/* roulang page: index */
:root{
  --ink-900:#16112F;
  --ink-700:#241C4A;
  --ink-500:#3A2E6E;
  --gold-500:#C9A46A;
  --gold-300:#E4CFA3;
  --nebula:#7A5BC2;
  --bg:#F7F6F3;
  --surface:#FFFFFF;
  --line:#E7E4DE;
  --text:#1E1B2A;
  --text-2:#565064;
  --text-3:#8B8698;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(36,28,74,.06),0 12px 32px -18px rgba(36,28,74,.18);
  --shadow-2:0 2px 6px rgba(36,28,74,.08),0 22px 48px -22px rgba(36,28,74,.28);
  --serif:"Noto Serif SC","Songti SC","Source Han Serif SC","SimSun",Georgia,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --header-h:68px;
  --container:1200px;
}
*,*::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:16.5px;line-height:1.75;-webkit-font-smoothing:antialiased;font-variant-numeric:tabular-nums}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:600;letter-spacing:-.01em;line-height:1.22}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
time{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--nebula);outline-offset:2px;border-radius:6px}
::selection{background:rgba(201,164,106,.35)}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink-700);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;z-index:99}
.skip-link:focus{left:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}

/* ===== header ===== */
.site-header{position:sticky;top:0;z-index:50;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(36,28,74,.06)}
.header-inner{display:flex;align-items:center;gap:22px;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:26px;height:26px;flex-shrink:0}
.brand-name{font-family:var(--serif);font-size:17px;font-weight:600;color:var(--ink-700);white-space:nowrap;letter-spacing:.01em}
.nav-main{display:flex;align-items:center;gap:28px;margin-left:6px}
.nav-link{position:relative;font-size:15px;color:var(--text-2);padding:6px 0;transition:color .2s ease}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;background:var(--gold-500);transform:scaleX(0);transform-origin:left;transition:transform .25s ease}
.nav-link:hover{color:var(--ink-700)}
.nav-link.is-active{color:var(--ink-700);font-weight:500}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.search-box{display:flex;align-items:center;gap:8px;height:40px;padding:0 16px;background:var(--bg);border:1px solid var(--line);border-radius:999px;transition:border-color .2s,box-shadow .2s,background .2s}
.search-box:focus-within{border-color:var(--gold-500);box-shadow:0 0 0 3px rgba(201,164,106,.18);background:#fff}
.search-box svg{width:16px;height:16px;color:var(--text-3);flex-shrink:0}
.search-box input{border:0;background:transparent;outline:none;width:158px;font-size:14px}
.search-box input::placeholder{color:var(--text-3)}
.menu-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;align-items:center;justify-content:center;background:var(--surface);transition:border-color .2s,background .2s}
.menu-toggle:hover{border-color:var(--gold-300);background:var(--bg)}
.menu-toggle svg{width:20px;height:20px;color:var(--ink-700)}
.drawer-mask{position:fixed;inset:0;background:rgba(22,17,47,.42);opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;z-index:60}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);background:var(--surface);z-index:61;transform:translateX(102%);transition:transform .32s cubic-bezier(.22,.61,.36,1);display:flex;flex-direction:column;padding:22px 22px 26px;box-shadow:-16px 0 42px -24px rgba(22,17,47,.45)}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-title{font-family:var(--serif);font-size:16px;color:var(--ink-700)}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center}
.drawer-close:hover{background:var(--bg)}
.drawer-nav{display:flex;flex-direction:column;margin-top:8px}
.drawer-nav a{display:flex;align-items:center;justify-content:space-between;height:52px;font-size:15.5px;color:var(--text-2);border-bottom:1px solid var(--line)}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--ink-700)}
.drawer-nav a span.arrow{color:var(--gold-500);font-size:14px}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:14px}
.drawer-foot .search-box{width:100%}
.drawer-foot .search-box input{width:100%}

/* ===== buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;padding:11px 24px;font-size:15px;font-weight:500;border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:transform .2s ease,box-shadow .25s ease,background .2s ease,color .2s ease,border-color .2s ease}
.btn-primary{background:var(--ink-700);color:#fff}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px -12px rgba(36,28,74,.6);border-color:var(--gold-500)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-700)}
.btn-ghost:hover{background:var(--bg);border-color:var(--gold-300)}
.btn-gold{background:var(--gold-500);color:var(--ink-900)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 12px 26px -12px rgba(201,164,106,.8)}
.btn-ghost-light{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.42);color:#fff}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);border-color:var(--gold-300)}
.btn-lg{padding:14px 30px;font-size:16px}
.btn-sm{padding:8px 18px;font-size:14px}
.btn:disabled,.btn[disabled]{opacity:.45;pointer-events:none;box-shadow:none;transform:none}
.text-link{color:var(--ink-700);border-bottom:1px solid var(--gold-300);padding-bottom:2px;font-size:14.5px;transition:color .2s ease,border-color .2s ease}
.text-link:hover{color:var(--gold-500);border-color:var(--gold-500)}

/* ===== hero ===== */
.hero{position:relative;background-image:linear-gradient(180deg,rgba(22,17,47,.88),rgba(36,28,74,.74)),url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;background-repeat:no-repeat;color:#fff;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(1.6px 1.6px at 18% 26%,rgba(228,207,163,.75),transparent 60%),radial-gradient(1.4px 1.4px at 62% 18%,rgba(255,255,255,.55),transparent 60%),radial-gradient(1.6px 1.6px at 84% 62%,rgba(228,207,163,.6),transparent 60%),radial-gradient(1.2px 1.2px at 34% 74%,rgba(255,255,255,.45),transparent 60%);animation:starBreath 8s ease-in-out infinite;pointer-events:none}
@keyframes starBreath{0%,100%{opacity:.55}50%{opacity:1}}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;min-height:620px;padding:88px 32px 96px}
.hero-tag{display:inline-block;font-size:13px;letter-spacing:.06em;color:var(--gold-300);border:1px solid rgba(228,207,163,.42);border-radius:999px;padding:6px 16px;margin-bottom:22px}
.hero-title{font-size:clamp(30px,4.6vw,52px);line-height:1.15;letter-spacing:-.01em;color:#fff;max-width:12em}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.82);max-width:32em}
.hero-actions{margin-top:34px;display:flex;flex-wrap:wrap;gap:14px}
.hero-points{margin-top:36px;display:flex;flex-wrap:wrap;align-items:center;gap:0}
.hero-points li{position:relative;font-size:14px;color:rgba(255,255,255,.76);padding:0 18px}
.hero-points li:first-child{padding-left:0}
.hero-points li+li::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:1px;height:14px;background:rgba(228,207,163,.5)}
.hero-visual{position:relative}
.hero-visual img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:14px;border:1px solid var(--gold-300);box-shadow:0 30px 60px -30px rgba(0,0,0,.65)}
.hero-float{position:absolute;left:-26px;bottom:-24px;background:rgba(255,255,255,.96);color:var(--ink-700);border-radius:14px;padding:14px 20px;font-size:13.5px;box-shadow:var(--shadow-2);display:flex;align-items:center;gap:10px;border:1px solid var(--line)}
.hero-float .dot{width:8px;height:8px;border-radius:50%;background:var(--gold-500);box-shadow:0 0 0 4px rgba(201,164,106,.2)}
.scroll-hint{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);width:26px;height:42px;border:1px solid rgba(228,207,163,.6);border-radius:999px;display:flex;justify-content:center;z-index:3}
.scroll-hint span{width:1px;height:12px;background:var(--gold-300);margin-top:8px;animation:scrollFloat 2.2s ease-in-out infinite}
@keyframes scrollFloat{0%,100%{transform:translateY(0);opacity:.5}50%{transform:translateY(10px);opacity:1}}

/* ===== anchor bar ===== */
.anchor-bar{position:sticky;top:var(--header-h);z-index:40;background:var(--surface);border-bottom:1px solid var(--line)}
.anchor-inner{display:flex;gap:34px;overflow-x:auto;scrollbar-width:none;height:54px;align-items:center}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-link{position:relative;font-size:14.5px;color:var(--text-2);white-space:nowrap;padding:4px 0;transition:color .2s ease}
.anchor-link::after{content:"";position:absolute;left:0;right:0;bottom:-16px;height:2px;background:var(--gold-500);transform:scaleX(0);transition:transform .25s ease}
.anchor-link:hover{color:var(--ink-700)}
.anchor-link.is-active{color:var(--ink-700);font-weight:500}
.anchor-link.is-active::after{transform:scaleX(1)}

/* ===== sections ===== */
.section{padding:118px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:52px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.14em;color:var(--gold-500);margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--gold-500);display:block}
.section-title{font-size:clamp(26px,3vw,34px);color:var(--ink-700);max-width:20em}
.section-sub{margin-top:16px;font-size:16px;color:var(--text-2);max-width:44em;line-height:1.85}

/* ===== feature cards ===== */
.feature-row{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch}
.feature-row.reverse{grid-template-columns:5fr 7fr;margin-top:24px}
.feature-stack{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-1);transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(201,164,106,.55)}
.card-lg{display:flex;flex-direction:column;overflow:hidden}
.card-lg .card-media{position:relative;overflow:hidden;border-radius:var(--radius-lg) var(--radius-lg) 0 0}
.card-lg .card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .55s cubic-bezier(.22,.61,.36,1)}
.card-lg:hover .card-media img{transform:scale(1.03)}
.card-body{padding:30px 32px 32px}
.card-icon{width:34px;height:34px;margin-bottom:18px}
.card-title{font-size:20px;color:var(--ink-700)}
.card-text{margin-top:12px;font-size:15px;color:var(--text-2);line-height:1.85}
.card-link{display:inline-flex;align-items:center;gap:6px;margin-top:20px;font-size:14.5px;color:var(--ink-700);border-bottom:1px solid var(--gold-300);padding-bottom:2px;transition:color .2s ease,border-color .2s ease}
.card:hover .card-link{color:var(--gold-500);border-color:var(--gold-500)}
.card-sm{padding:28px 30px}
.card-sm .card-title{font-size:18px}
.card-sm .card-text{font-size:14.5px}

/* ===== demo ===== */
.demo-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.steps{border-top:1px solid var(--line);margin-top:8px}
.step{display:flex;gap:20px;padding:24px 0;border-bottom:1px solid var(--line);cursor:pointer;opacity:.55;transition:opacity .28s ease}
.step:hover{opacity:.85}
.step.is-active{opacity:1}
.step-num{font-family:var(--serif);font-size:38px;line-height:1;color:var(--gold-500);min-width:64px;font-variant-numeric:tabular-nums}
.step-title{font-size:18px;color:var(--ink-700)}
.step-text{margin-top:8px;font-size:14.5px;color:var(--text-2);line-height:1.8}
.demo-visual{position:relative;border-radius:14px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1);background:var(--surface)}
.demo-visual img{width:100%;aspect-ratio:16/9;object-fit:cover}
.demo-visual::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:linear-gradient(90deg,var(--gold-500),rgba(201,164,106,.15))}
.demo-caption{padding:18px 24px;font-size:14px;color:var(--text-2);border-top:1px solid var(--line);background:var(--surface)}

/* ===== proof ===== */
.proof-stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat{padding:38px 28px;text-align:left;position:relative}
.stat+.stat::before{content:"";position:absolute;left:0;top:26px;bottom:26px;width:1px;background:var(--line)}
.stat-num{font-family:var(--serif);font-size:clamp(34px,3.6vw,46px);color:var(--ink-700);line-height:1}
.stat-num small{font-size:14px;font-family:var(--sans);color:var(--text-3);margin-left:6px;letter-spacing:0}
.stat-label{margin-top:12px;font-size:14px;color:var(--text-2)}
.proof-logos{display:flex;flex-wrap:wrap;justify-content:space-between;gap:24px;padding:36px 0;border-bottom:1px solid var(--line)}
.proof-logo{font-family:var(--serif);font-size:16px;color:var(--text-3);opacity:.5;transition:opacity .25s ease,color .25s ease}
.proof-logo:hover{opacity:1;color:var(--ink-700)}
.quotes{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:52px}
.quote{background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--gold-500);border-radius:0 var(--radius-md) var(--radius-md) 0;padding:28px 30px;box-shadow:var(--shadow-1)}
.quote p{font-size:16px;color:var(--text);line-height:1.85}
.quote cite{display:block;margin-top:16px;font-style:normal;font-size:13px;color:var(--text-3)}

/* ===== news ===== */
.news-feature{display:grid;grid-template-columns:5fr 7fr;gap:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .28s ease,box-shadow .28s ease}
.news-feature:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.news-feature-media{overflow:hidden}
.news-feature-media img{width:100%;height:100%;min-height:260px;object-fit:cover;transition:transform .55s cubic-bezier(.22,.61,.36,1)}
.news-feature:hover .news-feature-media img{transform:scale(1.03)}
.news-feature-body{padding:34px 36px;display:flex;flex-direction:column;justify-content:center}
.tag{display:inline-block;font-size:12.5px;padding:5px 14px;border-radius:999px;background:rgba(122,91,194,.1);color:var(--nebula);margin-bottom:16px;align-self:flex-start}
.news-feature-body h3{font-size:21px;color:var(--ink-700);line-height:1.45;transition:color .2s ease}
.news-feature:hover .news-feature-body h3{color:var(--gold-500)}
.news-feature-body .summary{margin-top:12px;font-size:14.8px;color:var(--text-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.meta{margin-top:18px;font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:10px}
.meta .sep{width:1px;height:12px;background:var(--line)}
.news-list{margin-top:26px;border-top:1px solid var(--line)}
.news-item{border-bottom:1px solid var(--line);transition:background .22s ease}
.news-item a{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:22px 18px}
.news-item:hover{background:#FAF9F7}
.news-item .row-left{min-width:0}
.news-item h4{font-family:var(--serif);font-size:16.5px;color:var(--ink-700);transition:color .2s ease}
.news-item:hover h4{color:var(--gold-500)}
.news-item .row-sum{margin-top:6px;font-size:14px;color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:64ch}
.news-item .row-date{font-size:13px;color:var(--text-3);white-space:nowrap;flex-shrink:0}
.empty-state{background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius-lg);padding:64px 32px;text-align:center;color:var(--text-3)}
.empty-state svg{width:32px;height:32px;margin:0 auto 16px;color:var(--gold-500)}
.empty-state p{font-size:15px;color:var(--text-2)}
.empty-state .btn{margin-top:22px}

/* ===== pricing ===== */
.pricing-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:stretch}
.price-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:40px 38px;display:flex;flex-direction:column;box-shadow:var(--shadow-1);transition:transform .28s ease,box-shadow .28s ease}
.price-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.price-card.is-featured{background:var(--ink-700);color:#fff;border-color:var(--ink-500);transform:scale(1.02);position:relative;box-shadow:0 30px 60px -34px rgba(22,17,47,.7)}
.price-card.is-featured:hover{transform:scale(1.02) translateY(-2px)}
.price-card.is-featured .price-name,.price-card.is-featured .price-amount{color:#fff}
.price-card.is-featured .price-desc,.price-card.is-featured .price-features li{color:rgba(255,255,255,.8)}
.price-card.is-featured .price-features li::before{background:var(--gold-300)}
.price-badge{position:absolute;top:-13px;right:32px;background:var(--gold-500);color:var(--ink-900);font-size:12.5px;padding:5px 16px;border-radius:999px;letter-spacing:.04em}
.price-name{font-size:19px;color:var(--ink-700)}
.price-desc{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.8;min-height:50px}
.price-amount{margin-top:22px;font-family:var(--serif);font-size:clamp(34px,3.6vw,44px);color:var(--ink-700);line-height:1;display:flex;align-items:baseline;gap:8px}
.price-amount span{font-size:14px;font-family:var(--sans);color:var(--text-3);letter-spacing:0}
.price-features{margin:28px 0 30px;display:flex;flex-direction:column;gap:14px}
.price-features li{position:relative;padding-left:24px;font-size:15px;color:var(--text-2);line-height:1.7}
.price-features li::before{content:"";position:absolute;left:0;top:11px;width:12px;height:1px;background:var(--gold-500)}
.price-card .btn{margin-top:auto;width:100%}
.price-note{margin-top:26px;text-align:center;font-size:13px;color:var(--text-3)}

/* ===== faq ===== */
.faq-grid{display:grid;grid-template-columns:6fr 6fr;gap:64px;align-items:start}
.faq-aside .section-title{max-width:14em}
.faq-aside p{margin-top:18px;font-size:15.5px;color:var(--text-2);line-height:1.85}
.faq-aside .btn{margin-top:28px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;text-align:left;padding:22px 4px;font-size:16.5px;font-family:var(--serif);color:var(--text);transition:color .22s ease}
.faq-q:hover{color:var(--ink-700)}
.faq-item.is-open .faq-q{color:var(--ink-700)}
.faq-icon{position:relative;width:18px;height:18px;flex-shrink:0}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--gold-500);transition:transform .3s ease}
.faq-icon::before{left:0;top:8.5px;width:18px;height:1.5px}
.faq-icon::after{top:0;left:8.5px;width:1.5px;height:18px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a p{padding:0 4px 24px;font-size:15px;color:var(--text-2);line-height:1.85}

/* ===== cta band ===== */
.cta-band{position:relative;background:var(--ink-700);color:#fff;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background-image:radial-gradient(1.5px 1.5px at 12% 30%,rgba(228,207,163,.7),transparent 60%),radial-gradient(1.3px 1.3px at 46% 66%,rgba(255,255,255,.5),transparent 60%),radial-gradient(1.6px 1.6px at 78% 28%,rgba(228,207,163,.6),transparent 60%),radial-gradient(1.2px 1.2px at 90% 74%,rgba(255,255,255,.4),transparent 60%)}
.cta-inner{position:relative;text-align:center;padding:86px 0}
.cta-inner h2{font-size:clamp(24px,2.8vw,32px);color:#fff}
.cta-inner p{margin-top:16px;font-size:16px;color:rgba(255,255,255,.78)}
.cta-inner .btn{margin-top:32px}

/* ===== footer ===== */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding-top:72px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:44px;padding-bottom:52px}
.footer-brand .brand-name{color:#fff;font-size:16.5px}
.footer-brand .brand-mark{margin-bottom:0}
.footer-brand .brand{color:#fff}
.footer-about{margin-top:18px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.62)}
.footer-col h3{font-size:15px;color:#fff;font-family:var(--serif);margin-bottom:20px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.66);transition:color .2s ease}
.footer-links a:hover{color:var(--gold-300)}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:14px;color:rgba(255,255,255,.66)}
.footer-contact strong{color:#fff;font-weight:500}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0 28px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12.5px;color:rgba(255,255,255,.48)}

/* ===== float cta ===== */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:40;display:inline-flex;align-items:center;gap:9px;background:var(--ink-700);color:#fff;border-radius:999px;padding:13px 24px;font-size:15px;box-shadow:0 18px 40px -18px rgba(22,17,47,.7);border:1px solid transparent;opacity:0;visibility:hidden;transform:translateY(14px);transition:opacity .3s ease,transform .3s ease,visibility .3s ease,border-color .2s ease}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{border-color:var(--gold-500)}
.float-cta svg{width:19px;height:19px}

/* ===== reveal ===== */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .48s cubic-bezier(.22,.61,.36,1),transform .48s cubic-bezier(.22,.61,.36,1)}
.reveal.is-visible{opacity:1;transform:none}

/* ===== responsive ===== */
@media (max-width:1280px){
  .hero-grid{gap:44px}
  .container{padding:0 28px}
}
@media (max-width:1024px){
  :root{--header-h:60px}
  .container{padding:0 24px}
  .nav-main,.header-actions .search-box{display:none}
  .menu-toggle{display:flex}
  .section{padding:86px 0}
  .hero-grid{grid-template-columns:1fr;gap:44px;padding:64px 24px 84px;min-height:auto}
  .hero-title{max-width:100%}
  .hero-visual{max-width:640px}
  .hero-float{left:0}
  .feature-row,.feature-row.reverse{grid-template-columns:1fr;gap:22px}
  .feature-stack{grid-template-rows:auto;gap:22px}
  .demo-grid{grid-template-columns:1fr;gap:36px}
  .proof-stats{grid-template-columns:1fr 1fr}
  .stat{padding:30px 22px}
  .stat:nth-child(3)::before{display:none}
  .stat:nth-child(3),.stat:nth-child(4){border-top:1px solid var(--line)}
  .quotes{grid-template-columns:1fr}
  .news-feature{grid-template-columns:1fr}
  .news-feature-media img{min-height:220px;aspect-ratio:16/9}
  .pricing-grid{grid-template-columns:1fr}
  .price-card.is-featured{transform:none;order:-1}
  .price-card.is-featured:hover{transform:translateY(-2px)}
  .faq-grid{grid-template-columns:1fr;gap:38px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .footer-brand{grid-column:1 / -1}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:40px}
}
@media (max-width:768px){
  body{font-size:16px}
  .section{padding:70px 0}
  .cta-inner{padding:64px 0}
  .proof-logos{justify-content:flex-start;gap:20px 28px}
  .news-item a{padding:18px 8px;flex-direction:column;align-items:flex-start;gap:8px}
  .news-item .row-sum{white-space:normal;max-width:100%}
  .price-card{padding:32px 26px}
  .float-cta{right:12px;left:12px;bottom:12px;justify-content:center;border-radius:12px;padding:14px 18px}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .header-inner{gap:12px}
  .brand-name{font-size:15.5px}
  .hero-grid{padding:48px 20px 72px}
  .hero-tag{font-size:12px;padding:5px 13px}
  .hero-sub{font-size:15.5px}
  .hero-points li{padding:0 12px;font-size:13px}
  .card-body{padding:24px 22px 26px}
  .card-sm{padding:24px 22px}
  .stat{padding:24px 16px}
  .stat-num{font-size:32px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .anchor-inner{gap:24px}
  .hero-float{position:static;margin-top:16px;display:inline-flex}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink-900:#16112F;
  --ink-700:#241C4A;
  --ink-500:#3A2E6E;
  --gold-500:#C9A46A;
  --gold-300:#E4CFA3;
  --nebula:#7A5BC2;
  --bg:#F7F6F3;
  --surface:#FFFFFF;
  --line:#E7E4DE;
  --text:#1E1B2A;
  --text-2:#565064;
  --text-3:#8B8698;
  --danger:#C0563F;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-card:0 1px 2px rgba(36,28,74,.06), 0 12px 32px -18px rgba(36,28,74,.18);
  --shadow-hover:0 2px 6px rgba(36,28,74,.08), 0 22px 46px -22px rgba(36,28,74,.28);
  --font-serif:"Noto Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --wrap:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::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:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
body.drawer-open{overflow:hidden}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .25s var(--ease),border-color .25s var(--ease),background-color .25s var(--ease)}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:600;line-height:1.25;color:var(--ink-700);letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0}
:focus-visible{outline:2px solid var(--gold-500);outline-offset:2px;border-radius:4px}
::selection{background:var(--gold-300);color:var(--ink-900)}
.container{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 32px}
@media (max-width:1024px){.container{padding:0 24px}}
@media (max-width:640px){.container{padding:0 20px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(36,28,74,.07)}
.header-inner{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:26px;height:26px;flex-shrink:0}
.brand-name{
  font-family:var(--font-serif);
  font-size:17px;font-weight:600;letter-spacing:.01em;color:var(--ink-700);
  white-space:nowrap;
}
.nav-main{display:flex;align-items:center;gap:30px;margin-left:8px}
.nav-link{
  position:relative;font-size:15px;color:var(--text-2);padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--gold-500);transform:scaleX(0);transform-origin:left;transition:transform .28s var(--ease);
}
.nav-link:hover{color:var(--ink-700)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink-700);font-weight:600}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 16px;border-radius:999px;
  background:var(--bg);border:1px solid var(--line);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.search-box:focus-within{border-color:var(--gold-500);box-shadow:0 0 0 3px rgba(201,164,106,.18)}
.search-box svg{width:16px;height:16px;stroke:var(--text-3);flex-shrink:0}
.search-box input{
  border:0;background:transparent;outline:none;width:170px;font-size:14px;color:var(--text);
}
.search-box input::placeholder{color:var(--text-3)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-size:15px;font-weight:600;line-height:1;
  padding:13px 26px;border:1px solid transparent;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background-color .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease);
  white-space:nowrap;
}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--ink-700);color:#fff;box-shadow:var(--shadow-card)}
.btn-primary:hover{transform:translateY(-2px);border-color:var(--gold-500);box-shadow:var(--shadow-hover)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-700)}
.btn-ghost:hover{background:var(--bg);transform:translateY(-2px);border-color:var(--gold-300)}
.btn-ghost:active{transform:translateY(0)}
.btn-gold{background:var(--gold-500);color:var(--ink-900)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.text-link{color:var(--ink-700);font-weight:600;border-bottom:1px solid var(--gold-300)}
.text-link:hover{color:var(--gold-500);border-color:var(--gold-500)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  align-items:center;justify-content:center;background:var(--surface);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-700);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-700);border-radius:2px;transition:transform .25s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:86vw;z-index:80;
  background:var(--surface);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .34s var(--ease);
  padding:26px 24px;display:flex;flex-direction:column;gap:8px;
  box-shadow:-18px 0 40px -24px rgba(36,28,74,.3);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line)}
.drawer-title{font-family:var(--font-serif);font-size:16px;color:var(--ink-700)}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);line-height:1;font-size:18px;color:var(--text-2)}
.drawer-links{display:flex;flex-direction:column;margin-top:6px}
.drawer-links a{padding:15px 2px;font-size:15px;color:var(--text-2);border-bottom:1px solid var(--line)}
.drawer-links a:hover,.drawer-links a.is-active{color:var(--ink-700);font-weight:600}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px}
.drawer .search-box{width:100%}
.drawer .search-box input{width:100%}
.drawer-mask{
  position:fixed;inset:0;background:rgba(22,17,47,.42);z-index:70;opacity:0;visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ---------- breadcrumb ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--text-3)}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--ink-700)}
.crumb-sep{color:var(--line)}
.crumb-current{color:var(--gold-500)}

/* ---------- article masthead ---------- */
.article-masthead{background:var(--surface);border-bottom:1px solid var(--line);padding:36px 0 44px}
.article-masthead .crumb{margin-bottom:22px}
.article-title{font-size:clamp(30px,4.2vw,42px);line-height:1.2;color:var(--ink-900);max-width:900px}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;
  margin-top:22px;font-size:13px;color:var(--text-3);
}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;
  padding:5px 13px;border-radius:999px;background:rgba(122,91,194,.1);color:var(--nebula);
}
.badge-gold{background:rgba(228,207,163,.32);color:var(--ink-700)}
.meta-dot{width:3px;height:3px;border-radius:50%;background:var(--line)}

/* ---------- layout ---------- */
.article-wrap{padding:56px 0 88px}
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 208px;gap:56px;
  max-width:1080px;margin:0 auto;
}
.article-lead{
  border-left:3px solid var(--gold-500);padding:4px 0 4px 18px;
  font-size:17.5px;color:var(--ink-700);line-height:1.85;margin-bottom:34px;
}
.article-body{font-size:17px;line-height:1.9;color:var(--text-2);max-width:780px}
.article-body > * + *{margin-top:1.2em}
.article-body h2{
  font-size:26px;line-height:1.4;color:var(--ink-700);margin-top:44px;
  position:relative;padding-left:28px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.62em;width:16px;height:2px;background:var(--gold-500);border-radius:2px;
}
.article-body h3{font-size:20px;color:var(--ink-700);margin-top:32px}
.article-body p{margin-top:1.1em}
.article-body ul{list-style:none;padding-left:18px;margin-top:1.05em}
.article-body ul > li{position:relative;padding-left:16px;margin-top:8px}
.article-body ul > li::before{
  content:"";position:absolute;left:0;top:.82em;width:6px;height:6px;border-radius:50%;background:var(--gold-500);
}
.article-body ol{padding-left:1.5em;margin-top:1.05em}
.article-body ol > li{margin-top:8px;padding-left:4px}
.article-body ol::marker,.article-body ol > li::marker{color:var(--gold-500);font-weight:600}
.article-body blockquote{
  background:var(--bg);border-left:3px solid var(--gold-500);border-radius:0 12px 12px 0;
  padding:20px 24px;color:var(--text-2);font-size:16px;
}
.article-body blockquote p{margin:0}
.article-body img{border-radius:12px;margin-top:26px;width:100%;height:auto}
.article-body figure{margin:26px 0 0}
.article-body figcaption,.article-body .caption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body a{color:var(--ink-700);border-bottom:1px solid var(--gold-300)}
.article-body a:hover{color:var(--gold-500);border-color:var(--gold-500)}
.article-body table{width:100%;border-collapse:collapse;margin-top:26px;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:var(--bg);color:var(--ink-700);font-weight:600}
.article-body pre{
  background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:18px 20px;
  overflow-x:auto;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;line-height:1.7;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em;
  background:rgba(122,91,194,.1);color:var(--ink-500);padding:2px 6px;border-radius:6px;
}
.article-body pre code{background:none;color:inherit;padding:0}

/* ---------- toc ---------- */
.article-toc{position:sticky;top:104px;align-self:start}
.toc-title{font-size:13px;letter-spacing:.08em;color:var(--text-3);text-transform:uppercase;margin-bottom:14px}
.toc-list{display:flex;flex-direction:column;border-left:1px solid var(--line)}
.toc-link{
  display:block;font-size:14px;color:var(--text-3);padding:7px 0 7px 16px;
  border-left:2px solid transparent;margin-left:-1px;line-height:1.6;
  transition:color .25s var(--ease),border-color .25s var(--ease);
}
.toc-link.is-sub{padding-left:28px;font-size:13px}
.toc-link:hover{color:var(--ink-700)}
.toc-link.is-active{color:var(--ink-700);font-weight:600;border-left-color:var(--gold-500)}
.toc-cta{margin-top:26px;padding:20px;border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-card)}
.toc-cta h3{font-size:16px;margin-bottom:8px}
.toc-cta p{font-size:13.5px;color:var(--text-2);line-height:1.7;margin-bottom:14px}

/* ---------- tags & share ---------- */
.article-foot{margin-top:52px;padding-top:26px;border-top:1px solid var(--line);max-width:780px}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.tag-row .tag-label{font-size:13px;color:var(--text-3);margin-right:2px}
.tag{
  display:inline-flex;align-items:center;font-size:13px;padding:6px 14px;border-radius:999px;
  background:rgba(122,91,194,.1);color:var(--nebula);transition:background-color .25s var(--ease),color .25s var(--ease);
}
.tag:hover{background:var(--ink-700);color:#fff}

/* ---------- related ---------- */
.related{padding:0 0 84px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.section-head h2{font-size:28px}
.section-head p{font-size:14.5px;color:var(--text-2);margin-top:8px}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-card);display:flex;flex-direction:column;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--gold-300)}
.card-media{aspect-ratio:16/9;overflow:hidden;background:var(--bg)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px;line-height:1.45}
.card-body p{font-size:14.5px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{font-size:13px;color:var(--text-3);margin-top:auto;padding-top:6px}
.card:hover h3{color:var(--gold-500)}

/* ---------- prev next ---------- */
.prevnext{
  display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;margin-bottom:34px;
}
.prevnext a{
  background:var(--surface);padding:22px 24px;display:flex;flex-direction:column;gap:6px;
  transition:background-color .25s var(--ease);
}
.prevnext a:hover{background:#FAF9F7}
.prevnext .pn-label{font-size:12.5px;color:var(--text-3)}
.prevnext .pn-title{font-size:15.5px;color:var(--ink-700);font-weight:600;line-height:1.5}
.prevnext a:hover .pn-title{color:var(--gold-500)}
.prevnext .pn-right{align-items:flex-end;text-align:right}

/* ---------- empty state ---------- */
.empty-state{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:56px 32px;text-align:center;box-shadow:var(--shadow-card);max-width:780px;
}
.empty-state svg{width:34px;height:34px;stroke:var(--gold-500);margin:0 auto 16px}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:22px}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink-700);
  padding:78px 0;text-align:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(22,17,47,.86),rgba(36,28,74,.82)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;opacity:.95;
}
.cta-inner{position:relative;z-index:1;max-width:720px;margin:0 auto}
.cta-band h2{color:#fff;font-size:clamp(26px,3.4vw,34px);margin-bottom:14px}
.cta-band p{color:rgba(255,255,255,.78);font-size:16px;margin-bottom:28px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* ---------- float cta ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:40;
  display:inline-flex;align-items:center;gap:8px;
  background:var(--ink-700);color:#fff;border-radius:999px;padding:13px 22px;font-size:14.5px;font-weight:600;
  box-shadow:var(--shadow-hover);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s var(--ease);
}
.float-cta svg{width:18px;height:18px}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{border:1px solid var(--gold-500)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:68px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-name{color:#fff}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:320px}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:18px;font-family:var(--font-sans);font-weight:600}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.66)}
.footer-links a:hover{color:var(--gold-300)}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:14px;color:rgba(255,255,255,.6)}
.footer-contact strong{color:rgba(255,255,255,.86);font-weight:600}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.5);
}

/* ---------- reveal ---------- */
.js-reveal .reveal{opacity:0;transform:translateY(10px)}
.js-reveal .reveal.is-in{
  opacity:1;transform:none;
  transition:opacity .48s var(--ease),transform .48s var(--ease);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-main{display:none}
  .search-box{display:none}
  .nav-toggle{display:inline-flex}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;max-width:780px}
  .article-toc{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:860px){
  .card-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .header-inner{height:62px;gap:14px}
  .brand-name{font-size:16px}
  .btn{padding:11px 20px;font-size:14px}
  .article-masthead{padding:26px 0 32px}
  .article-wrap{padding:40px 0 64px}
  .article-body{font-size:16.5px}
  .article-body h2{font-size:22px;margin-top:36px}
  .article-body h3{font-size:18.5px}
  .related{padding-bottom:64px}
  .section-head{flex-direction:column;align-items:flex-start}
  .card-grid{grid-template-columns:1fr}
  .prevnext{grid-template-columns:1fr}
  .prevnext .pn-right{align-items:flex-start;text-align:left}
  .cta-band{padding:60px 0}
  .float-cta{display:none}
}
@media (max-width:640px){
  .article-title{font-size:27px}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding-top:52px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
  .js-reveal .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
    --ink-900:#16112F;
    --ink-700:#241C4A;
    --ink-500:#3A2E6E;
    --gold-500:#C9A46A;
    --gold-300:#E4CFA3;
    --nebula:#7A5BC2;
    --bg:#F7F6F3;
    --surface:#FFFFFF;
    --line:#E7E4DE;
    --text:#1E1B2A;
    --text-2:#565064;
    --text-3:#8B8698;
    --danger:#C0563F;
    --radius-lg:16px;
    --radius-md:12px;
    --radius-sm:10px;
    --shadow-1:0 1px 2px rgba(36,28,74,.06), 0 12px 32px -18px rgba(36,28,74,.18);
    --shadow-2:0 2px 4px rgba(36,28,74,.08), 0 18px 40px -20px rgba(36,28,74,.26);
    --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
    --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
    --ease:cubic-bezier(.22,.61,.36,1);
  }

  *,*::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:16.5px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{max-width:100%;display:block;height:auto;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;}
  input,button{font-size:100%;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{padding:0;list-style:none;}
  time{font-variant-numeric:tabular-nums;}

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }
  @media (min-width:768px){ .container{padding-left:24px;padding-right:24px;} }
  @media (min-width:1024px){ .container{padding-left:32px;padding-right:32px;} }

  /* ---------- 头部 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:50;
    background:var(--surface);
    border-bottom:1px solid var(--line);
    transition:box-shadow .28s var(--ease);
  }
  .site-header.is-scrolled{ box-shadow:0 2px 12px rgba(36,28,74,.08); }
  .header-inner{
    display:flex;
    align-items:center;
    gap:22px;
    height:70px;
  }
  .brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand-mark{width:26px;height:26px;flex-shrink:0;}
  .brand-name{
    font-family:var(--font-serif);
    font-size:17px;
    font-weight:600;
    letter-spacing:.02em;
    color:var(--ink-700);
    white-space:nowrap;
  }
  .nav-main{display:none;align-items:center;gap:30px;margin-left:8px;}
  .nav-link{
    position:relative;
    font-size:14.5px;
    color:var(--text-2);
    padding:6px 0;
    transition:color .2s var(--ease);
  }
  .nav-link:hover{color:var(--ink-700);}
  .nav-link.is-active{color:var(--ink-700);font-weight:600;}
  .nav-link.is-active::after{
    content:"";
    position:absolute;
    left:0;right:0;bottom:-2px;
    height:2px;
    border-radius:2px;
    background:var(--gold-500);
  }
  .nav-link:focus-visible{outline:2px solid var(--nebula);outline-offset:3px;border-radius:4px;}
  .header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
  .search-box{
    display:none;
    align-items:center;
    gap:8px;
    height:40px;
    padding:0 14px;
    background:var(--bg);
    border:1px solid var(--line);
    border-radius:999px;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .search-box svg{width:16px;height:16px;flex-shrink:0;stroke:var(--text-3);}
  .search-box input{
    border:0;
    background:transparent;
    outline:none;
    width:150px;
    font-size:14px;
    color:var(--text);
  }
  .search-box input::placeholder{color:var(--text-3);}
  .search-box:focus-within{
    border-color:var(--gold-500);
    box-shadow:0 0 0 3px rgba(201,164,106,.18);
  }

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    border-radius:999px;
    border:1px solid transparent;
    font-size:15px;
    font-weight:600;
    padding:12px 26px;
    cursor:pointer;
    transition:transform .24s var(--ease),box-shadow .24s var(--ease),background-color .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);
    white-space:nowrap;
  }
  .btn-primary{background:var(--ink-700);color:#fff;box-shadow:var(--shadow-1);}
  .btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--gold-500);}
  .btn-primary:active{transform:translateY(0);}
  .btn-primary:focus-visible{outline:2px solid var(--nebula);outline-offset:2px;}
  .btn-primary:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
  .btn-sm{padding:9px 18px;font-size:14px;}
  .btn-ghost{
    background:transparent;
    border-color:var(--line);
    color:var(--ink-700);
    border-radius:var(--radius-sm);
    font-weight:600;
  }
  .btn-ghost:hover{background:#fff;border-color:var(--ink-700);transform:translateY(-2px);}
  .btn-ghost:focus-visible{outline:2px solid var(--nebula);outline-offset:2px;}
  .btn-gold{background:var(--gold-500);color:#1E1B2A;box-shadow:0 12px 30px -16px rgba(201,164,106,.9);}
  .btn-gold:hover{background:#D7B47E;transform:translateY(-2px);}
  .btn-gold:focus-visible{outline:2px solid #fff;outline-offset:2px;}
  .btn-ghost-dark{
    background:transparent;
    border-color:rgba(228,207,163,.5);
    color:var(--gold-300);
    border-radius:var(--radius-sm);
  }
  .btn-ghost-dark:hover{background:rgba(228,207,163,.12);border-color:var(--gold-300);transform:translateY(-2px);}

  .menu-toggle{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:42px;height:42px;
    border:1px solid var(--line);
    border-radius:12px;
    background:#fff;
    cursor:pointer;
    transition:border-color .2s var(--ease),background-color .2s var(--ease);
  }
  .menu-toggle:hover{border-color:var(--gold-500);background:var(--bg);}
  .menu-toggle:focus-visible{outline:2px solid var(--nebula);outline-offset:2px;}
  .menu-toggle span{
    display:block;width:18px;height:2px;background:var(--ink-700);border-radius:2px;position:relative;
  }
  .menu-toggle span::before,
  .menu-toggle span::after{
    content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-700);border-radius:2px;
  }
  .menu-toggle span::before{top:-6px;}
  .menu-toggle span::after{top:6px;}

  @media (min-width:1024px){
    .nav-main{display:flex;}
    .search-box{display:flex;}
    .menu-toggle{display:none;}
  }
  @media (min-width:1180px){
    .search-box input{width:180px;}
  }

  /* ---------- 移动抽屉 ---------- */
  .drawer{
    position:fixed;
    top:0;right:0;bottom:0;
    width:min(320px,86vw);
    background:#fff;
    border-left:1px solid var(--line);
    box-shadow:-20px 0 50px -30px rgba(36,28,74,.4);
    transform:translateX(104%);
    transition:transform .32s var(--ease);
    z-index:80;
    display:flex;
    flex-direction:column;
    padding:20px;
    overflow-y:auto;
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
  .drawer-close{
    width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;
    font-size:18px;color:var(--ink-700);line-height:1;
  }
  .drawer-close:hover{border-color:var(--gold-500);}
  .drawer-nav{display:flex;flex-direction:column;}
  .drawer-nav a{
    padding:15px 2px;
    border-bottom:1px solid var(--line);
    font-size:15.5px;
    color:var(--text-2);
  }
  .drawer-nav a.is-active{color:var(--ink-700);font-weight:600;border-left:2px solid var(--gold-500);padding-left:12px;}
  .drawer-nav a:hover{color:var(--ink-700);}
  .drawer-foot{margin-top:22px;display:flex;flex-direction:column;gap:14px;}
  .drawer-search{
    display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;
    background:var(--bg);border:1px solid var(--line);border-radius:999px;
  }
  .drawer-search input{border:0;background:transparent;outline:none;width:100%;font-size:14.5px;}
  .drawer-search:focus-within{border-color:var(--gold-500);box-shadow:0 0 0 3px rgba(201,164,106,.18);}
  .scrim{
    position:fixed;inset:0;background:rgba(22,17,47,.42);opacity:0;pointer-events:none;
    transition:opacity .3s var(--ease);z-index:70;
  }
  .scrim.is-open{opacity:1;pointer-events:auto;}

  /* ---------- 页头 banner ---------- */
  .page-banner{
    position:relative;
    display:flex;
    align-items:center;
    min-height:230px;
    padding:56px 0 48px;
    color:#fff;
    overflow:hidden;
    background-image:linear-gradient(180deg,rgba(22,17,47,.88),rgba(36,28,74,.80)),url("/assets/images/backpic/back-1.webp");
    background-size:cover;
    background-position:center;
  }
  .page-banner::after{
    content:"";
    position:absolute;
    right:32px;bottom:26px;
    width:64px;height:1px;
    background:var(--gold-500);
    opacity:.9;
  }
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:12.5px;
    color:rgba(247,246,243,.66);
    margin-bottom:16px;
  }
  .breadcrumb a{color:rgba(247,246,243,.82);}
  .breadcrumb a:hover{color:var(--gold-300);}
  .breadcrumb .sep{color:rgba(247,246,243,.4);}
  .breadcrumb .current{color:var(--gold-300);}
  .page-banner h1{
    font-family:var(--font-serif);
    font-size:clamp(27px,3.8vw,40px);
    line-height:1.2;
    letter-spacing:-.01em;
    color:#fff;
    max-width:820px;
  }
  .page-banner .lead{
    margin-top:16px;
    max-width:660px;
    font-size:16px;
    color:rgba(247,246,243,.84);
  }
  @media (min-width:768px){
    .page-banner{min-height:260px;padding:68px 0 60px;}
    .page-banner::after{right:48px;bottom:34px;width:88px;}
  }

  /* ---------- 通用区块 ---------- */
  .section{padding:64px 0;}
  @media (min-width:768px){ .section{padding:80px 0;} }
  @media (min-width:1024px){ .section{padding:96px 0;} }

  .sec-head{max-width:740px;margin-bottom:36px;}
  .sec-head h2{
    font-family:var(--font-serif);
    font-size:clamp(23px,2.6vw,32px);
    line-height:1.28;
    letter-spacing:-.01em;
    color:var(--ink-700);
  }
  .sec-head p{margin-top:14px;color:var(--text-2);font-size:16px;}

  .tag-row{display:flex;flex-wrap:wrap;gap:10px;}
  .tag{
    display:inline-flex;align-items:center;
    padding:6px 14px;
    font-size:12.5px;
    border-radius:999px;
    background:rgba(122,91,194,.10);
    color:var(--nebula);
    line-height:1.5;
  }
  .tag-gold{
    background:rgba(228,207,163,.28);
    color:var(--ink-700);
  }

  /* ---------- 概览 ---------- */
  .overview-grid{display:grid;gap:36px;}
  @media (min-width:1024px){
    .overview-grid{grid-template-columns:7fr 5fr;gap:56px;align-items:start;}
  }
  .overview-copy p{margin-bottom:18px;color:var(--text-2);line-height:1.9;}
  .overview-copy p:last-child{margin-bottom:0;}
  .overview-copy strong{color:var(--ink-700);}
  .fact-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    padding:26px 24px;
    box-shadow:var(--shadow-1);
  }
  .fact-card h3{
    font-family:var(--font-serif);
    font-size:19px;
    color:var(--ink-700);
    margin-bottom:14px;
  }
  .fact-list li{
    display:flex;
    gap:12px;
    padding:11px 0;
    border-bottom:1px solid var(--line);
    font-size:15px;
    color:var(--text-2);
    line-height:1.7;
  }
  .fact-list li:last-child{border-bottom:0;padding-bottom:0;}
  .fact-list li:first-child{padding-top:0;}
  .dot-gold{
    flex:0 0 auto;
    width:7px;height:7px;
    margin-top:9px;
    border-radius:50%;
    background:var(--gold-500);
  }

  /* ---------- 图文交替分节 ---------- */
  .stages{border-top:1px solid var(--line);}
  .stage{padding:56px 0;border-bottom:1px solid var(--line);}
  @media (min-width:768px){ .stage{padding:72px 0;} }
  .stage-grid{display:grid;gap:34px;}
  @media (min-width:1024px){
    .stage-grid{grid-template-columns:1fr 1fr;gap:64px;align-items:center;}
    .stage-grid--reverse .stage-media{order:-1;}
  }
  .stage-index{
    display:flex;align-items:center;gap:14px;
    font-family:var(--font-serif);
    font-size:36px;
    line-height:1;
    color:var(--gold-500);
    margin-bottom:16px;
    font-variant-numeric:tabular-nums;
  }
  .stage-index::after{content:"";display:block;width:64px;height:1px;background:var(--gold-300);}
  .stage-body h2{
    font-family:var(--font-serif);
    font-size:clamp(21px,2.3vw,28px);
    line-height:1.3;
    color:var(--ink-700);
    margin-bottom:16px;
  }
  .stage-body p{color:var(--text-2);line-height:1.9;margin-bottom:16px;}
  .point-list{margin-top:6px;}
  .point-list li{
    display:flex;gap:11px;
    padding:7px 0;
    font-size:15px;
    color:var(--text);
    line-height:1.7;
  }
  .check{
    flex:0 0 auto;
    position:relative;
    width:15px;height:15px;
    margin-top:5px;
    border:1px solid var(--gold-500);
    border-radius:4px;
  }
  .check::after{
    content:"";
    position:absolute;
    left:4px;top:1px;
    width:5px;height:8px;
    border-right:1.5px solid var(--gold-500);
    border-bottom:1.5px solid var(--gold-500);
    transform:rotate(42deg);
  }
  .stage-media img{
    width:100%;
    aspect-ratio:4/3;
    object-fit:cover;
    border-radius:14px;
    border:1px solid var(--line);
    box-shadow:var(--shadow-1);
    background:#EDEAE4;
  }
  .stage-media figcaption{
    margin-top:12px;
    font-size:13px;
    color:var(--text-3);
    text-align:center;
  }

  /* ---------- 场景区 ---------- */
  .scene-wrap{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .scene-grid{display:grid;gap:20px;}
  @media (min-width:768px){ .scene-grid{grid-template-columns:1fr 1fr;gap:24px;} }
  .scene-card{
    display:flex;
    gap:18px;
    padding:24px;
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    background:var(--bg);
    transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
  }
  .scene-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-1);border-color:var(--gold-300);}
  .scene-num{
    font-family:var(--font-serif);
    font-size:22px;
    color:var(--gold-500);
    line-height:1.2;
    flex:0 0 auto;
    font-variant-numeric:tabular-nums;
  }
  .scene-card h3{
    font-size:17.5px;
    color:var(--ink-700);
    margin-bottom:8px;
    font-weight:600;
  }
  .scene-card p{font-size:14.8px;color:var(--text-2);line-height:1.8;}

  /* ---------- FAQ ---------- */
  .faq-grid{display:grid;gap:34px;}
  @media (min-width:1024px){
    .faq-grid{grid-template-columns:5fr 7fr;gap:64px;align-items:start;}
  }
  .faq-side p{color:var(--text-2);margin-top:14px;line-height:1.9;}
  .faq-side .btn{margin-top:24px;}
  .faq-item{border-top:1px solid var(--line);}
  .faq-item:last-child{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;
    display:flex;
    align-items:flex-start;
    justify-content:space-between;
    gap:18px;
    padding:20px 0;
    background:none;
    border:0;
    cursor:pointer;
    text-align:left;
    font-size:16.5px;
    font-weight:600;
    color:var(--text);
    line-height:1.6;
    transition:color .2s var(--ease);
  }
  .faq-q:hover{color:var(--ink-700);}
  .faq-q:focus-visible{outline:2px solid var(--nebula);outline-offset:3px;border-radius:6px;}
  .faq-item.is-open .faq-q{color:var(--ink-700);}
  .faq-icon{
    position:relative;
    flex:0 0 auto;
    width:18px;height:18px;
    margin-top:5px;
    transition:transform .3s var(--ease);
  }
  .faq-icon::before,
  .faq-icon::after{
    content:"";
    position:absolute;
    background:var(--gold-500);
    border-radius:2px;
  }
  .faq-icon::before{left:0;top:8px;width:18px;height:1.6px;}
  .faq-icon::after{left:8px;top:0;width:1.6px;height:18px;}
  .faq-item.is-open .faq-icon{transform:rotate(45deg);}
  .faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height .3s var(--ease);
  }
  .faq-a-inner{padding:0 0 22px;color:var(--text-2);font-size:15px;line-height:1.9;max-width:62ch;}

  /* ---------- 底部转化 ---------- */
  .cta-band{
    position:relative;
    padding:72px 0;
    color:#fff;
    text-align:center;
    background-image:linear-gradient(180deg,rgba(22,17,47,.92),rgba(36,28,74,.88)),url("/assets/images/backpic/back-2.png");
    background-size:cover;
    background-position:center;
  }
  .cta-band h2{
    font-family:var(--font-serif);
    font-size:clamp(24px,3vw,34px);
    line-height:1.3;
    color:#fff;
  }
  .cta-band p{
    margin:16px auto 0;
    max-width:620px;
    color:rgba(247,246,243,.82);
    font-size:16px;
  }
  .cta-actions{
    margin-top:30px;
    display:flex;
    flex-wrap:wrap;
    gap:14px;
    justify-content:center;
  }

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:var(--ink-900);
    color:rgba(247,246,243,.72);
    padding:64px 0 28px;
    font-size:14px;
  }
  .footer-grid{display:grid;gap:36px;}
  @media (min-width:768px){ .footer-grid{grid-template-columns:1fr 1fr;gap:36px 40px;} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:48px;} }
  .footer-brand .brand{margin-bottom:16px;}
  .footer-brand .brand-name{color:#fff;}
  .footer-about{line-height:1.85;color:rgba(247,246,243,.66);max-width:34ch;font-size:14px;}
  .footer-col h3{
    font-size:15px;
    color:#fff;
    font-weight:600;
    margin-bottom:16px;
  }
  .footer-links{display:flex;flex-direction:column;gap:11px;}
  .footer-links a{
    color:rgba(247,246,243,.7);
    font-size:14px;
    transition:color .2s var(--ease),transform .2s var(--ease);
    display:inline-block;
  }
  .footer-links a:hover{color:var(--gold-300);transform:translateX(2px);}
  .footer-contact{display:flex;flex-direction:column;gap:11px;color:rgba(247,246,243,.7);font-size:14px;line-height:1.75;}
  .footer-contact strong{color:rgba(247,246,243,.92);font-weight:600;}
  .footer-bottom{
    margin-top:46px;
    padding-top:20px;
    border-top:1px solid rgba(247,246,243,.14);
    display:flex;
    flex-wrap:wrap;
    gap:10px 24px;
    justify-content:space-between;
    font-size:12.5px;
    color:rgba(247,246,243,.5);
  }

  /* ---------- 进入动画 ---------- */
  .js .reveal{opacity:0;transform:translateY(10px);}
  .js .reveal.is-in{
    opacity:1;
    transform:none;
    transition:opacity .48s var(--ease),transform .48s var(--ease);
  }
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto;}
    .js .reveal{opacity:1;transform:none;transition:none;}
    *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  }

  ::selection{background:rgba(201,164,106,.32);color:var(--ink-900);}
  .skip-link{
    position:absolute;left:-9999px;top:0;background:#fff;color:var(--ink-700);
    padding:10px 16px;border-radius:0 0 10px 0;z-index:99;
  }
  .skip-link:focus{left:0;}

/* roulang page: category1 */
:root{
  --ink-900:#16112F;
  --ink-700:#241C4A;
  --ink-500:#3A2E6E;
  --gold-500:#C9A46A;
  --gold-300:#E4CFA3;
  --nebula:#7A5BC2;
  --bg:#F7F6F3;
  --surface:#FFFFFF;
  --line:#E7E4DE;
  --text:#1E1B2A;
  --text-2:#565064;
  --text-3:#8B8698;
  --danger:#C0563F;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(36,28,74,.06),0 12px 32px -18px rgba(36,28,74,.18);
  --shadow-2:0 2px 6px rgba(36,28,74,.08),0 18px 44px -20px rgba(36,28,74,.26);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%;}
body.site-body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
h1,h2,h3,h4,p,figure,ul,ol{margin:0;padding:0;}
ul,ol{list-style:none;}
svg{display:block;}
:focus-visible{outline:2px solid var(--nebula);outline-offset:2px;border-radius:4px;}

/* ---------- 容器 ---------- */
.container,.shell{width:100%;margin-left:auto;margin-right:auto;padding-left:20px;padding-right:20px;}
.container.container{max-width:1200px;}
@media (min-width:768px){.container.container{padding-left:24px;padding-right:24px;}}
@media (min-width:1200px){.container.container{max-width:1200px;padding-left:32px;padding-right:32px;}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  border-radius:999px;padding:14px 26px;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background-color .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease);
}
.btn-primary{background:var(--ink-700);color:#fff;border-color:var(--ink-700);}
.btn-primary:hover{transform:translateY(-2px);border-color:var(--gold-500);box-shadow:0 14px 30px -14px rgba(36,28,74,.55);}
.btn-primary:active{transform:translateY(0);}
.btn-primary[disabled],.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-ghost{background:transparent;color:var(--ink-700);border-color:var(--line);border-radius:var(--radius-sm);}
.btn-ghost:hover{background:var(--bg);border-color:var(--gold-300);transform:translateY(-2px);}
.btn-gold{background:var(--gold-500);color:#231C14;border-color:var(--gold-500);}
.btn-gold:hover{background:var(--gold-300);border-color:var(--gold-300);transform:translateY(-2px);box-shadow:0 14px 30px -14px rgba(201,164,106,.75);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.42);border-radius:var(--radius-sm);}
.btn-outline-light:hover{border-color:var(--gold-300);color:var(--gold-300);transform:translateY(-2px);}
.btn-sm{padding:11px 20px;font-size:14px;}
.text-link{color:var(--ink-700);border-bottom:1px solid var(--gold-300);transition:color .25s var(--ease),border-color .25s var(--ease);}
.text-link:hover{color:var(--gold-500);border-color:var(--gold-500);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(36,28,74,.07);}
.header-inner{display:flex;align-items:center;gap:26px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{width:24px;height:24px;flex:none;}
.brand-name{font-family:var(--font-serif);font-size:16px;font-weight:600;letter-spacing:.01em;color:var(--ink-700);line-height:1.2;}
.nav-main{display:flex;align-items:center;gap:30px;margin-right:auto;}
.nav-link{position:relative;font-size:15px;color:var(--text-2);padding:6px 0;transition:color .25s var(--ease);}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--gold-500);
  transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);
}
.nav-link:hover{color:var(--ink-700);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink-700);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:14px;flex:none;}
.search-box{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 16px;
  background:var(--bg);border:1px solid transparent;border-radius:999px;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),background-color .25s var(--ease);
}
.search-box:focus-within{border-color:var(--gold-500);background:var(--surface);box-shadow:0 0 0 3px rgba(201,164,106,.2);}
.search-box svg{width:15px;height:15px;flex:none;stroke:var(--text-3);}
.search-box input{
  border:0;background:transparent;outline:none;width:146px;
  font-size:14px;line-height:1.4;color:var(--text);
}
.search-box input::placeholder{color:var(--text-3);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  transition:border-color .25s var(--ease),background-color .25s var(--ease);
}
.nav-toggle:hover{border-color:var(--gold-300);background:var(--bg);}
.nav-toggle span{display:block;width:17px;height:1.6px;background:var(--ink-700);border-radius:2px;transition:transform .3s var(--ease),opacity .3s var(--ease);}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(22,17,47,.46);z-index:60;
  opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(85vw,340px);z-index:70;
  background:var(--surface);padding:20px 22px 28px;overflow-y:auto;
  display:flex;flex-direction:column;
  transform:translateX(102%);transition:transform .35s var(--ease);
  box-shadow:-20px 0 44px -26px rgba(36,28,74,.5);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;transition:border-color .25s var(--ease);}
.drawer-close:hover{border-color:var(--gold-300);}
.drawer-close svg{width:14px;height:14px;stroke:var(--ink-700);}
.drawer-link{display:block;padding:16px 2px;border-bottom:1px solid var(--line);font-size:15px;color:var(--text-2);transition:color .25s var(--ease),padding-left .25s var(--ease);}
.drawer-link:hover{color:var(--ink-700);padding-left:6px;}
.drawer-link.is-active{color:var(--ink-700);font-weight:600;}
.drawer-foot{margin-top:22px;display:grid;gap:14px;}
.drawer .search-box{width:100%;}
.drawer .search-box input{width:100%;}

/* ---------- 页头横幅 ---------- */
.page-banner{position:relative;overflow:hidden;background:var(--ink-900);padding:64px 0 58px;min-height:264px;display:flex;align-items:center;}
.banner-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(22,17,47,.92) 0%,rgba(36,28,74,.78) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.banner-bg::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(1.6px 1.6px at 18% 30%,rgba(228,207,163,.55),transparent 65%),
                   radial-gradient(1.4px 1.4px at 62% 22%,rgba(228,207,163,.45),transparent 65%),
                   radial-gradient(1.8px 1.8px at 84% 58%,rgba(228,207,163,.4),transparent 65%);
}
.banner-inner{position:relative;z-index:2;width:100%;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;color:rgba(255,255,255,.62);margin-bottom:18px;}
.crumb a{transition:color .25s var(--ease);}
.crumb a:hover{color:#fff;}
.crumb .sep{color:rgba(255,255,255,.34);}
.crumb .current{color:var(--gold-300);}
.banner-badge{
  display:inline-flex;align-items:center;gap:7px;font-size:12.5px;letter-spacing:.04em;
  color:var(--gold-300);background:rgba(201,164,106,.14);
  border:1px solid rgba(201,164,106,.34);border-radius:999px;padding:5px 13px;margin-bottom:18px;
}
.banner-title{
  font-family:var(--font-serif);font-weight:600;line-height:1.22;letter-spacing:-.01em;
  color:#fff;font-size:clamp(29px,4.4vw,42px);max-width:780px;
}
.banner-lead{margin-top:18px;max-width:660px;font-size:16.5px;line-height:1.85;color:rgba(255,255,255,.78);}
.banner-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:24px;font-size:13.5px;color:rgba(255,255,255,.6);}
.banner-meta span{display:inline-flex;align-items:center;gap:8px;}
.banner-meta span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--gold-500);}
.banner-rule{position:absolute;right:32px;bottom:34px;width:56px;height:1px;background:var(--gold-500);z-index:2;}

/* ---------- 主体布局 ---------- */
.cat-main{padding:84px 0 96px;background:var(--bg);}
.cat-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:52px;}
@media (min-width:1024px){
  .cat-layout{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px;}
}
.cat-main-col{min-width:0;}
.prose-block{padding:0;}
.prose-block + .prose-block{margin-top:60px;padding-top:52px;border-top:1px solid var(--line);}
.prose-block h2{
  font-family:var(--font-serif);font-weight:600;line-height:1.34;color:var(--ink-700);
  font-size:clamp(21px,2.4vw,28px);margin-bottom:16px;
}
.prose-block h2::before{content:"";display:block;width:26px;height:2px;background:var(--gold-500);margin-bottom:16px;}
.prose-block p{font-size:17px;line-height:1.9;color:var(--text-2);margin-bottom:16px;}
.prose-block p:last-child{margin-bottom:0;}
.prose-block strong{color:var(--ink-700);font-weight:600;}

/* 步骤列表 */
.step-list{display:grid;gap:18px;margin-top:26px;}
.step-item{
  display:flex;gap:20px;padding:22px 24px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-1);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.step-item:hover{transform:translateY(-2px);border-color:var(--gold-300);box-shadow:var(--shadow-2);}
.step-num{font-family:var(--font-serif);font-size:32px;line-height:1;color:var(--gold-500);flex:none;min-width:44px;padding-top:2px;}
.step-body h3{font-size:17.5px;font-weight:600;color:var(--ink-700);margin-bottom:6px;}
.step-body p{font-size:15px;line-height:1.8;color:var(--text-2);margin:0;}

/* 图注 */
.figure-block{margin-top:28px;background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden;}
.figure-block img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.figure-block figcaption{padding:12px 18px;font-size:13px;color:var(--text-3);border-top:1px solid var(--line);}

/* 勾选列表 */
.check-list{display:grid;gap:13px;margin-top:22px;}
.check-list li{position:relative;padding-left:26px;font-size:16px;line-height:1.8;color:var(--text-2);}
.check-list li::before{
  content:"";position:absolute;left:2px;top:11px;width:11px;height:6px;
  border-left:1.8px solid var(--gold-500);border-bottom:1.8px solid var(--gold-500);
  transform:rotate(-45deg);
}

/* 有序排查 */
.order-list{counter-reset:step;display:grid;gap:15px;margin-top:22px;}
.order-list li{counter-increment:step;position:relative;padding-left:44px;font-size:16px;line-height:1.85;color:var(--text-2);}
.order-list li::before{
  content:counter(step,decimal-leading-zero);position:absolute;left:0;top:2px;
  font-family:var(--font-serif);font-size:15px;color:var(--gold-500);
}
.order-list li::after{
  content:"";position:absolute;left:34px;top:11px;width:1px;height:calc(100% + 4px);background:var(--line);
}
.order-list li:last-child::after{display:none;}

/* FAQ */
.faq-list{margin-top:22px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:19px 0;cursor:pointer;list-style:none;
  font-size:16.5px;line-height:1.65;color:var(--text);
  transition:color .25s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::marker{content:"";}
.faq-item summary:hover{color:var(--ink-700);}
.faq-item[open] summary{color:var(--ink-700);font-weight:600;}
.faq-mark{position:relative;width:18px;height:18px;flex:none;margin-top:4px;transition:transform .3s var(--ease);}
.faq-mark::before,.faq-mark::after{content:"";position:absolute;background:var(--gold-500);border-radius:2px;}
.faq-mark::before{left:0;top:8px;width:18px;height:1.6px;}
.faq-mark::after{left:8px;top:0;width:1.6px;height:18px;}
.faq-item[open] .faq-mark{transform:rotate(45deg);}
.faq-answer{padding:0 40px 20px 0;}
.faq-answer p{font-size:15px;line-height:1.9;color:var(--text-2);}

/* ---------- 侧栏 ---------- */
.side-col{display:flex;flex-direction:column;gap:22px;min-width:0;}
@media (min-width:1024px){.side-col{position:sticky;top:98px;}}
.panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 26px 24px;box-shadow:var(--shadow-1);
}
.panel h3{
  font-family:var(--font-serif);font-size:18.5px;font-weight:600;line-height:1.4;
  color:var(--ink-700);margin-bottom:14px;
}
.panel p{font-size:14.5px;line-height:1.85;color:var(--text-2);}
.panel-dark{background:var(--ink-700);border-color:var(--ink-500);box-shadow:0 18px 44px -22px rgba(36,28,74,.6);}
.panel-dark h3{color:#fff;}
.panel-dark p{color:rgba(255,255,255,.76);margin-bottom:20px;}
.panel-dark .btn{width:100%;}
.panel-dark .panel-sub{margin-top:14px;text-align:center;font-size:14px;}
.panel-dark .panel-sub a{color:var(--gold-300);border-bottom:1px solid rgba(228,207,163,.4);}
.panel-dark .panel-sub a:hover{color:#fff;border-color:#fff;}
.point-list{display:grid;gap:13px;}
.point-list li{position:relative;padding-left:18px;font-size:14.5px;line-height:1.8;color:var(--text-2);}
.point-list li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--gold-500);}
.link-list{display:grid;}
.link-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:13px 0;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--text-2);
  transition:color .25s var(--ease),padding-left .25s var(--ease);
}
.link-list a:last-child{border-bottom:0;padding-bottom:0;}
.link-list a::after{content:"→";font-size:13px;color:var(--gold-500);transition:transform .25s var(--ease);}
.link-list a:hover{color:var(--ink-700);padding-left:4px;}
.link-list a:hover::after{transform:translateX(3px);}

/* ---------- 转化条 ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--ink-700);padding:78px 0;text-align:center;}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 18% 26%,rgba(228,207,163,.16),transparent 46%),
                   radial-gradient(circle at 82% 72%,rgba(122,91,194,.26),transparent 50%);
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(1.5px 1.5px at 30% 40%,rgba(228,207,163,.5),transparent 60%),
                   radial-gradient(1.5px 1.5px at 70% 30%,rgba(228,207,163,.4),transparent 60%),
                   radial-gradient(1.5px 1.5px at 52% 78%,rgba(228,207,163,.35),transparent 60%);
}
.cta-inner{position:relative;z-index:2;max-width:740px;margin:0 auto;}
.cta-band h2{font-family:var(--font-serif);font-size:clamp(23px,3vw,33px);font-weight:600;line-height:1.36;color:#fff;margin-bottom:14px;}
.cta-band p{font-size:16px;line-height:1.85;color:rgba(255,255,255,.76);margin-bottom:28px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.7);padding:70px 0 0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:40px;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:44px;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.45fr 1fr 1fr 1.25fr;gap:48px;}}
.footer-brand .brand-name{color:#fff;}
.footer-about{margin-top:16px;font-size:14px;line-height:1.88;color:rgba(255,255,255,.62);max-width:330px;}
.footer-col h3{font-size:14px;font-weight:600;letter-spacing:.06em;color:#fff;margin-bottom:16px;}
.footer-links{display:grid;gap:11px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.66);transition:color .25s var(--ease),padding-left .25s var(--ease);}
.footer-links a:hover{color:var(--gold-300);padding-left:4px;}
.footer-contact{display:grid;gap:12px;font-size:14px;line-height:1.75;}
.footer-contact strong{color:rgba(255,255,255,.9);font-weight:600;}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 30px;display:flex;flex-wrap:wrap;gap:10px 24px;
  justify-content:space-between;font-size:12.5px;color:rgba(255,255,255,.46);
}

/* ---------- 动效 ---------- */
.js .reveal{opacity:0;transform:translateY(10px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.js .reveal.is-in{opacity:1;transform:translateY(0);}
.js .reveal.d1{transition-delay:.06s;}
.js .reveal.d2{transition-delay:.12s;}
.js .reveal.d3{transition-delay:.18s;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .js .reveal{opacity:1;transform:none;transition:none;}
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-main{display:none;}
  .header-actions .search-box{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:60px;justify-content:space-between;}
  .page-banner{padding:52px 0 46px;min-height:210px;}
  .cat-main{padding:64px 0 72px;}
}
@media (max-width:767px){
  .banner-rule{display:none;}
  .prose-block + .prose-block{margin-top:48px;padding-top:42px;}
  .step-item{flex-direction:row;gap:16px;padding:20px 18px;}
  .step-num{font-size:26px;min-width:36px;}
  .faq-answer{padding-right:0;}
  .panel{padding:22px 20px;}
  .cta-band{padding:60px 0;}
  .site-footer{padding-top:56px;}
  .footer-bottom{margin-top:40px;}
}
@media (max-width:519px){
  .header-actions .btn-sm{padding:10px 16px;font-size:13.5px;}
  .banner-title{font-size:27px;}
  .banner-lead{font-size:15.5px;}
  .prose-block p{font-size:16px;}
}

/* roulang page: category3 */
:root{
  --ink-900:#16112F;
  --ink-700:#241C4A;
  --ink-500:#3A2E6E;
  --gold-500:#C9A46A;
  --gold-300:#E4CFA3;
  --nebula:#7A5BC2;
  --bg:#F7F6F3;
  --surface:#FFFFFF;
  --line:#E7E4DE;
  --text:#1E1B2A;
  --text-2:#565064;
  --text-3:#8B8698;
  --danger:#C0563F;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(36,28,74,.06),0 12px 32px -18px rgba(36,28,74,.18);
  --shadow-hover:0 2px 4px rgba(36,28,74,.08),0 20px 40px -20px rgba(36,28,74,.26);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html,body{margin:0;padding:0}
html body{
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16.5px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{
  font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  color:var(--ink-900);
  margin:0;
  font-weight:600;
  letter-spacing:-.01em;
  line-height:1.28;
}
p{margin:0}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
time{font-variant-numeric:tabular-nums}
.no-scroll{overflow:hidden}

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

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(36,28,74,.07)}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:28px;height:28px;flex-shrink:0}
.brand-name{
  font-size:16px;
  font-weight:600;
  color:var(--ink-900);
  letter-spacing:.02em;
  white-space:nowrap;
}
.nav-main{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:30px;
  flex:1;
  min-width:0;
}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  padding:6px 2px;
  white-space:nowrap;
  transition:color .25s var(--ease);
}
.nav-link:hover{color:var(--ink-700)}
.nav-link:focus-visible{outline:2px solid var(--nebula);outline-offset:3px;border-radius:4px}
.nav-link.is-active{color:var(--ink-700);font-weight:600}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-6px;
  height:2px;
  background:var(--gold-500);
  border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}
.search-box{
  display:flex;
  align-items:center;
  gap:8px;
  height:40px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--bg);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),background .25s;
}
.search-box:focus-within{border-color:var(--gold-500);background:var(--surface);box-shadow:0 0 0 3px rgba(201,164,106,.22)}
.search-box svg{width:16px;height:16px;flex-shrink:0;stroke:var(--text-3)}
.search-box input{
  border:0;background:transparent;outline:none;
  width:148px;font-size:14px;color:var(--text);
}
.search-box input::placeholder{color:var(--text-3)}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  align-items:center;
  justify-content:center;
  transition:border-color .25s,background .25s;
}
.nav-toggle:hover{border-color:var(--gold-500);background:var(--bg)}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink-700);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink-700);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.drawer-mask{
  position:fixed;inset:0;background:rgba(22,17,47,.38);
  opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s;z-index:55;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;
  width:min(330px,86vw);
  background:var(--surface);
  z-index:60;
  transform:translateX(102%);
  transition:transform .34s var(--ease);
  display:flex;flex-direction:column;
  padding:22px 22px 28px;
  overflow-y:auto;
  box-shadow:-12px 0 40px -24px rgba(36,28,74,.4);
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-close{
  width:38px;height:38px;border:1px solid var(--line);border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--text-2);
  transition:border-color .25s,color .25s;
}
.drawer-close:hover{border-color:var(--gold-500);color:var(--ink-700)}
.drawer-nav a{
  display:block;line-height:52px;font-size:16px;color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--ink-700);font-weight:600}
.drawer-foot{margin-top:22px;display:flex;flex-direction:column;gap:12px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:500;line-height:1;
  border-radius:999px;padding:12px 26px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),background .25s,border-color .25s,color .25s;
}
.btn:focus-visible{outline:2px solid var(--nebula);outline-offset:2px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.btn-primary{background:var(--ink-700);color:#fff;box-shadow:0 1px 2px rgba(36,28,74,.12)}
.btn-primary:hover{transform:translateY(-2px);border-color:var(--gold-500);box-shadow:0 2px 6px rgba(36,28,74,.16),0 18px 36px -20px rgba(36,28,74,.5);color:#fff}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-700)}
.btn-ghost:hover{background:var(--surface);border-color:var(--gold-500);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-gold{background:var(--gold-500);color:var(--ink-900)}
.btn-gold:hover{transform:translateY(-2px);background:var(--gold-300);box-shadow:var(--shadow-hover)}
.btn-sm{padding:10px 20px;font-size:14px}

/* ---------- 页面横幅 ---------- */
.page-banner{
  position:relative;
  color:#fff;
  padding:84px 0 72px;
  background-image:
    linear-gradient(180deg,rgba(22,17,47,.88),rgba(36,28,74,.78)),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-banner::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(201,164,106,0),rgba(201,164,106,.75),rgba(201,164,106,0));
}
.banner-inner{position:relative;z-index:2;max-width:820px}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:rgba(255,255,255,.62);margin-bottom:20px;
}
.breadcrumb a{transition:color .25s}
.breadcrumb a:hover{color:var(--gold-300)}
.breadcrumb .sep{color:rgba(255,255,255,.34)}
.breadcrumb .current{color:var(--gold-300)}
.page-banner h1{
  color:#fff;
  font-size:clamp(28px,3.8vw,42px);
  line-height:1.22;
  letter-spacing:-.015em;
}
.banner-lead{
  margin-top:18px;
  font-size:17px;
  line-height:1.85;
  color:rgba(255,255,255,.84);
  max-width:640px;
}
.banner-rule{width:56px;height:1px;background:var(--gold-500);margin-top:30px}

/* ---------- 概览数据条 ---------- */
.metrics-wrap{margin-top:-34px;position:relative;z-index:3}
.metrics{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.metric{
  padding:26px 28px;
  border-right:1px solid var(--line);
}
.metric:last-child{border-right:0}
.metric-num{
  font-family:"Noto Serif SC","Source Han Serif SC",Georgia,serif;
  font-size:30px;
  line-height:1.1;
  color:var(--ink-700);
  font-variant-numeric:tabular-nums;
  letter-spacing:.01em;
}
.metric-num small{font-size:14px;color:var(--text-3);margin-left:6px;font-family:inherit}
.metric-label{font-size:14px;color:var(--text-2);margin-top:8px}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section--tight{padding:76px 0}
.section--alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,2.6vw,32px)}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16.5px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--ink-500);
  padding:6px 14px;border-radius:999px;
  background:rgba(122,91,194,.10);
  margin-bottom:16px;
}
.eyebrow::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--gold-500);
}

/* ---------- 卡片矩阵 ---------- */
.card-matrix{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.m-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  box-shadow:0 1px 2px rgba(36,28,74,.04);
  transition:transform .32s var(--ease),box-shadow .32s var(--ease),border-color .3s;
}
.m-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(201,164,106,.6)}
.m-card-media{aspect-ratio:16/9;overflow:hidden;background:var(--bg)}
.m-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.m-card:hover .m-card-media img{transform:scale(1.04)}
.m-card-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1}
.m-card-title{font-size:19px;transition:color .3s var(--ease)}
.m-card:hover .m-card-title{color:var(--gold-500)}
.m-card-text{font-size:15px;line-height:1.78;color:var(--text-2)}
.m-card-link{
  margin-top:auto;padding-top:12px;font-size:14px;color:var(--ink-700);
  align-self:flex-start;border-bottom:1px solid var(--gold-300);padding-bottom:2px;
  transition:color .25s,border-color .25s;
}
.m-card-link:hover{color:var(--gold-500);border-color:var(--gold-500)}
.m-card--wide{grid-column:span 2}
.m-card--accent{
  background:var(--ink-700);
  border-color:rgba(228,207,163,.24);
  position:relative;
}
.m-card--accent::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(circle at 18% 22%, rgba(228,207,163,.4) 0.7px, transparent 1.6px),
    radial-gradient(circle at 68% 12%, rgba(228,207,163,.32) 0.6px, transparent 1.5px),
    radial-gradient(circle at 42% 72%, rgba(228,207,163,.26) 0.6px, transparent 1.5px),
    radial-gradient(circle at 86% 58%, rgba(228,207,163,.3) 0.7px, transparent 1.6px);
  background-size:180px 180px;
}
.m-card--accent:hover{border-color:var(--gold-500)}
.m-card--accent .m-card-body{position:relative;z-index:2}
.m-card--accent .m-card-title{color:#fff}
.m-card--accent:hover .m-card-title{color:var(--gold-300)}
.m-card--accent .m-card-text{color:rgba(255,255,255,.76)}
.m-card--accent .m-card-link{color:var(--gold-300);border-color:rgba(228,207,163,.5)}
.m-card--accent .m-card-link:hover{color:#fff;border-color:#fff}

/* ---------- 步骤 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:34px;
}
.step{
  position:relative;
  padding-top:28px;
  border-top:1px solid var(--line);
}
.step::before{
  content:"";position:absolute;top:-1px;left:0;width:40px;height:2px;background:var(--gold-500);
}
.step-num{
  font-family:"Noto Serif SC","Source Han Serif SC",Georgia,serif;
  font-size:38px;line-height:1;color:var(--gold-500);
  font-variant-numeric:tabular-nums;
}
.step h3{margin-top:14px;font-size:19px}
.step p{margin-top:10px;font-size:15px;color:var(--text-2);line-height:1.8}

/* ---------- 分栏 ---------- */
.split{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:52px;
  align-items:start;
}
.split--reverse{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
.split--reverse .split-main{order:2}
.path-list{border-top:1px solid var(--line)}
.path-item{
  display:flex;gap:18px;
  padding:24px 0;
  border-bottom:1px solid var(--line);
  transition:background .3s var(--ease);
}
.path-item:hover{background:rgba(255,255,255,.7)}
.path-dot{
  flex-shrink:0;width:10px;height:10px;border-radius:50%;
  border:1.5px solid var(--gold-500);margin-top:11px;
  transition:background .3s;
}
.path-item:hover .path-dot{background:var(--gold-500)}
.path-item h3{font-size:18px}
.path-item p{margin-top:8px;font-size:15px;color:var(--text-2);line-height:1.8}

.aside-card{
  position:sticky;
  top:96px;
  background:var(--ink-700);
  border:1px solid rgba(228,207,163,.22);
  border-radius:var(--radius-lg);
  padding:30px;
  color:#fff;
  box-shadow:var(--shadow);
}
.aside-card h3{color:#fff;font-size:20px}
.aside-card .aside-sub{margin-top:12px;font-size:14.5px;color:rgba(255,255,255,.74);line-height:1.8}
.aside-list{margin:22px 0 26px;display:flex;flex-direction:column;gap:14px}
.aside-list li{
  position:relative;padding-left:20px;
  font-size:14.5px;color:rgba(255,255,255,.84);line-height:1.7;
}
.aside-list li::before{
  content:"";position:absolute;left:0;top:9px;width:9px;height:1px;background:var(--gold-500);
}
.aside-card .btn{width:100%}

/* ---------- FAQ ---------- */
.faq-grid{
  display:grid;
  grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:56px;
  align-items:start;
}
.faq-intro h2{font-size:clamp(24px,2.6vw,32px)}
.faq-intro p{margin-top:16px;color:var(--text-2);font-size:16px}
.faq-contact{
  margin-top:28px;padding:22px 24px;
  background:var(--surface);
  border:1px solid var(--line);
  border-left:3px solid var(--gold-500);
  border-radius:var(--radius-md);
}
.faq-contact p{font-size:14.5px;color:var(--text-2);line-height:1.8}
.faq-contact a{
  display:inline-block;margin-top:12px;font-size:14px;color:var(--ink-700);
  border-bottom:1px solid var(--gold-300);padding-bottom:2px;
  transition:color .25s,border-color .25s;
}
.faq-contact a:hover{color:var(--gold-500);border-color:var(--gold-500)}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:22px 0;
  text-align:left;
  font-family:"Noto Serif SC","Source Han Serif SC",Georgia,serif;
  font-size:17px;font-weight:600;color:var(--ink-900);
  transition:color .25s var(--ease);
}
.faq-q:hover{color:var(--ink-500)}
.faq-q:focus-visible{outline:2px solid var(--nebula);outline-offset:2px;border-radius:4px}
.faq-item.is-open .faq-q{color:var(--ink-700)}
.faq-icon{
  flex-shrink:0;position:relative;width:20px;height:20px;margin-top:4px;
  transition:transform .3s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--gold-500);border-radius:2px;
}
.faq-icon::before{left:0;top:9px;width:20px;height:1.5px}
.faq-icon::after{left:9px;top:0;width:1.5px;height:20px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .32s var(--ease);
}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a p{
  padding:0 0 24px;
  font-size:15px;line-height:1.85;color:var(--text-2);
  max-width:640px;
}

/* ---------- 底部转化条 ---------- */
.cta-band{
  position:relative;
  background:var(--ink-700);
  color:#fff;
  padding:84px 0;
  text-align:center;
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(circle at 12% 26%, rgba(228,207,163,.42) 0.8px, transparent 1.8px),
    radial-gradient(circle at 34% 68%, rgba(228,207,163,.28) 0.7px, transparent 1.6px),
    radial-gradient(circle at 58% 18%, rgba(228,207,163,.34) 0.7px, transparent 1.6px),
    radial-gradient(circle at 78% 62%, rgba(228,207,163,.3) 0.8px, transparent 1.8px),
    radial-gradient(circle at 92% 34%, rgba(228,207,163,.24) 0.6px, transparent 1.5px);
  background-size:220px 220px;
  opacity:.9;
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;max-width:720px;margin:0 auto}
.cta-band h2{color:#fff;font-size:clamp(24px,2.8vw,34px)}
.cta-band p{margin-top:16px;font-size:16.5px;color:rgba(255,255,255,.78)}
.cta-actions{
  margin-top:32px;display:flex;flex-wrap:wrap;gap:14px;justify-content:center;
}
.cta-band .btn-ghost{border-color:rgba(228,207,163,.5);color:#fff}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.08);border-color:var(--gold-300)}
.cta-sub{
  margin-top:26px;display:flex;flex-wrap:wrap;gap:22px;justify-content:center;
  font-size:14px;
}
.cta-sub a{color:rgba(255,255,255,.7);border-bottom:1px solid rgba(228,207,163,.4);padding-bottom:2px;transition:color .25s,border-color .25s}
.cta-sub a:hover{color:var(--gold-300);border-color:var(--gold-300)}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);
  color:rgba(255,255,255,.72);
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.3fr;
  gap:44px;
  padding-bottom:52px;
}
.footer-brand .brand{margin-bottom:18px}
.footer-brand .brand-name{color:#fff}
.footer-about{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:300px}
.footer-col h3{
  font-size:15px;color:#fff;margin-bottom:18px;
  font-family:"Noto Sans SC","PingFang SC",sans-serif;font-weight:600;letter-spacing:.02em;
}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.66);transition:color .25s}
.footer-links a:hover{color:var(--gold-300)}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:14px;line-height:1.75;color:rgba(255,255,255,.62)}
.footer-contact strong{color:rgba(255,255,255,.86);font-weight:500}
.footer-bottom{
  border-top:1px solid rgba(228,207,163,.16);
  padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px 24px;
  justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.42);
}

/* ---------- 进入动画 ---------- */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.js .reveal.is-visible{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-main,.header-actions .search-box{display:none}
  .nav-toggle{display:flex}
  .section{padding:74px 0}
  .section--tight{padding:60px 0}
  .card-matrix{grid-template-columns:repeat(2,minmax(0,1fr))}
  .m-card--wide{grid-column:span 2}
  .split,.split--reverse{grid-template-columns:1fr;gap:36px}
  .split--reverse .split-main{order:0}
  .aside-card{position:static}
  .faq-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2){border-right:0}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line)}
  .steps{grid-template-columns:1fr;gap:26px}
}
@media (max-width:767px){
  html body{font-size:16px}
  .container{padding:0 20px}
  .header-inner{height:62px}
  .page-banner{padding:60px 0 56px}
  .banner-lead{font-size:15.5px}
  .metrics-wrap{margin-top:-22px}
  .card-matrix{grid-template-columns:1fr}
  .m-card--wide{grid-column:span 1}
  .m-card-body{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-about{max-width:none}
  .cta-band{padding:64px 0}
  .cta-actions{flex-direction:column;align-items:stretch}
  .cta-actions .btn{width:100%}
}
@media (max-width:520px){
  .metrics{grid-template-columns:1fr}
  .metric{border-right:0;border-bottom:1px solid var(--line)}
  .metric:last-child{border-bottom:0}
  .section{padding:60px 0}
  .section-head{margin-bottom:32px}
  .btn{padding:12px 22px;font-size:14.5px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none}
}