/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --c-primary:#DB3A22;
  --c-primary-2:#F97C1F;
  --grad:linear-gradient(135deg,#DB3A22 0%,#F97C1F 100%);
  --ink-900:#0E3B36;
  --ink-700:#14544C;
  --lime:#CBF24D;
  --bg:#F7F4EF;
  --surface:#FFFFFF;
  --surface-2:#F1ECE4;
  --line:#E6DFD4;
  --text:#23201D;
  --text-2:#6E655C;
  --ok:#1F8A6B;
  --warn:#C9861A;
  --err:#C0392B;
  --r-s:10px;
  --r-m:16px;
  --r-l:24px;
  --r-p:999px;
  --sh-1:0 1px 2px rgba(14,59,54,.06),0 10px 28px rgba(14,59,54,.07);
  --sh-2:0 6px 14px rgba(14,59,54,.10),0 20px 44px rgba(14,59,54,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-w:240px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
@media (min-width:1440px){:root{--nav-w:264px;}}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--c-primary-2);}
h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit;}
input,select,textarea{font-family:inherit;font-size:16px;}
h1{font-size:44px;line-height:1.18;font-weight:800;letter-spacing:-.02em;}
h2{font-size:32px;line-height:1.3;font-weight:700;letter-spacing:-.02em;}
h3{font-size:22px;line-height:1.4;font-weight:600;letter-spacing:-.01em;}
h4{font-size:18px;line-height:1.5;font-weight:600;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(219,58,34,.30);border-radius:6px;}
::selection{background:rgba(219,58,34,.18);}

/* ============ 布局容器 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.container{max-width:1280px;}}
@media (max-width:639px){.container{padding:0 16px;}}
.layout{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column;}

/* ============ 左侧竖向导航 ============ */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:var(--surface);border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:60;
}
.brand{height:88px;display:flex;align-items:center;gap:12px;padding:0 20px;border-bottom:1px solid var(--line);flex:0 0 auto;}
.brand-logo{
  width:40px;height:40px;border-radius:12px;background:var(--grad);
  color:#fff;font-size:17px;font-weight:800;display:flex;align-items:center;justify-content:center;
  flex:0 0 auto;box-shadow:0 6px 16px rgba(219,58,34,.28);letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.32;min-width:0;}
.brand-text strong{font-size:15.5px;font-weight:800;color:var(--text);white-space:nowrap;letter-spacing:-.01em;}
.brand-text em{font-style:normal;font-size:12px;color:var(--text-2);white-space:nowrap;}
.side-menu{flex:1 1 auto;overflow-y:auto;padding:20px 14px;display:flex;flex-direction:column;gap:6px;}
.side-link{
  position:relative;display:flex;align-items:center;gap:10px;height:44px;
  padding:0 14px;border-radius:12px;font-size:14.5px;font-weight:600;color:var(--text-2);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.side-link i{width:18px;font-size:14px;text-align:center;color:#A79E93;transition:color .2s var(--ease);}
.side-link:hover{background:rgba(219,58,34,.07);color:var(--c-primary);}
.side-link:hover i{color:var(--c-primary);}
.side-link.active{color:var(--c-primary);background:rgba(219,58,34,.07);}
.side-link.active i{color:var(--c-primary);}
.side-link.active::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;background:var(--grad);}
.side-foot{padding:16px 14px 24px;border-top:1px solid var(--line);flex:0 0 auto;}
.side-foot .btn{width:100%;}
.side-contact{margin-top:12px;font-size:12.5px;line-height:1.7;color:var(--text-2);}
.side-contact b{color:var(--ink-900);font-weight:700;}

/* ============ 移动端顶部导航与抽屉 ============ */
.mobile-bar{display:none;}
.drawer,.drawer-mask{display:none;}
@media (max-width:1023px){
  .side-nav{display:none;}
  .layout{margin-left:0;padding-top:64px;}
  .mobile-bar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:64px;padding:0 16px;
    background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);
    backdrop-filter:blur(10px);z-index:80;
  }
  .mobile-brand{display:flex;align-items:center;gap:10px;min-width:0;}
  .mobile-brand .brand-logo{width:34px;height:34px;border-radius:10px;font-size:15px;}
  .mobile-brand strong{font-size:15px;font-weight:800;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
  .menu-btn{
    width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
    display:flex;align-items:center;justify-content:center;font-size:17px;color:var(--ink-900);
    transition:background .2s var(--ease),color .2s var(--ease);
  }
  .menu-btn:hover{background:var(--surface-2);}
  .drawer{
    display:block;position:fixed;top:0;right:0;bottom:0;width:84%;max-width:360px;
    background:#fff;z-index:100;transform:translateX(105%);
    transition:transform .3s var(--ease);display:flex;flex-direction:column;
    box-shadow:-16px 0 40px rgba(14,59,54,.18);
  }
  .drawer.open{transform:translateX(0);}
  .drawer-head{height:64px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-bottom:1px solid var(--line);}
  .drawer-head strong{font-size:15.5px;font-weight:800;}
  .drawer-close{width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:var(--surface-2);color:var(--ink-900);}
  .drawer-menu{flex:1 1 auto;overflow-y:auto;padding:14px;}
  .drawer-link{
    display:flex;align-items:center;gap:12px;height:52px;padding:0 14px;border-radius:12px;
    font-size:15px;font-weight:600;color:var(--text-2);
  }
  .drawer-link i{width:20px;text-align:center;color:#A79E93;}
  .drawer-link.active{color:var(--c-primary);background:rgba(219,58,34,.07);}
  .drawer-link.active i{color:var(--c-primary);}
  .drawer-foot{padding:16px 14px 24px;border-top:1px solid var(--line);}
  .drawer-foot .btn{width:100%;}
  .drawer-mask{
    display:block;position:fixed;inset:0;background:rgba(14,59,54,.55);
    opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s;z-index:90;
  }
  .drawer-mask.show{opacity:1;visibility:visible;}
}

/* ============ 页面标题条与面包屑 ============ */
.page-bar{height:64px;background:var(--surface);border-bottom:1px solid var(--line);display:flex;align-items:center;position:relative;z-index:30;}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-2);}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#C9C0B3;}
.breadcrumb .current{color:var(--c-primary);font-weight:600;}

/* ============ 按钮与链接 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;font-size:16px;font-weight:600;line-height:1;
  white-space:nowrap;border:1.5px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 6px 18px rgba(219,58,34,.26);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(219,58,34,.32);filter:brightness(1.06);}
.btn-ghost{border-color:rgba(255,255,255,.55);color:#fff;}
.btn-ghost:hover{background:#fff;color:var(--ink-900);transform:translateY(-2px);}
.btn-outline{border-color:var(--ink-700);color:var(--ink-700);background:transparent;}
.btn-outline:hover{background:var(--ink-900);color:#fff;border-color:var(--ink-900);transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-lg{height:54px;padding:0 34px;font-size:17px;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);
  text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;
}
.link-more:hover{color:var(--c-primary-2);}
.link-more i{font-size:12px;transition:transform .2s var(--ease);}
.link-more:hover i{transform:translateX(3px);}

/* ============ 板块通用 ============ */
.section{padding:88px 0;}
.section-alt{background:var(--surface-2);}
.section-white{background:var(--surface);}
@media (max-width:1023px){.section{padding:72px 0;}}
@media (max-width:639px){.section{padding:56px 0;}}
.section-head{max-width:780px;margin-bottom:40px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;
  letter-spacing:.06em;color:var(--c-primary);text-transform:uppercase;margin-bottom:12px;
}
.section-head .eyebrow::before{content:"";width:18px;height:3px;border-radius:3px;background:var(--grad);}
.section-head h2{padding-left:18px;position:relative;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:6px;border-radius:6px;background:var(--grad);
}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px;line-height:1.85;}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.section-head-row .section-head{margin-bottom:0;}
@media (max-width:767px){.section-head-row{flex-direction:column;align-items:flex-start;gap:16px;}}

/* ============ 徽章 ============ */
.badge-row{display:flex;flex-wrap:wrap;gap:12px;}
.badge{
  display:inline-flex;align-items:baseline;gap:8px;padding:10px 18px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;line-height:1.4;
}
.badge b{font-size:21px;font-weight:800;font-variant-numeric:tabular-nums;line-height:1;}
.badge-dark{background:var(--ink-900);color:var(--lime);border:1px solid rgba(203,242,77,.28);}
.badge-dark b{color:var(--lime);}
.badge-light{background:var(--surface-2);color:var(--ink-900);border:1px solid var(--line);}
.badge-light b{color:var(--c-primary);}
.badge-lime{background:rgba(203,242,77,.16);color:var(--ink-900);border:1px solid rgba(203,242,77,.55);}
.badge-lime b{color:var(--ink-900);}
@media (max-width:639px){
  .badge-row{flex-wrap:nowrap;overflow-x:auto;padding-bottom:8px;-webkit-overflow-scrolling:touch;}
  .badge-row::-webkit-scrollbar{height:4px;}
  .badge-row::-webkit-scrollbar-thumb{background:rgba(14,59,54,.2);border-radius:4px;}
  .badge-row .badge{flex:0 0 auto;}
}

/* ============ 标签 ============ */
.tag{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;
  background:rgba(219,58,34,.09);color:var(--c-primary);
  font-size:12px;font-weight:600;letter-spacing:.02em;line-height:1.6;
}
.tag-ink{background:rgba(20,84,76,.10);color:var(--ink-700);}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;color:#fff;
  padding:76px 0 68px;
  background-image:
    linear-gradient(135deg,rgba(9,42,38,.94) 0%,rgba(20,84,76,.86) 34%,rgba(219,58,34,.82) 72%,rgba(249,124,31,.80) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;opacity:.6;
}
.hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:center;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;padding:7px 16px;border-radius:999px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;color:rgba(255,255,255,.92);
}
.hero-eyebrow span{width:7px;height:7px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 4px rgba(203,242,77,.18);}
.hero h1{margin-top:22px;color:#fff;}
.hero-sub{margin-top:18px;max-width:620px;font-size:16.5px;line-height:1.85;color:rgba(255,255,255,.82);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero .badge-row{margin-top:32px;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:24px;
  border:1px solid rgba(255,255,255,.2);box-shadow:0 24px 60px rgba(0,0,0,.3);
}
.hero-media .hero-float{
  position:absolute;left:-18px;bottom:22px;background:#fff;color:var(--text);
  border-radius:16px;padding:14px 18px;box-shadow:var(--sh-2);display:flex;align-items:center;gap:12px;
}
.hero-float i{
  width:38px;height:38px;border-radius:12px;background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:15px;flex:0 0 auto;
}
.hero-float span{font-size:12.5px;color:var(--text-2);line-height:1.5;}
.hero-float b{display:block;font-size:15px;font-weight:800;color:var(--ink-900);}
@media (max-width:1023px){
  .hero{padding:56px 0 52px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-media img{aspect-ratio:16/9;}
  .hero-media .hero-float{left:12px;bottom:12px;}
}
@media (max-width:639px){
  .hero{padding:44px 0 44px;}
  .hero-actions .btn{width:100%;}
  .hero-media .hero-float{display:none;}
}

/* ============ 数据信赖条 ============ */
.trust{background:var(--surface);border-bottom:1px solid var(--line);}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.trust-item{position:relative;padding:34px 20px;text-align:center;}
.trust-item:not(:last-child)::after{
  content:"";position:absolute;right:0;top:50%;transform:translateY(-50%);
  width:1px;height:40px;background:var(--line);
}
.trust-item b{display:block;font-size:30px;font-weight:800;line-height:1.2;color:var(--c-primary);font-variant-numeric:tabular-nums;}
.trust-item span{display:block;margin-top:6px;font-size:13px;color:var(--text-2);}
@media (max-width:767px){
  .trust-grid{grid-template-columns:repeat(2,1fr);}
  .trust-item{padding:24px 12px;}
  .trust-item:nth-child(2n)::after{display:none;}
  .trust-item b{font-size:24px;}
}

/* ============ 价值主张 ============ */
.value-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:24px;}
.value-card{
  background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:28px;
  box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease);
  display:flex;flex-direction:column;
}
.value-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.value-card.big{grid-column:1;grid-row:1 / span 2;}
.value-card.wide{grid-column:2 / span 2;}
.value-card h3{font-size:19px;margin-bottom:12px;}
.value-card p{font-size:15px;line-height:1.8;color:var(--text-2);}
.value-card .badge{margin-top:auto;padding-top:16px;}
.value-card .badge{margin-top:20px;align-self:flex-start;}
.value-card figure{margin-top:20px;border-radius:16px;overflow:hidden;}
.value-card figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease);}
.value-card:hover figure img{transform:scale(1.04);}
@media (max-width:1023px){
  .value-grid{grid-template-columns:1fr 1fr;}
  .value-card.big{grid-column:1 / span 2;grid-row:auto;}
  .value-card.wide{grid-column:1 / span 2;}
}
@media (max-width:639px){
  .value-grid{grid-template-columns:1fr;}
  .value-card.big,.value-card.wide{grid-column:auto;}
}

/* ============ 功能分组 ============ */
.feature-wrap{display:grid;grid-template-columns:200px 1fr;gap:40px;align-items:start;}
.feature-tabs{position:sticky;top:88px;display:flex;flex-direction:column;gap:8px;}
.feature-tab{
  position:relative;display:block;padding:13px 16px;border-radius:12px;text-align:left;
  font-size:15px;font-weight:600;color:var(--text-2);background:transparent;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.feature-tab::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;
  background:var(--grad);opacity:0;transition:opacity .2s var(--ease);
}
.feature-tab:hover{color:var(--c-primary);background:rgba(219,58,34,.05);}
.feature-tab.active{color:var(--c-primary);background:rgba(219,58,34,.07);}
.feature-tab.active::before{opacity:1;}
.feature-panels{display:flex;flex-direction:column;gap:20px;}
.feature-card{
  background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:28px;
  box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease);
  scroll-margin-top:96px;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.feature-card-head{display:flex;align-items:center;gap:14px;margin-bottom:16px;}
.feature-icon{
  width:46px;height:46px;border-radius:14px;background:rgba(20,84,76,.08);
  border:1px solid rgba(20,84,76,.16);color:var(--ink-700);
  display:flex;align-items:center;justify-content:center;font-size:18px;flex:0 0 auto;
}
.feature-card h3{font-size:19px;}
.feature-list{display:flex;flex-direction:column;gap:10px;}
.feature-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--text-2);line-height:1.75;}
.feature-list li i{color:var(--ok);font-size:13px;margin-top:7px;flex:0 0 auto;}
@media (max-width:1023px){
  .feature-wrap{grid-template-columns:1fr;gap:24px;}
  .feature-tabs{position:static;flex-direction:row;flex-wrap:wrap;gap:8px;}
  .feature-tab{padding:10px 14px;background:var(--surface);border:1px solid var(--line);}
  .feature-tab::before{display:none;}
}

/* ============ 使用场景 ============ */
.scene-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 18px;-webkit-overflow-scrolling:touch;
}
.scene-track::-webkit-scrollbar{height:6px;}
.scene-track::-webkit-scrollbar-thumb{background:rgba(14,59,54,.18);border-radius:6px;}
.scene-card{
  flex:0 0 calc((100% - 40px) / 2.5);
  scroll-snap-align:start;
  background:var(--surface);border:1px solid var(--line);border-radius:16px;overflow:hidden;
  box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.scene-card figure{overflow:hidden;}
.scene-card figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease);}
.scene-card:hover figure img{transform:scale(1.05);}
.scene-body{padding:24px;display:flex;flex-direction:column;flex:1 1 auto;}
.scene-body h3{font-size:18px;margin-bottom:10px;}
.scene-body p{font-size:15px;line-height:1.8;color:var(--text-2);}
.scene-body .link-more{margin-top:auto;padding-top:18px;align-self:flex-start;}
@media (max-width:1023px){.scene-card{flex:0 0 62%;} }
@media (max-width:639px){.scene-card{flex:0 0 86%;} }

/* ============ 成功案例 ============ */
.case-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:start;}
.case-card{
  background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:32px;
  box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.case-card.offset{margin-top:36px;}
.case-person{display:flex;align-items:center;gap:14px;margin-bottom:20px;}
.case-person img{width:48px;height:48px;border-radius:50%;object-fit:cover;border:2px solid var(--surface-2);}
.case-person strong{display:block;font-size:15px;font-weight:700;color:var(--text);}
.case-person span{font-size:12.5px;color:var(--text-2);}
.case-quote{font-size:17px;line-height:1.85;color:var(--text);border-left:4px solid transparent;border-image:var(--grad) 1;padding-left:16px;}
.case-card h3{margin-bottom:14px;}
.case-card p{font-size:15px;line-height:1.8;color:var(--text-2);}
.case-card .badge-row{margin-top:22px;}
.case-card figure{margin-top:22px;border-radius:16px;overflow:hidden;}
.case-card figure img{width:100%;aspect-ratio:16/9;object-fit:cover;}
@media (max-width:1023px){
  .case-grid{grid-template-columns:1fr;}
  .case-card.offset{margin-top:0;}
}

/* ============ 价格 ============ */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.price-card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:24px;
  padding:32px;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.price-card.featured{
  border:2px solid transparent;
  background-image:linear-gradient(#fff,#fff),var(--grad);
  background-origin:border-box;background-clip:padding-box,border-box;
  transform:translateY(-8px);box-shadow:var(--sh-2);
}
.price-card.featured:hover{transform:translateY(-12px);}
.price-flag{
  position:absolute;top:-13px;left:32px;padding:5px 14px;border-radius:999px;
  background:var(--grad);color:#fff;font-size:12px;font-weight:700;letter-spacing:.02em;
}
.price-name{font-size:16px;font-weight:700;color:var(--ink-900);}
.price-desc{font-size:13.5px;color:var(--text-2);margin-top:6px;line-height:1.7;}
.price-num{display:flex;align-items:baseline;gap:6px;margin:20px 0 4px;font-variant-numeric:tabular-nums;}
.price-num b{font-size:40px;font-weight:800;color:var(--c-primary);line-height:1;letter-spacing:-.02em;}
.price-num i{font-style:normal;font-size:15px;color:var(--text-2);}
.price-cycle{font-size:12.5px;color:var(--text-2);}
.price-list{margin:24px 0;display:flex;flex-direction:column;gap:11px;flex:1 1 auto;}
.price-list li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:var(--text-2);line-height:1.7;}
.price-list li i{color:var(--ok);font-size:13px;margin-top:6px;flex:0 0 auto;}
.price-card .btn{width:100%;}
@media (max-width:1023px){
  .price-grid{grid-template-columns:1fr;}
  .price-card.featured{transform:none;}
  .price-card.featured:hover{transform:translateY(-4px);}
}

/* ============ 最新信息（CMS 列表） ============ */
.cms-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.cms-card{
  background:var(--surface);border:1px solid var(--line);border-radius:16px;overflow:hidden;
  box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.cms-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.cms-cover{display:block;overflow:hidden;}
.cms-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease);}
.cms-card:hover .cms-cover img{transform:scale(1.05);}
.cms-body{padding:24px;display:flex;flex-direction:column;flex:1 1 auto;}
.cms-body h3{font-size:17.5px;line-height:1.5;margin:12px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.cms-body h3 a{color:var(--text);}
.cms-body h3 a:hover{color:var(--c-primary);}
.cms-body p{font-size:14.5px;line-height:1.75;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.cms-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:18px;border-top:1px solid var(--line);}
.cms-meta time{font-size:13px;color:var(--text-2);}
.cms-meta a{font-size:13.5px;font-weight:600;color:var(--c-primary);}
.cms-empty{
  text-align:center;padding:56px 24px;background:var(--surface);
  border:1px dashed var(--line);border-radius:16px;
}
.cms-empty i{font-size:48px;color:#CFC7BA;line-height:1;}
.cms-empty p{margin:16px 0 20px;color:var(--text-2);font-size:15px;}
@media (max-width:1023px){.cms-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:639px){.cms-grid{grid-template-columns:1fr;}}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px 24px;align-items:start;}
.faq-grid .accordion{margin:0;background:transparent;border:0;}
.faq-grid .accordion .accordion-item{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:14px;overflow:hidden;margin-bottom:14px;
  transition:box-shadow .2s var(--ease);
}
.faq-grid .accordion .accordion-item:hover{box-shadow:var(--sh-1);}
.faq-grid .accordion .accordion-item::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;border-radius:0 4px 4px 0;
  background:var(--grad);opacity:0;transition:opacity .24s var(--ease);z-index:2;
}
.faq-grid .accordion .accordion-item.is-active::before{opacity:1;}
.faq-grid .accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:15px 20px 15px 22px;border:0;background:transparent;
  font-size:16px;font-weight:600;color:var(--text);line-height:1.5;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.faq-grid .accordion .accordion-title::before{display:none;}
.faq-grid .accordion .accordion-title:hover{color:var(--c-primary);background:rgba(219,58,34,.04);}
.faq-grid .accordion .accordion-title::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;
  color:var(--text-2);transition:transform .24s var(--ease),color .24s var(--ease);flex:0 0 auto;
}
.faq-grid .accordion .accordion-item.is-active .accordion-title::after{
  content:"\f068";color:var(--c-primary);transform:rotate(180deg);
}
.faq-grid .accordion .accordion-content{
  padding:0 22px 18px;border:0;background:transparent;
  font-size:15.5px;line-height:1.85;color:var(--text-2);
}
.faq-more{margin-top:26px;font-size:14.5px;color:var(--text-2);}
@media (max-width:1023px){.faq-grid{grid-template-columns:1fr;gap:0;}}

/* ============ 深色 CTA 带 ============ */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink-900);color:#fff;padding:64px 0;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(203,242,77,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(203,242,77,.07) 1px,transparent 1px);
  background-size:48px 48px;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;}
.cta-inner h2{color:#fff;font-size:30px;max-width:640px;}
.cta-inner p{margin-top:12px;color:rgba(255,255,255,.78);font-size:15.5px;max-width:640px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto;}
@media (max-width:1023px){
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
}
@media (max-width:639px){
  .cta-actions .btn{width:100%;}
  .cta-inner h2{font-size:24px;}
}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.78);margin-top:auto;}
.footer-top{padding:56px 0 40px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.footer-brand{display:flex;flex-direction:column;gap:14px;}
.footer-brand .fb-logo{display:flex;align-items:center;gap:12px;}
.footer-brand .fb-logo .brand-logo{box-shadow:none;}
.footer-brand .fb-logo strong{color:#fff;font-size:16px;font-weight:800;}
.footer-brand p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.66);}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:-.01em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{
  display:inline-block;color:rgba(255,255,255,.78);font-size:14px;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col a:hover{color:var(--lime);transform:translateX(2px);}
.footer-col .contact-line{font-size:14px;color:rgba(255,255,255,.78);line-height:1.9;}
.footer-col .contact-line b{color:#fff;font-weight:700;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:var(--lime);}
@media (max-width:1023px){.footer-top{grid-template-columns:1fr 1fr;}}
@media (max-width:639px){.footer-top{grid-template-columns:1fr;padding:44px 0 32px;}}

/* roulang page: article */
:root{
  --brand-1:#DB3A22;
  --brand-2:#F97C1F;
  --brand-grad:linear-gradient(135deg,#DB3A22 0%,#F97C1F 100%);
  --ink-900:#0E3B36;
  --ink-700:#14544C;
  --lime:#CBF24D;
  --bg:#F7F4EF;
  --bg-2:#F1ECE4;
  --card:#FFFFFF;
  --line:#E6DFD4;
  --text:#23201D;
  --muted:#6E655C;
  --ok:#1F8A6B;
  --warn:#C9861A;
  --err:#C0392B;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,59,54,.06),0 10px 28px rgba(14,59,54,.07);
  --sh-2:0 6px 14px rgba(14,59,54,.10),0 20px 44px rgba(14,59,54,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:200ms cubic-bezier(.2,.7,.3,1);
  --sidebar-w:240px;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-1);text-decoration:none;transition:color var(--t),background var(--t),border-color var(--t),transform var(--t),box-shadow var(--t)}
a:hover{color:var(--brand-1)}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;color:var(--text);font-weight:700}
h1{font-size:44px;line-height:1.18;font-weight:800}
h2{font-size:32px;line-height:1.3}
h3{font-size:22px;line-height:1.4;font-weight:600}
h4{font-size:18px;line-height:1.5;font-weight:600}
p{margin:0 0 16px}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(219,58,34,.30);border-radius:var(--r-pill)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.page-shell{padding-left:0;min-height:100vh;display:flex;flex-direction:column}
.page-shell main{flex:1 1 auto}
@media (min-width:1024px){
  .page-shell{padding-left:var(--sidebar-w)}
}

/* ============ 左侧竖向导航 ============ */
.sidebar{
  display:none;
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:#fff;
  border-right:1px solid var(--line);
  z-index:60;
  padding:0 14px 20px;
  flex-direction:column;
}
@media (min-width:1024px){ .sidebar{display:flex} }
.sidebar .brand{
  display:flex;align-items:center;gap:10px;
  height:88px;flex:0 0 88px;padding:0 8px;
  color:var(--text);
}
.sidebar .brand:hover{color:var(--text)}
.brand-logo{
  width:40px;height:40px;flex:0 0 40px;
  border-radius:12px;
  background:var(--brand-grad);
  color:#fff;
  display:grid;place-items:center;
  font-size:19px;font-weight:800;
  box-shadow:0 6px 16px rgba(219,58,34,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-text strong{font-size:16px;font-weight:700;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted)}
.side-menu{display:flex;flex-direction:column;gap:6px;flex:1 1 auto;padding-top:6px}
.side-link{
  position:relative;
  display:flex;align-items:center;gap:10px;
  height:44px;padding:8px 16px;
  border-radius:12px;
  font-size:15px;font-weight:500;
  color:var(--muted);
  white-space:nowrap;
}
.side-link i{width:18px;text-align:center;font-size:15px;color:var(--ink-700);transition:color var(--t)}
.side-link:hover{background:rgba(219,58,34,.07);color:var(--brand-1)}
.side-link:hover i{color:var(--brand-1)}
.side-link.active{background:rgba(219,58,34,.08);color:var(--brand-1);font-weight:600}
.side-link.active i{color:var(--brand-1)}
.side-link.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand-grad);
}
.side-foot{border-top:1px solid var(--line);padding:16px 8px 0;margin-top:14px}
.side-foot p{margin:10px 0 0;font-size:13px;line-height:1.7;color:var(--muted)}
.side-foot b{color:var(--ink-900);font-variant-numeric:tabular-nums}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:12px 28px;
  border-radius:var(--r-pill);
  border:1.5px solid transparent;
  font-size:16px;font-weight:600;line-height:1;
  cursor:pointer;
  transition:var(--t);
  text-align:center;
}
.btn.primary{background:var(--brand-grad);color:#fff;box-shadow:0 8px 20px rgba(219,58,34,.24)}
.btn.primary:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 14px 30px rgba(219,58,34,.30)}
.btn.ghost{background:transparent;border-color:var(--ink-700);color:var(--ink-700)}
.btn.ghost:hover{background:var(--ink-700);color:#fff;transform:translateY(-2px)}
.btn.small{height:40px;padding:8px 18px;font-size:14px}
.btn.lg{height:52px;padding:14px 32px;font-size:17px}
.btn-line{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-1);font-weight:600;font-size:15px;
  border-bottom:1px solid transparent;
}
.btn-line:hover{border-bottom-color:var(--brand-1)}

/* ============ 移动端顶部导航 + 抽屉 ============ */
.topbar{
  position:sticky;top:0;z-index:70;
  height:64px;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
@media (min-width:1024px){ .topbar{display:none} }
.topbar .brand{display:flex;align-items:center;gap:10px;color:var(--text)}
.topbar .brand strong{font-size:16px;font-weight:700;white-space:nowrap}
.hamburger{
  width:44px;height:44px;flex:0 0 44px;
  border:1px solid var(--line);border-radius:12px;
  background:#fff;cursor:pointer;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  transition:var(--t);
}
.hamburger:hover{border-color:var(--brand-1)}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);transition:var(--t)}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer-mask{
  position:fixed;inset:0;z-index:80;
  background:rgba(14,59,54,.55);
  opacity:0;visibility:hidden;
  transition:opacity var(--t),visibility var(--t);
}
.drawer-mask.show{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:90;
  width:84%;max-width:360px;
  background:#fff;
  padding:20px 18px 26px;
  overflow-y:auto;
  transform:translateX(102%);
  transition:transform 260ms var(--ease);
  box-shadow:-20px 0 50px rgba(14,59,54,.20);
  display:flex;flex-direction:column;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;gap:10px;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:14px}
.drawer-head strong{font-size:16px}
.drawer-nav{display:flex;flex-direction:column;gap:6px;flex:1 1 auto}
.drawer-link{
  display:flex;align-items:center;gap:12px;
  height:52px;padding:0 14px;
  border-radius:12px;
  font-size:15px;font-weight:500;color:var(--text);
}
.drawer-link i{width:18px;text-align:center;color:var(--ink-700)}
.drawer-link:hover{background:rgba(219,58,34,.07);color:var(--brand-1)}
.drawer-link.active{background:rgba(219,58,34,.08);color:var(--brand-1);font-weight:600}
.drawer-link.active i{color:var(--brand-1)}
.drawer .btn{margin-top:18px;width:100%}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--muted);line-height:40px;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand-1)}
.breadcrumb .sep{color:#c8bfb2}
.breadcrumb .cur{color:var(--brand-1);font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:320px}

/* ============ 文章标题区 ============ */
.article-hero{
  background:linear-gradient(180deg,#FDFBF8 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
  padding:20px 0 34px;
  position:relative;
  overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(14,59,54,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(14,59,54,.05) 1px,transparent 1px);
  background-size:44px 44px;
  pointer-events:none;
  opacity:.55;
}
.article-hero .container{position:relative;z-index:1}
.article-hero h1{
  margin:14px 0 16px;
  font-size:34px;line-height:1.3;font-weight:800;
  max-width:900px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.meta-row{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  font-size:13px;color:var(--muted);
  padding-top:16px;
  border-top:1px solid var(--line);
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#c8bfb2;display:inline-block}
.meta-row .cat-tag{
  display:inline-flex;align-items:center;
  padding:3px 12px;border-radius:var(--r-pill);
  background:var(--bg-2);color:var(--ink-900);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}

/* ============ 文章主体网格 ============ */
.article-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:36px;
  padding:40px 0 0;
}
@media (min-width:1400px){
  .article-grid{grid-template-columns:minmax(0,1fr) 320px;gap:48px}
}

.article-main{min-width:0}
.rich-text{font-size:16px;line-height:1.9;color:var(--text)}
.rich-text>*:first-child{margin-top:0}
.rich-text p{margin:0 0 18px}
.rich-text h2{
  font-size:24px;line-height:1.45;font-weight:700;
  margin:40px 0 12px;
}
.rich-text h2::after{
  content:"";display:block;width:56px;height:3px;border-radius:2px;
  background:var(--brand-grad);margin-top:10px;
}
.rich-text h3{font-size:20px;line-height:1.5;font-weight:600;margin:32px 0 10px}
.rich-text h4{font-size:18px;line-height:1.5;font-weight:600;margin:24px 0 8px}
.rich-text ul,.rich-text ol{margin:0 0 18px}
.rich-text ul li{position:relative;padding-left:20px;margin-bottom:8px;color:#3d372f}
.rich-text ul li::before{
  content:"";position:absolute;left:2px;top:12px;
  width:7px;height:7px;border-radius:50%;background:var(--brand-grad);
}
.rich-text ol{counter-reset:item}
.rich-text ol li{position:relative;padding-left:30px;margin-bottom:8px;counter-increment:item;color:#3d372f}
.rich-text ol li::before{
  content:counter(item);
  position:absolute;left:0;top:3px;
  width:20px;height:20px;border-radius:6px;
  background:var(--bg-2);color:var(--brand-1);
  font-size:12px;font-weight:700;line-height:20px;text-align:center;
}
.rich-text blockquote{
  position:relative;
  margin:22px 0;
  padding:16px 20px 16px 24px;
  background:var(--bg-2);
  border-radius:14px;
  color:#3d372f;
}
.rich-text blockquote::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;
  border-radius:0 4px 4px 0;background:var(--brand-grad);
}
.rich-text blockquote p:last-child{margin-bottom:0}
.rich-text img{width:100%;height:auto;border-radius:var(--r-md);margin:18px 0;box-shadow:var(--sh-1)}
.rich-text figure{margin:22px 0}
.rich-text figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:-6px}
.rich-text code{
  background:var(--bg-2);color:var(--brand-1);
  padding:2px 7px;border-radius:6px;font-size:14px;
  font-family:ui-monospace,Menlo,Consolas,monospace;
}
.rich-text pre{
  background:var(--ink-900);color:#e6f2ef;
  padding:18px 20px;border-radius:12px;
  overflow-x:auto;margin:0 0 20px;
  font-size:14px;line-height:1.7;
  font-family:ui-monospace,Menlo,Consolas,monospace;
}
.rich-text pre code{background:none;color:inherit;padding:0}
.rich-text hr{
  border:0;height:4px;width:80px;margin:36px auto;
  border-radius:2px;background:var(--brand-grad);
}
.rich-text table{width:100%;border-collapse:collapse;margin:0 0 22px;font-size:15px}
.rich-text th,.rich-text td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left}
.rich-text th{background:var(--bg-2);font-weight:600;color:var(--ink-900)}
.rich-text a{color:var(--brand-1);border-bottom:1px solid rgba(219,58,34,.35)}
.rich-text a:hover{border-bottom-color:var(--brand-1)}

/* ============ 空态 ============ */
.empty-state{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:64px 24px;text-align:center;box-shadow:var(--sh-1);
}
.empty-state i{font-size:48px;color:#c8bfb2;margin-bottom:16px;display:block}
.empty-state p{margin:0 0 22px;color:var(--muted);font-size:16px}

/* ============ 标签组 ============ */
.tag-block{margin:48px 0 0;padding-top:26px;border-top:1px solid var(--line)}
.tag-block h4{font-size:14px;color:var(--muted);font-weight:600;margin-bottom:12px;letter-spacing:.04em}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.tag-chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 16px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);
  font-size:13px;font-weight:600;color:var(--ink-900);
  letter-spacing:.02em;
  transition:var(--t);
}
.tag-chip:hover{border-color:var(--brand-1);color:var(--brand-1);transform:translateY(-2px)}

/* ============ 上下篇 ============ */
.post-nav{display:grid;grid-template-columns:1fr;gap:14px;margin-top:26px}
@media (min-width:640px){ .post-nav{grid-template-columns:1fr 1fr} }
.post-nav a{
  display:flex;align-items:center;gap:14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px 20px;
  color:var(--text);
  transition:var(--t);
}
.post-nav a:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#dcd3c6;color:var(--text)}
.post-nav i{font-size:16px;color:var(--brand-1);flex:0 0 auto}
.post-nav .pn-label{display:block;font-size:12px;color:var(--muted);margin-bottom:2px;letter-spacing:.04em}
.post-nav .pn-title{
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
  font-size:15px;font-weight:600;
}
.post-nav .pn-next{flex-direction:row-reverse;text-align:right}

/* ============ 相关推荐 ============ */
.related{margin-top:56px}
.block-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.block-head h2{font-size:26px;line-height:1.3}
.block-head .sub{font-size:14px;color:var(--muted);margin:6px 0 0}
.related-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media (min-width:640px){ .related-grid{grid-template-columns:repeat(2,1fr)} }
@media (min-width:1024px){ .related-grid{grid-template-columns:repeat(3,1fr)} }
.card{
  display:flex;flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:16px;
  box-shadow:var(--sh-1);
  color:var(--text);
  transition:var(--t);
  height:100%;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);color:var(--text)}
.card-cover{
  position:relative;
  aspect-ratio:16/9;
  border-radius:12px;
  overflow:hidden;
  background:var(--bg-2);
  margin-bottom:14px;
}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.card:hover .card-cover img{transform:scale(1.05)}
.card-cover .cat{
  position:absolute;left:10px;top:10px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(14,59,54,.86);color:var(--lime);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.card h3{
  font-size:17px;line-height:1.5;font-weight:600;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card p{
  font-size:14px;line-height:1.75;color:var(--muted);margin:0 0 14px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;padding-top:12px;border-top:1px dashed var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.card-foot .read{color:var(--brand-1);font-weight:600}

.article-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

/* ============ 侧栏 ============ */
.article-side{display:none}
@media (min-width:1400px){ .article-side{display:block} }
.side-stack{position:sticky;top:24px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);padding:20px;box-shadow:var(--sh-1);
}
.side-card h3{
  font-size:16px;font-weight:700;margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.side-card h3::before{
  content:"";width:4px;height:16px;border-radius:2px;background:var(--brand-grad);display:inline-block;
}
.toc a{
  display:block;padding:8px 12px;border-radius:10px;
  font-size:14px;color:var(--muted);
  border-left:2px solid transparent;
  transition:var(--t);
}
.toc a:hover{background:var(--bg-2);color:var(--text)}
.toc a.current{color:var(--brand-1);font-weight:600;background:rgba(219,58,34,.07);border-left-color:var(--brand-1)}
.hot-list li{padding:12px 0;border-bottom:1px dashed var(--line)}
.hot-list li:last-child{border-bottom:0;padding-bottom:0}
.hot-list li:first-child{padding-top:0}
.hot-list a{display:block;font-size:14px;line-height:1.6;color:var(--text);font-weight:500}
.hot-list a:hover{color:var(--brand-1)}
.hot-list .hot-meta{display:block;font-size:12px;color:var(--muted);margin-top:5px}
.side-cta{
  background:var(--ink-900);
  border-radius:var(--r-md);
  padding:22px 20px;
  color:rgba(255,255,255,.82);
  position:relative;overflow:hidden;
}
.side-cta::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:32px 32px;pointer-events:none;
}
.side-cta h3{color:#fff;font-size:17px;margin-bottom:8px;position:relative;z-index:1}
.side-cta h3::before{display:none}
.side-cta p{font-size:13px;line-height:1.75;color:rgba(255,255,255,.78);margin:0 0 16px;position:relative;z-index:1}
.side-cta .btn{position:relative;z-index:1;width:100%}

/* ============ 深色 CTA 带 ============ */
.cta-band{
  margin-top:88px;
  background:var(--ink-900);
  color:#fff;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:40px 40px;
  pointer-events:none;
}
.cta-inner{
  position:relative;z-index:1;
  padding:56px 24px;
  display:flex;flex-direction:column;gap:24px;
}
@media (min-width:900px){
  .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;padding:64px 24px}
}
.cta-inner h2{color:#fff;font-size:28px;line-height:1.35;margin-bottom:8px}
.cta-inner p{color:rgba(255,255,255,.78);margin:0;font-size:15px;max-width:620px}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:0;
  background:var(--ink-900);
  color:rgba(255,255,255,.78);
  padding:56px 0 28px;
}
.footer-top{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  padding-bottom:36px;
  border-bottom:1px solid rgba(255,255,255,.14);
}
@media (min-width:768px){ .footer-top{grid-template-columns:repeat(2,1fr)} }
@media (min-width:1024px){ .footer-top{grid-template-columns:repeat(4,1fr);gap:24px} }
.footer-brand .fb-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .fb-logo strong{color:#fff;font-size:16px;font-weight:700}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.78);margin:0}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.78);transition:var(--t)}
.footer-col a:hover{color:var(--lime);transform:translateX(2px)}
.contact-line{font-size:14px;line-height:2;color:rgba(255,255,255,.78);margin:0}
.contact-line b{color:#fff;font-variant-numeric:tabular-nums}
.footer-bottom{
  display:flex;flex-direction:column;gap:8px;
  padding-top:22px;
  font-size:13px;color:rgba(255,255,255,.60);
}
@media (min-width:640px){
  .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  h1{font-size:30px}
  h2{font-size:26px}
  .article-hero{padding:12px 0 26px}
  .article-hero h1{font-size:28px;margin:10px 0 14px}
  .article-grid{padding:28px 0 0;gap:28px}
  .rich-text h2{font-size:21px;margin-top:32px}
  .rich-text h3{font-size:18px;margin-top:26px}
  .cta-band{margin-top:56px}
  .cta-inner h2{font-size:22px}
  .related{margin-top:44px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .article-hero h1{font-size:24px}
  .btn{width:100%}
  .article-actions .btn,
  .article-actions .btn-line{width:100%}
  .card-foot{font-size:12px}
  .breadcrumb .cur{max-width:180px}
}

/* roulang page: category2 */
:root{
  --grad-main:linear-gradient(135deg,#DB3A22 0%,#F97C1F 100%);
  --ink-900:#0E3B36;
  --ink-700:#14544C;
  --lime:#CBF24D;
  --bg:#F7F4EF;
  --surface:#FFFFFF;
  --surface-2:#F1ECE4;
  --line:#E6DFD4;
  --text:#23201D;
  --text-2:#6E655C;
  --ok:#1F8A6B;
  --warn:#C9861A;
  --err:#C0392B;
  --r-xs:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,59,54,.06),0 10px 28px rgba(14,59,54,.07);
  --sh-2:0 6px 14px rgba(14,59,54,.10),0 20px 44px rgba(14,59,54,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:200ms cubic-bezier(.2,.7,.3,1);
  --side-w:240px;
  --pad-y:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{letter-spacing:-.02em;color:var(--text)}
button{font:inherit;color:inherit}
input,textarea,select{font:inherit}
:focus-visible{outline:3px solid rgba(219,58,34,.30);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.main-wrap{padding-left:var(--side-w);min-height:100vh}
.section{padding:var(--pad-y) 0}

/* ---------- 侧栏导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:var(--surface);border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:0 16px 22px;z-index:60;
}
.brand{height:88px;display:flex;align-items:center;gap:12px;text-decoration:none}
.brand-logo{
  width:40px;height:40px;flex:0 0 auto;border-radius:var(--r-xs);
  background-image:var(--grad-main);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:800;letter-spacing:0;
}
.brand-text strong{display:block;font-size:16px;font-weight:700;line-height:1.3;letter-spacing:-.02em;color:var(--text)}
.brand-text span{display:block;font-size:12px;color:var(--text-2);line-height:1.5}
.side-menu{display:flex;flex-direction:column;gap:6px;margin-top:4px}
.side-link{
  position:relative;height:44px;display:flex;align-items:center;gap:10px;
  padding:12px 16px;border-radius:12px;font-size:15px;font-weight:500;
  color:var(--text-2);transition:var(--t);
}
.side-link i{width:18px;text-align:center;font-size:15px}
.side-link:hover{background:rgba(219,58,34,.07);color:#DB3A22}
.side-link.active{color:#DB3A22;background:rgba(219,58,34,.06);font-weight:700}
.side-link.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:3px;background-image:var(--grad-main);
}
.side-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line)}
.side-foot h4{font-size:13px;font-weight:600;color:var(--text-2);letter-spacing:.02em;margin-bottom:10px}
.side-foot .side-btn{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:44px;border-radius:var(--r-pill);border:1.5px solid var(--ink-700);
  color:var(--ink-700);font-size:14px;font-weight:600;transition:var(--t);
}
.side-foot .side-btn:hover{background:var(--ink-900);border-color:var(--ink-900);color:#fff}
.side-foot p{margin-top:12px;font-size:13px;line-height:1.9;color:var(--text-2)}
.side-foot p b{color:var(--text);font-weight:600}

/* ---------- 移动顶部栏与抽屉 ---------- */
.topbar{
  display:none;position:sticky;top:0;z-index:70;height:64px;
  align-items:center;justify-content:space-between;gap:12px;
  padding:0 16px;background:rgba(255,255,255,.95);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
}
.topbar-brand{display:flex;align-items:center;gap:10px;min-width:0}
.topbar-brand strong{font-size:15px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hamburger{
  width:44px;height:44px;flex:0 0 auto;border:1px solid var(--line);background:#fff;
  border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:17px;color:var(--ink-900);cursor:pointer;transition:var(--t);
}
.hamburger:hover{border-color:#DB3A22;color:#DB3A22}
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,59,54,.55);
  opacity:0;visibility:hidden;transition:var(--t);z-index:80;
}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84%;max-width:360px;
  background:#fff;z-index:90;display:flex;flex-direction:column;
  padding:18px 18px 24px;transform:translateX(100%);
  transition:transform 240ms var(--ease);box-shadow:-20px 0 44px rgba(14,59,54,.14);
}
body.drawer-open .drawer{transform:none}
body.drawer-open .drawer-mask{opacity:1;visibility:visible}
body.drawer-open{overflow:hidden}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-head .fb-logo{display:flex;align-items:center;gap:10px;min-width:0}
.drawer-head strong{font-size:15px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.drawer-close{
  width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:12px;
  display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--ink-900);
}
.drawer-menu{display:flex;flex-direction:column;gap:4px;margin-top:14px}
.drawer-menu a{
  height:52px;display:flex;align-items:center;gap:12px;padding:0 14px;
  border-radius:12px;font-size:15px;color:var(--text-2);transition:var(--t);
}
.drawer-menu a i{width:20px;text-align:center}
.drawer-menu a.active{color:#DB3A22;background:rgba(219,58,34,.07);font-weight:700}
.drawer-cta{margin-top:auto;width:100%}

/* ---------- 按钮 / 徽章 / 标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:12px 28px;border-radius:var(--r-pill);
  font-size:16px;font-weight:600;border:0;cursor:pointer;
  transition:var(--t);white-space:nowrap;
}
.btn-primary{
  background-image:var(--grad-main);color:#fff;
  box-shadow:0 10px 22px rgba(219,58,34,.26);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 14px 28px rgba(219,58,34,.30)}
.btn-ghost{background:transparent;border:1.5px solid var(--ink-700);color:var(--ink-700)}
.btn-ghost:hover{background:var(--ink-900);border-color:var(--ink-900);color:#fff;transform:translateY(-2px)}
.btn-on-dark{background:transparent;border:1.5px solid rgba(255,255,255,.45);color:#fff}
.btn-on-dark:hover{background:#fff;border-color:#fff;color:var(--ink-900);transform:translateY(-2px)}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  color:#DB3A22;font-weight:600;font-size:15px;
  border-bottom:1px solid rgba(219,58,34,.35);padding-bottom:2px;transition:var(--t);
}
.btn-link:hover{color:#B92C18;border-color:#B92C18;gap:10px}
.badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:9px 16px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;line-height:1.2;
}
.badge-dark{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.16);color:rgba(255,255,255,.78)}
.badge-dark b{color:var(--lime);font-size:20px;font-weight:800}
.badge-light{background:var(--surface-2);border:1px solid var(--line);color:var(--ink-900)}
.badge-light b{color:#DB3A22;font-size:20px;font-weight:800}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:var(--surface-2);color:var(--ink-700);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.tag-lime{background:rgba(203,242,77,.28);color:#3E5312}

/* ---------- Hero ---------- */
.hero-dark{
  position:relative;overflow:hidden;color:#fff;
  background-image:linear-gradient(120deg,#0E3B36 0%,#14544C 58%,#7A2A16 100%);
}
.hero-dark::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:48px 48px;
}
.hero-dark .container{position:relative;z-index:2}
.hero-grid{
  display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
  padding:44px 0 80px;
}
.breadcrumb{
  display:flex;align-items:center;gap:10px;height:40px;
  font-size:13px;color:rgba(255,255,255,.70);flex-wrap:wrap;
}
.breadcrumb a{transition:var(--t)}
.breadcrumb a:hover{color:var(--lime)}
.breadcrumb .sep{width:1px;height:12px;background:rgba(255,255,255,.28)}
.breadcrumb .current{color:#F97C1F;font-weight:600}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(203,242,77,.14);color:var(--lime);
  font-size:13px;font-weight:600;letter-spacing:.02em;margin-bottom:20px;
}
.hero-copy h1{
  font-size:44px;line-height:1.18;font-weight:800;color:#fff;
  letter-spacing:-.02em;
}
.hero-sub{
  margin-top:20px;max-width:560px;
  font-size:16px;line-height:1.85;color:rgba(255,255,255,.78);
}
.hero-actions{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.badge-row{display:flex;gap:12px;margin-top:36px;flex-wrap:wrap}
.hero-visual{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid rgba(255,255,255,.14);min-height:340px;
  background:linear-gradient(135deg,rgba(203,242,77,.16),rgba(255,255,255,.05));
  box-shadow:0 24px 60px rgba(0,0,0,.28);
}
.hero-visual img{width:100%;height:100%;min-height:340px;object-fit:cover;opacity:.62}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(14,59,54,.55) 0%,rgba(219,58,34,.30) 100%);
}
.hero-visual .hero-visual-note{
  position:absolute;left:20px;right:20px;bottom:20px;z-index:3;
  background:rgba(14,59,54,.72);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-md);padding:14px 16px;
  font-size:13px;line-height:1.7;color:rgba(255,255,255,.82);
}
.hero-visual .hero-visual-note b{color:var(--lime)}

/* ---------- 板块标题 ---------- */
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{
  position:relative;padding-left:18px;
  font-size:32px;line-height:1.3;font-weight:700;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:6px;
  border-radius:3px;background-image:var(--grad-main);
}
.section-lead{
  margin-top:16px;padding-left:18px;
  font-size:15px;line-height:1.8;color:var(--text-2);max-width:700px;
}
.section-soft{background:var(--surface-2)}

/* ---------- 终端卡片 ---------- */
.device-grid{margin-bottom:-24px}
.device-grid > .cell{margin-bottom:24px}
.device-card{
  height:100%;display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:28px;
  box-shadow:var(--sh-1);transition:var(--t);
}
.device-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D9CFC2}
.device-icon{
  width:48px;height:48px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(20,84,76,.08);color:var(--ink-900);
  font-size:20px;margin-bottom:18px;
}
.device-card h3{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:10px}
.device-card p{font-size:15px;line-height:1.8;color:var(--text-2);flex:1}
.device-card .tag{margin-top:18px;align-self:flex-start}
.device-card .btn-link{margin-top:18px;align-self:flex-start}
.device-card.dashed{
  background:linear-gradient(150deg,rgba(203,242,77,.20),rgba(249,124,31,.10));
  border-style:dashed;border-color:#D6CBB8;
}

/* ---------- 时间线 ---------- */
.timeline{position:relative;margin-top:12px}
.timeline::before{
  content:"";position:absolute;left:50%;top:10px;bottom:10px;width:2px;
  transform:translateX(-50%);
  background:linear-gradient(180deg,rgba(219,58,34,.55),rgba(249,124,31,.22));
}
.tl-item{
  display:grid;grid-template-columns:1fr 96px 1fr;
  align-items:center;
}
.tl-item + .tl-item{margin-top:28px}
.tl-node{
  grid-column:2;grid-row:1;justify-self:center;
  width:56px;height:56px;border-radius:50%;
  background-image:var(--grad-main);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:800;letter-spacing:.02em;
  box-shadow:0 8px 20px rgba(219,58,34,.32);
  border:4px solid var(--bg);
}
.tl-card{
  grid-column:1;grid-row:1;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:28px;
  box-shadow:var(--sh-1);transition:var(--t);
}
.tl-item:nth-child(even) .tl-card{grid-column:3}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.tl-card h3{font-size:22px;line-height:1.4;font-weight:600;margin-bottom:10px}
.tl-card p{font-size:15px;line-height:1.85;color:var(--text-2)}
.tl-card .tag{margin-top:16px}

/* ---------- 引用大卡 ---------- */
.quote-card{
  position:relative;background:var(--surface-2);
  border:1px solid var(--line);border-radius:var(--r-lg);
  padding:40px 40px 40px 48px;
  display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
}
.quote-card::before{
  content:"";position:absolute;left:0;top:44px;bottom:44px;width:4px;
  border-radius:0 4px 4px 0;background-image:var(--grad-main);
}
.quote-text{font-size:20px;line-height:1.75;font-weight:600;color:var(--text)}
.quote-meta{display:flex;align-items:center;gap:14px;margin-top:22px}
.quote-avatar{
  width:40px;height:40px;flex:0 0 auto;border-radius:50%;
  background-image:var(--grad-main);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;
}
.quote-meta strong{display:block;font-size:15px;font-weight:600}
.quote-meta span{display:block;font-size:13px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px}
.faq-item{
  position:relative;background:var(--surface);
  border:1px solid var(--line);border-radius:14px;
  margin-bottom:14px;overflow:hidden;transition:var(--t);
}
.faq-item[open]{box-shadow:var(--sh-1);border-color:#DCD2C4}
.faq-item[open]::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:4px;
  border-radius:0 4px 4px 0;background-image:var(--grad-main);
}
.faq-q{
  list-style:none;min-height:56px;display:flex;align-items:center;
  justify-content:space-between;gap:16px;padding:16px 20px;
  font-size:17px;font-weight:600;line-height:1.6;cursor:pointer;
}
.faq-q::-webkit-details-marker{display:none}
.faq-icon{
  width:30px;height:30px;flex:0 0 auto;border-radius:50%;
  background:var(--surface-2);color:var(--ink-900);
  display:flex;align-items:center;justify-content:center;font-size:13px;
  transition:transform 240ms var(--ease),background var(--t);
}
.faq-item[open] .faq-icon{transform:rotate(180deg);background:rgba(219,58,34,.10);color:#DB3A22}
.faq-a{padding:0 20px 20px;font-size:16px;line-height:1.85;color:var(--text-2)}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink-900);
  color:#fff;padding:56px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:44px 44px;
}
.cta-inner{
  position:relative;z-index:2;display:flex;align-items:center;
  justify-content:space-between;gap:32px;
}
.cta-inner h2{font-size:28px;line-height:1.35;font-weight:700;color:#fff;max-width:640px}
.cta-inner p{margin-top:12px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.78);max-width:560px}
.cta-inner .btn{flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.78);padding:56px 0 28px}
.footer-top{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.fb-logo{display:flex;align-items:center;gap:10px}
.fb-logo strong{color:#fff;font-size:16px;font-weight:700;letter-spacing:-.02em}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.85}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.78);display:inline-block;transition:var(--t)}
.footer-col a:hover{color:var(--lime);transform:translateX(2px)}
.contact-line{font-size:14px;line-height:2}
.contact-line b{color:#fff;font-weight:600}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.62);
}

/* ---------- 响应式 ---------- */
@media (min-width:1440px){
  :root{--side-w:264px}
  .container{max-width:1280px}
}
@media (max-width:1023px){
  :root{--pad-y:72px}
  .side-nav{display:none}
  .topbar{display:flex}
  .main-wrap{padding-left:0}
  .hero-grid{grid-template-columns:1fr;gap:32px;padding:8px 0 64px}
  .hero-visual{min-height:260px}
  .hero-visual img{min-height:260px}
  .hero-copy h1{font-size:34px}
  .timeline::before{left:28px;transform:none}
  .tl-item{grid-template-columns:56px 1fr;gap:18px;align-items:flex-start}
  .tl-node{grid-column:1;grid-row:1;justify-self:start;width:56px;height:56px}
  .tl-card{grid-column:2 !important;grid-row:1}
  .quote-card{grid-template-columns:1fr;padding:32px 28px 32px 34px}
  .quote-card::before{top:32px;bottom:auto;height:calc(100% - 64px)}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .footer-top{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  :root{--pad-y:56px}
  .container{padding:0 16px}
  .section-head{margin-bottom:32px}
  .section-head h2{font-size:24px;padding-left:14px}
  .section-head h2::before{width:5px;top:7px;bottom:7px}
  .section-lead{padding-left:14px;font-size:14px}
  .hero-copy h1{font-size:30px}
  .hero-sub{font-size:15px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .badge-row{gap:10px}
  .badge-dark,.badge-light{font-size:12px}
  .tl-card h3{font-size:19px}
  .device-card{padding:20px}
  .quote-text{font-size:17px}
  .cta-inner h2{font-size:22px}
  .cta-inner .btn{width:100%}
  .footer-top{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:8px}
  .faq-q{font-size:16px;padding:14px 16px}
  .faq-a{padding:0 16px 18px;font-size:15px}
}

/* roulang page: category1 */
:root{
  --c-red:#DB3A22;
  --c-orange:#F97C1F;
  --grad:linear-gradient(135deg,#DB3A22 0%,#F97C1F 100%);
  --grad-135:linear-gradient(135deg,#DB3A22 0%,#F97C1F 100%);
  --ink:#0E3B36;
  --ink-2:#14544C;
  --lime:#CBF24D;
  --bg:#F7F4EF;
  --surface:#FFFFFF;
  --surface-2:#F1ECE4;
  --line:#E6DFD4;
  --text:#23201D;
  --text-2:#6E655C;
  --white:#FFFFFF;
  --ok:#1F8A6B;
  --warn:#C9861A;
  --err:#C0392B;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,59,54,.06),0 10px 28px rgba(14,59,54,.07);
  --sh-2:0 6px 14px rgba(14,59,54,.10),0 20px 44px rgba(14,59,54,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --side:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,h5,p,ul,ol,figure{margin:0}
ul,ol{list-style:none;padding:0}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--c-red)}
img{max-width:100%;display:block;border:0;height:auto}
button{
  appearance:none;-webkit-appearance:none;background:none;border:0;margin:0;padding:0;
  font:inherit;color:inherit;line-height:inherit;border-radius:0;cursor:pointer;
}
button::-moz-focus-inner{border:0;padding:0}
:focus-visible{outline:3px solid rgba(219,58,34,.30);outline-offset:2px;border-radius:8px}
.num,.badge b,.step::before,.price-num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
h1,h2,h3,h4{letter-spacing:-.02em;line-height:1.3}
h1{font-size:44px;line-height:1.18;font-weight:800}
h2{font-size:32px;font-weight:700}
h3{font-size:22px;font-weight:600}
h4{font-size:18px;font-weight:600}
p{font-size:16px;line-height:1.85}

/* ---------- 侧边导航 ---------- */
.sidebar{
  position:fixed;left:0;top:0;width:var(--side);height:100vh;height:100dvh;
  background:var(--surface);border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:60;
}
.brand{
  height:88px;flex:none;display:flex;align-items:center;gap:12px;
  padding:0 20px;border-bottom:1px solid var(--line);
}
.brand:hover{color:inherit}
.brand-logo{
  width:40px;height:40px;flex:none;border-radius:12px;background:var(--grad-135);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:18px;letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-text strong{font-size:16px;font-weight:700;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-text span{font-size:12px;color:var(--text-2);letter-spacing:.02em}
.side-menu{
  flex:1 1 auto;overflow-y:auto;padding:16px 12px;
  display:flex;flex-direction:column;gap:4px;
}
.side-link{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:12px 16px;border-radius:12px;
  font-size:15px;color:var(--text-2);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.side-link i{width:18px;text-align:center;font-size:14px;color:var(--ink-2);transition:color .2s var(--ease)}
.side-link:hover{background:rgba(219,58,34,.07);color:var(--c-red)}
.side-link:hover i{color:var(--c-red)}
.side-link.active{background:rgba(219,58,34,.08);color:var(--c-red);font-weight:600}
.side-link.active i{color:var(--c-red)}
.side-link.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:0 3px 3px 0;
  background:var(--grad-135);
}
.side-foot{flex:none;padding:16px;border-top:1px solid var(--line)}
.side-contact{margin-top:14px;font-size:13px;line-height:1.9;color:var(--text-2)}
.side-contact b{color:var(--ink-2);font-variant-numeric:tabular-nums}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:12px 28px;border-radius:var(--r-pill);
  font-size:16px;font-weight:600;line-height:1;
  border:1.5px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease),filter .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--grad-135);color:#fff;box-shadow:0 6px 16px rgba(219,58,34,.22)}
.btn-primary:hover{color:#fff;filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 10px 22px rgba(219,58,34,.28)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-ghost{background:transparent;border-color:var(--ink-2);color:var(--ink-2)}
.btn-ghost:hover{background:var(--ink-2);color:#fff;transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-outline-light:hover{background:#fff;color:var(--ink);transform:translateY(-2px)}
.btn-block{width:100%}
.link-more{color:var(--c-red);font-weight:600;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.link-more:hover{font-weight:700}
.link-more i{font-size:12px;transition:transform .2s var(--ease)}
.link-more:hover i{transform:translateX(3px)}

/* ---------- 主体框架 ---------- */
.page-shell{padding-left:0;padding-top:64px;min-height:100vh;display:flex;flex-direction:column}
.page-shell main{flex:1 1 auto}
.titlebar{
  height:64px;background:rgba(255,255,255,.92);
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:40;
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.titlebar .container{height:100%;display:flex;align-items:center}
.breadcrumb{font-size:13px;color:var(--text-2);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--c-red)}
.breadcrumb .sep{color:var(--line);font-weight:700}
.breadcrumb .current{color:var(--c-red);font-weight:600}

/* ---------- 分区 ---------- */
.section{padding:88px 0}
.section-tight{padding:72px 0}
.section-alt{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head .bar{width:64px;height:4px;border-radius:2px;background:var(--grad-135);margin-bottom:20px}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--text-2);font-size:16px}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.section-head-row .section-head{margin-bottom:0}

/* ---------- Hero ---------- */
.hero-light{padding:64px 0 80px;background:var(--bg);position:relative;overflow:hidden}
.hero-light::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(219,58,34,.07),rgba(219,58,34,0) 70%);pointer-events:none;
}
.hero-inner{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;position:relative;z-index:1}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.02em;color:var(--ink-2);
  background:var(--surface-2);border:1px solid var(--line);
  padding:6px 14px;border-radius:var(--r-pill);margin-bottom:20px;
}
.eyebrow i{color:var(--c-red);font-size:12px}
.hero-inner h1{margin-bottom:18px}
.hero-lead{font-size:17px;line-height:1.85;color:var(--text-2);max-width:620px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-1)}

/* ---------- 数据徽章 ---------- */
.badges{display:flex;flex-wrap:wrap;gap:12px}
.badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:8px 16px;border-radius:var(--r-pill);font-size:12px;font-weight:600;letter-spacing:.02em;
  line-height:1.3;
}
.badge b{font-size:20px;font-weight:800;line-height:1}
.badge-dark{background:var(--ink);color:rgba(255,255,255,.78)}
.badge-dark b{color:var(--lime)}
.badge-light{background:var(--surface-2);color:var(--ink-2);border:1px solid var(--line)}
.badge-light b{color:var(--c-red)}
.badge-mini{padding:6px 12px;font-size:12px}
.badge-mini b{font-size:15px}

/* ---------- 功能矩阵 ---------- */
.matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.fcard{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;gap:14px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.fcard:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(219,58,34,.24)}
.fcard:nth-child(1){min-height:312px}
.fcard:nth-child(2){min-height:252px}
.fcard:nth-child(3){min-height:284px}
.fcard:nth-child(4){min-height:268px}
.fcard:nth-child(5){min-height:320px}
.fcard:nth-child(6){min-height:240px}
.f-icon{
  width:46px;height:46px;border-radius:12px;flex:none;
  background:rgba(20,84,76,.08);color:var(--ink-2);
  display:flex;align-items:center;justify-content:center;font-size:18px;
}
.fcard h3{font-size:18px;line-height:1.45}
.fcard ul{display:flex;flex-direction:column;gap:8px}
.fcard ul li{position:relative;padding-left:20px;font-size:15px;line-height:1.75;color:var(--text-2)}
.fcard ul li::before{
  content:"✓";position:absolute;left:0;top:0;color:var(--ok);font-size:13px;font-weight:700;
}
.fcard .f-badge{margin-top:auto;padding-top:6px}

/* ---------- 对照带 ---------- */
.compare{display:flex;flex-direction:column;gap:12px;margin-top:44px}
.compare-row{
  display:grid;grid-template-columns:232px 48px 1fr;gap:20px;align-items:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px 24px;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.compare-row:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(20,84,76,.28)}
.c-name{font-size:17px;font-weight:600;color:var(--text)}
.c-check{
  width:34px;height:34px;border-radius:50%;background:var(--grad-135);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:13px;
}
.c-desc{font-size:15px;color:var(--text-2);line-height:1.75}

/* ---------- 办理流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{
  position:relative;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:30px 24px 26px;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.step::before{
  content:attr(data-no);position:absolute;right:14px;top:2px;
  font-size:60px;font-weight:800;line-height:1;color:rgba(14,59,54,.06);
}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:15px;color:var(--text-2);line-height:1.75}

/* ---------- 安全区 ---------- */
.safety-grid{display:grid;grid-template-columns:5fr 6fr;gap:48px;align-items:center}
.safety-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-1)}
.check-list{display:flex;flex-direction:column;gap:14px;margin-top:26px}
.check-list li{position:relative;padding-left:32px;font-size:16px;color:var(--text)}
.check-list li::before{
  content:"✓";position:absolute;left:0;top:2px;width:20px;height:20px;border-radius:50%;
  background:rgba(31,138,107,.12);color:var(--ok);font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.check-list li span{display:block;font-size:14px;color:var(--text-2);line-height:1.7}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.faq-item:hover{border-color:rgba(219,58,34,.28)}
.faq-item.open{border-color:rgba(219,58,34,.36);box-shadow:var(--sh-1)}
.faq-q{
  position:relative;width:100%;min-height:56px;padding:14px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-q::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:4px;border-radius:0 4px 4px 0;
  background:var(--grad-135);opacity:0;transition:opacity .2s var(--ease);
}
.faq-item.open .faq-q::before{opacity:1}
.faq-q i{flex:none;color:var(--c-red);font-size:14px;transition:transform .24s var(--ease)}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a-inner{padding:0 20px 18px;font-size:16px;line-height:1.85;color:var(--text-2)}

/* ---------- CTA 带 ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--ink);color:#fff}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:48px 48px;
}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:36px;padding:60px 0}
.cta-inner h2{color:#fff;margin-bottom:10px}
.cta-inner p{color:rgba(255,255,255,.78);max-width:620px;font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:none}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.78);padding:56px 0 28px;margin-top:auto}
.footer-top{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.14);
}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.72)}
.fb-logo{display:flex;align-items:center;gap:10px}
.fb-logo strong{color:#fff;font-size:16px;font-weight:700;letter-spacing:0}
.footer-col h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{display:inline-block;font-size:14px;color:rgba(255,255,255,.78);transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-col a:hover{color:var(--lime);transform:translateX(2px)}
.contact-line{font-size:14px;line-height:2;color:rgba(255,255,255,.78)}
.contact-line b{color:#fff;font-variant-numeric:tabular-nums}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  padding-top:24px;font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- 移动端顶栏与抽屉 ---------- */
.mobile-top{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;z-index:70;
  background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  align-items:center;justify-content:space-between;padding:0 16px;
}
.mobile-brand{display:flex;align-items:center;gap:10px;min-width:0}
.mobile-brand strong{font-size:16px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hamburger{
  width:44px;height:44px;flex:none;border-radius:12px;border:1px solid var(--line);
  background:var(--surface);color:var(--ink-2);display:flex;align-items:center;justify-content:center;font-size:17px;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.hamburger:hover{background:rgba(219,58,34,.08);color:var(--c-red)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,59,54,.55);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer-mask.show{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;z-index:90;
  width:84%;max-width:360px;height:100vh;height:100dvh;
  background:var(--surface);display:flex;flex-direction:column;
  padding:16px;transform:translateX(100%);
  transition:transform .28s var(--ease);
  box-shadow:-12px 0 40px rgba(14,59,54,.18);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:8px 4px 16px;border-bottom:1px solid var(--line)}
.drawer-head strong{font-size:16px}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--ink-2);
}
.drawer-close:hover{background:rgba(219,58,34,.08);color:var(--c-red)}
.drawer-menu{flex:1 1 auto;overflow-y:auto;display:flex;flex-direction:column;gap:4px;padding:16px 0}
.drawer-link{
  display:flex;align-items:center;gap:12px;height:52px;padding:0 14px;border-radius:12px;
  font-size:16px;color:var(--text-2);
}
.drawer-link i{width:20px;text-align:center;color:var(--ink-2)}
.drawer-link:hover{background:rgba(219,58,34,.07);color:var(--c-red)}
.drawer-link.active{background:rgba(219,58,34,.08);color:var(--c-red);font-weight:600}
.drawer-link.active i{color:var(--c-red)}
.drawer-foot{flex:none;padding-top:12px;border-top:1px solid var(--line)}

/* ---------- 响应式 ---------- */
@media (min-width:1024px){
  .sidebar{display:flex}
  .mobile-top{display:none}
  .drawer,.drawer-mask{display:none}
  .page-shell{padding-left:var(--side);padding-top:0}
  .titlebar{top:0}
}
@media (min-width:1440px){
  :root{--side:264px}
  .container{max-width:1280px}
}
@media (max-width:1023px){
  .sidebar{display:none}
  .mobile-top{display:flex}
  .page-shell{padding-top:64px;padding-left:0}
  h1{font-size:34px}
  h2{font-size:28px}
}
@media (max-width:1023px) and (min-width:640px){
  .matrix{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .safety-grid{grid-template-columns:1fr;gap:32px}
  .faq-grid{grid-template-columns:1fr}
  .hero-inner{grid-template-columns:1fr;gap:32px}
  .hero-media{order:2}
  .footer-top{grid-template-columns:repeat(2,1fr);gap:32px 24px}
  .section{padding:72px 0}
}
@media (max-width:639px){
  .container{padding:0 16px}
  h1{font-size:30px}
  h2{font-size:26px}
  h3{font-size:20px}
  .section{padding:56px 0}
  .section-tight{padding:56px 0}
  .hero-light{padding:40px 0 56px}
  .hero-lead{font-size:16px}
  .hero-actions .btn{width:100%}
  .matrix{grid-template-columns:1fr}
  .fcard{min-height:0 !important;padding:22px}
  .steps{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr}
  .safety-grid{grid-template-columns:1fr;gap:28px}
  .hero-inner{grid-template-columns:1fr;gap:28px}
  .compare-row{grid-template-columns:1fr;gap:12px;padding:20px}
  .c-check{width:28px;height:28px}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:48px 0}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-top{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .badges{gap:10px}
  .badge{font-size:12px;padding:7px 14px}
  .badge b{font-size:18px}
}

/* roulang page: category3 */
:root{
  --brand-1:#DB3A22;
  --brand-2:#F97C1F;
  --grad:linear-gradient(135deg,#DB3A22 0%,#F97C1F 100%);
  --ink-900:#0E3B36;
  --ink-700:#14544C;
  --lime:#CBF24D;
  --bg:#F7F4EF;
  --card:#FFFFFF;
  --surface:#F1ECE4;
  --line:#E6DFD4;
  --text:#23201D;
  --muted:#6E655C;
  --on-dark:rgba(255,255,255,.78);
  --ok:#1F8A6B;
  --warn:#C9861A;
  --err:#C0392B;
  --r-sm:10px;
  --r-card:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,59,54,.06),0 10px 28px rgba(14,59,54,.07);
  --sh-2:0 6px 14px rgba(14,59,54,.10),0 20px 44px rgba(14,59,54,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --side-w:240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  font-feature-settings:"tnum";
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand-1);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-2);}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:-.02em;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(219,58,34,.30);border-radius:var(--r-sm);}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ===== 侧边导航 ===== */
.side-nav{
  position:fixed;left:0;top:0;bottom:0;width:var(--side-w);
  background:var(--card);border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:0 16px 20px;
  z-index:900;
  transition:transform .28s var(--ease);
}
.brand{
  display:flex;align-items:center;gap:12px;
  height:88px;flex:0 0 88px;padding-left:4px;
  border-bottom:1px solid var(--line);margin-bottom:18px;
}
.brand-logo{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background-image:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:800;letter-spacing:0;
  box-shadow:0 6px 16px rgba(219,58,34,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:-.01em;}
.brand-text small{font-size:12px;color:var(--muted);letter-spacing:.02em;}
.side-menu{display:flex;flex-direction:column;gap:4px;}
.side-link{
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 16px;border-radius:12px;
  color:var(--text);font-size:15px;font-weight:500;
  position:relative;transition:background .2s var(--ease),color .2s var(--ease);
}
.side-link i{width:18px;text-align:center;color:var(--ink-700);font-size:15px;transition:color .2s var(--ease);}
.side-link:hover{background:rgba(219,58,34,.07);color:var(--brand-1);}
.side-link:hover i{color:var(--brand-1);}
.side-link.active{
  background:rgba(219,58,34,.07);
  color:var(--brand-1);font-weight:700;
}
.side-link.active i{color:var(--brand-1);}
.side-link.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background-image:var(--grad);
}
.side-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);}
.side-contact{margin:14px 0 0;font-size:13px;line-height:1.7;color:var(--muted);}
.side-contact b{color:var(--ink-700);font-size:14px;}

/* ===== 移动顶部导航 ===== */
.topbar{
  display:none;position:fixed;left:0;right:0;top:0;height:64px;
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;
  padding:0 16px;z-index:1000;
}
.topbar-brand{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700;color:var(--text);}
.topbar-brand .brand-logo{width:34px;height:34px;flex:0 0 34px;font-size:16px;border-radius:10px;}
.burger{
  width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:12px;color:var(--ink-900);font-size:17px;
  display:flex;align-items:center;justify-content:center;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.burger:hover{background:var(--surface);border-color:var(--brand-1);color:var(--brand-1);}
.overlay{
  position:fixed;inset:0;background:rgba(14,59,54,.55);
  opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s;
  z-index:950;
}
.overlay.show{opacity:1;visibility:visible;}

/* ===== 主内容区 ===== */
.page{padding-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column;}
.page-bar{
  height:64px;display:flex;align-items:center;
  background:rgba(255,255,255,.92);backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:800;
}
.crumb{font-size:13px;color:var(--muted);line-height:40px;display:flex;align-items:center;flex-wrap:wrap;gap:8px;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand-1);}
.crumb .sep{color:#C9C0B4;}
.crumb .current{color:var(--brand-1);font-weight:600;}
main{flex:1 1 auto;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:12px 28px;border-radius:var(--r-pill);
  font-size:16px;font-weight:600;line-height:1;border:0;
  transition:transform .2s var(--ease),filter .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background-image:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(219,58,34,.24);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.06);}
.btn-ghost{background:transparent;border:1.5px solid var(--ink-700);color:var(--ink-700);}
.btn-ghost:hover{background:var(--ink-700);color:#fff;transform:translateY(-2px);}
.btn-light{background:#fff;color:var(--ink-900);}
.btn-light:hover{color:var(--brand-1);transform:translateY(-2px);}
.btn-block{width:100%;}
.btn-sm{height:42px;padding:10px 22px;font-size:14px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-1);font-size:15px;font-weight:600;
  border-bottom:1.5px solid rgba(219,58,34,.35);padding-bottom:2px;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.btn-text:hover{border-color:var(--brand-1);color:var(--brand-2);}

/* ===== 标签 / 徽章 ===== */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:var(--surface);color:var(--ink-700);
}
.tag-lime{background:rgba(203,242,77,.18);color:var(--lime);border:1px solid rgba(203,242,77,.35);}
.tag-solid{background-image:var(--grad);color:#fff;}
.stat-badge{
  display:inline-flex;align-items:baseline;gap:8px;
  padding:10px 18px;border-radius:var(--r-pill);
  background:var(--surface);color:var(--ink-900);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  border:1px solid rgba(14,59,54,.06);
}
.stat-badge b{font-size:22px;font-weight:800;color:var(--brand-1);font-variant-numeric:tabular-nums;line-height:1;}
.stat-badge.dark{background:var(--ink-900);color:var(--lime);border-color:rgba(255,255,255,.14);}
.stat-badge.dark b{color:var(--lime);}
.badge-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}

/* ===== Hero ===== */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background-color:var(--ink-900);
}
.hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.30;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(135deg,rgba(219,58,34,.88) 0%,rgba(14,59,54,.92) 62%,rgba(14,59,54,.96) 100%);
}
.hero-inner{position:relative;z-index:2;padding:64px 24px 56px;}
.hero h1{
  color:#fff;font-size:44px;line-height:1.18;font-weight:800;
  max-width:820px;margin:16px 0 18px;
}
.hero-sub{
  max-width:720px;font-size:16px;line-height:1.85;
  color:rgba(255,255,255,.80);margin:0;
}
.hero-compact .hero-inner{padding:52px 24px 48px;}
.hero-compact h1{font-size:38px;}
.hero .badge-row{margin-top:30px;}
.hero .stat-badge{background:rgba(255,255,255,.92);border-color:rgba(255,255,255,.4);color:var(--ink-900);}
.hero .stat-badge b{color:var(--brand-1);}

/* ===== 板块 ===== */
.section{padding:88px 0;}
.section-surface{background:var(--surface);}
.section-ink{background:var(--ink-900);}
.section-head{max-width:780px;margin-bottom:40px;}
.section-head .bar{display:block;width:56px;height:6px;border-radius:var(--r-pill);background-image:var(--grad);margin-bottom:18px;}
.section-head h2{font-size:32px;line-height:1.3;font-weight:700;margin-bottom:12px;}
.section-head p{margin:0;color:var(--muted);font-size:15px;line-height:1.75;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head.center .bar{margin-left:auto;margin-right:auto;}

/* ===== 案例瀑布 ===== */
.case-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:28px;align-items:start;
}
.case-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.case-card:nth-child(even){margin-top:40px;}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(219,58,34,.28);}
.case-cover{aspect-ratio:16/9;overflow:hidden;background:var(--surface);}
.case-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease);}
.case-card:hover .case-cover img{transform:scale(1.05);}
.case-body{padding:28px;}
.case-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:12px;}
.case-body h3{font-size:22px;line-height:1.4;font-weight:600;margin-bottom:10px;}
.case-body p{font-size:15px;line-height:1.8;color:var(--muted);margin:0 0 18px;}
.case-data{
  display:inline-flex;align-items:baseline;gap:8px;
  padding:8px 16px;border-radius:var(--r-pill);
  background:var(--ink-900);color:var(--lime);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.case-data b{font-size:20px;font-weight:800;color:var(--lime);font-variant-numeric:tabular-nums;line-height:1;}
.case-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:20px;padding-top:18px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}

/* ===== 徽章墙 ===== */
.badge-wall{
  display:grid;grid-template-columns:repeat(5,minmax(0,1fr));
  gap:12px;
}
.wall-item{
  background:var(--card);border:1px solid var(--line);
  border-radius:14px;padding:18px 16px;
  display:flex;flex-direction:column;gap:4px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.wall-item:hover{transform:translateY(-4px);box-shadow:var(--sh-1);border-color:rgba(219,58,34,.25);}
.wall-item b{
  font-size:22px;font-weight:800;color:var(--brand-1);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.wall-item span{font-size:13px;color:var(--muted);letter-spacing:.01em;}

/* ===== FAQ ===== */
.faq-list{max-width:920px;}
.faq-item{
  position:relative;background:var(--card);
  border:1px solid var(--line);border-radius:14px;
  margin-bottom:14px;overflow:hidden;
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background-image:var(--grad);opacity:0;transition:opacity .2s var(--ease);
}
.faq-item[open]{box-shadow:var(--sh-1);border-color:rgba(219,58,34,.24);}
.faq-item[open]::before{opacity:1;}
.faq-item summary{
  list-style:none;cursor:pointer;
  min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:16px 22px;font-size:17px;font-weight:600;color:var(--text);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-1);}
.faq-icon{
  position:relative;width:24px;height:24px;flex:0 0 24px;
  border-radius:50%;background:var(--surface);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  transform:translate(-50%,-50%);background:var(--brand-1);border-radius:2px;
}
.faq-icon::before{width:12px;height:2px;}
.faq-icon::after{width:2px;height:12px;transition:transform .24s var(--ease),opacity .24s var(--ease);}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-body{padding:0 22px 20px;font-size:16px;line-height:1.85;color:var(--muted);}
.faq-body p{margin:0 0 12px;}
.faq-body p:last-child{margin-bottom:0;}
.faq-item[open] .faq-body{animation:faqIn .24s var(--ease);}
@keyframes faqIn{from{opacity:0;transform:translateY(-6px);}to{opacity:1;transform:none;}}

/* ===== CTA 带 ===== */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink-900);border-radius:var(--r-lg);
  padding:48px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:48px 48px;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{color:#fff;font-size:28px;line-height:1.35;font-weight:700;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.78);font-size:15px;margin:0;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto;}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.5);color:#fff;}
.cta-band .btn-ghost:hover{background:#fff;color:var(--ink-900);border-color:#fff;}

/* ===== 页脚 ===== */
.site-footer{background:var(--ink-900);color:var(--on-dark);margin-top:88px;padding:56px 0 28px;}
.footer-top{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.14);
}
.footer-brand .fb-logo{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-logo{box-shadow:none;}
.footer-brand strong{color:#fff;font-size:16px;font-weight:700;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);margin:0;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;letter-spacing:0;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.78);display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease);}
.footer-col a:hover{color:var(--lime);transform:translateX(2px);}
.contact-line{font-size:14px;line-height:1.9;color:rgba(255,255,255,.78);margin:0;}
.contact-line b{color:#fff;font-size:15px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:24px;font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.7);}
.footer-bottom a:hover{color:var(--lime);}

/* ===== 响应式 ===== */
@media (min-width:1440px){
  :root{--side-w:264px;}
}
@media (max-width:1279px){
  .badge-wall{grid-template-columns:repeat(4,minmax(0,1fr));}
}
@media (max-width:1023px){
  .side-nav{transform:translateX(-100%);width:84%;max-width:360px;box-shadow:var(--sh-2);z-index:1100;padding-bottom:28px;}
  .side-nav.open{transform:translateX(0);}
  .side-link{height:52px;border-radius:12px;}
  .topbar{display:flex;}
  .page{padding-left:0;padding-top:64px;}
  .page-bar{top:64px;}
  .hero-inner{padding:48px 24px 44px;}
  .hero h1{font-size:34px;}
  .hero-compact h1{font-size:30px;}
  .section{padding:72px 0;}
  .case-grid{gap:24px;}
  .case-card:nth-child(even){margin-top:28px;}
  .badge-wall{grid-template-columns:repeat(3,minmax(0,1fr));}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px;gap:24px;}
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 24px;}
  .site-footer{margin-top:72px;}
}
@media (max-width:767px){
  .case-grid{grid-template-columns:minmax(0,1fr);gap:20px;}
  .case-card:nth-child(even){margin-top:0;}
  .badge-wall{grid-template-columns:repeat(2,minmax(0,1fr));}
  .section-head h2{font-size:26px;}
  .hero h1{font-size:28px;}
  .hero-compact h1{font-size:26px;}
  .hero-sub{font-size:15px;}
  .cta-band{padding:28px 22px;border-radius:var(--r-card);}
  .cta-band h2{font-size:22px;}
  .case-body{padding:20px;}
  .case-body h3{font-size:19px;}
  .faq-item summary{font-size:16px;padding:14px 18px;}
  .faq-body{padding:0 18px 18px;font-size:15px;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .hero-inner{padding:36px 16px 34px;}
  .page-bar{height:56px;}
  .stat-badge b{font-size:19px;}
  .stat-badge{padding:9px 15px;}
  .btn{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-top{grid-template-columns:minmax(0,1fr);}
  .badge-wall{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;}
}

/* roulang page: category4 */
:root{
  --red:#DB3A22;
  --orange:#F97C1F;
  --grad:linear-gradient(135deg,#DB3A22 0%,#F97C1F 100%);
  --ink:#0E3B36;
  --ink-2:#14544C;
  --lime:#CBF24D;
  --bg:#F7F4EF;
  --card:#FFFFFF;
  --sub:#F1ECE4;
  --line:#E6DFD4;
  --text:#23201D;
  --muted:#6E655C;
  --ok:#1F8A6B;
  --warn:#C9861A;
  --err:#C0392B;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,59,54,.06),0 10px 28px rgba(14,59,54,.07);
  --sh-2:0 6px 14px rgba(14,59,54,.10),0 20px 44px rgba(14,59,54,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --side-w:240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-md);}
a{color:var(--red);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--orange);}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;color:var(--text);}
h1{font-size:44px;line-height:1.18;font-weight:800;}
h2{font-size:32px;line-height:1.3;font-weight:700;}
h3{font-size:22px;line-height:1.4;font-weight:600;}
h4{font-size:18px;line-height:1.5;font-weight:600;}
p{margin:0 0 16px;}
ul{margin:0;padding:0;list-style:none;}
button{font:inherit;cursor:pointer;border:none;background:none;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(219,58,34,.30);border-radius:var(--r-sm);}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.container{max-width:1280px;}}

/* ---------- 左侧竖向导航 ---------- */
.side-rail{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:60;
}
.rail-brand{
  height:88px;display:flex;align-items:center;gap:12px;
  padding:0 20px;border-bottom:1px solid var(--line);
}
.brand-logo{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:var(--grad);color:#fff;font-weight:800;font-size:19px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(219,58,34,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:16px;font-weight:700;color:var(--text);letter-spacing:-.01em;}
.brand-text span{font-size:12px;color:var(--muted);letter-spacing:.02em;font-weight:600;}
.side-menu{display:flex;flex-direction:column;gap:4px;padding:18px 12px;flex:1;}
.side-link{
  display:flex;align-items:center;gap:12px;height:44px;
  padding:12px 16px;border-radius:12px;
  color:var(--muted);font-size:15px;font-weight:600;
  position:relative;transition:background .2s var(--ease),color .2s var(--ease);
}
.side-link i{width:18px;text-align:center;font-size:15px;}
.side-link:hover{background:rgba(219,58,34,.07);color:var(--red);}
.side-link.active{background:rgba(219,58,34,.06);color:var(--red);}
.side-link.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:2px;background:var(--grad);
}
.rail-foot{padding:16px 20px 22px;border-top:1px solid var(--line);}
.rail-foot .btn{width:100%;justify-content:center;}
.rail-foot p{margin:12px 0 0;font-size:13px;line-height:1.7;color:var(--muted);}
.rail-foot p b{color:var(--ink);font-size:14px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:12px 28px;border-radius:var(--r-pill);
  font-size:16px;font-weight:600;letter-spacing:.01em;
  transition:transform .2s var(--ease),filter .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  border:1.5px solid transparent;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(219,58,34,.24);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.06);}
.btn-ghost{border-color:var(--ink-2);color:var(--ink);background:transparent;}
.btn-ghost:hover{background:var(--ink);border-color:var(--ink);color:#fff;transform:translateY(-2px);}
.btn-sm{height:42px;font-size:14px;padding:10px 20px;}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--red);font-weight:600;font-size:15px;
  text-decoration:underline;text-underline-offset:4px;
}
.link-arrow:hover{font-weight:700;}

/* ---------- 页面容器 ---------- */
.main{padding-left:0;}
@media (min-width:1024px){.main{padding-left:var(--side-w);}}
.page-strip{
  height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:0 24px;background:#fff;border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:40;
}
.page-strip .strip-title{font-size:14px;font-weight:700;color:var(--ink);letter-spacing:.02em;}
.page-strip .strip-title i{color:var(--red);margin-right:8px;}
.page-strip .strip-crumb{font-size:13px;color:var(--muted);}
.page-strip .strip-crumb b{color:var(--red);font-weight:600;}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;height:40px;font-size:13px;color:var(--muted);}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--red);}
.crumb i{font-size:10px;color:var(--line);}
.crumb .now{color:var(--red);font-weight:600;}

/* ---------- Hero 极简 ---------- */
.hero-slim{padding:64px 0 56px;background:var(--bg);border-bottom:1px solid var(--line);}
.hero-slim h1{max-width:880px;}
.hero-slim .lead{
  margin:22px 0 24px;max-width:760px;font-size:17px;line-height:1.85;color:var(--muted);
}
.hero-slim .lead b{color:var(--ink);font-weight:600;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 14px;
  border-radius:var(--r-pill);background:var(--sub);color:var(--ink);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.tag i{color:var(--red);font-size:12px;}

/* ---------- 板块 ---------- */
.section{padding:88px 0;}
@media (max-width:1023px){.section{padding:72px 0;}}
@media (max-width:639px){.section{padding:56px 0;}}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  letter-spacing:.06em;color:var(--red);margin-bottom:14px;
}
.section-head .eyebrow::before{content:"";width:26px;height:3px;border-radius:2px;background:var(--grad);}
.section-head p{margin:14px 0 0;color:var(--muted);font-size:16px;}
.section-alt{background:var(--sub);}

/* ---------- 价格三档 ---------- */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.plan{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.plan-tag{
  align-self:flex-start;font-size:12px;font-weight:700;letter-spacing:.04em;
  padding:5px 12px;border-radius:var(--r-pill);background:var(--sub);color:var(--ink);
}
.plan h3{margin:16px 0 8px;font-size:22px;}
.plan .plan-desc{font-size:14px;line-height:1.75;color:var(--muted);min-height:52px;margin:0 0 20px;}
.plan-price{display:flex;align-items:baseline;gap:4px;padding-bottom:20px;border-bottom:1px dashed var(--line);}
.plan-price .cur{font-size:20px;font-weight:700;color:var(--red);}
.plan-price b{
  font-size:40px;font-weight:800;line-height:1.1;letter-spacing:-.02em;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.plan-price .per{font-size:14px;color:var(--muted);font-weight:600;}
.plan-list{margin:22px 0 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.plan-list li{display:flex;gap:10px;font-size:15px;line-height:1.7;color:var(--text);}
.plan-list li i{color:var(--ok);font-size:13px;margin-top:7px;flex:0 0 14px;}
.plan.featured{
  transform:translateY(-8px);
  border:2px solid transparent;
  background-image:linear-gradient(#fff,#fff),var(--grad);
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:var(--sh-2);
}
.plan.featured:hover{transform:translateY(-12px);}
.plan.featured .plan-tag{background:var(--grad);color:#fff;}
.plan.featured .plan-list li i{color:var(--red);}
.plans-note{
  margin-top:28px;display:flex;flex-wrap:wrap;align-items:center;gap:16px;
  padding:20px 24px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  font-size:14px;color:var(--muted);
}
.plans-note i{color:var(--red);}

/* ---------- 服务保障 ---------- */
.guards{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.guard{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px;transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.guard:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.guard .gi{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(20,84,76,.08);color:var(--ink-2);font-size:18px;margin-bottom:16px;
}
.guard h3{font-size:18px;margin-bottom:8px;}
.guard p{margin:0;font-size:14px;line-height:1.75;color:var(--muted);}

/* ---------- 服务范围清单 ---------- */
.scope-wrap{display:grid;grid-template-columns:1fr 1fr;gap:40px;}
.scope-col h4{
  font-size:16px;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:8px;
}
.scope-col h4 i{color:var(--red);font-size:14px;}
.scope-col ul{display:flex;flex-direction:column;gap:12px;}
.scope-col li{display:flex;gap:10px;font-size:15px;line-height:1.7;}
.scope-col li i{color:var(--ok);font-size:13px;margin-top:7px;flex:0 0 14px;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:920px;}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;position:relative;}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background:var(--grad);opacity:0;transition:opacity .2s var(--ease);
}
.faq-item.open::before{opacity:1;}
.faq-q{
  width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--text);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--red);}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 20px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink);border-radius:2px;
  transition:transform .24s var(--ease),background .2s var(--ease);
}
.faq-icon::before{left:0;top:9px;width:20px;height:2px;}
.faq-icon::after{left:9px;top:0;width:2px;height:20px;}
.faq-q[aria-expanded="true"] .faq-icon::after{transform:scaleY(0);}
.faq-q[aria-expanded="true"] .faq-icon::before{background:var(--red);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease);}
.faq-a .inner{padding:0 22px 20px;font-size:16px;line-height:1.85;color:var(--muted);}
.faq-a .inner p:last-child{margin-bottom:0;}

/* ---------- 深色 CTA ---------- */
.cta-band{
  background:var(--ink);
  background-image:radial-gradient(circle at 88% 20%,rgba(203,242,77,.12),transparent 46%),
                   repeating-linear-gradient(0deg,rgba(255,255,255,.05) 0 1px,transparent 1px 44px),
                   repeating-linear-gradient(90deg,rgba(255,255,255,.05) 0 1px,transparent 1px 44px);
  padding:64px 0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;}
.cta-band h2{color:#fff;font-size:30px;max-width:620px;}
.cta-band p{color:rgba(255,255,255,.78);margin:12px 0 0;font-size:15px;max-width:600px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.42);color:#fff;}
.cta-band .btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff;}
.cta-band .link-arrow{color:var(--lime);}
.cta-band .link-arrow:hover{color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.78);padding:56px 0 28px;}
.footer-top{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.fb-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.fb-logo strong{color:#fff;font-size:16px;font-weight:700;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);margin:0;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:0;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:rgba(255,255,255,.78);font-size:14px;transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block;}
.footer-col a:hover{color:var(--lime);transform:translateX(2px);}
.contact-line{font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);margin:0;}
.contact-line b{color:#fff;}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- 移动端导航 ---------- */
.mobile-bar{
  display:none;position:sticky;top:0;z-index:70;height:64px;
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);align-items:center;justify-content:space-between;
  padding:0 16px;
}
.mobile-bar .mb-brand{display:flex;align-items:center;gap:10px;}
.mobile-bar .mb-brand .brand-logo{width:34px;height:34px;flex:0 0 34px;border-radius:10px;font-size:16px;}
.mobile-bar .mb-brand strong{font-size:15px;font-weight:700;}
.mb-toggle{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--ink);font-size:17px;background:#fff;
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,59,54,.55);opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:80;
}
.drawer-mask.show{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84%;max-width:360px;background:#fff;
  transform:translateX(100%);transition:transform .28s var(--ease);z-index:90;
  display:flex;flex-direction:column;padding:20px 18px;
}
.drawer.show{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-head strong{font-size:16px;}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);color:var(--ink);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;flex:1;}
.drawer-nav a{
  display:flex;align-items:center;gap:12px;height:52px;padding:0 14px;border-radius:12px;
  color:var(--muted);font-size:15px;font-weight:600;
}
.drawer-nav a.active{background:rgba(219,58,34,.07);color:var(--red);}
.drawer-foot{padding-top:16px;border-top:1px solid var(--line);}
.drawer-foot p{font-size:13px;color:var(--muted);margin:10px 0 0;}

@media (max-width:1023px){
  .side-rail{display:none;}
  .main{padding-left:0;}
  .mobile-bar{display:flex;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .guards{grid-template-columns:repeat(2,1fr);}
  .scope-wrap{grid-template-columns:1fr;gap:32px;}
}
@media (max-width:900px){
  .plans{grid-template-columns:1fr;}
  .plan.featured{transform:none;}
  .plan.featured:hover{transform:translateY(-4px);}
}
@media (max-width:860px){
  .footer-top{grid-template-columns:1fr 1fr;}
}
@media (max-width:639px){
  h1{font-size:30px;}
  h2{font-size:25px;}
  h3{font-size:19px;}
  .container{padding:0 16px;}
  .hero-slim{padding:44px 0 40px;}
  .page-strip{padding:0 16px;}
  .page-strip .strip-crumb{display:none;}
  .plans{gap:18px;}
  .plan{padding:22px;}
  .plan-price b{font-size:34px;}
  .guards{grid-template-columns:1fr;gap:16px;}
  .guard{padding:22px;}
  .footer-top{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .btn{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
}