/* roulang page: index */
/* ===================== 设计变量 ===================== */
:root{
  --ink-900:#12100E;--ink-700:#2A2723;--ink-500:#57534C;--ink-300:#8C867D;
  --brand-900:#0E3A33;--brand-700:#14544A;--brand-100:#DDE7E3;
  --accent-600:#D0613A;--accent-500:#E4764C;
  --sand-50:#FBF8F3;--sand-100:#F4EFE6;--sand-200:#E8E0D2;
  --line:#E2DACB;--white:#FFFFFF;
  --err:#B23A2E;--ok:#2F7D5B;
  --r-card:16px;--r-img:14px;--r-btn:8px;
  --sh-1:0 1px 2px rgba(20,16,12,.05);
  --sh-2:0 14px 34px -14px rgba(20,16,12,.16);
  --ease:cubic-bezier(.22,.61,.36,1);
}
/* ===================== 基础重置 ===================== */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--sand-50);color:var(--ink-700);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.85;text-align:left;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
h1,h2,h3,h4,h5,h6{margin:0;color:var(--ink-900);font-family:inherit;font-weight:700;line-height:1.2;letter-spacing:-.01em}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
a{color:var(--brand-900);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--accent-600)}
img{max-width:100%;display:block;height:auto}
ul,ol{margin:0;padding:0;list-style:none}
button,input,textarea,select{font-family:inherit;font-size:100%}
:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand-100);color:var(--brand-900)}
/* 覆盖 Foundation 默认 */
body,.button,button,.accordion,.tabs,.card{font-family:inherit}
.button{background:var(--brand-900);color:#fff;border-radius:var(--r-btn)}
.button:hover{background:var(--accent-600);color:#fff}
.grid-container{max-width:1240px;padding-left:20px;padding-right:20px}
@media (min-width:768px){.grid-container{padding-left:24px;padding-right:24px}}
@media (min-width:1024px){.grid-container{padding-left:32px;padding-right:32px}}
/* ===================== 通用组件 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;white-space:nowrap;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary{background:var(--brand-900);color:#fff}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-ghost{background:transparent;color:var(--ink-900);border-color:var(--ink-900)}
.btn-ghost:hover{background:var(--ink-900);color:#fff}
.btn-light{background:#fff;color:var(--brand-900)}
.btn-light:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-lg{padding:16px 34px;font-size:16px}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;position:relative;
  color:var(--brand-900);font-weight:600;font-size:15px;background:none;border:0;padding:4px 0;cursor:pointer;
}
.btn-text::after{content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--accent-600);transition:width .2s var(--ease)}
.btn-text:hover{color:var(--accent-600)}
.btn-text:hover::after{width:100%}
.badge{
  display:inline-block;padding:4px 12px;border-radius:999px;background:var(--brand-100);
  color:var(--brand-900);font-size:12px;font-weight:600;letter-spacing:.02em;line-height:1.6;
}
.badge-accent{background:rgba(208,97,58,.12);color:var(--accent-600)}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;
  letter-spacing:.14em;color:var(--ink-300);text-transform:uppercase;margin-bottom:16px;
}
.eyebrow::before{content:"";width:28px;height:2px;background:var(--accent-600);display:inline-block}
.section{padding:96px 0;scroll-margin-top:96px}
.section-tight{padding:72px 0;scroll-margin-top:96px}
.section-sand{background:var(--sand-100)}
.section-dark{background:var(--brand-900);color:var(--sand-100);scroll-margin-top:96px}
.section-dark h2,.section-dark h3{color:#fff}
.section-dark .eyebrow{color:rgba(244,239,230,.6)}
.section-head{max-width:760px;margin-bottom:48px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-title{font-size:clamp(24px,3.2vw,40px);font-weight:700;margin-bottom:14px}
.section-sub{font-size:16px;color:var(--ink-500);line-height:1.8;max-width:640px}
.section-dark .section-sub{color:rgba(244,239,230,.72)}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
/* ===================== 顶部导航 ===================== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(251,248,243,.92);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;transition:height .25s var(--ease),border-color .25s var(--ease),background .25s var(--ease);
}
.site-header.is-compact{background:rgba(251,248,243,.95);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px;transition:height .25s var(--ease)}
.site-header.is-compact .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:10px;background:var(--brand-900);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em}
.brand-text em{font-style:normal;font-size:11px;color:var(--ink-300);letter-spacing:.04em}
.main-nav{display:none;align-items:center;gap:6px}
.main-nav a{
  position:relative;padding:10px 14px;border-radius:8px;font-size:15px;font-weight:500;color:var(--ink-700);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.main-nav a:hover{color:var(--brand-900);background:var(--sand-100)}
.main-nav a.is-active{color:var(--brand-900);font-weight:600}
.main-nav a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;background:var(--accent-600);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px}
.header-actions .btn-primary{display:none}
@media (min-width:1024px){
  .main-nav{display:flex}
  .header-actions .btn-primary{display:inline-flex}
}
.nav-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;padding:0 11px;
}
.nav-toggle span{display:block;height:2px;background:var(--ink-900);border-radius:2px;transition:transform .25s var(--ease),opacity .25s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media (min-width:1024px){.nav-toggle{display:none}}
.scroll-progress{position:absolute;left:0;bottom:-1px;width:100%;height:2px;background:transparent}
.scroll-progress span{display:block;height:2px;width:0;background:var(--accent-600);transition:width .1s linear}
/* 抽屉 */
.drawer{
  position:fixed;top:72px;left:0;right:0;z-index:990;background:#fff;border-bottom:1px solid var(--line);
  padding:16px 20px 24px;transform:translateY(-12px);opacity:0;visibility:hidden;transition:all .25s var(--ease);
  box-shadow:var(--sh-2);
}
.drawer.is-open{transform:translateY(0);opacity:1;visibility:visible}
.drawer a{display:block;padding:14px 4px;border-bottom:1px solid var(--line);font-size:16px;font-weight:500;color:var(--ink-700)}
.drawer a:last-child{border-bottom:0}
.drawer a.is-active{color:var(--accent-600);font-weight:600}
.drawer .btn{width:100%;margin-top:14px}
@media (min-width:1024px){.drawer{display:none}}
/* ===================== 首屏 ===================== */
.hero{
  position:relative;min-height:82vh;display:flex;align-items:center;padding:132px 0 72px;
  background:linear-gradient(rgba(14,58,51,.78),rgba(14,58,51,.86)),url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  color:#fff;overflow:hidden;scroll-margin-top:96px;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.35) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.35) 1px,transparent 1px);
  background-size:48px 48px;opacity:.04;
}
.hero .grid-container{position:relative;z-index:2}
.hero-title{
  font-size:clamp(32px,5.6vw,62px);font-weight:800;line-height:1.12;letter-spacing:-.02em;color:#fff;
  max-width:16em;margin-bottom:24px;
}
.hero-title .hl{color:var(--accent-500)}
.hero-sub{font-size:clamp(16px,1.6vw,19px);color:rgba(244,239,230,.82);max-width:34em;margin-bottom:36px;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:56px}
.hero-stats{display:flex;flex-wrap:wrap;gap:40px;padding-top:32px;border-top:1px solid rgba(244,239,230,.18)}
.hero-stat .num{font-size:clamp(28px,3.6vw,40px);font-weight:800;color:#fff;font-variant-numeric:tabular-nums;line-height:1.1}
.hero-stat .lab{font-size:13px;color:rgba(244,239,230,.62);letter-spacing:.06em;margin-top:6px}
/* ===================== 卖点非对称栅格 ===================== */
.hl-big{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);height:100%;display:flex;flex-direction:column;transition:box-shadow .24s var(--ease),transform .24s var(--ease);
}
.hl-big:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.hl-big .media{aspect-ratio:16/10;overflow:hidden;background:var(--sand-200)}
.hl-big .media img{width:100%;height:100%;object-fit:cover;transition:transform .26s var(--ease)}
.hl-big:hover .media img{transform:scale(1.03)}
.hl-big .body{padding:26px 28px 30px}
.hl-big h3{font-size:20px;margin-bottom:12px}
.hl-big p{color:var(--ink-500);font-size:15px}
.hl-col{display:flex;flex-direction:column;gap:24px;height:100%}
.hl-small{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px 26px 28px;
  box-shadow:var(--sh-1);flex:1;transition:box-shadow .24s var(--ease),transform .24s var(--ease);
}
.hl-small:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.hl-icon{
  width:40px;height:40px;border-radius:10px;background:var(--sand-100);color:var(--brand-900);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;font-size:18px;
}
.hl-small h3{font-size:18px;margin-bottom:10px}
.hl-small p{color:var(--ink-500);font-size:15px;line-height:1.8}
/* ===================== 演示区 Tabs ===================== */
.demo-tabs{margin-bottom:28px;display:flex;flex-wrap:wrap;gap:8px}
.demo-tabs .tabs-title{float:none}
.demo-tabs .tabs-title>a{
  background:rgba(255,255,255,.08);color:rgba(244,239,230,.75);border-radius:var(--r-btn);
  padding:11px 20px;font-size:15px;font-weight:500;transition:all .22s var(--ease);display:block;
}
.demo-tabs .tabs-title>a:hover{background:rgba(255,255,255,.16);color:#fff}
.demo-tabs .tabs-title.is-active>a{background:var(--accent-600);color:#fff}
.tabs-content{border:0;background:transparent;margin:0}
.tabs-panel{padding:0}
.demo-frame{
  border-radius:var(--r-img);overflow:hidden;border:1px solid rgba(244,239,230,.16);
  aspect-ratio:16/9;background:rgba(0,0,0,.25);
}
.demo-frame img{width:100%;height:100%;object-fit:cover;opacity:.92}
.demo-points{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.demo-points li{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;color:rgba(244,239,230,.85);
  background:rgba(255,255,255,.06);border:1px solid rgba(244,239,230,.14);border-radius:999px;padding:8px 16px;
}
.demo-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-500)}
/* ===================== 证据区 ===================== */
.metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-bottom:52px}
@media (min-width:768px){.metrics{grid-template-columns:repeat(4,1fr)}}
.metric{border-left:2px solid var(--sand-200);padding-left:18px}
.metric .num{font-size:clamp(40px,7vw,72px);font-weight:800;line-height:1;color:var(--brand-900);font-variant-numeric:tabular-nums}
.metric .lab{font-size:14px;color:var(--ink-500);margin-top:10px}
.proof-strip{
  display:flex;gap:20px;overflow-x:auto;padding:4px 4px 20px;scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;scrollbar-width:thin;
}
.proof-strip::-webkit-scrollbar{height:6px}
.proof-strip::-webkit-scrollbar-thumb{background:var(--sand-200);border-radius:6px}
.proof-card{
  flex:0 0 84%;scroll-snap-align:start;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);
}
@media (min-width:768px){.proof-card{flex:0 0 340px}}
.proof-card blockquote{margin:0 0 18px;font-size:16px;color:var(--ink-700);line-height:1.85}
.proof-card .from{font-size:13px;color:var(--ink-300);letter-spacing:.04em}
/* ===================== 内容卡片 ===================== */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  height:100%;display:flex;flex-direction:column;box-shadow:var(--sh-1);
  transition:box-shadow .24s var(--ease),transform .24s var(--ease);
}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.card-media{aspect-ratio:16/10;overflow:hidden;background:var(--sand-200)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .26s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.card-body .badge{align-self:flex-start;margin-bottom:14px}
.card-title{font-size:18px;font-weight:600;line-height:1.35;margin-bottom:10px}
.card-title a{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--ink-900);
}
.card-title a:hover{color:var(--accent-600)}
.card-text{
  font-size:14.5px;color:var(--ink-500);line-height:1.8;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.meta-row{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--ink-300);border-top:1px solid var(--line);padding-top:14px;
}
.meta-time{font-variant-numeric:tabular-nums}
.grid-gap{margin-top:-24px}
.grid-gap>.cell{margin-top:24px}
/* ===================== 价格 ===================== */
.price-list{display:flex;flex-direction:column;gap:20px}
.price-row{
  position:relative;display:grid;grid-template-columns:1fr;gap:20px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:30px 28px;box-shadow:var(--sh-1);transition:box-shadow .24s var(--ease);
}
.price-row:hover{box-shadow:var(--sh-2)}
@media (min-width:768px){
  .price-row{grid-template-columns:1.6fr .8fr;align-items:center;gap:32px;padding:34px 36px}
}
.price-row.featured{border-color:var(--accent-600);border-width:1px}
.price-row.featured::before{
  content:"推荐方案";position:absolute;top:-12px;left:28px;background:var(--accent-600);color:#fff;
  font-size:12px;font-weight:600;padding:4px 14px;border-radius:999px;letter-spacing:.04em;
}
.price-name{font-size:19px;font-weight:700;color:var(--ink-900);margin-bottom:8px}
.price-desc{font-size:14.5px;color:var(--ink-500);margin-bottom:16px}
.price-feats{display:flex;flex-wrap:wrap;gap:10px 22px}
.price-feats li{position:relative;padding-left:18px;font-size:14px;color:var(--ink-700)}
.price-feats li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--accent-600)}
.price-side{display:flex;flex-direction:column;align-items:flex-start;gap:16px}
@media (min-width:768px){.price-side{align-items:flex-end;text-align:right}}
.price-num{font-size:clamp(32px,4vw,46px);font-weight:800;color:var(--brand-900);line-height:1;font-variant-numeric:tabular-nums}
.price-num small{font-size:14px;font-weight:500;color:var(--ink-300);margin-left:6px}
/* ===================== FAQ ===================== */
.accordion{background:transparent;border:0;margin:0}
.accordion-item{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}
.accordion-item:last-child{margin-bottom:0}
.accordion-title{
  position:relative;display:block;padding:20px 56px 20px 22px;font-size:16.5px;font-weight:600;color:var(--ink-900);
  border:0;background:#fff;transition:color .2s var(--ease),background .2s var(--ease);
}
.accordion-title::before{display:none}
.accordion-title::after{
  content:"";position:absolute;right:22px;top:50%;width:14px;height:14px;margin-top:-7px;
  background:linear-gradient(var(--accent-600),var(--accent-600)) center/14px 2px no-repeat,
             linear-gradient(var(--accent-600),var(--accent-600)) center/2px 14px no-repeat;
  transition:transform .3s var(--ease);
}
.accordion-title[aria-expanded="true"]::after{transform:rotate(180deg)}
.accordion-title:hover{color:var(--accent-600);background:#fff}
.accordion-content{border:0;padding:0 22px 22px;color:var(--ink-500);font-size:15px;line-height:1.85}
.accordion-content p{color:var(--ink-500)}
.faq-side h2{margin-bottom:14px}
.faq-side p{color:var(--ink-500);font-size:15px;margin-bottom:20px}
/* ===================== 联系与表单 ===================== */
.contact-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:34px 28px;box-shadow:var(--sh-1)}
@media (min-width:768px){.contact-wrap{padding:44px 44px 46px}}
.contact-list li{
  display:flex;gap:14px;align-items:flex-start;padding:14px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink-700);
}
.contact-list li:last-child{border-bottom:0}
.contact-list .ic{
  flex:0 0 34px;width:34px;height:34px;border-radius:9px;background:var(--sand-100);color:var(--brand-900);
  display:flex;align-items:center;justify-content:center;font-size:15px;
}
.field{position:relative;margin-bottom:26px}
.field label{
  display:block;font-size:13px;color:var(--ink-300);margin-bottom:6px;letter-spacing:.02em;
}
.field input,.field textarea{
  width:100%;border:0;border-bottom:1px solid var(--line);background:transparent;padding:10px 2px;
  font-size:15.5px;color:var(--ink-900);border-radius:0;transition:border-color .2s var(--ease);resize:vertical;
}
.field input::placeholder,.field textarea::placeholder{color:#B8B2A8}
.field input:focus,.field textarea:focus{outline:none;border-bottom-color:var(--accent-600)}
.field .hint{font-size:12.5px;color:var(--ink-300);margin-top:6px}
.form-note{font-size:13px;color:var(--ink-300);margin-top:16px}
.form-note.ok{color:var(--ok)}
.form-note.err{color:var(--err)}
/* ===================== 页脚 ===================== */
.site-footer{background:var(--brand-900);color:rgba(244,239,230,.72);padding:72px 0 26px;font-size:14.5px}
.footer-brand strong{display:block;font-size:19px;color:#fff;margin-bottom:12px;letter-spacing:-.01em}
.footer-brand p{color:rgba(244,239,230,.6);font-size:14px;line-height:1.85;max-width:26em}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.06em;font-weight:600}
.footer-col li{margin-bottom:10px}
.footer-col a{color:rgba(244,239,230,.72);font-size:14px}
.footer-col a:hover{color:var(--accent-500)}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(244,239,230,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(244,239,230,.5);
}
/* ===================== 浮动 CTA / 底部 Tab ===================== */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:880;opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
}
.float-cta.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:900;display:flex;background:rgba(255,255,255,.97);
  border-top:1px solid var(--line);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tabbar a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  padding:9px 2px 8px;font-size:11px;color:var(--ink-300);position:relative;transition:color .2s var(--ease);
}
.mobile-tabbar a svg{width:21px;height:21px;stroke:currentColor;stroke-width:1.5;fill:none;stroke-linecap:round;stroke-linejoin:round}
.mobile-tabbar a.is-active{color:var(--accent-600)}
.mobile-tabbar a.is-active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:26px;height:2px;background:var(--accent-600);border-radius:2px}
@media (min-width:1024px){.mobile-tabbar{display:none}.float-cta{right:24px;bottom:24px}}
@media (max-width:1023px){
  body{padding-bottom:calc(76px + env(safe-area-inset-bottom))}
  .float-cta{right:16px;bottom:calc(88px + env(safe-area-inset-bottom))}
  .float-cta .btn{padding:12px 20px;font-size:14px;box-shadow:var(--sh-2)}
}
/* ===================== 空态 ===================== */
.empty-state{
  width:100%;text-align:center;padding:48px 24px;border:1px dashed var(--line);border-radius:var(--r-card);
  background:#fff;color:var(--ink-500);
}
.empty-state .ic{
  width:44px;height:44px;margin:0 auto 14px;border-radius:50%;background:var(--sand-100);color:var(--ink-300);
  display:flex;align-items:center;justify-content:center;font-size:19px;
}
.empty-state p{margin-bottom:16px;font-size:15px}
/* ===================== 入场动效 ===================== */
html.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
html.js .reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  html.js .reveal{opacity:1;transform:none;transition:none}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}
/* ===================== 断点微调 ===================== */
@media (max-width:1023px){
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .hero{min-height:74vh;padding:112px 0 56px}
  .hero-actions{margin-bottom:40px}
  .hero-stats{gap:28px}
  .section-head{margin-bottom:36px}
}
@media (max-width:575px){
  .hero{min-height:70vh;padding:104px 0 48px}
  .hero-title{font-size:32px}
  .btn{width:100%}
  .hero-actions{flex-direction:column;align-items:stretch}
  .float-cta .btn{width:auto}
  .metrics{grid-template-columns:1fr 1fr;gap:20px}
  .metric .num{font-size:38px}
  .card-media{aspect-ratio:16/9}
}

/* roulang page: category1 */
:root{
  --ink-900:#12100E;
  --ink-700:#2A2723;
  --ink-500:#57534C;
  --ink-300:#8C867D;
  --brand-900:#0E3A33;
  --brand-700:#14544A;
  --brand-100:#DDE7E3;
  --accent-600:#D0613A;
  --accent-500:#E4764C;
  --sand-50:#FBF8F3;
  --sand-100:#F4EFE6;
  --sand-200:#E8E0D2;
  --line:#E2DACB;
  --white:#FFFFFF;
  --danger:#B23A2E;
  --success:#2F7D5B;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:8px;
  --shadow-1:0 1px 2px rgba(20,16,12,.05);
  --shadow-2:0 14px 34px -14px rgba(20,16,12,.16);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:72px;
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-900);
  background:var(--sand-50);
  text-align:left;
  -webkit-font-smoothing:antialiased;
  padding-bottom:calc(76px + env(safe-area-inset-bottom));
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--ink-900);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease);}
a:hover{color:var(--brand-700);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-.01em;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;border-radius:4px;}

.grid-container{max-width:1240px;padding-left:20px;padding-right:20px;margin-left:auto;margin-right:auto;}
@media screen and (min-width:768px){.grid-container{padding-left:24px;padding-right:24px;}}
@media screen and (min-width:1024px){.grid-container{padding-left:32px;padding-right:32px;}}
.grid-gap{margin-bottom:0;}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:900;
  height:var(--nav-h);
  background:rgba(251,248,243,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:height .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{height:60px;border-bottom-color:var(--line);box-shadow:var(--shadow-1);}
.header-inner{
  max-width:1240px;margin:0 auto;height:100%;
  padding:0 20px;display:flex;align-items:center;gap:24px;
}
@media screen and (min-width:768px){.header-inner{padding:0 24px;}}
@media screen and (min-width:1024px){.header-inner{padding:0 32px;}}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(145deg,var(--brand-900),var(--brand-700));
  color:#fff;font-size:14px;font-weight:800;letter-spacing:-.02em;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:-.02em;color:var(--ink-900);}
.brand-text span{font-size:11px;color:var(--ink-300);letter-spacing:.02em;}
.main-nav{display:none;align-items:center;gap:6px;margin-left:auto;}
.main-nav a{
  position:relative;padding:8px 12px;border-radius:6px;
  font-size:15px;font-weight:500;color:var(--ink-500);white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--accent-600);transform:scaleX(0);transform-origin:left;
  transition:transform .25s var(--ease);
}
.main-nav a:hover{color:var(--ink-900);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--ink-900);font-weight:700;}
.main-nav a.is-active::after{transform:scaleX(1);}
.header-cta{display:none;margin-left:8px;}
.nav-toggle{
  margin-left:auto;width:42px;height:42px;border-radius:8px;
  border:1px solid var(--line);background:var(--white);color:var(--ink-900);
  display:flex;align-items:center;justify-content:center;font-size:17px;cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--ink-900);}
@media screen and (min-width:1024px){
  .main-nav{display:flex;}
  .header-cta{display:inline-flex;}
  .nav-toggle{display:none;}
}
.scroll-progress{
  position:fixed;top:var(--nav-h);left:0;height:2px;width:0;
  background:var(--accent-600);z-index:901;transition:top .25s var(--ease);
}
.site-header.is-scrolled ~ .scroll-progress{top:60px;}

/* 移动抽屉 */
.drawer{
  position:fixed;top:var(--nav-h);left:0;right:0;z-index:890;
  background:var(--white);border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-2);padding:16px 20px 24px;
  display:none;
}
.drawer.is-open{display:block;animation:drawerIn .24s var(--ease);}
@keyframes drawerIn{from{opacity:0;transform:translateY(-8px);}to{opacity:1;transform:translateY(0);}}
.drawer a{
  display:block;padding:14px 4px;font-size:16px;font-weight:500;
  border-bottom:1px solid var(--line);color:var(--ink-700);
}
.drawer a:last-of-type{border-bottom:0;}
.drawer a.is-active{color:var(--accent-600);font-weight:700;}
.drawer .btn{margin-top:16px;width:100%;justify-content:center;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary{background:var(--brand-900);color:#fff;}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-accent{background:var(--accent-600);color:#fff;}
.btn-accent:hover{background:var(--accent-500);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--ink-900);border-color:var(--ink-900);}
.btn-ghost:hover{background:var(--ink-900);color:#fff;}
.btn-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.4);}
.btn-light:hover{background:#fff;color:var(--brand-900);border-color:#fff;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;padding:4px 0;
  font-size:15px;font-weight:600;color:var(--brand-900);
  border-bottom:1px solid transparent;border-radius:0;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.btn-text:hover{color:var(--accent-600);border-bottom-color:var(--accent-600);}
.btn i{font-size:13px;}

/* ============ 通用区块 ============ */
.section{padding:72px 0;}
@media screen and (min-width:1024px){.section{padding:96px 0;}}
.section-alt{background:var(--sand-100);}
.section-dark{background:var(--brand-900);color:#F1EDE4;}
.section-dark h2,.section-dark h3{color:#fff;}
.section-dark p{color:rgba(241,237,228,.78);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--accent-600);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent-600);display:block;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{font-size:clamp(24px,3.2vw,40px);font-weight:700;line-height:1.2;}
.section-head p{margin-top:14px;font-size:16px;color:var(--ink-500);}
.section-dark .section-head p{color:rgba(241,237,228,.72);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-900);
  font-size:13px;font-weight:600;letter-spacing:.01em;
}
.badge-accent{background:rgba(208,97,58,.12);color:var(--accent-600);}

/* ============ 页头 Banner ============ */
.page-hero{
  position:relative;margin-top:var(--nav-h);
  padding:72px 0 64px;
  background-image:linear-gradient(rgba(14,58,51,.88),rgba(14,58,51,.94)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  color:#fff;overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:18px 18px;opacity:.5;pointer-events:none;
}
.page-hero .grid-container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(241,237,228,.6);margin-bottom:22px;
}
.breadcrumb a{color:rgba(241,237,228,.72);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb span{color:rgba(241,237,228,.34);}
.page-hero h1{
  font-size:clamp(32px,5.6vw,62px);font-weight:800;line-height:1.12;
  letter-spacing:-.02em;color:#fff;max-width:16em;
}
.hero-sub{
  margin-top:18px;font-size:17px;line-height:1.75;
  color:rgba(241,237,228,.8);max-width:34em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-metrics{
  display:flex;flex-wrap:wrap;gap:32px;margin-top:44px;
  padding-top:28px;border-top:1px solid rgba(255,255,255,.16);
}
.metric{min-width:120px;}
.metric b{
  display:block;font-size:clamp(28px,4vw,40px);font-weight:800;line-height:1.1;
  color:#fff;font-variant-numeric:tabular-nums;
}
.metric span{display:block;margin-top:6px;font-size:13px;color:rgba(241,237,228,.62);}

/* ============ 交错图文 ============ */
.zigzag{display:flex;flex-direction:column;gap:56px;}
@media screen and (min-width:1024px){.zigzag{gap:88px;}}
.zig-row{display:grid;grid-template-columns:1fr;gap:28px;align-items:center;}
@media screen and (min-width:1024px){
  .zig-row{grid-template-columns:1fr 1fr;gap:64px;}
  .zig-row.is-reverse .zig-media{order:2;}
  .zig-row.is-reverse .zig-text{order:1;}
}
.zig-media{
  border-radius:var(--radius-img);overflow:hidden;
  background:var(--sand-200);box-shadow:var(--shadow-1);
  border:1px solid var(--line);
}
.zig-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s var(--ease);}
.zig-media:hover img{transform:scale(1.03);}
.zig-index{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:34px;height:34px;padding:0 10px;border-radius:8px;
  background:var(--sand-100);border:1px solid var(--line);
  font-size:13px;font-weight:700;color:var(--brand-900);
  font-variant-numeric:tabular-nums;margin-bottom:16px;
}
.zig-text h3{font-size:20px;font-weight:600;line-height:1.35;}
.zig-text > p{margin-top:14px;font-size:16px;color:var(--ink-500);}
.point-list{margin-top:20px;display:flex;flex-direction:column;gap:10px;}
.point-list li{
  position:relative;padding-left:22px;font-size:15px;color:var(--ink-700);
}
.point-list li::before{
  content:"";position:absolute;left:2px;top:.72em;
  width:6px;height:6px;border-radius:50%;background:var(--accent-600);
}

/* ============ 参数卡带 ============ */
.rail{
  display:grid;grid-auto-flow:column;grid-auto-columns:78%;
  gap:16px;overflow-x:auto;padding:4px 4px 18px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-track{background:var(--sand-200);border-radius:99px;}
.rail::-webkit-scrollbar-thumb{background:var(--brand-100);border-radius:99px;}
@media screen and (min-width:768px){.rail{grid-auto-columns:44%;}}
@media screen and (min-width:1024px){
  .rail{grid-auto-flow:row;grid-template-columns:repeat(4,1fr);grid-auto-columns:auto;overflow:visible;padding:0;}
}
.spec-card{
  scroll-snap-align:start;
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.spec-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand-100);}
.spec-card i{font-size:20px;color:var(--accent-600);}
.spec-card b{
  display:block;margin-top:16px;font-size:clamp(26px,3.6vw,34px);font-weight:800;
  line-height:1.1;color:var(--brand-900);font-variant-numeric:tabular-nums;
}
.spec-card h3{margin-top:10px;font-size:17px;font-weight:600;}
.spec-card p{margin-top:8px;font-size:14px;color:var(--ink-500);line-height:1.75;}

/* ============ 流程 ============ */
.flow{display:grid;grid-template-columns:1fr;gap:20px;}
@media screen and (min-width:768px){.flow{grid-template-columns:repeat(2,1fr);gap:24px;}}
@media screen and (min-width:1024px){.flow{grid-template-columns:repeat(4,1fr);}}
.flow-item{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;position:relative;
  transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.flow-item:hover{border-color:var(--brand-100);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.flow-item .num{
  font-size:15px;font-weight:800;color:var(--accent-600);
  font-variant-numeric:tabular-nums;letter-spacing:.06em;
}
.flow-item h3{margin-top:14px;font-size:18px;font-weight:600;}
.flow-item p{margin-top:10px;font-size:14.5px;color:var(--ink-500);line-height:1.8;}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:1fr;gap:32px;}
@media screen and (min-width:1024px){.faq-layout{grid-template-columns:4fr 8fr;gap:64px;align-items:start;}}
.faq-aside h2{font-size:clamp(24px,3.2vw,36px);font-weight:700;line-height:1.22;}
.faq-aside p{margin-top:14px;font-size:16px;color:var(--ink-500);}
.accordion{margin:0;background:transparent;}
.accordion-item{background:var(--white);border:1px solid var(--line) !important;border-radius:var(--radius-card);margin-bottom:12px;overflow:hidden;}
.accordion-title{
  font-size:17px;font-weight:600;color:var(--ink-900) !important;
  padding:20px 56px 20px 24px !important;border:0 !important;background:transparent !important;
  position:relative;transition:color .2s var(--ease);
}
.accordion-title:hover{color:var(--brand-700) !important;}
.accordion-title::before{
  content:"+";position:absolute;right:24px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--accent-600);line-height:1;transition:transform .3s var(--ease);
}
.accordion-item.is-active .accordion-title::before{transform:translateY(-50%) rotate(180deg);}
.accordion-content{padding:0 24px 22px !important;border:0 !important;background:transparent !important;}
.accordion-content p{font-size:15px;color:var(--ink-500);line-height:1.85;animation:faqIn .3s var(--ease);}
@keyframes faqIn{from{opacity:0;transform:translateY(-8px);}to{opacity:1;transform:translateY(0);}}

/* ============ CTA 横条 ============ */
.cta-band{
  background:var(--brand-900);border-radius:var(--radius-card);
  padding:40px 32px;display:grid;grid-template-columns:1fr;gap:24px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:rgba(208,97,58,.16);
}
@media screen and (min-width:768px){.cta-band{grid-template-columns:1fr auto;padding:44px 48px;}}
.cta-band h3{font-size:clamp(20px,2.6vw,28px);font-weight:700;color:#fff;line-height:1.3;}
.cta-band p{margin-top:10px;font-size:15px;color:rgba(241,237,228,.75);max-width:42em;}
.cta-band .btn{position:relative;z-index:2;}

/* ============ 联系 ============ */
.contact-grid{display:grid;grid-template-columns:1fr;gap:40px;}
@media screen and (min-width:1024px){.contact-grid{grid-template-columns:1fr 1fr;gap:72px;align-items:start;}}
.contact-list{margin-top:28px;display:flex;flex-direction:column;gap:18px;}
.contact-list li{display:flex;gap:14px;align-items:flex-start;font-size:15.5px;color:var(--ink-700);}
.contact-list i{
  width:36px;height:36px;flex:0 0 auto;border-radius:9px;
  background:var(--sand-100);border:1px solid var(--line);color:var(--brand-900);
  display:flex;align-items:center;justify-content:center;font-size:14px;
}
.contact-list b{display:block;font-size:13px;font-weight:600;color:var(--ink-300);letter-spacing:.02em;}
.form-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);padding:28px 24px;box-shadow:var(--shadow-1);}
@media screen and (min-width:768px){.form-card{padding:34px 32px;}}
.field{position:relative;margin-bottom:26px;}
.field label{
  position:absolute;left:0;top:12px;font-size:15px;color:var(--ink-300);
  pointer-events:none;transition:all .2s var(--ease);
}
.field input,.field textarea{
  width:100%;border:0;border-bottom:1px solid var(--line);border-radius:0;
  background:transparent;padding:12px 0 10px;font-size:15.5px;color:var(--ink-900);
  font-family:inherit;transition:border-color .2s var(--ease);
  box-shadow:none;margin:0;height:auto;
}
.field textarea{resize:vertical;min-height:74px;}
.field input:focus,.field textarea:focus{outline:0;border-bottom-color:var(--accent-600);box-shadow:none;}
.field input:focus + label,.field textarea:focus + label,
.field input:not(:placeholder-shown) + label,.field textarea:not(:placeholder-shown) + label{
  top:-10px;font-size:12px;color:var(--accent-600);letter-spacing:.02em;
}
.form-card .btn{width:100%;justify-content:center;}
.form-note{margin-top:14px;font-size:13px;color:var(--ink-300);text-align:center;}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:#EDE8DE;padding:64px 0 0;margin-top:0;}
.footer-brand strong{display:block;font-size:19px;font-weight:800;color:#fff;letter-spacing:-.01em;}
.footer-brand p{margin-top:12px;font-size:14px;line-height:1.8;color:rgba(237,232,222,.66);max-width:24em;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li,.footer-col a{font-size:14px;color:rgba(237,232,222,.72);}
.footer-col a:hover{color:var(--accent-500);}
.site-footer .grid-x > .cell{margin-bottom:32px;}
.footer-bottom{
  margin-top:20px;padding:22px 0 28px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(237,232,222,.52);
}

/* ============ 浮动 CTA & 底部 Tab ============ */
.float-cta{
  position:fixed;right:20px;bottom:calc(88px + env(safe-area-inset-bottom));
  z-index:880;opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
  padding:12px 18px;font-size:14px;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
@media screen and (min-width:1024px){
  .float-cta{right:24px;bottom:24px;font-size:15px;padding:13px 22px;}
}
.tab-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:900;
  background:rgba(255,255,255,.96);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);
  display:grid;grid-template-columns:repeat(4,1fr);
  padding-bottom:env(safe-area-inset-bottom);
}
@media screen and (min-width:1024px){.tab-bar{display:none;}}
.tab-bar a{
  position:relative;display:flex;flex-direction:column;align-items:center;gap:4px;
  padding:10px 4px 12px;font-size:11px;color:var(--ink-300);font-weight:500;
}
.tab-bar a svg{width:21px;height:21px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.tab-bar a.is-active{color:var(--accent-600);}
.tab-bar a.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;background:var(--accent-600);border-radius:0 0 3px 3px;
}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease);}
.reveal.is-in{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --ink-900:#12100E;--ink-700:#2A2723;--ink-500:#57534C;--ink-300:#8C867D;
  --brand-900:#0E3A33;--brand-700:#14544A;--brand-100:#DDE7E3;
  --accent-600:#D0613A;--accent-500:#E4764C;
  --sand-50:#FBF8F3;--sand-100:#F4EFE6;--sand-200:#E8E0D2;
  --line:#E2DACB;--white:#FFFFFF;
  --danger:#B23A2E;--ok:#2F7D5B;
  --r-card:16px;--r-img:14px;--r-btn:8px;
  --sh-1:0 1px 2px rgba(20,16,12,.05);
  --sh-2:0 14px 34px -14px rgba(20,16,12,.16);
  --ease:cubic-bezier(.22,.61,.36,1);
  --wrap:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--sand-50);color:var(--ink-900);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.85;text-align:left;
  padding-bottom:calc(76px + env(safe-area-inset-bottom));
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--accent-600)}
button,input,textarea,select{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;line-height:1.2;font-weight:700}
p{margin:0 0 1.2em}
ul,ol{margin:0 0 1.2em;padding-left:1.2em}
:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;border-radius:4px}
.grid-container{max-width:var(--wrap);margin:0 auto;padding:0 20px}
@media(min-width:768px){.grid-container{padding:0 24px}}
@media(min-width:1024px){.grid-container{padding:0 32px}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:900;
  background:rgba(251,248,243,.92);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease),background .25s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(255,255,255,.94)}
.header-inner{display:flex;align-items:center;gap:32px;height:72px;transition:height .25s var(--ease)}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:flex;flex-direction:column;gap:2px;text-decoration:none;color:var(--ink-900);flex:none}
.brand strong{font-size:19px;font-weight:800;letter-spacing:-.01em;line-height:1.15}
.brand small{font-size:11px;color:var(--ink-300);letter-spacing:.04em;line-height:1.2}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:auto}
.main-nav a{
  position:relative;font-size:15px;color:var(--ink-700);padding:6px 0;white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent-600);
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.main-nav a:hover{color:var(--brand-900)}
.main-nav a:hover::after,.main-nav a.is-active::after{transform:scaleX(1)}
.main-nav a.is-active{color:var(--brand-900);font-weight:600}
.header-cta{
  flex:none;display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 18px;border-radius:var(--r-btn);
  background:var(--brand-900);color:#fff;font-size:14px;font-weight:600;
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.header-cta:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px)}
.nav-toggle{
  display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);
  border-radius:10px;background:#fff;cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-drawer{
  display:none;border-bottom:1px solid var(--line);background:#fff;
}
.nav-drawer.is-open{display:block}
.nav-drawer ul{list-style:none;margin:0;padding:8px 0}
.nav-drawer li{border-bottom:1px solid var(--line)}
.nav-drawer li:last-child{border-bottom:0}
.nav-drawer a{display:block;padding:14px 20px;color:var(--ink-700);font-size:15px}
.nav-drawer a.is-active{color:var(--accent-600);font-weight:600}
@media(max-width:1023px){
  .main-nav,.header-cta{display:none}
  .nav-toggle{display:inline-flex}
}

/* ---------- Breadcrumb & article head ---------- */
.banner{
  position:relative;background:var(--brand-900) url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  color:#fff;padding:64px 0 56px;
}
.banner::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,58,51,.86),rgba(14,58,51,.78))}
.banner .grid-container{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:20px}
.crumb a{color:rgba(255,255,255,.82)}
.crumb a:hover{color:#fff}
.crumb span{color:rgba(255,255,255,.45)}
.crumb .current{color:rgba(255,255,255,.92);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-900);font-size:12.5px;font-weight:600;
}
.badge.on-dark{background:rgba(255,255,255,.16);color:#fff}
.article-title{
  font-size:clamp(26px,4.4vw,46px);font-weight:800;line-height:1.18;letter-spacing:-.02em;
  margin:16px 0 0;max-width:22ch;color:#fff;
}
.post-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px;
  font-size:13px;color:rgba(255,255,255,.78);
}
.post-meta .dot{color:rgba(255,255,255,.4)}
.post-meta time{font-variant-numeric:tabular-nums}

/* ---------- Layout ---------- */
.page-body{padding:56px 0 24px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 288px;gap:56px;align-items:start}
@media(max-width:1023px){
  .article-layout{grid-template-columns:1fr;gap:40px}
}
.cover-figure{margin:0 0 36px}
.cover-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);background:var(--sand-200)}
.cover-figure figcaption{font-size:13px;color:var(--ink-300);text-align:center;margin-top:12px}

/* ---------- Article typography ---------- */
.article-body{max-width:720px;font-size:16.5px;line-height:1.85;color:var(--ink-700)}
.article-body>*{max-width:100%}
.article-body h2{
  font-size:clamp(21px,2.6vw,28px);font-weight:700;color:var(--ink-900);
  margin:48px 0 12px;letter-spacing:-.01em;
}
.article-body h3{font-size:19px;font-weight:600;color:var(--ink-900);margin:36px 0 10px}
.article-body h4{font-size:16.5px;font-weight:600;color:var(--ink-900);margin:28px 0 8px}
.article-body p{margin:0 0 1.2em}
.article-body a{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--accent-600)}
.article-body ul,.article-body ol{padding-left:1.25em;margin:0 0 1.4em}
.article-body ul{list-style:none;padding-left:1.1em}
.article-body ul li{position:relative}
.article-body ul li::before{
  content:"";position:absolute;left:-1.05em;top:.72em;width:6px;height:6px;border-radius:50%;
  background:var(--accent-600);
}
.article-body li{margin-bottom:.5em}
.article-body img{border-radius:var(--r-img);margin:26px auto}
.article-body blockquote{
  margin:26px 0;padding:16px 22px;background:var(--sand-100);
  border-left:3px solid var(--accent-600);border-radius:0 var(--r-img) var(--r-img) 0;
  color:var(--ink-700);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden;
}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{background:var(--sand-100);font-weight:600;color:var(--ink-900)}
.article-body tbody tr:nth-child(even){background:var(--sand-50)}
.article-body code{background:var(--sand-100);padding:2px 6px;border-radius:6px;font-size:.92em}
.article-body hr{border:0;border-top:1px solid var(--line);margin:40px 0}
.article-body::selection,.article-body *::selection{background:var(--brand-100)}

/* ---------- Aside ---------- */
.aside-stack{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
@media(max-width:1023px){.aside-stack{position:static}}
.aside-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-1);
}
.aside-card h3{font-size:15px;font-weight:700;color:var(--ink-900);margin-bottom:12px}
.aside-card ul{list-style:none;margin:0;padding:0}
.aside-card li{margin-bottom:10px}
.aside-card li:last-child{margin-bottom:0}
.aside-card ul a{font-size:14.5px;color:var(--ink-500);display:flex;gap:8px;align-items:baseline}
.aside-card ul a::before{content:"—";color:var(--sand-200)}
.aside-card ul a:hover{color:var(--accent-600)}
.aside-card ul a:hover::before{color:var(--accent-600)}
.aside-card p{font-size:14px;color:var(--ink-500);margin:0 0 14px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;background:none;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary{background:var(--brand-900);color:#fff}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px)}
.btn-secondary{background:transparent;color:var(--ink-900);border-color:var(--ink-900)}
.btn-secondary:hover{background:var(--ink-900);color:#fff;transform:translateY(-1px)}
.btn-ghost{height:auto;padding:0;color:var(--brand-900);position:relative;border:0}
.btn-ghost::after{
  content:"";position:absolute;left:0;bottom:-3px;height:2px;width:100%;background:var(--accent-600);
  transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.btn-ghost:hover{color:var(--accent-600)}
.btn-ghost:hover::after{transform:scaleX(1)}

/* ---------- Post tail ---------- */
.tail-divider{height:1px;background:var(--line);margin:48px 0 24px}
.tail-cta{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  background:var(--sand-100);border-radius:var(--r-card);padding:20px 24px;
}
.tail-cta p{margin:0;font-size:15px;color:var(--ink-700)}
.postnav{display:flex;flex-wrap:wrap;gap:24px;margin-top:24px;font-size:14px;color:var(--ink-300)}
.postnav a{color:var(--brand-700)}
.postnav a:hover{color:var(--accent-600)}

/* ---------- Empty state ---------- */
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-card);background:#fff;
  padding:56px 24px;text-align:center;color:var(--ink-500);
}
.empty-state strong{display:block;font-size:18px;color:var(--ink-900);margin-bottom:8px}
.empty-state p{margin:0 0 18px;font-size:14.5px}

/* ---------- Section ---------- */
.section{padding:72px 0}
@media(max-width:767px){.section{padding:48px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px}
.section-head h2{font-size:clamp(22px,3vw,32px);letter-spacing:-.01em}
.section-head p{margin:10px 0 0;color:var(--ink-500);font-size:15px}
.section--sand{background:var(--sand-100);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- Cards ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;height:100%;box-shadow:var(--sh-1);
  transition:box-shadow .24s var(--ease),transform .24s var(--ease);
}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.card-media{overflow:hidden;background:var(--sand-200)}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .26s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px;font-weight:600;line-height:1.35;color:var(--ink-900)}
.card-body p{font-size:14.5px;color:var(--ink-500);margin:0;line-height:1.7}
.card-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-300);font-variant-numeric:tabular-nums;
}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--sand-100);color:var(--ink-500);font-size:12.5px;font-weight:600;
}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-list .accordion-item{border-bottom:1px solid var(--line);background:transparent}
.faq-list .accordion-title{
  padding:22px 44px 22px 0;font-size:16.5px;font-weight:600;color:var(--ink-900);
  border:0;background:transparent;position:relative;
}
.faq-list .accordion-title:hover{color:var(--accent-600)}
.faq-list .accordion-title::before{
  content:"";position:absolute;right:14px;top:50%;width:12px;height:2px;background:var(--accent-600);
  transform:translateY(-50%);transition:transform .3s var(--ease);
}
.faq-list .accordion-title::after{
  content:"";position:absolute;right:19px;top:50%;width:2px;height:12px;background:var(--accent-600);
  transform:translateY(-50%);transition:transform .3s var(--ease);
}
.faq-list .accordion-item.is-active .accordion-title::after{transform:translateY(-50%) rotate(90deg)}
.faq-list .accordion-content{padding:0 44px 22px 0;font-size:15px;color:var(--ink-500);line-height:1.8}
.faq-list .accordion-content p:last-child{margin-bottom:0}

/* ---------- Closing band ---------- */
.closing{
  background:var(--brand-900);color:#fff;border-radius:var(--r-card);
  padding:40px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  position:relative;overflow:hidden;
}
.closing::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:14px 14px;opacity:.35;
}
.closing>*{position:relative;z-index:1}
.closing h2{font-size:clamp(20px,2.6vw,28px);margin-bottom:10px}
.closing p{margin:0;color:rgba(255,255,255,.78);font-size:15px;max-width:56ch}
.closing .btn-primary{background:var(--accent-600)}
.closing .btn-primary:hover{background:var(--accent-500)}

/* ---------- Float CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:880;
  display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 20px;
  border-radius:var(--r-btn);background:var(--accent-600);color:#fff;font-size:14.5px;font-weight:600;
  box-shadow:var(--sh-2);opacity:0;transform:translateY(8px);pointer-events:none;
  transition:opacity .24s var(--ease),transform .24s var(--ease),background .22s var(--ease);
}
.float-cta.is-show{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta:hover{background:var(--accent-500);color:#fff}
@media(max-width:1023px){
  .float-cta{right:16px;bottom:calc(88px + env(safe-area-inset-bottom));height:44px;padding:0 16px;font-size:13.5px}
}

/* ---------- Mobile tab bar ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:900;display:none;
  background:rgba(255,255,255,.96);border-top:1px solid var(--line);
  padding:6px 4px calc(6px + env(safe-area-inset-bottom));
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.tabbar ul{list-style:none;margin:0;padding:0;display:flex}
.tabbar li{flex:1}
.tabbar a{
  display:flex;flex-direction:column;align-items:center;gap:4px;padding:6px 2px;
  font-size:11.5px;color:var(--ink-300);position:relative;
}
.tabbar a svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.tabbar a.is-active{color:var(--accent-600)}
.tabbar a.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;background:var(--accent-600);border-radius:2px;
}
@media(max-width:1023px){.tabbar{display:block}}

/* ---------- Footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(244,239,230,.82);margin-top:72px;padding:56px 0 0}
.site-footer .grid-gap{row-gap:32px}
.footer-brand strong{display:block;color:#fff;font-size:19px;font-weight:800;margin-bottom:10px}
.footer-brand p{font-size:14px;color:rgba(244,239,230,.72);margin:0;max-width:30ch;line-height:1.75}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{font-size:14px;color:rgba(244,239,230,.72);margin-bottom:10px;line-height:1.6}
.footer-col a{color:rgba(244,239,230,.82)}
.footer-col a:hover{color:var(--accent-500)}
.footer-bottom{
  margin-top:40px;padding:20px 0 28px;border-top:1px solid rgba(244,239,230,.16);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(244,239,230,.6);
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{transition-duration:.001ms !important;animation-duration:.001ms !important}
}

/* roulang page: category2 */
:root{
  --ink-900:#12100E;
  --ink-700:#2A2723;
  --ink-500:#57534C;
  --ink-300:#8C867D;
  --brand-900:#0E3A33;
  --brand-700:#14544A;
  --brand-100:#DDE7E3;
  --accent-600:#D0613A;
  --accent-500:#E4764C;
  --sand-50:#FBF8F3;
  --sand-100:#F4EFE6;
  --sand-200:#E8E0D2;
  --line:#E2DACB;
  --white:#FFFFFF;
  --err:#B23A2E;
  --ok:#2F7D5B;
  --r-card:16px;
  --r-img:14px;
  --r-btn:8px;
  --sh-1:0 1px 2px rgba(20,16,12,.05);
  --sh-2:0 14px 34px -14px rgba(20,16,12,.16);
  --ease:cubic-bezier(.22,.61,.36,1);
  --s4:4px;--s8:8px;--s12:12px;--s16:16px;--s24:24px;--s32:32px;--s48:48px;--s64:64px;--s96:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-top:72px;
  padding-bottom:calc(76px + env(safe-area-inset-bottom));
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--sand-50);
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
body.drawer-open{overflow:hidden}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--accent-600)}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-0.01em}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand-100);color:var(--brand-900)}

.grid-container{max-width:1240px;padding-left:20px;padding-right:20px;margin:0 auto}
@media screen and (min-width:768px){.grid-container{padding-left:24px;padding-right:24px}}
@media screen and (min-width:1024px){.grid-container{padding-left:32px;padding-right:32px}}

/* 顶部导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:900;
  height:72px;
  background:rgba(251,248,243,.92);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:height .26s var(--ease),border-color .26s var(--ease),background .26s var(--ease);
}
.site-header.is-scrolled{height:60px;border-bottom-color:var(--line);background:rgba(255,255,255,.92)}
.nav-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:var(--s24)}
.brand{display:flex;flex-direction:column;line-height:1.2;gap:2px}
.brand-mark{font-size:19px;font-weight:800;letter-spacing:-0.02em;color:var(--ink-900)}
.brand-mark em{font-style:normal;font-weight:800}
.brand-sub{font-size:11px;color:var(--ink-300);letter-spacing:.06em}
.main-nav{display:flex;align-items:center;gap:var(--s32)}
.main-nav a{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-500);padding:6px 0;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent-600);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.main-nav a:hover{color:var(--ink-900)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.is-active{color:var(--ink-900);font-weight:600}
.main-nav a.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:var(--s12)}
.scroll-progress{position:absolute;left:0;bottom:-1px;height:2px;width:0;background:var(--accent-600);transition:width .1s linear}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:all .24s var(--ease);white-space:nowrap;
}
.btn-primary{background:var(--brand-900);color:#fff;border-color:var(--brand-900)}
.btn-primary:hover{background:var(--accent-600);border-color:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-ghost{background:transparent;color:var(--ink-900);border-color:var(--ink-900)}
.btn-ghost:hover{background:var(--ink-900);color:#fff}
.btn-light{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.35)}
.btn-light:hover{background:#fff;color:var(--brand-900);border-color:#fff}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-lg{padding:15px 32px;font-size:16px}
.btn-link{background:none;border:0;padding:2px 0;color:var(--brand-700);font-weight:600;font-size:15px;position:relative}
.btn-link::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--accent-600);transition:width .2s var(--ease)}
.btn-link:hover{color:var(--accent-600)}
.btn-link:hover::after{width:100%}

/* 汉堡与抽屉 */
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink-900);transition:transform .24s var(--ease),opacity .24s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
.nav-drawer{
  position:fixed;left:0;right:0;top:72px;z-index:890;
  background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--sh-2);
  padding:var(--s16) 20px var(--s24);
  transform:translateY(-12px);opacity:0;pointer-events:none;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.nav-drawer.is-open{transform:none;opacity:1;pointer-events:auto}
.nav-drawer a{display:block;padding:14px 4px;font-size:16px;font-weight:500;color:var(--ink-700);border-bottom:1px solid var(--sand-200)}
.nav-drawer a.is-active{color:var(--accent-600);font-weight:700}
.nav-drawer .drawer-cta{margin-top:var(--s16);display:flex}

/* 底部 Tab */
.tab-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:900;
  background:rgba(255,255,255,.96);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.tab-bar a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  padding:9px 2px 8px;font-size:11px;color:var(--ink-300);position:relative;
}
.tab-bar a svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.tab-bar a.is-active{color:var(--accent-600);font-weight:600}
.tab-bar a.is-active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:22px;height:2px;background:var(--accent-600);border-radius:0 0 2px 2px}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:880;
  background:var(--accent-600);color:#fff;border-radius:var(--r-btn);
  padding:13px 22px;font-size:15px;font-weight:600;
  box-shadow:0 14px 34px -14px rgba(208,97,58,.55);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s,background .24s var(--ease);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:none}
.float-cta:hover{background:var(--accent-500);color:#fff}

/* 面包屑 */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-300);margin-bottom:var(--s16)}
.crumb a{color:var(--ink-300)}
.crumb a:hover{color:var(--accent-600)}
.crumb .sep{color:var(--sand-200)}
.crumb .now{color:var(--ink-500)}

/* 页面头 Hero */
.page-hero{
  position:relative;overflow:hidden;
  background-color:var(--brand-900);
  background-image:linear-gradient(180deg,rgba(14,58,51,.90) 0%,rgba(14,58,51,.94) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  padding:64px 0 72px;
  color:var(--sand-100);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:28px 28px;
}
.page-hero .grid-container{position:relative;z-index:2}
.page-hero .crumb,.page-hero .crumb a,.page-hero .crumb .now{color:rgba(244,239,230,.72)}
.page-hero .crumb a:hover{color:#fff}
.page-hero .crumb .sep{color:rgba(244,239,230,.3)}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:#F0C7B4;margin-bottom:var(--s16);
}
.hero-eyebrow::before{content:"";width:26px;height:2px;background:var(--accent-600)}
.page-hero h1{
  font-size:clamp(32px,5.2vw,56px);font-weight:800;line-height:1.12;letter-spacing:-0.02em;
  color:#fff;margin-bottom:var(--s16);max-width:16em;
}
.page-hero .hero-lede{font-size:clamp(16px,1.6vw,18px);line-height:1.8;color:rgba(244,239,230,.86);max-width:34em;margin-bottom:var(--s32)}
.hero-btns{display:flex;flex-wrap:wrap;gap:var(--s12)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:var(--s32)}
.hero-tags span{
  font-size:13px;color:rgba(244,239,230,.9);
  border:1px solid rgba(244,239,230,.28);border-radius:999px;padding:5px 14px;
}

/* 通用板块 */
.section{padding:var(--s64) 0}
@media screen and (min-width:1024px){.section{padding:var(--s96) 0}}
.section-sand{background:var(--sand-100)}
.section-white{background:#fff}
.section-dark{background:var(--brand-900);color:rgba(244,239,230,.86)}
.section-head{margin-bottom:var(--s48);max-width:760px}
.section-head .kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--accent-600);letter-spacing:.06em;margin-bottom:var(--s12);
}
.section-head .kicker::before{content:"";width:22px;height:2px;background:var(--accent-600)}
.section-head h2{font-size:clamp(24px,3.2vw,38px);font-weight:700;line-height:1.2;margin-bottom:12px}
.section-head p{font-size:16px;color:var(--ink-500);max-width:42em}
.section-dark .section-head h2{color:#fff}
.section-dark .section-head p{color:rgba(244,239,230,.72)}

/* 指标带 */
.stat-band{background:var(--brand-900);color:#fff;padding:var(--s48) 0;position:relative;overflow:hidden}
.stat-band::after{
  content:"";position:absolute;inset:0;opacity:.04;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);background-size:18px 18px;
}
.stat-grid{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);gap:var(--s32)}
.stat-item{border-left:2px solid rgba(244,239,230,.16);padding-left:var(--s16)}
.stat-item:first-child{border-left-color:var(--accent-600)}
.stat-num{
  font-size:clamp(32px,4.4vw,52px);font-weight:800;line-height:1.05;
  font-variant-numeric:tabular-nums;letter-spacing:-0.02em;color:#fff;
}
.stat-num small{font-size:16px;font-weight:600;margin-left:2px}
.stat-label{font-size:13px;color:rgba(244,239,230,.68);margin-top:6px}

/* 筛选胶囊 */
.chip-row{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;margin-bottom:var(--s32);scrollbar-width:none}
.chip-row::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;font-size:14px;font-weight:500;color:var(--ink-500);
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:9px 20px;
  cursor:pointer;transition:all .22s var(--ease);
}
.chip:hover{border-color:var(--brand-700);color:var(--brand-900)}
.chip.is-active{background:var(--brand-900);border-color:var(--brand-900);color:#fff;font-weight:600}

/* 场景卡片 */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--s24)}
.scene-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;
  transition:box-shadow .24s var(--ease),transform .24s var(--ease);
}
.scene-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.card-media{aspect-ratio:16/10;overflow:hidden;background:var(--sand-200)}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .26s var(--ease)}
.scene-card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:var(--s24) var(--s24) var(--s16);flex:1}
.badge{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.02em;
  color:var(--brand-900);background:var(--brand-100);border-radius:999px;
  padding:4px 12px;margin-bottom:var(--s12);
}
.card-body h3{font-size:19px;font-weight:600;line-height:1.35;margin-bottom:10px}
.card-body p{font-size:15px;color:var(--ink-500);line-height:1.8;margin:0}
.card-meta{
  display:flex;justify-content:space-between;gap:var(--s12);flex-wrap:wrap;
  padding:var(--s16) var(--s24) var(--s24);border-top:1px solid var(--sand-200);
  font-size:13px;color:var(--ink-300);font-variant-numeric:tabular-nums;
}

/* 步骤 */
.step-list{position:relative;margin-top:var(--s8)}
.step-list::before{content:"";position:absolute;left:26px;top:12px;bottom:12px;width:2px;background:var(--sand-200)}
.step-item{position:relative;display:flex;gap:var(--s24);padding:0 0 var(--s32) 0}
.step-item:last-child{padding-bottom:0}
.step-num{
  position:relative;z-index:2;flex:0 0 auto;width:54px;height:54px;border-radius:14px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh-1);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:800;color:var(--brand-900);font-variant-numeric:tabular-nums;
}
.step-item.is-key .step-num{background:var(--brand-900);color:#fff;border-color:var(--brand-900)}
.step-content{padding-top:6px}
.step-content h3{font-size:19px;font-weight:600;margin-bottom:8px}
.step-content p{font-size:15px;color:var(--ink-500);max-width:44em}

/* 注意事项卡 */
.note-card{
  background:var(--sand-100);border-left:3px solid var(--accent-600);
  border-radius:0 var(--r-card) var(--r-card) 0;padding:var(--s24) var(--s24) var(--s24) var(--s32);
  margin-top:var(--s48);
}
.note-card h3{font-size:17px;font-weight:600;margin-bottom:10px}
.note-card p{font-size:15px;color:var(--ink-500);margin:0;max-width:56em}

/* 双栏信息表 */
.info-table{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:#fff}
.info-row{display:contents}
.info-q,.info-a{padding:var(--s24);border-bottom:1px solid var(--line)}
.info-q{font-weight:600;color:var(--ink-900);background:var(--sand-50);border-right:1px solid var(--line);font-size:15px}
.info-a{font-size:15px;color:var(--ink-500)}
.info-q:last-of-type,.info-a:last-of-type{border-bottom:0}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:var(--s48);align-items:start}
.faq-side h2{font-size:clamp(24px,3.2vw,36px);font-weight:700;line-height:1.2;margin-bottom:12px}
.faq-side p{font-size:15px;color:var(--ink-500)}
.accordion{background:transparent;border:0;margin:0}
.accordion-item{background:#fff;border:1px solid var(--line)!important;border-radius:14px;margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1)}
.accordion-title{
  border:0!important;padding:20px 56px 20px 24px!important;font-size:17px;font-weight:600;
  color:var(--ink-900)!important;line-height:1.5;transition:background .22s var(--ease),color .22s var(--ease);
}
.accordion-title:hover{background:var(--sand-100)!important;color:var(--brand-900)!important}
.accordion-title::before{
  color:var(--accent-600)!important;font-size:22px!important;right:22px!important;
  transition:transform .3s var(--ease);
}
.accordion-item.is-active .accordion-title::before{transform:translateY(-50%) rotate(180deg)}
.accordion-content{
  border:0!important;border-top:1px solid var(--sand-200)!important;background:#fff!important;
  padding:18px 24px 22px!important;color:var(--ink-500);font-size:15px;line-height:1.85;
}
.accordion-content p{margin:0}

/* CTA 横条 */
.cta-band{
  background:var(--brand-900);border-radius:var(--r-card);padding:var(--s48) var(--s32);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--s24);
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;opacity:.05;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.7) 1px,transparent 1px);background-size:24px 24px;
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.25;margin-bottom:8px}
.cta-band p{color:rgba(244,239,230,.75);font-size:15px;margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:var(--s12)}

/* 返回行 */
.back-row{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--s24);
  padding:var(--s32) 0 0;border-top:1px solid var(--line);margin-top:var(--s32);
}
.back-row .contact-line{font-size:14px;color:var(--ink-500)}
.back-row .contact-line b{color:var(--ink-900);font-weight:600}

/* 页脚 */
.site-footer{background:var(--brand-900);color:rgba(244,239,230,.78);padding:var(--s64) 0 var(--s32);margin-top:var(--s8)}
.site-footer .grid-gap{row-gap:var(--s32)}
.footer-brand strong{display:block;font-size:19px;font-weight:800;color:#fff;letter-spacing:-0.01em;margin-bottom:var(--s12)}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(244,239,230,.66);max-width:22em;margin:0}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:var(--s16);letter-spacing:.04em}
.footer-col ul li{font-size:14px;line-height:2;color:rgba(244,239,230,.66)}
.footer-col ul li a{color:rgba(244,239,230,.78);font-size:14px}
.footer-col ul li a:hover{color:var(--accent-500)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:var(--s12);
  margin-top:var(--s48);padding-top:var(--s24);border-top:1px solid rgba(244,239,230,.14);
  font-size:13px;color:rgba(244,239,230,.55);font-variant-numeric:tabular-nums;
}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* 响应式 */
@media screen and (max-width:1023px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .nav-actions .btn{display:none}
  .tab-bar{display:flex}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:var(--s24)}
  .faq-layout{grid-template-columns:1fr;gap:var(--s32)}
  .info-table{grid-template-columns:1fr}
  .info-q{border-right:0}
  .float-cta{bottom:calc(88px + env(safe-area-inset-bottom));right:16px;padding:12px 18px;font-size:14px}
  .page-hero{padding:48px 0 56px}
}
@media screen and (min-width:1024px){
  .nav-drawer{display:none}
  body{padding-bottom:0}
}
@media screen and (max-width:767px){
  .card-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{padding:var(--s32) var(--s24)}
  .step-item{gap:var(--s16)}
  .step-list::before{left:22px}
  .step-num{width:46px;height:46px;font-size:16px}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media screen and (max-width:520px){
  .page-hero h1{font-size:32px}
  .hero-btns .btn{width:100%}
  .brand-sub{display:none}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --ink-900:#12100E;
  --ink-700:#2A2723;
  --ink-500:#57534C;
  --ink-300:#8C867D;
  --brand-900:#0E3A33;
  --brand-700:#14544A;
  --brand-100:#DDE7E3;
  --accent-600:#D0613A;
  --accent-500:#E4764C;
  --sand-50:#FBF8F3;
  --sand-100:#F4EFE6;
  --sand-200:#E8E0D2;
  --line:#E2DACB;
  --white:#FFFFFF;
  --err:#B23A2E;
  --ok:#2F7D5B;
  --r-card:16px;
  --r-img:14px;
  --r-btn:8px;
  --sh-1:0 1px 2px rgba(20,16,12,.05);
  --sh-2:0 14px 34px -14px rgba(20,16,12,.16);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:96px; --sp-10:120px;
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",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;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-900);
  background:var(--sand-50);
  -webkit-font-smoothing:antialiased;
  padding-bottom:calc(76px + env(safe-area-inset-bottom));
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),opacity .22s var(--ease);}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,.accordion-title:focus-visible{
  outline:2px solid var(--accent-600);outline-offset:2px;border-radius:4px;
}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;color:var(--ink-900);}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
.grid-container{max-width:1240px;padding-left:20px;padding-right:20px;margin:0 auto;}
@media screen and (min-width:768px){.grid-container{padding-left:24px;padding-right:24px;}}
@media screen and (min-width:1024px){.grid-container{padding-left:32px;padding-right:32px;}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 24px;border-radius:var(--r-btn);
  border:1px solid transparent;background:transparent;color:var(--ink-900);
  transition:transform .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand-900);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover,.btn-primary:focus{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ghost{border-color:var(--ink-900);color:var(--ink-900);}
.btn-ghost:hover,.btn-ghost:focus{background:var(--ink-900);color:#fff;}
.btn-on-dark{border-color:rgba(255,255,255,.5);color:#fff;}
.btn-on-dark:hover,.btn-on-dark:focus{background:#fff;color:var(--brand-900);border-color:#fff;}
.btn-sm{padding:11px 18px;font-size:14px;}
.btn-text{position:relative;padding:4px 0;color:var(--accent-600);font-weight:600;font-size:15px;}
.btn-text::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--accent-600);transition:width .2s var(--ease);}
.btn-text:hover::after,.btn-text:focus::after{width:100%;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:200;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease),background .25s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .25s var(--ease);}
.site-header.is-scrolled .nav-wrap{height:60px;}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;background:var(--brand-900);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:-.01em;}
.brand-text em{font-style:normal;font-size:11px;color:var(--ink-300);letter-spacing:.04em;}
.main-nav{display:none;align-items:center;gap:4px;}
.main-nav a{
  position:relative;padding:8px 14px;font-size:15px;color:var(--ink-500);border-radius:6px;font-weight:500;
}
.main-nav a:hover{color:var(--ink-900);background:var(--sand-100);}
.main-nav a.is-active{color:var(--ink-900);font-weight:600;}
.main-nav a.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--accent-600);border-radius:2px;}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-cta{display:none;}
.nav-toggle{
  width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:10px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink-900);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}
@media screen and (min-width:1024px){
  .main-nav{display:flex;}
  .nav-cta{display:inline-flex;}
  .nav-toggle{display:none;}
}
.scroll-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:transparent;}
.scroll-progress span{display:block;height:100%;width:0;background:var(--accent-600);transition:width .1s linear;}

.nav-drawer{
  position:fixed;left:0;right:0;top:72px;z-index:190;
  background:#fff;border-bottom:1px solid var(--line);
  padding:12px 20px 24px;
  transform:translateY(-8px);opacity:0;pointer-events:none;
  transition:opacity .22s var(--ease),transform .22s var(--ease);
  box-shadow:var(--sh-2);
}
.nav-drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
.nav-drawer a{display:block;padding:14px 4px;font-size:16px;color:var(--ink-700);border-bottom:1px solid var(--line);}
.nav-drawer a:last-child{border-bottom:0;}
.nav-drawer a.is-active{color:var(--accent-600);font-weight:600;}
@media screen and (min-width:1024px){.nav-drawer{display:none;}}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  color:#fff;padding:88px 0 80px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,58,51,.86),rgba(14,58,51,.92)),
             repeating-linear-gradient(0deg,rgba(255,255,255,.05) 0 1px,transparent 1px 32px),
             repeating-linear-gradient(90deg,rgba(255,255,255,.05) 0 1px,transparent 1px 32px);
}
.page-hero .grid-container{position:relative;z-index:1;}
.crumb{font-size:13px;color:rgba(255,255,255,.72);margin-bottom:18px;}
.crumb a{color:rgba(255,255,255,.72);}
.crumb a:hover{color:#fff;}
.crumb span.sep{margin:0 8px;opacity:.6;}
.page-hero h1{
  color:#fff;font-size:clamp(32px,5.6vw,62px);font-weight:800;line-height:1.12;letter-spacing:-.02em;
}
.hero-lead{max-width:640px;margin-top:16px;font-size:17px;color:rgba(255,255,255,.86);line-height:1.8;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:999px;font-size:13px;font-weight:500;
  background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.22);
}
.tag-accent{background:var(--accent-600);border-color:var(--accent-600);color:#fff;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}

/* ---------- sections ---------- */
.section{padding:72px 0;}
@media screen and (min-width:768px){.section{padding:96px 0;}}
.section-sand{background:var(--sand-100);}
.section-dark{background:var(--brand-900);color:#fff;}
.section-dark h2,.section-dark h3{color:#fff;}
.section-head{margin-bottom:40px;max-width:760px;}
.eyebrow{
  display:flex;align-items:center;gap:10px;
  font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--accent-600);margin-bottom:14px;
}
.eyebrow::before{content:"";width:28px;height:2px;background:var(--accent-600);border-radius:2px;}
.section-head h2{font-size:clamp(24px,3.2vw,40px);line-height:1.2;font-weight:700;}
.section-head .sub{margin-top:14px;color:var(--ink-500);font-size:16px;}
.section-dark .section-head .sub{color:rgba(255,255,255,.75);}

/* ---------- prep split ---------- */
.split{display:grid;grid-template-columns:1fr;gap:32px;align-items:center;}
@media screen and (min-width:900px){.split{grid-template-columns:1fr 1fr;gap:56px;}}
.split-media{position:relative;border-radius:var(--r-img);overflow:hidden;background:var(--sand-200);box-shadow:var(--sh-1);}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.split-media figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;font-size:13px;color:#fff;
  background:linear-gradient(180deg,rgba(14,58,51,0),rgba(14,58,51,.82));
}
.check-list li{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);}
.check-list li:last-child{border-bottom:0;}
.check-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;background:var(--brand-100);
  display:flex;align-items:center;justify-content:center;margin-top:3px;
}
.check-icon svg{width:14px;height:14px;stroke:var(--brand-900);stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round;}
.check-list strong{display:block;font-size:16px;font-weight:600;margin-bottom:2px;}
.check-list span{font-size:15px;color:var(--ink-500);line-height:1.75;}

/* ---------- steps ---------- */
.step-list{position:relative;max-width:900px;}
.step-list::before{
  content:"";position:absolute;left:35px;top:8px;bottom:8px;width:2px;background:var(--line);
}
.step{position:relative;display:grid;grid-template-columns:72px 1fr;gap:28px;padding-bottom:44px;}
.step:last-child{padding-bottom:0;}
.step-num{
  position:relative;z-index:1;background:var(--sand-50);
  font-size:clamp(26px,3.4vw,38px);font-weight:800;line-height:1.1;
  font-variant-numeric:tabular-nums;color:var(--accent-600);letter-spacing:-.02em;
  padding:2px 0;text-align:center;
}
.section-sand .step-num{background:var(--sand-100);}
.step-body h3{font-size:19px;font-weight:600;margin-bottom:10px;line-height:1.35;}
.step-body p{color:var(--ink-500);font-size:16px;max-width:62ch;}
.step-points{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.step-points span{
  font-size:13px;color:var(--brand-900);background:var(--brand-100);
  padding:5px 12px;border-radius:999px;
}
@media screen and (max-width:567px){
  .step-list::before{left:23px;}
  .step{grid-template-columns:48px 1fr;gap:16px;padding-bottom:36px;}
  .step-num{font-size:24px;}
}

/* ---------- notice card ---------- */
.notice{
  background:var(--sand-100);border-left:3px solid var(--accent-600);
  border-radius:0 var(--r-card) var(--r-card) 0;
  padding:28px 30px;box-shadow:var(--sh-1);
}
.notice h3{font-size:19px;margin-bottom:14px;}
.notice ul li{position:relative;padding-left:18px;margin-bottom:10px;color:var(--ink-500);font-size:15px;}
.notice ul li:last-child{margin-bottom:0;}
.notice ul li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--accent-600);
}

/* ---------- info list ---------- */
.info-list{border-top:1px solid var(--line);}
.info-row{
  display:grid;grid-template-columns:1fr;gap:6px;
  padding:22px 0;border-bottom:1px solid var(--line);
}
@media screen and (min-width:768px){
  .info-row{grid-template-columns:280px 1fr;gap:32px;align-items:baseline;}
}
.info-row dt{font-size:16px;font-weight:600;color:var(--ink-900);}
.info-row dd{margin:0;font-size:15px;color:var(--ink-500);line-height:1.8;}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media screen and (min-width:1024px){.faq-grid{grid-template-columns:4fr 8fr;gap:56px;align-items:start;}}
.accordion{background:transparent;border:0;margin:0;}
.accordion-item{border:1px solid var(--line) !important;border-radius:var(--r-card);background:#fff;margin-bottom:12px;overflow:hidden;}
.accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;font-size:17px;font-weight:600;color:var(--ink-900);
  background:#fff;border:0;transition:background .22s var(--ease);
}
.accordion-title:hover{background:var(--sand-50);}
.accordion-title::before{display:none;}
.accordion-title::after{
  content:"";flex:0 0 14px;width:14px;height:14px;
  background:
    linear-gradient(var(--accent-600),var(--accent-600)) center/14px 2px no-repeat,
    linear-gradient(var(--accent-600),var(--accent-600)) center/2px 14px no-repeat;
  transition:transform .3s var(--ease);
}
.accordion-item.is-active .accordion-title::after{transform:rotate(180deg);}
.accordion-content{padding:0 22px 22px;font-size:15px;color:var(--ink-500);line-height:1.85;border:0 !important;background:#fff;}
.accordion-content p{font-size:15px;}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--brand-900);color:#fff;border-radius:var(--r-card);
  padding:48px 32px;display:grid;gap:24px;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(208,97,58,.35),transparent 70%);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,32px);line-height:1.25;position:relative;z-index:1;}
.cta-band p{color:rgba(255,255,255,.78);margin-top:12px;max-width:56ch;position:relative;z-index:1;}
.cta-band .actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1;}
@media screen and (min-width:900px){
  .cta-band{grid-template-columns:1.4fr .8fr;align-items:center;padding:56px 48px;}
  .cta-band .actions{justify-content:flex-end;}
}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(251,248,243,.82);padding:64px 0 0;margin-top:0;}
.site-footer .grid-gap{row-gap:32px;}
.footer-brand strong{display:block;font-size:18px;color:#fff;margin-bottom:10px;font-weight:800;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(251,248,243,.7);max-width:34ch;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;font-size:14px;color:rgba(251,248,243,.72);}
.footer-col ul li a{color:rgba(251,248,243,.72);}
.footer-col ul li a:hover{color:#fff;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(251,248,243,.16);
  padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(251,248,243,.6);
}

/* ---------- floating cta ---------- */
.float-cta{
  position:fixed;right:16px;bottom:calc(88px + env(safe-area-inset-bottom));z-index:880;
  background:var(--accent-600);color:#fff;font-size:15px;font-weight:600;
  padding:13px 18px;border-radius:var(--r-btn);box-shadow:var(--sh-2);
  opacity:0;transform:translateY(10px);pointer-events:none;
  transition:opacity .24s var(--ease),transform .24s var(--ease),background .22s var(--ease);
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover,.float-cta:focus{background:var(--accent-500);}
@media screen and (min-width:1024px){
  .float-cta{right:24px;bottom:24px;padding:15px 22px;font-size:15px;}
}

/* ---------- bottom tab ---------- */
.tab-bar-mobile{
  position:fixed;left:0;right:0;bottom:0;z-index:900;
  display:flex;background:rgba(255,255,255,.96);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.tab-bar-mobile a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  padding:10px 2px 9px;font-size:11px;color:var(--ink-300);position:relative;
}
.tab-bar-mobile a svg{width:22px;height:22px;stroke:var(--ink-300);stroke-width:1.5;fill:none;stroke-linecap:round;stroke-linejoin:round;}
.tab-bar-mobile a.is-active{color:var(--accent-600);}
.tab-bar-mobile a.is-active svg{stroke:var(--accent-600);}
.tab-bar-mobile a.is-active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:28px;height:2px;background:var(--accent-600);border-radius:2px;}
@media screen and (min-width:1024px){.tab-bar-mobile{display:none;} body{padding-bottom:0;}}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease);}
.reveal.is-in{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}