/* roulang page: index */
:root{
  --ink:#0F1110;
  --ink-soft:#1B1E1C;
  --paper:#F5F4EF;
  --paper-2:#EDECE6;
  --lime:#D8FF4A;
  --lime-deep:#C6EC37;
  --coral:#FF5A36;
  --mist:#E4E3DD;
  --gray:#6B6F6A;
  --gray-2:#2A2D2B;
  --radius:6px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(15,17,16,.06);
  --shadow-2:0 10px 30px rgba(15,17,16,.10);
  --border:1px solid rgba(15,17,16,.10);
  --border-dark:1px solid rgba(245,244,239,.14);
  --font-cn:"HarmonyOS Sans","MiSans","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"SFMono-Regular",Menlo,Consolas,"Roboto Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease;}
a:hover{color:var(--ink);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:2px;}

.container-x{
  width:100%;
  max-width:1320px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1000;
  background:rgba(245,244,239,0);
  transition:background .22s ease,box-shadow .22s ease,border-color .22s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:var(--paper);
  border-bottom:1px solid rgba(15,17,16,.10);
  box-shadow:0 1px 2px rgba(15,17,16,.06);
}
.nav-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  height:78px;
}
.nav-side{display:flex;align-items:center;gap:30px;}
.nav-side.right{justify-content:flex-end;}
.nav-link-x{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--gray-2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link-x::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .2s ease;
}
.nav-link-x:hover{color:var(--ink);}
.nav-link-x:hover::after{transform:scaleX(1);}
.nav-link-x.active{color:var(--ink);font-weight:700;}
.nav-link-x.active::after{transform:scaleX(1);}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:19px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--ink);
  white-space:nowrap;
}
.brand-mark{
  width:28px;height:28px;
  border-radius:6px;
  background:var(--ink);
  display:grid;
  place-items:center;
  flex:0 0 auto;
}
.brand-mark span{
  display:block;
  width:12px;height:12px;
  background:var(--lime);
  border-radius:2px;
}
.nav-cta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--lime);
  color:var(--ink);
  font-size:14.5px;
  font-weight:700;
  padding:10px 20px;
  border-radius:var(--radius);
  border:1px solid var(--ink);
  transition:transform .18s ease,background .18s ease;
}
.nav-cta:hover{background:var(--lime-deep);transform:translateY(-1px);color:var(--ink);}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid rgba(15,17,16,.14);
  background:transparent;
  border-radius:var(--radius);
  align-items:center;
  justify-content:center;
  font-size:17px;
}

/* ---------- 抽屉菜单 ---------- */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(15,17,16,.45);
  opacity:0;visibility:hidden;
  transition:opacity .24s ease,visibility .24s ease;
  z-index:1090;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;
  top:0;left:0;bottom:0;
  width:82%;
  max-width:340px;
  background:var(--paper);
  z-index:1100;
  transform:translateX(-102%);
  transition:transform .28s cubic-bezier(.4,0,.2,1);
  display:flex;
  flex-direction:column;
  padding:22px 20px 28px;
  overflow-y:auto;
  border-right:1px solid rgba(15,17,16,.10);
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer-close{
  width:40px;height:40px;border:1px solid rgba(15,17,16,.14);
  background:transparent;border-radius:var(--radius);
  display:grid;place-items:center;
}
.drawer-nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:52px;
  font-size:16px;
  font-weight:500;
  border-bottom:1px solid rgba(15,17,16,.08);
  color:var(--gray-2);
}
.drawer-nav a.active{color:var(--ink);font-weight:700;box-shadow:inset 2px 0 0 var(--lime);padding-left:12px;}
.drawer-cta{
  margin-top:22px;
  display:block;
  text-align:center;
  background:var(--lime);
  border:1px solid var(--ink);
  border-radius:var(--radius);
  padding:14px;
  font-weight:700;
}

/* ---------- 倒计时条 ---------- */
.countdown-bar{
  background:var(--ink);
  color:var(--paper);
  position:relative;
}
.countdown-bar.hidden{display:none;}
.cd-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:46px;
  padding:6px 0;
}
.cd-tag{
  display:inline-flex;
  align-items:center;
  gap:7px;
  background:var(--coral);
  color:#fff;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.02em;
  border-radius:var(--radius-pill);
  padding:4px 12px;
  white-space:nowrap;
}
.cd-group{
  display:flex;
  align-items:center;
  gap:10px;
  font-variant-numeric:tabular-nums;
}
.cd-cell{
  display:flex;
  flex-direction:column;
  align-items:center;
  min-width:46px;
}
.cd-num{
  font-family:var(--mono);
  font-size:24px;
  font-weight:800;
  line-height:1;
  color:var(--lime);
  font-variant-numeric:tabular-nums;
}
.cd-unit{font-size:11px;color:rgba(245,244,239,.6);line-height:1.4;margin-top:3px;}
.cd-sep{width:1px;height:24px;background:rgba(245,244,239,.2);}
.cd-actions{display:flex;align-items:center;gap:16px;}
.cd-link{
  font-size:13.5px;
  color:rgba(245,244,239,.82);
  border-bottom:1px solid rgba(245,244,239,.35);
  padding-bottom:1px;
}
.cd-link:hover{color:var(--lime);border-color:var(--lime);}
.cd-close{
  background:transparent;border:0;color:rgba(245,244,239,.55);
  width:30px;height:30px;border-radius:var(--radius);
  display:grid;place-items:center;
}
.cd-close:hover{color:var(--paper);background:rgba(245,244,239,.1);}

/* ---------- 通用板块 ---------- */
.section{padding:110px 0;}
.section.tight{padding:80px 0;}
.section.dark{background:var(--ink);color:var(--paper);}
.section.mist{background:var(--paper-2);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--gray);
  text-transform:uppercase;
  margin-bottom:16px;
}
.eyebrow::before{
  content:"";
  width:20px;height:2px;background:var(--lime);display:block;
}
.section.dark .eyebrow{color:rgba(245,244,239,.62);}
.h2-x{
  font-size:clamp(28px,3vw,36px);
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.01em;
}
.lead-x{
  font-size:16.5px;
  color:var(--gray);
  line-height:1.85;
  max-width:640px;
}
.section.dark .lead-x{color:rgba(245,244,239,.7);}

/* 按钮 */
.btn-x{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  font-size:15.5px;
  font-weight:700;
  padding:14px 28px;
  border-radius:var(--radius);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary-x{background:var(--lime);color:var(--ink);border-color:var(--ink);}
.btn-primary-x:hover{background:var(--lime-deep);transform:translateY(-1px);color:var(--ink);}
.btn-primary-x:active{transform:translateY(0);}
.btn-ghost-x{background:transparent;color:var(--ink);border-color:rgba(15,17,16,.22);}
.btn-ghost-x:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.section.dark .btn-primary-x{background:var(--paper);color:var(--ink);border-color:var(--paper);}
.section.dark .btn-primary-x:hover{background:#fff;color:var(--ink);}
.section.dark .btn-ghost-x{color:var(--paper);border-color:rgba(245,244,239,.3);}
.section.dark .btn-ghost-x:hover{background:var(--paper);color:var(--ink);border-color:var(--paper);}
.btn-x[disabled]{opacity:.4;cursor:not-allowed;}

/* ---------- Hero ---------- */
.hero{
  padding:170px 0 96px;
  position:relative;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(15,17,16,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(15,17,16,.05) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse at 78% 30%,#000 0%,transparent 72%);
  mask-image:radial-gradient(ellipse at 78% 30%,#000 0%,transparent 72%);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
}
.hero-title{
  font-size:clamp(40px,5.2vw,76px);
  font-weight:800;
  line-height:1.08;
  letter-spacing:-.02em;
  margin-bottom:22px;
}
.hero-title em{
  font-style:normal;
  position:relative;
  white-space:nowrap;
}
.hero-title em::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:6px;
  height:12px;
  background:var(--lime);
  z-index:-1;
  border-radius:2px;
}
.hero-sub{
  font-size:17px;
  color:var(--gray);
  line-height:1.9;
  max-width:600px;
  margin-bottom:32px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:20px;
}
.hero-note{
  display:flex;
  align-items:center;
  gap:9px;
  font-size:13.5px;
  color:var(--gray);
}
.hero-note i{color:var(--lime-deep);}
.hero-media{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  aspect-ratio:4/5;
  border:var(--border);
  background:var(--mist);
  box-shadow:var(--shadow-2);
}
.hero-media img{
  width:100%;height:100%;
  object-fit:cover;
}
.hero-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    repeating-linear-gradient(0deg,rgba(15,17,16,.06) 0 1px,transparent 1px 6px);
  opacity:.55;
  pointer-events:none;
}
.hero-badge{
  position:absolute;
  left:18px;bottom:18px;
  right:18px;
  background:rgba(245,244,239,.94);
  border:var(--border);
  border-radius:var(--radius);
  padding:14px 16px;
  display:flex;
  align-items:center;
  gap:12px;
  font-size:14px;
  font-weight:600;
}
.hero-badge i{color:var(--ink);}
.hero-badge small{display:block;font-size:12.5px;font-weight:500;color:var(--gray);}

/* ---------- 数据条 ---------- */
.stat-strip{background:var(--ink);color:var(--paper);}
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:rgba(245,244,239,.14);
  border-radius:var(--radius);
  overflow:hidden;
}
.stat-cell{
  background:var(--ink);
  padding:34px 26px;
}
.stat-num{
  font-family:var(--mono);
  font-size:38px;
  font-weight:800;
  line-height:1.05;
  color:var(--lime);
  font-variant-numeric:tabular-nums;
}
.stat-num span{font-size:18px;margin-left:2px;}
.stat-label{
  margin-top:8px;
  font-size:14px;
  color:rgba(245,244,239,.68);
  line-height:1.7;
}

/* ---------- 卖点 ---------- */
.feature-wrap{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:56px;
  align-items:start;
}
.feature-side{position:sticky;top:120px;}
.feature-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.feature-card{
  background:var(--paper);
  border:var(--border);
  border-radius:var(--radius);
  padding:28px 26px 26px;
  box-shadow:var(--shadow-1);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  height:100%;
}
.feature-card:hover{
  transform:translateY(-4px);
  border-color:var(--lime);
  box-shadow:var(--shadow-2);
}
.feature-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:16px;
}
.feature-index{
  font-family:var(--mono);
  font-size:13px;
  font-weight:700;
  color:var(--gray);
  letter-spacing:.08em;
}
.feature-icon{
  width:40px;height:40px;
  border-radius:var(--radius);
  background:var(--ink);
  color:var(--lime);
  display:grid;place-items:center;
  font-size:16px;
}
.feature-card h3{font-size:20px;font-weight:600;line-height:1.4;margin-bottom:10px;}
.feature-card p{font-size:15px;color:var(--gray);line-height:1.8;}

/* ---------- 图墙 ---------- */
.gallery-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:36px;
  flex-wrap:wrap;
}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;
  align-items:center;
  font-size:13.5px;
  font-weight:600;
  padding:8px 18px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(15,17,16,.14);
  background:transparent;
  color:var(--gray-2);
  cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.chip:hover{border-color:var(--ink);color:var(--ink);}
.chip.active{background:var(--lime);border-color:var(--ink);color:var(--ink);}
.gallery{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  grid-auto-rows:200px;
  gap:18px;
}
.gallery-item{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius);
  border:var(--border);
  background:var(--mist);
  cursor:pointer;
}
.gallery-item.tall{grid-row:span 2;}
.gallery-item.wide{grid-column:span 2;}
.gallery-item img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .32s ease;
}
.gallery-item:hover img{transform:scale(1.04);}
.gallery-mask{
  position:absolute;
  inset:0;
  background:linear-gradient(to top,rgba(15,17,16,.82) 0%,rgba(15,17,16,.28) 42%,rgba(15,17,16,0) 72%);
  opacity:0;
  transition:opacity .28s ease;
}
.gallery-item:hover .gallery-mask{opacity:1;}
.gallery-info{
  position:absolute;
  left:16px;right:16px;bottom:14px;
  color:var(--paper);
  transform:translateY(6px);
  opacity:0;
  transition:transform .28s ease,opacity .28s ease;
}
.gallery-item:hover .gallery-info{transform:translateY(0);opacity:1;}
.gallery-tag{
  display:inline-block;
  font-size:11.5px;
  font-weight:700;
  background:var(--lime);
  color:var(--ink);
  border-radius:var(--radius-pill);
  padding:3px 11px;
  margin-bottom:8px;
}
.gallery-info h3{font-size:15.5px;font-weight:600;line-height:1.5;}

/* ---------- 报名 CTA ---------- */
.cta-band{
  background:var(--ink);
  color:var(--paper);
  border-radius:var(--radius);
  padding:56px 52px;
  display:grid;
  grid-template-columns:5fr 6fr;
  gap:56px;
  align-items:start;
}
.trust-list{margin-top:26px;display:grid;gap:14px;}
.trust-list li{
  display:flex;
  align-items:flex-start;
  gap:11px;
  font-size:15px;
  color:rgba(245,244,239,.78);
  line-height:1.75;
}
.trust-list i{color:var(--lime);margin-top:6px;font-size:13px;}
.form-card{
  background:var(--paper);
  color:var(--ink);
  border-radius:var(--radius);
  padding:32px 30px;
  box-shadow:var(--shadow-2);
}
.form-card h3{font-size:20px;font-weight:700;margin-bottom:6px;}
.form-card .form-hint{font-size:13.5px;color:var(--gray);margin-bottom:24px;}
.field{margin-bottom:18px;}
.field label{
  display:block;
  font-size:13.5px;
  font-weight:600;
  margin-bottom:8px;
  color:var(--gray-2);
}
.field input[type="text"],
.field input[type="tel"],
.field select{
  width:100%;
  height:48px;
  padding:0 14px;
  border:1px solid rgba(15,17,16,.16);
  border-radius:var(--radius);
  background:#fff;
  font-size:15px;
  transition:border-color .16s ease,box-shadow .16s ease;
  appearance:none;
}
.field select{background-image:none;}
.field input:focus,
.field select:focus{
  outline:none;
  border-color:var(--lime);
  box-shadow:0 0 0 3px rgba(216,255,74,.45);
}
.check-row{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:13.5px;
  color:var(--gray);
  line-height:1.7;
  margin-bottom:22px;
}
.check-row input{
  appearance:none;
  width:18px;height:18px;
  flex:0 0 auto;
  margin-top:4px;
  border:1px solid rgba(15,17,16,.25);
  border-radius:3px;
  background:#fff;
  cursor:pointer;
  position:relative;
  transition:background .16s ease,border-color .16s ease;
}
.check-row input:checked{background:var(--lime);border-color:var(--ink);}
.check-row input:checked::after{
  content:"";
  position:absolute;
  left:5px;top:1px;
  width:5px;height:10px;
  border:solid var(--ink);
  border-width:0 2px 2px 0;
  transform:rotate(45deg);
}
.form-submit{width:100%;}
.form-foot{
  margin-top:14px;
  font-size:12.5px;
  color:var(--gray);
  line-height:1.7;
}
.form-msg{
  margin-top:14px;
  font-size:13.5px;
  font-weight:600;
  color:var(--ink);
  background:rgba(216,255,74,.4);
  border:1px solid rgba(15,17,16,.12);
  border-radius:var(--radius);
  padding:10px 14px;
  display:none;
}
.form-msg.show{display:block;}

/* ---------- 最新信息 ---------- */
.news-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
  margin-bottom:36px;
  flex-wrap:wrap;
}
.news-list{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.news-card{
  display:flex;
  gap:20px;
  background:var(--paper);
  border:var(--border);
  border-radius:var(--radius);
  padding:18px;
  box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  height:100%;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(15,17,16,.2);}
.news-thumb{
  flex:0 0 auto;
  width:168px;
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--mist);
  aspect-ratio:16/11;
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .32s ease;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{min-width:0;display:flex;flex-direction:column;}
.news-meta{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:12.5px;
  color:var(--gray);
  margin-bottom:8px;
}
.badge-x{
  display:inline-flex;
  align-items:center;
  font-size:12px;
  font-weight:600;
  border:1px solid rgba(15,17,16,.16);
  border-radius:var(--radius-pill);
  padding:2px 10px;
  color:var(--gray-2);
  background:transparent;
}
.news-title{
  font-size:17.5px;
  font-weight:600;
  line-height:1.5;
  margin-bottom:8px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-title a:hover{text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--lime);text-decoration-thickness:2px;}
.news-summary{
  font-size:14.5px;
  color:var(--gray);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:12px;
}
.news-more{
  margin-top:auto;
  font-size:13.5px;
  font-weight:600;
  color:var(--ink);
}
.news-more i{transition:transform .2s ease;margin-left:6px;font-size:11px;}
.news-card:hover .news-more i{transform:translateX(4px);}
.news-empty{
  grid-column:1 / -1;
  background:var(--paper-2);
  border:1px dashed rgba(15,17,16,.2);
  border-radius:var(--radius);
  padding:52px 24px;
  text-align:center;
}
.news-empty i{font-size:26px;color:var(--gray);margin-bottom:14px;display:block;}
.news-empty p{font-size:15px;color:var(--gray);margin-bottom:14px;}
.news-empty a{font-weight:600;border-bottom:2px solid var(--lime);padding-bottom:2px;}

/* ---------- 反馈 ---------- */
.voice-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.voice-card{
  background:var(--paper);
  border:var(--border);
  border-radius:var(--radius);
  padding:28px 26px;
  box-shadow:var(--shadow-1);
  display:flex;
  flex-direction:column;
  height:100%;
  transition:transform .22s ease,box-shadow .22s ease;
}
.voice-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.voice-stars{color:var(--lime-deep);font-size:13px;margin-bottom:14px;letter-spacing:2px;}
.voice-card p{font-size:15px;color:var(--gray-2);line-height:1.85;margin-bottom:20px;}
.voice-user{
  margin-top:auto;
  display:flex;
  align-items:center;
  gap:12px;
  padding-top:16px;
  border-top:1px solid rgba(15,17,16,.08);
}
.voice-avatar{
  width:40px;height:40px;
  border-radius:var(--radius-pill);
  background:var(--ink);
  color:var(--lime);
  display:grid;place-items:center;
  font-size:14px;font-weight:700;
  flex:0 0 auto;
}
.voice-user strong{display:block;font-size:14px;font-weight:600;}
.voice-user small{font-size:12.5px;color:var(--gray);}

/* ---------- FAQ ---------- */
.faq-wrap{
  display:grid;
  grid-template-columns:4fr 8fr;
  gap:56px;
  align-items:start;
}
.accordion-x .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid rgba(15,17,16,.12);
  border-radius:0;
}
.accordion-x .accordion-button{
  background:transparent !important;
  color:var(--ink) !important;
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  padding:22px 44px 22px 44px;
  box-shadow:none !important;
  border-radius:0 !important;
  position:relative;
  transition:color .18s ease,background .18s ease;
}
.accordion-x .accordion-button::before{
  content:"";
  position:absolute;
  left:0;top:24px;bottom:24px;
  width:2px;
  background:var(--lime);
  opacity:0;
  transition:opacity .18s ease;
}
.accordion-x .accordion-button:not(.collapsed)::before{opacity:1;}
.accordion-x .accordion-button:hover{background:rgba(216,255,74,.10) !important;}
.accordion-x .accordion-button::after{
  background-image:none;
  content:"\f067";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:13px;
  color:var(--gray);
  width:auto;height:auto;
  transform:none;
  transition:transform .22s ease,color .22s ease;
  position:absolute;
  right:8px;
}
.accordion-x .accordion-button:not(.collapsed)::after{
  content:"\f068";
  transform:rotate(180deg);
  color:var(--ink);
}
.accordion-x .accordion-button:focus{box-shadow:none !important;}
.faq-index{
  font-family:var(--mono);
  font-size:12.5px;
  font-weight:700;
  color:var(--gray);
  margin-right:12px;
  letter-spacing:.06em;
}
.accordion-x .accordion-body{
  padding:0 44px 26px 44px;
  font-size:15.5px;
  line-height:1.9;
  color:var(--gray);
  max-width:780px;
}

/* ---------- 底部 CTA ---------- */
.bottom-cta{
  background:var(--ink);
  color:var(--paper);
  border-radius:var(--radius);
  padding:52px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
}
.bottom-cta h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.3;margin-bottom:10px;}
.bottom-cta p{font-size:15.5px;color:rgba(245,244,239,.7);max-width:560px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:rgba(245,244,239,.82);
  padding:76px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:44px;
  padding-bottom:48px;
  border-bottom:1px solid rgba(245,244,239,.14);
}
.footer-brand .brand{color:var(--paper);margin-bottom:18px;}
.footer-brand .brand-mark{background:var(--lime);}
.footer-brand .brand-mark span{background:var(--ink);}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(245,244,239,.62);max-width:320px;}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:var(--paper);
  margin-bottom:18px;
  letter-spacing:.04em;
}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14px;color:rgba(245,244,239,.66);}
.footer-col a:hover{color:var(--lime);}
.footer-col li span{font-size:14px;color:rgba(245,244,239,.66);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:24px 0 30px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(245,244,239,.5);
}
.footer-bottom a{color:rgba(245,244,239,.62);}
.footer-bottom a:hover{color:var(--lime);}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease;}
.reveal.in{opacity:1;transform:translateY(0);}

@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition-duration:.01ms !important;}
  .reveal{transform:none;opacity:1;}
  .gallery-item:hover img{transform:none;}
  .news-card:hover{transform:none;}
  .feature-card:hover{transform:none;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1399px){
  .container-x{max-width:1140px;}
}
@media (max-width:1199px){
  .container-x{max-width:960px;}
  .hero-grid{gap:40px;}
  .feature-wrap{gap:40px;}
  .faq-wrap{gap:40px;}
  .gallery{grid-auto-rows:184px;}
}
@media (max-width:991px){
  .container-x{max-width:720px;padding:0 22px;}
  .nav-side,.nav-cta,.cd-close{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-inner{grid-template-columns:auto 1fr auto;height:66px;gap:12px;}
  .brand{justify-self:center;font-size:17px;}
  .nav-right-mobile{display:inline-flex;}
  .section{padding:76px 0;}
  .section.tight{padding:60px 0;}
  .hero{padding:132px 0 68px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-media{aspect-ratio:16/10;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .feature-wrap{grid-template-columns:1fr;gap:32px;}
  .feature-side{position:static;}
  .gallery{grid-template-columns:repeat(2,1fr);grid-auto-rows:180px;}
  .cta-band{grid-template-columns:1fr;gap:36px;padding:44px 32px;}
  .news-list{grid-template-columns:1fr;}
  .voice-grid{grid-template-columns:1fr;}
  .faq-wrap{grid-template-columns:1fr;gap:28px;}
  .bottom-cta{padding:40px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cd-num{font-size:20px;}
  .cd-cell{min-width:40px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container-x{padding:0 20px;}
  .hero{padding:120px 0 56px;}
  .hero-title{font-size:clamp(30px,8.4vw,42px);}
  .hero-sub{font-size:15.5px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn-x{width:100%;}
  .section{padding:60px 0;}
  .stat-cell{padding:26px 20px;}
  .stat-num{font-size:30px;}
  .feature-grid{grid-template-columns:1fr;}
  .feature-card{padding:24px 22px;}
  .gallery-head{flex-direction:column;align-items:flex-start;gap:20px;}
  .gallery{gap:14px;grid-auto-rows:160px;}
  .gallery-item.wide{grid-column:span 2;}
  .cta-band{padding:36px 22px;border-radius:var(--radius);}
  .form-card{padding:26px 22px;}
  .news-card{flex-direction:column;gap:16px;}
  .news-thumb{width:100%;aspect-ratio:16/9;}
  .accordion-x .accordion-button{font-size:16px;padding:18px 40px 18px 34px;}
  .accordion-x .accordion-body{padding:0 34px 22px 34px;}
  .bottom-cta{padding:34px 24px;}
  .bottom-cta .btn-x{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .cd-inner{gap:10px;}
  .cd-actions{gap:10px;}
  .cd-link{font-size:12.5px;}
  .cd-unit{display:none;}
}
@media (max-width:479px){
  .gallery{grid-template-columns:1fr;grid-auto-rows:200px;}
  .gallery-item.wide,.gallery-item.tall{grid-column:span 1;grid-row:span 1;}
  .cd-cell{min-width:36px;}
  .cd-num{font-size:18px;}
  .cd-tag{font-size:11.5px;padding:3px 10px;}
}

/* roulang page: category1 */
:root{
  --ink:#0F1110;
  --paper:#F5F4EF;
  --paper-2:#EDECE5;
  --lime:#D8FF4A;
  --coral:#FF5A36;
  --mist:#E4E3DD;
  --mid:#6B6F6A;
  --deep:#2A2D2B;
  --line:rgba(15,17,16,.10);
  --line-dark:rgba(245,244,239,.14);
  --radius:6px;
  --shadow-1:0 1px 2px rgba(15,17,16,.06);
  --shadow-2:0 10px 30px rgba(15,17,16,.10);
  --font:"HarmonyOS Sans","MiSans","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--font);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-0.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:var(--lime);color:var(--ink)}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:3px}

.container-x{width:100%;max-width:1320px;margin:0 auto;padding:0 24px}
.section{padding:104px 0}
.section-tight{padding:72px 0}
.section-dark{background:var(--ink);color:var(--paper)}
.section-soft{background:var(--paper-2)}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.14em;color:var(--mid);
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--lime);display:block}
.section-dark .eyebrow{color:rgba(245,244,239,.68)}

h1{font-size:clamp(32px,4.4vw,52px);line-height:1.15;font-weight:800}
h2{font-size:clamp(26px,3vw,36px);line-height:1.25}
h3{font-size:clamp(19px,1.6vw,23px);line-height:1.4;font-weight:700}
.lead{font-size:17px;color:var(--mid);line-height:1.85}
.section-dark .lead{color:rgba(245,244,239,.72)}
.muted{color:var(--mid);font-size:14px;line-height:1.7}
.section-dark .muted{color:rgba(245,244,239,.6)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(245,244,239,.94);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 6px 20px rgba(15,17,16,.05)}
.header-inner{display:flex;align-items:center;gap:18px;min-height:74px}
.nav-side{display:flex;align-items:center;gap:30px;flex:1}
.nav-side.right{justify-content:flex-end}
.nav-link-x{
  position:relative;font-size:15px;font-weight:500;color:var(--deep);
  padding:6px 0;transition:color .18s ease;
}
.nav-link-x::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--lime);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-link-x:hover{color:var(--ink)}
.nav-link-x:hover::after{transform:scaleX(1)}
.nav-link-x.active{font-weight:700;color:var(--ink)}
.nav-link-x.active::after{transform:scaleX(1)}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:17px;font-weight:800;letter-spacing:-0.01em;white-space:nowrap;
}
.brand-mark{
  width:26px;height:26px;border-radius:5px;background:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-mark span{width:11px;height:11px;background:var(--lime);border-radius:2px}
.header-cta{
  flex:0 0 auto;background:var(--lime);color:var(--ink);font-weight:700;font-size:15px;
  padding:11px 22px;border-radius:var(--radius);transition:transform .18s ease,filter .18s ease;
}
.header-cta:hover{filter:brightness(.95);transform:translateY(-1px)}
.header-cta:active{transform:translateY(0)}
.menu-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--radius);
  background:transparent;align-items:center;justify-content:center;cursor:pointer;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}

.drawer{
  position:fixed;top:0;left:0;bottom:0;width:300px;max-width:86vw;z-index:1055;
  background:var(--ink);color:var(--paper);padding:26px 22px;
  transform:translateX(-102%);transition:transform .26s ease;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer .drawer-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16px;margin-bottom:22px}
.drawer a.drawer-link{
  display:flex;align-items:center;min-height:52px;font-size:15px;font-weight:500;
  border-bottom:1px solid var(--line-dark);color:rgba(245,244,239,.86);
}
.drawer a.drawer-link.active{color:var(--lime);font-weight:700}
.drawer .drawer-cta{
  display:block;margin-top:22px;text-align:center;
  background:var(--lime);color:var(--ink);font-weight:700;padding:13px 18px;border-radius:var(--radius);
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,17,16,.5);z-index:1050;opacity:0;visibility:hidden;
  transition:opacity .24s ease,visibility .24s ease;
}
.drawer-mask.open{opacity:1;visibility:visible}

/* ---------- hero ---------- */
.hero{
  position:relative;background:var(--ink);color:var(--paper);overflow:hidden;
  padding:96px 0 88px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.30;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(245,244,239,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(245,244,239,.06) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,0));
}
.hero .container-x{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.25fr .95fr;gap:56px;align-items:center}
.hero h1{color:#fff;max-width:16em}
.hero h1 em{font-style:normal;color:var(--lime)}
.hero-sub{margin-top:22px;font-size:17px;line-height:1.9;color:rgba(245,244,239,.78);max-width:34em}
.hero-actions{margin-top:34px;display:flex;flex-wrap:wrap;gap:14px}
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--radius);font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary-x{background:var(--lime);color:var(--ink)}
.btn-primary-x:hover{filter:brightness(.94);transform:translateY(-1px)}
.btn-primary-x:active{transform:translateY(0)}
.btn-ghost-x{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost-x:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.hero .btn-ghost-x{border-color:rgba(245,244,239,.34);color:var(--paper)}
.hero .btn-ghost-x:hover{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.hero-trust{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13px;color:rgba(245,244,239,.6)}
.hero-trust span{display:inline-flex;align-items:center;gap:8px}
.hero-trust span::before{content:"";width:6px;height:6px;background:var(--lime);border-radius:50%}

.hero-panel{
  background:rgba(42,45,43,.72);
  border:1px solid var(--line-dark);border-radius:var(--radius);
  padding:26px 24px;
}
.hero-panel h3{font-size:17px;color:#fff;margin-bottom:6px}
.hero-panel .panel-note{font-size:13px;color:rgba(245,244,239,.6);margin-bottom:18px}
.hero-panel ol{counter-reset:step;display:grid;gap:2px}
.hero-panel ol li{
  counter-increment:step;display:flex;gap:12px;align-items:baseline;
  padding:11px 0;border-bottom:1px dashed var(--line-dark);font-size:14.5px;color:rgba(245,244,239,.86);
}
.hero-panel ol li:last-child{border-bottom:0}
.hero-panel ol li::before{
  content:counter(step,decimal-leading-zero);
  font-size:12px;font-weight:700;color:var(--lime);letter-spacing:.04em;flex:0 0 26px;
}
.hero-stats{
  margin-top:22px;padding-top:18px;border-top:1px solid var(--line-dark);
  display:grid;grid-template-columns:repeat(3,1fr);gap:14px;
}
.hero-stats b{display:block;font-size:26px;font-weight:800;color:var(--lime);line-height:1.1}
.hero-stats span{font-size:12.5px;color:rgba(245,244,239,.58)}

/* ---------- breadcrumb ---------- */
.crumb-bar{background:var(--paper-2);border-bottom:1px solid var(--line)}
.crumb-bar .container-x{display:flex;align-items:center;min-height:52px}
.crumb{font-size:13px;color:var(--mid);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.crumb a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:4px}
.crumb .sep{color:var(--mist)}
.crumb .now{color:var(--ink);font-weight:600}

/* ---------- pre-check ---------- */
.split{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.split h2{margin-top:16px}
.split .lead{margin-top:16px;max-width:30em}
.visual-card{
  margin-top:26px;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);background:var(--mist);
}
.visual-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.visual-card figcaption{
  padding:12px 16px;font-size:13px;color:var(--mid);background:var(--paper);
  border-top:1px solid var(--line);
}
.check-list{display:grid;gap:14px}
.check-item{
  display:grid;grid-template-columns:auto 1fr;gap:18px;
  padding:22px 24px;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow-1);
  transition:border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.check-item:hover{border-color:var(--lime);transform:translateY(-4px);box-shadow:var(--shadow-2)}
.check-item .num{
  font-size:13px;font-weight:800;color:var(--ink);background:var(--lime);
  width:38px;height:38px;border-radius:var(--radius);
  display:flex;align-items:center;justify-content:center;
}
.check-item h3{font-size:18px}
.check-item p{margin-top:6px;font-size:14.5px;color:var(--mid);line-height:1.8}

/* ---------- timeline ---------- */
.section-head{max-width:760px}
.section-head h2{margin-top:16px}
.section-head .lead{margin-top:14px}
.timeline{margin-top:56px;position:relative;padding-left:6px}
.timeline::before{
  content:"";position:absolute;left:29px;top:14px;bottom:14px;width:2px;
  background:linear-gradient(180deg,var(--lime),var(--mist));
}
.tl-item{position:relative;display:grid;grid-template-columns:60px 1fr;gap:28px;padding-bottom:26px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  width:20px;height:20px;border-radius:50%;background:var(--paper);
  border:2px solid var(--lime);margin:24px 0 0 20px;position:relative;z-index:2;
}
.tl-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 28px;box-shadow:var(--shadow-1);
  transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.tl-card:hover{border-color:var(--lime);box-shadow:var(--shadow-2);transform:translateY(-4px)}
.tl-card .step-no{
  font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--mid);
}
.tl-card h3{margin-top:8px;font-size:21px}
.tl-card p{margin-top:10px;font-size:15px;color:var(--mid);line-height:1.85}
.tl-points{margin-top:16px;display:grid;gap:8px}
.tl-points li{display:flex;gap:10px;font-size:14px;color:var(--deep)}
.tl-points li::before{content:"";width:6px;height:6px;margin-top:11px;background:var(--lime);border-radius:50%;flex:0 0 auto}

/* ---------- dark issues ---------- */
.issue-grid{margin-top:48px;display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.issue-card{
  background:var(--deep);border:1px solid var(--line-dark);border-radius:var(--radius);
  padding:26px 26px 24px;transition:border-color .22s ease,transform .22s ease;
}
.issue-card:hover{border-color:var(--lime);transform:translateY(-4px)}
.issue-card .tag{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--ink);background:var(--lime);border-radius:999px;padding:4px 12px;
}
.issue-card .tag.warn{background:var(--coral);color:#fff}
.issue-card h3{margin-top:16px;font-size:19px;color:#fff}
.issue-card p{margin-top:10px;font-size:14.5px;color:rgba(245,244,239,.68);line-height:1.85}
.issue-media{
  margin-top:48px;display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch;
}
.issue-media .pic{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line-dark);background:var(--deep);
}
.issue-media .pic img{width:100%;height:100%;aspect-ratio:16/9;object-fit:cover}
.note-box{
  border:1px solid var(--line-dark);border-left:4px solid var(--coral);
  background:rgba(255,90,54,.08);border-radius:var(--radius);
  padding:22px 24px;display:flex;flex-direction:column;justify-content:center;
}
.note-box h3{font-size:17px;color:#fff}
.note-box p{margin-top:8px;font-size:14px;color:rgba(245,244,239,.7);line-height:1.8}

/* ---------- device table ---------- */
.table-wrap{
  margin-top:40px;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;background:var(--paper);
}
.table-scroll{overflow-x:auto}
table.device-table{width:100%;min-width:680px;border-collapse:collapse;font-size:14.5px}
.device-table thead th{
  background:var(--ink);color:var(--paper);font-weight:600;font-size:13.5px;
  text-align:left;padding:16px 20px;letter-spacing:.06em;white-space:nowrap;
}
.device-table tbody td{padding:16px 20px;border-bottom:1px solid var(--line);color:var(--deep);vertical-align:top}
.device-table tbody tr:nth-child(even){background:rgba(228,227,221,.42)}
.device-table tbody tr:last-child td{border-bottom:0}
.device-table tbody td:first-child{font-weight:700}
.pill{
  display:inline-block;font-size:12px;padding:4px 11px;border-radius:999px;
  border:1px solid var(--line);color:var(--mid);background:transparent;
}
.pill.solid{background:var(--lime);border-color:var(--lime);color:var(--ink);font-weight:600}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-side h2{margin-top:16px}
.faq-side .lead{margin-top:14px}
.faq-side .contat-card{
  margin-top:26px;padding:22px 24px;border:1px solid var(--line);
  border-radius:var(--radius);background:var(--paper);box-shadow:var(--shadow-1);
}
.faq-side .contat-card h3{font-size:17px}
.faq-side .contat-card p{margin-top:8px;font-size:14px;color:var(--mid)}
.faq-side .contat-card a{
  display:inline-flex;align-items:center;gap:8px;margin-top:16px;
  font-size:14px;font-weight:700;border-bottom:2px solid var(--lime);padding-bottom:2px;
}
.accordion{--bs-accordion-border-width:0;--bs-accordion-border-radius:0;--bs-accordion-inner-border-radius:0}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.accordion-button{
  background:transparent;color:var(--ink);font-weight:600;font-size:17px;
  padding:22px 8px 22px 26px;gap:12px;box-shadow:none;position:relative;
}
.accordion-button::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:2px;
  background:var(--lime);opacity:0;transition:opacity .2s ease;
}
.accordion-button:not(.collapsed){color:var(--ink);background:transparent;box-shadow:none}
.accordion-button:not(.collapsed)::before{opacity:1}
.accordion-button::after{
  background-image:none;
  content:"";width:12px;height:12px;border-right:2px solid var(--ink);
  border-bottom:2px solid var(--ink);transform:rotate(45deg);
  margin-left:auto;transition:transform .22s ease;
}
.accordion-button:not(.collapsed)::after{transform:rotate(-135deg)}
.accordion-button:focus{box-shadow:none;outline:2px solid var(--lime);outline-offset:-2px}
.accordion-button .q-no{
  font-size:12px;font-weight:800;color:var(--mid);letter-spacing:.08em;margin-right:4px;
}
.accordion-body{
  padding:0 26px 26px 26px;font-size:15px;color:var(--mid);line-height:1.9;max-width:780px;
}

/* ---------- CTA ---------- */
.cta-block{background:var(--ink);color:var(--paper)}
.cta-grid{display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center}
.cta-grid h2{margin-top:16px;color:#fff}
.cta-grid .lead{margin-top:16px;color:rgba(245,244,239,.72)}
.trust-list{margin-top:26px;display:grid;gap:12px}
.trust-list li{display:flex;gap:12px;font-size:15px;color:rgba(245,244,239,.82)}
.trust-list li::before{
  content:"";width:8px;height:8px;margin-top:9px;border-radius:2px;background:var(--lime);flex:0 0 auto;
}
.form-card{
  background:var(--paper);color:var(--ink);border-radius:var(--radius);
  padding:32px 30px;box-shadow:0 20px 50px rgba(0,0,0,.28);
}
.form-card h3{font-size:21px}
.form-card .form-note{margin-top:6px;font-size:13.5px;color:var(--mid)}
.field{margin-top:18px}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:8px;color:var(--deep)}
.field input,.field select{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);
  border-radius:var(--radius);background:#fff;font-size:15px;outline:none;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field input:focus,.field select:focus{
  border-color:var(--ink);box-shadow:0 0 0 3px rgba(216,255,74,.75);
}
.check-row{margin-top:18px;display:flex;gap:10px;align-items:flex-start}
.check-row input[type="checkbox"]{
  appearance:none;width:20px;height:20px;border:1px solid var(--line);
  border-radius:4px;background:#fff;margin-top:3px;flex:0 0 auto;cursor:pointer;position:relative;
}
.check-row input[type="checkbox"]:checked{background:var(--lime);border-color:var(--ink)}
.check-row input[type="checkbox"]:checked::after{
  content:"";position:absolute;left:6px;top:2px;width:6px;height:11px;
  border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);transform:rotate(45deg);
}
.check-row label{font-size:13.5px;color:var(--mid);line-height:1.7}
.form-card .btn-x{width:100%;margin-top:22px}
.form-foot{margin-top:14px;font-size:12.5px;color:var(--mid);text-align:center}
.form-msg{
  margin-top:14px;font-size:13.5px;padding:10px 14px;border-radius:var(--radius);
  border:1px solid var(--line);background:rgba(216,255,74,.34);color:var(--ink);display:none;
}
.form-msg.show{display:block}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(245,244,239,.8);padding:72px 0 26px}
.footer-grid{display:grid;grid-template-columns:2.1fr 1fr 1fr 1.3fr;gap:44px}
.footer-brand .brand{color:#fff;font-size:17px}
.footer-brand .brand-mark{background:var(--lime)}
.footer-brand .brand-mark span{background:var(--ink)}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.9;color:rgba(245,244,239,.6);max-width:32em}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:.06em;margin-bottom:18px}
.footer-col ul{display:grid;gap:12px}
.footer-col li{font-size:14px;color:rgba(245,244,239,.6)}
.footer-col a{font-size:14px;color:rgba(245,244,239,.72);transition:color .18s ease}
.footer-col a:hover{color:var(--lime)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line-dark);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(245,244,239,.45);
}

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

@media (max-width:1200px){
  .split,.faq-layout{gap:40px}
  .hero-grid{gap:40px}
}
@media (max-width:991px){
  .nav-side{display:none}
  .header-cta{display:none}
  .menu-toggle{display:inline-flex}
  .header-inner{justify-content:space-between}
  .brand{order:2;margin:0 auto}
  .menu-toggle{order:1}
  .header-inner::after{content:"";order:3;width:42px}
  .section{padding:80px 0}
  .hero{padding:76px 0 68px}
  .hero-grid{grid-template-columns:1fr}
  .split,.faq-layout,.cta-grid{grid-template-columns:1fr}
  .issue-media{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767px){
  .container-x{padding:0 20px}
  .section{padding:60px 0}
  .section-tight{padding:52px 0}
  .hero{padding:60px 0 56px}
  h1{font-size:clamp(28px,7.4vw,36px)}
  h2{font-size:clamp(23px,5.6vw,28px)}
  .hero-actions .btn-x{width:100%}
  .hero-stats{grid-template-columns:repeat(3,1fr);gap:10px}
  .hero-stats b{font-size:21px}
  .issue-grid{grid-template-columns:1fr;gap:16px}
  .timeline{padding-left:0}
  .timeline::before{left:11px}
  .tl-item{grid-template-columns:34px 1fr;gap:14px;padding-bottom:18px}
  .tl-dot{margin-left:2px;width:18px;height:18px}
  .tl-card{padding:22px 20px}
  .accordion-button{font-size:16px;padding:18px 6px 18px 20px}
  .accordion-body{padding:0 18px 22px 20px}
  .form-card{padding:26px 20px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:480px){
  .check-item{grid-template-columns:1fr;gap:12px}
  .hero-panel{padding:20px 18px}
  .issue-media .pic img{aspect-ratio:4/3}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
  .check-item:hover,.tl-card:hover,.issue-card:hover{transform:none}
}

/* roulang page: article */
:root{
  --ink:#0F1110;
  --paper:#F5F4EF;
  --lime:#D8FF4A;
  --lime-deep:#CBEE3B;
  --coral:#FF5A36;
  --mist:#E4E3DD;
  --gray:#6B6F6A;
  --dark-gray:#2A2D2B;
  --line:rgba(15,17,16,.10);
  --line-dark:rgba(245,244,239,.14);
  --radius:6px;
  --shadow-s:0 1px 2px rgba(15,17,16,.06);
  --shadow-h:0 10px 30px rgba(15,17,16,.10);
  --font:"HarmonyOS Sans","MiSans","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  letter-spacing:.004em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;border:0;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5,h6,p{margin:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:3px;}

.container-x{width:100%;max-width:1320px;margin:0 auto;padding:0 24px;}
@media (max-width:1399px){.container-x{max-width:1140px;}}
@media (max-width:1199px){.container-x{max-width:960px;}}
@media (max-width:991px){.container-x{max-width:720px;}}
@media (max-width:767px){.container-x{max-width:100%;padding:0 20px;}}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(245,244,239,.96);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-stuck{border-bottom-color:var(--line);box-shadow:0 1px 12px rgba(15,17,16,.07);}
.nav-wrap{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  gap:16px;min-height:78px;
}
.nav-side{display:flex;align-items:center;gap:30px;}
.nav-side.right{justify-content:flex-end;gap:22px;}
.nav-link-x{
  position:relative;display:inline-block;
  font-size:15px;font-weight:500;color:var(--dark-gray);
  padding:6px 0;white-space:nowrap;transition:color .18s ease;
}
.nav-link-x::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--lime);transition:width .2s ease;
}
.nav-link-x:hover{color:var(--ink);}
.nav-link-x:hover::after{width:100%;}
.nav-link-x.active{color:var(--ink);font-weight:700;}
.nav-link-x.active::after{width:100%;}

.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:20px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;
}
.brand-mark{
  width:26px;height:26px;border-radius:5px;background:var(--ink);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-mark span{display:block;width:11px;height:11px;background:var(--lime);border-radius:2px;}

.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--lime);color:var(--ink);
  font-size:15px;font-weight:700;line-height:1;
  padding:14px 26px;border:1px solid transparent;border-radius:var(--radius);
  cursor:pointer;transition:background .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary:hover{background:var(--lime-deep);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-primary.nav-cta{padding:12px 22px;font-size:14.5px;}

.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--ink);
  font-size:15px;font-weight:700;line-height:1;
  padding:14px 26px;border:1px solid rgba(15,17,16,.26);border-radius:var(--radius);
  cursor:pointer;transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);transform:translateY(-1px);}

.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--radius);
  background:transparent;border:1px solid var(--line);color:var(--ink);
  cursor:pointer;transition:border-color .18s ease,background .18s ease;
}
.nav-toggle:hover{border-color:var(--ink);}
.nav-toggle i{font-size:17px;}

/* 移动抽屉 */
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:min(84vw,330px);
  background:var(--ink);color:var(--paper);
  padding:26px 22px 40px;z-index:1200;overflow-y:auto;
  transform:translateX(-100%);transition:transform .28s ease;
}
.drawer.open{transform:translateX(0);}
.drawer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;margin-bottom:26px;}
.drawer-brand .brand-mark{background:var(--lime);}
.drawer-brand .brand-mark span{background:var(--ink);}
.drawer h3{font-size:12px;font-weight:700;letter-spacing:.16em;color:#7E817B;margin:22px 0 10px;}
.drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;font-size:15.5px;color:#D9DAD4;
  border-bottom:1px solid var(--line-dark);transition:color .18s ease,padding-left .18s ease;
}
.drawer a.drawer-link:hover{color:var(--lime);padding-left:6px;}
.drawer .btn-primary{width:100%;margin-top:26px;}
.drawer-backdrop{
  position:fixed;inset:0;background:rgba(15,17,16,.52);
  opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:1100;
}
.drawer-backdrop.open{opacity:1;pointer-events:auto;}

@media (max-width:991px){
  .nav-wrap{display:flex;align-items:center;justify-content:space-between;min-height:66px;}
  .nav-side.left{display:none;}
  .nav-side.right .nav-link-x{display:none;}
  .nav-side.right{order:3;gap:10px;}
  .brand{order:2;font-size:17px;}
  .brand-mark{width:22px;height:22px;}
  .brand-mark span{width:9px;height:9px;}
  .nav-toggle{display:inline-flex;order:1;}
  .btn-primary.nav-cta{padding:11px 16px;font-size:13.5px;}
}
@media (max-width:420px){
  .btn-primary.nav-cta span{display:none;}
  .btn-primary.nav-cta{padding:11px 13px;}
}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:26px 0 0;}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:9px;
  font-size:13px;color:var(--gray);line-height:1.6;
}
.crumbs a{color:var(--gray);transition:color .18s ease;}
.crumbs a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:4px;}
.crumbs .sep{color:var(--mist);}
.crumbs .current{color:var(--ink);font-weight:600;}

/* ---------- 文章头部 ---------- */
.article-head{position:relative;overflow:hidden;margin-top:20px;border-radius:10px;background:var(--ink);}
.article-head::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.3;
}
.article-head::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(15,17,16,.95) 0%,rgba(15,17,16,.78) 58%,rgba(15,17,16,.52) 100%);
}
.article-head .head-inner{position:relative;z-index:2;padding:64px 0 60px;max-width:900px;}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--lime);color:var(--ink);
  font-size:12px;font-weight:700;letter-spacing:.06em;
  padding:6px 14px;border-radius:999px;
}
.article-head h1{
  color:var(--paper);font-size:clamp(30px,4.3vw,50px);
  font-weight:800;line-height:1.22;letter-spacing:-.02em;
  margin:20px 0 22px;max-width:22ch;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:14px;color:rgba(245,244,239,.7);}
.meta-row .meta{display:inline-flex;align-items:center;gap:7px;}
.meta-row .meta i{font-size:13px;color:var(--lime);}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:rgba(245,244,239,.35);}
@media (max-width:767px){
  .article-head .head-inner{padding:40px 0 38px;}
  .article-head h1{max-width:none;}
}

/* ---------- 正文布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 280px;
  gap:64px;align-items:start;
  max-width:1140px;margin:0 auto;padding:56px 0 0;
}
.article-body{
  max-width:780px;font-size:17px;line-height:1.9;color:var(--dark-gray);
  min-width:0;
}
.article-body p{margin:0 0 1.15em;}
.article-body h2{
  font-size:29px;font-weight:700;line-height:1.32;color:var(--ink);
  margin:2.2em 0 .75em;padding-left:16px;border-left:4px solid var(--lime);
  scroll-margin-top:110px;
}
.article-body h3{
  font-size:22px;font-weight:600;line-height:1.45;color:var(--ink);
  margin:1.8em 0 .6em;scroll-margin-top:110px;
}
.article-body h2:first-child,.article-body h3:first-child{margin-top:0;}
.article-body ul,.article-body ol{padding-left:1.45em;margin:0 0 1.15em;}
.article-body ul li{list-style:disc;}
.article-body ol li{list-style:decimal;}
.article-body li{margin:.45em 0;}
.article-body blockquote{
  margin:1.7em 0;padding:18px 24px;background:#EDECE5;
  border-left:4px solid var(--lime);border-radius:0 var(--radius) var(--radius) 0;
  color:var(--dark-gray);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--radius);margin:1.7em 0;width:100%;}
.article-body figure{margin:1.7em 0;}
.article-body figcaption{font-size:13px;color:var(--gray);text-align:center;margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:1.6em 0;display:block;overflow-x:auto;}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;}
.article-body th{background:var(--ink);color:var(--paper);font-weight:600;}
.article-body tr:nth-child(even) td{background:#EFEEE8;}
.article-body a{
  color:var(--ink);text-decoration:underline;text-underline-offset:4px;
  text-decoration-color:var(--gray);transition:text-decoration-color .18s ease;
}
.article-body a:hover{text-decoration-color:var(--lime);}
.article-body strong{color:var(--ink);font-weight:700;}

.empty-state{
  border:1px solid var(--line);background:#EFEEE8;border-radius:var(--radius);
  padding:52px 28px;text-align:center;color:var(--gray);
}
.empty-state i{font-size:28px;color:var(--gray);margin-bottom:14px;display:block;}
.empty-state p{font-size:16.5px;color:var(--ink);font-weight:600;margin-bottom:20px;}
.empty-state .btn-ghost{padding:11px 22px;font-size:14.5px;}

/* ---------- 目录 ---------- */
.toc-col{min-width:0;}
.toc-card{
  position:sticky;top:104px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 18px 22px;box-shadow:var(--shadow-s);
}
.toc-title{
  font-size:12.5px;font-weight:700;letter-spacing:.14em;
  color:var(--gray);margin:0 0 12px;
}
.toc-list{display:flex;flex-direction:column;gap:1px;}
.toc-list a{
  display:block;font-size:14px;line-height:1.5;color:var(--gray);
  padding:7px 10px;border-left:2px solid transparent;border-radius:0 4px 4px 0;
  transition:color .18s ease,background .18s ease,border-color .18s ease;
}
.toc-list a:hover{color:var(--ink);background:#F0EFE8;}
.toc-list a.is-active{color:var(--ink);font-weight:600;border-left-color:var(--lime);background:#F0EFE8;}
.toc-list li.lvl-3 a{padding-left:24px;font-size:13.5px;}

@media (max-width:991px){
  .article-layout{grid-template-columns:1fr;gap:26px;padding:36px 0 0;max-width:none;}
  .toc-col{order:-1;}
  .toc-card{position:static;box-shadow:none;}
  .toc-list{max-height:230px;overflow-y:auto;}
}

/* ---------- 相关推荐 ---------- */
.rel-sec{margin-top:80px;padding-top:56px;border-top:1px solid var(--line);}
.sec-head{margin-bottom:30px;}
.sec-eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.16em;
  color:var(--gray);margin-bottom:10px;
}
.sec-head h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.01em;}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rel-card{
  display:flex;flex-direction:column;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);border-color:var(--lime);}
.rel-card .thumb{width:100%;aspect-ratio:16/10;object-fit:cover;background:#E9E8E2;}
.rel-card .rel-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:9px;flex:1;}
.rel-tag{
  align-self:flex-start;font-size:12px;font-weight:600;color:var(--dark-gray);
  border:1px solid var(--line);border-radius:999px;padding:3px 10px;background:#F7F6F1;
}
.rel-card h3{font-size:17.5px;font-weight:700;line-height:1.5;color:var(--ink);}
.rel-card .rel-time{font-size:13px;color:var(--gray);margin-top:auto;}
.rel-foot{margin-top:34px;}
.back-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:700;color:var(--ink);
  padding:12px 22px;border:1px solid rgba(15,17,16,.22);border-radius:var(--radius);
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.back-link i{transition:transform .2s ease;}
.back-link:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.back-link:hover i{transform:translateX(4px);}

@media (max-width:991px){.rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:640px){.rel-grid{grid-template-columns:1fr;}}

/* ---------- CTA ---------- */
.cta-wrap{margin:88px 0 0;}
.cta-band{
  background:var(--ink);color:var(--paper);border-radius:12px;
  padding:50px 52px;display:flex;flex-wrap:wrap;align-items:center;
  justify-content:space-between;gap:32px;
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.32;margin-bottom:10px;}
.cta-band p{color:#A7AAA3;font-size:15.5px;max-width:56ch;line-height:1.8;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-band .btn-ghost{color:var(--paper);border-color:rgba(245,244,239,.3);}
.cta-band .btn-ghost:hover{background:var(--paper);color:var(--ink);border-color:var(--paper);}
@media (max-width:767px){
  .cta-wrap{margin-top:64px;}
  .cta-band{padding:34px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-primary,.cta-actions .btn-ghost{flex:1 1 100%;}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#C9CAC4;padding:72px 0 28px;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .brand{color:var(--paper);font-size:18.5px;font-weight:800;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--lime);}
.footer-brand .brand-mark span{background:var(--ink);}
.footer-brand p{font-size:14.5px;line-height:1.85;color:#9EA19B;max-width:38ch;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--paper);margin-bottom:16px;letter-spacing:.05em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col span{font-size:14px;color:#9EA19B;line-height:1.6;transition:color .18s ease;}
.footer-col a:hover{color:var(--lime);}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#7E817B;
}
@media (max-width:991px){
  .site-footer{padding:56px 0 24px;margin-top:72px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;margin-top:40px;}
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease;}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  .reveal{opacity:1;transform:none;}
  .rel-card:hover{transform:none;}
  .btn-primary:hover,.btn-ghost:hover{transform:none;}
}

/* roulang page: category3 */
:root{
  --ink:#0F1110;
  --bg:#F5F4EF;
  --lime:#D8FF4A;
  --lime-deep:#C8EF3A;
  --coral:#FF5A36;
  --fog:#E4E3DD;
  --mid:#6B6F6A;
  --deep:#2A2D2B;
  --paper:#FFFFFF;
  --soft:#EFEEE8;
  --radius:6px;
  --radius-lg:10px;
  --line:1px solid rgba(15,17,16,.10);
  --line-dark:1px solid rgba(245,244,239,.14);
  --shadow-sm:0 1px 2px rgba(15,17,16,.06);
  --shadow-md:0 10px 30px rgba(15,17,16,.10);
  --ease:180ms ease;
  --font:"HarmonyOS Sans SC","MiSans","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  background:var(--bg);
  color:var(--ink);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius)}
a{color:var(--ink);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--ink)}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-0.01em;line-height:1.2}
p{margin:0 0 1.05em}
ul{margin:0;padding:0;list-style:none}
button,input,select{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.container-x{
  width:100%;
  max-width:1320px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:104px 0}
.section-sm{padding:72px 0}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--mid);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:16px;height:2px;background:var(--lime);display:inline-block;
}
.eyebrow-light{color:rgba(245,244,239,.66)}
.eyebrow-light::before{background:var(--lime)}
.sec-title{font-size:clamp(24px,2.4vw,34px);font-weight:800;margin-bottom:14px}
.sec-desc{color:var(--mid);max-width:640px;margin-bottom:0}
.tag-x{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:999px;
  font-size:12.5px;font-weight:600;
  border:var(--line);color:var(--mid);background:transparent;
  transition:all var(--ease);
}
.tag-x.active,.tag-x:hover{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.badge-x{
  display:inline-block;padding:3px 10px;border-radius:999px;
  font-size:12px;font-weight:600;border:var(--line);color:var(--mid);background:var(--soft);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--radius);
  font-size:15.5px;font-weight:700;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.btn-primary:hover{background:var(--lime-deep);color:var(--ink);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:transparent;color:var(--ink);border-color:rgba(15,17,16,.28)}
.btn-outline:hover{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.btn-light{background:var(--bg);color:var(--ink);border-color:var(--bg)}
.btn-light:hover{background:var(--lime);border-color:var(--lime);color:var(--ink);transform:translateY(-1px)}
.btn-ghost-light{background:transparent;color:var(--bg);border-color:rgba(245,244,239,.38)}
.btn-ghost-light:hover{background:rgba(245,244,239,.10);color:var(--bg)}
.btn-full{width:100%}
.btn-mini{padding:8px 16px;font-size:13.5px;border-radius:var(--radius)}
.btn[disabled]{opacity:.4;cursor:not-allowed}

/* header */
.site-header{
  position:sticky;top:0;z-index:900;
  background:rgba(245,244,239,.94);
  border-bottom:1px solid transparent;
  transition:border-color var(--ease),background var(--ease),box-shadow var(--ease);
}
.site-header.scrolled{
  border-bottom:1px solid var(--fog);
  box-shadow:0 1px 2px rgba(15,17,16,.04);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  min-height:76px;
  gap:20px;
}
.nav-side{display:flex;align-items:center;gap:28px}
.nav-side.left{justify-content:flex-start}
.nav-side.right{justify-content:flex-end}
.nav-link-x{
  position:relative;
  font-size:15px;font-weight:500;color:var(--ink);
  padding:6px 0;
}
.nav-link-x::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;
  height:2px;background:var(--lime);transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease);
}
.nav-link-x:hover::after{transform:scaleX(1)}
.nav-link-x.active{font-weight:800}
.nav-link-x.active::after{transform:scaleX(1)}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:18px;font-weight:800;letter-spacing:-0.01em;color:var(--ink);
  white-space:nowrap;
}
.brand-mark{
  width:26px;height:26px;border-radius:6px;background:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 26px;
}
.brand-mark span{
  width:9px;height:9px;background:var(--lime);display:block;border-radius:1px;
  box-shadow:0 0 0 2px rgba(216,255,74,.25);
}
.nav-cta{padding:10px 20px;font-size:14.5px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--radius);
  border:var(--line);background:var(--paper);align-items:center;justify-content:center;
  font-size:16px;color:var(--ink);cursor:pointer;
}
.drawer{
  position:fixed;inset:0 auto 0 0;width:302px;max-width:86vw;
  background:var(--bg);z-index:1100;transform:translateX(-102%);
  transition:transform 260ms ease;display:flex;flex-direction:column;
  border-right:var(--line);overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 20px;border-bottom:var(--line);
}
.drawer-head .brand{font-size:16px}
.drawer-close{
  width:38px;height:38px;border-radius:var(--radius);border:var(--line);
  background:transparent;cursor:pointer;color:var(--ink);
}
.drawer-nav{padding:8px 0}
.drawer-nav a{
  display:flex;align-items:center;height:52px;padding:0 22px;
  font-size:15.5px;font-weight:500;border-bottom:1px solid var(--fog);
}
.drawer-nav a.active{font-weight:800;box-shadow:inset 3px 0 0 var(--lime)}
.drawer-foot{padding:22px;margin-top:auto}
.drawer-foot p{font-size:13px;color:var(--mid);margin:12px 0 0}
.scrim{
  position:fixed;inset:0;background:rgba(15,17,16,.44);z-index:1050;
  opacity:0;visibility:hidden;transition:opacity 240ms ease,visibility 240ms ease;
}
.scrim.open{opacity:1;visibility:visible}

/* hero */
.hero-device{
  position:relative;
  background:var(--ink);
  color:var(--bg);
  overflow:hidden;
  padding:88px 0 92px;
}
.hero-device .hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.20;
}
.hero-device .hero-grid-lines{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(245,244,239,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(245,244,239,.055) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:56px;align-items:center;
}
.hero-crumb{
  font-size:13.5px;color:rgba(245,244,239,.6);margin-bottom:20px;
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
}
.hero-crumb a{color:rgba(245,244,239,.72)}
.hero-crumb a:hover{color:var(--lime)}
.hero-crumb i{font-size:10px;opacity:.6}
.hero-crumb .current{color:var(--bg)}
.hero-device h1{
  font-size:clamp(30px,4vw,54px);
  line-height:1.16;font-weight:800;letter-spacing:-0.02em;
  margin-bottom:20px;
}
.hero-device h1 em{
  font-style:normal;color:var(--lime);
}
.hero-sub{
  font-size:17px;line-height:1.9;color:rgba(245,244,239,.76);
  max-width:600px;margin-bottom:30px;
}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px}
.chip-dark{
  padding:6px 14px;border-radius:999px;font-size:12.5px;font-weight:600;
  border:var(--line-dark);color:rgba(245,244,239,.8);
}
.hero-figure{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:var(--line-dark);
  background:#1A1C1B;
}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0;
}
.hero-figure .fig-cap{
  position:absolute;left:0;right:0;bottom:0;
  padding:16px 18px;background:linear-gradient(to top,rgba(15,17,16,.88),rgba(15,17,16,0));
  font-size:13.5px;color:rgba(245,244,239,.9);font-weight:600;
}
.hero-stat-row{
  position:relative;z-index:2;
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;margin-top:64px;
  border:var(--line-dark);border-radius:var(--radius);overflow:hidden;
  background:rgba(245,244,239,.10);
}
.hero-stat{
  background:var(--ink);padding:22px 20px;
}
.hero-stat .num{
  font-size:30px;font-weight:800;color:var(--lime);
  font-variant-numeric:tabular-nums;line-height:1.1;
}
.hero-stat .lab{font-size:13px;color:rgba(245,244,239,.64);margin-top:6px}

/* platform cards */
.plat-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:22px;
}
.plat-card{
  background:var(--paper);border:var(--line);border-radius:var(--radius-lg);
  padding:28px 26px;transition:transform 220ms ease,box-shadow 220ms ease,border-color 220ms ease;
}
.plat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--lime)}
.plat-ico{
  width:46px;height:46px;border-radius:var(--radius);
  background:var(--ink);color:var(--lime);
  display:flex;align-items:center;justify-content:center;font-size:19px;
  margin-bottom:18px;
}
.plat-card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.plat-card p{font-size:15px;color:var(--mid);line-height:1.8;margin-bottom:14px}
.plat-list{display:flex;flex-direction:column;gap:8px}
.plat-list li{
  font-size:14px;color:var(--ink);display:flex;gap:9px;align-items:flex-start;line-height:1.7;
}
.plat-list li i{color:var(--lime);font-size:11px;margin-top:8px;flex:0 0 auto}

/* table */
.table-wrap{
  border:var(--line);border-radius:var(--radius-lg);overflow:hidden;background:var(--paper);
}
.table-x{width:100%;border-collapse:collapse;margin:0}
.table-x thead th{
  background:var(--ink);color:var(--bg);
  font-size:13.5px;font-weight:700;letter-spacing:.03em;
  padding:16px 18px;text-align:left;border:none;white-space:nowrap;
}
.table-x tbody td{
  padding:16px 18px;font-size:14.5px;color:var(--ink);
  border-bottom:1px solid var(--fog);vertical-align:middle;
}
.table-x tbody tr:nth-child(even){background:var(--soft)}
.table-x tbody tr:last-child td{border-bottom:none}
.table-x tbody tr:hover{background:#E9F5C9}
.td-plat{font-weight:700;display:flex;align-items:center;gap:10px}
.td-plat i{color:var(--mid)}
.td-muted{color:var(--mid)}

/* checklist */
.check-layout{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;
}
.check-board{
  background:var(--paper);border:var(--line);border-radius:var(--radius-lg);
  padding:30px 28px;
}
.check-board h3{font-size:20px;margin-bottom:18px}
.check-item{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 0;border-bottom:1px solid var(--fog);
}
.check-item:last-child{border-bottom:none}
.check-item i{
  width:22px;height:22px;border-radius:4px;background:var(--lime);
  color:var(--ink);font-size:11px;display:flex;align-items:center;justify-content:center;
  margin-top:5px;flex:0 0 22px;
}
.check-item b{display:block;font-size:15px;font-weight:700;margin-bottom:2px}
.check-item span{font-size:14px;color:var(--mid);line-height:1.75}
.figure-note{
  margin-top:18px;background:var(--soft);border:var(--line);border-radius:var(--radius);
  padding:20px 22px;font-size:14.5px;color:var(--mid);line-height:1.85;
}
.figure-note strong{color:var(--ink)}

/* deviation */
.dev-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.dev-card{
  display:flex;gap:20px;background:var(--paper);border:var(--line);
  border-radius:var(--radius-lg);padding:26px 26px;
  transition:border-color 220ms ease,transform 220ms ease;
}
.dev-card:hover{border-color:var(--lime);transform:translateY(-3px)}
.dev-num{
  font-size:26px;font-weight:800;color:var(--fog);line-height:1;
  font-variant-numeric:tabular-nums;flex:0 0 auto;
}
.dev-card h3{font-size:17.5px;margin-bottom:8px}
.dev-card p{font-size:14.5px;color:var(--mid);margin-bottom:0;line-height:1.8}

/* notice */
.notice-band{
  background:var(--soft);border-left:3px solid var(--coral);
  border-radius:var(--radius);padding:22px 26px;
  display:flex;gap:16px;align-items:flex-start;
}
.notice-band i{color:var(--coral);font-size:18px;margin-top:5px}
.notice-band b{display:block;font-size:15.5px;margin-bottom:4px}
.notice-band p{margin:0;font-size:14.5px;color:var(--mid);line-height:1.8}

/* faq */
.faq-x .accordion-item{
  background:transparent;border:none;border-bottom:1px solid var(--fog);
}
.faq-x .accordion-button{
  background:transparent;box-shadow:none;border:none;
  padding:24px 48px 24px 0;font-size:17.5px;font-weight:700;color:var(--ink);
  line-height:1.5;position:relative;
}
.faq-x .accordion-button:not(.collapsed){color:var(--ink)}
.faq-x .accordion-button:focus{box-shadow:none;outline:2px solid var(--lime);outline-offset:2px}
.faq-x .accordion-button::after{
  display:none;
}
.faq-x .faq-num{
  display:inline-block;width:44px;font-size:14px;font-weight:800;color:var(--mid);
  font-variant-numeric:tabular-nums;
}
.faq-x .acc-ico{
  position:absolute;right:6px;top:50%;transform:translateY(-50%);
  width:30px;height:30px;border-radius:999px;border:var(--line);
  display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--ink);
  transition:transform 220ms ease,background 220ms ease;
}
.faq-x .accordion-button:not(.collapsed) .acc-ico{transform:translateY(-50%) rotate(180deg);background:var(--lime);border-color:var(--lime)}
.faq-x .accordion-body{
  padding:0 48px 26px 44px;font-size:15.5px;color:var(--mid);
  line-height:1.9;max-width:820px;
}
.faq-layout{display:grid;grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);gap:56px;align-items:start}

/* CTA */
.cta-band{background:var(--ink);color:var(--bg);position:relative;overflow:hidden}
.cta-band .cta-deco{
  position:absolute;inset:0;
  background-image:radial-gradient(circle at 88% 12%,rgba(216,255,74,.14),transparent 46%);
  pointer-events:none;
}
.cta-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.85fr);
  gap:56px;align-items:center;
}
.cta-inner h2{font-size:clamp(26px,2.8vw,38px);margin-bottom:16px;line-height:1.24}
.cta-inner .lead{color:rgba(245,244,239,.74);font-size:16px;max-width:520px}
.trust-list{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.trust-list li{
  display:flex;gap:11px;align-items:flex-start;font-size:14.5px;color:rgba(245,244,239,.82);
}
.trust-list li i{color:var(--lime);font-size:12px;margin-top:7px}
.cta-form{
  background:var(--bg);color:var(--ink);
  border-radius:var(--radius-lg);padding:30px 28px;
}
.cta-form h3{font-size:19px;margin-bottom:6px}
.cta-form .form-hint{font-size:13.5px;color:var(--mid);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{
  display:block;font-size:13.5px;font-weight:700;margin-bottom:7px;color:var(--ink);
}
.field input,.field select{
  width:100%;height:48px;padding:0 14px;border-radius:var(--radius);
  border:1px solid rgba(15,17,16,.18);background:var(--paper);color:var(--ink);
  font-size:15px;transition:border-color var(--ease),box-shadow var(--ease);
}
.field input::placeholder{color:#9B9E99}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--lime);box-shadow:0 0 0 2px var(--lime);
}
.check-x{
  display:flex;gap:10px;align-items:flex-start;
  font-size:13.5px;color:var(--mid);line-height:1.7;margin:8px 0 20px;cursor:pointer;
}
.check-x input{
  appearance:none;-webkit-appearance:none;width:18px;height:18px;flex:0 0 18px;
  border:1px solid rgba(15,17,16,.3);border-radius:4px;background:var(--paper);
  margin-top:3px;cursor:pointer;position:relative;transition:all var(--ease);
}
.check-x input:checked{background:var(--lime);border-color:var(--lime)}
.check-x input:checked::after{
  content:"";position:absolute;left:5px;top:1px;width:6px;height:11px;
  border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);transform:rotate(42deg);
}
.form-note{font-size:12.5px;color:var(--mid);margin:14px 0 0;line-height:1.7}

/* footer */
.site-footer{
  background:var(--ink);color:var(--bg);padding:76px 0 26px;
  border-top:1px solid rgba(245,244,239,.08);
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px;
  padding-bottom:48px;border-bottom:1px solid rgba(245,244,239,.12);
}
.footer-brand .brand{color:var(--bg);margin-bottom:16px}
.footer-brand .brand-mark{background:var(--bg)}
.footer-brand .brand-mark span{background:var(--ink)}
.footer-brand p{font-size:14px;color:rgba(245,244,239,.62);line-height:1.85;max-width:340px;margin:0}
.footer-col h4{font-size:14.5px;font-weight:700;margin-bottom:18px;color:var(--bg)}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a,.footer-col span{font-size:14px;color:rgba(245,244,239,.62);line-height:1.6}
.footer-col a:hover{color:var(--lime)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding-top:24px;font-size:13px;color:rgba(245,244,239,.45);
}

/* reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 560ms ease,transform 560ms ease}
.reveal.in{opacity:1;transform:none}

@media (max-width:1199px){
  .section{padding:88px 0}
  .hero-inner{gap:40px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px}
  .footer-col:last-child{grid-column:1/-1}
}
@media (max-width:991px){
  .nav-side{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{grid-template-columns:auto 1fr auto;min-height:66px}
  .header-inner .brand{justify-self:center}
  .nav-cta{display:none}
  .hero-inner{grid-template-columns:1fr;gap:38px}
  .hero-device{padding:64px 0 70px}
  .hero-stat-row{grid-template-columns:repeat(2,1fr);margin-top:44px}
  .plat-grid{grid-template-columns:repeat(2,1fr);gap:18px}
  .check-layout{grid-template-columns:1fr;gap:32px}
  .faq-layout{grid-template-columns:1fr;gap:34px}
  .cta-inner{grid-template-columns:1fr;gap:34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .footer-brand{grid-column:1/-1}
  .footer-col:last-child{grid-column:1/-1}
}
@media (max-width:767px){
  .container-x{padding:0 20px}
  .section{padding:64px 0}
  .section-sm{padding:52px 0}
  body{font-size:16px}
  .hero-device h1{font-size:32px}
  .hero-btns .btn{width:100%}
  .plat-grid{grid-template-columns:1fr;gap:16px}
  .dev-grid{grid-template-columns:1fr;gap:16px}
  .table-wrap{border:none;background:transparent}
  .table-x,.table-x tbody,.table-x tr,.table-x td{display:block;width:100%}
  .table-x thead{display:none}
  .table-x tbody tr{
    background:var(--paper);border:var(--line);border-radius:var(--radius-lg);
    padding:14px 16px;margin-bottom:14px;
  }
  .table-x tbody tr:nth-child(even){background:var(--paper)}
  .table-x tbody tr:hover{background:var(--paper)}
  .table-x tbody td{
    border:none;padding:9px 0;display:flex;justify-content:space-between;
    gap:16px;font-size:14.5px;border-bottom:1px dashed var(--fog);
  }
  .table-x tbody td:last-child{border-bottom:none;padding-bottom:0}
  .table-x tbody td::before{
    content:attr(data-label);font-weight:700;color:var(--mid);flex:0 0 38%;
    font-size:13px;
  }
  .faq-x .accordion-button{font-size:16px;padding:20px 42px 20px 0}
  .faq-x .accordion-body{padding:0 24px 22px 0;font-size:15px}
  .faq-x .faq-num{width:34px;font-size:13px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .hero-stat-row{grid-template-columns:1fr 1fr}
  .hero-stat .num{font-size:24px}
  .plat-card,.cta-form,.check-board{padding:22px 20px}
  .footer-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  .reveal{transform:none;transition:opacity 300ms ease}
  .btn:hover,.plat-card:hover,.dev-card:hover{transform:none}
  .drawer{transition:none}
}

/* roulang page: category2 */
:root{
  --ink:#0F1110;
  --paper:#F5F4EF;
  --lime:#D8FF4A;
  --coral:#FF5A36;
  --mist:#E4E3DD;
  --gray:#6B6F6A;
  --darkgray:#2A2D2B;
  --line:rgba(15,17,16,.10);
  --line-dark:rgba(245,244,239,.14);
  --radius:6px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(15,17,16,.06);
  --shadow-2:0 10px 30px rgba(15,17,16,.10);
  --font:"HarmonyOS Sans SC","MiSans","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,"SFMono-Regular","JetBrains Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
a:hover{color:inherit}
button,input,select,textarea{font-family:inherit;font-size:inherit}
*:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:2px}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em}
p{margin:0}
.container-x{width:100%;max-width:1320px;margin:0 auto;padding:0 24px}
.section{padding:104px 0}
.section-tight{padding:72px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--gray);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--lime);display:inline-block}
.h2-x{font-size:clamp(26px,3vw,36px);line-height:1.25;font-weight:800}
.h3-x{font-size:22px;line-height:1.45;font-weight:700}
.lead-x{color:var(--gray);font-size:16px;line-height:1.9;max-width:64ch}
.section-head{display:flex;flex-wrap:wrap;gap:24px;align-items:flex-end;justify-content:space-between;margin-bottom:44px}
.section-head .left{max-width:660px}

/* buttons */
.btn-x{
  --btn-bg:var(--lime);--btn-fg:var(--ink);--btn-bd:var(--lime);
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 28px;border-radius:var(--radius);
  background:var(--btn-bg);color:var(--btn-fg);
  border:1px solid var(--btn-bd);
  font-size:15px;font-weight:700;line-height:1.2;
  cursor:pointer;transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn-x:hover{transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-x:active{transform:translateY(0)}
.btn-x-primary{--btn-bg:var(--lime);--btn-fg:var(--ink);--btn-bd:var(--lime)}
.btn-x-primary:hover{--btn-bg:#cbf03c;--btn-bd:#cbf03c}
.btn-x-ghost{--btn-bg:transparent;--btn-fg:var(--ink);--btn-bd:rgba(15,17,16,.28)}
.btn-x-ghost:hover{--btn-bg:var(--ink);--btn-fg:var(--paper);--btn-bd:var(--ink)}
.btn-x-light{--btn-bg:var(--paper);--btn-fg:var(--ink);--btn-bd:var(--paper)}
.btn-x-light:hover{--btn-bg:#fff;--btn-bd:#fff}
.btn-x-outline-light{--btn-bg:transparent;--btn-fg:var(--paper);--btn-bd:rgba(245,244,239,.36)}
.btn-x-outline-light:hover{--btn-bg:rgba(245,244,239,.10);--btn-fg:var(--paper);--btn-bd:var(--paper)}
.btn-x-sm{padding:10px 18px;font-size:14px}
.btn-block-x{width:100%}

/* tags */
.tag-x{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:transparent;
  font-size:12.5px;font-weight:600;color:var(--gray);letter-spacing:.02em;
}
.tag-x-lime{background:var(--lime);border-color:var(--lime);color:var(--ink)}
.tag-x-ink{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.tag-x-alert{background:rgba(255,90,54,.10);border-color:rgba(255,90,54,.42);color:#C23A19}

/* header */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(245,244,239,.94);
  border-bottom:1px solid transparent;
  transition:box-shadow .22s ease,border-color .22s ease,background .22s ease;
}
.site-header.is-stuck{border-bottom-color:var(--line);box-shadow:var(--shadow-1);background:var(--paper)}
.nav-wrap{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  gap:20px;min-height:78px;
}
.nav-side{display:flex;align-items:center;gap:30px}
.nav-side.left{justify-content:flex-start}
.nav-side.right{justify-content:flex-end}
.nav-link-x{
  position:relative;font-size:15px;font-weight:500;color:var(--ink);
  padding:6px 0;white-space:nowrap;transition:color .18s ease;
}
.nav-link-x::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--lime);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link-x:hover::after{transform:scaleX(1)}
.nav-link-x.active{font-weight:800}
.nav-link-x.active::after{transform:scaleX(1)}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:19px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;
}
.brand-mark{
  width:26px;height:26px;border-radius:5px;background:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-mark span{width:9px;height:9px;background:var(--lime);border-radius:2px;display:block}
.mobile-bar{display:none;align-items:center;justify-content:space-between;gap:12px;min-height:66px}
.menu-toggle{
  width:42px;height:42px;border:1px solid var(--line);background:transparent;border-radius:var(--radius);
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
}
.menu-toggle span{display:block;width:17px;height:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.drawer{
  position:fixed;inset:0 auto 0 0;width:min(84vw,340px);background:var(--paper);
  border-right:1px solid var(--line);z-index:1060;transform:translateX(-102%);
  transition:transform .26s ease;padding:26px 22px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,17,16,.5);z-index:1050;
  opacity:0;visibility:hidden;transition:opacity .26s ease,visibility .26s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer .brand{margin-bottom:22px}
.drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;border-bottom:1px solid var(--line);font-size:15.5px;font-weight:500;
}
.drawer a.drawer-link.active{font-weight:800}
.drawer a.drawer-link.active::before{content:"";width:3px;height:16px;background:var(--lime);margin-right:10px;border-radius:2px}
.drawer .drawer-cta{margin-top:24px}
.drawer .drawer-note{margin-top:22px;font-size:13px;color:var(--gray);line-height:1.8}

/* hero */
.hero-cat{position:relative;background:var(--ink);color:var(--paper);overflow:hidden}
.hero-bg-img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  opacity:.34;filter:grayscale(.25);
}
.hero-cat::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(15,17,16,.86) 0%,rgba(15,17,16,.9) 60%,rgba(15,17,16,.96) 100%),
    repeating-linear-gradient(0deg,rgba(216,255,74,.05) 0 1px,transparent 1px 46px);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;padding:96px 24px 104px;max-width:1320px;margin:0 auto}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:rgba(245,244,239,.62);margin-bottom:26px}
.crumb a{color:rgba(245,244,239,.78)}
.crumb a:hover{color:var(--lime)}
.crumb .sep{opacity:.45}
.crumb .now{color:var(--paper);font-weight:600}
.hero-cat .eyebrow{color:rgba(245,244,239,.7)}
.hero-cat h1{
  font-size:clamp(32px,4.6vw,56px);line-height:1.14;font-weight:800;
  margin:14px 0 22px;max-width:19ch;letter-spacing:-.015em;
}
.hero-sub{color:rgba(245,244,239,.8);font-size:17px;line-height:1.9;max-width:62ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.hero-note{
  margin-top:26px;font-size:13.5px;color:rgba(245,244,239,.62);
  display:flex;align-items:center;gap:9px;
}
.hero-note i{color:var(--lime)}

/* stat strip */
.stat-strip{border-bottom:1px solid var(--line);background:var(--paper)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat-item{padding:34px 26px;border-left:1px solid var(--line)}
.stat-item:first-child{border-left:none;padding-left:0}
.stat-num{font-family:var(--mono);font-size:34px;font-weight:800;line-height:1.1;font-variant-numeric:tabular-nums;color:var(--ink)}
.stat-num em{font-style:normal;font-size:15px;font-weight:700;color:var(--gray);margin-left:6px}
.stat-label{margin-top:8px;font-size:14px;color:var(--gray);line-height:1.7}

/* compare */
.compare-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:start}
.check-list{margin-top:30px;display:grid;gap:2px}
.check-item{
  display:grid;grid-template-columns:auto 1fr;gap:14px;
  padding:20px 0;border-bottom:1px solid var(--line);
}
.check-item:last-child{border-bottom:none}
.check-icon{
  width:26px;height:26px;border-radius:50%;background:rgba(216,255,74,.28);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink);
  font-size:12px;flex:0 0 auto;margin-top:3px;
}
.check-item h3{font-size:17px;font-weight:700;line-height:1.6}
.check-item p{font-size:14.5px;color:var(--gray);line-height:1.8;margin-top:5px}
.device-frame{
  border:1px solid var(--line);border-radius:var(--radius);background:#fff;
  box-shadow:var(--shadow-1);overflow:hidden;
}
.device-top{
  display:flex;align-items:center;gap:8px;padding:12px 16px;
  border-bottom:1px solid var(--line);background:var(--paper);
}
.dot-x{width:9px;height:9px;border-radius:50%;background:var(--mist)}
.dot-x.on{background:var(--lime)}
.device-title{margin-left:8px;font-size:12.5px;color:var(--gray);font-family:var(--mono);letter-spacing:.02em}
.device-shot{position:relative;aspect-ratio:16/10;background:var(--mist);overflow:hidden}
.device-shot img{width:100%;height:100%;object-fit:cover}
.device-shot::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(0deg,rgba(15,17,16,.05) 0 1px,transparent 1px 8px);
}
.device-body{padding:22px 20px}
.device-body ul{display:grid;gap:12px}
.device-body li{
  display:grid;grid-template-columns:auto 1fr;gap:12px;
  font-size:14.5px;color:var(--darkgray);line-height:1.8;
}
.device-body li i{color:var(--ink);margin-top:5px;font-size:12px}

/* alert */
.alert-strip{
  margin-top:64px;border:1px solid rgba(255,90,54,.45);background:rgba(255,90,54,.07);
  border-radius:var(--radius);padding:26px 28px;
  display:grid;grid-template-columns:auto 1fr;gap:20px;align-items:start;
}
.alert-icon{
  width:44px;height:44px;border-radius:var(--radius);background:var(--coral);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:18px;flex:0 0 auto;
}
.alert-strip h3{font-size:18px;font-weight:800;margin-bottom:8px}
.alert-strip p{font-size:15px;color:#7A3520;line-height:1.85}

/* verify cards */
.verify-grid{display:grid;grid-template-columns:1.15fr 1fr;grid-auto-rows:auto;gap:22px}
.verify-card{
  border:1px solid var(--line);border-radius:var(--radius);background:#fff;
  padding:32px 30px;box-shadow:var(--shadow-1);
  transition:border-color .22s ease,transform .22s ease,box-shadow .22s ease;
  display:flex;flex-direction:column;
}
.verify-card:hover{border-color:var(--lime);transform:translateY(-4px);box-shadow:var(--shadow-2)}
.verify-card.lead{
  grid-row:span 2;background:var(--ink);color:var(--paper);border-color:var(--ink);
}
.verify-card.lead:hover{border-color:var(--lime)}
.vc-icon{
  width:48px;height:48px;border-radius:var(--radius);display:inline-flex;align-items:center;justify-content:center;
  background:rgba(216,255,74,.3);color:var(--ink);font-size:19px;margin-bottom:20px;
}
.verify-card.lead .vc-icon{background:var(--lime)}
.verify-card h3{font-size:22px;font-weight:800;margin-bottom:12px}
.verify-card p{font-size:15px;color:var(--gray);line-height:1.9}
.verify-card.lead p{color:rgba(245,244,239,.78)}
.vc-list{margin-top:20px;display:grid;gap:10px}
.vc-list li{
  display:grid;grid-template-columns:auto 1fr;gap:10px;font-size:14.5px;line-height:1.8;color:var(--darkgray);
}
.verify-card.lead .vc-list li{color:rgba(245,244,239,.82)}
.vc-list i{color:var(--lime);margin-top:6px;font-size:11px}
.verify-card:not(.lead) .vc-list i{color:var(--ink)}

/* scene grid */
.scene-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:20px;align-items:start}
.scene-item{position:relative;border-radius:var(--radius);overflow:hidden;background:var(--mist);border:1px solid var(--line)}
.scene-item.a{grid-column:span 5}
.scene-item.b{grid-column:span 4}
.scene-item.c{grid-column:span 3}
.scene-item img{width:100%;height:100%;object-fit:cover;transition:transform .32s ease}
.scene-item.a img{aspect-ratio:4/3}
.scene-item.b img{aspect-ratio:1/1}
.scene-item.c img{aspect-ratio:3/4}
.scene-item:hover img{transform:scale(1.04)}
.scene-cap{
  position:absolute;left:0;right:0;bottom:0;padding:18px 18px 16px;
  background:linear-gradient(180deg,rgba(15,17,16,0) 0%,rgba(15,17,16,.82) 100%);
  color:var(--paper);
}
.scene-cap .tag-x{margin-bottom:10px}
.scene-cap h3{font-size:17px;font-weight:700;line-height:1.5}

/* faq */
.faq-x .accordion-item{
  background:transparent;border:none;border-bottom:1px solid var(--line);border-radius:0;
}
.faq-x .accordion-button{
  background:transparent;color:var(--ink);font-size:17px;font-weight:700;
  padding:22px 44px 22px 0;box-shadow:none;line-height:1.6;
  transition:color .18s ease;
}
.faq-x .accordion-button:not(.collapsed){color:var(--ink);background:transparent;box-shadow:none}
.faq-x .accordion-button:focus{box-shadow:none;outline:2px solid var(--lime);outline-offset:-2px}
.faq-x .accordion-button::after{
  background-image:none;content:"\2b";font-family:var(--font);
  width:auto;height:auto;font-size:20px;font-weight:700;color:var(--gray);
  position:absolute;right:8px;top:50%;transform:translateY(-50%);
  transition:transform .22s ease,color .22s ease;line-height:1;
}
.faq-x .accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(45deg);color:var(--ink)}
.faq-x .accordion-button::before{
  content:"";position:absolute;left:-16px;top:18px;bottom:18px;width:2px;background:var(--lime);
  opacity:0;transition:opacity .2s ease;
}
.faq-x .accordion-button:not(.collapsed)::before{opacity:1}
.faq-x .accordion-button{position:relative;padding-left:16px}
.faq-x .accordion-body{padding:0 16px 26px;font-size:15.5px;color:var(--gray);line-height:1.9;max-width:780px}
.faq-wrap{display:grid;grid-template-columns:340px 1fr;gap:56px;align-items:start}
.faq-aside{
  border:1px solid var(--line);border-radius:var(--radius);background:#fff;
  padding:28px 26px;box-shadow:var(--shadow-1);position:sticky;top:104px;
}
.faq-aside h3{font-size:18px;font-weight:800;margin-bottom:12px}
.faq-aside p{font-size:14.5px;color:var(--gray);line-height:1.85}
.faq-aside .aside-list{margin-top:20px;display:grid;gap:12px}
.faq-aside .aside-list li{display:grid;grid-template-columns:auto 1fr;gap:10px;font-size:14px;color:var(--darkgray);line-height:1.75}
.faq-aside .aside-list i{color:var(--ink);margin-top:6px;font-size:11px}

/* cta dark */
.cta-dark{background:var(--ink);color:var(--paper);padding:88px 0}
.cta-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.cta-dark h2{font-size:clamp(26px,3.2vw,38px);line-height:1.25;font-weight:800;margin-bottom:18px}
.cta-dark p.lead-x{color:rgba(245,244,239,.76)}
.cta-points{margin-top:26px;display:grid;gap:12px}
.cta-points li{display:grid;grid-template-columns:auto 1fr;gap:12px;font-size:15px;color:rgba(245,244,239,.86);line-height:1.8}
.cta-points i{color:var(--lime);margin-top:6px;font-size:12px}
.cta-panel{
  border:1px solid var(--line-dark);border-radius:var(--radius);
  background:rgba(245,244,239,.04);padding:32px 30px;
}
.cta-panel h3{font-size:19px;font-weight:800;margin-bottom:18px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.cta-panel .note{margin-top:20px;font-size:13px;color:rgba(245,244,239,.6);line-height:1.8}
.mini-rows{display:grid;gap:14px}
.mini-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:14px;border-bottom:1px solid var(--line-dark);font-size:14.5px}
.mini-row:last-child{border-bottom:none;padding-bottom:0}
.mini-row span:first-child{color:rgba(245,244,239,.62)}
.mini-row span:last-child{font-weight:700}

/* footer */
.site-footer{background:var(--ink);color:var(--paper);padding:76px 0 34px;border-top:1px solid var(--line-dark)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px}
.footer-brand .brand{color:var(--paper);margin-bottom:18px}
.footer-brand .brand-mark{background:var(--paper)}
.footer-brand .brand-mark span{background:var(--lime)}
.footer-brand p{font-size:14.5px;color:rgba(245,244,239,.68);line-height:1.9;max-width:38ch}
.footer-col h4{font-size:15px;font-weight:800;margin-bottom:18px;color:var(--paper)}
.footer-col ul{display:grid;gap:12px}
.footer-col li{font-size:14px;color:rgba(245,244,239,.68);line-height:1.75}
.footer-col a{color:rgba(245,244,239,.68);transition:color .18s ease}
.footer-col a:hover{color:var(--lime)}
.footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(245,244,239,.5);
}

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

/* responsive */
@media (max-width:1200px){
  .container-x{padding:0 22px}
  .compare-grid{gap:40px}
  .faq-wrap{grid-template-columns:300px 1fr;gap:40px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px}
  .footer-col:last-child{grid-column:span 3}
}
@media (max-width:991px){
  body{font-size:16.5px}
  .nav-wrap{display:none}
  .mobile-bar{display:flex}
  .section{padding:76px 0}
  .section-tight{padding:58px 0}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .stat-item{padding:26px 20px;border-left:none;border-top:1px solid var(--line)}
  .stat-item:nth-child(odd){padding-left:0}
  .stat-item:nth-child(-n+2){border-top:none}
  .compare-grid{grid-template-columns:1fr;gap:44px}
  .verify-grid{grid-template-columns:1fr}
  .verify-card.lead{grid-row:auto}
  .scene-item.a{grid-column:span 6}
  .scene-item.b{grid-column:span 6}
  .scene-item.c{grid-column:span 12}
  .scene-item.c img{aspect-ratio:16/9}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .cta-grid{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .footer-col:last-child{grid-column:span 2}
}
@media (max-width:767px){
  .container-x{padding:0 20px}
  .hero-inner{padding:64px 20px 72px}
  .hero-cat h1{max-width:100%}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn-x{width:100%}
  .section{padding:58px 0}
  .section-head{margin-bottom:30px}
  .stat-grid{grid-template-columns:1fr}
  .stat-item{padding:22px 0;border-top:1px solid var(--line)}
  .stat-item:nth-child(-n+2){border-top:1px solid var(--line)}
  .stat-item:first-child{border-top:none}
  .alert-strip{grid-template-columns:1fr;padding:22px}
  .scene-item.a,.scene-item.b,.scene-item.c{grid-column:span 12}
  .scene-item.a img{aspect-ratio:4/3}
  .scene-item.b img{aspect-ratio:4/3}
  .scene-item.c img{aspect-ratio:4/3}
  .cta-dark{padding:64px 0}
  .cta-actions{flex-direction:column}
  .cta-actions .btn-x{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-col:last-child{grid-column:span 1}
  .faq-x .accordion-button{font-size:16px;padding:18px 40px 18px 14px}
  .faq-x .accordion-button::before{left:-6px}
}
@media (max-width:479px){
  .brand{font-size:17px}
  .hero-cat h1{font-size:30px}
  .check-item{grid-template-columns:1fr;gap:8px}
  .verify-card{padding:26px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
  .scene-item:hover img,.verify-card:hover{transform:none}
}

/* roulang page: category4 */
:root{
  --ink:#0F1110;
  --paper:#F5F4EF;
  --lime:#D8FF4A;
  --lime-deep:#C8F035;
  --coral:#FF5A36;
  --mist:#E4E3DD;
  --gray:#6B6F6A;
  --deep:#2A2D2B;
  --line:rgba(15,17,16,.10);
  --line-dark:rgba(245,244,239,.16);
  --r:6px;
  --shadow-1:0 1px 2px rgba(15,17,16,.06);
  --shadow-2:0 10px 30px rgba(15,17,16,.10);
  --font:"HarmonyOS Sans SC","MiSans","Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  background:var(--paper);
  color:var(--ink);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,h5{margin:0;font-weight:800;line-height:1.2;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
::selection{background:var(--lime);color:var(--ink)}

/* 容器 */
.container-x{width:100%;max-width:1320px;margin:0 auto;padding:0 24px}
@media (max-width:1399px){.container-x{max-width:1140px}}
@media (max-width:1199px){.container-x{max-width:960px}}
@media (max-width:991px){.container-x{max-width:720px}}
@media (max-width:767px){.container-x{max-width:100%;padding:0 20px}}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--paper);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 2px 14px rgba(15,17,16,.06)}
.header-inner{display:flex;align-items:center;gap:22px;height:78px}
.nav-side{flex:1 1 0;display:flex;align-items:center;gap:30px}
.nav-side.right{justify-content:flex-end}
.nav-link-x{
  position:relative;font-size:15px;font-weight:500;color:var(--deep);
  padding:6px 0;white-space:nowrap;transition:color .18s ease;
}
.nav-link-x::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--lime);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-link-x:hover{color:var(--ink)}
.nav-link-x:hover::after{transform:scaleX(1)}
.nav-link-x.active{font-weight:800;color:var(--ink)}
.nav-link-x.active::after{transform:scaleX(1)}
.brand{
  display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;
  font-size:19px;font-weight:800;letter-spacing:-.02em;white-space:nowrap;
}
.brand-mark{
  width:28px;height:28px;border-radius:7px;background:var(--ink);
  display:grid;place-items:center;flex:0 0 auto;
}
.brand-mark span{
  width:11px;height:11px;border-radius:2px;background:var(--lime);
  box-shadow:0 0 0 0 rgba(216,255,74,.4);
}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--ink);color:var(--paper);font-size:14px;font-weight:700;
  padding:11px 22px;border-radius:999px;white-space:nowrap;
  transition:background .18s ease,transform .18s ease,box-shadow .18s ease;
}
.nav-cta:hover{background:var(--deep);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.nav-cta:active{transform:translateY(0)}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);
  background:transparent;border-radius:var(--r);cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
  transition:border-color .18s ease,background .18s ease;
}
.nav-toggle:hover{border-color:var(--ink)}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--ink);border-radius:1px}

/* 移动端抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,17,16,.45);z-index:1050;
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
}
.drawer-mask.open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;left:0;bottom:0;width:308px;max-width:86vw;
  background:var(--paper);z-index:1060;border-right:1px solid var(--line);
  transform:translateX(-102%);transition:transform .26s ease;
  display:flex;flex-direction:column;
}
.nav-drawer.open{transform:translateX(0)}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 20px;border-bottom:1px solid var(--line);
}
.drawer-head .brand{font-size:16px}
.drawer-close{
  width:34px;height:34px;border:1px solid var(--line);background:transparent;
  border-radius:var(--r);cursor:pointer;font-size:18px;line-height:1;
  display:grid;place-items:center;transition:background .18s ease;
}
.drawer-close:hover{background:var(--mist)}
.drawer-nav{flex:1 1 auto;overflow-y:auto}
.drawer-nav a{
  display:flex;align-items:center;height:52px;padding:0 20px;
  font-size:15px;font-weight:500;border-bottom:1px solid var(--line);
  transition:background .16s ease,padding-left .16s ease;
}
.drawer-nav a:hover{background:var(--mist);padding-left:24px}
.drawer-nav a.active{font-weight:800;box-shadow:inset 3px 0 0 var(--lime)}
.drawer-foot{padding:18px 20px;border-top:1px solid var(--line);font-size:13px;color:var(--gray)}

/* 按钮 */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:16px;font-weight:700;padding:15px 30px;border-radius:var(--r);
  border:1px solid transparent;cursor:pointer;line-height:1.2;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-lime{background:var(--lime);color:var(--ink)}
.btn-lime:hover{background:var(--lime-deep);transform:translateY(-1px);box-shadow:0 8px 22px rgba(216,255,74,.35)}
.btn-lime:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;border-color:var(--line-dark);color:var(--paper)}
.btn-ghost:hover{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.btn-dark{background:var(--ink);color:var(--paper)}
.btn-dark:hover{background:#000;transform:translateY(-1px)}
.btn-outline{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn-block{width:100%}

/* 标签与徽章 */
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:.16em;
  text-transform:uppercase;color:var(--gray);margin-bottom:14px;
}
.eyebrow-lime{color:var(--lime)}
.badge-x{
  display:inline-block;font-size:12px;font-weight:700;line-height:1;
  padding:6px 12px;border-radius:999px;border:1px solid var(--line);
  color:var(--deep);background:rgba(255,255,255,.6);
}
.badge-x.coral{border-color:rgba(255,90,54,.35);color:var(--coral);background:rgba(255,90,54,.06)}

/* 面包屑 */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13px;color:rgba(245,244,239,.62);margin-bottom:26px}
.crumb a{transition:color .18s ease}
.crumb a:hover{color:var(--lime)}
.crumb .sep{opacity:.5}
.crumb .cur{color:var(--paper)}

/* Hero */
.hero-faq{position:relative;background:var(--ink);color:var(--paper);overflow:hidden;padding:84px 0 96px}
.hero-faq-bg{position:absolute;inset:0;opacity:.26}
.hero-faq-bg img{width:100%;height:100%;object-fit:cover;object-position:center}
.hero-faq::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(216,255,74,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(216,255,74,.055) 1px,transparent 1px);
  background-size:58px 58px;
}
.hero-faq-inner{position:relative;z-index:2;max-width:900px}
.hero-faq h1{
  font-size:clamp(34px,4.4vw,56px);
  font-weight:800;line-height:1.14;letter-spacing:-.02em;
  margin-bottom:22px;
}
.hero-faq h1 em{font-style:normal;color:var(--lime)}
.hero-lead{
  font-size:17px;line-height:1.85;color:rgba(245,244,239,.78);
  max-width:720px;margin-bottom:34px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-meta{display:flex;flex-wrap:wrap;gap:14px 28px;font-size:13.5px;color:rgba(245,244,239,.66)}
.hero-meta li{display:flex;align-items:center;gap:8px}
.hero-meta li::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);flex:0 0 auto;
}

/* 板块 */
.section{padding:104px 0}
.section-tight{padding:60px 0}
.section-dark{background:var(--ink);color:var(--paper)}
@media (max-width:991px){
  .section{padding:80px 0}
  .section-tight{padding:52px 0}
}
@media (max-width:767px){
  .section{padding:60px 0}
  .section-tight{padding:44px 0}
}

/* 数据条 */
.stat-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.stat-item{padding:32px 26px;border-right:1px solid var(--line)}
.stat-item:last-child{border-right:none}
.stat-num{
  font-size:38px;font-weight:800;line-height:1;letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
}
.stat-num em{font-style:normal;font-size:15px;font-weight:700;color:var(--gray);margin-left:5px;letter-spacing:0}
.stat-label{margin-top:10px;font-size:14px;color:var(--gray);line-height:1.6}
@media (max-width:767px){
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .stat-item{border-bottom:1px solid var(--line)}
  .stat-item:nth-child(2n){border-right:none}
  .stat-item:nth-last-child(-n+2){border-bottom:none}
  .stat-item{padding:24px 18px}
  .stat-num{font-size:30px}
}

/* 筛选胶囊 */
.filter-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin-top:48px}
.filter-title{font-size:15px;font-weight:700;color:var(--deep)}
.pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.pill{
  border:1px solid var(--line);background:transparent;border-radius:999px;
  padding:9px 20px;font-size:14px;font-weight:500;color:var(--deep);
  cursor:pointer;transition:background .18s ease,border-color .18s ease,color .18s ease,transform .18s ease;
}
.pill:hover{border-color:var(--ink);transform:translateY(-1px)}
.pill.active{background:var(--lime);border-color:var(--lime);color:var(--ink);font-weight:800}

/* FAQ 大号手风琴 */
.faq-head{max-width:760px;margin-bottom:46px}
.faq-head h2{font-size:clamp(28px,3.2vw,36px);margin-bottom:16px}
.faq-head p{color:var(--gray);font-size:16px;max-width:640px}
.faq-big{border-top:1px solid var(--line)}
.faq-big .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0}
.faq-big .accordion-button{
  display:flex;align-items:baseline;gap:20px;width:100%;
  background:transparent;box-shadow:none;border-radius:0!important;
  padding:30px 66px 30px 0;position:relative;
  font-size:21px;font-weight:700;line-height:1.5;color:var(--ink);
  transition:color .18s ease;
}
.faq-big .accordion-button:not(.collapsed){color:var(--ink);background:transparent;box-shadow:none}
.faq-big .accordion-button:hover{color:#000}
.faq-big .accordion-button:focus{box-shadow:none;outline:2px solid var(--lime);outline-offset:2px}
.faq-big .accordion-button::after{display:none}
.faq-big .fq-num{
  font-size:13px;font-weight:800;color:var(--gray);letter-spacing:.04em;
  font-variant-numeric:tabular-nums;flex:0 0 auto;min-width:26px;
  transition:color .18s ease;
}
.faq-big .accordion-button:not(.collapsed) .fq-num{color:var(--coral)}
.fq-icon{position:absolute;right:8px;top:50%;width:22px;height:22px;transform:translateY(-50%)}
.fq-icon::before,.fq-icon::after{content:"";position:absolute;background:var(--ink);transition:transform .22s ease,background .22s ease}
.fq-icon::before{left:0;top:10px;width:22px;height:2px;border-radius:1px}
.fq-icon::after{left:10px;top:0;width:2px;height:22px;border-radius:1px}
.accordion-button:not(.collapsed) .fq-icon::after{transform:scaleY(0)}
.accordion-button:not(.collapsed) .fq-icon::before{background:var(--coral)}
.faq-big .accordion-body{
  padding:0 66px 34px 46px;
  font-size:16px;line-height:1.9;color:var(--deep);
  max-width:820px;
}
.faq-big .accordion-body p+p{margin-top:14px}
.faq-big .accordion-collapse{transition:height .22s ease}
@media (max-width:767px){
  .faq-big .accordion-button{font-size:17px;padding:22px 48px 22px 0;gap:14px}
  .faq-big .accordion-body{padding:0 0 26px 40px;font-size:15.5px}
  .fq-icon{right:2px;width:18px;height:18px}
  .fq-icon::before{top:8px;width:18px}
  .fq-icon::after{left:8px;height:18px}
}

/* 深色 CTA 与表单 */
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.cta-copy h2{font-size:clamp(28px,3.2vw,38px);margin-bottom:20px}
.cta-copy p{color:rgba(245,244,239,.76);font-size:16.5px;margin-bottom:28px;max-width:520px}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15.5px;color:rgba(245,244,239,.82);
  padding:13px 0;border-bottom:1px dashed var(--line-dark);
}
.check-list li:last-child{border-bottom:none}
.check-list li::before{
  content:"";width:8px;height:8px;border-radius:2px;background:var(--lime);
  margin-top:9px;flex:0 0 auto;
}
.form-card{
  background:var(--paper);color:var(--ink);
  border-radius:var(--r);padding:32px;box-shadow:var(--shadow-2);
}
.form-card h3{font-size:20px;margin-bottom:8px}
.form-card .form-note{font-size:14px;color:var(--gray);margin-bottom:24px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:700;margin-bottom:8px;color:var(--deep)}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);
  border-radius:var(--r);background:#fff;font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:112px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--lime);box-shadow:0 0 0 2px rgba(216,255,74,.55);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--gray) 50%),linear-gradient(135deg,var(--gray) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.form-tip{
  margin-top:14px;font-size:13.5px;color:var(--deep);
  background:rgba(216,255,74,.32);border:1px solid rgba(216,255,74,.75);
  border-radius:var(--r);padding:11px 14px;
}
@media (max-width:991px){
  .cta-grid{grid-template-columns:1fr;gap:40px}
}

/* 相关分类卡片 */
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:42px}
.sec-head h2{font-size:clamp(26px,3vw,34px)}
.sec-head p{color:var(--gray);font-size:16px;margin-top:12px;max-width:620px}
.cat-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr;gap:24px}
.cat-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(216,255,74,.9)}
.cat-thumb{aspect-ratio:16/10;background:var(--mist);overflow:hidden}
.cat-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .32s ease}
.cat-card:hover .cat-thumb img{transform:scale(1.04)}
.cat-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto}
.cat-body h3{font-size:19px}
.cat-body p{font-size:14.5px;color:var(--gray);line-height:1.75}
.link-more{
  margin-top:auto;display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:700;color:var(--ink);
  border-bottom:1px solid var(--ink);padding-bottom:2px;align-self:flex-start;
  transition:border-color .18s ease,color .18s ease;
}
.link-more i{font-style:normal;transition:transform .18s ease}
.cat-card:hover .link-more{border-color:var(--lime)}
.cat-card:hover .link-more i{transform:translateX(4px)}
@media (max-width:991px){
  .cat-grid{grid-template-columns:1fr 1fr}
  .cat-card:first-child{grid-column:1/-1}
}
@media (max-width:600px){
  .cat-grid{grid-template-columns:1fr}
  .cat-card:first-child{grid-column:auto}
}

/* 页脚 */
.site-footer{background:var(--ink);color:var(--paper);padding:78px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:52px}
.footer-brand .brand{color:var(--paper);margin-bottom:20px}
.footer-brand .brand-mark{background:var(--paper)}
.footer-brand .brand-mark span{background:var(--ink)}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(245,244,239,.68);max-width:360px}
.footer-col h4{font-size:14px;font-weight:800;letter-spacing:.06em;margin-bottom:20px;color:var(--paper)}
.footer-col ul li{margin-bottom:12px;font-size:14.5px;color:rgba(245,244,239,.72)}
.footer-col ul li a{transition:color .18s ease}
.footer-col ul li a:hover{color:var(--lime)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;
  padding:24px 0 34px;border-top:1px solid var(--line-dark);
  font-size:13px;color:rgba(245,244,239,.55);
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:600px){
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .site-footer{padding-top:56px}
}

/* 动效 */
body.js [data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
body.js [data-reveal].in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  body.js [data-reveal]{opacity:1;transform:none;transition:none}
  *{transition-duration:.001ms!important;animation-duration:.001ms!important}
}

/* 响应式导航 */
@media (max-width:991px){
  .nav-side{display:none}
  .nav-toggle{display:flex}
  .header-inner{height:68px;gap:12px}
  .brand{flex:1 1 auto;justify-content:center;font-size:16.5px}
  .nav-cta{padding:10px 16px;font-size:13.5px}
  .hero-faq{padding:60px 0 68px}
}
@media (max-width:520px){
  .brand{font-size:15px}
  .brand-mark{width:22px;height:22px}
  .brand-mark span{width:9px;height:9px}
  .nav-cta{padding:9px 14px;font-size:13px}
  .hero-actions .btn-x{width:100%}
  .hero-meta{font-size:12.5px;gap:10px 18px}
}