/* roulang page: index */
:root{
  --green:#16423C;
  --green-deep:#0E2E29;
  --mist:#6B7F79;
  --paper:#F7F6F2;
  --white:#FFFFFF;
  --line:#E4E6E1;
  --line-soft:#EEF0EB;
  --dawn:#E07A3F;
  --dawn-deep:#C9662E;
  --gold:#C9A24A;
  --ink:#14181A;
  --graphite:#3C4548;
  --gray:#7A8380;
  --danger:#C0392B;
  --font-sans:"Noto Sans SC","思源黑体","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC",Georgia,"Times New Roman",serif;
  --r-card:16px;
  --r-block:20px;
  --r-btn:999px;
  --r-btn-alt:10px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(20,24,26,.04);
  --shadow-2:0 12px 32px -12px rgba(20,24,26,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:180ms;
  --dur-slow:220ms;
  --w:1200px;
}
@media (min-width:1440px){:root{--w:1280px;}}

*,*::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:16px;
  line-height:1.8;
  color:var(--graphite);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:none;cursor:pointer;}
:focus-visible{outline:2px solid var(--dawn);outline-offset:2px;}
section[id],div[id]{scroll-margin-top:84px;}

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

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:var(--paper);
  border-bottom:1px solid transparent;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{
  background:var(--white);
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-1);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:60px;}
@media (min-width:1024px){.header-inner{height:72px;}}
.logo{display:flex;align-items:center;gap:10px;min-width:0;}
.logo-mark{
  flex:none;width:28px;height:28px;border:2px solid var(--green);border-radius:7px;
  display:grid;place-items:center;color:var(--green);
}
.logo-mark svg{width:14px;height:14px;}
.logo-text{
  font-size:15px;line-height:1.2;font-weight:700;color:var(--green);
  letter-spacing:-.01em;max-width:118px;
}
@media (min-width:1024px){.logo-text{font-size:17px;max-width:none;white-space:nowrap;}}
.nav-main{display:none;}
@media (min-width:1024px){
  .nav-main{display:flex;align-items:center;gap:4px;}
}
.nav-link{
  position:relative;display:inline-block;padding:10px 14px;font-size:15px;color:var(--graphite);
  border-radius:8px;transition:color var(--dur) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:1px;background:var(--green);
  transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease);
}
.nav-link:hover{color:var(--green);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--green);font-weight:500;}
.header-actions{display:flex;align-items:center;gap:10px;}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:10px;color:var(--green);
  border:1px solid var(--line);background:var(--white);
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.menu-toggle:hover{background:var(--line-soft);}
.menu-toggle svg{width:20px;height:20px;}
@media (min-width:1024px){.menu-toggle{display:none;}}

/* ---------- 移动端抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,24,26,.42);z-index:125;
  opacity:0;visibility:hidden;transition:opacity var(--dur-slow) var(--ease),visibility var(--dur-slow) var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);background:var(--white);z-index:130;
  transform:translateX(102%);transition:transform var(--dur-slow) var(--ease);
  box-shadow:-12px 0 40px -20px rgba(20,24,26,.35);
  padding:20px 20px calc(28px + env(safe-area-inset-bottom));
  overflow-y:auto;display:flex;flex-direction:column;gap:6px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;padding-bottom:14px;border-bottom:1px solid var(--line);}
.drawer-head strong{font-size:15px;color:var(--green);}
.drawer-close{
  width:40px;height:40px;border-radius:10px;display:grid;place-items:center;
  color:var(--mist);border:1px solid var(--line);transition:background var(--dur) var(--ease);
}
.drawer-close:hover{background:var(--line-soft);}
.drawer-close svg{width:16px;height:16px;}
.drawer a.d-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 4px;font-size:16px;color:var(--graphite);border-bottom:1px solid var(--line-soft);
  transition:color var(--dur) var(--ease);
}
.drawer a.d-link:hover,.drawer a.d-link.is-active{color:var(--green);font-weight:500;}
.drawer a.d-link span{font-size:12px;color:var(--gray);letter-spacing:.08em;}
.drawer-foot{margin-top:22px;display:flex;flex-direction:column;gap:10px;}
.drawer-foot p{font-size:13px;color:var(--gray);line-height:1.7;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;line-height:1;text-align:center;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),
             transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.btn-primary{background:var(--dawn);color:#fff;border:1px solid var(--dawn);}
.btn-primary:hover{background:var(--dawn-deep);border-color:var(--dawn-deep);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 4px rgba(0,0,0,.18);}
.btn-outline{background:transparent;color:var(--green);border:1px solid var(--green);}
.btn-outline:hover{background:rgba(22,66,60,.07);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(0);}
.btn-light{background:var(--white);color:var(--green);border:1px solid var(--white);}
.btn-light:hover{background:var(--line-soft);transform:translateY(-1px);}
.btn-ghost-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.55);}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);transform:translateY(-1px);}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px;}
.btn-lg{min-height:50px;padding:0 30px;font-size:16px;}
.btn.block{width:100%;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}
.link-more{
  display:inline-block;position:relative;font-size:14px;color:var(--green);
  padding-bottom:2px;transition:color var(--dur) var(--ease);
}
.link-more::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--green);
  transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease);
}
.link-more:hover::after{transform:scaleX(1);}

/* ---------- 首屏 ---------- */
.hero{position:relative;overflow:hidden;padding:44px 0 56px;background:var(--paper);}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(22,66,60,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(22,66,60,.05) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 28% 18%,#000,transparent 74%);
  mask-image:radial-gradient(circle at 28% 18%,#000,transparent 74%);
}
.hero-grid{position:relative;display:grid;gap:32px;}
@media (min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:52px;align-items:center;}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;
  color:var(--dawn);font-weight:500;
}
.eyebrow::before{content:"";width:6px;height:6px;background:var(--dawn);border-radius:1px;}
.hero h1{
  margin-top:16px;font-size:clamp(30px,5.4vw,54px);line-height:1.24;color:var(--ink);
  letter-spacing:-.015em;
}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.85;color:var(--graphite);max-width:34em;}
@media (min-width:1024px){.hero-sub{font-size:18px;}}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;align-items:center;gap:14px;}
.hero-note{font-size:13px;color:var(--gray);}
.trust-bar{margin-top:30px;display:flex;flex-wrap:wrap;row-gap:8px;}
.trust-bar li{font-size:13px;color:var(--mist);letter-spacing:.02em;}
.trust-bar li + li::before{content:"·";margin:0 10px;color:var(--gray);}
.hero-media{border-radius:var(--r-block);overflow:hidden;background:var(--white);box-shadow:var(--shadow-1);}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
@media (min-width:1024px){.hero-media img{aspect-ratio:4/3;}}

/* ---------- 通用板块 ---------- */
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:100px 0;}}
.section-alt{background:var(--white);}
.section-head{max-width:740px;margin-bottom:32px;}
@media (min-width:1024px){.section-head{margin-bottom:44px;}}
.section-head h2{margin-top:12px;font-size:clamp(24px,3.4vw,38px);line-height:1.28;color:var(--ink);}
.section-head p{margin-top:14px;font-size:16px;line-height:1.85;color:var(--graphite);max-width:36em;}
.section-head--row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;max-width:none;}

/* ---------- 三步流程 ---------- */
.step-list{display:grid;gap:0;}
@media (min-width:1024px){.step-list{grid-template-columns:repeat(3,1fr);}}
.step{
  position:relative;padding:26px 0 8px;border-top:1px solid var(--line);
}
@media (min-width:1024px){.step{padding:32px 44px 8px 0;}}
.step-num{
  display:block;font-family:var(--font-serif);font-size:64px;line-height:1;font-weight:700;
  color:var(--green);opacity:.24;letter-spacing:-.02em;
}
@media (min-width:768px){.step-num{font-size:86px;}}
.step-num::after{content:"";display:block;width:44px;height:1px;background:var(--gold);margin-top:14px;opacity:1;}
.step h3{margin-top:16px;font-size:22px;line-height:1.35;color:var(--ink);}
.step p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--graphite);max-width:30em;}
.step .link-more{margin-top:14px;}

/* ---------- 图文要点 ---------- */
.insight{display:grid;gap:32px;align-items:center;}
@media (min-width:1024px){.insight{grid-template-columns:5fr 7fr;gap:60px;}}
.insight-media{border-radius:var(--r-block);overflow:hidden;background:var(--white);box-shadow:var(--shadow-1);}
.insight-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.point-list{display:grid;}
.point-list li{
  display:grid;grid-template-columns:52px 1fr;gap:16px;
  padding:20px 0;border-bottom:1px solid var(--line-soft);
}
.point-list li:first-child{border-top:1px solid var(--line-soft);}
.point-idx{font-family:var(--font-serif);font-size:19px;font-weight:700;color:var(--dawn);line-height:1.6;}
.point-list h3{font-size:18px;line-height:1.4;}
.point-list p{margin-top:6px;font-size:15px;line-height:1.78;color:var(--graphite);}

/* ---------- 案例 ---------- */
.case-grid{display:grid;gap:24px;}
@media (min-width:1024px){.case-grid{grid-template-columns:7fr 5fr;align-items:stretch;}}
.case-main{
  display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.case-main:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.case-main .thumb{overflow:hidden;}
.case-main .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform var(--dur-slow) var(--ease);}
.case-main:hover .thumb img{transform:scale(1.03);}
.case-body{padding:24px;}
.case-tag{
  display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--green);
  background:rgba(22,66,60,.08);border-radius:4px;padding:4px 10px;
}
.case-main h3{margin-top:14px;font-size:22px;line-height:1.4;}
.case-main .excerpt{margin-top:10px;font-size:15px;line-height:1.8;color:var(--graphite);}
.case-stats{display:flex;flex-wrap:wrap;gap:36px;margin-top:22px;padding-top:20px;border-top:1px solid var(--line-soft);}
.case-stats strong{display:block;font-size:36px;line-height:1;font-weight:700;color:var(--green);}
.case-stats span{display:block;margin-top:8px;font-size:12px;color:var(--gray);letter-spacing:.04em;}
.case-side{display:grid;gap:24px;}
.case-mini{
  display:grid;grid-template-columns:104px 1fr;gap:18px;align-items:center;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px;box-shadow:var(--shadow-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.case-mini:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.case-mini .thumb{border-radius:var(--r-img);overflow:hidden;}
.case-mini .thumb img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform var(--dur-slow) var(--ease);}
.case-mini:hover .thumb img{transform:scale(1.04);}
.case-mini h3{font-size:17px;line-height:1.45;color:var(--ink);}
.case-mini p{margin-top:6px;font-size:14px;line-height:1.7;color:var(--gray);}

/* ---------- 分类入口 ---------- */
.cat-grid{display:grid;gap:24px;}
@media (min-width:768px){.cat-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.cat-grid{grid-template-columns:repeat(3,1fr);}}
.cat-card{
  display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.cat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D6DBD5;}
.cat-card .thumb{overflow:hidden;}
.cat-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform var(--dur-slow) var(--ease);}
.cat-card:hover .thumb img{transform:scale(1.03);}
.cat-body{padding:24px;display:flex;flex-direction:column;flex:1;}
.cat-body h3{font-size:20px;line-height:1.4;}
.cat-body p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--graphite);flex:1;}
.cat-arrow{margin-top:18px;display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--green);}
.cat-arrow svg{width:16px;height:16px;transition:transform var(--dur) var(--ease);}
.cat-card:hover .cat-arrow svg{transform:translateX(4px);}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;gap:24px;}
@media (min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);}}
.news-card{
  display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);height:100%;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.news-thumb{position:relative;overflow:hidden;display:block;}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform var(--dur-slow) var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-badge{
  position:absolute;left:12px;top:12px;z-index:2;font-size:12px;line-height:1;
  padding:6px 10px;border-radius:4px;background:rgba(22,66,60,.92);color:#fff;letter-spacing:.04em;
}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.news-body h3{
  font-size:17px;line-height:1.5;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body h3 a{transition:color var(--dur) var(--ease);}
.news-body h3 a:hover{color:var(--green);}
.news-body .excerpt{
  margin-top:10px;font-size:14px;line-height:1.75;color:var(--gray);flex:1;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:18px;padding-top:14px;border-top:1px solid var(--line-soft);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:12px;color:var(--gray);letter-spacing:.03em;
}
.news-meta svg{width:15px;height:15px;transition:transform var(--dur) var(--ease);}
.news-card:hover .news-meta svg{transform:translateX(4px);}

/* ---------- 骨架 / 空态 ---------- */
.skeleton{background:var(--line-soft);border-radius:8px;animation:skeletonPulse 1.2s ease-in-out infinite;}
@keyframes skeletonPulse{0%,100%{opacity:1;}50%{opacity:.55;}}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-card);
  padding:48px 24px;text-align:center;background:var(--white);
  display:flex;flex-direction:column;align-items:center;gap:14px;
}
.empty-state svg{width:36px;height:36px;color:var(--mist);}
.empty-state p{font-size:15px;color:var(--gray);}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;gap:32px;}
@media (min-width:1024px){.faq-layout{grid-template-columns:4fr 8fr;gap:64px;}}
.faq-aside{align-self:start;}
@media (min-width:1024px){.faq-aside{position:sticky;top:96px;}}
.faq-aside h2{margin-top:12px;font-size:clamp(24px,3.2vw,36px);line-height:1.3;}
.faq-aside p{margin-top:14px;font-size:15px;line-height:1.8;color:var(--graphite);max-width:24em;}
.faq-aside .link-more{margin-top:16px;}
.faq-list{padding-left:0;}
@media (min-width:1024px){.faq-list{padding-left:22px;}}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  position:relative;width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:64px;padding:18px 0;text-align:left;font-size:16px;font-weight:500;color:var(--ink);
  transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:var(--green);}
.faq-item.is-open .faq-q{color:var(--green);}
.faq-item.is-open .faq-q::before{
  content:"";position:absolute;left:-22px;top:16px;bottom:16px;width:2px;
  background:var(--dawn);border-radius:2px;
}
@media (max-width:1023px){.faq-item.is-open .faq-q::before{display:none;}}
.faq-icon{flex:none;position:relative;width:22px;height:22px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--mist);
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease);
}
.faq-icon::before{left:1px;right:1px;top:10px;height:2px;border-radius:2px;}
.faq-icon::after{top:1px;bottom:1px;left:10px;width:2px;border-radius:2px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);}
.faq-item.is-open .faq-icon::before{background:var(--dawn);}
.faq-a{max-height:0;overflow:hidden;transition:max-height var(--dur-slow) var(--ease);}
.faq-item.is-open .faq-a{max-height:460px;}
.faq-a p{padding:0 44px 22px 0;font-size:15px;line-height:1.85;color:var(--graphite);}

/* ---------- CTA 通栏 ---------- */
.cta-band{background:var(--green);color:#fff;padding:48px 0;}
@media (min-width:1024px){.cta-band{padding:72px 0;}}
.cta-inner{display:grid;gap:36px;}
@media (min-width:1024px){.cta-inner{grid-template-columns:6fr 5fr;gap:64px;align-items:start;}}
.cta-copy h2{color:#fff;font-size:clamp(24px,3.4vw,36px);line-height:1.3;}
.cta-copy p{margin-top:14px;font-size:16px;line-height:1.85;color:#D5DFDB;max-width:30em;}
.cta-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px;}
.cta-form{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-block);padding:24px;
  display:grid;gap:16px;
}
@media (min-width:1024px){.cta-form{padding:28px;}}
.field{display:grid;gap:8px;}
.field label{font-size:13px;color:#C9CFC9;letter-spacing:.04em;}
.field input,.field textarea{
  width:100%;background:rgba(255,255,255,.94);border:1px solid transparent;
  border-radius:var(--r-btn-alt);padding:12px 14px;font-size:15px;color:var(--ink);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.field textarea{min-height:88px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:#9AA3A0;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--dawn);box-shadow:0 0 0 3px rgba(224,122,63,.28);
}
.field .err{font-size:12px;color:#FFB3A6;min-height:16px;}
.field.has-error input,.field.has-error textarea{border-color:var(--danger);}
.form-tip{font-size:12px;color:#B9C4BF;line-height:1.7;}
.form-success{
  font-size:13px;color:#D8F0DA;background:rgba(255,255,255,.1);
  border-radius:var(--r-btn-alt);padding:10px 14px;
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--green-deep);color:#C9CFC9;padding:56px 0 0;}
@media (min-width:1024px){.site-footer{padding-top:72px;}}
.footer-grid{display:grid;gap:32px;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}}
.footer-brand .logo-text{color:#fff;}
.footer-brand .logo-mark{border-color:rgba(255,255,255,.7);color:#fff;}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.85;color:#A8B4B0;max-width:26em;}
.footer-contact{margin-top:18px;display:grid;gap:8px;font-size:13px;color:#9FADA8;}
.footer-contact span{color:#DDE4E0;}
.footer-col h3{font-size:14px;letter-spacing:.1em;color:#fff;font-weight:700;}
.footer-col ul{margin-top:18px;display:grid;gap:12px;}
.footer-col a{font-size:14px;color:#A8B4B0;transition:color var(--dur) var(--ease);}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 calc(22px + env(safe-area-inset-bottom));
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  font-size:12px;color:#8E9C97;letter-spacing:.02em;
}
.footer-bottom .fb-links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-bottom a{color:#8E9C97;transition:color var(--dur) var(--ease);}
.footer-bottom a:hover{color:#fff;}

/* ---------- 移动端底部 Tab ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:120;display:flex;
  background:var(--white);border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -4px 20px -14px rgba(20,24,26,.28);
}
.tabbar a{
  flex:1;min-height:58px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;font-size:11px;color:var(--gray);position:relative;
  transition:color var(--dur) var(--ease);
}
.tabbar a svg{width:22px;height:22px;}
.tabbar a.is-active{color:var(--green);}
.tabbar a.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:24px;height:2px;background:var(--green);border-radius:0 0 2px 2px;
}
@media (min-width:1024px){.tabbar{display:none;}}
@media (max-width:1023px){
  body{padding-bottom:calc(76px + env(safe-area-inset-bottom));}
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.is-visible{
  opacity:1;transform:none;
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
@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: article */
:root{
  --c-primary:#16423C;
  --c-primary-dark:#0E2E29;
  --c-primary-soft:#E9F0EE;
  --c-mist:#6B7F79;
  --c-bg:#F7F6F2;
  --c-white:#FFFFFF;
  --c-line:#E4E6E1;
  --c-line-soft:#EEF0EB;
  --c-accent:#E07A3F;
  --c-accent-dark:#CB6B33;
  --c-gold:#C9A24A;
  --c-ink:#14181A;
  --c-text:#3C4548;
  --c-gray:#7A8380;
  --c-danger:#C0392B;
  --c-footer-text:#C9CFC9;
  --r-card:16px;
  --r-block:20px;
  --r-btn:999px;
  --r-sm:10px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(20,24,26,.04);
  --shadow-2:0 12px 32px -12px rgba(20,24,26,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:180ms;
  --container:1200px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background-color:var(--c-bg);
  background-image:
    repeating-linear-gradient(0deg,rgba(22,66,60,.05) 0 1px,transparent 1px 88px),
    repeating-linear-gradient(90deg,rgba(22,66,60,.05) 0 1px,transparent 1px 88px);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:-0.01em;line-height:1.25;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--dur) var(--ease);}
img{max-width:100%;display:block;border-radius:var(--r-img);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
svg{display:block;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
@media(min-width:1440px){:root{--container:1280px;}}
.section{padding:56px 0;}
@media(min-width:1024px){.section{padding:96px 0;}}
.section-title{font-size:26px;margin-bottom:8px;}
@media(min-width:1024px){.section-title{font-size:36px;}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--c-mist);
  text-transform:uppercase;font-weight:500;margin-bottom:12px;
}
.eyebrow::before{content:"";width:14px;height:14px;border:1px solid var(--c-gold);background:var(--c-primary);display:inline-block;}
.lead{font-size:16px;color:var(--c-mist);max-width:640px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;white-space:nowrap;
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.18);}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 6px 18px -10px rgba(224,122,63,.9);}
.btn-primary:hover{background:var(--c-accent-dark);transform:translateY(-1px);}
.btn-dark{background:var(--c-primary);color:#fff;}
.btn-dark:hover{background:var(--c-primary-dark);transform:translateY(-1px);}
.btn-ghost{border:1px solid var(--c-line);background:var(--c-white);color:var(--c-primary);border-radius:var(--r-sm);}
.btn-ghost:hover{border-color:var(--c-primary);transform:translateY(-1px);}
.btn-outline-light{border:1px solid rgba(255,255,255,.42);color:#fff;background:transparent;}
.btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.08);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn[disabled],.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 顶部导航 ---------- */
.progress-bar{
  position:fixed;top:0;left:0;height:2px;width:0;background:var(--c-primary);
  z-index:300;transition:width 80ms linear;
}
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(247,246,242,.92);
  border-bottom:1px solid transparent;
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--c-line);box-shadow:0 6px 18px -14px rgba(20,24,26,.35);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:60px;gap:16px;}
@media(min-width:1024px){.header-inner{height:72px;}}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--c-primary);}
.logo-mark{
  width:32px;height:32px;flex:none;border:2px solid var(--c-primary);border-radius:8px;
  display:flex;align-items:center;justify-content:center;background:var(--c-primary);color:#fff;
}
.logo-mark svg{width:18px;height:18px;}
.logo-text{font-size:16px;font-weight:700;letter-spacing:-0.02em;line-height:1.15;}
@media(max-width:479px){.logo-text{font-size:14px;max-width:150px;display:block;}}
.nav-main{display:none;}
@media(min-width:1024px){
  .nav-main{display:flex;align-items:center;gap:4px;}
  .nav-link{
    position:relative;padding:10px 14px;font-size:15px;color:var(--c-text);border-radius:8px;
    transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease);
  }
  .nav-link::after{
    content:"";position:absolute;left:14px;right:14px;bottom:4px;height:1px;background:var(--c-accent);
    transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease);
  }
  .nav-link:hover{color:var(--c-primary);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.is-active{color:var(--c-primary);font-weight:700;background:var(--c-primary-soft);}
  .nav-link.is-active::after{transform:scaleX(1);}
}
.header-actions{display:flex;align-items:center;gap:10px;}
.header-actions .btn-primary{display:none;}
@media(min-width:1024px){.header-actions .btn-primary{display:inline-flex;}}
.menu-toggle{
  width:44px;height:44px;border:1px solid var(--c-line);border-radius:10px;background:#fff;color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
}
.menu-toggle:hover{border-color:var(--c-primary);}
@media(min-width:1024px){.menu-toggle{display:none;}}

.drawer{
  position:fixed;inset:0;z-index:200;background:rgba(14,46,41,.42);
  opacity:0;visibility:hidden;transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);
}
.drawer.is-open{opacity:1;visibility:visible;}
.drawer-panel{
  position:absolute;top:0;right:0;width:min(84vw,340px);height:100%;background:#fff;
  padding:24px 20px 32px;display:flex;flex-direction:column;gap:8px;overflow-y:auto;
  transform:translateX(100%);transition:transform 220ms var(--ease);
}
.drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;}
.drawer-title{font-size:15px;font-weight:700;color:var(--c-primary);}
.drawer-close{width:40px;height:40px;border:1px solid var(--c-line);border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--c-primary);}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 12px;border-radius:10px;color:var(--c-text);font-size:15px;border-bottom:1px solid var(--c-line-soft);
}
.drawer-link:hover,.drawer-link.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:500;}
.drawer-note{margin-top:auto;padding-top:20px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-gray);line-height:1.9;}
.drawer-note strong{color:var(--c-primary);display:block;font-size:14px;margin-bottom:4px;}
.drawer .btn{margin-top:14px;width:100%;}

/* ---------- 移动底部 Tab ---------- */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:150;
  display:flex;background:#fff;border-top:1px solid var(--c-line);
  padding-bottom:env(safe-area-inset-bottom);
}
@media(min-width:1024px){.mobile-tab{display:none;}}
.tab-item{
  flex:1;height:58px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--c-gray);position:relative;min-width:44px;
}
.tab-item svg{width:22px;height:22px;}
.tab-item.is-active{color:var(--c-primary);font-weight:500;}
.tab-item.is-active::before{content:"";position:absolute;top:0;width:22px;height:2px;background:var(--c-primary);border-radius:2px;}
body{padding-bottom:76px;}
@media(min-width:1024px){body{padding-bottom:0;}}

/* ---------- 面包屑 ---------- */
.crumb-wrap{background:var(--c-white);border-bottom:1px solid var(--c-line-soft);}
.breadcrumb{display:flex;align-items:center;gap:10px;flex-wrap:nowrap;padding:16px 0;font-size:13px;color:var(--c-gray);overflow:hidden;}
.breadcrumb a{color:var(--c-mist);white-space:nowrap;}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:var(--c-line);}
.breadcrumb .current{
  color:var(--c-gray);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:52vw;
}
@media(min-width:1024px){.breadcrumb .current{max-width:520px;}}

/* ---------- 文章头 ---------- */
.article-hero{background:var(--c-white);padding:32px 0 0;}
@media(min-width:1024px){.article-hero{padding:48px 0 0;}}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:12px;font-weight:500;letter-spacing:.06em;
}
.badge-dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);}
.article-title{font-size:28px;line-height:1.32;margin:16px 0 16px;max-width:900px;}
@media(min-width:768px){.article-title{font-size:38px;}}
@media(min-width:1024px){.article-title{font-size:44px;}}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;font-size:13px;color:var(--c-mist);}
.article-meta span{display:inline-flex;align-items:center;gap:6px;}
.meta-divider{width:4px;height:4px;border-radius:50%;background:var(--c-line);}
.head-figure{margin:28px 0 0;border-radius:var(--r-block);overflow:hidden;border:1px solid var(--c-line);}
.head-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;}
.head-figure figcaption{font-size:12px;color:var(--c-gray);padding:10px 16px;background:var(--c-white);}

/* ---------- 布局 ---------- */
.article-section{background:var(--c-white);padding:32px 0 56px;}
@media(min-width:1024px){.article-section{padding:48px 0 96px;}}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:0;}
@media(min-width:1280px){.article-layout{grid-template-columns:minmax(0,1fr) 240px;gap:56px;}}
.article-main{max-width:760px;margin:0 auto;min-width:0;}
@media(min-width:1280px){.article-main{margin:0;}}

/* 正文排版 */
.article-content{font-size:16px;line-height:1.85;color:var(--c-text);}
@media(min-width:1024px){.article-content{font-size:17px;}}
.article-content p{margin:0 0 1.2em;}
.article-content h2{font-size:22px;margin:2em 0 .8em;padding-top:8px;position:relative;line-height:1.35;}
.article-content h2::before{content:"";position:absolute;top:-4px;left:0;width:30px;height:2px;background:var(--c-gold);}
.article-content h3{font-size:19px;margin:1.6em 0 .6em;}
@media(min-width:1024px){
  .article-content h2{font-size:26px;}
  .article-content h3{font-size:21px;}
}
.article-content a{color:var(--c-primary);border-bottom:1px solid rgba(22,66,60,.28);}
.article-content a:hover{border-bottom-color:var(--c-accent);color:var(--c-accent-dark);}
.article-content ul,.article-content ol{margin:0 0 1.3em;padding-left:0;}
.article-content ul li,.article-content ol li{position:relative;padding-left:22px;line-height:1.75;margin-bottom:.5em;}
.article-content ul li::before{content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border:1px solid var(--c-primary);background:var(--c-primary-soft);}
.article-content ol{counter-reset:li;}
.article-content ol li{counter-increment:li;}
.article-content ol li::before{
  content:counter(li,decimal-leading-zero);position:absolute;left:0;top:0;
  font-size:12px;font-weight:700;color:var(--c-accent);line-height:1.9;
}
.article-content blockquote{
  margin:1.6em 0;padding:18px 20px;background:var(--c-bg);
  border-left:3px solid var(--c-primary);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--c-text);
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{border-radius:var(--r-img);margin:1.4em 0;box-shadow:var(--shadow-1);}
.article-content figure{margin:1.6em 0;}
.article-content figure figcaption{font-size:12.5px;color:var(--c-gray);text-align:center;margin-top:8px;}
.article-content table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;border:1px solid var(--c-line);}
.article-content th,.article-content td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--c-line);}
.article-content th{background:var(--c-primary-soft);color:var(--c-primary);font-weight:500;}
.article-content tr:last-child td{border-bottom:0;}
.article-content pre{
  background:var(--c-ink);color:#E8EDEA;padding:18px;border-radius:var(--r-sm);
  overflow-x:auto;font-size:14px;line-height:1.7;margin:1.6em 0;
}
.article-content code{word-break:break-word;}
.article-content p code,.article-content li code{
  background:var(--c-line-soft);color:var(--c-primary);padding:2px 6px;border-radius:6px;font-size:14px;
}
.article-content hr{border:0;border-top:1px solid var(--c-line);margin:2.4em 0;}

/* 目录 */
.toc-wrap{display:none;}
@media(min-width:1280px){
  .toc-wrap{display:block;}
  .toc-wrap.is-empty{display:none;}
  .toc{position:sticky;top:100px;}
}
.toc h3{font-size:13px;letter-spacing:.1em;color:var(--c-mist);font-weight:500;text-transform:uppercase;margin-bottom:14px;}
.toc ol{counter-reset:toc;border-left:1px solid var(--c-line);}
.toc li{position:relative;}
.toc a{
  display:block;padding:7px 0 7px 14px;font-size:14px;color:var(--c-gray);line-height:1.5;
  border-left:2px solid transparent;margin-left:-1px;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.toc a:hover{color:var(--c-primary);}
.toc a.is-active{color:var(--c-primary);font-weight:500;border-left-color:var(--c-primary);}
.toc .toc-sub a{padding-left:26px;font-size:13px;}

/* 文末 */
.article-foot{margin-top:48px;padding-top:28px;border-top:1px solid var(--c-line);display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;}
.article-foot .note{font-size:13px;color:var(--c-gray);}

/* 相关推荐 */
.related{padding:56px 0;}
@media(min-width:1024px){.related{padding:80px 0;}}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;}
.card-grid{display:grid;grid-template-columns:1fr;gap:var(--gap);}
@media(min-width:768px){.card-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr);}}
.card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D6DAD3;}
.card-thumb{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--c-line-soft);}
.card-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform var(--dur) var(--ease);}
.card:hover .card-thumb img{transform:scale(1.03);}
.card-tag{
  position:absolute;left:12px;top:12px;height:26px;display:inline-flex;align-items:center;
  padding:0 10px;border-radius:999px;background:rgba(255,255,255,.94);color:var(--c-primary);
  font-size:12px;font-weight:500;letter-spacing:.04em;
}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{font-size:18px;line-height:1.45;color:var(--c-ink);}
.card-text{font-size:14px;color:var(--c-mist);line-height:1.75;}
.card-foot{margin-top:auto;padding-top:12px;border-top:1px solid var(--c-line-soft);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-gray);}
.card-foot .arrow{color:var(--c-accent);}

/* 空态 / 骨架 */
.empty-state{
  border:1px dashed var(--c-line);border-radius:var(--r-card);padding:48px 24px;text-align:center;background:var(--c-bg);
}
.empty-state svg{width:32px;height:32px;margin:0 auto 14px;color:var(--c-mist);}
.empty-state p{font-size:16px;color:var(--c-text);margin-bottom:6px;}
.empty-state small{display:block;font-size:13px;color:var(--c-gray);margin-bottom:20px;}
.skeleton{border-radius:8px;background:var(--c-line-soft);animation:pulse 1.2s ease-in-out infinite;}
.skeleton-line{height:14px;margin-bottom:12px;}
.skeleton-line.w60{width:60%;}
.skeleton-line.w80{width:80%;}
.skeleton-block{height:180px;border-radius:var(--r-card);}
@keyframes pulse{0%,100%{opacity:1;}50%{opacity:.55;}}

/* CTA 通栏 */
.cta-band{background:var(--c-primary);color:#fff;}
.cta-inner{padding:48px 0;display:grid;gap:24px;}
@media(min-width:1024px){.cta-inner{padding:72px 0;grid-template-columns:1.25fr .75fr;align-items:center;gap:48px;}}
.cta-inner h2{color:#fff;font-size:24px;line-height:1.35;}
@media(min-width:1024px){.cta-inner h2{font-size:34px;}}
.cta-inner p{color:#D7E0DC;font-size:15px;margin-top:14px;max-width:520px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-hint{font-size:13px;color:#B9C7C1;margin-top:14px;}

/* 页脚 */
.site-footer{background:var(--c-primary-dark);color:var(--c-footer-text);padding:56px 0 0;margin-top:0;}
@media(min-width:1024px){.site-footer{padding:72px 0 0;}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}}
.footer-brand .logo{color:#fff;margin-bottom:16px;}
.footer-brand .logo-mark{background:transparent;border-color:#4E6C65;color:#fff;}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--c-footer-text);max-width:340px;}
.footer-contact{margin-top:18px;font-size:13px;color:#9FB0AA;display:flex;flex-direction:column;gap:4px;}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:16px;font-weight:500;letter-spacing:.02em;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--c-footer-text);}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  margin-top:40px;border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;font-size:13px;color:#9FB0AA;
}
.fb-links{display:flex;flex-wrap:wrap;gap:16px;align-items:center;}
.fb-links a{color:#9FB0AA;}
.fb-links a:hover{color:#fff;}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 220ms var(--ease),transform 220ms var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

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

/* roulang page: category1 */
:root{
  --ink:#16423C;
  --ink-deep:#0E2E29;
  --mist:#6B7F79;
  --paper:#F7F6F2;
  --white:#FFFFFF;
  --line:#E4E6E1;
  --line-soft:#EEF0EB;
  --orange:#E07A3F;
  --orange-deep:#C9682F;
  --gold:#C9A24A;
  --t1:#14181A;
  --t2:#3C4548;
  --t3:#7A8380;
  --danger:#C0392B;
  --r-card:16px;
  --r-block:20px;
  --r-btn:999px;
  --r-btn2:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(20,24,26,.04);
  --sh-2:0 12px 32px -12px rgba(20,24,26,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:180ms;
  --container:1200px;
  --serif:"Noto Serif SC","Songti SC",Georgia,serif;
}
@media (min-width:1440px){ :root{ --container:1280px; } }

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--t2);
  background:var(--paper);
  padding-bottom:76px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;line-height:1.24;letter-spacing:-0.01em}
h1{font-size:clamp(32px,7vw,58px);line-height:1.16}
h2{font-size:clamp(26px,4.4vw,40px)}
h3{font-size:clamp(19px,2.6vw,24px)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:4px}
::selection{background:rgba(224,122,63,.22)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
.section{padding:56px 0}
.section-head{margin-bottom:32px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.12em;font-weight:500;
  color:var(--ink);text-transform:uppercase;
}
.eyebrow::before{content:"";width:14px;height:14px;border:1px solid var(--gold);background:var(--ink);display:inline-block}
.lead{font-size:17px;color:var(--mist);max-width:38em}
.muted{color:var(--t3);font-size:14px}
.hr{height:1px;background:var(--line);border:0;margin:0}

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

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(247,246,242,.92);
  border-bottom:1px solid transparent;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{background:var(--white);border-bottom-color:var(--line);box-shadow:0 1px 2px rgba(20,24,26,.04)}
.header-inner{height:60px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;border:1.5px solid var(--ink);border-radius:8px;color:var(--ink);flex-shrink:0}
.logo-mark svg{width:16px;height:16px}
.logo-text{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:.02em;white-space:nowrap}
.nav-main{display:none;align-items:center;gap:26px}
.nav-link{position:relative;padding:6px 0;font-size:15px;font-weight:500;color:var(--t2)}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease)}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:700}
.header-actions{display:flex;align-items:center;gap:10px}
.menu-toggle{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:10px;background:var(--white);color:var(--ink)}
.menu-toggle svg{width:20px;height:20px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;border:1px solid transparent;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn:active{transform:translateY(0);box-shadow:inset 0 1px 3px rgba(20,24,26,.16)}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 1px 2px rgba(20,24,26,.06)}
.btn-primary:hover{background:var(--orange-deep);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-ghost{background:var(--white);border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink);transform:translateY(-1px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.08);transform:translateY(-1px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.cta-note{font-size:13.5px;color:var(--t3);margin-top:12px}
.link-more{display:inline-flex;align-items:center;gap:6px;position:relative;font-size:14.5px;font-weight:500;color:var(--ink)}
.link-more::after{content:"";position:absolute;left:0;bottom:-3px;width:100%;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease)}
.link-more:hover::after{transform:scaleX(1)}

/* 标签 / 徽章 */
.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:500;letter-spacing:.06em}
.tag-ink{background:rgba(22,66,60,.08);color:var(--ink)}
.tag-gold{border:1px solid var(--gold);color:#8a6d21}
.tag-plain{border:1px solid var(--line);color:var(--mist);background:var(--white)}

/* Hero */
.hero{position:relative;overflow:hidden;padding:44px 0 56px;background:var(--paper)}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:72px 72px;opacity:.5;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 82%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 82%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
.hero-copy h1{margin:16px 0 18px;max-width:18em}
.hero-lead{font-size:16.5px;color:var(--t2);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.trust-row{display:flex;flex-wrap:wrap;gap:8px 14px;margin-top:28px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--mist)}
.trust-row li{display:inline-flex;align-items:center;gap:8px}
.trust-row li::after{content:"";width:3px;height:3px;border-radius:50%;background:var(--gold)}
.trust-row li:last-child::after{display:none}
.hero-media{position:relative;border-radius:var(--r-block);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1);background:var(--white)}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 220ms var(--ease)}
.hero-media:hover img{transform:scale(1.02)}
.hero-media figcaption{position:absolute;left:16px;bottom:16px;background:rgba(255,255,255,.94);border-radius:999px;padding:6px 14px;font-size:12.5px;color:var(--ink);letter-spacing:.04em}

/* 流程时间线 */
.steps-grid{display:grid;grid-template-columns:1fr;gap:36px}
.timeline{position:relative;padding-left:0}
.timeline-item{position:relative;padding:0 0 34px 64px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{
  content:"";position:absolute;left:19px;top:36px;bottom:-2px;width:1px;background:var(--line);
}
.timeline-item:last-child::before{display:none}
.timeline-idx{
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line);background:var(--white);color:var(--ink);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-size:15px;font-weight:700;letter-spacing:.02em;
}
.timeline-item h3{font-size:20px;margin-bottom:8px}
.timeline-item p{max-width:36em;font-size:15.5px;color:var(--t2)}
.timeline-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;font-size:12.5px;color:var(--mist)}
.timeline-meta span{padding:3px 10px;border:1px solid var(--line);border-radius:999px;background:var(--white)}

/* 要点卡 */
.side-note{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-block);
  padding:24px;box-shadow:var(--sh-1);
}
.side-note h3{font-size:18px;margin-bottom:6px}
.side-note .muted{margin-bottom:18px}
.point-list li{position:relative;padding:12px 0 12px 22px;border-top:1px solid var(--line-soft);font-size:15px}
.point-list li:first-child{border-top:0;padding-top:4px}
.point-list li::before{content:"";position:absolute;left:0;top:21px;width:8px;height:8px;border:1.5px solid var(--ink);border-radius:2px}
.point-list li:first-child::before{top:13px}
.side-note .btn{margin-top:20px}

/* 准备清单 */
.prep-grid{display:grid;grid-template-columns:1fr;gap:20px}
.prep-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.prep-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.prep-card h3{font-size:20px;margin:14px 0 10px}
.check-list li{position:relative;padding:9px 0 9px 30px;font-size:15px;border-bottom:1px solid var(--line-soft)}
.check-list li:last-child{border-bottom:0}
.check-list li::before{
  content:"";position:absolute;left:0;top:15px;width:16px;height:16px;border-radius:5px;
  border:1.5px solid var(--ink);background:
    linear-gradient(45deg,transparent 46%,var(--ink) 46%,var(--ink) 54%,transparent 54%) center/9px 9px no-repeat,
    linear-gradient(-45deg,transparent 46%,var(--ink) 46%,var(--ink) 54%,transparent 54%) center/9px 9px no-repeat;
}
.prep-visual{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);margin-top:6px}
.prep-visual img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* 耗时数据 */
.stat-band{background:var(--white);border:1px solid var(--line);border-radius:var(--r-block);overflow:hidden;display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background-image:linear-gradient(var(--line),var(--line));}
.stat-cell{background:var(--white);padding:26px 22px}
.stat-num{font-family:var(--serif);font-size:clamp(30px,5vw,42px);font-weight:700;color:var(--ink);line-height:1.1}
.stat-num small{font-size:15px;font-weight:500;color:var(--mist);margin-left:4px}
.stat-label{margin-top:8px;font-size:14px;color:var(--t3)}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:1fr;gap:28px}
.faq-aside h2{margin-bottom:12px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:64px;padding:18px 0;text-align:left;font-size:16.5px;font-weight:500;color:var(--t1);
  transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:var(--ink)}
.faq-sign{position:relative;width:18px;height:18px;flex-shrink:0;color:var(--mist);transition:transform var(--dur) var(--ease),color var(--dur) var(--ease)}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;left:50%;top:50%;background:currentColor;transform:translate(-50%,-50%)}
.faq-sign::before{width:14px;height:1.5px}
.faq-sign::after{width:1.5px;height:14px}
.faq-item.is-open .faq-sign{transform:rotate(90deg);color:var(--orange)}
.faq-item.is-open .faq-sign::after{opacity:0}
.faq-item.is-open .faq-q{color:var(--ink)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 220ms var(--ease)}
.faq-a p{padding:0 0 22px;font-size:15.5px;line-height:1.8;color:var(--t2);max-width:44em;border-left:2px solid transparent;padding-left:0}
.faq-item.is-open .faq-a p{border-left-color:var(--orange);padding-left:14px}

/* CTA 通栏 */
.cta{background:var(--ink);color:#DCE6E1;padding:48px 0}
.cta-inner{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
.cta h2{color:#fff;margin-bottom:12px}
.cta p{color:#C9CFC9;max-width:32em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-actions .cta-note{color:#A9B6B0;width:100%;margin-top:2px}

/* 页脚 */
.site-footer{background:var(--ink-deep);color:#C9CFC9;padding:56px 0 28px;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
.site-footer .logo-text{color:#fff}
.site-footer .logo-mark{border-color:rgba(255,255,255,.6);color:#fff}
.footer-brand p{color:#C9CFC9;margin-top:14px;max-width:30em;font-size:14.5px}
.footer-contact{margin-top:16px;display:flex;flex-direction:column;gap:4px;font-size:13.5px;color:#9FB0A9}
.footer-col h3{color:#fff;font-size:15px;letter-spacing:.06em;margin-bottom:14px}
.footer-col li{margin-bottom:10px}
.footer-col a{position:relative;color:#C9CFC9}
.footer-col a::after{content:"";position:absolute;left:0;bottom:-2px;width:100%;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease)}
.footer-col a:hover{color:#fff}
.footer-col a:hover::after{transform:scaleX(1)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-direction:column;gap:12px;font-size:13px;color:#9FB0A9;
}
.fb-links{display:flex;flex-wrap:wrap;gap:16px}
.fb-links a:hover{color:#fff}

/* 移动抽屉 */
.drawer{position:fixed;inset:0;z-index:180;background:var(--white);transform:translateX(100%);transition:transform 220ms var(--ease);display:flex;flex-direction:column}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;border-bottom:1px solid var(--line)}
.drawer-close{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:10px;color:var(--ink)}
.drawer-body{padding:20px;overflow-y:auto}
.drawer-body a.drawer-link{display:flex;align-items:center;justify-content:space-between;min-height:52px;padding:0 4px;border-bottom:1px solid var(--line-soft);font-size:16px;color:var(--t1)}
.drawer-body a.drawer-link.is-active{color:var(--ink);font-weight:700}
.drawer-foot{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.drawer-foot .muted{font-size:13px}

/* 移动底部 Tab */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:150;
  display:flex;background:var(--white);border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.tab-item{
  flex:1;min-height:58px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--t2);position:relative;
}
.tab-item svg{width:22px;height:22px}
.tab-item.is-active{color:var(--ink);font-weight:700}
.tab-item.is-active::before{content:"";position:absolute;top:0;width:26px;height:2px;background:var(--ink);border-radius:0 0 2px 2px}

/* 入场动画 */
.fade-up{opacity:0;transform:translateY(12px);transition:opacity 220ms var(--ease),transform 220ms var(--ease)}
.fade-up.is-in{opacity:1;transform:none}

/* 响应式 */
@media (min-width:768px){
  .section{padding:80px 0}
  .hero{padding:64px 0 80px}
  .header-inner{height:68px}
  .logo-text{font-size:16px}
  .prep-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .stat-band{grid-template-columns:repeat(4,1fr)}
  .cta{padding:64px 0}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:36px}
  .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}
  .cta-inner{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:40px}
}
@media (min-width:1024px){
  body{padding-bottom:0}
  .section{padding:96px 0}
  .hero{padding:76px 0 96px}
  .header-inner{height:72px}
  .logo-mark{width:32px;height:32px}
  .logo-mark svg{width:18px;height:18px}
  .logo-text{font-size:17px}
  .nav-main{display:flex}
  .menu-toggle{display:none}
  .hero-grid{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px}
  .hero h1{font-size:clamp(44px,4.4vw,62px)}
  .steps-grid{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:52px;align-items:start}
  .side-note{position:sticky;top:100px}
  .faq-wrap{grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:48px;align-items:start}
  .faq-aside{position:sticky;top:100px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
  .tabbar{display:none}
  .drawer{display:none}
  .timeline-item h3{font-size:22px}
}
@media (min-width:1024px) and (max-width:1279px){
  .nav-main{gap:20px}
  .nav-link{font-size:14.5px}
}
@media (max-width:479px){
  .hero-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
  .trust-row{font-size:12.5px}
}

/* 深色区块内文字对比 */
.cta h2,.cta p,.cta .cta-note,.site-footer,.site-footer a{text-shadow:none}
.cta .btn-primary:hover{background:#EE8A50}

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

/* roulang page: category2 */
:root{
  --ink:#16423C;
  --ink-deep:#0E2E29;
  --mist:#6B7F79;
  --paper:#F7F6F2;
  --white:#FFFFFF;
  --line:#E4E6E1;
  --line-soft:#EEF0EB;
  --dawn:#E07A3F;
  --dawn-deep:#D16C31;
  --gold:#C9A24A;
  --text:#14181A;
  --text-body:#3C4548;
  --text-muted:#7A8380;
  --danger:#C0392B;
  --radius-card:16px;
  --radius-block:20px;
  --radius-btn:999px;
  --radius-btn-sm:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(20,24,26,.04);
  --shadow-2:0 12px 32px -12px rgba(20,24,26,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
  --gutter:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-bottom:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text-body);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,textarea,select{font:inherit;color:inherit;border-radius:0}
:focus-visible{outline:2px solid var(--dawn);outline-offset:2px}
::selection{background:rgba(224,122,63,.22)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}
@media (min-width:1440px){:root{--container:1280px}}

.skip-link{
  position:absolute;left:16px;top:-64px;z-index:99;
  background:var(--ink);color:#fff;text-decoration:none;
  padding:10px 18px;border-radius:var(--radius-btn-sm);font-size:14px;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:12px}

.label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.12em;color:var(--ink);
  font-weight:700;text-transform:uppercase;
}
.label::before{content:"";width:14px;height:2px;background:var(--gold);border-radius:2px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-scrolled{
  background:#fff;
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-1);
}
.header-inner{display:flex;align-items:center;gap:20px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none}
.logo-mark{
  flex:0 0 auto;width:32px;height:32px;border:1.5px solid var(--ink);border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink);
  background:#fff;transition:transform .18s var(--ease);
}
.logo:hover .logo-mark{transform:translateY(-1px)}
.logo-mark svg{width:18px;height:18px}
.logo-text{
  font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em;
  line-height:1.15;
}
.nav-main{display:none}
@media (min-width:1024px){
  .nav-main{display:flex;align-items:center;gap:2px;margin-left:auto}
}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
  border-radius:10px;font-size:15px;font-weight:500;color:var(--text-body);
  text-decoration:none;transition:color .16s var(--ease),background-color .16s var(--ease);
}
.nav-link:hover{color:var(--ink);background:rgba(22,66,60,.06)}
.nav-link.is-active{color:var(--ink);font-weight:700}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  background:var(--dawn);border-radius:2px;
}
.header-cta{display:flex;align-items:center;gap:10px;margin-left:auto}
@media (min-width:1024px){.header-cta{margin-left:8px}}
.header-cta .btn{display:none}
@media (min-width:1024px){.header-cta .btn{display:inline-flex}}

.drawer-btn{
  width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink);cursor:pointer;
  transition:border-color .16s var(--ease),background-color .16s var(--ease);
}
.drawer-btn:hover{border-color:var(--ink)}
@media (min-width:1024px){.drawer-btn{display:none}}
.drawer-btn svg{width:20px;height:20px}

.drawer{
  position:fixed;inset:0;z-index:80;background:rgba(14,46,41,.32);
  opacity:0;visibility:hidden;transition:opacity .2s var(--ease),visibility .2s var(--ease);
}
.drawer.is-open{opacity:1;visibility:visible}
.drawer-panel{
  position:absolute;top:0;right:0;width:min(86vw,360px);height:100%;
  background:#fff;padding:22px 22px 32px;overflow-y:auto;
  transform:translateX(16px);transition:transform .22s var(--ease);
  display:flex;flex-direction:column;gap:8px;
}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.drawer-close{
  width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:10px;
  cursor:pointer;display:inline-flex;align-items:center;justify-content:center;color:var(--ink);
}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 14px;border-radius:12px;text-decoration:none;font-weight:500;color:var(--text);
  transition:background-color .16s var(--ease),color .16s var(--ease);
}
.drawer-link:hover{background:var(--paper);color:var(--ink)}
.drawer-link.is-active{background:rgba(22,66,60,.07);color:var(--ink);font-weight:700}
.drawer-note{margin-top:auto;padding-top:22px;border-top:1px solid var(--line);font-size:13.5px;color:var(--text-muted);line-height:1.8}
.drawer .btn{margin-top:16px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border:1px solid transparent;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;text-decoration:none;cursor:pointer;
  transition:transform .16s var(--ease),background-color .16s var(--ease),color .16s var(--ease),
             border-color .16s var(--ease),box-shadow .16s var(--ease);
}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--dawn);color:#fff;box-shadow:0 8px 20px -12px rgba(224,122,63,.95)}
.btn-primary:hover{background:var(--dawn-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.16)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink);border-radius:var(--radius-btn-sm);padding:0 20px}
.btn-ghost:hover{border-color:var(--ink);background:#fff;transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:#F1F0EA;transform:translateY(-1px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.52);color:#fff;border-radius:var(--radius-btn-sm)}
.btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.08);transform:translateY(-1px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}

.link-underline{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  color:var(--ink);font-weight:700;text-decoration:none;font-size:14.5px;padding-bottom:2px;
}
.link-underline::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;background:currentColor;
  transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease);
}
.link-underline:hover::after{transform:scaleX(1)}

/* ---------- hero ---------- */
.hero{
  position:relative;padding:56px 0 8px;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(22,66,60,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(22,66,60,.055) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.85),transparent 72%);
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.85),transparent 72%);
}
.hero .container{position:relative}
.hero-narrow{max-width:820px;margin:0 auto;text-align:center}
.hero-title{
  margin:18px 0 0;font-size:32px;line-height:1.24;
}
@media (min-width:768px){.hero-title{font-size:44px}}
@media (min-width:1280px){.hero-title{font-size:52px}}
.hero-lead{margin-top:20px;font-size:16px;color:var(--text-body);line-height:1.85}
@media (min-width:768px){.hero-lead{font-size:17px}}
.hero-lead + .hero-lead{margin-top:10px}
.hero-actions{
  margin-top:30px;display:flex;flex-wrap:wrap;gap:12px;justify-content:center;
}
.hero-note{margin-top:16px;font-size:13px;color:var(--text-muted);letter-spacing:.01em}
.hero-figure{
  margin:40px 0 0;border-radius:var(--radius-block);overflow:hidden;
  border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-1);
}
.hero-figure img{width:100%;height:220px;object-fit:cover}
@media (min-width:768px){.hero-figure img{height:320px}}
@media (min-width:1280px){.hero-figure img{height:400px}}

/* ---------- sections ---------- */
.section{padding:64px 0}
@media (min-width:1024px){.section{padding:96px 0}}
.section-alt{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{
  display:flex;flex-direction:column;gap:18px;margin-bottom:36px;
}
@media (min-width:1024px){
  .section-head{flex-direction:row;align-items:flex-end;justify-content:space-between;gap:40px}
}
.section-title{font-size:26px;margin-top:14px}
@media (min-width:768px){.section-title{font-size:34px}}
@media (min-width:1280px){.section-title{font-size:38px}}
.section-sub{font-size:15.5px;color:var(--text-muted);max-width:52ch;line-height:1.85}

/* ---------- scene grid ---------- */
.scene-grid{
  display:grid;grid-template-columns:1fr;gap:20px;
}
@media (min-width:768px){
  .scene-grid{grid-template-columns:repeat(12,1fr);gap:24px}
  .span-6{grid-column:span 6}
  .span-4{grid-column:span 4}
  .span-5{grid-column:span 5}
  .span-7{grid-column:span 7}
}
.scene-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);padding:16px;text-decoration:none;box-shadow:var(--shadow-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D6DAD4}
.scene-media{
  border-radius:var(--radius-img);overflow:hidden;background:var(--line-soft);
  aspect-ratio:16 / 10;
}
.scene-card--wide .scene-media{aspect-ratio:16 / 7}
.scene-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease)}
.scene-card:hover .scene-media img{transform:scale(1.03)}
.scene-body{padding:20px 8px 8px;display:flex;flex-direction:column;gap:10px;flex:1}
.scene-body h3{font-size:19px}
@media (min-width:768px){.scene-body h3{font-size:21px}}
.scene-body p{font-size:15px;color:var(--text-body);line-height:1.8}
.scene-more{
  margin-top:auto;padding-top:6px;display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;font-weight:700;color:var(--ink);letter-spacing:.02em;
}
.scene-more svg{width:15px;height:15px;transition:transform .18s var(--ease)}
.scene-card:hover .scene-more svg{transform:translateX(3px)}
@media (min-width:768px){
  .scene-card--offset{margin-top:28px}
}
.scene-hint{margin-top:18px;font-size:13px;color:var(--text-muted);display:none}
@media (max-width:767px){
  .scene-grid{
    display:flex;overflow-x:auto;gap:14px;margin:0 calc(var(--gutter) * -1);
    padding:4px var(--gutter) 14px;scroll-snap-type:x mandatory;
    -webkit-overflow-scrolling:touch;scrollbar-width:none;
  }
  .scene-grid::-webkit-scrollbar{display:none}
  .scene-card{flex:0 0 84%;scroll-snap-align:start}
  .scene-hint{display:block}
}

/* ---------- compare table ---------- */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:auto;
  background:#fff;box-shadow:var(--shadow-1);
}
.compare-table{width:100%;min-width:720px;border-collapse:collapse;font-size:15px}
.compare-table caption{
  text-align:left;padding:18px 20px 4px;font-size:13px;color:var(--text-muted);letter-spacing:.04em;
}
.compare-table th,.compare-table td{
  padding:16px 20px;text-align:left;border-bottom:1px solid var(--line-soft);vertical-align:top;
}
.compare-table thead th{
  background:rgba(22,66,60,.06);color:var(--ink);font-size:14px;font-weight:700;letter-spacing:.04em;
  border-bottom:1px solid var(--line);
}
.compare-table tbody td:first-child{font-weight:700;color:var(--text)}
.compare-table tbody tr:last-child td{border-bottom:none}
.compare-table tbody tr:hover{background:#FBFBF8}
.table-caption-note{margin-top:14px;font-size:13px;color:var(--text-muted)}

/* ---------- steps ---------- */
.step-list{display:grid;gap:0}
@media (min-width:1024px){.step-list{grid-template-columns:repeat(3,1fr);gap:0}}
.step-item{
  position:relative;padding:26px 0 26px 0;
  border-top:1px solid var(--line);
}
@media (min-width:1024px){
  .step-item{padding:34px 32px 10px 0;border-top:1px solid var(--line)}
  .step-item:last-child{padding-right:0}
}
.step-num{
  display:block;font-family:Georgia,"Times New Roman",serif;
  font-size:64px;line-height:1;font-weight:700;color:rgba(22,66,60,.16);letter-spacing:-.02em;
}
@media (min-width:1024px){.step-num{font-size:88px}}
.step-item h3{margin-top:14px;font-size:19px}
@media (min-width:768px){.step-item h3{font-size:22px}}
.step-item p{margin-top:10px;font-size:15px;color:var(--text-body);max-width:36ch;line-height:1.82}

/* ---------- faq ---------- */
.faq-grid{display:grid;gap:28px}
@media (min-width:1024px){
  .faq-grid{grid-template-columns:4fr 8fr;gap:56px;align-items:start}
  .faq-aside{position:sticky;top:104px}
}
.faq-aside h2{font-size:26px;margin-top:14px}
@media (min-width:768px){.faq-aside h2{font-size:32px}}
.faq-aside p{margin-top:16px;font-size:15.5px;color:var(--text-muted);line-height:1.85;max-width:34ch}
.faq-aside .link-underline{margin-top:18px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{position:relative;border-bottom:1px solid var(--line);padding-left:14px}
.faq-item::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:2px;border-radius:2px;
  background:transparent;transition:background-color .18s var(--ease);
}
.faq-item[open]::before{background:var(--dawn)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:16px;
  justify-content:space-between;padding:20px 0;font-size:16px;font-weight:500;color:var(--text);
  line-height:1.6;transition:color .16s var(--ease);
}
@media (min-width:768px){.faq-item summary{font-size:17px;min-height:64px;align-items:center}}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--ink)}
.faq-item[open] summary{color:var(--ink);font-weight:700}
.faq-icon{
  position:relative;flex:0 0 26px;width:26px;height:26px;border:1px solid var(--line);
  border-radius:8px;background:#fff;transition:border-color .18s var(--ease),background-color .18s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:11px;height:1.6px}
.faq-icon::after{width:1.6px;height:11px;transition:transform .18s var(--ease),opacity .18s var(--ease)}
.faq-item[open] .faq-icon{border-color:var(--dawn);background:rgba(224,122,63,.1)}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.faq-answer{padding:0 40px 22px 0;font-size:15.5px;line-height:1.85;color:var(--text-body)}

/* ---------- cta ---------- */
.cta-section{padding:64px 0}
@media (min-width:1024px){.cta-section{padding:96px 0}}
.cta-panel{
  background:var(--ink);border-radius:var(--radius-block);padding:40px 22px;
  display:grid;gap:34px;
}
@media (min-width:768px){.cta-panel{padding:56px 44px}}
@media (min-width:1024px){
  .cta-panel{padding:64px 64px;grid-template-columns:1.05fr 1fr;gap:64px;align-items:center}
}
.cta-copy h2{color:#fff;font-size:25px;line-height:1.3}
@media (min-width:768px){.cta-copy h2{font-size:32px}}
.cta-copy > p{margin-top:16px;color:#C9CFC9;font-size:15.5px;line-height:1.85;max-width:40ch}
.cta-points{margin-top:24px;display:grid;gap:10px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;color:#DCE3DE;font-size:14.5px;line-height:1.7}
.cta-points li::before{
  content:"";flex:0 0 7px;width:7px;height:7px;margin-top:8px;border-radius:2px;
  background:var(--gold);
}
.cta-form{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-card);padding:22px;
}
@media (min-width:768px){.cta-form{padding:26px}}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.field label{font-size:13px;letter-spacing:.06em;color:#C9CFC9;font-weight:500}
.field input,.field textarea{
  width:100%;background:rgba(255,255,255,.94);border:1px solid transparent;
  border-radius:var(--radius-btn-sm);padding:12px 14px;font-size:15px;color:var(--text);
  transition:border-color .16s var(--ease),box-shadow .16s var(--ease),background-color .16s var(--ease);
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#9AA3A0}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--dawn);box-shadow:0 0 0 3px rgba(224,122,63,.24);background:#fff;
}
.field input.is-invalid,.field textarea.is-invalid{border-color:var(--danger);box-shadow:0 0 0 3px rgba(192,57,43,.18)}
.form-note{margin-top:12px;font-size:12.5px;color:#AEB8B3;line-height:1.7}
.form-error{margin-top:10px;font-size:13px;color:#F3B4AC;display:none}
.form-error.is-show{display:block}
.form-success{
  margin-top:14px;font-size:13.5px;color:#BFE3C9;border-left:2px solid var(--gold);
  padding-left:10px;line-height:1.7;display:none;
}
.form-success.is-show{display:block}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-deep);color:#C9CFC9;padding:56px 0 0}
@media (min-width:1024px){.site-footer{padding:72px 0 0}}
.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:34px 24px}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1fr;gap:44px 32px}}
.footer-brand{grid-column:1 / -1}
@media (min-width:1024px){.footer-brand{grid-column:auto}}
.footer-brand .logo-text{color:#fff}
.footer-brand .logo-mark{border-color:rgba(255,255,255,.55);background:transparent;color:#fff}
.footer-brand > p{margin-top:18px;font-size:14.5px;line-height:1.85;color:#A9B4AE;max-width:40ch}
.footer-contact{margin-top:18px;display:flex;flex-direction:column;gap:6px;font-size:13.5px;color:#93A09A}
.footer-col h3{color:#fff;font-size:15px;font-weight:700;letter-spacing:.02em;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{
  color:#C9CFC9;text-decoration:none;font-size:14.5px;
  transition:color .16s var(--ease);
}
.footer-col a:hover{color:#fff}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.13);
  padding:20px 0 30px;display:flex;flex-wrap:wrap;gap:12px 24px;
  align-items:center;justify-content:space-between;font-size:13px;color:#93A09A;
}
.fb-links{display:flex;flex-wrap:wrap;gap:16px;align-items:center}
.fb-links a{color:#C9CFC9;text-decoration:none;transition:color .16s var(--ease)}
.fb-links a:hover{color:#fff}

/* ---------- mobile tabbar ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:#fff;border-top:1px solid var(--line);
  display:grid;grid-template-columns:repeat(4,1fr);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 20px -16px rgba(20,24,26,.35);
}
@media (min-width:1024px){.tabbar{display:none}}
.tab-item{
  position:relative;height:58px;display:flex;flex-direction:column;align-items:center;
  justify-content:center;gap:3px;text-decoration:none;color:var(--mist);
  font-size:11px;letter-spacing:.02em;transition:color .16s var(--ease);
}
.tab-item::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%) scaleX(0);
  width:26px;height:2px;background:var(--dawn);border-radius:0 0 3px 3px;
  transition:transform .18s var(--ease);
}
.tab-item .tab-icon{width:22px;height:22px}
.tab-item.is-active{color:var(--ink);font-weight:700}
.tab-item.is-active::before{transform:translateX(-50%) scaleX(1)}
@media (max-width:1023px){
  body{padding-bottom:calc(58px + env(safe-area-inset-bottom) + 16px)}
}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (max-width:479px){
  :root{--gutter:16px}
  .logo-text{font-size:14.5px;white-space:normal;max-width:150px}
  .hero-title{font-size:28px}
  .section-title{font-size:23px}
  .scene-body h3{font-size:18px}
  .step-num{font-size:56px}
}
@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}
  .scene-card:hover,.btn:hover{transform:none}
  .scene-card:hover .scene-media img{transform:none}
  .scene-card:hover .scene-more svg{transform:none}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --c-ink:#16423C;
  --c-ink-deep:#0E2E29;
  --c-mist:#6B7F79;
  --c-paper:#F7F6F2;
  --c-white:#FFFFFF;
  --c-line:#E4E6E1;
  --c-line-soft:#EEF0EB;
  --c-orange:#E07A3F;
  --c-orange-deep:#C9672F;
  --c-gold:#C9A24A;
  --c-error:#C0392B;
  --t-title:#14181A;
  --t-body:#3C4548;
  --t-mute:#7A8380;
  --r-card:16px;
  --r-block:20px;
  --r-btn:999px;
  --r-sm:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(20,24,26,.04);
  --sh-2:0 12px 32px -12px rgba(20,24,26,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sect:56px;
  --gutter:20px;
}
@media (min-width:768px){ :root{ --gutter:24px; } }
@media (min-width:1024px){ :root{ --sect:104px; } }

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--t-body);
  background:var(--c-paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--c-orange);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(224,122,63,.22);}

/* ============ 容器与排版 ============ */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 var(--gutter);
}
@media (min-width:1440px){ .container{max-width:1280px;} }

.section{padding:var(--sect) 0;}
.section--tight{padding:calc(var(--sect) * .62) 0;}
.section--paper{background:var(--c-paper);}
.section--white{background:var(--c-white);}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  letter-spacing:.12em;
  color:var(--c-mist);
  text-transform:uppercase;
  font-weight:500;
}
.eyebrow::before{
  content:"";
  width:14px;height:14px;
  border:1.5px solid var(--c-gold);
  border-radius:3px;
  background:linear-gradient(135deg,rgba(201,162,74,.18),rgba(201,162,74,0));
}
.section-head{margin-bottom:32px;}
.section-head h2{
  font-size:26px;
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--t-title);
  margin-top:14px;
}
@media (min-width:1024px){ .section-head h2{font-size:38px;} }
.section-head p{
  margin-top:14px;
  max-width:34em;
  color:var(--t-mute);
  font-size:15.5px;
}
.section-head--center{text-align:center;}
.section-head--center p{margin-left:auto;margin-right:auto;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:70;
  background:rgba(247,246,242,.94);
  border-bottom:1px solid transparent;
  transition:background-color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-scrolled{
  background:var(--c-white);
  border-bottom-color:var(--c-line);
  box-shadow:var(--sh-1);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  height:60px;
}
@media (min-width:1024px){ .header-inner{height:72px;gap:20px;} }

.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:32px;height:32px;
  flex:0 0 32px;
  border:1.5px solid var(--c-ink);
  border-radius:9px;
  display:grid;
  place-items:center;
  color:var(--c-ink);
  background:var(--c-white);
}
.logo-mark svg{width:18px;height:18px;}
.logo-text{
  font-weight:700;
  font-size:14.5px;
  line-height:1.22;
  letter-spacing:-.01em;
  color:var(--c-ink);
  max-width:152px;
}
@media (min-width:1024px){
  .logo-text{font-size:17px;max-width:none;white-space:nowrap;}
}

.nav-main{display:none;}
@media (min-width:1024px){
  .nav-main{
    display:flex;
    align-items:center;
    gap:2px;
    margin-left:auto;
  }
}
.nav-link{
  position:relative;
  padding:8px 13px;
  font-size:15px;
  font-weight:500;
  color:var(--t-body);
  border-radius:8px;
  transition:color .18s var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:13px;right:13px;bottom:3px;
  height:1px;
  background:currentColor;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--c-ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-ink);font-weight:700;}
.nav-link.is-active::after{transform:scaleX(1);background:var(--c-orange);}

.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.header-actions .btn{display:none;}
@media (min-width:1024px){ .header-actions .btn{display:inline-flex;} }

.menu-toggle{
  width:44px;height:44px;
  display:grid;place-items:center;
  border:1px solid var(--c-line);
  border-radius:12px;
  background:var(--c-white);
  color:var(--c-ink);
}
.menu-toggle span{
  display:block;
  width:18px;height:2px;
  background:currentColor;
  border-radius:2px;
  position:relative;
}
.menu-toggle span::before,
.menu-toggle span::after{
  content:"";
  position:absolute;left:0;
  width:18px;height:2px;
  background:currentColor;
  border-radius:2px;
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}
@media (min-width:1024px){ .menu-toggle{display:none;} }

.mobile-drawer{
  position:fixed;
  top:60px;left:0;right:0;bottom:0;
  z-index:65;
  background:var(--c-white);
  padding:20px var(--gutter) 40px;
  overflow-y:auto;
  display:none;
  border-top:1px solid var(--c-line);
}
.mobile-drawer.is-open{display:block;}
@media (min-width:1024px){ .mobile-drawer{display:none !important;} }
.drawer-title{
  font-size:12.5px;
  letter-spacing:.12em;
  color:var(--c-mist);
  margin-bottom:10px;
}
.drawer-nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:52px;
  padding:0 4px;
  border-bottom:1px solid var(--c-line-soft);
  font-size:16px;
  font-weight:500;
  color:var(--t-title);
}
.drawer-nav a.is-active{color:var(--c-ink);font-weight:700;}
.drawer-nav a.is-active::after{
  content:"";
  width:6px;height:6px;
  border-radius:50%;
  background:var(--c-orange);
}
.drawer-info{
  margin-top:28px;
  padding:20px;
  background:var(--c-paper);
  border-radius:var(--r-block);
  font-size:14px;
  color:var(--t-mute);
  line-height:1.9;
}
.drawer-info strong{
  display:block;
  color:var(--t-title);
  font-size:15px;
  margin-bottom:6px;
}
.drawer-cta{margin-top:20px;display:flex;flex-direction:column;gap:10px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  cursor:pointer;
  transition:transform .16s var(--ease),background-color .16s var(--ease),border-color .16s var(--ease),box-shadow .16s var(--ease),color .16s var(--ease);
}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;}
.btn-primary{background:var(--c-orange);color:#fff;box-shadow:0 8px 18px -12px rgba(224,122,63,.9);}
.btn-primary:hover{background:var(--c-orange-deep);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.16);}
.btn-ghost{
  background:var(--c-white);
  border-color:var(--c-line);
  color:var(--c-ink);
}
.btn-ghost:hover{border-color:var(--c-ink);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);box-shadow:inset 0 1px 4px rgba(20,24,26,.08);}
.btn-light{
  background:transparent;
  border-color:rgba(255,255,255,.55);
  color:#fff;
}
.btn-light:hover{border-color:#fff;background:rgba(255,255,255,.08);transform:translateY(-1px);}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px;border-radius:var(--r-btn);}
.btn-block{width:100%;}

/* ============ 首屏 ============ */
.page-hero{
  position:relative;
  padding:48px 0 40px;
  background:var(--c-paper);
  text-align:center;
  overflow:hidden;
  border-bottom:1px solid var(--c-line-soft);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(var(--c-line-soft) 1px,transparent 1px),
    linear-gradient(90deg,var(--c-line-soft) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.55;
  -webkit-mask-image:radial-gradient(120% 80% at 50% 0%,#000 10%,transparent 78%);
  mask-image:radial-gradient(120% 80% at 50% 0%,#000 10%,transparent 78%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1;}
.hero-narrow{max-width:820px;margin:0 auto;}
.page-hero h1{
  margin-top:18px;
  font-size:32px;
  line-height:1.22;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--t-title);
}
@media (min-width:768px){ .page-hero h1{font-size:42px;} }
@media (min-width:1024px){ .page-hero h1{font-size:54px;line-height:1.18;} }
.hero-lead{
  margin:20px auto 0;
  max-width:34em;
  font-size:16px;
  line-height:1.85;
  color:var(--t-body);
}
@media (min-width:1024px){ .hero-lead{font-size:17px;} }
.hero-actions{
  margin-top:30px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:center;
}
.hero-note{
  margin-top:14px;
  font-size:13px;
  color:var(--t-mute);
  letter-spacing:.02em;
}
.hero-trust{
  margin-top:32px;
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:8px 14px;
  font-size:13px;
  color:var(--c-mist);
}
.hero-trust span{display:inline-flex;align-items:center;gap:8px;}
.hero-trust span:not(:last-child)::after{
  content:"·";
  color:var(--c-line);
  margin-left:6px;
}

/* ============ 数据条 ============ */
.stat-strip{
  margin-top:40px;
  display:grid;
  grid-template-columns:1fr;
  gap:1px;
  background:var(--c-line);
  border:1px solid var(--c-line);
  border-radius:var(--r-block);
  overflow:hidden;
  text-align:left;
}
@media (min-width:768px){ .stat-strip{grid-template-columns:repeat(3,1fr);} }
.stat{
  background:var(--c-white);
  padding:22px 22px 24px;
}
.stat-num{
  font-family:Inter,"Noto Sans SC",sans-serif;
  font-size:36px;
  font-weight:700;
  line-height:1;
  color:var(--c-ink);
  letter-spacing:-.02em;
}
.stat-num small{
  font-size:14px;
  font-weight:500;
  margin-left:6px;
  color:var(--c-mist);
  letter-spacing:0;
}
.stat-label{
  margin-top:12px;
  font-size:14.5px;
  color:var(--t-title);
  font-weight:500;
}
.stat-desc{
  margin-top:4px;
  font-size:13px;
  color:var(--t-mute);
  line-height:1.7;
}

/* ============ 筛选条 ============ */
.filter-wrap{margin-bottom:28px;}
.filter-label{
  text-align:center;
  font-size:12.5px;
  letter-spacing:.12em;
  color:var(--c-mist);
  margin-bottom:14px;
}
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  justify-content:center;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  min-height:40px;
  padding:0 16px;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  background:var(--c-white);
  color:var(--t-body);
  font-size:14px;
  font-weight:500;
  transition:background-color .16s var(--ease),border-color .16s var(--ease),color .16s var(--ease),transform .16s var(--ease);
}
.chip:hover{border-color:var(--c-mist);color:var(--c-ink);transform:translateY(-1px);}
.chip.is-active{
  background:var(--c-ink);
  border-color:var(--c-ink);
  color:#fff;
}
.chip.is-active:hover{background:var(--c-ink-deep);border-color:var(--c-ink-deep);color:#fff;}
.chip-count{
  font-size:12px;
  opacity:.7;
  font-family:Inter,sans-serif;
}

/* ============ 分组 FAQ ============ */
.faq-groups{max-width:860px;margin:0 auto;}
.faq-group{padding-top:36px;}
.faq-group:first-child{padding-top:0;}
.faq-group + .faq-group{border-top:1px solid var(--c-line);margin-top:36px;}
.faq-group[hidden]{display:none;}
.group-head{display:flex;align-items:baseline;gap:12px;margin-bottom:6px;}
.group-num{
  font-family:Inter,sans-serif;
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--c-gold);
}
.group-head h3{
  font-size:20px;
  font-weight:700;
  color:var(--t-title);
  letter-spacing:-.01em;
}
@media (min-width:1024px){ .group-head h3{font-size:22px;} }
.group-sub{
  font-size:13.5px;
  color:var(--t-mute);
  margin-bottom:14px;
}
.faq-list{border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  position:relative;
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 4px 20px 16px;
  text-align:left;
  font-size:16px;
  font-weight:500;
  line-height:1.5;
  color:var(--t-title);
  transition:color .16s var(--ease);
}
@media (min-width:1024px){ .faq-q{font-size:17px;min-height:64px;} }
.faq-q::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:2px;height:0;
  background:var(--c-orange);
  transform:translateY(-50%);
  transition:height .22s var(--ease);
}
.faq-q:hover{color:var(--c-ink);}
.faq-item.is-open .faq-q{color:var(--c-ink);font-weight:700;}
.faq-item.is-open .faq-q::before{height:24px;}
.faq-icon{
  position:relative;
  flex:0 0 18px;
  width:18px;height:18px;
  margin-left:auto;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--c-ink);
  border-radius:2px;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .26s var(--ease);
}
.faq-a p{
  padding:0 40px 22px 16px;
  font-size:15.5px;
  line-height:1.82;
  color:var(--t-mute);
  max-width:38em;
}

/* ============ 准备清单 ============ */
.prep-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  align-items:center;
}
@media (min-width:1024px){
  .prep-grid{grid-template-columns:1fr 1fr;gap:56px;}
}
.prep-figure{
  border-radius:var(--r-block);
  overflow:hidden;
  border:1px solid var(--c-line);
  background:var(--c-white);
  box-shadow:var(--sh-1);
}
.prep-figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  transition:transform .22s var(--ease);
}
.prep-figure:hover img{transform:scale(1.03);}
.prep-list{counter-reset:prep;}
.prep-item{
  display:flex;
  gap:16px;
  padding:18px 0;
  border-bottom:1px solid var(--c-line-soft);
}
.prep-item:last-child{border-bottom:0;}
.prep-index{
  flex:0 0 auto;
  width:28px;height:28px;
  border-radius:8px;
  border:1.5px solid var(--c-gold);
  color:var(--c-ink);
  font-family:Inter,sans-serif;
  font-size:13px;
  font-weight:700;
  display:grid;
  place-items:center;
  margin-top:3px;
}
.prep-item h4{
  font-size:16px;
  font-weight:700;
  color:var(--t-title);
  margin-bottom:4px;
}
.prep-item p{
  font-size:14.5px;
  color:var(--t-mute);
  line-height:1.82;
  max-width:36em;
}

/* ============ 联系卡 ============ */
.support-card{
  background:var(--c-paper);
  border:1px solid var(--c-line-soft);
  border-radius:var(--r-block);
  padding:32px 22px;
  text-align:center;
}
@media (min-width:768px){ .support-card{padding:52px 48px;} }
.support-card h2{
  font-size:24px;
  font-weight:700;
  color:var(--t-title);
  letter-spacing:-.01em;
}
@media (min-width:1024px){ .support-card h2{font-size:32px;} }
.support-card p{
  margin:16px auto 0;
  max-width:32em;
  font-size:15.5px;
  color:var(--t-mute);
}
.support-card .hero-actions{margin-top:28px;}
.support-meta{
  margin-top:26px;
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:10px 22px;
  font-size:13px;
  color:var(--c-mist);
}

/* ============ CTA 通栏 ============ */
.cta-band{
  background:var(--c-ink);
  border-radius:var(--r-block);
  padding:48px 22px;
  color:#fff;
}
@media (min-width:1024px){ .cta-band{padding:72px 56px;} }
.cta-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:36px;
  align-items:start;
}
@media (min-width:1024px){ .cta-grid{grid-template-columns:1fr 1fr;gap:72px;} }
.cta-band h2{
  font-size:26px;
  line-height:1.28;
  font-weight:700;
  letter-spacing:-.01em;
  color:#fff;
}
@media (min-width:1024px){ .cta-band h2{font-size:38px;} }
.cta-band .cta-sub{
  margin-top:16px;
  font-size:15.5px;
  line-height:1.85;
  color:#C9CFC9;
  max-width:32em;
}
.cta-points{
  margin-top:26px;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.cta-points li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:14.5px;
  color:#DDE3DD;
  line-height:1.7;
}
.cta-points li::before{
  content:"";
  flex:0 0 auto;
  width:6px;height:6px;
  margin-top:9px;
  border-radius:50%;
  background:var(--c-orange);
}

/* ============ 表单 ============ */
.form{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-block);
  padding:24px 20px;
}
@media (min-width:768px){ .form{padding:28px 26px;} }
.form-row{margin-bottom:16px;}
.form-label{
  display:block;
  font-size:13px;
  letter-spacing:.06em;
  color:#C9CFC9;
  margin-bottom:8px;
}
.form-control{
  width:100%;
  min-height:48px;
  padding:12px 14px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  background:var(--c-white);
  color:var(--t-title);
  font-size:15px;
  line-height:1.6;
  transition:border-color .16s var(--ease),box-shadow .16s var(--ease);
}
textarea.form-control{min-height:118px;resize:vertical;}
.form-control::placeholder{color:#9AA39F;}
.form-control:focus{
  outline:none;
  border-color:var(--c-orange);
  box-shadow:0 0 0 3px rgba(224,122,63,.28);
}
.form-row.has-error .form-control{
  border-color:var(--c-error);
  box-shadow:0 0 0 3px rgba(192,57,43,.2);
}
.field-error{
  display:none;
  margin-top:7px;
  font-size:13px;
  color:#F0A79E;
}
.form-row.has-error .field-error{display:block;}
.form-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:6px;}
.form-hint{
  font-size:13px;
  color:#9FA9A4;
  line-height:1.7;
}
.form-status{
  display:none;
  margin-top:14px;
  padding:12px 14px;
  border-radius:var(--r-sm);
  background:rgba(224,122,63,.14);
  border:1px solid rgba(224,122,63,.4);
  font-size:14px;
  color:#F4D5C2;
}
.form-status.is-show{display:block;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-ink-deep);
  color:#C9CFC9;
  padding:56px 0 0;
  margin-top:0;
}
@media (min-width:1024px){ .site-footer{padding:72px 0 0;} }
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
}
@media (min-width:768px){ .footer-grid{grid-template-columns:repeat(2,1fr);gap:36px;} }
@media (min-width:1024px){ .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;} }
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo-mark{border-color:rgba(255,255,255,.35);background:transparent;color:#fff;}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{
  font-size:14px;
  line-height:1.85;
  color:#A9B3AE;
  max-width:30em;
}
.footer-contact{
  margin-top:18px;
  display:flex;
  flex-direction:column;
  gap:6px;
  font-size:13.5px;
  color:#9AA5A0;
}
.footer-col h3{
  font-size:14px;
  font-weight:700;
  color:#fff;
  letter-spacing:.06em;
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{
  font-size:14.5px;
  color:#B7C0BB;
  position:relative;
  display:inline-block;
  transition:color .16s var(--ease);
}
.footer-col a::after{
  content:"";
  position:absolute;
  left:0;bottom:-2px;
  width:100%;height:1px;
  background:var(--c-orange);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .2s var(--ease);
}
.footer-col a:hover{color:#fff;}
.footer-col a:hover::after{transform:scaleX(1);}
.footer-bottom{
  margin-top:48px;
  padding:22px 0 26px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;
  flex-direction:column;
  gap:12px;
  font-size:13px;
  color:#8E9994;
}
@media (min-width:768px){
  .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;}
}
.fb-links{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;}
.fb-links a{color:#B7C0BB;transition:color .16s var(--ease);}
.fb-links a:hover{color:#fff;}

/* ============ 移动底部 Tab ============ */
.tabbar{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:80;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  background:var(--c-white);
  border-top:1px solid var(--c-line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 20px -14px rgba(20,24,26,.28);
}
@media (min-width:1024px){ .tabbar{display:none;} }
.tab-item{
  position:relative;
  min-height:58px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  font-size:11px;
  color:var(--t-mute);
  transition:color .16s var(--ease);
}
.tab-item svg{width:22px;height:22px;}
.tab-item::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  transform:translateX(-50%) scaleX(0);
  width:26px;height:2px;
  background:var(--c-ink);
  border-radius:0 0 2px 2px;
  transition:transform .2s var(--ease);
}
.tab-item.is-active{color:var(--c-ink);font-weight:700;}
.tab-item.is-active::before{transform:translateX(-50%) scaleX(1);}
@media (max-width:1023px){
  body{padding-bottom:76px;}
}

/* ============ 入场动效 ============ */
[data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
[data-reveal].is-in{opacity:1;transform:none;}

/* ============ 通用文本链 ============ */
.text-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:500;
  color:var(--c-ink);
}
.text-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-3px;
  height:1px;
  background:var(--c-orange);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .2s var(--ease);
}
.text-link:hover::after{transform:scaleX(1);}
.text-link svg{width:14px;height:14px;}

/* ============ 无障碍降级 ============ */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  [data-reveal]{opacity:1;transform:none;}
}