/* roulang page: index */
:root{
  --ink:#0E1512;
  --ink-soft:#1B2420;
  --accent:#C8F24B;
  --accent-deep:#2E6B57;
  --paper:#F7F6F2;
  --paper-2:#ECEAE2;
  --line:#DBD8CE;
  --muted:#5D655F;
  --alert:#C0392B;
  --light:#F2F1EC;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --num:"Barlow Condensed","Oswald","PingFang SC","Microsoft YaHei",sans-serif;
  --r:4px;
  --r-sm:2px;
  --container:1240px;
  --dur:180ms;
  --ease:cubic-bezier(.2,.7,.2,1);
  --shadow-hover:0 14px 30px -18px rgba(14,21,18,.28);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.78;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;padding:0;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3{letter-spacing:-0.02em;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
::selection{background:var(--accent);color:var(--ink);}

/* ============ 容器 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--paper2{background:var(--paper-2);}
.section--ink{background:var(--ink);color:var(--light);}

/* ============ 通用排版 ============ */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  font-weight:500;
  letter-spacing:.04em;
  color:var(--muted);
  margin-bottom:18px;
}
.eyebrow::before{
  content:"";
  width:3px;
  height:14px;
  background:var(--accent);
  display:inline-block;
}
.section--ink .eyebrow{color:rgba(242,241,236,.72);}
.h2{
  font-size:clamp(28px,3vw,42px);
  font-weight:800;
  line-height:1.15;
  letter-spacing:-0.02em;
}
.lead{
  margin-top:16px;
  color:var(--muted);
  font-size:16px;
  line-height:1.78;
  max-width:640px;
}
.section--ink .lead{color:rgba(242,241,236,.72);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:40px;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-weight:600;
  font-size:15px;
  position:relative;
  padding-bottom:2px;
  color:var(--ink);
  white-space:nowrap;
  transition:color var(--dur) var(--ease);
}
.text-link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  height:1px;width:0;
  background:var(--accent-deep);
  transition:width 240ms var(--ease);
}
.text-link:hover::after{width:100%;}
.text-link:hover{color:var(--accent-deep);}
.text-link i{font-size:12px;transition:transform var(--dur) var(--ease);}
.text-link:hover i{transform:translateX(3px);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:600;
  line-height:1;
  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-primary{background:var(--accent);color:var(--ink);border-color:var(--accent);}
.btn-primary:hover{background:#d5f76b;border-color:#d5f76b;transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--ink);transform:translateY(-2px);}
.btn-dark{background:var(--ink);color:var(--light);border-color:var(--ink);}
.btn-dark:hover{background:var(--ink-soft);transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-block;
  padding:3px 9px;
  border-radius:var(--r-sm);
  font-size:12px;
  font-weight:500;
  letter-spacing:.04em;
  background:var(--accent-deep);
  color:#F2F1EC;
  line-height:1.6;
}
.badge--outline{
  background:transparent;
  border:1px solid var(--line);
  color:var(--muted);
}
.chip-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  color:var(--muted);
  letter-spacing:.02em;
}
.chip + .chip::before{
  content:"";
  display:inline-block;
  width:1px;height:11px;
  background:var(--line);
  margin-right:10px;
}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--paper);
  border-bottom:1px solid var(--line);
}
.header-top{
  height:68px;
  overflow:hidden;
  transition:height 300ms var(--ease),opacity 220ms var(--ease);
  border-bottom:1px solid var(--line);
}
.site-header.is-scrolled .header-top{height:0;opacity:0;border-bottom-color:transparent;}
.header-top-inner{
  height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.logo{display:inline-flex;align-items:center;gap:10px;}
.logo-mark{
  width:26px;height:26px;
  border:2px solid var(--ink);
  border-radius:50%;
  position:relative;
  flex:0 0 auto;
}
.logo-mark::after{
  content:"";
  position:absolute;
  inset:5px;
  border-radius:50%;
  background:var(--accent);
}
.logo-text{
  font-size:20px;
  font-weight:900;
  letter-spacing:-0.02em;
  line-height:1;
  display:inline-flex;
  align-items:baseline;
  gap:8px;
}
.logo-sub{
  font-size:10px;
  font-weight:500;
  letter-spacing:.16em;
  color:var(--muted);
  transform:translateY(-1px);
}
.header-actions{display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;
  align-items:center;
  height:40px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:#fff;
  overflow:hidden;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.search-box:focus-within{border-color:var(--ink);box-shadow:0 0 0 2px var(--accent);}
.search-box input{
  width:210px;
  height:100%;
  border:0;
  background:transparent;
  padding:0 12px;
  font-size:14px;
  outline:none;
}
.search-box input::placeholder{color:#9AA39D;}
.search-box button{
  width:40px;height:100%;
  color:var(--muted);
  display:grid;place-items:center;
  transition:color var(--dur) var(--ease);
}
.search-box button:hover{color:var(--ink);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
}
.nav-toggle span{width:18px;height:2px;background:var(--ink);display:block;transition:transform 200ms var(--ease),opacity 200ms var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.header-nav{padding:10px 0;background:var(--paper);}
.nav-inner{display:flex;align-items:center;gap:16px;}
.channel-tabs{
  display:flex;
  align-items:center;
  gap:8px;
  flex:1 1 auto;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
  padding-right:40px;
  -webkit-mask-image:linear-gradient(to right,#000 calc(100% - 40px),transparent 100%);
  mask-image:linear-gradient(to right,#000 calc(100% - 40px),transparent 100%);
}
.channel-tabs::-webkit-scrollbar{display:none;}
.tab{
  flex:0 0 auto;
  height:40px;
  display:inline-flex;
  align-items:center;
  padding:0 18px;
  border-radius:999px;
  font-size:15px;
  font-weight:500;
  color:var(--muted);
  white-space:nowrap;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.tab:hover{background:var(--paper-2);color:var(--ink);}
.tab.active{background:var(--accent);color:var(--ink);font-weight:600;}
.nav-cta{flex:0 0 auto;height:40px;padding:0 18px;font-size:14px;}

/* ============ Hero ============ */
.hero{padding:64px 0 88px;overflow:hidden;}
.hero-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:24px;
  align-items:center;
}
.hero-copy{grid-column:span 7;padding-right:40px;}
.hero-media{grid-column:span 5;}
.hero h1{
  font-size:clamp(40px,5.2vw,68px);
  font-weight:900;
  line-height:1.06;
  letter-spacing:-0.02em;
}
.hero h1 em{
  font-style:normal;
  box-shadow:inset 0 -8px 0 var(--accent);
  padding-bottom:2px;
}
.hero-sub{
  margin-top:22px;
  font-size:17px;
  line-height:1.8;
  color:var(--muted);
  max-width:520px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-trust{
  margin-top:28px;
  display:flex;
  flex-wrap:wrap;
  gap:6px 0;
  align-items:center;
  font-size:12px;
  letter-spacing:.03em;
  color:var(--muted);
}
.hero-trust span{display:inline-flex;align-items:center;}
.hero-trust span + span::before{
  content:"";
  width:1px;height:11px;
  background:var(--line);
  margin:0 12px;
  display:inline-block;
}
.hero-media{position:relative;}
.hero-media .frame{
  position:relative;
  aspect-ratio:4/5;
  border-radius:var(--r);
  overflow:hidden;
  background:var(--paper-2);
  box-shadow:inset 0 0 0 1px rgba(14,21,18,.12);
}
.hero-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform 600ms var(--ease);
}
.hero-media:hover img{transform:scale(1.03);}
.hero-media .hero-tag{
  position:absolute;
  left:16px;bottom:16px;
  background:rgba(14,21,18,.86);
  color:var(--light);
  font-size:12px;
  letter-spacing:.04em;
  padding:7px 12px;
  border-radius:var(--r-sm);
  backdrop-filter:blur(2px);
}

/* ============ 痛点区 ============ */
.pains{background:var(--ink);color:var(--light);padding:88px 0;}
.pain-list{margin-top:36px;border-top:1px solid rgba(255,255,255,.12);}
.pain-item{
  display:flex;
  align-items:center;
  gap:28px;
  padding:24px 12px;
  border-bottom:1px solid rgba(255,255,255,.12);
  transition:background var(--dur) var(--ease);
}
.pain-item:hover{background:rgba(255,255,255,.04);}
.pain-num{
  font-family:var(--num);
  font-size:34px;
  font-weight:700;
  line-height:1;
  letter-spacing:.02em;
  color:rgba(242,241,236,.56);
  min-width:56px;
  transition:color var(--dur) var(--ease);
}
.pain-item:hover .pain-num{color:var(--accent);}
.pain-text{font-size:17px;line-height:1.6;font-weight:500;}

/* ============ 方案卡片 ============ */
.solution-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:24px;
  align-items:stretch;
}
.card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r);
  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-hover);border-color:#CFCBBE;}
.card-main{
  grid-column:span 6;
  display:flex;
  flex-direction:column;
  overflow:hidden;
}
.card-main .thumb{
  aspect-ratio:16/10;
  background:var(--paper-2);
  overflow:hidden;
}
.card-main .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 600ms var(--ease);}
.card-main:hover .thumb img{transform:scale(1.03);}
.card-main .body{padding:28px;display:flex;flex-direction:column;gap:14px;flex:1 1 auto;}
.card-title{font-size:22px;font-weight:700;line-height:1.3;letter-spacing:-0.01em;}
.card-desc{font-size:15px;line-height:1.78;color:var(--muted);}
.ticks{display:flex;flex-direction:column;gap:8px;margin-top:2px;}
.ticks li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:14px;
  color:var(--muted);
  line-height:1.7;
}
.ticks i{color:var(--accent-deep);font-size:12px;margin-top:6px;flex:0 0 auto;}
.card-side{
  grid-column:span 6;
  display:grid;
  grid-template-rows:1fr 1fr;
  gap:24px;
}
.card-narrow{
  display:flex;
  gap:20px;
  padding:26px 28px;
  align-items:flex-start;
}
.num-badge{
  flex:0 0 auto;
  width:40px;height:40px;
  border-radius:var(--r-sm);
  background:var(--paper-2);
  display:grid;place-items:center;
  font-family:var(--num);
  font-size:18px;
  font-weight:700;
  color:var(--accent-deep);
}
.card-narrow .narrow-body{display:flex;flex-direction:column;gap:10px;}
.card-narrow .card-title{font-size:19px;}
.card-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--ink);
  margin-top:auto;padding-top:4px;
  transition:color var(--dur) var(--ease);
}
.card-narrow:hover .card-link,.card-main:hover .card-link{color:var(--accent-deep);}
.card-link i{font-size:11px;}

/* ============ 数据条带 ============ */
.stats{background:var(--paper-2);padding:56px 0;}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  align-items:center;
}
.stat{
  padding:8px 24px;
  text-align:left;
}
.stat + .stat{border-left:1px solid var(--line);}
.stat-num{
  font-family:var(--num);
  font-size:clamp(44px,5vw,64px);
  font-weight:700;
  line-height:1;
  letter-spacing:-0.01em;
  color:var(--ink);
  display:flex;
  align-items:baseline;
  gap:6px;
}
.stat-num small{font-size:14px;font-family:var(--sans);font-weight:500;color:var(--muted);letter-spacing:0;}
.stat-label{margin-top:10px;font-size:12px;letter-spacing:.04em;color:var(--muted);}

/* ============ CMS 最新信息 ============ */
.cms-grid{
  display:grid;
  grid-template-columns:1.15fr 1fr;
  gap:32px;
  align-items:start;
}
.cms-main{
  display:block;
  position:relative;
  border-radius:var(--r);
  overflow:hidden;
  border:1px solid var(--line);
  background:#fff;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.cms-main:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.cms-main .thumb{
  position:relative;
  aspect-ratio:16/10;
  background:var(--paper-2);
  overflow:hidden;
}
.cms-main .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 600ms var(--ease);}
.cms-main:hover .thumb img{transform:scale(1.03);}
.cms-main .thumb::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,21,18,0) 35%,rgba(14,21,18,.72) 100%);
}
.cms-main .thumb .overlay{
  position:absolute;
  left:24px;right:24px;bottom:20px;
  z-index:2;
  color:var(--light);
}
.cms-main .thumb .overlay .meta{display:flex;align-items:center;gap:10px;margin-bottom:10px;flex-wrap:wrap;}
.cms-main .thumb .overlay .meta time{font-size:12px;letter-spacing:.03em;color:rgba(242,241,236,.8);font-family:var(--num);}
.cms-main .thumb .overlay h3{font-size:20px;font-weight:700;line-height:1.4;color:#fff;}
.cms-main .main-summary{padding:20px 24px 24px;font-size:14px;line-height:1.78;color:var(--muted);}
.cms-list{
  display:flex;
  flex-direction:column;
  border-top:1px solid var(--line);
}
.cms-item{
  display:block;
  padding:20px 4px;
  border-bottom:1px solid var(--line);
  transition:background var(--dur) var(--ease),padding-left var(--dur) var(--ease);
}
.cms-item:hover{background:#fff;padding-left:12px;}
.cms-item .meta{
  display:flex;align-items:center;gap:10px;
  margin-bottom:8px;flex-wrap:wrap;
}
.cms-item .meta time{font-size:12px;color:var(--muted);font-family:var(--num);letter-spacing:.03em;}
.cms-item h3{
  font-size:17px;font-weight:600;line-height:1.5;
  transition:color var(--dur) var(--ease);
}
.cms-item:hover h3{color:var(--accent-deep);}
.cms-item p{
  margin-top:6px;
  font-size:13px;line-height:1.7;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-empty{
  border:1px dashed var(--line);
  border-radius:var(--r);
  padding:56px 24px;
  text-align:center;
  color:var(--muted);
  background:#fff;
}
.cms-empty i{font-size:26px;color:#B9BEB8;display:block;margin-bottom:12px;}
.cms-empty strong{display:block;font-size:16px;color:var(--ink);font-weight:600;margin-bottom:6px;}
.cms-empty span{font-size:13px;}
.cms-empty-inline{font-size:13px;color:var(--muted);padding:16px 4px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:820px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:22px 4px;
  text-align:left;
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  color:var(--ink);
  transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:var(--accent-deep);}
.faq-icon{
  flex:0 0 auto;
  width:22px;height:22px;
  position:relative;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--accent-deep);
  border-radius:1px;
  transition:transform 320ms var(--ease),opacity 320ms var(--ease);
}
.faq-icon::before{left:0;top:10px;width:22px;height:2px;}
.faq-icon::after{left:10px;top:0;width:2px;height:22px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 320ms var(--ease);
}
.faq-a p{
  padding:0 4px 24px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
  max-width:720px;
}

/* ============ CTA 横条 ============ */
.cta-band{background:var(--ink);color:var(--light);padding:56px 0;}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}
.cta-title{font-size:clamp(20px,2.2vw,26px);font-weight:800;line-height:1.3;letter-spacing:-0.01em;}
.cta-note{margin-top:8px;font-size:13px;color:rgba(242,241,236,.72);letter-spacing:.02em;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(242,241,236,.72);padding:72px 0 0;}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo-text{color:var(--light);}
.footer-brand .logo-mark{border-color:rgba(242,241,236,.6);}
.footer-desc{margin-top:18px;font-size:13px;line-height:1.8;max-width:280px;color:rgba(242,241,236,.56);}
.footer-contact{margin-top:18px;font-size:13px;line-height:2;color:rgba(242,241,236,.72);}
.footer-contact i{width:16px;color:var(--accent);margin-right:8px;font-size:12px;}
.footer-col h4{
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--light);
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{
  font-size:13px;
  color:rgba(242,241,236,.56);
  transition:color var(--dur) var(--ease);
}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12px;
  color:rgba(242,241,236,.56);
  letter-spacing:.02em;
}
.footer-bottom a{color:rgba(242,241,236,.72);}
.footer-bottom a:hover{color:var(--accent);}
.to-top{display:inline-flex;align-items:center;gap:8px;font-size:12px;color:rgba(242,241,236,.72);transition:color var(--dur) var(--ease);}
.to-top:hover{color:var(--accent);}

/* ============ 弹层 ============ */
.modal{
  position:fixed;
  inset:0;
  z-index:200;
  display:none;
  align-items:center;
  justify-content:center;
  padding:24px;
}
.modal.is-open{display:flex;}
.modal-overlay{
  position:absolute;
  inset:0;
  background:rgba(14,21,18,.55);
  backdrop-filter:blur(4px);
}
.modal-panel{
  position:relative;
  width:100%;
  max-width:520px;
  max-height:calc(100vh - 48px);
  overflow-y:auto;
  background:#fff;
  border-radius:var(--r);
  padding:32px;
  box-shadow:0 30px 60px -30px rgba(14,21,18,.5);
  animation:modalIn 200ms var(--ease);
}
@keyframes modalIn{from{opacity:0;transform:scale(.98);}to{opacity:1;transform:scale(1);}}
.modal-close{
  position:absolute;
  top:8px;right:8px;
  width:44px;height:44px;
  display:grid;place-items:center;
  color:var(--muted);
  border-radius:var(--r-sm);
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.modal-close:hover{color:var(--ink);background:var(--paper-2);}
.modal-panel h3{font-size:22px;font-weight:800;line-height:1.3;}
.modal-panel .modal-sub{margin-top:8px;font-size:13px;color:var(--muted);line-height:1.7;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px;}
.field{display:flex;flex-direction:column;gap:6px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13px;font-weight:500;color:var(--ink);}
.field label .req{color:var(--alert);margin-left:2px;}
.field input,.field select,.field textarea{
  height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  padding:0 12px;
  font-size:14px;
  background:#fff;
  outline:none;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.field textarea{height:auto;min-height:92px;padding:10px 12px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--ink);
  box-shadow:0 0 0 2px var(--accent);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--alert);}
.field .err{font-size:12px;color:var(--alert);display:none;}
.field.has-error .err{display:block;}
.form-consent{
  grid-column:1 / -1;
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:12px;
  line-height:1.7;
  color:var(--muted);
}
.form-consent input{margin-top:4px;width:15px;height:15px;accent-color:var(--accent-deep);flex:0 0 auto;}
.form-foot{grid-column:1 / -1;display:flex;flex-direction:column;gap:12px;margin-top:4px;}
.form-foot .btn{width:100%;height:48px;}
.form-success{
  display:none;
  margin-top:16px;
  padding:12px 14px;
  border-radius:var(--r-sm);
  background:#E8F6EC;
  border:1px solid #BEE3C8;
  color:#1F6B37;
  font-size:13px;
  line-height:1.7;
}
.form-success.is-visible{display:block;}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(10px);transition:opacity 320ms var(--ease),transform 320ms var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .hero-copy{padding-right:16px;}
}
@media (max-width:1024px){
  .section{padding:72px 0;}
  .hero{padding:48px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-copy,.hero-media{grid-column:1 / -1;padding-right:0;}
  .hero-media{order:-1;}
  .hero-media .frame{aspect-ratio:16/10;}
  .hero-sub{max-width:none;}
  .solution-grid{grid-template-columns:1fr;}
  .card-main,.card-side{grid-column:1 / -1;}
  .cms-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-inner .btn{width:auto;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .header-top{height:56px;}
  .header-top-inner{height:56px;}
  .search-box{display:none;}
  .nav-toggle{display:flex;}
  .header-nav{padding:0;border-top:1px solid var(--line);}
  .header-nav{display:none;}
  .header-nav.is-open{
    display:block;
    position:absolute;
    top:100%;left:0;right:0;
    background:var(--paper);
    border-bottom:1px solid var(--line);
    padding:14px 0 20px;
    box-shadow:0 18px 30px -22px rgba(14,21,18,.4);
  }
  .nav-inner{flex-direction:column;align-items:stretch;gap:12px;}
  .channel-tabs{
    flex-direction:column;
    align-items:stretch;
    overflow:visible;
    padding-right:0;
    -webkit-mask-image:none;
    mask-image:none;
    gap:4px;
  }
  .tab{width:100%;height:44px;border-radius:var(--r-sm);justify-content:flex-start;}
  .nav-cta{display:none;}
  .pains{padding:56px 0;}
  .pain-item{gap:18px;padding:20px 4px;}
  .pain-num{font-size:26px;min-width:44px;}
  .pain-text{font-size:16px;}
  .stats{padding:40px 0;}
  .stats-grid{grid-template-columns:1fr 1fr;row-gap:28px;}
  .stat{padding:0 16px;}
  .stat+.stat{border-left:0;}
  .stat:nth-child(even){border-left:1px solid var(--line);}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:28px;}
  .card-main .body,.card-narrow{padding:22px;}
  .faq-q{font-size:16px;padding:18px 2px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px;}
  .site-footer{padding:56px 0 0;}
  .modal-panel{padding:24px;}
  .form-grid{grid-template-columns:1fr;}
}
@media (max-width:480px){
  .hero h1{font-size:32px;line-height:1.15;}
  .hero-sub{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-trust{font-size:11px;}
  .logo-text{font-size:18px;}
  .logo-sub{display:none;}
  .stat-num{font-size:40px;}
  .cms-main .thumb .overlay h3{font-size:16px;}
  .card-title{font-size:20px;}
  .cta-inner .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
}

/* roulang page: article */
:root{
  --ink:#0E1512;
  --ink-soft:#1B2420;
  --accent:#C8F24B;
  --accent-deep:#2E6B57;
  --paper:#F7F6F2;
  --paper-2:#ECEAE2;
  --line:#DBD8CE;
  --muted:#5D655F;
  --alert:#C0392B;
  --radius:4px;
  --radius-sm:2px;
  --shadow-hover:0 14px 30px -18px rgba(14,21,18,.28);
  --container:1240px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",sans-serif;
  font-size:16px;
  line-height:1.78;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,select,textarea{font-family:inherit;font-size:16px;color:var(--ink);}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.num{font-family:"Barlow Condensed","Oswald","PingFang SC",sans-serif;font-variant-numeric:tabular-nums;}

/* ============ header ============ */
.site-header{
  position:relative;
  z-index:60;
  background:rgba(247,246,242,.94);
  backdrop-filter:saturate(140%) blur(8px);
}
.header-top{
  border-bottom:1px solid var(--line);
  transition:height .25s var(--ease);
}
.header-top-inner{
  height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.logo{display:inline-flex;align-items:center;gap:10px;}
.logo-mark{
  width:22px;height:22px;
  border-radius:50%;
  border:2px solid var(--ink);
  position:relative;
  flex:0 0 auto;
}
.logo-mark::after{
  content:"";position:absolute;inset:5px;border-radius:50%;
  background:var(--accent);
}
.logo-text{
  font-size:21px;
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.1;
  display:inline-flex;
  align-items:baseline;
  gap:8px;
}
.logo-sub{
  font-size:11px;
  font-weight:500;
  letter-spacing:.14em;
  color:var(--muted);
  border-left:1px solid var(--line);
  padding-left:8px;
}
.header-actions{display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;
  align-items:center;
  border:1px solid var(--line);
  background:#fff;
  border-radius:var(--radius-sm);
  height:40px;
  padding:0 4px 0 12px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box:focus-within{border-color:var(--ink);box-shadow:0 0 0 2px rgba(200,242,75,.85);}
.search-box input{
  border:0;outline:none;background:transparent;
  width:196px;height:36px;font-size:14px;
}
.search-box input::placeholder{color:#9AA19B;}
.search-box button{
  width:32px;height:32px;
  display:grid;place-items:center;
  color:var(--muted);border-radius:var(--radius-sm);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.search-box button:hover{background:var(--paper-2);color:var(--ink);}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  border:1px solid transparent;
  transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-primary{background:var(--ink);color:#F2F1EC;}
.btn-primary:hover{background:var(--ink-soft);transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-accent{background:var(--accent);color:var(--ink);}
.btn-accent:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--ink);transform:translateY(-2px);}
.btn-dark{background:var(--ink);color:#F2F1EC;height:38px;padding:0 18px;font-size:14px;}
.btn-dark:hover{background:var(--accent-deep);}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:#fff;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);transition:transform .2s var(--ease),opacity .2s var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.header-nav{
  background:var(--paper);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.header-nav.is-stuck{
  position:sticky;
  top:0;
  z-index:55;
  box-shadow:0 4px 14px -10px rgba(14,21,18,.45);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:56px;
}
.channel-tabs{
  display:flex;
  align-items:center;
  gap:8px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
  padding:8px 0;
}
.channel-tabs::-webkit-scrollbar{display:none;}
.tab{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 16px;
  border-radius:999px;
  font-size:14px;
  font-weight:500;
  color:var(--muted);
  background:transparent;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.tab:hover{background:var(--paper-2);color:var(--ink);}
.tab.active{background:var(--accent);color:var(--ink);font-weight:600;}
.nav-cta{flex:0 0 auto;}

/* ============ page head ============ */
.article-head{
  background:var(--paper);
  padding:36px 0 28px;
  border-bottom:1px solid var(--line);
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:20px;
}
.breadcrumb a{color:var(--muted);border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease);}
.breadcrumb a:hover{color:var(--ink);border-bottom-color:var(--accent);}
.breadcrumb .sep{color:#B4B8B0;}
.breadcrumb .current{color:var(--ink);font-weight:500;}
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:var(--radius-sm);
  background:var(--accent-deep);
  color:#F2F1EC;
  font-size:12px;
  font-weight:500;
  letter-spacing:.04em;
}
.article-head h1{
  margin:16px 0 18px;
  font-size:clamp(28px,3.4vw,44px);
  font-weight:900;
  line-height:1.2;
  letter-spacing:-.02em;
  max-width:900px;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 18px;
  font-size:13px;
  color:var(--muted);
}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:#B4B8B0;}
.meta-row i{color:var(--accent-deep);margin-right:6px;}

/* ============ layout ============ */
.page-body{padding:56px 0 88px;}
.layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:56px;
  align-items:start;
}
.article-main{min-width:0;}
.hero-figure{
  margin-bottom:32px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--paper-2);
  aspect-ratio:16/9;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}

.article-body{max-width:760px;font-size:16px;line-height:1.85;}
.article-body p{margin:0 0 20px;color:#1F2723;}
.article-body h2{
  position:relative;
  margin:44px 0 18px;
  padding-left:16px;
  font-size:clamp(22px,2.1vw,28px);
  font-weight:800;
  line-height:1.35;
  letter-spacing:-.01em;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:6px;
  width:3px;height:20px;
  background:var(--accent);
  border-radius:2px;
}
.article-body h3{margin:32px 0 12px;font-size:20px;font-weight:700;line-height:1.4;}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:0;}
.article-body ul li,.article-body ol li{
  position:relative;
  padding-left:22px;
  margin-bottom:10px;
  line-height:1.8;
  color:#1F2723;
}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:2px;top:12px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--accent-deep);
}
.article-body ol{counter-reset:lit;}
.article-body ol li{counter-increment:lit;padding-left:26px;}
.article-body ol li::before{
  content:counter(lit) ".";
  position:absolute;
  left:0;top:0;
  font-weight:700;
  color:var(--accent-deep);
  font-size:14px;
}
.article-body blockquote{
  margin:0 0 24px;
  padding:18px 22px;
  background:var(--paper-2);
  border-left:3px solid var(--accent);
  border-radius:0 var(--radius) var(--radius) 0;
  color:#2A332E;
  font-size:15px;
  line-height:1.8;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--radius);margin:8px 0 24px;width:100%;height:auto;}
.article-body figure{margin:0 0 24px;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body a{color:var(--accent-deep);border-bottom:1px solid rgba(46,107,87,.35);}
.article-body a:hover{border-bottom-color:var(--accent-deep);}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:0 0 24px;
  font-size:14px;
  background:transparent;
}
.article-body th,.article-body td{
  border:1px solid var(--line);
  padding:10px 14px;
  text-align:left;
  vertical-align:top;
}
.article-body th{background:var(--paper-2);font-weight:600;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

.empty-state{
  border:1px dashed var(--line);
  border-radius:var(--radius);
  background:#fff;
  padding:64px 28px;
  text-align:center;
}
.empty-state i{font-size:32px;color:var(--accent-deep);}
.empty-state h2{margin:18px 0 8px;font-size:22px;font-weight:800;}
.empty-state p{color:var(--muted);font-size:14px;margin-bottom:24px;}

/* ============ sidebar ============ */
.sidebar{position:sticky;top:88px;}
.side-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px;
  margin-bottom:20px;
}
.side-title{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:15px;
  font-weight:800;
  letter-spacing:.01em;
  margin-bottom:18px;
}
.side-title::before{content:"";width:3px;height:16px;background:var(--accent);border-radius:2px;}
.related-item{
  display:block;
  padding:14px 0;
  border-bottom:1px solid var(--line);
  transition:transform .18s var(--ease);
}
.related-item:last-child{border-bottom:0;padding-bottom:0;}
.related-item:first-of-type{padding-top:0;}
.related-item:hover{transform:translateY(-2px);}
.related-item .r-cat{
  display:inline-block;
  font-size:12px;
  font-weight:500;
  color:var(--accent-deep);
  background:rgba(46,107,87,.08);
  border-radius:var(--radius-sm);
  padding:2px 8px;
  margin-bottom:8px;
}
.related-item h3{
  font-size:15px;
  font-weight:700;
  line-height:1.55;
  transition:color .18s var(--ease);
}
.related-item:hover h3{color:var(--accent-deep);}
.related-item p{
  margin-top:6px;
  font-size:13px;
  color:var(--muted);
  line-height:1.65;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-item time{display:block;margin-top:8px;font-size:12px;color:#9AA19B;}
.side-card .btn{width:100%;margin-top:18px;}

.back-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  margin-top:44px;
  padding-top:28px;
  border-top:1px solid var(--line);
}
.link-underline{
  position:relative;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.link-underline::after{
  content:"";
  position:absolute;
  left:0;bottom:-3px;
  width:0;height:2px;
  background:var(--accent);
  transition:width .24s var(--ease);
}
.link-underline:hover::after{width:100%;}

/* ============ cta strip ============ */
.cta-strip{
  background:var(--ink);
  color:#F2F1EC;
  padding:48px 0;
}
.cta-strip-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}
.cta-strip h2{
  font-size:clamp(22px,2.4vw,30px);
  font-weight:800;
  line-height:1.3;
  letter-spacing:-.01em;
}
.cta-strip p{
  margin-top:8px;
  font-size:13px;
  color:rgba(242,241,236,.72);
}
.cta-strip .btn{flex:0 0 auto;}

/* ============ footer ============ */
.site-footer{background:var(--ink);color:#F2F1EC;padding:64px 0 0;}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
}
.site-footer .logo-text{color:#F2F1EC;}
.site-footer .logo-mark{border-color:#F2F1EC;}
.site-footer .logo-sub{color:rgba(242,241,236,.56);border-left-color:rgba(242,241,236,.2);}
.footer-desc{
  margin:16px 0 20px;
  font-size:13px;
  line-height:1.8;
  color:rgba(242,241,236,.72);
  max-width:320px;
}
.footer-contact div{
  font-size:13px;
  color:rgba(242,241,236,.56);
  margin-bottom:8px;
  display:flex;
  align-items:flex-start;
  gap:8px;
  line-height:1.7;
}
.footer-contact i{color:var(--accent);margin-top:4px;}
.footer-col h4{
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  color:#F2F1EC;
  margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{
  font-size:13px;
  color:rgba(242,241,236,.72);
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-col ul a:hover{color:var(--accent);border-bottom-color:var(--accent);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:12px;
  color:rgba(242,241,236,.56);
}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:rgba(242,241,236,.72);
  transition:color .2s var(--ease);
}
.to-top:hover{color:var(--accent);}

/* ============ modal ============ */
.modal{
  position:fixed;
  inset:0;
  z-index:200;
  display:none;
  align-items:center;
  justify-content:center;
  padding:20px;
}
.modal.is-open{display:flex;}
.modal-mask{
  position:absolute;
  inset:0;
  background:rgba(14,21,18,.55);
  backdrop-filter:blur(4px);
}
.modal-panel{
  position:relative;
  width:100%;
  max-width:520px;
  background:#fff;
  border-radius:var(--radius);
  padding:32px;
  max-height:90vh;
  overflow-y:auto;
  animation:modalIn .2s var(--ease);
}
@keyframes modalIn{from{opacity:0;transform:scale(.98);}to{opacity:1;transform:scale(1);}}
.modal-close{
  position:absolute;
  top:8px;right:8px;
  width:44px;height:44px;
  display:grid;place-items:center;
  color:var(--muted);
  border-radius:var(--radius-sm);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.modal-close:hover{background:var(--paper-2);color:var(--ink);}
.modal-panel h2{font-size:22px;font-weight:800;line-height:1.35;}
.modal-panel .modal-sub{margin-top:8px;font-size:13px;color:var(--muted);line-height:1.7;}
.form-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
  margin-top:24px;
}
.field{display:flex;flex-direction:column;gap:6px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13px;font-weight:600;color:var(--ink-soft);}
.field .req{color:var(--alert);margin-left:2px;}
.field input,.field select,.field textarea{
  width:100%;
  height:44px;
  padding:0 12px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:#fff;
  outline:none;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{height:96px;padding:10px 12px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--ink);
  box-shadow:0 0 0 2px var(--accent);
}
.field input:invalid:not(:placeholder-shown){border-color:var(--alert);}
.check-row{
  grid-column:1 / -1;
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:12px;
  color:var(--muted);
  line-height:1.6;
}
.check-row input{width:16px;height:16px;margin-top:3px;flex:0 0 auto;accent-color:var(--accent-deep);}
.form-actions{grid-column:1 / -1;display:flex;gap:12px;margin-top:4px;}
.form-actions .btn{flex:1;}
.form-status{
  grid-column:1 / -1;
  display:none;
  font-size:13px;
  padding:10px 12px;
  border-radius:var(--radius-sm);
  background:rgba(46,107,87,.1);
  color:var(--accent-deep);
  border:1px solid rgba(46,107,87,.25);
}
.form-status.is-show{display:block;}

/* ============ reveal ============ */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .32s var(--ease),transform .32s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ============ responsive ============ */
@media (max-width:1280px){
  .search-box input{width:150px;}
}
@media (max-width:1024px){
  .layout{grid-template-columns:minmax(0,1fr);gap:40px;}
  .sidebar{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .nav-cta{display:none;}
  .search-box input{width:130px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .header-top-inner{height:56px;}
  .search-box{display:none;}
  .nav-toggle{display:flex;}
  .header-actions .btn-primary{display:none;}
  .header-nav{
    max-height:0;
    overflow:hidden;
    border-bottom:0;
    transition:max-height .28s var(--ease);
  }
  .header-nav.is-open{max-height:360px;border-bottom:1px solid var(--line);}
  .nav-inner{height:auto;flex-direction:column;align-items:stretch;gap:12px;padding:12px 20px 16px;}
  .channel-tabs{flex-direction:column;align-items:stretch;gap:4px;overflow:visible;padding:0;}
  .tab{height:42px;justify-content:flex-start;border-radius:var(--radius-sm);padding:0 14px;}
  .nav-cta{display:inline-flex;width:100%;height:42px;}
  .article-head{padding:24px 0 22px;}
  .page-body{padding:36px 0 56px;}
  .cta-strip-inner{flex-direction:column;align-items:flex-start;gap:20px;}
  .cta-strip .btn{width:100%;}
  .form-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .article-body h2{margin-top:34px;}
}
@media (max-width:520px){
  .article-head h1{font-size:26px;}
  .hero-figure{aspect-ratio:4/3;}
  .btn{height:46px;}
  .modal-panel{padding:24px;}
  .article-body{font-size:15.5px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --ink:#0E1512;
  --ink-soft:#1B2420;
  --accent:#C8F24B;
  --accent-deep:#2E6B57;
  --paper:#F7F6F2;
  --paper-2:#ECEAE2;
  --line:#DBD8CE;
  --muted:#5D655F;
  --alert:#C0392B;
  --radius-card:4px;
  --radius-btn:2px;
  --shadow-hover:0 14px 30px -18px rgba(14,21,18,.28);
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Barlow Condensed","Oswald","PingFang SC",var(--font-sans);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.78;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;cursor:pointer;border:none;background:none;}
input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,figure{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent-deep);outline-offset:3px;}
::selection{background:var(--accent);color:var(--ink);}

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

/* ---------- 按钮与徽章 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  border:1px solid transparent;font-size:15px;font-weight:600;
  letter-spacing:0;white-space:nowrap;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--accent);color:var(--ink);border-color:var(--accent);}
.btn-primary:hover{background:#b9e43c;transform:translateY(-1px);box-shadow:0 10px 22px -16px rgba(14,21,18,.6);}
.btn-primary:active{transform:translateY(0);}
.btn-dark{background:var(--ink);color:#F2F1EC;border-color:var(--ink);}
.btn-dark:hover{background:var(--ink-soft);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--ink);background:#fff;}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

.badge{
  display:inline-block;font-size:12px;font-weight:500;letter-spacing:.04em;
  padding:3px 10px;border-radius:2px;background:var(--accent-deep);color:#fff;
}
.badge-light{background:var(--paper-2);color:var(--ink-soft);}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:var(--paper);}
.header-top{
  max-height:82px;overflow:hidden;
  border-bottom:1px solid var(--line);
  transition:max-height .32s ease,opacity .24s ease,border-color .24s ease;
}
.site-header.is-scrolled .header-top{max-height:0;opacity:0;border-color:transparent;}
.header-top-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.logo{display:inline-flex;align-items:center;gap:10px;}
.logo-mark{
  position:relative;width:22px;height:22px;border-radius:50%;
  background:var(--accent);flex:0 0 auto;
}
.logo-mark::after{
  content:"";position:absolute;inset:6px 4px;border:2px solid var(--ink);border-radius:50%;
}
.logo-text{font-size:20px;font-weight:900;letter-spacing:-.02em;line-height:1;}
.logo-sub{
  font-size:11px;font-weight:500;letter-spacing:.04em;color:var(--muted);
  margin-left:8px;padding-left:8px;border-left:1px solid var(--line);
  vertical-align:2px;
}
.header-actions{display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;height:40px;width:230px;
  border:1px solid var(--line);border-radius:2px;background:#fff;overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.search-box:focus-within{border-color:var(--ink);box-shadow:0 0 0 2px rgba(200,242,75,.55);}
.search-box input{
  flex:1;min-width:0;height:100%;border:none;background:transparent;
  padding:0 12px;font-size:14px;outline:none;
}
.search-box input::placeholder{color:#98a09a;}
.search-box button{
  width:40px;height:100%;display:grid;place-items:center;
  color:var(--muted);transition:color .18s ease,background .18s ease;
}
.search-box button:hover{color:var(--ink);background:var(--paper-2);}
.nav-toggle{
  display:none;width:44px;height:44px;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;border-radius:2px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.header-nav{
  background:var(--paper);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled .header-nav{
  border-bottom-color:var(--line);
  box-shadow:0 4px 14px -10px rgba(14,21,18,.45);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:56px;}
.channel-tabs{
  display:flex;align-items:center;gap:8px;
  overflow-x:auto;scrollbar-width:none;padding:6px 0;
}
.channel-tabs::-webkit-scrollbar{display:none;}
.tab{
  padding:8px 18px;border-radius:999px;font-size:15px;color:var(--muted);
  white-space:nowrap;transition:background .18s ease,color .18s ease;
}
.tab:hover{background:var(--paper-2);color:var(--ink);}
.tab.active{background:var(--accent);color:var(--ink);font-weight:600;}
.nav-cta{height:38px;padding:0 18px;font-size:14px;}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);padding:20px 0 0;
}
.breadcrumb a{transition:color .18s ease;}
.breadcrumb a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb span[aria-current]{color:var(--ink);font-weight:600;}

/* ---------- 分类首屏 ---------- */
.cat-hero{padding:24px 0 8px;}
.cat-hero-grid{
  display:grid;grid-template-columns:1.35fr 1fr;gap:56px;align-items:center;
  padding:28px 0 44px;
}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--accent-deep);
  margin-bottom:16px;
}
.kicker::before{content:"";width:3px;height:14px;background:var(--accent);border-radius:1px;}
.cat-hero h1{
  font-size:clamp(32px,4.1vw,52px);
  line-height:1.14;font-weight:900;letter-spacing:-.02em;
}
.hl{box-shadow:inset 0 -.26em 0 var(--accent);}
.cat-hero-text > p{
  margin-top:20px;font-size:17px;color:var(--muted);max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;
  margin-top:24px;font-size:13px;color:var(--muted);
}
.hero-meta i{color:var(--accent-deep);margin-right:5px;}
.hero-meta .divider{width:1px;height:12px;background:var(--line);display:inline-block;}
.cat-hero-media{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid rgba(14,21,18,.12);background:var(--paper-2);
}
.cat-hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s ease;}
.cat-hero-media:hover img{transform:scale(1.03);}

/* ---------- 主体布局 ---------- */
.section{padding:56px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:32px;}
.section-head h2{font-size:clamp(26px,3vw,38px);font-weight:800;letter-spacing:-.01em;line-height:1.2;}
.section-head p{font-size:15px;color:var(--muted);margin-top:8px;max-width:620px;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--ink);position:relative;padding-bottom:2px;
}
.text-link::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;
  background:var(--accent-deep);transform:scaleX(0);transform-origin:left;
  transition:transform .24s ease;
}
.text-link:hover::after{transform:scaleX(1);}

.index-layout{display:grid;grid-template-columns:236px 1fr;gap:48px;align-items:start;}
.sticky-index{
  position:sticky;top:110px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;
}
.index-label{
  font-size:12px;font-weight:600;letter-spacing:.06em;
  color:var(--muted);margin-bottom:14px;
}
.index-list li + li{margin-top:4px;}
.index-list a{
  display:block;padding:8px 10px;border-radius:2px;font-size:14px;
  color:var(--ink-soft);border-left:2px solid transparent;
  transition:background .18s ease,border-color .18s ease,color .18s ease;
}
.index-list a:hover{background:var(--paper-2);border-left-color:var(--accent);}
.index-cta{
  display:block;margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;font-weight:600;color:var(--accent-deep);
}
.index-cta:hover{color:var(--ink);}

.entry-group + .entry-group{margin-top:56px;scroll-margin-top:110px;}
.entry-group{scroll-margin-top:110px;}
.group-head{
  display:flex;align-items:flex-start;gap:16px;
  padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:24px;
}
.group-no{
  font-family:var(--font-num);font-size:34px;font-weight:700;line-height:1;
  color:var(--accent-deep);flex:0 0 auto;
}
.group-head h2{font-size:clamp(20px,2vw,26px);font-weight:800;letter-spacing:-.01em;line-height:1.3;}
.group-head p{font-size:14px;color:var(--muted);margin-top:4px;}
.entry-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.entry-card{
  display:flex;flex-direction:column;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#cfcbc0;}
.entry-media{overflow:hidden;background:var(--paper-2);}
.entry-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease;}
.entry-card:hover .entry-media img{transform:scale(1.03);}
.entry-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.entry-body h3{font-size:20px;font-weight:700;line-height:1.35;letter-spacing:-.01em;}
.entry-body p{font-size:14.5px;color:var(--muted);line-height:1.75;}
.entry-foot{
  margin-top:auto;padding-top:12px;display:flex;align-items:center;
  justify-content:space-between;font-size:12.5px;color:var(--muted);
  border-top:1px solid var(--line);
}
.entry-foot .more{font-weight:600;color:var(--accent-deep);transition:color .18s ease;}
.entry-card:hover .entry-foot .more{color:var(--ink);}

/* ---------- 深色要点条 ---------- */
.dark-strip{
  background:var(--ink);color:#F2F1EC;border-radius:var(--radius-card);
  padding:44px 48px;
}
.dark-strip .strip-label{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;
  letter-spacing:.06em;color:var(--accent);margin-bottom:16px;
}
.dark-strip .strip-label::before{content:"";width:3px;height:14px;background:var(--accent);border-radius:1px;}
.dark-strip h2{font-size:clamp(24px,2.6vw,34px);font-weight:800;line-height:1.25;letter-spacing:-.01em;max-width:720px;}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-top:36px;}
.step{border-top:1px solid rgba(255,255,255,.16);padding-top:18px;}
.step-no{
  font-family:var(--font-num);font-size:15px;font-weight:700;
  letter-spacing:.08em;color:var(--accent);
}
.step h3{font-size:17px;font-weight:700;margin:8px 0 8px;color:#F2F1EC;}
.step p{font-size:14px;color:rgba(242,241,236,.72);line-height:1.75;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;font-size:17px;font-weight:600;line-height:1.5;
  transition:color .18s ease;
}
.faq-q:hover{color:var(--accent-deep);}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;display:grid;place-items:center;
  color:var(--accent-deep);font-size:15px;transition:transform .3s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .32s ease;
}
.faq-a p{
  padding:0 0 24px;font-size:15px;color:var(--muted);line-height:1.85;max-width:780px;
}

/* ---------- CTA 横条 ---------- */
.cta-bar{
  background:var(--ink);color:#F2F1EC;border-radius:var(--radius-card);
  padding:42px 48px;display:flex;align-items:center;justify-content:space-between;gap:36px;
}
.cta-bar h2{font-size:clamp(22px,2.4vw,30px);font-weight:800;line-height:1.25;letter-spacing:-.01em;}
.cta-bar p{font-size:14px;color:rgba(242,241,236,.72);margin-top:8px;}
.cta-bar .btn{flex:0 0 auto;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#F2F1EC;margin-top:80px;padding:64px 0 24px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;}
.site-footer .logo-text{color:#F2F1EC;font-size:19px;}
.site-footer .logo-sub{color:rgba(242,241,236,.6);border-left-color:rgba(255,255,255,.18);}
.footer-desc{
  font-size:14px;color:rgba(242,241,236,.72);line-height:1.8;
  margin:18px 0 20px;max-width:330px;
}
.footer-contact div{
  display:flex;align-items:flex-start;gap:8px;font-size:13px;
  color:rgba(242,241,236,.56);line-height:1.7;
}
.footer-contact div + div{margin-top:8px;}
.footer-contact i{margin-top:5px;color:var(--accent);}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:.02em;}
.footer-col li + li{margin-top:10px;}
.footer-col a{
  font-size:14px;color:rgba(242,241,236,.72);
  transition:color .18s ease;
}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(242,241,236,.56);
}
.to-top{display:inline-flex;align-items:center;gap:6px;color:rgba(242,241,236,.72);transition:color .18s ease;}
.to-top:hover{color:var(--accent);}

/* ---------- 表单弹层 ---------- */
.modal{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;padding:20px;}
.modal.open{display:flex;}
.modal-mask{
  position:absolute;inset:0;background:rgba(14,21,18,.58);
  backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);
  animation:fadeIn .2s ease;
}
.modal-panel{
  position:relative;width:100%;max-width:520px;max-height:90vh;overflow:auto;
  background:#fff;border-radius:var(--radius-card);padding:32px;
  animation:panelIn .2s ease;
}
@keyframes fadeIn{from{opacity:0;}to{opacity:1;}}
@keyframes panelIn{from{opacity:0;transform:scale(.98);}to{opacity:1;transform:scale(1);}}
.modal-close{
  position:absolute;top:12px;right:12px;width:44px;height:44px;
  display:grid;place-items:center;border-radius:2px;color:var(--muted);
  transition:background .18s ease,color .18s ease;
}
.modal-close:hover{background:var(--paper-2);color:var(--ink);}
.modal-panel h2{font-size:24px;font-weight:800;letter-spacing:-.01em;}
.modal-desc{font-size:14px;color:var(--muted);margin-top:8px;margin-bottom:22px;}
.cform{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{display:flex;flex-direction:column;gap:6px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13px;font-weight:600;color:var(--ink-soft);}
.req{color:var(--alert);margin-left:2px;}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:2px;background:#fff;
  padding:0 12px;height:44px;font-size:14.5px;outline:none;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:96px;padding:11px 12px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--ink);box-shadow:0 0 0 2px rgba(200,242,75,.6);
}
.field.invalid input,.field.invalid select{border-color:var(--alert);}
.err{font-size:12px;color:var(--alert);display:none;}
.field.invalid .err{display:block;}
.check-row{grid-column:1 / -1;display:flex;align-items:flex-start;gap:10px;font-size:12.5px;color:var(--muted);}
.check-row input{width:16px;height:16px;margin-top:4px;flex:0 0 auto;accent-color:var(--accent-deep);}
.form-note{grid-column:1 / -1;font-size:12px;color:var(--muted);line-height:1.7;}
.form-submit{grid-column:1 / -1;}
.form-submit .btn{width:100%;}
.form-success{
  grid-column:1 / -1;display:none;font-size:13.5px;color:#1f6b4d;
  background:#e8f4ee;border:1px solid #b9dfcc;border-radius:2px;padding:10px 14px;
}
.form-success.show{display:block;}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(10px);}
.reveal.in{opacity:1;transform:none;transition:opacity .32s cubic-bezier(.2,.7,.2,1),transform .32s cubic-bezier(.2,.7,.2,1);}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .index-layout{grid-template-columns:212px 1fr;gap:36px;}
}
@media (max-width:1024px){
  .cat-hero-grid{grid-template-columns:1fr;gap:32px;padding:20px 0 36px;}
  .cat-hero-media{order:-1;max-width:520px;}
  .cat-hero-media img{aspect-ratio:16/10;}
  .index-layout{grid-template-columns:1fr;gap:28px;}
  .sticky-index{
    position:static;top:auto;display:flex;align-items:center;gap:16px;
    padding:12px 16px;overflow-x:auto;scrollbar-width:none;
  }
  .sticky-index::-webkit-scrollbar{display:none;}
  .index-label{margin:0;white-space:nowrap;}
  .index-list{display:flex;gap:6px;}
  .index-list li + li{margin-top:0;}
  .index-list a{white-space:nowrap;border-left:none;border-bottom:2px solid transparent;padding:6px 10px;}
  .index-list a:hover{border-left-color:transparent;border-bottom-color:var(--accent);}
  .index-cta{display:none;}
  .steps{grid-template-columns:1fr 1fr;gap:24px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .search-box{display:none;}
  .header-actions .btn-primary{display:none;}
  .nav-toggle{display:flex;}
  .header-top-inner{height:56px;}
  .header-top{max-height:70px;}
  .header-nav{display:none;}
  .header-nav.open{display:block;}
  .nav-inner{flex-direction:column;align-items:stretch;gap:10px;padding:12px 0 16px;min-height:0;}
  .channel-tabs{flex-direction:column;align-items:stretch;overflow:visible;padding:0;}
  .tab{width:100%;text-align:center;padding:10px 14px;}
  .nav-cta{width:100%;height:44px;}
  .entry-grid{grid-template-columns:1fr;}
  .dark-strip{padding:32px 24px;}
  .steps{grid-template-columns:1fr;gap:20px;}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:32px 24px;gap:24px;}
  .cta-bar .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:44px 0;}
  .cform{grid-template-columns:1fr;}
  .modal-panel{padding:24px;}
}
@media (max-width:520px){
  .cat-hero h1{font-size:30px;}
  .hero-actions .btn{width:100%;}
  .hero-meta{font-size:12px;}
  .footer-grid{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .group-head{gap:12px;}
  .group-no{font-size:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --ink:#0E1512;
  --ink-soft:#1B2420;
  --accent:#C8F24B;
  --accent-deep:#2E6B57;
  --paper:#F7F6F2;
  --paper-2:#ECEAE2;
  --line:#DBD8CE;
  --muted:#5D655F;
  --alert:#C0392B;
  --radius:4px;
  --radius-sm:2px;
  --maxw:1240px;
  --shadow-hover:0 14px 30px -18px rgba(14,21,18,.28);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.78;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}

.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  font-size:14px;
  font-weight:600;
  letter-spacing:.01em;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--accent);color:var(--ink);border-color:var(--ink);}
.btn-dark{background:var(--ink);color:#F2F1EC;border-color:var(--ink);}
.btn-dark:hover{background:var(--ink-soft);}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--ink);}
.btn-block{width:100%;}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:var(--radius-sm);
  background:var(--accent-deep);
  color:#F2F1EC;
  font-size:12px;
  font-weight:500;
  letter-spacing:.04em;
}
.badge-soft{
  background:transparent;
  border:1px solid var(--line);
  color:var(--muted);
}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--paper);
  transition:box-shadow .25s ease;
}
.site-header.is-compact{box-shadow:0 6px 18px -14px rgba(14,21,18,.55);}
.header-top{
  max-height:80px;
  overflow:hidden;
  padding:12px 0;
  border-bottom:1px solid var(--line);
  transition:max-height .28s ease,padding .28s ease,opacity .2s ease;
}
.site-header.is-compact .header-top{max-height:0;padding-top:0;padding-bottom:0;opacity:0;border-bottom-color:transparent;}
.header-top-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:900;
  font-size:20px;
  letter-spacing:-.02em;
  color:var(--ink);
  white-space:nowrap;
}
.logo-mark{
  position:relative;
  width:20px;
  height:20px;
  border:2px solid var(--ink);
  border-radius:50%;
  flex:none;
}
.logo-mark::after{
  content:"";
  position:absolute;
  inset:4px;
  background:var(--accent);
  border-radius:50%;
}
.logo-sub{
  margin-left:6px;
  font-size:11px;
  font-weight:500;
  letter-spacing:.06em;
  color:var(--muted);
}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
}
.search-box{
  display:flex;
  align-items:center;
  height:40px;
  min-width:250px;
  padding-left:12px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:#fff;
  transition:border-color .18s ease;
}
.search-box:focus-within{border-color:var(--ink);}
.search-box input{
  flex:1;
  min-width:0;
  height:100%;
  border:0;
  outline:none;
  background:transparent;
  font-size:14px;
}
.search-box input::placeholder{color:#9AA29C;}
.search-box button{
  width:40px;
  height:100%;
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--muted);
  transition:color .18s ease;
}
.search-box button:hover{color:var(--ink);}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:#fff;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:var(--ink);
  transition:transform .2s ease,opacity .2s ease;
}
.site-header.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.site-header.nav-open .nav-toggle span:nth-child(2){opacity:0;}
.site-header.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.header-nav{
  border-bottom:1px solid var(--line);
  background:var(--paper);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:8px 0;
}
.channel-tabs{
  display:flex;
  align-items:center;
  gap:8px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.channel-tabs::-webkit-scrollbar{display:none;}
.tab{
  display:inline-block;
  padding:8px 18px;
  border-radius:999px;
  font-size:14px;
  font-weight:500;
  color:var(--muted);
  white-space:nowrap;
  transition:background-color .18s ease,color .18s ease;
}
.tab:hover{background:var(--paper-2);color:var(--ink);}
.tab.active{background:var(--accent);color:var(--ink);font-weight:600;}
.nav-cta{height:34px;padding:0 16px;font-size:13px;}

/* ---------- 分类 Banner ---------- */
.hero-banner{
  position:relative;
  isolation:isolate;
  background:var(--ink);
  color:#F2F1EC;
  overflow:hidden;
}
.hero-bg{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  z-index:-2;
  opacity:.5;
}
.hero-banner::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  background:rgba(14,21,18,.62);
}
.hero-inner{
  padding:76px 0 72px;
  max-width:860px;
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(242,241,236,.62);
  margin-bottom:22px;
}
.breadcrumb a{transition:color .18s ease;}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:rgba(242,241,236,.92);}
.hero-banner h1{
  font-size:clamp(32px,4.4vw,54px);
  line-height:1.12;
  font-weight:900;
  letter-spacing:-.02em;
  margin-bottom:20px;
}
.hero-banner h1 .mark{
  box-shadow:inset 0 -10px 0 rgba(200,242,75,.42);
}
.hero-desc{
  font-size:17px;
  line-height:1.8;
  color:rgba(242,241,236,.78);
  max-width:640px;
  margin-bottom:28px;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:32px;
}
.hero-tags span{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 12px;
  border:1px solid rgba(242,241,236,.28);
  border-radius:var(--radius-sm);
  font-size:13px;
  color:rgba(242,241,236,.82);
}
.hero-tags span i{color:var(--accent);font-size:11px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0;}
.section.alt{background:var(--paper-2);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:44px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.1em;
  color:var(--accent-deep);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:3px;
  height:14px;
  background:var(--accent);
  display:inline-block;
}
.section-head h2{
  font-size:clamp(26px,3vw,40px);
  line-height:1.18;
  font-weight:800;
  letter-spacing:-.01em;
}
.section-head .head-note{
  max-width:360px;
  font-size:14px;
  line-height:1.75;
  color:var(--muted);
}
.section-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  white-space:nowrap;
  border-bottom:1px solid transparent;
  transition:border-color .22s ease,color .22s ease;
}
.section-link:hover{border-bottom-color:var(--accent);}

/* ---------- 编号长列表 ---------- */
.numbered-list{
  border-top:1px solid var(--line);
}
.numbered-item{
  display:grid;
  grid-template-columns:120px minmax(0,1fr) 320px;
  gap:40px;
  align-items:start;
  padding:36px 0;
  border-bottom:1px solid var(--line);
  transition:background-color .2s ease,padding-left .2s ease;
}
.numbered-item:hover{
  background:rgba(200,242,75,.1);
  padding-left:12px;
}
.num{
  font-size:46px;
  line-height:1;
  font-weight:800;
  letter-spacing:-.03em;
  color:var(--accent-deep);
  font-variant-numeric:tabular-nums;
}
.numbered-item h3{
  font-size:22px;
  font-weight:700;
  line-height:1.34;
  margin-bottom:10px;
}
.numbered-item p{
  font-size:15.5px;
  color:var(--muted);
  line-height:1.82;
  max-width:560px;
}
.num-points{
  display:flex;
  flex-direction:column;
  gap:8px;
  padding-top:4px;
}
.num-points li{
  position:relative;
  padding-left:18px;
  font-size:13.5px;
  color:var(--muted);
  line-height:1.7;
}
.num-points li::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  width:8px;
  height:8px;
  border:1px solid var(--accent-deep);
  border-radius:50%;
}

/* ---------- 数据条带 ---------- */
.stats-band{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
  overflow:hidden;
}
.stat-cell{
  padding:34px 28px;
  border-right:1px solid var(--line);
}
.stat-cell:last-child{border-right:0;}
.stat-num{
  display:flex;
  align-items:baseline;
  gap:6px;
  font-weight:800;
  letter-spacing:-.03em;
  color:var(--ink);
  font-variant-numeric:tabular-nums;
}
.stat-num .value{font-size:58px;line-height:1;}
.stat-num .unit{font-size:14px;font-weight:600;color:var(--accent-deep);}
.stat-label{
  margin-top:10px;
  font-size:14px;
  font-weight:600;
}
.stat-desc{
  margin-top:6px;
  font-size:13px;
  line-height:1.7;
  color:var(--muted);
}

/* ---------- 图文分栏 ---------- */
.split{
  display:grid;
  grid-template-columns:1.02fr .98fr;
  gap:56px;
  align-items:center;
}
.split-media{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--paper-2);
  aspect-ratio:4/3;
}
.split-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.split-media:hover img{transform:scale(1.03);}
.split-body h2{
  font-size:clamp(24px,2.6vw,34px);
  line-height:1.24;
  font-weight:800;
  margin-bottom:16px;
}
.split-body > p{
  font-size:15.5px;
  color:var(--muted);
  line-height:1.85;
  margin-bottom:26px;
}
.step-list{
  display:flex;
  flex-direction:column;
  gap:0;
  border-top:1px solid var(--line);
  margin-bottom:28px;
}
.step-item{
  display:flex;
  gap:16px;
  padding:16px 0;
  border-bottom:1px solid var(--line);
}
.step-idx{
  flex:none;
  width:26px;
  height:26px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:var(--accent);
  color:var(--ink);
  font-size:12px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  margin-top:3px;
}
.step-item h4{
  font-size:15.5px;
  font-weight:700;
  margin-bottom:4px;
}
.step-item p{
  font-size:14px;
  color:var(--muted);
  line-height:1.72;
}

/* ---------- 人群卡片 ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.info-card{
  display:flex;
  flex-direction:column;
  padding:28px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.info-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-hover);
  border-color:#C9C5B7;
}
.info-card .card-idx{
  font-size:12px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--accent-deep);
  margin-bottom:16px;
}
.info-card h3{
  font-size:20px;
  font-weight:700;
  line-height:1.35;
  margin-bottom:10px;
}
.info-card p{
  font-size:14.5px;
  color:var(--muted);
  line-height:1.8;
  margin-bottom:20px;
}
.info-card .card-link{
  margin-top:auto;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.info-card .card-link i{font-size:11px;transition:transform .2s ease;}
.info-card:hover .card-link i{transform:translateX(4px);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  width:100%;
  padding:22px 0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  line-height:1.55;
  transition:color .18s ease;
}
.faq-q:hover{color:var(--accent-deep);}
.faq-icon{
  flex:none;
  width:24px;
  height:24px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:18px;
  font-weight:600;
  color:var(--accent-deep);
  transition:transform .3s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .32s cubic-bezier(.2,.7,.2,1);
}
.faq-a p{
  padding:0 0 24px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
  max-width:760px;
}

/* ---------- CTA 横条 ---------- */
.cta-bar{
  background:var(--ink);
  color:#F2F1EC;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:44px 0;
}
.cta-inner h2{
  font-size:clamp(22px,2.4vw,30px);
  font-weight:800;
  line-height:1.3;
  margin-bottom:8px;
}
.cta-inner p{
  font-size:14px;
  color:rgba(242,241,236,.66);
  line-height:1.7;
}
.cta-inner .btn{flex:none;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:rgba(242,241,236,.72);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
}
.site-footer .logo{color:#F2F1EC;font-size:19px;}
.site-footer .logo-mark{border-color:#F2F1EC;}
.site-footer .logo-sub{color:rgba(242,241,236,.55);}
.footer-desc{
  margin:16px 0 20px;
  font-size:14px;
  line-height:1.8;
  color:rgba(242,241,236,.6);
  max-width:340px;
}
.footer-contact div{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:13px;
  line-height:1.7;
  color:rgba(242,241,236,.56);
  margin-bottom:8px;
}
.footer-contact i{margin-top:5px;color:var(--accent);font-size:12px;}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:#F2F1EC;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{
  font-size:14px;
  color:rgba(242,241,236,.62);
  transition:color .18s ease;
}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0 28px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:rgba(242,241,236,.5);
}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:rgba(242,241,236,.72);
  transition:color .18s ease;
}
.to-top:hover{color:var(--accent);}

/* ---------- 弹层 ---------- */
.modal{
  position:fixed;
  inset:0;
  z-index:200;
  display:none;
  align-items:center;
  justify-content:center;
  padding:24px;
}
.modal.open{display:flex;}
.modal-mask{
  position:absolute;
  inset:0;
  background:rgba(14,21,18,.55);
  backdrop-filter:blur(4px);
  -webkit-backdrop-filter:blur(4px);
}
.modal-panel{
  position:relative;
  width:100%;
  max-width:520px;
  max-height:90vh;
  overflow-y:auto;
  background:#fff;
  border-radius:var(--radius);
  padding:32px;
  transform:scale(.98);
  opacity:0;
  transition:transform .2s ease,opacity .2s ease;
}
.modal.open .modal-panel{transform:scale(1);opacity:1;}
.modal-close{
  position:absolute;
  top:8px;
  right:8px;
  width:44px;
  height:44px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:22px;
  line-height:1;
  color:var(--muted);
  border-radius:var(--radius-sm);
  transition:background-color .18s ease,color .18s ease;
}
.modal-close:hover{background:var(--paper-2);color:var(--ink);}
.modal-panel h3{
  font-size:22px;
  font-weight:800;
  margin-bottom:8px;
  padding-right:36px;
}
.modal-sub{
  font-size:14px;
  color:var(--muted);
  line-height:1.7;
  margin-bottom:24px;
}
.form-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
}
.field{display:flex;flex-direction:column;gap:6px;}
.field.full{grid-column:1 / -1;}
.field label{
  font-size:13px;
  font-weight:600;
  color:var(--ink);
}
.field .req{color:var(--alert);margin-left:2px;}
.field input,
.field select,
.field textarea{
  width:100%;
  min-height:44px;
  padding:10px 12px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:#fff;
  font-size:14px;
  outline:none;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{min-height:88px;resize:vertical;line-height:1.7;}
.field input:focus,
.field select:focus,
.field textarea:focus{
  border-color:var(--ink);
  box-shadow:0 0 0 2px rgba(200,242,75,.85);
}
.field input::placeholder,
.field textarea::placeholder{color:#9AA29C;}
.check-row{
  display:flex;
  align-items:flex-start;
  gap:10px;
  grid-column:1 / -1;
  font-size:13px;
  line-height:1.6;
  color:var(--muted);
}
.check-row input{
  width:16px;
  height:16px;
  margin-top:3px;
  accent-color:var(--accent-deep);
  flex:none;
}
.form-foot{
  grid-column:1 / -1;
  display:flex;
  flex-direction:column;
  gap:12px;
  margin-top:4px;
}
.form-tip{
  font-size:12px;
  line-height:1.6;
  color:var(--muted);
}

/* ---------- 动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(10px);
  transition:opacity .32s cubic-bezier(.2,.7,.2,1),transform .32s cubic-bezier(.2,.7,.2,1);
}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .section{padding:72px 0;}
  .numbered-item{grid-template-columns:88px minmax(0,1fr);gap:28px;}
  .num-points{grid-column:2;padding-top:0;}
  .split{grid-template-columns:1fr;gap:36px;}
  .card-grid{grid-template-columns:1fr 1fr;}
  .stats-band{grid-template-columns:1fr 1fr;}
  .stat-cell:nth-child(2){border-right:0;}
  .stat-cell:nth-child(1),
  .stat-cell:nth-child(2){border-bottom:1px solid var(--line);}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;}
  .section-head .head-note{max-width:100%;}
}

@media (max-width:768px){
  .container{padding:0 20px;}
  .header-top{padding:10px 0;}
  .search-box{min-width:0;flex:1;max-width:200px;}
  .header-actions .btn-primary{display:none;}
  .nav-toggle{display:flex;}
  .header-nav{display:none;}
  .site-header.nav-open .header-nav{display:block;}
  .nav-inner{flex-direction:column;align-items:stretch;padding:12px 0 20px;gap:12px;}
  .channel-tabs{flex-direction:column;align-items:stretch;gap:4px;overflow:visible;}
  .tab{border-radius:var(--radius-sm);padding:12px 14px;font-size:15px;}
  .nav-cta{width:100%;height:44px;font-size:14px;}
  .hero-inner{padding:52px 0 48px;}
  .hero-desc{font-size:16px;}
  .hero-actions .btn{flex:1 1 auto;}
  .section{padding:56px 0;}
  .numbered-item{grid-template-columns:1fr;gap:12px;padding:28px 0;}
  .numbered-item:hover{padding-left:0;}
  .num{font-size:36px;}
  .num-points{grid-column:auto;gap:6px;}
  .card-grid{grid-template-columns:1fr;}
  .stats-band{grid-template-columns:1fr;}
  .stat-cell{border-right:0;border-bottom:1px solid var(--line);padding:24px;}
  .stat-cell:last-child{border-bottom:0;}
  .stat-num .value{font-size:48px;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:36px 0;gap:20px;}
  .cta-inner .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .form-grid{grid-template-columns:1fr;}
  .modal-panel{padding:24px;}
}

@media (max-width:520px){
  .hero-banner h1{font-size:30px;}
  .section-head h2{font-size:24px;}
  .faq-q{font-size:16px;gap:16px;}
  .logo{font-size:18px;}
  .logo-sub{display:none;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
}

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