/* roulang page: index */
:root{
  --brand-900:#0C3550;
  --brand-700:#14577D;
  --brand-500:#1D7FB0;
  --brand-100:#E6F1F7;
  --accent-500:#EA6A2A;
  --accent-600:#D2571F;
  --accent-100:#FDEEE5;
  --mint-500:#2FA37C;
  --ink-900:#14212C;
  --ink-600:#4E6070;
  --ink-400:#8695A3;
  --line:#E2E9EF;
  --surface:#FFFFFF;
  --canvas:#F5F8FA;
  --canvas-2:#EDF3F7;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --shadow-sm:0 1px 2px rgba(20,33,44,.06);
  --shadow-md:0 6px 18px rgba(20,33,44,.08);
  --shadow-lg:0 18px 44px rgba(16,58,85,.12);
  --ease:cubic-bezier(.2,.7,.3,1);

  --bs-primary:#1D7FB0;
  --bs-body-color:#14212C;
  --bs-body-bg:#FFFFFF;
  --bs-border-color:#E2E9EF;
  --bs-border-radius:14px;
  --bs-link-color:#1D7FB0;
  --bs-link-hover-color:#14577D;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-900);
  background:var(--surface);
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-500);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--brand-700);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 1.2em;color:var(--ink-600);}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px;}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.wrap{max-width:1344px;padding:0 72px;}}

.section{padding:96px 0;scroll-margin-top:96px;}
.section--tight{padding:72px 0;scroll-margin-top:96px;}
.section--canvas{background:var(--canvas);}
.section--canvas2{background:var(--canvas-2);}
@media (max-width:991px){.section{padding:72px 0;}.section--tight{padding:56px 0;}}
@media (max-width:575px){.section{padding:56px 0;}.section--tight{padding:44px 0;}}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-100);color:var(--brand-700);
  border-radius:var(--r-pill);padding:7px 16px;
  font-size:12px;line-height:1;letter-spacing:.04em;font-weight:600;
  margin-bottom:20px;
}
.eyebrow i{color:var(--accent-500);font-size:12px;}
.section-head{max-width:720px;margin-bottom:48px;}
.section-head h2{font-size:clamp(24px,3vw,32px);line-height:1.3;margin-bottom:14px;}
.section-head p{font-size:16px;line-height:1.85;color:var(--ink-600);}
@media (max-width:991px){.section-head{margin-bottom:36px;}}

/* ============ 浮动 Dock 导航 ============ */
.dock-wrap{position:sticky;top:16px;z-index:1035;padding:0 24px;margin-top:16px;}
@media (min-width:1440px){.dock-wrap{padding:0 72px;}}
.dock{
  max-width:1120px;margin:0 auto;
  display:flex;align-items:center;gap:16px;
  height:60px;padding:0 20px;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--shadow-md);
  transition:height .22s var(--ease),box-shadow .22s var(--ease);
}
.dock.is-scrolled{height:52px;box-shadow:var(--shadow-lg);}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;background:var(--brand-100);border-radius:50%;}
.brand-text{font-size:16px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;line-height:1.1;display:flex;flex-direction:column;}
.brand-sub{font-size:11px;font-weight:500;color:var(--brand-500);letter-spacing:.08em;line-height:1.4;}
.brand:hover .brand-text{color:var(--brand-700);}
.dock-menu{display:flex;align-items:center;gap:4px;margin-left:auto;}
.dock-link{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;
  font-size:15px;color:var(--ink-600);border-radius:var(--r-pill);
  transition:color .18s var(--ease),background .18s var(--ease);
}
.dock-link:hover{color:var(--brand-500);background:var(--brand-100);}
.dock-link.is-active{color:var(--brand-500);font-weight:600;}
.dock-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:16px;height:2px;border-radius:2px;background:var(--brand-500);
}
.dock-tools{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--line);
  background:var(--surface);color:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.icon-btn:hover{background:var(--brand-100);border-color:var(--brand-100);color:var(--brand-500);}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border:0;border-radius:var(--r-pill);
  background:var(--accent-500);color:#fff;font-size:15px;font-weight:600;
  box-shadow:var(--shadow-sm);
  transition:background .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-brand:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md);}
.btn-brand:active{transform:none;box-shadow:var(--shadow-sm);}
.btn-brand--sm{height:38px;padding:0 18px;font-size:14px;}
.btn-outline-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border:1.5px solid var(--brand-500);border-radius:var(--r-pill);
  background:transparent;color:var(--brand-500);font-size:15px;font-weight:600;
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.btn-outline-brand:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-1px);}
.btn-outline-brand:active{transform:none;}
.btn-brand--sm,.btn-outline-brand.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-500);
  background-image:linear-gradient(var(--brand-500),var(--brand-500));
  background-repeat:no-repeat;background-position:0 100%;background-size:0 1px;
  transition:background-size .22s var(--ease),color .18s var(--ease);
}
.link-arrow:hover{background-size:100% 1px;color:var(--brand-700);}

.dock-search{
  max-width:1120px;margin:10px auto 0;padding:16px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-md);
}
.dock-search form{display:flex;gap:12px;}
.dock-search .form-control{
  height:46px;border-radius:10px;border:1px solid var(--line);font-size:15px;color:var(--ink-900);
  box-shadow:none;
}
.dock-search .form-control:focus{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(29,127,176,.12);}
.dock-drawer{
  display:none;max-width:1120px;margin:10px auto 0;padding:10px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-md);
}
.dock-drawer.show{display:block;}
.dock-drawer a{
  display:flex;align-items:center;height:48px;padding:0 16px;border-radius:var(--r-md);
  font-size:15px;color:var(--ink-600);
}
.dock-drawer a:hover{background:var(--brand-100);color:var(--brand-700);}
.dock-drawer a.is-active{color:var(--brand-500);font-weight:600;background:var(--brand-100);}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
@media (max-width:991px){
  .dock-wrap{padding:0 16px;}
  .dock{height:56px;padding:0 14px;gap:10px;}
  .dock-menu{display:none;}
  .dock-tools .btn-brand--sm{display:none;}
  .brand-text{font-size:15px;}
}

/* ============ Hero ============ */
.hero{padding:72px 0 96px;position:relative;}
.hero::after{
  content:"";display:block;height:1px;background:var(--line);
  max-width:1200px;margin:80px auto 0;
}
.hero-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.hero h1{font-size:clamp(28px,4.4vw,44px);line-height:1.25;font-weight:700;letter-spacing:-.01em;margin-bottom:20px;}
.hero-sub{font-size:18px;line-height:1.8;color:var(--ink-600);margin-bottom:32px;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:40px;padding-top:28px;border-top:1px solid var(--line);}
.hero-stat{min-width:120px;}
.hero-stat b{display:block;font-size:24px;font-weight:700;color:var(--ink-900);line-height:1.3;}
.hero-stat span{font-size:13px;color:var(--ink-400);}
.hero-figure{position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:4/3;background:var(--brand-100);box-shadow:var(--shadow-lg);}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(29,127,176,.08),rgba(29,127,176,.02) 60%,rgba(12,53,80,.16));
}
@media (max-width:991px){
  .hero{padding:48px 0 72px;}
  .hero-row{grid-template-columns:1fr;gap:36px;}
  .hero-figure{order:-1;aspect-ratio:16/10;}
  .hero::after{margin-top:56px;}
}
@media (max-width:575px){
  .hero-sub{font-size:16px;}
  .hero-actions .btn-brand,.hero-actions .btn-outline-brand{width:100%;}
  .hero-stats{gap:24px;}
  .hero-stat{min-width:calc(50% - 12px);}
}

/* ============ 卡片 ============ */
.card-soft{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);padding:24px;height:100%;
  transition:box-shadow .22s var(--ease),transform .22s var(--ease);
}
.card-soft:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);}
.card-title{font-size:17px;line-height:1.5;font-weight:600;margin-bottom:10px;color:var(--ink-900);}
.card-text{font-size:15px;line-height:1.8;color:var(--ink-600);}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;background:var(--brand-100);color:var(--brand-700);
  border-radius:var(--r-pill);padding:5px 12px;font-size:12px;line-height:1;letter-spacing:.04em;font-weight:600;
}
.badge-accent{background:var(--accent-100);color:var(--accent-600);}
.badge-line{background:transparent;border:1px solid var(--brand-500);color:var(--brand-500);}

/* ============ 卖点区 ============ */
.hl-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.hl-main{grid-column:span 6;grid-row:span 2;display:flex;flex-direction:column;padding:0;overflow:hidden;}
.hl-main .hl-media{aspect-ratio:16/9;overflow:hidden;background:var(--brand-100);}
.hl-main .hl-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.hl-main:hover .hl-media img{transform:scale(1.03);}
.hl-main .hl-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.hl-main h3{font-size:20px;line-height:1.45;font-weight:600;}
.hl-side{grid-column:span 3;}
.hl-points{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px;}
.hl-point{display:flex;gap:14px;align-items:flex-start;padding:20px 22px;background:var(--canvas);border-radius:var(--r-md);border:1px solid var(--line);}
.hl-point i{color:var(--brand-500);font-size:18px;margin-top:4px;}
.hl-point strong{display:block;font-size:15px;font-weight:600;color:var(--ink-900);margin-bottom:4px;}
.hl-point span{font-size:14px;line-height:1.7;color:var(--ink-600);}
@media (max-width:991px){
  .hl-main{grid-column:span 12;grid-row:auto;}
  .hl-side{grid-column:span 6;}
  .hl-points{grid-template-columns:1fr;}
}
@media (max-width:575px){.hl-side{grid-column:span 12;}}

/* ============ 演示区 ============ */
.demo-grid{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start;}
.demo-tabs{display:flex;flex-direction:column;gap:12px;}
.demo-tab{
  display:flex;align-items:flex-start;gap:14px;text-align:left;width:100%;
  padding:18px 20px;border-radius:var(--r-md);border:1px solid var(--line);
  background:var(--surface);color:var(--ink-900);cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.demo-tab i{color:var(--brand-500);font-size:16px;margin-top:4px;}
.demo-tab strong{display:block;font-size:16px;font-weight:600;margin-bottom:4px;}
.demo-tab span{font-size:14px;line-height:1.7;color:var(--ink-600);}
.demo-tab:hover{border-color:var(--brand-500);box-shadow:var(--shadow-sm);}
.demo-tab.is-active{background:var(--brand-500);border-color:var(--brand-500);box-shadow:var(--shadow-md);}
.demo-tab.is-active strong,.demo-tab.is-active span,.demo-tab.is-active i{color:#fff;}
.demo-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-md);overflow:hidden;}
.demo-media{aspect-ratio:3/2;overflow:hidden;background:var(--brand-100);position:relative;}
.demo-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.demo-panel:hover .demo-media img{transform:scale(1.03);}
.demo-media .badge-soft{position:absolute;top:16px;left:16px;background:rgba(255,255,255,.92);}
.demo-body{padding:24px;}
.demo-body h3{font-size:20px;line-height:1.45;font-weight:600;margin-bottom:12px;}
.demo-note{font-size:14px;line-height:1.7;color:var(--ink-400);margin-top:16px;}
@media (max-width:991px){.demo-grid{grid-template-columns:1fr;gap:28px;}}

/* ============ 证据区 ============ */
.proof-bar{display:grid;grid-template-columns:repeat(4,1fr);background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-sm);overflow:hidden;}
.proof-item{padding:28px 24px;border-right:1px solid var(--line);}
.proof-item:last-child{border-right:0;}
.proof-item b{display:block;font-size:32px;font-weight:700;color:var(--brand-500);line-height:1.2;}
.proof-item span{display:block;font-size:14px;color:var(--ink-600);margin-top:6px;}
.proof-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-top:56px;}
.proof-row + .proof-row{margin-top:56px;}
.proof-figure{aspect-ratio:3/2;border-radius:var(--r-lg);overflow:hidden;background:var(--brand-100);box-shadow:var(--shadow-md);}
.proof-figure img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.proof-figure:hover img{transform:scale(1.03);}
.proof-copy h3{font-size:20px;line-height:1.45;font-weight:600;margin-bottom:14px;}
.proof-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.proof-list li{display:flex;gap:10px;font-size:15px;line-height:1.75;color:var(--ink-600);}
.proof-list i{color:var(--mint-500);margin-top:6px;font-size:13px;}
@media (max-width:991px){
  .proof-bar{grid-template-columns:1fr 1fr;}
  .proof-item{border-right:1px solid var(--line);border-bottom:1px solid var(--line);}
  .proof-item:nth-child(2n){border-right:0;}
  .proof-item:nth-child(n+3){border-bottom:0;}
  .proof-row{grid-template-columns:1fr;gap:24px;margin-top:40px;}
  .proof-row + .proof-row{margin-top:40px;}
  .proof-row .proof-figure{order:-1;}
}
@media (max-width:575px){.proof-item b{font-size:26px;}}

/* ============ 价格区 ============ */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.price-card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);padding:32px 26px;display:flex;flex-direction:column;height:100%;
  transition:box-shadow .22s var(--ease),transform .22s var(--ease);
}
.price-card:hover{box-shadow:var(--shadow-md);}
.price-card.is-featured{
  border:1.5px solid var(--brand-500);
  box-shadow:var(--shadow-lg);
  transform:translateY(-12px);
}
.price-flag{
  position:absolute;top:-12px;right:24px;
  background:var(--accent-500);color:#fff;border-radius:var(--r-pill);
  padding:6px 14px;font-size:12px;font-weight:600;letter-spacing:.04em;
}
.price-name{font-size:16px;font-weight:600;color:var(--brand-700);margin-bottom:10px;}
.price-value{display:flex;align-items:baseline;gap:6px;margin-bottom:8px;}
.price-value b{font-size:32px;font-weight:700;color:var(--ink-900);letter-spacing:-.02em;}
.price-value span{font-size:14px;color:var(--ink-400);}
.price-desc{font-size:14px;line-height:1.7;color:var(--ink-600);margin-bottom:20px;}
.price-list{display:flex;flex-direction:column;gap:12px;margin-bottom:28px;flex:1;}
.price-list li{display:flex;gap:10px;font-size:15px;line-height:1.7;color:var(--ink-600);}
.price-list i{color:var(--mint-500);margin-top:6px;font-size:13px;}
@media (max-width:991px){
  .price-grid{grid-template-columns:1fr;gap:20px;}
  .price-card.is-featured{transform:none;}
}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto;}
.accordion-item{
  background:var(--surface);border:1px solid var(--line)!important;border-radius:var(--r-md)!important;
  margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow-sm);
}
.accordion-button{
  background:var(--surface);color:var(--ink-900);font-size:16px;font-weight:600;line-height:1.6;
  padding:20px 20px;box-shadow:none!important;border-radius:var(--r-md)!important;
}
.accordion-button:not(.collapsed){color:var(--brand-700);background:var(--brand-100);}
.accordion-button::after{
  background-image:none;content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  color:var(--brand-500);font-size:13px;width:auto;height:auto;transform:none;
  transition:transform .18s var(--ease);
}
.accordion-button:not(.collapsed)::after{content:"\f068";transform:rotate(180deg);}
.accordion-body{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--ink-600);}

/* ============ 最新动态 ============ */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.news-head .section-head{margin-bottom:0;max-width:640px;}
.news-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);overflow:hidden;height:100%;display:flex;flex-direction:column;
  transition:box-shadow .22s var(--ease),transform .22s var(--ease);
}
.news-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-100);position:relative;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-body h3{font-size:17px;line-height:1.5;font-weight:600;color:var(--ink-900);}
.news-body h3 a{color:inherit;}
.news-body h3 a:hover{color:var(--brand-500);}
.news-summary{font-size:14px;line-height:1.7;color:var(--ink-600);}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
}
.news-foot time,.news-foot .news-cat{font-size:13px;color:var(--ink-400);}
.news-foot .news-cat{color:var(--brand-700);font-weight:600;}
.empty-state{
  text-align:center;padding:64px 24px;background:var(--surface);
  border:1px dashed var(--line);border-radius:var(--r-lg);
}
.empty-state i{font-size:34px;color:rgba(29,127,176,.3);margin-bottom:16px;}
.empty-state p{font-size:15px;color:var(--ink-600);margin-bottom:20px;}

/* ============ 底部转化条 ============ */
.cta-band{background:var(--brand-100);border-radius:var(--r-lg);padding:40px 44px;display:flex;align-items:center;justify-content:space-between;gap:32px;}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);line-height:1.4;font-weight:700;margin-bottom:8px;}
.cta-band p{font-size:15px;line-height:1.75;color:var(--ink-600);max-width:620px;}
@media (max-width:991px){.cta-band{flex-direction:column;align-items:flex-start;padding:32px 24px;}}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.1);}
.footer-brand-text{font-size:16px;font-weight:700;color:#fff;line-height:1.2;}
.footer-brand-text span{display:block;font-size:11px;font-weight:500;color:rgba(255,255,255,.6);letter-spacing:.08em;}
.site-footer p{color:rgba(255,255,255,.7);font-size:14px;line-height:1.8;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7);}
.footer-col a:hover{color:#fff;}
.footer-meta{display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(255,255,255,.7);}
.footer-meta i{color:var(--brand-500);margin-right:8px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}
@media (max-width:991px){
  .site-footer{padding-top:56px;margin-top:72px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575px){.footer-grid{grid-template-columns:1fr;}}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:28px;z-index:1030;
  display:flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.94);backdrop-filter:blur(12px);
  border:1px solid var(--line);border-radius:var(--r-pill);padding:10px;box-shadow:var(--shadow-lg);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta .btn-ghost{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 20px;
  border-radius:var(--r-pill);background:var(--brand-100);color:var(--brand-700);
  font-size:14px;font-weight:600;border:0;
}
.float-cta .btn-ghost:hover{background:var(--canvas-2);color:var(--brand-900);}
@media (max-width:991px){
  body{padding-bottom:72px;}
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;border-left:0;border-right:0;border-bottom:0;
    padding:8px 16px calc(8px + env(safe-area-inset-bottom));
    gap:10px;
  }
  .float-cta .btn-brand,.float-cta .btn-ghost{flex:1;height:44px;padding:0 10px;justify-content:center;font-size:14px;}
}

/* ============ 进场动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{transition-duration:.01ms!important;animation-duration:.01ms!important;}
}

/* roulang page: article */
:root{
  --brand-900:#0C3550;
  --brand-700:#14577D;
  --brand-500:#1D7FB0;
  --brand-100:#E6F1F7;
  --accent-500:#EA6A2A;
  --accent-600:#D2571F;
  --accent-100:#FDEEE5;
  --mint-500:#2FA37C;
  --ink-900:#14212C;
  --ink-600:#4E6070;
  --ink-400:#8695A3;
  --line:#E2E9EF;
  --surface:#FFFFFF;
  --canvas:#F5F8FA;
  --canvas-2:#EDF3F7;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --shadow-sm:0 1px 2px rgba(20,33,44,.06);
  --shadow-md:0 6px 18px rgba(20,33,44,.08);
  --shadow-lg:0 18px 44px rgba(16,58,85,.12);
  --ease:cubic-bezier(.2,.7,.3,1);

  --bs-primary:#1D7FB0;
  --bs-body-color:#14212C;
  --bs-body-bg:#F5F8FA;
  --bs-border-color:#E2E9EF;
  --bs-border-radius:14px;
  --bs-link-color:#1D7FB0;
  --bs-link-hover-color:#14577D;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-900);
  background:var(--canvas);
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,p,figure,ul,ol{margin:0}
ul,ol{list-style:none;padding-left:0}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-500);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--brand-700)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.wrap{padding:0 72px;max-width:1344px}}

/* ---------- Dock 导航 ---------- */
.dock{
  position:sticky;
  top:16px;
  z-index:1030;
  width:calc(100% - 32px);
  max-width:1120px;
  margin:16px auto 0;
  display:flex;
  align-items:center;
  gap:16px;
  height:60px;
  padding:0 20px;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--shadow-md);
  transition:height .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.dock.is-compact{height:52px;box-shadow:var(--shadow-lg);background:rgba(255,255,255,.94)}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink-900)}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;background:var(--brand-100);flex:0 0 auto}
.brand-text{font-size:16px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;color:var(--ink-900)}
.brand-sub{display:inline-block;margin-left:6px;font-size:11px;font-weight:600;letter-spacing:.06em;color:var(--brand-700);background:var(--brand-100);border-radius:var(--r-pill);padding:2px 8px;vertical-align:2px}

.dock-menu{display:flex;align-items:center;gap:4px;margin:0 auto}
.dock-link{
  position:relative;
  padding:6px 12px;
  font-size:15px;
  color:var(--ink-600);
  border-radius:var(--r-pill);
  transition:color .18s var(--ease),background .18s var(--ease);
}
.dock-link::after{
  content:"";
  display:block;
  width:0;height:2px;
  margin:4px auto 0;
  border-radius:2px;
  background:var(--brand-500);
  transition:width .2s var(--ease);
}
.dock-link:hover{color:var(--brand-500)}
.dock-link:hover::after{width:16px}
.dock-link.is-active{color:var(--brand-500);font-weight:600}
.dock-link.is-active::after{width:16px}

.dock-tools{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:50%;background:var(--surface);
  color:var(--brand-700);font-size:15px;
  transition:background .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease),transform .18s var(--ease);
}
.icon-btn:hover{background:var(--brand-100);color:var(--brand-700);box-shadow:var(--shadow-sm);transform:translateY(-1px)}
.icon-btn:active{transform:none}

.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;
  background:var(--accent-500);color:#fff;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border-radius:var(--r-pill);
  box-shadow:0 2px 6px rgba(234,106,42,.22);
  transition:background .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-brand:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-brand:active{transform:none;box-shadow:0 1px 3px rgba(234,106,42,.24)}
.btn-brand--sm{height:40px;padding:0 18px;font-size:14px}

.btn-outline-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;
  background:transparent;color:var(--brand-500);
  font-size:15px;font-weight:600;
  border:1.5px solid var(--brand-500);border-radius:var(--r-pill);
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),border-color .18s var(--ease);
}
.btn-outline-brand:hover{background:var(--brand-100);color:var(--brand-700);border-color:var(--brand-700);transform:translateY(-1px)}
.btn-outline-brand:active{transform:none}

.dock-search{
  display:none;
  position:absolute;top:calc(100% + 10px);left:0;right:0;
  padding:14px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-lg);
}
.dock-search.is-open{display:block}
.dock-search form{display:flex;gap:10px}
.dock-search input{
  flex:1 1 auto;height:46px;padding:0 16px;
  border:1px solid var(--line);border-radius:10px;background:var(--canvas);
  font-size:15px;outline:none;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
}
.dock-search input:focus{border-color:var(--brand-500);background:#fff;box-shadow:0 0 0 3px rgba(29,127,176,.12)}

/* ---------- 主区域 ---------- */
.page-main{padding:28px 0 88px}

.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-400);margin:8px 0 20px;
}
.crumb a{color:var(--ink-400)}
.crumb a:hover{color:var(--brand-500)}
.crumb .sep{color:#C3CFD9}
.crumb .cur{color:var(--ink-600)}

.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 280px;
  gap:56px;
  align-items:start;
}

.article-head{max-width:800px}
.article-head h1{
  font-size:clamp(28px,4.4vw,44px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink-900);
  margin-bottom:18px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13.5px;color:var(--ink-400);
  padding-bottom:22px;border-bottom:1px solid var(--line);
}
.badge-cat{
  display:inline-flex;align-items:center;
  height:26px;padding:0 12px;
  background:var(--brand-100);color:var(--brand-700);
  font-size:12px;font-weight:600;letter-spacing:.04em;
  border-radius:var(--r-pill);
}
.meta-row .dot{color:#C3CFD9}

.article-body{
  max-width:800px;
  margin-top:28px;
  font-size:17px;
  line-height:1.9;
  color:var(--ink-900);
  overflow-wrap:break-word;
}
.article-body p{margin:0 0 22px}
.article-body > h2{
  font-size:24px;line-height:1.35;font-weight:700;
  margin:40px 0 16px;padding-left:14px;
  border-left:4px solid var(--brand-500);
}
.article-body > h3{font-size:20px;line-height:1.45;font-weight:600;margin:30px 0 12px}
.article-body > h4{font-size:17px;font-weight:600;margin:24px 0 10px}
.article-body ul{list-style:disc;margin:0 0 22px;padding-left:24px;line-height:1.9}
.article-body ol{list-style:decimal;margin:0 0 22px;padding-left:24px;line-height:1.9}
.article-body li{margin-bottom:8px}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;
  background:var(--brand-100);
  border-left:4px solid var(--brand-500);
  border-radius:var(--r-md);
  color:var(--ink-600);
}
.article-body img{border-radius:var(--r-md);margin:10px 0 8px;width:100%}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--ink-400);text-align:center;margin-top:8px}
.article-body a{color:var(--brand-500);background-image:linear-gradient(var(--brand-500),var(--brand-500));background-repeat:no-repeat;background-position:0 100%;background-size:0 1px;transition:background-size .2s var(--ease)}
.article-body a:hover{background-size:100% 1px;color:var(--brand-700)}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:22px 0}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:var(--canvas-2);font-weight:600}
.article-body strong{font-weight:700}

.empty-state{
  padding:56px 24px;text-align:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
}
.empty-state i{font-size:30px;color:rgba(29,127,176,.32);display:block;margin-bottom:14px}
.empty-state p{font-size:15px;color:var(--ink-600);margin-bottom:18px}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:20px;
  box-shadow:var(--shadow-sm);
}
.side-card h3{
  font-size:15px;font-weight:600;color:var(--ink-900);
  display:flex;align-items:center;gap:8px;margin-bottom:14px;
}
.side-card h3 i{color:var(--brand-500);font-size:13px}
.toc-list{display:flex;flex-direction:column;gap:8px}
.toc-list a{
  display:block;font-size:14px;line-height:1.6;color:var(--ink-600);
  padding-left:12px;border-left:2px solid var(--line);
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.toc-list a:hover{color:var(--brand-500);border-color:var(--brand-500)}
.hot-list{display:flex;flex-direction:column;gap:14px}
.hot-list a{display:block;color:var(--ink-900)}
.hot-list .hot-title{
  font-size:14px;line-height:1.6;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .18s var(--ease);
}
.hot-list a:hover .hot-title{color:var(--brand-500)}
.hot-list .hot-time{display:block;font-size:12.5px;color:var(--ink-400);margin-top:4px}
.hot-list li{padding-bottom:14px;border-bottom:1px dashed var(--line)}
.hot-list li:last-child{padding-bottom:0;border-bottom:0}

/* ---------- 标签 ---------- */
.tag-block{max-width:800px;margin-top:40px}
.tag-block h3{font-size:15px;font-weight:600;color:var(--ink-600);margin-bottom:12px}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.tag-pill{
  display:inline-flex;align-items:center;height:32px;padding:0 16px;
  font-size:13.5px;color:var(--brand-700);
  border:1px solid var(--brand-500);border-radius:var(--r-pill);
  background:transparent;
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.tag-pill:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-1px)}

/* ---------- 相关推荐 ---------- */
.related{margin-top:64px;padding-top:48px;border-top:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}
.section-head h2{font-size:clamp(22px,2.6vw,28px);font-weight:700;letter-spacing:-.01em}
.section-head .more{
  font-size:14px;color:var(--brand-500);
  background-image:linear-gradient(var(--brand-500),var(--brand-500));
  background-repeat:no-repeat;background-position:0 100%;background-size:100% 1px;
  padding-bottom:3px;
}
.section-head .more:hover{color:var(--brand-700)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}

.card-soft{
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card-soft:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#D3DFE8}
.card-thumb{
  position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;
  background:var(--brand-100);
}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.card-soft:hover .card-thumb img{transform:scale(1.03)}
.card-thumb::after{content:"";position:absolute;inset:0;background:rgba(29,127,176,.12)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.card-body .badge-cat{align-self:flex-start}
.card-title{
  font-size:17px;line-height:1.5;font-weight:600;color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-soft:hover .card-title{color:var(--brand-700)}
.card-text{
  font-size:14px;line-height:1.7;color:var(--ink-600);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;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-400);
}
.card-foot .read{color:var(--brand-500);font-weight:600}
.card-soft:hover .card-foot .read{color:var(--brand-700)}

/* ---------- 返回入口 ---------- */
.back-row{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:18px;
  margin-top:56px;padding-top:44px;border-top:1px solid var(--line);
}
.back-link{
  font-size:14px;color:var(--brand-500);
  background-image:linear-gradient(var(--brand-500),var(--brand-500));
  background-repeat:no-repeat;background-position:0 100%;background-size:100% 1px;
  padding-bottom:3px;
}
.back-link:hover{color:var(--brand-700)}

/* ---------- 浮动按钮 ---------- */
.float-actions{
  position:fixed;right:26px;bottom:28px;z-index:1030;
  display:flex;flex-direction:column;gap:10px;
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.float-actions.is-visible{opacity:1;transform:none;pointer-events:auto}
.fab{
  width:48px;height:48px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--surface);color:var(--brand-700);
  border:1px solid var(--line);box-shadow:var(--shadow-md);
  font-size:16px;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
}
.fab:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);background:var(--brand-100)}
.fab--primary{background:var(--accent-500);color:#fff;border-color:transparent;box-shadow:0 6px 18px rgba(234,106,42,.28)}
.fab--primary:hover{background:var(--accent-600);color:#fff;box-shadow:0 10px 24px rgba(234,106,42,.32)}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--brand-900);
  color:rgba(255,255,255,.7);
  padding:72px 0 28px;
  margin-top:24px;
}
.site-footer a{color:rgba(255,255,255,.7)}
.site-footer a:hover{color:#fff}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.4fr;
  gap:44px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.1)}
.footer-brand-text{font-size:17px;font-weight:700;color:#fff}
.footer-brand-text span{
  display:inline-block;margin-left:6px;font-size:11px;font-weight:600;letter-spacing:.06em;
  color:#fff;background:rgba(255,255,255,.16);border-radius:var(--r-pill);padding:2px 8px;vertical-align:2px;
}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66)}
.footer-col h4{
  font-size:14px;font-weight:600;color:#fff;letter-spacing:.02em;
  margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col ul a{font-size:14px;transition:color .18s var(--ease),padding-left .18s var(--ease)}
.footer-col ul a:hover{padding-left:4px}
.footer-meta{display:flex;flex-direction:column;gap:12px;font-size:14px;line-height:1.7}
.footer-meta i{color:var(--brand-500);margin-right:8px}
.footer-meta span{color:rgba(255,255,255,.68)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  padding-top:24px;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 进场动画 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .article-layout{gap:36px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
}
@media (max-width:991.98px){
  .dock{height:56px;padding:0 14px;gap:10px;position:sticky;top:10px;margin-top:10px}
  .dock.is-compact{height:52px}
  .dock-menu{
    display:none;
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    padding:10px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    box-shadow:var(--shadow-lg);
    margin:0 auto;
  }
  .dock.menu-open .dock-menu{display:flex}
  .dock-link{display:flex;align-items:center;height:48px;padding:0 14px;border-radius:var(--r-md);font-size:15px}
  .dock-link::after{display:none}
  .dock-link.is-active{background:var(--brand-100);font-weight:600}
  #menuToggle{display:inline-flex !important}
  .dock-tools .btn-brand--sm{display:none}

  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px}
  .article-side{position:static;order:2}
  .article-main{max-width:100%}
  .article-body{max-width:100%;font-size:16.5px}
  .article-head{max-width:100%}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767.98px){
  .wrap{padding:0 18px}
  .page-main{padding:20px 0 64px}
  .article-head h1{font-size:clamp(24px,6.4vw,30px)}
  .article-body{font-size:16px;line-height:1.85}
  .article-body > h2{font-size:20px;margin-top:32px}
  .article-body > h3{font-size:18px}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .related{margin-top:48px;padding-top:36px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:56px 0 24px}
  .float-actions{right:16px;bottom:16px;padding-bottom:env(safe-area-inset-bottom)}
  .fab{width:44px;height:44px}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --brand-900:#0C3550;
  --brand-700:#14577D;
  --brand-500:#1D7FB0;
  --brand-100:#E6F1F7;
  --accent-500:#EA6A2A;
  --accent-600:#D2571F;
  --accent-100:#FDEEE5;
  --mint-500:#2FA37C;
  --ink-900:#14212C;
  --ink-600:#4E6070;
  --ink-400:#8695A3;
  --line:#E2E9EF;
  --surface:#FFFFFF;
  --canvas:#F5F8FA;
  --canvas-2:#EDF3F7;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --shadow-sm:0 1px 2px rgba(20,33,44,.06);
  --shadow-md:0 6px 18px rgba(20,33,44,.08);
  --shadow-lg:0 18px 44px rgba(16,58,85,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --bs-primary:#1D7FB0;
  --bs-body-color:#14212C;
  --bs-body-bg:#F5F8FA;
  --bs-border-color:#E2E9EF;
  --bs-border-radius:14px;
  --bs-link-color:#1D7FB0;
  --bs-link-hover-color:#14577D;
  --bs-font-sans-serif:var(--font-cn);
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:110px;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-900);
  background:var(--canvas);
  text-align:left;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand-500);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding-left:1.1em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px;}
::selection{background:var(--brand-100);color:var(--brand-700);}

/* ============ 容器 ============ */
.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){
  .wrap{padding:0 72px;}
}

/* ============ 浮动 Dock 导航 ============ */
.dock{
  position:sticky;
  top:16px;
  z-index:1040;
  width:calc(100% - 32px);
  max-width:1120px;
  margin:16px auto 0;
  height:60px;
  padding:0 20px;
  display:flex;
  align-items:center;
  gap:16px;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--shadow-md);
  transition:height .24s var(--ease),box-shadow .24s var(--ease);
}
.dock.is-scrolled{height:52px;box-shadow:var(--shadow-lg);}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink-900);}
.brand:hover{color:var(--ink-900);}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.brand-sub{
  font-size:12px;
  font-weight:600;
  color:var(--brand-500);
  background:var(--brand-100);
  border-radius:var(--r-pill);
  padding:2px 8px;
  margin-left:6px;
  letter-spacing:.04em;
}
.dock-menu{display:flex;align-items:center;gap:4px;margin:0 auto;}
.dock-link{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  font-size:14.5px;
  font-weight:500;
  color:var(--ink-600);
  border-radius:var(--r-pill);
  white-space:nowrap;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.dock-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  width:16px;
  height:2px;
  border-radius:2px;
  background:var(--brand-500);
  transform:translateX(-50%) scaleX(0);
  transform-origin:center;
  transition:transform .2s var(--ease);
}
.dock-link:hover{color:var(--brand-500);background:var(--brand-100);}
.dock-link.is-active{color:var(--brand-500);font-weight:600;}
.dock-link.is-active::after{transform:translateX(-50%) scaleX(1);}
.dock-tools{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:50%;
  background:var(--surface);
  color:var(--brand-700);
  cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.icon-btn:hover{background:var(--brand-100);color:var(--brand-500);transform:translateY(-1px);}
.dock-search{
  position:fixed;
  top:88px;
  left:50%;
  transform:translateX(-50%) translateY(-8px);
  width:min(620px,calc(100% - 32px));
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-lg);
  padding:14px;
  display:flex;
  gap:10px;
  opacity:0;
  visibility:hidden;
  z-index:1039;
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
}
.dock-search.is-open{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);}
.dock-search input{
  flex:1;
  height:46px;
  padding:0 16px;
  font-size:15px;
  color:var(--ink-900);
  background:var(--canvas);
  border:1px solid var(--line);
  border-radius:10px;
}
.dock-search input:focus{outline:none;border:1.5px solid var(--brand-500);box-shadow:0 0 0 3px rgba(29,127,176,.12);background:#fff;}
.dock-search button{
  height:46px;padding:0 22px;border:0;border-radius:var(--r-pill);
  background:var(--brand-500);color:#fff;font-weight:600;font-size:14px;cursor:pointer;
  transition:background .18s var(--ease);
}
.dock-search button:hover{background:var(--brand-700);}

/* 移动抽屉 */
.dock-drawer{
  position:fixed;
  top:84px;
  left:16px;
  right:16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-lg);
  padding:12px;
  z-index:1039;
  display:none;
}
.dock-drawer.is-open{display:block;}
.dock-drawer a{
  display:block;
  min-height:48px;
  line-height:48px;
  padding:0 16px;
  border-radius:var(--r-sm);
  color:var(--ink-900);
  font-size:15px;
  font-weight:500;
}
.dock-drawer a:hover{background:var(--brand-100);color:var(--brand-500);}
.dock-drawer a.is-active{color:var(--brand-500);background:var(--brand-100);font-weight:600;}

@media (max-width:991px){
  .dock-menu{display:none;}
  .dock{padding:0 14px;gap:10px;}
  .brand-text{font-size:15.5px;}
  .brand-sub{display:none;}
}
@media (max-width:575px){
  .dock{top:10px;margin-top:10px;height:56px;}
  .dock-tools .btn-brand{display:none;}
}

/* ============ 按钮 ============ */
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;
  padding:0 24px;
  font-size:15px;
  font-weight:600;
  color:#fff;
  background:var(--accent-500);
  border:0;
  border-radius:var(--r-pill);
  cursor:pointer;
  box-shadow:var(--shadow-sm);
  transition:background .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-brand:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md);}
.btn-brand:active{transform:none;box-shadow:var(--shadow-sm);}
.btn-brand--sm{height:40px;padding:0 18px;font-size:14px;}
.btn-outline-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;
  padding:0 24px;
  font-size:15px;
  font-weight:600;
  color:var(--brand-500);
  background:transparent;
  border:1.5px solid var(--brand-500);
  border-radius:var(--r-pill);
  cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.btn-outline-brand:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-1px);}
.btn-ghost-light{
  display:inline-flex;align-items:center;justify-content:center;
  height:46px;padding:0 24px;
  font-size:15px;font-weight:600;
  color:#fff;
  background:rgba(255,255,255,.12);
  border:1.5px solid rgba(255,255,255,.6);
  border-radius:var(--r-pill);
  transition:background .18s var(--ease),border-color .18s var(--ease);
}
.btn-ghost-light:hover{background:rgba(255,255,255,.22);color:#fff;border-color:#fff;}

.link-more{
  display:inline-block;
  font-size:14px;
  font-weight:600;
  color:var(--brand-500);
  padding-bottom:2px;
  background-image:linear-gradient(var(--brand-500),var(--brand-500));
  background-repeat:no-repeat;
  background-position:0 100%;
  background-size:0 1px;
  transition:background-size .22s var(--ease),color .18s var(--ease);
}
.link-more:hover{background-size:100% 1px;color:var(--brand-700);}

/* ============ 面包屑 ============ */
.crumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;
  color:var(--ink-400);
  margin-bottom:16px;
  flex-wrap:wrap;
}
.crumb a{color:var(--ink-400);}
.crumb a:hover{color:var(--brand-500);}
.crumb .current{color:var(--ink-600);}
.crumb--light,.crumb--light a{color:rgba(255,255,255,.78);}
.crumb--light .current{color:#fff;}
.crumb--light a:hover{color:#fff;}

/* ============ 顶部 Banner ============ */
.cat-banner{
  position:relative;
  margin-top:24px;
  min-height:300px;
  display:flex;
  align-items:flex-end;
  border-radius:var(--r-lg);
  overflow:hidden;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  box-shadow:var(--shadow-md);
}
.cat-banner::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(12,53,80,.78),rgba(20,87,125,.72));
}
.cat-banner-inner{position:relative;z-index:2;padding:44px 40px 40px;width:100%;}
.cat-banner h1{
  font-size:clamp(28px,4.4vw,44px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
  color:#fff;
  margin-bottom:14px;
}
.cat-banner-desc{
  font-size:15px;
  line-height:1.8;
  color:rgba(255,255,255,.82);
  max-width:680px;
  margin-bottom:24px;
}
.cat-banner-actions{display:flex;gap:12px;flex-wrap:wrap;}
@media (max-width:767px){
  .cat-banner-inner{padding:28px 22px 26px;}
  .cat-banner{min-height:260px;}
}

/* ============ 区块通用 ============ */
.sec{padding:96px 0;scroll-margin-top:96px;}
.sec--tight{padding:72px 0;}
.sec--canvas2{background:var(--canvas-2);}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-eyebrow{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--brand-700);
  background:var(--brand-100);
  border-radius:var(--r-pill);
  padding:5px 12px;
  margin-bottom:14px;
}
.sec-title{
  font-size:clamp(24px,3vw,32px);
  line-height:1.3;
  font-weight:700;
  color:var(--ink-900);
  margin-bottom:14px;
}
.sec-sub{font-size:16px;line-height:1.85;color:var(--ink-600);}
@media (max-width:991px){.sec{padding:72px 0;}.sec--tight{padding:56px 0;}}
@media (max-width:575px){.sec{padding:56px 0;}.sec-head{margin-bottom:32px;}}

/* ============ 要点面板 ============ */
.info-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.info-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:24px 22px;
  box-shadow:var(--shadow-sm);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.info-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
.info-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:50%;
  background:var(--brand-100);color:var(--brand-700);
  font-size:14px;font-weight:700;letter-spacing:.02em;
  margin-bottom:14px;
}
.info-card h3{font-size:17px;line-height:1.5;font-weight:600;margin-bottom:8px;}
.info-card p{font-size:14px;line-height:1.8;color:var(--ink-600);}
@media (max-width:991px){.info-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:575px){.info-grid{grid-template-columns:1fr;}}

/* ============ 数据条 ============ */
.stat-bar{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
}
.stat-item{padding:28px 20px;text-align:left;border-right:1px solid var(--line);}
.stat-item:last-child{border-right:0;}
.stat-num{font-size:32px;font-weight:700;line-height:1.2;color:var(--brand-500);letter-spacing:-.01em;}
.stat-num span{font-size:14px;font-weight:600;color:var(--ink-400);margin-left:4px;}
.stat-label{font-size:14px;color:var(--ink-600);margin-top:6px;}
@media (max-width:767px){
  .stat-bar{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(2){border-right:0;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line);}
  .stat-num{font-size:26px;}
}

/* ============ 内容卡网格 ============ */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.card-soft{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.card-soft:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
.card-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:rgba(29,127,176,.08);
  background-image:linear-gradient(135deg,rgba(29,127,176,.08),rgba(20,87,125,.06));
}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease);}
.card-thumb::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(29,127,176,.12),rgba(29,127,176,0));
}
.card-soft:hover .card-thumb img{transform:scale(1.03);}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.badge-soft{
  align-self:flex-start;
  display:inline-block;
  font-size:12px;
  line-height:1;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--brand-700);
  background:var(--brand-100);
  border-radius:var(--r-pill);
  padding:6px 10px;
}
.card-title{font-size:17px;line-height:1.5;font-weight:600;color:var(--ink-900);}
.card-text{font-size:14px;line-height:1.7;color:var(--ink-600);}
.card-foot{margin-top:auto;padding-top:6px;}
@media (max-width:767px){.grid-2{grid-template-columns:1fr;}}

/* ============ 深色流程区 ============ */
.dark-sec{background:var(--brand-900);color:#fff;scroll-margin-top:96px;}
.dark-sec .sec-title{color:#fff;}
.dark-sec .sec-sub{color:rgba(255,255,255,.72);}
.dark-sec .sec-eyebrow{background:rgba(255,255,255,.12);color:#fff;}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.step{
  position:relative;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-lg);
  padding:26px 22px;
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.step:hover{background:rgba(255,255,255,.1);transform:translateY(-3px);}
.step-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:50%;
  background:var(--accent-500);color:#fff;
  font-size:14px;font-weight:700;
  margin-bottom:14px;
}
.step h3{font-size:17px;line-height:1.5;font-weight:600;color:#fff;margin-bottom:8px;}
.step p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);}
@media (max-width:991px){.steps{grid-template-columns:repeat(2,1fr);}}
@media (max-width:575px){.steps{grid-template-columns:1fr;}}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-acc .accordion-item{
  border:0;
  background:var(--surface);
  border-radius:var(--r-md)!important;
  margin-bottom:12px;
  box-shadow:var(--shadow-sm);
  overflow:hidden;
}
.faq-acc .accordion-button{
  font-size:16px;
  font-weight:600;
  color:var(--ink-900);
  background:var(--surface);
  padding:20px;
  box-shadow:none!important;
  gap:14px;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand-700);background:var(--surface);}
.faq-acc .accordion-button::after{
  content:"+";
  background-image:none;
  width:28px;height:28px;flex:0 0 28px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  background-color:var(--brand-100);
  color:var(--brand-700);
  font-size:18px;font-weight:600;line-height:1;
  margin-left:auto;
  transition:transform .18s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{
  content:"+";
  transform:rotate(45deg);
  background-color:var(--brand-500);
  color:#fff;
}
.faq-acc .accordion-body{
  padding:0 20px 20px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-600);
}

/* ============ 胶囊链接组 ============ */
.pill-nav{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  padding-top:8px;
}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  height:42px;
  padding:0 20px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-700);
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--shadow-sm);
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),border-color .18s var(--ease);
}
.pill:hover{background:var(--brand-100);border-color:var(--brand-100);color:var(--brand-500);transform:translateY(-2px);}
.pill i{font-size:12px;color:var(--brand-500);}

/* ============ 底部转化条 ============ */
.cta-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  background:var(--brand-100);
  border:1px solid #D3E6F0;
  border-radius:var(--r-lg);
  padding:32px 36px;
  scroll-margin-top:96px;
}
.cta-bar h2{font-size:clamp(20px,2.4vw,24px);font-weight:700;line-height:1.4;color:var(--ink-900);margin-bottom:8px;}
.cta-bar p{font-size:15px;line-height:1.8;color:var(--ink-600);max-width:620px;}
@media (max-width:767px){
  .cta-bar{flex-direction:column;align-items:flex-start;padding:26px 22px;}
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--brand-900);
  color:rgba(255,255,255,.72);
  padding-top:64px;
  margin-top:24px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand-text{font-size:17px;font-weight:700;color:#fff;}
.footer-brand-text span{
  font-size:12px;font-weight:600;color:#fff;
  background:rgba(255,255,255,.14);
  border-radius:var(--r-pill);
  padding:2px 8px;margin-left:6px;letter-spacing:.04em;
}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);max-width:340px;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-col a:hover{color:#fff;}
.footer-meta{display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(255,255,255,.72);}
.footer-meta i{color:var(--brand-500);margin-right:8px;}
.footer-bottom{
  margin-top:48px;
  border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0;
  display:flex;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.55);
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:repeat(2,1fr);}
  .site-footer p{max-width:none;}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:1030;
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--shadow-lg);
  opacity:0;
  visibility:hidden;
  transform:translateY(12px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta .btn-brand,.float-cta .btn-outline-brand{height:42px;padding:0 18px;font-size:14px;}
@media (max-width:767px){
  body{padding-bottom:72px;}
  .float-cta{
    left:0;right:0;bottom:0;
    padding:8px 12px calc(8px + env(safe-area-inset-bottom));
    border-radius:0;
    border-left:0;border-right:0;border-bottom:0;
    gap:8px;
    justify-content:space-between;
    transform:translateY(0);
  }
  .float-cta .btn-brand,.float-cta .btn-outline-brand{flex:1;height:44px;padding:0 10px;}
  .float-cta.is-visible{transform:translateY(0);}
}

/* ============ 滚动进场 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1!important;transform:none!important;}
}

/* roulang page: category2 */
:root{
  --brand-900:#0C3550;
  --brand-700:#14577D;
  --brand-500:#1D7FB0;
  --brand-100:#E6F1F7;
  --accent-500:#EA6A2A;
  --accent-600:#D2571F;
  --accent-100:#FDEEE5;
  --mint-500:#2FA37C;
  --ink-900:#14212C;
  --ink-600:#4E6070;
  --ink-400:#8695A3;
  --line:#E2E9EF;
  --surface:#FFFFFF;
  --canvas:#F5F8FA;
  --canvas-2:#EDF3F7;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --shadow-sm:0 1px 2px rgba(20,33,44,.06);
  --shadow-md:0 6px 18px rgba(20,33,44,.08);
  --shadow-lg:0 18px 44px rgba(16,58,85,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#1D7FB0;
  --bs-primary-rgb:29,127,176;
  --bs-body-color:#14212C;
  --bs-body-bg:#FFFFFF;
  --bs-border-color:#E2E9EF;
  --bs-border-radius:14px;
  --bs-link-color:#1D7FB0;
  --bs-link-hover-color:#14577D;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-900);
  background:var(--surface);
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-500);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--brand-700);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px;}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.section{padding:96px 0;scroll-margin-top:96px;}
.section--tight{padding:72px 0;}
.section--canvas{background:var(--canvas);}

/* ============ Dock 导航 ============ */
.dock-header{position:sticky;top:0;z-index:1040;padding:16px 20px 0;pointer-events:none;}
.dock{
  pointer-events:auto;
  max-width:1120px;margin:0 auto;min-height:60px;
  display:flex;align-items:center;gap:18px;
  padding:0 20px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--line);box-shadow:var(--shadow-md);
  transition:min-height .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.dock.is-scrolled{min-height:52px;box-shadow:var(--shadow-lg);background:rgba(255,255,255,.94);}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink-900);}
.brand:hover{color:var(--ink-900);}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:12px;background:var(--brand-100);}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;display:flex;align-items:baseline;gap:6px;white-space:nowrap;}
.brand-sub{font-size:11px;font-weight:600;color:var(--brand-700);background:var(--brand-100);padding:3px 7px;border-radius:var(--r-pill);letter-spacing:.04em;}
.dock-menu{display:flex;align-items:center;gap:4px;margin-left:auto;}
.dock-link{
  position:relative;display:inline-block;padding:9px 12px;border-radius:var(--r-pill);
  font-size:15px;color:var(--ink-600);white-space:nowrap;transition:color .18s var(--ease),background .18s var(--ease);
}
.dock-link::after{
  content:"";position:absolute;left:50%;bottom:2px;width:0;height:2px;border-radius:2px;
  background:var(--brand-500);transform:translateX(-50%);transition:width .2s var(--ease);
}
.dock-link:hover{color:var(--brand-700);background:var(--brand-100);}
.dock-link.is-active{color:var(--brand-500);font-weight:600;}
.dock-link.is-active::after{width:16px;}
.dock-tools{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-pill);background:var(--surface);color:var(--brand-700);
  cursor:pointer;transition:background .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.icon-btn:hover{background:var(--brand-100);transform:translateY(-1px);box-shadow:var(--shadow-sm);}
.icon-btn:active{transform:none;}
.dock-search{
  display:none;max-width:1120px;margin:10px auto 0;pointer-events:auto;
  background:rgba(255,255,255,.96);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-md);padding:12px;
}
.dock-search.is-open{display:block;}
.dock-search .form-control{border-radius:10px;height:46px;border:1px solid var(--line);font-size:15px;}
.dock-search .form-control:focus{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(29,127,176,.12);}
.dock-drawer{
  display:none;max-width:1120px;margin:10px auto 0;pointer-events:auto;
  background:rgba(255,255,255,.97);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-lg);padding:10px;
}
.dock-drawer.is-open{display:block;}
.dock-drawer a{
  display:flex;align-items:center;height:48px;padding:0 16px;border-radius:var(--r-md);
  font-size:15px;color:var(--ink-600);
}
.dock-drawer a:hover{background:var(--brand-100);color:var(--brand-700);}
.dock-drawer a.is-active{color:var(--brand-500);font-weight:600;background:var(--brand-100);}

/* ============ 按钮 ============ */
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border:none;border-radius:var(--r-pill);
  background:var(--accent-500);color:#fff;font-size:15px;font-weight:600;letter-spacing:.01em;
  cursor:pointer;transition:background .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-brand:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md);}
.btn-brand:active{transform:none;box-shadow:none;}
.btn-brand--sm{height:38px;padding:0 18px;font-size:14px;}
.btn-outline-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border:1.5px solid var(--brand-500);border-radius:var(--r-pill);
  background:transparent;color:var(--brand-500);font-size:15px;font-weight:600;
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.btn-outline-brand:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-1px);}
.btn-outline-brand:active{transform:none;}
.btn-quiet{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-500);
  background-image:linear-gradient(var(--brand-500),var(--brand-500));
  background-repeat:no-repeat;background-position:0 100%;background-size:0 1px;
  transition:background-size .22s var(--ease),color .18s var(--ease);padding-bottom:2px;
}
.btn-quiet:hover{color:var(--brand-700);background-size:100% 1px;}

/* ============ 徽章 / 标签 ============ */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;line-height:1;
  letter-spacing:.04em;padding:6px 10px;border-radius:var(--r-pill);
  background:var(--brand-100);color:var(--brand-700);
}
.badge-accent{background:var(--accent-100);color:var(--accent-600);}
.badge-mint{background:rgba(47,163,124,.12);color:var(--mint-500);}
.pill-tag{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--surface);color:var(--ink-600);font-size:14px;
  transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.pill-tag:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--brand-100);}

/* ============ 页面头 ============ */
.page-head{background:var(--canvas-2);border-bottom:1px solid var(--line);padding:32px 0 44px;}
.crumb{font-size:13px;color:var(--ink-400);display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:16px;}
.crumb a{color:var(--ink-400);}
.crumb a:hover{color:var(--brand-500);}
.crumb .sep{color:var(--line);}
.crumb .now{color:var(--ink-600);}
.page-head-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:end;}
.page-head h1{font-size:clamp(28px,4.4vw,44px);line-height:1.25;letter-spacing:-.01em;margin-bottom:14px;}
.page-head .lead{font-size:16px;line-height:1.85;color:var(--ink-600);max-width:34em;}
.head-note{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);padding:22px 24px;
}
.head-note h2{font-size:15px;font-weight:600;color:var(--brand-700);margin-bottom:10px;letter-spacing:.02em;}
.head-note p{font-size:14px;line-height:1.8;color:var(--ink-600);}
.metric-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  margin-top:36px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);overflow:hidden;
}
.metric-cell{padding:22px 24px;border-right:1px solid var(--line);}
.metric-cell:last-child{border-right:none;}
.metric-cell .num{font-size:26px;font-weight:700;color:var(--brand-500);line-height:1.2;}
.metric-cell .num span{font-size:14px;font-weight:600;color:var(--ink-600);margin-left:4px;}
.metric-cell .lab{font-size:13px;color:var(--ink-400);margin-top:6px;line-height:1.6;}

/* ============ 主布局：窄侧栏 + 条目列表 ============ */
.layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:32px;align-items:start;}
.side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);padding:22px;
  transition:box-shadow .2s var(--ease),transform .2s var(--ease);
}
.side-card:hover{box-shadow:var(--shadow-md);}
.side-card h3{font-size:15px;font-weight:600;color:var(--ink-900);margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--line);}
.side-list li + li{margin-top:2px;}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:9px 10px;border-radius:var(--r-sm);font-size:14px;color:var(--ink-600);
  transition:background .16s var(--ease),color .16s var(--ease);
}
.side-list a:hover{background:var(--brand-100);color:var(--brand-700);}
.side-list a i{font-size:11px;color:var(--ink-400);}
.side-cta{background:var(--brand-100);border-color:rgba(29,127,176,.18);}
.side-cta p{font-size:14px;line-height:1.75;color:var(--ink-600);margin-bottom:14px;}

.list-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;}
.list-head h2{font-size:clamp(22px,2.4vw,28px);line-height:1.3;}
.list-head p{font-size:14px;color:var(--ink-600);margin-top:8px;max-width:38em;}
.entry-list{display:flex;flex-direction:column;gap:16px;}
.entry{
  display:grid;grid-template-columns:188px minmax(0,1fr);gap:20px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);padding:16px;
  transition:box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
}
.entry:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);border-color:rgba(29,127,176,.28);}
.thumb{
  position:relative;width:100%;aspect-ratio:3/2;border-radius:var(--r-md);
  overflow:hidden;background:rgba(29,127,176,.08);
}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.entry:hover .thumb img{transform:scale(1.03);}
.thumb::before{
  content:"";position:absolute;inset:0;background:rgba(29,127,176,.12);opacity:0;transition:opacity .2s var(--ease);
}
.entry:hover .thumb::before{opacity:1;}
.thumb .ph{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  color:rgba(29,127,176,.5);font-size:22px;
}
.entry-body{display:flex;flex-direction:column;gap:8px;min-width:0;}
.entry-top{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.entry-body h3{font-size:17px;font-weight:600;line-height:1.5;}
.entry-body h3 a{color:var(--ink-900);}
.entry-body h3 a:hover{color:var(--brand-500);}
.entry-body p{font-size:14px;line-height:1.75;color:var(--ink-600);margin:0;}
.entry-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;font-size:13px;color:var(--ink-400);
  margin-top:auto;padding-top:8px;border-top:1px dashed var(--line);
}
.entry-meta span{display:inline-flex;align-items:center;gap:6px;}

/* ============ 流程 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);padding:26px 24px;
  transition:box-shadow .2s var(--ease),transform .2s var(--ease);
}
.step:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);}
.step .idx{
  display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:var(--r-pill);
  background:var(--brand-100);color:var(--brand-700);font-size:14px;font-weight:700;margin-bottom:16px;
}
.step h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.step p{font-size:14px;line-height:1.75;color:var(--ink-600);margin:0;}

.sec-head{max-width:720px;margin-bottom:40px;}
.sec-head .kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.06em;
  color:var(--brand-700);background:var(--brand-100);padding:6px 12px;border-radius:var(--r-pill);margin-bottom:14px;
}
.sec-head h2{font-size:clamp(24px,3vw,32px);line-height:1.3;margin-bottom:12px;}
.sec-head p{font-size:15px;line-height:1.8;color:var(--ink-600);}

/* ============ FAQ ============ */
.faq-acc{max-width:860px;margin:0 auto;}
.faq-acc .accordion-item{
  border:1px solid var(--line);border-radius:var(--r-md) !important;background:var(--surface);
  box-shadow:var(--shadow-sm);overflow:hidden;margin-bottom:12px;
}
.faq-acc .accordion-item:last-child{margin-bottom:0;}
.faq-acc .accordion-button{
  position:relative;width:100%;padding:18px 56px 18px 20px;font-size:16px;font-weight:600;color:var(--ink-900);
  background:var(--surface);border:none;box-shadow:none;line-height:1.6;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand-700);background:var(--surface);box-shadow:none;}
.faq-acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand-500);outline-offset:-2px;}
.faq-acc .accordion-button::after{
  content:"";position:absolute;right:20px;top:50%;width:14px;height:14px;margin:0;
  transform:translateY(-50%);background-color:transparent;
  background-image:linear-gradient(var(--brand-500),var(--brand-500)),linear-gradient(var(--brand-500),var(--brand-500));
  background-position:center center,center center;
  background-size:14px 2px,2px 14px;background-repeat:no-repeat;
  transition:transform .18s var(--ease),background-size .18s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(180deg);background-size:14px 2px,2px 0;}
.faq-acc .accordion-body{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--ink-600);}

/* ============ CTA 横条 ============ */
.cta-band{
  background:var(--brand-100);border:1px solid rgba(29,127,176,.16);border-radius:var(--r-lg);
  padding:34px 36px;display:flex;align-items:center;justify-content:space-between;gap:26px;
  box-shadow:var(--shadow-sm);
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);line-height:1.35;margin-bottom:8px;}
.cta-band p{font-size:14px;line-height:1.75;color:var(--ink-600);margin:0;max-width:46em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto;}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:1030;
  width:46px;height:46px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:rgba(255,255,255,.94);color:var(--brand-700);box-shadow:var(--shadow-md);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand-100);}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.7);padding:72px 0 28px;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand-text{font-size:17px;font-weight:700;color:#fff;display:flex;align-items:baseline;gap:6px;}
.footer-brand-text span{font-size:11px;font-weight:600;color:#fff;background:rgba(255,255,255,.14);padding:3px 7px;border-radius:var(--r-pill);letter-spacing:.04em;}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col ul li + li{margin-top:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7);}
.footer-col a:hover{color:#fff;}
.footer-meta{display:flex;flex-direction:column;gap:12px;font-size:14px;color:rgba(255,255,255,.7);}
.footer-meta i{color:var(--accent-500);margin-right:8px;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:991.98px){
  .section{padding:72px 0;}
  .dock-menu{display:none;}
  .dock-drawer{display:none;}
  .dock-tools .btn-brand--sm{display:none;}
  .page-head-grid{grid-template-columns:1fr;gap:26px;}
  .layout{grid-template-columns:1fr;}
  .side{position:static;}
  .steps{grid-template-columns:1fr;gap:16px;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .metric-strip{grid-template-columns:1fr 1fr;}
  .metric-cell:nth-child(2){border-right:none;}
  .metric-cell:nth-child(1),.metric-cell:nth-child(2){border-bottom:1px solid var(--line);}
}
@media (max-width:767.98px){
  .section{padding:56px 0;}
  .entry{grid-template-columns:1fr;gap:14px;padding:14px;}
  .thumb{aspect-ratio:16/9;}
  .cta-band{padding:26px 22px;}
  .metric-cell{padding:18px;}
  .metric-cell .num{font-size:22px;}
}
@media (max-width:575.98px){
  .wrap{padding:0 16px;}
  .dock-header{padding:10px 12px 0;}
  .dock{padding:0 14px;gap:10px;}
  .brand-text{font-size:15px;}
  .brand-sub{display:none;}
  body{font-size:15px;}
  .metric-strip{grid-template-columns:1fr;}
  .metric-cell{border-right:none;border-bottom:1px solid var(--line);}
  .metric-cell:last-child{border-bottom:none;}
  .cta-actions{width:100%;}
  .cta-actions .btn-brand,.cta-actions .btn-outline-brand{flex:1 1 100%;}
  .to-top{right:14px;bottom:18px;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
  .entry:hover,.step:hover,.side-card:hover{transform:none;}
}