/* roulang page: index */
:root{
  --brand-900:#0A2A63; --brand-600:#1B56C4; --brand-400:#2E6BE6;
  --brand-100:#E8F0FE; --brand-50:#F3F7FF;
  --cloud-400:#14A3B0; --cloud-600:#0E7C86; --cloud-50:#E1F5F7;
  --accent-500:#F97316; --accent-700:#C2410C; --accent-50:#FFEDE3;
  --ink-900:#0F1B2D; --ink-700:#2B3A4F; --ink-500:#5A6B82; --ink-300:#93A1B5;
  --line:#E4EAF3; --line-strong:#D7E1F0; --surface:#F6F8FC; --card:#FFFFFF;
  --r-8:8px; --r-12:12px; --r-16:16px; --r-20:20px; --r-full:999px;
  --sh-1:0 1px 2px rgba(15,27,45,.05);
  --sh-2:0 6px 16px -4px rgba(15,27,45,.08);
  --sh-3:0 16px 40px -12px rgba(15,27,45,.16);
  --sh-brand:0 8px 20px -6px rgba(27,86,196,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px; line-height:1.85; color:var(--ink-700);
  background-color:var(--surface);
  background-image:radial-gradient(rgba(27,86,196,.05) 1px, transparent 1px);
  background-size:22px 22px;
  padding-bottom:72px;
  font-variant-numeric:tabular-nums;
}
@media (min-width:768px){ body{padding-bottom:0;} }
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
h1,h2,h3,h4{color:var(--ink-900);font-weight:700;line-height:1.28;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-900);}
img{max-width:100%;display:block;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
ul{list-style:none;padding:0;}
::selection{background:rgba(46,107,230,.18);color:var(--ink-900);}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(46,107,230,.28);border-radius:8px;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#EEF3FB;}
::-webkit-scrollbar-thumb{background:#C6D5EA;border-radius:999px;border:2px solid #EEF3FB;}
::-webkit-scrollbar-thumb:hover{background:#A9BFDD;}

.wrap{max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){ .wrap{padding:0 32px;} }

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;height:68px;
  background:rgba(255,255,255,.9);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.header-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink-900);}
.logo:hover{color:var(--ink-900);}
.logo-mark{
  width:28px;height:28px;flex:0 0 28px;border-radius:999px;
  background:var(--brand-100);display:flex;align-items:center;justify-content:center;
}
.logo-mark svg{width:20px;height:20px;}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-text strong{font-size:19px;font-weight:700;letter-spacing:.01em;}
.logo-text em{
  font-style:normal;font-size:11px;letter-spacing:.04em;color:var(--ink-500);margin-top:2px;
}
@media (max-width:1023px){ .logo-text em{display:none;} }
.main-nav{display:none;align-items:center;gap:32px;}
@media (min-width:1024px){ .main-nav{display:flex;} }
.nav-link{
  position:relative;font-size:15px;color:var(--ink-700);padding:8px 2px;line-height:1;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-14px;height:2px;
  background:var(--brand-600);border-radius:2px;transform:scaleX(0);transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--brand-600);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-600);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:20px;}
.text-entry{font-size:15px;color:var(--ink-700);display:none;}
.text-entry:hover{color:var(--brand-600);}
@media (min-width:1024px){ .text-entry{display:inline-flex;} }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border:1px solid transparent;border-radius:var(--r-full);
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:all .2s var(--ease);
}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--sh-brand);}
.btn-primary:hover{background:var(--brand-900);color:#fff;box-shadow:0 10px 24px -8px rgba(10,42,99,.55);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 10px -6px rgba(10,42,99,.5);}
.btn-ghost{background:#fff;border-color:var(--line-strong);color:var(--ink-700);}
.btn-ghost:hover{border-color:var(--brand-400);background:var(--brand-50);color:var(--brand-600);}
.btn-ghost:active{transform:translateY(1px);}
.btn-block{width:100%;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-600);}
.link-more i{transition:transform .2s var(--ease);}
.link-more:hover i{transform:translateX(3px);}

/* ---------- Badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-full);
  font-size:12px;font-weight:600;letter-spacing:.02em;line-height:1.5;
}
.badge-brand{background:var(--brand-100);color:var(--brand-600);}
.badge-cloud{background:var(--cloud-50);color:var(--cloud-600);}
.badge-accent{background:var(--accent-50);color:var(--accent-700);}

/* ---------- Section ---------- */
.section{padding:56px 0;}
@media (min-width:1024px){ .section{padding:96px 0;} }
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{font-size:22px;}
@media (min-width:1024px){ .section-head h2{font-size:28px;} }
.section-head p{margin-top:14px;font-size:16px;color:var(--ink-500);}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:48px 0 40px;}
.hero::after{
  content:"";position:absolute;right:-120px;top:-140px;width:520px;height:520px;border-radius:999px;
  background:radial-gradient(circle, rgba(27,86,196,.10), rgba(27,86,196,0) 68%);
  pointer-events:none;
}
.hero-grid{display:grid;gap:44px;align-items:center;}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:7fr 5fr;gap:64px;}
  .hero{padding:72px 0 56px;}
}
.hero h1{font-size:26px;line-height:1.3;margin-top:18px;}
@media (min-width:1024px){ .hero h1{font-size:36px;line-height:1.2;} }
.hero-sub{margin-top:18px;font-size:17px;line-height:1.85;color:var(--ink-500);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:30px;
  font-size:14px;color:var(--ink-500);
}
.hero-meta span{display:inline-flex;align-items:center;gap:7px;}
.hero-meta i{color:var(--brand-600);font-size:14px;}
.hero-meta .divider{width:1px;height:14px;background:var(--line-strong);padding:0;}

.hero-visual{position:relative;}
.hero-frame{
  position:relative;border-radius:var(--r-20);overflow:hidden;box-shadow:var(--sh-3);
  background:linear-gradient(140deg,#EFF5FF,#FFFFFF);
}
.hero-frame img{width:100%;height:300px;object-fit:cover;}
@media (min-width:1024px){ .hero-frame img{height:400px;} }
.panel-mock{
  position:absolute;right:18px;top:18px;width:168px;padding:14px;
  background:rgba(255,255,255,.96);border-radius:var(--r-12);box-shadow:var(--sh-2);
}
.panel-mock .dots{display:flex;gap:5px;margin-bottom:12px;}
.panel-mock .dots i{width:7px;height:7px;border-radius:999px;background:var(--line-strong);display:block;}
.panel-mock .bar{height:9px;border-radius:999px;background:var(--brand-100);margin-bottom:9px;}
.panel-mock .bar.short{width:62%;}
.panel-mock .btn-mock{height:24px;border-radius:8px;background:var(--brand-600);margin-top:14px;}
.hero-curve{
  height:34px;margin-top:8px;
  background:radial-gradient(120% 100% at 50% 0, rgba(27,86,196,.06), transparent 70%);
  border-radius:50% 50% 0 0/100% 100% 0 0;
}

/* ---------- Timeline ---------- */
.timeline{position:relative;max-width:880px;margin:0 auto;padding-left:38px;}
@media (min-width:768px){ .timeline{padding-left:44px;} }
.timeline::before{
  content:"";position:absolute;left:15px;top:10px;bottom:10px;width:2px;
  background-image:linear-gradient(to bottom, var(--brand-200,#D7E1F0) 55%, transparent 0);
  background-size:2px 14px;background-repeat:repeat-y;
}
.tl-node{position:relative;margin-bottom:28px;}
.tl-node:last-child{margin-bottom:0;}
.tl-dot{
  position:absolute;left:-38px;top:20px;width:32px;height:32px;border-radius:999px;
  background:#fff;border:2px solid var(--brand-400);
  display:flex;align-items:center;justify-content:center;
}
@media (min-width:768px){ .tl-dot{left:-44px;} }
.tl-dot span{width:10px;height:10px;border-radius:999px;background:var(--brand-600);display:block;}
.tl-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-16);
  padding:18px;transition:all .2s var(--ease);
}
@media (min-width:768px){ .tl-card{padding:24px;} }
.tl-card:hover{box-shadow:var(--sh-2);border-color:var(--brand-200,#D7E1F0);}
.tl-card h3{font-size:18px;font-weight:600;margin-top:12px;}
.tl-card p{margin-top:8px;font-size:15px;color:var(--ink-500);}

/* ---------- Cards ---------- */
.card{
  background:var(--card);border:1px solid #E9EEF6;border-radius:var(--r-16);
  box-shadow:var(--sh-2);transition:all .2s var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:var(--brand-200,#D7E1F0);}
.thumb{
  position:relative;overflow:hidden;border-radius:var(--r-12);
  background:linear-gradient(140deg,#EDF3FE,#F8FBFF);
}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.thumb-16x9{aspect-ratio:16/9;}
.card:hover .thumb img{transform:scale(1.04);}

/* ---------- People ---------- */
.people-grid{display:grid;gap:24px;}
@media (min-width:1024px){ .people-grid{grid-template-columns:5fr 7fr;gap:32px;} }
.people-main{
  position:relative;overflow:hidden;border-radius:var(--r-20);box-shadow:var(--sh-2);
}
.people-main img{width:100%;height:380px;object-fit:cover;}
@media (min-width:1024px){ .people-main img{height:100%;min-height:440px;} }
.people-overlay{
  position:absolute;left:0;right:0;bottom:0;padding:24px;
  background:linear-gradient(to top, rgba(15,27,45,.86), rgba(15,27,45,.15) 62%, transparent);
  color:#fff;
}
.people-overlay strong{display:block;font-size:20px;font-weight:700;color:#fff;}
.people-overlay span{display:block;margin-top:6px;font-size:14px;color:rgba(255,255,255,.78);}
.people-cards{display:grid;gap:20px;grid-template-columns:repeat(2,minmax(0,1fr));}
.person-card{
  background:var(--card);border:1px solid #E9EEF6;border-radius:var(--r-16);
  padding:16px;transition:all .2s var(--ease);
}
.person-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.person-avatar{
  width:100%;aspect-ratio:1/1;border-radius:var(--r-12);overflow:hidden;
  background:var(--brand-100);display:flex;align-items:center;justify-content:center;
  color:var(--brand-600);font-size:26px;font-weight:700;
}
.person-avatar img{width:100%;height:100%;object-fit:cover;}
.person-card strong{display:block;margin-top:14px;font-size:16px;font-weight:600;color:var(--ink-900);}
.person-card span{display:block;margin-top:4px;font-size:13px;color:var(--ink-500);}

/* ---------- Plans ---------- */
.plans{display:grid;gap:24px;}
@media (min-width:1024px){
  .plans{grid-template-columns:repeat(3,minmax(0,1fr));align-items:stretch;gap:28px;}
}
.plan{
  position:relative;display:flex;flex-direction:column;
  background:var(--card);border:1px solid #E9EEF6;border-radius:var(--r-20);
  padding:26px;box-shadow:var(--sh-1);transition:all .2s var(--ease);
}
.plan:hover{transform:translateY(-3px);box-shadow:var(--sh-3);}
.plan h3{font-size:20px;font-weight:600;}
.plan .plan-desc{margin-top:10px;font-size:14px;color:var(--ink-500);min-height:48px;}
.plan .plan-anchor{
  display:flex;align-items:baseline;gap:8px;margin-top:16px;color:var(--brand-600);
  font-weight:700;font-size:22px;
}
.plan .plan-anchor small{font-size:13px;font-weight:400;color:var(--ink-500);}
.plan hr{border:none;border-top:1px solid var(--line);margin:20px 0;}
.plan ul{display:flex;flex-direction:column;gap:12px;}
.plan li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--ink-700);}
.plan li i{font-size:13px;margin-top:7px;flex:0 0 13px;color:var(--brand-600);}
.plan li.off{color:var(--ink-300);text-decoration:line-through;}
.plan li.off i{color:var(--ink-300);}
.plan .plan-foot{margin-top:auto;padding-top:24px;}
.plan-featured{
  border:2px solid var(--brand-600);box-shadow:var(--sh-3);background:#fff;
}
@media (min-width:1024px){ .plan-featured{transform:scale(1.03);} .plan-featured:hover{transform:scale(1.03) translateY(-3px);} }
.plan-flag{
  position:absolute;top:-14px;left:50%;transform:translateX(-50%);
}

/* ---------- CMS list ---------- */
.post-grid{display:grid;gap:24px;}
@media (min-width:768px){ .post-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
@media (min-width:1024px){ .post-grid{grid-template-columns:repeat(3,minmax(0,1fr));} }
.post-card{display:flex;flex-direction:column;padding:18px;cursor:pointer;}
.post-card .thumb{margin-bottom:16px;}
.post-card h3{
  font-size:18px;font-weight:600;line-height:1.45;color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s var(--ease);
}
.post-card:hover h3{color:var(--brand-600);}
.post-card .excerpt{
  margin-top:10px;font-size:14px;color:var(--ink-500);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--ink-500);
}
.post-meta i{color:var(--brand-600);}
.empty-state{
  min-height:280px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:#fff;border:1px dashed var(--line-strong);border-radius:var(--r-16);
  text-align:center;padding:32px;
}
.empty-state i{font-size:48px;color:var(--brand-200,#D7E1F0);}
.empty-state p{font-size:15px;color:var(--ink-500);}

/* ---------- CTA / Form ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--brand-600);
  padding:56px 0;
}
@media (min-width:1024px){ .cta-band{padding:88px 0;} }
.cta-band::after{
  content:"";position:absolute;right:-100px;top:-120px;width:460px;height:460px;border-radius:999px;
  background:radial-gradient(circle, rgba(20,163,176,.35), rgba(20,163,176,0) 70%);
  pointer-events:none;
}
.cta-grid{position:relative;z-index:1;display:grid;gap:40px;}
@media (min-width:1024px){ .cta-grid{grid-template-columns:6fr 6fr;gap:56px;align-items:start;} }
.cta-band h2{color:#fff;font-size:22px;}
@media (min-width:1024px){ .cta-band h2{font-size:28px;} }
.cta-band .cta-lead{margin-top:16px;font-size:16px;line-height:1.9;color:rgba(255,255,255,.82);max-width:520px;}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:14px;}
.cta-points li{display:flex;align-items:flex-start;gap:12px;color:rgba(255,255,255,.92);font-size:15px;}
.cta-points i{color:#fff;font-size:14px;margin-top:7px;}
.form-card{
  background:#fff;border-radius:var(--r-20);box-shadow:var(--sh-3);padding:20px;
}
@media (min-width:768px){ .form-card{padding:28px;} }
.form-card h3{font-size:20px;font-weight:600;}
.form-card .form-note{margin-top:8px;font-size:13px;color:var(--ink-500);}
.field{margin-top:18px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-700);margin-bottom:7px;}
.field label .req{color:var(--accent-500);margin-left:2px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 16px;border:1px solid var(--line-strong);
  border-radius:var(--r-12);background:#fff;color:var(--ink-900);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:auto;min-height:96px;padding:14px 16px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-300);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-400);box-shadow:0 0 0 3px rgba(46,107,230,.18);
}
.field-row{display:grid;gap:0 16px;}
@media (min-width:640px){ .field-row{grid-template-columns:1fr 1fr;} }
.checkline{display:flex;align-items:flex-start;gap:10px;margin-top:20px;font-size:13px;color:var(--ink-500);}
.checkline input{width:18px;height:18px;flex:0 0 18px;margin-top:4px;accent-color:var(--brand-600);}
.form-submit{margin-top:22px;}
.form-tip{
  margin-top:16px;padding:12px 14px;border-radius:var(--r-12);
  background:var(--cloud-50);color:var(--cloud-600);font-size:14px;
}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;gap:16px;max-width:860px;margin:0 auto;}
@media (min-width:1024px){ .faq-grid{grid-template-columns:1fr 1fr;max-width:1100px;gap:18px;} }
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  transition:all .2s var(--ease);overflow:hidden;
}
.faq-item[open]{background:var(--brand-50);border-color:var(--brand-200,#D7E1F0);box-shadow:inset 3px 0 0 var(--brand-600);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .plus{
  flex:0 0 22px;width:22px;height:22px;display:flex;align-items:center;justify-content:center;
  color:var(--brand-600);font-size:15px;transition:transform .2s var(--ease);
}
.faq-item[open] summary .plus{transform:rotate(45deg);}
.faq-item .answer{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--ink-500);}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:56px 0 0;}
@media (min-width:768px){ .site-footer{padding-top:72px;} }
.footer-grid{display:grid;gap:32px;grid-template-columns:repeat(2,minmax(0,1fr));}
@media (min-width:1024px){ .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;} }
.footer-brand .logo{color:#fff;}
.footer-brand .logo-text strong{color:#fff;}
.footer-brand .logo-text em{color:rgba(255,255,255,.6);}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);}
.footer-brand .contact{margin-top:16px;display:flex;flex-direction:column;gap:10px;font-size:14px;}
.footer-brand .contact span{display:inline-flex;align-items:center;gap:9px;}
.footer-brand .contact i{color:var(--brand-400);font-size:13px;}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;letter-spacing:.02em;}
.footer-list{display:flex;flex-direction:column;gap:12px;}
.footer-list a{color:rgba(255,255,255,.72);font-size:14px;}
.footer-list a:hover{color:#fff;}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 24px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}
@media (max-width:767px){ .site-footer{padding-bottom:16px;} }

/* ---------- Mobile tabbar ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:50;display:flex;
  background:#fff;border-top:1px solid var(--line);
  height:calc(58px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
}
@media (min-width:768px){ .tabbar{display:none;} }
.tab-item{
  flex:1 1 0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--ink-500);position:relative;min-width:44px;
}
.tab-item i{font-size:18px;}
.tab-item .tab-icon{
  width:26px;height:22px;display:flex;align-items:center;justify-content:center;border-radius:12px;
  transition:background .2s var(--ease);
}
.tab-item.is-active{color:var(--brand-600);font-weight:600;}
.tab-item.is-active .tab-icon{background:var(--brand-100);}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;width:26px;height:3px;border-radius:0 0 3px 3px;background:var(--brand-600);
}
.tab-item:hover{color:var(--brand-600);}

/* ---------- Misc ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){ .reveal{opacity:1;transform:none;transition:none;} }
.divider-line{height:1px;background:var(--line);border:none;margin:0;}

/* roulang page: article */
:root{
    --brand-900:#0A2A63;
    --brand-700:#143F96;
    --brand-600:#1B56C4;
    --brand-500:#2E6BE6;
    --brand-100:#E8F0FE;
    --brand-50:#F3F7FF;
    --cloud-700:#0E7C86;
    --cloud-500:#14A3B0;
    --cloud-100:#E1F5F7;
    --accent-700:#C2410C;
    --accent-500:#F97316;
    --accent-100:#FFEDE3;
    --ink-900:#0F1B2D;
    --ink-700:#2B3A4F;
    --ink-500:#5A6B82;
    --ink-400:#93A1B5;
    --line:#E4EAF3;
    --surface:#F6F8FC;
    --card:#FFFFFF;
    --shadow-sm:0 1px 2px rgba(15,27,45,.05);
    --shadow-md:0 6px 16px -4px rgba(15,27,45,.08);
    --shadow-lg:0 16px 40px -12px rgba(15,27,45,.16);
    --shadow-brand:0 8px 20px -6px rgba(27,86,196,.45);
    --ease:cubic-bezier(.2,.7,.3,1);
    --r-sm:8px;
    --r-md:12px;
    --r-lg:16px;
    --r-xl:20px;
    --r-full:999px;
  }

  *,*::before,*::after{box-sizing:border-box}

  html{scroll-behavior:smooth}

  body{
    margin:0;
    font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--ink-700);
    background-color:var(--surface);
    background-image:radial-gradient(rgba(27,86,196,.055) 1px, transparent 1px);
    background-size:24px 24px;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }

  img{max-width:100%;display:block}
  a{color:var(--brand-600)}
  button{font-family:inherit}

  ::selection{background:var(--brand-100);color:var(--brand-900)}

  :focus-visible{outline:none;box-shadow:0 0 0 3px rgba(46,107,230,.28);border-radius:var(--r-sm)}

  .wrap{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
  @media (min-width:768px){.wrap{padding-left:32px;padding-right:32px}}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(255,255,255,.9);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
    transition:box-shadow .2s var(--ease);
  }
  .site-header.is-scrolled{box-shadow:var(--shadow-md)}
  .header-inner{display:flex;align-items:center;gap:20px;height:68px}

  .logo{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0}
  .logo-mark{
    width:36px;height:36px;border-radius:var(--r-md);
    background:var(--brand-50);border:1px solid #DCE7FA;
    display:grid;place-items:center;flex-shrink:0;
  }
  .logo-mark svg{width:23px;height:23px}
  .logo-text{display:flex;flex-direction:column;line-height:1.15}
  .logo-text strong{font-size:19px;font-weight:700;color:var(--ink-900);letter-spacing:.01em}
  .logo-text em{
    font-style:normal;font-size:11px;letter-spacing:.04em;color:var(--ink-500);
    display:none;
  }
  @media (min-width:1024px){.logo-text em{display:block}}

  .main-nav{display:none;align-items:center;gap:32px;margin-left:auto}
  .nav-link{
    position:relative;font-size:15px;color:var(--ink-700);text-decoration:none;
    padding:22px 0;transition:color .2s var(--ease);min-height:44px;display:inline-flex;align-items:center;
  }
  .nav-link:hover{color:var(--brand-600)}
  .nav-link.is-active{color:var(--brand-600);font-weight:600}
  .nav-link.is-active::after{
    content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;
    background:var(--brand-600);border-radius:2px;
  }

  .header-actions{display:none;align-items:center;gap:18px;margin-left:auto}
  .text-entry{
    font-size:14px;color:var(--ink-500);text-decoration:none;min-height:44px;
    display:inline-flex;align-items:center;transition:color .2s var(--ease);
  }
  .text-entry:hover{color:var(--brand-600)}

  @media (min-width:1024px){
    .main-nav{display:flex}
    .header-actions{display:flex;margin-left:0}
  }

  /* ---------- 按钮体系 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-size:15px;font-weight:600;line-height:1;
    min-height:46px;padding:0 24px;border-radius:var(--r-full);
    border:1px solid transparent;text-decoration:none;cursor:pointer;
    transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
  }
  .btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-brand)}
  .btn-primary:hover{background:var(--brand-700);color:#fff;box-shadow:var(--shadow-lg)}
  .btn-primary:active{transform:translateY(1px);box-shadow:var(--shadow-sm)}
  .btn-ghost{background:#fff;border-color:#D7E1F0;color:var(--ink-700)}
  .btn-ghost:hover{border-color:var(--brand-500);background:var(--brand-50);color:var(--brand-700)}
  .btn-ghost:active{transform:translateY(1px)}
  .btn-sm{min-height:40px;padding:0 18px;font-size:14px}
  .btn-block{width:100%}
  .btn-text{
    display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
    color:var(--brand-600);text-decoration:none;min-height:44px;
    transition:color .2s var(--ease);
  }
  .btn-text i{transition:transform .2s var(--ease)}
  .btn-text:hover{color:var(--brand-900)}
  .btn-text:hover i{transform:translateX(2px)}

  /* ---------- 徽章 ---------- */
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    font-size:12px;font-weight:600;letter-spacing:.02em;
    padding:4px 10px;border-radius:var(--r-full);
  }
  .badge-brand{background:var(--brand-100);color:var(--brand-600)}
  .badge-cloud{background:var(--cloud-100);color:var(--cloud-700)}
  .badge-accent{background:var(--accent-100);color:var(--accent-700)}

  /* ---------- 面包屑与文章头 ---------- */
  .article-top{
    background:#fff;border-bottom:1px solid var(--line);
    padding:28px 0 44px;
    background-image:radial-gradient(circle at 92% 0%, rgba(46,107,230,.09), transparent 42%);
  }
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-400)}
  .breadcrumb a{color:var(--brand-600);text-decoration:none;transition:color .2s var(--ease)}
  .breadcrumb a:hover{color:var(--brand-900)}
  .breadcrumb .sep{color:var(--ink-400)}
  .breadcrumb .current{
    color:var(--ink-400);max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  }

  .article-head{max-width:760px;margin:34px auto 0;text-align:center}
  .article-head h1{
    margin:16px 0 0;font-size:32px;line-height:1.3;font-weight:700;color:var(--ink-900);
    letter-spacing:-.01em;
  }
  @media (min-width:768px){.article-head h1{font-size:34px}}
  .meta-row{
    display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px 14px;
    margin-top:16px;font-size:14px;color:var(--ink-500);
    font-variant-numeric:tabular-nums;
  }
  .meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--ink-400);display:inline-block}
  .article-lead{
    margin:18px auto 0;max-width:660px;font-size:18px;line-height:1.8;color:var(--ink-500);
  }

  /* ---------- 封面 ---------- */
  .article-cover{max-width:1000px;margin:40px auto 0}
  .article-cover .frame{
    border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
    background:linear-gradient(135deg,var(--brand-50),var(--brand-100));
    box-shadow:var(--shadow-md);
    aspect-ratio:16 / 9;
  }
  .article-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
  .article-cover .frame:hover img{transform:scale(1.04)}
  .article-cover figcaption{margin-top:12px;text-align:center;font-size:13px;color:var(--ink-400)}

  /* ---------- 正文区 ---------- */
  .article-layout{
    max-width:1060px;margin:0 auto;display:grid;grid-template-columns:minmax(0,1fr);gap:48px;
    padding-top:56px;
  }
  @media (min-width:1024px){
    .article-layout{grid-template-columns:minmax(0,1fr) 220px;gap:64px}
    .article-layout.no-toc{grid-template-columns:minmax(0,760px);justify-content:center}
  }

  .article-body{
    max-width:760px;font-size:17px;line-height:1.95;color:var(--ink-700);
    word-wrap:break-word;
  }
  .article-body p{margin:0 0 1.35em}
  .article-body h2{
    font-size:24px;line-height:1.4;font-weight:700;color:var(--ink-900);
    margin:2.2em 0 .9em;padding-left:14px;border-left:4px solid var(--brand-600);
  }
  .article-body h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--ink-900);margin:1.8em 0 .6em}
  .article-body h4{font-size:17px;font-weight:600;color:var(--ink-900);margin:1.5em 0 .5em}
  .article-body ul,.article-body ol{margin:0 0 1.35em;padding-left:1.4em}
  .article-body li{margin:.4em 0}
  .article-body ul li::marker{color:var(--brand-600)}
  .article-body ol li::marker{color:var(--brand-600);font-weight:600}
  .article-body blockquote{
    margin:1.6em 0;background:var(--brand-50);border-left:3px solid var(--brand-600);
    border-radius:0 12px 12px 0;padding:18px 24px;color:var(--ink-700);
  }
  .article-body blockquote p:last-child{margin-bottom:0}
  .article-body img{border-radius:12px;margin:1.6em auto}
  .article-body figure{margin:1.6em 0}
  .article-body figcaption{text-align:center;font-size:13px;color:var(--ink-400);margin-top:10px}
  .article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px}
  .article-body th,.article-body td{border:1px solid var(--line);padding:12px;text-align:left}
  .article-body th{background:var(--brand-100);color:var(--ink-900);font-weight:600}
  .article-body a{color:var(--brand-600);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
  .article-body a:hover{color:var(--brand-900)}
  .article-body code{
    background:#EEF2F8;border-radius:6px;padding:.15em .45em;
    font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;color:var(--ink-900);
  }
  .article-body pre{background:#F5F7FB;border:1px solid var(--line);border-radius:12px;padding:18px;overflow-x:auto}
  .article-body pre code{background:none;padding:0}
  .article-body hr{border:none;border-top:1px solid var(--line);margin:2.4em 0}

  /* ---------- 侧边阅读辅助 ---------- */
  .toc{display:none}
  @media (min-width:1024px){
    .toc{display:block}
    .toc-inner{position:sticky;top:96px}
  }
  .toc h2{font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--ink-400);margin:0 0 14px}
  .toc-list{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line)}
  .toc-list a{
    position:relative;display:block;padding:8px 0 8px 14px;font-size:14px;color:var(--ink-500);
    text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease);
  }
  .toc-list a:hover{color:var(--brand-600);background:var(--brand-50)}
  .toc-list a::before{
    content:"";position:absolute;left:-1px;top:6px;bottom:6px;width:3px;border-radius:3px;
    background:transparent;transition:background-color .2s var(--ease);
  }
  .toc-list a.is-current{color:var(--brand-600);font-weight:600}
  .toc-list a.is-current::before{background:var(--brand-600)}

  /* ---------- 标签与分享 ---------- */
  .tag-row{
    display:flex;flex-wrap:wrap;gap:10px;align-items:center;
    max-width:760px;margin:48px auto 0;padding-top:28px;border-top:1px solid var(--line);
  }
  .tag{
    font-size:13px;color:var(--ink-500);background:#fff;border:1px solid var(--line);
    border-radius:var(--r-full);padding:6px 14px;text-decoration:none;
    transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
  }
  .tag:hover{color:var(--brand-600);border-color:var(--brand-200);background:var(--brand-50)}
  .share-row{
    display:flex;flex-wrap:wrap;gap:16px;align-items:center;
    max-width:760px;margin:20px auto 0;
  }
  .share-row button{
    background:none;border:none;padding:0;cursor:pointer;
    display:inline-flex;align-items:center;gap:6px;min-height:44px;
    font-size:14px;font-weight:600;color:var(--ink-500);transition:color .2s var(--ease);
  }
  .share-row button:hover{color:var(--brand-600)}
  .share-row button i{font-size:14px}

  /* ---------- 空态 ---------- */
  .empty-state{
    min-height:280px;display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:14px;text-align:center;background:#fff;border:1px solid var(--line);
    border-radius:var(--r-xl);padding:40px 24px;box-shadow:var(--shadow-sm);
  }
  .empty-state i{font-size:56px;color:var(--brand-200)}
  .empty-state p{margin:0;font-size:15px;color:var(--ink-500)}

  /* ---------- CTA 条 ---------- */
  .cta-band{
    position:relative;overflow:hidden;margin-top:72px;
    background:var(--brand-600);
    padding:56px 0;
  }
  .cta-band::after{
    content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;
    background:radial-gradient(circle, rgba(20,163,176,.55), transparent 65%);
  }
  .cta-inner{position:relative;display:grid;gap:28px;align-items:center}
  @media (min-width:768px){.cta-inner{grid-template-columns:1.4fr 1fr}}
  .cta-band h2{margin:0;font-size:26px;line-height:1.35;font-weight:700;color:#fff}
  .cta-band p{margin:12px 0 0;font-size:16px;line-height:1.8;color:rgba(255,255,255,.82);max-width:620px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px}
  .cta-band .btn-primary{background:#fff;color:var(--brand-700);box-shadow:0 10px 24px -10px rgba(10,42,99,.6)}
  .cta-band .btn-primary:hover{background:var(--brand-50);color:var(--brand-900)}
  .cta-band .btn-ghost{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
  .cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff}

  /* ---------- 相关推荐 ---------- */
  .related-wrap{max-width:1060px;margin:0 auto;padding-top:72px}
  .related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}
  .related-head h2{margin:0;font-size:20px;font-weight:700;color:var(--ink-900)}
  .related-grid{display:grid;gap:16px;grid-template-columns:1fr}
  @media (min-width:768px){.related-grid{grid-template-columns:repeat(3,1fr)}}
  .related-card{
    display:flex;flex-direction:column;gap:14px;
    background:#fff;border:1px solid #E9EEF6;border-radius:var(--r-lg);
    padding:22px;text-decoration:none;box-shadow:var(--shadow-sm);
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--brand-200)}
  .related-card h3{margin:0;font-size:16px;font-weight:600;line-height:1.5;color:var(--ink-900);transition:color .2s var(--ease)}
  .related-card:hover h3{color:var(--brand-600)}
  .related-meta{
    display:flex;align-items:center;gap:10px;margin-top:auto;
    font-size:13px;color:var(--ink-400);font-variant-numeric:tabular-nums;
  }
  .related-meta i{margin-left:auto;color:var(--brand-600);transition:transform .2s var(--ease)}
  .related-card:hover .related-meta i{transform:translateX(3px)}

  .back-row{max-width:1060px;margin:0 auto;padding:28px 0 88px}

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:#0F1B2D;color:rgba(255,255,255,.72);
    padding:72px 0 0;margin-top:0;
  }
  .footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
  @media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}}
  .footer-brand p{font-size:14px;line-height:1.8;margin:16px 0 0;max-width:340px}
  .contact{display:flex;flex-direction:column;gap:10px;font-size:14px;margin-top:18px}
  .contact span{display:flex;align-items:center;gap:8px}
  .site-footer h4{color:#fff;font-size:15px;font-weight:600;margin:0 0 16px}
  .footer-list{display:flex;flex-direction:column;gap:12px}
  .footer-list a{
    color:rgba(255,255,255,.72);font-size:14px;text-decoration:none;min-height:24px;
    transition:color .2s var(--ease);
  }
  .footer-list a:hover{color:#fff}
  .site-footer .logo-text strong{color:#fff}
  .site-footer .logo-text em{color:rgba(255,255,255,.6)}
  .site-footer .logo-mark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.18)}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.12);margin-top:48px;padding:20px 0 40px;
    display:flex;flex-wrap:wrap;gap:8px 24px;font-size:13px;color:rgba(255,255,255,.6);
  }

  /* ---------- 移动端底部 Tab ---------- */
  .mobile-tab{
    position:fixed;left:0;right:0;bottom:0;z-index:50;display:flex;
    background:#fff;border-top:1px solid var(--line);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .mobile-tab a{
    flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    min-height:58px;font-size:11px;color:var(--ink-500);text-decoration:none;
    transition:color .2s var(--ease);
  }
  .mobile-tab a i{font-size:19px}
  .mobile-tab a.is-active{color:var(--brand-600)}
  .mobile-tab a.is-active i{
    background:var(--brand-100);border-radius:12px;padding:2px 10px;
  }
  @media (min-width:768px){.mobile-tab{display:none}}
  @media (max-width:767px){body{padding-bottom:72px}}

/* roulang page: category1 */
:root{
  --brand-900:#0A2A63;
  --brand-600:#1B56C4;
  --brand-500:#2E6BE6;
  --brand-100:#E8F0FE;
  --brand-50:#F3F7FF;
  --cloud-600:#0E7C86;
  --cloud-500:#14A3B0;
  --cloud-100:#E1F5F7;
  --accent-500:#F97316;
  --accent-700:#C2410C;
  --accent-100:#FFEDE3;
  --ink-900:#0F1B2D;
  --ink-700:#2B3A4F;
  --ink-500:#5A6B82;
  --ink-300:#93A1B5;
  --line:#E4EAF3;
  --surface:#F6F8FC;
  --white:#FFFFFF;
  --r-sm:8px; --r-md:12px; --r-lg:16px; --r-xl:20px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,27,45,.05);
  --sh-2:0 6px 16px -4px rgba(15,27,45,.08);
  --sh-3:0 16px 40px -12px rgba(15,27,45,.16);
  --sh-brand:0 8px 20px -6px rgba(27,86,196,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{ box-sizing:border-box; }

html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }

body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background-color:var(--surface);
  background-image:radial-gradient(rgba(27,86,196,.055) 1px, transparent 1px);
  background-size:22px 22px;
  padding-bottom:72px;
  overflow-x:hidden;
}
@media (min-width:768px){ body{ padding-bottom:0; } }

::selection{ background:var(--brand-100); color:var(--brand-900); }

img{ display:block; max-width:100%; height:auto; }
a{ color:inherit; }
button,input,select,textarea{ font:inherit; color:inherit; }

:focus-visible{
  outline:none;
  box-shadow:0 0 0 3px rgba(46,107,230,.28);
  border-radius:8px;
}

h1,h2,h3,h4{ color:var(--ink-900); margin:0; font-weight:700; }
p{ margin:0; }

.wrap{ width:100%; max-width:1200px; margin:0 auto; padding:0 20px; }
@media (min-width:1024px){ .wrap{ padding:0 32px; } }

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,.9);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{ box-shadow:var(--sh-2); }
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  gap:20px; height:68px;
}
.logo{ display:flex; align-items:center; gap:10px; text-decoration:none; flex-shrink:0; }
.logo-mark{
  width:38px; height:38px; display:grid; place-items:center;
  border-radius:12px; background:var(--brand-50); border:1px solid #DCE7FB;
  flex-shrink:0;
}
.logo-mark svg{ width:24px; height:24px; }
.logo-text{ display:flex; flex-direction:column; line-height:1.18; }
.logo-text strong{ font-size:19px; font-weight:700; color:var(--ink-900); letter-spacing:.01em; }
.logo-text em{
  font-style:normal; font-size:11.5px; letter-spacing:.04em;
  color:var(--ink-500); white-space:nowrap;
}
@media (max-width:1023px){ .logo-text em{ display:none; } }

.main-nav{ display:none; }
@media (min-width:1024px){
  .main-nav{ display:flex; align-items:center; gap:32px; }
}
.nav-link{
  position:relative; display:inline-flex; align-items:center;
  height:68px; font-size:15px; color:var(--ink-700);
  text-decoration:none; transition:color .2s var(--ease);
}
.nav-link:hover{ color:var(--brand-600); }
.nav-link.is-active{ color:var(--brand-600); font-weight:600; }
.nav-link.is-active::after{
  content:""; position:absolute; left:0; right:0; bottom:16px;
  height:2px; border-radius:2px; background:var(--brand-600);
}

.header-actions{ display:flex; align-items:center; gap:16px; }
.text-entry{
  display:none; font-size:14px; color:var(--brand-600);
  text-decoration:none; transition:color .2s var(--ease);
}
.text-entry:hover{ color:var(--brand-900); }
@media (min-width:1024px){ .text-entry{ display:inline-flex; } }

/* ============ 按钮 ============ */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  border:none; cursor:pointer; text-decoration:none;
  border-radius:var(--r-pill); font-weight:600;
  transition:background-color .2s var(--ease), color .2s var(--ease),
             border-color .2s var(--ease), box-shadow .2s var(--ease),
             transform .2s var(--ease);
}
.btn-primary{
  background:var(--brand-600); color:#fff; height:48px; padding:0 26px; font-size:15px;
  box-shadow:0 2px 6px -2px rgba(27,86,196,.35);
}
.btn-primary:hover{ background:var(--brand-900); box-shadow:var(--sh-brand); }
.btn-primary:active{ transform:translateY(1px); box-shadow:0 4px 10px -6px rgba(27,86,196,.5); }
.btn-sm{ height:40px; padding:0 18px; font-size:14px; }
.btn-ghost{
  background:#fff; color:var(--ink-700); border:1px solid #D7E1F0;
  height:48px; padding:0 24px; font-size:15px;
}
.btn-ghost:hover{ border-color:var(--brand-500); background:var(--brand-50); color:var(--brand-600); }
.btn-link{
  display:inline-flex; align-items:center; gap:6px;
  color:var(--brand-600); font-size:15px; font-weight:600;
  text-decoration:none; min-height:44px;
  transition:color .2s var(--ease);
}
.btn-link i{ transition:transform .2s var(--ease); }
.btn-link:hover{ color:var(--brand-900); }
.btn-link:hover i{ transform:translateX(3px); }

/* ============ 徽章 ============ */
.badge{
  display:inline-flex; align-items:center; gap:6px;
  padding:4px 12px; border-radius:var(--r-pill);
  font-size:12px; font-weight:600; letter-spacing:.02em;
}
.badge-brand{ background:var(--brand-100); color:var(--brand-600); }
.badge-cloud{ background:var(--cloud-100); color:var(--cloud-600); }
.badge-accent{ background:var(--accent-100); color:var(--accent-700); }

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex; flex-wrap:wrap; align-items:center; gap:8px;
  font-size:14px; color:var(--ink-500); padding:20px 0 0;
}
.breadcrumb a{ color:var(--brand-600); text-decoration:none; }
.breadcrumb a:hover{ color:var(--brand-900); }
.breadcrumb .sep{ color:var(--ink-300); }
.breadcrumb .current{ color:var(--ink-300); max-width:60%; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }

/* ============ 页头 ============ */
.page-hero{
  position:relative; overflow:hidden;
  padding:28px 0 72px;
}
.page-hero::before{
  content:""; position:absolute; top:0; bottom:0; left:0; width:42%;
  background-image:repeating-linear-gradient(90deg, rgba(27,86,196,.13) 0 1px, transparent 1px 16px);
  -webkit-mask-image:linear-gradient(180deg, transparent, #000 25%, #000 75%, transparent);
  mask-image:linear-gradient(180deg, transparent, #000 25%, #000 75%, transparent);
  pointer-events:none;
}
.page-hero::after{
  content:""; position:absolute; top:-140px; right:-120px; width:460px; height:460px;
  background:radial-gradient(circle, rgba(27,86,196,.12), transparent 68%);
  pointer-events:none;
}
.page-hero .wrap{ position:relative; z-index:1; }

.hero-grid{
  display:grid; gap:40px; margin-top:32px;
  grid-template-columns:1fr;
}
@media (min-width:1024px){
  .hero-grid{ grid-template-columns:7fr 5fr; gap:56px; align-items:center; }
}

.hero-title{
  font-size:26px; line-height:1.25; margin:18px 0 0; letter-spacing:-.01em;
}
@media (min-width:768px){ .hero-title{ font-size:32px; } }
@media (min-width:1024px){ .hero-title{ font-size:36px; line-height:1.2; } }

.lede{
  margin-top:18px; font-size:16px; line-height:1.85; color:var(--ink-500);
  max-width:600px;
}
@media (min-width:768px){ .lede{ font-size:18px; line-height:1.8; } }

.hero-actions{ display:flex; flex-wrap:wrap; gap:14px; margin-top:28px; }

.hero-meta{
  display:flex; flex-wrap:wrap; align-items:center; gap:14px;
  margin-top:26px; font-size:14px; color:var(--ink-500);
}
.hero-meta span{ display:inline-flex; align-items:center; gap:7px; }
.hero-meta i{ color:var(--brand-600); font-size:15px; }
.hero-meta .divider{ width:1px; height:14px; background:var(--line); }

.hero-panel{
  background:#fff; border:1px solid var(--line); border-radius:var(--r-xl);
  padding:26px; box-shadow:var(--sh-3);
}
.hero-panel h2{ font-size:16px; font-weight:600; }
.panel-figure{
  margin-top:18px; border-radius:var(--r-lg); overflow:hidden;
  aspect-ratio:16/10; background:linear-gradient(135deg,var(--brand-50),#fff);
}
.panel-figure img{ width:100%; height:100%; object-fit:cover; }
.stat-row{
  display:grid; grid-template-columns:repeat(3,1fr); gap:12px; margin-top:20px;
}
.stat-box{
  background:var(--brand-50); border:1px solid #DCE7FB; border-radius:var(--r-md);
  padding:12px 8px; text-align:center;
}
.stat-box b{
  display:block; font-size:22px; font-weight:700; color:var(--brand-600);
  font-variant-numeric:tabular-nums; line-height:1.2;
}
.stat-box span{ font-size:12px; color:var(--ink-500); letter-spacing:.02em; }

/* ============ 通用区块 ============ */
.section{ padding:56px 0; }
@media (min-width:1024px){ .section{ padding:96px 0; } }
.section-head{ max-width:720px; margin-bottom:40px; }
.section-head h2{ font-size:22px; line-height:1.3; margin-top:14px; }
@media (min-width:768px){ .section-head h2{ font-size:28px; line-height:1.28; } }
.section-head p{ margin-top:14px; font-size:16px; color:var(--ink-500); }

/* ============ 五步流程 ============ */
.step-row{ list-style:none; padding:0; margin:0; display:grid; gap:20px; }
@media (min-width:1024px){ .step-row{ grid-template-columns:repeat(5,1fr); gap:24px; } }
@media (min-width:640px) and (max-width:1023px){ .step-row{ grid-template-columns:repeat(2,1fr); } }

.step-item{
  position:relative; background:#fff; border:1px solid #E9EEF6;
  border-radius:var(--r-lg); padding:24px; box-shadow:var(--sh-1);
  transition:transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.step-item:hover{ transform:translateY(-3px); box-shadow:var(--sh-2); border-color:#CFDEF7; }
@media (min-width:1024px){
  .step-item::after{
    content:""; position:absolute; top:40px; right:-24px; width:24px; height:1px;
    background:linear-gradient(90deg, rgba(27,86,196,.5), rgba(27,86,196,.12));
  }
  .step-item:last-child::after{ display:none; }
}
.step-num{
  width:32px; height:32px; border-radius:50%; background:var(--brand-600); color:#fff;
  display:grid; place-items:center; font-size:14px; font-weight:700;
  font-variant-numeric:tabular-nums;
}
.step-item h3{ margin-top:16px; font-size:17px; font-weight:600; line-height:1.4; }
.step-item p{ margin-top:10px; font-size:14px; line-height:1.75; color:var(--ink-500); }

/* ============ 交替图文 ============ */
.media-row{
  display:grid; gap:28px; align-items:center;
  background:#fff; border:1px solid #E9EEF6; border-radius:var(--r-xl);
  padding:22px; box-shadow:var(--sh-1);
  transition:box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.media-row + .media-row{ margin-top:24px; }
.media-row:hover{ box-shadow:var(--sh-2); border-color:#DCE7FB; }
@media (min-width:1024px){
  .media-row{ grid-template-columns:5fr 7fr; gap:44px; padding:28px; }
  .media-row.reverse{ grid-template-columns:7fr 5fr; }
  .media-row.reverse .media-figure{ order:2; }
}
.media-figure{
  border-radius:var(--r-lg); overflow:hidden; aspect-ratio:4/3;
  background:linear-gradient(135deg,var(--brand-50),#E9F1FE);
}
.media-figure img{ width:100%; height:100%; object-fit:cover; transition:transform .35s var(--ease); }
.media-row:hover .media-figure img{ transform:scale(1.04); }
.media-body h3{ font-size:19px; font-weight:600; margin-top:14px; }
.media-body p{ margin-top:12px; font-size:15px; line-height:1.8; color:var(--ink-500); }
.media-list{ list-style:none; padding:0; margin:16px 0 0; display:grid; gap:8px; }
.media-list li{
  display:flex; gap:10px; align-items:flex-start;
  font-size:14px; line-height:1.7; color:var(--ink-700);
}
.media-list i{ color:var(--brand-600); font-size:13px; margin-top:6px; }

/* ============ 锚点双栏 ============ */
.anchor-layout{ display:grid; gap:32px; }
@media (min-width:1024px){ .anchor-layout{ grid-template-columns:220px 1fr; gap:52px; } }

.anchor-nav{ position:static; }
@media (min-width:1024px){ .anchor-nav{ position:sticky; top:96px; align-self:start; } }
.anchor-title{
  font-size:12px; letter-spacing:.06em; color:var(--ink-500);
  font-weight:600; margin-bottom:12px;
}
.anchor-list{ display:flex; gap:8px; overflow-x:auto; padding-bottom:6px; }
@media (min-width:1024px){ .anchor-list{ flex-direction:column; overflow:visible; padding-bottom:0; } }
.anchor-list a{
  flex-shrink:0; display:inline-flex; align-items:center;
  min-height:44px; padding:0 16px; border-radius:var(--r-pill);
  font-size:14px; color:var(--ink-700); text-decoration:none;
  background:#fff; border:1px solid var(--line);
  transition:all .2s var(--ease);
}
@media (min-width:1024px){
  .anchor-list a{
    border:none; background:transparent; border-radius:var(--r-md);
    border-left:3px solid transparent; padding:0 14px;
  }
}
.anchor-list a:hover{ color:var(--brand-600); border-color:#CFDEF7; background:var(--brand-50); }
@media (min-width:1024px){
  .anchor-list a:hover{ border-left-color:var(--brand-600); }
}

.doc-block + .doc-block{ margin-top:36px; }
.doc-block h3{
  font-size:19px; font-weight:600; padding-left:14px;
  border-left:4px solid var(--brand-600); line-height:1.4;
}
.doc-block p{ margin-top:14px; font-size:15.5px; line-height:1.9; color:var(--ink-700); }
.doc-note{
  margin-top:16px; padding:16px 20px; border-radius:var(--r-md);
  background:var(--brand-50); border-left:3px solid var(--brand-600);
  font-size:14.5px; line-height:1.8; color:var(--ink-700);
}

/* ============ FAQ ============ */
.faq-list{ display:grid; gap:14px; max-width:860px; }
.faq-item{
  background:#fff; border:1px solid var(--line); border-radius:14px;
  overflow:hidden; transition:background-color .2s var(--ease), border-color .2s var(--ease);
}
.faq-item[open]{
  background:var(--brand-50); border-color:#D7E1F0;
  box-shadow:inset 3px 0 0 var(--brand-600);
}
.faq-q{
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  padding:18px 20px; cursor:pointer; list-style:none;
  font-size:16px; font-weight:600; color:var(--ink-900); line-height:1.5;
}
.faq-q::-webkit-details-marker{ display:none; }
.faq-q::after{
  content:"+"; flex-shrink:0; font-size:20px; font-weight:400;
  color:var(--brand-600); transition:transform .2s var(--ease); line-height:1;
}
.faq-item[open] .faq-q::after{ transform:rotate(45deg); }
.faq-a{ padding:0 20px 20px; font-size:15px; line-height:1.8; color:var(--ink-500); }

/* ============ CTA 条 ============ */
.cta-band{
  position:relative; overflow:hidden; background:var(--brand-600);
  padding:56px 0;
}
@media (min-width:1024px){ .cta-band{ padding:72px 0; } }
.cta-band::after{
  content:""; position:absolute; top:-120px; right:-80px; width:400px; height:400px;
  background:radial-gradient(circle, rgba(20,163,176,.5), transparent 68%);
  pointer-events:none;
}
.cta-inner{
  position:relative; z-index:1;
  display:grid; gap:28px;
}
@media (min-width:1024px){ .cta-inner{ grid-template-columns:7fr 5fr; align-items:center; gap:48px; } }
.cta-inner h2{ color:#fff; font-size:22px; line-height:1.3; }
@media (min-width:768px){ .cta-inner h2{ font-size:28px; } }
.cta-inner p{ margin-top:14px; color:rgba(255,255,255,.82); font-size:16px; line-height:1.8; }
.cta-actions{ display:flex; flex-wrap:wrap; gap:14px; }
@media (min-width:1024px){ .cta-actions{ justify-content:flex-end; } }
.btn-light{
  background:#fff; color:var(--brand-600); height:48px; padding:0 26px; font-size:15px;
}
.btn-light:hover{ background:var(--brand-50); box-shadow:0 10px 24px -12px rgba(10,42,99,.6); }
.btn-outline-light{
  background:transparent; color:#fff; border:1px solid rgba(255,255,255,.5);
  height:48px; padding:0 24px; font-size:15px;
}
.btn-outline-light:hover{ background:rgba(255,255,255,.14); border-color:#fff; }

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-900); color:rgba(255,255,255,.72);
  padding:56px 0 40px; font-size:14px; line-height:1.75;
}
.footer-grid{ display:grid; gap:32px; }
@media (min-width:768px){ .footer-grid{ grid-template-columns:repeat(2,1fr); } }
@media (min-width:1024px){ .footer-grid{ grid-template-columns:1.5fr 1fr 1fr 1fr; gap:32px; } }

.footer-brand .logo-text strong{ color:#fff; }
.footer-brand .logo-text em{ color:rgba(255,255,255,.55); }
.footer-brand p{ margin-top:16px; max-width:340px; color:rgba(255,255,255,.72); }
.contact{ margin-top:18px; display:grid; gap:8px; font-size:13.5px; }
.contact span{ display:inline-flex; align-items:center; gap:8px; }
.contact i{ color:var(--cloud-500); }

.site-footer h4{
  color:#fff; font-size:15px; font-weight:600; margin-bottom:16px;
}
.footer-list{ display:grid; gap:10px; }
.footer-list a{
  color:rgba(255,255,255,.72); text-decoration:none; font-size:14px;
  transition:color .2s var(--ease); display:inline-block; min-height:22px;
}
.footer-list a:hover{ color:#fff; }

.footer-bottom{
  margin-top:40px; padding-top:20px; border-top:1px solid rgba(255,255,255,.12);
  display:flex; flex-wrap:wrap; gap:10px 24px; justify-content:space-between;
  font-size:13px; color:rgba(255,255,255,.55);
}

/* ============ 移动端底部 Tab ============ */
.mobile-tab{
  position:fixed; left:0; right:0; bottom:0; z-index:50;
  display:flex; background:#fff; border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -2px 12px -6px rgba(15,27,45,.18);
}
@media (min-width:768px){ .mobile-tab{ display:none; } }
.tab-item{
  position:relative; flex:1; display:flex; flex-direction:column;
  align-items:center; justify-content:center; gap:3px;
  height:58px; text-decoration:none; font-size:11px;
  color:var(--ink-500); transition:color .2s var(--ease);
}
.tab-ico{
  width:36px; height:26px; display:grid; place-items:center;
  border-radius:12px; font-size:16px;
  transition:background-color .2s var(--ease), color .2s var(--ease);
}
.tab-item.is-active{ color:var(--brand-600); font-weight:600; }
.tab-item.is-active .tab-ico{ background:var(--brand-100); color:var(--brand-600); }
.tab-item.is-active::before{
  content:""; position:absolute; top:0; width:24px; height:3px;
  border-radius:0 0 3px 3px; background:var(--brand-600);
}

/* ============ 入场动效 ============ */
.reveal{ opacity:0; transform:translateY(12px); transition:opacity .5s var(--ease), transform .5s var(--ease); }
.reveal.is-in{ opacity:1; transform:none; }
@media (prefers-reduced-motion:reduce){
  .reveal{ opacity:1; transform:none; transition:none; }
  html{ scroll-behavior:auto; }
}

/* roulang page: category2 */
:root{
  --brand-900:#0A2A63;
  --brand-600:#1B56C4;
  --brand-500:#2E6BE6;
  --brand-100:#E8F0FE;
  --brand-50:#F3F7FF;
  --cloud-700:#0E7C86;
  --cloud-500:#14A3B0;
  --cloud-50:#E1F5F7;
  --accent-700:#C2410C;
  --accent-500:#F97316;
  --accent-50:#FFEDE3;
  --ink-900:#0F1B2D;
  --ink-700:#2B3A4F;
  --ink-500:#5A6B82;
  --ink-300:#93A1B5;
  --line:#E4EAF3;
  --surface:#F6F8FC;
  --white:#FFFFFF;
  --radius-sm:8px;
  --radius-md:12px;
  --radius-lg:16px;
  --radius-xl:20px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background-color:var(--surface);
  background-image:radial-gradient(rgba(10,42,99,.045) 1px, transparent 1px);
  background-size:24px 24px;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-900);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:var(--brand-100);color:var(--brand-900);}
:focus-visible{outline:3px solid rgba(46,107,230,.28);outline-offset:2px;border-radius:6px;}
.nums{font-variant-numeric:tabular-nums;}

/* ---------- 容器 ---------- */
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){ .wrap{padding:0 32px;} }

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 16px -4px rgba(15,27,45,.08);}
.header-inner{display:flex;align-items:center;gap:20px;height:68px;}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:inherit;}
.logo-mark{display:flex;align-items:center;justify-content:center;width:28px;height:28px;flex:none;}
.logo-mark svg{width:26px;height:26px;display:block;}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-text strong{font-size:19px;font-weight:700;color:var(--ink-900);letter-spacing:.01em;}
.logo-text em{font-style:normal;font-size:11px;letter-spacing:.04em;color:var(--ink-500);display:none;}
@media (min-width:1024px){ .logo-text em{display:block;} }
.main-nav{display:none;align-items:center;gap:32px;margin-left:auto;}
@media (min-width:1024px){ .main-nav{display:flex;} }
.nav-link{position:relative;font-size:15px;color:var(--ink-700);padding:22px 0;transition:color .2s var(--ease);}
.nav-link:hover{color:var(--brand-600);}
.nav-link.is-active{color:var(--brand-600);font-weight:600;}
.nav-link.is-active::after{
  content:'';position:absolute;left:0;right:0;bottom:12px;height:2px;
  background:var(--brand-600);border-radius:2px;
}
.header-actions{display:none;align-items:center;gap:16px;}
@media (min-width:768px){ .header-actions{display:flex;} }
@media (max-width:1023px){ .header-actions{margin-left:auto;} }
.text-entry{display:none;font-size:15px;color:var(--ink-700);}
.text-entry:hover{color:var(--brand-600);}
@media (min-width:1024px){ .text-entry{display:inline-block;} }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;text-decoration:none;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 8px 20px -6px rgba(27,86,196,.45);}
.btn-primary:hover{background:var(--brand-900);color:#fff;box-shadow:0 10px 24px -6px rgba(10,42,99,.5);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 10px -6px rgba(10,42,99,.45);}
.btn-ghost{background:#fff;color:var(--ink-700);border-color:#D7E1F0;}
.btn-ghost:hover{border-color:var(--brand-500);background:var(--brand-50);color:var(--brand-600);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;line-height:1.5;
}
.badge-brand{background:var(--brand-100);color:var(--brand-600);}
.badge-cloud{background:var(--cloud-50);color:var(--cloud-700);}
.badge-accent{background:var(--accent-50);color:var(--accent-700);}

/* ---------- 卡片 ---------- */
.card{
  background:#fff;border:1px solid #E9EEF6;border-radius:var(--radius-card,18px);
  box-shadow:0 6px 16px -4px rgba(15,27,45,.08);
  padding:24px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:0 16px 40px -12px rgba(15,27,45,.16);border-color:#D7E1F0;}

.thumb{
  border-radius:14px;overflow:hidden;background:linear-gradient(135deg,#F3F7FF,#E8F0FE);
  aspect-ratio:16/9;
}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.card:hover .thumb img{transform:scale(1.04);}

/* ---------- 页头 ---------- */
.page-hero{position:relative;overflow:hidden;padding:40px 0 56px;}
@media (min-width:1024px){ .page-hero{padding:56px 0 80px;} }
.hero-glow{
  position:absolute;top:-110px;right:-90px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle, rgba(20,163,176,.18) 0%, rgba(20,163,176,0) 70%);
  pointer-events:none;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-500);margin-bottom:22px;}
.crumb a{color:var(--brand-600);}
.crumb a:hover{color:var(--brand-900);}
.crumb .sep{color:var(--ink-300);}
.crumb .current{color:var(--ink-300);}

.hero-grid{display:grid;gap:36px;}
@media (min-width:1024px){ .hero-grid{grid-template-columns:7fr 5fr;align-items:center;gap:48px;} }

h1.hero-title{font-size:26px;line-height:1.25;font-weight:700;margin:18px 0 16px;}
@media (min-width:768px){ h1.hero-title{font-size:32px;} }
@media (min-width:1024px){ h1.hero-title{font-size:36px;line-height:1.2;} }
.hero-lead{font-size:17px;line-height:1.85;color:var(--ink-500);max-width:640px;}
@media (min-width:1024px){ .hero-lead{font-size:18px;} }

.hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:26px;font-size:14px;color:var(--ink-500);}
.hero-meta .item{display:inline-flex;align-items:center;gap:8px;}
.hero-meta .divider{width:1px;height:16px;background:var(--line);}
.hero-meta svg{width:18px;height:18px;flex:none;}

.stat-panel{background:#fff;border:1px solid #E9EEF6;border-radius:20px;box-shadow:0 16px 40px -12px rgba(15,27,45,.16);padding:26px;}
@media (min-width:1024px){ .stat-panel{padding:30px;} }
.stat-row{display:flex;align-items:baseline;gap:10px;padding:16px 0;border-bottom:1px dashed var(--line);}
.stat-row:last-child{border-bottom:0;padding-bottom:0;}
.stat-row:first-child{padding-top:0;}
.stat-num{font-size:30px;font-weight:700;color:var(--cloud-700);line-height:1;font-variant-numeric:tabular-nums;}
.stat-label{font-size:15px;color:var(--ink-700);font-weight:600;}
.stat-desc{font-size:13px;color:var(--ink-500);margin-top:4px;}

/* ---------- 板块 ---------- */
.section{padding:56px 0;}
@media (min-width:1024px){ .section{padding:96px 0;} }
.section-head{max-width:720px;margin-bottom:36px;}
.section-head h2{font-size:22px;line-height:1.32;margin:14px 0 12px;}
@media (min-width:1024px){ .section-head h2{font-size:28px;} }
.section-head p{font-size:16px;color:var(--ink-500);}

/* ---------- 能力卡片 ---------- */
.cap-large{display:flex;flex-direction:column;gap:18px;padding:26px;}
@media (min-width:1024px){ .cap-large{padding:30px;} }
.cap-large h3{font-size:20px;}
.cap-large p{font-size:15.5px;color:var(--ink-500);}
.cap-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px;}
.cap-list span{
  font-size:13px;color:var(--brand-600);background:var(--brand-50);
  border:1px solid #DCE7FA;border-radius:999px;padding:5px 12px;
}
.cap-mini{display:flex;gap:16px;align-items:flex-start;padding:20px;}
.cap-mini .icon-box{
  flex:none;width:44px;height:44px;border-radius:14px;background:var(--cloud-50);
  display:flex;align-items:center;justify-content:center;color:var(--cloud-700);
}
.cap-mini .icon-box svg{width:24px;height:24px;}
.cap-mini h3{font-size:17px;margin-bottom:6px;}
.cap-mini p{font-size:14.5px;color:var(--ink-500);line-height:1.7;}

/* ---------- 自检清单 ---------- */
.check-grid{display:grid;gap:14px;}
@media (min-width:768px){ .check-grid{grid-template-columns:1fr 1fr;gap:16px 24px;} }
.check-item{
  display:flex;align-items:flex-start;gap:12px;
  padding:14px 16px;min-height:56px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  cursor:pointer;transition:border-color .2s var(--ease),background .2s var(--ease);
}
.check-item:hover{border-color:#D7E1F0;background:var(--brand-50);}
.check-item input{
  appearance:none;-webkit-appearance:none;
  flex:none;width:22px;height:22px;margin:2px 0 0;
  border:2px solid var(--brand-600);border-radius:6px;background:#fff;
  position:relative;cursor:pointer;transition:background .2s var(--ease);
}
.check-item input:checked{background:var(--brand-600);}
.check-item input:checked::after{
  content:'';position:absolute;left:5px;top:1px;width:6px;height:11px;
  border:2px solid #fff;border-top:0;border-left:0;transform:rotate(45deg);
}
.check-item span{font-size:15px;line-height:1.6;color:var(--ink-700);}

/* ---------- 紧凑时间线 ---------- */
.mini-timeline{position:relative;max-width:820px;margin:0 auto;padding-left:34px;}
.mini-timeline::before{
  content:'';position:absolute;left:13px;top:12px;bottom:12px;
  border-left:2px dashed var(--brand-100);
}
.mini-timeline li{position:relative;margin-bottom:20px;}
.mini-timeline li:last-child{margin-bottom:0;}
.mini-timeline .dot{
  position:absolute;left:-33px;top:20px;width:26px;height:26px;border-radius:50%;
  background:#fff;border:2px solid var(--cloud-500);
  display:flex;align-items:center;justify-content:center;
}
.mini-timeline .dot::after{content:'';width:8px;height:8px;border-radius:50%;background:var(--cloud-500);}
.mini-timeline .step-card{
  background:#fff;border:1px solid #E9EEF6;border-radius:14px;padding:18px;
  box-shadow:0 1px 2px rgba(15,27,45,.05);
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.mini-timeline .step-card:hover{box-shadow:0 6px 16px -4px rgba(15,27,45,.08);border-color:#D7E1F0;}
.mini-timeline h3{font-size:17px;margin:10px 0 6px;}
.mini-timeline p{font-size:14.5px;color:var(--ink-500);line-height:1.7;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:860px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  transition:background .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item:hover{border-color:#D7E1F0;}
.faq-item[open]{background:var(--brand-50);box-shadow:inset 3px 0 0 var(--brand-600);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;font-size:16px;font-weight:600;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{position:relative;flex:none;width:18px;height:18px;}
.faq-icon::before,.faq-icon::after{
  content:'';position:absolute;background:var(--brand-600);border-radius:2px;
  transition:transform .2s var(--ease);
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item[open] .faq-icon::before{transform:rotate(45deg);}
.faq-item[open] .faq-icon::after{transform:rotate(-45deg);}
.faq-answer{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--ink-500);}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--brand-600);border-radius:24px;
  padding:38px 26px;
  box-shadow:0 16px 40px -12px rgba(27,86,196,.45);
}
@media (min-width:1024px){ .cta-band{padding:52px 56px;} }
.cta-band::after{
  content:'';position:absolute;top:-120px;right:-80px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle, rgba(20,163,176,.38) 0%, rgba(20,163,176,0) 70%);
  pointer-events:none;
}
.cta-inner{position:relative;display:grid;gap:26px;}
@media (min-width:1024px){ .cta-inner{grid-template-columns:1fr auto;align-items:center;gap:40px;} }
.cta-band h2{color:#fff;font-size:22px;line-height:1.35;}
@media (min-width:1024px){ .cta-band h2{font-size:28px;} }
.cta-band p{color:rgba(255,255,255,.82);font-size:15.5px;margin-top:10px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-band .btn-ghost{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.4);color:#fff;}
.cta-band .btn-ghost:hover{background:#fff;color:var(--brand-600);border-color:#fff;}
.cta-band .btn-primary{background:#fff;color:var(--brand-600);box-shadow:0 8px 20px -8px rgba(10,42,99,.6);}
.cta-band .btn-primary:hover{background:var(--brand-50);color:var(--brand-900);}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F1B2D;color:rgba(255,255,255,.72);padding:64px 0 26px;margin-top:0;}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr 1fr;}
@media (min-width:1024px){ .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;} }
.footer-brand .logo-text strong{color:#fff;}
.footer-brand .logo-text em{color:rgba(255,255,255,.6);}
.footer-brand p{font-size:14px;line-height:1.8;margin:16px 0 18px;max-width:340px;}
.footer-brand .contact{display:flex;flex-direction:column;gap:8px;font-size:13.5px;}
.footer-brand .contact i{color:var(--cloud-500);margin-right:8px;}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-list{display:flex;flex-direction:column;gap:10px;}
.footer-list a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-list a:hover{color:#fff;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 移动底部 Tab ---------- */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:50;
  display:flex;background:#fff;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
@media (min-width:768px){ .mobile-tab{display:none;} }
.tab-item{
  position:relative;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;height:58px;font-size:11px;color:var(--ink-500);
}
.tab-item .tab-icon{
  display:flex;align-items:center;justify-content:center;
  width:34px;height:24px;border-radius:12px;transition:background .2s var(--ease);
}
.tab-item svg{width:22px;height:22px;}
.tab-item.is-active{color:var(--brand-600);font-weight:600;}
.tab-item.is-active .tab-icon{background:var(--brand-100);}
.tab-item.is-active::before{
  content:'';position:absolute;top:0;width:22px;height:3px;
  border-radius:0 0 3px 3px;background:var(--brand-600);
}
@media (max-width:767px){
  body{padding-bottom:72px;}
  .site-footer{padding-bottom:96px;}
}

/* roulang page: category3 */
:root{
    --brand-900:#0A2A63; --brand-600:#1B56C4; --brand-500:#2E6BE6; --brand-100:#E8F0FE; --brand-50:#F3F7FF;
    --cloud-500:#14A3B0; --cloud-700:#0E7C86; --cloud-50:#E1F5F7;
    --accent-500:#F97316; --accent-700:#C2410C; --accent-50:#FFEDE3;
    --ink-900:#0F1B2D; --ink-700:#2B3A4F; --ink-500:#5A6B82; --ink-300:#93A1B5;
    --line:#E4EAF3; --surface:#F6F8FC; --card:#FFFFFF;
    --r-sm:8px; --r-md:12px; --r-lg:16px; --r-xl:20px; --r-pill:999px;
    --sh-1:0 1px 2px rgba(15,27,45,.05);
    --sh-2:0 6px 16px -4px rgba(15,27,45,.08);
    --sh-3:0 16px 40px -12px rgba(15,27,45,.16);
    --sh-brand:0 8px 20px -6px rgba(27,86,196,.45);
    --ease:cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{box-sizing:border-box}
  html{background:var(--surface);scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  body{
    margin:0;
    font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;line-height:1.85;color:var(--ink-700);background:transparent;
    -webkit-font-smoothing:antialiased;
    padding-bottom:72px;
  }
  body::before{
    content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
    background-image:radial-gradient(rgba(15,27,45,.045) 1px, transparent 1px);
    background-size:22px 22px;
  }
  @media (min-width:768px){ body{padding-bottom:0} }

  img{max-width:100%;display:block;height:auto}
  a{color:inherit;text-decoration:none}
  button,input,select,textarea{font-family:inherit;font-size:inherit}
  h1,h2,h3,h4,p{margin:0}
  ul{margin:0;padding:0;list-style:none}

  a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
    outline:none;
    box-shadow:0 0 0 3px rgba(46,107,230,.28);
    border-radius:8px;
  }
  ::selection{background:var(--brand-100);color:var(--brand-900)}

  .wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media (min-width:1024px){ .wrap{padding:0 32px} }

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
    transition:box-shadow .2s var(--ease);
  }
  .site-header.is-scrolled{box-shadow:var(--sh-2)}
  .header-inner{display:flex;align-items:center;gap:20px;height:68px}

  .logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
  .logo-mark{
    width:30px;height:30px;flex:0 0 30px;display:grid;place-items:center;
    background:var(--brand-50);border-radius:10px;
    transition:background .2s var(--ease);
  }
  .logo:hover .logo-mark{background:var(--brand-100)}
  .logo-mark svg{width:23px;height:23px}
  .logo-text{display:flex;flex-direction:column;line-height:1.15}
  .logo-text strong{font-size:19px;font-weight:700;color:var(--ink-900);letter-spacing:.01em}
  .logo-text em{
    font-style:normal;font-size:11.5px;letter-spacing:.04em;color:var(--ink-500);
    display:none;white-space:nowrap;
  }
  @media (min-width:1024px){ .logo-text em{display:block} }

  .main-nav{display:none;align-items:center;gap:32px;margin-left:auto}
  @media (min-width:1024px){ .main-nav{display:flex} }
  .nav-link{
    position:relative;font-size:15px;color:var(--ink-700);padding:6px 0;
    transition:color .2s var(--ease);white-space:nowrap;
  }
  .nav-link:hover{color:var(--brand-600)}
  .nav-link.is-active{color:var(--brand-600);font-weight:600}
  .nav-link.is-active::after{
    content:"";position:absolute;left:0;right:0;bottom:-14px;height:2px;
    background:var(--brand-600);border-radius:2px;
  }

  .header-actions{margin-left:auto;display:flex;align-items:center;gap:16px}
  @media (min-width:1024px){ .header-actions{margin-left:0} }
  .text-entry{display:none;font-size:15px;color:var(--ink-700);transition:color .2s var(--ease)}
  @media (min-width:1024px){ .text-entry{display:inline} }
  .text-entry:hover{color:var(--brand-600)}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 22px;border-radius:var(--r-pill);
    font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
    transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
    white-space:nowrap;
  }
  .btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--sh-brand)}
  .btn-primary:hover{background:var(--brand-900);box-shadow:0 10px 24px -6px rgba(27,86,196,.5)}
  .btn-primary:active{transform:translateY(1px);box-shadow:none}
  .btn-ghost{background:#fff;color:var(--ink-700);border-color:#D7E1F0}
  .btn-ghost:hover{border-color:var(--brand-500);background:var(--brand-50);color:var(--brand-600)}
  .btn-light{background:#fff;color:var(--brand-600)}
  .btn-light:hover{background:var(--brand-50);transform:translateY(-1px)}
  .btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
  .btn-outline-light:hover{background:rgba(255,255,255,.14);border-color:#fff}
  .btn-sm{min-height:40px;padding:0 18px;font-size:14px}
  .btn-block{width:100%;min-height:50px;border-radius:var(--r-md)}
  .btn-text{
    display:inline-flex;align-items:center;gap:8px;min-height:44px;
    color:var(--brand-600);font-weight:600;font-size:15px;
  }
  .btn-text i{transition:transform .2s var(--ease)}
  .btn-text:hover i{transform:translateX(2px)}
  .btn-text:hover{color:var(--brand-900)}

  /* ============ 面包屑 ============ */
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:14px;color:var(--ink-500);padding:20px 0 0;
  }
  .breadcrumb a{color:var(--brand-600)}
  .breadcrumb a:hover{text-decoration:underline}
  .breadcrumb .sep{color:var(--ink-300)}
  .breadcrumb .current{color:var(--ink-300)}

  /* ============ 页头 ============ */
  .page-hero{position:relative;padding:36px 0 44px;overflow:hidden}
  .page-hero::after{
    content:"";position:absolute;right:-140px;top:-160px;width:440px;height:440px;
    border-radius:50%;pointer-events:none;
    background:radial-gradient(circle, rgba(27,86,196,.10), rgba(27,86,196,0) 68%);
  }
  .hero-grid{position:relative;display:grid;gap:32px;align-items:start}
  @media (min-width:1024px){ .hero-grid{grid-template-columns:1.15fr .85fr;gap:56px} }

  .badge{
    display:inline-flex;align-items:center;gap:7px;
    background:var(--brand-100);color:var(--brand-600);
    font-size:12px;font-weight:600;letter-spacing:.02em;
    padding:5px 12px;border-radius:var(--r-pill);
  }
  .page-title{
    font-size:30px;line-height:1.2;font-weight:700;color:var(--ink-900);
    margin-top:18px;letter-spacing:-.01em;
  }
  @media (min-width:1024px){ .page-title{font-size:36px} }
  .lead{font-size:17px;line-height:1.8;color:var(--ink-500);margin-top:16px;max-width:660px}
  @media (min-width:1024px){ .lead{font-size:18px} }

  .meta-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
  .meta-chip{
    display:inline-flex;align-items:center;gap:8px;
    font-size:14px;color:var(--ink-700);
    background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
    padding:8px 14px;box-shadow:var(--sh-1);
  }
  .meta-chip i{color:var(--brand-600);font-size:13px}

  /* ============ 搜索卡 ============ */
  .search-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);
    box-shadow:var(--sh-2);padding:24px;
  }
  .search-title{font-size:18px;font-weight:700;color:var(--ink-900);line-height:1.4}
  .search-note{font-size:13px;color:var(--ink-500);margin-top:8px;line-height:1.7}
  .search-field{position:relative;margin-top:16px}
  .search-field input{
    width:100%;height:48px;border-radius:var(--r-md);
    border:1px solid #D7E1F0;background:#fff;
    padding:0 46px 0 16px;font-size:15px;color:var(--ink-900);
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .search-field input::placeholder{color:var(--ink-300)}
  .search-field input[readonly]{cursor:default;background:var(--brand-50)}
  .search-field i{
    position:absolute;right:16px;top:50%;transform:translateY(-50%);
    color:var(--ink-300);font-size:15px;pointer-events:none;
  }
  .hot-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
  .hot-tags a{
    font-size:13px;color:var(--ink-700);background:var(--brand-50);
    border:1px solid var(--line);border-radius:var(--r-pill);padding:6px 12px;
    transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  }
  .hot-tags a:hover{background:var(--brand-100);color:var(--brand-600);border-color:#D3E0F5}

  /* ============ 锚点胶囊栏 ============ */
  .anchor-bar{
    display:flex;gap:10px;overflow-x:auto;padding:4px 0 8px;
    -webkit-overflow-scrolling:touch;scrollbar-width:none;
  }
  .anchor-bar::-webkit-scrollbar{display:none}
  .anchor-bar a{
    flex:0 0 auto;font-size:14px;color:var(--ink-700);background:#fff;
    border:1px solid var(--line);border-radius:var(--r-pill);padding:10px 18px;
    transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
  }
  .anchor-bar a:hover{background:var(--brand-50);color:var(--brand-600);border-color:var(--brand-500);transform:translateY(-1px)}

  /* ============ 区块 ============ */
  .section{padding:56px 0}
  @media (min-width:1024px){ .section{padding:88px 0} }
  .section-head{max-width:760px;margin-bottom:32px}
  .section-head h2{font-size:22px;line-height:1.28;font-weight:700;color:var(--ink-900)}
  @media (min-width:1024px){ .section-head h2{font-size:28px} }
  .section-head p{margin-top:12px;font-size:16px;line-height:1.8;color:var(--ink-500)}

  /* ============ 手风琴 FAQ ============ */
  .acc-group + .acc-group{margin-top:40px}
  .acc-group-head{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding-bottom:14px;border-bottom:1px solid var(--line);
  }
  .acc-group-head h3{
    display:flex;align-items:center;gap:10px;
    font-size:18px;font-weight:600;color:var(--ink-900);line-height:1.4;
  }
  @media (min-width:768px){ .acc-group-head h3{font-size:20px} }
  .acc-group-head h3 i{color:var(--cloud-500);font-size:17px}
  .count-tag{
    flex:0 0 auto;font-size:12px;font-weight:600;letter-spacing:.02em;
    color:var(--cloud-700);background:var(--cloud-50);
    border-radius:var(--r-pill);padding:4px 10px;font-variant-numeric:tabular-nums;
  }
  .acc-list{margin-top:16px;display:grid;gap:12px}
  .acc{
    background:#fff;border:1px solid var(--line);border-radius:14px;
    overflow:hidden;
    transition:background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .acc:hover{border-color:#D3E0F5}
  .acc[open]{background:var(--brand-50);border-color:#D3E0F5;box-shadow:var(--sh-1)}
  .acc summary{
    position:relative;list-style:none;cursor:pointer;
    padding:18px 60px 18px 20px;
    font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.6;
  }
  .acc summary::-webkit-details-marker{display:none}
  .acc summary::after{
    content:"+";position:absolute;right:18px;top:18px;
    width:26px;height:26px;line-height:24px;text-align:center;
    border-radius:50%;font-size:18px;font-weight:600;
    color:var(--ink-500);background:var(--surface);
    transition:transform .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
  }
  .acc[open] summary{box-shadow:inset 3px 0 0 var(--brand-600)}
  .acc[open] summary::after{transform:rotate(45deg);color:var(--brand-600);background:var(--brand-100)}
  .acc-body{
    padding:0 20px 18px 20px;
    font-size:15px;line-height:1.8;color:var(--ink-500);
    animation:fadeDown .24s var(--ease);
  }
  @keyframes fadeDown{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

  /* ============ 快捷入口横条 ============ */
  .quick-list{display:grid;gap:14px}
  .quick-item{
    display:flex;align-items:center;gap:16px;
    min-height:84px;padding:16px 20px;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
    box-shadow:var(--sh-1);
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .quick-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D3E0F5}
  .quick-icon{
    flex:0 0 44px;width:44px;height:44px;border-radius:var(--r-md);
    display:grid;place-items:center;font-size:18px;
    background:var(--brand-100);color:var(--brand-600);
  }
  .quick-item:nth-child(2) .quick-icon{background:var(--cloud-50);color:var(--cloud-700)}
  .quick-item:nth-child(3) .quick-icon{background:var(--accent-50);color:var(--accent-700)}
  .quick-text{min-width:0}
  .quick-text h3{font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.4}
  .quick-text p{margin-top:2px;font-size:14px;line-height:1.6;color:var(--ink-500)}
  .quick-arrow{margin-left:auto;color:var(--brand-600);font-size:15px;transition:transform .2s var(--ease)}
  .quick-item:hover .quick-arrow{transform:translateX(4px)}

  /* ============ 联系支持 ============ */
  .support-card{
    display:grid;background:#fff;border:1px solid var(--line);
    border-radius:var(--r-xl);box-shadow:var(--sh-2);overflow:hidden;
  }
  @media (min-width:1024px){ .support-card{grid-template-columns:1fr 1fr} }
  .support-info{padding:24px}
  @media (min-width:1024px){ .support-info{padding:28px} }
  .support-media{
    border-radius:var(--r-lg);overflow:hidden;background:linear-gradient(135deg,#EEF4FF,#E3EDFC);
    aspect-ratio:16/9;
  }
  .support-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
  .support-media:hover img{transform:scale(1.04)}

  .info-list{display:grid;gap:14px;margin-top:20px}
  .info-item{display:flex;gap:12px;align-items:flex-start}
  .info-item i{color:var(--brand-600);font-size:15px;margin-top:5px;flex:0 0 auto}
  .info-item strong{display:block;font-size:14px;font-weight:600;color:var(--ink-900);line-height:1.5}
  .info-item span{display:block;font-size:14px;color:var(--ink-500);line-height:1.7}

  .support-form{
    padding:24px;background:var(--brand-50);
    border-top:1px solid var(--line);
  }
  @media (min-width:1024px){
    .support-form{padding:28px;border-top:0;border-left:1px solid var(--line)}
  }
  .support-form h3{font-size:18px;font-weight:600;color:var(--ink-900);line-height:1.4;margin-bottom:18px}

  .field{margin-bottom:16px}
  .field label{display:block;font-size:13px;font-weight:500;color:var(--ink-700);margin-bottom:6px}
  .field .req{color:var(--accent-500);margin-left:2px}
  .field input,.field select,.field textarea{
    width:100%;border:1px solid #D7E1F0;border-radius:var(--r-md);
    background:#fff;font-size:15px;color:var(--ink-900);
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .field input,.field select{height:48px;padding:0 16px}
  .field textarea{min-height:96px;padding:13px 16px;line-height:1.7;resize:vertical}
  .field input::placeholder,.field textarea::placeholder{color:var(--ink-300)}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:var(--brand-500);
    box-shadow:0 0 0 3px rgba(46,107,230,.18);
  }
  .form-hint{
    margin-top:12px;font-size:13px;line-height:1.6;
    color:var(--cloud-700);background:var(--cloud-50);
    border-radius:var(--r-md);padding:10px 14px;
  }
  .back-top-row{display:flex;justify-content:center;margin-top:32px}

  /* ============ CTA 条 ============ */
  .cta-strip{
    position:relative;overflow:hidden;background:var(--brand-600);
    padding:56px 0;
  }
  @media (min-width:1024px){ .cta-strip{padding:72px 0} }
  .cta-strip::after{
    content:"";position:absolute;right:-90px;top:-120px;width:360px;height:360px;
    border-radius:50%;pointer-events:none;
    background:radial-gradient(circle, rgba(20,163,176,.38), rgba(20,163,176,0) 70%);
  }
  .cta-inner{position:relative;display:grid;gap:26px;align-items:center}
  @media (min-width:1024px){ .cta-inner{grid-template-columns:1.4fr .6fr;gap:40px} }
  .cta-strip h2{font-size:22px;line-height:1.3;font-weight:700;color:#fff}
  @media (min-width:1024px){ .cta-strip h2{font-size:28px} }
  .cta-strip p{margin-top:12px;font-size:16px;line-height:1.8;color:rgba(255,255,255,.82);max-width:640px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}
  @media (min-width:1024px){ .cta-actions{justify-content:flex-end} }

  /* ============ 页脚 ============ */
  .site-footer{
    position:relative;z-index:1;background:#0F1B2D;
    color:rgba(255,255,255,.72);
    padding:56px 0 28px;
  }
  @media (max-width:767px){ .site-footer{padding-bottom:104px} }
  .footer-grid{display:grid;gap:32px}
  @media (min-width:640px){ .footer-grid{grid-template-columns:repeat(2,1fr)} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr} }

  .footer-brand .logo-text strong{color:#fff}
  .footer-brand .logo-text em{color:rgba(255,255,255,.5);display:block}
  .footer-brand .logo-mark{background:rgba(46,107,230,.18)}
  .footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;max-width:340px}
  .contact{display:grid;gap:8px;margin-top:16px;font-size:13.5px}
  .contact i{color:#5B8DEF;margin-right:6px}

  .site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px;letter-spacing:.01em}
  .footer-list{display:grid;gap:10px}
  .footer-list a{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s var(--ease)}
  .footer-list a:hover{color:#fff}

  .footer-bottom{
    margin-top:40px;padding-top:18px;
    border-top:1px solid rgba(255,255,255,.12);
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-size:13px;color:rgba(255,255,255,.55);line-height:1.7;
  }

  /* ============ 移动端底部 Tab ============ */
  .mobile-tab{
    position:fixed;left:0;right:0;bottom:0;z-index:50;
    display:flex;background:#fff;border-top:1px solid var(--line);
    height:calc(58px + env(safe-area-inset-bottom));
    padding-bottom:env(safe-area-inset-bottom);
    box-shadow:0 -2px 12px -6px rgba(15,27,45,.18);
  }
  @media (min-width:768px){ .mobile-tab{display:none} }
  .tab-item{
    position:relative;flex:1 1 0;min-width:0;
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;
    font-size:11px;color:var(--ink-500);
    transition:color .2s var(--ease);
  }
  .tab-item i{
    font-size:16px;width:34px;height:24px;
    display:grid;place-items:center;border-radius:12px;
    transition:background .2s var(--ease),color .2s var(--ease);
  }
  .tab-item span{
    max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:0 2px;
  }
  .tab-item.is-active{color:var(--brand-600);font-weight:600}
  .tab-item.is-active i{background:var(--brand-100);color:var(--brand-600)}
  .tab-item.is-active::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:22px;height:3px;border-radius:0 0 3px 3px;background:var(--brand-600);
  }
  .tab-item:active{color:var(--brand-900)}