/* roulang page: index */
:root{
  --primary:#123B33;
  --primary-soft:rgba(18,59,51,.08);
  --primary-line:rgba(18,59,51,.25);
  --accent:#E2673A;
  --accent-dark:#C9562C;
  --mark:#CDF564;
  --bg:#F6F3EE;
  --card:#FFFFFF;
  --dark:#0E1513;
  --soft:#EFEAE2;
  --text:#171A18;
  --text-2:#5B625E;
  --text-3:#8A8F8B;
  --line:#E3DED6;
  --line-strong:#C9C2B7;
  --ok:#2F7D5C;
  --warn:#B4552F;
  --info:#3B6B7A;
  --radius-lg:18px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(16,24,20,.05);
  --shadow-2:0 10px 30px -14px rgba(16,24,20,.20);
  --shadow-3:0 24px 60px -24px rgba(16,24,20,.28);
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--font-sans);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.22;
  color:var(--text);
}
h1{font-size:clamp(30px,4.4vw,56px);font-weight:900;line-height:1.12}
h2{font-size:clamp(24px,2.7vw,36px)}
h3{font-size:clamp(18px,1.6vw,20px)}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
a{color:var(--primary);text-decoration:none;transition:color .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease)}
a:hover{color:var(--accent)}
img{max-width:100%;display:block;border-radius:12px}
ul,ol{margin:0 0 1em;padding-left:1.2em}
li{margin-bottom:.4em}
button{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid rgba(18,59,51,.45);outline-offset:2px;border-radius:8px}
::selection{background:var(--mark);color:var(--dark)}
.mono{font-family:var(--font-mono);font-size:13px;letter-spacing:-.01em}

/* ---------- 容器 ---------- */
.container{width:100%;max-width:1248px;margin:0 auto;padding:0 24px}
.section{padding:96px 0;position:relative}
.section--soft{background:var(--soft)}
.section--dark{background:var(--dark);color:var(--bg)}
.section--dark h2,.section--dark h3{color:#FFFFFF}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head p{color:var(--text-2);margin:10px 0 0;max-width:640px}
.section--dark .section-head p{color:rgba(246,243,238,.72)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--text-3);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);display:inline-block;border-radius:2px}
.link-more{
  color:var(--primary);font-weight:600;position:relative;padding-bottom:2px;
  background-image:linear-gradient(var(--accent),var(--accent));
  background-repeat:no-repeat;background-size:0% 2px;background-position:left bottom;
  transition:background-size .22s var(--ease),color .22s var(--ease);
}
.link-more:hover{background-size:100% 2px;color:var(--primary)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--radius-sm);border:1.5px solid transparent;
  font-weight:600;font-size:15px;line-height:1;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
  text-decoration:none;
}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 22px -12px rgba(226,103,58,.6)}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 14px 28px -14px rgba(226,103,58,.7)}
.btn-accent:active{transform:translateY(0);box-shadow:var(--shadow-1)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:#0d2c26;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-outline{border-color:var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:var(--primary-soft);color:var(--primary);border-color:var(--primary)}
.btn-outline-light{border-color:rgba(246,243,238,.35);color:var(--bg);background:transparent}
.btn-outline-light:hover{background:rgba(246,243,238,.1);color:#fff;border-color:rgba(246,243,238,.6)}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:9px}
.btn-lg{padding:16px 32px;font-size:16px}
.btn-block{width:100%}
.btn-meta{display:flex;gap:10px;align-items:center;flex-wrap:wrap;font-family:var(--font-mono);font-size:12px;color:var(--text-3);margin-top:12px}

/* ---------- 徽标 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12px;letter-spacing:.06em;
  background:var(--primary-soft);color:var(--primary);font-weight:600;
}
.badge-mark{background:var(--mark);color:#20301A}
.badge-accent{background:var(--accent);color:#fff}
.badge-line{background:transparent;border:1px solid var(--line-strong);color:var(--text-2)}

/* ---------- 头部 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(246,243,238,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.brand-row{border-bottom:1px solid var(--line)}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:68px}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--primary);color:var(--mark);
  display:grid;place-items:center;font-family:var(--font-mono);font-weight:700;font-size:19px;
  box-shadow:var(--shadow-1);flex:0 0 auto;
}
.brand-text{font-weight:800;font-size:18px;letter-spacing:-.01em;line-height:1.1}
.brand-text small{display:block;font-size:11px;font-weight:500;color:var(--text-3);letter-spacing:.08em;font-family:var(--font-mono);text-transform:uppercase}
.brand-actions{display:flex;align-items:center;gap:10px}
.status-chip{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);padding:6px 12px;border:1px solid var(--line);border-radius:999px;background:var(--card)}
.status-chip .dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(47,125,92,.15)}
.nav-toggle{display:none;align-items:center;gap:8px;background:var(--card);border:1px solid var(--line);border-radius:9px;padding:9px 14px;color:var(--text);font-weight:600;cursor:pointer}
.channel-row{position:sticky;top:0;background:rgba(246,243,238,.96)}
.channel-inner{display:flex;align-items:center;gap:8px;min-height:52px;flex-wrap:wrap}
.channel-link{
  position:relative;padding:8px 4px;margin-right:22px;font-weight:600;font-size:15px;color:var(--text-2);
  transition:color .22s var(--ease);
}
.channel-link::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;background:var(--primary);
  transform:translateX(-50%);transition:width .22s var(--ease);
}
.channel-link:hover{color:var(--primary)}
.channel-link:hover::after{width:100%}
.channel-link.is-active{color:var(--primary);font-weight:800}
.channel-link.is-active::after{width:100%;background:var(--accent)}
.channel-link.is-active::before{
  content:"";position:absolute;left:-11px;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--mark);
}

/* ---------- Hero ---------- */
.hero{
  padding:88px 0 96px;position:relative;overflow:hidden;
  background-image:linear-gradient(rgba(18,59,51,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(18,59,51,.04) 1px,transparent 1px);
  background-size:34px 34px;
  border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px;align-items:center}
.hero h1{margin:16px 0 20px;max-width:14em}
.hero h1 .hl{position:relative;white-space:nowrap}
.hero h1 .hl::after{content:"";position:absolute;left:0;right:0;bottom:6px;height:9px;background:var(--mark);opacity:.55;z-index:-1;border-radius:3px}
.hero-lead{font-size:17px;color:var(--text-2);max-width:36em}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.hero-facts{
  display:flex;gap:12px 26px;flex-wrap:wrap;margin-top:26px;padding-top:20px;
  border-top:1px dashed var(--line-strong);
}
.hero-facts span{font-family:var(--font-mono);font-size:13px;color:var(--text-3)}
.hero-facts strong{color:var(--text);font-weight:600}
.hero-visual{position:relative}
.hero-shot{
  border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-3);background:var(--card);
  animation:floaty 8s ease-in-out infinite;
}
.hero-shot img{width:100%;height:auto;border-radius:0;aspect-ratio:4/3;object-fit:cover}
.hero-tagcard{
  position:absolute;right:-12px;bottom:-22px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:16px 20px;box-shadow:var(--shadow-2);min-width:190px;
}
.hero-tagcard .num{font-family:var(--font-mono);font-size:24px;font-weight:700;color:var(--primary);line-height:1.1}
.hero-tagcard .cap{font-size:12px;color:var(--text-3);letter-spacing:.04em;margin-top:4px}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}

/* ---------- 入口卡 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
.entry-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  box-shadow:var(--shadow-1);
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--primary-line)}
.entry-card .thumb{aspect-ratio:16/9;overflow:hidden}
.entry-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0}
.entry-card .body{padding:26px 28px 30px;display:flex;flex-direction:column;gap:12px;flex:1}
.entry-card h3{font-size:21px}
.entry-card p{color:var(--text-2);font-size:15.5px}
.entry-list{list-style:none;padding:0;margin:4px 0 0}
.entry-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--text-2);margin-bottom:6px}
.entry-list li::before{content:"";position:absolute;left:0;top:.65em;width:8px;height:8px;border-radius:2px;background:var(--primary);opacity:.75}
.entry-foot{margin-top:auto;padding-top:10px}

/* ---------- 轮播 ---------- */
.feature-rail{
  display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 26px;margin:0 -4px;
  scrollbar-width:none;
}
.feature-rail::-webkit-scrollbar{display:none}
.feature-card{
  scroll-snap-align:start;flex:0 0 340px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--primary-line)}
.feature-card.is-main{flex:0 0 540px}
.feature-card .shot{aspect-ratio:16/10;overflow:hidden;background:var(--soft)}
.feature-card .shot img{width:100%;height:100%;object-fit:cover;border-radius:0}
.feature-card .body{padding:22px 24px 26px}
.feature-card .idx{font-family:var(--font-mono);font-size:13px;color:var(--text-3);letter-spacing:.06em}
.feature-card h3{margin:8px 0 8px;font-size:19px}
.feature-card p{font-size:14.5px;color:var(--text-2);margin:0}
.rail-progress{height:4px;border-radius:999px;background:var(--line);overflow:hidden;max-width:420px}
.rail-progress i{display:block;height:100%;width:0;background:var(--accent);transition:width .25s linear}

/* ---------- 系统要求 ---------- */
.spec-wrap{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,6fr);gap:44px;align-items:start}
.platform-list{display:flex;flex-direction:column;gap:14px}
.platform-item{
  display:flex;align-items:center;gap:16px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:16px 20px;box-shadow:var(--shadow-1);
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.platform-item:hover{border-color:var(--primary-line);transform:translateY(-1px)}
.platform-item i{font-size:22px;color:var(--primary);width:26px;text-align:center}
.platform-item b{font-weight:700;font-size:15.5px}
.platform-item span{display:block;font-size:13px;color:var(--text-3);font-family:var(--font-mono)}
.spec-list{display:flex;flex-direction:column;gap:14px}
.spec-row{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 22px 20px 26px;box-shadow:var(--shadow-1);
}
.spec-row::before{content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:3px;background:var(--primary)}
.spec-row h3{font-size:17px;margin-bottom:10px}
.spec-cols{display:grid;grid-template-columns:1fr 1fr;gap:8px 22px;border-top:1px dashed var(--line-strong);padding-top:12px}
.spec-cols .k{font-size:12px;color:var(--text-3);letter-spacing:.06em;font-family:var(--font-mono)}
.spec-cols .v{font-size:14.5px;color:var(--text-2);font-family:var(--font-mono)}

/* ---------- 评价墙 ---------- */
.review-wrap{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:36px;align-items:start}
.review-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.review-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px 26px;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.review-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--primary-line)}
.review-card:nth-child(2){margin-top:34px}
.review-card:nth-child(4){margin-top:18px}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.avatar{
  width:42px;height:42px;border-radius:12px;background:var(--primary);color:var(--mark);
  display:grid;place-items:center;font-weight:700;font-size:16px;flex:0 0 auto;
}
.review-top .who{font-weight:700;font-size:15px;line-height:1.2}
.review-top .src{font-size:12px;color:var(--text-3);font-family:var(--font-mono)}
.stars{color:var(--accent);font-size:13px;letter-spacing:2px;margin-bottom:8px}
.review-card p{font-size:14.8px;color:var(--text-2);margin:0}
.score-card{
  background:var(--dark);color:var(--bg);border-radius:var(--radius-lg);padding:30px 28px;
  box-shadow:var(--shadow-2);position:sticky;top:130px;
}
.score-card .big{font-family:var(--font-mono);font-size:56px;font-weight:700;line-height:1;color:#fff}
.score-card .big span{font-size:20px;color:rgba(246,243,238,.6)}
.score-card .cap{font-size:13.5px;color:rgba(246,243,238,.7);margin-top:10px}
.score-bars{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.score-bars .row{display:flex;align-items:center;gap:12px;font-family:var(--font-mono);font-size:12px;color:rgba(246,243,238,.7)}
.score-bars .bar{flex:1;height:6px;border-radius:999px;background:rgba(246,243,238,.16);overflow:hidden}
.score-bars .bar i{display:block;height:100%;background:var(--mark)}

/* ---------- 下载区块 ---------- */
.download-panel{
  background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,0));
  border:1px solid rgba(246,243,238,.14);border-radius:var(--radius-lg);
  padding:46px 44px;text-align:center;box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.download-actions{display:flex;flex-wrap:wrap;gap:18px;justify-content:center;margin-top:32px}
.dl-item{min-width:236px;text-align:left;display:flex;flex-direction:column;gap:0}
.dl-item .btn{justify-content:flex-start;width:100%}
.dl-item .btn i{font-size:17px;width:20px;text-align:center}
.dl-item .meta{margin-top:10px;font-family:var(--font-mono);font-size:12px;color:rgba(246,243,238,.6);line-height:1.7}
.download-note{margin-top:28px;font-size:13px;color:rgba(246,243,238,.6);font-family:var(--font-mono);letter-spacing:.02em}

/* ---------- 资讯卡片 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
.news-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  display:flex;flex-direction:column;height:100%;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--primary-line)}
.news-card .cover{aspect-ratio:16/9;overflow:hidden;background:var(--soft)}
.news-card .cover img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s var(--ease)}
.news-card:hover .cover img{transform:scale(1.04)}
.news-card .body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.news-meta time{font-family:var(--font-mono);font-size:12px;color:var(--text-3)}
.news-card h3{font-size:18px;line-height:1.4}
.news-card h3 a{color:var(--text)}
.news-card h3 a:hover{color:var(--primary)}
.news-card .excerpt{
  font-size:14.5px;color:var(--text-2);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card .foot{margin-top:auto;padding-top:8px;display:flex;align-items:center;justify-content:space-between}
.empty-state{
  grid-column:1/-1;text-align:center;padding:60px 24px;border:1px dashed var(--line-strong);
  border-radius:var(--radius-lg);background:var(--card);
}
.empty-state img{width:120px;height:auto;margin:0 auto 16px;opacity:.35;border-radius:12px}
.empty-state p{color:var(--text-2);margin-bottom:12px}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,7fr);gap:44px;align-items:start}
.faq-aside{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow-1)}
.faq-aside p{font-size:14.5px;color:var(--text-2)}
.faq-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:border-color .22s var(--ease),box-shadow .22s var(--ease)}
.faq-item.is-open{border-color:var(--primary-line);box-shadow:var(--shadow-2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:transparent;border:0;padding:20px 24px;text-align:left;cursor:pointer;
  font-size:17px;font-weight:700;color:var(--text);line-height:1.5;
}
.faq-q:hover{color:var(--primary)}
.faq-q .icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:9px;background:var(--primary-soft);color:var(--primary);
  display:grid;place-items:center;font-size:16px;transition:transform .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease);
}
.faq-item.is-open .faq-q .icon{transform:rotate(45deg);background:var(--accent);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-a .inner{padding:0 24px 22px;color:var(--text-2);font-size:15px;border-top:1px dashed var(--line);margin-top:-1px;padding-top:18px}
.faq-item.is-open .faq-a{max-height:420px}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:52px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--shadow-2);position:relative;overflow:hidden;
}
.cta-band::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--accent)}
.cta-band h2{font-size:clamp(22px,2.2vw,30px)}
.cta-band p{color:var(--text-2);margin:10px 0 0;max-width:46em}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(246,243,238,.72);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,2.4fr) minmax(0,2.6fr) minmax(0,3fr);gap:38px}
.site-footer .brand-text{color:#fff}
.site-footer .brand-text small{color:rgba(246,243,238,.5)}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:10px}
.site-footer a{color:rgba(246,243,238,.72);font-size:14.5px}
.site-footer a:hover{color:var(--mark)}
.footer-desc{font-size:14.5px;margin-top:16px;max-width:32em;color:rgba(246,243,238,.68)}
.footer-form{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap}
.footer-form input{
  flex:1 1 180px;height:46px;padding:0 14px;border-radius:9px;border:1px solid rgba(246,243,238,.2);
  background:rgba(246,243,238,.06);color:#fff;font-size:14px;font-family:inherit;
}
.footer-form input::placeholder{color:rgba(246,243,238,.45)}
.footer-form input:focus{outline:none;border-color:var(--mark);box-shadow:0 0 0 3px rgba(205,245,100,.18)}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(246,243,238,.12);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-family:var(--font-mono);font-size:12.5px;color:rgba(246,243,238,.55);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 24px}
  .hero-grid{gap:40px}
}
@media (max-width:991px){
  .section{padding:72px 0}
  .hero{padding:64px 0 76px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero h1{max-width:none}
  .spec-wrap{grid-template-columns:1fr;gap:32px}
  .review-wrap{grid-template-columns:1fr;gap:28px}
  .score-card{position:static}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .feature-card.is-main{flex:0 0 460px}
}
@media (max-width:768px){
  body{font-size:15.5px}
  .nav-toggle{display:inline-flex}
  .channel-inner{display:none;flex-direction:column;align-items:flex-start;gap:2px;padding-top:8px;padding-bottom:14px;min-height:0}
  .channel-inner.is-open{display:flex}
  .channel-link{margin-right:0;padding:12px 4px;width:100%;min-height:44px;display:flex;align-items:center}
  .channel-link::before{display:none}
  .channel-link.is-active::before{display:block;left:0;top:50%}
  .channel-link.is-active{padding-left:18px}
  .hero-actions .btn{width:100%}
  .hero-tagcard{position:static;margin-top:18px;right:auto;bottom:auto}
  .entry-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .review-card:nth-child(2),.review-card:nth-child(4){margin-top:0}
  .download-panel{padding:34px 22px}
  .dl-item{min-width:100%}
  .cta-band{padding:36px 24px}
  .cta-actions .btn{width:100%}
  .news-grid{grid-template-columns:1fr}
  .platform-item{padding:14px 16px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .brand-actions .status-chip{display:none}
  .brand-text{font-size:16px}
  .feature-card,.feature-card.is-main{flex:0 0 84vw}
  .spec-cols{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-facts span{font-size:12px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --primary:#123B33;
  --primary-soft:rgba(18,59,51,.08);
  --primary-line:rgba(18,59,51,.25);
  --accent:#E2673A;
  --accent-dark:#C9552C;
  --mark:#CDF564;
  --bg:#F6F3EE;
  --bg-alt:#EFEAE2;
  --dark:#0E1513;
  --card:#FFFFFF;
  --text:#171A18;
  --text-2:#5B625E;
  --text-3:#8A8F8B;
  --line:#E3DED6;
  --line-strong:#C9C2B7;
  --radius-lg:18px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(16,24,20,.05);
  --shadow-2:0 10px 30px -14px rgba(16,24,20,.20);
  --shadow-3:0 24px 60px -24px rgba(16,24,20,.28);
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;background:transparent;transition:color 220ms var(--ease)}
a:hover,a:focus{color:var(--accent)}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.22;color:var(--text)}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--primary-line);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- header ---------- */
.site-header{position:relative;z-index:50}
.brand-row{background:#fff;border-bottom:1px solid var(--line)}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:74px}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--primary);color:var(--mark);
  display:grid;place-items:center;font-weight:900;font-size:20px;line-height:1;flex:none;
}
.brand-text{display:flex;flex-direction:column;font-weight:800;font-size:17px;letter-spacing:-.02em}
.brand-text small{font-family:var(--mono);font-size:10px;letter-spacing:.14em;color:var(--text-3);font-weight:500;margin-top:2px}
.brand-actions{display:flex;align-items:center;gap:10px}
.status-chip{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;color:var(--text-2);
  background:var(--bg-alt);border:1px solid var(--line);border-radius:999px;padding:7px 14px;white-space:nowrap;
}
.status-chip .dot{width:7px;height:7px;border-radius:50%;background:var(--mark);box-shadow:0 0 0 3px rgba(205,245,100,.35)}
.nav-toggle{
  display:none;align-items:center;gap:8px;background:transparent;border:1.5px solid var(--line-strong);
  color:var(--primary);border-radius:var(--radius-sm);padding:10px 14px;font-size:14px;font-weight:600;cursor:pointer;
}
.channel-row{
  position:sticky;top:0;z-index:45;
  background:rgba(246,243,238,.94);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.channel-inner{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;padding:9px 24px}
.channel-inner::-webkit-scrollbar{display:none}
.channel-link{
  position:relative;display:inline-flex;align-items:center;padding:10px 16px;border-radius:999px;
  font-size:15px;color:var(--text-2);white-space:nowrap;transition:all 220ms var(--ease);
}
.channel-link:hover{color:var(--primary);background:var(--bg-alt)}
.channel-link.is-active{color:var(--primary);font-weight:700;background:#fff;box-shadow:var(--shadow-1)}
.channel-link.is-active::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--mark);margin-right:8px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--radius-sm);font-size:16px;font-weight:600;line-height:1;
  border:1.5px solid transparent;cursor:pointer;transition:all 220ms var(--ease);
}
.btn i{font-size:15px}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover,.btn-accent:focus{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px -14px rgba(226,103,58,.75)}
.btn-accent:active{transform:translateY(0);box-shadow:none}
.btn-outline{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn-outline:hover,.btn-outline:focus{background:var(--primary-soft);color:var(--primary);transform:translateY(-1px)}
.btn-ghost-light{background:transparent;border-color:rgba(246,243,238,.45);color:#F6F3EE}
.btn-ghost-light:hover{background:rgba(246,243,238,.12);color:#fff;border-color:rgba(246,243,238,.8)}
.btn-sm{padding:11px 18px;font-size:14px}

/* ---------- badges / links ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;border-radius:999px;font-size:12px;
  letter-spacing:.06em;padding:6px 12px;font-weight:600;
}
.badge-light{background:var(--bg-alt);color:var(--primary);border:1px solid var(--line)}
.badge-mark{background:var(--mark);color:#1B2A16}
.badge-accent{background:var(--accent);color:#fff}
.link-more{
  display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--primary);
  padding-bottom:4px;border-bottom:2px solid var(--mark);transition:all 220ms var(--ease);
}
.link-more:hover{color:var(--accent);border-bottom-color:var(--accent);gap:12px}

/* ---------- breadcrumb ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span.sep{color:var(--line-strong)}
.breadcrumb strong{color:var(--primary);font-weight:700}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero .hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.page-hero .hero-veil{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(96deg,rgba(246,243,238,.95) 0%,rgba(246,243,238,.86) 46%,rgba(246,243,238,.62) 100%);
}
.hero-content{position:relative;z-index:2;padding:72px 24px 76px;max-width:880px}
.hero-content h1{font-size:52px;line-height:1.16;margin:18px 0 18px}
.hero-content h1 em{font-style:normal;color:var(--accent)}
.hero-sub{font-size:18px;color:var(--text-2);max-width:660px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 22px;font-family:var(--mono);font-size:12.5px;color:var(--text-3);
}
.hero-meta b{color:var(--primary);font-weight:600}
.anchor-jump{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.anchor-jump a{
  font-size:13.5px;color:var(--primary);background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:8px 14px;transition:all 220ms var(--ease);
}
.anchor-jump a:hover{border-color:var(--primary-line);transform:translateY(-2px);box-shadow:var(--shadow-2);color:var(--primary)}

/* ---------- layout ---------- */
.section-block{padding:80px 0}
.layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:56px;align-items:start}
.toc-nav{position:sticky;top:92px}
.toc-nav h2{
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--text-3);
  font-weight:700;margin-bottom:14px;font-family:var(--mono);
}
.toc-nav ul{border-left:1px solid var(--line)}
.toc-nav a{
  display:block;padding:11px 0 11px 16px;margin-left:-1px;border-left:2px solid transparent;
  font-size:15px;color:var(--text-2);transition:all 200ms var(--ease);
}
.toc-nav a:hover{color:var(--primary);border-left-color:var(--line-strong)}
.toc-nav a.is-current{color:var(--primary);font-weight:700;border-left-color:var(--accent)}
.toc-help{
  margin-top:26px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;box-shadow:var(--shadow-1);
}
.toc-help p{font-size:13.5px;color:var(--text-2);margin:0 0 10px}

/* ---------- article sections ---------- */
.sec{padding-bottom:52px;margin-bottom:52px;border-bottom:1px dashed var(--line)}
.sec:last-of-type{border-bottom:0;margin-bottom:0;padding-bottom:24px}
.sec-title{
  font-size:28px;margin-bottom:16px;padding-left:16px;border-left:4px solid var(--accent);
  scroll-margin-top:100px;
}
.sec p{font-size:16.5px;color:var(--text-2);line-height:1.85}
.sec p strong{color:var(--text);font-weight:700}
.point-list{margin:6px 0 20px}
.point-list li{position:relative;padding-left:20px;margin-bottom:10px;color:var(--text-2);font-size:16px}
.point-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:2px;background:var(--primary);
}
.point-list li b{color:var(--text)}
.note{
  border-left:3px solid var(--accent);background:var(--bg-alt);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  padding:16px 20px;margin:0 0 22px;font-size:15.5px;color:var(--text-2);
}
.note b{color:var(--primary)}
.figure{margin:0 0 22px}
.figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;border:1px solid var(--line)}
.figure figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}

/* ---------- spec list ---------- */
.spec-list{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;margin-bottom:22px}
.spec-head,.spec-row{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:12px;padding:14px 20px;align-items:center}
.spec-head{background:var(--bg-alt);font-size:12px;letter-spacing:.1em;color:var(--text-3);font-family:var(--mono);text-transform:uppercase}
.spec-row{border-top:1px dashed var(--line);position:relative}
.spec-row::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;background:var(--primary);border-radius:0 3px 3px 0}
.spec-name{font-weight:700;color:var(--text);font-size:15.5px;display:flex;align-items:center;gap:9px}
.spec-name i{color:var(--accent);font-size:14px}
.spec-val{font-family:var(--mono);font-size:13.5px;color:var(--text-2)}
.spec-val.rec{color:var(--primary);font-weight:600}

/* ---------- steps ---------- */
.steps{counter-reset:step;margin-bottom:20px}
.steps li{position:relative;padding-left:52px;margin-bottom:22px}
.steps li::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:0;width:36px;height:36px;border-radius:10px;
  background:var(--primary);color:var(--mark);font-family:var(--mono);font-size:14px;font-weight:700;
  display:grid;place-items:center;
}
.steps li h3{font-size:18px;margin-bottom:6px}
.steps li p{font-size:15.5px;margin:0;color:var(--text-2)}

/* ---------- faq ---------- */
.faq-wrap{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.faq-grid{display:grid;grid-template-columns:340px minmax(0,1fr);gap:56px;align-items:start}
.faq-head h2{font-size:32px;margin-bottom:14px}
.faq-head p{color:var(--text-2);max-width:300px}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-1);overflow:hidden;transition:all 220ms var(--ease);
}
.faq-item[open]{border-color:var(--primary-line);box-shadow:var(--shadow-2)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;font-size:17px;font-weight:700;color:var(--text);
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:none;width:26px;height:26px;border-radius:50%;background:var(--bg-alt);color:var(--primary);
  display:grid;place-items:center;font-size:17px;font-weight:700;transition:transform 220ms var(--ease),background 220ms var(--ease);
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg);background:var(--mark);color:#1B2A16}
.faq-body{padding:0 24px 20px;color:var(--text-2);font-size:15.5px;animation:fadeIn 320ms var(--ease)}
.faq-body p{margin:0}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* ---------- cta band ---------- */
.cta-band{background:var(--dark);color:#F6F3EE;border-radius:var(--radius-lg);padding:52px 48px;text-align:center;box-shadow:var(--shadow-3)}
.cta-band h2{color:#F6F3EE;font-size:32px;margin-bottom:12px}
.cta-band p{color:rgba(246,243,238,.72);max-width:620px;margin:0 auto 26px}
.cta-band .btn-accent{box-shadow:0 14px 30px -16px rgba(226,103,58,.9)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.cta-foot{margin-top:20px;font-family:var(--mono);font-size:12.5px;color:rgba(246,243,238,.5)}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:rgba(246,243,238,.78);margin-top:80px;padding:64px 0 0}
.site-footer .brand{color:#F6F3EE}
.site-footer .brand:hover{color:#F6F3EE}
.site-footer .brand-text small{color:rgba(246,243,238,.45)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:44px}
.footer-grid h4{color:#F6F3EE;font-size:14px;letter-spacing:.06em;margin-bottom:16px}
.footer-grid ul li{margin-bottom:10px}
.footer-grid ul a{color:rgba(246,243,238,.72);font-size:14.5px}
.footer-grid ul a:hover{color:var(--mark)}
.footer-desc{color:rgba(246,243,238,.62);font-size:14px;margin-top:16px;max-width:330px;line-height:1.8}
.footer-form{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}
.footer-form input{
  flex:1 1 140px;min-width:0;height:44px;border-radius:var(--radius-sm);border:1px solid rgba(246,243,238,.22);
  background:rgba(246,243,238,.06);color:#F6F3EE;padding:0 14px;font-size:14px;font-family:inherit;
}
.footer-form input::placeholder{color:rgba(246,243,238,.4)}
.footer-form input:focus{outline:none;border-color:var(--mark);box-shadow:0 0 0 3px rgba(205,245,100,.18)}
.footer-bottom{
  border-top:1px solid rgba(246,243,238,.12);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-family:var(--mono);font-size:12.5px;color:rgba(246,243,238,.5);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 480ms var(--ease),transform 480ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .hero-content h1{font-size:44px}
}
@media (max-width:1024px){
  .layout{grid-template-columns:1fr;gap:36px}
  .toc-nav{position:static;top:auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-1)}
  .toc-nav ul{border-left:0;display:flex;flex-wrap:wrap;gap:8px}
  .toc-nav a{border-left:0;padding:8px 14px;border:1px solid var(--line);border-radius:999px;margin-left:0;font-size:14px}
  .toc-nav a.is-current{border-color:var(--primary);background:var(--primary-soft)}
  .toc-help{display:none}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .hero-content{padding:56px 24px 60px}
  .hero-content h1{font-size:38px}
  .section-block{padding:64px 0}
}
@media (max-width:768px){
  .status-chip{display:none}
  .nav-toggle{display:inline-flex}
  .channel-row{position:sticky}
  .section-block{padding:52px 0}
  .hero-content h1{font-size:32px}
  .hero-sub{font-size:16.5px}
  .sec-title{font-size:24px}
  .spec-head{display:none}
  .spec-row{grid-template-columns:1fr;gap:6px;padding:16px 18px}
  .spec-val::before{content:attr(data-label) "：";color:var(--text-3);font-family:var(--font)}
  .cta-band{padding:38px 24px;border-radius:var(--radius)}
  .cta-band h2{font-size:26px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .faq-head h2{font-size:26px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .brand-text{font-size:15px}
  .brand-text small{display:none}
  .btn{padding:13px 20px;font-size:15px;width:100%}
  .hero-actions .btn{width:100%}
  .brand-actions .btn{width:auto}
  .hero-content{padding:44px 16px 48px}
  .hero-content h1{font-size:29px}
  .steps li{padding-left:46px}
  .footer-bottom{font-size:11.5px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --primary:#123B33;
  --primary-soft:rgba(18,59,51,.08);
  --primary-line:rgba(18,59,51,.25);
  --accent:#E2673A;
  --accent-dark:#C9552B;
  --mark:#CDF564;
  --bg:#F6F3EE;
  --card:#FFFFFF;
  --dark:#0E1513;
  --sub:#EFEAE2;
  --text:#171A18;
  --text-2:#5B625E;
  --text-3:#8A8F8B;
  --line:#E3DED6;
  --line-strong:#C9C2B7;
  --ok:#2F7D5C;
  --warn:#B4552F;
  --info:#3B6B7A;
  --r-lg:18px;
  --r:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(16,24,20,.05);
  --sh-2:0 10px 30px -14px rgba(16,24,20,.20);
  --sh-3:0 24px 60px -24px rgba(16,24,20,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6,p,figure,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
img{max-width:100%;display:block;height:auto}
a{color:var(--primary);text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease),background-color .22s var(--ease)}
a:hover{color:var(--accent)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--primary-line);outline-offset:2px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ============ 容器与通用排版 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-alt{background:var(--sub);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--text-3);margin-bottom:12px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--accent);display:inline-block}
.section-title{font-size:36px;line-height:1.2;letter-spacing:-.02em;font-weight:800}
.section-sub{color:var(--text-2);margin-top:12px;max-width:640px;font-size:15.5px}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),background-color .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn-sm{padding:10px 16px;font-size:13.5px;border-radius:9px}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 1px 2px rgba(226,103,58,.3)}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px -14px rgba(226,103,58,.75)}
.btn-accent:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-outline{border-color:var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:var(--primary-soft);color:var(--primary);border-color:var(--primary)}
.btn-dark{background:var(--dark);color:var(--bg);border-color:rgba(246,243,238,.22)}
.btn-dark:hover{background:#16211D;color:#fff}
.btn:focus-visible{outline:2px solid rgba(18,59,51,.45);outline-offset:2px}
.link-arrow{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  font-weight:600;font-size:14.5px;color:var(--primary);padding-bottom:2px;
}
.link-arrow::after{
  content:"";position:absolute;left:0;bottom:-1px;height:2px;width:0;
  background:var(--accent);transition:width .24s var(--ease);
}
.link-arrow:hover{color:var(--primary)}
.link-arrow:hover::after{width:100%}
.link-arrow i{font-size:12px;transition:transform .24s var(--ease)}
.link-arrow:hover i{transform:translateX(3px)}

/* ============ 徽标与标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  padding:6px 12px;border-radius:999px;line-height:1;
}
.badge-soft{background:rgba(18,59,51,.07);color:var(--primary)}
.badge-mark{background:var(--mark);color:#1B2A0F}
.badge-accent{background:var(--accent);color:#fff}
.tag-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:34px}
.tag-label{font-size:13px;color:var(--text-3);font-family:var(--mono);letter-spacing:.08em}
.tag{
  display:inline-flex;align-items:center;
  padding:7px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  font-size:13px;color:var(--text-2);
  transition:border-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.tag:hover{border-color:var(--primary-line);color:var(--primary);transform:translateY(-1px)}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,243,238,.94);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.brand-row{border-bottom:1px solid var(--line)}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:70px}
.brand{display:flex;align-items:center;gap:12px;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  background:var(--primary);color:var(--mark);
  display:grid;place-items:center;
  font-family:var(--mono);font-weight:700;font-size:19px;
  box-shadow:0 6px 16px -10px rgba(18,59,51,.7);
}
.brand-text{display:flex;flex-direction:column;font-weight:800;font-size:17px;line-height:1.25;letter-spacing:-.01em}
.brand-text small{font-family:var(--mono);font-size:9.5px;font-weight:500;letter-spacing:.18em;color:var(--text-3);margin-top:2px}
.brand-actions{display:flex;align-items:center;gap:10px}
.status-chip{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;color:var(--text-2);
  background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:7px 14px;
}
.status-chip .dot{
  width:7px;height:7px;border-radius:50%;background:var(--mark);
  box-shadow:0 0 0 3px rgba(205,245,100,.35);
}
.nav-toggle{
  display:none;align-items:center;gap:7px;
  padding:10px 14px;border-radius:9px;
  border:1.5px solid var(--primary);color:var(--primary);
  font-size:13.5px;font-weight:600;
}
.nav-toggle:hover{background:var(--primary-soft)}
.channel-row{background:rgba(255,255,255,.5)}
.channel-inner{
  display:flex;align-items:center;gap:6px;height:54px;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
}
.channel-inner::-webkit-scrollbar{display:none}
.channel-link{
  position:relative;flex:0 0 auto;
  padding:9px 16px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--text-2);white-space:nowrap;
  transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease);
}
.channel-link:hover{color:var(--primary);background:var(--sub)}
.channel-link.is-active{
  color:var(--primary);font-weight:700;
  background:#fff;border:1px solid var(--primary-line);
}
.channel-link.is-active::before{
  content:"";display:inline-block;width:5px;height:5px;border-radius:50%;
  background:var(--mark);margin-right:8px;vertical-align:2px;
}

/* ============ 文章头部 ============ */
.article-hero{position:relative;padding:52px 0 44px;border-bottom:1px solid var(--line);overflow:hidden}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.09;pointer-events:none;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(246,243,238,.4) 0%,rgba(246,243,238,.9) 78%,var(--bg) 100%);
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-bottom:22px;flex-wrap:nowrap;overflow:hidden}
.breadcrumb .sep{color:var(--line-strong)}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .current{color:var(--primary);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:46vw}
.article-head{max-width:880px}
.article-title{
  font-size:40px;line-height:1.24;letter-spacing:-.02em;font-weight:800;
  margin:16px 0 20px;color:var(--text);
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 26px;
  padding:14px 0;border-top:1px dashed var(--line-strong);border-bottom:1px dashed var(--line-strong);
  font-size:13px;color:var(--text-2);
}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:7px}
.meta-row .meta-item i{color:var(--text-3);font-size:12px}
.meta-row .mono{color:var(--text-2)}

/* ============ 文章布局 ============ */
.article-layout{padding-top:52px;padding-bottom:88px}
.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:56px;align-items:start}
.article-main{min-width:0}
.article-body{max-width:760px;font-size:17px;line-height:1.9;color:#222724}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.25em}
.article-body h2{
  font-size:22px;line-height:1.45;font-weight:800;letter-spacing:-.01em;
  color:var(--text);margin:46px 0 18px;padding-left:14px;
  border-left:3px solid var(--accent);scroll-margin-top:130px;
}
.article-body h3{font-size:19px;font-weight:700;margin:32px 0 12px;color:var(--text);scroll-margin-top:130px}
.article-body h4{font-size:17px;font-weight:700;margin:24px 0 10px;color:var(--text-2)}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.35em}
.article-body ul{list-style:none;padding-left:0}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:.6em}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;
  width:7px;height:7px;border-radius:2px;background:var(--primary);
}
.article-body ol{list-style:decimal}
.article-body ol li{margin-bottom:.6em}
.article-body ol li::marker{color:var(--primary);font-weight:700}
.article-body strong{font-weight:700;color:var(--text)}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--accent)}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;
  background:var(--sub);border-left:3px solid var(--accent);
  border-radius:0 var(--r) var(--r) 0;color:var(--text-2);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:26px auto;box-shadow:var(--sh-1)}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body hr{border:0;height:1px;background:var(--line);margin:36px 0}
.article-body code{
  font-family:var(--mono);font-size:.9em;
  background:var(--sub);color:var(--primary);
  padding:2px 6px;border-radius:6px;
}
.article-body pre{
  background:var(--dark);color:#E8EDEA;border-radius:var(--r-img);
  padding:20px 22px;overflow-x:auto;margin:24px 0;font-size:14px;line-height:1.7;
}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body table{font-size:15px;margin:24px 0;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line)}
.article-body thead{background:var(--sub)}
.article-body th{
  text-align:left;padding:12px 16px;font-weight:700;color:var(--primary);
  border-bottom:1px solid var(--line);font-size:14px;letter-spacing:.02em;
}
.article-body td{padding:12px 16px;border-bottom:1px dashed var(--line);color:var(--text-2)}
.article-body tr:last-child td{border-bottom:0}

/* ============ 正文提示条 / 内联 CTA ============ */
.inline-cta{
  max-width:760px;margin:44px 0 0;
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  background:var(--sub);border-left:3px solid var(--accent);
  border-radius:0 var(--r) var(--r) 0;padding:20px 24px;
}
.inline-cta-text{display:flex;flex-direction:column;gap:4px}
.inline-cta-text strong{font-size:15.5px;font-weight:700;color:var(--text)}
.inline-cta-text span{font-size:14px;color:var(--text-2)}

/* ============ 分享行 ============ */
.share-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:18px}
.share-btn{
  width:40px;height:40px;border-radius:50%;
  background:#fff;border:1px solid var(--line);color:var(--text-2);
  display:grid;place-items:center;font-size:15px;
  transition:border-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.share-btn:hover{color:var(--primary);border-color:var(--primary-line);transform:translateY(-2px);box-shadow:var(--sh-2)}
.copy-tip{font-size:13px;color:var(--ok);min-height:20px}

/* ============ 侧栏 ============ */
.article-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:140px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px 22px 24px;box-shadow:var(--sh-1)}
.side-title{
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--text-3);font-weight:500;margin-bottom:16px;
}
.toc-list{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line)}
.toc-list a{
  display:block;padding:7px 0 7px 14px;margin-left:-1px;
  font-size:14px;color:var(--text-2);border-left:2px solid transparent;line-height:1.5;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.toc-list a:hover{color:var(--primary);background:var(--primary-soft)}
.toc-list a.is-current{color:var(--primary);font-weight:700;border-left-color:var(--accent)}
.side-links{display:flex;flex-direction:column;gap:2px}
.side-links a{
  display:flex;flex-direction:column;gap:3px;
  padding:12px 0;border-bottom:1px dashed var(--line);
  font-size:14.5px;font-weight:600;color:var(--text);
}
.side-links li:last-child a{border-bottom:0}
.side-links a span{font-size:12.5px;font-weight:400;color:var(--text-3);line-height:1.6}
.side-links a:hover{color:var(--primary)}
.side-card-plain{padding:18px 22px}

/* ============ 空态 ============ */
.empty-state{
  max-width:760px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);padding:56px 40px;text-align:center;box-shadow:var(--sh-1);
}
.empty-state .empty-icon{
  width:64px;height:64px;margin:0 auto 20px;border-radius:18px;
  background:var(--sub);color:var(--text-3);
  display:grid;place-items:center;font-size:26px;
}
.empty-title{font-size:22px;font-weight:800;color:var(--text);margin-bottom:10px}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:22px}

/* ============ 频道双卡 ============ */
.channel-pair{background:var(--sub);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.pair-card{
  display:flex;flex-direction:column;gap:12px;height:100%;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.pair-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--primary-line)}
.pair-card h3{font-size:20px;font-weight:800;color:var(--text);letter-spacing:-.01em}
.pair-card p{font-size:14.5px;color:var(--text-2)}
.pair-meta{display:flex;align-items:center;gap:14px;margin-top:4px;font-family:var(--mono);font-size:12.5px;color:var(--text-3)}

/* ============ 内容卡片 ============ */
.card{
  display:flex;flex-direction:column;height:100%;
  background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--primary-line)}
.card-media{position:relative;aspect-ratio:16/9;background:var(--sub);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.card-time{font-family:var(--mono);font-size:12.5px;color:var(--text-3)}
.card-body h3{font-size:18px;line-height:1.5;font-weight:700;color:var(--text)}
.card-body p{font-size:14.5px;color:var(--text-2);line-height:1.75}
.card-body .link-arrow{margin-top:auto;padding-top:8px}

/* ============ 结尾 CTA ============ */
.cta-section{padding:88px 0 96px}
.cta-panel{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:var(--primary);color:var(--bg);
  padding:60px 48px;text-align:center;
  box-shadow:var(--sh-3);
}
.cta-panel::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
  opacity:.16;pointer-events:none;
}
.cta-inner{position:relative;z-index:1;max-width:680px;margin:0 auto}
.cta-panel h2{font-size:32px;line-height:1.3;letter-spacing:-.02em;font-weight:800;color:#F6F3EE}
.cta-panel p{margin:14px 0 28px;color:rgba(246,243,238,.76);font-size:15.5px}
.cta-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}
.cta-note{
  margin-top:22px;font-family:var(--mono);font-size:12.5px;color:rgba(246,243,238,.55);
  display:flex;justify-content:center;gap:18px;flex-wrap:wrap;
}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:var(--bg);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px}
.site-footer h4{
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:rgba(246,243,238,.5);font-weight:500;margin-bottom:18px;
}
.site-footer .brand{color:var(--bg)}
.site-footer .brand:hover{color:var(--bg)}
.site-footer .brand-mark{background:rgba(246,243,238,.08);color:var(--mark)}
.site-footer .brand-text small{color:rgba(246,243,238,.42)}
.footer-desc{font-size:14px;color:rgba(246,243,238,.62);line-height:1.85;margin-top:18px;max-width:330px}
.site-footer ul{display:flex;flex-direction:column;gap:11px}
.site-footer ul a{font-size:14px;color:rgba(246,243,238,.72)}
.site-footer ul a:hover{color:var(--mark)}
.footer-form{display:flex;gap:8px;margin-top:14px}
.footer-form input{
  flex:1;min-width:0;height:44px;padding:0 14px;
  background:rgba(246,243,238,.06);
  border:1px solid rgba(246,243,238,.16);border-radius:9px;
  color:var(--bg);font-size:14px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease);
}
.footer-form input::placeholder{color:rgba(246,243,238,.4)}
.footer-form input:focus{outline:none;border-color:var(--mark);background:rgba(246,243,238,.1);box-shadow:0 0 0 2px rgba(205,245,100,.18)}
.footer-bottom{
  margin-top:56px;padding:22px 0;
  border-top:1px solid rgba(246,243,238,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-family:var(--mono);font-size:12.5px;color:rgba(246,243,238,.45);
}

/* ============ 动效 ============ */
.fade-in{animation:fadeUp .48s var(--ease) both}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .article-wrap{grid-template-columns:minmax(0,1fr) 280px;gap:40px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-grid > div:last-child{grid-column:1 / -1}
  .footer-desc{max-width:100%}
}
@media (max-width:992px){
  .section{padding:72px 0}
  .article-layout{padding-bottom:64px}
  .article-wrap{grid-template-columns:1fr;gap:36px}
  .article-side{position:static;order:2}
  .article-title{font-size:32px}
  .section-title{font-size:28px}
  .cta-panel{padding:48px 32px}
  .cta-panel h2{font-size:26px}
  .cta-section{padding:64px 0 72px}
  .article-hero{padding:40px 0 32px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .status-chip{display:none}
  .nav-toggle{display:inline-flex}
  .channel-row{display:none}
  .channel-row.is-open{display:block;border-top:1px solid var(--line)}
  .channel-row.is-open .channel-inner{
    flex-direction:column;align-items:stretch;height:auto;
    padding:10px 0 16px;gap:4px;overflow:visible;
  }
  .channel-row.is-open .channel-link{padding:12px 14px;border-radius:10px}
  .brand-text{font-size:15.5px}
  .brand-text small{font-size:9px}
  .brand-actions .btn-outline{display:none}
  .article-title{font-size:28px}
  .meta-row{gap:8px 18px;font-size:12.5px}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:20px;margin-top:36px}
  .article-body h3{font-size:17.5px}
  .inline-cta{padding:18px 18px;flex-direction:column;align-items:flex-start}
  .empty-state{padding:40px 22px}
  .pair-card{padding:22px}
  .cta-panel{padding:40px 22px}
  .cta-panel h2{font-size:23px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .site-footer{padding-top:56px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:520px){
  .section{padding:56px 0}
  .article-title{font-size:25px}
  .section-title{font-size:24px}
  .breadcrumb .current{max-width:56vw}
  .cta-actions .btn{width:100%}
  .brand-mark{width:34px;height:34px;flex-basis:34px;font-size:17px}
  .article-hero::before{opacity:.06}
}

/* roulang page: category2 */
:root{
  --primary:#123B33;
  --primary-08:rgba(18,59,51,.08);
  --primary-12:rgba(18,59,51,.12);
  --primary-25:rgba(18,59,51,.25);
  --accent:#E2673A;
  --accent-dark:#C9562C;
  --accent-20:rgba(226,103,58,.20);
  --mark:#CDF564;
  --bg:#F6F3EE;
  --card:#FFFFFF;
  --dark:#0E1513;
  --soft:#EFEAE2;
  --t1:#171A18;
  --t2:#5B625E;
  --t3:#8A8F8B;
  --inv:#F6F3EE;
  --line:#E3DED6;
  --line-strong:#C9C2B7;
  --ok:#2F7D5C;
  --warn:#B4552F;
  --info:#3B6B7A;
  --r-lg:18px;
  --r-md:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh1:0 1px 2px rgba(16,24,20,.05);
  --sh2:0 10px 30px -14px rgba(16,24,20,.20);
  --sh3:0 24px 60px -24px rgba(16,24,20,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

/* ===== reset / base ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:var(--font);
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--accent)}
h1,h2,h3,h4,h5{margin:0;font-family:var(--font);font-weight:800;letter-spacing:-.02em;line-height:1.22;color:var(--t1)}
p{margin:0 0 1em;font-size:16px;line-height:1.8;color:var(--t2)}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer}
input{font:inherit}
::selection{background:var(--mark);color:var(--dark)}
:focus-visible{outline:2px solid var(--primary-25);outline-offset:2px;border-radius:6px}
.sr-only{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ===== foundation overrides ===== */
body,html{background-color:var(--bg)}
a{color:var(--primary)}
a:hover,a:focus{color:var(--accent)}
h1,h2,h3,h4{color:inherit}
p{font-size:16px}
ul.accordion{margin:0;background:transparent}
.grid-x{display:flex;flex-wrap:wrap;gap:28px;margin-left:0;margin-right:0}
.grid-x.grid-margin-x{margin-left:0;margin-right:0}
.grid-x > .cell{flex:1 1 100%;min-width:0;padding-left:0;padding-right:0;margin-left:0;margin-right:0}
@media screen and (min-width:768px){
  .grid-x > .cell.medium-6{flex:1 1 calc(50% - 14px);width:auto}
}
@media screen and (min-width:1024px){
  .grid-x > .cell.large-4{flex:1 1 calc(33.333% - 19px);width:auto}
  .grid-x > .cell.large-5{flex:1 1 calc(41.666% - 19px);width:auto}
  .grid-x > .cell.large-7{flex:1 1 calc(58.333% - 19px);width:auto}
  .grid-x > .cell.large-8{flex:1 1 calc(66.666% - 19px);width:auto}
}

/* ===== container ===== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1.5px solid transparent;cursor:pointer;
  text-decoration:none;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn i{font-size:15px}
.btn-accent{background:var(--accent);color:#fff;border-color:var(--accent);box-shadow:0 6px 18px -10px var(--accent-20)}
.btn-accent:hover{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px -12px var(--accent-20)}
.btn-accent:active{transform:translateY(0);box-shadow:none}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary);border-width:1.5px}
.btn-outline:hover{background:var(--primary-08);color:var(--primary);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(0)}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:9px}
.btn-ghost{background:transparent;color:var(--t2);border-color:var(--line-strong)}
.btn-ghost:hover{color:var(--primary);border-color:var(--primary);background:var(--primary-08)}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;
  color:var(--primary);position:relative;
}
.text-link::after{
  content:"";position:absolute;left:0;bottom:-4px;height:2px;width:100%;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.text-link:hover::after{transform:scaleX(1)}
.text-link i{font-size:12px;transition:transform .22s var(--ease)}
.text-link:hover i{transform:translateX(3px)}

/* ===== 徽标 / 标签 ===== */
.badge{display:inline-flex;align-items:center;gap:6px;border-radius:var(--r-pill);font-size:12px;font-weight:600;letter-spacing:.06em;padding:5px 12px;line-height:1.4}
.badge-soft{background:var(--primary-08);color:var(--primary)}
.badge-mark{background:var(--mark);color:var(--dark)}
.badge-accent{background:var(--accent);color:#fff}
.badge-line{background:transparent;border:1px solid var(--line-strong);color:var(--t2)}

/* ===== header ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,243,238,.94);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.brand-row{background:transparent}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:74px}
.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;color:var(--t1)}
.brand:hover{color:var(--t1)}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  background:var(--primary);color:var(--mark);
  display:grid;place-items:center;
  font-family:var(--mono);font-size:20px;font-weight:700;line-height:1;
  box-shadow:0 6px 16px -10px rgba(18,59,51,.9);
}
.brand-text{display:flex;flex-direction:column;font-size:18px;font-weight:800;letter-spacing:-.02em;line-height:1.15}
.brand-text small{font-family:var(--mono);font-size:9.5px;font-weight:600;letter-spacing:.16em;color:var(--t3);margin-top:3px}
.brand-actions{display:flex;align-items:center;gap:10px}
.status-chip{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;font-weight:600;color:var(--primary);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
  padding:6px 13px;white-space:nowrap;
}
.status-chip .dot{width:7px;height:7px;border-radius:50%;background:var(--mark);box-shadow:0 0 0 3px rgba(205,245,100,.35)}
.nav-toggle{
  display:none;align-items:center;gap:8px;
  background:#fff;border:1.5px solid var(--line-strong);color:var(--t1);
  border-radius:9px;padding:9px 14px;font-size:14px;font-weight:600;
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}
.channel-row{border-top:1px solid var(--line);background:rgba(255,255,255,.6)}
.channel-inner{display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:none}
.channel-inner::-webkit-scrollbar{display:none}
.channel-link{
  position:relative;display:inline-flex;align-items:center;
  padding:15px 15px;font-size:15px;font-weight:600;color:var(--t2);
  white-space:nowrap;text-decoration:none;
}
.channel-link::after{
  content:"";position:absolute;left:50%;bottom:0;height:2px;width:0;
  background:var(--primary);transform:translateX(-50%);
  transition:width .26s var(--ease);
}
.channel-link:hover{color:var(--t1)}
.channel-link:hover::after{width:60%}
.channel-link.is-active{color:var(--t1);font-weight:800}
.channel-link.is-active::after{width:100%}
.channel-link.is-active::before{
  content:"";position:absolute;left:2px;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--mark);
}

/* ===== 分类页大标题带 ===== */
.cat-hero{
  position:relative;overflow:hidden;
  padding:84px 0 64px;
  background:var(--bg);
  border-bottom:1px solid var(--line);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(18,59,51,.055) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(18,59,51,.055) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(120% 90% at 70% 10%,#000 0%,transparent 72%);
  mask-image:radial-gradient(120% 90% at 70% 10%,#000 0%,transparent 72%);
}
.cat-hero .container{position:relative}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:20px;font-weight:500}
.crumb a{color:var(--t3);text-decoration:none}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:var(--line-strong)}
.crumb .now{color:var(--primary);font-weight:700}
.cat-hero h1{
  font-size:clamp(30px,5vw,56px);
  font-weight:900;line-height:1.14;letter-spacing:-.03em;color:var(--t1);
  max-width:16em;
}
.hero-side{padding-left:8px}
.hero-side .hero-note{font-size:16.5px;line-height:1.85;color:var(--t2);margin-bottom:22px}
.meta-mono{
  font-family:var(--mono);font-size:13px;color:var(--t3);
  display:flex;flex-wrap:wrap;gap:8px 18px;
  padding-top:18px;border-top:1px dashed var(--line-strong);
}
.meta-mono strong{color:var(--t1);font-weight:700}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}

/* ===== 通用板块 ===== */
.section{padding:88px 0}
.section-soft{background:var(--soft)}
.section-white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,3.4vw,36px);font-weight:900;letter-spacing:-.03em}
.section-head .head-desc{max-width:560px;font-size:16px;color:var(--t2);margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12px;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:var(--t3);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}

/* ===== 卡片矩阵（两列不等高） ===== */
.matrix-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;align-items:start}
.matrix-col{display:grid;gap:28px}
.matrix-col.offset{margin-top:44px}
.m-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.m-card:hover{transform:translateY(-2px);box-shadow:var(--sh2);border-color:var(--primary-25)}
.m-card figure{margin:0;aspect-ratio:16/9;overflow:hidden;background:var(--soft)}
.m-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.m-card:hover img{transform:scale(1.03)}
.m-card .m-body{padding:26px 26px 28px}
.m-card h3{font-size:19px;font-weight:800;margin-bottom:12px;letter-spacing:-.01em}
.m-card p{font-size:15.5px;line-height:1.8;margin-bottom:16px;color:var(--t2)}
.points{display:grid;gap:9px;padding-top:14px;border-top:1px dashed var(--line-strong)}
.points li{position:relative;padding-left:18px;font-size:14.5px;color:var(--t2);line-height:1.7}
.points li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:var(--primary)}
.m-tag{margin-bottom:14px}

/* ===== 深色规格区块 ===== */
.spec-dark{background:var(--dark);color:var(--inv);padding:88px 0}
.spec-dark h2{color:var(--inv);font-size:clamp(24px,3.4vw,36px);font-weight:900;letter-spacing:-.03em}
.spec-dark p{color:rgba(246,243,238,.72)}
.spec-dark .eyebrow{color:rgba(246,243,238,.55)}
.dl-list{display:grid;gap:12px;margin-top:8px}
.dl-btn{
  display:flex;align-items:center;gap:14px;
  padding:15px 20px;border-radius:var(--r-btn);
  border:1px solid rgba(246,243,238,.20);
  background:rgba(255,255,255,.045);color:var(--inv);
  text-decoration:none;font-weight:600;font-size:15px;
  transition:background-color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.dl-btn:hover{background:rgba(255,255,255,.10);border-color:rgba(246,243,238,.42);color:#fff;transform:translateY(-1px)}
.dl-btn .size{margin-left:auto;font-family:var(--mono);font-size:12.5px;color:rgba(246,243,238,.62);letter-spacing:.02em}
.dl-btn.is-primary{background:var(--accent);border-color:var(--accent);color:#fff}
.dl-btn.is-primary .size{color:rgba(255,255,255,.82)}
.dl-btn.is-primary:hover{background:var(--accent-dark);border-color:var(--accent-dark)}
.spec-note{margin-top:20px;font-size:13px;color:rgba(246,243,238,.55);line-height:1.7}
.spec-panel{
  border:1px solid rgba(246,243,238,.16);border-radius:var(--r-lg);
  padding:28px;background:rgba(255,255,255,.03);
}
.spec-panel h3{color:var(--inv);font-size:17px;margin-bottom:22px;font-weight:800}
.spec-row{
  border-left:3px solid var(--accent);
  padding:14px 0 14px 18px;
  border-bottom:1px dashed rgba(246,243,238,.14);
  display:flex;flex-wrap:wrap;gap:8px 20px;align-items:baseline;justify-content:space-between;
}
.spec-row:last-child{border-bottom:0;padding-bottom:4px}
.spec-row .pname{font-weight:700;color:var(--inv);font-size:15.5px;min-width:96px}
.spec-val{font-family:var(--mono);font-size:13px;color:rgba(246,243,238,.62);display:inline-flex;gap:8px;align-items:baseline}
.spec-val b{color:var(--mark);font-weight:600}

/* ===== 排查流程 ===== */
.flow-step{
  height:100%;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px 24px 26px;box-shadow:var(--sh1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.flow-step:hover{transform:translateY(-2px);box-shadow:var(--sh2);border-color:var(--primary-25)}
.flow-num{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--line-strong);display:block;margin-bottom:16px;letter-spacing:-.02em}
.flow-step h3{font-size:17px;margin-bottom:10px;font-weight:800}
.flow-step p{font-size:14.5px;line-height:1.8;margin:0;color:var(--t2)}

/* ===== FAQ ===== */
.faq-card{background:var(--soft);border:1px solid var(--line);border-radius:var(--r-md);padding:26px;margin-top:26px}
.faq-card p{font-size:14.5px;margin-bottom:16px}
.faq-acc .accordion-item{
  border:1px solid var(--line);border-radius:var(--r-md) !important;
  background:#fff;margin-bottom:12px;overflow:hidden;box-shadow:var(--sh1);
  transition:border-color .22s var(--ease)
}
.faq-acc .accordion-item:hover{border-color:var(--primary-25)}
.faq-acc .accordion-title{
  border:0;background:transparent;padding:20px 58px 20px 24px;
  font-size:17px;font-weight:700;color:var(--t1);line-height:1.6;
  transition:background-color .22s var(--ease),color .22s var(--ease);
}
.faq-acc .accordion-title:hover{background:var(--primary-08);color:var(--primary)}
.faq-acc .accordion-title::before{
  content:"+";position:absolute;right:24px;top:50%;transform:translateY(-50%);
  font-family:var(--mono);font-size:20px;font-weight:600;color:var(--primary);
  transition:transform .22s var(--ease);left:auto;
}
.faq-acc .accordion-item.is-active .accordion-title::before{content:"−"}
.faq-acc .accordion-content{
  border-top:1px dashed var(--line-strong);padding:18px 24px 22px;background:#fff;
  color:var(--t2);font-size:15.5px;line-height:1.85;
}
.faq-acc .accordion-content p{margin:0;font-size:15.5px;line-height:1.85}

/* ===== 相关频道横滑 ===== */
.slider-track{
  display:flex;gap:20px;overflow-x:auto;padding:6px 4px 18px;
  scroll-snap-type:x mandatory;scrollbar-width:thin;
}
.slider-track::-webkit-scrollbar{height:6px}
.slider-track::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:3px}
.ch-card{
  flex:0 0 306px;scroll-snap-align:start;
  display:flex;flex-direction:column;gap:12px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 24px;box-shadow:var(--sh1);color:var(--t1);text-decoration:none;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.ch-card:hover{transform:translateY(-2px);box-shadow:var(--sh2);border-color:var(--primary-25);color:var(--t1)}
.ch-card h3{font-size:18px;font-weight:800}
.ch-card p{font-size:14.5px;line-height:1.8;margin:0;color:var(--t2)}
.ch-card .ch-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:14px;font-weight:600;color:var(--primary)}
@media (max-width:520px){.ch-card{flex:0 0 82%}}

/* ===== CTA 条 ===== */
.cta-band{
  background:var(--soft);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:52px 44px;text-align:center;box-shadow:var(--sh1);
}
.cta-band h2{font-size:clamp(22px,3vw,32px);font-weight:900;letter-spacing:-.03em;margin-bottom:14px}
.cta-band p{max-width:640px;margin:0 auto 28px;font-size:16px;color:var(--t2)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* ===== footer ===== */
.site-footer{background:var(--dark);color:var(--inv);padding:76px 0 26px;margin-top:0}
.site-footer .brand{color:var(--inv)}
.site-footer .brand:hover{color:#fff}
.site-footer .brand-mark{background:rgba(246,243,238,.10);color:var(--mark);box-shadow:none}
.site-footer .brand-text small{color:rgba(246,243,238,.45)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px}
.footer-grid h4{font-size:15px;font-weight:800;color:#fff;margin-bottom:18px;letter-spacing:.02em}
.footer-grid ul{display:grid;gap:10px}
.footer-grid ul a{font-size:14.5px;color:rgba(246,243,238,.72);text-decoration:none}
.footer-grid ul a:hover{color:var(--mark)}
.footer-desc{font-size:14.5px;line-height:1.85;color:rgba(246,243,238,.66);margin:20px 0 0;max-width:34em}
.footer-form{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}
.footer-form input{
  flex:1 1 160px;min-width:0;height:46px;padding:0 14px;
  border-radius:var(--r-btn);border:1px solid rgba(246,243,238,.22);
  background:rgba(255,255,255,.06);color:var(--inv);font-size:14.5px;
}
.footer-form input::placeholder{color:rgba(246,243,238,.45)}
.footer-form input:focus{outline:none;border-color:var(--mark);box-shadow:0 0 0 3px rgba(205,245,100,.18)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(246,243,238,.14);
  display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;
  font-family:var(--mono);font-size:12.5px;color:rgba(246,243,238,.55);
}

/* ===== 入场动效 ===== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* ===== 响应式 ===== */
@media screen and (max-width:1023px){
  .container{padding:0 20px}
  .section,.spec-dark{padding:72px 0}
  .cat-hero{padding:64px 0 52px}
  .hero-side{padding-left:0}
  .matrix-grid{grid-template-columns:1fr;gap:24px}
  .matrix-col.offset{margin-top:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .status-chip{display:none}
}
@media screen and (max-width:767px){
  .container{padding:0 16px}
  body{font-size:16px}
  .section,.spec-dark{padding:56px 0}
  .cat-hero{padding:48px 0 40px}
  .brand-inner{min-height:64px}
  .brand-text{font-size:16px}
  .brand-text small{display:none}
  .nav-toggle{display:inline-flex}
  .channel-row{display:none}
  .channel-row.is-open{display:block}
  .channel-inner{flex-direction:column;align-items:stretch;gap:0;padding:8px 0 12px}
  .channel-link{padding:13px 6px;font-size:15.5px;border-bottom:1px solid var(--line)}
  .channel-link:last-child{border-bottom:0}
  .channel-link::after{display:none}
  .channel-link.is-active::before{position:static;transform:none;margin-right:9px}
  .brand-actions .btn-outline{display:none}
  .hero-actions{margin-top:28px}
  .hero-actions .btn{flex:1 1 100%}
  .section-head{margin-bottom:30px}
  .cta-band{padding:36px 22px}
  .cta-actions .btn{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .spec-panel{padding:22px 18px}
  .spec-row .pname{min-width:auto}
  .footer-bottom{font-size:11.5px}
}
@media screen and (max-width:520px){
  .cat-hero h1{font-size:30px}
  .m-card .m-body{padding:22px 20px 24px}
  .faq-acc .accordion-title{padding:17px 50px 17px 18px;font-size:16px}
  .faq-acc .accordion-content{padding:16px 18px 20px}
}