/* roulang page: index */
:root{
  --bg:#F7F5F0;
  --bg-2:#EFEBE3;
  --ink:#0E0F11;
  --ink-2:#2A2D31;
  --muted:#6B6F76;
  --line:rgba(14,15,17,.10);
  --accent:#FF6A2A;
  --accent-2:#5BC8B8;
  --success:#1F8A5B;
  --warning:#D98E04;
  --danger:#D64545;
  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:24px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(14,15,17,.04), 0 12px 32px rgba(14,15,17,.06);
  --shadow-2:0 18px 48px rgba(14,15,17,.10);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"MiSans","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
body h1,body h2,body h3,body h4{font-weight:800;line-height:1.15;letter-spacing:-.01em;margin:0}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:8px}
::selection{background:rgba(255,106,42,.22)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-2)}
::-webkit-scrollbar-thumb{background:rgba(14,15,17,.22);border-radius:999px;border:2px solid var(--bg-2)}
::-webkit-scrollbar-thumb:hover{background:rgba(14,15,17,.36)}

/* ---------- 容器与板块 ---------- */
.container{width:100%;max-width:1280px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.container{padding-left:32px;padding-right:32px}}
@media(min-width:1024px){.container{max-width:1360px;padding-left:40px;padding-right:40px}}
.section{padding:56px 0}
@media(min-width:768px){.section{padding:82px 0}}
@media(min-width:1024px){.section{padding:112px 0}}
.section-head{max-width:740px;margin-bottom:36px}
@media(min-width:768px){.section-head{margin-bottom:52px}}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.14em}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--accent)}
.section-title{font-size:clamp(1.6rem,3vw,2.45rem);font-weight:800;margin:16px 0 14px}
.section-desc{font-size:16px;line-height:1.85;color:var(--muted)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease),background .24s var(--ease);
}
.site-header.is-stuck{box-shadow:0 8px 28px rgba(14,15,17,.07);background:rgba(255,255,255,.95)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--ink);color:#fff;
  display:grid;place-items:center;font-weight:900;font-size:17px;line-height:1;
  transition:background .2s var(--ease);
}
.brand:hover .brand-mark{background:var(--accent)}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-line{font-size:15px;font-weight:800;letter-spacing:-.01em}
.brand-line-2{font-size:11.5px;font-weight:600;color:var(--muted);letter-spacing:.08em}
.nav-pill{display:none;align-items:center;gap:2px;background:rgba(239,235,227,.72);border:1px solid var(--line);border-radius:var(--radius-pill);padding:4px}
@media(min-width:1024px){.nav-pill{display:flex}}
.pill{padding:8px 16px;border-radius:var(--radius-pill);font-size:14.5px;font-weight:600;color:var(--ink-2);white-space:nowrap;transition:background .18s var(--ease),color .18s var(--ease)}
.pill:hover{background:#fff;color:var(--ink)}
.pill.active{background:var(--ink);color:#fff}
.nav-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;border-radius:12px;display:none;place-items:center;
  color:var(--ink-2);transition:background .18s var(--ease),transform .24s var(--ease),color .18s var(--ease);
}
@media(min-width:1024px){.icon-btn{display:grid}}
.icon-btn:hover{background:var(--bg-2);color:var(--ink);transform:rotate(90deg)}
.nav-cta{display:none}
@media(min-width:1024px){.nav-cta{display:inline-flex}}
.hamburger{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;color:var(--ink)}
.hamburger:hover{background:var(--bg-2)}
@media(min-width:1024px){.hamburger{display:none}}
.burger-lines{width:20px;height:14px;position:relative}
.burger-lines span{position:absolute;left:0;width:20px;height:2px;border-radius:2px;background:var(--ink);transition:transform .24s var(--ease),opacity .2s var(--ease)}
.burger-lines span:nth-child(1){top:0}
.burger-lines span:nth-child(2){top:6px}
.burger-lines span:nth-child(3){top:12px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);font-weight:700;font-size:15px;
  padding:12px 24px;white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .24s var(--ease),transform .2s var(--ease);
}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(255,106,42,.22)}
.btn-accent:hover{background:#F05416;transform:translateY(-2px);box-shadow:0 14px 32px rgba(255,106,42,.34)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:var(--accent);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid rgba(14,15,17,.18)}
.btn-ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn-light:hover{background:var(--bg-2);transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-lg{padding:15px 30px;font-size:16px}
.btn-block{width:100%}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;display:flex;align-items:center;min-height:88vh;padding:72px 0 64px;background:var(--bg)}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center right}
.hero-mask{position:absolute;inset:0;background:linear-gradient(100deg,rgba(247,245,240,.97) 0%,rgba(247,245,240,.90) 40%,rgba(247,245,240,.52) 72%,rgba(247,245,240,.24) 100%)}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:44px;align-items:center}
@media(min-width:1024px){.hero-inner{grid-template-columns:5fr 7fr;gap:56px}}
.badge{display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:var(--radius-pill);background:#fff;border:1px solid var(--line);font-size:13px;font-weight:600;color:var(--ink-2);box-shadow:var(--shadow-1)}
.badge i{width:7px;height:7px;border-radius:50%;background:var(--accent-2);flex:none;animation:softpulse 2.6s var(--ease) infinite}
@keyframes softpulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.8)}}
.hero h1{font-size:clamp(2.05rem,5.2vw,3.9rem);font-weight:900;line-height:1.1;margin:22px 0 18px;letter-spacing:-.02em}
.hero-sub{font-size:16.5px;line-height:1.9;color:var(--ink-2);max-width:580px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:28px;font-size:14px;font-weight:600;color:var(--ink-2)}
.hero-points li{display:flex;align-items:center;gap:9px}
.hero-points li::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--accent);flex:none}
.hero-visual{position:relative}
.hero-card{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-2)}
.hero-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-float{
  position:absolute;right:14px;bottom:-22px;display:flex;align-items:center;gap:12px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:13px 18px;box-shadow:var(--shadow-2);max-width:320px;
}
.hero-float strong{display:block;font-size:14px;font-weight:800}
.hero-float span{display:block;font-size:12.5px;color:var(--muted);line-height:1.6}
.pulse{width:10px;height:10px;border-radius:50%;background:var(--success);flex:none;box-shadow:0 0 0 4px rgba(31,138,91,.14)}

/* ---------- 信任条 ---------- */
.trustbar{background:rgba(255,255,255,.66);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.trustbar-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:14px 28px;padding:20px 0}
.trust-item{display:flex;align-items:center;gap:9px;font-size:14px;font-weight:600;color:var(--ink-2)}
.trust-item svg{width:17px;height:17px;color:var(--accent);flex:none}
.trust-sep{width:1px;height:16px;background:var(--line);display:none}
@media(min-width:1024px){.trust-sep{display:block}}

/* ---------- 非对称入口网格 ---------- */
.bento{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:1024px){
  .bento{grid-template-columns:1.35fr 1fr;grid-template-rows:repeat(4,minmax(118px,auto))}
  .entry-card-lg{grid-row:span 4}
}
.entry-card-lg{
  position:relative;display:flex;align-items:flex-end;overflow:hidden;
  border-radius:var(--radius-lg);min-height:330px;color:#fff;
  border:1px solid var(--line);box-shadow:var(--shadow-1);
  transition:box-shadow .24s var(--ease),transform .24s var(--ease);
}
.entry-card-lg:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.entry-card-lg img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.entry-card-lg:hover img{transform:scale(1.04)}
.entry-card-lg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,15,17,.10) 0%,rgba(14,15,17,.56) 55%,rgba(14,15,17,.86) 100%)}
.entry-card-lg .entry-body{position:relative;z-index:2;padding:30px;max-width:520px}
.entry-card-lg h3{font-size:clamp(1.35rem,2.2vw,1.85rem);font-weight:800;margin:12px 0 10px}
.entry-card-lg p{font-size:14.5px;line-height:1.8;color:rgba(247,245,240,.86)}
.entry-card-sm{
  display:flex;align-items:stretch;overflow:hidden;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-1);
  transition:box-shadow .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.entry-card-sm:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(255,106,42,.5)}
.entry-card-sm .thumb{width:126px;flex:none;overflow:hidden;background:var(--bg-2)}
.entry-card-sm .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.entry-card-sm:hover .thumb img{transform:scale(1.05)}
.entry-card-sm .body{padding:18px 22px;display:flex;flex-direction:column;justify-content:center;gap:6px;min-width:0}
.entry-card-sm h3{font-size:17px;font-weight:800}
.entry-card-sm p{font-size:13.5px;line-height:1.72;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-arrow{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;color:var(--accent);margin-top:4px;transition:gap .2s var(--ease)}
.entry-card-sm:hover .card-arrow{gap:11px}
.tag{
  display:inline-flex;align-items:center;padding:4px 11px;border-radius:var(--radius-pill);
  background:rgba(91,200,184,.16);color:#1E6E64;font-size:12px;font-weight:700;letter-spacing:.04em;
}
.entry-card-lg .tag{background:rgba(255,255,255,.18);color:#fff;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}

/* ---------- 评价轮播 ---------- */
.review-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px}
.review-nav{display:none;gap:10px}
@media(min-width:1024px){.review-nav{display:flex}}
.review-btn{
  width:46px;height:46px;border-radius:var(--radius-pill);border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;color:var(--ink);transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.review-btn:hover{background:var(--ink);color:#fff;transform:translateY(-2px)}
.review-track{display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 2px 22px;scrollbar-width:none}
.review-track::-webkit-scrollbar{display:none}
.review-card{
  flex:0 0 min(84vw,400px);scroll-snap-align:start;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow-1);
  transition:box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.review-card:hover{box-shadow:var(--shadow-2);border-color:rgba(255,106,42,.4)}
.review-top{display:flex;align-items:center;gap:13px;margin-bottom:14px}
.avatar{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:800;font-size:16px;background:var(--ink);flex:none}
.avatar.a2{background:#2E6F63}
.avatar.a3{background:#8A4B22}
.avatar.a4{background:#4B4F8A}
.review-name{font-size:15px;font-weight:800;line-height:1.4}
.review-src{font-size:12.5px;color:var(--muted)}
.stars{color:var(--accent);font-size:13px;letter-spacing:3px;margin-bottom:10px}
.review-card p{font-size:14.5px;line-height:1.85;color:var(--ink-2)}

/* ---------- 保障条 ---------- */
.guard{background:var(--ink);color:#F7F5F0;border-radius:28px;overflow:hidden;display:grid;grid-template-columns:1fr}
@media(min-width:768px){.guard{grid-template-columns:repeat(4,1fr)}}
.guard-item{padding:26px 26px 28px;border-bottom:1px solid rgba(247,245,240,.14);transition:background .24s var(--ease)}
.guard-item:last-child{border-bottom:0}
@media(min-width:768px){
  .guard-item{border-bottom:0;border-right:1px solid rgba(247,245,240,.14)}
  .guard-item:last-child{border-right:0}
}
.guard-item:hover{background:rgba(255,138,92,.10)}
.guard-icon{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:rgba(255,138,92,.16);color:#FF8A5C;margin-bottom:14px}
.guard-item h3{font-size:16.5px;font-weight:800;margin-bottom:8px}
.guard-item p{font-size:13.5px;line-height:1.78;color:rgba(247,245,240,.72)}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media(min-width:1024px){.news-grid{grid-template-columns:300px 1fr;gap:56px}}
.news-aside{align-self:start}
@media(min-width:1024px){.news-aside{position:sticky;top:100px}}
.news-aside h2{font-size:clamp(1.5rem,2.4vw,2.1rem);margin:16px 0 14px}
.news-aside p{font-size:15px;line-height:1.85;color:var(--muted);margin-bottom:24px}
.news-list{border-top:1px solid var(--line)}
.news-item{
  position:relative;display:flex;align-items:center;gap:18px;
  padding:22px 20px 22px 22px;border-bottom:1px solid var(--line);
  transition:background .22s var(--ease),padding-left .22s var(--ease);
}
.news-item::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:3px;background:var(--accent);
  transition:height .24s var(--ease);
}
.news-item:hover{background:var(--bg-2);padding-left:30px}
.news-item:hover::before{height:56%}
.news-body{flex:1;min-width:0}
.news-meta{display:flex;align-items:center;gap:12px;margin-bottom:8px;flex-wrap:wrap}
.news-meta time{font-size:12.5px;color:var(--muted);letter-spacing:.02em}
.news-title{font-size:18px;font-weight:700;line-height:1.5;transition:color .2s var(--ease)}
.news-item:hover .news-title{color:var(--accent)}
.news-summary{
  margin-top:7px;font-size:14px;line-height:1.78;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-arrow{flex:none;color:var(--muted);font-size:18px;transition:transform .22s var(--ease),color .22s var(--ease)}
.news-item:hover .news-arrow{transform:translateX(5px);color:var(--accent)}
.news-empty{
  background:var(--bg);border:1px dashed var(--line);border-radius:var(--radius-lg);
  padding:52px 24px;text-align:center;color:var(--muted);font-size:15px;
}
.news-empty a{color:var(--accent);font-weight:700}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 4px;font-size:17px;font-weight:700;transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--accent)}
.faq-icon{position:relative;width:22px;height:22px;flex:none;transition:transform .28s var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--ink);border-radius:2px;transition:background .28s var(--ease)}
.faq-icon::before{left:0;top:50%;width:22px;height:2px;transform:translateY(-50%)}
.faq-icon::after{top:0;left:50%;width:2px;height:22px;transform:translateX(-50%)}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-item[open] .faq-icon::before,.faq-item[open] .faq-icon::after{background:var(--accent)}
.faq-body{padding:0 4px 26px;font-size:15.5px;line-height:1.9;color:var(--ink-2);max-width:820px}

/* ---------- CTA ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:28px;background:var(--ink);color:#F7F5F0;padding:48px 28px}
@media(min-width:1024px){.cta-band{padding:66px 56px}}
.cta-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.2}
.cta-band::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(14,15,17,.94) 0%,rgba(14,15,17,.72) 58%,rgba(14,15,17,.40) 100%)}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
@media(min-width:1024px){.cta-inner{grid-template-columns:1.5fr 1fr;gap:48px}}
.cta-inner h2{font-size:clamp(1.6rem,2.8vw,2.35rem);margin-bottom:14px}
.cta-inner p{font-size:15.5px;line-height:1.85;color:rgba(247,245,240,.78);max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media(min-width:1024px){.cta-actions{justify-content:flex-end}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#EDE9E1;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:38px}
@media(min-width:768px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1.1fr}}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px}
.footer-brand .brand-mark{background:#F7F5F0;color:var(--ink)}
.footer-brand .brand-line{color:#fff}
.footer-brand .brand-line-2{color:#9A968E}
.footer-desc{font-size:14px;line-height:1.9;color:#A9A59D;max-width:360px}
.footer-col h4{font-size:14px;font-weight:800;color:#fff;letter-spacing:.08em;margin-bottom:16px}
.footer-link{display:block;font-size:14.5px;color:#B9B5AD;padding:6px 0;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-link:hover{color:var(--accent);transform:translateX(3px)}
.footer-note{font-size:13.5px;line-height:1.9;color:#8E8A83;margin-top:12px}
.footer-bottom{
  border-top:1px solid rgba(247,245,240,.12);margin-top:52px;padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8E8A83;
}

/* ---------- 移动端抽屉 ---------- */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(88vw,380px);z-index:120;
  background:var(--bg);transform:translateX(102%);
  transition:transform .32s var(--ease);display:flex;flex-direction:column;
  padding:20px 22px 26px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:var(--bg-2);font-size:20px;line-height:1}
.drawer-close:hover{background:var(--ink);color:#fff}
.drawer-nav{display:flex;flex-direction:column}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:56px;font-size:20px;font-weight:700;border-bottom:1px solid var(--line);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.drawer-link:hover,.drawer-link.active{color:var(--accent);padding-left:6px}
.drawer-foot{margin-top:auto;padding-top:26px}
.drawer-mask{
  position:fixed;inset:0;z-index:110;background:rgba(14,15,17,.5);
  opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s var(--ease);
}
.drawer-mask.open{opacity:1;visibility:visible}

/* ---------- 动效降级 ---------- */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
    --bg:#F7F5F0;
    --bg-2:#EFEBE3;
    --ink:#0E0F11;
    --ink-2:#2A2D31;
    --muted:#6B6F76;
    --line:rgba(14,15,17,.10);
    --accent:#FF6A2A;
    --accent-2:#5BC8B8;
    --success:#1F8A5B;
    --warning:#D98E04;
    --danger:#D64545;
    --radius-sm:10px;
    --radius-md:16px;
    --radius-lg:24px;
    --radius-pill:999px;
    --shadow-1:0 1px 2px rgba(14,15,17,.04), 0 12px 32px rgba(14,15,17,.06);
    --shadow-2:0 18px 48px rgba(14,15,17,.10);
    --ease:cubic-bezier(.2,.8,.2,1);
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body.page-body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:"MiSans","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.8;
    letter-spacing:.01em;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;height:auto}
  a{color:inherit;text-decoration:none;transition:color 180ms var(--ease),background-color 180ms var(--ease),border-color 180ms var(--ease)}
  button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4{margin:0;letter-spacing:-.01em;line-height:1.2}
  p{margin:0}
  :focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
  body.no-scroll{overflow:hidden}

  .container{
    width:100%;
    max-width:1280px;
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }
  @media (min-width:768px){.container{padding-left:32px;padding-right:32px}}
  @media (min-width:1024px){.container{max-width:1320px;padding-left:40px;padding-right:40px}}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(247,245,240,.88);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid transparent;
    transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease),background-color 200ms var(--ease);
  }
  .site-header.is-stuck{
    border-bottom-color:var(--line);
    box-shadow:0 8px 24px rgba(14,15,17,.05);
    background:rgba(247,245,240,.96);
  }
  .header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    min-height:74px;
  }
  .brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
  .brand-mark{
    width:42px;height:42px;border-radius:13px;
    background:var(--ink);color:var(--bg);
    display:flex;align-items:center;justify-content:center;
    font-weight:800;font-size:19px;letter-spacing:0;
    transition:background-color 200ms var(--ease),transform 200ms var(--ease);
  }
  .brand:hover .brand-mark{background:var(--accent);transform:translateY(-1px)}
  .brand-text{display:flex;flex-direction:column;line-height:1.15}
  .brand-line{font-size:16px;font-weight:800;letter-spacing:.02em;color:var(--ink)}
  .brand-line-2{font-size:11.5px;font-weight:600;color:var(--muted);letter-spacing:.14em}

  .nav-pill{display:none;align-items:center;gap:2px}
  @media (min-width:1024px){.nav-pill{display:flex}}
  .pill{
    display:inline-flex;align-items:center;
    padding:9px 16px;border-radius:var(--radius-pill);
    font-size:14.5px;font-weight:600;color:var(--ink-2);
    white-space:nowrap;
    transition:background-color 180ms var(--ease),color 180ms var(--ease);
  }
  .pill:hover{background:var(--bg-2);color:var(--ink)}
  .pill.active{background:var(--ink);color:#F7F5F0}

  .header-actions{display:flex;align-items:center;gap:10px}
  .icon-btn{
    width:42px;height:42px;border-radius:12px;
    display:none;align-items:center;justify-content:center;
    color:var(--ink-2);border:1px solid transparent;
    transition:background-color 180ms var(--ease),transform 240ms var(--ease),color 180ms var(--ease);
  }
  @media (min-width:768px){.icon-btn{display:inline-flex}}
  .icon-btn:hover{background:var(--bg-2);color:var(--ink);transform:rotate(90deg)}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 22px;
    border-radius:14px;
    font-size:15px;font-weight:700;letter-spacing:.01em;
    border:1px solid transparent;
    transition:background-color 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 200ms var(--ease);
  }
  .btn:active{transform:translateY(1px)}
  .btn-dark{background:var(--ink);color:#F7F5F0}
  .btn-dark:hover{background:var(--accent);color:#fff;box-shadow:0 12px 28px rgba(255,106,42,.28)}
  .btn-accent{background:var(--accent);color:#fff}
  .btn-accent:hover{background:#F2551A;box-shadow:0 12px 28px rgba(255,106,42,.30)}
  .btn-outline{background:transparent;border-color:var(--line);color:var(--ink)}
  .btn-outline:hover{border-color:var(--ink);background:#fff}
  .btn-light{background:#F7F5F0;color:var(--ink)}
  .btn-light:hover{background:var(--accent);color:#fff}
  .btn-sm{height:40px;padding:0 16px;border-radius:12px;font-size:14px}
  .header-cta{display:none}
  @media (min-width:768px){.header-cta{display:inline-flex}}

  .menu-btn{
    width:44px;height:44px;border-radius:12px;
    display:inline-flex;align-items:center;justify-content:center;
    border:1px solid var(--line);background:#fff;
  }
  @media (min-width:1024px){.menu-btn{display:none}}

  /* ---------- 移动抽屉 ---------- */
  .drawer{
    position:fixed;inset:0;z-index:90;
    background:rgba(14,15,17,.45);
    opacity:0;visibility:hidden;
    transition:opacity 220ms var(--ease),visibility 220ms var(--ease);
  }
  .drawer.open{opacity:1;visibility:visible}
  .drawer-panel{
    position:absolute;top:0;right:0;
    height:100%;width:min(86vw,380px);
    background:var(--bg);
    display:flex;flex-direction:column;
    padding:20px 20px 28px;
    transform:translateX(102%);
    transition:transform 260ms var(--ease);
    overflow-y:auto;
  }
  .drawer.open .drawer-panel{transform:none}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
  .drawer-nav{display:flex;flex-direction:column;gap:2px;flex:1}
  .drawer-link{
    display:flex;align-items:center;justify-content:space-between;
    min-height:54px;padding:0 4px;
    font-size:20px;font-weight:700;color:var(--ink-2);
    border-bottom:1px solid var(--line);
  }
  .drawer-link:hover{color:var(--accent)}
  .drawer-link.active{color:var(--ink)}
  .drawer-link.active::after{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent)}
  .drawer-cta{margin-top:24px;width:100%;height:52px;font-size:16px}

  /* ---------- 文章头部 ---------- */
  .article-hero{
    position:relative;
    padding:34px 0 40px;
    background-image:linear-gradient(180deg,rgba(247,245,240,.92) 0%,rgba(247,245,240,.98) 62%,#F7F5F0 100%),url('/assets/images/backpic/back-1.png');
    background-size:cover;
    background-position:center;
    border-bottom:1px solid var(--line);
    overflow:hidden;
  }
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:13px;color:var(--muted);margin-bottom:22px;
  }
  .breadcrumb a:hover{color:var(--accent)}
  .breadcrumb .sep{opacity:.5}
  .breadcrumb .current{color:var(--ink-2);font-weight:600}

  .article-hero h1{
    font-size:clamp(1.85rem,4.2vw,3.05rem);
    font-weight:900;
    line-height:1.18;
    letter-spacing:-.015em;
    max-width:940px;
    margin-bottom:20px;
  }
  .meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;font-size:13.5px;color:var(--muted)}
  .chip{
    display:inline-flex;align-items:center;gap:6px;
    padding:5px 12px;border-radius:var(--radius-pill);
    font-size:12.5px;font-weight:700;letter-spacing:.02em;
    border:1px solid var(--line);background:#fff;color:var(--ink-2);
  }
  .chip-accent{background:rgba(255,106,42,.10);border-color:rgba(255,106,42,.24);color:#C1440E}
  .chip-teal{background:rgba(91,200,184,.14);border-color:rgba(91,200,184,.30);color:#1F6F64}
  .meta-dot{width:4px;height:4px;border-radius:50%;background:var(--line)}

  /* ---------- 布局 ---------- */
  .article-wrap{padding:48px 0 64px}
  .layout-grid{display:grid;grid-template-columns:1fr;gap:32px}
  @media (min-width:1024px){
    .layout-grid{grid-template-columns:minmax(0,1fr) 340px;gap:48px}
  }

  /* ---------- 正文 ---------- */
  .article-body{
    font-size:17px;
    line-height:1.9;
    color:var(--ink-2);
    max-width:820px;
    letter-spacing:.012em;
  }
  .article-body > *:first-child{margin-top:0}
  .article-body p{margin:0 0 1.15em}
  .article-body h2{
    position:relative;
    margin:2.3em 0 .85em;
    padding-left:16px;
    font-size:clamp(1.35rem,2.4vw,1.75rem);
    font-weight:800;
    color:var(--ink);
    line-height:1.35;
  }
  .article-body h2::before{
    content:"";position:absolute;left:0;top:.3em;bottom:.3em;width:3px;
    border-radius:2px;background:var(--accent);
  }
  .article-body h3{
    margin:1.9em 0 .7em;
    font-size:1.2rem;font-weight:700;color:var(--ink);line-height:1.4;
  }
  .article-body h4{margin:1.6em 0 .6em;font-size:1.05rem;font-weight:700;color:var(--ink)}
  .article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.35em}
  .article-body ul li{list-style:disc;margin:.5em 0}
  .article-body ol li{list-style:decimal;margin:.5em 0}
  .article-body li::marker{color:var(--accent)}
  .article-body strong{color:var(--ink);font-weight:700}
  .article-body a{color:#1F6F64;border-bottom:1px solid rgba(91,200,184,.55)}
  .article-body a:hover{color:var(--accent);border-bottom-color:var(--accent)}
  .article-body blockquote{
    margin:1.6em 0;padding:18px 22px;
    background:var(--bg-2);
    border-left:3px solid var(--accent);
    border-radius:12px;
    color:var(--ink-2);
  }
  .article-body blockquote p:last-child{margin-bottom:0}
  .article-body img{border-radius:16px;margin:1.6em 0;box-shadow:var(--shadow-1)}
  .article-body figure{margin:1.6em 0}
  .article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
  .article-body table{
    display:block;width:100%;overflow-x:auto;
    border-collapse:collapse;font-size:15px;margin:1.6em 0;
    border:1px solid var(--line);border-radius:14px;
  }
  .article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}
  .article-body th{background:var(--bg-2);color:var(--ink);font-weight:700}
  .article-body tr:last-child td{border-bottom:0}
  .article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}

  .empty-state{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:44px 28px;text-align:center;box-shadow:var(--shadow-1);
  }
  .empty-state h2{font-size:1.4rem;font-weight:800;color:var(--ink);margin-bottom:12px}
  .empty-state p{color:var(--muted);margin-bottom:22px}
  .empty-state .btn{margin:0 auto}

  /* ---------- 右侧栏 ---------- */
  .sidebar{display:flex;flex-direction:column;gap:20px}
  @media (min-width:1024px){
    .sidebar{position:sticky;top:96px;align-self:start}
  }
  .side-card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-md);
    padding:22px;
    box-shadow:var(--shadow-1);
  }
  .side-card h3{
    font-size:14px;font-weight:800;color:var(--ink);
    letter-spacing:.08em;margin-bottom:14px;
  }
  .toc-list{display:flex;flex-direction:column;gap:2px;max-height:340px;overflow:auto}
  .toc-item a{
    display:block;padding:8px 10px;border-radius:10px;
    font-size:14px;color:var(--ink-2);line-height:1.6;
    border-left:2px solid transparent;
  }
  .toc-item a:hover{background:var(--bg-2);color:var(--ink);border-left-color:var(--accent)}
  .toc-sub a{padding-left:22px;font-size:13px;color:var(--muted)}

  .side-links{display:flex;flex-direction:column;gap:4px}
  .side-link{
    display:flex;align-items:center;justify-content:space-between;
    padding:10px 10px;border-radius:10px;font-size:14px;color:var(--ink-2);
  }
  .side-link span.arrow{color:var(--muted);transition:transform 180ms var(--ease),color 180ms var(--ease)}
  .side-link:hover{background:var(--bg-2);color:var(--ink)}
  .side-link:hover span.arrow{transform:translateX(4px);color:var(--accent)}

  .side-cta{
    background:var(--ink);color:#F7F5F0;border-radius:var(--radius-md);
    padding:24px;border:1px solid var(--ink);
  }
  .side-cta h3{color:#F7F5F0;letter-spacing:.04em}
  .side-cta p{font-size:14px;line-height:1.75;color:rgba(247,245,240,.72);margin-bottom:18px}
  .side-cta .btn{width:100%}

  /* ---------- 上下篇 ---------- */
  .pn-section{padding:0 0 64px}
  .pn-grid{display:grid;grid-template-columns:1fr;gap:16px}
  @media (min-width:768px){.pn-grid{grid-template-columns:1fr 1fr}}
  .pn-card{
    display:flex;flex-direction:column;gap:8px;
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
    padding:22px;box-shadow:var(--shadow-1);
    transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
  }
  .pn-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(255,106,42,.45)}
  .pn-label{font-size:12.5px;font-weight:700;letter-spacing:.12em;color:var(--muted)}
  .pn-title{font-size:17px;font-weight:700;color:var(--ink);line-height:1.5}
  .pn-card:hover .pn-title{color:var(--accent)}

  /* ---------- 相关推荐 ---------- */
  .related{padding:8px 0 72px}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
  .section-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:800;color:var(--ink)}
  .section-head p{font-size:14.5px;color:var(--muted);margin-top:8px;max-width:560px}
  .related-grid{display:grid;grid-template-columns:1fr;gap:20px}
  @media (min-width:640px){.related-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.related-grid{grid-template-columns:repeat(3,1fr)}}
  .card{
    display:flex;flex-direction:column;
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
    overflow:hidden;box-shadow:var(--shadow-1);
    transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
  }
  .card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(255,106,42,.45)}
  .card-media{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--bg-2)}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease)}
  .card:hover .card-media img{transform:scale(1.03)}
  .badge{
    position:absolute;left:14px;top:14px;
    padding:5px 11px;border-radius:var(--radius-pill);
    background:rgba(14,15,17,.82);color:#F7F5F0;
    font-size:12px;font-weight:700;letter-spacing:.04em;
    backdrop-filter:blur(6px);
  }
  .card-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
  .card-body h3{font-size:18px;font-weight:700;color:var(--ink);line-height:1.5}
  .card:hover .card-body h3{color:var(--accent)}
  .card-body p{font-size:14.5px;color:var(--muted);line-height:1.75}
  .card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--muted)}
  .card-meta .arrow{transition:transform 180ms var(--ease)}
  .card:hover .card-meta .arrow{transform:translateX(4px);color:var(--accent)}

  /* ---------- CTA ---------- */
  .cta-band{
    position:relative;
    background:var(--ink);
    border-radius:var(--radius-lg);
    padding:44px 32px;
    overflow:hidden;
    color:#F7F5F0;
  }
  .cta-band::before{
    content:"";position:absolute;inset:0;
    background-image:linear-gradient(120deg,rgba(14,15,17,.94) 0%,rgba(14,15,17,.78) 60%,rgba(14,15,17,.55) 100%),url('/assets/images/backpic/back-2.png');
    background-size:cover;background-position:center;
    opacity:.9;
  }
  .cta-inner{position:relative;display:flex;flex-direction:column;gap:24px}
  @media (min-width:900px){
    .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;gap:40px}
  }
  .cta-inner h2{font-size:clamp(1.5rem,2.8vw,2.2rem);font-weight:800;line-height:1.25;margin-bottom:12px;color:#F7F5F0}
  .cta-inner p{font-size:15px;line-height:1.8;color:rgba(247,245,240,.76);max-width:600px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink);color:#F7F5F0;padding:64px 0 28px;margin-top:24px}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
  @media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:48px}}
  .footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
  .footer-brand .brand-mark{background:#F7F5F0;color:var(--ink)}
  .footer-brand .brand-line{color:#F7F5F0}
  .footer-brand .brand-line-2{color:rgba(247,245,240,.6)}
  .footer-desc{font-size:14px;line-height:1.85;color:rgba(247,245,240,.68);max-width:380px}
  .footer-col h4{font-size:14px;font-weight:800;letter-spacing:.08em;color:#F7F5F0;margin-bottom:16px}
  .footer-link{display:block;font-size:14px;color:rgba(247,245,240,.68);padding:6px 0;transition:color 180ms var(--ease),transform 180ms var(--ease)}
  .footer-link:hover{color:var(--accent);transform:translateX(3px)}
  .footer-note{font-size:13.5px;line-height:1.85;color:rgba(247,245,240,.62);margin-bottom:10px}
  .footer-bottom{
    margin-top:44px;padding-top:22px;
    border-top:1px solid rgba(247,245,240,.14);
    display:flex;flex-direction:column;gap:10px;
    font-size:13px;color:rgba(247,245,240,.55);
  }
  @media (min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}

  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
    .card:hover,.pn-card:hover{transform:none}
  }

/* roulang page: category1 */
:root{
    --bg:#F7F5F0;
    --bg-2:#EFEBE3;
    --ink:#0E0F11;
    --ink-2:#2A2D31;
    --muted:#6B6F76;
    --line:rgba(14,15,17,.10);
    --accent:#FF6A2A;
    --accent-2:#5BC8B8;
    --success:#1F8A5B;
    --warning:#D98E04;
    --danger:#D64545;
    --radius-sm:10px;
    --radius-md:16px;
    --radius-lg:24px;
    --radius-pill:999px;
    --shadow-1:0 1px 2px rgba(14,15,17,.04), 0 12px 32px rgba(14,15,17,.06);
    --shadow-2:0 18px 48px rgba(14,15,17,.10);
    --ease:cubic-bezier(.2,.8,.2,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:"MiSans","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.8;
    letter-spacing:.01em;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;cursor:pointer;}
  input{font-family:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4{margin:0;letter-spacing:-.01em;}
  p{margin:0;}

  ::selection{background:rgba(255,106,42,.22);}

  .container{
    width:100%;
    max-width:1360px;
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }
  @media (min-width:768px){ .container{padding-left:32px;padding-right:32px;} }
  @media (min-width:1024px){ .container{padding-left:40px;padding-right:40px;} }

  /* ===== 顶部导航 ===== */
  .site-header{
    background:rgba(247,245,240,.86);
    backdrop-filter:saturate(160%) blur(14px);
    -webkit-backdrop-filter:saturate(160%) blur(14px);
    border-bottom:1px solid transparent;
    transition:border-color .24s var(--ease), box-shadow .24s var(--ease), background .24s var(--ease);
  }
  .site-header.is-stuck{
    border-bottom-color:var(--line);
    box-shadow:0 8px 24px rgba(14,15,17,.06);
    background:rgba(247,245,240,.95);
  }
  .brand-lockup{display:flex;align-items:center;gap:10px;}
  .brand-mark{
    width:42px;height:42px;flex:0 0 42px;
    border-radius:13px;
    background:var(--ink);
    color:#F7F5F0;
    display:grid;place-items:center;
    font-weight:900;font-size:19px;
    position:relative;
    overflow:hidden;
    transition:transform .24s var(--ease);
  }
  .brand-mark::after{
    content:"";
    position:absolute;right:-6px;bottom:-6px;
    width:18px;height:18px;border-radius:50%;
    background:var(--accent);
    opacity:.9;
  }
  .brand-lockup:hover .brand-mark{transform:rotate(-4deg);}
  .brand-text{display:flex;flex-direction:column;line-height:1.08;}
  .brand-line{font-weight:800;font-size:15.5px;letter-spacing:-.01em;color:var(--ink);}
  .brand-line-2{font-size:11px;font-weight:700;letter-spacing:.10em;color:var(--muted);margin-top:2px;}

  .nav-pill{
    display:flex;align-items:center;gap:2px;
    background:rgba(255,255,255,.72);
    border:1px solid var(--line);
    border-radius:var(--radius-pill);
    padding:4px;
  }
  .pill{
    display:inline-flex;align-items:center;
    padding:8px 15px;
    border-radius:var(--radius-pill);
    font-size:14px;font-weight:600;
    color:var(--ink-2);
    white-space:nowrap;
    transition:background .2s var(--ease),color .2s var(--ease);
  }
  .pill:hover{background:var(--bg-2);color:var(--ink);}
  .pill.active{background:var(--ink);color:#F7F5F0;}
  .pill.active:hover{background:var(--ink);color:#F7F5F0;}

  .icon-btn{
    width:42px;height:42px;border-radius:12px;
    display:inline-flex;align-items:center;justify-content:center;
    border:1px solid var(--line);
    background:transparent;
    color:var(--ink-2);
    transition:background .2s var(--ease), transform .28s var(--ease), color .2s var(--ease);
  }
  .icon-btn:hover{background:var(--bg-2);transform:rotate(90deg);color:var(--ink);}
  .icon-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

  .menu-btn{
    width:46px;height:46px;border-radius:12px;
    border:1px solid var(--line);
    background:transparent;
    display:inline-flex;align-items:center;justify-content:center;
    color:var(--ink);font-size:18px;
    transition:background .2s var(--ease);
  }
  .menu-btn:hover{background:var(--bg-2);}

  /* ===== 按钮 ===== */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 22px;
    border:none;border-radius:12px;
    font-size:15px;font-weight:700;
    transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  }
  .btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
  .btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 26px rgba(255,106,42,.26);}
  .btn-primary:hover{background:#EA5A18;transform:translateY(-2px);box-shadow:0 16px 34px rgba(255,106,42,.30);}
  .btn-dark{background:var(--ink);color:#F7F5F0;}
  .btn-dark:hover{background:var(--accent);color:#fff;transform:translateY(-2px);}
  .btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line);}
  .btn-ghost:hover{border-color:var(--ink);transform:translateY(-2px);}
  .btn-light{background:#F7F5F0;color:var(--ink);}
  .btn-light:hover{background:var(--accent);color:#fff;transform:translateY(-2px);}
  .btn .fa-arrow-right{transition:transform .22s var(--ease);}
  .btn:hover .fa-arrow-right{transform:translateX(4px);}

  /* ===== 通用标签、徽章 ===== */
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12.5px;font-weight:700;letter-spacing:.14em;
    color:var(--accent);text-transform:uppercase;
  }
  .eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--accent);}
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:5px 11px;border-radius:var(--radius-pill);
    font-size:12.5px;font-weight:700;line-height:1.4;
  }
  .badge-soft{background:rgba(91,200,184,.16);color:#1F6B60;}
  .badge-accent{background:rgba(255,106,42,.14);color:#C24A15;}
  .badge-ink{background:rgba(14,15,17,.08);color:var(--ink-2);}

  .section-title{
    font-size:clamp(1.6rem,3vw,2.5rem);
    font-weight:800;line-height:1.2;
  }
  .section-sub{color:var(--muted);font-size:15.5px;line-height:1.85;max-width:62ch;}

  /* ===== 分类页头 banner ===== */
  .cat-hero{
    position:relative;
    padding-top:calc(72px + 56px);
    padding-bottom:64px;
    background-image:linear-gradient(180deg, rgba(247,245,240,.94) 0%, rgba(247,245,240,.86) 46%, rgba(247,245,240,.98) 100%), url('/assets/images/backpic/back-1.png');
    background-size:cover;
    background-position:center;
    border-bottom:1px solid var(--line);
    overflow:hidden;
  }
  .cat-hero::after{
    content:"";
    position:absolute;right:-120px;top:-120px;
    width:420px;height:420px;border-radius:50%;
    background:radial-gradient(circle, rgba(255,106,42,.16), rgba(255,106,42,0) 70%);
    pointer-events:none;
  }
  .cat-hero h1{
    font-size:clamp(2.05rem,5vw,3.6rem);
    font-weight:900;line-height:1.14;
    letter-spacing:-.015em;
  }
  .hero-figure{
    border-radius:var(--radius-lg);
    overflow:hidden;
    border:1px solid var(--line);
    box-shadow:var(--shadow-2);
    background:var(--bg-2);
  }
  .hero-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11;}

  .stat-card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-md);
    padding:18px 20px;
    transition:transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
  }
  .stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-1);border-color:rgba(255,106,42,.4);}
  .stat-num{font-family:"Inter","SF Pro Display","DIN Alternate",sans-serif;font-size:28px;font-weight:800;line-height:1.1;}
  .stat-label{font-size:13px;color:var(--muted);margin-top:6px;}

  /* ===== 时间线 ===== */
  .timeline{position:relative;margin-top:8px;}
  .timeline::before{
    content:"";position:absolute;left:23px;top:12px;bottom:12px;
    width:2px;background:linear-gradient(180deg, rgba(255,106,42,.55), rgba(14,15,17,.08));
  }
  .timeline-item{position:relative;display:flex;gap:20px;padding:18px 0;}
  .timeline-index{
    flex:0 0 48px;width:48px;height:48px;border-radius:50%;
    background:#fff;border:1px solid var(--line);
    display:grid;place-items:center;
    font-family:"Inter","SF Pro Display",sans-serif;
    font-weight:800;font-size:15px;color:var(--ink);
    position:relative;z-index:1;
    transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
  }
  .timeline-item:hover .timeline-index{background:var(--accent);color:#fff;border-color:var(--accent);transform:scale(1.06);}
  .timeline-body h3{font-size:18px;font-weight:700;margin-bottom:6px;}
  .timeline-body p{color:var(--muted);font-size:15px;}

  /* ===== 清单 ===== */
  .check-list{display:grid;gap:12px;}
  .check-item{
    display:flex;gap:12px;align-items:flex-start;
    background:#fff;border:1px solid var(--line);
    border-radius:var(--radius-md);
    padding:16px 18px;
    transition:border-color .22s var(--ease), transform .22s var(--ease), box-shadow .22s var(--ease);
  }
  .check-item:hover{border-color:rgba(91,200,184,.6);transform:translateY(-2px);box-shadow:var(--shadow-1);}
  .check-item i{color:var(--success);margin-top:5px;font-size:15px;}
  .check-item strong{display:block;font-size:15.5px;font-weight:700;margin-bottom:2px;}
  .check-item span{font-size:14px;color:var(--muted);line-height:1.75;}

  /* ===== 卡片 ===== */
  .scene-card{
    background:#fff;border:1px solid var(--line);
    border-radius:20px;overflow:hidden;
    display:flex;flex-direction:column;
    transition:transform .26s var(--ease), box-shadow .26s var(--ease), border-color .26s var(--ease);
  }
  .scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(255,106,42,.45);}
  .scene-media{position:relative;overflow:hidden;background:var(--bg-2);}
  .scene-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s var(--ease);}
  .scene-card:hover .scene-media img{transform:scale(1.04);}
  .scene-media .badge{position:absolute;left:14px;top:14px;background:rgba(247,245,240,.94);color:var(--ink);}
  .scene-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .scene-body h3{font-size:19px;font-weight:700;}
  .scene-body p{font-size:14.5px;color:var(--muted);line-height:1.8;flex:1;}
  .link-arrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:14px;font-weight:700;color:var(--ink);
    position:relative;
  }
  .link-arrow::after{
    content:"";position:absolute;left:0;bottom:-3px;height:2px;width:0;background:var(--accent);
    transition:width .26s var(--ease);
  }
  .link-arrow:hover::after{width:100%;}
  .link-arrow .fa-arrow-right{transition:transform .22s var(--ease);}
  .link-arrow:hover .fa-arrow-right{transform:translateX(4px);color:var(--accent);}

  /* ===== 提示条 ===== */
  .alert{
    display:flex;gap:14px;align-items:flex-start;
    border-radius:var(--radius-md);
    padding:16px 18px;
    border:1px solid var(--line);
    background:#fff;
    transition:transform .22s var(--ease);
  }
  .alert:hover{transform:translateY(-2px);}
  .alert i{font-size:17px;margin-top:4px;}
  .alert h4{font-size:15.5px;font-weight:700;margin-bottom:4px;}
  .alert p{font-size:14px;color:var(--muted);line-height:1.78;}
  .alert-warn{border-left:3px solid var(--warning);}
  .alert-warn i{color:var(--warning);}
  .alert-danger{border-left:3px solid var(--danger);}
  .alert-danger i{color:var(--danger);}
  .alert-ok{border-left:3px solid var(--success);}
  .alert-ok i{color:var(--success);}
  .alert-info{border-left:3px solid var(--accent-2);}
  .alert-info i{color:#2E8E80;}

  /* ===== FAQ ===== */
  .faq{border-top:1px solid var(--line);}
  .faq details{border-bottom:1px solid var(--line);}
  .faq summary{
    list-style:none;cursor:pointer;
    display:flex;align-items:center;justify-content:space-between;gap:20px;
    padding:22px 4px;
    font-size:17px;font-weight:700;line-height:1.6;
    transition:color .2s var(--ease);
  }
  .faq summary::-webkit-details-marker{display:none;}
  .faq summary:hover{color:var(--accent);}
  .faq summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}
  .faq summary .plus{
    flex:0 0 30px;width:30px;height:30px;border-radius:50%;
    border:1px solid var(--line);
    display:grid;place-items:center;
    font-size:14px;color:var(--ink-2);
    transition:transform .26s var(--ease), background .26s var(--ease), color .26s var(--ease), border-color .26s var(--ease);
  }
  .faq details[open] summary .plus{transform:rotate(45deg);background:var(--accent);color:#fff;border-color:var(--accent);}
  .faq-answer{padding:0 4px 24px;color:var(--muted);font-size:15px;line-height:1.85;max-width:76ch;}

  /* ===== CTA ===== */
  .cta-band{
    position:relative;
    background-color:var(--ink);
    background-image:linear-gradient(90deg, rgba(14,15,17,.94) 0%, rgba(14,15,17,.86) 55%, rgba(14,15,17,.78) 100%), url('/assets/images/backpic/back-2.png');
    background-size:cover;
    background-position:center;
    border-radius:var(--radius-lg);
    color:#F7F5F0;
    padding:44px 36px;
    overflow:hidden;
  }
  .cta-band h2{font-size:clamp(1.5rem,2.6vw,2.2rem);font-weight:800;line-height:1.22;}
  .cta-band p{color:rgba(247,245,240,.74);font-size:15px;line-height:1.8;max-width:60ch;}

  /* ===== 页脚 ===== */
  .site-footer{background:var(--ink);color:#F7F5F0;margin-top:0;}
  .site-footer .container{padding-top:64px;padding-bottom:28px;}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:36px;}
  @media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
  .footer-brand .brand-mark{background:#F7F5F0;color:var(--ink);}
  .footer-brand .brand-line{color:#F7F5F0;}
  .footer-brand .brand-line-2{color:rgba(247,245,240,.6);}
  .footer-desc{font-size:14px;line-height:1.85;color:rgba(247,245,240,.66);max-width:44ch;}
  .footer-col h4{font-size:13px;font-weight:700;letter-spacing:.12em;color:rgba(247,245,240,.5);margin-bottom:16px;}
  .footer-link{
    display:block;font-size:14.5px;color:rgba(247,245,240,.82);
    padding:6px 0;
    transition:color .2s var(--ease), transform .2s var(--ease);
  }
  .footer-link:hover{color:var(--accent);transform:translateX(3px);}
  .footer-note{font-size:13.5px;line-height:1.8;color:rgba(247,245,240,.6);margin-bottom:10px;}
  .footer-bottom{
    margin-top:44px;padding-top:22px;
    border-top:1px solid rgba(247,245,240,.12);
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-size:13px;color:rgba(247,245,240,.55);
  }

  /* ===== 表单 ===== */
  .field{
    width:100%;height:48px;
    border-radius:12px;border:1px solid var(--line);
    background:#fff;padding:0 16px;
    font-size:15px;color:var(--ink);
    transition:border-color .2s var(--ease), box-shadow .2s var(--ease);
  }
  .field::placeholder{color:#9BA0A6;}
  .field:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,106,42,.18);}
  .field-label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:8px;}

  /* ===== 移动抽屉 ===== */
  .drawer{
    position:fixed;inset:0;z-index:80;
    background:var(--bg);
    transform:translateX(100%);
    transition:transform .34s var(--ease);
    display:flex;flex-direction:column;
    padding:20px 20px 28px;
    overflow-y:auto;
  }
  .drawer.open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;}
  .drawer-link{
    display:flex;align-items:center;justify-content:space-between;
    font-size:21px;font-weight:700;
    padding:16px 4px;
    border-bottom:1px solid var(--line);
    color:var(--ink);
    transition:color .2s var(--ease);
  }
  .drawer-link:hover{color:var(--accent);}
  .drawer-link.active{color:var(--accent);}
  body.no-scroll{overflow:hidden;}

  @media (prefers-reduced-motion: reduce){
    *{animation:none !important;transition-duration:.001ms !important;}
    html{scroll-behavior:auto;}
    .scene-card:hover{transform:none;}
    .scene-card:hover .scene-media img{transform:none;}
  }

/* roulang page: category2 */
:root{
  --bg:#F7F5F0;
  --bg-2:#EFEBE3;
  --ink:#0E0F11;
  --ink-2:#2A2D31;
  --muted:#6B6F76;
  --line:rgba(14,15,17,.10);
  --accent:#FF6A2A;
  --accent-2:#5BC8B8;
  --success:#1F8A5B;
  --warning:#D98E04;
  --danger:#D64545;
  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:24px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(14,15,17,.04),0 12px 32px rgba(14,15,17,.06);
  --shadow-2:0 18px 48px rgba(14,15,17,.10);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"MiSans","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:1rem;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1280px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media(min-width:768px){.container{padding-left:32px;padding-right:32px;}}
@media(min-width:1024px){.container{padding-left:40px;padding-right:40px;max-width:1340px;}}
.num{font-family:"Inter","SF Pro Display","DIN Alternate",sans-serif;font-variant-numeric:tabular-nums;}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(255,255,255,.90);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow 240ms var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 28px rgba(14,15,17,.07);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;height:74px;}
.brand{display:flex;align-items:center;gap:.7rem;flex:none;}
.brand-mark{
  width:42px;height:42px;border-radius:14px;flex:none;
  background:var(--ink);color:#F7F5F0;
  display:grid;place-items:center;font-weight:900;font-size:1.2rem;
  letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.12;}
.brand-line{font-weight:800;font-size:1rem;letter-spacing:-.01em;white-space:nowrap;}
.brand-line-2{font-size:.78rem;font-weight:600;color:var(--muted);letter-spacing:.02em;white-space:nowrap;}
.nav-pill{display:flex;align-items:center;gap:.25rem;padding:.25rem;border-radius:var(--radius-pill);background:transparent;}
.pill{
  display:inline-flex;align-items:center;height:38px;padding:0 1rem;
  border-radius:var(--radius-pill);font-size:.9rem;font-weight:600;color:var(--ink-2);
  transition:background 180ms var(--ease),color 180ms var(--ease);
  white-space:nowrap;
}
.pill:hover{background:var(--bg-2);color:var(--ink);}
.pill.active{background:var(--ink);color:#F7F5F0;}
.header-actions{display:flex;align-items:center;gap:.5rem;flex:none;}
.icon-btn{
  width:42px;height:42px;border-radius:14px;border:1px solid transparent;background:transparent;
  color:var(--ink-2);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;font-size:1rem;transition:background 180ms var(--ease),transform 240ms var(--ease),color 180ms var(--ease);
}
.icon-btn:hover{background:var(--bg-2);color:var(--ink);}
.icon-btn.search-btn:hover i{transform:rotate(90deg);}
.icon-btn i{transition:transform 240ms var(--ease);}
.header-cta{height:42px;font-size:.875rem;padding:0 1.15rem;}
.menu-btn{display:none;}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  height:48px;padding:0 1.5rem;border-radius:var(--radius-pill);
  font-size:.94rem;font-weight:700;border:1px solid transparent;cursor:pointer;
  transition:background 200ms var(--ease),color 200ms var(--ease),transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
  text-align:center;
}
.btn-dark{background:var(--ink);color:#F7F5F0;}
.btn-dark:hover{background:var(--accent);color:#fff;transform:translateY(-2px);box-shadow:0 14px 34px rgba(255,106,42,.30);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:#FF5A14;transform:translateY(-2px);box-shadow:0 14px 34px rgba(255,106,42,.34);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--ink);background:var(--bg-2);transform:translateY(-2px);}
.btn-ghost-light{background:transparent;color:#F7F5F0;border-color:rgba(247,245,240,.34);}
.btn-ghost-light:hover{background:rgba(247,245,240,.12);border-color:rgba(247,245,240,.7);transform:translateY(-2px);}
.btn-sm{height:42px;padding:0 1.15rem;font-size:.875rem;}

/* ============ hero ============ */
.hero-cat{
  position:relative;
  background-image:linear-gradient(180deg,rgba(247,245,240,.93) 0%,rgba(247,245,240,.82) 55%,rgba(247,245,240,.96) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  padding:56px 0 48px;
}
@media(min-width:1024px){.hero-cat{padding:88px 0 72px;}}
.eyebrow{
  display:inline-flex;align-items:center;gap:.5rem;
  font-size:.8rem;font-weight:800;letter-spacing:.06em;color:var(--accent);
  background:rgba(255,106,42,.10);border:1px solid rgba(255,106,42,.22);
  padding:.35rem .85rem;border-radius:var(--radius-pill);
}
.hero-title{
  font-size:clamp(2.05rem,4.6vw,3.5rem);
  font-weight:900;line-height:1.12;letter-spacing:-.015em;margin:1.15rem 0 0;
}
.hero-title .hl{color:var(--accent);}
.hero-sub{margin-top:1.25rem;font-size:1.03rem;line-height:1.9;color:var(--ink-2);max-width:60ch;}
.hero-actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.9rem;}
.hero-points{display:flex;flex-wrap:wrap;gap:1.25rem;margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--line);}
.hero-point{display:flex;align-items:center;gap:.5rem;font-size:.86rem;color:var(--ink-2);font-weight:600;}
.hero-point i{color:var(--accent-2);}

.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-2);overflow:hidden;}
.panel-media{aspect-ratio:16/9;overflow:hidden;background:var(--bg-2);}
.panel-media img{width:100%;height:100%;object-fit:cover;}
.panel-body{padding:1.25rem 1.35rem 1.35rem;}
.panel-title{font-size:.82rem;font-weight:800;letter-spacing:.08em;color:var(--muted);}
.status-row{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.7rem 0;border-bottom:1px dashed var(--line);font-size:.9rem;}
.status-row:last-of-type{border-bottom:none;}
.status-name{font-weight:600;color:var(--ink-2);}
.status-tag{display:inline-flex;align-items:center;gap:.4rem;font-size:.8rem;font-weight:700;color:var(--success);}
.dot{width:7px;height:7px;border-radius:50%;background:var(--success);display:inline-block;}
.panel-foot{margin-top:.85rem;font-size:.78rem;color:var(--muted);line-height:1.7;}

/* ============ trust bar ============ */
.trust-bar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff;}
.trust-inner{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem 1.75rem;padding:18px 0;}
.trust-item{display:inline-flex;align-items:center;gap:.5rem;font-size:.86rem;font-weight:600;color:var(--ink-2);}
.trust-item i{color:var(--accent);}
.trust-sep{width:1px;height:16px;background:var(--line);display:none;}
@media(min-width:768px){.trust-sep{display:inline-block;}}

/* ============ sections ============ */
.section{padding:56px 0;}
@media(min-width:768px){.section{padding:80px 0;}}
@media(min-width:1024px){.section{padding:100px 0;}}
.section-sand{background:var(--bg-2);}
.section-head{max-width:720px;}
.section-title{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:800;line-height:1.2;letter-spacing:-.012em;margin:.75rem 0 0;}
.section-desc{margin-top:1rem;color:var(--muted);font-size:1rem;line-height:1.85;}

/* ============ cards ============ */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-1);height:100%;
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),border-color 240ms var(--ease);
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(255,106,42,.45);}
.card-media{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--bg-2);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 300ms var(--ease);}
.card:hover .card-media img{transform:scale(1.03);}
.badge{
  position:absolute;top:12px;left:12px;z-index:2;
  display:inline-flex;align-items:center;gap:.35rem;
  padding:.28rem .7rem;border-radius:var(--radius-pill);
  background:rgba(14,15,17,.82);color:#F7F5F0;font-size:.74rem;font-weight:700;letter-spacing:.02em;
}
.badge-accent{background:var(--accent);color:#fff;}
.badge-teal{background:var(--accent-2);color:#04231F;}
.card-body{padding:1.4rem 1.45rem 1.5rem;display:flex;flex-direction:column;gap:.7rem;flex:1;}
.card-title{font-size:1.22rem;font-weight:800;line-height:1.35;letter-spacing:-.01em;}
.card-title a{
  background-image:linear-gradient(currentColor,currentColor);
  background-size:0% 1px;background-position:0 100%;background-repeat:no-repeat;
  transition:background-size 240ms var(--ease);
}
.card:hover .card-title a{background-size:100% 1px;}
.card-text{color:var(--muted);font-size:.94rem;line-height:1.85;margin:0;}
.card-list{list-style:none;padding:0;margin:.2rem 0 0;display:grid;gap:.45rem;}
.card-list li{position:relative;padding-left:1.1rem;font-size:.87rem;color:var(--ink-2);line-height:1.7;}
.card-list li::before{content:"";position:absolute;left:0;top:.62em;width:5px;height:5px;border-radius:50%;background:var(--accent);}
.card-meta{margin-top:auto;padding-top:.85rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;font-size:.79rem;color:var(--muted);border-top:1px solid var(--line);}
.card-arrow{display:inline-flex;align-items:center;gap:.4rem;font-weight:700;color:var(--ink);font-size:.85rem;transition:color 200ms var(--ease);}
.card-arrow i{transition:transform 240ms var(--ease);}
.card:hover .card-arrow{color:var(--accent);}
.card:hover .card-arrow i{transform:translateX(4px);}

.card-wide{flex-direction:row;align-items:stretch;}
.card-wide .card-media{flex:0 0 300px;aspect-ratio:auto;min-height:176px;}
.card-wide .card-body{justify-content:center;}
@media(max-width:767px){
  .card-wide{flex-direction:column;}
  .card-wide .card-media{flex:none;aspect-ratio:16/10;min-height:180px;}
}

/* ============ dark strip ============ */
.check-strip{background:var(--ink);color:#F7F5F0;border-radius:var(--radius-lg);padding:2.25rem 1.75rem;overflow:hidden;position:relative;}
@media(min-width:768px){.check-strip{padding:2.75rem 2.5rem;}}
.check-grid{display:grid;gap:1.75rem;margin-top:2rem;}
@media(min-width:768px){.check-grid{grid-template-columns:repeat(3,1fr);gap:0;}}
.check-item{padding:0;border-top:1px solid rgba(247,245,240,.16);padding-top:1.5rem;}
@media(min-width:768px){
  .check-item{border-top:none;border-left:1px solid rgba(247,245,240,.16);padding:0 1.5rem;}
  .check-item:first-child{border-left:none;padding-left:0;}
  .check-item:last-child{padding-right:0;}
}
.check-num{font-size:.8rem;font-weight:800;letter-spacing:.1em;color:var(--accent);}
.check-title{font-size:1.1rem;font-weight:800;margin:.65rem 0 .55rem;}
.check-text{font-size:.9rem;line-height:1.85;color:rgba(247,245,240,.72);margin:0;}
.check-strip .strip-title{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:800;line-height:1.22;letter-spacing:-.012em;}
.check-strip .strip-sub{margin-top:.85rem;color:rgba(247,245,240,.68);font-size:.95rem;max-width:64ch;}

/* ============ scene cards ============ */
.scene{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:1.4rem 1.35rem;height:100%;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.scene:hover{transform:translateY(-2px);box-shadow:var(--shadow-1);border-color:rgba(91,200,184,.6);}
.scene-icon{
  width:44px;height:44px;border-radius:14px;background:var(--bg-2);color:var(--ink);
  display:grid;place-items:center;font-size:1.05rem;margin-bottom:.95rem;
}
.scene h3{font-size:1.03rem;font-weight:800;margin:0 0 .5rem;letter-spacing:-.005em;}
.scene p{margin:0;font-size:.89rem;color:var(--muted);line-height:1.8;}

/* ============ timeline ============ */
.timeline{display:grid;gap:1rem;margin-top:2.25rem;}
.step{
  display:grid;grid-template-columns:60px 1fr;gap:1.25rem;align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:1.4rem 1.5rem;transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease),transform 220ms var(--ease);
}
.step:hover{border-color:rgba(255,106,42,.42);box-shadow:var(--shadow-1);transform:translateY(-2px);}
.step-num{
  width:60px;height:60px;border-radius:18px;background:var(--bg-2);
  display:grid;place-items:center;font-weight:900;font-size:1.15rem;color:var(--ink);
}
.step:hover .step-num{background:var(--accent);color:#fff;}
.step-num,.scene-icon{transition:background 220ms var(--ease),color 220ms var(--ease);}
.step h3{font-size:1.06rem;font-weight:800;margin:0 0 .4rem;}
.step p{margin:0;font-size:.92rem;color:var(--muted);line-height:1.85;}
@media(max-width:520px){
  .step{grid-template-columns:1fr;gap:.85rem;}
  .step-num{width:48px;height:48px;border-radius:14px;font-size:1rem;}
}

/* ============ faq ============ */
.faq-wrap{max-width:920px;margin-top:2rem;border-bottom:1px solid var(--line);}
.faq-item{border-top:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;
  gap:1.25rem;padding:1.3rem .25rem;font-size:1.05rem;font-weight:700;line-height:1.6;
  color:var(--ink);transition:color 200ms var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--accent);}
.faq-icon{
  flex:none;width:30px;height:30px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;font-size:.85rem;color:var(--ink-2);
  transition:transform 240ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease),background 200ms var(--ease);
}
.faq-item[open] .faq-icon{transform:rotate(45deg);color:#fff;background:var(--accent);border-color:var(--accent);}
.faq-body{padding:0 3rem 1.5rem .25rem;font-size:.95rem;line-height:1.9;color:var(--muted);}
@media(max-width:640px){.faq-body{padding-right:.5rem;}}

/* ============ cta band ============ */
.cta-band{
  position:relative;background-color:var(--ink);color:#F7F5F0;
  background-image:linear-gradient(90deg,rgba(14,15,17,.94) 0%,rgba(14,15,17,.82) 60%,rgba(14,15,17,.68) 100%),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  border-radius:var(--radius-lg);padding:2.5rem 1.75rem;overflow:hidden;
}
@media(min-width:768px){.cta-band{padding:3.25rem 3rem;}}
.cta-band h2{font-size:clamp(1.5rem,2.8vw,2.15rem);font-weight:800;line-height:1.24;letter-spacing:-.012em;margin:0;}
.cta-band p{margin:1rem 0 0;color:rgba(247,245,240,.72);max-width:60ch;font-size:.96rem;line-height:1.85;}
.cta-actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.75rem;}

/* ============ footer ============ */
.site-footer{background:var(--ink);color:#F7F5F0;padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.25fr;gap:2.5rem;}
@media(max-width:960px){.footer-grid{grid-template-columns:1fr 1fr;gap:2rem;}}
@media(max-width:560px){.footer-grid{grid-template-columns:1fr;}}
.footer-brand{display:flex;align-items:center;gap:.75rem;margin-bottom:1rem;}
.footer-brand .brand-mark{background:var(--accent);color:#fff;}
.site-footer .brand-line{color:#F7F5F0;}
.site-footer .brand-line-2{color:rgba(247,245,240,.68);}
.footer-desc{color:rgba(247,245,240,.62);font-size:.88rem;line-height:1.85;margin:0;max-width:36ch;}
.footer-col h4{font-size:.86rem;font-weight:800;letter-spacing:.05em;color:#F7F5F0;margin:0 0 1rem;}
.footer-link{display:block;color:rgba(247,245,240,.66);font-size:.875rem;padding:.34rem 0;transition:color 180ms var(--ease),transform 180ms var(--ease);}
.footer-link:hover{color:var(--accent);transform:translateX(3px);}
.footer-note{color:rgba(247,245,240,.6);font-size:.82rem;line-height:1.75;margin:0 0 .55rem;}
.footer-bottom{
  margin-top:3rem;padding-top:1.25rem;border-top:1px solid rgba(247,245,240,.13);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:.75rem;
  font-size:.8rem;color:rgba(247,245,240,.5);
}

/* ============ mobile drawer ============ */
.mask{
  position:fixed;inset:0;background:rgba(14,15,17,.38);z-index:80;
  opacity:0;visibility:hidden;transition:opacity 240ms var(--ease),visibility 240ms var(--ease);
}
.mask.open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(88vw,380px);z-index:90;
  background:var(--bg);transform:translateX(102%);
  transition:transform 280ms var(--ease);
  display:flex;flex-direction:column;padding:1.25rem 1.25rem 1.5rem;
  overflow-y:auto;box-shadow:-24px 0 60px rgba(14,15,17,.18);
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 .5rem;font-size:1.12rem;font-weight:700;color:var(--ink);
  border-bottom:1px solid var(--line);transition:color 180ms var(--ease),padding-left 200ms var(--ease);
}
.drawer-link:hover,.drawer-link.active{color:var(--accent);padding-left:.85rem;}
.drawer-cta{margin-top:1.75rem;}
body.no-scroll{overflow:hidden;}

@media(max-width:1023px){
  .nav-pill{display:none;}
  .menu-btn{display:inline-flex;}
  .header-cta{display:none;}
}
@media(min-width:1024px){
  .mobile-drawer,.mask{display:none;}
}

@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --bg:#F7F5F0;
  --bg-2:#EFEBE3;
  --ink:#0E0F11;
  --ink-2:#2A2D31;
  --muted:#6B6F76;
  --line:rgba(14,15,17,.10);
  --accent:#FF6A2A;
  --accent-2:#5BC8B8;
  --success:#1F8A5B;
  --warning:#D98E04;
  --danger:#D64545;
  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:24px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(14,15,17,.04),0 12px 32px rgba(14,15,17,.06);
  --shadow-2:0 18px 48px rgba(14,15,17,.10);
  --ease:cubic-bezier(.2,.8,.2,1);
  --font-cn:"MiSans","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Inter","SF Pro Display","DIN Alternate",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  background:var(--bg);
  color:var(--ink);
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.lock{overflow:hidden}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font-family:inherit}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
  border-radius:6px;
}
.container{width:100%;max-width:1320px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}
@media(min-width:1024px){.container{padding:0 40px}}
.section{padding:56px 0}
@media(min-width:768px){.section{padding:72px 0}}
@media(min-width:1024px){.section{padding:96px 0}}
.section-tight{padding:40px 0}
@media(min-width:1024px){.section-tight{padding:56px 0}}
.bg-sand{background:var(--bg-2)}

/* ============ 排版 ============ */
.h1{
  font-size:clamp(2.1rem,5.2vw,3.6rem);
  font-weight:900;
  line-height:1.12;
  letter-spacing:-.01em;
}
.h2{
  font-size:clamp(1.55rem,3vw,2.4rem);
  font-weight:800;
  line-height:1.2;
  letter-spacing:-.01em;
}
.h3{font-size:1.2rem;font-weight:700;line-height:1.45}
.lead{font-size:clamp(1rem,1.4vw,1.12rem);color:var(--ink-2);line-height:1.9}
.muted{color:var(--muted)}
.small{font-size:.875rem;line-height:1.7}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.78rem;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent);
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);display:block}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,240,.9);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.site-header.is-stuck{border-bottom-color:var(--line);box-shadow:0 8px 24px rgba(14,15,17,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:74px}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand-mark{
  width:40px;height:40px;border-radius:13px;background:var(--ink);color:#F7F5F0;
  display:grid;place-items:center;font-size:19px;font-weight:900;flex:none;
  font-family:var(--font-cn);
}
.brand-text{display:flex;flex-direction:column;line-height:1.06}
.brand-line{font-size:15px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.brand-line-2{font-size:11.5px;font-weight:700;color:var(--muted);letter-spacing:.08em;white-space:nowrap}
.nav-pill{
  display:none;align-items:center;gap:2px;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-pill);padding:5px;
}
@media(min-width:1024px){.nav-pill{display:inline-flex}}
.pill{
  padding:9px 15px;border-radius:var(--radius-pill);
  font-size:14px;font-weight:600;color:var(--ink-2);white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.pill:hover{background:var(--bg-2);color:var(--ink)}
.pill.active{background:var(--ink);color:#fff}
.header-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:42px;height:42px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:#fff;color:var(--ink-2);
  display:grid;place-items:center;
  transition:background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease);
}
.icon-btn:hover{background:var(--bg-2);color:var(--ink);transform:rotate(90deg)}
.header-cta{display:none}
@media(min-width:1024px){.header-cta{display:inline-flex}}
.menu-btn{display:grid}
@media(min-width:1024px){.menu-btn{display:none}}
.menu-btn span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;margin:3px auto}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-pill);
  font-size:14px;font-weight:700;border:1px solid transparent;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease);
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:var(--accent);color:#fff;box-shadow:0 12px 28px rgba(255,106,42,.28)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#E85A1C;box-shadow:0 12px 28px rgba(255,106,42,.3)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--ink);box-shadow:var(--shadow-1)}
.btn-ghost{background:transparent;border-color:rgba(247,245,240,.38);color:#F7F5F0}
.btn-ghost:hover{background:rgba(247,245,240,.12);border-color:#F7F5F0}
.btn-lg{padding:15px 30px;font-size:15px}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--ink);transition:color .2s var(--ease)}
.arrow-link svg{transition:transform .24s var(--ease)}
.arrow-link:hover{color:var(--accent)}
.arrow-link:hover svg{transform:translateX(4px)}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,15,17,.45);
  opacity:0;pointer-events:none;transition:opacity .28s var(--ease);z-index:70;
}
.drawer-mask.open{opacity:1;pointer-events:auto}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(88vw,392px);
  background:var(--bg);border-left:1px solid var(--line);
  transform:translateX(105%);transition:transform .34s var(--ease);
  z-index:80;display:flex;flex-direction:column;
  padding:20px 22px 26px;overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-link{
  display:block;font-size:21px;font-weight:700;padding:15px 0;
  border-bottom:1px solid var(--line);transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.drawer-link:hover{color:var(--accent);padding-left:6px}
.drawer-link.active{color:var(--accent)}
.drawer-foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px}
.drawer-foot .btn{width:100%;min-height:48px}

/* ============ Hero ============ */
.hero{position:relative;background:var(--ink);color:#F7F5F0;overflow:hidden}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.32;
}
.hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(102deg,rgba(14,15,17,.95) 0%,rgba(14,15,17,.82) 45%,rgba(14,15,17,.48) 100%);
}
.hero-inner{position:relative;padding:56px 0 60px}
@media(min-width:1024px){.hero-inner{padding:82px 0 88px}}
.hero h1{color:#F7F5F0}
.hero-sub{margin-top:20px;max-width:620px;color:rgba(247,245,240,.82);font-size:1rem;line-height:1.9}
.hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:12px}
.hero-tags{margin-top:30px;display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:var(--radius-pill);
  border:1px solid rgba(247,245,240,.22);color:rgba(247,245,240,.86);
  font-size:13px;font-weight:600;background:rgba(247,245,240,.05);
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(247,245,240,.6);margin-bottom:22px}
.crumb a:hover{color:#fff}
.crumb span.sep{opacity:.5}

/* ============ 网格 & 卡片 ============ */
.grid{display:grid;gap:22px}
.grid-2{display:grid;gap:22px;grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{display:grid;gap:22px;grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-12{display:grid;gap:22px;grid-template-columns:repeat(12,minmax(0,1fr))}
.col-7{grid-column:span 7}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-12{grid-column:span 12}
@media(max-width:1023px){
  .grid-12{grid-template-columns:1fr}
  .col-7,.col-5,.col-6,.col-12{grid-column:span 1}
  .grid-3{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .grid-2,.grid-3{grid-template-columns:1fr}
}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  overflow:hidden;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(255,106,42,.45)}
.card-pad{padding:24px}
@media(min-width:1024px){.card-pad{padding:28px}}
.card-media{position:relative;overflow:hidden;background:var(--bg-2)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 11px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:700;letter-spacing:.02em;
  background:rgba(255,106,42,.12);color:#C1440E;
}
.badge-teal{background:rgba(91,200,184,.18);color:#166E60}
.badge-ink{background:var(--ink);color:#F7F5F0}
.badge-soft{background:var(--bg-2);color:var(--ink-2)}
.feature-list{display:flex;flex-direction:column;gap:12px;margin-top:18px}
.feature-list li{display:flex;gap:11px;align-items:flex-start;font-size:.95rem;color:var(--ink-2);line-height:1.75}
.tick{
  flex:none;width:20px;height:20px;border-radius:50%;margin-top:5px;
  background:rgba(31,138,91,.12);color:var(--success);
  display:grid;place-items:center;font-size:11px;font-weight:800;
}
.spec-num{font-family:var(--font-num);font-weight:800;font-size:1.5rem;letter-spacing:-.01em}
.spec-label{font-size:.8rem;color:var(--muted);font-weight:600;letter-spacing:.04em}
.spec-row{display:flex;flex-wrap:wrap;gap:14px 40px;margin-top:22px;padding-top:22px;border-top:1px solid var(--line)}

/* ============ 版本列表 ============ */
.version-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}
.version-head{
  display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:baseline;
  padding:24px 24px 20px;
}
.version-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 24px;
  padding:20px 24px;border-top:1px solid var(--line);
  transition:background .2s var(--ease);
}
.version-row:hover{background:var(--bg-2)}
.version-main{flex:1 1 260px;min-width:0}
.version-title{font-size:1.02rem;font-weight:700;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.version-desc{font-size:.86rem;color:var(--muted);margin-top:6px;line-height:1.7}
.version-meta{flex:0 0 auto;font-size:.82rem;color:var(--muted);font-family:var(--font-num);letter-spacing:.01em}
.version-size{font-family:var(--font-num);font-weight:700;color:var(--ink-2);font-size:.86rem}
.version-row .btn{padding:9px 18px;font-size:13px}

/* ============ 步骤时间线 ============ */
.step-list{display:grid;gap:0;margin-top:10px}
.step-item{
  position:relative;display:flex;gap:20px;padding:22px 0 26px;
  border-top:1px solid var(--line);
}
.step-item:first-child{border-top:0}
.step-num{
  flex:none;width:46px;height:46px;border-radius:14px;
  background:var(--ink);color:#F7F5F0;
  display:grid;place-items:center;
  font-family:var(--font-num);font-weight:800;font-size:15px;
  transition:background .24s var(--ease);
}
.step-item:hover .step-num{background:var(--accent)}
.step-body h3{font-size:1.08rem;font-weight:800;line-height:1.4}
.step-body p{margin-top:8px;font-size:.94rem;color:var(--ink-2);line-height:1.8}

/* ============ 保障条 ============ */
.guard-bar{
  background:var(--ink);color:#F7F5F0;border-radius:var(--radius-lg);
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  overflow:hidden;
}
.guard-item{
  padding:26px 24px;
  border-right:1px solid rgba(247,245,240,.14);
  transition:background .24s var(--ease);
}
.guard-item:last-child{border-right:0}
.guard-item:hover{background:rgba(247,245,240,.06)}
.guard-item h3{font-size:1rem;font-weight:800;margin-top:14px;color:#F7F5F0}
.guard-item p{margin-top:8px;font-size:.85rem;color:rgba(247,245,240,.66);line-height:1.75}
.guard-icon{
  width:38px;height:38px;border-radius:11px;
  background:rgba(255,106,42,.18);color:#FF8A5C;
  display:grid;place-items:center;font-size:15px;font-weight:800;
}
@media(max-width:1023px){
  .guard-bar{grid-template-columns:1fr 1fr}
  .guard-item:nth-child(2n){border-right:0}
  .guard-item:nth-child(n+3){border-top:1px solid rgba(247,245,240,.14)}
}
@media(max-width:560px){
  .guard-bar{grid-template-columns:1fr}
  .guard-item{border-right:0;border-top:1px solid rgba(247,245,240,.14)}
  .guard-item:first-child{border-top:0}
}

/* ============ FAQ ============ */
.faq-wrap{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 4px;font-size:1.02rem;font-weight:700;cursor:pointer;
  list-style:none;transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--accent)}
.faq-icon{
  flex:none;width:28px;height:28px;border-radius:50%;
  border:1px solid var(--line);color:var(--ink-2);
  display:grid;place-items:center;font-size:15px;font-weight:700;line-height:1;
  transition:transform .26s var(--ease),color .26s var(--ease),border-color .26s var(--ease);
}
.faq-item[open] .faq-icon{transform:rotate(45deg);color:var(--accent);border-color:var(--accent)}
.faq-answer{padding:0 4px 24px;max-width:880px;font-size:.95rem;color:var(--ink-2);line-height:1.85}

/* ============ CTA ============ */
.cta-panel{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:var(--ink);color:#F7F5F0;
  padding:40px 26px;
}
@media(min-width:768px){.cta-panel{padding:52px 44px}}
.cta-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  opacity:.2;
}
.cta-mask{
  position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(14,15,17,.96) 0%,rgba(14,15,17,.72) 58%,rgba(14,15,17,.5) 100%);
}
.cta-content{
  position:relative;display:flex;flex-wrap:wrap;gap:26px;
  align-items:center;justify-content:space-between;
}
.cta-text{flex:1 1 360px;min-width:0}
.cta-text h2{color:#F7F5F0}
.cta-text p{margin-top:14px;color:rgba(247,245,240,.78);font-size:.96rem;line-height:1.85;max-width:600px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#F7F5F0;padding:56px 0 26px;margin-top:0}
.footer-grid{
  display:grid;gap:34px;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
}
@media(max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.footer-grid{grid-template-columns:1fr;gap:28px}}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .brand-mark{background:#F7F5F0;color:var(--ink)}
.footer-brand .brand-line{color:#F7F5F0}
.footer-brand .brand-line-2{color:rgba(247,245,240,.6)}
.footer-desc{font-size:.88rem;color:rgba(247,245,240,.66);line-height:1.85;max-width:340px}
.footer-col h4{font-size:.95rem;font-weight:800;margin-bottom:16px;color:#F7F5F0;letter-spacing:.02em}
.footer-link{
  display:block;font-size:.88rem;color:rgba(247,245,240,.68);
  padding:5px 0;transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-link:hover{color:#FF8A5C;transform:translateX(3px)}
.footer-note{font-size:.84rem;color:rgba(247,245,240,.6);line-height:1.8;margin-bottom:10px}
.footer-bottom{
  margin-top:40px;padding-top:22px;
  border-top:1px solid rgba(247,245,240,.14);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:.8rem;color:rgba(247,245,240,.52);
}

@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .card:hover{transform:none}
  .card:hover .card-media img{transform:none}
}

/* roulang page: category4 */
:root{
  --bg:#F7F5F0;
  --bg-2:#EFEBE3;
  --ink:#0E0F11;
  --ink-2:#2A2D31;
  --muted:#6B6F76;
  --line:rgba(14,15,17,.10);
  --accent:#FF6A2A;
  --accent-soft:#FF8A5C;
  --accent-2:#5BC8B8;
  --success:#1F8A5B;
  --warning:#D98E04;
  --danger:#D64545;
  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:24px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(14,15,17,.04),0 12px 32px rgba(14,15,17,.06);
  --shadow-2:0 18px 48px rgba(14,15,17,.10);
  --ease:cubic-bezier(.2,.8,.2,1);
  --font-cn:"MiSans","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Inter","SF Pro Display","DIN Alternate",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:1rem;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em}
p{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
  border-radius:6px;
}
.container{width:100%;max-width:1280px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.container{padding-left:32px;padding-right:32px}}
@media(min-width:1280px){.container{max-width:1360px;padding-left:40px;padding-right:40px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,240,.9);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease),background .24s var(--ease);
}
.site-header.is-stuck{box-shadow:0 8px 28px rgba(14,15,17,.07);background:rgba(247,245,240,.96)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:74px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;flex:0 0 auto;border-radius:12px;
  background:var(--ink);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:18px;letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-line{font-size:15px;font-weight:800;letter-spacing:.02em}
.brand-line-2{font-size:12px;font-weight:600;color:var(--muted);letter-spacing:.08em}
.nav-pill{display:flex;align-items:center;gap:2px;padding:5px;border-radius:var(--radius-pill);border:1px solid var(--line);background:#fff}
.pill{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;
  border-radius:var(--radius-pill);font-size:14px;font-weight:600;color:var(--ink-2);
  transition:background .2s var(--ease),color .2s var(--ease);white-space:nowrap;
}
.pill:hover{background:var(--bg-2);color:var(--ink)}
.pill.active{background:var(--ink);color:#fff}
.header-right{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:#fff;
  display:flex;align-items:center;justify-content:center;color:var(--ink-2);
  transition:background .2s var(--ease),transform .24s var(--ease),color .2s var(--ease);
}
.icon-btn:hover{background:var(--bg-2);transform:rotate(90deg);color:var(--ink)}
.hamburger{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;
  display:none;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}
@media(max-width:1023px){
  .nav-pill,.header-cta{display:none}
  .hamburger{display:flex}
  .icon-btn{display:none}
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,15,17,.45);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;height:100%;width:min(88vw,380px);z-index:80;
  background:var(--bg);border-left:1px solid var(--line);
  transform:translateX(103%);transition:transform .3s var(--ease);
  display:flex;flex-direction:column;padding:22px 20px 26px;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;font-size:18px;color:var(--ink)}
.drawer-links{margin-top:18px;display:flex;flex-direction:column;gap:4px;flex:1}
.drawer-links a{
  display:flex;align-items:center;height:52px;padding:0 14px;border-radius:14px;
  font-size:20px;font-weight:700;color:var(--ink-2);
}
.drawer-links a:hover,.drawer-links a.active{background:#fff;color:var(--ink);box-shadow:var(--shadow-1)}
.drawer-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line)}
body.no-scroll{overflow:hidden}
@media(min-width:1024px){.mobile-drawer,.drawer-mask{display:none}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:14px;border:1px solid transparent;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--accent);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--bg-2);transform:translateY(-2px)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--ink);color:#fff;transform:translateY(-2px)}
.btn-sm{height:42px;padding:0 18px;font-size:14px;border-radius:12px}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--ink);color:#F7F5F0}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.3;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(14,15,17,.94) 8%,rgba(14,15,17,.76) 52%,rgba(14,15,17,.5) 100%);
}
.hero-inner{position:relative;z-index:2;padding:54px 0 62px;display:grid;gap:32px;grid-template-columns:1fr}
@media(min-width:1024px){.hero-inner{grid-template-columns:6.5fr 5.5fr;gap:48px;padding:76px 0 84px;align-items:center}}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(247,245,240,.66);margin-bottom:20px}
.crumb a:hover{color:var(--accent-soft)}
.crumb span{opacity:.5}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;margin-bottom:20px;
  border-radius:var(--radius-pill);border:1px solid rgba(247,245,240,.24);
  font-size:13px;font-weight:600;color:var(--accent-soft);letter-spacing:.04em;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block}
.page-hero h1{
  color:#F7F5F0;font-weight:900;font-size:clamp(2.1rem,5.2vw,3.7rem);
  line-height:1.12;letter-spacing:-.01em;margin-bottom:18px;
}
.page-hero h1 em{font-style:normal;color:var(--accent-soft)}
.hero-sub{color:rgba(247,245,240,.78);font-size:1.02rem;line-height:1.85;max-width:42em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-stats{display:flex;flex-wrap:wrap;gap:26px;margin-top:34px;padding-top:24px;border-top:1px solid rgba(247,245,240,.16)}
.hero-stat b{display:block;font-family:var(--font-num);font-size:1.6rem;font-weight:800;color:#fff;line-height:1.2}
.hero-stat span{font-size:13px;color:rgba(247,245,240,.62)}
.hero-panel{
  background:rgba(247,245,240,.06);border:1px solid rgba(247,245,240,.18);
  border-radius:var(--radius-lg);padding:22px;backdrop-filter:blur(4px);
}
.hero-panel h2{font-size:1rem;color:#fff;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.hero-panel h2 i{width:8px;height:8px;border-radius:2px;background:var(--accent-2);display:block}
.hero-list li{
  display:flex;gap:12px;padding:12px 0;border-top:1px dashed rgba(247,245,240,.16);
  font-size:14px;color:rgba(247,245,240,.82);line-height:1.7;
}
.hero-list li:first-child{border-top:none}
.hero-list b{color:#fff;font-family:var(--font-num);font-weight:700;flex:0 0 auto;min-width:22px}
.hero-note{margin-top:16px;font-size:12.5px;color:rgba(247,245,240,.55);line-height:1.7}

/* ---------- sections ---------- */
.section{padding:56px 0}
@media(min-width:768px){.section{padding:76px 0}}
@media(min-width:1024px){.section{padding:100px 0}}
.section-sand{background:var(--bg-2)}
.section-ink{background:var(--ink);color:#F7F5F0}
.section-head{max-width:760px;margin-bottom:34px}
.kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  color:var(--accent);letter-spacing:.14em;text-transform:uppercase;margin-bottom:12px;
}
.kicker::before{content:"";width:22px;height:2px;background:var(--accent);display:block}
.section-title{font-size:clamp(1.55rem,3vw,2.4rem);font-weight:800;line-height:1.2}
.section-desc{margin-top:14px;color:var(--muted);font-size:1rem;line-height:1.85}
.section-ink .section-title{color:#fff}
.section-ink .section-desc{color:rgba(247,245,240,.7)}

/* ---------- alert strip ---------- */
.alert-strip{
  display:flex;gap:16px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--warning);
  border-radius:var(--radius-md);padding:20px 22px;box-shadow:var(--shadow-1);
}
.alert-icon{
  flex:0 0 auto;width:38px;height:38px;border-radius:12px;background:rgba(217,142,4,.12);
  color:var(--warning);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;
}
.alert-strip h3{font-size:1.05rem;font-weight:800;margin-bottom:6px}
.alert-strip p{color:var(--muted);font-size:.95rem;line-height:1.8}

/* ---------- flow ---------- */
.flow{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:1024px){.flow{grid-template-columns:repeat(5,1fr);gap:18px}}
.flow-step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:22px 20px;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.flow-step:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(255,106,42,.5)}
.flow-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;background:var(--ink);color:#fff;
  font-family:var(--font-num);font-weight:800;font-size:14px;margin-bottom:14px;
}
.flow-step h3{font-size:1.02rem;font-weight:800;margin-bottom:8px}
.flow-step p{font-size:14px;color:var(--muted);line-height:1.8}
.flow-step::after{
  content:"";position:absolute;top:39px;right:-14px;width:12px;height:2px;background:var(--line);
}
@media(max-width:1023px){.flow-step::after{display:none}}
.flow-step:last-child::after{display:none}

/* ---------- cards ---------- */
.card-grid{display:grid;gap:22px;grid-template-columns:1fr}
@media(min-width:768px){.card-grid{grid-template-columns:repeat(3,1fr)}}
.media-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.media-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(255,106,42,.5)}
.media-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-2)}
.media-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.media-card:hover .media-thumb img{transform:scale(1.04)}
.badge{
  position:absolute;top:12px;left:12px;height:28px;padding:0 12px;border-radius:var(--radius-pill);
  background:rgba(14,15,17,.86);color:#fff;font-size:12px;font-weight:700;
  display:inline-flex;align-items:center;letter-spacing:.03em;
}
.badge-teal{background:rgba(91,200,184,.92);color:#0E0F11}
.media-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.media-body h3{font-size:1.12rem;font-weight:800;line-height:1.4}
.media-body p{font-size:14.5px;color:var(--muted);line-height:1.8}
.media-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:12px;border-top:1px solid var(--line)}
.media-foot span{font-size:12.5px;color:var(--muted);letter-spacing:.02em}
.arrow-link{font-size:13.5px;font-weight:700;color:var(--ink);display:inline-flex;align-items:center;gap:6px}
.arrow-link i{display:block;transition:transform .22s var(--ease);font-style:normal}
.media-card:hover .arrow-link{color:var(--accent)}
.media-card:hover .arrow-link i{transform:translateX(4px)}

/* ---------- checklist ---------- */
.split{display:grid;gap:32px;grid-template-columns:1fr}
@media(min-width:1024px){.split{grid-template-columns:4fr 7fr;gap:56px;align-items:start}}
.sticky-side{position:sticky;top:104px}
.side-note{
  margin-top:22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:20px;box-shadow:var(--shadow-1);
}
.side-note h4{font-size:.95rem;font-weight:800;margin-bottom:10px}
.side-note p{font-size:13.5px;color:var(--muted);line-height:1.8}
.check-list{display:grid;gap:14px;grid-template-columns:1fr}
@media(min-width:768px){.check-list{grid-template-columns:repeat(2,1fr)}}
.check-item{
  display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:18px 20px;transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.check-item:hover{border-color:rgba(31,138,91,.45);transform:translateY(-2px);box-shadow:var(--shadow-1)}
.check-mark{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:rgba(31,138,91,.12);
  color:var(--success);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;
}
.check-item h3{font-size:.98rem;font-weight:700;margin-bottom:4px}
.check-item p{font-size:13.5px;color:var(--muted);line-height:1.75}

/* ---------- table ---------- */
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);box-shadow:var(--shadow-1)}
table.msg-table{width:100%;border-collapse:collapse;min-width:680px}
table.msg-table th,table.msg-table td{
  text-align:left;padding:16px 20px;font-size:14.5px;border-bottom:1px solid var(--line);vertical-align:top;
}
table.msg-table th{
  font-size:13px;font-weight:800;color:var(--muted);letter-spacing:.06em;
  background:var(--bg-2);white-space:nowrap;
}
table.msg-table tr:last-child td{border-bottom:none}
table.msg-table td strong{font-weight:700;color:var(--ink)}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:700;letter-spacing:.03em;
}
.tag-warn{background:rgba(217,142,4,.14);color:#9a6600}
.tag-ok{background:rgba(31,138,91,.13);color:var(--success)}
.tag-danger{background:rgba(214,69,69,.13);color:var(--danger)}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 4px;font-size:1.05rem;font-weight:700;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--accent)}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:16px;color:var(--ink-2);
  transition:transform .26s var(--ease),color .26s var(--ease),border-color .26s var(--ease);
}
.faq details[open] .faq-icon{transform:rotate(45deg);color:var(--accent);border-color:var(--accent)}
.faq .answer{padding:0 4px 24px;max-width:900px}
.faq .answer p{color:var(--muted);font-size:15px;line-height:1.85}
.faq .answer p + p{margin-top:10px}

/* ---------- cta ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--ink);border-radius:var(--radius-lg);color:#F7F5F0}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;opacity:.18;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(14,15,17,.95) 0%,rgba(14,15,17,.72) 60%,rgba(255,106,42,.22) 100%);
}
.cta-inner{position:relative;z-index:2;padding:40px 28px;display:grid;gap:24px}
@media(min-width:1024px){.cta-inner{grid-template-columns:7fr 5fr;align-items:center;padding:56px 52px;gap:40px}}
.cta-inner h2{color:#fff;font-size:clamp(1.5rem,2.8vw,2.2rem);font-weight:800;line-height:1.24}
.cta-inner p{margin-top:12px;color:rgba(247,245,240,.76);font-size:.98rem;line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media(min-width:1024px){.cta-actions{justify-content:flex-end}}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#F7F5F0;padding:60px 0 26px;margin-top:0}
.footer-grid{display:grid;gap:34px;grid-template-columns:1fr}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:#F7F5F0;color:var(--ink)}
.footer-brand .brand-line{color:#fff}
.footer-brand .brand-line-2{color:rgba(247,245,240,.6)}
.footer-desc{font-size:14px;color:rgba(247,245,240,.66);line-height:1.85;max-width:34em}
.footer-col h4{font-size:14px;font-weight:800;color:#fff;margin-bottom:16px;letter-spacing:.04em}
.footer-link{display:block;font-size:14px;color:rgba(247,245,240,.68);padding:6px 0;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-link:hover{color:var(--accent-soft);transform:translateX(3px)}
.footer-note{font-size:13.5px;color:rgba(247,245,240,.62);line-height:1.8;margin-bottom:8px}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid rgba(247,245,240,.14);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(247,245,240,.52);
}

@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .media-card:hover{transform:none}
  .flow-step:hover{transform:none}
}

/* roulang page: category5 */
:root{
  --bg:#F7F5F0;
  --bg-2:#EFEBE3;
  --ink:#0E0F11;
  --ink-2:#2A2D31;
  --muted:#6B6F76;
  --line:rgba(14,15,17,0.10);
  --accent:#FF6A2A;
  --accent-soft:rgba(255,106,42,0.12);
  --accent-2:#5BC8B8;
  --accent-2-soft:rgba(91,200,184,0.14);
  --success:#1F8A5B;
  --warning:#D98E04;
  --danger:#D64545;
  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:24px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(14,15,17,.04),0 12px 32px rgba(14,15,17,.06);
  --shadow-2:0 18px 48px rgba(14,15,17,.10);
  --ease:cubic-bezier(.2,.8,.2,1);
  --font-sans:"MiSans","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","SF Pro Display","DIN Alternate",system-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-sans);
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
::selection{background:var(--accent);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1024px){.container{max-width:1320px;padding:0 40px}}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,240,.88);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease),background .24s var(--ease);
}
.site-header.is-stuck{box-shadow:0 10px 30px rgba(14,15,17,.08);background:rgba(247,245,240,.97)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--ink);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:18px;letter-spacing:.02em;
  flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.16}
.brand-line{font-weight:800;font-size:15px;letter-spacing:-.01em}
.brand-line-2{font-size:12px;color:var(--muted);font-weight:600;letter-spacing:.04em}
.nav-pill{display:none}
@media (min-width:1024px){
  .nav-pill{
    display:flex;align-items:center;gap:2px;padding:4px;border-radius:var(--radius-pill);
    background:rgba(14,15,17,.04);
  }
  .nav-pill .pill{padding:8px 14px}
}
.pill{
  display:inline-block;padding:8px 16px;border-radius:var(--radius-pill);
  font-size:14px;font-weight:600;color:var(--ink-2);white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.pill:hover{background:var(--bg-2);color:var(--ink)}
.pill.active{background:var(--ink);color:#fff}
.header-actions{display:flex;align-items:center;gap:10px}
.menu-btn{
  display:grid;place-items:center;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;cursor:pointer;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.menu-btn:hover{border-color:var(--ink);background:var(--bg-2)}
.menu-lines{display:flex;flex-direction:column;gap:4px}
.menu-lines span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}
@media (min-width:1024px){.menu-btn{display:none}}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:12px;padding:12px 22px;font-weight:700;font-size:15px;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--accent);transform:translateY(-2px);box-shadow:0 12px 28px rgba(255,106,42,.28)}
.btn-ghost{background:rgba(255,255,255,.7);border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink);background:#fff;transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:13.5px;border-radius:10px}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#ff7f47;transform:translateY(-2px);box-shadow:0 12px 30px rgba(255,106,42,.35)}
.btn-outline-light{background:transparent;border-color:rgba(247,245,240,.35);color:#F7F5F0}
.btn-outline-light:hover{border-color:var(--accent);color:var(--accent)}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* ============ Sections ============ */
.section{padding:52px 0}
@media (min-width:768px){.section{padding:76px 0}}
@media (min-width:1024px){.section{padding:96px 0}}
.section-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--accent);
  text-transform:uppercase;
}
.kicker::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--accent)}
.section-head{max-width:760px;margin-bottom:30px}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.15rem);font-weight:800;line-height:1.22;letter-spacing:-.01em;margin-top:12px}
.section-head p{color:var(--muted);font-size:15.5px;margin-top:12px}
.eyebrow{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--radius-pill);
  background:var(--accent-soft);color:#B84514;font-size:12.5px;font-weight:700;letter-spacing:.08em;
}

/* ============ Page hero ============ */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:52px 0 44px}
@media (min-width:768px){.page-hero{padding:76px 0 64px}}
.page-hero-bg{position:absolute;inset:0;background-image:url("/assets/images/backpic/back-2.png");background-size:cover;background-position:center right;opacity:.45}
.page-hero-veil{position:absolute;inset:0;background:linear-gradient(100deg,rgba(247,245,240,.98) 0%,rgba(247,245,240,.88) 46%,rgba(247,245,240,.62) 100%)}
.page-hero-inner{position:relative;display:grid;gap:36px}
@media (min-width:1024px){.page-hero-inner{grid-template-columns:7fr 5fr;align-items:center;gap:56px}}
.page-hero h1{
  font-size:clamp(2rem,4.4vw,3.35rem);font-weight:900;line-height:1.13;
  letter-spacing:-.012em;margin-top:16px;
}
.page-hero .lead{color:var(--ink-2);font-size:16.5px;line-height:1.9;margin-top:18px;max-width:56ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-aside{position:relative}
.hero-aside img{border-radius:var(--radius-lg);box-shadow:var(--shadow-2);aspect-ratio:16/10;object-fit:cover;width:100%}
.hero-float{
  position:absolute;left:16px;bottom:-18px;right:auto;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:14px 18px;box-shadow:var(--shadow-1);display:flex;gap:18px;align-items:center;
}
.hero-float .num{font-family:var(--font-num);font-size:22px;font-weight:800;letter-spacing:-.01em}
.hero-float small{display:block;font-size:12px;color:var(--muted);letter-spacing:.02em}

/* ============ Search panel ============ */
.search-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;box-shadow:var(--shadow-1)}
@media (min-width:768px){.search-panel{padding:30px}}
.search-field{display:flex;flex-direction:column;gap:12px}
@media (min-width:640px){.search-field{flex-direction:row}}
.search-input{
  flex:1;height:52px;border-radius:14px;border:1px solid var(--line);background:var(--bg);
  padding:0 18px;font-size:15px;transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
}
.search-input::placeholder{color:var(--muted)}
.search-input:focus{outline:none;border-color:var(--accent);background:#fff;box-shadow:0 0 0 3px rgba(255,106,42,.16)}
.hot-words{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px}
.hot-label{font-size:13px;color:var(--muted);font-weight:600;letter-spacing:.04em}
.chip{
  border:1px solid var(--line);background:var(--bg);border-radius:var(--radius-pill);
  padding:7px 14px;font-size:13.5px;color:var(--ink-2);cursor:pointer;
  transition:all .18s var(--ease);
}
.chip:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft);transform:translateY(-1px)}

/* ============ Cards ============ */
.card-grid{display:grid;gap:18px;grid-template-columns:1fr}
@media (min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.card-grid{grid-template-columns:repeat(4,1fr)}}
.p-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.p-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(255,106,42,.5)}
.p-card figure{position:relative;margin:0;aspect-ratio:16/10;overflow:hidden;background:var(--bg-2)}
.p-card img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease)}
.p-card:hover img{transform:scale(1.04)}
.card-badge{
  position:absolute;left:12px;top:12px;padding:4px 10px;border-radius:var(--radius-pill);
  background:rgba(14,15,17,.82);color:#F7F5F0;font-size:11.5px;font-weight:700;letter-spacing:.06em;
  backdrop-filter:blur(4px);
}
.p-card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.p-card-body h3{font-size:17px;font-weight:700;line-height:1.5}
.p-card-body p{font-size:14.5px;color:var(--muted);line-height:1.8}
.card-link{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;font-weight:700;color:var(--ink);
  border-bottom:2px solid transparent;padding-bottom:2px;
  transition:color .2s var(--ease),border-color .2s var(--ease),gap .2s var(--ease);
}
.p-card:hover .card-link{color:var(--accent);border-color:var(--accent);gap:10px}

/* ============ Steps ============ */
.steps{display:grid;gap:16px;grid-template-columns:1fr}
@media (min-width:768px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.steps{grid-template-columns:repeat(4,1fr)}}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:24px 20px 22px;transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-1);border-color:rgba(255,106,42,.45)}
.step-num{font-family:var(--font-num);font-size:13px;font-weight:800;letter-spacing:.14em;color:var(--accent)}
.step h3{font-size:16.5px;font-weight:700;margin-top:10px}
.step p{font-size:14.5px;color:var(--muted);margin-top:10px;line-height:1.82}

/* ============ FAQ ============ */
.faq-grid{display:grid;gap:0}
@media (min-width:1024px){.faq-grid{grid-template-columns:1fr 1fr;gap:0 56px;align-items:start}}
.faq-item{border-top:1px solid var(--line)}
.faq-grid > .faq-col:last-child .faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;gap:16px;align-items:flex-start;justify-content:space-between;
  padding:20px 2px;font-weight:700;font-size:16px;line-height:1.62;color:var(--ink);
  transition:color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--accent)}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  position:relative;display:grid;place-items:center;margin-top:2px;color:var(--ink);
  transition:transform .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease),color .24s var(--ease);
}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-icon::before{width:12px;height:1.6px}
.faq-icon::after{width:1.6px;height:12px}
.faq-item[open] .faq-icon{transform:rotate(45deg);border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}
.faq-body{padding:0 44px 22px 2px;color:var(--ink-2);font-size:15px;line-height:1.9}
.faq-body a{color:var(--accent-2);border-bottom:1px solid rgba(91,200,184,.5)}

/* ============ Contact ============ */
.contact-layout{display:grid;gap:28px}
@media (min-width:1024px){.contact-layout{grid-template-columns:5fr 7fr;gap:48px;align-items:start}}
.info-list{display:flex;flex-direction:column;gap:16px;margin-top:24px}
.info-item{display:flex;gap:14px;align-items:flex-start;padding:16px 18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md)}
.info-dot{flex:0 0 auto;width:10px;height:10px;border-radius:50%;background:var(--accent);margin-top:9px}
.info-item h4{font-size:14.5px;font-weight:700}
.info-item p{font-size:14px;color:var(--muted);margin-top:4px;line-height:1.75}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-1)}
@media (min-width:768px){.form-card{padding:32px}}
.form-row{display:grid;gap:16px;grid-template-columns:1fr}
@media (min-width:640px){.form-row-2{grid-template-columns:1fr 1fr}}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.field label{font-size:13px;font-weight:600;color:var(--muted);letter-spacing:.03em}
.field input,.field select,.field textarea{
  width:100%;height:48px;border-radius:12px;border:1px solid var(--line);background:var(--bg);
  padding:0 16px;font-size:15px;transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
}
.field textarea{height:auto;min-height:120px;padding:14px 16px;line-height:1.8;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);background:#fff;box-shadow:0 0 0 3px rgba(255,106,42,.16)}
.field-note{font-size:12.5px;color:var(--muted)}

/* ============ CTA ============ */
.cta-wrap{padding:0 0 8px}
.cta-banner{
  position:relative;overflow:hidden;background:var(--ink);border-radius:var(--radius-lg);
  padding:34px 24px;color:#F7F5F0;
}
@media (min-width:1024px){.cta-banner{padding:52px;display:flex;align-items:center;justify-content:space-between;gap:48px}}
.cta-banner::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;opacity:.18;
}
.cta-banner > *{position:relative}
.cta-banner h2{font-size:clamp(1.4rem,2.5vw,2rem);font-weight:800;line-height:1.25;letter-spacing:-.01em;max-width:22ch}
.cta-banner p{color:rgba(247,245,240,.72);font-size:15px;margin-top:14px;max-width:46ch;line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
@media (min-width:1024px){.cta-actions{margin-top:0;flex-shrink:0}}

/* ============ Footer ============ */
.site-footer{background:var(--ink);color:#F7F5F0;padding:56px 0 28px}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:36px}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px}}
.footer-brand{display:flex;align-items:center;gap:10px}
.site-footer .brand-mark{background:var(--bg);color:var(--ink)}
.site-footer .brand-line{color:#F7F5F0}
.site-footer .brand-line-2{color:rgba(247,245,240,.6)}
.footer-desc{color:rgba(247,245,240,.7);font-size:14px;line-height:1.85;margin-top:16px;max-width:38ch}
.footer-col h4{font-size:13.5px;font-weight:700;letter-spacing:.08em;color:rgba(247,245,240,.6);margin-bottom:16px}
.footer-link{display:block;color:rgba(247,245,240,.86);font-size:14.5px;padding:6px 0;transition:color .18s var(--ease),transform .18s var(--ease)}
.footer-link:hover{color:var(--accent);transform:translateX(3px)}
.footer-note{color:rgba(247,245,240,.7);font-size:13.5px;line-height:1.75;margin-bottom:8px}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(247,245,240,.14);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(247,245,240,.55);
}

/* ============ Mobile drawer ============ */
.mobile-drawer{
  position:fixed;inset:0;z-index:90;background:var(--bg);
  transform:translateX(100%);transition:transform .3s var(--ease);
  display:flex;flex-direction:column;padding:22px 20px 28px;overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0)}
@media (min-width:1024px){.mobile-drawer{display:none}}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;
  font-size:20px;line-height:1;cursor:pointer;display:grid;place-items:center;
}
.drawer-links{display:flex;flex-direction:column;margin-top:12px}
.drawer-link{
  font-size:20px;font-weight:700;padding:16px 2px;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;color:var(--ink);
  transition:color .18s var(--ease),padding-left .18s var(--ease);
}
.drawer-link:hover,.drawer-link.active{color:var(--accent);padding-left:8px}
.drawer-cta{margin-top:26px}
.drawer-cta .btn{width:100%;height:52px}

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