/* roulang page: index */
:root{
  --brand:#1557C0;
  --brand-deep:#0B3A86;
  --brand-soft:#E8F0FD;
  --accent:#FF6A2B;
  --accent-hover:#E2571B;
  --mint:#0FBFA0;
  --ink:#101B2E;
  --ink-2:#4A5A72;
  --ink-3:#8695AB;
  --line:#E2E9F2;
  --line-soft:#EFF3F8;
  --bg:#F6F9FD;
  --card:#FFFFFF;
  --dark:#0B1F3A;
  --danger:#D64545;
  --r-card:16px;
  --r-img:12px;
  --r-btn:12px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(16,27,46,.04), 0 8px 24px -12px rgba(21,87,192,.14);
  --sh-2:0 14px 32px -14px rgba(21,87,192,.26);
  --sh-3:0 20px 48px -18px rgba(11,31,58,.28);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-2);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea{font-family:inherit;font-size:inherit}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1024px){.container{padding:0 32px}}
@media (min-width:1440px){.container{max-width:1280px}}
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:96px 0}}
.section-tight{padding:48px 0}
@media (min-width:1024px){.section-tight{padding:72px 0}}

/* 标题体系 */
.h1{font-size:clamp(30px,4.2vw,52px);line-height:1.18;font-weight:800;letter-spacing:-.01em;color:var(--ink);margin:0}
.h2{font-size:clamp(24px,2.4vw,34px);line-height:1.25;font-weight:700;color:var(--ink);margin:0}
.h3{font-size:20px;line-height:1.35;font-weight:700;color:var(--ink);margin:0}
@media (min-width:1024px){.h3{font-size:22px}}
.card-title{font-size:17px;line-height:1.45;font-weight:700;color:var(--ink);margin:0}
@media (min-width:1024px){.card-title{font-size:18px}}
.lead{font-size:16px;line-height:1.85;color:var(--ink-2);max-width:800px}
.meta{font-size:13px;line-height:1.7;color:var(--ink-3)}
.small{font-size:14px;line-height:1.75;color:var(--ink-2)}
.sec-head{display:flex;flex-direction:column;gap:16px;margin-bottom:36px}
@media (min-width:768px){.sec-head{flex-direction:row;align-items:flex-end;justify-content:space-between;gap:32px}}
.sec-head-main{max-width:820px}
.h2-bar{position:relative;padding-left:16px}
.h2-bar::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:2px;background:var(--brand)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-btn);font-weight:600;cursor:pointer;border:1.5px solid transparent;transition:background-color .18s ease-out, color .18s ease-out, border-color .18s ease-out, transform .18s ease-out, box-shadow .18s ease-out;min-height:44px;text-align:center}
.btn-primary{background:var(--accent);color:#fff;padding:0 26px;font-size:16px;min-height:48px;box-shadow:0 8px 20px -12px rgba(255,106,43,.7)}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 14px 28px -14px rgba(226,87,27,.75)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px -10px rgba(226,87,27,.6)}
.btn-secondary{background:#fff;color:var(--brand);border-color:var(--brand);padding:0 24px;font-size:15px}
.btn-secondary:hover{background:var(--brand-soft)}
.btn-secondary:active{background:#dbe8fb}
.btn-ghost{color:var(--brand);text-decoration:underline;text-underline-offset:3px;font-weight:600;transition:color .18s ease-out}
.btn-ghost:hover{color:var(--accent)}
.btn-block{width:100%}
.btn:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible,button:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-sm{min-height:42px;font-size:14px;padding:0 20px}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .18s ease-out}
.site-header.is-scrolled{box-shadow:0 8px 24px -16px rgba(11,31,58,.18)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:70px}
.logo{display:inline-flex;align-items:center;gap:10px;padding:8px 0}
.logo-mark{width:38px;height:38px;border-radius:12px;background:var(--brand);display:flex;align-items:center;justify-content:center;flex:0 0 auto;box-shadow:0 6px 16px -10px rgba(21,87,192,.8)}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-main{font-size:19px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.logo-sub{font-size:10.5px;font-weight:600;color:var(--brand);letter-spacing:.08em}
.main-nav{display:none}
@media (min-width:1024px){.main-nav{display:block}}
.nav-list{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}
.nav-link{position:relative;display:inline-flex;align-items:center;min-height:44px;padding:0 12px;font-size:15px;font-weight:600;color:var(--ink-2);border-radius:10px;transition:color .18s ease-out,background-color .18s ease-out}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{content:"";position:absolute;left:50%;bottom:6px;transform:translateX(-50%);width:20px;height:3px;border-radius:2px;background:var(--accent)}
.nav-right{display:flex;align-items:center;gap:10px}
.mega-wrap{position:relative;display:none}
@media (min-width:1024px){.mega-wrap{display:block}}
.mega-trigger{display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:0 14px;background:#fff;border:1.5px solid var(--line);border-radius:12px;color:var(--ink-2);font-weight:600;font-size:14px;cursor:pointer;transition:border-color .18s ease-out,color .18s ease-out,background-color .18s ease-out}
.mega-trigger:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.mega-panel{position:absolute;right:0;top:calc(100% + 12px);width:700px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-3);padding:22px;display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:20px;opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity .15s ease-out,transform .15s ease-out,visibility .15s ease-out}
.mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel,.mega-wrap.is-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col-title{font-size:12px;font-weight:700;color:var(--ink-3);letter-spacing:.06em;margin:0 0 10px}
.mega-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.mega-link{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;font-size:14px;font-weight:600;color:var(--ink-2);transition:background-color .18s ease-out,color .18s ease-out}
.mega-link:hover{background:var(--brand-soft);color:var(--brand)}
.mega-dot{width:26px;height:26px;border-radius:8px;background:var(--brand-soft);display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.mega-dot span{width:8px;height:8px;border-radius:3px;background:var(--brand);display:block}
.mega-post{display:block;padding:9px 10px;border-radius:10px;transition:background-color .18s ease-out}
.mega-post:hover{background:var(--brand-soft)}
.mega-post-title{font-size:14px;font-weight:600;color:var(--ink);line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mega-entry{background:var(--brand-soft);border-radius:14px;padding:18px;display:flex;flex-direction:column;gap:10px}
.nav-toggle{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:0 10px;background:#fff;border:1.5px solid var(--line);border-radius:12px;cursor:pointer}
@media (min-width:1024px){.nav-toggle{display:none}}
.nav-toggle i{display:block;height:2px;background:var(--ink);border-radius:2px;transition:transform .18s ease-out,opacity .18s ease-out}
.nav-toggle.is-open i:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open i:nth-child(2){opacity:0}
.nav-toggle.is-open i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:14px 0 22px}
.mobile-drawer.is-open{display:block}
@media (min-width:1024px){.mobile-drawer.is-open{display:none}}
.drawer-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}
.drawer-link{display:flex;align-items:center;justify-content:space-between;min-height:48px;padding:0 12px;border-radius:12px;font-weight:600;color:var(--ink-2);background:var(--line-soft)}
.drawer-link:hover{background:var(--brand-soft);color:var(--brand)}
.drawer-note{margin:14px 0 0;padding:14px 16px;background:var(--brand-soft);border-radius:12px}

/* Hero */
.hero{position:relative;background:#fff;border-bottom:1px solid var(--line);overflow:hidden}
.hero-grid{display:grid;gap:36px;padding:44px 0 56px}
@media (min-width:1024px){.hero-grid{grid-template-columns:55% 45%;gap:48px;align-items:center;padding:72px 0 84px}}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:700;border-radius:999px;padding:6px 14px;margin-bottom:18px}
.hero-eyebrow span{width:7px;height:7px;border-radius:50%;background:var(--accent);display:block}
.hero-sub{margin-top:18px;font-size:16.5px;line-height:1.85;color:var(--ink-2);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
@media (max-width:639px){.hero-actions .btn{width:100%}}
.trust-list{display:grid;gap:12px;margin:28px 0 0;padding:0;list-style:none}
@media (min-width:640px){.trust-list{grid-template-columns:repeat(3,1fr)}}
.trust-item{display:flex;align-items:center;gap:10px;font-size:14px;font-weight:600;color:var(--ink-2)}
.trust-icon{width:28px;height:28px;border-radius:9px;background:var(--brand-soft);display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.trust-icon svg{width:15px;height:15px}
.hero-media{position:relative}
.hero-img{width:100%;border-radius:var(--r-card);object-fit:cover;box-shadow:var(--sh-1);max-height:420px}
@media (max-width:639px){.hero-img{max-height:220px;object-fit:cover}}
.hero-float{position:absolute;right:14px;bottom:-18px;width:172px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;box-shadow:var(--sh-3)}
@media (max-width:639px){.hero-float{position:static;width:100%;margin-top:14px;bottom:auto}}
.hero-float strong{display:block;font-size:26px;font-weight:800;color:var(--accent);line-height:1.1}
.hero-float span{font-size:12.5px;color:var(--ink-3)}

/* 卡片通用 */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:#d5e2f6}
.card-body{padding:22px}
.badge{display:inline-flex;align-items:center;font-size:11.5px;font-weight:700;color:#fff;background:var(--brand);border-radius:999px;padding:3px 10px;letter-spacing:.02em}
.badge-mint{background:var(--mint)}
.tag{display:inline-flex;align-items:center;font-size:12.5px;font-weight:600;color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:5px 12px;transition:background-color .18s ease-out,color .18s ease-out}
.tag:hover{background:var(--brand);color:#fff}
.divider{height:1px;background:var(--line-soft);border:0;margin:0}

/* 入口错落卡组 */
.entry-grid{display:grid;gap:22px}
@media (min-width:1024px){.entry-grid{grid-template-columns:1.4fr 1fr;grid-template-rows:auto auto}}
.entry-feature{grid-row:span 2;display:flex;flex-direction:column;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:box-shadow .18s ease-out,transform .18s ease-out}
.entry-feature:hover{box-shadow:var(--sh-2);transform:translateY(-3px)}
.entry-feature-img{width:100%;height:220px;object-fit:cover}
@media (min-width:1024px){.entry-feature-img{height:262px}}
.entry-feature-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.entry-mini{display:flex;gap:16px;padding:22px;align-items:flex-start}
.entry-icon{width:40px;height:40px;border-radius:12px;background:var(--brand-soft);display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.entry-icon svg{width:20px;height:20px}

/* 数据带 */
.data-band{background:var(--dark);color:#fff;position:relative;overflow:hidden}
.data-band::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 2px,transparent 2px 14px);opacity:.6;pointer-events:none}
.data-band .container{position:relative}
.data-grid{display:grid;gap:24px;grid-template-columns:repeat(2,1fr);padding:44px 0}
@media (min-width:1024px){.data-grid{grid-template-columns:repeat(4,1fr);padding:64px 0;gap:32px}}
.data-item{padding-left:16px;border-left:2px solid rgba(255,255,255,.14)}
.data-num{font-size:32px;font-weight:800;color:#fff;line-height:1.1}
@media (min-width:1024px){.data-num{font-size:40px}}
.data-num em{font-style:normal;color:var(--accent);font-size:.6em;margin-left:4px;font-weight:700}
.data-label{font-size:13px;color:rgba(255,255,255,.66);margin-top:8px;line-height:1.7}
.data-band-title{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.08em;padding-top:44px}
@media (min-width:1024px){.data-band-title{padding-top:64px}}

/* 场景图文交替 */
.scene{display:grid;gap:26px;align-items:center}
@media (min-width:1024px){.scene{grid-template-columns:1fr 1fr;gap:56px}.scene.reverse .scene-media{order:2}}
.scene-media img{width:100%;border-radius:var(--r-card);object-fit:cover;box-shadow:var(--sh-1);aspect-ratio:3/2}
.scene-body{display:flex;flex-direction:column;gap:14px}
.scene-list{list-style:none;margin:4px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}
.scene-list li{position:relative;padding-left:18px;font-size:15px;color:var(--ink-2)}
.scene-list li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--brand)}
.scene + .scene{margin-top:52px}
@media (min-width:1024px){.scene + .scene{margin-top:76px}}

/* 方案阶梯 */
.steps{display:grid;gap:20px;counter-reset:step}
@media (min-width:640px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.steps{grid-template-columns:repeat(4,1fr)}}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;overflow:hidden;box-shadow:var(--sh-1);transition:box-shadow .18s ease-out,transform .18s ease-out}
.step:hover{box-shadow:var(--sh-2);transform:translateY(-3px)}
.step-watermark{position:absolute;right:14px;top:2px;font-size:66px;font-weight:800;color:var(--brand-soft);line-height:1;font-variant-numeric:tabular-nums;pointer-events:none}
.step-dot{width:10px;height:10px;border-radius:50%;background:var(--accent);margin-bottom:16px}
.step-title{font-size:18px;font-weight:700;color:var(--ink);margin:0 0 8px;position:relative}
.step-text{font-size:15px;line-height:1.8;color:var(--ink-2);margin:0;position:relative}

/* 资讯卡 */
.news-grid{display:grid;gap:22px}
@media (min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr)}}
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out}
.news-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:#d5e2f6}
.news-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--brand-soft)}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-cover .badge{position:absolute;left:12px;top:12px}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-title{font-size:17px;font-weight:700;color:var(--ink);line-height:1.45;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .18s ease-out}
.news-card:hover .news-title{color:var(--brand)}
.news-summary{font-size:14px;line-height:1.75;color:var(--ink-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:12px;border-top:1px solid var(--line-soft)}
.news-more{font-size:13.5px;font-weight:600;color:var(--brand);transition:color .18s ease-out}
.news-card:hover .news-more{color:var(--accent)}
.news-card-link{display:flex;flex-direction:column;flex:1;color:inherit}

/* 空态 */
.empty-state{grid-column:1/-1;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);padding:44px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px}
.empty-icon{width:56px;height:56px;border-radius:50%;background:var(--brand-soft);display:flex;align-items:center;justify-content:center}
.empty-icon svg{width:26px;height:26px}
.pager-slot{margin-top:28px}

/* FAQ */
.faq-layout{display:grid;gap:32px}
@media (min-width:1024px){.faq-layout{grid-template-columns:1fr 2fr;gap:56px;align-items:start}}
.faq-aside{display:flex;flex-direction:column;gap:16px}
.faq-contact{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:10px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:52px;padding:16px 20px;font-size:16.5px;font-weight:700;color:var(--ink);transition:color .18s ease-out}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-mark{position:relative;width:16px;height:16px;flex:0 0 auto}
.faq-mark::before,.faq-mark::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .18s ease-out}
.faq-mark::before{left:0;top:7px;width:16px;height:2px}
.faq-mark::after{left:7px;top:0;width:2px;height:16px}
.faq-item[open] .faq-mark::after{transform:scaleY(0)}
.faq-item[open] summary{color:var(--brand);box-shadow:inset 3px 0 0 var(--mint)}
.faq-answer{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--ink-2)}

/* 表单 */
.contact-wrap{display:grid;gap:24px;background:var(--brand-soft);border:1px solid #d5e2f6;border-radius:20px;padding:28px}
@media (min-width:1024px){.contact-wrap{grid-template-columns:1.35fr 1fr;gap:32px;padding:40px}}
.form-card{background:#fff;border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1)}
@media (min-width:768px){.form-card{padding:28px}}
.form-row{margin-bottom:16px}
.form-label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:6px}
.form-input{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--r-input);background:#fff;color:var(--ink);transition:border-color .18s ease-out,box-shadow .18s ease-out}
.form-input::placeholder{color:var(--ink-3)}
.form-input:focus{outline:none;border-color:var(--brand);border-width:1.5px;box-shadow:0 0 0 3px var(--brand-soft)}
.form-hint{font-size:12.5px;color:var(--ink-3);margin-top:6px}
.form-tip{margin-top:14px;font-size:14px;color:var(--mint);font-weight:600}
.info-card{background:#fff;border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:16px}
.info-line{display:flex;gap:12px;align-items:flex-start}
.info-line strong{display:block;font-size:14px;color:var(--ink);font-weight:700}
.info-line span{font-size:14px;color:var(--ink-2)}

/* 页脚 */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);margin-top:0}
.footer-grid{display:grid;gap:32px;padding:52px 0 36px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding:68px 0 44px}}
.footer-logo{display:inline-flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-logo .logo-mark{box-shadow:none}
.footer-logo-text{display:flex;flex-direction:column;line-height:1.15}
.footer-logo-main{font-size:17px;font-weight:800;color:#fff}
.footer-logo-sub{font-size:10.5px;font-weight:600;color:#8fb6f2;letter-spacing:.08em}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin:0 0 14px}
.footer-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-link{font-size:14px;color:rgba(255,255,255,.72);display:inline-block;transition:color .18s ease-out,transform .18s ease-out}
.footer-link:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0 26px;display:flex;flex-direction:column;gap:8px;font-size:12.5px;color:rgba(255,255,255,.56)}
@media (min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}

/* roulang page: article */
:root{
  --brand:#1557C0;
  --brand-deep:#0B3A86;
  --brand-soft:#E8F0FD;
  --accent:#FF6A2B;
  --accent-hover:#E2571B;
  --mint:#0FBFA0;
  --ink:#101B2E;
  --ink-2:#4A5A72;
  --ink-3:#8695AB;
  --line:#E2E9F2;
  --line-soft:#EFF3F8;
  --bg:#F6F9FD;
  --card:#FFFFFF;
  --dark:#0B1F3A;
  --danger:#D64545;
  --r-card:16px;
  --r-img:12px;
  --r-btn:11px;
  --sh-1:0 1px 2px rgba(16,27,46,.04), 0 8px 24px -12px rgba(21,87,192,.14);
  --sh-2:0 14px 32px -14px rgba(21,87,192,.26);
  --sh-3:0 20px 48px -18px rgba(11,31,58,.28);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  background:var(--bg);
  color:var(--ink-2);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}
@media(min-width:1440px){.container{max-width:1280px}}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200}
.skip-link:focus{left:0}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .18s ease-out}
.site-header.is-scrolled{box-shadow:0 8px 24px -16px rgba(11,31,58,.18)}
.header-inner{display:flex;align-items:center;gap:20px;height:70px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:38px;height:38px;border-radius:11px;background:var(--brand);display:inline-flex;align-items:center;justify-content:center;box-shadow:0 8px 18px -10px rgba(21,87,192,.7)}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-text-main{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.logo-text-sub{font-size:9.5px;font-weight:600;color:var(--brand);letter-spacing:.06em;margin-top:2px}
.main-nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:4px}
.nav-link{position:relative;display:inline-flex;align-items:center;height:44px;padding:0 12px;font-size:15px;font-weight:600;color:var(--ink-2);border-radius:10px;transition:color .18s ease-out,background .18s ease-out}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:2px;width:20px;height:3px;border-radius:2px;background:var(--accent)}
.header-right{display:flex;align-items:center;gap:10px;flex-shrink:0}
.mega-wrap{position:relative}
.mega-trigger{display:inline-flex;align-items:center;gap:6px;height:44px;padding:0 14px;font-size:14px;font-weight:600;color:var(--ink-2);border:1px solid var(--line);border-radius:11px;transition:all .18s ease-out}
.mega-trigger:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-soft)}
.mega-trigger .chev{transition:transform .18s ease-out}
.mega-wrap:hover .mega-trigger .chev,.mega-wrap:focus-within .mega-trigger .chev{transform:rotate(180deg)}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 12px);width:660px;
  background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh-3);
  padding:20px;display:grid;grid-template-columns:1.1fr 1.1fr 1fr;gap:18px;
  opacity:0;visibility:hidden;transform:translateY(6px);
  transition:opacity .15s ease-out,transform .15s ease-out,visibility .15s;
}
.mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col-title{font-size:13px;font-weight:700;color:var(--ink-3);margin-bottom:10px;letter-spacing:.04em}
.mega-item{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;transition:background .18s ease-out}
.mega-item:hover{background:var(--brand-soft)}
.mega-ico{width:28px;height:28px;border-radius:8px;background:var(--brand-soft);color:var(--brand);display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;flex-shrink:0}
.mega-item-text{font-size:14px;font-weight:600;color:var(--ink);line-height:1.4}
.mega-item-sub{font-size:12px;color:var(--ink-3);line-height:1.5}
.mega-news{display:block;padding:9px 10px;border-radius:10px;transition:background .18s ease-out}
.mega-news:hover{background:var(--brand-soft)}
.mega-news h4{font-size:14px;font-weight:600;color:var(--ink);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mega-news span{font-size:12px;color:var(--ink-3)}
.mega-card{background:var(--brand-soft);border-radius:14px;padding:16px;display:flex;flex-direction:column;gap:10px}
.mega-card h4{font-size:15px;font-weight:700;color:var(--ink)}
.mega-card p{font-size:13px;line-height:1.7;color:var(--ink-2)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:11px;border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle i{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out}
.nav-toggle.is-open i:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open i:nth-child(2){opacity:0}
.nav-toggle.is-open i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:12px 0 20px}
.mobile-drawer.is-open{display:block}
.drawer-group{padding:6px 0}
.drawer-link{display:flex;align-items:center;min-height:46px;padding:0 6px;font-size:15px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--line-soft)}
.drawer-link.active{color:var(--brand)}
.drawer-sub{padding:6px 6px 0}
.drawer-sub a{display:block;min-height:42px;line-height:42px;font-size:14px;color:var(--ink-2)}
.drawer-sub a:hover{color:var(--brand)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--r-btn);font-size:15px;font-weight:700;white-space:nowrap;transition:all .18s ease-out;border:1.5px solid transparent}
.btn-sm{height:42px;padding:0 20px;font-size:14px}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 22px -14px rgba(255,106,43,.9)}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 16px 28px -14px rgba(255,106,43,.85)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-secondary{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-secondary:hover{background:var(--brand-soft)}
.btn-secondary:active{background:#D8E6FB}
.btn-link{color:var(--brand);font-weight:700;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.btn-link:hover{color:var(--accent);text-decoration-thickness:2px}
.btn:focus-visible,a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line-soft)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:13.5px;color:var(--ink-3)}
.crumb a{color:var(--ink-3)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#C6D2E2}
.crumb .current{color:var(--ink-2);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章布局 ---------- */
.article-stage{padding:36px 0 72px}
.article-layout{display:block}
.article-main{min-width:0}
.article-head{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:28px 24px 22px}
.cat-label{display:inline-flex;align-items:center;gap:9px;font-size:14px;font-weight:700;color:var(--brand);margin-bottom:14px}
.cat-label::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--brand)}
.article-title{font-size:clamp(26px,3.4vw,38px);font-weight:800;line-height:1.28;color:var(--ink);letter-spacing:-.01em;max-width:860px}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:16px;font-size:13px;color:var(--ink-3)}
.meta-row .dot{color:#C6D2E2}
.rule{height:1px;background:var(--line-soft);border:0;margin:20px 0 0}
.article-panel{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:28px 24px;margin-top:20px}
.article-body{max-width:820px;font-size:16.5px;line-height:1.9;color:var(--ink-2);text-align:left}
.article-body>*+*{margin-top:1.4em}
.article-body p{margin:1.4em 0 0}
.article-body h2{font-size:23px;font-weight:700;color:var(--ink);line-height:1.35;margin:2em 0 0;padding-left:14px;position:relative}
.article-body h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand)}
.article-body h3{font-size:19px;font-weight:700;color:var(--ink);line-height:1.4;margin:1.7em 0 0}
.article-body h4{font-size:17px;font-weight:700;color:var(--ink);margin:1.4em 0 0}
.article-body ul,.article-body ol{margin:1.2em 0 0;padding-left:4px}
.article-body li{position:relative;padding-left:22px;margin:10px 0}
.article-body ul li::before{content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--brand)}
.article-body ol{counter-reset:li}
.article-body ol li::before{counter-increment:li;content:counter(li);position:absolute;left:0;top:.12em;width:18px;height:18px;line-height:18px;text-align:center;font-size:12px;font-weight:700;color:var(--brand);background:var(--brand-soft);border-radius:50%}
.article-body blockquote{margin:1.6em 0 0;background:var(--brand-soft);border-left:3px solid var(--brand);border-radius:10px;padding:16px 20px;color:var(--ink-2)}
.article-body blockquote p{margin:0}
.article-body figure{margin:1.8em 0 0}
.article-body img{border-radius:var(--r-img);width:100%;height:auto}
.article-body figcaption{margin-top:10px;font-size:13px;color:var(--ink-3);text-align:center}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--accent)}
.article-body strong{color:var(--ink);font-weight:700}
.article-body table{font-size:15px;margin:1.6em 0 0;min-width:520px}
.article-body .table-scroll,.article-body table{display:block;overflow-x:auto}
.article-body th{background:var(--brand-soft);color:var(--ink);font-weight:700;text-align:left;padding:12px 14px;white-space:nowrap}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line-soft);color:var(--ink-2)}
.article-body code{background:var(--line-soft);border-radius:6px;padding:2px 6px;font-size:14px}

/* ---------- 空态 ---------- */
.empty-state{display:flex;flex-direction:column;align-items:center;text-align:center;gap:14px;padding:56px 20px}
.empty-ico{width:64px;height:64px;border-radius:50%;background:var(--brand-soft);display:flex;align-items:center;justify-content:center}
.empty-state p{font-size:15px;color:var(--ink-2)}

/* ---------- 相关推荐 ---------- */
.sect{margin-top:34px}
.sect-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:18px}
.sect-head h2{font-size:clamp(20px,2vw,24px);font-weight:700;color:var(--ink);padding-left:14px;position:relative}
.sect-head h2::before{content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:2px;background:var(--brand)}
.sect-head p{font-size:14px;color:var(--ink-3);margin-top:6px;padding-left:14px}
.card-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:transform .18s ease-out,box-shadow .18s ease-out}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.news-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--brand-soft)}
.news-cover img{width:100%;height:100%;object-fit:cover}
.badge{position:absolute;left:12px;top:12px;display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:var(--mint);color:#fff;font-size:11.5px;font-weight:700;letter-spacing:.02em}
.badge-brand{background:var(--brand)}
.news-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body h3{font-size:17px;font-weight:700;color:var(--ink);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .18s ease-out}
.news-card:hover .news-body h3{color:var(--brand)}
.news-body p{font-size:14px;line-height:1.7;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:10px;border-top:1px solid var(--line-soft);font-size:12.5px;color:var(--ink-3)}
.news-foot .more{color:var(--brand);font-weight:700}

/* ---------- 上下篇 ---------- */
.pn-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:768px){.pn-grid{grid-template-columns:repeat(2,1fr)}}
.pn-card{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh-1);padding:16px 18px;transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out}
.pn-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#CFDDF2}
.pn-arrow{width:38px;height:38px;border-radius:10px;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:800;flex-shrink:0}
.pn-card h3{font-size:15px;font-weight:600;color:var(--ink);line-height:1.5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pn-card span{font-size:12.5px;color:var(--ink-3)}
.pn-card:hover h3{color:var(--brand)}
.back-row{margin-top:22px;display:flex;justify-content:center}

/* ---------- 侧栏 ---------- */
.article-aside{display:none}
.aside-card{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh-1);padding:18px;margin-bottom:18px}
.aside-title{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:12px;padding-left:12px;position:relative}
.aside-title::before{content:"";position:absolute;left:0;top:3px;bottom:3px;width:3px;border-radius:2px;background:var(--accent)}
.aside-link{display:flex;align-items:center;justify-content:space-between;min-height:42px;font-size:14px;color:var(--ink-2);border-bottom:1px solid var(--line-soft)}
.aside-link:last-child{border-bottom:0}
.aside-link:hover{color:var(--brand)}
.hot-item{display:block;padding:10px 0;border-bottom:1px dashed var(--line)}
.hot-item:last-child{border-bottom:0}
.hot-item h4{font-size:14px;font-weight:600;color:var(--ink);line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hot-item:hover h4{color:var(--brand)}
.hot-item span{font-size:12px;color:var(--ink-3)}

@media(min-width:1280px){
  .article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:26px;align-items:start}
  .article-aside{display:block;position:sticky;top:92px}
  .article-body{max-width:820px}
}
@media(min-width:1024px) and (max-width:1279px){
  .article-body{max-width:820px;margin:0 auto}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);margin-top:64px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding:56px 0 36px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr);gap:36px;padding:64px 0 40px}}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.logo-mark{width:38px;height:38px;border-radius:11px;background:rgba(255,255,255,.1);display:inline-flex;align-items:center;justify-content:center}
.footer-logo-text{display:flex;flex-direction:column;line-height:1.1}
.footer-logo-main{font-size:17px;font-weight:800;color:#fff}
.footer-logo-sub{font-size:9.5px;font-weight:600;color:#8FB6EC;margin-top:2px;letter-spacing:.06em}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-list li{margin-bottom:2px}
.footer-link{display:inline-block;font-size:14px;color:rgba(255,255,255,.72);line-height:2;transition:color .18s ease-out,transform .18s ease-out}
.footer-link:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;font-size:12.5px;color:rgba(255,255,255,.6)}
.small{font-size:13px;line-height:1.8}

/* ---------- 响应式收缩 ---------- */
@media(max-width:1023px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .mega-wrap{display:none}
  .header-inner{height:64px}
  .article-head{padding:22px 18px}
  .article-panel{padding:22px 18px}
}
@media(max-width:640px){
  .article-stage{padding:24px 0 48px}
  .article-title{font-size:24px}
  .article-body{font-size:16px;line-height:1.9}
  .article-body h2{font-size:20px}
  .article-body h3{font-size:17.5px}
  .meta-row{font-size:12.5px}
  .btn{width:100%}
  .btn-inline{width:auto}
  .crumb .current{max-width:200px}
  .footer-grid{padding:44px 0 28px}
}

/* roulang page: category1 */
:root{
  --brand:#1557C0;
  --brand-deep:#0B3A86;
  --brand-soft:#E8F0FD;
  --accent:#FF6A2B;
  --accent-hover:#E2571B;
  --mint:#0FBFA0;
  --ink:#101B2E;
  --ink-2:#4A5A72;
  --ink-3:#8695AB;
  --line:#E2E9F2;
  --line-soft:#EFF3F8;
  --bg:#F6F9FD;
  --card:#FFFFFF;
  --dark:#0B1F3A;
  --danger:#D64545;
  --r-card:16px;
  --r-img:12px;
  --r-btn:11px;
  --sh-1:0 1px 2px rgba(16,27,46,.04), 0 8px 24px -12px rgba(21,87,192,.14);
  --sh-2:0 14px 32px -14px rgba(21,87,192,.26);
  --sh-panel:0 20px 48px -18px rgba(11,31,58,.28);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-2);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;transition:color .18s ease-out,background-color .18s ease-out,border-color .18s ease-out;}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 24px;}}
@media (min-width:1024px){.container{padding:0 32px;}}
@media (min-width:1440px){.container{max-width:1280px;}}
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-head{max-width:820px;margin-bottom:32px;}
.section-head p{font-size:15px;color:var(--ink-2);margin-top:10px;}
h1.hero-title{font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.18;letter-spacing:-.01em;color:var(--ink);}
h2{font-size:clamp(24px,2.4vw,34px);font-weight:700;line-height:1.25;color:var(--ink);letter-spacing:-.005em;}
h3{font-size:21px;font-weight:700;line-height:1.35;color:var(--ink);}
h2.rule{position:relative;padding-left:16px;}
h2.rule::before{content:"";position:absolute;left:0;top:.18em;width:4px;height:.92em;border-radius:2px;background:var(--brand);}
.lead{font-size:17px;line-height:1.85;color:var(--ink-2);max-width:760px;}
.muted{font-size:14px;line-height:1.7;color:var(--ink-3);}
.small{font-size:13px;line-height:1.7;}
.tag{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;}
.tag.mint{background:#E3F8F4;color:#0A8D77;}
.tag.accent{background:#FFEDE4;color:var(--accent-hover);}

/* ---------- 按钮体系 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);border:1.5px solid transparent;
  font-size:16px;font-weight:700;cursor:pointer;white-space:nowrap;
  transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
}
.btn-sm{height:42px;font-size:14px;padding:0 20px;border-radius:10px;}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 22px -12px rgba(255,106,43,.6);}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 16px 28px -14px rgba(255,106,43,.7);}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 16px -12px rgba(255,106,43,.6);}
.btn-secondary{background:#fff;border-color:var(--brand);color:var(--brand);}
.btn-secondary:hover{background:var(--brand-soft);}
.btn-secondary:active{transform:translateY(0);}
.btn-ghost{color:var(--brand);font-weight:700;text-decoration:underline;text-underline-offset:3px;padding:0;}
.btn-ghost:hover{color:var(--accent-hover);text-decoration-thickness:2px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:700;font-size:14px;}
.link-arrow:hover{color:var(--accent-hover);}
.link-arrow:hover .arw{transform:translateX(3px);}
.arw{transition:transform .18s ease-out;}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);}
.site-header.scrolled{box-shadow:0 8px 24px -16px rgba(11,31,58,.18);}
.nav-inner{display:flex;align-items:center;gap:20px;height:70px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;border-radius:10px;background:var(--brand);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-main{font-size:18px;font-weight:800;color:var(--ink);letter-spacing:-.01em;}
.brand-sub{font-size:11px;font-weight:600;color:var(--brand);letter-spacing:.08em;}
.main-nav{margin-left:auto;display:none;}
.nav-list{display:flex;align-items:center;gap:2px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 12px;
  font-size:14.5px;font-weight:600;color:var(--ink-2);border-radius:9px;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-link.active{color:var(--brand);}
.nav-link.active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:20px;height:3px;border-radius:2px;background:var(--accent);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:12px;}
.mega-wrap{position:relative;display:none;}
.mega-btn{
  display:inline-flex;align-items:center;gap:6px;height:42px;padding:0 16px;border-radius:10px;
  background:#fff;border:1.5px solid var(--line);color:var(--ink);font-size:14px;font-weight:600;cursor:pointer;
}
.mega-btn:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 10px);width:640px;background:#fff;border:1px solid var(--line);
  border-radius:16px;box-shadow:var(--sh-panel);padding:20px;display:grid;grid-template-columns:1fr 1fr 1.1fr;gap:18px;
  opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity .15s ease-out,transform .15s ease-out,visibility .15s;
}
.mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-col-title{font-size:12px;font-weight:700;color:var(--ink-3);letter-spacing:.06em;margin-bottom:8px;}
.mega-link{display:flex;align-items:flex-start;gap:8px;padding:9px 10px;border-radius:10px;font-size:14px;color:var(--ink-2);font-weight:600;}
.mega-link:hover{background:var(--brand-soft);color:var(--brand);}
.mega-dot{width:6px;height:6px;border-radius:50%;background:var(--brand);margin-top:9px;flex-shrink:0;}
.mega-card{background:var(--brand-soft);border-radius:14px;padding:16px;}
.mega-card h4{font-size:15px;font-weight:700;color:var(--ink);}
.mega-card p{font-size:13px;color:var(--ink-2);margin:6px 0 12px;line-height:1.7;}
.nav-burger{
  margin-left:auto;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer;background:#fff;
}
.nav-burger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s ease-out,opacity .2s ease-out;}
#navToggle:checked ~ .nav-inner .nav-burger span:nth-child(1){transform:translateY(7px) rotate(45deg);}
#navToggle:checked ~ .nav-inner .nav-burger span:nth-child(2){opacity:0;}
#navToggle:checked ~ .nav-inner .nav-burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.nav-drawer{display:none;border-top:1px solid var(--line-soft);background:#fff;padding:12px 0 20px;}
#navToggle:checked ~ .nav-drawer{display:block;}
.drawer-group-title{font-size:12px;font-weight:700;color:var(--ink-3);letter-spacing:.06em;padding:10px 16px 4px;}
.drawer-link{display:flex;align-items:center;justify-content:space-between;min-height:48px;padding:0 16px;font-size:15px;font-weight:600;color:var(--ink-2);border-bottom:1px solid var(--line-soft);}
.drawer-link:hover,.drawer-link.active{color:var(--brand);background:var(--brand-soft);}
@media (min-width:1024px){
  .main-nav{display:block;}
  .nav-burger{display:none;}
  .nav-drawer{display:none !important;}
  .mega-wrap{display:block;}
}
@media (max-width:1023px){
  .nav-actions .btn{display:none;}
}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-3);padding:22px 0 0;}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:var(--line);}
.crumb .current{color:var(--ink-2);}

/* ---------- Hero ---------- */
.hero{padding:28px 0 56px;}
@media (min-width:1024px){.hero{padding:40px 0 96px;}}
.hero-grid{display:grid;gap:32px;align-items:center;}
@media (min-width:1024px){.hero-grid{grid-template-columns:55% 45%;gap:48px;}}
.hero-badge{margin-bottom:16px;}
.hero-sub{font-size:17px;line-height:1.85;color:var(--ink-2);margin-top:18px;max-width:620px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.trust{display:flex;flex-wrap:wrap;gap:20px;margin-top:28px;padding-top:22px;border-top:1px solid var(--line);}
.trust-item{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-2);font-weight:600;}
.trust-ico{width:22px;height:22px;border-radius:7px;background:var(--brand-soft);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.hero-media{position:relative;}
.hero-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-card);}
@media (max-width:639px){.hero-media img{aspect-ratio:auto;height:220px;}}
.hero-float{
  position:absolute;right:14px;bottom:-18px;width:172px;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:14px;box-shadow:var(--sh-2);
}
.hero-float strong{display:block;font-size:24px;font-weight:800;color:var(--brand);line-height:1.1;}
.hero-float span{font-size:12.5px;color:var(--ink-3);}
@media (max-width:639px){.hero-float{position:static;width:100%;margin-top:14px;}}

/* ---------- 卡片 ---------- */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
  box-shadow:var(--sh-1);transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:#D6E2F4;}
.card h3{font-size:18px;}
.card p{font-size:14.5px;color:var(--ink-2);margin-top:10px;}
.grid-3{display:grid;gap:22px;grid-template-columns:1fr;}
@media (min-width:640px){.grid-3{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.grid-3{grid-template-columns:repeat(3,1fr);}}
.grid-split{display:grid;gap:22px;grid-template-columns:1fr;}
@media (min-width:1024px){.grid-split{grid-template-columns:1.42fr 1fr;}}
.stack-2{display:grid;gap:22px;}

/* 步骤卡 */
.step-card{position:relative;overflow:hidden;}
.step-num{
  position:absolute;right:14px;top:2px;font-size:64px;font-weight:800;line-height:1;
  color:var(--brand-soft);z-index:0;letter-spacing:-.04em;
}
.step-card > *{position:relative;z-index:1;}
.step-ico{width:44px;height:44px;border-radius:12px;background:var(--brand-soft);display:flex;align-items:center;justify-content:center;margin-bottom:16px;}
.step-card h3{margin-bottom:4px;}
.step-dot{display:flex;align-items:center;gap:10px;margin-top:18px;}
.step-dot i{width:8px;height:8px;border-radius:50%;background:var(--mint);display:block;}

/* 图文卡 */
.media-card{padding:0;overflow:hidden;display:flex;flex-direction:column;}
.media-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.media-card .body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.media-card .body p{font-size:14.5px;margin:0;}
.media-badge{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;
  background:var(--mint);color:#fff;font-size:11.5px;font-weight:700;align-self:flex-start;
}
.mini-card{display:flex;gap:16px;align-items:flex-start;}
.mini-ico{width:42px;height:42px;border-radius:12px;background:var(--brand-soft);display:flex;align-items:center;justify-content:center;flex-shrink:0;}

/* ---------- 数据带 ---------- */
.dark-band{
  background:var(--dark);color:#fff;border-radius:0;
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.055) 0 2px,transparent 2px 12px);
}
.dark-band .section-head h2{color:#fff;}
.dark-band .section-head p{color:rgba(255,255,255,.7);}
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
@media (min-width:1024px){.stat-grid{grid-template-columns:repeat(4,1fr);gap:28px;}}
.stat-num{font-size:clamp(28px,3.4vw,40px);font-weight:800;color:#fff;line-height:1.1;display:flex;align-items:baseline;gap:4px;}
.stat-num em{font-style:normal;font-size:15px;font-weight:700;color:var(--accent);}
.stat-label{font-size:13px;color:rgba(255,255,255,.68);margin-top:8px;}
.stat-item{padding-left:16px;border-left:2px solid rgba(255,255,255,.14);}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;gap:32px;}
@media (min-width:1024px){.faq-layout{grid-template-columns:1fr 2fr;gap:48px;align-items:start;}}
.faq-aside p{font-size:15px;color:var(--ink-2);margin-top:12px;max-width:320px;}
.faq-list{display:grid;gap:12px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color .18s ease-out,box-shadow .18s ease-out;}
.faq-item[open]{border-color:#D3E1F7;box-shadow:var(--sh-1);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 20px;font-size:16px;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item[open] summary{color:var(--brand);border-left:3px solid var(--mint);}
.faq-sign{width:22px;height:22px;border-radius:50%;background:var(--brand-soft);color:var(--brand);font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:transform .18s ease-out,background-color .18s ease-out;}
.faq-item[open] .faq-sign{background:var(--mint);color:#fff;}
.faq-answer{padding:0 20px 20px 20px;font-size:15px;line-height:1.8;color:var(--ink-2);}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--brand-soft);border-radius:20px;padding:32px 24px;
  background-image:repeating-linear-gradient(135deg,rgba(21,87,192,.045) 0 2px,transparent 2px 12px);
}
@media (min-width:1024px){.cta-band{padding:48px 48px;}}
.cta-inner{display:grid;gap:24px;align-items:center;}
@media (min-width:1024px){.cta-inner{grid-template-columns:1fr auto;}}
.cta-inner h2{font-size:clamp(22px,2.2vw,30px);}
.cta-inner p{font-size:15.5px;color:var(--ink-2);margin-top:10px;max-width:640px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);margin-top:56px;padding:56px 0 0;}
@media (min-width:1024px){.site-footer{margin-top:96px;padding-top:72px;}}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr;}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-logo-text{display:flex;flex-direction:column;line-height:1.1;}
.footer-logo-main{font-size:17px;font-weight:800;color:#fff;}
.footer-logo-sub{font-size:10.5px;font-weight:600;color:#8FB6EA;letter-spacing:.08em;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-list{display:grid;gap:10px;}
.footer-link{font-size:14px;color:rgba(255,255,255,.72);display:inline-block;transition:color .18s ease-out,transform .18s ease-out;}
.footer-link:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  margin-top:40px;border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;
}
.footer-bottom p{font-size:12.5px;color:rgba(255,255,255,.56);}

/* roulang page: category2 */
:root{
  --brand:#1557C0;
  --brand-deep:#0B3A86;
  --brand-soft:#E8F0FD;
  --accent:#FF6A2B;
  --accent-hover:#E2571B;
  --mint:#0FBFA0;
  --ink:#101B2E;
  --ink-2:#4A5A72;
  --ink-3:#8695AB;
  --line:#E2E9F2;
  --line-soft:#EFF3F8;
  --bg:#F6F9FD;
  --card:#FFFFFF;
  --dark:#0B1F3A;
  --danger:#D64545;
  --r-card:16px;
  --r-img:12px;
  --r-btn:11px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(16,27,46,.04), 0 8px 24px -12px rgba(21,87,192,.14);
  --sh-2:0 14px 32px -14px rgba(21,87,192,.26);
  --sh-3:0 20px 48px -18px rgba(11,31,58,.28);
  --t:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
body.site-body{
  margin:0;
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
body.site-body a{color:inherit;text-decoration:none;}
body.site-body img{display:block;max-width:100%;height:auto;}
body.site-body button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
body.site-body ul{list-style:none;margin:0;padding:0;}
body.site-body h1,body.site-body h2,body.site-body h3,body.site-body h4{margin:0;color:var(--ink);font-weight:700;}
body.site-body p{margin:0;}
body.site-body input,body.site-body textarea{font:inherit;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:640px){.container{padding:0 24px;}}
@media (min-width:1024px){.container{padding:0 32px;}}
@media (min-width:1440px){.container{max-width:1280px;}}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t);
}
.site-header.is-scrolled{box-shadow:0 8px 24px -16px rgba(11,31,58,.18);}
.nav-inner{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:70px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;padding:6px 0;min-height:44px;}
.logo-mark{
  width:38px;height:38px;border-radius:11px;
  background:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  flex:0 0 auto;
}
.logo-text{display:flex;flex-direction:column;line-height:1.1;}
.logo-main{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:-0.01em;}
.logo-sub{font-size:9.5px;font-weight:600;color:var(--brand);letter-spacing:.14em;}
.main-nav{flex:1 1 auto;display:none;}
.nav-list{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:44px;
  padding:0 12px;
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  border-radius:10px;
  transition:color var(--t),background var(--t);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;bottom:2px;
  width:0;height:3px;
  border-radius:2px;
  background:var(--accent);
  transform:translateX(-50%);
  transition:width var(--t);
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-link:hover::after{width:20px;}
.nav-link.active{color:var(--brand);font-weight:700;}
.nav-link.active::after{width:20px;}
.nav-link:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.mega-wrap{position:relative;display:none;}
.mega-trigger{
  display:inline-flex;align-items:center;gap:6px;
  height:44px;padding:0 14px;
  font-size:15px;font-weight:500;color:var(--ink-2);
  border-radius:10px;
  transition:background var(--t),color var(--t);
}
.mega-trigger:hover,.mega-trigger:focus-visible{background:var(--brand-soft);color:var(--brand);outline:none;}
.mega-trigger .chev{transition:transform var(--t);}
.mega-wrap:hover .mega-trigger .chev{transform:rotate(180deg);}
.mega-panel{
  position:absolute;
  right:0;top:calc(100% + 10px);
  width:660px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:var(--sh-3);
  padding:20px;
  display:grid;
  grid-template-columns:1.1fr .95fr 1fr;
  gap:18px;
  opacity:0;
  visibility:hidden;
  transform:translateY(6px);
  transition:opacity 150ms ease-out,transform 150ms ease-out,visibility 150ms;
}
.mega-wrap:hover .mega-panel,
.mega-wrap:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-title{font-size:12px;font-weight:600;color:var(--ink-3);letter-spacing:.08em;margin-bottom:10px;}
.mega-item{
  display:flex;gap:10px;align-items:flex-start;
  padding:9px 10px;border-radius:10px;
  transition:background var(--t);
}
.mega-item:hover{background:var(--brand-soft);}
.mega-ico{
  width:30px;height:30px;flex:0 0 auto;border-radius:9px;
  background:var(--brand-soft);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;
}
.mega-item b{display:block;font-size:14px;font-weight:700;color:var(--ink);}
.mega-item span.mega-desc{display:block;font-size:12.5px;color:var(--ink-3);line-height:1.55;}
.mega-news{
  display:block;padding:9px 10px;border-radius:10px;
  transition:background var(--t);
}
.mega-news:hover{background:var(--brand-soft);}
.mega-news b{display:block;font-size:14px;font-weight:600;color:var(--ink);line-height:1.5;}
.mega-news time{display:block;font-size:12px;color:var(--ink-3);margin-top:2px;}
.mega-card{
  background:var(--brand-soft);
  border-radius:14px;
  padding:16px;
  display:flex;flex-direction:column;gap:10px;
}
.mega-card b{font-size:15px;color:var(--ink);}
.mega-card p{font-size:13px;color:var(--ink-2);line-height:1.7;}
.hamburger{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;border-radius:10px;
  align-items:center;
  transition:background var(--t);
}
.hamburger:hover{background:var(--brand-soft);}
.hamburger span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:transform var(--t),opacity var(--t);}
.hamburger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger.is-open span:nth-child(2){opacity:0;}
.hamburger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.drawer{
  display:none;
  border-top:1px solid var(--line-soft);
  background:#fff;
  max-height:calc(100vh - 70px);
  overflow-y:auto;
}
.drawer.is-open{display:block;}
.drawer-inner{padding:16px 0 24px;}
.drawer-title{font-size:12px;font-weight:600;color:var(--ink-3);letter-spacing:.08em;margin:14px 0 8px;}
.drawer-list{display:grid;gap:2px;}
.drawer-link{
  display:flex;align-items:center;min-height:44px;
  padding:0 12px;border-radius:10px;
  font-size:15px;color:var(--ink-2);font-weight:500;
  transition:background var(--t),color var(--t);
}
.drawer-link:hover{background:var(--brand-soft);color:var(--brand);}
.drawer-link.active{color:var(--brand);font-weight:700;background:var(--brand-soft);}
.drawer-sub{display:grid;gap:2px;margin-bottom:6px;}
.drawer-sub a{
  display:flex;align-items:center;min-height:44px;
  padding:0 12px 0 14px;border-radius:10px;
  font-size:14px;color:var(--ink-2);
  transition:background var(--t);
}
.drawer-sub a:hover{background:var(--brand-soft);color:var(--brand);}
@media (min-width:1024px){
  .main-nav{display:flex;}
  .mega-wrap{display:block;}
  .hamburger{display:none;}
  .drawer{display:none !important;}
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;
  border-radius:var(--r-btn);
  font-size:16px;font-weight:600;
  border:1.5px solid transparent;
  transition:background var(--t),color var(--t),box-shadow var(--t),transform var(--t),border-color var(--t);
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-secondary{background:#fff;border-color:var(--brand);color:var(--brand);}
.btn-secondary:hover{background:var(--brand-soft);}
.btn-secondary:active{transform:translateY(1px);}
.btn-sm{height:42px;font-size:14px;padding:0 20px;}
.btn-block{width:100%;}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
  border-bottom:1.5px solid rgba(21,87,192,.28);
  padding-bottom:1px;
  transition:color var(--t),border-color var(--t);
}
.link-arrow:hover{color:var(--accent);border-color:var(--accent);}

/* ---------- Breadcrumb / Page hero ---------- */
.breadcrumb{
  padding:16px 0 0;
  font-size:13.5px;
  color:var(--ink-3);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb .sep{color:var(--line);}
.breadcrumb a{color:var(--ink-3);transition:color var(--t);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .current{color:var(--ink-2);}
.page-hero{
  background-color:var(--brand-soft);
  background-image:repeating-linear-gradient(135deg,rgba(21,87,192,.055) 0 2px,transparent 2px 11px);
  border-bottom:1px solid var(--line);
  padding:36px 0 52px;
  margin-top:16px;
}
.page-hero .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand);
  background:#fff;border-radius:999px;padding:6px 14px;
  box-shadow:var(--sh-1);
}
.page-title{
  font-size:clamp(30px,4.2vw,52px);
  font-weight:800;
  line-height:1.18;
  letter-spacing:-0.01em;
  margin:18px 0 0;
  max-width:880px;
}
.page-lead{
  margin-top:16px;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
  max-width:800px;
}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-point{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:8px 16px;
  font-size:13.5px;color:var(--ink-2);
}
.hero-point i{
  width:8px;height:8px;border-radius:999px;background:var(--mint);
  display:inline-block;flex:0 0 auto;
}

/* ---------- Sections ---------- */
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-alt{background:#fff;border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);}
.sec-head{max-width:820px;}
.sec-head h2{
  font-size:clamp(24px,2.4vw,34px);
  line-height:1.25;
  position:relative;
  padding-left:16px;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;
  background:var(--brand);border-radius:2px;
}
.sec-head p{margin-top:14px;font-size:15.5px;color:var(--ink-2);}

/* ---------- Z rows ---------- */
.zlist{display:grid;gap:44px;margin-top:44px;}
.zrow{
  display:grid;
  grid-template-columns:1fr;
  gap:22px;
  align-items:center;
}
@media (min-width:1024px){
  .zrow{grid-template-columns:1fr 1fr;gap:48px;}
  .zrow.rev .zmedia{order:2;}
}
.zmedia{
  border-radius:var(--r-card);
  overflow:hidden;
  background:#fff;
  box-shadow:var(--sh-1);
  border:1px solid var(--line);
}
.zmedia img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:0;}
.zbody .badge{
  display:inline-block;
  background:var(--mint);color:#fff;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  border-radius:999px;padding:4px 12px;
}
.zbody h3{font-size:22px;line-height:1.35;margin:14px 0 0;}
.zbody p{margin-top:14px;font-size:16px;line-height:1.85;max-width:760px;}
.zbody .z-actions{margin-top:18px;}

/* ---------- Stats strip ---------- */
.stats-strip{
  background-color:var(--dark);
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.05) 0 2px,transparent 2px 12px);
  border-radius:var(--r-card);
  padding:32px 24px;
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px 16px;
}
@media (min-width:1024px){.stats-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}}
.stat-num{
  font-size:clamp(30px,3.4vw,40px);
  font-weight:800;
  color:#fff;
  line-height:1.1;
}
.stat-num em{font-style:normal;font-size:.56em;font-weight:700;color:var(--accent);margin-left:4px;}
.stat-label{font-size:13px;color:rgba(255,255,255,.68);margin-top:6px;}

/* ---------- Tag wall ---------- */
.tagwall{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.tag{
  display:inline-flex;align-items:center;
  min-height:44px;
  padding:0 20px;
  border-radius:999px;
  background:#fff;
  border:1px solid var(--line);
  font-size:14.5px;
  color:var(--ink-2);
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t);
}
.tag:hover{background:var(--brand);color:#fff;border-color:var(--brand);transform:translateY(-2px);}
.tag:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

/* ---------- Next links ---------- */
.next-links{
  display:grid;
  grid-template-columns:1fr;
  gap:14px;
  margin-top:28px;
}
@media (min-width:768px){.next-links{grid-template-columns:1fr 1fr;}}
.next-link{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  min-height:64px;
  padding:12px 20px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.next-link:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:var(--brand-soft);}
.next-link b{display:block;font-size:15.5px;color:var(--ink);}
.next-link span{display:block;font-size:13px;color:var(--ink-3);}
.next-link .arrow{color:var(--brand);font-weight:700;transition:color var(--t);}
.next-link:hover .arrow{color:var(--accent);}

/* ---------- CTA band ---------- */
.cta-band{
  background-color:var(--brand-soft);
  background-image:repeating-linear-gradient(135deg,rgba(21,87,192,.05) 0 2px,transparent 2px 11px);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:38px 28px;
  display:grid;
  gap:22px;
  align-items:center;
}
@media (min-width:1024px){
  .cta-band{grid-template-columns:1.4fr 1fr;padding:46px 44px;gap:32px;}
}
.cta-band h2{font-size:clamp(22px,2.2vw,30px);line-height:1.3;}
.cta-band p{margin-top:12px;font-size:15.5px;color:var(--ink-2);max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--dark);
  color:rgba(255,255,255,.72);
  padding:56px 0 0;
  margin-top:56px;
}
@media (min-width:1024px){.site-footer{padding-top:72px;margin-top:96px;}}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:34px;
}
@media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}}
.footer-logo{display:inline-flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-logo .logo-mark{width:36px;height:36px;border-radius:10px;background:rgba(255,255,255,.1);}
.footer-logo-text{display:flex;flex-direction:column;line-height:1.1;}
.footer-logo-main{font-size:17px;font-weight:800;color:#fff;}
.footer-logo-sub{font-size:9.5px;font-weight:600;color:#8FB4EE;letter-spacing:.14em;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-list{display:grid;gap:2px;}
.footer-link{
  display:inline-flex;align-items:center;min-height:36px;
  font-size:14px;color:rgba(255,255,255,.72);
  transition:color var(--t),transform var(--t);
}
.footer-link:hover{color:#fff;transform:translateX(2px);}
.footer-link:focus-visible{outline:2px solid #8FB4EE;outline-offset:2px;border-radius:6px;}
.small{font-size:13px;line-height:1.7;}
.footer-bottom{
  margin-top:40px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
}
.footer-bottom p{font-size:12.5px;color:rgba(255,255,255,.55);line-height:1.7;}

/* roulang page: category3 */
:root{
  --brand:#1557C0; --brand-deep:#0B3A86; --brand-soft:#E8F0FD;
  --accent:#FF6A2B; --accent-hover:#E2571B; --mint:#0FBFA0; --danger:#D64545;
  --ink:#101B2E; --ink-2:#4A5A72; --ink-3:#8695AB;
  --line:#E2E9F2; --line-soft:#EFF3F8; --bg:#F6F9FD; --card:#FFFFFF; --dark:#0B1F3A;
  --r-card:15px; --r-img:12px; --r-btn:11px;
  --sh-1:0 1px 2px rgba(16,27,46,.04), 0 8px 24px -12px rgba(21,87,192,.14);
  --sh-2:0 14px 32px -14px rgba(21,87,192,.26);
  --sh-pop:0 20px 48px -18px rgba(11,31,58,.28);
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
html body{
  margin:0;background:var(--bg);color:var(--ink-2);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none;margin:0;padding:0}
button,input,textarea{font:inherit;color:inherit;background:none;border:none}
h1,h2,h3,h4{margin:0;color:var(--ink)}
p{margin:0}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.container{padding-left:24px;padding-right:24px}}
@media(min-width:1024px){.container{padding-left:32px;padding-right:32px}}
@media(min-width:1440px){.container{max-width:1280px}}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow var(--ease)}
.site-header.is-scrolled{box-shadow:0 8px 24px -16px rgba(11,31,58,.18)}
.header-inner{display:flex;align-items:center;gap:18px;height:70px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;height:44px}
.logo-mark{width:38px;height:38px;border-radius:11px;background:var(--brand);display:inline-flex;align-items:center;justify-content:center;flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-main{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:.01em}
.brand-sub{font-size:9.5px;font-weight:600;color:#5B8EDC;letter-spacing:.16em}
.main-nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-link{position:relative;display:inline-flex;align-items:center;height:44px;padding:0 12px;border-radius:9px;font-size:15px;color:var(--ink-2);transition:color var(--ease),background var(--ease)}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.active{color:var(--brand);font-weight:700}
.nav-link.active::after{content:"";position:absolute;left:50%;bottom:5px;transform:translateX(-50%);width:20px;height:3px;border-radius:2px;background:var(--accent)}
.header-actions{display:flex;align-items:center;gap:10px;flex:none}
.mega-wrap{position:relative}
.mega-trigger{display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 14px;border-radius:10px;font-size:14px;font-weight:600;color:var(--ink-2);cursor:pointer;transition:all var(--ease)}
.mega-trigger:hover{color:var(--brand);background:var(--brand-soft)}
.mega-trigger svg{transition:transform var(--ease)}
.mega-wrap.open .mega-trigger svg{transform:rotate(180deg)}
.mega-panel{position:absolute;right:0;top:calc(100% + 12px);width:660px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh-pop);padding:20px;display:grid;grid-template-columns:1.05fr 1.2fr 1fr;gap:18px;z-index:90}
@media(min-width:1024px){
  .mega-panel{opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity 150ms ease-out,transform 150ms ease-out,visibility 150ms}
  .mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel,.mega-wrap.open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
}
@media(max-width:1023px){
  .mega-panel{position:static;width:100%;grid-template-columns:1fr;display:none;box-shadow:none;margin-top:10px;padding:14px;border-radius:12px}
  .mega-wrap.open .mega-panel{display:grid}
}
.mega-col-title{font-size:12.5px;font-weight:700;color:var(--ink-3);letter-spacing:.08em;margin-bottom:10px}
.mega-item{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:10px;font-size:14px;color:var(--ink-2);transition:all var(--ease)}
.mega-item:hover{background:var(--brand-soft);color:var(--brand)}
.mega-icon{width:28px;height:28px;border-radius:8px;background:var(--brand-soft);display:inline-flex;align-items:center;justify-content:center;color:var(--brand);font-size:12px;font-weight:800;flex:none}
.mega-news{padding:9px 10px;border-radius:10px;transition:background var(--ease)}
.mega-news:hover{background:var(--brand-soft)}
.mega-news b{display:block;font-size:14px;font-weight:600;color:var(--ink);line-height:1.5;margin-bottom:2px}
.mega-news span{font-size:12px;color:var(--ink-3)}
.mega-card{background:var(--brand-soft);border-radius:12px;padding:14px}
.mega-card p{font-size:13.5px;line-height:1.7;color:var(--ink-2);margin-bottom:10px}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:all var(--ease)}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:1180px){.nav-link{padding:0 9px;font-size:14.5px}}
@media(max-width:1023px){
  .header-inner{height:64px}
  .main-nav{display:none;margin-left:0}
  .main-nav.open{display:block;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--sh-pop);padding:12px 20px 20px;max-height:calc(100vh - 64px);overflow:auto}
  .nav-list{flex-direction:column;align-items:stretch;gap:2px}
  .nav-link{height:48px;width:100%;border-radius:10px;padding:0 14px}
  .nav-toggle{display:inline-flex}
  .mega-trigger{width:100%;justify-content:space-between;height:48px}
  .brand-main{font-size:16px}
}
@media(max-width:639px){.header-cta{display:none}}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-btn);font-size:14px;font-weight:600;height:42px;padding:0 22px;border:1.5px solid transparent;cursor:pointer;white-space:nowrap;transition:all var(--ease)}
.btn-sm{height:38px;font-size:14px;padding:0 18px}
.btn-lg{height:48px;font-size:16px;padding:0 26px}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 10px 22px -10px rgba(226,87,27,.55)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:#fff;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft)}
.btn-ghost:active{transform:translateY(1px)}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.btn-text:hover{color:var(--accent);text-decoration-thickness:2px}

/* ---------- 页头 ---------- */
.page-head{position:relative;overflow:hidden;background:var(--brand-soft);padding:26px 0 42px}
.page-head::after{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(135deg,rgba(21,87,192,.05) 0 2px,transparent 2px 12px);pointer-events:none}
.page-head .container{position:relative;z-index:1}
.crumb{font-size:13.5px;color:var(--ink-3);display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.crumb a{color:var(--ink-3);transition:color var(--ease)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#B9C6D8}
.crumb .current{color:var(--ink-2)}
.page-title{font-size:clamp(28px,3.6vw,42px);font-weight:800;line-height:1.18;letter-spacing:-.01em;margin:14px 0 14px}
.page-lead{max-width:780px;font-size:16px;line-height:1.85;color:var(--ink-2)}
.page-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;font-size:13px;color:var(--ink-3)}
.page-meta .dot{width:4px;height:4px;border-radius:50%;background:#C3D0E2}

/* ---------- 板块通用 ---------- */
.section{padding:56px 0}
@media(min-width:1024px){.section{padding:96px 0}}
.sec-head{margin-bottom:28px;max-width:780px}
.section-title{position:relative;padding-left:16px;font-size:clamp(24px,2.4vw,32px);font-weight:700;line-height:1.25}
.section-title::before{content:"";position:absolute;left:0;top:.22em;width:4px;height:1em;border-radius:2px;background:var(--brand)}
.section-sub{margin-top:10px;font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ---------- 指南两栏 ---------- */
.guide-layout{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:1024px){.guide-layout{grid-template-columns:240px minmax(0,1fr);gap:48px}}
.toc{align-self:start;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;box-shadow:var(--sh-1)}
@media(min-width:1024px){.toc{position:sticky;top:96px}}
.toc-title{font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--ink-3);margin-bottom:10px}
.toc-list li+li{margin-top:2px}
.toc-list a{display:flex;align-items:center;gap:10px;min-height:44px;padding:6px 10px;border-radius:10px;border-left:3px solid transparent;font-size:14px;color:var(--ink-2);transition:all var(--ease)}
.toc-list a .idx{font-size:12px;font-weight:700;color:var(--ink-3)}
.toc-list a:hover{background:var(--brand-soft);color:var(--brand)}
.toc-list a.active{background:var(--brand-soft);border-left-color:var(--accent);color:var(--brand);font-weight:700}
.toc-list a.active .idx{color:var(--brand)}
.toc-cta{margin-top:14px;width:100%}
.guide-body{min-width:0}
.guide-sec{padding-bottom:38px;margin-bottom:38px;border-bottom:1px solid var(--line-soft)}
.guide-sec:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.sec-no{font-size:12.5px;font-weight:800;letter-spacing:.14em;color:var(--brand);margin-bottom:6px}
.sec-title{position:relative;padding-left:14px;font-size:clamp(21px,2vw,26px);font-weight:700;line-height:1.3;margin-bottom:14px}
.sec-title::before{content:"";position:absolute;left:0;top:.26em;width:4px;height:.95em;border-radius:2px;background:var(--brand)}
.guide-body p{max-width:800px;font-size:16px;line-height:1.9;color:var(--ink-2);margin-bottom:16px}
.guide-body p:last-child{margin-bottom:0}
.guide-body strong{color:var(--ink)}
.figure{margin:22px 0}
.figure img{width:100%;border-radius:var(--r-img);box-shadow:var(--sh-1)}
.figure figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--ink-3)}
.callout{display:flex;gap:12px;max-width:820px;margin:20px 0;padding:16px 20px;background:var(--brand-soft);border-radius:12px;font-size:15px;line-height:1.8;color:var(--ink-2)}
.callout svg{flex:none;margin-top:5px}
.step-row{display:grid;gap:16px;margin:22px 0 6px}
@media(min-width:768px){.step-row{grid-template-columns:repeat(3,1fr)}}
.step-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;box-shadow:var(--sh-1);transition:transform var(--ease),box-shadow var(--ease)}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;background:var(--brand-soft);color:var(--brand);font-size:13.5px;font-weight:800;margin-bottom:12px}
.step-card h3{font-size:17px;font-weight:700;line-height:1.4;margin-bottom:8px}
.step-card p{font-size:14.5px;line-height:1.75;color:var(--ink-2);margin:0;max-width:none}
.col-list{display:grid;gap:12px;margin:20px 0}
.col-item{background:#fff;border:1px solid var(--line);border-left:3px solid var(--brand);border-radius:12px;padding:14px 18px;box-shadow:var(--sh-1);transition:box-shadow var(--ease)}
.col-item:hover{box-shadow:var(--sh-2)}
.col-item b{display:block;font-size:15.5px;font-weight:700;color:var(--ink);margin-bottom:4px}
.col-item span{font-size:14.5px;line-height:1.75;color:var(--ink-2)}
.tick-list{display:grid;gap:10px;margin:18px 0 6px;max-width:820px}
.tick-list li{position:relative;padding-left:26px;font-size:15.2px;line-height:1.8;color:var(--ink-2)}
.tick-list li::before{content:"";position:absolute;left:6px;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--mint)}

/* ---------- 相关阅读 ---------- */
.rel-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media(min-width:640px){.rel-grid{grid-template-columns:repeat(2,1fr)}}
.rel-card{display:grid;grid-template-columns:1fr;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--sh-1);transition:transform var(--ease),box-shadow var(--ease)}
@media(min-width:520px){.rel-card{grid-template-columns:200px minmax(0,1fr)}}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.rel-card img{width:100%;height:100%;min-height:160px;object-fit:cover}
.rel-body{padding:18px 20px}
.rel-body h3{font-size:17.5px;font-weight:700;line-height:1.45;margin:10px 0 8px;transition:color var(--ease)}
.rel-card:hover h3{color:var(--brand)}
.rel-body p{font-size:14px;line-height:1.72;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:10px}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;color:#fff;background:var(--mint)}
.badge-blue{background:var(--brand)}
.back-row{margin-top:28px}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;gap:28px;grid-template-columns:1fr}
@media(min-width:1024px){.faq-layout{grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:48px}}
.faq-aside .btn{margin-top:18px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--sh-1);transition:box-shadow var(--ease)}
.faq-item+.faq-item{margin-top:12px}
.faq-item[open]{box-shadow:var(--sh-2)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:54px;padding:14px 20px;cursor:pointer;font-size:16px;font-weight:600;line-height:1.5;color:var(--ink);list-style:none}
.faq-q::-webkit-details-marker{display:none}
.faq-q::after{content:"+";flex:none;font-size:20px;font-weight:400;color:var(--ink-3);transition:color var(--ease)}
.faq-item[open] .faq-q{color:var(--brand);box-shadow:inset 3px 0 0 var(--mint)}
.faq-item[open] .faq-q::after{content:"–";color:var(--brand)}
.faq-a{padding:0 20px 18px;max-width:760px;font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ---------- 咨询 ---------- */
.consult-wrap{display:grid;gap:24px;grid-template-columns:1fr;background:var(--brand-soft);border-radius:16px;padding:26px}
@media(min-width:1024px){.consult-wrap{grid-template-columns:1.15fr .85fr;gap:40px;padding:40px}}
.consult-title{font-size:clamp(22px,2.2vw,28px);font-weight:700;line-height:1.3;margin-bottom:10px}
.consult-desc{font-size:15px;line-height:1.8;color:var(--ink-2);margin-bottom:20px;max-width:560px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:6px}
.field input,.field textarea{width:100%;background:#fff;border:1px solid var(--line);border-radius:10px;padding:11px 14px;font-size:15px;color:var(--ink);transition:border-color var(--ease),box-shadow var(--ease)}
.field textarea{min-height:104px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#A9B6C8}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(21,87,192,.18)}
.info-card{align-self:start;background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:var(--sh-1)}
.info-card h3{font-size:17px;font-weight:700;margin-bottom:12px}
.info-list li{display:flex;gap:10px;font-size:14.5px;line-height:1.75;color:var(--ink-2)}
.info-list li+li{margin-top:10px}
.info-list li b{flex:none;color:var(--ink);font-weight:600}
.info-card .btn{margin-top:18px;width:100%}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:0;background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 0}
.footer-grid{display:grid;gap:36px;grid-template-columns:1fr}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.45fr 1fr 1fr 1fr;gap:40px}}
.footer-logo{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-logo .logo-mark{width:36px;height:36px;border-radius:10px}
.footer-logo-text{display:flex;flex-direction:column;line-height:1.1}
.footer-logo-main{font-size:16px;font-weight:800;color:#fff}
.footer-logo-sub{font-size:9.5px;font-weight:600;color:rgba(255,255,255,.66);letter-spacing:.16em}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin:0 0 16px}
.footer-list li+li{margin-top:10px}
.footer-link{display:inline-block;font-size:14px;color:rgba(255,255,255,.72);transition:color var(--ease),transform var(--ease)}
.footer-link:hover{color:#fff;transform:translateX(2px)}
.small{font-size:14px;line-height:1.75}
.footer-bottom{margin-top:48px;border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;font-size:12.5px;color:rgba(255,255,255,.5)}

/* roulang page: category4 */
:root{
  --brand:#1557C0;
  --brand-deep:#0B3A86;
  --brand-soft:#E8F0FD;
  --accent:#FF6A2B;
  --accent-hover:#E2571B;
  --mint:#0FBFA0;
  --ink:#101B2E;
  --ink-2:#4A5A72;
  --ink-3:#8695AB;
  --line:#E2E9F2;
  --line-soft:#EFF3F8;
  --bg:#F6F9FD;
  --card:#FFFFFF;
  --dark:#0B1F3A;
  --danger:#D64545;
  --r-card:16px;
  --r-img:12px;
  --r-btn:11px;
  --sh-1:0 1px 2px rgba(16,27,46,.04),0 8px 24px -12px rgba(21,87,192,.14);
  --sh-2:0 14px 32px -14px rgba(21,87,192,.26);
  --sh-3:0 20px 48px -18px rgba(11,31,58,.28);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-2);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.num{font-variant-numeric:tabular-nums}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:640px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}
@media(min-width:1440px){.container{max-width:1280px}}

/* ---------- 通用文字 ---------- */
.h1{font-size:clamp(30px,4.2vw,46px);font-weight:800;line-height:1.18;letter-spacing:-.01em;color:var(--ink)}
.h2{position:relative;font-size:clamp(24px,2.4vw,34px);font-weight:700;line-height:1.25;color:var(--ink);padding-left:16px}
.h2::before{content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:4px;border-radius:2px;background:var(--brand)}
.h3{font-size:21px;font-weight:700;line-height:1.35;color:var(--ink)}
.lead{font-size:16px;line-height:1.85;color:var(--ink-2);max-width:820px}
.small{font-size:14px;line-height:1.7}
.tiny{font-size:12.5px;line-height:1.6;color:var(--ink-3)}

/* ---------- 页头导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .18s ease-out}
.site-header.is-scrolled{box-shadow:0 8px 24px -16px rgba(11,31,58,.18)}
.header-inner{display:flex;align-items:center;gap:20px;height:70px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;min-height:44px}
.logo-mark{width:36px;height:36px;border-radius:11px;background:var(--brand);display:inline-flex;align-items:center;justify-content:center;box-shadow:0 8px 18px -10px rgba(21,87,192,.75);flex:0 0 auto}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-main{font-size:18px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.logo-sub{font-size:10px;font-weight:600;color:var(--brand);letter-spacing:.16em}

.main-nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-link{position:relative;display:flex;align-items:center;height:44px;padding:0 12px;border-radius:10px;font-size:15px;font-weight:500;color:var(--ink-2);transition:color .18s,background .18s}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.active{color:var(--brand);font-weight:700}
.nav-link.active::after{content:"";position:absolute;left:50%;bottom:4px;transform:translateX(-50%);width:20px;height:3px;border-radius:2px;background:var(--accent)}

.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}

/* Mega 面板 */
.mega-wrap{position:relative}
.more-btn{display:inline-flex;align-items:center;gap:6px;height:44px;padding:0 14px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);font-size:14px;font-weight:600;transition:.18s}
.more-btn:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.more-btn svg{transition:transform .18s}
.mega-wrap:hover .more-btn svg,.mega-wrap.open .more-btn svg{transform:rotate(180deg)}
.mega-panel{position:absolute;top:calc(100% + 10px);right:0;width:660px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh-3);padding:20px;display:grid;grid-template-columns:1.05fr 1fr 1.15fr;gap:18px;opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity .15s ease-out,transform .15s ease-out,visibility .15s}
.mega-wrap:hover .mega-panel,.mega-wrap.open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-title{font-size:12.5px;font-weight:700;color:var(--ink-3);letter-spacing:.06em;margin-bottom:12px}
.mega-list{display:flex;flex-direction:column;gap:4px}
.mega-item{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;font-size:14px;color:var(--ink-2);transition:background .18s,color .18s;min-height:44px}
.mega-item:hover{background:var(--brand-soft);color:var(--brand)}
.mega-dot{width:26px;height:26px;border-radius:8px;background:var(--brand-soft);color:var(--brand);display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex:0 0 auto}
.mega-news{display:block;padding:10px;border-radius:10px;transition:background .18s}
.mega-news:hover{background:var(--brand-soft)}
.mega-news b{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:4px}
.mega-card{border:1px solid var(--line);border-radius:14px;padding:16px;background:var(--brand-soft)}
.mega-card p{font-size:13.5px;color:var(--ink-2);line-height:1.7;margin-bottom:12px}

/* 移动端抽屉 */
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:5px;transition:border-color .18s}
.menu-toggle:hover{border-color:var(--brand)}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s,opacity .2s}
.menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:14px 20px 24px}
.nav-drawer.open{display:block}
.drawer-group{margin-bottom:6px}
.drawer-head{font-size:12.5px;font-weight:700;color:var(--ink-3);letter-spacing:.06em;padding:10px 0 6px}
.drawer-list{display:flex;flex-direction:column;gap:2px}
.drawer-link{display:flex;align-items:center;justify-content:space-between;height:46px;padding:0 12px;border-radius:10px;font-size:15px;color:var(--ink-2);transition:background .18s,color .18s}
.drawer-link:hover{background:var(--brand-soft);color:var(--brand)}
.drawer-link.active{color:var(--brand);font-weight:700;background:var(--brand-soft)}

@media(max-width:1023px){
  .main-nav{display:none}
  .mega-wrap{display:none}
  .header-actions .hide-sm{display:none}
  .menu-toggle{display:inline-flex}
}
@media(min-width:1024px){
  .nav-drawer{display:none!important}
}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--r-btn);font-size:16px;font-weight:700;border:1.5px solid transparent;white-space:nowrap;transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 22px -12px rgba(255,106,43,.75)}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 14px 26px -12px rgba(255,106,43,.85)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px -10px rgba(255,106,43,.7)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft)}
.btn-ghost:active{background:#D9E6FA}
.btn-sm{height:42px;padding:0 20px;font-size:14.5px}
@media(max-width:520px){.btn{width:100%}}

/* ---------- 面包屑 ---------- */
.crumb-wrap{padding:18px 0 0}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13.5px;color:var(--ink-3)}
.breadcrumb a{transition:color .18s}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#B9C6D8}
.breadcrumb .current{color:var(--ink-2)}

/* ---------- 页头 ---------- */
.page-hero{background:linear-gradient(180deg,#FFFFFF 0%,var(--brand-soft) 100%);border-bottom:1px solid var(--line)}
.page-hero-inner{display:grid;grid-template-columns:1fr;gap:32px;align-items:center;padding:30px 0 44px}
@media(min-width:900px){.page-hero-inner{grid-template-columns:1.12fr .88fr;gap:44px;padding:36px 0 56px}}
.page-hero p.lead{margin-top:18px}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.hero-media{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);aspect-ratio:16/11;background:#D8E4F7}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-float{position:absolute;left:16px;bottom:16px;right:16px;background:#fff;border-radius:14px;padding:14px 16px;box-shadow:var(--sh-3);display:flex;align-items:center;gap:14px;max-width:280px}
.hero-float .n{font-size:26px;font-weight:800;color:var(--brand);line-height:1}
.hero-float .t{font-size:12.5px;color:var(--ink-3);line-height:1.5}

/* ---------- 筛选标签条 ---------- */
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;padding:20px 0;border-bottom:1px solid var(--line);background:#fff}
.chip{display:inline-flex;align-items:center;height:42px;padding:0 18px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:14px;font-weight:600;color:var(--ink-2);transition:background .18s,color .18s,border-color .18s,transform .18s}
.chip:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.chip.active{background:var(--brand);border-color:var(--brand);color:#fff}
.chip.active:hover{color:#fff;background:var(--brand-deep);border-color:var(--brand-deep)}

/* ---------- 区块 ---------- */
.section{padding:56px 0}
@media(min-width:1024px){.section{padding:96px 0}}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{margin-bottom:32px;max-width:840px}
.section-head .lead{margin-top:14px}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:32px}

/* ---------- 方案卡片 ---------- */
.card-grid-2{display:grid;grid-template-columns:1fr;gap:22px}
@media(min-width:768px){.card-grid-2{grid-template-columns:repeat(2,1fr)}}
.svc-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .18s ease-out,box-shadow .18s ease-out}
.svc-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.svc-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--brand-soft)}
.svc-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.svc-card:hover .svc-media img{transform:scale(1.04)}
.media-badge{position:absolute;top:12px;left:12px}
.svc-body{display:flex;flex-direction:column;gap:12px;padding:22px 22px 24px;flex:1}
.svc-body .h3{font-size:18px}
.svc-body p{font-size:14.5px;line-height:1.85;color:var(--ink-2)}
.svc-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:6px}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600}
.tag-mint{background:rgba(15,191,160,.12);color:#0A8E77}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;font-size:12px;font-weight:600;color:#fff;background:var(--mint)}
.badge-brand{background:var(--brand)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:700;color:var(--brand);transition:color .18s,gap .18s}
.link-arrow:hover{color:var(--accent);gap:10px}

/* ---------- 适合 / 不适合 对照 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media(min-width:768px){.compare-grid{grid-template-columns:1fr 1fr}}
.compare-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column}
.compare-top{height:5px}
.compare-top.mint{background:var(--mint)}
.compare-top.neutral{background:#C7D3E3}
.compare-body{padding:24px 24px 26px}
.compare-body .h3{margin-bottom:14px}
.compare-list{display:flex;flex-direction:column;gap:12px}
.compare-list li{display:flex;gap:10px;font-size:14.5px;line-height:1.8;color:var(--ink-2)}
.dot{width:8px;height:8px;border-radius:50%;margin-top:9px;flex:0 0 auto}
.dot-mint{background:var(--mint)}
.dot-neutral{background:#B9C6D8}

/* ---------- 流程步骤 ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:20px;counter-reset:step}
@media(min-width:640px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.steps{grid-template-columns:repeat(4,1fr)}}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:28px 22px 24px;overflow:hidden;box-shadow:var(--sh-1);transition:transform .18s ease-out,box-shadow .18s ease-out}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.step-num{position:absolute;right:14px;top:6px;font-size:56px;font-weight:800;line-height:1;color:var(--brand-soft);font-variant-numeric:tabular-nums;pointer-events:none}
.step-icon{width:40px;height:40px;border-radius:12px;background:var(--brand-soft);color:var(--brand);display:inline-flex;align-items:center;justify-content:center;margin-bottom:16px}
.step .h3{font-size:17px;margin-bottom:8px;position:relative}
.step p{font-size:14.5px;line-height:1.8;color:var(--ink-2);position:relative}

/* ---------- CTA 条 ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--brand-soft);border:1px solid #D6E4FA;border-radius:20px;padding:36px 28px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-band::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(135deg,rgba(21,87,192,.06) 0 1px,transparent 1px 9px);pointer-events:none}
.cta-band>*{position:relative;z-index:1}
.cta-band .h3{margin-bottom:8px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
@media(max-width:520px){.cta-actions{width:100%}}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;overflow:hidden;background:var(--dark);color:rgba(255,255,255,.72);margin-top:0}
.site-footer::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.045) 0 1px,transparent 1px 10px);pointer-events:none}
.site-footer .container{position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding:52px 0 36px}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-logo .logo-mark{background:rgba(255,255,255,.10);box-shadow:none}
.footer-logo-text{display:flex;flex-direction:column;line-height:1.1}
.footer-logo-main{font-size:17px;font-weight:800;color:#fff}
.footer-logo-sub{font-size:10px;font-weight:600;color:#8FB6F0;letter-spacing:.16em}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin:0 0 14px}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-link{display:inline-block;font-size:14px;color:rgba(255,255,255,.72);transition:color .18s,transform .18s}
.footer-link:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.12);padding:18px 0 26px;font-size:12.5px;color:rgba(255,255,255,.52)}

/* roulang page: category5 */
:root{
  --brand:#1557C0;
  --brand-deep:#0B3A86;
  --brand-soft:#E8F0FD;
  --accent:#FF6A2B;
  --accent-hover:#E2571B;
  --mint:#0FBFA0;
  --ink:#101B2E;
  --ink-2:#4A5A72;
  --ink-3:#8695AB;
  --line:#E2E9F2;
  --line-soft:#EFF3F8;
  --bg:#F6F9FD;
  --card:#FFFFFF;
  --dark:#0B1F3A;
  --danger:#D64545;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:12px;
  --shadow-sm:0 1px 2px rgba(16,27,46,.04),0 8px 24px -12px rgba(21,87,192,.14);
  --shadow-md:0 14px 32px -14px rgba(21,87,192,.26);
  --shadow-lg:0 20px 48px -18px rgba(11,31,58,.28);
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-2);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:var(--brand);text-decoration:none}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
button,input{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.container{padding-left:24px;padding-right:24px}}
@media(min-width:1024px){.container{padding-left:32px;padding-right:32px}}
@media(min-width:1440px){.container{max-width:1280px}}
.section{padding:56px 0}
@media(min-width:1024px){.section{padding:96px 0}}
.section-soft{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:800px;margin-bottom:34px}
.section-title{position:relative;padding-left:16px;font-size:clamp(24px,2.4vw,34px);font-weight:700;color:var(--ink);letter-spacing:-0.01em}
.section-title::before{content:"";position:absolute;left:0;top:.26em;width:4px;height:.86em;border-radius:2px;background:var(--brand)}
.section-sub{margin-top:12px;font-size:15px;line-height:1.8;color:var(--ink-2);max-width:760px}
.small{font-size:13px;line-height:1.75}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow var(--ease)}
.site-header.scrolled{box-shadow:0 8px 24px -16px rgba(11,31,58,.18)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none}
.logo-mark{width:38px;height:38px;border-radius:12px;background:var(--brand);display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-main{font-size:18px;font-weight:800;color:var(--ink);letter-spacing:-0.01em}
.logo-sub{font-size:10px;font-weight:600;color:var(--brand);letter-spacing:.16em}
.main-nav{flex:1 1 auto;display:none}
@media(min-width:1024px){.main-nav{display:block}}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-link{position:relative;display:inline-flex;align-items:center;height:44px;padding:0 12px;font-size:15px;font-weight:600;color:var(--ink-2);text-decoration:none;border-radius:10px;transition:color var(--ease),background var(--ease)}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{content:"";position:absolute;left:50%;bottom:6px;transform:translateX(-50%);width:20px;height:3px;border-radius:2px;background:var(--accent)}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.mega-wrap{position:relative;display:none}
@media(min-width:1024px){.mega-wrap{display:block}}
.mega-trigger{display:inline-flex;align-items:center;gap:6px;height:44px;padding:0 14px;border-radius:10px;border:1.5px solid var(--line);background:#fff;color:var(--ink);font-size:14px;font-weight:600;cursor:pointer;transition:border-color var(--ease),color var(--ease),background var(--ease)}
.mega-trigger:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.mega-panel{position:absolute;top:calc(100% + 10px);right:0;width:700px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-lg);padding:18px;display:grid;grid-template-columns:1fr 1fr 1.1fr;gap:16px;opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity .15s ease-out,transform .15s ease-out,visibility .15s ease-out}
.mega-wrap:hover .mega-panel,.mega-wrap.open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col-title{font-size:12px;font-weight:700;color:var(--ink-3);letter-spacing:.08em;margin:0 0 10px}
.mega-link{display:flex;align-items:center;gap:8px;padding:9px 10px;border-radius:10px;font-size:14px;font-weight:600;color:var(--ink-2);text-decoration:none;transition:background var(--ease),color var(--ease)}
.mega-link:hover{background:var(--brand-soft);color:var(--brand)}
.mega-link .dot{width:6px;height:6px;border-radius:999px;background:var(--mint);flex:0 0 auto}
.mega-news{display:block;padding:10px;border-radius:10px;text-decoration:none;transition:background var(--ease)}
.mega-news:hover{background:var(--brand-soft)}
.mega-news-title{font-size:14px;font-weight:700;color:var(--ink);margin:0 0 4px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical}
.mega-news-time{font-size:12px;color:var(--ink-3)}
.mega-card{background:var(--brand-soft);border-radius:12px;padding:16px}
.mega-card h4{font-size:15px;margin:0 0 8px}
.mega-card p{font-size:13px;line-height:1.7;color:var(--ink-2);margin:0 0 12px}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:10px;border:1.5px solid var(--line);background:#fff;cursor:pointer;transition:border-color var(--ease)}
.nav-toggle:hover{border-color:var(--brand)}
@media(min-width:1024px){.nav-toggle{display:none}}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);margin:2px 0;transition:transform var(--ease),opacity var(--ease)}
.nav-toggle.open span:nth-child(1){transform:translateY(4px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-4px) rotate(-45deg)}
.mobile-drawer{display:none;background:#fff;border-top:1px solid var(--line);box-shadow:0 16px 32px -20px rgba(11,31,58,.24)}
.mobile-drawer.open{display:block}
@media(min-width:1024px){.mobile-drawer{display:none!important}}
.drawer-inner{padding-top:16px;padding-bottom:22px}
.drawer-group-title{font-size:12px;font-weight:700;color:var(--ink-3);letter-spacing:.08em;margin:14px 0 8px}
.drawer-list{display:grid;gap:4px}
.drawer-list a{display:flex;align-items:center;min-height:46px;padding:0 12px;border-radius:10px;font-size:15px;font-weight:600;color:var(--ink-2);text-decoration:none;transition:background var(--ease),color var(--ease)}
.drawer-list a:hover,.drawer-list a.active{background:var(--brand-soft);color:var(--brand)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--radius-btn);border:1.5px solid transparent;font-size:16px;font-weight:700;text-decoration:none;cursor:pointer;transition:background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease)}
.btn-sm{height:42px;font-size:14px;padding:0 20px}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 22px -14px rgba(255,106,43,.75)}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 16px 30px -16px rgba(255,106,43,.8)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px -10px rgba(255,106,43,.7)}
.btn-secondary{background:#fff;border-color:var(--brand);color:var(--brand)}
.btn-secondary:hover{background:var(--brand-soft)}
.btn-secondary:active{transform:translateY(1px)}
.btn-block{width:100%}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1.5px}
.link-more:hover{color:var(--accent)}

/* ---------- 页头 ---------- */
.page-hero{background:var(--brand-soft);border-bottom:1px solid var(--line);padding:40px 0 44px}
@media(min-width:1024px){.page-hero{padding:64px 0 68px}}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:18px}
.breadcrumb a{color:var(--ink-3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .current{color:var(--ink-2)}
.breadcrumb .sep{color:var(--line)}
.page-title{font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.18;letter-spacing:-0.01em;color:var(--ink);max-width:880px}
.page-lead{margin-top:16px;font-size:16px;line-height:1.85;color:var(--ink-2);max-width:760px}
.search-box{display:flex;gap:10px;max-width:580px;margin:26px 0 6px}
.search-input{flex:1 1 auto;min-width:0;height:48px;border-radius:10px;border:1px solid var(--line);background:#fff;padding:0 16px;font-size:15px;color:var(--ink);transition:border-color var(--ease),box-shadow var(--ease)}
.search-input::placeholder{color:var(--ink-3)}
.search-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.search-note{font-size:12.5px;color:var(--ink-3);margin-bottom:22px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;font-size:13px;font-weight:600;background:#fff;border:1px solid var(--line);color:var(--ink-2);transition:background var(--ease),color var(--ease),border-color var(--ease)}
.tag:hover{background:var(--brand);border-color:var(--brand);color:#fff}

/* ---------- 问题分类速览 ---------- */
.quick-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:640px){.quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.quick-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}}
.qcard{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 22px;box-shadow:var(--shadow-sm);overflow:hidden;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease)}
.qcard:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#D2E0F7}
.qcard .watermark{position:absolute;top:-4px;right:14px;font-size:64px;font-weight:800;line-height:1;color:var(--brand-soft);pointer-events:none;user-select:none}
.qcard-icon{position:relative;width:40px;height:40px;border-radius:12px;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.qcard h3{position:relative;font-size:18px;margin-bottom:8px}
.qcard p{position:relative;font-size:14px;line-height:1.75;color:var(--ink-2)}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:640px){.faq-layout{grid-template-columns:repeat(2,minmax(0,1fr))}.contact-card{grid-column:1/-1}}
@media(min-width:1024px){.faq-layout{grid-template-columns:repeat(2,minmax(0,1fr)) 320px;gap:24px}.contact-card{grid-column:auto}}
.faq-col{display:grid;gap:16px;align-content:start}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:0 20px;box-shadow:var(--shadow-sm);transition:box-shadow var(--ease),border-color var(--ease)}
.faq-item[open]{border-color:#D5E3F8;box-shadow:inset 3px 0 0 var(--mint),var(--shadow-md)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:56px;padding:14px 0;list-style:none;cursor:pointer;font-size:16px;font-weight:700;line-height:1.55;color:var(--ink);transition:color var(--ease)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item[open] summary{color:var(--brand)}
.faq-item summary::after{content:"";flex:0 0 auto;width:22px;height:22px;border-radius:7px;background:#EFF3F8 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231557C0' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") center/13px no-repeat;transition:transform .2s ease-out,background-color var(--ease)}
.faq-item[open] summary::after{transform:rotate(180deg);background-color:var(--brand-soft)}
.faq-answer{padding:14px 0 20px;border-top:1px solid var(--line-soft);font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ---------- 联系卡 ---------- */
.contact-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 22px;box-shadow:var(--shadow-sm)}
@media(min-width:1024px){.contact-card{position:sticky;top:96px}}
.contact-card h3{font-size:19px;margin-bottom:10px}
.contact-card .tip{font-size:14px;line-height:1.75;color:var(--ink-2);margin-bottom:18px}
.contact-list{display:grid;gap:12px;margin-bottom:20px}
.contact-list li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:var(--ink-2)}
.contact-list .dot{width:8px;height:8px;margin-top:8px;border-radius:999px;background:var(--brand);flex:0 0 auto}
.contact-list strong{color:var(--ink);font-weight:700}
.contact-card .btn+.btn{margin-top:10px}

/* ---------- 步骤 ---------- */
.steps{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:640px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.steps{grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}}
.step{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 22px;box-shadow:var(--shadow-sm);transition:transform var(--ease),box-shadow var(--ease)}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.step-top{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.step-dot{width:10px;height:10px;border-radius:999px;background:var(--brand);box-shadow:0 0 0 4px var(--brand-soft);flex:0 0 auto}
.step-num{font-size:13px;font-weight:800;color:var(--accent);letter-spacing:.06em}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14px;line-height:1.75;color:var(--ink-2)}

/* ---------- 快捷入口卡 ---------- */
.entry-grid{display:grid;gap:22px;grid-template-columns:1fr}
@media(min-width:640px){.entry-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.entry-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.entry-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform var(--ease),box-shadow var(--ease)}
.entry-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.entry-card:hover h3{color:var(--brand)}
.entry-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--brand-soft)}
.entry-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s ease-out}
.entry-card:hover .entry-thumb img{transform:scale(1.03)}
.entry-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.entry-body h3{font-size:18px;transition:color var(--ease)}
.entry-body p{font-size:14px;line-height:1.75;color:var(--ink-2)}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:700;color:#fff;background:var(--brand)}
.badge-mint{background:var(--mint)}

/* ---------- CTA 条 ---------- */
.cta-band{position:relative;background:var(--brand-soft);border-radius:20px;padding:38px 28px;overflow:hidden;display:grid;gap:24px;grid-template-columns:1fr}
@media(min-width:1024px){.cta-band{padding:48px 44px;grid-template-columns:1.5fr 1fr;align-items:center}}
.cta-band::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(135deg,rgba(21,87,192,.05) 0 8px,transparent 8px 18px);pointer-events:none}
.cta-band>*{position:relative}
.cta-band h2{font-size:clamp(22px,2.2vw,30px);margin-bottom:12px}
.cta-band p{font-size:15px;line-height:1.8;color:var(--ink-2);max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media(max-width:639px){.cta-actions .btn{width:100%}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-logo .logo-mark{width:36px;height:36px;border-radius:11px;background:var(--brand);display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.footer-logo-text{display:flex;flex-direction:column;line-height:1.12}
.footer-logo-main{font-size:17px;font-weight:800;color:#fff}
.footer-logo-sub{font-size:9.5px;font-weight:600;color:#8FB4EC;letter-spacing:.16em}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin:0 0 14px}
.footer-list{display:grid;gap:10px}
.footer-link{display:inline-block;font-size:14px;color:rgba(255,255,255,.72);transition:color var(--ease),transform var(--ease)}
.footer-link:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:44px;padding:20px 0;display:flex;flex-wrap:wrap;gap:8px 24px;font-size:12.5px;color:rgba(255,255,255,.56)}
.footer-bottom p{font-size:12.5px}