/* roulang page: index */
:root{
  --c-brand:#F05A45;
  --c-brand-deep:#C93C2B;
  --c-accent:#12857E;
  --c-grad:linear-gradient(118deg,#F05A45 0%,#FFA62B 100%);
  --c-ink:#22181C;
  --c-ink-2:#6B5E57;
  --c-line:#EADFD6;
  --c-bg:#FDF8F3;
  --c-bg-alt:#F6EEE7;
  --c-white:#FFFFFF;
  --c-badge-bg:rgba(18,133,126,.10);
  --c-dark:#1D1518;
  --r-xl:32px;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 1px 3px rgba(34,24,28,.06);
  --sh-2:0 18px 40px -26px rgba(34,24,28,.45);
  --sh-3:0 30px 64px -34px rgba(240,90,69,.45);
  --c-focus:0 0 0 3px rgba(240,90,69,.28);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .22s ease;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
button{cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-family:var(--font);}
h1{font-size:clamp(2rem,3.4vw,3.25rem);font-weight:700;line-height:1.15;letter-spacing:-.01em;}
h2{font-size:clamp(1.5rem,2.2vw,2.125rem);font-weight:700;line-height:1.25;}
h3{font-size:1.25rem;font-weight:600;line-height:1.4;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
::selection{background:rgba(240,90,69,.22);color:var(--c-ink);}
:focus-visible{outline:none;box-shadow:var(--c-focus);border-radius:6px;}

.grid-container{max-width:1200px;padding-left:32px;padding-right:32px;}
.section{padding:88px 0;position:relative;}
.section--alt{background:var(--c-bg-alt);}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--r-pill);
  background:var(--c-badge-bg);color:var(--c-accent);
  font-size:.8125rem;font-weight:700;letter-spacing:.04em;
  margin-bottom:20px;
}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--c-accent);display:block;}
.section-title{margin-bottom:14px;}
.section-desc{color:var(--c-ink-2);font-size:1rem;line-height:1.85;max-width:640px;}
.section-head.center .section-desc{margin-left:auto;margin-right:auto;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  text-align:center;white-space:nowrap;
}
.btn:focus-visible{outline:none;box-shadow:var(--c-focus);}
.btn-primary{background:var(--c-grad);color:#fff;box-shadow:0 14px 30px -18px rgba(240,90,69,.95);}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--sh-3);color:#fff;}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--c-line);color:var(--c-ink);}
.btn-ghost:hover{border-color:var(--c-brand);color:var(--c-brand);background:#fff;}
.btn-ghost:active{background:var(--c-bg-alt);}
.btn-white{background:#fff;color:var(--c-brand);box-shadow:0 16px 34px -22px rgba(0,0,0,.55);}
.btn-white:hover{transform:translateY(-1px);color:var(--c-brand-deep);box-shadow:0 22px 40px -22px rgba(0,0,0,.6);}
.btn-outline-white{background:transparent;border:1.5px solid rgba(255,255,255,.7);color:#fff;}
.btn-outline-white:hover{background:rgba(255,255,255,.14);color:#fff;}
.btn-sm{min-height:42px;padding:0 20px;font-size:14px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(253,248,243,.86);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid transparent;
  transition:box-shadow .28s ease,border-color .28s ease,background .28s ease;
}
.site-header.scrolled{border-bottom-color:var(--c-line);box-shadow:var(--sh-1);background:rgba(253,248,243,.94);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .28s ease;}
.site-header.scrolled .header-inner{height:60px;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:12px;background:var(--c-grad);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:16px;font-weight:700;letter-spacing:0;
  box-shadow:0 10px 22px -12px rgba(240,90,69,.95);
}
.brand-text{font-size:19px;font-weight:700;letter-spacing:.01em;color:var(--c-ink);line-height:1.2;}
.brand-tag{display:block;font-size:11px;font-weight:500;letter-spacing:.14em;color:var(--c-ink-2);opacity:.8;}
.nav-desktop{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;
  padding:0 14px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:var(--c-ink);
  transition:color .25s ease,background .25s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:3px;border-radius:3px;
  background:var(--c-brand);transform:scaleX(0);transform-origin:left center;
  transition:transform .28s ease;
}
.nav-link:hover{color:var(--c-brand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-brand);background:var(--c-badge-bg);}
.nav-link.is-active::after{transform:scaleX(1);}
.header-cta{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:36px;height:36px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:4px;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.nav-toggle span{display:block;width:16px;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .28s ease,opacity .2s ease;}
.nav-toggle:hover{border-color:var(--c-brand);}
.nav-toggle.open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-panel{
  position:absolute;top:100%;left:0;right:0;
  background:var(--c-bg);border-top:1px solid var(--c-line);
  box-shadow:var(--sh-2);padding:16px 20px 24px;
  transform:translateY(-130%);opacity:0;visibility:hidden;
  transition:transform .32s ease,opacity .28s ease,visibility .28s;
}
.mobile-panel.open{transform:translateY(0);opacity:1;visibility:visible;}
.mobile-panel a{
  display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:var(--r-sm);
  font-size:15px;font-weight:500;color:var(--c-ink);
}
.mobile-panel a.is-active{color:var(--c-brand);background:var(--c-badge-bg);}
.mobile-panel .btn{width:100%;margin-top:12px;}

/* ---------- hero ---------- */
.hero{padding:64px 0 88px;overflow:hidden;}
.hero-copy{max-width:560px;}
.hero h1{margin-bottom:20px;}
.hero h1 em{font-style:normal;color:var(--c-brand);}
.hero-sub{font-size:1.0625rem;line-height:1.8;color:var(--c-ink-2);max-width:520px;margin-bottom:32px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px;}
.hero-actions .btn{min-width:160px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px;}
.hero-stats li{
  display:inline-flex;align-items:baseline;gap:8px;
  padding:9px 18px;border-radius:var(--r-pill);
  background:var(--c-badge-bg);border:1px solid rgba(18,133,126,.16);
  font-size:13px;color:var(--c-ink-2);
}
.hero-stats strong{font-size:17px;font-weight:700;color:var(--c-accent);font-variant-numeric:tabular-nums;}
.hero-visual{
  position:relative;border-radius:var(--r-xl);background:var(--c-grad);
  padding:32px;min-height:440px;overflow:hidden;
  box-shadow:var(--sh-3);
  display:flex;align-items:center;justify-content:center;
}
.hero-visual::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(255,255,255,.22) 0%,rgba(255,255,255,0) 58%);
}
.hero-bg{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  opacity:.26;mix-blend-mode:overlay;
}
.hero-shot{
  position:relative;z-index:2;width:100%;max-width:430px;
  background:#fff;border-radius:var(--r-lg);padding:14px;
  box-shadow:0 34px 60px -30px rgba(34,24,28,.55);
  transform:translate(24px,-24px);
}
.hero-shot img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:14px;}
.hero-shot figcaption{font-size:13px;color:var(--c-ink-2);padding:12px 4px 2px;line-height:1.6;}
.hero-float{
  position:absolute;left:24px;bottom:24px;z-index:3;
  background:rgba(255,255,255,.94);border-radius:var(--r-md);
  padding:12px 18px;box-shadow:var(--sh-2);
  font-size:13px;color:var(--c-ink);line-height:1.5;
}
.hero-float b{display:block;font-size:15px;color:var(--c-brand);font-weight:700;}

/* ---------- feature cards ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.feature-card{
  background:var(--c-white);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:32px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  display:flex;flex-direction:column;
}
.feature-card:hover{transform:translateY(-4px);border-color:rgba(240,90,69,.35);box-shadow:var(--sh-2);}
.feature-card:nth-child(1){grid-column:span 7;}
.feature-card:nth-child(2){grid-column:span 5;}
.feature-card:nth-child(3){grid-column:span 5;}
.feature-card:nth-child(4){grid-column:span 7;}
.feature-num{
  width:40px;height:40px;border-radius:var(--r-sm);
  background:var(--c-badge-bg);color:var(--c-accent);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;letter-spacing:.04em;
  font-variant-numeric:tabular-nums;margin-bottom:20px;
}
.feature-card h3{margin-bottom:12px;}
.feature-card p{color:var(--c-ink-2);font-size:15px;line-height:1.85;margin-bottom:20px;}
.feature-link{
  margin-top:auto;display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--c-brand);
}
.feature-link .arw{transition:transform .25s ease;display:inline-block;}
.feature-link:hover .arw{transform:translateX(4px);}

/* ---------- shots carousel ---------- */
.shot-wrap{position:relative;}
.shot-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 0 26px;scrollbar-width:none;-webkit-overflow-scrolling:touch;
}
.shot-track::-webkit-scrollbar{display:none;}
.shot-card{
  flex:0 0 320px;scroll-snap-align:center;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:16px;box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease;
}
.shot-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.shot-card img{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:var(--r-md);background:var(--c-bg-alt);}
.shot-card p{font-size:14px;color:var(--c-ink-2);margin:14px 4px 4px;line-height:1.6;}
.shot-controls{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:8px;}
.shot-dots{display:flex;align-items:center;gap:8px;}
.shot-dot{
  width:8px;height:8px;border-radius:var(--r-pill);border:0;padding:0;
  background:var(--c-line);transition:width .28s ease,background .28s ease;
}
.shot-dot.is-active{width:24px;background:var(--c-brand);}
.shot-arrow{
  width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--c-line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--c-ink);
  transition:background .25s ease,color .25s ease,border-color .25s ease;
}
.shot-arrow:hover{background:var(--c-brand);border-color:var(--c-brand);color:#fff;}

/* ---------- spec ---------- */
.spec-list{display:flex;flex-direction:column;gap:10px;}
.spec-row{
  display:flex;align-items:center;gap:16px;min-height:56px;
  padding:10px 20px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.spec-row:hover{border-color:rgba(18,133,126,.3);box-shadow:var(--sh-1);}
.spec-icon{
  width:36px;height:36px;border-radius:10px;background:var(--c-badge-bg);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;color:var(--c-accent);
}
.spec-icon svg{width:18px;height:18px;}
.spec-label{flex:1;font-size:14px;color:var(--c-ink-2);line-height:1.5;}
.spec-value{font-size:15px;font-weight:600;color:var(--c-ink);text-align:right;font-variant-numeric:tabular-nums;}
.tip-bar{
  display:flex;gap:14px;align-items:flex-start;
  margin-top:24px;padding:18px 20px;border-radius:var(--r-md);
  background:var(--c-bg-alt);border-left:4px solid var(--c-accent);
  font-size:14px;color:var(--c-ink-2);line-height:1.8;
}
.tip-bar b{color:var(--c-ink);font-weight:600;}

/* ---------- news ---------- */
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(240,90,69,.32);}
.news-tag{
  align-self:flex-start;padding:5px 12px;border-radius:var(--r-pill);
  background:var(--c-badge-bg);color:var(--c-accent);
  font-size:12px;font-weight:700;letter-spacing:.03em;margin-bottom:16px;
}
.news-title{
  font-size:17px;font-weight:600;line-height:1.55;color:var(--c-ink);margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-desc{
  font-size:14px;color:var(--c-ink-2);line-height:1.8;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{margin-top:auto;font-size:13px;color:var(--c-ink-2);opacity:.85;font-variant-numeric:tabular-nums;}
.empty-state{
  text-align:center;padding:56px 24px;border:1px dashed var(--c-line);
  border-radius:var(--r-lg);background:#fff;
}
.empty-state .empty-icon{
  display:inline-flex;width:52px;height:52px;border-radius:50%;
  align-items:center;justify-content:center;background:var(--c-badge-bg);
  color:var(--c-accent);font-size:22px;margin-bottom:16px;
}
.empty-state p{color:var(--c-ink-2);font-size:15px;margin-bottom:18px;}

/* ---------- quotes ---------- */
.quote-wall{columns:3;column-gap:20px;}
.quote-card{
  break-inside:avoid;margin-bottom:20px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-lg);padding:24px;box-shadow:var(--sh-1);
  transition:box-shadow .25s ease,border-color .25s ease;
}
.quote-card:hover{box-shadow:var(--sh-2);border-color:rgba(240,90,69,.28);}
.quote-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;}
.stars{display:flex;gap:2px;color:var(--c-accent);font-size:15px;letter-spacing:1px;}
.quote-date{font-size:12px;color:var(--c-ink-2);opacity:.8;font-variant-numeric:tabular-nums;}
.quote-body{font-size:15px;line-height:1.8;color:var(--c-ink-2);}
.quote-foot{
  display:flex;align-items:center;gap:12px;margin-top:18px;padding-top:16px;
  border-top:1px dashed var(--c-line);
}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:0 0 auto;
  background:var(--c-grad);color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;
}
.quote-user{font-size:14px;font-weight:600;color:var(--c-ink);line-height:1.4;}
.quote-role{font-size:12px;color:var(--c-ink-2);opacity:.85;line-height:1.4;}

/* ---------- cta ---------- */
.cta-card{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:var(--c-grad);padding:56px;color:#fff;box-shadow:var(--sh-3);
}
.cta-card::after{
  content:"";position:absolute;right:-90px;top:-80px;width:340px;height:340px;
  border-radius:50%;border:38px solid rgba(255,255,255,.14);
}
.cta-card::before{
  content:"";position:absolute;right:80px;bottom:-140px;width:260px;height:260px;
  border-radius:50%;border:26px solid rgba(255,255,255,.10);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.35fr 1fr;gap:40px;align-items:center;}
.cta-card h2{color:#fff;margin-bottom:14px;}
.cta-card p{color:rgba(255,255,255,.88);font-size:15px;line-height:1.8;max-width:520px;}
.cta-actions{display:flex;flex-direction:column;gap:12px;}
.cta-note{font-size:12px;color:rgba(255,255,255,.82);}
.cta-link{color:#fff;text-decoration:underline;text-underline-offset:4px;font-size:13px;}
.cta-link:hover{color:#fff;opacity:.85;}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:10px;max-width:860px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item[open]{border-color:rgba(240,90,69,.35);box-shadow:var(--sh-1);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:14px 20px;font-size:16px;font-weight:600;color:var(--c-ink);
  cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-plus{
  width:24px;height:24px;border-radius:50%;flex:0 0 auto;
  background:var(--c-bg-alt);color:var(--c-ink-2);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;line-height:1;transition:transform .3s ease,background .25s ease,color .25s ease;
}
.faq-item[open] .faq-plus{background:var(--c-brand);color:#fff;transform:rotate(45deg);}
.faq-body{
  padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--c-ink-2);
  border-top:1px solid var(--c-line);padding-top:16px;
}

/* ---------- footer ---------- */
.site-footer{background:var(--c-bg-alt);border-top:1px solid var(--c-line);padding-top:64px;}
.footer-top{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.35fr;gap:32px;padding-bottom:48px;}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:14px;line-height:1.9;color:var(--c-ink-2);max-width:320px;}
.footer-social{display:flex;gap:10px;margin-top:20px;}
.footer-social a{
  width:38px;height:38px;border-radius:50%;background:#fff;border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;color:var(--c-ink-2);
  font-size:13px;transition:background .25s ease,color .25s ease,border-color .25s ease,transform .25s ease;
}
.footer-social a:hover{background:var(--c-brand);border-color:var(--c-brand);color:#fff;transform:translateY(-2px);}
.footer-col h4{
  font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--c-ink);
  margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--c-ink-2);}
.footer-col a:hover{color:var(--c-brand);text-decoration:underline;text-underline-offset:4px;}
.footer-form{display:flex;gap:10px;margin-top:14px;}
.footer-form input{
  flex:1;min-width:0;height:48px;border-radius:var(--r-md);border:1px solid var(--c-line);
  background:#fff;padding:0 16px;font-size:15px;color:var(--c-ink);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.footer-form input::placeholder{color:#A79A93;}
.footer-form input:focus{outline:none;border-color:var(--c-brand);box-shadow:var(--c-focus);}
.footer-form button{min-height:48px;padding:0 22px;border-radius:var(--r-md);border:0;background:var(--c-grad);color:#fff;font-weight:600;font-size:15px;transition:opacity .22s ease,transform .22s ease;}
.footer-form button:hover{opacity:.92;transform:translateY(-1px);}
.footer-tip{font-size:12px;color:var(--c-ink-2);opacity:.8;margin-top:10px;}
.footer-bottom{
  border-top:1px solid var(--c-line);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--c-ink-2);
}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom a:hover{color:var(--c-brand);text-decoration:underline;text-underline-offset:4px;}

/* ---------- responsive ---------- */
@media screen and (max-width:1024px){
  .grid-container{padding-left:24px;padding-right:24px;}
  .section{padding:64px 0;}
  .nav-desktop{display:none;}
  .nav-toggle{display:flex;}
  .hero{padding:48px 0 64px;}
  .hero-visual{margin-top:40px;min-height:360px;padding:24px;}
  .hero-shot{transform:none;max-width:100%;}
  .feature-card:nth-child(1),
  .feature-card:nth-child(2),
  .feature-card:nth-child(3),
  .feature-card:nth-child(4){grid-column:span 6;}
  .quote-wall{columns:2;}
  .cta-card{padding:44px 36px;}
  .cta-inner{grid-template-columns:1fr;gap:28px;}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}
}
@media screen and (max-width:768px){
  .section{padding:48px 0;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .header-inner{height:60px;}
  .site-header.scrolled .header-inner{height:60px;}
  .brand-text{font-size:17px;}
  .header-cta .btn{display:none;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .hero-stats li{flex:1 1 calc(50% - 6px);justify-content:center;}
  .feature-grid{grid-template-columns:1fr;gap:16px;}
  .feature-card:nth-child(1),
  .feature-card:nth-child(2),
  .feature-card:nth-child(3),
  .feature-card:nth-child(4){grid-column:span 1;}
  .feature-card{padding:24px;}
  .shot-card{flex:0 0 78vw;}
  .shot-arrow{display:none;}
  .quote-wall{columns:1;}
  .cta-card{padding:32px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-top{grid-template-columns:1fr;gap:28px;}
  .footer-form{flex-direction:column;}
  .footer-form button{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .spec-row{flex-wrap:wrap;padding:14px 16px;gap:12px;}
  .spec-value{text-align:left;width:100%;padding-left:52px;}
}
@media screen and (max-width:520px){
  h1{font-size:1.75rem;}
  .hero-sub{font-size:1rem;}
  .hero-stats li{flex:1 1 100%;}
  .hero-float{position:static;margin-top:16px;text-align:center;}
  .hero-shot{box-shadow:var(--sh-2);}
  .section-head{margin-bottom:28px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --c-brand:#F05A45;
  --c-brand-deep:#C93C2B;
  --c-accent:#12857E;
  --c-grad:linear-gradient(118deg,#F05A45 0%,#FFA62B 100%);
  --c-ink:#22181C;
  --c-ink-2:#6B5E57;
  --c-line:#EADFD6;
  --c-bg:#FDF8F3;
  --c-bg-alt:#F6EEE7;
  --c-white:#FFFFFF;
  --c-badge-bg:rgba(18,133,126,.10);
  --ring:0 0 0 3px rgba(240,90,69,.28);
  --r-xl:32px;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 1px 3px rgba(34,24,28,.06);
  --sh-2:0 18px 40px -26px rgba(34,24,28,.45);
  --sh-3:0 30px 64px -34px rgba(240,90,69,.45);
  --font-base:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-base);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--c-accent);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-brand)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:-.01em}
p{margin:0 0 20px}
ul,ol{margin:0 0 20px;padding-left:24px}
a:focus-visible,button:focus-visible,input:focus-visible{outline:none;box-shadow:var(--ring);border-radius:var(--r-sm)}
.grid-container{width:100%;max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px}
.grid-container::before,.grid-container::after{content:none}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;text-decoration:none;
  transition:transform .22s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
}
.btn-primary{background:var(--c-grad);color:#fff;box-shadow:0 12px 26px -18px rgba(240,90,69,.95)}
.btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:rgba(240,90,69,.42);color:var(--c-brand-deep)}
.btn-ghost:hover{background:rgba(240,90,69,.08);color:var(--c-brand-deep);transform:translateY(-1px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(253,248,243,.94);
  border-bottom:1px solid var(--c-line);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{background:rgba(255,255,255,.94);box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .25s ease}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);text-decoration:none;flex-shrink:0}
.brand:hover{color:var(--c-ink)}
.brand-mark{
  width:36px;height:36px;border-radius:12px;background:var(--c-grad);color:#fff;
  display:grid;place-items:center;font-size:17px;font-weight:700;
  box-shadow:0 10px 22px -14px rgba(240,90,69,.95);flex-shrink:0;
}
.brand-text{font-size:19px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.brand-tag{
  font-size:11px;font-weight:700;letter-spacing:.04em;color:var(--c-accent);
  background:var(--c-badge-bg);border-radius:var(--r-sm);padding:2px 7px;margin-left:6px;vertical-align:2px;
}
.nav-desktop{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;min-height:44px;
  padding:0 14px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:var(--c-ink);text-decoration:none;
  transition:color .22s ease,background .22s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:8px;height:3px;border-radius:3px;
  background:var(--c-brand);transform:scaleX(0);transform-origin:left center;
  transition:transform .28s ease;
}
.nav-link:hover{color:var(--c-brand)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-brand);background:var(--c-badge-bg)}
.nav-link.is-active::after{transform:scaleX(1)}
.header-cta{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;padding:0;border-radius:10px;
  border:1px solid var(--c-line);background:#fff;cursor:pointer;place-items:center;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);margin:3px auto;transition:transform .25s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.mobile-panel{
  display:none;position:absolute;left:0;right:0;top:100%;
  background:var(--c-bg);border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-2);padding:12px 20px 20px;
  flex-direction:column;gap:4px;
}
.mobile-panel.is-open{display:flex}
.mobile-panel a{
  display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:var(--r-md);
  font-size:15px;font-weight:500;color:var(--c-ink);
}
.mobile-panel a:hover{background:var(--c-bg-alt);color:var(--c-brand)}
.mobile-panel a.is-active{color:var(--c-brand);background:var(--c-badge-bg)}
.mobile-panel .btn{margin-top:8px;color:#fff;justify-content:center}
.mobile-panel .btn:hover{color:#fff}

/* ============ 文章头部 ============ */
.article-hero{
  background:linear-gradient(180deg,#FDF8F3 0%,#F6EEE7 100%);
  border-bottom:1px solid var(--c-line);
  padding:26px 0 52px;
}
.hero-wrap{max-width:840px;margin:0 auto}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  list-style:none;margin:0 0 22px;padding:0;font-size:12px;color:var(--c-ink-2);
}
.breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0}
.breadcrumb li+li::before{content:"/";color:#c6b4a7}
.breadcrumb a{color:var(--c-ink-2)}
.breadcrumb a:hover{color:var(--c-brand)}
.breadcrumb .current{color:var(--c-ink);font-weight:600;max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tag-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--c-badge-bg);color:var(--c-accent);
  font-size:13px;font-weight:700;letter-spacing:.04em;
}
.tag-chip i{font-size:11px}
.article-title{
  margin:18px 0 0;
  font-size:clamp(1.75rem,2.8vw,2.5rem);
  line-height:1.25;letter-spacing:-.01em;color:var(--c-ink);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:20px;font-size:13px;color:var(--c-ink-2);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#c9b9ad;display:inline-block}
.article-meta .meta-strong{font-weight:600;color:var(--c-ink)}
.article-meta i{color:var(--c-accent);margin-right:5px;font-size:12px}

/* ============ 正文区 ============ */
.article-body{padding:56px 0 24px}
.reading{max-width:760px;margin:0 auto}
.article-cover{
  margin:0 0 36px;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--c-line);box-shadow:var(--sh-2);background:var(--c-bg-alt);
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.prose{font-size:16px;line-height:1.95;color:var(--c-ink-2)}
.prose > *:first-child{margin-top:0}
.prose p{margin:0 0 20px}
.prose h2{
  font-size:clamp(1.3rem,2vw,1.6rem);line-height:1.4;
  margin:42px 0 16px;color:var(--c-ink);
}
.prose h3{font-size:1.15rem;line-height:1.5;margin:32px 0 12px;color:var(--c-ink)}
.prose h4{font-size:1rem;margin:24px 0 10px;color:var(--c-ink)}
.prose ul,.prose ol{padding-left:24px;margin:0 0 20px}
.prose li{margin:8px 0}
.prose blockquote{
  margin:28px 0;padding:20px 24px;
  border-left:4px solid var(--c-brand);
  background:var(--c-bg-alt);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--c-ink);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:var(--r-md);margin:24px 0 12px;border:1px solid var(--c-line)}
.prose a{color:var(--c-accent);text-decoration:underline;text-underline-offset:3px}
.prose a:hover{color:var(--c-brand)}
.prose strong{color:var(--c-ink)}
.prose code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  background:var(--c-bg-alt);border-radius:6px;padding:2px 6px;font-size:.9em;color:var(--c-ink);
}
.prose table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.prose th,.prose td{border-bottom:1px solid var(--c-line);padding:12px 14px;text-align:left}
.prose th{color:var(--c-ink);font-weight:600;background:var(--c-bg-alt)}
.prose hr{border:0;border-top:1px solid var(--c-line);margin:36px 0}
.notice-bar{
  display:flex;gap:12px;align-items:flex-start;
  margin:34px 0 0;padding:16px 20px;
  background:var(--c-bg-alt);border-left:4px solid var(--c-accent);
  border-radius:var(--r-md);font-size:14px;line-height:1.8;color:var(--c-ink-2);
}
.notice-bar i{color:var(--c-accent);margin-top:5px}

/* ============ 空态 ============ */
.empty-section{padding:72px 0 96px}
.empty-card{
  max-width:560px;margin:0 auto;padding:48px 32px;text-align:center;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--sh-1);
}
.empty-card .empty-icon{
  width:64px;height:64px;margin:0 auto 20px;border-radius:20px;
  background:var(--c-badge-bg);color:var(--c-accent);
  display:grid;place-items:center;font-size:24px;
}
.empty-card h1{font-size:1.5rem;margin-bottom:12px}
.empty-card p{font-size:15px;margin-bottom:24px}

/* ============ 相关阅读 ============ */
.related{padding:0 0 24px}
.section-head{margin-bottom:28px}
.section-head h2{font-size:clamp(1.35rem,2.2vw,1.75rem);line-height:1.3}
.section-head p{margin:8px 0 0;font-size:15px;color:var(--c-ink-2)}
.rel-card{
  display:flex;flex-direction:column;gap:12px;height:100%;
  padding:26px;border-radius:var(--r-lg);
  background:#fff;border:1px solid var(--c-line);box-shadow:var(--sh-1);
  color:var(--c-ink-2);text-decoration:none;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(240,90,69,.35);color:var(--c-ink-2)}
.rel-tag{
  align-self:flex-start;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-badge-bg);color:var(--c-accent);font-size:12px;font-weight:700;letter-spacing:.04em;
}
.rel-card h3{font-size:16px;line-height:1.5;color:var(--c-ink)}
.rel-card p{font-size:14px;line-height:1.8;margin:0;color:var(--c-ink-2)}
.rel-more{
  margin-top:auto;padding-top:6px;display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--c-brand);
}
.rel-more i{transition:transform .22s ease;font-size:12px}
.rel-card:hover .rel-more i{transform:translateX(4px)}
.article-grid{margin-bottom:0}
.back-row{text-align:center;padding:40px 0 84px}
.back-row .btn{background:#fff;box-shadow:var(--sh-1)}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-bg-alt);border-top:1px solid var(--c-line);padding:64px 0 0;margin-top:8px}
.footer-top{display:grid;grid-template-columns:5fr 2.1fr 2.1fr 3.4fr;gap:32px;padding-bottom:48px}
.footer-brand p{font-size:14px;line-height:1.85;margin:18px 0 20px;max-width:360px;color:var(--c-ink-2)}
.footer-social{display:flex;gap:10px}
.footer-social a{
  width:38px;height:38px;border-radius:50%;background:#fff;border:1px solid var(--c-line);
  display:grid;place-items:center;font-size:13px;font-weight:600;color:var(--c-ink-2);
  transition:border-color .22s ease,color .22s ease,transform .22s ease;
}
.footer-social a:hover{border-color:var(--c-brand);color:var(--c-brand);transform:translateY(-2px)}
.footer-col h4{font-size:15px;margin:0 0 18px;letter-spacing:.02em}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--c-ink-2)}
.footer-col a:hover{color:var(--c-brand);text-decoration:underline;text-underline-offset:4px}
.footer-form{display:flex;gap:8px;margin:14px 0 10px}
.footer-form input{
  flex:1;min-width:0;height:48px;padding:0 16px;font-size:15px;
  border:1px solid var(--c-line);border-radius:var(--r-md);background:#fff;color:var(--c-ink);
}
.footer-form input::placeholder{color:#a5968d}
.footer-form input:focus{outline:none;border-color:var(--c-brand);box-shadow:var(--ring)}
.footer-form button{
  height:48px;padding:0 20px;border:0;border-radius:var(--r-md);
  background:var(--c-grad);color:#fff;font-size:15px;font-weight:600;cursor:pointer;
  transition:box-shadow .25s ease,transform .22s ease;
}
.footer-form button:hover{box-shadow:var(--sh-3);transform:translateY(-1px)}
.footer-tip{font-size:12px;line-height:1.7;color:var(--c-ink-2);opacity:.85;margin:0}
.footer-bottom{
  border-top:1px solid var(--c-line);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--c-ink-2);
}
.footer-bottom .links a{margin-left:18px;color:var(--c-ink-2)}
.footer-bottom .links a:hover{color:var(--c-brand)}

/* ============ 响应式 ============ */
@media screen and (max-width:1024px){
  .grid-container{padding-left:24px;padding-right:24px}
  .footer-top{grid-template-columns:1fr 1fr;gap:36px 32px}
  .footer-brand{grid-column:1 / -1}
  .article-body{padding:44px 0 16px}
  .hero-wrap{max-width:100%}
}
@media screen and (max-width:768px){
  .nav-desktop{display:none}
  .nav-toggle{display:grid}
  .header-inner{height:60px}
  .brand-text{font-size:17px}
  .brand-tag{display:none}
  .article-hero{padding:20px 0 40px}
  .article-title{margin-top:14px}
  .breadcrumb .current{max-width:200px}
  .article-body{padding:36px 0 12px}
  .prose{font-size:15.5px;line-height:1.9}
  .prose h2{margin-top:34px}
  .article-cover{margin-bottom:28px}
  .site-footer{padding-top:48px}
  .footer-top{grid-template-columns:1fr;gap:32px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .footer-bottom .links a{margin-left:0;margin-right:16px}
  .back-row{padding:32px 0 64px}
}
@media screen and (max-width:520px){
  .grid-container{padding-left:20px;padding-right:20px}
  .header-cta .btn-sm{display:none}
  .article-meta{font-size:12.5px;gap:8px}
  .rel-card{padding:20px}
  .empty-card{padding:36px 22px}
  .footer-form{flex-direction:column}
  .footer-form button{width:100%}
}

/* roulang page: category1 */
:root{
  --c-brand:#F05A45;
  --c-brand-deep:#C93C2B;
  --c-accent:#12857E;
  --c-grad:linear-gradient(118deg,#F05A45 0%,#FFA62B 100%);
  --c-ink:#22181C;
  --c-ink-2:#6B5E57;
  --c-line:#EADFD6;
  --c-bg:#FDF8F3;
  --c-bg-alt:#F6EEE7;
  --c-white:#FFFFFF;
  --c-badge-bg:rgba(18,133,126,.10);
  --c-focus:0 0 0 3px rgba(240,90,69,.28);
  --r-xl:32px;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 1px 3px rgba(34,24,28,.06);
  --sh-2:0 18px 40px -26px rgba(34,24,28,.45);
  --sh-3:0 30px 64px -34px rgba(240,90,69,.45);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--c-bg);
  color:var(--c-ink);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-accent);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--c-brand);}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:none;box-shadow:var(--c-focus);border-radius:var(--r-sm);}
.grid-container{max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;width:100%;}
@media (min-width:768px){.grid-container{padding-left:32px;padding-right:32px;}}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.02em;border:1px solid transparent;
  cursor:pointer;transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease;
  text-align:center;line-height:1;
}
.btn-primary{background:var(--c-grad);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{background:transparent;color:var(--c-ink);border:1.5px solid var(--c-line);}
.btn-ghost:hover{border-color:var(--c-brand);color:var(--c-brand);transform:translateY(-1px);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--c-badge-bg);color:var(--c-accent);
  border-radius:var(--r-pill);padding:7px 16px;
  font-size:13px;font-weight:700;letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);display:inline-block;}
.section{padding:48px 0;}
@media (min-width:768px){.section{padding:64px 0;}}
@media (min-width:1024px){.section{padding:88px 0;}}
.section-head{max-width:720px;margin-bottom:32px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--c-accent);margin-bottom:14px;}
.eyebrow::before{content:"";width:24px;height:3px;border-radius:2px;background:var(--c-brand);}
h2{font-size:clamp(1.5rem,2.2vw,2.125rem);font-weight:700;line-height:1.25;letter-spacing:-.01em;color:var(--c-ink);}
.section-head p{margin-top:14px;color:var(--c-ink-2);font-size:1rem;line-height:1.85;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(253,248,243,.88);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease,background-color .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);background:rgba(255,255,255,.92);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:60px;transition:height .25s ease;}
.site-header.is-scrolled .header-inner{height:56px;}
@media (min-width:1024px){
  .header-inner{height:72px;}
  .site-header.is-scrolled .header-inner{height:60px;}
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);}
.brand:hover{color:var(--c-ink);}
.brand-mark{
  width:36px;height:36px;border-radius:12px;background:var(--c-grad);
  color:#fff;display:grid;place-items:center;font-size:17px;font-weight:700;
  box-shadow:var(--sh-1);flex:0 0 36px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;font-weight:700;font-size:17px;letter-spacing:.01em;}
.brand-tag{font-size:10px;font-weight:600;color:var(--c-ink-2);letter-spacing:.18em;margin-top:2px;}
.nav-desktop{display:none;}
@media (min-width:1024px){.nav-desktop{display:flex;align-items:center;gap:2px;}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:44px;padding:0 14px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:var(--c-ink);
  transition:color .24s ease,background-color .24s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:10px;height:3px;border-radius:2px;
  background:var(--c-brand);transform:scaleX(0);transform-origin:left center;
  transition:transform .28s ease;
}
.nav-link:hover{color:var(--c-brand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-brand);background:var(--c-badge-bg);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-cta{display:flex;align-items:center;gap:10px;}
.header-cta .btn-primary{display:none;}
@media (min-width:768px){.header-cta .btn-primary{display:inline-flex;}}
.nav-toggle{
  width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--c-line);
  background:var(--c-white);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  cursor:pointer;padding:0;transition:border-color .22s ease,background-color .22s ease;
}
.nav-toggle:hover{border-color:var(--c-brand);}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .25s ease,opacity .25s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
@media (min-width:1024px){.nav-toggle{display:none;}}
.mobile-panel{
  display:none;flex-direction:column;gap:4px;
  padding:12px 20px 20px;background:var(--c-bg);
  border-top:1px solid var(--c-line);box-shadow:var(--sh-2);
}
.mobile-panel.is-open{display:flex;}
.mobile-panel a{
  display:flex;align-items:center;height:48px;padding:0 16px;border-radius:var(--r-md);
  color:var(--c-ink);font-size:15px;font-weight:500;
}
.mobile-panel a:hover{background:var(--c-badge-bg);color:var(--c-brand);}
.mobile-panel a.is-active{background:var(--c-badge-bg);color:var(--c-brand);font-weight:600;}
.mobile-panel .btn{justify-content:center;height:48px;margin-top:8px;color:#fff;}
.mobile-panel .btn:hover{color:#fff;}

/* ---------- 页头 ---------- */
.page-hero{padding:36px 0 40px;border-bottom:1px solid var(--c-line);}
@media (min-width:1024px){.page-hero{padding:56px 0 56px;}}
.crumbs{font-size:12.5px;color:var(--c-ink-2);margin-bottom:22px;display:flex;flex-wrap:wrap;gap:6px;align-items:center;}
.crumbs a{color:var(--c-ink-2);}
.crumbs a:hover{color:var(--c-brand);}
.crumbs .sep{opacity:.55;}
.crumbs .now{color:var(--c-ink);font-weight:600;}
.page-hero-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:center;}
@media (min-width:1024px){.page-hero-grid{grid-template-columns:7fr 5fr;gap:56px;}}
.page-hero h1{
  font-size:clamp(1.85rem,3.2vw,2.85rem);font-weight:700;line-height:1.18;
  letter-spacing:-.01em;margin:16px 0 18px;color:var(--c-ink);
}
.page-hero h1 em{font-style:normal;color:var(--c-brand);}
.hero-lead{color:var(--c-ink-2);font-size:1rem;line-height:1.85;max-width:560px;}
.hero-lead + .hero-lead{margin-top:12px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-actions .btn{flex:1 1 180px;}
@media (min-width:768px){.hero-actions .btn{flex:0 0 auto;}}
.hero-figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  background:var(--c-bg-alt);aspect-ratio:16/10;box-shadow:var(--sh-2);
  border:1px solid var(--c-line);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure .fig-tag{
  position:absolute;left:16px;bottom:16px;
  background:rgba(255,255,255,.94);border-radius:var(--r-pill);
  padding:8px 16px;font-size:12.5px;font-weight:600;color:var(--c-ink);
  box-shadow:var(--sh-1);
}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;top:56px;z-index:60;
  background:rgba(253,248,243,.94);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:top .25s ease;
}
@media (min-width:1024px){.anchor-bar{top:72px;}}
.site-header.is-scrolled ~ .anchor-bar{top:56px;}
@media (min-width:1024px){.site-header.is-scrolled ~ .anchor-bar{top:60px;}}
.anchor-scroll{display:flex;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:none;-webkit-overflow-scrolling:touch;}
.anchor-scroll::-webkit-scrollbar{display:none;}
.anchor-pill{
  flex:0 0 auto;display:inline-flex;align-items:center;height:38px;padding:0 18px;
  border-radius:var(--r-pill);border:1px solid var(--c-line);background:var(--c-white);
  font-size:13.5px;font-weight:600;color:var(--c-ink-2);white-space:nowrap;
  transition:all .22s ease;
}
.anchor-pill:hover{border-color:var(--c-brand);color:var(--c-brand);}
.anchor-pill.is-active{background:var(--c-brand);border-color:var(--c-brand);color:#fff;}

/* ---------- 指标带 ---------- */
.metrics-band{
  margin-top:36px;border-radius:var(--r-xl);padding:32px 24px;
  background:var(--c-ink);color:#fff;position:relative;overflow:hidden;
  box-shadow:var(--sh-2);
}
.metrics-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(240,90,69,.55),rgba(240,90,69,0) 70%);
  pointer-events:none;
}
.metrics-grid{position:relative;display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:768px){.metrics-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
.metric{padding:16px 18px;border-radius:var(--r-md);background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.10);}
.metric .num{font-size:1.75rem;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.02em;}
.metric .num span{font-size:.9rem;font-weight:600;color:rgba(255,255,255,.65);margin-left:4px;}
.metric .cap{margin-top:6px;font-size:13px;color:rgba(255,255,255,.72);line-height:1.6;}

/* ---------- 图文交替 ---------- */
.feature-row{
  display:grid;grid-template-columns:1fr;gap:28px;align-items:center;
  padding:40px 0;border-bottom:1px dashed var(--c-line);scroll-margin-top:140px;
}
.feature-row:last-child{border-bottom:0;}
@media (min-width:1024px){
  .feature-row{grid-template-columns:5fr 7fr;gap:56px;padding:56px 0;}
  .feature-row.reverse{grid-template-columns:7fr 5fr;}
  .feature-row.reverse .feature-media{order:2;}
  .feature-row.reverse .feature-body{order:1;}
}
.feature-media{
  border-radius:var(--r-lg);background:var(--c-white);border:1px solid var(--c-line);
  padding:12px;box-shadow:var(--sh-1);transition:transform .25s ease,box-shadow .25s ease;
}
.feature-media:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.feature-media img{border-radius:var(--r-md);width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--c-bg-alt);}
.feature-body .step-no{
  display:inline-grid;place-items:center;width:40px;height:40px;border-radius:var(--r-sm);
  background:var(--c-badge-bg);color:var(--c-accent);font-weight:700;font-size:14px;
  font-variant-numeric:tabular-nums;margin-bottom:16px;
}
.feature-body h3{font-size:1.25rem;font-weight:600;line-height:1.4;margin-bottom:12px;}
.feature-body p{color:var(--c-ink-2);font-size:.975rem;line-height:1.85;}
.feature-body p + p{margin-top:12px;}
.point-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.point-list li{position:relative;padding-left:18px;font-size:.94rem;color:var(--c-ink-2);line-height:1.75;}
.point-list li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--c-brand);
}

/* ---------- 规格区 ---------- */
.spec-section{background:var(--c-bg-alt);border-radius:var(--r-xl);padding:32px 20px;}
@media (min-width:768px){.spec-section{padding:44px 36px;}}
@media (min-width:1024px){.spec-section{padding:56px 48px;}}
.spec-layout{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:1024px){.spec-layout{grid-template-columns:4fr 8fr;gap:48px;align-items:start;}}
.spec-intro p{margin-top:14px;color:var(--c-ink-2);font-size:.96rem;line-height:1.85;}
.spec-intro .btn{margin-top:22px;}
.spec-list{display:flex;flex-direction:column;gap:10px;}
.spec-item{
  display:flex;align-items:center;gap:14px;min-height:56px;padding:8px 18px;
  background:var(--c-white);border:1px solid var(--c-line);border-radius:var(--r-md);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.spec-item:hover{border-color:rgba(240,90,69,.35);box-shadow:var(--sh-1);}
.spec-icon{
  width:40px;height:40px;flex:0 0 40px;border-radius:var(--r-sm);
  background:var(--c-badge-bg);color:var(--c-accent);display:grid;place-items:center;
  font-size:13px;font-weight:700;
}
.spec-label{font-size:14px;color:var(--c-ink-2);}
.spec-value{margin-left:auto;font-size:15px;font-weight:600;color:var(--c-ink);text-align:right;font-variant-numeric:tabular-nums;}
.spec-note{
  margin-top:22px;display:flex;gap:14px;align-items:flex-start;
  background:rgba(255,255,255,.75);border-radius:var(--r-md);padding:16px 20px;
  border-left:4px solid var(--c-accent);
}
.spec-note p{font-size:13.5px;line-height:1.8;color:var(--c-ink-2);}

/* ---------- 页内 CTA ---------- */
.inline-cta{
  display:flex;flex-direction:column;gap:18px;align-items:flex-start;
  background:var(--c-bg-alt);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:26px 24px;
}
@media (min-width:768px){.inline-cta{flex-direction:row;align-items:center;justify-content:space-between;padding:28px 32px;}}
.inline-cta h3{font-size:1.1rem;font-weight:600;line-height:1.4;}
.inline-cta p{margin-top:6px;font-size:.92rem;color:var(--c-ink-2);line-height:1.75;}
.inline-cta .btn{flex:0 0 auto;width:100%;}
@media (min-width:768px){.inline-cta .btn{width:auto;}}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:10px;max-width:880px;}
.faq-item{
  background:var(--c-white);border:1px solid var(--c-line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item:hover{border-color:rgba(240,90,69,.3);}
.faq-item[open]{border-color:rgba(240,90,69,.35);box-shadow:var(--sh-1);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:16px 20px;cursor:pointer;list-style:none;
  font-size:15.5px;font-weight:600;color:var(--c-ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{
  width:24px;height:24px;flex:0 0 24px;border-radius:50%;border:1px solid var(--c-line);
  display:grid;place-items:center;color:var(--c-ink-2);font-size:16px;line-height:1;
  transition:transform .3s ease,background-color .3s ease,color .3s ease,border-color .3s ease;
}
.faq-item[open] .faq-icon{background:var(--c-brand);border-color:var(--c-brand);color:#fff;transform:rotate(45deg);}
.faq-body{padding:16px 20px 20px;border-top:1px solid var(--c-line);}
.faq-body p{font-size:14.5px;line-height:1.85;color:var(--c-ink-2);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-bg-alt);border-top:1px solid var(--c-line);padding:48px 0 24px;margin-top:48px;}
@media (min-width:1024px){.site-footer{padding:64px 0 28px;}}
.footer-top{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:768px){.footer-top{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-top{grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:32px;}}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:var(--c-ink-2);max-width:340px;}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social a{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--c-line);
  background:var(--c-white);color:var(--c-ink-2);display:grid;place-items:center;
  font-size:13px;font-weight:600;transition:all .22s ease;
}
.footer-social a:hover{background:var(--c-brand);border-color:var(--c-brand);color:#fff;transform:translateY(-2px);}
.footer-col h4{font-size:15px;font-weight:600;color:var(--c-ink);margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{font-size:14px;color:var(--c-ink-2);}
.footer-col ul a:hover{color:var(--c-brand);text-decoration:underline;text-underline-offset:4px;}
.footer-tip{font-size:12.5px;color:var(--c-ink-2);opacity:.9;line-height:1.7;margin-top:10px;}
.footer-form{display:flex;flex-direction:column;gap:10px;margin-top:14px;}
@media (min-width:520px){.footer-form{flex-direction:row;}}
.footer-form input{
  height:48px;flex:1 1 auto;min-width:0;padding:0 16px;font-size:15px;font-family:inherit;
  border:1px solid var(--c-line);border-radius:var(--r-md);background:var(--c-white);color:var(--c-ink);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.footer-form input::placeholder{color:#A99C93;}
.footer-form input:focus{outline:none;border-color:var(--c-brand);box-shadow:var(--c-focus);}
.footer-form button{
  height:48px;padding:0 24px;border:0;border-radius:var(--r-md);cursor:pointer;
  background:var(--c-grad);color:#fff;font-size:15px;font-weight:600;
  transition:transform .22s ease,box-shadow .22s ease;
}
.footer-form button:hover{transform:translateY(-1px);box-shadow:var(--sh-3);}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid var(--c-line);
  display:flex;flex-direction:column;gap:12px;
  font-size:13px;color:var(--c-ink-2);
}
@media (min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;}}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:16px;}
.footer-bottom .links a{color:var(--c-ink-2);font-size:13px;}
.footer-bottom .links a:hover{color:var(--c-brand);}

/* roulang page: category2 */
:root{
  --c-brand:#F05A45;
  --c-brand-deep:#C93C2B;
  --c-accent:#12857E;
  --c-grad:linear-gradient(118deg,#F05A45 0%,#FFA62B 100%);
  --c-grad-cool:linear-gradient(152deg,#1B2A33 0%,#20313A 55%,#0E4A46 100%);
  --c-ink:#22181C;
  --c-ink-2:#6B5E57;
  --c-line:#EADFD6;
  --c-bg:#FDF8F3;
  --c-bg-alt:#F6EEE7;
  --c-white:#FFFFFF;
  --c-badge-bg:rgba(18,133,126,.10);
  --c-brand-bg:rgba(240,90,69,.09);
  --c-focus:0 0 0 3px rgba(240,90,69,.28);
  --r-xl:32px;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 1px 3px rgba(34,24,28,.06);
  --sh-2:0 18px 40px -26px rgba(34,24,28,.45);
  --sh-3:0 30px 64px -34px rgba(240,90,69,.45);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:100px;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4{margin:0 0 12px;color:var(--c-ink);font-weight:700;line-height:1.25;letter-spacing:-.005em;}
p{margin:0 0 16px;}
a{color:var(--c-accent);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--c-brand);}
img{display:block;max-width:100%;height:auto;}
button{font-family:inherit;}
ul,ol{margin:0;}
::selection{background:rgba(240,90,69,.18);color:var(--c-ink);}
.grid-container{max-width:var(--container);padding-left:32px;padding-right:32px;margin-left:auto;margin-right:auto;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:200;
  background:rgba(253,248,243,.88);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);background:rgba(253,248,243,.94);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .25s ease;}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto;}
.brand:hover{color:inherit;}
.brand-mark{
  width:36px;height:36px;border-radius:12px;background:var(--c-grad);
  color:#fff;font-size:16px;font-weight:700;display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 20px -12px rgba(240,90,69,.95);
}
.brand-text{display:flex;flex-direction:column;font-size:18px;font-weight:700;color:var(--c-ink);line-height:1;letter-spacing:-.01em;}
.brand-tag{font-size:11px;font-weight:500;color:var(--c-ink-2);letter-spacing:.08em;margin-top:5px;}
.nav-desktop{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
  font-size:15px;font-weight:500;color:var(--c-ink);border-radius:var(--r-pill);
  transition:color .25s ease,background .25s ease;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:1px;width:0;height:3px;border-radius:3px;
  background:var(--c-brand);transform:translateX(-50%);transition:width .28s ease;
}
.nav-link:hover{color:var(--c-brand);}
.nav-link:hover::after{width:18px;}
.nav-link.is-active{color:var(--c-brand);background:var(--c-brand-bg);font-weight:600;}
.nav-link.is-active::after{width:18px;}
.nav-link:focus-visible,.brand:focus-visible,.btn:focus-visible,.nav-toggle:focus-visible{
  outline:none;box-shadow:var(--c-focus);border-radius:var(--r-pill);
}
.header-cta{display:flex;align-items:center;gap:10px;flex:0 0 auto;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;border:1.5px solid transparent;
  cursor:pointer;text-decoration:none;white-space:nowrap;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
}
.btn-primary{background:var(--c-grad);color:#fff;box-shadow:0 18px 32px -20px rgba(240,90,69,.95);}
.btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-primary:active{transform:translateY(0);box-shadow:0 10px 22px -16px rgba(240,90,69,.9);}
.btn-ghost{background:transparent;color:var(--c-ink);border-color:var(--c-line);}
.btn-ghost:hover{border-color:var(--c-brand);color:var(--c-brand);background:rgba(240,90,69,.06);}
.btn-ghost:active{background:rgba(240,90,69,.1);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;padding:0;border:1px solid var(--c-line);border-radius:12px;
  background:#fff;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  transition:border-color .25s ease,background .25s ease;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .25s ease,opacity .25s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-panel{display:none;padding:12px 20px 22px;background:var(--c-bg);border-top:1px solid var(--c-line);box-shadow:var(--sh-2);}
.mobile-panel.is-open{display:block;animation:panelDown .26s ease both;}
.mobile-panel a{
  display:flex;align-items:center;height:48px;padding:0 14px;border-radius:12px;
  color:var(--c-ink);font-size:15px;font-weight:500;
}
.mobile-panel a:hover{background:var(--c-brand-bg);color:var(--c-brand);}
.mobile-panel a.is-active{color:var(--c-brand);background:var(--c-brand-bg);font-weight:600;}
.mobile-panel .btn{margin-top:10px;width:100%;}
@keyframes panelDown{from{opacity:0;transform:translateY(-8px);}to{opacity:1;transform:none;}}

/* ---------- hero ---------- */
.cat-hero{
  padding:76px 0 60px;
  background:
    radial-gradient(900px 380px at 50% -140px,rgba(240,90,69,.16),transparent 72%),
    radial-gradient(600px 300px at 88% 10%,rgba(18,133,126,.10),transparent 70%),
    var(--c-bg);
  border-bottom:1px solid var(--c-line);
}
.hero-center{max-width:840px;margin:0 auto;text-align:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 16px;border-radius:var(--r-pill);
  background:var(--c-badge-bg);color:var(--c-accent);font-size:13px;font-weight:600;letter-spacing:.02em;
}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 0 3px rgba(18,133,126,.16);}
.cat-hero h1{font-size:clamp(2rem,3.4vw,3rem);line-height:1.16;letter-spacing:-.012em;margin:22px 0 16px;}
.hero-sub{max-width:680px;margin:0 auto 30px;font-size:1.0625rem;line-height:1.85;color:var(--c-ink-2);}
.faq-search{
  display:flex;align-items:center;gap:10px;max-width:620px;margin:0 auto;
  padding:6px 6px 6px 20px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-pill);
  box-shadow:var(--sh-1);transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-search:focus-within{border-color:var(--c-brand);box-shadow:var(--c-focus);}
.faq-search i{font-size:15px;color:#A2968F;flex:0 0 auto;}
.faq-search input{
  flex:1 1 auto;min-width:0;height:44px;margin:0;padding:0;border:0;background:transparent;
  font-size:15px;color:var(--c-ink);outline:none;box-shadow:none;
}
.faq-search input::placeholder{color:#A2968F;}
.faq-search button{
  flex:0 0 auto;min-height:44px;padding:0 24px;border:0;border-radius:var(--r-pill);
  background:var(--c-grad);color:#fff;font-size:14px;font-weight:600;cursor:pointer;
  transition:box-shadow .25s ease,transform .2s ease;
}
.faq-search button:hover{box-shadow:0 14px 26px -16px rgba(240,90,69,.95);transform:translateY(-1px);}
.hero-meta{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:26px;}
.meta-chip{
  display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 16px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-line);font-size:13px;color:var(--c-ink-2);
}
.meta-chip b{color:var(--c-ink);font-weight:700;font-variant-numeric:tabular-nums;}

/* ---------- faq layout ---------- */
.faq-section{padding:72px 0 16px;background:var(--c-bg);}
.faq-aside{position:relative;}
.aside-inner{position:sticky;top:96px;}
.aside-title{
  font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--c-ink-2);
  margin-bottom:14px;text-transform:uppercase;
}
.aside-nav{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--c-line);list-style:none;padding:0;}
.aside-nav a{
  position:relative;display:flex;align-items:center;min-height:44px;padding:6px 12px 6px 18px;
  font-size:14px;line-height:1.5;color:var(--c-ink-2);border-radius:0 10px 10px 0;
  transition:color .25s ease,background .25s ease;
}
.aside-nav a::before{
  content:"";position:absolute;left:-1px;top:9px;bottom:9px;width:3px;border-radius:3px;
  background:transparent;transition:background .25s ease;
}
.aside-nav a:hover{color:var(--c-brand);background:rgba(240,90,69,.05);}
.aside-nav a.is-active{color:var(--c-brand);font-weight:600;background:var(--c-brand-bg);}
.aside-nav a.is-active::before{background:var(--c-brand);}
.aside-card{
  margin-top:26px;padding:22px;border-radius:var(--r-md);background:var(--c-grad-cool);
  color:rgba(255,255,255,.78);font-size:13px;line-height:1.85;box-shadow:var(--sh-2);
}
.aside-card strong{display:block;color:#fff;font-size:14.5px;margin-bottom:8px;font-weight:600;}
.aside-card a{color:#FFC7A6;font-weight:600;}
.aside-card a:hover{color:#fff;}
.faq-main{position:relative;}
.faq-group{
  padding-bottom:34px;margin-bottom:34px;border-bottom:1px dashed var(--c-line);
  scroll-margin-top:100px;
}
.faq-group:last-of-type{border-bottom:0;margin-bottom:8px;}
.group-head{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:6px;}
.group-index{font-size:13px;font-weight:700;color:var(--c-accent);letter-spacing:.06em;font-variant-numeric:tabular-nums;}
.faq-group h2{font-size:clamp(1.3rem,1.9vw,1.65rem);margin:0;}
.group-desc{font-size:14.5px;line-height:1.8;color:var(--c-ink-2);margin:8px 0 20px;max-width:660px;}

/* ---------- faq item ---------- */
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  margin-bottom:10px;overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item:last-child{margin-bottom:0;}
.faq-item:hover{border-color:rgba(240,90,69,.28);}
.faq-item[open]{border-color:rgba(240,90,69,.35);box-shadow:var(--sh-1);}
.faq-item summary{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:16px 20px;list-style:none;cursor:pointer;
  font-size:15.5px;font-weight:600;line-height:1.6;color:var(--c-ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::marker{content:"";}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  background:var(--c-bg-alt);color:var(--c-ink-2);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:600;line-height:1;
  transition:transform .3s ease,background .25s ease,color .25s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg);background:var(--c-brand);color:#fff;}
.faq-item summary:focus-visible{outline:none;box-shadow:var(--c-focus);border-radius:var(--r-md);}
.faq-body{
  padding:0 20px 20px;border-top:1px solid var(--c-line);
  font-size:15px;line-height:1.9;color:var(--c-ink-2);
  animation:fadeUp .3s ease both;
}
.faq-body p{margin:16px 0 0;}
.faq-body p:last-child{margin-bottom:0;}
.faq-body ul{padding-left:22px;margin:14px 0 0;list-style:disc;}
.faq-body li{margin-bottom:6px;}
@keyframes fadeUp{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:none;}}
.empty-tip{
  display:none;margin-top:20px;padding:22px;border-radius:var(--r-md);
  background:var(--c-bg-alt);border:1px dashed var(--c-line);
  font-size:14.5px;color:var(--c-ink-2);text-align:center;
}

/* ---------- quick section ---------- */
.quick-section{padding:56px 0 24px;background:var(--c-bg);}
.quick-card{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-xl);
  overflow:hidden;box-shadow:var(--sh-2);
}
.quick-media{position:relative;min-height:340px;background:var(--c-bg-alt);}
.quick-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.quick-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(240,90,69,0) 45%,rgba(34,24,28,.42) 100%);
}
.quick-text{padding:44px 44px 40px;}
.quick-text h2{font-size:clamp(1.4rem,2.1vw,1.9rem);margin-bottom:10px;}
.quick-text > p{font-size:15px;line-height:1.85;margin-bottom:24px;}
.quick-list{list-style:none;padding:0;margin:0 0 28px;display:grid;gap:12px;}
.quick-list li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;line-height:1.8;color:var(--c-ink-2);}
.quick-list .num{
  flex:0 0 auto;width:26px;height:26px;margin-top:3px;border-radius:8px;
  background:var(--c-badge-bg);color:var(--c-accent);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.quick-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- notice ---------- */
.notice-section{padding:32px 0 84px;background:var(--c-bg);}
.notice-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  padding:24px 28px;border-radius:var(--r-md);
  background:var(--c-bg-alt);border:1px solid var(--c-line);border-left:4px solid var(--c-accent);
}
.notice-bar .notice-text{flex:1 1 380px;min-width:0;font-size:14.5px;line-height:1.85;color:var(--c-ink-2);}
.notice-bar .notice-text strong{color:var(--c-ink);}

/* ---------- footer ---------- */
.site-footer{background:var(--c-bg-alt);border-top:1px solid var(--c-line);padding:64px 0 26px;}
.footer-top{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1.5fr;gap:36px;
  padding-bottom:40px;border-bottom:1px solid var(--c-line);
}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--c-ink-2);margin:16px 0 18px;max-width:340px;}
.footer-social{display:flex;gap:10px;}
.footer-social a{
  width:38px;height:38px;border-radius:50%;background:#fff;border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600;color:var(--c-ink-2);
  transition:background .25s ease,color .25s ease,border-color .25s ease,transform .2s ease;
}
.footer-social a:hover{background:var(--c-brand);border-color:var(--c-brand);color:#fff;transform:translateY(-2px);}
.footer-col h4{font-size:14px;font-weight:700;color:var(--c-ink);margin-bottom:16px;}
.footer-col ul{list-style:none;padding:0;margin:0;display:grid;gap:10px;}
.footer-col ul a{font-size:14px;color:var(--c-ink-2);}
.footer-col ul a:hover{color:var(--c-brand);text-decoration:underline;text-underline-offset:4px;}
.footer-tip{font-size:12.5px;line-height:1.7;color:var(--c-ink-2);opacity:.85;margin:10px 0 0;}
.footer-form{display:flex;gap:8px;margin-top:12px;}
.footer-form input{
  flex:1 1 auto;min-width:0;height:44px;margin:0;padding:0 14px;border:1px solid var(--c-line);
  border-radius:12px;background:#fff;font-size:14px;color:var(--c-ink);outline:none;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.footer-form input::placeholder{color:#A2968F;}
.footer-form input:focus{border-color:var(--c-brand);box-shadow:var(--c-focus);}
.footer-form button{
  flex:0 0 auto;height:44px;padding:0 18px;border:0;border-radius:12px;
  background:var(--c-grad);color:#fff;font-size:14px;font-weight:600;cursor:pointer;
  transition:box-shadow .25s ease,transform .2s ease;
}
.footer-form button:hover{box-shadow:0 14px 26px -16px rgba(240,90,69,.95);transform:translateY(-1px);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  padding-top:22px;font-size:13px;color:var(--c-ink-2);
}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom .links a{color:var(--c-ink-2);font-size:13px;}
.footer-bottom .links a:hover{color:var(--c-brand);}

/* ---------- responsive ---------- */
@media screen and (max-width:1024px){
  .grid-container{padding-left:24px;padding-right:24px;}
  .cat-hero{padding:60px 0 48px;}
  .faq-section{padding:56px 0 12px;}
  .aside-inner{position:static;}
  .aside-nav{
    flex-direction:row;flex-wrap:nowrap;overflow-x:auto;gap:8px;border-left:0;
    padding-bottom:6px;margin-bottom:24px;-webkit-overflow-scrolling:touch;scrollbar-width:none;
  }
  .aside-nav::-webkit-scrollbar{display:none;}
  .aside-nav a{
    flex:0 0 auto;min-height:40px;padding:0 16px;border-radius:var(--r-pill);
    border:1px solid var(--c-line);background:#fff;font-size:13.5px;
  }
  .aside-nav a::before{display:none;}
  .aside-nav a.is-active{background:var(--c-brand);border-color:var(--c-brand);color:#fff;}
  .aside-card{margin-top:0;margin-bottom:28px;}
  .quick-text{padding:34px;}
  .footer-top{grid-template-columns:1fr 1fr;gap:30px;}
  .footer-brand{grid-column:1 / -1;}
}
@media screen and (max-width:768px){
  .nav-desktop{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:60px;}
  .site-header.is-scrolled .header-inner{height:56px;}
  .cat-hero{padding:48px 0 42px;}
  .hero-sub{font-size:1rem;margin-bottom:24px;}
  .faq-search{padding:5px 5px 5px 16px;}
  .faq-search button{padding:0 18px;}
  .faq-group{padding-bottom:28px;margin-bottom:28px;}
  .quick-card{grid-template-columns:1fr;}
  .quick-media{min-height:220px;}
  .quick-text{padding:28px 24px 30px;}
  .notice-section{padding:24px 0 64px;}
  .notice-bar{padding:20px;}
  .site-footer{padding:52px 0 22px;}
}
@media screen and (max-width:520px){
  .grid-container{padding-left:20px;padding-right:20px;}
  .header-cta .btn-primary{display:none;}
  .brand-text{font-size:16.5px;}
  .brand-tag{font-size:10px;}
  .cat-hero{padding:40px 0 36px;}
  .cat-hero h1{font-size:1.72rem;}
  .faq-search{flex-wrap:nowrap;}
  .faq-search button{padding:0 14px;font-size:13px;}
  .hero-meta{gap:8px;}
  .meta-chip{height:32px;padding:0 12px;font-size:12.5px;}
  .faq-item summary{padding:14px 16px;font-size:15px;min-height:58px;}
  .faq-body{padding:0 16px 18px;font-size:14.5px;}
  .quick-text h2{font-size:1.35rem;}
  .quick-actions .btn{width:100%;}
  .notice-bar .btn{width:100%;}
  .footer-top{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}