/* roulang page: index */
:root{
  --brand-900:#0E4C63;
  --brand-700:#11617C;
  --brand-500:#14708F;
  --brand-050:rgba(20,112,143,.08);
  --brand-025:rgba(20,112,143,.04);
  --accent:#F4572E;
  --accent-dark:#D8431E;
  --lime:#B8DC55;
  --deep:#0B2B36;
  --bg:#F6F8F9;
  --surface:#FFFFFF;
  --surface-2:#EDF2F4;
  --line:#E4EAED;
  --line-dash:#D8E1E6;
  --text-1:#0F1E26;
  --text-2:#4A5B66;
  --text-3:#7A8B95;
  --ok:#1E9E6A;
  --warn:#D9822B;
  --err:#C0392B;
  --radius-sm:10px;
  --radius:14px;
  --radius-img:12px;
  --radius-lg:16px;
  --radius-xl:24px;
  --pill:999px;
  --shadow-1:0 1px 2px rgba(15,30,38,.06), 0 8px 24px rgba(15,30,38,.06);
  --shadow-2:0 12px 32px rgba(15,30,38,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec:104px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text-2);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-500);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--accent)}
button,input{font-family:inherit}
h1,h2,h3,h4{color:var(--text-1);margin:0;font-weight:700;letter-spacing:-.2px}
h1{font-size:44px;line-height:1.25;letter-spacing:-.5px}
h2{font-size:30px;line-height:1.3;font-weight:650}
h3{font-size:20px;line-height:1.4;font-weight:600;letter-spacing:0}
h4{font-size:17px;line-height:1.5;font-weight:600}
p{margin:0 0 20px}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.sec{padding:var(--sec) 0}
.sec-tight{padding:72px 0}
.sec-head{margin-bottom:48px;max-width:760px}
.sec-head h2{position:relative;padding-bottom:16px}
.sec-head h2::after{
  content:"";position:absolute;left:0;bottom:0;width:48px;height:4px;
  background:var(--brand-500);border-radius:2px;
}
.sec-head p{margin:18px 0 0;font-size:16px;color:var(--text-2)}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.meta{font-size:13px;letter-spacing:.02em;color:var(--text-3)}
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--pill);
  background:var(--brand-050);color:var(--brand-700);
  font-size:13px;line-height:1.5;font-weight:500;white-space:nowrap;
}
.badge-lime{background:rgba(184,220,85,.22);color:#4C6A12}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  cursor:pointer;transition:all .2s var(--ease);text-align:center;
}
.btn-primary{background:var(--brand-500);color:#fff;border-color:var(--brand-500)}
.btn-primary:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-1)}
.btn-accent{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-accent:hover{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--brand-500);border-color:var(--brand-500)}
.btn-ghost:hover{background:var(--brand-050);color:var(--brand-700);border-color:var(--brand-700)}
.btn-text{background:none;border:none;padding:8px 0;color:var(--brand-500);font-weight:600;display:inline-flex;align-items:center;gap:8px;min-height:44px}
.btn-text i{transition:transform .2s var(--ease)}
.btn-text:hover{color:var(--accent)}
.btn-text:hover i{transform:translateX(4px)}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:transparent;border-bottom:1px solid transparent;
  transition:background .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.site-header.is-scrolled{
  background:#fff;border-bottom-color:var(--line);
  box-shadow:0 1px 2px rgba(15,30,38,.05),0 8px 24px rgba(15,30,38,.05);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
.nav-left{display:flex;align-items:center;gap:28px;min-width:0}
.nav-right{display:flex;align-items:center;gap:14px;padding-left:20px;border-left:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:32px;height:32px;border-radius:9px;background:var(--brand-900);
  color:#fff;font-weight:700;font-size:16px;display:flex;align-items:center;justify-content:center;
  letter-spacing:-.5px;flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:16px;color:var(--text-1);letter-spacing:-.3px}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.04em}
.nav-menu{display:flex;align-items:center;gap:26px}
.nav-menu a{
  position:relative;font-size:15px;font-weight:500;color:var(--text-1);
  padding:6px 0;min-height:44px;display:inline-flex;align-items:center;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:8px;height:2px;border-radius:2px;
  background:transparent;transition:background .2s var(--ease);
}
.nav-menu a:hover{color:var(--brand-500)}
.nav-menu a:hover::after{background:var(--accent)}
.nav-menu a.is-active{color:var(--brand-500)}
.nav-menu a.is-active::after{background:var(--brand-500)}
.nav-search{
  display:flex;align-items:center;gap:8px;height:38px;padding:0 12px;
  border:1px solid var(--line);border-radius:var(--pill);background:#fff;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search i{color:var(--text-3);font-size:13px}
.nav-search input{border:none;outline:none;background:transparent;font-size:14px;width:150px;color:var(--text-1)}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(20,112,143,.12)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#fff;color:var(--text-1);font-size:18px;align-items:center;justify-content:center;cursor:pointer;
}
.drawer{
  position:fixed;inset:0 0 0 auto;width:min(360px,88vw);background:#fff;z-index:1100;
  transform:translateX(100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:24px;box-shadow:var(--shadow-2);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;font-size:18px;cursor:pointer;color:var(--text-1)}
.drawer nav{display:flex;flex-direction:column;gap:4px;flex:1}
.drawer nav a{font-size:17px;font-weight:500;color:var(--text-1);padding:14px 0;border-bottom:1px solid var(--line);min-height:44px}
.drawer nav a.is-active{color:var(--brand-500)}
.drawer .btn{width:100%;margin-top:20px}
.drawer-mask{position:fixed;inset:0;background:rgba(11,43,54,.42);z-index:1050;opacity:0;pointer-events:none;transition:opacity .28s var(--ease)}
.drawer-mask.is-open{opacity:1;pointer-events:auto}

/* ============ Hero ============ */
.hero{position:relative;padding:calc(64px + 40px) 0 88px;background:linear-gradient(180deg,#F2F6F7 0%,var(--bg) 100%);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:55fr 45fr;gap:48px;align-items:center;min-height:560px}
.hero-copy h1{margin-bottom:20px}
.hero-copy h1 .hl{color:var(--brand-500)}
.hero-sub{font-size:19px;line-height:1.7;color:var(--text-2);max-width:520px;margin-bottom:32px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:36px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:0;border-top:1px dashed var(--line-dash);padding-top:22px}
.hero-metrics li{display:flex;flex-direction:column;padding:0 24px;border-left:1px solid var(--line)}
.hero-metrics li:first-child{padding-left:0;border-left:none}
.hero-metrics b{font-size:17px;color:var(--brand-900);font-weight:700}
.hero-metrics span{font-size:13px;color:var(--text-3)}
.hero-media{position:relative}
.hero-figure{
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-1);
  border:1px solid var(--line);background:#fff;
}
.hero-figure img{width:100%;aspect-ratio:3/2;object-fit:cover}
.float-card{
  position:absolute;left:-32px;bottom:-28px;width:264px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;
  box-shadow:var(--shadow-2);
}
.float-card .num{font-size:34px;font-weight:700;color:var(--brand-500);line-height:1.1}
.float-card .num small{font-size:15px;font-weight:600;color:var(--brand-700);margin-left:4px}
.float-card p{font-size:13px;color:var(--text-3);margin:8px 0 12px;line-height:1.6}

/* ============ 主张条 ============ */
.claim{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:22px 0}
.claim-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.claim-inner strong{font-size:17px;color:var(--brand-900);font-weight:650}
.claim-badges{display:flex;gap:10px;flex-wrap:wrap}

/* ============ 理念区 ============ */
.story-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px}
.story-index{position:sticky;top:110px}
.story-index li{display:flex;gap:18px;padding-bottom:28px;position:relative}
.story-index li:not(:last-child)::after{content:"";position:absolute;left:17px;top:44px;bottom:4px;width:1px;background:var(--line)}
.story-index b{
  width:36px;height:36px;flex-shrink:0;border-radius:50%;background:var(--brand-050);
  color:var(--brand-500);font-size:15px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.story-index span{font-size:15px;color:var(--text-2);font-weight:500;line-height:1.7}
.story-body{display:flex;flex-direction:column;gap:56px}
.story-item{display:grid;grid-template-columns:1fr;gap:0}
.story-item p{font-size:17px;color:var(--text-2);max-width:680px}
.story-item h3{margin-bottom:14px}
.story-item figure{margin:24px 0 0;border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);background:#fff}
.story-item figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .22s var(--ease)}
.story-item figure:hover img{transform:scale(1.03)}
.story-item figcaption{font-size:13px;color:var(--text-3);padding:10px 4px 0}

/* ============ 精选内容 bento ============ */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(20,112,143,.25)}
.card figure{margin:0;overflow:hidden;background:var(--surface-2)}
.card figure img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .22s var(--ease)}
.card:hover figure img{transform:scale(1.03)}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.card-body h3{margin:12px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:15px;color:var(--text-2);margin:0 0 18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line)}
.bento-a{grid-column:span 7}
.bento-b{grid-column:span 5}
.bento-c,.bento-d,.bento-e{grid-column:span 4}
.bento-a figure img,.bento-b figure img{aspect-ratio:16/9}
.card-text{
  background:var(--brand-050);border:1px solid rgba(20,112,143,.16);
  padding:26px 24px;justify-content:space-between;
}
.card-text h3{color:var(--brand-900)}
.card-text .dotlist{margin-top:auto}
.dotlist li{position:relative;padding-left:18px;font-size:15px;color:var(--brand-900);margin-bottom:10px}
.dotlist li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;background:var(--lime)}

/* ============ 最新信息 ============ */
.cms-wrap{display:grid;grid-template-columns:160px 1fr;gap:40px;align-items:start}
.cms-filter{position:sticky;top:106px;border-left:1px solid var(--line);padding-left:18px}
.cms-filter h3{font-size:14px;color:var(--text-3);font-weight:600;letter-spacing:.04em;margin-bottom:14px}
.cms-filter a{display:block;font-size:15px;color:var(--text-2);padding:9px 0;min-height:44px;border-bottom:1px dashed var(--line-dash)}
.cms-filter a:hover,.cms-filter a.is-active{color:var(--brand-500);font-weight:600}
.cms-list{border-top:1px solid var(--line);min-height:220px}
.cms-item{
  display:grid;grid-template-columns:130px 1fr 44px;gap:20px;align-items:flex-start;
  padding:24px 0;border-bottom:1px solid var(--line);
  color:inherit;transition:background .2s var(--ease),padding .2s var(--ease);
}
.cms-item:hover{background:var(--surface);color:inherit;padding-left:14px}
.cms-item:hover .cms-title{color:var(--brand-500)}
.cms-date{display:flex;flex-direction:column;gap:6px}
.cms-date .d{font-size:14px;font-weight:600;color:var(--brand-500)}
.cms-title{font-size:18px;line-height:1.5;font-weight:600;color:var(--text-1);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:color .2s var(--ease)}
.cms-summary{font-size:15px;color:var(--text-2);margin:8px 0 0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-arrow{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--brand-500);transition:all .2s var(--ease)}
.cms-item:hover .cms-arrow{background:var(--brand-500);border-color:var(--brand-500);color:#fff;transform:translateX(4px)}
.cms-empty{min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center;padding:40px 20px}
.cms-empty i{font-size:40px;color:var(--brand-500)}
.cms-empty strong{font-size:16px;color:var(--text-1)}
.cms-empty span{font-size:14px;color:var(--text-3)}
.skeleton{display:flex;flex-direction:column;gap:14px;padding:24px 0}
.skeleton span{height:14px;border-radius:8px;background:linear-gradient(90deg,#E9EEF0,#F4F7F8,#E9EEF0);background-size:200% 100%;animation:sk 1.4s linear infinite}
.skeleton span:nth-child(1){width:60%}
.skeleton span:nth-child(2){width:90%}
.skeleton span:nth-child(3){width:40%}
@keyframes sk{0%{background-position:200% 0}100%{background-position:-200% 0}}

/* ============ 信任背书 ============ */
.trust{background:var(--surface-2)}
.trust-grid{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:stretch}
.trust-metrics{
  background:var(--deep);border-radius:var(--radius-xl);padding:40px;color:#E8F1F4;
  display:grid;grid-template-columns:1fr 1fr;gap:32px 24px;
}
.trust-metrics .num{font-size:40px;font-weight:700;line-height:1.1;color:#fff;letter-spacing:-1px}
.trust-metrics .num small{font-size:16px;font-weight:600;color:var(--lime);margin-left:4px}
.trust-metrics p{font-size:14px;color:rgba(232,241,244,.72);margin:10px 0 0}
.logo-wall{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;align-content:center}
.logo-cell{
  height:76px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:14px;font-weight:600;color:#8C9BA3;filter:grayscale(1);
  transition:all .2s var(--ease);padding:8px;
}
.logo-cell:hover{filter:grayscale(0);color:var(--brand-500);border-color:rgba(20,112,143,.25);transform:translateY(-2px)}
.quotes{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:36px}
.quote{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.avatar{width:40px;height:40px;border-radius:50%;background:var(--brand-050);color:var(--brand-500);
  display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}
.quote p{font-size:15px;color:var(--text-2);margin:0 0 8px}
.quote .meta{margin:0}

/* ============ FAQ ============ */
.faq-list{max-width:900px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:none;text-align:left;padding:22px 44px 22px 0;
  font-size:17px;font-weight:600;color:var(--text-1);position:relative;cursor:pointer;min-height:44px;
}
.faq-q::after{
  content:"+";position:absolute;right:8px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--brand-500);transition:transform .22s var(--ease);
}
.faq-q[aria-expanded="true"]{color:var(--brand-500)}
.faq-q[aria-expanded="true"]::after{content:"+";transform:translateY(-50%) rotate(45deg)}
.faq-a{padding:0 44px 24px 0;font-size:15px;line-height:1.8;color:var(--text-2)}
.faq-item.open{position:relative}
.faq-item.open::before{content:"";position:absolute;left:-16px;top:22px;bottom:22px;width:3px;background:var(--brand-500);border-radius:2px}

/* ============ CTA ============ */
.cta-band{
  background:var(--deep);border-radius:var(--radius-xl);padding:64px;
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;color:#E8F1F4;
}
.cta-band h2{color:#fff;margin-bottom:14px}
.cta-band h2::after{background:var(--lime)}
.cta-band p{color:rgba(232,241,244,.78);margin:0;font-size:16px}
.sub-form{display:flex;gap:12px}
.sub-form input{
  flex:1;height:48px;border-radius:var(--radius-sm);border:1px solid transparent;
  padding:0 16px;font-size:15px;background:#fff;color:var(--text-1);outline:none;
}
.sub-form input:focus{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(20,112,143,.12)}
.sub-note{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(232,241,244,.68);margin-top:14px}
.sub-note input{width:16px;height:16px;accent-color:var(--accent)}
.form-msg{font-size:13px;margin-top:12px;color:var(--lime);display:none}

/* ============ 页脚 ============ */
.site-footer{background:var(--deep);color:rgba(232,241,244,.78);padding:72px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:4fr 3fr 3fr 4fr;gap:40px;padding-bottom:48px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text em{color:rgba(232,241,244,.6)}
.footer-brand p{margin:18px 0 0;max-width:280px}
.footer-contact{display:flex;flex-direction:column;gap:8px;margin-top:18px}
.footer-contact a{color:rgba(232,241,244,.78)}
.socials{display:flex;gap:10px;margin-top:20px}
.socials a{width:40px;height:40px;border-radius:50%;border:1px solid rgba(232,241,244,.24);
  display:flex;align-items:center;justify-content:center;color:#E8F1F4}
.socials a:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:rgba(232,241,244,.78);display:inline-flex;min-height:32px;align-items:center}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-form{display:flex;gap:10px;margin-top:16px}
.footer-form input{flex:1;height:44px;border-radius:var(--radius-sm);border:1px solid rgba(232,241,244,.24);
  background:rgba(255,255,255,.06);color:#fff;padding:0 14px;font-size:14px;outline:none}
.footer-form input::placeholder{color:rgba(232,241,244,.5)}
.footer-form input:focus{border-color:var(--lime)}
.footer-form button{height:44px;padding:0 18px;border-radius:var(--radius-sm);border:none;background:var(--accent);color:#fff;font-weight:600;cursor:pointer;transition:background .2s var(--ease)}
.footer-form button:hover{background:var(--accent-dark)}
.footer-bottom{
  border-top:1px solid rgba(232,241,244,.16);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(232,241,244,.6);
}
.footer-bottom a{color:rgba(232,241,244,.6)}
.footer-bottom a:hover{color:#fff}
.to-top{display:inline-flex;align-items:center;gap:8px;min-height:44px}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container{max-width:960px}
  h1{font-size:38px}
  .cms-wrap{grid-template-columns:1fr}
  .cms-filter{position:static;border-left:none;padding-left:0;display:flex;gap:18px;flex-wrap:wrap;border-bottom:1px solid var(--line);padding-bottom:12px}
  .cms-filter h3{width:100%;margin-bottom:0}
  .cms-filter a{border-bottom:none;padding:6px 14px;border-radius:var(--pill);background:var(--brand-050);font-size:14px;min-height:38px;display:inline-flex;align-items:center}
}
@media (max-width:991px){
  :root{--sec:72px}
  .nav-menu,.nav-search{display:none}
  .nav-toggle{display:inline-flex}
  .nav-right{border-left:none;padding-left:0}
  .nav-right .nav-cta{display:none}
  .hero{padding:calc(64px + 32px) 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:40px;min-height:auto}
  .hero-figure img{aspect-ratio:16/9}
  .float-card{position:static;width:100%;left:0;bottom:0;margin-top:16px}
  .story-grid{grid-template-columns:1fr;gap:36px}
  .story-index{position:static}
  .bento-a,.bento-b{grid-column:span 12}
  .bento-c,.bento-d,.bento-e{grid-column:span 6}
  .trust-grid{grid-template-columns:1fr}
  .logo-wall{grid-template-columns:repeat(3,1fr)}
  .cta-band{grid-template-columns:1fr;padding:48px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .quotes{grid-template-columns:1fr}
}
@media (max-width:767px){
  :root{--sec:56px}
  h1{font-size:28px;line-height:1.35}
  h2{font-size:24px}
  body{font-size:15px}
  .hero-sub{font-size:17px}
  .hero-actions .btn{width:100%}
  .hero-metrics li{padding:0 16px}
  .hero-metrics b{font-size:15px}
  .bento-c,.bento-d,.bento-e{grid-column:span 12}
  .card figure img,.bento-a figure img,.bento-b figure img{aspect-ratio:16/9}
  .cms-item{grid-template-columns:1fr;gap:10px}
  .cms-arrow{display:none}
  .cms-title{white-space:normal}
  .trust-metrics{padding:28px;gap:24px 16px}
  .trust-metrics .num{font-size:28px}
  .logo-wall{grid-template-columns:repeat(2,1fr)}
  .sub-form{flex-direction:column}
  .sub-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:575px){
  .container{padding:0 16px}
  .sec{padding:56px 0}
  .claim-inner strong{font-size:16px}
  .quote{flex-direction:column;gap:10px}
}

/* roulang page: article */
:root{
  --brand-900:#0B2B36;
  --brand-700:#0E4C63;
  --brand-500:#14708F;
  --accent:#F4572E;
  --lime:#B8DC55;
  --bg:#F6F8F9;
  --surface:#FFFFFF;
  --surface-2:#EDF2F4;
  --line:#E4EAED;
  --line-soft:#D8E1E6;
  --text-1:#0F1E26;
  --text-2:#4A5B66;
  --text-3:#7A8B95;
  --on-dark:#E8F1F4;
  --ok:#1E9E6A;
  --warn:#D9822B;
  --err:#C0392B;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-lg:24px;
  --shadow-sm:0 1px 2px rgba(15,30,38,.06),0 8px 24px rgba(15,30,38,.06);
  --shadow-hover:0 12px 32px rgba(15,30,38,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
  --sp-section:110px;
  --container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text-2);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:var(--brand-500)}
a:hover{color:var(--accent)}
button,input{font-family:inherit}
h1,h2,h3,h4{color:var(--text-1);margin:0;font-weight:650;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.86);
  border-bottom:1px solid transparent;
  transition:background var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
  backdrop-filter:saturate(160%) blur(8px);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.98);
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px rgba(15,30,38,.06);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  min-height:64px;gap:24px;
}
.nav-left{display:flex;align-items:center;gap:32px;min-width:0}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-1)}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  background:linear-gradient(140deg,var(--brand-700),var(--brand-500));
  color:#fff;font-weight:700;font-size:18px;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:-.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:700;color:var(--text-1);letter-spacing:.01em}
.brand-text em{font-style:normal;font-size:12px;color:var(--text-3);letter-spacing:.04em}
.nav-menu{display:flex;align-items:center;gap:26px}
.nav-menu a{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 0;transition:color var(--dur) var(--ease);
}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.nav-menu a:hover{color:var(--brand-700)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.is-active{color:var(--brand-500)}
.nav-menu a.is-active::after{background:var(--brand-500);transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:18px;padding-left:18px;border-left:1px solid var(--line)}
.nav-search{
  display:flex;align-items:center;gap:8px;
  background:var(--surface-2);border:1px solid var(--line);
  border-radius:999px;padding:7px 14px;min-width:210px;
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-search i{color:var(--text-3);font-size:13px}
.nav-search input{
  border:0;background:transparent;outline:none;width:100%;
  font-size:14px;color:var(--text-1);
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search:focus-within{border-color:var(--brand-500);background:#fff;box-shadow:0 0 0 3px rgba(20,112,143,.12)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:12px 22px;border-radius:var(--radius-btn);
  border:1.5px solid transparent;cursor:pointer;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
  min-height:44px;
}
.btn-primary{background:var(--brand-500);color:#fff;border-color:var(--brand-500)}
.btn-primary:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-accent:hover{background:#D9441F;border-color:#D9441F;color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:var(--brand-700)}
.btn-ghost:hover{background:rgba(20,112,143,.08);color:var(--brand-700);transform:translateY(-1px)}
.btn-quiet{background:transparent;border-color:var(--line);color:var(--text-2)}
.btn-quiet:hover{border-color:var(--brand-500);color:var(--brand-500);background:rgba(20,112,143,.06)}
.btn-link{background:none;border:0;color:var(--brand-500);padding:6px 0;min-height:0;font-weight:600}
.btn-link:hover{color:var(--accent)}
.btn-link i{transition:transform var(--dur) var(--ease)}
.btn-link:hover i{transform:translateX(4px)}
.btn-primary.nav-cta{padding:10px 20px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:#fff;color:var(--brand-700);
  font-size:18px;align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--brand-500);color:var(--brand-500)}

/* ---------- page hero strip ---------- */
.page-strip{
  background:linear-gradient(180deg,#fff 0%,var(--surface-2) 100%);
  border-bottom:1px solid var(--line);
  padding:26px 0 30px;
}
.crumb{font-size:13px;color:var(--text-3);display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:22px}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--brand-500)}
.crumb .sep{color:var(--line-soft)}
.crumb .current{color:var(--brand-500);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.strip-row{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(20,112,143,.08);color:var(--brand-500);
  border-radius:999px;padding:5px 14px;font-size:13px;font-weight:600;
}
.badge-lime{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(184,220,85,.28);color:#3F5A10;
  border-radius:999px;padding:5px 14px;font-size:13px;font-weight:600;
}

/* ---------- article layout ---------- */
.article-main{padding:56px 0 0}
.article-wrap{
  display:grid;
  grid-template-columns:170px minmax(0,780px);
  gap:48px;
  justify-content:center;
  align-items:start;
}
.toc{position:sticky;top:96px;font-size:14px}
.toc-title{font-size:12px;letter-spacing:.08em;color:var(--text-3);font-weight:600;margin-bottom:12px}
.toc a{
  display:block;padding:6px 0 6px 12px;color:var(--text-3);font-size:14px;
  border-left:2px solid var(--line);line-height:1.5;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.toc a:hover{color:var(--brand-500);border-left-color:var(--brand-500)}
.toc a.is-now{color:var(--brand-700);font-weight:700;border-left-color:var(--brand-700)}
.toc-empty{color:var(--text-3);font-size:13px;line-height:1.7}

.article-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:44px 46px 40px}
.article-head{border-bottom:1px dashed var(--line-soft);padding-bottom:24px;margin-bottom:28px}
.article-head h1{font-size:36px;line-height:1.35;letter-spacing:-.5px;margin:14px 0 14px}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--text-3);letter-spacing:.02em;
}
.article-meta .dot{color:var(--line-soft)}
.article-meta .num{font-variant-numeric:tabular-nums;color:var(--text-2)}
.share-row{display:flex;align-items:center;gap:10px;margin-top:16px}
.share-row span{font-size:13px;color:var(--text-3);margin-right:2px}
.share-btn{
  width:36px;height:36px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;font-size:14px;
  transition:all var(--dur) var(--ease);cursor:pointer;
}
.share-btn:hover{background:var(--brand-500);border-color:var(--brand-500);color:#fff;transform:translateY(-1px)}

.fig-block{margin:0 0 30px}
.fig-block img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-img)}
.fig-cap{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}

.toc-mobile{
  display:none;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:var(--surface-2);margin-bottom:24px;
}
.toc-mobile summary{
  cursor:pointer;list-style:none;padding:12px 16px;font-size:14px;font-weight:600;color:var(--brand-700);
  display:flex;align-items:center;justify-content:space-between;
}
.toc-mobile summary::-webkit-details-marker{display:none}
.toc-mobile[open] summary i{transform:rotate(180deg)}
.toc-mobile summary i{transition:transform var(--dur) var(--ease)}
.toc-mobile .toc-body{padding:0 16px 14px}
.toc-mobile .toc-body a{display:block;padding:7px 0;font-size:14px;color:var(--text-2);border-bottom:1px dashed var(--line)}
.toc-mobile .toc-body a:last-child{border-bottom:0}

/* article body typography */
.article-body{font-size:17px;color:var(--text-2)}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 24px;line-height:1.85}
.article-body h2{
  font-size:26px;line-height:1.35;font-weight:650;color:var(--text-1);
  margin:48px 0 16px;padding-left:16px;border-left:4px solid var(--brand-500);
}
.article-body h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--text-1);margin:32px 0 12px}
.article-body h4{font-size:17px;font-weight:600;color:var(--text-1);margin:24px 0 10px}
.article-body ul,.article-body ol{padding-left:24px;margin:0 0 24px}
.article-body li{margin-bottom:10px;line-height:1.8}
.article-body li::marker{color:var(--brand-500);font-weight:700}
.article-body blockquote{
  background:var(--bg);border-left:3px solid var(--brand-500);
  border-radius:0 var(--radius-img) var(--radius-img) 0;
  padding:20px;margin:0 0 24px;font-size:15px;color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{max-width:100%;height:auto;border-radius:var(--radius-img);margin:0 0 24px}
.article-body a{color:var(--brand-500);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--accent)}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 24px;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;line-height:1.6}
.article-body th{background:var(--surface-2);font-weight:600;color:var(--text-1)}
.article-body tbody tr:nth-child(even){background:#FAFCFC}
.article-body strong{color:var(--text-1);font-weight:650}

.empty-state{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;text-align:center;padding:36px 20px;color:var(--text-2);
}
.empty-state i{font-size:44px;color:var(--line-soft)}
.empty-state strong{font-size:17px;color:var(--text-1)}
.empty-state p{font-size:14px;color:var(--text-3);max-width:420px}

.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:36px;padding-top:24px;border-top:1px dashed var(--line-soft)}
.tag-row .label{font-size:13px;color:var(--text-3);margin-right:4px}
.tag{
  display:inline-flex;align-items:center;padding:5px 14px;border-radius:999px;
  background:rgba(20,112,143,.08);color:var(--brand-500);font-size:13px;font-weight:500;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.tag:hover{background:rgba(20,112,143,.16);color:var(--brand-700)}

.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:40px}
.post-nav-card{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px 22px;box-shadow:var(--shadow-sm);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.post-nav-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(20,112,143,.35)}
.post-nav-card .dir{font-size:12px;letter-spacing:.06em;color:var(--accent);font-weight:600}
.post-nav-card h3{font-size:17px;margin:8px 0 6px;line-height:1.5}
.post-nav-card p{font-size:14px;color:var(--text-3);line-height:1.7}

.center-cta{display:flex;justify-content:center;margin-top:32px}

/* ---------- sections ---------- */
.section{padding:var(--sp-section) 0 0}
.section-head{margin-bottom:36px}
.section-head h2{
  font-size:30px;line-height:1.3;font-weight:650;position:relative;padding-bottom:16px;
}
.section-head h2::after{
  content:"";position:absolute;left:0;bottom:0;width:48px;height:4px;border-radius:2px;background:var(--brand-500);
}
.section-head .sub{font-size:15px;color:var(--text-3);margin-top:14px;max-width:720px}
.section-head.with-link{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);overflow:hidden;height:100%;
  display:flex;flex-direction:column;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(20,112,143,.25)}
.card-media{overflow:hidden}
.card-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform 220ms var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:14px;color:var(--text-3);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;padding-top:12px;border-top:1px dashed var(--line-soft);font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:8px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}

/* faq */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;text-align:left;cursor:pointer;
  padding:22px 44px 22px 0;position:relative;
  font-size:17px;font-weight:600;color:var(--text-1);line-height:1.6;
}
.faq-q .icon{
  position:absolute;right:6px;top:26px;color:var(--brand-500);font-size:15px;
  transition:transform var(--dur) var(--ease);
}
.faq-q[aria-expanded="true"]{color:var(--brand-700);padding-left:16px}
.faq-q[aria-expanded="true"]::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;background:var(--brand-500);border-radius:2px;
}
.faq-q[aria-expanded="true"] .icon{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height 260ms var(--ease);
}
.faq-a .inner{padding:0 40px 24px 0;font-size:15px;line-height:1.8;color:var(--text-2)}

/* dark cta band */
.cta-band{
  background:var(--brand-900);border-radius:var(--radius-lg);
  padding:56px 56px;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;
  margin-top:8px;
}
.cta-band h2{color:#fff;font-size:28px;line-height:1.35}
.cta-band p{color:rgba(232,241,244,.74);font-size:15px;margin-top:14px;line-height:1.8}
.cta-form{display:flex;flex-direction:column;gap:12px}
.cta-form .row-inline{display:flex;gap:12px}
.cta-form input[type=email]{
  flex:1;height:48px;border-radius:var(--radius-btn);border:1px solid rgba(255,255,255,.22);
  background:#fff;color:var(--text-1);padding:0 16px;font-size:15px;outline:none;
}
.cta-form input[type=email]:focus{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(20,112,143,.18)}
.cta-form .hint{font-size:13px;color:rgba(232,241,244,.6)}
.cta-points{display:flex;flex-wrap:wrap;gap:18px;margin-top:18px}
.cta-points span{font-size:14px;color:rgba(232,241,244,.82);display:inline-flex;align-items:center;gap:8px}
.cta-points i{color:var(--lime);font-size:13px}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:var(--on-dark);margin-top:var(--sp-section);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr 1.2fr;gap:40px}
.footer-brand .brand{color:#fff}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text em{color:rgba(232,241,244,.6)}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-brand p{font-size:14px;color:rgba(232,241,244,.7);margin:16px 0 14px;line-height:1.8;max-width:300px}
.footer-contact{display:flex;flex-direction:column;gap:6px;font-size:13px;color:rgba(232,241,244,.6)}
.socials{display:flex;gap:10px;margin-top:16px}
.socials a{
  width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.16);
  display:inline-flex;align-items:center;justify-content:center;color:rgba(232,241,244,.8);
  transition:all var(--dur) var(--ease);
}
.socials a:hover{background:var(--brand-500);border-color:var(--brand-500);color:#fff;transform:translateY(-1px)}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(232,241,244,.72)}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-form{display:flex;gap:8px;margin-top:14px}
.footer-form input{
  flex:1;height:44px;border-radius:var(--radius-btn);border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.08);color:#fff;padding:0 14px;font-size:14px;outline:none;
}
.footer-form input::placeholder{color:rgba(232,241,244,.5)}
.footer-form input:focus{border-color:var(--brand-500);background:rgba(255,255,255,.14)}
.footer-form button{
  height:44px;padding:0 18px;border:0;border-radius:var(--radius-btn);
  background:var(--accent);color:#fff;font-size:14px;font-weight:600;cursor:pointer;
  transition:background var(--dur) var(--ease);
}
.footer-form button:hover{background:#D9441F}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:rgba(232,241,244,.6);flex-wrap:wrap;
}
.to-top{color:rgba(232,241,244,.75);display:inline-flex;align-items:center;gap:8px;font-size:13px}
.to-top:hover{color:#fff}
.to-top i{transition:transform var(--dur) var(--ease)}
.to-top:hover i{transform:translateY(-3px)}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  :root{--sp-section:84px}
  .container{max-width:960px}
  .article-wrap{grid-template-columns:minmax(0,760px);gap:0;justify-content:center}
  .toc{display:none}
  .toc-mobile{display:block}
  .article-head h1{font-size:32px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:991px){
  .container{max-width:100%}
  .nav-menu{
    position:fixed;top:0;right:0;bottom:0;width:min(360px,86vw);
    background:#fff;flex-direction:column;align-items:stretch;gap:4px;
    padding:84px 24px 28px;z-index:1040;overflow-y:auto;
    transform:translateX(102%);transition:transform 220ms var(--ease);
    box-shadow:-18px 0 44px rgba(15,30,38,.16);
  }
  .nav-menu a{font-size:17px;padding:14px 0;border-bottom:1px solid var(--line)}
  .nav-menu a::after{display:none}
  .nav-menu a.is-active{color:var(--brand-500)}
  body.nav-open .nav-menu{transform:translateX(0)}
  body.nav-open::before{
    content:"";position:fixed;inset:0;background:rgba(11,43,54,.45);z-index:1035;
  }
  body.nav-open{overflow:hidden}
  .nav-toggle{display:inline-flex}
  .nav-search{display:none}
  .nav-right{border-left:0;padding-left:0;gap:10px}
  .nav-cta{display:none}
  .article-panel{padding:32px 26px 30px}
  .article-head h1{font-size:28px}
  .post-nav{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr;padding:40px 28px}
  .article-body{font-size:16px}
}
@media (max-width:767px){
  :root{--sp-section:64px}
  .container{padding:0 18px}
  .grid-3{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .brand-text strong{font-size:15px}
  .page-strip{padding:20px 0 24px}
  .article-main{padding-top:36px}
  .article-body h2{font-size:22px;margin-top:38px}
  .article-body h3{font-size:18px}
  .section-head h2{font-size:24px}
  .cta-band h2{font-size:22px}
  .cta-form .row-inline{flex-direction:column}
  .btn.full-sm{width:100%}
}
@media (max-width:575px){
  body{font-size:15px;line-height:1.75}
  .article-body{font-size:15px}
  .article-head h1{font-size:26px}
  .article-panel{padding:24px 18px 26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root{
  --brand-900:#0B2B36;
  --brand-700:#0E4C63;
  --brand-500:#14708F;
  --accent:#F4572E;
  --lime:#B8DC55;
  --bg:#F6F8F9;
  --surface:#FFFFFF;
  --surface-2:#EDF2F4;
  --line:#E4EAED;
  --line-dash:#D8E1E6;
  --text-1:#0F1E26;
  --text-2:#4A5B66;
  --text-3:#7A8B95;
  --text-inv:#E8F1F4;
  --ok:#1E9E6A;
  --warn:#D9822B;
  --err:#C0392B;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-input:10px;
  --radius-block:24px;
  --shadow-card:0 1px 2px rgba(15,30,38,.06), 0 8px 24px rgba(15,30,38,.06);
  --shadow-card-hover:0 12px 32px rgba(15,30,38,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:200ms;
  --nav-h:62px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text-2);
  background:var(--bg);
  text-align:left;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--brand-500);text-decoration:none;transition:color var(--t) var(--ease)}
a:hover{color:var(--accent)}
h1,h2,h3,h4{color:var(--text-1);margin:0;line-height:1.3}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;
  font-size:15px;font-weight:600;line-height:1;padding:12px 22px;border-radius:var(--radius-btn);
  border:1.5px solid transparent;cursor:pointer;transition:background var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease),transform var(--t) var(--ease),box-shadow var(--t) var(--ease);}
.btn-primary{background:var(--brand-500);color:#fff;border-color:var(--brand-500)}
.btn-primary:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(14,76,99,.22)}
.btn-outline{background:transparent;color:var(--brand-700);border-color:var(--brand-700)}
.btn-outline:hover{background:rgba(14,76,99,.08);color:var(--brand-700);transform:translateY(-1px)}
.btn-accent{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-accent:hover{background:#d8451f;border-color:#d8451f;color:#fff;transform:translateY(-1px)}
.btn-text{background:transparent;border-color:transparent;color:var(--brand-500);padding:10px 4px;min-height:44px}
.btn-text i{transition:transform var(--t) var(--ease)}
.btn-text:hover{color:var(--accent)}
.btn-text:hover i{transform:translateX(4px)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--surface-2);
  border-bottom:1px solid transparent;
  transition:background var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.site-header.is-scrolled{background:rgba(255,255,255,.97);border-bottom-color:var(--line);box-shadow:0 6px 20px rgba(15,30,38,.07)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--nav-h)}
.nav-left,.nav-right{display:flex;align-items:center;gap:20px}
.nav-left{padding-right:20px;border-right:1px solid var(--line);flex:1 1 auto;min-width:0}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-1)}
.brand:hover{color:var(--text-1)}
.brand-mark{width:32px;height:32px;border-radius:9px;background:var(--brand-700);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:17px;letter-spacing:.5px;flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:-.2px;color:var(--text-1)}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.06em}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-menu a{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);padding:8px 10px;min-height:44px;
  display:inline-flex;align-items:center;white-space:nowrap;border-radius:8px;
}
.nav-menu a::after{content:"";position:absolute;left:10px;right:10px;bottom:4px;height:2px;background:transparent;transition:background var(--t) var(--ease)}
.nav-menu a:hover{color:var(--brand-700)}
.nav-menu a:hover::after{background:var(--accent)}
.nav-menu a.is-active{color:var(--brand-500);font-weight:600}
.nav-menu a.is-active::after{background:var(--brand-500)}
.nav-search{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-input);
  padding:0 12px;height:40px;transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease)}
.nav-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(20,112,143,.12)}
.nav-search i{color:var(--text-3);font-size:13px}
.nav-search input{border:0;outline:none;background:transparent;font-size:14px;width:150px;color:var(--text-1);height:100%}
.nav-search input::placeholder{color:var(--text-3)}
.nav-cta{white-space:nowrap}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:10px;color:var(--brand-700);font-size:18px;align-items:center;justify-content:center}

/* ---------- 页头区 ---------- */
.page-head{background:var(--surface-2);padding:44px 0 0;border-bottom:1px solid var(--line)}
.crumb{font-size:13px;color:var(--text-3);letter-spacing:.02em;margin-bottom:16px;display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--brand-500)}
.crumb .sep{color:var(--line-dash)}
.crumb .now{color:var(--brand-500)}
.head-grid{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;padding-bottom:36px}
.head-grid h1{font-size:44px;font-weight:700;letter-spacing:-.5px;line-height:1.25;margin-bottom:14px}
.head-grid .lead{font-size:17px;color:var(--text-2);max-width:520px}
.head-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.badge-pill{display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;
  background:rgba(14,76,99,.08);color:var(--brand-700);font-size:13px;line-height:1.5;font-weight:500}
.badge-lime{background:rgba(184,220,85,.28);color:#41510c}
.head-visual{border-radius:var(--radius-img);overflow:hidden;box-shadow:var(--shadow-card);background:#fff}
.head-visual img{width:100%;aspect-ratio:4/3;object-fit:cover}
.anchor-bar{display:flex;gap:10px;flex-wrap:wrap;padding:0 0 24px}
.anchor-bar a{padding:7px 16px;border-radius:999px;font-size:14px;font-weight:500;background:#fff;border:1px solid var(--line);color:var(--text-2);transition:all var(--t) var(--ease)}
.anchor-bar a:hover{background:var(--brand-500);border-color:var(--brand-500);color:#fff}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0}
.section-sm{padding:64px 0}
.section h2{font-size:30px;font-weight:650;letter-spacing:-.3px;position:relative;padding-bottom:16px;margin-bottom:16px}
.section h2::after{content:"";position:absolute;left:0;bottom:0;width:48px;height:4px;background:var(--brand-500);border-radius:2px}
.section .sub{font-size:16px;color:var(--text-2);max-width:720px;margin-bottom:36px}
.band{background:var(--surface-2)}

/* ---------- 主体 8:4 栅格 ---------- */
.main-grid{display:grid;grid-template-columns:8fr 4fr;gap:32px;align-items:start}
.point-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-card);transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);height:100%}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:rgba(20,112,143,.25)}
.card .thumb{overflow:hidden;background:var(--surface-2)}
.card .thumb img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform 220ms var(--ease)}
.card:hover .thumb img{transform:scale(1.03)}
.card-body{padding:20px 22px 22px}
.card-body .badge-pill{margin-bottom:12px}
.card-body h3{font-size:20px;font-weight:600;line-height:1.4;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:15px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:16px;padding-top:14px;border-top:1px dashed var(--line-dash);
  font-size:13px;color:var(--text-3);letter-spacing:.02em;display:flex;justify-content:space-between;gap:12px}
.card-meta a{font-weight:600}

/* ---------- 侧栏 ---------- */
.side{position:sticky;top:calc(var(--nav-h) + 24px);display:flex;flex-direction:column;gap:24px}
.side-box{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-card)}
.side-box h3{font-size:17px;font-weight:600;margin-bottom:14px}
.side-nav a{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--text-2);padding:11px 10px;border-radius:9px;min-height:44px;border-left:3px solid transparent;transition:all var(--t) var(--ease)}
.side-nav a:hover{background:var(--surface-2);color:var(--brand-700);border-left-color:var(--accent)}
.side-nav i{color:var(--brand-500);font-size:13px;width:16px;text-align:center}
.side-cta{background:var(--brand-900);border-color:var(--brand-900)}
.side-cta h3{color:#fff}
.side-cta p{font-size:14px;color:rgba(232,241,244,.78);margin-bottom:16px}
.side-form{display:flex;flex-direction:column;gap:10px}
.side-form input{height:46px;border-radius:var(--radius-input);border:1px solid transparent;padding:0 14px;font-size:14px;color:var(--text-1);outline:none;background:#fff}
.side-form input:focus{box-shadow:0 0 0 3px rgba(184,220,85,.35)}
.side-form .btn{width:100%}
.side-note{font-size:12px;color:rgba(232,241,244,.6);margin-top:10px}

/* ---------- 流程时间线 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);margin-top:8px}
.flow-item{padding:28px 24px 28px 0;border-right:1px dashed var(--line-dash)}
.flow-item:last-child{border-right:0}
.flow-num{font-size:32px;font-weight:700;color:var(--brand-500);line-height:1;font-variant-numeric:tabular-nums;margin-bottom:14px;display:block}
.flow-item h3{font-size:18px;font-weight:600;margin-bottom:10px}
.flow-item p{font-size:15px;color:var(--text-2)}

/* ---------- 场景 2x2 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.scene{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-card);transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease)}
.scene:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover)}
.scene .tag{font-size:13px;color:var(--brand-500);font-weight:600;letter-spacing:.04em;display:block;margin-bottom:10px}
.scene h3{font-size:17px;font-weight:600;margin-bottom:8px}
.scene p{font-size:15px}

/* ---------- 要点清单 ---------- */
.check-list li{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-bottom:1px dashed var(--line-dash);font-size:15px;color:var(--text-2)}
.check-list li:last-child{border-bottom:0}
.check-list i{color:var(--ok);margin-top:6px;font-size:14px}

/* ---------- 数据条 ---------- */
.stat-band{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 28px;display:grid;grid-template-columns:1fr 1fr 1fr;gap:24px;box-shadow:var(--shadow-card)}
.stat-band .stat strong{display:block;font-size:32px;font-weight:700;color:var(--brand-500);line-height:1.1;font-variant-numeric:tabular-nums}
.stat-band .stat strong span{font-size:15px;font-weight:600;margin-left:4px;color:var(--text-3)}
.stat-band .stat p{font-size:14px;color:var(--text-2);margin-top:6px}

/* ---------- FAQ ---------- */
.faq-list .accordion-item{border:0;border-top:1px solid var(--line);background:transparent;border-radius:0}
.faq-list .accordion-item:last-child{border-bottom:1px solid var(--line)}
.faq-list .accordion-button{background:transparent;border-radius:0;box-shadow:none;font-size:17px;font-weight:600;color:var(--text-1);padding:20px 44px 20px 0;line-height:1.5}
.faq-list .accordion-button:not(.collapsed){color:var(--brand-700);box-shadow:inset 3px 0 0 var(--brand-500);padding-left:16px;background:transparent}
.faq-list .accordion-button::after{content:"+";background-image:none;font-size:22px;font-weight:400;color:var(--brand-500);
  width:28px;height:28px;display:flex;align-items:center;justify-content:center;transform:none;transition:transform var(--t) var(--ease);right:6px}
.faq-list .accordion-button:not(.collapsed)::after{content:"+";transform:rotate(135deg)}
.faq-list .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand-500);outline-offset:-2px}
.faq-list .accordion-body{padding:0 0 24px 0;font-size:15px;line-height:1.8;color:var(--text-2)}
.faq-list .accordion-button:not(.collapsed) + .accordion-collapse .accordion-body,
.faq-list .accordion-collapse.show .accordion-body{padding-left:16px;padding-top:12px}

/* ---------- CTA 深色带 ---------- */
.cta-band{background:var(--brand-900);border-radius:var(--radius-block);padding:56px 48px;display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.png');background-size:cover;background-position:center;opacity:.16}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{color:#fff;font-size:30px;font-weight:650;margin-bottom:12px}
.cta-band h2::after{display:none}
.cta-band p{color:rgba(232,241,244,.8);font-size:16px;margin-bottom:22px}
.cta-links{display:flex;flex-wrap:wrap;gap:12px}
.cta-links .btn-outline{color:#fff;border-color:rgba(255,255,255,.55)}
.cta-links .btn-outline:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.cta-form{background:rgba(255,255,255,.06);border:1px solid rgba(232,241,244,.18);border-radius:var(--radius-card);padding:24px}
.cta-form label{font-size:14px;color:rgba(232,241,244,.82);display:block;margin-bottom:10px}
.cta-row{display:flex;gap:10px}
.cta-row input{flex:1;height:48px;border-radius:var(--radius-input);border:1px solid transparent;padding:0 14px;font-size:15px;background:#fff;color:var(--text-1);outline:none}
.cta-row input:focus{box-shadow:0 0 0 3px rgba(20,112,143,.35)}
.cta-tip{font-size:13px;color:rgba(232,241,244,.6);margin-top:12px;display:flex;gap:8px;align-items:flex-start}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(232,241,244,.72);padding:72px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:32px;padding-bottom:44px}
.site-footer h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:16px}
.site-footer .brand-text strong{color:#fff}
.site-footer .brand-text em{color:rgba(232,241,244,.6)}
.site-footer .brand-mark{background:var(--brand-500)}
.footer-brand p{font-size:14px;margin-top:16px;max-width:280px}
.footer-contact{margin-top:16px;display:flex;flex-direction:column;gap:6px;font-size:14px}
.socials{display:flex;gap:10px;margin-top:18px}
.socials a{width:38px;height:38px;border-radius:50%;border:1px solid rgba(232,241,244,.24);display:inline-flex;align-items:center;justify-content:center;color:var(--text-inv);transition:all var(--t) var(--ease)}
.socials a:hover{background:var(--brand-500);border-color:var(--brand-500);color:#fff}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:rgba(232,241,244,.72);font-size:14px}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-form{display:flex;gap:8px;margin-top:14px}
.footer-form input{flex:1;height:44px;border-radius:var(--radius-input);border:1px solid rgba(232,241,244,.24);background:#fff;padding:0 12px;font-size:14px;outline:none;color:var(--text-1)}
.footer-form input:focus{box-shadow:0 0 0 3px rgba(20,112,143,.4)}
.footer-form button{height:44px;padding:0 18px;border-radius:var(--radius-btn);border:0;background:var(--accent);color:#fff;font-size:15px;font-weight:600;cursor:pointer;transition:background var(--t) var(--ease)}
.footer-form button:hover{background:#d8451f}
.footer-bottom{border-top:1px solid rgba(232,241,244,.14);padding:20px 0 28px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(232,241,244,.6)}
.to-top{color:rgba(232,241,244,.72);display:inline-flex;align-items:center;gap:8px}
.to-top:hover{color:#fff}
.to-top i{transition:transform var(--t) var(--ease)}
.to-top:hover i{transform:translateY(-4px)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{max-width:960px}
  .head-grid{grid-template-columns:1fr 1fr;gap:32px}
  .head-grid h1{font-size:38px}
  .main-grid{grid-template-columns:1fr;gap:40px}
  .side{position:static;flex-direction:row;flex-wrap:wrap}
  .side-box{flex:1 1 300px}
  .flow{grid-template-columns:repeat(2,1fr)}
  .flow-item{padding:24px 24px 24px 0}
  .flow-item:nth-child(2){border-right:0}
  .cta-band{grid-template-columns:1fr;padding:44px 32px}
}
@media (max-width:991px){
  .nav-menu{position:fixed;inset:var(--nav-h) 0 0 auto;width:min(340px,86vw);background:#fff;
    flex-direction:column;align-items:stretch;gap:0;padding:16px 20px 28px;box-shadow:-12px 0 32px rgba(15,30,38,.14);
    transform:translateX(102%);transition:transform 220ms var(--ease);overflow-y:auto}
  .nav-menu.is-open{transform:translateX(0)}
  .nav-menu a{font-size:17px;padding:14px 4px;border-bottom:1px solid var(--line);border-radius:0}
  .nav-menu a::after{display:none}
  .nav-menu a.is-active{color:var(--brand-500)}
  .nav-search{display:none}
  .nav-toggle{display:inline-flex}
  .nav-left{border-right:0;padding-right:0;gap:12px}
  .brand-text em{display:none}
  .section{padding:72px 0}
  .head-grid h1{font-size:32px}
  .scene-grid{grid-template-columns:1fr}
  .stat-band{grid-template-columns:1fr;gap:18px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  body{font-size:15px;line-height:1.78}
  .section{padding:56px 0}
  .section-sm{padding:48px 0}
  .section h2,.cta-band h2{font-size:24px}
  .head-grid{grid-template-columns:1fr;gap:24px;padding-bottom:28px}
  .head-grid h1{font-size:28px;line-height:1.35}
  .head-grid .lead{font-size:15px}
  .point-grid{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .flow-item{border-right:0;border-bottom:1px dashed var(--line-dash);padding:20px 0}
  .flow-item:last-child{border-bottom:0}
  .cta-band{padding:32px 22px;border-radius:18px}
  .cta-row{flex-direction:column}
  .cta-row .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .site-footer{margin-top:56px;padding-top:48px}
  .footer-form{flex-direction:column}
  .footer-form button{width:100%}
  .card-body h3{font-size:18px}
  .side{flex-direction:column}
}

/* roulang page: category2 */
:root{
  --brand-900:#0E4C63;
  --brand-700:#14708F;
  --brand-500:#1B8CB0;
  --accent:#F4572E;
  --accent-dark:#D8431E;
  --lime:#B8DC55;
  --bg:#F6F8F9;
  --surface:#FFFFFF;
  --surface-2:#EDF2F4;
  --dark:#0B2B36;
  --line:#E4EAED;
  --line-dash:#D8E1E6;
  --text-1:#0F1E26;
  --text-2:#4A5B66;
  --text-3:#7A8B95;
  --invert:#E8F1F4;
  --ok:#1E9E6A;
  --warn:#D9822B;
  --err:#C0392B;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-lg:24px;
  --shadow-1:0 1px 2px rgba(15,30,38,.06),0 8px 24px rgba(15,30,38,.06);
  --shadow-2:0 12px 32px rgba(15,30,38,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--text-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease);}
a:hover{color:var(--accent);}
h1,h2,h3,h4{color:var(--text-1);margin:0;font-weight:700;letter-spacing:-.2px;}
p{margin:0 0 20px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0 0 20px;padding-left:24px;}
li{margin-bottom:10px;}
li:last-child{margin-bottom:0;}
button,input{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px;border-radius:4px;}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand-900);color:#fff;padding:10px 16px;z-index:2000;border-radius:0 0 8px 0;}
.skip-link:focus{left:0;color:#fff;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid transparent;
  transition:box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.site-header.is-scrolled{
  background:#fff;
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px rgba(15,30,38,.07);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  min-height:64px;gap:20px;
}
.nav-left{display:flex;align-items:center;gap:26px;min-width:0;}
.nav-right{display:flex;align-items:center;gap:14px;padding-left:20px;border-left:1px solid var(--line);}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:32px;height:32px;border-radius:9px;
  background:var(--brand-900);color:#fff;
  display:grid;place-items:center;
  font-weight:700;font-size:17px;letter-spacing:0;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.14);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;color:var(--text-1);font-weight:700;letter-spacing:.2px;}
.brand-text em{font-style:normal;font-size:12px;color:var(--text-3);letter-spacing:.06em;}
.nav-menu{display:flex;align-items:center;gap:8px;}
.nav-menu a{
  position:relative;
  font-size:15px;font-weight:500;color:var(--text-2);
  padding:8px 12px;border-radius:8px;
  white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease);
  border-radius:2px;
}
.nav-menu a:hover{color:var(--brand-700);background:rgba(20,112,143,.06);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.is-active{color:var(--brand-700);font-weight:600;}
.nav-menu a.is-active::after{transform:scaleX(1);background:var(--brand-700);}
.nav-search{
  display:flex;align-items:center;gap:8px;
  background:var(--surface-2);border:1px solid var(--line);
  border-radius:999px;padding:7px 14px;
  transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.nav-search i{color:var(--text-3);font-size:13px;}
.nav-search input{
  border:0;background:transparent;outline:none;
  width:150px;font-size:14px;color:var(--text-1);
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search:focus-within{border-color:var(--brand-700);background:#fff;box-shadow:0 0 0 3px rgba(20,112,143,.12);}
.btn-primary,.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand-700);border:1px solid var(--brand-700);color:#fff;
  font-size:15px;font-weight:600;padding:11px 20px;border-radius:var(--radius-btn);
  min-height:44px;
  transition:background-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn-primary:hover,.nav-cta:hover{background:var(--brand-900);border-color:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-1);}
.btn-primary:active,.nav-cta:active{transform:translateY(0);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--brand-900);
  border:1.5px solid var(--brand-900);
  font-size:15px;font-weight:600;padding:11px 20px;border-radius:var(--radius-btn);
  min-height:44px;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn-ghost:hover{background:rgba(20,112,143,.08);color:var(--brand-900);transform:translateY(-1px);}
.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--accent);border:1px solid var(--accent);color:#fff;
  font-size:15px;font-weight:600;padding:12px 24px;border-radius:var(--radius-btn);
  min-height:46px;
  transition:background-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn-accent:hover{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(244,87,46,.24);}
.nav-toggle{
  display:none;background:transparent;border:1px solid var(--line);
  width:44px;height:44px;border-radius:10px;color:var(--brand-900);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{background:var(--surface-2);}

/* ============ 页头区 ============ */
.page-head{
  background:var(--surface-2);
  border-bottom:1px solid var(--line);
  padding:34px 0 40px;
}
.crumbs{font-size:13px;color:var(--text-3);letter-spacing:.02em;margin-bottom:20px;display:flex;flex-wrap:wrap;gap:6px;align-items:center;}
.crumbs a{color:var(--text-3);}
.crumbs a:hover{color:var(--accent);}
.crumbs .sep{color:var(--line-dash);}
.crumbs .current{color:var(--brand-700);font-weight:600;}
.page-head-grid{
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.04em;
  color:var(--brand-900);background:rgba(20,112,143,.10);
  padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
.page-head h1{
  font-size:44px;line-height:1.25;letter-spacing:-.5px;margin-bottom:16px;
}
.h1-sub{display:block;font-size:22px;font-weight:600;color:var(--brand-700);letter-spacing:0;margin-top:12px;}
.lede{font-size:17px;color:var(--text-2);max-width:560px;}
.page-head-media{
  margin:0;border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-1);
  aspect-ratio:4/3;
}
.page-head-media img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease);}
.page-head-media:hover img{transform:scale(1.03);}
.anchor-tabs{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:34px;
}
.anchor-tabs a{
  font-size:14px;font-weight:500;color:var(--brand-900);
  background:#fff;border:1px solid var(--line);
  padding:9px 18px;border-radius:999px;
  transition:all var(--dur) var(--ease);
}
.anchor-tabs a:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:left;}
.section h2{
  font-size:30px;line-height:1.3;font-weight:650;letter-spacing:-.3px;
}
.section h2::after{
  content:"";display:block;width:48px;height:4px;border-radius:2px;
  background:var(--brand-500);margin-top:14px;
}
.section-head p{margin-top:18px;font-size:16px;color:var(--text-2);}
h3{font-size:20px;font-weight:600;line-height:1.4;}
h4{font-size:17px;font-weight:600;line-height:1.5;}

/* ============ 图文交替 ============ */
.split{
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:56px;align-items:center;
}
.split.reverse{grid-template-columns:minmax(0,5fr) minmax(0,7fr);}
.split-copy .num{
  display:inline-block;font-size:32px;font-weight:700;color:var(--brand-500);
  font-variant-numeric:tabular-nums;letter-spacing:-1px;margin-bottom:8px;
}
.split-copy h2{margin-bottom:20px;}
.split-media{
  margin:0;border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-1);
  aspect-ratio:4/3;
}
.split-media img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease);}
.split-media:hover img{transform:scale(1.03);}
.check-mini{list-style:none;padding-left:0;margin-top:8px;}
.check-mini li{
  position:relative;padding-left:26px;font-size:16px;color:var(--text-2);
}
.check-mini li::before{
  content:"";position:absolute;left:0;top:11px;
  width:8px;height:8px;border-radius:2px;background:var(--lime);
}
.steps{list-style:none;counter-reset:step;padding-left:0;margin-top:8px;}
.steps li{
  counter-increment:step;position:relative;
  padding-left:52px;padding-bottom:18px;margin-bottom:0;
  border-left:1px dashed var(--line-dash);
  margin-left:15px;
}
.steps li:last-child{border-left-color:transparent;padding-bottom:0;}
.steps li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;left:-15px;top:-2px;
  width:30px;height:30px;border-radius:50%;
  background:#fff;border:1.5px solid var(--brand-700);color:var(--brand-900);
  display:grid;place-items:center;
  font-size:12px;font-weight:700;font-variant-numeric:tabular-nums;
}
.steps strong{display:block;color:var(--text-1);font-size:16px;font-weight:600;}

/* ============ 参数表 ============ */
.spec-wrap{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;
}
table.spec{width:100%;border-collapse:collapse;font-size:15px;}
table.spec caption{
  caption-side:top;text-align:left;padding:22px 26px 4px;
  font-size:14px;color:var(--text-3);letter-spacing:.02em;
}
table.spec th,table.spec td{
  border-bottom:1px solid var(--line);
  padding:16px 26px;text-align:left;vertical-align:top;
}
table.spec thead th{
  background:var(--surface-2);color:var(--text-1);font-weight:600;font-size:14px;letter-spacing:.03em;
}
table.spec tbody tr:last-child th,table.spec tbody tr:last-child td{border-bottom:0;}
table.spec tbody th{
  width:34%;color:var(--text-1);font-weight:600;background:#fff;
}
table.spec tbody tr:nth-child(even) td{background:#FBFCFD;}
.spec-note{margin-top:16px;font-size:13px;color:var(--text-3);}

/* ============ 信息卡组 ============ */
.info-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.info-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(20,112,143,.25);}
.info-card .tag{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.02em;
  color:var(--brand-900);background:rgba(20,112,143,.10);
  padding:4px 12px;border-radius:999px;margin-bottom:14px;
}
.info-card h3{font-size:16px;margin-bottom:10px;}
.info-card p{font-size:15px;line-height:1.75;color:var(--text-2);}
.info-card .icon{
  width:40px;height:40px;border-radius:10px;background:var(--surface-2);
  color:var(--brand-700);display:grid;place-items:center;font-size:16px;margin-bottom:16px;
}

/* ============ 清单 ============ */
.check-list{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 28px;}
.check-list li{
  position:relative;padding-left:34px;font-size:16px;color:var(--text-2);
  background:var(--surface);border:1px solid var(--line);border-radius:10px;
  padding-top:12px;padding-bottom:12px;padding-right:16px;margin:0;
}
.check-list li i{
  position:absolute;left:14px;top:16px;color:var(--ok);font-size:13px;
}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);}
.faq-list .accordion-item{
  border:0;border-bottom:1px solid var(--line);background:transparent;
  border-left:3px solid transparent;
  transition:border-color var(--dur) var(--ease);
}
.faq-list .accordion-item:has(.accordion-button:not(.collapsed)){border-left-color:var(--brand-500);}
.faq-list .accordion-button{
  background:transparent;border:0;box-shadow:none;
  font-size:17px;font-weight:600;color:var(--text-1);
  padding:22px 44px 22px 18px;border-radius:0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  transition:color var(--dur) var(--ease);
}
.faq-list .accordion-button:hover{color:var(--brand-700);}
.faq-list .accordion-button:focus{box-shadow:none;}
.faq-list .accordion-button::after{
  content:"+";background-image:none;font-size:22px;font-weight:400;
  color:var(--brand-700);width:auto;height:auto;line-height:1;flex:0 0 auto;
  transform:none;transition:transform var(--dur) var(--ease);
}
.faq-list .accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.faq-list .accordion-button:not(.collapsed){color:var(--brand-900);}
.faq-list .accordion-body{
  font-size:15px;line-height:1.8;color:var(--text-2);
  padding:0 48px 24px 18px;
}

/* ============ CTA 带 ============ */
.cta-band{
  background:var(--dark);border-radius:var(--radius-lg);
  padding:64px;color:var(--invert);
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;align-items:center;
}
.cta-band h2{color:#fff;font-size:30px;line-height:1.3;}
.cta-band h2::after{background:var(--accent);}
.cta-band p{color:rgba(232,241,244,.78);margin-top:18px;font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-band .btn-ghost{color:#fff;border-color:rgba(232,241,244,.55);}
.cta-band .btn-ghost:hover{background:rgba(232,241,244,.12);color:#fff;}
.related-links{
  margin-top:26px;padding-top:22px;border-top:1px solid rgba(232,241,244,.16);
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;
  font-size:14px;color:rgba(232,241,244,.68);
}
.related-links a{
  color:var(--invert);background:rgba(232,241,244,.10);
  border:1px solid rgba(232,241,244,.24);border-radius:999px;
  padding:7px 16px;font-size:14px;
}
.related-links a:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:var(--invert);padding:72px 0 0;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1.2fr);gap:40px;}
.site-footer .brand-text strong{color:#fff;}
.site-footer .brand-text em{color:rgba(232,241,244,.6);}
.site-footer .brand-mark{background:var(--brand-700);}
.footer-brand p{margin:18px 0 16px;font-size:14px;color:rgba(232,241,244,.72);max-width:280px;}
.footer-contact{display:flex;flex-direction:column;gap:6px;font-size:14px;color:rgba(232,241,244,.72);}
.socials{display:flex;gap:10px;margin-top:18px;}
.socials a{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  background:rgba(232,241,244,.10);color:var(--invert);font-size:14px;
}
.socials a:hover{background:var(--brand-700);color:#fff;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(232,241,244,.72);}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-form{display:flex;gap:10px;margin-top:16px;}
.footer-form input{
  flex:1 1 auto;min-width:0;height:48px;border-radius:var(--radius-btn);
  border:1px solid transparent;background:#fff;color:var(--text-1);
  padding:0 14px;outline:none;font-size:14px;
}
.footer-form input:focus{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(27,140,176,.24);}
.footer-form button{
  flex:0 0 auto;height:48px;padding:0 20px;border:0;border-radius:var(--radius-btn);
  background:var(--accent);color:#fff;font-size:14px;font-weight:600;cursor:pointer;
  transition:background-color var(--dur) var(--ease);
}
.footer-form button:hover{background:var(--accent-dark);}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(232,241,244,.14);
  padding:22px 0 28px;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(232,241,244,.6);
}
.to-top{display:inline-flex;align-items:center;gap:8px;color:var(--invert);font-size:13px;}
.to-top:hover{color:#fff;text-decoration:underline;}
.to-top i{font-size:12px;transition:transform var(--dur) var(--ease);}
.to-top:hover i{transform:translateY(-4px);}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .container{max-width:960px;}
  .page-head h1{font-size:38px;}
  .cta-band{padding:52px;}
}
@media (max-width:991.98px){
  .nav-right{border-left:0;padding-left:0;}
  .nav-search{display:none;}
  .nav-menu{
    position:fixed;top:0;right:0;z-index:1200;
    width:min(320px,86vw);height:100vh;
    background:#fff;border-left:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:4px;
    padding:88px 22px 32px;
    transform:translateX(105%);
    transition:transform 260ms var(--ease);
    box-shadow:-16px 0 40px rgba(15,30,38,.12);
    overflow-y:auto;
  }
  .nav-menu.is-open{transform:translateX(0);}
  .nav-menu a{font-size:17px;padding:14px 12px;}
  .nav-menu a::after{left:12px;right:12px;bottom:8px;}
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .page-head-grid{grid-template-columns:1fr;gap:32px;}
  .page-head-media{max-width:520px;}
  .split,.split.reverse{grid-template-columns:1fr;gap:32px;}
  .split.reverse .split-media{order:-1;}
  .section{padding:72px 0;}
  .cta-band{grid-template-columns:1fr;gap:32px;padding:44px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .page-head h1{font-size:30px;}
  .h1-sub{font-size:17px;}
  .section h2{font-size:24px;}
  .section{padding:56px 0;}
  .info-grid{grid-template-columns:1fr;}
  .check-list{grid-template-columns:1fr;}
  .anchor-tabs{
    flex-wrap:nowrap;overflow-x:auto;padding-bottom:6px;
    -webkit-overflow-scrolling:touch;scrollbar-width:thin;
  }
  .anchor-tabs a{flex:0 0 auto;}
  table.spec{tables-layout:fixed;}
  table.spec th,table.spec td{padding:14px 16px;font-size:14px;}
  table.spec tbody th{width:40%;}
  .cta-band{padding:32px 22px;border-radius:18px;}
  .cta-actions .btn-accent,.cta-actions .btn-ghost{width:100%;}
  .footer-form{flex-direction:column;}
  .footer-form button{width:100%;}
}
@media (max-width:575.98px){
  body{font-size:15px;line-height:1.75;}
  .container{padding:0 16px;}
  .page-head h1{font-size:26px;}
  .page-head-media{aspect-ratio:16/9;}
  .split-media{aspect-ratio:16/9;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}