/* roulang page: index */
:root{
  --brand-900:#7E1220;
  --brand-700:#A81C2C;
  --brand-500:#D22B3F;
  --brand-300:#F0808C;
  --brand-grad:linear-gradient(135deg,#A81C2C 0%,#D22B3F 55%,#F0603F 100%);
  --ink-900:#14161C;
  --ink-700:#2A2E38;
  --ink-500:#5A6070;
  --ink-300:#9AA0AE;
  --bg-100:#F7F4EE;
  --bg-200:#EFEAE1;
  --surface:#FFFFFF;
  --accent:#C8F14A;
  --grass:#1F7A5A;
  --warn:#C9761B;
  --error:#C0392B;
  --border:rgba(20,22,28,.07);
  --line:rgba(20,22,28,.10);
  --r-xl:22px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-1:0 2px 8px rgba(20,22,28,.05);
  --shadow-2:0 12px 28px -12px rgba(20,22,28,.14);
  --shadow-3:0 22px 44px -18px rgba(168,28,44,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-w:248px;
}
*,*::before,*::after{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",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.75;color:var(--ink-700);
  background:var(--bg-100);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:var(--brand-500);color:#fff}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 28px}
.page-shell{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column}
.page-main{flex:1}

/* ============ 左侧竖向导航 ============ */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);z-index:40;
  display:flex;flex-direction:column;padding:22px 16px 18px;
  background:linear-gradient(180deg,#14161C 0%,#241219 52%,#7E1220 100%);
  border-right:1px solid rgba(255,255,255,.07);
  color:#fff;overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:11px;padding:4px 6px 0}
.brand__mark{
  width:40px;height:40px;border-radius:12px;background:var(--brand-grad);
  display:flex;align-items:center;justify-content:center;flex:0 0 40px;
  box-shadow:0 8px 18px -8px rgba(210,43,63,.9);
}
.brand__mark svg{width:22px;height:22px;display:block}
.brand__text{font-size:17px;font-weight:700;line-height:1.25;letter-spacing:.2px;color:#fff}
.brand__sub{display:block;font-size:11.5px;font-weight:400;color:rgba(255,255,255,.5);letter-spacing:.6px;margin-top:3px}
.side-nav__sep{height:1px;background:rgba(255,255,255,.1);margin:18px 6px 16px;box-shadow:0 6px 12px -8px #000 inset}
.nav-label{font-size:11.5px;letter-spacing:1.2px;color:rgba(255,255,255,.4);padding:0 10px;margin-bottom:8px}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;border-radius:10px;
  font-size:14.5px;color:rgba(255,255,255,.74);
  transition:background .22s var(--ease),color .22s var(--ease);
}
.nav-item i{font-size:15px;width:18px;text-align:center;opacity:.85}
.nav-item:hover{background:rgba(255,255,255,.08);color:#fff}
.nav-item.is-active{background:rgba(255,255,255,.13);color:#fff;font-weight:600}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:3px;background:var(--brand-grad);
}
.side-tip{
  margin-top:18px;padding:14px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.09);
}
.side-tip h4{color:#fff;font-size:13.5px;margin-bottom:6px}
.side-tip p{font-size:12.5px;line-height:1.7;color:rgba(255,255,255,.62);margin-bottom:10px}
.side-tip a{font-size:12.5px;color:var(--brand-300);font-weight:600}
.side-tip a:hover{color:#fff}
.side-nav__foot{margin-top:auto;padding-top:18px}
.side-nav__foot .btn{width:100%}

/* ============ 移动端顶栏与抽屉 ============ */
.mobile-bar{
  display:none;position:sticky;top:0;z-index:50;height:56px;
  align-items:center;justify-content:space-between;padding:0 16px;
  background:var(--bg-100);border-bottom:1px solid var(--line);
}
.mobile-bar .brand__text{color:var(--ink-900);font-size:15.5px}
.mobile-bar .brand__sub{display:none}
.burger{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:#fff;display:flex;flex-direction:column;justify-content:center;
  align-items:center;gap:5px;cursor:pointer;transition:.22s var(--ease);
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);transition:.24s var(--ease)}
.burger.is-open span:first-child{transform:translateY(3.5px) rotate(45deg)}
.burger.is-open span:last-child{transform:translateY(-3.5px) rotate(-45deg)}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:284px;z-index:70;
  transform:translateX(-102%);transition:transform .32s var(--ease);
  background:linear-gradient(180deg,#14161C 0%,#241219 55%,#7E1220 100%);
  color:#fff;padding:20px 16px;display:flex;flex-direction:column;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer .nav-item{height:46px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,22,28,.55);z-index:60;
  opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;border:1.5px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),filter .22s var(--ease);
  white-space:nowrap;
}
.btn i{font-size:14px}
.btn--primary{background:var(--brand-grad);color:#fff;box-shadow:var(--shadow-2)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);filter:brightness(1.06)}
.btn--primary:active{transform:translateY(1px)}
.btn--outline{background:var(--surface);color:var(--brand-700);border-color:var(--brand-700)}
.btn--outline:hover{background:rgba(168,28,44,.08)}
.btn--ghost-light{background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.5)}
.btn--ghost-light:hover{background:rgba(255,255,255,.26)}
.btn--ghost{background:transparent;color:rgba(20,22,28,.6);padding:0 8px}
.btn--ghost:hover{color:var(--brand-700)}
.btn--lg{height:52px;padding:0 30px;font-size:16px}
.btn--sm{height:36px;padding:0 16px;font-size:13.5px}
.btn--block{width:100%}

/* ============ 标签 / 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:7px;height:32px;padding:0 14px;
  border-radius:999px;font-size:13px;background:var(--surface);
  color:var(--ink-700);border:1px solid var(--border);
}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--grass);flex:0 0 8px}
.badge--lime{background:var(--accent);color:var(--ink-900);border-color:transparent;font-weight:600}
.badge--lime .dot{background:var(--ink-900)}
.badge--ink{background:var(--ink-900);color:#fff;border-color:transparent}
.badge--ink .dot{background:var(--accent)}
.badge--soft{background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.32)}
.badge--soft .dot{background:var(--accent)}
.tag-line{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;background:rgba(168,28,44,.09);color:var(--brand-700);font-weight:600}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.4px;color:var(--brand-700);margin-bottom:12px}
.eyebrow::before{content:"";display:inline-block;width:18px;height:2px;background:var(--brand-grad);vertical-align:middle;margin-right:8px;border-radius:2px}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;background:var(--ink-900);min-height:560px;display:flex;align-items:center}
.hero__media{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;transform:scale(1.03)}
.hero__veil{position:absolute;inset:0;background:linear-gradient(135deg,rgba(126,18,32,.92) 0%,rgba(168,28,44,.88) 42%,rgba(210,43,63,.82) 72%,rgba(240,96,63,.76) 100%)}
.hero__inner{position:relative;z-index:2;padding-top:72px;padding-bottom:72px;width:100%}
.hero__grid{display:grid;grid-template-columns:1.35fr .85fr;gap:48px;align-items:center}
.hero__content{max-width:660px}
.hero__tag{display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);color:#fff;font-size:13px;margin-bottom:20px}
.hero__tag .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(200,241,74,.22)}
.hero h1{color:#fff;font-size:40px;font-weight:800;line-height:1.22;letter-spacing:-.5px;max-width:16em;margin-bottom:18px}
.hero__sub{color:rgba(255,255,255,.9);font-size:17px;line-height:1.7;margin-bottom:28px;max-width:34em}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero .badge-row{display:flex;flex-wrap:wrap;gap:10px}
.hero__panel{
  background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.26);
  border-radius:var(--r-xl);padding:24px;backdrop-filter:blur(2px);color:#fff;
}
.hero__panel h3{color:#fff;font-size:16px;margin-bottom:14px}
.hero__panel .meta-row{display:flex;align-items:baseline;justify-content:space-between;padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.22);font-size:13.5px}
.hero__panel .meta-row:last-of-type{border-bottom:0}
.hero__panel .meta-row span:first-child{color:rgba(255,255,255,.76)}
.hero__panel .meta-row strong{font-size:15px;color:#fff;font-family:"DIN Alternate","Bebas Neue",system-ui,sans-serif;letter-spacing:.4px}
.hero__panel .panel-note{margin-top:16px;font-size:12.5px;line-height:1.7;color:rgba(255,255,255,.7)}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--alt{background:var(--bg-200)}
.section--plain{background:var(--bg-100)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px;flex-wrap:wrap}
.section-head h2{font-size:28px;font-weight:700;line-height:1.3;max-width:22em}
.section-head .section-sub{font-size:15px;color:var(--ink-500);max-width:36em;margin-top:10px;line-height:1.75}
.section-head .head-link{font-size:14px;font-weight:600;color:var(--brand-700);display:inline-flex;align-items:center;gap:6px}
.section-head .head-link:hover{gap:10px;color:var(--brand-500)}

/* ============ 三步上手 ============ */
.step-card{
  position:relative;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r-md);padding:28px 24px 24px;height:100%;
  box-shadow:var(--shadow-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3)}
.step-card__num{
  font-family:"DIN Alternate","Bebas Neue",system-ui,sans-serif;
  font-size:38px;font-weight:800;line-height:1;color:var(--brand-500);letter-spacing:1px;
}
.step-card:nth-child(2) .step-card__num{color:var(--grass)}
.step-card h3{font-size:19px;margin:14px 0 10px}
.step-card p{font-size:14.5px;color:var(--ink-500);line-height:1.8;margin-bottom:16px}
.step-card__link{font-size:13.5px;font-weight:600;color:var(--brand-700);display:inline-flex;align-items:center;gap:6px}
.step-card__link:hover{gap:10px}

/* ============ 数据徽章条 ============ */
.stat-bar{background:var(--brand-grad);padding:40px 0}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{text-align:left;color:#fff;border-left:1px solid rgba(255,255,255,.28);padding-left:22px}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-item .num{font-family:"DIN Alternate","Bebas Neue",system-ui,sans-serif;font-size:42px;font-weight:800;line-height:1.05;letter-spacing:.5px}
.stat-item .num small{font-size:16px;font-weight:600;margin-left:4px;letter-spacing:0}
.stat-item .label{font-size:13.5px;color:rgba(255,255,255,.86);margin-top:6px}

/* ============ 案例 ============ */
.case-layout{display:grid;grid-template-columns:1.05fr 1fr;grid-template-rows:auto auto;gap:24px}
.case-card{
  border-radius:var(--r-xl);overflow:hidden;border:1px solid var(--border);
  background:var(--surface);box-shadow:var(--shadow-1);
  display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3)}
.case-card--feature{grid-row:span 2;background:var(--brand-grad);border-color:transparent;color:#fff}
.case-card--feature h3{color:#fff}
.case-card__thumb{position:relative;aspect-ratio:16/10;background:var(--bg-200);overflow:hidden}
.case-card__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.case-card:hover .case-card__thumb img{transform:scale(1.04)}
.case-card__body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.case-card--feature .case-card__body{padding:28px 28px 30px}
.case-card h3{font-size:19px;line-height:1.4}
.case-card p{font-size:14.5px;line-height:1.8;color:var(--ink-500)}
.case-card--feature p{color:rgba(255,255,255,.9)}
.case-meta{font-size:12.5px;color:var(--ink-300);margin-top:auto}
.case-card--feature .case-meta{color:rgba(255,255,255,.72)}
.case-data{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:4px}
.case-data div{background:rgba(255,255,255,.96);border-radius:var(--r-sm);padding:14px 16px}
.case-data span{display:block;font-size:12px;color:var(--ink-500)}
.case-data strong{display:block;font-size:22px;font-weight:800;color:var(--brand-700);font-family:"DIN Alternate","Bebas Neue",system-ui,sans-serif;margin-top:4px}

/* ============ 资讯列表（CMS） ============ */
.news-grid{display:flex;flex-wrap:wrap}
.news-card{
  height:100%;display:flex;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3);border-color:rgba(168,28,44,.24)}
.news-card__media{flex:0 0 168px;width:168px;background:var(--bg-200);overflow:hidden}
.news-card__media img{width:100%;height:100%;object-fit:cover;min-height:132px;transition:transform .3s var(--ease)}
.news-card:hover .news-card__media img{transform:scale(1.04)}
.news-card__body{padding:18px 20px;display:flex;flex-direction:column;gap:8px;flex:1;min-width:0}
.news-card__top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.news-card h3{font-size:17px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__excerpt{font-size:13.5px;line-height:1.75;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__time{font-size:12.5px;color:var(--ink-300);white-space:nowrap}
.news-card__more{margin-top:auto;font-size:13px;font-weight:600;color:var(--brand-700);display:inline-flex;align-items:center;gap:6px}
.news-card:hover .news-card__more{gap:10px}
.news-empty{
  width:100%;text-align:center;padding:56px 24px;background:var(--surface);
  border:1px dashed var(--line);border-radius:var(--r-lg);
}
.news-empty i{font-size:30px;color:var(--brand-300)}
.news-empty p{font-size:14.5px;color:var(--ink-500);margin:14px 0 18px}

/* ============ FAQ ============ */
.qa-list{display:flex;flex-direction:column;gap:12px}
.qa-item{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);
  box-shadow:var(--shadow-1);overflow:hidden;transition:box-shadow .22s var(--ease),box-shadow .22s var(--ease);
}
.qa-item:hover{box-shadow:var(--shadow-2)}
.qa-item.is-open{box-shadow:var(--shadow-2),inset 3px 0 0 0 var(--brand-500)}
.qa-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:transparent;border:0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink-900);
}
.qa-q .ico{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;background:var(--bg-200);
  display:flex;align-items:center;justify-content:center;color:var(--brand-700);
  font-size:12px;transition:transform .26s var(--ease),background .22s var(--ease);
}
.qa-item.is-open .qa-q .ico{transform:rotate(90deg);background:var(--accent);color:var(--ink-900)}
.qa-a{display:none;padding:0 24px 22px;font-size:14.5px;line-height:1.8;color:var(--ink-500);max-width:60em}
.qa-item.is-open .qa-a{display:block}

/* ============ CTA + 表单 ============ */
.cta-wrap{padding:0 0 96px}
.cta-card{
  background:var(--bg-100);border:1.5px solid rgba(168,28,44,.28);border-radius:var(--r-xl);
  padding:44px 48px;display:grid;grid-template-columns:5fr 7fr;gap:48px;
  box-shadow:var(--shadow-1);
}
.cta-card h2{font-size:28px;line-height:1.32;margin-bottom:14px;max-width:18em}
.cta-card .cta-lead{font-size:15.5px;color:var(--ink-500);line-height:1.8;margin-bottom:22px}
.cta-card .badge-row{display:flex;flex-wrap:wrap;gap:10px}
.form-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);padding:26px;box-shadow:var(--shadow-1)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin:0 0 16px}
.field--full{grid-column:1 / -1}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-700);margin-bottom:7px}
.field label .req{color:var(--brand-500)}
.field input,.field select{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:var(--bg-100);font-size:14.5px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
  appearance:none;
}
.field select{background-image:linear-gradient(45deg,transparent 50%,var(--ink-500) 50%),linear-gradient(135deg,var(--ink-500) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field input:focus,.field select:focus{outline:none;border-color:var(--brand-500);background:#fff;box-shadow:0 0 0 4px rgba(210,43,63,.14)}
.field input::placeholder{color:var(--ink-300)}
.form-note{font-size:12px;color:var(--ink-300);line-height:1.7;margin-top:12px}
.form-err{display:none;font-size:13px;color:var(--error);margin-top:6px}
.form-err.is-show{display:block}

/* ============ 页脚 ============ */
.footer{background:var(--ink-900);color:rgba(255,255,255,.7);position:relative}
.footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--brand-grad)}
.footer__main{padding:64px 0 48px}
.footer h4{color:#fff;font-size:14.5px;margin-bottom:16px}
.footer .brand__text{color:#fff}
.footer .brand__sub{color:rgba(255,255,255,.45)}
.footer__desc{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.6);margin:16px 0 18px}
.footer__badges{display:flex;flex-wrap:wrap;gap:8px}
.footer__badges .badge{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.14);color:rgba(255,255,255,.82);height:28px;font-size:12px}
.footer__badges .badge .dot{background:var(--accent)}
.footer__links li{margin-bottom:10px}
.footer__links a{font-size:13.5px;color:rgba(255,255,255,.66)}
.footer__links a:hover{color:#fff}
.footer__contact li{font-size:13.5px;margin-bottom:12px;color:rgba(255,255,255,.66);display:flex;gap:9px;align-items:flex-start}
.footer__contact i{color:var(--brand-300);margin-top:5px;font-size:13px}
.footer__bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12.5px;color:rgba(255,255,255,.48)}
.footer__bottom a{color:rgba(255,255,255,.62)}
.footer__bottom a:hover{color:#fff}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero h1{font-size:36px}
  .case-layout{grid-template-columns:1fr 1fr}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:28px 24px}
  .stat-item:nth-child(3){border-left:0;padding-left:0}
}
@media (max-width:1023px){
  .side-nav{display:none}
  .mobile-bar{display:flex}
  .page-shell{margin-left:0}
  .hero__grid{grid-template-columns:1fr;gap:32px}
  .hero{min-height:auto;padding:0}
  .hero__inner{padding-top:56px;padding-bottom:56px}
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .cta-card{grid-template-columns:1fr;gap:32px;padding:36px}
  .cta-wrap{padding-bottom:72px}
  .case-layout{grid-template-columns:1fr}
  .case-card--feature{grid-row:auto}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .hero{min-height:min(480px,88vh)}
  .hero h1{font-size:28px}
  .hero__sub{font-size:15.5px}
  .hero__actions{gap:12px}
  .hero__actions .btn{flex:1 1 auto}
  .section{padding:56px 0}
  .section-head{margin-bottom:28px}
  .section-head h2,.cta-card h2{font-size:22px}
  .stat-grid{grid-template-columns:1fr;gap:20px}
  .stat-item{border-left:0;padding-left:0;border-top:1px solid rgba(255,255,255,.28);padding-top:16px}
  .stat-item:first-child{border-top:0;padding-top:0}
  .stat-item .num{font-size:34px}
  .news-card{flex-direction:column}
  .news-card__media{flex:none;width:100%;aspect-ratio:16/10}
  .news-card__media img{min-height:0}
  .cta-card{padding:26px 20px}
  .form-grid{grid-template-columns:1fr}
  .footer__main{padding:48px 0 32px}
}
@media (max-width:519px){
  .hero h1{font-size:25px}
  .btn--lg{width:100%}
  .case-data{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --brand-900:#7E1220;
  --brand-700:#A81C2C;
  --brand-500:#D22B3F;
  --brand-300:#F0808C;
  --grad:linear-gradient(135deg,#A81C2C 0%,#D22B3F 55%,#F0603F 100%);
  --ink-900:#14161C;
  --ink-700:#2A2E38;
  --ink-500:#5A6070;
  --ink-300:#9AA0AE;
  --bg-100:#F7F4EE;
  --bg-200:#EFEAE1;
  --surface:#FFFFFF;
  --accent:#C8F14A;
  --grass:#1F7A5A;
  --warn:#C9761B;
  --danger:#C0392B;
  --line:rgba(20,22,28,.07);
  --line-strong:rgba(20,22,28,.12);
  --radius-lg:22px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-1:0 2px 8px rgba(20,22,28,.05);
  --shadow-2:0 12px 28px -12px rgba(20,22,28,.14);
  --shadow-3:0 22px 44px -18px rgba(168,28,44,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-w:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--bg-100);
  color:var(--ink-700);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 28px}

/* ============ 品牌与左侧导航 ============ */
.brand{display:flex;align-items:center;gap:12px;color:#fff}
.brand__mark{width:40px;height:40px;flex:none;border-radius:12px;background:var(--grad);display:grid;place-items:center}
.brand__mark svg{width:24px;height:24px}
.brand__text{display:block;font-size:17px;font-weight:700;color:#fff;letter-spacing:.2px;line-height:1.25}
.brand__sub{display:block;font-size:10px;letter-spacing:.18em;color:rgba(255,255,255,.5);margin-top:2px}
.mobile-bar .brand__text{color:var(--ink-900)}

.side-nav{
  position:fixed;top:0;left:0;width:284px;height:100vh;z-index:1000;
  display:flex;flex-direction:column;gap:18px;
  padding:22px 16px 20px;overflow-y:auto;
  background:linear-gradient(180deg,#14161C 0%,#1B1720 58%,#7E1220 100%);
  transform:translateX(-100%);
  transition:transform .28s var(--ease);
  box-shadow:12px 0 32px -20px rgba(20,22,28,.6);
}
body.nav-open .side-nav{transform:translateX(0)}
.side-nav__sep{height:1px;background:linear-gradient(90deg,rgba(255,255,255,.22),rgba(255,255,255,0));box-shadow:0 12px 12px -12px rgba(0,0,0,.5)}
.nav-label{font-size:11px;letter-spacing:.2em;color:rgba(255,255,255,.38);padding-left:12px;text-transform:uppercase}
.nav-list{display:flex;flex-direction:column;gap:6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;height:44px;padding:0 12px;
  border-radius:10px;font-size:14.5px;color:rgba(255,255,255,.76);transition:background .22s var(--ease),color .22s var(--ease);
}
.nav-item i{width:18px;font-size:15px;text-align:center;color:rgba(255,255,255,.55);transition:color .22s var(--ease)}
.nav-item:hover{background:rgba(255,255,255,.08);color:#fff}
.nav-item:hover i{color:var(--brand-300)}
.nav-item.is-active{background:rgba(255,255,255,.12);color:#fff;font-weight:600}
.nav-item.is-active i{color:#fff}
.nav-item.is-active::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;background:var(--grad)}
.side-tip{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:14px 14px 16px}
.side-tip h4{font-size:14px;color:#fff;font-weight:700;margin-bottom:6px}
.side-tip p{font-size:12.5px;line-height:1.7;color:rgba(255,255,255,.66)}
.side-tip a{display:inline-flex;align-items:center;gap:6px;margin-top:10px;font-size:12.5px;color:var(--accent)}
.side-tip a:hover{color:#fff}
.side-nav__foot{margin-top:auto}

/* ============ 按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border:0;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;cursor:pointer;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),filter .22s var(--ease),color .22s var(--ease);
}
.btn--primary{background:var(--grad);color:#fff;box-shadow:var(--shadow-2)}
.btn--primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:var(--shadow-3);color:#fff}
.btn--primary:active{transform:translateY(1px)}
.btn--outline{background:#fff;border:1.5px solid var(--brand-700);color:var(--brand-700)}
.btn--outline:hover{background:rgba(168,28,44,.08);transform:translateY(-2px);color:var(--brand-900)}
.btn--ghost{background:transparent;color:var(--ink-500)}
.btn--ghost:hover{color:var(--brand-700)}
.btn--sm{height:36px;padding:0 16px;font-size:13.5px;border-radius:10px}
.btn--block{width:100%}
.badge{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;
  border-radius:999px;background:var(--accent);color:var(--ink-900);
  font-size:13px;font-weight:600;white-space:nowrap;
}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--brand-700);flex:none}
.badge--ink{background:var(--ink-900);color:#fff}
.badge--ink .dot{background:var(--accent)}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  background:var(--bg-200);color:var(--ink-500);font-size:12.5px;
}
.tag--brand{background:rgba(168,28,44,.1);color:var(--brand-700);font-weight:600}

/* ============ 移动端顶部栏 ============ */
.mobile-bar{
  position:sticky;top:0;z-index:900;height:56px;padding:0 18px;
  display:flex;align-items:center;justify-content:space-between;
  background:var(--bg-100);border-bottom:1px solid var(--line-strong);
}
.mobile-bar .brand__mark{width:34px;height:34px;border-radius:10px}
.mobile-bar .brand__mark svg{width:20px;height:20px}
.mobile-bar .brand__text{font-size:15.5px}
.burger{width:42px;height:42px;display:grid;place-items:center;gap:5px;border:0;background:transparent;cursor:pointer;border-radius:10px}
.burger span{display:block;width:20px;height:2px;background:var(--ink-900);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
body.nav-open .burger span:first-child{transform:translateY(3.5px) rotate(45deg)}
body.nav-open .burger span:last-child{transform:translateY(-3.5px) rotate(-45deg)}

/* ============ 主体骨架 ============ */
.page{padding:32px 0 64px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);margin-bottom:16px}
.crumbs a:hover{color:var(--brand-700)}
.crumbs .sep{color:var(--ink-300)}
.crumbs .current{
  color:var(--ink-900);max-width:min(60vw,420px);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:36px;align-items:start}
.article-main{max-width:760px}
.article-side{display:none}

.article-title{
  font-size:34px;line-height:1.3;font-weight:800;letter-spacing:-.5px;
  color:var(--ink-900);margin-bottom:16px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  padding-top:16px;border-top:1px solid var(--line-strong);
  font-size:13px;color:var(--ink-500);margin-bottom:22px;
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px}
.article-meta i{color:var(--brand-500)}

.article-body{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);padding:48px;overflow-wrap:break-word;
}
.article-body h2{font-size:24px;line-height:1.35;font-weight:700;color:var(--ink-900);margin:32px 0 16px}
.article-body h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--ink-900);margin:24px 0 12px}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink-900);margin:20px 0 10px}
.article-body p{font-size:16px;line-height:1.8;color:#33373F;margin-bottom:1em}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:20px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:.5em;line-height:1.8}
.article-body ul li::marker{color:var(--brand-500)}
.article-body ol li::marker{color:var(--brand-500);font-weight:700}
.article-body a{color:var(--brand-700);border-bottom:1px solid rgba(168,28,44,.3)}
.article-body a:hover{color:var(--brand-900);border-bottom-color:var(--brand-900)}
.article-body strong{color:var(--ink-900)}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--bg-100);
  border-left:3px solid var(--brand-500);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--ink-700);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-sm);margin:20px 0 8px;height:auto}
.article-body figure{margin:20px 0}
.article-body figcaption{font-size:13px;color:var(--ink-500);margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px}
.article-body th,.article-body td{padding:12px 14px;text-align:left;border:0}
.article-body thead th{background:var(--bg-200);color:var(--ink-900);font-weight:600}
.article-body tbody tr:nth-child(even){background:var(--bg-100)}
.article-body code{background:var(--bg-200);color:var(--brand-900);padding:2px 6px;border-radius:6px;font-size:14px}
.article-body hr{border:0;border-top:1px solid var(--line-strong);margin:32px 0}

.article-empty{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);padding:56px 32px;text-align:center;
}
.article-empty i{font-size:34px;color:var(--ink-300);margin-bottom:16px;display:block}
.article-empty h1{font-size:24px;color:var(--ink-900);font-weight:800;margin-bottom:10px}
.article-empty p{font-size:14.5px;color:var(--ink-500);max-width:420px;margin:0 auto 22px}

.article-foot{
  max-width:760px;margin-top:28px;display:flex;flex-wrap:wrap;gap:18px;
  align-items:center;justify-content:space-between;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.share-row{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-500)}
.share-row a{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line-strong);
  background:#fff;display:grid;place-items:center;color:var(--ink-500);
  transition:transform .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.share-row a:hover{color:var(--brand-700);border-color:var(--brand-300);transform:translateY(-3px)}

.prevnext{max-width:760px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:22px}
.prevnext a{
  display:flex;flex-direction:column;gap:6px;padding:18px 20px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-md);box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.prevnext a:hover{transform:translateY(-4px);box-shadow:var(--shadow-3)}
.prevnext .k{font-size:12px;color:var(--ink-500);letter-spacing:.06em}
.prevnext .t{font-size:15.5px;font-weight:600;color:var(--ink-900);display:flex;align-items:center;gap:8px}
.prevnext .t i{color:var(--brand-500);font-size:13px}

.section{margin-top:56px}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:26px}
.section__head h2{font-size:28px;line-height:1.3;font-weight:700;color:var(--ink-900)}
.section__head p{font-size:14px;color:var(--ink-500);margin-top:8px}
.link-more{font-size:14px;font-weight:600;color:var(--brand-700);display:inline-flex;align-items:center;gap:8px;white-space:nowrap}
.link-more:hover{color:var(--brand-900)}
.link-more i{transition:transform .22s var(--ease)}
.link-more:hover i{transform:translateX(4px)}

.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3)}
.post-card__media{aspect-ratio:16/10;background:var(--bg-200);overflow:hidden}
.post-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.post-card:hover .post-card__media img{transform:scale(1.04)}
.post-card__body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-card__top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.post-card h3{font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.45}
.post-card p{font-size:13.5px;line-height:1.75;color:var(--ink-500)}
.post-card .read{
  margin-top:auto;font-size:13.5px;font-weight:600;color:var(--brand-700);
  display:inline-flex;align-items:center;gap:6px;
}

.cta-strip{
  margin-top:56px;background:var(--surface);border:1.5px solid var(--brand-300);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-2);padding:32px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
}
.cta-strip h2{font-size:22px;font-weight:800;color:var(--ink-900);line-height:1.35}
.cta-strip p{font-size:14.5px;color:var(--ink-500);margin-top:10px;max-width:560px}
.cta-strip .badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}

/* ============ 侧栏 ============ */
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  box-shadow:var(--shadow-1);padding:20px;margin-bottom:20px;
}
.side-card h3{font-size:16px;font-weight:700;color:var(--ink-900);margin-bottom:14px}
.side-list li a{
  display:block;padding:11px 0;border-bottom:1px dashed var(--line-strong);
  font-size:14px;color:var(--ink-700);line-height:1.6;
}
.side-list li:last-child a{border-bottom:0}
.side-list li a:hover{color:var(--brand-700)}
.side-card--cta{background:var(--grad);border:0;color:#fff}
.side-card--cta h3{color:#fff}
.side-card--cta p{font-size:13.5px;line-height:1.75;color:rgba(255,255,255,.88);margin-bottom:16px}
.side-card--cta .btn--primary{background:#fff;color:var(--brand-900);box-shadow:0 10px 24px -12px rgba(20,22,28,.5)}
.side-card--cta .btn--primary:hover{filter:none;background:#fff;color:var(--brand-900)}

/* ============ 页脚 ============ */
.footer{
  position:relative;margin-top:72px;padding-top:56px;background:var(--ink-900);
  color:rgba(255,255,255,.7);
}
.footer::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad)}
.footer__desc{font-size:13.5px;line-height:1.75;color:rgba(255,255,255,.6);margin:16px 0 18px;max-width:290px}
.footer__badges{display:flex;flex-wrap:wrap;gap:10px}
.footer__badges .badge{background:rgba(255,255,255,.08);color:rgba(255,255,255,.86);height:30px;font-size:12.5px}
.footer__badges .dot{background:var(--accent)}
.footer h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer__links{display:flex;flex-direction:column;gap:10px}
.footer__links a{font-size:14px;color:rgba(255,255,255,.7)}
.footer__links a:hover{color:var(--brand-300)}
.footer__contact{display:flex;flex-direction:column;gap:12px;font-size:14px}
.footer__contact li{display:flex;gap:10px;align-items:flex-start}
.footer__contact i{color:var(--brand-300);width:18px;margin-top:4px}
.footer__bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.08);
  padding-top:20px;padding-bottom:22px;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer__bottom a:hover{color:var(--brand-300)}

/* ============ 响应式 ============ */
@media (min-width:1024px){
  body{padding-left:var(--nav-w)}
  .side-nav{width:var(--nav-w);transform:none;box-shadow:none}
  .mobile-bar{display:none}
  .page{padding:44px 0 80px}
}
@media (max-width:1279px){
  .article-side{display:none}
}
@media (min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px}
  .article-side{display:block}
  .article-main,.article-foot,.prevnext{max-width:760px}
}
@media (max-width:1023px){
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .article-body{padding:32px}
  .section{margin-top:44px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .article-title{font-size:26px}
  .article-body{padding:24px;border-radius:18px}
  .article-body h2{font-size:21px;margin:26px 0 12px}
  .article-body h3{font-size:18px}
  .related-grid{grid-template-columns:1fr}
  .prevnext{grid-template-columns:1fr}
  .section__head{flex-direction:column;align-items:flex-start}
  .section__head h2{font-size:22px}
  .cta-strip{padding:24px}
  .cta-strip h2{font-size:19px}
  .footer{margin-top:56px;padding-top:44px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important}
  .post-card:hover,.prevnext a:hover,.btn:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --brand-900:#7E1220;
  --brand-700:#A81C2C;
  --brand-500:#D22B3F;
  --brand-300:#F0808C;
  --brand-grad:linear-gradient(135deg,#A81C2C 0%,#D22B3F 55%,#F0603F 100%);
  --ink-900:#14161C;
  --ink-700:#2A2E38;
  --ink-500:#5A6070;
  --ink-300:#9AA0AE;
  --bg-100:#F7F4EE;
  --bg-200:#EFEAE1;
  --surface:#FFFFFF;
  --accent:#C8F14A;
  --grass:#1F7A5A;
  --warn:#C9761B;
  --error:#C0392B;
  --line:rgba(20,22,28,.07);
  --line-2:rgba(20,22,28,.12);
  --r-lg:22px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(20,22,28,.05);
  --sh-2:0 12px 28px -12px rgba(20,22,28,.14);
  --sh-3:0 22px 44px -18px rgba(168,28,44,.28);
  --t:.22s cubic-bezier(.2,.7,.3,1);
  --nav-w:248px;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --num:"DIN Alternate","Bebas Neue",var(--sans);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--bg-100);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--brand-700);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--brand-500);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3;}
p{margin:0 0 1em;color:var(--ink-700);}
p:last-child{margin-bottom:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 28px;}

/* ============ 左侧竖向导航 ============ */
.site-header .side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--nav-w);
  display:flex;
  flex-direction:column;
  padding:26px 18px 22px;
  background:linear-gradient(180deg,#14161C 0%,#221722 62%,#3A0D16 100%);
  z-index:60;
  overflow-y:auto;
}
.site-header .brand{
  display:flex;
  align-items:center;
  gap:12px;
  color:#fff;
}
.site-header .brand:hover{color:#fff;}
.brand__mark{
  width:40px;height:40px;flex:0 0 40px;
  border-radius:12px;
  background:var(--brand-grad);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 20px -10px rgba(210,43,63,.8);
}
.brand__mark svg{width:22px;height:22px;}
.brand__text{display:block;font-size:17px;font-weight:700;letter-spacing:.2px;line-height:1.25;}
.brand__sub{display:block;font-size:10px;letter-spacing:2.4px;color:rgba(255,255,255,.5);font-family:var(--num);}
.side-nav__sep{height:1px;margin:22px 0 18px;background:linear-gradient(90deg,rgba(255,255,255,.22),rgba(255,255,255,0));}
.nav-label{margin:0 0 10px;padding-left:12px;font-size:11px;letter-spacing:2px;color:rgba(255,255,255,.42);text-transform:uppercase;}
.nav-list{display:flex;flex-direction:column;gap:6px;}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:10px;
  min-height:44px;padding:10px 12px;
  border-radius:10px;
  color:rgba(255,255,255,.76);
  font-size:14.5px;
  transition:background var(--t),color var(--t),transform var(--t);
}
.nav-item i{width:18px;font-size:15px;text-align:center;color:rgba(255,255,255,.6);transition:color var(--t);}
.nav-item:hover{background:rgba(255,255,255,.08);color:#fff;transform:translateX(2px);}
.nav-item:hover i{color:#fff;}
.nav-item.is-active{
  background:rgba(210,43,63,.2);
  color:#fff;
  font-weight:600;
}
.nav-item.is-active i{color:var(--accent);}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:3px;background:var(--brand-grad);
}
.side-tip{
  margin:22px 0 0;
  padding:16px;
  border-radius:var(--r-md);
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.08);
}
.side-tip h4{font-size:14px;color:#fff;margin-bottom:6px;}
.side-tip p{font-size:12.5px;line-height:1.7;color:rgba(255,255,255,.62);margin-bottom:10px;}
.side-tip a{font-size:12.5px;color:var(--accent);display:inline-flex;align-items:center;gap:6px;}
.side-tip a:hover{color:#fff;}
.side-nav__foot{margin-top:auto;padding-top:20px;display:flex;flex-direction:column;gap:10px;}
.side-nav__foot .btn{width:100%;justify-content:center;}
.mobile-bar{display:none;}

/* ============ 按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;
  border-radius:var(--r-sm);
  font-size:15px;font-weight:600;
  white-space:nowrap;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
}
.btn--primary{background:var(--brand-grad);color:#fff;box-shadow:var(--sh-2);}
.btn--primary:hover{color:#fff;filter:brightness(1.06);transform:translateY(-2px);box-shadow:var(--sh-3);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{background:#fff;color:var(--brand-700);border:1.5px solid var(--brand-500);}
.btn--ghost:hover{background:rgba(210,43,63,.08);color:var(--brand-700);transform:translateY(-2px);}
.btn--plain{background:transparent;color:var(--ink-500);border:1px solid var(--line-2);}
.btn--plain:hover{color:var(--ink-900);border-color:var(--ink-300);background:#fff;}
.btn--sm{height:36px;padding:0 16px;font-size:13.5px;}
.btn--lg{height:52px;}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  height:32px;padding:0 14px;
  border-radius:var(--r-pill);
  background:var(--bg-200);
  color:var(--ink-700);
  font-size:12.5px;font-weight:600;
  white-space:nowrap;
}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--grass);flex:0 0 8px;}
.badge--accent{background:var(--accent);color:#1F2A12;}
.badge--accent .dot{background:#2F4A18;}
.badge--ink{background:rgba(20,22,28,.9);color:#fff;}
.badge--ink .dot{background:var(--accent);}
.badge--line{background:#fff;border:1px solid var(--line-2);color:var(--ink-500);}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;}

/* ============ 页面外壳 ============ */
.page-shell{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column;}
.page-main{flex:1 1 auto;}

/* ============ 分类 Hero ============ */
.cat-hero{position:relative;overflow:hidden;background:var(--bg-200);padding:38px 0 40px;}
.cat-hero::before{content:"";position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--brand-grad);}
.cat-hero__bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-3.webp);
  background-size:cover;background-position:center;
  opacity:.14;
}
.cat-hero__inner{position:relative;z-index:2;}
.breadcrumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);margin-bottom:16px;flex-wrap:wrap;}
.breadcrumbs a{color:var(--ink-500);}
.breadcrumbs a:hover{color:var(--brand-700);}
.breadcrumbs .is-current{color:var(--ink-900);font-weight:600;}
.cat-hero h1{font-size:36px;font-weight:800;letter-spacing:-.5px;line-height:1.2;max-width:16em;}
.cat-hero__lead{margin:14px 0 18px;font-size:16px;color:var(--ink-500);max-width:46em;}

/* ============ 通用板块 ============ */
.section{padding:64px 0;}
.section--tight{padding:48px 0;}
.section--warm{background:var(--bg-200);}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head h2{font-size:28px;font-weight:700;margin-bottom:10px;}
.section-head p{color:var(--ink-500);font-size:15px;}

/* ============ 入口卡（不等高） ============ */
.entry-grid{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:20px;
}
.entry-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  padding:22px;
  display:flex;flex-direction:column;gap:12px;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(210,43,63,.24);}
.entry-card--lg{grid-column:span 3;}
.entry-card--sm{grid-column:span 3;}
.entry-card h3{font-size:19px;font-weight:600;}
.entry-card p{font-size:14.5px;color:var(--ink-500);}
.entry-card .media{
  position:relative;
  width:100%;
  aspect-ratio:16/10;
  border-radius:var(--r-sm);
  overflow:hidden;
  background:var(--bg-200);
}
.entry-card .media img{width:100%;height:100%;object-fit:cover;transition:transform var(--t);}
.entry-card:hover .media img{transform:scale(1.04);}
.entry-card--sm{padding:20px;background:linear-gradient(180deg,#FFFFFF 0%,#FDFAF6 100%);}
.entry-card--sm .entry-card__num{
  font-family:var(--num);font-size:13px;font-weight:700;letter-spacing:2px;color:var(--brand-500);
}
.link-more{display:inline-flex;align-items:center;gap:8px;margin-top:auto;font-size:14px;font-weight:600;color:var(--brand-700);}
.link-more i{transition:transform var(--t);}
.link-more:hover i{transform:translateX(4px);}

/* ============ 图文交替 ============ */
.feature-row{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:44px;
  align-items:center;
}
.feature-row--rev{grid-template-columns:7fr 5fr;}
.feature-row--rev .feature-media{order:2;}
.feature-media{
  position:relative;
  aspect-ratio:16/10;
  border-radius:var(--r-md);
  overflow:hidden;
  background:var(--bg-200);
  border:1px solid var(--line);
  box-shadow:var(--sh-2);
}
.feature-media img{width:100%;height:100%;object-fit:cover;}
.feature-body h2{font-size:28px;margin-bottom:14px;}
.feature-body > p{color:var(--ink-500);font-size:15.5px;max-width:36em;}
.check-list{margin-top:18px;display:flex;flex-direction:column;gap:14px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--ink-700);}
.check-list i{
  flex:0 0 22px;width:22px;height:22px;margin-top:3px;
  border-radius:8px;background:rgba(31,122,90,.12);color:var(--grass);
  display:flex;align-items:center;justify-content:center;font-size:12px;
}
.check-list strong{color:var(--ink-900);font-weight:600;}

/* ============ 双列清单 ============ */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:26px;
  box-shadow:var(--sh-1);
}
.panel--grad{background:var(--brand-grad);border-color:transparent;color:#fff;}
.panel--grad h3,.panel--grad p,.panel--grad li{color:#fff;}
.panel h3{font-size:19px;margin-bottom:12px;}
.panel p{font-size:14.5px;color:var(--ink-500);}
.plain-list{display:flex;flex-direction:column;gap:12px;margin-top:8px;}
.plain-list li{
  display:flex;gap:12px;font-size:14.5px;color:var(--ink-700);
  padding-bottom:12px;border-bottom:1px dashed var(--line-2);
}
.plain-list li:last-child{border-bottom:0;padding-bottom:0;}
.plain-list .idx{
  font-family:var(--num);font-size:14px;font-weight:700;color:var(--brand-500);flex:0 0 28px;
}
.panel--grad .plain-list li{border-color:rgba(255,255,255,.25);}
.panel--grad .idx{color:var(--accent);}
.panel__data{display:flex;gap:24px;margin-top:20px;flex-wrap:wrap;}
.panel__data div span{display:block;font-size:12.5px;color:rgba(255,255,255,.75);}
.panel__data div strong{font-family:var(--num);font-size:32px;font-weight:800;color:#fff;line-height:1.1;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;}
.accordion.faq-list{background:transparent;border:0;margin:0;}
.faq-list .accordion-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  margin-bottom:12px;
  overflow:hidden;
  transition:box-shadow var(--t),border-color var(--t);
}
.faq-list .accordion-item:hover{box-shadow:var(--sh-2);}
.faq-list .accordion-item.is-active{border-color:rgba(210,43,63,.24);}
.faq-list .accordion-title{
  display:block;
  position:relative;
  padding:20px 60px 20px 24px;
  font-size:16px;font-weight:600;color:var(--ink-900);
  border:0;
  transition:color var(--t);
}
.faq-list .accordion-title:hover{color:var(--brand-700);}
.faq-list .accordion-title::before{
  content:"+";
  position:absolute;right:24px;top:50%;transform:translateY(-50%);
  font-family:var(--num);font-size:22px;line-height:1;color:var(--brand-500);
  transition:transform var(--t),color var(--t);
}
.faq-list .accordion-item.is-active .accordion-title::before{content:"−";transform:translateY(-50%) rotate(0deg);}
.faq-list .accordion-item.is-active::after{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;background:var(--brand-grad);
}
.faq-list .accordion-item{position:relative;}
.faq-list .accordion-content{
  display:none;
  padding:0 24px 22px;
  border:0;
  background:transparent;
  color:var(--ink-500);
  font-size:14.8px;
  line-height:1.8;
}
.faq-list .accordion-item.is-active .accordion-content{display:block;}

/* ============ CTA ============ */
.cta-card{
  background:var(--bg-100);
  border:1.5px solid rgba(210,43,63,.35);
  border-radius:var(--r-lg);
  padding:38px;
  display:grid;grid-template-columns:5fr 7fr;gap:40px;
  align-items:center;
  box-shadow:var(--sh-2);
}
.cta-card h2{font-size:28px;margin-bottom:12px;}
.cta-card p{color:var(--ink-500);font-size:15px;}
.cta-form{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:13px;font-weight:600;color:var(--ink-700);}
.field input,.field select{
  height:48px;padding:0 14px;
  border-radius:var(--r-sm);
  border:1px solid var(--line-2);
  background:var(--bg-100);
  color:var(--ink-900);
  transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.field input:focus,.field select:focus{
  outline:0;background:#fff;
  border-color:var(--brand-500);
  box-shadow:0 0 0 4px rgba(210,43,63,.14);
}
.cta-form .field--full{grid-column:1 / -1;}
.cta-form .btn{grid-column:1 / -1;width:100%;}
.form-note{grid-column:1 / -1;font-size:12px;color:var(--ink-300);}

/* ============ 页脚 ============ */
.footer{
  margin-top:64px;
  background:var(--ink-900);
  color:rgba(255,255,255,.7);
  padding-top:1px;
  border-top:1px solid rgba(255,255,255,.06);
}
.footer::before{content:"";display:block;height:1px;background:var(--brand-grad);}
.footer__main{padding:52px 28px 36px;}
.footer h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.5px;}
.footer .brand{display:flex;align-items:center;gap:12px;color:#fff;margin-bottom:14px;}
.footer .brand:hover{color:#fff;}
.footer .brand__sub{color:rgba(255,255,255,.45);}
.footer__desc{font-size:13.5px;line-height:1.75;color:rgba(255,255,255,.6);margin-bottom:16px;max-width:22em;}
.footer__badges{display:flex;gap:10px;flex-wrap:wrap;}
.footer__badges .badge{background:rgba(255,255,255,.08);color:rgba(255,255,255,.8);height:28px;font-size:12px;}
.footer__links{display:flex;flex-direction:column;gap:10px;}
.footer__links a{font-size:14px;color:rgba(255,255,255,.66);}
.footer__links a:hover{color:#fff;}
.footer__contact{display:flex;flex-direction:column;gap:12px;}
.footer__contact li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.66);align-items:flex-start;}
.footer__contact i{margin-top:4px;color:var(--brand-300);}
.footer__bottom{
  display:flex;gap:14px;flex-wrap:wrap;align-items:center;justify-content:space-between;
  padding:18px 28px 26px;
  border-top:1px solid rgba(255,255,255,.08);
  font-size:12.5px;color:rgba(255,255,255,.45);
}
.footer__bottom p{margin:0;color:rgba(255,255,255,.45);}
.footer__meta{font-size:12.5px;}

/* ============ 装饰 ============ */
.stripes{
  position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(105deg,rgba(20,22,28,.05) 0 1px,transparent 1px 18px);
  opacity:.5;
}
.section{position:relative;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 22px;}
  .cat-hero h1{font-size:32px;}
}
@media (max-width:1023px){
  .site-header .side-nav{
    transform:translateX(-100%);
    transition:transform var(--t);
    width:280px;
    box-shadow:0 20px 50px rgba(0,0,0,.4);
  }
  .site-header .side-nav.is-open{transform:translateX(0);}
  .page-shell{margin-left:0;}
  .mobile-bar{
    display:flex;align-items:center;justify-content:space-between;
    position:sticky;top:0;z-index:70;
    height:56px;padding:0 18px;
    background:var(--bg-100);
    border-bottom:1px solid var(--line-2);
  }
  .mobile-bar .brand .brand__text{color:var(--ink-900);font-size:15px;}
  .mobile-bar .brand .brand__mark{width:32px;height:32px;flex:0 0 32px;border-radius:10px;}
  .burger{
    position:relative;width:40px;height:40px;border-radius:10px;background:#fff;border:1px solid var(--line-2);
  }
  .burger span{
    position:absolute;left:11px;right:11px;height:2px;border-radius:2px;background:var(--ink-900);
    transition:transform var(--t),opacity var(--t);
  }
  .burger span:nth-child(1){top:16px;}
  .burger span:nth-child(2){top:22px;}
  .burger.is-open span:nth-child(1){transform:translateY(3px) rotate(45deg);}
  .burger.is-open span:nth-child(2){transform:translateY(-3px) rotate(-45deg);}
  .entry-card--lg,.entry-card--sm{grid-column:span 3;}
  .feature-row,.feature-row--rev{grid-template-columns:1fr;gap:26px;}
  .feature-row--rev .feature-media{order:0;}
  .cta-card{grid-template-columns:1fr;gap:26px;padding:28px;}
  .section{padding:48px 0;}
  .cat-hero h1{font-size:28px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .entry-card--lg,.entry-card--sm{grid-column:span 6;}
  .two-col{grid-template-columns:1fr;}
  .cta-form{grid-template-columns:1fr;}
  .section{padding:40px 0;}
  .cat-hero{padding:26px 0 30px;}
  .cat-hero h1{font-size:26px;}
  .section-head h2,.cta-card h2,.feature-body h2{font-size:22px;}
  .footer__bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
/* ===================== 设计变量 ===================== */
:root{
  --brand-900:#7E1220;
  --brand-700:#A81C2C;
  --brand-500:#D22B3F;
  --brand-300:#F0808C;
  --brand-grad:linear-gradient(135deg,#A81C2C 0%,#D22B3F 55%,#F0603F 100%);
  --ink-900:#14161C;
  --ink-700:#2A2E38;
  --ink-500:#5A6070;
  --ink-300:#9AA0AE;
  --bg-100:#F7F4EE;
  --bg-200:#EFEAE1;
  --surface:#FFFFFF;
  --accent:#C8F14A;
  --grass:#1F7A5A;
  --warn:#C9761B;
  --danger:#C0392B;
  --line:rgba(20,22,28,.07);
  --line-strong:rgba(20,22,28,.13);
  --radius-lg:22px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-1:0 2px 8px rgba(20,22,28,.05);
  --shadow-2:0 12px 28px -12px rgba(20,22,28,.14);
  --shadow-3:0 22px 44px -18px rgba(168,28,44,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-w:248px;
}

/* ===================== 基础重置 ===================== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--bg-100);
  font-weight:400;
}
h1,h2,h3,h4,h5{margin:0;color:var(--ink-900);font-family:inherit}
p{margin:0 0 1em;padding:0}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),opacity .22s var(--ease)}
a:hover{color:var(--brand-700)}
button{font-family:inherit}
::selection{background:rgba(210,43,63,.18)}

/* ===================== 容器与主体 ===================== */
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 28px;
}
.site-main{
  margin-left:var(--nav-w);
  min-height:100vh;
  background:var(--bg-100);
  padding-bottom:0;
}
.section{padding:0 0 96px}
.section--tight{padding-bottom:64px}

/* ===================== 左侧竖向导航 ===================== */
.site-header{position:relative;z-index:40}
.side-nav{
  position:fixed;
  left:0;
  top:0;
  bottom:0;
  width:var(--nav-w);
  padding:26px 18px 22px;
  display:flex;
  flex-direction:column;
  background:linear-gradient(170deg,#14161C 0%,#241A20 52%,#7E1220 100%);
  overflow-y:auto;
  scrollbar-width:thin;
  box-shadow:12px 0 30px -22px rgba(20,22,28,.6);
}
.side-nav::-webkit-scrollbar{width:6px}
.side-nav::-webkit-scrollbar-thumb{background:rgba(255,255,255,.16);border-radius:3px}

.brand{
  display:flex;
  align-items:center;
  gap:12px;
  min-width:0;
}
.brand__mark{
  flex:0 0 40px;
  width:40px;
  height:40px;
  border-radius:12px;
  background:var(--brand-grad);
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 8px 18px -10px rgba(210,43,63,.9);
}
.brand__mark svg{width:22px;height:22px}
.brand__text{
  display:block;
  font-size:17px;
  font-weight:700;
  letter-spacing:-.2px;
  color:#FFFFFF;
  line-height:1.2;
  white-space:nowrap;
}
.brand__sub{
  display:block;
  font-size:9.5px;
  letter-spacing:2px;
  color:rgba(255,255,255,.42);
  margin-top:3px;
  font-family:"DIN Alternate","Bebas Neue",system-ui,sans-serif;
}
.side-nav__sep{
  height:1px;
  margin:22px 0 18px;
  background:linear-gradient(90deg,rgba(255,255,255,.22),rgba(255,255,255,0));
}
.nav-label{
  font-size:11px;
  letter-spacing:2px;
  color:rgba(255,255,255,.36);
  margin:0 0 10px 12px;
}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  height:44px;
  padding:0 12px;
  border-radius:10px;
  font-size:14.5px;
  color:rgba(255,255,255,.72);
  overflow:hidden;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.nav-item i{width:18px;font-size:15px;text-align:center;color:rgba(255,255,255,.5);transition:color .22s var(--ease)}
.nav-item:hover{background:rgba(255,255,255,.07);color:#fff}
.nav-item:hover i{color:#fff}
.nav-item.is-active{
  background:rgba(255,255,255,.12);
  color:#fff;
  font-weight:600;
}
.nav-item.is-active i{color:var(--accent)}
.nav-item.is-active::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  bottom:9px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--brand-grad);
}
.side-tip{
  margin-top:26px;
  padding:16px;
  border-radius:14px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.08);
}
.side-tip h4{
  color:#fff;
  font-size:13.5px;
  font-weight:700;
  margin:0 0 8px;
}
.side-tip p{
  font-size:12.5px;
  line-height:1.7;
  color:rgba(255,255,255,.6);
  margin:0 0 10px;
}
.side-tip a{
  font-size:12.5px;
  color:var(--accent);
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.side-tip a:hover{color:#fff}
.side-nav__foot{margin-top:auto;padding-top:24px}
.side-nav__foot .btn{width:100%}

/* ===================== 移动端顶栏 ===================== */
.mobile-bar{
  display:none;
  position:sticky;
  top:0;
  z-index:50;
  height:56px;
  padding:0 18px;
  align-items:center;
  justify-content:space-between;
  background:var(--bg-100);
  border-bottom:1px solid var(--line);
}
.mobile-bar .brand__text{font-size:15.5px;color:var(--ink-900)}
.mobile-bar .brand__mark{flex:0 0 34px;width:34px;height:34px;border-radius:10px}
.mobile-bar .brand__mark svg{width:19px;height:19px}
.burger{
  width:44px;
  height:44px;
  border:0;
  background:transparent;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:7px;
  cursor:pointer;
}
.burger span{
  display:block;
  width:22px;
  height:2px;
  border-radius:2px;
  background:var(--ink-900);
  transition:transform .22s var(--ease);
}
.burger.is-open span:first-child{transform:translateY(4.5px) rotate(45deg)}
.burger.is-open span:last-child{transform:translateY(-4.5px) rotate(-45deg)}
.nav-mask{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(20,22,28,.45);
  z-index:55;
  opacity:0;
  transition:opacity .22s var(--ease);
}
.nav-mask.is-open{display:block;opacity:1}

/* ===================== 按钮体系 ===================== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border:0;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),filter .22s var(--ease);
}
.btn--primary{
  background-image:var(--brand-grad);
  background-size:170% 170%;
  background-position:0 0;
  color:#fff;
  box-shadow:var(--shadow-2);
}
.btn--primary:hover{
  background-position:100% 100%;
  filter:brightness(1.06);
  color:#fff;
  transform:translateY(-2px);
  box-shadow:var(--shadow-3);
}
.btn--primary:active{transform:translateY(1px)}
.btn--outline{
  background:#fff;
  color:var(--brand-700);
  border:1.5px solid var(--brand-500);
}
.btn--outline:hover{background:rgba(210,43,63,.08);color:var(--brand-700);transform:translateY(-2px)}
.btn--outline:active{transform:translateY(1px)}
.btn--ghost{
  background:transparent;
  color:rgba(20,22,28,.6);
  padding:0 14px;
}
.btn--ghost:hover{color:var(--brand-700);background:rgba(20,22,28,.04)}
.btn--sm{height:36px;padding:0 16px;font-size:13.5px;border-radius:10px}
.btn--lg{height:52px;padding:0 30px}
.btn--block{width:100%}
.btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,button:focus-visible,.accordion-title:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-700);
}
.text-link i{transition:transform .22s var(--ease)}
.text-link:hover{color:var(--brand-900)}
.text-link:hover i{transform:translateX(4px)}

/* ===================== 徽章 / 标签 ===================== */
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:32px;
  padding:0 14px;
  border-radius:999px;
  background:rgba(20,22,28,.06);
  color:var(--ink-700);
  font-size:13px;
  font-weight:500;
  white-space:nowrap;
}
.badge .dot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 3px rgba(200,241,74,.25);
}
.badge--dark{background:rgba(255,255,255,.14);color:#fff}
.badge-row{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}
.tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  background:rgba(210,43,63,.09);
  color:var(--brand-700);
  font-size:12.5px;
  font-weight:600;
  white-space:nowrap;
}
.tag--ink{background:rgba(20,22,28,.06);color:var(--ink-500)}

/* ===================== 分类 Hero 条 ===================== */
.cat-hero{
  position:relative;
  overflow:hidden;
  background:var(--bg-200);
  padding:34px 0 42px;
  margin-bottom:56px;
}
.cat-hero__bg{
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  opacity:.14;
  pointer-events:none;
}
.cat-hero::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:6px;
  background:var(--brand-grad);
  z-index:2;
}
.cat-hero .container{position:relative;z-index:3}
.cat-hero h1{
  font-size:36px;
  line-height:1.25;
  font-weight:800;
  letter-spacing:-.5px;
  margin:0 0 14px;
  max-width:16em;
}
.cat-hero__lead{
  font-size:16px;
  color:var(--ink-500);
  max-width:640px;
  margin:0 0 20px;
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--ink-500);
  margin-bottom:16px;
}
.breadcrumb a{color:var(--ink-500)}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb .sep{color:var(--ink-300)}
.breadcrumb .current{color:var(--ink-900);font-weight:600}

/* ===================== 板块标题 ===================== */
.section-head{margin-bottom:32px}
.section-head h2{
  font-size:28px;
  line-height:1.3;
  font-weight:700;
  margin:0 0 10px;
}
.section-head p{
  color:var(--ink-500);
  max-width:760px;
  margin:0;
}
.section-head--row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
}

/* ===================== 卡片 ===================== */
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3)}
.card--accent{position:relative;overflow:hidden}
.card--accent::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:4px;
  background:var(--brand-grad);
}
.card__body{padding:24px}
.card__body h3{font-size:19px;line-height:1.4;font-weight:600;margin:0 0 10px}
.card__body p{font-size:15px;color:var(--ink-500);line-height:1.75}

/* 速览小卡 */
.quick{
  padding:22px;
  height:100%;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.quick__icon{
  width:42px;
  height:42px;
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(210,43,63,.09);
  color:var(--brand-700);
  font-size:17px;
}
.quick h3{font-size:16.5px;font-weight:600;margin:0}
.quick p{font-size:14px;color:var(--ink-500);margin:0;line-height:1.7}

/* 媒体图 */
.media{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-sm);
  aspect-ratio:16/10;
  background:var(--bg-200);
}
.media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .28s var(--ease);
}

/* ===================== 流程卡 + 清单 ===================== */
.flow-list{display:flex;flex-direction:column;gap:16px}
.flow-card{
  position:relative;
  display:flex;
  gap:18px;
  padding:24px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.flow-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3)}
.flow-card__num{
  flex:0 0 auto;
  font-family:"DIN Alternate","Bebas Neue",system-ui,sans-serif;
  font-size:34px;
  font-weight:800;
  line-height:1;
  letter-spacing:-1px;
  color:var(--brand-500);
  background:linear-gradient(135deg,#A81C2C,#F0603F);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}
.flow-card h3{font-size:19px;font-weight:600;margin:0 0 8px}
.flow-card p{font-size:14.5px;color:var(--ink-500);line-height:1.75;margin:0 0 10px}
.flow-card__meta{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  align-items:center;
  font-size:12.5px;
  color:var(--ink-300);
}

.checklist{
  position:relative;
  overflow:hidden;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:28px 26px;
  box-shadow:var(--shadow-1);
}
.checklist::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:4px;
  background:var(--brand-grad);
}
.checklist h3{font-size:19px;font-weight:600;margin:0 0 6px}
.checklist > p{font-size:13.5px;color:var(--ink-500);margin:0 0 18px}
.checklist ul{display:flex;flex-direction:column;gap:14px}
.checklist li{
  display:flex;
  gap:11px;
  font-size:14.5px;
  line-height:1.7;
  color:var(--ink-700);
}
.checklist li i{
  color:var(--grass);
  font-size:16px;
  margin-top:4px;
  flex:0 0 auto;
}
.checklist__note{
  margin-top:20px;
  padding:14px 16px;
  border-radius:12px;
  background:var(--bg-100);
  border-left:3px solid var(--brand-500);
  font-size:13.5px;
  color:var(--ink-500);
  line-height:1.7;
}

/* ===================== 提示条目 ===================== */
.tip-list{display:flex;flex-direction:column;gap:14px}
.tip-item{
  display:flex;
  gap:16px;
  padding:20px 22px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.tip-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(210,43,63,.22)}
.tip-item__mark{
  flex:0 0 38px;
  width:38px;
  height:38px;
  border-radius:11px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--bg-100);
  color:var(--ink-700);
  font-size:15px;
}
.tip-item h3{font-size:16.5px;font-weight:600;margin:0 0 6px}
.tip-item p{font-size:14.5px;color:var(--ink-500);margin:0;line-height:1.75}
.tip-item__foot{
  margin-top:10px;
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}

/* ===================== 图文交替区 ===================== */
.split{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:40px;
  align-items:center;
}
.split--reverse{grid-template-columns:7fr 5fr}
.split__media{
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-2);
  aspect-ratio:16/10;
  background:var(--bg-200);
}
.split__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.split__media:hover img{transform:scale(1.04)}
.split h2{font-size:26px;line-height:1.35;font-weight:700;margin:0 0 14px}
.split p{font-size:15.5px;color:var(--ink-500);margin:0 0 16px}
.mini-list{display:flex;flex-direction:column;gap:10px;margin:0 0 20px}
.mini-list li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14.5px;
  color:var(--ink-700);
}
.mini-list li i{color:var(--brand-500);font-size:13px;margin-top:6px}

/* ===================== FAQ 手风琴 ===================== */
.accordion{
  background:transparent;
  border:0;
  margin:0;
}
.accordion .accordion-item{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line)!important;
  border-radius:var(--radius-md)!important;
  margin-bottom:12px;
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.accordion .accordion-item.is-active{
  box-shadow:var(--shadow-2);
  border-color:rgba(210,43,63,.2)!important;
}
.accordion .accordion-title{
  display:block;
  padding:19px 54px 19px 22px;
  font-size:16px;
  font-weight:600;
  color:var(--ink-900);
  border:0;
  background:transparent;
  line-height:1.5;
  transition:color .22s var(--ease),box-shadow .22s var(--ease);
}
.accordion .accordion-title::before{
  content:"+";
  position:absolute;
  right:20px;
  top:18px;
  width:24px;
  height:24px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:17px;
  font-weight:600;
  color:var(--brand-700);
  background:rgba(210,43,63,.09);
  border-radius:8px;
  transform:none;
  transition:transform .22s var(--ease),background .22s var(--ease),color .22s var(--ease);
}
.accordion .accordion-item.is-active .accordion-title{
  color:var(--brand-700);
  box-shadow:inset 3px 0 0 var(--brand-500);
}
.accordion .accordion-item.is-active .accordion-title::before{
  content:"−";
  transform:rotate(90deg);
  background:var(--brand-grad);
  color:#fff;
}
.accordion .accordion-content{
  border:0;
  padding:0 22px 20px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-500);
  background:transparent;
}
.accordion .accordion-content p{margin:0}

/* ===================== CTA 区 ===================== */
.cta-wrap{padding-bottom:96px}
.cta-card{
  position:relative;
  overflow:hidden;
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:40px;
  padding:42px;
  border-radius:var(--radius-lg);
  background:var(--surface);
  border:1px solid rgba(210,43,63,.24);
  box-shadow:var(--shadow-2);
}
.cta-card::after{
  content:"";
  position:absolute;
  right:-90px;
  top:-90px;
  width:260px;
  height:260px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(210,43,63,.14),rgba(210,43,63,0) 70%);
  pointer-events:none;
}
.cta-card h2{font-size:27px;line-height:1.35;font-weight:800;margin:0 0 12px}
.cta-card > .cta-left p{font-size:15px;color:var(--ink-500);margin:0 0 20px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin:0}
.field--full{grid-column:1 / -1}
.field label{
  display:block;
  font-size:13px;
  font-weight:600;
  color:var(--ink-700);
  margin-bottom:8px;
}
.field input,
.field select{
  width:100%;
  height:48px;
  padding:0 14px;
  font-size:15px;
  color:var(--ink-900);
  background:var(--bg-100);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-sm);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
  appearance:none;
}
.field select{
  background-image:linear-gradient(45deg,transparent 50%,var(--ink-500) 50%),linear-gradient(135deg,var(--ink-500) 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;
  background-size:6px 6px,6px 6px;
  background-repeat:no-repeat;
}
.field input::placeholder{color:var(--ink-300)}
.field input:focus,
.field select:focus{
  outline:none;
  background:var(--surface);
  border-color:var(--brand-500);
  box-shadow:0 0 0 4px rgba(210,43,63,.12);
}
.form-hint{
  grid-column:1 / -1;
  font-size:12px;
  color:var(--ink-500);
  line-height:1.7;
  margin:2px 0 0;
}
.form-error{
  grid-column:1 / -1;
  font-size:13px;
  color:var(--danger);
}

/* ===================== 页脚 ===================== */
.footer{
  position:relative;
  background:var(--ink-900);
  color:rgba(255,255,255,.7);
  margin-top:0;
}
.footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:2px;
  background:var(--brand-grad);
}
.footer__main{padding:64px 0 44px}
.footer h4{
  color:#fff;
  font-size:15px;
  font-weight:700;
  margin:0 0 18px;
}
.footer .brand__text{color:#fff}
.footer .brand__sub{color:rgba(255,255,255,.4)}
.footer__desc{
  font-size:13.5px;
  line-height:1.8;
  color:rgba(255,255,255,.6);
  margin:16px 0 18px;
}
.footer__badges{display:flex;gap:8px;flex-wrap:wrap}
.footer__badges .badge{
  background:rgba(255,255,255,.1);
  color:rgba(255,255,255,.86);
}
.footer__links{display:flex;flex-direction:column;gap:11px}
.footer__links a{
  font-size:14px;
  color:rgba(255,255,255,.66);
}
.footer__links a:hover{color:#fff;padding-left:3px}
.footer__contact{display:flex;flex-direction:column;gap:12px}
.footer__contact li{
  display:flex;
  gap:10px;
  font-size:14px;
  color:rgba(255,255,255,.66);
  line-height:1.6;
}
.footer__contact i{color:var(--brand-300);margin-top:4px}
.footer__bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 26px;
  font-size:13px;
  color:rgba(255,255,255,.5);
}
.footer__bottom .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
}
.footer__bottom span{line-height:1.7}

/* ===================== 响应式 ===================== */
@media screen and (max-width:1279px){
  .container{padding:0 22px}
  .split,.split--reverse{grid-template-columns:1fr 1fr;gap:28px}
  .cta-card{grid-template-columns:1fr;gap:28px;padding:34px}
}
@media screen and (max-width:1023px){
  .mobile-bar{display:flex}
  .side-nav{
    width:280px;
    transform:translateX(-100%);
    transition:transform .28s var(--ease);
    z-index:60;
    padding-top:22px;
  }
  .side-nav.is-open{transform:translateX(0)}
  .site-main{margin-left:0}
  .cat-hero{margin-bottom:40px;padding:26px 0 32px}
  .cat-hero h1{font-size:28px}
  .cat-hero__lead{font-size:15px}
  .section{padding-bottom:72px}
  .cta-wrap{padding-bottom:72px}
  .split,.split--reverse{grid-template-columns:1fr;gap:24px}
  .split--reverse .split__media{order:-1}
  .section-head h2{font-size:24px}
  .flow-card__num{font-size:29px}
  .footer__main{padding:48px 0 32px}
}
@media screen and (max-width:767px){
  .container{padding:0 18px}
  .cat-hero h1{font-size:25px}
  .section{padding-bottom:56px}
  .section-head{margin-bottom:24px}
  .section-head h2{font-size:22px}
  .cta-wrap{padding-bottom:56px}
  .cta-card{padding:24px}
  .cta-card h2{font-size:22px}
  .form-grid{grid-template-columns:1fr}
  .card__body{padding:20px}
  .flow-card{flex-direction:column;gap:12px;padding:20px}
  .tip-item{flex-direction:column;gap:12px}
  .checklist{padding:22px 18px}
  .badge-row{gap:8px}
  .footer__bottom .container{flex-direction:column;align-items:flex-start;gap:8px}
}
@media screen and (max-width:520px){
  .badge{height:30px;font-size:12.5px}
  .btn{padding:0 18px}
  .btn--lg{height:48px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    transition:none!important;
    animation:none!important;
  }
  .card:hover,.flow-card:hover,.tip-item:hover,.btn:hover{transform:none}
}

/* roulang page: category3 */
/* ===== 设计变量 ===== */
:root{
  --brand-900:#7E1220;
  --brand-700:#A81C2C;
  --brand-500:#D22B3F;
  --brand-300:#F0808C;
  --ink-900:#14161C;
  --ink-700:#2A2E38;
  --ink-500:#5A6070;
  --ink-300:#9AA0AE;
  --bg-100:#F7F4EE;
  --bg-200:#EFEAE1;
  --surface:#FFFFFF;
  --accent:#C8F14A;
  --grass:#1F7A5A;
  --warn:#C9761B;
  --err:#C0392B;
  --line:rgba(20,22,28,.07);
  --line-strong:rgba(20,22,28,.12);
  --grad:linear-gradient(135deg,#A81C2C 0%,#D22B3F 52%,#F0603F 100%);
  --radius-lg:22px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-1:0 2px 8px rgba(20,22,28,.05);
  --shadow-2:0 12px 28px -12px rgba(20,22,28,.14);
  --shadow-3:0 22px 44px -18px rgba(168,28,44,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-w:248px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}

/* ===== reset / base ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--bg-100);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:0;list-style:none}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease)}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:rgba(210,43,63,.18)}

/* ===== 布局 ===== */
.page-shell{
  margin-left:var(--nav-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 28px;
}
.section{padding:72px 0}
.section--tight{padding:52px 0}
.section--alt{background:var(--bg-200)}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{
  font-size:28px;
  font-weight:700;
  line-height:1.3;
  color:var(--ink-900);
  letter-spacing:-.3px;
}
.section-head p{
  margin-top:12px;
  font-size:15.5px;
  color:var(--ink-500);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--brand-700);
  text-transform:uppercase;
  margin-bottom:12px;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;border-radius:2px;background:var(--grad);
}

/* ===== 左侧竖向导航 ===== */
.site-header{position:relative;z-index:60}
.side-nav{
  position:fixed;
  left:0;top:0;bottom:0;
  width:var(--nav-w);
  display:flex;
  flex-direction:column;
  gap:18px;
  padding:26px 20px 22px;
  background:linear-gradient(180deg,#14161C 0%,#241318 52%,#7E1220 100%);
  color:#fff;
  overflow-y:auto;
  z-index:60;
  box-shadow:12px 0 32px -22px rgba(20,22,28,.6);
}
.side-nav::-webkit-scrollbar{width:6px}
.side-nav::-webkit-scrollbar-thumb{background:rgba(255,255,255,.18);border-radius:999px}
.brand{display:flex;align-items:center;gap:12px}
.brand__mark{
  width:40px;height:40px;flex:0 0 40px;
  border-radius:12px;
  background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 22px -12px rgba(210,43,63,.9);
}
.brand__mark svg{width:24px;height:24px}
.brand__text{
  display:block;
  font-size:17px;
  font-weight:700;
  color:#fff;
  letter-spacing:.2px;
  line-height:1.25;
}
.brand__sub{
  display:block;
  font-size:10.5px;
  letter-spacing:.22em;
  color:rgba(255,255,255,.45);
  margin-top:2px;
}
.side-nav__sep{
  height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.22),rgba(255,255,255,0));
}
.nav-label{
  font-size:11.5px;
  letter-spacing:.18em;
  color:rgba(255,255,255,.38);
  margin-bottom:8px;
}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  height:44px;
  padding:0 12px 0 16px;
  border-radius:10px;
  font-size:14.5px;
  color:rgba(255,255,255,.72);
  transition:background-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.nav-item i{font-size:15px;width:18px;text-align:center;opacity:.85}
.nav-item:hover{background:rgba(255,255,255,.08);color:#fff;transform:translateX(2px)}
.nav-item.is-active{
  background:rgba(255,255,255,.12);
  color:#fff;
  font-weight:600;
}
.nav-item.is-active::before{
  content:"";
  position:absolute;
  left:3px;top:9px;bottom:9px;
  width:3px;border-radius:3px;
  background:var(--grad);
}
.side-tip{
  margin-top:auto;
  padding:16px 16px 18px;
  border-radius:var(--radius-md);
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.1);
}
.side-tip h4{
  font-size:14px;
  font-weight:700;
  color:#fff;
  margin-bottom:8px;
}
.side-tip p{
  font-size:12.5px;
  line-height:1.7;
  color:rgba(255,255,255,.6);
  margin-bottom:12px;
}
.side-tip a{
  font-size:12.5px;
  font-weight:600;
  color:var(--brand-300);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.side-tip a:hover{color:#fff}
.side-nav__foot{margin-top:14px}
.side-nav__foot .btn{width:100%}

/* ===== 移动端顶栏 ===== */
.mobile-bar{
  display:none;
  position:sticky;
  top:0;
  height:56px;
  padding:0 16px;
  background:rgba(247,244,238,.96);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  align-items:center;
  justify-content:space-between;
  z-index:70;
}
.mobile-bar .brand{gap:10px}
.mobile-bar .brand__mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px}
.mobile-bar .brand__mark svg{width:20px;height:20px}
.mobile-bar .brand__text{font-size:15.5px;color:var(--ink-900)}
.burger{
  width:42px;height:42px;
  display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  gap:6px;
  border-radius:10px;
  transition:background-color .22s var(--ease);
}
.burger:hover{background:rgba(20,22,28,.06)}
.burger span{
  display:block;
  width:20px;height:2px;border-radius:2px;
  background:var(--ink-900);
  transition:transform .25s var(--ease),opacity .25s var(--ease);
}
.burger.is-open span:nth-child(1){transform:translateY(4px) rotate(45deg)}
.burger.is-open span:nth-child(2){transform:translateY(-4px) rotate(-45deg)}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  letter-spacing:.2px;
  white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease),filter .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn--primary{
  background:var(--grad);
  color:#fff;
  box-shadow:var(--shadow-2);
}
.btn--primary:hover{filter:brightness(1.06);box-shadow:var(--shadow-3);transform:translateY(-2px)}
.btn--ghost{
  background:var(--surface);
  color:var(--brand-700);
  border:1.5px solid rgba(168,28,44,.45);
}
.btn--ghost:hover{background:rgba(168,28,44,.08);border-color:var(--brand-700);transform:translateY(-2px)}
.btn--plain{
  background:transparent;
  color:var(--ink-500);
  height:40px;
  padding:0 14px;
}
.btn--plain:hover{color:var(--brand-700);background:rgba(168,28,44,.06)}
.btn--lg{height:52px;padding:0 28px;font-size:15.5px}
.btn--sm{height:36px;padding:0 16px;font-size:13.5px}

.textlink{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-700);
}
.textlink i{font-size:12px;transition:transform .22s var(--ease)}
.textlink:hover i{transform:translateX(4px)}

/* ===== 徽章 / 标签 ===== */
.badge{
  display:inline-flex;
  align-items:center;
  gap:7px;
  height:32px;
  padding:0 14px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  background:rgba(20,22,28,.06);
  color:var(--ink-700);
  white-space:nowrap;
}
.badge .dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 3px rgba(200,241,74,.28);
}
.badge--dark{background:var(--ink-900);color:#fff}
.badge--dark .dot{background:var(--accent);box-shadow:none}
.badge--brand{background:rgba(210,43,63,.1);color:var(--brand-700)}
.badge--brand .dot{background:var(--brand-500);box-shadow:0 0 0 3px rgba(210,43,63,.14)}
.badge-row{display:flex;flex-wrap:wrap;gap:10px}

/* ===== 面包屑 ===== */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-500);
  padding:22px 0 0;
}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb .sep{color:var(--ink-300)}
.breadcrumb .current{color:var(--ink-900);font-weight:600}

/* ===== 分类 Hero 条 ===== */
.cat-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:linear-gradient(135deg,#F7F4EE 0%,#EFEAE1 100%);
}
.cat-hero__bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  opacity:.16;
}
.cat-hero__inner{
  position:relative;
  z-index:2;
  min-height:240px;
  display:flex;
  align-items:center;
  gap:26px;
  padding:48px 0;
}
.cat-hero__bar{
  flex:0 0 6px;
  width:6px;
  height:76px;
  border-radius:999px;
  background:var(--grad);
}
.cat-hero h1{
  font-size:36px;
  font-weight:800;
  line-height:1.2;
  letter-spacing:-.5px;
  color:var(--ink-900);
  margin-bottom:12px;
}
.cat-hero p{
  max-width:640px;
  font-size:15.5px;
  color:var(--ink-500);
}
.cat-hero__meta{
  margin-top:18px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}

/* ===== 卡片通用 ===== */
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}

/* ===== 设备对比表 ===== */
.table-wrap{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-1);
  overflow:hidden;
}
.device-table{
  width:100%;
  border-collapse:collapse;
  font-size:15px;
}
.device-table caption{
  caption-side:top;
  text-align:left;
  padding:20px 22px 14px;
  font-size:14px;
  color:var(--ink-500);
}
.device-table thead th{
  background:#F2ECE2;
  color:var(--ink-900);
  font-size:13.5px;
  font-weight:700;
  letter-spacing:.02em;
  text-align:left;
  padding:14px 22px;
  border-bottom:1px solid var(--line-strong);
  white-space:nowrap;
}
.device-table tbody td{
  padding:16px 22px;
  border-bottom:1px solid var(--line);
  color:var(--ink-700);
  vertical-align:top;
}
.device-table tbody tr:nth-child(odd){background:#FBF8F3}
.device-table tbody tr:last-child td{border-bottom:0}
.device-table tbody tr:hover{background:#F6EDE6}
.device-table td strong{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--ink-900);
  font-weight:700;
}
.device-table td strong i{color:var(--brand-500);font-size:15px}
.table-note{
  margin-top:14px;
  font-size:13px;
  color:var(--ink-500);
  display:flex;
  align-items:flex-start;
  gap:8px;
}
.table-note i{color:var(--warn);margin-top:4px}

/* ===== 步骤卡 ===== */
.steps{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:26px;
  position:relative;
}
.step-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:28px 24px 24px;
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.step-card::after{
  content:"";
  position:absolute;
  top:52px;right:-26px;
  width:26px;
  border-top:2px dashed rgba(20,22,28,.16);
}
.step-card:last-child::after{display:none}
.step-card__num{
  font-family:"DIN Alternate","Bebas Neue",var(--font-cn);
  font-size:38px;
  font-weight:800;
  line-height:1;
  letter-spacing:.02em;
  background:var(--grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  margin-bottom:16px;
}
.step-card h3{
  font-size:19px;
  font-weight:600;
  color:var(--ink-900);
  line-height:1.4;
  margin-bottom:10px;
}
.step-card p{
  font-size:14.5px;
  color:var(--ink-500);
  line-height:1.75;
  margin-bottom:16px;
}

/* ===== 图文交替 ===== */
.media-row{align-items:center}
.media-row + .media-row{margin-top:64px}
.media-figure{
  position:relative;
  border-radius:var(--radius-md);
  overflow:hidden;
  background:var(--bg-200);
  aspect-ratio:16/10;
  box-shadow:var(--shadow-2);
}
.media-figure img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .5s var(--ease);
}
.media-row:hover .media-figure img{transform:scale(1.04)}
.media-body h2{
  font-size:26px;
  font-weight:700;
  color:var(--ink-900);
  line-height:1.32;
  margin-bottom:16px;
}
.media-body p{
  font-size:15.5px;
  color:var(--ink-500);
  line-height:1.8;
  margin-bottom:14px;
}
.check-list{display:grid;gap:12px;margin-top:20px}
.check-list li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14.5px;
  color:var(--ink-700);
}
.check-list li i{
  color:var(--grass);
  font-size:14px;
  margin-top:5px;
}

/* ===== 数据条 ===== */
.stats-band{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.stat{
  background:var(--surface);
  border:1px solid var(--line);
  border-top:4px solid transparent;
  border-image:linear-gradient(135deg,#A81C2C,#D22B3F,#F0603F) 1;
  border-radius:var(--radius-md);
  padding:22px 20px;
  box-shadow:var(--shadow-1);
}
.stat__num{
  font-family:"DIN Alternate","Bebas Neue",var(--font-cn);
  font-size:38px;
  font-weight:800;
  line-height:1.1;
  color:var(--ink-900);
  font-variant-numeric:tabular-nums;
}
.stat__num span{font-size:18px;margin-left:2px;color:var(--brand-700)}
.stat__label{
  margin-top:8px;
  font-size:13.5px;
  color:var(--ink-500);
}

/* ===== FAQ ===== */
.faq-accordion{border:0;background:transparent;margin:0}
.faq-accordion .accordion-item{
  position:relative;
  border:1px solid var(--line);
  background:var(--surface);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-1);
  margin-bottom:12px;
  overflow:hidden;
  transition:box-shadow .22s var(--ease);
}
.faq-accordion .accordion-item:hover{box-shadow:var(--shadow-2)}
.faq-accordion .accordion-title{
  display:block;
  padding:18px 58px 18px 22px;
  font-size:16.5px;
  font-weight:600;
  color:var(--ink-900);
  line-height:1.5;
  border:0;
  background:transparent;
  transition:background-color .22s var(--ease);
}
.faq-accordion .accordion-title:hover{background:#FBF1EC}
.faq-accordion .accordion-title::before{
  content:"+";
  position:absolute;
  right:22px;
  top:50%;
  transform:translateY(-50%);
  font-size:20px;
  font-weight:400;
  color:var(--brand-500);
  line-height:1;
  transition:transform .22s var(--ease);
}
.faq-accordion .accordion-item.is-active .accordion-title::before{
  transform:translateY(-50%) rotate(45deg);
}
.faq-accordion .accordion-item.is-active::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:var(--grad);
  z-index:2;
}
.faq-accordion .accordion-content{
  display:none;
  border:0;
  background:transparent;
  padding:0 24px 22px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-500);
}
.faq-accordion .accordion-content.is-active{display:block}

/* ===== CTA ===== */
.cta-band{
  background:var(--bg-100);
  padding:0 0 72px;
}
.cta-card{
  position:relative;
  overflow:hidden;
  background:var(--surface);
  border:1.5px solid rgba(168,28,44,.3);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-2);
  padding:40px;
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:40px;
  align-items:center;
}
.cta-card::after{
  content:"";
  position:absolute;
  right:-70px;top:-70px;
  width:220px;height:220px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(210,43,63,.14),rgba(210,43,63,0) 68%);
}
.cta-card h2{
  font-size:27px;
  font-weight:800;
  color:var(--ink-900);
  line-height:1.3;
  margin-bottom:12px;
  position:relative;
  z-index:2;
}
.cta-card p{
  font-size:15px;
  color:var(--ink-500);
  margin-bottom:18px;
  position:relative;
  z-index:2;
}
.cta-form{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px;
}
.field{display:flex;flex-direction:column;gap:7px}
.field--full{grid-column:1 / -1}
.field label{
  font-size:13px;
  font-weight:600;
  color:var(--ink-700);
}
.field input,
.field select{
  height:48px;
  padding:0 14px;
  border-radius:var(--radius-sm);
  border:1.5px solid var(--line-strong);
  background:var(--bg-100);
  font-size:15px;
  color:var(--ink-900);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease);
}
.field input::placeholder{color:var(--ink-300)}
.field input:focus,
.field select:focus{
  outline:none;
  background:#fff;
  border-color:var(--brand-500);
  box-shadow:0 0 0 4px rgba(210,43,63,.13);
}
.cta-form .btn{grid-column:1 / -1;width:100%}
.form-tip{
  grid-column:1 / -1;
  font-size:12px;
  color:var(--ink-500);
}

/* ===== 页脚 ===== */
.footer{
  margin-top:auto;
  background:var(--ink-900);
  color:rgba(255,255,255,.72);
  position:relative;
}
.footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:var(--grad);
}
.footer__main{padding:60px 0 44px}
.footer h4{
  font-size:14px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
  letter-spacing:.04em;
}
.footer .brand__text{color:#fff}
.footer .brand__sub{color:rgba(255,255,255,.42)}
.footer__desc{
  margin-top:16px;
  font-size:13.5px;
  line-height:1.75;
  color:rgba(255,255,255,.55);
  max-width:280px;
}
.footer__badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.footer__badges .badge{
  background:rgba(255,255,255,.08);
  color:rgba(255,255,255,.8);
  height:28px;
  font-size:12px;
}
.footer__links,.footer__contact{display:grid;gap:11px}
.footer__links a{
  font-size:13.5px;
  color:rgba(255,255,255,.62);
}
.footer__links a:hover{color:#fff}
.footer__contact li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:13.5px;
  color:rgba(255,255,255,.62);
  line-height:1.65;
}
.footer__contact i{margin-top:5px;color:var(--brand-300);font-size:13px}
.footer__bottom{
  border-top:1px solid rgba(255,255,255,.09);
  padding:20px 28px 26px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  align-items:center;
  justify-content:space-between;
  font-size:12.5px;
  color:rgba(255,255,255,.45);
}
.footer__bottom .legal{max-width:620px;line-height:1.7}

/* ===== 动效降级 ===== */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .card:hover,.step-card:hover,.btn:hover{transform:none !important}
}

/* ===== 响应式 ===== */
@media (max-width:1279px){
  .container{padding:0 22px}
  .cat-hero h1{font-size:32px}
}

@media (max-width:1023px){
  :root{--nav-w:0px}
  .page-shell{margin-left:0}
  .mobile-bar{display:flex}
  .side-nav{
    top:56px;
    width:290px;
    transform:translateX(-102%);
    transition:transform .3s var(--ease);
    box-shadow:24px 0 48px -28px rgba(20,22,28,.7);
  }
  .side-nav.is-open{transform:translateX(0)}
  .section{padding:64px 0}
  .steps{grid-template-columns:1fr;gap:18px}
  .step-card::after{display:none}
  .stats-band{grid-template-columns:repeat(2,1fr)}
  .cta-card{grid-template-columns:1fr;gap:28px;padding:32px}
  .media-row + .media-row{margin-top:44px}
  .media-row .media-figure{margin-bottom:22px}
}

@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section-head{margin-bottom:26px}
  .section-head h2{font-size:23px}
  .cat-hero__inner{min-height:200px;flex-direction:column;align-items:flex-start;gap:18px;padding:36px 0}
  .cat-hero__bar{height:5px;width:56px}
  .cat-hero h1{font-size:26px}
  .cat-hero p{font-size:14.5px}
  .media-body h2{font-size:22px}
  .cta-form{grid-template-columns:1fr}
  .cta-card h2{font-size:22px}
  .footer__main{padding:44px 0 32px}
  .footer__desc{max-width:none}
  .footer__bottom{padding:18px;flex-direction:column;align-items:flex-start}

  .device-table caption{padding:18px 18px 12px}
  .device-table thead{display:none}
  .device-table,
  .device-table tbody,
  .device-table tr,
  .device-table td{display:block;width:100%}
  .device-table tbody tr{
    padding:8px 0;
    border-bottom:1px solid var(--line);
    background:transparent !important;
  }
  .device-table tbody tr:last-child{border-bottom:0}
  .device-table tbody td{
    display:flex;
    gap:16px;
    padding:9px 18px;
    border:0;
    font-size:14.5px;
  }
  .device-table tbody td::before{
    content:attr(data-label);
    flex:0 0 84px;
    font-size:12.5px;
    font-weight:600;
    color:var(--ink-500);
    line-height:1.7;
  }
}

@media (max-width:520px){
  .cat-hero h1{font-size:23px}
  .stats-band{grid-template-columns:1fr}
  .badge{height:30px;font-size:12px}
  .btn{height:46px;padding:0 20px;font-size:14.5px}
  .faq-accordion .accordion-title{font-size:15.5px;padding:16px 50px 16px 18px}
  .faq-accordion .accordion-content{padding:0 18px 18px}
}

/* roulang page: category4 */
:root{
  --brand-900:#7E1220;
  --brand-700:#A81C2C;
  --brand-500:#D22B3F;
  --brand-300:#F0808C;
  --brand-grad:linear-gradient(135deg,#A81C2C 0%,#D22B3F 52%,#F0603F 100%);
  --ink-900:#14161C;
  --ink-700:#2A2E38;
  --ink-500:#5A6070;
  --ink-300:#9AA0AE;
  --bg-100:#F7F4EE;
  --bg-200:#EFEAE1;
  --surface:#FFFFFF;
  --line:rgba(20,22,28,.07);
  --line-strong:rgba(20,22,28,.12);
  --accent:#C8F14A;
  --grass:#1F7A5A;
  --warn:#C9761B;
  --danger:#C0392B;
  --r-lg:22px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow-1:0 2px 8px rgba(20,22,28,.05);
  --shadow-2:0 12px 28px -12px rgba(20,22,28,.14);
  --shadow-3:0 22px 44px -18px rgba(168,28,44,.28);
  --ease:all .22s cubic-bezier(.2,.7,.3,1);
  --nav-w:248px;
  --space-1:8px;
  --space-2:16px;
  --space-3:24px;
  --space-4:32px;
  --space-5:48px;
  --space-6:64px;
  --space-7:96px;
}

*,*::before,*::after{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",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--bg-100);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:var(--ease);}
a:hover{color:var(--brand-500);}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3;letter-spacing:-.2px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 28px;}

/* ============ 布局 ============ */
.page-shell{padding-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column;}
.main-area{flex:1;}

/* ============ 品牌 ============ */
.brand{display:flex;align-items:center;gap:12px;}
.brand__mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:var(--brand-grad);display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-2);
}
.brand__mark svg{width:24px;height:24px;}
.brand__text{display:block;font-size:17px;font-weight:700;color:#fff;line-height:1.2;letter-spacing:-.2px;}
.brand__sub{display:block;font-size:10px;letter-spacing:2px;color:rgba(255,255,255,.55);font-weight:600;}

/* ============ 侧边导航 ============ */
.site-header{position:relative;z-index:60;}
.side-nav{
  position:fixed;top:0;left:0;width:var(--nav-w);height:100vh;
  display:flex;flex-direction:column;gap:var(--space-2);
  padding:26px 20px 22px;
  background:linear-gradient(180deg,#14161C 0%,#1D1720 55%,#3A1018 100%);
  border-right:1px solid rgba(255,255,255,.06);
  box-shadow:12px 0 32px -22px rgba(20,22,28,.45);
  overflow-y:auto;
  z-index:70;
}
.side-nav__sep{height:1px;background:rgba(255,255,255,.09);}
.nav-label{
  font-size:11px;letter-spacing:2px;color:rgba(255,255,255,.4);
  font-weight:700;margin:0;padding-left:10px;text-transform:uppercase;
}
.nav-list{display:flex;flex-direction:column;gap:4px;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;border-radius:10px;
  color:rgba(255,255,255,.72);font-size:14.5px;font-weight:500;
  transition:var(--ease);
}
.nav-item i{width:18px;font-size:15px;text-align:center;opacity:.85;}
.nav-item:hover{background:rgba(255,255,255,.07);color:#fff;}
.nav-item.is-active{background:rgba(255,255,255,.1);color:#fff;font-weight:600;}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand-grad);
}
.side-tip{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-md);
  padding:16px;
}
.side-tip h4{color:#fff;font-size:14px;margin-bottom:8px;}
.side-tip p{font-size:12.5px;line-height:1.7;color:rgba(255,255,255,.6);}
.side-tip a{display:inline-flex;align-items:center;gap:6px;margin-top:12px;font-size:12.5px;color:var(--brand-300);font-weight:600;}
.side-tip a:hover{color:#fff;}
.side-nav__foot{margin-top:auto;padding-top:var(--space-2);}
.side-nav__foot .btn{width:100%;}

/* ============ 移动端顶栏 ============ */
.mobile-bar{
  display:none;align-items:center;justify-content:space-between;
  height:56px;padding:0 16px;background:var(--bg-100);
  border-bottom:1px solid var(--line-strong);
  position:sticky;top:0;z-index:80;
}
.mobile-bar .brand__text{color:var(--ink-900);font-size:16px;}
.mobile-bar .brand__mark{width:32px;height:32px;flex:0 0 32px;border-radius:9px;}
.mobile-bar .brand__mark svg{width:19px;height:19px;}
.burger{width:40px;height:40px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:6px;border-radius:10px;}
.burger span{display:block;width:20px;height:2px;background:var(--ink-900);border-radius:2px;transition:var(--ease);}
body.nav-open .burger span:first-child{transform:translateY(4px) rotate(45deg);}
body.nav-open .burger span:last-child{transform:translateY(-4px) rotate(-45deg);}
.nav-mask{
  display:none;position:fixed;inset:0;background:rgba(20,22,28,.5);
  z-index:65;backdrop-filter:blur(2px);
}
body.nav-open .nav-mask{display:block;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.2px;
  transition:var(--ease);white-space:nowrap;
}
.btn--primary{background:var(--brand-grad);color:#fff;box-shadow:var(--shadow-2);}
.btn--primary:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-3);filter:brightness(1.06);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{background:var(--surface);color:var(--brand-700);border:1.5px solid var(--brand-700);}
.btn--ghost:hover{background:rgba(168,28,44,.08);color:var(--brand-700);transform:translateY(-2px);}
.btn--plain{background:transparent;color:var(--ink-500);padding:0 8px;height:auto;}
.btn--plain:hover{color:var(--brand-700);}
.btn--sm{height:36px;padding:0 16px;font-size:13.5px;border-radius:10px;}
.btn--lg{height:52px;padding:0 30px;}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:7px;
  height:32px;padding:0 14px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.2px;
  background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.16);
}
.badge--light{background:var(--surface);color:var(--ink-700);border:1px solid var(--line);}
.badge--lime{background:var(--accent);color:var(--ink-900);border-color:transparent;}
.dot{width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block;}
.badge--light .dot{background:var(--grass);}

/* ============ 面包屑 ============ */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);margin-bottom:16px;}
.breadcrumb a{color:var(--ink-500);}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb span.sep{color:var(--ink-300);}
.breadcrumb .current{color:var(--ink-900);font-weight:600;}

/* ============ 分类 Hero 条 ============ */
.cat-hero{
  position:relative;overflow:hidden;
  min-height:240px;display:flex;align-items:center;
  background-color:var(--bg-200);
  background-image:linear-gradient(90deg,rgba(247,244,238,.96) 0%,rgba(247,244,238,.86) 45%,rgba(247,244,238,.55) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center right;
  border-bottom:1px solid var(--line);
}
.cat-hero::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--brand-grad);
}
.cat-hero__inner{position:relative;padding:64px 0;}
.cat-hero h1{font-size:36px;font-weight:800;letter-spacing:-.5px;margin-bottom:14px;}
.cat-hero__lead{font-size:16px;color:var(--ink-500);max-width:660px;line-height:1.8;}
.cat-hero__badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.cat-hero__badges .badge{background:var(--surface);color:var(--ink-700);border:1px solid var(--line);box-shadow:var(--shadow-1);}
.cat-hero__badges .dot{background:var(--brand-500);}

/* ============ 板块 ============ */
.section{padding:var(--space-7) 0;}
.section--tight{padding:var(--space-6) 0;}
.section--alt{background:var(--bg-200);}
.section__head{max-width:720px;margin-bottom:var(--space-5);}
.section__head h2{font-size:28px;font-weight:700;margin-bottom:12px;}
.section__head p{font-size:15.5px;color:var(--ink-500);line-height:1.8;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:2px;color:var(--brand-700);
  text-transform:uppercase;margin-bottom:14px;
}

/* ============ 快速检索卡 ============ */
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.quick-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--shadow-1);transition:var(--ease);
  display:flex;flex-direction:column;gap:10px;
}
.quick-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.quick-card__icon{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(168,28,44,.09);color:var(--brand-700);font-size:17px;
}
.quick-card h3{font-size:17px;font-weight:600;}
.quick-card p{font-size:14px;color:var(--ink-500);line-height:1.75;}
.quick-card__link{margin-top:auto;font-size:13.5px;font-weight:600;color:var(--brand-700);display:inline-flex;align-items:center;gap:6px;}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow-1);overflow:hidden;transition:var(--ease);
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-item__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px;text-align:left;font-size:16.5px;font-weight:600;color:var(--ink-900);
  position:relative;transition:var(--ease);
}
.faq-item__q:hover{color:var(--brand-700);}
.faq-item__icon{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg-200);color:var(--brand-700);font-size:12px;transition:var(--ease);
}
.faq-item.is-open .faq-item__icon{transform:rotate(180deg);background:var(--brand-grad);color:#fff;}
.faq-item.is-open{border-color:rgba(168,28,44,.28);box-shadow:var(--shadow-2);}
.faq-item.is-open::after{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand-grad);
}
.faq-item{position:relative;}
.faq-item__a{
  max-height:0;overflow:hidden;transition:max-height .3s cubic-bezier(.2,.7,.3,1);
}
.faq-item__a-inner{
  padding:0 24px 22px;font-size:14.8px;color:var(--ink-500);line-height:1.85;
  border-top:1px dashed var(--line-strong);padding-top:18px;margin:0 24px 0;padding-left:0;padding-right:0;
}
.faq-item.is-open .faq-item__a{max-height:320px;}

/* ============ 规则要点双列清单 ============ */
.rule-wrap{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);padding:36px;
}
.rule-cols{display:grid;grid-template-columns:1fr 1fr;gap:0 40px;}
.rule-item{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line);}
.rule-item:last-child{border-bottom:none;}
.rule-item__no{
  flex:0 0 30px;height:30px;border-radius:9px;display:flex;align-items:center;justify-content:center;
  background:var(--bg-200);color:var(--brand-700);font-size:13px;font-weight:700;
}
.rule-item h3{font-size:15.5px;font-weight:600;margin-bottom:6px;}
.rule-item p{font-size:14px;color:var(--ink-500);line-height:1.75;}

/* ============ 排查图文区 ============ */
.step-layout{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;}
.step-media{
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-2);
  position:relative;aspect-ratio:16/11;background:var(--bg-200);
}
.step-media img{width:100%;height:100%;object-fit:cover;transition:var(--ease);}
.step-media:hover img{transform:scale(1.04);}
.step-list{display:flex;flex-direction:column;gap:18px;}
.step-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px 22px;box-shadow:var(--shadow-1);display:flex;gap:18px;transition:var(--ease);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.step-card__no{
  font-size:26px;font-weight:800;line-height:1;color:var(--brand-500);
  font-family:"DIN Alternate","Bebas Neue",system-ui,sans-serif;letter-spacing:1px;
  flex:0 0 auto;
}
.step-card h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.step-card p{font-size:14px;color:var(--ink-500);line-height:1.75;}

/* ============ 提示条 ============ */
.notice-bar{
  display:flex;align-items:flex-start;gap:16px;
  background:linear-gradient(90deg,rgba(200,241,74,.22) 0%,rgba(200,241,74,.05) 100%);
  border:1px solid rgba(31,122,90,.2);border-left:4px solid var(--grass);
  border-radius:var(--r-md);padding:20px 24px;
}
.notice-bar i{color:var(--grass);font-size:18px;margin-top:3px;}
.notice-bar h3{font-size:16px;font-weight:600;margin-bottom:6px;}
.notice-bar p{font-size:14px;color:var(--ink-500);line-height:1.75;}

/* ============ CTA ============ */
.cta-band{
  background:var(--surface);border:1px solid rgba(168,28,44,.22);
  border-radius:var(--r-lg);box-shadow:var(--shadow-2);
  padding:44px;display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;
}
.cta-band h2{font-size:26px;font-weight:800;margin-bottom:12px;}
.cta-band__desc{font-size:15px;color:var(--ink-500);line-height:1.8;margin-bottom:18px;}
.cta-band__badges{display:flex;flex-wrap:wrap;gap:10px;}
.cta-form{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field--full{grid-column:1 / -1;}
.field label{font-size:13px;font-weight:600;color:var(--ink-700);}
.field input,.field select{
  height:48px;border-radius:var(--r-sm);border:1px solid var(--line-strong);
  background:var(--bg-100);padding:0 14px;font-size:14.5px;color:var(--ink-900);
  transition:var(--ease);font-family:inherit;
}
.field input::placeholder{color:var(--ink-300);}
.field input:focus,.field select:focus{
  border-color:var(--brand-700);background:var(--surface);
  box-shadow:0 0 0 4px rgba(168,28,44,.12);outline:none;
}
.form-note{grid-column:1 / -1;font-size:12px;color:var(--ink-500);}
.form-note.error{color:var(--danger);font-size:13px;}

/* ============ 页脚 ============ */
.footer{background:var(--ink-900);color:rgba(255,255,255,.66);margin-top:auto;}
.footer::before{content:"";display:block;height:1px;background:var(--brand-grad);}
.footer__main{padding:64px 0 44px;}
.footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;}
.footer .brand{margin-bottom:16px;}
.footer__desc{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.55);max-width:280px;margin-bottom:18px;}
.footer__badges{display:flex;flex-wrap:wrap;gap:8px;}
.footer__badges .badge{height:28px;font-size:12px;padding:0 12px;background:rgba(255,255,255,.08);}
.footer__links li{margin-bottom:11px;}
.footer__links a{font-size:14px;color:rgba(255,255,255,.62);}
.footer__links a:hover{color:#fff;}
.footer__contact li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.62);margin-bottom:12px;line-height:1.6;}
.footer__contact i{color:var(--brand-300);margin-top:4px;font-size:13px;}
.footer__bottom{border-top:1px solid rgba(255,255,255,.09);padding:20px 0;}
.footer__bottom-inner{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.45);
}

/* ============ 响应式 ============ */
@media screen and (max-width:1279px){
  .container{padding:0 22px;}
  .step-layout{gap:32px;}
  .cta-band{gap:32px;padding:36px;}
}
@media screen and (max-width:1023px){
  :root{--nav-w:0px;}
  .page-shell{padding-left:0;}
  .mobile-bar{display:flex;}
  .side-nav{
    transform:translateX(-100%);
    transition:transform .28s cubic-bezier(.2,.7,.3,1);
    width:280px;
  }
  body.nav-open .side-nav{transform:translateX(0);}
  .section{padding:72px 0;}
  .section--tight{padding:56px 0;}
  .quick-grid{grid-template-columns:repeat(2,1fr);}
  .cat-hero__inner{padding:52px 0;}
  .cat-hero h1{font-size:30px;}
}
@media screen and (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section--tight{padding:44px 0;}
  .section__head{margin-bottom:var(--space-4);}
  .section__head h2{font-size:22px;}
  .cat-hero{min-height:auto;}
  .cat-hero__inner{padding:40px 0;}
  .cat-hero h1{font-size:26px;}
  .cat-hero__lead{font-size:15px;}
  .quick-grid{grid-template-columns:1fr;}
  .rule-cols{grid-template-columns:1fr;gap:0;}
  .rule-wrap{padding:24px;}
  .step-layout{grid-template-columns:1fr;gap:28px;}
  .cta-band{grid-template-columns:1fr;gap:28px;padding:28px;}
  .cta-form{grid-template-columns:1fr;}
  .cta-band h2{font-size:22px;}
  .faq-item__q{padding:18px;font-size:15.5px;}
  .faq-item.is-open .faq-item__a{max-height:520px;}
  .footer__main{padding:48px 0 30px;}
  .footer__bottom-inner{flex-direction:column;}
}
@media screen and (max-width:520px){
  .btn{height:46px;font-size:14.5px;padding:0 18px;}
  .brand__text{font-size:15px;}
  .cat-hero h1{font-size:23px;}
  .step-card{flex-direction:column;gap:10px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}