/* roulang page: index */
:root{
  --brand:#0F3D30;
  --brand-deep:#0A2A21;
  --brand-soft:rgba(15,61,48,.08);
  --accent:#D8F24B;
  --accent-ink:#0A2A21;
  --orange:#FF5A36;
  --bg:#F7F6F1;
  --white:#FFFFFF;
  --ink:#12181A;
  --ink-2:#5A6663;
  --ink-rev:#F2F4EF;
  --line:#E3E3DC;
  --line-rev:rgba(255,255,255,.12);
  --r-card:14px;
  --r-input:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,43,34,.06), 0 12px 32px -14px rgba(11,43,34,.16);
  --sh-2:0 18px 40px -16px rgba(11,43,34,.26);
  --max:1200px;
  --gutter:24px;
  --sec:110px;
  --f: "Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--f);
  font-size:17px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,border-color .18s ease}
a:hover{color:var(--brand-deep)}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.18;color:var(--ink)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
input,select,textarea{font-family:inherit;font-size:16px}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}
@media (min-width:1440px){:root{--max:1280px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:11px 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;line-height:1.2;border:1px solid transparent;
  cursor:pointer;text-align:center;transition:all .18s ease;white-space:nowrap;
}
.btn .arw{transition:transform .18s ease}
.btn:hover .arw{transform:translateX(4px)}
.btn-primary{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn-primary:hover{background:#0c3227;color:#fff;transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn-accent{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn-accent:hover{background:#c9e63c;color:var(--accent-ink);transform:translateY(-2px);box-shadow:0 16px 34px -14px rgba(11,43,34,.4)}
.btn-ghost{background:transparent;color:var(--brand);border-color:rgba(15,61,48,.35)}
.btn-ghost:hover{background:var(--brand);color:#fff;border-color:var(--brand);transform:translateY(-2px)}
.btn-ghost-rev{background:transparent;color:var(--ink-rev);border-color:rgba(255,255,255,.42)}
.btn-ghost-rev:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.7);transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-block{width:100%}
.btn-sm{min-height:40px;padding:8px 18px;font-size:14px}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;background:rgba(247,246,241,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(140%) blur(8px);
  -webkit-backdrop-filter:saturate(140%) blur(8px);
  transition:height .22s ease, box-shadow .22s ease, background .22s ease;
}
.site-header::before{content:"";position:absolute;inset:0;background:var(--brand);opacity:0;transition:opacity .22s ease;pointer-events:none}
.site-header.is-scrolled{box-shadow:0 10px 28px -20px rgba(11,43,34,.45)}
.nav-wrap{
  display:flex;align-items:center;gap:18px;
  height:76px;transition:height .22s ease;
}
.site-header.is-scrolled .nav-wrap{height:64px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink)}
.logo-mark{
  width:38px;height:38px;border-radius:11px;background:var(--brand);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
  color:var(--accent);font-weight:900;font-size:17px;letter-spacing:-.5px;
}
.logo-text{display:flex;flex-direction:column;line-height:1.05}
.logo-text b{font-size:17px;font-weight:900;letter-spacing:-.02em;color:var(--ink)}
.logo-text span{font-size:10px;letter-spacing:.16em;color:var(--ink-2);text-transform:uppercase;font-weight:600}
.logo:hover .logo-mark{background:var(--brand-deep)}

.nav-search{
  flex:1 1 auto;max-width:420px;position:relative;display:flex;align-items:center;
}
.nav-search svg{position:absolute;left:14px;width:17px;height:17px;color:var(--ink-2);pointer-events:none}
.nav-search input{
  width:100%;height:46px;border:1px solid var(--line);border-radius:var(--r-pill);
  background:var(--white);padding:0 108px 0 42px;color:var(--ink);
  transition:border-color .2s ease, box-shadow .2s ease;
}
.nav-search input::placeholder{color:#93a09b}
.nav-search input:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(216,242,75,.5);
}
.nav-search button{
  position:absolute;right:5px;top:50%;transform:translateY(-50%);
  height:36px;padding:0 16px;border:0;border-radius:var(--r-pill);
  background:var(--brand);color:#fff;font-size:14px;font-weight:700;cursor:pointer;
  transition:background .18s ease;
}
.nav-search button:hover{background:var(--brand-deep)}

.nav-links{display:flex;align-items:center;gap:4px;flex:1 1 auto;overflow-x:auto;scrollbar-width:none}
.nav-links::-webkit-scrollbar{display:none}
.nav-links a{
  font-size:13.5px;font-weight:600;color:var(--ink-2);padding:8px 11px;border-radius:8px;
  white-space:nowrap;border-bottom:2px solid transparent;
}
.nav-links a:hover{color:var(--brand);background:var(--brand-soft)}
.nav-links a.active{color:var(--brand);background:var(--brand-soft);border-bottom-color:var(--accent)}
.nav-cta{flex:0 0 auto}

.nav-burger{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:var(--white);color:var(--brand);font-size:18px;cursor:pointer;
  align-items:center;justify-content:center;
}
.mobile-bar{display:none}

/* 抽屉 */
.drawer{
  position:fixed;inset:0 0 0 auto;width:min(360px,86vw);background:var(--white);
  z-index:120;transform:translateX(102%);transition:transform .26s ease;
  padding:22px 22px 34px;overflow-y:auto;box-shadow:-20px 0 50px -30px rgba(0,0,0,.5);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:var(--white);color:var(--ink);font-size:17px;cursor:pointer}
.drawer nav a{
  display:block;padding:14px 12px;border-radius:12px;font-size:16px;font-weight:600;
  color:var(--ink);border-bottom:1px solid var(--line);
}
.drawer nav a:last-child{border-bottom:0}
.drawer nav a:hover,.drawer nav a.active{background:var(--brand-soft);color:var(--brand)}
.drawer .btn{margin-top:22px}
.scrim{
  position:fixed;inset:0;background:rgba(10,42,33,.5);z-index:110;opacity:0;visibility:hidden;
  transition:opacity .26s ease,visibility .26s ease;
}
.scrim.is-open{opacity:1;visibility:visible}

/* ---------- Hero ---------- */
.hero{
  position:relative;color:var(--ink-rev);overflow:hidden;
  background:
    linear-gradient(104deg, rgba(10,42,33,.94) 0%, rgba(10,42,33,.86) 42%, rgba(15,61,48,.6) 72%, rgba(15,61,48,.42) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.09;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:56px 56px;
}
.hero-inner{position:relative;z-index:2;padding:92px 0 84px}
.hero-grid{display:flex;align-items:center;gap:48px}
.hero-copy{flex:1 1 58%;min-width:0}
.hero-tag{
  display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:var(--r-pill);
  background:rgba(216,242,75,.14);border:1px solid rgba(216,242,75,.4);
  color:var(--accent);font-size:13px;font-weight:700;letter-spacing:.04em;margin-bottom:22px;
}
.hero-tag i{width:7px;height:7px;border-radius:50%;background:var(--accent);display:block}
.hero h1{
  color:#fff;font-size:clamp(38px,6vw,70px);font-weight:900;line-height:1.06;
  letter-spacing:-.03em;margin-bottom:20px;
}
.hero h1 em{font-style:normal;color:var(--accent);display:block}
.hero-lead{
  max-width:560px;font-size:17.5px;line-height:1.72;color:rgba(242,244,239,.86);margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px}
.hero-points{
  display:grid;grid-template-columns:repeat(3,1fr);gap:22px;
  padding-top:28px;border-top:1px solid rgba(255,255,255,.16);
}
.hero-points li strong{
  display:block;font-size:13px;font-weight:800;color:var(--accent);letter-spacing:.1em;margin-bottom:6px;
}
.hero-points li span{display:block;font-size:14px;color:rgba(242,244,239,.8);line-height:1.6}
.hero-media{flex:1 1 38%;position:relative;min-width:0}
.hero-media .frame{
  border-radius:20px;overflow:hidden;border:1px solid rgba(255,255,255,.22);
  box-shadow:0 34px 70px -34px rgba(0,0,0,.7);background:rgba(255,255,255,.06);
}
.hero-media .frame img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-strip{
  position:relative;z-index:2;display:flex;gap:38px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.14);padding:20px 0 26px;
}
.hero-strip div{font-size:13.5px;color:rgba(242,244,239,.78)}
.hero-strip b{color:var(--accent);font-size:19px;font-weight:900;margin-right:8px;letter-spacing:-.02em}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec) 0}
.section-tight{padding:76px 0}
.section-alt{background:var(--white)}
.section-ink{background:var(--brand-deep);color:var(--ink-rev)}
.section-ink h2,.section-ink h3{color:#fff}
.section-ink p{color:rgba(242,244,239,.78)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:800;
  letter-spacing:.16em;color:var(--orange);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);display:block}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:26px;
  margin-bottom:46px;flex-wrap:wrap;
}
.section-head h2{font-size:clamp(26px,3.4vw,36px);font-weight:900}
.section-head p{margin-top:10px;color:var(--ink-2);max-width:640px;font-size:16px}
.section-ink .section-head p{color:rgba(242,244,239,.75)}
.link-more{font-size:14.5px;font-weight:700;color:var(--brand);display:inline-flex;align-items:center;gap:6px;border-bottom:1px solid rgba(15,61,48,.25);padding-bottom:3px}
.link-more:hover{border-bottom-color:var(--orange);color:var(--orange)}
.section-ink .link-more{color:var(--accent);border-bottom-color:rgba(216,242,75,.4)}
.section-ink .link-more:hover{color:#fff;border-bottom-color:#fff}

/* ---------- 价值区 ---------- */
.value-grid{display:flex;gap:54px;align-items:flex-start}
.value-aside{flex:0 0 33%;position:sticky;top:110px}
.value-aside h2{font-size:clamp(26px,3.4vw,38px);margin-bottom:18px}
.value-aside p{color:var(--ink-2);font-size:16px;margin-bottom:26px}
.value-list{flex:1 1 67%;min-width:0;border-top:1px solid var(--line)}
.value-item{
  display:flex;gap:24px;padding:26px 4px;border-bottom:1px solid var(--line);
  transition:background .2s ease,padding .2s ease;
}
.value-item:hover{background:var(--brand-soft);padding-left:14px;padding-right:14px}
.value-item .num{
  flex:0 0 auto;font-size:26px;font-weight:900;color:var(--brand);letter-spacing:-.04em;
  line-height:1.1;min-width:48px;
}
.value-item h3{font-size:21px;margin-bottom:8px}
.value-item p{color:var(--ink-2);font-size:15.5px;max-width:600px}
.value-item:hover .num{color:var(--orange)}

/* ---------- 截图轮播 ---------- */
.shots{position:relative}
.shot-rail{
  display:flex;gap:26px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 26px;scrollbar-width:none;
}
.shot-rail::-webkit-scrollbar{display:none}
.shot{
  flex:0 0 auto;width:min(76vw,308px);scroll-snap-align:start;
}
.shot .phone{
  border-radius:26px;padding:12px;background:var(--brand-deep);
  box-shadow:0 22px 46px -26px rgba(11,43,34,.6);
  border:1px solid rgba(255,255,255,.08);
  transition:transform .22s ease,box-shadow .22s ease;
}
.shot:hover .phone{transform:translateY(-4px);box-shadow:var(--sh-2)}
.shot .phone img{width:100%;aspect-ratio:9/17;object-fit:cover;border-radius:16px;background:#0d2f25}
.shot .cap{margin-top:16px;display:flex;align-items:center;gap:10px}
.shot .cap b{font-size:15.5px;font-weight:800;color:var(--ink)}
.shot .cap span{font-size:13px;color:var(--ink-2)}
.shot-nav{
  position:absolute;top:-64px;right:0;display:flex;gap:10px;
}
.shot-nav button{
  width:44px;height:44px;border-radius:50%;border:1px solid rgba(15,61,48,.28);
  background:transparent;color:var(--brand);cursor:pointer;font-size:15px;
  display:flex;align-items:center;justify-content:center;transition:all .18s ease;
}
.shot-nav button:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
.dots{display:flex;gap:9px;justify-content:center;margin-top:6px}
.dots button{
  width:9px;height:9px;border-radius:50%;border:0;padding:0;background:#c9cec9;cursor:pointer;
  transition:all .2s ease;
}
.dots button.is-active{background:var(--accent-ink);width:26px;border-radius:6px}

/* ---------- 卡片 ---------- */
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;height:100%;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-3px);border-color:rgba(15,61,48,.3);box-shadow:var(--sh-2)}
.card-media{overflow:hidden;background:var(--brand-soft)}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .32s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:20px 22px 24px}
.card-body h3{font-size:18.5px;line-height:1.42;margin:12px 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{color:var(--ink-2);font-size:15px;line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.badge{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.03em;
  padding:4px 10px;border-radius:6px;background:var(--brand-soft);color:var(--brand);
}
.badge-accent{background:rgba(216,242,75,.55);color:var(--accent-ink)}
.badge-orange{background:rgba(255,90,54,.12);color:var(--orange)}
.meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-2);margin-top:16px}
.meta .dot{width:3px;height:3px;border-radius:50%;background:#bcc4bf}

/* ---------- 最新信息 ---------- */
.news-lead{margin-bottom:28px}
.news-lead-card{
  display:flex;gap:0;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);color:var(--ink);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-lead-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(15,61,48,.3)}
.news-lead-media{flex:0 0 44%;overflow:hidden}
.news-lead-media img{width:100%;height:100%;min-height:260px;object-fit:cover}
.news-lead-body{flex:1 1 56%;padding:32px 34px;display:flex;flex-direction:column;justify-content:center}
.news-lead-body h3{font-size:24px;line-height:1.36;margin:14px 0 12px}
.news-lead-body p{color:var(--ink-2);font-size:15.5px}
.news-lead-body .meta{margin-top:20px}
.read-more{margin-left:auto;font-size:14px;font-weight:700;color:var(--brand)}
.news-lead-card:hover .read-more{color:var(--orange)}
.empty-state{
  background:var(--white);border:1px dashed var(--line);border-radius:var(--r-card);
  padding:52px 24px;text-align:center;color:var(--ink-2);font-size:15.5px;
}
.empty-state a{font-weight:700;border-bottom:1px solid rgba(15,61,48,.3)}

/* ---------- 规格 ---------- */
.spec-grid{display:flex;gap:48px;align-items:flex-start;flex-wrap:wrap}
.spec-cards{flex:1 1 62%;display:grid;grid-template-columns:1fr 1fr;gap:24px;min-width:0}
.spec-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:26px 24px;box-shadow:var(--sh-1)}
.spec-card h3{font-size:19px;display:flex;align-items:center;gap:10px;margin-bottom:18px}
.spec-list li{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14.5px}
.spec-list li:last-child{border-bottom:0}
.spec-list span{color:var(--ink-2)}
.spec-list b{font-weight:700;color:var(--ink);text-align:right}
.spec-note{flex:1 1 30%;min-width:260px}
.spec-note h3{font-size:21px;margin-bottom:14px}
.spec-note p{color:var(--ink-2);font-size:15.5px;margin-bottom:16px}
.spec-note ul{margin-top:8px}
.spec-note li{position:relative;padding-left:18px;font-size:15px;color:var(--ink-2);margin-bottom:9px}
.spec-note li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;background:var(--accent);border-radius:2px}

/* ---------- 评价 ---------- */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review{
  background:#FCFBF7;border:1px solid var(--line);border-radius:var(--r-card);padding:26px 24px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.review:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.review-top{display:flex;align-items:center;gap:13px;margin-bottom:14px}
.avatar{
  width:44px;height:44px;border-radius:50%;background:var(--brand);color:var(--accent);
  display:flex;align-items:center;justify-content:center;font-weight:900;font-size:17px;flex:0 0 auto;
}
.review-top b{display:block;font-size:15.5px}
.review-top span{font-size:12.5px;color:var(--ink-2)}
.stars{color:#e0a91f;font-size:14px;letter-spacing:2px;margin-bottom:10px}
.stars i{color:#e0a91f}
.review p{font-size:15px;color:var(--ink-2);line-height:1.72}

/* ---------- 下载区 ---------- */
.download{
  background:
    linear-gradient(180deg, rgba(10,42,33,.96), rgba(10,42,33,.99)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  color:var(--ink-rev);position:relative;overflow:hidden;
}
.download::after{
  content:"";position:absolute;right:-90px;top:-90px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(216,242,75,.18),transparent 68%);pointer-events:none;
}
.dl-inner{position:relative;z-index:2;text-align:center;max-width:960px;margin:0 auto}
.dl-inner h2{font-size:clamp(26px,3.4vw,36px);color:#fff;margin-bottom:14px}
.dl-inner > p{color:rgba(242,244,239,.78);font-size:16px;margin-bottom:38px}
.dl-row{display:flex;gap:26px;align-items:center;justify-content:center;flex-wrap:wrap;margin-bottom:32px}
.dl-buttons{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;flex:1 1 480px;max-width:560px}
.dl-btn{
  display:flex;align-items:center;gap:13px;padding:13px 18px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.2);color:#fff;
  transition:all .18s ease;text-align:left;
}
.dl-btn:hover{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);transform:translateY(-2px)}
.dl-btn i{font-size:22px;width:26px;text-align:center;flex:0 0 auto}
.dl-btn b{display:block;font-size:15px;font-weight:800;line-height:1.25}
.dl-btn span{display:block;font-size:12px;opacity:.72}
.qr{
  width:140px;height:140px;background:#fff;border-radius:16px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:6px;padding:10px;flex:0 0 auto;
}
.qr svg{width:96px;height:96px;display:block}
.qr em{font-style:normal;font-size:11px;color:var(--ink-2);letter-spacing:.02em}
.trust{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.trust span{
  font-size:13px;padding:7px 15px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:rgba(242,244,239,.86);
}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line);position:relative}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:18px;
  padding:24px 46px 24px 4px;font-size:18px;font-weight:700;color:var(--ink);
  transition:color .18s ease,padding .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .idx{font-size:14px;font-weight:900;color:var(--orange);letter-spacing:.04em;padding-top:4px;flex:0 0 auto}
.faq-item summary::after{
  content:"";position:absolute;right:14px;top:32px;width:9px;height:9px;
  border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:rotate(45deg);transition:transform .22s ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg)}
.faq-item summary:hover{color:var(--brand)}
.faq-item[open] summary{padding-left:16px}
.faq-item[open] summary::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;background:var(--accent);border-radius:2px;
}
.faq-answer{padding:0 46px 26px 16px;color:var(--ink-2);font-size:15.5px;line-height:1.78}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--brand);color:#fff;border-radius:20px;padding:48px 44px;
  display:flex;align-items:center;gap:32px;flex-wrap:wrap;justify-content:space-between;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:10px}
.cta-band p{color:rgba(242,244,239,.8);font-size:15.5px;max-width:560px}
.cta-band .actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-deep);color:rgba(242,244,239,.76);padding:70px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:0}
.footer-col{padding:0 30px}
.footer-col:first-child{padding-left:0}
.footer-col:last-child{padding-right:0;border-right:0}
.footer-col{border-right:1px solid var(--line-rev)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .logo-mark{background:rgba(255,255,255,.1);color:var(--accent)}
.footer-brand b{color:#fff;font-size:16px;font-weight:900}
.site-footer h4{color:#fff;font-size:15px;font-weight:800;margin-bottom:18px;letter-spacing:.01em}
.site-footer li{margin-bottom:11px}
.site-footer a{color:rgba(242,244,239,.76)}
.site-footer a:hover{color:var(--accent)}
.footer-note{line-height:1.8;font-size:13.5px}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line-rev);padding:22px 0 26px;
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:13px;
  color:rgba(242,244,239,.58);
}
.footer-bottom a{color:rgba(242,244,239,.58)}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px)}
.reveal.in{opacity:1;transform:none;transition:opacity .24s ease-out,transform .24s ease-out}

/* ---------- Foundation 覆写 ---------- */
.button{border-radius:var(--r-pill);font-weight:700;background:var(--brand);color:#fff;transition:all .18s ease}
.button:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px)}
.button.hollow{background:transparent;border:1px solid rgba(15,61,48,.35);color:var(--brand)}
.button.hollow:hover{background:var(--brand);color:#fff}
.top-bar{background:transparent;padding:0;border:0}
.top-bar,.top-bar ul{background:transparent}
.label{border-radius:6px;font-weight:700;background:var(--brand-soft);color:var(--brand)}
.callout{border-radius:var(--r-card);border:1px dashed var(--line);background:var(--white);color:var(--ink-2)}
accordion,.accordion{border:0;background:transparent}
.accordion-title{border:0;background:transparent;color:var(--ink)}
.reveal-modal{border-radius:16px}
input[type="text"],input[type="search"],input[type="email"],textarea,select{
  border-radius:var(--r-input);border:1px solid var(--line);box-shadow:none;
}
input:focus,textarea:focus,select:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(216,242,75,.45)}
.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-margin-x > .cell{margin-left:12px;margin-right:12px;width:calc(100% - 24px)}
.grid-margin-y{margin-top:-12px;margin-bottom:-12px}
.grid-margin-y > .cell{margin-top:12px;margin-bottom:12px}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sec:92px}
  .nav-links{display:none}
  .nav-wrap{gap:14px}
}
@media (max-width:1023px){
  :root{--sec:74px}
  .site-header .nav-wrap{height:auto;padding:12px 0 14px;flex-wrap:wrap;row-gap:12px}
  .site-header.is-scrolled .nav-wrap{height:auto}
  .logo{order:1}
  .nav-burger{order:2;display:flex;margin-left:auto}
  .nav-cta{order:3;display:none}
  .nav-search{order:4;flex:1 1 100%;max-width:none}
  .mobile-bar{display:flex;order:3;gap:10px}
  .mobile-bar .btn{min-height:40px;padding:8px 16px;font-size:14px}
  .hero-inner{padding:64px 0 56px}
  .hero-grid{flex-direction:column;gap:34px;align-items:stretch}
  .hero-media{order:-1}
  .hero-media .frame img{aspect-ratio:16/9}
  .value-grid{flex-direction:column;gap:26px}
  .value-aside{position:static;flex:1 1 auto}
  .spec-cards{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px 0}
  .footer-col{padding:0 22px}
  .footer-col:nth-child(2n){border-right:0}
  .footer-col:first-child{padding-left:0}
  .news-lead-card{flex-direction:column}
  .news-lead-media img{min-height:230px;aspect-ratio:16/9}
  .dl-buttons{max-width:none;flex:1 1 100%}
}
@media (max-width:640px){
  :root{--gutter:20px;--sec:58px}
  body{font-size:16px}
  .hero h1{font-size:clamp(34px,9vw,42px)}
  .hero-points{grid-template-columns:1fr;gap:16px}
  .hero-actions .btn{width:100%}
  .section-head{margin-bottom:32px}
  .review-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-col{border-right:0;padding:0;border-bottom:1px solid var(--line-rev);padding-bottom:26px}
  .footer-col:last-child{border-bottom:0;padding-bottom:0}
  .cta-band{padding:34px 24px}
  .cta-band .actions{width:100%}
  .cta-band .actions .btn{width:100%}
  .dl-buttons{grid-template-columns:1fr}
  .shot{width:min(84vw,300px)}
  .shot-nav{position:static;margin-bottom:14px;justify-content:flex-end}
  .news-lead-body{padding:24px 22px}
  .faq-item summary{font-size:16.5px;padding-right:40px}
  .faq-answer{padding-right:20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink:#0F3D30;
  --ink-deep:#0A2A21;
  --ink-soft:rgba(15,61,48,.08);
  --accent:#D8F24B;
  --accent-dark:#cbeb2f;
  --orange:#FF5A36;
  --paper:#F7F6F1;
  --white:#FFFFFF;
  --text:#12181A;
  --text-2:#5A6663;
  --line:#E3E3DC;
  --radius:14px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(11,43,34,.06),0 12px 32px -14px rgba(11,43,34,.16);
  --shadow-2:0 18px 40px -16px rgba(11,43,34,.26);
  --container:1200px;
  --gap:26px;
  --pad-x:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Inter,system-ui,-apple-system,sans-serif;
  background:var(--paper);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:var(--ink);text-decoration:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.16;color:var(--ink);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--pad-x);}
@media (min-width:1440px){:root{--container:1280px;}}
.section{padding:96px 0;}
@media (max-width:1023px){.section{padding:72px 0;}}
@media (max-width:639px){.section{padding:56px 0;}:root{--pad-x:20px;}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);padding:12px 22px;min-height:44px;
  font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,border-color .18s ease,box-shadow .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn i{transition:transform .18s ease;font-size:13px;}
.btn:hover i{transform:translateX(4px);}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:#0c3126;transform:translateY(-2px);box-shadow:var(--shadow-2);color:#fff;}
.btn-accent{background:var(--accent);color:var(--ink-deep);}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:var(--shadow-2);color:var(--ink-deep);}
.btn-ghost{background:transparent;border-color:rgba(15,61,48,.24);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);border-color:var(--ink);color:#fff;transform:translateY(-2px);}
.btn-sm{padding:9px 16px;font-size:14px;min-height:40px;}
.btn-block{width:100%;}
.btn:active{transform:translateY(0);}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,246,241,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease,background-color .2s ease;
}
.site-header.scrolled{box-shadow:0 10px 28px -22px rgba(11,43,34,.55);background:rgba(247,246,241,.98);}
.header-inner{display:flex;align-items:center;gap:16px;height:76px;transition:height .2s ease;}
.site-header.scrolled .header-inner{height:64px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:36px;height:36px;border-radius:11px;background:var(--ink);color:var(--accent);
  display:grid;place-items:center;font-weight:900;font-size:17px;flex:0 0 auto;
}
.logo-text{display:flex;flex-direction:column;line-height:1.12;}
.logo-text b{font-size:16px;color:var(--ink);font-weight:800;letter-spacing:-.01em;}
.logo-text i{font-style:normal;font-size:11px;color:var(--text-2);letter-spacing:.16em;font-weight:600;}
.nav-search{
  flex:1 1 auto;max-width:520px;display:flex;align-items:center;gap:6px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-pill);
  padding:4px 4px 4px 14px;transition:border-color .2s,box-shadow .3s;
}
.nav-search:focus-within{border-color:var(--ink);box-shadow:0 0 0 3px rgba(216,242,75,.6);}
.nav-search svg{flex:0 0 auto;color:var(--text-2);}
.nav-search input{
  flex:1 1 auto;min-width:0;border:0;outline:0;background:transparent;
  padding:8px 6px;font-size:15px;color:var(--text);
}
.nav-search input::placeholder{color:#9aa5a1;}
.nav-search button{
  flex:0 0 auto;width:42px;height:36px;border:0;border-radius:var(--radius-pill);
  background:var(--ink);color:#fff;cursor:pointer;display:grid;place-items:center;transition:background-color .18s ease,transform .18s ease;
}
.nav-search button:hover{background:var(--ink-deep);transform:translateX(2px);}
.nav-search button:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.nav-links{display:flex;align-items:center;gap:2px;overflow-x:auto;scrollbar-width:none;flex:0 1 auto;}
.nav-links::-webkit-scrollbar{display:none;}
.nav-links a{
  white-space:nowrap;font-size:14px;color:var(--text-2);font-weight:500;
  padding:9px 11px;border-radius:9px;transition:color .18s,background-color .18s;
}
.nav-links a:hover{color:var(--ink);background:var(--ink-soft);}
.nav-links a.active{color:var(--ink);font-weight:800;box-shadow:inset 0 -2px 0 var(--accent);}
.nav-download{flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--white);
  border-radius:12px;cursor:pointer;color:var(--ink);align-items:center;justify-content:center;
}
.nav-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);background:var(--white);
  z-index:120;transform:translateX(102%);transition:transform .28s ease;
  padding:22px;overflow-y:auto;box-shadow:-20px 0 50px -30px rgba(11,43,34,.6);
}
.nav-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-head b{color:var(--ink);font-size:16px;}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);background:var(--white);border-radius:10px;cursor:pointer;color:var(--ink);}
.nav-drawer nav{display:flex;flex-direction:column;gap:4px;margin-bottom:20px;}
.nav-drawer nav a{padding:13px 12px;border-radius:11px;color:var(--ink);font-weight:600;border:1px solid transparent;}
.nav-drawer nav a:hover{background:var(--ink-soft);}
.nav-drawer nav a.active{background:var(--ink);color:#fff;}
.nav-backdrop{
  position:fixed;inset:0;background:rgba(10,42,33,.45);opacity:0;visibility:hidden;
  transition:opacity .28s ease,visibility .28s ease;z-index:110;
}
.nav-backdrop.open{opacity:1;visibility:visible;}
@media (max-width:1023px){
  .header-inner{height:auto;flex-wrap:wrap;padding:12px 0;gap:12px;}
  .site-header.scrolled .header-inner{height:auto;}
  .nav-search{order:3;flex:1 1 100%;max-width:none;}
  .nav-links,.nav-download{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
}

/* ---------- 面包屑 & 文章头部 ---------- */
.crumbs{padding:26px 0 0;font-size:13px;color:var(--text-2);display:flex;flex-wrap:wrap;gap:6px;align-items:center;}
.crumbs a{color:var(--text-2);}
.crumbs a:hover{color:var(--ink);text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:2px;}
.crumbs span.sep{color:#b6bdb9;}
.crumbs span.current{color:#8b9491;}
.article-head{padding:20px 0 40px;border-bottom:1px solid var(--line);}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:8px;
  background:var(--ink-soft);color:var(--ink);font-size:12px;font-weight:700;letter-spacing:.04em;
}
.tag-orange{background:rgba(255,90,54,.12);color:#c93c1c;}
.article-head h1{
  font-size:clamp(30px,4.6vw,46px);margin:16px 0 18px;max-width:900px;
}
.article-meta{display:flex;flex-wrap:wrap;gap:8px 14px;font-size:13px;color:var(--text-2);align-items:center;}
.article-meta b{color:var(--ink);font-weight:700;}
.article-cover{margin-top:26px;border-radius:var(--radius);overflow:hidden;position:relative;background:var(--ink);}
.article-cover img{width:100%;aspect-ratio:16/7;object-fit:cover;opacity:.96;}

/* ---------- 文章布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:52px;align-items:start;padding:52px 0 96px;}
.article-content{font-size:17px;line-height:1.8;color:var(--text);max-width:790px;}
.article-content h2{font-size:26px;margin:44px 0 16px;padding-left:18px;position:relative;}
.article-content h2::before{content:"";position:absolute;left:0;top:.36em;width:7px;height:1em;background:var(--accent);border-radius:2px;}
.article-content h3{font-size:20px;margin:32px 0 12px;color:#22322d;font-weight:700;}
.article-content p{margin:0 0 1.2em;}
.article-content a{color:var(--ink);font-weight:600;border-bottom:2px solid var(--accent);transition:border-color .18s;}
.article-content a:hover{border-bottom-color:var(--ink);}
.article-content ul,.article-content ol{margin:0 0 1.3em;padding-left:0;}
.article-content ul li{position:relative;padding-left:24px;margin-bottom:.6em;}
.article-content ul li::before{content:"";position:absolute;left:0;top:.68em;width:8px;height:8px;border-radius:2px;background:var(--accent);}
.article-content ol{list-style:none;counter-reset:li;}
.article-content ol li{position:relative;counter-increment:li;padding-left:32px;margin-bottom:.6em;}
.article-content ol li::before{content:counter(li,decimal-leading-zero);position:absolute;left:0;top:0;color:var(--orange);font-weight:800;font-size:14px;}
.article-content blockquote{
  margin:1.6em 0;padding:18px 22px;background:#EFEEE7;border-left:3px solid var(--accent);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:#33413c;font-style:italic;
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{border-radius:var(--radius-sm);margin:1.6em auto;box-shadow:var(--shadow-1);}
.article-content figure{margin:1.8em 0;}
.article-content figcaption{text-align:center;font-size:13px;color:var(--text-2);margin-top:10px;}
.article-content table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;border-radius:var(--radius-sm);overflow:hidden;}
.article-content thead th{background:var(--ink);color:#fff;text-align:left;padding:12px 14px;font-weight:700;}
.article-content tbody td{padding:12px 14px;border-bottom:1px solid var(--line);}
.article-content tbody tr:nth-child(even){background:#EFEEE7;}
.article-content strong{color:var(--ink);}
.article-content hr{border:0;border-top:1px solid var(--line);margin:2.4em 0;}

.article-foot{margin-top:48px;padding-top:26px;border-top:1px solid var(--line);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:28px;}
.pager a{
  display:block;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.pager a:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(15,61,48,.3);}
.pager small{display:block;font-size:12px;color:var(--text-2);margin-bottom:6px;letter-spacing:.06em;}
.pager b{font-size:15px;color:var(--ink);font-weight:700;}
.pager .next{text-align:right;}
@media (max-width:639px){.pager{grid-template-columns:1fr;}.pager .next{text-align:left;}}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
@media (max-width:1023px){.article-side{position:static;}}
.side-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-1);}
.side-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:14px;height:3px;border-radius:2px;background:var(--accent);}
.side-author{display:flex;gap:12px;align-items:center;margin-bottom:12px;}
.side-avatar{width:44px;height:44px;border-radius:12px;background:var(--ink);color:var(--accent);display:grid;place-items:center;font-weight:800;}
.side-author b{display:block;font-size:15px;color:var(--ink);}
.side-author span{font-size:12px;color:var(--text-2);}
.side-card p{font-size:14px;color:var(--text-2);line-height:1.7;}
.hot-list li{border-bottom:1px dashed var(--line);}
.hot-list li:last-child{border-bottom:0;}
.hot-list a{display:flex;gap:10px;padding:11px 0;font-size:14px;color:#2b3a35;font-weight:500;transition:color .18s;}
.hot-list a:hover{color:var(--orange);}
.hot-list em{font-style:normal;color:var(--orange);font-weight:800;font-size:13px;flex:0 0 auto;}
.side-cta{background:var(--ink);border-radius:var(--radius);padding:24px;color:#eaf0e9;position:relative;overflow:hidden;}
.side-cta::after{content:"";position:absolute;right:-40px;bottom:-40px;width:140px;height:140px;border-radius:50%;background:rgba(216,242,75,.12);}
.side-cta h3{color:#fff;font-size:18px;margin-bottom:10px;position:relative;}
.side-cta p{color:rgba(242,244,239,.78);font-size:14px;margin-bottom:16px;position:relative;}
.side-cta .btn{position:relative;}

/* ---------- 相关推荐 ---------- */
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap);}
@media (max-width:1023px){.rec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:639px){.rec-grid{grid-template-columns:1fr;}}
.rec-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.rec-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(15,61,48,.3);}
.rec-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--ink);}
.rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.rec-card:hover .rec-thumb img{transform:scale(1.03);}
.rec-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rec-body h3{font-size:17px;line-height:1.4;font-weight:700;}
.rec-body p{font-size:14px;color:var(--text-2);}
.rec-more{margin-top:auto;font-size:13px;font-weight:700;color:var(--ink);display:inline-flex;align-items:center;gap:6px;}
.rec-card:hover .rec-more{color:var(--orange);}

/* ---------- CTA 区块 ---------- */
.cta-band{
  background:var(--ink-deep) url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  position:relative;border-radius:calc(var(--radius) + 6px);overflow:hidden;
  padding:64px 44px;text-align:center;color:#eaf0e9;
}
.cta-band::before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(10,42,33,.94),rgba(15,61,48,.82));}
.cta-band > *{position:relative;}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,34px);margin-bottom:14px;}
.cta-band p{max-width:620px;margin:0 auto 26px;color:rgba(242,244,239,.82);font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
@media (max-width:639px){.cta-band{padding:48px 22px;}.cta-actions .btn{width:100%;}}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;margin:0 auto;}
.faq-item{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:0 22px;margin-bottom:14px;transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item[open]{box-shadow:inset 3px 0 0 var(--accent),var(--shadow-1);border-color:rgba(15,61,48,.24);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  padding:19px 0;font-weight:700;font-size:17px;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-num{color:var(--orange);font-weight:800;font-size:13px;letter-spacing:.08em;flex:0 0 auto;}
.faq-arrow{margin-left:auto;transition:transform .22s ease;color:var(--text-2);}
.faq-item[open] .faq-arrow{transform:rotate(180deg);}
.faq-body{padding:0 0 22px 34px;color:var(--text-2);font-size:15px;}
.faq-body p{margin:0;}
@media (max-width:639px){.faq-body{padding-left:0;}}

/* ---------- 空态 ---------- */
.empty-state{
  background:#EFEEE7;border:1px dashed var(--line);border-radius:var(--radius);
  padding:52px 24px;text-align:center;
}
.empty-state h2{font-size:22px;margin-bottom:12px;}
.empty-state p{color:var(--text-2);max-width:520px;margin:0 auto 22px;font-size:15px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-deep);color:rgba(242,244,239,.76);padding:72px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:0;}
.footer-col{padding:0 26px;border-left:1px solid rgba(255,255,255,.12);}
.footer-col:first-child{border-left:0;padding-left:0;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .logo-mark{background:var(--accent);color:var(--ink-deep);}
.footer-brand b{color:#fff;font-size:16px;font-weight:800;}
.footer-note{font-size:14px;line-height:1.75;color:rgba(242,244,239,.72);}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em;}
.site-footer ul li{margin-bottom:10px;}
.site-footer ul li,.site-footer ul li a{font-size:14px;color:rgba(242,244,239,.72);}
.site-footer ul li a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:rgba(242,244,239,.6);
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-col{padding:0 0 24px;border-left:0;border-bottom:1px solid rgba(255,255,255,.12);margin-bottom:24px;}
  .footer-col:nth-child(odd){padding-right:20px;}
}
@media (max-width:639px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-col:nth-child(odd){padding-right:0;}
  .site-footer{padding:56px 0 24px;}
}

/* ---------- 动效 ---------- */
.reveal-up{opacity:0;transform:translateY(12px);transition:opacity .24s ease-out,transform .24s ease-out;}
.reveal-up.visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal-up{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
  .btn,.rec-card,.pager a{transition:none;}
}

/* roulang page: category1 */
:root{
  --brand:#0F3D30;
  --brand-deep:#0A2A21;
  --brand-soft:#1B5443;
  --accent:#D8F24B;
  --orange:#FF5A36;
  --bg:#F7F6F1;
  --card:#FFFFFF;
  --text:#12181A;
  --muted:#5A6663;
  --line:#E3E3DC;
  --line-dark:rgba(255,255,255,.12);
  --invert:#F2F4EF;
  --radius-card:14px;
  --radius-input:12px;
  --radius-pill:999px;
  --shadow-rest:0 1px 2px rgba(11,43,34,.06),0 12px 32px -14px rgba(11,43,34,.16);
  --shadow-hover:0 18px 40px -16px rgba(11,43,34,.26);
  --space-section:clamp(56px,7vw,112px);
  --container:1200px;
  --font-cn:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter","SF Pro Text",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:hover{color:var(--brand-soft);}
button{font-family:inherit;}
h1,h2,h3,h4{font-family:var(--font-cn);font-weight:800;color:var(--text);margin:0;letter-spacing:-.02em;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:var(--accent);color:var(--brand-deep);}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media (min-width:1440px){.container{max-width:1280px;}}

/* ============ header / nav ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,246,241,.94);
  backdrop-filter:saturate(150%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease,background .2s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 30px -22px rgba(11,43,34,.5);}
.nav-shell{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:76px;
  transition:min-height .2s ease;
}
.site-header.is-scrolled .nav-shell{min-height:64px;}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  font-weight:800;
  color:var(--brand);
}
.logo-mark{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:10px;
  background:var(--brand);
  color:var(--accent);
  font-size:17px;
  font-weight:800;
  flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.05;}
.brand-text b{font-size:17px;font-weight:800;letter-spacing:.01em;color:var(--brand);}
.brand-text small{font-size:11px;color:var(--muted);letter-spacing:.18em;font-family:var(--font-num);}

.nav-search{
  flex:1 1 auto;
  max-width:520px;
  display:flex;
  align-items:center;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  padding:4px 4px 4px 16px;
  box-shadow:var(--shadow-rest);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(216,242,75,.55);
}
.nav-search svg{flex:0 0 auto;color:var(--muted);}
.nav-search input{
  flex:1 1 auto;
  border:0;
  background:transparent;
  font-size:15px;
  padding:9px 10px;
  color:var(--text);
  font-family:inherit;
  min-width:0;
}
.nav-search input::placeholder{color:#9AA5A1;}
.nav-search input:focus{outline:none;}
.nav-search button{
  flex:0 0 auto;
  border:0;
  cursor:pointer;
  height:38px;
  padding:0 18px;
  border-radius:var(--radius-pill);
  background:var(--brand);
  color:#fff;
  font-size:14px;
  font-weight:700;
  transition:background .18s ease,transform .18s ease;
}
.nav-search button:hover{background:var(--brand-deep);transform:translateY(-1px);}
.nav-search button:active{transform:translateY(0);}

.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  flex:0 1 auto;
  overflow-x:auto;
  scrollbar-width:none;
}
.nav-links::-webkit-scrollbar{display:none;}
.nav-links a{
  white-space:nowrap;
  font-size:14.5px;
  font-weight:600;
  color:var(--muted);
  padding:9px 12px;
  border-radius:8px;
  position:relative;
  transition:color .18s ease,background .18s ease;
}
.nav-links a:hover{color:var(--brand);background:rgba(15,61,48,.06);}
.nav-links a.active{color:var(--brand);}
.nav-links a.active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:3px;
  border-radius:2px;
  background:var(--accent);
}
.nav-cta{
  flex:0 0 auto;
  margin-left:auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border-radius:var(--radius-pill);
  background:var(--accent);
  color:var(--brand-deep);
  font-weight:800;
  font-size:15px;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease;
}
.nav-cta:hover{color:var(--brand-deep);background:#e4f96d;transform:translateY(-2px);box-shadow:0 12px 24px -14px rgba(10,42,33,.5);}
.nav-cta:active{transform:translateY(0);}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:12px;
  background:var(--card);
  cursor:pointer;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px;}

.drawer{
  display:none;
  border-top:1px solid var(--line);
  background:var(--card);
  padding:14px 0 20px;
}
.drawer.is-open{display:block;}
.drawer ul{display:flex;flex-direction:column;gap:2px;}
.drawer a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:48px;
  padding:0 4px;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  border-bottom:1px solid var(--line);
}
.drawer a:hover{color:var(--brand);}
.drawer .drawer-cta{
  margin-top:16px;
  justify-content:center;
  background:var(--brand);
  color:#fff;
  border-radius:var(--radius-pill);
  border-bottom:0;
  min-height:46px;
}
.drawer .drawer-cta:hover{color:#fff;background:var(--brand-deep);}
.mobile-search{display:none;}

/* ============ breadcrumb & banner ============ */
.crumb{
  font-size:13px;
  color:var(--muted);
  padding:20px 0 0;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb span.sep{margin:0 8px;color:#C4CCC8;}
.crumb em{font-style:normal;color:#8D9894;}

.page-banner{
  position:relative;
  margin-top:18px;
  border-radius:20px;
  overflow:hidden;
  background:var(--brand-deep);
  min-height:340px;
  display:flex;
  align-items:flex-end;
}
.page-banner img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.55;
}
.page-banner::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(120deg,rgba(10,42,33,.94) 12%,rgba(15,61,48,.7) 52%,rgba(10,42,33,.35) 100%);
}
.banner-inner{
  position:relative;
  z-index:2;
  padding:clamp(28px,4vw,52px);
  width:100%;
}
.banner-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(216,242,75,.16);
  border:1px solid rgba(216,242,75,.45);
  color:var(--accent);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.08em;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  margin-bottom:18px;
}
.page-banner h1{
  color:#fff;
  font-size:clamp(34px,4.6vw,60px);
  line-height:1.1;
  margin-bottom:14px;
}
.page-banner p{
  color:rgba(242,244,239,.86);
  max-width:760px;
  font-size:16.5px;
  line-height:1.7;
  margin:0;
}
.banner-stats{
  display:flex;
  flex-wrap:wrap;
  gap:14px 34px;
  margin-top:26px;
}
.banner-stats div{color:rgba(242,244,239,.72);font-size:13.5px;}
.banner-stats b{
  display:block;
  font-family:var(--font-num);
  font-size:24px;
  color:var(--accent);
  font-weight:800;
  line-height:1.2;
}

/* ============ sections ============ */
.section{padding:var(--space-section) 0 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  margin-bottom:32px;
}
.section-head h2{
  font-size:clamp(26px,2.8vw,36px);
  line-height:1.18;
  position:relative;
  padding-left:18px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:.18em;
  width:6px;height:.86em;
  border-radius:3px;
  background:var(--accent);
}
.section-head p{
  color:var(--muted);
  font-size:15px;
  margin:10px 0 0 18px;
  max-width:640px;
}
.section-more{
  font-size:14.5px;
  font-weight:700;
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand);
}
.section-more:hover{color:var(--orange);}

/* value strip */
.value-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-rest);
  overflow:hidden;
}
.value-item{
  padding:30px 26px;
  border-right:1px solid var(--line);
  transition:background .2s ease;
}
.value-item:last-child{border-right:0;}
.value-item:hover{background:#FBFBF7;}
.value-item .num{
  font-family:var(--font-num);
  font-size:30px;
  font-weight:800;
  color:var(--orange);
  line-height:1;
  display:block;
  margin-bottom:14px;
}
.value-item h3{font-size:18px;margin-bottom:8px;}
.value-item p{font-size:14.5px;color:var(--muted);margin:0;line-height:1.7;}

/* cards grid */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:26px;
}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-rest);
  display:flex;
  flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(15,61,48,.3);
}
.card-cover{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:repeating-linear-gradient(135deg,#0F3D30 0 12px,#134a3b 12px 24px);
}
.card-cover img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.card:hover .card-cover img{transform:scale(1.03);}
.badge{
  display:inline-flex;
  align-items:center;
  font-size:12px;
  font-weight:700;
  letter-spacing:.04em;
  padding:4px 10px;
  border-radius:6px;
  background:rgba(15,61,48,.08);
  color:var(--brand);
}
.badge-orange{background:rgba(255,90,54,.12);color:#C8391B;}
.badge-accent{background:var(--accent);color:var(--brand-deep);}
.card-cover .badge{
  position:absolute;
  left:14px;top:14px;
  background:rgba(255,255,255,.94);
  color:var(--brand);
  backdrop-filter:blur(4px);
}
.card-body{padding:22px;display:flex;flex-direction:column;flex:1 1 auto;}
.card-meta{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--muted);
  font-family:var(--font-num);
  margin-bottom:12px;
}
.card-meta .dot{width:4px;height:4px;border-radius:50%;background:#C4CCC8;}
.card h3{
  font-size:19px;
  line-height:1.45;
  margin-bottom:10px;
  transition:color .18s ease;
}
.card:hover h3{color:var(--brand);}
.card p{
  font-size:14.5px;
  color:var(--muted);
  margin:0 0 18px;
  line-height:1.72;
}
.card-link{
  margin-top:auto;
  font-size:14.5px;
  font-weight:700;
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand);
}
.card-link svg{transition:transform .18s ease;}
.card:hover .card-link svg{transform:translateX(4px);}

/* featured wide row */
.feature-row{
  display:grid;
  grid-template-columns:1.15fr 1fr;
  gap:0;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-rest);
  margin-bottom:26px;
}
.feature-row .fr-cover{position:relative;min-height:320px;background:#0F3D30;}
.feature-row .fr-cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.feature-row .fr-body{padding:clamp(24px,3vw,40px);display:flex;flex-direction:column;justify-content:center;}
.feature-row h3{font-size:clamp(20px,2.2vw,28px);line-height:1.35;margin:14px 0 12px;}
.feature-row p{color:var(--muted);font-size:15.5px;margin-bottom:20px;}

/* pagination */
.pager{
  display:flex;
  justify-content:center;
  align-items:center;
  gap:8px;
  margin-top:44px;
  flex-wrap:wrap;
}
.pager a,.pager span{
  min-width:44px;
  height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:0 16px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--card);
  font-size:14.5px;
  font-weight:600;
  color:var(--muted);
  transition:all .18s ease;
}
.pager a:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.pager .is-current{
  background:var(--brand);
  border-color:var(--brand);
  color:#fff;
}
.pager .is-disabled{opacity:.45;cursor:not-allowed;}

/* topic list */
.topic-list{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-rest);
  overflow:hidden;
}
.topic-item{
  display:grid;
  grid-template-columns:120px 1fr auto;
  gap:20px;
  align-items:center;
  padding:20px 24px;
  border-bottom:1px solid var(--line);
  transition:background .18s ease;
}
.topic-item:last-child{border-bottom:0;}
.topic-item:hover{background:#FBFBF7;}
.topic-item .t-date{
  font-family:var(--font-num);
  font-size:13.5px;
  color:var(--muted);
}
.topic-item .t-main h4{font-size:16.5px;margin-bottom:5px;}
.topic-item .t-main p{font-size:14px;color:var(--muted);margin:0;}
.topic-item .t-go{
  font-size:13.5px;
  font-weight:700;
  color:var(--brand);
  white-space:nowrap;
}

/* FAQ */
.faq-wrap{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:18px;
}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:6px 22px;
  box-shadow:var(--shadow-rest);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(15,61,48,.28);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  gap:14px;
  padding:18px 0;
  font-size:16.5px;
  font-weight:700;
  color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item .f-num{
  font-family:var(--font-num);
  font-size:14px;
  font-weight:800;
  color:var(--orange);
  flex:0 0 auto;
}
.faq-item .f-arrow{
  margin-left:auto;
  flex:0 0 auto;
  transition:transform .22s ease;
  color:var(--muted);
}
.faq-item[open] .f-arrow{transform:rotate(180deg);}
.faq-item[open] summary{color:var(--brand);}
.faq-item .f-answer{
  border-left:3px solid var(--accent);
  padding:0 0 18px 14px;
  margin-left:2px;
  font-size:14.8px;
  color:var(--muted);
  line-height:1.78;
}

/* CTA band */
.cta-band{
  margin-top:var(--space-section);
  background:var(--brand-deep);
  border-radius:22px;
  padding:clamp(32px,4.5vw,64px);
  position:relative;
  overflow:hidden;
  display:grid;
  grid-template-columns:1.3fr 1fr;
  gap:34px;
  align-items:center;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:38px 38px;
  opacity:.55;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-60px;bottom:-70px;
  width:280px;height:280px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(216,242,75,.34),transparent 68%);
}
.cta-band>*{position:relative;z-index:2;}
.cta-band h2{
  color:#fff;
  font-size:clamp(26px,3vw,38px);
  line-height:1.2;
  margin-bottom:14px;
}
.cta-band p{color:rgba(242,244,239,.82);font-size:15.5px;margin:0;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  min-height:48px;
  padding:0 26px;
  border-radius:var(--radius-pill);
  font-size:15.5px;
  font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn svg{transition:transform .18s ease;}
.btn:hover svg{transform:translateX(4px);}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--brand);color:#fff;border-color:var(--brand);}
.btn-primary:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px -16px rgba(10,42,33,.7);}
.btn-accent{background:var(--accent);color:var(--brand-deep);}
.btn-accent:hover{background:#e4f96d;color:var(--brand-deep);transform:translateY(-2px);box-shadow:0 16px 30px -16px rgba(216,242,75,.7);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.42);}
.btn-ghost:hover{background:#fff;color:var(--brand-deep);border-color:#fff;transform:translateY(-2px);}
.btn-ghost-dark{background:transparent;color:var(--brand);border-color:rgba(15,61,48,.28);}
.btn-ghost-dark:hover{background:var(--brand);color:#fff;border-color:var(--brand);transform:translateY(-2px);}

.cta-side{
  background:rgba(255,255,255,.06);
  border:1px solid var(--line-dark);
  border-radius:16px;
  padding:24px;
}
.cta-side ul{display:flex;flex-direction:column;gap:14px;}
.cta-side li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  color:rgba(242,244,239,.86);
  font-size:14.5px;
  line-height:1.65;
}
.cta-side li b{color:var(--accent);font-family:var(--font-num);flex:0 0 auto;}

/* footer */
.site-footer{
  margin-top:var(--space-section);
  background:var(--brand-deep);
  color:rgba(242,244,239,.78);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:0;
}
.footer-col{padding:0 28px;}
.footer-col:first-child{padding-left:0;}
.footer-col:last-child{padding-right:0;}
.footer-col+.footer-col{border-left:1px solid var(--line-dark);}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.footer-brand .logo-mark{background:var(--accent);color:var(--brand-deep);}
.footer-brand b{color:#fff;font-size:16.5px;font-weight:800;letter-spacing:.01em;}
.footer-note{font-size:14px;line-height:1.78;color:rgba(242,244,239,.7);margin:0;max-width:340px;}
.footer-col h4{
  color:#fff;
  font-size:15px;
  font-weight:700;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col li{font-size:14px;color:rgba(242,244,239,.72);}
.footer-col a{font-size:14px;color:rgba(242,244,239,.78);}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:52px;
  border-top:1px solid var(--line-dark);
  padding:22px 0 28px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:13.5px;
  color:rgba(242,244,239,.6);
}

/* reveal animation */
.reveal-up{opacity:0;transform:translateY(12px);transition:opacity .24s ease-out,transform .24s ease-out;}
.reveal-up.is-visible{opacity:1;transform:none;}

/* responsive */
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .nav-search{display:none;}
  .mobile-search{
    display:block;
    padding:12px 0 4px;
  }
  .mobile-search .nav-search{display:flex;max-width:none;}
  .value-grid{grid-template-columns:repeat(2,1fr);}
  .value-item:nth-child(2){border-right:0;}
  .value-item:nth-child(1),.value-item:nth-child(2){border-bottom:1px solid var(--line);}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .feature-row{grid-template-columns:1fr;}
  .feature-row .fr-cover{min-height:240px;}
  .faq-wrap{grid-template-columns:1fr;}
  .cta-band{grid-template-columns:1fr; padding:38px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 0;}
  .footer-col{padding:0 22px;}
  .footer-col:nth-child(odd){padding-left:0;border-left:0;}
  .footer-col:nth-child(even){border-left:0;padding-right:0;}
  .footer-col:nth-child(3),.footer-col:nth-child(4){border-top:1px solid var(--line-dark);padding-top:26px;}
}
@media (max-width:639px){
  body{font-size:16px;}
  .container{padding-left:20px;padding-right:20px;}
  .nav-shell{min-height:64px;gap:10px;}
  .brand-text small{display:none;}
  .nav-cta{display:none;}
  .page-banner{border-radius:16px;min-height:300px;margin-top:14px;}
  .banner-inner{padding:24px;}
  .banner-stats{gap:12px 22px;}
  .banner-stats b{font-size:20px;}
  .value-grid{grid-template-columns:1fr;}
  .value-item{border-right:0;border-bottom:1px solid var(--line);}
  .value-item:last-child{border-bottom:0;}
  .card-grid{grid-template-columns:1fr;}
  .topic-item{grid-template-columns:1fr;gap:10px;padding:18px;}
  .topic-item .t-go{justify-self:start;}
  .btn{width:100%;}
  .cta-actions{flex-direction:column;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-col{padding:0;}
  .footer-col+.footer-col{border-top:1px solid var(--line-dark);padding-top:26px;border-left:0;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .pager a,.pager span{padding:0 12px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal-up{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --brand:#0F3D30;
  --brand-dark:#0A2A21;
  --brand-soft:rgba(15,61,48,.08);
  --brand-line:rgba(15,61,48,.28);
  --accent:#D8F24B;
  --accent-ink:#0A2A21;
  --orange:#FF5A36;
  --orange-ink:#C0361A;
  --bg:#F7F6F1;
  --card:#FFFFFF;
  --text:#12181A;
  --muted:#5A6663;
  --inverse:#F2F4EF;
  --line:#E3E3DC;
  --radius:14px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(11,43,34,.06),0 12px 32px -14px rgba(11,43,34,.16);
  --shadow-2:0 18px 40px -16px rgba(11,43,34,.26);
  --gap:clamp(18px,2.3vw,28px);
  --section-y:clamp(56px,6.6vw,108px);
  --container:1200px;
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:104px}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:17px;line-height:1.75;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer;border:0;background:none}
input{font:inherit}
h1,h2,h3,h4{margin:0;line-height:1.15;letter-spacing:-.02em;font-weight:800;color:var(--text)}
p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.grid-container{max-width:var(--container);margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px}
@media (min-width:1440px){.grid-container{max-width:1280px}}
@media (max-width:640px){.grid-container{padding-left:20px;padding-right:20px}}

/* ---------- 通用组件 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;padding:0 26px;border:1px solid transparent;border-radius:var(--radius-pill);font-size:16px;font-weight:700;line-height:1;white-space:nowrap;transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn .arrow{transition:transform .18s ease}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--brand);color:var(--inverse)}
.btn-primary:hover{background:#0B3025;box-shadow:var(--shadow-2)}
.btn-accent{background:var(--accent);color:var(--accent-ink)}
.btn-accent:hover{background:#CBE63C;box-shadow:0 16px 34px -18px rgba(11,43,34,.5)}
.btn-ghost{background:transparent;border-color:var(--brand-line);color:var(--brand)}
.btn-ghost:hover{background:var(--brand);border-color:var(--brand);color:var(--inverse)}
.btn-ghost-light{background:transparent;border-color:rgba(242,244,239,.42);color:var(--inverse)}
.btn-ghost-light:hover{background:var(--inverse);color:var(--brand-dark);border-color:var(--inverse)}
.btn-sm{min-height:42px;padding:0 20px;font-size:15px}
.button{background:var(--brand);color:var(--inverse);border-radius:var(--radius-pill);font-weight:700;border:0;padding:14px 26px;transition:background-color .18s ease,transform .18s ease}
.button:hover,.button:focus{background:#0B3025;color:var(--inverse);transform:translateY(-2px)}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:6px;font-size:12px;font-weight:700;letter-spacing:.06em;line-height:1.5}
.badge-soft{background:var(--brand-soft);color:var(--brand)}
.badge-accent{background:var(--accent);color:var(--accent-ink)}
.badge-orange{background:rgba(255,90,54,.13);color:var(--orange-ink)}
.label{background:var(--brand-soft);color:var(--brand);border-radius:6px;font-weight:700;font-size:12px;padding:5px 10px}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--orange-ink);margin-bottom:14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-1);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(15,61,48,.3)}
.eyebrow::before{content:"";display:inline-block;width:22px;height:3px;border-radius:2px;background:var(--accent);vertical-align:middle;margin-right:10px}
.section{padding:var(--section-y) 0}
.section--tight{padding-top:0}
.section--paper{background:#fff}
.section-head{max-width:760px;margin-bottom:clamp(28px,3.6vw,48px)}
.section-head h2{font-size:clamp(26px,3vw,36px)}
.section-desc{margin-top:16px;color:var(--muted);font-size:17px}

/* ---------- 头部与导航 ---------- */
.site-header{position:sticky;top:0;z-index:70;background:rgba(247,246,241,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(8px);transition:box-shadow .2s ease}
.site-header.is-scrolled{box-shadow:0 8px 24px -18px rgba(11,43,34,.5)}
.header-inner{display:flex;align-items:center;gap:18px;min-height:76px;transition:min-height .2s ease}
.site-header.is-scrolled .header-inner{min-height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:10px;background:var(--brand);color:var(--accent);font-weight:800;font-size:18px;letter-spacing:0}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--brand);white-space:nowrap}
.nav-search{position:relative;display:flex;align-items:center;gap:8px;flex:1 1 320px;max-width:520px;padding:6px 6px 6px 16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-pill);box-shadow:var(--shadow-1);transition:border-color .2s ease,box-shadow .25s ease}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(216,242,75,.55)}
.nav-search .search-icon{display:inline-flex;color:var(--muted);flex:0 0 auto}
.nav-search input[type="search"]{flex:1 1 auto;min-width:0;border:0;outline:0;background:transparent;font-size:15px;color:var(--text);padding:8px 0}
.nav-search input[type="search"]::placeholder{color:#8B9491}
.search-submit{display:grid;place-items:center;width:38px;height:38px;flex:0 0 auto;border-radius:50%;background:var(--brand);color:var(--inverse);transition:background-color .18s ease,transform .18s ease}
.search-submit:hover{background:#0B3025;transform:translateY(-1px)}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto;overflow-x:auto;scrollbar-width:none}
.nav-links::-webkit-scrollbar{display:none}
.nav-links a{padding:9px 13px;border-radius:var(--radius-pill);font-size:15px;font-weight:600;color:var(--muted);white-space:nowrap;transition:color .18s ease,background-color .18s ease}
.nav-links a:hover{color:var(--brand);background:var(--brand-soft)}
.nav-links a.active{color:var(--brand);background:rgba(15,61,48,.1)}
.nav-cta{flex:0 0 auto}
.nav-toggle{display:none;place-items:center;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--brand)}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.drawer{position:fixed;inset:0;z-index:90;opacity:0;pointer-events:none;transition:opacity .2s ease}
.drawer.is-open{opacity:1;pointer-events:auto}
.drawer-backdrop{position:absolute;inset:0;background:rgba(10,42,33,.5)}
.drawer-panel{position:absolute;top:0;right:0;height:100%;width:min(88vw,340px);background:#fff;padding:22px 20px 28px;display:flex;flex-direction:column;gap:6px;overflow-y:auto;transform:translateX(100%);transition:transform .24s ease;box-shadow:-16px 0 40px -24px rgba(11,43,34,.6)}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);color:var(--brand);display:grid;place-items:center}
.drawer-panel a.drawer-link{padding:14px 12px;border-radius:12px;font-weight:600;color:var(--text);border-bottom:1px solid var(--line)}
.drawer-panel a.drawer-link:hover{background:var(--brand-soft);color:var(--brand)}
.drawer-panel a.drawer-link.active{color:var(--brand);background:var(--brand-soft)}
.drawer-cta{margin-top:16px}
@media (max-width:1023px){
  .header-inner{flex-wrap:wrap;gap:12px;padding-top:12px;padding-bottom:12px}
  .brand{order:1}
  .nav-toggle{display:grid;order:2;margin-left:auto}
  .nav-dl-icon{order:3;display:inline-flex}
  .nav-search{order:4;flex:0 0 100%;max-width:none}
  .nav-links,.nav-cta{display:none}
  .nav-dl-icon{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:var(--accent);color:var(--accent-ink)}
}
@media (min-width:1024px){.nav-dl-icon{display:none}}

/* ---------- 分类横幅 ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--brand-dark);color:var(--inverse);padding:clamp(52px,7vw,98px) 0 clamp(44px,5.4vw,76px)}
.page-hero .hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.5}
.page-hero .hero-veil{position:absolute;inset:0;background:linear-gradient(102deg,rgba(10,42,33,.95) 0%,rgba(10,42,33,.86) 46%,rgba(10,42,33,.5) 100%)}
.page-hero .hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);background-size:52px 52px;pointer-events:none}
.hero-inner{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(242,244,239,.7);margin-bottom:22px}
.crumbs a:hover{color:var(--accent)}
.crumbs .sep{opacity:.5}
.crumbs .current{color:rgba(242,244,239,.95)}
.page-hero h1{margin-top:18px;font-size:clamp(32px,5vw,60px);line-height:1.1;color:var(--inverse);max-width:900px}
.hero-sub{margin-top:20px;max-width:660px;font-size:clamp(16px,1.4vw,19px);color:rgba(242,244,239,.86)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:clamp(18px,2.4vw,30px);margin-top:clamp(34px,4vw,52px);padding-top:26px;border-top:1px solid rgba(242,244,239,.18)}
.hero-stats li{display:flex;flex-direction:column;gap:4px}
.stat-idx{font-size:12px;font-weight:800;letter-spacing:.16em;color:var(--accent)}
.hero-stats b{font-size:26px;font-weight:800;color:var(--inverse);letter-spacing:-.02em}
.hero-stats span{font-size:14px;color:rgba(242,244,239,.72)}
@media (max-width:640px){.hero-actions .btn{width:100%}}

/* ---------- 价值条 ---------- */
.value-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(232px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.value-item{background:#fff;padding:clamp(22px,2.4vw,30px);transition:background-color .2s ease}
.value-item:hover{background:#FBFBF7}
.value-item .num{font-size:13px;font-weight:800;letter-spacing:.16em;color:var(--orange)}
.value-item h3{margin-top:12px;font-size:19px}
.value-item p{margin-top:10px;color:var(--muted);font-size:15.5px;line-height:1.7}

/* ---------- 数据主体区（左锚点 + 右密集列表） ---------- */
.data-layout{align-items:flex-start}
.anchor-nav{position:sticky;top:104px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px;box-shadow:var(--shadow-1)}
.anchor-title{display:block;padding:6px 12px 12px;font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--muted)}
.anchor-link{display:block;padding:10px 12px;border-left:3px solid transparent;border-radius:10px;font-size:15px;font-weight:600;color:var(--muted);transition:color .18s ease,background-color .18s ease,border-color .18s ease}
.anchor-link:hover{color:var(--brand);background:var(--brand-soft)}
.anchor-link.is-current{color:var(--brand);background:var(--brand-soft);border-left-color:var(--accent)}
.anchor-foot{margin-top:12px;padding:12px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);line-height:1.6}
.dense-block{margin-bottom:clamp(28px,3.4vw,44px)}
.dense-block:last-child{margin-bottom:0}
.dense-block h3{font-size:clamp(20px,2vw,24px);display:flex;align-items:center;gap:12px}
.dense-block h3::before{content:"";width:20px;height:3px;border-radius:2px;background:var(--accent);flex:0 0 auto}
.dense-note{margin-top:10px;color:var(--muted);font-size:15px}
.dense-list{margin-top:18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-1)}
.dense-row{display:grid;grid-template-columns:96px minmax(0,1fr) auto;gap:18px;align-items:center;padding:18px 20px;border-bottom:1px solid var(--line);transition:background-color .18s ease}
.dense-row:last-child{border-bottom:0}
.dense-row:hover{background:#FBFBF7}
.dense-tag{display:inline-flex;justify-content:center;padding:5px 10px;border-radius:6px;background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:700;letter-spacing:.05em}
.dense-title{font-size:16.5px;font-weight:700}
.dense-desc{margin-top:6px;font-size:14.5px;color:var(--muted);line-height:1.65}
.dense-link{font-size:14px;font-weight:700;color:var(--brand);border-bottom:2px solid var(--accent);padding-bottom:2px;white-space:nowrap;transition:color .18s ease,border-color .18s ease}
.dense-link:hover{color:var(--orange-ink);border-color:var(--orange)}
@media (max-width:1023px){
  .anchor-nav{position:static;display:flex;gap:8px;overflow-x:auto;padding:10px;margin-bottom:24px;scrollbar-width:none}
  .anchor-nav::-webkit-scrollbar{display:none}
  .anchor-title,.anchor-foot{display:none}
  .anchor-link{white-space:nowrap;border-left:0;border-bottom:3px solid transparent;border-radius:var(--radius-pill);background:rgba(15,61,48,.05);padding:9px 16px}
  .anchor-link.is-current{border-bottom-color:var(--accent)}
}
@media (max-width:640px){
  .dense-row{grid-template-columns:1fr;gap:10px;padding:16px}
  .dense-link{justify-self:start}
  .dense-tag{justify-self:start}
}

/* ---------- 场景卡 ---------- */
.scene-grid{row-gap:var(--gap)}
.scene-card{height:100%;display:flex;flex-direction:column}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,#0F3D30,#0A2A21)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.scene-card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:clamp(20px,2.2vw,26px);display:flex;flex-direction:column;gap:12px;flex:1 1 auto}
.card-body h3{font-size:20px}
.card-body p{color:var(--muted);font-size:15.5px}

/* ---------- 流程 ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:var(--gap);counter-reset:flow}
.flow-step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:clamp(22px,2.4vw,30px);box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.flow-step:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(15,61,48,.3)}
.flow-step .step-num{display:inline-flex;font-size:13px;font-weight:800;letter-spacing:.16em;color:var(--orange)}
.flow-step h3{margin-top:12px;font-size:19px}
.flow-step p{margin-top:10px;color:var(--muted);font-size:15.5px}

/* ---------- 规格卡 ---------- */
.spec-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-1);overflow:hidden;height:100%}
.spec-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 20px;border-bottom:1px solid var(--line);background:#FBFBF7}
.spec-head b{font-size:16px}
.spec-list li{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px 20px;border-bottom:1px solid var(--line);font-size:15px}
.spec-list li:last-child{border-bottom:0}
.spec-list span{color:var(--muted)}
.spec-list b{font-weight:700;color:var(--text);text-align:right}

/* ---------- FAQ ---------- */
.accordion{border:0;background:transparent;margin:0}
.accordion .accordion-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-1);margin-bottom:14px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.accordion .accordion-item.is-active{border-color:rgba(15,61,48,.32);box-shadow:inset 3px 0 0 var(--accent),var(--shadow-1)}
.accordion .accordion-title{display:flex;align-items:center;gap:14px;padding:20px 60px 20px 22px;border:0;font-size:17px;font-weight:700;color:var(--text);line-height:1.5;transition:color .18s ease}
.accordion .accordion-title:hover{color:var(--brand)}
.accordion .accordion-title::before{content:"";position:absolute;right:26px;top:50%;width:10px;height:10px;margin-top:-7px;border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);transform:rotate(45deg);transition:transform .22s ease}
.accordion .accordion-item.is-active .accordion-title::before{transform:rotate(-135deg);margin-top:-4px}
.faq-num{font-size:13px;font-weight:800;letter-spacing:.1em;color:var(--orange);flex:0 0 auto}
.accordion .accordion-content{border:0;border-top:1px solid var(--line);padding:18px 22px 22px 58px;background:#FBFBF7}
.accordion .accordion-content p{color:var(--muted);font-size:15.5px;line-height:1.75;max-width:780px}
.accordion .accordion-content p + p{margin-top:10px}
@media (max-width:640px){
  .accordion .accordion-title{padding:18px 52px 18px 18px;font-size:16px}
  .accordion .accordion-content{padding:16px 18px 20px}
}

/* ---------- CTA 区 ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--brand-dark);color:var(--inverse);padding:clamp(48px,6vw,88px) 0}
.cta-band .cta-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.28}
.cta-band .cta-veil{position:absolute;inset:0;background:linear-gradient(96deg,rgba(10,42,33,.96),rgba(10,42,33,.7))}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:clamp(22px,3vw,48px);align-items:center;justify-content:space-between}
.cta-copy{max-width:640px}
.cta-copy h2{color:var(--inverse);font-size:clamp(24px,3vw,34px)}
.cta-copy p{margin-top:14px;color:rgba(242,244,239,.82);font-size:16.5px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.trust-row span{display:inline-flex;align-items:center;gap:7px;padding:7px 14px;border-radius:var(--radius-pill);border:1px solid rgba(242,244,239,.24);font-size:13px;color:rgba(242,244,239,.85)}
@media (max-width:640px){.cta-actions .btn{width:100%}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-dark);color:rgba(242,244,239,.76);padding:clamp(46px,5.4vw,76px) 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:clamp(22px,3vw,44px)}
.footer-col + .footer-col{border-left:1px solid rgba(255,255,255,.12);padding-left:clamp(18px,2.4vw,34px)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .logo-mark{width:34px;height:34px;background:var(--accent);color:var(--accent-ink)}
.footer-brand b{color:var(--inverse);font-size:17px;font-weight:800}
.footer-note{color:rgba(242,244,239,.7);line-height:1.8;max-width:420px}
.site-footer h4{color:var(--inverse);font-size:15px;margin-bottom:16px}
.site-footer ul{display:flex;flex-direction:column;gap:11px}
.site-footer ul a,.site-footer ul li{color:rgba(242,244,239,.72);transition:color .18s ease}
.site-footer ul a:hover{color:var(--accent)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;margin-top:clamp(32px,4vw,54px);padding:22px 0;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:rgba(242,244,239,.6)}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-col + .footer-col{border-left:0;padding-left:0}
}
@media (max-width:640px){.footer-grid{grid-template-columns:1fr}}

/* ---------- 动效 ---------- */
.fade-up{opacity:0;transform:translateY(12px);transition:opacity .24s ease-out,transform .24s ease-out}
.fade-up.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
  .fade-up{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --ink:#0F3D30;
  --ink-deep:#0A2A21;
  --accent:#D8F24B;
  --accent-deep:#c7e134;
  --orange:#FF5A36;
  --paper:#F7F6F1;
  --white:#ffffff;
  --text:#12181A;
  --muted:#5A6663;
  --line:#E3E3DC;
  --on-dark:#F2F4EF;
  --radius:14px;
  --radius-sm:12px;
  --pill:999px;
  --shadow-1:0 1px 2px rgba(11,43,34,.06),0 12px 32px -14px rgba(11,43,34,.16);
  --shadow-2:0 18px 40px -16px rgba(11,43,34,.26);
  --sec-y:clamp(56px,7vw,110px);
  --gap:clamp(20px,2.4vw,28px);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none}
a:hover{color:var(--ink-deep)}
button{font-family:inherit}
h1,h2,h3,h4{color:var(--text);margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.15}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
dl,dd,dt{margin:0}
::selection{background:var(--accent);color:var(--ink-deep)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto}
@media (min-width:1440px){.grid-container{max-width:1280px}}
@media (max-width:520px){.grid-container{padding-left:20px;padding-right:20px}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,246,241,.94);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.scrolled{box-shadow:0 10px 26px -20px rgba(11,43,34,.55)}
.header-inner{display:flex;align-items:center;gap:18px;height:76px;transition:height .2s ease}
.site-header.scrolled .header-inner{height:64px}
.brand{order:1;display:flex;align-items:center;gap:10px;white-space:nowrap;flex:0 0 auto}
.logo-mark{
  width:38px;height:38px;border-radius:11px;background:var(--ink);color:var(--accent);
  display:grid;place-items:center;font-weight:800;font-size:19px;
  box-shadow:0 8px 18px -10px rgba(11,43,34,.7);
}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-text b{font-size:18px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.16em}
.search-form{
  order:2;position:relative;display:flex;align-items:center;
  flex:1 1 200px;max-width:430px;margin:0 auto;
  background:var(--white);border:1px solid var(--line);border-radius:var(--pill);
  padding:4px 4px 4px 40px;transition:border-color .2s ease,box-shadow .2s ease;
}
.search-form .search-icon{position:absolute;left:14px;font-size:15px;color:var(--muted)}
.search-form input{
  flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;
  font-size:15px;color:var(--text);padding:9px 6px;line-height:1.4;
}
.search-form input::placeholder{color:#98a29e}
.search-form button{
  flex:0 0 auto;width:38px;height:38px;border:0;border-radius:var(--pill);
  background:var(--ink);color:#fff;display:grid;place-items:center;cursor:pointer;
  font-size:14px;transition:background .18s ease,transform .18s ease;
}
.search-form button:hover{background:var(--ink-deep)}
.search-form button:active{transform:scale(.96)}
.search-form:focus-within{border-color:var(--ink);box-shadow:0 0 0 3px rgba(216,242,75,.6)}
.nav-links{order:3;display:flex;align-items:center;gap:2px}
.nav-links a{
  display:inline-flex;align-items:center;height:38px;padding:0 10px;border-radius:10px;
  font-size:14px;font-weight:600;color:var(--muted);white-space:nowrap;
  transition:background .18s ease,color .18s ease;position:relative;
}
.nav-links a:hover{background:rgba(15,61,48,.07);color:var(--ink)}
.nav-links a.active{color:var(--ink);background:rgba(15,61,48,.09)}
.nav-links a.active::after{
  content:"";position:absolute;left:10px;right:10px;bottom:4px;height:2px;
  border-radius:2px;background:var(--accent);
}
.header-actions{order:4;display:flex;align-items:center;gap:10px}
.menu-toggle{
  order:5;display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:var(--white);color:var(--ink);font-size:17px;cursor:pointer;align-items:center;justify-content:center;
  transition:border-color .18s ease,background .18s ease;
}
.menu-toggle:hover{border-color:rgba(15,61,48,.35);background:#fff}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:700;line-height:1;padding:14px 24px;border-radius:var(--pill);
  border:1px solid transparent;cursor:pointer;text-decoration:none;white-space:nowrap;
  transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn .arrow{display:inline-block;transition:transform .18s ease;font-size:13px}
.btn:hover .arrow{transform:translateX(4px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:#0b3127;color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-accent{background:var(--accent);color:var(--ink-deep)}
.btn-accent:hover{background:var(--accent-deep);color:var(--ink-deep);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;border-color:rgba(242,244,239,.45);color:var(--on-dark)}
.btn-ghost:hover{background:rgba(242,244,239,.14);color:#fff;transform:translateY(-2px)}
.btn-ghost-dark{background:transparent;border-color:rgba(15,61,48,.28);color:var(--ink)}
.btn-ghost-dark:hover{background:rgba(15,61,48,.08);color:var(--ink);transform:translateY(-2px)}
.btn-sm{padding:11px 18px;font-size:14px}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;letter-spacing:.06em;
  padding:5px 10px;border-radius:6px;background:rgba(15,61,48,.08);color:var(--ink);
}
.badge-accent{background:var(--accent);color:var(--ink-deep)}
.badge-orange{background:rgba(255,90,54,.12);color:#c2401f}
.badge-outline{background:transparent;border:1px solid rgba(242,244,239,.35);color:var(--on-dark)}

/* ============ 分类页横幅 ============ */
.cat-hero{position:relative;overflow:hidden;background:var(--ink-deep);color:var(--on-dark);padding:48px 0 68px}
.cat-hero-bg{position:absolute;inset:0;overflow:hidden}
.cat-hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.4}
.cat-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(104deg,rgba(10,42,33,.95) 0%,rgba(10,42,33,.84) 44%,rgba(10,42,33,.42) 100%);
}
.cat-hero .grid-container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(242,244,239,.7);margin-bottom:26px;flex-wrap:wrap}
.breadcrumb a{color:rgba(242,244,239,.82)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:rgba(242,244,239,.6)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr);gap:44px;align-items:center}
.cat-hero h1{
  font-size:clamp(34px,4.8vw,60px);font-weight:800;line-height:1.08;letter-spacing:-.02em;
  color:#fff;margin:16px 0 0;
}
.hero-sub{
  margin-top:18px;font-size:clamp(16px,1.4vw,19px);line-height:1.7;
  color:rgba(242,244,239,.86);max-width:600px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-facts{display:flex;gap:34px;margin-top:40px;flex-wrap:wrap}
.hero-facts li{display:flex;flex-direction:column;gap:4px;position:relative;padding-left:16px}
.hero-facts li::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;background:var(--accent)}
.hero-facts b{font-size:24px;font-weight:800;color:#fff;letter-spacing:-.01em;line-height:1.2}
.hero-facts span{font-size:13px;color:rgba(242,244,239,.72)}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:20px;
  border:1px solid rgba(242,244,239,.18);box-shadow:0 34px 60px -30px rgba(0,0,0,.65);
}
.hero-media .hero-media-tag{
  position:absolute;left:14px;bottom:14px;background:var(--paper);color:var(--ink);
  font-size:12px;font-weight:700;padding:6px 12px;border-radius:var(--pill);
}

/* ============ 通用板块 ============ */
.section{padding:var(--sec-y) 0}
.section-head{max-width:720px;margin-bottom:clamp(32px,4vw,52px)}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  letter-spacing:.12em;color:var(--ink);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--accent)}
.section-head h2{font-size:clamp(26px,3vw,36px)}
.section-head p{margin-top:16px;color:var(--muted);font-size:16px;line-height:1.8}

/* ============ 系统要求 ============ */
.section-spec{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.spec-card{
  height:100%;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:clamp(22px,2.4vw,30px);box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.spec-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(15,61,48,.3)}
.spec-card header{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-bottom:16px;margin-bottom:8px;border-bottom:1px solid var(--line);
}
.spec-card h3{font-size:21px}
.spec-card dl>div{
  display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:12px 0;border-bottom:1px dashed var(--line);
}
.spec-card dl>div:last-child{border-bottom:0;padding-bottom:0}
.spec-card dt{color:var(--muted);font-size:15px;flex:0 0 auto}
.spec-card dd{font-size:15px;font-weight:600;color:var(--text);text-align:right;line-height:1.6}
.spec-note{
  margin-top:26px;background:var(--paper);border:1px solid var(--line);border-left:3px solid var(--accent);
  border-radius:var(--radius-sm);padding:16px 20px;color:var(--muted);font-size:15px;
}

/* ============ 安装步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--gap)}
.step{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(15,61,48,.3)}
.step .step-num{
  display:block;font-size:34px;font-weight:800;color:rgba(15,61,48,.16);letter-spacing:-.03em;line-height:1;
  margin-bottom:14px;
}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:15px;color:var(--muted);line-height:1.75}

/* ============ 下载区 ============ */
.section-download{position:relative;background:var(--ink-deep);color:var(--on-dark);overflow:hidden}
.section-download::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:linear-gradient(rgba(255,255,255,.9) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:48px 48px;
}
.section-download .grid-container{position:relative;z-index:2}
.section-download .section-head h2{color:#fff}
.section-download .section-head p{color:rgba(242,244,239,.76)}
.section-download .eyebrow{color:var(--accent)}
.download-grid{display:grid;grid-template-columns:minmax(0,1fr) 200px;gap:var(--gap);align-items:start}
.platform-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.platform-btn{
  display:flex;align-items:center;gap:14px;padding:16px 20px;border-radius:var(--radius);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);color:#fff;
  transition:background .18s ease,border-color .18s ease,transform .18s ease;
}
.platform-btn:hover{background:rgba(216,242,75,.12);border-color:rgba(216,242,75,.55);color:#fff;transform:translateY(-2px)}
.platform-btn:active{transform:translateY(0)}
.platform-btn .p-icon{
  flex:0 0 auto;width:42px;height:42px;border-radius:12px;background:rgba(255,255,255,.1);
  display:grid;place-items:center;font-size:18px;color:var(--accent);
}
.platform-btn .p-body{display:flex;flex-direction:column;gap:2px;min-width:0}
.platform-btn b{font-size:16px;font-weight:700}
.platform-btn span{font-size:13px;color:rgba(242,244,239,.66)}
.qr-box{
  background:var(--paper);border-radius:var(--radius);padding:20px;text-align:center;
  box-shadow:var(--shadow-2);
}
.qr-frame{
  width:140px;height:140px;margin:0 auto;border-radius:var(--radius-sm);background:#fff;
  border:1px solid var(--line);display:grid;place-items:center;color:var(--ink);font-size:56px;
}
.qr-box p{margin-top:14px;font-size:13px;color:var(--muted);line-height:1.6}
.download-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.download-tags li{
  font-size:13px;font-weight:600;color:var(--on-dark);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  padding:7px 14px;border-radius:var(--pill);
}

/* ============ 截图轮播 ============ */
.section-shots{background:var(--paper)}
.shots-track{
  display:flex;gap:var(--gap);overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 18px;scrollbar-width:none;-ms-overflow-style:none;
}
.shots-track::-webkit-scrollbar{display:none}
.shot{flex:0 0 clamp(220px,26vw,272px);margin:0;scroll-snap-align:center}
.device{
  background:var(--ink-deep);border-radius:24px;padding:10px;box-shadow:var(--shadow-2);
  transition:transform .22s ease;
}
.shot:hover .device{transform:translateY(-4px)}
.device img{width:100%;aspect-ratio:9/16;object-fit:cover;border-radius:16px;background:rgba(255,255,255,.06)}
.shot figcaption{
  margin-top:14px;font-size:14px;color:var(--muted);text-align:center;line-height:1.6;
}
.shots-dots{display:flex;justify-content:center;gap:10px;margin-top:6px}
.shots-dots button{
  width:10px;height:10px;border-radius:var(--pill);border:0;background:rgba(15,61,48,.2);
  cursor:pointer;padding:0;transition:background .2s ease,transform .2s ease;
}
.shots-dots button:hover{background:rgba(15,61,48,.42)}
.shots-dots button.active{background:var(--ink);transform:scale(1.25)}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px}
.faq-item{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-1);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(15,61,48,.28)}
.faq-item.open{border-color:rgba(15,61,48,.35);box-shadow:var(--shadow-2)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  background:transparent;border:0;cursor:pointer;padding:20px 22px;font-size:16px;
  font-weight:700;color:var(--text);line-height:1.6;
}
.faq-q .faq-num{
  flex:0 0 auto;font-size:13px;font-weight:800;color:var(--ink);
  background:rgba(15,61,48,.08);border-radius:6px;padding:4px 8px;letter-spacing:.04em;
}
.faq-q .faq-text{flex:1 1 auto}
.faq-q i{font-size:14px;color:var(--muted);transition:transform .22s ease}
.faq-item.open .faq-q i{transform:rotate(180deg);color:var(--ink)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease}
.faq-a p{
  padding:0 22px 22px 76px;color:var(--muted);font-size:15px;line-height:1.8;
  border-left:3px solid transparent;
}
.faq-item.open .faq-a p{border-left-color:var(--accent)}

/* ============ CTA 条 ============ */
.cta-band{background:var(--ink);color:var(--on-dark);padding:clamp(48px,6vw,84px) 0}
.cta-band .cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:clamp(24px,2.8vw,34px);max-width:620px}
.cta-band p{margin-top:14px;color:rgba(242,244,239,.78);font-size:16px;max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-deep);color:rgba(242,244,239,.82);padding:clamp(52px,6vw,84px) 0 0}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:0;
}
.footer-col{padding:0 26px;border-left:1px solid rgba(255,255,255,.12)}
.footer-col:first-child{border-left:0;padding-left:0}
.footer-col:last-child{padding-right:0}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .logo-mark{background:var(--accent);color:var(--ink-deep);box-shadow:none}
.footer-brand b{color:#fff;font-size:17px;font-weight:800;letter-spacing:-.01em}
.footer-note{font-size:14px;line-height:1.85;color:rgba(242,244,239,.7);max-width:340px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;color:rgba(242,244,239,.7)}
.footer-col a{color:rgba(242,244,239,.78);font-size:14px;transition:color .18s ease}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:clamp(36px,4vw,56px);border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 28px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(242,244,239,.6);
}

/* ============ 动效 ============ */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .24s ease-out,transform .24s ease-out}
.js .reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .js .reveal{opacity:1;transform:none}
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .header-inner{height:auto;flex-wrap:wrap;gap:12px;padding:12px 0}
  .site-header.scrolled .header-inner{height:auto}
  .brand{order:1}
  .menu-toggle{order:2;display:flex;margin-left:auto}
  .header-actions{order:3}
  .search-form{order:4;flex:1 1 100%;max-width:none;margin:0}
  .nav-links{
    order:5;flex:1 1 100%;flex-direction:column;align-items:stretch;gap:4px;
    display:none;padding-top:6px;border-top:1px solid var(--line);margin-top:4px;
  }
  .site-header.nav-open .nav-links{display:flex}
  .nav-links a{height:46px;border-radius:12px;font-size:15px;padding:0 14px;justify-content:flex-start}
  .nav-links a.active::after{left:14px;right:auto;width:26px;bottom:8px}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .hero-media{order:-1}
  .hero-media img{aspect-ratio:16/9}
  .download-grid{grid-template-columns:minmax(0,1fr)}
  .qr-box{display:flex;align-items:center;gap:20px;text-align:left}
  .qr-frame{flex:0 0 auto;margin:0}
  .qr-box p{margin-top:0}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 0}
  .footer-col{padding:0 22px}
  .footer-col:nth-child(odd){border-left:0;padding-left:0}
}
@media (max-width:767px){
  body{font-size:16px}
  .cat-hero{padding:32px 0 52px}
  .hero-actions{gap:12px}
  .hero-actions .btn{flex:1 1 100%}
  .hero-facts{gap:22px}
  .hero-facts b{font-size:20px}
  .platform-list{grid-template-columns:minmax(0,1fr)}
  .spec-card dl>div{flex-direction:column;gap:4px}
  .spec-card dd{text-align:left}
  .faq-q{padding:18px;gap:12px;font-size:15px}
  .faq-a p{padding:0 18px 20px 18px}
  .cta-actions .btn{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr;gap:0}
  .footer-col{border-left:0;padding:0;margin-bottom:28px}
  .footer-col:last-child{margin-bottom:0}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:519px){
  .steps{grid-template-columns:minmax(0,1fr)}
  .qr-box{flex-direction:column;text-align:center}
  .qr-box p{margin-top:12px}
  .shot{flex:0 0 78vw}
}

/* roulang page: category4 */
:root{
  --ink:#0F3D30;
  --ink-deep:#0A2A21;
  --accent:#D8F24B;
  --accent-soft:#E9F98C;
  --orange:#FF5A36;
  --paper:#F7F6F1;
  --white:#FFFFFF;
  --text:#12181A;
  --text-2:#3D4A46;
  --muted:#5A6663;
  --line:#E3E3DC;
  --line-strong:rgba(15,61,48,.30);
  --radius:14px;
  --radius-sm:12px;
  --shadow-sm:0 1px 2px rgba(11,43,34,.06), 0 12px 32px -14px rgba(11,43,34,.16);
  --shadow-lg:0 18px 40px -16px rgba(11,43,34,.26);
  --container:1200px;
  --gap:24px;
  --section:96px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink);text-decoration:none;transition:color .18s ease,background-color .18s ease,box-shadow .18s ease}
a:hover{color:var(--orange)}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.16;color:var(--text)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer}
svg{display:block}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--ink);
  outline-offset:2px;
  border-radius:8px;
  box-shadow:0 0 0 3px rgba(216,242,75,.75);
}
.button,button.button{background:var(--ink);color:#fff;border-radius:999px;border:0}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}
@media (max-width:520px){.container{padding:0 20px}}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  border:0;border-radius:999px;padding:13px 24px;
  font-size:15px;font-weight:700;line-height:1;
  text-decoration:none;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn:active{transform:translateY(0)}
.btn .arr{transition:transform .18s ease}
.btn:hover .arr{transform:translateX(4px)}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--ink-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-accent{background:var(--accent);color:var(--ink-deep)}
.btn-accent:hover{background:var(--accent-soft);color:var(--ink-deep);transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1px rgba(15,61,48,.35)}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-on-dark{background:transparent;color:#F2F4EF;box-shadow:inset 0 0 0 1px rgba(242,244,239,.42)}
.btn-on-dark:hover{background:#F2F4EF;color:var(--ink-deep);transform:translateY(-2px)}
.btn-lg{padding:16px 30px;font-size:16px}
.btn-block{width:100%}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,246,241,.94);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  --header-h:76px;
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{--header-h:64px;box-shadow:0 10px 30px -22px rgba(11,43,34,.55)}
.header-row{display:flex;align-items:center;gap:18px;height:var(--header-h);transition:height .25s ease}

.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand:hover{color:inherit}
.logo-mark{
  width:38px;height:38px;flex:none;border-radius:11px;
  background:var(--ink);color:var(--accent);
  display:grid;place-items:center;
  font-size:18px;font-weight:800;letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.08}
.brand-text b{font-size:16px;font-weight:800;color:var(--text);letter-spacing:-.01em}
.brand-text i{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.18em}

.search{
  position:relative;display:flex;align-items:center;gap:10px;
  flex:1 1 auto;min-width:0;max-width:520px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:6px 6px 6px 16px;
  transition:border-color .2s ease,box-shadow .3s ease;
}
.search:focus-within{border-color:var(--ink);box-shadow:0 0 0 3px rgba(216,242,75,.6)}
.search .s-icon{flex:none;color:var(--muted)}
.search input{
  flex:1;min-width:0;border:0;background:transparent;outline:0;
  font-size:15px;padding:8px 0;color:var(--text);
}
.search input::placeholder{color:#98A39E}
.search button{
  flex:none;border:0;border-radius:999px;background:var(--ink);color:#fff;
  padding:9px 18px;font-size:14px;font-weight:700;
  transition:background-color .18s ease,transform .18s ease;
}
.search button:hover{background:var(--ink-deep);transform:translateY(-1px)}

.nav-bar{
  display:flex;align-items:center;
  height:47px;border-top:1px solid var(--line);
  overflow-x:auto;scrollbar-width:none;
}
.nav-bar::-webkit-scrollbar{display:none}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;display:inline-block;white-space:nowrap;
  font-size:15px;font-weight:600;color:#4A5551;
  padding:8px 14px;border-radius:999px;
  transition:color .18s ease,background-color .18s ease;
}
.nav-links a:hover{color:var(--ink);background:rgba(15,61,48,.07)}
.nav-links a.active{background:var(--ink);color:#fff}
.nav-links a.active:hover{background:var(--ink-deep);color:#fff}

.nav-cta{flex:none}
.nav-toggle{
  display:none;flex:none;
  width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:#fff;color:var(--ink);
  align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--line-strong)}

.nav-mask{
  position:fixed;inset:0;background:rgba(10,42,33,.5);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:90;
}
.nav-mask.open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(330px,86vw);
  background:#fff;z-index:100;padding:22px 22px 30px;
  transform:translateX(100%);transition:transform .28s ease;
  display:flex;flex-direction:column;gap:8px;
  box-shadow:-20px 0 50px -24px rgba(11,43,34,.5);
  overflow-y:auto;
}
.nav-drawer.open{transform:translateX(0)}
.nav-drawer h3{font-size:13px;letter-spacing:.14em;color:var(--muted);font-weight:700;margin:8px 0 6px}
.nav-drawer a{
  display:block;padding:13px 14px;border-radius:12px;
  font-size:16px;font-weight:600;color:var(--text-2);
}
.nav-drawer a:hover{background:var(--paper);color:var(--ink)}
.nav-drawer a.active{background:var(--ink);color:#fff}

/* ============ 分类头图区 ============ */
.page-hero{
  position:relative;overflow:hidden;isolation:isolate;
  background:var(--ink-deep);color:#F2F4EF;
  padding:56px 0 72px;
}
.hero-bg{
  position:absolute;inset:0;z-index:-2;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.40;
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px) 0 0/72px 72px,
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px) 0 0/72px 72px,
    linear-gradient(118deg,rgba(10,42,33,.97) 0%,rgba(10,42,33,.88) 42%,rgba(15,61,48,.62) 100%);
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(242,244,239,.68);margin-bottom:24px;
}
.breadcrumb a{color:rgba(242,244,239,.86)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{opacity:.45}
.breadcrumb .cur{color:rgba(242,244,239,.62)}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(216,242,75,.14);color:var(--accent);
  border:1px solid rgba(216,242,75,.35);
  border-radius:999px;padding:6px 14px;
  font-size:13px;font-weight:700;letter-spacing:.06em;
}
.page-hero h1{
  margin-top:20px;
  font-size:clamp(34px,5.2vw,64px);
  line-height:1.06;color:#fff;letter-spacing:-.025em;
}
.hero-sub{
  margin-top:18px;max-width:660px;
  font-size:clamp(16px,1.6vw,19px);
  color:rgba(242,244,239,.84);line-height:1.7;
}
.hero-search{max-width:640px;margin-top:30px}
.hero-search .search{max-width:none;border-color:transparent;padding:8px 8px 8px 20px}
.hero-search .search input{font-size:16px;padding:10px 0}
.hero-search .search button{padding:12px 24px;font-size:15px}
.hot-terms{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:18px;font-size:13px;color:rgba(242,244,239,.62);
}
.hot-terms a{
  color:rgba(242,244,239,.9);
  border:1px solid rgba(255,255,255,.22);
  border-radius:999px;padding:5px 13px;font-size:13px;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.hot-terms a:hover{background:var(--accent);border-color:var(--accent);color:var(--ink-deep)}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:14px 40px;margin-top:36px;
  padding-top:26px;border-top:1px solid rgba(255,255,255,.14);
}
.hero-stats div{display:flex;flex-direction:column;gap:2px}
.hero-stats b{font-size:24px;font-weight:800;color:var(--accent);line-height:1.1}
.hero-stats span{font-size:13px;color:rgba(242,244,239,.66)}

/* ============ 通用板块 ============ */
.section{padding:var(--section) 0}
.section-tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:46px}
.section-head h2{font-size:clamp(26px,3vw,36px)}
.section-head p{margin-top:16px;color:var(--muted);font-size:16px;line-height:1.8}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--ink);
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:24px;height:3px;border-radius:2px;background:var(--accent)}
.section-dark{
  position:relative;overflow:hidden;
  background:var(--ink-deep);color:#EDF1EB;
}
.section-dark::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px) 0 0/76px 76px,
    linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px) 0 0/76px 76px;
}
.section-dark > .container{position:relative;z-index:1}
.section-dark .section-head h2{color:#fff}
.section-dark .section-head p{color:rgba(237,241,235,.72)}
.section-dark .eyebrow{color:var(--accent)}

/* ============ 问题分组卡 ============ */
.group-card{
  display:flex;flex-direction:column;gap:14px;
  height:100%;padding:28px 26px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.group-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-lg);
}
.group-num{
  font-size:15px;font-weight:800;letter-spacing:.1em;color:var(--orange);
}
.group-card h3{font-size:19px}
.group-card p{font-size:15px;color:var(--muted);line-height:1.8}
.group-card .link{
  margin-top:auto;display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:700;color:var(--ink);
}
.group-card .link:hover{color:var(--orange)}
.group-card .link:hover .arr{transform:translateX(4px)}
.group-card .link .arr{transition:transform .18s ease}

/* ============ FAQ 手风琴 ============ */
.qa-col{display:flex;flex-direction:column;gap:16px}
.qa-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
  transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.qa-item:hover{border-color:var(--line-strong);box-shadow:var(--shadow-lg)}
.qa-item summary{
  display:flex;align-items:flex-start;gap:14px;
  padding:20px 22px;cursor:pointer;list-style:none;
  transition:background-color .18s ease;
}
.qa-item summary::-webkit-details-marker{display:none}
.qa-item summary::marker{content:""}
.qa-num{
  flex:none;padding-top:3px;
  font-size:13px;font-weight:800;letter-spacing:.08em;color:var(--orange);
}
.qa-q{
  flex:1;font-size:16.5px;font-weight:700;color:var(--text);line-height:1.55;
}
.qa-arrow{
  flex:none;width:9px;height:9px;margin-top:8px;
  border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);
  transform:rotate(45deg);
  transition:transform .22s ease;
}
.qa-item[open] .qa-arrow{transform:rotate(-135deg)}
.qa-item[open]{border-color:var(--line-strong)}
.qa-a{
  position:relative;
  padding:0 24px 22px 56px;
  font-size:15px;color:var(--muted);line-height:1.85;
  animation:qaIn .22s ease-out;
}
.qa-a::before{
  content:"";position:absolute;left:24px;top:2px;bottom:24px;width:3px;
  border-radius:2px;background:var(--accent);
}
@keyframes qaIn{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:none}}

/* ============ 排查步骤 ============ */
.step{
  height:100%;padding:32px 26px;
  background:rgba(255,255,255,.055);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius);
  transition:background-color .22s ease,transform .22s ease,border-color .22s ease;
}
.step:hover{background:rgba(255,255,255,.09);border-color:rgba(216,242,75,.4);transform:translateY(-4px)}
.step .idx{font-size:44px;font-weight:900;line-height:1;color:rgba(216,242,75,.55);letter-spacing:-.03em}
.step h3{margin-top:14px;font-size:20px;color:#fff}
.step p{margin-top:12px;font-size:15px;color:rgba(237,241,235,.72);line-height:1.8}

/* ============ 图文安全区 ============ */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.split-media{position:relative;border-radius:18px;overflow:hidden;box-shadow:var(--shadow-lg)}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .35s ease}
.split-media:hover img{transform:scale(1.03)}
.split-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,42,33,0) 45%,rgba(10,42,33,.55) 100%);
}
.check-list{display:flex;flex-direction:column;gap:18px;margin-top:30px}
.check-list li{display:flex;gap:14px;align-items:flex-start}
.check-list .tick{
  flex:none;width:24px;height:24px;margin-top:3px;border-radius:8px;
  background:var(--accent);color:var(--ink-deep);
  display:grid;place-items:center;font-size:13px;font-weight:900;
}
.check-list b{display:block;font-size:16px;font-weight:700;color:var(--text)}
.check-list span{display:block;margin-top:4px;font-size:15px;color:var(--muted);line-height:1.8}

/* ============ 底部 CTA 长横幅 ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink-deep);color:#EDF1EB;
  border-radius:22px;padding:66px 48px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px) 0 0/68px 68px,
    linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px) 0 0/68px 68px;
}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;
  background:repeating-linear-gradient(135deg,rgba(216,242,75,.16) 0 8px,transparent 8px 22px);
  border-radius:50%;pointer-events:none;
}
.cta-inner{position:relative;z-index:1;max-width:720px}
.cta-inner h2{font-size:clamp(26px,3.2vw,40px);color:#fff;line-height:1.18}
.cta-inner p{margin-top:18px;font-size:16px;color:rgba(237,241,235,.76);line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.cta-note{margin-top:22px;font-size:13px;color:rgba(237,241,235,.55)}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-deep);color:#CBD6CE;padding:76px 0 0;font-size:14px;margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:0;
}
.footer-col{padding:0 30px;border-left:1px solid rgba(255,255,255,.12)}
.footer-col:first-child{border-left:0;padding-left:0}
.footer-col:last-child{padding-right:0}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px}
.footer-brand .logo-mark{background:var(--accent);color:var(--ink-deep)}
.footer-brand b{font-weight:800;letter-spacing:-.01em}
.footer-note{margin-top:16px;color:rgba(203,214,206,.78);line-height:1.85;max-width:360px}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:18px;letter-spacing:.05em;font-weight:700}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col li, .footer-col a{color:rgba(203,214,206,.82);line-height:1.7}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:rgba(203,214,206,.62);
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  :root{--section:72px}
  .header-row{flex-wrap:wrap;height:auto;padding:12px 0;gap:12px}
  .brand{order:1;flex:1 1 auto}
  .brand-text b{font-size:15px}
  .nav-cta{order:2;padding:11px 16px;font-size:14px}
  .nav-toggle{order:3;display:inline-flex}
  .search{order:4;flex:1 0 100%;max-width:none;margin-top:2px}
  .nav-bar{display:none}
  .split{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px 0}
  .footer-col{padding:0 24px}
  .footer-col:nth-child(3){border-left:0;padding-left:0}
  .footer-col:nth-child(1){grid-column:1/-1;border-left:0;padding-left:0}
  .footer-note{max-width:none}
  .cta-band{padding:48px 30px;border-radius:18px}
}
@media (max-width:767px){
  :root{--section:56px}
  body{font-size:16px}
  .nav-cta{padding:10px 14px;font-size:13.5px}
  .hero-stats{gap:14px 28px}
  .hero-stats b{font-size:20px}
  .qa-item summary{padding:18px 18px}
  .qa-a{padding:0 20px 20px 46px}
  .qa-a::before{left:18px}
  .cta-band{padding:40px 22px}
  .cta-actions .btn{width:100%}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .footer-col{padding:0;border-left:0}
  .footer-col + .footer-col{margin-top:34px}
  .brand-text i{letter-spacing:.12em}
  .hot-terms{gap:8px}
  .hot-terms a{padding:5px 11px;font-size:12.5px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}
/* Foundation 覆写兜底 */
.grid-margin-x{margin-left:-.9375rem;margin-right:-.9375rem}
.grid-margin-x > .cell{margin-left:.9375rem;margin-right:.9375rem}
.grid-margin-y{margin-top:-.9375rem;margin-bottom:-.9375rem}
.grid-margin-y > .cell{margin-top:.9375rem;margin-bottom:.9375rem}