/* roulang page: index */
:root{
  --ink:#1C3A34;
  --ink-deep:#142B26;
  --mist:#7C9A93;
  --sun:#E2663C;
  --sun-deep:#C9542D;
  --bg:#F6F5F1;
  --deep:#0F211E;
  --text:#17211F;
  --muted:#5A6A66;
  --line:#E2E1DA;
  --skeleton:#EDECE6;
  --card:#FFFFFF;
  --r-card:14px;
  --r-btn:8px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,33,30,.05);
  --sh-2:0 10px 28px rgba(16,33,30,.10);
  --sh-3:0 20px 48px rgba(16,33,30,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;
  --font-cn:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","SF Pro Display",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.78;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .24s var(--ease),background-color .24s var(--ease),border-color .24s var(--ease);}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;color:inherit;}
input,textarea{font-family:inherit;font-size:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--sun);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
.section{padding:104px 0;}
.section--tight{padding:72px 0;}
.section--deep{background:var(--deep);color:#EDF2F0;}
.section--paper{background:#FFFFFF;}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:500;letter-spacing:.16em;color:var(--mist);text-transform:uppercase;}
.eyebrow::before{content:"";width:28px;height:1px;background:var(--sun);display:block;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px;flex-wrap:wrap;}
.sec-title{font-size:clamp(26px,3.4vw,40px);line-height:1.2;font-weight:700;letter-spacing:-.01em;color:var(--ink);}
.section--deep .sec-title{color:#F2F6F4;}
.sec-sub{margin-top:14px;max-width:620px;color:var(--muted);font-size:15px;}
.section--deep .sec-sub{color:#9FB3AD;}
.rule{height:1px;background:var(--line);border:0;margin:0;}

/* ============ 公告条 ============ */
.topbar{background:var(--deep);color:#C9D6D1;font-size:13px;}
.topbar .container{display:flex;align-items:center;justify-content:space-between;min-height:36px;gap:16px;}
.topbar__note{display:flex;align-items:center;gap:10px;}
.topbar__dot{width:6px;height:6px;border-radius:50%;background:var(--sun);flex:none;}
.topbar__link{color:#EDF2F0;border-bottom:1px solid rgba(226,102,60,.6);padding-bottom:1px;}
.topbar__link:hover{color:var(--sun);}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:80;background:rgba(246,245,241,.94);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:border-color .24s var(--ease),box-shadow .24s var(--ease);}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 20px rgba(16,33,30,.06);}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.logo{display:flex;align-items:center;gap:10px;flex:none;}
.logo__mark{width:34px;height:34px;border-radius:10px;background:var(--ink);position:relative;flex:none;}
.logo__mark::after{content:"";position:absolute;left:50%;top:50%;width:13px;height:13px;border:2px solid var(--sun);border-radius:50%;transform:translate(-50%,-50%);}
.logo__text{font-weight:700;font-size:17px;letter-spacing:-.01em;color:var(--ink);white-space:nowrap;}
.logo__text span{color:var(--sun);}
.nav__list{display:flex;align-items:center;gap:4px;}
.nav__item{position:relative;}
.nav__link{display:inline-flex;align-items:center;gap:6px;padding:10px 14px;font-size:15px;color:var(--text);border-radius:var(--r-btn);position:relative;}
.nav__link:hover{color:var(--ink);background:rgba(28,58,52,.05);}
.nav__link.is-active{color:var(--ink);font-weight:600;}
.nav__link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--sun);border-radius:2px;}
.nav__caret{width:8px;height:8px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px);opacity:.6;}
.nav__actions{display:flex;align-items:center;gap:12px;}
.nav__cta{padding:11px 20px;font-size:14px;}

/* Mega 面板 */
.mega{position:absolute;top:calc(100% + 12px);left:50%;transform:translateX(-50%) translateY(8px);width:620px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-3);padding:24px;opacity:0;visibility:hidden;transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;display:grid;grid-template-columns:1.05fr 1fr;gap:28px;z-index:90;}
.mega::before{content:"";position:absolute;top:-14px;left:0;right:0;height:14px;background:transparent;}
.nav__item.has-mega:hover .mega,.nav__item.has-mega:focus-within .mega,.nav__item.has-mega.is-open .mega{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);}
.mega__title{font-size:12px;letter-spacing:.16em;color:var(--mist);font-weight:500;margin-bottom:14px;}
.mega__list li + li{margin-top:2px;}
.mega__link{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-radius:var(--r-btn);font-size:14.5px;color:var(--text);}
.mega__link:hover{background:#F1F0EA;color:var(--ink);}
.mega__link i{font-style:normal;color:var(--sun);opacity:0;transform:translateX(-4px);transition:all .24s var(--ease);}
.mega__link:hover i{opacity:1;transform:translateX(0);}
.mega__news{background:#F6F5F1;border:1px solid var(--line);border-radius:12px;padding:16px;position:relative;}
.mega__news::after{content:"更新";position:absolute;top:-9px;right:14px;font-size:11px;padding:2px 8px;border-radius:var(--r-pill);background:var(--sun);color:#fff;}
.mega__news li{padding:9px 0;border-bottom:1px dashed var(--line);}
.mega__news li:last-child{border-bottom:0;padding-bottom:0;}
.mega__news a{display:block;font-size:14px;color:var(--text);line-height:1.5;}
.mega__news a:hover{color:var(--sun);}
.mega__news time{display:block;font-size:12px;color:var(--muted);font-family:var(--font-num);margin-top:2px;}

/* 汉堡与抽屉 */
.burger{display:none;width:42px;height:42px;border-radius:var(--r-btn);border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:5px;background:#fff;}
.burger span{display:block;width:18px;height:1.6px;background:var(--ink);border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease);}
.burger.is-open span:nth-child(1){transform:translateY(6.6px) rotate(45deg);}
.burger.is-open span:nth-child(2){opacity:0;}
.burger.is-open span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg);}
.drawer{position:fixed;inset:0;background:var(--bg);z-index:120;padding:24px;display:flex;flex-direction:column;gap:24px;transform:translateX(100%);transition:transform .3s var(--ease);overflow-y:auto;}
.drawer.is-open{transform:translateX(0);}
.drawer__head{display:flex;align-items:center;justify-content:space-between;}
.drawer__close{width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--ink);background:#fff;}
.drawer__nav{display:flex;flex-direction:column;gap:6px;}
.drawer__nav a{padding:16px 4px;font-size:22px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--line);}
.drawer__group-title{font-size:12px;letter-spacing:.16em;color:var(--mist);margin:20px 0 8px;}
.drawer__sub a{display:block;padding:11px 4px;font-size:15px;color:var(--muted);}
.drawer__cta{margin-top:12px;}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 26px;border-radius:var(--r-btn);font-size:15px;font-weight:600;transition:all .24s var(--ease);border:1px solid transparent;white-space:nowrap;}
.btn--primary{background:var(--ink);color:#F4F7F6;box-shadow:var(--sh-1);}
.btn--primary:hover{background:var(--ink-deep);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--ink);}
.btn--ghost:hover{background:var(--ink);color:#F4F7F6;border-color:var(--ink);}
.btn--sun{background:var(--sun);color:#fff;}
.btn--sun:hover{background:var(--sun-deep);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn .arrow{transition:transform .24s var(--ease);}
.btn:hover .arrow{transform:translateX(3px);}
.btn:disabled,.btn[disabled]{opacity:.45;pointer-events:none;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--ink);position:relative;padding-bottom:3px;}
.link-more::after{content:"";position:absolute;left:0;bottom:0;height:1.5px;width:0;background:var(--sun);transition:width .28s var(--ease);}
.link-more:hover::after{width:calc(100% - 20px);}
.link-more:hover{color:var(--sun);}
.badge{display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--r-pill);font-size:12px;font-weight:500;background:rgba(28,58,52,.08);color:var(--ink);}
.badge--sun{background:rgba(226,102,60,.12);color:var(--sun-deep);}
.badge--light{background:rgba(255,255,255,.14);color:#E7EFEC;}

/* ============ Hero ============ */
.hero{padding:88px 0 96px;position:relative;overflow:hidden;}
.hero::before{content:"";position:absolute;left:-10%;top:-30%;width:620px;height:620px;border-radius:50%;background:radial-gradient(circle,rgba(124,154,147,.16),transparent 68%);pointer-events:none;}
.hero__grid{display:grid;grid-template-columns:1.08fr .92fr;gap:64px;align-items:center;position:relative;}
.hero__tag{margin-bottom:22px;}
.hero h1{font-size:clamp(34px,5.2vw,58px);line-height:1.12;font-weight:700;letter-spacing:-.02em;color:var(--ink);}
.hero h1 em{font-style:normal;color:var(--sun);}
.hero__sub{margin-top:22px;font-size:17px;color:var(--muted);max-width:520px;}
.hero__actions{margin-top:34px;display:flex;align-items:center;gap:26px;flex-wrap:wrap;}
.hero__trust{margin-top:44px;display:flex;align-items:center;gap:0;flex-wrap:wrap;font-size:14px;color:var(--muted);}
.hero__trust li{display:flex;align-items:center;gap:8px;padding:0 18px;border-left:1px solid var(--line);}
.hero__trust li:first-child{padding-left:0;border-left:0;}
.hero__trust i{font-style:normal;color:var(--sun);font-weight:700;font-family:var(--font-num);font-size:12px;}
.hero__media{position:relative;}
.hero__media::before{content:"";position:absolute;left:-14px;top:-14px;width:64px;height:64px;background:var(--sun);border-radius:6px;z-index:0;}
.hero__frame{position:relative;z-index:1;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:#fff;box-shadow:var(--sh-2);}
.hero__frame img{width:100%;aspect-ratio:4/3.2;object-fit:cover;}
.hero__caption{position:absolute;z-index:2;left:24px;bottom:-24px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:16px 20px;box-shadow:var(--sh-3);max-width:280px;}
.hero__caption strong{display:block;font-size:14px;color:var(--ink);}
.hero__caption span{font-size:13px;color:var(--muted);}

/* ============ 编号卖点条 ============ */
.point-list{border-top:1px solid var(--line);}
.point{display:grid;grid-template-columns:120px 1fr 320px;gap:40px;align-items:start;padding:38px 0;border-bottom:1px solid var(--line);transition:background-color .28s var(--ease);}
.point:hover{background:rgba(255,255,255,.7);}
.point__num{font-family:var(--font-num);font-size:44px;line-height:1;font-weight:700;color:var(--sun);letter-spacing:-.03em;}
.point__title{font-size:22px;font-weight:600;color:var(--ink);}
.point__desc{margin-top:10px;color:var(--muted);font-size:15px;max-width:560px;}
.point__meta{font-size:14px;color:var(--mist);border-left:1px solid var(--line);padding-left:24px;line-height:1.9;}

/* ============ 场景演示 ============ */
.demo{display:grid;grid-template-columns:.95fr 1.05fr;gap:56px;align-items:start;}
.tabs{display:inline-flex;gap:6px;padding:5px;background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);margin-bottom:32px;flex-wrap:wrap;}
.tab{padding:9px 18px;border-radius:var(--r-pill);font-size:14px;color:var(--muted);transition:all .24s var(--ease);}
.tab:hover{color:var(--ink);}
.tab.is-active{background:var(--ink);color:#fff;font-weight:600;}
.steps{position:relative;padding-left:36px;}
.steps::before{content:"";position:absolute;left:9px;top:8px;bottom:8px;width:1px;background:var(--line);}
.step{position:relative;padding-bottom:32px;}
.step:last-child{padding-bottom:0;}
.step::before{content:"";position:absolute;left:-32px;top:6px;width:19px;height:19px;border-radius:50%;background:#fff;border:1px solid var(--mist);transition:all .24s var(--ease);}
.step:hover::before{border-color:var(--sun);box-shadow:0 0 0 4px rgba(226,102,60,.14);}
.step__no{font-family:var(--font-num);font-size:12px;color:var(--sun);font-weight:700;letter-spacing:.08em;}
.step__title{font-size:17px;font-weight:600;color:var(--ink);margin-top:2px;}
.step__text{margin-top:6px;font-size:14.5px;color:var(--muted);max-width:460px;}
.demo__media{border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:#fff;box-shadow:var(--sh-2);}
.demo__media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.demo__note{padding:18px 22px;border-top:1px solid var(--line);font-size:14px;color:var(--muted);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.demo__note b{color:var(--ink);font-family:var(--font-num);}
.panel{display:none;}
.panel.is-active{display:block;}

/* ============ 内容列表 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.post-grid .post-card:first-child{grid-column:span 2;grid-row:span 1;}
.post-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);display:flex;flex-direction:column;}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D6D4CB;}
.post-card__cover{position:relative;overflow:hidden;}
.post-card__cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease);}
.post-card:hover .post-card__cover img{transform:scale(1.03);}
.post-card__badge{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.94);color:var(--ink);font-size:12px;font-weight:500;padding:4px 12px;border-radius:var(--r-pill);}
.post-card__body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-card__title{font-size:18px;font-weight:600;color:var(--ink);line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-grid .post-card:first-child .post-card__title{font-size:22px;}
.post-card__excerpt{font-size:14.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card__foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);font-family:var(--font-num);}
.post-card__foot .go{font-family:var(--font-cn);color:var(--ink);font-weight:600;display:inline-flex;align-items:center;gap:4px;transition:color .24s var(--ease),transform .24s var(--ease);}
.post-card:hover .post-card__foot .go{color:var(--sun);transform:translateX(3px);}
.empty-state{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:64px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:16px;}
.empty-state svg{width:52px;height:52px;stroke:var(--mist);opacity:.6;}
.empty-state p{color:var(--muted);font-size:15px;}

/* ============ 证据区 ============ */
.stat-band{background:var(--deep);color:#EDF2F0;}
.stat-band .container{display:grid;grid-template-columns:repeat(4,1fr);gap:0;padding-top:56px;padding-bottom:56px;}
.stat{padding:0 28px;border-left:1px solid rgba(255,255,255,.12);}
.stat:first-child{border-left:0;padding-left:0;}
.stat__num{font-family:var(--font-num);font-size:clamp(30px,3.6vw,44px);font-weight:700;letter-spacing:-.02em;color:#fff;line-height:1.1;}
.stat__num small{font-size:16px;color:var(--sun);margin-left:2px;}
.stat__label{margin-top:8px;font-size:14px;color:#9FB3AD;}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px;}
.quote{background:#fff;border:1px solid var(--line);border-left:3px solid var(--sun);border-radius:0 var(--r-card) var(--r-card) 0;padding:26px 24px;box-shadow:var(--sh-1);}
.quote p{font-size:15px;color:var(--text);}
.quote footer{margin-top:16px;font-size:13px;color:var(--muted);}
.quote footer strong{display:block;color:var(--ink);font-size:14px;font-weight:600;}

/* ============ FAQ ============ */
.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:24px;padding:24px 0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);transition:color .24s var(--ease);}
.faq-q:hover{color:var(--sun);}
.faq-icon{position:relative;width:16px;height:16px;flex:none;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--sun);border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease);}
.faq-icon::before{width:14px;height:1.8px;transform:translate(-50%,-50%);}
.faq-icon::after{width:1.8px;height:14px;transform:translate(-50%,-50%);}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .24s var(--ease);}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a__inner{overflow:hidden;}
.faq-a p{padding:0 0 26px 0;font-size:15px;color:var(--muted);max-width:820px;}

/* ============ CTA ============ */
.cta-band{background:var(--deep);color:#EDF2F0;padding:88px 0;}
.cta-band .container{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.cta-band h2{font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.25;color:#fff;}
.cta-band p{margin-top:12px;color:#9FB3AD;font-size:15px;max-width:560px;}

/* ============ 页脚 ============ */
.site-footer{background:#0B1A17;color:#A9BBB6;padding:72px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px;}
.footer-brand__logo{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand__logo .logo__mark{background:#1C3A34;}
.footer-brand__logo span{color:#F2F6F4;font-weight:700;font-size:17px;}
.footer-col h4{font-size:14px;font-weight:600;color:#F2F6F4;margin-bottom:16px;}
.footer-col li + li{margin-top:10px;}
.footer-col a{color:#A9BBB6;}
.footer-col a:hover{color:var(--sun);}
.footer-col p{color:#8FA29D;line-height:1.85;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.09);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#7E918C;}

/* ============ 移动端固定条 ============ */
.mobile-bar{position:fixed;left:0;right:0;bottom:0;z-index:100;display:none;align-items:center;justify-content:space-between;gap:12px;height:60px;padding:0 16px calc(0px + env(safe-area-inset-bottom));background:rgba(15,33,30,.97);color:#EDF2F0;box-shadow:0 -6px 24px rgba(16,33,30,.2);transition:opacity .3s var(--ease),transform .3s var(--ease);}
.mobile-bar span{font-size:13px;color:#C4D3CE;}
.mobile-bar .btn{padding:10px 16px;font-size:13px;}
.mobile-bar.is-hidden{opacity:0;transform:translateY(100%);pointer-events:none;}

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

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero__grid{gap:44px;}
  .post-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:1023px){
  .section{padding:76px 0;}
  .hero{padding:64px 0 72px;}
  .hero__grid{grid-template-columns:1fr;gap:48px;}
  .hero__sub{max-width:100%;}
  .point{grid-template-columns:78px 1fr;gap:24px;}
  .point__meta{grid-column:2;border-left:0;padding-left:0;max-width:560px;}
  .demo{grid-template-columns:1fr;gap:40px;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .post-grid .post-card:first-child{grid-column:span 2;}
  .stat-band .container{grid-template-columns:repeat(2,1fr);gap:32px 0;padding-top:48px;padding-bottom:48px;}
  .stat:nth-child(3){border-left:0;padding-left:0;}
  .quote-grid{grid-template-columns:1fr;gap:16px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .nav__list,.nav__actions .nav__cta{display:none;}
  .burger{display:flex;}
  .hero{padding:48px 0 64px;}
  .hero h1{font-size:clamp(34px,9vw,42px);}
  .hero__trust{flex-direction:column;align-items:flex-start;gap:10px;}
  .hero__trust li{border-left:0;padding:0;}
  .hero__caption{position:static;margin-top:16px;max-width:100%;}
  .hero__media::before{width:44px;height:44px;left:-8px;top:-8px;}
  .sec-head{margin-bottom:32px;}
  .point{padding:26px 0;grid-template-columns:56px 1fr;}
  .point__num{font-size:32px;}
  .point__title{font-size:19px;}
  .post-grid{grid-template-columns:1fr;}
  .post-grid .post-card:first-child{grid-column:span 1;}
  .post-grid .post-card:first-child .post-card__title{font-size:19px;}
  .stat-band .container{grid-template-columns:1fr;gap:26px;}
  .stat{border-left:0;padding:0;}
  .cta-band{padding:56px 0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .mobile-bar{display:flex;}
  .tabs{width:100%;border-radius:var(--r-card);}
  .tab{flex:1;text-align:center;padding:9px 10px;}
  .faq-q{font-size:15.5px;padding:20px 0;}
}
@media (max-width:400px){
  .point__num{font-size:26px;}
  .stat__num{font-size:28px;}
  .badge{font-size:11px;padding:3px 10px;}
  .btn{padding:12px 18px;font-size:14px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --ink:#1C3A34;
  --ink-2:#0F211E;
  --mist:#7C9A93;
  --dawn:#E2663C;
  --bg:#F6F5F1;
  --text:#17211F;
  --muted:#5A6A66;
  --line:#E2E1DA;
  --card:#FFFFFF;
  --skeleton:#EDECE6;
  --r-card:14px;
  --r-btn:8px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,33,30,.05);
  --sh-2:0 10px 28px rgba(16,33,30,.10);
  --sh-3:0 20px 48px rgba(16,33,30,.14);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:260ms;
  --container:1240px;
  --font:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.78;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img,svg,video{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none}
a:hover{color:var(--dawn)}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--dawn);outline-offset:2px;border-radius:4px}
::selection{background:rgba(226,102,60,.22)}
.skip{position:absolute;left:-9999px;top:0}
.skip:focus{left:16px;top:12px;z-index:200;background:#fff;padding:10px 16px;border-radius:var(--r-btn);box-shadow:var(--sh-2)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ============ 顶部公告条 ============ */
.topbar{background:var(--ink-2);color:#D9E3E0;font-size:13px}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;padding:6px 0}
.topbar__note{display:flex;align-items:center;gap:10px;line-height:1.5}
.topbar__note::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--dawn);flex:none}
.topbar__link{color:#F0F5F4;font-size:13px;border-bottom:1px solid transparent;transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease)}
.topbar__link:hover{color:#fff;border-color:var(--dawn)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(246,245,241,.94);
  backdrop-filter:saturate(150%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-1)}
.nav{display:flex;align-items:center;gap:24px;min-height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo__mark{
  width:26px;height:26px;flex:none;border-radius:8px;
  background:linear-gradient(140deg,var(--ink) 0%,var(--ink) 46%,var(--dawn) 46%,var(--dawn) 100%);
  box-shadow:var(--sh-1);
  position:relative;
}
.logo__mark::after{
  content:"";position:absolute;inset:7px 8px 8px 7px;border:1.5px solid rgba(255,255,255,.85);border-radius:4px;
}
.logo__text{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--ink);white-space:nowrap}
.logo:hover .logo__text{color:var(--ink)}
.nav__list{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav__item{position:relative}
.nav__link{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;border-radius:var(--r-btn);
  font-size:15px;color:#2E3A37;position:relative;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav__link:hover{color:var(--ink);background:rgba(28,58,52,.06)}
.nav__link.is-active{color:var(--ink);font-weight:600}
.nav__link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--dawn);
}
.nav__caret{width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-1px);opacity:.7}
.nav__actions{display:flex;align-items:center;gap:12px;flex:none}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;background:none;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn--primary{background:var(--ink);color:#F3F7F5;box-shadow:var(--sh-1)}
.btn--primary:hover{background:#152C27;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn--primary:active{transform:translateY(0);background:#102420}
.btn--ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn--ghost:hover{background:var(--ink);color:#F3F7F5;border-color:var(--ink)}
.btn--dawn{background:var(--dawn);color:#fff}
.btn--dawn:hover{background:#CF5730;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.btn .arw{transition:transform var(--dur) var(--ease)}
.btn:hover .arw{transform:translateX(2px)}
.link-underline{
  display:inline-flex;align-items:center;gap:6px;position:relative;
  font-size:15px;font-weight:600;color:var(--ink);padding-bottom:2px;
}
.link-underline::after{
  content:"";position:absolute;left:0;bottom:0;height:1.5px;width:0;background:var(--dawn);
  transition:width var(--dur) var(--ease);
}
.link-underline:hover::after{width:100%}
.link-underline:hover .arw{transform:translateX(2px)}
.link-underline .arw{transition:transform var(--dur) var(--ease)}
.burger{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;cursor:pointer;padding:0;place-items:center;
}
.burger span{display:block;width:18px;height:1.8px;background:var(--ink);border-radius:2px;margin:3.5px auto;transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(5.3px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.3px) rotate(-45deg)}

/* Mega 面板 */
.mega{
  position:absolute;top:calc(100% + 14px);left:50%;transform:translate(-50%,8px);
  width:600px;display:grid;grid-template-columns:1.1fr 1fr;gap:24px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-3);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur);
}
.mega::before{content:"";position:absolute;top:-16px;left:0;right:0;height:16px}
.has-mega:hover .mega,.has-mega.is-open .mega{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}
.mega__title{font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--mist);text-transform:uppercase;margin-bottom:12px}
.mega__list li+li{margin-top:2px}
.mega__link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:9px 10px;border-radius:8px;font-size:15px;color:#243330;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.mega__link:hover{background:rgba(28,58,52,.07);color:var(--ink)}
.mega__link i{font-style:normal;color:var(--mist);transition:transform var(--dur) var(--ease),color var(--dur) var(--ease)}
.mega__link:hover i{transform:translateX(3px);color:var(--dawn)}
.mega__news li{display:flex;gap:10px;align-items:baseline;justify-content:space-between;padding:8px 0;border-bottom:1px dashed var(--line)}
.mega__news li:last-child{border-bottom:0}
.mega__news a{font-size:14px;color:#243330;line-height:1.5}
.mega__news a:hover{color:var(--dawn)}
.mega__news time{font-size:12px;color:var(--mist);flex:none}

/* 抽屉 */
.drawer{
  position:fixed;inset:0;z-index:150;background:rgba(15,33,30,.55);
  opacity:0;visibility:hidden;transition:opacity var(--dur) var(--ease),visibility var(--dur);
}
.drawer.is-open{opacity:1;visibility:visible}
.drawer__panel{
  position:absolute;top:0;right:0;bottom:0;width:min(420px,92vw);
  background:var(--bg);padding:24px 22px 40px;overflow-y:auto;
  transform:translateX(100%);transition:transform 320ms var(--ease);
}
.drawer.is-open .drawer__panel{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:24px}
.drawer__close{
  width:38px;height:38px;border-radius:var(--r-btn);border:1px solid var(--line);background:#fff;
  cursor:pointer;font-size:18px;line-height:1;color:var(--ink);
}
.drawer__group+.drawer__group{margin-top:28px}
.drawer__title{font-size:12px;letter-spacing:.08em;color:var(--mist);font-weight:600;margin-bottom:10px}
.drawer__list a{
  display:block;padding:12px 0;border-bottom:1px solid var(--line);
  font-size:17px;font-weight:600;color:var(--ink);
}
.drawer__list a:hover{color:var(--dawn)}

/* ============ Hero ============ */
.page-hero{
  position:relative;padding:48px 0 64px;
  background-image:linear-gradient(180deg,rgba(246,245,241,.4),rgba(246,245,241,.96)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--line);
}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 420px;gap:56px;align-items:center}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--dawn)}
.breadcrumb .sep{color:#BCC7C3}
.breadcrumb .cur{color:var(--ink);font-weight:600}
.hero-title{
  font-size:clamp(34px,4.6vw,54px);line-height:1.12;letter-spacing:-.02em;font-weight:700;color:var(--ink);
  margin-bottom:20px;
}
.hero-title .hl{position:relative;white-space:nowrap}
.hero-title .hl::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:8px;background:rgba(226,102,60,.20);z-index:-1;border-radius:2px;
}
.hero-lead{font-size:17px;color:var(--muted);max-width:640px;margin-bottom:26px}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 13px;border-radius:var(--r-pill);background:rgba(28,58,52,.08);
  color:var(--ink);font-size:12px;font-weight:500;
}
.chip--dawn{background:rgba(226,102,60,.13);color:#B2411D}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:22px}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--line);box-shadow:var(--sh-2);
}
.hero-media::before{
  content:"";position:absolute;left:-10px;top:-10px;width:56px;height:56px;border-radius:10px;
  background:var(--dawn);opacity:.9;z-index:0;
}
.hero-media img{position:relative;z-index:1}
.hero-media__tag{
  position:absolute;right:-8px;bottom:-8px;z-index:2;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
  padding:8px 16px;font-size:13px;font-weight:600;color:var(--ink);box-shadow:var(--sh-2);
}

/* ============ 长文分段布局 ============ */
.doc-section{padding:88px 0 96px}
.doc-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:64px;align-items:start}
.doc{max-width:760px}
.doc__block{padding-top:8px;margin-bottom:56px;scroll-margin-top:110px}
.doc__block:last-child{margin-bottom:0}
.doc__h2{
  position:relative;font-size:clamp(22px,2.4vw,30px);line-height:1.28;font-weight:700;color:var(--ink);
  padding-top:22px;margin-bottom:18px;letter-spacing:-.01em;
}
.doc__h2::before{content:"";position:absolute;top:0;left:0;width:100%;height:1px;background:var(--line)}
.doc__h2::after{content:"";position:absolute;top:-1px;left:0;width:44px;height:3px;border-radius:3px;background:var(--dawn)}
.doc__h2 .num{
  display:block;font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--dawn);margin-bottom:8px;
  font-family:Inter,system-ui,sans-serif;
}
.doc p{margin-bottom:16px;color:#22302D}
.doc p:last-child{margin-bottom:0}
.doc strong{color:var(--ink)}
.note-list{margin:20px 0 22px;border-top:1px solid var(--line)}
.note-list li{
  display:flex;gap:14px;padding:14px 0;border-bottom:1px solid var(--line);font-size:15.5px;color:#22302D;
}
.note-list .dot{
  flex:none;width:22px;height:22px;border-radius:50%;background:rgba(28,58,52,.09);color:var(--ink);
  display:grid;place-items:center;font-size:12px;font-weight:700;margin-top:3px;
}
.quote{
  background:#EFEEE8;border-left:3px solid var(--mist);border-radius:0 var(--r-card) var(--r-card) 0;
  padding:18px 22px;margin:22px 0;color:#2B3835;font-size:15.5px;
}
.steps{margin:22px 0;counter-reset:st}
.steps li{
  position:relative;padding:0 0 0 42px;margin-bottom:18px;color:#22302D;
}
.steps li::before{
  counter-increment:st;content:counter(st,decimal-leading-zero);
  position:absolute;left:0;top:1px;width:28px;height:28px;border-radius:8px;
  background:var(--ink);color:#EDF2F0;font-size:12px;font-weight:700;
  display:grid;place-items:center;font-family:Inter,system-ui,sans-serif;
}
.steps li:last-child{margin-bottom:0}
.figure{margin:28px 0}
.figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line)}
.figure figcaption{font-size:13px;color:var(--mist);margin-top:10px}
.mini-table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px}
.mini-table caption{text-align:left;font-size:13px;color:var(--mist);margin-bottom:10px}
.mini-table th,.mini-table td{border-bottom:1px solid var(--line);padding:12px 8px;text-align:left;vertical-align:top}
.mini-table th{color:var(--ink);font-weight:600;white-space:nowrap}
.mini-table tr:last-child td{border-bottom:0}

/* 侧栏 */
.doc-side{position:sticky;top:100px;display:grid;gap:20px}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
}
.side-card__title{
  font-size:12px;font-weight:600;letter-spacing:.1em;color:var(--mist);margin-bottom:14px;
}
.toc__link{
  display:flex;gap:10px;align-items:baseline;padding:8px 0;font-size:14.5px;color:#2A3835;
  border-bottom:1px dashed var(--line);transition:color var(--dur) var(--ease),padding-left var(--dur) var(--ease);
}
.toc li:last-child .toc__link{border-bottom:0}
.toc__link:hover{color:var(--dawn);padding-left:4px}
.toc__link b{font-family:Inter,system-ui,sans-serif;font-size:12px;color:var(--mist);font-weight:600}
.contact-card{
  background:var(--ink);color:#DCE7E3;border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-2);
}
.contact-card h3{font-size:17px;color:#fff;font-weight:700;margin-bottom:10px}
.contact-card p{font-size:14px;color:#B9CCC6;margin-bottom:18px}
.contact-card .btn{width:100%}
.contact-card__meta{font-size:12px;color:#93AAA3;margin-top:14px}

/* ============ CTA ============ */
.cta-band{background:var(--ink-2);color:#DCE7E3;padding:88px 0}
.cta-band__inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(24px,2.8vw,34px);line-height:1.24;color:#fff;font-weight:700;margin-bottom:12px;max-width:640px}
.cta-band p{font-size:15px;color:#A9BEB7;max-width:620px}
.cta-band .btn--dawn{padding:14px 28px;font-size:16px}

/* ============ 页脚 ============ */
.site-footer{background:#0B1B18;color:#9FB4AD;padding:72px 0 0;font-size:14px}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.10)}
.footer__brand .logo__text{color:#fff}
.footer__brand p{margin-top:16px;color:#8FA59E;max-width:320px;font-size:14px}
.footer__title{font-size:13px;font-weight:700;color:#fff;letter-spacing:.06em;margin-bottom:16px}
.footer__links li{margin-bottom:10px}
.footer__links a{color:#9FB4AD;transition:color var(--dur) var(--ease)}
.footer__links a:hover{color:#fff}
.footer__bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:22px 0 28px;font-size:13px;color:#7E938C}
.footer__bottom a{color:#9FB4AD}
.footer__bottom a:hover{color:#fff}

/* ============ 移动端固定条 ============ */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:120;
  background:rgba(15,33,30,.97);border-top:1px solid rgba(255,255,255,.12);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  align-items:center;justify-content:space-between;gap:14px;
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.mobile-bar span{color:#CFDCD8;font-size:13px;line-height:1.4}
.mobile-bar.is-hidden{opacity:0;transform:translateY(100%);pointer-events:none}
.mobile-bar .btn{padding:9px 16px;font-size:14px;flex:none}

/* ============ 入场动画 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 480ms var(--ease),transform 480ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero-grid{grid-template-columns:minmax(0,1fr) 360px;gap:40px}
  .doc-grid{gap:44px}
}
@media (max-width:1023px){
  .nav__list,.nav__actions .nav__cta{display:none}
  .burger{display:grid}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{max-width:560px}
  .doc-grid{grid-template-columns:1fr;gap:40px}
  .doc-side{position:static;grid-template-columns:1fr 1fr;display:grid}
  .doc-section{padding:72px 0}
  .cta-band{padding:72px 0}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .topbar__note{font-size:12px}
  .topbar__link{display:none}
  .page-hero{padding:32px 0 48px}
  .hero-lead{font-size:16px}
  .hero-actions{gap:16px}
  .doc-section{padding:56px 0}
  .doc-side{grid-template-columns:1fr}
  .cta-band{padding:56px 0}
  .cta-band__inner{flex-direction:column;align-items:flex-start}
  .cta-band .btn--dawn{width:100%}
  .footer__grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .mobile-bar{display:flex}
  body{padding-bottom:0}
  .site-footer{padding-bottom:76px}
}
@media (max-width:400px){
  .logo__text{font-size:15px}
  .chip{font-size:11px;padding:5px 11px}
  .hero-media__tag{font-size:12px;padding:7px 12px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink:#1C3A34;
  --ink-deep:#0F211E;
  --mist:#7C9A93;
  --dawn:#E2663C;
  --dawn-deep:#C9532C;
  --paper:#F6F5F1;
  --paper-soft:#EDECE6;
  --text:#17211F;
  --text-soft:#5A6A66;
  --line:#E2E1DA;
  --white:#FFFFFF;
  --radius-card:14px;
  --radius-btn:8px;
  --radius-img:12px;
  --radius-pill:999px;
  --sh-1:0 1px 2px rgba(16,33,30,.05);
  --sh-2:0 10px 28px rgba(16,33,30,.10);
  --sh-3:0 20px 48px rgba(16,33,30,.14);
  --s4:4px; --s8:8px; --s12:12px; --s16:16px; --s24:24px; --s32:32px; --s48:48px; --s64:64px; --s96:96px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --tr:240ms var(--ease);
  --font:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:110px}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.78;
  color:var(--text);
  background:var(--paper);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea{font-family:inherit;font-size:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--dawn);outline-offset:2px;border-radius:4px}
::selection{background:rgba(226,102,60,.18)}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}

/* ============ 顶部公告条 ============ */
.topbar{background:var(--ink-deep);color:rgba(255,255,255,.82);font-size:13px}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;padding:6px 0}
.topbar__note{display:flex;align-items:center;gap:10px;letter-spacing:.01em}
.topbar__dot{width:6px;height:6px;border-radius:50%;background:var(--dawn);flex:none}
.topbar__link{color:rgba(255,255,255,.9);border-bottom:1px solid rgba(255,255,255,.28);padding-bottom:1px;transition:var(--tr)}
.topbar__link:hover{color:#fff;border-color:var(--dawn)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,245,241,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color var(--tr),box-shadow var(--tr),background var(--tr);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 20px rgba(16,33,30,.06);background:rgba(246,245,241,.98)}
.nav{display:flex;align-items:center;gap:28px;height:72px}
.logo{display:flex;align-items:center;gap:12px;flex:none}
.logo__mark{width:26px;height:26px;border-radius:7px;background:var(--ink);position:relative;flex:none;overflow:hidden}
.logo__mark::before{content:"";position:absolute;left:-6px;bottom:-9px;width:34px;height:22px;border-radius:50% 50% 0 0;background:var(--mist);opacity:.9}
.logo__mark::after{content:"";position:absolute;right:3px;top:4px;width:7px;height:7px;border-radius:50%;background:var(--dawn)}
.logo__text{font-size:19px;font-weight:700;letter-spacing:-.01em;color:var(--ink);white-space:nowrap}
.nav__list{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav__item{position:relative}
.nav__link{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;font-size:15px;color:var(--text-soft);
  border-radius:6px;position:relative;transition:var(--tr);white-space:nowrap;
}
.nav__link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--dawn);transform:scaleX(0);transform-origin:left;transition:transform var(--tr);
}
.nav__link:hover{color:var(--ink);background:rgba(28,58,52,.05)}
.nav__link:hover::after,.nav__link.is-active::after{transform:scaleX(1)}
.nav__link.is-active{color:var(--ink);font-weight:600}
.nav__caret{width:7px;height:7px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px);opacity:.6}
.nav__actions{display:flex;align-items:center;gap:14px;flex:none}

/* Mega 面板 */
.has-mega::after{content:"";position:absolute;left:-20px;right:-20px;top:100%;height:22px}
.mega{
  position:absolute;top:calc(100% + 16px);right:-60px;width:600px;
  display:grid;grid-template-columns:1.1fr 1fr;gap:28px;
  padding:26px;background:var(--white);border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--sh-3);
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity var(--tr),transform var(--tr),visibility var(--tr);
}
.has-mega:hover .mega,.has-mega:focus-within .mega,.has-mega.is-open .mega{opacity:1;visibility:visible;transform:translateY(0)}
.mega__title{font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--mist);text-transform:uppercase;margin-bottom:12px}
.mega__list li+li{margin-top:2px}
.mega__link{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 10px;border-radius:8px;font-size:14.5px;color:var(--text);transition:var(--tr)}
.mega__link i{font-style:normal;color:var(--mist);transition:var(--tr)}
.mega__link:hover{background:var(--paper);color:var(--ink)}
.mega__link:hover i{color:var(--dawn);transform:translateX(3px)}
.mega__news li{padding:9px 0;border-bottom:1px solid var(--line)}
.mega__news li:last-child{border-bottom:0}
.mega__news a{display:block;font-size:14px;color:var(--text);line-height:1.5;transition:var(--tr)}
.mega__news a:hover{color:var(--dawn)}
.mega__news time{display:block;font-family:var(--font-num);font-size:12px;color:var(--mist);margin-top:3px}

/* 汉堡与抽屉 */
.burger{display:none;width:42px;height:42px;border-radius:8px;border:1px solid var(--line);background:var(--white);flex-direction:column;align-items:center;justify-content:center;gap:5px;transition:var(--tr)}
.burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:var(--tr)}
.burger:hover{border-color:var(--mist)}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer{
  position:fixed;inset:0;z-index:120;background:var(--paper);
  padding:24px;display:flex;flex-direction:column;gap:8px;
  transform:translateY(-100%);opacity:0;visibility:hidden;transition:transform 320ms var(--ease),opacity 240ms var(--ease),visibility 320ms;
  overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);opacity:1;visibility:visible}
.drawer__head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer__close{position:absolute;top:20px;right:20px;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:var(--white);font-size:18px;line-height:1;color:var(--ink)}
.drawer__group{padding:18px 0;border-bottom:1px solid var(--line)}
.drawer__label{font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--mist);margin-bottom:12px}
.drawer__link{display:block;padding:12px 0;font-size:19px;font-weight:600;color:var(--ink)}
.drawer__link.is-active{color:var(--dawn)}
.drawer__sub{display:block;padding:9px 0;font-size:15px;color:var(--text-soft)}
.drawer__cta{margin-top:auto;padding-top:24px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;transition:var(--tr);white-space:nowrap;
}
.btn--primary{background:var(--ink);color:#F2F1EC;box-shadow:var(--sh-1)}
.btn--primary:hover{background:#173029;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn--ghost:hover{background:var(--ink);border-color:var(--ink);color:#F2F1EC}
.btn--dawn{background:var(--dawn);color:#fff}
.btn--dawn:hover{background:var(--dawn-deep)}
.btn--block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:7px;font-size:15px;font-weight:600;color:var(--ink);
  position:relative;padding-bottom:3px;
}
.link-arrow::before{content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--dawn);transition:width var(--tr)}
.link-arrow::after{content:"→";color:var(--dawn);transition:transform var(--tr)}
.link-arrow:hover::before{width:calc(100% - 20px)}
.link-arrow:hover::after{transform:translateX(3px)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--radius-pill);
  background:rgba(28,58,52,.07);color:var(--ink);
  font-size:12px;font-weight:500;letter-spacing:.02em;
}
.badge--dawn{background:rgba(226,102,60,.12);color:var(--dawn-deep)}

/* ============ 面包屑 ============ */
.crumb{padding:28px 0 0}
.crumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-soft)}
.crumb__list li{display:flex;align-items:center;gap:8px}
.crumb__list li+li::before{content:"/";color:var(--line)}
.crumb__list a{transition:var(--tr)}
.crumb__list a:hover{color:var(--dawn)}
.crumb__now{color:var(--mist);max-width:min(560px,60vw);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头部 ============ */
.article-hero{padding:34px 0 40px;border-bottom:1px solid var(--line)}
.article-hero__label{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.article-hero h1{
  font-size:clamp(30px,4.4vw,50px);line-height:1.16;font-weight:700;letter-spacing:-.02em;
  color:var(--ink);max-width:900px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;margin-top:22px;font-size:13.5px;color:var(--text-soft)}
.article-meta__item{display:inline-flex;align-items:center;gap:7px}
.article-meta__item svg{width:15px;height:15px;stroke:var(--mist);fill:none;stroke-width:1.6}
.article-meta__sep{width:1px;height:13px;background:var(--line)}
.article-cover{margin-top:32px;border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);background:var(--paper-soft);position:relative}
.article-cover img{width:100%;aspect-ratio:16/7;object-fit:cover}
.article-cover__tag{
  position:absolute;left:16px;top:16px;background:rgba(15,33,30,.82);color:#fff;
  font-size:12px;padding:5px 12px;border-radius:var(--radius-pill);backdrop-filter:blur(4px);
}

/* ============ 正文布局 ============ */
.article-main{padding:56px 0 88px}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:64px;align-items:start}
.article-body{max-width:780px;font-size:16.5px;line-height:1.82;color:#1E2A28}
.article-body>*+*{margin-top:20px}
.article-body h2{
  position:relative;margin-top:52px;padding-top:22px;
  font-size:clamp(22px,2.4vw,29px);line-height:1.3;font-weight:700;color:var(--ink);letter-spacing:-.01em;
}
.article-body h2::before{content:"";position:absolute;left:0;top:0;width:100%;height:1px;background:var(--line)}
.article-body h2::after{content:"";position:absolute;left:0;top:0;width:44px;height:3px;background:var(--dawn)}
.article-body h3{position:relative;margin-top:34px;padding-left:16px;font-size:20px;line-height:1.4;font-weight:600;color:var(--ink)}
.article-body h3::before{content:"";position:absolute;left:0;top:6px;bottom:4px;width:3px;border-radius:2px;background:var(--dawn)}
.article-body h4{margin-top:26px;font-size:17px;font-weight:600;color:var(--ink)}
.article-body p{color:#26302E}
.article-body a{color:var(--ink);border-bottom:1px solid rgba(226,102,60,.5);transition:var(--tr)}
.article-body a:hover{color:var(--dawn);border-color:var(--dawn)}
.article-body ul,.article-body ol{padding-left:4px}
.article-body ul li,.article-body ol li{position:relative;padding-left:24px;margin-top:10px;color:#26302E}
.article-body ul li::before{content:"";position:absolute;left:4px;top:12px;width:7px;height:7px;border-radius:50%;background:var(--mist)}
.article-body ol{counter-reset:listc}
.article-body ol li{counter-increment:listc}
.article-body ol li::before{
  content:counter(listc,decimal-leading-zero);
  position:absolute;left:0;top:3px;font-family:var(--font-num);font-size:13px;font-weight:600;color:var(--dawn);
}
.article-body blockquote{
  margin-top:28px;padding:20px 24px;border-left:3px solid var(--dawn);
  background:rgba(226,102,60,.05);border-radius:0 10px 10px 0;color:var(--ink);
}
.article-body blockquote p{color:var(--ink);font-size:16px}
.article-body img{border-radius:var(--radius-img);border:1px solid var(--line)}
.article-body figure{margin-top:28px}
.article-body figcaption{margin-top:10px;font-size:13px;color:var(--mist);text-align:center}
.article-body table{width:100%;border-collapse:collapse;margin-top:26px;font-size:14.5px}
.article-body th,.article-body td{padding:12px 14px;border:1px solid var(--line);text-align:left;vertical-align:top}
.article-body th{background:rgba(28,58,52,.05);font-weight:600;color:var(--ink)}
.article-body pre{background:var(--paper-soft);border:1px solid var(--line);border-radius:10px;padding:18px;overflow-x:auto;font-size:13.5px;line-height:1.7}
.article-body code{font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;font-size:.92em}
.article-body p code,.article-body li code{background:var(--paper-soft);padding:2px 6px;border-radius:5px}
.article-body hr{border:0;border-top:1px solid var(--line);margin:40px 0}

/* 空态 */
.empty{
  border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:72px 24px;text-align:center;background:var(--white);
}
.empty__icon{width:52px;height:52px;margin:0 auto 18px;border-radius:50%;border:2px solid rgba(226,102,60,.35);position:relative}
.empty__icon::before,.empty__icon::after{content:"";position:absolute;background:var(--dawn);opacity:.6}
.empty__icon::before{left:50%;top:14px;width:2px;height:16px;transform:translateX(-50%)}
.empty__icon::after{left:50%;bottom:14px;width:8px;height:2px;transform:translateX(-50%)}
.empty h2{font-size:22px;font-weight:700;color:var(--ink);border:0;padding:0;margin:0}
.empty h2::before,.empty h2::after{display:none}
.empty p{margin-top:10px;color:var(--text-soft);font-size:15px}
.empty .btn{margin-top:24px}

/* ============ 侧栏 ============ */
.sidebar{position:sticky;top:104px;display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;box-shadow:var(--sh-1)}
.side-card__title{display:flex;align-items:center;justify-content:space-between;font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--mist);margin-bottom:14px}
.toc__list li+li{margin-top:2px}
.toc__link{display:block;padding:7px 10px;border-left:2px solid var(--line);font-size:14px;color:var(--text-soft);line-height:1.5;transition:var(--tr)}
.toc__link:hover{color:var(--ink);background:var(--paper)}
.toc__link.is-current{border-left-color:var(--dawn);color:var(--ink);font-weight:600;background:var(--paper)}
.toc__link--sub{padding-left:22px;font-size:13.5px}
.side-card--ink{background:var(--ink);border-color:var(--ink);color:rgba(255,255,255,.86)}
.side-card--ink .side-card__title{color:rgba(255,255,255,.55)}
.side-card--ink h3{font-size:18px;font-weight:700;color:#fff;margin-bottom:10px}
.side-card--ink p{font-size:14px;line-height:1.7;color:rgba(255,255,255,.78)}
.side-card--ink .btn{margin-top:18px;background:var(--dawn);color:#fff}
.side-card--ink .btn:hover{background:var(--dawn-deep)}
.side-list li+li{margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}
.side-list a{display:block;font-size:14.5px;line-height:1.6;color:var(--text);transition:var(--tr)}
.side-list a:hover{color:var(--dawn)}
.side-list time{display:block;font-family:var(--font-num);font-size:12px;color:var(--mist);margin-top:4px}

/* ============ 文末区 ============ */
.article-foot{margin-top:64px;padding-top:40px;border-top:1px solid var(--line)}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.tag-row__label{font-size:13px;color:var(--mist);margin-right:4px}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:var(--white);font-size:13px;color:var(--text-soft);
  transition:var(--tr);
}
.tag:hover{border-color:var(--ink);color:var(--ink);background:var(--paper)}
.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:26px}
.share-row__label{font-size:13px;color:var(--mist);margin-right:4px}
.share-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:var(--white);
  display:inline-flex;align-items:center;justify-content:center;transition:var(--tr);
}
.share-btn svg{width:17px;height:17px;stroke:var(--ink);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.share-btn:hover{border-color:var(--ink);background:var(--ink);transform:translateY(-2px)}
.share-btn:hover svg{stroke:#fff}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:40px}
.pager a{
  display:block;padding:22px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--white);transition:var(--tr);
}
.pager a:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--mist)}
.pager__dir{font-size:12px;letter-spacing:.08em;color:var(--mist);margin-bottom:8px}
.pager__title{font-size:16px;font-weight:600;color:var(--ink);line-height:1.5}
.pager--next{text-align:right}
.related{margin-top:64px}
.related__head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}
.related__head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--ink);letter-spacing:-.01em}
.related__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rcard{
  display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--sh-1);transition:var(--tr);
}
.rcard:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.rcard__media{aspect-ratio:16/9;overflow:hidden;background:var(--paper-soft)}
.rcard__media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.rcard:hover .rcard__media img{transform:scale(1.04)}
.rcard__body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rcard__title{font-size:16px;font-weight:600;line-height:1.5;color:var(--ink)}
.rcard__desc{font-size:14px;color:var(--text-soft);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rcard__foot{margin-top:auto;font-size:13px;color:var(--dawn-deep);display:inline-flex;align-items:center;gap:6px}
.toc-mobile{display:none;margin-top:40px}
.toc-mobile .side-card{padding:18px 20px}
.back-col{margin-top:36px;text-align:center}

/* ============ 深色 CTA ============ */
.cta-band{background:var(--ink-deep);color:#fff;padding:88px 0}
.cta-band__inner{display:flex;align-items:center;justify-content:space-between;gap:40px}
.cta-band h2{font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.25;letter-spacing:-.01em;max-width:640px}
.cta-band p{margin-top:14px;color:rgba(255,255,255,.72);font-size:15px;max-width:560px}
.cta-band__actions{display:flex;gap:14px;flex:none}
.cta-band .btn--primary{background:var(--dawn);color:#fff}
.cta-band .btn--primary:hover{background:var(--dawn-deep)}
.cta-band .btn--ghost{border-color:rgba(255,255,255,.28);color:#fff}
.cta-band .btn--ghost:hover{background:#fff;color:var(--ink);border-color:#fff}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 0;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:56px}
.footer-brand .logo__text{color:#fff}
.footer-brand p{margin-top:18px;line-height:1.8;color:rgba(255,255,255,.66);max-width:330px;font-size:14px}
.footer-col h3{font-size:13px;font-weight:600;letter-spacing:.08em;color:rgba(255,255,255,.5);margin-bottom:18px}
.footer-col li+li{margin-top:10px}
.footer-col a{color:rgba(255,255,255,.78);transition:var(--tr)}
.footer-col a:hover{color:#fff;padding-left:4px}
.footer-col address{font-style:normal;line-height:1.9;color:rgba(255,255,255,.72);font-size:14px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.7)}
.footer-bottom a:hover{color:#fff}

/* ============ 移动端底栏 ============ */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:rgba(15,33,30,.96);backdrop-filter:blur(8px);color:#fff;
  padding:10px 20px calc(10px + env(safe-area-inset-bottom));
  align-items:center;justify-content:space-between;gap:14px;
  transition:opacity var(--tr),transform var(--tr);
}
.mobile-bar.is-hidden{opacity:0;transform:translateY(100%)}
.mobile-bar__text{font-size:14px;color:rgba(255,255,255,.8)}
.mobile-bar__actions{display:flex;gap:10px}
.mobile-bar .btn{padding:10px 16px;font-size:14px}
.mobile-bar .btn--primary{background:var(--dawn)}
.mobile-bar .btn--ghost{border-color:rgba(255,255,255,.3);color:#fff}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .mega{right:-20px;width:560px}
}
@media (max-width:1023px){
  .nav__list{display:none}
  .nav__cta{display:none}
  .burger{display:flex}
  .nav{height:66px}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:0}
  .sidebar{display:none}
  .toc-mobile{display:block}
  .related__grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .article-main{padding:44px 0 72px}
  .cta-band{padding:72px 0}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .topbar__inner{font-size:12px}
  .topbar__note span:not(.topbar__dot){display:none}
  .article-hero{padding:24px 0 32px}
  .article-hero h1{font-size:clamp(28px,7.4vw,36px)}
  .article-cover img{aspect-ratio:16/10}
  .article-body{font-size:16px}
  .article-body h2{margin-top:40px}
  .pager{grid-template-columns:1fr}
  .pager--next{text-align:left}
  .related__grid{grid-template-columns:1fr}
  .cta-band__inner{flex-direction:column;align-items:flex-start;gap:26px}
  .cta-band__actions{width:100%;flex-direction:column}
  .cta-band__actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:40px}
  .mobile-bar{display:flex}
  .site-footer{padding-bottom:64px}
  .article-main{padding:36px 0 64px}
}
@media (max-width:520px){
  .article-meta{gap:8px 14px;font-size:13px}
  .article-meta__sep{display:none}
  .empty{padding:48px 18px}
  .side-card{padding:18px}
  .crumb__now{max-width:52vw}
}

/* roulang page: category3 */
:root{
  --ink:#1C3A34;
  --ink-2:#0F211E;
  --mist:#7C9A93;
  --dawn:#E2663C;
  --bg:#F6F5F1;
  --body:#17211F;
  --muted:#5A6A66;
  --line:#E2E1DA;
  --skeleton:#EDECE6;
  --r-card:14px;
  --r-btn:8px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(16,33,30,.05);
  --sh-2:0 10px 28px rgba(16,33,30,.10);
  --sh-3:0 20px 48px rgba(16,33,30,.14);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:260ms;
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.78;
  color:var(--body);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--dawn);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(226,102,60,.22);}

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

/* ---------- top bar ---------- */
.topbar{background:var(--ink-2);color:#CFDAD7;font-size:13px;}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;}
.topbar p{line-height:1.5;padding:6px 0;}
.topbar a{color:#F2EDE6;border-bottom:1px solid rgba(226,102,60,.6);transition:color var(--t) var(--ease),border-color var(--t) var(--ease);}
.topbar a:hover{color:#fff;border-color:#fff;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,245,241,.94);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.site-header.is-stuck{border-bottom-color:var(--line);box-shadow:0 2px 14px rgba(16,33,30,.06);}
.nav{display:flex;align-items:center;gap:var(--sp-6);min-height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo__mark{
  width:28px;height:28px;border-radius:8px;
  background:linear-gradient(140deg,var(--ink) 0%,var(--mist) 100%);
  position:relative;
}
.logo__mark::after{
  content:"";position:absolute;left:6px;top:6px;width:16px;height:16px;
  border:1.5px solid rgba(246,245,241,.85);border-radius:50% 50% 50% 0;
  transform:rotate(-45deg);
}
.logo__text{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--ink);white-space:nowrap;}
.nav__list{display:flex;align-items:center;gap:var(--sp-5);margin-left:auto;}
.nav__item{position:relative;}
.nav__link{
  display:inline-flex;align-items:center;gap:6px;
  padding:22px 2px;font-size:15px;color:var(--body);
  position:relative;transition:color var(--t) var(--ease);
}
.nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:16px;height:2px;
  background:var(--dawn);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t) var(--ease);
}
.nav__link:hover{color:var(--ink);}
.nav__link:hover::after,.nav__link.is-active::after{transform:scaleX(1);}
.nav__link.is-active{color:var(--ink);font-weight:600;}
.nav__caret{width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform var(--t) var(--ease);}
.has-mega:hover .nav__caret{transform:rotate(225deg) translateY(-1px);}
.nav__actions{display:flex;align-items:center;gap:var(--sp-4);flex:0 0 auto;}

.mega{
  position:absolute;top:calc(100% - 6px);left:50%;transform:translate(-50%,8px);
  width:600px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-3);padding:var(--sp-5) var(--sp-5) var(--sp-5);
  display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-5);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity var(--t) var(--ease),transform var(--t) var(--ease),visibility var(--t) var(--ease);
  z-index:70;
}
.mega::before{content:"";position:absolute;top:-14px;left:0;right:0;height:14px;}
.has-mega:hover .mega,.has-mega:focus-within .mega{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0);}
.mega__title{font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--mist);text-transform:uppercase;margin-bottom:var(--sp-3);}
.mega__list li + li{margin-top:2px;}
.mega__link{
  display:flex;align-items:center;justify-content:space-between;
  padding:8px 10px;border-radius:8px;font-size:14px;
  transition:background var(--t) var(--ease),color var(--t) var(--ease);
}
.mega__link i{font-style:normal;color:var(--dawn);opacity:0;transform:translateX(-4px);transition:all var(--t) var(--ease);}
.mega__link:hover{background:#F3F1EC;color:var(--ink);}
.mega__link:hover i{opacity:1;transform:translateX(0);}
.mega__news li{display:flex;flex-direction:column;gap:2px;padding:8px 0;border-bottom:1px solid var(--line);}
.mega__news li:last-child{border-bottom:0;}
.mega__news a{font-size:14px;line-height:1.5;transition:color var(--t) var(--ease);}
.mega__news a:hover{color:var(--dawn);}
.mega__news time{font-size:12px;color:var(--muted);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease),transform var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.btn--primary{background:var(--ink);color:#F6F5F1;box-shadow:var(--sh-1);}
.btn--primary:hover{background:#152F29;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn--ghost:hover{background:var(--ink);color:#F6F5F1;border-color:var(--ink);}
.btn--light{background:#F6F5F1;color:var(--ink-2);}
.btn--light:hover{background:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--sm{padding:9px 16px;font-size:14px;}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--ink);
  position:relative;padding-bottom:2px;
}
.link-arrow::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;
  background:currentColor;transform:scaleX(0);transform-origin:left;
  transition:transform var(--t) var(--ease);
}
.link-arrow:hover::after{transform:scaleX(1);}
.link-arrow span{transition:transform var(--t) var(--ease);}
.link-arrow:hover span{transform:translateX(3px);}

/* ---------- burger + drawer ---------- */
.burger{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:8px;
  background:transparent;cursor:pointer;padding:0;place-items:center;gap:0;
}
.burger span{display:block;width:18px;height:1.6px;background:var(--ink);margin:3px auto;transition:transform var(--t) var(--ease),opacity var(--t) var(--ease);}
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--bg);
  padding:24px 20px 40px;overflow-y:auto;
  transform:translateY(-12px);opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity var(--t) var(--ease),transform var(--t) var(--ease),visibility var(--t) var(--ease);
}
.drawer.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0);}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--sp-6);}
.drawer__close{width:42px;height:42px;border-radius:8px;border:1px solid var(--line);background:transparent;font-size:20px;line-height:1;cursor:pointer;color:var(--ink);}
.drawer__group{margin-bottom:var(--sp-6);}
.drawer__label{font-size:12px;letter-spacing:.1em;color:var(--mist);margin-bottom:var(--sp-3);text-transform:uppercase;}
.drawer__link{display:block;font-size:20px;font-weight:600;color:var(--ink);padding:12px 0;border-bottom:1px solid var(--line);}
.drawer__sub{display:block;font-size:15px;color:var(--body);padding:10px 0;border-bottom:1px solid var(--line);}

/* ---------- breadcrumb ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);padding-top:var(--sp-6);}
.crumb a{transition:color var(--t) var(--ease);}
.crumb a:hover{color:var(--dawn);}
.crumb em{font-style:normal;color:var(--mist);}
.crumb strong{font-weight:500;color:var(--ink);}

/* ---------- hero ---------- */
.hero{padding:var(--sp-7) 0 var(--sp-8);}
.hero__grid{display:grid;grid-template-columns:1.08fr .92fr;gap:var(--sp-7);align-items:center;}
.hero__eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:600;letter-spacing:.14em;
  color:var(--mist);text-transform:uppercase;margin-bottom:var(--sp-4);
}
.hero__eyebrow::before{content:"";width:34px;height:1px;background:var(--dawn);}
.hero h1{font-size:clamp(34px,5.2vw,58px);line-height:1.12;font-weight:700;letter-spacing:-.02em;color:var(--ink);}
.hero h1 mark{background:none;color:var(--dawn);}
.hero__lead{margin-top:var(--sp-5);font-size:17px;color:var(--muted);max-width:56ch;}
.hero__lead strong{color:var(--body);font-weight:600;}
.hero__actions{display:flex;flex-wrap:wrap;align-items:center;gap:var(--sp-5);margin-top:var(--sp-6);}
.hero__facts{display:flex;flex-wrap:wrap;gap:var(--sp-5);margin-top:var(--sp-6);padding-top:var(--sp-5);border-top:1px solid var(--line);}
.hero__facts li{font-size:14px;color:var(--muted);padding-left:14px;position:relative;}
.hero__facts li::before{content:"";position:absolute;left:0;top:9px;width:2px;height:14px;background:var(--dawn);}
.hero__figure{position:relative;}
.hero__figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--line);box-shadow:var(--sh-2);
}
.hero__figure::before{
  content:"";position:absolute;left:-12px;top:-12px;width:56px;height:56px;
  background:var(--dawn);border-radius:6px;opacity:.9;z-index:-1;
}

/* ---------- sections ---------- */
.section{padding:var(--sp-9) 0;}
.section--tight{padding:var(--sp-8) 0;}
.section--alt{background:#F1EFE9;}
.section--dark{background:var(--ink-2);color:#D9E2DF;}
.section__head{max-width:720px;margin-bottom:var(--sp-7);}
.section__label{font-size:12px;font-weight:600;letter-spacing:.16em;color:var(--mist);text-transform:uppercase;margin-bottom:var(--sp-3);}
.section__head h2{font-size:clamp(26px,3.4vw,40px);line-height:1.2;font-weight:700;letter-spacing:-.015em;color:var(--ink);}
.section--dark .section__head h2{color:#F6F5F1;}
.section__head p{margin-top:var(--sp-4);color:var(--muted);font-size:16px;}
.section--dark .section__head p{color:#9FB3AE;}
.rule{width:48px;height:3px;background:var(--dawn);border-radius:2px;margin-bottom:var(--sp-4);}

/* ---------- stat band ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);}
.stat{padding:var(--sp-6) var(--sp-5);border-left:1px solid rgba(124,154,147,.32);}
.stat:first-child{border-left:0;padding-left:0;}
.stat b{display:block;font-family:Inter,system-ui,sans-serif;font-size:clamp(30px,3.6vw,44px);line-height:1.1;font-weight:700;color:#F6F5F1;letter-spacing:-.02em;}
.stat span{display:block;margin-top:var(--sp-2);font-size:14px;color:#9FB3AE;}

/* ---------- card grid 3x2 ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--sp-5);}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:var(--sp-6) var(--sp-5) var(--sp-5);
  box-shadow:var(--sh-1);position:relative;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D6D4CB;}
.card__icon{
  width:46px;height:46px;border-radius:12px;background:#EFF1EC;
  display:grid;place-items:center;margin-bottom:var(--sp-5);
  border:1px solid var(--line);
}
.card__icon svg{width:22px;height:22px;stroke:var(--ink);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.card__no{
  position:absolute;right:var(--sp-5);top:var(--sp-5);
  font-family:Inter,system-ui,sans-serif;font-size:13px;font-weight:600;color:var(--mist);letter-spacing:.06em;
}
.card h3{font-size:19px;font-weight:600;line-height:1.35;color:var(--ink);}
.card p{margin-top:var(--sp-3);font-size:15px;color:var(--muted);}
.card__tag{
  display:inline-block;margin-top:var(--sp-4);padding:4px 10px;border-radius:999px;
  background:#F3EFE7;color:#8A5A3F;font-size:12px;font-weight:500;
}

/* ---------- flow steps ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:var(--sp-6);}
.flow__step{padding:0 var(--sp-5) 0 0;position:relative;}
.flow__step + .flow__step{padding-left:var(--sp-5);border-left:1px solid var(--line);}
.flow__num{
  font-family:Inter,system-ui,sans-serif;font-size:13px;font-weight:700;letter-spacing:.1em;
  color:var(--dawn);margin-bottom:var(--sp-3);
}
.flow__step h3{font-size:17px;font-weight:600;color:var(--ink);}
.flow__step p{margin-top:var(--sp-3);font-size:14.5px;color:var(--muted);}

/* ---------- figure band ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-7);align-items:center;}
.split img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line);box-shadow:var(--sh-1);}
.split h2{font-size:clamp(24px,3vw,34px);line-height:1.22;font-weight:700;color:var(--ink);letter-spacing:-.015em;}
.split p{margin-top:var(--sp-4);color:var(--muted);}
.checklist{margin-top:var(--sp-5);}
.checklist li{
  display:flex;gap:12px;padding:12px 0;border-top:1px solid var(--line);font-size:15px;color:var(--body);
}
.checklist li:last-child{border-bottom:1px solid var(--line);}
.checklist em{font-style:normal;color:var(--dawn);font-weight:700;flex:0 0 auto;font-family:Inter,system-ui,sans-serif;font-size:14px;}

/* ---------- faq ---------- */
.faq{max-width:880px;}
.faq__item{border-top:1px solid var(--line);}
.faq__item:last-child{border-bottom:1px solid var(--line);}
.faq__q{
  width:100%;background:none;border:0;cursor:pointer;text-align:left;
  display:flex;align-items:flex-start;justify-content:space-between;gap:var(--sp-5);
  padding:22px 0;font-size:17px;font-weight:600;color:var(--ink);
  transition:color var(--t) var(--ease);
}
.faq__q:hover{color:var(--dawn);}
.faq__sign{
  flex:0 0 auto;width:22px;height:22px;position:relative;margin-top:4px;
}
.faq__sign::before,.faq__sign::after{
  content:"";position:absolute;background:var(--mist);transition:transform var(--t) var(--ease),background var(--t) var(--ease);
}
.faq__sign::before{left:0;top:10px;width:22px;height:1.6px;}
.faq__sign::after{left:10px;top:0;width:1.6px;height:22px;}
.faq__item.is-open .faq__sign::after{transform:scaleY(0);}
.faq__item.is-open .faq__sign::before{background:var(--dawn);}
.faq__a{
  max-height:0;overflow:hidden;
  transition:max-height 240ms var(--ease);
}
.faq__a p{padding:0 40px var(--sp-5) var(--sp-5);color:var(--muted);font-size:15.5px;}

/* ---------- cta ---------- */
.cta{background:var(--ink-2);color:#E7EDEB;}
.cta__inner{
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-7);
  padding:88px 0;
}
.cta h2{font-size:clamp(24px,3.2vw,36px);line-height:1.24;font-weight:700;color:#F6F5F1;letter-spacing:-.015em;max-width:22ch;}
.cta p{margin-top:var(--sp-4);color:#9FB3AE;max-width:46ch;}

/* ---------- footer ---------- */
.site-footer{background:#0B1917;color:#9FB3AE;padding:var(--sp-8) 0 var(--sp-5);}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:var(--sp-6);}
.footer__brand .logo__text{color:#F6F5F1;}
.footer__brand p{margin-top:var(--sp-4);font-size:14px;line-height:1.8;max-width:36ch;}
.footer h4{font-size:14px;font-weight:600;color:#F6F5F1;margin-bottom:var(--sp-4);letter-spacing:.02em;}
.footer__list li{margin-bottom:10px;}
.footer__list a,.footer__list span{font-size:14px;transition:color var(--t) var(--ease);}
.footer__list a:hover{color:var(--dawn);}
.footer__quote{
  margin-top:var(--sp-5);padding:12px 0 12px 14px;border-left:3px solid var(--dawn);
  font-size:13.5px;color:#B9C7C3;
}
.footer__quote strong{display:block;color:#F6F5F1;font-size:14px;font-weight:600;}
.footer__bottom{
  margin-top:var(--sp-7);padding-top:var(--sp-5);border-top:1px solid rgba(124,154,147,.22);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:var(--sp-4);font-size:13px;
}
.footer__bottom a{border-bottom:1px solid rgba(124,154,147,.4);transition:color var(--t) var(--ease);}
.footer__bottom a:hover{color:#F6F5F1;}

/* ---------- mobile bar ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:80;
  background:rgba(15,33,30,.97);color:#F6F5F1;
  padding:10px 20px calc(10px + env(safe-area-inset-bottom));
  align-items:center;justify-content:space-between;gap:16px;min-height:60px;
  transition:opacity var(--t) var(--ease),transform var(--t) var(--ease);
}
.mobile-bar.is-hidden{opacity:0;transform:translateY(100%);pointer-events:none;}
.mobile-bar span{font-size:13.5px;color:#C6D3CF;}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 520ms var(--ease),transform 520ms var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .nav__list{gap:var(--sp-4);}
  .nav__link{font-size:14px;}
  .mega{width:560px;}
}
@media (max-width:1023px){
  .nav__list{display:none;}
  .burger{display:grid;}
  .nav__cta{display:none;}
  .nav{gap:var(--sp-4);}
  .hero__grid{grid-template-columns:1fr;gap:var(--sp-6);}
  .hero{padding:var(--sp-6) 0 var(--sp-7);}
  .section,.section--tight{padding:72px 0;}
  .cards{grid-template-columns:repeat(2,1fr);}
  .flow{grid-template-columns:repeat(2,1fr);gap:var(--sp-6) 0;}
  .flow__step:nth-child(3){padding-left:0;border-left:0;}
  .split{grid-template-columns:1fr;gap:var(--sp-6);}
  .stats{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(3){border-left:0;padding-left:0;}
  .footer__grid{grid-template-columns:1fr 1fr;gap:var(--sp-6);}
  .cta__inner{flex-direction:column;align-items:flex-start;padding:64px 0;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .hero h1{font-size:34px;}
  .cards{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;gap:0;}
  .flow__step{padding:var(--sp-5) 0;border-left:0;}
  .flow__step + .flow__step{padding-left:0;border-left:0;border-top:1px solid var(--line);}
  .stats{grid-template-columns:1fr;}
  .stat{border-left:0;padding:var(--sp-5) 0;border-top:1px solid rgba(124,154,147,.22);}
  .stat:first-child{border-top:0;padding-top:0;}
  .footer__grid{grid-template-columns:1fr;}
  .faq__a p{padding-left:0;padding-right:0;}
  .mobile-bar{display:flex;}
  .site-footer{padding-bottom:96px;}
  .topbar__inner{justify-content:center;}
  .topbar a{display:none;}
}
@media (max-width:400px){
  .stat b{font-size:28px;}
  .card__tag{font-size:11px;}
  .btn{padding:11px 18px;font-size:14px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --ink:#1C3A34;
  --ink-2:#7C9A93;
  --accent:#E2663C;
  --bg:#F6F5F1;
  --deep:#0F211E;
  --text:#17211F;
  --muted:#5A6A66;
  --line:#E2E1DA;
  --white:#FFFFFF;
  --skeleton:#EDECE6;
  --r-card:14px;
  --r-btn:8px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,33,30,.05);
  --sh-2:0 10px 28px rgba(16,33,30,.10);
  --sh-3:0 20px 48px rgba(16,33,30,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:240ms;
  --maxw:1240px;
}
*,*::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:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,figure,blockquote,ul,ol,dl{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto;border-radius:var(--r-img)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:rgba(226,102,60,.20)}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:104px 0}
.section--tight{padding:72px 0}
.section--plain{background:var(--bg)}
.section--paper{background:#FBFBF8}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:500;letter-spacing:.14em;
  color:var(--ink-2);text-transform:uppercase;margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent)}
h1,h2,h3,h4{color:var(--ink);letter-spacing:-.01em}
h1{font-size:clamp(32px,4.4vw,50px);line-height:1.14;font-weight:700;letter-spacing:-.02em}
h2{font-size:clamp(24px,3vw,36px);line-height:1.22;font-weight:700}
h3{font-size:22px;line-height:1.35;font-weight:600}
h4{font-size:18px;font-weight:600;line-height:1.5}
.lead{font-size:17px;color:var(--muted);max-width:62ch}
.muted{color:var(--muted)}
.small{font-size:14px;color:var(--muted)}

/* ============ 顶部公告 + 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,245,241,.94);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 8px 24px rgba(16,33,30,.05)}
.announce{background:var(--deep);color:#D5E1DD}
.announce__inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:36px;font-size:13px;line-height:1.5;padding-top:6px;padding-bottom:6px}
.announce p{color:#C9D7D3}
.announce a{color:#F1F5F3;border-bottom:1px solid rgba(241,245,243,.4);padding-bottom:1px;transition:border-color var(--t) var(--ease)}
.announce a:hover{border-bottom-color:var(--accent)}

.nav{display:flex;align-items:center;gap:28px;height:72px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.logo__mark{position:relative;width:22px;height:22px;border-radius:7px;background:linear-gradient(140deg,var(--ink),var(--ink-2));flex:none}
.logo__mark::after{content:"";position:absolute;right:-4px;bottom:-4px;width:9px;height:9px;border-radius:50%;background:var(--accent);border:2px solid var(--bg)}
.logo__text{line-height:1}
.nav__list{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav__item{position:relative}
.nav__link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;font-size:15px;color:var(--text);border-radius:var(--r-btn);
  transition:color var(--t) var(--ease),background var(--t) var(--ease);
}
.nav__link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t) var(--ease);
}
.nav__link:hover{color:var(--ink);background:rgba(28,58,52,.05)}
.nav__link.is-active{color:var(--ink);font-weight:600}
.nav__link.is-active::after,.nav__link:hover::after{transform:scaleX(1)}
.nav__caret{width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translate(-1px,-1px);opacity:.55}
.nav__actions{display:flex;align-items:center;gap:12px}

/* Mega 面板 */
.has-mega{position:relative}
.mega{
  position:absolute;top:calc(100% + 8px);left:-8px;width:620px;
  display:grid;grid-template-columns:1.05fr 1fr;gap:28px;
  padding:24px;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-3);
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity var(--t) var(--ease),transform var(--t) var(--ease),visibility var(--t);
}
.mega::before{content:"";position:absolute;top:-14px;left:0;right:0;height:14px}
.has-mega:hover .mega,.has-mega:focus-within .mega{opacity:1;visibility:visible;transform:translateY(0)}
.mega__title{font-size:12px;letter-spacing:.12em;color:var(--muted);margin-bottom:14px}
.mega__list li + li{margin-top:4px}
.mega__link{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:9px 10px;font-size:14px;border-radius:8px;color:var(--text);
  transition:background var(--t) var(--ease),color var(--t) var(--ease);
}
.mega__link i{font-style:normal;color:var(--accent);transition:transform var(--t) var(--ease)}
.mega__link:hover{background:rgba(28,58,52,.06);color:var(--ink)}
.mega__link:hover i{transform:translateX(4px)}
.mega__news li{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px dashed var(--line);font-size:14px}
.mega__news li:last-child{border-bottom:0}
.mega__news a{color:var(--text);transition:color var(--t) var(--ease)}
.mega__news a:hover{color:var(--accent)}
.mega__news time{color:var(--muted);font-size:12px;white-space:nowrap}

.burger{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);align-items:center;justify-content:center;flex-direction:column;gap:5px;background:var(--white)}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}

/* 抽屉 */
.drawer{position:fixed;inset:0;z-index:120;display:none;flex-direction:column;background:var(--bg);padding:20px 20px 40px;overflow-y:auto}
.drawer.is-open{display:flex}
.drawer__top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer__close{width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);background:var(--white);font-size:20px;line-height:1;color:var(--ink)}
.drawer__link{display:block;padding:14px 2px;font-size:21px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--line)}
.drawer__group-title{margin:26px 0 8px;font-size:12px;letter-spacing:.14em;color:var(--muted)}
.drawer__sub{display:block;padding:10px 2px;font-size:15px;color:var(--muted);border-bottom:1px solid var(--line)}
.drawer__sub:hover{color:var(--accent)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;white-space:nowrap;
  transition:background var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease),transform var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.btn--primary{background:var(--ink);color:#F2F6F4}
.btn--primary:hover{background:#254A42;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn--ghost:hover{background:var(--ink);border-color:var(--ink);color:#F2F6F4}
.btn--light{background:#F2F6F4;color:var(--deep)}
.btn--light:hover{background:var(--white);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn__arrow{transition:transform var(--t) var(--ease)}
.btn:hover .btn__arrow{transform:translateX(3px)}
.link-more{position:relative;display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--ink)}
.link-more::after{content:"";position:absolute;left:0;bottom:-3px;height:1.5px;width:0;background:var(--accent);transition:width var(--t) var(--ease)}
.link-more:hover::after{width:100%}
.link-more i{font-style:normal;color:var(--accent)}

.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-pill);background:rgba(124,154,147,.16);color:var(--ink);font-size:12px;font-weight:500;letter-spacing:.02em}
.badge--accent{background:rgba(226,102,60,.14);color:#A8441F}
.badge--deep{background:rgba(28,58,52,.08)}

/* ============ 面包屑 ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px}
.crumb a{color:var(--muted);transition:color var(--t) var(--ease)}
.crumb a:hover{color:var(--ink)}
.crumb span[aria-hidden]{color:var(--ink-2)}

/* ============ Hero ============ */
.page-hero{position:relative;padding:52px 0 88px;overflow:hidden}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:44px;height:1px;
  background:linear-gradient(90deg,var(--line),rgba(226,225,218,0));
}
.page-hero__grid{display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center}
.page-hero h1{margin-bottom:18px}
.page-hero .lead{margin-bottom:12px}
.hero__actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px;margin-top:30px}
.hero__marks{display:flex;flex-wrap:wrap;gap:18px;margin-top:34px;font-size:14px;color:var(--muted)}
.hero__marks span{display:inline-flex;align-items:center;gap:10px}
.hero__marks span + span{padding-left:18px;border-left:1px solid var(--line)}
.hero__marks b{color:var(--ink);font-weight:600}
.hero__media{position:relative}
.hero__media img{width:100%;aspect-ratio:4/3;object-fit:cover;border:1px solid var(--line);box-shadow:var(--sh-1);border-radius:var(--r-card)}
.hero__media::before{content:"";position:absolute;top:-14px;left:-14px;width:64px;height:64px;border-radius:12px;background:var(--accent);opacity:.9;z-index:-1}
.hero__caption{position:absolute;left:0;right:0;bottom:0;padding:18px 20px;background:linear-gradient(180deg,rgba(15,33,30,0),rgba(15,33,30,.78));color:#EAF1EE;font-size:13px;border-radius:0 0 var(--r-card) var(--r-card)}

/* ============ 图文交替 ============ */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;padding:44px 0}
.feature + .feature{border-top:1px solid var(--line)}
.feature__media{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--skeleton);box-shadow:var(--sh-1);transition:box-shadow var(--t) var(--ease),transform var(--t) var(--ease)}
.feature__media:hover{box-shadow:var(--sh-2);transform:translateY(-3px)}
.feature__media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:0}
.feature__tag{position:absolute;top:14px;left:14px;padding:5px 12px;border-radius:var(--r-pill);background:rgba(255,255,255,.92);color:var(--ink);font-size:12px;font-weight:500}
.feature__index{display:block;font-family:Inter,system-ui,sans-serif;font-size:34px;font-weight:700;line-height:1;color:var(--accent);letter-spacing:-.03em;margin-bottom:14px}
.feature__body h3{margin-bottom:14px}
.feature__body p{color:var(--muted);margin-bottom:18px}
.tick{display:grid;gap:12px}
.tick li{display:flex;gap:12px;font-size:15px;color:var(--text)}
.tick li::before{content:"";flex:none;width:8px;height:8px;margin-top:9px;border-radius:50%;background:var(--accent)}

/* ============ 清单（细线表） ============ */
.checklist{border-top:1px solid var(--line);margin-top:12px}
.checklist__row{display:grid;grid-template-columns:64px 240px 1fr;gap:24px;padding:22px 0;border-bottom:1px solid var(--line);align-items:start;transition:background var(--t) var(--ease)}
.checklist__row:hover{background:rgba(124,154,147,.07)}
.checklist__no{font-family:Inter,system-ui,sans-serif;font-size:14px;font-weight:700;color:var(--accent);letter-spacing:.08em;padding-top:3px}
.checklist__key{font-weight:600;color:var(--ink)}
.checklist__val{color:var(--muted);font-size:15px}

/* ============ 数字带 ============ */
.band{background:var(--deep);color:#DCE7E3;padding:76px 0}
.band h2{color:#F1F5F3}
.band__grid{display:grid;grid-template-columns:repeat(4,1fr);margin-top:44px}
.band__item{padding:0 26px}
.band__item + .band__item{border-left:1px solid rgba(255,255,255,.14)}
.band__num{font-family:Inter,system-ui,sans-serif;font-size:clamp(30px,3.4vw,44px);font-weight:700;line-height:1;color:#FFFFFF;letter-spacing:-.03em}
.band__label{margin-top:10px;font-size:14px;color:#9FB4AE}

/* ============ 引言卡 ============ */
.quotes{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.quote{border-left:3px solid var(--accent);padding:6px 0 6px 22px}
.quote p{font-size:17px;color:var(--text);margin-bottom:14px}
.quote footer{font-size:14px;color:var(--muted)}
.quote footer strong{color:var(--ink);font-weight:600}

/* ============ FAQ ============ */
.faq{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:24px;
  padding:22px 0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);
  transition:color var(--t) var(--ease);
}
.faq__q:hover{color:var(--accent)}
.faq__icon{position:relative;flex:none;width:14px;height:14px}
.faq__icon::before,.faq__icon::after{content:"";position:absolute;background:var(--accent);transition:transform var(--t) var(--ease)}
.faq__icon::before{top:6px;left:0;width:14px;height:2px}
.faq__icon::after{top:0;left:6px;width:2px;height:14px}
.faq__item.is-open .faq__icon::after{transform:scaleY(0)}
.faq__a{max-height:0;overflow:hidden;transition:max-height var(--t) var(--ease)}
.faq__item.is-open .faq__a{max-height:420px}
.faq__a p{padding:0 46px 24px 0;color:var(--muted);font-size:15px}

/* ============ 联系表单 ============ */
.assist{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:start}
.form{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field--full{grid-column:1 / -1}
.field label{font-size:13px;color:var(--muted)}
.field input,.field textarea{
  width:100%;padding:13px 14px;background:var(--white);
  border:1px solid var(--line);border-radius:var(--r-btn);
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.field textarea{min-height:132px;resize:vertical;line-height:1.7}
.field input:hover,.field textarea:hover{border-color:var(--ink-2)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(226,102,60,.18)}
.form__foot{grid-column:1 / -1;display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:6px}
.form__status{font-size:14px;color:var(--ink);opacity:0;transition:opacity var(--t) var(--ease)}
.form__status.is-visible{opacity:1}

/* ============ 页尾 CTA ============ */
.cta{position:relative;background-color:var(--deep);background-image:linear-gradient(90deg,rgba(15,33,30,.94),rgba(15,33,30,.82)),url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;color:#E6EFEC;padding:88px 0}
.cta__inner{display:flex;align-items:center;justify-content:space-between;gap:40px}
.cta h2{color:#F4F8F6;max-width:22ch}
.cta p{margin-top:12px;color:#A9BDB7;font-size:15px;max-width:52ch}

/* ============ 页脚 ============ */
.site-footer{background:var(--deep);color:#C4D2CE;padding-top:72px}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:56px}
.footer__brand{display:flex;align-items:center;gap:10px;color:#FFFFFF;font-weight:700;font-size:17px;margin-bottom:16px}
.footer__brand .logo__mark::after{border-color:var(--deep)}
.footer__desc{font-size:14px;color:#9FB4AE;max-width:36ch}
.footer__title{font-size:12px;letter-spacing:.14em;color:#7F948F;margin-bottom:18px}
.footer__list li + li{margin-top:10px}
.footer__list a{font-size:14px;color:#C4D2CE;transition:color var(--t) var(--ease),padding-left var(--t) var(--ease)}
.footer__list a:hover{color:#FFFFFF;padding-left:4px}
.footer__bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;font-size:13px;color:#829a95}

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

/* ============ 平板 ============ */
@media (max-width:1279px){
  .section{padding:88px 0}
  .mega{width:560px}
}
@media (max-width:1023px){
  .nav__list{display:none}
  .burger{display:flex}
  .nav__cta{display:none}
  .nav{gap:16px;height:64px}
  .page-hero{padding:36px 0 64px}
  .page-hero__grid{grid-template-columns:1fr;gap:36px}
  .page-hero::after{display:none}
  .feature{grid-template-columns:1fr;gap:28px;padding:32px 0}
  .feature__media{order:-1}
  .checklist__row{grid-template-columns:52px 1fr;gap:8px 16px}
  .checklist__val{grid-column:2}
  .band__grid{grid-template-columns:1fr 1fr;row-gap:36px}
  .band__item:nth-child(odd){border-left:0;padding-left:0}
  .quotes{grid-template-columns:1fr}
  .assist{grid-template-columns:1fr;gap:32px}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta__inner{flex-direction:column;align-items:flex-start;gap:26px}
}
/* ============ 手机 ============ */
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  h1{font-size:clamp(30px,8vw,38px)}
  h2{font-size:clamp(23px,6vw,28px)}
  .lead{font-size:16px}
  .announce__inner{flex-direction:column;align-items:flex-start;gap:2px;padding-top:8px;padding-bottom:8px}
  .hero__actions{gap:14px}
  .hero__marks{flex-direction:column;gap:10px}
  .hero__marks span + span{padding-left:0;border-left:0}
  .feature__index{font-size:28px}
  .checklist__row{grid-template-columns:1fr;padding:18px 0}
  .checklist__no{padding-top:0}
  .checklist__val{grid-column:1}
  .band{padding:56px 0}
  .band__grid{grid-template-columns:1fr;row-gap:28px}
  .band__item{padding:0;border-left:0!important}
  .band__item + .band__item{border-top:1px solid rgba(255,255,255,.14);padding-top:24px}
  .form{grid-template-columns:1fr}
  .faq__q{font-size:16px;padding:18px 0}
  .faq__a p{padding-right:0}
  .cta{padding:64px 0}
  .footer__grid{grid-template-columns:1fr}
  .site-footer{padding-top:56px}
  .btn{width:100%}
  .hero__actions .link-more,.cta .btn{width:auto}
}
@media (max-width:400px){
  .badge{font-size:11px;padding:4px 10px}
  .feature__index{font-size:24px}
  .band__num{font-size:28px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .js-ready .reveal{opacity:1;transform:none}
}