/* roulang page: index */
:root{
  --ink-950:#0B0C0E;
  --ink-800:#1C1E22;
  --ink-600:#4A4E55;
  --ink-400:#868B93;
  --paper:#F5F3EF;
  --surface:#FFFFFF;
  --line:#E4E0D9;
  --accent:#FF5A2E;
  --accent-deep:#E0431A;
  --accent-soft:#FFE7DE;
  --sub:#1F6F5C;
  --l1:#6E747C;--l2:#A9714B;--l3:#9BA3AC;--l4:#C2A24E;
  --r-card:4px;--r-img:2px;--r-pill:999px;--r-btn:2px;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1240px;
  --pad:clamp(20px,5vw,48px);
  --section:clamp(64px,9vw,128px);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink-600);
  font-family:var(--sans);font-size:17px;line-height:1.9;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4,h5{font-family:var(--serif);color:var(--ink-800);font-weight:700;line-height:1.2;margin:0;letter-spacing:-.01em}
h1{font-size:clamp(2.2rem,5vw,4rem);line-height:1.15;letter-spacing:-.01em}
h2{font-size:clamp(1.5rem,3vw,2.25rem)}
h3{font-size:20px}
::selection{background:var(--accent-soft);color:var(--ink-950)}
:focus{outline:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.wrap{max-width:var(--container);margin:0 auto;padding:0 var(--pad);width:100%}
.section{padding:var(--section) 0}
.section-tight{padding:clamp(48px,6vw,84px) 0}
.mono{font-family:var(--mono)}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(245,243,239,.92);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:32px;height:82px}
.logo{font-family:var(--serif);font-size:19px;font-weight:700;color:var(--ink-950);letter-spacing:-.01em;white-space:nowrap;display:inline-flex;align-items:center;gap:9px}
.logo-dot{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block;flex:0 0 auto}
.main-nav{display:flex;align-items:center;gap:30px;margin-left:auto}
.nav-link{position:relative;font-size:15px;color:var(--ink-600);padding:7px 0;transition:color .24s var(--ease);white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent);transition:width .28s var(--ease)}
.nav-link:hover{color:var(--ink-800)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--ink-950);font-weight:600}
.nav-link.is-active::after{width:100%}
.nav-cta{margin-left:6px;padding:11px 22px;font-size:14px}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border:1px solid var(--line);
  background:var(--surface);border-radius:var(--r-btn);position:relative;cursor:pointer;padding:0;
}
.nav-toggle span{position:absolute;left:12px;right:12px;height:1px;background:var(--ink-800);transition:transform .3s var(--ease),opacity .3s var(--ease)}
.nav-toggle span:nth-child(1){top:19px}
.nav-toggle span:nth-child(2){top:25px}
.nav-toggle.is-open span:nth-child(1){transform:translateY(3px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){transform:translateY(-3px) rotate(-45deg)}

/* ---------- Drawer ---------- */
.drawer-overlay{position:fixed;inset:0;background:rgba(11,12,14,.45);opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s;z-index:70}
.drawer-overlay.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:85%;max-width:360px;background:var(--surface);
  border-left:1px solid var(--line);transform:translateX(101%);transition:transform .36s var(--ease);
  z-index:80;padding:96px var(--pad) 40px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer h4{font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--ink-400);margin-bottom:14px;font-weight:600}
.drawer a.drawer-link{display:block;font-family:var(--serif);font-size:21px;font-weight:600;color:var(--ink-800);padding:16px 0;border-bottom:1px solid var(--line)}
.drawer a.drawer-link.is-active{color:var(--accent)}
.drawer .btn{margin-top:26px;width:100%;justify-content:center}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 28px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;line-height:1.2;text-align:center;
  transition:background-color .26s var(--ease),color .26s var(--ease),border-color .26s var(--ease),transform .26s var(--ease);
}
.btn i{font-size:13px}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-deep);color:#fff}
.btn-primary .arrow{transition:transform .26s var(--ease)}
.btn-primary:hover .arrow{transform:translateX(4px)}
.btn-ghost{background:transparent;border-color:var(--ink-800);color:var(--ink-800)}
.btn-ghost:hover{background:var(--ink-950);border-color:var(--ink-950);color:#fff}
.btn-text{background:none;border:none;padding:5px 0;color:var(--ink-800);font-weight:600;position:relative;font-size:15px;cursor:pointer;display:inline-flex;align-items:center;gap:7px}
.btn-text::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;background:currentColor;opacity:.45;transition:height .24s var(--ease),background .24s var(--ease),opacity .24s var(--ease)}
.btn-text:hover::after{height:2px;background:var(--accent);opacity:1}
.btn-text:hover{color:var(--ink-950)}

/* ---------- Hero ---------- */
.hero{padding:clamp(44px,7vw,92px) 0 clamp(52px,7vw,100px)}
.hero-grid{align-items:flex-start}
.hero-grid > .cell{padding-left:0;padding-right:0}
.hero-copy{padding-right:clamp(0px,3vw,40px)}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-size:12px;
  letter-spacing:.16em;color:var(--ink-400);margin-bottom:22px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);display:inline-block}
.hero h1{margin-bottom:22px}
.hero h1 .kw{white-space:nowrap}
.hero-sub{font-size:clamp(16px,1.4vw,18px);line-height:1.85;color:var(--ink-600);max-width:560px;margin-bottom:34px}
.hero-actions{display:flex;align-items:center;gap:26px;flex-wrap:wrap;margin-bottom:44px}
.hero-stats{display:flex;gap:0;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:24px}
.hero-stat{padding-right:28px;margin-right:28px;border-right:1px solid var(--line)}
.hero-stat:last-child{border-right:none;margin-right:0;padding-right:0}
.hero-stat b{display:block;font-family:var(--mono);font-size:22px;font-weight:600;color:var(--ink-800);line-height:1.2}
.hero-stat span{font-size:13px;color:var(--ink-400)}
.hero-visual{position:relative}
.hero-figure{margin:0;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--surface);position:relative}
.hero-figure img{width:100%;aspect-ratio:4/5;object-fit:cover}
.hero-float{
  position:absolute;left:-18px;bottom:36px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:16px 20px;box-shadow:0 12px 32px rgba(11,12,14,.08);max-width:250px;
}
.hero-float b{display:block;font-family:var(--serif);font-size:15px;color:var(--ink-800);margin-bottom:4px}
.hero-float span{font-size:13px;color:var(--ink-400);line-height:1.7;display:block}

/* ---------- Trust band ---------- */
.trust{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line)}
.trust-item{background:var(--paper);padding:clamp(24px,3vw,38px) clamp(18px,2vw,30px)}
.trust-num{font-family:var(--mono);font-size:clamp(1.55rem,2.6vw,2rem);font-weight:600;color:var(--ink-800);line-height:1}
.trust-num small{font-size:.5em;font-weight:600;margin-left:2px;color:var(--ink-600)}
.trust-name{font-size:13px;color:var(--ink-400);margin-top:12px;line-height:1.7}

/* ---------- Section head ---------- */
.sec-head{max-width:760px;margin-bottom:clamp(36px,4vw,56px)}
.sec-label{display:block;font-family:var(--mono);font-size:12px;letter-spacing:.18em;color:var(--ink-400);margin-bottom:14px}
.sec-title{font-size:clamp(1.5rem,3vw,2.25rem)}
.sec-desc{margin-top:16px;font-size:16px;color:var(--ink-600);max-width:660px}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head--center .sec-desc{margin-left:auto;margin-right:auto}

/* ---------- Compare table ---------- */
.table-scroll{
  overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);
  border-radius:var(--r-card);background:var(--surface);
}
.compare-table{width:100%;min-width:760px;border-collapse:collapse;font-size:14px}
.compare-table th,.compare-table td{
  padding:16px 18px;text-align:center;border-bottom:1px solid var(--line);
  border-right:1px solid var(--line);vertical-align:middle;
}
.compare-table tr > *:last-child{border-right:none}
.compare-table tbody tr:last-child td{border-bottom:none}
.compare-table thead th{
  position:sticky;top:0;z-index:3;background:var(--surface);
  font-family:var(--sans);font-size:13px;font-weight:600;color:var(--ink-800);letter-spacing:.04em;
  padding-top:20px;padding-bottom:20px;
}
.compare-table thead th:first-child{position:sticky;left:0;z-index:5;text-align:left;color:var(--ink-400);font-weight:500}
.compare-table td:first-child{
  position:sticky;left:0;z-index:2;background:var(--surface);text-align:left;
  color:var(--ink-800);font-weight:500;min-width:180px;
}
.compare-table thead th:nth-child(3),
.compare-table td:nth-child(3){border-left:1px solid var(--accent);border-right:1px solid var(--accent)}
.compare-table tbody tr:hover td{background:#FBF9F7}
.compare-table tbody tr:hover td:first-child{background:#FBF9F7}
.compare-table .group-row td{
  background:#FAF8F5;text-align:left;font-family:var(--mono);font-size:12px;letter-spacing:.16em;
  color:var(--ink-400);padding:12px 18px;
}
.compare-table .group-row:hover td{background:#FAF8F5}
.rec-tag{
  display:inline-block;background:var(--accent-soft);color:var(--accent-deep);
  font-size:11px;padding:3px 10px;border-radius:var(--r-pill);margin-left:8px;
  font-weight:600;letter-spacing:.04em;vertical-align:middle;
}
.state-yes{color:var(--sub);font-weight:700;font-size:15px}
.state-no{color:#C4C0B8}
.state-val{font-family:var(--mono);font-size:13px;color:var(--ink-800)}
.table-note{margin-top:16px;font-size:13px;color:var(--ink-400)}

/* ---------- Level cards ---------- */
.level-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;align-items:end}
.level-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:34px 24px 26px;overflow:hidden;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
  display:flex;flex-direction:column;
}
.level-card:hover{transform:translateY(-2px);border-color:#CFC9BF;box-shadow:0 12px 32px rgba(11,12,14,.08)}
.level-num{
  position:absolute;top:14px;right:16px;font-family:var(--serif);font-size:58px;font-weight:700;
  color:#EFEBE4;line-height:1;pointer-events:none;user-select:none;
}
.level-head{display:flex;align-items:center;gap:9px;margin-bottom:8px;position:relative;z-index:1}
.level-dot{width:9px;height:9px;border-radius:50%;flex:0 0 auto}
.level-name{font-family:var(--serif);font-size:18px;font-weight:700;color:var(--ink-800)}
.level-tier{font-family:var(--mono);font-size:12px;color:var(--ink-400);margin-bottom:20px;position:relative;z-index:1}
.level-list{position:relative;z-index:1;flex:1 1 auto}
.level-list li{font-size:14px;line-height:1.8;color:var(--ink-600);padding-left:16px;position:relative;margin-bottom:9px}
.level-list li::before{content:"";position:absolute;left:0;top:11px;width:5px;height:1px;background:var(--ink-400)}
.level-up{margin-top:18px;position:relative;z-index:1}

/* ---------- Content preview cards ---------- */
.content-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.content-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.content-card:hover{transform:translateY(-2px);border-color:#CFC9BF;box-shadow:0 12px 32px rgba(11,12,14,.08)}
.content-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:#EDEAE4}
.content-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.content-card:hover .content-thumb img{transform:scale(1.03)}
.content-card.is-locked .content-thumb img{filter:grayscale(1);opacity:.7}
.lock-badge{
  position:absolute;top:12px;right:12px;background:rgba(11,12,14,.72);color:#fff;
  font-size:11px;padding:4px 10px;border-radius:var(--r-pill);display:inline-flex;align-items:center;gap:5px;
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
}
.content-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.tag{
  display:inline-block;font-size:12px;padding:3px 10px;border-radius:var(--r-pill);
  background:var(--accent-soft);color:var(--accent-deep);margin-bottom:12px;align-self:flex-start;
}
.tag--sub{background:#E4F1ED;color:var(--sub)}
.content-title{font-family:var(--serif);font-size:17px;font-weight:700;color:var(--ink-800);line-height:1.5;margin-bottom:10px}
.content-desc{font-size:14px;line-height:1.8;color:var(--ink-400);margin-bottom:16px;flex:1 1 auto}
.content-foot{display:flex;align-items:center;justify-content:space-between;padding-top:14px;border-top:1px solid var(--line)}
.badge-lv{font-size:12px;font-family:var(--mono);color:var(--ink-600);display:inline-flex;align-items:center;gap:6px}
.badge-lv .level-dot{width:7px;height:7px}
.content-foot .go{font-size:13px;color:var(--accent);font-weight:600}

/* ---------- News list ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.news-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px 22px;display:flex;flex-direction:column;position:relative;overflow:hidden;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.news-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .34s var(--ease)}
.news-card:hover{transform:translateY(-2px);border-color:#CFC9BF;box-shadow:0 12px 32px rgba(11,12,14,.08)}
.news-card:hover::before{transform:scaleX(1)}
.news-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.news-cat{font-size:12px;padding:3px 10px;border-radius:var(--r-pill);background:#E4F1ED;color:var(--sub);white-space:nowrap}
.news-time{font-family:var(--mono);font-size:12px;color:var(--ink-400);white-space:nowrap}
.news-title{
  font-family:var(--serif);font-size:18px;font-weight:700;color:var(--ink-800);line-height:1.55;
  margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-summary{
  font-size:14px;line-height:1.8;color:var(--ink-400);margin-bottom:20px;flex:1 1 auto;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-more{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--accent);font-weight:600;padding-top:16px;border-top:1px solid var(--line)}
.news-more i{transition:transform .26s var(--ease)}
.news-card:hover .news-more i{transform:translateX(4px)}
.news-foot{margin-top:38px;display:flex;justify-content:center}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-card);background:var(--surface);
  padding:64px 24px;text-align:center;color:var(--ink-400);font-size:15px;
}
.empty-state i{display:block;font-size:26px;color:#CFC9BF;margin-bottom:16px}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;text-align:left;cursor:pointer;position:relative;
  padding:24px 52px 24px 0;font-family:var(--serif);font-size:17px;font-weight:700;
  color:var(--ink-800);line-height:1.6;transition:color .24s var(--ease);
}
.faq-q:hover{color:var(--accent)}
.faq-sign{position:absolute;right:6px;top:50%;transform:translateY(-50%);width:16px;height:16px}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:var(--ink-600);transition:transform .3s var(--ease),opacity .3s var(--ease),background .3s var(--ease)}
.faq-sign::before{left:0;top:7.5px;width:16px;height:1.5px}
.faq-sign::after{left:7.5px;top:0;width:1.5px;height:16px}
.faq-item.is-open .faq-sign::after{transform:rotate(90deg);opacity:0}
.faq-item.is-open .faq-sign::before{background:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .36s var(--ease)}
.faq-a-inner{padding:0 52px 26px 0;max-width:720px;font-size:16px;line-height:1.9;color:var(--ink-600)}

/* ---------- CTA band ---------- */
.cta-band{position:relative;background:var(--ink-950);overflow:hidden;padding:clamp(56px,8vw,104px) 0}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  opacity:.16;
}
.cta-band::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,12,14,.5) 0%,rgba(11,12,14,.86) 100%)}
.cta-inner{position:relative;z-index:2;max-width:760px}
.cta-band .sec-label{color:rgba(255,255,255,.5)}
.cta-band h2{color:#fff;margin-bottom:18px}
.cta-band p.lead{color:rgba(255,255,255,.72);font-size:16px;line-height:1.9;margin-bottom:34px;max-width:600px}
.cta-form{display:flex;max-width:540px;margin-bottom:16px}
.cta-form input{
  flex:1 1 auto;min-width:0;padding:16px 18px;border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.06);color:#fff;border-radius:var(--r-btn) 0 0 var(--r-btn);
  transition:border-color .26s var(--ease),background .26s var(--ease);font-size:15px;
}
.cta-form input::placeholder{color:rgba(255,255,255,.42)}
.cta-form input:focus{border-color:var(--accent);background:rgba(255,255,255,.1)}
.cta-form button{border-radius:0 var(--r-btn) var(--r-btn) 0;padding:16px 30px;white-space:nowrap}
.cta-note{font-size:13px;color:rgba(255,255,255,.42);line-height:1.8}
.cta-error{font-size:13px;color:var(--accent);margin-top:10px;min-height:20px}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink-950);color:var(--ink-400);font-size:14px;padding-top:clamp(56px,7vw,88px)}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr}
.footer-col{padding:0 clamp(18px,2.4vw,32px);border-left:1px solid rgba(255,255,255,.1)}
.footer-col:first-child{border-left:none;padding-left:0}
.footer-col:last-child{padding-right:0}
.footer-brand{font-family:var(--serif);font-size:19px;font-weight:700;color:#fff;margin-bottom:16px;display:flex;align-items:center;gap:9px}
.footer-brand .logo-dot{background:var(--accent)}
.footer-col p{font-size:14px;line-height:1.9;color:var(--ink-400);max-width:300px}
.footer-col h4{font-family:var(--sans);font-size:13px;font-weight:600;letter-spacing:.14em;color:#fff;margin-bottom:20px}
.footer-col a{display:block;padding:7px 0;font-size:14px;color:var(--ink-400);transition:color .22s var(--ease),padding-left .22s var(--ease)}
.footer-col a:hover{color:#fff;padding-left:3px}
.footer-col li span{display:block;padding:7px 0;font-size:14px;color:var(--ink-400)}
.footer-copy{
  margin-top:clamp(44px,5vw,68px);border-top:1px solid rgba(255,255,255,.1);
  padding:24px 0;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.4);
}
.footer-copy .mono{font-size:12px}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .main-nav{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:block}
  .hero-copy{padding-right:0}
  .hero-visual{margin-top:48px}
  .hero-float{left:auto;right:14px;bottom:14px}
  .level-grid{grid-template-columns:repeat(2,1fr);align-items:stretch}
  .content-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;row-gap:44px}
  .footer-col{border-left:none;padding:0}
}
@media (max-width:639px){
  body{font-size:16px}
  h1{font-size:clamp(2rem,8vw,2.6rem)}
  .header-inner{height:70px}
  .logo{font-size:17px}
  .hero-stats{gap:20px 0}
  .hero-stat{padding-right:20px;margin-right:20px}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .level-grid{grid-template-columns:1fr}
  .content-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cta-form{flex-direction:column}
  .cta-form input{border-radius:var(--r-btn);margin-bottom:10px}
  .cta-form button{border-radius:var(--r-btn);width:100%}
  .faq-a-inner{padding-right:0}
  .compare-table{min-width:660px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink-950:#0B0C0E;
  --ink-800:#1C1E22;
  --ink-600:#4A4E55;
  --ink-400:#868B93;
  --paper:#F5F3EF;
  --surface:#FFFFFF;
  --line:#E4E0D9;
  --accent:#FF5A2E;
  --accent-deep:#E0431A;
  --accent-soft:#FFE7DE;
  --sub:#1F6F5C;
  --lv1:#6E747C; --lv2:#A9714B; --lv3:#9BA3AC; --lv4:#C2A24E;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --radius-card:4px;
  --radius-img:2px;
  --radius-pill:999px;
  --shadow-hover:0 12px 32px rgba(11,12,14,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1240px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-600);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--ink-800);text-decoration:none;transition:color .24s var(--ease);}
a:hover{color:var(--accent);}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--ink-800);margin:0;font-weight:700;letter-spacing:-.01em;}
h1{font-size:clamp(2.2rem,5vw,4rem);line-height:1.15;}
h2{font-size:clamp(1.5rem,3vw,2.25rem);line-height:1.3;}
h3{font-size:20px;line-height:1.45;}
p{margin:0 0 1.1em;}
ul,ol{margin:0 0 1.2em;padding-left:1.3em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
::selection{background:var(--accent-soft);color:var(--ink-950);}

.wrap{max-width:var(--container);margin:0 auto;padding:0 clamp(20px,5vw,48px);}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:500;line-height:1;
  padding:14px 28px;border-radius:2px;border:1px solid transparent;
  cursor:pointer;transition:all .28s var(--ease);white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent);}
.btn-primary:hover{background:var(--accent-deep);border-color:var(--accent-deep);color:#fff;}
.btn-primary .arrow{transition:transform .28s var(--ease);}
.btn-primary:hover .arrow{transform:translateX(4px);}
.btn-ghost{background:transparent;color:var(--ink-800);border:1px solid var(--ink-800);}
.btn-ghost:hover{background:var(--ink-950);color:#fff;border-color:var(--ink-950);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;padding:2px 0;color:var(--ink-800);
  font-size:15px;position:relative;
}
.btn-text::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;
  background:var(--ink-400);transition:height .28s var(--ease),background .28s var(--ease);
}
.btn-text:hover::after{height:2px;background:var(--accent);}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(245,243,239,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:32px;min-height:82px;}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-serif);font-weight:700;font-size:19px;
  color:var(--ink-950);letter-spacing:-.01em;white-space:nowrap;
}
.logo-dot{
  width:9px;height:9px;border-radius:50%;background:var(--accent);
  display:inline-block;flex:0 0 auto;margin-top:2px;
}
.main-nav{display:flex;align-items:center;gap:30px;margin-left:auto;}
.nav-link{
  position:relative;font-size:15px;color:var(--ink-600);padding:8px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--accent);transition:width .3s var(--ease);
}
.nav-link:hover{color:var(--ink-950);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--ink-950);}
.nav-link.is-active::after{width:100%;}
.nav-cta{margin-left:8px;padding:12px 22px;font-size:14px;}
.nav-toggle{
  display:none;background:transparent;border:0;padding:10px;margin-left:auto;cursor:pointer;
}
.nav-toggle span{display:block;width:24px;height:1px;background:var(--ink-800);margin:6px 0;transition:transform .3s var(--ease);}
.nav-drawer{
  position:fixed;top:0;right:0;height:100%;width:85%;max-width:360px;
  background:var(--paper);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .34s var(--ease);
  z-index:120;padding:96px 32px 40px;display:flex;flex-direction:column;gap:22px;
}
.nav-drawer.is-open{transform:translateX(0);}
.nav-drawer a{font-family:var(--font-serif);font-size:22px;color:var(--ink-800);}
.nav-drawer a:hover{color:var(--accent);}
.nav-drawer .btn{margin-top:12px;justify-content:center;font-family:var(--font-sans);font-size:15px;}
.nav-mask{
  position:fixed;inset:0;background:rgba(11,12,14,.42);
  opacity:0;pointer-events:none;transition:opacity .34s var(--ease);z-index:110;
}
.nav-mask.is-open{opacity:1;pointer-events:auto;}

/* ---------- Breadcrumb ---------- */
.crumb{padding:26px 0 0;font-size:12px;color:var(--ink-400);display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb a{color:var(--ink-400);font-size:12px;}
.crumb a:hover{color:var(--accent);}
.crumb .sep{color:var(--line);}
.crumb .current{color:var(--ink-600);}

/* ---------- Article head ---------- */
.article-head{padding:26px 0 clamp(28px,4vw,44px);border-bottom:1px solid var(--line);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--sub);
  background:rgba(31,111,92,.08);border-radius:var(--radius-pill);
  padding:5px 14px;margin-bottom:20px;font-family:var(--font-sans);
}
.article-title{max-width:960px;margin-bottom:22px;word-break:break-word;}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  font-size:13px;color:var(--ink-400);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px;}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--accent);display:inline-block;}
.article-cover{margin-top:clamp(28px,4vw,44px);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;}
.article-cover img{width:100%;aspect-ratio:16/8;object-fit:cover;border-radius:0;}

/* ---------- Article layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr);gap:56px;
  padding:clamp(40px,6vw,72px) 0 clamp(56px,7vw,88px);
}
.article-col{min-width:0;max-width:760px;}
.article-main{max-width:720px;}

/* prose */
.article-main h2{
  font-size:clamp(1.4rem,2.6vw,1.85rem);line-height:1.4;
  margin:2.1em 0 .8em;padding-top:.2em;scroll-margin-top:110px;
}
.article-main h3{font-size:20px;margin:1.7em 0 .6em;scroll-margin-top:110px;}
.article-main p{margin:0 0 1.15em;}
.article-main ul,.article-main ol{padding-left:1.4em;margin:0 0 1.3em;}
.article-main li{margin-bottom:.5em;}
.article-main strong{color:var(--ink-800);}
.article-main blockquote{
  margin:1.6em 0;padding:18px 24px;border-left:2px solid var(--accent);
  background:var(--surface);color:var(--ink-600);border-radius:0 var(--radius-card) var(--radius-card) 0;
}
.article-main blockquote p:last-child{margin-bottom:0;}
.article-main table{
  width:100%;border-collapse:collapse;font-size:14px;margin:1.6em 0;
  border:1px solid var(--line);background:var(--surface);
}
.article-main th,.article-main td{border:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top;}
.article-main th{background:#FBF9F7;color:var(--ink-800);font-weight:700;}
.article-main img{margin:1.6em 0;border:1px solid var(--line);border-radius:var(--radius-img);}
.article-main figure{margin:1.8em 0;}
.article-main figcaption{font-size:13px;color:var(--ink-400);text-align:center;margin-top:10px;line-height:1.7;}
.article-main hr{border:0;border-top:1px solid var(--line);margin:2.4em 0;}
.article-main a{color:var(--accent);border-bottom:1px solid rgba(255,90,46,.35);}
.article-main a:hover{color:var(--accent-deep);}

/* ---------- TOC ---------- */
.article-aside{display:none;}
.toc{position:sticky;top:110px;border-left:1px solid var(--line);padding-left:20px;}
.toc h4{font-family:var(--font-sans);font-size:13px;letter-spacing:.08em;color:var(--ink-400);margin-bottom:14px;font-weight:500;}
.toc a{
  display:block;font-size:14px;line-height:1.7;color:var(--ink-600);
  padding:5px 0;border-left:2px solid transparent;margin-left:-22px;padding-left:20px;
}
.toc a:hover{color:var(--ink-950);}
.toc a.is-current{color:var(--accent);border-left-color:var(--accent);}

/* ---------- Empty state ---------- */
.empty-state{
  border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);
  padding:56px 32px;text-align:center;
}
.empty-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border:1px solid var(--line);border-radius:50%;
  color:var(--ink-400);font-family:var(--font-mono);margin-bottom:18px;
}
.empty-title{font-family:var(--font-serif);font-size:20px;color:var(--ink-800);margin-bottom:8px;}
.empty-desc{font-size:15px;color:var(--ink-400);margin-bottom:24px;}

/* ---------- Tags ---------- */
.article-foot{margin-top:56px;padding-top:28px;border-top:1px solid var(--line);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:36px;}
.tag-row .label{font-size:13px;color:var(--ink-400);margin-right:4px;}
.tag{
  display:inline-block;font-size:13px;padding:6px 14px;border-radius:var(--radius-pill);
  background:var(--accent-soft);color:var(--accent-deep);
}
.tag.is-sub{background:rgba(31,111,92,.09);color:var(--sub);}

/* ---------- Related ---------- */
.related{border-top:1px solid var(--line);padding:clamp(48px,6vw,80px) 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap;}
.section-head .kicker{font-size:13px;color:var(--ink-400);letter-spacing:.06em;margin-bottom:10px;display:block;}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:box-shadow .3s var(--ease),border-color .3s var(--ease),transform .3s var(--ease);
}
.card:hover{box-shadow:var(--shadow-hover);border-color:#D7D1C7;transform:translateY(-2px);}
.card-thumb{overflow:hidden;border-bottom:1px solid var(--line);}
.card-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform .4s var(--ease);}
.card:hover .card-thumb img{transform:scale(1.03);}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:17px;line-height:1.5;}
.card-desc{font-size:14px;line-height:1.8;color:var(--ink-600);margin:0;}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:6px;}
.card-foot .time{font-size:12px;color:var(--ink-400);font-family:var(--font-mono);}
.badge{
  display:inline-block;font-size:12px;padding:4px 10px;border-radius:var(--radius-pill);
  background:rgba(31,111,92,.09);color:var(--sub);align-self:flex-start;
}
.badge.is-lv2{background:rgba(169,113,75,.12);color:#A9714B;}
.badge.is-lv3{background:rgba(155,163,172,.16);color:#6E747C;}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--ink-950);color:rgba(255,255,255,.72);
  padding:clamp(56px,7vw,96px) 0;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.10;pointer-events:none;
}
.cta-band .wrap{position:relative;z-index:2;}
.cta-band h2{color:#fff;margin-bottom:14px;}
.cta-band p{max-width:640px;font-size:16px;}
.cta-form{display:flex;gap:0;max-width:520px;margin-top:26px;flex-wrap:wrap;}
.cta-form input{
  flex:1 1 260px;min-width:0;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.18);border-right:0;border-radius:2px 0 0 2px;
  color:#fff;padding:15px 18px;font-size:15px;font-family:inherit;
  transition:border-color .26s var(--ease),background .26s var(--ease);
}
.cta-form input::placeholder{color:rgba(255,255,255,.42);}
.cta-form input:focus{outline:none;border-color:var(--accent);background:rgba(255,255,255,.1);}
.cta-form .btn{border-radius:0 2px 2px 0;}
.cta-note{font-size:13px;color:rgba(255,255,255,.5);margin-top:14px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink-950);color:rgba(255,255,255,.62);padding:clamp(56px,7vw,84px) 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:0;
  border-top:1px solid rgba(255,255,255,.12);
}
.footer-col{padding:34px 28px;border-left:1px solid rgba(255,255,255,.12);}
.footer-col:first-child{border-left:0;padding-left:0;}
.footer-brand{
  display:flex;align-items:center;gap:10px;font-family:var(--font-serif);
  font-size:18px;color:#fff;font-weight:700;margin-bottom:14px;
}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.56);margin:0;}
.footer-col h4{
  font-family:var(--font-sans);font-size:13px;letter-spacing:.1em;
  color:rgba(255,255,255,.86);font-weight:500;margin-bottom:16px;
}
.footer-col a{display:block;font-size:14px;color:var(--ink-400);padding:5px 0;}
.footer-col a:hover{color:#fff;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col ul li{font-size:14px;color:var(--ink-400);padding:5px 0;}
.footer-copy{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  border-top:1px solid rgba(255,255,255,.12);margin-top:0;
  padding:22px 0 26px;font-size:13px;color:rgba(255,255,255,.44);
}
.footer-copy .mono{color:rgba(255,255,255,.34);}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- Responsive ---------- */
@media (min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,1fr) 240px;}
  .article-aside{display:block;}
}
@media (max-width:1024px){
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-col:nth-child(3){border-left:0;padding-left:0;}
}
@media (max-width:900px){
  .main-nav{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:block;}
  .header-inner{min-height:72px;}
}
@media (max-width:640px){
  body{font-size:16px;}
  h1{font-size:clamp(2rem,8vw,2.6rem);}
  .grid-3{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-col{border-left:0;padding:24px 0;border-top:1px solid rgba(255,255,255,.12);}
  .footer-col:first-child{border-top:0;padding-top:0;}
  .cta-form input{border-right:1px solid rgba(255,255,255,.18);border-radius:2px;flex:1 1 100%;}
  .cta-form .btn{width:100%;justify-content:center;border-radius:2px;margin-top:12px;}
  .article-col{max-width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --ink-950:#0B0C0E;
  --ink-800:#1C1E22;
  --ink-600:#4A4E55;
  --ink-400:#868B93;
  --paper:#F5F3EF;
  --surface:#FFFFFF;
  --line:#E4E0D9;
  --line-soft:#FBF9F7;
  --accent:#FF5A2E;
  --accent-deep:#E0431A;
  --accent-soft:#FFE7DE;
  --sub:#1F6F5C;
  --l1:#6E747C;
  --l2:#A9714B;
  --l3:#9BA3AC;
  --l4:#C2A24E;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --radius-card:4px;
  --radius-img:2px;
  --radius-pill:999px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:300ms;
  --section:clamp(64px,9vw,128px);
  --shadow-hover:0 12px 32px rgba(11,12,14,.08);
}

/* ---------- base ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-800);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;border-radius:var(--radius-img);}
a{color:var(--ink-800);text-decoration:none;transition:color var(--dur) var(--ease);}
a:hover{color:var(--accent-deep);}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:700;color:var(--ink-800);letter-spacing:-.01em;margin:0;line-height:1.25;}
h1{font-size:clamp(2.2rem,5vw,4rem);line-height:1.15;letter-spacing:-.01em;}
h2{font-size:clamp(1.5rem,3vw,2.25rem);}
h3{font-size:20px;font-weight:700;line-height:1.5;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0 0 1.1em;padding-left:1.15em;}
li{margin-bottom:.5em;}
strong{font-weight:700;color:var(--ink-800);}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
input{font-family:inherit;font-size:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
::selection{background:var(--accent-soft);color:var(--ink-950);}

.wrap{width:100%;max-width:1240px;margin:0 auto;padding-left:clamp(20px,5vw,48px);padding-right:clamp(20px,5vw,48px);}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}
.section{padding-top:var(--section);padding-bottom:var(--section);}
.section-tight{padding-top:clamp(48px,6vw,80px);padding-bottom:clamp(48px,6vw,80px);}
.section-head{max-width:760px;margin-bottom:clamp(32px,4vw,56px);}
.section-head .eyebrow{margin-bottom:14px;}
.section-head p{color:var(--ink-600);font-size:16px;margin-top:14px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;line-height:1;letter-spacing:.08em;color:var(--ink-400);
  text-transform:none;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--accent);display:inline-block;}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(245,243,239,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:28px;min-height:82px;}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-serif);font-size:19px;font-weight:700;letter-spacing:-.01em;
  color:var(--ink-800);white-space:nowrap;
}
.logo:hover{color:var(--ink-950);}
.logo-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block;flex:0 0 auto;}
.main-nav{margin-left:auto;display:flex;align-items:center;gap:26px;}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 0;font-size:15px;color:var(--ink-600);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:2px;height:2px;width:0;
  background:var(--accent);transition:width var(--dur) var(--ease);
}
.nav-link:hover{color:var(--ink-800);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--ink-800);font-weight:600;}
.nav-link.is-active::after{width:100%;}
.nav-cta{margin-left:6px;flex:0 0 auto;}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;padding:0;
  background:transparent;border:1px solid var(--line);border-radius:2px;
  flex-direction:column;align-items:center;justify-content:center;gap:6px;
}
.nav-toggle span{display:block;width:20px;height:1px;background:var(--ink-800);transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);}
.nav-open .nav-toggle span:first-child{transform:translateY(3.5px) rotate(45deg);}
.nav-open .nav-toggle span:last-child{transform:translateY(-3.5px) rotate(-45deg);}
.nav-scrim{
  position:fixed;inset:0;background:rgba(11,12,14,.42);opacity:0;pointer-events:none;
  transition:opacity var(--dur) var(--ease);z-index:55;
}
.nav-open .nav-scrim{opacity:1;pointer-events:auto;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 28px;border-radius:2px;border:1px solid transparent;
  font-size:15px;line-height:1;font-weight:600;text-align:center;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn .arrow{transition:transform var(--dur) var(--ease);display:inline-block;}
.btn:hover .arrow{transform:translateX(4px);}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover,.btn-primary:focus{background:var(--accent-deep);color:#fff;}
.btn-ghost{border-color:var(--ink-800);color:var(--ink-800);background:transparent;}
.btn-ghost:hover{background:var(--ink-950);border-color:var(--ink-950);color:#fff;}
.btn-light{background:#fff;color:var(--ink-950);}
.btn-light:hover{background:var(--accent);color:#fff;}
.link-more{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--ink-800);
  padding-bottom:4px;position:relative;
}
.link-more::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;background:var(--ink-800);
  transition:height var(--dur) var(--ease),background var(--dur) var(--ease);
}
.link-more:hover{color:var(--accent-deep);}
.link-more:hover::after{height:2px;background:var(--accent);}
.link-more .arrow{transition:transform var(--dur) var(--ease);}
.link-more:hover .arrow{transform:translateX(4px);}

/* ---------- breadcrumb ---------- */
.breadcrumb{
  padding-top:22px;font-size:13px;color:var(--ink-400);line-height:1.7;
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
}
.breadcrumb a{color:var(--ink-400);}
.breadcrumb a:hover{color:var(--accent-deep);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--ink-600);}

/* ---------- hero ---------- */
.hero{padding:clamp(40px,5vw,72px) 0 clamp(48px,6vw,88px);}
.hero-copy{max-width:640px;}
.hero h1{margin:16px 0 20px;}
.hero-sub{
  font-size:clamp(17px,2vw,20px);line-height:1.7;color:var(--ink-600);
  margin:0 0 22px;font-weight:500;
}
.hero-text{color:var(--ink-600);font-size:16.5px;}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:24px;margin:30px 0 34px;}
.hero-stats{
  display:flex;flex-wrap:wrap;list-style:none;margin:0;padding:22px 0 0;
  border-top:1px solid var(--line);gap:0;
}
.hero-stats li{
  flex:1 1 0;min-width:120px;margin:0;padding:0 20px;
  border-left:1px solid var(--line);
}
.hero-stats li:first-child{padding-left:0;border-left:0;}
.hero-stats .stat-num{
  display:block;font-size:26px;font-weight:700;color:var(--ink-800);line-height:1.2;
  font-family:var(--font-mono);
}
.hero-stats .stat-num em{font-style:normal;font-size:14px;color:var(--ink-400);margin-left:3px;font-family:var(--font-sans);}
.hero-stats .stat-label{display:block;font-size:13px;color:var(--ink-400);line-height:1.7;margin-top:4px;}
.hero-figure{margin:0;}
.hero-figure img{
  width:100%;aspect-ratio:4/5;object-fit:cover;
  border-radius:var(--radius-img);
  box-shadow:none;
}
.hero-figure figcaption{
  margin-top:14px;font-size:13px;color:var(--ink-400);line-height:1.7;
  padding-top:12px;border-top:1px solid var(--line);
}

/* ---------- checklist cards ---------- */
.check-grid{margin-top:6px;}
.point-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px 28px;height:100%;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.point-card:hover{border-color:var(--ink-400);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.point-head{display:flex;align-items:baseline;gap:14px;margin-bottom:12px;}
.point-index{
  font-size:14px;font-weight:700;color:var(--accent);letter-spacing:.06em;
  font-family:var(--font-mono);
}
.point-card h3{font-size:19px;}
.point-card p{color:var(--ink-600);font-size:15.5px;margin:0;line-height:1.85;}
.point-card .point-tag{
  display:inline-block;margin-top:18px;padding:4px 12px;border-radius:var(--radius-pill);
  background:var(--accent-soft);color:var(--accent-deep);font-size:13px;line-height:1.6;
}

/* ---------- comparison table ---------- */
.table-shell{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;
}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
table.compare{
  width:100%;min-width:660px;border-collapse:collapse;margin:0;
  font-size:14px;line-height:1.7;
}
table.compare caption{
  caption-side:top;text-align:left;padding:22px 26px 0;font-size:13px;color:var(--ink-400);
}
table.compare th,table.compare td{
  padding:16px 22px;text-align:left;border-bottom:1px solid var(--line);
  vertical-align:middle;background:var(--surface);
}
table.compare thead th{
  font-size:13px;letter-spacing:.04em;color:var(--ink-400);font-weight:600;
  background:var(--line-soft);white-space:nowrap;
}
table.compare tbody th{
  font-weight:600;color:var(--ink-800);white-space:nowrap;
  position:sticky;left:0;z-index:2;min-width:140px;
}
table.compare tbody tr:hover th,
table.compare tbody tr:hover td{background:var(--line-soft);}
table.compare tbody tr:last-child th,table.compare tbody tr:last-child td{border-bottom:0;}
table.compare td.is-rec{color:var(--ink-800);font-weight:600;}
.mark-yes{color:var(--sub);font-weight:700;}
.mark-no{color:var(--ink-400);}
.cell-note{display:block;font-size:13px;color:var(--ink-400);font-weight:400;}
.col-rec{position:relative;}
.col-rec::after{
  content:"";position:absolute;inset:0;border-left:1px solid var(--accent);border-right:1px solid var(--accent);
  pointer-events:none;
}
.col-rec-tag{
  display:inline-block;margin-left:8px;padding:2px 8px;border-radius:var(--radius-pill);
  background:var(--accent);color:#fff;font-size:12px;line-height:1.6;letter-spacing:.02em;
}
.table-foot{padding:16px 26px 22px;font-size:13px;color:var(--ink-400);border-top:1px solid var(--line);}

/* ---------- steps ---------- */
.steps-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line);}
.steps-list li{
  display:flex;gap:clamp(18px,3vw,44px);align-items:flex-start;
  padding:26px 0;margin:0;border-bottom:1px solid var(--line);
}
.steps-list .step-no{font-family:var(--font-mono);font-size:14px;color:var(--accent);flex:0 0 auto;padding-top:5px;letter-spacing:.06em;}
.steps-list .step-body{max-width:760px;}
.steps-list h3{margin-bottom:8px;}
.steps-list p{color:var(--ink-600);font-size:15.5px;margin:0;}

/* ---------- article body ---------- */
.article-block{max-width:820px;}
.article-block h2{margin:0 0 20px;}
.article-block h2 + p{margin-top:0;}
.article-block p{color:var(--ink-600);font-size:16.5px;line-height:1.9;}
.article-block ul{color:var(--ink-600);font-size:16.5px;line-height:1.9;padding-left:0;list-style:none;}
.article-block ul li{position:relative;padding-left:22px;margin-bottom:14px;}
.article-block ul li::before{
  content:"";position:absolute;left:0;top:.85em;width:8px;height:1px;background:var(--accent);
}
.article-aside{
  border-left:1px solid var(--line);padding-left:28px;
}
.aside-card{position:sticky;top:110px;}
.aside-card h3{font-size:16px;margin-bottom:14px;}
.aside-list{list-style:none;margin:0;padding:0;font-size:14px;line-height:1.8;}
.aside-list li{padding:12px 0;border-bottom:1px solid var(--line);margin:0;color:var(--ink-600);}
.aside-list li:last-child{border-bottom:0;}
.aside-list .mono{color:var(--ink-400);margin-right:10px;font-size:13px;}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:transparent;border:0;padding:24px 44px 24px 0;
  text-align:left;position:relative;font-family:var(--font-serif);
  font-size:18px;font-weight:700;color:var(--ink-800);line-height:1.6;
  transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:var(--accent-deep);}
.faq-q::after,.faq-q::before{
  content:"";position:absolute;right:6px;top:50%;width:14px;height:1px;background:var(--ink-800);
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease);
}
.faq-q::before{transform:rotate(90deg);}
.faq-item.open .faq-q::before{transform:rotate(0deg);background:var(--accent);}
.faq-item.open .faq-q::after{background:var(--accent);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height 340ms var(--ease);
}
.faq-a-inner{
  max-width:720px;padding:0 0 26px;color:var(--ink-600);font-size:16px;line-height:1.9;
}

/* ---------- cta band ---------- */
.cta-band{
  background-color:var(--ink-950);
  background-image:linear-gradient(rgba(11,12,14,.93),rgba(11,12,14,.93)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  color:#fff;padding:clamp(56px,7vw,96px) 0;
}
.cta-band h2{color:#fff;max-width:620px;margin-bottom:16px;}
.cta-band p{color:rgba(255,255,255,.72);max-width:600px;font-size:16px;}
.cta-form{display:flex;gap:0;margin-top:30px;max-width:560px;width:100%;}
.cta-form input[type="text"]{
  flex:1 1 auto;min-width:0;height:52px;padding:0 18px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.18);border-right:0;
  border-radius:2px 0 0 2px;color:#fff;font-size:15px;
}
.cta-form input[type="text"]::placeholder{color:rgba(255,255,255,.42);}
.cta-form input[type="text"]:focus{outline:none;border-color:var(--accent);background:rgba(255,255,255,.1);}
.cta-form .btn{border-radius:0 2px 2px 0;height:52px;padding:0 26px;flex:0 0 auto;}
.form-note{margin-top:14px;font-size:13px;color:rgba(255,255,255,.5);}
.form-msg{margin-top:12px;font-size:13px;color:var(--accent);min-height:20px;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-950);color:rgba(255,255,255,.72);padding:clamp(56px,7vw,88px) 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:0;
  border-top:1px solid rgba(255,255,255,.1);border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-col{padding:34px 28px;border-left:1px solid rgba(255,255,255,.1);}
.footer-col:first-child{padding-left:0;border-left:0;}
.footer-col:last-child{padding-right:0;}
.footer-brand{
  display:flex;align-items:center;gap:10px;font-family:var(--font-serif);
  font-size:18px;font-weight:700;color:#fff;margin-bottom:14px;
}
.footer-brand .logo-dot{background:var(--accent);}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.58);margin:0;}
.footer-col h4{
  font-family:var(--font-sans);font-size:13px;letter-spacing:.14em;color:rgba(255,255,255,.92);
  margin-bottom:16px;font-weight:600;
}
.footer-col a{
  display:block;font-size:14px;color:rgba(255,255,255,.6);margin-bottom:11px;line-height:1.7;
}
.footer-col a:hover{color:#fff;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col ul li{font-size:14px;color:rgba(255,255,255,.6);margin-bottom:11px;line-height:1.7;}
.footer-copy{
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  padding:22px 0 30px;font-size:13px;color:rgba(255,255,255,.42);
}
.footer-copy .mono{color:rgba(255,255,255,.34);letter-spacing:.04em;}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 520ms var(--ease),transform 520ms var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}
.reveal.d1{transition-delay:60ms;}
.reveal.d2{transition-delay:120ms;}
.reveal.d3{transition-delay:180ms;}
.reveal.d4{transition-delay:240ms;}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .hero-copy{max-width:none;}
  .hero-figure img{aspect-ratio:16/10;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;}
  .footer-col{padding:28px 22px;}
  .footer-col:nth-child(4){border-left:0;padding-left:0;}
  .article-aside{display:none;}
}
@media (max-width:899px){
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .main-nav{
    position:fixed;top:0;right:0;height:100vh;width:85%;max-width:360px;
    background:var(--surface);border-left:1px solid var(--line);
    flex-direction:column;align-items:flex-start;gap:4px;margin-left:0;
    padding:104px 30px 40px;overflow-y:auto;z-index:58;
    transform:translateX(100%);transition:transform var(--dur) var(--ease);
  }
  .nav-open .main-nav{transform:translateX(0);}
  .main-nav .nav-link{
    width:100%;font-family:var(--font-serif);font-size:20px;font-weight:700;
    padding:16px 0;border-bottom:1px solid var(--line);color:var(--ink-800);
  }
  .main-nav .nav-link::after{display:none;}
  .main-nav .nav-link.is-active{color:var(--accent-deep);}
  .hero-stats li{padding:0 16px;}
  .hero-stats .stat-num{font-size:22px;}
}
@media (max-width:767px){
  body{font-size:16.5px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-col{border-left:0;padding:24px 0;border-bottom:1px solid rgba(255,255,255,.1);}
  .footer-col:last-child{border-bottom:0;}
  .footer-copy{justify-content:flex-start;}
  .cta-form{flex-direction:column;gap:12px;}
  .cta-form input[type="text"]{border-right:1px solid rgba(255,255,255,.18);border-radius:2px;width:100%;}
  .cta-form .btn{border-radius:2px;width:100%;justify-content:center;}
}
@media (max-width:639px){
  .grid-x{margin-left:0 !important;margin-right:0 !important;}
  .grid-x > .cell{margin-left:0 !important;margin-right:0 !important;padding-left:0;padding-right:0;}
  .grid-x > .cell + .cell{margin-top:24px;}
  h1{font-size:clamp(2rem,8vw,2.6rem);}
  .hero-actions{gap:18px;}
  .btn{width:100%;justify-content:center;}
  .hero-actions .link-more{width:auto;}
  .hero-stats li{flex:1 1 100%;border-left:0;padding:12px 0;border-top:1px solid var(--line);}
  .hero-stats li:first-child{border-top:0;padding-top:0;}
  .steps-list li{flex-direction:column;gap:8px;}
  .point-card{padding:24px 20px;}
  table.compare th,table.compare td{padding:14px 16px;}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --ink-950:#0B0C0E;
  --ink-800:#1C1E22;
  --ink-600:#4A4E55;
  --ink-400:#868B93;
  --paper:#F5F3EF;
  --surface:#FFFFFF;
  --line:#E4E0D9;
  --accent:#FF5A2E;
  --accent-deep:#E0431A;
  --accent-soft:#FFE7DE;
  --sub:#1F6F5C;
  --l1:#6E747C;
  --l2:#A9714B;
  --l3:#9BA3AC;
  --l4:#C2A24E;
  --radius:4px;
  --radius-img:2px;
  --pill:999px;
  --shadow-hover:0 12px 32px rgba(11,12,14,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Noto Serif SC","Songti SC","Source Han Serif SC",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:17px;
  line-height:1.9;
  color:var(--ink-600);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5{font-family:var(--serif);color:var(--ink-800);margin:0;font-weight:600;letter-spacing:-.01em;line-height:1.25}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
a{color:inherit;text-decoration:none;transition:color .28s var(--ease)}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
button,input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
:focus{outline:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
::selection{background:var(--accent-soft);color:var(--ink-800)}

/* ============ 容器与栅格 ============ */
.wrap{max-width:1240px;margin:0 auto;padding:0 clamp(20px,5vw,48px);width:100%}
.grid-x.grid-padding-x{margin-left:-16px;margin-right:-16px}
.grid-x.grid-padding-x>.cell{padding-left:16px;padding-right:16px}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(245,243,239,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:28px;height:84px}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--serif);font-size:20px;font-weight:700;
  color:var(--ink-800);letter-spacing:-.02em;white-space:nowrap;
}
.logo-dot{width:9px;height:9px;border-radius:var(--pill);background:var(--accent);display:inline-block;flex:0 0 auto}
.main-nav{display:flex;align-items:center;gap:34px;margin-left:auto}
.nav-link{
  position:relative;font-size:15px;color:var(--ink-600);
  padding:8px 0;white-space:nowrap;transition:color .28s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--accent);transition:width .32s var(--ease);
}
.nav-link:hover{color:var(--ink-800)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--ink-800);font-weight:600}
.nav-link.is-active::after{width:100%}
.nav-cta{padding:12px 22px;font-size:14px}
.nav-toggle{
  display:none;width:40px;height:40px;border:0;background:transparent;
  position:relative;cursor:pointer;margin-left:8px;
}
.nav-toggle span{
  position:absolute;left:9px;width:22px;height:1px;background:var(--ink-800);
  transition:transform .32s var(--ease),opacity .28s var(--ease);
}
.nav-toggle span:nth-child(1){top:17px}
.nav-toggle span:nth-child(2){top:23px}
.nav-toggle.is-open span:nth-child(1){transform:translateY(3px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){transform:translateY(-3px) rotate(-45deg)}

/* ============ 按钮与链接 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius);border:1px solid transparent;
  padding:15px 28px;font-size:15px;font-weight:600;line-height:1.2;
  cursor:pointer;transition:background .28s var(--ease),color .28s var(--ease),
    border-color .28s var(--ease),transform .28s var(--ease),box-shadow .28s var(--ease);
}
.btn .arrow{transition:transform .28s var(--ease);display:inline-block}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover,.btn-primary:active{background:var(--accent-deep);color:#fff}
.btn-primary:hover .arrow{transform:translateX(4px)}
.btn-ghost{border-color:var(--ink-800);color:var(--ink-800);background:transparent}
.btn-ghost:hover{background:var(--ink-950);color:#fff;border-color:var(--ink-950)}
.link-underline{
  position:relative;display:inline-block;font-size:15px;font-weight:600;
  color:var(--ink-800);padding-bottom:4px;
}
.link-underline::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;
  background:var(--ink-800);transition:height .28s var(--ease),background .28s var(--ease);
}
.link-underline:hover::after{height:2px;background:var(--accent)}
.link-underline:hover{color:var(--ink-800)}
.link-arrow{color:var(--accent);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px}
.link-arrow .arrow{transition:transform .28s var(--ease)}
.link-arrow:hover{color:var(--accent-deep)}
.link-arrow:hover .arrow{transform:translateX(4px)}

/* ============ 通用区块 ============ */
.section{padding:clamp(64px,9vw,128px) 0}
.section-tight{padding:clamp(44px,6vw,80px) 0}
.section-head{max-width:760px;margin-bottom:clamp(36px,5vw,60px)}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{font-size:clamp(1.5rem,3vw,2.25rem);margin-bottom:16px}
.section-head p{font-size:16px;color:var(--ink-600);line-height:1.9}
.eyebrow{
  display:inline-block;font-family:var(--mono);font-size:13px;
  letter-spacing:.14em;color:var(--accent);margin-bottom:16px;
  text-transform:uppercase;
}
.hairline{height:1px;background:var(--line);border:0;margin:0}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:12px;color:var(--ink-400);font-family:var(--sans);
  padding:22px 0 0;
}
.breadcrumb a{color:var(--ink-400)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--ink-800)}

/* ============ Hero 窄栏引言 ============ */
.page-hero{padding:clamp(28px,4vw,48px) 0 clamp(56px,7vw,96px)}
.hero-narrow{max-width:760px;margin:0 auto;text-align:center;padding-top:clamp(32px,5vw,64px)}
.hero-narrow h1{
  font-size:clamp(2.2rem,5vw,4rem);line-height:1.15;letter-spacing:-.01em;
  margin-bottom:20px;
}
.hero-sub{
  font-family:var(--serif);font-size:clamp(1rem,1.6vw,1.2rem);
  color:var(--ink-800);font-weight:600;margin-bottom:24px;line-height:1.6;
}
.hero-lead{font-size:17px;line-height:1.95;color:var(--ink-600);margin-bottom:32px;text-align:left}
.hero-meta{
  display:flex;justify-content:center;flex-wrap:wrap;gap:0;
  margin-top:40px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.hero-meta span{
  font-size:13px;color:var(--ink-400);padding:14px 22px;
  border-left:1px solid var(--line);font-family:var(--mono);
}
.hero-meta span:first-child{border-left:0}
.hero-meta strong{color:var(--ink-800);font-weight:600;font-family:var(--sans);margin-right:6px}

/* ============ 编号纵向流程 ============ */
.timeline{position:relative}
.timeline::before{
  content:"";position:absolute;left:27px;top:12px;bottom:12px;width:1px;background:var(--line);
}
.tl-item{position:relative;padding-left:92px;padding-bottom:clamp(48px,6vw,80px)}
.tl-item:last-child{padding-bottom:0}
.tl-num{
  position:absolute;left:0;top:0;width:56px;height:56px;border-radius:var(--pill);
  background:var(--paper);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:15px;color:var(--accent);letter-spacing:.02em;
  transition:border-color .28s var(--ease),background .28s var(--ease);
}
.tl-item:hover .tl-num{border-color:var(--accent);background:var(--accent-soft)}
.tl-text h3{font-size:20px;font-weight:700;margin-bottom:12px}
.tl-text p{font-size:16px;line-height:1.9;color:var(--ink-600)}
.tl-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border:1px solid var(--line);border-radius:var(--radius-img);
  transition:transform .36s var(--ease);
}
.tl-media{overflow:hidden;border-radius:var(--radius-img)}
.tl-item:hover .tl-media img{transform:scale(1.03)}
.tl-media figcaption{font-size:13px;color:var(--ink-400);margin-top:10px;line-height:1.7}

.tick-list{margin-top:18px}
.tick-list li{
  position:relative;padding-left:22px;font-size:14px;line-height:1.9;
  color:var(--ink-600);margin-bottom:6px;
}
.tick-list li::before{
  content:"";position:absolute;left:0;top:14px;width:12px;height:1px;background:var(--accent);
}

/* ============ 参数条 ============ */
.spec-band{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.spec{padding-top:30px;padding-bottom:30px;border-left:1px solid var(--line)}
.spec:first-child{border-left:0}
.spec-k{
  display:block;font-size:13px;color:var(--ink-400);letter-spacing:.06em;margin-bottom:10px;
}
.spec-v{
  display:block;font-family:var(--mono);font-size:16px;color:var(--ink-800);line-height:1.5;
}

/* ============ 卡片 ============ */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:clamp(24px,3vw,34px);height:100%;
  transition:box-shadow .32s var(--ease),border-color .32s var(--ease),transform .32s var(--ease);
}
.card:hover{box-shadow:var(--shadow-hover);border-color:#D8D2C8;transform:translateY(-2px)}
.card h3{font-size:19px;font-weight:700;margin-bottom:14px}
.card-badge{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;
  padding:4px 12px;border-radius:var(--pill);background:var(--accent-soft);
  color:var(--accent-deep);margin-bottom:16px;font-weight:600;
}
.card-badge.sub{background:rgba(31,111,92,.1);color:var(--sub)}

/* ============ FAQ 折叠 ============ */
.faq-zone{max-width:860px;margin:0 auto}
.accordion{border:0;background:transparent;margin:0}
.accordion .accordion-item{
  border:1px solid var(--line);border-radius:var(--radius);
  background:var(--surface);margin-bottom:0;
}
.accordion .accordion-title{
  border:0;padding:28px 64px 28px 32px;
  font-family:var(--serif);font-size:clamp(1.05rem,1.8vw,1.3rem);
  font-weight:600;color:var(--ink-800);line-height:1.5;
}
.accordion .accordion-title:hover{color:var(--accent-deep)}
.accordion .accordion-title::before{
  content:"+";position:absolute;right:28px;top:50%;transform:translateY(-50%);
  font-family:var(--mono);font-size:22px;color:var(--accent);line-height:1;
}
.accordion .accordion-item.is-active .accordion-title::before{content:"×"}
.accordion .accordion-content{
  border:0;background:transparent;padding:0 32px 32px;
  color:var(--ink-600);font-size:16px;line-height:1.9;
}
.accordion .accordion-content p{max-width:720px}
.mini-faq>div{border-top:1px solid var(--line);padding:20px 0 4px}
.mini-faq>div:first-child{border-top:0;padding-top:0}
.mini-faq h4{font-size:16px;font-weight:700;margin-bottom:8px;color:var(--ink-800);font-family:var(--sans)}
.mini-faq p{font-size:15px;line-height:1.9;color:var(--ink-600);max-width:720px}

/* ============ CTA 区 ============ */
.cta-band{
  position:relative;background:var(--ink-950);color:rgba(255,255,255,.68);
  padding:clamp(64px,8vw,112px) 0;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.16;filter:grayscale(.35);
}
.cta-inner{position:relative;z-index:1;max-width:760px;margin:0 auto;text-align:center}
.cta-inner h2{color:#fff;font-size:clamp(1.5rem,3vw,2.25rem);margin-bottom:16px}
.cta-inner>p{font-size:16px;line-height:1.9;margin-bottom:34px;color:rgba(255,255,255,.66)}
.cta-form{display:flex;gap:0;max-width:520px;margin:0 auto 16px}
.cta-form input{
  flex:1;min-width:0;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.2);border-right:0;
  border-radius:var(--radius) 0 0 var(--radius);
  padding:15px 18px;font-size:15px;color:#fff;
  transition:border-color .28s var(--ease),background .28s var(--ease);
}
.cta-form input::placeholder{color:rgba(255,255,255,.38)}
.cta-form input:focus{border-color:var(--accent);background:rgba(255,255,255,.1)}
.cta-form .btn{border-radius:0 var(--radius) var(--radius) 0;white-space:nowrap}
.form-note{font-size:13px;color:rgba(255,255,255,.4);line-height:1.7}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-950);color:rgba(255,255,255,.55);padding-top:clamp(56px,8vw,96px)}
.footer-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;
  border-top:1px solid rgba(255,255,255,.14);
}
.footer-col{padding:38px 30px;border-left:1px solid rgba(255,255,255,.14)}
.footer-col:first-child{border-left:0;padding-left:0}
.footer-brand{
  display:flex;align-items:center;gap:10px;font-family:var(--serif);
  font-size:19px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:-.01em;
}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.5);max-width:320px}
.footer-col h4{
  font-family:var(--sans);font-size:13px;font-weight:600;
  letter-spacing:.14em;color:rgba(255,255,255,.42);margin-bottom:18px;
}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.6);padding:6px 0}
.footer-col a:hover{color:#fff}
.footer-col ul li{font-size:14px;color:rgba(255,255,255,.6);padding:6px 0;line-height:1.7}
.footer-copy{
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
  border-top:1px solid rgba(255,255,255,.14);margin-top:20px;padding:24px 0 30px;
  font-size:13px;color:rgba(255,255,255,.4);
}
.footer-copy .mono{font-family:var(--mono);letter-spacing:.04em}

/* ============ 进场动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .36s var(--ease),transform .36s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .main-nav{
    position:fixed;top:0;right:0;height:100vh;width:85%;max-width:360px;
    background:var(--surface);flex-direction:column;align-items:flex-start;
    justify-content:flex-start;gap:0;margin-left:0;
    padding:104px 32px 40px;transform:translateX(101%);
    transition:transform .36s var(--ease);border-left:1px solid var(--line);
    z-index:80;overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0)}
  .main-nav .nav-link{
    width:100%;font-family:var(--serif);font-size:22px;padding:16px 0;
    border-bottom:1px solid var(--line);color:var(--ink-800);
  }
  .main-nav .nav-link::after{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:block;z-index:95}
  .hero-lead{text-align:left}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-col:nth-child(3){border-left:0;padding-left:0}
  .footer-col{border-top:1px solid rgba(255,255,255,.14)}
  .footer-col:first-child{border-top:0}
}
@media (max-width:767px){
  body{font-size:16px}
  .header-inner{height:72px}
  .logo{font-size:17px}
  .timeline::before{left:21px}
  .tl-item{padding-left:68px}
  .tl-num{width:44px;height:44px;font-size:13px}
  .tl-media{margin-top:20px}
  .spec:nth-child(odd){border-left:0}
  .spec:nth-child(n+3){border-top:1px solid var(--line)}
  .cta-form{flex-direction:column;gap:12px}
  .cta-form input{border-right:1px solid rgba(255,255,255,.2);border-radius:var(--radius)}
  .cta-form .btn{border-radius:var(--radius);width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-col{padding:28px 0;border-left:0}
  .hero-meta span{border-left:0;padding:10px 16px}
  .accordion .accordion-title{padding:22px 56px 22px 22px}
  .accordion .accordion-title::before{right:20px}
  .accordion .accordion-content{padding:0 22px 26px}
}
@media (max-width:520px){
  .hero-narrow h1{font-size:2.2rem}
  .spec{padding-top:24px;padding-bottom:24px}
  .btn{padding:14px 22px;font-size:14px}
}
@media (min-width:1441px){
  .wrap{padding-left:56px;padding-right:56px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --ink-950:#0B0C0E;
  --ink-800:#1C1E22;
  --ink-600:#4A4E55;
  --ink-400:#868B93;
  --paper:#F5F3EF;
  --surface:#FFFFFF;
  --line:#E4E0D9;
  --accent:#FF5A2E;
  --accent-deep:#E0431A;
  --accent-soft:#FFE7DE;
  --sub:#1F6F5C;
  --l1:#6E747C;
  --l2:#A9714B;
  --l3:#9BA3AC;
  --l4:#C2A24E;
  --radius-card:4px;
  --radius-img:2px;
  --radius-pill:999px;
  --container:1240px;
  --pad:clamp(20px,5vw,48px);
  --section:clamp(64px,9vw,128px);
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Noto Serif SC","Songti SC",Georgia,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",Helvetica,Arial,sans-serif;
  --mono:"SFMono-Regular","JetBrains Mono",Consolas,"Courier New",monospace;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-600);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.9;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
a:hover,a:focus{color:var(--accent);}
button,input,textarea,select{font-family:inherit;font-size:inherit;line-height:inherit;}
button{cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
figure{margin:0;}
table{border-collapse:collapse;width:100%;}
:focus{outline:2px solid var(--accent);outline-offset:2px;}
:focus:not(:focus-visible){outline:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
::selection{background:var(--accent-soft);color:var(--ink-800);}

h1,h2,h3,h4{
  font-family:var(--serif);
  color:var(--ink-800);
  font-weight:600;
  letter-spacing:-.01em;
  margin:0;
}
h1{font-size:clamp(2.2rem,5vw,4rem);line-height:1.15;}
h2{font-size:clamp(1.5rem,3vw,2.25rem);line-height:1.25;}
h3{font-family:var(--sans);font-size:20px;font-weight:700;line-height:1.45;color:var(--ink-800);}
h4{font-size:15px;line-height:1.5;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
strong{color:var(--ink-800);font-weight:600;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ---------- 容器与板块 ---------- */
.wrap{
  max-width:var(--container);
  margin:0 auto;
  padding-left:var(--pad);
  padding-right:var(--pad);
}
.section{padding-top:var(--section);}
.section-sm{padding-top:clamp(48px,6vw,80px);}
.section-head{max-width:720px;margin-bottom:clamp(32px,4vw,56px);}
.section-head h2{margin-bottom:14px;}
.section-sub{font-size:16px;color:var(--ink-400);line-height:1.8;margin:0;}
.eyebrow{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.16em;
  color:var(--accent);
  text-transform:uppercase;
  margin:0 0 14px;
}
.rule{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(245,243,239,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:clamp(14px,3vw,40px);
  min-height:82px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--serif);
  font-size:19px;
  font-weight:700;
  color:var(--ink-800);
  letter-spacing:.005em;
  white-space:nowrap;
}
.logo:hover{color:var(--ink-800);}
.logo-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--accent);
  display:inline-block;
  flex:0 0 8px;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:clamp(14px,2.2vw,30px);
  margin-left:auto;
}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--ink-600);
  padding:6px 0;
  transition:color .3s var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  height:2px;width:100%;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .32s var(--ease);
}
.nav-link:hover{color:var(--ink-800);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink-800);font-weight:600;}
.nav-cta{margin-left:6px;padding:12px 22px;font-size:14px;}
.nav-toggle{
  display:none;
  margin-left:auto;
  width:44px;height:44px;
  background:transparent;
  border:1px solid var(--line);
  border-radius:2px;
  padding:0;
  position:relative;
}
.nav-toggle span{
  position:absolute;
  left:12px;right:12px;
  height:1px;
  background:var(--ink-800);
  transition:transform .3s var(--ease),opacity .3s var(--ease);
}
.nav-toggle span:nth-child(1){top:19px;}
.nav-toggle span:nth-child(2){top:25px;}

/* ---------- 抽屉 ---------- */
.drawer{
  position:fixed;
  top:0;right:0;
  width:85%;
  max-width:400px;
  height:100%;
  background:var(--surface);
  border-left:1px solid var(--line);
  z-index:120;
  transform:translateX(100%);
  transition:transform .36s var(--ease);
  padding:28px clamp(20px,6vw,36px);
  overflow-y:auto;
  display:flex;
  flex-direction:column;
}
.drawer.open{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:22px;
  border-bottom:1px solid var(--line);
}
.drawer-head .logo{font-size:17px;}
.drawer-close{
  background:transparent;
  border:1px solid var(--line);
  border-radius:2px;
  width:40px;height:40px;
  font-size:18px;
  color:var(--ink-800);
  line-height:1;
}
.drawer-close:hover{border-color:var(--accent);color:var(--accent);}
.drawer-nav{display:flex;flex-direction:column;padding-top:16px;}
.drawer-nav a{
  font-family:var(--serif);
  font-size:22px;
  color:var(--ink-800);
  padding:18px 0;
  border-bottom:1px solid var(--line);
  transition:color .3s var(--ease),padding-left .3s var(--ease);
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--accent);padding-left:6px;}
.drawer-cta{margin-top:28px;}
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(11,12,14,.42);
  opacity:0;
  visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s var(--ease);
  z-index:110;
}
.drawer-mask.open{opacity:1;visibility:visible;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  padding:14px 28px;
  border-radius:2px;
  border:1px solid transparent;
  transition:background-color .3s var(--ease),color .3s var(--ease),border-color .3s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover,.btn-primary:focus{background:var(--accent-deep);color:#fff;}
.btn-primary .arw{transition:transform .3s var(--ease);}
.btn-primary:hover .arw{transform:translateX(4px);}
.btn-ghost{background:transparent;border-color:var(--ink-800);color:var(--ink-800);}
.btn-ghost:hover,.btn-ghost:focus{background:var(--ink-950);border-color:var(--ink-950);color:#fff;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--ink-800);
  padding-bottom:2px;
  border-bottom:1px solid var(--ink-800);
  transition:color .3s var(--ease),border-color .3s var(--ease);
}
.link-arrow:hover{color:var(--accent);border-bottom-color:var(--accent);border-bottom-width:2px;}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.02em;
  color:var(--ink-400);
  margin-bottom:22px;
}
.crumb a{color:var(--ink-400);transition:color .3s var(--ease);}
.crumb a:hover{color:var(--accent);}
.crumb .sep{opacity:.6;}
.crumb .now{color:rgba(255,255,255,.72);}

/* ---------- 横幅 ---------- */
.page-hero{
  position:relative;
  background-color:var(--ink-950);
  color:#fff;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url(/assets/images/backpic/back-3.webp);
  background-size:cover;
  background-position:center;
  opacity:.38;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(11,12,14,.62) 0%,rgba(11,12,14,.86) 62%,rgba(11,12,14,.95) 100%);
}
.page-hero .hero-inner{
  position:relative;
  z-index:2;
  padding-top:clamp(48px,7vw,92px);
  padding-bottom:clamp(56px,8vw,104px);
  max-width:900px;
}
.page-hero h1{color:#fff;margin-bottom:18px;}
.hero-kicker{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.18em;
  color:var(--accent);
  margin:0 0 16px;
}
.hero-sub{
  font-size:clamp(1.05rem,1.8vw,1.35rem);
  color:#fff;
  font-weight:500;
  margin:0 0 18px;
  line-height:1.6;
}
.hero-lead{
  font-size:17px;
  line-height:1.9;
  color:rgba(255,255,255,.76);
  max-width:640px;
  margin:0 0 32px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.page-hero .btn-ghost{border-color:rgba(255,255,255,.45);color:#fff;}
.page-hero .btn-ghost:hover{background:#fff;border-color:#fff;color:var(--ink-950);}

/* ---------- 图文 ---------- */
.figure{position:relative;}
.figure img{border-radius:var(--radius-img);width:100%;object-fit:cover;}
.figure figcaption{
  font-size:13px;
  color:var(--ink-400);
  margin-top:12px;
  line-height:1.7;
  padding-left:12px;
  border-left:2px solid var(--line);
}
.lead-text{
  font-size:19px;
  line-height:1.85;
  color:var(--ink-800);
  margin-bottom:1.2em;
}

/* ---------- 要点列表 ---------- */
.mini-list{margin:26px 0 0;border-top:1px solid var(--line);}
.mini-list li{
  display:flex;
  gap:14px;
  padding:14px 0;
  border-bottom:1px solid var(--line);
  font-size:15px;
  color:var(--ink-600);
  line-height:1.8;
}
.mini-list .k{
  font-family:var(--mono);
  font-size:13px;
  color:var(--accent);
  flex:0 0 62px;
  padding-top:2px;
}

/* ---------- 数字条 ---------- */
.stats-band{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:var(--section);}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat{
  padding:30px 26px;
  border-left:1px solid var(--line);
}
.stat:first-child{border-left:0;padding-left:0;}
.stat-num{
  display:block;
  font-family:var(--mono);
  font-size:clamp(1.5rem,3vw,2.15rem);
  color:var(--ink-800);
  line-height:1.2;
  font-weight:500;
}
.stat-num em{font-style:normal;}
.stat-name{
  display:block;
  font-size:13px;
  color:var(--ink-400);
  letter-spacing:.02em;
  margin-top:8px;
  line-height:1.7;
}

/* ---------- 不等高功能卡 ---------- */
.feature-grid{margin-top:8px;}
.feature-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease);
  height:100%;
  display:flex;
  flex-direction:column;
}
.feature-card:hover{
  border-color:#D6D0C6;
  box-shadow:0 12px 32px rgba(11,12,14,.08);
  transform:translateY(-2px);
}
.feature-img{width:100%;object-fit:cover;border-bottom:1px solid var(--line);transition:transform .4s var(--ease);}
.feature-card:hover .feature-img{transform:scale(1.03);}
.img-xl{height:250px;}
.img-md{height:186px;}
.img-sm{height:140px;}
.feature-body{padding:26px 26px 30px;display:flex;flex-direction:column;gap:14px;flex:1;}
.feature-body h3{margin:0;}
.feature-body p{font-size:15px;line-height:1.85;margin:0;}
.tag{
  display:inline-flex;
  align-items:center;
  align-self:flex-start;
  padding:5px 12px;
  border-radius:var(--radius-pill);
  background:var(--accent-soft);
  color:var(--accent-deep);
  font-size:12px;
  letter-spacing:.04em;
  font-weight:600;
}
.tag-sub{background:rgba(31,111,92,.1);color:var(--sub);}
.tag-line{background:transparent;border:1px solid var(--line);color:var(--ink-400);}
.dot-list{margin-top:auto;padding-top:8px;border-top:1px solid var(--line);}
.dot-list li{
  position:relative;
  padding:9px 0 9px 18px;
  font-size:14px;
  color:var(--ink-600);
  line-height:1.8;
}
.dot-list li::before{
  content:"";
  position:absolute;
  left:0;top:18px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--accent);
}

/* ---------- 引用块 ---------- */
.quote-band{
  margin-top:var(--section);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:clamp(42px,6vw,72px) 0;
  background:#FBF9F7;
}
.pull-quote{
  max-width:860px;
  margin:0 auto;
  padding-left:28px;
  border-left:3px solid var(--accent);
  font-family:var(--serif);
  font-size:clamp(1.15rem,2.3vw,1.65rem);
  line-height:1.7;
  color:var(--ink-800);
}
.pull-quote footer{
  margin-top:18px;
  font-family:var(--sans);
  font-size:13px;
  letter-spacing:.04em;
  color:var(--ink-400);
}

/* ---------- 速查清单 ---------- */
.checklist{border-top:1px solid var(--line);}
.checklist li{
  display:flex;
  gap:16px;
  padding:22px 0;
  border-bottom:1px solid var(--line);
  transition:background-color .3s var(--ease);
}
.checklist li:hover{background:#FBF9F7;}
.ck-mark{
  flex:0 0 22px;
  width:22px;height:22px;
  border-radius:50%;
  border:1px solid var(--accent);
  color:var(--accent);
  font-size:12px;
  line-height:20px;
  text-align:center;
  margin-top:5px;
}
.checklist h4{margin:0 0 6px;font-size:16px;color:var(--ink-800);}
.checklist p{font-size:14px;line-height:1.8;color:var(--ink-600);margin:0;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  background:transparent;
  border:0;
  padding:24px 0;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:24px;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink-800);
  line-height:1.7;
  transition:color .3s var(--ease);
}
.faq-q:hover{color:var(--accent);}
.faq-icon{
  position:relative;
  flex:0 0 14px;
  width:14px;height:14px;
  margin-top:7px;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--accent);
  transition:transform .32s var(--ease),opacity .32s var(--ease);
}
.faq-icon::before{left:0;top:6px;width:14px;height:1.5px;}
.faq-icon::after{left:6px;top:0;width:1.5px;height:14px;}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .36s var(--ease);
}
.faq-a-inner{
  max-width:720px;
  padding:0 40px 26px 0;
  font-size:16px;
  line-height:1.9;
  color:var(--ink-600);
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  margin-top:var(--section);
  background:var(--ink-950);
  color:#fff;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;
  background-position:center;
  opacity:.16;
}
.cta-inner{
  position:relative;
  z-index:2;
  padding-top:clamp(56px,8vw,96px);
  padding-bottom:clamp(56px,8vw,96px);
  max-width:760px;
}
.cta-band h2{color:#fff;margin-bottom:16px;}
.cta-band p{color:rgba(255,255,255,.74);font-size:16px;line-height:1.85;max-width:560px;}
.subscribe{
  display:flex;
  margin:28px 0 14px;
  max-width:540px;
}
.subscribe input{
  flex:1;
  min-width:0;
  padding:15px 18px;
  border:1px solid rgba(255,255,255,.24);
  border-right:0;
  background:rgba(255,255,255,.06);
  color:#fff;
  border-radius:2px 0 0 2px;
  font-size:15px;
  transition:border-color .3s var(--ease),background-color .3s var(--ease);
}
.subscribe input::placeholder{color:rgba(255,255,255,.42);}
.subscribe input:focus{
  outline:none;
  border-color:var(--accent);
  background:rgba(255,255,255,.1);
}
.subscribe .btn{border-radius:0 2px 2px 0;}
.form-note{font-size:13px;color:rgba(255,255,255,.5);line-height:1.7;margin:0;}
.form-error{
  font-size:13px;
  color:var(--accent);
  margin:10px 0 0;
  min-height:18px;
}
.form-ok{font-size:13px;color:#8FD8C4;margin:10px 0 0;min-height:18px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-950);
  color:var(--ink-400);
  padding-top:clamp(56px,7vw,88px);
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
}
.footer-col{
  padding:0 30px;
  border-left:1px solid rgba(255,255,255,.09);
}
.footer-col:first-child{border-left:0;padding-left:0;}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:var(--serif);
  font-size:18px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
}
.footer-col p{font-size:14px;line-height:1.85;color:var(--ink-400);margin:0;}
.footer-col h4{
  font-family:var(--sans);
  font-size:14px;
  font-weight:600;
  letter-spacing:.1em;
  color:#fff;
  margin:0 0 18px;
}
.footer-col a{
  display:block;
  font-size:14px;
  color:var(--ink-400);
  padding:7px 0;
  transition:color .3s var(--ease),padding-left .3s var(--ease);
}
.footer-col a:hover{color:#fff;padding-left:4px;}
.footer-col ul li{
  font-size:14px;
  line-height:1.8;
  padding:7px 0;
  color:var(--ink-400);
}
.footer-copy{
  margin-top:clamp(40px,5vw,64px);
  border-top:1px solid rgba(255,255,255,.09);
  padding:22px 0 30px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  align-items:center;
  font-size:13px;
  color:var(--ink-400);
}

/* ---------- 动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
.reveal.in{opacity:1;transform:none;}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    animation-iteration-count:1 !important;
  }
  .reveal{opacity:1;transform:none;}
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1024px){
  .main-nav{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:block;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px 0;}
  .footer-col{padding:0 24px;}
  .footer-col:nth-child(3){border-left:0;padding-left:0;}
  .footer-col:nth-child(4){border-left:1px solid rgba(255,255,255,.09);}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(3){border-left:0;padding-left:0;}
  .stat:nth-child(3),.stat:nth-child(4){border-top:1px solid var(--line);}
}
@media screen and (max-width:640px){
  body{font-size:16px;}
  .header-inner{min-height:68px;}
  .logo{font-size:16px;}
  h3{font-size:18px;}
  .page-hero .hero-inner{padding-top:36px;padding-bottom:56px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .stats-grid{grid-template-columns:1fr;}
  .stat{border-left:0;padding:22px 0;}
  .stat + .stat{border-top:1px solid var(--line);}
  .footer-grid{grid-template-columns:1fr;}
  .footer-col{border-left:0;padding:0;}
  .footer-col + .footer-col{margin-top:28px;}
  .subscribe{flex-direction:column;gap:10px;}
  .subscribe input{border-right:1px solid rgba(255,255,255,.24);border-radius:2px;}
  .subscribe .btn{width:100%;border-radius:2px;}
  .img-xl{height:200px;}
  .img-md{height:170px;}
  .img-sm{height:150px;}
  .footer-copy{flex-direction:column;align-items:flex-start;}
}
@media screen and (min-width:1441px){
  .wrap{padding-left:64px;padding-right:64px;}
  body{letter-spacing:.002em;}
}