/* roulang page: index */
:root{
  --brand-600:#1B5AAE;
  --brand-700:#14498F;
  --brand-100:#E8F0FB;
  --brand-200:#C9DDF5;
  --accent-500:#F27A2B;
  --accent-100:#FEEDE1;
  --teal-500:#2E9E8F;
  --ink-900:#0E2136;
  --ink-700:#2A3B4D;
  --ink-500:#5C6E80;
  --line:#E3EAF2;
  --bg:#F7F9FC;
  --white:#FFFFFF;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-chip:999px;
  --r-input:10px;
  --sh-1:0 2px 8px rgba(21,58,102,.05);
  --sh-2:0 6px 24px rgba(21,58,102,.07);
  --sh-3:0 14px 40px rgba(21,58,102,.12);
  --ease:.25s ease;
  --wrap:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease);}
a:hover{color:var(--accent-500);text-decoration:underline;text-underline-offset:3px;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(27,90,174,.35);outline-offset:2px;border-radius:6px;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-0.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
::selection{background:var(--brand-200);color:var(--ink-900);}

.container-x{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section-alt{background:var(--bg);}
.section-white{background:var(--white);}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--brand-600);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--accent-500);}
.section-title{font-size:clamp(24px,3vw,34px);line-height:1.28;font-weight:700;}
.section-sub{color:var(--ink-500);font-size:16px;max-width:660px;margin-top:14px;}
.section-head{margin-bottom:44px;}
.section-head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--bg);border-bottom:1px solid var(--line);font-size:13px;color:var(--ink-500);}
.topbar-inner{display:flex;justify-content:flex-end;align-items:center;gap:22px;height:34px;}
.topbar a{color:var(--ink-500);}
.topbar a:hover{color:var(--brand-600);}
.topbar i{color:var(--brand-600);margin-right:6px;}

/* ---------- 导航 ---------- */
.nav-shell{
  position:sticky;top:0;z-index:1030;background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.nav-shell.is-scrolled{box-shadow:var(--sh-1);}
.nav-main{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:800;color:var(--ink-900);letter-spacing:-0.01em;}
.brand:hover{color:var(--ink-900);text-decoration:none;}
.brand-mark{
  width:34px;height:34px;border-radius:11px;flex:0 0 34px;
  background:linear-gradient(140deg,var(--brand-600),#2C74C7);
  position:relative;display:inline-flex;align-items:center;justify-content:center;
}
.brand-mark::before{content:"";position:absolute;width:22px;height:22px;border:1.5px solid rgba(255,255,255,.75);border-radius:50%;}
.brand-mark::after{content:"";position:absolute;width:5px;height:5px;border-radius:50%;background:var(--accent-500);top:7px;right:8px;}
.brand small{display:block;font-size:11px;font-weight:500;color:var(--ink-500);letter-spacing:.16em;line-height:1;margin-top:2px;}

.nav-links{display:flex;align-items:center;gap:30px;}
.nav-links a{font-size:15px;font-weight:500;color:var(--ink-700);position:relative;padding:6px 0;}
.nav-links a:hover{color:var(--brand-600);text-decoration:none;}
.nav-links a.active{color:var(--brand-600);font-weight:600;}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--accent-500);}

.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--white);color:var(--ink-900);
  align-items:center;justify-content:center;font-size:17px;
}
.nav-toggle:hover{border-color:var(--brand-200);background:var(--brand-100);color:var(--brand-700);}

/* chip 分段导航 */
.chipbar{border-top:1px solid var(--line);background:var(--white);}
.chipbar-inner{display:flex;align-items:center;gap:10px;height:52px;overflow-x:auto;scrollbar-width:none;}
.chipbar-inner::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:7px;
  padding:7px 16px;border-radius:var(--r-chip);
  border:1px solid var(--line);background:var(--white);
  font-size:14px;font-weight:500;color:var(--ink-700);white-space:nowrap;
}
.chip i{font-size:12px;color:var(--ink-500);}
.chip:hover{background:var(--brand-100);color:var(--brand-700);border-color:var(--brand-200);text-decoration:none;}
.chip:hover i{color:var(--brand-600);}
.chip.active{background:var(--brand-600);border-color:var(--brand-600);color:var(--white);box-shadow:var(--sh-1);}
.chip.active i{color:var(--white);}

/* ---------- 按钮 ---------- */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease);
}
.btn-x:hover{text-decoration:none;transform:translateY(-1px);}
.btn-brand{background:var(--brand-600);color:#fff;box-shadow:var(--sh-1);}
.btn-brand:hover{background:var(--brand-700);color:#fff;box-shadow:var(--sh-2);}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:var(--sh-1);}
.btn-accent:hover{background:#DD6A1E;color:#fff;box-shadow:var(--sh-2);}
.btn-ghost{background:transparent;border-color:var(--brand-200);color:var(--brand-600);}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-700);border-color:var(--brand-200);}
.btn-sm-x{padding:9px 18px;font-size:14px;}
.btn-block-x{width:100%;}

.link-arrow{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--brand-600);}
.link-arrow i{font-size:12px;transition:transform var(--ease);}
.link-arrow:hover{color:var(--accent-500);text-decoration:none;}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(100deg,rgba(255,255,255,.95) 0%,rgba(255,255,255,.88) 44%,rgba(232,240,251,.70) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;right:-160px;top:-180px;width:620px;height:620px;
  border:1px solid var(--brand-200);border-radius:50%;opacity:.75;pointer-events:none;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding:76px 0 66px;}
.hero h1{font-size:clamp(30px,4.2vw,48px);line-height:1.2;font-weight:800;letter-spacing:-0.02em;}
.hero h1 span{color:var(--brand-600);}
.hero-lead{margin-top:20px;font-size:17px;line-height:1.85;color:var(--ink-700);max-width:560px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-points{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px;}
.point-chip{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--r-chip);
  background:rgba(255,255,255,.86);border:1px solid var(--brand-200);
  font-size:13px;font-weight:500;color:var(--brand-700);
}
.point-chip i{font-size:11px;color:var(--teal-500);}
.hero-figure{position:relative;}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--sh-3);}
.hero-figure .fig-note{
  position:absolute;left:18px;bottom:18px;background:rgba(255,255,255,.94);
  border-radius:var(--r-btn);padding:12px 16px;box-shadow:var(--sh-2);
  display:flex;align-items:center;gap:12px;
}
.fig-note strong{display:block;font-size:20px;color:var(--brand-600);line-height:1.1;}
.fig-note span{font-size:12px;color:var(--ink-500);}

/* 信任条 */
.trust{background:var(--white);border-bottom:1px solid var(--line);}
.trust-list{display:grid;grid-template-columns:repeat(4,1fr);}
.trust-item{padding:26px 20px;text-align:center;border-left:1px solid var(--line);}
.trust-item:first-child{border-left:none;}
.trust-item strong{display:block;font-size:26px;font-weight:800;color:var(--brand-600);letter-spacing:-0.02em;}
.trust-item span{display:block;font-size:13px;color:var(--ink-500);margin-top:4px;}

/* ---------- 卡片 ---------- */
.card-x{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-2);height:100%;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card-x:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:var(--brand-200);}
.card-icon{
  width:46px;height:46px;border-radius:13px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-100);color:var(--brand-600);font-size:18px;margin-bottom:16px;
}
.card-x h3{font-size:17px;font-weight:600;line-height:1.45;}
.card-x p{font-size:15px;color:var(--ink-500);margin-top:10px;}
.card-x .link-arrow{margin-top:16px;}

.feature-lg{display:flex;flex-direction:column;padding:0;overflow:hidden;}
.feature-lg img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--brand-100);}
.feature-lg .feature-body{padding:26px;}

/* ---------- 场景 ---------- */
.scene-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:36px 0;}
.scene-row + .scene-row{border-top:1px solid var(--line);}
.scene-row.reverse .scene-media{order:2;}
.scene-num{font-size:40px;font-weight:800;color:var(--brand-200);line-height:1;margin-bottom:10px;}
.scene-row h3{font-size:22px;line-height:1.4;}
.scene-row p{color:var(--ink-500);margin-top:12px;}
.scene-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--sh-2);background:var(--brand-100);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.tag{
  display:inline-flex;align-items:center;padding:4px 10px;border-radius:6px;
  background:var(--brand-100);color:var(--brand-600);font-size:12px;font-weight:600;
}

/* ---------- 案例 ---------- */
.case-main{display:grid;grid-template-columns:1fr 1fr;gap:0;background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-2);}
.case-main img{width:100%;height:100%;min-height:300px;object-fit:cover;background:var(--brand-100);}
.case-body{padding:32px;}
.case-body h3{font-size:22px;}
.case-body p{color:var(--ink-500);margin-top:12px;}
.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:24px;padding-top:22px;border-top:1px solid var(--line);}
.metric strong{display:block;font-size:26px;font-weight:800;color:var(--brand-600);letter-spacing:-0.02em;}
.metric span{font-size:12px;color:var(--ink-500);}
.case-side{display:grid;gap:20px;align-content:start;}

/* ---------- 价格 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.price-card{
  position:relative;background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px 26px;box-shadow:var(--sh-2);transition:transform var(--ease),box-shadow var(--ease);
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);}
.price-card.featured{border-color:var(--brand-600);border-width:2px;padding-top:40px;}
.price-card.featured:hover{transform:translateY(-6px);}
.price-flag{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  background:var(--accent-500);color:#fff;font-size:12px;font-weight:600;
  padding:4px 14px;border-radius:var(--r-chip);box-shadow:var(--sh-1);
}
.price-name{font-size:15px;font-weight:600;color:var(--ink-900);}
.price-value{display:flex;align-items:baseline;gap:6px;margin:14px 0 6px;}
.price-value strong{font-size:34px;font-weight:800;color:var(--brand-600);letter-spacing:-0.02em;}
.price-value span{font-size:13px;color:var(--ink-500);}
.price-desc{font-size:14px;color:var(--ink-500);margin-bottom:20px;}
.price-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-700);padding:7px 0;}
.price-list i{color:var(--teal-500);font-size:13px;margin-top:5px;}
.price-card .btn-x{margin-top:22px;}
.price-note{margin-top:26px;display:flex;flex-wrap:wrap;align-items:center;gap:14px;justify-content:center;font-size:14px;color:var(--ink-500);}

/* ---------- 内容列表 CMS ---------- */
.news-main{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-2);height:100%;display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.news-main:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:var(--brand-200);}
.news-main .thumb{aspect-ratio:16/10;border-radius:0;}
.news-main .news-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-body h3{font-size:19px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body p{font-size:14.5px;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-item{
  display:grid;grid-template-columns:132px 1fr;gap:16px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  padding:14px;box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease),background-color var(--ease);
}
.news-item:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:var(--brand-200);background:#FCFDFF;}
.news-item .thumb{aspect-ratio:16/10;}
.news-item h3{font-size:15.5px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-item p{font-size:13.5px;color:var(--ink-500);margin-top:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.thumb{display:block;border-radius:var(--r-img);overflow:hidden;background:var(--brand-100);}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.news-item:hover .thumb img,.news-main:hover .thumb img{transform:scale(1.04);}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-500);}
.badge-cat{background:var(--brand-100);color:var(--brand-600);font-size:12px;font-weight:600;padding:4px 10px;border-radius:6px;}
.badge-state{background:var(--accent-100);color:#B9520F;font-size:12px;font-weight:600;padding:4px 10px;border-radius:6px;}
.news-empty{
  background:var(--brand-100);border:1px dashed var(--brand-200);border-radius:var(--r-card);
  min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  color:var(--ink-500);font-size:15px;padding:28px;text-align:center;
}
.news-empty i{font-size:26px;color:var(--brand-600);}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:none;border:none;text-align:left;
  display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:20px 0;font-size:16px;font-weight:600;color:var(--ink-900);cursor:pointer;
}
.faq-q:hover{color:var(--brand-600);}
.faq-q .mark{flex:0 0 auto;width:22px;height:22px;border-radius:50%;border:1px solid var(--brand-200);color:var(--brand-600);display:inline-flex;align-items:center;justify-content:center;font-size:13px;transition:transform var(--ease),background-color var(--ease);}
.faq-item.open .faq-q .mark{background:var(--brand-600);border-color:var(--brand-600);color:#fff;transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{font-size:15px;color:var(--ink-500);padding:0 0 20px;max-width:96%;}
.faq-item.open .faq-a{max-height:340px;}

.side-cta{
  background:var(--ink-900);color:rgba(255,255,255,.86);border-radius:var(--r-card);
  padding:32px;position:relative;overflow:hidden;box-shadow:var(--sh-2);
}
.side-cta::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:26px 26px;opacity:.5;pointer-events:none;
}
.side-cta > *{position:relative;z-index:2;}
.side-cta h3{color:#fff;font-size:20px;}
.side-cta p{font-size:14px;margin-top:10px;color:rgba(255,255,255,.72);}
.side-cta .divider{height:1px;background:rgba(255,255,255,.14);margin:22px 0;}
.contact-line{display:flex;align-items:center;gap:12px;font-size:14px;padding:7px 0;color:rgba(255,255,255,.86);}
.contact-line i{width:30px;height:30px;border-radius:9px;background:rgba(255,255,255,.1);display:inline-flex;align-items:center;justify-content:center;color:var(--accent-500);font-size:13px;}
.side-cta a{color:#fff;}
.side-cta a:hover{color:var(--accent-500);}

.form-label-x{display:block;font-size:13px;font-weight:500;color:var(--ink-700);margin-bottom:6px;}
.form-control-x{
  width:100%;height:48px;border:1px solid var(--line);border-radius:var(--r-input);
  padding:0 14px;font-size:15px;color:var(--ink-900);background:var(--white);
  transition:border-color var(--ease),box-shadow var(--ease);
}
textarea.form-control-x{height:auto;padding:12px 14px;resize:vertical;line-height:1.7;}
.form-control-x:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(27,90,174,.18);}
.form-control-x::placeholder{color:#9AAAB9;}
.form-row{margin-bottom:14px;}
.side-cta .form-control-x{background:rgba(255,255,255,.96);border-color:transparent;}
.side-cta .form-label-x{color:rgba(255,255,255,.8);}

/* ---------- 结尾 CTA ---------- */
.cta-band{background:var(--brand-100);border-top:1px solid var(--brand-200);border-bottom:1px solid var(--brand-200);}
.cta-band-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:52px 0;}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);line-height:1.35;}
.cta-band p{color:var(--ink-500);margin-top:10px;max-width:620px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);position:relative;overflow:hidden;}
.site-footer::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.13) 1px,transparent 1px);
  background-size:30px 30px;opacity:.55;pointer-events:none;
}
.site-footer::after{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:linear-gradient(90deg,var(--accent-500),rgba(242,122,43,0) 62%);}
.footer-inner{position:relative;z-index:2;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:800;}
.footer-brand:hover{color:#fff;text-decoration:none;}
.footer-brand .brand-mark{background:linear-gradient(140deg,#2C74C7,#1B5AAE);}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);margin-top:16px;max-width:320px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:rgba(255,255,255,.7);font-size:14px;}
.footer-col a:hover{color:var(--accent-500);}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.7);margin-bottom:12px;}
.footer-contact i{color:var(--accent-500);margin-top:4px;}
.footer-bottom{
  position:relative;z-index:2;margin-top:48px;border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- Offcanvas 移动菜单 ---------- */
.offcanvas-x{background:var(--white);}
.offcanvas-x .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.offcanvas-x .offcanvas-body{padding:18px 20px 28px;}
.m-nav a{display:flex;align-items:center;justify-content:space-between;padding:14px 0;font-size:16px;font-weight:500;color:var(--ink-700);border-bottom:1px solid var(--line);}
.m-nav a.active{color:var(--brand-600);font-weight:600;}
.m-nav a i{font-size:12px;color:var(--ink-500);}
.m-contact{margin-top:22px;font-size:14px;color:var(--ink-500);line-height:2;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .container-x{max-width:1000px;}
  .hero-inner{gap:40px;}
  .scene-row{gap:36px;}
}
@media (max-width:991.98px){
  .section{padding:64px 0;}
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-actions .btn-x{display:none;}
  .hero-inner{grid-template-columns:1fr;padding:56px 0 48px;}
  .hero::after{display:none;}
  .hero-lead{max-width:100%;}
  .trust-list{grid-template-columns:repeat(2,1fr);}
  .trust-item{border-left:none;border-top:1px solid var(--line);}
  .trust-item:nth-child(1),.trust-item:nth-child(2){border-top:none;}
  .trust-item:nth-child(even){border-left:1px solid var(--line);}
  .scene-row{grid-template-columns:1fr;gap:24px;padding:30px 0;}
  .scene-row.reverse .scene-media{order:0;}
  .case-main{grid-template-columns:1fr;}
  .case-main img{min-height:240px;}
  .price-grid{grid-template-columns:1fr;gap:26px;}
  .price-card.featured{padding-top:34px;}
  .faq-layout{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band-inner{flex-direction:column;align-items:flex-start;gap:22px;padding:44px 0;}
}
@media (max-width:767.98px){
  body{font-size:15.5px;}
  .container-x{padding:0 20px;}
  .topbar{display:none;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:32px;}
  .nav-main{height:64px;}
  .brand{font-size:17px;}
  .metrics{grid-template-columns:1fr 1fr;}
  .news-item{grid-template-columns:104px 1fr;gap:12px;padding:12px;}
  .metrics{gap:12px;}
}
@media (max-width:575.98px){
  .container-x{padding:0 16px;}
  .hero-inner{padding:44px 0 40px;}
  .hero-cta .btn-x{width:100%;}
  .trust-list{grid-template-columns:1fr;}
  .trust-item{border-left:none !important;border-top:1px solid var(--line);}
  .trust-item:first-child{border-top:none;}
  .footer-grid{grid-template-columns:1fr;}
  .metrics{grid-template-columns:1fr;}
  .news-item{grid-template-columns:1fr;}
  .news-item .thumb{aspect-ratio:16/9;}
  .price-value strong{font-size:30px;}
  .side-cta{padding:26px 20px;}
}

/* roulang page: article */
:root{
  --brand-600:#1B5AAE;
  --brand-700:#14498F;
  --brand-100:#E8F0FB;
  --brand-200:#C9DDF5;
  --accent-500:#F27A2B;
  --accent-100:#FEEDE1;
  --teal-500:#2E9E8F;
  --ink-900:#0E2136;
  --ink-700:#2A3B4D;
  --ink-500:#5C6E80;
  --line:#E3EAF2;
  --bg:#F7F9FC;
  --white:#FFFFFF;
  --r-card:14px;
  --r-btn:10px;
  --r-chip:999px;
  --r-img:12px;
  --sh-1:0 2px 8px rgba(21,58,102,.05);
  --sh-2:0 6px 24px rgba(21,58,102,.07);
  --sh-3:0 14px 40px rgba(21,58,102,.12);
  --maxw:1200px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--accent-500);}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(27,90,174,.35);outline-offset:2px;border-radius:6px;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.container-x{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
@media (min-width:1400px){.container-x{max-width:1240px;}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:var(--white);border-bottom:1px solid var(--line);transition:box-shadow .25s ease;}
.site-header.scrolled{box-shadow:var(--sh-1);}
.topbar{background:var(--bg);border-bottom:1px solid var(--line);font-size:13px;color:var(--ink-500);}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:34px;gap:16px;}
.topbar-note{color:var(--ink-500);}
.topbar-links{display:flex;align-items:center;gap:18px;}
.topbar-links a{color:var(--ink-500);display:inline-flex;align-items:center;gap:7px;}
.topbar-links a:hover{color:var(--brand-600);}
.topbar-links i{color:var(--teal-500);}
.mainbar-inner{display:flex;align-items:center;gap:26px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{position:relative;width:26px;height:26px;border-radius:50%;border:2px solid var(--brand-600);flex:0 0 auto;}
.brand-mark::before{content:"";position:absolute;inset:5px;border-radius:50%;border:1px dashed rgba(27,90,174,.45);}
.brand-mark::after{content:"";position:absolute;top:-3px;right:-3px;width:8px;height:8px;border-radius:50%;background:var(--accent-500);}
.brand-text{font-size:19px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em;line-height:1;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-links a{padding:9px 14px;border-radius:10px;font-size:15px;font-weight:500;color:var(--ink-700);white-space:nowrap;}
.nav-links a:hover{background:var(--brand-100);color:var(--brand-600);}
.nav-links a.active{background:var(--brand-100);color:var(--brand-600);font-weight:600;}
.mainbar-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-toggle{display:none;align-items:center;justify-content:center;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:var(--white);color:var(--ink-700);font-size:17px;cursor:pointer;transition:.2s ease;}
.nav-toggle:hover{background:var(--brand-100);color:var(--brand-600);border-color:var(--brand-200);}
.chipbar{border-top:1px solid var(--line);background:var(--white);}
.chipbar-inner{display:flex;align-items:center;gap:10px;padding:9px 24px;overflow-x:auto;scrollbar-width:none;}
.chipbar-inner::-webkit-scrollbar{display:none;}
.chip{flex:0 0 auto;display:inline-flex;align-items:center;gap:7px;padding:6px 16px;border-radius:var(--r-chip);border:1px solid var(--line);background:var(--white);color:var(--ink-700);font-size:14px;font-weight:500;white-space:nowrap;transition:.2s ease;}
.chip:hover{background:var(--brand-100);color:var(--brand-600);border-color:var(--brand-200);}
.chip.active{background:var(--brand-600);color:#fff;border-color:var(--brand-600);box-shadow:var(--sh-1);}
.chip.active:hover{background:var(--brand-700);color:#fff;}

/* ---------- buttons ---------- */
.btn-main,.btn-accent,.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1.2;border:1px solid transparent;cursor:pointer;transition:transform .25s ease,background-color .25s ease,box-shadow .25s ease,border-color .25s ease,color .25s ease;}
.btn-main{background:var(--brand-600);color:#fff;}
.btn-main:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent{background:var(--accent-500);color:#fff;}
.btn-accent:hover{background:#DD6A1E;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ghost{background:transparent;border-color:var(--brand-200);color:var(--brand-600);}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-700);border-color:var(--brand-200);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand-600);font-weight:600;font-size:15px;}
.btn-text i{transition:transform .25s ease;}
.btn-text:hover{color:var(--accent-500);}
.btn-text:hover i{transform:translateX(3px);}

/* ---------- article head ---------- */
.article-head{background:var(--white);border-bottom:1px solid var(--line);padding:26px 0 38px;position:relative;overflow:hidden;}
.article-head::after{content:"";position:absolute;right:-140px;top:-160px;width:420px;height:420px;border-radius:50%;border:1px solid var(--brand-200);opacity:.55;pointer-events:none;}
.article-head .container-x{position:relative;z-index:1;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-500);}
.crumb a{color:var(--ink-500);}
.crumb a:hover{color:var(--brand-600);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;}
.crumb .sep{color:#C7D3E0;}
.crumb .current{color:var(--ink-900);font-weight:500;}
.article-head h1{font-size:clamp(28px,3.8vw,42px);line-height:1.24;letter-spacing:-.02em;margin:18px 0 18px;max-width:940px;}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px;font-size:14px;color:var(--ink-500);}
.meta-item{display:inline-flex;align-items:center;gap:7px;}
.meta-item i{color:var(--teal-500);}
.badge-cat{display:inline-flex;align-items:center;padding:4px 10px;border-radius:6px;background:var(--brand-100);color:var(--brand-600);font-size:12px;font-weight:600;}
.badge-state{display:inline-flex;align-items:center;padding:4px 10px;border-radius:6px;background:var(--accent-100);color:#C25A11;font-size:12px;font-weight:600;}

/* ---------- article layout ---------- */
.article-main{padding:56px 0 72px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:56px;align-items:start;}
.article-body{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:40px;font-size:17px;line-height:1.9;color:var(--ink-700);overflow-wrap:break-word;}
.article-body>*:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{font-size:24px;line-height:1.4;margin:40px 0 16px;padding-left:14px;position:relative;scroll-margin-top:180px;}
.article-body h2::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--brand-600);}
.article-body h3{font-size:19px;line-height:1.5;margin:28px 0 12px;scroll-margin-top:180px;}
.article-body h4{font-size:17px;margin:22px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:22px;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:8px;}
.article-body li::marker{color:var(--brand-600);}
.article-body strong{color:var(--ink-900);}
.article-body blockquote{margin:24px 0;padding:20px 22px;background:var(--brand-100);border-left:4px solid var(--brand-600);border-radius:0 12px 12px 0;color:var(--ink-700);}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);margin:24px 0;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;text-align:center;color:var(--ink-500);margin-top:10px;}
.article-body a{color:var(--brand-600);border-bottom:1px solid var(--brand-200);}
.article-body a:hover{color:var(--accent-500);border-bottom-color:var(--accent-500);}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:0 0 1.2em;display:block;overflow-x:auto;white-space:nowrap;}
.article-body thead th{background:var(--brand-100);color:var(--brand-700);text-align:left;padding:12px 14px;font-weight:600;}
.article-body tbody td{padding:12px 14px;border-bottom:1px solid var(--line);}
.article-body tbody tr:nth-child(even){background:var(--bg);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}

.article-foot{margin-top:28px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:22px 24px;}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.tag-row .tag-label{font-size:14px;color:var(--ink-500);}
.tag{padding:5px 13px;border-radius:var(--r-chip);background:var(--bg);border:1px solid var(--line);font-size:13px;color:var(--ink-700);}
.tag:hover{background:var(--brand-100);color:var(--brand-600);border-color:var(--brand-200);}
.foot-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- sidebar ---------- */
.article-side{position:sticky;top:180px;display:flex;flex-direction:column;gap:20px;}
.side-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:22px;}
.side-title{font-size:16px;font-weight:700;color:var(--ink-900);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-title::before{content:"";width:4px;height:15px;border-radius:2px;background:var(--accent-500);}
.toc li{margin-bottom:2px;}
.toc a{display:block;padding:7px 10px;border-radius:8px;font-size:14.5px;color:var(--ink-700);border-left:2px solid transparent;line-height:1.5;}
.toc a:hover{background:var(--brand-100);color:var(--brand-600);border-left-color:var(--brand-600);}
.toc-empty{font-size:14px;color:var(--ink-500);padding:4px 2px;}
.side-cta{background:var(--ink-900);border-color:var(--ink-900);color:#C6D4E3;}
.side-cta .side-title{color:#fff;}
.side-cta .side-title::before{background:var(--accent-500);}
.side-cta p{font-size:14.5px;line-height:1.8;margin-bottom:16px;color:#B9C7D6;}
.side-cta .side-lines{margin-bottom:16px;}
.side-cta .side-lines li{display:flex;gap:9px;align-items:flex-start;font-size:14px;margin-bottom:9px;color:#C6D4E3;}
.side-cta .side-lines i{color:var(--teal-500);margin-top:5px;}
.side-cta .btn-accent{width:100%;}
.side-contact a{display:flex;align-items:center;gap:10px;font-size:14.5px;padding:7px 0;color:var(--ink-700);}
.side-contact a:hover{color:var(--brand-600);}
.side-contact i{color:var(--teal-500);width:16px;}

/* ---------- empty state ---------- */
.empty-state{background:var(--brand-100);border:1px solid var(--brand-200);border-radius:var(--r-card);min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:12px;padding:36px 24px;}
.empty-state i{font-size:30px;color:var(--brand-600);}
.empty-state h2{font-size:20px;}
.empty-state p{font-size:15px;color:var(--ink-500);max-width:420px;}

/* ---------- related ---------- */
.related{padding:64px 0 8px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.28;}
.section-head p{margin-top:10px;font-size:15.5px;color:var(--ink-500);}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;}
.rel-card{display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-2);overflow:hidden;transition:transform .25s ease,box-shadow .25s ease;}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);}
.rel-thumb{position:relative;aspect-ratio:16/10;background:var(--brand-100);overflow:hidden;}
.rel-thumb img{width:100%;height:100%;object-fit:cover;}
.rel-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.rel-body h3{font-size:17px;line-height:1.45;font-weight:600;}
.rel-body h3 a{color:var(--ink-900);}
.rel-body h3 a:hover{color:var(--brand-600);}
.rel-body p{font-size:14.5px;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-500);}

/* ---------- cta band ---------- */
.cta-wrap{padding:64px 0 80px;}
.cta-band{background:var(--brand-100);border:1px solid var(--brand-200);border-radius:16px;padding:38px 40px;display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;}
.cta-band p{margin-top:10px;font-size:15.5px;color:var(--ink-500);max-width:640px;}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--ink-900);color:#B9C7D6;padding:64px 0 28px;overflow:hidden;}
.site-footer::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);background-size:92px 92px;opacity:.45;pointer-events:none;}
.site-footer::after{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:linear-gradient(90deg,transparent,var(--accent-500),transparent);opacity:.85;}
.footer-inner{position:relative;z-index:1;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:inline-flex;align-items:center;gap:11px;margin-bottom:16px;font-size:19px;font-weight:800;color:#fff;line-height:1;}
.footer-brand .brand-mark{border-color:#7FA8DE;}
.footer-brand .brand-mark::before{border-color:rgba(255,255,255,.35);}
.footer-brand:hover{color:#fff;}
.footer-grid p{font-size:14.5px;line-height:1.85;color:#9FB1C4;max-width:400px;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600;}
.footer-col ul li{margin-bottom:10px;font-size:14.5px;}
.footer-col a{color:#B9C7D6;}
.footer-col a:hover{color:var(--accent-500);}
.footer-contact li{display:flex;align-items:center;gap:10px;}
.footer-contact i{color:var(--teal-500);width:16px;}
.footer-bottom{margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;font-size:13.5px;color:#8FA3B8;}

/* ---------- offcanvas ---------- */
.offcanvas{border:0;}
.offcanvas-header{border-bottom:1px solid var(--line);}
.offcanvas-title{font-size:17px;font-weight:800;color:var(--ink-900);}
.offcanvas-body{display:flex;flex-direction:column;gap:6px;padding:20px;}
.offcanvas-body a:not(.btn-main){padding:12px 14px;border-radius:10px;color:var(--ink-700);font-weight:500;font-size:15px;}
.offcanvas-body a:not(.btn-main):hover{background:var(--brand-100);color:var(--brand-600);}
.offcanvas-body .btn-main{margin-top:14px;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .article-side{position:static;top:auto;}
}
@media (max-width:991px){
  .container-x{padding:0 20px;}
  .topbar-note{display:none;}
  .topbar-inner{justify-content:flex-end;}
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .mainbar-inner{height:66px;gap:16px;}
  .chipbar-inner{padding:9px 20px;}
  .article-main{padding:44px 0 56px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:767px){
  .container-x{padding:0 16px;}
  .chipbar-inner{padding:9px 16px;}
  .article-head{padding:20px 0 28px;}
  .article-head h1{margin:14px 0 16px;}
  .article-body{padding:24px;font-size:16px;line-height:1.85;}
  .article-body h2{font-size:21px;margin:32px 0 14px;}
  .article-body h3{font-size:18px;}
  .article-foot{padding:20px;}
  .cta-band{padding:26px;border-radius:14px;}
  .cta-wrap{padding:48px 0 60px;}
  .related{padding:52px 0 4px;}
  .rel-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .site-footer{padding:48px 0 24px;}
  .footer-bottom{margin-top:32px;flex-direction:column;align-items:flex-start;}
}
@media (max-width:575px){
  .mainbar-actions .btn-main{display:none;}
  .topbar-links{gap:12px;font-size:12.5px;}
  .article-head h1{font-size:26px;}
  .meta-row{gap:10px 14px;font-size:13px;}
  .btn-main,.btn-accent,.btn-ghost{padding:11px 20px;font-size:14.5px;}
}

/* roulang page: category1 */
:root{
  --brand-600:#1B5AAE;
  --brand-700:#14498F;
  --brand-100:#E8F0FB;
  --brand-200:#C9DDF5;
  --accent-500:#F27A2B;
  --accent-100:#FEEDE1;
  --teal-500:#2E9E8F;
  --ink-900:#0E2136;
  --ink-700:#2A3B4D;
  --ink-500:#5C6E80;
  --line:#E3EAF2;
  --bg:#F7F9FC;
  --white:#FFFFFF;
  --sh-1:0 2px 8px rgba(21,58,102,.05);
  --sh-2:0 6px 24px rgba(21,58,102,.07);
  --sh-3:0 14px 40px rgba(21,58,102,.12);
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-chip:999px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--accent-500);text-decoration:underline;text-underline-offset:3px;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(27,90,174,.35);outline-offset:2px;border-radius:4px;}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1400px){.container-x{max-width:1240px;}}
@media (max-width:991px){.container-x{padding:0 20px;}}
@media (max-width:575px){.container-x{padding:0 16px;}}

/* ============ 页头 ============ */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;}
.topbar{height:34px;background:var(--bg);border-bottom:1px solid var(--line);overflow:hidden;transition:height .25s ease;}
.site-header.is-scrolled .topbar{height:0;border-bottom-color:transparent;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:34px;font-size:13px;color:var(--ink-500);}
.topbar-note{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-contact{display:flex;align-items:center;gap:14px;white-space:nowrap;}
.topbar-contact a{color:var(--ink-500);font-size:13px;display:inline-flex;align-items:center;gap:6px;}
.topbar-contact a:hover{color:var(--brand-600);text-decoration:none;}
.topbar-contact i{color:var(--brand-600);}
.navbar-main{position:relative;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .25s ease;}
.site-header.is-scrolled .navbar-main{box-shadow:var(--sh-1);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:28px;height:28px;border-radius:50%;
  border:2px solid var(--brand-600);position:relative;display:inline-block;flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;right:-3px;top:50%;transform:translateY(-50%);
  width:8px;height:8px;border-radius:50%;background:var(--accent-500);
}
.brand-name{font-size:19px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em;}
.brand:hover{text-decoration:none;}
.brand:hover .brand-name{color:var(--brand-600);}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{
  font-size:15px;font-weight:500;color:var(--ink-700);padding:6px 0;position:relative;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent-500);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-links a:hover{color:var(--brand-600);text-decoration:none;}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--brand-600);font-weight:600;}
.nav-links a.active::after{transform:scaleX(1);background:var(--brand-600);}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink-900);align-items:center;justify-content:center;font-size:17px;cursor:pointer;
  transition:all .2s ease;
}
.nav-toggle:hover{background:var(--brand-100);border-color:var(--brand-200);color:var(--brand-700);}
.chipbar{background:#fff;border-bottom:1px solid var(--line);padding:10px 0;}
.chip-scroll{display:flex;gap:10px;overflow-x:auto;scrollbar-width:none;}
.chip-scroll::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;padding:8px 18px;border-radius:var(--r-chip);
  background:#fff;border:1px solid var(--line);color:var(--ink-700);
  font-size:14px;font-weight:500;white-space:nowrap;transition:all .2s ease;
}
.chip:hover{background:var(--brand-100);color:var(--brand-700);border-color:var(--brand-200);text-decoration:none;}
.chip.is-active{background:var(--brand-600);color:#fff;border-color:var(--brand-600);box-shadow:var(--sh-1);}
.chip.is-active:hover{background:var(--brand-700);color:#fff;}

/* ============ 按钮 ============ */
.btn-main,.btn-accent,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1.2;
  padding:12px 26px;border:1px solid transparent;cursor:pointer;
  transition:background-color .22s ease,color .22s ease,box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.btn-main{background:var(--brand-600);color:#fff;}
.btn-main:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);text-decoration:none;}
.btn-accent{background:var(--accent-500);color:#fff;}
.btn-accent:hover{background:#d9661c;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);text-decoration:none;}
.btn-ghost{background:transparent;border-color:var(--brand-200);color:var(--brand-600);}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-700);border-color:var(--brand-200);text-decoration:none;}
.btn-sm-main{padding:10px 20px;font-size:14px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);
}
.link-arrow i{transition:transform .2s ease;font-size:12px;}
.link-arrow:hover{color:var(--accent-500);text-decoration:none;}
.link-arrow:hover i{transform:translateX(3px);}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section-white{background:#fff;}
.section-soft{background:var(--bg);}
.section-head{max-width:740px;margin-bottom:44px;}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.28;font-weight:700;margin-bottom:14px;letter-spacing:-.01em;}
.section-head p{color:var(--ink-500);font-size:16px;margin:0;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--brand-600);background:var(--brand-100);padding:5px 14px;border-radius:var(--r-chip);margin-bottom:16px;
}
.point-list li{position:relative;padding-left:22px;margin-bottom:14px;font-size:16px;color:var(--ink-700);line-height:1.75;}
.point-list li:last-child{margin-bottom:0;}
.point-list li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;background:var(--brand-600);
}

/* ============ 分类首屏 ============ */
.category-hero{
  position:relative;padding:92px 0 0;color:#fff;overflow:hidden;
  background-image:linear-gradient(100deg,rgba(12,30,50,.92) 0%,rgba(14,33,54,.78) 55%,rgba(20,73,143,.72) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.category-hero::after{
  content:"";position:absolute;right:-170px;top:-140px;width:580px;height:580px;
  border:1px solid rgba(255,255,255,.14);border-radius:50%;pointer-events:none;
}
.hero-inner{position:relative;z-index:1;}
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.66);margin-bottom:22px;flex-wrap:wrap;}
.crumb a{color:rgba(255,255,255,.8);}
.crumb a:hover{color:var(--accent-500);text-decoration:none;}
.crumb-current{color:#fff;}
.hero-badge{
  display:inline-block;font-size:13px;font-weight:600;color:#fff;
  border:1px solid rgba(255,255,255,.32);background:rgba(255,255,255,.10);
  padding:6px 14px;border-radius:var(--r-chip);margin-bottom:20px;
}
.category-hero h1{
  color:#fff;font-size:clamp(30px,4.2vw,48px);line-height:1.2;font-weight:800;
  letter-spacing:-.02em;max-width:820px;margin-bottom:20px;
}
.hero-sub{font-size:17px;line-height:1.85;color:rgba(255,255,255,.84);max-width:720px;margin-bottom:32px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.category-hero .btn-ghost{border-color:rgba(255,255,255,.45);color:#fff;}
.category-hero .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.6);}
.trust-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border-top:1px solid rgba(255,255,255,.18);margin-top:52px;padding:28px 0 34px;
}
.trust-item{padding:0 22px;border-right:1px solid rgba(255,255,255,.14);}
.trust-item:first-child{padding-left:0;}
.trust-item:last-child{border-right:0;}
.trust-num{display:block;font-size:22px;font-weight:800;color:#fff;line-height:1.3;margin-bottom:6px;letter-spacing:-.01em;}
.trust-label{display:block;font-size:13px;line-height:1.6;color:rgba(255,255,255,.7);}

/* ============ 简介 ============ */
.intro-grid{display:grid;grid-template-columns:5fr 7fr;gap:52px;align-items:start;}
.intro-grid h2{font-size:clamp(24px,3vw,34px);line-height:1.28;font-weight:700;letter-spacing:-.01em;}
.intro-body p{font-size:16px;color:var(--ink-700);line-height:1.85;margin-bottom:18px;}
.intro-points{margin-top:28px;padding-top:26px;border-top:1px solid var(--line);}

/* ============ 卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.gear-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-2);
  transition:transform .25s ease,box-shadow .25s ease;
}
.gear-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);}
.gear-thumb{position:relative;display:block;aspect-ratio:16/10;overflow:hidden;background:var(--brand-100);}
.gear-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.gear-card:hover .gear-thumb img{transform:scale(1.05);}
.gear-tag{
  position:absolute;left:14px;top:14px;background:rgba(27,90,174,.94);color:#fff;
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:6px;letter-spacing:.02em;
}
.gear-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.gear-body h3{font-size:17px;line-height:1.45;font-weight:600;}
.gear-body h3 a{color:var(--ink-900);}
.gear-body h3 a:hover{color:var(--brand-600);text-decoration:none;}
.gear-body p{font-size:14px;line-height:1.72;color:var(--ink-500);margin:0;}
.gear-body .link-arrow{margin-top:auto;padding-top:8px;}

/* ============ 交叉导航 ============ */
.cross-nav{display:flex;flex-wrap:wrap;gap:12px;}
.cross-note{margin-top:20px;font-size:14px;color:var(--ink-500);}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:5fr 7fr;gap:52px;align-items:start;}
.faq-aside h2{font-size:clamp(24px,3vw,34px);line-height:1.28;font-weight:700;margin-bottom:16px;letter-spacing:-.01em;}
.faq-aside p{color:var(--ink-500);font-size:16px;margin-bottom:24px;}
.faq-accordion .accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent;}
.faq-accordion .accordion-header{margin:0;}
.faq-accordion .accordion-button{
  background:transparent;color:var(--ink-900);font-size:17px;font-weight:600;line-height:1.5;
  padding:20px 44px 20px 0;box-shadow:none;border-radius:0 !important;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--brand-600);background:transparent;box-shadow:none;}
.faq-accordion .accordion-button:focus{box-shadow:none;border-color:transparent;}
.faq-accordion .accordion-button::after{
  content:"+";background-image:none;font-size:22px;font-weight:400;line-height:1;
  width:auto;height:auto;transform:none;color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;
  position:absolute;right:6px;top:50%;margin:0;transform:translateY(-50%);
}
.faq-accordion .accordion-button:not(.collapsed)::after{content:"−";transform:translateY(-50%);}
.faq-accordion .accordion-body{padding:0 32px 22px 0;font-size:15px;line-height:1.85;color:var(--ink-500);}

/* ============ CTA 带 ============ */
.cta-band{background:var(--brand-100);border-top:1px solid var(--brand-200);border-bottom:1px solid var(--brand-200);padding:56px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700;margin-bottom:10px;letter-spacing:-.01em;}
.cta-inner p{color:var(--ink-500);font-size:15px;margin:0;max-width:560px;}

/* ============ 页脚 ============ */
.site-footer{position:relative;background:var(--ink-900);color:rgba(255,255,255,.72);padding:72px 0 0;overflow:hidden;}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:34px 34px;
}
.site-footer::after{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--accent-500);}
.footer-inner{position:relative;z-index:1;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:20px;font-weight:800;margin-bottom:16px;}
.footer-brand:hover{color:#fff;text-decoration:none;}
.footer-brand .brand-mark{border-color:var(--accent-500);}
.footer-brand .brand-mark::after{background:#fff;}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:350px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;letter-spacing:.01em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li:last-child{margin-bottom:0;}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px;}
.footer-col a:hover{color:var(--accent-500);text-decoration:none;}
.footer-contact li{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:12px;}
.footer-contact i{color:var(--accent-500);width:16px;text-align:center;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:32px;}
}
@media (max-width:991px){
  .section{padding:64px 0;}
  .nav-links{
    position:absolute;left:0;right:0;top:100%;display:none;flex-direction:column;align-items:stretch;
    gap:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--sh-2);padding:8px 0;
  }
  .nav-links.nav-open{display:flex;}
  .nav-links a{padding:14px 20px;font-size:15px;border-bottom:1px solid var(--line);}
  .nav-links a:last-child{border-bottom:0;}
  .nav-links a::after{display:none;}
  .nav-links a.active{background:var(--brand-100);}
  .nav-toggle{display:inline-flex;}
  .card-grid{grid-template-columns:repeat(2,1fr);gap:20px;}
  .intro-grid{grid-template-columns:1fr;gap:28px;}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .category-hero{padding-top:64px;}
  .trust-bar{grid-template-columns:repeat(2,1fr);row-gap:24px;margin-top:40px;}
  .trust-item{padding:0 18px;}
  .trust-item:nth-child(2){border-right:0;}
  .trust-item:nth-child(3){padding-left:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .category-hero::after{display:none;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-inner .btn-accent{width:100%;}
}
@media (max-width:575px){
  .section{padding:48px 0;}
  .topbar-note{display:none;}
  .topbar-inner{justify-content:flex-end;}
  .card-grid{grid-template-columns:1fr;}
  .trust-bar{grid-template-columns:1fr;}
  .trust-item{padding:0 0 0 0;border-right:0;border-bottom:1px solid rgba(255,255,255,.14);padding-bottom:18px;}
  .trust-item:last-child{border-bottom:0;padding-bottom:0;}
  .hero-actions .btn-main,.hero-actions .btn-accent,.hero-actions .btn-ghost{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .faq-accordion .accordion-button{font-size:16px;}
}

/* roulang page: category2 */
:root{
  --brand-600:#1B5AAE;
  --brand-700:#14498F;
  --brand-100:#E8F0FB;
  --brand-200:#C9DDF5;
  --accent-500:#F27A2B;
  --accent-100:#FEEDE1;
  --teal-500:#2E9E8F;
  --ink-900:#0E2136;
  --ink-700:#2A3B4D;
  --ink-500:#5C6E80;
  --line:#E3EAF2;
  --bg:#F7F9FC;
  --white:#FFFFFF;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-chip:999px;
  --sh-1:0 2px 8px rgba(21,58,102,.05);
  --sh-2:0 6px 24px rgba(21,58,102,.07);
  --sh-3:0 14px 40px rgba(21,58,102,.12);
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
a:hover{color:var(--accent-500);text-decoration:underline;text-underline-offset:3px;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:none;box-shadow:0 0 0 3px rgba(27,90,174,.35);border-radius:6px;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}

.container-x{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--bg);
  border-bottom:1px solid var(--line);
  font-size:13px;
  color:var(--ink-500);
}
.topbar-inner{
  height:34px;
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:24px;
}
.topbar-inner a{color:var(--ink-500);}
.topbar-inner a:hover{color:var(--brand-600);text-decoration:none;}
.topbar-inner i{color:var(--brand-600);margin-right:6px;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:var(--sh-1);}
.mainbar{
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:20px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--ink-900);
}
.brand:hover{color:var(--ink-900);text-decoration:none;}
.brand-mark{
  width:22px;height:22px;flex:0 0 auto;
  border:2px solid var(--brand-600);
  border-radius:50%;
  position:relative;
  display:inline-block;
}
.brand-mark::after{
  content:"";position:absolute;right:-4px;top:-4px;
  width:8px;height:8px;border-radius:50%;background:var(--accent-500);
}
.brand-mark::before{
  content:"";position:absolute;left:50%;top:50%;
  width:26px;height:3px;border-radius:3px;
  background:var(--brand-200);
  transform:translate(-50%,-50%) rotate(-28deg);
}
.mainbar-right{display:flex;align-items:center;gap:14px;}

.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{
  font-size:15px;
  font-weight:500;
  color:var(--ink-700);
  padding:8px 0;
  border-bottom:2px solid transparent;
}
.nav-links a:hover{color:var(--brand-600);text-decoration:none;border-bottom-color:var(--accent-500);}
.nav-links a.active{color:var(--brand-600);font-weight:600;border-bottom-color:var(--brand-600);}

.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:10px;
  background:var(--white);
  color:var(--ink-900);
  font-size:17px;
  align-items:center;justify-content:center;
}

/* ---------- 按钮 ---------- */
.btn-main,.btn-accent,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .25s ease,color .25s ease,transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  text-decoration:none;
}
.btn-main{background:var(--brand-600);color:var(--white);}
.btn-main:hover{background:var(--brand-700);color:var(--white);transform:translateY(-1px);box-shadow:var(--sh-2);text-decoration:none;}
.btn-accent{background:var(--accent-500);color:var(--white);}
.btn-accent:hover{background:#d9661c;color:var(--white);transform:translateY(-1px);box-shadow:var(--sh-2);text-decoration:none;}
.btn-ghost{background:transparent;border-color:var(--brand-200);color:var(--brand-600);}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-600);border-color:var(--brand-200);text-decoration:none;}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}

.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand-600);
}
.link-more i{transition:transform .25s ease;font-size:12px;}
.link-more:hover{color:var(--accent-500);text-decoration:none;}
.link-more:hover i{transform:translateX(3px);}

/* ---------- 分类 chip 分段导航 ---------- */
.chipbar-wrap{
  background:var(--white);
  border-bottom:1px solid var(--line);
}
.chipbar{
  height:52px;
  display:flex;
  align-items:center;
  gap:10px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.chipbar::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 18px;
  border:1px solid var(--line);
  border-radius:var(--r-chip);
  background:var(--white);
  color:var(--ink-700);
  font-size:14px;font-weight:500;
  white-space:nowrap;
  transition:all .25s ease;
}
.chip:hover{background:var(--brand-100);color:var(--brand-600);border-color:var(--brand-200);text-decoration:none;}
.chip.active{
  background:var(--brand-600);color:var(--white);
  border-color:var(--brand-600);
  box-shadow:var(--sh-1);
}
.chip.active:hover{background:var(--brand-700);color:var(--white);border-color:var(--brand-700);}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--ink-500);
  padding:20px 0 0;
}
.crumbs a{color:var(--ink-500);}
.crumbs a:hover{color:var(--brand-600);text-decoration:none;}
.crumbs .sep{color:#B7C4D2;}
.crumbs .current{color:var(--ink-900);font-weight:600;}

/* ---------- 分类头部 ---------- */
.cat-hero{
  position:relative;
  background:var(--white);
  border-bottom:1px solid var(--line);
  padding:34px 0 64px;
  overflow:hidden;
}
.cat-hero::after{
  content:"";
  position:absolute;
  right:-140px;top:-120px;
  width:420px;height:420px;
  border:1px solid var(--brand-200);
  border-radius:50%;
  opacity:.55;
  pointer-events:none;
}
.cat-hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:1.12fr .88fr;
  gap:52px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--brand-600);
  background:var(--brand-100);
  border-radius:var(--r-chip);
  padding:6px 14px;
  margin-bottom:18px;
}
.eyebrow i{color:var(--accent-500);}
.cat-hero h1{
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.2;
  letter-spacing:-.02em;
  font-weight:800;
  margin-bottom:18px;
}
.cat-hero .lede{
  font-size:17px;
  line-height:1.85;
  color:var(--ink-700);
  max-width:600px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:28px;margin-top:34px;
  padding-top:24px;border-top:1px solid var(--line);
}
.hero-fact strong{
  display:block;font-size:24px;font-weight:800;color:var(--brand-600);line-height:1.3;
}
.hero-fact span{font-size:13px;color:var(--ink-500);}

.cat-hero-media{position:relative;}
.cat-hero-media img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  border-radius:var(--r-img);
  box-shadow:var(--sh-3);
  background:var(--brand-100);
}
.media-tag{
  position:absolute;left:18px;bottom:18px;
  background:rgba(255,255,255,.94);
  border-radius:10px;
  padding:10px 16px;
  font-size:13px;font-weight:600;color:var(--ink-900);
  box-shadow:var(--sh-1);
  display:inline-flex;align-items:center;gap:8px;
}
.media-tag i{color:var(--teal-500);}

/* ---------- 板块通用 ---------- */
section{position:relative;}
.section{padding:88px 0;}
.section-alt{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{
  font-size:clamp(24px,3vw,34px);
  line-height:1.28;
  letter-spacing:-.01em;
  margin-bottom:14px;
}
.section-head p{font-size:16px;color:var(--ink-500);line-height:1.85;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* ---------- 双栏主布局 ---------- */
.layout-2col{
  display:grid;
  grid-template-columns:minmax(0,1fr) 340px;
  gap:36px;
  align-items:start;
}
.list-panel{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-2);
  padding:8px 24px;
}
.list-item{
  display:grid;
  grid-template-columns:180px minmax(0,1fr);
  gap:22px;
  padding:24px 16px;
  border-radius:var(--r-img);
  border-bottom:1px solid var(--line);
  transition:background-color .25s ease,transform .25s ease,box-shadow .25s ease;
  margin:0 -16px;
}
.list-item:last-child{border-bottom:none;}
.list-item:hover{background:var(--brand-100);box-shadow:var(--sh-1);}
.list-thumb img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:10px;
  background:var(--brand-100);
}
.list-body h3{font-size:17px;line-height:1.45;font-weight:600;margin-bottom:8px;}
.list-body p{font-size:15px;color:var(--ink-500);line-height:1.75;margin-bottom:12px;}
.list-meta{
  display:flex;flex-wrap:wrap;gap:8px;align-items:center;
  font-size:13px;color:var(--ink-500);
}
.badge-soft{
  display:inline-block;
  background:var(--brand-100);
  color:var(--brand-600);
  border-radius:6px;
  padding:4px 10px;
  font-size:12px;font-weight:600;
}
.badge-warn{
  display:inline-block;
  background:var(--accent-100);
  color:#C25A11;
  border-radius:6px;
  padding:4px 10px;
  font-size:12px;font-weight:600;
}

/* ---------- 侧栏 ---------- */
.sticky-side{position:sticky;top:150px;}
.side-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-2);
  padding:24px;
  margin-bottom:20px;
}
.side-card h4{
  font-size:16px;font-weight:700;margin-bottom:16px;
  display:flex;align-items:center;gap:8px;
}
.side-card h4 i{color:var(--brand-600);font-size:15px;}
.side-links li{border-bottom:1px solid var(--line);}
.side-links li:last-child{border-bottom:none;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;
  padding:11px 0;
  font-size:14px;color:var(--ink-700);
}
.side-links a:hover{color:var(--brand-600);text-decoration:none;padding-left:4px;}
.side-links i{font-size:12px;color:var(--brand-200);}
.side-links a:hover i{color:var(--accent-500);}

.side-contact li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14px;color:var(--ink-700);
  padding:7px 0;
}
.side-contact i{color:var(--brand-600);margin-top:5px;width:16px;text-align:center;}
.side-contact a{color:var(--ink-700);}
.side-contact a:hover{color:var(--brand-600);}

.side-cta{
  background:var(--brand-600);
  border-color:var(--brand-600);
  color:var(--white);
}
.side-cta h4{color:var(--white);}
.side-cta h4 i{color:var(--accent-100);}
.side-cta p{font-size:14px;color:rgba(255,255,255,.86);line-height:1.75;margin-bottom:18px;}

/* ---------- 流程时间线 ---------- */
.flow{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  margin-top:12px;
}
.flow::before{
  content:"";
  position:absolute;
  left:22px;right:22px;top:23px;
  height:2px;
  background:var(--brand-200);
  border-radius:2px;
}
.flow-step{position:relative;padding-top:0;}
.flow-dot{
  width:46px;height:46px;
  border-radius:50%;
  background:var(--white);
  border:2px solid var(--brand-600);
  color:var(--brand-600);
  font-weight:800;font-size:15px;
  display:flex;align-items:center;justify-content:center;
  position:relative;z-index:1;
  margin-bottom:20px;
  box-shadow:var(--sh-1);
}
.flow-step h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.flow-step p{font-size:14px;color:var(--ink-500);line-height:1.75;}

/* ---------- 适用场景要点 ---------- */
.point-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}
.point-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-2);
  padding:24px;
  transition:transform .25s ease,box-shadow .25s ease;
}
.point-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);}
.point-icon{
  width:44px;height:44px;
  border-radius:12px;
  background:var(--brand-100);
  color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;margin-bottom:16px;
}
.point-card h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.point-card p{font-size:14px;color:var(--ink-500);line-height:1.75;}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:minmax(0,.82fr) minmax(0,1.18fr);gap:48px;align-items:start;}
.faq-list .accordion-item{
  background:transparent;
  border:none;
  border-bottom:1px solid var(--line);
}
.faq-list .accordion-button{
  background:transparent;
  box-shadow:none;
  padding:20px 44px 20px 0;
  font-size:16px;
  font-weight:600;
  color:var(--ink-900);
  line-height:1.5;
}
.faq-list .accordion-button:not(.collapsed){color:var(--brand-600);background:transparent;}
.faq-list .accordion-button:focus{box-shadow:none;}
.faq-list .accordion-button::after{
  background-image:none;
  content:"+";
  font-size:22px;
  font-weight:400;
  color:var(--brand-600);
  width:auto;height:auto;
  transform:none;
  position:absolute;right:8px;top:50%;
  margin-top:-16px;
  line-height:1;
}
.faq-list .accordion-button:not(.collapsed)::after{content:"−";color:var(--accent-500);}
.faq-list .accordion-body{
  padding:0 40px 22px 0;
  font-size:15px;
  color:var(--ink-500);
  line-height:1.85;
}

/* ---------- 相关分类 chip ---------- */
.rel-chips{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px;}

/* ---------- 结尾转化带 ---------- */
.cta-band{
  background:var(--brand-100);
  border-top:1px solid var(--brand-200);
  border-bottom:1px solid var(--brand-200);
  padding:56px 0;
}
.cta-band-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);line-height:1.32;margin-bottom:10px;}
.cta-band p{font-size:15px;color:var(--ink-700);max-width:640px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);
  color:rgba(255,255,255,.72);
  padding:64px 0 0;
  position:relative;
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;left:-120px;bottom:-160px;
  width:420px;height:420px;
  border:1px solid rgba(255,255,255,.08);
  border-radius:50%;
  pointer-events:none;
}
.footer-inner{position:relative;}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.15fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:19px;font-weight:800;color:var(--white);
  margin-bottom:16px;
}
.footer-brand:hover{color:var(--white);text-decoration:none;}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);}
.footer-col h4{
  font-size:15px;font-weight:700;color:var(--white);
  margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{
  font-size:14px;color:rgba(255,255,255,.7);
}
.footer-col ul a:hover{color:var(--accent-500);text-decoration:none;}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:rgba(255,255,255,.7);}
.footer-contact i{color:var(--accent-500);margin-top:5px;width:16px;text-align:center;}
.footer-contact a{color:rgba(255,255,255,.7);}
.footer-contact a:hover{color:var(--accent-500);text-decoration:none;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--accent-500);
  opacity:.85;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .cat-hero-grid{gap:36px;}
  .layout-2col{grid-template-columns:minmax(0,1fr) 300px;gap:28px;}
}
@media (max-width:991px){
  .container-x{padding:0 20px;}
  .section{padding:64px 0;}
  .cat-hero{padding:28px 0 52px;}
  .cat-hero-grid{grid-template-columns:1fr;gap:32px;}
  .cat-hero::after{display:none;}
  .layout-2col{grid-template-columns:1fr;}
  .sticky-side{position:static;}
  .flow{grid-template-columns:repeat(2,1fr);gap:28px;}
  .flow::before{display:none;}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .point-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .nav-links{
    position:absolute;
    left:0;right:0;top:100%;
    background:var(--white);
    border-bottom:1px solid var(--line);
    box-shadow:var(--sh-2);
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:8px 20px 16px;
    display:none;
  }
  .nav-links.open{display:flex;}
  .nav-links a{width:100%;padding:13px 0;border-bottom:1px solid var(--line);border-left:none;}
  .nav-links a:last-child{border-bottom:none;}
  .nav-links a.active{border-bottom:1px solid var(--line);border-left:none;}
  .nav-toggle{display:inline-flex;}
  .mainbar-right .nav-cta{display:none;}
}
@media (max-width:767px){
  .topbar{display:none;}
  .mainbar{height:64px;}
  .brand{font-size:18px;}
  .section{padding:52px 0;}
  .list-panel{padding:4px 16px;border-radius:12px;}
  .list-item{grid-template-columns:1fr;gap:14px;padding:20px 10px;margin:0 -10px;}
  .list-thumb img{aspect-ratio:16/9;}
  .hero-facts{gap:20px;}
  .hero-fact strong{font-size:20px;}
  .cta-band-inner{flex-direction:column;align-items:flex-start;gap:22px;}
  .point-grid{grid-template-columns:1fr;}
  .crumbs{padding-top:16px;}
}
@media (max-width:575px){
  .container-x{padding:0 16px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
  .flow{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-list .accordion-button{font-size:15px;padding-right:36px;}
}