/* roulang page: index */
:root{
  --bg-0:#0C0F14;
  --bg-1:#121722;
  --surface:#161C28;
  --surface-2:#1D2533;
  --line:#242D3E;
  --primary:#21E6A6;
  --primary-ink:#04231A;
  --primary-soft:rgba(33,230,166,.12);
  --primary-soft-2:rgba(33,230,166,.06);
  --accent:#FF5C8A;
  --amber:#FFB020;
  --danger:#FF5A5A;
  --success:#3ED598;
  --text-1:#EAF0F7;
  --text-2:#9AA7B8;
  --text-3:#6B7788;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-1:0 18px 40px -24px rgba(0,0,0,.9);
  --shadow-hover:0 0 0 1px rgba(33,230,166,.4), 0 24px 60px -28px rgba(33,230,166,.35);
  --ease:160ms cubic-bezier(.4,0,.2,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate","Bahnschrift","Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus{outline:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:var(--primary);color:var(--primary-ink)}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:0}

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

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:52px;padding:0 28px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;line-height:1;cursor:pointer;
  transition:transform var(--ease),background-color var(--ease),border-color var(--ease),box-shadow var(--ease),color var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:var(--primary-ink);border:1px solid var(--primary)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 34px -14px rgba(33,230,166,.7)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{background:transparent;color:var(--text-1);border:1px solid var(--line)}
.btn-ghost:hover{border-color:rgba(33,230,166,.4);color:var(--primary)}
.btn-ghost:active{transform:translateY(0);background:var(--primary-soft-2)}
.btn-sm{min-height:44px;padding:0 18px;font-size:14px}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;min-height:44px;
  color:var(--primary);font-size:14px;font-weight:600;
}
.link-arrow svg{transition:transform var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:13px;line-height:1.6;color:var(--text-2);
  border:1px solid var(--line);background:var(--surface);
}
.badge-primary{color:var(--primary);border-color:rgba(33,230,166,.35);background:var(--primary-soft)}
.badge-amber{color:var(--amber);border-color:rgba(255,176,32,.32);background:rgba(255,176,32,.1)}
.badge-accent{color:var(--accent);border-color:rgba(255,92,138,.3);background:rgba(255,92,138,.1)}

.section{padding:96px 0}
.section-alt{background:var(--bg-1);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:32px}
.section-head h2{font-size:32px;line-height:1.25;font-weight:700;letter-spacing:.01em}
.section-head p{margin-top:8px;color:var(--text-2);font-size:15px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--primary);letter-spacing:.14em;text-transform:uppercase;margin-bottom:10px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--primary);border-radius:2px}

/* ---------- 头部 ---------- */
.site-header{position:relative;z-index:60;background:var(--bg-0)}
.brandbar{border-bottom:1px solid var(--line)}
.brandbar-inner{display:flex;align-items:center;gap:24px;height:72px}
.logo{display:flex;align-items:center;gap:10px;flex:none;min-height:44px}
.logo-mark{
  width:36px;height:36px;border-radius:10px;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--primary) 0%,#0f9e73 100%);
  color:var(--primary-ink);font-weight:800;font-size:15px;font-family:var(--font-num);
}
.logo-text{font-size:18px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.logo-text em{font-style:normal;color:var(--primary)}

.search{
  flex:1;max-width:320px;position:relative;display:flex;align-items:center;
}
.search input{
  width:100%;height:44px;padding:0 76px 0 40px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-btn);
  font-size:14px;color:var(--text-1);transition:border-color var(--ease),box-shadow var(--ease);
}
.search input::placeholder{color:var(--text-3)}
.search input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(33,230,166,.12)}
.search .search-icon{position:absolute;left:12px;color:var(--text-3);display:flex}
.search button{
  position:absolute;right:4px;height:36px;padding:0 14px;border-radius:8px;
  background:var(--primary-soft);color:var(--primary);font-size:13px;font-weight:600;
  transition:background-color var(--ease)}
.search button:hover{background:rgba(33,230,166,.2)}

.brandbar-actions{display:flex;align-items:center;gap:16px;margin-left:auto}
.text-link{font-size:14px;color:var(--text-2);min-height:44px;display:inline-flex;align-items:center;transition:color var(--ease)}
.text-link:hover{color:var(--primary)}
.menu-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  align-items:center;justify-content:center;color:var(--text-1)
}
.menu-toggle:hover{border-color:rgba(33,230,166,.4);color:var(--primary)}

.channelbar{
  position:sticky;top:0;z-index:55;
  background:rgba(12,15,20,.94);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.channelbar-inner{display:flex;align-items:center;gap:8px;height:52px;overflow-x:auto;scrollbar-width:none}
.channelbar-inner::-webkit-scrollbar{display:none}
.channel{
  position:relative;display:inline-flex;align-items:center;
  padding:12px 20px;border-radius:8px;font-size:15px;color:var(--text-2);
  white-space:nowrap;transition:background-color var(--ease),color var(--ease);
}
.channel:hover{background:rgba(33,230,166,.06);color:var(--text-1)}
.channel.active{background:rgba(33,230,166,.08);color:var(--primary);font-weight:600}
.channel.active::after{
  content:"";position:absolute;left:20px;right:20px;bottom:6px;height:3px;border-radius:3px;background:var(--primary)
}

.mobile-drawer{
  display:none;border-bottom:1px solid var(--line);background:var(--bg-1);
}
.mobile-drawer.open{display:block}
.mobile-drawer a{
  display:flex;align-items:center;height:52px;padding:0 24px;font-size:15px;color:var(--text-2);
  border-left:3px solid transparent;border-bottom:1px solid rgba(36,45,62,.6)
}
.mobile-drawer a.active{color:var(--primary);border-left-color:var(--primary);background:var(--primary-soft-2);font-weight:600}
.mobile-drawer .drawer-search{padding:12px 24px 20px}
.mobile-drawer .drawer-search input{
  width:100%;height:44px;padding:0 14px;background:var(--surface);border:1px solid var(--line);border-radius:10px;font-size:14px
}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 460px at 82% 8%, rgba(33,230,166,.13), transparent 62%),
    radial-gradient(620px 380px at 6% 88%, rgba(255,92,138,.09), transparent 66%),
    var(--bg-0);
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.035;
  background-image:linear-gradient(var(--text-1) 1px,transparent 1px),linear-gradient(90deg,var(--text-1) 1px,transparent 1px);
  background-size:32px 32px;
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center;padding:80px 0 88px}
.hero-badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.hero h1{
  font-size:50px;line-height:1.15;font-weight:700;letter-spacing:.005em;margin-bottom:20px;
}
.hero h1 span{color:var(--primary)}
.hero-sub{font-size:17px;line-height:1.85;color:var(--text-2);max-width:560px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;align-items:center;margin-bottom:28px}
.hero-stats{display:flex;flex-wrap:wrap;gap:32px;padding-top:24px;border-top:1px solid var(--line)}
.hero-stats div{display:flex;flex-direction:column;gap:2px}
.hero-stats strong{font-family:var(--font-num);font-size:22px;font-weight:700;color:var(--text-1)}
.hero-stats span{font-size:13px;color:var(--text-3)}

.hero-visual{position:relative;min-height:420px}
.hero-frame{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid rgba(33,230,166,.32);
  box-shadow:0 0 0 1px rgba(33,230,166,.12),0 40px 90px -40px rgba(0,0,0,.95),0 30px 80px -40px rgba(33,230,166,.4);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 28px),calc(100% - 28px) 100%,0 100%);
  aspect-ratio:16/9;
}
.hero-frame img{width:100%;height:100%;object-fit:cover}
.hero-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,15,20,.1) 0%,rgba(12,15,20,.62) 100%);
}
.hero-shot{
  position:absolute;width:150px;aspect-ratio:9/16;border-radius:18px;overflow:hidden;
  border:1px solid var(--line);background:var(--surface);
  box-shadow:0 26px 60px -26px rgba(0,0,0,.95);
}
.hero-shot img{width:100%;height:100%;object-fit:cover}
.hero-shot.s1{right:-14px;bottom:-30px;z-index:3;border-color:rgba(33,230,166,.42)}
.hero-shot.s2{left:-26px;bottom:22px;width:126px;z-index:4;transform:rotate(-4deg)}

/* ---------- 下载组 ---------- */
.download-band{background:var(--bg-1);border-bottom:1px solid var(--line)}
.download-band .container{padding-top:56px;padding-bottom:56px}
.download-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr 1fr;gap:16px}
.dl-card{
  display:flex;align-items:center;gap:14px;padding:18px 20px;border-radius:var(--r-card);
  background:var(--surface);border:1px solid var(--line);
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
  min-height:96px;
}
.dl-card:hover{border-color:rgba(33,230,166,.35);box-shadow:var(--shadow-1);transform:translateY(-2px)}
.dl-card .dl-icon{
  width:44px;height:44px;flex:none;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--surface-2);color:var(--primary);border:1px solid var(--line)
}
.dl-card .dl-text{display:flex;flex-direction:column;gap:2px;min-width:0}
.dl-card .dl-text strong{font-size:16px;font-weight:600}
.dl-card .dl-text small{font-size:12.5px;color:var(--text-3);line-height:1.6}
.dl-card.primary{background:var(--primary);border-color:var(--primary);color:var(--primary-ink)}
.dl-card.primary .dl-icon{background:rgba(4,35,26,.14);border-color:rgba(4,35,26,.2);color:var(--primary-ink)}
.dl-card.primary .dl-text small{color:rgba(4,35,26,.72)}
.dl-qr{display:flex;align-items:center;gap:14px}
.dl-qr .qr-box{
  width:76px;height:76px;border-radius:12px;background:#fff;padding:8px;flex:none;
  display:flex;align-items:center;justify-content:center;overflow:hidden
}
.dl-qr .qr-box img{width:100%;height:100%;object-fit:cover;border-radius:6px}

/* ---------- 功能价值区 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.f-card{
  position:relative;padding:32px;border-radius:var(--r-card);
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-1);
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
  display:flex;flex-direction:column;gap:16px;
}
.f-card:hover{border-color:rgba(33,230,166,.35);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.f-card.wide{grid-column:span 2;display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center}
.f-icon{
  width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary);border:1px solid rgba(33,230,166,.24)
}
.f-card h3{font-size:21px;font-weight:600;line-height:1.4}
.f-card p{font-size:15px;line-height:1.8;color:var(--text-2)}
.f-media{border-radius:var(--r-card);overflow:hidden;aspect-ratio:16/10;border:1px solid var(--line)}
.f-media img{width:100%;height:100%;object-fit:cover}
.f-list{display:grid;gap:10px}
.f-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);line-height:1.7}
.f-list li::before{content:"";width:6px;height:6px;flex:none;margin-top:9px;border-radius:2px;background:var(--primary)}

/* ---------- 截图轮播 ---------- */
.shot-section{position:relative}
.carousel-wrap{position:relative}
.carousel-track{
  display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:8px 4px 24px;scrollbar-width:none;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 40px,#000 calc(100% - 40px),transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 40px,#000 calc(100% - 40px),transparent 100%);
}
.carousel-track::-webkit-scrollbar{display:none}
.shot-card{
  flex:0 0 260px;scroll-snap-align:center;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);background:var(--surface-2);aspect-ratio:9/16;
  transition:border-color var(--ease),box-shadow var(--ease);position:relative;
}
.shot-card img{width:100%;height:100%;object-fit:cover}
.shot-card.is-active{border-color:var(--primary);box-shadow:0 0 0 1px rgba(33,230,166,.4),0 24px 60px -28px rgba(33,230,166,.45)}
.shot-cap{
  position:absolute;left:12px;right:12px;bottom:12px;padding:8px 12px;border-radius:10px;
  background:rgba(12,15,20,.78);border:1px solid var(--line);font-size:13px;color:var(--text-1);text-align:center
}
.carousel-nav{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:8px}
.carousel-arrows{display:flex;gap:8px}
.round-btn{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:var(--surface);
  display:flex;align-items:center;justify-content:center;color:var(--text-1);
  transition:border-color var(--ease),background-color var(--ease),color var(--ease)
}
.round-btn:hover{border-color:rgba(33,230,166,.5);color:var(--primary);background:var(--surface-2)}
.dots{display:flex;align-items:center;gap:8px}
.dot{width:8px;height:8px;border-radius:var(--r-pill);background:var(--surface-2);border:1px solid var(--line);transition:all 260ms ease}
.dot.is-active{width:24px;background:var(--primary);border-color:var(--primary)}

/* ---------- 系统要求 ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.spec-card{
  padding:24px;border-radius:var(--r-card);background:var(--surface);border:1px solid var(--line);
  display:flex;gap:16px;align-items:flex-start;transition:border-color var(--ease),box-shadow var(--ease)
}
.spec-card:hover{border-color:rgba(33,230,166,.3);box-shadow:var(--shadow-1)}
.spec-card .spec-icon{color:var(--primary);flex:none;margin-top:2px}
.spec-card h4{font-size:13px;font-weight:500;color:var(--text-3);letter-spacing:.06em;margin-bottom:6px}
.spec-card strong{display:block;font-size:17px;font-weight:600;color:var(--text-1);line-height:1.6}
.spec-card small{display:block;margin-top:6px;font-size:13px;color:var(--text-2);line-height:1.7}

/* ---------- 评价墙 ---------- */
.review-section{position:relative;overflow:hidden}
.review-section::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.03;
  background-image:linear-gradient(var(--text-1) 1px,transparent 1px),linear-gradient(90deg,var(--text-1) 1px,transparent 1px);
  background-size:32px 32px;
}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;position:relative}
.review-col{display:grid;gap:24px}
.review-col:nth-child(2){padding-top:32px}
.review-col:nth-child(3){padding-top:16px}
.review-card{
  padding:24px;border-radius:var(--r-card);background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--shadow-1);transition:border-color var(--ease),box-shadow var(--ease)
}
.review-card:hover{border-color:rgba(33,230,166,.3);box-shadow:var(--shadow-hover)}
.stars{color:var(--amber);font-size:14px;letter-spacing:2px;margin-bottom:12px}
.review-card p{font-size:15px;line-height:1.8;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.review-meta{display:flex;align-items:center;gap:10px;margin-top:16px;padding-top:16px;border-top:1px solid var(--line)}
.avatar{
  width:36px;height:36px;border-radius:50%;flex:none;display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary);font-weight:700;font-size:14px;border:1px solid rgba(33,230,166,.24)
}
.review-meta .rv-name{font-size:14px;font-weight:600;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.review-meta .rv-time{font-size:12.5px;color:var(--text-3)}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;border-radius:var(--r-card);overflow:hidden;
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-1);
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.news-card:hover{border-color:rgba(33,230,166,.35);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.news-cover{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2)}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease}
.news-card:hover .news-cover img{transform:scale(1.03)}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body h3{font-size:18px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:15px;line-height:1.75;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3)
}
.news-foot .link-arrow{min-height:auto;margin-left:auto;font-size:13px}
.empty-state{
  grid-column:1/-1;padding:56px 24px;border-radius:var(--r-card);border:1px dashed var(--line);
  background:var(--surface);text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px
}
.empty-state svg{color:var(--text-3)}
.empty-state p{color:var(--text-2);font-size:15px}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{border:1px solid var(--line);border-radius:var(--r-card);background:var(--surface);overflow:hidden;transition:border-color var(--ease)}
.faq-item.open{border-color:rgba(33,230,166,.35)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 24px;font-size:16px;font-weight:600;text-align:left;color:var(--text-1)
}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  width:24px;height:24px;flex:none;position:relative;border-radius:50%;border:1px solid var(--line);
  transition:transform 240ms ease,border-color var(--ease)
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--text-2);border-radius:2px;transition:background-color var(--ease)
}
.faq-icon::before{left:50%;top:6px;width:1.6px;height:12px;transform:translateX(-50%)}
.faq-icon::after{top:50%;left:6px;height:1.6px;width:12px;transform:translateY(-50%)}
.faq-item.open .faq-icon{transform:rotate(45deg);border-color:var(--primary)}
.faq-item.open .faq-icon::before,.faq-item.open .faq-icon::after{background:var(--primary)}
.faq-a{display:none;padding:0 24px 20px;font-size:15px;line-height:1.8;color:var(--text-2)}
.faq-item.open .faq-a{display:block}

/* ---------- 底部 CTA ---------- */
.cta-band{
  background:linear-gradient(90deg,rgba(33,230,166,.08) 0%,rgba(33,230,166,0) 70%);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:56px 0}
.cta-inner h2{font-size:30px;line-height:1.3;font-weight:700;margin-bottom:8px}
.cta-inner p{color:var(--text-2);font-size:15px}
.cta-actions{display:flex;gap:16px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line)}
.footer-main{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px;padding:64px 0 48px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--text-2);max-width:320px}
.footer-contact{margin-top:18px;display:grid;gap:6px;font-size:13.5px;color:var(--text-3)}
.footer-contact span{color:var(--text-2)}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{display:grid;gap:2px}
.footer-col a{display:inline-flex;align-items:center;min-height:36px;font-size:14px;color:var(--text-2);transition:color var(--ease)}
.footer-col a:hover{color:var(--primary)}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3)
}
.footer-bottom .fb-links{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom a:hover{color:var(--primary)}

/* 移动底部下载条 */
.mobile-dlbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;height:64px;
  background:rgba(18,23,34,.96);backdrop-filter:blur(8px);border-top:1px solid var(--line);
  align-items:center;justify-content:space-between;gap:16px;padding:0 16px
}
.mobile-dlbar span{font-size:13px;color:var(--text-2)}
.mobile-dlbar .btn{min-height:44px;padding:0 20px;font-size:14px}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero h1{font-size:44px}
  .download-grid{grid-template-columns:repeat(2,1fr)}
  .footer-main{grid-template-columns:1.4fr 1fr 1fr;gap:40px}
}
@media (max-width:1023px){
  .container{padding:0 20px}
  .search{display:none}
  .hero-inner{grid-template-columns:1fr;gap:48px;padding:64px 0 72px}
  .hero-visual{min-height:auto;max-width:620px}
  .hero-shot.s1{width:120px;right:0;bottom:-24px}
  .hero-shot.s2{display:none}
  .f-card.wide{grid-template-columns:1fr;gap:24px}
  .section{padding:64px 0}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:repeat(2,1fr)}
  .review-col:nth-child(3){padding-top:0}
  .footer-main{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{padding-bottom:64px}
  .container{padding:0 16px}
  .brandbar-inner{height:64px;gap:16px}
  .brandbar-actions .text-link{display:none}
  .brandbar-actions .btn-primary{display:none}
  .menu-toggle{display:flex}
  .channelbar{display:none}
  .section{padding:48px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .section-head h2{font-size:26px}
  .hero h1{font-size:34px}
  .hero-sub{font-size:15.5px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-stats{gap:20px}
  .download-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
  .f-card.wide{grid-column:span 1}
  .spec-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .review-col{padding-top:0!important}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:44px 0}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-main{grid-template-columns:1fr 1fr;padding:44px 0 32px;gap:28px}
  .footer-brand{grid-column:1/-1}
  .mobile-dlbar{display:flex}
  .shot-card{flex:0 0 76vw}
  .carousel-arrows{display:none}
}
@media (max-width:420px){
  .hero h1{font-size:30px}
  .section-head h2{font-size:23px}
  .cta-inner h2{font-size:23px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
}

/* roulang page: category1 */
:root{
  --bg-0:#0C0F14;--bg-1:#121722;--surface:#161C28;--surface-2:#1D2533;--line:#242D3E;
  --primary:#21E6A6;--primary-ink:#04231A;--primary-soft:rgba(33,230,166,.12);
  --accent:#FF5C8A;--amber:#FFB020;--danger:#FF5A5A;--success:#3ED598;
  --text-1:#EAF0F7;--text-2:#9AA7B8;--text-3:#6B7788;
  --r-card:16px;--r-lg:20px;--r-btn:10px;--r-pill:999px;
  --sp-1:8px;--sp-2:16px;--sp-3:24px;--sp-4:32px;--sp-5:48px;--sp-6:64px;--sp-7:96px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
  --shadow-hover:0 0 0 1px rgba(33,230,166,.4),0 24px 60px -28px rgba(33,230,166,.35);
  --maxw:1200px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-0);color:var(--text-1);font-family:var(--font);
  font-size:16px;line-height:1.8;letter-spacing:.01em;
  background-image:linear-gradient(rgba(255,255,255,.02) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);
  background-size:32px 32px;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em}
p{margin:0}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font-family:inherit}
:focus{outline:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ============ 顶部品牌行 ============ */
.topbar{
  background:rgba(12,15,20,.94);border-bottom:1px solid var(--line);
  position:relative;z-index:60;
}
.topbar-inner{display:flex;align-items:center;gap:var(--sp-3);height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary),#0ea87a);color:var(--primary-ink);
  font-weight:800;font-size:15px;letter-spacing:.02em;
  box-shadow:0 0 0 1px rgba(33,230,166,.35),0 10px 26px -14px rgba(33,230,166,.7);
}
.logo-text{font-size:19px;font-weight:700}
.logo-text em{font-style:normal;color:var(--primary)}
.search{flex:1 1 auto;max-width:320px;position:relative;display:none}
.search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--text-3)}
.search input{
  width:100%;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:var(--surface);color:var(--text-1);padding:0 14px 0 40px;font-size:14px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.search input::placeholder{color:var(--text-3)}
.search input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(33,230,166,.12)}
.top-actions{margin-left:auto;display:flex;align-items:center;gap:var(--sp-2)}
.link-quiet{color:var(--text-2);font-size:14px;min-height:44px;display:inline-flex;align-items:center;transition:color .16s ease}
.link-quiet:hover{color:var(--primary)}

/* ============ 频道行 ============ */
.channelbar{
  position:sticky;top:0;z-index:55;background:rgba(12,15,20,.92);
  border-bottom:1px solid var(--line);backdrop-filter:blur(8px);
}
.channelbar-inner{display:flex;align-items:center;gap:8px;height:52px;overflow-x:auto;scrollbar-width:none}
.channelbar-inner::-webkit-scrollbar{display:none}
.channel{
  position:relative;white-space:nowrap;padding:12px 20px;border-radius:8px;
  font-size:15px;color:var(--text-2);min-height:44px;display:inline-flex;align-items:center;
  transition:background .16s ease,color .16s ease;
}
.channel:hover{background:rgba(33,230,166,.06);color:var(--text-1)}
.channel.active{background:rgba(33,230,166,.08);color:var(--text-1);font-weight:600}
.channel.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:3px;
  border-radius:3px 3px 0 0;background:var(--primary);
}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);align-items:center;justify-content:center;color:var(--text-1);
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 28px;border-radius:var(--r-btn);font-size:16px;font-weight:600;
  transition:transform .16s ease,box-shadow .2s ease,filter .16s ease,border-color .16s ease,color .16s ease;
  min-height:44px;
}
.btn-sm{height:44px;padding:0 20px;font-size:14px}
.btn-primary{background:var(--primary);color:var(--primary-ink);box-shadow:0 14px 34px -18px rgba(33,230,166,.85)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(33,230,166,.5),0 22px 50px -22px rgba(33,230,166,.6)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{border:1px solid var(--line);color:var(--text-1);background:transparent}
.btn-ghost:hover{border-color:rgba(33,230,166,.4);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}

/* ============ 标签 / 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);
  font-size:13px;line-height:1.6;border:1px solid var(--line);color:var(--text-2);background:var(--surface);
}
.badge-primary{border-color:rgba(33,230,166,.45);color:var(--primary);background:var(--primary-soft)}
.badge-amber{border-color:rgba(255,176,32,.4);color:var(--amber);background:rgba(255,176,32,.1)}
.badge-accent{border-color:rgba(255,92,138,.4);color:var(--accent);background:rgba(255,92,138,.1)}

/* ============ 页面小首屏 ============ */
.page-hero{
  position:relative;border-bottom:1px solid var(--line);
  background:
    linear-gradient(180deg,rgba(33,230,166,.06),transparent 62%),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(12,15,20,.96) 0%,rgba(12,15,20,.86) 46%,rgba(12,15,20,.62) 100%);
}
.page-hero-inner{position:relative;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:var(--sp-5);align-items:center;padding:56px 0;min-height:320px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:var(--sp-2)}
.breadcrumb a{color:var(--text-3);transition:color .16s ease}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span.sep{color:var(--line)}
.breadcrumb .current{color:var(--primary)}
.page-hero h1{font-size:44px;line-height:1.15;margin-bottom:var(--sp-2)}
.page-hero h1 .hl{color:var(--primary)}
.page-hero .lead{color:var(--text-2);font-size:16px;max-width:56ch}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:var(--sp-2)}
.hero-visual{
  position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:16/10;
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  transform:skewX(-2deg);
}
.hero-visual img{width:100%;height:100%;border-radius:0;transform:skewX(2deg) scale(1.06)}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(12,15,20,.72) 100%);
}
.hero-visual .caption{
  position:absolute;left:16px;bottom:14px;z-index:2;font-size:13px;color:var(--text-2);
  display:flex;align-items:center;gap:8px;transform:skewX(2deg);
}

/* ============ 板块 ============ */
.section{padding:var(--sp-7) 0}
.section.tight{padding:var(--sp-6) 0}
.section.alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{margin-bottom:var(--sp-4);max-width:70ch}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--primary);
  letter-spacing:.08em;margin-bottom:10px;
}
.section-head .eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--primary)}
.section-head h2{font-size:32px;margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:16px}
.split-head{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--sp-3);flex-wrap:wrap}
.textlink{color:var(--primary);font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:6px;min-height:44px}
.textlink svg{transition:transform .18s ease}
.textlink:hover svg{transform:translateX(4px)}

/* ============ 下载通道卡 ============ */
.dl-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--sp-3)}
.dl-card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;display:flex;flex-direction:column;gap:6px;box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;cursor:pointer;
}
.dl-card:hover{transform:translateY(-4px);border-color:rgba(33,230,166,.35);box-shadow:var(--shadow-hover)}
.dl-card .ico{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:var(--surface-2);border:1px solid var(--line);color:var(--primary);margin-bottom:10px;
}
.dl-card .t{font-size:18px;font-weight:600}
.dl-card .meta{font-size:13px;color:var(--text-3)}
.dl-card.featured{background:linear-gradient(180deg,rgba(33,230,166,.14),rgba(33,230,166,.02));border-color:rgba(33,230,166,.42)}
.dl-card.featured .ico{background:rgba(33,230,166,.16);border-color:rgba(33,230,166,.4)}
.dl-card .flag{
  position:absolute;top:16px;right:16px;font-size:12px;padding:3px 10px;border-radius:var(--r-pill);
  background:var(--primary);color:var(--primary-ink);font-weight:600;
}

/* ============ 步骤流 ============ */
.step-list{position:relative;display:grid;gap:var(--sp-3);padding-left:0}
.step-item{
  position:relative;display:grid;grid-template-columns:64px minmax(0,1fr);gap:var(--sp-3);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-card);transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.step-item:hover{border-color:rgba(33,230,166,.32);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.step-no{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  font-size:18px;font-weight:700;color:var(--primary);background:var(--primary-soft);
  border:1px solid rgba(33,230,166,.35);font-variant-numeric:tabular-nums;
}
.step-body h3{font-size:20px;margin-bottom:8px}
.step-body p{color:var(--text-2);font-size:15px}
.step-body ul{margin-top:12px;display:grid;gap:8px}
.step-body li{position:relative;padding-left:18px;color:var(--text-2);font-size:14.5px}
.step-body li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:2px;background:var(--primary);
}
.step-note{
  margin-top:14px;padding:12px 16px;border-left:4px solid var(--primary);
  background:rgba(33,230,166,.06);border-radius:0 10px 10px 0;font-size:14px;color:var(--text-2);
}

/* ============ 图文并排卡 ============ */
.dual{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--sp-3)}
.panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-card);display:flex;flex-direction:column;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.panel:hover{border-color:rgba(33,230,166,.3);box-shadow:var(--shadow-hover)}
.panel .thumb{aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line)}
.panel .thumb img{width:100%;height:100%;transition:transform .4s ease}
.panel:hover .thumb img{transform:scale(1.03)}
.panel .body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.panel .body h3{font-size:20px}
.panel .body p{color:var(--text-2);font-size:15px}
.mini-steps{display:grid;gap:10px;margin-top:4px}
.mini-steps li{display:grid;grid-template-columns:26px minmax(0,1fr);gap:10px;font-size:14.5px;color:var(--text-2);align-items:start}
.mini-steps .idx{
  width:26px;height:26px;border-radius:8px;background:var(--surface-2);border:1px solid var(--line);
  display:grid;place-items:center;font-size:13px;color:var(--primary);font-weight:600;
  font-variant-numeric:tabular-nums;
}

/* ============ 规格卡 ============ */
.spec-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--sp-3)}
.spec-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;display:flex;flex-direction:column;gap:6px;box-shadow:var(--shadow-card);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.spec-card:hover{border-color:rgba(33,230,166,.3);box-shadow:var(--shadow-hover)}
.spec-card .k{font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:8px}
.spec-card .v{font-size:17px;color:var(--text-1);font-weight:600}
.spec-card .hint{font-size:13.5px;color:var(--text-2)}
.spec-table-wrap{
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--surface);
  box-shadow:var(--shadow-card);
}
.spec-table{width:100%;border-collapse:collapse;font-size:14.5px}
.spec-table th,.spec-table td{padding:14px 18px;text-align:left;border:0;line-height:1.6}
.spec-table thead th{color:var(--text-2);font-size:13px;font-weight:600;background:var(--surface-2)}
.spec-table tbody tr:nth-child(odd){background:rgba(255,255,255,.015)}
.spec-table tbody tr{height:48px;border-top:1px solid var(--line)}
.spec-table td:first-child{color:var(--text-2)}
.spec-table td strong{color:var(--text-1);font-weight:600}

/* ============ 核对清单 ============ */
.check-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--sp-3)}
.check-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;
  box-shadow:var(--shadow-card);transition:transform .2s ease,border-color .2s ease;
}
.check-card:hover{transform:translateY(-3px);border-color:rgba(33,230,166,.3)}
.check-card .ico{color:var(--primary);margin-bottom:12px}
.check-card h3{font-size:18px;margin-bottom:8px}
.check-card p{font-size:14.5px;color:var(--text-2)}

/* ============ FAQ ============ */
.faq{display:grid;gap:12px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.open{border-color:rgba(33,230,166,.35);box-shadow:var(--shadow-hover)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 22px;min-height:56px;text-align:left;font-size:16px;font-weight:600;color:var(--text-1);
  transition:color .16s ease;
}
.faq-q:hover{color:var(--primary)}
.faq-q .sign{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--primary);transition:transform .25s ease,background .2s ease;
}
.faq-item.open .faq-q .sign{transform:rotate(45deg);background:var(--primary-soft)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a .inner{padding:0 22px 20px;color:var(--text-2);font-size:15px}

/* ============ CTA 带 ============ */
.cta-band{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:linear-gradient(90deg,rgba(33,230,166,.09),rgba(33,230,166,0) 72%);
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4);padding:var(--sp-5) 0;flex-wrap:wrap}
.cta-inner h2{font-size:30px;margin-bottom:8px}
.cta-inner p{color:var(--text-2);font-size:15px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding-top:var(--sp-6)}
.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:var(--sp-4);padding-bottom:var(--sp-5)}
.site-footer .logo{margin-bottom:16px}
.footer-brand p{color:var(--text-2);font-size:14.5px;max-width:44ch}
.footer-contact{margin-top:16px;display:grid;gap:6px;font-size:13.5px;color:var(--text-3)}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-1)}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:var(--text-2);font-size:14.5px;transition:color .16s ease}
.footer-col a:hover{color:var(--primary)}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;display:flex;align-items:center;
  justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:var(--text-3);
}
.fb-links{display:flex;gap:20px;flex-wrap:wrap}
.fb-links a{color:var(--text-3);transition:color .16s ease}
.fb-links a:hover{color:var(--primary)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .dl-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .check-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  .search{display:none}
  .page-hero-inner{grid-template-columns:1fr;gap:var(--sp-4);padding:48px 0}
  .hero-visual{transform:none;aspect-ratio:16/9}
  .hero-visual img{transform:none}
  .hero-visual .caption{transform:none}
  .page-hero h1{font-size:38px}
  .dual,.spec-grid{grid-template-columns:1fr}
  .section{padding:var(--sp-6) 0}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .topbar-inner{height:64px}
  .topbar-inner .btn-primary{display:none}
  .nav-toggle{display:inline-flex}
  .channelbar-inner{height:auto;flex-direction:column;align-items:stretch;padding:0;max-height:0;overflow:hidden;transition:max-height .28s ease}
  .channelbar.open .channelbar-inner{max-height:420px;padding:8px 0}
  .channelbar-inner .channel{width:100%;justify-content:flex-start}
  .channelbar-inner .channel.active::after{left:0;right:auto;top:10px;bottom:10px;width:3px;height:auto;border-radius:0 3px 3px 0}
  .channel.active{padding-left:22px}
  .page-hero h1{font-size:30px}
  .section-head h2{font-size:24px}
  .dl-grid,.check-grid{grid-template-columns:1fr}
  .step-item{grid-template-columns:1fr;gap:14px;padding:20px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-main{grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--sp-3)}
  .spec-table th,.spec-table td{padding:12px}
}
@media (max-width:420px){
  .page-hero h1{font-size:26px}
  .step-body h3{font-size:18px}
  .footer-main{grid-template-columns:1fr}
}

/* roulang page: article */
:root{
  --bg-0:#0C0F14; --bg-1:#121722; --surface:#161C28; --surface-2:#1D2533; --line:#242D3E;
  --primary:#21E6A6; --primary-ink:#04231A; --primary-soft:rgba(33,230,166,.12);
  --accent:#FF5C8A; --amber:#FFB020; --danger:#FF5A5A; --success:#3ED598;
  --text-1:#EAF0F7; --text-2:#9AA7B8; --text-3:#6B7788;
  --radius-card:16px; --radius-btn:10px; --radius-badge:999px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
  --shadow-hover:0 0 0 1px rgba(33,230,166,.4), 0 24px 60px -28px rgba(33,230,166,.35);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg-0);color:var(--text-1);
  font-family:var(--font-cn);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(33,230,166,.28)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 顶部品牌行 ---------- */
.site-header{position:relative;z-index:50;background:var(--bg-0)}
.topbar{border-bottom:1px solid var(--line)}
.topbar-inner{display:flex;align-items:center;gap:20px;height:72px}
.logo{display:flex;align-items:center;gap:10px;min-height:44px}
.logo-mark{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary),#0FA97A);
  color:var(--primary-ink);font-family:var(--font-num);font-weight:800;font-size:15px;letter-spacing:.5px;
}
.logo-text{font-size:19px;font-weight:700;letter-spacing:.5px}
.logo-text em{font-style:normal;color:var(--primary);font-family:var(--font-num)}
.search{position:relative;flex:0 1 320px;margin-left:auto}
.search input{
  width:100%;height:44px;border-radius:var(--radius-btn);
  background:var(--surface);border:1px solid var(--line);
  padding:0 46px 0 16px;font-size:14.5px;transition:.18s;
}
.search input::placeholder{color:var(--text-3)}
.search input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(33,230,166,.12);outline:none}
.search button{position:absolute;right:6px;top:6px;width:32px;height:32px;border-radius:8px;display:grid;place-items:center;color:var(--text-2)}
.search button:hover{color:var(--primary);background:var(--primary-soft)}
.topbar-actions{display:flex;align-items:center;gap:16px}
.text-link{font-size:14px;color:var(--text-2);padding:6px 0;border-bottom:1px solid transparent}
.text-link:hover{color:var(--primary);border-color:rgba(33,230,166,.5)}
.menu-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);align-items:center;justify-content:center;color:var(--text-1)}
.menu-toggle:hover{border-color:rgba(33,230,166,.4);color:var(--primary)}

/* ---------- 频道行 ---------- */
.channelbar{
  position:sticky;top:0;z-index:45;
  background:rgba(12,15,20,.92);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.channelbar-inner{display:flex;align-items:center;gap:8px;height:52px;overflow-x:auto;scrollbar-width:none}
.channelbar-inner::-webkit-scrollbar{display:none}
.channel{
  position:relative;display:inline-flex;align-items:center;white-space:nowrap;
  padding:12px 20px;min-height:44px;border-radius:8px;
  font-size:15px;font-weight:600;color:var(--text-2);
  transition:background-color .16s ease,color .16s ease;
}
.channel:hover{background:rgba(33,230,166,.06);color:var(--text-1)}
.channel.active{color:var(--text-1);background:var(--primary-soft)}
.channel.active::after{content:"";position:absolute;left:20px;right:20px;bottom:0;height:3px;border-radius:3px;background:var(--primary)}
.mobile-drawer{
  position:fixed;left:0;right:0;top:72px;z-index:48;display:none;
  flex-direction:column;padding:12px 16px 20px;
  background:var(--bg-1);border-bottom:1px solid var(--line);
  box-shadow:0 30px 60px -30px rgba(0,0,0,.95);
}
.mobile-drawer.open{display:flex}
.mobile-drawer a{
  display:flex;align-items:center;line-height:52px;min-height:52px;
  padding:0 14px;border-radius:8px;color:var(--text-2);font-weight:600;
}
.mobile-drawer a.active{color:var(--text-1);background:var(--primary-soft);border-left:3px solid var(--primary)}

/* ---------- 按钮 / 徽章 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:52px;padding:0 28px;border-radius:var(--radius-btn);
  border:1px solid transparent;font-size:16px;font-weight:600;
  transition:transform .18s ease,filter .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{background:var(--primary);color:var(--primary-ink)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 24px 60px -28px rgba(33,230,166,.5)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text-1)}
.btn-ghost:hover{border-color:rgba(33,230,166,.4);color:var(--primary)}
.btn-sm{min-height:44px;padding:0 20px;font-size:15px}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;
  padding:4px 12px;border-radius:var(--radius-badge);
  border:1px solid var(--line);color:var(--text-2);
}
.badge-primary{color:var(--primary);border-color:rgba(33,230,166,.35);background:var(--primary-soft)}
.badge-accent{color:var(--accent);border-color:rgba(255,92,138,.35);background:rgba(255,92,138,.1)}

/* ---------- 面包屑与文章头部 ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-2);padding:28px 0 0}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:var(--text-3)}
.crumb .current{color:var(--primary)}
.article-head{padding:24px 0 32px}
.kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--primary);background:var(--primary-soft);
  border:1px solid rgba(33,230,166,.3);border-radius:var(--radius-badge);
  padding:6px 14px;
}
.article-title{font-size:36px;line-height:1.25;letter-spacing:.2px;max-width:900px;margin:20px 0 0}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;font-size:14px;color:var(--text-2)}
.meta-row .dot{color:var(--text-3)}
.meta-row .num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ---------- 正文布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start;padding-bottom:64px}
.article-main{min-width:0}
.article-body{max-width:780px;font-size:17px;line-height:1.85;color:#DCE4EE;text-align:left}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;font-size:28px;line-height:1.35;color:var(--text-1);
  margin:2em 0 .8em;padding-left:18px;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;background:var(--primary)}
.article-body h3{font-size:22px;line-height:1.4;color:var(--text-1);margin:1.6em 0 .6em}
.article-body h4{font-size:18px;color:var(--text-1);margin:1.4em 0 .5em}
.article-body ul,.article-body ol{margin:0 0 1.2em}
.article-body li{position:relative;padding-left:20px;margin-bottom:.5em}
.article-body li::before{content:"";position:absolute;left:0;top:.78em;width:6px;height:6px;border-radius:2px;background:var(--primary)}
.article-body ol{counter-reset:olc}
.article-body ol li{padding-left:28px;counter-increment:olc}
.article-body ol li::before{content:counter(olc);width:auto;height:auto;top:0;left:0;background:none;color:var(--primary);font-family:var(--font-num);font-weight:700}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;border-left:4px solid var(--primary);
  border-radius:0 12px 12px 0;background:rgba(33,230,166,.06);color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:1.6em auto;box-shadow:var(--shadow-card)}
.article-body figure{margin:1.6em 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--text-3);margin-top:10px}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em;
  background:var(--surface-2);border:1px solid var(--line);border-radius:6px;padding:2px 6px;
}
.article-body pre{
  margin:1.6em 0;padding:16px 20px;overflow-x:auto;
  background:#0A0D12;border:1px solid var(--line);border-radius:12px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14.5px;line-height:1.7;
}
.article-body pre code{background:none;border:none;padding:0}
.article-body table{
  width:100%;margin:1.6em 0;border:1px solid var(--line);border-radius:12px;
  border-collapse:separate;border-spacing:0;overflow:hidden;font-size:15px;
}
.article-body th{background:var(--surface-2);text-align:left;font-weight:600;color:var(--text-1)}
.article-body th,.article-body td{padding:14px 16px;border-bottom:1px solid var(--line);line-height:1.7}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.article-body tbody tr:last-child td{border-bottom:none}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2.4em 0}

.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:16px;
  padding:56px 24px;text-align:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
}
.empty-state svg{color:var(--text-3)}
.empty-state p{margin:0;color:var(--text-2);font-size:15px}

/* ---------- 标签与返回 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:40px 0 0;padding-top:24px;border-top:1px solid var(--line)}
.tag{font-size:13px;color:var(--text-2);border:1px solid var(--line);border-radius:var(--radius-badge);padding:6px 14px}
.tag:hover{border-color:rgba(33,230,166,.4);color:var(--primary)}
.back-row{display:flex;flex-wrap:wrap;gap:16px;margin-top:28px}
.arrow-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:15px;font-weight:600;min-height:44px}
.arrow-link svg{transition:transform .18s ease}
.arrow-link:hover svg{transform:translateX(4px)}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:76px;display:flex;flex-direction:column;gap:24px}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px 20px 24px;box-shadow:var(--shadow-card);
}
.side-card h3{font-size:16px;margin-bottom:14px}
.side-card .side-note{font-size:13px;color:var(--text-3);margin:0}
.side-list{display:flex;flex-direction:column;gap:12px}
.side-list a{display:flex;gap:10px;font-size:14px;line-height:1.6;color:var(--text-2)}
.side-list a:hover{color:var(--primary)}
.side-list .num{font-family:var(--font-num);font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums}
.side-cta{display:flex;flex-direction:column;gap:12px}

/* ---------- 相关阅读 ---------- */
.related{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head h2{font-size:30px;line-height:1.25}
.section-head .sub{font-size:15px;color:var(--text-2);margin:8px 0 0}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:box-shadow .3s ease,border-color .3s ease,transform .3s ease;
}
.news-card:hover{border-color:rgba(33,230,166,.35);box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.news-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body h3{font-size:18px;line-height:1.5;font-weight:600}
.news-body p{font-size:15px;line-height:1.75;color:var(--text-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3)}

/* ---------- 底部 CTA ---------- */
.cta-band{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:linear-gradient(90deg,rgba(33,230,166,.08),rgba(33,230,166,0) 70%);
  padding:56px 0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px}
.cta-inner h2{font-size:30px;line-height:1.25}
.cta-inner p{margin:10px 0 0;color:var(--text-2);font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line)}
.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding:64px 0 40px}
.footer-brand p{font-size:14.5px;line-height:1.8;color:var(--text-2);margin:18px 0}
.footer-contact{display:flex;flex-direction:column;gap:6px;font-size:13.5px;color:var(--text-3)}
.footer-col h4{font-size:15px;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--primary)}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);padding:20px 0 28px;font-size:13px;color:var(--text-3);
}
.fb-links{display:flex;flex-wrap:wrap;gap:20px}
.fb-links a:hover{color:var(--primary)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-layout{gap:32px;grid-template-columns:minmax(0,1fr) 280px}
}
@media (max-width:1023px){
  .article-layout{grid-template-columns:1fr}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap}
  .article-side .side-card{flex:1 1 260px}
  .article-title{font-size:31px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-main{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .search{display:none}
  .menu-toggle{display:inline-flex;margin-left:auto}
  .topbar-actions .text-link{display:none}
  .channelbar-inner{gap:4px}
  .channel{padding:12px 16px;font-size:14.5px}
  .crumb{padding-top:20px}
  .article-title{font-size:28px}
  .article-body{font-size:16.5px}
  .article-body h2{font-size:24px}
  .article-body h3{font-size:19px}
  .article-side{flex-direction:column}
  .related{padding:48px 0}
  .card-grid{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .footer-main{grid-template-columns:1fr 1fr;padding:48px 0 32px}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:520px){
  .article-title{font-size:24px}
  .meta-row{font-size:13px;gap:8px}
  .footer-main{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category2 */
:root{
  --bg-0:#0C0F14;
  --bg-1:#121722;
  --surface:#161C28;
  --surface-2:#1D2533;
  --line:#242D3E;
  --primary:#21E6A6;
  --primary-ink:#04231A;
  --primary-soft:rgba(33,230,166,.12);
  --accent:#FF5C8A;
  --amber:#FFB020;
  --danger:#FF5A5A;
  --success:#3ED598;
  --text-1:#EAF0F7;
  --text-2:#9AA7B8;
  --text-3:#6B7788;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:10px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
  --shadow-hover:0 0 0 1px rgba(33,230,166,.4),0 24px 60px -28px rgba(33,230,166,.35);
  --sp-1:8px;--sp-2:16px;--sp-3:24px;--sp-4:32px;--sp-5:48px;--sp-6:64px;--sp-7:96px;
  --maxw:1200px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3{line-height:1.25;font-weight:700;}
svg{flex:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 头部品牌行 ============ */
.site-header{
  position:relative;
  z-index:60;
  background:var(--bg-0);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:var(--sp-3);
  min-height:72px;
}
.logo{display:flex;align-items:center;gap:10px;min-height:44px;}
.logo-mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(150deg,rgba(33,230,166,.22),rgba(255,92,138,.16));
  border:1px solid rgba(33,230,166,.45);
  color:var(--primary);
  font-size:15px;font-weight:700;letter-spacing:.02em;
}
.logo-text{font-size:19px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--primary);}
.search{
  position:relative;
  flex:0 1 320px;
  min-width:200px;
  display:flex;align-items:center;gap:10px;
  height:44px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:var(--surface);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(33,230,166,.12);}
.search svg{color:var(--text-3);}
.search input{
  flex:1;min-width:0;height:100%;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--text-1);
}
.search input::placeholder{color:var(--text-3);}
.header-actions{display:flex;align-items:center;gap:var(--sp-2);margin-left:auto;}
.ghost-link{
  font-size:14px;color:var(--text-2);padding:10px 6px;min-height:44px;display:inline-flex;align-items:center;
  transition:color .16s ease;
}
.ghost-link:hover{color:var(--primary);}
.menu-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-btn);
  color:var(--text-1);
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 28px;
  border-radius:var(--r-btn);
  font-size:16px;font-weight:600;
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease,border-color .18s ease,color .18s ease,background .18s ease;
}
.btn-primary{background:var(--primary);color:var(--primary-ink);box-shadow:0 12px 30px -18px rgba(33,230,166,.9);}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(33,230,166,.5),0 22px 46px -24px rgba(33,230,166,.8);}
.btn-primary:active{transform:translateY(0);filter:brightness(.96);}
.btn-outline{background:transparent;color:var(--text-1);border:1px solid var(--line);}
.btn-outline:hover{border-color:rgba(33,230,166,.4);color:var(--primary);transform:translateY(-2px);}
.btn-sm{height:44px;padding:0 20px;font-size:15px;}
.btn-block{width:100%;}

/* ============ 频道行 ============ */
.channelbar{
  position:sticky;top:0;z-index:50;
  background:rgba(12,15,20,.94);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.channelbar-inner{
  display:flex;align-items:center;gap:8px;
  min-height:52px;
  overflow-x:auto;
  scrollbar-width:none;
}
.channelbar-inner::-webkit-scrollbar{display:none;}
.channel{
  position:relative;
  display:inline-flex;align-items:center;
  min-height:44px;
  padding:12px 20px;
  border-radius:8px;
  font-size:15px;
  color:var(--text-2);
  white-space:nowrap;
  transition:background .16s ease,color .16s ease;
}
.channel:hover{background:rgba(33,230,166,.06);color:var(--text-1);}
.channel.active{background:rgba(33,230,166,.08);color:var(--text-1);font-weight:600;}
.channel.active::after{
  content:"";position:absolute;left:20px;right:20px;bottom:0;height:3px;
  background:var(--primary);border-radius:3px 3px 0 0;
}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);
  padding-top:24px;
}
.breadcrumb a{color:var(--text-3);transition:color .16s ease;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--primary);}

/* ============ 页面小首屏 ============ */
.page-hero{
  position:relative;
  padding-bottom:56px;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(760px 320px at 12% -10%,rgba(33,230,166,.10),transparent 70%),
    radial-gradient(560px 260px at 92% 0%,rgba(255,92,138,.07),transparent 70%);
}
.page-hero-inner{
  display:grid;
  grid-template-columns:1.12fr .88fr;
  gap:var(--sp-5);
  align-items:center;
  padding-top:var(--sp-4);
}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:var(--sp-2);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  min-height:28px;padding:4px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--surface);
  font-size:13px;color:var(--text-2);
  white-space:nowrap;
}
.badge-primary{border-color:rgba(33,230,166,.45);color:var(--primary);background:var(--primary-soft);}
.badge-amber{border-color:rgba(255,176,32,.4);color:var(--amber);background:rgba(255,176,32,.1);}
.badge-accent{border-color:rgba(255,92,138,.4);color:var(--accent);background:rgba(255,92,138,.1);}
.page-hero h1{
  font-size:42px;
  line-height:1.18;
  letter-spacing:.005em;
  margin-bottom:var(--sp-2);
}
.page-hero h1 span{color:var(--primary);}
.lead{
  font-size:16px;
  color:var(--text-2);
  max-width:56ch;
}
.hero-quick{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-top:var(--sp-3);
}
.hero-quick a{
  font-size:14px;color:var(--primary);
  display:inline-flex;align-items:center;gap:6px;
  min-height:44px;
  padding:0 4px;
  border-bottom:1px dashed rgba(33,230,166,.35);
  transition:gap .18s ease,border-color .18s ease;
}
.hero-quick a:hover{gap:10px;border-color:var(--primary);}
.hero-media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  background:var(--surface);
}
.hero-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.hero-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(200deg,rgba(12,15,20,0) 45%,rgba(12,15,20,.65) 100%);
  pointer-events:none;
}
.hero-media-tag{
  position:absolute;left:16px;bottom:16px;z-index:2;
  display:flex;align-items:center;gap:8px;
  padding:8px 14px;
  border-radius:999px;
  background:rgba(12,15,20,.78);
  border:1px solid rgba(33,230,166,.4);
  font-size:13px;color:var(--text-1);
}

/* ============ 通用板块 ============ */
.section{padding:var(--sp-7) 0;}
.section.alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:var(--sp-5);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--primary);
  letter-spacing:.08em;
  margin-bottom:12px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--primary);}
.section-head h2{font-size:32px;margin-bottom:12px;}
.section-head p{font-size:16px;color:var(--text-2);}

/* ============ 图文左右交替 ============ */
.feature-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:var(--sp-5);
  align-items:center;
  padding:var(--sp-4) 0;
}
.feature-row + .feature-row{border-top:1px solid var(--line);}
.feature-row.reverse .feature-media{order:2;}
.feature-text h3{
  font-size:22px;
  margin-bottom:12px;
  display:flex;align-items:center;gap:10px;
}
.feature-text h3 .dot{
  width:8px;height:8px;border-radius:2px;background:var(--primary);flex:none;
}
.feature-text p{color:var(--text-2);font-size:16px;margin-bottom:var(--sp-2);}
.tick-list{display:grid;gap:10px;margin-top:var(--sp-3);}
.tick-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:15px;color:var(--text-2);
  line-height:1.7;
}
.tick-list li svg{margin-top:5px;color:var(--primary);}
.tick-list li b{color:var(--text-1);font-weight:600;}
.feature-media{
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--surface);
  box-shadow:var(--shadow-card);
  transition:box-shadow .3s ease,transform .3s ease;
}
.feature-media:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);}
.feature-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s ease;}
.feature-media:hover img{transform:scale(1.03);}

/* ============ 对照规格卡 ============ */
.compare-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:var(--sp-3);
}
.compare-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:var(--sp-4);
  box-shadow:var(--shadow-card);
  transition:box-shadow .3s ease,border-color .3s ease;
}
.compare-card:hover{box-shadow:var(--shadow-hover);}
.compare-card.highlight{border-color:rgba(33,230,166,.4);}
.compare-card h3{
  font-size:20px;
  display:flex;align-items:center;gap:10px;
  margin-bottom:6px;
}
.compare-card .sub{font-size:13px;color:var(--text-3);margin-bottom:var(--sp-3);}
.compare-list{display:grid;gap:0;}
.compare-list li{
  display:flex;justify-content:space-between;gap:16px;
  align-items:baseline;
  padding:14px 0;
  border-bottom:1px dashed var(--line);
  font-size:15px;
}
.compare-list li:last-child{border-bottom:0;}
.compare-list .k{color:var(--text-3);font-size:13px;flex:none;}
.compare-list .v{color:var(--text-1);text-align:right;}

/* ============ 步骤流 ============ */
.steps{display:grid;gap:var(--sp-2);counter-reset:step;}
.step{
  display:grid;
  grid-template-columns:64px 1fr;
  gap:var(--sp-3);
  align-items:start;
  padding:var(--sp-3);
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  transition:box-shadow .3s ease,transform .3s ease;
}
.step:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.step-no{
  width:52px;height:52px;
  display:grid;place-items:center;
  border-radius:14px;
  background:var(--primary-soft);
  border:1px solid rgba(33,230,166,.4);
  color:var(--primary);
  font-size:19px;font-weight:700;
}
.step-body h3{font-size:19px;margin-bottom:6px;}
.step-body p{font-size:15px;color:var(--text-2);}

/* ============ FAQ ============ */
.faq{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--surface);
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;
  padding:16px 24px;
  text-align:left;
  font-size:16px;font-weight:600;
  color:var(--text-1);
  transition:background .16s ease,color .16s ease;
}
.faq-q:hover{background:rgba(33,230,166,.05);}
.faq-icon{
  position:relative;
  width:20px;height:20px;flex:none;
  transition:transform .28s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--primary);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .3s ease;
}
.faq-item.open .faq-a{grid-template-rows:1fr;}
.faq-a > div{overflow:hidden;}
.faq-a p{
  padding:0 24px 20px;
  font-size:15px;
  color:var(--text-2);
  max-width:82ch;
}

/* ============ 下载区 ============ */
.dl-section{padding:var(--sp-6) 0 var(--sp-7);}
.dl-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--sp-2);
}
.dl-item{
  display:flex;align-items:center;gap:14px;
  padding:18px 20px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--surface);
  box-shadow:var(--shadow-card);
  transition:border-color .2s ease,box-shadow .3s ease,transform .2s ease,background .2s ease;
}
.dl-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(33,230,166,.4);}
.dl-primary{background:linear-gradient(140deg,rgba(33,230,166,.16),rgba(33,230,166,.04));border-color:rgba(33,230,166,.45);}
.dl-ico{
  width:44px;height:44px;flex:none;
  display:grid;place-items:center;
  border-radius:12px;
  background:var(--surface-2);
  border:1px solid var(--line);
  color:var(--primary);
}
.dl-txt{display:grid;gap:2px;min-width:0;}
.dl-txt strong{font-size:16px;font-weight:600;}
.dl-txt span{font-size:13px;color:var(--text-3);}
.dl-qr{
  grid-column:span 3;
  display:flex;align-items:center;gap:20px;
  padding:20px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--surface);
}
.qr-box{
  width:96px;height:96px;flex:none;
  border-radius:12px;
  background:#fff;
  display:grid;place-items:center;
  color:#0C0F14;
  font-size:12px;font-weight:700;text-align:center;line-height:1.5;
}
.dl-qr .qr-text strong{display:block; font-size:16px;margin-bottom:4px;}
.dl-qr .qr-text p{font-size:14px;color:var(--text-2);}

/* ============ CTA 带 ============ */
.cta-band{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:linear-gradient(90deg,rgba(33,230,166,.08),rgba(33,230,166,0) 65%);
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4);
  padding:var(--sp-5) 0;
}
.cta-text h2{font-size:28px;margin-bottom:8px;}
.cta-text p{font-size:15px;color:var(--text-2);}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding:var(--sp-6) 0 0;
}
.footer-main{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:var(--sp-4);
  padding-bottom:var(--sp-5);
}
.footer-brand p{
  font-size:14px;
  color:var(--text-2);
  margin:var(--sp-2) 0;
  max-width:42ch;
}
.footer-contact{display:grid;gap:6px;font-size:13px;color:var(--text-3);}
.footer-col h4{
  font-size:15px;font-weight:600;
  margin-bottom:var(--sp-2);
  color:var(--text-1);
}
.footer-col ul{display:grid;gap:10px;}
.footer-col li a{
  font-size:14px;color:var(--text-2);
  transition:color .16s ease;
}
.footer-col li a:hover{color:var(--primary);}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:var(--sp-2);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-2);
  flex-wrap:wrap;
  padding:20px 0 28px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.fb-links{display:flex;flex-wrap:wrap;gap:20px;}
.fb-links a{color:var(--text-3);transition:color .16s ease;}
.fb-links a:hover{color:var(--primary);}

/* ============ 移动端固定下载条 ============ */
.mobile-dl-bar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:80;
  height:64px;
  padding:0 16px;
  align-items:center;justify-content:space-between;gap:12px;
  background:rgba(12,15,20,.96);
  backdrop-filter:blur(8px);
  border-top:1px solid var(--line);
}
.mobile-dl-bar span{font-size:14px;color:var(--text-2);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .page-hero h1{font-size:38px;}
  .footer-main{grid-template-columns:1.4fr 1fr 1fr;}
  .footer-col:last-child{grid-column:span 3;}
}
@media (max-width:1023px){
  .search{flex:0 1 240px;}
  .page-hero-inner{grid-template-columns:1fr;gap:var(--sp-4);}
  .hero-media img{aspect-ratio:16/9;}
  .feature-row{grid-template-columns:1fr;gap:var(--sp-3);}
  .feature-row.reverse .feature-media{order:0;}
  .compare-grid{grid-template-columns:1fr;}
  .dl-grid{grid-template-columns:repeat(2,1fr);}
  .dl-qr{grid-column:span 2;}
  .section{padding:var(--sp-6) 0;}
  .footer-main{grid-template-columns:1fr 1fr;gap:var(--sp-3);}
  .footer-col:last-child{grid-column:span 2;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .header-inner{min-height:64px;gap:12px;}
  .search{display:none;}
  .header-actions .ghost-link{display:none;}
  .menu-toggle{display:inline-flex;}
  .channelbar{position:static;backdrop-filter:none;background:var(--bg-0);}
  .channelbar-inner{
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    min-height:0;
    padding:8px 0 12px;
  }
  .channelbar.open .channelbar-inner{display:flex;}
  .channel{min-height:52px;border-radius:8px;padding:12px 16px;}
  .channel.active{background:rgba(33,230,166,.08);}
  .channel.active::after{left:0;right:auto;top:12px;bottom:12px;width:3px;height:auto;border-radius:0 3px 3px 0;}
  .page-hero h1{font-size:30px;}
  .page-hero{padding-bottom:var(--sp-5);}
  .section{padding:var(--sp-5) 0;}
  .section-head h2{font-size:25px;}
  .feature-text h3{font-size:20px;}
  .step{grid-template-columns:1fr;gap:var(--sp-2);}
  .step-no{width:44px;height:44px;font-size:17px;}
  .faq-q{padding:14px 16px;font-size:15px;}
  .faq-a p{padding:0 16px 18px;}
  .dl-grid{grid-template-columns:1fr;}
  .dl-qr{grid-column:span 1;flex-direction:column;align-items:flex-start;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-main{grid-template-columns:1fr;gap:var(--sp-3);}
  .footer-col:last-child{grid-column:span 1;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
  .mobile-dl-bar{display:flex;}
  body{padding-bottom:64px;}
}
@media (max-width:420px){
  .page-hero h1{font-size:26px;}
  .logo-text{font-size:17px;}
  .lead{font-size:15px;}
  .compare-card{padding:20px;}
  .badge{font-size:12px;}
}

/* roulang page: category4 */
:root{
  --bg-0:#0C0F14; --bg-1:#121722; --surface:#161C28; --surface-2:#1D2533; --line:#242D3E;
  --primary:#21E6A6; --primary-ink:#04231A; --primary-soft:rgba(33,230,166,.12);
  --accent:#FF5C8A; --amber:#FFB020; --danger:#FF5A5A; --success:#3ED598;
  --text-1:#EAF0F7; --text-2:#9AA7B8; --text-3:#6B7788;
  --r-card:16px; --r-img:20px; --r-btn:10px;
  --shadow-1:0 18px 40px -24px rgba(0,0,0,.9);
  --shadow-hover:0 0 0 1px rgba(33,230,166,.4),0 24px 60px -28px rgba(33,230,166,.35);
  --maxw:1200px;
  --sp-1:8px; --sp-2:16px; --sp-3:24px; --sp-4:32px; --sp-5:48px; --sp-6:64px; --sp-7:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px; line-height:1.8; color:var(--text-1);
  background:var(--bg-0);
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:""; position:fixed; inset:0; pointer-events:none; z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:32px 32px;
  opacity:.5;
}
img{max-width:100%; display:block; object-fit:cover}
a{color:inherit; text-decoration:none}
h1,h2,h3,h4{margin:0; line-height:1.25; font-weight:700; letter-spacing:.2px}
p{margin:0 0 var(--sp-2)}
ul{margin:0; padding:0; list-style:none}
button,input,textarea,select{font:inherit; color:inherit}
button{cursor:pointer; border:none; background:none}
:focus-visible{outline:2px solid var(--primary); outline-offset:2px; border-radius:4px}
.container{width:100%; max-width:var(--maxw); margin:0 auto; padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{position:relative; z-index:20; background:var(--bg-0)}
.brandbar{border-bottom:1px solid var(--line); background:linear-gradient(180deg,var(--bg-1),var(--bg-0))}
.brandbar-inner{display:flex; align-items:center; gap:var(--sp-3); height:72px}
.logo{display:flex; align-items:center; gap:10px; min-height:44px; flex:0 0 auto}
.logo-mark{
  width:38px; height:38px; border-radius:12px; display:grid; place-items:center;
  background:linear-gradient(140deg,var(--primary),#0f9d78); color:var(--primary-ink);
  font-size:14px; font-weight:800; letter-spacing:.5px;
  box-shadow:0 0 0 1px rgba(33,230,166,.5),0 10px 26px -14px rgba(33,230,166,.8);
}
.logo-text{font-size:19px; font-weight:700; letter-spacing:.3px}
.logo-text em{color:var(--primary); font-style:normal}
.brand-search{flex:1 1 auto; max-width:320px; position:relative; display:flex; align-items:center}
.brand-search svg{position:absolute; left:12px; width:18px; height:18px; stroke:var(--text-3); stroke-width:1.75; fill:none}
.brand-search input{
  width:100%; height:44px; padding:0 14px 0 40px; border-radius:var(--r-btn);
  background:var(--surface); border:1px solid var(--line); color:var(--text-1);
  transition:border-color .16s ease,box-shadow .16s ease;
}
.brand-search input::placeholder{color:var(--text-3)}
.brand-search input:focus{outline:none; border-color:var(--primary); box-shadow:0 0 0 4px rgba(33,230,166,.12)}
.brand-actions{margin-left:auto; display:flex; align-items:center; gap:var(--sp-2)}
.text-link{color:var(--text-2); font-size:14px; min-height:44px; display:inline-flex; align-items:center; transition:color .16s ease}
.text-link:hover{color:var(--primary)}
.menu-btn{
  display:none; width:44px; height:44px; border:1px solid var(--line); border-radius:var(--r-btn);
  align-items:center; justify-content:center;
}
.menu-btn svg{width:22px; height:22px; stroke:var(--text-1); stroke-width:1.75; fill:none}

.channelbar{border-bottom:1px solid var(--line); background:rgba(12,15,20,.92); backdrop-filter:blur(6px); position:sticky; top:0; z-index:30}
.channelbar-inner{display:flex; align-items:center; gap:8px; height:52px; overflow-x:auto; scrollbar-width:none}
.channelbar-inner::-webkit-scrollbar{display:none}
.channel{
  position:relative; flex:0 0 auto; display:inline-flex; align-items:center; height:44px;
  padding:0 20px; border-radius:8px; font-size:15px; color:var(--text-2);
  transition:background .16s ease,color .16s ease;
}
.channel:hover{background:rgba(33,230,166,.06); color:var(--text-1)}
.channel.active{color:var(--text-1); background:rgba(33,230,166,.08)}
.channel.active::after{
  content:""; position:absolute; left:20px; right:20px; bottom:2px; height:3px;
  border-radius:3px; background:var(--primary);
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:52px; padding:0 28px; border-radius:var(--r-btn);
  font-size:16px; font-weight:600; transition:all .18s ease; white-space:nowrap;
}
.btn svg{width:20px; height:20px; stroke-width:1.75; fill:none}
.btn-primary{background:var(--primary); color:var(--primary-ink); box-shadow:0 12px 30px -18px rgba(33,230,166,.9)}
.btn-primary:hover{filter:brightness(1.06); transform:translateY(-2px); box-shadow:0 0 0 1px rgba(33,230,166,.5),0 24px 60px -28px rgba(33,230,166,.55)}
.btn-primary:active{transform:translateY(0); filter:brightness(.96)}
.btn-ghost{background:transparent; border:1px solid var(--line); color:var(--text-1)}
.btn-ghost:hover{border-color:rgba(33,230,166,.4); color:var(--primary); transform:translateY(-2px)}
.btn-sm{height:44px; padding:0 20px; font-size:15px}

.badge{
  display:inline-flex; align-items:center; gap:6px; height:28px; padding:0 12px;
  border-radius:999px; border:1px solid var(--line); background:var(--surface);
  font-size:13px; color:var(--text-2);
}
.badge-primary{border-color:rgba(33,230,166,.45); color:var(--primary); background:var(--primary-soft)}
.badge-amber{border-color:rgba(255,176,32,.45); color:var(--amber); background:rgba(255,176,32,.1)}
.badge-accent{border-color:rgba(255,92,138,.4); color:var(--accent); background:rgba(255,92,138,.1)}

/* ---------- breadcrumb ---------- */
.crumbs{display:flex; flex-wrap:wrap; align-items:center; gap:8px; font-size:13px; color:var(--text-3); margin-bottom:var(--sp-2)}
.crumbs a{color:var(--text-3); transition:color .16s ease}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:var(--line)}
.crumbs .current{color:var(--primary)}

/* ---------- page hero ---------- */
.page-hero{padding:var(--sp-5) 0 var(--sp-4); border-bottom:1px solid var(--line)}
.page-hero-inner{display:grid; grid-template-columns:1.15fr .85fr; gap:var(--sp-4); align-items:center}
.page-hero h1{font-size:40px; line-height:1.2; margin:var(--sp-2) 0}
.page-hero h1 .hl{color:var(--primary)}
.page-hero .lead{font-size:16px; color:var(--text-2); max-width:56ch}
.hero-points{display:flex; flex-wrap:wrap; gap:8px; margin-top:var(--sp-2)}
.hero-figure{
  position:relative; border:1px solid var(--line); border-radius:var(--r-img); overflow:hidden;
  background:var(--surface); box-shadow:var(--shadow-1); aspect-ratio:16/10;
}
.hero-figure img{width:100%; height:100%}
.hero-figure::after{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:linear-gradient(200deg,rgba(33,230,166,.16),transparent 55%);
}
.hero-floater{
  position:absolute; left:-14px; bottom:-14px; z-index:2;
  background:var(--surface-2); border:1px solid rgba(33,230,166,.35);
  border-radius:12px; padding:10px 14px; font-size:13px; color:var(--text-2);
  box-shadow:0 0 0 1px rgba(33,230,166,.12),0 20px 50px -30px rgba(33,230,166,.7);
}

/* ---------- sections ---------- */
.section{padding:var(--sp-6) 0}
.section-head{display:flex; align-items:flex-end; justify-content:space-between; gap:var(--sp-3); margin-bottom:var(--sp-4)}
.section-head h2{font-size:32px}
.section-head .sub{color:var(--text-2); font-size:15px; margin-top:8px; max-width:60ch}
.eyebrow{display:inline-flex; align-items:center; gap:8px; font-size:13px; color:var(--primary); letter-spacing:.6px}
.eyebrow::before{content:""; width:16px; height:2px; background:var(--primary); border-radius:2px}
.arrow-link{display:inline-flex; align-items:center; gap:6px; color:var(--primary); font-size:15px; font-weight:600; min-height:44px}
.arrow-link svg{width:18px; height:18px; stroke:currentColor; stroke-width:1.75; fill:none; transition:transform .18s ease}
.arrow-link:hover svg{transform:translateX(4px)}

/* ---------- search / locator cards ---------- */
.locate-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:var(--sp-3)}
.locate-card{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--r-card);
  padding:var(--sp-3); box-shadow:var(--shadow-1); transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.locate-card:hover{border-color:rgba(33,230,166,.4); transform:translateY(-3px); box-shadow:var(--shadow-hover)}
.locate-icon{
  width:44px; height:44px; border-radius:12px; display:grid; place-items:center;
  background:var(--primary-soft); margin-bottom:var(--sp-2);
}
.locate-icon svg{width:22px; height:22px; stroke:var(--primary); stroke-width:1.75; fill:none}
.locate-card h3{font-size:19px; margin-bottom:8px}
.locate-card p{font-size:15px; color:var(--text-2); margin-bottom:var(--sp-2)}
.locate-tags{display:flex; flex-wrap:wrap; gap:6px}
.locate-tags span{font-size:12px; color:var(--text-3); border:1px solid var(--line); border-radius:999px; padding:3px 10px}

/* ---------- issue columns (steps) ---------- */
.issue-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:var(--sp-3)}
.issue-col{
  background:linear-gradient(180deg,var(--surface),var(--bg-1));
  border:1px solid var(--line); border-radius:var(--r-card); padding:var(--sp-3);
}
.issue-col h3{font-size:20px; display:flex; align-items:center; gap:10px; margin-bottom:var(--sp-2)}
.dot{width:8px; height:8px; border-radius:2px; background:var(--primary); flex:0 0 auto}
.steps{counter-reset:step; display:grid; gap:14px}
.steps li{position:relative; padding-left:36px; font-size:15px; color:var(--text-2)}
.steps li::before{
  counter-increment:step; content:counter(step,decimal-leading-zero);
  position:absolute; left:0; top:2px; width:24px; height:24px; border-radius:8px;
  display:grid; place-items:center; font-size:12px; color:var(--primary);
  background:var(--primary-soft); border:1px solid rgba(33,230,166,.28);
  font-variant-numeric:tabular-nums;
}
.issue-note{
  margin-top:var(--sp-2); padding-top:var(--sp-2); border-top:1px dashed var(--line);
  font-size:13px; color:var(--text-3);
}

/* ---------- form ---------- */
.form-wrap{display:grid; grid-template-columns:1.2fr .8fr; gap:var(--sp-3); align-items:start}
.form-card{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--r-card);
  padding:var(--sp-4); box-shadow:var(--shadow-1);
}
.field{margin-bottom:var(--sp-3)}
.field label{display:block; font-size:13px; color:var(--text-2); margin-bottom:8px}
.field input,.field textarea,.field select{
  width:100%; border-radius:var(--r-btn); border:1px solid var(--line);
  background:var(--bg-1); color:var(--text-1); padding:0 14px; height:48px;
  transition:border-color .16s ease,box-shadow .16s ease;
}
.field textarea{height:auto; min-height:128px; padding:12px 14px; line-height:1.7; resize:vertical}
.field select{appearance:none; background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%); background-position:calc(100% - 20px) 22px,calc(100% - 14px) 22px; background-size:6px 6px,6px 6px; background-repeat:no-repeat}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field textarea:focus,.field select:focus{outline:none; border-color:var(--primary); box-shadow:0 0 0 4px rgba(33,230,166,.12)}
.field.error input,.field.error textarea{border-color:var(--danger)}
.field .hint{font-size:13px; color:var(--text-3); margin-top:6px}
.field.error .hint{color:var(--danger)}
.form-row{display:grid; grid-template-columns:1fr 1fr; gap:var(--sp-2)}
.form-actions{display:flex; align-items:center; gap:var(--sp-2); flex-wrap:wrap}
.aside-card{
  background:linear-gradient(180deg,var(--surface-2),var(--bg-1));
  border:1px solid var(--line); border-radius:var(--r-card); padding:var(--sp-3);
}
.aside-card h3{font-size:19px; margin-bottom:var(--sp-2)}
.aside-list{display:grid; gap:12px}
.aside-list li{display:flex; gap:10px; font-size:15px; color:var(--text-2)}
.aside-list svg{width:20px; height:20px; flex:0 0 auto; margin-top:3px; stroke:var(--primary); stroke-width:1.75; fill:none}
.aside-meta{margin-top:var(--sp-3); padding-top:var(--sp-2); border-top:1px solid var(--line); font-size:13px; color:var(--text-3); display:grid; gap:6px}

/* ---------- FAQ ---------- */
.faq-list{border:1px solid var(--line); border-radius:var(--r-card); overflow:hidden; background:var(--surface)}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%; display:flex; align-items:center; justify-content:space-between; gap:var(--sp-2);
  padding:0 var(--sp-3); min-height:56px; text-align:left; font-size:16px; font-weight:600;
  color:var(--text-1); transition:background .16s ease;
}
.faq-q:hover{background:rgba(33,230,166,.05)}
.faq-icon{flex:0 0 auto; width:22px; height:22px; position:relative}
.faq-icon::before,.faq-icon::after{
  content:""; position:absolute; background:var(--primary); border-radius:2px; transition:transform .22s ease,opacity .22s ease;
}
.faq-icon::before{left:0; right:0; top:10px; height:2px}
.faq-icon::after{top:0; bottom:0; left:10px; width:2px}
.faq-item.open .faq-icon::after{transform:rotate(45deg); opacity:0}
.faq-item.open .faq-icon::before{transform:rotate(45deg)}
.faq-a{max-height:0; overflow:hidden; transition:max-height .3s ease}
.faq-a p{padding:0 var(--sp-3) var(--sp-3); color:var(--text-2); font-size:15px; margin:0; max-width:88ch}
.faq-item.open .faq-a{max-height:340px}

/* ---------- download ---------- */
.dl-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:var(--sp-2)}
.dl-card{
  display:flex; align-items:center; gap:12px; padding:18px; border-radius:var(--r-card);
  border:1px solid var(--line); background:var(--surface); min-height:84px;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.dl-card:hover{border-color:rgba(33,230,166,.4); transform:translateY(-3px); box-shadow:var(--shadow-hover)}
.dl-card svg{width:24px; height:24px; stroke:var(--primary); stroke-width:1.75; fill:none; flex:0 0 auto}
.dl-card strong{display:block; font-size:16px}
.dl-card span{font-size:13px; color:var(--text-3)}
.dl-card.is-primary{background:var(--primary); border-color:transparent; color:var(--primary-ink)}
.dl-card.is-primary svg{stroke:var(--primary-ink)}
.dl-card.is-primary span{color:rgba(4,35,26,.72)}

/* ---------- CTA band ---------- */
.cta-band{
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
  background:linear-gradient(90deg,rgba(33,230,166,.08),rgba(33,230,166,0) 70%);
}
.cta-inner{display:flex; align-items:center; justify-content:space-between; gap:var(--sp-3); padding:var(--sp-4) 0}
.cta-inner h2{font-size:28px}
.cta-inner p{margin:8px 0 0; color:var(--text-2); font-size:15px}
.cta-actions{display:flex; gap:12px; flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-1); border-top:1px solid var(--line); padding-top:var(--sp-5); position:relative; z-index:1}
.footer-main{display:grid; grid-template-columns:1.5fr 1fr 1fr 1fr; gap:var(--sp-4); padding-bottom:var(--sp-4)}
.footer-brand p{color:var(--text-2); font-size:14px; margin-top:var(--sp-2); max-width:42ch}
.footer-contact{display:grid; gap:6px; margin-top:var(--sp-2); font-size:13px; color:var(--text-3)}
.footer-col h4{font-size:15px; margin-bottom:var(--sp-2); color:var(--text-1)}
.footer-col ul{display:grid; gap:10px}
.footer-col a{color:var(--text-2); font-size:14px; transition:color .16s ease}
.footer-col a:hover{color:var(--primary)}
.footer-tags{display:flex; gap:8px; margin-top:var(--sp-2); flex-wrap:wrap}
.footer-bottom{
  border-top:1px solid var(--line); padding:var(--sp-3) 0;
  display:flex; align-items:center; justify-content:space-between; gap:var(--sp-2);
  font-size:13px; color:var(--text-3); flex-wrap:wrap;
}
.fb-links{display:flex; gap:var(--sp-2); flex-wrap:wrap}
.fb-links a{color:var(--text-3); transition:color .16s ease}
.fb-links a:hover{color:var(--primary)}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .page-hero h1{font-size:36px}
  .locate-grid,.issue-grid{grid-template-columns:repeat(2,1fr)}
  .footer-main{grid-template-columns:1.2fr 1fr 1fr}
}
@media (max-width:1023px){
  .brand-search{display:none}
  .menu-btn{display:inline-flex}
  .channelbar{position:static}
  .channelbar-inner{height:auto; flex-direction:column; align-items:stretch; padding:8px 24px 16px; display:none}
  .channelbar.open .channelbar-inner{display:flex}
  .channel{height:52px; border-radius:8px; padding:0 16px}
  .channel.active::after{left:0; right:auto; top:14px; bottom:14px; width:3px; height:auto}
  .page-hero-inner{grid-template-columns:1fr; gap:var(--sp-3)}
  .form-wrap{grid-template-columns:1fr}
  .dl-grid{grid-template-columns:repeat(2,1fr)}
  .section{padding:var(--sp-5) 0}
  .section-head{flex-direction:column; align-items:flex-start}
  .cta-inner{flex-direction:column; align-items:flex-start}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .page-hero{padding:var(--sp-4) 0}
  .page-hero h1{font-size:30px}
  .section-head h2{font-size:26px}
  .locate-grid,.issue-grid,.form-row{grid-template-columns:1fr}
  .dl-grid{grid-template-columns:1fr}
  .btn{width:100%}
  .cta-actions{width:100%}
  .footer-main{grid-template-columns:1fr 1fr; gap:var(--sp-3)}
  .footer-brand{grid-column:1 / -1}
  .footer-bottom{flex-direction:column; align-items:flex-start}
}
@media (max-width:420px){
  .page-hero h1{font-size:26px}
  .logo-text{font-size:17px}
  .cta-inner h2{font-size:22px}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --bg-0:#0C0F14;
  --bg-1:#121722;
  --surface:#161C28;
  --surface-2:#1D2533;
  --line:#242D3E;
  --primary:#21E6A6;
  --primary-ink:#04231A;
  --primary-soft:rgba(33,230,166,.12);
  --primary-line:rgba(33,230,166,.4);
  --accent:#FF5C8A;
  --amber:#FFB020;
  --danger:#FF5A5A;
  --success:#3ED598;
  --text-1:#EAF0F7;
  --text-2:#9AA7B8;
  --text-3:#6B7788;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.9);
  --shadow-hi:0 0 0 1px rgba(33,230,166,.4),0 24px 60px -28px rgba(33,230,166,.35);
  --ease:160ms cubic-bezier(.4,0,.2,1);
  --max:1200px;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,li,figure,blockquote{margin:0;padding:0;}
ul,ol{list-style:none;}
a{color:var(--primary);text-decoration:none;transition:color var(--ease),border-color var(--ease),opacity var(--ease);}
a:hover{color:var(--primary);}
img{max-width:100%;display:block;border-style:none;}
button,input{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
svg{display:block;flex:none;}
:focus{outline:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(33,230,166,.28);color:#fff;}

/* ============ 容器与通用 ============ */
.container{
  width:100%;
  max-width:var(--max);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:96px 0;position:relative;}
.section--tight{padding:64px 0;}
.section-head{max-width:780px;margin-bottom:32px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--primary);
  text-transform:uppercase;
  margin-bottom:16px;
}
.eyebrow::before{
  content:"";width:6px;height:6px;border-radius:2px;background:var(--primary);
  box-shadow:0 0 12px rgba(33,230,166,.7);
}
h2.section-title{
  font-size:32px;line-height:1.25;font-weight:700;letter-spacing:-.01em;
  margin-bottom:16px;
}
.section-desc{color:var(--text-2);font-size:16px;line-height:1.85;max-width:720px;}
.grid{display:grid;gap:24px;}
.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  border:1px solid var(--line);
  background:var(--surface-2);
  color:var(--text-2);
  font-size:13px;line-height:1;font-weight:500;
  font-variant-numeric:tabular-nums;
  white-space:nowrap;
}
.badge-primary{border-color:var(--primary-line);background:var(--primary-soft);color:var(--primary);}
.badge-amber{border-color:rgba(255,176,32,.36);background:rgba(255,176,32,.12);color:var(--amber);}
.badge-accent{border-color:rgba(255,92,138,.36);background:rgba(255,92,138,.12);color:var(--accent);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:52px;padding:0 28px;border-radius:var(--r-sm);
  font-size:16px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;
  transition:transform var(--ease),background-color var(--ease),border-color var(--ease),box-shadow var(--ease),color var(--ease),filter var(--ease);
  white-space:nowrap;cursor:pointer;
}
.btn-primary{background:var(--primary);color:var(--primary-ink);box-shadow:0 12px 30px -18px rgba(33,230,166,.9);}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 20px 44px -20px rgba(33,230,166,.75);color:var(--primary-ink);}
.btn-primary:active{transform:translateY(0);filter:brightness(.96);}
.btn-ghost{background:transparent;color:var(--text-1);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--primary-line);color:var(--primary);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{min-height:44px;padding:0 20px;font-size:15px;}
.btn-block{width:100%;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--primary);
  min-height:44px;
}
.text-link svg{transition:transform var(--ease);}
.text-link:hover svg{transform:translateX(4px);}
.text-link:hover{text-decoration:underline;text-underline-offset:4px;}
.text-muted-link{color:var(--text-2);font-size:14px;min-height:44px;display:inline-flex;align-items:center;}
.text-muted-link:hover{color:var(--primary);}

/* ============ 顶部品牌行 ============ */
.site-header{position:relative;z-index:60;background:var(--bg-0);}
.brandbar{
  display:flex;align-items:center;gap:24px;
  height:72px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none;}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:9px;
  background:linear-gradient(150deg,#21E6A6,#12A87A);
  color:#04231A;font-size:14px;font-weight:800;letter-spacing:.02em;
  box-shadow:0 8px 20px -10px rgba(33,230,166,.9);
}
.logo-text{font-size:19px;font-weight:700;color:var(--text-1);letter-spacing:.01em;}
.logo-text em{font-style:normal;color:var(--primary);}
.brandbar-search{
  position:relative;flex:1;max-width:320px;margin-left:8px;
  display:flex;align-items:center;
}
.brandbar-search svg{position:absolute;left:14px;color:var(--text-3);}
.brandbar-search input{
  width:100%;height:44px;padding:0 16px 0 42px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--text-1);
  font-size:14px;
  transition:border-color var(--ease),box-shadow var(--ease),background-color var(--ease);
}
.brandbar-search input::placeholder{color:var(--text-3);}
.brandbar-search input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(33,230,166,.12);background:var(--surface-2);}
.brandbar-actions{display:flex;align-items:center;gap:20px;margin-left:auto;}
.menu-btn{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:var(--surface);
  align-items:center;justify-content:center;color:var(--text-1);
}
.menu-btn:hover{border-color:var(--primary-line);color:var(--primary);}

/* ============ 频道行 ============ */
.channelbar{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.channelbar-inner{
  display:flex;align-items:center;gap:8px;
  height:52px;overflow-x:auto;scrollbar-width:none;
}
.channelbar-inner::-webkit-scrollbar{display:none;}
.channel{
  position:relative;
  display:inline-flex;align-items:center;
  padding:0 20px;height:38px;
  border-radius:8px;
  color:var(--text-2);font-size:15px;font-weight:500;
  white-space:nowrap;
  transition:background-color var(--ease),color var(--ease);
}
.channel:hover{background:rgba(33,230,166,.06);color:var(--text-1);}
.channel.active{background:rgba(33,230,166,.08);color:var(--primary);font-weight:600;box-shadow:inset 0 -3px 0 var(--primary);}

/* ============ 小首屏 ============ */
.subhero{
  position:relative;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(100deg,rgba(12,15,20,.94) 0%,rgba(12,15,20,.82) 52%,rgba(12,15,20,.55) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
}
.subhero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:32px 32px;
  opacity:.6;
}
.subhero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:48px;align-items:center;
  padding:56px 0;
}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--text-2);margin-bottom:20px;
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:var(--text-3);}
.breadcrumb .current{color:var(--primary);font-weight:600;}
.subhero h1{
  font-size:44px;line-height:1.15;font-weight:700;letter-spacing:-.015em;
  margin-bottom:18px;
}
.subhero h1 span{color:var(--primary);}
.subhero-lead{
  font-size:16px;line-height:1.9;color:var(--text-2);max-width:560px;
}
.subhero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.subhero-media{position:relative;}
.subhero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.subhero-media::before{
  content:"";position:absolute;inset:-14px -14px 26px 30px;
  border-radius:var(--r-lg);
  border:1px solid rgba(33,230,166,.28);
  pointer-events:none;
}

/* ============ 时间线 ============ */
.timeline{position:relative;margin-top:8px;padding-left:36px;}
.timeline::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,rgba(33,230,166,.75),rgba(33,230,166,.08));
  border-radius:2px;
}
.tl-item{position:relative;margin-bottom:24px;}
.tl-item:last-child{margin-bottom:0;}
.tl-dot{
  position:absolute;left:-36px;top:26px;
  width:20px;height:20px;border-radius:50%;
  background:var(--bg-0);
  border:2px solid var(--primary);
  box-shadow:0 0 0 5px rgba(33,230,166,.1);
}
.tl-item--past .tl-dot{border-color:var(--text-3);box-shadow:none;}
.tl-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:24px 26px;
  box-shadow:var(--shadow);
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.tl-card:hover{border-color:var(--primary-line);box-shadow:var(--shadow-hi);transform:translateY(-2px);}
.tl-top{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-bottom:14px;}
.tl-version{
  font-size:22px;font-weight:700;color:var(--text-1);
  font-variant-numeric:tabular-nums;letter-spacing:.01em;
}
.tl-date{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.tl-card h3{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:12px;color:var(--text-1);}
.tl-list{display:grid;gap:10px;}
.tl-list li{
  position:relative;padding-left:20px;
  font-size:15px;line-height:1.8;color:var(--text-2);
}
.tl-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:6px;height:6px;border-radius:2px;background:var(--primary);
}

/* ============ 更新要点卡 ============ */
.spot-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.spot-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:26px;
  box-shadow:var(--shadow);
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.spot-card:hover{border-color:var(--primary-line);box-shadow:var(--shadow-hi);transform:translateY(-2px);}
.spot-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  background:var(--primary-soft);color:var(--primary);
  border:1px solid rgba(33,230,166,.22);
  margin-bottom:18px;
}
.spot-card h3{font-size:20px;font-weight:600;line-height:1.4;margin-bottom:10px;}
.spot-card p{font-size:15px;line-height:1.85;color:var(--text-2);}
.spot-meta{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ============ 版本对照表 ============ */
.table-wrap{
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  background:var(--surface);
  box-shadow:var(--shadow);
}
table.cmp{width:100%;border-collapse:collapse;font-size:15px;}
table.cmp caption{
  text-align:left;padding:20px 24px 16px;
  font-size:13px;color:var(--text-3);letter-spacing:.02em;
}
table.cmp th,table.cmp td{
  padding:0 24px;height:52px;text-align:left;
  border-bottom:1px solid var(--line);
  vertical-align:middle;
}
table.cmp thead th{
  font-size:13px;font-weight:600;color:var(--text-3);
  background:var(--surface-2);height:48px;
  white-space:nowrap;
}
table.cmp tbody tr:nth-child(even){background:rgba(255,255,255,.015);}
table.cmp tbody tr:last-child td{border-bottom:0;}
table.cmp td:first-child{color:var(--text-1);font-weight:600;}
table.cmp td{color:var(--text-2);font-variant-numeric:tabular-nums;}
table.cmp .ver{color:var(--primary);font-weight:600;}

/* ============ 规格卡（升级前准备） ============ */
.spec-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.spec-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:22px;
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.spec-card:hover{border-color:var(--primary-line);box-shadow:var(--shadow-hi);transform:translateY(-2px);}
.spec-label{font-size:13px;color:var(--text-3);margin-bottom:10px;letter-spacing:.02em;}
.spec-value{font-size:17px;font-weight:600;color:var(--text-1);line-height:1.5;font-variant-numeric:tabular-nums;}
.spec-note{font-size:13px;color:var(--text-3);margin-top:10px;line-height:1.7;}

/* ============ 步骤列表 ============ */
.steps{display:grid;gap:18px;counter-reset:step;}
.step{
  display:grid;grid-template-columns:56px minmax(0,1fr);
  gap:20px;align-items:start;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:24px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.step:hover{border-color:var(--primary-line);box-shadow:var(--shadow-hi);}
.step-num{
  display:flex;align-items:center;justify-content:center;
  width:48px;height:48px;border-radius:14px;
  background:var(--surface-2);border:1px solid var(--line);
  color:var(--primary);font-weight:700;font-size:18px;
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.step p{font-size:15px;line-height:1.85;color:var(--text-2);}

/* ============ 问答 + 检索卡 ============ */
.qa-layout{display:grid;grid-template-columns:minmax(0,320px) minmax(0,1fr);gap:32px;align-items:start;}
.search-card{
  position:sticky;top:24px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:24px;
  box-shadow:var(--shadow);
}
.search-card h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.search-card p{font-size:14px;color:var(--text-2);line-height:1.8;margin-bottom:18px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--text-3);margin-bottom:8px;}
.field input,.field select{
  width:100%;height:48px;padding:0 14px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:var(--bg-1);
  color:var(--text-1);font-size:15px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field input::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(33,230,166,.12);}
.field-note{font-size:13px;color:var(--text-3);line-height:1.7;margin-top:12px;}
.qa-list{display:grid;gap:12px;}
.qa-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:22px 24px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.qa-item:hover{border-color:var(--primary-line);box-shadow:var(--shadow-hi);}
.qa-item h3{
  font-size:17px;font-weight:600;margin-bottom:10px;
  display:flex;align-items:flex-start;gap:10px;
}
.qa-tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;background:var(--primary-soft);color:var(--primary);
  font-size:12px;font-weight:600;flex:none;margin-top:3px;
}
.qa-item p{font-size:15px;line-height:1.85;color:var(--text-2);}

/* ============ FAQ 手风琴 ============ */
.faq{display:grid;gap:12px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item.open{border-color:var(--primary-line);box-shadow:var(--shadow-hi);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:0 24px;text-align:left;
  font-size:16px;font-weight:600;color:var(--text-1);
  transition:color var(--ease);
}
.faq-q:hover{color:var(--primary);}
.faq-icon{
  position:relative;width:20px;height:20px;flex:none;
  transition:transform var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
}
.faq-icon::before{left:0;top:9px;width:20px;height:2px;}
.faq-icon::after{left:9px;top:0;width:2px;height:20px;}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 260ms cubic-bezier(.4,0,.2,1);
}
.faq-a p{
  padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--text-2);
  max-width:800px;
}

/* ============ 下载按钮组 ============ */
.download-band{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(33,230,166,.06),rgba(12,15,20,0));
}
.dl-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;}
.dl-btn{
  display:flex;align-items:center;gap:14px;
  padding:18px 20px;min-height:80px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--text-1);
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease),background-color var(--ease);
}
.dl-btn:hover{border-color:var(--primary-line);box-shadow:var(--shadow-hi);transform:translateY(-2px);color:var(--text-1);}
.dl-btn .dl-ico{
  display:flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;flex:none;
  background:var(--surface-2);border:1px solid var(--line);color:var(--primary);
}
.dl-text{display:flex;flex-direction:column;gap:2px;min-width:0;}
.dl-title{font-size:16px;font-weight:600;}
.dl-sub{font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.dl-primary{
  background:var(--primary);border-color:var(--primary);color:var(--primary-ink);
  box-shadow:0 14px 34px -20px rgba(33,230,166,.95);
}
.dl-primary:hover{color:var(--primary-ink);filter:brightness(1.05);}
.dl-primary .dl-ico{background:rgba(4,35,26,.14);border-color:rgba(4,35,26,.2);color:var(--primary-ink);}
.dl-primary .dl-sub{color:rgba(4,35,26,.72);}

/* ============ 底部 CTA ============ */
.cta-band{
  background:linear-gradient(180deg,rgba(33,230,166,.08),rgba(12,15,20,0));
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:56px 0;
}
.cta-inner h2{font-size:28px;font-weight:700;line-height:1.3;margin-bottom:8px;}
.cta-inner p{font-size:15px;color:var(--text-2);}
.cta-actions{display:flex;gap:14px;flex:none;}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding-top:64px;}
.footer-main{
  display:grid;grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr));
  gap:40px;padding-bottom:48px;
}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--text-2);margin:18px 0;}
.footer-contact{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--text-3);}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text-1);margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{font-size:14px;color:var(--text-2);min-height:44px;display:inline-flex;align-items:center;}
.footer-col ul a:hover{color:var(--primary);}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);flex-wrap:wrap;
}
.fb-links{display:flex;gap:20px;flex-wrap:wrap;}
.fb-links a{font-size:13px;color:var(--text-3);}
.fb-links a:hover{color:var(--primary);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .subhero h1{font-size:40px;}
  .spec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .dl-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:1023px){
  .section{padding:64px 0;}
  .brandbar-search{display:none;}
  .subhero-inner{grid-template-columns:1fr;gap:32px;padding:48px 0;}
  .subhero-media::before{inset:-10px -10px 18px 18px;}
  .qa-layout{grid-template-columns:1fr;}
  .search-card{position:static;}
  .footer-main{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .brandbar{height:64px;gap:12px;}
  .brandbar-actions .text-link{display:none;}
  .menu-btn{display:inline-flex;}
  .channelbar-inner{
    display:none;height:auto;flex-direction:column;align-items:stretch;
    gap:0;padding:8px 0;
  }
  .channelbar.open .channelbar-inner{display:flex;}
  .channel{
    height:52px;border-radius:0;padding:0 16px;
    border-left:3px solid transparent;
  }
  .channel.active{box-shadow:none;border-left-color:var(--primary);}
  .subhero h1{font-size:30px;}
  .subhero-lead{font-size:15px;}
  .section-title{font-size:26px;}
  .grid,.spot-grid,.spec-grid,.dl-grid,.steps{grid-template-columns:1fr;}
  .timeline{padding-left:30px;}
  .tl-dot{left:-30px;width:18px;height:18px;}
  .tl-card{padding:20px;}
  .step{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:20px;}
  .step-num{width:40px;height:40px;font-size:16px;border-radius:12px;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:40px 0;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-main{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .table-wrap{overflow-x:auto;}
  table.cmp{min-width:560px;}
}
@media (max-width:420px){
  .subhero h1{font-size:30px;}
  .logo-text{font-size:17px;}
  .btn{font-size:15px;padding:0 20px;}
}