/* roulang page: index */
:root{
  --paper:#F4F1EA;
  --paper-2:#EAE6DC;
  --ink:#15171A;
  --ink-70:#4B4E54;
  --pine:#123B2E;
  --lime:#C9F24D;
  --ember:#E2532F;
  --line:rgba(21,23,26,.12);
  --line-strong:rgba(21,23,26,.24);
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(21,23,26,.06),0 8px 24px -12px rgba(21,23,26,.18);
  --shadow-2:0 24px 60px -28px rgba(21,23,26,.28);
  --ease:cubic-bezier(.22,1,.36,1);
  --font-display:"Noto Serif SC","Source Han Serif SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Space Grotesk","Inter",var(--font-sans);
  --nav-h:64px;
  --gap:24px;
  --sec:clamp(56px,7vw,96px);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 clamp(16px,3vw,24px);
}
.section{padding:var(--sec) 0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  margin-bottom:32px;
}
.section-title{
  font-size:clamp(24px,2.6vw,36px);
  font-weight:900;
  line-height:1.25;
  letter-spacing:-.01em;
}
.section-desc{
  font-size:14px;
  color:var(--ink-70);
  margin-top:8px;
  max-width:46em;
}
.text-link{
  font-size:15px;
  font-weight:500;
  padding-bottom:3px;
  background-image:linear-gradient(var(--ink),var(--ink));
  background-size:0% 1px;
  background-position:0 100%;
  background-repeat:no-repeat;
  transition:background-size .3s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.text-link:hover{background-size:100% 1px}
.text-link .arrow{display:inline-block;margin-left:6px;transition:transform .2s var(--ease)}
.text-link:hover .arrow{transform:translateX(4px)}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:16px;
  left:0;
  right:0;
  z-index:80;
  display:flex;
  justify-content:center;
  padding:0 clamp(12px,3vw,24px);
  pointer-events:none;
}
.nav-shell{
  pointer-events:auto;
  width:100%;
  max-width:1200px;
  height:var(--nav-h);
  display:flex;
  align-items:center;
  gap:20px;
  padding:0 14px 0 16px;
  border-radius:var(--r-pill);
  background:rgba(244,241,234,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  transition:height .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-compact .nav-shell{
  height:56px;
  background:rgba(244,241,234,.94);
  box-shadow:0 1px 2px rgba(21,23,26,.08),0 12px 30px -16px rgba(21,23,26,.28);
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:26px;height:26px;border-radius:7px;
  background:var(--ink);
  display:grid;place-items:center;flex-shrink:0;
  transition:transform .2s var(--ease);
}
.brand:hover .brand-mark{transform:translateY(-1px)}
.brand-name{
  font-weight:900;
  font-size:17px;
  letter-spacing:.02em;
  white-space:nowrap;
}
.brand-name span{color:var(--ink-70);font-weight:500;font-size:12px;letter-spacing:.08em;margin-left:6px}
.nav-links{display:flex;align-items:center;gap:28px;margin:0 auto}
.nav-link{
  position:relative;
  font-size:16px;
  font-weight:500;
  padding:6px 0;
  color:var(--ink);
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:-4px;
  width:16px;
  height:4px;
  border-radius:2px;
  background:var(--lime);
  transform:translateX(-50%) scaleX(0);
  transform-origin:center;
  transition:transform .2s var(--ease);
}
.nav-link:hover::after,.nav-link.is-active::after{transform:translateX(-50%) scaleX(1)}
.nav-cta{flex-shrink:0}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  place-items:center;
  margin-left:auto;
}
.nav-toggle span{
  display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle span + span{margin-top:5px}
body.drawer-open .nav-toggle span:first-child{transform:translateY(3.5px) rotate(45deg)}
body.drawer-open .nav-toggle span:last-child{transform:translateY(-3.5px) rotate(-45deg)}

.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:75;
  background:var(--paper);
  padding:calc(var(--nav-h) + 48px) 24px 32px;
  display:flex;
  flex-direction:column;
  gap:6px;
  transform:translateY(-102%);
  transition:transform .3s var(--ease);
  visibility:hidden;
}
.mobile-drawer.is-open{transform:translateY(0);visibility:visible}
.mobile-drawer a:not(.btn){
  font-size:20px;
  font-weight:700;
  padding:14px 0;
  border-bottom:1px solid var(--line);
}
.mobile-drawer .btn{margin-top:auto}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 26px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:700;
  line-height:1.2;
  border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn .arrow{transition:transform .2s var(--ease);font-size:14px}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--lime);color:var(--ink)}
.btn-primary:hover{background:var(--ink);color:var(--lime);transform:translateY(-1px);box-shadow:var(--shadow-1)}
.btn-ghost{border-color:var(--line-strong);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);transform:translateY(-1px)}
.btn:active{transform:translateY(1px)}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding-top:calc(16px + var(--nav-h) + clamp(28px,4.5vw,60px));
  padding-bottom:clamp(64px,8vw,100px);
  overflow:visible;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(21,23,26,.03) 0 1px,transparent 1px 13px);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:clamp(32px,4vw,56px);
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.12em;
  color:var(--ink-70);
  text-transform:none;
}
.eyebrow i{
  width:8px;height:8px;border-radius:50%;
  background:var(--lime);
  box-shadow:0 0 0 4px rgba(201,242,77,.28);
}
.hero h1{
  font-family:var(--font-display);
  font-size:clamp(34px,4.6vw,62px);
  font-weight:700;
  line-height:1.15;
  letter-spacing:.01em;
  margin:18px 0 20px;
  max-width:15em;
}
.hero h1 em{
  font-style:normal;
  position:relative;
  background-image:linear-gradient(transparent 62%,rgba(201,242,77,.72) 62%);
  background-repeat:no-repeat;
  background-size:100% 100%;
}
.hero-sub{
  font-size:clamp(16px,1.5vw,18px);
  color:var(--ink-70);
  max-width:32em;
  line-height:1.8;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{
  display:flex;
  margin-top:40px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.stat{flex:1 1 0;min-width:0}
.stat + .stat{border-left:1px solid var(--line);padding-left:clamp(14px,2vw,24px)}
.stat-num{
  display:block;
  font-family:var(--font-num);
  font-size:28px;
  font-weight:700;
  line-height:1.15;
  letter-spacing:.01em;
}
.stat-label{
  display:block;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--ink-70);
  margin-top:2px;
}
.hero-media{position:relative;padding-bottom:28px}
.hero-media > img{
  width:100%;
  aspect-ratio:3/2;
  object-fit:cover;
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-2);
}
.hero-mini{
  position:absolute;
  right:-10px;
  bottom:0;
  width:44%;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:10px;
  box-shadow:var(--shadow-2);
}
.hero-mini-num{
  display:inline-block;
  font-family:var(--font-num);
  font-size:20px;
  font-weight:700;
  line-height:1;
  background:var(--lime);
  color:var(--ink);
  border-radius:6px;
  padding:4px 8px;
  margin-bottom:8px;
}
.hero-mini img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-sm);
}
.hero-mini p{
  font-size:12px;
  letter-spacing:.04em;
  color:var(--ink-70);
  margin-top:8px;
}

/* ---------- hot grid ---------- */
.grid-hot{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:var(--gap);
}
.hot-card{
  grid-column:span 4;
  display:flex;
  flex-direction:column;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:border-color .32s var(--ease),transform .32s var(--ease),box-shadow .32s var(--ease);
}
.hot-card.wide{grid-column:span 6}
.hot-card:hover{border-color:var(--line-strong);box-shadow:var(--shadow-1);transform:translateY(-2px)}
.hot-card:active{transform:translateY(0)}
.hot-media{overflow:hidden;background:var(--paper-2)}
.hot-media img{
  width:100%;
  object-fit:cover;
  transition:transform .32s var(--ease);
}
.hot-card.wide .hot-media img{aspect-ratio:16/10}
.hot-card:not(.wide) .hot-media img{aspect-ratio:1/1}
.hot-card:hover .hot-media img{transform:scale(1.04)}
.hot-body{padding:20px;display:flex;flex-direction:column;flex:1}
.hot-tag{
  align-self:flex-start;
  font-size:12px;
  font-weight:700;
  letter-spacing:.04em;
  padding:3px 10px;
  border-radius:var(--r-pill);
  background:var(--paper-2);
  color:var(--ink-70);
  margin-bottom:10px;
}
.hot-card.wide .hot-tag{background:var(--lime);color:var(--ink)}
.hot-title{
  font-size:19px;
  font-weight:700;
  line-height:1.45;
}
.hot-desc{
  font-size:14px;
  color:var(--ink-70);
  line-height:1.75;
  margin-top:8px;
}
.hot-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:auto;
  padding-top:16px;
}
.hot-meta{
  font-size:12px;
  letter-spacing:.06em;
  color:var(--ink-70);
  font-family:var(--font-num);
}
.hot-arrow{
  width:36px;height:36px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  display:grid;place-items:center;
  flex-shrink:0;
  transition:transform .28s var(--ease),background .28s var(--ease),border-color .28s var(--ease),color .28s var(--ease);
}
.hot-card:hover .hot-arrow{
  transform:translateX(4px);
  background:var(--lime);
  border-color:var(--lime);
  color:var(--ink);
}

/* ---------- reviews ---------- */
.reviews{background:var(--paper-2)}
.review-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
}
.review-nav{display:flex;gap:10px}
.review-btn{
  width:40px;height:40px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  display:grid;place-items:center;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.review-btn:hover{background:var(--ink);color:var(--lime);border-color:var(--ink)}
.review-btn:active{transform:scale(.96)}
.review-track{
  display:flex;
  gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:4px 0 20px;
  margin-top:32px;
  scrollbar-width:thin;
  scrollbar-color:var(--line-strong) transparent;
}
.review-track::-webkit-scrollbar{height:6px}
.review-track::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:3px}
.review-card{
  flex:0 0 340px;
  scroll-snap-align:start;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:26px 24px;
  display:flex;
  flex-direction:column;
  gap:14px;
  transition:border-color .3s var(--ease),transform .3s var(--ease);
}
.review-card:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.review-quote{
  width:36px;height:36px;
  border-radius:10px;
  background:var(--lime);
  color:var(--ink);
  font-family:var(--font-display);
  font-size:24px;
  font-weight:900;
  line-height:1;
  display:grid;
  place-items:center;
}
.review-text{font-size:15px;line-height:1.8;color:var(--ink)}
.review-person{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:auto}
.review-name{font-size:14px;font-weight:700}
.review-tag{
  font-size:12px;
  padding:2px 10px;
  border-radius:var(--r-pill);
  background:var(--paper-2);
  color:var(--ink-70);
  letter-spacing:.04em;
}
.review-dots{display:none;justify-content:center;gap:8px;margin-top:8px}
.review-dots button{
  width:8px;height:8px;border-radius:50%;
  background:var(--line-strong);
  transition:background .2s var(--ease),width .2s var(--ease);
}
.review-dots button.is-active{background:var(--ink);width:20px;border-radius:4px}

/* ---------- guard ---------- */
.guard{background:var(--pine);color:var(--paper)}
.guard-inner{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  padding:24px 0;
}
.guard-item{
  display:flex;
  align-items:center;
  gap:12px;
  padding:8px clamp(12px,2vw,24px);
}
.guard-item + .guard-item{border-left:1px solid rgba(255,255,255,.16)}
.guard-icon{
  width:34px;height:34px;
  border-radius:10px;
  background:rgba(201,242,77,.14);
  color:var(--lime);
  display:grid;place-items:center;
  flex-shrink:0;
}
.guard-label{font-size:14px;font-weight:700;line-height:1.4}
.guard-sub{font-size:12px;color:rgba(244,241,234,.66);line-height:1.5;display:block;margin-top:2px}

/* ---------- news ---------- */
.chips{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.chip{
  font-size:12px;
  letter-spacing:.04em;
  padding:7px 14px;
  border-radius:var(--r-pill);
  background:var(--paper-2);
  color:var(--ink-70);
  border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.chip:hover{border-color:var(--line-strong);color:var(--ink)}
.chip.is-active{background:var(--ink);color:var(--paper)}
.news-list{margin-top:24px;border-top:1px solid var(--line)}
.news-item{border-bottom:1px solid var(--line)}
.news-link{
  display:grid;
  grid-template-columns:168px minmax(0,1fr) 28px;
  gap:24px;
  align-items:center;
  padding:20px 12px;
  transition:background .2s var(--ease);
}
.news-link:hover{background:var(--paper-2)}
.news-link:active{background:var(--paper-2)}
.news-thumb{overflow:hidden;border-radius:var(--r-sm);background:var(--paper-2)}
.news-thumb img{width:168px;height:112px;object-fit:cover;transition:transform .32s var(--ease)}
.news-link:hover .news-thumb img{transform:scale(1.04)}
.news-title{
  font-size:18px;
  font-weight:700;
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  background-image:linear-gradient(var(--ink),var(--ink));
  background-size:0% 1px;
  background-position:0 100%;
  background-repeat:no-repeat;
  transition:background-size .3s var(--ease);
}
.news-link:hover .news-title{background-size:100% 1px}
.news-summary{
  font-size:14px;
  color:var(--ink-70);
  line-height:1.75;
  margin:6px 0 10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:12px;color:var(--ink-70)}
.news-category{
  background:var(--lime);
  color:var(--ink);
  font-weight:700;
  padding:3px 10px;
  border-radius:var(--r-pill);
  letter-spacing:.02em;
}
.news-date{font-family:var(--font-num);letter-spacing:.04em}
.news-arrow{
  font-size:18px;
  color:var(--ink-70);
  transition:transform .2s var(--ease),color .2s var(--ease);
  justify-self:end;
}
.news-link:hover .news-arrow{transform:translateX(4px);color:var(--ink)}
.news-empty{
  margin-top:24px;
  min-height:96px;
  border:1px dashed var(--line-strong);
  border-radius:var(--r-md);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:24px;
  text-align:center;
  color:var(--ink-70);
  font-size:14px;
}
.news-empty svg{color:var(--ink-70);opacity:.7}
.news-empty .btn{margin-top:4px}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line);margin-top:32px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  display:grid;
  grid-template-columns:32px minmax(0,1fr) 20px;
  gap:12px;
  align-items:center;
  width:100%;
  text-align:left;
  padding:20px 0;
  font-size:18px;
  font-weight:700;
  line-height:1.5;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--ink)}
.faq-idx{
  font-family:var(--font-num);
  font-size:14px;
  color:var(--ink-70);
  letter-spacing:.04em;
}
.faq-icon{position:relative;width:16px;height:16px;justify-self:end}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink);
  border-radius:2px;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.faq-icon::before{top:7px;left:0;width:16px;height:2px}
.faq-icon::after{top:0;left:7px;width:2px;height:16px}
.faq-item.is-open .faq-icon::after{transform:rotate(45deg);opacity:0}
.faq-item.is-open .faq-icon::before{transform:rotate(45deg)}
.faq-a{
  overflow:hidden;
  max-height:0;
  transition:max-height .25s var(--ease);
}
.faq-item.is-open .faq-a{max-height:320px}
.faq-a p{
  margin:0 0 20px;
  padding-left:44px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-70);
  max-width:62em;
}

/* ---------- cta band ---------- */
.cta-band{background:var(--paper-2)}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-inner h2{
  font-size:clamp(22px,2.4vw,32px);
  font-weight:900;
  line-height:1.3;
  letter-spacing:-.01em;
}
.cta-inner p{font-size:14px;color:var(--ink-70);margin-top:8px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{
  background:var(--pine);
  color:var(--paper);
  padding:clamp(48px,6vw,72px) 0 24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1.2fr;
  gap:clamp(28px,4vw,48px);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{background:var(--lime)}
.footer-brand .brand-mark svg path{fill:var(--pine)}
.footer-brand .brand-name{color:var(--paper)}
.footer-about{
  font-size:14px;
  line-height:1.8;
  color:rgba(244,241,234,.72);
  max-width:24em;
}
.footer-title{
  font-size:12px;
  letter-spacing:.08em;
  color:rgba(244,241,234,.55);
  margin-bottom:16px;
  font-weight:500;
}
.footer-links{display:grid;gap:10px;font-size:14px}
.footer-links a{
  color:rgba(244,241,234,.86);
  transition:color .2s var(--ease);
  display:inline-block;
}
.footer-links a:hover{color:var(--lime)}
.footer-info{font-size:14px;color:rgba(244,241,234,.72);line-height:1.9}
.footer-info strong{color:var(--paper);font-weight:700}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.16);
  margin-top:40px;
  padding-top:20px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12px;
  color:rgba(244,241,234,.6);
  letter-spacing:.02em;
}
.footer-bottom .domain{font-family:var(--font-num);letter-spacing:.04em}

/* ---------- reveal ---------- */
.reveal{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .52s var(--ease),transform .52s var(--ease);
}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .hero-grid{gap:32px}
  .news-link{grid-template-columns:150px minmax(0,1fr) 24px;gap:20px}
  .news-thumb img{width:150px;height:100px}
}
@media (max-width:1023px){
  :root{--nav-h:56px}
  .nav-links{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:grid}
  .hero-grid{grid-template-columns:1fr}
  .hero-media{padding-bottom:0;max-width:640px}
  .hero-mini{position:static;width:100%;margin-top:16px;right:auto;bottom:auto}
  .grid-hot{grid-template-columns:repeat(6,1fr)}
  .hot-card.wide{grid-column:span 6}
  .hot-card{grid-column:span 3}
  .hot-card:not(.wide) .hot-media img{aspect-ratio:4/3}
  .guard-inner{grid-template-columns:repeat(2,1fr);gap:16px 0}
  .guard-item + .guard-item{border-left:0}
  .guard-item:nth-child(even){border-left:1px solid rgba(255,255,255,.16)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .review-btn{display:none}
  .review-dots{display:flex}
  .hero h1{max-width:20em}
}
@media (max-width:767px){
  body{font-size:15px}
  .grid-hot{grid-template-columns:1fr}
  .hot-card,.hot-card.wide{grid-column:span 1}
  .hero-stats{margin-top:28px;padding-top:18px}
  .stat-num{font-size:22px}
  .stat-label{font-size:11px;letter-spacing:.02em}
  .news-link{grid-template-columns:96px minmax(0,1fr);gap:14px;padding:16px 6px}
  .news-thumb img{width:96px;height:96px}
  .news-arrow{display:none}
  .news-summary{-webkit-line-clamp:2}
  .review-card{flex:0 0 260px;padding:20px}
  .faq-q{font-size:16px;gap:10px}
  .faq-a p{padding-left:0;font-size:14px}
  .guard-inner{grid-template-columns:1fr;gap:0}
  .guard-item + .guard-item{border-left:0;border-top:1px solid rgba(255,255,255,.16)}
  .guard-item{padding:14px 0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:479px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
  .hero h1{font-size:clamp(30px,8vw,34px)}
  .section-head{align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none}
  .hot-card:hover,.review-card:hover,.btn:hover{transform:none}
  .hot-card:hover .hot-media img,.news-link:hover .news-thumb img{transform:none}
}

/* roulang page: category1 */
:root{
  --paper:#F4F1EA;
  --paper-2:#EAE6DC;
  --ink:#15171A;
  --ink-70:#4B4E54;
  --pine:#123B2E;
  --lime:#C9F24D;
  --ember:#E2532F;
  --line:rgba(21,23,26,.12);
  --line-strong:rgba(21,23,26,.24);
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(21,23,26,.06),0 8px 24px -12px rgba(21,23,26,.18);
  --shadow-2:0 24px 60px -28px rgba(21,23,26,.28);
  --font-display:"Noto Serif SC","Source Han Serif SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Space Grotesk","Inter","Helvetica Neue",Arial,sans-serif;
  --ease:cubic-bezier(.22,1,.36,1);
  --nav-h:64px;
}

*,
*::before,
*::after{box-sizing:border-box;}

html{scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
img{object-fit:cover;}

::selection{background:var(--lime);color:var(--ink);}

a:focus-visible,
button:focus-visible{
  outline:2px solid var(--lime);
  outline-offset:2px;
  border-radius:4px;
}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{
  position:fixed;
  top:16px;
  left:0;
  right:0;
  z-index:70;
  padding:0 20px;
}

.nav-shell{
  max-width:1200px;
  margin:0 auto;
  height:var(--nav-h);
  display:flex;
  align-items:center;
  gap:20px;
  padding:0 12px 0 18px;
  background:rgba(244,241,234,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--shadow-1);
  transition:height .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease);
}

.site-header.is-scrolled .nav-shell{
  height:56px;
  background:rgba(244,241,234,.94);
  box-shadow:0 1px 2px rgba(21,23,26,.08),0 14px 32px -18px rgba(21,23,26,.28);
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}

.brand-mark{
  width:24px;
  height:24px;
  border-radius:6px;
  background:var(--ink);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex:0 0 auto;
}

.brand-mark svg path{fill:var(--lime);}

.brand-name{
  font-size:16px;
  font-weight:900;
  letter-spacing:.02em;
  white-space:nowrap;
}

.nav-links{
  display:flex;
  align-items:center;
  gap:28px;
  margin:0 auto;
}

.nav-link{
  position:relative;
  font-size:16px;
  font-weight:500;
  color:var(--ink-70);
  padding:6px 0;
  transition:color .2s var(--ease);
}

.nav-link:hover{color:var(--ink);}

.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:-2px;
  width:16px;
  height:4px;
  border-radius:2px;
  background:var(--lime);
  transform:translateX(-50%) scaleX(0);
  transform-origin:center;
  transition:transform .2s var(--ease);
}

.nav-link.is-active{color:var(--ink);font-weight:700;}
.nav-link.is-active::after{transform:translateX(-50%) scaleX(1);}

.nav-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  font-weight:700;
  line-height:1;
  padding:14px 26px;
  border-radius:12px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}

.btn .arrow{
  display:inline-block;
  font-size:14px;
  transition:transform .2s var(--ease);
}

.btn:hover .arrow{transform:translateX(4px);}

.btn-primary{
  background:var(--lime);
  color:var(--ink);
  border-color:var(--lime);
}
.btn-primary:hover{
  background:var(--ink);
  color:var(--lime);
  border-color:var(--ink);
  transform:translateY(-1px);
}

.btn-ghost{
  background:transparent;
  color:var(--ink);
  border-color:var(--line-strong);
}
.btn-ghost:hover{
  border-color:var(--ink);
  transform:translateY(-1px);
}

.btn-sm{
  padding:11px 18px;
  font-size:14px;
}

.btn:active{transform:translateY(1px);}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:700;
  color:var(--ink);
  padding-bottom:2px;
  background-image:linear-gradient(var(--ink),var(--ink));
  background-repeat:no-repeat;
  background-position:0 100%;
  background-size:0 1px;
  transition:background-size .28s var(--ease),color .2s var(--ease);
}
.link-arrow span{transition:transform .2s var(--ease);}
.link-arrow:hover{background-size:100% 1px;color:var(--ink);}
.link-arrow:hover span{transform:translateX(4px);}

/* ---------- 移动抽屉 ---------- */
.nav-toggle{
  display:none;
  width:40px;
  height:40px;
  border:1px solid var(--line-strong);
  border-radius:var(--r-pill);
  background:transparent;
  cursor:pointer;
  padding:0;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--ink);
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}

.nav-drawer{
  position:fixed;
  inset:0;
  z-index:90;
  background:var(--paper);
  padding:22px 22px 28px;
  display:flex;
  flex-direction:column;
  gap:24px;
  transform:translateY(-102%);
  visibility:hidden;
  transition:transform .34s var(--ease),visibility .34s var(--ease);
}
.nav-drawer.is-open{transform:translateY(0);visibility:visible;}

.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}

.drawer-close{
  width:40px;
  height:40px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  background:transparent;
  font-size:20px;
  line-height:1;
  color:var(--ink);
  cursor:pointer;
}

.drawer-links{
  display:flex;
  flex-direction:column;
  gap:4px;
  flex:1 1 auto;
}
.drawer-links a{
  font-size:20px;
  font-weight:700;
  padding:14px 4px;
  border-bottom:1px solid var(--line);
  color:var(--ink);
}
.drawer-links a.is-active{color:var(--ink);}
.drawer-links a.is-active::before{
  content:"";
  display:inline-block;
  width:16px;
  height:4px;
  border-radius:2px;
  background:var(--lime);
  margin-right:10px;
  vertical-align:middle;
}

.drawer-cta{width:100%;}

/* ---------- 主区 ---------- */
main{
  padding-top:calc(var(--nav-h) + 16px + 44px);
  padding-bottom:0;
}

.page-hero{padding-bottom:8px;}

.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.12em;
  color:var(--ink-70);
  text-transform:uppercase;
}
.eyebrow i{
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--lime);
  display:inline-block;
}

.page-hero h1{
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(34px,4.6vw,58px);
  line-height:1.15;
  letter-spacing:.01em;
  margin:18px 0 20px;
}

.hero-lead{
  font-size:18px;
  line-height:1.8;
  color:var(--ink-70);
  max-width:32ch;
}

.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
}

.hero-media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  background:var(--paper-2);
  box-shadow:var(--shadow-2);
}
.hero-media img{
  width:100%;
  height:100%;
  aspect-ratio:3/2;
  transition:transform .32s var(--ease);
}
.hero-media:hover img{transform:scale(1.04);}
.hero-media figcaption{
  position:absolute;
  left:16px;
  bottom:16px;
  padding:8px 14px;
  border-radius:var(--r-pill);
  background:rgba(21,23,26,.78);
  color:var(--paper);
  font-family:var(--font-num);
  font-size:12px;
  letter-spacing:.06em;
}

/* ---------- 引导区 ---------- */
.guide-section{
  padding:96px 0 0;
}

.guide-layout{
  display:grid;
  grid-template-columns:300px minmax(0,1fr);
  gap:56px;
  align-items:start;
}

.guide-aside{
  position:sticky;
  top:calc(var(--nav-h) + 40px);
}

.aside-card{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:26px 24px;
}

.aside-kicker{
  font-size:12px;
  font-weight:700;
  letter-spacing:.12em;
  color:var(--ink-70);
}

.aside-title{
  font-family:var(--font-display);
  font-size:22px;
  font-weight:900;
  line-height:1.3;
  margin:10px 0 18px;
}

.aside-list{
  display:flex;
  flex-direction:column;
  gap:14px;
  margin-bottom:24px;
}
.aside-list li{
  position:relative;
  padding-left:20px;
  font-size:14px;
  line-height:1.75;
  color:var(--ink-70);
}
.aside-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--lime);
}

.guide-rows{
  display:flex;
  flex-direction:column;
  gap:0;
}

.guide-row{
  display:grid;
  grid-template-columns:2fr 3fr;
  gap:36px;
  align-items:center;
  padding:36px 0;
  border-bottom:1px solid var(--line);
}
.guide-row:first-child{padding-top:0;}
.guide-row:last-child{border-bottom:0;padding-bottom:0;}

.guide-row.is-flip .guide-media{order:2;}
.guide-row.is-flip .guide-text{order:1;}

.guide-media{
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--paper-2);
}
.guide-media img{
  width:100%;
  aspect-ratio:4/3;
  transition:transform .32s var(--ease);
}
.guide-media:hover img{transform:scale(1.04);}

.step-num{
  display:inline-block;
  font-family:var(--font-num);
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--ink-70);
  margin-bottom:8px;
}

.guide-text h3{
  font-size:20px;
  font-weight:700;
  line-height:1.4;
  margin-bottom:10px;
}

.guide-text p{
  font-size:15px;
  line-height:1.85;
  color:var(--ink-70);
  margin-bottom:16px;
}

/* ---------- FAQ ---------- */
.faq-section{
  padding:96px 0 0;
}

.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:32px;
}

.section-head h2{
  font-family:var(--font-display);
  font-size:clamp(24px,2.6vw,36px);
  font-weight:900;
  line-height:1.25;
}

.section-sub{
  font-size:14px;
  color:var(--ink-70);
  margin-top:10px;
}

.faq-list{
  max-width:860px;
  border-top:1px solid var(--line);
}

.faq-item{
  border-bottom:1px solid var(--line);
}

.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:16px;
  background:transparent;
  border:0;
  padding:22px 0;
  text-align:left;
  cursor:pointer;
  color:var(--ink);
}

.faq-idx{
  font-family:var(--font-num);
  font-size:14px;
  font-weight:700;
  color:var(--ink-70);
  flex:0 0 auto;
  width:24px;
}

.faq-q h3{
  flex:1 1 auto;
  font-size:18px;
  font-weight:700;
  line-height:1.5;
}

.faq-icon{
  flex:0 0 auto;
  width:22px;
  height:22px;
  position:relative;
  transition:transform .2s var(--ease);
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink);
  border-radius:2px;
}
.faq-icon::before{left:0;top:10px;width:22px;height:2px;}
.faq-icon::after{left:10px;top:0;width:2px;height:22px;}

.faq-item.is-open .faq-icon{transform:rotate(45deg);}

.faq-a{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .26s var(--ease);
}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a > div{overflow:hidden;}
.faq-a p{
  font-size:15px;
  line-height:1.8;
  color:var(--ink-70);
  padding:0 38px 24px 40px;
}

/* ---------- 相关阅读 ---------- */
.related{
  padding:96px 0 0;
}

.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}

.rel-card{
  display:flex;
  flex-direction:column;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:border-color .32s var(--ease),transform .32s var(--ease),box-shadow .32s var(--ease);
}
.rel-card:hover{
  border-color:var(--line-strong);
  transform:translateY(-3px);
  box-shadow:var(--shadow-1);
}
.rel-card:active{transform:translateY(1px);}

.rel-thumb{
  overflow:hidden;
  background:var(--paper-2);
}
.rel-thumb img{
  width:100%;
  aspect-ratio:16/10;
  transition:transform .32s var(--ease);
}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}

.rel-body{
  padding:18px 20px 22px;
  display:flex;
  flex-direction:column;
  gap:8px;
  flex:1 1 auto;
}

.rel-tag{
  align-self:flex-start;
  font-size:12px;
  font-weight:700;
  padding:4px 10px;
  border-radius:var(--r-pill);
  background:var(--lime);
  color:var(--ink);
}

.rel-body h3{
  font-size:18px;
  font-weight:700;
  line-height:1.45;
}

.rel-body p{
  font-size:14px;
  line-height:1.75;
  color:var(--ink-70);
}

.rel-more{
  margin-top:auto;
  padding-top:10px;
  font-size:14px;
  font-weight:700;
  color:var(--ink);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.rel-more span{transition:transform .2s var(--ease);}
.rel-card:hover .rel-more span{transform:translateX(4px);}

/* ---------- 收口 CTA ---------- */
.cta-band{
  margin-top:96px;
  background:var(--paper-2);
  padding:80px 0;
}

.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}

.cta-inner h2{
  font-family:var(--font-display);
  font-size:clamp(24px,2.6vw,34px);
  font-weight:900;
  line-height:1.3;
  max-width:16ch;
}

.cta-inner p{
  font-size:15px;
  line-height:1.8;
  color:var(--ink-70);
  margin-top:12px;
  max-width:44ch;
}

.cta-actions{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
  flex:0 0 auto;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--pine);
  color:var(--paper);
  padding:72px 0 28px;
}

.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:40px;
}

.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}

.footer-brand .brand-mark{background:var(--paper);}
.footer-brand .brand-mark svg path{fill:var(--pine);}

.footer-brand .brand-name{
  color:var(--paper);
  font-size:16px;
  font-weight:900;
  letter-spacing:.02em;
}

.footer-about{
  font-size:14px;
  line-height:1.8;
  color:rgba(244,241,234,.72);
  max-width:30ch;
}

.footer-title{
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  color:rgba(244,241,234,.6);
  margin-bottom:16px;
}

.footer-links{
  display:flex;
  flex-direction:column;
  gap:12px;
}

.footer-links a{
  font-size:14px;
  color:rgba(244,241,234,.86);
  transition:color .2s var(--ease);
  width:fit-content;
}
.footer-links a:hover{color:var(--lime);}

.footer-info p{
  font-size:14px;
  line-height:1.85;
  color:rgba(244,241,234,.72);
  margin-bottom:10px;
}
.footer-info strong{
  color:rgba(244,241,234,.95);
  font-weight:700;
}

.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.16);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:13px;
  color:rgba(244,241,234,.62);
  flex-wrap:wrap;
}
.footer-bottom .domain{
  font-family:var(--font-num);
  letter-spacing:.06em;
}

/* ---------- 动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .52s var(--ease),transform .52s var(--ease);
}
.reveal.is-in{
  opacity:1;
  transform:none;
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 22px;}
  .guide-layout{gap:40px;grid-template-columns:270px minmax(0,1fr);}
  .hero-grid{gap:36px;}
}

@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-actions .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-shell{justify-content:space-between;padding:0 12px 0 16px;}
  .brand-name{font-size:15px;}

  main{padding-top:calc(var(--nav-h) + 16px + 34px);}

  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-media{order:2;}
  .page-hero h1{font-size:clamp(30px,6vw,42px);}
  .hero-lead{max-width:none;}

  .guide-section{padding-top:72px;}
  .guide-layout{grid-template-columns:1fr;gap:32px;}
  .guide-aside{position:static;}
  .aside-card{padding:22px 20px;}
  .guide-row{grid-template-columns:1fr;gap:20px;padding:28px 0;}
  .guide-row.is-flip .guide-media{order:0;}
  .guide-row.is-flip .guide-text{order:0;}

  .faq-section,.related{padding-top:72px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{margin-top:72px;padding:64px 0;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;}
  .cta-inner h2{max-width:none;}

  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}

@media (max-width:767px){
  .container{padding:0 20px;}
  .hero-actions .btn{width:100%;}
  .page-hero h1{font-size:clamp(28px,7.4vw,36px);}
  .hero-lead{font-size:16px;}
  .guide-text h3{font-size:18px;}
  .faq-q h3{font-size:16px;}
  .faq-a p{padding-left:40px;padding-right:0;}
  .related-grid{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

@media (max-width:480px){
  .container{padding:0 16px;}
  .nav-shell{padding:0 10px 0 14px;}
  .brand-name{font-size:14px;}
  .btn{padding:13px 20px;font-size:14px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .faq-q{gap:12px;}
  .faq-idx{width:20px;}
}

@media (prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none;}
  .hero-media:hover img,
  .guide-media:hover img,
  .rel-card:hover .rel-thumb img{transform:none;}
}

/* roulang page: article */
:root{
  --paper:#F4F1EA;
  --paper-2:#EAE6DC;
  --ink:#15171A;
  --ink-70:#4B4E54;
  --pine:#123B2E;
  --lime:#C9F24D;
  --ember:#E2532F;
  --line:rgba(21,23,26,.12);
  --line-strong:rgba(21,23,26,.24);
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(21,23,26,.06),0 8px 24px -12px rgba(21,23,26,.18);
  --shadow-2:0 24px 60px -28px rgba(21,23,26,.28);
  --ease:cubic-bezier(.22,1,.36,1);
  --nav-height:64px;
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Space Grotesk","Inter",ui-monospace,SFMono-Regular,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:4px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
.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;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:700;line-height:1;
  padding:14px 26px;border-radius:var(--r-pill);
  border:1px solid transparent;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn svg{width:14px;height:14px;transition:transform .2s var(--ease);}
.btn:hover svg{transform:translateX(4px);}
.btn-primary{background:var(--lime);color:var(--ink);}
.btn-primary:hover{background:var(--ink);color:var(--lime);transform:translateY(-1px);box-shadow:var(--shadow-1);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--ink);}
.btn-ghost:hover{border-color:var(--ink);background:var(--paper-2);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:11px 20px;font-size:14px;}
.link-underline{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:700;
  background-image:linear-gradient(var(--ink),var(--ink));
  background-position:0 100%;background-repeat:no-repeat;background-size:0 1px;
  transition:background-size .28s var(--ease),color .2s var(--ease);
  padding-bottom:2px;
}
.link-underline:hover{background-size:100% 1px;}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  padding:16px 20px 0;
  display:flex;justify-content:center;
  pointer-events:none;
}
.nav-shell{
  pointer-events:auto;
  width:100%;max-width:1200px;height:var(--nav-height);
  display:flex;align-items:center;gap:20px;
  padding:0 12px 0 18px;
  background:rgba(244,241,234,.72);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:var(--r-pill);
  box-shadow:var(--shadow-1);
  transition:height .2s var(--ease),background .2s var(--ease);
}
.site-header.is-scrolled .nav-shell{height:56px;background:rgba(244,241,234,.94);}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:26px;height:26px;border-radius:8px;background:var(--ink);
}
.brand-mark svg{color:var(--lime);}
.brand-name{font-size:17px;font-weight:900;letter-spacing:.02em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:auto;margin-right:auto;}
.nav-link{
  position:relative;font-size:16px;font-weight:500;color:var(--ink);
  padding:6px 0;transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:-2px;
  width:16px;height:4px;border-radius:2px;background:var(--lime);
  transform:translateX(-50%) scaleX(0);transform-origin:center;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--pine);}
.nav-link:hover::after,.nav-link.is-active::after{transform:translateX(-50%) scaleX(1);}
.nav-link.is-active{font-weight:700;}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-cta{padding:11px 22px;font-size:14px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:50%;
  background:transparent;border:1px solid var(--line-strong);
  cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s var(--ease);}
.nav-toggle:hover{border-color:var(--ink);}

/* ---------- 移动抽屉 ---------- */
.nav-drawer{
  position:fixed;inset:0;z-index:120;
  background:var(--paper);
  display:flex;flex-direction:column;
  padding:26px 22px 28px;
  transform:translateY(-102%);
  transition:transform .34s var(--ease);
  pointer-events:none;
}
.nav-drawer.is-open{transform:translateY(0);pointer-events:auto;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;}
.drawer-close{
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line-strong);background:transparent;
  font-size:20px;line-height:1;color:var(--ink);cursor:pointer;
}
.drawer-close:hover{border-color:var(--ink);background:var(--paper-2);}
.drawer-links{display:flex;flex-direction:column;gap:4px;flex:1;}
.drawer-links a{
  font-size:20px;font-weight:700;padding:14px 4px;
  border-bottom:1px solid var(--line);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.drawer-links a:hover,.drawer-links a.is-active{color:var(--pine);padding-left:10px;}
.drawer-cta{width:100%;margin-top:20px;}

/* ---------- 文章头部 ---------- */
.article-top{padding-top:calc(var(--nav-height) + 62px);}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:12px;letter-spacing:.02em;color:var(--ink-70);
  margin-bottom:26px;
}
.breadcrumb a{color:var(--ink-70);transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--ink);}
.breadcrumb .sep{color:var(--line-strong);}
.breadcrumb .current{color:var(--ink-70);}
.article-head{max-width:860px;margin-bottom:44px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:700;letter-spacing:.04em;
  background:var(--lime);color:var(--ink);
  padding:5px 13px;border-radius:var(--r-pill);
}
.article-head h1{
  font-family:var(--font-display);
  font-size:clamp(28px,4vw,44px);
  font-weight:700;line-height:1.24;letter-spacing:.01em;
  margin:18px 0 20px;
}
.meta-row{
  display:flex;align-items:center;flex-wrap:wrap;gap:14px;
  font-size:12px;color:var(--ink-70);letter-spacing:.03em;
}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:6px;}
.meta-row .meta-num{font-family:var(--font-num);letter-spacing:.06em;color:var(--ink);}
.meta-row .divider{width:1px;height:12px;background:var(--line-strong);}
.article-rule{height:1px;background:var(--line);margin-bottom:44px;}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,760px) 240px;
  gap:64px;
  justify-content:center;
  align-items:start;
  padding-bottom:20px;
}
.article-panel{min-width:0;}

/* ---------- 正文排版 ---------- */
.article-body{font-size:17px;line-height:1.9;color:var(--ink);}
.article-body>*+*{margin-top:1.2em;}
.article-body p{font-size:17px;line-height:1.9;margin:0 0 1.2em;}
.article-body strong{font-weight:700;}
.article-body h2{
  position:relative;
  font-family:var(--font-display);
  font-size:clamp(22px,2.4vw,30px);
  font-weight:700;line-height:1.35;
  margin:2.4em 0 1em;padding-left:20px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.34em;
  width:4px;height:20px;border-radius:2px;background:var(--lime);
}
.article-body h3{
  font-size:19px;font-weight:700;line-height:1.5;
  margin:1.9em 0 .8em;
}
.article-body h4{font-size:17px;font-weight:700;margin:1.6em 0 .6em;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em;line-height:1.9;}
.article-body ul{list-style:none;}
.article-body ul li{position:relative;padding-left:2px;}
.article-body ul li::before{
  content:"";position:absolute;left:-1.1em;top:.72em;
  width:7px;height:7px;border-radius:2px;background:var(--lime);
}
.article-body ol{list-style:decimal;}
.article-body ol li{padding-left:2px;}
.article-body ol li::marker{color:var(--ink-70);font-family:var(--font-num);font-weight:700;}
.article-body li+li{margin-top:.4em;}
.article-body blockquote{
  margin:1.8em 0;padding:20px 22px;
  background:var(--paper-2);
  border-left:3px solid var(--lime);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--ink);
  font-size:16.5px;line-height:1.85;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{width:100%;height:auto;border-radius:var(--r-md);margin:1.6em 0 .6em;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{
  font-size:13px;color:var(--ink-70);text-align:center;
  line-height:1.7;margin-top:.5em;
}
.article-body a{
  color:var(--ink);
  border-bottom:1px solid var(--line-strong);
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.article-body a:hover{background:var(--lime);border-bottom-color:var(--lime);}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.8em 0;
  font-size:15px;line-height:1.75;
}
.article-body thead th{
  background:var(--paper-2);text-align:left;font-weight:700;
  padding:12px 14px;border-bottom:1px solid var(--line-strong);
}
.article-body tbody td{
  padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top;
}
.article-body tbody tr:nth-child(even){background:rgba(234,230,220,.5);}
.article-body pre{
  background:var(--ink);color:#E9E5DA;
  border-radius:var(--r-sm);
  padding:18px 20px;overflow-x:auto;
  font-family:var(--font-num);font-size:14px;line-height:1.7;
  margin:1.6em 0;
}
.article-body code{
  font-family:var(--font-num);font-size:.92em;
  background:var(--paper-2);padding:2px 6px;border-radius:4px;
}
.article-body pre code{background:transparent;padding:0;color:inherit;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0;}

/* ---------- 正文空态 ---------- */
.article-empty{
  min-height:260px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border:1px dashed var(--line-strong);border-radius:var(--r-md);
  padding:48px 24px;text-align:center;background:rgba(234,230,220,.4);
}
.article-empty .empty-icon{
  width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;color:var(--ink-70);
}
.article-empty p{font-size:15px;color:var(--ink-70);}

/* ---------- 文末标签与操作 ---------- */
.article-foot{margin-top:56px;padding-top:28px;border-top:1px solid var(--line);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.tag{
  font-size:12px;letter-spacing:.03em;
  background:var(--paper-2);color:var(--ink);
  padding:7px 14px;border-radius:var(--r-pill);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.tag:hover{background:var(--ink);color:var(--paper);}
.article-actions{
  display:flex;align-items:center;flex-wrap:wrap;gap:18px;
  justify-content:space-between;
}
.action-left{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.share-row{display:inline-flex;align-items:center;gap:8px;}
.share-row .share-label{font-size:12px;color:var(--ink-70);letter-spacing:.05em;}
.share-dot{
  width:32px;height:32px;border-radius:50%;
  border:1px solid var(--line-strong);background:transparent;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-70);cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.share-dot:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-1px);}

/* ---------- 目录 ---------- */
.article-toc{
  position:sticky;top:calc(var(--nav-height) + 42px);
  border-left:1px solid var(--line);
  padding-left:20px;
}
.toc-title{
  font-size:12px;letter-spacing:.1em;color:var(--ink-70);
  font-weight:700;margin-bottom:14px;
}
.toc-list{display:flex;flex-direction:column;gap:2px;position:relative;}
.toc-item a{
  position:relative;display:block;
  font-size:13px;line-height:1.6;color:var(--ink-70);
  padding:6px 0 6px 12px;
  transition:color .2s var(--ease);
}
.toc-item a::before{
  content:"";position:absolute;left:-21px;top:50%;
  width:3px;height:0;background:var(--lime);border-radius:2px;
  transform:translateY(-50%);
  transition:height .22s var(--ease);
}
.toc-item.toc-h3 a{padding-left:24px;font-size:12.5px;opacity:.86;}
.toc-item a:hover{color:var(--ink);}
.toc-item a.is-current{color:var(--ink);font-weight:700;}
.toc-item a.is-current::before{height:16px;}

/* ---------- 相关推荐 ---------- */
.related-section{padding:96px 0 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px;margin-bottom:32px;flex-wrap:wrap;
}
.section-head h2{
  font-family:var(--font-display);
  font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.25;
}
.section-head p{font-size:14px;color:var(--ink-70);margin-top:8px;}
.related-list{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;
}
.related-card{
  display:flex;flex-direction:column;
  background:var(--paper);
  border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;
  transition:border-color .32s var(--ease),transform .32s var(--ease),box-shadow .32s var(--ease);
}
.related-card:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:var(--shadow-1);}
.related-figure{overflow:hidden;aspect-ratio:16/10;background:var(--paper-2);}
.related-figure img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease);}
.related-card:hover .related-figure img{transform:scale(1.04);}
.related-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1;}
.related-body .chip{
  align-self:flex-start;
  font-size:11px;letter-spacing:.06em;font-weight:700;
  background:var(--paper-2);color:var(--ink);
  padding:4px 10px;border-radius:var(--r-pill);
}
.related-body h3{font-size:18px;font-weight:700;line-height:1.45;}
.related-body p{font-size:13.5px;line-height:1.7;color:var(--ink-70);}
.related-more{
  margin-top:auto;font-size:13px;font-weight:700;color:var(--ink);
  display:inline-flex;align-items:center;gap:6px;padding-top:8px;
}
.related-card:hover .related-more svg{transform:translateX(4px);}
.related-more svg{width:13px;height:13px;transition:transform .28s var(--ease);}

/* ---------- 收口 CTA ---------- */
.closing-cta{margin-top:96px;background:var(--paper-2);padding:80px 0;}
.closing-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.closing-inner h2{
  font-family:var(--font-display);
  font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.3;max-width:16em;
}
.closing-inner p{font-size:15px;color:var(--ink-70);margin-top:10px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--pine);color:var(--paper);padding:72px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--lime);width:26px;height:26px;border-radius:8px;}
.footer-brand .brand-name{font-size:17px;font-weight:900;color:var(--paper);}
.footer-about{font-size:13.5px;line-height:1.85;color:rgba(244,241,234,.72);max-width:24em;}
.footer-title{
  font-size:12px;font-weight:700;letter-spacing:.08em;
  color:rgba(244,241,234,.58);margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  font-size:14px;color:rgba(244,241,234,.86);
  transition:color .2s var(--ease),transform .2s var(--ease);
  display:inline-block;
}
.footer-links a:hover{color:var(--lime);transform:translateX(2px);}
.footer-info p{font-size:13px;line-height:1.95;color:rgba(244,241,234,.72);}
.footer-info strong{color:var(--paper);font-weight:700;}
.footer-bottom{
  margin-top:52px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.16);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:rgba(244,241,234,.6);
}
.footer-bottom .domain{font-family:var(--font-num);letter-spacing:.06em;}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .52s var(--ease),transform .52s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,760px);gap:0;}
  .article-toc{display:none;}
}
@media (max-width:1023px){
  .nav-links,.nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .nav-shell{height:56px;padding:0 10px 0 16px;gap:12px;}
  .brand-name{font-size:15.5px;}
  .site-header.is-scrolled .nav-shell{height:52px;}
  .article-top{padding-top:calc(56px + 62px);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .related-list{grid-template-columns:repeat(2,minmax(0,1fr));}
  .related-card:last-child{display:none;}
  .closing-cta{padding:64px 0;margin-top:72px;}
  .related-section{padding-top:72px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .article-head{margin-bottom:32px;}
  .article-rule{margin-bottom:32px;}
  .article-body,.article-body p{font-size:16.5px;}
  .related-list{grid-template-columns:1fr;}
  .related-card:last-child{display:flex;}
  .closing-inner{flex-direction:column;align-items:flex-start;}
  .closing-inner .btn{width:100%;}
  .article-actions{flex-direction:column;align-items:flex-start;gap:20px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .site-header{padding:12px 12px 0;}
  .brand-name{font-size:14.5px;letter-spacing:0;}
  .brand-mark{width:24px;height:24px;border-radius:7px;}
  .article-head h1{font-size:clamp(24px,6.4vw,30px);}
  .meta-row{gap:10px;font-size:11.5px;}
  .btn{width:100%;}
  .nav-toggle{width:40px;height:40px;}
  .action-left{width:100%;flex-direction:column;align-items:flex-start;}
  .related-list{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .closing-cta{padding:56px 0;margin-top:56px;}
  .related-section{padding-top:56px;}
  .site-footer{padding:56px 0 24px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
  .btn:hover,.related-card:hover{transform:none;}
}

/* roulang page: category2 */
:root{
  --paper:#F4F1EA;
  --paper-2:#EAE6DC;
  --ink:#15171A;
  --ink-70:#4B4E54;
  --pine:#123B2E;
  --lime:#C9F24D;
  --ember:#E2532F;
  --line:rgba(21,23,26,.12);
  --line-strong:rgba(21,23,26,.24);
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(21,23,26,.06), 0 8px 24px -12px rgba(21,23,26,.18);
  --shadow-2:0 24px 60px -28px rgba(21,23,26,.28);
  --font-display:"Noto Serif SC","Source Han Serif SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Space Grotesk","Inter",system-ui,sans-serif;
  --ease:cubic-bezier(.22,1,.36,1);
  --nav-h:64px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}

/* ============ 悬浮胶囊导航 ============ */
.site-header{
  position:fixed;
  top:16px;
  left:0;
  right:0;
  z-index:120;
  display:flex;
  justify-content:center;
  padding:0 24px;
  transition:top .2s var(--ease);
}
.nav-shell{
  width:100%;
  max-width:1200px;
  height:var(--nav-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:0 12px 0 18px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:rgba(244,241,234,.72);
  backdrop-filter:blur(14px) saturate(1.2);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  box-shadow:var(--shadow-1);
  transition:height .2s var(--ease),background .2s var(--ease);
}
.site-header.is-scrolled .nav-shell{
  height:56px;
  background:rgba(244,241,234,.94);
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:900;
  letter-spacing:.02em;
  white-space:nowrap;
}
.brand-mark{
  width:26px;
  height:26px;
  border-radius:8px;
  background:var(--ink);
  display:grid;
  place-items:center;
  flex:none;
}
.brand-mark svg{display:block;}
.nav-links{
  display:flex;
  align-items:center;
  gap:28px;
}
.nav-link{
  position:relative;
  font-size:15.5px;
  font-weight:500;
  color:var(--ink-70);
  padding:6px 2px;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:-4px;
  width:16px;
  height:4px;
  border-radius:2px;
  background:var(--lime);
  transform:translateX(-50%) scaleX(0);
  transform-origin:center;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after,
.nav-link.is-active::after{transform:translateX(-50%) scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:700;}
.nav-actions{display:flex;align-items:center;gap:10px;}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 26px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  line-height:1.2;
  border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
}
.btn svg{transition:transform .2s var(--ease);}
.btn-primary{background:var(--lime);color:var(--ink);}
.btn-primary:hover{background:var(--ink);color:var(--lime);transform:translateY(-1px);}
.btn-primary:hover svg{transform:translateX(4px);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-strong);}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn:active{transform:translateY(1px);}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:var(--ink);
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.5px) rotate(-45deg);}

/* 抽屉 */
.nav-drawer{
  position:fixed;
  inset:0;
  z-index:110;
  background:var(--paper);
  padding:110px 24px 32px;
  display:flex;
  flex-direction:column;
  gap:8px;
  opacity:0;
  visibility:hidden;
  transform:translateY(-12px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
}
.nav-drawer.is-open{opacity:1;visibility:visible;transform:none;}
.nav-drawer a.drawer-link{
  font-size:20px;
  font-weight:700;
  padding:16px 4px;
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.nav-drawer a.drawer-link.is-active{color:var(--ink);}
.nav-drawer a.drawer-link.is-active::after{
  content:"";
  width:8px;height:8px;border-radius:50%;background:var(--lime);
}
.nav-drawer .btn{margin-top:20px;width:100%;}

/* ============ 通用板块 ============ */
main{padding-top:calc(var(--nav-h) + 16px);}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:32px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.12em;
  font-weight:700;
  color:var(--ink-70);
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";
  width:8px;height:8px;border-radius:50%;
  background:var(--lime);
  flex:none;
}
h1{
  font-family:var(--font-display);
  font-size:clamp(34px,4.6vw,58px);
  font-weight:700;
  line-height:1.16;
  letter-spacing:.01em;
}
h2{
  font-size:clamp(24px,2.6vw,36px);
  font-weight:900;
  line-height:1.25;
  letter-spacing:-.01em;
}
h3{font-size:19px;font-weight:700;line-height:1.5;}
.lead{
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink-70);
  max-width:58ch;
}
.muted{color:var(--ink-70);}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:700;
  background-image:linear-gradient(var(--ink),var(--ink));
  background-repeat:no-repeat;
  background-position:0 100%;
  background-size:0 1px;
  padding-bottom:2px;
  transition:background-size .28s var(--ease),color .2s var(--ease);
}
.text-link:hover{background-size:100% 1px;}
.text-link svg{transition:transform .2s var(--ease);}
.text-link:hover svg{transform:translateX(4px);}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:64px 0 56px;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  opacity:.07;
  pointer-events:none;
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(21,23,26,.03) 0 1px,transparent 1px 7px);
  pointer-events:none;
}
.hero .container{position:relative;z-index:2;}
.hero-inner{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:end;
}
.hero h1{margin:18px 0 20px;}
.hero h1 em{
  font-style:normal;
  background-image:linear-gradient(transparent 62%,var(--lime) 62%);
  background-repeat:no-repeat;
  background-size:100% .55em;
  padding:0 2px;
}
.hero-lead{max-width:56ch;}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:8px 15px;
  border-radius:var(--r-pill);
  background:var(--paper-2);
  border:1px solid var(--line);
  font-size:13px;
  font-weight:500;
  color:var(--ink-70);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.chip:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.hero-meta{
  border-left:1px solid var(--line-strong);
  padding-left:24px;
  display:flex;
  flex-direction:column;
  gap:18px;
}
.hero-meta-item{display:flex;flex-direction:column;gap:2px;}
.hero-meta-item .num{
  font-family:var(--font-num);
  font-size:28px;
  font-weight:700;
  line-height:1.1;
  letter-spacing:-.02em;
}
.hero-meta-item .lbl{font-size:12px;letter-spacing:.06em;color:var(--ink-70);}
.hero-meta-divider{height:1px;background:var(--line);}

/* ============ 主推专题大图卡 ============ */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.feature-card{
  position:relative;
  display:block;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:16/9;
  background:var(--paper-2);
}
.feature-card img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .32s var(--ease);
}
.feature-card::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(to top,rgba(18,23,26,.82) 0%,rgba(18,23,26,.42) 42%,rgba(18,23,26,.04) 72%);
}
.feature-card:hover img{transform:scale(1.04);}
.feature-body{
  position:absolute;
  left:26px;right:26px;bottom:24px;
  z-index:2;
  color:var(--paper);
}
.badge-lime{
  display:inline-block;
  padding:4px 11px;
  border-radius:var(--r-pill);
  background:var(--lime);
  color:var(--ink);
  font-size:12px;
  font-weight:700;
  letter-spacing:.02em;
}
.feature-body h3{
  font-size:22px;
  font-weight:700;
  margin:12px 0 6px;
  line-height:1.4;
}
.feature-body p{
  font-size:14px;
  line-height:1.7;
  color:rgba(244,241,234,.82);
  max-width:36ch;
}
.feature-arrow{
  position:absolute;
  right:22px;top:22px;
  width:38px;height:38px;
  border-radius:50%;
  background:rgba(244,241,234,.16);
  border:1px solid rgba(244,241,234,.4);
  display:grid;place-items:center;
  z-index:2;
  color:var(--paper);
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.feature-card:hover .feature-arrow{background:var(--lime);color:var(--ink);transform:translateX(4px);}

/* ============ 编号榜单 ============ */
.rank-list{border-top:1px solid var(--line);}
.rank-item{
  display:grid;
  grid-template-columns:78px 1fr 44px;
  align-items:center;
  gap:24px;
  padding:26px 8px;
  border-bottom:1px solid var(--line);
  transition:transform .3s var(--ease),background .2s var(--ease);
}
.rank-item:hover{transform:translateX(4px);background:rgba(234,230,220,.5);}
.rank-num{
  font-family:var(--font-num);
  font-size:46px;
  font-weight:700;
  line-height:1;
  letter-spacing:-.03em;
  color:var(--lime);
  transition:color .2s var(--ease);
}
.rank-item:hover .rank-num{color:var(--ink);}
.rank-main h3{font-size:20px;margin-bottom:4px;}
.rank-main p{font-size:14.5px;color:var(--ink-70);line-height:1.75;}
.rank-tag{
  display:inline-block;
  margin-left:10px;
  padding:2px 9px;
  border-radius:var(--r-pill);
  border:1px solid var(--pine);
  color:var(--pine);
  font-size:11px;
  font-weight:700;
  vertical-align:middle;
}
.rank-tag.is-hot{border-color:var(--ember);color:var(--ember);}
.rank-arrow{
  width:40px;height:40px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  display:grid;place-items:center;
  color:var(--ink);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.rank-item:hover .rank-arrow{background:var(--ink);color:var(--lime);border-color:var(--ink);}

/* ============ 深色说明区 ============ */
.section-pine{
  background:var(--pine);
  color:var(--paper);
  padding:72px 0;
}
.section-pine h2{color:var(--paper);}
.pine-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
  margin-top:40px;
  border-top:1px solid rgba(244,241,234,.18);
}
.pine-cell{
  padding:32px 28px 8px;
  border-left:1px solid rgba(244,241,234,.18);
}
.pine-cell:first-child{border-left:0;padding-left:0;}
.pine-cell .idx{
  font-family:var(--font-num);
  font-size:13px;
  letter-spacing:.14em;
  color:var(--lime);
  font-weight:700;
}
.pine-cell h3{
  font-size:18px;
  margin:10px 0 8px;
  color:var(--paper);
}
.pine-cell p{
  font-size:14px;
  line-height:1.8;
  color:rgba(244,241,234,.74);
}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);max-width:880px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:18px;
  padding:22px 4px;
  text-align:left;
}
.faq-q .qnum{
  font-family:var(--font-num);
  font-size:14px;
  font-weight:700;
  color:var(--ink-70);
  flex:none;
  width:24px;
}
.faq-q .qtext{
  flex:1;
  font-size:18px;
  font-weight:700;
  line-height:1.5;
}
.faq-icon{
  position:relative;
  width:22px;height:22px;
  flex:none;
  transition:transform .2s var(--ease);
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink);
  border-radius:2px;
}
.faq-icon::before{left:0;top:10px;width:22px;height:2px;}
.faq-icon::after{top:0;left:10px;height:22px;width:2px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .28s var(--ease);
}
.faq-a p{
  padding:0 4px 24px 42px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-70);
}
.faq-item.is-open .faq-a{max-height:260px;}

/* ============ 相关阅读 ============ */
.rel-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.rel-card{
  display:flex;
  flex-direction:column;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:var(--paper);
  overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease);
}
.rel-card:hover{border-color:var(--line-strong);box-shadow:var(--shadow-1);transform:translateY(-3px);}
.rel-thumb{
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--paper-2);
}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease);}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}
.rel-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:8px;flex:1;}
.rel-body h3{font-size:17px;line-height:1.55;}
.rel-body p{font-size:13.5px;color:var(--ink-70);line-height:1.75;}
.rel-meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  color:var(--ink-70);
  letter-spacing:.04em;
}
.rel-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line-strong);}
.rel-meta .num{font-family:var(--font-num);}

/* ============ 收口 CTA ============ */
.cta-band{
  background:var(--paper-2);
  padding:80px 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
}
.cta-inner h2{max-width:20ch;}
.cta-inner .cta-copy p{margin-top:12px;font-size:15px;color:var(--ink-70);max-width:44ch;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  z-index:140;
  background:var(--pine);
  color:var(--paper);
  padding:72px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:900;letter-spacing:.02em;}
.footer-brand .brand-mark{background:var(--lime);border-radius:8px;width:26px;height:26px;display:grid;place-items:center;flex:none;}
.footer-about{
  margin-top:14px;
  font-size:13.5px;
  line-height:1.85;
  color:rgba(244,241,234,.7);
  max-width:32ch;
}
.footer-title{
  font-size:12px;
  letter-spacing:.08em;
  font-weight:700;
  color:rgba(244,241,234,.55);
  margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  font-size:14px;
  color:rgba(244,241,234,.85);
  transition:color .2s var(--ease);
  width:fit-content;
}
.footer-links a:hover{color:var(--lime);}
.footer-info p{
  font-size:13.5px;
  line-height:1.9;
  color:rgba(244,241,234,.72);
}
.footer-info strong{color:rgba(244,241,234,.95);font-weight:700;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.16);
  padding-top:22px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:13px;
  color:rgba(244,241,234,.62);
}
.footer-bottom .domain{
  font-family:var(--font-num);
  letter-spacing:.06em;
}

/* 入场动效 */
.reveal{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .52s var(--ease),transform .52s var(--ease);
}
.reveal.is-visible{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 22px;}
  .nav-links{gap:22px;}
  .hero-inner{gap:36px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .nav-actions .btn-primary{display:none;}
  .nav-shell{height:60px;}
  .hero-inner{grid-template-columns:1fr;align-items:start;gap:32px;}
  .hero-meta{
    border-left:0;
    border-top:1px solid var(--line);
    padding:24px 0 0;
    flex-direction:row;
    gap:0;
    justify-content:space-between;
    align-items:center;
  }
  .hero-meta-divider{width:1px;height:36px;background:var(--line);}
  .hero-meta-item{flex:1;align-items:flex-start;padding:0 8px;}
  .hero-meta-item:first-child{padding-left:0;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .pine-grid{grid-template-columns:1fr;}
  .pine-cell{border-left:0;border-top:1px solid rgba(244,241,234,.18);padding:26px 0 6px;}
  .pine-cell:first-child{border-top:0;padding-top:0;}
  .feature-body h3{font-size:19px;}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .site-header{padding:0 14px;top:12px;}
  .brand{font-size:15px;}
  .hero{padding:40px 0 32px;}
  .hero-chips{margin-top:20px;}
  .feature-grid{grid-template-columns:1fr;}
  .feature-body{left:18px;right:18px;bottom:18px;}
  .feature-body h3{font-size:18px;}
  .rank-item{grid-template-columns:52px 1fr;gap:14px;padding:22px 4px;}
  .rank-num{font-size:32px;}
  .rank-arrow{display:none;}
  .rank-main h3{font-size:17px;}
  .rank-main p{font-size:13.5px;}
  .rel-grid{grid-template-columns:1fr;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;}
  .cta-band{padding:56px 0;}
  .faq-q .qtext{font-size:16px;}
  .faq-a p{padding-left:0;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .section{padding:56px 0;}
}
@media (max-width:480px){
  .container{padding:0 16px;}
  .nav-shell{padding:0 8px 0 14px;}
  .hero h1{font-size:31px;}
  .hero-meta{flex-wrap:wrap;gap:16px;}
  .hero-meta-divider{display:none;}
  .hero-meta-item{flex:1 1 40%;}
  .btn{width:100%;padding:14px 20px;}
  .btn-sm{width:auto;}
  .cta-actions{width:100%;flex-direction:column;}
  .footer-grid{grid-template-columns:1fr;}
  .chip{font-size:12px;padding:7px 12px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --paper:#F4F1EA;
  --paper-2:#EAE6DC;
  --ink:#15171A;
  --ink-70:#4B4E54;
  --pine:#123B2E;
  --lime:#C9F24D;
  --ember:#E2532F;
  --line:rgba(21,23,26,.12);
  --line-strong:rgba(21,23,26,.24);
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(21,23,26,.06),0 8px 24px -12px rgba(21,23,26,.18);
  --shadow-2:0 24px 60px -28px rgba(21,23,26,.28);
  --ease:cubic-bezier(.22,1,.36,1);
  --font-display:"Noto Serif SC","Source Han Serif SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Space Grotesk","Inter",sans-serif;
  --nav-h:64px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,figure,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{
  position:fixed;top:16px;left:0;right:0;z-index:80;
  padding:0 24px;
  pointer-events:none;
}
.nav-shell{
  max-width:1200px;margin:0 auto;
  height:var(--nav-h);
  display:flex;align-items:center;gap:20px;
  padding:0 10px 0 18px;
  border-radius:var(--r-pill);
  background:rgba(244,241,234,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  pointer-events:auto;
  transition:height .2s var(--ease),background .2s var(--ease);
}
.site-header.is-scrolled .nav-shell{
  height:56px;
  background:rgba(244,241,234,.94);
}
.brand{
  display:flex;align-items:center;gap:10px;
  margin-right:auto;min-width:0;
  font-weight:900;font-size:16px;letter-spacing:.02em;
  color:var(--ink);white-space:nowrap;
}
.brand-mark{
  width:24px;height:24px;flex:0 0 auto;
  border-radius:7px;
  background:var(--ink);
  color:var(--lime);
  display:grid;place-items:center;
}
.brand-name{overflow:hidden;text-overflow:ellipsis}

.nav-links{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;
  font-size:16px;font-weight:500;
  color:var(--ink);
  padding:4px 0;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:-6px;
  width:16px;height:4px;border-radius:2px;
  background:var(--lime);
  transform:translateX(-50%) scaleX(0);
  transform-origin:center;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--pine)}
.nav-link.is-active{color:var(--ink);font-weight:700}
.nav-link.is-active::after{transform:translateX(-50%) scaleX(1)}

.nav-cta{flex:0 0 auto}
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  align-items:center;justify-content:center;
  flex-direction:column;gap:5px;
  flex:0 0 auto;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.nav-toggle span{
  display:block;width:18px;height:2px;border-radius:2px;
  background:var(--ink);
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle.is-open span:nth-child(1){transform:translateY(3.5px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){transform:translateY(-3.5px) rotate(-45deg)}

.nav-drawer{
  position:fixed;inset:0;z-index:70;
  background:var(--paper);
  padding:104px 24px 32px;
  display:flex;flex-direction:column;gap:6px;
  opacity:0;visibility:hidden;transform:translateY(-12px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
  overflow-y:auto;
}
.nav-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.drawer-link{
  font-size:20px;font-weight:700;line-height:1.4;
  padding:16px 0;
  border-bottom:1px solid var(--line);
  transition:color .2s var(--ease);
}
.drawer-link:hover,.drawer-link.is-active{color:var(--pine)}
.drawer-cta{margin-top:28px;justify-content:center;width:100%}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;line-height:1;
  border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn .arw{transition:transform .2s var(--ease)}
.btn:hover .arw{transform:translateX(4px)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--lime);color:var(--ink)}
.btn-primary:hover{background:var(--ink);color:var(--lime)}
.btn-ghost{border-color:var(--line-strong);color:var(--ink);background:transparent}
.btn-ghost:hover{border-color:var(--ink);background:var(--ink);color:var(--paper)}
.btn-sm{padding:11px 20px;font-size:14px}

.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:700;color:var(--ink);
  background-image:linear-gradient(var(--ink),var(--ink));
  background-repeat:no-repeat;
  background-size:0 1px;
  background-position:0 100%;
  transition:background-size .28s var(--ease),color .2s var(--ease);
}
.link-arrow:hover{background-size:100% 1px;color:var(--pine)}
.link-arrow:hover .arw{transform:translateX(4px)}
.link-arrow .arw{transition:transform .2s var(--ease)}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:32px;flex-wrap:wrap;
}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.12em;color:var(--ink-70);
  margin-bottom:12px;text-transform:uppercase;
}
.dot{width:8px;height:8px;border-radius:50%;background:var(--lime);flex:0 0 auto}
.section-title{
  font-size:clamp(24px,2.6vw,36px);
  font-weight:900;line-height:1.25;letter-spacing:.01em;
}
.section-sub{font-size:15px;color:var(--ink-70);margin-top:10px;max-width:640px}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  padding:132px 0 56px;
  background-color:var(--paper);
  background-image:repeating-linear-gradient(45deg,rgba(21,23,26,.03) 0 1px,transparent 1px 12px);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-140px;top:60px;
  width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,242,77,.32),rgba(201,242,77,0) 70%);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.12fr .88fr;
  gap:48px;align-items:center;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:var(--paper-2);border:1px solid var(--line);
  font-size:12px;letter-spacing:.1em;color:var(--ink-70);
  margin-bottom:20px;
}
.page-hero h1{
  font-family:var(--font-display);
  font-size:clamp(34px,4.6vw,56px);
  font-weight:700;line-height:1.15;letter-spacing:.01em;
  margin-bottom:20px;
}
.page-hero h1 .hl{
  background:linear-gradient(transparent 62%,rgba(201,242,77,.85) 62%);
  padding:0 2px;
}
.hero-lede{
  font-size:17px;line-height:1.85;color:var(--ink-70);
  max-width:560px;margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:0;
  border-top:1px solid var(--line);padding-top:22px;
}
.fact{
  padding:0 24px;border-left:1px solid var(--line);
}
.fact:first-child{padding-left:0;border-left:0}
.fact-num{
  font-family:var(--font-num);font-size:28px;font-weight:700;
  line-height:1.1;display:block;
}
.fact-label{font-size:12px;letter-spacing:.06em;color:var(--ink-70);margin-top:4px;display:block}
.hero-media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-2);
  aspect-ratio:4/3;
  border:1px solid var(--line);
}
.hero-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.hero-media:hover img{transform:scale(1.04)}
.hero-media figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:40px 20px 16px;
  font-size:13px;color:#F4F1EA;
  background:linear-gradient(to top,rgba(18,23,26,.72),rgba(18,23,26,0));
}

/* ---------- 答疑主体布局 ---------- */
.qa-section{padding:8px 0 96px}
.qa-layout{
  display:grid;grid-template-columns:280px minmax(0,1fr);
  gap:48px;align-items:start;
}
.anchor-nav{
  position:sticky;top:104px;
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:20px;
}
.anchor-title{
  font-size:12px;letter-spacing:.08em;color:var(--ink-70);
  margin-bottom:12px;font-weight:700;
}
.anchor-link{
  display:block;
  padding:10px 16px;margin-top:8px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  font-size:14px;font-weight:700;line-height:1.5;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.anchor-link:hover{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.anchor-link.is-active{background:var(--ink);border-color:var(--ink);color:var(--lime)}
.anchor-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  margin-top:18px;padding:12px 16px;
  border-radius:var(--r-pill);
  background:var(--lime);color:var(--ink);
  font-size:14px;font-weight:700;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.anchor-cta:hover{background:var(--ink);color:var(--lime)}

.qa-block{
  padding-bottom:64px;margin-bottom:64px;
  border-bottom:1px solid var(--line);
}
.qa-block:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.qa-block-head{margin-bottom:24px}
.qa-index{
  font-family:var(--font-num);font-size:13px;font-weight:700;
  letter-spacing:.14em;color:var(--ink-70);
  display:block;margin-bottom:10px;
}
.qa-block h2{
  font-size:clamp(24px,2.6vw,32px);
  font-weight:900;line-height:1.3;margin-bottom:12px;
}
.qa-block h2::before{
  content:"";display:inline-block;
  width:4px;height:20px;border-radius:2px;
  background:var(--lime);
  margin-right:12px;vertical-align:-2px;
}
.qa-intro{font-size:16px;color:var(--ink-70);max-width:720px}

/* ---------- 对照卡 ---------- */
.compare-card{
  margin-top:24px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  background:var(--paper);
}
.compare-row{display:grid;grid-template-columns:28% 1fr}
.compare-row + .compare-row{border-top:1px solid var(--line)}
.compare-key{
  padding:18px 20px;
  background:var(--paper-2);
  border-right:1px solid var(--line);
  font-size:15px;font-weight:700;line-height:1.6;
  display:flex;align-items:center;gap:8px;
}
.compare-key .flag{
  width:6px;height:6px;border-radius:50%;
  background:var(--lime);flex:0 0 auto;
}
.compare-key.flag-warn .flag{background:var(--ember)}
.compare-val{
  padding:18px 20px;
  font-size:15px;line-height:1.85;color:var(--ink-70);
}
.compare-val strong{color:var(--ink);font-weight:700}

.qa-figure{
  margin-top:24px;
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--paper-2);
}
.qa-figure img{width:100%;aspect-ratio:16/8;object-fit:cover;transition:transform .4s var(--ease)}
.qa-figure:hover img{transform:scale(1.04)}
.qa-figure figcaption{
  padding:12px 18px;font-size:13px;color:var(--ink-70);
  border-top:1px solid var(--line);
}

/* ---------- FAQ ---------- */
.faq-section{padding:8px 0 96px}
.faq-list{border-top:1px solid var(--line);margin-top:32px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:flex-start;gap:16px;
  padding:22px 0;text-align:left;
  font-size:18px;font-weight:700;line-height:1.55;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--pine)}
.faq-num{
  font-family:var(--font-num);font-size:14px;font-weight:700;
  color:var(--ink-70);padding-top:4px;flex:0 0 auto;
}
.faq-text{flex:1;min-width:0}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 auto;margin-top:6px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink);border-radius:2px;
  transition:transform .2s var(--ease),background .2s var(--ease);
}
.faq-icon::before{top:9px;left:0;width:20px;height:2px}
.faq-icon::after{left:9px;top:0;width:2px;height:20px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg)}
.faq-item.is-open .faq-icon::before{background:var(--ember)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .28s var(--ease);
}
.faq-a p{
  padding:0 40px 24px 40px;
  font-size:15px;line-height:1.85;color:var(--ink-70);
}

/* ---------- 相关阅读 ---------- */
.related-section{padding:0 0 96px}
.related-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;margin-top:32px;
}
.rel-card{
  display:flex;flex-direction:column;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:var(--paper);
  overflow:hidden;
  transition:border-color .32s var(--ease),transform .32s var(--ease),box-shadow .32s var(--ease);
}
.rel-card:hover{
  border-color:var(--line-strong);
  transform:translateY(-4px);
  box-shadow:var(--shadow-1);
}
.rel-media{overflow:hidden;aspect-ratio:16/10;background:var(--paper-2)}
.rel-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.rel-card:hover .rel-media img{transform:scale(1.04)}
.rel-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-tag{
  align-self:flex-start;
  padding:4px 10px;border-radius:var(--r-pill);
  background:var(--lime);color:var(--ink);
  font-size:12px;font-weight:700;letter-spacing:.04em;
}
.rel-body h3{font-size:18px;font-weight:700;line-height:1.5}
.rel-body p{font-size:14px;line-height:1.8;color:var(--ink-70);flex:1}
.rel-more{font-size:14px}

/* ---------- 收口 CTA ---------- */
.closing{
  background:var(--paper-2);
  padding:80px 0;
  border-top:1px solid var(--line);
}
.closing-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
}
.closing h2{
  font-family:var(--font-display);
  font-size:clamp(24px,2.6vw,34px);
  font-weight:700;line-height:1.3;letter-spacing:.01em;
}
.closing p{font-size:15px;color:var(--ink-70);margin-top:10px}
.closing-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--pine);color:var(--paper);padding:72px 0 28px}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.site-footer .brand-mark{background:var(--lime);color:var(--pine)}
.footer-brand .brand-name{font-size:16px;font-weight:900;letter-spacing:.02em}
.footer-about{font-size:14px;line-height:1.85;color:rgba(244,241,234,.74);max-width:280px}
.footer-title{
  font-size:12px;letter-spacing:.08em;
  color:rgba(244,241,234,.58);
  margin-bottom:16px;font-weight:700;
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(244,241,234,.86);transition:color .2s var(--ease)}
.footer-links a:hover{color:var(--lime)}
.footer-info p{font-size:14px;line-height:1.9;color:rgba(244,241,234,.74)}
.footer-info strong{color:var(--paper);font-weight:700}
.footer-bottom{
  margin-top:56px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.16);
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;
  font-size:12px;letter-spacing:.04em;color:rgba(244,241,234,.6);
}
.footer-bottom .domain{font-family:var(--font-num);letter-spacing:.08em}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .52s var(--ease),transform .52s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 22px}
  .qa-layout{grid-template-columns:250px minmax(0,1fr);gap:36px}
  .nav-links{gap:20px}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{order:2;aspect-ratio:16/10}
  .page-hero{padding:120px 0 48px}
  .section{padding:72px 0}
  .qa-layout{grid-template-columns:1fr;gap:28px}
  .anchor-nav{position:static;display:flex;flex-wrap:wrap;gap:8px;padding:16px}
  .anchor-title{width:100%;margin-bottom:4px}
  .anchor-link{margin-top:0}
  .anchor-cta{margin-top:0;width:100%}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .page-hero h1{font-size:32px}
  .hero-lede{font-size:16px}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
  .hero-facts{gap:18px 0}
  .fact{padding:0 16px}
  .fact-num{font-size:24px}
  .compare-row{grid-template-columns:1fr}
  .compare-key{border-right:0;border-bottom:1px solid var(--line);padding:14px 18px}
  .compare-val{padding:14px 18px}
  .faq-q{font-size:16px;gap:12px}
  .faq-a p{padding:0 0 22px 0}
  .related-grid{grid-template-columns:1fr}
  .closing{padding:60px 0}
  .closing-actions{width:100%}
  .closing-actions .btn{width:100%}
  .site-footer{padding:56px 0 24px}
}
@media (max-width:519px){
  .container{padding:0 16px}
  .site-header{padding:0 16px;top:12px}
  .nav-shell{padding:0 8px 0 14px}
  .brand{font-size:14px}
  .page-hero{padding:108px 0 40px}
  .page-hero h1{font-size:30px}
  .section,.faq-section,.qa-section,.related-section{padding-top:56px;padding-bottom:56px}
  .section{padding:56px 0}
  .faq-section{padding:56px 0}
  .qa-section{padding:0 0 56px}
  .related-section{padding:0 0 56px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .qa-block{padding-bottom:48px;margin-bottom:48px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    transition-duration:.01ms !important;
    animation-duration:.01ms !important;
  }
  .reveal{opacity:1;transform:none}
  .rel-card:hover{transform:none}
  .hero-media:hover img,.qa-figure:hover img,.rel-card:hover .rel-media img{transform:none}
}