/* roulang page: index */
:root{
  --bg-0:#05080F;--bg-1:#0A1120;--bg-2:#0E1830;
  --glass:rgba(20,32,56,.55);--glass-bd:rgba(120,190,255,.14);
  --c-main:#3AD9FF;--c-main-h:#6FE6FF;
  --c-accent:#FF6A5E;--c-accent-h:#FF8878;
  --c-violet:#8A7BFF;
  --tx:#EAF2FF;--tx-2:#9FB2CC;--tx-3:#6B7F9B;
  --ok:#38E0A8;--warn:#FFC24B;
  --r-s:10px;--r-m:16px;--r-l:22px;--r-card:18px;
  --sh-card:0 10px 30px rgba(2,8,20,.55);
  --sh-glow:0 0 0 1px rgba(58,217,255,.35),0 12px 34px rgba(58,217,255,.22);
  --sh-accent:0 0 0 1px rgba(255,106,94,.4),0 12px 30px rgba(255,106,94,.28);
  --line:rgba(120,190,255,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-0);color:var(--tx);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-main);text-decoration:none;transition:color .25s var(--ease),opacity .25s var(--ease)}
a:hover{color:var(--c-main-h)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;letter-spacing:.01em}
p{margin:0 0 14px}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-main);outline-offset:2px;border-radius:6px}
::selection{background:rgba(58,217,255,.28);color:#fff}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1400px){.container-x{max-width:1280px}}

.section{position:relative;padding:88px 0;border-top:1px solid var(--line)}
.section.alt{background:var(--bg-1)}
.section.alt::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(720px 320px at 15% 0%,rgba(58,217,255,.10),transparent 62%);
}
.section>.container-x{position:relative;z-index:1}

.sec-head{max-width:780px;margin-bottom:40px}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.14em;
  color:var(--c-main);text-transform:uppercase;margin-bottom:14px;
}
.sec-eyebrow::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,var(--c-main),transparent)}
.sec-title{font-size:clamp(24px,2.6vw,34px);margin-bottom:14px}
.sec-desc{color:var(--tx-2);font-size:16px;margin:0;max-width:720px}

.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.btn-x:active{transform:translateY(1px)}
.btn-accent{background:var(--c-accent);color:#0A1120;box-shadow:var(--sh-accent)}
.btn-accent:hover{background:var(--c-accent-h);color:#0A1120;box-shadow:0 0 0 1px rgba(255,106,94,.55),0 16px 38px rgba(255,106,94,.36);transform:translateY(-1px)}
.btn-cyan{background:transparent;border-color:rgba(58,217,255,.55);color:var(--c-main)}
.btn-cyan:hover{background:rgba(58,217,255,.10);border-color:var(--c-main);color:var(--c-main-h);box-shadow:var(--sh-glow);transform:translateY(-1px)}
.btn-quiet{background:transparent;color:var(--tx-2);padding:0 12px}
.btn-quiet:hover{color:var(--c-main)}
.btn-lg{height:48px;padding:0 30px;font-size:16px}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.text-link{color:var(--c-main);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.text-link:hover{text-decoration:underline;text-underline-offset:4px}

.badge-pill{display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;font-size:12px;font-weight:600;line-height:1}
.badge-cyan{background:rgba(58,217,255,.14);color:var(--c-main);border:1px solid rgba(58,217,255,.24)}
.badge-violet{background:rgba(138,123,255,.16);color:#B3A8FF;border:1px solid rgba(138,123,255,.26)}
.badge-accent{background:rgba(255,106,94,.14);color:#FF9C93;border:1px solid rgba(255,106,94,.26)}
.badge-ok{background:rgba(56,224,168,.13);color:var(--ok);border:1px solid rgba(56,224,168,.24)}
.badge-muted{background:rgba(159,178,204,.10);color:var(--tx-2);border:1px solid rgba(159,178,204,.18)}

.card-x{
  background:var(--bg-2);border:1px solid rgba(120,190,255,.12);border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.card-x:hover{transform:translateY(-4px);border-color:rgba(58,217,255,.45);box-shadow:var(--sh-glow)}
.glass{background:var(--glass);backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);border:1px solid var(--glass-bd);border-radius:var(--r-l)}

.grid{display:grid;gap:20px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:991px){.g-3,.g-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:575px){.g-2,.g-3,.g-4{grid-template-columns:1fr}}

.media-frame{
  position:relative;overflow:hidden;border-radius:var(--r-card);
  background:linear-gradient(135deg,#12203a,#0A1120);
  border:1px solid rgba(120,190,255,.14);aspect-ratio:16/10;
}
.media-frame img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.card-x:hover .media-frame img,.feature-row:hover .media-frame img{transform:scale(1.03)}
.media-frame.v45{aspect-ratio:4/5}
.media-frame.v169{aspect-ratio:16/9}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:1035;
  background:rgba(5,8,15,.72);
  backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--line);transition:background .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header.scrolled{background:rgba(5,8,15,.94);border-bottom-color:rgba(120,190,255,.18);box-shadow:0 8px 30px rgba(2,8,20,.6)}
.nav-wrap{height:72px;display:flex;align-items:center;gap:26px}
.brand{display:flex;align-items:center;gap:10px;color:var(--tx);font-weight:700;font-size:17px;flex-shrink:0}
.brand:hover{color:var(--tx)}
.brand-mark{
  width:28px;height:28px;border-radius:9px;display:grid;place-items:center;
  border:1px solid rgba(58,217,255,.6);background:rgba(58,217,255,.10);color:var(--c-main);
  box-shadow:0 0 18px rgba(58,217,255,.35);
}
.nav-channels{display:flex;align-items:center;gap:22px;flex:1;min-width:0}
.nav-ch{position:relative;color:var(--tx-2);font-size:15px;padding:6px 0;white-space:nowrap}
.nav-ch:hover{color:var(--tx)}
.nav-ch.active{color:var(--c-main)}
.nav-ch.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;
  background:var(--c-main);box-shadow:0 0 10px rgba(58,217,255,.8);
}
.nav-right{display:flex;align-items:center;gap:14px;flex-shrink:0}
.nav-search{
  display:flex;align-items:center;height:40px;padding:0 6px 0 16px;border-radius:999px;
  background:rgba(14,24,48,.85);border:1px solid rgba(120,190,255,.16);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.nav-search:focus-within{border-color:rgba(58,217,255,.6);box-shadow:0 0 0 3px rgba(58,217,255,.15)}
.nav-search input{background:transparent;border:0;outline:none;color:var(--tx);font-size:14px;width:196px}
.nav-search input::placeholder{color:var(--tx-3)}
.nav-search button{
  width:30px;height:30px;border-radius:50%;border:0;cursor:pointer;
  background:rgba(58,217,255,.14);color:var(--c-main);display:grid;place-items:center;
  transition:background .25s var(--ease),color .25s var(--ease);
}
.nav-search button:hover{background:rgba(58,217,255,.26);color:#fff}
.nav-toggle{
  margin-left:auto;width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:rgba(14,24,48,.9);border:1px solid rgba(120,190,255,.2);color:var(--tx);
}
.m-offcanvas{background:#070C17;color:var(--tx);border-left:1px solid rgba(120,190,255,.18);width:min(340px,86vw)}
.m-offcanvas .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.m-offcanvas .btn-close{filter:invert(1) grayscale(1) brightness(1.6)}
.m-search{display:flex;align-items:center;gap:8px;background:rgba(14,24,48,.9);border:1px solid rgba(120,190,255,.2);border-radius:999px;padding:6px 6px 6px 16px;margin-bottom:20px}
.m-search input{flex:1;background:transparent;border:0;outline:none;color:var(--tx);font-size:14px}
.m-link{display:block;padding:12px 4px;color:var(--tx-2);font-size:15.5px;border-bottom:1px solid rgba(120,190,255,.07)}
.m-link.active{color:var(--c-main)}
.m-link:hover{color:var(--c-main)}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;padding:76px 0 64px;border-bottom:1px solid var(--line)}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.30}
.hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(880px 420px at 18% 8%,rgba(58,217,255,.16),transparent 62%),
    radial-gradient(680px 400px at 86% 82%,rgba(138,123,255,.14),transparent 64%),
    linear-gradient(180deg,rgba(5,8,15,.74),rgba(5,8,15,.97));
}
.hero>.container-x{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;height:30px;padding:0 14px;border-radius:999px;
  background:rgba(58,217,255,.10);border:1px solid rgba(58,217,255,.26);color:var(--c-main);
  font-size:12.5px;letter-spacing:.06em;margin-bottom:22px;
}
.hero h1{font-size:clamp(28px,3.7vw,46px);line-height:1.22;margin-bottom:18px}
.hero h1 em{font-style:normal;color:var(--c-main)}
.hero-lede{color:var(--tx-2);font-size:16.5px;max-width:600px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;padding-top:22px;border-top:1px solid rgba(120,190,255,.1)}
.hero-tags a{
  padding:6px 14px;border-radius:999px;font-size:13px;color:var(--tx-2);
  border:1px solid rgba(120,190,255,.16);background:rgba(14,24,48,.6);
  transition:all .25s var(--ease);
}
.hero-tags a:hover{color:var(--c-main);border-color:rgba(58,217,255,.5);background:rgba(58,217,255,.08)}

.hero-panel{padding:24px}
.panel-label{font-size:12.5px;letter-spacing:.16em;color:var(--tx-3);margin-bottom:16px}
.plan-grid{display:grid;gap:12px}
.plan{
  position:relative;border-radius:var(--r-m);padding:18px 18px 16px;
  background:rgba(14,24,48,.72);border:1px solid rgba(120,190,255,.14);
  transition:all .25s var(--ease);
}
.plan:hover{border-color:rgba(58,217,255,.4);transform:translateY(-2px)}
.plan.recommended{
  border-color:rgba(58,217,255,.55);
  background:linear-gradient(160deg,rgba(58,217,255,.13),rgba(14,24,48,.9));
  box-shadow:var(--sh-glow);
}
.plan .plan-flag{position:absolute;top:-11px;right:16px}
.plan h3{font-size:16px;margin-bottom:6px}
.plan .price{font-size:26px;font-weight:700;color:var(--tx);font-variant-numeric:tabular-nums;line-height:1.2}
.plan .price span{font-size:13px;font-weight:400;color:var(--tx-3);margin-left:4px}
.plan ul{margin:10px 0 14px;display:grid;gap:6px}
.plan li{font-size:13px;color:var(--tx-2);display:flex;gap:8px;align-items:flex-start;line-height:1.6}
.plan li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-main);margin-top:8px;flex-shrink:0;box-shadow:0 0 8px rgba(58,217,255,.7)}
.plan .btn-x{width:100%}

.hero-metrics{display:flex;flex-wrap:wrap;gap:28px;margin-top:26px}
.hero-metrics div{font-size:13px;color:var(--tx-3)}
.hero-metrics b{
  display:block;font-size:22px;color:var(--tx);font-weight:700;
  font-variant-numeric:tabular-nums;line-height:1.3;
}
.hero-metrics b sup{font-size:12px;color:var(--c-main);top:-.7em}

/* ===== 痛点 ===== */
.pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.pain-card{display:flex;gap:18px;padding:24px}
.pain-num{
  font-size:24px;font-weight:700;line-height:1;color:rgba(58,217,255,.38);
  font-variant-numeric:tabular-nums;flex-shrink:0;padding-top:4px;
}
.pain-card h3{font-size:17px;margin-bottom:8px}
.pain-card p{font-size:14px;color:var(--tx-2);margin:0}

/* ===== 解决方案 ===== */
.sol-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:20px}
.sol-main{padding:32px;display:flex;flex-direction:column;justify-content:space-between;background:linear-gradient(155deg,rgba(58,217,255,.10),rgba(14,24,48,.95) 58%)}
.sol-main h3{font-size:22px;margin:16px 0 12px}
.sol-main p{color:var(--tx-2);font-size:15px}
.sol-side{display:grid;gap:20px}
.sol-small{padding:24px}
.sol-small h3{font-size:17px;margin:14px 0 8px}
.sol-small p{font-size:14px;color:var(--tx-2);margin-bottom:12px}
.icon-box{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:rgba(58,217,255,.10);border:1px solid rgba(58,217,255,.26);color:var(--c-main);
}
.icon-box.violet{background:rgba(138,123,255,.12);border-color:rgba(138,123,255,.3);color:#B3A8FF}
.icon-box.accent{background:rgba(255,106,94,.12);border-color:rgba(255,106,94,.3);color:#FF9C93}
@media(max-width:991px){.sol-grid{grid-template-columns:1fr}}

/* ===== 功能媒体条 ===== */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;padding:44px 0;border-top:1px dashed rgba(120,190,255,.12)}
.feature-row:first-of-type{border-top:0;padding-top:0}
.feature-row.reverse .feature-text{order:2}
.feature-text h3{font-size:22px;margin-bottom:12px}
.feature-text p{color:var(--tx-2);font-size:15px;margin-bottom:18px}
.pill-tags{display:flex;flex-wrap:wrap;gap:8px}
.pill-tags span{
  font-size:12.5px;padding:5px 13px;border-radius:999px;color:var(--c-main);
  background:rgba(58,217,255,.08);border:1px solid rgba(58,217,255,.2);
}
@media(max-width:991px){
  .feature-row{grid-template-columns:1fr;gap:26px}
  .feature-row.reverse .feature-text{order:0}
}

/* ===== 步骤时间轴 ===== */
.steps{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:8px}
.steps::before{
  content:"";position:absolute;left:8%;right:8%;top:22px;height:1px;
  background:linear-gradient(90deg,rgba(58,217,255,.55),rgba(138,123,255,.5),rgba(58,217,255,.12));
}
.step{position:relative;text-align:center;z-index:1}
.step-dot{
  width:44px;height:44px;margin:0 auto 18px;border-radius:50%;display:grid;place-items:center;
  background:#060B14;border:1px solid rgba(58,217,255,.55);color:var(--c-main);font-weight:700;
  font-size:15px;font-variant-numeric:tabular-nums;
  box-shadow:0 0 0 6px rgba(58,217,255,.06),0 0 22px rgba(58,217,255,.28);
}
.step h3{font-size:16px;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--tx-2);margin:0}
@media(max-width:767px){
  .steps{grid-template-columns:1fr;gap:22px}
  .steps::before{left:22px;right:auto;top:8px;bottom:8px;width:1px;height:auto;background:linear-gradient(180deg,rgba(58,217,255,.5),rgba(138,123,255,.4),transparent)}
  .step{text-align:left;padding-left:66px}
  .step-dot{position:absolute;left:0;top:0;margin:0}
}

/* ===== 数据条 ===== */
.stats-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;overflow:hidden;
  background:rgba(120,190,255,.1);border:1px solid rgba(120,190,255,.14);border-radius:var(--r-l);
}
.stat{background:rgba(10,17,32,.92);padding:30px 18px;text-align:center}
.stat b{display:block;font-size:clamp(28px,3vw,40px);color:var(--c-main);font-variant-numeric:tabular-nums;line-height:1.1;font-weight:700}
.stat span{display:block;margin-top:8px;font-size:12.5px;color:var(--tx-3)}
@media(max-width:767px){.stats-band{grid-template-columns:repeat(2,1fr)}}

/* ===== 证言 ===== */
.testi-track{display:flex;gap:18px;overflow-x:auto;padding:4px 2px 18px;scroll-snap-type:x mandatory}
.testi-track::-webkit-scrollbar{height:6px}
.testi-track::-webkit-scrollbar-track{background:rgba(255,255,255,.05);border-radius:99px}
.testi-track::-webkit-scrollbar-thumb{background:rgba(58,217,255,.4);border-radius:99px}
.testi-card{flex:0 0 330px;scroll-snap-align:start;padding:24px}
.testi-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:44px;height:44px;border-radius:50%;display:grid;place-items:center;flex-shrink:0;
  background:linear-gradient(145deg,rgba(58,217,255,.24),rgba(138,123,255,.28));
  border:1px solid rgba(120,190,255,.28);color:#fff;font-weight:700;font-size:16px;
}
.testi-name{font-size:14.5px;font-weight:600}
.testi-card p{font-size:14px;color:var(--tx-2);margin:0 0 14px}
.stars{display:flex;gap:3px;color:var(--warn)}
@media(max-width:575px){.testi-card{flex:0 0 280px}}

/* ===== 人群卡 ===== */
.crowd-card{padding:24px;display:flex;flex-direction:column;gap:10px}
.crowd-card h3{font-size:17px}
.crowd-card p{font-size:14px;color:var(--tx-2);margin:0 0 6px;flex:1}

/* ===== 城市入口 ===== */
.city-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.city-card{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:16px 18px;border-radius:var(--r-m);background:var(--bg-2);
  border:1px solid rgba(120,190,255,.12);color:var(--tx);font-size:14.5px;font-weight:600;
  transition:all .25s var(--ease);
}
.city-card:hover{transform:translateY(-3px);border-color:rgba(58,217,255,.5);color:var(--c-main);box-shadow:var(--sh-glow)}
.city-card .arrow{color:var(--tx-3);font-size:13px;transition:color .25s var(--ease),transform .25s var(--ease)}
.city-card:hover .arrow{color:var(--c-main);transform:translateX(2px)}
@media(max-width:991px){.city-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:575px){.city-grid{grid-template-columns:repeat(2,1fr)}}

/* ===== 热门话题 ===== */
.topic-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:26px;align-items:start}
.topic-lead{overflow:hidden;padding:0}
.topic-lead .media-frame{border-radius:0;border:0;border-bottom:1px solid rgba(120,190,255,.12);aspect-ratio:16/9}
.topic-lead-body{padding:22px 24px 24px}
.topic-lead-body h3{font-size:20px;margin:12px 0 10px}
.topic-lead-body h3 a{color:var(--tx)}
.topic-lead-body h3 a:hover{color:var(--c-main)}
.topic-lead-body p{font-size:14px;color:var(--tx-2);margin-bottom:10px}
.topic-list{display:grid;gap:2px}
.topic-list li{
  display:flex;gap:14px;align-items:flex-start;padding:16px 18px;border-radius:var(--r-m);
  border:1px solid transparent;transition:all .25s var(--ease);
}
.topic-list li:hover{background:rgba(14,24,48,.8);border-color:rgba(120,190,255,.16)}
.topic-list .idx{
  font-size:14px;font-weight:700;color:rgba(58,217,255,.6);font-variant-numeric:tabular-nums;flex-shrink:0;
}
.topic-list a{color:var(--tx);font-size:15px;line-height:1.6}
.topic-list a:hover{color:var(--c-main)}
.topic-list .meta{display:block;font-size:12.5px;color:var(--tx-3);margin-top:4px}
@media(max-width:991px){.topic-grid{grid-template-columns:1fr}}

/* ===== 权益对比 ===== */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:30px}
.compare-card{padding:28px}
.compare-card h3{font-size:19px;margin-bottom:6px}
.compare-card .sub{font-size:13px;color:var(--tx-3);margin-bottom:18px}
.compare-card ul{display:grid;gap:12px}
.compare-card li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:var(--tx-2)}
.compare-card li svg{flex-shrink:0;margin-top:5px}
.compare-card.highlight{border-color:rgba(58,217,255,.45);background:linear-gradient(160deg,rgba(58,217,255,.08),rgba(14,24,48,.96));box-shadow:var(--sh-glow)}
@media(max-width:767px){.compare-grid{grid-template-columns:1fr}}

/* ===== 安全 ===== */
.safety-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.safety-list{display:grid;gap:16px}
.safety-item{display:flex;gap:16px;padding:20px;border-radius:var(--r-m);background:rgba(14,24,48,.75);border:1px solid rgba(120,190,255,.12)}
.safety-item h3{font-size:16px;margin-bottom:6px}
.safety-item p{font-size:13.5px;color:var(--tx-2);margin:0}
@media(max-width:991px){.safety-grid{grid-template-columns:1fr;gap:26px}}

/* ===== 资讯 / CMS ===== */
.news-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:26px;align-items:start}
.news-lead{overflow:hidden;padding:0}
.news-lead .media-frame{border-radius:0;border:0;border-bottom:1px solid rgba(120,190,255,.12);aspect-ratio:16/9}
.news-lead-body{padding:22px 24px 24px}
.news-lead-body h3{font-size:20px;margin:12px 0 10px}
.news-lead-body h3 a{color:var(--tx)}
.news-lead-body h3 a:hover{color:var(--c-main)}
.news-lead-body p{font-size:14px;color:var(--tx-2)}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:12.5px;color:var(--tx-3)}
.news-list{display:grid;gap:14px}
.news-item{display:flex;gap:14px;padding:14px;border-radius:var(--r-m);border:1px solid rgba(120,190,255,.1);background:rgba(14,24,48,.55);transition:all .25s var(--ease)}
.news-item:hover{border-color:rgba(58,217,255,.4);transform:translateY(-2px)}
.news-thumb{width:96px;height:72px;border-radius:12px;overflow:hidden;flex-shrink:0;background:#12203a}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-item h4{font-size:14.5px;line-height:1.55;margin-bottom:6px}
.news-item h4 a{color:var(--tx)}
.news-item h4 a:hover{color:var(--c-main)}
.news-item .news-meta{font-size:12px;gap:8px}
.empty-note{
  padding:40px 24px;text-align:center;border-radius:var(--r-card);
  border:1px dashed rgba(120,190,255,.24);background:rgba(14,24,48,.5);color:var(--tx-2);font-size:14.5px;
}
.empty-note span{display:block;color:var(--tx-3);font-size:13px;margin-top:6px}
@media(max-width:991px){.news-grid{grid-template-columns:1fr}}

/* ===== 指标 ===== */
.meter{margin-bottom:20px}
.meter-top{display:flex;justify-content:space-between;font-size:14px;color:var(--tx-2);margin-bottom:9px}
.meter-top b{color:var(--c-main);font-variant-numeric:tabular-nums;font-weight:600}
.meter-track{height:8px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden}
.meter-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--c-main),var(--c-violet));box-shadow:0 0 12px rgba(58,217,255,.45)}
.meter-wrap{display:grid;grid-template-columns:1fr 1fr;gap:0 44px}
@media(max-width:767px){.meter-wrap{grid-template-columns:1fr}}

/* ===== FAQ ===== */
.accordion-item{
  background:rgba(14,24,48,.7)!important;border:1px solid rgba(120,190,255,.12)!important;
  border-radius:var(--r-m)!important;margin-bottom:12px;overflow:hidden;
}
.accordion-button{
  background:transparent!important;color:var(--tx)!important;font-size:17px;font-weight:600;
  padding:18px 22px;box-shadow:none!important;line-height:1.6;
}
.accordion-button:not(.collapsed){color:var(--c-main)!important;background:rgba(58,217,255,.07)!important}
.accordion-button::after{
  background-image:none!important;content:"";width:9px;height:9px;
  border-right:2px solid currentColor;border-bottom:2px solid currentColor;
  transform:rotate(45deg) translateY(-2px);transition:transform .25s var(--ease);flex-shrink:0;
}
.accordion-button:not(.collapsed)::after{transform:rotate(-135deg) translateY(-2px)}
.accordion-body{padding:0 22px 20px;color:var(--tx-2);font-size:14.5px}

/* ===== 收口 CTA ===== */
.final-cta{position:relative;overflow:hidden;padding:46px;border-radius:var(--r-l);
  background:var(--glass);backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--glass-bd);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.final-cta::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(560px 260px at 14% 20%,rgba(58,217,255,.16),transparent 68%);
}
.final-cta>div{position:relative;z-index:1}
.final-cta h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:10px}
.final-cta p{color:var(--tx-2);font-size:15px;margin:0;max-width:560px}
.final-actions{display:flex;flex-wrap:wrap;gap:14px}
@media(max-width:767px){.final-cta{padding:28px 22px}}

/* ===== Footer ===== */
.site-footer{background:#04070D;border-top:1px solid var(--line);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--tx);margin-bottom:14px}
.footer-desc{font-size:13.5px;color:var(--tx-3);line-height:1.9;margin-bottom:18px;max-width:300px}
.social-row{display:flex;gap:10px}
.social-row span{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:rgba(14,24,48,.9);border:1px solid rgba(120,190,255,.16);color:var(--tx-2);
  transition:all .25s var(--ease);cursor:pointer;
}
.social-row span:hover{color:var(--c-main);border-color:rgba(58,217,255,.5)}
.footer-col h4{font-size:14px;color:var(--tx);margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{display:grid;gap:10px}
.footer-col a,.footer-col span.plain{font-size:13.5px;color:var(--tx-3)}
.footer-col a:hover{color:var(--c-main)}
.qr-box{
  width:92px;height:92px;border-radius:12px;display:grid;place-items:center;
  background:rgba(14,24,48,.9);border:1px dashed rgba(120,190,255,.3);color:var(--tx-3);
  font-size:12px;text-align:center;line-height:1.5;margin-top:12px;
}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;font-size:12.5px;color:var(--tx-3);
}
.footer-bottom a{color:var(--tx-3)}
.footer-bottom a:hover{color:var(--c-main)}
@media(max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:575px){
  .footer-grid{grid-template-columns:1fr}
}

/* ===== 响应式收口 ===== */
@media(max-width:991px){
  .hero{padding:56px 0 48px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-panel{order:2}
  .nav-wrap{height:64px}
  .pain-grid{grid-template-columns:1fr}
}
@media(max-width:767px){
  .nav-wrap{height:60px}
  .section{padding:44px 0}
  .sec-head{margin-bottom:28px}
  .hero-actions .btn-x{flex:1 1 auto}
  .hero-metrics{gap:20px}
  .topic-lead-body,.news-lead-body{padding:18px}
  .final-cta{padding:24px 18px}
  .btn-lg{height:44px;font-size:15px;padding:0 22px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --bg-0:#05080F;--bg-1:#0A1120;--bg-2:#0E1830;
  --glass:rgba(20,32,56,.55);--glass-bd:rgba(120,190,255,.14);
  --c-main:#3AD9FF;--c-main-h:#6FE6FF;
  --c-accent:#FF6A5E;--c-accent-h:#FF8878;
  --c-violet:#8A7BFF;
  --tx:#EAF2FF;--tx-2:#9FB2CC;--tx-3:#6B7F9B;
  --ok:#38E0A8;--warn:#FFC24B;
  --r-s:10px;--r-m:16px;--r-l:22px;--r-card:18px;
  --sh-card:0 10px 30px rgba(2,8,20,.55);
  --sh-glow:0 0 0 1px rgba(58,217,255,.35),0 12px 34px rgba(58,217,255,.22);
  --sh-accent:0 0 0 1px rgba(255,106,94,.4),0 12px 30px rgba(255,106,94,.28);
  --line:rgba(120,190,255,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-0);color:var(--tx);overflow-x:hidden;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-main);text-decoration:none;transition:color .25s var(--ease),opacity .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease)}
a:hover{color:var(--c-main-h)}
button,input,textarea,select{font-family:inherit}
:focus-visible{outline:2px solid var(--c-main);outline-offset:2px}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.01em}
p{margin:0}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.section{position:relative;padding:88px 0;border-top:1px solid var(--line)}
.section.alt{background:var(--bg-1)}
.section.alt::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(720px 320px at 15% 0%,rgba(58,217,255,.10),transparent 62%);
}
.section>.container-x{position:relative;z-index:1}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.14em;
  color:var(--c-main);text-transform:uppercase;margin-bottom:14px;
}
.sec-eyebrow::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,var(--c-main),transparent)}
.sec-title{font-size:clamp(24px,2.6vw,34px);margin-bottom:14px}
.sec-sub{color:var(--tx-2);font-size:15px;max-width:720px}
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.btn-x:active{transform:translateY(1px)}
.btn-accent{background:var(--c-accent);color:#0A1120;box-shadow:var(--sh-accent)}
.btn-accent:hover{background:var(--c-accent-h);color:#0A1120;box-shadow:0 0 0 1px rgba(255,106,94,.55),0 16px 38px rgba(255,106,94,.36);transform:translateY(-1px)}
.btn-cyan{background:transparent;border-color:rgba(58,217,255,.55);color:var(--c-main)}
.btn-cyan:hover{background:rgba(58,217,255,.10);border-color:var(--c-main);color:var(--c-main-h);box-shadow:var(--sh-glow);transform:translateY(-1px)}
.btn-quiet{background:transparent;color:var(--tx-2);padding:0 12px}
.btn-quiet:hover{color:var(--c-main)}
.btn-lg{height:48px;padding:0 30px;font-size:16px}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.text-link{color:var(--c-main);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.text-link:hover{color:var(--c-main-h);text-decoration:underline;text-underline-offset:4px}
.badge-pill{display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;font-size:12px;font-weight:600;line-height:1}
.badge-cyan{background:rgba(58,217,255,.14);color:var(--c-main);border:1px solid rgba(58,217,255,.24)}
.badge-violet{background:rgba(138,123,255,.16);color:#B3A8FF;border:1px solid rgba(138,123,255,.26)}
.badge-accent{background:rgba(255,106,94,.14);color:#FF9C93;border:1px solid rgba(255,106,94,.26)}
.badge-ok{background:rgba(56,224,168,.13);color:var(--ok);border:1px solid rgba(56,224,168,.24)}
.badge-muted{background:rgba(159,178,204,.10);color:var(--tx-2);border:1px solid rgba(159,178,204,.18)}
.card-x{
  background:var(--bg-2);border:1px solid rgba(120,190,255,.12);border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.card-x:hover{transform:translateY(-4px);border-color:rgba(58,217,255,.45);box-shadow:var(--sh-glow)}
.media-frame{
  position:relative;overflow:hidden;border-radius:var(--r-card);
  background:linear-gradient(135deg,#12203a,#0A1120);
  border:1px solid rgba(120,190,255,.14);aspect-ratio:16/10;
}
.media-frame img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.media-frame.v169{aspect-ratio:16/9}
.card-x:hover .media-frame img{transform:scale(1.03)}
/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:1035;
  background:rgba(5,8,15,.72);
  backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--line);
  transition:background .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header.scrolled{background:rgba(5,8,15,.94);border-bottom-color:rgba(120,190,255,.18);box-shadow:0 8px 30px rgba(2,8,20,.6)}
.nav-wrap{height:72px;display:flex;align-items:center;gap:26px}
.brand{display:flex;align-items:center;gap:10px;color:var(--tx);font-weight:700;font-size:17px;flex-shrink:0}
.brand:hover{color:var(--tx)}
.brand-mark{
  width:28px;height:28px;border-radius:9px;display:grid;place-items:center;
  border:1px solid rgba(58,217,255,.6);background:rgba(58,217,255,.10);color:var(--c-main);
  box-shadow:0 0 18px rgba(58,217,255,.35);
}
.nav-channels{display:flex;align-items:center;gap:22px;flex:1;min-width:0}
.nav-ch{position:relative;color:var(--tx-2);font-size:15px;padding:6px 0;white-space:nowrap}
.nav-ch:hover{color:var(--tx)}
.nav-ch.active{color:var(--c-main)}
.nav-ch.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;
  background:var(--c-main);box-shadow:0 0 10px rgba(58,217,255,.8);
}
.nav-right{display:flex;align-items:center;gap:14px;flex-shrink:0}
.nav-search{
  display:flex;align-items:center;height:40px;padding:0 6px 0 16px;border-radius:999px;
  background:rgba(14,24,48,.85);border:1px solid rgba(120,190,255,.16);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.nav-search:focus-within{border-color:rgba(58,217,255,.6);box-shadow:0 0 0 3px rgba(58,217,255,.15)}
.nav-search input{
  width:170px;background:transparent;border:0;color:var(--tx);font-size:14px;outline:none;
}
.nav-search input::placeholder{color:var(--tx-3)}
.nav-search button{
  width:30px;height:30px;border-radius:50%;border:0;display:grid;place-items:center;
  background:rgba(58,217,255,.12);color:var(--c-main);cursor:pointer;
  transition:background .25s var(--ease),color .25s var(--ease);
}
.nav-search button:hover{background:rgba(58,217,255,.24);color:var(--c-main-h)}
.link-plain{color:var(--tx-2);font-size:14.5px}
.link-plain:hover{color:var(--c-main)}
.btn-publish{
  display:inline-flex;align-items:center;height:40px;padding:0 20px;border-radius:999px;
  background:var(--c-accent);color:#0A1120;font-size:14.5px;font-weight:700;
  box-shadow:0 0 0 1px rgba(255,106,94,.4),0 10px 26px rgba(255,106,94,.26);
  transition:background .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease),color .25s var(--ease);
}
.btn-publish:hover{background:var(--c-accent-h);color:#0A1120;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(255,106,94,.55),0 16px 34px rgba(255,106,94,.34)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;border:1px solid rgba(120,190,255,.2);
  background:rgba(14,24,48,.8);color:var(--tx);align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{border-color:rgba(58,217,255,.5);color:var(--c-main)}
.drawer-x{background:var(--bg-1);color:var(--tx);border-left:1px solid rgba(120,190,255,.16);width:min(340px,86vw)}
.drawer-x .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.drawer-x .offcanvas-title{font-size:16px;color:var(--tx)}
.drawer-x .btn-close{filter:invert(1) grayscale(1);opacity:.7}
.drawer-x .offcanvas-body{padding:20px}
.drawer-search{display:flex;align-items:center;height:42px;border-radius:999px;background:rgba(14,24,48,.9);border:1px solid rgba(120,190,255,.18);padding:0 6px 0 16px;margin-bottom:18px}
.drawer-search input{flex:1;background:transparent;border:0;color:var(--tx);font-size:14.5px;outline:none}
.drawer-search input::placeholder{color:var(--tx-3)}
.drawer-search button{width:32px;height:32px;border-radius:50%;border:0;background:rgba(58,217,255,.14);color:var(--c-main);display:grid;place-items:center}
.drawer-link{display:block;padding:13px 4px;color:var(--tx-2);font-size:15.5px;border-bottom:1px solid var(--line)}
.drawer-link:hover,.drawer-link.active{color:var(--c-main)}
.drawer-foot{margin-top:22px;display:grid;gap:12px}
/* ===== 分类头区 ===== */
.cat-hero{
  position:relative;overflow:hidden;padding:52px 0 48px;
  background:linear-gradient(180deg,rgba(14,24,48,.92) 0%,rgba(5,8,15,1) 100%);
  border-bottom:1px solid var(--line);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/20fdc050ddbac359.webp') center/cover no-repeat;
  opacity:.16;filter:saturate(120%);
}
.cat-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(58,217,255,.55),rgba(138,123,255,.35),transparent);
}
.cat-hero .container-x{position:relative;z-index:1}
.cat-hero-grid{display:grid;grid-template-columns:1.55fr .85fr;gap:48px;align-items:center}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--tx-3);margin-bottom:16px}
.crumb a{color:var(--tx-2)}
.crumb a:hover{color:var(--c-main)}
.crumb span.sep{color:rgba(120,190,255,.35)}
.cat-hero h1{font-size:clamp(28px,3.6vw,44px);line-height:1.2;margin-bottom:16px}
.cat-hero h1 .hi{color:var(--c-main)}
.cat-desc{color:var(--tx-2);font-size:15.5px;max-width:640px}
.cat-desc p+p{margin-top:8px}
.cat-meta{display:grid;gap:16px;padding-left:26px;border-left:1px solid rgba(58,217,255,.28)}
.meta-item{display:grid;gap:2px}
.meta-item .k{font-size:12.5px;color:var(--tx-3);letter-spacing:.06em}
.meta-item .v{font-size:15px;color:var(--tx);font-weight:600;font-variant-numeric:tabular-nums}
/* ===== 筛选条 ===== */
.filter-bar{padding:22px 0;background:var(--bg-1);border-bottom:1px solid var(--line)}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.chip-row .lead{font-size:13px;color:var(--tx-3);margin-right:4px}
.chip{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;
  border:1px solid rgba(120,190,255,.18);background:rgba(14,24,48,.7);color:var(--tx-2);
  font-size:14px;cursor:pointer;
  transition:color .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease);
}
.chip:hover{color:var(--tx);border-color:rgba(58,217,255,.45);background:rgba(58,217,255,.08)}
.chip.is-on{
  color:var(--c-main);border-color:rgba(58,217,255,.6);background:rgba(58,217,255,.10);
  box-shadow:0 0 0 1px rgba(58,217,255,.25),0 8px 20px rgba(58,217,255,.14);
}
/* ===== 列表 ===== */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.post-card{overflow:hidden;display:flex;flex-direction:column}
.post-card .media-frame{border-radius:0;border:0;border-bottom:1px solid rgba(120,190,255,.12)}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-title{font-size:17.5px;line-height:1.55;margin:0}
.post-title a{color:var(--tx);display:block}
.post-title a:hover{color:var(--c-main)}
.post-sum{font-size:14px;color:var(--tx-2);line-height:1.78;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{margin-top:auto;padding-top:12px;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--tx-3);border-top:1px dashed rgba(120,190,255,.12)}
.post-badges{display:flex;flex-wrap:wrap;gap:8px}
.list-more{display:flex;justify-content:center;margin-top:40px}
.empty-box{
  border:1px dashed rgba(120,190,255,.24);border-radius:var(--r-card);
  padding:48px 24px;text-align:center;background:rgba(14,24,48,.5);
}
.empty-box .ico{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;margin:0 auto 16px;color:var(--c-main);border:1px solid rgba(58,217,255,.3);background:rgba(58,217,255,.08)}
.empty-box h3{font-size:18px;margin-bottom:8px}
.empty-box p{color:var(--tx-2);font-size:14.5px;margin-bottom:20px}
.empty-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}
/* ===== 入门要点 ===== */
.guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.guide-card{padding:26px 24px}
.guide-ico{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;margin-bottom:16px;
  color:var(--c-main);border:1px solid rgba(58,217,255,.28);background:rgba(58,217,255,.08);
}
.guide-card h3{font-size:17.5px;margin-bottom:10px}
.guide-card p{color:var(--tx-2);font-size:14.5px;line-height:1.8}
/* ===== 精选话题列表 ===== */
.pick-list{border-top:1px solid var(--line)}
.pick-item{
  display:flex;align-items:center;gap:18px;padding:18px 4px;border-bottom:1px solid var(--line);
  transition:background .25s var(--ease),padding-left .25s var(--ease);
}
.pick-item:hover{background:rgba(58,217,255,.04);padding-left:10px}
.pick-num{font-size:14px;font-weight:700;color:var(--c-main);width:34px;flex-shrink:0;font-variant-numeric:tabular-nums}
.pick-title{flex:1;min-width:0;font-size:16px;color:var(--tx);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pick-item:hover .pick-title{color:var(--c-main)}
.pick-meta{font-size:12.5px;color:var(--tx-3);flex-shrink:0}
/* ===== 安全须知 ===== */
.safety-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.safety-copy h2{font-size:clamp(24px,2.6vw,34px);margin-bottom:14px}
.safety-copy p{color:var(--tx-2);font-size:15px;margin-bottom:12px}
.safety-list li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed rgba(120,190,255,.12);
}
.safety-list li:last-child{border-bottom:0}
.safety-list .tick{
  width:26px;height:26px;border-radius:9px;flex-shrink:0;display:grid;place-items:center;
  color:var(--ok);border:1px solid rgba(56,224,168,.3);background:rgba(56,224,168,.08);
}
.safety-list .txt{font-size:14.5px;color:var(--tx-2);line-height:1.78}
.safety-list .txt b{color:var(--tx);font-weight:600}
.warn-card{
  margin-top:22px;padding:18px 20px;border-radius:var(--r-m);
  background:rgba(255,194,75,.07);border:1px solid rgba(255,194,75,.24);
  display:flex;gap:12px;align-items:flex-start;
}
.warn-card .wi{color:var(--warn);flex-shrink:0;margin-top:2px}
.warn-card p{font-size:13.5px;color:#F0DDB4;line-height:1.75}
/* ===== FAQ ===== */
.faq-wrap{max-width:900px}
.accordion-item{
  background:var(--bg-2);border:1px solid rgba(120,190,255,.12)!important;
  border-radius:var(--r-m)!important;margin-bottom:12px;overflow:hidden;
}
.accordion-button{
  background:transparent;color:var(--tx);font-size:17px;font-weight:600;
  padding:18px 22px;box-shadow:none!important;line-height:1.6;
}
.accordion-button:not(.collapsed){background:rgba(58,217,255,.07);color:var(--c-main)}
.accordion-button::after{filter:brightness(0) invert(1);opacity:.75}
.accordion-button:not(.collapsed)::after{filter:brightness(0) saturate(100%) invert(78%) sepia(52%) saturate(1500%) hue-rotate(155deg)}
.accordion-body{color:var(--tx-2);font-size:15px;line-height:1.85;padding:0 22px 20px}
/* ===== 收尾 CTA ===== */
.cat-cta{padding:0 0 88px}
.cta-band{
  position:relative;overflow:hidden;display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:36px 40px;border-radius:var(--r-l);
  background:var(--glass);border:1px solid var(--glass-bd);
  backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh-card);flex-wrap:wrap;
}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-140px;width:420px;height:320px;
  background:radial-gradient(closest-side,rgba(58,217,255,.14),transparent 72%);pointer-events:none;
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:8px}
.cta-band p{color:var(--tx-2);font-size:14.5px}
.cta-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;position:relative;z-index:1}
/* ===== Footer ===== */
.site-footer{background:var(--bg-1);border-top:1px solid rgba(120,190,255,.12);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16.5px;color:var(--tx);margin-bottom:14px}
.footer-desc{color:var(--tx-2);font-size:14px;line-height:1.8;max-width:320px}
.social-row{display:flex;gap:10px;margin-top:18px}
.social-row span{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;color:var(--tx-2);
  border:1px solid rgba(120,190,255,.16);background:rgba(14,24,48,.7);cursor:pointer;
  transition:color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease);
}
.social-row span:hover{color:var(--c-main);border-color:rgba(58,217,255,.5);transform:translateY(-2px)}
.footer-col h4{font-size:14.5px;color:var(--tx);margin-bottom:16px;letter-spacing:.04em}
.footer-col li{margin-bottom:10px}
.footer-col a,.footer-col .plain{color:var(--tx-2);font-size:14px}
.footer-col a:hover{color:var(--c-main)}
.qr-box{
  margin-top:16px;width:104px;height:104px;border-radius:14px;display:grid;place-items:center;
  border:1px dashed rgba(120,190,255,.28);background:rgba(14,24,48,.6);
  color:var(--tx-3);font-size:12px;
}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;display:flex;justify-content:space-between;
  gap:14px;flex-wrap:wrap;color:var(--tx-3);font-size:13px;
}
/* ===== 响应式 ===== */
@media (min-width:1400px){.container-x{max-width:1280px}}
@media (max-width:1199.98px){
  .nav-search input{width:130px}
  .nav-channels{gap:16px}
}
@media (max-width:991.98px){
  .nav-toggle{display:flex}
  .nav-wrap{height:60px;gap:14px}
  .nav-right .nav-search,.nav-right .link-plain{display:none}
  .section{padding:64px 0}
  .cat-hero-grid{grid-template-columns:1fr;gap:28px}
  .cat-meta{grid-template-columns:repeat(3,minmax(0,1fr));padding-left:0;border-left:0;border-top:1px solid rgba(58,217,255,.28);padding-top:18px}
  .safety-grid{grid-template-columns:1fr;gap:28px}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .guide-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cat-cta{padding-bottom:64px}
}
@media (max-width:767.98px){
  .section{padding:44px 0}
  .cat-hero{padding:36px 0 34px}
  .post-grid{grid-template-columns:1fr}
  .guide-grid{grid-template-columns:1fr}
  .cta-band{padding:26px 22px;gap:18px}
  .pick-item{gap:12px;flex-wrap:wrap}
  .pick-title{white-space:normal}
  .pick-meta{width:100%;padding-left:52px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-desc{max-width:none}
  .btn-x{height:42px;padding:0 20px}
  .cat-meta{grid-template-columns:1fr;gap:12px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .card-x:hover{transform:none}
}

/* roulang page: article */
:root{
  --bg-0:#05080F;--bg-1:#0A1120;--bg-2:#0E1830;
  --glass:rgba(20,32,56,.55);--glass-bd:rgba(120,190,255,.14);
  --c-main:#3AD9FF;--c-main-h:#6FE6FF;
  --c-accent:#FF6A5E;--c-accent-h:#FF8878;
  --c-violet:#8A7BFF;
  --tx:#EAF2FF;--tx-2:#9FB2CC;--tx-3:#6B7F9B;
  --ok:#38E0A8;--warn:#FFC24B;
  --r-s:10px;--r-m:16px;--r-l:22px;--r-card:18px;
  --sh-card:0 10px 30px rgba(2,8,20,.55);
  --sh-glow:0 0 0 1px rgba(58,217,255,.35),0 12px 34px rgba(58,217,255,.22);
  --sh-accent:0 0 0 1px rgba(255,106,94,.4),0 12px 30px rgba(255,106,94,.28);
  --line:rgba(120,190,255,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-0);color:var(--tx);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-main);text-decoration:none;transition:color .25s var(--ease),opacity .25s var(--ease)}
a:hover{color:var(--c-main-h)}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-main);outline-offset:2px}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1400px){.container-x{max-width:1280px}}
.section{position:relative;padding:88px 0;border-top:1px solid var(--line)}
.section.alt{background:var(--bg-1)}
.section.alt::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(720px 320px at 15% 0%,rgba(58,217,255,.10),transparent 62%);
}
.section>.container-x{position:relative;z-index:1}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.14em;
  color:var(--c-main);text-transform:uppercase;margin-bottom:14px;
}
.sec-eyebrow::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,var(--c-main),transparent)}
.sec-title{font-size:clamp(24px,2.6vw,34px);margin:0 0 14px;font-weight:700;line-height:1.3}
.sec-desc{color:var(--tx-2);font-size:15px;max-width:640px;margin:0 0 28px}
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.btn-x:active{transform:translateY(1px)}
.btn-accent{background:var(--c-accent);color:#0A1120;box-shadow:var(--sh-accent)}
.btn-accent:hover{background:var(--c-accent-h);color:#0A1120;box-shadow:0 0 0 1px rgba(255,106,94,.55),0 16px 38px rgba(255,106,94,.36);transform:translateY(-1px)}
.btn-cyan{background:transparent;border-color:rgba(58,217,255,.55);color:var(--c-main)}
.btn-cyan:hover{background:rgba(58,217,255,.10);border-color:var(--c-main);color:var(--c-main-h);box-shadow:var(--sh-glow);transform:translateY(-1px)}
.btn-quiet{background:transparent;color:var(--tx-2);padding:0 12px}
.btn-quiet:hover{color:var(--c-main)}
.btn-lg{height:48px;padding:0 30px;font-size:16px}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.text-link{color:var(--c-main);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.text-link:hover{text-decoration:underline;text-underline-offset:4px}
.badge-pill{display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;font-size:12px;font-weight:600;line-height:1;white-space:nowrap}
.badge-cyan{background:rgba(58,217,255,.14);color:var(--c-main);border:1px solid rgba(58,217,255,.24)}
.badge-violet{background:rgba(138,123,255,.16);color:#B3A8FF;border:1px solid rgba(138,123,255,.26)}
.badge-accent{background:rgba(255,106,94,.14);color:#FF9C93;border:1px solid rgba(255,106,94,.26)}
.badge-ok{background:rgba(56,224,168,.13);color:var(--ok);border:1px solid rgba(56,224,168,.24)}
.badge-muted{background:rgba(159,178,204,.10);color:var(--tx-2);border:1px solid rgba(159,178,204,.18)}
.card-x{
  background:var(--bg-2);border:1px solid rgba(120,190,255,.12);border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.card-x:hover{transform:translateY(-4px);border-color:rgba(58,217,255,.45);box-shadow:var(--sh-glow)}
.media-frame{
  position:relative;overflow:hidden;border-radius:var(--r-card);
  background:linear-gradient(135deg,#12203a,#0A1120);
  border:1px solid rgba(120,190,255,.14);aspect-ratio:16/10;
}
.media-frame img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.media-frame.v45{aspect-ratio:4/5}
.media-frame.v169{aspect-ratio:16/9}
.card-x:hover .media-frame img{transform:scale(1.03)}
/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:1035;
  background:rgba(5,8,15,.72);
  backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--line);
  transition:background .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header.scrolled{background:rgba(5,8,15,.94);border-bottom-color:rgba(120,190,255,.18);box-shadow:0 8px 30px rgba(2,8,20,.6)}
.nav-wrap{height:72px;display:flex;align-items:center;gap:26px}
.brand{display:flex;align-items:center;gap:10px;color:var(--tx);font-weight:700;font-size:17px;flex-shrink:0}
.brand:hover{color:var(--tx)}
.brand-mark{
  width:28px;height:28px;border-radius:9px;display:grid;place-items:center;
  border:1px solid rgba(58,217,255,.6);background:rgba(58,217,255,.10);color:var(--c-main);
  box-shadow:0 0 18px rgba(58,217,255,.35);
}
.nav-channels{display:flex;align-items:center;gap:22px;flex:1;min-width:0}
.nav-ch{position:relative;color:var(--tx-2);font-size:15px;padding:6px 0;white-space:nowrap}
.nav-ch:hover{color:var(--tx)}
.nav-ch.active{color:var(--c-main)}
.nav-ch.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;
  background:var(--c-main);box-shadow:0 0 10px rgba(58,217,255,.8);
}
.nav-right{display:flex;align-items:center;gap:14px;flex-shrink:0}
.nav-search{
  display:flex;align-items:center;height:40px;padding:0 6px 0 16px;border-radius:999px;
  background:rgba(14,24,48,.85);border:1px solid rgba(120,190,255,.16);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.nav-search:focus-within{border-color:rgba(58,217,255,.6);box-shadow:0 0 0 3px rgba(58,217,255,.15)}
.nav-search input{
  width:176px;background:transparent;border:0;outline:0;color:var(--tx);
  font-size:13.5px;font-family:inherit;
}
.nav-search input::placeholder{color:var(--tx-3)}
.nav-search button{
  width:30px;height:30px;border-radius:50%;border:0;background:rgba(58,217,255,.14);
  color:var(--c-main);display:grid;place-items:center;cursor:pointer;
  transition:background .25s var(--ease);
}
.nav-search button:hover{background:rgba(58,217,255,.28)}
.nav-toggle{
  margin-left:auto;width:42px;height:42px;border-radius:12px;border:1px solid rgba(120,190,255,.2);
  background:rgba(14,24,48,.85);color:var(--c-main);display:grid;place-items:center;cursor:pointer;
}
.mobile-nav{background:var(--bg-1);color:var(--tx);border-left:1px solid rgba(120,190,255,.16);width:310px}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.mobile-nav .btn-close{filter:invert(1) grayscale(1) brightness(1.6)}
.mobile-nav .offcanvas-body{padding:20px;display:flex;flex-direction:column;gap:8px}
.mobile-nav .nav-search{width:100%;margin-bottom:12px}
.mobile-nav .nav-search input{width:100%}
.m-link{
  color:var(--tx-2);padding:11px 4px;border-bottom:1px solid rgba(120,190,255,.07);
  font-size:15px;font-weight:500;
}
.m-link:hover{color:var(--c-main)}
/* ===== Article hero ===== */
.post-hero{
  position:relative;padding:34px 0 30px;border-bottom:1px solid var(--line);
  background:radial-gradient(680px 260px at 10% -10%,rgba(58,217,255,.12),transparent 64%);
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--tx-3);margin-bottom:22px}
.crumbs a{color:var(--tx-2)}
.crumbs a:hover{color:var(--c-main)}
.crumbs .sep{color:rgba(107,127,155,.7)}
.crumbs .crumb-current{color:var(--tx-2);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.post-head{display:flex;gap:28px;align-items:flex-end;justify-content:space-between;flex-wrap:wrap}
.post-head-main{max-width:800px;min-width:0}
.post-tagline{display:flex;align-items:center;gap:10px;margin-bottom:16px;flex-wrap:wrap}
.post-tagline .dot{width:4px;height:4px;border-radius:50%;background:var(--tx-3)}
.post-tagline .ptime{font-size:13px;color:var(--tx-3);font-variant-numeric:tabular-nums}
.post-title{font-size:clamp(26px,3.4vw,42px);line-height:1.24;font-weight:700;margin:0 0 18px;letter-spacing:-.01em}
.post-meta{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:13px;color:var(--tx-3)}
.post-meta span{display:inline-flex;align-items:center;gap:6px}
.share-row{display:flex;align-items:center;gap:10px;flex-shrink:0}
.share-row .share-label{font-size:12.5px;color:var(--tx-3);letter-spacing:.04em}
.share-btn{
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  background:rgba(14,24,48,.9);border:1px solid rgba(120,190,255,.18);color:var(--tx-2);
  cursor:pointer;transition:all .25s var(--ease);
}
.share-btn:hover{color:var(--c-main);border-color:rgba(58,217,255,.55);box-shadow:var(--sh-glow);transform:translateY(-2px)}
/* ===== Article body ===== */
.post-body-section{padding:52px 0 84px;position:relative}
.post-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:32px;align-items:start}
.post-content{
  padding:36px 40px 40px;border-radius:var(--r-l);
}
.post-content:hover{transform:none;box-shadow:var(--sh-card);border-color:rgba(120,190,255,.12)}
.article-body{width:min(760px,100%);font-size:17px;line-height:1.9;color:#D6E2F4;word-break:break-word}
.article-body>p:first-child{font-size:17.5px;color:#E4EDFA}
.article-body h2{
  position:relative;font-size:24px;line-height:1.42;font-weight:700;color:var(--tx);
  margin:40px 0 16px;padding-left:15px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.26em;bottom:.26em;width:3px;border-radius:2px;
  background:linear-gradient(180deg,var(--c-main),var(--c-violet));
  box-shadow:0 0 12px rgba(58,217,255,.6);
}
.article-body h3{font-size:20px;line-height:1.5;font-weight:600;color:var(--tx);margin:28px 0 12px}
.article-body h4{font-size:17px;font-weight:600;color:var(--tx);margin:22px 0 10px}
.article-body p{margin:0 0 18px}
.article-body a{color:var(--c-main);text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(58,217,255,.32)}
.article-body a:hover{color:var(--c-main-h);text-decoration-color:var(--c-main)}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px}
.article-body li{margin-bottom:8px}
.article-body ul li::marker{color:var(--c-main)}
.article-body ol li::marker{color:var(--c-main);font-weight:600}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;background:var(--glass);
  border-left:3px solid var(--c-main);border-radius:0 var(--r-m) var(--r-m) 0;
  color:var(--tx-2);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:22px 0;border:1px solid rgba(120,190,255,.14)}
.article-body figure{margin:22px 0}
.article-body figure img{margin:0}
.article-body figcaption{font-size:12.5px;color:var(--tx-3);text-align:center;margin-top:10px}
.article-body code{
  background:rgba(58,217,255,.10);color:var(--c-main);border-radius:6px;
  padding:2px 7px;font-size:14.5px;
}
.article-body pre{
  background:#08101F;border:1px solid rgba(120,190,255,.14);border-radius:var(--r-m);
  padding:18px 20px;overflow:auto;margin:0 0 18px;font-size:14px;
}
.article-body pre code{background:transparent;padding:0;color:var(--tx-2)}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 20px;font-size:15px}
.article-body th,.article-body td{border:1px solid rgba(120,190,255,.14);padding:10px 14px;text-align:left}
.article-body th{background:rgba(58,217,255,.08);color:var(--tx);font-weight:600}
.article-body hr{border:0;border-top:1px solid var(--line);margin:30px 0}
.empty-state{text-align:center;padding:64px 20px}
.empty-state .es-icon{
  width:64px;height:64px;border-radius:20px;margin:0 auto 20px;display:grid;place-items:center;
  background:rgba(58,217,255,.10);border:1px solid rgba(58,217,255,.28);color:var(--c-main);
}
.empty-state h2{font-size:22px;margin:0 0 10px}
.empty-state p{color:var(--tx-2);font-size:15px;margin:0 auto 24px;max-width:440px}
/* ===== Sidebar ===== */
.post-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px}
.side-card{
  background:var(--bg-2);border:1px solid rgba(120,190,255,.12);border-radius:var(--r-card);
  padding:20px 22px;box-shadow:var(--sh-card);
}
.side-title{font-size:15px;font-weight:700;margin:0 0 14px;color:var(--tx);display:flex;align-items:center;gap:9px}
.side-title::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--c-main);box-shadow:0 0 8px rgba(58,217,255,.7)}
.side-meta{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.side-meta li{display:flex;justify-content:space-between;gap:12px;font-size:13.5px;color:var(--tx-3)}
.side-meta li strong{color:var(--tx-2);font-weight:600;text-align:right;word-break:break-all}
.topic-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.topic-list li a{
  display:flex;gap:10px;align-items:flex-start;padding:9px 6px;border-radius:var(--r-s);
  color:var(--tx-2);font-size:14px;line-height:1.6;transition:all .22s var(--ease);
}
.topic-list li a:hover{background:rgba(58,217,255,.08);color:var(--c-main);transform:translateX(2px)}
.topic-list .num{
  flex-shrink:0;font-size:12px;font-weight:700;color:var(--c-main);opacity:.75;
  font-variant-numeric:tabular-nums;padding-top:2px;
}
.dl-card{
  padding:22px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--glass-bd);
  backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh-card);
}
.dl-card h3{font-size:16px;margin:12px 0 8px;color:var(--tx);line-height:1.5}
.dl-card p{font-size:13.5px;color:var(--tx-2);margin:0 0 16px;line-height:1.75}
.dl-card .btn-x{width:100%}
.qr-box{
  margin-top:14px;height:74px;border-radius:var(--r-m);border:1px dashed rgba(120,190,255,.3);
  display:grid;place-items:center;font-size:12px;color:var(--tx-3);letter-spacing:.06em;
  background:rgba(8,16,31,.6);
}
/* ===== Tags + author ===== */
.meta-section{padding:0 0 72px;border-top:0}
.meta-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:22px;max-width:900px}
.tag-block h2,.author-block h2{font-size:14px;letter-spacing:.08em;color:var(--tx-3);font-weight:600;margin:0 0 14px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag-chip{
  display:inline-flex;align-items:center;height:32px;padding:0 15px;border-radius:999px;
  background:rgba(138,123,255,.12);border:1px solid rgba(138,123,255,.26);
  color:#B3A8FF;font-size:13px;font-weight:500;
  transition:all .25s var(--ease);
}
.tag-chip:hover{background:rgba(138,123,255,.22);border-color:rgba(138,123,255,.5);color:#C9C0FF;transform:translateY(-2px)}
.author-card{
  display:flex;gap:18px;align-items:flex-start;padding:24px;
  background:var(--bg-2);border:1px solid rgba(120,190,255,.12);border-radius:var(--r-card);
  box-shadow:var(--sh-card);
}
.author-avatar{
  width:56px;height:56px;border-radius:50%;flex-shrink:0;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(58,217,255,.24),rgba(138,123,255,.28));
  border:1px solid rgba(58,217,255,.45);color:var(--c-main);font-weight:700;font-size:16px;
  box-shadow:0 0 20px rgba(58,217,255,.25);
}
.author-info h3{font-size:16px;margin:2px 0 6px;color:var(--tx)}
.author-info p{font-size:13.5px;color:var(--tx-2);margin:0 0 10px;line-height:1.75}
/* ===== Download band ===== */
.band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:34px 38px;border-radius:var(--r-l);
  background:var(--glass);border:1px solid var(--glass-bd);
  backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh-card);position:relative;overflow:hidden;
}
.band::before{
  content:"";position:absolute;right:-60px;top:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(58,217,255,.16),transparent 68%);pointer-events:none;
}
.band-main{position:relative;z-index:1;max-width:560px}
.band-main h2{font-size:clamp(20px,2.2vw,26px);margin:12px 0 10px;line-height:1.45;color:var(--tx)}
.band-main p{font-size:14.5px;color:var(--tx-2);margin:0}
.band-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;position:relative;z-index:1}
.band-actions .qr-mini{
  width:88px;height:88px;border-radius:var(--r-m);border:1px dashed rgba(120,190,255,.3);
  display:grid;place-items:center;font-size:11.5px;color:var(--tx-3);text-align:center;
  background:rgba(8,16,31,.6);letter-spacing:.04em;line-height:1.4;
}
/* ===== Related ===== */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.rel-card{display:block;overflow:hidden;color:var(--tx)}
.rel-card:hover{color:var(--tx)}
.rel-card .media-frame{border-radius:var(--r-card) var(--r-card) 0 0;border:0;border-bottom:1px solid rgba(120,190,255,.12)}
.rel-body{padding:18px 20px 20px}
.rel-body h3{font-size:15.5px;line-height:1.55;margin:0 0 12px;color:var(--tx);font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--tx-3)}
/* ===== Back bar ===== */
.back-section{padding:0 0 88px;border-top:0}
.back-bar{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:26px 30px;border-radius:var(--r-l);background:var(--bg-2);
  border:1px solid rgba(120,190,255,.12);box-shadow:var(--sh-card);
}
.back-bar .bk-text{font-size:14px;color:var(--tx-2);margin:0}
.back-bar .bk-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
/* ===== Footer ===== */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:var(--tx);margin-bottom:14px}
.footer-desc{font-size:13.5px;color:var(--tx-3);line-height:1.85;margin:0 0 18px;max-width:300px}
.social-row{display:flex;gap:10px}
.social-row span{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:rgba(14,24,48,.9);border:1px solid rgba(120,190,255,.16);color:var(--tx-2);
  transition:all .25s var(--ease);
}
.social-row span:hover{color:var(--c-main);border-color:rgba(58,217,255,.5);transform:translateY(-2px)}
.footer-col h4{font-size:14px;font-weight:600;color:var(--tx);margin:0 0 16px;letter-spacing:.04em}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px}
.footer-col ul li a{font-size:13.5px;color:var(--tx-3)}
.footer-col ul li a:hover{color:var(--c-main)}
.footer-col ul li .plain{font-size:13.5px;color:var(--tx-3)}
.footer-col .qr-box{width:96px;height:96px;margin-top:16px}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 28px;display:flex;justify-content:space-between;
  gap:14px;flex-wrap:wrap;font-size:12.5px;color:var(--tx-3);
}
@media (max-width:1199px){
  .post-layout{grid-template-columns:minmax(0,1fr) 288px;gap:26px}
  .nav-search input{width:140px}
}
@media (max-width:991px){
  .section{padding:64px 0}
  .post-body-section{padding:40px 0 64px}
  .post-layout{grid-template-columns:minmax(0,1fr)}
  .post-side{position:static;flex-direction:row;flex-wrap:wrap}
  .post-side>*{flex:1 1 260px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .post-content{padding:28px 24px 32px}
  .article-body{width:100%}
}
@media (max-width:767px){
  .nav-wrap{height:60px;gap:12px}
  .brand{font-size:16px}
  .post-hero{padding:24px 0 22px}
  .post-head{gap:20px}
  .post-title{font-size:clamp(23px,6vw,30px)}
  .share-row .share-label{display:none}
  .section{padding:44px 0}
  .post-body-section{padding:32px 0 48px}
  .post-content{padding:22px 18px 26px}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:21px;margin:30px 0 12px}
  .article-body h3{font-size:18px}
  .related-grid{grid-template-columns:1fr}
  .band{padding:26px 22px}
  .band-actions{width:100%}
  .band-actions .btn-x{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:32px}
  .back-bar{padding:22px 20px}
  .back-bar .bk-actions{width:100%}
  .back-bar .bk-actions .btn-x{flex:1 1 100%}
  .meta-section{padding:0 0 48px}
  .back-section{padding:0 0 56px}
}
@media (max-width:520px){
  .container-x{padding:0 16px}
  .author-card{flex-direction:column;gap:14px}
  .post-side{flex-direction:column}
  .post-side>*{flex:1 1 auto}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .card-x:hover,.btn-x:hover,.nav-ch:hover{transform:none!important}
}