/* roulang page: index */
:root{
  --brand:#0E5A4A;
  --brand-deep:#08241F;
  --brand-soft:#E4F0EC;
  --accent:#F26B21;
  --signal:#17A398;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --ink:#14211E;
  --ink-2:#5A6A66;
  --line:rgba(14,90,74,.12);
  --r-card:16px;
  --r-btn:12px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(8,36,31,.06);
  --sh-2:0 8px 24px rgba(8,36,31,.08);
  --sh-3:0 16px 36px rgba(8,36,31,.14);
  --pad-sec:96px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
p{margin:0 0 1.2em;}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,text-decoration-color .2s ease;}
a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.wrap{padding:0 32px;}}
section{position:relative;}
.sec{padding:var(--pad-sec) 0;}
@media (max-width:1023px){:root{--pad-sec:72px;}}
@media (max-width:767px){:root{--pad-sec:56px;}}
.sec-head{margin-bottom:40px;max-width:760px;}
.sec-tag{display:inline-block;font-size:13px;letter-spacing:.08em;color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:4px 14px;margin-bottom:16px;font-weight:600;}
.sec-title{font-size:34px;color:var(--ink);margin-bottom:14px;}
.sec-desc{color:var(--ink-2);font-size:16px;margin:0;}
@media (max-width:767px){.sec-title{font-size:26px;}}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(8,36,31,.28);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.18);
  box-shadow:0 2px 18px rgba(8,36,31,.12);
  transition:background .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.site-header.is-solid{
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.nav-inner{
  width:100%;max-width:1200px;margin:0 auto;padding:0 20px;
  height:72px;display:flex;align-items:center;gap:24px;
}
@media (min-width:1024px){.nav-inner{padding:0 32px;}}
.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:#fff;letter-spacing:-.02em;}
.logo:hover{color:#fff;text-decoration:none;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;background:var(--accent);
  color:#fff;font-weight:800;font-size:15px;display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);letter-spacing:-.04em;flex:0 0 34px;
}
.site-header.is-solid .logo{color:var(--ink);}
.nav-links{display:none;align-items:center;gap:28px;margin-left:18px;}
@media (min-width:1024px){.nav-links{display:flex;}}
.nav-links a{
  color:rgba(255,255,255,.88);font-size:15.5px;font-weight:500;position:relative;padding:6px 0;
}
.nav-links a:hover{color:#fff;text-decoration:none;}
.nav-links a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--accent);
  transition:right .24s ease;
}
.nav-links a:hover::after,.nav-links a.active::after{right:0;}
.nav-links a.active{color:#fff;}
.site-header.is-solid .nav-links a{color:var(--ink-2);}
.site-header.is-solid .nav-links a:hover,.site-header.is-solid .nav-links a.active{color:var(--brand);}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-search{
  display:none;align-items:center;gap:8px;background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.22);border-radius:var(--r-input);padding:7px 12px;
  color:rgba(255,255,255,.9);font-size:14px;transition:background .2s ease,border-color .2s ease;
}
.nav-search:hover{background:rgba(255,255,255,.22);color:#fff;text-decoration:none;}
@media (min-width:1024px){.nav-search{display:inline-flex;}}
.site-header.is-solid .nav-search{background:var(--brand-soft);border-color:var(--line);color:var(--brand);}
.site-header.is-solid .nav-search:hover{background:#D8EAE4;color:var(--brand);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-weight:600;font-size:15px;
  padding:11px 20px;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  text-decoration:none;white-space:nowrap;
}
.btn:hover{text-decoration:none;transform:translateY(-1px);}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:#0B4C3F;color:#fff;box-shadow:var(--sh-2);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 4px 14px rgba(242,107,33,.28);}
.btn-accent:hover{background:#DB5C17;color:#fff;box-shadow:0 10px 24px rgba(242,107,33,.34);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.38);}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;}
.btn-ghost-dark{background:transparent;color:var(--brand);border-color:var(--line);}
.btn-ghost-dark:hover{background:var(--brand-soft);color:var(--brand);}
.btn-sm{padding:8px 15px;font-size:14px;}
.btn-lg{padding:14px 26px;font-size:16px;border-radius:14px;}
.nav-cta{display:none;}
@media (min-width:768px){.nav-cta{display:inline-flex;}}
.burger{
  width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.24);
  background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:18px;cursor:pointer;
}
@media (min-width:1024px){.burger{display:none;}}
.site-header.is-solid .burger{color:var(--ink);border-color:var(--line);background:var(--brand-soft);}
.drawer{
  position:fixed;inset:0;z-index:80;display:none;
}
.drawer.open{display:block;}
.drawer-mask{position:absolute;inset:0;background:rgba(8,36,31,.5);backdrop-filter:blur(2px);}
.drawer-panel{
  position:absolute;top:0;right:0;width:86%;max-width:360px;height:100%;background:#fff;
  padding:22px 20px 28px;display:flex;flex-direction:column;box-shadow:-10px 0 34px rgba(8,36,31,.2);
  animation:slideIn .24s ease;
}
@keyframes slideIn{from{transform:translateX(24px);opacity:.4;}to{transform:translateX(0);opacity:1;}}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;}
.drawer-title{font-size:16px;font-weight:800;color:var(--ink);}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:var(--brand-soft);color:var(--brand);font-size:16px;cursor:pointer;}
.drawer-links{margin-top:14px;display:flex;flex-direction:column;}
.drawer-links a{
  font-size:18px;line-height:56px;color:var(--ink);border-bottom:1px solid var(--line);font-weight:600;
}
.drawer-links a:hover{color:var(--brand);text-decoration:none;}
.drawer-foot{margin-top:auto;padding-top:20px;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;background:var(--brand-deep);color:#fff;
  padding:132px 0 92px;
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center right;
  opacity:.34;
}
.hero-dots{
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:22px 22px;opacity:.35;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(8,36,31,.96) 0%,rgba(8,36,31,.86) 46%,rgba(8,36,31,.5) 100%);
}
.hero .wrap{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1fr;gap:44px;align-items:center;}
@media (min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:52px;}}
.hero h1{
  font-size:32px;line-height:1.15;letter-spacing:-.02em;font-weight:800;color:#fff;margin-bottom:20px;
}
@media (min-width:768px){.hero h1{font-size:44px;}}
@media (min-width:1200px){.hero h1{font-size:52px;}}
.hero h1 em{font-style:normal;color:#FFD9C2;}
.hero-sub{font-size:17px;color:rgba(255,255,255,.82);max-width:560px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 18px;align-items:center;
  font-family:var(--mono);font-size:13.5px;color:rgba(255,255,255,.78);
}
.hero-meta span{display:inline-flex;align-items:center;gap:8px;}
.hero-meta span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent);display:none;}
.hero-meta span+span::before{display:inline-block;}
.hero-visual{
  border-radius:20px;overflow:hidden;border:1px solid rgba(255,255,255,.18);
  box-shadow:0 24px 60px rgba(0,0,0,.36);background:var(--brand-soft);
}
.hero-visual img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.hero-note{
  margin-top:16px;font-size:13.5px;color:rgba(255,255,255,.7);display:flex;align-items:center;gap:10px;
}
.hero-note i{color:var(--signal);}
.meta-strip{
  position:relative;z-index:3;margin-top:-32px;
}
.meta-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);padding:22px 26px;
  display:grid;grid-template-columns:1fr;gap:16px;
}
@media (min-width:768px){.meta-card{grid-template-columns:repeat(4,1fr);gap:20px;}}
.meta-item{display:flex;flex-direction:column;gap:4px;}
.meta-item .k{font-size:12.5px;color:var(--ink-2);letter-spacing:.04em;}
.meta-item .v{font-family:var(--mono);font-size:17px;font-weight:700;color:var(--brand);}

/* ============ 功能亮点 ============ */
.feat-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:1024px){.feat-grid{grid-template-columns:repeat(12,1fr);}}
.feat-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);transition:box-shadow .22s ease,transform .22s ease;
}
.feat-item:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
@media (min-width:1024px){
  .feat-item.a{grid-column:span 5;}
  .feat-item.b{grid-column:span 7;}
  .feat-item.c{grid-column:span 7;}
  .feat-item.d{grid-column:span 5;}
}
.feat-icon{
  width:46px;height:46px;border-radius:14px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:19px;margin-bottom:16px;
}
.feat-item h3{font-size:22px;margin-bottom:10px;color:var(--ink);}
.feat-item p{color:var(--ink-2);font-size:15.5px;margin:0;}
.feat-kv{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px;}
.chip{
  font-family:var(--mono);font-size:12.5px;color:var(--brand);background:var(--brand-soft);
  border-radius:999px;padding:4px 12px;
}
.chip.sig{color:#0B6B62;background:rgba(23,163,152,.12);}

/* ============ 截图轮播 ============ */
.shots .sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;max-width:none;}
.shot-nav{display:flex;gap:10px;}
.shot-btn{
  width:46px;height:46px;border-radius:50%;border:1px solid var(--line);background:transparent;
  color:var(--brand);font-size:16px;cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.shot-btn:hover{background:var(--brand);color:#fff;border-color:var(--brand);}
.shot-viewport{
  overflow-x:auto;scroll-snap-type:x mandatory;display:flex;gap:20px;
  padding-bottom:14px;scrollbar-width:none;
}
.shot-viewport::-webkit-scrollbar{display:none;}
.shot-slide{
  flex:0 0 88%;scroll-snap-align:start;
}
@media (min-width:768px){.shot-slide{flex:0 0 62%;}}
@media (min-width:1024px){.shot-slide{flex:0 0 46%;}}
.shot-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
}
.shot-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--brand-soft);}
.shot-cap{padding:16px 20px;font-size:14.5px;color:var(--ink-2);border-top:1px solid var(--line);}
.shot-cap b{display:block;color:var(--ink);font-size:17px;margin-bottom:4px;}
.shot-dots{display:flex;gap:8px;justify-content:center;margin-top:18px;}
.shot-dots button{
  width:9px;height:9px;border-radius:50%;border:0;background:rgba(14,90,74,.22);cursor:pointer;
  transition:background .2s ease,width .2s ease;
}
.shot-dots button.on{background:var(--accent);width:26px;border-radius:999px;}

/* ============ 系统要求 ============ */
.spec-scroll{overflow-x:auto;padding-bottom:8px;}
.spec-grid{display:grid;grid-template-columns:repeat(4,minmax(240px,1fr));gap:20px;min-width:1000px;}
@media (max-width:1023px){.spec-grid{min-width:0;grid-template-columns:1fr;}}
.spec-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);display:flex;flex-direction:column;
}
.spec-top{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.spec-top i{font-size:22px;color:var(--brand);}
.spec-top .name{font-size:18px;font-weight:700;color:var(--ink);}
.badge{
  display:inline-block;border-radius:999px;padding:4px 12px;font-size:12px;font-weight:600;line-height:1.5;
}
.badge-soft{background:var(--brand-soft);color:var(--brand);}
.badge-sig{background:rgba(23,163,152,.13);color:#0B6B62;}
.spec-top .badge{margin-left:auto;}
.spec-row{
  display:flex;justify-content:space-between;gap:12px;align-items:baseline;
  padding:11px 0;border-bottom:1px dashed var(--line);font-size:14.5px;
}
.spec-row:last-child{border-bottom:0;}
.spec-row .k{color:var(--ink-2);}
.spec-row .v{font-family:var(--mono);color:var(--ink);font-weight:600;text-align:right;}
.spec-foot{margin-top:16px;font-size:13.5px;color:var(--ink-2);}

/* ============ 评价墙 ============ */
.review-grid{display:grid;grid-template-columns:1fr;gap:22px;}
@media (min-width:640px){.review-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.review-grid{grid-template-columns:repeat(4,1fr);}}
.review-card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px 22px;box-shadow:var(--sh-1);overflow:hidden;transition:box-shadow .22s ease,transform .22s ease;
}
.review-card::before{
  content:"\201C";position:absolute;top:-14px;right:12px;font-size:88px;line-height:1;
  color:var(--brand-soft);font-family:Georgia,serif;
}
.review-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
@media (min-width:1024px){.review-card:nth-child(even){margin-top:28px;}}
.review-stars{color:var(--accent);font-size:13px;letter-spacing:2px;margin-bottom:12px;}
.review-text{
  position:relative;z-index:1;font-size:15px;color:var(--ink);margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.review-user{display:flex;align-items:center;gap:12px;}
.avatar{
  width:44px;height:44px;border-radius:50%;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;flex:0 0 44px;
}
.review-user .who{font-size:14.5px;font-weight:700;color:var(--ink);line-height:1.4;}
.review-user .role{font-size:13px;color:var(--ink-2);line-height:1.4;}

/* ============ 下载区 ============ */
.dl{
  background:var(--brand-deep);color:#fff;padding:104px 0;position:relative;overflow:hidden;
}
.dl::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(8deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:16px 16px;opacity:.5;
}
.dl .wrap{position:relative;z-index:2;}
.dl-head{text-align:center;max-width:720px;margin:0 auto 42px;}
.dl-head h2{font-size:36px;color:#fff;margin-bottom:16px;}
.dl-head p{color:rgba(255,255,255,.76);margin:0;}
@media (max-width:767px){.dl-head h2{font-size:26px;}}
.dl-btns{display:grid;grid-template-columns:1fr;gap:16px;max-width:900px;margin:0 auto;}
@media (min-width:640px){.dl-btns{grid-template-columns:repeat(2,1fr);}}
.dl-btn{
  display:flex;align-items:center;gap:14px;padding:18px 22px;border-radius:var(--r-card);
  border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.06);color:#fff;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease;
}
.dl-btn:hover{transform:translateY(-1px);color:#fff;text-decoration:none;box-shadow:0 14px 30px rgba(0,0,0,.3);border-color:rgba(255,255,255,.4);}
.dl-btn i.plt{font-size:24px;color:#fff;opacity:.92;width:28px;text-align:center;}
.dl-btn .txt{display:flex;flex-direction:column;line-height:1.4;text-align:left;}
.dl-btn .txt b{font-size:16.5px;font-weight:700;}
.dl-btn .txt span{font-family:var(--mono);font-size:12.5px;color:rgba(255,255,255,.68);}
.dl-btn .go{margin-left:auto;font-size:13px;color:rgba(255,255,255,.8);}
.dl-btn.main{background:var(--accent);border-color:var(--accent);box-shadow:0 10px 26px rgba(242,107,33,.3);}
.dl-btn.main:hover{background:#DB5C17;border-color:#DB5C17;}
.dl-btn.main .txt span,.dl-btn.main .go{color:rgba(255,255,255,.9);}
.dl-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:24px;
  margin-top:38px;padding-top:30px;border-top:1px solid rgba(255,255,255,.16);
}
.dl-safe{font-size:14px;color:rgba(255,255,255,.74);max-width:520px;}
.dl-safe b{color:#fff;}
.dl-safe code{font-family:var(--mono);font-size:12.5px;background:rgba(255,255,255,.1);border-radius:6px;padding:2px 6px;}
.qr{
  width:120px;height:120px;border-radius:14px;background:rgba(255,255,255,.94);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  color:var(--brand-deep);font-size:12px;font-weight:600;
}
.qr i{font-size:34px;color:var(--brand);}

/* ============ 最新信息 ============ */
.news-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px;}
.news-head .sec-title{margin-bottom:10px;}
.more-link{font-size:15px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:8px;}
.more-link:hover{gap:12px;text-decoration:none;}
.news-grid{display:grid;grid-template-columns:1fr;gap:22px;}
@media (min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);}}
.news-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);color:var(--ink);
  transition:transform .22s ease,box-shadow .22s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);text-decoration:none;color:var(--ink);}
.news-thumb{overflow:hidden;background:var(--brand-soft);}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.news-body .badge{align-self:flex-start;margin-bottom:12px;}
.news-title{
  font-size:19px;font-weight:700;line-height:1.45;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease;
}
.news-card:hover .news-title{color:var(--brand);}
.news-sum{
  font-size:14.5px;color:var(--ink-2);margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  padding-top:14px;border-top:1px solid var(--line);
}
.news-foot time{font-family:var(--mono);font-size:13px;color:var(--ink-2);}
.news-foot i{color:var(--brand);font-size:14px;transition:transform .2s ease;}
.news-card:hover .news-foot i{transform:translateX(4px);}
.empty{
  grid-column:1/-1;background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-card);
  padding:64px 24px;text-align:center;color:var(--ink-2);
}
.empty i{font-size:34px;color:rgba(14,90,74,.28);display:block;margin-bottom:14px;}
.empty p{margin:0 0 6px;font-size:14px;}
.empty a{font-size:14px;font-weight:600;}

/* ============ FAQ ============ */
.faq-list{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;}
.faq-item:hover{border-color:var(--brand);box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;background:none;border:0;
  padding:20px 22px;font-size:17px;font-weight:700;color:var(--ink);cursor:pointer;
}
.faq-q .ic{
  margin-left:auto;font-size:14px;color:var(--brand);transition:transform .22s ease;flex:0 0 auto;
}
.faq-item.open .faq-q .ic{transform:rotate(135deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .22s ease;
}
.faq-a .inner{padding:0 22px 22px;color:var(--ink-2);font-size:15.5px;}
.faq-a .inner p:last-child{margin-bottom:0;}

/* ============ CTA ============ */
.cta-band{
  background:var(--brand-soft);border-radius:20px;padding:52px 32px;text-align:center;
  border:1px solid var(--line);
}
.cta-band h2{font-size:30px;color:var(--ink);margin-bottom:14px;}
.cta-band p{color:var(--ink-2);max-width:640px;margin:0 auto 26px;}
@media (max-width:767px){.cta-band h2{font-size:24px;}.cta-band{padding:38px 22px;}}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.72);padding:72px 0 26px;}
.foot-grid{display:grid;grid-template-columns:1fr;gap:34px;}
@media (min-width:640px){.foot-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.foot-grid{grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;}}
.foot-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:19px;font-weight:800;margin-bottom:14px;}
.foot-brand .logo-mark{width:30px;height:30px;flex:0 0 30px;font-size:13px;border-radius:9px;}
.foot-about{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);max-width:340px;margin:0;}
.foot-h{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.foot-links{display:flex;flex-direction:column;gap:11px;}
.foot-links a{
  font-size:14px;color:rgba(255,255,255,.66);transition:color .2s ease,transform .2s ease;
}
.foot-links a:hover{color:#fff;transform:translateX(2px);text-decoration:none;}
.foot-contact{font-size:14px;color:rgba(255,255,255,.66);display:flex;flex-direction:column;gap:11px;}
.foot-contact span{display:flex;gap:10px;align-items:flex-start;}
.foot-contact i{color:var(--signal);margin-top:5px;}
.foot-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.56);
}
.foot-bottom a{color:rgba(255,255,255,.66);}
.foot-bottom a:hover{color:#fff;text-decoration:none;}

/* roulang page: category1 */
:root{
  --brand:#0E5A4A;
  --brand-deep:#08241F;
  --brand-soft:#E4F0EC;
  --accent:#F26B21;
  --signal:#17A398;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --ink:#14211E;
  --ink-2:#5A6A66;
  --line:rgba(14,90,74,.12);
  --r-card:16px;
  --r-btn:12px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(8,36,31,.06);
  --sh-2:0 8px 24px rgba(8,36,31,.08);
  --sh-3:0 16px 36px rgba(8,36,31,.14);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --sec-pad:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--sans);font-size:16.5px;line-height:1.8;
  font-weight:400;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:12px;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:visited{color:var(--brand);}
a:hover{color:var(--accent);}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;color:var(--ink);letter-spacing:-.01em;}
p{margin:0 0 1.1em;}
ul,ol{margin:0 0 1.1em;padding-left:1.2em;}
li{margin-bottom:.5em;}
.wrap{max-width:1200px;margin:0 auto;padding:0 32px;width:100%;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:200;
  background:rgba(8,36,31,.28);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.18);
  box-shadow:0 6px 26px rgba(4,20,17,.18);
  transition:background .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.site-header.is-solid{
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 32px;
  height:72px;display:flex;align-items:center;gap:28px;
}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:#fff;letter-spacing:-.02em;}
.logo:visited{color:#fff;}
.site-header.is-solid .logo,.site-header.is-solid .logo:visited{color:var(--ink);}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 34px;
  background:linear-gradient(140deg,var(--accent),#d9550f);
  color:#fff;font-family:var(--mono);font-size:15px;font-weight:700;
  display:flex;align-items:center;justify-content:center;letter-spacing:-.04em;
}
.site-header.is-solid .logo-mark{background:linear-gradient(140deg,var(--brand),var(--brand-deep));}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:12px;}
.nav-links a{
  padding:9px 14px;border-radius:10px;font-size:15.5px;font-weight:600;
  color:rgba(255,255,255,.86);
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.12);}
.site-header.is-solid .nav-links a{color:var(--ink-2);}
.site-header.is-solid .nav-links a:hover{color:var(--brand);background:var(--brand-soft);}
.nav-links a.active{color:#fff;background:rgba(255,255,255,.16);}
.site-header.is-solid .nav-links a.active{color:var(--brand);background:var(--brand-soft);}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-search{
  display:inline-flex;align-items:center;gap:7px;font-size:14.5px;font-weight:600;
  color:rgba(255,255,255,.86);padding:8px 14px;border-radius:999px;
  border:1px solid rgba(255,255,255,.28);
}
.nav-search:hover{color:#fff;background:rgba(255,255,255,.14);}
.site-header.is-solid .nav-search{color:var(--ink-2);border-color:var(--line);}
.site-header.is-solid .nav-search:hover{color:var(--brand);background:var(--brand-soft);}
.burger{
  display:none;background:transparent;border:1px solid rgba(255,255,255,.28);
  color:#fff;width:42px;height:42px;border-radius:10px;font-size:17px;cursor:pointer;
}
.site-header.is-solid .burger{color:var(--ink);border-color:var(--line);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-family:var(--sans);font-size:15.5px;font-weight:700;
  padding:13px 24px;border-radius:var(--r-btn);border:1px solid transparent;
  cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  line-height:1.2;text-align:center;
}
.btn:visited{color:inherit;}
.btn-brand{background:var(--brand);color:#fff;}
.btn-brand:hover{background:#0b4a3d;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:#d9550f;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand);border-color:var(--brand);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.42);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-1px);}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  border-radius:999px;padding:4px 12px;font-size:12px;font-weight:700;line-height:1.6;
}
.badge-cat{background:var(--brand-soft);color:var(--brand);}
.badge-signal{background:rgba(23,163,152,.14);color:#0d7a72;}
.badge-accent{background:rgba(242,107,33,.14);color:#c04f10;}

/* ============ 窄 Hero ============ */
.page-hero{
  position:relative;background:var(--brand-deep);color:#fff;
  padding:132px 0 68px;overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  opacity:.30;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:22px 22px;opacity:.35;
}
.page-hero .wrap{position:relative;z-index:2;}
.crumb{font-size:13px;color:rgba(255,255,255,.62);margin-bottom:18px;}
.crumb a{color:rgba(255,255,255,.72);}
.crumb a:hover{color:#fff;}
.crumb span{margin:0 6px;opacity:.6;}
.page-hero h1{
  color:#fff;font-size:clamp(30px,4.4vw,50px);font-weight:800;
  line-height:1.15;letter-spacing:-.02em;margin-bottom:16px;max-width:840px;
}
.page-hero .lede{
  color:rgba(255,255,255,.82);font-size:17px;max-width:760px;margin-bottom:26px;
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13.5px;
  color:rgba(255,255,255,.72);margin-bottom:28px;
}
.hero-meta span{display:inline-flex;align-items:center;gap:7px;}
.hero-meta i{color:var(--accent);}
.anchor-nav{display:flex;flex-wrap:wrap;gap:10px;}
.anchor-nav a{
  font-size:14px;font-weight:600;padding:8px 16px;border-radius:999px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:#fff;
}
.anchor-nav a:hover{background:var(--accent);border-color:var(--accent);color:#fff;}

/* ============ 板块通用 ============ */
.section{padding:var(--sec-pad) 0;}
.section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{max-width:780px;margin-bottom:48px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  letter-spacing:.08em;color:var(--brand);text-transform:uppercase;margin-bottom:14px;
}
.sec-kicker::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px;}
.sec-head h2{font-size:clamp(25px,3vw,36px);font-weight:700;margin-bottom:14px;}
.sec-head p{color:var(--ink-2);font-size:16.5px;margin:0;}

/* ============ 平台下载卡 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.pkg-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;
}
.pkg-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(14,90,74,.26);}
.pkg-top{display:flex;align-items:center;gap:12px;margin-bottom:6px;}
.pkg-top i{font-size:22px;color:var(--brand);}
.pkg-top h3{font-size:19px;font-weight:700;}
.pkg-sub{font-size:13.5px;color:var(--ink-2);margin-bottom:16px;}
.spec{display:flex;justify-content:space-between;gap:14px;padding:10px 0;border-bottom:1px dashed var(--line);font-size:14.5px;}
.spec:last-of-type{border-bottom:0;}
.spec .k{color:var(--ink-2);flex:0 0 auto;}
.spec .v{font-family:var(--mono);font-weight:600;color:var(--ink);text-align:right;word-break:break-all;}
.pkg-actions{margin-top:20px;display:flex;gap:10px;flex-wrap:wrap;}

/* ============ 图文交替 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split + .split{margin-top:80px;}
.split-media{position:relative;}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--sh-2);}
.split-media .media-tag{
  position:absolute;left:16px;bottom:16px;background:rgba(8,36,31,.82);
  color:#fff;font-size:12.5px;font-weight:600;padding:6px 13px;border-radius:999px;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.split-body h2{font-size:clamp(23px,2.6vw,31px);margin-bottom:16px;}
.split-body p{color:var(--ink-2);}
.check-list{list-style:none;padding:0;margin:22px 0 0;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--ink);}
.check-list i{color:var(--signal);margin-top:6px;font-size:14px;flex:0 0 auto;}

/* ============ 步骤 ============ */
.steps{counter-reset:step;display:grid;gap:16px;}
.step-item{
  display:flex;gap:18px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--sh-1);
  transition:box-shadow .22s ease,transform .22s ease;
}
.step-item:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.step-num{
  flex:0 0 42px;width:42px;height:42px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-family:var(--mono);
  font-weight:700;font-size:16px;display:flex;align-items:center;justify-content:center;
}
.step-item h3{font-size:18px;margin-bottom:6px;}
.step-item p{margin:0;color:var(--ink-2);font-size:15.5px;}

/* ============ 提示条 ============ */
.notice{
  display:flex;gap:14px;align-items:flex-start;background:var(--brand-soft);
  border-left:3px solid var(--brand);border-radius:0 var(--r-card) var(--r-card) 0;
  padding:18px 22px;margin-top:28px;font-size:15px;color:#0a4b3f;
}
.notice i{color:var(--brand);margin-top:5px;}

/* ============ FAQ ============ */
.faq{max-width:880px;margin:0 auto;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  margin-bottom:12px;overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item:hover{border-color:var(--brand);box-shadow:var(--sh-1);}
.faq-q{
  width:100%;background:transparent;border:0;cursor:pointer;text-align:left;
  padding:20px 22px;font-family:var(--sans);font-size:17px;font-weight:700;color:var(--ink);
  display:flex;justify-content:space-between;align-items:center;gap:18px;line-height:1.5;
}
.faq-q .ic{
  flex:0 0 26px;width:26px;height:26px;border-radius:999px;background:var(--brand-soft);
  color:var(--brand);display:flex;align-items:center;justify-content:center;
  font-size:13px;transition:transform .22s ease,background .22s ease,color .22s ease;
}
.faq-item.open .faq-q .ic{transform:rotate(180deg);background:var(--accent);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-a-inner{padding:0 22px 20px;color:var(--ink-2);font-size:15.5px;}

/* ============ CTA ============ */
.cta-band{
  position:relative;background:var(--brand-deep);color:#fff;padding:88px 0;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;opacity:.22;
}
.cta-band .wrap{position:relative;z-index:2;text-align:center;}
.cta-band h2{color:#fff;font-size:clamp(25px,3vw,36px);margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.78);max-width:660px;margin:0 auto 32px;font-size:16.5px;}
.cta-btns{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
.cta-note{
  margin-top:30px;font-size:13.5px;color:rgba(255,255,255,.66);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:center;
}
.cta-note .mono{color:rgba(255,255,255,.86);}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.72);padding:64px 0 28px;}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:38px;padding-bottom:40px;}
.foot-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff;margin-bottom:16px;}
.foot-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);margin:0;}
.foot-h{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;}
.foot-links{display:flex;flex-direction:column;gap:10px;}
.foot-links a{font-size:14px;color:rgba(255,255,255,.72);transition:transform .2s ease,color .2s ease;}
.foot-links a:hover{color:#fff;transform:translateX(2px);}
.foot-contact{display:flex;flex-direction:column;gap:12px;font-size:14px;color:rgba(255,255,255,.66);}
.foot-contact i{color:var(--accent);margin-right:8px;}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding-top:22px;
  display:flex;flex-wrap:wrap;gap:12px 20px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}
.foot-bottom a{color:rgba(255,255,255,.68);}
.foot-bottom a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media screen and (max-width:1024px){
  :root{--sec-pad:72px;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .split{gap:36px;}
}
@media screen and (max-width:768px){
  :root{--sec-pad:56px;}
  .wrap,.nav-inner{padding-left:20px;padding-right:20px;}
  .burger{display:inline-flex;align-items:center;justify-content:center;}
  .nav-search{display:none;}
  .nav-links{
    position:fixed;top:72px;left:0;right:0;bottom:0;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:16px 20px 28px;margin:0;overflow-y:auto;
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:opacity .22s ease,transform .22s ease;
    box-shadow:var(--sh-2);
  }
  .nav-links.is-open{transform:translateY(0);opacity:1;pointer-events:auto;}
  .nav-links a,.site-header.is-solid .nav-links a{color:var(--ink);font-size:18px;line-height:56px;padding:0 14px;border-radius:10px;}
  .nav-links a.active,.site-header.is-solid .nav-links a.active{color:var(--brand);background:var(--brand-soft);}
  .nav-cta{position:fixed;left:20px;right:20px;bottom:20px;z-index:210;display:none;justify-content:center;}
  .nav-cta.is-open{display:inline-flex;}
  .page-hero{padding:118px 0 52px;}
  .grid-3,.grid-2{grid-template-columns:1fr;}
  .split{grid-template-columns:1fr;gap:26px;}
  .split + .split{margin-top:56px;}
  .foot-grid{grid-template-columns:1fr;}
  .cta-band{padding:64px 0;}
}
@media screen and (max-width:520px){
  body{font-size:16px;}
  .page-hero h1{font-size:30px;}
  .btn{width:100%;}
  .pkg-actions .btn{width:100%;}
  .cta-btns .btn{width:100%;}
  .hero-meta{flex-direction:column;gap:8px;}
}

/* roulang page: article */
:root{
  --brand:#0E5A4A;
  --brand-deep:#08241F;
  --brand-soft:#E4F0EC;
  --accent:#F26B21;
  --signal:#17A398;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --ink:#14211E;
  --ink-2:#5A6A66;
  --line:rgba(14,90,74,.12);
  --r-card:16px;
  --r-btn:12px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(8,36,31,.06);
  --sh-2:0 8px 24px rgba(8,36,31,.08);
  --sh-3:0 16px 36px rgba(8,36,31,.14);
  --wrap:1200px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",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;
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;line-height:1.3;font-weight:700;color:var(--ink)}
p{margin:0}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
button{font-family:inherit}
ul,ol{margin:0;padding:0}
li{list-style:none}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
@media (min-width:1024px){.wrap{padding:0 32px}}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  background:rgba(8,36,31,.28);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.18);
  box-shadow:0 6px 26px rgba(8,36,31,.16);
  transition:background .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.site-header.is-solid{
  background:#fff;
  border-bottom-color:var(--line);
  box-shadow:var(--sh-1);
}
.nav-inner{
  max-width:var(--wrap);margin:0 auto;padding:0 20px;
  height:68px;display:flex;align-items:center;gap:18px;
}
@media (min-width:1024px){.nav-inner{padding:0 32px}}
.logo{display:flex;align-items:center;gap:10px;font-size:17.5px;font-weight:800;color:#fff;letter-spacing:-.01em;white-space:nowrap}
.logo:hover{text-decoration:none}
.logo-mark{
  width:34px;height:34px;border-radius:10px;background:var(--accent);color:#fff;
  display:grid;place-items:center;font-family:var(--mono);font-size:15px;font-weight:800;letter-spacing:0;
}
.site-header.is-solid .logo{color:var(--ink)}
.nav-links{display:none;align-items:center;gap:4px;margin-left:14px}
.nav-links a{
  color:rgba(255,255,255,.88);font-size:15.5px;font-weight:500;
  padding:9px 14px;border-radius:10px;transition:background .18s ease,color .18s ease;
}
.nav-links a:hover{background:rgba(255,255,255,.14);color:#fff;text-decoration:none}
.nav-links a.active{background:rgba(255,255,255,.2);color:#fff;font-weight:600}
.site-header.is-solid .nav-links a{color:var(--ink-2)}
.site-header.is-solid .nav-links a:hover{background:var(--brand-soft);color:var(--brand)}
.site-header.is-solid .nav-links a.active{background:var(--brand-soft);color:var(--brand)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-search{
  display:none;align-items:center;gap:6px;font-size:14.5px;font-weight:500;
  color:rgba(255,255,255,.88);padding:8px 12px;border-radius:10px;transition:background .18s ease;
}
.nav-search:hover{background:rgba(255,255,255,.14);color:#fff;text-decoration:none}
.site-header.is-solid .nav-search{color:var(--ink-2)}
.site-header.is-solid .nav-search:hover{background:var(--brand-soft);color:var(--brand)}
@media (min-width:1024px){.nav-search{display:inline-flex}}
.burger{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.35);
  background:transparent;color:#fff;font-size:17px;cursor:pointer;transition:background .18s ease;
}
.burger:hover{background:rgba(255,255,255,.14)}
.site-header.is-solid .burger{color:var(--ink);border-color:var(--line)}
.site-header.is-solid .burger:hover{background:var(--brand-soft)}
@media (min-width:768px){.burger{display:none}}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);padding:13px 24px;font-size:15.5px;font-weight:600;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:#0b4a3d;box-shadow:var(--sh-2);color:#fff}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#d95c17;box-shadow:var(--sh-2);color:#fff}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff}
.btn-outline{background:transparent;color:var(--brand);border-color:var(--line)}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand)}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:10px}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  border-radius:999px;font-size:12px;font-weight:600;
  padding:4px 12px;line-height:1.6;letter-spacing:.01em;
}
.badge-soft{background:var(--brand-soft);color:var(--brand)}
.badge-head{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.22)}
.badge-signal{background:rgba(23,163,152,.14);color:#0f7a72}

/* ============ 文章头 ============ */
.page-head{
  position:relative;color:#fff;overflow:hidden;
  padding:134px 0 58px;
  background:var(--brand-deep) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(8,36,31,.84) 0%,rgba(8,36,31,.93) 62%,rgba(8,36,31,.97) 100%);
}
.page-head::after{
  content:"";position:absolute;inset:0;opacity:.06;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:22px 22px;
}
.page-head .wrap{position:relative;z-index:1}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:rgba(255,255,255,.66);margin-bottom:18px;
}
.breadcrumb a{color:rgba(255,255,255,.82)}
.breadcrumb a:hover{color:#fff;text-decoration:underline}
.breadcrumb .sep{opacity:.55}
.breadcrumb .current{color:rgba(255,255,255,.6);max-width:62ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.page-head h1{
  color:#fff;font-size:34px;font-weight:800;letter-spacing:-.02em;line-height:1.2;
  margin:16px 0 20px;max-width:940px;
}
@media (min-width:768px){.page-head h1{font-size:44px}}
@media (min-width:1024px){.page-head h1{font-size:50px}}
.post-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  font-family:var(--mono);font-size:13.5px;color:rgba(255,255,255,.72);
}
.post-meta span{display:inline-flex;align-items:center;gap:7px}
.post-meta i{font-size:12.5px;opacity:.85}

/* ============ 文章主体布局 ============ */
.post-wrap{padding:56px 0 76px}
.post-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:32px}
@media (min-width:992px){
  .post-layout{grid-template-columns:minmax(0,1fr) 320px;gap:44px;align-items:start}
}
.post-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:26px 22px;
}
@media (min-width:768px){.post-card{padding:40px 44px}}
.post-main{min-width:0}
.post-body{max-width:820px;font-size:16.5px;line-height:1.85;color:var(--ink);word-wrap:break-word}
.post-body > *:first-child{margin-top:0}
.post-body p{margin:0 0 1.2em}
.post-body > p:first-of-type{font-size:17.5px;color:#20302c}
.post-body h2{
  font-size:25px;line-height:1.4;margin:40px 0 16px;padding-left:14px;
  border-left:3px solid var(--brand);
}
.post-body h3{font-size:20px;margin:28px 0 12px}
.post-body h4{font-size:17.5px;margin:22px 0 10px}
.post-body ul,.post-body ol{margin:0 0 1.2em;padding-left:1.4em}
.post-body ul li{list-style:disc;margin:.42em 0}
.post-body ol li{list-style:decimal;margin:.42em 0}
.post-body ul li::marker,.post-body ol li::marker{color:var(--brand);font-weight:700}
.post-body img{border-radius:12px;margin:18px 0}
.post-body figure{margin:22px 0}
.post-body figcaption{font-size:13px;color:var(--ink-2);text-align:center;margin-top:8px}
.post-body blockquote{
  margin:22px 0;padding:16px 20px;background:var(--brand-soft);
  border-left:3px solid var(--brand);border-radius:0 12px 12px 0;color:#25443d;
}
.post-body blockquote p:last-child{margin-bottom:0}
.post-body code{font-family:var(--mono);font-size:.9em;background:#eef3f1;padding:.15em .45em;border-radius:6px;color:#0c4a3d}
.post-body pre{background:#0d221d;color:#dcece7;padding:16px 18px;border-radius:12px;overflow-x:auto;margin:0 0 1.2em}
.post-body pre code{background:none;color:inherit;padding:0;font-size:14px}
.post-body table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15px}
.post-body th{background:var(--brand-soft);color:var(--brand);text-align:left;font-weight:700}
.post-body th,.post-body td{border:1px solid var(--line);padding:10px 12px}
.post-body tbody tr:nth-child(even){background:#faf9f6}
.post-body a{text-decoration:underline;text-underline-offset:3px}
.post-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.post-body strong{font-weight:700}

/* ============ 空态 ============ */
.empty-state{
  padding:60px 20px;text-align:center;color:var(--ink-2);
  display:flex;flex-direction:column;align-items:center;gap:12px;
}
.empty-state i{font-size:34px;color:var(--signal);opacity:.75}
.empty-state .empty-title{font-size:19px;font-weight:700;color:var(--ink)}
.empty-state .empty-tip{font-size:14.5px;max-width:46ch;line-height:1.75}
.empty-state .btn{margin-top:8px}

/* ============ 文末操作条 ============ */
.post-foot{
  margin-top:24px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);padding:24px 22px;
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;justify-content:space-between;
}
@media (min-width:768px){.post-foot{padding:26px 32px}}
.post-foot .foot-note{font-size:14px;color:var(--ink-2);max-width:44ch;line-height:1.7}
.post-foot .foot-actions{display:flex;flex-wrap:wrap;gap:10px}

/* ============ 相关推荐 ============ */
.rel-block{margin-top:44px}
.rel-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:20px}
.rel-head h2{font-size:23px;letter-spacing:-.01em}
.rel-head a{font-size:14px;color:var(--brand);font-weight:600}
.rel-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:640px){.rel-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.rel-grid{grid-template-columns:repeat(3,1fr)}}
.rel-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);text-decoration:none}
.rel-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px}
.rel-body h3{font-size:17px;line-height:1.5;color:var(--ink);transition:color .18s ease}
.rel-card:hover .rel-body h3{color:var(--brand)}
.rel-body p{font-size:14px;color:var(--ink-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-more{font-size:13px;font-family:var(--mono);color:var(--brand);display:flex;align-items:center;gap:6px}

/* ============ 侧栏 ============ */
.post-side{display:flex;flex-direction:column;gap:20px}
@media (min-width:992px){.post-side{position:sticky;top:92px}}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:20px 20px 22px;
}
.side-title{
  font-size:14px;font-weight:700;color:var(--ink);margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.side-title i{color:var(--signal);font-size:13px}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;font-size:14px;color:var(--ink-2);padding:7px 10px;border-radius:8px;
  border-left:2px solid transparent;transition:background .18s ease,color .18s ease,border-color .18s ease;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.toc-list a:hover,.toc-list a.active{background:var(--brand-soft);color:var(--brand);border-left-color:var(--brand);text-decoration:none}
.side-links{display:flex;flex-direction:column;gap:10px}
.side-links a{
  display:flex;align-items:center;gap:10px;font-size:14.5px;color:var(--ink);
  padding:11px 12px;border:1px solid var(--line);border-radius:10px;
  transition:background .18s ease,border-color .18s ease,color .18s ease;
}
.side-links a:hover{background:var(--brand-soft);border-color:transparent;color:var(--brand);text-decoration:none}
.side-links a i{color:var(--signal);font-size:14px;width:18px;text-align:center}
.side-cta{
  background:var(--accent);border-radius:var(--r-card);padding:24px 22px;color:#fff;
  box-shadow:0 10px 26px rgba(242,107,33,.26);
}
.side-cta .side-cta-h{font-size:17px;font-weight:800;color:#fff;margin-bottom:8px}
.side-cta p{font-size:13.5px;line-height:1.72;color:rgba(255,255,255,.92);margin-bottom:16px}
.side-cta .btn-white{
  background:#fff;color:var(--accent);font-weight:700;padding:11px 18px;font-size:14.5px;
  border-radius:var(--r-btn);display:inline-flex;align-items:center;gap:8px;
}
.side-cta .btn-white:hover{background:#fdf3ec;text-decoration:none;transform:translateY(-1px)}
.side-cta .side-meta{
  margin-top:14px;font-family:var(--mono);font-size:12px;color:rgba(255,255,255,.85);
  display:flex;flex-wrap:wrap;gap:6px 14px;
}

/* ============ 下载 CTA 带 ============ */
.cta-band{
  background:var(--brand-deep);color:#fff;padding:72px 0;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;opacity:.05;pointer-events:none;
  background-image:repeating-linear-gradient(8deg,rgba(255,255,255,.7) 0 1px,transparent 1px 14px);
}
.cta-band .wrap{position:relative;z-index:1;text-align:center}
.cta-band h2{color:#fff;font-size:30px;letter-spacing:-.015em;margin-bottom:14px}
@media (min-width:768px){.cta-band h2{font-size:36px}}
.cta-band p{color:rgba(255,255,255,.76);font-size:15.5px;max-width:62ch;margin:0 auto 30px;line-height:1.8}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.cta-note{
  margin-top:26px;font-family:var(--mono);font-size:12.5px;color:rgba(255,255,255,.58);
  display:flex;flex-wrap:wrap;gap:8px 22px;justify-content:center;
}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.72);padding:64px 0 28px}
.foot-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:640px){.foot-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.foot-brand{
  display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:#fff;margin-bottom:14px;
}
.foot-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:38ch}
.foot-h{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{
  font-size:14px;color:rgba(255,255,255,.66);transition:color .18s ease,transform .18s ease;
  display:inline-block;width:fit-content;
}
.foot-links a:hover{color:#fff;transform:translateX(2px);text-decoration:none}
.foot-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(255,255,255,.62);line-height:1.75}
.foot-contact i{color:var(--signal);margin-right:8px}
.foot-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}
.foot-bottom a{color:rgba(255,255,255,.6)}
.foot-bottom a:hover{color:#fff}

/* ============ 移动端抽屉 ============ */
@media (max-width:767px){
  .nav-links{
    display:none;position:fixed;top:68px;left:0;right:0;bottom:0;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    margin:0;padding:12px 20px 28px;overflow-y:auto;
    transform:translateY(-8px);opacity:0;visibility:hidden;
    transition:transform .22s ease,opacity .22s ease,visibility .22s;
    box-shadow:var(--sh-2);
  }
  .nav-links.is-open{display:flex;transform:none;opacity:1;visibility:visible}
  .nav-links a{
    color:var(--ink);font-size:18px;line-height:56px;padding:0 6px;border-radius:0;
    border-bottom:1px solid var(--line);
  }
  .nav-links a:hover,.nav-links a.active{background:transparent;color:var(--brand);font-weight:700}
  .nav-cta{padding:9px 14px;font-size:14px}
}
@media (max-width:520px){
  .logo span:last-child{font-size:16px}
  .page-head{padding:118px 0 44px}
  .post-wrap{padding:36px 0 56px}
  .post-card{padding:22px 18px}
  .post-foot{flex-direction:column;align-items:flex-start}
  .cta-band{padding:56px 0}
}

/* roulang page: category2 */
:root{
  --brand:#0E5A4A;
  --brand-deep:#08241F;
  --brand-soft:#E4F0EC;
  --accent:#F26B21;
  --signal:#17A398;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --ink:#14211E;
  --ink-2:#5A6A66;
  --line:rgba(14,90,74,.12);
  --r-card:16px;
  --r-btn:12px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(8,36,31,.06);
  --sh-2:0 8px 24px rgba(8,36,31,.08);
  --sh-3:0 16px 36px rgba(8,36,31,.14);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --wrap:1200px;
  --sec-y:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,background .18s ease;}
a:visited{color:var(--brand);}
a:hover{color:var(--brand-deep);}
img{max-width:100%;display:block;}
button{font:inherit;cursor:pointer;}
::selection{background:var(--brand-soft);color:var(--brand-deep);}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 32px;width:100%;}
.section{padding:var(--sec-y) 0;}
.section--soft{background:var(--brand-soft);}
.section--paper{background:var(--surface);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{font-size:36px;font-weight:700;line-height:1.25;letter-spacing:-.01em;color:var(--brand-deep);}
.section-head p{margin-top:14px;color:var(--ink-2);font-size:16.5px;}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--signal);text-transform:uppercase;margin-bottom:12px;}

/* 导航 */
.site-header{
  position:absolute;top:0;left:0;right:0;z-index:60;
  background:rgba(8,36,31,.28);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.18);
  box-shadow:0 6px 24px rgba(8,36,31,.14);
  transition:background .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.site-header.is-stuck{
  position:fixed;
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-2);
}
.nav-inner{
  max-width:var(--wrap);margin:0 auto;padding:14px 32px;
  display:flex;align-items:center;gap:22px;
}
.logo{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff;letter-spacing:-.01em;flex:0 0 auto;}
.logo:hover{color:#fff;}
.logo-mark{
  display:grid;place-items:center;width:36px;height:36px;border-radius:11px;
  background:var(--accent);color:#fff;font-weight:800;font-size:16px;letter-spacing:.02em;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-links a{
  color:rgba(255,255,255,.88);font-size:15px;font-weight:600;
  padding:9px 15px;border-radius:999px;transition:all .18s ease;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.16);}
.nav-links a.active{color:#fff;background:rgba(255,255,255,.22);}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-search{
  display:inline-flex;align-items:center;gap:7px;
  color:rgba(255,255,255,.88);font-size:14.5px;font-weight:600;
  padding:8px 14px;border-radius:999px;border:1px solid rgba(255,255,255,.28);
}
.nav-search:hover{color:#fff;background:rgba(255,255,255,.14);}
.burger{
  display:none;place-items:center;width:42px;height:42px;border-radius:12px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);color:#fff;font-size:18px;
}
/* 浅色 Hero 上的导航初始态 */
.site-header.on-light{
  background:rgba(255,255,255,.66);
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.site-header.on-light .logo{color:var(--ink);}
.site-header.on-light .nav-links a{color:var(--ink-2);}
.site-header.on-light .nav-links a:hover{color:var(--brand);background:var(--brand-soft);}
.site-header.on-light .nav-links a.active{color:var(--brand);background:var(--brand-soft);}
.site-header.on-light .nav-search{color:var(--ink-2);border-color:var(--line);}
.site-header.on-light .nav-search:hover{color:var(--brand);background:var(--brand-soft);}
.site-header.on-light .burger{background:var(--brand-soft);border-color:var(--line);color:var(--brand);}
/* 吸顶态统一为白底深字 */
.site-header.is-stuck .logo{color:var(--ink);}
.site-header.is-stuck .nav-links a{color:var(--ink-2);}
.site-header.is-stuck .nav-links a:hover{color:var(--brand);background:var(--brand-soft);}
.site-header.is-stuck .nav-links a.active{color:var(--brand);background:var(--brand-soft);}
.site-header.is-stuck .nav-search{color:var(--ink-2);border-color:var(--line);}
.site-header.is-stuck .nav-search:hover{color:var(--brand);background:var(--brand-soft);}
.site-header.is-stuck .burger{background:var(--brand-soft);border-color:var(--line);color:var(--brand);}

/* 移动端抽屉 */
.mobile-mask{
  position:fixed;inset:0;background:rgba(8,36,31,.45);opacity:0;visibility:hidden;
  transition:opacity .26s ease,visibility .26s ease;z-index:70;
}
.mobile-mask.show{opacity:1;visibility:visible;}
.mobile-panel{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);background:#fff;z-index:80;
  transform:translateX(102%);transition:transform .28s ease;
  display:flex;flex-direction:column;padding:22px 22px 26px;box-shadow:var(--sh-3);
}
.mobile-panel.open{transform:translateX(0);}
.mp-head{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:var(--ink);padding-bottom:18px;border-bottom:1px solid var(--line);}
.mp-links{display:flex;flex-direction:column;margin:10px 0 auto;}
.mp-links a{
  display:flex;align-items:center;font-size:18px;line-height:56px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.mp-links a.active{color:var(--brand);}
.mp-links a:hover{color:var(--brand);}

/* 按钮族 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);font-size:15.5px;font-weight:700;
  border:1px solid transparent;cursor:pointer;transition:all .2s ease;white-space:nowrap;
}
.btn:visited{color:inherit;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:#0a4739;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--sh-1);}
.btn-accent:hover{background:#d95c18;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand);border-color:transparent;}
.btn-light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.34);}
.btn-light:hover{background:rgba(255,255,255,.24);color:#fff;transform:translateY(-1px);}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;}

/* 徽章与标签 */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:700;line-height:1.6;
}
.badge-brand{background:var(--brand-soft);color:var(--brand);}
.badge-signal{background:rgba(23,163,152,.14);color:#0d7367;}
.badge-accent{background:rgba(242,107,33,.14);color:#c14e0d;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);font-size:13.5px;font-weight:600;color:var(--ink-2);
}
.tag i{color:var(--signal);}

/* 窄 Hero */
.page-hero{
  position:relative;overflow:hidden;background:var(--brand-soft);
  padding:150px 0 70px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(14,90,74,.16) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;pointer-events:none;
}
.page-hero .hero-grid{
  position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center;
}
.crumbs{font-size:13px;color:var(--ink-2);margin-bottom:16px;display:flex;gap:8px;flex-wrap:wrap;}
.crumbs a{color:var(--ink-2);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:rgba(20,33,30,.32);}
.page-hero h1{
  font-size:48px;font-weight:800;line-height:1.15;letter-spacing:-.02em;color:var(--brand-deep);
  margin:14px 0 16px;
}
.hero-lead{font-size:17px;color:var(--ink-2);max-width:620px;}
.hero-lead strong{color:var(--brand);font-weight:700;}
.anchor-nav{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.anchor-nav a{
  display:inline-flex;align-items:center;gap:7px;padding:8px 15px;border-radius:999px;
  background:rgba(255,255,255,.78);border:1px solid var(--line);
  font-size:14px;font-weight:600;color:var(--brand);
}
.anchor-nav a:hover{background:#fff;box-shadow:var(--sh-1);transform:translateY(-1px);}
.hero-media{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-2);background:#fff;aspect-ratio:4/3;
}
.hero-media img{width:100%;height:100%;object-fit:cover;}

/* 通用卡片 */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-4px);}
.card-body{padding:26px;}
.card h3{font-size:19px;font-weight:700;line-height:1.45;color:var(--ink);}
.card p{margin-top:10px;font-size:15px;color:var(--ink-2);}

/* 图文交替 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;}
.split--rev .split-media{order:2;}
.media-frame{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-2);background:var(--brand-soft);aspect-ratio:16/11;
}
.media-frame img{width:100%;height:100%;object-fit:cover;}
.split h2{font-size:34px;font-weight:700;line-height:1.25;color:var(--brand-deep);letter-spacing:-.01em;}
.split .lead{margin-top:14px;color:var(--ink-2);}

.check-list{margin-top:26px;display:flex;flex-direction:column;gap:14px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;}
.check-list i{color:var(--signal);margin-top:6px;font-size:15px;flex:0 0 auto;}
.check-list b{font-weight:700;color:var(--ink);}

/* 编号模块列表 */
.module-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:start;}
.module-list{display:flex;flex-direction:column;gap:14px;}
.module-item{
  display:grid;grid-template-columns:auto 1fr;gap:20px;align-items:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--sh-1);transition:all .22s ease;
}
.module-item:hover{border-color:rgba(14,90,74,.3);box-shadow:var(--sh-2);transform:translateY(-3px);}
.module-num{
  font-family:var(--mono);font-size:14px;font-weight:700;color:var(--brand);
  background:var(--brand-soft);border-radius:10px;padding:6px 11px;line-height:1.4;
}
.module-item h3{font-size:17.5px;font-weight:700;}
.module-item p{margin-top:8px;font-size:14.8px;color:var(--ink-2);}
.side-media{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-2);background:var(--brand-soft);aspect-ratio:3/4;position:sticky;top:96px;
}
.side-media img{width:100%;height:100%;object-fit:cover;}

/* 兼容矩阵 */
.matrix-scroll{
  display:flex;gap:20px;overflow-x:auto;padding:6px 4px 18px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.matrix-card{
  flex:0 0 306px;min-width:306px;scroll-snap-align:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:24px;transition:all .22s ease;
}
.matrix-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px);}
.matrix-head{display:flex;align-items:center;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line);}
.matrix-ico{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);font-size:18px;
}
.matrix-head strong{display:block;font-size:16.5px;font-weight:700;}
.spec-row{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px dashed var(--line);}
.spec-row:last-child{border-bottom:0;}
.spec-k{font-size:13.5px;color:var(--ink-2);flex:0 0 auto;}
.spec-v{font-family:var(--mono);font-size:13px;color:var(--ink);text-align:right;line-height:1.6;}
.scroll-hint{font-size:13.5px;color:var(--ink-2);display:flex;align-items:center;gap:8px;margin-top:2px;}

/* 时间线 */
.timeline{position:relative;padding-left:30px;max-width:880px;}
.timeline::before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;background:var(--line);}
.tl-item{position:relative;padding:0 0 26px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:9px;width:14px;height:14px;border-radius:50%;
  background:var(--surface);border:3px solid var(--signal);
}
.tl-meta{font-family:var(--mono);font-size:13px;color:var(--brand);font-weight:700;}
.tl-item h3{font-size:17.5px;font-weight:700;margin-top:6px;}
.tl-item p{margin-top:6px;color:var(--ink-2);font-size:15px;}

/* 提示条 */
.notice{
  display:flex;gap:14px;align-items:flex-start;
  background:rgba(242,107,33,.08);border:1px solid rgba(242,107,33,.24);
  border-radius:var(--r-card);padding:18px 22px;margin-bottom:32px;
}
.notice i{color:var(--accent);font-size:18px;margin-top:3px;}
.notice p{font-size:14.8px;color:#8c3c0a;}

/* 清单列 */
.list-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px 32px;}
.list-grid li{
  display:flex;gap:14px;align-items:flex-start;background:var(--surface);
  border:1px solid var(--line);border-radius:14px;padding:18px 20px;font-size:15px;
  transition:all .2s ease;
}
.list-grid li:hover{border-color:rgba(14,90,74,.3);box-shadow:var(--sh-1);}
.list-idx{
  font-family:var(--mono);font-size:13px;font-weight:700;color:#fff;background:var(--signal);
  border-radius:8px;padding:3px 9px;line-height:1.6;flex:0 0 auto;
}
.list-grid b{display:block;font-weight:700;margin-bottom:4px;}
.list-grid span.desc{color:var(--ink-2);font-size:14.5px;}

/* FAQ */
.faq-wrap{max-width:880px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(14,90,74,.35);box-shadow:var(--sh-1);}
.faq-item.open{border-color:var(--brand);box-shadow:var(--sh-1);}
.faq-q{
  width:100%;background:none;border:0;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;font-size:17px;font-weight:700;color:var(--ink);
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);font-size:13px;transition:transform .22s ease,background .22s ease,color .22s ease;
}
.faq-item.open .faq-icon{background:var(--accent);color:#fff;transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-a-inner{padding:0 22px 20px;color:var(--ink-2);font-size:15.2px;}

/* CTA */
.cta-band{
  position:relative;background:var(--brand-deep);color:#fff;padding:92px 0;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:24px 24px;opacity:.4;pointer-events:none;
}
.cta-inner{position:relative;text-align:center;max-width:800px;margin:0 auto;}
.cta-inner h2{font-size:36px;font-weight:800;line-height:1.25;letter-spacing:-.01em;}
.cta-inner p{margin-top:14px;color:rgba(255,255,255,.78);font-size:16.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:34px;}
.cta-meta{
  margin-top:26px;display:flex;flex-wrap:wrap;gap:10px 26px;justify-content:center;
  font-family:var(--mono);font-size:13px;color:rgba(255,255,255,.66);
}
.cta-meta span{display:inline-flex;align-items:center;gap:8px;}
.cta-meta i{color:var(--signal);}

/* 页脚 */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.72);padding:72px 0 28px;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;}
.foot-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:800;margin-bottom:16px;}
.foot-about{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px;}
.foot-h{color:#fff;font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:.02em;}
.foot-links{display:flex;flex-direction:column;gap:11px;}
.foot-links a{color:rgba(255,255,255,.66);font-size:14px;transition:all .18s ease;}
.foot-links a:hover{color:#fff;transform:translateX(2px);}
.foot-contact{display:flex;flex-direction:column;gap:13px;font-size:14px;color:rgba(255,255,255,.62);}
.foot-contact span{display:flex;gap:9px;align-items:flex-start;line-height:1.7;}
.foot-contact i{color:var(--signal);margin-top:5px;font-size:13px;}
.foot-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.55);
}
.foot-bottom a{color:rgba(255,255,255,.66);}
.foot-bottom a:hover{color:#fff;}

/* 响应式 */
@media (max-width:1024px){
  :root{--sec-y:72px;}
  .nav-inner{padding:12px 24px;}
  .wrap{padding:0 24px;}
  .page-hero{padding:132px 0 56px;}
  .page-hero .hero-grid{grid-template-columns:1fr;gap:36px;}
  .page-hero h1{font-size:38px;}
  .module-grid{grid-template-columns:1fr;gap:36px;}
  .side-media{position:static;aspect-ratio:16/10;}
  .split{grid-template-columns:1fr;gap:36px;}
  .split--rev .split-media{order:0;}
  .section-head h2{font-size:30px;}
  .split h2{font-size:28px;}
  .cta-inner h2{font-size:30px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .nav-links,.nav-search{display:none;}
  .burger{display:grid;}
  .section-head{margin-bottom:32px;}
  .page-hero h1{font-size:31px;}
  .page-hero{padding:120px 0 48px;}
  .list-grid{grid-template-columns:1fr;}
  .module-item{grid-template-columns:1fr;gap:12px;}
  .cta-band{padding:68px 0;}
  .cta-inner h2{font-size:26px;}
  .cta-actions .btn{width:100%;}
  .foot-grid{grid-template-columns:1fr;gap:30px;}
  .timeline{padding-left:22px;}
  .tl-item::before{left:-22px;}
}
@media (max-width:520px){
  .wrap{padding:0 18px;}
  .nav-inner{padding:10px 18px;}
  .logo{font-size:16px;}
  .page-hero h1{font-size:27px;}
  .section-head h2{font-size:25px;}
  .split h2{font-size:24px;}
  .matrix-card{flex:0 0 84vw;min-width:84vw;}
  .cta-inner h2{font-size:23px;}
}