/* roulang page: index */
:root{
  --ink-900:#0C1210;
  --ink-700:#1B2421;
  --paper:#F6F7F4;
  --card:#FFFFFF;
  --brand:#0FBF61;
  --brand-600:#0A9E4F;
  --brand-100:#E4F8EE;
  --accent:#FF7A1A;
  --line:#E3E7E1;
  --muted:#5C6B63;
  --radius-card:14px;
  --radius-block:20px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(12,18,16,.04), 0 8px 24px -12px rgba(12,18,16,.12);
  --shadow-2:0 16px 32px -16px rgba(12,18,16,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-700);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
.num{font-variant-numeric:tabular-nums;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
::selection{background:var(--brand-100);color:var(--ink-900);}

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

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  background:rgba(12,18,16,.28);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.14);
  transition:background .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(12,18,16,.96);
  border-bottom-color:rgba(255,255,255,.08);
  box-shadow:0 10px 30px -18px rgba(0,0,0,.85);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:64px;
}
@media (min-width:1024px){ .header-inner{height:72px;gap:32px;} }

.brand{display:flex;align-items:baseline;gap:7px;color:#fff;flex-shrink:0;}
.brand-mark{font-size:19px;font-weight:800;letter-spacing:-.01em;}
.brand-sub{
  font-size:12px;font-weight:500;
  color:rgba(255,255,255,.7);
  letter-spacing:.03em;
  padding-left:7px;
  border-left:1px solid rgba(255,255,255,.28);
}
@media (min-width:1024px){
  .brand-mark{font-size:21px;}
  .brand-sub{font-size:13px;}
}

.nav-links{display:none;align-items:center;gap:26px;}
@media (min-width:1024px){ .nav-links{display:flex;} }
.nav-link{
  position:relative;
  font-size:15px;
  color:rgba(255,255,255,.8);
  padding:4px 0;
  transition:color .16s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-6px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .18s var(--ease);
}
.nav-link:hover{color:#fff;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:#fff;font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}

.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.icon-btn{
  display:none;
  width:38px;height:38px;
  align-items:center;justify-content:center;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.2);
  color:rgba(255,255,255,.86);
  transition:background .16s var(--ease),border-color .16s var(--ease),color .16s var(--ease);
}
@media (min-width:1024px){ .icon-btn{display:inline-flex;} }
.icon-btn:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.4);color:#fff;}

.menu-btn{
  display:inline-flex;
  width:40px;height:40px;
  align-items:center;justify-content:center;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.2);
  color:#fff;
}
@media (min-width:1024px){ .menu-btn{display:none;} }

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  white-space:nowrap;
  transition:transform .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease);
}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:9px;}
.btn-primary{
  background:var(--brand);
  color:#052012;
  box-shadow:0 10px 22px -14px rgba(15,191,97,.95);
}
.btn-primary:hover{background:#0AA855;transform:translateY(-2px);box-shadow:0 16px 28px -16px rgba(15,191,97,1);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:rgba(255,255,255,.06);
  border-color:rgba(255,255,255,.34);
  color:#fff;
}
.btn-ghost:hover{background:rgba(15,191,97,.16);border-color:var(--brand);transform:translateY(-2px);}
.btn-outline{
  background:#fff;
  border-color:var(--line);
  color:var(--ink-900);
}
.btn-outline:hover{border-color:var(--brand);background:var(--brand-100);transform:translateY(-2px);}
.btn-dark{
  background:var(--ink-900);
  color:#fff;
}
.btn-dark:hover{background:#16201C;transform:translateY(-2px);}

.search-bar{
  display:none;
  border-top:1px solid rgba(255,255,255,.1);
  background:rgba(12,18,16,.94);
  padding:12px 0;
}
.search-bar.is-open{display:block;}
.search-inner{display:flex;gap:10px;max-width:520px;}
.search-input{
  flex:1;
  height:42px;
  padding:0 14px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.06);
  color:#fff;
  font-size:14px;
}
.search-input::placeholder{color:rgba(255,255,255,.5);}
.search-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,191,97,.22);}

/* 移动端抽屉 */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(12,18,16,.5);
  opacity:0;visibility:hidden;
  transition:opacity .22s var(--ease),visibility .22s var(--ease);
  z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  width:84%;
  max-width:340px;
  background:var(--ink-900);
  color:#fff;
  z-index:80;
  padding:22px 22px 32px;
  transform:translateX(100%);
  transition:transform .26s var(--ease);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-title{font-size:16px;font-weight:700;}
.drawer-close{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:9px;border:1px solid rgba(255,255,255,.2);color:#fff;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:24px;}
.drawer-link{
  padding:13px 14px;
  border-radius:10px;
  font-size:15px;
  color:rgba(255,255,255,.82);
  transition:background .16s var(--ease),color .16s var(--ease);
}
.drawer-link:hover{background:rgba(255,255,255,.08);color:#fff;}
.drawer-link.is-active{background:var(--brand-100);color:var(--brand-600);font-weight:600;}
.drawer-search{
  width:100%;
  height:44px;
  padding:0 14px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.06);
  color:#fff;
  margin-bottom:18px;
  font-size:14px;
}
.drawer-search::placeholder{color:rgba(255,255,255,.5);}
.drawer-search:focus{outline:none;border-color:var(--brand);}

/* ============ Hero ============ */
.hero{
  position:relative;
  overflow:hidden;
  padding-top:112px;
  padding-bottom:64px;
  color:#fff;
  background-image:
    linear-gradient(102deg,rgba(12,18,16,.94) 0%,rgba(12,18,16,.82) 42%,rgba(12,18,16,.44) 100%),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center 30%;
}
@media (min-width:768px){ .hero{padding-top:140px;padding-bottom:84px;} }
@media (min-width:1024px){ .hero{padding-top:168px;padding-bottom:96px;} }
.hero-arc{
  position:absolute;
  right:-16%;bottom:-52%;
  width:620px;height:620px;
  border:1px solid rgba(255,255,255,.07);
  border-radius:50%;
  pointer-events:none;
}
.hero-arc::after{
  content:"";
  position:absolute;
  inset:88px;
  border:1px solid rgba(15,191,97,.14);
  border-radius:50%;
}
.hero-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1fr;
  gap:44px;
  align-items:start;
}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:1.06fr .94fr;gap:56px;align-items:center;}
}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 14px;
  border-radius:999px;
  background:rgba(15,191,97,.16);
  border:1px solid rgba(15,191,97,.4);
  color:#8CF0BB;
  font-size:13px;
  font-weight:600;
  margin-bottom:22px;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--brand);display:block;}
.hero h1{
  font-size:30px;
  line-height:1.2;
  font-weight:800;
  letter-spacing:-.01em;
  color:#fff;
}
@media (min-width:768px){ .hero h1{font-size:40px;} }
@media (min-width:1024px){ .hero h1{font-size:48px;} }
.hero-sub{
  margin-top:18px;
  font-size:16px;
  line-height:1.7;
  color:rgba(255,255,255,.78);
  max-width:520px;
}
@media (min-width:768px){ .hero-sub{font-size:17px;} }
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}

.hero-stats{
  display:grid;
  grid-template-columns:1fr;
  gap:0;
  margin-top:48px;
  border-top:1px solid rgba(255,255,255,.16);
}
@media (min-width:640px){ .hero-stats{grid-template-columns:repeat(3,1fr);} }
.hero-stat{
  padding:18px 0 0;
  border-bottom:1px solid rgba(255,255,255,.08);
}
@media (min-width:640px){
  .hero-stat{border-bottom:0;padding:20px 20px 0 0;}
  .hero-stat + .hero-stat{border-left:1px solid rgba(255,255,255,.14);padding-left:20px;}
}
.hero-stat dt{font-size:13px;color:rgba(255,255,255,.58);}
.hero-stat dd{
  margin:6px 0 0;
  font-size:17px;
  font-weight:700;
  color:#fff;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}

/* 入口卡 */
.entry-card{
  background:#fff;
  border-radius:18px;
  padding:24px 22px 22px;
  box-shadow:0 26px 60px -30px rgba(0,0,0,.6);
  color:var(--ink-700);
}
@media (min-width:768px){ .entry-card{padding:28px 26px 24px;} }
.entry-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:6px;}
.entry-title{font-size:19px;font-weight:800;color:var(--ink-900);}
.entry-note{font-size:13px;color:var(--muted);margin-bottom:20px;}
.field{margin-bottom:14px;}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px;}
.input{
  width:100%;
  height:46px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  color:var(--ink-900);
  font-size:15px;
  transition:border-color .16s var(--ease),box-shadow .16s var(--ease);
}
.input::placeholder{color:#A7B1AB;}
.input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-100);}
.code-row{display:flex;gap:10px;}
.code-row .input{flex:1;}
.code-btn{
  flex-shrink:0;
  height:46px;
  padding:0 14px;
  border-radius:10px;
  border:1px solid var(--line);
  background:var(--brand-100);
  color:var(--brand-600);
  font-size:14px;
  font-weight:600;
  white-space:nowrap;
  transition:background .16s var(--ease),border-color .16s var(--ease);
}
.code-btn:hover{background:#D2F3E2;border-color:var(--brand);}
.agree-row{display:flex;align-items:flex-start;gap:9px;margin:16px 0 18px;font-size:13px;color:var(--muted);line-height:1.6;}
.agree-row input{width:16px;height:16px;margin-top:3px;accent-color:var(--brand);flex-shrink:0;}
.agree-row a{color:var(--brand-600);font-weight:600;border-bottom:1px solid rgba(10,158,79,.35);}
.entry-submit{width:100%;height:48px;}
.entry-links{
  display:flex;
  flex-wrap:wrap;
  gap:8px 18px;
  margin-top:16px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
}
.entry-links a{color:var(--brand-600);font-weight:600;}
.entry-links a:hover{text-decoration:underline;}
.login-tip{
  display:none;
  margin-top:12px;
  padding:10px 12px;
  border-radius:10px;
  background:rgba(255,122,26,.1);
  border:1px solid rgba(255,122,26,.34);
  color:#B24C00;
  font-size:13px;
  line-height:1.6;
}
.login-tip.is-show{display:block;}

/* ============ 通用板块 ============ */
.section{padding:56px 0;}
@media (min-width:768px){ .section{padding:80px 0;} }
@media (min-width:1024px){ .section{padding:100px 0;} }
.section--white{background:#fff;}
.section--ink{background:var(--ink-900);color:#fff;}
.section--tight{padding-top:48px;padding-bottom:48px;}
@media (min-width:1024px){ .section--tight{padding-top:72px;padding-bottom:72px;} }

.sec-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:700;
  color:var(--brand-600);
  letter-spacing:.06em;
}
.sec-eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--brand);}
.sec-title{
  margin-top:14px;
  font-size:24px;
  line-height:1.28;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink-900);
}
@media (min-width:768px){ .sec-title{font-size:30px;} }
@media (min-width:1024px){ .sec-title{font-size:34px;} }
.sec-desc{margin-top:14px;font-size:16px;color:var(--muted);max-width:680px;}
.sec-head{margin-bottom:36px;}
@media (min-width:1024px){ .sec-head{margin-bottom:48px;} }
.section--ink .sec-title{color:#fff;}
.section--ink .sec-desc{color:rgba(255,255,255,.68);}
.section--ink .sec-eyebrow{color:#8CF0BB;}

.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:999px;
  background:var(--brand-100);
  color:var(--brand-600);
  font-size:12px;
  font-weight:700;
  letter-spacing:.01em;
}
.badge-accent{background:rgba(255,122,26,.14);color:#B24C00;}

/* 价值主张 */
.value-grid{display:grid;grid-template-columns:1fr;gap:36px;align-items:center;}
@media (min-width:1024px){ .value-grid{grid-template-columns:5fr 7fr;gap:56px;} }
.value-list{display:flex;flex-direction:column;gap:18px;margin-top:28px;}
.value-item{display:flex;gap:12px;align-items:flex-start;}
.value-dot{
  flex-shrink:0;
  width:22px;height:22px;
  margin-top:4px;
  border-radius:7px;
  background:var(--brand-100);
  color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;
}
.value-item strong{display:block;font-size:16px;color:var(--ink-900);font-weight:700;}
.value-item span{display:block;font-size:14px;color:var(--muted);margin-top:2px;}
.value-figure{
  position:relative;
  border-radius:16px;
  overflow:hidden;
  box-shadow:var(--shadow-1);
  aspect-ratio:16/10;
}
.value-figure img{width:100%;height:100%;object-fit:cover;}
.value-figure figcaption{
  position:absolute;
  left:14px;bottom:14px;
  padding:7px 12px;
  border-radius:999px;
  background:rgba(12,18,16,.72);
  color:#fff;
  font-size:12px;
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
}

/* 功能分组 */
.feature-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:768px){ .feature-grid{grid-template-columns:repeat(2,1fr);} }
@media (min-width:1024px){ .feature-grid{grid-template-columns:repeat(6,1fr);} }
.feature-wide{
  display:grid;
  grid-template-columns:1fr;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-block);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
@media (min-width:640px){ .feature-wide{grid-template-columns:1fr 1fr;} }
@media (min-width:1024px){ .feature-wide{grid-column:span 3;} }
.feature-wide:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand);}
.feature-wide img{width:100%;height:100%;min-height:190px;object-fit:cover;}
.feature-wide-body{padding:22px;}
.feature-wide-body h3{font-size:19px;font-weight:700;color:var(--ink-900);margin-bottom:10px;}
.feature-wide-body p{font-size:14px;color:var(--muted);}
.feature-mini{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:14px;
  padding:20px;
  box-shadow:var(--shadow-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
@media (min-width:1024px){ .feature-mini{grid-column:span 2;} }
.feature-mini:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand);}
.feature-mini .mini-icon{
  width:38px;height:38px;
  border-radius:11px;
  background:var(--brand-100);
  color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:14px;
}
.feature-mini h3{font-size:16px;font-weight:700;color:var(--ink-900);margin-bottom:8px;}
.feature-mini p{font-size:14px;color:var(--muted);}

/* 场景编号条带 */
.scene-list{border-top:1px solid var(--line);}
.scene-item{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:20px;
  align-items:start;
  padding:26px 0;
  border-bottom:1px solid var(--line);
  transition:background .18s var(--ease);
}
@media (min-width:768px){ .scene-item{padding:32px 8px;gap:32px;} }
.scene-item:hover{background:rgba(15,191,97,.04);}
.scene-num{
  font-size:26px;
  font-weight:800;
  line-height:1;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  color:transparent;
  -webkit-text-stroke:1.4px var(--brand);
}
@media (min-width:768px){ .scene-num{font-size:38px;} }
.scene-body h3{font-size:17px;font-weight:700;color:var(--ink-900);margin-bottom:6px;}
@media (min-width:768px){ .scene-body h3{font-size:19px;} }
.scene-body p{font-size:14px;color:var(--muted);max-width:720px;}

/* 分类入口 */
.cat-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:768px){ .cat-grid{grid-template-columns:repeat(2,1fr);} }
.cat-card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:16px;
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.cat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--brand);}
.cat-card img{width:100%;aspect-ratio:16/8;object-fit:cover;}
.cat-card-body{padding:22px;}
.cat-card-body h3{font-size:19px;font-weight:700;color:var(--ink-900);margin-bottom:10px;}
.cat-card-body p{font-size:14px;color:var(--muted);margin-bottom:16px;}
.cat-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:700;
  color:var(--brand-600);
}
.cat-link::after{content:"→";transition:transform .18s var(--ease);}
.cat-card:hover .cat-link::after{transform:translateX(4px);}

/* 方案 */
.plan-grid{display:grid;grid-template-columns:1fr;gap:20px;align-items:start;}
@media (min-width:900px){ .plan-grid{grid-template-columns:repeat(3,1fr);gap:24px;} }
.plan{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-block);
  padding:26px 22px;
  box-shadow:var(--shadow-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.plan:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.plan.is-featured{
  border-color:var(--brand);
  box-shadow:0 22px 46px -26px rgba(15,191,97,.6);
}
@media (min-width:900px){
  .plan.is-featured{transform:translateY(-12px);}
  .plan.is-featured:hover{transform:translateY(-16px);}
}
@media (max-width:899px){
  .plan.is-featured{order:-1;}
}
.plan-flag{
  position:absolute;
  top:-12px;left:22px;
  height:24px;
  padding:0 12px;
  border-radius:999px;
  background:var(--accent);
  color:#3A1A00;
  font-size:12px;
  font-weight:800;
  display:inline-flex;
  align-items:center;
}
.plan h3{font-size:18px;font-weight:700;color:var(--ink-900);}
.plan-note{font-size:13px;color:var(--muted);margin-top:6px;}
.plan-line{height:1px;background:var(--line);margin:18px 0;}
.plan-features{display:flex;flex-direction:column;gap:11px;margin-bottom:22px;}
.plan-features li{
  display:flex;
  gap:9px;
  align-items:flex-start;
  font-size:14px;
  color:var(--ink-700);
}
.plan-features li::before{
  content:"✓";
  flex-shrink:0;
  width:18px;height:18px;
  margin-top:3px;
  border-radius:50%;
  background:var(--brand-100);
  color:var(--brand-600);
  font-size:11px;
  font-weight:800;
  display:flex;align-items:center;justify-content:center;
}
.plan .btn{width:100%;}

/* 最新信息 */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.news-more{font-size:14px;font-weight:700;color:var(--brand-600);}
.news-more:hover{text-decoration:underline;}
.news-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
}
@media (min-width:640px){ .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(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand);}
.news-cover{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--brand-100);}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.news-card:hover .news-cover img{transform:scale(1.04);}
.news-body{padding:18px;display:flex;flex-direction:column;flex:1;}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px;}
.news-time{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;}
.news-title{
  font-size:16px;
  font-weight:700;
  line-height:1.45;
  color:var(--ink-900);
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-title a:hover{color:var(--brand-600);}
.news-excerpt{
  font-size:14px;
  color:var(--muted);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.empty-state{
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  min-height:220px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:12px;
  padding:48px 24px;
  text-align:center;
  background:#fff;
}
.empty-state p{font-size:15px;color:var(--muted);}
.empty-icon{
  width:46px;height:46px;
  border-radius:14px;
  background:var(--brand-100);
  color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;
}

/* 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-item summary{
  list-style:none;
  cursor:pointer;
  padding:20px 6px;
  font-size:16px;
  font-weight:700;
  color:var(--ink-900);
  display:flex;
  align-items:flex-start;
  gap:12px;
  position:relative;
  transition:color .16s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"?";
  flex-shrink:0;
  width:22px;height:22px;
  margin-top:4px;
  border-radius:7px;
  background:var(--brand-100);
  color:var(--brand-600);
  font-size:13px;
  font-weight:800;
  display:flex;align-items:center;justify-content:center;
}
.faq-item summary:hover{color:var(--brand-600);}
.faq-item summary::after{
  content:"+";
  margin-left:auto;
  font-size:19px;
  font-weight:600;
  color:var(--muted);
  line-height:1;
  transition:transform .2s var(--ease);
}
.faq-item[open] summary::after{content:"−";color:var(--brand-600);}
.faq-item[open] summary{color:var(--ink-900);}
.faq-answer{
  padding:0 6px 22px 40px;
  font-size:15px;
  line-height:1.75;
  color:var(--ink-700);
  border-left:3px solid transparent;
  transition:border-color .2s var(--ease);
}
.faq-item[open] .faq-answer{border-left-color:var(--brand);padding-left:22px;margin-left:6px;}

/* CTA */
.cta-block{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-block);
  background-image:
    linear-gradient(rgba(12,18,16,.94),rgba(12,18,16,.94)),
    url('/assets/images/backpic/back-3.png');
  background-size:cover;
  background-position:center;
  padding:44px 24px;
  text-align:center;
  color:#fff;
}
@media (min-width:768px){ .cta-block{padding:64px 48px;} }
.cta-block h2{
  font-size:24px;
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.3;
}
@media (min-width:768px){ .cta-block h2{font-size:32px;} }
.cta-block p{
  margin-top:14px;
  font-size:15px;
  color:rgba(255,255,255,.72);
  max-width:560px;
  margin-left:auto;
  margin-right:auto;
}
.cta-actions{
  display:flex;
  flex-direction:column;
  gap:12px;
  margin-top:28px;
  align-items:stretch;
}
@media (min-width:520px){
  .cta-actions{flex-direction:row;justify-content:center;align-items:center;}
}

/* 页脚 */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px;}
@media (min-width:768px){ .footer-grid{grid-template-columns:repeat(2,1fr);gap:40px;} }
@media (min-width:1024px){ .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;} }
.footer-brand .brand{color:#fff;margin-bottom:14px;}
.footer-brand p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.6);max-width:320px;}
.qr-slot{
  margin-top:18px;
  width:96px;height:96px;
  border-radius:12px;
  border:1px dashed rgba(255,255,255,.24);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;
  color:rgba(255,255,255,.45);
  text-align:center;
  padding:8px;
  line-height:1.4;
}
.footer-title{
  font-size:14px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{
  font-size:14px;
  color:rgba(255,255,255,.68);
  transition:color .16s var(--ease);
}
.footer-links a:hover{color:var(--brand);text-decoration:underline;}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.68);margin-bottom:11px;line-height:1.6;}
.footer-contact li strong{color:#fff;font-weight:600;}
.footer-bottom{
  margin-top:44px;
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:var(--brand);}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
}

/* roulang page: article */
:root{
  --ink-900:#0C1210;
  --ink-700:#1B2421;
  --paper:#F6F7F4;
  --card:#FFFFFF;
  --brand:#0FBF61;
  --brand-600:#0A9E4F;
  --brand-100:#E4F8EE;
  --accent:#FF7A1A;
  --line:#E3E7E1;
  --muted:#5C6B63;
  --radius-sm:10px;
  --radius:14px;
  --radius-lg:20px;
  --shadow-1:0 1px 2px rgba(12,18,16,.04), 0 8px 24px -12px rgba(12,18,16,.12);
  --shadow-2:0 16px 32px -16px rgba(12,18,16,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--paper);
  color:var(--ink-700);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;}
button{font-family:inherit;}
.num,time{font-variant-numeric:tabular-nums;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-0.01em;}
p{margin:0;}

:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
@media (max-width:1023px){ .container{padding:0 24px;} }
@media (max-width:520px){ .container{padding:0 20px;} }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1;text-decoration:none;
  border:1px solid transparent;cursor:pointer;
  transition:transform .16s var(--ease),background .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease),box-shadow .16s var(--ease);
}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-primary{background:var(--brand);color:#04160C;box-shadow:0 10px 26px -14px rgba(15,191,97,.75);}
.btn-primary:hover{background:var(--brand-600);color:#04160C;transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.32);}
.btn-ghost:hover{background:var(--brand-100);color:var(--ink-900);border-color:var(--brand);transform:translateY(-2px);}
.btn-outline{background:transparent;color:var(--ink-900);border-color:var(--line);}
.btn-outline:hover{background:var(--brand-100);border-color:var(--brand);color:var(--brand-600);transform:translateY(-2px);}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 11px;
  border-radius:999px;font-size:12px;font-weight:600;line-height:1;
  background:var(--brand-100);color:var(--brand-600);white-space:nowrap;
}
.badge-accent{background:rgba(255,122,26,.12);color:#C4560A;}
.badge-soft{background:#EEF1EC;color:var(--muted);}

.tag-pill{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;
  border-radius:999px;border:1px solid var(--line);background:var(--card);
  font-size:13px;color:var(--ink-700);text-decoration:none;
  transition:background .16s var(--ease),border-color .16s var(--ease),color .16s var(--ease);
}
.tag-pill:hover{background:var(--brand-100);border-color:var(--brand);color:var(--brand-600);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(12,18,16,.28);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.14);
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(12,18,16,.96);
  box-shadow:0 12px 32px -20px rgba(0,0,0,.7);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
@media (max-width:1023px){ .header-inner{height:64px;gap:12px;} }

.brand{display:inline-flex;align-items:baseline;gap:8px;text-decoration:none;color:#fff;font-weight:800;}
.brand-mark{font-size:19px;letter-spacing:-0.01em;}
.brand-sub{font-size:12px;font-weight:500;color:rgba(255,255,255,.68);letter-spacing:0;}

.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;padding:9px 13px;border-radius:9px;font-size:15px;
  color:rgba(255,255,255,.82);text-decoration:none;
  transition:color .16s var(--ease),background .16s var(--ease);
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.1);}
.nav-link.is-active{color:#fff;font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);
}
@media (max-width:1023px){ .nav-links{display:none;} }

.header-actions{display:flex;align-items:center;gap:10px;}
.icon-btn,.menu-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;cursor:pointer;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:#fff;
  transition:background .16s var(--ease),border-color .16s var(--ease);
}
.icon-btn:hover,.menu-btn:hover{background:rgba(15,191,97,.22);border-color:var(--brand);}
.menu-btn{display:none;}
@media (max-width:1023px){ .menu-btn{display:inline-flex;} }
@media (max-width:520px){ .header-actions .btn{display:none;} }

.search-bar{
  max-height:0;overflow:hidden;background:rgba(12,18,16,.96);
  transition:max-height .25s var(--ease);
}
.search-bar.is-open{max-height:90px;border-top:1px solid rgba(255,255,255,.1);}
.search-inner{display:flex;gap:12px;padding:14px 0;}
.search-input{
  flex:1;height:44px;padding:0 14px;border-radius:10px;font-size:15px;
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#fff;
  transition:border-color .16s var(--ease),box-shadow .16s var(--ease);
}
.search-input::placeholder{color:rgba(255,255,255,.45);}
.search-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,191,97,.25);}

/* ---------- 移动抽屉 ---------- */
.drawer-overlay{
  position:fixed;inset:0;z-index:70;background:rgba(12,18,16,.5);
  opacity:0;pointer-events:none;transition:opacity .28s var(--ease);
}
.drawer-overlay.is-open{opacity:1;pointer-events:auto;}
.mobile-drawer{
  position:fixed;top:0;right:0;z-index:80;height:100%;width:84%;max-width:360px;
  background:var(--ink-900);padding:22px;overflow-y:auto;
  transform:translateX(100%);transition:transform .28s var(--ease);
}
.mobile-drawer.is-open{transform:translateX(0);}
@media (min-width:1024px){ .mobile-drawer,.drawer-overlay{display:none;} }
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:18px;border-bottom:1px solid rgba(255,255,255,.12);}
.drawer-close{
  width:36px;height:36px;border-radius:10px;font-size:20px;line-height:1;cursor:pointer;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:#fff;
}
.drawer-nav{display:flex;flex-direction:column;padding:12px 0;}
.drawer-nav a{
  padding:14px 6px;font-size:16px;color:rgba(255,255,255,.86);text-decoration:none;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.drawer-nav a:hover{color:var(--brand);}
.drawer-cta{width:100%;margin-top:18px;}

/* ---------- 文章头 ---------- */
.article-hero{
  position:relative;padding:142px 0 60px;overflow:hidden;
  background-color:#0C1210;
  background-image:linear-gradient(180deg,rgba(12,18,16,.88) 0%,rgba(12,18,16,.76) 42%,rgba(12,18,16,.94) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
}
@media (max-width:768px){ .article-hero{padding:112px 0 44px;} }

.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:18px;font-size:13px;color:rgba(255,255,255,.6);}
.crumbs a{color:rgba(255,255,255,.78);text-decoration:none;}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:rgba(255,255,255,.35);}

.article-title{
  max-width:860px;color:#fff;font-weight:800;line-height:1.22;
  font-size:clamp(30px,4.4vw,46px);letter-spacing:-0.01em;
}
.article-lead{max-width:760px;margin-top:16px;font-size:16px;color:rgba(255,255,255,.76);line-height:1.8;}
@media (max-width:520px){ .article-lead{font-size:15px;} }

.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:22px;font-size:13px;color:rgba(255,255,255,.62);}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px;}
.article-meta .meta-label{color:rgba(255,255,255,.45);}
.article-meta .badge{background:rgba(15,191,97,.18);color:#7DF3B4;}

/* ---------- 文章主体布局 ---------- */
.article-wrap{padding:64px 0 96px;}
@media (max-width:768px){ .article-wrap{padding:44px 0 64px;} }
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:56px;align-items:start;}
@media (max-width:1023px){ .article-layout{grid-template-columns:1fr;gap:40px;} }
.article-main{max-width:800px;min-width:0;}

.cover-figure{margin:0 0 40px;}
.cover-figure img{width:100%;aspect-ratio:21/9;object-fit:cover;border-radius:16px;box-shadow:var(--shadow-1);}
.cover-figure figcaption{margin-top:10px;font-size:13px;color:var(--muted);}

/* ---------- 正文排版 ---------- */
.article-content{font-size:16.5px;line-height:1.8;color:var(--ink-700);}
@media (max-width:520px){ .article-content{font-size:15.5px;} }
.article-content > *:first-child{margin-top:0;}
.article-content p{margin:0 0 1.5em;}
.article-content h2{
  position:relative;margin:2.2em 0 1em;padding-left:15px;
  font-size:26px;font-weight:700;line-height:1.35;color:var(--ink-900);
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:3px;border-radius:2px;background:var(--brand);
}
.article-content h3{margin:1.8em 0 .8em;font-size:20px;font-weight:600;line-height:1.4;color:var(--brand-600);}
.article-content h4{margin:1.5em 0 .7em;font-size:17px;font-weight:700;color:var(--ink-900);}
.article-content ul,.article-content ol{margin:0 0 1.5em;padding-left:1.4em;}
.article-content li{margin-bottom:.5em;}
.article-content ol li::marker{color:var(--brand-600);font-weight:700;}
.article-content ul li::marker{color:var(--brand);}
.article-content blockquote{
  margin:1.6em 0;padding:16px 20px;border-left:3px solid var(--brand);
  background:rgba(15,191,97,.06);border-radius:0 12px 12px 0;color:var(--ink-700);
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{border-radius:12px;margin:1.4em 0;}
.article-content a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;}
.article-content a:hover{color:var(--ink-900);}
.article-content figure{margin:1.6em 0;}
.article-content figcaption{margin-top:8px;font-size:13px;color:var(--muted);text-align:center;}
.article-content table{width:100%;max-width:100%;margin:1.6em 0;border-collapse:collapse;font-size:15px;}
.article-content th{background:var(--brand-100);color:var(--ink-900);font-weight:600;text-align:left;padding:12px 14px;border:1px solid var(--line);}
.article-content td{padding:12px 14px;border:1px solid var(--line);}
.article-content tbody tr:nth-child(even){background:#FAFBF9;}
.article-content code{background:#EEF1EC;border-radius:6px;padding:2px 6px;font-size:14px;}
.article-content hr{margin:2.4em 0;border:0;border-top:1px solid var(--line);}

/* ---------- 空态 ---------- */
.article-empty{
  border:1px dashed var(--line);border-radius:var(--radius);background:var(--card);
  padding:56px 24px;text-align:center;
}
.article-empty .empty-icon{
  width:54px;height:54px;margin:0 auto 16px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-100);color:var(--brand-600);
}
.article-empty h2{font-size:22px;font-weight:700;margin-bottom:10px;}
.article-empty p{font-size:15px;color:var(--muted);max-width:460px;margin:0 auto 22px;}

/* ---------- 文章底部操作区 ---------- */
.article-foot{margin-top:48px;padding-top:28px;border-top:1px solid var(--line);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.foot-actions{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;}
.share-group{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);}
.share-btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:36px;padding:0 14px;border-radius:999px;font-size:13px;cursor:pointer;
  border:1px solid var(--line);background:var(--card);color:var(--ink-700);text-decoration:none;
  transition:border-color .16s var(--ease),color .16s var(--ease),background .16s var(--ease);
}
.share-btn:hover{border-color:var(--brand);color:var(--brand-600);background:var(--brand-100);}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
@media (max-width:1023px){ .article-side{position:static;} }
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-1);}
.side-title{font-size:15px;font-weight:700;color:var(--ink-900);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-title::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--brand);display:inline-block;}
.side-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;}
.side-list li a{
  display:block;padding:9px 10px;border-radius:9px;font-size:14px;color:var(--ink-700);text-decoration:none;
  transition:background .16s var(--ease),color .16s var(--ease);
}
.side-list li a:hover{background:var(--brand-100);color:var(--brand-600);}
.side-note{font-size:13px;color:var(--muted);line-height:1.7;}
.side-cta{display:block;width:100%;margin-top:14px;}

/* ---------- 相关推荐 ---------- */
.related-section{padding:8px 0 96px;}
@media (max-width:768px){ .related-section{padding:8px 0 64px;} }
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;}
.section-head h2{font-size:28px;font-weight:700;}
@media (max-width:520px){ .section-head h2{font-size:23px;} }
.section-head p{margin-top:6px;font-size:14px;color:var(--muted);}
.head-link{font-size:14px;font-weight:600;color:var(--brand-600);text-decoration:none;}
.head-link:hover{color:var(--ink-900);text-decoration:underline;text-underline-offset:3px;}

.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
@media (max-width:1023px){ .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
@media (max-width:640px){ .rel-grid{grid-template-columns:1fr;} }

.rel-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;text-decoration:none;box-shadow:var(--shadow-1);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.rel-card:hover{transform:translateY(-3px);border-color:var(--brand);box-shadow:var(--shadow-2);}
.rel-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;}
.rel-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;}
.rel-title{font-size:16px;font-weight:700;line-height:1.55;color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-meta{font-size:13px;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq-section{padding:0 0 96px;}
@media (max-width:768px){ .faq-section{padding:0 0 64px;} }
.faq-list{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:8px 28px;box-shadow:var(--shadow-1);}
@media (max-width:520px){ .faq-list{padding:4px 18px;} }
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:16px;font-weight:700;color:var(--ink-900);
  transition:color .16s var(--ease),padding .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-size:20px;font-weight:400;color:var(--brand-600);transition:transform .2s var(--ease);}
.faq-item[open] summary{color:var(--brand-600);padding-left:14px;border-left:3px solid var(--brand);}
.faq-item[open] summary::after{content:"−";}
.faq-answer{padding:0 0 22px 14px;font-size:15px;line-height:1.8;color:var(--ink-700);}
.faq-answer p{margin:0;}

/* ---------- CTA ---------- */
.cta-section{
  position:relative;overflow:hidden;background:var(--ink-900);padding:84px 0;
}
.cta-section::after{
  content:"";position:absolute;right:-160px;top:-140px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(15,191,97,.20),rgba(15,191,97,0) 68%);
  pointer-events:none;
}
.cta-box{position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;}
.cta-text{max-width:600px;}
.cta-text h2{color:#fff;font-size:30px;font-weight:800;line-height:1.3;}
@media (max-width:520px){ .cta-text h2{font-size:24px;} }
.cta-text p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.7);}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
@media (max-width:520px){ .cta-actions{width:100%;} .cta-actions .btn{flex:1 1 100%;} }

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
@media (max-width:1023px){ .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px;} }
@media (max-width:640px){ .footer-grid{grid-template-columns:1fr;gap:32px;} }
.footer-brand .brand{color:#fff;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:320px;}
.qr-slot{
  margin-top:18px;width:120px;height:120px;border-radius:12px;
  border:1px dashed rgba(255,255,255,.28);display:flex;align-items:center;justify-content:center;
  text-align:center;font-size:13px;color:rgba(255,255,255,.5);background:rgba(255,255,255,.04);
}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.68);text-decoration:none;transition:color .16s var(--ease);}
.footer-links a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.footer-contact{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px;font-size:14px;color:rgba(255,255,255,.62);}
.footer-contact strong{color:rgba(255,255,255,.86);font-weight:600;}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.7);text-decoration:none;}
.footer-bottom a:hover{color:var(--brand);}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --ink-900:#0C1210;
  --ink-700:#1B2421;
  --paper:#F6F7F4;
  --card:#FFFFFF;
  --brand:#0FBF61;
  --brand-600:#0A9E4F;
  --brand-700:#088741;
  --brand-100:#E4F8EE;
  --accent:#FF7A1A;
  --line:#E3E7E1;
  --muted:#5C6B63;
  --radius-card:14px;
  --radius-block:20px;
  --radius-btn:10px;
  --shadow-soft:0 1px 2px rgba(12,18,16,.04), 0 8px 24px -12px rgba(12,18,16,.12);
  --shadow-lift:0 16px 32px -16px rgba(12,18,16,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0;}
ul,ol{margin:0;padding:0;}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
@media(max-width:1024px){.container{padding:0 24px;}}
@media(max-width:640px){.container{padding:0 20px;}}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  background:rgba(12,18,16,.28);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.14);
  transition:background .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(12,18,16,.96);
  border-bottom-color:rgba(255,255,255,.08);
  box-shadow:0 10px 30px -18px rgba(12,18,16,.75);
}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;}
@media(max-width:640px){.header-inner{height:64px;gap:10px;}}

.brand{display:flex;align-items:baseline;gap:10px;flex-shrink:0;}
.brand-mark{font-size:19px;font-weight:800;letter-spacing:-.01em;color:#fff;}
.brand-sub{
  font-size:12px;color:rgba(255,255,255,.68);
  padding-left:10px;border-left:1px solid rgba(255,255,255,.22);
  letter-spacing:.02em;white-space:nowrap;
}
@media(max-width:520px){.brand-sub{display:none;}}

.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto;}
.nav-link{
  position:relative;
  font-size:15px;color:rgba(255,255,255,.8);
  padding:6px 0;
  transition:color .18s var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:#fff;}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:#fff;font-weight:600;}

.header-actions{margin-left:22px;display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:38px;height:38px;border-radius:999px;
  display:grid;place-items:center;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.18);
  color:#fff;cursor:pointer;
  transition:background .18s var(--ease),transform .18s var(--ease);
}
.icon-btn:hover{background:rgba(255,255,255,.22);transform:translateY(-1px);}
.menu-btn{
  display:none;width:38px;height:38px;border-radius:10px;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.18);
  color:#fff;cursor:pointer;place-items:center;
  transition:background .18s var(--ease);
}
.menu-btn:hover{background:rgba(255,255,255,.22);}

.search-bar{
  max-height:0;overflow:hidden;
  background:rgba(12,18,16,.96);
  transition:max-height .28s var(--ease);
}
.search-bar.is-open{max-height:110px;}
.search-inner{display:flex;gap:10px;padding:14px 0 18px;}
.search-input{
  flex:1;height:44px;border-radius:10px;
  border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.08);
  color:#fff;padding:0 14px;font-size:15px;outline:none;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.search-input::placeholder{color:rgba(255,255,255,.5);}
.search-input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,191,97,.24);}

/* ============ 移动抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;z-index:130;
  background:rgba(12,18,16,.5);
  opacity:0;visibility:hidden;
  transition:opacity .25s var(--ease),visibility .25s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;z-index:140;
  width:84%;max-width:340px;height:100%;
  background:var(--ink-900);
  transform:translateX(100%);
  transition:transform .28s var(--ease);
  padding:22px 22px 32px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:36px;height:36px;border-radius:10px;
  background:rgba(255,255,255,.1);color:#fff;cursor:pointer;
  display:grid;place-items:center;border:1px solid rgba(255,255,255,.16);
}
.drawer-link{
  display:block;padding:15px 4px;font-size:16px;
  color:rgba(255,255,255,.85);
  border-bottom:1px solid rgba(255,255,255,.1);
  transition:color .18s var(--ease);
}
.drawer-link:hover{color:#fff;}
.drawer-link.is-active{color:var(--brand);font-weight:600;}
.drawer-cta{margin-top:24px;width:100%;}
.drawer-search{margin-top:16px;display:flex;gap:8px;}
.drawer-search .search-input{height:42px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;
  border:1px solid transparent;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;white-space:nowrap;cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),
             border-color .18s var(--ease),transform .18s var(--ease),
             box-shadow .18s var(--ease);
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px;}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 10px 22px -14px rgba(10,158,79,.95);}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.42);}
.btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--ink-900);border-color:var(--line);}
.btn-outline:hover{border-color:var(--brand);background:var(--brand-100);color:var(--brand-600);transform:translateY(-2px);}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none;}

/* ============ 页头横幅 ============ */
.page-banner{
  position:relative;
  padding:152px 0 70px;
  background-image:
    linear-gradient(100deg,rgba(12,18,16,.88) 0%,rgba(12,18,16,.68) 46%,rgba(12,18,16,.42) 100%),
    url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-banner::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(15,191,97,.65),transparent);
}
.banner-inner{position:relative;z-index:2;}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.66);margin-bottom:18px;
}
.breadcrumb a{transition:color .18s var(--ease);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;}
.breadcrumb .sep{color:rgba(255,255,255,.34);}
.banner-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;letter-spacing:.06em;
  color:#8FF0BE;
  background:rgba(15,191,97,.14);
  border:1px solid rgba(15,191,97,.34);
  border-radius:999px;padding:5px 14px;margin-bottom:18px;
}
.banner-title{
  font-size:46px;font-weight:800;line-height:1.2;
  letter-spacing:-.01em;color:#fff;max-width:660px;
}
.banner-lead{
  margin-top:18px;max-width:660px;
  font-size:16px;line-height:1.85;color:rgba(255,255,255,.82);
}
.banner-actions{margin-top:30px;display:flex;gap:12px;flex-wrap:wrap;}
@media(max-width:1024px){
  .page-banner{padding:132px 0 58px;}
  .banner-title{font-size:34px;}
}
@media(max-width:640px){
  .page-banner{padding:110px 0 46px;}
  .banner-title{font-size:27px;}
  .banner-lead{font-size:15px;}
  .banner-actions .btn{flex:1 1 auto;}
}

/* ============ 主体分栏 ============ */
.section{padding:76px 0;}
.section-tight{padding:56px 0;}
.layout-split{
  display:grid;
  grid-template-columns:200px minmax(0,1fr);
  gap:60px;
  align-items:start;
}
@media(max-width:1024px){
  .layout-split{grid-template-columns:1fr;gap:30px;}
}

.anchor-nav{position:sticky;top:104px;}
.anchor-title{
  font-size:12px;letter-spacing:.16em;color:var(--muted);
  margin-bottom:14px;text-transform:uppercase;
}
.anchor-link{
  display:block;font-size:14px;color:var(--muted);
  padding:9px 0 9px 14px;
  border-left:2px solid var(--line);
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.anchor-link:hover{color:var(--ink-900);border-left-color:#B9C4BB;}
.anchor-link.is-active{
  color:var(--ink-900);font-weight:600;
  border-left-color:var(--brand);
  background:linear-gradient(90deg,rgba(15,191,97,.1),transparent);
}
@media(max-width:1024px){
  .anchor-nav{
    position:static;
    display:flex;flex-wrap:wrap;gap:8px;
    background:var(--card);border:1px solid var(--line);
    border-radius:var(--radius-card);padding:14px 16px;
  }
  .anchor-title{width:100%;margin-bottom:4px;}
  .anchor-link{
    border:1px solid var(--line);border-radius:999px;
    padding:6px 14px;font-size:13.5px;
  }
  .anchor-link.is-active{border-color:var(--brand);background:var(--brand-100);color:var(--brand-600);}
}

.content-col{max-width:820px;}
.block + .block{margin-top:68px;}
.block-title{
  font-size:30px;font-weight:700;line-height:1.32;
  letter-spacing:-.01em;color:var(--ink-900);
}
.block-title::before{
  content:"";display:block;width:38px;height:3px;border-radius:2px;
  background:var(--brand);margin-bottom:18px;
}
.block-sub{margin-top:14px;font-size:16px;color:var(--muted);line-height:1.8;}
.block-body{margin-top:20px;font-size:16px;line-height:1.85;color:var(--ink-700);}
.block-body p + p{margin-top:16px;}
@media(max-width:640px){
  .block + .block{margin-top:52px;}
  .block-title{font-size:24px;}
}

/* 要点清单 */
.check-list{margin-top:24px;display:grid;gap:14px;list-style:none;}
.check-list li{position:relative;padding-left:32px;font-size:15.5px;line-height:1.75;color:var(--ink-700);}
.check-list li::before{
  content:"";position:absolute;left:0;top:.34em;
  width:18px;height:18px;border-radius:6px;
  background:var(--brand-100);border:1px solid rgba(15,191,97,.38);
}
.check-list li::after{
  content:"";position:absolute;left:6px;top:.63em;
  width:5px;height:9px;
  border-right:2px solid var(--brand-600);
  border-bottom:2px solid var(--brand-600);
  transform:rotate(42deg);
}

/* 入口方式卡片 */
.entry-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:28px;}
@media(max-width:900px){.entry-grid{grid-template-columns:1fr;}}
.entry-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:24px 22px;
  box-shadow:var(--shadow-soft);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.entry-card:hover{transform:translateY(-3px);border-color:var(--brand);box-shadow:var(--shadow-lift);}
.entry-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:10px;
  background:var(--brand-100);color:var(--brand-600);
  font-size:14px;font-weight:800;letter-spacing:.02em;
}
.entry-card h3{margin-top:16px;font-size:18px;font-weight:700;color:var(--ink-900);line-height:1.45;}
.entry-card p{margin-top:8px;font-size:14.5px;line-height:1.75;color:var(--muted);}

/* 步骤流 */
.steps{margin-top:30px;}
.step{position:relative;display:grid;grid-template-columns:56px minmax(0,1fr);gap:18px;padding-bottom:32px;}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:27px;top:58px;bottom:0;
  border-left:2px dashed rgba(15,191,97,.45);
}
.step:last-child::before{display:none;}
.step-no{
  width:56px;height:56px;border-radius:16px;
  border:1px solid rgba(15,191,97,.5);
  background:var(--brand-100);color:var(--brand-600);
  display:grid;place-items:center;
  font-size:17px;font-weight:800;letter-spacing:.02em;
}
.step-body h3{font-size:19px;font-weight:700;color:var(--ink-900);line-height:1.5;}
.step-body p{margin-top:8px;font-size:15px;line-height:1.78;color:var(--muted);}

/* 对比表 */
.table-wrap{
  margin-top:26px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
}
table.compare{width:100%;border-collapse:collapse;font-size:15px;}
table.compare th{
  background:#EFF4EF;color:var(--ink-900);
  font-size:14px;font-weight:700;text-align:left;
  padding:15px 20px;white-space:nowrap;
}
table.compare td{
  padding:15px 20px;border-top:1px solid var(--line);
  color:var(--ink-700);line-height:1.7;
}
table.compare tbody tr:nth-child(even){background:#FAFBF9;}
table.compare td:first-child{font-weight:600;color:var(--ink-900);}
@media(max-width:640px){
  table.compare thead{display:none;}
  table.compare tr{display:block;border-top:1px solid var(--line);padding:8px 0;}
  table.compare tr:first-child{border-top:0;}
  table.compare td{display:block;border-top:0;padding:6px 18px;}
  table.compare td::before{
    content:attr(data-label);display:block;
    font-size:12px;letter-spacing:.08em;color:var(--muted);margin-bottom:2px;
  }
}

/* 场景区 */
.scene-wrap{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:28px;margin-top:28px;align-items:start;}
@media(max-width:900px){.scene-wrap{grid-template-columns:1fr;}}
.scene-list{display:grid;gap:12px;list-style:none;}
.scene-item{
  display:flex;align-items:flex-start;gap:14px;
  background:var(--card);border:1px solid var(--line);
  border-radius:12px;padding:16px 18px;
  transition:border-color .18s var(--ease),transform .18s var(--ease);
}
.scene-item:hover{border-color:var(--brand);transform:translateY(-2px);}
.scene-tag{
  flex-shrink:0;font-size:12px;font-weight:700;
  color:var(--brand-600);background:var(--brand-100);
  border-radius:999px;padding:4px 11px;line-height:1.6;
}
.scene-item strong{display:block;font-size:15.5px;color:var(--ink-900);font-weight:700;}
.scene-item span.scene-desc{display:block;margin-top:4px;font-size:14px;color:var(--muted);line-height:1.7;}
.scene-figure{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
}
.scene-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.scene-figure figcaption{
  font-size:13px;color:var(--muted);line-height:1.65;
  padding:11px 14px;border-top:1px solid var(--line);
}

/* FAQ */
.faq-list{
  margin-top:26px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  position:relative;list-style:none;cursor:pointer;
  padding:18px 22px 18px 46px;
  font-size:16px;font-weight:700;color:var(--ink-900);line-height:1.6;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"+";position:absolute;left:20px;top:16px;
  font-size:18px;font-weight:700;color:var(--brand-600);line-height:1.6;
  transition:transform .2s var(--ease);
}
.faq-item[open] summary::before{content:"−";}
.faq-item summary:hover{background:#F8FAF7;}
.faq-item[open] summary{background:#FAFBF9;}
.faq-item[open] summary::after{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  background:var(--brand);border-radius:0 3px 3px 0;
}
.faq-answer{padding:2px 22px 22px 46px;font-size:15px;line-height:1.82;color:var(--ink-700);}
@media(max-width:640px){
  .faq-item summary{padding:16px 16px 16px 40px;font-size:15px;}
  .faq-item summary::before{left:16px;top:14px;}
  .faq-answer{padding:2px 16px 18px 40px;font-size:14.5px;}
}

/* CTA 条 */
.cta-strip{
  position:relative;overflow:hidden;
  margin-top:76px;
  background:var(--ink-900);
  border-radius:var(--radius-block);
  padding:46px 42px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-strip::after{
  content:"";position:absolute;right:-70px;top:-70px;
  width:280px;height:280px;border-radius:50%;
  border:1px solid rgba(15,191,97,.28);
}
.cta-strip::before{
  content:"";position:absolute;left:-60px;bottom:-110px;
  width:240px;height:240px;border-radius:50%;
  border:1px dashed rgba(255,255,255,.12);
}
.cta-copy{position:relative;z-index:2;}
.cta-copy h2{font-size:28px;font-weight:800;line-height:1.35;color:#fff;letter-spacing:-.01em;}
.cta-copy p{margin-top:12px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.72);max-width:52ch;}
.cta-actions{position:relative;z-index:2;display:flex;gap:12px;flex-shrink:0;}
@media(max-width:900px){
  .cta-strip{flex-direction:column;align-items:flex-start;padding:34px 24px;margin-top:56px;}
  .cta-copy h2{font-size:23px;}
  .cta-actions{width:100%;flex-wrap:wrap;}
  .cta-actions .btn{flex:1 1 180px;}
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;
  background:var(--ink-900);
  color:rgba(255,255,255,.72);
  padding:64px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
@media(max-width:960px){.footer-grid{grid-template-columns:1fr 1fr;gap:34px;}}
@media(max-width:560px){.footer-grid{grid-template-columns:1fr;gap:30px;}}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:34ch;}
.qr-slot{
  margin-top:20px;width:108px;height:108px;border-radius:12px;
  border:1px dashed rgba(255,255,255,.28);
  display:grid;place-items:center;text-align:center;
  font-size:12px;line-height:1.65;color:rgba(255,255,255,.5);
}
.footer-title{font-size:14px;font-weight:700;color:#fff;letter-spacing:.02em;margin-bottom:16px;}
.footer-links{display:grid;gap:11px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.66);transition:color .18s var(--ease);}
.footer-links a:hover{color:var(--brand);text-decoration:underline;}
.footer-contact{list-style:none;display:grid;gap:12px;font-size:14px;color:rgba(255,255,255,.62);}
.footer-contact li{line-height:1.75;}
.footer-contact strong{color:rgba(255,255,255,.88);font-weight:600;}
.footer-bottom{
  margin-top:54px;padding:20px 0 26px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.6);transition:color .18s var(--ease);}
.footer-bottom a:hover{color:var(--brand);}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
/* ---------- 设计变量 ---------- */
:root{
  --ink-900:#0C1210;
  --ink-700:#1B2421;
  --paper:#F6F7F4;
  --paper-alt:#EDF1EA;
  --card:#FFFFFF;
  --brand:#0FBF61;
  --brand-600:#0A9E4F;
  --brand-100:#E4F8EE;
  --accent:#FF7A1A;
  --line:#E3E7E1;
  --muted:#5C6B63;
  --r-card:14px;
  --r-block:20px;
  --r-btn:10px;
  --shadow-1:0 1px 2px rgba(12,18,16,.04),0 8px 24px -12px rgba(12,18,16,.12);
  --shadow-2:0 16px 32px -16px rgba(12,18,16,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --head-h:72px;
}

/* ---------- 基础 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-700);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* ---------- 容器 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(12,18,16,.28);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.14);
  box-shadow:0 8px 30px -22px rgba(12,18,16,.9);
  transition:background .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-solid{
  background:rgba(12,18,16,.96);
  box-shadow:0 12px 34px -20px rgba(12,18,16,.85);
}
.header-inner{display:flex;align-items:center;gap:20px;height:var(--head-h);color:#fff}
.brand{display:flex;flex-direction:column;line-height:1.15;flex-shrink:0}
.brand-mark{font-size:17px;font-weight:800;letter-spacing:.02em}
.brand-sub{font-size:11px;font-weight:500;letter-spacing:.16em;color:rgba(255,255,255,.68)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:16px}
.nav-link{
  position:relative;padding:8px 12px;border-radius:8px;font-size:14.5px;
  color:rgba(255,255,255,.82);
  transition:color .16s var(--ease),background .16s var(--ease);
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.09)}
.nav-link.is-active{color:#fff;background:rgba(15,191,97,.18)}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand);
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.icon-btn{
  width:38px;height:38px;display:grid;place-items:center;
  border-radius:10px;border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.06);color:#fff;cursor:pointer;
  transition:background .16s var(--ease),border-color .16s var(--ease);
}
.icon-btn:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.4)}
.menu-btn{display:none;width:38px;height:38px;place-items:center;border-radius:10px;
  border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.06);color:#fff;cursor:pointer}

/* 搜索条 */
.search-bar{max-height:0;overflow:hidden;background:rgba(12,18,16,.94);
  transition:max-height .22s var(--ease);border-top:1px solid transparent}
.search-bar.is-open{max-height:84px;border-top-color:rgba(255,255,255,.12)}
.search-inner{display:flex;gap:12px;padding:14px 0}
.search-input{
  flex:1;height:44px;padding:0 14px;border-radius:10px;
  border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.07);
  color:#fff;font-size:14.5px;
}
.search-input::placeholder{color:rgba(255,255,255,.5)}
.search-input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,191,97,.22);outline:none}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;z-index:70;background:rgba(12,18,16,.5);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:80;width:84%;max-width:360px;
  background:var(--ink-900);padding:24px 22px;
  display:flex;flex-direction:column;gap:6px;
  transform:translateX(105%);transition:transform .26s var(--ease);
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-close{width:34px;height:34px;border-radius:10px;border:1px solid rgba(255,255,255,.2);
  background:transparent;color:#fff;cursor:pointer;display:grid;place-items:center}
.drawer-link{
  padding:13px 14px;border-radius:10px;color:rgba(255,255,255,.85);font-size:15px;
  border:1px solid transparent;transition:background .16s var(--ease),color .16s var(--ease);
}
.drawer-link:hover{background:rgba(255,255,255,.08);color:#fff}
.drawer-link.is-active{background:rgba(15,191,97,.16);color:#fff;border-color:rgba(15,191,97,.4)}
.drawer-cta{margin-top:16px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border:1px solid transparent;border-radius:var(--r-btn);
  font-size:14.5px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .16s var(--ease),background .16s var(--ease),
             color .16s var(--ease),border-color .16s var(--ease),box-shadow .16s var(--ease);
}
.btn-primary{background:var(--brand);color:#08240f;box-shadow:0 8px 18px -12px rgba(15,191,97,.9)}
.btn-primary:hover{background:var(--brand-600);color:#04220f;transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{border-color:var(--line);background:transparent;color:var(--ink-900)}
.btn-outline:hover{background:var(--brand-100);border-color:var(--brand);transform:translateY(-2px)}
.btn-outline-light{border-color:rgba(255,255,255,.36);background:transparent;color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.68);transform:translateY(-2px)}
.btn-sm{padding:8px 14px;font-size:13.5px}
.btn-lg{padding:14px 26px;font-size:15.5px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}

/* ---------- 页头（浅色网格） ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:calc(var(--head-h) + 60px) 0 64px;
  background-color:var(--paper-alt);
  background-image:
    linear-gradient(rgba(12,18,16,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(12,18,16,.045) 1px,transparent 1px);
  background-size:28px 28px,28px 28px;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;right:-140px;top:-150px;width:440px;height:440px;border-radius:50%;
  background:radial-gradient(circle,rgba(15,191,97,.18),transparent 68%);pointer-events:none;
}
.page-hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:56px;align-items:center}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:16px}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .sep{color:rgba(12,18,16,.25)}
.page-hero h1{
  font-size:clamp(30px,4.4vw,46px);font-weight:800;line-height:1.2;
  letter-spacing:-.01em;color:var(--ink-900);margin-bottom:16px;
}
.page-hero-lead{font-size:16.5px;line-height:1.75;color:var(--ink-700);max-width:620px}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;
  margin-top:32px;padding-top:22px;border-top:1px solid rgba(12,18,16,.1);
}
.hero-stat dt{font-size:12.5px;letter-spacing:.06em;color:var(--muted)}
.hero-stat dd{margin:4px 0 0;font-size:15.5px;font-weight:700;color:var(--ink-900)}
.hero-thumb{position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-2)}
.hero-thumb img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-thumb-tag{
  position:absolute;left:14px;bottom:14px;padding:5px 12px;border-radius:999px;
  background:rgba(255,255,255,.92);color:var(--ink-900);font-size:12.5px;font-weight:700;
  box-shadow:var(--shadow-1);
}

/* ---------- 标签行 ---------- */
.tag-strip{background:var(--card);border-bottom:1px solid var(--line)}
.tag-row{display:flex;gap:10px;overflow-x:auto;padding:18px 0;scrollbar-width:none}
.tag-row::-webkit-scrollbar{display:none}
.tag{
  flex:0 0 auto;padding:7px 16px;border-radius:999px;border:1px solid var(--line);
  background:transparent;color:var(--ink-700);font-size:13.5px;font-weight:600;
  transition:background .16s var(--ease),border-color .16s var(--ease),color .16s var(--ease);
}
.tag:hover{border-color:var(--brand);color:var(--brand-600);background:var(--brand-100)}
.tag.is-current{background:var(--ink-900);border-color:var(--ink-900);color:#fff}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.bg-card{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.bg-alt{background:var(--paper-alt)}
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.16em;
  color:var(--brand-600);margin-bottom:10px;
}
.section-title{font-size:clamp(24px,3.1vw,32px);font-weight:700;line-height:1.28;letter-spacing:-.01em;color:var(--ink-900)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px}
.section-sub{max-width:500px;font-size:15px;color:var(--muted);line-height:1.8}
.section-head-center{max-width:720px;margin:0 auto 44px;text-align:center}
.section-head-center .section-sub{margin:12px auto 0}

/* ---------- 图文分栏 ---------- */
.split{display:grid;grid-template-columns:5fr 7fr;gap:52px;align-items:center}
.split-media{border-radius:16px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1)}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split-body h2{margin-bottom:16px}
.split-body > p{font-size:15.5px;line-height:1.8;color:var(--ink-700);margin-bottom:24px}
.point-list{display:flex;flex-direction:column;gap:16px}
.point{display:grid;grid-template-columns:22px 1fr;gap:12px;font-size:15.5px;line-height:1.72}
.point-mark{
  width:22px;height:22px;margin-top:5px;border-radius:50%;
  background:var(--brand-100);color:var(--brand-600);
  display:grid;place-items:center;font-size:12px;font-weight:800;
}
.point strong{color:var(--ink-900)}

/* ---------- 数据维度卡 ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.metric-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--shadow-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.metric-card:hover{transform:translateY(-3px);border-color:var(--brand);box-shadow:var(--shadow-2)}
.metric-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--brand-100);color:var(--brand-600);margin-bottom:16px;
}
.metric-card h3{font-size:18px;font-weight:700;color:var(--ink-900);margin-bottom:8px}
.metric-card p{font-size:14.5px;line-height:1.72;color:var(--muted)}
.metric-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px}
.chip{
  padding:3px 10px;border-radius:999px;background:var(--paper-alt);
  color:var(--muted);font-size:12px;font-weight:600;
}

/* ---------- 场景条带 ---------- */
.band-list{border-top:1px solid var(--line)}
.band{
  display:grid;grid-template-columns:104px minmax(0,1fr);gap:28px;align-items:center;
  padding:30px 0;border-bottom:1px solid var(--line);
}
.band-num{
  font-size:38px;font-weight:800;letter-spacing:.02em;line-height:1;
  color:#fff;-webkit-text-stroke:1.4px var(--brand);
}
@supports not ((-webkit-text-stroke:1px #000)){
  .band-num{color:var(--brand-600)}
}
.band h3{font-size:19px;font-weight:700;color:var(--ink-900);margin-bottom:6px}
.band p{font-size:15px;line-height:1.75;color:var(--muted);max-width:760px}

/* ---------- 双列对比 ---------- */
.compare{
  display:grid;grid-template-columns:1fr 1px 1fr;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-block);
  overflow:hidden;box-shadow:var(--shadow-1);
}
.compare-col{padding:40px 38px}
.compare-divider{background:var(--line)}
.compare-col h3{font-size:20px;font-weight:700;color:var(--ink-900);margin-bottom:6px}
.compare-col .compare-note{font-size:13.5px;color:var(--muted);margin-bottom:20px}
.compare-list{display:flex;flex-direction:column;gap:14px}
.compare-list li{
  position:relative;padding-left:20px;font-size:15px;line-height:1.72;color:var(--ink-700);
}
.compare-list li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;
  background:var(--brand);opacity:.85;
}

/* ---------- 步骤流 ---------- */
.steps{display:flex;flex-direction:column}
.step{position:relative;display:grid;grid-template-columns:76px minmax(0,1fr);gap:26px;padding-bottom:36px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:37px;top:76px;bottom:0;
  border-left:2px dashed rgba(15,191,97,.5);
}
.step:last-child::before{display:none}
.step-num{
  width:76px;height:76px;border-radius:50%;display:grid;place-items:center;
  background:var(--card);border:1px dashed rgba(15,191,97,.6);
  color:var(--brand-600);font-size:21px;font-weight:800;letter-spacing:.02em;
  box-shadow:var(--shadow-1);
}
.step-body h3{font-size:19px;font-weight:700;color:var(--ink-900);margin-bottom:8px}
.step-body p{font-size:15px;line-height:1.78;color:var(--muted);max-width:760px}
.step-body .step-note{
  display:inline-block;margin-top:12px;padding:6px 12px;border-radius:8px;
  background:var(--brand-100);color:var(--brand-600);font-size:13px;font-weight:600;
}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;
  gap:20px;padding:22px 0;font-size:16.5px;font-weight:700;color:var(--ink-900);
  transition:color .16s var(--ease),padding-left .18s var(--ease),border-color .18s var(--ease);
  border-left:3px solid transparent;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-600)}
.faq-item[open] summary{
  color:var(--brand-600);border-left-color:var(--brand);padding-left:14px;
}
.faq-icon{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;margin-top:4px;
  display:grid;place-items:center;background:var(--paper-alt);color:var(--ink-700);
  font-size:15px;font-weight:700;transition:transform .2s var(--ease),background .2s var(--ease);
}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--brand-100);color:var(--brand-600)}
.faq-answer{padding:0 0 24px;font-size:15px;line-height:1.8;color:var(--ink-700);max-width:860px}

/* ---------- CTA ---------- */
.cta-wrap{padding:80px 0 0}
.cta-band{
  position:relative;overflow:hidden;background:var(--ink-900);
  border-radius:var(--r-block);padding:60px 56px;color:#fff;
}
.cta-band::after{
  content:"";position:absolute;right:-150px;bottom:-200px;width:460px;height:460px;border-radius:50%;
  border:1px solid rgba(15,191,97,.35);box-shadow:inset 0 0 0 64px rgba(15,191,97,.05);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:1;max-width:640px}
.cta-band h2{font-size:clamp(24px,3vw,32px);font-weight:800;line-height:1.3;color:#fff;margin-bottom:14px}
.cta-band p{font-size:15.5px;line-height:1.8;color:rgba(255,255,255,.76);margin-bottom:28px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.78);margin-top:96px;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.25fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:320px}
.qr-slot{
  margin-top:18px;width:92px;height:92px;border-radius:12px;
  border:1px dashed rgba(255,255,255,.28);
  display:grid;place-items:center;text-align:center;
  font-size:12px;line-height:1.5;color:rgba(255,255,255,.55);
}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px;font-size:14px}
.footer-links a{color:rgba(255,255,255,.72);transition:color .16s var(--ease)}
.footer-links a:hover{color:var(--brand);text-decoration:underline}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(255,255,255,.7)}
.footer-contact strong{color:rgba(255,255,255,.92);font-weight:600}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0;display:flex;align-items:center;justify-content:space-between;
  gap:16px;font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a:hover{color:var(--brand);text-decoration:underline}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .page-hero-inner{grid-template-columns:minmax(0,1fr) 280px;gap:40px}
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .section{padding:80px 0}
}
@media (max-width:768px){
  :root{--head-h:64px}
  .container{padding:0 24px}
  .nav-links{display:none}
  .menu-btn{display:grid}
  .header-actions .btn{display:none}
  .page-hero{padding:calc(var(--head-h) + 44px) 0 48px}
  .page-hero-inner{grid-template-columns:1fr;gap:32px}
  .hero-stats{grid-template-columns:1fr;gap:14px}
  .section{padding:60px 0}
  .section-tight{padding:52px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px}
  .metric-grid{grid-template-columns:1fr}
  .compare{grid-template-columns:1fr}
  .compare-divider{height:1px;width:auto}
  .compare-col{padding:28px 22px}
  .band{grid-template-columns:64px minmax(0,1fr);gap:18px;padding:24px 0}
  .band-num{font-size:28px}
  .step{grid-template-columns:56px minmax(0,1fr);gap:18px}
  .step-num{width:56px;height:56px;font-size:17px}
  .step::before{left:27px;top:56px}
  .cta-band{padding:40px 24px;border-radius:16px}
  .cta-actions{flex-direction:column;align-items:stretch}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;text-align:left}
  .site-footer{margin-top:64px}
}
@media (max-width:520px){
  .container{padding:0 20px}
  .page-hero h1{font-size:29px}
  .page-hero-lead{font-size:15.5px}
  .metric-card{padding:22px 18px}
  .faq-item summary{font-size:15.5px;padding:18px 0}
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    transition-duration:.01ms !important;
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
  }
}