/* roulang page: index */
:root{
  --ink:#14201F;
  --ink-2:#1C2A28;
  --orange:#E1662F;
  --orange-d:#C9551F;
  --cyan:#17A08A;
  --cyan-l:#E6F2EF;
  --bg:#F5F6F3;
  --card:#FFFFFF;
  --text:#2A3230;
  --muted:#6B7672;
  --ink-text:#EDEFEA;
  --ink-muted:#A8B3AF;
  --line:#E3E6E1;
  --line-ink:rgba(255,255,255,.10);
  --ok:#2E8B62;
  --warn:#C9852A;
  --err:#C0453B;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh:0 1px 2px rgba(20,32,31,.06),0 8px 24px -12px rgba(20,32,31,.14);
  --sh-h:0 12px 32px -12px rgba(20,32,31,.22);
  --ff:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  --fm:'SF Mono',Consolas,'Courier New',monospace;
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--ff);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;background:linear-gradient(135deg,#ECEEEA,#F5F6F3);}
a{color:var(--ink);text-decoration:none;transition:color .18s ease;}
a:hover,a:focus{color:var(--orange);}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;letter-spacing:-.02em;line-height:1.2;}
h1{font-size:clamp(34px,4.4vw,56px);line-height:1.15;}
h2{font-size:clamp(26px,3vw,38px);line-height:1.2;}
h3{font-size:clamp(20px,2vw,24px);line-height:1.3;}
h4{font-size:clamp(17px,1.5vw,19px);line-height:1.35;}
p{margin:0 0 1.6em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.mono{font-family:var(--fm);font-variant-numeric:tabular-nums;letter-spacing:0;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.container-wide{max-width:1280px;}
section{position:relative;}
.sec{padding:var(--sec) 0;}
.sec-tight{padding:calc(var(--sec) - 24px) 0;}
.sec-head{margin-bottom:32px;max-width:760px;}
.sec-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.12em;
  color:var(--cyan);text-transform:uppercase;margin-bottom:14px;
}
.sec-head .eyebrow::before{content:"";width:22px;height:2px;background:var(--cyan);display:block;}
.sec-head p{color:var(--muted);font-size:16px;margin:16px 0 0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);
  font-size:14px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;line-height:1.2;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  min-height:44px;
}
.btn:active{transform:scale(.98);}
.btn-solid{background:var(--orange);color:#fff;box-shadow:0 8px 20px -12px rgba(225,102,47,.9);}
.btn-solid:hover,.btn-solid:focus{background:var(--orange-d);color:#fff;transform:translateY(-1px);box-shadow:0 14px 26px -14px rgba(201,85,31,.95);}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover,.btn-ghost:focus{border-color:var(--orange);color:var(--orange);}
.btn-line{background:transparent;color:var(--ink-text);border-color:rgba(255,255,255,.28);}
.btn-line:hover,.btn-line:focus{border-color:var(--orange);color:#fff;background:rgba(255,255,255,.06);}
.btn-lg{padding:15px 28px;font-size:15px;}
.btn-sm{padding:9px 16px;font-size:13px;min-height:38px;}
.btn-block{width:100%;}
.btn:focus-visible{outline:2px solid var(--orange);outline-offset:3px;}

/* ---------- 标签 / 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;line-height:1.6;
}
.badge-cyan{background:var(--cyan-l);color:#0F6E60;border:1px solid rgba(23,160,138,.24);}
.badge-orange{background:#FBEDE6;color:#B74E1D;border:1px solid rgba(225,102,47,.26);}
.badge-ink{background:rgba(255,255,255,.08);color:var(--ink-text);border:1px solid var(--line-ink);}

/* ---------- 导航 ---------- */
.site-head{
  position:sticky;top:0;z-index:80;
  background:rgba(245,246,243,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:background .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.site-head.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:0 6px 20px -16px rgba(20,32,31,.5);}
.head-inner{display:flex;align-items:center;gap:34px;height:72px;transition:height .2s ease;}
.site-head.is-scrolled .head-inner{height:64px;}
.logo{font-size:20px;font-weight:800;letter-spacing:0;color:var(--ink);white-space:nowrap;display:inline-flex;align-items:center;gap:8px;}
.logo:hover{color:var(--ink);}
.logo .logo-mark{
  width:30px;height:30px;border-radius:9px;background:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:12px;font-weight:800;
  font-family:var(--fm);flex:none;
}
.logo em{font-style:normal;color:var(--orange);}
.head-nav{display:flex;align-items:center;gap:28px;}
.head-nav a{
  position:relative;font-size:14px;font-weight:500;color:var(--text);
  padding:6px 0;white-space:nowrap;
}
.head-nav a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;
  background:var(--orange);transition:width .2s ease;
}
.head-nav a:hover{color:var(--ink);}
.head-nav a:hover::after,.head-nav a.active::after{width:100%;}
.head-nav a.active{color:var(--ink);font-weight:600;}
.head-nav a.active::before{
  content:"";position:absolute;left:50%;top:-8px;transform:translateX(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--orange);
}
.head-cta{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;margin-left:auto;width:46px;height:46px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--ink);font-size:17px;cursor:pointer;
}
.nav-toggle:focus-visible{outline:2px solid var(--orange);outline-offset:2px;}

.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(88vw,360px);z-index:100;
  background:#fff;box-shadow:-20px 0 50px -24px rgba(20,32,31,.5);
  transform:translateX(102%);transition:transform .28s cubic-bezier(.2,.7,.2,1);
  display:flex;flex-direction:column;padding:20px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:#fff;font-size:16px;cursor:pointer;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;flex:1;}
.drawer-nav a{
  display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--text);
}
.drawer-nav a.active{background:var(--cyan-l);color:#0F6E60;font-weight:600;}
.drawer-foot{padding-top:16px;border-top:1px solid var(--line);}
.scrim{position:fixed;inset:0;background:rgba(20,32,31,.42);opacity:0;visibility:hidden;transition:opacity .2s ease;z-index:90;}
.scrim.is-open{opacity:1;visibility:visible;}

/* ---------- Hero ---------- */
.hero{padding:76px 0 88px;overflow:hidden;background:var(--bg);}
.hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity:.07;pointer-events:none;
}
.hero-lines{
  position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:linear-gradient(90deg,rgba(23,160,138,.07) 1px,transparent 1px);
  background-size:36px 100%;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 78%);
}
.hero-inner{position:relative;z-index:2;}
.hero-grid{align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;
  padding:7px 15px 7px 11px;border-radius:999px;background:#fff;
  border:1px solid var(--line);box-shadow:var(--sh);
  font-size:13px;font-weight:600;color:var(--ink);margin-bottom:22px;
}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(23,160,138,.14);}
.hero h1{margin-bottom:20px;}
.hero h1 em{font-style:normal;color:var(--orange);}
.hero-sub{font-size:clamp(16px,1.7vw,19px);color:var(--muted);line-height:1.7;max-width:34em;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:0 40px;
  border-top:1px solid var(--line);padding-top:20px;
}
.hero-facts li{display:flex;flex-direction:column;gap:2px;padding:6px 0;}
.hero-facts .k{font-size:12px;color:var(--muted);letter-spacing:.06em;}
.hero-facts b{font-size:19px;font-weight:700;color:var(--ink);font-family:var(--fm);}
.hero-shot{
  position:relative;transform:rotate(-2deg);
  border-radius:var(--r-card);overflow:hidden;background:#fff;
  border:1px solid var(--line);
  box-shadow:0 30px 60px -26px rgba(20,32,31,.45);
}
.hero-shot img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero-shot::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:40%;
  background:linear-gradient(180deg,transparent,rgba(20,32,31,.22));pointer-events:none;
}

/* ---------- 功能价值区 ---------- */
.value{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.value-left h2{margin-bottom:18px;}
.value-left p{color:var(--muted);font-size:16px;}
.value-list{border-top:1px solid var(--line);}
.value-item{
  position:relative;display:grid;grid-template-columns:64px 1fr;gap:18px;
  padding:22px 8px 22px 0;border-bottom:1px solid var(--line);
  transition:transform .18s ease;
}
.value-item::before{
  content:"";position:absolute;left:-14px;top:22px;bottom:22px;width:3px;
  background:var(--orange);border-radius:2px;opacity:0;transition:opacity .18s ease;
}
.value-item:hover{transform:translateX(4px);}
.value-item:hover::before{opacity:1;}
.value-num{font-family:var(--fm);font-size:15px;font-weight:700;color:var(--cyan);letter-spacing:.04em;padding-top:5px;}
.value-item h4{margin-bottom:6px;}
.value-item p{color:var(--muted);font-size:15px;line-height:1.75;margin:0;}

/* ---------- 截图轮播 ---------- */
.shots{background:var(--bg);}
.shot-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px;flex-wrap:wrap;}
.shot-nav{display:flex;gap:10px;}
.shot-arrow{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:#fff;
  color:var(--ink);cursor:pointer;font-size:15px;transition:all .18s ease;
}
.shot-arrow:hover{border-color:var(--orange);color:var(--orange);}
.shot-arrow:focus-visible{outline:2px solid var(--orange);outline-offset:2px;}
.shot-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 22px;scrollbar-width:none;
}
.shot-track::-webkit-scrollbar{display:none;}
.shot-card{
  flex:0 0 clamp(320px,42vw,480px);scroll-snap-align:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh);transition:box-shadow .18s ease,transform .18s ease;
}
.shot-card:hover{transform:translateY(-2px);box-shadow:var(--sh-h);}
.shot-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.shot-cap{padding:16px 20px 20px;}
.shot-cap h4{margin-bottom:6px;font-size:17px;}
.shot-cap p{margin:0;color:var(--muted);font-size:14px;line-height:1.7;}
.shot-dots{display:flex;gap:8px;justify-content:center;margin-top:4px;}
.shot-dots button{
  width:9px;height:9px;border-radius:999px;border:0;background:#CFD6D1;cursor:pointer;
  padding:0;transition:all .2s ease;
}
.shot-dots button.on{background:var(--orange);width:24px;}
.shot-dots button:focus-visible{outline:2px solid var(--orange);outline-offset:3px;}

/* ---------- 系统要求 ---------- */
.req{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.req-pills{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px;}
.req-pills span{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:999px;background:var(--cyan-l);
  border:1px solid rgba(23,160,138,.24);color:#0F6E60;
  font-size:13px;font-weight:600;
}
.req-list{
  display:grid;grid-template-columns:240px 1fr;
  border-top:1px solid var(--line);
}
.req-list dt{
  padding:16px 0;font-size:14px;color:var(--muted);font-weight:500;
  border-bottom:1px solid var(--line);
}
.req-list dd{
  margin:0;padding:16px 0;font-size:15px;color:var(--text);
  border-bottom:1px solid var(--line);font-family:var(--fm);
  font-variant-numeric:tabular-nums;
}
.req-note{
  margin-top:24px;padding:16px 20px;border-radius:var(--r-card);
  background:var(--cyan-l);border-left:3px solid var(--cyan);
  font-size:14px;color:#215B52;line-height:1.75;
}

/* ---------- 下载按钮组 ---------- */
.download{background:var(--bg);}
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.dl-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh);display:flex;flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.dl-card:hover{transform:translateY(-2px);box-shadow:var(--sh-h);}
.dl-card.recommend{border-color:var(--orange);}
.dl-card .rec{
  position:absolute;top:-1px;right:18px;
  background:var(--orange);color:#fff;font-size:11px;font-weight:700;letter-spacing:.06em;
  padding:5px 12px;border-radius:0 0 8px 8px;
}
.dl-icon{
  width:46px;height:46px;border-radius:12px;background:var(--ink);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:19px;margin-bottom:16px;
}
.dl-card h4{margin-bottom:14px;}
.dl-meta{display:flex;flex-direction:column;gap:8px;margin-bottom:20px;}
.dl-meta div{display:flex;justify-content:space-between;font-size:13px;color:var(--muted);border-bottom:1px dashed var(--line);padding-bottom:7px;}
.dl-meta b{font-family:var(--fm);color:var(--text);font-weight:600;}
.dl-card .btn{margin-top:auto;}

/* ---------- 评价墙 ---------- */
.reviews{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.rev-cols{columns:3;column-gap:20px;}
.rev-card{
  position:relative;break-inside:avoid;margin:0 0 20px;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh);
}
.rev-card::after{
  content:"”";position:absolute;top:6px;right:18px;
  font-size:56px;line-height:1;color:rgba(20,32,31,.06);font-family:Georgia,serif;
}
.rev-top{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.rev-avatar{
  width:40px;height:40px;border-radius:50%;flex:none;
  background:var(--cyan-l);color:#0F6E60;border:1px solid rgba(23,160,138,.26);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;
}
.rev-name{font-size:15px;font-weight:700;color:var(--ink);line-height:1.4;}
.rev-role{font-size:12px;color:var(--muted);}
.rev-star{color:var(--orange);font-size:12px;letter-spacing:2px;margin-bottom:10px;}
.rev-card p{font-size:14px;line-height:1.8;color:var(--text);margin:0;}

/* ---------- 最新信息 CMS ---------- */
.news{background:var(--bg);}
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap;}
.news-head .link-more{font-size:14px;font-weight:600;color:var(--orange);display:inline-flex;align-items:center;gap:6px;}
.news-layout{display:grid;grid-template-columns:1.25fr 1fr;gap:24px;}
.news-main{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh);transition:transform .18s ease,box-shadow .18s ease;
}
.news-main:hover{transform:translateY(-2px);box-shadow:var(--sh-h);}
.news-main img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.news-main .nm-body{padding:22px 24px 24px;}
.news-main h3{margin:14px 0 10px;font-size:clamp(19px,2vw,23px);}
.news-main p{color:var(--muted);font-size:15px;line-height:1.75;margin:0 0 14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--muted);}
.news-meta .read{color:var(--orange);font-weight:600;margin-left:auto;}
.news-side{display:flex;flex-direction:column;gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:6px 22px;box-shadow:var(--sh);}
.news-row{
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:14px;
  padding:16px 0;border-bottom:1px solid var(--line);transition:transform .18s ease;
}
.news-row:last-child{border-bottom:0;}
.news-row:hover{transform:translateX(4px);}
.news-row h4{font-size:15px;font-weight:600;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-row .date{font-family:var(--fm);font-size:12px;color:var(--muted);white-space:nowrap;}
.news-empty{
  grid-column:1/-1;text-align:center;padding:56px 24px;
  border:1px dashed #CBD3CE;border-radius:var(--r-card);color:var(--muted);background:#fff;
}
.news-empty i{display:block;font-size:24px;color:var(--cyan);margin-bottom:12px;animation:spin 3.2s linear infinite;}
@keyframes spin{to{transform:rotate(360deg);}}

/* ---------- FAQ ---------- */
.faq{background:#fff;border-top:1px solid var(--line);}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:transparent;border:0;text-align:left;cursor:pointer;
  padding:22px 4px;font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
  transition:color .18s ease;
}
.faq-q:hover{color:var(--orange);}
.faq-q:focus-visible{outline:2px solid var(--orange);outline-offset:-2px;}
.faq-q .sign{
  flex:none;width:20px;height:20px;position:relative;
}
.faq-q .sign::before,.faq-q .sign::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.faq-q .sign::before{width:14px;height:2px;transform:translate(-50%,-50%);}
.faq-q .sign::after{width:2px;height:14px;transform:translate(-50%,-50%);}
.faq-item.is-open .faq-q{color:var(--orange);}
.faq-item.is-open .sign::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-item.is-open .faq-a{max-height:420px;}
.faq-a-inner{
  padding:0 4px 24px;font-size:15px;line-height:1.85;color:var(--muted);
  opacity:0;transition:opacity .2s ease .05s;max-width:60em;
}
.faq-item.is-open .faq-a-inner{opacity:1;}

/* ---------- CTA 条 ---------- */
.cta-bar{
  background:var(--ink);color:var(--ink-text);border-radius:0;position:relative;overflow:hidden;
}
.cta-bar .cta-bg{
  position:absolute;inset:0;background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  opacity:.14;pointer-events:none;
}
.cta-inner{
  position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;
  gap:28px;padding:44px 0;flex-wrap:wrap;
}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.4vw,30px);margin-bottom:8px;}
.cta-inner p{color:var(--ink-muted);margin:0;font-size:15px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-foot{background:var(--ink);color:var(--ink-muted);padding:72px 0 32px;position:relative;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.foot-brand .logo{color:#fff;margin-bottom:16px;display:inline-flex;}
.foot-brand .logo em{color:var(--orange);}
.foot-brand p{font-size:14px;line-height:1.8;color:var(--ink-muted);margin:0 0 20px;max-width:30em;}
.foot-social{display:flex;gap:10px;}
.foot-social span{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line-ink);
  display:flex;align-items:center;justify-content:center;color:var(--ink-text);font-size:15px;
  transition:all .18s ease;
}
.foot-social span:hover{border-color:var(--orange);color:var(--orange);}
.foot-col h5{
  font-size:13px;letter-spacing:.08em;color:var(--ink-muted);font-weight:600;
  margin:0 0 18px;text-transform:uppercase;
}
.foot-col ul{display:flex;flex-direction:column;gap:12px;}
.foot-col a{color:var(--ink-text);font-size:14px;}
.foot-col a:hover{color:var(--orange);}
.foot-contact li{display:flex;gap:10px;font-size:14px;color:var(--ink-text);line-height:1.7;}
.foot-contact i{color:var(--cyan);margin-top:4px;width:16px;flex:none;}
.foot-contact .mono{color:var(--ink-text);}
.foot-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line-ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-muted);
}
.foot-bottom .mono{font-size:12px;}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);}
.reveal.in{opacity:1;transform:none;transition:opacity .32s cubic-bezier(.2,.7,.2,1),transform .32s cubic-bezier(.2,.7,.2,1);}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .rev-cols{columns:2;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:900px){
  :root{--sec:72px;}
  .head-nav,.head-cta{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .head-inner{gap:16px;}
  .hero{padding:52px 0 64px;}
  .hero-shot{transform:none;margin-top:36px;}
  .hero-facts{gap:0 28px;}
  .dl-grid{grid-template-columns:repeat(2,1fr);}
  .news-layout{grid-template-columns:1fr;}
  .req-list{grid-template-columns:180px 1fr;}
  .cta-inner{padding:36px 0;}
}
@media (max-width:640px){
  :root{--sec:56px;}
  .container{padding:0 16px;}
  .rev-cols{columns:1;}
  .dl-grid{grid-template-columns:1fr;}
  .req-list{grid-template-columns:1fr;}
  .req-list dt{padding-bottom:4px;border-bottom:0;}
  .req-list dd{padding-top:0;}
  .shot-card{flex:0 0 86vw;}
  .value-item{grid-template-columns:48px 1fr;gap:12px;}
  .hero-actions .btn{width:100%;}
  .foot-grid{grid-template-columns:1fr;}
  .news-side{padding:6px 16px;}
  .news-row{grid-template-columns:1fr;gap:6px;}
  .news-row .date{justify-self:start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
  .hero-shot{transform:none;}
}

/* roulang page: article */
:root{
  --ink:#14201F;
  --ink-2:#1C2A28;
  --ink-3:#22322F;
  --orange:#E1662F;
  --orange-d:#C9551F;
  --cyan:#17A08A;
  --cyan-soft:#E6F2EF;
  --cyan-deep:#0F6F5F;
  --bg:#F5F6F3;
  --card:#FFFFFF;
  --text:#2A3230;
  --muted:#6B7672;
  --light:#EDEFEA;
  --light-muted:#A8B3AF;
  --line:#E3E6E1;
  --line-dark:rgba(255,255,255,.10);
  --ok:#2E8B62;
  --warn:#C9852A;
  --err:#C0453B;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(20,32,31,.06), 0 8px 24px -12px rgba(20,32,31,.14);
  --sh-hover:0 12px 32px -12px rgba(20,32,31,.22);
  --sec:96px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;background:transparent}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.2;color:var(--ink)}
p{margin:0}
.mono{font-family:'SF Mono',Consolas,Menlo,monospace;font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:6px}

/* ============ 按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:14px;font-weight:600;letter-spacing:.02em;white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn:active{transform:scale(.98)}
.btn-solid{background:var(--orange);color:#fff;box-shadow:0 8px 20px -10px rgba(225,102,47,.7)}
.btn-solid:hover{background:var(--orange-d);box-shadow:0 12px 26px -10px rgba(201,85,31,.75)}
.btn-ghost{border:1px solid var(--line);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--orange);color:var(--orange)}
.btn-line{border:1px solid rgba(255,255,255,.28);color:#fff;background:transparent}
.btn-line:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:var(--cyan-soft);color:var(--cyan-deep);border:1px solid rgba(23,160,138,.22);
}
.badge-orange{background:#FDEBE2;color:var(--orange-d);border-color:rgba(225,102,47,.24)}

/* ============ 导航 ============ */
.site-head{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:height .22s var(--ease),box-shadow .22s var(--ease);
}
.head-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px;transition:height .22s var(--ease)}
.site-head.is-scrolled{box-shadow:0 6px 22px -16px rgba(20,32,31,.45)}
.site-head.is-scrolled .head-inner{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:800;letter-spacing:0;color:var(--ink)}
.logo em{font-style:normal;color:var(--orange)}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:9px;
  background:var(--ink);color:#fff;font-size:13px;font-weight:800;letter-spacing:.04em;
}
.head-nav{display:flex;align-items:center;gap:28px}
.head-nav > a{
  position:relative;font-size:14px;font-weight:500;color:var(--text);
  padding:6px 0;transition:color .18s var(--ease);
}
.head-nav > a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--orange);
  transition:width .2s var(--ease);
}
.head-nav > a:hover{color:var(--orange)}
.head-nav > a:hover::after{width:100%}
.head-nav > a.active{color:var(--ink);font-weight:700}
.head-nav > a.active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--orange);
}
.head-cta{display:flex;align-items:center;gap:10px}
.drawer-cta{display:none}
.nav-toggle{
  display:none;width:46px;height:46px;border-radius:10px;border:1px solid var(--line);
  align-items:center;justify-content:center;font-size:17px;color:var(--ink);background:#fff;
}

/* ============ 文章头 ============ */
.article-hero{
  position:relative;
  padding:52px 0 46px;
  background:
    linear-gradient(180deg,rgba(255,255,255,.94),rgba(245,246,243,.98)),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(180deg,rgba(23,160,138,.09) 0 1px,transparent 1px 13px);
  opacity:.5;pointer-events:none;
}
.article-hero .container{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px}
.crumbs a{color:var(--muted);transition:color .18s var(--ease)}
.crumbs a:hover{color:var(--orange)}
.crumbs span.sep{color:#C6CCC7}
.crumbs strong{color:var(--ink);font-weight:600}
.art-title{max-width:900px}
.art-title .badge{margin-bottom:16px}
.art-title h1{
  font-size:clamp(30px,4vw,42px);
  line-height:1.25;font-weight:800;color:var(--ink);
  margin-bottom:18px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--muted)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#C9CFCA}
.meta-row .mono{color:var(--text)}

/* ============ 正文布局 ============ */
.article-main{padding:56px 0 72px}
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 220px;
  gap:56px;align-items:start;
}
.article-panel{
  background:var(--card);border:1px solid var(--line);border-radius:18px;
  padding:44px 48px;box-shadow:var(--sh-card);max-width:800px;
}
.article-body{font-size:16.5px;line-height:1.85;color:var(--text);letter-spacing:.01em}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.6em}
.article-body h2{
  position:relative;font-size:clamp(22px,2.4vw,28px);line-height:1.35;
  margin:40px 0 16px;padding-left:18px;color:var(--ink);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.34em;width:4px;height:18px;
  border-radius:2px;background:var(--orange);
}
.article-body h3{font-size:clamp(18px,1.9vw,22px);line-height:1.4;margin:32px 0 12px;color:var(--ink)}
.article-body h4{font-size:17px;margin:24px 0 10px;color:var(--ink)}
.article-body a{color:var(--orange);border-bottom:1px solid rgba(225,102,47,.35);transition:color .18s var(--ease),border-color .18s var(--ease)}
.article-body a:hover{color:var(--orange-d);border-color:var(--orange-d)}
.article-body strong{font-weight:700;color:var(--ink)}
.article-body ul,.article-body ol{margin:0 0 1.6em;padding-left:1.5em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.5em 0}
.article-body li::marker{color:var(--cyan);font-weight:600}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;color:#3B4643;font-size:16px;
  background:var(--cyan-soft);border-left:3px solid var(--orange);
  border-radius:0 10px 10px 0;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body pre{
  margin:24px 0;padding:18px 20px;border-radius:10px;overflow-x:auto;
  background:#0F1A19;color:#E8EDEA;border:1px solid #1E2E2B;
  font-family:'SF Mono',Consolas,Menlo,monospace;font-size:13.5px;line-height:1.75;
}
.article-body pre code{background:none;padding:0;color:inherit;font-size:inherit}
.article-body code{
  font-family:'SF Mono',Consolas,Menlo,monospace;font-size:.9em;
  background:var(--cyan-soft);color:var(--cyan-deep);padding:2px 6px;border-radius:6px;
}
.article-body img{border-radius:var(--r-img);margin:24px auto;height:auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;text-align:center;color:var(--muted);margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{background:#F0F3EF;color:var(--ink);font-weight:600}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.empty-state{
  border:1px dashed #C9D2CC;border-radius:14px;background:#FAFBF8;
  padding:56px 24px;text-align:center;
}
.empty-icon{
  width:56px;height:56px;border-radius:50%;margin:0 auto 18px;
  display:flex;align-items:center;justify-content:center;
  background:var(--cyan-soft);color:var(--cyan);font-size:22px;
}
.empty-state h3{font-size:20px;margin-bottom:10px}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:22px}

/* 目录 */
.article-toc{position:sticky;top:96px}
.toc-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px 18px;box-shadow:var(--sh-card)}
.toc-card h4{font-size:12px;letter-spacing:.08em;color:var(--muted);font-weight:700;margin-bottom:14px}
.toc-list a{
  position:relative;display:block;padding:7px 0 7px 14px;
  font-size:13.5px;line-height:1.5;color:var(--muted);
  border-bottom:1px solid #F0F2EE;transition:color .18s var(--ease),padding-left .18s var(--ease);
}
.toc-list a:last-child{border-bottom:0}
.toc-list a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:2px;background:var(--orange);transition:height .18s var(--ease);
}
.toc-list a:hover{color:var(--ink)}
.toc-list a.is-active{color:var(--orange);font-weight:600}
.toc-list a.is-active::before{height:16px}

/* ============ 文末标签与分享 ============ */
.article-foot{padding:0 0 8px}
.foot-inner{
  max-width:800px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:18px;padding:22px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.tag-row .label{font-size:13px;color:var(--muted);margin-right:2px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12.5px;color:var(--muted);background:#fff;border:1px solid var(--line);
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.tag:hover{color:var(--orange);border-color:rgba(225,102,47,.5)}
.share-row{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.share-row a{
  width:36px;height:36px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);color:var(--muted);
  transition:color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.share-row a:hover{color:var(--orange);border-color:var(--orange);transform:translateY(-2px)}

/* ============ 相关推荐 ============ */
.related{padding:72px 0 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.sec-head h2{font-size:clamp(22px,2.6vw,30px)}
.sec-head .sec-desc{font-size:14px;color:var(--muted);margin-top:8px;max-width:560px}
.sec-more{font-size:14px;font-weight:600;color:var(--orange);display:inline-flex;align-items:center;gap:6px}
.sec-more:hover{color:var(--orange-d)}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover)}
.rel-pic{position:relative;aspect-ratio:16/10;overflow:hidden;background:#E9ECE7}
.rel-pic img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.rel-card:hover .rel-pic img{transform:scale(1.03)}
.rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:16.5px;line-height:1.5;font-weight:700;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card:hover .rel-body h3{color:var(--orange)}
.rel-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);margin-top:auto}
.back-row{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:32px}
.back-row .txt-link{font-size:14px;font-weight:600;color:var(--orange);display:inline-flex;align-items:center;gap:6px}
.back-row .txt-link:hover{color:var(--orange-d)}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;margin-top:80px;background:var(--ink);color:var(--light);overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(180deg,rgba(255,255,255,.05) 0 1px,transparent 1px 14px);
  opacity:.6;pointer-events:none;
}
.cta-inner{
  position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:24px;padding:56px 0;
}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:10px}
.cta-inner p{color:var(--light-muted);font-size:15px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ============ 页脚 ============ */
.site-foot{background:var(--ink);color:var(--light-muted);padding:72px 0 32px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}
.foot-brand .logo{color:#fff;margin-bottom:16px}
.foot-brand p{font-size:14px;line-height:1.85;color:var(--light-muted);max-width:340px}
.foot-social{display:flex;gap:10px;margin-top:20px}
.foot-social span{
  width:38px;height:38px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-dark);color:var(--light-muted);font-size:14px;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.foot-social span:hover{color:var(--orange);border-color:rgba(225,102,47,.6)}
.foot-col h5{font-size:13px;letter-spacing:.08em;color:var(--light-muted);font-weight:700;margin-bottom:18px}
.foot-col ul li{margin-bottom:12px}
.foot-col ul a{font-size:14px;color:#D8DEDA;transition:color .18s var(--ease)}
.foot-col ul a:hover{color:var(--orange)}
.foot-contact li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:#D8DEDA}
.foot-contact i{color:var(--cyan);margin-top:4px}
.foot-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  margin-top:56px;padding-top:22px;border-top:1px solid var(--line-dark);
  font-size:12.5px;color:#8E9A96;
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-toc{display:none}
  .article-panel{max-width:none}
}
@media (max-width:1024px){
  :root{--sec:72px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:899px){
  .head-nav{
    position:fixed;top:0;right:0;width:min(84vw,340px);height:100vh;
    flex-direction:column;align-items:stretch;gap:0;
    padding:92px 22px 28px;background:#fff;z-index:95;overflow-y:auto;
    box-shadow:-24px 0 48px -24px rgba(20,32,31,.35);
    transform:translateX(105%);transition:transform .28s var(--ease);
  }
  .head-nav.is-open{transform:none}
  .head-nav > a{
    height:52px;display:flex;align-items:center;font-size:16px;
    border-bottom:1px solid var(--line);padding:0;
  }
  .head-nav > a::after{display:none}
  .head-nav > a.active::before{left:-10px;width:6px;height:6px}
  .head-cta{display:none}
  .nav-toggle{display:inline-flex}
  .drawer-cta{display:flex;flex-direction:column;gap:12px;margin-top:26px}
  .drawer-cta .btn{width:100%}
  .article-hero{padding:38px 0 34px}
  .article-panel{padding:32px 24px;border-radius:16px}
  .article-main{padding:40px 0 56px}
  .cta-inner{padding:44px 0}
}
@media (max-width:640px){
  :root{--sec:56px}
  .container{padding:0 16px}
  .head-inner{height:64px}
  .logo{font-size:17px}
  .logo-mark{width:30px;height:30px;font-size:12px}
  .article-body{font-size:16px;line-height:1.85}
  .article-title h1{font-size:26px}
  .art-title h1{font-size:26px}
  .rel-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:32px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
  .cta-actions .btn{width:100%}
  .foot-inner{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root{
  --ink:#14201F;
  --ink-2:#1C2B29;
  --orange:#E1662F;
  --orange-d:#C9551F;
  --teal:#17A08A;
  --teal-pale:#E6F2EF;
  --bg:#F5F6F3;
  --card:#FFFFFF;
  --text:#2A3230;
  --muted:#6B7672;
  --line:#E3E6E1;
  --dark-line:rgba(255,255,255,.10);
  --dark-text:#EDEFEA;
  --dark-muted:#A8B3AF;
  --ok:#2E8B62;
  --warn:#C9852A;
  --err:#C0453B;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-input:10px;
  --sh-card:0 1px 2px rgba(20,32,31,.06),0 8px 24px -12px rgba(20,32,31,.14);
  --sh-hover:0 12px 32px -12px rgba(20,32,31,.22);
  --mono:'SF Mono',Consolas,'Liberation Mono',Menlo,monospace;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.7;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--orange);}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,h5,p,ul,ol,dl,dd,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
h1,h2,h3,h4,h5{font-weight:800;letter-spacing:-.02em;line-height:1.22;color:var(--ink);}
strong{font-weight:700;}
.mono{font-variant-numeric:tabular-nums;font-family:var(--mono);}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:4px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:12px 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;line-height:1;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn:active{transform:scale(.98);}
.btn-solid{background:var(--orange);color:#fff;border:1px solid var(--orange);}
.btn-solid:hover{background:var(--orange-d);border-color:var(--orange-d);color:#fff;box-shadow:0 10px 24px -12px rgba(225,102,47,.7);}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line);}
.btn-ghost:hover{border-color:var(--ink);color:var(--ink);background:#fff;}
.btn-outline-light{background:transparent;color:var(--dark-text);border:1px solid rgba(255,255,255,.32);}
.btn-outline-light:hover{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.6);}
.btn-sm{min-height:38px;padding:9px 16px;font-size:14px;}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:70;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-head.is-scrolled{box-shadow:0 6px 24px -16px rgba(20,32,31,.35);}
.head-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height .2s ease;}
.site-head.is-scrolled .head-inner{height:64px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:800;letter-spacing:0;color:var(--ink);}
.logo em{font-style:normal;color:var(--orange);}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:9px;background:var(--ink);color:#fff;
  font-size:13px;font-weight:800;letter-spacing:.04em;font-family:var(--mono);
}
.head-nav{display:flex;align-items:center;gap:28px;margin-left:12px;}
.head-nav a{position:relative;font-size:14px;font-weight:500;color:var(--text);padding:6px 0;}
.head-nav a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--orange);
  transition:width .18s ease;
}
.head-nav a:hover::after{width:100%;}
.head-nav a.active{color:var(--ink);font-weight:700;}
.head-nav a.active::before{
  content:"";position:absolute;left:-11px;top:50%;transform:translateY(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--orange);
}
.head-nav a.active::after{width:100%;}
.head-cta{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  color:var(--ink);font-size:17px;background:#fff;
}
.nav-mask{
  position:fixed;inset:0;background:rgba(20,32,31,.42);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;z-index:75;
}
.nav-mask.is-open{opacity:1;visibility:visible;}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  padding:68px 0 60px;
  background:
    linear-gradient(180deg,rgba(245,246,243,.94),rgba(245,246,243,.985)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(90deg,rgba(23,160,138,.06) 0 1px,transparent 1px 76px);
}
.cat-hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1fr 336px;gap:56px;align-items:center;}
.crumb{font-size:13px;color:var(--muted);margin-bottom:18px;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--orange);}
.crumb span.sep{margin:0 8px;color:#C3C9C4;}
.crumb strong{color:var(--ink);font-weight:700;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;border:1px solid rgba(23,160,138,.35);
  background:var(--teal-pale);color:#0F6B5C;font-size:13px;font-weight:600;letter-spacing:.02em;
}
.pill i{font-size:12px;}
.cat-hero h1{
  font-size:clamp(30px,4.2vw,48px);margin:20px 0 16px;max-width:15em;
}
.cat-hero .lead{
  font-size:clamp(16px,1.5vw,18px);color:var(--muted);max-width:34em;line-height:1.8;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.trust-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.trust-chip b{color:var(--ink);font-weight:700;}
.hero-stats{
  display:grid;gap:1px;background:var(--line);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);
}
.stat{background:#fff;padding:22px 24px;}
.stat .num{font-size:26px;font-weight:800;color:var(--ink);font-family:var(--mono);letter-spacing:-.01em;}
.stat .num em{font-style:normal;font-size:14px;color:var(--orange);margin-left:4px;font-weight:700;}
.stat .lab{font-size:13px;color:var(--muted);margin-top:4px;}

/* ---------- layout ---------- */
.cat-body{padding:72px 0 8px;}
.cat-layout{display:grid;grid-template-columns:200px 1fr;gap:56px;align-items:start;}

/* ---------- toc ---------- */
.cat-toc{position:sticky;top:96px;}
.toc-title{
  font-size:12px;letter-spacing:.08em;color:var(--muted);font-weight:600;
  text-transform:uppercase;margin-bottom:14px;
}
.toc-item{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:11px 10px 11px 14px;font-size:14px;color:var(--muted);border-radius:8px;
  transition:color .18s ease,background-color .18s ease;
}
.toc-item .toc-num{font-family:var(--mono);font-size:12px;color:var(--teal);min-width:20px;}
.toc-item::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(0);
  width:3px;height:20px;border-radius:3px;background:var(--orange);
  transition:transform .18s ease;
}
.toc-item:hover{color:var(--ink);background:#fff;}
.toc-item.is-active{color:var(--ink);font-weight:700;background:#fff;}
.toc-item.is-active::before{transform:translateY(-50%) scaleY(1);}
.toc-item.is-active .toc-num{color:var(--orange);}

/* ---------- content ---------- */
.blk{margin-bottom:64px;scroll-margin-top:104px;}
.blk-head{margin-bottom:26px;}
.blk-head .eyebrow{
  font-family:var(--mono);font-size:12px;letter-spacing:.1em;color:var(--teal);
  display:block;margin-bottom:10px;
}
.blk-head h2{font-size:clamp(22px,2.6vw,30px);}
.blk-head p{color:var(--muted);margin-top:12px;max-width:56em;}

.t-grid{margin-left:-12px;margin-right:-12px;}
.t-grid > .cell{padding-left:12px;padding-right:12px;margin-bottom:24px;}

.t-card{
  height:100%;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px;box-shadow:var(--sh-card);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  display:flex;flex-direction:column;
}
.t-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:#D6DBD5;}
.t-card-media{
  aspect-ratio:16/10;overflow:hidden;border-radius:var(--r-img);background:#EDEFEA;
  display:flex;align-items:center;justify-content:center;
}
.t-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.t-card:hover .t-card-media img{transform:scale(1.02);}
.t-card-media.is-fail::after{
  content:"\f03e";font-family:"Font Awesome 6 Free";font-weight:900;color:#B9C0BA;font-size:26px;
}
.t-card-body{padding:18px 4px 4px;}
.chip{
  display:inline-block;padding:3px 11px;border-radius:999px;
  background:var(--teal-pale);color:#0F6B5C;font-size:12px;font-weight:600;letter-spacing:.02em;
}
.t-card h3{font-size:18px;margin:12px 0 8px;}
.t-card:hover h3{color:var(--orange);}
.t-card p{
  font-size:14px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag-row span{
  font-family:var(--mono);font-size:12px;color:var(--muted);
  border:1px solid var(--line);border-radius:999px;padding:3px 10px;font-variant-numeric:tabular-nums;
}
.flow-note{
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--teal);
  border-radius:0 var(--r-card) var(--r-card) 0;padding:20px 24px;color:var(--muted);font-size:15px;line-height:1.85;
}
.flow-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:24px;}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px;
  transition:transform .18s ease,box-shadow .18s ease;
}
.step:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
.step .n{font-family:var(--mono);font-size:13px;color:var(--orange);font-weight:700;}
.step h4{font-size:16px;margin:10px 0 8px;}
.step p{font-size:13px;color:var(--muted);line-height:1.7;}
.report-list{border-top:1px solid var(--line);margin-top:6px;}
.report-list li{
  display:flex;gap:16px;align-items:flex-start;padding:16px 0;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--muted);
}
.report-list li i{color:var(--teal);margin-top:5px;font-size:14px;}
.report-list li b{color:var(--ink);font-weight:700;}

/* ---------- compare bar ---------- */
.compare-bar{
  background:var(--teal-pale);border-top:1px solid #CFE4DE;border-bottom:1px solid #CFE4DE;
  padding:44px 0;margin-top:24px;
}
.compare-inner{display:grid;grid-template-columns:280px 1fr;gap:44px;align-items:center;}
.compare-inner h2{font-size:clamp(20px,2.3vw,26px);}
.compare-inner p{color:#3B544F;font-size:15px;line-height:1.85;}

/* ---------- faq ---------- */
.faq-sec{padding:80px 0 8px;}
.faq-list{margin-top:32px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;font-size:17px;font-weight:600;color:var(--ink);letter-spacing:-.01em;
  transition:color .18s ease;
}
.faq-q:hover{color:var(--orange);}
.faq-item.is-open .faq-q{color:var(--orange);}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 20px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .2s ease,opacity .2s ease;
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-a-inner{padding:0 4px 24px;max-width:62em;}
.faq-a-inner p{font-size:15px;color:var(--muted);line-height:1.85;}

/* ---------- cta ---------- */
.cta-bar{
  margin-top:80px;background:var(--ink);color:var(--dark-text);
  padding:52px 0;position:relative;overflow:hidden;
}
.cta-bar::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(90deg,rgba(255,255,255,.05) 0 1px,transparent 1px 88px);
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;}
.cta-inner h2{color:#fff;font-size:clamp(20px,2.4vw,28px);}
.cta-inner p{color:var(--dark-muted);margin-top:10px;font-size:15px;max-width:38em;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-foot{background:var(--ink);color:var(--dark-muted);padding:72px 0 32px;position:relative;}
.site-foot .logo{color:#fff;}
.site-foot .logo-mark{background:rgba(255,255,255,.10);color:#fff;}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:44px;}
.foot-brand p{font-size:14px;line-height:1.8;margin-top:18px;max-width:30em;}
.foot-social{display:flex;gap:10px;margin-top:20px;}
.foot-social span{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:10px;background:rgba(255,255,255,.06);
  color:#C8D2CE;border:1px solid var(--dark-line);font-size:14px;transition:background-color .18s ease,color .18s ease;
}
.foot-social span:hover{background:rgba(225,102,47,.18);color:#fff;}
.foot-col h5{font-size:13px;letter-spacing:.08em;color:var(--dark-muted);font-weight:600;margin-bottom:16px;}
.foot-col ul li{margin-bottom:11px;font-size:14px;}
.foot-col ul li a{color:#D7DEDA;}
.foot-col ul li a:hover{color:var(--orange);}
.foot-contact li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:#D7DEDA;}
.foot-contact li i{color:var(--teal);margin-top:5px;font-size:13px;}
.foot-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--dark-line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:#93A09B;
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .32s cubic-bezier(.2,.7,.2,1),transform .32s cubic-bezier(.2,.7,.2,1);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .cat-layout{grid-template-columns:1fr;gap:32px;}
  .cat-toc{position:static;}
  .toc-list{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch;}
  .toc-list::-webkit-scrollbar{height:4px;}
  .toc-list::-webkit-scrollbar-thumb{background:#D3DAD4;border-radius:4px;}
  .toc-item{white-space:nowrap;border:1px solid var(--line);background:#fff;border-radius:999px;padding:9px 16px;}
  .toc-item::before{display:none;}
  .toc-item.is-active{border-color:var(--orange);color:var(--orange);}
  .toc-item.is-active .toc-num{color:var(--orange);}
  .flow-steps{grid-template-columns:repeat(2,1fr);}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-stats{grid-template-columns:repeat(3,1fr);}
  .compare-inner{grid-template-columns:1fr;gap:18px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:899px){
  .head-nav{
    position:fixed;top:0;right:0;height:100vh;width:min(78vw,330px);
    background:#fff;display:flex;flex-direction:column;align-items:stretch;gap:0;
    padding:88px 24px 32px;margin:0;
    transform:translateX(102%);transition:transform .28s ease;
    box-shadow:-14px 0 40px rgba(20,32,31,.16);z-index:80;overflow-y:auto;
  }
  .head-nav.is-open{transform:translateX(0);}
  .head-nav a{height:50px;display:flex;align-items:center;font-size:15px;border-bottom:1px solid var(--line);}
  .head-nav a::after{display:none;}
  .head-nav a.active::before{position:static;transform:none;margin-right:10px;}
  .nav-toggle{display:inline-flex;}
  .head-cta{margin-left:auto;margin-right:8px;}
  .head-cta .btn-ghost{display:none;}
  .head-cta .btn-solid{min-height:42px;padding:10px 16px;font-size:14px;}
  .cat-hero{padding:52px 0 46px;}
  .cat-body{padding:56px 0 8px;}
  .blk{margin-bottom:52px;}
  .faq-sec{padding:64px 0 8px;}
  .cta-bar{margin-top:64px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .site-foot{padding:56px 0 28px;}
}
@media (max-width:600px){
  .container{padding:0 16px;}
  .logo{font-size:17px;}
  .head-cta .btn-solid{padding:9px 13px;font-size:13px;}
  .hero-stats{grid-template-columns:1fr;}
  .flow-steps{grid-template-columns:1fr;}
  .t-grid{margin-left:-8px;margin-right:-8px;}
  .t-grid > .cell{padding-left:8px;padding-right:8px;margin-bottom:16px;}
  .cat-hero h1{font-size:27px;}
  .foot-grid{grid-template-columns:1fr;gap:32px;}
  .foot-bottom{flex-direction:column;gap:8px;}
  .hero-actions .btn{flex:1 1 100%;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --ink:#14201F;
  --ink-soft:#1D2C2A;
  --orange:#E1662F;
  --orange-dark:#C9551F;
  --teal:#17A08A;
  --teal-soft:#E6F2EF;
  --bg:#F5F6F3;
  --card:#FFFFFF;
  --text:#2A3230;
  --muted:#6B7672;
  --line:#E3E6E1;
  --ink-text:#EDEFEA;
  --ink-muted:#A8B3AF;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh:0 1px 2px rgba(20,32,31,.06),0 8px 24px -12px rgba(20,32,31,.14);
  --sh-hi:0 12px 32px -12px rgba(20,32,31,.22);
  --sec:96px;
  --mono:'SF Mono',Consolas,'Liberation Mono',monospace;
}

*,*::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','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4,h5{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.22;color:var(--ink);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:0;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* focus */
a:focus-visible,button:focus-visible{outline:2px solid var(--orange);outline-offset:3px;border-radius:6px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);
  font-weight:600;font-size:15px;letter-spacing:.02em;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn:active{transform:scale(.98);}
.btn-solid{background:var(--orange);color:#fff;box-shadow:0 6px 18px -10px rgba(225,102,47,.9);}
.btn-solid:hover{background:var(--orange-dark);color:#fff;box-shadow:0 10px 24px -10px rgba(201,85,31,.85);}
.btn-ghost{border:1px solid var(--line);color:var(--ink);background:#fff;}
.btn-ghost:hover{border-color:var(--teal);color:var(--teal);}
.btn-line{border:1px solid rgba(255,255,255,.28);color:var(--ink-text);}
.btn-line:hover{border-color:var(--orange);color:#fff;background:rgba(225,102,47,.14);}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:60;
  background:var(--bg);
  transition:background .2s ease,box-shadow .2s ease,height .2s ease;
}
.site-head.compact{background:#fff;box-shadow:0 1px 0 var(--line),0 10px 28px -22px rgba(20,32,31,.5);}
.head-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height .2s ease;}
.site-head.compact .head-inner{height:64px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--ink);letter-spacing:0;}
.logo em{font-style:normal;color:var(--orange);}
.logo-mark{
  width:34px;height:34px;border-radius:9px;flex:0 0 34px;
  background:var(--ink);color:var(--teal-soft);
  display:grid;place-items:center;font-family:var(--mono);font-size:13px;font-weight:700;
  letter-spacing:.04em;
}
.head-nav{display:flex;align-items:center;gap:28px;margin-left:12px;}
.head-nav a{
  position:relative;font-size:14px;font-weight:500;color:var(--muted);
  padding:6px 0;transition:color .18s ease;
}
.head-nav a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--orange);transition:width .2s ease;
}
.head-nav a:hover{color:var(--ink);}
.head-nav a:hover::after{width:100%;}
.head-nav a.active{color:var(--ink);font-weight:600;}
.head-nav a.active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--orange);
}
.head-cta{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  align-items:center;justify-content:center;font-size:17px;
}

/* ---------- cat hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  background:
    linear-gradient(180deg,rgba(245,246,243,.96),rgba(245,246,243,1)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-bottom:1px solid var(--line);
  padding:64px 0 56px;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:repeating-linear-gradient(180deg,rgba(23,160,138,.06) 0 1px,transparent 1px 26px);
}
.cat-hero-inner{position:relative;max-width:900px;}
.crumb{font-size:13px;color:var(--muted);margin-bottom:18px;}
.crumb a:hover{color:var(--orange);}
.crumb span{font-weight:600;color:var(--ink);}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:999px;
  background:var(--teal-soft);color:#0F7F6D;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  border:1px solid rgba(23,160,138,.24);
}
.cat-hero h1{
  font-size:clamp(30px,4.4vw,50px);
  margin:20px 0 0;
  letter-spacing:-.03em;
}
.hero-lead{
  margin-top:18px;font-size:clamp(17px,2vw,20px);font-weight:600;color:var(--ink-soft);
}
.hero-desc{margin-top:14px;max-width:720px;font-size:16px;line-height:1.85;color:var(--muted);}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-meta span{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:13px;color:var(--muted);box-shadow:var(--sh);
}
.hero-meta b{font-weight:700;color:var(--ink);font-family:var(--mono);font-variant-numeric:tabular-nums;}

/* ---------- sections ---------- */
.section{padding:var(--sec) 0;}
.section-tight{padding:72px 0;}
.sec-head{max-width:720px;margin-bottom:40px;}
.sec-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  color:var(--teal);margin-bottom:14px;
}
.sec-kicker::before{content:"";width:22px;height:2px;background:var(--teal);display:inline-block;}
.sec-head h2{font-size:clamp(24px,3vw,36px);}
.sec-head p{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.85;max-width:660px;}

/* ---------- quick select (tags + rank) ---------- */
.quick-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:40px;align-items:start;}
.tag-block{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh);}
.tag-block h3{font-size:19px;margin-bottom:8px;}
.tag-block p{color:var(--muted);font-size:14px;line-height:1.8;}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:999px;
  border:1px solid var(--line);background:var(--bg);
  font-size:13px;color:var(--text);font-weight:500;
  transition:border-color .18s ease,color .18s ease,background .18s ease,transform .18s ease;
}
.tag:hover{border-color:var(--teal);color:#0F7F6D;background:var(--teal-soft);transform:translateY(-1px);}
.rank-list{border-top:1px solid var(--line);}
.rank-item{
  display:flex;align-items:center;gap:20px;
  padding:20px 8px 20px 0;
  border-bottom:1px solid var(--line);
  position:relative;transition:transform .18s ease;
}
.rank-item::before{
  content:"";position:absolute;left:-14px;top:50%;transform:translateY(-50%) scaleY(0);
  width:3px;height:32px;background:var(--orange);border-radius:2px;
  transition:transform .18s ease;
}
.rank-item:hover{transform:translateX(4px);}
.rank-item:hover::before{transform:translateY(-50%) scaleY(1);}
.rank-num{font-family:var(--mono);font-size:13px;color:var(--teal);font-weight:700;flex:0 0 30px;}
.rank-main{flex:1 1 auto;min-width:0;}
.rank-main h4{font-size:16px;font-weight:700;}
.rank-main p{font-size:13.5px;color:var(--muted);margin-top:4px;}
.count-badge{
  flex:0 0 auto;font-size:12px;font-family:var(--mono);
  padding:5px 12px;border-radius:999px;
  background:var(--teal-soft);color:#0F7F6D;border:1px solid rgba(23,160,138,.2);
}

/* ---------- timeline ---------- */
.timeline{position:relative;margin-top:8px;}
.tl-item{
  position:relative;
  display:grid;grid-template-columns:56px minmax(0,1fr);column-gap:26px;
  padding-bottom:44px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-rail{position:relative;display:flex;justify-content:center;}
.tl-node{
  position:relative;z-index:2;
  width:46px;height:46px;border-radius:50%;
  background:var(--teal-soft);border:2px solid var(--teal);color:#0F7F6D;
  display:grid;place-items:center;
  font-family:var(--mono);font-size:14px;font-weight:700;
}
.tl-line{
  position:absolute;left:50%;top:46px;bottom:-44px;width:2px;
  transform:translateX(-50%);
  background:linear-gradient(180deg,var(--orange),rgba(225,102,47,.12));
}
.tl-item:last-child .tl-line{display:none;}
.tl-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh);
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:26px;align-items:center;
  transition:box-shadow .18s ease,transform .18s ease;
}
.tl-card:hover{box-shadow:var(--sh-hi);transform:translateY(-2px);}
.tl-item:nth-child(even) .tl-card .tl-media{order:-1;}
.tl-card h3{font-size:20px;margin-bottom:12px;}
.tl-card p{color:var(--muted);font-size:15px;line-height:1.85;}
.point-list{margin-top:16px;display:flex;flex-direction:column;gap:9px;}
.point-list li{position:relative;padding-left:18px;font-size:14px;color:var(--text);}
.point-list li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:var(--teal);
}
.tl-media{
  border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16/10;background:#EDEFEA;
}
.tl-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.tl-card:hover .tl-media img{transform:scale(1.03);}

/* ---------- compare ---------- */
.compare-wrap{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;}
.compare-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh);
}
.compare-head{
  background:var(--ink);color:var(--ink-text);
  padding:18px 22px;font-size:15px;font-weight:700;letter-spacing:.01em;
  display:flex;align-items:center;gap:10px;
}
.compare-head i{color:var(--teal);}
.compare-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:14px 22px;border-bottom:1px solid var(--line);
  font-size:14px;
}
.compare-row:nth-child(odd){background:#FAFBF8;}
.compare-row:last-child{border-bottom:0;}
.compare-row span{color:var(--muted);flex:0 0 auto;}
.compare-row b{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-weight:700;color:var(--ink);text-align:right;
}
.compare-row b.em{color:var(--orange-dark);}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;
  transition:color .18s ease;
}
.faq-q:hover{color:var(--orange);}
.faq-item.open .faq-q{color:var(--orange);}
.faq-icon{position:relative;flex:0 0 20px;width:20px;height:20px;color:currentColor;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-icon::before{left:1px;right:1px;top:9px;height:2px;}
.faq-icon::after{top:1px;bottom:1px;left:9px;width:2px;transition:transform .2s ease;}
.faq-item.open .faq-icon::after{transform:scaleY(0);}
.faq-a{
  max-height:0;overflow:hidden;opacity:0;
  transition:max-height .25s ease,opacity .2s ease,padding .25s ease;
}
.faq-item.open .faq-a{max-height:420px;opacity:1;padding-bottom:24px;}
.faq-a p{font-size:15px;line-height:1.85;color:var(--muted);padding-right:40px;}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--ink);color:var(--ink-text);
  padding:56px 0;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.6;
  background-image:repeating-linear-gradient(180deg,rgba(23,160,138,.07) 0 1px,transparent 1px 22px);
}
.cta-inner{
  position:relative;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.6vw,30px);}
.cta-inner p{color:var(--ink-muted);font-size:15px;margin-top:10px;max-width:560px;line-height:1.8;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-foot{background:var(--ink);color:var(--ink-muted);padding:72px 0 32px;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;}
.foot-brand .logo{color:#fff;margin-bottom:18px;}
.foot-brand .logo-mark{background:#fff;color:var(--ink);}
.foot-brand p{font-size:14px;line-height:1.85;color:var(--ink-muted);max-width:340px;}
.foot-social{display:flex;gap:12px;margin-top:20px;}
.foot-social span{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.14);color:var(--ink-muted);
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.foot-social span:hover{color:#fff;border-color:var(--orange);background:rgba(225,102,47,.16);}
.foot-col h5{
  font-size:13px;letter-spacing:.08em;color:var(--ink-muted);
  font-weight:700;margin-bottom:18px;text-transform:uppercase;
}
.foot-col ul{display:flex;flex-direction:column;gap:11px;}
.foot-col a{font-size:14px;color:var(--ink-text);transition:color .18s ease;}
.foot-col a:hover{color:var(--orange);}
.foot-contact li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:var(--ink-text);}
.foot-contact i{color:var(--teal);margin-top:5px;flex:0 0 auto;}
.foot-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.10);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--ink-muted);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .32s cubic-bezier(.2,.7,.2,1),transform .32s cubic-bezier(.2,.7,.2,1);}
.reveal.in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .quick-grid{grid-template-columns:1fr;gap:28px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:900px){
  :root{--sec:72px;}
  .head-nav{
    display:none;order:3;flex-basis:100%;flex-direction:column;align-items:stretch;
    gap:0;margin:0;padding:6px 0 10px;
  }
  .head-cta{
    display:none;order:4;flex-basis:100%;margin:0;padding:0 0 16px;
  }
  .site-head.open .head-nav,.site-head.open .head-cta{display:flex;}
  .site-head.open{background:#fff;box-shadow:0 18px 32px -24px rgba(20,32,31,.5);}
  .head-inner{flex-wrap:wrap;height:auto;min-height:64px;padding-top:10px;padding-bottom:10px;gap:12px;}
  .site-head.compact .head-inner{height:auto;}
  .nav-toggle{display:inline-flex;}
  .head-nav a{min-height:48px;display:flex;align-items:center;border-bottom:1px solid var(--line);font-size:15px;}
  .head-nav a::after{display:none;}
  .head-nav a.active::before{display:none;}
  .head-nav a.active{color:var(--orange);}
  .head-cta{gap:10px;}
  .head-cta .btn{flex:1 1 auto;justify-content:center;}
  .tl-card{grid-template-columns:1fr;gap:18px;}
  .tl-item:nth-child(even) .tl-card .tl-media{order:0;}
  .compare-wrap{grid-template-columns:1fr;}
}
@media (max-width:640px){
  :root{--sec:56px;}
  .container{padding:0 16px;}
  .cat-hero{padding:44px 0 40px;}
  .tl-item{grid-template-columns:40px minmax(0,1fr);column-gap:16px;}
  .tl-node{width:36px;height:36px;font-size:12px;}
  .tl-line{top:36px;bottom:-40px;}
  .tl-card{padding:20px;}
  .rank-item{flex-wrap:wrap;gap:10px 14px;}
  .count-badge{order:3;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;justify-content:center;}
  .foot-grid{grid-template-columns:1fr;}
  .faq-q{font-size:16px;padding:18px 2px;}
  .faq-a p{padding-right:0;}
  .compare-row{flex-direction:column;align-items:flex-start;gap:4px;}
  .compare-row b{text-align:left;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}