/* roulang page: index */
:root{
  --c-primary:#1E3A32;
  --c-primary-deep:#14261F;
  --c-accent:#C4743C;
  --c-accent-soft:#D98A4E;
  --c-muted:#7E8C86;
  --c-bg:#F6F4EF;
  --c-surface:#FFFFFF;
  --c-tint:#F0E6DA;
  --c-line:#E4E0D8;
  --c-text:#1B1D1B;
  --c-text-2:#5C615D;
  --c-success:#2F7A5A;
  --c-warn:#B98A2B;
  --r-sm:8px;
  --r-md:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,38,31,.06);
  --sh-2:0 8px 24px -12px rgba(20,38,31,.18);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --bs-primary:#1E3A32;
  --bs-body-color:#1B1D1B;
  --bs-body-bg:#F6F4EF;
  --bs-border-color:#E4E0D8;
  --bs-border-radius:8px;
  --bs-link-color:#1E3A32;
  --bs-link-hover-color:#C4743C;
  --bs-emphasis-color:#1B1D1B;
  --bs-secondary-color:#5C615D;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:700;letter-spacing:-.01em;color:var(--c-text);margin:0;}
h1{font-size:clamp(34px,5.4vw,60px);line-height:1.15;letter-spacing:-.02em;}
h2{font-size:clamp(26px,3.2vw,36px);line-height:1.3;}
h3{font-size:21px;line-height:1.45;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;}

.container{max-width:1180px;width:100%;margin:0 auto;padding-left:24px;padding-right:24px;}
section[id],div[id]{scroll-margin-top:118px;}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--c-primary-deep);
  color:#EDEAE3;
  font-size:13px;
  min-height:38px;
}
.topbar__inner{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:38px;
  padding-top:4px;
  padding-bottom:4px;
}
.topbar__brand{
  flex:0 0 auto;
  font-weight:600;
  letter-spacing:.04em;
  color:#EDEAE3;
  white-space:nowrap;
}
.topbar__notice{
  flex:1 1 auto;
  overflow:hidden;
  max-width:480px;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
}
.topbar__track{
  display:flex;
  gap:56px;
  white-space:nowrap;
  animation:marquee 20s linear infinite;
  will-change:transform;
}
.topbar__track span{color:rgba(237,234,227,.78);}
@keyframes marquee{from{transform:translateX(0);}to{transform:translateX(-50%);}}
.topbar__action{
  flex:0 0 auto;
  margin-left:auto;
  color:var(--c-accent-soft);
  border-bottom:1px solid transparent;
  white-space:nowrap;
}
.topbar__action:hover{color:#fff;border-bottom-color:var(--c-accent-soft);}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
}
.site-nav{padding:0;background:transparent;}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  min-height:72px;
  padding-top:10px;
  padding-bottom:10px;
}
.brand{display:flex;flex-direction:column;line-height:1.15;flex:0 0 auto;}
.brand__mark{
  font-family:var(--font-serif);
  font-size:22px;
  font-weight:700;
  color:var(--c-primary);
  letter-spacing:.02em;
}
.brand__sub{
  font-size:12px;
  color:var(--c-muted);
  letter-spacing:.22em;
  margin-top:3px;
}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;
  display:block;
  padding:10px 14px;
  font-size:14.5px;
  color:var(--c-text-2);
  border-radius:var(--r-sm);
  white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:4px;
  height:2px;
  background:var(--c-accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--c-primary);background:rgba(30,58,50,.05);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.btn-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:42px;
  padding:0 22px;
  margin-left:10px;
  border-radius:var(--r-sm);
  background:var(--c-primary);
  color:#F6F4EF;
  font-size:14.5px;
  font-weight:600;
  border:1px solid var(--c-primary);
  transition:background .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  white-space:nowrap;
}
.btn-cta:hover{background:#182F28;color:#fff;border-bottom:2px solid var(--c-accent);box-shadow:var(--sh-2);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--c-line);
  border-radius:var(--r-sm);
  background:var(--c-surface);
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
  padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-primary);border-radius:2px;}
.nav-drawer{width:308px !important;background:var(--c-surface);border-right:1px solid var(--c-line);}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--c-line);padding:18px 22px;}
.nav-drawer .offcanvas-body{padding:14px 22px 26px;}
.drawer-link{
  display:block;
  padding:15px 4px;
  font-size:16px;
  color:var(--c-text);
  border-bottom:1px solid var(--c-line);
}
.drawer-link:hover{color:var(--c-accent);}
.drawer-cta{width:100%;margin-top:22px;}

/* ---------- 按钮 ---------- */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:52px;padding:0 28px;
  border-radius:var(--r-sm);
  background:var(--c-primary);
  color:#F6F4EF;
  font-size:16px;font-weight:600;
  border:1px solid var(--c-primary);
  transition:background .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
}
.btn-main:hover{background:#182F28;color:#fff;box-shadow:var(--sh-2);border-bottom:2px solid var(--c-accent);transform:translateY(-1px);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:52px;padding:0 28px;
  border-radius:var(--r-sm);
  background:transparent;
  color:var(--c-primary);
  font-size:16px;font-weight:600;
  border:1px solid var(--c-primary);
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.btn-ghost:hover{background:rgba(30,58,50,.06);color:var(--c-primary);transform:translateY(-1px);}
.btn-onDark{
  display:inline-flex;align-items:center;justify-content:center;
  height:52px;padding:0 28px;border-radius:var(--r-sm);
  background:var(--c-accent);color:#fff;font-size:16px;font-weight:600;border:1px solid var(--c-accent);
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.btn-onDark:hover{background:#B76A34;color:#fff;transform:translateY(-1px);}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-primary);
  font-size:14.5px;
  font-weight:600;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.text-link::before{content:"→";color:var(--c-accent);font-weight:700;}
.text-link:hover{color:var(--c-accent);border-bottom-color:var(--c-accent);}

/* ---------- 徽章 / 标签 ---------- */
.badge-tag{
  display:inline-flex;align-items:center;
  height:26px;padding:0 12px;
  border-radius:var(--r-pill);
  background:var(--c-tint);
  color:#8A5326;
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.badge-outline{
  display:inline-flex;align-items:center;gap:8px;
  height:34px;padding:0 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  font-size:13.5px;color:var(--c-text-2);
}
.badge-outline i{color:var(--c-accent);font-style:normal;font-weight:700;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:76px 0 0;
  overflow:hidden;
}
.hero__bg{position:absolute;inset:0;z-index:0;overflow:hidden;}
.hero__bg img{width:100%;height:100%;object-fit:cover;}
.hero__bg::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(246,244,239,.95) 0%,rgba(246,244,239,.88) 52%,rgba(246,244,239,.98) 100%);
}
.hero > .container{position:relative;z-index:1;}
.hero__eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13.5px;color:var(--c-muted);letter-spacing:.14em;
  margin-bottom:20px;
}
.hero__eyebrow::before{content:"";width:28px;height:2px;background:var(--c-accent);}
.hero h1{margin-bottom:22px;}
.hero h1 em{font-style:normal;color:var(--c-primary);box-shadow:inset 0 -14px 0 rgba(196,116,60,.16);}
.hero__sub{
  font-size:19px;
  line-height:1.8;
  color:var(--c-text-2);
  max-width:34em;
  margin-bottom:32px;
}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero__badges{display:flex;flex-wrap:wrap;align-items:center;gap:12px;}
.hero__badges span{
  font-family:var(--font-serif);
  font-size:14.5px;
  color:var(--c-text-2);
}
.hero__badges i{color:var(--c-accent);font-style:normal;padding:0 4px;}
.hero__visual{
  position:relative;
  margin:0;
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--sh-2);
  border:1px solid var(--c-line);
  background:var(--c-surface);
}
.hero__visual img{aspect-ratio:4/5;object-fit:cover;width:100%;}
.hero__visual figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:16px 18px;
  background:linear-gradient(180deg,rgba(20,38,31,0) 0%,rgba(20,38,31,.72) 100%);
  color:#EDEAE3;font-size:13.5px;
}
.hero-index{
  position:relative;z-index:1;
  margin-top:64px;
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
  background:rgba(255,255,255,.72);
}
.hero-index__track{
  display:flex;gap:34px;
  overflow-x:auto;
  padding:16px 24px;
  scrollbar-width:none;
}
.hero-index__track::-webkit-scrollbar{display:none;}
.hero-index__track a{
  font-size:14.5px;color:var(--c-text-2);white-space:nowrap;
  padding-bottom:2px;border-bottom:2px solid transparent;
}
.hero-index__track a:hover,.hero-index__track a.is-active{color:var(--c-primary);border-bottom-color:var(--c-accent);font-weight:600;}

/* ---------- 通用板块 ---------- */
.section{padding:104px 0;}
.section--tight{padding:80px 0;}
.section--dark{background:var(--c-primary-deep);color:#EDEAE3;}
.section--dark h2,.section--dark h3{color:#EDEAE3;}
.section--tint{background:var(--c-tint);}
.section-head{margin-bottom:52px;max-width:760px;}
.section-head__kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.16em;color:var(--c-accent);
  margin-bottom:14px;font-weight:600;
}
.section-head__kicker::before{content:"";width:22px;height:2px;background:var(--c-accent);}
.section-head p{margin-top:16px;color:var(--c-text-2);font-size:16.5px;}
.section--dark .section-head p{color:rgba(237,234,227,.76);}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;max-width:none;}

/* ---------- 卖点错位图文 ---------- */
.value-row{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:56px;
  align-items:center;
  padding:44px 0;
  border-top:1px solid var(--c-line);
}
.value-row:first-of-type{border-top:none;padding-top:0;}
.value-row{grid-template-columns:7fr 5fr;}
.value-row .value-row__text{order:2;}
.value-row .value-row__media{order:1;}
.value-row--flip{grid-template-columns:5fr 7fr;}
.value-row--flip .value-row__text{order:1;}
.value-row--flip .value-row__media{order:2;}
.value-row__num{
  display:block;
  font-family:var(--font-serif);
  font-size:44px;
  line-height:1;
  color:var(--c-accent);
  opacity:.85;
  margin-bottom:16px;
  font-variant-numeric:tabular-nums;
}
.value-row__text h3{margin-bottom:14px;}
.value-row__text p{color:var(--c-text-2);}
.value-row__media{
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--c-line);
  background:var(--c-surface);
  box-shadow:var(--sh-1);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.value-row__media:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.value-row__media img{aspect-ratio:16/10;object-fit:cover;width:100%;}

/* ---------- 演示横向滚动带 ---------- */
.demo-track{
  display:flex;
  gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:6px 24px 26px;
  margin:0 -24px;
  scrollbar-width:thin;
}
.demo-track::-webkit-scrollbar{height:6px;}
.demo-track::-webkit-scrollbar-thumb{background:var(--c-line);border-radius:999px;}
.demo-card{
  flex:0 0 268px;
  scroll-snap-align:start;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.demo-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.demo-card__media img{aspect-ratio:3/4;object-fit:cover;width:100%;}
.demo-card__body{padding:20px 22px 24px;}
.demo-card__body h3{font-size:17.5px;margin:12px 0 8px;}
.demo-card__body p{font-size:14.5px;color:var(--c-text-2);line-height:1.75;}

/* ---------- 证据深色带 ---------- */
.proof-band{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid rgba(237,234,227,.16);
  border-bottom:1px solid rgba(237,234,227,.16);
  margin:12px 0 48px;
}
.proof-item{
  padding:36px 26px 32px;
  border-left:1px solid rgba(237,234,227,.16);
}
.proof-item:first-child{border-left:none;}
.proof-item__num{
  font-family:var(--font-serif);
  font-size:clamp(38px,4.4vw,52px);
  line-height:1;
  color:#EDEAE3;
  font-variant-numeric:tabular-nums;
  display:flex;align-items:baseline;gap:6px;
}
.proof-item__num small{font-size:15px;color:var(--c-accent-soft);font-family:var(--font-sans);font-weight:600;}
.proof-item p{margin-top:12px;font-size:13px;color:rgba(237,234,227,.68);letter-spacing:.03em;}
.proof-quote{
  font-family:var(--font-serif);
  font-size:19px;
  line-height:1.9;
  color:rgba(237,234,227,.92);
  border-left:3px solid var(--c-accent);
  padding-left:24px;
  max-width:820px;
}
.proof-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px;}
.proof-badges span{
  display:inline-flex;align-items:center;gap:8px;
  height:36px;padding:0 18px;
  border-radius:var(--r-pill);
  border:1px solid rgba(237,234,227,.24);
  font-size:13.5px;color:rgba(237,234,227,.85);
}

/* ---------- 方案对比 ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;}
.plan-card{
  border-radius:var(--r-md);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  padding:36px 34px 38px;
  box-shadow:var(--sh-1);
  display:flex;flex-direction:column;
}
.plan-card--main{
  background:var(--c-primary-deep);
  border-color:var(--c-primary-deep);
  color:#EDEAE3;
}
.plan-card--main h3{color:#EDEAE3;}
.plan-card__label{font-size:13px;letter-spacing:.16em;color:var(--c-accent);font-weight:600;margin-bottom:14px;}
.plan-card h3{margin-bottom:12px;}
.plan-card__note{font-size:14.5px;color:var(--c-text-2);line-height:1.8;margin-bottom:26px;}
.plan-card--main .plan-card__note{color:rgba(237,234,227,.72);}
.plan-list li{
  display:flex;align-items:flex-start;gap:12px;
  padding:14px 0;
  border-top:1px solid var(--c-line);
  font-size:15.5px;color:var(--c-text-2);
}
.plan-list li:first-child{border-top:none;}
.plan-list li::before{
  content:"";
  flex:0 0 auto;
  width:7px;height:7px;margin-top:10px;
  border-radius:50%;
  background:var(--c-accent);
}
.plan-card--main .plan-list li{border-top-color:rgba(237,234,227,.16);color:rgba(237,234,227,.88);}
.plan-card__foot{margin-top:auto;padding-top:30px;}
.plan-card--main .plan-card__foot .btn-main{background:var(--c-accent);border-color:var(--c-accent);color:#fff;}
.plan-card--main .plan-card__foot .btn-main:hover{background:#B76A34;border-bottom-color:#EDEAE3;}

/* ---------- 资讯列表 ---------- */
.news-card{
  height:100%;
  display:flex;flex-direction:column;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.news-card__media{display:block;overflow:hidden;}
.news-card__media img{aspect-ratio:16/10;object-fit:cover;width:100%;transition:transform .4s var(--ease);}
.news-card:hover .news-card__media img{transform:scale(1.03);}
.news-card__body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1 1 auto;}
.news-card__title{font-size:18px;line-height:1.5;margin:14px 0 10px;}
.news-card__title a{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__title a:hover{color:var(--c-accent);}
.news-card__desc{
  font-size:14.5px;color:var(--c-text-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:18px;
}
.news-card__meta{
  margin-top:auto;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:16px;
  border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-muted);
}
.news-card__meta .text-link{font-size:13.5px;}
.empty-card{
  border:1px dashed var(--c-line);
  background:var(--c-surface);
  border-radius:var(--r-md);
  min-height:150px;max-height:200px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  text-align:center;padding:28px;
  color:var(--c-text-2);font-size:15px;
}

/* ---------- FAQ ---------- */
.faq-aside{position:sticky;top:104px;}
.faq-aside h2{font-size:clamp(24px,2.6vw,30px);}
.faq-aside p{margin-top:16px;font-size:15px;color:var(--c-text-2);}
.faq .accordion-item{
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  background:var(--c-surface);
  margin-bottom:12px;
  overflow:hidden;
}
.faq .accordion-button{
  position:relative;
  min-height:64px;
  padding:20px 56px 20px 24px;
  font-size:17px;font-weight:600;
  color:var(--c-text);
  background:var(--c-surface);
  box-shadow:none;
  border-radius:var(--r-md) !important;
}
.faq .accordion-button::after{
  width:16px;height:16px;background-size:16px;
  filter:invert(24%) sepia(9%) saturate(700%) hue-rotate(100deg) brightness(90%);
}
.faq .accordion-button:not(.collapsed){
  color:var(--c-primary);
  background:var(--c-surface);
  box-shadow:none;
}
.faq .accordion-button:not(.collapsed)::before{
  content:"";
  position:absolute;left:0;top:0;bottom:0;
  width:2px;background:var(--c-accent);
}
.faq .accordion-button:focus{box-shadow:none;border-color:var(--c-line);}
.faq .accordion-body{
  padding:0 24px 24px;
  font-size:15.5px;
  line-height:1.9;
  color:var(--c-text-2);
}

/* ---------- 联系表单 ---------- */
.contact-wrap{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  padding:44px;
}
.form-field{margin-bottom:22px;}
.form-field label{
  display:block;
  font-size:14px;font-weight:600;
  color:var(--c-text);margin-bottom:10px;
}
.form-field input,.form-field textarea{
  width:100%;
  min-height:48px;
  padding:12px 16px;
  font-size:15.5px;
  color:var(--c-text);
  background:var(--c-bg);
  border:1px solid var(--c-line);
  border-radius:var(--r-sm);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.form-field textarea{min-height:120px;resize:vertical;}
.form-field input:focus,.form-field textarea:focus{
  outline:none;
  background:var(--c-surface);
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(30,58,50,.14);
}
.form-hint{font-size:13px;color:var(--c-muted);margin-top:8px;}
.form-tip{
  display:none;
  margin-top:16px;
  font-size:14px;
  color:var(--c-success);
}
.form-tip.is-visible{display:block;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-primary-deep);
  color:rgba(237,234,227,.78);
  padding:76px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:44px;
  padding-bottom:56px;
}
.footer-brand .brand__mark{color:#EDEAE3;}
.footer-brand .brand__sub{color:rgba(237,234,227,.56);}
.footer-brand p{
  margin-top:20px;font-size:14px;line-height:1.9;
  color:rgba(237,234,227,.66);
}
.footer-title{
  font-size:14px;
  color:#EDEAE3;
  font-family:var(--font-sans);
  font-weight:700;
  letter-spacing:.08em;
  margin-bottom:20px;
}
.footer-list li{margin-bottom:12px;}
.footer-list a{font-size:14.5px;color:rgba(237,234,227,.72);}
.footer-list a:hover{color:var(--c-accent-soft);}
.footer-contact li{font-size:14.5px;color:rgba(237,234,227,.72);margin-bottom:12px;}
.footer-bottom{
  border-top:1px solid rgba(237,234,227,.16);
  padding:24px 0 88px;
  display:flex;flex-wrap:wrap;gap:14px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(237,234,227,.56);
}
.footer-bottom a{color:rgba(237,234,227,.72);}
.footer-bottom a:hover{color:var(--c-accent-soft);}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;
  right:28px;bottom:28px;
  z-index:1040;
  display:inline-flex;align-items:center;gap:10px;
  height:52px;padding:0 26px;
  border-radius:var(--r-pill);
  background:var(--c-primary);
  color:#F6F4EF;
  font-size:15px;font-weight:600;
  box-shadow:var(--sh-2);
  border:1px solid rgba(237,234,227,.18);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),background .2s var(--ease),visibility .3s;
}
.float-cta.is-shown{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:#182F28;color:#fff;}
.float-cta i{color:var(--c-accent-soft);font-style:normal;}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .value-row,.value-row--flip{grid-template-columns:1fr 1fr;gap:40px;}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:36px;}
  .footer-grid .footer-col--contact{grid-column:span 3;}
}
@media (max-width:991.98px){
  .container{padding-left:22px;padding-right:22px;}
  .section{padding:80px 0;}
  .section--tight{padding:64px 0;}
  .nav-links{display:none !important;}
  .nav-toggle{display:flex;}
  .hero{padding-top:56px;}
  .hero__sub{font-size:17.5px;}
  .hero__visual img{aspect-ratio:16/11;max-height:42vh;}
  .hero-index{margin-top:48px;}
  .faq-aside{position:static;margin-bottom:28px;}
  .plan-grid{grid-template-columns:1fr;}
  .proof-band{grid-template-columns:repeat(2,1fr);}
  .proof-item:nth-child(3){border-left:none;}
  .proof-item:nth-child(3),.proof-item:nth-child(4){border-top:1px solid rgba(237,234,227,.16);}
  .contact-wrap{padding:34px 26px;}
  .section-head--row{flex-direction:column;align-items:flex-start;}
}
@media (max-width:767.98px){
  body{font-size:16px;line-height:1.8;}
  .section{padding:56px 0;}
  .section--tight{padding:48px 0;}
  .topbar__notice{display:none;}
  .topbar__inner{gap:14px;}
  .hero{padding-top:44px;}
  .hero__actions{gap:12px;}
  .hero__actions .btn-main,.hero__actions .btn-ghost{width:100%;}
  .hero__badges{flex-direction:column;align-items:flex-start;gap:6px;}
  .hero__badges i{display:none;}
  .value-row,.value-row--flip{grid-template-columns:1fr;gap:22px;padding:34px 0;}
  .value-row .value-row__text,.value-row .value-row__media,
  .value-row--flip .value-row__text,.value-row--flip .value-row__media{order:initial;}
  .value-row__text{order:2 !important;}
  .value-row__media{order:1 !important;}
  .demo-track{margin:0 -22px;padding-left:22px;padding-right:22px;}
  .demo-card{flex:0 0 78%;}
  .proof-band{grid-template-columns:1fr;}
  .proof-item{border-left:none;border-top:1px solid rgba(237,234,227,.16);padding:26px 20px;}
  .proof-item:first-child{border-top:none;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:40px;}
  .footer-grid .footer-col--contact{grid-column:auto;}
  .footer-bottom{padding-bottom:104px;flex-direction:column;align-items:flex-start;}
  .float-cta{
    right:0;left:0;bottom:0;
    height:56px;border-radius:0;
    justify-content:center;
    padding:0 18px calc(env(safe-area-inset-bottom,0px));
    width:100%;
  }
  .news-card__body{padding:20px;}
}
@media (max-width:519.98px){
  .container{padding-left:18px;padding-right:18px;}
  .demo-track{margin:0 -18px;padding-left:18px;padding-right:18px;}
  .contact-wrap{padding:26px 20px;}
  .plan-card{padding:28px 22px 30px;}
  .hero__visual img{max-height:38vh;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --c-primary:#1E3A32;
  --c-primary-deep:#14261F;
  --c-accent:#C4743C;
  --c-accent-soft:#D98A4E;
  --c-muted:#7E8C86;
  --c-bg:#F6F4EF;
  --c-surface:#FFFFFF;
  --c-tint:#F0E6DA;
  --c-line:#E4E0D8;
  --c-text:#1B1D1B;
  --c-text-2:#5C615D;
  --c-ok:#2F7A5A;
  --c-warn:#B98A2B;
  --radius-s:8px;
  --radius-m:14px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(20,38,31,.06);
  --shadow-2:0 8px 24px -12px rgba(20,38,31,.18);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --nav-h:70px;
  --bs-primary:#1E3A32;
  --bs-body-color:#1B1D1B;
  --bs-border-color:#E4E0D8;
  --bs-body-font-family:var(--font-sans);
  --bs-body-bg:#F6F4EF;
  --bs-link-color:#1E3A32;
  --bs-link-hover-color:#C4743C;
  --bs-border-radius:8px;
  --bs-border-radius-lg:14px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  letter-spacing:.005em;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--c-accent);}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
ul,ol{padding-left:1.15em;margin:0;}
p{margin:0 0 1em;}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:600;color:var(--c-primary);margin:0 0 16px;letter-spacing:-.01em;}
h1{font-size:clamp(30px,4.6vw,48px);line-height:1.18;letter-spacing:-.02em;}
h2{font-size:clamp(24px,3.1vw,34px);line-height:1.28;}
h3{font-size:21px;line-height:1.4;}
.container{max-width:1180px;padding-left:24px;padding-right:24px;margin:0 auto;width:100%;}
section[id]{scroll-margin-top:96px;}
::selection{background:var(--c-tint);color:var(--c-primary-deep);}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}

/* 顶部信息条 */
.topbar{background:var(--c-primary-deep);color:#EDEAE3;font-size:13px;line-height:1;}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:38px;}
.topbar__left{white-space:nowrap;letter-spacing:.02em;color:#EDEAE3;}
.topbar__left i{color:var(--c-accent-soft);margin-right:6px;}
.topbar__mid{flex:1;max-width:480px;overflow:hidden;position:relative;height:38px;}
.topbar__mid .marquee{display:inline-flex;white-space:nowrap;animation:marquee 22s linear infinite;will-change:transform;}
.topbar__mid .marquee span{padding-right:64px;color:rgba(237,234,227,.82);}
@keyframes marquee{0%{transform:translateX(0);}100%{transform:translateX(-50%);}}
.topbar__cta{color:var(--c-accent-soft);border-bottom:1px solid transparent;padding-bottom:2px;white-space:nowrap;}
.topbar__cta:hover{color:#F0C9A5;border-bottom-color:#F0C9A5;}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:1030;background:var(--c-surface);border-bottom:1px solid var(--c-line);}
.site-nav{padding:0;background:transparent;}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h);}
.brand{display:flex;flex-direction:column;line-height:1.1;text-decoration:none;}
.brand__mark{font-family:var(--font-serif);font-size:22px;font-weight:700;color:var(--c-primary);letter-spacing:.02em;}
.brand__sub{font-size:12px;color:var(--c-muted);letter-spacing:.24em;margin-top:3px;}
.brand:hover .brand__mark{color:var(--c-accent);}
.nav-links{align-items:center;gap:4px;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  font-size:15px;
  color:var(--c-text-2);
  border-radius:var(--radius-s);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--c-accent);
  transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--c-primary);background:rgba(240,230,218,.5);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-accent);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.btn-cta{
  display:inline-flex;align-items:center;
  height:42px;padding:0 22px;margin-left:10px;
  background:var(--c-primary);color:#F6F4EF;
  font-size:15px;border-radius:var(--radius-s);
  box-shadow:var(--shadow-1);
  transition:background .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.btn-cta:hover{background:#24463C;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 10px;
  background:transparent;border:1px solid var(--c-line);border-radius:var(--radius-s);
}
.nav-toggle span{display:block;height:2px;background:var(--c-primary);border-radius:2px;}
.nav-toggle:hover{border-color:var(--c-primary);}

/* 抽屉 */
.offcanvas.nav-drawer{background:var(--c-surface);width:300px;}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--c-line);padding:18px 22px;}
.nav-drawer .offcanvas-body{padding:8px 22px 24px;}
.drawer-link{display:block;padding:16px 0;border-bottom:1px solid var(--c-line);color:var(--c-text);font-size:16px;}
.drawer-link:hover,.drawer-link.is-active{color:var(--c-accent);}
.drawer-cta{display:block;text-align:center;margin-top:22px;height:48px;line-height:48px;background:var(--c-primary);color:#F6F4EF;border-radius:var(--radius-s);}

/* 面包屑 */
.crumb-bar{background:var(--c-surface);border-bottom:1px solid var(--c-line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:13px;color:var(--c-muted);margin:0;list-style:none;}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:var(--c-line);}
.crumb a{color:var(--c-text-2);}
.crumb a:hover{color:var(--c-accent);}
.crumb .current{color:var(--c-primary);font-weight:600;}

/* 分类页头 */
.cat-hero{
  position:relative;
  background-color:var(--c-primary-deep);
  background-image:linear-gradient(120deg,rgba(20,38,31,.94),rgba(20,38,31,.72)),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  color:#EDEAE3;
  padding:76px 0 68px;
  overflow:hidden;
}
.cat-hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  border:1px solid rgba(237,234,227,.14);border-radius:50%;
}
.cat-hero__grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;position:relative;z-index:1;}
.cat-hero h1{color:#F6F4EF;margin-bottom:20px;}
.cat-hero__lead{font-size:17.5px;line-height:1.9;color:rgba(237,234,227,.86);max-width:36em;margin-bottom:24px;}
.badge-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(196,116,60,.16);
  border:1px solid rgba(217,138,78,.5);
  color:var(--c-accent-soft);
  font-size:13px;letter-spacing:.06em;
  padding:6px 14px;border-radius:var(--radius-pill);
  margin-bottom:20px;
}
.cat-hero__figure{
  border-radius:var(--radius-m);overflow:hidden;
  border:1px solid rgba(237,234,227,.18);
  box-shadow:0 24px 48px -24px rgba(0,0,0,.6);
  background:#0F1D18;
}
.cat-hero__figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.cat-hero__facts{display:flex;flex-wrap:wrap;gap:28px;margin-top:30px;padding-top:24px;border-top:1px solid rgba(237,234,227,.16);}
.cat-hero__fact b{display:block;font-family:var(--font-serif);font-size:26px;color:#F6F4EF;font-variant-numeric:tabular-nums;}
.cat-hero__fact span{font-size:13px;color:rgba(237,234,227,.66);}

/* 锚点目录条 */
.anchor-bar{background:var(--c-surface);border-bottom:1px solid var(--c-line);position:sticky;top:var(--nav-h);z-index:1020;}
.anchor-bar__inner{display:flex;gap:6px;overflow-x:auto;padding:12px 0;scrollbar-width:none;}
.anchor-bar__inner::-webkit-scrollbar{display:none;}
.anchor-bar a{
  flex:0 0 auto;padding:8px 16px;font-size:14px;color:var(--c-text-2);
  border:1px solid var(--c-line);border-radius:var(--radius-pill);
  transition:all .2s var(--ease);white-space:nowrap;
}
.anchor-bar a:hover{border-color:var(--c-primary);color:var(--c-primary);}
.anchor-bar a.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#F6F4EF;}

/* 通用板块 */
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--paper{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head p{color:var(--c-text-2);font-size:16.5px;}
.eyebrow{font-size:13px;letter-spacing:.2em;color:var(--c-muted);margin-bottom:12px;display:block;}

/* 错位图文 */
.feature-row{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center;padding:52px 0;border-top:1px solid var(--c-line);}
.feature-row:first-of-type{border-top:0;padding-top:0;}
.feature-row--reverse{grid-template-columns:7fr 5fr;}
.feature-row--reverse .feature-media{order:2;}
.feature-row--reverse .feature-body{order:1;}
.feature-media{position:relative;}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-m);border:1px solid var(--c-line);box-shadow:var(--shadow-1);}
.feature-media__num{
  position:absolute;left:-14px;top:-14px;
  font-family:var(--font-serif);font-size:15px;font-weight:700;
  background:var(--c-accent);color:#FBF7F1;
  padding:6px 12px;border-radius:var(--radius-s);
  box-shadow:var(--shadow-1);font-variant-numeric:tabular-nums;
}
.feature-body h2{margin-bottom:14px;}
.feature-body p{color:var(--c-text-2);}
.point-list{list-style:none;padding:0;margin:20px 0 0;}
.point-list li{position:relative;padding-left:26px;margin-bottom:12px;font-size:15.5px;color:var(--c-text);}
.point-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;
  background:var(--c-tint);border:2px solid var(--c-accent);border-radius:50%;
}
.point-list li b{font-weight:600;color:var(--c-primary);}

/* 编号步骤条 */
.step-band{background:var(--c-tint);border-radius:var(--radius-m);padding:28px 30px;margin-top:22px;}
.step-band ol{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 26px;}
.step-band li{display:flex;gap:12px;font-size:15px;color:var(--c-text);}
.step-band b{font-family:var(--font-serif);color:var(--c-accent);font-variant-numeric:tabular-nums;}

/* 提示卡 */
.tip-card{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--c-surface);border:1px solid var(--c-line);border-left:3px solid var(--c-accent);
  border-radius:var(--radius-m);padding:22px 24px;box-shadow:var(--shadow-1);
}
.tip-card i{color:var(--c-accent);font-size:20px;margin-top:4px;}
.tip-card p{margin:0;color:var(--c-text-2);font-size:15.5px;}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-side{position:sticky;top:150px;}
.faq-side p{color:var(--c-text-2);font-size:15.5px;}
.accordion.faq-acc{border-top:1px solid var(--c-line);}
.faq-acc .accordion-item{border:0;border-bottom:1px solid var(--c-line);background:transparent;}
.faq-acc .accordion-header{margin:0;}
.faq-acc .accordion-button{
  position:relative;
  background:transparent;box-shadow:none;
  padding:20px 48px 20px 18px;
  min-height:64px;
  font-family:var(--font-serif);font-size:17px;font-weight:600;color:var(--c-primary);
  line-height:1.5;border-radius:0;
}
.faq-acc .accordion-button::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;
  background:var(--c-accent);opacity:0;transition:opacity .2s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed){color:var(--c-accent);}
.faq-acc .accordion-button:not(.collapsed)::before{opacity:1;}
.faq-acc .accordion-button::after{
  content:"+";position:absolute;right:14px;top:50%;transform:translateY(-50%);
  background:none;width:20px;height:20px;line-height:20px;text-align:center;
  font-size:20px;color:var(--c-accent);margin:0;
}
.faq-acc .accordion-button:not(.collapsed)::after{content:"−";}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent;}
.faq-acc .accordion-body{padding:0 30px 24px 18px;font-size:15.5px;line-height:1.9;color:var(--c-text-2);}

/* 表单 */
.contact-section{
  background:var(--c-primary-deep);color:#EDEAE3;
  padding:80px 0;position:relative;overflow:hidden;
}
.contact-section::before{
  content:"";position:absolute;left:-160px;bottom:-160px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(196,116,60,.22),transparent 68%);
}
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;position:relative;z-index:1;}
.contact-grid h2{color:#F6F4EF;}
.contact-grid p{color:rgba(237,234,227,.78);}
.contact-list{list-style:none;padding:0;margin:24px 0 0;}
.contact-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:rgba(237,234,227,.8);margin-bottom:12px;}
.contact-list i{color:var(--c-accent-soft);margin-top:5px;}
.contact-form{background:rgba(246,244,239,.06);border:1px solid rgba(237,234,227,.16);border-radius:var(--radius-m);padding:30px;}
.form-field{margin-bottom:18px;}
.form-field label{display:block;font-size:13.5px;color:rgba(237,234,227,.72);margin-bottom:8px;letter-spacing:.04em;}
.form-field input,.form-field textarea{
  width:100%;height:48px;padding:0 14px;
  background:rgba(246,244,239,.96);color:var(--c-text);
  border:1px solid transparent;border-radius:var(--radius-s);
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.form-field textarea{height:118px;padding:12px 14px;resize:vertical;line-height:1.7;}
.form-field input::placeholder,.form-field textarea::placeholder{color:#9AA29C;}
.form-field input:focus,.form-field textarea:focus{
  outline:none;border-color:var(--c-accent-soft);
  box-shadow:0 0 0 3px rgba(217,138,78,.35);
}
.form-note{font-size:13px;color:rgba(237,234,227,.6);margin:12px 0 0;}
.btn-submit{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:50px;padding:0 30px;
  background:var(--c-accent);color:#FFF8F1;border:0;border-radius:var(--radius-s);
  font-size:16px;font-weight:600;cursor:pointer;
  transition:background .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-submit:hover{background:#B86A34;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-submit:active{transform:translateY(0);}

/* 页脚 */
.site-footer{background:var(--c-primary-deep);color:rgba(237,234,227,.78);padding:72px 0 0;font-size:14.5px;}
.footer-grid{display:grid;grid-template-columns:5fr 3fr 3fr 3fr;gap:44px;padding-bottom:48px;}
.site-footer .brand__mark{color:#F6F4EF;font-size:21px;}
.site-footer .brand__sub{color:rgba(237,234,227,.5);}
.footer-brand p{margin-top:18px;line-height:1.9;color:rgba(237,234,227,.66);max-width:32em;}
.footer-title{font-family:var(--font-serif);font-size:15px;color:#F6F4EF;margin:0 0 16px;letter-spacing:.04em;}
.footer-list{list-style:none;padding:0;margin:0;}
.footer-list li{margin-bottom:12px;}
.footer-list a{color:rgba(237,234,227,.72);}
.footer-list a:hover{color:var(--c-accent-soft);}
.footer-contact li{color:rgba(237,234,227,.62);line-height:1.8;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(237,234,227,.14);
  padding:22px 0 88px;
  font-size:13px;color:rgba(237,234,227,.5);
}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:1050;
  display:inline-flex;align-items:center;gap:10px;
  height:52px;padding:0 24px;
  background:var(--c-primary);color:#F6F4EF;
  border-radius:var(--radius-pill);
  font-size:15px;box-shadow:0 12px 28px -12px rgba(20,38,31,.6);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .3s var(--ease),transform .3s var(--ease),background .2s var(--ease);
}
.float-cta i{color:var(--c-accent-soft);}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{background:#24463C;color:#fff;}

/* 动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s var(--ease),transform .55s var(--ease);}
.reveal.is-in{opacity:1;transform:translateY(0);}

/* 响应式 */
@media (max-width:1199.98px){
  .cat-hero__grid{gap:36px;}
  .feature-row,.feature-row--reverse{gap:40px;}
  .faq-side{top:130px;}
}
@media (max-width:991.98px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .cat-hero__grid{grid-template-columns:1fr;gap:32px;}
  .cat-hero{padding:56px 0 52px;}
  .cat-hero__figure{max-width:560px;}
  .feature-row,.feature-row--reverse{grid-template-columns:1fr;gap:26px;padding:40px 0;}
  .feature-row--reverse .feature-media,
  .feature-row--reverse .feature-body{order:0;}
  .faq-wrap{grid-template-columns:1fr;gap:26px;}
  .faq-side{position:static;}
  .contact-grid{grid-template-columns:1fr;gap:34px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:72px 0;}
}
@media (max-width:767.98px){
  .topbar__mid{display:none;}
  .step-band ol{grid-template-columns:1fr;}
  .section{padding:56px 0;}
  .section--tight{padding:48px 0;}
}
@media (max-width:575.98px){
  .container{padding-left:18px;padding-right:18px;}
  h1{font-size:28px;}
  .cat-hero__facts{gap:18px 26px;}
  .brand__mark{font-size:20px;}
  .footer-grid{grid-template-columns:1fr;}
  .contact-form{padding:22px;}
  .anchor-bar{top:64px;}
  .float-cta{
    right:0;left:0;bottom:0;width:100%;
    height:56px;border-radius:0;justify-content:center;
    padding:0 18px calc(0px + env(safe-area-inset-bottom));
    opacity:1;transform:none;pointer-events:auto;
    box-shadow:0 -6px 20px -10px rgba(20,38,31,.5);
  }
  .footer-bottom{padding-bottom:96px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
  .topbar__mid .marquee{animation:none;transform:none;}
}

/* roulang page: article */
:root{
  --c-primary:#1E3A32;
  --c-primary-deep:#14261F;
  --c-accent:#C4743C;
  --c-accent-soft:#D98A4E;
  --c-muted:#7E8C86;
  --c-bg:#F6F4EF;
  --c-surface:#FFFFFF;
  --c-tint:#F0E6DA;
  --c-line:#E4E0D8;
  --c-text:#1B1D1B;
  --c-text-2:#5C615D;
  --c-ok:#2F7A5A;
  --c-warn:#B98A2B;
  --r-sm:8px;
  --r-md:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,38,31,.06);
  --sh-2:0 8px 24px -12px rgba(20,38,31,.18);
  --ease:cubic-bezier(.2,.7,.2,1);
  --nav-h:72px;
  --bs-primary:#1E3A32;
  --bs-body-color:#1B1D1B;
  --bs-body-bg:#F6F4EF;
  --bs-border-color:#E4E0D8;
  --bs-link-color:#1E3A32;
  --bs-link-hover-color:#C4743C;
  --bs-border-radius:#8px;
  --bs-border-radius-lg:#14px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--c-accent)}
button{font:inherit;color:inherit}
h1,h2,h3,h4{font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;font-weight:600;letter-spacing:-.01em;margin:0;color:var(--c-text)}
h1{font-size:clamp(30px,4.2vw,48px);line-height:1.2}
h2{font-size:clamp(26px,3.2vw,36px);line-height:1.28}
h3{font-size:20px;line-height:1.45}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(196,116,60,.22)}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}

.container{
  width:100%;
  max-width:1180px;
  margin-left:auto;
  margin-right:auto;
  padding-left:24px;
  padding-right:24px;
}
.section{padding:104px 0}
.section--tight{padding:72px 0}
.section-head{margin-bottom:44px;max-width:760px}
.section-head h2{margin-bottom:16px}
.section-head p{color:var(--c-text-2);font-size:16.5px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.12em;color:var(--c-muted);
  margin-bottom:14px;text-transform:none;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-accent);display:inline-block}

/* ===== 顶部信息条 ===== */
.site-header{background:var(--c-surface);z-index:1035}
.site-topbar{background:var(--c-primary-deep);color:#EDEAE3;font-size:13px;line-height:1}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:38px}
.topbar-brand{color:#FFFFFF;letter-spacing:.08em;white-space:nowrap}
.topbar-notice{flex:1;max-width:480px;overflow:hidden;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);}
.topbar-notice span{display:inline-block;white-space:nowrap;color:#C9C3B7;animation:topbar-marquee 24s linear infinite}
@keyframes topbar-marquee{0%{transform:translateX(38%)}100%{transform:translateX(-102%)}}
.topbar-link{color:var(--c-accent-soft);white-space:nowrap;border-bottom:1px solid transparent}
.topbar-link:hover{color:#FFFFFF;border-bottom-color:var(--c-accent-soft)}

/* ===== 主导航 ===== */
.site-nav{
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  min-height:var(--nav-h);
  padding:0;
  flex-wrap:nowrap;
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:var(--nav-h)}
.brand{display:flex;flex-direction:column;line-height:1.15;gap:2px}
.brand__mark{font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;font-size:21px;font-weight:600;color:var(--c-primary);letter-spacing:.04em}
.brand__sub{font-size:11.5px;letter-spacing:.22em;color:var(--c-muted)}
.brand:hover .brand__mark{color:var(--c-accent)}
.site-nav .nav-links{align-items:center;gap:26px}
.site-nav .nav-link{
  position:relative;
  padding:6px 0;
  font-size:15px;
  color:var(--c-text-2);
  background:transparent;
}
.site-nav .nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--c-accent);transition:width .25s var(--ease);
}
.site-nav .nav-link:hover{color:var(--c-primary)}
.site-nav .nav-link:hover::after{width:100%}
.site-nav .nav-link.is-active{color:var(--c-accent)}
.site-nav .nav-link.is-active::after{width:100%}
.btn-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 22px;
  background:var(--c-primary);color:#F6F4EF;
  border-radius:var(--r-sm);font-size:15px;border:0;
  transition:background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease);
}
.btn-cta:hover{background:#182F28;color:#FFFFFF;box-shadow:inset 0 -2px 0 var(--c-accent)}
.nav-toggle{
  display:none;width:46px;height:46px;border:1px solid var(--c-line);border-radius:var(--r-sm);
  background:var(--c-surface);padding:0;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:1.6px;background:var(--c-primary);border-radius:2px}
.nav-drawer{background:var(--c-surface);border-right:1px solid var(--c-line);width:320px;max-width:88vw}
.drawer-head{border-bottom:1px solid var(--c-line);padding:20px 22px}
.drawer-title{font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;font-size:18px;color:var(--c-primary)}
.drawer-close{opacity:.6}
.drawer-body{padding:8px 22px 24px;display:flex;flex-direction:column}
.drawer-link{padding:16px 0;border-bottom:1px solid var(--c-line);font-size:16px;color:var(--c-text-2)}
.drawer-link.is-active{color:var(--c-accent)}
.drawer-link:hover{color:var(--c-primary)}
.drawer-cta{margin-top:22px;width:100%;height:50px}

/* ===== 面包屑 ===== */
.breadcrumb-bar{
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  padding:13px 0;
  font-size:13.5px;
  color:var(--c-muted);
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;padding:0;margin:0}
.crumb li{display:flex;align-items:center;gap:8px;min-width:0}
.crumb a{color:var(--c-text-2)}
.crumb a:hover{color:var(--c-accent);text-decoration:underline;text-underline-offset:3px}
.crumb-sep{color:var(--c-line)}
.crumb-current{color:var(--c-muted);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.crumb li:last-child .crumb-current{color:var(--c-text-2)}

/* ===== 文章头部 ===== */
.article-hero{padding:56px 0 40px;background:var(--c-surface);border-bottom:1px solid var(--c-line)}
.article-hero .hero-inner{max-width:820px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--c-tint);color:#8A5A2E;
  border-radius:var(--r-pill);
  font-size:13px;padding:5px 13px;line-height:1.6;
}
.article-title{margin:18px 0 20px}
.meta-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:13px;color:var(--c-muted);letter-spacing:.02em}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--c-line);display:inline-block}

/* ===== 文章布局 ===== */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,760px) 260px;
  gap:56px;
  justify-content:center;
  align-items:start;
  padding:64px 0 8px;
}
.article-main{min-width:0}
.article-body{font-size:17px;line-height:1.9;color:var(--c-text);word-break:break-word}
.article-body > * + *{margin-top:1em}
.article-body h2{
  font-size:clamp(22px,2.5vw,28px);
  margin-top:2.2em;
  scroll-margin-top:110px;
}
.article-body h2::before{
  content:"";display:block;width:36px;height:3px;border-radius:2px;
  background:var(--c-accent);margin-bottom:14px;
}
.article-body h3{font-size:20px;margin-top:1.9em;scroll-margin-top:110px}
.article-body h4{font-size:17.5px;font-family:inherit;font-weight:600;margin-top:1.5em}
.article-body ul,.article-body ol{padding-left:1.3em;list-style:revert}
.article-body li{margin:.55em 0}
.article-body a{color:var(--c-accent);text-decoration:underline;text-underline-offset:3px}
.article-body blockquote{
  margin:1.7em 0;padding:18px 24px;
  background:var(--c-tint);
  border-left:3px solid var(--c-accent);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--c-text-2);font-size:16px;
}
.article-body blockquote > * + *{margin-top:.6em}
.article-body img{border-radius:var(--r-md);width:100%;aspect-ratio:16/10;object-fit:cover;margin:1.7em 0}
.article-body figure{margin:1.7em 0}
.article-body figcaption{font-size:13px;color:var(--c-muted);margin-top:10px;text-align:center}
.article-body table{width:100%;border-collapse:collapse;font-size:15.5px;display:block;overflow-x:auto}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:11px 14px;text-align:left}
.article-body th{background:var(--c-tint);font-weight:600;white-space:nowrap}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:2.2em 0}
.article-body code{background:var(--c-tint);padding:2px 6px;border-radius:4px;font-size:14.5px}

/* 侧栏目录 */
.article-side{position:sticky;top:110px}
.toc-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  padding:24px 22px;
}
.toc-title{font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;font-size:16px;color:var(--c-primary);margin-bottom:14px}
.toc-list{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--c-line);padding-left:0}
.toc-item a{
  display:block;padding:7px 0 7px 14px;font-size:14px;color:var(--c-text-2);
  border-left:2px solid transparent;margin-left:-1px;line-height:1.6;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.toc-item a:hover{color:var(--c-primary)}
.toc-item a.is-active{color:var(--c-accent);border-left-color:var(--c-accent)}
.toc-item--sub a{padding-left:26px;font-size:13.5px;color:var(--c-muted)}
.toc-empty{font-size:13.5px;color:var(--c-muted)}
.toc-cta{
  display:inline-flex;align-items:center;gap:6px;margin-top:18px;
  font-size:14px;color:var(--c-primary);
}
.toc-cta::after{content:"→";transition:transform .2s var(--ease)}
.toc-cta:hover{color:var(--c-accent)}
.toc-cta:hover::after{transform:translateX(3px)}

/* 标签行 */
.tag-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:52px;padding-top:26px;border-top:1px solid var(--c-line);
}
.tag-label{font-size:13px;color:var(--c-muted);margin-right:4px}
.tag{
  display:inline-flex;align-items:center;
  padding:5px 13px;border:1px solid var(--c-line);border-radius:var(--r-pill);
  font-size:13px;color:var(--c-text-2);background:var(--c-surface);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.tag:hover{border-color:var(--c-accent);color:var(--c-accent)}

/* 空态 */
.empty-state{
  border:1px dashed var(--c-line);
  background:var(--c-surface);
  border-radius:var(--r-md);
  padding:32px 28px;
  max-width:560px;
}
.empty-title{font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;font-size:20px;color:var(--c-primary);margin-bottom:10px}
.empty-desc{font-size:15.5px;color:var(--c-text-2);margin-bottom:20px}

/* 按钮 */
.btn-primary-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 28px;
  background:var(--c-primary);color:#F6F4EF;border:0;border-radius:var(--r-sm);
  font-size:15.5px;
  transition:background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease);
}
.btn-primary-c:hover{background:#182F28;color:#FFFFFF;box-shadow:inset 0 -2px 0 var(--c-accent)}
.btn-ghost-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;
  background:transparent;color:var(--c-primary);
  border:1px solid var(--c-primary);border-radius:var(--r-sm);
  font-size:15.5px;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.btn-ghost-c:hover{background:var(--c-primary);color:#F6F4EF}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;color:var(--c-primary);padding:4px 0;
  border-bottom:1px solid transparent;
}
.btn-text::after{content:"→";transition:transform .2s var(--ease)}
.btn-text:hover{color:var(--c-accent);border-bottom-color:var(--c-accent)}
.btn-text:hover::after{transform:translateX(4px)}

/* 相关推荐 */
.related{padding:88px 0 24px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.news-card{
  display:flex;flex-direction:column;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D8D3C8}
.news-card__media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--c-tint)}
.news-card__media img{width:100%;height:100%;object-fit:cover}
.news-card__body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-card__title{font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;font-size:19px;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__desc{font-size:15px;color:var(--c-text-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--c-muted);
}
.news-card__link{color:var(--c-primary);font-size:13.5px}
.news-card__link:hover{color:var(--c-accent)}

/* 底部 CTA 带 */
.cta-band{
  background:var(--c-primary-deep);
  color:#EDEAE3;
  border-radius:var(--r-md);
  padding:48px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.16;pointer-events:none;
}
.cta-band__text{position:relative;z-index:1;max-width:600px}
.cta-band__text h2{color:#F3F0E9;font-size:clamp(22px,2.6vw,30px);margin-bottom:12px}
.cta-band__text p{color:#BFC7C1;font-size:15.5px}
.cta-band__actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:14px}
.cta-band .btn-primary-c{background:var(--c-accent);color:#FFFFFF}
.cta-band .btn-primary-c:hover{background:#B06534;box-shadow:inset 0 -2px 0 #F3F0E9}
.cta-band .btn-ghost-c{border-color:rgba(237,234,227,.5);color:#EDEAE3}
.cta-band .btn-ghost-c:hover{background:#EDEAE3;color:var(--c-primary-deep)}

/* 返回入口 */
.back-links{
  display:flex;flex-wrap:wrap;gap:26px;align-items:center;
  margin-top:56px;padding-top:26px;border-top:1px solid var(--c-line);
}

/* 页脚 */
.site-footer{background:var(--c-primary-deep);color:#EDEAE3;padding:76px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand__mark{color:#FFFFFF}
.footer-brand .brand__sub{color:#9AA6A0}
.footer-brand p{font-size:14.5px;color:#AEB8B2;max-width:32ch;line-height:1.85}
.footer-title{font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;font-size:15px;color:#FFFFFF;margin-bottom:16px}
.footer-list li{margin-bottom:10px;font-size:14.5px}
.footer-list a{color:#AEB8B2}
.footer-list a:hover{color:var(--c-accent-soft)}
.footer-contact li{color:#AEB8B2;line-height:1.7}
.footer-bottom{
  border-top:1px solid rgba(237,234,227,.14);
  padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:#93A099;
}
.site-footer, .footer-list a, .footer-contact li{font-variant-numeric:tabular-nums}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:28px;bottom:34px;z-index:1045;
  display:inline-flex;align-items:center;gap:10px;
  background:var(--c-primary);color:#F6F4EF;
  border:0;border-radius:var(--r-pill);
  padding:14px 24px;font-size:15px;
  box-shadow:var(--sh-2);cursor:pointer;
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .3s var(--ease),transform .3s var(--ease),background .2s var(--ease);
}
.float-cta.is-visible{opacity:1;transform:none;pointer-events:auto}
.float-cta:hover{background:var(--c-accent);color:#FFFFFF}
.float-cta svg{width:16px;height:16px}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ===== 响应式 ===== */
@media (min-width:992px){
  .site-header{position:sticky;top:0;box-shadow:0 1px 0 rgba(20,38,31,.04)}
}
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px;padding-top:52px}
  .article-side{position:static;order:2}
  .toc-list{max-height:none}
}
@media (max-width:991px){
  .section{padding:80px 0}
  .related{padding:64px 0 16px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 30px}
  .article-hero{padding:40px 0 32px}
}
@media (max-width:767px){
  .nav-toggle{display:flex}
  .site-nav .nav-links{display:none}
  .topbar-notice{display:none}
  .article-layout{padding-top:40px}
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;
    justify-content:center;padding:17px 18px calc(17px + env(safe-area-inset-bottom));
    opacity:1;transform:none;pointer-events:auto;
    box-shadow:0 -8px 20px -14px rgba(20,38,31,.55);
  }
  body{padding-bottom:76px}
  .site-footer{margin-top:72px}
}
@media (max-width:575px){
  .container{padding-left:18px;padding-right:18px}
  .section{padding:56px 0}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .article-body{font-size:16.5px}
  .cta-band{padding:32px 22px;border-radius:var(--r-sm)}
  .back-links{gap:18px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --c-primary:#1E3A32;
  --c-primary-deep:#14261F;
  --c-accent:#C4743C;
  --c-accent-soft:#D98A4E;
  --c-muted:#7E8C86;
  --c-bg:#F6F4EF;
  --c-surface:#FFFFFF;
  --c-tint:#F0E6DA;
  --c-line:#E4E0D8;
  --c-text:#1B1D1B;
  --c-text-2:#5C615D;
  --c-success:#2F7A5A;
  --c-warn:#B98A2B;
  --r-sm:8px;
  --r-md:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,38,31,.06);
  --sh-2:0 8px 24px -12px rgba(20,38,31,.18);
  --ease:cubic-bezier(.2,.7,.2,1);
  --container:1180px;
  --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --bs-primary:#1E3A32;
  --bs-body-color:#1B1D1B;
  --bs-body-bg:#F6F4EF;
  --bs-border-color:#E4E0D8;
  --bs-link-color:#1E3A32;
  --bs-link-hover-color:#C4743C;
  --bs-border-radius:8px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  padding-bottom:0;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--c-accent)}
button,input,textarea,select{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--c-primary);margin:0;font-weight:700;letter-spacing:-0.01em}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container{max-width:var(--container);padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto}
.num{font-variant-numeric:tabular-nums}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--c-primary-deep);color:#EDEAE3;font-size:13px}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px}
.topbar__brand{display:flex;align-items:center;gap:8px;letter-spacing:.02em;white-space:nowrap}
.topbar__brand i{color:var(--c-accent-soft)}
.topbar__notice{flex:1;max-width:480px;overflow:hidden;position:relative;height:20px;color:#CFCBC2}
.topbar__track{position:absolute;white-space:nowrap;animation:marquee 22s linear infinite}
@keyframes marquee{0%{transform:translateX(0)}100%{transform:translateX(-55%)}}
.topbar__action{color:#EDEAE3;border-bottom:1px solid rgba(237,234,227,.4);white-space:nowrap}
.topbar__action:hover{color:var(--c-accent-soft);border-color:var(--c-accent-soft)}
@media (max-width:767.98px){.topbar__notice{display:none}}

/* ---------- 主导航 ---------- */
.site-header{background:var(--c-surface);border-bottom:1px solid var(--c-line);position:sticky;top:0;z-index:1030}
.site-nav{padding:0;background:var(--c-surface)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;min-height:70px;gap:20px}
.brand{display:flex;flex-direction:column;line-height:1.15}
.brand__mark{font-family:var(--font-serif);font-size:22px;font-weight:700;color:var(--c-primary);letter-spacing:.02em}
.brand__sub{font-size:12px;color:var(--c-muted);letter-spacing:.16em}
.nav-links{align-items:center;gap:4px}
.nav-link{position:relative;padding:24px 12px;font-size:15px;color:var(--c-text-2);white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:12px;right:12px;bottom:16px;height:2px;background:var(--c-accent);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease)}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-accent);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.btn-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 22px;margin-left:14px;
  background:var(--c-primary);color:#F6F4EF;border-radius:var(--r-sm);
  font-size:15px;border:1px solid var(--c-primary);
  transition:background .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-cta:hover{background:#172C26;color:#F6F4EF;box-shadow:var(--sh-2)}
.nav-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:46px;height:44px;padding:0 12px;background:transparent;
  border:1px solid var(--c-line);border-radius:var(--r-sm);cursor:pointer;
}
.nav-toggle span{display:block;height:2px;background:var(--c-primary);border-radius:2px}
.nav-toggle:hover{border-color:var(--c-primary)}
@media (min-width:992px){.nav-toggle{display:none}}
@media (max-width:991.98px){.nav-inner{min-height:64px}.brand__mark{font-size:20px}}

/* ---------- 移动抽屉 ---------- */
.nav-drawer{width:300px;background:var(--c-surface);border-right:1px solid var(--c-line)}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--c-line);padding:18px 20px}
.nav-drawer .offcanvas-body{padding:0 0 24px}
.drawer-link{display:block;padding:16px 20px;border-bottom:1px solid var(--c-line);color:var(--c-text);font-size:16px}
.drawer-link:hover{background:var(--c-tint);color:var(--c-primary)}
.drawer-link.is-active{color:var(--c-accent);font-weight:600;box-shadow:inset 3px 0 0 var(--c-accent)}
.drawer-cta{margin:20px;display:block;text-align:center;height:50px;line-height:50px;background:var(--c-primary);color:#F6F4EF;border-radius:var(--r-sm)}
.drawer-cta:hover{background:#172C26;color:#F6F4EF}
.btn-close:focus{box-shadow:none}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-text-2);padding:14px 0;border-bottom:1px solid var(--c-line)}
.crumb a{color:var(--c-text-2)}
.crumb a:hover{color:var(--c-accent)}
.crumb .sep{color:var(--c-muted)}
.crumb .current{color:var(--c-primary)}

/* ---------- 分类页头 ---------- */
.page-hero{position:relative;background:var(--c-surface);border-bottom:1px solid var(--c-line);overflow:hidden}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.10;
}
.page-hero__inner{position:relative;padding:56px 24px 52px;max-width:880px;margin:0 auto}
.hero__badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--c-tint);color:#8A5730;font-size:13px;letter-spacing:.04em;
}
.hero__badge i{font-size:12px}
.page-hero h1{
  font-size:clamp(30px,4.6vw,46px);line-height:1.22;margin:20px 0 0;letter-spacing:-0.02em;
}
.page-hero .lead{
  font-size:17px;color:var(--c-text-2);line-height:1.9;margin:18px 0 0;max-width:760px;
}
.hero__meta{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px;font-size:14px;color:var(--c-text-2)}
.hero__meta span{display:inline-flex;align-items:center;gap:8px}
.hero__meta i{color:var(--c-accent)}

/* ---------- 锚点目录条 ---------- */
.anchor-bar{background:var(--c-surface);border-bottom:1px solid var(--c-line);position:sticky;top:70px;z-index:1020}
.anchor-bar__inner{display:flex;gap:6px;overflow-x:auto;padding:10px 24px;scrollbar-width:none}
.anchor-bar__inner::-webkit-scrollbar{display:none}
.anchor-link{
  flex:0 0 auto;padding:8px 16px;border-radius:var(--r-pill);border:1px solid var(--c-line);
  font-size:14px;color:var(--c-text-2);white-space:nowrap;transition:all .2s var(--ease);
}
.anchor-link:hover{border-color:var(--c-primary);color:var(--c-primary)}
.anchor-link.is-current{background:var(--c-primary);border-color:var(--c-primary);color:#F6F4EF}
@media (max-width:991.98px){.anchor-bar{top:64px}}

/* ---------- 通用区块 ---------- */
.section{padding:104px 0;scroll-margin-top:130px}
.section--tint{background:var(--c-tint)}
.section--paper{background:var(--c-surface)}
.section--dark{background:var(--c-primary-deep);color:#EDEAE3}
.section--dark h2,.section--dark h3{color:#F6F4EF}
.section-head{max-width:720px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.14em;
  color:var(--c-accent);text-transform:none;margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--c-accent);display:block}
h2.h2{font-size:clamp(26px,3.2vw,36px);line-height:1.3}
.section-head p{margin-top:16px;color:var(--c-text-2);font-size:16.5px;line-height:1.9}
.section--dark .section-head p{color:#C9C5BC}
@media (max-width:991.98px){.section{padding:80px 0}}
@media (max-width:575.98px){.section{padding:56px 0}.container{padding-left:18px;padding-right:18px}}

/* ---------- 模块清单（双列：条目 + sticky 摘要） ---------- */
.module-grid{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:48px;align-items:start}
.mod-item{
  display:grid;grid-template-columns:64px minmax(0,1fr);gap:20px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:26px 28px;box-shadow:var(--sh-1);margin-bottom:18px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.mod-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D5CFC3}
.mod-item__no{
  font-family:var(--font-serif);font-size:26px;color:var(--c-accent);line-height:1.1;
  border-right:1px solid var(--c-line);padding-right:16px;
}
.mod-item h3{font-size:21px;margin-bottom:10px}
.mod-item p{color:var(--c-text-2);font-size:16px;margin-bottom:12px}
.mod-item ul{display:grid;gap:8px}
.mod-item ul li{position:relative;padding-left:20px;font-size:15px;color:var(--c-text-2)}
.mod-item ul li::before{content:"";position:absolute;left:2px;top:11px;width:6px;height:6px;border-radius:50%;background:var(--c-accent)}
.side-card{
  position:sticky;top:150px;
  background:var(--c-primary);color:#EDEAE3;border-radius:var(--r-md);
  padding:28px;box-shadow:var(--sh-2);
}
.side-card h3{color:#F6F4EF;font-size:20px;margin-bottom:8px}
.side-card .side-sub{font-size:14px;color:#BDB9B0;margin-bottom:20px}
.side-card .side-list li{display:flex;gap:10px;padding:11px 0;border-bottom:1px solid rgba(237,234,227,.14);font-size:15px}
.side-card .side-list li i{color:var(--c-accent-soft);margin-top:5px}
.side-card .side-list li:last-child{border-bottom:0}
.side-btn{
  display:block;text-align:center;margin-top:22px;height:48px;line-height:48px;
  background:var(--c-accent);color:#FFF6EE;border-radius:var(--r-sm);font-size:15px;
}
.side-btn:hover{background:#B06530;color:#FFF6EE}
@media (max-width:1199.98px){.module-grid{grid-template-columns:minmax(0,1fr) 300px;gap:32px}}
@media (max-width:991.98px){
  .module-grid{grid-template-columns:1fr}
  .side-card{position:static}
}
@media (max-width:575.98px){
  .mod-item{grid-template-columns:1fr;padding:22px}
  .mod-item__no{border-right:0;border-bottom:1px solid var(--c-line);padding:0 0 10px}
}

/* ---------- 步骤流程 ---------- */
.step-track{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.step{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--sh-1);position:relative;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.step:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.step__no{
  font-family:var(--font-serif);font-size:15px;color:var(--c-accent);letter-spacing:.1em;
  display:block;margin-bottom:12px;
}
.step h3{font-size:19px;margin-bottom:10px}
.step p{font-size:15px;color:var(--c-text-2);margin:0}
@media (max-width:991.98px){.step-track{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:575.98px){.step-track{grid-template-columns:1fr}}

/* ---------- 横向滚动场景带 ---------- */
.scene-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:14px;margin:0 -4px;
}
.scene-track::-webkit-scrollbar{height:6px}
.scene-track::-webkit-scrollbar-thumb{background:#CFC9BD;border-radius:999px}
.scene-card{
  flex:0 0 300px;scroll-snap-align:start;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.scene-card__media{aspect-ratio:16/10;overflow:hidden;background:var(--c-tint)}
.scene-card__media img{width:100%;height:100%;object-fit:cover}
.scene-card__body{padding:22px 24px 24px}
.scene-card__tag{
  display:inline-block;font-size:12px;padding:4px 10px;border-radius:var(--r-pill);
  background:var(--c-tint);color:#8A5730;margin-bottom:12px;
}
.scene-card h3{font-size:18px;margin-bottom:8px}
.scene-card p{font-size:15px;color:var(--c-text-2);margin:0}
@media (max-width:575.98px){.scene-card{flex:0 0 84%}}

/* ---------- 深色数据带 ---------- */
.proof-band{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin-top:36px}
.proof-item{padding:8px 28px;border-left:1px solid rgba(237,234,227,.18)}
.proof-item:first-child{border-left:0;padding-left:0}
.proof-item .num{font-family:var(--font-serif);font-size:clamp(40px,4.4vw,54px);color:#F6F4EF;line-height:1.05}
.proof-item .num small{font-size:20px;color:var(--c-accent-soft);margin-left:6px}
.proof-item p{font-size:13.5px;color:#B8B4AB;margin:12px 0 0}
.proof-quote{
  margin-top:44px;padding:24px 28px;border-left:3px solid var(--c-accent);
  background:rgba(246,244,239,.06);border-radius:0 var(--r-md) var(--r-md) 0;
  font-size:16px;color:#DDD9D0;line-height:1.9;
}
.proof-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.proof-badges span{
  font-size:13px;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(237,234,227,.25);color:#CFCBC2;
}
@media (max-width:767.98px){
  .proof-band{grid-template-columns:1fr}
  .proof-item{border-left:0;border-top:1px solid rgba(237,234,227,.18);padding:22px 0}
  .proof-item:first-child{border-top:0;padding-top:0}
}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-intro{position:sticky;top:150px}
.faq-intro p{color:var(--c-text-2);margin-top:14px;font-size:16px}
.faq-intro .mini-link{display:inline-flex;align-items:center;gap:8px;margin-top:18px;font-size:15px}
.faq-intro .mini-link i{font-size:12px;transition:transform .2s var(--ease)}
.faq-intro .mini-link:hover i{transform:translateX(4px)}
.accordion-item{border:1px solid var(--c-line);border-radius:var(--r-md) !important;margin-bottom:12px;overflow:hidden;background:var(--c-surface);box-shadow:var(--sh-1)}
.accordion-button{
  font-family:var(--font-serif);font-size:17px;color:var(--c-primary);
  background:var(--c-surface);padding:20px 24px;min-height:64px;
  box-shadow:none !important;position:relative;
}
.accordion-button:not(.collapsed){background:var(--c-tint);color:var(--c-primary)}
.accordion-button:not(.collapsed)::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-accent)}
.accordion-button::after{
  width:18px;height:18px;background-size:18px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%231E3A32'%3E%3Cpath d='M8 1.5a.75.75 0 0 1 .75.75v5h5a.75.75 0 0 1 0 1.5h-5v5a.75.75 0 0 1-1.5 0v-5h-5a.75.75 0 0 1 0-1.5h5v-5A.75.75 0 0 1 8 1.5z'/%3E%3C/svg%3E");
}
.accordion-button:not(.collapsed)::after{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23C4743C'%3E%3Cpath d='M2 7.25h12a.75.75 0 0 1 0 1.5H2a.75.75 0 0 1 0-1.5z'/%3E%3C/svg%3E")}
.accordion-body{padding:4px 24px 24px;font-size:15.5px;color:var(--c-text-2);line-height:1.9;background:var(--c-surface)}
@media (max-width:991.98px){
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .faq-intro{position:static}
}

/* ---------- 表单 ---------- */
.contact-wrap{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.contact-copy h2{font-size:clamp(26px,3.2vw,34px)}
.contact-copy p{color:var(--c-text-2);margin-top:16px}
.contact-points{margin-top:24px;display:grid;gap:12px}
.contact-points li{display:flex;gap:10px;font-size:15px;color:var(--c-text-2)}
.contact-points i{color:var(--c-accent);margin-top:5px}
.form-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);padding:30px;box-shadow:var(--sh-1)}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;margin-bottom:8px;color:var(--c-text)}
.field input,.field textarea{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--c-line);border-radius:var(--r-sm);
  background:#FCFBF8;color:var(--c-text);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:120px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(30,58,50,.14);
}
.field .hint{font-size:12.5px;color:var(--c-muted);margin-top:6px}
.btn-primary2{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  width:100%;height:50px;background:var(--c-primary);color:#F6F4EF;border:0;
  border-radius:var(--r-sm);font-size:16px;cursor:pointer;
  transition:background .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary2:hover{background:#172C26;box-shadow:var(--sh-2)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border:1px solid var(--c-primary);color:var(--c-primary);
  background:transparent;border-radius:var(--r-sm);font-size:15px;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.btn-ghost:hover{background:var(--c-primary);color:#F6F4EF}
.form-note{font-size:13px;color:var(--c-muted);margin-top:14px;margin-bottom:0}
@media (max-width:991.98px){.contact-wrap{grid-template-columns:1fr;gap:32px}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-deep);color:#C9C5BC;padding:72px 0 0;font-size:15px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand__mark{color:#F6F4EF}
.footer-brand .brand__sub{color:#8E9A93}
.footer-brand p{margin-top:16px;font-size:14.5px;line-height:1.9;color:#A9A59C;max-width:320px}
.footer-title{font-family:var(--font-serif);color:#F6F4EF;font-size:16px;margin-bottom:16px}
.footer-list li{margin-bottom:11px}
.footer-list a{color:#C9C5BC;font-size:14.5px}
.footer-list a:hover{color:var(--c-accent-soft)}
.footer-contact li{color:#A9A59C;font-size:14.5px}
.footer-bottom{
  margin-top:56px;padding:20px 0 26px;border-top:1px solid rgba(237,234,227,.14);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13.5px;color:#8E9A93;
}
@media (max-width:991.98px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:575.98px){
  .site-footer{padding-top:56px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .site-footer{padding-bottom:64px}
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:1040;
  display:inline-flex;align-items:center;gap:10px;height:52px;padding:0 24px;
  background:var(--c-primary);color:#F6F4EF;border-radius:var(--r-pill);
  box-shadow:var(--sh-2);font-size:15px;
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s var(--ease),background .2s var(--ease);
}
.float-cta.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{background:#172C26;color:#F6F4EF}
.float-cta i{color:var(--c-accent-soft)}
@media (max-width:767.98px){
  .float-cta{
    right:0;left:0;bottom:0;width:100%;height:56px;border-radius:0;
    justify-content:center;padding-bottom:env(safe-area-inset-bottom);
    opacity:1;visibility:visible;transform:none;
  }
}

/* ---------- 进入视口动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --c-primary:#1E3A32;
  --c-primary-deep:#14261F;
  --c-accent:#C4743C;
  --c-accent-lite:#D98A4E;
  --c-muted:#7E8C86;
  --c-bg:#F6F4EF;
  --c-surface:#FFFFFF;
  --c-tint:#F0E6DA;
  --c-line:#E4E0D8;
  --c-text:#1B1D1B;
  --c-text-2:#5C615D;
  --c-success:#2F7A5A;
  --c-warn:#B98A2B;
  --r-sm:8px;
  --r-md:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,38,31,.06);
  --sh-2:0 8px 24px -12px rgba(20,38,31,.18);
  --ease:cubic-bezier(.2,.7,.2,1);
  --nav-h:70px;
  --bs-primary:#1E3A32;
  --bs-body-color:#1B1D1B;
  --bs-border-color:#E4E0D8;
  --bs-link-color:#1E3A32;
  --bs-link-hover-color:#C4743C;
  --bs-body-bg:#F6F4EF;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.serif{
  font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  color:var(--c-text);
  letter-spacing:-0.01em;
  line-height:1.3;
  margin:0 0 16px;
  font-weight:700;
}
h1{font-size:clamp(32px,4.6vw,52px);line-height:1.18;letter-spacing:-0.02em}
h2{font-size:clamp(25px,3.1vw,35px)}
h3{font-size:20px}
p{margin:0 0 1em}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--c-accent)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button,input,textarea{font-family:inherit;font-size:inherit}
.tnum{font-variant-numeric:tabular-nums}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:2px;
}
.container{width:100%;max-width:1180px!important;margin:0 auto;padding-left:24px;padding-right:24px}
@media (max-width:575.98px){.container{padding-left:18px;padding-right:18px}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--c-line);
  backdrop-filter:saturate(180%) blur(8px);
}
.nav-inner{
  height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:inline-flex;flex-direction:column;line-height:1.15;text-decoration:none}
.brand__mark{
  font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  font-size:21px;font-weight:700;color:var(--c-primary);letter-spacing:.02em;
}
.brand__sub{
  font-size:12.5px;color:var(--c-muted);letter-spacing:.14em;margin-top:2px;
}
.brand:hover .brand__mark{color:var(--c-accent)}
.nav-links{align-items:center;gap:6px}
.nav-link{
  position:relative;
  display:inline-block;
  font-size:15px;color:var(--c-text-2);
  padding:10px 2px;margin:0 12px;
  text-decoration:none;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:4px;height:2px;
  background:var(--c-accent);transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-accent);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.btn-cta{
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary);color:#F6F4EF;
  height:44px;padding:0 22px;margin-left:10px;
  border-radius:var(--r-sm);font-size:15px;font-weight:600;
  box-shadow:var(--sh-1);transition:all .2s var(--ease);
  border-bottom:2px solid transparent;
}
.btn-cta:hover{background:#172C26;color:#fff;border-bottom-color:var(--c-accent);transform:translateY(-1px)}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-sm);
  background:var(--c-surface);cursor:pointer;padding:0 11px;
}
.nav-toggle span{display:block;height:2px;background:var(--c-primary);border-radius:2px}
.nav-drawer{background:var(--c-bg);width:min(340px,86vw)}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--c-line);padding:18px 20px}
.nav-drawer .offcanvas-body{padding:12px 20px 24px;display:flex;flex-direction:column}
.drawer-link{
  display:block;padding:16px 2px;color:var(--c-text);
  border-bottom:1px solid var(--c-line);font-size:16px;text-decoration:none;
}
.drawer-link:hover{color:var(--c-accent)}
.drawer-link.is-active{color:var(--c-accent);font-weight:600}
.drawer-cta{
  margin-top:24px;display:flex;align-items:center;justify-content:center;
  height:50px;border-radius:var(--r-sm);background:var(--c-primary);color:#F6F4EF;
  font-weight:600;
}
.drawer-cta:hover{background:#172C26;color:#fff}
@media (max-width:991.98px){
  .nav-toggle{display:flex}
}

/* ============ 分类页头 ============ */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--c-primary-deep);
  color:#EDEAE3;
  padding:92px 0 68px;
}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  opacity:.26;
}
.page-hero .container{position:relative;z-index:2;max-width:1180px}
.page-hero h1{color:#fff;max-width:20ch;margin-top:18px;margin-bottom:20px}
.page-hero__lead{
  color:rgba(237,234,227,.82);
  font-size:17px;line-height:1.9;max-width:64ch;margin-bottom:0;
}
.crumb{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13.5px;color:rgba(237,234,227,.7);
  padding:7px 14px;border:1px solid rgba(237,234,227,.24);border-radius:var(--r-pill);
}
.crumb a{color:rgba(237,234,227,.86)}
.crumb a:hover{color:var(--c-accent-lite)}
.crumb__sep{opacity:.5}
.tag{
  display:inline-block;
  background:var(--c-tint);color:var(--c-primary);
  font-size:13px;font-weight:600;letter-spacing:.04em;
  padding:5px 14px;border-radius:var(--r-pill);
}
.page-hero .tag{background:rgba(217,138,78,.18);color:var(--c-accent-lite)}
@media (max-width:767.98px){
  .page-hero{padding:64px 0 48px}
  .page-hero__lead{font-size:16px}
}

/* ============ 锚点目录条 ============ */
.anchor-bar{
  position:sticky;top:var(--nav-h);z-index:1020;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
}
.anchor-bar__inner{
  display:flex;gap:8px;align-items:center;
  height:56px;overflow-x:auto;scrollbar-width:none;
}
.anchor-bar__inner::-webkit-scrollbar{display:none}
.anchor-link{
  flex:0 0 auto;
  font-size:14.5px;color:var(--c-text-2);
  padding:8px 14px;border-radius:var(--r-pill);
  border:1px solid transparent;white-space:nowrap;
}
.anchor-link:hover{color:var(--c-primary);background:var(--c-tint)}
.anchor-link.is-current{color:var(--c-accent);border-color:rgba(196,116,60,.4);background:rgba(196,116,60,.07)}

/* ============ 通用区块 ============ */
.section{padding:96px 0}
.section--tight{padding:80px 0}
.section--tint{background:var(--c-bg)}
.section--white{background:var(--c-surface)}
.section-head{max-width:720px;margin-bottom:44px}
.section-head p{color:var(--c-text-2);margin-bottom:0;font-size:16.5px}
.eyebrow{
  font-size:13px;letter-spacing:.16em;color:var(--c-accent);
  font-weight:600;margin-bottom:10px;display:block;
}
@media (max-width:991.98px){.section{padding:76px 0}.section--tight{padding:64px 0}}
@media (max-width:767.98px){.section{padding:56px 0}.section--tight{padding:52px 0}.section-head{margin-bottom:32px}}

/* ============ 对比双栏 ============ */
.cmp__grid{
  display:grid;grid-template-columns:1fr 1fr;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.cmp__col{padding:36px 34px 40px}
.cmp__col+.cmp__col{border-left:1px solid var(--c-line);background:#FBF9F5}
.cmp__col-title{
  display:flex;align-items:center;gap:12px;
  font-size:19px;font-weight:700;color:var(--c-primary);
  margin-bottom:8px;
}
.cmp__col-title .cmp__num{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:50%;
  background:var(--c-primary);color:#F6F4EF;
  font-size:13.5px;font-weight:700;font-variant-numeric:tabular-nums;
}
.cmp__col+.cmp__col .cmp__num{background:var(--c-accent)}
.cmp__col-note{font-size:14px;color:var(--c-muted);margin:0 0 22px}
.check-list li{
  position:relative;padding-left:30px;margin-bottom:16px;
  color:var(--c-text-2);font-size:16px;line-height:1.75;
}
.check-list li:last-child{margin-bottom:0}
.check-list li::before{
  content:"✓";position:absolute;left:2px;top:0;
  color:var(--c-accent);font-weight:700;font-size:15px;
}
@media (max-width:767.98px){
  .cmp__grid{grid-template-columns:1fr}
  .cmp__col{padding:28px 22px 30px}
  .cmp__col+.cmp__col{border-left:0;border-top:1px solid var(--c-line)}
}

/* ============ 步骤 + 配图 ============ */
.step-layout{
  display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:start;
}
.step-item{
  display:grid;grid-template-columns:56px 1fr;gap:18px;
  padding:24px 0;border-bottom:1px solid var(--c-line);
}
.step-item:first-child{padding-top:0}
.step-item:last-child{border-bottom:0;padding-bottom:0}
.step-item__num{
  font-family:"Noto Serif SC","Source Han Serif SC",serif;
  font-size:26px;font-weight:700;color:var(--c-accent);
  line-height:1.2;font-variant-numeric:tabular-nums;
}
.step-item h3{font-size:19px;margin-bottom:8px}
.step-item p{color:var(--c-text-2);font-size:16px;margin-bottom:0}
.media-card{
  border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--c-line);background:var(--c-surface);
  box-shadow:var(--sh-1);
}
.media-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.media-card__cap{
  padding:16px 20px;font-size:13.5px;color:var(--c-muted);line-height:1.7;
}
.step-aside{
  position:sticky;top:calc(var(--nav-h) + 76px);
  display:grid;gap:20px;
}
@media (max-width:1199.98px){
  .step-layout{grid-template-columns:1fr;gap:36px}
  .step-aside{position:static}
}
@media (max-width:575.98px){
  .step-item{grid-template-columns:40px 1fr;gap:14px}
  .step-item__num{font-size:21px}
}

/* ============ 场景卡（一主两副） ============ */
.scene-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:24px}
.scene-side{display:grid;gap:24px}
.card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
  height:100%;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.card__body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.card__badge{
  align-self:flex-start;
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
  color:var(--c-primary);background:var(--c-tint);
  padding:4px 12px;border-radius:var(--r-pill);
}
.card h3{font-size:19px;margin:0}
.card p{color:var(--c-text-2);font-size:15.5px;margin:0}
.card__meta{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-muted);
}
@media (max-width:991.98px){
  .scene-grid{grid-template-columns:1fr}
}
@media (max-width:575.98px){
  .card__body{padding:20px}
}

/* ============ 要点横带 ============ */
.point-strip{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:1px;background:var(--c-line);
  border:1px solid var(--c-line);border-radius:var(--r-md);
  overflow:hidden;
}
.point-strip__item{
  background:var(--c-surface);padding:26px 24px;
}
.point-strip__item i{color:var(--c-accent);font-size:18px;margin-bottom:12px;display:block}
.point-strip__item h3{font-size:17px;margin-bottom:8px}
.point-strip__item p{font-size:15px;color:var(--c-text-2);margin:0}
@media (max-width:767.98px){
  .point-strip{grid-template-columns:1fr}
}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-side{position:sticky;top:calc(var(--nav-h) + 76px)}
.faq-side p{color:var(--c-text-2);font-size:15.5px;margin-bottom:0}
.faq-accordion .accordion-item{
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  background:var(--c-surface);
  margin-bottom:14px;
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.faq-accordion .accordion-button{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  width:100%;min-height:64px;
  padding:18px 22px 18px 26px;
  font-size:17px;font-weight:600;color:var(--c-text);
  background:var(--c-surface);
  border:0;box-shadow:none;
  position:relative;
  text-align:left;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.faq-accordion .accordion-button::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;
  background:var(--c-accent);transform:scaleY(0);transform-origin:top;
  transition:transform .2s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--c-primary);background:#FBF9F5}
.faq-accordion .accordion-button:not(.collapsed)::before{transform:scaleY(1)}
.faq-accordion .accordion-button::after{
  content:"+";background-image:none;
  width:auto;height:auto;line-height:1;
  font-size:22px;font-weight:400;color:var(--c-accent);
  transform:none;transition:transform .2s var(--ease);
  margin:0;flex:0 0 auto;
}
.faq-accordion .accordion-button:not(.collapsed)::after{content:"−"}
.faq-accordion .accordion-button:focus{box-shadow:none}
.faq-accordion .accordion-body{
  padding:0 26px 24px;font-size:15.5px;line-height:1.9;color:var(--c-text-2);
}
@media (max-width:1199.98px){
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-side{position:static}
}

/* ============ 表单 / CTA ============ */
.contact-wrap{
  display:grid;grid-template-columns:5fr 7fr;gap:48px;
  background:var(--c-primary-deep);color:#EDEAE3;
  border-radius:var(--r-md);
  padding:56px 52px;
  position:relative;overflow:hidden;
}
.contact-wrap::after{
  content:"";position:absolute;right:-60px;bottom:-80px;width:320px;height:320px;
  border-radius:50%;background:rgba(196,116,60,.14);
}
.contact-info{position:relative;z-index:2}
.contact-info h2{color:#fff;margin-bottom:14px}
.contact-info p{color:rgba(237,234,227,.78);font-size:16px}
.contact-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:rgba(237,234,227,.82);margin-bottom:14px;
}
.contact-list i{color:var(--c-accent-lite);margin-top:6px;font-size:14px}
.contact-form{
  position:relative;z-index:2;
  background:var(--c-surface);
  border-radius:var(--r-md);
  padding:30px 30px 26px;
  box-shadow:var(--sh-2);
}
.form-field{margin-bottom:18px}
.form-field label{
  display:block;font-size:14px;font-weight:600;color:var(--c-text);
  margin-bottom:8px;
}
.form-control-c{
  width:100%;height:48px;padding:0 14px;
  border:1px solid var(--c-line);border-radius:var(--r-sm);
  background:#fff;color:var(--c-text);font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
textarea.form-control-c{height:auto;min-height:104px;padding:12px 14px;line-height:1.7;resize:vertical}
.form-control-c::placeholder{color:#9AA39E}
.form-control-c:focus{
  outline:none;border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(30,58,50,.14);
}
.form-hint{font-size:13px;color:var(--c-muted);margin-top:10px}
.form-msg{font-size:13.5px;margin-top:10px;color:var(--c-success);display:none}
.form-msg.is-show{display:block}
.btn-solid{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 28px;
  background:var(--c-primary);color:#F6F4EF;
  border:0;border-radius:var(--r-sm);
  font-size:15.5px;font-weight:600;cursor:pointer;
  border-bottom:2px solid transparent;
  transition:all .2s var(--ease);
}
.btn-solid:hover{background:#172C26;color:#fff;border-bottom-color:var(--c-accent)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;
  background:transparent;color:var(--c-primary);
  border:1px solid var(--c-primary);border-radius:var(--r-sm);
  font-size:15.5px;font-weight:600;
  transition:all .2s var(--ease);
}
.btn-ghost:hover{background:var(--c-primary);color:#F6F4EF}
.contact-form .btn-solid{width:100%;margin-top:4px}
@media (max-width:1199.98px){
  .contact-wrap{grid-template-columns:1fr;gap:36px;padding:44px 36px}
}
@media (max-width:575.98px){
  .contact-wrap{padding:32px 20px;border-radius:var(--r-md)}
  .contact-form{padding:22px 18px}
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-primary-deep);
  color:#EDEAE3;
  padding:72px 0 26px;
  margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand__mark{color:#fff;font-size:20px}
.footer-brand .brand__sub{color:rgba(237,234,227,.6)}
.footer-brand p{
  margin-top:16px;color:rgba(237,234,227,.72);font-size:14.5px;line-height:1.85;max-width:34ch;
}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin:0 0 16px}
.footer-list li{margin-bottom:11px}
.footer-list a{color:rgba(237,234,227,.72);font-size:14.5px}
.footer-list a:hover{color:var(--c-accent-lite)}
.footer-contact li{color:rgba(237,234,227,.7);font-size:14.5px;line-height:1.8}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid rgba(237,234,227,.16);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:13px;color:rgba(237,234,227,.6);
}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:span 2}
  .site-footer{padding-bottom:calc(84px + env(safe-area-inset-bottom))}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-brand{grid-column:span 1}
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:26px;bottom:30px;z-index:1040;
  display:inline-flex;align-items:center;gap:10px;
  height:52px;padding:0 24px;
  background:var(--c-primary);color:#F6F4EF;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:600;
  box-shadow:var(--sh-2);
  opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),background .2s var(--ease);
}
.float-cta i{color:var(--c-accent-lite);font-size:14px}
.float-cta:hover{background:#172C26;color:#fff}
.float-cta.is-show{opacity:1;pointer-events:auto;transform:translateY(0)}
@media (max-width:991.98px){
  .float-cta{
    left:0;right:0;bottom:0;height:56px;padding:0 18px;
    border-radius:0;justify-content:center;
    padding-bottom:env(safe-area-inset-bottom);
    opacity:1;pointer-events:auto;transform:none;
  }
  .float-cta:hover{transform:none}
}

/* ============ 进入视口动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.reveal-stagger > *:nth-child(1){transition-delay:0ms}
.reveal-stagger > *:nth-child(2){transition-delay:60ms}
.reveal-stagger > *:nth-child(3){transition-delay:120ms}
.reveal-stagger > *:nth-child(4){transition-delay:180ms}
.reveal-stagger > *:nth-child(5){transition-delay:240ms}

section[id],div[id]{scroll-margin-top:calc(var(--nav-h) + 70px)}

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

/* roulang page: category4 */
:root{
  --c-primary:#1E3A32;
  --c-primary-deep:#14261F;
  --c-accent:#C4743C;
  --c-accent-light:#D98A4E;
  --c-muted:#7E8C86;
  --c-bg:#F6F4EF;
  --c-surface:#FFFFFF;
  --c-tint:#F0E6DA;
  --c-line:#E4E0D8;
  --c-text:#1B1D1B;
  --c-text-2:#5C615D;
  --c-success:#2F7A5A;
  --c-warn:#B98A2B;
  --r-sm:8px;
  --r-md:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,38,31,.06);
  --sh-2:0 8px 24px -12px rgba(20,38,31,.18);
  --ease:cubic-bezier(.2,.7,.2,1);
  --nav-h:70px;

  --bs-primary:#1E3A32;
  --bs-primary-rgb:30,58,50;
  --bs-body-color:#1B1D1B;
  --bs-body-bg:#F6F4EF;
  --bs-border-color:#E4E0D8;
  --bs-link-color:#1E3A32;
  --bs-link-hover-color:#C4743C;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-border-radius:8px;
  --bs-border-radius-lg:14px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16.5px;
  line-height:1.88;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease)}
a:hover{color:var(--c-accent)}
button,input,textarea,select{font:inherit;color:inherit}
p{margin:0 0 1em}
section[id],div[id]{scroll-margin-top:112px}

h1,h2,h3,h4{
  font-family:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  color:var(--c-primary-deep);
  font-weight:700;
  letter-spacing:-.01em;
}
h1{font-size:clamp(32px,5vw,54px);line-height:1.16;margin:0 0 20px}
h2{font-size:clamp(25px,3.1vw,35px);line-height:1.28;margin:0 0 18px}
h3{font-size:21px;line-height:1.4;margin:0 0 12px}
h4{font-size:18px;line-height:1.45;margin:0 0 10px}
.num{font-variant-numeric:tabular-nums}

.container{max-width:1180px;padding-left:24px;padding-right:24px}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:2000;
  background:var(--c-primary);color:#EDEAE3;padding:10px 18px;border-radius:0 0 var(--r-sm) 0;
}
.skip-link:focus{left:0}

/* ============ 顶部信息条 ============ */
.topbar{
  background:var(--c-primary-deep);
  color:#CFD8D3;
  font-size:13px;
  line-height:1.6;
}
.topbar__inner{
  min-height:38px;
  display:flex;align-items:center;gap:24px;
  padding-top:6px;padding-bottom:6px;
}
.topbar__brand{white-space:nowrap;color:#EDEAE3;letter-spacing:.02em}
.topbar__notice{
  flex:1;min-width:0;max-width:480px;overflow:hidden;
  position:relative;
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
}
.topbar__track{
  display:inline-flex;gap:48px;white-space:nowrap;
  animation:topScroll 26s linear infinite;
}
.topbar__track span{color:#B9C4BE}
@keyframes topScroll{
  0%{transform:translateX(0)}
  100%{transform:translateX(-50%)}
}
.topbar__action{
  margin-left:auto;color:#E0A87A;white-space:nowrap;
  border-bottom:1px solid rgba(224,168,122,.45);
}
.topbar__action:hover{color:#fff;border-bottom-color:#fff}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--c-line);
}
.site-nav{padding:0;background:transparent}
.site-nav .nav-inner{
  height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.brand{display:flex;flex-direction:column;line-height:1.1;text-decoration:none}
.brand__mark{
  font-family:"Noto Serif SC","Songti SC",serif;
  font-size:23px;font-weight:700;color:var(--c-primary-deep);letter-spacing:.06em;
}
.brand__sub{
  margin-top:3px;font-size:11.5px;letter-spacing:.22em;color:var(--c-muted);
}
.brand:hover .brand__mark{color:var(--c-primary)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:15px;color:var(--c-text-2);
  border-radius:var(--r-sm);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--c-accent);transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--c-primary);background:rgba(30,58,50,.04)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.btn-cta{
  margin-left:10px;
  display:inline-flex;align-items:center;justify-content:center;
  height:42px;padding:0 22px;
  background:var(--c-primary);color:#F3F1EA;
  border-radius:var(--r-sm);font-size:15px;
  transition:background .2s var(--ease),box-shadow .2s var(--ease);
  box-shadow:var(--sh-1);
}
.btn-cta:hover{background:var(--c-primary-deep);color:#fff;box-shadow:var(--sh-2)}
.nav-toggle{
  display:none;width:44px;height:44px;
  border:1px solid var(--c-line);border-radius:var(--r-sm);
  background:var(--c-surface);padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:19px;height:1.6px;background:var(--c-primary);border-radius:2px}

/* Offcanvas 抽屉 */
.nav-drawer{
  --bs-offcanvas-width:min(86vw,340px);
  background:var(--c-bg);
  border-right:1px solid var(--c-line);
}
.nav-drawer .offcanvas-header{
  border-bottom:1px solid var(--c-line);
  padding:18px 20px;
}
.nav-drawer .offcanvas-body{padding:0}
.drawer-list{list-style:none;margin:0;padding:0}
.drawer-list li{border-bottom:1px solid var(--c-line)}
.drawer-list a{
  display:block;padding:16px 20px;font-size:16px;color:var(--c-text);
}
.drawer-list a.is-active{color:var(--c-accent);font-weight:600;box-shadow:inset 3px 0 0 var(--c-accent)}
.drawer-list a:hover{background:rgba(30,58,50,.04)}
.drawer-cta-wrap{padding:20px}
.drawer-cta{
  display:flex;align-items:center;justify-content:center;
  width:100%;height:50px;background:var(--c-primary);color:#F3F1EA;
  border-radius:var(--r-sm);
}
.drawer-cta:hover{background:var(--c-primary-deep);color:#fff}

/* ============ 通用组件 ============ */
.btn-main,.btn-ghost,.btn-text{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-sm);font-size:16px;
  transition:background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn-main{
  height:52px;padding:0 28px;
  background:var(--c-primary);color:#F3F1EA;
  box-shadow:var(--sh-1);border:1px solid var(--c-primary);
}
.btn-main:hover{background:var(--c-primary-deep);color:#fff;box-shadow:var(--sh-2)}
.btn-ghost{
  height:52px;padding:0 26px;
  background:transparent;color:var(--c-primary);
  border:1px solid var(--c-primary);
}
.btn-ghost:hover{background:rgba(30,58,50,.06);color:var(--c-primary-deep)}
.btn-text{
  height:44px;padding:0 4px;color:var(--c-primary);
  border-bottom:1px solid transparent;
}
.btn-text::before{content:"→";color:var(--c-accent);font-size:15px}
.btn-text:hover{color:var(--c-accent)}
.btn-main:focus-visible,.btn-ghost:focus-visible,.btn-cta:focus-visible,.btn-text:focus-visible,
.nav-link:focus-visible,a:focus-visible,button:focus-visible{
  outline:2px solid var(--c-primary);outline-offset:2px;
}
.badge-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:var(--r-pill);
  background:var(--c-tint);color:#8A5A2E;
  font-size:13px;letter-spacing:.04em;
}
.kicker{
  display:inline-block;margin-bottom:12px;
  font-size:13px;letter-spacing:.18em;color:var(--c-muted);
}
.section{padding:104px 0}
.section--alt{background:linear-gradient(180deg,#FBFAF7 0%,#F3F1EB 100%);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{max-width:720px;margin-bottom:52px}
.section-head p{color:var(--c-text-2);font-size:16.5px;margin:0}
.lead{font-size:19px;line-height:1.8;color:var(--c-text-2)}

/* ============ 分类页头 ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:56px 0 72px;
  background:var(--c-bg);
  border-bottom:1px solid var(--c-line);
}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center right;
  opacity:.14;
  pointer-events:none;
}
.page-hero__bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(246,244,239,.96) 0%,rgba(246,244,239,.72) 48%,rgba(20,38,31,.18) 100%);
}
.page-hero .container{position:relative;z-index:1}
.crumb{
  display:inline-flex;align-items:center;gap:10px;
  padding:8px 16px;margin-bottom:26px;
  background:rgba(255,255,255,.75);
  border:1px solid var(--c-line);border-radius:var(--r-pill);
  font-size:13px;color:var(--c-text-2);
}
.crumb a{color:var(--c-text-2)}
.crumb a:hover{color:var(--c-accent)}
.crumb__sep{color:var(--c-muted)}
.crumb__current{color:var(--c-primary);font-weight:600}
.page-hero__grid{
  display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:center;
}
.page-hero h1{margin-bottom:20px}
.page-hero__meta{
  display:flex;flex-wrap:wrap;gap:10px 26px;margin:22px 0 30px;
  font-size:13.5px;color:var(--c-muted);
}
.page-hero__meta span{display:inline-flex;align-items:center;gap:8px}
.page-hero__meta i{display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--c-accent)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.page-hero__media{
  margin:0;border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--c-line);background:var(--c-surface);
  box-shadow:var(--sh-2);
}
.page-hero__media img{width:100%;aspect-ratio:4/3;object-fit:cover}

/* ============ 锚点目录条 ============ */
.anchor-bar{
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
}
.anchor-bar__inner{
  display:flex;align-items:center;gap:8px;
  overflow-x:auto;padding:12px 0;
  scrollbar-width:none;
}
.anchor-bar__inner::-webkit-scrollbar{display:none}
.anchor-bar__label{
  flex:0 0 auto;font-size:13px;color:var(--c-muted);
  padding-right:12px;margin-right:6px;border-right:1px solid var(--c-line);
}
.anchor-bar a{
  flex:0 0 auto;
  padding:7px 16px;border-radius:var(--r-pill);
  font-size:14px;color:var(--c-text-2);
  border:1px solid transparent;
  transition:all .2s var(--ease);
}
.anchor-bar a:hover{color:var(--c-primary);background:var(--c-tint)}
.anchor-bar a.is-current{color:var(--c-accent);border-color:rgba(196,116,60,.4);background:rgba(240,230,218,.6)}

/* ============ 时间线 ============ */
.timeline{position:relative;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:27px;top:12px;bottom:18px;width:1px;
  background:linear-gradient(180deg,var(--c-line) 0%,var(--c-line) 85%,transparent 100%);
}
.tl-item{
  position:relative;
  padding:0 0 40px 84px;
}
.tl-item:last-child{padding-bottom:0}
.tl-item__dot{
  position:absolute;left:0;top:0;
  width:56px;height:56px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  font-family:"Noto Serif SC",serif;
  font-size:16px;color:var(--c-primary);
  font-variant-numeric:tabular-nums;
  box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.tl-item:hover .tl-item__dot{transform:translateY(-2px);box-shadow:var(--sh-2)}
.tl-item--accent .tl-item__dot{
  background:var(--c-primary);border-color:var(--c-primary);color:#EDEAE3;
}
.tl-item__body{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  padding:26px 28px;
  box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.tl-item__body:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.tl-item__body h3{margin-bottom:10px}
.tl-item__body p{color:var(--c-text-2);margin-bottom:16px}
.tl-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.tl-list li{
  position:relative;padding-left:20px;
  font-size:15.5px;color:var(--c-text-2);line-height:1.8;
}
.tl-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:8px;height:8px;border-radius:50%;
  border:1px solid var(--c-accent);
}
.tl-list strong{color:var(--c-primary);font-weight:600}

/* ============ 自查区 ============ */
.media-frame{
  margin:26px 0;border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--c-line);box-shadow:var(--sh-1);
  background:var(--c-surface);
}
.media-frame img{width:100%;aspect-ratio:16/10;object-fit:cover}
.num-list{list-style:none;counter-reset:nl;margin:0;padding:0;display:grid;gap:18px}
.num-list li{
  counter-increment:nl;position:relative;
  padding-left:56px;
}
.num-list li::before{
  content:counter(nl,decimal-leading-zero);
  position:absolute;left:0;top:2px;
  font-family:"Noto Serif SC",serif;font-size:17px;
  color:var(--c-accent);font-variant-numeric:tabular-nums;
  border-bottom:1px solid rgba(196,116,60,.4);padding-bottom:2px;
}
.num-list h4{margin-bottom:6px}
.num-list p{margin:0;color:var(--c-text-2);font-size:15.5px}
.sticky-card{
  position:sticky;top:calc(var(--nav-h) + 28px);
  background:var(--c-primary);
  color:#EDEAE3;
  border-radius:var(--r-md);
  padding:30px 28px;
  box-shadow:var(--sh-2);
}
.sticky-card h3{color:#F6F4EF;font-size:22px;margin-bottom:14px}
.sticky-card p{color:#C7D0CB;font-size:15.5px;margin-bottom:20px}
.sticky-card ul{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.sticky-card li{
  position:relative;padding-left:22px;
  font-size:15px;color:#E4E1DA;line-height:1.75;
}
.sticky-card li::before{
  content:"·";position:absolute;left:4px;top:-2px;
  color:var(--c-accent-light);font-size:22px;line-height:1;
}
.sticky-card .btn-ghost{
  margin-top:24px;width:100%;
  border-color:rgba(237,234,227,.5);color:#EDEAE3;height:46px;
}
.sticky-card .btn-ghost:hover{background:rgba(255,255,255,.08);color:#fff}

/* ============ 渠道卡 ============ */
.channel-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:24px}
.channel-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  padding:28px;
  box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.channel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.channel-card h3{font-size:20px;margin-bottom:10px}
.channel-card p{color:var(--c-text-2);font-size:15.5px;margin:0 0 14px}
.channel-card--main{
  background:var(--c-primary-deep);
  border-color:var(--c-primary-deep);
}
.channel-card--main h3{color:#F6F4EF}
.channel-card--main p{color:#C7D0CB}
.channel-card--main .badge-tag{background:rgba(217,138,78,.18);color:#E5A878}
.channel-card--main .btn-text{color:#EDEAE3}
.channel-card--main .btn-text:hover{color:var(--c-accent-light)}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-side{position:sticky;top:calc(var(--nav-h) + 28px)}
.faq-side p{color:var(--c-text-2);margin:0}
.accordion{--bs-accordion-border-color:var(--c-line);--bs-accordion-border-radius:0}
.accordion-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md) !important;
  margin-bottom:14px;
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.accordion-button{
  position:relative;
  width:100%;min-height:64px;padding:20px 56px 20px 24px;
  background:var(--c-surface);
  color:var(--c-primary-deep);
  font-size:17px;font-weight:600;
  font-family:var(--bs-font-sans-serif);
  box-shadow:none !important;
  border-radius:0 !important;
}
.accordion-button::after{
  background-image:none;
  content:"+";
  position:absolute;right:22px;top:50%;transform:translateY(-50%);
  width:22px;height:22px;line-height:20px;text-align:center;
  font-size:20px;color:var(--c-accent);
  transition:transform .2s var(--ease);
}
.accordion-button:not(.collapsed){color:var(--c-primary);background:rgba(240,230,218,.45)}
.accordion-button:not(.collapsed)::after{content:"−";transform:translateY(-50%) rotate(180deg)}
.accordion-button:not(.collapsed)::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:2px;background:var(--c-accent);
}
.accordion-button:hover{background:rgba(240,230,218,.35)}
.accordion-body{
  padding:4px 24px 24px;
  color:var(--c-text-2);font-size:15.5px;line-height:1.9;
}
.accordion-body p:last-child{margin-bottom:0}

/* ============ 表单 ============ */
.form-wrap{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  padding:40px;
  box-shadow:var(--sh-1);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.field{display:flex;flex-direction:column;gap:8px}
.field--full{grid-column:1 / -1}
.field label{font-size:14px;color:var(--c-text-2)}
.field input,.field textarea{
  width:100%;
  background:#FCFBF8;
  border:1px solid var(--c-line);
  border-radius:var(--r-sm);
  padding:12px 16px;
  font-size:15.5px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field input{height:48px}
.field textarea{min-height:132px;resize:vertical;line-height:1.8}
.field input:focus,.field textarea:focus{
  outline:none;background:#fff;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(30,58,50,.14);
}
.field input::placeholder,.field textarea::placeholder{color:#A9B0AC}
.form-hint{font-size:13px;color:var(--c-muted)}
.form-alert{
  display:none;margin-top:16px;font-size:14px;color:var(--c-warn);
}
.form-alert.is-show{display:block}
.form-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-primary-deep);
  color:#C7D0CB;
  padding:76px 0 34px;
  margin-top:0;
}
.site-footer .brand__mark{color:#F6F4EF}
.site-footer .brand__sub{color:#8FA098}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.2fr;
  gap:44px;
}
.footer-brand p{margin:20px 0 0;font-size:15px;color:#A9B4AE;max-width:320px}
.footer-title{
  font-size:15px;color:#F0EDE6;margin:0 0 18px;
  font-family:"Noto Serif SC",serif;letter-spacing:.04em;
}
.footer-list{list-style:none;margin:0;padding:0;display:grid;gap:11px}
.footer-list a{color:#B6C0BA;font-size:14.5px}
.footer-list a:hover{color:var(--c-accent-light)}
.footer-contact li{color:#A9B4AE;font-size:14.5px;line-height:1.7}
.footer-bottom{
  margin-top:52px;padding-top:24px;
  border-top:1px solid rgba(237,234,227,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:#8FA098;
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:1040;
  display:inline-flex;align-items:center;gap:10px;
  height:54px;padding:0 24px;
  background:var(--c-primary);color:#F3F1EA;
  border-radius:var(--r-pill);
  box-shadow:var(--sh-2);
  font-size:15px;
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .3s var(--ease),transform .3s var(--ease),background .2s var(--ease);
}
.float-cta:hover{background:var(--c-primary-deep);color:#fff}
.float-cta.is-visible{opacity:1;transform:none;pointer-events:auto}
.float-cta svg{width:18px;height:18px;flex:0 0 auto}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

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

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .container{max-width:100%}
  .page-hero__grid{gap:40px}
  .faq-layout{gap:36px}
}
@media (max-width:991.98px){
  .section{padding:80px 0}
  .topbar__notice{display:none}
  .nav-links{display:none !important}
  .nav-toggle{display:flex}
  .page-hero{padding:40px 0 56px}
  .page-hero__grid{grid-template-columns:1fr;gap:32px}
  .page-hero__media img{aspect-ratio:16/10}
  .faq-layout{grid-template-columns:1fr;gap:24px}
  .faq-side{position:static}
  .channel-grid{grid-template-columns:1fr 1fr}
  .channel-card--main{grid-column:1 / -1}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .footer-brand{grid-column:1 / -1}
  .form-wrap{padding:30px}
}
@media (max-width:767.98px){
  .section{padding:64px 0}
  .container{padding-left:18px;padding-right:18px}
  .page-hero h1{font-size:clamp(28px,7.4vw,38px)}
  .lead{font-size:17px}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%}
  .tl-item{padding-left:66px}
  .tl-item__dot{width:44px;height:44px;font-size:14px}
  .timeline::before{left:21.5px}
  .tl-item__body{padding:22px}
  .form-grid{grid-template-columns:1fr}
  .channel-grid{grid-template-columns:1fr}
  .anchor-bar__label{display:none}
  .float-cta{
    left:0;right:0;bottom:0;height:56px;
    border-radius:0;justify-content:center;
    padding:0 18px calc(env(safe-area-inset-bottom,0px));
    opacity:1;transform:none;pointer-events:auto;
  }
  .site-footer{padding-bottom:96px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:575.98px){
  body{font-size:16px}
  .btn-main,.btn-ghost{height:50px;padding:0 20px;font-size:15.5px}
  .form-wrap{padding:22px}
  .sticky-card{padding:24px 22px}
}