/* roulang page: index */
:root{
  --bg-0:#060c18;
  --bg-1:#0a1428;
  --bg-2:#0e1c36;
  --brand:#35d6ff;
  --brand-2:#6be8ff;
  --mint:#2ee6a8;
  --rose:#ff5f8f;
  --t1:#e9f2ff;
  --t2:#a9bcd8;
  --t3:#6f83a3;
  --glass:rgba(255,255,255,.055);
  --glass-2:rgba(255,255,255,.09);
  --line:rgba(140,190,255,.16);
  --line-soft:rgba(140,190,255,.09);
  --r-card:18px;
  --r-img:14px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t2);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--mint);text-decoration:underline;text-underline-offset:3px}
button{font-family:inherit}
h1,h2,h3,h4{color:var(--t1);margin:0 0 14px;font-weight:700;letter-spacing:-.2px;line-height:1.3}
h1{font-size:46px;line-height:1.18}
h2{font-size:30px}
h3{font-size:19px}
p{margin:0 0 14px}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
.mono{font-family:var(--mono);letter-spacing:.02em}
.wrap{max-width:1200px;margin:0 auto;padding:0 32px;position:relative;z-index:1}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:300;
  background:rgba(6,12,24,.78);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line-soft);
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.scrolled{background:rgba(6,12,24,.94);border-bottom-color:var(--line);box-shadow:0 12px 40px rgba(0,0,0,.45)}
.header-inner{
  max-width:1200px;margin:0 auto;padding:0 32px;
  height:70px;display:flex;align-items:center;gap:18px;
}
.logo{display:flex;align-items:center;gap:10px;color:var(--t1);font-size:15.5px;font-weight:700;white-space:nowrap;flex:none}
.logo:hover{text-decoration:none;color:var(--t1)}
.logo-mark{
  width:32px;height:32px;border-radius:10px;flex:none;position:relative;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 0 0 1px rgba(53,214,255,.45),0 8px 24px rgba(53,214,255,.35);
}
.logo-mark::after{content:"";position:absolute;inset:9px;border-radius:50%;background:#04121f;opacity:.92}
.logo-mark::before{content:"";position:absolute;inset:13px;border-radius:50%;background:var(--mint);opacity:.9}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text span:first-child{font-size:15px;color:var(--t1)}
.logo-text span:last-child{font-size:11px;color:var(--t3);font-family:var(--mono);letter-spacing:.06em;font-weight:500}

.nav-main{display:flex;align-items:center;gap:2px;margin-left:6px}
.nav-main a{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 13px;border-radius:10px;
  font-size:14.5px;font-weight:500;color:var(--t2);
  transition:background .2s ease,color .2s ease;
}
.nav-main a:hover{color:var(--t1);background:rgba(255,255,255,.06);text-decoration:none}
.nav-main a.active{color:var(--brand);background:rgba(53,214,255,.1);box-shadow:inset 0 0 0 1px rgba(53,214,255,.22)}
.nav-main a i{font-size:12px;opacity:.75}

.head-tools{display:flex;align-items:center;gap:12px;margin-left:auto;flex:none}
.head-search{position:relative}
.head-search i{position:absolute;left:13px;top:50%;transform:translateY(-50%);font-size:12.5px;color:var(--t3);pointer-events:none}
.head-search input{
  width:172px;height:36px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);
  color:var(--t1);font-size:13px;font-family:inherit;
  padding:0 14px 0 34px;
  transition:width .25s ease,border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.head-search input::placeholder{color:var(--t3)}
.head-search input:focus{
  outline:none;width:214px;border-color:var(--brand);
  background:rgba(53,214,255,.07);
  box-shadow:0 0 0 3px rgba(53,214,255,.14);
}
.head-meta{display:flex;align-items:center;gap:6px}
.chip-link{
  display:inline-flex;align-items:center;gap:6px;
  height:32px;padding:0 11px;border-radius:9px;
  border:1px solid var(--line-soft);background:rgba(255,255,255,.03);
  font-family:var(--mono);font-size:11.5px;color:var(--t3);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.chip-link:hover{color:var(--brand);border-color:rgba(53,214,255,.4);background:rgba(53,214,255,.08);text-decoration:none}
.head-cta{padding:10px 20px;font-size:14px}

.menu-toggle{
  display:none;width:42px;height:38px;border-radius:11px;
  border:1px solid var(--line);background:var(--glass);
  color:var(--t1);font-size:16px;cursor:pointer;
  align-items:center;justify-content:center;
  transition:border-color .2s ease,color .2s ease;
}
.menu-toggle:hover{border-color:var(--brand);color:var(--brand)}

/* 抽屉 */
.drawer{
  position:fixed;top:0;right:0;height:100%;width:320px;max-width:88vw;
  background:rgba(10,20,40,.96);
  -webkit-backdrop-filter:blur(22px);
  backdrop-filter:blur(22px);
  border-left:1px solid var(--line);
  z-index:400;padding:22px 20px;overflow-y:auto;
  transform:translateX(105%);transition:transform .32s cubic-bezier(.4,0,.2,1);
}
body.drawer-open .drawer{transform:translateX(0)}
body.drawer-open{overflow:hidden}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
  background:transparent;color:var(--t2);font-size:15px;cursor:pointer;float:right;
}
.drawer-close:hover{color:var(--brand);border-color:var(--brand)}
.drawer h4{font-size:12px;font-family:var(--mono);color:var(--t3);letter-spacing:.1em;margin:26px 0 10px;text-transform:uppercase}
.drawer-nav a{
  display:block;padding:12px 14px;border-radius:11px;color:var(--t2);
  font-size:15px;font-weight:500;border:1px solid transparent;
}
.drawer-nav a:hover,.drawer-nav a.active{
  color:var(--brand);background:rgba(53,214,255,.08);border-color:rgba(53,214,255,.24);text-decoration:none;
}
.drawer-search{display:flex;align-items:center;gap:8px;background:var(--glass);border:1px solid var(--line);border-radius:12px;padding:0 12px;height:42px}
.drawer-search i{color:var(--t3);font-size:13px}
.drawer-search input{flex:1;background:none;border:0;color:var(--t1);font-size:14px;height:100%;font-family:inherit}
.drawer-search input:focus{outline:none}
.drawer .btn{width:100%;margin-top:14px}

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;cursor:pointer;font-family:inherit;font-weight:600;
  font-size:15px;padding:13px 26px;border-radius:999px;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  text-decoration:none;white-space:nowrap;
}
.btn:hover{text-decoration:none}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#04121f;
  box-shadow:0 0 0 1px rgba(53,214,255,.55),0 10px 32px rgba(53,214,255,.35);
}
.btn-primary:hover{
  color:#04121f;transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(53,214,255,.75),0 18px 48px rgba(53,214,255,.5);
}
.btn-primary:active{transform:translateY(1px);filter:brightness(.92)}
.btn-primary:focus-visible{outline:2px solid #fff;outline-offset:3px}
.btn-ghost{
  background:var(--glass);color:var(--t1);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
}
.btn-ghost:hover{color:var(--t1);border-color:var(--brand);transform:translateY(-2px);box-shadow:0 12px 32px rgba(0,0,0,.4)}
.btn-ghost:active{transform:translateY(1px)}
.btn-ghost:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.btn-sm{padding:9px 18px;font-size:13.5px}

.tag{
  display:inline-flex;align-items:center;gap:5px;
  padding:3px 11px;border-radius:999px;font-size:12px;font-weight:500;
  border:1px solid transparent;line-height:1.7;
}
.tag-brand{color:var(--brand);background:rgba(53,214,255,.1);border-color:rgba(53,214,255,.28)}
.tag-mint{color:var(--mint);background:rgba(46,230,168,.1);border-color:rgba(46,230,168,.28)}
.tag-rose{color:var(--rose);background:rgba(255,95,143,.1);border-color:rgba(255,95,143,.28)}
.tag-plain{color:var(--t3);background:rgba(255,255,255,.04);border-color:var(--line-soft)}

.kicker{
  display:inline-block;padding:5px 14px;border-radius:999px;
  border:1px solid rgba(53,214,255,.3);background:rgba(53,214,255,.08);
  color:var(--brand);font-size:12.5px;font-weight:600;letter-spacing:.04em;
  margin-bottom:16px;
}
.card{
  background:var(--glass);border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px;
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 20px 60px rgba(0,0,0,.32);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.card:hover{
  transform:translateY(-3px);border-color:rgba(53,214,255,.3);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.1),0 26px 70px rgba(0,0,0,.5);
}
.thumb{border-radius:var(--r-img);overflow:hidden;background:var(--bg-2);position:relative}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.card:hover .thumb img{transform:scale(1.04)}
.ico{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:13px;flex:none;
  color:var(--brand);background:rgba(53,214,255,.09);
  border:1px solid rgba(53,214,255,.26);
  box-shadow:0 0 22px rgba(53,214,255,.16);
  margin-bottom:16px;
}
.ico svg{width:21px;height:21px}
.grid{display:grid;gap:22px}
.g-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g-4{grid-template-columns:repeat(4,minmax(0,1fr))}

/* ============ 板块 ============ */
.section{padding:96px 0;position:relative}
.section + .section{border-top:1px solid var(--line-soft)}
.section-alt{background:var(--bg-1)}
.sec-head{max-width:760px;margin-bottom:48px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head h2{margin-bottom:12px}
.sec-desc{color:var(--t2);font-size:15.5px;margin:0}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;padding:84px 0 92px;
  background:
    radial-gradient(940px 480px at 82% 6%,rgba(53,214,255,.15),transparent 62%),
    radial-gradient(700px 420px at 4% 92%,rgba(46,230,168,.07),transparent 66%),
    linear-gradient(180deg,#060c18 0%,#08101f 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:url("/assets/images/e199e07fce48934d.webp") center/cover no-repeat;
  opacity:.11;
  -webkit-mask-image:linear-gradient(180deg,#000,rgba(0,0,0,.15));
  mask-image:linear-gradient(180deg,#000,rgba(0,0,0,.15));
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(140,190,255,.1) 1px,transparent 1px);
  background-size:26px 26px;opacity:.45;
}
.hero-inner{display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center}
.hero h1{font-size:44px;margin-bottom:20px;max-width:16em}
.hero h1 em{font-style:normal;color:var(--brand);text-shadow:0 0 28px rgba(53,214,255,.45)}
.hero-lead{font-size:16px;color:var(--t2);margin-bottom:30px;max-width:36em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px}
.trust-row li{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 13px;border-radius:999px;
  background:rgba(46,230,168,.08);border:1px solid rgba(46,230,168,.24);
  color:var(--mint);font-size:12.5px;font-weight:500;
}
.trust-row li i{font-size:11px}

.hero-panel{
  background:rgba(255,255,255,.055);
  border:1px solid var(--line);border-radius:22px;padding:20px;
  -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.1),0 30px 80px rgba(0,0,0,.55);
  position:relative;
}
.hero-panel::before{
  content:"";position:absolute;inset:-40px -30px auto auto;width:220px;height:220px;
  background:radial-gradient(circle,rgba(53,214,255,.22),transparent 68%);
  filter:blur(6px);pointer-events:none;
}
.hero-shot{aspect-ratio:16/10;border-radius:14px;overflow:hidden;border:1px solid var(--line-soft);position:relative}
.hero-shot img{width:100%;height:100%;object-fit:cover}
.hero-shot .shot-badge{
  position:absolute;left:12px;bottom:12px;
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:11.5px;font-family:var(--mono);
  color:var(--mint);background:rgba(6,12,24,.78);border:1px solid rgba(46,230,168,.35);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.roadmap{margin-top:18px}
.roadmap h4{font-size:12px;font-family:var(--mono);color:var(--t3);letter-spacing:.1em;margin:0 0 12px}
.roadmap-item{display:flex;align-items:flex-start;gap:11px;padding:9px 0;border-bottom:1px dashed rgba(140,190,255,.12)}
.roadmap-item:last-child{border-bottom:0}
.dot{width:9px;height:9px;border-radius:50%;flex:none;margin-top:9px}
.dot-live{background:var(--mint);box-shadow:0 0 0 4px rgba(46,230,168,.14),0 0 14px rgba(46,230,168,.7)}
.dot-next{background:var(--brand);box-shadow:0 0 0 4px rgba(53,214,255,.14),0 0 14px rgba(53,214,255,.7)}
.dot-plan{background:var(--t3);box-shadow:0 0 0 4px rgba(111,131,163,.14)}
.roadmap-item .rv{font-family:var(--mono);font-size:11.5px;color:var(--brand);flex:none;margin-top:2px}
.roadmap-item .rt{font-size:13px;color:var(--t2);line-height:1.6}
.subscribe{display:flex;gap:8px;margin-top:16px}
.subscribe input{
  flex:1;min-width:0;height:40px;border-radius:11px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  color:var(--t1);font-size:13px;padding:0 13px;font-family:inherit;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.subscribe input::placeholder{color:var(--t3)}
.subscribe input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(53,214,255,.14)}
.subscribe button{padding:0 18px;height:40px;font-size:13.5px;border-radius:11px}

/* ============ S02 功能卡 ============ */
.feature h3{font-size:17.5px;margin-bottom:8px}
.feature p{font-size:14px;color:var(--t2);line-height:1.8;margin-bottom:16px}

/* ============ S03 场景 ============ */
.scene-grid{display:grid;gap:22px;grid-template-columns:1.32fr 1fr}
.scene{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);min-height:200px;
  transition:transform .2s ease,border-color .2s ease;
}
.scene:hover{transform:translateY(-3px);border-color:rgba(53,214,255,.35)}
.scene img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.42}
.scene-body{
  position:relative;z-index:2;padding:26px;height:100%;
  display:flex;flex-direction:column;justify-content:flex-end;
  background:linear-gradient(180deg,rgba(6,12,24,.15) 0%,rgba(6,12,24,.9) 78%);
  min-height:200px;
}
.scene:first-child{grid-row:span 2;min-height:100%}
.scene:first-child .scene-body{min-height:422px;justify-content:flex-end;padding:32px}
.scene-body h3{font-size:18px;margin-bottom:8px}
.scene-body p{font-size:13.5px;color:var(--t2);line-height:1.75;margin:0}

/* ============ S04 三步 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;position:relative}
.steps::before{
  content:"";position:absolute;top:23px;left:8%;right:8%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,214,255,.45),rgba(53,214,255,.45),transparent);
}
.step{position:relative;text-align:center;padding-top:0}
.step-num{
  width:48px;height:48px;border-radius:50%;margin:0 auto 20px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#04121f;font-family:var(--mono);font-weight:700;font-size:16px;
  box-shadow:0 0 0 6px rgba(53,214,255,.1),0 0 34px rgba(53,214,255,.55);
  position:relative;z-index:2;
}
.step h3{font-size:17.5px;margin-bottom:8px}
.step p{font-size:14px;color:var(--t2);margin-bottom:12px}

/* ============ S05 标签页 ============ */
.tabs-panel{
  background:var(--glass);border:1px solid var(--line);border-radius:22px;
  padding:24px;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow);
}
.tab-nav{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px;border-bottom:1px solid var(--line-soft);padding-bottom:16px}
.tab-btn{
  padding:9px 20px;border-radius:999px;font-size:14px;font-weight:600;
  background:rgba(255,255,255,.04);border:1px solid var(--line-soft);
  color:var(--t2);cursor:pointer;transition:all .2s ease;font-family:inherit;
}
.tab-btn:hover{color:var(--t1);border-color:rgba(53,214,255,.4)}
.tab-btn.active{
  color:#04121f;background:linear-gradient(135deg,var(--brand),var(--brand-2));
  border-color:transparent;box-shadow:0 8px 26px rgba(53,214,255,.35);
}
.tab-pane{display:none;grid-template-columns:.85fr 1.15fr;gap:30px;align-items:center}
.tab-pane.active{display:grid;animation:fadeIn .35s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.tab-shot{aspect-ratio:9/14;max-width:290px;border-radius:16px;overflow:hidden;border:1px solid var(--line);box-shadow:0 24px 60px rgba(0,0,0,.5)}
.tab-shot img{width:100%;height:100%;object-fit:cover}
.tab-notes li{
  display:flex;gap:12px;padding:14px 0;border-bottom:1px dashed rgba(140,190,255,.12);
  font-size:14.5px;color:var(--t2);line-height:1.75;
}
.tab-notes li:last-child{border-bottom:0}
.tab-notes li i{color:var(--brand);font-size:13px;margin-top:7px;flex:none}
.tab-notes strong{color:var(--t1);font-weight:600}

/* ============ S06 城市 ============ */
.city-filter{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:26px}
.city-filter span{
  padding:6px 15px;border-radius:999px;font-size:13px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--t2);
}
.city-filter span.on{color:var(--brand);border-color:rgba(53,214,255,.45);background:rgba(53,214,255,.1)}
.city-card{padding:20px;border-radius:16px;text-align:left}
.city-card .cn{font-size:17px;color:var(--t1);font-weight:700;margin-bottom:4px}
.city-card .num{font-family:var(--mono);font-size:12.5px;color:var(--mint);margin-bottom:12px}
.city-card .tags{display:flex;gap:6px;flex-wrap:wrap}

/* ============ S07 案例 ============ */
.story{display:flex;gap:0;flex-direction:column;overflow:hidden;padding:0}
.story-cover{aspect-ratio:16/9}
.story-body{padding:22px}
.story-who{display:flex;align-items:center;gap:11px;margin-bottom:14px}
.avatar{
  width:42px;height:42px;border-radius:50%;flex:none;
  background:linear-gradient(135deg,rgba(53,214,255,.35),rgba(46,230,168,.3));
  border:1px solid rgba(53,214,255,.4);
  display:flex;align-items:center;justify-content:center;
  color:var(--t1);font-weight:700;font-size:15px;
}
.story-who .n{font-size:14.5px;color:var(--t1);font-weight:600;line-height:1.35}
.story-who .c{font-size:12px;color:var(--t3);font-family:var(--mono)}
.story-body p{font-size:14px;color:var(--t2);line-height:1.8;margin-bottom:14px}
.story-body .foot{display:flex;align-items:center;justify-content:space-between;gap:10px}
.story-body .foot a{font-size:13px;font-weight:600}

/* ============ S08 套餐 ============ */
.plans{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:stretch}
.plan{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 22px;display:flex;flex-direction:column;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.plan:hover{transform:translateY(-3px);border-color:rgba(53,214,255,.32)}
.plan-name{font-size:15.5px;color:var(--t1);font-weight:700;margin-bottom:6px}
.plan-price{font-family:var(--mono);font-size:30px;color:var(--t1);line-height:1.2;margin-bottom:2px}
.plan-price small{font-size:13px;color:var(--t3);font-weight:400}
.plan-sub{font-size:12.5px;color:var(--t3);margin-bottom:18px;font-family:var(--mono)}
.plan ul{margin-bottom:22px;flex:1}
.plan ul li{font-size:13.5px;color:var(--t2);padding:7px 0 7px 22px;position:relative;line-height:1.7}
.plan ul li::before{
  content:"";position:absolute;left:0;top:14px;width:11px;height:11px;border-radius:50%;
  background:rgba(46,230,168,.16);border:1px solid rgba(46,230,168,.55);
}
.plan .btn{width:100%}
.plan-hot{
  background:var(--bg-2);border:1px solid rgba(53,214,255,.55);
  transform:translateY(-8px);
  box-shadow:0 0 0 1px rgba(53,214,255,.28),0 24px 64px rgba(53,214,255,.26);
  position:relative;
}
.plan-hot:hover{transform:translateY(-11px)}
.plan-hot .badge-hot{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  padding:4px 15px;border-radius:999px;font-size:12px;font-weight:600;
  color:#04121f;background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 8px 22px rgba(53,214,255,.45);white-space:nowrap;
}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:34px}
.compare-col{padding:24px;border-radius:16px;border:1px solid var(--line);background:rgba(255,255,255,.035)}
.compare-col.free{border-color:rgba(140,190,255,.18)}
.compare-col.vip{border-color:rgba(53,214,255,.4);background:rgba(53,214,255,.06)}
.compare-col h4{font-size:15px;margin-bottom:14px;color:var(--t1)}
.compare-col li{font-size:13.5px;color:var(--t2);padding:6px 0 6px 20px;position:relative}
.compare-col li::before{content:"·";position:absolute;left:6px;top:6px;color:var(--brand);font-weight:700}
.compare-col.free li::before{color:var(--t3)}

/* ============ S09 评价墙 ============ */
.rate-top{
  display:flex;align-items:center;gap:36px;flex-wrap:wrap;
  padding:26px 30px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);margin-bottom:26px;
}
.rate-big{font-family:var(--mono);font-size:52px;line-height:1;color:var(--t1);font-weight:700}
.rate-big span{font-size:20px;color:var(--t3)}
.rate-meta .stars{color:var(--rose);letter-spacing:3px;font-size:15px;margin-bottom:6px}
.rate-meta .cnt{font-size:13px;color:var(--t3);font-family:var(--mono)}
.rate-bars{flex:1;min-width:240px;display:grid;gap:8px}
.rate-bar{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--t3);font-family:var(--mono)}
.rate-bar .track{flex:1;height:6px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden}
.rate-bar .fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--mint))}
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.review{padding:20px;border-radius:15px}
.review .who{display:flex;align-items:center;gap:10px;margin-bottom:11px}
.review .who .avatar{width:34px;height:34px;font-size:13px}
.review .who .n{font-size:13.5px;color:var(--t1);font-weight:600;line-height:1.3}
.review .who .c{font-size:11.5px;color:var(--t3);font-family:var(--mono)}
.review .stars{color:var(--rose);font-size:11px;letter-spacing:2px;margin-bottom:8px}
.review p{font-size:13.5px;color:var(--t2);line-height:1.75;margin:0}

/* ============ S10 口碑 ============ */
.quotes{display:grid;grid-template-columns:1.2fr 1fr;gap:20px}
.quotes .q:first-child{grid-row:span 2}
.quote{
  position:relative;padding:30px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  transition:transform .2s ease,border-color .2s ease;
}
.quote:hover{transform:translateY(-3px);border-color:rgba(53,214,255,.32)}
.quote::before{
  content:"”";position:absolute;top:6px;left:18px;
  font-size:64px;line-height:1;color:rgba(53,214,255,.18);font-family:Georgia,serif;
}
.quote p{position:relative;font-size:14.5px;color:var(--t2);line-height:1.85;margin-bottom:18px;padding-top:14px}
.quote .meta{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.quote .meta .n{font-size:13.5px;color:var(--t1);font-weight:600}

/* ============ S11 安全 ============ */
.safety-list{display:grid;gap:0}
.safety-item{
  display:flex;gap:20px;align-items:flex-start;
  padding:26px 0;border-bottom:1px solid var(--line-soft);
  transition:background .2s ease;
}
.safety-item:last-child{border-bottom:0}
.safety-item .ico{margin-bottom:0;box-shadow:0 0 26px rgba(53,214,255,.28)}
.safety-item h3{font-size:16.5px;margin-bottom:6px}
.safety-item p{font-size:14px;color:var(--t2);margin:0;line-height:1.8}

/* ============ S12 资讯 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{
  display:flex;flex-direction:column;padding:0;overflow:hidden;
  color:inherit;text-decoration:none;
}
.news-card:hover{text-decoration:none;color:inherit}
.news-cover{aspect-ratio:16/10;border-radius:0}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-body .tag{align-self:flex-start;margin-bottom:11px}
.news-body h3{font-size:16.5px;line-height:1.5;margin-bottom:9px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:13.5px;color:var(--t2);line-height:1.75;margin-bottom:16px;flex:1;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body time{font-family:var(--mono);font-size:11.5px;color:var(--t3);letter-spacing:.03em}
.empty-state{
  text-align:center;padding:56px 24px;border-radius:var(--r-card);
  border:1px dashed rgba(140,190,255,.25);background:rgba(255,255,255,.03);
}
.empty-state i{font-size:26px;color:var(--t3);margin-bottom:14px;display:block}
.empty-state p{font-size:14px;color:var(--t3);margin-bottom:18px}

/* ============ S13 FAQ ============ */
.faq{max-width:900px;margin:0 auto}
.faq details{
  border:1px solid var(--line-soft);border-radius:14px;
  background:rgba(255,255,255,.035);margin-bottom:12px;
  transition:border-color .2s ease,background .2s ease;
}
.faq details[open]{border-color:rgba(53,214,255,.34);background:rgba(53,214,255,.05)}
.faq summary{
  list-style:none;cursor:pointer;padding:18px 54px 18px 22px;position:relative;
  font-size:15.5px;color:var(--t1);font-weight:600;line-height:1.6;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-family:var(--mono);font-size:19px;color:var(--brand);
  text-shadow:0 0 14px rgba(53,214,255,.65);transition:transform .22s ease;
}
.faq details[open] summary::after{content:"−";transform:translateY(-50%) rotate(0deg)}
.faq .ans{padding:0 22px 20px;font-size:14px;color:var(--t2);line-height:1.9;animation:fadeIn .3s ease}

/* ============ S14 CTA ============ */
.cta-box{
  max-width:900px;margin:0 auto;text-align:center;padding:56px 40px;
  border-radius:26px;position:relative;overflow:hidden;
  background:linear-gradient(160deg,rgba(53,214,255,.13),rgba(46,230,168,.06) 55%,rgba(255,255,255,.03));
  border:1px solid rgba(53,214,255,.3);
  -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.12),0 30px 80px rgba(0,0,0,.5);
}
.cta-box::before{
  content:"";position:absolute;width:420px;height:420px;border-radius:50%;
  top:-220px;left:50%;transform:translateX(-50%);
  background:radial-gradient(circle,rgba(53,214,255,.3),transparent 68%);
  pointer-events:none;filter:blur(10px);
}
.cta-box h2{font-size:28px;margin-bottom:14px;position:relative}
.cta-box p{font-size:15px;color:var(--t2);margin-bottom:28px;position:relative}
.cta-actions{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap;position:relative}
.qr{
  width:104px;height:104px;border-radius:14px;flex:none;
  border:1px solid var(--line);background:rgba(255,255,255,.06);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  font-size:10.5px;color:var(--t3);font-family:var(--mono);
}
.qr i{font-size:26px;color:var(--brand);opacity:.85}
.cta-note{margin-top:22px;font-family:var(--mono);font-size:11.5px;color:var(--t3);position:relative}

/* ============ 页脚 ============ */
.site-footer{background:#04090f;border-top:1px solid var(--line-soft);padding:64px 0 0;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:48px}
.foot-brand .logo{margin-bottom:16px}
.foot-brand p{font-size:13.5px;color:var(--t3);line-height:1.85;max-width:30em}
.foot-col h5{font-size:13px;color:var(--t1);margin:0 0 16px;font-weight:700;letter-spacing:.04em}
.foot-col a{display:block;font-size:13.5px;color:var(--t3);padding:5px 0;transition:color .2s ease,transform .2s ease}
.foot-col a:hover{color:var(--brand);transform:translateX(3px);text-decoration:none}
.foot-bottom{
  border-top:1px solid var(--line-soft);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--t3);
}
.foot-bottom .links{display:flex;gap:18px;flex-wrap:wrap}
.foot-bottom .links a{color:var(--t3);font-size:12.5px}
.foot-bottom .links a:hover{color:var(--brand);text-decoration:none}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .wrap{padding:0 28px}
  .header-inner{padding:0 28px;gap:14px}
  .hero-inner{grid-template-columns:1fr;gap:44px}
  .hero h1{font-size:38px;max-width:none}
  .g-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .plans{grid-template-columns:repeat(2,1fr)}
  .plan-hot{transform:none}
  .plan-hot:hover{transform:translateY(-3px)}
  .news-grid,.reviews{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:1023px){
  .nav-main,.head-search,.head-meta{display:none}
  .menu-toggle{display:flex}
  .head-cta{padding:9px 16px;font-size:13px}
  .section{padding:72px 0}
  .hero{padding:60px 0 68px}
  .scene-grid{grid-template-columns:1fr}
  .scene:first-child{grid-row:auto}
  .scene:first-child .scene-body{min-height:240px}
  .steps{grid-template-columns:1fr;gap:20px}
  .steps::before{display:none}
  .step{text-align:left;display:grid;grid-template-columns:48px 1fr;gap:16px;align-items:start}
  .step-num{margin:0}
  .step-body{grid-column:2}
  .tab-pane{grid-template-columns:1fr}
  .tab-shot{max-width:230px;margin:0 auto}
  .quotes{grid-template-columns:1fr}
  .quotes .q:first-child{grid-row:auto}
  .compare{grid-template-columns:1fr}
  h1{font-size:32px}
  h2{font-size:25px}
}
@media (max-width:767px){
  .wrap{padding:0 18px}
  .header-inner{padding:0 18px;height:62px}
  .logo-text span:last-child{display:none}
  .head-cta{display:none}
  .section{padding:56px 0}
  .hero h1{font-size:29px}
  .hero-lead{font-size:15px}
  .hero-actions .btn{width:100%}
  .g-2,.g-3,.g-4,.plans,.news-grid,.reviews{grid-template-columns:1fr}
  .plan-hot{transform:none}
  .compare{grid-template-columns:1fr}
  .rate-top{gap:20px;padding:22px}
  .rate-big{font-size:42px}
  .cta-box{padding:38px 22px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
  .card:hover,.news-card:hover,.quote:hover,.plan:hover{transform:none}
  .card:active,.news-card:active{transform:scale(.99)}
  body{font-size:15px}
  h3{font-size:17px}
  .tab-btn{padding:8px 15px;font-size:13px}
}

/* roulang page: article */
:root{
  --bg-0:#060c18;
  --bg-1:#0a1428;
  --bg-2:#0e1c36;
  --brand:#35d6ff;
  --brand-2:#6be8ff;
  --mint:#2ee6a8;
  --rose:#ff5f8f;
  --t1:#e9f2ff;
  --t2:#a9bcd8;
  --t3:#6f83a3;
  --glass:rgba(255,255,255,.055);
  --glass-2:rgba(255,255,255,.09);
  --line:rgba(140,190,255,.16);
  --line-soft:rgba(140,190,255,.09);
  --r-card:18px;
  --r-img:14px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:96px}
body{
  margin:0;background:var(--bg-0);color:var(--t2);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--mint);text-decoration:underline;text-underline-offset:3px}
button{font-family:inherit}
h1,h2,h3,h4,h5{margin:0;color:var(--t1);font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.wrap{max-width:1200px;margin:0 auto;padding:0 32px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:300;background:rgba(6,12,24,.78);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line-soft);
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.scrolled{background:rgba(6,12,24,.95);border-bottom-color:var(--line);box-shadow:0 12px 40px rgba(0,0,0,.45)}
.header-inner{max-width:1200px;margin:0 auto;padding:0 32px;height:70px;display:flex;align-items:center;gap:14px}
.logo{display:flex;align-items:center;gap:10px;color:var(--t1);font-size:15.5px;font-weight:700;white-space:nowrap;flex:none}
.logo:hover{text-decoration:none;color:var(--t1)}
.logo-mark{
  width:32px;height:32px;border-radius:10px;flex:none;position:relative;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 0 0 1px rgba(53,214,255,.45),0 8px 24px rgba(53,214,255,.35);
}
.logo-mark::after{content:"";position:absolute;inset:9px;border-radius:50%;background:#04121f;opacity:.92}
.logo-mark::before{content:"";position:absolute;inset:13px;border-radius:50%;background:var(--mint);opacity:.9}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text span:first-child{font-size:15px;color:var(--t1)}
.logo-text span:last-child{font-size:11px;color:var(--t3);font-family:var(--mono);letter-spacing:.06em;font-weight:500}
.nav-main{display:flex;align-items:center;gap:2px;margin-left:4px;min-width:0}
.nav-main a{
  display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border-radius:10px;
  font-size:14px;font-weight:500;color:var(--t2);white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.nav-main a:hover{color:var(--t1);background:rgba(255,255,255,.06);text-decoration:none}
.nav-main a.active{color:var(--brand);background:rgba(53,214,255,.1);box-shadow:inset 0 0 0 1px rgba(53,214,255,.22)}
.nav-main a i{font-size:12px;opacity:.75}
.head-tools{display:flex;align-items:center;gap:8px;margin-left:auto;flex:none}
.head-search{position:relative}
.head-search>i{position:absolute;left:13px;top:50%;transform:translateY(-50%);font-size:12.5px;color:var(--t3);pointer-events:none}
.head-search input{
  width:170px;height:36px;border-radius:999px;background:var(--glass);border:1px solid var(--line);
  color:var(--t1);font-size:13px;font-family:inherit;padding:0 14px 0 34px;
  transition:width .25s ease,border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.head-search input::placeholder{color:var(--t3)}
.head-search input:focus{outline:none;width:212px;border-color:var(--brand);background:rgba(53,214,255,.07);box-shadow:0 0 0 3px rgba(53,214,255,.14)}
.search-panel{
  position:absolute;top:46px;left:0;width:288px;padding:10px;border-radius:14px;
  background:rgba(10,20,40,.97);border:1px solid var(--line);box-shadow:var(--shadow);
  -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  display:none;z-index:20;
}
.search-panel.open{display:block}
.search-panel h6{font-size:11px;color:var(--t3);font-family:var(--mono);letter-spacing:.1em;margin:4px 6px 8px}
.search-panel a{display:block;padding:8px 10px;border-radius:9px;font-size:13.5px;color:var(--t2)}
.search-panel a:hover{background:rgba(53,214,255,.1);color:var(--brand);text-decoration:none}
.chip-link{
  display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 11px;border-radius:9px;
  border:1px solid var(--line-soft);background:rgba(255,255,255,.03);cursor:pointer;
  font-family:var(--mono);font-size:11.5px;color:var(--t3);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.chip-link:hover{color:var(--brand);border-color:rgba(53,214,255,.4);background:rgba(53,214,255,.08)}
.head-cta{padding:9px 18px;font-size:13.5px}
.menu-toggle{
  display:none;width:42px;height:38px;border-radius:11px;border:1px solid var(--line);
  background:var(--glass);color:var(--t1);font-size:16px;cursor:pointer;
  align-items:center;justify-content:center;transition:border-color .2s ease,color .2s ease;
}
.menu-toggle:hover{border-color:var(--brand);color:var(--brand)}

/* 抽屉 */
.drawer{
  position:fixed;top:0;right:0;height:100%;width:320px;max-width:88vw;
  background:rgba(10,20,40,.97);-webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px);
  border-left:1px solid var(--line);z-index:400;padding:22px 20px;overflow-y:auto;
  transform:translateX(105%);transition:transform .32s cubic-bezier(.4,0,.2,1);
}
body.drawer-open .drawer{transform:translateX(0)}
body.drawer-open{overflow:hidden}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:transparent;color:var(--t2);font-size:15px;cursor:pointer;float:right}
.drawer-close:hover{color:var(--brand);border-color:var(--brand)}
.drawer h4{font-size:12px;font-family:var(--mono);color:var(--t3);letter-spacing:.1em;margin:26px 0 10px}
.drawer-nav a{display:block;padding:12px 14px;border-radius:11px;color:var(--t2);font-size:15px;font-weight:500;border:1px solid transparent}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--brand);background:rgba(53,214,255,.08);border-color:rgba(53,214,255,.24);text-decoration:none}
.drawer-search{display:flex;align-items:center;gap:8px;background:var(--glass);border:1px solid var(--line);border-radius:12px;padding:0 12px;height:42px}
.drawer-search i{color:var(--t3);font-size:13px}
.drawer-search input{flex:1;background:none;border:0;color:var(--t1);font-size:14px;height:100%;font-family:inherit}
.drawer-search input:focus{outline:none}
.drawer .btn{width:100%;margin-top:14px}
.drawer-pill{display:inline-flex;margin:6px 6px 0 0;padding:7px 12px;border-radius:9px;border:1px solid var(--line-soft);font-family:var(--mono);font-size:11.5px;color:var(--t3)}

/* ============ 按钮与徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;cursor:pointer;
  font-family:inherit;font-weight:600;font-size:15px;padding:13px 26px;border-radius:999px;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  text-decoration:none;white-space:nowrap;
}
.btn:hover{text-decoration:none}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#04121f;
  box-shadow:0 0 0 1px rgba(53,214,255,.55),0 10px 32px rgba(53,214,255,.35);
}
.btn-primary:hover{color:#04121f;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(53,214,255,.7),0 16px 44px rgba(53,214,255,.5)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.94)}
.btn-ghost{
  background:var(--glass);color:var(--t1);border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.btn-ghost:hover{color:var(--brand);border-color:rgba(53,214,255,.55);background:rgba(53,214,255,.08);transform:translateY(-2px)}
.btn:focus-visible,.chip-link:focus-visible,.menu-toggle:focus-visible,.toc-list a:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.btn-sm{padding:9px 18px;font-size:13.5px}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;font-size:12px;font-weight:500;line-height:1.7}
.badge-mint{color:var(--mint);background:rgba(46,230,168,.1);border:1px solid rgba(46,230,168,.3)}
.badge-brand{color:var(--brand);background:rgba(53,214,255,.1);border:1px solid rgba(53,214,255,.3)}
.badge-rose{color:var(--rose);background:rgba(255,95,143,.1);border:1px solid rgba(255,95,143,.28)}

/* ============ 面包屑 ============ */
.crumb-bar{background:var(--bg-1);border-bottom:1px solid var(--line-soft)}
.crumb-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:52px;flex-wrap:wrap;padding-top:8px;padding-bottom:8px}
.crumb-inner nav{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t3);flex-wrap:wrap}
.crumb-inner nav a{color:var(--t2)}
.crumb-inner nav a:hover{color:var(--brand)}
.crumb-inner nav .sep{color:var(--t3);opacity:.55}
.crumb-inner nav .current{color:var(--t3);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.crumb-note{font-size:11.5px;color:var(--t3);letter-spacing:.08em}

/* ============ 文章头部 ============ */
.article-hero{padding:56px 0 48px;position:relative;background:radial-gradient(900px 420px at 18% -10%,rgba(53,214,255,.14),transparent 70%),var(--bg-0)}
.article-hero::after{content:"";position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(rgba(140,190,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(140,190,255,.05) 1px,transparent 1px);background-size:64px 64px;mask-image:radial-gradient(circle at 50% 0%,#000,transparent 72%);-webkit-mask-image:radial-gradient(circle at 50% 0%,#000,transparent 72%);opacity:.5}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:44px;align-items:start;position:relative;z-index:2}
.article-hero h1{font-size:40px;line-height:1.24;margin:16px 0 16px;word-break:break-word}
.lede{font-size:16.5px;color:var(--t2);max-width:64ch}
.meta-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:24px}
.meta-item{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--t3);font-family:var(--mono);padding:5px 11px;border-radius:999px;border:1px solid var(--line-soft);background:rgba(255,255,255,.03)}
.meta-item i{color:var(--brand);font-size:11.5px}
.share-group{display:flex;align-items:center;gap:6px;margin-left:4px}
.share-btn{width:32px;height:32px;border-radius:9px;border:1px solid var(--line-soft);background:rgba(255,255,255,.03);color:var(--t3);font-size:12.5px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:.2s ease}
.share-btn:hover{color:var(--brand);border-color:rgba(53,214,255,.45);background:rgba(53,214,255,.09)}
.hero-side{padding:22px;border-radius:var(--r-card);background:var(--glass);border:1px solid var(--line);box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}
.hero-side h4{font-size:12px;font-family:var(--mono);letter-spacing:.1em;color:var(--t3);margin-bottom:14px}
.side-list li{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px dashed var(--line-soft);font-size:13.5px}
.side-list li:last-child{border-bottom:0}
.side-list b{color:var(--t1);font-weight:600;font-family:var(--mono);font-size:13px;text-align:right}
.side-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px}
.side-tags span{font-size:11.5px;padding:3px 9px;border-radius:999px;color:var(--brand);background:rgba(53,214,255,.09);border:1px solid rgba(53,214,255,.24)}

/* ============ 文章主体双栏 ============ */
.article-section{padding:56px 0 88px;background:var(--bg-0);border-top:1px solid var(--line-soft)}
.article-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:48px;align-items:start}
.doc-side{position:sticky;top:92px;max-height:calc(100vh - 118px);overflow-y:auto;padding:18px 14px 18px 0;border-right:1px solid var(--line-soft)}
.doc-side-head{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:11.5px;font-family:var(--mono);letter-spacing:.1em;color:var(--t3);padding-bottom:12px;border-bottom:1px solid var(--line-soft);margin-bottom:12px}
.toc-toggle{display:none;border:1px solid var(--line-soft);background:rgba(255,255,255,.04);color:var(--brand);border-radius:8px;font-size:11px;padding:4px 9px;cursor:pointer}
.toc-list a{
  display:block;padding:7px 10px 7px 12px;border-radius:9px;font-size:13.5px;color:var(--t2);
  border-left:3px solid transparent;transition:.2s ease;line-height:1.6;
}
.toc-list a:hover{color:var(--t1);background:rgba(255,255,255,.05);text-decoration:none}
.toc-list a.active{color:var(--brand);background:rgba(53,214,255,.08);border-left-color:var(--brand);box-shadow:inset 0 0 12px rgba(53,214,255,.18)}
.toc-list li.lv3 a{padding-left:26px;font-size:12.8px;color:var(--t3)}
.doc-side-foot{margin-top:16px;padding-top:14px;border-top:1px solid var(--line-soft);font-size:12px;color:var(--t3);line-height:1.8}

/* ============ 正文 ============ */
.article-main{min-width:0;max-width:760px}
.keypoints{
  padding:22px 24px;border-radius:var(--r-card);margin-bottom:34px;
  background:var(--glass);border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 16px 44px rgba(0,0,0,.3);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
}
.keypoints h3{font-size:15px;color:var(--t1);display:flex;align-items:center;gap:8px;margin-bottom:12px}
.keypoints h3 i{color:var(--mint);font-size:13px}
.keypoints ul li{position:relative;padding-left:20px;font-size:14.5px;color:var(--t2);margin:8px 0;line-height:1.8}
.keypoints ul li::before{content:"";position:absolute;left:2px;top:.78em;width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(53,214,255,.85)}
.article-body{font-size:16px;line-height:1.9;color:var(--t2)}
.article-body h2{font-size:26px;line-height:1.35;margin:44px 0 16px;padding-left:16px;position:relative;color:var(--t1)}
.article-body h2::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;border-radius:3px;background:var(--brand);box-shadow:0 0 12px rgba(53,214,255,.8)}
.article-body h3{font-size:19px;margin:30px 0 12px;color:var(--t1)}
.article-body h4{font-size:16px;margin:24px 0 10px;color:var(--t1)}
.article-body p{margin:0 0 1.2em}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(53,214,255,.35)}
.article-body a:hover{color:var(--mint);border-bottom-color:rgba(46,230,168,.5);text-decoration:none}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.45em}
.article-body ul li{list-style:disc;margin:.45em 0}
.article-body ol li{list-style:decimal;margin:.45em 0}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;border-radius:0 14px 14px 0;
  background:var(--glass);border-left:3px solid var(--brand);
  color:var(--t1);box-shadow:inset 0 1px 0 rgba(255,255,255,.07);font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:22px 0;box-shadow:var(--shadow)}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--t3);text-align:center;margin-top:8px;line-height:1.7}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px;border-radius:12px;overflow:hidden}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 13px;text-align:left}
.article-body th{background:rgba(53,214,255,.09);color:var(--t1);font-weight:600}
.article-body code{font-family:var(--mono);background:rgba(53,214,255,.1);color:var(--brand-2);padding:2px 6px;border-radius:6px;font-size:13.5px}
.article-body strong{color:var(--t1)}
.article-body hr{border:0;height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent);margin:36px 0}
.empty-box{
  padding:44px 28px;text-align:center;border-radius:var(--r-card);
  background:var(--glass);border:1px dashed var(--line);color:var(--t2);
}
.empty-box i{font-size:26px;color:var(--t3);display:block;margin-bottom:12px}
.empty-box strong{display:block;color:var(--t1);font-size:17px;margin-bottom:8px}
.empty-box .btn{margin-top:18px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:34px;padding-top:24px;border-top:1px solid var(--line-soft)}
.tag-row .tag{font-size:12.5px;padding:5px 12px;border-radius:999px;color:var(--t2);background:rgba(255,255,255,.04);border:1px solid var(--line-soft);transition:.2s ease}
.tag-row .tag:hover{color:var(--brand);border-color:rgba(53,214,255,.4);text-decoration:none}

/* ============ 相关推荐 ============ */
.related-sec{padding:80px 0;background:var(--bg-1);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:32px}
.sec-head h2{font-size:28px;line-height:1.3}
.sec-head p{font-size:14.5px;color:var(--t3);margin-top:8px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.post-card{
  display:flex;flex-direction:column;border-radius:var(--r-card);overflow:hidden;
  background:var(--glass);border:1px solid var(--line);color:var(--t2);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.post-card:hover{text-decoration:none;color:var(--t2);transform:translateY(-3px);border-color:rgba(53,214,255,.42);box-shadow:0 18px 46px rgba(0,0,0,.45)}
.post-cover{aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;opacity:.92}
.post-card:hover .post-cover img{transform:scale(1.05)}
.post-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-body h3{font-size:16.5px;line-height:1.5;color:var(--t1);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-body p{font-size:13.8px;color:var(--t3);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;font-family:var(--mono);font-size:11.5px;color:var(--t3)}

/* ============ 下载 CTA 窄条 ============ */
.cta-strip{padding:0;background:var(--bg-0)}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  margin:64px auto;padding:30px 34px;border-radius:var(--r-card);
  background:linear-gradient(120deg,rgba(53,214,255,.14),rgba(46,230,168,.06) 60%,transparent),var(--bg-2);
  border:1px solid rgba(53,214,255,.28);box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 22px 60px rgba(0,0,0,.42);
}
.cta-inner h2{font-size:22px;line-height:1.35;margin-bottom:8px}
.cta-inner p{font-size:14.5px;color:var(--t2)}
.cta-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.qr-box{
  width:82px;height:82px;border-radius:14px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:3px;background:rgba(255,255,255,.06);
  border:1px solid var(--line);color:var(--t3);font-size:10.5px;font-family:var(--mono);
}
.qr-box i{font-size:22px;color:var(--brand)}

/* ============ 上下篇 ============ */
.pn-sec{padding:0 0 88px;background:var(--bg-0)}
.pn-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.pn-card{
  display:block;padding:22px 24px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);color:var(--t2);
  transition:.22s ease;box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.pn-card:hover{text-decoration:none;color:var(--t2);transform:translateY(-3px);border-color:rgba(53,214,255,.42);box-shadow:0 18px 46px rgba(0,0,0,.42)}
.pn-label{display:block;font-size:11.5px;font-family:var(--mono);letter-spacing:.1em;color:var(--t3);margin-bottom:8px}
.pn-card strong{display:block;font-size:16.5px;color:var(--t1);line-height:1.5;font-weight:600}
.pn-card strong i{color:var(--brand);font-size:13px;margin-right:6px}
.back-row{text-align:center;margin-top:28px;font-size:14px}
.back-row a{color:var(--t2);border-bottom:1px dashed rgba(53,214,255,.4);padding-bottom:2px}
.back-row a:hover{color:var(--brand);text-decoration:none}

/* ============ 弹层 ============ */
.modal{
  position:fixed;inset:0;z-index:500;display:none;align-items:center;justify-content:center;
  padding:24px;background:rgba(3,7,14,.72);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.modal.open{display:flex}
.modal-card{
  width:100%;max-width:420px;padding:26px;border-radius:18px;
  background:rgba(14,28,54,.98);border:1px solid var(--line);box-shadow:var(--shadow);
}
.modal-card h3{font-size:18px;margin-bottom:8px}
.modal-card p{font-size:14px;color:var(--t3);margin-bottom:16px}
.modal-card ul li{font-size:14px;color:var(--t2);padding:8px 0;border-bottom:1px dashed var(--line-soft);display:flex;justify-content:space-between;gap:12px}
.modal-card ul li:last-child{border-bottom:0}
.modal-card ul li span{font-family:var(--mono);font-size:12.5px;color:var(--brand)}
.modal-close{margin-top:18px;width:100%}

/* ============ 页脚 ============ */
.site-footer{background:#040a14;border-top:1px solid var(--line-soft);padding:64px 0 26px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.foot-brand p{font-size:14px;color:var(--t3);line-height:1.85;margin-top:16px;max-width:34ch}
.foot-col h5{font-size:13.5px;color:var(--t1);margin-bottom:14px;letter-spacing:.02em}
.foot-col a{display:block;font-size:13.8px;color:var(--t3);padding:5px 0}
.foot-col a:hover{color:var(--brand);text-decoration:none}
.foot-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:44px;padding-top:20px;border-top:1px solid var(--line-soft);font-size:12.5px;color:var(--t3);font-family:var(--mono)}
.foot-bottom .links{display:flex;align-items:center;gap:18px}
.foot-bottom .links a{color:var(--t3);font-size:12.5px}
.foot-bottom .links a:hover{color:var(--brand);text-decoration:none}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .head-search{display:none}
}
@media (max-width:1199px){
  .wrap,.header-inner{padding-left:32px;padding-right:32px}
  .hero-grid{grid-template-columns:minmax(0,1fr) 268px;gap:32px}
  .article-layout{grid-template-columns:220px minmax(0,1fr);gap:36px}
  .article-hero h1{font-size:36px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .foot-col:last-child{grid-column:span 3}
}
@media (max-width:1100px){
  .chip-link{display:none}
}
@media (max-width:1023px){
  .nav-main{display:none}
  .menu-toggle{display:inline-flex}
  .head-search,.chip-link{display:none}
  .header-inner{height:64px}
  .article-hero{padding:40px 0 36px}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .doc-side{position:static;max-height:none;overflow:visible;border-right:0;border:1px solid var(--line);border-radius:14px;padding:14px 16px;margin-bottom:28px;background:var(--glass)}
  .doc-side-head{margin-bottom:0;padding-bottom:0;border-bottom:0}
  .toc-toggle{display:inline-block}
  .toc-list{display:none;margin-top:12px;padding-top:10px;border-top:1px solid var(--line-soft)}
  .doc-side.open .toc-list{display:block}
  .doc-side-foot{display:none}
  .article-main{max-width:100%}
  .related-sec{padding:64px 0}
  .pn-sec{padding-bottom:64px}
}
@media (max-width:767px){
  .wrap,.header-inner{padding-left:18px;padding-right:18px}
  .article-hero h1{font-size:29px;line-height:1.3}
  .lede{font-size:15.5px}
  .article-body{font-size:15px;line-height:1.85}
  .article-body h2{font-size:22px;margin-top:34px}
  .article-body h3{font-size:17.5px}
  .sec-head h2{font-size:22px}
  .grid-3{grid-template-columns:minmax(0,1fr)}
  .pn-grid{grid-template-columns:minmax(0,1fr)}
  .cta-inner{padding:24px 22px;margin:44px auto;border-radius:16px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .qr-box{display:none}
  .foot-grid{grid-template-columns:1fr 1fr;gap:26px}
  .foot-col:last-child{grid-column:span 2}
  .foot-brand{grid-column:span 2}
  .foot-bottom{justify-content:flex-start;font-size:11.5px}
  .crumb-inner nav .current{max-width:30ch}
  .article-hero{padding:32px 0 28px}
  .article-section{padding:36px 0 64px}
  .post-card:hover{transform:scale(.99)}
  .btn:active{transform:scale(.99)}
}
@media (max-width:519px){
  .article-hero h1{font-size:26px}
  .hero-side{padding:18px}
  .foot-grid{grid-template-columns:1fr}
  .foot-col:last-child,.foot-brand{grid-column:span 1}
  .head-cta{display:none}
}

/* roulang page: category1 */
:root{
  --bg-0:#060c18;
  --bg-1:#0a1428;
  --bg-2:#0e1c36;
  --brand:#35d6ff;
  --brand-2:#6be8ff;
  --mint:#2ee6a8;
  --rose:#ff5f8f;
  --t1:#e9f2ff;
  --t2:#a9bcd8;
  --t3:#6f83a3;
  --glass:rgba(255,255,255,.055);
  --glass-2:rgba(255,255,255,.09);
  --line:rgba(140,190,255,.16);
  --line-soft:rgba(140,190,255,.09);
  --r-card:18px;
  --r-img:14px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:
    radial-gradient(900px 520px at 10% -6%, rgba(53,214,255,.10), transparent 70%),
    radial-gradient(760px 440px at 94% 2%, rgba(46,230,168,.055), transparent 72%),
    var(--bg-0);
  background-attachment:fixed;
  color:var(--t2);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--mint);text-decoration:underline;text-underline-offset:3px}
button{font-family:inherit}
p{margin:0 0 1em}
h1,h2,h3,h4,h5{margin:0;color:var(--t1);font-weight:700;line-height:1.35}
ul,ol{margin:0 0 1em;padding-left:1.2em}
.mono{font-family:var(--mono)}
.wrap{max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:300;
  background:rgba(6,12,24,.78);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line-soft);
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.scrolled{background:rgba(6,12,24,.94);border-bottom-color:var(--line);box-shadow:0 12px 40px rgba(0,0,0,.45)}
.header-inner{
  max-width:1200px;margin:0 auto;padding:0 32px;
  height:70px;display:flex;align-items:center;gap:16px;
}
.logo{display:flex;align-items:center;gap:10px;color:var(--t1);font-size:15.5px;font-weight:700;white-space:nowrap;flex:none}
.logo:hover{text-decoration:none;color:var(--t1)}
.logo-mark{
  width:32px;height:32px;border-radius:10px;flex:none;position:relative;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 0 0 1px rgba(53,214,255,.45),0 8px 24px rgba(53,214,255,.35);
}
.logo-mark::after{content:"";position:absolute;inset:9px;border-radius:50%;background:#04121f;opacity:.92}
.logo-mark::before{content:"";position:absolute;inset:13px;border-radius:50%;background:var(--mint);opacity:.9}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text span:first-child{font-size:15px;color:var(--t1)}
.logo-text span:last-child{font-size:11px;color:var(--t3);font-family:var(--mono);letter-spacing:.06em;font-weight:500}
.nav-main{display:flex;align-items:center;gap:2px;margin-left:4px}
.nav-main a{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 13px;border-radius:10px;
  font-size:14.5px;font-weight:500;color:var(--t2);
  transition:background .2s ease,color .2s ease;
}
.nav-main a:hover{color:var(--t1);background:rgba(255,255,255,.06);text-decoration:none}
.nav-main a.active{color:var(--brand);background:rgba(53,214,255,.1);box-shadow:inset 0 0 0 1px rgba(53,214,255,.22)}
.nav-main a i{font-size:12px;opacity:.75}
.head-search{position:relative;margin-left:auto}
.head-search>i{position:absolute;left:13px;top:50%;transform:translateY(-50%);font-size:12.5px;color:var(--t3);pointer-events:none}
.head-search input{
  width:186px;height:36px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);
  color:var(--t1);font-size:13px;font-family:inherit;
  padding:0 14px 0 34px;
  transition:width .25s ease,border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.head-search input::placeholder{color:var(--t3)}
.head-search input:focus{
  outline:none;width:224px;border-color:var(--brand);
  background:rgba(53,214,255,.07);
  box-shadow:0 0 0 3px rgba(53,214,255,.14);
}
.search-panel{
  position:absolute;right:0;top:46px;width:268px;
  background:rgba(12,24,44,.97);
  -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  border:1px solid var(--line);border-radius:14px;
  padding:8px;box-shadow:var(--shadow);z-index:320;
}
.search-panel[hidden]{display:none}
.search-panel a{display:block;padding:9px 12px;border-radius:9px;font-size:13.5px;color:var(--t2)}
.search-panel a:hover{background:rgba(53,214,255,.1);color:var(--brand);text-decoration:none}
.head-meta{display:flex;align-items:center;gap:6px}
.chip-link{
  display:inline-flex;align-items:center;gap:6px;
  height:32px;padding:0 11px;border-radius:9px;
  border:1px solid var(--line-soft);background:rgba(255,255,255,.03);
  font-family:var(--mono);font-size:11.5px;color:var(--t3);cursor:pointer;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.chip-link:hover{color:var(--brand);border-color:rgba(53,214,255,.4);background:rgba(53,214,255,.08);text-decoration:none}
.head-cta{padding:10px 20px;font-size:14px}
.menu-toggle{
  display:none;width:42px;height:38px;border-radius:11px;
  border:1px solid var(--line);background:var(--glass);
  color:var(--t1);font-size:16px;cursor:pointer;
  align-items:center;justify-content:center;
  transition:border-color .2s ease,color .2s ease;
}
.menu-toggle:hover{border-color:var(--brand);color:var(--brand)}

/* 抽屉 */
.drawer{
  position:fixed;top:0;right:0;height:100%;width:320px;max-width:88vw;
  background:rgba(10,20,40,.96);
  -webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px);
  border-left:1px solid var(--line);
  z-index:400;padding:22px 20px;overflow-y:auto;
  transform:translateX(105%);transition:transform .32s cubic-bezier(.4,0,.2,1);
}
body.drawer-open .drawer{transform:translateX(0)}
body.drawer-open{overflow:hidden}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
  background:transparent;color:var(--t2);font-size:15px;cursor:pointer;float:right;
}
.drawer-close:hover{color:var(--brand);border-color:var(--brand)}
.drawer h4{font-size:12px;font-family:var(--mono);color:var(--t3);letter-spacing:.1em;margin:26px 0 10px;text-transform:uppercase;font-weight:600}
.drawer-nav a{
  display:block;padding:12px 14px;border-radius:11px;color:var(--t2);
  font-size:15px;font-weight:500;border:1px solid transparent;
}
.drawer-nav a:hover,.drawer-nav a.active{
  color:var(--brand);background:rgba(53,214,255,.08);border-color:rgba(53,214,255,.24);text-decoration:none;
}
.drawer-search{display:flex;align-items:center;gap:8px;background:var(--glass);border:1px solid var(--line);border-radius:12px;padding:0 12px;height:42px}
.drawer-search i{color:var(--t3);font-size:13px}
.drawer-search input{flex:1;background:none;border:0;color:var(--t1);font-size:14px;height:100%;font-family:inherit}
.drawer-search input:focus{outline:none}
.drawer .btn{width:100%;margin-top:14px}
.drawer-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;cursor:pointer;font-family:inherit;font-weight:600;
  font-size:15px;padding:13px 26px;border-radius:999px;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  text-decoration:none;white-space:nowrap;
}
.btn:hover{text-decoration:none}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#04121f;
  box-shadow:0 0 0 1px rgba(53,214,255,.55),0 10px 32px rgba(53,214,255,.35);
}
.btn-primary:hover{
  color:#04121f;transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(53,214,255,.7),0 16px 44px rgba(53,214,255,.5);
}
.btn-primary:active{transform:translateY(1px);filter:brightness(.94)}
.btn-ghost{
  background:rgba(255,255,255,.045);color:var(--t1);
  border:1px solid var(--line);
}
.btn-ghost:hover{color:var(--brand);border-color:rgba(53,214,255,.6);background:rgba(53,214,255,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{font-size:13.5px;padding:10px 20px}
.btn:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,button:focus-visible{
  outline:2px solid var(--brand);outline-offset:3px;
}
.badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:3px 10px;border-radius:999px;font-size:12px;font-weight:500;line-height:1.7;
  border:1px solid transparent;
}
.badge-mint{color:var(--mint);background:rgba(46,230,168,.1);border-color:rgba(46,230,168,.32)}
.badge-brand{color:var(--brand);background:rgba(53,214,255,.1);border-color:rgba(53,214,255,.32)}
.badge-rose{color:var(--rose);background:rgba(255,95,143,.1);border-color:rgba(255,95,143,.3)}

/* ============ 布局骨架 ============ */
.page-shell{
  max-width:1200px;margin:0 auto;
  padding:30px 32px 10px;
  display:grid;grid-template-columns:240px minmax(0,1fr);gap:30px;
  align-items:start;
}
.doc-sidebar{position:sticky;top:92px}
.toc-card{
  background:var(--glass);border:1px solid var(--line-soft);border-radius:16px;
  padding:18px 14px;box-shadow:var(--shadow);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
}
.toc-title{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;color:var(--t3);
  text-transform:uppercase;margin:0 0 12px;padding-left:10px;display:flex;align-items:center;gap:7px;
}
.toc{display:flex;flex-direction:column;gap:2px}
.toc a{
  display:block;padding:8px 10px;border-radius:9px;
  font-size:13.8px;color:var(--t2);border-left:3px solid transparent;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.toc a:hover{color:var(--t1);background:rgba(255,255,255,.05);text-decoration:none}
.toc a.toc-l2{padding-left:24px;font-size:13px;color:var(--t3)}
.toc a.active{
  color:var(--brand);background:rgba(53,214,255,.08);
  border-left-color:var(--brand);
  box-shadow:-3px 0 16px rgba(53,214,255,.45);
}
.doc-main{min-width:0}
.toc-mobile{display:none;margin-bottom:16px}
.toc-mobile summary{
  list-style:none;cursor:pointer;padding:12px 16px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);color:var(--t1);
  font-size:14px;display:flex;justify-content:space-between;align-items:center;
}
.toc-mobile summary::-webkit-details-marker{display:none}
.toc-mobile summary::after{content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:11px;color:var(--brand)}
.toc-mobile[open] summary::after{content:"\f077"}
.toc-mobile .toc{padding:10px 8px 4px}

/* ============ 板块通用 ============ */
.block{
  position:relative;
  padding:42px 36px;
  border-radius:20px;
  border:1px solid var(--line-soft);
  background:rgba(255,255,255,.022);
  margin-bottom:24px;
}
.block.alt{background:rgba(10,20,40,.6);border-color:var(--line)}
.block:last-child{margin-bottom:0}
.sec-head{margin-bottom:26px;max-width:780px}
.sec-head h2{font-size:26px;margin-bottom:8px}
.sec-head h2 .hl{color:var(--brand)}
.sec-head p{margin:0;font-size:14.5px;color:var(--t3)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.16em;
  color:var(--brand);text-transform:uppercase;margin-bottom:10px;
}
.eyebrow::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--brand);
  box-shadow:0 0 10px rgba(53,214,255,.9);
}

/* C01 分类页头 */
.cat-head{
  position:relative;overflow:hidden;
  border-radius:22px;border:1px solid var(--line);
  background-image:linear-gradient(115deg,rgba(6,12,24,.95) 12%,rgba(10,20,40,.82) 62%,rgba(14,28,54,.7)),url('/assets/images/e199e07fce48934d.webp');
  background-size:cover;background-position:center;
  padding:32px 36px;
  margin-bottom:24px;
  box-shadow:var(--shadow);
}
.cat-head-inner{display:grid;grid-template-columns:minmax(0,1fr) 268px;gap:28px;align-items:center}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--t3);margin-bottom:12px;font-family:var(--mono)}
.breadcrumb a{color:var(--t3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .current{color:var(--t2)}
.cat-head h1{font-size:clamp(25px,2.6vw,33px);line-height:1.32;margin-bottom:12px;letter-spacing:-.01em}
.cat-desc{margin:0;font-size:14.8px;color:var(--t2);max-width:640px}
.cat-stats{
  display:grid;grid-template-columns:1fr 1fr;gap:10px;
}
.stat{
  background:rgba(255,255,255,.055);
  border:1px solid var(--line-soft);border-radius:14px;
  padding:14px 14px 12px;
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.stat-num{display:block;font-family:var(--mono);font-size:20px;color:var(--brand);line-height:1.3}
.stat-label{display:block;font-size:12px;color:var(--t3);margin-top:2px}

/* C02 分类入口 */
.chan-list{display:flex;flex-wrap:wrap;gap:10px}
.chan-chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 17px;border-radius:999px;
  font-size:13.5px;color:var(--t2);
  background:rgba(255,255,255,.04);border:1px solid var(--line-soft);
  transition:color .2s ease,border-color .2s ease,background .2s ease,transform .2s ease;
}
.chan-chip:hover{color:var(--brand);border-color:rgba(53,214,255,.5);background:rgba(53,214,255,.08);transform:translateY(-2px);text-decoration:none}
.chan-chip.is-current{
  color:#04121f;font-weight:600;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  border-color:transparent;
  box-shadow:0 0 0 1px rgba(53,214,255,.5),0 8px 24px rgba(53,214,255,.3);
}
.chan-note{margin:16px 0 0;font-size:13.5px;color:var(--t3)}

/* C03 玩法卡 */
.play-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.play-card{
  position:relative;
  background:var(--glass);border:1px solid var(--line-soft);
  border-radius:var(--r-card);padding:22px 20px;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.play-card:hover{transform:translateY(-3px);border-color:rgba(53,214,255,.42);box-shadow:0 18px 44px rgba(0,0,0,.4)}
.play-ico{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(53,214,255,.1);border:1px solid rgba(53,214,255,.35);
  color:var(--brand);font-size:16px;margin-bottom:14px;
  box-shadow:0 0 20px rgba(53,214,255,.16);
}
.play-card h3{font-size:17px;margin-bottom:8px}
.play-card p{font-size:14px;color:var(--t2);margin:0 0 14px;line-height:1.8}
.play-tags{display:flex;flex-wrap:wrap;gap:6px}

/* C04 流程 */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;position:relative}
.flow-step{
  position:relative;padding:22px 18px;
  border-radius:16px;border:1px solid var(--line-soft);
  background:rgba(255,255,255,.03);
}
.flow-step::before{
  content:"";position:absolute;left:22px;top:-1px;width:26px;height:3px;border-radius:0 0 3px 3px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  box-shadow:0 0 14px rgba(53,214,255,.8);
}
.flow-dot{
  width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:13px;color:#04121f;font-weight:700;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 0 0 4px rgba(53,214,255,.12),0 0 20px rgba(53,214,255,.45);
  margin-bottom:12px;
}
.flow-step h3{font-size:15.5px;margin-bottom:6px}
.flow-step p{font-size:13.5px;color:var(--t3);margin:0 0 10px}
.flow-time{font-family:var(--mono);font-size:11.5px;color:var(--mint)}

/* C05 列表卡 */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.post-card{
  display:flex;flex-direction:column;
  background:var(--glass);border:1px solid var(--line-soft);border-radius:var(--r-card);
  overflow:hidden;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.post-card:hover{transform:translateY(-3px);border-color:rgba(53,214,255,.42);box-shadow:0 18px 44px rgba(0,0,0,.42)}
.post-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;opacity:.92}
.post-card:hover .post-thumb img{transform:scale(1.05);opacity:1}
.post-body{padding:16px 16px 18px;display:flex;flex-direction:column;gap:8px;flex:1}
.post-body h3{font-size:15.5px;line-height:1.55;margin:0}
.post-body h3 a{color:var(--t1)}
.post-body h3 a:hover{color:var(--brand);text-decoration:none}
.post-body p{
  margin:0;font-size:13.5px;color:var(--t3);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-top:auto;padding-top:10px;border-top:1px dashed var(--line-soft)}
.post-meta time{font-family:var(--mono);font-size:11.5px;color:var(--t3)}
.sec-foot{display:flex;justify-content:center;margin-top:24px}
.empty-state{
  text-align:center;padding:44px 20px;border:1px dashed var(--line);border-radius:16px;
  background:rgba(255,255,255,.02);
}
.empty-state i{font-size:24px;color:var(--t3);margin-bottom:12px;display:block}
.empty-state p{margin:0;color:var(--t3);font-size:14px}

/* C06 标签云 */
.tag-cloud{display:flex;flex-wrap:wrap;gap:9px}
.tag-cloud a{
  display:inline-flex;align-items:center;
  padding:7px 15px;border-radius:999px;
  font-size:13px;color:var(--t2);
  background:rgba(255,255,255,.035);border:1px solid var(--line-soft);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.tag-cloud a:hover{color:var(--brand);border-color:rgba(53,214,255,.5);background:rgba(53,214,255,.08);text-decoration:none}

/* C07 下载条 */
.dl-strip{
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:26px;align-items:center;
  padding:30px 34px;border-radius:20px;
  border:1px solid rgba(53,214,255,.3);
  background:linear-gradient(120deg,rgba(53,214,255,.12),rgba(46,230,168,.06) 55%,rgba(14,28,54,.6)),var(--bg-2);
  box-shadow:0 0 0 1px rgba(53,214,255,.12),var(--shadow);
}
.dl-strip h2{font-size:22px;margin-bottom:8px}
.dl-strip p{margin:0 0 16px;font-size:14px;color:var(--t2);max-width:560px}
.dl-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.qr-box{
  width:132px;text-align:center;flex:none;
}
.qr-art{
  width:132px;height:132px;border-radius:14px;
  background:#04121f;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  color:var(--brand);font-size:34px;
  box-shadow:inset 0 0 32px rgba(53,214,255,.14);
}
.qr-box span{display:block;margin-top:8px;font-family:var(--mono);font-size:11px;color:var(--t3)}

/* C08 FAQ */
.faq-item{
  border:1px solid var(--line-soft);border-radius:14px;
  background:rgba(255,255,255,.032);margin-bottom:12px;overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item:hover{border-color:rgba(53,214,255,.34);background:rgba(53,214,255,.05)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:16px 52px 16px 20px;
  color:var(--t1);font-size:15.5px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);
  font-family:var(--mono);font-size:20px;color:var(--brand);
  text-shadow:0 0 12px rgba(53,214,255,.7);transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"−"}
.faq-body{padding:0 20px 18px;font-size:14.5px;color:var(--t2);animation:fadeIn .25s ease}
.faq-body p:last-child{margin-bottom:0}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* C09 阅读路径 */
.read-path{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 28px;border-radius:16px;
  background:var(--glass);border:1px solid var(--line-soft);
}
.read-path p{margin:0;font-size:14px;color:var(--t2)}
.read-links{display:flex;gap:16px;flex-wrap:wrap}
.read-links a{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}

/* ============ 页脚 ============ */
.site-footer{background:#040914;border-top:1px solid var(--line-soft);margin-top:56px;padding:56px 0 0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px}
.foot-brand .logo{margin-bottom:16px}
.foot-brand p{margin:0;font-size:13.5px;color:var(--t3);line-height:1.9;max-width:340px}
.foot-col h5{font-size:13px;color:var(--t1);margin-bottom:14px;letter-spacing:.02em}
.foot-col a{display:block;font-size:13.5px;color:var(--t3);padding:5px 0;transition:color .2s ease,transform .2s ease}
.foot-col a:hover{color:var(--brand);transform:translateX(3px);text-decoration:none}
.foot-bottom{
  border-top:1px solid var(--line-soft);padding:18px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:12.5px;color:var(--t3);font-family:var(--mono);
}
.foot-bottom .links{display:flex;gap:18px;flex-wrap:wrap}
.foot-bottom .links a{color:var(--t3)}
.foot-bottom .links a:hover{color:var(--brand)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .page-shell{grid-template-columns:220px minmax(0,1fr);gap:24px;padding:26px 32px 10px}
  .play-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr))}
  .header-inner{gap:12px}
  .head-search input{width:150px}
  .head-search input:focus{width:180px}
  .cat-head-inner{grid-template-columns:minmax(0,1fr) 230px;gap:20px}
}
@media (max-width:1023px){
  .nav-main,.head-meta,.head-cta,.head-search{display:none}
  .menu-toggle{display:flex;margin-left:auto}
  .header-inner{height:64px;padding:0 20px}
  .page-shell{grid-template-columns:minmax(0,1fr);padding:20px 20px 6px;gap:0}
  .doc-sidebar{display:none}
  .toc-mobile{display:block}
  .cat-head{padding:26px 24px}
  .cat-head-inner{grid-template-columns:minmax(0,1fr)}
  .cat-stats{grid-template-columns:repeat(4,minmax(0,1fr))}
  .block{padding:32px 24px}
  .dl-strip{grid-template-columns:minmax(0,1fr);padding:26px 24px}
  .qr-box{display:flex;align-items:center;gap:14px;width:auto}
  .qr-art{width:96px;height:96px;font-size:26px}
  .qr-box span{margin-top:0}
  .foot-grid{grid-template-columns:1fr 1fr}
  .foot-brand{grid-column:1/-1}
}
@media (max-width:767px){
  body{font-size:15px}
  .wrap{padding:0 18px}
  .header-inner{padding:0 16px;height:60px}
  .logo-text span:first-child{font-size:13.5px}
  .logo-text span:last-child{font-size:10px}
  .page-shell{padding:16px 16px 4px}
  .cat-head{padding:22px 18px}
  .cat-head h1{font-size:23px}
  .cat-desc{font-size:14px}
  .cat-stats{grid-template-columns:1fr 1fr;gap:8px}
  .stat{padding:11px 12px}
  .stat-num{font-size:17px}
  .block{padding:26px 18px;border-radius:16px;margin-bottom:18px}
  .sec-head h2{font-size:20px}
  .play-grid,.post-grid,.flow{grid-template-columns:minmax(0,1fr)}
  .play-card:hover,.post-card:hover,.chan-chip:hover{transform:none}
  .play-card:active,.post-card:active{transform:scale(.99)}
  .btn{width:100%}
  .dl-actions .btn{width:100%}
  .read-path{flex-direction:column;align-items:flex-start;padding:20px 18px}
  .foot-grid{grid-template-columns:1fr;gap:24px}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .drawer{width:100%;max-width:100%}
}