/* roulang page: index */
:root{
  --c-brand:#1657C8;
  --c-brand-700:#0F3F97;
  --c-brand-50:#EAF1FE;
  --c-accent:#FF7A1A;
  --c-accent-50:#FFF2E6;
  --c-data:#0E9F6E;
  --c-ink:#0D1B2E;
  --c-ink-2:#46586F;
  --c-ink-3:#7C8CA3;
  --c-bg:#F5F7FB;
  --c-surface:#FFFFFF;
  --c-line:#E4EAF3;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Inter",system-ui,-apple-system,sans-serif;
  --shadow-1:0 2px 8px rgba(13,27,46,.06);
  --shadow-2:0 10px 28px rgba(13,27,46,.08);
  --shadow-3:0 18px 48px rgba(13,27,46,.12);
  --r-card:14px;
  --r-lg:20px;
  --r-btn:10px;
  --r-pill:999px;
  --bs-primary:#1657C8;
  --bs-primary-rgb:22,87,200;
  --bs-body-color:#46586F;
  --bs-body-font-family:var(--font-sans);
  --bs-border-color:#E4EAF3;
  --bs-link-color:#1657C8;
  --bs-link-hover-color:#FF7A1A;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-brand);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--c-accent)}
h1,h2,h3,h4{color:var(--c-ink);margin:0;line-height:1.3;font-weight:700}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
button{font-family:inherit}
:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(22,87,200,.25);border-radius:6px}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 48px}
@media (min-width:1400px){.wrap{max-width:1280px}}
@media (max-width:1199.98px){.wrap{padding:0 32px}}
@media (max-width:767.98px){.wrap{padding:0 20px}}

.section{padding:88px 0}
.section-sm{padding:64px 0}
@media (max-width:991.98px){.section{padding:64px 0}.section-sm{padding:48px 0}}
@media (max-width:767.98px){.section{padding:48px 0}.section-sm{padding:40px 0}}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.sec-head h2{font-size:30px;font-weight:700;letter-spacing:0}
.sec-head .sec-desc{margin-top:10px;font-size:15px;color:var(--c-ink-3);max-width:640px}
@media (max-width:767.98px){.sec-head h2{font-size:22px}.sec-head{margin-bottom:24px}}

.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-brand);font-weight:500;font-size:15px;white-space:nowrap}
.link-arrow i{font-style:normal;transition:transform .18s ease}
.link-arrow:hover{color:var(--c-accent)}
.link-arrow:hover i{transform:translateX(3px)}

.chip-tag{
  display:inline-block;padding:3px 12px;border-radius:var(--r-pill);
  background:var(--c-brand-50);color:var(--c-brand);
  font-size:12px;font-weight:500;line-height:1.7;white-space:nowrap;
}
.chip-tag.chip-accent{background:var(--c-accent-50);color:#C2560A}
.news-date{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:13px;color:var(--c-ink-3)}

/* 按钮 */
.btn{font-weight:500;border-radius:var(--r-btn);transition:all .18s ease;border-width:1.5px}
.btn:focus,.btn:focus-visible{box-shadow:0 0 0 4px rgba(22,87,200,.25)}
.btn-accent{background:var(--c-accent);border-color:var(--c-accent);color:#fff;padding:11px 24px}
.btn-accent:hover,.btn-accent:focus{background:#E86A0C;border-color:#E86A0C;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-accent:active{transform:translateY(1px);box-shadow:none}
.btn-outline-brand{background:transparent;border:1.5px solid var(--c-brand);color:var(--c-brand);padding:11px 24px}
.btn-outline-brand:hover,.btn-outline-brand:focus{background:var(--c-brand-50);color:var(--c-brand);border-color:var(--c-brand)}
.btn-outline-brand:active{transform:translateY(1px)}
.btn-sm{padding:8px 18px;font-size:14px}
.btn-lg{padding:14px 30px;font-size:16px}

/* 公告条 */
.notice-bar{background:var(--c-brand-700);color:#fff;font-size:14px}
.notice-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px}
.notice-text{opacity:.94;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.notice-close{background:transparent;border:0;color:rgba(255,255,255,.8);font-size:20px;line-height:1;cursor:pointer;padding:4px 8px;border-radius:6px}
.notice-close:hover{color:#fff;background:rgba(255,255,255,.12)}

/* 导航 */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--c-line);transition:box-shadow .22s ease,border-color .22s ease}
.site-header.scrolled{box-shadow:var(--shadow-1);border-bottom-color:transparent}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px;transition:height .22s ease}
.site-header.scrolled .nav-wrap{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--c-brand);color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--font-num);font-size:14px;font-weight:700;letter-spacing:.02em}
.brand-name{font-size:19px;font-weight:800;color:var(--c-ink);white-space:nowrap}
.brand:hover .brand-name{color:var(--c-brand)}
.nav-chips{display:flex;align-items:center;gap:8px;margin-left:8px}
.chip{padding:8px 16px;border-radius:var(--r-pill);background:var(--c-brand-50);color:var(--c-brand);font-size:14px;font-weight:500;line-height:1.4;transition:all .18s ease;white-space:nowrap}
.chip:hover{background:#DCE8FD;color:var(--c-brand-700)}
.chip.active{background:var(--c-brand);color:#fff}
.chip.active:hover{background:var(--c-brand-700);color:#fff}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:42px;height:42px;border-radius:var(--r-btn);border:1px solid var(--c-line);background:#fff;color:var(--c-ink);font-size:20px;line-height:1;cursor:pointer}
.nav-toggle:hover{background:var(--c-brand-50);color:var(--c-brand)}
.mobile-drawer{display:none}
@media (max-width:991.98px){
  .nav-chips{display:none}
  .nav-actions .btn{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .mobile-drawer{display:block;overflow:hidden;max-height:0;transition:max-height .28s ease;border-top:0 solid var(--c-line)}
  .mobile-drawer.open{max-height:320px;border-top:1px solid var(--c-line)}
  .mobile-drawer .drawer-inner{padding:16px 20px 20px;display:flex;flex-direction:column;gap:10px}
  .mobile-drawer .chip{width:100%;text-align:center;padding:12px 16px}
  .mobile-drawer .btn{width:100%;margin-top:4px}
}

/* Hero */
.hero{position:relative;background:#fff;padding:76px 0 72px;overflow:hidden}
.hero::after{
  content:"";position:absolute;right:-160px;bottom:-220px;width:620px;height:620px;border-radius:50%;
  background:radial-gradient(circle,rgba(22,87,200,.06) 0 38%,rgba(22,87,200,.045) 38% 62%,rgba(22,87,200,.03) 62% 100%);
  pointer-events:none;
}
.hero .wrap{position:relative;z-index:1}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-pill);background:var(--c-brand-50);color:var(--c-brand);font-size:13px;font-weight:500;margin-bottom:20px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent)}
.hero h1{font-size:40px;font-weight:800;line-height:1.28;letter-spacing:0}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.85;color:var(--c-ink-2);max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-trust{display:flex;flex-wrap:wrap;gap:26px;margin-top:32px;padding-top:24px;border-top:1px solid var(--c-line)}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-ink-2)}
.hero-trust svg{flex:0 0 auto;color:var(--c-data)}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--shadow-2)}
.hero-float{position:absolute;right:-14px;bottom:-18px;background:#fff;border-radius:var(--r-card);box-shadow:var(--shadow-2);padding:16px 20px;min-width:184px}
.hero-float strong{display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:26px;font-weight:700;color:var(--c-data);line-height:1.2}
.hero-float span{font-size:13px;color:var(--c-ink-3)}
@media (max-width:991.98px){
  .hero{padding:48px 0 56px}
  .hero h1{font-size:28px}
  .hero-sub{font-size:15px}
  .hero-media{margin-top:12px}
  .hero-float{right:12px;bottom:12px}
}
@media (max-width:575.98px){
  .hero-cta .btn{width:100%;text-align:center}
  .hero-trust{gap:14px}
}

/* 痛点区 */
.pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px 40px}
.pain-item{padding-left:18px;border-left:3px solid var(--c-accent)}
.pain-item h3{font-size:18px;font-weight:600;margin-bottom:8px}
.pain-item p{font-size:15px;color:var(--c-ink-2);line-height:1.85}
@media (max-width:767.98px){.pain-grid{grid-template-columns:1fr;gap:24px}}

/* 方案卡片 */
.plan-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--shadow-1);overflow:hidden;height:100%;transition:all .2s ease;display:flex;flex-direction:column}
.plan-card:hover{box-shadow:var(--shadow-2);transform:translateY(-4px);border-color:transparent}
.plan-card .media{overflow:hidden}
.plan-card .media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease}
.plan-card:hover .media img{transform:scale(1.03)}
.plan-card .body{padding:26px;display:flex;flex-direction:column;gap:14px;flex:1}
.plan-card h3{font-size:20px;font-weight:600}
.plan-card ul{display:flex;flex-direction:column;gap:8px;margin-top:2px}
.plan-card ul li{position:relative;padding-left:20px;font-size:14px;color:var(--c-ink-2)}
.plan-card ul li::before{content:"✓";position:absolute;left:0;top:0;color:var(--c-data);font-weight:700;font-size:13px}
.plan-card .foot{margin-top:auto;padding-top:6px}
.plan-card-lg{flex-direction:row}
.plan-card-lg .media{flex:0 0 46%;position:relative}
.plan-card-lg .media img{height:100%;aspect-ratio:auto;min-height:260px}
.plan-card-lg .body{padding:30px}
@media (max-width:991.98px){
  .plan-card-lg{flex-direction:column}
  .plan-card-lg .media{flex:none}
  .plan-card-lg .media img{aspect-ratio:16/9;min-height:0}
}
@media (max-width:575.98px){
  .plan-card .body{padding:20px}
  .plan-card-lg .body{padding:22px}
}

/* 数据区 */
.data-band{background:var(--c-brand-700);color:#fff;padding:64px 0}
.data-band h2{color:#fff;font-size:24px;margin-bottom:8px}
.data-band .band-desc{color:rgba(255,255,255,.72);font-size:14px;max-width:560px}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-top:36px}
.data-item{border-left:1px solid rgba(255,255,255,.2);padding-left:24px}
.data-item:first-child{border-left:0;padding-left:0}
.data-item .num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:48px;font-weight:700;line-height:1.05;color:#fff}
.data-item .num small{font-size:18px;font-weight:500;margin-left:4px}
.data-item .cap{margin-top:10px;font-size:13px;color:rgba(255,255,255,.7);line-height:1.7}
@media (max-width:991.98px){
  .data-grid{grid-template-columns:repeat(2,1fr);gap:28px 24px}
  .data-item{border-left:0;padding-left:0}
  .data-item .num{font-size:32px}
}
@media (max-width:575.98px){
  .data-band{padding:48px 0}
}

/* 最新信息 */
.news-main{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--shadow-1);overflow:hidden;height:100%;transition:all .2s ease}
.news-main:hover{box-shadow:var(--shadow-3);transform:translateY(-4px);border-color:transparent}
.news-main-media{display:block;overflow:hidden}
.news-main-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease}
.news-main:hover .news-main-media img{transform:scale(1.03)}
.news-main-body{padding:26px;display:flex;flex-direction:column;gap:12px}
.news-main-body h3{font-size:20px;font-weight:600;line-height:1.5}
.news-main-body h3 a{color:var(--c-ink)}
.news-main-body h3 a:hover{color:var(--c-brand)}
.news-main-body p{font-size:15px;color:var(--c-ink-2);line-height:1.85;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:4px}
.news-list{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--shadow-1);padding:8px 24px;height:100%;display:flex;flex-direction:column;justify-content:center}
.news-list li{display:flex;align-items:center;gap:12px;padding:18px 0;border-bottom:1px solid var(--c-line)}
.news-list li:last-child{border-bottom:0}
.news-list .news-list-title{font-size:15px;color:var(--c-ink);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1;min-width:0}
.news-list .news-list-title:hover{color:var(--c-brand)}
.news-list .news-date{flex:0 0 auto}
.news-list .chip-tag{flex:0 0 auto}
.chip-sm{padding:2px 10px;font-size:12px}
.news-empty{height:160px;border-radius:var(--r-card);background:var(--c-brand-50);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;color:var(--c-brand);font-size:14px}
.news-empty svg{opacity:.7}
@media (max-width:991.98px){
  .news-list{margin-top:24px}
}
@media (max-width:575.98px){
  .news-list{padding:4px 18px}
  .news-list li{flex-wrap:wrap;gap:8px}
  .news-list .news-list-title{white-space:normal;flex:1 1 100%;order:3}
}

/* 表单 */
.form-band{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--shadow-1);padding:36px}
.form-band h2{font-size:24px;margin-bottom:8px}
.form-band .form-hint{font-size:14px;color:var(--c-ink-3);margin-bottom:26px}
.form-label{font-size:14px;font-weight:500;color:var(--c-ink);margin-bottom:8px}
.form-control,.form-select{height:44px;border:1px solid var(--c-line);border-radius:var(--r-btn);font-size:15px;color:var(--c-ink);background:#fff;padding:0 14px}
.form-control::placeholder{color:#A9B6C7}
.form-control:focus,.form-select:focus{border-color:var(--c-brand);box-shadow:0 0 0 4px rgba(22,87,200,.16);color:var(--c-ink)}
.form-status{margin-top:16px;font-size:14px;color:var(--c-data);display:none}
.form-status.show{display:block}
.privacy-note{margin-top:16px;font-size:13px;color:var(--c-ink-3);line-height:1.75}
.privacy-note a{color:var(--c-brand);text-decoration:underline}
@media (max-width:767.98px){.form-band{padding:24px 20px}}

/* 悬浮咨询 */
.float-consult{position:fixed;right:28px;bottom:28px;z-index:1040;display:inline-flex;align-items:center;gap:8px;height:48px;padding:0 22px;border-radius:var(--r-pill);background:var(--c-accent);color:#fff;border:0;font-size:15px;font-weight:500;box-shadow:var(--shadow-2);cursor:pointer;transition:all .18s ease}
.float-consult:hover{background:#E86A0C;transform:translateY(-2px);box-shadow:var(--shadow-3);color:#fff}
.float-consult:active{transform:translateY(0)}
@media (max-width:767.98px){
  .float-consult{right:16px;bottom:16px;height:44px;padding:0 18px;font-size:14px}
}

/* FAQ */
.faq-item{border-top:1px solid var(--c-line)}
.faq-item:last-child{border-bottom:1px solid var(--c-line)}
.faq-q{width:100%;background:transparent;border:0;text-align:left;padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:16px;font-weight:600;color:var(--c-ink);cursor:pointer;transition:color .18s ease}
.faq-q:hover{color:var(--c-brand)}
.faq-q .faq-icon{flex:0 0 auto;width:24px;height:24px;border-radius:50%;background:var(--c-brand-50);color:var(--c-brand);display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:500;font-family:var(--font-num)}
.faq-q .faq-icon::before{content:"−"}
.faq-q.collapsed .faq-icon::before{content:"+"}
.faq-q.collapsed .faq-icon{background:var(--c-brand-50);color:var(--c-brand)}
.faq-a{padding:0 0 22px;font-size:15px;line-height:1.9;color:var(--c-ink-2);max-width:640px}

/* CTA 条 */
.cta-band{background:var(--c-brand-50);border-radius:var(--r-lg);padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{font-size:24px;margin-bottom:8px}
.cta-band p{font-size:15px;color:var(--c-ink-2)}
@media (max-width:767.98px){.cta-band{padding:30px 24px}}

/* 页脚 */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.8);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px}
.site-footer p,.site-footer li,.site-footer a{font-size:14px;line-height:1.95;color:rgba(255,255,255,.8)}
.site-footer a:hover{color:var(--c-accent)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--c-brand)}
.footer-brand .brand-name{color:#fff;font-size:18px;font-weight:800}
.footer-links{display:flex;flex-direction:column;gap:4px}
.footer-bottom{margin-top:48px;border-top:1px solid rgba(255,255,255,.14);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.6)}
.footer-bottom a{font-size:13px;color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:var(--c-accent)}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:575.98px){
  .site-footer{padding:48px 0 0}
  .footer-grid{grid-template-columns:1fr}
}

/* 弹层 */
.modal-backdrop.show{opacity:.45}
.modal-backdrop{background:#0D1B2E}
.modal-content{border:0;border-radius:var(--r-lg);box-shadow:var(--shadow-3);overflow:hidden}
.modal-topbar{height:4px;background:var(--c-accent)}
.modal-body{padding:32px}
.modal-body h3{font-size:20px;margin-bottom:8px}
.modal-body .modal-sub{font-size:14px;color:var(--c-ink-3);margin-bottom:22px}
.modal-header{border:0;padding:0}
.modal-close{position:absolute;right:16px;top:16px;width:34px;height:34px;border-radius:50%;border:0;background:rgba(13,27,46,.06);color:var(--c-ink-2);font-size:18px;line-height:1;cursor:pointer;z-index:2}
.modal-close:hover{background:rgba(13,27,46,.12);color:var(--c-ink)}
@media (max-width:575.98px){
  .modal-body{padding:24px 20px}
  .modal-dialog{margin:0;position:fixed;left:0;right:0;bottom:0}
  .modal-content{border-radius:20px 20px 0 0}
  .modal-dialog-centered{min-height:auto}
}

/* roulang page: category1 */
:root{
  --c-brand:#1657C8;
  --c-brand-700:#0F3F97;
  --c-brand-50:#EAF1FE;
  --c-accent:#FF7A1A;
  --c-accent-700:#E96A0C;
  --c-accent-50:#FFF2E6;
  --c-data:#0E9F6E;
  --c-ink:#0D1B2E;
  --c-ink-2:#46586F;
  --c-ink-3:#7C8CA3;
  --c-bg:#F5F7FB;
  --c-surface:#FFFFFF;
  --c-line:#E4EAF3;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Inter",system-ui,sans-serif;
  --shadow-1:0 2px 8px rgba(13,27,46,.06);
  --shadow-2:0 10px 28px rgba(13,27,46,.08);
  --shadow-3:0 18px 48px rgba(13,27,46,.12);
  --r-card:14px;
  --r-lg:20px;
  --r-btn:10px;
  --r-chip:999px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
h1,h2,h3,h4{color:var(--c-ink);margin:0;line-height:1.3;font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 48px;}
@media (min-width:1400px){.wrap{max-width:1280px;}}
:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(22,87,200,.25);border-radius:6px;}

/* ===== 顶部公告条 ===== */
.topbar{
  background:var(--c-brand-700);
  color:#fff;
  font-size:14px;
}
.topbar .wrap{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:44px;
}
.topbar p{margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-close{
  flex:0 0 auto;background:transparent;border:0;color:rgba(255,255,255,.8);
  font-size:16px;line-height:1;cursor:pointer;padding:6px 8px;border-radius:8px;
}
.topbar-close:hover{color:#fff;background:rgba(255,255,255,.12);}
@media (max-width:575px){.topbar p{font-size:13px;}}

/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.header-inner{
  display:flex;align-items:center;gap:24px;
  height:72px;transition:height .2s ease;
}
.site-header.is-scrolled .header-inner{height:60px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--c-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-weight:800;font-size:15px;letter-spacing:.5px;
}
.logo-text{font-size:18px;font-weight:700;color:var(--c-ink);white-space:nowrap;}
.nav-chips{display:flex;align-items:center;gap:8px;margin-left:8px;}
.chip{
  display:inline-flex;align-items:center;
  padding:8px 16px;border-radius:var(--r-chip);
  background:var(--c-brand-50);color:var(--c-brand);
  font-size:14px;font-weight:500;line-height:1.4;white-space:nowrap;
  border:1px solid transparent;
}
.chip:hover{background:#DCE7FB;color:var(--c-brand-700);}
.chip.active{background:var(--c-brand);color:#fff;box-shadow:var(--shadow-1);}
.chip.active:hover{background:var(--c-brand-700);color:#fff;}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;line-height:1;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .16s ease,box-shadow .16s ease,background-color .16s ease,color .16s ease,border-color .16s ease;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--c-accent-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-outline{background:transparent;color:var(--c-brand);border-color:var(--c-brand);}
.btn-outline:hover{background:var(--c-brand-50);color:var(--c-brand-700);transform:translateY(-1px);}
.btn-lg{height:48px;padding:0 26px;font-size:16px;}
.btn-sm{height:32px;padding:0 14px;font-size:14px;}
.link-cta{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-brand);font-weight:500;font-size:15px;
}
.link-cta .arrow{transition:transform .18s ease;}
.link-cta:hover{color:var(--c-accent);}
.link-cta:hover .arrow{transform:translateX(3px);}

.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  background:var(--c-brand-50);border:1px solid var(--c-line);
  flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-brand);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.mobile-drawer{
  display:none;
  border-top:1px solid var(--c-line);
  background:var(--c-surface);
  padding:16px 0 22px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .wrap{display:flex;flex-direction:column;gap:10px;}
.mobile-drawer .chip{width:100%;justify-content:center;padding:12px 16px;border-radius:10px;}
.mobile-drawer .btn{width:100%;height:46px;margin-top:6px;}

@media (max-width:991px){
  .nav-chips{display:none;}
  .nav-toggle{display:flex;}
  .header-actions .btn{display:none;}
  .wrap{padding:0 32px;}
}
@media (max-width:575px){
  .wrap{padding:0 20px;}
  .logo-text{font-size:16px;}
}

/* ===== Banner ===== */
.cat-banner{
  background:var(--c-brand-50);
  position:relative;
  overflow:hidden;
}
.cat-banner::after{
  content:"";
  position:absolute;right:-80px;bottom:-120px;width:320px;height:320px;
  border:1px solid rgba(22,87,200,.10);border-radius:50%;
}
.banner-inner{
  display:grid;grid-template-columns:1.15fr .85fr;gap:40px;
  align-items:center;min-height:180px;padding-top:26px;padding-bottom:26px;
  position:relative;z-index:1;
}
.breadcrumb-line{
  display:flex;align-items:center;gap:8px;
  font-size:14px;color:var(--c-ink-3);margin-bottom:12px;
}
.breadcrumb-line a{color:var(--c-ink-3);}
.breadcrumb-line a:hover{color:var(--c-brand);}
.breadcrumb-line .sep{opacity:.55;}
.banner-copy h1{
  font-size:40px;font-weight:800;letter-spacing:0;
  margin-bottom:12px;
}
.banner-copy p{font-size:16px;color:var(--c-ink-2);max-width:560px;}
.banner-media{
  border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--shadow-1);aspect-ratio:16/7;
}
.banner-media img{width:100%;height:100%;object-fit:cover;}
@media (max-width:991px){
  .banner-inner{grid-template-columns:1fr;gap:20px;min-height:auto;padding-top:24px;padding-bottom:28px;}
  .banner-copy h1{font-size:30px;}
  .banner-media{aspect-ratio:16/6;}
}
@media (max-width:575px){
  .cat-banner{min-height:140px;}
  .banner-copy h1{font-size:26px;}
  .banner-media{display:none;}
}

/* ===== 区块通用 ===== */
.section{padding:88px 0;}
.section-tight{padding:56px 0;}
.section-head{max-width:720px;margin-bottom:40px;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:var(--c-brand);
  background:var(--c-brand-50);border-radius:var(--r-chip);
  padding:4px 12px;margin-bottom:14px;
}
.section-head h2{font-size:30px;font-weight:700;}
.section-head p{margin-top:14px;font-size:16px;color:var(--c-ink-2);}
@media (max-width:767px){
  .section{padding:64px 0;}
  .section-tight{padding:40px 0;}
  .section-head h2{font-size:22px;}
  .section-head{margin-bottom:28px;}
}
@media (max-width:575px){
  .section{padding:48px 0;}
}

/* ===== 分类导语 ===== */
.cat-lead{
  max-width:860px;
  font-size:17px;
  line-height:1.9;
  color:var(--c-ink-2);
}
.cat-lead p + p{margin-top:14px;}
.lead-meta{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;
}
.tag{
  display:inline-flex;align-items:center;
  font-size:13px;color:var(--c-ink-2);
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-chip);padding:5px 14px;
}

/* ===== 图文交替 ===== */
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);padding:36px;
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.feature-row:hover{box-shadow:var(--shadow-2);transform:translateY(-4px);border-color:transparent;}
.feature-row + .feature-row{margin-top:32px;}
.feature-row.reverse .feature-copy{order:2;}
.feature-row.reverse .feature-media{order:1;}
.feature-copy h2{font-size:26px;margin-bottom:14px;}
.feature-copy p{font-size:16px;line-height:1.85;color:var(--c-ink-2);}
.feature-media{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-1);}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease;}
.feature-row:hover .feature-media img{transform:scale(1.03);}
.check-list{margin:20px 0 24px;}
.check-list li{
  position:relative;padding-left:24px;font-size:15px;color:var(--c-ink-2);
  line-height:1.9;
}
.check-list li::before{
  content:"✓";position:absolute;left:0;top:0;color:var(--c-data);font-weight:700;
}
@media (max-width:991px){
  .feature-row{grid-template-columns:1fr;gap:26px;padding:26px;}
  .feature-row.reverse .feature-copy{order:1;}
  .feature-row.reverse .feature-media{order:2;}
  .feature-copy h2{font-size:22px;}
}

/* ===== 特性块 2×2（左侧色条式） ===== */
.trait-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.trait{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-left:3px solid var(--c-accent);
  border-radius:var(--r-card);
  padding:26px 28px;
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.trait:hover{box-shadow:var(--shadow-2);transform:translateY(-4px);border-color:transparent;border-left-color:var(--c-accent);}
.trait h3{font-size:19px;font-weight:600;margin-bottom:10px;}
.trait p{font-size:15px;line-height:1.85;color:var(--c-ink-2);}
@media (max-width:767px){
  .trait-grid{grid-template-columns:1fr;gap:18px;}
  .trait{padding:22px;}
}

/* ===== 数据条 ===== */
.data-bar{
  background:var(--c-brand-700);
  border-radius:var(--r-lg);
  padding:44px 40px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:32px;
  box-shadow:var(--shadow-2);
}
.data-item{border-left:1px solid rgba(255,255,255,.16);padding-left:24px;}
.data-item:first-child{border-left:0;padding-left:0;}
.data-num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:48px;font-weight:800;color:#fff;line-height:1.1;
}
.data-num span{font-size:20px;font-weight:600;margin-left:4px;}
.data-label{margin-top:8px;font-size:13px;color:rgba(255,255,255,.74);line-height:1.6;}
@media (max-width:991px){
  .data-bar{grid-template-columns:1fr 1fr;gap:26px;padding:34px 28px;}
  .data-item:nth-child(3){border-left:0;padding-left:0;}
  .data-num{font-size:38px;}
}
@media (max-width:575px){
  .data-bar{padding:28px 22px;gap:22px;}
  .data-num{font-size:32px;}
  .data-num span{font-size:16px;}
}

/* ===== FAQ ===== */
.faq-list{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  padding:6px 30px;
}
.faq-item{border-top:1px solid var(--c-line);}
.faq-item:first-child{border-top:0;}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:16px;font-weight:600;color:var(--c-ink);
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-family:var(--font-num);
  font-size:20px;color:var(--c-brand);transition:transform .2s ease;
}
.faq-item[open] summary{color:var(--c-brand);}
.faq-item[open] summary::after{content:"−";}
.faq-item summary:hover{color:var(--c-brand);}
.faq-body{padding:0 0 22px;font-size:15px;line-height:1.9;color:var(--c-ink-2);max-width:900px;}
@media (max-width:575px){
  .faq-list{padding:4px 20px;}
  .faq-item summary{font-size:15px;padding:16px 0;}
}

/* ===== 表单区 ===== */
.form-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);
  padding:36px;
}
.form-grid{
  display:grid;grid-template-columns:1fr 1fr 1fr auto;gap:20px;align-items:end;
}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:14px;font-weight:500;color:var(--c-ink);}
.field input,.field select{
  height:44px;width:100%;
  padding:0 14px;font-size:15px;font-family:inherit;color:var(--c-ink);
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-btn);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field input::placeholder{color:var(--c-ink-3);}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--c-brand);
  box-shadow:0 0 0 4px rgba(22,87,200,.14);
}
.form-actions{display:flex;}
.form-actions .btn{height:44px;padding:0 28px;}
.form-tip{margin-top:14px;font-size:14px;color:var(--c-data);}
.privacy-note{margin-top:18px;font-size:13px;line-height:1.8;color:var(--c-ink-3);}
.privacy-note a{color:var(--c-brand);text-decoration:underline;}
@media (max-width:991px){
  .form-grid{grid-template-columns:1fr 1fr;gap:18px;}
  .form-actions{grid-column:1 / -1;}
  .form-actions .btn{width:100%;}
}
@media (max-width:575px){
  .form-card{padding:24px 20px;}
  .form-grid{grid-template-columns:1fr;}
}

/* ===== 底部 CTA 条 ===== */
.cta-bar{
  background:var(--c-brand-700);
  border-radius:var(--r-lg);
  padding:40px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:var(--shadow-2);
}
.cta-bar h2{color:#fff;font-size:26px;margin-bottom:10px;}
.cta-bar p{color:rgba(255,255,255,.78);font-size:15px;max-width:620px;}
.cta-actions{display:flex;gap:14px;flex:0 0 auto;}
.cta-actions .btn-outline{color:#fff;border-color:rgba(255,255,255,.6);}
.cta-actions .btn-outline:hover{background:rgba(255,255,255,.14);color:#fff;}
@media (max-width:991px){
  .cta-bar{flex-direction:column;align-items:flex-start;padding:32px 26px;}
  .cta-bar h2{font-size:22px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--c-brand-700);
  color:rgba(255,255,255,.8);
  margin-top:88px;
  padding-top:64px;
  font-size:14px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{
  width:34px;height:34px;border-radius:10px;background:#fff;color:var(--c-brand);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-weight:800;font-size:15px;
}
.footer-brand .brand-name{font-size:17px;font-weight:700;color:#fff;}
.site-footer p{line-height:1.85;color:rgba(255,255,255,.72);}
.site-footer h4{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:rgba(255,255,255,.8);}
.footer-links a:hover{color:var(--c-accent);}
.footer-bottom{
  margin-top:48px;padding:22px 0;
  border-top:1px solid rgba(255,255,255,.16);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.66);
}
.footer-bottom a{color:rgba(255,255,255,.66);}
.footer-bottom a:hover{color:var(--c-accent);}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .site-footer{padding-top:48px;margin-top:64px;}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* 覆盖 Bootstrap 默认观感 */
.btn:focus,.btn:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(22,87,200,.25);}
.btn-primary:focus,.btn-primary:focus-visible{box-shadow:0 0 0 4px rgba(255,122,26,.3);}
a{color:inherit;}

/* roulang page: article */
/* ===================== 设计变量 ===================== */
:root{
  --c-brand:#1657C8;
  --c-brand-700:#0F3F97;
  --c-brand-50:#EAF1FE;
  --c-accent:#FF7A1A;
  --c-accent-700:#E76A0E;
  --c-accent-50:#FFF2E6;
  --c-data:#0E9F6E;
  --c-ink:#0D1B2E;
  --c-ink-2:#46586F;
  --c-ink-3:#7C8CA3;
  --c-bg:#F5F7FB;
  --c-surface:#FFFFFF;
  --c-line:#E4EAF3;
  --shadow-1:0 2px 8px rgba(13,27,46,.06);
  --shadow-2:0 10px 28px rgba(13,27,46,.08);
  --shadow-3:0 18px 48px rgba(13,27,46,.12);
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  --r-card:14px;
  --r-lg:20px;
  --r-btn:10px;
  --r-pill:999px;
  --header-h:72px;
}

/* ===================== 基础 reset ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-accent);}
h1,h2,h3,h4{color:var(--c-ink);line-height:1.3;margin:0;}
p{margin:0 0 1em;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(22,87,200,.35);outline-offset:2px;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{transition:none !important;animation:none !important;}
}

/* ===================== 容器 ===================== */
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 48px;}
@media (min-width:1400px){.wrap{max-width:1280px;}}
@media (max-width:991.98px){.wrap{padding:0 32px;}}
@media (max-width:575.98px){.wrap{padding:0 20px;}}

/* ===================== 头部导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.header-inner{
  display:flex;align-items:center;gap:28px;
  height:var(--header-h);
  transition:height .25s ease;
}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:10px;
  background:var(--c-brand);color:#fff;
  font-family:var(--font-num);font-size:14px;font-weight:800;letter-spacing:.5px;
  display:inline-flex;align-items:center;justify-content:center;
  transition:background .18s ease;
}
.brand-name{font-size:18px;font-weight:800;color:var(--c-ink);white-space:nowrap;}
.brand:hover .brand-name{color:var(--c-brand);}
.brand:hover .brand-mark{background:var(--c-brand-700);}

.nav-chips{display:flex;align-items:center;gap:8px;flex:1 1 auto;margin-left:4px;}
.chip{
  display:inline-flex;align-items:center;justify-content:center;
  padding:8px 16px;border-radius:8px;
  background:var(--c-brand-50);color:var(--c-brand);
  font-size:14px;font-weight:500;white-space:nowrap;
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.chip:hover{background:#DCE8FD;color:var(--c-brand-700);}
.chip.active{background:var(--c-brand);color:#fff;}
.chip.active:hover{background:var(--c-brand-700);color:#fff;}
.chip:active{transform:translateY(1px);}

.header-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto;}

/* ===================== 按钮 ===================== */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  background:var(--c-accent);border:1.5px solid var(--c-accent);color:#fff;
  font-size:15px;font-weight:500;cursor:pointer;
  transition:background .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-main:hover{background:var(--c-accent-700);border-color:var(--c-accent-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-main:active{transform:translateY(1px);box-shadow:none;}
.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  border:1.5px solid var(--c-brand);background:transparent;color:var(--c-brand);
  font-size:15px;font-weight:500;cursor:pointer;
  transition:background .18s ease,color .18s ease,transform .18s ease,border-color .18s ease;
}
.btn-line:hover{background:var(--c-brand-50);color:var(--c-brand-700);border-color:var(--c-brand-700);}
.btn-line:active{transform:translateY(1px);}
.btn-sm{height:36px;padding:0 18px;font-size:14px;}

/* ===================== 移动端导航 ===================== */
.nav-toggle{
  display:none;width:40px;height:40px;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
  border:1px solid var(--c-line);border-radius:10px;background:var(--c-surface);cursor:pointer;
  transition:border-color .18s ease;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);transition:background .18s ease;}
.nav-toggle:hover{border-color:var(--c-brand);}
.nav-toggle:hover span{background:var(--c-brand);}
.drawer-mask{
  position:fixed;inset:0;z-index:1070;
  background:rgba(13,27,46,.45);
  opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;z-index:1080;
  width:290px;max-width:84vw;height:100%;
  padding:24px;display:flex;flex-direction:column;gap:10px;
  background:var(--c-surface);
  border-radius:20px 0 0 20px;
  box-shadow:var(--shadow-3);
  transform:translateX(105%);
  transition:transform .28s cubic-bezier(.4,0,.2,1);
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;}
.drawer-head .brand-name{font-size:16px;}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-ink-2);font-size:18px;line-height:1;cursor:pointer;
  transition:border-color .18s ease,color .18s ease;
}
.drawer-close:hover{border-color:var(--c-brand);color:var(--c-brand);}
.drawer .chip{width:100%;justify-content:flex-start;padding:12px 16px;font-size:15px;border-radius:10px;}
.drawer-cta{margin-top:auto;}
.drawer-cta .btn-main{width:100%;}

@media (max-width:991.98px){
  .nav-chips{display:none;}
  .header-cta .btn-main{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{justify-content:space-between;gap:16px;}
}

/* ===================== 文章头部 ===================== */
.article-hero{background:var(--c-surface);padding:40px 0 36px;border-bottom:1px solid var(--c-line);}
.breadcrumb-nav{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--c-ink-3);margin-bottom:22px;
}
.breadcrumb-nav a{color:var(--c-ink-3);}
.breadcrumb-nav a:hover{color:var(--c-brand);}
.breadcrumb-nav .sep{opacity:.55;}
.breadcrumb-nav .current{color:var(--c-ink-2);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{
  font-size:32px;font-weight:800;line-height:1.3;
  color:var(--c-ink);margin:0 0 20px;max-width:940px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-size:14px;color:var(--c-ink-3);
}
.article-meta .num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#CBD6E6;}
.tag-chip{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-brand-50);color:var(--c-brand);
  font-size:12px;font-weight:500;line-height:1.7;
}
.share-btn{
  margin-left:auto;
  height:32px;padding:0 14px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);background:var(--c-surface);
  color:var(--c-ink-3);font-size:13px;cursor:pointer;
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.share-btn:hover{border-color:var(--c-brand);color:var(--c-brand);background:var(--c-brand-50);}
.share-btn:active{transform:translateY(1px);}

/* ===================== 文章主体布局 ===================== */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr);
  gap:44px;align-items:start;
  padding:44px 0 88px;
}
.article-main{
  width:100%;max-width:800px;margin:0 auto;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  padding:40px;
}
.article-cover{
  margin:0 0 32px;border-radius:12px;overflow:hidden;
  aspect-ratio:1200/630;background:var(--c-brand-50);
}
.article-cover img{width:100%;height:100%;object-fit:cover;}

@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,800px) 280px;justify-content:center;}
  .article-main{max-width:none;margin:0;}
}
@media (max-width:767.98px){
  .article-layout{padding:28px 0 56px;gap:28px;}
  .article-main{padding:24px 20px;border-radius:12px;}
  .article-title{font-size:24px;}
  .article-hero{padding:28px 0 24px;}
  .article-cover{margin-bottom:24px;border-radius:10px;}
  .breadcrumb-nav .current{max-width:200px;}
}

/* ===================== 长文排版 ===================== */
.article-body{font-size:16.5px;line-height:1.95;color:var(--c-ink-2);}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  font-size:22px;font-weight:700;line-height:1.4;color:var(--c-ink);
  margin:2em 0 .75em;padding-left:14px;border-left:4px solid var(--c-accent);
}
.article-body h3{font-size:18px;font-weight:600;color:var(--c-ink);margin:1.7em 0 .55em;}
.article-body h4{font-size:16.5px;font-weight:600;color:var(--c-ink);margin:1.4em 0 .5em;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.5em;line-height:1.9;}
.article-body li{margin-bottom:.45em;}
.article-body blockquote{
  margin:1.6em 0;padding:18px 24px;
  background:var(--c-brand-50);
  border-left:4px solid var(--c-accent);
  border-radius:0 10px 10px 0;
  color:var(--c-ink-2);
}
.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{font-size:13px;color:var(--c-ink-3);text-align:center;margin-top:10px;line-height:1.7;}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;}
.article-body thead th{
  background:var(--c-brand-50);color:var(--c-ink);
  font-weight:600;padding:12px 16px;text-align:left;border:0;
}
.article-body tbody td{padding:12px 16px;border:0;color:var(--c-ink-2);}
.article-body tbody tr:nth-child(even){background:#F7FAFF;}
.article-body a{color:var(--c-brand);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--c-accent);}
.article-body strong{color:var(--c-ink);font-weight:600;}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:2em 0;}

/* ===================== 文章底部 ===================== */
.article-foot{margin-top:40px;padding-top:28px;border-top:1px solid var(--c-line);}
.article-tags{display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.article-tags .label{font-size:13px;color:var(--c-ink-3);margin-right:4px;}

/* ===================== 空态 ===================== */
.empty-state{text-align:center;padding:56px 20px;}
.empty-state svg{width:54px;height:54px;stroke:var(--c-brand);opacity:.5;margin:0 auto 18px;}
.empty-state .empty-title{font-size:17px;font-weight:600;color:var(--c-ink);margin-bottom:8px;}
.empty-state .empty-desc{font-size:14px;color:var(--c-ink-3);margin-bottom:24px;}

/* ===================== 侧栏 ===================== */
.article-side{display:none;}
@media (min-width:1200px){
  .article-side{display:block;position:sticky;top:96px;}
}
.side-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  padding:22px;
  margin-bottom:20px;
}
.side-title{font-size:15px;font-weight:600;color:var(--c-ink);margin:0 0 14px;}
.side-links{display:flex;flex-direction:column;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;font-size:14px;color:var(--c-ink-2);
  border-bottom:1px solid var(--c-line);
}
.side-links a:last-child{border-bottom:0;padding-bottom:0;}
.side-links a::after{content:"→";color:var(--c-brand);font-size:13px;transition:transform .18s ease,color .18s ease;}
.side-links a:hover{color:var(--c-brand);}
.side-links a:hover::after{color:var(--c-accent);transform:translateX(3px);}
.side-meta{margin:0;font-size:14px;}
.side-meta dt{font-size:13px;color:var(--c-ink-3);margin-bottom:2px;}
.side-meta dd{margin:0 0 14px;color:var(--c-ink);font-weight:500;word-break:break-word;}
.side-meta div:last-child dd{margin-bottom:0;}
.side-cta p{font-size:14px;line-height:1.7;color:var(--c-ink-3);margin-bottom:14px;}
.side-cta .btn-main{width:100%;}

/* ===================== 相关内容 ===================== */
.related-section{padding:0 0 88px;}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:24px;}
.section-title{font-size:22px;font-weight:700;color:var(--c-ink);}
.section-title::after{
  content:"";display:block;width:36px;height:3px;border-radius:2px;
  background:var(--c-accent);margin-top:10px;
}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.related-card{
  display:block;overflow:hidden;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  padding-bottom:22px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:transparent;color:inherit;}
.related-card:active{transform:translateY(-1px);}
.related-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--c-brand-50);}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.related-card:hover .related-thumb img{transform:scale(1.03);}
.related-card h3{font-size:17px;font-weight:600;margin:18px 22px 8px;color:var(--c-ink);}
.related-card p{font-size:14px;line-height:1.75;color:var(--c-ink-3);margin:0 22px 14px;}
.text-cta{
  display:inline-block;margin:0 22px;
  font-size:14px;font-weight:500;color:var(--c-brand);
  transition:color .18s ease,transform .18s ease;
}
.related-card:hover .text-cta{color:var(--c-accent);transform:translateX(3px);}
.back-row{margin-top:36px;}
@media (max-width:991.98px){
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .related-section{padding-bottom:56px;}
}
@media (max-width:575.98px){
  .related-grid{grid-template-columns:1fr;}
  .section-title{font-size:20px;}
}

/* ===================== 页脚 ===================== */
.site-footer{background:var(--c-brand-700);color:rgba(255,255,255,.8);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:44px;}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin:0 0 16px;}
.site-footer p{font-size:14px;line-height:1.85;margin:0;color:rgba(255,255,255,.72);}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.16);color:#fff;}
.footer-brand .brand-name{color:#fff;font-size:17px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:rgba(255,255,255,.8);font-size:14px;transition:color .18s ease;}
.footer-links a:hover{color:var(--c-accent);}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:20px 0;border-top:1px solid rgba(255,255,255,.14);
  font-size:13px;color:rgba(255,255,255,.62);
}
.footer-bottom a{color:rgba(255,255,255,.75);}
.footer-bottom a:hover{color:var(--c-accent);}
@media (max-width:991.98px){
  .site-footer{padding-top:48px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding-bottom:32px;}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category2 */
:root{
  --c-brand:#1657C8;
  --c-brand-700:#0F3F97;
  --c-brand-50:#EAF1FE;
  --c-accent:#FF7A1A;
  --c-accent-50:#FFF2E6;
  --c-data:#0E9F6E;
  --c-ink:#0D1B2E;
  --c-ink-2:#46586F;
  --c-ink-3:#7C8CA3;
  --c-bg:#F5F7FB;
  --c-surface:#FFFFFF;
  --c-line:#E4EAF3;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Inter",system-ui,-apple-system,sans-serif;
  --shadow-1:0 2px 8px rgba(13,27,46,.06);
  --shadow-2:0 10px 28px rgba(13,27,46,.08);
  --shadow-3:0 18px 48px rgba(13,27,46,.12);
  --r-card:14px;
  --r-lg:20px;
  --r-btn:10px;
  --r-pill:999px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink-2);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--c-brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-accent);}
h1,h2,h3,h4{color:var(--c-ink);line-height:1.3;margin:0;}
p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(22,87,200,.28);border-radius:6px;}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 48px;}
@media (min-width:1400px){.wrap{max-width:1280px;}}
.section{padding:88px 0;}
.section--white{background:var(--c-surface);}
.section--tight{padding-top:64px;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:var(--shadow-1);}
.header-inner{
  display:flex;align-items:center;gap:24px;
  height:72px;
  transition:height .25s ease;
}
.site-header.is-stuck .header-inner{height:60px;}
.brand{
  display:flex;align-items:center;gap:10px;
  font-size:18px;font-weight:700;color:var(--c-ink);
  flex-shrink:0;
}
.brand:hover{color:var(--c-ink);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--c-brand);color:#fff;
  display:grid;place-items:center;
  font-family:var(--font-num);font-size:13px;font-weight:700;letter-spacing:.5px;
}
.brand-name{letter-spacing:.2px;}
.nav-chips{
  display:flex;align-items:center;gap:8px;
  margin-left:auto;
}
.chip{
  display:inline-flex;align-items:center;
  padding:8px 16px;border-radius:var(--r-pill);
  background:var(--c-brand-50);color:var(--c-brand);
  font-size:15px;font-weight:500;line-height:1.2;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.chip:hover{background:#DCE8FC;color:var(--c-brand-700);}
.chip:active{transform:translateY(1px);}
.chip.active{background:var(--c-brand);color:#fff;}
.chip.active:hover{background:var(--c-brand-700);color:#fff;}
.nav-cta{
  flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;border-radius:var(--r-btn);
  background:var(--c-accent);color:#fff;
  font-size:15px;font-weight:500;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.nav-cta:hover{background:#EB6A0B;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.nav-cta:active{transform:translateY(1px);}
.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:var(--r-btn);
  border:1px solid var(--c-line);background:#fff;
  align-items:center;justify-content:center;
  cursor:pointer;margin-left:auto;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);position:relative;}
.nav-toggle span::before,
.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ============ 页首 Banner ============ */
.page-banner{
  position:relative;
  background:var(--c-brand-50);
  overflow:hidden;
}
.banner-media{
  position:absolute;top:0;right:0;bottom:0;width:46%;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.banner-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,var(--c-brand-50) 0%,rgba(234,241,254,.55) 45%,rgba(234,241,254,.12) 100%);
}
.banner-inner{
  position:relative;z-index:2;
  min-height:180px;
  display:flex;flex-direction:column;justify-content:center;
  padding:36px 0;
}
.breadcrumb-line{
  font-size:14px;color:var(--c-ink-3);
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  margin-bottom:14px;
}
.breadcrumb-line a{color:var(--c-ink-3);}
.breadcrumb-line a:hover{color:var(--c-brand);}
.breadcrumb-line .sep{opacity:.6;}
.page-banner h1{
  font-size:40px;font-weight:800;max-width:760px;
  letter-spacing:-.2px;
}
.banner-sub{
  margin-top:14px;font-size:16px;color:var(--c-ink-2);max-width:620px;
}

/* ============ 导语区 ============ */
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.intro-text p + p{margin-top:16px;}
.intro-text p{font-size:16px;line-height:1.95;}
.intro-media{
  border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--shadow-2);
  aspect-ratio:4/3;
}
.intro-media img{width:100%;height:100%;object-fit:cover;}

/* ============ 通用标题 ============ */
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:30px;font-weight:700;}
.section-head p{margin-top:12px;font-size:16px;line-height:1.9;color:var(--c-ink-2);}
.eyebrow{
  display:inline-block;
  font-size:13px;font-weight:600;color:var(--c-brand);
  background:var(--c-brand-50);
  padding:6px 14px;border-radius:var(--r-pill);
  margin-bottom:14px;
}

/* ============ 时间轴 ============ */
.timeline{position:relative;padding-left:0;}
.timeline::before{
  content:"";position:absolute;left:17px;top:14px;bottom:14px;width:2px;
  background:linear-gradient(180deg,var(--c-brand-50),var(--c-line));
}
.tl-item{position:relative;padding-left:64px;margin-bottom:20px;}
.tl-item:last-child{margin-bottom:0;}
.tl-dot{
  position:absolute;left:0;top:22px;
  width:36px;height:36px;border-radius:50%;
  background:#fff;border:2px solid var(--c-brand);color:var(--c-brand);
  display:grid;place-items:center;
  font-family:var(--font-num);font-size:13px;font-weight:700;
  font-variant-numeric:tabular-nums;
  box-shadow:var(--shadow-1);
}
.tl-card{
  background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:24px 28px;
  box-shadow:var(--shadow-1);
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.tl-card:hover{box-shadow:var(--shadow-2);transform:translateY(-4px);border-color:transparent;}
.tl-step{
  font-size:13px;font-weight:600;color:var(--c-accent);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.tl-title{font-size:20px;font-weight:600;margin:6px 0 8px;}
.tl-text{font-size:15px;color:var(--c-ink-2);line-height:1.85;}

/* ============ 对比表 ============ */
.compare-wrap{
  background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);
}
.compare-scroll{overflow-x:auto;}
table.compare{width:100%;border-collapse:collapse;min-width:720px;}
table.compare th{
  background:var(--c-brand-700);color:#fff;
  font-size:15px;font-weight:600;text-align:left;
  padding:18px 20px;white-space:nowrap;
}
table.compare td{
  padding:18px 20px;font-size:15px;color:var(--c-ink-2);
  border-bottom:1px solid var(--c-line);vertical-align:top;
}
table.compare tbody tr:nth-child(even){background:var(--c-brand-50);}
table.compare tbody tr:last-child td{border-bottom:none;}
table.compare td:first-child{color:var(--c-ink);font-weight:600;}
.compare-note{
  margin-top:14px;font-size:13px;color:var(--c-ink-3);
}

/* ============ 要点分组 ============ */
.points-grid{display:grid;grid-template-columns:5fr 7fr;gap:28px;}
.point-group{
  background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:28px;
  box-shadow:var(--shadow-1);
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.point-group:hover{box-shadow:var(--shadow-2);transform:translateY(-4px);border-color:transparent;}
.point-group h3{
  font-size:18px;font-weight:600;padding-left:14px;position:relative;margin-bottom:16px;
}
.point-group h3::before{
  content:"";position:absolute;left:0;top:4px;bottom:4px;width:3px;
  background:var(--c-accent);border-radius:2px;
}
.point-list{list-style:none;padding:0;margin:0;}
.point-list li{
  position:relative;padding-left:24px;font-size:15px;line-height:1.9;
  color:var(--c-ink-2);
}
.point-list li + li{margin-top:10px;}
.point-list li::before{
  content:"✓";position:absolute;left:0;top:0;
  color:var(--c-data);font-size:14px;font-weight:700;
}
.points-stack{display:grid;gap:28px;}

/* ============ 数据条 ============ */
.stats-strip{background:var(--c-brand-700);padding:64px 0;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat{text-align:left;}
.stat-num{
  font-family:var(--font-num);font-size:48px;font-weight:700;
  color:#fff;line-height:1.1;font-variant-numeric:tabular-nums;
}
.stat-label{margin-top:8px;font-size:13px;color:rgba(255,255,255,.78);}

/* ============ FAQ ============ */
.faq-list{
  background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);
}
.faq-item + .faq-item{border-top:1px solid var(--c-line);}
.faq-q{
  width:100%;background:none;border:0;cursor:pointer;text-align:left;
  padding:22px 26px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  font-size:16px;font-weight:600;color:var(--c-ink);
  transition:background .2s ease;
}
.faq-q:hover{background:var(--c-brand-50);}
.faq-q .sign{
  font-family:var(--font-num);font-size:20px;font-weight:600;
  color:var(--c-accent);line-height:1;flex-shrink:0;
}
.faq-a{
  display:none;
  padding:0 26px 24px;
  font-size:15px;line-height:1.9;color:var(--c-ink-2);
}
.faq-item.open .faq-a{display:block;}

/* ============ CTA 条 ============ */
.cta-bar{
  background:var(--c-brand-700);
  border-radius:var(--r-lg);
  padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--shadow-2);
}
.cta-bar h2{color:#fff;font-size:26px;font-weight:700;}
.cta-bar p{color:rgba(255,255,255,.78);font-size:15px;margin-top:10px;max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-shrink:0;flex-wrap:wrap;}

/* ============ 按钮 ============ */
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:16px;font-weight:500;line-height:1;
  cursor:pointer;border:1.5px solid transparent;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-main{background:var(--c-accent);color:#fff;}
.btn-main:hover{background:#EB6A0B;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-main:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-ghost:active{transform:translateY(1px);}
.btn-outline-brand{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  border:1.5px solid var(--c-brand);color:var(--c-brand);
  font-size:16px;font-weight:500;background:transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.btn-outline-brand:hover{background:var(--c-brand-50);color:var(--c-brand-700);}
.btn-outline-brand:active{transform:translateY(1px);}

/* ============ 表单 ============ */
.form-card{
  background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-lg);padding:36px;
  box-shadow:var(--shadow-1);
}
.form-grid{
  display:grid;grid-template-columns:1fr 1fr 1fr auto;gap:20px;align-items:end;
}
.field label{
  display:block;font-size:14px;font-weight:500;color:var(--c-ink);margin-bottom:8px;
}
.field input,
.field select{
  width:100%;height:44px;padding:0 14px;
  border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:#fff;color:var(--c-ink);font-size:15px;font-family:inherit;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:var(--c-ink-3);}
.field input:focus,
.field select:focus{
  outline:none;border-color:var(--c-brand);box-shadow:0 0 0 4px rgba(22,87,200,.16);
}
.form-submit{
  height:44px;padding:0 28px;border-radius:var(--r-btn);
  background:var(--c-accent);color:#fff;border:0;cursor:pointer;
  font-size:15px;font-weight:500;white-space:nowrap;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.form-submit:hover{background:#EB6A0B;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.form-submit:active{transform:translateY(1px);}
.privacy-note{
  margin-top:16px;font-size:13px;line-height:1.8;color:var(--c-ink-3);
}
.privacy-note a{color:var(--c-ink-3);text-decoration:underline;}
.privacy-note a:hover{color:var(--c-brand);}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-brand-700);color:rgba(255,255,255,.82);padding:64px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:32px;
  padding-bottom:48px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.16);color:#fff;}
.footer-brand .brand-name{color:#fff;font-size:17px;font-weight:700;}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.74);}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:rgba(255,255,255,.8);font-size:14px;}
.footer-links a:hover{color:var(--c-accent);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.18);
  padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.7);
}
.footer-bottom a{color:rgba(255,255,255,.7);}
.footer-bottom a:hover{color:var(--c-accent);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .wrap{padding:0 32px;}
  .section{padding:64px 0;}
  .page-banner h1{font-size:34px;}
  .intro-grid{gap:36px;}
  .points-grid{grid-template-columns:1fr;}
}
@media (max-width:991px){
  .nav-toggle{display:flex;}
  .nav-chips{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:10px;
    background:#fff;padding:16px 32px 24px;
    box-shadow:var(--shadow-2);
    display:none;
    margin-left:0;
    border-top:1px solid var(--c-line);
  }
  .nav-chips.open{display:flex;}
  .chip{justify-content:center;padding:12px 16px;}
  .nav-cta{display:none;}
  .nav-cta.is-mobile{display:flex;width:100%;height:44px;}
  .header-inner{gap:12px;}
  .banner-media{width:40%;opacity:.85;}
  .intro-grid{grid-template-columns:1fr;}
  .intro-media{order:-1;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:36px 32px;}
  .form-grid{grid-template-columns:1fr 1fr;align-items:stretch;}
  .form-grid .field-full{grid-column:1 / -1;}
  .form-grid .submit-cell{grid-column:1 / -1;}
  .form-submit{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767px){
  .wrap{padding:0 20px;}
  .section{padding:48px 0;}
  .page-banner h1{font-size:28px;}
  .banner-inner{min-height:140px;padding:28px 0;}
  .banner-sub{font-size:15px;margin-top:10px;}
  .banner-media{width:36%;opacity:.6;}
  .section-head h2{font-size:22px;}
  .section-head{margin-bottom:28px;}
  .tl-item{padding-left:52px;}
  .tl-dot{width:30px;height:30px;font-size:12px;}
  .timeline::before{left:14px;}
  .tl-card{padding:20px 20px;}
  .tl-title{font-size:18px;}
  .stat-num{font-size:32px;}
  .faq-q{padding:18px 20px;font-size:15px;}
  .faq-a{padding:0 20px 20px;}
  .form-card{padding:24px 20px;}
  .form-grid{grid-template-columns:1fr;}
  .cta-bar h2{font-size:22px;}
  .btn-main,.btn-ghost,.btn-outline-brand{width:100%;}
  .cta-actions{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575px){
  .brand-name{font-size:16px;}
  .page-banner h1{font-size:24px;}
  .points-grid{gap:20px;}
  .point-group{padding:22px 20px;}
  .stats-grid{gap:24px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{transition:none !important;animation:none !important;}
}