/* roulang page: index */
:root{
  --clr-primary:#0C3B3F;
  --clr-primary-700:#082B2E;
  --clr-primary-100:#E3F0EE;
  --clr-accent:#E9623C;
  --clr-accent-700:#D54F2B;
  --clr-teal:#2FA79B;
  --clr-sand:#D9A661;
  --bg:#FBF8F3;
  --bg-alt:#F2EDE4;
  --ink:#10262A;
  --text:#3A4A4C;
  --muted:#6E7E7F;
  --on-dark:#F7FBF9;
  --on-dark-soft:rgba(247,251,249,.78);
  --border:rgba(12,59,63,.12);
  --border-strong:rgba(12,59,63,.4);
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-xl:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(12,59,63,.05),0 10px 28px -12px rgba(12,59,63,.18);
  --sh-2:0 2px 6px rgba(12,59,63,.08),0 18px 40px -14px rgba(12,59,63,.26);
  --sh-dark:0 20px 48px -20px rgba(0,0,0,.45);
  --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;--sp-10:120px;
  --container:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:clamp(16px,.55vw + 14px,17px);
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
:focus-visible{outline:2px solid var(--clr-primary);outline-offset:2px;border-radius:6px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--clr-primary);color:#fff;padding:10px 18px;border-radius:0 0 var(--r-md) 0;z-index:200}
.skip-link:focus{left:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:100px 0;scroll-margin-top:96px}
.section--alt{background:var(--bg-alt)}
.section--dark{background:var(--clr-primary);color:var(--on-dark)}
.section--dark p{color:var(--on-dark-soft)}
.section--tight{padding-top:0}
h1,.h1{font-size:clamp(1.875rem,3.6vw + .6rem,3rem);line-height:1.2;font-weight:700;letter-spacing:.01em;color:var(--ink)}
h2,.h2{font-size:clamp(1.5rem,2.2vw + .5rem,2.125rem);line-height:1.28;font-weight:700;letter-spacing:.01em;color:var(--ink)}
h3,.h3{font-size:clamp(1.125rem,1vw + .7rem,1.375rem);line-height:1.4;font-weight:700;letter-spacing:.01em;color:var(--ink)}
.section--dark h2,.section--dark h3,.section--dark h1{color:var(--on-dark)}
.lead{font-size:clamp(1rem,.4vw + .9rem,1.0625rem);line-height:1.8;color:var(--text)}
.section--dark .lead{color:var(--on-dark-soft)}
.sec-head{max-width:760px;margin-bottom:var(--sp-7)}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head p{margin-top:var(--sp-4)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(12,59,63,.08);color:var(--clr-primary);
  font-size:12.5px;font-weight:600;letter-spacing:.06em;line-height:1.4;
  margin-bottom:var(--sp-4);
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.section--dark .eyebrow{background:rgba(255,255,255,.12);color:#fff}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);background:rgba(12,59,63,.08);color:var(--clr-primary);font-size:12.5px;font-weight:600;letter-spacing:.04em;line-height:1.5}
.badge--accent{background:rgba(233,98,60,.12);color:var(--clr-accent-700)}
.badge--teal{background:rgba(47,167,155,.14);color:#1E7D74}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:14px 28px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;line-height:1.1;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn--primary{background:var(--clr-accent);color:#fff;box-shadow:0 10px 24px -10px rgba(12,59,63,.3)}
.btn--primary:hover{background:var(--clr-accent-700);transform:translateY(-1px)}
.btn--primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.2)}
.btn--ghost{background:transparent;border:1.5px solid var(--clr-primary);color:var(--clr-primary)}
.btn--ghost:hover{background:rgba(12,59,63,.1)}
.btn--ghost:active{background:rgba(12,59,63,.16)}
.section--dark .btn--ghost{border-color:rgba(255,255,255,.6);color:#fff}
.section--dark .btn--ghost:hover{background:rgba(255,255,255,.14)}
.btn--white{background:#fff;color:var(--clr-primary)}
.btn--white:hover{background:var(--clr-primary-100);transform:translateY(-1px)}
.btn--sm{padding:10px 20px;font-size:14px;min-height:44px}
.btn--lg{padding:16px 34px;font-size:16px;min-height:54px}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--clr-primary);font-weight:600;font-size:15px;transition:color .2s var(--ease)}
.link-arrow svg{transition:transform .22s var(--ease)}
.link-arrow:hover{color:var(--clr-accent-700)}
.link-arrow:hover svg{transform:translateX(4px)}
.section--dark .link-arrow{color:#fff}
.section--dark .link-arrow:hover{color:var(--clr-sand)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(251,248,243,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-stuck{border-bottom-color:var(--border);box-shadow:0 8px 24px -18px rgba(12,59,63,.45)}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px;
  height:72px;transition:height .24s var(--ease);
}
.site-header.is-stuck .header-inner{height:64px}
.nav{display:flex;align-items:center;gap:26px}
.nav--left{justify-self:start}
.nav-right{justify-self:end;display:flex;align-items:center;gap:20px}
.nav-link{position:relative;font-size:14.5px;font-weight:500;color:var(--text);padding:6px 0;transition:color .2s var(--ease)}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--clr-primary);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease)}
.nav-link:hover{color:var(--clr-primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--clr-primary);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active::before{content:"";position:absolute;left:-11px;top:50%;width:4px;height:4px;border-radius:50%;background:var(--clr-primary);transform:translateY(-50%)}
.brand{justify-self:center;display:inline-flex;align-items:center;gap:10px;white-space:nowrap}
.brand-mark{width:22px;height:22px;flex:none;color:var(--clr-primary);display:block}
.brand-name{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.01em}
.site-footer .brand-mark{color:#fff}
.site-footer .brand-name{color:#fff}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-md);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  justify-self:start;
}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--clr-primary);transition:transform .24s var(--ease),opacity .24s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-drawer{
  position:fixed;left:0;right:0;top:0;height:100vh;height:100dvh;
  background:var(--bg);z-index:120;
  padding:88px 24px 28px;
  transform:translateY(-100%);
  transition:transform .3s var(--ease);
  display:flex;flex-direction:column;
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateY(0)}
.nav-drawer a{
  display:flex;align-items:center;
  font-size:20px;line-height:56px;color:var(--ink);
  border-left:3px solid transparent;padding-left:14px;
  border-bottom:1px solid var(--border);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.nav-drawer a:hover,.nav-drawer a.is-active{color:var(--clr-primary);border-left-color:var(--clr-primary);background:rgba(12,59,63,.05)}
.nav-drawer .btn{margin-top:auto;width:100%}
.nav-overlay{position:fixed;inset:0;background:rgba(16,38,42,.45);opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s var(--ease);z-index:110}
.nav-overlay.is-open{opacity:1;visibility:visible}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:64px 0 96px;background:var(--bg)}
.hero::before{
  content:"";position:absolute;right:-120px;top:-80px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(47,167,155,.12),rgba(47,167,155,0) 68%);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center;
  min-height:clamp(520px,58vh,640px);
}
.hero-copy>*+*{margin-top:var(--sp-5)}
.hero-copy h1{margin-top:var(--sp-1)}
.hero-sub{font-size:clamp(1rem,.45vw + .92rem,1.0625rem);line-height:1.8;color:var(--text);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-notes{display:flex;flex-wrap:wrap;gap:10px 22px;padding-top:var(--sp-2)}
.hero-note{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--muted)}
.hero-note svg{flex:none;color:var(--clr-teal)}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-xl);background:var(--bg-alt);box-shadow:var(--sh-1)}
.hero-media::after{
  content:"";position:absolute;left:-8%;right:-8%;bottom:-32px;height:64px;
  border-radius:50% 50% 0 0/100% 100% 0 0;
  border-top:1px solid rgba(12,59,63,.18);
  pointer-events:none;
}
.hero-stat{
  position:absolute;left:-22px;bottom:34px;
  display:flex;align-items:center;gap:14px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:16px 20px;box-shadow:var(--sh-2);max-width:260px;
}
.hero-stat strong{display:block;font-size:26px;line-height:1.1;color:var(--clr-accent);font-weight:700}
.hero-stat span{display:block;font-size:13px;color:var(--muted);line-height:1.6}
.hero-stat .dotmark{width:8px;height:8px;border-radius:50%;background:var(--clr-teal);flex:none}

/* ---------- trust ---------- */
.trust{padding:0 0 8px;background:var(--bg)}
.trust-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:32px;
  border-top:1px dashed rgba(12,59,63,.18);
  padding-top:36px;
}
.trust-item strong{display:block;font-size:28px;line-height:1.15;font-weight:700;color:var(--clr-accent)}
.trust-item span{display:block;margin-top:6px;font-size:13px;color:var(--muted);line-height:1.7}

/* ---------- pain ---------- */
.pain-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:start}
.pain-list{margin-top:var(--sp-6)}
.pain-item{display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--border)}
.pain-item:first-child{border-top:1px solid var(--border)}
.pain-num{
  flex:none;width:28px;height:28px;border-radius:50%;
  background:var(--clr-primary-100);color:var(--clr-primary);
  font-size:13px;font-weight:700;display:grid;place-items:center;margin-top:2px;
}
.pain-item h3{font-size:18px;margin-bottom:6px}
.pain-item p{font-size:15px;line-height:1.75;color:var(--muted)}
.pain-media{border-radius:var(--r-xl);overflow:hidden;background:var(--bg);box-shadow:var(--sh-1)}
.pain-media img{width:100%;aspect-ratio:3/4;object-fit:cover}

/* ---------- split / solution ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split+.split{margin-top:88px}
.split-media{border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh-1);background:var(--bg-alt)}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.split--reverse .split-media{order:2}
.split-body h3{margin-bottom:var(--sp-4)}
.split-body p+p{margin-top:var(--sp-4)}
.check-list{margin-top:var(--sp-5);display:grid;gap:12px}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:15.5px;line-height:1.7}
.check-list svg{flex:none;margin-top:4px;color:var(--clr-teal)}
.split-body .link-arrow{margin-top:var(--sp-5)}

/* ---------- results ---------- */
.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.result-nums{display:grid;gap:32px}
.result-num strong{display:block;font-size:clamp(2rem,3vw + .6rem,2.75rem);line-height:1.05;font-weight:700;color:var(--clr-accent)}
.result-num span{display:block;margin-top:8px;font-size:14.5px;color:var(--on-dark-soft);line-height:1.7}
.bar-card{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-lg);
  padding:24px 28px;
  box-shadow:var(--sh-dark);
  transition:transform .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease);
}
.bar-card+.bar-card{margin-top:20px}
.bar-card:hover{transform:translateY(-3px);border-color:rgba(255,255,255,.3);background:rgba(255,255,255,.09)}
.bar-card h3{font-size:18px;color:#fff;margin-bottom:8px}
.bar-card p{font-size:14.5px;line-height:1.75;color:var(--on-dark-soft)}
.bar-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.bar-tags .badge{background:rgba(255,255,255,.12);color:rgba(255,255,255,.9)}
.result-foot{margin-top:var(--sp-7);padding-top:var(--sp-5);border-top:1px dashed rgba(255,255,255,.2);font-size:13.5px;color:var(--on-dark-soft)}

/* ---------- news ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:var(--sp-7)}
.news-head .sec-head{margin-bottom:0}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--border-strong)}
.news-card__media{position:relative;aspect-ratio:16/9;background:var(--bg-alt);overflow:hidden}
.news-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.news-card:hover .news-card__media img{transform:scale(1.04)}
.news-card__body{display:flex;flex-direction:column;flex:1;padding:22px 24px 24px}
.news-card__title{
  margin-top:12px;font-size:18px;line-height:1.45;font-weight:700;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__desc{
  margin-top:10px;font-size:14.5px;line-height:1.75;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__meta{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);
}
.news-card__more{color:var(--clr-primary);font-weight:600}
.news-card:hover .news-card__more{color:var(--clr-accent-700)}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 24px;
  background:var(--bg-alt);border:1px dashed var(--border);border-radius:var(--r-lg);
}
.empty-state svg{color:rgba(12,59,63,.3);margin:0 auto 16px}
.empty-state p{font-size:14.5px;color:var(--muted)}
.empty-state .link-arrow{margin-top:16px}

/* ---------- quotes ---------- */
.quote-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.quote-card{
  position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:36px 28px 28px;box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.quote-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.quote-card::before{
  content:"\201C";position:absolute;left:20px;top:2px;
  font-family:Georgia,"Times New Roman",serif;font-size:76px;line-height:1;
  color:rgba(12,59,63,.1);
}
.quote-card blockquote{font-size:16px;line-height:1.8;color:var(--text);position:relative}
.quote-foot{display:flex;align-items:center;gap:14px;margin-top:24px;padding-top:20px;border-top:1px solid var(--border)}
.avatar{
  width:48px;height:48px;border-radius:50%;flex:none;
  background:var(--clr-primary-100);color:var(--clr-primary);
  display:grid;place-items:center;font-size:16px;font-weight:700;
}
.quote-who strong{display:block;font-size:15px;color:var(--ink)}
.quote-who span{display:block;font-size:13px;color:var(--muted)}
.stars{display:flex;gap:3px;margin-left:auto;color:var(--clr-sand)}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:.82fr 1.18fr;gap:56px;align-items:start}
.faq-side{position:sticky;top:96px}
.faq-side p{margin-top:var(--sp-4)}
.faq{max-width:800px;width:100%}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item:first-child{border-top:1px solid var(--border)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;font-size:18px;font-weight:600;color:var(--ink);line-height:1.5;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--clr-primary)}
.faq-icon{position:relative;flex:none;width:18px;height:18px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--clr-primary);border-radius:2px;transition:transform .26s var(--ease)}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq-a p{padding:0 0 22px;font-size:15.5px;line-height:1.8;color:var(--text);max-width:660px}

/* ---------- cta ---------- */
.cta{position:relative;overflow:hidden;background:var(--clr-primary);color:var(--on-dark);text-align:center;padding:96px 0}
.cta::before{
  content:"";position:absolute;left:-240px;top:-120px;width:480px;height:480px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(47,167,155,.18),rgba(47,167,155,0) 70%);
}
.cta::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:-46px;
  width:140%;height:92px;border-radius:50% 50% 0 0/100% 100% 0 0;
  border-top:1px solid rgba(255,255,255,.16);
}
.cta-inner{position:relative;max-width:720px;margin:0 auto}
.cta-inner h2{margin-bottom:var(--sp-4)}
.cta-inner p{color:var(--on-dark-soft);font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:var(--sp-6)}

/* ---------- footer ---------- */
.site-footer{background:var(--clr-primary-700);color:var(--on-dark);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:var(--on-dark-soft);max-width:30em}
.footer-contact{margin-top:16px;font-size:14px;color:var(--on-dark-soft)}
.footer-contact strong{color:#fff;font-weight:600}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.02em}
.footer-col li+li{margin-top:10px}
.footer-col a{font-size:14px;color:var(--on-dark-soft);transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-sub p{font-size:14px;color:var(--on-dark-soft);line-height:1.8}
.sub-form{display:flex;gap:10px;margin-top:16px}
.sub-form input{
  flex:1;min-width:0;height:48px;padding:0 16px;border-radius:var(--r-md);
  border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.08);color:#fff;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.sub-form input::placeholder{color:rgba(247,251,249,.5)}
.sub-form input:focus{outline:none;border-color:var(--clr-teal);box-shadow:0 0 0 3px rgba(47,167,155,.22)}
.sub-form .btn{flex:none;padding:0 20px;height:48px;min-height:48px}
.footer-note{margin-top:12px;font-size:12.5px;color:rgba(247,251,249,.5)}
.footer-bottom{
  margin-top:64px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px 24px;
  align-items:center;justify-content:space-between;font-size:13px;color:rgba(247,251,249,.62);
}
.footer-bottom nav{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom a{color:rgba(247,251,249,.72)}
.footer-bottom a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}

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

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .hero-grid{gap:44px}
  .container{padding:0 24px}
}
@media (max-width:960px){
  .section{padding:72px 0}
  .header-inner{grid-template-columns:44px 1fr 44px;height:64px;gap:8px}
  .nav-toggle{display:flex}
  .nav--left,.nav--right .nav{display:none}
  .nav-right{justify-self:end}
  .nav-cta{display:none}
  .brand-name{font-size:17px}
  .hero{padding:48px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:40px;min-height:0}
  .hero-media{order:2}
  .hero-stat{left:12px;bottom:12px;padding:14px 16px}
  .trust-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .pain-grid{grid-template-columns:1fr;gap:36px}
  .pain-media{max-width:520px}
  .pain-media img{aspect-ratio:16/11}
  .split{grid-template-columns:1fr;gap:32px}
  .split+.split{margin-top:64px}
  .split--reverse .split-media{order:0}
  .result-grid{grid-template-columns:1fr;gap:40px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .quote-grid{grid-template-columns:1fr}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .faq-side{position:static}
  .cta{padding:72px 0}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:36px}
  .footer-brand{grid-column:1/-1}
  .footer-sub{grid-column:1/-1}
  .footer-bottom{margin-top:44px}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  h1,.h1{font-size:1.875rem}
  h2,.h2{font-size:1.5rem}
  h3,.h3{font-size:1.125rem}
  .brand-name{font-size:16px}
  .nav-drawer{padding:80px 18px 24px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-media::after{bottom:-22px;height:44px}
  .hero-stat{position:static;margin-top:18px;max-width:none;width:100%}
  .trust-grid{grid-template-columns:repeat(2,1fr);gap:20px 16px}
  .trust-item strong{font-size:24px}
  .section--dark,.cta{padding-left:0;padding-right:0}
  .news-head{flex-direction:column;align-items:flex-start;gap:12px}
  .news-grid{grid-template-columns:1fr}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --clr-primary:#0C3B3F;
  --clr-primary-700:#082B2E;
  --clr-primary-100:#E3F0EE;
  --clr-accent:#E9623C;
  --clr-accent-700:#D54F2B;
  --clr-teal:#2FA79B;
  --clr-sand:#D9A661;

  --bg:#FBF8F3;
  --bg-alt:#F2EDE4;
  --bg-dark:#0C3B3F;

  --txt-h:#10262A;
  --txt:#3A4A4C;
  --txt-muted:#6E7E7F;
  --txt-inv:#F7FBF9;

  --border:rgba(12,59,63,.12);
  --border-strong:rgba(12,59,63,.24);

  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-xl:24px;
  --r-pill:999px;

  --sh-1:0 1px 2px rgba(12,59,63,.05), 0 10px 28px -12px rgba(12,59,63,.18);
  --sh-2:0 2px 6px rgba(12,59,63,.08), 0 18px 40px -14px rgba(12,59,63,.26);
  --sh-dark:0 20px 48px -20px rgba(0,0,0,.45);

  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:220ms;

  --container:1200px;
  --gutter:24px;
  --sec-y:100px;

  --fs-h1:clamp(30px, 4.2vw, 48px);
  --fs-h2:clamp(24px, 2.8vw, 34px);
  --fs-h3:clamp(18px, 1.9vw, 22px);
  --fs-body:clamp(16px, 1.15vw, 17px);
  --fs-sm:14px;
  --fs-xs:12.5px;

  --font:-apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Helvetica Neue", Arial, sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--txt);
  font-family:var(--font);
  font-size:var(--fs-body);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden;}
img{max-width:100%;display:block;height:auto;}
a{color:var(--clr-primary);text-decoration:none;transition:color var(--dur) var(--ease);}
a:hover{color:var(--clr-accent);}
button{font:inherit;color:inherit;}
input,button,textarea{font-family:inherit;}
h1,h2,h3,h4{
  margin:0;
  color:var(--txt-h);
  font-weight:700;
  letter-spacing:.01em;
  line-height:1.28;
}
h1{font-size:var(--fs-h1);line-height:1.2;}
h2{font-size:var(--fs-h2);}
h3{font-size:var(--fs-h3);}
p{margin:0 0 16px;}
ul,ol{margin:0;padding:0;}
:focus-visible{outline:2px solid var(--clr-primary);outline-offset:2px;border-radius:4px;}

.skip-link{
  position:absolute;left:-9999px;top:0;
  background:var(--clr-primary);color:#fff;
  padding:10px 16px;border-radius:0 0 var(--r-sm) 0;z-index:200;
}
.skip-link:focus{left:0;color:#fff;}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;
  padding:14px 28px;
  border-radius:var(--r-md);
  border:1.5px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  cursor:pointer;
  transition:transform var(--dur) var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.btn--primary{
  background:var(--clr-accent);
  color:#fff;
  box-shadow:0 10px 24px -10px rgba(12,59,63,.5);
}
.btn--primary:hover{background:var(--clr-accent-700);color:#fff;transform:translateY(-1px);box-shadow:0 14px 30px -12px rgba(12,59,63,.55);}
.btn--primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.2);}
.btn--ghost{
  background:transparent;
  border-color:var(--clr-primary);
  color:var(--clr-primary);
}
.btn--ghost:hover{background:rgba(12,59,63,.08);color:var(--clr-primary);transform:translateY(-1px);}
.btn--ghost:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(12,59,63,.12);}
.btn--invert{background:#fff;color:var(--clr-primary);border-color:#fff;}
.btn--invert:hover{background:var(--clr-primary-100);color:var(--clr-primary);transform:translateY(-1px);}
.btn--sm{padding:10px 20px;font-size:14px;min-height:40px;}
.btn--lg{padding:16px 34px;font-size:16px;}
.btn--block{width:100%;}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;}

.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--clr-primary);
}
.text-link span{transition:transform var(--dur) var(--ease);}
.text-link:hover span{transform:translateX(4px);}
.text-link:hover{color:var(--clr-accent);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  background:rgba(12,59,63,.08);
  color:var(--clr-primary);
  font-size:var(--fs-xs);
  font-weight:600;
  letter-spacing:.06em;
  line-height:1.5;
}
.badge::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--clr-teal);flex:0 0 auto;
}
.badge--accent{background:rgba(233,98,60,.12);color:var(--clr-accent-700);}
.badge--accent::before{background:var(--clr-accent);}
.badge--light{background:rgba(255,255,255,.14);color:var(--txt-inv);}
.badge--light::before{background:var(--clr-teal);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(251,248,243,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
}
.site-header.is-stuck{
  border-bottom-color:var(--border);
  box-shadow:0 8px 24px -18px rgba(12,59,63,.4);
}
.nav-wrap{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  height:72px;
  transition:height var(--dur) var(--ease);
}
.site-header.is-stuck .nav-wrap{height:64px;}
.nav-left-wrap{display:flex;align-items:center;gap:8px;min-width:0;}
.nav-right-wrap{display:flex;align-items:center;justify-content:flex-end;gap:12px;min-width:0;}
.nav{display:flex;align-items:center;gap:26px;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  min-height:44px;
  font-size:14.5px;font-weight:500;
  color:var(--txt);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:8px;
  width:0;height:2px;border-radius:2px;background:var(--clr-primary);
  transition:width var(--dur) var(--ease);
}
.nav-link:hover{color:var(--clr-primary);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--clr-primary);font-weight:600;}
.nav-link.is-active::after{width:100%;}
.nav-link.is-active::before{
  content:"";width:4px;height:4px;border-radius:50%;
  background:var(--clr-accent);margin-right:7px;
}
.brand{
  display:inline-flex;align-items:center;gap:9px;
  color:var(--clr-primary);
  justify-self:center;
}
.brand:hover{color:var(--clr-primary);}
.brand-mark{width:22px;height:22px;flex:0 0 auto;color:var(--clr-primary);}
.brand-name{
  font-size:18px;font-weight:700;letter-spacing:.01em;
  white-space:nowrap;color:var(--txt-h);
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--border);
  border-radius:var(--r-sm);
  background:transparent;
  align-items:center;justify-content:center;
  cursor:pointer;
  transition:background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.nav-toggle:hover{background:rgba(12,59,63,.06);border-color:var(--border-strong);}
.nav-toggle span{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--clr-primary);
  position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--clr-primary);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-placeholder{display:none;width:44px;height:44px;}

/* ---------- 移动抽屉 ---------- */
.drawer-overlay{
  position:fixed;inset:0;z-index:90;
  background:rgba(8,43,46,.45);
  opacity:0;visibility:hidden;
  transition:opacity var(--dur) var(--ease), visibility var(--dur) var(--ease);
}
.drawer-overlay.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;left:0;right:0;z-index:100;
  max-height:100vh;
  background:var(--bg);
  padding:18px var(--gutter) 28px;
  transform:translateY(-102%);
  transition:transform 260ms var(--ease);
  display:flex;flex-direction:column;
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--border);}
.drawer-head .brand-name{font-size:16px;}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--border);background:transparent;
  font-size:22px;line-height:1;color:var(--clr-primary);
  cursor:pointer;
}
.drawer-close:hover{background:rgba(12,59,63,.06);}
.drawer-nav{display:flex;flex-direction:column;margin:10px 0 22px;}
.drawer-nav a{
  display:flex;align-items:center;
  min-height:56px;
  font-size:20px;font-weight:500;
  color:var(--txt-h);
  border-bottom:1px solid var(--border);
  padding-left:12px;
  border-left:3px solid transparent;
  transition:color var(--dur) var(--ease), border-color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--clr-primary);border-left-color:var(--clr-primary);padding-left:16px;}

/* ---------- 区块通用 ---------- */
.section{padding:var(--sec-y) 0;}
.section--alt{background:var(--bg-alt);}
.section--dark{background:var(--bg-dark);color:rgba(247,251,249,.82);}
.section--dark h2{color:var(--txt-inv);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:44px;
}
.section-head p{max-width:620px;margin:10px 0 0;color:var(--txt-muted);font-size:15.5px;}

/* ---------- 面包屑 ---------- */
.crumb-bar{
  border-bottom:1px solid var(--border);
  background:rgba(242,237,228,.5);
}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  padding:18px 0;
  font-size:14px;color:var(--txt-muted);
}
.breadcrumb a{color:var(--txt-muted);}
.breadcrumb a:hover{color:var(--clr-primary);}
.breadcrumb .sep{color:rgba(12,59,63,.3);}
.breadcrumb .current{
  color:var(--txt-h);font-weight:600;
  max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ---------- 文章头部 ---------- */
.article-hero{
  padding:52px 0 44px;
  background:linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%);
  border-bottom:1px solid var(--border);
}
.article-hero-inner{max-width:820px;}
.article-title{
  margin:20px 0 0;
  font-size:clamp(28px, 3.4vw, 40px);
  line-height:1.25;
  color:var(--txt-h);
}
.article-lead{
  margin:18px 0 0;
  font-size:16.5px;
  line-height:1.8;
  color:var(--txt-muted);
  max-width:720px;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:14px;
  margin-top:24px;padding-top:22px;
  border-top:1px solid var(--border);
  font-size:14px;color:var(--txt-muted);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(12,59,63,.25);}

.article-figure{
  margin:0 0 48px;
}
.article-figure img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--r-lg);
  background:var(--bg-alt);
  border:1px solid var(--border);
}
.article-figure figcaption{
  margin-top:12px;
  text-align:center;
  font-size:13px;
  color:var(--txt-muted);
}

/* ---------- 文章主体布局 ---------- */
.article-main{padding:56px 0 0;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:64px;
  align-items:start;
}
.article-body{
  font-size:17px;
  line-height:1.9;
  color:var(--txt);
  max-width:760px;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 20px;}
.article-body h2{
  position:relative;
  margin:48px 0 16px;
  padding-left:16px;
  font-size:30px;
  line-height:1.32;
  color:var(--txt-h);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;
  width:4px;height:20px;border-radius:2px;background:var(--clr-primary);
}
.article-body h3{
  margin:32px 0 12px;
  font-size:22px;
  color:var(--txt-h);
}
.article-body h4{
  margin:24px 0 10px;
  font-size:18px;
  color:var(--txt-h);
}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:0;list-style:none;}
.article-body ul li{
  position:relative;
  padding-left:20px;
  margin-bottom:10px;
  line-height:1.9;
}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:12px;
  width:6px;height:6px;border-radius:50%;background:var(--clr-primary);
}
.article-body ol{counter-reset:olc;}
.article-body ol li{
  position:relative;
  padding-left:40px;
  margin-bottom:12px;
  counter-increment:olc;
  line-height:1.9;
}
.article-body ol li::before{
  content:counter(olc);
  position:absolute;left:0;top:5px;
  width:28px;height:28px;border-radius:50%;
  background:var(--clr-primary-100);
  color:var(--clr-primary);
  font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.article-body blockquote{
  margin:26px 0;
  padding:20px 24px;
  background:var(--bg-alt);
  border-left:3px solid var(--clr-accent);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--txt);
  font-size:16.5px;
  line-height:1.85;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  width:100%;
  border-radius:14px;
  margin:26px 0 10px;
  background:var(--bg-alt);
}
.article-body figure{margin:26px 0;}
.article-body figure figcaption,
.article-body .img-cap{
  font-size:13px;
  color:var(--txt-muted);
  text-align:center;
  line-height:1.7;
}
.article-body a{
  color:var(--clr-primary);
  border-bottom:1px solid rgba(12,59,63,.35);
}
.article-body a:hover{color:var(--clr-accent);border-bottom-color:rgba(233,98,60,.5);}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:26px 0;
  font-size:15.5px;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  overflow:hidden;
}
.article-body thead th{
  background:var(--bg-alt);
  color:var(--txt-h);
  font-weight:600;
  text-align:left;
}
.article-body th,.article-body td{
  padding:12px 16px;
  border-bottom:1px solid var(--border);
}
.article-body tbody tr:last-child td{border-bottom:none;}
.article-body strong{color:var(--txt-h);}
.article-body hr{
  border:none;
  border-top:1px dashed rgba(12,59,63,.2);
  margin:36px 0;
}

/* ---------- 侧栏 ---------- */
.article-side{
  position:sticky;
  top:96px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.side-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:24px;
  box-shadow:var(--sh-1);
}
.side-card h2{
  font-size:16px;
  margin-bottom:14px;
  padding-bottom:12px;
  border-bottom:1px dashed rgba(12,59,63,.18);
}
.side-links{list-style:none;display:flex;flex-direction:column;}
.side-links li + li{border-top:1px solid var(--border);}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;
  gap:10px;
  padding:12px 0;
  font-size:15px;
  color:var(--txt);
  transition:color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}
.side-links a::after{
  content:"→";
  color:var(--clr-teal);
  font-size:14px;
  transition:transform var(--dur) var(--ease);
}
.side-links a:hover{color:var(--clr-primary);padding-left:4px;}
.side-links a:hover::after{transform:translateX(4px);}
.side-card--cta{
  background:var(--clr-primary);
  border-color:var(--clr-primary);
  color:rgba(247,251,249,.82);
  box-shadow:var(--sh-dark);
}
.side-card--cta h2{color:var(--txt-inv);border-bottom-color:rgba(255,255,255,.16);}
.side-card--cta p{font-size:14.5px;line-height:1.75;margin-bottom:18px;}
.side-card--cta .btn{background:var(--clr-accent);color:#fff;border-color:transparent;}
.side-card--cta .btn:hover{background:var(--clr-accent-700);color:#fff;}

/* ---------- 文章尾 ---------- */
.article-foot{
  margin-top:48px;
  padding-top:26px;
  border-top:1px solid var(--border);
}
.tag-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px;}
.tag-row .tag-title{font-size:14px;font-weight:600;color:var(--txt-h);margin-right:4px;}
.tag{
  display:inline-flex;align-items:center;
  min-height:34px;
  padding:6px 16px;
  border-radius:var(--r-pill);
  background:var(--clr-primary-100);
  color:var(--clr-primary);
  font-size:13px;
  font-weight:500;
  transition:background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.tag:hover{background:var(--clr-primary);color:#fff;}
.share-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}

.nextprev-grid{
  display:grid;
  grid-template-columns:repeat(2, minmax(0,1fr));
  gap:20px;
  margin-top:40px;
}
.nextprev-card{
  display:block;
  padding:22px 24px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  transition:transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.nextprev-card:hover{
  transform:translateY(-3px);
  border-color:rgba(12,59,63,.4);
  box-shadow:var(--sh-2);
}
.nextprev-card .np-label{
  display:block;
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--clr-teal);
  font-weight:600;
  margin-bottom:8px;
}
.nextprev-card strong{
  display:block;
  font-size:17px;
  color:var(--txt-h);
  line-height:1.5;
}
.nextprev-card span.np-desc{
  display:block;
  margin-top:8px;
  font-size:14px;
  color:var(--txt-muted);
  line-height:1.7;
}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;gap:28px;}
.card-grid--3{grid-template-columns:repeat(3, minmax(0,1fr));}
.news-card{
  display:flex;flex-direction:column;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.news-card:hover{transform:translateY(-3px);border-color:rgba(12,59,63,.4);box-shadow:var(--sh-2);}
.news-card .card-thumb{
  position:relative;
  overflow:hidden;
  background:var(--bg-alt);
}
.news-card .card-thumb img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  transition:transform 260ms var(--ease);
}
.news-card:hover .card-thumb img{transform:scale(1.04);}
.news-card .card-body{padding:24px;display:flex;flex-direction:column;flex:1 1 auto;}
.news-card h3{
  font-size:17.5px;
  line-height:1.5;
  margin:14px 0 10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card h3 a{color:var(--txt-h);}
.news-card h3 a:hover{color:var(--clr-primary);}
.news-card .card-desc{
  font-size:14.5px;
  line-height:1.75;
  color:var(--txt-muted);
  margin:0 0 18px;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card .card-meta{
  margin-top:auto;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:16px;
  border-top:1px solid var(--border);
  font-size:13px;
  color:var(--txt-muted);
}

/* ---------- 空态 ---------- */
.empty-state{
  text-align:center;
  padding:48px 24px;
  background:var(--bg-alt);
  border:1px dashed rgba(12,59,63,.28);
  border-radius:var(--r-lg);
  max-width:560px;
  margin:0 auto;
}
.empty-state svg{width:48px;height:48px;color:rgba(12,59,63,.3);margin:0 auto 16px;}
.empty-state p{font-size:14.5px;color:var(--txt-muted);margin-bottom:20px;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  background:var(--bg-dark);
  color:rgba(247,251,249,.8);
  padding:88px 0 96px;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;left:-10%;right:-10%;bottom:-46px;
  height:92px;
  border-radius:50% 50% 0 0;
  background:rgba(47,167,155,.16);
}
.cta-band::before{
  content:"";
  position:absolute;left:-10%;right:-10%;bottom:-64px;
  height:92px;
  border-radius:50% 50% 0 0;
  background:rgba(255,255,255,.05);
}
.cta-inner{position:relative;z-index:2;text-align:center;max-width:720px;margin:0 auto;}
.cta-inner h2{color:var(--txt-inv);margin-bottom:16px;}
.cta-inner p{font-size:16px;line-height:1.8;margin-bottom:30px;}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--clr-primary-700);
  color:rgba(247,251,249,.78);
  padding:72px 0 0;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr 1.4fr;
  gap:40px 28px;
  padding-bottom:52px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.site-footer .brand{color:var(--txt-inv);justify-self:start;}
.site-footer .brand-name{color:var(--txt-inv);font-size:17px;}
.site-footer .brand-mark{color:var(--clr-teal);}
.footer-brand p{margin:16px 0 0;line-height:1.8;font-size:14px;color:rgba(247,251,249,.72);}
.footer-contact{margin-top:16px !important;font-size:13.5px;}
.footer-contact strong{color:var(--txt-inv);font-weight:600;}
.footer-col h4{
  font-size:13px;
  letter-spacing:.08em;
  color:var(--txt-inv);
  margin-bottom:18px;
  font-weight:600;
}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:11px;}
.footer-col a{
  color:rgba(247,251,249,.78);
  font-size:14px;
  display:inline-block;
  transition:color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-sub p{font-size:13.5px;line-height:1.75;color:rgba(247,251,249,.72);margin-bottom:12px;}
.sub-form{display:flex;gap:10px;align-items:stretch;}
.sub-form input{
  flex:1 1 auto;
  min-width:0;
  height:48px;
  padding:0 14px;
  border-radius:var(--r-md);
  border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.06);
  color:var(--txt-inv);
  font-size:14px;
  transition:border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
}
.sub-form input::placeholder{color:rgba(247,251,249,.5);}
.sub-form input:focus{
  outline:none;
  border-color:var(--clr-teal);
  background:rgba(255,255,255,.1);
  box-shadow:0 0 0 3px rgba(47,167,155,.18);
}
.sub-form .btn{height:48px;padding:0 20px;min-height:48px;}
.footer-note{font-size:12.5px;color:rgba(247,251,249,.55);margin:12px 0 0;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:12px;
  padding:22px 0 26px;
  font-size:13px;
  color:rgba(247,251,249,.6);
}
.footer-bottom a{color:rgba(247,251,249,.68);}
.footer-bottom a:hover{color:#fff;}
.footer-bottom p{margin:0;}

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

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  :root{--sec-y:84px;}
  .article-layout{gap:44px;grid-template-columns:minmax(0,1fr) 280px;}
}
@media (max-width:960px){
  :root{--sec-y:72px;}
  .nav--left,.nav--right,.nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-placeholder{display:block;}
  .nav-wrap{height:64px;grid-template-columns:auto 1fr auto;}
  .brand{justify-self:center;}
  .brand-name{font-size:16px;}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-side{position:static;margin-top:40px;}
  .card-grid--3{grid-template-columns:repeat(2, minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2, minmax(0,1fr));}
  .footer-brand{grid-column:1 / -1;}
  .footer-sub{grid-column:1 / -1;}
  .article-body h2{font-size:26px;}
}
@media (max-width:640px){
  :root{--sec-y:56px;--gutter:18px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px;}
  .article-hero{padding:34px 0 30px;}
  .article-title{font-size:26px;}
  .article-lead{font-size:15.5px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:23px;margin-top:36px;}
  .article-body h3{font-size:19px;}
  .article-figure img{aspect-ratio:4/3;}
  .card-grid--3{grid-template-columns:1fr;}
  .nextprev-grid{grid-template-columns:1fr;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .sub-form{flex-direction:column;}
  .sub-form .btn{width:100%;}
  .breadcrumb .current{max-width:180px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --clr-primary:#0C3B3F;
  --clr-primary-700:#082B2E;
  --clr-primary-100:#E3F0EE;
  --clr-accent:#E9623C;
  --clr-accent-700:#D54F2B;
  --clr-teal:#2FA79B;
  --clr-sand:#D9A661;
  --bg:#FBF8F3;
  --bg-alt:#F2EDE4;
  --txt:#10262A;
  --txt-body:#3A4A4C;
  --txt-muted:#6E7E7F;
  --txt-invert:#F7FBF9;
  --line:rgba(12,59,63,.12);
  --line-strong:rgba(12,59,63,.4);
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-xl:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(12,59,63,.05),0 10px 28px -12px rgba(12,59,63,.18);
  --sh-2:0 2px 6px rgba(12,59,63,.08),0 18px 40px -14px rgba(12,59,63,.26);
  --sh-dark:0 20px 48px -20px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --header-h:72px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--txt-body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block}
a{color:var(--clr-primary);text-decoration:none}
button{font:inherit;cursor:pointer;color:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{color:var(--txt);font-weight:700;letter-spacing:.01em;margin:0}
h1{font-size:clamp(30px,4.6vw,48px);line-height:1.2}
h2{font-size:clamp(24px,3.2vw,34px);line-height:1.25}
h3{font-size:clamp(18px,2vw,22px);line-height:1.35}
p{margin:0 0 20px}
p:last-child{margin-bottom:0}
:focus-visible{outline:2px solid var(--clr-primary);outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:100px 0}
.section--alt{background:var(--bg-alt)}
.section--tight{padding-top:72px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,248,243,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.site-header.is-stuck{border-bottom-color:var(--line)}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  height:var(--header-h);
  transition:height .22s var(--ease);
}
.site-header.is-stuck .header-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:8px;color:var(--clr-primary);white-space:nowrap}
.brand-mark{width:22px;height:22px;flex:0 0 22px;color:var(--clr-primary)}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.01em}
.nav{display:flex;align-items:center;gap:8px}
.nav--right{justify-content:flex-end}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:14.5px;
  font-weight:500;
  color:var(--txt-body);
  white-space:nowrap;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--clr-primary);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-link::before{
  content:"";position:absolute;left:2px;top:50%;width:4px;height:4px;border-radius:50%;
  background:var(--clr-accent);transform:translateY(-50%) scale(0);transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--clr-primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--clr-primary);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active::before{transform:translateY(-50%) scale(1)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-md);
  background:#fff;color:var(--clr-primary);
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-cta{margin-left:8px}

/* ---------- drawer ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(8,43,46,.42);z-index:70;opacity:0;pointer-events:none;transition:opacity .24s var(--ease)}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;left:0;right:0;height:100vh;z-index:80;
  background:var(--bg);display:flex;flex-direction:column;
  transform:translateY(-100%);transition:transform .28s var(--ease);
}
.drawer.is-open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:64px;padding:0 18px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-md);
  background:#fff;font-size:20px;line-height:1;color:var(--clr-primary);
}
.drawer-nav{flex:1;overflow-y:auto;padding:12px 0}
.drawer-link{
  display:flex;align-items:center;height:56px;padding:0 20px;
  font-size:20px;color:var(--txt);border-left:3px solid transparent;
}
.drawer-link.is-active{color:var(--clr-primary);border-left-color:var(--clr-primary);font-weight:600;background:var(--clr-primary-100)}
.drawer-foot{padding:16px 18px 28px;border-top:1px solid var(--line)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:14px 28px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1.5px solid transparent;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.btn--primary{background:var(--clr-accent);color:#fff;box-shadow:0 8px 20px -10px rgba(12,59,63,.5)}
.btn--primary:hover{background:var(--clr-accent-700);transform:translateY(-1px);box-shadow:0 12px 26px -12px rgba(12,59,63,.55)}
.btn--primary:active{transform:none;box-shadow:inset 0 2px 6px rgba(0,0,0,.2)}
.btn--ghost{background:transparent;border-color:var(--clr-primary);color:var(--clr-primary)}
.btn--ghost:hover{background:rgba(12,59,63,.12)}
.btn--ghost:active{background:rgba(12,59,63,.18)}
.btn--light{background:#fff;color:var(--clr-primary)}
.btn--light:hover{background:var(--clr-primary-100);transform:translateY(-1px)}
.btn--sm{padding:10px 20px;min-height:40px;font-size:14px}
.btn--lg{padding:16px 34px;font-size:16px}
.btn--block{width:100%}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--clr-primary)}
.link-arrow svg{transition:transform .22s var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ---------- badge ---------- */
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(12,59,63,.08);color:var(--clr-primary);
  font-size:12.5px;font-weight:600;letter-spacing:.06em;
}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--clr-accent)}
.badge--teal::before{background:var(--clr-teal)}

/* ---------- breadcrumb ---------- */
.breadcrumb{padding:20px 0 0;font-size:14px;color:var(--txt-muted)}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li::after{content:"›";margin-left:8px;color:var(--txt-muted)}
.breadcrumb li:last-child::after{content:"";margin:0}
.breadcrumb a{color:var(--txt-muted)}
.breadcrumb a:hover{color:var(--clr-primary)}
.breadcrumb .current{color:var(--txt);font-weight:600;max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- page hero ---------- */
.page-hero{padding:40px 0 88px;position:relative;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;top:-60px;right:-80px;width:320px;height:320px;
  background-image:radial-gradient(rgba(12,59,63,.12) 1.4px,transparent 1.4px);
  background-size:18px 18px;opacity:.7;pointer-events:none;
}
.page-hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.page-hero h1{margin:18px 0 18px}
.page-hero-lead{font-size:17px;line-height:1.8;color:var(--txt-body);max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.page-hero-media{
  position:relative;border-radius:var(--r-xl);overflow:hidden;
  box-shadow:var(--sh-1);background:var(--bg-alt);aspect-ratio:4/3;
}
.page-hero-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:transform .4s var(--ease)}
.page-hero-media:hover img{transform:scale(1.04)}
.page-hero-media::after{
  content:"";position:absolute;left:-12%;right:-12%;bottom:-52px;height:110px;
  border-radius:50%;border-top:1px solid rgba(251,248,243,.6);pointer-events:none;
}

/* ---------- section head ---------- */
.sec-head{max-width:760px;margin-bottom:48px}
.sec-head h2{margin:14px 0 14px}
.sec-head p{font-size:16.5px;color:var(--txt-muted);line-height:1.8}

/* ---------- feature wide cards ---------- */
.fw-list{display:grid;gap:24px}
.fw-card{
  display:grid;grid-template-columns:260px 1fr;gap:36px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.fw-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.fw-head{display:flex;flex-direction:column;gap:14px}
.fw-icon{
  width:48px;height:48px;border-radius:var(--r-md);display:grid;place-items:center;
  background:var(--clr-primary-100);color:var(--clr-primary);
}
.fw-icon svg{width:24px;height:24px}
.fw-head h3{margin:0}
.fw-head p{font-size:14.5px;line-height:1.75;color:var(--txt-muted);margin:0}
.fw-points{list-style:none;display:grid;gap:14px;align-content:center}
.fw-points li{position:relative;padding-left:24px;font-size:15.5px;line-height:1.75}
.fw-points li::before{content:"";position:absolute;left:4px;top:.66em;width:6px;height:6px;border-radius:50%;background:var(--clr-primary)}
.fw-points li strong{color:var(--txt);font-weight:600}

/* ---------- term list ---------- */
.term-wrap{max-width:900px}
.term-list{border-top:1px solid var(--line)}
.term-row{
  display:grid;grid-template-columns:220px 1fr;gap:36px;
  padding:24px 0;border-bottom:1px solid var(--line);
}
.term{font-size:18px;font-weight:600;color:var(--txt);line-height:1.5}
.term-desc{font-size:15.5px;line-height:1.8;color:var(--txt-body)}

/* ---------- scene strip ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.scene{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 22px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.scene:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.scene-icon{
  width:42px;height:42px;border-radius:var(--r-md);display:grid;place-items:center;
  background:rgba(47,167,155,.12);color:var(--clr-teal);margin-bottom:16px;
}
.scene-icon svg{width:22px;height:22px}
.scene h3{font-size:17px;margin-bottom:10px}
.scene p{font-size:14.5px;line-height:1.75;color:var(--txt-muted);margin:0}

/* ---------- FAQ ---------- */
.faq{max-width:800px;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:16px;
  padding:22px 0;background:none;border:0;text-align:left;
  font-size:18px;font-weight:600;color:var(--txt);line-height:1.5;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--clr-primary)}
.faq-icon{position:relative;flex:0 0 20px;width:20px;height:20px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--clr-primary);border-radius:2px}
.faq-icon::before{left:0;top:9px;width:20px;height:2px}
.faq-icon::after{left:9px;top:0;width:2px;height:20px;transition:transform .26s var(--ease)}
.faq-item.is-open .faq-icon::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq-a-inner{padding:0 0 24px;font-size:15.5px;line-height:1.8;color:var(--txt-body);max-width:680px}

/* ---------- CTA ---------- */
.cta{position:relative;overflow:hidden;background:var(--clr-primary);color:var(--txt-invert);padding:96px 0}
.cta::before{
  content:"";position:absolute;top:-40px;left:-60px;width:280px;height:280px;
  background-image:radial-gradient(rgba(247,251,249,.12) 1.4px,transparent 1.4px);
  background-size:20px 20px;pointer-events:none;
}
.cta::after{
  content:"";position:absolute;left:50%;bottom:-100px;transform:translateX(-50%);
  width:140%;height:170px;border-radius:50%;border-top:1px solid rgba(247,251,249,.22);pointer-events:none;
}
.cta-inner{position:relative;z-index:1;max-width:720px;margin:0 auto;text-align:center}
.cta h2{color:var(--txt-invert);margin-bottom:16px}
.cta p{color:rgba(247,251,249,.82);font-size:16.5px;line-height:1.8}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:32px}
.cta .btn--ghost{border-color:rgba(247,251,249,.6);color:var(--txt-invert)}
.cta .btn--ghost:hover{background:rgba(247,251,249,.14)}

/* ---------- footer ---------- */
.site-footer{background:var(--clr-primary-700);color:rgba(247,251,249,.78);padding:72px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand .brand{color:var(--txt-invert);margin-bottom:18px}
.footer-brand .brand-mark{color:var(--txt-invert)}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(247,251,249,.78);margin-bottom:16px}
.footer-contact{color:rgba(247,251,249,.7)}
.footer-contact strong{color:var(--txt-invert);font-weight:600}
.footer-col h4{color:var(--txt-invert);font-size:15px;margin-bottom:18px;font-weight:600}
.footer-col ul{list-style:none;display:grid;gap:12px}
.footer-col a{color:rgba(247,251,249,.78);transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-sub p{font-size:13.5px;line-height:1.75;color:rgba(247,251,249,.72)}
.sub-form{display:flex;gap:8px;margin:14px 0 10px}
.sub-form input{
  flex:1;min-width:0;height:48px;padding:0 14px;border-radius:var(--r-md);
  border:1px solid rgba(247,251,249,.28);background:rgba(247,251,249,.06);
  color:var(--txt-invert);font-size:14px;
}
.sub-form input::placeholder{color:rgba(247,251,249,.5)}
.sub-form input:focus{outline:none;border-color:var(--clr-teal);box-shadow:0 0 0 3px rgba(47,167,155,.22)}
.footer-note{font-size:13px;color:rgba(247,251,249,.6)}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(247,251,249,.16);
  padding:22px 0 26px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(247,251,249,.6);
}

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

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px}
  .footer-sub{grid-column:1 / -1}
  .sub-form{max-width:420px}
}
@media (max-width:960px){
  .section{padding:72px 0}
  .nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{grid-template-columns:44px 1fr 44px;gap:12px}
  .header-inner .brand{justify-self:center}
  .header-placeholder{width:44px;height:44px;justify-self:end}
  .page-hero{padding:28px 0 64px}
  .page-hero-grid{grid-template-columns:1fr;gap:36px}
  .page-hero-media{order:2}
  .fw-card{grid-template-columns:1fr;gap:20px}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .term-row{grid-template-columns:180px 1fr;gap:24px}
  .cta{padding:72px 0}
}
@media (max-width:640px){
  body{font-size:16px}
  .container{padding:0 18px}
  .section{padding:56px 0}
  .brand-name{font-size:16px}
  .hero-actions .btn{width:100%}
  .scene-grid{grid-template-columns:1fr}
  .term-row{grid-template-columns:1fr;gap:8px;padding:20px 0}
  .term{font-size:17px}
  .fw-card{padding:22px}
  .faq-q{font-size:16.5px;padding:18px 0}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:8px}
  .cta-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --clr-primary:#0C3B3F;
  --clr-primary-700:#082B2E;
  --clr-primary-100:#E3F0EE;
  --clr-accent:#E9623C;
  --clr-accent-700:#D54F2B;
  --clr-teal:#2FA79B;
  --clr-sand:#D9A661;

  --bg:#FBF8F3;
  --bg-alt:#F2EDE4;
  --bg-dark:#0C3B3F;

  --txt:#10262A;
  --txt-body:#3A4A4C;
  --txt-muted:#6E7E7F;
  --txt-inverse:#F7FBF9;

  --border:rgba(12,59,63,.12);
  --border-strong:rgba(12,59,63,.24);

  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-xl:24px;
  --r-pill:999px;

  --sh-1:0 1px 2px rgba(12,59,63,.05), 0 10px 28px -12px rgba(12,59,63,.18);
  --sh-2:0 2px 6px rgba(12,59,63,.08), 0 18px 40px -14px rgba(12,59,63,.26);
  --sh-dark:0 20px 48px -20px rgba(0,0,0,.45);

  --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; --sp-10:120px;

  --header-h:72px;
  --header-h-stuck:64px;
}

/* ============ reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body,h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
button,input{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
a{color:inherit;text-decoration:none;}
table{border-collapse:collapse;width:100%;}

body{
  background:var(--bg);
  color:var(--txt-body);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{color:var(--txt);font-weight:700;letter-spacing:.01em;line-height:1.2;}
h1{font-size:clamp(30px,4.2vw,48px);}
h2{font-size:clamp(24px,3vw,34px);}
h3{font-size:clamp(18px,2vw,22px);}
p{font-size:17px;line-height:1.75;}

::selection{background:rgba(233,98,60,.22);}

:focus-visible{outline:2px solid var(--clr-primary);outline-offset:2px;border-radius:4px;}

/* ============ 容器与栅格 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.measure{max-width:800px;}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;}

.section{padding:100px 0;}
.section--tight{padding:80px 0;}
.section--alt{background:var(--bg-alt);}
.section--dark{background:var(--bg-dark);color:var(--txt-inverse);}
.section--dark h2,.section--dark h3{color:var(--txt-inverse);}
.section--dark p{color:rgba(247,251,249,.82);}

.section-head{max-width:720px;margin-bottom:48px;}
.section-head .eyebrow{margin-bottom:16px;}
.section-head p{margin-top:16px;color:var(--txt-muted);}

/* ============ 组件：徽章 / 眉标 ============ */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:rgba(12,59,63,.08);color:var(--clr-primary);
  font-size:12.5px;font-weight:600;letter-spacing:.06em;line-height:1;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--clr-accent);}
.badge{
  display:inline-block;padding:5px 12px;border-radius:var(--r-pill);
  background:var(--clr-primary-100);color:var(--clr-primary);
  font-size:12.5px;font-weight:600;letter-spacing:.06em;line-height:1.4;
}
.badge--accent{background:rgba(233,98,60,.12);color:var(--clr-accent-700);}
.badge--teal{background:rgba(47,167,155,.12);color:#1F7A71;}

/* ============ 组件：按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:14px 28px;border-radius:var(--r-md);
  font-size:15.5px;font-weight:600;letter-spacing:.01em;
  transition:transform 200ms var(--ease),background-color 200ms var(--ease),box-shadow 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease);
  border:1.5px solid transparent;
}
.btn--primary{background:var(--clr-accent);color:#fff;box-shadow:0 8px 20px -8px rgba(12,59,63,.3);}
.btn--primary:hover{background:var(--clr-accent-700);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.18);}
.btn--ghost{background:transparent;border-color:var(--clr-primary);color:var(--clr-primary);}
.btn--ghost:hover{background:rgba(12,59,63,.12);}
.btn--ghost:active{background:rgba(12,59,63,.18);}
.btn--light{background:#fff;color:var(--clr-primary);}
.btn--light:hover{background:var(--clr-primary-100);transform:translateY(-1px);}
.btn--sm{min-height:40px;padding:10px 20px;font-size:14px;}
.btn--lg{min-height:54px;padding:16px 34px;font-size:16.5px;}
.btn[disabled]{opacity:.5;cursor:not-allowed;}

.link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--clr-primary);font-weight:600;font-size:15px;}
.link-arrow svg{transition:transform 200ms var(--ease);}
.link-arrow:hover svg{transform:translateX(4px);}

/* ============ 组件：卡片 ============ */
.card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(12,59,63,.4);}

.bar-card{
  display:grid;grid-template-columns:auto 1fr;gap:24px;align-items:start;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.bar-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(12,59,63,.4);}
.bar-card__icon{
  width:52px;height:52px;border-radius:var(--r-md);flex:none;
  display:grid;place-items:center;background:var(--clr-primary-100);color:var(--clr-primary);
}
.bar-card h3{margin-bottom:10px;font-size:20px;}
.bar-card p{font-size:15.5px;color:var(--txt-body);}

/* ============ 图片 ============ */
.media{border-radius:var(--r-xl);overflow:hidden;background:var(--bg-alt);}
.media img{width:100%;height:100%;object-fit:cover;transition:transform 260ms var(--ease);}
.media:hover img{transform:scale(1.04);}
.media--hero{aspect-ratio:4/3;}
.media--wide{aspect-ratio:16/9;}
.media--tall{aspect-ratio:3/4;}
figcaption{margin-top:12px;text-align:center;font-size:13px;color:var(--txt-muted);}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(251,248,243,.92);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.site-header.is-stuck{border-bottom-color:var(--border);box-shadow:0 8px 24px -18px rgba(12,59,63,.5);}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  height:var(--header-h);transition:height 220ms var(--ease);
}
.site-header.is-stuck .header-inner{height:var(--header-h-stuck);}

.nav{display:flex;align-items:center;gap:26px;}
.nav--right{justify-content:flex-end;}
.nav-link{
  position:relative;font-size:14.5px;font-weight:500;color:var(--txt-body);
  padding:6px 0;transition:color 180ms var(--ease);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--clr-primary);transform:scaleX(0);transform-origin:left;
  transition:transform 220ms var(--ease);
}
.nav-link:hover{color:var(--clr-primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--clr-primary);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--clr-accent);
}

.brand{display:inline-flex;align-items:center;gap:10px;color:var(--clr-primary);}
.brand-mark{width:22px;height:22px;flex:none;color:var(--clr-primary);}
.brand-name{font-size:18px;font-weight:700;white-space:nowrap;color:var(--txt);letter-spacing:.01em;}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-md);
  align-items:center;justify-content:center;color:var(--clr-primary);
}
.nav-toggle:hover{background:rgba(12,59,63,.08);}
.header-right-slot{display:none;width:44px;height:44px;}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:90;display:none;
  background:var(--clr-primary-700);
}
.drawer.is-open{display:block;}
.drawer__inner{
  height:100%;display:flex;flex-direction:column;
  padding:24px 24px 32px;background:var(--bg);
  overflow-y:auto;
}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer__close{width:44px;height:44px;display:grid;place-items:center;border-radius:var(--r-md);color:var(--clr-primary);}
.drawer__close:hover{background:rgba(12,59,63,.08);}
.drawer__links{flex:1;}
.drawer__links a{
  display:block;padding:14px 16px;font-size:20px;line-height:1.4;color:var(--txt);
  border-left:3px solid transparent;border-bottom:1px solid var(--border);
}
.drawer__links a.is-active{color:var(--clr-primary);border-left-color:var(--clr-primary);font-weight:600;}
.drawer__cta{margin-top:24px;}
.drawer__cta .btn{width:100%;}

/* ============ 面包屑 ============ */
.breadcrumb{padding:20px 0 0;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--txt-muted);}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"›";color:var(--txt-muted);}
.breadcrumb a:hover{color:var(--clr-primary);}
.breadcrumb [aria-current="page"]{color:var(--txt-body);font-weight:600;max-width:52vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 页头 ============ */
.page-hero{padding:40px 0 88px;}
.page-hero__grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:center;}
.page-hero h1{margin:20px 0 20px;}
.page-hero__lead{font-size:17px;line-height:1.8;color:var(--txt-body);max-width:56ch;}
.page-hero__points{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.page-hero__points span{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--txt-body);
  background:#fff;border:1px solid var(--border);border-radius:var(--r-pill);padding:8px 16px;
}
.page-hero__points span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--clr-teal);}
.page-hero__media{position:relative;}
.tide-arc{
  position:absolute;left:-4%;right:-4%;bottom:-28px;height:56px;
  border-radius:50% 50% 0 0 / 100% 100% 0 0;
  background:rgba(47,167,155,.14);
  z-index:-1;
}
.float-card{
  position:absolute;right:-16px;bottom:24px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--sh-2);padding:18px 22px;max-width:220px;
}
.float-card strong{display:block;font-size:26px;color:var(--clr-accent);line-height:1.1;}
.float-card span{display:block;margin-top:6px;font-size:13px;color:var(--txt-muted);line-height:1.5;}

/* ============ 时间轴 ============ */
.timeline{position:relative;padding:8px 0;}
.timeline::before{
  content:"";position:absolute;top:0;bottom:0;left:50%;width:2px;
  background:rgba(12,59,63,.18);transform:translateX(-1px);
}
.step{position:relative;width:50%;padding-right:48px;margin-bottom:48px;}
.step:nth-child(even){margin-left:50%;padding-right:0;padding-left:48px;}
.step:last-child{margin-bottom:0;}
.step__dot{
  position:absolute;top:34px;right:-7px;width:14px;height:14px;border-radius:50%;
  background:var(--clr-accent);border:3px solid var(--bg);
}
.step:nth-child(even) .step__dot{right:auto;left:-7px;}
.step__card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:26px 28px;box-shadow:var(--sh-1);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.step__card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(12,59,63,.4);}
.step__num{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--clr-accent);margin-bottom:10px;
}
.step__card h3{font-size:20px;margin-bottom:10px;}
.step__card p{font-size:15.5px;line-height:1.8;color:var(--txt-body);}
.step__meta{margin-top:14px;padding-top:14px;border-top:1px dashed rgba(12,59,63,.18);font-size:13.5px;color:var(--txt-muted);}

/* ============ 准备清单 ============ */
.prepare__grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:56px;align-items:center;}
.check-list{display:grid;gap:20px;margin-top:8px;}
.check-list li{
  position:relative;padding-left:40px;font-size:15.5px;line-height:1.8;color:var(--txt-body);
}
.check-list li strong{display:block;font-size:17px;color:var(--txt);margin-bottom:4px;font-weight:600;}
.check-list li::before{
  content:"";position:absolute;left:0;top:6px;width:22px;height:22px;border-radius:50%;
  background:var(--clr-primary-100);
}
.check-list li::after{
  content:"";position:absolute;left:7px;top:13px;width:8px;height:4px;
  border-left:2px solid var(--clr-primary);border-bottom:2px solid var(--clr-primary);
  transform:rotate(-45deg);
}

/* ============ 数据条（深色区） ============ */
.metric-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:rgba(247,251,249,.18);border-radius:var(--r-lg);overflow:hidden;margin-bottom:48px;}
.metric{background:var(--bg-dark);padding:32px 28px;}
.metric strong{display:block;font-size:clamp(30px,3.4vw,44px);font-weight:700;color:var(--clr-accent);line-height:1.1;}
.metric span{display:block;margin-top:10px;font-size:14px;color:rgba(247,251,249,.78);line-height:1.7;}
.dark-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.dark-card{
  background:rgba(247,251,249,.06);border:1px solid rgba(247,251,249,.16);
  border-radius:var(--r-lg);padding:26px;box-shadow:var(--sh-dark);
}
.dark-card h3{font-size:18px;margin-bottom:10px;}
.dark-card p{font-size:15px;line-height:1.8;}
.dark-card .badge{margin-bottom:14px;}
.dark-note{margin-top:32px;font-size:13.5px;color:rgba(247,251,249,.66);}

/* ============ FAQ ============ */
.faq-list{max-width:800px;border-top:1px solid var(--border);}
.faq-item{border-bottom:1px solid var(--border);}
.faq-trigger{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:22px 0;text-align:left;font-size:18px;font-weight:600;color:var(--txt);
  transition:color 180ms var(--ease);
}
.faq-trigger:hover{color:var(--clr-primary);}
.faq-icon{position:relative;flex:none;width:18px;height:18px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--clr-primary);border-radius:2px;
  transition:transform 240ms var(--ease),opacity 240ms var(--ease);
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-panel{display:grid;grid-template-rows:0fr;transition:grid-template-rows 260ms var(--ease);}
.faq-item.is-open .faq-panel{grid-template-rows:1fr;}
.faq-panel__inner{overflow:hidden;}
.faq-panel p{padding-bottom:24px;font-size:15.5px;line-height:1.8;color:var(--txt-body);max-width:66ch;}

/* ============ CTA ============ */
.cta{position:relative;overflow:hidden;}
.cta::after{
  content:"";position:absolute;left:50%;bottom:-34px;transform:translateX(-50%);
  width:min(1200px,140%);height:60px;border-radius:50% 50% 0 0 / 100% 100% 0 0;
  background:rgba(47,167,155,.16);
}
.cta__inner{position:relative;z-index:1;text-align:center;max-width:720px;margin:0 auto;}
.cta h2{margin-bottom:18px;}
.cta p{font-size:16.5px;color:rgba(247,251,249,.84);max-width:60ch;margin:0 auto;}
.cta__actions{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;margin-top:36px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--clr-primary-700);color:var(--txt-inverse);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1.4fr;gap:40px;}
.footer-brand .brand{color:var(--txt-inverse);margin-bottom:18px;}
.footer-brand .brand-name{color:var(--txt-inverse);}
.footer-brand .brand-mark{color:var(--clr-teal);}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(247,251,249,.78);max-width:34ch;}
.footer-contact{margin-top:16px;font-size:14px;color:rgba(247,251,249,.78);}
.footer-contact strong{color:var(--txt-inverse);}
.footer-col h4{font-size:15px;color:var(--txt-inverse);margin-bottom:18px;}
.footer-col ul{display:grid;gap:12px;}
.footer-col a{font-size:14px;color:rgba(247,251,249,.78);transition:color 180ms var(--ease),transform 180ms var(--ease);display:inline-block;}
.footer-col a:hover{color:#fff;transform:translateX(-2px);}
.footer-sub p{font-size:14px;color:rgba(247,251,249,.78);margin-bottom:16px;}
.sub-form{display:flex;gap:10px;}
.sub-form input{
  flex:1;min-width:0;height:48px;padding:0 16px;border-radius:var(--r-md);
  border:1px solid rgba(247,251,249,.24);background:rgba(247,251,249,.08);color:var(--txt-inverse);
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.sub-form input::placeholder{color:rgba(247,251,249,.55);}
.sub-form input:focus{outline:none;border-color:var(--clr-teal);box-shadow:0 0 0 3px rgba(47,167,155,.24);}
.sub-form .btn{padding:0 22px;min-height:48px;}
.footer-note{margin-top:12px;font-size:13px;color:rgba(247,251,249,.6);}
.skip-link{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);}
.footer-bottom{
  margin-top:64px;padding:22px 0;border-top:1px solid rgba(247,251,249,.16);
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(247,251,249,.72);
}
.footer-legal{display:flex;flex-wrap:wrap;gap:20px;}
.footer-legal a:hover{color:#fff;}

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

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .page-hero__grid{gap:40px;}
}
@media (max-width:960px){
  .section{padding:72px 0;}
  .section--tight{padding:60px 0;}
  .nav{display:none;}
  .header-inner{grid-template-columns:44px 1fr 44px;}
  .nav-toggle{display:inline-flex;justify-content:flex-start;}
  .header-right-slot{display:block;}
  .page-hero{padding:24px 0 64px;}
  .page-hero__grid{grid-template-columns:1fr;gap:36px;}
  .float-card{right:12px;bottom:-18px;padding:14px 18px;}
  .prepare__grid{grid-template-columns:1fr;gap:36px;}
  .metric-row{grid-template-columns:1fr;}
  .metric{padding:24px;}
  .dark-cards{grid-template-columns:1fr;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-sub{grid-column:1 / -1;}
  .step,.step:nth-child(even){
    width:100%;margin-left:0;padding:0 0 0 40px;
  }
  .timeline::before{left:6px;transform:none;}
  .step__dot{top:30px;left:-1px;right:auto;}
  .step:nth-child(even) .step__dot{left:-1px;}
}
@media (max-width:640px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .grid-2,.grid-3{grid-template-columns:1fr;}
  .step{margin-bottom:28px;}
  .step__card{padding:22px;}
  .bar-card{grid-template-columns:1fr;gap:16px;padding:22px;}
  .card{padding:20px;}
  .btn{width:100%;}
  .cta__actions .btn{width:100%;}
  .float-card{position:static;margin-top:16px;max-width:none;}
  .tide-arc{display:none;}
  .footer-grid{grid-template-columns:1fr;}
  .sub-form{flex-direction:column;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .breadcrumb [aria-current="page"]{max-width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category3 */
/* ===== 设计变量 ===== */
:root{
  --clr-primary:#0C3B3F;
  --clr-primary-700:#082B2E;
  --clr-primary-100:#E3F0EE;
  --clr-accent:#E9623C;
  --clr-accent-700:#D54F2B;
  --clr-teal:#2FA79B;
  --clr-teal-100:#E4F4F1;
  --clr-sand:#D9A661;
  --bg-page:#FBF8F3;
  --bg-alt:#F2EDE4;
  --bg-dark:#0C3B3F;
  --clr-ink:#10262A;
  --clr-text:#3A4A4C;
  --clr-muted:#6E7E7F;
  --clr-invert:#F7FBF9;
  --line:rgba(12,59,63,.12);
  --line-strong:rgba(12,59,63,.24);
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-xl:24px;
  --r-pill:999px;
  --sh-rest:0 1px 2px rgba(12,59,63,.05),0 10px 28px -12px rgba(12,59,63,.18);
  --sh-hover:0 2px 6px rgba(12,59,63,.08),0 18px 40px -14px rgba(12,59,63,.26);
  --sh-dark:0 20px 48px -20px rgba(0,0,0,.45);
  --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; --sp-10:120px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --t-fast:180ms;
  --t-base:240ms;
  --container:1200px;
}

/* ===== reset ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--clr-text);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
svg{flex:none}
:focus-visible{outline:2px solid var(--clr-primary);outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ===== 基础排版 ===== */
h1,h2,h3,h4{color:var(--clr-ink);font-weight:700;letter-spacing:.01em;line-height:1.25}
h1{font-size:clamp(30px,4.2vw,48px);line-height:1.2}
h2{font-size:clamp(24px,3vw,34px);line-height:1.25}
h3{font-size:clamp(18px,2vw,22px);line-height:1.35}
p{font-size:17px}
.lede{font-size:17px;line-height:1.8;color:var(--clr-text)}
.muted{color:var(--clr-muted);font-size:14px}

/* ===== 容器 ===== */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:100px 0}
.section--alt{background:var(--bg-alt)}
.section--dark{background:var(--bg-dark);color:var(--clr-invert)}
.section--dark h2,.section--dark h3{color:var(--clr-invert)}
.section-head{max-width:760px;margin-bottom:var(--sp-7)}
.section-head p{margin-top:var(--sp-4);color:var(--clr-muted)}
.section--dark .section-head p{color:rgba(247,251,249,.78)}

/* ===== 徽章 / 眉标 ===== */
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(12,59,63,.08);color:var(--clr-primary);
  font-size:12.5px;font-weight:600;letter-spacing:.06em;
}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--clr-teal)}
.badge--accent{background:rgba(233,98,60,.12);color:var(--clr-accent-700)}
.badge--accent::before{background:var(--clr-accent)}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:14px 28px;border-radius:var(--r-md);
  border:1.5px solid transparent;font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;transition:transform var(--t-fast) var(--ease),background-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease),color var(--t-fast) var(--ease);
}
.btn--primary{background:var(--clr-accent);color:#fff;box-shadow:0 10px 26px -14px rgba(12,59,63,.55)}
.btn--primary:hover{background:var(--clr-accent-700);transform:translateY(-1px)}
.btn--primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.2)}
.btn--ghost{background:transparent;border-color:var(--clr-primary);color:var(--clr-primary)}
.btn--ghost:hover{background:rgba(12,59,63,.08)}
.btn--ghost:active{background:rgba(12,59,63,.14)}
.btn--light{background:#fff;color:var(--clr-primary)}
.btn--light:hover{background:var(--clr-primary-100);transform:translateY(-1px)}
.btn--sm{padding:10px 20px;font-size:14px;min-height:40px}
.btn--lg{padding:16px 34px;font-size:16px}
.btn--block{width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--clr-primary);font-weight:600;font-size:15px}
.link-more svg{transition:transform var(--t-base) var(--ease)}
.link-more:hover svg{transform:translateX(4px)}
.link-more:hover{color:var(--clr-accent-700)}

/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,248,243,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color var(--t-base) var(--ease),box-shadow var(--t-base) var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 24px -18px rgba(12,59,63,.5)}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;
  height:72px;transition:height var(--t-base) var(--ease);
}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;justify-self:center}
.brand-mark{width:22px;height:22px;color:var(--clr-primary)}
.brand-name{font-size:18px;font-weight:700;color:var(--clr-ink);letter-spacing:.01em;white-space:nowrap}
.nav{display:flex;align-items:center;gap:22px}
.nav--left{justify-self:start}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:8px 2px;font-size:14.5px;font-weight:500;color:var(--clr-text);
  transition:color var(--t-fast) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:2px;height:2px;width:0;
  background:var(--clr-primary);transition:width var(--t-base) var(--ease);
}
.nav-link:hover{color:var(--clr-primary)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--clr-primary);font-weight:600}
.nav-link.is-active::after{width:100%}
.nav-link.is-active::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--clr-accent)}
.header-right{display:flex;align-items:center;gap:18px;justify-self:end}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-md);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--clr-primary);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--clr-primary);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.header-holder{display:none;width:44px;height:44px}

/* 抽屉 */
.drawer{
  position:fixed;inset:0;z-index:80;background:var(--bg-page);
  display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity var(--t-base) var(--ease),transform var(--t-base) var(--ease),visibility var(--t-base);
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:72px;padding:0 24px;border-bottom:1px solid var(--line)}
.drawer-close{width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-md);background:#fff;cursor:pointer;font-size:20px;color:var(--clr-primary);line-height:1}
.drawer-nav{display:flex;flex-direction:column;padding:12px 24px;overflow-y:auto;flex:1}
.drawer-nav a{
  font-size:20px;line-height:56px;color:var(--clr-ink);border-bottom:1px solid var(--line);
  border-left:3px solid transparent;padding-left:12px;transition:color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.drawer-nav a:hover{color:var(--clr-primary)}
.drawer-nav a.is-active{border-left-color:var(--clr-primary);color:var(--clr-primary);font-weight:600}
.drawer-foot{padding:16px 24px 28px;border-top:1px solid var(--line)}

/* ===== 面包屑 ===== */
.breadcrumb{padding:20px 0 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--clr-muted)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"›";color:var(--clr-muted)}
.breadcrumb a{color:var(--clr-muted)}
.breadcrumb a:hover{color:var(--clr-primary)}
.breadcrumb .current{color:var(--clr-ink);font-weight:600;max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ===== 页头 ===== */
.page-hero{padding:32px 0 80px;position:relative;overflow:hidden}
.page-hero::after{
  content:"";position:absolute;left:50%;bottom:-46px;transform:translateX(-50%);
  width:140%;height:80px;border-radius:50%;border-top:1px solid rgba(12,59,63,.14);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.hero-grid .badge{margin-bottom:var(--sp-5)}
.hero-copy h1{margin-bottom:var(--sp-5)}
.hero-copy .lede{max-width:620px}
.hero-figure{position:relative}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-xl);
  background:var(--bg-alt);box-shadow:var(--sh-rest);
}
.hero-note{
  position:absolute;left:-18px;bottom:22px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);padding:14px 18px;box-shadow:var(--sh-rest);max-width:230px;
}
.hero-note strong{display:block;font-size:22px;color:var(--clr-accent);line-height:1.2}
.hero-note span{font-size:13px;color:var(--clr-muted)}

/* ===== 对照卡 ===== */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}
.compare-card{
  border-radius:var(--r-lg);padding:32px;border:1px solid var(--line);
  background:#fff;box-shadow:var(--sh-rest);
  transition:transform var(--t-base) var(--ease),box-shadow var(--t-base) var(--ease),border-color var(--t-base) var(--ease);
}
.compare-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:rgba(12,59,63,.4)}
.compare-card--primary{background:var(--clr-primary-100);border-color:rgba(12,59,63,.18)}
.compare-card--teal{background:var(--clr-teal-100);border-color:rgba(47,167,155,.28)}
.compare-card h3{display:flex;align-items:center;gap:10px;margin-bottom:var(--sp-5)}
.compare-card h3 svg{width:24px;height:24px}
.compare-card--primary h3 svg{color:var(--clr-primary)}
.compare-card--teal h3 svg{color:var(--clr-teal)}
.compare-list li{
  position:relative;padding-left:22px;font-size:15.5px;line-height:1.75;
  color:var(--clr-text);padding-bottom:12px;
}
.compare-list li:last-child{padding-bottom:0}
.compare-list li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;
}
.compare-card--primary .compare-list li::before{background:var(--clr-primary)}
.compare-card--teal .compare-list li::before{background:var(--clr-teal)}
.compare-foot{margin-top:var(--sp-5);padding-top:var(--sp-5);border-top:1px dashed rgba(12,59,63,.18);font-size:14px;color:var(--clr-muted)}
.compare-visual{margin-top:28px}
.compare-visual img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-lg);background:var(--bg-alt)}

/* ===== 横向要点条 ===== */
.strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;background:var(--line);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;
}
.strip-item{background:#fff;padding:28px 24px;transition:background-color var(--t-fast) var(--ease)}
.strip-item:hover{background:var(--clr-primary-100)}
.strip-item svg{width:30px;height:30px;color:var(--clr-primary);margin-bottom:14px}
.strip-item h3{font-size:17px;margin-bottom:8px}
.strip-item p{font-size:14.5px;line-height:1.7;color:var(--clr-muted)}

/* ===== FAQ 手风琴 ===== */
.faq-wrap{display:grid;grid-template-columns:340px 1fr;gap:64px;align-items:start}
.faq-aside{position:sticky;top:96px}
.faq-aside p{margin-top:var(--sp-4);color:var(--clr-muted);font-size:15.5px}
.faq{max-width:800px;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:16px;
  padding:20px 0;background:none;border:0;text-align:left;cursor:pointer;
  font-size:18px;font-weight:600;color:var(--clr-ink);
  transition:color var(--t-fast) var(--ease);
}
.faq-q:hover{color:var(--clr-primary)}
.faq-icon{
  position:relative;width:20px;height:20px;flex:none;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--clr-primary);border-radius:2px;
  transition:transform var(--t-base) var(--ease),opacity var(--t-base) var(--ease);
}
.faq-icon::before{left:0;top:9px;width:20px;height:2px}
.faq-icon::after{left:9px;top:0;width:2px;height:20px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms var(--ease)}
.faq-a p{margin:0 0 22px;font-size:15.5px;line-height:1.8;color:var(--clr-text);max-width:720px}
.faq-item.is-open .faq-q{color:var(--clr-primary)}

/* ===== CTA ===== */
.cta{position:relative;overflow:hidden;text-align:center;padding:96px 0}
.cta::after{
  content:"";position:absolute;left:50%;bottom:-52px;transform:translateX(-50%);
  width:150%;height:90px;border-radius:50%;border-top:1px solid rgba(247,251,249,.24);
  pointer-events:none;
}
.cta h2{margin-bottom:var(--sp-4)}
.cta p{color:rgba(247,251,249,.8);max-width:620px;margin:0 auto var(--sp-6)}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;justify-content:center}

/* ===== 页脚 ===== */
.site-footer{background:var(--bg-dark);color:var(--clr-invert);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1.4fr;gap:40px}
.site-footer .brand-name{color:var(--clr-invert)}
.site-footer .brand-mark{color:var(--clr-invert)}
.footer-brand p{margin-top:var(--sp-4);font-size:14px;line-height:1.8;color:rgba(247,251,249,.78)}
.footer-contact{margin-top:var(--sp-4);font-size:13.5px;color:rgba(247,251,249,.68)}
.footer-contact strong{color:var(--clr-invert);font-weight:600}
.footer-col h4{font-size:15px;color:var(--clr-invert);margin-bottom:var(--sp-4)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(247,251,249,.78);transition:color var(--t-fast) var(--ease),transform var(--t-fast) var(--ease);display:inline-block}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-sub p{font-size:13.5px;color:rgba(247,251,249,.72);margin-bottom:var(--sp-4)}
.sub-form{display:flex;gap:8px;flex-wrap:wrap}
.sub-form input{
  flex:1 1 150px;min-height:44px;padding:12px 14px;border-radius:var(--r-md);
  border:1px solid rgba(247,251,249,.28);background:rgba(255,255,255,.06);
  color:var(--clr-invert);font-size:14px;
}
.sub-form input::placeholder{color:rgba(247,251,249,.5)}
.sub-form input:focus{outline:none;border-color:var(--clr-teal);box-shadow:0 0 0 3px rgba(47,167,155,.22)}
.footer-note{margin-top:10px;font-size:12.5px;color:rgba(247,251,249,.55)}
.footer-bottom{
  margin-top:64px;padding:24px 0;border-top:1px solid rgba(247,251,249,.16);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(247,251,249,.66);
}
.footer-bottom a{color:rgba(247,251,249,.66)}
.footer-bottom a:hover{color:#fff}

/* ===== 入场动画 ===== */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 600ms var(--ease),transform 600ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ===== 响应式 ===== */
@media (max-width:1200px){
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr;gap:32px}
  .faq-wrap{grid-template-columns:280px 1fr;gap:48px}
}
@media (max-width:960px){
  .section{padding:72px 0}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-figure{order:2}
  .hero-note{left:auto;right:16px;bottom:16px}
  .nav--left,.nav--right{display:none}
  .header-inner{grid-template-columns:44px 1fr 44px;gap:8px}
  .nav-toggle{display:inline-flex;grid-column:1;justify-self:start}
  .brand{grid-column:2;justify-self:center}
  .header-right{display:none}
  .header-holder{display:block;grid-column:3;justify-self:end;width:44px;height:44px}
  .compare{grid-template-columns:1fr}
  .strip{grid-template-columns:repeat(2,1fr)}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .cta{padding:72px 0}
  .footer-bottom{flex-direction:column;align-items:flex-start;text-align:left}
}
@media (max-width:640px){
  body{font-size:16px}
  .container{padding:0 18px}
  .section{padding:56px 0}
  .page-hero{padding:24px 0 56px}
  .brand-name{font-size:16px}
  .hero-note{position:static;max-width:none;margin-top:16px}
  .compare-card{padding:22px}
  .strip{grid-template-columns:1fr}
  .strip-item{padding:22px 20px}
  .faq-q{font-size:16.5px;padding:18px 0}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .site-footer{padding:56px 0 0}
  .footer-bottom{margin-top:40px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}