/* roulang page: index */
:root{
  --c-ink:#0E4F4A;
  --c-teal:#17A398;
  --c-teal-deep:#0A3A36;
  --c-amber:#F2A03D;
  --c-coral:#E8654A;
  --c-bg:#F6F3EE;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFF3F1;
  --c-line:#E3DED4;
  --c-text:#22302F;
  --c-text-2:#5A6B69;
  --c-footer:#0A2E2B;
  --grad-brand:linear-gradient(115deg,#0E4F4A 0%,#16786F 55%,#17A398 100%);
  --grad-accent:linear-gradient(90deg,#17A398 0%,#F2A03D 100%);
  --r-s:10px; --r-m:16px; --r-l:24px; --r-xl:32px; --r-pill:999px;
  --sh-1:0 4px 14px rgba(14,79,74,.06);
  --sh-2:0 12px 32px rgba(14,79,74,.10);
  --sh-3:0 20px 48px rgba(14,79,74,.16);
  --sec:96px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  font-size:16px; line-height:1.85; color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-ink);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--c-amber)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--c-amber);outline-offset:2px;border-radius:6px}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-text);letter-spacing:-.01em}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.2;font-weight:700}
h2{font-size:clamp(24px,2.8vw,36px);line-height:1.3;font-weight:700}
h3{font-size:22px;line-height:1.45;font-weight:600}
h4{font-size:17px;line-height:1.5;font-weight:600}
p{margin:0 0 16px}
ul{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}
.section{padding:var(--sec) 0}
.section--tight{padding:64px 0}
.section-head{margin-bottom:40px}
.section-head p{max-width:640px;color:var(--c-text-2);font-size:16px;margin:12px 0 0}
.dark-band{background:var(--c-teal-deep);color:#fff;position:relative}
.dark-band::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad-accent)}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.88);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--c-line);transition:box-shadow .26s var(--ease),background-color .26s var(--ease)}
.site-header.is-scrolled{box-shadow:var(--sh-1);background:rgba(255,255,255,.98)}
.nav-wrap{display:flex;align-items:center;gap:24px;height:64px}
.logo{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.logo-mark{width:36px;height:36px;border-radius:12px;background:var(--grad-brand);display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-1);flex:0 0 auto}
.logo-mark span{width:14px;height:14px;border:2px solid #fff;border-radius:4px;transform:rotate(45deg);display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--c-text)}
.brand-sub{font-size:11px;color:var(--c-text-2);letter-spacing:.04em}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--c-text-2);padding:6px 0;display:inline-block}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--grad-brand);border-radius:2px;transition:width .22s var(--ease)}
.nav-link:hover{color:var(--c-ink)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--c-ink);font-weight:600}
.nav-link.is-active::after{width:100%}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.command-search{position:relative;display:flex;align-items:center;gap:10px;width:300px;height:40px;padding:0 10px 0 14px;background:var(--c-surface-2);border:1px solid transparent;border-radius:var(--r-pill);transition:border-color .22s var(--ease),background-color .22s var(--ease)}
.command-search:focus-within{background:#fff;border-color:var(--c-ink)}
.command-search i{font-size:14px;color:var(--c-text-2)}
.command-search input{flex:1;border:0;background:transparent;font-size:14px;color:var(--c-text);outline:none;min-width:0}
.command-search input::placeholder{color:var(--c-text-2)}
.command-search kbd{font-size:13px;padding:2px 8px;border-radius:6px;background:#fff;border:1px solid var(--c-line);color:var(--c-text-2);font-family:inherit}
.icon-btn{width:36px;height:36px;border-radius:50%;border:1px solid transparent;background:transparent;color:var(--c-text-2);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:background-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease)}
.icon-btn:hover{background:var(--c-surface-2);color:var(--c-ink)}
.icon-btn:active{transform:scale(.96)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;border-radius:var(--r-pill);border:1px solid transparent;cursor:pointer;transition:transform .24s var(--ease),box-shadow .24s var(--ease),background-color .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease),filter .24s var(--ease)}
.btn-primary{background:var(--grad-brand);color:#fff;min-height:48px;padding:0 26px}
.btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);filter:brightness(1.06)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-ghost{background:#fff;color:var(--c-ink);border-color:var(--c-line);min-height:48px;padding:0 24px}
.btn-ghost:hover{border-color:var(--c-ink);background:var(--c-surface-2);color:var(--c-ink)}
.btn-light{background:#fff;color:var(--c-ink);min-height:52px;padding:0 28px}
.btn-light:hover{color:var(--c-ink);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);min-height:52px;padding:0 26px}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn-sm{min-height:40px;padding:0 22px;font-size:14px}
.btn-block{width:100%}
.text-link{font-weight:600;font-size:15px;color:var(--c-ink);display:inline-flex;align-items:center;gap:8px}
.text-link i{transition:transform .22s var(--ease)}
.text-link:hover{color:var(--c-teal);text-decoration:underline;text-underline-offset:4px}
.text-link:hover i{transform:translateX(4px)}
.nav-toggle{display:none}

/* 移动端面板 */
.mobile-panel{display:none;background:#fff;border-top:1px solid var(--c-line);border-radius:0 0 24px 24px;padding:12px 0 20px;box-shadow:var(--sh-2)}
.mobile-panel.is-open{display:block}
.mobile-panel a{display:flex;align-items:center;height:48px;padding:0 24px;font-size:16px;font-weight:500;color:var(--c-text)}
.mobile-panel a.is-active{color:var(--c-ink);font-weight:600;background:var(--c-surface-2)}

@media (max-width:1023px){
  .nav-links{display:none}
  .command-search{display:none}
  .icon-btn.search-mobile{display:inline-flex}
  .nav-toggle{display:inline-flex}
  .brand-name{font-size:17px}
  .brand-sub{display:none}
  .logo-mark{width:32px;height:32px;border-radius:10px}
  :root{--sec:64px}
}
@media (min-width:1024px){
  .icon-btn.search-mobile{display:none}
}
@media (max-width:639px){
  :root{--sec:48px}
  .container{padding:0 16px}
  .nav-wrap{height:56px;gap:12px}
  .btn-primary.nav-cta{min-height:40px;padding:0 16px;font-size:14px}
}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--c-bg);padding:72px 0 88px;overflow:hidden}
.hero::before{content:"";position:absolute;top:-160px;right:-140px;width:640px;height:640px;border-radius:50%;background:radial-gradient(circle,rgba(23,163,152,.16) 0%,rgba(23,163,152,.06) 42%,rgba(23,163,152,0) 70%);pointer-events:none}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,rgba(23,163,152,0) 0%,rgba(23,163,152,.5) 50%,rgba(23,163,152,0) 100%)}
.hero-inner{position:relative;z-index:2}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-pill);padding:6px 16px;font-size:13px;font-weight:600;letter-spacing:.04em;color:var(--c-ink);margin-bottom:20px}
.hero-eyebrow i{width:8px;height:8px;border-radius:50%;background:var(--grad-accent);display:block}
.hero h1{max-width:620px}
.hero-sub{margin-top:20px;max-width:560px;font-size:17px;line-height:1.8;color:var(--c-text-2)}
.hero-cta{display:flex;flex-wrap:wrap;gap:16px;margin-top:32px}
.hero-badges{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.stat-badge{display:flex;align-items:center;gap:12px;padding:12px 18px;border-radius:var(--r-m);border:1px solid transparent;background:linear-gradient(#fff,#fff) padding-box,var(--grad-brand) border-box;box-shadow:var(--sh-1)}
.stat-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--grad-accent);flex:0 0 auto}
.stat-badge .num{font-size:28px;font-weight:700;line-height:1;color:var(--c-ink)}
.stat-badge .label{font-size:13px;color:var(--c-text-2);line-height:1.4}
.hero-visual{position:relative;border-radius:var(--r-l);overflow:visible;margin-top:8px}
.hero-visual .frame{border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sh-2);border:1px solid var(--c-line);background:#fff}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .3s var(--ease)}
.hero-visual:hover img{transform:scale(1.04)}
.float-card{position:absolute;right:-24px;bottom:-24px;background:#fff;border-radius:var(--r-m);box-shadow:var(--sh-3);padding:16px 18px;min-width:210px;border:1px solid var(--c-line)}
.float-card .fc-label{font-size:12px;letter-spacing:.04em;font-weight:600;color:var(--c-text-2)}
.float-card .fc-value{font-size:26px;font-weight:700;color:var(--c-ink);line-height:1.2}
.mini-bar{margin-top:10px;height:6px;border-radius:99px;background:var(--c-surface-2);overflow:hidden}
.mini-bar i{display:block;height:100%;width:86%;background:var(--grad-brand);border-radius:99px}
@media (max-width:1023px){
  .float-card{right:12px;bottom:-20px}
}
@media (max-width:639px){
  .hero{padding:48px 0 64px}
  .hero-cta .btn{width:100%}
  .float-card{position:static;margin-top:16px;box-shadow:var(--sh-1)}
}

/* ---------- 痛点 ---------- */
.pain-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-l);padding:26px;box-shadow:var(--sh-1);height:100%;transition:transform .26s var(--ease),box-shadow .26s var(--ease)}
.pain-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.pain-num{font-size:36px;font-weight:700;line-height:1;color:rgba(23,163,152,.2);-webkit-text-stroke:1.5px var(--c-teal);margin-bottom:14px;transition:color .26s var(--ease)}
.pain-card:hover .pain-num{color:var(--c-teal)}
.pain-card h3{font-size:17px;font-weight:600;margin-bottom:8px}
.pain-card p{font-size:14px;color:var(--c-text-2);margin:0}
.grad-line{width:56px;height:3px;border-radius:99px;background:var(--grad-accent);margin-top:18px}

/* ---------- 解决方案 ---------- */
.solution-row{padding:72px 0}
.solution-row + .solution-row{border-top:1px solid var(--c-line)}
.solution-badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.04em;color:var(--c-teal);margin-bottom:14px}
.solution-badge i{width:8px;height:8px;border-radius:50%;background:var(--grad-accent);display:block}
.solution-row h3{font-size:24px;margin-bottom:14px}
.solution-row p{font-size:15px;line-height:1.85;color:var(--c-text-2)}
.solution-list{margin-top:20px}
.solution-list li{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-top:1px solid var(--c-line);font-size:15px}
.solution-list li:last-child{border-bottom:1px solid var(--c-line)}
.solution-list i{color:var(--c-teal);font-size:16px;margin-top:5px}
.solution-img{border-radius:var(--r-l);overflow:hidden;border:1px solid var(--c-line);background:#fff}
.solution-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.solution-img:hover img{transform:scale(1.04)}
@media (max-width:639px){
  .solution-row{padding:40px 0}
  .solution-img{margin-bottom:20px}
}

/* ---------- 数据区 ---------- */
.data-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--r-l);padding:24px;height:100%;transition:background-color .26s var(--ease)}
.data-card:hover{background:rgba(255,255,255,.10)}
.data-icon{width:40px;height:40px;border-radius:50%;border:1px solid transparent;background:linear-gradient(var(--c-teal-deep),var(--c-teal-deep)) padding-box,var(--grad-accent) border-box;display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:16px}
.data-value{font-size:36px;font-weight:700;line-height:1.1;color:#fff;font-variant-numeric:tabular-nums}
.data-label{font-size:14px;color:rgba(255,255,255,.86);margin-top:6px}
.data-note{font-size:13px;color:rgba(255,255,255,.6);margin-top:4px}
.dark-band h2{color:#fff}
.dark-band .section-head p{color:rgba(255,255,255,.72)}

/* ---------- 证言 ---------- */
.testimonial-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-l);padding:28px;box-shadow:var(--sh-2);height:100%;display:flex;flex-direction:column;transition:transform .26s var(--ease)}
.testimonial-card:hover{transform:translateY(-4px)}
.quote-mark{font-size:32px;line-height:1;color:rgba(23,163,152,.14);margin-bottom:10px}
.testimonial-card p{font-size:16px;line-height:1.85;color:var(--c-text);margin:0 0 20px}
.author-row{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:18px;border-top:1px solid transparent;border-image:var(--grad-accent) 1;border-top-width:1px;border-top-style:solid}
.avatar{width:44px;height:44px;border-radius:50%;background:var(--grad-brand);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;flex:0 0 auto}
.author-name{font-size:15px;font-weight:600}
.author-role{font-size:13px;color:var(--c-text-2)}
@media (min-width:1024px){
  .testimonial-columns > .cell:nth-child(2){transform:translateY(-24px)}
}
@media (max-width:1023px){
  .testimonial-columns{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:16px;padding-bottom:8px}
  .testimonial-columns > .cell{flex:0 0 88%;scroll-snap-align:start}
}

/* ---------- 资讯卡 ---------- */
.news-card{display:block;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sh-1);height:100%;position:relative;transition:transform .26s var(--ease),box-shadow .26s var(--ease);color:var(--c-text)}
.news-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad-accent);opacity:0;transition:opacity .26s var(--ease);z-index:3}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);color:var(--c-text)}
.news-card:hover::before{opacity:1}
.news-cover{overflow:hidden;aspect-ratio:16/9;background:var(--c-surface-2)}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-body{padding:20px 22px 22px}
.tag-pill{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.04em;padding:4px 12px;border-radius:var(--r-pill);background:var(--c-surface-2);color:var(--c-ink);margin-bottom:12px}
.news-title{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-summary{font-size:14px;line-height:1.7;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin:0 0 16px}
.news-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-text-2);border-top:1px solid var(--c-line);padding-top:14px}
.news-meta .read{color:var(--c-ink);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.empty-state{min-height:260px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:#fff;border:1px dashed var(--c-line);border-radius:var(--r-l);padding:32px;text-align:center}
.empty-state i{font-size:44px;color:rgba(23,163,152,.4)}
.empty-state p{font-size:14px;color:var(--c-text-2);margin:0}

/* ---------- FAQ ---------- */
.faq-shell{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-l);box-shadow:var(--sh-1);padding:32px}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item:last-child{border-bottom:0}
.faq-q{width:100%;background:transparent;border:0;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px;padding:12px 0;text-align:left;font-size:17px;font-weight:600;color:var(--c-text);cursor:pointer}
.faq-q .plus{width:22px;height:22px;flex:0 0 auto;position:relative;transition:transform .26s var(--ease)}
.faq-q .plus::before,.faq-q .plus::after{content:"";position:absolute;background:var(--c-teal);border-radius:2px}
.faq-q .plus::before{left:0;right:0;top:10px;height:2px}
.faq-q .plus::after{top:0;bottom:0;left:10px;width:2px;transition:transform .26s var(--ease),opacity .26s var(--ease)}
.faq-item.is-open .plus::after{transform:scaleY(0);opacity:0}
.faq-item.is-open .plus{transform:rotate(45deg)}
.faq-q:hover{color:var(--c-ink)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a p{font-size:15px;line-height:1.85;color:var(--c-text-2);padding:0 0 20px;margin:0}

/* ---------- CTA ---------- */
.cta-card{position:relative;overflow:hidden;border-radius:var(--r-xl);background:var(--grad-brand);color:#fff;padding:56px}
.cta-card::before{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;border:1px solid rgba(255,255,255,.10);box-shadow:0 0 0 60px rgba(255,255,255,.05),0 0 0 120px rgba(255,255,255,.03);pointer-events:none}
.cta-card h2{color:#fff}
.cta-card p{color:rgba(255,255,255,.82);max-width:520px;margin-top:14px}
.cta-actions{display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.cta-contact{font-size:14px;color:rgba(255,255,255,.78)}
.cta-contact a{color:#fff;text-decoration:underline;text-underline-offset:4px}
@media (max-width:639px){
  .cta-card{padding:32px 24px}
  .cta-actions .btn{width:100%}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-footer);color:rgba(233,241,239,.78);position:relative;padding:64px 0 28px;margin-top:0}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad-accent)}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-list li{margin-bottom:10px}
.footer-list a{color:rgba(233,241,239,.78);font-size:14px}
.footer-list a:hover{color:var(--c-amber)}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-name{color:#fff}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(233,241,239,.7);max-width:320px}
.social-row{display:flex;gap:10px;margin-top:18px}
.social-row a{width:36px;height:36px;border-radius:50%;border:1px solid rgba(255,255,255,.16);display:flex;align-items:center;justify-content:center;color:rgba(233,241,239,.82);transition:background-color .22s var(--ease),color .22s var(--ease)}
.social-row a:hover{background:rgba(255,255,255,.10);color:var(--c-amber)}
.contact-line{display:flex;align-items:flex-start;gap:10px;font-size:14px;margin-bottom:12px}
.contact-line i{width:16px;margin-top:5px;color:var(--c-teal)}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(233,241,239,.6)}
.footer-bottom a{color:rgba(233,241,239,.6)}
.footer-bottom a:hover{color:var(--c-amber)}
@media (max-width:639px){
  .site-footer{padding:48px 0 24px}
  .footer-desc{max-width:none}
}

/* Foundation 覆盖 */
.grid-margin-x>.cell{margin-bottom:0}
.button{background:var(--grad-brand);border-radius:var(--r-pill)}
.button:hover{background:var(--grad-brand);filter:brightness(1.06)}
input[type="text"],input[type="search"],input[type="email"],textarea{box-shadow:none}
.accordion{background:transparent}
.reveal{border-radius:var(--r-l);border:0}

/* 动效降级 */
@media (prefers-reduced-motion: reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .news-card:hover,.pain-card:hover,.testimonial-card:hover,.btn:hover{transform:none !important}
}

/* roulang page: article */
/* ===================== 设计变量 ===================== */
:root{
  --c-ink:#0E4F4A;
  --c-teal:#17A398;
  --c-teal-mid:#16786F;
  --c-teal-deep:#0A3A36;
  --c-amber:#F2A03D;
  --c-coral:#E8654A;
  --c-bg:#F6F3EE;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFF3F1;
  --c-line:#E3DED4;
  --c-text:#22302F;
  --c-text-2:#5A6B69;
  --grad-brand:linear-gradient(115deg,#0E4F4A 0%,#16786F 55%,#17A398 100%);
  --grad-accent:linear-gradient(90deg,#17A398 0%,#F2A03D 100%);
  --r-s:10px;
  --r-m:16px;
  --r-l:22px;
  --r-xl:30px;
  --r-pill:999px;
  --sh-1:0 4px 14px rgba(14,79,74,.06);
  --sh-2:0 12px 32px rgba(14,79,74,.10);
  --sh-3:0 20px 48px rgba(14,79,74,.16);
  --container:1200px;
}
@media (min-width:1440px){:root{--container:1280px;}}

/* ===================== 基础 reset ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-ink);text-decoration:none;transition:color .22s cubic-bezier(.2,.7,.3,1);}
a:hover{color:var(--c-teal-mid);}
button{font-family:inherit;cursor:pointer;}
input,button,textarea,select{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;color:var(--c-text);line-height:1.3;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;}
figure{margin:0;}
:focus-visible{outline:2px solid var(--c-amber);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;}

/* ===================== 容器与栅格 ===================== */
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px;}
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x>.cell{width:calc(100% - 24px);margin-left:12px;margin-right:12px;}
@media screen and (min-width:40em){
  .grid-margin-x>.cell{width:calc(100% - 24px);}
  .grid-margin-x>.medium-6{width:calc(50% - 24px);}
  .grid-margin-x>.medium-12{width:calc(100% - 24px);}
}
@media screen and (min-width:64em){
  .grid-margin-x>.large-3{width:calc(25% - 24px);}
  .grid-margin-x>.large-4{width:calc(33.33333% - 24px);}
  .grid-margin-x>.large-5{width:calc(41.66667% - 24px);}
  .grid-margin-x>.large-7{width:calc(58.33333% - 24px);}
  .grid-margin-x>.large-8{width:calc(66.66667% - 24px);}
  .grid-margin-x>.large-9{width:calc(75% - 24px);}
  .grid-margin-x>.large-12{width:calc(100% - 24px);}
}
@media screen and (max-width:39.9375em){
  .container{padding-left:16px;padding-right:16px;}
}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;border-radius:var(--r-pill);
  border:1px solid transparent;text-decoration:none;white-space:nowrap;
  padding:0 26px;min-height:48px;
  transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s cubic-bezier(.2,.7,.3,1),background-color .24s,color .24s,border-color .24s,filter .24s;
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 6px 18px rgba(14,79,74,.18);}
.btn-primary:hover,.btn-primary:focus{color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);filter:brightness(1.06);}
.btn-primary:active{transform:translateY(0);filter:brightness(.98);}
.btn-ghost{background:#fff;color:var(--c-ink);border-color:var(--c-line);}
.btn-ghost:hover{color:var(--c-ink);border-color:var(--c-teal);background:var(--c-surface-2);}
.btn-light{background:#fff;color:var(--c-ink);min-height:52px;}
.btn-light:hover{color:var(--c-ink);transform:translateY(-1px);box-shadow:0 14px 30px rgba(0,0,0,.18);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);min-height:52px;}
.btn-outline-light:hover{color:#fff;background:rgba(255,255,255,.14);border-color:#fff;}
.btn-text{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--c-ink);}
.btn-text i{transition:transform .22s cubic-bezier(.2,.7,.3,1);}
.btn-text:hover{color:var(--c-teal-mid);text-decoration:underline;text-underline-offset:4px;}
.btn-text:hover i{transform:translateX(4px);}
.icon-btn{
  width:36px;height:36px;border-radius:50%;border:0;background:transparent;color:var(--c-text-2);
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;
  transition:background-color .22s,color .22s,transform .18s;
}
.icon-btn:hover{background:var(--c-surface-2);color:var(--c-ink);}
.icon-btn:active{transform:scale(.96);}

/* ===================== 导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .3s,background-color .3s;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);background:rgba(255,255,255,.98);}
.header-inner{display:flex;align-items:center;gap:18px;height:64px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:36px;height:36px;border-radius:12px;background:var(--grad-brand);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
  box-shadow:0 4px 12px rgba(14,79,74,.22);
}
.logo-mark span{width:14px;height:14px;border:2px solid #fff;border-radius:4px;display:block;position:relative;}
.logo-mark span::after{content:"";position:absolute;left:3px;top:3px;width:4px;height:4px;background:#fff;border-radius:1px;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:18px;font-weight:700;color:var(--c-text);letter-spacing:-.01em;}
.brand-sub{font-size:11px;color:var(--c-text-2);letter-spacing:.04em;}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:6px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:64px;padding:0 14px;
  font-size:15px;font-weight:500;color:var(--c-text-2);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;border-radius:2px;
  background:var(--grad-accent);transform:scaleX(0);transform-origin:left;
  transition:transform .22s cubic-bezier(.2,.7,.3,1);
}
.nav-link:hover{color:var(--c-ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-ink);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-right{margin-left:auto;display:flex;align-items:center;gap:10px;}
.search-box{
  display:flex;align-items:center;gap:8px;width:300px;height:40px;
  padding:0 12px;border-radius:var(--r-pill);background:var(--c-surface-2);
  border:1px solid transparent;transition:background-color .22s,border-color .22s,box-shadow .22s;
}
.search-box i{color:var(--c-text-2);font-size:14px;}
.search-box input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--c-text);height:38px;
}
.search-box input::placeholder{color:var(--c-text-2);}
.search-box:focus-within{background:#fff;border-color:var(--c-teal);box-shadow:0 0 0 3px rgba(23,163,152,.16);}
.kbd{
  font-size:13px;color:var(--c-text-2);background:#fff;border:1px solid var(--c-line);
  border-radius:6px;padding:1px 6px;line-height:1.5;flex:0 0 auto;
}
.btn-cta{min-height:40px;padding:0 22px;font-size:14px;}
.cta-short{display:none;}
.menu-toggle{display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--c-line);background:#fff;color:var(--c-ink);font-size:16px;}
.mobile-panel{
  background:#fff;border-top:1px solid var(--c-line);
  border-radius:0 0 24px 24px;box-shadow:var(--sh-2);padding:6px 0 16px;
}
.mobile-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;font-size:16px;color:var(--c-text);border-bottom:1px solid var(--c-line);
}
.mobile-nav a:last-child{border-bottom:0;}
.mobile-nav a i{color:var(--c-text-2);font-size:13px;}
.mobile-search{background:#fff;border-top:1px solid var(--c-line);padding:10px 0 14px;}
.search-box-full{width:100%;}

@media (max-width:1023px){
  .nav-links,.search-box{display:none;}
  .menu-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .header-inner{height:56px;gap:10px;}
  .logo-mark{width:32px;height:32px;border-radius:10px;}
  .brand-name{font-size:16px;}
  .brand-sub{display:none;}
  .cta-full{display:none;}
  .cta-short{display:inline;}
  .btn-cta{min-height:38px;padding:0 16px;}
  .icon-btn{display:none;}
}
@media (max-width:520px){
  .header-right{gap:8px;}
  .btn-cta{padding:0 14px;font-size:13px;}
}

/* ===================== 面包屑 ===================== */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--c-text-2);padding:22px 0 4px;
}
.breadcrumb a{color:var(--c-text-2);}
.breadcrumb a:hover{color:var(--c-ink);}
.breadcrumb .sep{width:4px;height:4px;border-radius:50%;background:var(--grad-accent);display:inline-block;}
.breadcrumb .current{color:var(--c-text-2);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ===================== 文章头 ===================== */
.article-hero{padding-bottom:8px;}
.article-head{padding:14px 0 0;}
.cat-pill{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  color:var(--c-ink);background:rgba(23,163,152,.12);
  border-radius:var(--r-pill);padding:6px 14px;
}
.cat-pill::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-coral);}
.article-title{
  font-size:clamp(26px,3vw,40px);line-height:1.35;font-weight:700;
  max-width:820px;margin:18px 0 0;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:13px;color:var(--c-text-2);margin-top:16px;
}
.article-meta .num{color:var(--c-text);font-weight:600;}
.article-meta .dot{width:1px;height:12px;background:var(--c-line);display:inline-block;}
.grad-line{height:2px;border-radius:2px;background:var(--grad-accent);margin-top:20px;width:100%;max-width:820px;}
.article-cover{margin-top:28px;}
.cover-frame{border-radius:var(--r-l);overflow:hidden;background:var(--c-surface-2);}
.cover-frame img{width:100%;aspect-ratio:21/9;object-fit:cover;transition:transform .4s cubic-bezier(.2,.7,.3,1);}
.article-cover:hover .cover-frame img{transform:scale(1.02);}
.article-cover figcaption{font-size:13px;color:var(--c-text-2);margin-top:10px;}

/* ===================== 主体两栏 ===================== */
.article-main{padding:56px 0 24px;}
.article-body{
  max-width:760px;font-size:17px;line-height:1.9;color:var(--c-text);
  word-break:break-word;overflow-wrap:break-word;
}
.article-body p{margin:0 0 20px;}
.article-body h2{
  position:relative;font-size:24px;font-weight:700;line-height:1.45;
  margin:48px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;
  background:var(--grad-accent);
}
.article-body h3{font-size:19px;font-weight:600;margin:32px 0 12px;}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 10px;}
.article-body ul,.article-body ol{padding-left:22px;margin:0 0 20px;}
.article-body li{margin-bottom:8px;line-height:1.9;}
.article-body ul li::marker{color:var(--c-teal);}
.article-body ol li::marker{color:var(--c-teal);font-weight:600;}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;
  background:var(--c-surface-2);border-left:4px solid var(--c-teal);
  border-radius:0 16px 16px 0;color:var(--c-text-2);font-size:16px;
}
.article-body img{border-radius:16px;margin:24px auto;height:auto;}
.article-body a{color:var(--c-ink);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;}
.article-body a:hover{color:var(--c-amber);}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:24px 0;border:1px solid var(--c-line);border-radius:12px;overflow:hidden;}
.article-body th,.article-body td{padding:10px 14px;border:1px solid var(--c-line);text-align:left;}
.article-body thead th{background:rgba(23,163,152,.08);font-weight:600;}
.article-body tbody tr:nth-child(even){background:var(--c-surface-2);}
.article-body pre{
  background:var(--c-teal-deep);color:#DCEAE7;border-radius:12px;
  padding:16px 20px;overflow-x:auto;font-size:14px;line-height:1.7;margin:24px 0;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;}
.article-body p code,.article-body li code{background:var(--c-surface-2);border-radius:6px;padding:1px 6px;color:var(--c-ink);}
@media (max-width:39.9375em){
  .article-main{padding:40px 0 16px;}
  .article-body{font-size:16px;line-height:1.88;}
  .article-body h2{font-size:21px;margin-top:36px;}
  .article-body h3{font-size:18px;}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
  .cover-frame img{aspect-ratio:16/9;}
}

/* ===================== 空态 ===================== */
.empty-state{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-l);
  box-shadow:var(--sh-1);padding:40px 24px;text-align:center;
}
.empty-state i{font-size:44px;color:rgba(23,163,152,.4);}
.empty-state p{font-size:15px;color:var(--c-text-2);}

/* ===================== 文末区 ===================== */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:40px 0 0;}
.tag{
  display:inline-flex;align-items:center;font-size:12px;font-weight:600;letter-spacing:.04em;
  color:var(--c-ink);background:var(--c-surface-2);border-radius:var(--r-pill);padding:6px 14px;
  transition:background-color .22s,color .22s;
}
.tag:hover{background:rgba(23,163,152,.14);color:var(--c-ink);}
.prevnext{
  display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:36px;
}
.pn-card{
  display:flex;flex-direction:column;gap:8px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-l);padding:20px 22px;box-shadow:var(--sh-1);
  transition:transform .26s cubic-bezier(.2,.7,.3,1),box-shadow .26s,border-color .26s;
}
.pn-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(23,163,152,.4);}
.pn-label{font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--c-text-2);}
.pn-title{font-size:16px;font-weight:600;color:var(--c-text);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.pn-card i{color:var(--c-teal);font-size:14px;}
.pn-card.next{align-items:flex-end;text-align:right;}
.share-row{display:flex;align-items:center;gap:14px;margin-top:32px;flex-wrap:wrap;}
.share-row span{font-size:13px;color:var(--c-text-2);}
.share-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--c-line);background:#fff;
  color:var(--c-text-2);display:inline-flex;align-items:center;justify-content:center;
  transition:background-color .22s,color .22s,transform .22s,border-color .22s;
}
.share-btn:hover{background:var(--c-surface-2);color:var(--c-ink);border-color:var(--c-teal);transform:translateY(-2px);}
.back-row{margin-top:32px;}

/* ===================== 通用卡片 ===================== */
.card{
  position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-l);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .26s cubic-bezier(.2,.7,.3,1),box-shadow .26s,border-color .26s;
}
.card::after{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--grad-accent);
  opacity:0;transition:opacity .26s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(23,163,152,.35);}
.card:hover::after{opacity:1;}
.card-cover{overflow:hidden;border-radius:16px;background:var(--c-surface-2);}
.card-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s cubic-bezier(.2,.7,.3,1);}
.card:hover .card-cover img{transform:scale(1.04);}
.card-body{padding:20px 22px 24px;}
.card-cat{
  display:inline-flex;font-size:12px;font-weight:600;letter-spacing:.04em;
  color:var(--c-ink);background:var(--c-surface-2);border-radius:var(--r-pill);padding:4px 12px;
}
.card-title{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:17px;font-weight:600;line-height:1.6;color:var(--c-text);margin:12px 0 8px;
}
.card-excerpt{
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
  font-size:14px;color:var(--c-text-2);line-height:1.75;
}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  margin-top:16px;padding-top:14px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-text-2);
}
.card-foot .more{color:var(--c-ink);font-weight:600;}

/* ===================== 相关推荐 ===================== */
.related-section{padding:72px 0 8px;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;}
.section-head h2{font-size:clamp(22px,2.4vw,30px);}
.section-head .sub{font-size:14px;color:var(--c-text-2);margin-top:8px;max-width:620px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
@media (max-width:1023px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:639px){.related-grid{grid-template-columns:1fr;}}

/* ===================== 侧栏 ===================== */
.sidebar-sticky{display:flex;flex-direction:column;gap:22px;}
@media (min-width:1024px){
  .sidebar-sticky{position:sticky;top:88px;}
  .article-sidebar{margin-top:4px;}
}
.side-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-l);
  box-shadow:var(--sh-1);padding:22px;
}
.side-card h3{font-size:16px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:4px;height:16px;border-radius:4px;background:var(--grad-accent);}
.side-list{list-style:none;}
.side-list li{border-bottom:1px solid var(--c-line);padding:12px 0;}
.side-list li:last-child{border-bottom:0;padding-bottom:0;}
.side-list li:first-child{padding-top:0;}
.side-list a{font-size:14px;color:var(--c-text);line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.side-list a:hover{color:var(--c-teal-mid);}
.side-list .side-time{font-size:12px;color:var(--c-text-2);margin-top:4px;display:block;}
.pill-list{display:flex;flex-wrap:wrap;gap:10px;}
.pill-list a{
  display:inline-flex;align-items:center;font-size:13px;font-weight:600;
  color:var(--c-ink);background:var(--c-surface-2);border-radius:var(--r-pill);
  padding:7px 14px;transition:background-color .22s;
}
.pill-list a:hover{background:rgba(23,163,152,.16);color:var(--c-ink);}
.side-cta{
  background:linear-gradient(180deg,#fff 0%,#F3F8F6 100%);
  border:1px solid transparent;
  background-clip:padding-box;
  position:relative;
  border-radius:var(--r-l);padding:22px;box-shadow:var(--sh-1);
}
.side-cta::before{
  content:"";position:absolute;inset:0;border-radius:var(--r-l);padding:1px;
  background:var(--grad-accent);
  -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;
}
.side-cta p{font-size:14px;color:var(--c-text-2);margin:8px 0 16px;line-height:1.75;}
.side-cta .btn{min-height:42px;padding:0 20px;font-size:14px;}

/* ===================== FAQ ===================== */
.faq-section{padding:72px 0 0;}
.faq-shell{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-l);
  box-shadow:var(--sh-1);padding:32px;
}
.faq-list{margin-top:0;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:0;}
.faq-q-wrap{margin:0;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:12px 0;background:transparent;border:0;text-align:left;
  font-size:17px;font-weight:600;color:var(--c-text);
  transition:color .22s;
}
.faq-q:hover{color:var(--c-teal-mid);}
.faq-q i{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(23,163,152,.12);color:var(--c-ink);font-size:12px;
  transition:transform .28s cubic-bezier(.2,.7,.3,1),background-color .22s;
}
.faq-q[aria-expanded="true"] i{transform:rotate(45deg);background:rgba(242,160,61,.2);}
.faq-a{padding:0 0 20px;font-size:15px;line-height:1.85;color:var(--c-text-2);max-width:760px;}

/* ===================== CTA 大卡 ===================== */
.cta-band{padding:80px 0 88px;}
.cta-card{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:var(--grad-brand);color:#fff;padding:52px 48px;
  box-shadow:var(--sh-3);
}
.cta-card::before{
  content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.16) 0%,rgba(255,255,255,0) 70%);
}
.cta-card::after{
  content:"";position:absolute;left:-60px;bottom:-120px;width:280px;height:280px;border-radius:50%;
  border:1px solid rgba(255,255,255,.14);
}
.cta-card h2{color:#fff;font-size:clamp(22px,2.6vw,32px);line-height:1.35;position:relative;z-index:1;}
.cta-card .cta-sub{color:rgba(255,255,255,.86);font-size:15px;margin-top:14px;max-width:520px;position:relative;z-index:1;}
.cta-actions{display:flex;flex-direction:column;gap:14px;position:relative;z-index:1;}
.cta-contact{font-size:13px;color:rgba(255,255,255,.78);}
@media (max-width:1023px){
  .cta-card{padding:38px 26px;}
  .cta-actions{margin-top:24px;}
}
@media (max-width:639px){
  .cta-actions .btn{width:100%;}
}

/* ===================== 页脚 ===================== */
.site-footer{
  position:relative;background:var(--c-teal-deep);color:rgba(233,241,239,.78);
  padding:64px 0 26px;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--grad-accent);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-name{color:#fff;font-size:18px;font-weight:700;}
.footer-brand .logo-mark{width:34px;height:34px;border-radius:11px;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(233,241,239,.72);margin:0 0 18px;max-width:380px;}
.social-row{display:flex;gap:10px;}
.social-row a{
  width:36px;height:36px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.08);color:rgba(233,241,239,.85);font-size:14px;
  transition:background-color .22s,color .22s,transform .22s;
}
.social-row a:hover{background:rgba(255,255,255,.18);color:var(--c-amber);transform:translateY(-2px);}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-list{list-style:none;}
.footer-list li{margin-bottom:11px;}
.footer-list a{font-size:14px;color:rgba(233,241,239,.78);}
.footer-list a:hover{color:var(--c-amber);}
.contact-line{display:flex;gap:10px;align-items:flex-start;font-size:14px;margin-bottom:12px;color:rgba(233,241,239,.78);}
.contact-line i{color:var(--c-teal);margin-top:5px;font-size:13px;}
.contact-line .num{letter-spacing:.02em;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  border-top:1px solid rgba(255,255,255,.12);margin-top:44px;padding-top:20px;
  font-size:13px;color:rgba(233,241,239,.62);
}
.footer-bottom a{color:rgba(233,241,239,.78);}
.footer-bottom a:hover{color:var(--c-amber);}
@media (max-width:1023px){
  .site-footer{padding-top:48px;}
  .footer-desc{max-width:100%;}
}

/* ===================== 入场动效 ===================== */
.reveal-up{opacity:0;transform:translateY(16px);transition:opacity .32s ease,transform .32s cubic-bezier(.2,.7,.3,1);}
.reveal-up.is-in{opacity:1;transform:none;}
@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-up{opacity:1!important;transform:none!important;}
}

/* ===================== Foundation 覆盖 ===================== */
a{color:var(--c-ink);}
a:hover{color:var(--c-teal-mid);}
button,.button{background:transparent;}
.button{background:var(--grad-brand);color:#fff;border-radius:var(--r-pill);}
.button:hover{background:var(--grad-brand);color:#fff;filter:brightness(1.06);}
input[type="search"],input[type="text"],input[type="email"]{
  background:transparent;border:0;box-shadow:none;margin:0;height:auto;
}
input[type="search"]:focus,input[type="text"]:focus,input[type="email"]:focus{
  background:transparent;box-shadow:none;border:0;
}
.grid-x{align-items:flex-start;}
.grid-margin-y{margin-top:-12px;margin-bottom:-12px;}
.grid-margin-y>.cell{margin-top:12px;margin-bottom:12px;}

/* roulang page: category1 */
:root{
  --c-ink:#0E4F4A;
  --c-teal:#17A398;
  --c-teal-deep:#0A3A36;
  --c-amber:#F2A03D;
  --c-coral:#E8654A;
  --c-bg:#F6F3EE;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFF3F1;
  --c-line:#E3DED4;
  --c-text:#22302F;
  --c-text-2:#5A6B69;
  --c-footer:#12302D;
  --grad-brand:linear-gradient(115deg,#0E4F4A 0%,#16786F 55%,#17A398 100%);
  --grad-accent:linear-gradient(90deg,#17A398 0%,#F2A03D 100%);
  --r-s:10px;
  --r-m:16px;
  --r-l:22px;
  --r-xl:30px;
  --r-pill:999px;
  --sh-1:0 4px 14px rgba(14,79,74,.06);
  --sh-2:0 12px 32px rgba(14,79,74,.10);
  --sh-3:0 20px 48px rgba(14,79,74,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- base 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","Noto Sans CJK SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-ink);text-decoration:none;transition:color .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease)}
a:hover{color:var(--c-teal)}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit}
h1,h2,h3,h4,h5,h6{margin:0 0 12px;color:var(--c-text);font-weight:700;line-height:1.35}
p{margin:0 0 16px}
ul,ol{margin:0 0 16px;padding-left:20px}
:focus{outline:none}
:focus-visible{outline:2px solid var(--c-amber);outline-offset:2px;border-radius:6px}
.num,.stat-badge .num,.step-num,.footer-bottom,.meta-num{font-variant-numeric:tabular-nums}

/* ---------- Foundation override ---------- */
body,h1,h2,h3,h4,h5,h6,p,li,a,span,div,td,th{font-family:inherit}
.grid-x{margin-left:-12px;margin-right:-12px}
.grid-x>.cell{padding-left:12px;padding-right:12px}
.grid-margin-y{margin-top:-12px}
.grid-margin-y>.cell{margin-top:12px}
.button,.button.primary{background:var(--grad-brand);color:#fff;border-radius:var(--r-pill)}
.accordion-title,.accordion-content{border:0;background:transparent}

/* ---------- layout ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}
.section{padding:96px 0}
.section-alt{background:var(--c-surface-2);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,2.8vw,36px);line-height:1.3;margin-bottom:12px}
.section-head p{color:var(--c-text-2);font-size:15.5px;margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.04em;color:var(--c-ink);
  background:rgba(23,163,152,.10);border:1px solid rgba(23,163,152,.22);
  padding:6px 14px;border-radius:var(--r-pill);margin-bottom:16px;
}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--grad-accent)}
.lead{font-size:17px;color:var(--c-text-2);max-width:820px}
.grad-line{height:2px;width:96px;background:var(--grad-brand);border-radius:2px;margin:20px 0 0}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),background-color .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);filter:brightness(1.06)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-ghost{background:#fff;color:var(--c-ink);border-color:var(--c-line)}
.btn-ghost:hover{border-color:var(--c-ink);background:var(--c-surface-2);color:var(--c-ink)}
.btn-light{background:#fff;color:var(--c-ink)}
.btn-light:hover{color:var(--c-ink);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn-outline-light:hover{color:#fff;border-color:#fff;background:rgba(255,255,255,.12)}
.btn-sm{height:40px;padding:0 22px;font-size:14px}
.text-link{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:var(--c-ink)}
.text-link i{transition:transform .24s var(--ease)}
.text-link:hover i{transform:translateX(4px)}
.text-link:hover{color:var(--c-teal);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s var(--ease),background-color .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);background:rgba(255,255,255,.98)}
.nav-wrap{max-width:1200px;margin:0 auto;padding:0 24px;height:64px;display:flex;align-items:center;gap:24px}
@media (min-width:1440px){.nav-wrap{max-width:1280px}}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:36px;height:36px;border-radius:12px;background:var(--grad-brand);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.logo-mark span{width:14px;height:14px;border:2.5px solid #fff;border-radius:4px;display:block;position:relative}
.logo-mark span::after{content:"";position:absolute;left:50%;top:50%;width:5px;height:5px;background:#fff;border-radius:50%;transform:translate(-50%,-50%)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--c-text)}
.brand-sub{font-size:11px;color:var(--c-text-2);letter-spacing:.02em}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--c-text-2);
  padding:8px 0;transition:color .22s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--grad-brand);border-radius:2px;transition:width .22s var(--ease);
}
.nav-link:hover{color:var(--c-ink)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--c-ink);font-weight:600}
.nav-link.is-active::after{width:100%}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:12px}
.command-search{
  display:flex;align-items:center;gap:10px;
  width:300px;height:40px;padding:0 10px 0 14px;
  background:var(--c-surface-2);border:1px solid transparent;border-radius:var(--r-pill);
  transition:border-color .22s var(--ease),background-color .22s var(--ease),box-shadow .22s var(--ease);
}
.command-search i{font-size:15px;color:var(--c-text-2)}
.command-search input{
  flex:1 1 auto;min-width:0;border:0;background:transparent;
  font-size:14px;color:var(--c-text);height:34px;
}
.command-search input::placeholder{color:var(--c-text-2)}
.command-search input:focus{outline:none}
.command-search:focus-within{border-color:var(--c-ink);background:#fff;box-shadow:0 0 0 2px rgba(14,79,74,.12)}
.kbd{
  flex:0 0 auto;font-size:13px;color:var(--c-text-2);
  background:#fff;border:1px solid var(--c-line);border-radius:6px;
  padding:1px 7px;line-height:1.5;
}
.icon-btn{
  width:34px;height:34px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  color:var(--c-text-2);background:transparent;border:0;font-size:15px;
}
.icon-btn:hover{background:var(--c-surface-2);color:var(--c-ink)}
.icon-btn:active{transform:scale(.96)}
.nav-cta{white-space:nowrap}
.menu-toggle{
  display:none;width:44px;height:44px;border:0;background:transparent;border-radius:12px;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease)}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-panel{
  display:none;background:#fff;border-top:1px solid var(--c-line);
  border-radius:0 0 24px 24px;box-shadow:var(--sh-2);overflow:hidden;
}
.mobile-panel.is-open{display:block}
.mobile-panel .mp-inner{padding:12px 24px 20px}
.mobile-panel a.mp-link{
  display:flex;align-items:center;justify-content:space-between;
  height:48px;font-size:15.5px;font-weight:500;color:var(--c-text);
  border-bottom:1px solid var(--c-line);
}
.mobile-panel a.mp-link:last-of-type{border-bottom:0}
.mobile-panel a.mp-link.is-active{color:var(--c-ink);font-weight:600}
.mobile-panel .mp-search{display:flex;align-items:center;gap:10px;background:var(--c-surface-2);border-radius:var(--r-pill);height:44px;padding:0 16px;margin:8px 0 4px}
.mobile-panel .mp-search input{border:0;background:transparent;flex:1;font-size:14.5px;height:36px}
.mobile-panel .mp-search input:focus{outline:none}
.mobile-panel .mp-cta{margin-top:14px;display:flex;gap:10px}
.mobile-panel .mp-cta .btn{flex:1 1 0;height:48px}

@media (max-width:1023px){
  .nav-wrap{height:56px;gap:12px}
  .nav-links{display:none}
  .command-search{display:none}
  .icon-btn{display:none}
  .menu-toggle{display:flex}
  .nav-cta{height:38px;padding:0 18px;font-size:13.5px}
  .logo-mark{width:32px;height:32px;border-radius:11px}
  .brand-name{font-size:16.5px}
  .brand-sub{display:none}
}

/* ---------- page hero (short) ---------- */
.page-hero{
  position:relative;overflow:hidden;
  min-height:280px;display:flex;align-items:center;
  padding:56px 0;
  background:var(--c-bg);
  border-bottom:1px solid var(--c-line);
}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center right;
  opacity:.30;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(246,243,238,.96) 0%,rgba(246,243,238,.86) 46%,rgba(14,79,74,.22) 100%);
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-text-2);margin-bottom:16px;flex-wrap:wrap}
.breadcrumb a{color:var(--c-text-2)}
.breadcrumb a:hover{color:var(--c-teal)}
.breadcrumb .sep{color:var(--c-line)}
.breadcrumb .current{color:var(--c-text-2)}
.page-hero-title{
  font-size:clamp(28px,3.6vw,44px);line-height:1.22;letter-spacing:-.01em;
  max-width:900px;margin-bottom:16px;
}
.page-hero-lead{font-size:17px;color:var(--c-text-2);max-width:660px;margin-bottom:26px}
.badge-row{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- stat badge ---------- */
.stat-badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 18px;border-radius:var(--r-m);
  background:rgba(255,255,255,.92);
  border:1px solid transparent;
  background-image:linear-gradient(rgba(255,255,255,.94),rgba(255,255,255,.94)),var(--grad-accent);
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:var(--sh-1);
}
.stat-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--grad-accent);flex:0 0 auto}
.stat-badge .num{font-size:26px;font-weight:700;color:var(--c-ink);line-height:1.1;font-variant-numeric:tabular-nums}
.stat-badge .label{font-size:13px;font-weight:600;color:var(--c-ink);letter-spacing:.02em}
.stat-badge .meta{font-size:12.5px;color:var(--c-text-2)}

/* ---------- cards ---------- */
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);
  padding:26px;box-shadow:var(--sh-1);position:relative;overflow:hidden;
}
.side-card::before{content:"";position:absolute;left:0;top:0;right:0;height:2px;background:var(--grad-brand)}
.side-card h3{font-size:18px;margin-bottom:6px}
.side-card .sc-sub{font-size:13.5px;color:var(--c-text-2);margin-bottom:16px}
.check-list{list-style:none;margin:0;padding:0}
.check-list li{
  position:relative;padding:12px 0 12px 26px;font-size:14.5px;color:var(--c-text-2);
  border-bottom:1px solid var(--c-line);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0}
.check-list li::before{
  content:"";position:absolute;left:0;top:20px;width:14px;height:14px;border-radius:4px;
  background:var(--grad-brand);opacity:.9;
}
.check-list li::after{
  content:"";position:absolute;left:4px;top:24px;width:5px;height:8px;
  border-right:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(40deg);
}
.check-list strong{color:var(--c-text);font-weight:600}

.topic-card{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-l);padding:26px;height:100%;box-shadow:var(--sh-1);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.topic-card::before{
  content:"";position:absolute;left:22px;right:22px;top:0;height:2px;border-radius:2px;
  background:var(--grad-brand);opacity:0;transition:opacity .26s var(--ease);
}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(23,163,152,.34)}
.topic-card:hover::before{opacity:1}
.topic-head{display:flex;gap:18px;align-items:flex-start;margin-bottom:16px}
.topic-icon{
  width:64px;height:64px;flex:0 0 auto;border-radius:var(--r-m);
  background:linear-gradient(135deg,rgba(14,79,74,.10),rgba(23,163,152,.18));
  border:1px solid rgba(23,163,152,.24);
  display:flex;align-items:center;justify-content:center;
  color:var(--c-ink);font-size:24px;
}
.topic-card h3{font-size:20px;margin-bottom:8px}
.topic-card p{font-size:14.8px;color:var(--c-text-2);margin-bottom:14px}
.mini-list{list-style:none;margin:0;padding:0}
.mini-list li{
  position:relative;font-size:14px;color:var(--c-text-2);
  padding:9px 0 9px 20px;border-top:1px solid var(--c-line);
}
.mini-list li::before{
  content:"";position:absolute;left:2px;top:17px;width:7px;height:7px;border-radius:50%;
  background:var(--grad-accent);
}
.topic-card-wide .body-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:6px}
.topic-card-wide .body-grid .cell-box{
  background:var(--c-surface-2);border:1px solid var(--c-line);border-radius:var(--r-m);padding:16px 18px;
}
.topic-card-wide .body-grid h4{font-size:15px;margin-bottom:6px}
.topic-card-wide .body-grid p{font-size:13.8px;margin:0;color:var(--c-text-2)}

/* ---------- steps ---------- */
.step-row{
  list-style:none;margin:0;padding:0;
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
}
.step{position:relative;padding:0 20px 0 0}
.step-top{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.step-num{
  width:44px;height:44px;border-radius:50%;flex:0 0 auto;
  background:var(--grad-brand);color:#fff;font-weight:700;font-size:16px;
  display:flex;align-items:center;justify-content:center;
}
.step-line{flex:1 1 auto;height:2px;background:linear-gradient(90deg,rgba(23,163,152,.45),rgba(23,163,152,.12));border-radius:2px}
.step:last-child .step-line{display:none}
.step h3{font-size:17px;margin-bottom:6px}
.step p{font-size:14.2px;color:var(--c-text-2);margin:0}

/* ---------- table ---------- */
.table-scroll{
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  border:1px solid var(--c-line);border-radius:var(--r-l);background:#fff;box-shadow:var(--sh-1);
}
.data-table{width:100%;border-collapse:collapse;font-size:14.5px;min-width:680px}
.data-table thead th{
  background:rgba(14,79,74,.07);color:var(--c-ink);font-weight:600;text-align:left;
  padding:16px 18px;border-bottom:1px solid var(--c-line);white-space:nowrap;
}
.data-table tbody td{padding:16px 18px;border-bottom:1px solid var(--c-line);color:var(--c-text-2)}
.data-table tbody tr:last-child td{border-bottom:0}
.data-table tbody tr:nth-child(even){background:var(--c-surface-2)}
.data-table td strong{color:var(--c-text);font-weight:600}
.status-dot{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--c-ink)}
.status-dot::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--c-coral);flex:0 0 auto}
.status-dot.is-ok::before{background:var(--c-teal)}

/* ---------- notice box ---------- */
.notice{
  background:rgba(23,163,152,.08);border-left:3px solid var(--c-teal);
  border-radius:12px;padding:16px 20px;margin:0 0 16px;
}
.notice p{margin:0;font-size:14.5px;color:var(--c-text-2)}
.notice strong{color:var(--c-ink)}

/* ---------- compare cards ---------- */
.compare-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:26px}
.compare-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-l);
  padding:24px;box-shadow:var(--sh-1);
}
.compare-card h3{font-size:18px;display:flex;align-items:center;gap:10px;margin-bottom:12px}
.compare-card h3 i{font-size:16px;color:var(--c-teal)}
.compare-card ul{list-style:none;margin:0;padding:0}
.compare-card li{font-size:14.3px;color:var(--c-text-2);padding:8px 0 8px 18px;position:relative;border-bottom:1px dashed var(--c-line)}
.compare-card li:last-child{border-bottom:0}
.compare-card li::before{content:"";position:absolute;left:0;top:16px;width:6px;height:6px;border-radius:50%;background:var(--c-teal)}

/* ---------- faq ---------- */
.faq-panel{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-l);
  box-shadow:var(--sh-1);padding:32px;
}
.faq-panel .side-title h2{font-size:clamp(22px,2.4vw,30px)}
.faq-panel .side-title p{font-size:14.5px;color:var(--c-text-2)}
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{
  width:100%;background:transparent;border:0;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 0;font-size:17px;font-weight:600;color:var(--c-text);
  transition:color .22s var(--ease);
}
.faq-q:hover{color:var(--c-ink)}
.faq-icon{
  position:relative;flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:rgba(23,163,152,.12);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-ink);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .26s var(--ease),opacity .26s var(--ease);
}
.faq-icon::before{width:12px;height:2px}
.faq-icon::after{width:2px;height:12px}
.faq-q[aria-expanded="true"] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-q[aria-expanded="true"] .faq-icon::before{transform:translate(-50%,-50%) rotate(180deg)}
.faq-a{padding:0 0 18px;font-size:15px;color:var(--c-text-2);line-height:1.85}
.faq-a[hidden]{display:none}
.faq-a p{margin:0 0 10px}
.faq-a p:last-child{margin-bottom:0}

/* ---------- article-like cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-l);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease);
  display:flex;flex-direction:column;
}
.news-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--grad-brand);
  opacity:0;transition:opacity .26s var(--ease);z-index:3;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.news-card:hover::before{opacity:1}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--c-surface-2)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.tag{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.04em;
  color:var(--c-ink);background:var(--c-surface-2);border-radius:var(--r-pill);
  padding:4px 12px;margin-bottom:12px;align-self:flex-start;
}
.news-body h3{font-size:17px;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:14px;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px}
.news-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  border-top:1px solid var(--c-line);padding-top:14px;font-size:13px;color:var(--c-text-2);
}
.news-meta .more{font-weight:600;color:var(--c-ink)}
.news-meta .more:hover{color:var(--c-teal)}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--grad-brand);
  border-radius:var(--r-xl);
  padding:52px 48px;
  color:#fff;
}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:340px;height:340px;border-radius:50%;
  border:1px solid rgba(255,255,255,.16);
  box-shadow:0 0 0 40px rgba(255,255,255,.05),0 0 0 80px rgba(255,255,255,.03);
  pointer-events:none;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,32px);margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.86);font-size:15.5px;margin-bottom:0;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.cta-note{font-size:13.5px;color:rgba(255,255,255,.8)}

/* ---------- footer ---------- */
.site-footer{
  position:relative;background:var(--c-footer);color:rgba(233,241,239,.78);
  padding:64px 0 24px;margin-top:96px;
}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--grad-brand)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-name{color:#fff;font-size:17px}
.footer-desc{font-size:14px;color:rgba(233,241,239,.7);max-width:330px;line-height:1.8}
.social-row{display:flex;gap:10px;margin-top:18px}
.social-row a{
  width:36px;height:36px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.08);color:rgba(233,241,239,.85);font-size:14px;
}
.social-row a:hover{background:rgba(255,255,255,.16);color:var(--c-amber)}
.footer-title{font-size:14px;font-weight:600;color:#fff;letter-spacing:.04em;margin-bottom:16px}
.footer-list{list-style:none;margin:0;padding:0}
.footer-list li{margin-bottom:10px}
.footer-list a{font-size:14px;color:rgba(233,241,239,.78)}
.footer-list a:hover{color:var(--c-amber)}
.contact-line{display:flex;align-items:flex-start;gap:10px;font-size:14px;margin-bottom:10px;color:rgba(233,241,239,.78)}
.contact-line i{color:var(--c-teal);font-size:14px;margin-top:4px}
.contact-line .num{font-variant-numeric:tabular-nums}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(233,241,239,.6);
}
.footer-bottom a{color:rgba(233,241,239,.7)}
.footer-bottom a:hover{color:var(--c-amber)}

/* ---------- motion ---------- */
.reveal-item{opacity:0;transform:translateY(16px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal-item.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal-item{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  *{transition:none !important;animation:none !important}
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .command-search{width:240px}
  .nav-links{gap:20px}
}
@media (max-width:1023px){
  .section{padding:64px 0}
  .page-hero{padding:44px 0;min-height:220px}
  .cta-band{padding:40px 32px}
  .faq-panel{padding:24px}
  .step-row{grid-template-columns:repeat(2,1fr);gap:26px 20px}
  .step:nth-child(2) .step-line{display:none}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .topic-card-wide .body-grid{grid-template-columns:1fr}
  .site-footer{margin-top:64px;padding-top:48px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .grid-x{margin-left:-8px;margin-right:-8px}
  .grid-x>.cell{padding-left:8px;padding-right:8px}
  .grid-margin-y{margin-top:-8px}
  .grid-margin-y>.cell{margin-top:8px}
  .section{padding:48px 0}
  .page-hero-title{font-size:clamp(24px,7vw,30px)}
  .page-hero-lead{font-size:15.5px}
  .badge-row{gap:10px}
  .stat-badge{padding:10px 14px;gap:8px}
  .stat-badge .num{font-size:22px}
  .stat-badge .meta{display:none}
  .compare-grid{grid-template-columns:1fr}
  .step-row{grid-template-columns:1fr;gap:22px}
  .step{padding-right:0}
  .step-line{display:none}
  .card-grid{grid-template-columns:1fr}
  .btn{width:100%;min-width:160px}
  .cta-actions .btn{width:100%}
  .cta-band{padding:32px 20px;border-radius:24px}
  .faq-panel{padding:20px}
  .faq-q{font-size:16px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:519px){
  .page-hero::after{background:linear-gradient(180deg,rgba(246,243,238,.94) 0%,rgba(246,243,238,.9) 100%)}
  .section-head h2{font-size:22px}
  .topic-head{gap:14px}
  .topic-icon{width:52px;height:52px;font-size:20px}
}

/* roulang page: category2 */
:root{
  --c-ink:#0E4F4A;
  --c-teal:#17A398;
  --c-teal-deep:#0A3A36;
  --c-amber:#F2A03D;
  --c-coral:#E8654A;
  --c-bg:#F6F3EE;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFF3F1;
  --c-line:#E3DED4;
  --c-text:#22302F;
  --c-text-2:#5A6B69;
  --grad-brand:linear-gradient(115deg,#0E4F4A 0%,#16786F 55%,#17A398 100%);
  --grad-accent:linear-gradient(90deg,#17A398 0%,#F2A03D 100%);
  --r-s:10px;--r-m:16px;--r-l:22px;--r-xl:32px;--r-pill:999px;
  --sh-1:0 4px 14px rgba(14,79,74,.06);
  --sh-2:0 12px 32px rgba(14,79,74,.10);
  --sh-3:0 20px 48px rgba(14,79,74,.16);
  --font-cn:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --sp-sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--c-bg);color:var(--c-text);font-family:var(--font-cn);font-size:16px;line-height:1.85;font-weight:400;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--c-ink);text-decoration:none;transition:color .22s cubic-bezier(.2,.7,.3,1)}
a:hover{color:var(--c-teal)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 18px}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--c-ink);letter-spacing:-.01em}
button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit}
input{font-family:inherit}
:focus-visible{outline:2px solid var(--c-amber);outline-offset:2px;border-radius:8px}
.foundation-blue-reset,.button{background-image:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media screen and (min-width:1440px){.container{max-width:1280px}}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.88);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--c-line);transition:box-shadow .26s ease,background-color .26s ease}
.site-header.is-scrolled{box-shadow:var(--sh-1);background:rgba(255,255,255,.98)}
.header-bar{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{width:36px;height:36px;border-radius:12px;background:var(--grad-brand);display:flex;align-items:center;justify-content:center;flex:0 0 auto;box-shadow:0 6px 16px rgba(14,79,74,.22)}
.logo-mark span{width:14px;height:14px;border:2px solid #fff;border-radius:4px;border-bottom-color:transparent;border-right-color:transparent;transform:rotate(45deg);display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:18px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em}
.brand-sub{font-size:11px;color:var(--c-text-2);letter-spacing:.06em}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:12px}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--c-text-2);padding:22px 0}
.nav-link::after{content:"";position:absolute;left:0;bottom:16px;height:2px;width:0;border-radius:2px;background:var(--grad-brand);transition:width .22s cubic-bezier(.2,.7,.3,1)}
.nav-link:hover{color:var(--c-ink)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--c-ink);font-weight:600}
.nav-link.is-active::after{width:100%}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.command-search{position:relative;display:flex;align-items:center;gap:8px;width:300px;height:40px;padding:0 12px;border-radius:var(--r-pill);background:var(--c-surface-2);border:1px solid transparent;transition:background-color .22s,border-color .22s}
.command-search:focus-within{background:#fff;border-color:var(--c-ink)}
.command-search i{font-size:14px;color:var(--c-text-2)}
.command-search input{flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;font-size:14px;color:var(--c-text)}
.command-search input::placeholder{color:var(--c-text-2)}
.command-search kbd{font-family:inherit;font-size:13px;color:var(--c-text-2);background:#fff;border:1px solid var(--c-line);border-radius:6px;padding:1px 6px;line-height:1.4}
.icon-btn{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--c-text-2);font-size:14px;transition:background-color .22s,color .22s,transform .2s}
.icon-btn:hover{background:var(--c-surface-2);color:var(--c-ink)}
.icon-btn:active{transform:scale(.96)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--r-pill);font-size:15px;font-weight:600;line-height:1;white-space:nowrap;transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s,background-color .24s,border-color .24s,filter .24s,color .24s}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-ghost{background:#fff;color:var(--c-ink);border:1px solid var(--c-line)}
.btn-ghost:hover{border-color:var(--c-ink);background:var(--c-surface-2);color:var(--c-ink)}
.btn-light{background:#fff;color:var(--c-ink)}
.btn-light:hover{color:var(--c-ink);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.68)}
.btn-outline-light:hover{color:#fff;background:rgba(255,255,255,.12)}
.btn-sm{height:40px;padding:0 22px;font-size:14px}
.btn-header{height:40px;padding:0 20px;font-size:14px}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;align-items:center;justify-content:center;flex-direction:column;gap:4px}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .24s,opacity .24s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.mobile-panel{display:none;background:#fff;border-top:1px solid var(--c-line);border-radius:0 0 24px 24px;padding:12px 24px 24px;box-shadow:var(--sh-2)}
.mobile-panel.is-open{display:block}
.mobile-nav{display:flex;flex-direction:column}
.mobile-nav a{display:flex;align-items:center;height:48px;font-size:16px;font-weight:500;color:var(--c-text);border-bottom:1px solid var(--c-line)}
.mobile-nav a.is-active{color:var(--c-ink);font-weight:700}
.mobile-search{margin-top:16px}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--c-surface-2);padding:56px 0 64px}
.page-hero::before{content:"";position:absolute;top:-160px;right:-120px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle at 40% 40%,rgba(23,163,152,.22),rgba(242,160,61,.12) 55%,rgba(246,243,238,0) 72%);pointer-events:none}
.page-hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,rgba(23,163,152,.5),rgba(242,160,61,.35),rgba(246,243,238,0))}
.hero-inner{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text-2);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a{color:var(--c-text-2)}
.breadcrumb a:hover{color:var(--c-ink)}
.breadcrumb .sep{width:5px;height:5px;border-radius:50%;background:var(--grad-accent);display:inline-block}
.breadcrumb .current{color:var(--c-text-2)}
.page-hero h1{font-size:clamp(28px,3.6vw,44px);line-height:1.22;font-weight:700;max-width:760px}
.hero-lead{margin-top:16px;font-size:17px;color:var(--c-text-2);max-width:600px}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.stat-badge{display:flex;align-items:center;gap:10px;padding:12px 18px;border-radius:var(--r-m);border:1px solid transparent;background-image:linear-gradient(rgba(255,255,255,.94),rgba(255,255,255,.94)),var(--grad-brand);background-origin:border-box;background-clip:padding-box,border-box;box-shadow:var(--sh-1)}
.stat-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--grad-accent);flex:0 0 auto}
.stat-badge .num{font-size:20px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em}
.stat-badge .lbl{font-size:13px;color:var(--c-text-2)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.side-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);box-shadow:var(--sh-2);overflow:hidden}
.side-card-media{aspect-ratio:16/10;overflow:hidden}
.side-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.side-card:hover .side-card-media img{transform:scale(1.04)}
.side-card-body{padding:22px 24px 24px}
.side-card h2{font-size:18px;margin-bottom:14px}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--c-text-2);padding:9px 0;border-bottom:1px dashed var(--c-line)}
.check-list li:last-child{border-bottom:0}
.check-list i{color:var(--c-teal);font-size:13px;margin-top:7px}
.side-card-foot{margin-top:14px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.side-card-foot .tip{font-size:12px;color:var(--c-text-2)}

/* ---------- section base ---------- */
.section{padding:var(--sp-sec) 0}
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,2.8vw,34px);line-height:1.3}
.section-head p{margin-top:12px;color:var(--c-text-2);font-size:16px}
.divider-line{height:3px;width:64px;border-radius:3px;background:var(--grad-accent);margin:18px 0 0}

/* ---------- layout: toc + article ---------- */
.layout-wrap{display:flex;gap:40px;align-items:flex-start}
.toc-col{flex:0 0 268px;max-width:268px}
.content-col{flex:1 1 auto;min-width:0}
.toc-card{position:sticky;top:88px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);box-shadow:var(--sh-1);padding:22px}
.toc-title{font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--c-text-2);margin-bottom:12px}
.toc-list li a{display:block;padding:9px 0 9px 14px;font-size:14px;color:var(--c-text-2);border-left:2px solid transparent;transition:color .22s,border-color .22s,background-color .22s}
.toc-list li a .idx{font-variant-numeric:tabular-nums;color:var(--c-teal);margin-right:8px;font-size:12px;font-weight:700}
.toc-list li a:hover{color:var(--c-ink);background:var(--c-surface-2)}
.toc-list li a.is-current{color:var(--c-ink);font-weight:600;border-left-color:var(--c-teal);background:linear-gradient(90deg,rgba(23,163,152,.10),rgba(23,163,152,0))}
.toc-mobile-bar{display:none;margin-bottom:18px}
.toc-toggle{display:flex;align-items:center;justify-content:space-between;width:100%;height:48px;padding:0 18px;border-radius:var(--r-m);background:var(--c-surface);border:1px solid var(--c-line);font-size:15px;font-weight:600;color:var(--c-ink);box-shadow:var(--sh-1)}
.toc-toggle i{transition:transform .24s}
.toc-toggle[aria-expanded="true"] i{transform:rotate(180deg)}

/* ---------- article sections ---------- */
.section-block{scroll-margin-top:96px}
.section-block::before{content:"";display:block;height:1px;background:linear-gradient(90deg,rgba(23,163,152,.45),rgba(242,160,61,.24),rgba(246,243,238,0));margin-bottom:34px}
.section-block+.section-block{margin-top:64px}
.sec-num{display:block;font-size:28px;font-weight:700;letter-spacing:.02em;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.section-block h2{font-size:clamp(22px,2.2vw,28px);line-height:1.4;margin:8px 0 18px}
.section-block h3{font-size:18px;line-height:1.5;margin:28px 0 10px}
.section-block p{font-size:16px;color:var(--c-text);line-height:1.9}
.point-list{margin:20px 0 6px}
.point-list li{position:relative;padding:10px 0 10px 26px;font-size:15.5px;color:var(--c-text);border-bottom:1px solid var(--c-line)}
.point-list li:last-child{border-bottom:0}
.point-list li::before{content:"";position:absolute;left:2px;top:21px;width:14px;height:8px;border-left:2px solid var(--c-teal);border-bottom:2px solid var(--c-teal);transform:rotate(-45deg)}
.note-box{margin:22px 0;padding:16px 20px;background:rgba(23,163,152,.09);border-left:3px solid var(--c-teal);border-radius:12px;font-size:15px;color:var(--c-text-2)}
.note-box strong{color:var(--c-ink)}
.alert-box{margin:22px 0;padding:16px 20px;background:rgba(232,101,74,.08);border-left:3px solid var(--c-coral);border-radius:12px;font-size:15px;color:var(--c-text-2)}
.alert-box strong{color:var(--c-coral)}
.figure-rounded{margin:26px 0;border-radius:var(--r-m);overflow:hidden;border:1px solid var(--c-line);background:var(--c-surface)}
.figure-rounded img{width:100%;aspect-ratio:21/9;object-fit:cover;transition:transform .3s ease}
.figure-rounded:hover img{transform:scale(1.03)}
.figure-rounded figcaption{padding:12px 18px;font-size:13px;color:var(--c-text-2);background:var(--c-surface)}
.table-scroll{width:100%;overflow-x:auto;margin:24px 0;border:1px solid var(--c-line);border-radius:var(--r-m);background:var(--c-surface)}
table.compare{width:100%;border-collapse:collapse;min-width:620px;font-size:14.5px}
table.compare th,table.compare td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--c-line)}
table.compare thead th{background:rgba(23,163,152,.10);color:var(--c-ink);font-weight:700;font-size:14px;letter-spacing:.02em}
table.compare tbody tr:nth-child(even){background:var(--c-surface-2)}
table.compare tbody tr:last-child td{border-bottom:0}
table.compare td:first-child{font-weight:600;color:var(--c-ink);white-space:nowrap}

/* ---------- faq ---------- */
.faq-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);box-shadow:var(--sh-1);padding:28px}
.accordion-item{border-bottom:1px solid var(--c-line)}
.accordion-item:last-child{border-bottom:0}
.faq-heading{margin:0}
.faq-trigger{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;min-height:56px;padding:14px 0;text-align:left;font-size:17px;font-weight:600;color:var(--c-ink);transition:color .22s}
.faq-trigger:hover{color:var(--c-teal)}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--c-teal);border-radius:2px;transform:translate(-50%,-50%);transition:transform .26s ease,opacity .26s ease}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-trigger[aria-expanded="true"] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-panel{overflow:hidden;max-height:0;transition:max-height .3s ease}
.faq-panel p{padding:0 0 18px;margin:0;font-size:15px;color:var(--c-text-2)}
.faq-panel.is-open{max-height:400px}

/* ---------- glossary ---------- */
.glossary{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-xl);box-shadow:var(--sh-1);padding:36px}
.glossary-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 28px;margin-top:26px}
.glossary-item{padding:16px 18px;border-radius:var(--r-m);background:var(--c-surface-2);border-left:3px solid rgba(23,163,152,.5)}
.glossary-item dt{font-size:15px;font-weight:700;color:var(--c-ink);margin-bottom:6px}
.glossary-item dd{margin:0;font-size:14px;color:var(--c-text-2)}

/* ---------- cards ---------- */
.card-grid{display:flex;flex-wrap:wrap;gap:24px;margin-top:8px}
.card{flex:1 1 calc(33.333% - 16px);min-width:260px;display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);box-shadow:var(--sh-1);overflow:hidden;transition:transform .26s cubic-bezier(.2,.7,.3,1),box-shadow .26s}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.card-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--c-surface-2)}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.card:hover .card-thumb img{transform:scale(1.04)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.tag-chip{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--c-ink);background:var(--c-surface-2);border-radius:var(--r-pill);padding:4px 12px;margin-bottom:12px}
.card-title{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-title a{color:var(--c-ink)}
.card-title a:hover{color:var(--c-teal)}
.card-desc{font-size:14px;color:var(--c-text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-text-2)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-ink)}
.text-link i{font-size:12px;transition:transform .24s cubic-bezier(.2,.7,.3,1)}
.text-link:hover{color:var(--c-teal);text-decoration:underline;text-underline-offset:4px}
.text-link:hover i{transform:translateX(4px)}

/* ---------- cta ---------- */
.cta-card{position:relative;overflow:hidden;border-radius:var(--r-xl);background:var(--grad-brand);color:#fff;padding:52px 56px;box-shadow:var(--sh-2)}
.cta-card::before{content:"";position:absolute;right:-100px;top:-120px;width:440px;height:440px;border-radius:50%;border:1px solid rgba(255,255,255,.16);pointer-events:none}
.cta-card::after{content:"";position:absolute;right:-40px;bottom:-160px;width:360px;height:360px;border-radius:50%;border:1px solid rgba(255,255,255,.12);pointer-events:none}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:32px;align-items:center;justify-content:space-between}
.cta-copy{flex:1 1 460px;min-width:280px}
.cta-copy h2{color:#fff;font-size:clamp(24px,2.6vw,32px);line-height:1.35}
.cta-copy p{margin-top:14px;font-size:16px;color:rgba(255,255,255,.84)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-contact{margin-top:14px;font-size:13px;color:rgba(255,255,255,.72)}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--c-teal-deep);color:rgba(233,241,239,.78);padding:64px 0 24px;margin-top:0}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--grad-accent)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-name{color:#fff}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(233,241,239,.72);max-width:340px}
.social-row{display:flex;gap:10px;margin-top:18px}
.social-row a{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.08);color:rgba(233,241,239,.86);transition:background-color .24s,color .24s,transform .24s}
.social-row a:hover{background:rgba(255,255,255,.16);color:var(--c-amber);transform:translateY(-2px)}
.footer-title{font-size:14px;font-weight:700;color:#fff;letter-spacing:.04em;margin-bottom:16px}
.footer-list li{margin-bottom:10px}
.footer-list a{font-size:14px;color:rgba(233,241,239,.78)}
.footer-list a:hover{color:var(--c-amber)}
.contact-line{display:flex;align-items:flex-start;gap:10px;font-size:14px;margin-bottom:12px;color:rgba(233,241,239,.78)}
.contact-line i{width:16px;margin-top:6px;color:var(--c-teal);font-size:13px;flex:0 0 auto}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(233,241,239,.62)}
.footer-bottom a{color:rgba(233,241,239,.78)}
.footer-bottom a:hover{color:var(--c-amber)}

/* ---------- responsive ---------- */
@media screen and (max-width:1199px){
  .command-search{width:240px}
  .nav-links{gap:20px}
}
@media screen and (max-width:1023px){
  :root{--sp-sec:64px}
  .nav-links{display:none}
  .command-search{display:none}
  .nav-toggle{display:flex}
  .header-bar{height:56px}
  .logo-mark{width:32px;height:32px;border-radius:10px}
  .layout-wrap{flex-direction:column}
  .toc-col{flex:1 1 auto;max-width:100%;width:100%}
  .toc-card{display:none;position:static}
  .toc-card.is-open{display:block}
  .toc-mobile-bar{display:block}
  .cta-card{padding:40px 32px}
}
@media screen and (max-width:767px){
  :root{--sp-sec:48px}
  .container{padding:0 16px}
  .btn-header{display:none}
  .page-hero{padding:36px 0 48px}
  .hero-actions .btn{width:100%}
  .card{flex:1 1 100%}
  .glossary{padding:24px}
  .glossary-grid{grid-template-columns:1fr}
  .faq-card{padding:20px}
  .cta-card{padding:32px 22px;border-radius:24px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-bottom{flex-direction:column}
}
@media screen and (max-width:520px){
  .stat-badge{padding:10px 14px}
  .stat-badge .num{font-size:18px}
  .section-block h2{font-size:22px}
  .side-card-body{padding:18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}