/* roulang page: index */
:root{
  --ink:#10231C;
  --ink-deep:#08150F;
  --lime:#C8F135;
  --paper:#FBFAF7;
  --sand:#EFECE4;
  --line:#DCD8CD;
  --text:#1A1C16;
  --muted:#5B5F55;
  --faint:#8A8E82;
  --ok:#2F7D5A;
  --warn:#B3261E;
  --info:#3A5A8C;
  --r-card:14px;
  --r-btn:12px;
  --r-input:10px;
  --shadow-hover:0 14px 36px -18px rgba(16,35,28,.35);
  --ease:cubic-bezier(.22,1,.36,1);
  --header-h:72px;
  --font-sans:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","Space Grotesk","HarmonyOS Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--text);
  font-family:var(--font-sans);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,figure,dl,dd,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}
::selection{background:var(--lime);color:var(--ink)}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px}
.skip-link{position:absolute;left:-9999px;top:0;z-index:200;background:var(--ink);color:var(--paper);padding:10px 18px;border-radius:0 0 10px 0}
.skip-link:focus{left:0}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;background:var(--paper);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease),background .3s var(--ease);
}
.site-header.is-scrolled{
  box-shadow:0 1px 0 rgba(16,35,28,.06),0 10px 26px -22px rgba(16,35,28,.6);
  background:rgba(251,250,247,.94);
  backdrop-filter:blur(6px);
}
.header-inner{display:flex;align-items:center;gap:18px;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);font-weight:700;font-size:18px;letter-spacing:-.01em}
.brand-mark{width:26px;height:26px;flex:0 0 auto;color:var(--ink);transition:transform .4s var(--ease)}
.brand:hover .brand-mark{transform:rotate(-12deg)}
.brand-text{white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:22px;margin:0 auto}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink);
  padding:6px 0;white-space:nowrap;transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:var(--ink);transition:left .24s var(--ease),right .24s var(--ease);
}
.nav-link:hover::after{left:0;right:0}
.nav-link.is-active{font-weight:600}
.nav-link.is-active::after{left:0;right:0}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.search{position:relative;display:flex;align-items:center}
.search input{
  width:190px;height:38px;border:1px solid var(--line);border-radius:999px;
  background:#FFFFFF;padding:0 38px 0 16px;font-size:13.5px;
  transition:width .3s var(--ease),border-color .2s var(--ease);
}
.search input::placeholder{color:var(--faint)}
.search input:focus{width:250px;border-color:var(--ink);outline:none;box-shadow:0 0 0 3px rgba(16,35,28,.07)}
.search svg{position:absolute;right:13px;width:16px;height:16px;color:var(--faint);pointer-events:none}
.menu-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;
  align-items:center;justify-content:center;transition:background .2s var(--ease),border-color .2s var(--ease);
}
.menu-toggle:hover{border-color:var(--ink)}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;transition:transform .25s var(--ease)}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);transition:transform .25s var(--ease),top .25s var(--ease)}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}
.site-header.is-open .menu-toggle span{background:transparent}
.site-header.is-open .menu-toggle span::before{top:0;transform:rotate(45deg)}
.site-header.is-open .menu-toggle span::after{top:0;transform:rotate(-45deg)}
.nav-mobile-extra{display:none}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1.2;
  padding:12px 20px;border:1px solid transparent;white-space:nowrap;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.btn svg{width:16px;height:16px;transition:transform .24s var(--ease)}
.btn-primary{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn-primary:hover{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.btn-primary:hover svg{transform:translateX(4px)}
.btn-primary:active{transform:translateY(1px)}
.btn-secondary{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-secondary:hover{background:var(--ink);color:var(--paper)}
.btn-sm{padding:9px 16px;font-size:14px}
.link-btn{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;
  color:var(--ink);padding-bottom:2px;border-bottom:1px solid var(--ink);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.link-btn:hover{color:var(--ok);border-color:var(--lime)}
.btn-icon{
  width:42px;height:42px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--paper);color:var(--ink);
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.btn-icon:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn-icon svg{width:16px;height:16px}

/* ---------- Badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
  letter-spacing:.04em;padding:4px 10px;border-radius:4px;
  border:1px solid var(--line);background:var(--sand);color:var(--muted);
}
.badge-lime{background:var(--lime);border-color:var(--lime);color:var(--ink)}
.badge-solid{background:var(--ink);border-color:var(--ink);color:var(--paper)}

/* ---------- Hero ---------- */
.hero{padding:52px 0 56px}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px;align-items:start}
.hero-copy > *{animation:heroIn .6s var(--ease) both}
.hero-copy > *:nth-child(1){animation-delay:.04s}
.hero-copy > *:nth-child(2){animation-delay:.1s}
.hero-copy > *:nth-child(3){animation-delay:.16s}
.hero-copy > *:nth-child(4){animation-delay:.22s}
.hero-copy > *:nth-child(5){animation-delay:.28s}
@keyframes heroIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;
  letter-spacing:.12em;color:var(--ink);padding:6px 14px;border-radius:999px;
  background:var(--sand);border:1px solid var(--line);
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--lime);display:inline-block}
.hero-title{
  margin-top:20px;color:var(--ink);font-weight:800;letter-spacing:-.02em;
  font-size:clamp(36px,4.4vw,60px);line-height:1.1;
}
.hero-sub{margin-top:20px;font-size:16.5px;line-height:1.85;color:var(--muted);max-width:540px}
.hero-cta{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{
  margin-top:40px;padding-top:24px;border-top:1px solid var(--line);
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;
}
.stat-num{font-family:var(--font-num);font-size:30px;font-weight:700;line-height:1.1;letter-spacing:-.02em;color:var(--ink)}
.stat-num small{font-size:13px;font-weight:600;margin-left:2px;color:var(--muted)}
.stat-label{margin-top:6px;font-size:12.5px;line-height:1.55;color:var(--faint)}
.hero-visual{position:relative;padding-bottom:34px}
.hero-figure{
  position:relative;aspect-ratio:4/3.4;border-radius:var(--r-card);overflow:hidden;
  border:1px solid rgba(16,35,28,.16);background:var(--sand);
}
.hero-figure img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(8,21,15,0) 42%,rgba(8,21,15,.42) 100%);
}
.hero-track{position:absolute;left:-4%;bottom:-6%;width:108%;height:auto;color:rgba(251,250,247,.6);pointer-events:none}
.hero-float{
  position:absolute;left:-22px;bottom:0;display:flex;align-items:center;gap:12px;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  padding:12px 16px;box-shadow:var(--shadow-hover);max-width:calc(100% + 22px);
  transition:transform .28s var(--ease);
}
.hero-float:hover{transform:translateY(-3px)}
.hero-float-title{font-size:13.5px;font-weight:600;color:var(--ink);line-height:1.5}
.hero-float .arrow{margin-left:auto;font-size:16px;color:var(--ink);transition:transform .24s var(--ease)}
.hero-float:hover .arrow{transform:translateX(4px)}

/* ---------- Sections ---------- */
.section{padding:48px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:36px;flex-wrap:wrap}
.kicker{font-family:var(--font-num);font-size:12px;font-weight:600;letter-spacing:.16em;color:var(--faint);text-transform:uppercase}
.section-title{margin-top:12px;font-size:clamp(26px,2.8vw,36px);line-height:1.22;font-weight:700;letter-spacing:-.01em;color:var(--ink)}
.section-desc{max-width:400px;font-size:14.5px;line-height:1.85;color:var(--muted)}

/* ---------- Feature (主推) ---------- */
.feature-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:24px;align-items:stretch}
.feature-main{
  display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.feature-main:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(16,35,28,.22)}
.feature-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--sand)}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.feature-main:hover .feature-media img{transform:scale(1.03)}
.feature-index{
  position:absolute;top:16px;left:16px;font-family:var(--font-num);font-size:12px;font-weight:700;
  letter-spacing:.14em;color:var(--ink);background:var(--lime);padding:5px 10px;border-radius:4px;
}
.feature-body{padding:24px 24px 28px;display:flex;flex-direction:column;flex:1}
.feature-title{font-size:23px;font-weight:700;line-height:1.35;color:var(--ink)}
.feature-text{margin-top:10px;font-size:15px;line-height:1.85;color:var(--muted)}
.spec-list{margin-top:20px;padding-top:16px;border-top:1px solid var(--line);display:grid;gap:9px}
.spec-row{display:flex;align-items:baseline;justify-content:space-between;gap:16px;font-size:13.5px}
.spec-row dt{color:var(--faint);flex:0 0 auto}
.spec-row dd{color:var(--ink);font-weight:600;text-align:right}
.feature-body .btn{margin-top:22px;align-self:flex-start}
.feature-side{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.feature-mini{
  display:grid;grid-template-columns:118px minmax(0,1fr);gap:16px;align-items:center;
  background:var(--sand);border:1px solid var(--line);border-radius:var(--r-card);padding:16px;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease);
}
.feature-mini:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);background:var(--paper)}
.feature-mini-media{position:relative;aspect-ratio:4/3;border-radius:10px;overflow:hidden;background:var(--line)}
.feature-mini-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.feature-mini:hover .feature-mini-media img{transform:scale(1.05)}
.feature-mini-body{min-width:0}
.feature-mini-num{font-family:var(--font-num);font-size:11px;font-weight:700;letter-spacing:.14em;color:var(--faint)}
.feature-mini-title{margin-top:6px;font-size:17px;font-weight:600;line-height:1.4;color:var(--ink)}
.feature-mini-text{
  margin-top:6px;font-size:13.5px;line-height:1.7;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}

/* ---------- Card grid ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(16,35,28,.22)}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--sand)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:20px 20px 24px;display:flex;flex-direction:column;flex:1}
.card-title{font-size:20px;font-weight:600;line-height:1.35;color:var(--ink)}
.card-text{
  margin-top:8px;font-size:14.5px;line-height:1.8;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.card-arrow{
  width:34px;height:34px;border-radius:50%;border:1px solid var(--line);flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.card-arrow svg{width:14px;height:14px}
.card:hover .card-arrow{background:var(--ink);color:var(--paper);border-color:var(--ink);transform:translateX(2px)}
.card-more{
  display:flex;flex-direction:column;justify-content:space-between;gap:28px;
  padding:26px 24px;background:var(--sand);border:1px solid var(--line);border-radius:var(--r-card);
  transition:background .3s var(--ease),color .3s var(--ease),border-color .3s var(--ease),transform .3s var(--ease);
}
.card-more:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);transform:translateY(-3px)}
.card-more .kicker{color:var(--faint);transition:color .3s var(--ease)}
.card-more:hover .kicker{color:rgba(251,250,247,.6)}
.card-more h3{margin-top:12px;font-size:20px;font-weight:600;line-height:1.4}
.card-more p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--muted);transition:color .3s var(--ease)}
.card-more:hover p{color:rgba(251,250,247,.72)}
.big-arrow{font-size:38px;line-height:1;color:var(--ink);transition:transform .3s var(--ease),color .3s var(--ease)}
.card-more:hover .big-arrow{transform:translateX(8px);color:var(--lime)}

/* ---------- Metrics ---------- */
.metrics{background:var(--sand);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:64px 0}
.metrics-inner{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:32px}
.metric-num{
  font-family:var(--font-num);font-size:clamp(38px,4.8vw,68px);font-weight:700;
  line-height:1;letter-spacing:-.03em;color:var(--ink);
}
.metric-num span{font-size:.4em;font-weight:600;margin-left:4px;color:var(--muted)}
.metric-label{margin-top:14px;font-size:14px;color:var(--muted);line-height:1.6}

/* ---------- Voice carousel ---------- */
.carousel-nav{display:flex;gap:10px}
.voice-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:6px;scrollbar-width:none;-ms-overflow-style:none;
}
.voice-track::-webkit-scrollbar{display:none}
.voice-card{
  flex:0 0 380px;scroll-snap-align:start;display:flex;flex-direction:column;
  background:var(--sand);border:1px solid var(--line);border-radius:var(--r-card);padding:26px 24px;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.voice-card:hover{border-color:rgba(16,35,28,.22);box-shadow:var(--shadow-hover)}
.voice-quote{font-family:Georgia,"Songti SC",serif;font-size:42px;line-height:1;color:var(--ink);opacity:.22}
.voice-text{
  margin-top:6px;font-size:15px;line-height:1.9;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden;
}
.voice-foot{margin-top:auto;padding-top:20px;display:flex;align-items:center;gap:12px}
.voice-avatar{
  width:38px;height:38px;border-radius:50%;background:var(--ink);color:var(--paper);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600;flex:0 0 auto;
}
.voice-name{font-size:14px;font-weight:600;color:var(--ink);line-height:1.4}
.voice-role{font-size:12.5px;color:var(--faint);line-height:1.5}
.voice-progress{margin-top:22px;height:2px;background:var(--line);position:relative;overflow:hidden}
.voice-progress span{
  position:absolute;left:0;top:0;height:100%;width:22%;background:var(--ink);
  transition:width .15s linear;
}
.drag-hint{display:none;margin-top:14px;font-size:12.5px;color:var(--faint);letter-spacing:.06em}

/* ---------- News ---------- */
.news-grid{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:36px;align-items:start}
.news-main{
  display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.news-main:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.news-main-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--sand)}
.news-main-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.news-main:hover .news-main-media img{transform:scale(1.03)}
.news-main-body{padding:22px 24px 26px}
.news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:12.5px;color:var(--faint)}
.news-main-title{margin-top:12px;font-size:21px;font-weight:700;line-height:1.45;color:var(--ink)}
.news-main-text{
  margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-more{margin-top:18px}
.news-rows{display:flex;flex-direction:column}
.news-row{display:block;padding:18px 0;border-bottom:1px solid var(--line);transition:padding-left .24s var(--ease)}
.news-row:first-child{padding-top:0}
.news-row:hover{padding-left:6px}
.news-row:hover .news-row-title{color:var(--ok)}
.news-row-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:12px;color:var(--faint)}
.news-row-title{margin-top:8px;font-size:17px;font-weight:600;line-height:1.5;color:var(--ink);transition:color .2s var(--ease)}
.news-empty{
  border:1px dashed var(--line);border-radius:var(--r-card);min-height:200px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:36px;text-align:center;color:var(--faint);font-size:14px;background:rgba(239,236,228,.4);
}

/* ---------- Assurance ---------- */
.assurance-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.assurance-list li{padding:30px 24px;border-left:1px solid var(--line)}
.assurance-list li:first-child{border-left:0;padding-left:0}
.assurance-icon{width:20px;height:20px;color:var(--ink)}
.assurance-title{margin-top:14px;font-size:16px;font-weight:600;color:var(--ink);line-height:1.45}
.assurance-text{margin-top:8px;font-size:13.5px;line-height:1.75;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:56px;align-items:start}
.faq-side-title{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.3;color:var(--ink);letter-spacing:-.01em}
.faq-side-text{margin-top:14px;font-size:14.5px;line-height:1.85;color:var(--muted)}
.faq-side .link-btn{margin-top:22px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:20px;min-height:64px;padding:14px 0;font-size:17px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--ok)}
.faq-sign{position:relative;width:18px;height:18px;flex:0 0 auto;transition:transform .3s var(--ease)}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:var(--ink);border-radius:2px}
.faq-sign::before{left:0;top:8px;width:18px;height:2px}
.faq-sign::after{left:8px;top:0;width:2px;height:18px;transition:opacity .25s var(--ease)}
.faq-item[open] .faq-sign{transform:rotate(90deg)}
.faq-item[open] .faq-sign::after{opacity:0}
.faq-answer{padding:0 0 24px;font-size:15px;line-height:1.85;color:var(--muted);max-width:660px}

/* ---------- CTA ---------- */
.cta-section{
  margin-top:48px;padding:80px 0;
  background:linear-gradient(180deg,#10231C 0%,#08150F 100%);
}
.cta-grid{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:56px;align-items:start}
.cta-kicker{font-family:var(--font-num);font-size:12px;font-weight:600;letter-spacing:.16em;color:rgba(251,250,247,.5)}
.cta-title{
  margin-top:14px;font-size:clamp(28px,3.2vw,42px);line-height:1.18;font-weight:800;
  letter-spacing:-.02em;color:var(--paper);
}
.cta-text{margin-top:18px;font-size:15.5px;line-height:1.9;color:rgba(251,250,247,.72);max-width:470px}
.cta-points{margin-top:26px;display:grid;gap:14px}
.cta-points li{position:relative;padding-left:24px;font-size:15px;line-height:1.7;color:rgba(251,250,247,.9)}
.cta-points li::before{content:"";position:absolute;left:0;top:12px;width:13px;height:2px;background:var(--lime)}
.form-card{background:var(--paper);border-radius:var(--r-card);padding:30px;box-shadow:0 24px 60px -30px rgba(0,0,0,.55)}
.form-title{font-size:20px;font-weight:700;color:var(--ink)}
.form-note{margin-top:6px;font-size:13px;color:var(--faint);line-height:1.6}
.field{margin-top:16px;display:flex;flex-direction:column;gap:6px}
.field label{font-size:13px;font-weight:600;color:var(--ink)}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r-input);
  background:#FFFFFF;padding:11px 13px;font-size:14.5px;color:var(--text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{resize:vertical;min-height:88px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(16,35,28,.08);
}
.field input:focus-visible,.field select:focus-visible,.field textarea:focus-visible{outline:none}
.form-submit{margin-top:22px;width:100%}
.form-hint{margin-top:12px;font-size:12.5px;line-height:1.7;color:var(--faint)}
.form-success{
  margin-top:16px;display:none;align-items:center;gap:8px;padding:10px 14px;
  border-radius:8px;background:rgba(47,125,90,.1);color:var(--ok);font-size:13.5px;font-weight:600;
}
.form-success.is-visible{display:flex}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink-deep);color:rgba(251,250,247,.72);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--paper);font-weight:700;font-size:18px}
.footer-brand svg{width:26px;height:26px;flex:0 0 auto}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.9;max-width:320px;color:rgba(251,250,247,.62)}
.footer-col h3{font-size:12px;font-weight:600;letter-spacing:.12em;color:rgba(251,250,247,.45);margin-bottom:16px}
.footer-col li{padding:6px 0;font-size:14px;line-height:1.6}
.footer-col a{transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--lime)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;line-height:1.7;color:rgba(251,250,247,.42);
}

/* ---------- Reveal & motion ---------- */
[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
[data-reveal].is-in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .search input{width:150px}
  .search input:focus{width:190px}
  .main-nav{gap:16px}
  .nav-link{font-size:14.5px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .main-nav{display:none}
  .header-actions .search{display:none}
  .menu-toggle{display:inline-flex}
  .site-header.is-open .main-nav{
    display:flex;flex-direction:column;align-items:flex-start;gap:0;margin:0;
    position:absolute;top:100%;left:0;right:0;background:var(--paper);
    border-bottom:1px solid var(--line);padding:10px 24px 28px;
    box-shadow:0 18px 30px -24px rgba(16,35,28,.6);
  }
  .site-header.is-open .nav-link{width:100%;padding:14px 0;font-size:16px;border-bottom:1px solid var(--line)}
  .site-header.is-open .nav-link::after{display:none}
  .site-header.is-open .nav-mobile-extra{display:flex;flex-direction:column;gap:14px;width:100%;margin-top:20px}
  .site-header.is-open .nav-mobile-extra .search{display:flex;width:100%}
  .site-header.is-open .nav-mobile-extra .search input{width:100%}
  .site-header.is-open .nav-mobile-extra .search input:focus{width:100%}
  .hero{padding:36px 0 40px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-visual{padding-bottom:0;max-width:560px}
  .hero-figure{aspect-ratio:16/10}
  .feature-grid{grid-template-columns:1fr}
  .feature-side{grid-template-rows:auto auto}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .news-grid{grid-template-columns:1fr;gap:28px}
  .assurance-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .assurance-list li{padding:24px 20px}
  .assurance-list li:nth-child(odd){border-left:0;padding-left:0}
  .faq-grid{grid-template-columns:1fr;gap:30px}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .cta-section{padding:60px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .header-inner{height:60px;gap:12px}
  .brand{font-size:16px}
  .brand-mark{width:22px;height:22px}
  .section{padding:32px 0}
  .section-head{margin-bottom:24px;gap:16px}
  .hero-title{font-size:clamp(28px,7.4vw,38px)}
  .hero-sub{font-size:15px}
  .hero-cta{gap:12px}
  .hero-cta .btn{flex:1 1 auto;justify-content:center}
  .hero-stats{grid-template-columns:1fr 1fr;gap:20px 16px}
  .stat-num{font-size:26px}
  .hero-float{position:static;margin-top:16px;box-shadow:none;max-width:100%}
  .metrics{padding:44px 0}
  .metrics-inner{grid-template-columns:1fr 1fr;gap:26px 20px}
  .voice-card{flex:0 0 82vw;padding:22px 20px}
  .carousel-nav{display:none}
  .drag-hint{display:block}
  .assurance-list{grid-template-columns:1fr}
  .assurance-list li{border-left:0;border-top:1px solid var(--line);padding:22px 0}
  .assurance-list li:first-child{border-top:0}
  .feature-side{grid-template-rows:auto auto}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{margin-top:32px}
  .form-card{padding:22px}
  .cta-section{padding:48px 0;margin-top:32px}
}
@media (max-width:560px){
  .card-grid{grid-template-columns:1fr}
  .feature-mini{grid-template-columns:1fr}
  .feature-mini-media{aspect-ratio:16/9}
  .news-row{padding:16px 0}
  .news-row:first-child{padding-top:0}
  .faq-item summary{font-size:16px;min-height:58px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  [data-reveal]{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink:#10231C;
  --ink-deep:#08150F;
  --lime:#C8F135;
  --bg:#FBFAF7;
  --sand:#EFECE4;
  --line:#DCD8CD;
  --text:#1A1C16;
  --text-2:#5B5F55;
  --text-3:#8A8E82;
  --ok:#2F7D5A;
  --warn:#B3261E;
  --info:#3A5A8C;
  --r-card:14px;
  --r-btn:12px;
  --r-input:10px;
  --shadow-card:0 14px 36px -18px rgba(16,35,28,.35);
  --ease:cubic-bezier(.22,1,.36,1);
  --header-h:72px;
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter","Space Grotesk",var(--font-cn);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
svg{display:block;}
::selection{background:var(--lime);color:var(--ink);}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 40px;
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease),backdrop-filter .3s var(--ease);
}
.site-header.is-scrolled{
  box-shadow:0 1px 0 rgba(16,35,28,.06),0 10px 30px -24px rgba(16,35,28,.5);
  backdrop-filter:blur(6px);
  background:rgba(251,250,247,.94);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:32px;
  height:var(--header-h);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--ink);
  font-weight:700;
  font-size:18px;
  letter-spacing:-.01em;
  flex-shrink:0;
  transition:color .24s var(--ease);
}
.brand-mark{width:26px;height:26px;color:var(--ink);transition:transform .4s var(--ease);}
.brand:hover .brand-mark{transform:rotate(-12deg);}
.brand:hover{color:var(--ink-deep);}
.main-nav{
  display:flex;
  align-items:center;
  gap:26px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  font-size:16px;
  font-weight:500;
  color:var(--ink);
  padding:6px 0;
  white-space:nowrap;
  transition:color .24s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:-2px;
  height:2px;
  width:0;
  background:var(--ink);
  transform:translateX(-50%);
  transition:width .24s var(--ease),background .24s var(--ease);
}
.nav-link:hover::after{width:100%;}
.nav-link:hover{color:var(--ink-deep);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{width:100%;background:var(--ink);}
.nav-mobile-extra{display:none;}
.header-actions{
  display:flex;
  align-items:center;
  gap:14px;
  flex-shrink:0;
  margin-left:8px;
}
.search{
  display:flex;
  align-items:center;
  gap:8px;
  width:220px;
  padding:0 14px;
  height:42px;
  border:1px solid var(--line);
  border-radius:999px;
  background:#fff;
  transition:width .32s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.search:focus-within{
  width:300px;
  border-color:var(--ink);
  box-shadow:0 0 0 3px rgba(200,241,53,.45);
}
.search input{
  border:0;
  outline:none;
  background:transparent;
  width:100%;
  font-size:14px;
  color:var(--text);
}
.search input::placeholder{color:var(--text-3);}
.search svg{width:17px;height:17px;color:var(--text-3);flex-shrink:0;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.btn svg{width:17px;height:17px;transition:transform .24s var(--ease);}
.btn-primary{background:var(--ink);color:var(--bg);}
.btn-primary:hover{background:var(--lime);color:var(--ink);box-shadow:var(--shadow-card);}
.btn-primary:hover svg{transform:translateX(4px);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--bg);}
.btn-ghost:hover svg{transform:translateX(4px);}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:10px;}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  padding-bottom:2px;
  border-bottom:1px solid var(--ink);
  transition:border-color .24s var(--ease),color .24s var(--ease);
}
.btn-text:hover{border-color:var(--lime);color:var(--ink-deep);}
.btn-text svg{width:15px;height:15px;transition:transform .24s var(--ease);}
.btn-text:hover svg{transform:translateX(4px);}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none;}
.menu-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:10px;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  background:#fff;
}
.menu-toggle span{
  display:block;
  width:18px;height:1.8px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .3s var(--ease),opacity .2s var(--ease);
}
body.nav-open .menu-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg);}
body.nav-open .menu-toggle span:nth-child(2){opacity:0;}
body.nav-open .menu-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 通用小件 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
  padding:5px 11px;
  border:1px solid var(--line);
  background:var(--sand);
  color:var(--text-2);
  border-radius:6px;
  line-height:1;
}
.tag-lime{background:var(--lime);border-color:var(--lime);color:var(--ink);}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:28px 0 0;
  font-size:13px;
  color:var(--text-3);
}
.breadcrumb a{color:var(--text-2);transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .is-current{
  color:var(--text-2);
  max-width:100%;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* ---------- 文章头 ---------- */
.article-head{
  padding:32px 0 36px;
  border-bottom:1px solid var(--line);
  max-width:920px;
}
.article-title{
  font-size:40px;
  line-height:1.18;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--ink);
  margin:18px 0 0;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  margin-top:20px;
  font-size:13px;
  color:var(--text-3);
}
.article-meta .dot{width:3px;height:3px;background:var(--line);border-radius:50%;}
.article-meta strong{color:var(--text-2);font-weight:600;}

/* ---------- 正文布局 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:240px minmax(0,1fr);
  gap:56px;
  padding:48px 0 8px;
  align-items:start;
}
.article-layout.no-toc{grid-template-columns:minmax(0,1fr);}
.article-layout.no-toc .toc{display:none;}

.toc{
  position:sticky;
  top:calc(var(--header-h) + 24px);
  padding-right:8px;
}
.toc-title{
  font-size:12px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--text-3);
  margin-bottom:14px;
}
.toc nav{display:flex;flex-direction:column;border-left:1px solid var(--line);}
.toc-link{
  display:block;
  font-size:14px;
  line-height:1.5;
  color:var(--text-2);
  padding:9px 0 9px 14px;
  margin-left:-1px;
  border-left:2px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.toc-link:hover{color:var(--ink);background:var(--sand);}
.toc-link.is-current{color:var(--ink);font-weight:600;border-left-color:var(--lime);}

/* ---------- 正文排版 ---------- */
.article-body{
  max-width:760px;
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  word-break:break-word;
}
.article-body > :first-child{margin-top:0;}
.article-body h2{
  font-size:26px;
  line-height:1.35;
  font-weight:700;
  color:var(--ink);
  margin:48px 0 16px;
  padding-left:14px;
  border-left:4px solid var(--lime);
  scroll-margin-top:calc(var(--header-h) + 24px);
}
.article-body h3{
  font-size:20px;
  line-height:1.5;
  font-weight:600;
  color:var(--ink);
  margin:32px 0 12px;
  scroll-margin-top:calc(var(--header-h) + 24px);
}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink);margin:24px 0 10px;}
.article-body p{margin:0 0 20px;}
.article-body a{color:var(--ink);border-bottom:1px solid var(--lime);transition:background .2s var(--ease);}
.article-body a:hover{background:rgba(200,241,53,.35);}
.article-body strong{font-weight:700;color:var(--ink);}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:0;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:2px;top:12px;
  width:7px;height:7px;
  background:var(--ink);
  border-radius:1px;
}
.article-body ol{counter-reset:li;list-style:none;}
.article-body ol li{position:relative;padding-left:28px;margin-bottom:10px;counter-increment:li;}
.article-body ol li::before{
  content:counter(li,decimal-leading-zero);
  position:absolute;left:0;top:1px;
  font-family:var(--font-num);
  font-size:13px;
  font-weight:700;
  color:var(--text-3);
}
.article-body blockquote{
  margin:0 0 24px;
  background:var(--sand);
  border-left:3px solid var(--ink);
  border-radius:0 10px 10px 0;
  padding:20px 22px;
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  width:100%;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  margin:26px 0 10px;
}
.article-body figure{margin:26px 0 24px;}
.article-body figcaption{
  font-size:13px;
  color:var(--text-3);
  line-height:1.7;
  margin-top:8px;
  text-align:center;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:0 0 24px;
  font-size:15px;
  border:1px solid var(--line);
  border-radius:10px;
  overflow:hidden;
}
.article-body thead th{
  background:var(--sand);
  color:var(--ink);
  font-weight:600;
  text-align:left;
  padding:12px 14px;
  border-bottom:1px solid var(--line);
}
.article-body tbody td{
  padding:12px 14px;
  border-bottom:1px solid var(--line);
  color:var(--text-2);
}
.article-body tbody tr:nth-child(even){background:#F6F4EE;}
.article-body tbody tr:last-child td{border-bottom:0;}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,"JetBrains Mono",monospace;
  font-size:14px;
  background:var(--sand);
  border-radius:6px;
  padding:2px 6px;
  color:var(--ink);
}
.article-body pre{
  background:var(--sand);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:18px 20px;
  overflow-x:auto;
  margin:0 0 24px;
}
.article-body pre code{background:none;padding:0;font-size:14px;line-height:1.8;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

/* ---------- 文末 ---------- */
.article-foot{
  border-top:1px solid var(--line);
  margin-top:56px;
  padding-top:36px;
  padding-bottom:72px;
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:56px;
  align-items:start;
}
.related-title{
  font-size:12px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--text-3);
  margin-bottom:18px;
}
.related-item{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:20px;
  padding:16px 0;
  border-bottom:1px solid var(--line);
  transition:padding-left .24s var(--ease),background .24s var(--ease);
}
.related-item:first-of-type{border-top:1px solid var(--line);}
.related-item:hover{padding-left:10px;background:var(--sand);}
.related-item .r-title{
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  transition:color .2s var(--ease);
}
.related-item:hover .r-title{color:var(--ink-deep);}
.related-item .r-date{
  font-family:var(--font-num);
  font-size:12px;
  color:var(--text-3);
  white-space:nowrap;
}
.related-back{margin-top:26px;}

.foot-side{
  background:var(--sand);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 24px;
}
.foot-side h3{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:10px;}
.foot-side p{font-size:14px;line-height:1.8;color:var(--text-2);margin-bottom:18px;}
.foot-side ul{margin-bottom:20px;}
.foot-side li{
  font-size:14px;
  color:var(--text-2);
  padding:8px 0;
  border-bottom:1px dashed var(--line);
  display:flex;
  gap:8px;
}
.foot-side li:last-child{border-bottom:0;}
.foot-side li span{color:var(--text-3);flex-shrink:0;}

/* ---------- 空态 ---------- */
.article-empty{
  border:1px dashed var(--line);
  border-radius:var(--r-card);
  background:#fff;
  padding:72px 24px;
  text-align:center;
  margin:56px 0 80px;
}
.article-empty h2{font-size:24px;font-weight:700;color:var(--ink);margin-bottom:12px;}
.article-empty p{font-size:15px;color:var(--text-2);margin-bottom:24px;}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(160deg,var(--ink) 0%,var(--ink-deep) 100%);
  color:var(--bg);
  padding:64px 0;
}
.cta-inner{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:40px;
  align-items:center;
}
.cta-band h2{
  font-size:32px;
  line-height:1.25;
  font-weight:800;
  letter-spacing:-.015em;
  margin-bottom:14px;
}
.cta-band p{
  font-size:15px;
  line-height:1.85;
  color:rgba(251,250,247,.72);
  max-width:620px;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-band .btn-primary{background:var(--lime);color:var(--ink);}
.cta-band .btn-primary:hover{background:var(--bg);color:var(--ink);}
.cta-band .btn-ghost{border-color:rgba(251,250,247,.42);color:var(--bg);}
.cta-band .btn-ghost:hover{background:var(--bg);color:var(--ink);border-color:var(--bg);}

/* ---------- Footer ---------- */
.site-footer{
  background:linear-gradient(180deg,var(--ink-deep) 0%,#050D08 100%);
  color:var(--bg);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:700;
  color:var(--bg);
  margin-bottom:16px;
}
.footer-brand svg{width:26px;height:26px;color:var(--lime);}
.footer-desc{
  font-size:14px;
  line-height:1.9;
  color:rgba(251,250,247,.62);
  max-width:340px;
}
.footer-col h3{
  font-size:13px;
  font-weight:600;
  letter-spacing:.12em;
  color:rgba(251,250,247,.5);
  margin-bottom:18px;
}
.footer-col li{margin-bottom:12px;font-size:14px;color:rgba(251,250,247,.72);}
.footer-col a{
  font-size:14px;
  color:rgba(251,250,247,.8);
  transition:color .2s var(--ease);
}
.footer-col a:hover{color:var(--lime);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  padding:22px 0 28px;
  border-top:1px solid rgba(251,250,247,.12);
  font-size:13px;
  color:rgba(251,250,247,.5);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 24px;}
  .article-layout{grid-template-columns:210px minmax(0,1fr);gap:40px;}
}
@media (max-width:1023px){
  :root{--header-h:60px;}
  .header-actions .search,.header-actions .btn{display:none;}
  .menu-toggle{display:flex;}
  .main-nav{
    position:fixed;
    top:var(--header-h);
    left:0;right:0;bottom:0;
    margin:0;
    background:var(--bg);
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:20px 20px 48px;
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-8px);
    transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s;
    border-top:1px solid var(--line);
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:none;}
  .nav-link{font-size:19px;font-weight:600;padding:16px 0;border-bottom:1px solid var(--line);}
  .nav-link::after{display:none;}
  .nav-link.is-active{color:var(--ink);}
  .nav-mobile-extra{display:flex;flex-direction:column;gap:16px;margin-top:26px;}
  .nav-mobile-extra .search{width:100%;height:46px;}
  .nav-mobile-extra .search:focus-within{width:100%;}
  .nav-mobile-extra .btn{width:100%;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;padding-top:32px;}
  .toc{display:none;}
  .article-foot{grid-template-columns:minmax(0,1fr);gap:36px;}
  .cta-inner{grid-template-columns:minmax(0,1fr);gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .breadcrumb{padding-top:20px;font-size:12px;}
  .article-head{padding:24px 0 28px;}
  .article-title{font-size:28px;line-height:1.24;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:22px;margin-top:36px;}
  .article-body h3{font-size:18px;}
  .article-foot{padding-bottom:56px;margin-top:40px;}
  .cta-band{padding:48px 0;}
  .cta-band h2{font-size:24px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;}
  .related-item{flex-direction:column;gap:6px;align-items:flex-start;}
  .article-empty{padding:52px 20px;margin:40px 0 56px;}
}
@media (max-width:480px){
  .brand-text{font-size:16px;}
  .article-title{font-size:24px;}
  .related-item .r-title{font-size:15px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --ink:#10231C;
  --ink-deep:#08150F;
  --lime:#C8F135;
  --paper:#FBFAF7;
  --sand:#EFECE4;
  --line:#DCD8CD;
  --text:#1A1C16;
  --muted:#5B5F55;
  --weak:#8A8E82;
  --ok:#2F7D5A;
  --warn:#B3261E;
  --info:#3A5A8C;
  --r-card:14px;
  --r-btn:12px;
  --r-input:10px;
  --shadow-card:0 14px 36px -18px rgba(16,35,28,.35);
  --ease:cubic-bezier(.22,1,.36,1);
  --container:1280px;
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Space Grotesk","Inter","HarmonyOS Sans SC",system-ui,sans-serif;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
svg{display:block}
::selection{background:var(--lime);color:var(--ink)}

/* ============ 容器与通用 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 40px;
}
.is-hidden{display:none !important}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
}

/* ============ 焦点与可访问性 ============ */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible{
  outline:2px solid var(--lime);
  outline-offset:2px;
  border-radius:4px;
}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  border:1px solid transparent;
  transition:background-color .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
  white-space:nowrap;
}
.btn svg{width:16px;height:16px;transition:transform .24s var(--ease)}
.btn-primary{background:var(--ink);color:#F5F3EC;border-color:var(--ink)}
.btn-primary:hover{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.btn-primary:hover svg{transform:translateX(4px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#F5F3EC}
.btn-ghost:hover svg{transform:translateX(4px)}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--ink);
  padding-bottom:2px;
  transition:border-color .24s var(--ease),color .24s var(--ease);
}
.btn-text:hover{border-color:var(--lime);color:var(--ink)}
.btn-text svg{width:15px;height:15px;transition:transform .24s var(--ease)}
.btn-text:hover svg{transform:translateX(4px)}

/* ============ 徽章与标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 10px;
  font-size:12px;font-weight:600;letter-spacing:.12em;
  color:var(--muted);
  background:var(--sand);
  border:1px solid var(--line);
  border-radius:4px;
  text-transform:uppercase;
}
.badge-lime{background:var(--lime);border-color:var(--lime);color:var(--ink)}
.tag{
  display:inline-flex;align-items:center;
  height:24px;padding:0 9px;
  font-size:12px;font-weight:500;
  color:var(--muted);
  border:1px solid var(--line);
  border-radius:999px;
  background:transparent;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease),background-color .3s var(--ease),backdrop-filter .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(251,250,247,.94);
  backdrop-filter:blur(6px);
  box-shadow:0 1px 0 rgba(16,35,28,.06),0 10px 30px -26px rgba(16,35,28,.5);
}
.header-inner{
  display:flex;align-items:center;gap:26px;
  height:72px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  color:var(--ink);
  font-size:18px;font-weight:700;letter-spacing:-.01em;
  flex-shrink:0;
}
.brand-mark{width:24px;height:24px;color:var(--ink)}
.brand-text{white-space:nowrap}
.main-nav{
  display:flex;align-items:center;gap:2px;
  margin-left:6px;
}
.nav-link{
  position:relative;
  padding:10px 12px;
  font-size:16px;font-weight:500;
  color:var(--muted);
  white-space:nowrap;
  transition:color .24s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;left:50%;right:50%;bottom:2px;height:2px;
  background:var(--ink);
  transition:left .24s var(--ease),right .24s var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{left:12px;right:12px}
.nav-link.is-active{color:var(--ink);font-weight:700}
.nav-link.is-active::after{left:12px;right:12px;background:var(--ink)}
.header-actions{
  margin-left:auto;
  display:flex;align-items:center;gap:12px;
  flex-shrink:0;
}
.search{position:relative;display:flex;align-items:center}
.search input{
  width:220px;height:40px;
  padding:0 38px 0 16px;
  border:1px solid var(--line);
  border-radius:999px;
  background:transparent;
  font-size:14px;
  color:var(--text);
  transition:width .3s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search input::placeholder{color:var(--weak)}
.search input:focus{
  width:300px;
  outline:none;
  border-color:var(--ink);
  box-shadow:0 0 0 3px rgba(200,241,53,.45);
}
.search svg{
  position:absolute;right:14px;
  width:16px;height:16px;color:var(--weak);
  pointer-events:none;
}
.nav-mobile-extra{display:none}
.menu-toggle{
  display:none;
  width:42px;height:42px;
  align-items:center;justify-content:center;
  flex-direction:column;gap:5px;
  border:1px solid var(--line);
  border-radius:10px;
  margin-left:10px;
}
.menu-toggle span{
  display:block;width:18px;height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .3s var(--ease),opacity .2s var(--ease);
}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--weak);
  padding:24px 0 0;
}
.breadcrumb a{color:var(--muted);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--ink)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--weak)}

/* ============ 首屏 ============ */
.page-hero{padding-bottom:0}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
  padding:44px 0 0;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;font-weight:600;letter-spacing:.14em;
  color:var(--muted);
  text-transform:uppercase;
}
.hero-eyebrow::before{
  content:"";width:26px;height:1px;background:var(--ink);
}
.hero-title{
  margin-top:18px;
  font-size:48px;
  line-height:1.12;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--ink);
}
.hero-title em{
  font-style:normal;
  display:inline-block;
  position:relative;
  z-index:0;
}
.hero-title em::after{
  content:"";
  position:absolute;left:0;right:0;bottom:6px;height:8px;
  background:var(--lime);
  z-index:-1;
  opacity:.9;
}
.hero-sub{
  margin-top:20px;
  font-size:17px;
  line-height:1.8;
  color:var(--muted);
  max-width:34em;
}
.hero-actions{
  display:flex;flex-wrap:wrap;gap:12px;
  margin-top:30px;
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-top:24px;
}
.hero-media{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  aspect-ratio:4/3;
  background:var(--sand);
}
.hero-media > img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .6s var(--ease);
}
.hero-media:hover > img{transform:scale(1.03)}
.hero-media::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(8,21,15,0) 38%,rgba(8,21,15,.55) 100%);
  z-index:1;
  pointer-events:none;
}
.hero-arc{
  position:absolute;top:-40px;right:-60px;
  width:260px;height:260px;
  color:rgba(251,250,247,.55);
  z-index:1;
  pointer-events:none;
}
.hero-float{
  position:absolute;left:20px;right:20px;bottom:20px;
  z-index:2;
  display:flex;align-items:center;gap:14px;
  padding:14px 16px;
  border-radius:12px;
  background:rgba(251,250,247,.94);
  border:1px solid rgba(220,216,205,.9);
  backdrop-filter:blur(6px);
}
.hero-float .hf-thumb{
  width:56px;height:56px;flex-shrink:0;
  border-radius:8px;overflow:hidden;
  border:1px solid var(--line);
}
.hero-float .hf-thumb img{width:100%;height:100%;object-fit:cover}
.hero-float .hf-text{min-width:0}
.hero-float .hf-title{
  font-size:14px;font-weight:600;color:var(--ink);
  line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.hero-float .hf-desc{
  margin-top:2px;
  font-size:12px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.hero-float .hf-arrow{
  margin-left:auto;flex-shrink:0;
  width:32px;height:32px;border-radius:50%;
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  color:var(--ink);
  transition:background-color .24s var(--ease),transform .24s var(--ease);
}
.hero-float:hover .hf-arrow{background:var(--lime);border-color:var(--lime);transform:translateX(3px)}
.hero-float .hf-arrow svg{width:14px;height:14px}

/* ============ 数据条 ============ */
.stats-strip{
  margin-top:56px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.stat{
  padding:26px 24px;
  border-right:1px solid var(--line);
}
.stat:last-child{border-right:0}
.stat-num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:44px;
  line-height:1;
  font-weight:700;
  letter-spacing:-.02em;
  color:var(--ink);
}
.stat-num small{
  font-size:18px;font-weight:600;margin-left:2px;letter-spacing:0;
}
.stat-label{
  margin-top:10px;
  font-size:13px;
  line-height:1.6;
  color:var(--muted);
}

/* ============ 锚点内容布局 ============ */
.content-layout{
  display:grid;
  grid-template-columns:240px 1fr;
  gap:64px;
  align-items:start;
  padding:80px 0 88px;
}
.anchor-nav{
  position:sticky;
  top:104px;
  border-left:1px solid var(--line);
}
.anchor-title{
  font-size:12px;font-weight:600;letter-spacing:.14em;
  color:var(--weak);
  padding-left:18px;margin-bottom:14px;
}
.anchor-link{
  display:block;
  padding:10px 0 10px 18px;
  margin-left:-1px;
  border-left:2px solid transparent;
  font-size:14px;
  color:var(--muted);
  transition:color .24s var(--ease),border-color .24s var(--ease),padding-left .24s var(--ease);
}
.anchor-link:hover{color:var(--ink);padding-left:22px}
.anchor-link.is-current{
  color:var(--ink);
  font-weight:700;
  border-left-color:var(--lime);
}
.content-sections{min-width:0}
.section-block{
  padding-bottom:60px;
  margin-bottom:60px;
  border-bottom:1px solid var(--line);
  scroll-margin-top:100px;
}
.section-block:last-child{padding-bottom:0;margin-bottom:0;border-bottom:0}
.section-kicker{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-num);
  font-size:12px;font-weight:600;letter-spacing:.14em;
  color:var(--weak);
}
.section-kicker::before{content:"";width:24px;height:1px;background:var(--ink)}
.section-title{
  margin-top:14px;
  font-size:32px;
  line-height:1.22;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink);
}
.section-text{
  margin-top:16px;
  font-size:16px;
  line-height:1.85;
  color:var(--muted);
  max-width:72ch;
}
.section-figure{
  margin-top:26px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  aspect-ratio:16/9;
  background:var(--sand);
}
.section-figure img{width:100%;height:100%;object-fit:cover}
.figure-cap{
  margin-top:10px;
  font-size:13px;
  color:var(--weak);
}
.mini-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px;
  margin-top:26px;
}
.mini-card{
  background:var(--sand);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),background-color .3s var(--ease);
}
.mini-card:hover{
  background:var(--paper);
  transform:translateY(-3px);
  box-shadow:var(--shadow-card);
}
.mini-card h4{
  font-size:17px;font-weight:600;color:var(--ink);
  margin-bottom:8px;
}
.mini-card p{
  font-size:14px;line-height:1.75;color:var(--muted);
}
.compare-list{
  margin-top:26px;
  border-top:1px solid var(--line);
}
.compare-row{
  display:grid;
  grid-template-columns:180px 1fr;
  gap:24px;
  padding:18px 0;
  border-bottom:1px solid var(--line);
}
.compare-key{
  font-size:15px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;gap:10px;
}
.compare-key::before{
  content:"";width:6px;height:6px;background:var(--ink);border-radius:1px;
  flex-shrink:0;
}
.compare-val{font-size:15px;line-height:1.8;color:var(--muted)}
.inline-points{
  margin-top:24px;
  display:grid;gap:12px;
}
.inline-points li{
  display:flex;gap:12px;
  font-size:15px;line-height:1.8;color:var(--muted);
}
.inline-points li::before{
  content:"";flex-shrink:0;
  width:14px;height:2px;margin-top:13px;
  background:var(--lime);
}

/* ============ 适用场景 ============ */
.scenario-section{
  background:var(--sand);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:88px 0;
}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
  margin-bottom:40px;
}
.section-head h2{
  font-size:36px;line-height:1.2;font-weight:700;
  letter-spacing:-.01em;color:var(--ink);
  margin-top:14px;
}
.section-head p{
  font-size:15px;line-height:1.8;color:var(--muted);
  max-width:34em;
}
.scenario-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.scenario-card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px 22px 26px;
  display:flex;flex-direction:column;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.scenario-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-card);
  border-color:var(--ink);
}
.scenario-card .sc-icon{
  width:38px;height:38px;
  border-radius:10px;
  background:var(--sand);
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  color:var(--ink);
  margin-bottom:16px;
}
.scenario-card .sc-icon svg{width:18px;height:18px}
.scenario-card h3{
  font-size:20px;line-height:1.35;font-weight:600;color:var(--ink);
}
.scenario-card p{
  margin-top:10px;
  font-size:14px;line-height:1.8;color:var(--muted);
  flex:1;
}
.scenario-card .sc-link{
  margin-top:18px;
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--ink);
}
.scenario-card .sc-link svg{width:14px;height:14px;transition:transform .24s var(--ease)}
.scenario-card:hover .sc-link svg{transform:translateX(4px)}

/* ============ 接入流程 ============ */
.process-section{padding:88px 0}
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
  margin-top:8px;
}
.step{
  padding:30px 26px 34px 0;
  border-right:1px solid var(--line);
  position:relative;
}
.step:last-child{border-right:0;padding-right:0}
.step-num{
  font-family:var(--font-num);
  font-size:13px;font-weight:600;letter-spacing:.14em;
  color:var(--weak);
}
.step h3{
  margin-top:12px;
  font-size:20px;line-height:1.35;font-weight:600;color:var(--ink);
}
.step p{
  margin-top:10px;
  font-size:14px;line-height:1.8;color:var(--muted);
  max-width:26ch;
}

/* ============ FAQ ============ */
.faq-section{
  padding:88px 0;
  background:var(--paper);
  border-top:1px solid var(--line);
}
.faq-layout{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:64px;
  align-items:start;
}
.faq-intro h2{
  font-size:36px;line-height:1.2;font-weight:700;
  letter-spacing:-.01em;color:var(--ink);
}
.faq-intro p{
  margin-top:16px;
  font-size:15px;line-height:1.85;color:var(--muted);
  max-width:30ch;
}
.faq-intro .btn{margin-top:28px}
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:64px;
  padding:14px 0;
  list-style:none;
  cursor:pointer;
  font-size:17px;font-weight:600;line-height:1.5;
  color:var(--ink);
  transition:color .24s var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";
  font-size:22px;font-weight:400;line-height:1;
  color:var(--muted);
  flex-shrink:0;
  transition:transform .3s var(--ease),color .24s var(--ease);
}
.faq details[open] summary::after{transform:rotate(45deg);color:var(--ink)}
.faq summary:hover{color:var(--ink)}
.faq-body{
  padding:0 0 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
  max-width:72ch;
}

/* ============ 转化区 ============ */
.cta-band{
  background:linear-gradient(180deg,var(--ink) 0%,var(--ink-deep) 100%);
  color:#F2F0E8;
  padding:88px 0;
}
.cta-grid{
  display:grid;
  grid-template-columns:6fr 6fr;
  gap:64px;
  align-items:start;
}
.cta-kicker{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-num);
  font-size:12px;font-weight:600;letter-spacing:.14em;
  color:rgba(242,240,232,.62);
}
.cta-kicker::before{content:"";width:24px;height:1px;background:var(--lime)}
.cta-title{
  margin-top:16px;
  font-size:40px;line-height:1.18;font-weight:800;
  letter-spacing:-.02em;
  color:#F7F6F0;
}
.cta-desc{
  margin-top:18px;
  font-size:16px;line-height:1.85;
  color:rgba(242,240,232,.76);
  max-width:34em;
}
.cta-points{margin-top:26px;display:grid;gap:12px}
.cta-points li{
  display:flex;gap:12px;
  font-size:15px;line-height:1.7;
  color:rgba(242,240,232,.86);
}
.cta-points li::before{
  content:"";flex-shrink:0;
  width:16px;height:2px;margin-top:12px;
  background:var(--lime);
}
.cta-form{
  background:var(--paper);
  border-radius:var(--r-card);
  padding:30px;
  color:var(--text);
  border:1px solid rgba(220,216,205,.5);
}
.form-title{
  font-size:20px;font-weight:700;color:var(--ink);
}
.form-tip{
  margin-top:6px;
  font-size:13px;line-height:1.7;color:var(--weak);
}
.field{margin-top:18px}
.field label{
  display:block;
  font-size:13px;font-weight:600;color:var(--muted);
  margin-bottom:8px;
}
.field input,
.field select,
.field textarea{
  width:100%;
  border:1px solid var(--line);
  border-radius:var(--r-input);
  background:transparent;
  padding:12px 14px;
  font-size:15px;
  color:var(--text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field input::placeholder,
.field textarea::placeholder{color:var(--weak)}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--ink);
  background:var(--paper);
  box-shadow:0 0 0 3px rgba(200,241,53,.45);
}
.field select{appearance:none;background-image:none;cursor:pointer}
.form-submit{
  width:100%;
  margin-top:22px;
}
.form-note{
  margin-top:12px;
  font-size:12px;line-height:1.7;color:var(--weak);
}
.form-success{
  margin-top:16px;
  padding:12px 14px;
  border-radius:10px;
  background:rgba(47,125,90,.1);
  border:1px solid rgba(47,125,90,.35);
  color:var(--ok);
  font-size:14px;
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-deep);
  color:rgba(242,240,232,.78);
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:56px;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  color:#F7F6F0;
  font-size:18px;font-weight:700;
}
.footer-brand svg{width:24px;height:24px;color:var(--lime)}
.footer-desc{
  margin-top:16px;
  font-size:14px;line-height:1.85;
  color:rgba(242,240,232,.62);
  max-width:34ch;
}
.footer-col h3{
  font-size:13px;font-weight:600;letter-spacing:.14em;
  color:rgba(242,240,232,.5);
  margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px}
.footer-col li{
  font-size:14px;line-height:1.7;
  color:rgba(242,240,232,.7);
}
.footer-col a{
  color:rgba(242,240,232,.7);
  transition:color .24s var(--ease);
}
.footer-col a:hover{color:var(--lime)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:22px 0 28px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:rgba(242,240,232,.5);
}

/* ============ 进场动效 ============ */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ============ 断点：小桌面 ============ */
@media (max-width:1279px){
  .container{padding:0 24px}
  .hero-grid{gap:40px}
  .hero-title{font-size:44px}
  .content-layout{gap:48px}
  .faq-layout,.cta-grid{gap:44px}
}

/* ============ 断点：平板 ============ */
@media (max-width:1023px){
  .container{padding:0 24px}
  .header-inner{height:60px;gap:12px}
  .header-actions{display:none}
  .menu-toggle{display:inline-flex}
  .main-nav{
    position:fixed;
    top:60px;left:0;right:0;bottom:0;
    z-index:70;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin:0;
    padding:20px 24px 40px;
    background:var(--paper);
    border-top:1px solid var(--line);
    overflow-y:auto;
    transform:translateX(100%);
    transition:transform .32s var(--ease);
  }
  .main-nav.is-open{transform:none}
  .nav-link{
    padding:16px 4px;
    font-size:19px;
    border-bottom:1px solid var(--line);
  }
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--ink)}
  .nav-mobile-extra{display:block;margin-top:26px}
  .nav-mobile-extra .search input{width:100%}
  .nav-mobile-extra .search input:focus{width:100%}
  .nav-mobile-extra .btn{width:100%;margin-top:14px}

  .hero-grid{grid-template-columns:1fr;gap:32px;padding-top:32px}
  .hero-title{font-size:38px}
  .hero-media{aspect-ratio:16/10}
  .stats-strip{grid-template-columns:repeat(2,1fr);margin-top:40px}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}
  .stat-num{font-size:38px}

  .content-layout{grid-template-columns:1fr;gap:0;padding:56px 0 64px}
  .anchor-nav{
    position:static;
    border-left:0;
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    padding:16px 0;
    display:flex;flex-wrap:wrap;gap:8px;
    margin-bottom:40px;
  }
  .anchor-title{display:none}
  .anchor-link{
    padding:8px 14px;
    margin:0;
    border:1px solid var(--line);
    border-radius:999px;
    font-size:13px;
  }
  .anchor-link:hover{padding-left:14px;border-color:var(--ink)}
  .anchor-link.is-current{border-color:var(--ink);border-left-color:var(--ink);background:var(--sand)}

  .section-title{font-size:27px}
  .scenario-section,.process-section,.faq-section,.cta-band{padding:64px 0}
  .section-head h2,.faq-intro h2{font-size:28px}
  .scenario-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step{border-right:1px solid var(--line);padding:26px 22px 30px 0}
  .step:nth-child(2n){border-right:0;padding-right:0}
  .step:nth-child(1),.step:nth-child(2){border-bottom:1px solid var(--line)}
  .step:nth-child(3),.step:nth-child(4){border-bottom:0}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-intro p{max-width:none}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .cta-title{font-size:32px}

  .footer-grid{grid-template-columns:repeat(2,1fr);gap:36px;padding-bottom:44px}
}

/* ============ 断点：手机 ============ */
@media (max-width:767px){
  .container{padding:0 20px}
  .brand-text{font-size:16px}
  .breadcrumb{padding-top:18px;font-size:12px}
  .hero-title{font-size:32px;line-height:1.2}
  .hero-sub{font-size:16px;margin-top:16px}
  .hero-actions{margin-top:24px}
  .hero-actions .btn{flex:1 1 auto}
  .hero-media{aspect-ratio:auto;height:280px}
  .hero-float{left:12px;right:12px;bottom:12px;padding:12px}
  .hero-float .hf-thumb{width:46px;height:46px}
  .stat{padding:20px 16px}
  .stat-num{font-size:32px}
  .stat-label{font-size:12px}

  .mini-grid{grid-template-columns:1fr}
  .compare-row{grid-template-columns:1fr;gap:6px}
  .scenario-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .step{border-right:0;border-bottom:1px solid var(--line);padding:24px 0}
  .step:last-child{border-bottom:0}
  .step p{max-width:none}

  .section-block{padding-bottom:44px;margin-bottom:44px}
  .section-title{font-size:25px}
  .section-text{font-size:15px}
  .section-figure{aspect-ratio:4/3}

  .faq summary{font-size:16px;min-height:58px;gap:16px}
  .cta-title{font-size:28px}
  .cta-form{padding:24px 20px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* ============ 断点：小屏 ============ */
@media (max-width:520px){
  .hero-title{font-size:28px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .stats-strip{grid-template-columns:1fr}
  .stat{border-right:0;border-bottom:1px solid var(--line)}
  .stat:last-child{border-bottom:0}
  .stat:nth-child(2){border-right:0}
  .cta-title{font-size:25px}
  .section-head h2,.faq-intro h2{font-size:24px}
}

/* ============ 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;
  }
  .reveal{opacity:1 !important;transform:none !important}
  .hero-media:hover > img{transform:none}
  .scenario-card:hover,.mini-card:hover{transform:none}
}

/* roulang page: category2 */
:root{
  --ink:#10231C;
  --ink-deep:#08150F;
  --lime:#C8F135;
  --paper:#FBFAF7;
  --sand:#EFECE4;
  --line:#DCD8CD;
  --text:#1A1C16;
  --text-2:#5B5F55;
  --text-3:#8A8E82;
  --ok:#2F7D5A;
  --warn:#B3261E;
  --info:#3A5A8C;
  --radius-card:14px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow-card:0 14px 36px -18px rgba(16,35,28,.35);
  --ease:cubic-bezier(.22,1,.36,1);
  --maxw:1280px;
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Space Grotesk","Inter","HarmonyOS Sans SC","PingFang SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,figure,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
::selection{background:var(--lime);color:var(--ink)}
svg{display:block}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 40px}
.section{padding:96px 0}
.section-tight{padding:64px 0}

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;
  padding:13px 22px;cursor:pointer;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.btn svg{width:18px;height:18px;transition:transform .24s var(--ease)}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--lime);color:var(--ink)}
.btn-primary:hover svg{transform:translateX(4px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn-ghost:hover svg{transform:translateX(4px)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-block{width:100%}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--ink);
  padding-bottom:4px;border-bottom:1px solid var(--line);
  transition:border-color .24s var(--ease),color .24s var(--ease);
}
.btn-text svg{width:16px;height:16px;transition:transform .24s var(--ease)}
.btn-text:hover{border-color:var(--lime)}
.btn-text:hover svg{transform:translateX(4px)}

.badge{
  display:inline-flex;align-items:center;
  padding:4px 10px;border:1px solid var(--line);border-radius:999px;
  background:var(--sand);color:var(--text-2);
  font-size:12px;font-weight:600;letter-spacing:.08em;line-height:1.5;
}
.badge-accent{background:var(--lime);border-color:var(--lime);color:var(--ink)}

.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  flex-wrap:wrap;margin-bottom:44px;
}
.sec-label{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--text-3);text-transform:uppercase;margin-bottom:14px;
  font-family:var(--font-num);
}
.sec-label.light{color:rgba(251,250,247,.55)}
.sec-head h2{font-size:36px;line-height:1.2;font-weight:700;letter-spacing:-.01em;color:var(--ink)}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease),background .3s var(--ease),backdrop-filter .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(251,250,247,.9);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  box-shadow:0 1px 0 rgba(16,35,28,.06);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-size:18px;font-weight:700;letter-spacing:-.01em;flex-shrink:0}
.brand-mark{width:24px;height:24px;flex:0 0 auto}
.main-nav{display:flex;align-items:center;gap:2px}
.nav-link{
  position:relative;padding:8px 12px;
  font-size:16px;font-weight:500;color:var(--text-2);white-space:nowrap;
  transition:color .24s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:0;height:2px;width:0;
  background:var(--ink);transform:translateX(-50%);
  transition:width .24s var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{width:calc(100% - 24px)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{width:calc(100% - 24px)}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.search{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;background:var(--paper);
  transition:border-color .24s var(--ease),width .28s var(--ease);
}
.search input{
  width:150px;border:0;background:transparent;outline:none;
  font-size:14px;transition:width .28s var(--ease);
}
.search input::placeholder{color:var(--text-3)}
.search svg{width:16px;height:16px;color:var(--text-3);flex:0 0 auto}
.search:focus-within{border-color:var(--ink)}
.search:focus-within input{width:210px}
.nav-mobile-extra{display:none}
.menu-toggle{
  display:none;width:40px;height:40px;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border:1px solid var(--line);border-radius:10px;background:transparent;cursor:pointer;
}
.menu-toggle span{display:block;width:18px;height:1.6px;background:var(--ink);transition:transform .3s var(--ease),opacity .3s var(--ease)}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.6px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg)}

/* ============ 首屏 ============ */
.page-hero{position:relative;overflow:hidden;padding:56px 0 72px;border-bottom:1px solid var(--line)}
.page-hero::before{
  content:"";position:absolute;top:0;right:0;width:48%;height:100%;
  background:url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  opacity:.13;pointer-events:none;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 45%);
  mask-image:linear-gradient(90deg,transparent,#000 45%);
}
.breadcrumb{position:relative;z-index:1;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:36px}
.breadcrumb a{transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--ink)}
.breadcrumb .current{color:var(--text-2)}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--text-2);
  font-family:var(--font-num);text-transform:uppercase;margin-bottom:18px;
}
.eyebrow-dot{width:7px;height:7px;border-radius:999px;background:var(--lime);box-shadow:0 0 0 3px rgba(200,241,53,.24)}
.hero-copy h1{
  font-size:48px;line-height:1.12;font-weight:800;letter-spacing:-.02em;
  color:var(--ink);max-width:15em;
}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.78;color:var(--text-2);max-width:34em}
.filter-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
.chip{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;
  border:1px solid var(--line);border-radius:999px;background:transparent;
  color:var(--text-2);font-size:14px;font-weight:500;cursor:pointer;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.chip:hover{border-color:var(--ink);color:var(--ink)}
.chip.is-active{background:var(--ink);border-color:var(--ink);color:var(--paper);font-weight:600}
.hero-media{
  position:relative;margin:0;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--sand);aspect-ratio:4/3;
}
.hero-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.hero-media:hover img{transform:scale(1.03)}
.hero-media figcaption{
  position:absolute;left:16px;right:16px;bottom:16px;
  display:flex;flex-direction:column;align-items:flex-start;gap:8px;
  padding:14px 16px;border-radius:12px;
  background:rgba(251,250,247,.94);
  border:1px solid var(--line);
}
.hero-media figcaption p{font-size:13.5px;line-height:1.6;color:var(--ink);font-weight:600}

/* ============ 锯齿式内容块 ============ */
.zig-item{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.zig-item + .zig-item{margin-top:76px}
.zig-item.is-reverse .zig-media{order:2}
.zig-media{
  position:relative;margin:0;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--sand);aspect-ratio:16/10;
}
.zig-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.zig-item:hover .zig-media img{transform:scale(1.03)}
.zig-media .badge{position:absolute;top:14px;left:14px}
.zig-body .num{
  display:block;font-family:var(--font-num);
  font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--text-3);
  margin-bottom:14px;
}
.zig-body h3{font-size:26px;line-height:1.35;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.zig-body p{margin-top:14px;font-size:16px;line-height:1.8;color:var(--text-2);max-width:34em}
.check-list{display:grid;gap:10px;margin:24px 0 28px}
.check-list li{
  position:relative;padding-left:22px;
  font-size:15px;line-height:1.7;color:var(--text-2);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:11px;height:2px;background:var(--ink);border-radius:1px;
}

/* ============ 数据条 ============ */
.stats-band{background:var(--sand);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:64px 0}
.stats-title{font-size:20px;font-weight:700;color:var(--ink);margin-bottom:36px;letter-spacing:-.01em}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:0 32px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0;padding-left:0}
.stat:last-child{padding-right:0}
.stat-num{
  display:flex;align-items:baseline;gap:4px;
  font-family:var(--font-num);font-size:clamp(40px,4.4vw,62px);font-weight:700;
  line-height:1;color:var(--ink);letter-spacing:-.02em;
}
.stat-num span{font-size:16px;font-weight:600;color:var(--text-2);letter-spacing:0}
.stat-label{margin-top:14px;font-size:14px;line-height:1.7;color:var(--text-2)}

/* ============ 流程 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{border-top:2px solid var(--ink);padding-top:22px}
.step-num{
  display:block;font-family:var(--font-num);font-size:12px;font-weight:700;
  letter-spacing:.16em;color:var(--text-3);margin-bottom:12px;
}
.step h3{font-size:18px;font-weight:700;color:var(--ink);line-height:1.4}
.step p{margin-top:10px;font-size:15px;line-height:1.75;color:var(--text-2)}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.faq-intro h2{font-size:36px;line-height:1.2;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.faq-intro p{margin-top:16px;font-size:16px;line-height:1.8;color:var(--text-2);max-width:26em}
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:64px;padding:18px 0;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;
  transition:color .2s var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--ok)}
.faq summary::after{
  content:"";flex:0 0 auto;width:14px;height:14px;
  background:
    linear-gradient(var(--ink),var(--ink)) center/14px 1.6px no-repeat,
    linear-gradient(var(--ink),var(--ink)) center/1.6px 14px no-repeat;
  transition:transform .3s var(--ease);
}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq-a{padding:0 0 24px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:46em}

/* ============ CTA ============ */
.cta{
  background:linear-gradient(180deg,var(--ink) 0%,var(--ink-deep) 100%);
  color:var(--paper);padding:80px 0;
}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.cta-copy h2{font-size:36px;line-height:1.22;font-weight:700;letter-spacing:-.01em;color:var(--paper);max-width:13em}
.cta-copy p{margin-top:18px;font-size:16px;line-height:1.8;color:rgba(251,250,247,.72);max-width:30em}
.cta-list{display:grid;gap:12px;margin-top:28px}
.cta-list li{position:relative;padding-left:24px;font-size:15px;line-height:1.7;color:rgba(251,250,247,.86)}
.cta-list li::before{content:"";position:absolute;left:0;top:11px;width:12px;height:2px;background:var(--lime)}
.form-card{
  background:var(--paper);color:var(--text);
  border-radius:var(--radius-card);padding:32px;
  border:1px solid rgba(251,250,247,.16);
}
.form-card h3{font-size:20px;font-weight:700;color:var(--ink);margin-bottom:6px}
.form-card .form-note{font-size:13px;color:var(--text-3);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--text-2);margin-bottom:8px;letter-spacing:.02em}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;
  border:1px solid var(--line);border-radius:var(--radius-input);
  background:var(--paper);font-size:15px;outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{resize:vertical;min-height:96px;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--ink);box-shadow:0 0 0 3px rgba(200,241,53,.4);
}
.field input:disabled,.field select:disabled,.field textarea:disabled{
  background:var(--sand);color:var(--text-3);cursor:not-allowed;
}
.form-msg{
  display:none;margin-top:14px;padding:11px 14px;border-radius:10px;
  font-size:14px;line-height:1.6;
  background:rgba(47,125,90,.1);border:1px solid rgba(47,125,90,.32);color:var(--ok);
}
.form-msg.is-visible{display:block}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-deep);color:var(--paper);padding:72px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--paper);margin-bottom:16px}
.footer-brand svg{width:24px;height:24px}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(251,250,247,.6);max-width:26em}
.footer-col h3{font-size:13px;font-weight:700;letter-spacing:.12em;color:rgba(251,250,247,.5);margin-bottom:18px}
.footer-col ul{display:grid;gap:11px}
.footer-col li{font-size:14px;line-height:1.7;color:rgba(251,250,247,.72)}
.footer-col a{font-size:14px;color:rgba(251,250,247,.72);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--lime)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:52px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;line-height:1.7;color:rgba(251,250,247,.5);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero-grid{gap:40px}
  .stat{padding:0 24px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .header-inner{height:64px}
  .main-nav{
    position:fixed;top:64px;left:0;right:0;bottom:0;
    flex-direction:column;align-items:flex-start;gap:0;
    padding:20px 24px 40px;background:var(--paper);
    overflow-y:auto;display:none;z-index:95;
  }
  .main-nav.is-open{display:flex}
  .nav-link{width:100%;padding:15px 0;font-size:17px;border-bottom:1px solid var(--line)}
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--ink);font-weight:700}
  .header-actions .search,.header-actions .btn{display:none}
  .menu-toggle{display:flex}
  .nav-mobile-extra{display:flex;flex-direction:column;gap:14px;width:100%;margin-top:24px}
  .nav-mobile-extra .search{width:100%;height:46px}
  .nav-mobile-extra .search input{width:100%}
  .nav-mobile-extra .search:focus-within input{width:100%}
  .nav-mobile-extra .btn{width:100%}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-copy h1{font-size:38px;max-width:none}
  .hero-media{aspect-ratio:16/9}
  .zig-item{grid-template-columns:1fr;gap:28px}
  .zig-item.is-reverse .zig-media{order:0}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:32px 0}
  .stat{border-left:0;padding:0}
  .stat:nth-child(even){padding-left:28px;border-left:1px solid var(--line)}
  .steps{grid-template-columns:repeat(2,1fr);gap:32px 24px}
  .faq-grid{grid-template-columns:1fr;gap:32px}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .sec-head h2,.faq-intro h2,.cta-copy h2{font-size:28px}
  .page-hero::before{width:70%;opacity:.09}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-tight{padding:44px 0}
  .brand-text{font-size:16px}
  .page-hero{padding:36px 0 48px}
  .breadcrumb{margin-bottom:24px}
  .hero-copy h1{font-size:32px;line-height:1.2}
  .hero-sub{font-size:16px;margin-top:16px}
  .filter-tabs{margin-top:24px;gap:8px}
  .chip{height:34px;padding:0 14px;font-size:13px}
  .hero-media{aspect-ratio:4/3;min-height:240px}
  .zig-body h3{font-size:21px}
  .zig-item + .zig-item{margin-top:56px}
  .stats-band{padding:48px 0}
  .stats-grid{grid-template-columns:1fr;gap:28px}
  .stat:nth-child(even){padding-left:0;border-left:0}
  .stat + .stat{border-top:1px solid var(--line);padding-top:24px}
  .steps{grid-template-columns:1fr;gap:26px}
  .sec-head h2,.faq-intro h2,.cta-copy h2{font-size:24px}
  .cta{padding:56px 0}
  .form-card{padding:22px}
  .faq summary{font-size:16px;min-height:58px;gap:16px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{margin-top:36px;flex-direction:column;align-items:flex-start}
  .site-footer{padding:52px 0 28px}
}
@media (max-width:480px){
  .hero-copy h1{font-size:27px}
  .hero-media figcaption{left:10px;right:10px;bottom:10px;padding:11px 12px}
  .hero-media figcaption p{font-size:12.5px}
  .btn{width:100%}
  .sec-head .btn-text{width:auto}
}

/* ============ 动效降级 ============ */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --ink:#10231C;
  --ink-deep:#08150F;
  --lime:#C8F135;
  --bg:#FBFAF7;
  --sand:#EFECE4;
  --line:#DCD8CD;
  --text:#1A1C16;
  --muted:#5B5F55;
  --faint:#8A8E82;
  --ok:#2F7D5A;
  --warn:#B3261E;
  --info:#3A5A8C;
  --r-card:14px;
  --r-input:10px;
  --r-btn:12px;
  --shadow-card:0 14px 36px -18px rgba(16,35,28,.35);
  --shadow-soft:0 1px 0 rgba(16,35,28,.06);
  --ease:cubic-bezier(.22,1,.36,1);
  --sp-section:clamp(56px,6vw,96px);
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --font-num:"Space Grotesk","Inter","HarmonyOS Sans SC","PingFang SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
svg{display:block}
::selection{background:var(--lime);color:var(--ink)}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}
.container{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 40px;
}
.section{padding:var(--sp-section) 0}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-num);
  font-size:12px;
  font-weight:600;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--muted);
}
.eyebrow::before{
  content:"";
  width:26px;
  height:1px;
  background:var(--ink);
  display:block;
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
  padding-bottom:20px;
  border-bottom:1px solid var(--line);
}
.section-head h2{
  font-size:clamp(26px,2.6vw,36px);
  line-height:1.2;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink);
  margin-top:12px;
}
.section-head .head-note{
  font-size:14px;
  color:var(--muted);
  max-width:360px;
  text-align:right;
}
/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  transition:background .28s var(--ease),color .28s var(--ease),border-color .28s var(--ease),transform .28s var(--ease);
  white-space:nowrap;
}
.btn svg{width:18px;height:18px;transition:transform .28s var(--ease)}
.btn-primary{background:var(--ink);color:#FBFAF7}
.btn-primary:hover{background:var(--lime);color:var(--ink)}
.btn-primary:hover svg{transform:translateX(4px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#FBFAF7}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  border-bottom:1px solid var(--ink);
  padding-bottom:3px;
  transition:border-color .24s var(--ease),color .24s var(--ease);
}
.btn-text:hover{border-color:var(--lime);color:var(--ink)}
.btn-text svg{width:16px;height:16px;transition:transform .28s var(--ease)}
.btn-text:hover svg{transform:translateX(3px)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed}
/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease),backdrop-filter .3s var(--ease);
}
.site-header.is-scrolled{
  box-shadow:var(--shadow-soft);
  backdrop-filter:blur(6px);
  background:rgba(251,250,247,.92);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{width:24px;height:24px;color:var(--ink)}
.brand-text{
  font-size:18px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:-.01em;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:12px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:72px;
  padding:0 12px;
  font-size:16px;
  font-weight:500;
  color:var(--muted);
  transition:color .24s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:14px;
  width:0;
  height:2px;
  background:var(--ink);
  transform:translateX(-50%);
  transition:width .24s var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{width:20px}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{width:20px}
.nav-mobile-extra{display:none}
.header-actions{
  display:flex;
  align-items:center;
  gap:14px;
  margin-left:auto;
}
.search{
  position:relative;
  display:flex;
  align-items:center;
}
.search input{
  width:220px;
  height:40px;
  padding:0 38px 0 16px;
  border:1px solid var(--line);
  border-radius:999px;
  background:#fff;
  font-size:14px;
  color:var(--text);
  transition:width .3s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.search input::placeholder{color:var(--faint)}
.search input:focus{
  outline:none;
  width:300px;
  border-color:var(--ink);
  box-shadow:0 0 0 3px rgba(200,241,53,.35);
}
.search svg{
  position:absolute;
  right:14px;
  width:16px;
  height:16px;
  color:var(--faint);
  pointer-events:none;
}
.menu-toggle{
  display:none;
  width:40px;
  height:40px;
  border:1px solid var(--line);
  border-radius:10px;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
}
.menu-toggle span{
  display:block;
  width:18px;
  height:1.6px;
  background:var(--ink);
  transition:transform .3s var(--ease),opacity .3s var(--ease);
}
body.nav-open .menu-toggle span:nth-child(1){transform:translateY(5.6px) rotate(45deg)}
body.nav-open .menu-toggle span:nth-child(2){opacity:0}
body.nav-open .menu-toggle span:nth-child(3){transform:translateY(-5.6px) rotate(-45deg)}
/* ---------- hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:var(--sand);
}
.page-hero::after{
  content:"";
  position:absolute;
  top:0;
  right:0;
  width:52%;
  height:100%;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  opacity:.5;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 62%);
  mask-image:linear-gradient(90deg,transparent,#000 62%);
}
.page-hero .container{position:relative;z-index:2}
.hero-inner{
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);
  gap:48px;
  align-items:end;
  padding:64px 0 0;
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  padding-top:24px;
}
.breadcrumb a{transition:color .24s var(--ease)}
.breadcrumb a:hover{color:var(--ink)}
.breadcrumb span.sep{color:var(--faint)}
.breadcrumb .current{color:var(--faint)}
.hero-copy h1{
  font-size:clamp(32px,4.4vw,48px);
  line-height:1.14;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--ink);
  margin:20px 0 0;
}
.hero-copy h1 em{
  font-style:normal;
  position:relative;
  white-space:nowrap;
}
.hero-copy h1 em::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:6px;
  height:8px;
  background:var(--lime);
  z-index:-1;
}
.hero-copy p.lead{
  margin-top:18px;
  font-size:17px;
  line-height:1.75;
  color:var(--muted);
  max-width:620px;
}
.hero-count{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:var(--lime);
  color:var(--ink);
  font-size:12px;
  font-weight:600;
  letter-spacing:.06em;
  margin-top:22px;
}
.hero-count b{font-family:var(--font-num);font-size:14px}
.hero-side{
  padding-bottom:24px;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.hero-side .side-card{
  background:rgba(251,250,247,.86);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:20px 22px;
  backdrop-filter:blur(4px);
}
.hero-side .side-card h2{
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:8px;
}
.hero-side .side-card p{
  font-size:14px;
  line-height:1.7;
  color:var(--muted);
}
.hero-side .side-card a{margin-top:12px}
/* stats */
.stat-bar{
  margin-top:52px;
  border-top:1px solid rgba(16,35,28,.18);
  display:grid;
  grid-template-columns:repeat(3,1fr);
}
.stat-bar .stat{
  padding:24px 0 28px;
  border-right:1px solid rgba(16,35,28,.14);
  padding-left:2px;
}
.stat-bar .stat:last-child{border-right:0}
.stat-bar .stat:nth-child(2),.stat-bar .stat:nth-child(3){padding-left:32px}
.stat-num{
  font-family:var(--font-num);
  font-size:clamp(34px,4vw,52px);
  font-weight:700;
  line-height:1;
  color:var(--ink);
  letter-spacing:-.02em;
}
.stat-num small{font-size:14px;font-weight:600;margin-left:6px;letter-spacing:0}
.stat-label{
  display:block;
  margin-top:10px;
  font-size:13px;
  color:var(--muted);
}
/* ---------- list section ---------- */
.list-section{padding-top:var(--sp-section)}
.filter-tabs{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:8px;
}
.tab{
  height:38px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:transparent;
  font-size:14px;
  font-weight:500;
  color:var(--muted);
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.tab:hover{border-color:var(--ink);color:var(--ink)}
.tab[aria-pressed="true"]{
  background:var(--ink);
  border-color:var(--ink);
  color:#FBFAF7;
}
.list-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  column-gap:56px;
  margin-top:24px;
}
.list-row{
  display:grid;
  grid-template-columns:52px minmax(0,1fr) auto;
  gap:16px;
  align-items:start;
  padding:22px 14px 22px 0;
  border-bottom:1px solid var(--line);
  transition:background .24s var(--ease),padding .24s var(--ease);
}
.list-row:hover{background:var(--sand);padding-left:14px;padding-right:18px}
.list-row.is-hidden{display:none}
.row-num{
  font-family:var(--font-num);
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--faint);
  padding-top:4px;
}
.row-main h3{
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  line-height:1.4;
  transition:color .24s var(--ease);
}
.list-row:hover .row-main h3{color:var(--ink-deep)}
.row-main p{
  margin-top:6px;
  font-size:14px;
  line-height:1.7;
  color:var(--muted);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.row-meta{
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:6px;
  padding-top:2px;
}
.tag{
  display:inline-flex;
  align-items:center;
  height:22px;
  padding:0 9px;
  border:1px solid var(--line);
  border-radius:3px;
  background:var(--sand);
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--muted);
  white-space:nowrap;
}
.tag.is-lime{background:var(--lime);border-color:var(--lime);color:var(--ink)}
.tag.is-ink{background:var(--ink);border-color:var(--ink);color:#FBFAF7}
.tag.is-ok{background:transparent;border-color:rgba(47,125,90,.4);color:var(--ok)}
.empty-state{
  margin-top:28px;
  border:1px dashed var(--line);
  border-radius:var(--r-card);
  padding:52px 24px;
  text-align:center;
  color:var(--muted);
  background:rgba(239,236,228,.4);
}
.empty-state h3{font-size:17px;font-weight:600;color:var(--ink);margin-bottom:8px}
.empty-state p{font-size:14px;margin-bottom:18px}
.list-note{
  margin-top:28px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 28px;
  font-size:13px;
  color:var(--faint);
}
.list-note span{display:inline-flex;align-items:center;gap:8px}
.list-note span::before{
  content:"";
  width:6px;
  height:6px;
  background:var(--lime);
  display:block;
  border-radius:1px;
}
/* ---------- path section ---------- */
.path-section{background:var(--sand);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.path-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:64px;
  align-items:center;
}
.path-figure{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:4/3;
  background:var(--ink);
}
.path-figure img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .6s var(--ease);
}
.path-figure:hover img{transform:scale(1.03)}
.path-figure .figure-badge{
  position:absolute;
  left:18px;
  top:18px;
  z-index:2;
}
.steps{display:flex;flex-direction:column;gap:0;margin-top:28px}
.step{
  display:grid;
  grid-template-columns:44px minmax(0,1fr);
  gap:18px;
  padding:22px 0;
  border-top:1px solid rgba(16,35,28,.14);
}
.step:last-child{border-bottom:1px solid rgba(16,35,28,.14)}
.step-idx{
  font-family:var(--font-num);
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--ink);
  border:1px solid rgba(16,35,28,.24);
  border-radius:999px;
  width:36px;
  height:36px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(251,250,247,.7);
}
.step h3{font-size:17px;font-weight:600;color:var(--ink);margin-bottom:6px}
.step p{font-size:14px;line-height:1.75;color:var(--muted)}
/* ---------- faq ---------- */
.faq-grid{
  display:grid;
  grid-template-columns:minmax(0,.42fr) minmax(0,.58fr);
  gap:56px;
  align-items:start;
}
.faq-intro h2{
  font-size:clamp(26px,2.6vw,36px);
  line-height:1.2;
  font-weight:700;
  color:var(--ink);
  letter-spacing:-.01em;
  margin-top:12px;
}
.faq-intro p{
  margin-top:16px;
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
  max-width:320px;
}
.faq-intro .btn-text{margin-top:24px}
.faq-list details{
  border-bottom:1px solid var(--line);
}
.faq-list details:first-child{border-top:1px solid var(--line)}
.faq-list summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:64px;
  padding:14px 0;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
  list-style:none;
  transition:color .24s var(--ease);
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:hover{color:var(--ink-deep)}
.faq-list summary .plus{
  position:relative;
  flex-shrink:0;
  width:22px;
  height:22px;
  border:1px solid var(--line);
  border-radius:999px;
  transition:transform .3s var(--ease),background .3s var(--ease),border-color .3s var(--ease);
}
.faq-list summary .plus::before,
.faq-list summary .plus::after{
  content:"";
  position:absolute;
  top:50%;
  left:50%;
  background:var(--ink);
  transform:translate(-50%,-50%);
}
.faq-list summary .plus::before{width:10px;height:1.5px}
.faq-list summary .plus::after{width:1.5px;height:10px}
.faq-list details[open] summary .plus{transform:rotate(45deg);background:var(--lime);border-color:var(--lime)}
.faq-list .answer{
  padding:0 0 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
  max-width:640px;
}
/* ---------- cta ---------- */
.cta-section{
  background:linear-gradient(160deg,var(--ink) 0%,var(--ink-deep) 100%);
  color:#FBFAF7;
}
.cta-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,.86fr);
  gap:64px;
  align-items:start;
}
.cta-copy h2{
  font-size:clamp(28px,3.2vw,40px);
  line-height:1.18;
  font-weight:800;
  letter-spacing:-.02em;
  margin-top:14px;
}
.cta-copy p{
  margin-top:18px;
  font-size:15px;
  line-height:1.85;
  color:rgba(251,250,247,.72);
  max-width:440px;
}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.cta-points li{
  display:flex;
  align-items:flex-start;
  gap:12px;
  font-size:15px;
  color:rgba(251,250,247,.86);
}
.cta-points li::before{
  content:"";
  width:16px;
  height:1.5px;
  background:var(--lime);
  margin-top:12px;
  flex-shrink:0;
}
.cta-section .eyebrow{color:rgba(251,250,247,.6)}
.cta-section .eyebrow::before{background:var(--lime)}
.form-card{
  background:#FBFAF7;
  border-radius:var(--r-card);
  padding:32px;
  color:var(--text);
}
.form-card h3{
  font-size:19px;
  font-weight:700;
  color:var(--ink);
  margin-bottom:6px;
}
.form-card .form-sub{
  font-size:13px;
  color:var(--muted);
  margin-bottom:22px;
}
.field{margin-bottom:16px}
.field label{
  display:block;
  font-size:13px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:7px;
}
.field input,.field select,.field textarea{
  width:100%;
  border:1px solid var(--line);
  border-radius:var(--r-input);
  background:#fff;
  padding:12px 14px;
  font-size:14px;
  color:var(--text);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.field textarea{min-height:88px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--ink);
  box-shadow:0 0 0 3px rgba(200,241,53,.4);
}
.field input::placeholder,.field textarea::placeholder{color:var(--faint)}
.field.has-error input,.field.has-error textarea,.field.has-error select{border-color:var(--warn)}
.field .err{
  display:none;
  margin-top:6px;
  font-size:12px;
  color:var(--warn);
}
.field.has-error .err{display:block}
.form-note{
  margin-top:12px;
  font-size:12px;
  color:var(--faint);
  line-height:1.7;
}
.form-success{
  display:none;
  margin-top:16px;
  padding:12px 14px;
  border-radius:var(--r-input);
  background:rgba(47,125,90,.1);
  border:1px solid rgba(47,125,90,.35);
  color:var(--ok);
  font-size:13px;
}
.form-success.is-visible{display:block}
.form-card .btn{width:100%;margin-top:6px}
/* ---------- footer ---------- */
.site-footer{
  background:var(--ink-deep);
  color:rgba(251,250,247,.78);
  padding:72px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:#FBFAF7;
  font-size:17px;
  font-weight:700;
}
.footer-brand svg{width:24px;height:24px;color:var(--lime)}
.footer-desc{
  margin-top:16px;
  font-size:14px;
  line-height:1.8;
  color:rgba(251,250,247,.6);
  max-width:320px;
}
.footer-col h3{
  font-size:13px;
  font-weight:600;
  letter-spacing:.1em;
  color:rgba(251,250,247,.55);
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;line-height:1.7;color:rgba(251,250,247,.72)}
.footer-col a{transition:color .24s var(--ease)}
.footer-col a:hover{color:var(--lime)}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  padding-top:22px;
  border-top:1px solid rgba(251,250,247,.12);
  font-size:12.5px;
  color:rgba(251,250,247,.5);
}
/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 24px}
  .list-grid{column-gap:36px}
}
@media (max-width:1023px){
  .header-inner{gap:16px;height:64px}
  .main-nav{
    position:fixed;
    inset:64px 0 0;
    z-index:80;
    flex-direction:column;
    align-items:flex-start;
    gap:4px;
    margin:0;
    padding:24px 24px 40px;
    background:var(--bg);
    overflow-y:auto;
    transform:translateX(-100%);
    transition:transform .36s var(--ease);
    display:flex;
  }
  body.nav-open .main-nav{transform:translateX(0)}
  body.nav-open{overflow:hidden}
  .nav-link{
    width:100%;
    height:auto;
    padding:14px 0;
    font-size:18px;
    border-bottom:1px solid var(--line);
  }
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--ink)}
  .nav-link.is-active::before{
    content:"";
    width:6px;
    height:6px;
    background:var(--lime);
    margin-right:10px;
    border-radius:1px;
  }
  .nav-mobile-extra{
    display:flex;
    flex-direction:column;
    gap:14px;
    width:100%;
    margin-top:26px;
  }
  .nav-mobile-extra .search input{width:100%}
  .nav-mobile-extra .search input:focus{width:100%}
  .nav-mobile-extra .btn{width:100%}
  .header-actions .search{display:none}
  .header-actions .btn{display:none}
  .menu-toggle{display:flex}
  .hero-inner{grid-template-columns:1fr;gap:32px;padding-top:48px}
  .page-hero::after{width:100%;height:60%;top:auto;bottom:0;opacity:.35;-webkit-mask-image:linear-gradient(180deg,transparent,#000 70%);mask-image:linear-gradient(180deg,transparent,#000 70%)}
  .hero-side{flex-direction:row;flex-wrap:wrap;padding-bottom:32px}
  .hero-side .side-card{flex:1 1 260px}
  .path-grid{grid-template-columns:1fr;gap:36px}
  .faq-grid{grid-template-columns:1fr;gap:32px}
  .faq-intro p{max-width:none}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .brand-text{font-size:16px}
  .hero-copy h1{font-size:32px;line-height:1.2}
  .hero-copy p.lead{font-size:15px}
  .stat-bar{grid-template-columns:1fr 1fr;margin-top:36px}
  .stat-bar .stat{border-right:0;border-bottom:1px solid rgba(16,35,28,.14);padding:18px 0}
  .stat-bar .stat:nth-child(2),.stat-bar .stat:nth-child(3){padding-left:0}
  .stat-bar .stat:nth-child(2){padding-left:16px}
  .stat-bar .stat:nth-child(3){border-bottom:0;grid-column:1 / -1}
  .stat-bar .stat:nth-child(1){border-right:1px solid rgba(16,35,28,.14)}
  .list-grid{grid-template-columns:1fr}
  .list-row{grid-template-columns:40px minmax(0,1fr);gap:12px}
  .row-meta{grid-column:2;flex-direction:row;align-items:center;justify-content:flex-start;padding-top:8px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .section-head .head-note{text-align:left;max-width:none}
  .form-card{padding:24px}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px}
  .site-footer{padding-top:56px}
  .footer-bottom{flex-direction:column;gap:8px}
  .path-figure{aspect-ratio:16/10}
  .step{grid-template-columns:36px minmax(0,1fr);gap:14px}
  .step-idx{width:32px;height:32px}
}
@media (max-width:480px){
  .hero-copy h1{font-size:28px}
  .btn{height:46px;padding:0 18px;font-size:14px}
  .faq-list summary{font-size:15.5px;min-height:56px}
  .tag{font-size:11px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --ink:#10231C;
  --ink-deep:#08150F;
  --lime:#C8F135;
  --bg:#FBFAF7;
  --sand:#EFECE4;
  --line:#DCD8CD;
  --text:#1A1C16;
  --text-2:#5B5F55;
  --text-3:#8A8E82;
  --ok:#2F7D5A;
  --warn:#B3261E;
  --info:#3A5A8C;
  --r-card:14px;
  --r-input:10px;
  --r-btn:12px;
  --shadow-hover:0 14px 36px -18px rgba(16,35,28,.35);
  --ease:cubic-bezier(.22,1,.36,1);
  --w:1280px;
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Space Grotesk",Inter,"HarmonyOS Sans SC","PingFang SC",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,dl,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}
::selection{background:var(--lime);color:var(--ink)}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--ink);color:#FBFAF7;padding:10px 16px;border-radius:8px;
}
.skip-link:focus{left:16px;top:12px}

.container{width:100%;max-width:var(--w);margin:0 auto;padding:0 40px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease),background .3s var(--ease),backdrop-filter .3s var(--ease);
}
.site-header.is-scrolled{
  box-shadow:0 1px 0 rgba(16,35,28,.06);
  background:rgba(251,250,247,.92);
  backdrop-filter:blur(6px);
}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto}
.brand-mark{width:24px;height:24px;flex:0 0 auto}
.brand-text{font-size:18px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:6px}
.nav-link{
  position:relative;padding:8px 12px;font-size:16px;font-weight:500;color:var(--text-2);
  white-space:nowrap;transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;border-radius:2px;
  background:var(--ink);transition:left .24s var(--ease),right .24s var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{left:12px;right:12px}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{left:12px;right:12px;background:var(--ink)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.search{position:relative;display:flex;align-items:center}
.search input{
  width:220px;height:40px;padding:0 38px 0 16px;background:#fff;
  border:1px solid var(--line);border-radius:999px;font-size:14px;color:var(--text);
  transition:width .28s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search input::placeholder{color:var(--text-3)}
.search input:focus{outline:none;width:300px;border-color:var(--ink);box-shadow:0 0 0 3px rgba(200,241,53,.35)}
.search svg{position:absolute;right:14px;width:16px;height:16px;color:var(--text-3);pointer-events:none}
.menu-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.menu-toggle:hover{border-color:var(--ink)}
.menu-toggle span{display:block;width:16px;height:1.6px;background:var(--ink);border-radius:2px;transition:transform .25s var(--ease),opacity .2s var(--ease)}
.menu-toggle.is-open span:nth-child(1){transform:translateY(5.6px) rotate(45deg)}
.menu-toggle.is-open span:nth-child(2){opacity:0}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-5.6px) rotate(-45deg)}
.nav-mobile-extra{display:none}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn svg{width:16px;height:16px;transition:transform .22s var(--ease)}
.btn-primary{background:var(--ink);color:#FBFAF7}
.btn-primary:hover{background:var(--lime);color:var(--ink);box-shadow:var(--shadow-hover)}
.btn-primary:hover svg{transform:translateX(4px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#FBFAF7}
.btn-lime{background:var(--lime);color:var(--ink)}
.btn-lime:hover{background:#FBFAF7;color:var(--ink)}
.btn-lime:hover svg{transform:translateX(4px)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--ink);
  padding-bottom:2px;border-bottom:1px solid var(--line);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.btn-text:hover{border-color:var(--lime)}
.btn-text svg{width:15px;height:15px;transition:transform .22s var(--ease)}
.btn-text:hover svg{transform:translateX(3px)}

/* ---------- Common bits ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-num);font-size:12px;font-weight:600;letter-spacing:.12em;
  text-transform:uppercase;color:var(--text-2);
}
.eyebrow::before{content:"";display:block;width:22px;height:1px;background:var(--line)}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;
  border:1px solid var(--line);background:var(--sand);
  font-size:12px;font-weight:600;letter-spacing:.02em;color:var(--text-2);white-space:nowrap;
}
.badge-lime{background:var(--lime);border-color:var(--lime);color:var(--ink)}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.section-title{font-size:36px;line-height:1.2;font-weight:700;letter-spacing:-.02em;color:var(--ink)}
.section-desc{margin-top:12px;font-size:16px;line-height:1.8;color:var(--text-2);max-width:62ch}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- Hero ---------- */
.page-hero{padding:36px 0 72px;border-bottom:1px solid var(--line);background:var(--bg)}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);padding:18px 0 0}
.crumbs a{color:var(--text-2);transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--ink)}
.crumbs span[aria-current]{color:var(--text-3)}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;margin-top:28px}
.hero-title{
  font-size:48px;line-height:1.12;font-weight:800;letter-spacing:-.02em;color:var(--ink);
  margin:16px 0 0;
}
.hero-title span{display:block;color:var(--text-2);font-size:26px;font-weight:600;letter-spacing:-.01em;margin-top:14px;line-height:1.4}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:var(--text-2);max-width:54ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);
  border:1px solid var(--line);
}
.hero-tag{
  position:absolute;left:20px;bottom:20px;right:20px;
  display:flex;align-items:center;gap:10px;
  background:rgba(251,250,247,.94);backdrop-filter:blur(6px);
  border:1px solid var(--line);border-radius:12px;padding:12px 16px;
  font-size:14px;color:var(--ink);font-weight:600;
}
.hero-tag .dot{width:8px;height:8px;border-radius:50%;background:var(--ok);flex:0 0 auto}

/* ---------- Guide grid ---------- */
.guide-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.guide-card{
  display:flex;flex-direction:column;gap:12px;height:100%;
  padding:24px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.guide-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#CFCabc}
.guide-card:hover{border-color:#CFC9BC}
.guide-num{font-family:var(--font-num);font-size:12px;font-weight:600;letter-spacing:.12em;color:var(--text-3)}
.guide-title{font-size:20px;line-height:1.35;font-weight:600;color:var(--ink)}
.guide-text{font-size:15px;line-height:1.75;color:var(--text-2)}
.guide-link{margin-top:auto;padding-top:6px}

/* ---------- Stat strip ---------- */
.stat-strip{background:var(--sand);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat-item{padding:36px 28px;border-left:1px solid var(--line)}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-num{
  font-family:var(--font-num);font-size:clamp(32px,4vw,44px);font-weight:700;
  line-height:1;letter-spacing:-.02em;color:var(--ink);
}
.stat-num small{font-size:14px;font-weight:600;letter-spacing:0;color:var(--text-2);margin-left:4px}
.stat-label{margin-top:12px;font-size:14px;line-height:1.6;color:var(--text-2)}

/* ---------- Help layout ---------- */
.help-layout{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start}
.faq-list{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:20px;
  padding:24px 4px;font-size:17px;font-weight:600;line-height:1.5;color:var(--ink);
  cursor:pointer;list-style:none;transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:22px;font-weight:400;line-height:1;color:var(--text-3);
  transition:transform .28s var(--ease),color .2s var(--ease);
}
.faq-item summary:hover{color:var(--ink)}
.faq-item summary:hover::after{color:var(--ink)}
.faq-item[open] summary::after{transform:rotate(45deg);color:var(--ink)}
.faq-a{padding:0 4px 28px;font-size:15.5px;line-height:1.9;color:var(--text-2);max-width:64ch}

.contact-card{
  position:sticky;top:96px;
  background:var(--sand);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;
}
.contact-card h2{font-size:20px;line-height:1.35;font-weight:700;color:var(--ink)}
.contact-card p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--text-2)}
.contact-rows{margin-top:20px;border-top:1px solid var(--line)}
.contact-row{display:flex;align-items:flex-start;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);font-size:14.5px;line-height:1.6;color:var(--text)}
.contact-row svg{width:18px;height:18px;flex:0 0 auto;color:var(--ink);margin-top:2px}
.contact-row b{display:block;font-weight:600;color:var(--ink)}
.contact-row span{color:var(--text-2)}
.contact-actions{margin-top:22px;display:flex;flex-direction:column;gap:10px}
.contact-note{margin-top:12px;font-size:12.5px;line-height:1.7;color:var(--text-3)}

/* ---------- Safety list ---------- */
.safety-list{border-top:1px solid var(--line)}
.safety-row{
  display:grid;grid-template-columns:72px 1fr auto;gap:24px;align-items:start;
  padding:24px 12px;border-bottom:1px solid var(--line);
  transition:background .22s var(--ease);
}
.safety-row:hover{background:var(--sand)}
.safety-num{font-family:var(--font-num);font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--text-3);padding-top:4px}
.safety-title{font-size:18px;font-weight:600;line-height:1.4;color:var(--ink)}
.safety-text{margin-top:6px;font-size:15px;line-height:1.8;color:var(--text-2);max-width:60ch}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(160deg,var(--ink) 0%,var(--ink-deep) 100%);color:#FBFAF7}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;padding:64px 0}
.cta-title{font-size:34px;line-height:1.2;font-weight:800;letter-spacing:-.02em}
.cta-text{margin-top:14px;font-size:16px;line-height:1.8;color:rgba(251,250,247,.72);max-width:56ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-band .btn-ghost{border-color:rgba(251,250,247,.4);color:#FBFAF7}
.cta-band .btn-ghost:hover{background:#FBFAF7;color:var(--ink);border-color:#FBFAF7}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink-deep);color:#FBFAF7;padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#FBFAF7;font-size:18px;font-weight:700}
.footer-brand svg{width:24px;height:24px}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(251,250,247,.62);max-width:34ch}
.footer-col h3{font-size:13px;font-weight:600;letter-spacing:.1em;color:rgba(251,250,247,.5);margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14.5px;line-height:1.7;color:rgba(251,250,247,.72)}
.footer-col a{transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--lime)}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(251,250,247,.5);
}

/* ---------- Motion ---------- */
.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.js .reveal.is-visible{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    scroll-behavior:auto!important;
  }
  .js .reveal{opacity:1;transform:none}
}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .header-inner{gap:16px}
  .nav-link{padding:8px 10px;font-size:15px}
  .search input{width:180px}
  .search input:focus{width:240px}
}

@media (max-width:1023px){
  .container{padding:0 24px}
  .header-inner{height:60px;gap:12px}
  .menu-toggle{display:flex;order:3}
  .header-actions{display:none}
  .main-nav{
    position:fixed;left:0;right:0;top:60px;bottom:0;z-index:70;
    display:flex;flex-direction:column;align-items:stretch;gap:0;margin:0;
    padding:16px 24px 40px;background:var(--bg);overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-8px);pointer-events:none;
    transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s var(--ease);
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:none;pointer-events:auto}
  .nav-link{padding:18px 0;font-size:19px;border-bottom:1px solid var(--line)}
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--ink)}
  .nav-mobile-extra{display:flex;flex-direction:column;gap:16px;margin-top:28px}
  .nav-mobile-extra .search input{width:100%}
  .nav-mobile-extra .search input:focus{width:100%}
  .nav-mobile-extra .btn{width:100%}

  .section{padding:72px 0}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-title{font-size:38px}
  .hero-title span{font-size:21px}
  .guide-grid{grid-template-columns:repeat(2,1fr)}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .stat-item{padding:28px 20px}
  .stat-item:nth-child(odd){border-left:0;padding-left:0}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line)}
  .help-layout{grid-template-columns:1fr;gap:36px}
  .contact-card{position:static}
  .section-title{font-size:28px}
  .cta-title{font-size:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}

@media (max-width:767px){
  .container{padding:0 20px}
  .brand-text{font-size:16px}
  .page-hero{padding:20px 0 52px}
  .hero-title{font-size:31px}
  .hero-title span{font-size:18px;margin-top:10px}
  .hero-sub{font-size:16px}
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .guide-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr}
  .stat-item{border-left:0;padding:22px 0;border-bottom:1px solid var(--line)}
  .stat-item:last-child{border-bottom:0}
  .faq-item summary{font-size:16px;padding:20px 2px}
  .faq-a{font-size:15px;padding-bottom:22px}
  .safety-row{grid-template-columns:1fr;gap:8px;padding:20px 4px}
  .safety-num{padding-top:0}
  .safety-row .badge{justify-self:start}
  .cta-inner{padding:48px 0;flex-direction:column;align-items:flex-start;gap:26px}
  .cta-title{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .site-footer{padding:56px 0 24px}
}

@media (max-width:480px){
  .hero-title{font-size:27px}
  .hero-actions .btn{width:100%}
  .guide-card{padding:20px}
}