/* roulang page: index */
:root{
  --bg:#F7F5F2;
  --surface:#FFFFFF;
  --line:#E6E2DD;
  --primary:#2E1F4D;
  --primary-hover:#3F2C68;
  --accent:#FF7A59;
  --accent-soft:#FFF0EB;
  --support:#35D0A5;
  --support-soft:#E6F9F3;
  --ink-900:#14121A;
  --ink-700:#3A3546;
  --ink-500:#6B6577;
  --ink-300:#A9A4B4;
  --dark:#17141F;
  --dark-text:#EDEAF2;
  --dark-line:rgba(255,255,255,.10);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,18,26,.06);
  --sh-2:0 12px 32px rgba(20,18,26,.10);
  --ease:cubic-bezier(.2,.8,.2,1);
  --nav-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
svg{display:block}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:500;letter-spacing:.1em;color:var(--primary);
  background:rgba(46,31,77,.06);border-radius:var(--r-pill);padding:6px 14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--accent)}
.section-head{max-width:760px;margin-bottom:48px}
.section-head h2{
  font-size:clamp(26px,3.2vw,40px);font-weight:700;line-height:1.25;
  color:var(--ink-900);letter-spacing:-.01em;margin:16px 0 14px;
}
.section-desc{font-size:16px;color:var(--ink-500);line-height:1.8}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;flex-wrap:wrap}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 24px;border-radius:var(--r-sm);font-size:15px;font-weight:600;
  transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  border:1.5px solid transparent;white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:transparent;color:var(--ink-900);border-color:var(--ink-900)}
.btn-ghost:hover{border-color:var(--accent);background:rgba(255,122,89,.08);color:var(--primary)}
.btn-accent{background:var(--accent);color:#2A1408}
.btn-accent:hover{background:#ff8a6d;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:var(--r-pill)}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none!important}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--primary);
}
.text-link .arrow{transition:transform .2s var(--ease)}
.text-link:hover .arrow{transform:translateX(4px)}
.text-link:hover{color:var(--accent)}

/* ============ 标签 ============ */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:500;letter-spacing:.06em;
  padding:4px 12px;border-radius:var(--r-pill);line-height:1.7;
}
.tag-green{background:var(--support-soft);color:#0F7A5C}
.tag-purple{background:rgba(46,31,77,.07);color:var(--primary)}
.tag-orange{background:var(--accent-soft);color:#B3421F}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;height:var(--nav-h);
  display:flex;align-items:center;
  background:rgba(247,245,242,.82);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),backdrop-filter .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,245,242,.92);
  border-bottom-color:var(--line);
  backdrop-filter:blur(4px);
  -webkit-backdrop-filter:blur(4px);
}
.nav-wrap{display:flex;align-items:center;gap:28px;width:100%}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(140deg,var(--primary),#4B3277);
  display:flex;align-items:center;justify-content:center;
}
.logo-mark svg{width:18px;height:18px}
.logo-text{
  font-size:16px;font-weight:700;color:var(--ink-900);letter-spacing:.01em;line-height:1.2;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-700);
  padding:8px 12px;border-radius:var(--r-pill);transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--primary);background:rgba(46,31,77,.05)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--primary);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex-shrink:0}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-pill);display:flex;align-items:center;justify-content:center;
  color:var(--ink-700);border:1px solid var(--line);background:var(--surface);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{color:var(--primary);border-color:var(--primary);transform:translateY(-1px)}
.icon-btn svg{width:18px;height:18px}
.hamburger{display:none;width:40px;height:40px;border-radius:var(--r-pill);border:1px solid var(--line);background:var(--surface);align-items:center;justify-content:center}
.hamburger span{display:block;width:16px;height:2px;background:var(--ink-900);border-radius:2px;position:relative}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink-900);border-radius:2px}
.hamburger span::before{top:-5px}
.hamburger span::after{top:5px}

/* 搜索面板 */
.search-panel{
  position:fixed;top:var(--nav-h);left:0;right:0;z-index:110;
  background:var(--surface);border-bottom:1px solid var(--line);box-shadow:var(--sh-1);
  transform:translateY(-12px);opacity:0;pointer-events:none;transition:all .22s var(--ease);
}
.search-panel.is-open{transform:translateY(0);opacity:1;pointer-events:auto}
.search-inner{display:flex;gap:12px;align-items:center;padding:16px 0}
.search-inner input{
  flex:1;height:46px;border-radius:var(--r-sm);border:1.5px solid var(--line);background:var(--bg);
  padding:0 16px;font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-inner input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(46,31,77,.10)}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,18,26,.45);z-index:130;opacity:0;pointer-events:none;transition:opacity .24s var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;bottom:0;left:0;width:min(86vw,340px);z-index:140;background:var(--surface);
  transform:translateX(-102%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:22px 22px 28px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{
  width:38px;height:38px;border-radius:var(--r-pill);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--ink-700);
}
.drawer-links{display:flex;flex-direction:column;gap:6px;margin-bottom:24px}
.drawer-links a{
  padding:13px 14px;border-radius:var(--r-sm);font-size:16px;font-weight:500;color:var(--ink-900);
  border:1px solid transparent;transition:background .2s var(--ease),color .2s var(--ease);
}
.drawer-links a:hover{background:rgba(46,31,77,.06);color:var(--primary)}
.drawer-links a.active{background:rgba(46,31,77,.08);color:var(--primary);font-weight:600}

/* ============ Hero ============ */
.hero{position:relative;padding-top:var(--nav-h);overflow:hidden}
.hero-grid{
  display:grid;grid-template-columns:55% 45%;align-items:center;gap:0;
  min-height:min(88vh,720px);
}
.hero-content{padding:52px 56px 52px 0;position:relative}
.hero-side-label{
  display:inline-block;writing-mode:vertical-rl;text-orientation:upright;
  font-size:12px;letter-spacing:.28em;color:var(--ink-300);font-weight:500;
  position:absolute;left:-4px;top:56px;
}
.hero h1{
  font-size:clamp(34px,5vw,60px);font-weight:800;line-height:1.12;letter-spacing:-.02em;
  color:var(--ink-900);margin:0 0 20px;
}
.hero-sub{font-size:18px;color:var(--ink-500);max-width:520px;line-height:1.8;margin-bottom:32px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:44px}
.hero-metrics{display:flex;gap:36px;flex-wrap:wrap}
.hero-metrics li{display:flex;flex-direction:column;gap:2px}
.hero-metrics .m-num{font-size:26px;font-weight:700;color:var(--primary);line-height:1.2}
.hero-metrics .m-label{font-size:13px;color:var(--ink-500)}
.hero-visual{position:relative;height:100%;min-height:420px;border-radius:var(--r-lg) 0 0 var(--r-lg);overflow:hidden;background:linear-gradient(150deg,#2E1F4D,#4B3277)}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(46,31,77,.72),rgba(46,31,77,.12) 55%,rgba(255,122,89,.18));
}
.hero-float{
  position:absolute;left:22px;bottom:26px;z-index:3;
  background:rgba(255,255,255,.94);border-radius:var(--r-md);padding:14px 18px;
  box-shadow:var(--sh-2);display:flex;align-items:center;gap:12px;max-width:270px;
  animation:floaty 6s ease-in-out infinite;
}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
.hero-float .dot{width:9px;height:9px;border-radius:50%;background:var(--support);flex-shrink:0;box-shadow:0 0 0 4px rgba(53,208,165,.18)}
.hero-float strong{display:block;font-size:14px;color:var(--ink-900);font-weight:700;line-height:1.4}
.hero-float span{font-size:12px;color:var(--ink-500)}

/* ============ 痛点提问区 ============ */
.pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.pain-card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 26px 26px 30px;box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.pain-card::before{
  content:"";position:absolute;left:0;top:0;width:3px;height:0;background:var(--accent);
  transition:height .26s var(--ease);
}
.pain-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.pain-card:hover::before{height:100%}
.pain-card h3{font-size:18px;font-weight:600;color:var(--ink-900);margin-bottom:10px;line-height:1.55}
.pain-card p{font-size:15px;color:var(--ink-500);line-height:1.8}
.pain-index{font-size:12px;font-weight:600;color:var(--accent);letter-spacing:.12em;margin-bottom:12px;display:block}

/* ============ 方案卡片区 ============ */
.plan-row{display:grid;gap:24px}
.plan-row-top{grid-template-columns:7fr 5fr;margin-bottom:24px}
.plan-row-bottom{grid-template-columns:repeat(3,1fr)}
.plan-row-bottom .plan-card:nth-child(2){transform:translateY(-24px)}
.plan-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#DAD4CD}
.plan-media{aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,#EFEBE6,#E3DDD6)}
.plan-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.plan-card:hover .plan-media img{transform:scale(1.03)}
.plan-body{padding:26px;display:flex;flex-direction:column;gap:14px;flex:1}
.plan-num{font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--accent)}
.plan-body h3{font-size:21px;font-weight:600;color:var(--ink-900);line-height:1.45}
.plan-card-lg .plan-body h3{font-size:26px}
.plan-body p{font-size:15px;color:var(--ink-500);line-height:1.8}
.plan-points{display:flex;flex-direction:column;gap:9px;margin-top:2px}
.plan-points li{position:relative;padding-left:18px;font-size:14px;color:var(--ink-700)}
.plan-points li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:2px;
  background:var(--support);
}
.plan-foot{margin-top:auto;padding-top:8px}
.plan-row-top .plan-card-lg{flex-direction:row}
.plan-row-top .plan-card-lg .plan-media{flex:0 0 46%;aspect-ratio:auto;min-height:280px}
.plan-row-top .plan-card-lg .plan-body{flex:1}

/* ============ 数据带 ============ */
.stats-band{background:var(--dark);color:var(--dark-text);padding:88px 0}
.stats-band .eyebrow{background:rgba(255,255,255,.08);color:#D9D2EA}
.stats-band h2{font-size:clamp(26px,3.2vw,40px);font-weight:700;color:#fff;line-height:1.25;margin:16px 0 14px}
.stats-band .section-desc{color:rgba(237,234,242,.72)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:56px}
.stat-item{padding:0 28px;border-left:1px solid var(--dark-line)}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-num{font-size:clamp(34px,4vw,48px);font-weight:800;color:#fff;line-height:1.1;letter-spacing:-.02em}
.stat-num em{font-style:normal;font-size:.5em;font-weight:600;color:var(--accent);margin-left:4px}
.stat-label{margin-top:10px;font-size:14px;color:rgba(237,234,242,.68);line-height:1.7}

/* ============ 表单区 ============ */
.lead-split{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.lead-copy h2{font-size:clamp(26px,3.2vw,40px);font-weight:700;color:var(--ink-900);line-height:1.25;margin:16px 0 16px}
.lead-copy p{font-size:16px;color:var(--ink-500);margin-bottom:22px;line-height:1.85}
.lead-list{display:flex;flex-direction:column;gap:12px}
.lead-list li{position:relative;padding-left:22px;font-size:15px;color:var(--ink-700)}
.lead-list li::before{
  content:"";position:absolute;left:0;top:.55em;width:10px;height:10px;border-radius:3px;
  background:rgba(46,31,77,.14);border:2px solid var(--primary);
}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:30px;box-shadow:var(--sh-2);
}
.form-card h3{font-size:20px;font-weight:600;color:var(--ink-900);margin-bottom:6px}
.form-card .form-note{font-size:13px;color:var(--ink-500);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-700);margin-bottom:7px}
.field input,.field select,.field textarea{
  width:100%;border:1.5px solid var(--line);border-radius:var(--r-sm);background:var(--bg);
  padding:12px 14px;font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field textarea{min-height:88px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);background:var(--surface);box-shadow:0 0 0 3px rgba(46,31,77,.10);
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.check-row{display:flex;align-items:flex-start;gap:10px;margin:6px 0 20px}
.check-row input{width:18px;height:18px;margin-top:3px;accent-color:var(--primary);flex-shrink:0}
.check-row span{font-size:13px;color:var(--ink-500);line-height:1.7}
.form-alert{
  display:none;align-items:center;gap:10px;font-size:14px;padding:12px 14px;border-radius:var(--r-sm);
  margin-bottom:18px;border-left:3px solid var(--support);background:var(--support-soft);color:#0F7A5C;
}
.form-alert.is-visible{display:flex}
.form-alert.warn{border-left-color:var(--accent);background:var(--accent-soft);color:#B3421F}

/* 右下角常驻按钮与弹层 */
.fab{
  position:fixed;right:24px;bottom:24px;z-index:100;
  display:inline-flex;align-items:center;gap:8px;padding:14px 22px;border-radius:var(--r-pill);
  background:var(--accent);color:#2A1408;font-size:15px;font-weight:700;
  box-shadow:var(--sh-2);opacity:0;pointer-events:none;transform:translateY(12px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),background .2s var(--ease);
}
.fab.is-visible{opacity:1;pointer-events:auto;transform:translateY(0)}
.fab:hover{background:#ff8a6d;transform:translateY(-2px)}
.fab svg{width:16px;height:16px}
.modal-mask{
  position:fixed;inset:0;z-index:150;background:rgba(20,18,26,.6);
  backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);
  display:flex;align-items:center;justify-content:center;padding:24px;
  opacity:0;pointer-events:none;transition:opacity .24s var(--ease);
}
.modal-mask.is-open{opacity:1;pointer-events:auto}
.modal-card{
  width:100%;max-width:480px;background:var(--surface);border-radius:var(--r-lg);
  padding:30px;box-shadow:var(--sh-2);position:relative;max-height:90vh;overflow-y:auto;
  transform:translateY(12px);transition:transform .26s var(--ease);
}
.modal-mask.is-open .modal-card{transform:translateY(0)}
.modal-close{
  position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:var(--r-pill);
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--ink-500);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.modal-close:hover{color:var(--primary);border-color:var(--primary)}
.modal-card h3{font-size:22px;font-weight:700;color:var(--ink-900);margin-bottom:8px}
.modal-card .form-note{margin-bottom:20px}

/* ============ 资讯列表（CMS 区） ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#DAD4CD}
.post-thumb{aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,#EFEBE6,#E3DDD6)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-title{
  font-size:18px;font-weight:600;color:var(--ink-900);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-excerpt{
  font-size:14px;color:var(--ink-500);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-300);
}
.post-meta .arrow{color:var(--primary);transition:transform .2s var(--ease)}
.post-card:hover .post-meta .arrow{transform:translateX(4px)}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:16px;
  padding:64px 24px;background:var(--bg);border:1px dashed var(--line);border-radius:var(--r-lg);text-align:center;
}
.empty-art{
  width:64px;height:64px;border-radius:var(--r-md);
  background:linear-gradient(140deg,rgba(46,31,77,.10),rgba(255,122,89,.16));
  display:flex;align-items:center;justify-content:center;
}
.empty-art svg{width:26px;height:26px;color:var(--primary)}
.empty-state p{font-size:15px;color:var(--ink-500)}

/* ============ FAQ ============ */
.faq-split{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-split h2{font-size:clamp(26px,3.2vw,40px);font-weight:700;color:var(--ink-900);line-height:1.25;margin:16px 0 14px}
.faq-split .faq-intro{font-size:15px;color:var(--ink-500);line-height:1.85;margin-bottom:22px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;font-size:17px;font-weight:600;color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  width:26px;height:26px;flex-shrink:0;border-radius:var(--r-pill);border:1.5px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--primary);
  transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.faq-icon svg{width:12px;height:12px}
.faq-item.is-open .faq-icon{transform:rotate(45deg);border-color:var(--accent);background:var(--accent-soft)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease)}
.faq-a-inner{padding:0 46px 22px 0;font-size:15px;color:var(--ink-500);line-height:1.85}

/* ============ CTA 带 ============ */
.cta-band{
  background:linear-gradient(120deg,#2E1F4D 0%,#3F2C68 60%,#4B3277 100%);
  color:#fff;padding:88px 0;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,89,.35),transparent 68%);
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(26px,3.2vw,38px);font-weight:700;line-height:1.25;color:#fff;margin-bottom:12px}
.cta-inner p{font-size:16px;color:rgba(255,255,255,.78);max-width:560px;line-height:1.8}
.cta-btns{display:flex;gap:14px;flex-wrap:wrap}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.55)}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.10);border-color:#fff;color:#fff}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg);border-top:1px solid var(--line);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--ink-500);line-height:1.85;max-width:300px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--ink-900);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{position:relative;font-size:14px;color:var(--ink-500);transition:color .2s var(--ease),padding-left .2s var(--ease)}
.footer-col a::before{
  content:"";position:absolute;left:0;top:50%;width:0;height:1.5px;background:var(--accent);
  transform:translateY(-50%);transition:width .2s var(--ease),left .2s var(--ease);
}
.footer-col a:hover{color:var(--primary);padding-left:10px}
.footer-col a:hover::before{width:6px;left:0}
.footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-300);
}
.footer-bottom a{color:var(--ink-500)}
.footer-bottom a:hover{color:var(--primary)}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(16px)}
.reveal.is-visible{
  opacity:1;transform:none;
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
.reveal.is-visible:nth-child(2){transition-delay:.06s}
.reveal.is-visible:nth-child(3){transition-delay:.12s}
.reveal.is-visible:nth-child(4){transition-delay:.18s}
.reveal.is-visible:nth-child(5){transition-delay:.24s}
.reveal.is-visible:nth-child(6){transition-delay:.3s}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .section{padding:80px 0}
  .hero-content{padding:44px 36px 44px 0}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .plan-row-top .plan-card-lg{flex-direction:column}
  .plan-row-top .plan-card-lg .plan-media{flex:none;aspect-ratio:16/10;min-height:0}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .hamburger{display:flex}
  .nav-actions .btn-primary{display:none}
  .hero-grid{grid-template-columns:1fr;min-height:0}
  .hero-content{padding:40px 0 32px}
  .hero-side-label{display:none}
  .hero-visual{border-radius:var(--r-lg);min-height:300px;height:320px;margin-bottom:52px}
  .plan-row-top,.plan-row-bottom,.lead-split,.faq-split{grid-template-columns:1fr}
  .plan-row-bottom .plan-card:nth-child(2){transform:none}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:32px 0}
  .stat-item:nth-child(3){border-left:0;padding-left:0}
  .faq-split{gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
  .cta-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:64px 0}
  .section-head{margin-bottom:32px}
  .hero-content{padding:28px 0 26px}
  .hero-metrics{gap:24px}
  .hero-metrics .m-num{font-size:22px}
  .pain-grid{grid-template-columns:1fr}
  .post-grid{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr;gap:0}
  .stat-item{border-left:0;padding:22px 0;border-top:1px solid var(--dark-line)}
  .stat-item:first-child{border-top:0;padding-top:0}
  .modal-mask{align-items:flex-end;padding:0}
  .modal-card{max-width:100%;border-radius:var(--r-lg) var(--r-lg) 0 0;padding:26px 22px 32px}
  .fab{right:16px;bottom:16px;padding:12px 18px;font-size:14px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:479px){
  .hero h1{font-size:32px}
  .hero-cta .btn{width:100%}
  .hero-visual{height:240px;min-height:240px}
  .logo-text{font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --bg:#F7F5F2;
  --surface:#FFFFFF;
  --line:#E6E2DD;
  --primary:#2E1F4D;
  --primary-hover:#3F2C68;
  --accent:#FF7A59;
  --support:#35D0A5;
  --ink-900:#14121A;
  --ink-700:#3A3546;
  --ink-500:#6B6577;
  --ink-300:#A9A4B4;
  --dark:#17141F;
  --dark-line:rgba(255,255,255,.10);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --sh-1:0 1px 2px rgba(20,18,26,.06);
  --sh-2:0 12px 32px rgba(20,18,26,.10);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-900);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- 进度条 ---------- */
.progress-bar{
  position:fixed;top:0;left:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  z-index:90;transition:width .12s linear;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,242,.92);
  backdrop-filter:blur(4px);
  -webkit-backdrop-filter:blur(4px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;gap:22px;min-height:64px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:34px;height:34px;border-radius:11px;background:var(--primary);
  display:grid;place-items:center;flex:none;
  box-shadow:0 4px 12px rgba(46,31,77,.22);
}
.logo-mark svg{width:18px;height:18px}
.logo-text{
  font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--ink-900);
  white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:4px;flex:1}
.nav-link{
  display:inline-block;padding:8px 14px;border-radius:999px;
  font-size:15px;color:var(--ink-500);
  transition:color .2s var(--ease),background-color .2s var(--ease);
  white-space:nowrap;
}
.nav-link:hover{color:var(--primary);background:rgba(46,31,77,.06)}
.nav-link.active{color:var(--primary);font-weight:600;background:rgba(46,31,77,.09)}
.header-actions{display:flex;align-items:center;gap:10px;flex:none;margin-left:auto}
.icon-btn{
  width:38px;height:38px;border-radius:999px;border:1px solid var(--line);
  background:var(--surface);display:grid;place-items:center;
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.icon-btn:hover{border-color:var(--accent);transform:translateY(-1px);box-shadow:var(--sh-1)}
.icon-btn svg{width:17px;height:17px;stroke:var(--ink-700)}
@media (max-width:920px){
  .header-inner{flex-wrap:wrap;min-height:0;padding:10px 0 8px;row-gap:6px}
  .logo-text{font-size:15px}
  .nav-links{
    order:3;width:100%;flex:1 0 100%;overflow-x:auto;flex-wrap:nowrap;
    padding-bottom:2px;scrollbar-width:none;
  }
  .nav-links::-webkit-scrollbar{display:none}
  .nav-link{padding:7px 12px;font-size:14px}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  cursor:pointer;transition:all .22s var(--ease);
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:transparent;border-color:var(--ink-900);color:var(--ink-900)}
.btn-ghost:hover{border-color:var(--accent);background:rgba(255,122,89,.08);transform:translateY(-1px)}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{background:#F3EEFF;transform:translateY(-1px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
.btn-outline-light:hover{border-color:var(--accent);background:rgba(255,122,89,.14);transform:translateY(-1px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--primary);
}
.text-link svg{width:15px;height:15px;transition:transform .2s var(--ease)}
.text-link:hover svg{transform:translateX(4px)}

/* ---------- 标签 ---------- */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:500;letter-spacing:.1em;
}
.pill-mint{background:rgba(53,208,165,.15);color:#127A5C}
.pill-ink{background:#F1EEE9;color:var(--ink-500);letter-spacing:.02em}
.pill-accent{background:rgba(255,122,89,.14);color:#B84425}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;overflow:hidden;background:var(--dark);
  color:#EDEAF2;padding:34px 0 52px;
}
.article-hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.26}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(23,20,31,.94) 0%,rgba(46,31,77,.80) 62%,rgba(46,31,77,.62) 100%);
}
.article-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:rgba(237,234,242,.66);margin-bottom:22px;
}
.breadcrumb a{color:rgba(237,234,242,.72);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:#fff}
.breadcrumb span.sep{color:rgba(237,234,242,.34)}
.crumb-current{
  max-width:44ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  color:rgba(237,234,242,.9);
}
.article-head{max-width:860px}
.article-head h1{
  margin:16px 0 18px;
  font-size:clamp(28px,4vw,46px);font-weight:800;line-height:1.2;
  letter-spacing:-.02em;color:#fff;
  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 18px;
  font-size:13.5px;color:rgba(237,234,242,.68);
}
.meta-row b{font-weight:600;color:rgba(237,234,242,.92)}
.meta-dot{width:4px;height:4px;border-radius:50%;background:rgba(237,234,242,.32)}

/* ---------- 主体布局 ---------- */
.article-wrap{
  display:grid;grid-template-columns:minmax(0,1fr) 336px;
  gap:48px;padding:56px 0 72px;align-items:start;
}
@media (max-width:1023px){
  .article-wrap{grid-template-columns:minmax(0,1fr);gap:36px;padding:40px 0 56px}
}
.article-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:44px;box-shadow:var(--sh-1);
}
@media (max-width:767px){
  .article-card{padding:24px 20px;border-radius:var(--r-md)}
}

/* ---------- 正文排版 ---------- */
.article-body{
  max-width:760px;
  font-size:17.5px;line-height:1.9;color:var(--ink-700);
}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;margin:40px 0 16px;padding-left:14px;
  font-size:24px;font-weight:700;color:var(--ink-900);line-height:1.4;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.3em;bottom:.3em;width:4px;border-radius:2px;background:var(--accent);
}
.article-body h3{margin:28px 0 12px;font-size:19px;font-weight:600;color:var(--ink-900)}
.article-body h4{margin:22px 0 10px;font-size:16.5px;font-weight:600;color:var(--ink-700)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em}
.article-body ul{list-style:none;padding-left:1.3em}
.article-body ul li{position:relative;margin:7px 0}
.article-body ul li::before{
  content:"";position:absolute;left:-1em;top:.78em;
  width:6px;height:6px;border-radius:50%;background:var(--primary);
}
.article-body ol{list-style:decimal}
.article-body ol li{margin:7px 0;padding-left:2px}
.article-body ol li::marker{color:var(--accent);font-weight:600}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;border-left:3px solid var(--accent);
  background:#FBF7F4;border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--ink-700);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{margin:26px 0;width:100%;border-radius:var(--r-sm)}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--ink-300);text-align:center;margin-top:8px}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--accent);font-weight:600}
.article-body strong{color:var(--ink-900);font-weight:600}
.article-body table{width:100%;margin:24px 0;font-size:15px;border:1px solid var(--line)}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;line-height:1.7}
.article-body thead th{background:#F1EEE9;font-weight:600;color:var(--ink-900)}
.article-body tbody tr:nth-child(even){background:#FAF8F5}
.article-body pre{
  margin:24px 0;padding:18px 20px;border-radius:var(--r-sm);
  background:var(--dark);color:#EDEAF2;overflow:auto;font-size:14px;line-height:1.7;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.94em}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0}
.article-body > *:first-child{margin-top:0}

/* ---------- 空态 ---------- */
.empty-state{text-align:center;padding:40px 12px 32px;max-width:560px;margin:0 auto}
.empty-illu{
  width:86px;height:86px;margin:0 auto 22px;border-radius:26px;
  background:linear-gradient(135deg,rgba(46,31,77,.10),rgba(255,122,89,.16));
  display:grid;place-items:center;
}
.empty-illu svg{width:36px;height:36px;stroke:var(--primary);fill:none;stroke-width:1.6}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--ink-500);font-size:15px;margin-bottom:22px}

/* ---------- 文末标签与分享 ---------- */
.article-foot{
  margin-top:34px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:16px 24px;align-items:center;justify-content:space-between;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.share-row{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--ink-300)}

/* ---------- 上一篇 / 下一篇 ---------- */
.postnav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:32px}
@media (max-width:640px){.postnav{grid-template-columns:1fr}}
.postnav-card{
  display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:20px 22px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.postnav-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D9D4CE}
.postnav-label{font-size:12px;letter-spacing:.1em;color:var(--accent);font-weight:600}
.postnav-title{margin-top:8px;font-size:16px;font-weight:600;line-height:1.5}
.postnav-text{margin-top:6px;font-size:13.5px;color:var(--ink-500);line-height:1.7}
.postnav-card.next{text-align:right}

/* ---------- 通用卡片 ---------- */
.section{margin-top:56px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}
.section-head h2{font-size:clamp(20px,2.2vw,26px)}
.section-head p{font-size:14px;color:var(--ink-500);margin-top:6px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
@media (max-width:1023px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}}
@media (max-width:640px){.card-grid{grid-template-columns:1fr}}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.card-thumb{width:100%;aspect-ratio:16/10;object-fit:cover;background:#EDE9E4}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{
  font-size:17px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-text{
  font-size:14px;color:var(--ink-500);line-height:1.72;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-300);padding-top:6px;
}
.card-meta svg{width:15px;height:15px;transition:transform .2s var(--ease)}
.card:hover .card-meta svg{transform:translateX(4px)}
.card-meta svg path{stroke:var(--accent)}

/* ---------- 侧栏 ---------- */
.article-side{display:flex;flex-direction:column;gap:22px;position:sticky;top:92px}
@media (max-width:1023px){.article-side{position:static;gap:20px}}
.side-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:22px 22px 24px;box-shadow:var(--sh-1);
}
.side-card h2{font-size:15px;font-weight:700;letter-spacing:.04em;margin-bottom:14px}
.toc-list a{
  display:block;padding:7px 0 7px 12px;font-size:14px;line-height:1.6;
  color:var(--ink-500);border-left:2px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.toc-list a:hover{color:var(--primary);border-color:var(--primary)}
.toc-list a.is-active{color:var(--primary);font-weight:600;border-color:var(--accent);background:rgba(46,31,77,.045)}
.side-note{font-size:13px;color:var(--ink-500);line-height:1.75;margin-bottom:16px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.field label{font-size:13px;font-weight:600;color:var(--ink-700)}
.field input,.field select,.field textarea{
  width:100%;padding:11px 13px;font-size:14px;background:#FCFBFA;
  border:1.5px solid var(--line);border-radius:var(--r-sm);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(46,31,77,.10);
}
.privacy-note{font-size:12px;color:var(--ink-300);line-height:1.65;margin-top:12px}
.form-tip{
  margin-top:14px;padding:11px 14px;border-radius:var(--r-sm);
  background:rgba(53,208,165,.13);border-left:3px solid var(--support);
  font-size:13px;color:#127A5C;
}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--dark);color:#EDEAF2;
  padding:72px 0;
}
.cta-band::before{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,89,.34),transparent 66%);
}
.cta-inner{
  position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:26px;
  align-items:center;justify-content:space-between;
}
.cta-text h2{font-size:clamp(22px,2.6vw,30px);color:#fff;margin-bottom:10px}
.cta-text p{font-size:15px;color:rgba(237,234,242,.72);max-width:56ch;line-height:1.8}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--surface);border-top:1px solid var(--line);
  padding:56px 0 24px;
}
.footer-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px;
}
.footer-brand .logo{margin-bottom:14px}
.footer-brand p{font-size:14px;color:var(--ink-500);line-height:1.8;max-width:330px}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.06em;margin-bottom:14px}
.footer-col li{margin-bottom:10px}
.footer-col a{
  display:inline-block;font-size:14px;color:var(--ink-500);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col a:hover{color:var(--primary);transform:translateX(2px)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
  font-size:13px;color:var(--ink-300);
}
.footer-bottom a{color:var(--ink-500);text-decoration:underline;text-underline-offset:3px}
.footer-bottom a:hover{color:var(--primary)}
@media (max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:520px){
  .container{padding:0 20px}
  .site-footer{padding:44px 0 20px}
  .article-hero{padding:26px 0 40px}
  .crumb-current{max-width:24ch}
  .meta-row{font-size:13px;gap:8px 14px}
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --bg:#F7F5F2;
  --surface:#FFFFFF;
  --line:#E6E2DD;
  --primary:#2E1F4D;
  --primary-hover:#3F2C68;
  --primary-soft:rgba(46,31,77,.07);
  --accent:#FF7A59;
  --support:#35D0A5;
  --ink-900:#14121A;
  --ink-700:#3A3546;
  --ink-500:#6B6577;
  --ink-300:#A9A4B4;
  --dark:#17141F;
  --dark-ink:#EDEAF2;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,18,26,.06);
  --sh-2:0 12px 32px rgba(20,18,26,.10);
  --ease:cubic-bezier(.2,.8,.2,1);
  --header-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-900);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink-900)}
p{margin:0}
svg{display:block}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,242,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,245,242,.92);
  border-bottom-color:var(--line);
  box-shadow:var(--sh-1);
  -webkit-backdrop-filter:blur(4px);
  backdrop-filter:blur(4px);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--header-h)}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary);
  box-shadow:0 4px 12px rgba(46,31,77,.22);
  flex-shrink:0;
}
.logo-mark svg{width:18px;height:18px}
.logo-text{font-size:16.5px;font-weight:800;letter-spacing:-.01em;color:var(--primary);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{
  padding:8px 14px;border-radius:var(--r-pill);
  font-size:15px;color:var(--ink-700);
  transition:color .2s var(--ease),background .2s var(--ease);
  white-space:nowrap;
}
.nav-link:hover{color:var(--primary);background:var(--primary-soft)}
.nav-link.active{color:var(--primary);background:rgba(46,31,77,.10);font-weight:600}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.icon-btn{
  width:38px;height:38px;border-radius:var(--r-pill);
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:var(--surface);color:var(--ink-700);
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px)}
.icon-btn svg{width:17px;height:17px}
.menu-toggle{display:none;width:40px;height:40px;border-radius:var(--r-sm);border:1px solid var(--line);background:var(--surface);align-items:center;justify-content:center}
.menu-toggle svg{width:18px;height:18px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1.2;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  border:1.5px solid transparent;
}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 14px rgba(46,31,77,.18)}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:0 10px 26px rgba(46,31,77,.24)}
.btn-primary:active{transform:translateY(0);box-shadow:0 3px 10px rgba(46,31,77,.18)}
.btn-ghost{border-color:var(--ink-900);color:var(--ink-900);background:transparent}
.btn-ghost:hover{border-color:var(--accent);background:rgba(255,122,89,.10);color:var(--ink-900)}
.btn-accent{background:var(--accent);color:#33170F}
.btn-accent:hover{transform:translateY(-1px);box-shadow:0 12px 28px rgba(255,122,89,.34)}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:var(--r-pill)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--primary);font-size:14.5px}
.text-link svg{width:15px;height:15px;transition:transform .2s var(--ease)}
.text-link:hover svg{transform:translateX(4px)}

/* ---------- Shared bits ---------- */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--r-pill);
  font-size:12px;font-weight:500;letter-spacing:.1em;
  background:rgba(53,208,165,.14);color:#14775D;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--primary-soft);color:var(--primary);
  font-size:12.5px;font-weight:600;letter-spacing:.08em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.section{padding:96px 0}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,3.1vw,36px);line-height:1.28;letter-spacing:-.02em;margin-bottom:14px}
.section-head p{color:var(--ink-500);font-size:16px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- Hero ---------- */
.hero{padding:56px 0 84px;position:relative;overflow:hidden}
.hero::after{
  content:"";position:absolute;right:-180px;top:-140px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,89,.16),rgba(255,122,89,0) 68%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:52px;align-items:center;position:relative;z-index:1}
.hero h1{
  font-size:clamp(32px,4.4vw,56px);line-height:1.12;letter-spacing:-.02em;font-weight:800;
  margin:20px 0 18px;
}
.hero h1 em{font-style:normal;color:var(--primary);position:relative}
.hero h1 em::after{
  content:"";position:absolute;left:0;right:0;bottom:4px;height:8px;border-radius:4px;
  background:rgba(255,122,89,.22);z-index:-1;
}
.hero-sub{font-size:17.5px;color:var(--ink-700);max-width:580px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 34px}
.hero-stats{display:flex;flex-wrap:wrap;gap:36px;padding-top:26px;border-top:1px solid var(--line)}
.hero-stat strong{display:block;font-size:26px;font-weight:800;line-height:1.2;color:var(--primary);font-variant-numeric:tabular-nums}
.hero-stat span{font-size:13px;color:var(--ink-500)}
.hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:4/3.5;background:#EDEAF2}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(200deg,rgba(46,31,77,.42) 0%,rgba(46,31,77,.05) 46%,rgba(23,20,31,.55) 100%);
}
.float-card{
  position:absolute;left:18px;bottom:18px;z-index:2;
  display:flex;align-items:center;gap:10px;
  padding:12px 16px;border-radius:14px;
  background:rgba(255,255,255,.95);
  box-shadow:0 14px 30px rgba(20,18,26,.18);
  animation:floatY 6s ease-in-out infinite;
}
.float-card b{font-size:13.5px;font-weight:700;color:var(--ink-900)}
.float-card small{display:block;font-size:12px;color:var(--ink-500)}
.dot{width:9px;height:9px;border-radius:50%;background:var(--support);box-shadow:0 0 0 4px rgba(53,208,165,.2);flex-shrink:0}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}

/* ---------- Intro / facts ---------- */
.intro-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:start}
.intro-text p{font-size:16.5px;color:var(--ink-700);margin-bottom:18px}
.intro-text p:last-child{margin-bottom:0}
.fact-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);
}
.fact-card h3{font-size:18px;margin-bottom:16px}
.fact-list li{display:flex;gap:12px;padding:13px 0;border-bottom:1px dashed var(--line);font-size:15px;color:var(--ink-700)}
.fact-list li:last-child{border-bottom:0;padding-bottom:0}
.fact-list li b{font-variant-numeric:tabular-nums;color:var(--primary);font-weight:800;min-width:26px}

/* ---------- Timeline ---------- */
.timeline-layout{display:grid;grid-template-columns:minmax(0,1fr) 296px;gap:56px;align-items:start}
.steps{position:relative}
.step{
  position:relative;display:grid;grid-template-columns:62px minmax(0,1fr);gap:22px;
  padding-bottom:38px;
}
.step:last-child{padding-bottom:0}
.step:not(:last-child)::after{
  content:"";position:absolute;left:30px;top:56px;bottom:6px;width:2px;
  background:linear-gradient(180deg,rgba(46,31,77,.28),rgba(46,31,77,.06));
  border-radius:2px;
}
.step-num{
  width:62px;height:62px;border-radius:18px;
  display:flex;align-items:center;justify-content:center;
  background:var(--surface);border:1px solid var(--line);
  font-size:20px;font-weight:800;color:var(--primary);
  font-variant-numeric:tabular-nums;
  box-shadow:var(--sh-1);
}
.step-body{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:24px 26px;transition:box-shadow .22s var(--ease),transform .22s var(--ease)}
.step-body:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.step-body h3{font-size:19px;margin-bottom:8px}
.step-body p{color:var(--ink-500);font-size:15.5px}
.step-tip{
  display:inline-flex;align-items:center;gap:8px;margin-top:14px;
  padding:8px 12px;border-radius:10px;
  background:rgba(53,208,165,.12);color:#14775D;font-size:13.5px;
}
.step-tip svg{width:14px;height:14px;flex-shrink:0}

.toc{
  position:sticky;top:96px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-1);
}
.toc h3{font-size:14px;letter-spacing:.08em;color:var(--ink-500);font-weight:600;margin-bottom:14px}
.toc ol{counter-reset:toc}
.toc li{counter-increment:toc;margin-bottom:4px}
.toc a{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;border-radius:10px;font-size:14.5px;color:var(--ink-700);
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.toc a::before{
  content:counter(toc,decimal-leading-zero);
  font-size:12px;font-weight:700;color:var(--ink-300);font-variant-numeric:tabular-nums;
}
.toc a:hover{background:var(--primary-soft);color:var(--primary);transform:translateX(2px)}
.toc .btn{width:100%;margin-top:16px}

/* ---------- Scene cards ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.scene-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px;position:relative;overflow:hidden;
  transition:box-shadow .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.scene-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent);
  transform:scaleY(0);transform-origin:top;transition:transform .24s var(--ease);
}
.scene-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:rgba(46,31,77,.16)}
.scene-card:hover::before{transform:scaleY(1)}
.scene-card .idx{font-size:13px;font-weight:800;color:var(--ink-300);letter-spacing:.08em;font-variant-numeric:tabular-nums}
.scene-card h3{font-size:18.5px;margin:10px 0 8px}
.scene-card p{color:var(--ink-500);font-size:15px}

/* ---------- Compare ---------- */
.compare{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.panel{border-radius:var(--r-lg);padding:28px;border:1px solid var(--line);background:var(--bg)}
.panel.safe{border-color:rgba(53,208,165,.4);background:rgba(53,208,165,.07)}
.panel.warn{border-color:rgba(255,122,89,.38);background:rgba(255,122,89,.07)}
.panel h3{display:flex;align-items:center;gap:10px;font-size:19px;margin-bottom:18px}
.panel h3 span{width:26px;height:26px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}
.panel.safe h3 span{background:var(--support);color:#0C3E30}
.panel.warn h3 span{background:var(--accent);color:#3A130A}
.panel h3 span svg{width:15px;height:15px}
.panel ul li{position:relative;padding-left:22px;margin-bottom:12px;font-size:15.2px;color:var(--ink-700)}
.panel ul li:last-child{margin-bottom:0}
.panel ul li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;background:var(--ink-300)}
.panel.safe ul li::before{background:var(--support)}
.panel.warn ul li::before{background:var(--accent)}

/* ---------- Checklist ---------- */
.checklist-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start}
.checklist{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 28px}
.checklist li{
  display:flex;gap:12px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  padding:16px 18px;font-size:15px;color:var(--ink-700);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.checklist li:hover{border-color:rgba(46,31,77,.2);box-shadow:var(--sh-1)}
.checklist .tick{
  width:20px;height:20px;border-radius:6px;flex-shrink:0;margin-top:4px;
  background:rgba(53,208,165,.18);color:#14775D;
  display:inline-flex;align-items:center;justify-content:center;
}
.checklist .tick svg{width:12px;height:12px}
.note-box{
  margin-top:22px;border-left:3px solid var(--accent);
  background:rgba(255,122,89,.08);border-radius:0 12px 12px 0;
  padding:18px 22px;font-size:14.8px;color:var(--ink-700);
}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:300px minmax(0,1fr);gap:48px;align-items:start}
.faq-aside h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;margin-bottom:14px}
.faq-aside p{color:var(--ink-500);font-size:15px;margin-bottom:20px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:22px 0;font-size:17px;font-weight:600;color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary)}
.faq-icon{
  width:24px;height:24px;flex-shrink:0;border-radius:50%;
  border:1.5px solid var(--line);display:inline-flex;align-items:center;justify-content:center;
  transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
  margin-top:3px;
}
.faq-icon svg{width:12px;height:12px}
.faq-item[open] .faq-icon{transform:rotate(45deg);border-color:var(--accent);background:rgba(255,122,89,.12)}
.faq-body{padding:0 0 22px;color:var(--ink-500);font-size:15.5px;max-width:720px}

/* ---------- Cross links ---------- */
.link-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.link-card{
  display:flex;flex-direction:column;gap:12px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px;transition:box-shadow .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.link-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px);border-color:rgba(46,31,77,.16)}
.link-card h3{font-size:18px}
.link-card p{color:var(--ink-500);font-size:14.6px;flex:1}
.link-card .pill{background:var(--primary-soft);color:var(--primary)}
.link-card .text-link{margin-top:4px}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;color:var(--dark-ink);
  background:linear-gradient(120deg,rgba(23,20,31,.94),rgba(46,31,77,.9)),url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  padding:78px 0;
  overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-120px;bottom:-160px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,89,.28),rgba(255,122,89,0) 70%);
}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.3fr .7fr;gap:40px;align-items:center}
.cta-inner h2{color:#fff;font-size:clamp(24px,3vw,34px);line-height:1.28;margin-bottom:14px}
.cta-inner p{color:rgba(237,234,242,.78);font-size:16px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.cta-actions .btn-ghost{border-color:rgba(255,255,255,.5);color:#fff}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}

/* ---------- Footer ---------- */
.site-footer{background:var(--surface);border-top:1px solid var(--line);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{color:var(--ink-500);font-size:14.6px;max-width:340px}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:var(--ink-500);font-weight:600;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{
  display:inline-block;font-size:14.6px;color:var(--ink-700);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col a:hover{color:var(--primary);transform:translateX(2px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  margin-top:44px;padding-top:24px;border-top:1px solid var(--line);
  color:var(--ink-500);font-size:13.4px;
}
.footer-bottom a{color:var(--ink-700)}
.footer-bottom a:hover{color:var(--primary)}

/* ---------- Mobile drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,18,26,.5);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
}
.drawer-mask.open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;left:0;bottom:0;width:min(84vw,340px);z-index:80;
  background:var(--surface);padding:24px;
  transform:translateX(-100%);transition:transform .28s var(--ease);
  overflow-y:auto;box-shadow:var(--sh-2);
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-head .logo-text{font-size:15.5px}
.drawer-close{width:36px;height:36px;border-radius:var(--r-sm);border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center}
.drawer-close svg{width:16px;height:16px}
.drawer-nav a{
  display:block;padding:13px 14px;border-radius:12px;font-size:16px;color:var(--ink-700);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.drawer-nav a:hover{background:var(--primary-soft);color:var(--primary)}
.drawer-nav a.active{background:rgba(46,31,77,.10);color:var(--primary);font-weight:600}
.drawer-cta{margin-top:22px}
.drawer-cta .btn{width:100%}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-visible{opacity:1;transform:translateY(0)}
.reveal[data-d="1"]{transition-delay:.06s}
.reveal[data-d="2"]{transition-delay:.12s}
.reveal[data-d="3"]{transition-delay:.18s}
.reveal[data-d="4"]{transition-delay:.24s}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .timeline-layout{gap:40px}
  .faq-layout{gap:36px}
}
@media (max-width:1023px){
  :root{--header-h:60px}
  .nav-links{display:none}
  .menu-toggle{display:inline-flex}
  .section{padding:76px 0}
  .hero{padding:40px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-visual{aspect-ratio:16/10}
  .intro-grid,.timeline-layout,.checklist-wrap,.faq-layout,.cta-inner{grid-template-columns:1fr;gap:34px}
  .toc{position:static}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:60px 0}
  .header-actions .btn-sm{display:none}
  .hero-stats{gap:24px}
  .hero-stat strong{font-size:22px}
  .scene-grid,.compare-grid,.link-cards,.checklist{grid-template-columns:1fr}
  .step{grid-template-columns:50px minmax(0,1fr);gap:16px}
  .step-num{width:50px;height:50px;border-radius:15px;font-size:17px}
  .step:not(:last-child)::after{left:24px;top:46px}
  .step-body{padding:20px}
  .panel{padding:22px}
  .cta-band{padding:60px 0}
}
@media (max-width:520px){
  .logo-text{font-size:15px;white-space:normal;line-height:1.3}
  .footer-grid{grid-template-columns:1fr}
  .hero h1{font-size:30px}
  .hero-sub{font-size:16px}
  .hero-cta .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --bg:#F7F5F2;
  --surface:#FFFFFF;
  --line:#E6E2DD;
  --primary:#2E1F4D;
  --primary-hover:#3F2C68;
  --accent:#FF7A59;
  --accent-soft:rgba(255,122,89,.10);
  --support:#35D0A5;
  --support-soft:rgba(53,208,165,.12);
  --ink-900:#14121A;
  --ink-700:#3A3546;
  --ink-500:#6B6577;
  --ink-300:#A9A4B4;
  --dark:#17141F;
  --dark-line:rgba(255,255,255,.10);
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --shadow-sm:0 1px 2px rgba(20,18,26,.06);
  --shadow-md:0 12px 32px rgba(20,18,26,.10);
  --nav-h:64px;
  --ease:cubic-bezier(.2,.8,.2,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-900);
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.num{font-variant-numeric:tabular-nums;letter-spacing:.01em}

.container{max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.1em;
  color:var(--primary);text-transform:uppercase;
  background:rgba(46,31,77,.06);
  border:1px solid var(--line);
  border-radius:999px;padding:6px 14px;margin-bottom:18px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}
h1{font-size:clamp(34px,5vw,60px);font-weight:800;line-height:1.12;letter-spacing:-.02em}
h2{font-size:clamp(26px,3.2vw,40px);font-weight:700;line-height:1.25}
h3{font-size:21px;font-weight:600;line-height:1.4}
.lead{font-size:17px;line-height:1.9;color:var(--ink-700)}
.muted{color:var(--ink-500);font-size:15px;line-height:1.8}

/* ============ header / nav ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,242,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line)}
.header-inner{
  height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:36px;height:36px;border-radius:11px;
  background:rgba(46,31,77,.06);
  border:1px solid var(--line);
  display:grid;place-items:center;
}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:16px;font-weight:800;color:var(--primary);letter-spacing:.02em}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 14px;border-radius:10px;
  font-size:15px;color:var(--ink-700);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;
  border-radius:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--primary);background:rgba(46,31,77,.04)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--primary);font-weight:600}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.icon-btn{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  border:1px solid var(--line);background:var(--surface);
  color:var(--ink-700);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{color:var(--primary);border-color:var(--ink-300);transform:translateY(-1px)}
.icon-btn svg{width:18px;height:18px}
.nav-toggle{display:none}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1;
  border:1.5px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm)}
.btn-outline{border-color:var(--ink-300);color:var(--ink-900);background:transparent}
.btn-outline:hover{border-color:var(--accent);background:var(--accent-soft);color:var(--ink-900)}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{transform:translateY(-1px);box-shadow:0 12px 32px rgba(0,0,0,.25)}
.btn-outline-light{border-color:rgba(255,255,255,.45);color:#fff;background:transparent}
.btn-outline-light:hover{border-color:var(--accent);background:rgba(255,122,89,.16)}
.btn-sm{padding:11px 18px;font-size:14px}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--primary);
}
.link-arrow svg{width:15px;height:15px;transition:transform .2s var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ============ hero ============ */
.hero{
  position:relative;overflow:hidden;
  background:
    linear-gradient(105deg,rgba(23,20,31,.94) 0%,rgba(46,31,77,.86) 52%,rgba(46,31,77,.55) 100%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  color:#EDEAF2;
  padding:72px 0 80px;
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  border-radius:50%;background:radial-gradient(circle,rgba(255,122,89,.28),transparent 68%);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;
}
.hero .eyebrow{background:rgba(255,255,255,.10);border-color:var(--dark-line);color:#EDEAF2}
.hero h1{color:#fff}
.hero-lead{margin-top:20px;font-size:17px;line-height:1.9;color:rgba(237,234,242,.86);max-width:640px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:20px;margin-top:40px;padding-top:28px;
  border-top:1px solid var(--dark-line);
}
.hero-stats .stat-num{font-size:28px;font-weight:800;color:#fff;line-height:1.2}
.hero-stats .stat-num span{font-size:14px;font-weight:600;color:var(--accent);margin-left:4px}
.hero-stats .stat-label{font-size:13px;color:rgba(237,234,242,.66);margin-top:4px}
.hero-panel{
  background:rgba(23,20,31,.55);
  border:1px solid var(--dark-line);
  border-radius:var(--radius-lg);
  padding:26px 24px;
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
}
.hero-panel .badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.08em;
  padding:6px 12px;border-radius:999px;
  background:rgba(53,208,165,.16);color:#8FEBD2;
}
.hero-panel .badge i{width:6px;height:6px;border-radius:50%;background:var(--support);display:inline-block}
.hero-panel h2{font-size:20px;color:#fff;margin-top:16px}
.hero-panel ul{margin-top:16px;display:grid;gap:12px}
.hero-panel li{
  display:grid;grid-template-columns:18px 1fr;gap:10px;
  font-size:14px;line-height:1.7;color:rgba(237,234,242,.82);
}
.hero-panel li svg{width:16px;height:16px;margin-top:4px}
.hero-panel .panel-foot{
  margin-top:20px;padding-top:16px;border-top:1px solid var(--dark-line);
  font-size:13px;color:rgba(237,234,242,.6);
}

/* ============ split blocks ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split.reverse .split-media{order:2}
.split-media{
  border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
  background:linear-gradient(140deg,#EFEAF6,#F7F5F2);
}
.split-media img{aspect-ratio:16/10;object-fit:cover;width:100%}
.split h2{margin-bottom:18px}
.point-list{margin-top:22px;display:grid;gap:12px}
.point-list li{
  display:grid;grid-template-columns:14px 1fr;gap:12px;
  font-size:15px;color:var(--ink-700);
}
.point-list li span.box{
  width:10px;height:10px;border-radius:3px;background:var(--accent);margin-top:9px;
}
.block-pair{display:grid;gap:88px}

/* ============ risk list ============ */
.risk-band{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.risk-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.risk-item{
  display:grid;grid-template-columns:34px 1fr;gap:14px;
  background:var(--bg);border:1px solid var(--line);
  border-left:3px solid var(--accent);
  border-radius:var(--radius);padding:20px 22px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.risk-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.risk-item .warn{
  width:34px;height:34px;border-radius:10px;
  background:var(--accent-soft);display:grid;place-items:center;
}
.risk-item .warn svg{width:17px;height:17px}
.risk-item h3{font-size:16px;font-weight:600}
.risk-item p{margin-top:6px;font-size:14px;line-height:1.75;color:var(--ink-500)}

/* ============ steps ============ */
.steps{counter-reset:step;display:grid;gap:0}
.step{
  display:grid;grid-template-columns:86px 1fr;gap:24px;
  padding:26px 0;border-bottom:1px solid var(--line);
  position:relative;
}
.step:first-child{border-top:1px solid var(--line)}
.step-index{
  font-size:30px;font-weight:800;color:var(--ink-300);line-height:1;
  font-variant-numeric:tabular-nums;padding-top:4px;
}
.step h3{font-size:19px;margin-bottom:8px;transition:color .2s var(--ease)}
.step p{font-size:15px;color:var(--ink-500);max-width:760px}
.step:hover .step-index{color:var(--accent)}
.step:hover h3{color:var(--primary)}

/* ============ checklist ============ */
.checklist{display:grid;gap:14px;margin-top:28px}
.checklist li{
  display:grid;grid-template-columns:22px 1fr;gap:12px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:16px 20px;
  font-size:15px;color:var(--ink-700);
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.checklist li:hover{border-color:var(--support);transform:translateX(2px)}
.checklist li svg{width:18px;height:18px;margin-top:4px}

/* ============ faq ============ */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{margin:0}
.faq-trigger{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-trigger:hover{color:var(--primary)}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;
  border:1px solid var(--line);background:var(--surface);
  display:grid;place-items:center;
  transition:transform .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease);
}
.faq-icon svg{width:14px;height:14px;transition:stroke .22s var(--ease)}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--accent-soft);border-color:var(--accent)}
.faq-item.open .faq-icon svg{stroke:var(--accent)}
.faq-item.open .faq-trigger{color:var(--primary)}
.faq-panel{max-height:0;overflow:hidden;transition:max-height .22s var(--ease)}
.faq-panel p{padding:0 4px 24px;font-size:15px;line-height:1.85;color:var(--ink-500);max-width:680px}

/* ============ related pills ============ */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.pill-card{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:999px;padding:18px 26px;
  font-size:15px;font-weight:600;color:var(--ink-900);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease),color .2s var(--ease);
}
.pill-card small{display:block;font-size:12px;font-weight:500;color:var(--ink-500);letter-spacing:.02em;margin-top:2px}
.pill-card svg{width:16px;height:16px;flex-shrink:0;color:var(--ink-300);transition:transform .2s var(--ease),color .2s var(--ease)}
.pill-card:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.pill-card:hover svg{transform:translateX(4px);color:var(--accent)}

/* ============ cta ============ */
.cta-band{
  background:linear-gradient(120deg,#231a3d 0%,var(--primary) 60%,#3F2C68 100%);
  color:#EDEAF2;padding:72px 0;
}
.cta-inner{display:grid;grid-template-columns:1.4fr .6fr;gap:40px;align-items:center}
.cta-inner h2{color:#fff}
.cta-inner p{margin-top:14px;font-size:16px;color:rgba(237,234,242,.82);max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.cta-note{margin-top:18px;font-size:13px;color:rgba(237,234,242,.6)}

/* ============ footer ============ */
.site-footer{background:#EFEBE6;border-top:1px solid var(--line);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo-text{font-size:16px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:var(--ink-500);max-width:320px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--ink-900);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:10px}
.footer-col a{
  position:relative;display:inline-block;
  font-size:14px;color:var(--ink-500);padding-left:0;
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-col a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:12px;background:var(--accent);border-radius:2px;
  opacity:0;transition:opacity .2s var(--ease);
}
.footer-col a:hover{color:var(--primary);padding-left:10px}
.footer-col a:hover::before{opacity:1}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--ink-500);
}
.footer-bottom a{color:var(--primary);border-bottom:1px solid rgba(46,31,77,.25)}

/* ============ mobile drawer ============ */
.drawer{
  position:fixed;inset:0;z-index:120;display:none;
}
.drawer.open{display:block}
.drawer-mask{position:absolute;inset:0;background:rgba(20,18,26,.55);backdrop-filter:blur(4px)}
.drawer-panel{
  position:absolute;left:0;top:0;bottom:0;width:min(320px,86vw);
  background:var(--bg);border-right:1px solid var(--line);
  padding:24px 22px;display:flex;flex-direction:column;gap:22px;
  animation:slideIn .26s var(--ease);
}
@keyframes slideIn{from{transform:translateX(-16px);opacity:.4}to{transform:none;opacity:1}}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-nav{display:grid;gap:6px}
.drawer-nav a{
  padding:13px 14px;border-radius:12px;font-size:15px;color:var(--ink-700);
  border:1px solid transparent;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.drawer-nav a:hover{background:var(--surface);border-color:var(--line);color:var(--primary)}
.drawer-nav a.active{background:var(--surface);border-color:var(--line);color:var(--primary);font-weight:600}
.drawer-foot{margin-top:auto;display:grid;gap:12px}

/* ============ motion ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* ============ responsive ============ */
@media (max-width:1279px){
  .container{padding:0 24px}
  .hero-grid{gap:40px}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-toggle{display:grid}
  .header-actions .btn{display:none}
  .hero{padding:48px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-panel{max-width:560px}
  .split{grid-template-columns:1fr;gap:32px}
  .split.reverse .split-media{order:0}
  .block-pair{gap:64px}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:64px 0}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  :root{--nav-h:56px}
  .logo-text{font-size:15px}
  .hero-stats{grid-template-columns:1fr;gap:16px}
  .risk-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .step{grid-template-columns:56px 1fr;gap:16px}
  .step-index{font-size:24px}
  .faq-trigger{font-size:16px;padding:18px 2px}
  .section{padding:48px 0}
  .section-tight{padding:44px 0}
  .section-head{margin-bottom:28px}
  .risk-item{padding:18px}
}
@media (max-width:479px){
  .hero-cta .btn,.cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .pill-card{padding:16px 20px}
}

/* roulang page: category3 */
:root{
  --bg:#F7F5F2;
  --surface:#FFFFFF;
  --line:#E6E2DD;
  --primary:#2E1F4D;
  --primary-hover:#3F2C68;
  --accent:#FF7A59;
  --support:#35D0A5;
  --ink-900:#14121A;
  --ink-700:#3A3546;
  --ink-500:#6B6577;
  --ink-300:#A9A4B4;
  --dark:#17141F;
  --dark-line:rgba(255,255,255,.10);
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --shadow-1:0 1px 2px rgba(20,18,26,.06);
  --shadow-2:0 12px 32px rgba(20,18,26,.10);
  --ease:cubic-bezier(.2,.8,.2,1);
  --header-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-900);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
.mono,[data-num]{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-1)}
.btn-outline{background:transparent;color:var(--ink-900);border:1.5px solid var(--ink-900)}
.btn-outline:hover{border-color:var(--accent);background:rgba(255,122,89,.08);color:var(--primary);transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#ff8d70;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--primary);
}
.text-link svg{transition:transform .2s var(--ease)}
.text-link:hover svg{transform:translateX(4px)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,242,.86);
  backdrop-filter:saturate(150%) blur(4px);
  -webkit-backdrop-filter:saturate(150%) blur(4px);
  border-bottom:1px solid transparent;
  transition:background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,245,242,.92);
  border-bottom-color:var(--line);
  box-shadow:0 1px 2px rgba(20,18,26,.06);
}
.header-inner{display:flex;align-items:center;gap:20px;height:var(--header-h)}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:16px;letter-spacing:-.01em;color:var(--ink-900)}
.logo-mark{
  width:34px;height:34px;border-radius:11px;
  display:grid;place-items:center;
  background:var(--primary);
  box-shadow:0 6px 16px rgba(46,31,77,.24);
  flex:none;
}
.logo-mark svg{width:20px;height:20px}
.logo-text{white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:6px}
.nav-link{
  padding:9px 14px;border-radius:999px;
  font-size:15px;color:var(--ink-700);font-weight:500;
  transition:color .18s var(--ease),background .18s var(--ease);
  white-space:nowrap;
}
.nav-link:hover{color:var(--primary);background:rgba(46,31,77,.06)}
.nav-link.active{color:var(--primary);background:rgba(46,31,77,.09);font-weight:700}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;border-radius:999px;border:1px solid var(--line);
  display:grid;place-items:center;background:var(--surface);color:var(--ink-700);
  transition:border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.icon-btn:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px)}
.menu-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:var(--surface);align-items:center;justify-content:center}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);position:relative}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900)}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;z-index:90;background:rgba(20,18,26,.45);
  opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s var(--ease);
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;left:0;bottom:0;z-index:95;
  width:min(84vw,340px);
  background:var(--surface);
  padding:22px 22px 32px;
  transform:translateX(-102%);
  transition:transform .26s var(--ease);
  display:flex;flex-direction:column;gap:6px;
  box-shadow:var(--shadow-2);
  overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-close{width:38px;height:38px;border-radius:999px;border:1px solid var(--line);display:grid;place-items:center;font-size:20px;line-height:1;color:var(--ink-700)}
.drawer .nav-link{display:block;padding:14px 12px;border-radius:12px;font-size:16px}
.drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(53,208,165,.14);color:#1F8E70;
  font-size:12px;font-weight:600;letter-spacing:.1em;
}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:clamp(26px,3.2vw,40px);font-weight:700;line-height:1.25;letter-spacing:-.01em;margin-top:16px}
.section-head p{margin-top:14px;color:var(--ink-500);font-size:16.5px}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- Hero ---------- */
.page-hero{padding:52px 0 84px;position:relative;overflow:hidden}
.page-hero::after{
  content:"";position:absolute;right:-160px;top:-120px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,89,.16),rgba(255,122,89,0) 66%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);margin-bottom:22px}
.breadcrumb a{color:var(--ink-500)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--ink-300)}
.page-hero h1{
  font-size:clamp(34px,5vw,58px);
  font-weight:800;line-height:1.12;letter-spacing:-.02em;
  margin-top:18px;
}
.hero-lede{margin-top:20px;font-size:17.5px;color:var(--ink-700);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-meta{display:flex;flex-wrap:wrap;gap:28px;margin-top:38px;padding-top:26px;border-top:1px solid var(--line)}
.hero-meta div strong{display:block;font-size:24px;font-weight:800;color:var(--primary);letter-spacing:-.01em}
.hero-meta div span{font-size:13px;color:var(--ink-500)}
.hero-visual{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-2)}
.hero-visual img{width:100%;height:min(56vh,460px);object-fit:cover}
.hero-visual::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(46,31,77,.10),rgba(23,20,31,.62));
}
.hero-float{
  position:absolute;left:20px;right:20px;bottom:20px;z-index:2;
  background:rgba(255,255,255,.94);border-radius:var(--radius);
  padding:16px 18px;display:flex;align-items:center;gap:12px;
  animation:floatY 6s ease-in-out infinite;
}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
.hero-float .badge{background:rgba(53,208,165,.16);color:#1F8E70;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.06em}
.hero-float p{font-size:13.5px;color:var(--ink-700);line-height:1.5}

/* ---------- 快速排查卡 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.check-card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px 24px;overflow:hidden;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.check-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent);
  transform:scaleY(0);transform-origin:top;transition:transform .24s var(--ease);
}
.check-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(46,31,77,.16)}
.check-card:hover::before{transform:scaleY(1)}
.check-card .num{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.1em}
.check-card h3{font-size:18px;font-weight:700;margin-top:12px;line-height:1.45}
.check-card p{margin-top:10px;font-size:14.5px;color:var(--ink-500);line-height:1.75}

/* ---------- FAQ ---------- */
.pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.pill{
  padding:9px 18px;border-radius:999px;border:1px solid var(--line);background:var(--surface);
  font-size:14px;color:var(--ink-700);font-weight:500;
  transition:all .2s var(--ease);
}
.pill:hover{border-color:var(--primary);color:var(--primary)}
.pill.is-active{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item.is-hidden{display:none}
.faq-toggle{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 4px;text-align:left;font-size:19px;font-weight:600;color:var(--ink-900);
  transition:color .18s var(--ease);
}
.faq-toggle:hover{color:var(--primary)}
.faq-icon{
  flex:none;width:30px;height:30px;border-radius:999px;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--ink-500);
  transition:transform .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--accent);border-color:var(--accent);color:#fff}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .22s var(--ease)}
.faq-item.open .faq-answer{max-height:420px}
.faq-answer-inner{padding:0 56px 26px 4px;color:var(--ink-500);font-size:16px;line-height:1.85}
.faq-answer-inner strong{color:var(--ink-900);font-weight:600}

/* ---------- 图文核对清单 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split.reverse .split-media{order:2}
.split-media{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-2);position:relative}
.split-media img{width:100%;height:400px;object-fit:cover}
.split-media figcaption{
  position:absolute;left:16px;bottom:16px;
  background:rgba(23,20,31,.78);color:#EDEAF2;
  font-size:12.5px;padding:7px 14px;border-radius:999px;letter-spacing:.04em;
}
.list-checks li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);
  font-size:15.5px;color:var(--ink-700);
}
.list-checks li:last-child{border-bottom:0}
.list-checks .mark{
  flex:none;width:22px;height:22px;border-radius:7px;background:rgba(53,208,165,.16);
  display:grid;place-items:center;color:#1F8E70;font-size:12px;font-weight:700;margin-top:4px;
}
.list-checks li b{color:var(--ink-900);font-weight:600}

/* ---------- 互链胶囊 ---------- */
.link-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.link-card{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:var(--surface);border:1px solid var(--line);border-radius:999px;
  padding:18px 22px;transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.link-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(46,31,77,.2)}
.link-card .tag{font-size:11.5px;color:var(--ink-500);letter-spacing:.1em;display:block}
.link-card strong{font-size:16px;font-weight:700;color:var(--ink-900)}
.link-card .arrow{flex:none;width:34px;height:34px;border-radius:999px;background:rgba(46,31,77,.07);display:grid;place-items:center;color:var(--primary);transition:background .2s var(--ease),transform .2s var(--ease)}
.link-card:hover .arrow{background:var(--accent);color:#fff;transform:translateX(3px)}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:var(--dark);color:#EDEAF2;border-radius:24px;
  padding:64px 56px;display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;bottom:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,89,.28),rgba(255,122,89,0) 68%);
}
.cta-band h2{font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.3;letter-spacing:-.01em}
.cta-band p{margin-top:14px;color:rgba(237,234,242,.72);font-size:16px;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1}
.cta-band .btn-outline{color:#EDEAF2;border-color:rgba(255,255,255,.36)}
.cta-band .btn-outline:hover{background:rgba(255,122,89,.14);border-color:var(--accent);color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#EDEAF2;margin-top:96px;padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{color:#fff;margin-bottom:18px}
.footer-brand .logo-mark{background:rgba(255,255,255,.08);box-shadow:none;border:1px solid var(--dark-line)}
.footer-brand p{color:rgba(237,234,242,.66);font-size:14.5px;line-height:1.85;max-width:340px}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.08em;color:#fff;margin-bottom:18px}
.footer-col ul li{margin-bottom:11px}
.footer-col ul li a{
  font-size:14.5px;color:rgba(237,234,242,.66);
  transition:color .18s var(--ease),padding-left .18s var(--ease);
  border-left:2px solid transparent;padding-left:0;
}
.footer-col ul li a:hover{color:#fff;border-left-color:var(--accent);padding-left:8px}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--dark-line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(237,234,242,.55);
}
.footer-bottom a{color:rgba(237,234,242,.75)}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}
.stagger > *{opacity:0;transform:translateY(14px);transition:opacity .45s var(--ease),transform .45s var(--ease)}
.stagger.in > *{opacity:1;transform:none}
.stagger.in > *:nth-child(1){transition-delay:0ms}
.stagger.in > *:nth-child(2){transition-delay:60ms}
.stagger.in > *:nth-child(3){transition-delay:120ms}
.stagger.in > *:nth-child(4){transition-delay:180ms}
.stagger.in > *:nth-child(5){transition-delay:240ms}
.stagger.in > *:nth-child(6){transition-delay:300ms}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .check-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1024px){
  .nav-links{display:none}
  .menu-toggle{display:flex}
  .section{padding:80px 0}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .page-hero{padding:36px 0 64px}
  .hero-visual img{height:340px}
  .hero-actions .btn{flex:1 1 auto}
  .cta-band{grid-template-columns:1fr;padding:48px 36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:64px 0}
  .section--tight{padding:52px 0}
  .check-grid{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:32px}
  .split.reverse .split-media{order:0}
  .split-media img{height:260px}
  .link-grid{grid-template-columns:1fr}
  .faq-toggle{font-size:17px;padding:20px 2px}
  .faq-answer-inner{padding:0 4px 22px}
  .hero-meta{gap:20px}
  .hero-meta div strong{font-size:21px}
  .cta-band{padding:40px 24px;border-radius:20px}
  .site-footer{margin-top:64px;padding:56px 0 24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:479px){
  .header-actions .btn{display:none}
  .logo-text{font-size:14.5px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .page-hero h1{font-size:30px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal,.stagger > *{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --bg:#F7F5F2;
  --surface:#FFFFFF;
  --line:#E6E2DD;
  --primary:#2E1F4D;
  --primary-hover:#3F2C68;
  --accent:#FF7A59;
  --support:#35D0A5;
  --ink-900:#14121A;
  --ink-700:#3A3546;
  --ink-500:#6B6577;
  --ink-300:#A9A4B4;
  --dark:#17141F;
  --dark-line:rgba(255,255,255,.10);
  --r-lg:20px;
  --r:16px;
  --r-sm:12px;
  --sh-1:0 1px 2px rgba(20,18,26,.06);
  --sh-2:0 12px 32px rgba(20,18,26,.10);
  --ease:cubic-bezier(.2,.8,.2,1);
  --nav-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-900);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";letter-spacing:.01em}

/* ============ header / nav ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,242,.94);
  border-bottom:1px solid var(--line);
  transition:background .22s var(--ease),box-shadow .22s var(--ease),backdrop-filter .22s var(--ease);
}
.site-header.scrolled{
  background:rgba(247,245,242,.92);
  backdrop-filter:blur(4px);
  -webkit-backdrop-filter:blur(4px);
  box-shadow:0 1px 0 rgba(20,18,26,.04),0 8px 24px rgba(20,18,26,.05);
}
.nav-inner{
  height:var(--nav-h);
  display:flex;align-items:center;gap:24px;
}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--primary);
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-1);
}
.logo-mark svg{width:20px;height:20px}
.logo-text{
  font-size:16px;font-weight:700;letter-spacing:-.01em;color:var(--ink-900);
  white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  border-radius:999px;
  font-size:14.5px;
  color:var(--ink-700);
  transition:color .2s var(--ease),background .2s var(--ease);
  white-space:nowrap;
}
.nav-link:hover{color:var(--primary);background:rgba(46,31,77,.06)}
.nav-link.active{color:var(--primary);font-weight:600;background:rgba(46,31,77,.08)}
.nav-link.active::after{
  content:"";position:absolute;left:50%;bottom:1px;transform:translateX(-50%);
  width:16px;height:2px;border-radius:2px;background:var(--accent);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.icon-btn{
  width:38px;height:38px;border-radius:999px;border:1px solid var(--line);
  background:var(--surface);display:flex;align-items:center;justify-content:center;
  color:var(--ink-700);transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{border-color:var(--accent);color:var(--primary);transform:translateY(-1px)}
.icon-btn svg{width:17px;height:17px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-sm);
  padding:14px 24px;
  font-size:15px;font-weight:600;
  border:1.5px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:transparent;color:var(--ink-900);border-color:var(--ink-900)}
.btn-ghost:hover{border-color:var(--accent);background:rgba(255,122,89,.10);color:var(--primary)}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline-light:hover{border-color:var(--accent);background:rgba(255,122,89,.14)}
.btn-pill{border-radius:999px;padding:11px 20px;font-size:14px}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed}
.nav-toggle{
  display:none;width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);align-items:center;justify-content:center;color:var(--ink-900);
}
.nav-toggle svg{width:18px;height:18px}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,18,26,.5);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:min(86vw,340px);z-index:90;
  background:var(--surface);border-right:1px solid var(--line);
  transform:translateX(-102%);transition:transform .26s var(--ease);
  display:flex;flex-direction:column;padding:20px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{
  width:34px;height:34px;border-radius:10px;border:1px solid var(--line);background:#fff;
  display:flex;align-items:center;justify-content:center;color:var(--ink-700);
}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:20px}
.drawer-nav a{
  padding:12px 14px;border-radius:var(--r-sm);font-size:15.5px;color:var(--ink-700);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.drawer-nav a:hover{background:rgba(46,31,77,.06);color:var(--primary)}
.drawer-nav a.active{background:rgba(46,31,77,.09);color:var(--primary);font-weight:600}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px}

/* ============ hero banner ============ */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--dark);
  color:#EDEAF2;
  padding:64px 0 72px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.42;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(23,20,31,.94) 0%,rgba(23,20,31,.82) 46%,rgba(46,31,77,.5) 100%);
}
.page-hero .container{position:relative;z-index:2}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(237,234,242,.66);margin-bottom:20px;
}
.crumbs a{transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--accent)}
.crumbs span.sep{color:rgba(237,234,242,.36)}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  border:1px solid var(--dark-line);
  background:rgba(255,255,255,.06);
  font-size:12px;font-weight:500;letter-spacing:.1em;color:#EDEAF2;margin-bottom:18px;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--support);display:inline-block}
.page-hero h1{
  font-size:clamp(34px,5vw,58px);font-weight:800;line-height:1.12;letter-spacing:-.02em;
  max-width:16em;margin-bottom:18px;
}
.page-hero h1 em{font-style:normal;color:var(--accent)}
.hero-lead{
  font-size:17px;line-height:1.85;color:rgba(237,234,242,.82);
  max-width:64ch;margin-bottom:26px;
}
.hero-meta{display:flex;flex-wrap:wrap;gap:26px;margin-bottom:28px}
.hero-meta div{font-size:13px;color:rgba(237,234,242,.7)}
.hero-meta strong{
  display:block;font-size:26px;font-weight:700;color:#fff;line-height:1.3;
  font-variant-numeric:tabular-nums;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}

/* ============ sections ============ */
.section{padding:96px 0}
.section-sm{padding:64px 0}
.section-head{margin-bottom:36px;max-width:760px}
.section-head h2{
  font-size:clamp(26px,3.2vw,40px);font-weight:700;color:var(--ink-900);margin-bottom:14px;
}
.section-head p{color:var(--ink-500);font-size:16px;line-height:1.85}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.14em;
  color:var(--primary);background:rgba(46,31,77,.08);
  padding:5px 12px;border-radius:999px;margin-bottom:14px;
}

/* filter pills */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;
}
.pill{
  padding:9px 18px;border-radius:999px;border:1px solid var(--line);background:var(--surface);
  font-size:14px;color:var(--ink-700);transition:all .2s var(--ease);
}
.pill:hover{border-color:var(--accent);color:var(--primary);transform:translateY(-1px)}
.pill.active{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600}

/* news grid */
.news-grid{
  display:grid;gap:24px;
  grid-template-columns:repeat(3,minmax(0,1fr));
}
.news-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#DCD6CF}
.news-cover{
  position:relative;aspect-ratio:16/10;overflow:hidden;background:linear-gradient(140deg,#EFEBE6,#E1DBD4);
}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-body{padding:22px 22px 20px;display:flex;flex-direction:column;gap:12px;flex:1}
.chip{
  align-self:flex-start;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  padding:4px 11px;border-radius:999px;
  background:rgba(53,208,165,.16);color:#1D7D62;
}
.chip.warn{background:rgba(255,122,89,.16);color:#B4451F}
.chip.plain{background:rgba(46,31,77,.08);color:var(--primary)}
.news-card h3{
  font-size:19px;font-weight:600;color:var(--ink-900);line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card p{
  font-size:14.5px;color:var(--ink-500);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-300);
}
.arrow-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:14px}
.arrow-link svg{width:15px;height:15px;transition:transform .2s var(--ease)}
.news-card:hover .arrow-link svg,.arrow-link:hover svg{transform:translateX(4px)}

/* pagination */
.pager{
  margin-top:44px;display:flex;justify-content:center;align-items:center;gap:8px;flex-wrap:wrap;
}
.pager a,.pager span{
  min-width:42px;height:42px;padding:0 14px;border-radius:var(--r-sm);
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:var(--surface);
  font-size:14px;color:var(--ink-700);font-variant-numeric:tabular-nums;
  transition:all .2s var(--ease);
}
.pager a:hover{border-color:var(--accent);color:var(--primary);transform:translateY(-1px)}
.pager .current{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600}
.pager .disabled{opacity:.45;cursor:not-allowed}
.pager-note{text-align:center;margin-top:14px;font-size:13px;color:var(--ink-300)}

/* steps */
.steps{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;
}
.step{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r);padding:28px 24px 26px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.step-num{
  font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.12em;
  font-variant-numeric:tabular-nums;margin-bottom:14px;display:block;
}
.step h3{font-size:19px;font-weight:600;margin-bottom:10px}
.step p{font-size:14.5px;color:var(--ink-500);line-height:1.8}
.step::before{
  content:"";position:absolute;left:0;top:24px;bottom:24px;width:3px;border-radius:3px;
  background:var(--primary);opacity:.16;
}

/* highlight block */
.highlight{
  display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:stretch;
}
.hl-card{
  position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  min-height:320px;display:flex;align-items:flex-end;
  box-shadow:var(--sh-1);
}
.hl-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hl-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(23,20,31,.10) 0%,rgba(23,20,31,.86) 100%);
}
.hl-content{position:relative;z-index:2;padding:28px 26px;color:#EDEAF2}
.hl-content h3{font-size:23px;font-weight:600;margin-bottom:10px;line-height:1.4}
.hl-content p{font-size:14.5px;color:rgba(237,234,242,.8);line-height:1.8}
.hl-list{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px 26px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:18px;
}
.hl-list h3{font-size:19px;font-weight:600}
.hl-item{display:flex;gap:14px;align-items:flex-start}
.hl-item .dot{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:rgba(46,31,77,.08);
  color:var(--primary);display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
}
.hl-item h4{font-size:15.5px;font-weight:600;margin-bottom:4px}
.hl-item p{font-size:14px;color:var(--ink-500);line-height:1.75}

/* dark stats */
.stats-band{background:var(--dark);color:#EDEAF2;padding:80px 0}
.stats-band h2{font-size:clamp(24px,3vw,36px);font-weight:700;margin-bottom:14px}
.stats-band .lead{color:rgba(237,234,242,.7);font-size:16px;max-width:62ch;margin-bottom:44px}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;
  border-top:1px solid var(--dark-line);
}
.stat{
  padding:30px 22px 4px;border-right:1px solid var(--dark-line);
}
.stat:last-child{border-right:none}
.stat strong{
  display:block;font-size:clamp(30px,3.6vw,46px);font-weight:800;line-height:1.1;
  color:#fff;font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.stat strong span{font-size:16px;font-weight:600;color:var(--accent);margin-left:4px;letter-spacing:0}
.stat p{margin-top:10px;font-size:13.5px;color:rgba(237,234,242,.66);line-height:1.7}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:44px;align-items:start}
.faq-intro h2{font-size:clamp(24px,3vw,36px);font-weight:700;margin-bottom:14px}
.faq-intro p{color:var(--ink-500);font-size:15.5px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:none;padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  text-align:left;font-size:17px;font-weight:600;color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:999px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--primary);
  transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.faq-item.open .faq-icon{transform:rotate(45deg);border-color:var(--accent);background:rgba(255,122,89,.12)}
.faq-icon svg{width:13px;height:13px}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .22s var(--ease),opacity .22s var(--ease),padding .22s var(--ease);
  opacity:0;
}
.faq-item.open .faq-a{opacity:1;padding-bottom:20px}
.faq-a p{font-size:15.5px;color:var(--ink-500);line-height:1.85;max-width:64ch}

/* related categories */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.related{
  display:flex;flex-direction:column;gap:10px;
  background:var(--surface);border:1px solid var(--line);border-radius:999px;
  padding:18px 26px;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.related:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#DCD6CF}
.related strong{font-size:16.5px;font-weight:600;color:var(--ink-900)}
.related span{font-size:13.5px;color:var(--ink-500);line-height:1.7}
.related em{
  font-style:normal;font-size:13px;font-weight:600;color:var(--primary);
  display:inline-flex;align-items:center;gap:6px;
}
.related em svg{width:14px;height:14px;transition:transform .2s var(--ease)}
.related:hover em svg{transform:translateX(4px)}

/* CTA band */
.cta-band{
  background:linear-gradient(120deg,var(--primary) 0%,#241641 58%,#1B102F 100%);
  color:#fff;padding:76px 0;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,89,.28),rgba(255,122,89,0) 70%);
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between}
.cta-inner h2{font-size:clamp(24px,3vw,38px);font-weight:700;margin-bottom:12px;max-width:20em}
.cta-inner p{color:rgba(255,255,255,.78);font-size:16px;max-width:52ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* footer */
.site-footer{background:var(--bg);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;
  padding-bottom:44px;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--ink-500);line-height:1.8;max-width:38ch}
.footer-col h4{font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{
  position:relative;font-size:14px;color:var(--ink-500);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-col a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:0;border-radius:2px;background:var(--accent);
  transition:height .2s var(--ease);
}
.footer-col a:hover{color:var(--primary);padding-left:10px}
.footer-col a:hover::before{height:14px}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--ink-300);
}
.footer-bottom a{color:var(--ink-500)}
.footer-bottom a:hover{color:var(--primary)}

/* reveal */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.visible{opacity:1;transform:none}

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

/* breakpoints */
@media (max-width:1279px){
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  :root{--nav-h:60px}
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .section{padding:72px 0}
  .page-hero{padding:52px 0 60px}
  .highlight{grid-template-columns:1fr}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .steps{grid-template-columns:1fr;gap:18px}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat{border-right:none;border-bottom:1px solid var(--dark-line);padding:26px 18px}
  .stat:nth-child(odd){border-right:1px solid var(--dark-line)}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-sm{padding:44px 0}
  .news-grid{grid-template-columns:1fr}
  .page-hero h1{font-size:clamp(30px,8vw,38px)}
  .hero-meta{gap:18px}
  .hero-meta strong{font-size:22px}
  .stats-band{padding:56px 0}
  .cta-band{padding:56px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding-bottom:32px}
  .footer-brand{grid-column:1 / -1}
  .btn{width:100%}
  .hero-cta .btn{width:100%}
  .cta-actions{width:100%}
}
@media (max-width:479px){
  .logo-text{font-size:14.5px}
  .icon-btn{width:34px;height:34px}
  .news-body{padding:18px}
}