/* roulang page: index */
:root{
  --bg-deep:#07061A;
  --bg-panel:#0E0C24;
  --brand-1:#6C4CF6;
  --brand-2:#2FD9C8;
  --accent:#FF6A3D;
  --text-1:#F0EEFF;
  --text-2:#A8A3CC;
  --text-3:#6F6A96;
  --line:rgba(150,132,255,.16);
  --line-strong:rgba(150,132,255,.42);
  --glass:rgba(126,106,255,.055);
  --glass-2:rgba(126,106,255,.10);
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --shadow-card:0 12px 32px rgba(4,2,24,.45);
  --shadow-hover:0 20px 44px rgba(108,76,246,.22);
  --shadow-bar:0 -8px 28px rgba(4,2,24,.5);
  --t:220ms cubic-bezier(.2,.7,.3,1);
  --sidebar-w:264px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-1);
  background:var(--bg-deep);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(680px 420px at 10% -8%,rgba(108,76,246,.22),transparent 66%),
    radial-gradient(560px 380px at 92% 4%,rgba(47,217,200,.12),transparent 68%),
    radial-gradient(760px 520px at 50% 110%,rgba(108,76,246,.14),transparent 70%);
}
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.16;
  background-image:radial-gradient(rgba(240,238,255,.55) 1px,transparent 1px);
  background-size:44px 44px;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-2);text-decoration:none;transition:color var(--t),opacity var(--t)}
a:hover{color:#7ff0e2}
h1,h2,h3,h4{margin:0;letter-spacing:0;color:var(--text-1)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;box-shadow:0 0 0 4px rgba(47,217,200,.18);border-radius:8px}
::selection{background:rgba(108,76,246,.5);color:#fff}

/* ---------- 侧栏 App Shell ---------- */
.app-sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);z-index:1040;
  display:flex;flex-direction:column;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-right:1px solid var(--line);
}
.app-sidebar::after{
  content:"";position:absolute;top:0;right:-1px;width:1px;height:100%;
  background:linear-gradient(180deg,transparent,rgba(108,76,246,.6),transparent);
}
.side-brand{display:flex;align-items:center;gap:12px;height:72px;padding:0 20px;border-bottom:1px solid var(--line);flex:0 0 auto}
.brand-mark{
  position:relative;flex:0 0 auto;width:36px;height:36px;border-radius:11px;
  background:linear-gradient(135deg,var(--brand-1),#38249f);
  box-shadow:0 8px 22px rgba(108,76,246,.45);
}
.brand-mark::after{
  content:"";position:absolute;inset:8px;border-radius:50%;
  border:1.5px solid var(--brand-2);border-right-color:transparent;border-bottom-color:transparent;
  transform:rotate(-30deg);
}
.brand-mark::before{
  content:"";position:absolute;left:50%;top:50%;width:5px;height:5px;margin:-2.5px 0 0 -2.5px;
  border-radius:50%;background:var(--brand-2);box-shadow:0 0 10px var(--brand-2);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-name{font-size:15px;font-weight:800;white-space:nowrap}
.brand-tag{font-size:11px;color:var(--text-3);white-space:nowrap}
.side-nav{flex:1 1 auto;overflow-y:auto;padding:16px 12px;display:flex;flex-direction:column;gap:6px}
.side-nav::-webkit-scrollbar{width:6px}
.side-nav::-webkit-scrollbar-thumb{background:rgba(150,132,255,.2);border-radius:6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;height:44px;padding:0 14px;
  border-radius:12px;color:var(--text-2);font-size:15px;white-space:nowrap;
  transition:background var(--t),color var(--t),transform var(--t);
}
.nav-item i{width:18px;text-align:center;font-size:15px;color:var(--text-3);transition:color var(--t)}
.nav-item:hover{background:var(--glass);color:var(--text-1)}
.nav-item:hover i{color:var(--brand-2)}
.nav-item.is-active{background:linear-gradient(90deg,rgba(108,76,246,.24),rgba(108,76,246,.04));color:var(--text-1);font-weight:600}
.nav-item.is-active i{color:var(--brand-2)}
.nav-item.is-active::before{
  content:"";position:absolute;left:-12px;top:11px;bottom:11px;width:3px;border-radius:3px;
  background:var(--brand-1);box-shadow:0 0 12px rgba(108,76,246,.95);
}
.side-foot{padding:16px 16px 18px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:12px;flex:0 0 auto}
.side-legal{font-size:12px;line-height:1.7;color:var(--text-3)}
.side-legal a{color:var(--text-3)}
.side-legal a:hover{color:var(--text-2)}

/* ---------- 移动顶部栏与抽屉 ---------- */
.mobile-topbar{
  display:none;position:sticky;top:0;z-index:1035;height:56px;align-items:center;gap:12px;
  padding:0 14px;background:rgba(14,12,36,.92);
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.topbar-toggle{
  width:40px;height:40px;border-radius:11px;border:1px solid var(--line);background:var(--glass);
  color:var(--text-1);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background var(--t),border-color var(--t);flex:0 0 auto;
}
.topbar-toggle:hover{background:var(--glass-2);border-color:var(--line-strong)}
.topbar-brand{display:flex;align-items:center;gap:10px;min-width:0}
.topbar-brand .brand-mark{width:30px;height:30px;border-radius:9px}
.topbar-name{font-size:15px;font-weight:800;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-cta{
  margin-left:auto;height:36px;padding:0 14px;border-radius:10px;font-size:13px;font-weight:600;
  display:inline-flex;align-items:center;background:linear-gradient(135deg,var(--brand-1),#5238d8);color:#fff;
}
.app-drawer{
  width:84vw!important;max-width:320px;background:#0B0920;color:var(--text-1);border-right:1px solid var(--line);
}
.app-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 18px}
.app-drawer .offcanvas-body{padding:16px 12px;display:flex;flex-direction:column;gap:16px}
.app-drawer .btn-close{filter:invert(1) grayscale(1) brightness(1.6);opacity:.7}
.drawer-legal{font-size:12px;color:var(--text-3);padding:0 14px 8px;line-height:1.7}

/* ---------- 主区域 ---------- */
.app-main{position:relative;z-index:1;margin-left:var(--sidebar-w);min-height:100vh}
.shell{max-width:1248px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-panel{background:linear-gradient(180deg,rgba(14,12,36,.5),rgba(14,12,36,0));border-top:1px solid rgba(150,132,255,.08)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.sec-title{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3}
.sec-desc{margin-top:10px;font-size:15px;color:var(--text-2);max-width:660px}
.sec-more{font-size:14px;display:inline-flex;align-items:center;gap:8px;color:var(--brand-2);border-bottom:1px solid rgba(47,217,200,.35);padding-bottom:2px}
.sec-more i{transition:transform var(--t)}
.sec-more:hover i{transform:translateX(4px)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:999px;
  font-size:12px;color:var(--brand-2);border:1px solid rgba(47,217,200,.34);background:rgba(47,217,200,.08);
}

/* ---------- 按钮 ---------- */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t);
  white-space:nowrap;text-align:center;
}
.btn-primary-x{background:linear-gradient(135deg,var(--brand-1),#5238d8);color:#fff;box-shadow:0 10px 30px rgba(108,76,246,.38)}
.btn-primary-x:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(108,76,246,.5);color:#fff}
.btn-primary-x:active{transform:translateY(-1px)}
.btn-ghost-x{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border-color:var(--line);color:var(--brand-2);
}
.btn-ghost-x:hover{border-color:rgba(47,217,200,.5);background:rgba(47,217,200,.08);color:#8ff3e6}
.btn-sm-x{height:38px;padding:0 16px;font-size:14px}
.btn-link-x{
  display:inline-flex;align-items:center;gap:8px;background:none;border:0;padding:0;cursor:pointer;
  color:var(--brand-2);font-size:14px;border-bottom:1px solid rgba(47,217,200,.35);transition:color var(--t),text-shadow var(--t);
}
.btn-link-x:hover{color:#8ff3e6;text-shadow:0 0 12px rgba(47,217,200,.6)}

/* ---------- Hero ---------- */
.hero{padding:56px 0 84px;position:relative;overflow:hidden}
.hero-row{min-height:480px}
.hero h1{font-size:clamp(30px,4.2vw,48px);line-height:1.2;font-weight:800;margin:18px 0 16px}
.hero-sub{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:26px;line-height:1.8}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:30px}
.hero-metrics{display:flex;flex-wrap:wrap}
.hero-metrics li{padding:0 24px;border-left:1px solid var(--line)}
.hero-metrics li:first-child{padding-left:0;border-left:0}
.hero-metrics b{display:block;font-size:20px;font-weight:700;font-variant-numeric:tabular-nums;line-height:1.5}
.hero-metrics span{font-size:13px;color:var(--text-3)}
.hero-visual{position:relative}
.hero-frame{
  position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-card);aspect-ratio:16/9;background-color:#141234;
  background-image:radial-gradient(rgba(240,238,255,.14) 1px,transparent 1px);background-size:22px 22px;
}
.hero-frame img{width:100%;height:100%;object-fit:cover}
.hero-frame::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,6,26,.12),rgba(7,6,26,.82))}
.glass-chip{
  position:absolute;z-index:2;padding:12px 15px;border-radius:14px;
  background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.025));
  border:1px solid var(--line);box-shadow:0 14px 30px rgba(4,2,24,.5);
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  font-size:13px;color:var(--text-2);
}
.chip-k{display:block;font-size:18px;font-weight:700;color:var(--brand-2);font-variant-numeric:tabular-nums;line-height:1.5}
.chip-a{left:-16px;bottom:36px;min-width:172px}
.chip-b{right:-12px;top:26px;min-width:150px}

/* ---------- 卖点三连 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.fcard{
  position:relative;padding:24px;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  backdrop-filter:blur(12px) saturate(140%);-webkit-backdrop-filter:blur(12px) saturate(140%);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.fcard:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.fcard.offset-1{margin-top:24px}
.fcard.offset-2{margin-top:48px}
.fnum{
  display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;letter-spacing:.08em;
  color:var(--brand-2);border:1px solid rgba(47,217,200,.42);
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;
}
.fcard h3{font-size:20px;font-weight:600;margin:16px 0 10px}
.fcard p{font-size:14.5px;color:var(--text-2);line-height:1.8}
.fico{
  width:44px;height:44px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(108,76,246,.18);border:1px solid rgba(108,76,246,.4);color:var(--brand-2);font-size:18px;margin-bottom:14px;
}
.fbig{font-size:40px;font-weight:800;line-height:1.1;font-variant-numeric:tabular-nums;background:linear-gradient(120deg,#fff,var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.flist{margin-top:12px;display:flex;flex-direction:column;gap:8px}
.flist li{position:relative;padding-left:18px;font-size:14.5px;color:var(--text-2)}
.flist li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--brand-2);box-shadow:0 0 8px rgba(47,217,200,.8)}

/* ---------- 分类入口 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cat-card{
  display:flex;flex-direction:column;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  box-shadow:var(--shadow-card);transition:transform var(--t),box-shadow var(--t),border-color var(--t);height:100%;
}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.cat-cover{
  aspect-ratio:16/10;overflow:hidden;background-color:#141234;
  background-image:radial-gradient(rgba(240,238,255,.14) 1px,transparent 1px);background-size:20px 20px;
}
.cat-cover img{width:100%;height:100%;object-fit:cover;transition:transform 420ms cubic-bezier(.2,.7,.3,1)}
.cat-card:hover .cat-cover img{transform:scale(1.05)}
.cat-body{padding:18px;display:flex;flex-direction:column;gap:8px;flex:1 1 auto}
.cat-body h3{font-size:17px;font-weight:700}
.cat-body p{font-size:13.5px;color:var(--text-2);line-height:1.75}
.cat-go{margin-top:auto;font-size:13px;color:var(--brand-2);display:inline-flex;align-items:center;gap:6px}
.cat-card:hover .cat-go i{transform:translateX(4px)}
.cat-go i{transition:transform var(--t)}

/* ---------- 场景演示 ---------- */
.scene-grid{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:center}
.steps{position:relative;padding:8px 0}
.steps::before{
  content:"";position:absolute;left:19px;top:22px;bottom:22px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,rgba(108,76,246,.75),rgba(47,217,200,.2));
}
.step{position:relative;display:flex;gap:16px;padding-bottom:26px}
.step:last-child{padding-bottom:0}
.step-node{
  position:relative;z-index:1;flex:0 0 auto;width:40px;height:40px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;
  font-variant-numeric:tabular-nums;color:var(--text-2);border:1px solid var(--line);
  background:rgba(14,12,36,.95);
}
.step.on .step-node{background:var(--brand-1);color:#fff;border-color:rgba(108,76,246,.9);box-shadow:0 0 22px rgba(108,76,246,.75)}
.step h3{font-size:17px;font-weight:600;margin-bottom:6px}
.step p{font-size:14px;color:var(--text-2);line-height:1.8}
.mock{
  border-radius:16px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
}
.mock-bar{height:38px;display:flex;align-items:center;gap:6px;padding:0 14px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.03)}
.dot{width:9px;height:9px;border-radius:50%;background:rgba(240,238,255,.18)}
.dot.a{background:rgba(255,106,61,.7)}
.dot.b{background:rgba(255,214,102,.7)}
.dot.c{background:rgba(47,217,200,.7)}
.mock-title{margin-left:10px;font-size:12px;color:var(--text-3)}
.mock-body{padding:18px;display:grid;gap:14px}
.mock-cover{
  aspect-ratio:16/9;border-radius:12px;overflow:hidden;background-color:#141234;
  background-image:radial-gradient(rgba(240,238,255,.14) 1px,transparent 1px);background-size:20px 20px;
}
.mock-cover img{width:100%;height:100%;object-fit:cover}
.mock-row{display:flex;gap:12px;align-items:center}
.bar{height:12px;border-radius:6px;background:rgba(150,132,255,.18)}
.bar.w30{width:30%}
.bar.w45{width:45%}
.bar.w60{width:60%}
.bar.w75{width:75%}
.bar.br{background:rgba(47,217,200,.28)}
.chip-mini{
  height:24px;padding:0 10px;border-radius:999px;font-size:12px;color:var(--brand-2);
  border:1px solid rgba(47,217,200,.4);background:rgba(47,217,200,.08);display:inline-flex;align-items:center;
}

/* ---------- 社会认同 ---------- */
.stat-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;padding:28px 8px;margin-bottom:36px;
  border-radius:var(--r-card);border:1px solid var(--line);background:var(--glass);
}
.stat{padding:0 22px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0;padding-left:8px}
.stat b{
  display:block;font-size:clamp(28px,3.2vw,38px);font-weight:800;line-height:1.25;font-variant-numeric:tabular-nums;
  background:linear-gradient(120deg,#fff,var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat span{font-size:13px;color:var(--text-3)}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:start}
.quote{
  position:relative;padding:24px;border-radius:var(--r-card);border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  box-shadow:var(--shadow-card);
}
.quote::before{
  content:"\201C";position:absolute;top:2px;right:18px;font-size:58px;line-height:1;color:rgba(108,76,246,.35);
  font-family:Georgia,"Times New Roman",serif;
}
.quote p{font-size:15px;color:var(--text-2);line-height:1.85}
.who{display:flex;align-items:center;gap:10px;margin-top:18px}
.avatar-ph{
  width:36px;height:36px;border-radius:50%;flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;color:#fff;background:linear-gradient(135deg,var(--brand-1),var(--brand-2));
}
.who-name{font-size:14px;font-weight:600;color:var(--text-1);line-height:1.4}
.who-role{font-size:12px;color:var(--text-3);line-height:1.4}
.partner-row{display:flex;gap:10px;overflow-x:auto;padding:6px 2px 10px;margin-top:28px}
.partner-row::-webkit-scrollbar{height:6px}
.partner-row::-webkit-scrollbar-thumb{background:rgba(150,132,255,.22);border-radius:6px}
.pill{
  flex:0 0 auto;height:34px;padding:0 16px;border-radius:999px;border:1px solid var(--line);background:var(--glass);
  color:var(--text-2);font-size:13px;display:inline-flex;align-items:center;gap:8px;
}
.pill i{color:var(--brand-2);font-size:12px}

/* ---------- 最新信息 ---------- */
.latest-list .card-x{height:100%}
.card-x{
  display:flex;flex-direction:column;border-radius:var(--r-card);overflow:hidden;color:inherit;
  border:1px solid var(--line);background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  box-shadow:var(--shadow-card);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card-x:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong);color:inherit}
.card-cover{
  aspect-ratio:16/10;overflow:hidden;background-color:#141234;
  background-image:radial-gradient(rgba(240,238,255,.14) 1px,transparent 1px);background-size:20px 20px;
}
.card-cover.ratio-lg{aspect-ratio:16/9}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform 420ms cubic-bezier(.2,.7,.3,1)}
.card-x:hover .card-cover img{transform:scale(1.04)}
.card-body-x{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.badge-x{
  align-self:flex-start;display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;color:var(--brand-2);border:1px solid rgba(47,217,200,.4);background:rgba(47,217,200,.08);
}
.card-title-x{
  font-size:17px;font-weight:700;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-title-x.lg{font-size:20px}
.card-excerpt{
  font-size:14px;color:var(--text-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3)}
.card-date{display:inline-flex;align-items:center;gap:6px;font-variant-numeric:tabular-nums}
.card-date i{color:var(--text-3);font-size:12px}
.readmore{display:inline-flex;align-items:center;gap:6px;color:var(--brand-2);font-size:13px}
.readmore i{transition:transform var(--t)}
.card-x:hover .readmore i{transform:translateX(4px)}
.empty-state{
  min-height:260px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  text-align:center;padding:32px;border-radius:var(--r-card);border:1px dashed var(--line);background:var(--glass);
  color:var(--text-2);font-size:15px;
}
.empty-state .star{font-size:48px;color:var(--brand-1);filter:drop-shadow(0 0 14px rgba(108,76,246,.6))}
.pager-slot{display:flex;justify-content:center;gap:8px;margin-top:36px}
.pager-slot span{
  width:36px;height:36px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--text-3);font-size:13px;font-variant-numeric:tabular-nums;
}
.pager-slot span.on{background:rgba(108,76,246,.22);border-color:rgba(108,76,246,.55);color:var(--text-1)}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  border-radius:16px;border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  backdrop-filter:blur(12px) saturate(140%);-webkit-backdrop-filter:blur(12px) saturate(140%);
  transition:border-color var(--t),box-shadow var(--t);
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;
  background:transparent;border:0;color:var(--text-1);font-size:16.5px;font-weight:600;text-align:left;cursor:pointer;
}
.faq-ico{position:relative;width:24px;height:24px;flex:0 0 auto}
.faq-ico::before,.faq-ico::after{content:"";position:absolute;background:var(--brand-2);border-radius:2px;transition:transform var(--t),opacity var(--t)}
.faq-ico::before{left:2px;right:2px;top:11px;height:2px}
.faq-ico::after{top:2px;bottom:2px;left:11px;width:2px}
.faq-btn[aria-expanded="true"] .faq-ico::after{transform:rotate(90deg);opacity:0}
.faq-body{padding:0 20px 20px;font-size:15px;color:var(--text-2);line-height:1.85}

/* ---------- 收口 CTA ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:36px;border-radius:20px;border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(108,76,246,.2),rgba(47,217,200,.08));
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.35}
.cta-band p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:24px;border-top:1px solid var(--line);background:rgba(14,12,36,.62);
  padding:64px 0 104px;
}
.foot-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr 1fr;gap:32px}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.foot-about{font-size:14px;color:var(--text-2);line-height:1.85;max-width:340px}
.foot-title{font-size:14px;font-weight:700;color:var(--text-1);margin-bottom:14px}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{font-size:14px;color:var(--text-2);position:relative;width:fit-content}
.foot-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--brand-2);
  transform:scaleX(0);transform-origin:left;transition:transform var(--t);opacity:.8;
}
.foot-links a:hover{color:var(--text-1)}
.foot-links a:hover::after{transform:scaleX(1)}
.foot-contact{font-size:14px;color:var(--text-2);line-height:1.9}
.foot-pills{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.foot-bar{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.foot-bar-copy{display:flex;gap:16px;flex-wrap:wrap}
.to-top{
  position:fixed;right:22px;bottom:78px;z-index:1055;width:44px;height:44px;border-radius:12px;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:rgba(14,12,36,.9);color:var(--brand-2);
  backdrop-filter:blur(12px);opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity var(--t),transform var(--t),border-color var(--t);
}
.to-top.show{opacity:1;transform:translateY(0);pointer-events:auto}
.to-top:hover{border-color:var(--line-strong)}

/* ---------- 底部固定转化条 ---------- */
.fixed-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1060;height:56px;
  display:flex;align-items:center;gap:16px;padding:0 24px;
  background:linear-gradient(180deg,rgba(14,12,36,.94),rgba(7,6,26,.97));
  backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);
  border-top:1px solid rgba(150,132,255,.42);box-shadow:var(--shadow-bar);
  transform:translateY(120%);opacity:0;pointer-events:none;
  transition:transform 260ms cubic-bezier(.2,.7,.3,1),opacity 260ms;
}
.fixed-bar.is-visible{transform:translateY(0);opacity:1;pointer-events:auto}
.fixed-bar-text{font-size:14px;color:var(--text-2)}
.fixed-bar-text b{color:var(--text-1);font-weight:600}
.fixed-bar-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.fixed-bar-close{
  width: 34px;height:34px;border-radius:10px;border:1px solid var(--line);background:var(--glass);
  color:var(--text-2);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
  transition:background var(--t),color var(--t);
}
.fixed-bar-close:hover{background:var(--glass-2);color:var(--text-1)}

/* ---------- 响应式 ---------- */
@media (max-width:1399.98px){
  :root{--sidebar-w:232px}
}
@media (max-width:1199.98px){
  :root{--sidebar-w:76px}
  .brand-text,.nav-label,.side-legal,.btn-side-text{display:none}
  .side-brand{justify-content:center;padding:0}
  .nav-item{justify-content:center;padding:0}
  .nav-item.is-active::before{left:-8px}
  .side-foot{padding:16px 10px 18px}
  .btn-side{padding:0;width:100%}
  .foot-grid{grid-template-columns:repeat(3,1fr)}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:991.98px){
  .app-sidebar{display:none}
  .app-main{margin-left:0}
  .mobile-topbar{display:flex}
  .section{padding:72px 0}
  .hero{padding:36px 0 64px}
  .hero-row{min-height:0}
  .stat-band{grid-template-columns:repeat(2,1fr);gap:20px 0;padding:24px 8px}
  .stat:nth-child(3){border-left:0;padding-left:8px}
  .quote-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
  .fcard.offset-1,.fcard.offset-2{margin-top:0}
  .chip-a{left:8px;bottom:-14px}
  .chip-b{right:8px;top:-14px}
}
@media (max-width:767.98px){
  .shell{padding:0 16px}
  .section{padding:56px 0}
  .hero h1{font-size:clamp(26px,7vw,34px)}
  .hero-sub{font-size:15.5px}
  .hero-metrics li{padding:0 14px}
  .hero-metrics b{font-size:18px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-about{max-width:none}
  .cta-band{padding:24px}
  .fixed-bar{height:64px;padding:0 14px;gap:12px}
  .fixed-bar-text{display:none}
  .btn-bar-ghost{display:none}
  .fixed-bar-actions{margin-left:0;width:100%}
  .btn-bar-main{flex:1 1 auto}
  .steps{display:flex;gap:14px;overflow-x:auto;padding:6px 2px 12px;scroll-snap-type:x mandatory}
  .steps::before{display:none}
  .step{flex:0 0 78%;scroll-snap-align:start;padding-bottom:0;flex-direction:column;gap:10px}
  .mock-body{padding:14px}
  .to-top{bottom:84px;right:14px}
}
@media (max-width:575.98px){
  .cat-grid{grid-template-columns:1fr}
  .stat-band{grid-template-columns:1fr;gap:18px}
  .stat,.stat:nth-child(3){border-left:0;padding-left:8px}
  .hero-actions .btn-x{width:100%}
  .cta-actions .btn-x{width:100%}
  .quote::before{font-size:48px}
  .faq-btn{font-size:15.5px;padding:16px}
  .faq-body{padding:0 16px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --bg-deep:#07061A;
  --bg-panel:#0E0C24;
  --brand-1:#6C4CF6;
  --brand-2:#2FD9C8;
  --accent:#FF6A3D;
  --text-1:#F0EEFF;
  --text-2:#A8A3CC;
  --text-3:#6F6A96;
  --line:rgba(150,132,255,.16);
  --line-strong:rgba(150,132,255,.32);
  --glass:rgba(126,106,255,.055);
  --glass-2:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --radius-pill:999px;
  --shadow-1:0 12px 32px rgba(4,2,24,.45);
  --shadow-2:0 20px 44px rgba(108,76,246,.22);
  --shadow-bar:0 -8px 28px rgba(4,2,24,.5);
  --sidebar-w:264px;
  --space-section:96px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
@media (max-width:1399px){:root{--sidebar-w:232px;}}
@media (max-width:1199px){:root{--sidebar-w:76px;--space-section:80px;}}
@media (max-width:991px){:root{--sidebar-w:0px;--space-section:72px;}}
@media (max-width:767px){:root{--space-section:56px;}}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--bg-deep);
  background-image:
    radial-gradient(1100px 620px at 10% -12%,rgba(108,76,246,.22),transparent 62%),
    radial-gradient(880px 520px at 92% 4%,rgba(47,217,200,.10),transparent 64%),
    radial-gradient(760px 760px at 68% 96%,rgba(108,76,246,.13),transparent 66%);
  background-attachment:fixed;
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:repeating-linear-gradient(0deg,rgba(255,255,255,.022) 0 1px,transparent 1px 4px);
  opacity:.5;
}
img{max-width:100%;display:block;}
a{color:var(--brand-2);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:#fff;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text-1);letter-spacing:0;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

.skip-link{position:absolute;left:-999px;top:8px;z-index:2000;background:var(--brand-1);color:#fff;padding:10px 16px;border-radius:var(--radius-btn);}
.skip-link:focus{left:16px;}

/* ============ 侧栏导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);z-index:900;
  display:flex;flex-direction:column;
  background:linear-gradient(180deg,rgba(14,12,36,.94),rgba(9,8,26,.92));
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-right:1px solid var(--line);
  transition:transform .26s var(--ease),width .26s var(--ease);
}
.sidebar::after{
  content:"";position:absolute;top:0;right:-1px;width:1px;height:100%;
  background:linear-gradient(180deg,transparent,rgba(108,76,246,.7),rgba(47,217,200,.35),transparent);
  opacity:.7;
}
.brand{
  height:72px;display:flex;align-items:center;gap:12px;padding:0 20px;
  border-bottom:1px solid var(--line);flex:0 0 auto;
}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:11px;
  background:
    radial-gradient(circle at 32% 28%,rgba(47,217,200,.95),transparent 55%),
    linear-gradient(150deg,var(--brand-1),#3A28A8);
  box-shadow:0 0 0 1px rgba(255,255,255,.14) inset,0 8px 22px rgba(108,76,246,.45);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:9px;border-radius:50%;
  border:1px dashed rgba(255,255,255,.55);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;overflow:hidden;}
.brand-name{font-size:16px;font-weight:800;color:#fff;letter-spacing:.02em;}
.brand-tag{font-size:11px;color:var(--brand-2);letter-spacing:.14em;}

.side-nav{padding:18px 12px;display:flex;flex-direction:column;gap:6px;flex:1 1 auto;overflow-y:auto;}
.nav-item{
  display:flex;align-items:center;gap:12px;height:44px;padding:0 14px;border-radius:var(--radius-btn);
  color:var(--text-2);font-size:14.5px;position:relative;white-space:nowrap;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.nav-item i{width:18px;text-align:center;font-size:15px;color:var(--text-3);transition:color .22s var(--ease);}
.nav-item:hover{background:var(--glass);color:var(--text-1);}
.nav-item:hover i{color:var(--brand-2);}
.nav-item.is-active{
  background:linear-gradient(90deg,rgba(108,76,246,.24),rgba(108,76,246,.04));
  color:#fff;
}
.nav-item.is-active i{color:var(--brand-2);}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand-2),var(--brand-1));
  box-shadow:0 0 12px rgba(47,217,200,.85);
}
.side-cta-wrap{padding:14px 12px 6px;flex:0 0 auto;}
.side-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;width:100%;height:44px;
  border-radius:var(--radius-btn);border:none;
  background:linear-gradient(135deg,var(--brand-1),#4B32C9);
  color:#fff;font-size:14.5px;font-weight:700;white-space:nowrap;
  box-shadow:0 10px 30px rgba(108,76,246,.38),0 1px 0 rgba(255,255,255,.22) inset;
  transition:transform .22s var(--ease),filter .22s var(--ease),box-shadow .22s var(--ease);
}
.side-cta:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 16px 36px rgba(108,76,246,.5),0 1px 0 rgba(255,255,255,.3) inset;color:#fff;}
.side-cta:active{transform:translateY(-1px);}
.side-foot{padding:8px 18px 18px;font-size:11.5px;color:var(--text-3);line-height:1.7;flex:0 0 auto;}

@media (max-width:1199px) and (min-width:992px){
  .brand{justify-content:center;padding:0 10px;}
  .brand-text{display:none;}
  .nav-item{justify-content:center;padding:0;}
  .nav-item .nav-label{
    position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%) scale(.96);
    background:rgba(20,16,50,.96);border:1px solid var(--line);border-radius:10px;
    padding:6px 12px;font-size:13px;color:var(--text-1);white-space:nowrap;
    opacity:0;pointer-events:none;transition:opacity .18s var(--ease),transform .18s var(--ease);
    box-shadow:var(--shadow-1);z-index:5;
  }
  .nav-item:hover .nav-label{opacity:1;transform:translateY(-50%) scale(1);}
  .side-cta{font-size:0;gap:0;}
  .side-cta i{font-size:15px;}
  .side-foot{font-size:0;padding:8px 6px 16px;text-align:center;}
  .side-foot i{font-size:13px;}
}

/* 移动端顶栏 + 抽屉 */
.mobile-topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:950;
  align-items:center;justify-content:space-between;padding:0 14px;
  background:rgba(10,9,30,.92);backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.mobile-topbar .brand{padding:0;height:auto;border:none;gap:10px;}
.mobile-topbar .brand-mark{width:30px;height:30px;flex:0 0 30px;border-radius:10px;}
.drawer-toggle{
  width:40px;height:40px;border-radius:11px;border:1px solid var(--line);
  background:var(--glass);color:var(--text-1);font-size:16px;
}
.drawer-toggle:hover{border-color:var(--line-strong);color:#fff;}
.backdrop{
  display:none;position:fixed;inset:0;background:rgba(4,2,18,.66);z-index:890;
}
@media (max-width:991px){
  .mobile-topbar{display:flex;}
  .sidebar{
    width:84vw;max-width:320px;transform:translateX(-101%);
    box-shadow:0 24px 60px rgba(4,2,24,.7);
  }
  .sidebar.is-open{transform:translateX(0);}
  .brand-text{display:flex;}
  .brand{padding-top:6px;}
  .nav-item{justify-content:flex-start;padding:0 14px;}
  .nav-item .nav-label{position:static;opacity:1;transform:none;background:none;border:none;padding:0;box-shadow:none;font-size:14.5px;}
  body.drawer-open .backdrop{display:block;}
}

/* ============ 页面容器 ============ */
.page-wrap{margin-left:var(--sidebar-w);position:relative;z-index:1;}
@media (max-width:991px){.page-wrap{margin-left:0;padding-top:56px;}}
.shell{max-width:1200px;margin:0 auto;padding:0 24px;}
@media (max-width:767px){.shell{padding:0 16px;}}

.section{padding:var(--space-section) 0;}
@media (max-width:991px){.section{padding:72px 0;}}
@media (max-width:767px){.section{padding:56px 0;}}

/* ============ 通用组件 ============ */
.breadcrumb-bar{padding:22px 0 0;font-size:13px;color:var(--text-3);}
.breadcrumb-bar ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.breadcrumb-bar li{display:flex;align-items:center;gap:8px;}
.breadcrumb-bar li+li::before{content:"/";color:var(--text-3);}
.breadcrumb-bar a{color:var(--text-2);}
.breadcrumb-bar a:hover{color:#fff;}
.breadcrumb-bar .current{color:var(--brand-2);}

.btn-main{
  display:inline-flex;align-items:center;gap:9px;height:48px;padding:0 24px;
  border:none;border-radius:var(--radius-btn);cursor:pointer;
  background:linear-gradient(135deg,var(--brand-1),#4B32C9);
  color:#fff;font-size:15px;font-weight:700;
  box-shadow:0 10px 30px rgba(108,76,246,.38),0 1px 0 rgba(255,255,255,.22) inset;
  transition:transform .22s var(--ease),filter .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-main:hover{transform:translateY(-2px);filter:brightness(1.08);color:#fff;box-shadow:0 16px 38px rgba(108,76,246,.5),0 1px 0 rgba(255,255,255,.32) inset;}
.btn-main:active{transform:translateY(1px);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:9px;height:48px;padding:0 22px;
  border-radius:var(--radius-btn);cursor:pointer;
  background:var(--glass);border:1px solid var(--line-strong);
  color:var(--brand-2);font-size:15px;font-weight:600;
  transition:transform .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn-ghost:hover{transform:translateY(-2px);background:rgba(47,217,200,.09);border-color:rgba(47,217,200,.5);color:#fff;}
.btn-ghost:active{transform:translateY(1px);}
.btn-link-x{
  background:none;border:none;padding:0;color:var(--text-2);font-size:13.5px;cursor:pointer;
  display:inline-flex;align-items:center;gap:6px;
  border-bottom:1px solid transparent;transition:color .22s var(--ease),border-color .22s var(--ease),text-shadow .22s var(--ease);
}
.btn-link-x:hover{color:var(--brand-2);border-color:rgba(47,217,200,.6);text-shadow:0 0 12px rgba(47,217,200,.55);}

.badge-tag{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:var(--radius-pill);font-size:12px;
  color:var(--brand-2);background:rgba(47,217,200,.08);
  border:1px solid rgba(47,217,200,.35);letter-spacing:.02em;
}
.pill{
  display:inline-flex;align-items:center;gap:7px;height:30px;padding:0 14px;border-radius:var(--radius-pill);
  font-size:12.5px;color:var(--text-2);background:var(--glass);border:1px solid var(--line);
}
.pill i{color:var(--brand-2);font-size:11.5px;}

.section-head{margin-bottom:32px;max-width:760px;}
.section-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;color:var(--brand-2);
  letter-spacing:.16em;margin-bottom:10px;
}
.section-head .eyebrow::before{content:"";width:22px;height:1px;background:var(--brand-2);display:block;opacity:.7;}
.section-head p{margin-top:12px;color:var(--text-2);font-size:15.5px;max-width:720px;}

.media{
  position:relative;overflow:hidden;border-radius:var(--radius-img);border:1px solid var(--line);
  background:
    radial-gradient(circle at 28% 26%,rgba(108,76,246,.42),transparent 58%),
    radial-gradient(circle at 74% 74%,rgba(47,217,200,.24),transparent 58%),
    #0B0920;
}
.media img{width:100%;height:100%;object-fit:cover;display:block;}
.media--16-10{aspect-ratio:16/10;}
.media--16-9{aspect-ratio:16/9;}
.media--4-3{aspect-ratio:4/3;}

/* ============ Hero ============ */
.hero{position:relative;padding:44px 0 8px;}
.hero-card{
  position:relative;border-radius:24px;overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  box-shadow:var(--shadow-1);
}
.hero-bg{position:absolute;inset:0;z-index:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.42;}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,6,26,.94) 0%,rgba(7,6,26,.82) 42%,rgba(7,6,26,.5) 100%);
}
.hero-inner{position:relative;z-index:1;padding:56px 48px 52px;}
.hero-title{
  font-size:clamp(30px,4.2vw,48px);font-weight:800;line-height:1.2;letter-spacing:0;
}
.hero-title .hero-title-sub{
  display:block;margin-top:12px;font-size:clamp(18px,2vw,22px);font-weight:600;color:var(--brand-2);
}
.hero-lead{margin-top:18px;max-width:620px;color:var(--text-2);font-size:16px;line-height:1.9;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
.hero-note{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13px;color:var(--text-3);}
.hero-note span{display:inline-flex;align-items:center;gap:7px;}
.hero-note i{color:var(--brand-2);font-size:12px;}

/* ============ 页内锚点导航 ============ */
.anchor-bar{
  position:sticky;top:0;z-index:60;margin-top:34px;
  border-radius:var(--radius-card);border:1px solid var(--line);
  background:rgba(12,10,32,.82);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  padding:12px 16px;display:flex;flex-wrap:wrap;gap:8px;align-items:center;
  box-shadow:var(--shadow-1);
}
.anchor-bar .anchor-label{font-size:12.5px;color:var(--text-3);margin-right:6px;}
.anchor-bar a{
  display:inline-flex;align-items:center;gap:7px;height:32px;padding:0 14px;border-radius:var(--radius-pill);
  font-size:13px;color:var(--text-2);border:1px solid transparent;background:var(--glass);
  transition:color .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.anchor-bar a:hover{color:#fff;border-color:var(--line-strong);background:rgba(108,76,246,.14);}
@media (max-width:991px){.anchor-bar{display:none;}}

/* ============ 图文交替分区 ============ */
.split{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:38px 0;
}
.split+.split{border-top:1px solid rgba(150,132,255,.09);}
.split-media{position:relative;}
.split-media .media{box-shadow:var(--shadow-1);}
.split-media .media-float{
  position:absolute;left:-16px;bottom:-20px;
  padding:14px 18px;border-radius:var(--radius-card);
  background:rgba(14,12,36,.9);border:1px solid var(--line-strong);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-1);min-width:180px;
}
.split-media .media-float .k{font-size:20px;font-weight:800;color:var(--accent);}
.split-media .media-float .v{font-size:12.5px;color:var(--text-2);}
.split-body .index{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;color:var(--brand-2);
  border:1px solid rgba(47,217,200,.35);background:rgba(47,217,200,.07);
  border-radius:var(--radius-pill);padding:3px 12px;letter-spacing:.1em;
}
.split-body h3{margin-top:16px;font-size:clamp(20px,2.2vw,26px);font-weight:700;line-height:1.4;}
.split-body .desc{margin-top:14px;color:var(--text-2);font-size:15.5px;}
.points{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
.points li{position:relative;padding-left:24px;color:var(--text-2);font-size:15px;line-height:1.75;}
.points li::before{
  content:"";position:absolute;left:4px;top:.72em;width:6px;height:6px;border-radius:50%;
  background:var(--brand-2);box-shadow:0 0 10px rgba(47,217,200,.85);
}
.points li strong{color:var(--text-1);font-weight:600;}
.split--reverse .split-media{order:2;}
@media (max-width:991px){
  .split{grid-template-columns:1fr;gap:28px;padding:28px 0;}
  .split--reverse .split-media{order:0;}
  .split-media .media-float{position:static;margin-top:14px;display:inline-block;}
}

/* ============ 数据带 ============ */
.stat-band{
  border-radius:24px;border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.015));
  backdrop-filter:blur(12px) saturate(140%);
  padding:40px 32px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  box-shadow:var(--shadow-1);
}
.stat-item{text-align:left;position:relative;padding-left:20px;}
.stat-item::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand-2),rgba(108,76,246,.2));
}
.stat-item .stat-num{font-size:clamp(28px,3.2vw,38px);font-weight:800;color:#fff;line-height:1.15;}
.stat-item .stat-num em{font-style:normal;font-size:16px;color:var(--brand-2);margin-left:4px;font-weight:600;}
.stat-item .stat-label{margin-top:6px;font-size:13.5px;color:var(--text-2);}
@media (max-width:767px){
  .stat-band{grid-template-columns:repeat(2,1fr);padding:28px 20px;gap:20px;}
}

/* ============ FAQ ============ */
.faq-list .accordion-item{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-list .accordion-item:hover{border-color:var(--line-strong);box-shadow:var(--shadow-2);}
.faq-list .accordion-button{
  background:transparent;color:var(--text-1);
  font-size:16px;font-weight:600;line-height:1.6;
  padding:20px 22px;border:none;box-shadow:none;border-radius:var(--radius-card);
  display:flex;align-items:center;gap:16px;
  transition:color .22s var(--ease);
}
.faq-list .accordion-button:not(.collapsed){color:#fff;background:transparent;box-shadow:none;}
.faq-list .accordion-button:focus{box-shadow:0 0 0 2px rgba(47,217,200,.55);}
.faq-list .accordion-button::after{
  content:"+";background-image:none;
  width:26px;height:26px;flex:0 0 26px;margin-left:auto;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;line-height:1;color:var(--brand-2);
  border:1px solid rgba(47,217,200,.4);border-radius:50%;
  transition:transform .22s var(--ease),background .22s var(--ease);
}
.faq-list .accordion-button:not(.collapsed)::after{transform:rotate(45deg);background:rgba(47,217,200,.12);}
.faq-list .accordion-body{
  padding:0 22px 22px;color:var(--text-2);font-size:15px;line-height:1.85;max-width:860px;
}

/* ============ CTA 横幅 ============ */
.cta-banner{
  border-radius:24px;border:1px solid var(--line-strong);
  background:
    radial-gradient(600px 260px at 12% 0%,rgba(108,76,246,.38),transparent 68%),
    linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  padding:46px 42px;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
  box-shadow:var(--shadow-1);
}
.cta-banner h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.35;}
.cta-banner p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:620px;}
.cta-banner .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
@media (max-width:767px){.cta-banner{padding:30px 22px;}}

/* ============ 相关分类卡 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.rel-card{
  display:flex;flex-direction:column;height:100%;
  border-radius:var(--radius-card);border:1px solid var(--line);overflow:hidden;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-2);}
.rel-card .media{border-radius:0;border:none;border-bottom:1px solid var(--line);}
.rel-card .rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.rel-card h3{font-size:18px;font-weight:700;color:var(--text-1);}
.rel-card p{font-size:14px;color:var(--text-2);}
.rel-card .rel-more{margin-top:auto;font-size:13.5px;color:var(--brand-2);display:inline-flex;align-items:center;gap:7px;}
.rel-card:hover .rel-more i{transform:translateX(4px);}
.rel-more i{transition:transform .22s var(--ease);}
@media (max-width:991px){.rel-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:767px){.rel-grid{grid-template-columns:1fr;}}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(14,12,36,.7),rgba(7,6,26,.95));
  padding:64px 0 96px;margin-top:20px;
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.2fr;gap:36px;}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.foot-about{font-size:13.5px;color:var(--text-2);line-height:1.9;max-width:340px;}
.foot-pills{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.foot-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;}
.foot-links{display:flex;flex-direction:column;gap:10px;}
.foot-links a{font-size:13.5px;color:var(--text-2);position:relative;display:inline-block;width:fit-content;}
.foot-links a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;background:var(--brand-2);
  transition:width .24s var(--ease);
}
.foot-links a:hover{color:#fff;}
.foot-links a:hover::after{width:100%;}
.foot-contact{font-size:13.5px;color:var(--text-2);line-height:2;}
.foot-bar{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
}
.foot-bar-copy{display:flex;flex-wrap:wrap;gap:18px;font-size:12.5px;color:var(--text-3);}
@media (max-width:1199px){.foot-grid{grid-template-columns:1fr 1fr 1fr;}}
@media (max-width:767px){.foot-grid{grid-template-columns:1fr;gap:28px;}.site-footer{padding:48px 0 104px;}}

/* ============ 底部固定转化条 ============ */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:960;
  height:56px;padding:0 20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:rgba(12,10,32,.86);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-top:1px solid transparent;
  border-image:linear-gradient(90deg,transparent,rgba(108,76,246,.75),rgba(47,217,200,.6),transparent) 1;
  box-shadow:var(--shadow-bar);
  transform:translateY(110%);opacity:0;
  transition:transform .3s var(--ease),opacity .3s var(--ease);
}
.sticky-bar.is-show{transform:translateY(0);opacity:1;}
.sticky-bar.is-gone{display:none;}
.sticky-bar .bar-text{font-size:14px;color:var(--text-2);display:flex;align-items:center;gap:9px;}
.sticky-bar .bar-text i{color:var(--accent);}
.sticky-bar .bar-actions{display:flex;align-items:center;gap:10px;}
.sticky-bar .btn-main,.sticky-bar .btn-ghost{height:38px;font-size:14px;padding:0 18px;}
.bar-close{
  width:34px;height:34px;border-radius:10px;border:1px solid var(--line);
  background:var(--glass);color:var(--text-2);font-size:13px;
  transition:color .22s var(--ease),border-color .22s var(--ease);
}
.bar-close:hover{color:#fff;border-color:var(--line-strong);}
@media (max-width:767px){
  .sticky-bar{height:64px;padding:0 14px;}
  .sticky-bar .bar-text{display:none;}
  .sticky-bar .bar-actions{width:100%;}
  .sticky-bar .btn-main{flex:1 1 auto;justify-content:center;}
  .sticky-bar .btn-ghost{display:none;}
}

@media (prefers-reduced-motion:reduce){
  *{transition-duration:.001ms !important;animation-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --bg-deep:#07061A;
  --bg-panel:#0E0C24;
  --brand-1:#6C4CF6;
  --brand-2:#2FD9C8;
  --accent:#FF6A3D;
  --text-1:#F0EEFF;
  --text-2:#A8A3CC;
  --text-3:#6F6A96;
  --line:rgba(150,132,255,.16);
  --glass:rgba(126,106,255,.055);
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --r-pill:999px;
  --sh-card:0 12px 32px rgba(4,2,24,.45);
  --sh-hover:0 20px 44px rgba(108,76,246,.22);
  --sh-bar:0 -8px 28px rgba(4,2,24,.5);
  --shell-w:264px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  background-color:var(--bg-deep);
  background-image:
    radial-gradient(1100px 620px at 80% -10%,rgba(108,76,246,.22),transparent 62%),
    radial-gradient(760px 520px at 2% 18%,rgba(47,217,200,.10),transparent 60%),
    radial-gradient(1.4px 1.4px at 14% 32%,rgba(255,255,255,.42),transparent 100%),
    radial-gradient(1.4px 1.4px at 68% 12%,rgba(255,255,255,.32),transparent 100%),
    radial-gradient(1.2px 1.2px at 46% 62%,rgba(255,255,255,.24),transparent 100%),
    radial-gradient(1.2px 1.2px at 88% 46%,rgba(255,255,255,.20),transparent 100%);
  background-attachment:fixed;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:8px}
.tnum{font-variant-numeric:tabular-nums}

/* ---------- App Shell ---------- */
.app-shell{
  position:fixed;left:0;top:0;bottom:0;width:var(--shell-w);z-index:1045;
  display:flex;flex-direction:column;
  padding:0 16px 20px;
  background:linear-gradient(180deg,rgba(18,15,46,.94),rgba(7,6,26,.96));
  border-right:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.brand{display:flex;align-items:center;gap:12px;height:72px;flex:0 0 72px}
.brand-mark{
  position:relative;flex:0 0 30px;width:30px;height:30px;border-radius:10px;
  background:conic-gradient(from 210deg,var(--brand-2),var(--brand-1) 55%,var(--accent));
  box-shadow:0 0 18px rgba(108,76,246,.55);
}
.brand-mark::after{content:"";position:absolute;inset:8px;border-radius:6px;background:var(--bg-deep)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:16px;font-weight:800;color:var(--text-1)}
.brand-tag{font-size:11px;color:var(--brand-2)}
.side-nav{display:flex;flex-direction:column;gap:6px;flex:1 1 auto;overflow-y:auto;padding:4px 0 8px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;height:44px;padding:0 14px;
  border-radius:12px;font-size:14px;color:var(--text-2);
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.nav-item i{width:18px;text-align:center;font-size:15px;flex:0 0 18px}
.nav-item:hover{background:var(--glass);color:var(--text-1)}
.nav-item.is-active{color:var(--text-1);background:linear-gradient(90deg,rgba(108,76,246,.24),rgba(108,76,246,.04))}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:var(--r-pill);
  background:var(--brand-1);box-shadow:0 0 12px rgba(108,76,246,.9);
}
.nav-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px}
.btn-nav-cta{
  display:flex;align-items:center;justify-content:center;height:44px;border-radius:12px;
  font-size:14px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,#7A5BFF,#5A37E8);
  border:1px solid rgba(255,255,255,.14);
  box-shadow:0 8px 24px rgba(108,76,246,.4);
  transition:transform .22s var(--ease),filter .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-nav-cta:hover{transform:translateY(-1px);filter:brightness(1.08);color:#fff;box-shadow:0 12px 30px rgba(108,76,246,.55)}
.nav-note{font-size:12px;line-height:1.6;color:var(--text-3)}

/* ---------- 移动端顶栏与抽屉 ---------- */
.topbar{display:none}
.drawer.offcanvas{
  width:84vw;max-width:320px;color:var(--text-2);
  background:linear-gradient(180deg,#12102E,#07061A);
  border-right:1px solid var(--line);
}
.drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:12px 16px}
.drawer .offcanvas-body{display:flex;flex-direction:column;gap:16px;padding:16px}
.drawer-close{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  color:var(--text-1);display:inline-flex;align-items:center;justify-content:center;
}
.drawer-close:hover{background:var(--glass)}

/* ---------- 主内容骨架 ---------- */
.main-shell{margin-left:var(--shell-w);min-height:100vh;display:flex;flex-direction:column}
.page-wrap{width:100%;max-width:1200px;margin:0 auto;padding:32px 24px 128px;flex:1 1 auto}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:24px;
}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--brand-2)}
.crumb .sep{color:rgba(150,132,255,.35)}
.crumb .current{color:var(--text-1);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 按钮 ---------- */
.btn-x,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),filter .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease),color .22s var(--ease);
}
.btn-x{
  color:#fff;background:linear-gradient(135deg,#7A5BFF,#5A37E8);
  border:1px solid rgba(255,255,255,.16);
  box-shadow:0 10px 30px rgba(108,76,246,.38);
}
.btn-x:hover{transform:translateY(-2px);filter:brightness(1.08);color:#fff;box-shadow:0 16px 36px rgba(108,76,246,.5)}
.btn-x:active{transform:translateY(1px)}
.btn-ghost{
  color:var(--brand-2);border:1px solid rgba(47,217,200,.35);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
}
.btn-ghost:hover{color:#86F5E7;border-color:rgba(47,217,200,.7);background:linear-gradient(160deg,rgba(255,255,255,.13),rgba(255,255,255,.04))}
.btn-ghost:active{transform:translateY(1px)}
.btn-link-x{
  padding:0;font-size:13px;color:var(--text-2);
  text-decoration:underline;text-underline-offset:3px;background:none;border:0;
  transition:color .22s var(--ease),text-shadow .22s var(--ease);
}
.btn-link-x:hover{color:var(--text-1);text-shadow:0 0 10px rgba(108,76,246,.7)}

/* ---------- 文章头部 ---------- */
.article-sheet{
  border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.015));
  border:1px solid var(--line);
  box-shadow:var(--sh-card);
  padding:32px 32px 40px;
}
.article-head{max-width:820px}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12px;font-weight:600;color:var(--brand-2);
  border:1px solid rgba(47,217,200,.4);background:rgba(47,217,200,.08);
}
.article-title{
  margin:16px 0 14px;
  font-size:clamp(26px,3.2vw,40px);line-height:1.25;font-weight:800;color:var(--text-1);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-3)}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:rgba(150,132,255,.5)}
.meta-row i{margin-right:4px;color:var(--brand-2);font-size:12px}
.article-cover{
  margin:26px 0 8px;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line);background:#0B0A20;
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-cover figcaption{margin-top:10px;font-size:13px;color:var(--text-3);text-align:center}

/* ---------- 阅读区布局 ---------- */
.article-grid{display:grid;grid-template-columns:minmax(0,760px) 200px;gap:48px;justify-content:center;margin-top:36px}
.article-body{max-width:760px;font-size:16px;line-height:1.9;color:var(--text-2);word-wrap:break-word}
.article-body p{margin:0 0 1.4em}
.article-body h2{
  position:relative;margin:2em 0 .8em;padding-left:14px;
  font-size:clamp(21px,2.2vw,26px);line-height:1.35;font-weight:700;color:var(--text-1);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:var(--r-pill);
  background:var(--brand-1);box-shadow:0 0 12px rgba(108,76,246,.85);
}
.article-body h3{margin:1.7em 0 .7em;font-size:20px;line-height:1.4;font-weight:600;color:var(--text-1)}
.article-body h4{margin:1.4em 0 .6em;font-size:17px;font-weight:600;color:var(--text-1)}
.article-body a{color:var(--brand-2);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{text-shadow:0 0 10px rgba(47,217,200,.7)}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:0}
.article-body li{position:relative;padding-left:20px;margin-bottom:.6em}
.article-body ul>li::before{content:"✦";position:absolute;left:0;top:0;color:var(--brand-2);font-size:12px;line-height:1.9}
.article-body ol{counter-reset:olc}
.article-body ol>li{counter-increment:olc}
.article-body ol>li::before{
  content:counter(olc);position:absolute;left:0;top:.35em;
  width:16px;height:16px;border-radius:50%;font-size:11px;line-height:16px;text-align:center;
  color:var(--brand-2);border:1px solid rgba(47,217,200,.45);
}
.article-body blockquote{
  margin:0 0 1.4em;padding:16px 20px;border-radius:var(--r-img);
  border-left:3px solid var(--brand-2);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  color:var(--text-1);
}
.article-body img{border-radius:var(--r-img);margin:1.2em 0}
.article-body figure{margin:1.4em 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px}
.article-body table{
  display:block;width:100%;min-width:520px;overflow-x:auto;
  border-collapse:collapse;font-size:14px;margin:1.2em 0;
}
.article-body thead th{
  background:rgba(126,106,255,.10);color:var(--text-1);font-weight:600;text-align:left;
}
.article-body th,.article-body td{padding:10px 14px;border-bottom:1px solid var(--line);white-space:nowrap}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.article-body pre{
  overflow-x:auto;padding:16px 18px;border-radius:var(--r-img);
  background:rgba(4,2,24,.6);border:1px solid var(--line);font-size:13px;line-height:1.7;color:#D9D5FF;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}

/* ---------- 空态 ---------- */
.empty-state{
  min-height:260px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border-radius:var(--r-card);border:1px solid var(--line);background:var(--glass);
  padding:40px 24px;text-align:center;color:var(--text-2);
}
.empty-state .star{font-size:48px;line-height:1;color:var(--brand-1);text-shadow:0 0 22px rgba(108,76,246,.8)}

/* ---------- 目录 ---------- */
.toc{
  position:sticky;top:96px;align-self:start;width:200px;
  border-radius:var(--r-card);border:1px solid var(--line);
  background:var(--glass);padding:18px 16px;
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
}
.toc-title{font-size:13px;font-weight:700;color:var(--text-1);margin-bottom:10px}
.toc ul{display:flex;flex-direction:column;gap:8px}
.toc a{display:block;font-size:13px;line-height:1.6;color:var(--text-3);border-left:2px solid transparent;padding-left:10px}
.toc a:hover{color:var(--text-1)}
.toc a.is-current{color:var(--brand-2);border-left-color:var(--brand-2)}

/* ---------- 标签、关联、上下篇 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:40px 0 0}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);
  font-size:12px;color:var(--text-2);border:1px solid var(--line);background:var(--glass);
  transition:color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.tag:hover{color:var(--brand-2);border-color:rgba(47,217,200,.45);transform:translateY(-1px)}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.sec-head h2{font-size:clamp(21px,2.2vw,26px);font-weight:700;color:var(--text-1)}
.sec-head .more{font-size:13px;color:var(--brand-2)}
.sec-head .more i{margin-left:6px;transition:transform .22s var(--ease)}
.sec-head .more:hover i{transform:translateX(4px)}

.related{margin-top:72px}
.related-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rcard{
  display:flex;flex-direction:column;overflow:hidden;border-radius:var(--r-card);
  border:1px solid var(--line);background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  box-shadow:var(--sh-card);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.rcard:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(150,132,255,.4)}
.rcard-media{position:relative;overflow:hidden;background:#0B0A20}
.rcard-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s var(--ease)}
.rcard:hover .rcard-media img{transform:scale(1.04)}
.rcard-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.rcard-body h3{font-size:16px;line-height:1.5;font-weight:600;color:var(--text-1)}
.rcard-body p{
  font-size:14px;line-height:1.75;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.rcard-meta{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-3);margin-top:auto}
.rcard-more{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--brand-2)}
.rcard-more i{transition:transform .22s var(--ease)}
.rcard:hover .rcard-more i{transform:translateX(4px)}
.badge-mini{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;color:var(--brand-2);border:1px solid rgba(47,217,200,.4);background:rgba(47,217,200,.08);
}

.pager{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:56px}
.pager-item{
  display:flex;flex-direction:column;gap:8px;padding:20px 22px;border-radius:var(--r-card);
  border:1px solid var(--line);background:var(--glass);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.pager-item:hover{transform:translateY(-3px);border-color:rgba(150,132,255,.4);box-shadow:var(--sh-hover)}
.pager-item.next{text-align:right}
.pager-dir{font-size:12px;color:var(--text-3)}
.pager-dir i{color:var(--brand-2)}
.pager-title{font-size:15px;font-weight:600;line-height:1.6;color:var(--text-1)}

.sheet-actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px;margin-top:32px}
.sheet-actions .btn-link-x{font-size:14px}

/* ---------- 收口 CTA ---------- */
.cta-band{
  margin-top:64px;padding:32px;border-radius:var(--r-card);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(108,76,246,.18),rgba(47,217,200,.06));
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
}
.cta-band h2{font-size:clamp(20px,2.1vw,24px);font-weight:700;color:var(--text-1)}
.cta-band p{font-size:14px;color:var(--text-2);margin-top:6px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:72px;border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(14,12,36,.75),rgba(7,6,26,.95));
  padding:56px 0 96px;
}
.site-footer .shell{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1fr;gap:32px}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.foot-brand .brand-mark{flex:0 0 28px;width:28px;height:28px;border-radius:9px}
.foot-about{font-size:13px;line-height:1.8;color:var(--text-3);max-width:340px}
.foot-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.pill{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;color:var(--text-2);border:1px solid var(--line);background:var(--glass);
}
.pill i{color:var(--brand-2);font-size:11px}
.foot-title{font-size:14px;font-weight:700;color:var(--text-1);margin-bottom:14px}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{font-size:13px;color:var(--text-2)}
.foot-links a:hover{color:var(--text-1);text-decoration:underline;text-underline-offset:3px}
.foot-contact{font-size:13px;line-height:1.9;color:var(--text-3)}
.foot-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
}
.foot-bar-copy{display:flex;flex-wrap:wrap;gap:14px;font-size:12px;color:var(--text-3)}

/* ---------- 底部固定转化条 ---------- */
.fixed-bar{
  position:fixed;left:var(--shell-w);right:0;bottom:0;z-index:1060;height:56px;
  display:flex;align-items:center;gap:16px;padding:0 24px;
  background:linear-gradient(160deg,rgba(20,17,50,.9),rgba(9,7,28,.94));
  border-top:1px solid rgba(150,132,255,.22);
  box-shadow:var(--sh-bar);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transform:translateY(130%);opacity:0;pointer-events:none;
  transition:transform .3s var(--ease),opacity .3s var(--ease);
}
.fixed-bar.is-show{transform:translateY(0);opacity:1;pointer-events:auto}
.fixed-bar-tip{font-size:14px;color:var(--text-1)}
.fixed-bar-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.fixed-bar .btn-x,.fixed-bar .btn-ghost{height:38px;padding:0 18px;font-size:14px}
.bar-close{
  width:32px;height:32px;border-radius:10px;border:1px solid var(--line);
  color:var(--text-3);display:inline-flex;align-items:center;justify-content:center;
}
.bar-close:hover{color:var(--text-1);background:var(--glass)}

.to-top{
  position:fixed;right:24px;bottom:80px;z-index:1055;width:44px;height:44px;border-radius:14px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand-2);border:1px solid rgba(47,217,200,.35);
  background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.02));
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.to-top.is-show{opacity:1;transform:translateY(0);pointer-events:auto}
.to-top:hover{box-shadow:0 12px 28px rgba(47,217,200,.28)}

/* ---------- 响应式 ---------- */
@media (max-width:1399.98px){:root{--shell-w:232px}}
@media (max-width:1199.98px){
  :root{--shell-w:76px}
  .app-shell{padding:0 12px 20px;align-items:center}
  .app-shell .brand-text,
  .app-shell .nav-label,
  .app-shell .nav-note{display:none}
  .app-shell .nav-item{justify-content:center;padding:0}
  .app-shell .nav-item i{width:auto;font-size:17px}
  .app-shell .btn-nav-cta{width:44px;height:44px;padding:0;font-size:0}
  .app-shell .btn-nav-cta::before{content:"\f0da";font-family:"Font Awesome 6 Free";font-weight:900;font-size:15px}
  .article-grid{grid-template-columns:minmax(0,1fr)}
  .toc{display:none}
}
@media (max-width:991.98px){
  :root{--shell-w:0px}
  .app-shell{display:none}
  .main-shell{margin-left:0}
  .topbar{
    display:flex;align-items:center;gap:12px;position:sticky;top:0;z-index:1040;
    height:56px;padding:0 16px;
    background:rgba(9,7,28,.88);border-bottom:1px solid var(--line);
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  }
  .topbar-btn{
    width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
    display:inline-flex;align-items:center;justify-content:center;color:var(--text-1);
  }
  .topbar-btn:hover{background:var(--glass)}
  .topbar-brand{font-size:15px;font-weight:700;color:var(--text-1)}
  .topbar-cta{
    margin-left:auto;font-size:13px;font-weight:600;color:var(--brand-2);
    border:1px solid rgba(47,217,200,.35);padding:7px 12px;border-radius:var(--r-pill);
  }
  .page-wrap{padding:24px 20px 120px}
  .related-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767.98px){
  body{font-size:15px}
  .page-wrap{padding:20px 16px 132px}
  .article-sheet{padding:22px 18px 30px;border-radius:16px}
  .article-grid{margin-top:26px;gap:28px}
  .related-list{grid-template-columns:minmax(0,1fr)}
  .pager{grid-template-columns:minmax(0,1fr)}
  .pager-item.next{text-align:left}
  .cta-band{padding:24px 20px}
  .cta-actions{width:100%}
  .cta-actions .btn-x,.cta-actions .btn-ghost{flex:1 1 auto}
  .fixed-bar{height:64px;padding:0 16px;gap:12px}
  .fixed-bar-tip{display:none}
  .fixed-bar-actions{margin-left:0;width:100%}
  .fixed-bar .btn-x{flex:1 1 60%}
  .fixed-bar .btn-ghost{display:none}
  .to-top{right:16px;bottom:80px}
  .site-footer{padding-bottom:120px}
  .foot-grid{grid-template-columns:minmax(0,1fr);gap:26px}
}
@media (max-width:575.98px){
  .article-title{font-size:24px}
  .btn-x,.btn-ghost{max-width:100%}
  .btns .btn-x,.btns .btn-ghost{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

/* roulang page: category2 */
:root{
  --bg-deep:#07061A;
  --bg-panel:#0E0C24;
  --brand-1:#6C4CF6;
  --brand-2:#2FD9C8;
  --accent:#FF6A3D;
  --text-1:#F0EEFF;
  --text-2:#A8A3CC;
  --text-3:#6F6A96;
  --line:rgba(150,132,255,.16);
  --glass:rgba(126,106,255,.055);
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --r-pill:999px;
  --sh-card:0 12px 32px rgba(4,2,24,.45);
  --sh-hover:0 20px 44px rgba(108,76,246,.22);
  --sh-bar:0 -8px 28px rgba(4,2,24,.5);
  --shell-w:264px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --gap-sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--text-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(620px 420px at 78% -6%,rgba(108,76,246,.22),transparent 70%),
    radial-gradient(520px 380px at 6% 14%,rgba(47,217,200,.12),transparent 72%),
    radial-gradient(900px 620px at 50% 108%,rgba(108,76,246,.14),transparent 74%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.45;
  background-image:radial-gradient(rgba(240,238,255,.14) 1px,transparent 1px);
  background-size:42px 42px;
}
h1,h2,h3,h4{color:var(--text-1);margin:0;font-weight:700;letter-spacing:0}
h1{font-size:clamp(30px,4.2vw,48px);line-height:1.2;font-weight:800}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3}
h3{font-size:20px;line-height:1.4;font-weight:600}
p{margin:0 0 1em}
a{color:var(--brand-2);text-decoration:none;transition:color .22s var(--ease),opacity .22s var(--ease)}
a:hover{color:var(--text-1)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- App Shell ---------- */
.app-shell{
  position:fixed;top:0;left:0;bottom:0;width:var(--shell-w);z-index:1400;
  display:flex;flex-direction:column;
  padding:0 16px 18px;
  background:linear-gradient(180deg,rgba(14,12,36,.92),rgba(9,8,26,.94));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-right:1px solid transparent;
  transition:transform .26s var(--ease),width .26s var(--ease);
}
.app-shell::after{
  content:"";position:absolute;top:0;right:0;bottom:0;width:1px;
  background:linear-gradient(180deg,transparent,rgba(108,76,246,.6),rgba(47,217,200,.45),transparent);
}
.shell-brand{
  height:72px;display:flex;align-items:center;gap:12px;flex:0 0 auto;
}
.brand-mark{
  width:34px;height:34px;border-radius:11px;flex:0 0 auto;
  background:
    radial-gradient(circle at 30% 30%,rgba(255,255,255,.85),transparent 42%),
    conic-gradient(from 210deg,var(--brand-1),#3b2ea8 40%,var(--brand-2) 78%,var(--brand-1));
  box-shadow:0 0 0 1px rgba(150,132,255,.35),0 8px 22px rgba(108,76,246,.45);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{color:var(--text-1);font-size:17px;font-weight:800;letter-spacing:.4px}
.brand-tag{
  display:inline-block;margin-top:4px;align-self:flex-start;
  font-size:11px;padding:2px 8px;border-radius:var(--r-pill);
  color:var(--brand-2);border:1px solid rgba(47,217,200,.45);
  background:rgba(47,217,200,.08);
}
.side-nav{display:flex;flex-direction:column;gap:6px;margin-top:8px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 14px;border-radius:var(--r-btn);
  color:var(--text-2);font-size:15px;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.nav-item i{width:20px;text-align:center;font-size:15px;color:var(--text-3);transition:color .22s var(--ease)}
.nav-item:hover{background:var(--glass);color:var(--text-1)}
.nav-item:hover i{color:var(--brand-2)}
.nav-item.is-active{
  color:var(--text-1);font-weight:600;
  background:linear-gradient(90deg,rgba(108,76,246,.22),rgba(108,76,246,.03));
}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;
  background:var(--brand-1);box-shadow:0 0 12px rgba(108,76,246,.95);
}
.nav-item.is-active i{color:var(--brand-2)}
.shell-foot{margin-top:auto;padding-top:16px;display:flex;flex-direction:column;gap:10px}
.shell-note{font-size:12px;line-height:1.7;color:var(--text-3);margin:0}

/* ---------- Buttons ---------- */
.btn-a{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;border:1px solid transparent;
  cursor:pointer;transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn-primary{
  background:linear-gradient(180deg,#7a5bff,var(--brand-1));
  color:#fff;box-shadow:0 10px 30px rgba(108,76,246,.38),inset 0 1px 0 rgba(255,255,255,.28);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);color:#fff;box-shadow:0 16px 36px rgba(108,76,246,.5),inset 0 1px 0 rgba(255,255,255,.4)}
.btn-primary:active{transform:translateY(-1px)}
.btn-ghost{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border-color:var(--line);color:var(--brand-2);
  backdrop-filter:blur(12px) saturate(140%);-webkit-backdrop-filter:blur(12px) saturate(140%);
}
.btn-ghost:hover{border-color:rgba(47,217,200,.55);color:var(--text-1);background:rgba(47,217,200,.10);transform:translateY(-2px)}
.btn-block{width:100%}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-link-x{
  background:none;border:0;padding:4px 0;color:var(--text-2);font-size:13px;cursor:pointer;
  border-bottom:1px solid transparent;transition:color .22s var(--ease),border-color .22s var(--ease);
}
.btn-link-x:hover{color:var(--brand-2);border-color:rgba(47,217,200,.5)}
.link-more{font-size:14px;color:var(--brand-2);display:inline-flex;align-items:center;gap:6px}
.link-more i{transition:transform .22s var(--ease)}
.link-more:hover i{transform:translateX(4px)}

/* ---------- Layout ---------- */
.main,.site-footer{
  position:relative;z-index:1;
  margin-left:var(--shell-w);
  transition:margin-left .26s var(--ease);
}
.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.sec{padding:var(--gap-sec) 0 0}
.sec-head{margin-bottom:32px;max-width:760px}
.sec-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;
  color:var(--brand-2);text-transform:uppercase;margin-bottom:12px;
}
.sec-head .eyebrow::before{content:"";width:22px;height:1px;background:var(--brand-2);opacity:.7}
.sec-head p{margin-top:12px;font-size:15.5px;color:var(--text-2)}
.sec-title{position:relative;padding-left:16px}
.sec-title::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--brand-1),var(--brand-2));
  box-shadow:0 0 16px rgba(108,76,246,.7);
}
.glass{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);
  border-radius:var(--r-card);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  box-shadow:var(--sh-card);
}

/* ---------- Mobile bar ---------- */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:1450;
  align-items:center;gap:12px;padding:0 16px;
  background:rgba(10,9,28,.9);
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.menu-toggle{
  width:38px;height:38px;border-radius:11px;border:1px solid var(--line);
  background:var(--glass);color:var(--text-1);font-size:16px;display:inline-flex;
  align-items:center;justify-content:center;cursor:pointer;
}
.mobile-brand{color:var(--text-1);font-weight:700;font-size:15px;flex:1 1 auto;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.shell-overlay{
  display:none;position:fixed;inset:0;z-index:1390;background:rgba(4,2,18,.66);
  backdrop-filter:blur(2px);opacity:0;transition:opacity .24s var(--ease);
}
.shell-overlay.is-open{opacity:1}

/* ---------- Hero ---------- */
.hero{padding:56px 0 0}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;min-height:520px}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px;flex-wrap:wrap}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--brand-2)}
.crumb span.sep{color:var(--text-3);opacity:.6}
.crumb .crumb-cur{color:var(--brand-2)}
.hero h1{margin-bottom:16px}
.hero-sub{font-size:17px;color:var(--text-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 30px}
.hero-metrics{
  display:flex;flex-wrap:wrap;gap:22px;
  border-top:1px solid var(--line);padding-top:20px;
}
.hero-metrics li{display:flex;flex-direction:column;gap:2px;padding-right:22px;border-right:1px solid var(--line)}
.hero-metrics li:last-child{border-right:0;padding-right:0}
.m-num{font-size:20px;font-weight:700;color:var(--text-1);font-variant-numeric:tabular-nums}
.m-label{font-size:13px;color:var(--text-3)}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-card);
  border:1px solid var(--line);background:#12102c;
}
.glass-card{
  position:absolute;padding:14px 16px;border-radius:14px;font-size:13px;color:var(--text-2);
  background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.03));
  border:1px solid var(--line);box-shadow:var(--sh-card);
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
}
.glass-card strong{display:block;color:var(--text-1);font-size:16px;font-variant-numeric:tabular-nums;margin-bottom:2px}
.card-a{left:-18px;bottom:-22px;min-width:158px}
.card-b{right:-14px;top:-20px;min-width:140px}

/* ---------- Anchor nav ---------- */
.anchor-nav{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:64px;padding:14px 16px;
  border-radius:var(--r-card);border:1px solid var(--line);background:var(--glass);
}
.anchor-nav a{
  font-size:14px;color:var(--text-2);padding:7px 14px;border-radius:var(--r-pill);
  border:1px solid transparent;transition:all .22s var(--ease);
}
.anchor-nav a:hover{color:var(--text-1);background:rgba(108,76,246,.14);border-color:rgba(150,132,255,.35)}

/* ---------- Overview ---------- */
.overview{display:grid;grid-template-columns:6fr 5fr;gap:40px;align-items:start}
.overview-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--line);background:#12102c;
}
.dot-list{display:flex;flex-direction:column;gap:12px;margin-top:20px}
.dot-list li{position:relative;padding-left:22px;font-size:15px;color:var(--text-2)}
.dot-list li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--brand-2);box-shadow:0 0 10px rgba(47,217,200,.85);
}
.note-inline{
  margin-top:22px;padding:14px 16px;border-radius:14px;font-size:13.5px;color:var(--text-2);
  border:1px solid var(--line);background:var(--glass);
}

/* ---------- Timeline ---------- */
.timeline{position:relative;display:flex;flex-direction:column;gap:24px;padding-left:50px}
.timeline::before{
  content:"";position:absolute;left:19px;top:6px;bottom:6px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,rgba(108,76,246,.9),rgba(47,217,200,.5),rgba(108,76,246,.08));
  box-shadow:0 0 16px rgba(108,76,246,.5);
}
.tl-item{position:relative}
.tl-node{
  position:absolute;left:-50px;top:8px;width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--text-1);
  background:rgba(14,12,36,.9);border:1px solid rgba(150,132,255,.35);
  box-shadow:0 0 0 4px rgba(108,76,246,.10);
}
.tl-item.is-current .tl-node{
  background:linear-gradient(180deg,#7a5bff,var(--brand-1));border-color:transparent;
  box-shadow:0 0 0 5px rgba(108,76,246,.18),0 0 20px rgba(108,76,246,.7);
}
.tl-body{padding:22px 24px;border-radius:var(--r-card)}
.tl-body h3{margin-bottom:10px}
.tl-body p{font-size:15px;margin-bottom:10px}
.tl-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.tag{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;padding:4px 12px;
  border-radius:var(--r-pill);color:var(--brand-2);border:1px solid rgba(47,217,200,.4);
  background:rgba(47,217,200,.08);
}
.tag.warm{color:var(--accent);border-color:rgba(255,106,61,.45);background:rgba(255,106,61,.10)}

/* ---------- Scenes ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene-card{padding:24px;border-radius:var(--r-card);display:flex;flex-direction:column;gap:10px;transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)}
.scene-card:hover{transform:translateY(-6px);box-shadow:var(--sh-hover);border-color:rgba(150,132,255,.4)}
.scene-card .ico{
  width:44px;height:44px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  font-size:18px;color:var(--brand-2);background:rgba(47,217,200,.10);border:1px solid rgba(47,217,200,.3);
}
.scene-card h3{font-size:18px}
.scene-card p{font-size:14.5px;margin:0}

/* ---------- Stats ---------- */
.stats-band{
  margin-top:32px;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  border-radius:var(--r-card);overflow:hidden;background:var(--line);
  border:1px solid var(--line);
}
.stat-cell{padding:26px 22px;background:rgba(14,12,36,.72)}
.stat-cell .val{font-size:34px;font-weight:800;color:var(--text-1);font-variant-numeric:tabular-nums;line-height:1.1}
.stat-cell .val em{font-style:normal;font-size:16px;color:var(--brand-2);margin-left:4px}
.stat-cell .lab{font-size:13px;color:var(--text-3);margin-top:6px}

/* ---------- FAQ ---------- */
.faq-acc .accordion-item{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);border-radius:var(--r-card) !important;
  margin-bottom:12px;overflow:hidden;
  backdrop-filter:blur(12px) saturate(140%);-webkit-backdrop-filter:blur(12px) saturate(140%);
}
.faq-acc .accordion-item:last-child{margin-bottom:0}
.faq-acc .accordion-button{
  background:transparent;color:var(--text-1);font-size:16.5px;font-weight:600;
  padding:18px 22px;box-shadow:none;border-radius:var(--r-card) !important;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--text-1);background:rgba(108,76,246,.12)}
.faq-acc .accordion-button:focus{box-shadow:0 0 0 2px rgba(47,217,200,.55);z-index:2}
.faq-acc .accordion-button::after{
  content:"+";background-image:none !important;
  width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  color:var(--brand-2);font-size:16px;line-height:1;display:flex;align-items:center;justify-content:center;
  transition:transform .2s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{content:"–";transform:rotate(180deg)}
.faq-acc .accordion-body{padding:4px 22px 22px;font-size:15px;color:var(--text-2)}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:var(--gap-sec);padding:40px;border-radius:var(--r-card);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  background:
    radial-gradient(420px 220px at 12% 0%,rgba(108,76,246,.28),transparent 70%),
    linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  border:1px solid var(--line);box-shadow:var(--sh-card);
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
}
.cta-band h2{font-size:clamp(22px,2.2vw,28px);margin-bottom:8px}
.cta-band p{margin:0;font-size:14.5px}

/* ---------- Related ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:flex;flex-direction:column;overflow:hidden;border-radius:var(--r-card);
  border:1px solid var(--line);background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.rel-card:hover{transform:translateY(-6px);box-shadow:var(--sh-hover);border-color:rgba(150,132,255,.4)}
.rel-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#12102c}
.rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:8px}
.rel-body h3{font-size:17px}
.rel-body p{font-size:14px;margin:0;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- Footer ---------- */
.site-footer{margin-top:var(--gap-sec);border-top:1px solid var(--line);background:rgba(11,9,30,.7);padding-bottom:96px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1.2fr;gap:32px;padding:56px 0 36px}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.foot-about{font-size:13.5px;line-height:1.8;color:var(--text-3);max-width:340px}
.foot-title{color:var(--text-1);font-size:14px;font-weight:600;margin-bottom:14px}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{font-size:13.5px;color:var(--text-2);position:relative;padding-bottom:2px;display:inline-block;width:fit-content}
.foot-links a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:1px;background:var(--brand-2);
  transition:right .24s var(--ease);
}
.foot-links a:hover{color:var(--text-1)}
.foot-links a:hover::after{right:0}
.foot-contact{font-size:13.5px;line-height:1.9;color:var(--text-3)}
.foot-pills{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.pill{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;padding:5px 12px;border-radius:var(--r-pill);
  color:var(--text-2);border:1px solid var(--line);background:var(--glass);
}
.foot-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:18px 0 26px;border-top:1px solid var(--line);
}
.foot-bar-copy{display:flex;flex-wrap:wrap;gap:14px;font-size:12.5px;color:var(--text-3)}

/* ---------- Sticky bar ---------- */
.cta-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1500;height:56px;
  display:flex;align-items:center;gap:16px;
  padding:0 20px;
  background:linear-gradient(180deg,rgba(18,15,44,.86),rgba(10,9,28,.94));
  border-top:1px solid rgba(150,132,255,.28);
  box-shadow:var(--sh-bar);
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  transform:translateY(110%);opacity:0;pointer-events:none;
  transition:transform .26s var(--ease),opacity .26s var(--ease);
}
.cta-bar.is-visible{transform:translateY(0);opacity:1;pointer-events:auto}
.cta-bar .bar-text{font-size:14px;color:var(--text-2);flex:1 1 auto;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cta-bar .bar-actions{display:flex;align-items:center;gap:10px}
.bar-close{
  width:32px;height:32px;border-radius:10px;border:1px solid var(--line);background:var(--glass);
  color:var(--text-2);cursor:pointer;font-size:13px;display:inline-flex;align-items:center;justify-content:center;
  transition:color .22s var(--ease),border-color .22s var(--ease);
}
.bar-close:hover{color:var(--text-1);border-color:rgba(150,132,255,.5)}

/* ---------- Responsive ---------- */
@media (max-width:1399.98px){
  :root{--shell-w:232px;--gap-sec:84px}
}
@media (max-width:1199.98px){
  :root{--shell-w:76px;--gap-sec:76px}
  .app-shell{padding:0 12px 18px;align-items:center}
  .brand-text,.nav-label,.shell-note{display:none}
  .shell-brand{justify-content:center;height:64px}
  .nav-item{justify-content:center;padding:0;width:48px}
  .nav-item::after{
    content:attr(title);position:absolute;left:56px;top:50%;transform:translateY(-50%) scale(.96);
    background:rgba(14,12,36,.96);color:var(--text-1);font-size:12.5px;padding:6px 10px;border-radius:8px;
    border:1px solid var(--line);white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .2s var(--ease),transform .2s var(--ease);
  }
  .nav-item:hover::after{opacity:1;transform:translateY(-50%) scale(1)}
  .shell-foot{align-items:center;width:100%}
  .shell-foot .btn-a{padding:10px;font-size:13px;width:48px}
  .shell-foot .btn-a span.bt{display:none}
  .nav-item.is-active::before{left:-6px}
  .foot-grid{grid-template-columns:1.6fr 1fr 1fr;gap:28px}
}
@media (max-width:991.98px){
  :root{--gap-sec:72px}
  .mobile-bar{display:flex}
  .app-shell{
    width:min(84vw,320px);padding:0 16px 18px;align-items:stretch;
    transform:translateX(-104%);
    background:linear-gradient(180deg,rgba(14,12,36,.98),rgba(9,8,26,.99));
  }
  .app-shell.is-open{transform:translateX(0)}
  .brand-text,.nav-label,.shell-note{display:block}
  .shell-brand{justify-content:flex-start;height:64px}
  .nav-item{justify-content:flex-start;padding:0 14px;width:auto}
  .nav-item::after{display:none}
  .shell-foot{align-items:stretch;width:auto}
  .shell-foot .btn-a{padding:12px 22px;font-size:15px;width:100%}
  .shell-foot .btn-a span.bt{display:inline}
  .nav-item.is-active::before{left:0}
  .main,.site-footer{margin-left:0}
  .main{padding-top:56px}
  .hero{padding-top:36px}
  .hero-grid{grid-template-columns:1fr;min-height:0;gap:28px}
  .hero-visual{order:-1}
  .card-a{left:8px;bottom:-18px}
  .card-b{right:8px;top:-16px}
  .overview{grid-template-columns:1fr;gap:28px}
  .scene-grid,.rel-grid{grid-template-columns:repeat(2,1fr)}
  .stats-band{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:26px}
  .site-footer{padding-bottom:110px}
}
@media (max-width:767.98px){
  :root{--gap-sec:56px}
  .shell{padding:0 16px}
  .hero-metrics{gap:16px}
  .hero-metrics li{padding-right:16px}
  .anchor-nav{display:none}
  .timeline{
    flex-direction:row;padding-left:0;gap:16px;overflow-x:auto;
    scroll-snap-type:x mandatory;padding-bottom:8px;
    -webkit-overflow-scrolling:touch;
  }
  .timeline::before{display:none}
  .tl-item{min-width:78%;scroll-snap-align:start;position:relative;padding-top:52px}
  .tl-node{left:0;top:0}
  .tl-body{padding:20px}
  .scene-grid,.rel-grid{grid-template-columns:1fr}
  .cta-band{padding:26px 22px}
  .cta-bar{height:64px;padding:0 14px}
  .cta-bar .bar-text{display:none}
  .cta-bar .bar-actions{flex:1 1 auto}
  .cta-bar .bar-actions .btn-primary{flex:1 1 60%}
  .foot-grid{grid-template-columns:1fr;padding-top:40px}
}
@media (max-width:575.98px){
  body{font-size:15.5px}
  .stats-band{grid-template-columns:1fr}
  .hero-actions .btn-a{width:100%}
  .stat-cell{padding:20px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}
section[id]{scroll-margin-top:80px}

/* roulang page: category3 */
:root{
  --bg-deep:#07061A;
  --bg-panel:#0E0C24;
  --brand-1:#6C4CF6;
  --brand-2:#2FD9C8;
  --accent:#FF6A3D;
  --text-1:#F0EEFF;
  --text-2:#A8A3CC;
  --text-3:#6F6A96;
  --line:rgba(150,132,255,.16);
  --line-soft:rgba(150,132,255,.09);
  --glass:rgba(126,106,255,.055);
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --r-pill:999px;
  --shadow-card:0 12px 32px rgba(4,2,24,.45);
  --shadow-hover:0 20px 44px rgba(108,76,246,.22);
  --shadow-bar:0 -8px 28px rgba(4,2,24,.5);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-w:264px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.85;color:var(--text-1);
  background-color:var(--bg-deep);
  background-image:
    radial-gradient(circle at 12% 6%,rgba(108,76,246,.24),transparent 44%),
    radial-gradient(circle at 90% 3%,rgba(47,217,200,.13),transparent 42%),
    radial-gradient(circle at 50% 108%,rgba(255,106,61,.08),transparent 42%);
  background-attachment:fixed;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:radial-gradient(rgba(240,238,255,.05) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 72%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 72%);
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-2);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:#fff}
h1,h2,h3,h4{margin:0 0 12px;font-weight:700;letter-spacing:0;line-height:1.3}
h1{font-size:clamp(30px,4.2vw,46px);font-weight:800;line-height:1.2}
h2{font-size:clamp(24px,2.6vw,34px)}
h3{font-size:20px;font-weight:600;line-height:1.4}
p{margin:0 0 14px}
ul{margin:0;padding:0;list-style:none}
figure{margin:0}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px}
.tnum{font-variant-numeric:tabular-nums}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand-1);color:#fff;padding:10px 16px;border-radius:8px;z-index:200}
.skip-link:focus{left:12px;top:12px}

/* ---------- 左侧 App Shell ---------- */
.app-side{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);z-index:60;
  display:flex;flex-direction:column;padding:0 14px 18px;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015)),rgba(10,8,30,.74);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-right:1px solid var(--line);
  transition:width .22s var(--ease),transform .26s var(--ease);
}
.side-head{height:72px;display:flex;align-items:center;flex:none}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{
  position:relative;width:30px;height:30px;flex:none;border-radius:10px;
  background:radial-gradient(circle at 32% 26%,rgba(47,217,200,.95),transparent 58%),linear-gradient(140deg,var(--brand-1),#261670);
  box-shadow:0 0 0 1px rgba(150,132,255,.35),0 6px 18px rgba(108,76,246,.45);
}
.brand-mark::after{
  content:"";position:absolute;right:5px;bottom:5px;width:5px;height:5px;border-radius:50%;
  background:#F0EEFF;box-shadow:0 0 8px rgba(240,238,255,.9);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:15px;font-weight:700;color:var(--text-1)}
.brand-tag{font-size:11px;color:var(--brand-2);letter-spacing:.08em}
.side-nav{display:flex;flex-direction:column;gap:6px;flex:1;overflow-y:auto;padding-top:6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 14px;border-radius:12px;
  color:var(--text-2);font-size:14.5px;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-item i{width:18px;text-align:center;font-size:15px;flex:none;color:var(--text-3);transition:color .2s var(--ease)}
.nav-item:hover{background:var(--glass);color:var(--text-1)}
.nav-item:hover i{color:var(--brand-2)}
.nav-item.is-active{background:rgba(108,76,246,.17);color:#fff}
.nav-item.is-active i{color:var(--brand-2)}
.nav-item.is-active::before{
  content:"";position:absolute;left:-14px;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:0 3px 3px 0;background:var(--brand-1);
  box-shadow:0 0 12px rgba(108,76,246,.95);
}
.side-foot{margin-top:14px;flex:none}
.side-cta{width:100%;justify-content:center}
.side-note{margin:12px 0 0;font-size:12px;line-height:1.7;color:var(--text-3)}

/* ---------- 顶栏（移动端） ---------- */
.topbar{
  position:sticky;top:0;z-index:70;display:none;align-items:center;gap:12px;
  height:56px;padding:0 14px;
  background:rgba(10,8,30,.84);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.topbar-toggle{
  width:38px;height:38px;flex:none;display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;border:1px solid var(--line);background:var(--glass);color:var(--text-1);
}
.topbar-toggle:hover{border-color:rgba(47,217,200,.5);color:var(--brand-2)}
.topbar .brand{flex:1;min-width:0}
.topbar .btn-primary{height:36px;padding:0 14px;font-size:13.5px;border-radius:10px}
.scrim{
  position:fixed;inset:0;z-index:55;display:none;
  background:rgba(4,2,24,.62);backdrop-filter:blur(2px);
}
body.drawer-open .scrim{display:block}

/* ---------- 主区 ---------- */
.shell{margin-left:var(--nav-w);position:relative;z-index:1;padding:34px 0 0;transition:margin-left .22s var(--ease)}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.sec{margin-bottom:96px;scroll-margin-top:96px}

/* ---------- 按钮 ---------- */
.btn-primary,.btn-ghost,.btn-link-x{display:inline-flex;align-items:center;justify-content:center;gap:8px}
.btn-primary{
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  background:linear-gradient(140deg,#7d5cff,var(--brand-1));
  color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 10px 30px rgba(108,76,246,.38);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
}
.btn-primary:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 16px 36px rgba(108,76,246,.52)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  border:1px solid rgba(47,217,200,.42);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  color:var(--brand-2);font-size:15px;font-weight:600;
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
}
.btn-ghost:hover{color:#fff;transform:translateY(-2px);border-color:var(--brand-2);background:rgba(47,217,200,.12)}
.btn-ghost:active{transform:translateY(1px)}
.btn-link-x{
  padding:4px 0;color:var(--brand-2);font-size:14px;font-weight:600;
  border-bottom:1px solid rgba(47,217,200,.35);
  transition:color .2s var(--ease),border-color .2s var(--ease),text-shadow .2s var(--ease);
}
.btn-link-x:hover{color:#fff;border-color:#fff;text-shadow:0 0 12px rgba(47,217,200,.7)}

/* ---------- 玻璃 ---------- */
.glass{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--brand-2)}
.crumb .sep{color:var(--text-3);opacity:.7}
.crumb .cur{color:var(--text-1);font-weight:600}

/* ---------- Hero ---------- */
.hero-x{padding-top:6px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(47,217,200,.35);
  background:rgba(47,217,200,.08);
  color:var(--brand-2);font-size:12.5px;font-weight:600;letter-spacing:.04em;
  margin-bottom:18px;
}
.lead-x{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:24px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px}
.micro-row{display:flex;flex-wrap:wrap;gap:0;border-top:1px solid var(--line);padding-top:18px}
.micro-row li{padding-right:26px;margin-right:26px;border-right:1px solid var(--line)}
.micro-row li:last-child{border-right:0;margin-right:0;padding-right:0}
.micro-num{display:block;font-size:20px;font-weight:700;color:var(--text-1);font-variant-numeric:tabular-nums;line-height:1.3}
.micro-txt{display:block;font-size:12.5px;color:var(--text-3)}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--line);
  background:linear-gradient(140deg,#1a1440,#0d0a26);
}
.hv-card{
  position:absolute;left:-18px;bottom:20px;
  display:flex;align-items:center;gap:12px;
  padding:14px 18px;border-radius:16px;
  background:linear-gradient(160deg,rgba(255,255,255,.1),rgba(255,255,255,.03));
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(150%);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  box-shadow:var(--shadow-card);
}
.hv-num{font-size:28px;font-weight:800;color:var(--brand-2);font-variant-numeric:tabular-nums;line-height:1}
.hv-txt{font-size:12.5px;color:var(--text-2);line-height:1.5}

/* ---------- 页内锚点 ---------- */
.anchor-bar{
  position:sticky;top:14px;z-index:40;
  display:flex;flex-wrap:wrap;gap:8px;
  padding:10px;margin-bottom:72px;
  border-radius:var(--r-pill);
  background:rgba(14,12,36,.78);
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.anchor-bar a{
  padding:8px 18px;border-radius:var(--r-pill);
  font-size:13.5px;color:var(--text-2);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.anchor-bar a:hover{background:rgba(108,76,246,.2);color:#fff}

/* ---------- 区块标题 ---------- */
.sec-eyebrow{font-size:13px;color:var(--brand-2);font-weight:600;letter-spacing:.08em;margin-bottom:10px}
.sec-head{max-width:720px;margin-bottom:32px}
.sec-sub{color:var(--text-2);margin:0}

/* ---------- 对比矩阵 ---------- */
.table-scroll{
  overflow-x:auto;border-radius:var(--r-card);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  box-shadow:var(--shadow-card);
}
.matrix{width:100%;min-width:660px;border-collapse:separate;border-spacing:0;font-size:15px}
.matrix thead th{
  padding:18px 22px;text-align:left;font-size:14px;font-weight:600;color:var(--text-1);
  background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.025));
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.matrix thead th i{color:var(--brand-2);margin-right:8px}
.matrix td{
  padding:18px 22px;vertical-align:top;color:var(--text-2);
  border-bottom:1px solid var(--line-soft);
  line-height:1.75;
}
.matrix tbody tr:last-child td{border-bottom:0}
.matrix tbody tr:hover td{background:rgba(126,106,255,.05)}
.matrix .cell-label{display:block;color:var(--text-1);font-weight:600;margin-bottom:4px}

/* ---------- 要点卡 ---------- */
.point-card{
  height:100%;padding:24px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.015));
  box-shadow:var(--shadow-card);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.point-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(150,132,255,.4)}
.point-idx{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:38px;height:26px;padding:0 10px;margin-bottom:14px;
  border-radius:8px;border:1px solid rgba(47,217,200,.45);
  color:var(--brand-2);font-size:12.5px;font-weight:700;letter-spacing:.08em;
  font-variant-numeric:tabular-nums;
}
.point-card h3{font-size:17px;margin-bottom:8px}
.point-card p{margin:0;font-size:14.5px;color:var(--text-2)}

/* ---------- 场景区 ---------- */
.scene-list li{
  position:relative;padding-left:24px;margin-bottom:14px;color:var(--text-2);font-size:15px;
}
.scene-list li::before{
  content:"";position:absolute;left:0;top:12px;width:8px;height:8px;
  border-radius:50%;background:var(--brand-2);
  box-shadow:0 0 10px rgba(47,217,200,.9);
}
.scene-list strong{color:var(--text-1);font-weight:600}
.mock-window{
  border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.018));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.mock-bar{display:flex;align-items:center;gap:7px;padding:13px 18px;border-bottom:1px solid var(--line)}
.mock-bar span{width:9px;height:9px;border-radius:50%;background:rgba(168,163,204,.35)}
.mock-bar span:first-child{background:rgba(255,106,61,.6)}
.mock-bar span:nth-child(2){background:rgba(47,217,200,.55)}
.mock-body{padding:20px 20px 24px}
.mock-row{display:grid;grid-template-columns:88px 1fr 54px;align-items:center;gap:14px;margin-bottom:16px}
.mock-row:last-child{margin-bottom:0}
.mock-k{font-size:13px;color:var(--text-2)}
.mock-track{height:8px;border-radius:var(--r-pill);background:rgba(126,106,255,.13);overflow:hidden}
.mock-fill{display:block;height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--brand-1),var(--brand-2))}
.mock-v{font-size:13px;color:var(--text-1);text-align:right;font-variant-numeric:tabular-nums}
.w-78{width:78%}.w-64{width:64%}.w-57{width:57%}.w-46{width:46%}.w-38{width:38%}

/* ---------- FAQ ---------- */
.faq-acc .accordion-item{
  margin-bottom:12px;border:1px solid var(--line);border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.015));
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.faq-acc .accordion-item:hover{border-color:rgba(150,132,255,.38);box-shadow:var(--shadow-hover)}
.faq-acc .accordion-button{
  padding:20px 22px;background:transparent;color:var(--text-1);
  font-size:16.5px;font-weight:600;line-height:1.5;
  box-shadow:none;border-radius:0;
}
.faq-acc .accordion-button:not(.collapsed){color:#fff;background:rgba(108,76,246,.1)}
.faq-acc .accordion-button::after{
  width:16px;height:16px;background-size:16px;background-image:none;
  content:"+";font-size:20px;font-weight:400;color:var(--brand-2);
  display:flex;align-items:center;justify-content:center;
  transform:rotate(0);transition:transform .2s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{content:"–";transform:rotate(180deg)}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq-acc .accordion-button:focus-visible{outline:2px solid var(--brand-2);outline-offset:-3px}
.faq-acc .accordion-body{padding:2px 22px 22px;color:var(--text-2);font-size:15px;line-height:1.8}

/* ---------- CTA 横幅 ---------- */
.cta-banner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  padding:34px 36px;border-radius:var(--r-card);
  border:1px solid rgba(150,132,255,.28);
  background:
    radial-gradient(circle at 88% 12%,rgba(47,217,200,.16),transparent 52%),
    linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.cta-banner h2{font-size:clamp(21px,2.2vw,27px);margin-bottom:8px}
.cta-banner p{margin:0;color:var(--text-2);font-size:15px}
.cta-banner-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 相关分类卡 ---------- */
.cat-card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  border-radius:var(--r-card);border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.015));
  box-shadow:var(--shadow-card);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(150,132,255,.42)}
.cat-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-bottom:1px solid var(--line);background:linear-gradient(140deg,#1a1440,#0d0a26)}
.cat-card-body{padding:20px 22px 22px}
.cat-badge{
  display:inline-block;padding:4px 12px;margin-bottom:10px;border-radius:var(--r-pill);
  border:1px solid rgba(47,217,200,.4);background:rgba(47,217,200,.08);
  color:var(--brand-2);font-size:12px;font-weight:600;
}
.cat-card h3{font-size:17px;margin-bottom:8px}
.cat-card p{font-size:14px;color:var(--text-2);margin:0 0 14px}
.cat-more{font-size:14px;font-weight:600;color:var(--brand-2);display:inline-flex;align-items:center;gap:6px}
.cat-more i{transition:transform .2s var(--ease)}
.cat-card:hover .cat-more i{transform:translateX(4px)}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;z-index:1;
  margin-top:96px;padding:64px 0 120px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(14,12,36,.4),rgba(7,6,26,.9));
}
.foot-grid{display:grid;grid-template-columns:2.1fr 1fr 1fr 1fr 1.3fr;gap:32px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.foot-about{font-size:14px;color:var(--text-2);max-width:360px;margin:0 0 18px}
.foot-pills{display:flex;flex-wrap:wrap;gap:8px}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--glass);
  color:var(--text-2);font-size:12.5px;
}
.pill i{color:var(--brand-2)}
.foot-title{font-size:14px;font-weight:600;color:var(--text-1);margin:0 0 16px}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{
  font-size:14px;color:var(--text-2);width:fit-content;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.foot-links a:hover{color:#fff;border-color:rgba(47,217,200,.6)}
.foot-contact{font-size:13.5px;color:var(--text-2);line-height:1.9;margin:0}
.foot-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
}
.foot-bar-copy{display:flex;flex-wrap:wrap;gap:18px;font-size:12.5px;color:var(--text-3)}

/* ---------- 底部固定转化条 ---------- */
.cta-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  transform:translateY(120%);opacity:0;pointer-events:none;
  background:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.02)),rgba(10,8,30,.86);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-top:1px solid rgba(150,132,255,.3);
  box-shadow:var(--shadow-bar);
  transition:transform .26s var(--ease),opacity .26s var(--ease);
}
.cta-bar.is-show{transform:translateY(0);opacity:1;pointer-events:auto}
.cta-bar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:56px}
.cta-bar-text{font-size:14px;color:var(--text-1);margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cta-bar-actions{display:flex;align-items:center;gap:10px}
.cta-bar .btn-primary{height:38px;padding:0 18px;font-size:14px}
.cta-bar .btn-ghost{height:38px;padding:0 16px;font-size:14px}
.cta-bar-close{
  width:34px;height:34px;flex:none;display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;border:1px solid var(--line);color:var(--text-3);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.cta-bar-close:hover{color:var(--text-1);border-color:rgba(150,132,255,.5)}

/* ---------- 响应式 ---------- */
@media (min-width:1200px) and (max-width:1399.98px){
  :root{--nav-w:232px}
}
@media (min-width:992px) and (max-width:1199.98px){
  :root{--nav-w:76px}
  .brand-text{display:none}
  .nav-label{display:none}
  .nav-item{justify-content:center;padding:0}
  .nav-item.is-active::before{left:-14px}
  .side-cta span{display:none}
  .side-note{display:none}
}
@media (max-width:991.98px){
  .app-side{
    width:min(84vw,320px);
    transform:translateX(-100%);
    box-shadow:0 0 60px rgba(4,2,24,.7);
  }
  .app-side.is-open{transform:translateX(0)}
  .shell{margin-left:0;padding-top:0}
  .topbar{display:flex}
  .sec{margin-bottom:72px}
  .anchor-bar{display:none}
  .hero-visual{margin-top:8px}
  .hv-card{left:12px;bottom:12px}
  .foot-grid{grid-template-columns:1fr 1fr 1fr}
  .site-footer{padding:52px 0 108px}
  .mock-row{grid-template-columns:76px 1fr 48px;gap:10px}
}
@media (max-width:767.98px){
  .wrap{padding:0 16px}
  .sec{margin-bottom:56px}
  body{font-size:15.5px}
  .lead-x{font-size:16px}
  .micro-row li{padding-right:18px;margin-right:18px}
  .micro-num{font-size:18px}
  .sec-head{margin-bottom:24px}
  .cta-banner{padding:26px 22px}
  .cta-banner-actions{width:100%}
  .cta-banner-actions .btn-primary,.cta-banner-actions .btn-ghost{flex:1 1 auto}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .cta-bar-inner{height:64px}
  .cta-bar-text{display:none}
  .cta-bar-actions{width:100%}
  .cta-bar .btn-primary{flex:1 1 60%}
  .foot-bar{flex-direction:column;align-items:flex-start}
  .matrix{min-width:600px}
}
@media (max-width:575.98px){
  h1{font-size:28px}
  h2{font-size:23px}
  .hero-actions .btn-primary,.hero-actions .btn-ghost{width:100%;max-width:100%}
  .micro-row{gap:14px 0}
  .micro-row li{border-right:0;padding-right:0;margin-right:22px}
  .point-card{padding:18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category4 */
:root{
  --bg-deep:#07061A;
  --bg-panel:#0E0C24;
  --brand-1:#6C4CF6;
  --brand-2:#2FD9C8;
  --accent:#FF6A3D;
  --text-1:#F0EEFF;
  --text-2:#A8A3CC;
  --text-3:#6F6A96;
  --line:rgba(150,132,255,.16);
  --glass:rgba(126,106,255,.055);
  --glass-strong:rgba(126,106,255,.10);
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow-card:0 12px 32px rgba(4,2,24,.45);
  --shadow-hover:0 20px 44px rgba(108,76,246,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --side-w:264px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  background:var(--bg-deep);
  color:var(--text-1);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(880px 560px at 84% -10%, rgba(108,76,246,.24), transparent 62%),
    radial-gradient(700px 520px at 4% 10%, rgba(47,217,200,.11), transparent 66%),
    radial-gradient(1.6px 1.6px at 18% 24%, rgba(255,255,255,.55), transparent 100%),
    radial-gradient(1.4px 1.4px at 62% 12%, rgba(255,255,255,.42), transparent 100%),
    radial-gradient(1.6px 1.6px at 34% 68%, rgba(180,170,255,.5), transparent 100%),
    radial-gradient(1.4px 1.4px at 78% 54%, rgba(47,217,200,.55), transparent 100%),
    radial-gradient(1.2px 1.2px at 48% 88%, rgba(255,255,255,.38), transparent 100%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.3;
  background-image:repeating-linear-gradient(180deg, rgba(255,255,255,.022) 0 1px, transparent 1px 4px);
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
p{margin:0 0 1.1em;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;border-radius:8px;}
::selection{background:rgba(108,76,246,.5);}

/* ============ 左侧 App Shell ============ */
.app-side{
  position:fixed;left:0;top:0;bottom:0;width:var(--side-w);z-index:60;
  display:flex;flex-direction:column;
  padding:0 16px 18px;
  background:linear-gradient(180deg, rgba(14,12,36,.96), rgba(7,6,26,.94));
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-right:1px solid var(--line);
  box-shadow:0 12px 32px rgba(4,2,24,.45);
  transition:transform .26s var(--ease);
}
.app-side::after{
  content:"";position:absolute;right:-1px;top:0;width:1px;height:100%;
  background:linear-gradient(180deg, transparent, rgba(108,76,246,.55), rgba(47,217,200,.4), transparent);
}
.side-brand{
  display:flex;align-items:center;gap:10px;height:72px;flex:0 0 72px;
  padding:0 8px;border-bottom:1px solid var(--line);margin-bottom:16px;
}
.brand-mark{
  width:34px;height:34px;border-radius:12px;flex:0 0 34px;position:relative;
  background:linear-gradient(150deg, #6C4CF6, #2FD9C8);
  box-shadow:0 0 0 1px rgba(255,255,255,.14) inset, 0 8px 22px rgba(108,76,246,.45);
}
.brand-mark::before{
  content:"";position:absolute;inset:9px;border-radius:50%;
  background:radial-gradient(circle at 35% 32%, #fff, rgba(255,255,255,0) 62%);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;overflow:hidden;}
.brand-name{font-size:16px;font-weight:800;color:var(--text-1);white-space:nowrap;}
.brand-tag{
  font-size:11px;color:var(--brand-2);letter-spacing:.06em;
  border:1px solid rgba(47,217,200,.4);border-radius:999px;
  padding:0 7px;margin-top:4px;align-self:flex-start;line-height:17px;white-space:nowrap;
}
.side-nav{display:flex;flex-direction:column;gap:6px;overflow-y:auto;flex:1 1 auto;padding-right:2px;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:var(--radius-btn);
  color:var(--text-2);font-size:14.5px;white-space:nowrap;
  border:1px solid transparent;
  transition:transform .2s var(--ease), background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}
.nav-item i{width:20px;text-align:center;font-size:15px;flex:0 0 20px;}
.nav-item:hover{background:var(--glass);color:var(--text-1);border-color:var(--line);}
.nav-item.is-active{
  background:linear-gradient(90deg, rgba(108,76,246,.22), rgba(108,76,246,.04));
  color:var(--text-1);border-color:rgba(108,76,246,.35);
}
.nav-item.is-active::before{
  content:"";position:absolute;left:-9px;top:9px;bottom:9px;width:3px;border-radius:3px;
  background:var(--brand-1);box-shadow:0 0 12px rgba(108,76,246,.9);
}
.nav-item.is-active i{color:var(--brand-2);}
.side-foot{flex:0 0 auto;padding-top:14px;border-top:1px solid var(--line);margin-top:14px;}
.side-foot-copy{font-size:12px;color:var(--text-3);line-height:1.7;margin-top:12px;}
.btn-glow{
  display:flex;align-items:center;justify-content:center;gap:8px;
  width:100%;height:44px;border-radius:var(--radius-btn);
  background:linear-gradient(140deg, var(--brand-1), #4B2FD6);
  color:#fff;font-weight:700;font-size:15px;
  box-shadow:0 10px 30px rgba(108,76,246,.38), inset 0 1px 0 rgba(255,255,255,.22);
  transition:transform .2s var(--ease), box-shadow .2s var(--ease), filter .2s var(--ease);
}
.btn-glow:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 16px 34px rgba(108,76,246,.5), inset 0 1px 0 rgba(255,255,255,.3);}
.btn-glow:active{transform:translateY(1px);}
.side-backdrop{
  position:fixed;inset:0;background:rgba(4,2,18,.65);backdrop-filter:blur(3px);
  z-index:55;opacity:0;pointer-events:none;transition:opacity .24s var(--ease);
}
.side-backdrop.is-open{opacity:1;pointer-events:auto;}

/* ============ 顶部栏（移动端） ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:70;
  align-items:center;gap:12px;padding:0 14px;
  background:rgba(10,8,28,.92);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.icon-btn{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line);background:var(--glass);color:var(--text-1);
  transition:background .2s var(--ease), border-color .2s var(--ease);
}
.icon-btn:hover{background:var(--glass-strong);border-color:rgba(108,76,246,.4);}
.topbar-brand{font-size:15px;font-weight:800;color:var(--text-1);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar .btn-primary-x{margin-left:auto;height:36px;padding:0 14px;font-size:13px;}

/* ============ 主内容 ============ */
.shell{
  position:relative;z-index:1;
  margin-left:var(--side-w);
  min-height:100vh;
  transition:margin-left .26s var(--ease);
}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:64px 0;}
.section:first-child{padding-top:44px;}

/* 面包屑 */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--text-3);padding:26px 0 0;}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--text-1);}
.crumb span.sep{color:var(--text-3);}
.crumb .cur{color:var(--brand-2);}

/* Hero */
.hero{
  position:relative;border-radius:24px;overflow:hidden;
  border:1px solid var(--line);
  background:
    linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.02)),
    radial-gradient(700px 420px at 88% 0%, rgba(108,76,246,.30), transparent 62%),
    var(--bg-panel);
  box-shadow:var(--shadow-card);
  padding:48px;
  margin-top:22px;
}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;color:var(--brand-2);letter-spacing:.04em;
  border:1px solid rgba(47,217,200,.36);background:rgba(47,217,200,.08);
  border-radius:999px;padding:5px 12px;margin-bottom:18px;
}
h1.hero-title{
  font-size:clamp(30px,4.2vw,46px);line-height:1.2;font-weight:800;margin-bottom:16px;
}
h1.hero-title em{font-style:normal;color:var(--brand-2);}
.hero-sub{font-size:16.5px;color:var(--text-2);max-width:560px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;}
.btn-primary-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  background:linear-gradient(140deg, var(--brand-1), #4B2FD6);
  color:#fff;font-weight:700;font-size:15.5px;
  box-shadow:0 10px 30px rgba(108,76,246,.38), inset 0 1px 0 rgba(255,255,255,.22);
  transition:transform .2s var(--ease), filter .2s var(--ease), box-shadow .2s var(--ease);
}
.btn-primary-x:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 16px 36px rgba(108,76,246,.5), inset 0 1px 0 rgba(255,255,255,.3);}
.btn-primary-x:active{transform:translateY(1px);}
.btn-ghost-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-btn);
  background:var(--glass);border:1px solid rgba(47,217,200,.35);
  color:var(--brand-2);font-weight:600;font-size:15px;
  backdrop-filter:blur(12px) saturate(140%);
  transition:background .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}
.btn-ghost-x:hover{background:rgba(47,217,200,.12);border-color:rgba(47,217,200,.7);transform:translateY(-2px);}
.btn-ghost-x:active{transform:translateY(1px);}
.btn-link-x{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--text-2);font-size:13.5px;border-bottom:1px solid transparent;
  transition:color .2s var(--ease), border-color .2s var(--ease), text-shadow .2s var(--ease);
}
.btn-link-x:hover{color:var(--brand-2);border-color:rgba(47,217,200,.6);text-shadow:0 0 12px rgba(47,217,200,.5);}
.stat-strip{
  display:flex;flex-wrap:wrap;align-items:center;gap:0;
  border-top:1px solid var(--line);padding-top:20px;
}
.stat-strip .stat{padding-right:26px;margin-right:26px;border-right:1px solid var(--line);}
.stat-strip .stat:last-child{border-right:0;margin-right:0;padding-right:0;}
.stat b{display:block;font-size:22px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--text-1);line-height:1.3;}
.stat i{font-style:normal;font-size:12.5px;color:var(--text-3);}
.hero-visual{position:relative;}
.hero-img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--radius-img);
  border:1px solid var(--line);
  background:linear-gradient(150deg,#141138,#0A0822);
}
.glass-card{
  position:absolute;border-radius:16px;padding:14px 16px;
  background:linear-gradient(160deg, rgba(255,255,255,.10), rgba(255,255,255,.03));
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:0 12px 32px rgba(4,2,24,.5);
}
.glass-card .k{font-size:11.5px;color:var(--text-3);}
.glass-card .v{font-size:15px;font-weight:700;color:var(--text-1);font-variant-numeric:tabular-nums;}
.glass-card.one{left:-18px;bottom:-6px;width:190px;}
.glass-card.two{right:-14px;top:-18px;width:168px;}
.glass-card.two .v{color:var(--brand-2);}

/* 锚点胶囊 */
.anchor-bar{
  position:sticky;top:0;z-index:40;
  margin-top:26px;padding:12px 0;
  background:linear-gradient(180deg, rgba(7,6,26,.94), rgba(7,6,26,.72));
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.anchor-scroll{display:flex;gap:10px;overflow-x:auto;scrollbar-width:none;scroll-snap-type:x proximity;}
.anchor-scroll::-webkit-scrollbar{display:none;}
.anchor-pill{
  flex:0 0 auto;scroll-snap-align:start;
  display:inline-flex;align-items:center;gap:8px;
  height:38px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:var(--glass);
  color:var(--text-2);font-size:13.5px;white-space:nowrap;
  transition:color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease), transform .2s var(--ease);
}
.anchor-pill i{color:var(--brand-2);font-size:13px;}
.anchor-pill:hover{color:var(--text-1);border-color:rgba(108,76,246,.5);background:var(--glass-strong);transform:translateY(-2px);}

/* 通用板块头 */
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
.sec-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3;}
.sec-head p{color:var(--text-2);font-size:14.5px;margin:8px 0 0;max-width:640px;}
.sec-line{width:56px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--brand-1),var(--brand-2));margin-bottom:14px;box-shadow:0 0 14px rgba(108,76,246,.7);}

/* 步骤流 */
.steps{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.step-card{
  position:relative;padding:24px;border-radius:var(--radius-card);
  background:linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.015));
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease), border-color .22s var(--ease), box-shadow .22s var(--ease);
}
.step-card:hover{transform:translateY(-4px);border-color:rgba(108,76,246,.45);box-shadow:var(--shadow-hover);}
.step-card .num{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:50%;
  font-variant-numeric:tabular-nums;font-weight:800;font-size:14px;
  color:var(--brand-2);border:1px solid rgba(47,217,200,.5);
  background:rgba(47,217,200,.07);margin-bottom:14px;
}
.step-card h3{font-size:17.5px;font-weight:700;margin-bottom:8px;}
.step-card p{color:var(--text-2);font-size:14.5px;margin:0;}

/* FAQ */
.faq-group{margin-bottom:34px;}
.faq-group-title{
  display:flex;align-items:center;gap:10px;font-size:13px;color:var(--brand-2);
  letter-spacing:.05em;margin-bottom:14px;
}
.faq-group-title::after{content:"";flex:1;height:1px;background:var(--line);}
.faq-item{
  border-radius:var(--radius-card);border:1px solid var(--line);
  background:linear-gradient(160deg, rgba(255,255,255,.055), rgba(255,255,255,.015));
  margin-bottom:12px;overflow:hidden;
  transition:border-color .22s var(--ease), box-shadow .22s var(--ease);
}
.faq-item:hover{border-color:rgba(108,76,246,.4);}
.faq-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;text-align:left;font-size:16.5px;font-weight:600;color:var(--text-1);
}
.faq-btn .fi{
  flex:0 0 30px;width:30px;height:30px;border-radius:50%;
  display:grid;place-items:center;font-size:12px;color:var(--brand-2);
  border:1px solid rgba(47,217,200,.4);background:rgba(47,217,200,.07);
  transition:transform .24s var(--ease), background .24s var(--ease);
}
.faq-btn[aria-expanded="true"] .fi{transform:rotate(45deg);background:rgba(108,76,246,.25);color:#fff;border-color:rgba(108,76,246,.6);}
.faq-btn[aria-expanded="true"]{color:#fff;}
.faq-body{padding:0 22px 20px;color:var(--text-2);font-size:15px;}
.faq-body ul{margin:12px 0 0;}
.faq-body li{position:relative;padding-left:20px;margin-bottom:8px;}
.faq-body li::before{
  content:"";position:absolute;left:2px;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--brand-2);box-shadow:0 0 10px rgba(47,217,200,.8);
}

/* 术语速查 */
.term-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.term-card{
  padding:20px;border-radius:var(--radius-card);border:1px solid var(--line);
  background:linear-gradient(160deg, rgba(255,255,255,.05), rgba(255,255,255,.012));
  transition:transform .22s var(--ease), border-color .22s var(--ease);
}
.term-card:hover{transform:translateY(-4px);border-color:rgba(47,217,200,.42);}
.term-card .t{
  display:inline-block;font-size:12.5px;color:var(--brand-2);
  border:1px solid rgba(47,217,200,.4);background:rgba(47,217,200,.08);
  border-radius:999px;padding:3px 11px;margin-bottom:12px;font-variant-numeric:tabular-nums;
}
.term-card p{font-size:14.5px;color:var(--text-2);margin:0;}

/* 下一步引导 */
.next-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.next-card{
  display:block;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-panel);
  box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease), border-color .22s var(--ease), box-shadow .22s var(--ease);
}
.next-card:hover{transform:translateY(-5px);border-color:rgba(108,76,246,.5);box-shadow:var(--shadow-hover);}
.next-card .thumb{width:100%;aspect-ratio:16/10;object-fit:cover;background:linear-gradient(150deg,#141138,#0A0822);}
.next-card .body{padding:20px;}
.next-card h3{font-size:17px;margin-bottom:8px;}
.next-card p{font-size:14px;color:var(--text-2);margin:0 0 14px;}
.next-card .go{font-size:13.5px;color:var(--brand-2);display:inline-flex;align-items:center;gap:6px;}
.next-card .go i{transition:transform .22s var(--ease);}
.next-card:hover .go i{transform:translateX(4px);}

/* CTA 横幅 */
.cta-band{
  position:relative;border-radius:24px;padding:40px;overflow:hidden;
  border:1px solid rgba(108,76,246,.35);
  background:
    linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.02)),
    radial-gradient(600px 320px at 90% 10%, rgba(47,217,200,.16), transparent 60%),
    radial-gradient(500px 340px at 4% 100%, rgba(108,76,246,.28), transparent 62%),
    var(--bg-panel);
  box-shadow:var(--shadow-card);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:8px;}
.cta-band p{color:var(--text-2);margin:0;font-size:15px;}

/* 页脚 */
.site-footer{
  position:relative;z-index:1;margin-top:56px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(14,12,36,.7), rgba(7,6,26,.98));
  padding:56px 0 96px;
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.2fr;gap:32px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.foot-about{font-size:13.5px;color:var(--text-2);line-height:1.8;margin:0 0 16px;}
.foot-pills{display:flex;flex-wrap:wrap;gap:8px;}
.pill{
  font-size:12px;color:var(--text-2);border:1px solid var(--line);
  background:var(--glass);border-radius:999px;padding:4px 12px;
  display:inline-flex;align-items:center;gap:6px;
}
.pill i{color:var(--brand-2);font-size:11px;}
.foot-title{font-size:13px;color:var(--text-1);font-weight:700;letter-spacing:.05em;margin-bottom:14px;}
.foot-links{display:flex;flex-direction:column;gap:10px;}
.foot-links a{font-size:13.5px;color:var(--text-2);border-bottom:1px solid transparent;align-self:flex-start;}
.foot-links a:hover{color:var(--text-1);border-color:rgba(47,217,200,.55);}
.foot-contact{font-size:13.5px;color:var(--text-2);line-height:1.9;margin:0;}
.foot-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
}
.foot-bar-copy{display:flex;flex-wrap:wrap;gap:16px;font-size:12.5px;color:var(--text-3);}

/* 底部固定转化条 */
.cta-dock{
  position:fixed;left:var(--side-w);right:0;bottom:0;z-index:80;
  height:56px;display:flex;align-items:center;gap:16px;
  padding:0 24px;
  background:rgba(12,10,32,.86);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-top:1px solid rgba(108,76,246,.45);
  box-shadow:0 -8px 28px rgba(4,2,24,.5);
  transform:translateY(120%);opacity:0;pointer-events:none;
  transition:transform .3s var(--ease), opacity .3s var(--ease);
}
.cta-dock.is-show{transform:translateY(0);opacity:1;pointer-events:auto;}
.cta-dock .dock-text{font-size:14px;color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.cta-dock .dock-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.cta-dock .btn-primary-x{height:38px;padding:0 18px;font-size:14px;}
.cta-dock .btn-ghost-x{height:38px;padding:0 16px;font-size:13.5px;}
.cta-dock .dock-close{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;color:var(--text-3);border:1px solid var(--line);}
.cta-dock .dock-close:hover{color:var(--text-1);border-color:rgba(108,76,246,.5);}

/* 响应式 */
@media (max-width:1399.98px){
  :root{--side-w:232px;}
}
@media (min-width:992px) and (max-width:1199.98px){
  :root{--side-w:76px;}
  .app-side{padding:0 10px 14px;}
  .brand-text,.nav-label,.side-foot-copy{display:none;}
  .side-brand{justify-content:center;padding:0;}
  .nav-item{justify-content:center;padding:0;}
  .nav-item::after{
    content:attr(data-title);position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%) translateX(-6px);
    background:rgba(14,12,36,.96);border:1px solid var(--line);color:var(--text-1);
    font-size:12.5px;padding:5px 10px;border-radius:10px;white-space:nowrap;
    opacity:0;pointer-events:none;transition:opacity .2s var(--ease), transform .2s var(--ease);
  }
  .nav-item:hover::after{opacity:1;transform:translateY(-50%) translateX(0);}
  .btn-glow{padding:0;font-size:0;gap:0;}
  .btn-glow i{font-size:16px;}
}
@media (max-width:991.98px){
  .app-side{width:84vw;max-width:320px;transform:translateX(-102%);padding:0 16px 18px;}
  .app-side.is-open{transform:translateX(0);}
  .brand-text,.nav-label,.side-foot-copy{display:block;}
  .topbar{display:flex;}
  .shell{margin-left:0;padding-top:56px;}
  .shell{padding-top:56px;}
  .cta-dock{left:0;}
  .hero{padding:32px;border-radius:20px;}
  .hero-grid{grid-template-columns:1fr;gap:30px;}
  .hero-visual{order:-1;}
  .glass-card.one{left:8px;bottom:-14px;}
  .glass-card.two{right:8px;top:-14px;}
  .steps{grid-template-columns:1fr 1fr;}
  .term-grid{grid-template-columns:1fr 1fr;}
  .next-grid{grid-template-columns:1fr 1fr;}
  .foot-grid{grid-template-columns:1fr 1fr 1fr;gap:28px;}
  .section{padding:56px 0;}
}
@media (max-width:767.98px){
  .wrap{padding:0 16px;}
  .hero{padding:24px;}
  h1.hero-title{font-size:29px;}
  .stat-strip .stat{padding-right:18px;margin-right:18px;}
  .stat-strip .stat b{font-size:20px;}
  .steps,.term-grid,.next-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;}
  .cta-dock{height:64px;padding:0 16px;}
  .cta-dock .dock-text{display:none;}
  .cta-dock .dock-actions{width:100%;margin-left:0;}
  .cta-dock .btn-primary-x{flex:1 1 auto;min-width:60%;}
  .cta-band{padding:26px;}
  .faq-btn{font-size:15.5px;padding:16px 18px;}
  .faq-body{padding:0 18px 18px;font-size:14.5px;}
  .cta-band .btn-primary-x,.cta-band .btn-ghost-x{width:100%;}
}
@media (max-width:519.98px){
  .foot-grid{grid-template-columns:1fr;}
  .glass-card.two{display:none;}
  .hero-actions .btn-primary-x,.hero-actions .btn-ghost-x{width:100%;}
  .stat-strip{flex-direction:column;align-items:flex-start;gap:14px;}
  .stat-strip .stat{border-right:0;padding-right:0;margin-right:0;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}