/* roulang page: index */
:root{
  --bg:#070A12;
  --bg-2:#0B1020;
  --bg-3:#101731;
  --glass:rgba(255,255,255,.05);
  --glass-2:rgba(255,255,255,.035);
  --line:rgba(53,214,245,.16);
  --line-strong:rgba(53,214,245,.34);
  --cyan:#35D6F5;
  --cyan-hi:#5FE2FF;
  --magenta:#FF4D8D;
  --violet:#6C4BFF;
  --text:#EAF2FF;
  --text-dim:#9AAAC6;
  --text-mute:#67758F;
  --ok:#2FBF8F;
  --warn:#D9A03C;
  --err:#E2615C;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 8px 30px rgba(3,8,22,.55);
  --shadow-lg:0 16px 46px rgba(3,8,22,.65);
  --glow:0 0 22px rgba(53,214,245,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:.24s;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(53,214,245,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(53,214,245,.045) 1px,transparent 1px);
  background-size:48px 48px;
}
body::after{
  content:"";
  position:fixed;
  inset:-30% -30%;
  z-index:0;
  pointer-events:none;
  background:linear-gradient(118deg,transparent 42%,rgba(108,75,255,.07) 50%,transparent 58%);
  animation:scanMove 18s linear infinite;
}
@keyframes scanMove{
  0%{transform:translate3d(-12%,0,0)}
  100%{transform:translate3d(12%,0,0)}
}
img{max-width:100%;display:block}
a{color:var(--cyan);text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-.4px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
::selection{background:rgba(53,214,245,.28);color:#fff}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;position:relative;z-index:1}

/* ---------- 按钮体系 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;letter-spacing:.2px;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),
             background var(--dur) var(--ease),border-color var(--dur) var(--ease),filter var(--dur) var(--ease);
  text-decoration:none;white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(120deg,#35D6F5 0%,#6C4BFF 100%);
  color:#fff;
  box-shadow:0 0 22px rgba(53,214,245,.35);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 32px rgba(53,214,245,.55);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);box-shadow:0 0 14px rgba(53,214,245,.3)}
.btn-ghost{
  background:transparent;color:var(--text);
  border-color:var(--line-strong);
}
.btn-ghost:hover{background:rgba(53,214,245,.12);border-color:var(--cyan);color:var(--cyan-hi)}
.btn-ghost:active{background:rgba(53,214,245,.2)}
.btn-text{
  height:auto;padding:0;background:none;border:none;color:var(--cyan);
  font-weight:600;gap:6px;
}
.btn-text:hover{color:var(--cyan-hi)}
.btn-text:hover .arw{transform:translateX(3px)}
.btn .arw{display:inline-block;transition:transform var(--dur) var(--ease)}
.btn-pill{border-radius:999px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 11px;border-radius:999px;
  font-size:12.5px;line-height:1.7;font-weight:600;letter-spacing:.3px;
  background:rgba(53,214,245,.13);color:var(--cyan-hi);
  border:1px solid rgba(53,214,245,.28);
}
.badge-magenta{background:rgba(255,77,141,.13);color:#FF8FB4;border-color:rgba(255,77,141,.3)}
.badge-muted{background:rgba(255,255,255,.06);color:var(--text-dim);border-color:rgba(255,255,255,.1)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,10,18,.76);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(53,214,245,.12);
  transition:background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--cyan) 22%,var(--magenta) 78%,transparent);
  opacity:0;transition:opacity var(--dur) var(--ease);
}
.site-header.is-scrolled{background:rgba(7,10,18,.95);box-shadow:0 10px 34px rgba(3,8,22,.7)}
.site-header.is-scrolled::after{opacity:.9}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  font-size:13px;font-weight:800;letter-spacing:.5px;color:#04121A;
  background:linear-gradient(135deg,var(--cyan),#9BF2FF);
  box-shadow:0 0 18px rgba(53,214,245,.42);
}
.brand-text{
  font-size:17.5px;font-weight:800;color:var(--text);letter-spacing:-.3px;
  display:flex;align-items:baseline;gap:2px;
}
.brand-text em{font-style:normal;font-size:14px;color:var(--cyan);font-weight:700}
.nav-list{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 15px;
  border-radius:999px;color:var(--text-dim);font-size:15px;font-weight:500;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(53,214,245,.08)}
.nav-link.is-active{
  color:var(--cyan);font-weight:600;
  background:rgba(53,214,245,.12);
  box-shadow:inset 0 0 0 1px rgba(53,214,245,.3),0 0 18px rgba(53,214,245,.16);
}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:-1px;transform:translateX(-50%);
  width:24px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--magenta));
}
.nav-cta{margin-left:18px;height:42px;padding:0 20px;font-size:14.5px}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;
  background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:12px;
  cursor:pointer;padding:0;place-items:center;
}
.nav-toggle span{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--text);
  margin:3px auto;transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.nav-toggle.is-open span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* ---------- 移动抽屉 ---------- */
.nav-drawer{
  position:fixed;inset:0;z-index:80;
  background:rgba(7,10,18,.98);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  display:flex;flex-direction:column;
  padding:22px 22px 30px;
  transform:translateX(100%);visibility:hidden;
  transition:transform .3s var(--ease),visibility .3s var(--ease);
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-close{
  width:44px;height:44px;border-radius:12px;background:rgba(255,255,255,.05);
  border:1px solid var(--line);color:var(--text);font-size:20px;line-height:1;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;gap:8px}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:56px;padding:0 18px;border-radius:14px;
  background:rgba(255,255,255,.04);border:1px solid rgba(53,214,245,.14);
  color:var(--text);font-size:16px;font-weight:600;
}
.drawer-link:hover{border-color:var(--line-strong);background:rgba(53,214,245,.09)}
.drawer-link.is-active{color:var(--cyan);border-color:rgba(53,214,245,.4);box-shadow:0 0 18px rgba(53,214,245,.16)}
.drawer-link i{font-style:normal;color:var(--text-mute);font-size:14px}
.drawer-foot{margin-top:auto;padding-top:26px;display:flex;flex-direction:column;gap:12px}
.drawer-note{font-size:13px;color:var(--text-mute);line-height:1.7}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height:82vh;
  display:flex;align-items:center;
  padding:86px 0 74px;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  overflow:hidden;
  border-bottom:1px solid rgba(53,214,245,.1);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(104deg,rgba(7,10,18,.97) 0%,rgba(7,10,18,.88) 40%,rgba(7,10,18,.6) 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(53,214,245,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(53,214,245,.06) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(90deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(90deg,rgba(0,0,0,.9),transparent 78%);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.08fr .92fr;
  gap:56px;align-items:center;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 15px;border-radius:999px;
  background:rgba(53,214,245,.1);border:1px solid rgba(53,214,245,.28);
  color:var(--cyan-hi);font-size:13px;font-weight:600;letter-spacing:.4px;
  margin-bottom:22px;
}
.hero-eyebrow .dot{
  width:7px;height:7px;border-radius:50%;background:var(--magenta);
  box-shadow:0 0 10px rgba(255,77,141,.9);animation:pulseDot 2.2s infinite;
}
@keyframes pulseDot{
  0%,100%{opacity:1;transform:scale(1)}
  50%{opacity:.45;transform:scale(.82)}
}
.hero h1{
  font-size:clamp(34px,4.6vw,52px);
  line-height:1.2;font-weight:800;letter-spacing:-.5px;
  margin-bottom:20px;
}
.hero h1 span{
  background:linear-gradient(110deg,var(--cyan) 8%,#9BC8FF 48%,var(--magenta) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  font-size:17px;color:var(--text-dim);line-height:1.85;
  max-width:600px;margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:10px 26px;
  font-size:14px;color:var(--text-mute);letter-spacing:.3px;
}
.hero-facts b{color:var(--cyan);font-weight:700;font-size:16px;margin-right:4px}
.hero-scroll{
  position:relative;z-index:2;margin-top:52px;
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;color:var(--text-mute);letter-spacing:.4px;
}
.hero-scroll i{
  display:block;width:1px;height:34px;
  background:linear-gradient(var(--cyan),transparent);
  animation:scrollLine 2.4s var(--ease) infinite;
}
@keyframes scrollLine{
  0%{transform:scaleY(.3);opacity:.4;transform-origin:top}
  50%{transform:scaleY(1);opacity:1;transform-origin:top}
  100%{transform:scaleY(.3);opacity:.4;transform-origin:top}
}

/* ---------- 玻璃信息卡 ---------- */
.glass{
  background:rgba(255,255,255,.05);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid rgba(53,214,245,.2);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
}
.hero-card{padding:22px}
.hero-card-top{
  display:flex;align-items:center;gap:10px;
  padding-bottom:16px;margin-bottom:16px;
  border-bottom:1px solid rgba(53,214,245,.14);
  font-size:13.5px;color:var(--text-dim);
}
.hero-card-top .live{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;
  background:rgba(53,214,245,.12);color:var(--cyan);font-weight:600;font-size:12.5px;
}
.hero-card-top .live::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan);
  box-shadow:0 0 8px var(--cyan);
}
.hero-thumb{
  border-radius:14px;overflow:hidden;margin-bottom:18px;
  border:1px solid rgba(53,214,245,.16);
  aspect-ratio:16/10;background:var(--bg-3);
}
.hero-thumb img{width:100%;height:100%;object-fit:cover}
.hero-metrics{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:18px}
.hero-metric{
  padding:14px 16px;border-radius:14px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(53,214,245,.14);
}
.hero-metric b{
  display:block;font-size:24px;font-weight:800;line-height:1.3;
  background:linear-gradient(120deg,var(--cyan),var(--magenta));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-metric small{font-size:12.5px;color:var(--text-mute);letter-spacing:.3px}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0;position:relative;z-index:1}
.section + .section{border-top:1px solid rgba(53,214,245,.08)}
.section-alt{background:var(--bg-2)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:42px;flex-wrap:wrap;
}
.section-head h2{font-size:clamp(26px,3vw,34px);font-weight:700;line-height:1.28}
.section-flag{
  display:block;font-size:13px;font-weight:700;letter-spacing:1.4px;
  color:var(--cyan);margin-bottom:10px;text-transform:uppercase;
}
.section-desc{font-size:15px;color:var(--text-dim);max-width:560px;margin-top:12px;line-height:1.8}

/* ---------- 品牌主张条 ---------- */
.promise-strip{
  display:grid;
  grid-template-columns:1.35fr .95fr 1.15fr 1fr;
  gap:18px;
}
.promise{
  padding:24px 22px;border-radius:var(--radius);
  background:rgba(255,255,255,.04);
  border:1px solid rgba(53,214,245,.15);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.promise:hover{transform:translateY(-4px);border-color:var(--line-strong);background:rgba(53,214,245,.07)}
.promise-ico{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  margin-bottom:16px;background:rgba(53,214,245,.12);
  border:1px solid rgba(53,214,245,.3);color:var(--cyan);
}
.promise-ico svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.promise h3{font-size:17px;font-weight:600;margin-bottom:8px}
.promise p{font-size:14.5px;color:var(--text-dim);line-height:1.78}

/* ---------- 图文分栏 ---------- */
.split{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:center}
.split h2{font-size:clamp(26px,3vw,34px);line-height:1.3;font-weight:700;margin-bottom:20px}
.split p{font-size:16px;color:var(--text-dim);line-height:1.9;margin-bottom:16px}
.split-more{margin-top:10px}
.split-media{position:relative;min-height:400px}
.media-stack{position:absolute;border-radius:var(--radius);overflow:hidden;border:1px solid rgba(53,214,245,.2);box-shadow:var(--shadow-lg)}
.media-stack img{width:100%;height:100%;object-fit:cover}
.media-a{width:74%;aspect-ratio:4/3;top:0;left:0;z-index:2}
.media-b{width:52%;aspect-ratio:16/10;right:0;bottom:0;z-index:3;border-color:rgba(255,77,141,.3)}
.split-list{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.split-list li{
  position:relative;padding-left:24px;font-size:15px;color:var(--text-dim);
}
.split-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:8px;height:8px;border-radius:3px;
  background:linear-gradient(135deg,var(--cyan),var(--violet));
}

/* ---------- 精选内容卡 ---------- */
.featured{display:grid;grid-template-columns:1.15fr .85fr;gap:24px}
.card-stack{display:flex;flex-direction:column;gap:24px}
.card{
  display:flex;flex-direction:column;
  background:rgba(255,255,255,.045);
  border:1px solid rgba(53,214,245,.16);
  border-radius:var(--radius);
  overflow:hidden;
  color:inherit;text-decoration:none;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(53,214,245,.42);box-shadow:var(--shadow-lg)}
.card-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--bg-3);position:relative}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .34s var(--ease)}
.card:hover .card-thumb img{transform:scale(1.03)}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:19px;font-weight:600;line-height:1.5}
.card-lg .card-body h3{font-size:23px}
.card-body p{font-size:15px;color:var(--text-dim);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  gap:14px;font-size:13px;color:var(--text-mute);letter-spacing:.3px;
  padding-top:14px;border-top:1px solid rgba(53,214,245,.1);
}
.card-meta .arw{color:var(--cyan);font-weight:600;transition:transform var(--dur) var(--ease)}
.card:hover .card-meta .arw{transform:translateX(3px)}

/* ---------- 最新信息列表 ---------- */
.news-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.news-item{
  position:relative;display:grid;grid-template-columns:96px 1fr auto;gap:18px;
  align-items:start;padding:22px 24px;border-radius:var(--radius);
  background:rgba(255,255,255,.04);
  border:1px solid rgba(53,214,245,.14);
  color:inherit;text-decoration:none;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.news-item::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:0 3px 3px 0;
  background:linear-gradient(var(--cyan),var(--violet));
  opacity:.45;transition:opacity var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.news-item:hover{transform:translateX(4px);background:rgba(53,214,245,.08);border-color:rgba(53,214,245,.36)}
.news-item:hover::before{opacity:1;box-shadow:0 0 12px rgba(53,214,245,.6)}
.news-date{
  font-size:12.5px;color:var(--text-mute);letter-spacing:.6px;
  padding-top:4px;line-height:1.6;
}
.news-body{display:flex;flex-direction:column;gap:8px;min-width:0}
.news-body h3{
  font-size:17px;font-weight:600;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  font-size:14.5px;color:var(--text-dim);line-height:1.78;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-arrow{
  align-self:center;font-size:13px;color:var(--cyan);font-weight:600;white-space:nowrap;
  transition:transform var(--dur) var(--ease);
}
.news-item:hover .news-arrow{transform:translateX(3px)}
.badge-row{display:flex;flex-wrap:wrap;gap:8px}

/* ---------- 空态 / 骨架 ---------- */
.empty-state{
  padding:60px 26px;text-align:center;border-radius:var(--radius-lg);
  background:rgba(255,255,255,.03);
  border:1px dashed rgba(53,214,245,.24);
}
.empty-ico{
  width:56px;height:56px;margin:0 auto 18px;border-radius:16px;
  display:grid;place-items:center;
  background:rgba(53,214,245,.1);border:1px solid rgba(53,214,245,.28);
  color:var(--cyan);font-size:22px;
}
.empty-state p{color:var(--text-dim);font-size:15.5px;margin-bottom:20px}
.skeleton{
  height:14px;border-radius:8px;
  background:linear-gradient(90deg,rgba(255,255,255,.05),rgba(53,214,245,.16),rgba(255,255,255,.05));
  background-size:220% 100%;animation:shimmer 1.6s linear infinite;
}
@keyframes shimmer{
  0%{background-position:120% 0}
  100%{background-position:-120% 0}
}

/* ---------- 数据带 / 徽章墙 ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;background:rgba(53,214,245,.16);
  border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid rgba(53,214,245,.16);
  margin-bottom:34px;
}
.stat{background:var(--bg-2);padding:32px 26px}
.stat b{
  display:block;font-size:34px;font-weight:800;line-height:1.2;letter-spacing:-.5px;
  background:linear-gradient(120deg,var(--cyan),var(--magenta));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat span{font-size:14px;color:var(--text-dim);display:block;margin-top:8px}
.logo-wall{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.logo-chip{
  padding:18px 12px;text-align:center;border-radius:14px;
  background:rgba(255,255,255,.03);
  border:1px solid rgba(53,214,245,.12);
  color:var(--text-dim);font-size:13.5px;letter-spacing:.3px;
  filter:grayscale(1);opacity:.62;
  transition:filter var(--dur) var(--ease),opacity var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.logo-chip:hover{filter:none;opacity:1;border-color:var(--line-strong);transform:translateY(-3px);color:var(--text)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{
  border-radius:var(--radius);
  background:rgba(255,255,255,.04);
  border:1px solid rgba(53,214,245,.14);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.faq-item.is-open{border-color:rgba(53,214,245,.4);box-shadow:inset 3px 0 0 var(--cyan),0 0 22px rgba(53,214,245,.08)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;background:none;border:none;cursor:pointer;text-align:left;
  color:var(--text);font-size:17px;font-weight:600;line-height:1.6;min-height:44px;
}
.faq-q:hover{color:var(--cyan-hi)}
.faq-q .chev{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(53,214,245,.12);border:1px solid rgba(53,214,245,.3);
  color:var(--cyan);font-size:12px;
  transition:transform var(--dur) var(--ease);
}
.faq-item.is-open .chev{transform:rotate(180deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s var(--ease);
}
.faq-item.is-open .faq-a{max-height:340px}
.faq-a-inner{
  padding:0 24px 22px;font-size:15.5px;color:var(--text-dim);line-height:1.85;
}

/* ---------- CTA 横幅 ---------- */
.cta-band{
  position:relative;border-radius:var(--radius-lg);
  padding:52px 48px;
  background:rgba(255,255,255,.045);
  border:1px solid rgba(53,214,245,.22);
  overflow:hidden;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,transparent 34%,rgba(255,77,141,.16) 52%,rgba(53,214,245,.16) 68%,transparent 88%);
}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{font-size:clamp(24px,2.6vw,31px);font-weight:700;line-height:1.34;margin-bottom:12px}
.cta-band p{font-size:15.5px;color:var(--text-dim);line-height:1.85}
.sub-form{display:flex;gap:12px;flex-wrap:wrap}
.sub-form .field{flex:1 1 240px;min-width:0}
.field label{display:block;font-size:13px;color:var(--text-dim);margin-bottom:8px;letter-spacing:.3px}
.field input{
  width:100%;height:46px;padding:0 16px;border-radius:var(--radius-sm);
  background:var(--bg-3);border:1px solid rgba(53,214,245,.2);
  color:var(--text);font-size:15px;font-family:inherit;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.field input::placeholder{color:var(--text-mute)}
.field input:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(53,214,245,.16)}
.field.is-error input{border-color:var(--err);box-shadow:0 0 0 3px rgba(226,97,92,.14)}
.field-msg{font-size:12.5px;margin-top:7px;color:var(--text-mute);line-height:1.6}
.field.is-error .field-msg{color:var(--err)}
.field.is-ok .field-msg{color:var(--ok)}
.sub-form .btn{align-self:flex-end}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;z-index:1;
  background:var(--bg-2);
  border-top:1px solid transparent;
  padding:64px 0 0;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--cyan) 25%,var(--magenta) 75%,transparent);
  opacity:.65;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-text{font-size:17px}
.footer-about{font-size:14.5px;color:var(--text-dim);line-height:1.85;max-width:320px}
.footer-title{font-size:15px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.2px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14.5px;color:var(--text-dim);transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);display:inline-block}
.footer-links a:hover{color:var(--cyan);transform:translateX(3px)}
.footer-contact{font-size:14.5px;color:var(--text-dim);line-height:1.9}
.footer-contact b{color:var(--text);font-weight:600}
.footer-bottom{
  margin-top:52px;padding:22px 0;
  border-top:1px solid rgba(53,214,245,.1);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:var(--text-mute);letter-spacing:.3px;
}
.footer-bottom .social{display:flex;gap:18px}
.footer-bottom .social a{color:var(--text-mute);transition:color var(--dur) var(--ease)}
.footer-bottom .social a:hover{color:var(--cyan)}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .hero-inner{gap:44px}
  .split{gap:48px}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .section{padding:64px 0}
  .hero{min-height:auto;padding:72px 0 64px}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-sub{max-width:none}
  .promise-strip{grid-template-columns:1fr 1fr}
  .split{grid-template-columns:1fr;gap:40px}
  .split-media{min-height:340px}
  .featured{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .logo-wall{grid-template-columns:repeat(3,1fr)}
  .cta-band{grid-template-columns:1fr;gap:30px;padding:42px 34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:768px){
  .nav-list,.nav-cta{display:none}
  .nav-toggle{display:grid}
  .nav-inner{height:64px}
  .news-list{grid-template-columns:1fr}
  .news-item{grid-template-columns:1fr auto;gap:12px}
  .news-date{grid-column:1 / -1;padding-top:0}
  .section-head{margin-bottom:30px}
  .promise-strip{grid-template-columns:1fr}
  .split-media{min-height:290px}
  .media-a{width:78%}
  .media-b{width:56%}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-about{max-width:none}
  .section{padding:56px 0}
  .cta-band{padding:34px 24px}
}
@media (max-width:560px){
  .container{padding:0 18px}
  body{font-size:15.5px}
  .hero{padding:56px 0 52px}
  .hero h1{font-size:31px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .hero-metrics{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .logo-wall{grid-template-columns:1fr 1fr}
  .stat{padding:24px 20px}
  .stat b{font-size:28px}
  .split-media{min-height:250px}
  .media-stack{position:relative;width:100%;inset:auto}
  .media-a{width:100%;max-width:none}
  .media-b{display:none}
  .card-body h3,.card-lg .card-body h3{font-size:18.5px}
  .faq-q{font-size:16px;padding:17px 18px}
  .faq-a-inner{padding:0 18px 18px}
  .sub-form .btn{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:420px){
  .hero h1{font-size:28px}
  .brand-text{font-size:16px}
  .btn{width:100%}
  .nav-toggle,.drawer-close{width:44px}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: article */
:root{
  --bg:#070A12;
  --bg-2:#0B1020;
  --bg-3:#101731;
  --glass:rgba(255,255,255,.05);
  --glass-2:rgba(255,255,255,.08);
  --cyan:#35D6F5;
  --cyan-soft:rgba(53,214,245,.16);
  --cyan-line:rgba(53,214,245,.26);
  --magenta:#FF4D8D;
  --violet:#6C4BFF;
  --text:#EAF2FF;
  --text-body:#D5E1F5;
  --text-dim:#9AAAC6;
  --text-mute:#6B7A96;
  --ok:#3FD8A4;
  --warn:#E8B24A;
  --err:#F2685C;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 8px 30px rgba(3,8,22,.55);
  --shadow-lg:0 20px 60px rgba(3,8,22,.65);
  --glow:0 0 22px rgba(53,214,245,.45);
  --glow-soft:0 0 16px rgba(53,214,245,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:240ms;
  --maxw:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    linear-gradient(rgba(53,214,245,.032) 1px,transparent 1px),
    linear-gradient(90deg,rgba(53,214,245,.032) 1px,transparent 1px),
    radial-gradient(circle at 12% -8%,rgba(108,75,255,.22),transparent 55%),
    radial-gradient(circle at 92% 2%,rgba(255,77,141,.12),transparent 52%);
  background-size:32px 32px,32px 32px,100% 100%,100% 100%;
  background-attachment:fixed;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--cyan);text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:#6FE4FF}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;color:var(--text);letter-spacing:-.4px;line-height:1.25}
p{margin:0}
::selection{background:rgba(53,214,245,.3);color:#fff}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,10,18,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(53,214,245,.1);
  transition:background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,10,18,.94);
  box-shadow:0 10px 30px rgba(3,8,22,.6);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,214,245,.75),rgba(255,77,141,.6),transparent);
  opacity:.35;transition:opacity var(--dur) var(--ease);
}
.site-header.is-scrolled::after{opacity:1}
.header-inner{display:flex;align-items:center;gap:28px;height:74px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--text)}
.brand-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  font-weight:800;font-size:15px;letter-spacing:.5px;color:#02131B;
  background:linear-gradient(135deg,var(--cyan),var(--violet));
  box-shadow:var(--glow-soft);
}
.brand-text{font-size:18px;font-weight:800;letter-spacing:-.3px;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--cyan);margin-left:2px}
.nav-list{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:0 16px;border-radius:999px;
  font-size:15px;color:var(--text-dim);font-weight:500;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(53,214,245,.08)}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:8px;height:2px;width:0;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--magenta));
  transform:translateX(-50%);transition:width var(--dur) var(--ease);
  box-shadow:0 0 12px rgba(53,214,245,.7);
}
.nav-link:hover::after{width:18px}
.nav-link.is-active{
  color:var(--cyan);font-weight:700;
  background:rgba(53,214,245,.1);
}
.nav-link.is-active::after{width:24px}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:12px;
  font-size:15px;font-weight:700;letter-spacing:.2px;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),
             background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.btn-sm{min-height:42px;padding:0 20px;font-size:14px}
.btn-primary{
  color:#04141C;
  background:linear-gradient(135deg,var(--cyan),var(--violet));
  box-shadow:0 0 22px rgba(53,214,245,.4);
  border-radius:999px;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 30px rgba(53,214,245,.6);color:#04141C}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 12px rgba(53,214,245,.45);filter:brightness(.94)}
.btn-ghost{
  color:var(--cyan);background:transparent;border:1px solid var(--cyan-line);
  border-radius:999px;
}
.btn-ghost:hover{background:rgba(53,214,245,.12);color:#7FE7FF;transform:translateY(-2px)}
.btn-ghost:active{background:rgba(53,214,245,.18);transform:translateY(0)}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;color:var(--cyan);
  font-size:15px;font-weight:600;padding:0;min-height:44px;
}
.btn-text i{transition:transform var(--dur) var(--ease)}
.btn-text:hover i{transform:translateX(4px)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--cyan-line);background:rgba(53,214,245,.06);
  color:var(--cyan);align-items:center;justify-content:center;font-size:18px;
}
.mobile-drawer{
  display:none;position:fixed;inset:74px 0 0 0;z-index:79;
  background:rgba(7,10,18,.98);backdrop-filter:blur(16px);
  padding:26px 24px 40px;border-top:1px solid rgba(53,214,245,.12);
  overflow-y:auto;
}
.mobile-drawer.is-open{display:block;animation:drawerIn .24s var(--ease)}
@keyframes drawerIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
.drawer-title{font-size:12px;letter-spacing:2px;color:var(--text-mute);margin-bottom:12px;text-transform:uppercase}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:54px;padding:0 4px;font-size:17px;font-weight:600;color:var(--text);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.drawer-link i{color:var(--cyan);font-size:14px}
.drawer-link.is-active{color:var(--cyan)}
.drawer-cta{margin-top:26px;width:100%}
body.nav-locked{overflow:hidden}

/* ============ 阅读进度 ============ */
.read-progress{
  position:fixed;top:0;left:0;height:2px;width:0;z-index:99;
  background:linear-gradient(90deg,var(--cyan),var(--magenta));
  box-shadow:0 0 12px rgba(53,214,245,.8);
  transition:width .12s linear;
}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;overflow:hidden;
  padding:64px 0 52px;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid rgba(53,214,245,.12);
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,10,18,.86),rgba(7,10,18,.93) 55%,rgba(7,10,18,.98));
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(53,214,245,.08),transparent 42%,rgba(255,77,141,.08));
  opacity:.7;pointer-events:none;
}
.article-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  font-size:14px;color:var(--text-dim);margin-bottom:22px;
}
.breadcrumb a{color:var(--text-dim)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb i{font-size:10px;color:var(--cyan);opacity:.8}
.breadcrumb .current{
  color:var(--text-mute);
  max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;
  color:var(--cyan);background:rgba(53,214,245,.12);
  border:1px solid var(--cyan-line);margin-bottom:18px;
}
.hero-tag i{font-size:11px}
.article-hero h1{
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.22;letter-spacing:-.6px;max-width:900px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  margin-top:22px;font-size:13.5px;color:var(--text-dim);letter-spacing:.3px;
}
.meta-row span{display:inline-flex;align-items:center;gap:8px}
.meta-row i{color:var(--cyan);font-size:13px;opacity:.9}
.meta-pill{
  padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:600;
  color:var(--magenta);background:rgba(255,77,141,.12);
  border:1px solid rgba(255,77,141,.28);
  max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ============ 文章布局 ============ */
.article-section{padding:64px 0 88px}
.article-layout{max-width:820px;margin:0 auto}
.article-surface{
  background:var(--glass);
  border:1px solid var(--cyan-line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  padding:48px 56px 44px;
}
.article-body{font-size:17px;line-height:1.9;color:var(--text-body)}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 22px}
.article-body > p:first-of-type{
  font-size:18.5px;line-height:1.85;color:var(--text);font-weight:500;
}
.article-body h2{
  font-size:26px;font-weight:700;color:var(--text);
  margin:46px 0 18px;padding-left:16px;position:relative;
  border-left:3px solid var(--cyan);line-height:1.35;
}
.article-body h3{
  font-size:20px;font-weight:600;color:var(--text);
  margin:34px 0 14px;line-height:1.4;
}
.article-body h4{font-size:17.5px;font-weight:600;color:var(--text);margin:26px 0 12px}
.article-body a{
  color:var(--cyan);font-weight:500;
  border-bottom:1px solid rgba(53,214,245,.4);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.article-body a:hover{border-bottom-color:var(--magenta);color:#7FE7FF}
.article-body strong{color:var(--text);font-weight:700}
.article-body ul,.article-body ol{margin:0 0 24px;padding-left:4px}
.article-body ul li,.article-body ol li{
  position:relative;padding-left:26px;margin-bottom:12px;color:var(--text-body);
}
.article-body ul li::before{
  content:"";position:absolute;left:6px;top:12px;
  width:7px;height:7px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 10px rgba(53,214,245,.7);
}
.article-body ol{counter-reset:pgcount}
.article-body ol li{counter-increment:pgcount}
.article-body ol li::before{
  content:counter(pgcount);
  position:absolute;left:0;top:2px;
  width:20px;height:20px;border-radius:6px;
  display:grid;place-items:center;
  font-size:12px;font-weight:700;color:var(--cyan);
  background:rgba(53,214,245,.12);border:1px solid var(--cyan-line);
}
.article-body blockquote{
  margin:28px 0;padding:20px 24px;
  background:rgba(53,214,245,.07);
  border-left:3px solid var(--cyan);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--text);font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  border-radius:14px;margin:26px auto;width:100%;height:auto;
  border:1px solid rgba(53,214,245,.18);
  box-shadow:var(--shadow);
}
.article-body figure{margin:28px 0}
.article-body figcaption{
  text-align:center;font-size:13px;color:var(--text-mute);margin-top:10px;
}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;
  border:1px solid rgba(53,214,245,.2);border-radius:var(--radius-sm);overflow:hidden;
}
.article-body th,.article-body td{
  padding:12px 14px;text-align:left;border-bottom:1px solid rgba(255,255,255,.07);
}
.article-body th{
  background:rgba(53,214,245,.1);color:var(--text);font-weight:700;font-size:14px;
  letter-spacing:.4px;
}
.article-body tr:last-child td{border-bottom:0}
.article-body code{
  background:var(--bg-3);padding:2px 7px;border-radius:6px;
  font-size:14.5px;color:var(--cyan);
}
.article-body hr{
  border:0;height:1px;margin:38px 0;
  background:linear-gradient(90deg,transparent,rgba(53,214,245,.45),transparent);
}

/* ============ 标签与分享 ============ */
.article-foot{
  margin-top:36px;padding-top:28px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;
}
.tag-group{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 15px;border-radius:999px;font-size:13px;
  color:var(--text-dim);background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.1);
  transition:all var(--dur) var(--ease);
}
.tag:hover{color:var(--cyan);border-color:var(--cyan-line);background:rgba(53,214,245,.1)}
.share-group{display:flex;align-items:center;gap:10px}
.share-group span{font-size:13px;color:var(--text-mute)}
.icon-btn{
  width:42px;height:42px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-dim);background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.1);
  transition:all var(--dur) var(--ease);
}
.icon-btn:hover{color:var(--cyan);border-color:var(--cyan-line);background:rgba(53,214,245,.12);transform:translateY(-2px)}
.icon-btn:active{transform:translateY(0)}

/* ============ 空态 ============ */
.empty-state{
  text-align:center;padding:70px 24px;
  background:var(--glass);border:1px dashed var(--cyan-line);
  border-radius:var(--radius-lg);
}
.empty-state .empty-icon{
  width:72px;height:72px;margin:0 auto 22px;border-radius:20px;
  display:grid;place-items:center;font-size:28px;color:var(--cyan);
  background:rgba(53,214,245,.1);border:1px solid var(--cyan-line);
}
.empty-state h2{font-size:23px;margin-bottom:12px}
.empty-state p{color:var(--text-dim);margin-bottom:26px;font-size:15.5px}

/* ============ 相关推荐 ============ */
.related-section{padding:0 0 88px}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:30px;flex-wrap:wrap;
}
.section-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:700}
.section-head .sub{font-size:14.5px;color:var(--text-dim);margin-top:8px}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;
  background:var(--glass);border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--cyan-line);box-shadow:var(--shadow-lg)}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-3)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--dur) var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,10,18,0),rgba(7,10,18,.55));
}
.badge{
  position:absolute;top:14px;left:14px;z-index:2;
  padding:5px 12px;border-radius:999px;font-size:12px;font-weight:600;
  color:var(--cyan);background:rgba(7,10,18,.72);
  border:1px solid var(--cyan-line);backdrop-filter:blur(6px);
}
.badge.is-magenta{color:var(--magenta);border-color:rgba(255,77,141,.3)}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.card-body h3{
  font-size:18px;font-weight:700;line-height:1.45;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-body h3 a{color:var(--text)}
.card-body h3 a:hover{color:var(--cyan)}
.card-body p{
  font-size:14.5px;line-height:1.75;color:var(--text-dim);margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--text-mute);letter-spacing:.3px;
}
.card-meta i{color:var(--cyan);font-size:11px;margin-right:6px}

/* ============ CTA ============ */
.cta-section{padding:0 0 96px}
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid var(--cyan-line);
  background:linear-gradient(120deg,rgba(16,23,49,.94),rgba(11,16,32,.96));
  box-shadow:var(--shadow-lg);
  padding:46px 52px;
  display:grid;grid-template-columns:1.2fr .9fr;gap:36px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;inset:-40% -10%;
  background:linear-gradient(115deg,rgba(255,77,141,.16),transparent 45%,rgba(53,214,245,.18));
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{font-size:clamp(22px,2.5vw,29px);margin-bottom:12px}
.cta-band p{color:var(--text-dim);font-size:15.5px;line-height:1.8}
.subscribe-form{display:flex;gap:12px;flex-wrap:wrap}
.subscribe-form input{
  flex:1 1 220px;min-height:50px;padding:0 18px;
  background:rgba(7,10,18,.7);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius-sm);color:var(--text);font-size:15px;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.subscribe-form input::placeholder{color:var(--text-mute)}
.subscribe-form input:focus{
  outline:none;border-color:var(--cyan);
  box-shadow:0 0 0 3px rgba(53,214,245,.2);
}
.form-hint{
  width:100%;font-size:13.5px;color:var(--ok);margin-top:4px;min-height:20px;
}
.form-hint.is-error{color:var(--err)}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:linear-gradient(180deg,rgba(11,16,32,.85),rgba(7,10,18,.98));
  padding:66px 0 30px;margin-top:20px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,214,245,.7),rgba(255,77,141,.6),transparent);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.07);
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand .brand-mark{width:36px;height:36px;border-radius:10px;font-size:13px}
.footer-brand .brand-text{font-size:17px}
.footer-about{font-size:14.5px;line-height:1.85;color:var(--text-dim);max-width:340px}
.footer-title{
  font-size:15px;font-weight:700;color:var(--text);
  margin-bottom:18px;letter-spacing:.3px;
}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14.5px;color:var(--text-dim)}
.footer-links a:hover{color:var(--cyan)}
.footer-contact{font-size:14.5px;line-height:2;color:var(--text-dim)}
.footer-contact b{color:var(--cyan);font-weight:600}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding-top:24px;font-size:13px;color:var(--text-mute);
}
.footer-bottom .social{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom .social a{color:var(--text-mute);font-size:13px}
.footer-bottom .social a:hover{color:var(--cyan)}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .container{padding:0 24px}
  .nav-list{gap:2px}
  .nav-link{padding:0 12px;font-size:14.5px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{grid-template-columns:1fr;padding:38px 34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:768px){
  body{font-size:16px}
  .container{padding:0 18px}
  .nav-list,.header-actions .btn{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{height:66px}
  .mobile-drawer{inset:66px 0 0 0}
  .article-hero{padding:44px 0 38px}
  .article-section{padding:44px 0 60px}
  .article-surface{padding:30px 22px 28px;border-radius:var(--radius)}
  .article-body{font-size:16.5px}
  .article-body h2{font-size:22px;margin-top:36px}
  .article-body h3{font-size:18.5px}
  .article-body > p:first-of-type{font-size:17.5px}
  .card-grid{grid-template-columns:1fr;gap:18px}
  .related-section{padding-bottom:60px}
  .cta-section{padding-bottom:64px}
  .cta-band{padding:32px 24px}
  .article-foot{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:32px}
  .site-footer{padding:48px 0 26px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:520px){
  .brand-text{font-size:16px}
  .hero-tag{font-size:12px}
  .meta-row{gap:10px 16px;font-size:13px}
  .breadcrumb .current{max-width:200px}
  .btn{width:100%}
  .btn-sm{width:auto}
  .subscribe-form input{flex:1 1 100%}
  .drawer-cta{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .card:hover{transform:none}
  .btn:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --bg:#070A12;
  --bg-2:#0B1020;
  --bg-3:#101731;
  --glass:rgba(255,255,255,.05);
  --glass-2:rgba(16,23,49,.72);
  --line:rgba(53,214,245,.18);
  --line-2:rgba(53,214,245,.42);
  --cyan:#35D6F5;
  --cyan-deep:#1B9EBC;
  --magenta:#FF4D8D;
  --violet:#6C4BFF;
  --text:#EAF2FF;
  --dim:#9AAAC6;
  --mute:#6B7A99;
  --ok:#22C08A;
  --warn:#E0A93F;
  --err:#E5606B;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow:0 8px 30px rgba(3,8,22,.55);
  --glow:0 0 22px rgba(53,214,245,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:.24s;
  --maxw:1240px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(53,214,245,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(53,214,245,.045) 1px,transparent 1px);
  background-size:44px 44px;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:linear-gradient(115deg,transparent 38%,rgba(108,75,255,.06) 50%,transparent 62%);
}
img{max-width:100%;display:block;}
a{color:var(--cyan);text-decoration:none;transition:color var(--dur) var(--ease);}
a:hover{color:#7BE6FF;}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.4px;color:#fff;}
h1{font-size:clamp(34px,4.2vw,52px);font-weight:800;}
h2{font-size:clamp(26px,3vw,34px);font-weight:700;}
h3{font-size:21px;font-weight:600;}
h4{font-size:17px;font-weight:600;}
p{margin:0 0 14px;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 32px;
  position:relative;
  z-index:1;
}

/* ============ HEADER ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(7,10,18,.74);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--cyan),var(--magenta),transparent);
  opacity:0;
  transition:opacity var(--dur) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,10,18,.94);
  box-shadow:0 10px 30px rgba(3,8,22,.6);
}
.site-header.is-scrolled::after{opacity:.85;}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:74px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-weight:800;
  font-size:17px;
  letter-spacing:.2px;
  white-space:nowrap;
}
.brand:hover{color:#fff;}
.brand-mark{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(135deg,var(--cyan),var(--violet));
  color:#04121A;
  font-size:13px;
  font-weight:900;
  letter-spacing:.5px;
  box-shadow:0 0 16px rgba(53,214,245,.4);
}
.brand-text em{font-style:normal;color:var(--cyan);margin-left:2px;}

.nav-list{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 15px;
  border-radius:var(--r-pill);
  color:var(--dim);
  font-size:15px;
  font-weight:500;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-link:hover{color:#fff;background:rgba(53,214,245,.09);}
.nav-link.is-active{
  color:#fff;
  font-weight:700;
  background:rgba(53,214,245,.12);
  box-shadow:inset 0 0 0 1px var(--line-2),0 0 16px rgba(53,214,245,.22);
}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:16px;right:16px;bottom:4px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--magenta));
  animation:navLine .4s var(--ease);
}
@keyframes navLine{from{transform:scaleX(.2);opacity:.2;}to{transform:scaleX(1);opacity:1;}}

.header-actions{display:flex;align-items:center;gap:14px;margin-left:24px;}
.menu-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--text);
  cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.menu-toggle:hover{border-color:var(--line-2);color:var(--cyan);}

.drawer{
  display:none;
  position:fixed;
  inset:74px 0 0 0;
  z-index:70;
  background:rgba(7,10,18,.98);
  backdrop-filter:blur(16px);
  padding:22px 18px 34px;
  overflow-y:auto;
}
.drawer.open{display:block;}
.drawer-group-title{
  font-size:12px;
  letter-spacing:1.4px;
  color:var(--mute);
  text-transform:uppercase;
  margin:6px 0 10px;
}
.drawer-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:52px;
  padding:0 16px;
  margin-bottom:10px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:var(--glass);
  color:var(--text);
  font-size:16px;
}
.drawer-link.is-active{
  color:#fff;
  border-color:var(--line-2);
  background:rgba(53,214,245,.12);
  box-shadow:0 0 16px rgba(53,214,245,.2);
}
.drawer-link i{color:var(--cyan);font-size:13px;}
.drawer-cta{margin-top:18px;display:block;}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  min-height:46px;
  padding:0 22px;
  border:1px solid transparent;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  white-space:nowrap;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn-primary{
  background:linear-gradient(120deg,var(--cyan),var(--violet));
  color:#fff;
  box-shadow:0 8px 24px rgba(53,214,245,.26);
}
.btn-primary:hover{
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 12px 30px rgba(53,214,245,.42),var(--glow);
}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}
.btn-outline{
  background:transparent;
  border-color:var(--line-2);
  color:var(--cyan);
}
.btn-outline:hover{
  background:rgba(53,214,245,.12);
  color:#8AEBFF;
  transform:translateY(-2px);
}
.btn-text{
  background:none;
  border:none;
  color:var(--cyan);
  padding:0;
  min-height:auto;
  font-weight:600;
}
.btn-text i{transition:transform var(--dur) var(--ease);}
.btn-text:hover i{transform:translateX(4px);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn:disabled{opacity:.4;cursor:not-allowed;box-shadow:none;transform:none;}

/* ============ HERO ============ */
.page-hero{
  position:relative;
  padding:96px 0 84px;
  background-image:linear-gradient(100deg,rgba(7,10,18,.94) 12%,rgba(7,10,18,.72) 58%,rgba(11,16,32,.86)),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  width:520px;height:520px;
  right:-140px;top:-160px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,77,141,.2),transparent 66%);
  pointer-events:none;
}
.crumb{
  display:flex;
  align-items:center;
  gap:9px;
  font-size:13.5px;
  color:var(--dim);
  margin-bottom:22px;
}
.crumb a{color:var(--dim);}
.crumb a:hover{color:var(--cyan);}
.crumb i{color:var(--cyan);font-size:10px;}
.crumb .current{color:var(--text);max-width:46%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:end;
}
.hero-copy h1{margin-bottom:18px;}
.hero-copy h1 span{
  background:linear-gradient(100deg,var(--cyan),var(--magenta));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-lead{
  font-size:17px;
  color:var(--dim);
  max-width:640px;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  font-size:13px;
  color:var(--cyan);
  background:rgba(53,214,245,.1);
  border:1px solid var(--line);
}
.tag.magenta{color:#FF93B8;background:rgba(255,77,141,.1);border-color:rgba(255,77,141,.28);}

.hero-panel{
  background:var(--glass-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:24px;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow);
}
.hero-panel h3{font-size:16px;color:var(--dim);font-weight:600;letter-spacing:.4px;margin-bottom:16px;}
.panel-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:12px 0;
  border-bottom:1px dashed rgba(53,214,245,.15);
  font-size:14.5px;
}
.panel-row:last-child{border-bottom:none;}
.panel-row span{color:var(--dim);}
.panel-row b{color:var(--text);font-weight:700;}
.panel-row b em{font-style:normal;color:var(--magenta);}
.status-dot{
  display:inline-block;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--ok);
  box-shadow:0 0 10px rgba(34,192,138,.8);
  margin-right:7px;
  vertical-align:middle;
}

/* ============ SECTION ============ */
.section{padding:90px 0;position:relative;}
.section.alt{background:var(--bg-2);border-top:1px solid rgba(53,214,245,.1);border-bottom:1px solid rgba(53,214,245,.1);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:38px;
}
.section-head p{color:var(--dim);margin:10px 0 0;max-width:640px;font-size:15.5px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  letter-spacing:1.6px;
  text-transform:uppercase;
  color:var(--cyan);
  margin-bottom:12px;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--magenta));
}

/* ============ LAYOUT BLOCKS ============ */
.split{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:44px;
  align-items:start;
}
.split.reverse{grid-template-columns:5fr 7fr;}
.figure-card{
  background:var(--glass-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.figure-card:hover{transform:translateY(-4px);border-color:var(--line-2);}
.figure-card img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.figure-card figcaption{
  padding:16px 20px;
  font-size:13.5px;
  color:var(--dim);
  border-top:1px solid var(--line);
}
.lead-text{font-size:17.5px;color:var(--text);}
.body-text{color:var(--dim);}

.point-list{margin-top:22px;display:grid;gap:14px;}
.point-item{
  display:flex;
  gap:14px;
  padding:16px 18px;
  border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--line);
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.point-item:hover{border-color:var(--line-2);background:rgba(53,214,245,.07);transform:translateX(4px);}
.point-item i{
  flex:none;
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:10px;
  background:rgba(53,214,245,.12);
  color:var(--cyan);
  font-size:14px;
}
.point-item h4{margin-bottom:4px;font-size:16px;}
.point-item p{margin:0;font-size:14.5px;color:var(--dim);line-height:1.75;}

/* ============ RANK LIST ============ */
.rank-list{display:grid;gap:16px;}
.rank-item{
  display:grid;
  grid-template-columns:64px 1fr 260px 40px;
  gap:22px;
  align-items:center;
  padding:22px 24px;
  border-radius:var(--r-md);
  background:var(--glass-2);
  border:1px solid var(--line);
  transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.rank-item:hover{
  transform:translateY(-3px);
  border-color:var(--line-2);
  box-shadow:var(--shadow),0 0 0 1px rgba(53,214,245,.1);
}
.rank-no{
  font-size:26px;
  font-weight:800;
  letter-spacing:-1px;
  color:transparent;
  background:linear-gradient(140deg,var(--cyan),var(--violet));
  -webkit-background-clip:text;
  background-clip:text;
}
.rank-no.top{background:linear-gradient(140deg,var(--magenta),var(--cyan));-webkit-background-clip:text;background-clip:text;}
.rank-main h3{font-size:18px;margin-bottom:6px;}
.rank-main p{margin:0;font-size:14px;color:var(--dim);line-height:1.7;}
.rank-meta{display:grid;gap:6px;font-size:13.5px;color:var(--dim);}
.rank-meta b{color:var(--text);font-weight:600;}
.rank-arrow{color:var(--cyan);text-align:right;font-size:15px;}

.data-band{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  margin-top:44px;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:var(--glass-2);
  overflow:hidden;
}
.data-cell{
  padding:26px 24px;
  border-right:1px solid var(--line);
}
.data-cell:last-child{border-right:none;}
.data-cell b{
  display:block;
  font-size:32px;
  font-weight:800;
  letter-spacing:-1px;
  color:var(--cyan);
  margin-bottom:6px;
}
.data-cell b em{font-style:normal;color:var(--magenta);}
.data-cell span{font-size:14px;color:var(--dim);}

/* ============ SCENES ============ */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}
.scene-card{
  padding:26px 24px;
  border-radius:var(--r-lg);
  background:var(--glass-2);
  border:1px solid var(--line);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.scene-card:nth-child(2){margin-top:26px;}
.scene-card:hover{transform:translateY(-4px);border-color:var(--line-2);}
.scene-card i{
  font-size:18px;
  color:var(--cyan);
  display:grid;
  place-items:center;
  width:44px;height:44px;
  border-radius:12px;
  background:rgba(53,214,245,.1);
  border:1px solid var(--line);
  margin-bottom:16px;
}
.scene-card h3{font-size:18px;margin-bottom:10px;}
.scene-card p{color:var(--dim);font-size:14.5px;margin:0;}

/* ============ STEPS ============ */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:22px;
  position:relative;
}
.steps::before{
  content:"";
  position:absolute;
  left:6%;right:6%;top:22px;
  height:1px;
  background:linear-gradient(90deg,var(--cyan),var(--magenta));
  opacity:.28;
}
.step{
  position:relative;
  padding-top:56px;
}
.step::before{
  content:"";
  position:absolute;
  top:14px;left:0;
  width:16px;height:16px;
  border-radius:50%;
  background:var(--bg);
  border:2px solid var(--cyan);
  box-shadow:0 0 12px rgba(53,214,245,.5);
}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{margin:0;font-size:14.5px;color:var(--dim);}
.step em{
  display:block;
  font-style:normal;
  font-size:12.5px;
  letter-spacing:1.2px;
  color:var(--magenta);
  margin-bottom:8px;
}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:var(--glass-2);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.faq-item[open]{
  border-color:var(--line-2);
  box-shadow:inset 3px 0 0 var(--cyan),0 0 22px rgba(53,214,245,.12);
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:19px 22px;
  font-size:17px;
  font-weight:600;
  color:#fff;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary i{
  flex:none;
  width:32px;height:32px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line-2);
  color:var(--cyan);
  font-size:12px;
  transition:transform var(--dur) var(--ease);
}
.faq-item[open] summary i{transform:rotate(180deg);}
.faq-answer{
  padding:0 22px 22px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--dim);
  border-top:1px solid rgba(53,214,245,.12);
  padding-top:16px;
}

/* ============ CTA ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:linear-gradient(115deg,rgba(255,77,141,.14),rgba(53,214,245,.1) 46%,rgba(108,75,255,.16));
  padding:44px;
  display:grid;
  grid-template-columns:1fr auto;
  gap:36px;
  align-items:center;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(53,214,245,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(53,214,245,.05) 1px,transparent 1px);
  background-size:36px 36px;
  pointer-events:none;
}
.cta-band h2{margin-bottom:10px;}
.cta-band p{color:var(--dim);margin:0;max-width:560px;}
.cta-form{
  position:relative;
  display:flex;
  gap:12px;
  align-items:center;
}
.cta-form input{
  height:50px;
  min-width:250px;
  padding:0 16px;
  border-radius:var(--r-sm);
  border:1px solid rgba(53,214,245,.24);
  background:rgba(7,10,18,.6);
  color:var(--text);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.cta-form input::placeholder{color:var(--mute);}
.cta-form input:focus{
  outline:none;
  border-color:var(--cyan);
  box-shadow:0 0 0 3px rgba(53,214,245,.16);
}

/* ============ FOOTER ============ */
.site-footer{
  position:relative;
  background:var(--bg-2);
  padding:64px 0 26px;
  font-size:14.5px;
  color:var(--dim);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--cyan),var(--magenta),transparent);
  opacity:.7;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:38px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
  color:#fff;
  font-weight:800;
  font-size:16px;
}
.footer-brand .brand-mark{width:32px;height:32px;font-size:12px;border-radius:10px;}
.footer-brand .brand-text em{font-style:normal;color:var(--cyan);}
.footer-about{color:var(--dim);font-size:14px;line-height:1.8;margin:0;max-width:340px;}
.footer-title{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-links{display:grid;gap:10px;}
.footer-links a{color:var(--dim);font-size:14px;}
.footer-links a:hover{color:var(--cyan);}
.footer-contact{margin:0;font-size:14px;line-height:1.9;color:var(--dim);}
.footer-contact b{color:var(--text);font-weight:600;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  padding-top:22px;
  border-top:1px solid rgba(53,214,245,.12);
  font-size:13px;
  color:var(--mute);
}
.footer-bottom .social{display:flex;gap:18px;}
.footer-bottom .social a{color:var(--mute);}
.footer-bottom .social a:hover{color:var(--cyan);}

/* ============ RESPONSIVE ============ */
@media (max-width:1180px){
  .nav-link{padding:0 12px;font-size:14.5px;}
  .header-actions{margin-left:14px;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .nav-list{display:none;}
  .menu-toggle{display:grid;place-items:center;}
  .header-actions{margin-left:auto;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .split,.split.reverse{grid-template-columns:1fr;gap:30px;}
  .section{padding:70px 0;}
  .scene-grid{grid-template-columns:1fr 1fr;}
  .scene-card:nth-child(2){margin-top:0;}
  .steps{grid-template-columns:1fr 1fr;gap:28px;}
  .steps::before{display:none;}
  .data-band{grid-template-columns:1fr 1fr;}
  .data-cell:nth-child(2){border-right:none;}
  .data-cell:nth-child(1),.data-cell:nth-child(2){border-bottom:1px solid var(--line);}
  .cta-band{grid-template-columns:1fr;padding:34px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  body{font-size:15.5px;}
  .page-hero{padding:64px 0 56px;}
  .hero-lead{font-size:16px;}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;}
  .rank-item{grid-template-columns:48px 1fr;gap:14px;}
  .rank-meta{grid-column:2;}
  .rank-arrow{display:none;}
  .hero-actions .btn{width:100%;}
  .cta-form{flex-direction:column;align-items:stretch;width:100%;}
  .cta-form input{min-width:0;width:100%;}
  .cta-form .btn{width:100%;}
}
@media (max-width:560px){
  h1{font-size:32px;}
  h2{font-size:25px;}
  .scene-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .data-band{grid-template-columns:1fr;}
  .data-cell{border-right:none;border-bottom:1px solid var(--line);}
  .data-cell:last-child{border-bottom:none;}
  .footer-grid{grid-template-columns:1fr;}
  .brand-text{font-size:15px;}
}
@media (max-width:420px){
  .btn{width:100%;}
  .hero-tags{gap:8px;}
  .tag{font-size:12.5px;padding:5px 12px;}
  .faq-item summary{font-size:15.5px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --bg:#070A12;
  --bg-2:#0B1020;
  --bg-3:#101731;
  --glass:rgba(255,255,255,.05);
  --glass-2:rgba(255,255,255,.07);
  --line:rgba(53,214,245,.18);
  --line-2:rgba(53,214,245,.34);
  --cyan:#35D6F5;
  --cyan-dim:rgba(53,214,245,.12);
  --cyan-deep:rgba(53,214,245,.26);
  --magenta:#FF4D8D;
  --violet:#6C4BFF;
  --text:#EAF2FF;
  --dim:#9AAAC6;
  --mute:#6B7A96;
  --ok:#37C9A3;
  --warn:#E0A340;
  --err:#E86A5C;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --pill:999px;
  --shadow:0 8px 30px rgba(3,8,22,.55);
  --shadow-hi:0 16px 44px rgba(3,8,22,.72);
  --glow:0 0 22px rgba(53,214,245,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
  --max:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:17px;
  line-height:1.85;
  letter-spacing:.1px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-sm)}
a{color:var(--cyan);text-decoration:none;transition:color .24s var(--ease),opacity .24s var(--ease)}
a:hover{color:#6FE4FF}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.3px;line-height:1.25;color:var(--text)}
h1{font-size:clamp(32px,4.4vw,50px);font-weight:800;letter-spacing:-.5px}
h2{font-size:clamp(24px,3vw,34px)}
h3{font-size:clamp(19px,2vw,22px);font-weight:600}
h4{font-size:17px;font-weight:600}
p{margin:0 0 16px}
ul,ol{margin:0 0 16px;padding-left:20px}
li{margin-bottom:8px}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
::selection{background:rgba(53,214,245,.3);color:#fff}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 32px}
.section{padding:96px 0;position:relative}
.section--tight{padding:72px 0}
.section--alt{background:var(--bg-2);border-top:1px solid rgba(255,255,255,.04);border-bottom:1px solid rgba(255,255,255,.04)}
.grid-bg{
  background-image:linear-gradient(rgba(53,214,245,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(53,214,245,.045) 1px,transparent 1px);
  background-size:56px 56px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.28em;text-transform:uppercase;
  color:var(--cyan);font-weight:600;margin-bottom:16px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:linear-gradient(90deg,var(--cyan),var(--magenta));border-radius:2px}
.lead{color:var(--dim);font-size:16.5px;max-width:62ch}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head p{margin:10px 0 0;color:var(--dim);max-width:60ch}
.text-link{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--cyan);white-space:nowrap}
.text-link svg{transition:transform .24s var(--ease)}
.text-link:hover svg{transform:translateX(4px)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,10,18,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.05);
}
.site-header.is-scrolled{background:rgba(7,10,18,.94)}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,rgba(53,214,245,0),var(--cyan) 22%,var(--magenta) 78%,rgba(255,77,141,0));
  opacity:.75;
}
.header-inner{display:flex;align-items:center;gap:28px;min-height:74px}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--text);flex-shrink:0}
.brand:hover{color:var(--text)}
.brand-mark{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  font-weight:800;font-size:15px;letter-spacing:.5px;color:#050A14;
  background:linear-gradient(135deg,var(--cyan),var(--violet));
  box-shadow:0 0 18px rgba(53,214,245,.45);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.2px}
.brand-text em{font-style:normal;color:var(--cyan)}
.nav-list{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;color:var(--dim);font-size:15px;font-weight:500;
  padding:10px 14px;border-radius:var(--pill);
  transition:color .24s var(--ease),background .24s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:4px;width:0;height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--magenta));
  border-radius:2px;transform:translateX(-50%);
  transition:width .26s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link:hover::after{width:42%}
.nav-link.is-active{
  color:var(--text);font-weight:600;
  background:rgba(53,214,245,.1);
  box-shadow:inset 0 0 0 1px rgba(53,214,245,.28);
}
.nav-link.is-active::after{width:52%;box-shadow:0 0 12px rgba(53,214,245,.9)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:8px}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease)}
.menu-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.is-open span:nth-child(2){opacity:0}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.2px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease),opacity .24s var(--ease),color .24s var(--ease);
}
.btn svg{transition:transform .24s var(--ease)}
.btn-primary{
  background:linear-gradient(120deg,var(--cyan),var(--violet));
  color:#050A14;border-radius:var(--pill);
  box-shadow:0 0 20px rgba(53,214,245,.4);
}
.btn-primary:hover{color:#050A14;transform:translateY(-2px);box-shadow:0 0 30px rgba(53,214,245,.62)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 14px rgba(53,214,245,.35)}
.btn-ghost{
  background:transparent;color:var(--cyan);border-color:var(--line-2);
}
.btn-ghost:hover{background:var(--cyan-dim);color:#7FE7FF;transform:translateY(-2px)}
.btn-line{
  background:rgba(255,255,255,.03);color:var(--text);border-color:rgba(255,255,255,.12);
}
.btn-line:hover{border-color:var(--line-2);background:rgba(53,214,245,.08);transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn:hover svg{transform:translateX(3px)}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;pointer-events:none}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:64px 0 84px;
  border-bottom:1px solid rgba(255,255,255,.05);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.34;
}
.hero-mask{
  position:absolute;inset:0;
  background:
    radial-gradient(900px 420px at 12% 8%,rgba(53,214,245,.16),transparent 62%),
    radial-gradient(700px 380px at 92% 84%,rgba(255,77,141,.14),transparent 66%),
    linear-gradient(180deg,rgba(7,10,18,.72),rgba(7,10,18,.95) 72%,var(--bg));
}
.hero-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(53,214,245,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(53,214,245,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.8),transparent 88%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.8),transparent 88%);
}
.hero-beam{
  position:absolute;top:-30%;left:-10%;width:60%;height:170%;
  background:linear-gradient(90deg,transparent,rgba(53,214,245,.12),transparent);
  transform:rotate(14deg);pointer-events:none;
}
.hero .container{position:relative;z-index:2}
.crumbs{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--dim);margin-bottom:26px;flex-wrap:wrap}
.crumbs a{color:var(--dim)}
.crumbs a:hover{color:var(--cyan)}
.crumbs .sep{color:var(--cyan);opacity:.7}
.crumbs .now{color:var(--text)}
.hero-layout{display:grid;grid-template-columns:1.35fr .95fr;gap:48px;align-items:start}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:8px 16px;border-radius:var(--pill);
  background:rgba(53,214,245,.1);border:1px solid var(--line);
  font-size:13px;color:var(--cyan);font-weight:600;letter-spacing:.3px;margin-bottom:22px;
}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);display:inline-block;animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero h1{margin-bottom:20px}
.hero h1 span{
  background:linear-gradient(100deg,var(--cyan),var(--magenta));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{color:var(--dim);font-size:17px;max-width:56ch;margin-bottom:30px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:30px}
.hero-facts{display:flex;gap:26px;flex-wrap:wrap;padding-top:22px;border-top:1px solid rgba(255,255,255,.08)}
.hero-facts div{font-size:14px;color:var(--dim)}
.hero-facts b{display:block;font-size:20px;color:var(--text);font-weight:700;margin-bottom:2px}
.hero-facts b em{font-style:normal;color:var(--cyan);font-size:14px;margin-left:2px}

/* side panel */
.side-panel{
  background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.03));
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:26px;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow);
}
.side-panel h3{font-size:18px;margin-bottom:6px}
.side-panel .panel-note{color:var(--dim);font-size:14px;margin-bottom:20px}
.spec-list{list-style:none;padding:0;margin:0 0 20px}
.spec-list li{
  display:flex;justify-content:space-between;gap:14px;
  padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.08);
  font-size:14.5px;color:var(--dim);margin:0;
}
.spec-list li span:last-child{color:var(--text);font-weight:600}
.spec-list li:last-child{border-bottom:0}
.panel-cover{border-radius:var(--r-md);overflow:hidden;border:1px solid rgba(255,255,255,.08);margin-bottom:18px}
.panel-cover img{width:100%;height:130px;object-fit:cover;transition:transform .5s var(--ease)}
.panel-cover:hover img{transform:scale(1.04)}

/* ---------- main + aside (试玩卡片) ---------- */
.demo-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:34px;align-items:start}
.rail-wrap{position:relative}
.rail{
  display:flex;gap:18px;overflow-x:auto;padding:4px 4px 18px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-track{background:rgba(255,255,255,.04);border-radius:99px}
.rail::-webkit-scrollbar-thumb{background:linear-gradient(90deg,var(--cyan),var(--violet));border-radius:99px}
.rail-hint{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--mute);margin-top:6px}
.machine-card{
  flex:0 0 300px;scroll-snap-align:start;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.025));
  border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
  display:flex;flex-direction:column;
}
.machine-card:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow-hi)}
.machine-thumb{position:relative;aspect-ratio:16/10;overflow:hidden}
.machine-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s var(--ease)}
.machine-card:hover .machine-thumb img{transform:scale(1.03)}
.machine-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,10,18,0) 40%,rgba(7,10,18,.85))}
.machine-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.tag-row{display:flex;gap:8px;flex-wrap:wrap}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 11px;border-radius:var(--pill);
  font-size:12px;font-weight:600;letter-spacing:.3px;
  background:rgba(53,214,245,.12);color:#7FE7FF;border:1px solid rgba(53,214,245,.24);
}
.tag--magenta{background:rgba(255,77,141,.12);color:#FF8FB6;border-color:rgba(255,77,141,.26)}
.tag--violet{background:rgba(108,75,255,.14);color:#B5A2FF;border-color:rgba(108,75,255,.3)}
.machine-body h3{font-size:18px;line-height:1.4}
.machine-body p{color:var(--dim);font-size:14.5px;margin:0;line-height:1.75}
.meta-row{
  display:flex;flex-wrap:wrap;gap:8px;align-items:center;
  font-size:12.5px;color:var(--mute);letter-spacing:.3px;
  margin-top:auto;padding-top:12px;border-top:1px solid rgba(255,255,255,.07);
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--cyan);opacity:.7}
.card-link{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--cyan);margin-top:12px}
.card-link svg{transition:transform .24s var(--ease)}
.card-link:hover svg{transform:translateX(3px)}

.aside-stack{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px}
.info-card{
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--shadow);
}
.info-card h4{margin-bottom:12px;font-size:16px;display:flex;align-items:center;gap:9px}
.info-card h4 i{width:22px;height:22px;border-radius:7px;display:inline-block;background:linear-gradient(135deg,var(--cyan),var(--violet));flex-shrink:0}
.info-card ul{list-style:none;padding:0;margin:0}
.info-card li{display:flex;gap:10px;font-size:14px;color:var(--dim);margin-bottom:11px;line-height:1.7}
.info-card li:last-child{margin-bottom:0}
.info-card li::before{content:"";flex-shrink:0;width:6px;height:6px;margin-top:9px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px rgba(53,214,245,.8)}
.info-card--warn{border-color:rgba(224,163,64,.3)}
.info-card--warn h4 i{background:linear-gradient(135deg,var(--warn),var(--magenta))}
.info-card--warn li::before{background:var(--warn);box-shadow:0 0 8px rgba(224,163,64,.7)}
.info-card .btn{width:100%;margin-top:16px}

/* ---------- stats band ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:2px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
}
.stat{
  background:var(--bg-2);padding:30px 26px;
  transition:background .24s var(--ease);
}
.stat:hover{background:var(--bg-3)}
.stat b{display:block;font-size:clamp(26px,3.2vw,38px);font-weight:800;color:var(--cyan);letter-spacing:-1px;line-height:1.1}
.stat b em{font-style:normal;font-size:16px;color:var(--magenta);margin-left:3px;font-weight:700}
.stat span{display:block;margin-top:8px;font-size:14px;color:var(--dim)}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step{
  position:relative;padding:30px 26px 26px;
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  border:1px solid rgba(255,255,255,.09);border-radius:var(--r-lg);
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:var(--line-2)}
.step-no{
  display:inline-grid;place-items:center;width:46px;height:46px;border-radius:14px;
  font-size:19px;font-weight:800;color:var(--cyan);
  background:rgba(53,214,245,.09);border:1px solid var(--line);margin-bottom:18px;
}
.step h3{font-size:19px;margin-bottom:10px}
.step p{color:var(--dim);font-size:14.5px;margin:0 0 14px}
.step ul{margin:0;padding-left:18px}
.step li{color:var(--dim);font-size:14px}
.step li::marker{color:var(--cyan)}

/* ---------- split feature ---------- */
.split{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:center}
.split-media{position:relative}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);border:1px solid var(--line);box-shadow:var(--shadow)}
.split-media .float-card{
  position:absolute;right:-18px;bottom:-18px;width:230px;
  background:rgba(11,16,32,.92);border:1px solid var(--line-2);border-radius:var(--r-md);
  padding:18px;box-shadow:var(--shadow-hi);backdrop-filter:blur(10px);
}
.float-card b{display:block;font-size:24px;color:var(--magenta);font-weight:800;line-height:1.2}
.float-card span{font-size:13px;color:var(--dim)}
.compare{list-style:none;padding:0;margin:26px 0 0}
.compare li{
  display:grid;grid-template-columns:120px 1fr;gap:16px;
  padding:14px 0;border-top:1px solid rgba(255,255,255,.07);
  font-size:15px;color:var(--dim);margin:0;
}
.compare li strong{color:var(--text);font-size:14px;font-weight:600;letter-spacing:.3px}

/* ---------- faq ---------- */
.faq{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq details{
  background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.09);
  border-left:3px solid rgba(255,255,255,.09);
  border-radius:var(--r-md);
  transition:border-color .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease);
}
.faq details[open]{
  border-color:var(--line-2);border-left-color:var(--cyan);
  background:linear-gradient(160deg,rgba(53,214,245,.08),rgba(255,255,255,.02));
  box-shadow:0 0 26px rgba(53,214,245,.14);
}
.faq summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;font-size:17px;font-weight:600;color:var(--text);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"＋";flex-shrink:0;width:30px;height:30px;border-radius:50%;
  display:grid;place-items:center;font-size:15px;color:var(--cyan);
  border:1px solid var(--line);transition:transform .26s var(--ease),background .26s var(--ease);
}
.faq details[open] summary::after{transform:rotate(135deg);background:rgba(53,214,245,.12)}
.faq .answer{padding:0 22px 22px;color:var(--dim);font-size:15.5px;line-height:1.85}
.faq .answer p{margin:0}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(53,214,245,.12),rgba(108,75,255,.12) 55%,rgba(255,77,141,.12));
  padding:46px;display:grid;grid-template-columns:1.3fr .9fr;gap:36px;align-items:center;
  box-shadow:var(--shadow);
}
.cta-band::before{
  content:"";position:absolute;top:-60%;left:38%;width:34%;height:220%;
  background:linear-gradient(90deg,transparent,rgba(255,77,141,.22),transparent);
  transform:rotate(16deg);pointer-events:none;
}
.cta-band h2{margin-bottom:12px;position:relative}
.cta-band p{color:var(--dim);margin:0;position:relative;max-width:52ch}
.cta-actions{display:flex;flex-direction:column;gap:14px;position:relative}
.cta-actions .btn{width:100%}
.cta-note{font-size:13px;color:var(--mute);text-align:center}

/* ---------- footer ---------- */
.site-footer{
  border-top:1px solid rgba(255,255,255,.06);
  background:var(--bg-2);
  padding:64px 0 26px;position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--cyan),var(--magenta),transparent);
  opacity:.7;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:38px;padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.07)}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-about{color:var(--dim);font-size:14.5px;line-height:1.8;margin:0;max-width:44ch}
.footer-title{font-size:15px;color:var(--text);margin-bottom:16px;font-weight:600}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{color:var(--dim);font-size:14.5px}
.footer-links a:hover{color:var(--cyan)}
.footer-contact{color:var(--dim);font-size:14.5px;line-height:1.9;margin:0}
.footer-contact b{color:var(--cyan);font-weight:600}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap;
  padding-top:22px;font-size:13.5px;color:var(--mute);
}
.footer-bottom .social{display:flex;gap:20px}
.footer-bottom .social a{color:var(--mute);font-size:13.5px}
.footer-bottom .social a:hover{color:var(--cyan)}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:74px 0 0;z-index:70;
  background:rgba(7,10,18,.98);backdrop-filter:blur(16px);
  padding:26px 22px 40px;
  display:none;flex-direction:column;gap:8px;
  border-top:1px solid var(--line);
}
.drawer.is-open{display:flex}
.drawer a{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 4px;border-bottom:1px solid rgba(255,255,255,.07);
  color:var(--text);font-size:16px;font-weight:500;min-height:44px;
}
.drawer a::after{content:"→";color:var(--cyan)}
.drawer a.is-active{color:var(--cyan);font-weight:700}
.drawer .btn{margin-top:22px}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .hero-layout{grid-template-columns:1fr;gap:36px}
  .demo-layout{grid-template-columns:1fr}
  .aside-stack{position:static;flex-direction:row;flex-wrap:wrap}
  .aside-stack .info-card{flex:1 1 300px}
  .split{grid-template-columns:1fr;gap:34px}
  .split-media .float-card{right:14px;bottom:14px}
}
@media (max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .steps{grid-template-columns:1fr;gap:16px}
  .stats{grid-template-columns:1fr 1fr}
  .cta-band{grid-template-columns:1fr;padding:36px}
}
@media (max-width:820px){
  .container{padding:0 24px}
  .nav-list{display:none}
  .menu-toggle{display:flex}
  .header-actions .btn{display:none}
  .section{padding:64px 0}
  .section--tight{padding:52px 0}
  .hero{padding:44px 0 64px}
}
@media (max-width:560px){
  body{font-size:16px}
  .container{padding:0 18px}
  .section{padding:48px 0}
  .hero-facts{gap:18px}
  .hero-cta .btn{width:100%}
  .machine-card{flex:0 0 82%}
  .compare li{grid-template-columns:1fr;gap:6px}
  .stats{grid-template-columns:1fr 1fr}
  .stat{padding:22px 18px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .faq summary{font-size:16px;padding:17px 18px}
  .faq .answer{padding:0 18px 18px}
  .cta-band{padding:28px 20px}
}
@media (max-width:420px){
  h1{font-size:30px}
  .btn{width:100%}
  .machine-card{flex:0 0 88%}
  .stats{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
  --bg:#070A12;
  --bg-2:#0B1020;
  --bg-3:#101731;
  --glass:rgba(255,255,255,.05);
  --glass-2:rgba(255,255,255,.075);
  --line:rgba(53,214,245,.16);
  --line-strong:rgba(53,214,245,.36);
  --primary:#35D6F5;
  --primary-soft:rgba(53,214,245,.12);
  --magenta:#FF4D8D;
  --purple:#6C4BFF;
  --text:#EAF2FF;
  --text-dim:#9AAAC6;
  --text-mute:#6C7A96;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --pill:999px;
  --shadow:0 8px 30px rgba(3,8,22,.55);
  --glow:0 0 22px rgba(53,214,245,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:240ms;
  --container:1240px;
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --font-num:"Inter","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100%;
  color:var(--text);
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.85;
  background:
    radial-gradient(1100px 560px at 10% -12%,rgba(108,75,255,.20),transparent 62%),
    radial-gradient(900px 520px at 102% 0%,rgba(255,77,141,.13),transparent 58%),
    var(--bg);
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(53,214,245,.055) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(53,214,245,.055) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.9;
}
body::after{
  content:"";position:fixed;inset:-10%;z-index:0;pointer-events:none;
  background:repeating-linear-gradient(116deg,transparent 0 42px,rgba(53,214,245,.035) 42px 43px);
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease)}
a:hover{color:var(--primary)}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.4px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:8px}
::selection{background:rgba(53,214,245,.28);color:#fff}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;position:relative;z-index:2}

/* ============ 顶栏导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,10,18,.74);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(53,214,245,.10);
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),var(--magenta),transparent);
  opacity:0;transition:opacity var(--dur) var(--ease);
}
.site-header.is-scrolled{background:rgba(7,10,18,.94);border-bottom-color:rgba(53,214,245,.24);box-shadow:0 12px 34px rgba(3,8,22,.62)}
.site-header.is-scrolled::after{opacity:.85}
.header-inner{display:flex;align-items:center;gap:26px;min-height:74px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:42px;height:42px;border-radius:14px;display:grid;place-items:center;
  font-family:var(--font-num);font-weight:800;font-size:15px;letter-spacing:.5px;color:#03121A;
  background:linear-gradient(135deg,var(--primary),var(--purple) 70%);
  box-shadow:0 0 18px rgba(53,214,245,.40);
}
.brand-text{font-size:18px;font-weight:800;letter-spacing:-.3px;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--primary);margin-left:2px}
.nav-list{display:flex;align-items:center;gap:6px;margin-left:8px}
.nav-link{
  position:relative;display:inline-block;padding:9px 15px;border-radius:var(--pill);
  font-size:15px;color:var(--text-dim);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:4px;width:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--magenta));
  transform:translateX(-50%);transition:width var(--dur) var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link:hover::after{width:22px}
.nav-link.is-active{
  color:#fff;background:var(--primary-soft);
  box-shadow:inset 0 0 0 1px rgba(53,214,245,.34),0 0 18px rgba(53,214,245,.18);
}
.nav-link.is-active::after{width:26px}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-toggle{
  display:none;width:46px;height:46px;border-radius:var(--radius-sm);
  background:var(--glass);border:1px solid var(--line);cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--text);transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.drawer{
  position:fixed;inset:74px 0 0 0;z-index:55;background:rgba(7,10,18,.98);
  backdrop-filter:blur(16px);padding:26px 18px 40px;
  transform:translateX(102%);opacity:0;visibility:hidden;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease),visibility var(--dur);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);opacity:1;visibility:visible}
.drawer-group-title{font-size:12px;letter-spacing:1.4px;color:var(--text-mute);text-transform:uppercase;margin:18px 0 10px}
.drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:15px 16px;border-radius:var(--radius-sm);font-size:16px;color:var(--text-dim);
  border:1px solid transparent;min-height:44px;
}
.drawer a.drawer-link:hover,.drawer a.drawer-link.is-active{color:#fff;background:var(--glass);border-color:var(--line)}
.drawer a.drawer-link::after{content:"›";font-size:20px;color:var(--primary);line-height:1}
.drawer-cta{margin-top:24px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:var(--radius-sm);border:1px solid transparent;
  font-size:15.5px;font-weight:600;cursor:pointer;min-height:46px;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.btn-primary{
  background:linear-gradient(120deg,var(--primary),var(--purple) 92%);
  color:#04121A;box-shadow:0 0 22px rgba(53,214,245,.42);border-radius:var(--pill);
}
.btn-primary:hover{color:#04121A;transform:translateY(-2px);box-shadow:0 0 30px rgba(53,214,245,.62)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 14px rgba(53,214,245,.34)}
.btn-secondary{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-secondary:hover{background:rgba(53,214,245,.12);color:var(--text);transform:translateY(-2px)}
.btn-secondary:active{transform:translateY(0);background:rgba(53,214,245,.06)}
.btn-ghost{background:transparent;color:var(--primary);padding:10px 4px;border-radius:8px}
.btn-ghost::after{content:"→";transition:transform var(--dur) var(--ease)}
.btn-ghost:hover{color:#7FE8FF}
.btn-ghost:hover::after{transform:translateX(3px)}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none}
.btn-sm{padding:10px 20px;font-size:14.5px;min-height:42px}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--pill);font-size:12.5px;font-weight:600;letter-spacing:.3px;
  background:rgba(53,214,245,.13);color:#8FE7FB;border:1px solid rgba(53,214,245,.28);
}
.badge--magenta{background:rgba(255,77,141,.13);color:#FF9DBF;border-color:rgba(255,77,141,.30)}
.badge--violet{background:rgba(108,75,255,.16);color:#BFB1FF;border-color:rgba(108,75,255,.32)}
.badge--mute{background:rgba(255,255,255,.06);color:var(--text-dim);border-color:rgba(255,255,255,.10)}

/* ============ 首屏 ============ */
.hero{
  position:relative;overflow:hidden;
  padding:92px 0 86px;
  background-image:
    linear-gradient(180deg,rgba(7,10,18,.76) 0%,rgba(7,10,18,.88) 55%,rgba(7,10,18,.97) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid rgba(53,214,245,.12);
}
.hero::after{
  content:"";position:absolute;left:-10%;top:-30%;width:60%;height:150%;
  background:radial-gradient(closest-side,rgba(53,214,245,.18),transparent 72%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:44px;align-items:center;position:relative;z-index:2}
.hero-title{font-size:clamp(34px,4.4vw,52px);font-weight:800;line-height:1.2;letter-spacing:-.5px;margin:20px 0 0}
.hero-title span{
  background:linear-gradient(100deg,var(--primary),var(--magenta) 85%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{margin-top:20px;font-size:17px;color:var(--text-dim);max-width:60ch;line-height:1.8}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-meta{margin-top:30px;display:flex;flex-wrap:wrap;gap:10px}

.hero-card{
  background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.03));
  border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);backdrop-filter:blur(12px);
  padding:20px;position:relative;overflow:hidden;
}
.hero-card::before{
  content:"";position:absolute;left:0;top:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),transparent);opacity:.7;
}
.hero-card-img{border-radius:var(--radius);overflow:hidden;aspect-ratio:16/10;border:1px solid rgba(53,214,245,.15)}
.hero-card-img img{width:100%;height:100%;object-fit:cover}
.hero-card-title{margin-top:16px;font-size:17px;font-weight:700}
.hero-card-list{margin-top:14px;display:grid;gap:11px}
.hero-card-list li{display:flex;justify-content:space-between;gap:14px;font-size:14.5px;color:var(--text-dim);padding-bottom:10px;border-bottom:1px dashed rgba(53,214,245,.14)}
.hero-card-list li:last-child{border-bottom:0;padding-bottom:0}
.hero-card-list b{color:var(--primary);font-family:var(--font-num);font-weight:700}

/* ============ 面包屑 ============ */
.crumb{padding:22px 0 0;font-size:14px;color:var(--text-dim)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb li::after{content:"›";color:var(--primary);margin-left:8px}
.crumb li:last-child::after{content:"";margin:0}
.crumb li:last-child{color:var(--text-mute)}

/* ============ 板块 ============ */
.section{padding:96px 0;position:relative}
.section--alt{background:linear-gradient(180deg,rgba(11,16,32,.75),rgba(11,16,32,.35));border-top:1px solid rgba(53,214,245,.09);border-bottom:1px solid rgba(53,214,245,.09)}
.section-head{max-width:760px}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-size:12.5px;letter-spacing:1.6px;
  color:var(--primary);text-transform:uppercase;font-weight:700;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--primary),var(--magenta))}
.section-title{margin-top:16px;font-size:clamp(26px,3vw,34px);font-weight:700}
.section-desc{margin-top:16px;color:var(--text-dim);font-size:16px}
.section-head--row{display:flex;justify-content:space-between;align-items:flex-end;gap:28px;max-width:none;flex-wrap:wrap}

/* ============ 时间轴 ============ */
.timeline{position:relative;margin-top:52px;display:grid;gap:18px}
.timeline::before{
  content:"";position:absolute;left:27px;top:14px;bottom:14px;width:1px;
  background:linear-gradient(180deg,transparent,rgba(53,214,245,.5),rgba(255,77,141,.4),transparent);
}
.step{display:grid;grid-template-columns:56px minmax(0,1fr);gap:22px;align-items:flex-start;position:relative}
.step-index{
  width:56px;height:56px;border-radius:var(--pill);display:grid;place-items:center;
  background:var(--bg-3);border:1px solid var(--line-strong);color:var(--primary);
  font-family:var(--font-num);font-weight:800;font-size:17px;z-index:2;
  box-shadow:0 0 0 6px rgba(7,10,18,.85);
}
.step-body{
  background:linear-gradient(150deg,rgba(255,255,255,.06),rgba(255,255,255,.026));
  border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;
  box-shadow:var(--shadow);transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.step:hover .step-body{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 14px 36px rgba(3,8,22,.6)}
.step-title{font-size:19px;font-weight:700}
.step-text{margin-top:10px;color:var(--text-dim);font-size:15.5px}
.step-tags{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px}

/* ============ 对照分栏 ============ */
.split{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:28px;margin-top:48px;align-items:start}
.rows{display:grid;gap:14px}
.row-item{
  position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;align-items:center;
  padding:20px 24px 20px 28px;border-radius:var(--radius);
  background:var(--glass);border:1px solid var(--line);
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.row-item::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--magenta));opacity:.55;
  transition:opacity var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.row-item:hover{transform:translateX(4px);background:var(--glass-2);border-color:var(--line-strong)}
.row-item:hover::before{opacity:1;box-shadow:0 0 14px rgba(53,214,245,.6)}
.row-name{font-size:16.5px;font-weight:700}
.row-desc{margin-top:7px;color:var(--text-dim);font-size:14.5px;line-height:1.75}
.row-side{display:flex;flex-direction:column;align-items:flex-end;gap:8px;text-align:right}
.row-side .num{font-family:var(--font-num);font-size:15px;font-weight:700;color:var(--primary)}

.aside{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.028));
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:20px;
  box-shadow:var(--shadow);position:sticky;top:100px;
}
.aside-img{border-radius:var(--radius);overflow:hidden;aspect-ratio:4/3;border:1px solid rgba(53,214,245,.16)}
.aside-img img{width:100%;height:100%;object-fit:cover;transition:transform var(--dur) var(--ease)}
.aside:hover .aside-img img{transform:scale(1.03)}
.aside-title{margin-top:18px;font-size:17.5px;font-weight:700}
.aside-list{margin-top:14px;display:grid;gap:12px}
.aside-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text-dim);line-height:1.75}
.aside-list li::before{content:"";flex:0 0 auto;width:7px;height:7px;margin-top:9px;border-radius:2px;background:var(--primary);box-shadow:0 0 10px rgba(53,214,245,.6)}
.aside-note{margin-top:18px;padding-top:16px;border-top:1px dashed rgba(53,214,245,.2);font-size:13.5px;color:var(--text-mute)}

/* ============ 数据带 ============ */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-top:48px}
.stat{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px;transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.stat:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.stat-num{font-family:var(--font-num);font-size:clamp(30px,3.4vw,40px);font-weight:800;line-height:1;letter-spacing:-1px}
.stat:nth-child(1) .stat-num,.stat:nth-child(3) .stat-num{color:var(--primary);text-shadow:0 0 22px rgba(53,214,245,.35)}
.stat:nth-child(2) .stat-num,.stat:nth-child(4) .stat-num{color:var(--magenta);text-shadow:0 0 22px rgba(255,77,141,.3)}
.stat-unit{font-size:15px;font-weight:600;margin-left:5px;color:var(--text-dim);font-family:var(--font)}
.stat-label{margin-top:14px;font-size:15px;font-weight:600}
.stat-text{margin-top:8px;font-size:13.8px;color:var(--text-dim);line-height:1.7}

/* ============ 误区卡 ============ */
.myths{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:44px}
.myth{
  border-radius:var(--radius);padding:24px;background:var(--glass);border:1px solid var(--line);
  position:relative;overflow:hidden;transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.myth:hover{transform:translateY(-4px);border-color:rgba(255,77,141,.38)}
.myth-no{font-family:var(--font-num);font-size:13px;font-weight:800;letter-spacing:1.4px;color:var(--magenta)}
.myth-title{margin-top:12px;font-size:17.5px;font-weight:700}
.myth-text{margin-top:10px;font-size:15px;color:var(--text-dim)}
.myth-fix{margin-top:14px;font-size:14.5px;color:#8FE7FB;border-top:1px dashed rgba(53,214,245,.18);padding-top:13px}
.myth-fix b{color:var(--primary)}

/* ============ FAQ ============ */
.faq{margin-top:44px;display:grid;gap:14px;max-width:960px}
.faq-item{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.faq-item[open]{border-color:rgba(53,214,245,.4);background:var(--glass-2);box-shadow:inset 3px 0 0 rgba(53,214,245,.6),0 0 26px rgba(53,214,245,.10)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 58px 20px 24px;position:relative;
  font-size:17px;font-weight:600;color:var(--text);min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:22px;top:50%;width:26px;height:26px;margin-top:-13px;border-radius:50%;
  border:1px solid var(--line-strong);background:rgba(53,214,245,.10);
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease);
  background-image:linear-gradient(45deg,transparent 48%,var(--primary) 48%,var(--primary) 52%,transparent 52%),
                   linear-gradient(-45deg,transparent 48%,var(--primary) 48%,var(--primary) 52%,transparent 52%);
  background-size:11px 11px,11px 11px;background-position:center 9px,center 9px;background-repeat:no-repeat;
}
.faq-item[open] summary::after{transform:rotate(180deg);background-color:rgba(53,214,245,.22)}
.faq-item summary:hover{color:var(--primary)}
.faq-body{padding:0 26px 24px;font-size:15.5px;color:var(--text-dim);line-height:1.85;border-left:3px solid transparent}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;margin:0 auto;
  background:linear-gradient(115deg,rgba(255,77,141,.14),rgba(53,214,245,.12) 55%,rgba(108,75,255,.16));
  border:1px solid var(--line-strong);border-radius:var(--radius-lg);
  padding:44px;display:grid;grid-template-columns:minmax(0,6fr) minmax(0,5fr);gap:34px;align-items:center;
  box-shadow:var(--shadow);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(118deg,transparent 0 46px,rgba(53,214,245,.05) 46px 47px);
  pointer-events:none;
}
.cta-title{font-size:clamp(24px,2.6vw,30px);font-weight:800}
.cta-text{margin-top:14px;color:var(--text-dim);font-size:16px;max-width:52ch}
.cta-form{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:2}
.cta-form input{
  flex:1 1 220px;min-height:48px;padding:0 18px;border-radius:var(--radius-sm);
  background:rgba(7,10,18,.65);border:1px solid rgba(53,214,245,.24);color:var(--text);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.cta-form input::placeholder{color:var(--text-mute)}
.cta-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(53,214,245,.18)}
.form-hint{margin-top:12px;font-size:13.5px;color:var(--text-mute);width:100%}
.form-hint.is-ok{color:#7FE7CB}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;position:relative;background:linear-gradient(180deg,rgba(11,16,32,.6),rgba(7,10,18,.95));
  border-top:1px solid rgba(53,214,245,.1);padding:64px 0 30px;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),var(--magenta),transparent);opacity:.75;
}
.footer-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,2.4fr) minmax(0,2.4fr) minmax(0,3fr);gap:34px}
.footer-brand{display:flex;align-items:center;gap:12px}
.footer-brand .brand-mark{width:38px;height:38px;font-size:14px;border-radius:12px}
.footer-brand .brand-text{font-size:17px}
.footer-about{margin-top:18px;color:var(--text-dim);font-size:14.5px;line-height:1.8;max-width:38ch}
.footer-title{font-size:15.5px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-links{display:grid;gap:11px}
.footer-links a{font-size:14.5px;color:var(--text-dim)}
.footer-links a:hover{color:var(--primary)}
.footer-contact{font-size:14.5px;color:var(--text-dim);line-height:1.9}
.footer-contact b{color:var(--primary);font-family:var(--font-num)}
.footer-bottom{
  margin-top:46px;padding-top:22px;border-top:1px solid rgba(255,255,255,.07);
  display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap;
  font-size:13.5px;color:var(--text-mute);
}
.footer-bottom .social{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom .social a{color:var(--text-dim)}
.footer-bottom .social a:hover{color:var(--primary)}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .split{grid-template-columns:1fr}
  .aside{position:static}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{grid-template-columns:1fr}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .section{padding:72px 0}
}
@media (max-width:768px){
  body{font-size:16px}
  .container{padding:0 18px}
  .nav-list,.header-actions .btn{display:none}
  .nav-toggle{display:flex}
  .header-inner{min-height:66px}
  .drawer{inset:66px 0 0 0}
  .hero{padding:64px 0 56px}
  .section{padding:56px 0}
  .timeline::before{left:21px}
  .step{grid-template-columns:44px minmax(0,1fr);gap:16px}
  .step-index{width:44px;height:44px;font-size:15px;box-shadow:0 0 0 5px rgba(7,10,18,.85)}
  .myths{grid-template-columns:1fr}
  .cta-band{padding:30px 22px}
  .site-footer{margin-top:64px;padding:48px 0 24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:560px){
  .hero-title{font-size:32px}
  .stats{grid-template-columns:1fr}
  .row-item{grid-template-columns:1fr;gap:8px}
  .row-side{align-items:flex-start;text-align:left;flex-direction:row;flex-wrap:wrap}
  .hero-actions .btn{width:100%}
  .btn{width:100%}
  .btn-ghost{width:auto}
  .faq-item summary{padding:18px 54px 18px 18px;font-size:16px}
  .faq-body{padding:0 18px 20px}
  .step-body{padding:20px 18px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important}
  .row-item:hover,.step:hover .step-body,.stat:hover,.myth:hover,.aside:hover .aside-img img{transform:none}
}