/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --ink:#0C1614;
  --brand:#123A34;
  --brand-soft:#1B4F47;
  --lime:#3CE0A0;
  --lime-soft:rgba(60,224,160,.14);
  --amber:#F2A03D;
  --amber-soft:rgba(242,160,61,.16);
  --bg:#F6F4EF;
  --bg-soft:#FBFAF6;
  --card:#FFFFFF;
  --text:#1E2523;
  --muted:#5C6764;
  --line:#E3E0D8;
  --line-dark:rgba(255,255,255,.14);
  --on-dark:rgba(255,255,255,.78);
  --r-card:18px;
  --r-img:14px;
  --r-btn:999px;
  --sh-1:0 1px 2px rgba(12,22,20,.04);
  --sh-2:0 14px 34px -14px rgba(12,22,20,.18);
  --ease:cubic-bezier(.2,.8,.2,1);
  --dur:240ms;
  --t:var(--dur) var(--ease);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --font-sans:"HarmonyOS Sans","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sec-y:104px;
}
/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:var(--font-sans);font-size:17px;line-height:1.9;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none}
a:hover,a:focus{color:var(--brand);text-decoration:none}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:800;line-height:1.25;letter-spacing:-.02em;color:var(--brand)}
button{font-family:inherit;font-size:inherit}
input,textarea{font-family:inherit}
::selection{background:var(--lime);color:var(--ink)}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px}
.mono{font-family:var(--font-mono);font-feature-settings:"tnum"}

/* ============ 容器与板块 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec-y) 0;position:relative;scroll-margin-top:96px}
.section-tint{background:var(--bg-soft)}
.section-dark{background:var(--ink);color:var(--on-dark)}
.section-dark h2,.section-dark h3{color:#fff}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:48px;flex-wrap:wrap}
.section-head .head-text{max-width:660px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.14em;color:var(--amber);font-weight:700;text-transform:uppercase;margin-bottom:14px}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--amber);display:inline-block}
.section-title{font-size:clamp(1.6rem,3vw,2.4rem)}
.section-desc{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.9}
.section-dark .section-desc{color:var(--on-dark)}
.text-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--brand);border-bottom:1px solid var(--line);padding-bottom:4px;transition:color var(--t),border-color var(--t)}
.text-link::after{content:"→";transition:transform var(--t)}
.text-link:hover{color:var(--brand-soft);border-color:var(--lime)}
.text-link:hover::after{transform:translateX(4px)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 26px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:700;line-height:1.4;cursor:pointer;white-space:nowrap;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
}
.btn-primary{background:var(--lime);color:var(--ink);box-shadow:0 10px 24px -14px rgba(60,224,160,.95)}
.btn-primary:hover{background:#57e6b2;color:var(--ink);transform:translateY(-2px);box-shadow:0 18px 34px -16px rgba(60,224,160,.95)}
.btn-ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.52);color:#fff}
.btn-ghost:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px)}
.btn-outline{background:transparent;border-color:var(--line);color:var(--brand)}
.btn-outline:hover{border-color:var(--lime);color:var(--brand);transform:translateY(-2px)}
.btn-dark{background:var(--brand);color:#fff}
.btn-dark:hover{background:var(--brand-soft);color:#fff;transform:translateY(-2px);box-shadow:0 16px 30px -18px rgba(18,58,52,.9)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}

/* ============ 徽章 / 标签 ============ */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12.5px;font-weight:700;line-height:1.7;letter-spacing:.02em}
.badge-amber{background:var(--amber-soft);color:#9A5F14}
.badge-lime{background:var(--lime-soft);color:#12684A}
.badge-ink{background:rgba(12,22,20,.06);color:var(--brand)}
.tag{display:inline-block;padding:6px 14px;border:1px solid var(--line);border-radius:999px;font-size:13px;color:var(--muted);transition:border-color var(--t),color var(--t)}
.tag:hover{border-color:var(--lime);color:var(--brand)}

/* ============ 导航 ============ */
.site-nav{
  position:fixed;top:0;left:0;right:0;z-index:60;height:72px;
  background:rgba(255,255,255,.58);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid rgba(12,22,20,.08);
  transition:background var(--t),border-color var(--t),box-shadow var(--t);
}
.site-nav.is-scrolled{background:rgba(246,244,239,.94);border-bottom-color:var(--line);box-shadow:0 12px 32px -24px rgba(12,22,20,.6)}
.nav-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;flex-direction:column;line-height:1.15;flex:0 0 auto}
.logo-main{font-family:var(--font-serif);font-weight:800;font-size:17px;letter-spacing:-.01em;color:var(--brand)}
.logo-sub{font-size:11px;letter-spacing:.12em;color:var(--muted);margin-top:4px}
.nav-menu{display:flex;align-items:center;gap:30px}
.nav-link{position:relative;padding:8px 2px;font-size:15px;font-weight:600;color:var(--brand);transition:color var(--t)}
.nav-link::after{content:"";position:absolute;left:0;bottom:2px;height:2px;width:100%;background:var(--lime);transform:scaleX(0);transform-origin:left center;transition:transform var(--t)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-soft)}
.nav-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.nav-search{position:relative;display:flex;align-items:center}
.nav-search input{
  width:180px;height:40px;padding:0 16px;border:1px solid var(--line);border-radius:999px;
  background:rgba(255,255,255,.7);font-size:14px;color:var(--text);transition:border-color var(--t),box-shadow var(--t),width var(--t);
}
.nav-search input::placeholder{color:#98A19E}
.nav-search input:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 3px var(--lime-soft);width:210px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:rgba(255,255,255,.7);align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px;transition:transform var(--t),opacity var(--t)}
.nav-drawer{
  position:fixed;inset:0;z-index:80;background:rgba(12,22,20,.96);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  padding:96px 28px 40px;display:flex;flex-direction:column;gap:4px;
  transform:translateX(102%);transition:transform 280ms var(--ease);
}
.nav-drawer.is-open{transform:translateX(0)}
.nav-drawer a.drawer-link{color:#fff;font-family:var(--font-serif);font-size:24px;font-weight:700;padding:18px 4px;border-bottom:1px solid var(--line-dark);min-height:44px;display:flex;align-items:center;transition:color var(--t),padding-left var(--t)}
.nav-drawer a.drawer-link:hover{color:var(--lime);padding-left:12px}
.nav-drawer .drawer-cta{margin-top:auto}
.drawer-close{
  position:absolute;top:20px;right:24px;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-dark);background:transparent;color:#fff;font-size:20px;line-height:1;cursor:pointer;
  transition:border-color var(--t),color var(--t);
}
.drawer-close:hover{border-color:var(--lime);color:var(--lime)}

/* ============ Hero ============ */
.hero{
  position:relative;display:flex;align-items:center;min-height:76vh;
  padding:158px 0 96px;color:#fff;overflow:hidden;
  background-image:linear-gradient(115deg,rgba(12,22,20,.88) 0%,rgba(12,22,20,.66) 48%,rgba(12,22,20,.36) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
}
.hero .container{position:relative;z-index:2}
.hero-tag{display:inline-flex;align-items:center;gap:10px;padding:7px 16px;border:1px solid var(--line-dark);border-radius:999px;font-size:13px;color:rgba(255,255,255,.86);background:rgba(255,255,255,.06);margin-bottom:26px}
.hero-tag i{width:7px;height:7px;border-radius:50%;background:var(--lime);display:inline-block;box-shadow:0 0 0 4px rgba(60,224,160,.18)}
.hero h1{
  color:#fff;font-size:clamp(2.2rem,5.6vw,4.2rem);max-width:16em;margin-bottom:24px;
}
.hero h1 em{font-style:normal;color:var(--lime)}
.hero-sub{max-width:600px;font-size:clamp(1rem,1.5vw,1.15rem);color:rgba(255,255,255,.82);line-height:1.9;margin-bottom:38px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:54px}
.hero-strip{
  display:flex;flex-wrap:wrap;gap:0;border-top:1px solid var(--line-dark);padding-top:26px;
}
.hero-strip .strip-item{padding:0 34px;border-left:1px solid var(--line-dark);min-width:170px}
.hero-strip .strip-item:first-child{border-left:0;padding-left:0}
.strip-label{font-size:12.5px;letter-spacing:.1em;color:rgba(255,255,255,.55);margin-bottom:6px}
.strip-value{font-size:16px;font-weight:700;color:#fff}

/* ============ 目录行 ============ */
.catalog{border-top:1px solid var(--line)}
.catalog-item{border-bottom:1px solid var(--line)}
.catalog-link{
  display:grid;grid-template-columns:88px 1fr 112px 44px;align-items:center;gap:28px;
  padding:22px 16px;border-radius:16px;transition:background var(--t),padding-left var(--t);
}
.catalog-link:hover{background:#F1EFE9;padding-left:26px}
.catalog-num{font-family:var(--font-mono);font-size:clamp(1.5rem,2.4vw,2rem);font-weight:600;color:var(--amber);line-height:1}
.catalog-title{font-family:var(--font-serif);font-size:20px;font-weight:700;color:var(--brand);margin-bottom:6px}
.catalog-desc{font-size:14.5px;color:var(--muted);line-height:1.8}
.catalog-thumb{width:112px;height:72px;border-radius:12px;overflow:hidden;background:var(--ink)}
.catalog-thumb img{width:100%;height:100%;object-fit:cover}
.catalog-arrow{font-size:20px;color:var(--muted);text-align:right;transition:transform var(--t),color var(--t)}
.catalog-link:hover .catalog-arrow{transform:translateX(6px);color:var(--brand)}

/* ============ 缩略图 ============ */
.thumb{position:relative;overflow:hidden;border-radius:var(--r-img);background:var(--ink)}
.thumb::before{
  content:"";position:absolute;inset:0;z-index:0;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.05) 0 2px,transparent 2px 12px);
}
.thumb img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover;transition:transform 520ms var(--ease)}
.thumb-16-10{aspect-ratio:16 / 10}
.thumb-4-3{aspect-ratio:4 / 3}

/* ============ 卡片 ============ */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;height:100%;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(60,224,160,.7)}
.card-body{padding:24px 24px 26px}
.card-title{font-size:20px;line-height:1.45;margin:14px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-title a{color:var(--brand)}
.card-excerpt{font-size:15px;color:var(--muted);line-height:1.85;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:20px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.card-lg .card-title{font-size:clamp(1.25rem,2.2vw,1.7rem)}
.card-lg .card-excerpt{-webkit-line-clamp:3;font-size:16px}

/* 横向长卡 */
.card-row{display:flex;gap:0;align-items:stretch}
.card-row .thumb{flex:0 0 260px;border-radius:0}
.card-row .card-body{padding:26px 28px}
.card-row + .card-row{margin-top:24px}

/* 推荐小卡 */
.mini-card{display:block;height:100%}
.mini-card .thumb{margin-bottom:16px}
.mini-title{font-family:var(--font-serif);font-size:17px;font-weight:700;color:var(--brand);line-height:1.5;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-card:hover .mini-title{color:var(--brand-soft)}

/* ============ 步骤流程 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.step{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:34px 28px 30px;box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.step:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(60,224,160,.7)}
.step-num{font-family:var(--font-mono);font-size:34px;font-weight:600;color:var(--amber);line-height:1;margin-bottom:18px}
.step h3{font-size:19px;margin-bottom:12px}
.step p{font-size:15px;color:var(--muted);line-height:1.85}
.step::after{content:"";position:absolute;left:0;top:0;width:100%;height:3px;border-radius:var(--r-card) var(--r-card) 0 0;background:linear-gradient(90deg,var(--lime),transparent);opacity:0;transition:opacity var(--t)}
.step:hover::after{opacity:1}

/* ============ 最新信息 ============ */
.feed-grid{margin-bottom:-26px}
.feed-card{
  display:flex;flex-direction:column;height:100%;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.feed-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(60,224,160,.7)}
.feed-body{padding:26px 26px 24px;display:flex;flex-direction:column;flex:1}
.feed-title{font-size:19px;line-height:1.5;margin:14px 0 10px}
.feed-title a{color:var(--brand)}
.feed-excerpt{font-size:15px;color:var(--muted);line-height:1.85;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.feed-meta{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:20px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;
  padding:64px 24px;background:var(--card);border:1px dashed var(--line);border-radius:var(--r-card);
}
.empty-icon{width:56px;height:56px;border-radius:16px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;margin-bottom:20px;color:var(--muted)}
.empty-state p{font-size:16px;color:var(--muted);margin-bottom:22px}

/* ============ 深色 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:22px;padding:52px 48px;
  background-image:linear-gradient(112deg,rgba(12,22,20,.94),rgba(18,58,52,.86)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;color:var(--on-dark);
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:clamp(1.4rem,2.4vw,2rem);margin-bottom:12px}
.cta-band p{color:var(--on-dark);font-size:15.5px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.toast{
  position:fixed;left:50%;bottom:36px;transform:translate(-50%,20px);z-index:90;
  background:var(--lime);color:var(--ink);font-weight:700;font-size:14px;
  padding:12px 24px;border-radius:999px;box-shadow:0 18px 36px -18px rgba(12,22,20,.6);
  opacity:0;pointer-events:none;transition:opacity var(--t),transform var(--t);
}
.toast.is-visible{opacity:1;transform:translate(-50%,0)}

/* ============ FAQ ============ */
.accordion-custom{border:none;background:transparent;margin:0}
.accordion-custom .accordion-item{border:none;border-top:1px solid var(--line);background:transparent}
.accordion-custom .accordion-item:last-child{border-bottom:1px solid var(--line)}
.accordion-custom .accordion-title{
  position:relative;padding:24px 58px 24px 4px;border:none;background:transparent;
  font-family:var(--font-sans);font-size:17px;font-weight:700;color:var(--brand);line-height:1.6;
  transition:color var(--t);
}
.accordion-custom .accordion-title:hover{color:var(--brand-soft)}
.accordion-custom .accordion-title::before{display:none !important;content:none !important}
.accordion-custom .accordion-title::after{
  content:"";position:absolute;right:8px;top:50%;width:16px;height:16px;
  transform:translateY(-50%);
  background-image:linear-gradient(var(--brand),var(--brand)),linear-gradient(var(--brand),var(--brand));
  background-size:16px 2px,2px 16px;background-position:center;background-repeat:no-repeat;
  transition:transform var(--t),background-image var(--t);
}
.accordion-custom .accordion-item.is-active .accordion-title::after{transform:translateY(-50%) rotate(45deg)}
.accordion-custom .accordion-item.is-active .accordion-title{color:var(--brand-soft)}
.accordion-custom .accordion-content{
  padding:0 4px 26px;border:none;background:transparent;color:var(--muted);font-size:16px;line-height:1.9;
}
.accordion-custom .accordion-content p{max-width:900px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:var(--on-dark);padding:82px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:56px}
.footer-brand .footer-logo{font-family:var(--font-serif);font-size:19px;font-weight:800;color:#fff;margin-bottom:16px;display:block}
.footer-brand p{font-size:14.5px;color:var(--on-dark);line-height:1.9;max-width:340px}
.footer-col h4{color:#fff;font-size:15px;font-family:var(--font-sans);font-weight:700;margin-bottom:20px;letter-spacing:.02em}
.footer-col li{margin-bottom:12px}
.footer-col a{position:relative;color:var(--on-dark);font-size:14.5px;transition:color var(--t)}
.footer-col a::after{content:"";position:absolute;left:0;bottom:-3px;width:100%;height:1px;background:var(--lime);transform:scaleX(0);transform-origin:left;transition:transform var(--t)}
.footer-col a:hover{color:var(--lime)}
.footer-col a:hover::after{transform:scaleX(1)}
.footer-bottom{border-top:1px solid var(--line-dark);padding:26px 0 34px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:13.5px;color:rgba(255,255,255,.55)}
.footer-bottom a{color:rgba(255,255,255,.55)}
.footer-bottom a:hover{color:var(--lime)}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .hero-strip .strip-item{padding:0 26px;min-width:150px}
}
@media (max-width:1024px){
  :root{--sec-y:84px}
  .nav-menu,.nav-actions .nav-search{display:none}
  .nav-toggle{display:flex}
  .nav-actions .btn-nav{display:none}
  .hero{min-height:70vh;padding:142px 0 80px}
  .catalog-link{grid-template-columns:70px 1fr 96px 34px;gap:20px}
  .catalog-thumb{width:96px;height:62px}
  .steps{grid-template-columns:1fr;gap:20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:768px){
  :root{--sec-y:60px}
  body{font-size:16px}
  .container{padding:0 18px}
  .site-nav{height:60px}
  .logo-main{font-size:15.5px}
  .logo-sub{font-size:10px;letter-spacing:.08em}
  .section-head{margin-bottom:32px}
  .hero{padding:118px 0 64px;min-height:62vh}
  .hero-sub{font-size:15.5px;margin-bottom:30px}
  .hero-actions{margin-bottom:38px;gap:12px}
  .hero-actions .btn{width:100%}
  .hero-strip{padding-top:20px}
  .hero-strip .strip-item{border-left:0;padding:12px 0;width:100%;border-bottom:1px solid var(--line-dark)}
  .hero-strip .strip-item:last-child{border-bottom:0}
  .catalog-link{grid-template-columns:52px 1fr 26px;gap:14px;padding:18px 8px}
  .catalog-thumb{display:none}
  .catalog-link:hover{padding-left:14px}
  .catalog-title{font-size:17px}
  .card-row{flex-direction:column}
  .card-row .thumb{flex:0 0 auto;border-radius:var(--r-img) var(--r-img) 0 0}
  .card-row .card-body{padding:22px}
  .cta-band{padding:36px 24px;border-radius:18px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:40px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .nav-search input{width:100%}
}
@media (max-width:480px){
  .hero h1{font-size:clamp(1.75rem,8vw,2.2rem)}
  .section-title{font-size:1.45rem}
  .card-body{padding:20px}
  .step{padding:26px 20px 24px}
  .accordion-custom .accordion-title{font-size:16px;padding:20px 50px 20px 2px}
}
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink:#0C1614;
  --brand:#123A34;
  --lime:#3CE0A0;
  --lime-deep:#0F9F6E;
  --amber:#F2A03D;
  --bg:#F6F4EF;
  --card:#FFFFFF;
  --text:#1E2523;
  --muted:#5C6764;
  --line:#E3E0D8;
  --line-soft:#F1EFE9;
  --line-dark:rgba(255,255,255,.14);
  --radius-card:18px;
  --radius-img:14px;
  --radius-btn:999px;
  --shadow-1:0 1px 2px rgba(12,22,20,.04);
  --shadow-2:0 14px 34px -14px rgba(12,22,20,.18);
  --ease:cubic-bezier(.2,.8,.2,1);
  --dur:240ms;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --sans:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.9;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-img)}
a{color:var(--brand);text-decoration:none;transition:color var(--dur) var(--ease),opacity var(--dur) var(--ease)}
a:hover{color:var(--lime-deep)}
button,input{font-family:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px}
.show-for-sr{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.container-read{max-width:760px}
p{margin:0 0 1.1em}
h1,h2,h3,h4{font-family:var(--serif);color:var(--brand);line-height:1.25;letter-spacing:-.02em;font-weight:700;margin:0 0 .6em}
ul,ol{margin:0 0 1.2em;padding-left:1.3em}
li{margin:.4em 0}

/* ---------- 导航 ---------- */
.site-nav{
  position:fixed;top:0;left:0;right:0;z-index:90;
  height:72px;display:flex;align-items:center;
  background:rgba(255,255,255,.55);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid rgba(12,22,20,.08);
  box-shadow:0 1px 2px rgba(12,22,20,.04);
  transition:background var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.site-nav.is-scrolled{
  background:rgba(246,244,239,.94);
  border-bottom-color:var(--line);
  box-shadow:0 12px 30px -20px rgba(12,22,20,.35);
}
.nav-inner{display:flex;align-items:center;gap:28px;width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.logo{display:flex;flex-direction:column;line-height:1.12;flex-shrink:0}
.logo-main{font-family:var(--serif);font-weight:800;font-size:19px;color:var(--brand);letter-spacing:-.01em}
.logo-sub{font-size:11px;color:var(--muted);letter-spacing:.16em;font-family:var(--mono)}
.nav-menu{display:flex;align-items:center;gap:26px;margin-left:12px}
.nav-link{position:relative;font-size:15px;color:var(--text);padding:6px 2px;font-weight:500}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--lime);transition:width var(--dur) var(--ease)}
.nav-link:hover::after,.nav-link.is-active::after{width:100%}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-search input[type=search]{
  width:190px;height:38px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:rgba(255,255,255,.75);
  padding:0 16px;font-size:14px;color:var(--text);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.nav-search input[type=search]::placeholder{color:#8B9491}
.nav-search input[type=search]:focus{border-color:var(--lime);box-shadow:0 0 0 3px rgba(60,224,160,.18);outline:none}
.nav-toggle{display:none;width:44px;height:44px;flex-direction:column;justify-content:center;gap:5px;align-items:center}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--brand);border-radius:2px;transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
  border:1px solid transparent;white-space:nowrap;
}
.btn-primary{background:var(--lime);color:var(--ink);box-shadow:0 8px 20px -12px rgba(15,159,110,.7)}
.btn-primary:hover{background:#4fe8ac;color:var(--ink);transform:translateY(-2px);box-shadow:0 14px 26px -12px rgba(15,159,110,.65)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:rgba(18,58,52,.28);color:var(--brand)}
.btn-ghost:hover{border-color:var(--lime);color:var(--lime-deep);transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-nav{height:40px;padding:0 20px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

/* ---------- 阅读进度条 ---------- */
.read-progress{position:fixed;top:0;left:0;right:0;height:2px;background:transparent;z-index:120}
.read-progress span{display:block;height:100%;width:0;background:var(--lime);transition:width 120ms linear}

/* ---------- 主体 ---------- */
.page-main{padding-top:72px}
.crumbs{padding:26px 0 0;font-size:13px;color:var(--muted);font-family:var(--mono);letter-spacing:.02em}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--lime-deep)}
.crumbs .sep{margin:0 8px;color:#B7BEB9}

.article-head{
  padding:22px 0 52px;
  border-bottom:1px solid var(--line);
  position:relative;
}
.article-head::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(680px 260px at 8% 0%,rgba(60,224,160,.12),transparent 70%);
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
  padding:5px 13px;border-radius:var(--radius-btn);
  background:rgba(242,160,61,.16);color:#9A5E12;
}
.badge-lime{background:rgba(60,224,160,.18);color:#0C6B4A}
.article-head h1{
  font-size:clamp(2rem,4.6vw,3.2rem);
  margin:18px 0 0;line-height:1.22;max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  margin-top:24px;padding-top:20px;border-top:1px solid var(--line-soft);
  font-size:13.5px;color:var(--muted);font-family:var(--mono);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C9CFCA}
.article-meta i{color:var(--lime-deep);margin-right:6px}

/* ---------- 正文 ---------- */
.read-wrap{padding:56px 0 24px}
.article-body{font-size:17.5px;line-height:1.95;color:var(--text)}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  font-size:clamp(1.45rem,2.6vw,1.95rem);
  margin:2.6em 0 .9em;padding-top:.9em;border-top:1px solid var(--line);
}
.article-body h2::before{
  content:"";display:block;width:44px;height:3px;border-radius:2px;
  background:var(--lime);margin-bottom:14px;
}
.article-body h3{
  font-family:var(--sans);font-size:1.22rem;font-weight:700;
  color:var(--brand);margin:2em 0 .7em;letter-spacing:0;
}
.article-body h4{font-family:var(--sans);font-size:1.02rem;color:var(--brand);margin:1.6em 0 .5em}
.article-body p{margin:0 0 1.4em}
.article-body a{border-bottom:1px solid rgba(60,224,160,.6);color:var(--brand)}
.article-body a:hover{color:var(--lime-deep)}
.article-body strong{color:var(--brand);font-weight:700}
.article-body ul,.article-body ol{padding-left:0;list-style:none;margin:0 0 1.5em}
.article-body ol{counter-reset:item}
.article-body ul li,.article-body ol li{position:relative;padding-left:26px;margin:.55em 0}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.82em;width:7px;height:7px;
  border-radius:2px;background:var(--lime);
}
.article-body ol li{counter-increment:item}
.article-body ol li::before{
  content:counter(item,decimal-leading-zero);
  position:absolute;left:0;top:0;font-family:var(--mono);font-size:13px;
  color:var(--amber);font-weight:700;line-height:2.6;
}
.article-body blockquote{
  margin:1.8em 0;padding:20px 24px;background:#EFF6F2;
  border-left:3px solid var(--lime);border-radius:0 var(--radius-img) var(--radius-img) 0;
  color:#243B35;font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{margin:1.8em auto;box-shadow:var(--shadow-1)}
.article-body figure{margin:1.8em 0}
.article-body figcaption{
  text-align:center;font-size:13px;color:var(--muted);margin-top:10px;
  font-family:var(--mono);
}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.8em 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--radius-img);overflow:hidden;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left}
.article-body th{background:var(--line-soft);color:var(--brand);font-weight:700}
.article-body pre{
  background:var(--ink);color:rgba(255,255,255,.86);padding:20px 22px;
  border-radius:var(--radius-img);overflow-x:auto;font-family:var(--mono);
  font-size:14px;line-height:1.7;margin:1.8em 0;
}
.article-body code{font-family:var(--mono);font-size:.92em;background:var(--line-soft);padding:2px 6px;border-radius:6px}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.6em 0}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}

.article-empty{
  text-align:center;padding:72px 24px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);
}
.article-empty i{font-size:34px;color:var(--amber);display:block;margin-bottom:16px}
.article-empty p{font-family:var(--serif);font-size:20px;color:var(--brand);margin-bottom:20px}

/* ---------- 标签 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:48px;padding-top:26px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;
  border-radius:var(--radius-btn);border:1px solid var(--line);
  background:var(--card);font-size:13.5px;color:var(--muted);
  transition:all var(--dur) var(--ease);
}
.tag:hover{border-color:var(--lime);color:var(--lime-deep);transform:translateY(-2px)}

/* ---------- 相关推荐 ---------- */
.section{padding:88px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:38px}
.section-head h2{font-size:clamp(1.5rem,2.8vw,2.1rem);margin:0}
.section-head .more{font-size:14px;color:var(--muted);display:inline-flex;align-items:center;gap:6px}
.section-head .more:hover{color:var(--lime-deep)}
.section-head .more i{transition:transform var(--dur) var(--ease)}
.section-head .more:hover i{transform:translateX(4px)}
.related-grid{margin-left:-14px!important;margin-right:-14px!important}
.related-grid > .cell{padding-left:14px;padding-right:14px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);height:100%;
  display:flex;flex-direction:column;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(60,224,160,.55)}
.card-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--ink)}
.card-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 320ms var(--ease)}
.card:hover .card-thumb img{transform:scale(1.04)}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:1.1rem;margin:0;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{margin:0;font-size:14.5px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line-soft);
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--muted);font-family:var(--mono);
}
.back-links{display:flex;flex-wrap:wrap;gap:26px;margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.back-link{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:var(--brand)}
.back-link i{transition:transform var(--dur) var(--ease)}
.back-link:hover i{transform:translateX(-4px)}
.back-link.is-next:hover i{transform:translateX(4px)}

/* ---------- 结尾 CTA ---------- */
.cta-band{background:var(--ink);color:rgba(255,255,255,.78);padding:56px 0;position:relative;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.16;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.16) 0 1px,transparent 1px 9px);
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;position:relative;z-index:2}
.cta-inner h3{color:#fff;font-size:clamp(1.3rem,2.4vw,1.8rem);margin:0 0 8px}
.cta-inner p{margin:0;font-size:14.5px;color:rgba(255,255,255,.68)}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn-outline-light{background:transparent;border:1px solid rgba(255,255,255,.32);color:#fff}
.btn-outline-light:hover{border-color:var(--lime);color:var(--lime)}

.toast{
  position:fixed;left:50%;bottom:36px;transform:translate(-50%,16px);
  background:var(--lime);color:var(--ink);font-size:14px;font-weight:600;
  padding:11px 22px;border-radius:var(--radius-btn);box-shadow:var(--shadow-2);
  opacity:0;pointer-events:none;transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);z-index:200;
}
.toast.is-show{opacity:1;transform:translate(-50%,0)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.78);padding:72px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-logo{font-family:var(--serif);font-size:20px;font-weight:800;color:#fff;display:block;margin-bottom:14px}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.66);margin:0;max-width:340px}
.footer-col h4{font-family:var(--sans);font-size:14px;color:#fff;margin:0 0 16px;letter-spacing:.06em}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin:0 0 10px}
.footer-col a{color:rgba(255,255,255,.72);font-size:14.5px;position:relative;display:inline-block}
.footer-col a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;background:var(--lime);transition:width var(--dur) var(--ease)}
.footer-col a:hover{color:var(--lime)}
.footer-col a:hover::after{width:100%}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line-dark);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);font-family:var(--mono);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 260ms var(--ease),transform 260ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

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

/* ---------- 断点 ---------- */
@media (max-width:1024px){
  .nav-menu{gap:18px;margin-left:6px}
  .nav-search input[type=search]{width:150px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .section{padding:72px 0}
}
@media (max-width:768px){
  body{font-size:16px;line-height:1.85}
  .container{padding:0 18px}
  .site-nav{height:60px}
  .nav-inner{padding:0 18px;gap:14px}
  .logo-main{font-size:16.5px}
  .logo-sub{font-size:10px;letter-spacing:.1em}
  .nav-menu{
    position:fixed;top:60px;left:0;right:0;bottom:0;
    flex-direction:column;align-items:flex-start;gap:6px;
    background:rgba(246,244,239,.97);backdrop-filter:blur(18px);
    padding:26px 22px;margin:0;
    transform:translateY(-12px);opacity:0;visibility:hidden;
    transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur);
    overflow-y:auto;
  }
  .site-nav.nav-open .nav-menu{opacity:1;transform:none;visibility:visible}
  .nav-link{width:100%;padding:14px 4px;font-size:18px;border-bottom:1px solid var(--line)}
  .nav-link::after{display:none}
  .nav-search{display:none}
  .btn-nav{display:none}
  .nav-toggle{display:flex}
  .page-main{padding-top:60px}
  .article-head{padding:16px 0 36px}
  .article-meta{font-size:12.5px;gap:8px 16px}
  .read-wrap{padding:36px 0 16px}
  .article-body{font-size:16.5px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:26px}
  .related-grid > .cell{margin-bottom:20px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .back-links{gap:18px}
}
@media (max-width:480px){
  .container{padding:0 16px}
  .article-head h1{font-size:1.72rem}
  .btn{height:44px;padding:0 18px;font-size:14px;width:100%}
  .cta-actions{width:100%}
  .tag{height:32px;padding:0 13px;font-size:13px}
}

/* roulang page: category1 */
:root{
  --ink:#0C1614;
  --brand:#123A34;
  --brand-soft:#1B4E45;
  --lime:#3CE0A0;
  --lime-soft:rgba(60,224,160,.14);
  --amber:#F2A03D;
  --amber-soft:rgba(242,160,61,.16);
  --bg:#F6F4EF;
  --bg-alt:#F1EFE9;
  --card:#FFFFFF;
  --text:#1E2523;
  --muted:#5C6764;
  --border:#E3E0D8;
  --border-dark:rgba(255,255,255,.14);
  --on-dark:rgba(255,255,255,.78);
  --r-card:18px;
  --r-img:14px;
  --r-btn:999px;
  --shadow-1:0 1px 2px rgba(12,22,20,.04);
  --shadow-2:0 14px 34px -14px rgba(12,22,20,.18);
  --ease:cubic-bezier(.2,.8,.2,1);
  --t:240ms;
  --w:1200px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",STSong,serif;
  --font-sans:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.9;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color var(--t) var(--ease)}
a:hover{color:var(--brand-soft)}
button{font-family:inherit}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--brand);line-height:1.25;letter-spacing:-.02em;margin:0}
h1{font-size:clamp(2.2rem,5.6vw,4rem);font-weight:800}
h2{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:800}
h3{font-size:1.25rem;font-weight:700}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:var(--w);margin:0 auto;padding:0 24px}
.section{padding:104px 0}
.section--tight{padding:72px 0}
.section--dark{background:var(--ink);color:var(--on-dark)}
.section--alt{background:var(--bg-alt)}

/* ---------- 导航 ---------- */
.site-nav{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid rgba(227,224,216,.75);
  transition:background var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.site-nav.is-scrolled{
  background:rgba(246,244,239,.94);
  border-bottom-color:var(--border);
  box-shadow:0 6px 24px -18px rgba(12,22,20,.5);
}
.nav-inner{display:flex;align-items:center;gap:22px;height:72px}
.logo{display:flex;flex-direction:column;justify-content:center;gap:1px;flex-shrink:0}
.logo-main{font-family:var(--font-serif);font-weight:800;font-size:1.05rem;letter-spacing:-.02em;color:var(--brand);line-height:1.2}
.logo-sub{font-size:11px;color:var(--muted);letter-spacing:.08em;line-height:1.3}
.nav-menu{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-link{
  position:relative;font-size:15px;color:var(--brand);font-weight:600;
  padding:6px 2px;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--lime);transition:width var(--t) var(--ease);
}
.nav-link:hover::after,.nav-link:focus-visible::after{width:100%}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{width:100%;background:var(--brand)}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-search input{
  width:180px;padding:9px 16px;font-size:14px;color:var(--text);
  background:rgba(255,255,255,.72);border:1px solid var(--border);border-radius:var(--r-btn);
  transition:border-color var(--t) var(--ease),background var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.nav-search input::placeholder{color:#9AA3A0}
.nav-search input:focus{outline:none;border-color:var(--lime);background:#fff;box-shadow:0 0 0 3px var(--lime-soft)}
.nav-toggle{
  display:none;width:44px;height:44px;padding:0;border:1px solid var(--border);border-radius:12px;
  background:rgba(255,255,255,.7);cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px;transition:transform var(--t) var(--ease),opacity var(--t) var(--ease)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;font-size:15px;font-weight:700;line-height:1;
  border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.btn-primary{background:var(--lime);color:var(--ink);box-shadow:0 8px 22px -12px rgba(60,224,160,.9)}
.btn-primary:hover{background:#4FEEAF;transform:translateY(-2px);box-shadow:0 16px 30px -14px rgba(60,224,160,.95);color:var(--ink)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.42);color:#fff}
.btn-ghost:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px)}
.btn-outline{background:transparent;border-color:var(--border);color:var(--brand)}
.btn-outline:hover{border-color:var(--lime);color:var(--brand);transform:translateY(-2px)}
.btn-dark{background:var(--brand);color:#fff}
.btn-dark:hover{background:var(--brand-soft);color:#fff;transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}

/* ---------- 通用标签 / 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;font-size:12.5px;font-weight:700;letter-spacing:.02em;
  border-radius:var(--r-btn);background:var(--lime-soft);color:var(--brand);
}
.badge--amber{background:var(--amber-soft);color:#8A5410}
.badge--dark{background:rgba(255,255,255,.12);color:#fff}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--amber);margin-bottom:18px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--amber);display:block}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px;flex-wrap:wrap}
.section-head p{max-width:560px;color:var(--muted);font-size:15.5px;margin:12px 0 0}
.link-more{font-size:15px;font-weight:700;color:var(--brand);display:inline-flex;align-items:center;gap:8px;white-space:nowrap}
.link-more span{transition:transform var(--t) var(--ease)}
.link-more:hover span{transform:translateX(4px)}
.rule{height:1px;background:var(--border);border:0;margin:0}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  display:flex;align-items:center;
  min-height:52vh;
  padding:150px 0 78px;
  color:#fff;
  background-image:
    linear-gradient(105deg,rgba(12,22,20,.88) 0%,rgba(12,22,20,.72) 46%,rgba(18,58,52,.42) 100%),
    url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.055) 0 1px,transparent 1px 92px);
  opacity:.9;
}
.hero .container{position:relative;z-index:2}
.hero-inner{max-width:860px}
.hero h1{color:#fff;margin-bottom:22px}
.hero h1 em{font-style:normal;color:var(--lime);display:block;font-size:clamp(1.3rem,2.6vw,2rem);font-weight:700;margin-top:14px;letter-spacing:0}
.hero-sub{font-size:clamp(1rem,1.6vw,1.15rem);color:rgba(255,255,255,.82);max-width:620px;margin-bottom:32px;line-height:1.85}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:52px}
.hero-meta{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  border-top:1px solid rgba(255,255,255,.18);
}
.hero-meta div{padding:20px 22px 0 0;border-right:1px solid rgba(255,255,255,.14)}
.hero-meta div:last-child{border-right:0}
.hero-meta dt{font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--lime);margin-bottom:6px}
.hero-meta dd{margin:0;font-size:14.5px;color:rgba(255,255,255,.8);line-height:1.6}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);padding-top:96px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb span.sep{color:#B9BEB9}

/* ---------- 卡片 ---------- */
.grid-margin-x{margin-left:-14px;margin-right:-14px}
.grid-margin-x>.cell{padding-left:14px;padding-right:14px}
.card{
  position:relative;display:flex;flex-direction:column;height:100%;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);overflow:hidden;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(60,224,160,.55)}
.card-media{position:relative;overflow:hidden;background:var(--ink)}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 420ms var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-media--tall img{aspect-ratio:4/3}
.card-body{padding:26px 26px 28px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{margin:0}
.card-body p{color:var(--muted);font-size:15.5px;line-height:1.85;margin:0}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:8px}
.card--plain .card-body{padding:30px 28px}
.card-num{
  font-family:var(--font-mono);font-size:13px;color:var(--amber);letter-spacing:.1em;
}

/* ---------- 图文说明条 ---------- */
.strip{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);
}
.strip-media{background:var(--ink);min-height:280px}
.strip-media img{width:100%;height:100%;object-fit:cover;min-height:280px}
.strip-body{padding:40px 44px;display:flex;flex-direction:column;justify-content:center;gap:14px}
.strip-body h3{font-size:clamp(1.3rem,2vw,1.7rem)}
.strip-body p{color:var(--muted);font-size:15.5px;margin:0}
.strip-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}

/* ---------- 步骤流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--border)}
.step{padding:34px 30px 8px 0;border-right:1px solid var(--border)}
.step:last-child{border-right:0;padding-right:0}
.step-num{font-family:var(--font-mono);font-size:34px;font-weight:700;color:var(--lime);line-height:1;margin-bottom:16px;letter-spacing:-.02em}
.step h3{margin-bottom:10px}
.step p{color:var(--muted);font-size:15.5px}

/* ---------- 场景清单 ---------- */
.scene-list{border-top:1px solid var(--border)}
.scene{
  display:grid;grid-template-columns:64px minmax(0,1fr) 220px 28px;
  align-items:center;gap:20px;
  padding:24px 18px;border-bottom:1px solid var(--border);
  transition:background var(--t) var(--ease);
}
.scene:hover{background:var(--bg-alt)}
.scene-idx{font-family:var(--font-mono);font-size:14px;color:var(--amber);letter-spacing:.08em}
.scene h3{font-size:1.05rem;margin:0}
.scene p{margin:6px 0 0;color:var(--muted);font-size:14.5px;line-height:1.7}
.scene-tag{font-size:13px;color:var(--muted);text-align:right}
.scene-arrow{color:var(--brand);font-size:18px;transition:transform var(--t) var(--ease)}
.scene:hover .scene-arrow{transform:translateX(5px)}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--border)}
.faq-item{border-bottom:1px solid var(--border)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 4px;background:none;border:0;cursor:pointer;text-align:left;
  font-family:var(--font-serif);font-size:1.08rem;font-weight:700;color:var(--brand);
  transition:color var(--t) var(--ease);
}
.faq-q:hover{color:var(--brand-soft)}
.faq-icon{
  flex-shrink:0;width:30px;height:30px;border:1px solid var(--border);border-radius:10px;
  display:flex;align-items:center;justify-content:center;color:var(--brand);
  transition:transform var(--t) var(--ease),background var(--t) var(--ease),border-color var(--t) var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(90deg);background:var(--lime);border-color:var(--lime);color:var(--ink)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms var(--ease)}
.faq-a p{
  background:var(--bg-alt);border-radius:14px;padding:18px 20px;margin:0 0 22px;
  color:var(--muted);font-size:15.5px;line-height:1.85;
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);color:var(--on-dark);border-radius:22px;
  padding:46px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;margin-bottom:10px}
.cta-band p{margin:0;font-size:15.5px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.toast{
  position:fixed;left:50%;bottom:34px;transform:translate(-50%,14px);
  background:var(--lime);color:var(--ink);font-weight:700;font-size:14.5px;
  padding:12px 24px;border-radius:var(--r-btn);box-shadow:var(--shadow-2);
  opacity:0;pointer-events:none;transition:opacity var(--t) var(--ease),transform var(--t) var(--ease);z-index:80;
}
.toast.is-on{opacity:1;transform:translate(-50%,0)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--on-dark);padding:76px 0 34px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.6fr) repeat(3,minmax(0,1fr));gap:44px}
.footer-logo{font-family:var(--font-serif);font-size:1.15rem;font-weight:800;color:#fff;display:block;margin-bottom:16px}
.footer-brand p{font-size:14.5px;line-height:1.85;color:var(--on-dark);max-width:360px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-family:var(--font-sans);letter-spacing:.02em}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14.5px;color:var(--on-dark);position:relative;display:inline-block}
.footer-col a::after{content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;background:var(--lime);transition:width var(--t) var(--ease)}
.footer-col a:hover{color:#fff}
.footer-col a:hover::after{width:100%}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--border-dark);
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.58);
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1024px){
  .section{padding:84px 0}
  .nav-search input{width:150px}
  .nav-menu{gap:20px}
  .strip{grid-template-columns:1fr}
  .strip-media{min-height:230px}
  .strip-media img{min-height:230px}
  .strip-body{padding:34px 32px}
  .scene{grid-template-columns:56px minmax(0,1fr) 28px}
  .scene-tag{display:none}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px}
}
@media screen and (max-width:768px){
  body{font-size:16px}
  .container{padding:0 18px}
  .section{padding:60px 0}
  .nav-inner{height:60px}
  .nav-toggle{display:flex}
  .nav-search{display:none}
  .btn-nav{display:none}
  .nav-menu{
    position:fixed;left:0;right:0;top:60px;bottom:0;
    display:none;flex-direction:column;align-items:flex-start;gap:0;
    margin:0;padding:24px 18px 40px;
    background:rgba(12,22,20,.96);
    -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
    overflow-y:auto;
  }
  .site-nav.nav-open .nav-menu{display:flex}
  .nav-link{display:block;width:100%;padding:18px 4px;font-size:1.2rem;color:#fff;border-bottom:1px solid rgba(255,255,255,.12)}
  .nav-link.is-active::after{background:var(--lime)}
  .site-nav.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .site-nav.nav-open .nav-toggle span:nth-child(2){opacity:0}
  .site-nav.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .hero{padding:120px 0 58px;min-height:60vh}
  .hero-meta{grid-template-columns:repeat(2,minmax(0,1fr));gap:0}
  .hero-meta div{padding:16px 16px 0 0;border-bottom:1px solid rgba(255,255,255,.14);border-right:0}
  .hero-meta div:nth-child(odd){border-right:1px solid rgba(255,255,255,.14)}
  .hero-meta div:nth-child(3),.hero-meta div:nth-child(4){padding-top:16px}
  .hero-actions{margin-bottom:36px}
  .steps{grid-template-columns:1fr}
  .step{border-right:0;border-bottom:1px solid var(--border);padding:28px 0 12px}
  .step:last-child{border-bottom:0}
  .scene{grid-template-columns:44px minmax(0,1fr) 24px;gap:14px;padding:20px 8px}
  .cta-band{padding:34px 26px;border-radius:18px}
  .crumb{padding-top:84px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;gap:8px}
  .section-head{margin-bottom:32px}
}
@media screen and (max-width:480px){
  h1{font-size:clamp(1.9rem,8vw,2.4rem)}
  .hero{padding:110px 0 48px}
  .hero-actions .btn{width:100%}
  .card-body{padding:22px 20px 24px}
  .card--plain .card-body{padding:24px 20px}
  .strip-body{padding:26px 20px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .faq-q{font-size:1rem;padding:20px 2px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --ink:#0C1614;
  --brand:#123A34;
  --lime:#3CE0A0;
  --amber:#F2A03D;
  --bg:#F6F4EF;
  --card:#FFFFFF;
  --text:#1E2523;
  --muted:#5C6764;
  --line:#E3E0D8;
  --line-dark:rgba(255,255,255,.14);
  --radius-card:18px;
  --radius-img:14px;
  --radius-btn:999px;
  --shadow-1:0 1px 2px rgba(12,22,20,.04);
  --shadow-2:0 14px 34px -14px rgba(12,22,20,.18);
  --ease:cubic-bezier(.2,.8,.2,1);
  --dur:240ms;
  --container:1200px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);}
a:hover{color:#0d6e5c;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:800;letter-spacing:-.02em;line-height:1.25;color:var(--brand);}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px;}

/* ---------- 容器 ---------- */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;
  letter-spacing:.01em;
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--lime);color:var(--ink);box-shadow:var(--shadow-1);}
.btn-primary:hover{background:#55e8b1;color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--lime);color:#0d6e5c;transform:translateY(-2px);}
.btn-dark-ghost{background:transparent;color:#fff;border-color:var(--line-dark);}
.btn-dark-ghost:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--radius-btn);
  font-size:12.5px;font-weight:600;line-height:1.4;letter-spacing:.02em;
}
.badge-lime{background:rgba(60,224,160,.16);color:#0d6e5c;}
.badge-amber{background:rgba(242,160,61,.16);color:#9a5f10;}
.badge-soft{background:#F1EFE9;color:var(--muted);}

/* ---------- 导航 ---------- */
.site-nav{
  position:fixed;top:0;left:0;right:0;z-index:900;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 2px rgba(12,22,20,.03);
  transition:background-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.site-nav.is-scrolled{
  background:rgba(246,244,239,.94);
  border-bottom-color:#D6D2C7;
  box-shadow:0 10px 30px -18px rgba(12,22,20,.28);
}
.nav-inner{
  display:flex;align-items:center;gap:24px;
  height:72px;
}
.logo{display:flex;flex-direction:column;justify-content:center;line-height:1.2;flex:0 0 auto;}
.logo-main{font-family:var(--font-serif);font-weight:800;font-size:17px;color:var(--brand);letter-spacing:-.01em;}
.logo-sub{font-size:11.5px;color:var(--muted);letter-spacing:.14em;}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:12px;}
.nav-link{
  position:relative;
  padding:10px 14px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--text);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;
  background:var(--lime);transform:scaleX(0);transform-origin:left center;
  transition:transform var(--dur) var(--ease);
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-search{display:block;}
.nav-search input{
  width:180px;padding:9px 16px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:rgba(255,255,255,.75);
  color:var(--text);font-size:14px;line-height:1.4;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.nav-search input::placeholder{color:#9AA3A0;}
.nav-search input:focus{outline:none;border-color:var(--lime);background:#fff;box-shadow:0 0 0 3px rgba(60,224,160,.18);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:rgba(255,255,255,.7);padding:0;position:relative;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand);margin:3px auto;border-radius:2px;transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

/* ---------- 页面标题窄条 ---------- */
.page-head{
  padding:132px 0 56px;
  background:
    linear-gradient(180deg,rgba(12,22,20,.90) 0%,rgba(12,22,20,.80) 60%,rgba(12,22,20,.72) 100%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  color:#fff;
  position:relative;
  overflow:hidden;
}
.page-head::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.045) 0 1px,transparent 1px 12px);
  pointer-events:none;
}
.page-head .container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13.5px;color:rgba(255,255,255,.62);margin-bottom:20px;}
.breadcrumb a{color:rgba(255,255,255,.76);}
.breadcrumb a:hover{color:var(--lime);}
.breadcrumb span.sep{color:rgba(255,255,255,.35);}
.page-head h1{
  color:#fff;
  font-size:clamp(1.9rem,3.6vw,2.9rem);
  max-width:820px;
  margin:16px 0 18px;
}
.page-head .lead{
  max-width:720px;color:rgba(255,255,255,.78);font-size:17px;line-height:1.9;
}
.head-meta{
  display:flex;flex-wrap:wrap;gap:0;margin-top:30px;
  border-top:1px solid var(--line-dark);
}
.head-meta li{
  padding:18px 28px 4px 0;margin-right:28px;
  border-right:1px solid var(--line-dark);
  font-size:13.5px;color:rgba(255,255,255,.6);
}
.head-meta li:last-child{border-right:0;margin-right:0;}
.head-meta strong{display:block;font-family:var(--font-mono);font-size:20px;font-weight:600;color:#fff;letter-spacing:.02em;}

/* ---------- 板块 ---------- */
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.section-dark{background:var(--ink);color:rgba(255,255,255,.78);}
.section-dark h2,.section-dark h3{color:#fff;}
.section-alt{background:#EFEDE6;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head .kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.16em;
  color:#0d6e5c;text-transform:uppercase;margin-bottom:14px;
}
.section-head .kicker::before{content:"";width:26px;height:2px;background:var(--lime);display:block;}
.section-head h2{font-size:clamp(1.6rem,3vw,2.4rem);margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:16.5px;}
.section-dark .section-head p{color:rgba(255,255,255,.7);}

/* ---------- 卡片 ---------- */
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
  height:100%;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(60,224,160,.55);}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--ink);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease);}
.card:hover .card-media img{transform:scale(1.03);}
.card-media.ratio-4x3{aspect-ratio:4/3;}
.card-body{padding:24px 26px 26px;display:flex;flex-direction:column;flex:1;gap:12px;}
.card-body h3{font-size:1.25rem;}
.card-body p{color:var(--muted);font-size:15px;line-height:1.85;}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--muted);}
.card-foot .time{font-family:var(--font-mono);}

/* ---------- 横向图文说明条 ---------- */
.strip{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:0;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
}
.strip-media{position:relative;min-height:300px;background:var(--ink);}
.strip-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.strip-body{padding:44px 46px;}
.strip-body h3{font-size:1.45rem;margin-bottom:12px;}
.strip-body p{color:var(--muted);font-size:15.5px;}
.strip-list{margin-top:18px;display:flex;flex-wrap:wrap;gap:10px;}

/* ---------- 锚点索引 + 编号长列表 ---------- */
.rail-wrap{display:grid;grid-template-columns:250px minmax(0,1fr);gap:56px;align-items:start;}
.index-rail{position:relative;}
.rail-inner{position:sticky;top:104px;}
.rail-title{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.16em;color:var(--muted);margin-bottom:16px;}
.rail-link{
  display:flex;align-items:baseline;gap:12px;
  padding:12px 0 12px 16px;
  border-left:2px solid var(--line);
  color:var(--muted);font-size:15px;font-weight:600;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),padding-left var(--dur) var(--ease);
}
.rail-link .num{font-family:var(--font-mono);font-size:12.5px;color:#9AA3A0;}
.rail-link:hover{color:var(--brand);border-left-color:#C9C4B8;padding-left:18px;}
.rail-link.is-current{color:var(--brand);border-left-color:var(--lime);padding-left:18px;}
.rail-link.is-current .num{color:#0d6e5c;}
.rail-note{
  margin-top:26px;padding:18px 20px;border-radius:var(--radius-img);
  background:#EFEDE6;border:1px solid var(--line);
  font-size:13.5px;color:var(--muted);line-height:1.8;
}
.entry-group{margin-bottom:56px;}
.entry-group:last-child{margin-bottom:0;}
.entry-group > h3{
  font-size:1.25rem;padding-bottom:14px;border-bottom:2px solid var(--brand);
  display:flex;align-items:center;gap:12px;margin-bottom:6px;
}
.entry-group > h3 .g-num{font-family:var(--font-mono);font-size:13px;color:var(--amber);letter-spacing:.08em;}
.entry-group > p.group-desc{color:var(--muted);font-size:15px;padding:14px 0 6px;}
.entry-row{
  display:grid;grid-template-columns:60px minmax(0,1fr) 24px;
  gap:20px;align-items:center;
  padding:22px 16px;border-bottom:1px solid var(--line);
  transition:background-color var(--dur) var(--ease),padding-left var(--dur) var(--ease);
}
.entry-row:hover{background:#F1EFE9;padding-left:22px;}
.entry-row .idx{font-family:var(--font-mono);font-size:19px;font-weight:600;color:#C9C4B8;transition:color var(--dur) var(--ease);}
.entry-row:hover .idx{color:var(--amber);}
.entry-row h4{font-size:17px;font-family:var(--font-sans);font-weight:700;color:var(--brand);letter-spacing:0;margin-bottom:4px;}
.entry-row p{color:var(--muted);font-size:14.5px;line-height:1.8;margin:0;}
.entry-row .arrow{color:#B9B4A7;font-size:18px;transition:transform var(--dur) var(--ease),color var(--dur) var(--ease);}
.entry-row:hover .arrow{transform:translateX(5px);color:var(--brand);}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;counter-reset:step;}
.step{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px 28px;box-shadow:var(--shadow-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.step:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(60,224,160,.55);}
.step .step-num{
  font-family:var(--font-mono);font-size:13px;letter-spacing:.16em;color:var(--amber);
  display:block;margin-bottom:16px;
}
.step h3{font-size:1.15rem;margin-bottom:10px;}
.step p{color:var(--muted);font-size:15px;}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:transparent;border:0;text-align:left;
  display:flex;align-items:center;gap:16px;
  padding:24px 4px;font-size:17px;font-weight:700;color:var(--brand);
  font-family:var(--font-sans);
  transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:#0d6e5c;}
.faq-q .plus{
  margin-left:auto;flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);position:relative;transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);transform:translate(-50%,-50%);
  transition:background-color var(--dur) var(--ease);
}
.faq-q .plus::before{width:11px;height:1.5px;}
.faq-q .plus::after{width:1.5px;height:11px;}
.faq-item.is-open .plus{transform:rotate(90deg);border-color:var(--lime);background:rgba(60,224,160,.14);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 300ms var(--ease);}
.faq-a-inner{
  padding:0 4px 26px;color:var(--muted);font-size:15.5px;
  background:transparent;
}
.faq-item.is-open .faq-a{border-radius:14px;}

/* ---------- CTA 条带 ---------- */
.cta-band{
  background:var(--ink);color:rgba(255,255,255,.78);
  border-radius:var(--radius-card);padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.04) 0 1px,transparent 1px 14px);
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{color:#fff;font-size:clamp(1.4rem,2.4vw,1.9rem);margin-bottom:10px;}
.cta-band p{max-width:560px;margin:0;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.toast-slot{
  position:fixed;left:50%;bottom:36px;transform:translate(-50%,16px);
  background:var(--lime);color:var(--ink);font-weight:600;font-size:14px;
  padding:11px 24px;border-radius:var(--radius-btn);
  box-shadow:var(--shadow-2);opacity:0;pointer-events:none;
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);
  z-index:1200;
}
.toast-slot.is-show{opacity:1;transform:translate(-50%,0);}

/* ---------- 相关分类互链 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.rel-card{
  display:flex;align-items:center;gap:20px;
  padding:24px 26px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(60,224,160,.55);}
.rel-card .rel-ico{
  flex:0 0 52px;height:52px;border-radius:14px;background:rgba(18,58,52,.08);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-weight:600;color:var(--brand);font-size:15px;
}
.rel-card h3{font-size:1.05rem;font-family:var(--font-sans);font-weight:700;letter-spacing:0;margin-bottom:4px;}
.rel-card p{color:var(--muted);font-size:14px;margin:0;}
.rel-card .arrow{margin-left:auto;color:#B9B4A7;transition:transform var(--dur) var(--ease),color var(--dur) var(--ease);}
.rel-card:hover .arrow{transform:translateX(5px);color:var(--brand);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.78);padding:76px 0 34px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:44px;}
.footer-logo{font-family:var(--font-serif);font-size:19px;font-weight:800;color:#fff;display:block;margin-bottom:16px;}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.68);max-width:340px;}
.footer-col h4{color:#fff;font-family:var(--font-sans);font-size:14px;font-weight:700;letter-spacing:.06em;margin-bottom:18px;}
.footer-col ul li{margin-bottom:12px;}
.footer-col a{
  color:rgba(255,255,255,.72);font-size:14.5px;position:relative;display:inline-block;
}
.footer-col a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:1.5px;background:var(--lime);
  transform:scaleX(0);transform-origin:left center;transition:transform var(--dur) var(--ease);
}
.footer-col a:hover{color:#fff;}
.footer-col a:hover::after{transform:scaleX(1);}
.footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.55);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 22px;}
  .rail-wrap{grid-template-columns:210px minmax(0,1fr);gap:36px;}
  .nav-search input{width:150px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:36px;}
  .strip-body{padding:36px 32px;}
  .cta-band{padding:44px 34px;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .page-head{padding:108px 0 44px;}
  .head-meta li{padding-right:18px;margin-right:18px;}
  .section{padding:60px 0;}
  .section-tight{padding:48px 0;}
  .nav-inner{height:60px;gap:12px;}
  .logo-main{font-size:15px;}
  .logo-sub{font-size:10.5px;letter-spacing:.1em;}
  .nav-toggle{display:block;}
  .nav-search{display:none;}
  .btn-nav{display:none;}
  .nav-menu{
    position:fixed;inset:0;z-index:1000;
    flex-direction:column;align-items:stretch;justify-content:center;
    gap:6px;padding:80px 28px;
    background:rgba(12,22,20,.94);
    -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
    transform:translateY(-100%);opacity:0;pointer-events:none;
    transition:transform 300ms var(--ease),opacity 300ms var(--ease);
    margin-left:0;
  }
  .nav-menu.is-open{transform:translateY(0);opacity:1;pointer-events:auto;}
  .nav-link{color:#fff;font-size:20px;padding:16px 6px;min-height:44px;border-bottom:1px solid var(--line-dark);border-radius:0;}
  .nav-link::after{display:none;}
  .nav-link.is-active{color:var(--lime);}
  .rail-wrap{grid-template-columns:1fr;gap:28px;}
  .rail-inner{position:static;}
  .index-rail{border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;padding:20px 20px 8px;}
  .rail-link{border-left-width:2px;}
  .step{padding:26px 22px;}
  .steps{grid-template-columns:1fr;}
  .strip{grid-template-columns:1fr;}
  .strip-media{min-height:200px;}
  .entry-row{grid-template-columns:44px minmax(0,1fr) 18px;gap:14px;padding:18px 10px;}
  .entry-row .idx{font-size:16px;}
  .entry-row:hover{padding-left:14px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 24px;}
  .rel-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .page-head h1{font-size:1.65rem;}
  .head-meta{flex-direction:column;gap:0;}
  .head-meta li{border-right:0;border-bottom:1px solid var(--line-dark);padding:14px 0;margin:0;width:100%;}
  .head-meta li:last-child{border-bottom:0;}
  .card-body{padding:20px 20px 22px;}
  .strip-body{padding:28px 20px;}
  .entry-group > h3{font-size:1.1rem;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
  .card:hover,.btn:hover,.step:hover,.rel-card:hover{transform:none;}
}