/* roulang page: index */
:root{
  --ink-900:#0E2C26;
  --ink-700:#17453C;
  --ink-500:#2E6B5C;
  --clay-500:#D2603A;
  --paper:#FFFFFF;
  --mist:#F6F3ED;
  --mist-2:#EAF1EE;
  --line:#E4E0D8;
  --text:#141A18;
  --text-2:#5B6663;
  --radius-btn:12px;
  --radius-card:18px;
  --shadow-sm:0 1px 2px rgba(14,44,38,.06);
  --shadow-lg:0 20px 44px -22px rgba(14,44,38,.28);
  --font-serif:'Noto Serif SC','Songti SC','STSong',serif;
  --font-sans:'PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,-apple-system,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--mist);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  font-feature-settings:"tnum";
  -webkit-font-smoothing:antialiased;
}
@media (min-width:1024px){body{font-size:17px}}
@media (max-width:1023px){body{padding-bottom:72px}}

img{max-width:100%;height:auto;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{margin:0;font-family:var(--font-serif);font-weight:700;line-height:1.2;letter-spacing:-.02em;color:var(--ink-900)}
@media (max-width:1023px){h1,h2,h3,h4{letter-spacing:-.01em}}
p{margin:0}
em{font-style:normal}
.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}

a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--ink-500);
  outline-offset:2px;
}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(246,243,237,.94);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-stuck{
  background:var(--paper);
  border-bottom-color:var(--line);
  box-shadow:0 1px 0 rgba(14,44,38,.03);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:64px;
  transition:height .3s ease;
}
@media (min-width:1024px){.header-inner{height:76px}}
.site-header.is-stuck .header-inner{height:64px}

.brand{display:flex;flex-direction:column;line-height:1.1;flex:0 0 auto}
.brand-mark{
  font-family:var(--font-serif);
  font-weight:700;
  font-size:17px;
  color:var(--ink-700);
  letter-spacing:-.01em;
}
@media (min-width:1024px){.brand-mark{font-size:19px}}
.brand-sub{font-size:11px;color:var(--text-2);letter-spacing:.14em;margin-top:3px}

.main-nav{display:none}
@media (min-width:1024px){
  .main-nav{display:flex;align-items:center;gap:2px;flex:1 1 auto;justify-content:center}
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  font-size:15px;
  color:var(--text-2);
  transition:color .25s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:'';
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  background:var(--ink-700);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .3s cubic-bezier(.22,.61,.36,1);
}
.nav-link:hover{color:var(--ink-700)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink-700);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}

.header-cta{display:none}
@media (min-width:1024px){.header-cta{display:inline-flex}}

.icon-btn{
  width:40px;height:40px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  border-radius:12px;
  background:var(--paper);
  color:var(--ink-700);
  transition:border-color .25s ease,background .25s ease;
}
.icon-btn:hover{border-color:var(--ink-500);background:var(--mist-2)}
@media (min-width:1024px){.icon-btn{display:none}}

.mobile-panel{
  position:absolute;
  top:100%;left:0;right:0;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  padding:10px 20px 22px;
  display:none;
}
.mobile-panel.is-open{display:block}
.mobile-panel a{
  display:block;
  padding:12px 4px;
  font-size:16px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.mobile-panel a:last-child{border-bottom:0}
.mobile-panel a.is-active{color:var(--ink-700);font-weight:600}

/* ---------- buttons ---------- */
.btn{
  position:relative;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  isolation:isolate;
  overflow:hidden;
  transition:color .25s ease,border-color .25s ease,background .25s ease,transform .25s ease,box-shadow .25s ease;
}
.btn-lg{height:48px;padding:0 26px;font-size:16px}
.btn::before{
  content:'';
  position:absolute;
  inset:0;
  z-index:-1;
  transform:translateX(-101%);
  transition:transform .35s cubic-bezier(.22,.61,.36,1);
}
.btn:hover::before{transform:translateX(0)}
.btn-primary{background:var(--ink-700);color:#fff}
.btn-primary::before{background:var(--ink-900)}
.btn-primary:hover{box-shadow:var(--shadow-lg)}
.btn-ghost{background:transparent;color:var(--ink-700);border:1px solid var(--ink-700)}
.btn-ghost::before{background:var(--mist-2)}
.btn-light{background:#fff;color:var(--ink-900)}
.btn-light::before{background:var(--mist-2)}

.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--ink-700);
  font-weight:600;
  font-size:15px;
  background-image:linear-gradient(var(--ink-700),var(--ink-700));
  background-repeat:no-repeat;
  background-size:0% 1px;
  background-position:0 100%;
  padding-bottom:2px;
  transition:background-size .3s ease,color .25s ease;
}
.text-link:hover{background-size:100% 1px;color:var(--ink-500)}

/* ---------- sections ---------- */
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:96px 0}}
.section--paper{background:var(--paper)}
.section--mist{background:var(--mist)}
.section--mist2{background:var(--mist-2)}

.sec-head{max-width:44rem;margin-bottom:36px}
@media (min-width:1024px){.sec-head{margin-bottom:52px}}
.sec-eyebrow{
  display:inline-flex;
  align-items:center;
  font-size:13px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--ink-500);
  margin-bottom:14px;
}
.sec-eyebrow i{display:inline-block;width:28px;height:2px;background:var(--ink-700);margin-right:10px}
.sec-head h2{font-size:clamp(1.5rem,2.6vw,2.25rem)}
.sec-desc{margin-top:16px;color:var(--text-2);font-size:1.0625rem;line-height:1.85}

/* ---------- hero ---------- */
.hero{
  background:linear-gradient(180deg,#FFFFFF 0%,var(--mist) 100%);
  padding:48px 0 56px;
  position:relative;
  overflow:hidden;
}
@media (min-width:1024px){.hero{padding:88px 0 96px}}
.hero-grid{display:grid;gap:40px}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:5fr 7fr;gap:56px;align-items:center}
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  font-size:13px;
  font-weight:600;
  letter-spacing:.12em;
  color:var(--ink-500);
  background:var(--mist-2);
  border-radius:999px;
  padding:6px 16px;
}
.hero h1{
  margin-top:20px;
  font-size:clamp(2rem,4.6vw,3.5rem);
  line-height:1.18;
}
.hero-lead{
  margin-top:22px;
  font-size:1.125rem;
  color:var(--text-2);
  max-width:34rem;
  line-height:1.85;
}
.hero-cta{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px}
@media (max-width:519px){.hero-cta .btn{width:100%}}

.trust-bar{
  margin-top:40px;
  display:grid;
  gap:20px;
  grid-template-columns:repeat(3,minmax(0,1fr));
  border-top:1px solid var(--line);
  padding-top:26px;
}
@media (max-width:519px){
  .trust-bar{grid-template-columns:1fr;gap:14px}
}
.trust-num{
  display:block;
  font-family:var(--font-serif);
  font-size:1.75rem;
  font-weight:700;
  color:var(--ink-700);
  line-height:1.1;
}
.trust-txt{display:block;margin-top:6px;font-size:.875rem;color:var(--text-2);line-height:1.6}

.hero-media{position:relative}
.hero-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:14px;
  border:1px solid var(--mist-2);
}
.hero-media::after{
  content:'';
  position:absolute;
  right:-10px;bottom:-10px;
  width:96px;height:2px;
  background:var(--ink-700);
  opacity:.55;
}

/* ---------- value strip ---------- */
.value-strip{
  background:var(--mist-2);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:28px 0;
}
.value-grid{display:grid;gap:22px}
@media (min-width:768px){.value-grid{grid-template-columns:repeat(3,1fr);gap:32px}}
.value-item{display:flex;gap:14px;align-items:flex-start}
.value-icon{
  flex:0 0 auto;
  width:42px;height:42px;
  border-radius:12px;
  background:var(--paper);
  color:var(--ink-700);
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);
}
.value-item h3{font-size:1.0625rem;font-family:var(--font-sans);font-weight:600;color:var(--ink-900)}
.value-item p{margin-top:4px;font-size:.9375rem;color:var(--text-2);line-height:1.7}

/* ---------- feature group ---------- */
.func-layout{display:grid;gap:36px}
@media (min-width:1024px){
  .func-layout{grid-template-columns:4fr 8fr;gap:56px;align-items:start}
}
.func-aside{position:static}
@media (min-width:1024px){
  .func-aside{position:sticky;top:104px}
}
.func-aside h2{font-size:clamp(1.5rem,2.6vw,2.25rem)}
.func-aside p{margin-top:16px;color:var(--text-2)}
.func-aside .text-link{margin-top:22px}

.func-grid{display:grid;gap:20px}
@media (min-width:768px){.func-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}}
.func-card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:12px;
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
@media (min-width:1024px){.func-card{padding:28px}}
.func-card:hover{transform:translateY(-2px);border-color:var(--ink-500);box-shadow:var(--shadow-lg)}
@media (min-width:768px){
  .func-card:nth-child(even){margin-top:28px}
}
.func-icon{
  width:44px;height:44px;
  border-radius:12px;
  background:var(--mist-2);
  color:var(--ink-700);
  display:inline-flex;align-items:center;justify-content:center;
}
.func-card h3{font-size:1.125rem}
.func-card p{font-size:.9375rem;color:var(--text-2);line-height:1.8}
.func-card--dark{background:var(--ink-700);border-color:transparent}
.func-card--dark h3{color:#fff}
.func-card--dark p{color:rgba(255,255,255,.76)}
.func-card--dark .func-icon{background:rgba(255,255,255,.12);color:#fff}
.func-card--dark .text-link{color:#fff;background-image:linear-gradient(#fff,#fff)}
.func-card--dark .text-link:hover{color:rgba(255,255,255,.8)}
.func-card--dark:hover{border-color:var(--ink-900)}

/* ---------- scenes ---------- */
.scene-tabs{
  display:flex;
  gap:10px;
  overflow-x:auto;
  padding-bottom:6px;
  margin-bottom:32px;
  scrollbar-width:none;
}
.scene-tabs::-webkit-scrollbar{display:none}
.scene-tab{
  flex:0 0 auto;
  height:42px;
  padding:0 20px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--paper);
  color:var(--text-2);
  font-size:15px;
  transition:all .25s ease;
}
.scene-tab:hover{border-color:var(--ink-500);color:var(--ink-700)}
.scene-tab.is-active{background:var(--ink-700);border-color:var(--ink-700);color:#fff;font-weight:600}

.scene-panel{display:none}
.scene-panel.is-active{display:block}
.scene-inner{display:grid;gap:32px}
@media (min-width:1024px){
  .scene-inner{grid-template-columns:6fr 6fr;gap:52px;align-items:center}
}
.scene-inner img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:14px;
  border:1px solid var(--line);
}

.step-list{display:grid;gap:22px}
.step-list li{display:flex;gap:16px;align-items:flex-start}
.step-num{
  flex:0 0 auto;
  width:36px;height:36px;
  border-radius:999px;
  background:var(--mist-2);
  color:var(--ink-700);
  font-family:var(--font-serif);
  font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;
}
.step-list h3{font-size:1.0625rem;font-family:var(--font-sans);font-weight:600}
.step-list p{margin-top:6px;font-size:.9375rem;color:var(--text-2);line-height:1.8}

/* ---------- cases ---------- */
.case-list{display:grid;gap:44px}
.case-item{display:grid;gap:24px}
@media (min-width:1024px){
  .case-item{grid-template-columns:1fr 1fr;gap:48px;align-items:center}
  .case-item--flip .case-media{order:2}
}
.case-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:14px;
  border:1px solid var(--line);
}
.case-body h3{font-size:1.375rem}
.case-body p{margin-top:14px;color:var(--text-2);font-size:1rem;line-height:1.85}
.case-stat{
  margin-top:22px;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:16px 22px;
  display:flex;
  align-items:baseline;
  gap:12px;
}
.case-stat strong{
  font-family:var(--font-serif);
  font-size:1.625rem;
  color:var(--ink-700);
  line-height:1;
}
.case-stat span{font-size:.875rem;color:var(--text-2)}
.case-body .text-link{margin-top:20px}

/* ---------- pricing ---------- */
.price-grid{display:grid;gap:22px}
@media (min-width:1024px){.price-grid{grid-template-columns:repeat(3,1fr);gap:26px;align-items:start}}
.price-card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px 24px;
  display:flex;
  flex-direction:column;
  gap:20px;
  box-shadow:var(--shadow-sm);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.price-card:hover{transform:translateY(-2px);border-color:var(--ink-500);box-shadow:var(--shadow-lg)}
.price-card--featured{
  background:var(--mist-2);
  border:2px solid var(--ink-700);
}
@media (min-width:1024px){
  .price-card--featured{transform:translateY(-8px)}
  .price-card--featured:hover{transform:translateY(-10px)}
}
.price-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.price-name{font-size:1.1875rem;font-family:var(--font-serif);font-weight:700;color:var(--ink-900)}
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border-radius:999px;
  font-size:.75rem;
  letter-spacing:.04em;
  background:var(--mist-2);
  color:var(--ink-700);
  font-weight:600;
}
.badge--clay{background:var(--clay-500);color:#fff}
.price-figure{
  font-family:var(--font-serif);
  font-size:1.5rem;
  color:var(--ink-700);
  padding-bottom:18px;
  border-bottom:1px solid var(--line);
}
.price-figure small{display:block;font-family:var(--font-sans);font-size:.875rem;color:var(--text-2);margin-top:6px;font-weight:400}
.price-feats{display:grid;gap:12px;flex:1 1 auto}
.price-feats li{display:flex;gap:10px;align-items:flex-start;font-size:.9375rem;color:var(--text-2);line-height:1.7}
.price-feats svg{flex:0 0 auto;margin-top:5px;color:var(--ink-500)}
.price-card .btn{width:100%}

/* ---------- news / cms ---------- */
.news-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  margin-bottom:36px;
}
.news-grid{display:grid;gap:22px}
@media (min-width:768px){.news-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.news-card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  display:flex;
  flex-direction:column;
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.news-card:hover{transform:translateY(-2px);border-color:var(--ink-500);box-shadow:var(--shadow-lg)}
.news-thumb{display:block;overflow:hidden}
.news-thumb img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .45s cubic-bezier(.22,.61,.36,1);
}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto}
.news-title{font-size:1.0625rem;line-height:1.5}
.news-title a{color:var(--ink-900);transition:color .25s ease}
.news-title a:hover{color:var(--ink-500)}
.news-summary{font-size:.9375rem;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:.8125rem;
  color:var(--text-2);
}
.news-date{display:inline-flex;align-items:center;gap:8px}
.news-date::before{content:'';width:4px;height:4px;background:var(--ink-700);border-radius:1px}
.news-more{color:var(--ink-700);font-weight:600;font-size:.8125rem}
.news-more:hover{color:var(--ink-500)}

.empty-state{
  background:var(--paper);
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  padding:56px 24px;
  text-align:center;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:16px;
}
.empty-state svg{color:var(--ink-500)}
.empty-state p{color:var(--text-2);font-size:1rem}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:16px}
.faq-item{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:border-color .3s ease;
}
.faq-item[open]{border-left:3px solid var(--ink-700)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 24px;
  font-size:1.0625rem;
  font-weight:600;
  color:var(--ink-900);
  font-family:var(--font-sans);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{
  flex:0 0 auto;
  position:relative;
  width:20px;height:20px;
  color:var(--ink-700);
}
.faq-icon::before,.faq-icon::after{
  content:'';
  position:absolute;
  background:currentColor;
  border-radius:2px;
  transition:transform .28s ease;
}
.faq-icon::before{left:0;right:0;top:9px;height:2px}
.faq-icon::after{top:0;bottom:0;left:9px;width:2px}
.faq-item[open] .faq-icon::after{transform:scaleY(0)}
.faq-body{padding:0 24px 22px;color:var(--text-2);font-size:1rem;line-height:1.85}

/* ---------- cta ---------- */
.cta-band{background:var(--ink-900);color:rgba(255,255,255,.78);padding:56px 0}
@media (min-width:1024px){.cta-band{padding:72px 0}}
.cta-inner{display:grid;gap:28px}
@media (min-width:1024px){
  .cta-inner{grid-template-columns:8fr 4fr;align-items:center;gap:48px}
}
.cta-inner h2{color:#fff;font-size:clamp(1.5rem,2.6vw,2.25rem)}
.cta-inner p{margin-top:14px;font-size:1rem;max-width:38rem}
.cta-actions{display:flex;justify-content:flex-start}
@media (min-width:1024px){.cta-actions{justify-content:flex-end}}
.cta-meta{
  margin-top:36px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.14);
  display:grid;
  gap:14px;
  font-size:.875rem;
}
@media (min-width:768px){.cta-meta{grid-template-columns:repeat(3,1fr)}}
.cta-meta strong{display:block;color:#fff;font-size:.9375rem;font-weight:600;margin-bottom:2px}
.cta-meta a{text-decoration:underline;text-underline-offset:3px}
.cta-meta a:hover{color:#fff}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.7);padding:56px 0 0}
@media (min-width:1024px){.site-footer{padding:72px 0 0}}
.footer-grid{display:grid;gap:36px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.3fr}}
.footer-brand .brand-mark{color:#fff}
.footer-brand .brand-sub{color:rgba(255,255,255,.5)}
.footer-desc{margin-top:16px;font-size:.9375rem;line-height:1.8;max-width:22rem}
.footer-title{font-family:var(--font-sans);font-size:.9375rem;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-link{
  display:block;
  padding:5px 0;
  font-size:.9375rem;
  color:rgba(255,255,255,.68);
  transition:color .2s ease,transform .2s ease;
}
.footer-link:hover{color:#fff;transform:translateX(2px)}

.subscribe{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}
.subscribe input{
  flex:1 1 150px;
  height:44px;
  padding:0 14px;
  border-radius:var(--radius-btn);
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);
  color:#fff;
  font-size:.9375rem;
  min-width:0;
}
.subscribe input::placeholder{color:rgba(255,255,255,.45)}
.subscribe input:focus{
  outline:none;
  border-color:var(--ink-500);
  box-shadow:0 0 0 2px rgba(46,107,92,.55);
}
.subscribe button{
  height:44px;
  padding:0 20px;
  border-radius:var(--radius-btn);
  background:#fff;
  color:var(--ink-900);
  font-weight:600;
  font-size:.9375rem;
  transition:background .25s ease,color .25s ease;
}
.subscribe button:hover{background:var(--mist-2)}
.footer-note{margin-top:14px;font-size:.8125rem;color:rgba(255,255,255,.5);line-height:1.7}

.footer-bottom{
  margin-top:44px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0;
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:.8125rem;
  color:rgba(255,255,255,.55);
}

/* ---------- mobile tabbar ---------- */
.tabbar{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:60;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  background:var(--paper);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
@media (min-width:1024px){.tabbar{display:none}}
.tab-item{
  position:relative;
  height:58px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:2px;
  font-size:10px;
  color:var(--text-2);
  transition:color .25s ease;
}
.tab-item svg{width:22px;height:22px}
.tab-item::before{
  content:'';
  position:absolute;
  top:6px;
  width:14px;height:3px;
  border-radius:999px;
  background:transparent;
  transition:background .25s ease;
}
.tab-item.is-active{color:var(--ink-700);font-weight:600}
.tab-item.is-active::before{background:var(--ink-700)}

/* ---------- reveal ---------- */
.js .reveal{opacity:0;transform:translateY(16px)}
.js .reveal.is-visible{
  opacity:1;
  transform:none;
  transition:opacity .5s cubic-bezier(.22,.61,.36,1),transform .5s cubic-bezier(.22,.61,.36,1);
}
@media (prefers-reduced-motion:reduce){
  .js .reveal{opacity:1;transform:none}
  *,*::before,*::after{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --ink-900:#0E2C26;
  --ink-700:#17453C;
  --ink-500:#2E6B5C;
  --clay-500:#D2603A;
  --paper:#FFFFFF;
  --mist:#F6F3ED;
  --mist-2:#EAF1EE;
  --line:#E4E0D8;
  --text:#141A18;
  --text-2:#5B6663;
  --radius-btn:12px;
  --radius-card:18px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(14,44,38,.06);
  --shadow-2:0 20px 44px -22px rgba(14,44,38,.28);
  --font-serif:'Noto Serif SC','Songti SC','STSong',serif;
  --font-sans:'PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
  --container:1200px;
}

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

html{-webkit-text-size-adjust:100%;}

body{
  margin:0;
  padding:0;
  background:var(--mist);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}

img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:600;letter-spacing:-0.02em;line-height:1.25;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;}
:focus-visible{outline:2px solid var(--ink-500);outline-offset:2px;border-radius:6px;}
.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;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(246,243,237,.94);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:var(--paper);
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-1);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:76px;
  transition:height .3s ease;
}
.site-header.is-scrolled .header-inner{height:64px;}

.brand{display:flex;flex-direction:column;gap:2px;min-width:0;}
.brand-mark{
  font-family:var(--font-serif);
  font-size:20px;
  font-weight:700;
  color:var(--ink-700);
  letter-spacing:-0.01em;
  white-space:nowrap;
}
.brand-sub{
  font-size:11px;
  letter-spacing:.14em;
  color:var(--text-2);
  white-space:nowrap;
}

.main-nav{display:flex;align-items:center;gap:30px;}
.nav-link{
  position:relative;
  padding:6px 0;
  font-size:15px;
  color:var(--text-2);
  transition:color .25s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  background:var(--ink-700);
  transition:width .3s cubic-bezier(.22,.61,.36,1);
}
.nav-link:hover{color:var(--ink-700);}
.nav-link:hover::after,
.nav-link.is-active::after{width:100%;}
.nav-link.is-active{color:var(--ink-700);font-weight:600;}

.header-actions{display:flex;align-items:center;gap:12px;}

.menu-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:var(--paper);
  color:var(--ink-700);
  transition:border-color .25s ease,background .25s ease;
}
.menu-toggle:hover{border-color:var(--ink-500);background:var(--mist-2);}

.mobile-menu{
  display:none;
  border-top:1px solid var(--line);
  background:var(--paper);
  padding:12px 20px 20px;
}
.mobile-menu.is-open{display:block;}
.mobile-menu .nav-link{
  display:block;
  padding:12px 0;
  border-bottom:1px solid var(--line);
  font-size:16px;
}
.mobile-menu .nav-link:last-child{border-bottom:none;}

/* ---------- 按钮 ---------- */
.btn{
  position:relative;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  overflow:hidden;
  transition:color .3s ease,border-color .3s ease,transform .2s ease;
  border:1px solid transparent;
}
.btn span{position:relative;z-index:1;}
.btn-primary{background:var(--ink-700);color:#fff;}
.btn-primary::before{
  content:"";
  position:absolute;
  inset:0;
  background:var(--ink-500);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .35s cubic-bezier(.22,.61,.36,1);
}
.btn-primary:hover::before{transform:scaleX(1);}
.btn-ghost{
  background:transparent;
  color:var(--ink-700);
  border-color:var(--ink-700);
}
.btn-ghost::before{
  content:"";
  position:absolute;
  inset:0;
  background:var(--mist-2);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .35s cubic-bezier(.22,.61,.36,1);
}
.btn-ghost:hover::before{transform:scaleX(1);}
.btn-light{background:#fff;color:var(--ink-700);}
.btn-light:hover{background:var(--mist-2);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}

.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--ink-700);
  font-weight:600;
  font-size:15px;
  border-bottom:1px solid rgba(23,69,60,.35);
  transition:color .25s ease,border-color .25s ease;
}
.text-link:hover{color:var(--ink-500);border-color:var(--ink-500);}
.text-link svg{transition:transform .25s ease;}
.text-link:hover svg{transform:translateX(3px);}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-sm{padding:64px 0;}
.section-alt{background:var(--mist-2);}

.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--ink-500);
  border:1px solid rgba(46,107,92,.3);
  border-radius:var(--radius-pill);
  padding:4px 14px;
  margin-bottom:18px;
  background:rgba(255,255,255,.6);
}

.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{
  font-size:clamp(1.5rem,2.6vw,2.25rem);
  color:var(--ink-900);
  margin-bottom:14px;
}
.section-head p{color:var(--text-2);font-size:17px;}

.h2-rule{
  display:block;
  width:28px;
  height:2px;
  background:var(--ink-700);
  margin-bottom:16px;
}

/* ---------- 分类页 Hero ---------- */
.cat-hero{
  background:var(--mist-2);
  border-bottom:1px solid var(--line);
  padding:72px 0 68px;
}
.cat-hero-grid{
  display:grid;
  grid-template-columns:1.05fr 0.95fr;
  gap:56px;
  align-items:center;
}
.cat-hero h1{
  font-size:clamp(1.85rem,3.8vw,2.9rem);
  color:var(--ink-900);
  margin-bottom:18px;
}
.cat-hero .lead{
  font-size:18px;
  color:var(--text-2);
  max-width:34em;
  margin-bottom:26px;
}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;}
.hero-figure{
  margin:0;
  border-radius:14px;
  overflow:hidden;
  border:1px solid rgba(46,107,92,.16);
  box-shadow:var(--shadow-2);
}
.hero-figure img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;}

/* ---------- 要点带 ---------- */
.point-strip{
  background:var(--paper);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.point-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
}
.point-item{
  padding:32px 28px;
  display:flex;
  gap:16px;
  align-items:flex-start;
  border-right:1px solid var(--line);
}
.point-item:last-child{border-right:none;}
.point-icon{
  flex:0 0 40px;
  width:40px;
  height:40px;
  border-radius:12px;
  background:var(--mist-2);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--ink-700);
}
.point-item h3{
  font-size:16px;
  color:var(--ink-900);
  margin-bottom:4px;
  font-family:var(--font-sans);
  font-weight:600;
  letter-spacing:0;
}
.point-item p{font-size:14px;color:var(--text-2);margin:0;line-height:1.7;}

/* ---------- 图文交替 ---------- */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:center;
}
.split-reverse .split-text{order:2;}
.split-reverse .split-media{order:1;}
.split-text h2{
  font-size:clamp(1.4rem,2.2vw,1.9rem);
  color:var(--ink-900);
  margin-bottom:18px;
}
.split-text p{color:var(--text-2);}
.check-list{list-style:none;margin-top:22px;}
.check-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:12px 0;
  border-bottom:1px solid var(--line);
  font-size:15.5px;
  color:var(--text);
}
.check-list li:last-child{border-bottom:none;}
.check-list .dot{
  flex:0 0 8px;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--ink-700);
  margin-top:12px;
}
.split-media{
  margin:0;
  border-radius:14px;
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--paper);
  box-shadow:var(--shadow-1);
  transition:transform .3s ease,box-shadow .3s ease;
}
.split-media:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.split-media img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;}

/* ---------- 编号清单 ---------- */
.step-list{list-style:none;counter-reset:step;margin-top:8px;}
.step-item{
  display:grid;
  grid-template-columns:104px 1fr;
  gap:28px;
  padding:34px 0;
  border-bottom:1px solid var(--line);
  align-items:flex-start;
}
.step-item:last-child{border-bottom:none;}
.step-num{
  font-family:var(--font-serif);
  font-size:62px;
  line-height:1;
  font-weight:700;
  color:rgba(23,69,60,.2);
}
.step-item h3{
  font-size:20px;
  color:var(--ink-900);
  margin-bottom:8px;
}
.step-item p{color:var(--text-2);font-size:15.5px;margin:0;}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.badge{
  display:inline-block;
  font-size:12px;
  letter-spacing:.04em;
  padding:3px 12px;
  border-radius:var(--radius-pill);
  background:var(--mist-2);
  color:var(--ink-700);
}
.badge-clay{background:rgba(210,96,58,.12);color:var(--clay-500);}

/* ---------- FAQ ---------- */
.faq-item{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  margin-bottom:14px;
  overflow:hidden;
  transition:box-shadow .3s ease,border-color .3s ease;
}
.faq-item:hover{border-color:var(--ink-500);box-shadow:var(--shadow-1);}
.faq-item[open]{border-left:3px solid var(--ink-700);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 26px;
  font-size:17px;
  font-weight:600;
  color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{
  flex:0 0 26px;
  width:26px;
  height:26px;
  border-radius:50%;
  background:var(--mist-2);
  color:var(--ink-700);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
  line-height:1;
  transition:transform .28s cubic-bezier(.22,.61,.36,1);
}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-body{
  padding:0 26px 24px;
  color:var(--text-2);
  font-size:16px;
  line-height:1.85;
}

/* ---------- 相关分类 ---------- */
.rel-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
}
.rel-card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px;
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.rel-card:hover{transform:translateY(-2px);border-color:var(--ink-500);box-shadow:var(--shadow-2);}
.rel-card h3{font-size:18px;color:var(--ink-900);margin-bottom:8px;}
.rel-card p{font-size:14.5px;color:var(--text-2);margin-bottom:14px;}

/* ---------- 底部 CTA ---------- */
.cta-band{
  background:var(--ink-900);
  color:#E7EFEC;
  padding:72px 0;
}
.cta-inner{
  display:grid;
  grid-template-columns:1.4fr auto;
  gap:40px;
  align-items:center;
}
.cta-inner h2{
  font-size:clamp(1.4rem,2.3vw,2rem);
  color:#fff;
  margin-bottom:12px;
}
.cta-inner p{color:rgba(231,239,236,.78);font-size:16px;margin:0;}
.cta-meta{
  margin-top:22px;
  padding-top:20px;
  border-top:1px solid rgba(231,239,236,.16);
  display:flex;
  flex-wrap:wrap;
  gap:28px;
  font-size:14px;
  color:rgba(231,239,236,.7);
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);
  color:rgba(231,239,236,.8);
  padding:72px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 0.8fr 1fr 1.3fr;
  gap:40px;
}
.footer-brand{display:flex;flex-direction:column;gap:4px;margin-bottom:16px;}
.site-footer .brand-mark{color:#fff;}
.site-footer .brand-sub{color:rgba(231,239,236,.55);}
.footer-desc{font-size:14.5px;line-height:1.85;color:rgba(231,239,236,.72);max-width:32em;margin:0;}
.footer-title{
  font-family:var(--font-sans);
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
  letter-spacing:0;
}
.footer-link{
  display:block;
  font-size:14.5px;
  color:rgba(231,239,236,.72);
  padding:6px 0;
  transition:color .25s ease,transform .25s ease;
}
.footer-link:hover{color:#fff;transform:translateX(3px);}
.footer-note{font-size:13.5px;color:rgba(231,239,236,.6);margin:0 0 14px;line-height:1.7;}
.subscribe{display:flex;gap:10px;flex-wrap:wrap;}
.subscribe input{
  flex:1 1 160px;
  height:48px;
  padding:0 16px;
  border-radius:var(--radius-btn);
  border:1px solid rgba(231,239,236,.24);
  background:rgba(255,255,255,.06);
  color:#fff;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.subscribe input::placeholder{color:rgba(231,239,236,.45);}
.subscribe input:focus{
  outline:none;
  border-color:var(--ink-500);
  box-shadow:0 0 0 2px rgba(46,107,92,.55);
}
.subscribe button{
  height:48px;
  padding:0 22px;
  border:none;
  border-radius:var(--radius-btn);
  background:#fff;
  color:var(--ink-700);
  font-weight:600;
  transition:background .25s ease,color .25s ease;
}
.subscribe button:hover{background:var(--mist-2);}
.footer-bottom{
  margin-top:52px;
  padding-top:22px;
  border-top:1px solid rgba(231,239,236,.14);
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  font-size:13px;
  color:rgba(231,239,236,.55);
}

/* ---------- 移动端底部 Tab ---------- */
.bottom-tabs{
  display:none;
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:70;
  background:var(--paper);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  height:calc(58px + env(safe-area-inset-bottom));
}
.bottom-tabs a{
  flex:1;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  font-size:10px;
  color:var(--text-2);
  position:relative;
}
.bottom-tabs a svg{width:22px;height:22px;}
.bottom-tabs a.is-active{color:var(--ink-700);font-weight:600;}
.bottom-tabs a.is-active::before{
  content:"";
  position:absolute;
  top:4px;
  width:16px;
  height:3px;
  border-radius:2px;
  background:var(--ink-700);
}

/* ---------- 动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .5s cubic-bezier(.22,.61,.36,1),transform .5s cubic-bezier(.22,.61,.36,1);
}
.reveal.is-visible{opacity:1;transform:none;}

@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1 !important;transform:none !important;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  body{padding-bottom:72px;}
  .main-nav{display:none;}
  .header-actions .btn{display:none;}
  .menu-toggle{display:inline-flex;}
  .bottom-tabs{display:flex;}
  .cat-hero-grid{grid-template-columns:1fr;gap:36px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split-reverse .split-text{order:1;}
  .split-reverse .split-media{order:2;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-inner{grid-template-columns:1fr;gap:28px;}
  .section{padding:64px 0;}
  .section-sm{padding:48px 0;}
}

@media (max-width:767px){
  .point-grid{grid-template-columns:1fr;}
  .point-item{border-right:none;border-bottom:1px solid var(--line);padding:24px 4px;}
  .point-item:last-child{border-bottom:none;}
  .rel-grid{grid-template-columns:1fr;}
  .step-item{grid-template-columns:64px 1fr;gap:18px;padding:26px 0;}
  .step-num{font-size:44px;}
  .faq-item summary{padding:18px 20px;font-size:16px;}
  .faq-body{padding:0 20px 20px;}
  .site-footer{padding:56px 0 24px;}
  .cat-hero{padding:48px 0 52px;}
}

@media (max-width:519px){
  .container{padding-left:18px;padding-right:18px;}
  .footer-grid{grid-template-columns:1fr;}
  .btn{width:100%;}
  .btn-row{flex-direction:column;}
  .btn-row .btn{width:100%;}
  .header-inner{height:64px;gap:12px;}
  .brand-mark{font-size:17px;}
  .brand-sub{font-size:10px;}
  .subscribe{flex-direction:column;}
  .subscribe input,.subscribe button{width:100%;}
}

/* roulang page: article */
:root{
  --ink-900:#0E2C26;
  --ink-700:#17453C;
  --ink-500:#2E6B5C;
  --clay-500:#D2603A;
  --paper:#FFFFFF;
  --mist:#F6F3ED;
  --mist-2:#EAF1EE;
  --line:#E4E0D8;
  --text:#141A18;
  --text-2:#5B6663;
  --radius-btn:12px;
  --radius-card:18px;
  --shadow-1:0 1px 2px rgba(14,44,38,.06);
  --shadow-2:0 20px 44px -22px rgba(14,44,38,.28);
  --font-serif:'Noto Serif SC','Songti SC','STSong',serif;
  --font-sans:'PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--mist);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  padding-bottom:72px;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:600;letter-spacing:-.02em;line-height:1.25}
p{margin:0}
:focus-visible{outline:2px solid var(--ink-500);outline-offset:2px}
.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}

.container.container{max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.container.container{padding-left:24px;padding-right:24px}}
@media (min-width:1024px){.container.container{padding-left:32px;padding-right:32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,243,237,.94);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{background:var(--paper);border-bottom-color:var(--line);box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;gap:18px;height:76px;transition:height .3s ease}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:flex;flex-direction:column;line-height:1.15;flex-shrink:0}
.brand-mark{font-family:var(--font-serif);font-size:19px;font-weight:700;color:var(--ink-700);letter-spacing:-.02em}
.brand-sub{font-size:11px;color:var(--text-2);letter-spacing:.1em;margin-top:3px}
.main-nav{display:none;margin-left:auto;align-items:center;gap:4px}
@media (min-width:1024px){.main-nav{display:flex}}
.nav-link{
  position:relative;display:inline-block;padding:8px 12px;font-size:15px;color:var(--text-2);
  border-radius:8px;transition:color .25s ease;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;background:var(--ink-700);
  transform:scaleX(0);transform-origin:left;transition:transform .28s cubic-bezier(.22,.61,.36,1);
}
.nav-link:hover{color:var(--ink-700)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink-700);font-weight:600}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
@media (min-width:1024px){.header-actions{margin-left:18px}}
.header-cta{display:none}
@media (min-width:1024px){.header-cta{display:inline-flex}}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;
  background:var(--paper);border:1px solid var(--line);border-radius:12px;cursor:pointer;
  color:var(--ink-700);transition:border-color .25s ease,background .25s ease;
}
.menu-toggle:hover{border-color:var(--ink-500);background:var(--mist-2)}
@media (min-width:1024px){.menu-toggle{display:none}}
.mobile-menu{
  display:none;position:absolute;left:0;right:0;top:100%;background:var(--paper);
  border-bottom:1px solid var(--line);box-shadow:var(--shadow-2);padding:12px 20px 18px;
}
.mobile-menu.is-open{display:block}
.mobile-menu .nav-link{display:block;padding:12px 8px;font-size:15px;border-bottom:1px solid var(--line)}
.mobile-menu .nav-link::after{display:none}
.mobile-menu .nav-link.is-active{color:var(--ink-700);background:var(--mist-2);border-radius:10px}

/* ---------- buttons ---------- */
.btn{
  position:relative;isolation:isolate;overflow:hidden;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:color .3s ease,border-color .3s ease,background .3s ease,transform .25s ease;
}
.btn::before{
  content:"";position:absolute;inset:0;z-index:-1;background:var(--ink-900);
  transform:scaleX(0);transform-origin:left;transition:transform .35s cubic-bezier(.22,.61,.36,1);
}
.btn:hover::before{transform:scaleX(1)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--ink-700);color:#fff}
.btn-primary:hover{color:#fff}
.btn-outline{background:transparent;border-color:var(--ink-700);color:var(--ink-700)}
.btn-outline::before{background:var(--mist-2)}
.btn-outline:hover{color:var(--ink-900);border-color:var(--ink-900)}
.btn-light{background:#fff;color:var(--ink-900)}
.btn-light::before{background:var(--mist-2)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-outline-light::before{background:rgba(255,255,255,.14)}
.text-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--ink-700);font-weight:600;font-size:15px;
  border-bottom:1px solid transparent;transition:color .25s ease,border-color .25s ease;
}
.text-link:hover{color:var(--ink-500);border-bottom-color:var(--ink-500)}

/* ---------- breadcrumb & article head ---------- */
.crumb-bar{background:var(--paper);border-bottom:1px solid var(--line)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:16px 0;font-size:.875rem;color:var(--text-2)}
.breadcrumb a{color:var(--text-2);transition:color .2s ease}
.breadcrumb a:hover{color:var(--ink-700)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--ink-700);font-weight:600;max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.article-head{
  position:relative;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  padding:44px 0 40px;
}
.article-head::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(246,243,237,.95) 0%,rgba(246,243,237,.99) 100%);
}
.article-head-inner{position:relative;z-index:1}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--mist-2);color:var(--ink-700);font-size:.75rem;letter-spacing:.04em;font-weight:600;
}
.tag-clay{background:rgba(210,96,58,.12);color:var(--clay-500)}
.article-title{
  font-size:clamp(1.7rem,3.6vw,2.6rem);
  color:var(--ink-900);
  max-width:26ch;
  letter-spacing:-.02em;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;font-size:.875rem;color:var(--text-2);font-variant-numeric:tabular-nums}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--ink-500);display:inline-block}

/* ---------- layout ---------- */
.page-main{padding:40px 0 72px}
@media (min-width:1024px){.page-main{padding:56px 0 96px}}
.article-layout{display:block}
@media (min-width:1280px){
  .article-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:56px;align-items:start}
}
.article-paper{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:28px 22px;
}
@media (min-width:768px){.article-paper{padding:44px 46px}}
@media (min-width:1280px){.article-paper{padding:52px 60px}}

/* ---------- article body ---------- */
.article-body{font-size:16.5px;line-height:1.9;color:var(--text)}
@media (min-width:1024px){.article-body{font-size:17px}}
.article-body h2{
  font-size:clamp(1.3rem,2.2vw,1.7rem);color:var(--ink-900);
  margin:2.4em 0 .9em;padding-top:.1em;
}
.article-body h2::before{
  content:"";display:block;width:28px;height:2px;background:var(--ink-700);margin-bottom:14px;border-radius:2px;
}
.article-body h3{font-size:1.2rem;color:var(--ink-700);margin:1.9em 0 .6em;font-family:var(--font-serif)}
.article-body h4{font-size:1.05rem;color:var(--ink-700);margin:1.6em 0 .5em;font-family:var(--font-serif)}
.article-body p{margin:0 0 1.2em}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.5em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:.55em;line-height:1.85}
.article-body li::marker{color:var(--ink-500)}
.article-body blockquote{
  margin:1.7em 0;padding:18px 22px;background:var(--mist-2);
  border-left:3px solid var(--ink-700);border-radius:0 12px 12px 0;color:var(--ink-900);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:1.7em auto;width:100%}
.article-body figure{margin:1.7em 0}
.article-body figcaption{font-size:.8125rem;color:var(--text-2);text-align:center;margin-top:10px}
.article-body a{color:var(--ink-700);border-bottom:1px solid rgba(23,69,60,.35);transition:color .2s ease,border-color .2s ease}
.article-body a:hover{color:var(--ink-500);border-bottom-color:var(--ink-500)}
.article-body strong{color:var(--ink-900)}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:1.4em 0}
.article-body th{background:var(--mist-2);text-align:left;color:var(--ink-900)}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px}
@media (max-width:767px){
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}
.article-body code{background:var(--mist-2);border-radius:6px;padding:2px 6px;font-size:.92em}

/* ---------- toc ---------- */
.article-aside{display:none}
@media (min-width:1280px){.article-aside{display:block}}
.toc{
  position:sticky;top:96px;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);padding:20px 22px;
}
.toc-title{font-size:.9375rem;color:var(--ink-900);margin-bottom:12px;letter-spacing:0}
.toc-list{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line);padding-left:0}
.toc-list li{margin:0}
.toc-link{
  display:block;padding:6px 0 6px 14px;margin-left:-1px;font-size:.875rem;color:var(--text-2);
  border-left:2px solid transparent;line-height:1.6;transition:color .2s ease,border-color .2s ease;
}
.toc-link:hover{color:var(--ink-700)}
.toc-link.is-active{color:var(--ink-700);font-weight:600;border-left-color:var(--ink-700)}

/* ---------- article foot ---------- */
.article-foot{margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.foot-label{font-size:.8125rem;color:var(--text-2);letter-spacing:.06em;margin-bottom:12px}
.tag-group{display:flex;flex-wrap:wrap;gap:10px}
.tag-group a{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  background:var(--mist);border:1px solid var(--line);font-size:.8125rem;color:var(--text-2);
  transition:border-color .25s ease,color .25s ease,background .25s ease;
}
.tag-group a:hover{border-color:var(--ink-500);color:var(--ink-700);background:var(--mist-2)}
.notice{
  margin-top:24px;padding:16px 18px;background:var(--mist);border-radius:12px;
  font-size:.8125rem;color:var(--text-2);line-height:1.75;
}
.back-row{margin-top:28px}

/* ---------- empty state ---------- */
.empty-state{text-align:center;padding:52px 20px}
.empty-state h2{font-size:1.5rem;color:var(--ink-900);margin-bottom:12px}
.empty-state p{color:var(--text-2);margin-bottom:24px}

/* ---------- related ---------- */
.section{padding:64px 0}
@media (min-width:1024px){.section{padding:88px 0}}
.section-mist{background:var(--mist-2)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:32px}
.section-head h2{font-size:clamp(1.4rem,2.4vw,2rem);color:var(--ink-900)}
.section-head p{color:var(--text-2);font-size:.9375rem;margin-top:8px;max-width:52ch}
.related-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media (min-width:640px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.related-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.post-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .3s cubic-bezier(.22,.61,.36,1),box-shadow .3s ease,border-color .3s ease;
}
.post-card:hover{transform:translateY(-2px);border-color:var(--ink-500);box-shadow:var(--shadow-2)}
.post-thumb{display:block;overflow:hidden;background:var(--mist-2);aspect-ratio:16/10}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s cubic-bezier(.22,.61,.36,1)}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-title{font-size:1.0625rem;line-height:1.45}
.post-title a{transition:color .2s ease}
.post-title a:hover{color:var(--ink-700)}
.post-desc{font-size:.9375rem;color:var(--text-2);line-height:1.75;flex:1}
.post-foot{display:flex;align-items:center;gap:10px;font-size:.8125rem;color:var(--text-2);font-variant-numeric:tabular-nums}
.post-foot .dot{width:4px;height:4px;border-radius:50%;background:var(--ink-500)}
.post-foot .text-link{margin-left:auto;font-size:.8125rem}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px}
.faq-item{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;position:relative;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--ink-700);
  transform:scaleY(0);transform-origin:top;transition:transform .28s ease;
}
.faq-item[open]{border-color:var(--ink-500);box-shadow:var(--shadow-2)}
.faq-item[open]::before{transform:scaleY(1)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;
  padding:20px 22px;font-size:1.0625rem;font-family:var(--font-serif);color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{
  margin-left:auto;flex-shrink:0;width:24px;height:24px;position:relative;
  transition:transform .28s ease;color:var(--ink-700);
}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-icon::before{left:11px;top:4px;width:2px;height:16px}
.faq-icon::after{top:11px;left:4px;height:2px;width:16px}
.faq-answer{padding:0 22px 22px;color:var(--text-2);line-height:1.85;font-size:.97rem}

/* ---------- cta ---------- */
.cta-band{background:var(--ink-900);color:#fff;padding:56px 0}
@media (min-width:1024px){.cta-band{padding:72px 0}}
.cta-inner{display:flex;flex-direction:column;gap:26px;align-items:flex-start;justify-content:space-between}
@media (min-width:900px){.cta-inner{flex-direction:row;align-items:center}}
.cta-band h2{font-size:clamp(1.4rem,2.4vw,1.9rem);color:#fff}
.cta-band p{color:rgba(255,255,255,.72);margin-top:12px;max-width:52ch;font-size:.97rem;line-height:1.8}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:#c9d8d2;padding:60px 0 0}
.footer-grid{display:grid;gap:34px;grid-template-columns:1fr}
@media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}}
.footer-brand .brand-mark{color:#fff;font-size:20px}
.footer-brand .brand-sub{color:rgba(255,255,255,.55);letter-spacing:.1em}
.footer-desc{color:#9fb2ab;font-size:.875rem;line-height:1.8;margin-top:16px;max-width:34ch}
.footer-title{font-size:.875rem;color:#fff;letter-spacing:.06em;margin-bottom:14px;font-weight:600}
.footer-link{display:block;color:#a9bcb5;font-size:.9375rem;padding:6px 0;transition:color .2s ease,transform .2s ease}
.footer-link:hover{color:#fff;transform:translateX(2px)}
.footer-note{color:#8ea39b;font-size:.8125rem;line-height:1.75;margin-top:12px}
.subscribe{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.subscribe input{
  flex:1 1 160px;height:44px;padding:0 14px;border-radius:12px;
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);
  color:#fff;font-size:.875rem;outline:none;transition:border-color .2s ease,box-shadow .2s ease;
}
.subscribe input::placeholder{color:rgba(255,255,255,.45)}
.subscribe input:focus{border-color:var(--ink-500);box-shadow:0 0 0 2px rgba(46,107,92,.5)}
.subscribe button{
  height:44px;padding:0 18px;border-radius:12px;border:0;background:#fff;color:var(--ink-900);
  font-weight:600;font-size:.875rem;cursor:pointer;transition:background .25s ease;
}
.subscribe button:hover{background:var(--mist-2)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);margin-top:48px;padding:20px 0;
  display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;
  font-size:.8125rem;color:#8ea39b;
}

/* ---------- mobile tabbar ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:grid;grid-template-columns:repeat(5,minmax(0,1fr));
  background:var(--paper);border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
@media (min-width:1024px){.tabbar{display:none}}
.tab-item{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;height:58px;font-size:10px;color:var(--text-2);letter-spacing:.02em;
  transition:color .2s ease;
}
.tab-item svg{width:22px;height:22px}
.tab-item.is-active{color:var(--ink-700);font-weight:600}
.tab-item.is-active::before{
  content:"";position:absolute;top:5px;width:16px;height:3px;border-radius:2px;background:var(--ink-700);
}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s cubic-bezier(.22,.61,.36,1),transform .5s cubic-bezier(.22,.61,.36,1)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}
@media (min-width:1024px){body{padding-bottom:0}}

/* roulang page: category2 */
:root{
    --ink-900:#0E2C26;
    --ink-700:#17453C;
    --ink-500:#2E6B5C;
    --clay-500:#D2603A;
    --paper:#FFFFFF;
    --mist:#F6F3ED;
    --mist-2:#EAF1EE;
    --line:#E4E0D8;
    --text:#141A18;
    --text-2:#5B6663;
    --radius-btn:12px;
    --radius-card:18px;
    --shadow-sm:0 1px 2px rgba(14,44,38,.06);
    --shadow-hover:0 20px 44px -22px rgba(14,44,38,.28);
    --ease:cubic-bezier(.22,.61,.36,1);
  }

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

  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

  body{
    margin:0;
    background:var(--mist);
    color:var(--text);
    font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
    font-size:16px;
    line-height:1.85;
    letter-spacing:0;
    -webkit-font-smoothing:antialiased;
    padding-bottom:72px;
  }

  body h1,body h2,body h3,body h4{
    font-family:'Noto Serif SC','Songti SC','STSong',serif;
    font-weight:700;
    color:var(--ink-900);
    line-height:1.22;
    letter-spacing:-0.01em;
    margin:0;
  }

  body p{margin:0;}
  body ul{margin:0;padding:0;list-style:none;}
  body img{max-width:100%;height:auto;display:block;}
  body a{color:var(--ink-700);text-decoration:none;}
  body button{font-family:inherit;}

  a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
    outline:2px solid var(--ink-500);
    outline-offset:2px;
  }

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }

  .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;
  }

  /* ---------- 头部导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(246,243,237,.96);
    border-bottom:1px solid var(--line);
    transition:background-color .3s var(--ease),box-shadow .3s var(--ease);
  }
  .site-header.is-scrolled{
    background:var(--paper);
    box-shadow:0 10px 30px -24px rgba(14,44,38,.45);
  }
  .header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    height:72px;
    transition:height .3s var(--ease);
  }
  .site-header.is-scrolled .header-inner{height:64px;}

  .brand{display:flex;flex-direction:column;line-height:1.15;flex-shrink:0;}
  .brand-mark{
    font-family:'Noto Serif SC','Songti SC',serif;
    font-weight:700;
    font-size:1.0625rem;
    color:var(--ink-700);
    letter-spacing:-0.01em;
  }
  .brand-sub{
    font-size:.6875rem;
    color:var(--text-2);
    letter-spacing:.14em;
    margin-top:2px;
  }

  .main-nav{display:none;}

  .nav-link{
    position:relative;
    display:inline-block;
    font-size:.9375rem;
    color:var(--text-2);
    padding:6px 0;
    transition:color .25s var(--ease);
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:0;bottom:0;
    width:0;height:2px;
    background:var(--ink-700);
    transition:width .3s var(--ease);
  }
  .nav-link:hover{color:var(--ink-700);}
  .nav-link:hover::after{width:100%;}
  .nav-link.is-active{color:var(--ink-700);font-weight:600;}
  .nav-link.is-active::after{width:100%;}

  .header-actions{display:flex;align-items:center;gap:10px;}

  .icon-btn{
    display:inline-flex;align-items:center;justify-content:center;
    width:40px;height:40px;
    border:1px solid var(--line);
    border-radius:var(--radius-btn);
    background:var(--paper);
    color:var(--ink-700);
    cursor:pointer;
    transition:border-color .25s var(--ease),background-color .25s var(--ease);
  }
  .icon-btn:hover{border-color:var(--ink-500);background:var(--mist-2);}

  .mobile-menu{
    display:none;
    border-top:1px solid var(--line);
    background:var(--paper);
  }
  .mobile-menu.is-open{display:block;}
  .mobile-menu a{
    display:block;
    padding:14px 20px;
    font-size:.9375rem;
    color:var(--text);
    border-bottom:1px solid var(--line);
  }
  .mobile-menu a.is-active{color:var(--ink-700);font-weight:600;}
  .mobile-menu a:last-child{border-bottom:0;}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:44px;
    padding:0 22px;
    border-radius:var(--radius-btn);
    font-size:.9375rem;
    font-weight:600;
    cursor:pointer;
    border:1px solid transparent;
    position:relative;
    overflow:hidden;
    transition:color .3s var(--ease),border-color .3s var(--ease),transform .3s var(--ease),background-color .3s var(--ease);
  }
  .btn-sm{min-height:40px;padding:0 18px;font-size:.875rem;}
  .btn-primary{background:var(--ink-700);color:#fff;}
  .btn-primary::before{
    content:"";position:absolute;inset:0;
    background:var(--ink-500);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform .35s var(--ease);
    z-index:0;
  }
  .btn-primary>span{position:relative;z-index:1;}
  .btn-primary:hover::before{transform:scaleX(1);}
  .btn-primary:active{transform:translateY(1px);}

  .btn-outline{
    background:transparent;
    color:var(--ink-700);
    border-color:var(--ink-700);
  }
  .btn-outline:hover{background:var(--mist-2);}

  .btn-light{
    background:#fff;
    color:var(--ink-900);
    border-color:#fff;
  }
  .btn-light:hover{background:var(--mist-2);border-color:var(--mist-2);}

  .link-arrow{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:.9375rem;
    font-weight:600;
    color:var(--ink-700);
    border-bottom:1px solid transparent;
    padding-bottom:2px;
    transition:border-color .3s var(--ease),color .3s var(--ease);
  }
  .link-arrow:hover{border-color:var(--ink-700);color:var(--ink-500);}
  .link-arrow svg{transition:transform .3s var(--ease);}
  .link-arrow:hover svg{transform:translateX(3px);}

  /* ---------- 眉标 / 徽章 ---------- */
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-size:.75rem;
    letter-spacing:.14em;
    color:var(--ink-500);
    text-transform:uppercase;
    margin-bottom:18px;
  }
  .eyebrow::before{
    content:"";
    width:28px;height:2px;
    background:var(--ink-500);
    display:inline-block;
  }

  .badge{
    display:inline-flex;
    align-items:center;
    padding:4px 12px;
    border-radius:999px;
    background:var(--mist-2);
    color:var(--ink-700);
    font-size:.75rem;
    letter-spacing:.04em;
    font-weight:600;
  }
  .badge-clay{background:rgba(210,96,58,.12);color:var(--clay-500);}

  /* ---------- 小 Hero ---------- */
  .cat-hero{
    background:var(--mist-2);
    border-bottom:1px solid var(--line);
    padding:64px 0 60px;
  }
  .hero-narrow{
    max-width:760px;
    margin:0 auto;
    text-align:center;
  }
  .hero-narrow h1{
    font-size:clamp(1.9rem,4.2vw,3rem);
    margin-bottom:18px;
  }
  .hero-narrow .lead{
    font-size:1.0625rem;
    line-height:1.85;
    color:var(--text-2);
    margin-bottom:26px;
  }
  .hero-meta{
    display:flex;
    flex-wrap:wrap;
    justify-content:center;
    gap:10px;
    margin-top:22px;
  }

  /* ---------- 通用板块 ---------- */
  .section{padding:72px 0;}
  .section-alt{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .section-head{max-width:720px;margin-bottom:40px;}
  .section-head h2{font-size:clamp(1.5rem,2.6vw,2.125rem);margin-bottom:14px;}
  .section-head p{color:var(--text-2);}

  /* ---------- 对比带 ---------- */
  .compare-grid{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    background:var(--paper);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-sm);
    overflow:hidden;
  }
  .compare-item{
    padding:26px 22px;
    border-bottom:1px solid var(--line);
    border-right:1px solid var(--line);
  }
  .compare-item:nth-child(2n){border-right:0;}
  .compare-item:nth-child(n+3){border-bottom:0;}
  .compare-num{
    display:block;
    font-family:'Noto Serif SC','Songti SC',serif;
    font-size:1.75rem;
    font-weight:700;
    color:var(--ink-700);
    line-height:1.2;
    font-variant-numeric:tabular-nums;
    margin-bottom:8px;
  }
  .compare-label{
    display:block;
    font-size:.9375rem;
    font-weight:600;
    color:var(--text);
    margin-bottom:6px;
  }
  .compare-desc{font-size:.875rem;color:var(--text-2);line-height:1.7;}

  /* ---------- 卡片墙 ---------- */
  .cards-wall{
    display:grid;
    grid-template-columns:1fr;
    gap:24px;
  }

  .card{
    background:var(--paper);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-sm);
    padding:24px;
    transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
  }
  .card:hover{
    transform:translateY(-2px);
    border-color:var(--ink-500);
    box-shadow:var(--shadow-hover);
  }
  .card h3{
    font-size:1.125rem;
    margin-bottom:10px;
  }
  .card p{font-size:.9375rem;color:var(--text-2);line-height:1.8;margin-bottom:16px;}

  .card-media{
    margin:-24px -24px 20px;
    border-radius:var(--radius-card) var(--radius-card) 0 0;
    overflow:hidden;
    background:var(--mist-2);
    aspect-ratio:16/10;
  }
  .card-media img{
    width:100%;height:100%;
    object-fit:cover;
    transition:transform .5s var(--ease);
  }
  .card:hover .card-media img{transform:scale(1.03);}

  .card-icon{
    display:inline-flex;align-items:center;justify-content:center;
    width:44px;height:44px;
    border-radius:12px;
    background:var(--mist-2);
    color:var(--ink-700);
    margin-bottom:16px;
  }

  .card.is-dark{
    background:var(--ink-700);
    border-color:var(--ink-700);
    color:#fff;
  }
  .card.is-dark h3{color:#fff;}
  .card.is-dark p{color:rgba(255,255,255,.78);}
  .card.is-dark .card-icon{background:rgba(255,255,255,.14);color:#fff;}
  .card.is-dark .link-arrow{color:#fff;}
  .card.is-dark .link-arrow:hover{color:rgba(255,255,255,.8);border-color:#fff;}
  .card.is-dark .badge{background:rgba(255,255,255,.16);color:#fff;}

  .card-inline-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;}

  /* ---------- 适配说明 ---------- */
  .fit-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:36px;
    align-items:start;
  }
  .fit-list{display:grid;gap:20px;}
  .fit-item{display:flex;gap:16px;align-items:flex-start;}
  .fit-item .dot{
    flex:0 0 auto;
    width:38px;height:38px;
    border-radius:12px;
    background:var(--mist-2);
    color:var(--ink-700);
    display:flex;align-items:center;justify-content:center;
  }
  .fit-item h3{font-size:1.0625rem;margin-bottom:6px;}
  .fit-item p{font-size:.9375rem;color:var(--text-2);line-height:1.75;}

  /* ---------- FAQ ---------- */
  .faq-list{display:grid;gap:14px;max-width:860px;}
  .faq-item{
    background:var(--paper);
    border:1px solid var(--line);
    border-left:3px solid transparent;
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-sm);
    transition:border-color .28s var(--ease),box-shadow .28s var(--ease);
  }
  .faq-item[open]{border-left-color:var(--ink-700);box-shadow:var(--shadow-hover);}
  .faq-item summary{
    list-style:none;
    cursor:pointer;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    padding:20px 24px;
    font-size:1.0625rem;
    font-weight:600;
    color:var(--ink-900);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::marker{content:"";}
  .faq-icon{
    position:relative;
    flex:0 0 auto;
    width:18px;height:18px;
  }
  .faq-icon::before,.faq-icon::after{
    content:"";
    position:absolute;
    background:var(--ink-700);
    border-radius:2px;
    transition:transform .28s var(--ease),opacity .28s var(--ease);
  }
  .faq-icon::before{left:0;top:8px;width:18px;height:2px;}
  .faq-icon::after{left:8px;top:0;width:2px;height:18px;}
  .faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0;}
  .faq-body{
    padding:0 24px 22px;
    font-size:1rem;
    line-height:1.85;
    color:var(--text-2);
    max-width:70ch;
  }

  /* ---------- CTA 带 ---------- */
  .cta-band{
    background:var(--ink-900);
    color:#fff;
    padding:64px 0;
  }
  .cta-inner{
    display:grid;
    grid-template-columns:1fr;
    gap:28px;
    align-items:center;
  }
  .cta-band h2{color:#fff;font-size:clamp(1.4rem,2.4vw,2rem);margin-bottom:12px;}
  .cta-band p{color:rgba(255,255,255,.72);font-size:.9375rem;line-height:1.8;max-width:56ch;}
  .cta-contact{
    display:flex;flex-wrap:wrap;gap:20px;
    margin-top:26px;padding-top:22px;
    border-top:1px solid rgba(255,255,255,.16);
    font-size:.875rem;color:rgba(255,255,255,.68);
  }

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:var(--ink-900);
    color:rgba(255,255,255,.72);
    padding:60px 0 26px;
    border-top:1px solid rgba(255,255,255,.08);
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:34px;
    padding-bottom:36px;
    border-bottom:1px solid rgba(255,255,255,.12);
  }
  .site-footer .brand-mark{color:#fff;}
  .site-footer .brand-sub{color:rgba(255,255,255,.6);}
  .footer-desc{
    font-size:.875rem;
    line-height:1.8;
    color:rgba(255,255,255,.66);
    margin-top:14px;
    max-width:34ch;
  }
  .footer-title{
    font-family:'Noto Serif SC','Songti SC',serif;
    font-size:1rem;
    color:#fff;
    margin-bottom:14px;
  }
  .footer-link{
    display:block;
    font-size:.875rem;
    color:rgba(255,255,255,.68);
    padding:5px 0;
    transition:color .25s var(--ease),padding-left .25s var(--ease);
  }
  .footer-link:hover{color:#fff;padding-left:4px;}
  .footer-note{
    font-size:.8125rem;
    color:rgba(255,255,255,.58);
    line-height:1.7;
    margin-top:10px;
  }
  .subscribe{display:flex;gap:8px;margin-top:12px;}
  .subscribe input{
    flex:1 1 auto;
    min-width:0;
    height:44px;
    padding:0 14px;
    border-radius:var(--radius-btn);
    border:1px solid rgba(255,255,255,.2);
    background:rgba(255,255,255,.06);
    color:#fff;
    font-size:.875rem;
  }
  .subscribe input::placeholder{color:rgba(255,255,255,.45);}
  .subscribe input:focus{outline:none;border-color:var(--ink-500);box-shadow:0 0 0 2px rgba(46,107,92,.5);}
  .subscribe button{
    flex:0 0 auto;
    height:44px;
    padding:0 18px;
    border-radius:var(--radius-btn);
    border:0;
    background:#fff;
    color:var(--ink-900);
    font-size:.875rem;
    font-weight:600;
    cursor:pointer;
    transition:background-color .25s var(--ease);
  }
  .subscribe button:hover{background:var(--mist-2);}
  .footer-bottom{
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
    gap:10px;
    padding-top:22px;
    font-size:.8125rem;
    color:rgba(255,255,255,.5);
  }

  /* ---------- 移动底部 Tab ---------- */
  .mobile-tabbar{
    position:fixed;
    left:0;right:0;bottom:0;
    z-index:70;
    display:grid;
    grid-template-columns:repeat(4,1fr);
    background:var(--paper);
    border-top:1px solid var(--line);
    padding-bottom:env(safe-area-inset-bottom);
    box-shadow:0 -8px 24px -20px rgba(14,44,38,.4);
  }
  .tab-item{
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:3px;
    height:58px;
    font-size:10px;
    color:var(--text-2);
    position:relative;
    transition:color .25s var(--ease);
  }
  .tab-item svg{width:22px;height:22px;}
  .tab-item.is-active{color:var(--ink-700);font-weight:600;}
  .tab-item.is-active::before{
    content:"";
    position:absolute;
    top:6px;
    width:16px;height:3px;
    border-radius:999px;
    background:var(--ink-700);
  }

  /* ---------- 动效 ---------- */
  .reveal{
    opacity:0;
    transform:translateY(16px);
    transition:opacity .5s var(--ease),transform .5s var(--ease);
  }
  .reveal.is-visible{opacity:1;transform:none;}

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

  /* ---------- 断点 ---------- */
  @media (min-width:640px){
    .cards-wall{gap:26px;}
    .card{padding:28px;}
    .card-media{margin:-28px -28px 22px;}
    .cta-inner{grid-template-columns:1.4fr 1fr;}
  }

  @media (min-width:768px){
    .container{padding-left:24px;padding-right:24px;}
    .section{padding:88px 0;}
    .cat-hero{padding:76px 0 70px;}
    .compare-grid{grid-template-columns:repeat(4,1fr);}
    .compare-item{border-bottom:0;}
    .compare-item:nth-child(2n){border-right:1px solid var(--line);}
    .compare-item:last-child{border-right:0;}
    .cards-wall{grid-template-columns:1fr 1fr;gap:28px;align-items:start;}
    .cards-wall>li:nth-child(even){margin-top:40px;}
    .fit-grid{grid-template-columns:1fr 1fr;gap:48px;}
    .footer-grid{grid-template-columns:repeat(2,1fr);}
  }

  @media (min-width:1024px){
    body{padding-bottom:0;}
    .container{padding-left:32px;padding-right:32px;}
    .main-nav{display:flex;align-items:center;gap:28px;}
    .mobile-tabbar{display:none;}
    .header-inner{height:76px;}
    .icon-btn.lg-hidden{display:none;}
    .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px;}
  }

/* roulang page: category3 */
:root{
  --ink-900:#0E2C26;
  --ink-700:#17453C;
  --ink-500:#2E6B5C;
  --clay-500:#D2603A;
  --paper:#FFFFFF;
  --mist:#F6F3ED;
  --mist-2:#EAF1EE;
  --line:#E4E0D8;
  --text:#141A18;
  --text-2:#5B6663;
  --radius-btn:12px;
  --radius-card:18px;
  --radius-img:14px;
  --shadow-sm:0 1px 2px rgba(14,44,38,.06);
  --shadow-lg:0 20px 44px -22px rgba(14,44,38,.28);
  --font-serif:'Noto Serif SC','Songti SC','STSong',serif;
  --font-sans:'PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--mist);
  -webkit-font-smoothing:antialiased;
}
@media (min-width:768px){ body{font-size:17px} }
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
input{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:700;color:var(--ink-900);letter-spacing:-.02em;line-height:1.25}
p{margin:0}
:focus-visible{outline:2px solid var(--ink-500);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.container{padding-left:24px;padding-right:24px}}
@media (min-width:1024px){.container{padding-left:32px;padding-right:32px}}

.section{padding-top:56px;padding-bottom:56px}
@media (min-width:1024px){.section{padding-top:96px;padding-bottom:96px}}
.section-alt{background:var(--paper)}
.eyebrow{
  display:inline-block;font-size:.75rem;letter-spacing:.12em;color:var(--ink-700);
  background:var(--mist-2);border-radius:999px;padding:6px 14px;margin-bottom:18px;font-weight:600;
}
.lead{color:var(--text-2);font-size:1.0625rem;line-height:1.9}
.sec-head{max-width:760px;margin-bottom:36px}
.sec-head h2{font-size:clamp(1.5rem,2.6vw,2.25rem);margin-bottom:14px;position:relative;padding-left:0}
.sec-head .rule{display:block;width:28px;height:2px;background:var(--ink-700);margin-bottom:16px;border-radius:2px}
@media (min-width:1024px){.sec-head{margin-bottom:52px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:.9375rem;font-weight:600;border:1px solid transparent;
  transition:background-color .3s var(--ease),color .3s var(--ease),border-color .3s var(--ease),transform .3s var(--ease);
  position:relative;overflow:hidden;
}
.btn-sm{height:40px;padding:0 18px;font-size:.875rem}
.btn-primary{background:var(--ink-700);color:#fff}
.btn-primary:hover{background:var(--ink-900)}
.btn-ghost{background:transparent;border-color:var(--ink-700);color:var(--ink-700)}
.btn-ghost:hover{background:var(--mist-2)}
.btn-invert{background:#fff;color:var(--ink-900)}
.btn-invert:hover{background:var(--mist-2)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12)}
.btn:active{transform:translateY(1px)}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--ink-700);font-weight:600;font-size:.9375rem;
  border-bottom:1px solid transparent;transition:border-color .3s var(--ease),color .3s var(--ease);
}
.link-arrow:hover{border-color:var(--ink-700);color:var(--ink-900)}

.tag{display:inline-block;background:var(--mist-2);color:var(--ink-700);border-radius:999px;padding:4px 12px;font-size:.75rem;letter-spacing:.04em;font-weight:600}
.tag-clay{background:rgba(210,96,58,.12);color:var(--clay-500)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(246,243,237,.96);
  border-bottom:1px solid transparent;transition:background-color .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{background:var(--paper);border-bottom-color:var(--line);box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:76px;gap:20px;transition:height .3s var(--ease)}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:flex;flex-direction:column;line-height:1.1;gap:2px}
.brand-mark{font-family:var(--font-serif);font-weight:700;font-size:1.125rem;color:var(--ink-900);letter-spacing:-.01em}
.brand-sub{font-size:.6875rem;color:var(--text-2);letter-spacing:.06em}
.main-nav{display:none;align-items:center;gap:28px}
@media (min-width:1024px){.main-nav{display:flex}}
.nav-link{
  position:relative;font-size:.9375rem;color:var(--text-2);padding:6px 0;font-weight:500;
  transition:color .3s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--ink-700);
  transition:width .3s var(--ease);
}
.nav-link:hover{color:var(--ink-700)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--ink-700);font-weight:600}
.nav-link.is-active::after{width:100%}
.header-actions{display:flex;align-items:center;gap:12px}
.header-cta{display:none}
@media (min-width:1024px){.header-cta{display:inline-flex}}
.menu-toggle{
  width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:var(--paper);display:flex;align-items:center;justify-content:center;color:var(--ink-700);
}
@media (min-width:1024px){.menu-toggle{display:none}}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:var(--paper)}
.mobile-drawer.is-open{display:block}
.mobile-drawer .drawer-inner{padding:12px 20px 20px;display:flex;flex-direction:column}
.drawer-link{padding:13px 0;border-bottom:1px solid var(--line);color:var(--text-2);font-size:.9375rem}
.drawer-link:last-child{border-bottom:none}
.drawer-link.is-active{color:var(--ink-700);font-weight:600}

/* ---------- 底部 Tab ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:flex;
  background:var(--paper);border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
@media (min-width:1024px){.tabbar{display:none}}
.tab-item{
  flex:1;height:58px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:.625rem;color:var(--text-2);position:relative;
}
.tab-item svg{width:22px;height:22px}
.tab-item.is-active{color:var(--ink-700);font-weight:600}
.tab-item.is-active::before{
  content:"";position:absolute;top:6px;width:16px;height:3px;border-radius:2px;background:var(--ink-700);
}
@media (max-width:1023px){ body{padding-bottom:72px} }

/* ---------- Hero ---------- */
.hero{background:var(--mist);padding-top:44px;padding-bottom:52px;border-bottom:1px solid var(--line)}
@media (min-width:1024px){.hero{padding-top:76px;padding-bottom:84px}}
.hero-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:6fr 5fr;gap:56px}}
.hero h1{font-size:clamp(1.75rem,4.2vw,2.875rem);margin-bottom:18px}
.hero .lead{max-width:42rem;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);border:1px solid var(--mist-2);box-shadow:var(--shadow-lg)}
.hero-media::before{
  content:"";position:absolute;top:-10px;right:18px;width:64px;height:12px;
  border-top:2px solid rgba(23,69,60,.35);border-left:2px solid rgba(23,69,60,.35);border-top-left-radius:10px;
}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-meta span{font-size:.8125rem;color:var(--text-2);display:inline-flex;align-items:center;gap:6px}
.hero-meta span::before{content:"";width:5px;height:5px;border-radius:999px;background:var(--ink-500)}

/* ---------- 自查双栏 ---------- */
.check-grid{display:grid;grid-template-columns:1fr;gap:28px}
@media (min-width:1024px){.check-grid{grid-template-columns:5fr 6fr;gap:56px;align-items:center}}
.check-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);box-shadow:var(--shadow-sm)}
.check-list li{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.check-list li:last-child{border-bottom:none}
.check-index{
  flex:0 0 auto;width:32px;height:32px;border-radius:999px;background:var(--mist-2);
  color:var(--ink-700);font-weight:700;font-size:.875rem;display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.check-list h3{font-size:1.0625rem;margin-bottom:6px}
.check-list p{color:var(--text-2);font-size:.9375rem;line-height:1.8}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:8px;padding-left:30px}
.timeline::before{content:"";position:absolute;left:7px;top:10px;bottom:10px;width:2px;background:linear-gradient(180deg,var(--ink-500),rgba(46,107,92,.18))}
.tl-item{position:relative;padding:0 0 34px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{position:absolute;left:-30px;top:6px;width:16px;height:16px;border-radius:999px;background:var(--paper);border:3px solid var(--ink-500)}
.tl-item.is-key .tl-dot{border-color:var(--clay-500)}
.tl-step{font-family:var(--font-serif);font-size:.8125rem;letter-spacing:.1em;color:var(--ink-500);font-weight:700;display:block;margin-bottom:8px}
.tl-item h3{font-size:1.1875rem;margin-bottom:8px}
.tl-item p{color:var(--text-2);font-size:.9375rem;line-height:1.85;max-width:52rem}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}

/* ---------- 三列小卡 ---------- */
.mini-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:640px){.mini-grid{grid-template-columns:repeat(3,1fr)}}
.mini-card{background:var(--mist-2);border-radius:var(--radius-card);padding:26px 22px;transition:transform .3s var(--ease)}
.mini-card:hover{transform:translateY(-2px)}
.mini-icon{
  width:40px;height:40px;border-radius:12px;background:var(--paper);display:flex;align-items:center;justify-content:center;
  color:var(--ink-700);margin-bottom:14px;
}
.mini-card h3{font-size:1.0625rem;margin-bottom:8px}
.mini-card p{color:var(--text-2);font-size:.9375rem;line-height:1.8}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:16px}
.faq-item{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .3s var(--ease)}
.faq-item[open]{border-left:3px solid var(--ink-700)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:22px 24px;font-family:var(--font-serif);font-weight:600;font-size:1.0625rem;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-mark{flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .28s var(--ease);margin-top:3px}
.faq-mark::before,.faq-mark::after{content:"";position:absolute;background:var(--ink-700);border-radius:2px}
.faq-mark::before{left:0;top:10px;width:22px;height:2px}
.faq-mark::after{left:10px;top:0;width:2px;height:22px}
.faq-item[open] .faq-mark{transform:rotate(45deg)}
.faq-body{padding:0 24px 24px;color:var(--text-2);font-size:1rem;line-height:1.85}

/* ---------- 相关分类 ---------- */
.related-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:768px){.related-grid{grid-template-columns:repeat(2,1fr)}}
.related-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 24px;
  box-shadow:var(--shadow-sm);transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
  display:block;
}
.related-card:hover{transform:translateY(-2px);border-color:var(--ink-500);box-shadow:var(--shadow-lg)}
.related-card h3{font-size:1.125rem;margin:12px 0 8px}
.related-card p{color:var(--text-2);font-size:.9375rem;line-height:1.8;margin-bottom:14px}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--ink-900);color:#fff}
.cta-band h2{color:#fff;font-size:clamp(1.5rem,2.6vw,2.125rem);margin-bottom:14px}
.cta-band p{color:rgba(255,255,255,.76);font-size:1rem;max-width:44rem}
.cta-inner{display:grid;grid-template-columns:1fr;gap:26px;align-items:center}
@media (min-width:1024px){.cta-inner{grid-template-columns:7fr 4fr;gap:48px}}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
@media (min-width:1024px){.cta-actions{justify-content:flex-end}}
.cta-contact{margin-top:26px;padding-top:20px;border-top:1px solid rgba(255,255,255,.16);display:flex;flex-wrap:wrap;gap:12px 32px;font-size:.875rem;color:rgba(255,255,255,.7)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.78);padding-top:56px;font-size:.9375rem}
.footer-grid{display:grid;grid-template-columns:1fr;gap:30px;padding-bottom:40px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px}}
.footer-brand{display:flex;flex-direction:column;gap:4px}
.site-footer .brand-mark{color:#fff;font-size:1.125rem}
.site-footer .brand-sub{color:rgba(255,255,255,.55);font-size:.6875rem;letter-spacing:.06em}
.footer-desc{color:rgba(255,255,255,.66);font-size:.875rem;line-height:1.85;margin-top:12px;max-width:24rem}
.footer-title{color:#fff;font-size:1rem;margin-bottom:14px;font-family:var(--font-serif)}
.footer-link{display:block;color:rgba(255,255,255,.72);padding:6px 0;font-size:.9375rem;transition:color .3s var(--ease)}
.footer-link:hover{color:#fff}
.footer-note{color:rgba(255,255,255,.6);font-size:.8125rem;line-height:1.8;margin-bottom:12px}
.subscribe{display:flex;gap:8px;flex-wrap:wrap}
.subscribe input{
  flex:1 1 160px;height:48px;border-radius:var(--radius-btn);border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.06);color:#fff;padding:0 14px;font-size:.875rem;
}
.subscribe input::placeholder{color:rgba(255,255,255,.45)}
.subscribe input:focus{outline:none;border-color:var(--ink-500);box-shadow:0 0 0 2px rgba(46,107,92,.6)}
.subscribe button{
  height:48px;padding:0 20px;border-radius:var(--radius-btn);border:none;background:#fff;color:var(--ink-900);
  font-weight:600;font-size:.875rem;transition:background-color .3s var(--ease);
}
.subscribe button:hover{background:var(--mist-2)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:8px 24px;
  justify-content:space-between;font-size:.8125rem;color:rgba(255,255,255,.55);
}
.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}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation:none!important;transition:none!important}
}