/* roulang page: index */
:root{
  --bg-0:#070B14;
  --bg-1:#0C1524;
  --bg-2:#111C2E;
  --brand:#FF8A2B;
  --brand-2:#FFB24D;
  --accent:#24E0C8;
  --ink:#EAF2FF;
  --ink-2:#A9B8CF;
  --ink-3:#6B7C96;
  --line:rgba(36,224,200,.16);
  --glass:rgba(255,255,255,.06);
  --glass-2:rgba(255,255,255,.09);
  --ok:#3DD68C;
  --warn:#FFC53D;
  --err:#FF5C6C;
  --r-card:16px;
  --r-btn:12px;
  --r-input:10px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04), 0 18px 40px -18px rgba(0,0,0,.65);
  --nav-w:264px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:30px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color 200ms var(--ease);}
a:hover{color:var(--accent);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
table{border-collapse:collapse;width:100%;}
::selection{background:rgba(255,138,43,.35);color:#fff;}

body::-webkit-scrollbar,.side-nav::-webkit-scrollbar,.scroll-area::-webkit-scrollbar{width:8px;height:8px;}
body::-webkit-scrollbar-track,.side-nav::-webkit-scrollbar-track{background:rgba(255,255,255,.03);}
body::-webkit-scrollbar-thumb,.side-nav::-webkit-scrollbar-thumb{background:rgba(36,224,200,.22);border-radius:999px;}
body::-webkit-scrollbar-thumb:hover,.side-nav::-webkit-scrollbar-thumb:hover{background:rgba(36,224,200,.4);}

.ambient{
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(760px 420px at 12% -6%, rgba(255,138,43,.13), transparent 62%),
    radial-gradient(680px 380px at 96% 8%, rgba(36,224,200,.10), transparent 60%);
}
.grid-lines{
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  opacity:.5;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 40% 20%, #000 0%, transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 40% 20%, #000 0%, transparent 78%);
}

.container{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding:0 32px;
  position:relative;
  z-index:1;
}

/* ============ 左侧导航 ============ */
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--nav-w);
  z-index:60;
  display:flex;
  flex-direction:column;
  background:linear-gradient(180deg, rgba(12,21,36,.94), rgba(7,11,20,.96));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-right:1px solid var(--line);
  overflow-y:auto;
  overflow-x:hidden;
  transition:width 240ms var(--ease);
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  padding:22px 20px 18px;
  border-bottom:1px solid var(--line);
}
.brand-mark{
  width:40px;height:40px;
  flex:0 0 40px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#0A1018;
  font-weight:800;
  font-size:17px;
  box-shadow:0 0 24px -6px rgba(255,138,43,.6);
}
.brand-text{min-width:0;}
.brand-name{
  font-size:15px;
  font-weight:700;
  line-height:22px;
  letter-spacing:.01em;
  white-space:nowrap;
}
.brand-sub{
  font-size:12px;
  line-height:18px;
  color:var(--ink-3);
  white-space:nowrap;
  letter-spacing:.04em;
}
.nav-block{padding:18px 12px 10px;flex:1;}
.nav-caption{
  font-size:12px;
  line-height:18px;
  color:var(--ink-3);
  letter-spacing:.14em;
  padding:0 10px 10px;
  text-transform:uppercase;
}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  height:44px;
  padding:0 12px;
  border-radius:10px;
  color:var(--ink-2);
  font-size:14px;
  white-space:nowrap;
  transition:background 200ms var(--ease), color 200ms var(--ease);
}
.nav-item + .nav-item{margin-top:4px;}
.nav-item .nav-ico{
  flex:0 0 20px;
  width:20px;height:20px;
  display:flex;align-items:center;justify-content:center;
  color:var(--ink-3);
  transition:color 200ms var(--ease);
}
.nav-item .nav-ico svg{width:18px;height:18px;}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--ink);}
.nav-item:hover .nav-ico{color:var(--accent);}
.nav-item.is-active{
  background:rgba(255,138,43,.10);
  color:var(--ink);
  font-weight:600;
}
.nav-item.is-active .nav-ico{color:var(--brand);}
.nav-item.is-active::before{
  content:"";
  position:absolute;
  left:0;top:10px;bottom:10px;
  width:3px;
  border-radius:999px;
  background:var(--brand);
  box-shadow:0 0 14px 0 rgba(255,138,43,.8);
}
.nav-item .nav-count{
  margin-left:auto;
  font-size:11px;
  line-height:18px;
  padding:0 8px;
  border-radius:999px;
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--accent);
  font-variant-numeric:tabular-nums;
}
.nav-foot{
  padding:16px 16px 20px;
  border-top:1px solid var(--line);
}
.nav-foot .legal{
  margin-top:12px;
  font-size:12px;
  line-height:18px;
  color:var(--ink-3);
  text-align:center;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:transform 200ms var(--ease), box-shadow 200ms var(--ease), background 200ms var(--ease), border-color 200ms var(--ease), color 200ms var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#0A1018;
  box-shadow:0 0 24px -4px rgba(255,138,43,.55);
}
.btn-primary:hover{
  color:#0A1018;
  filter:brightness(1.08);
  box-shadow:0 0 34px -2px rgba(255,138,43,.75);
}
.btn-primary:active{transform:scale(.98);}
.btn-ghost{
  background:transparent;
  border:1px solid var(--line);
  color:var(--ink);
}
.btn-ghost:hover{
  border-color:var(--accent);
  background:rgba(36,224,200,.08);
  color:var(--ink);
}
.btn-ghost:active{transform:scale(.98);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid rgba(36,224,200,.45);
  outline-offset:2px;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--accent);
}
.text-link .arrow{transition:transform 200ms var(--ease);}
.text-link:hover .arrow{transform:translateX(6px);}

/* ============ 玻璃卡 ============ */
.glass-card{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  transition:border-color 220ms var(--ease), transform 220ms var(--ease), box-shadow 220ms var(--ease);
}
.glass-card.hoverable:hover{
  border-color:rgba(36,224,200,.4);
  transform:translateY(-3px);
  box-shadow:0 0 0 1px rgba(36,224,200,.25), 0 20px 44px -20px rgba(36,224,200,.35);
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  line-height:18px;
  padding:3px 10px;
  border-radius:999px;
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--accent);
  white-space:nowrap;
}
.badge::before{
  content:"";
  width:5px;height:5px;
  border-radius:999px;
  background:var(--accent);
  box-shadow:0 0 8px 0 rgba(36,224,200,.9);
}
.badge.badge-brand{color:var(--brand);border-color:rgba(255,138,43,.3);}
.badge.badge-brand::before{background:var(--brand);box-shadow:0 0 8px 0 rgba(255,138,43,.9);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
}
.section-head h2{
  font-size:28px;
  line-height:38px;
  font-weight:700;
  letter-spacing:-.01em;
}
.section-head .sub{
  margin-top:8px;
  font-size:14px;
  line-height:24px;
  color:var(--ink-2);
  max-width:62ch;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  line-height:18px;
  letter-spacing:.16em;
  color:var(--accent);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;height:1px;
  background:linear-gradient(90deg,transparent,var(--accent));
}
.line-clamp-2{
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.num{font-variant-numeric:tabular-nums;}

/* ============ 主区域 ============ */
.app-main{
  margin-left:var(--nav-w);
  position:relative;
  z-index:1;
  transition:margin-left 240ms var(--ease);
}
.section{padding:96px 0;position:relative;}
.section-tight{padding:72px 0;}
.section-line{
  border-top:1px solid var(--line);
  position:relative;
}
.section-line::before{
  content:"";
  position:absolute;
  top:-1px;left:0;
  width:180px;height:1px;
  background:linear-gradient(90deg,var(--accent),transparent);
}

/* ============ Hero ============ */
.hero{
  padding:84px 0 72px;
  position:relative;
  overflow:hidden;
}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
}
.hero h1{
  font-size:40px;
  line-height:52px;
  font-weight:700;
  letter-spacing:-.01em;
}
.hero h1 .hl{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-lead{
  margin-top:18px;
  font-size:17px;
  line-height:32px;
  color:var(--ink-2);
  max-width:46ch;
}
.hero-actions{
  margin-top:30px;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.hero-points{
  margin-top:34px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.hero-point{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  line-height:20px;
  color:var(--ink-2);
  padding:7px 14px;
  border-radius:999px;
  background:var(--glass);
  border:1px solid var(--line);
}
.hero-point svg{width:14px;height:14px;color:var(--accent);}
.hero-visual{
  position:relative;
  border-radius:20px;
  overflow:hidden;
  border:1px solid var(--line);
  min-height:380px;
  background:var(--bg-1);
  box-shadow:var(--shadow-card);
}
.hero-visual img{
  position:absolute;
  inset:0;
  width:100%;height:100%;
  object-fit:cover;
  opacity:.55;
}
.hero-visual .mask{
  position:absolute;
  inset:0;
  background:linear-gradient(150deg, rgba(7,11,20,.5) 0%, rgba(7,11,20,.85) 62%, rgba(7,11,20,.96) 100%);
}
.hero-visual .mesh{
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(to right, rgba(36,224,200,.10) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(36,224,200,.10) 1px, transparent 1px);
  background-size:38px 38px;
  opacity:.7;
}
.login-mock{
  position:relative;
  z-index:2;
  padding:34px 28px;
}
.login-mock .mock-title{
  font-size:15px;
  font-weight:600;
  margin-bottom:6px;
}
.login-mock .mock-sub{
  font-size:12px;
  line-height:20px;
  color:var(--ink-3);
  margin-bottom:22px;
}
.mock-field{
  height:44px;
  border-radius:var(--r-input);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  display:flex;
  align-items:center;
  padding:0 14px;
  font-size:13px;
  color:var(--ink-3);
  margin-bottom:12px;
}
.mock-field.is-focus{
  border-color:rgba(36,224,200,.5);
  box-shadow:0 0 0 2px rgba(36,224,200,.18);
  color:var(--ink-2);
}
.mock-tabs{display:flex;gap:8px;margin-bottom:20px;}
.mock-tab{
  font-size:12px;
  padding:5px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  color:var(--ink-3);
}
.mock-tab.on{
  color:#0A1018;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  border-color:transparent;
  font-weight:600;
}
.mock-meta{
  margin-top:16px;
  display:flex;
  justify-content:space-between;
  font-size:12px;
  color:var(--ink-3);
}
.hero-float{
  position:absolute;
  right:-6px;bottom:22px;
  z-index:3;
  padding:12px 16px;
  border-radius:14px;
  background:rgba(12,21,36,.86);
  border:1px solid var(--line);
  backdrop-filter:blur(12px);
  font-size:12px;
  line-height:20px;
  color:var(--ink-2);
  box-shadow:0 18px 40px -20px rgba(0,0,0,.8);
}
.hero-float strong{color:var(--accent);font-variant-numeric:tabular-nums;}

/* ============ 痛点段 ============ */
.pain-grid{
  display:grid;
  grid-template-columns:4fr 8fr;
  gap:48px;
  align-items:start;
}
.pain-list{display:flex;flex-direction:column;gap:18px;}
.pain-card{
  padding:22px 24px;
  display:flex;
  gap:16px;
  align-items:flex-start;
}
.pain-card:nth-child(odd){margin-left:-12px;}
.pain-card:nth-child(even){margin-right:-12px;margin-left:36px;}
.pain-ico{
  flex:0 0 40px;
  width:40px;height:40px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,138,43,.12);
  border:1px solid rgba(255,138,43,.26);
  color:var(--brand);
}
.pain-ico svg{width:20px;height:20px;}
.pain-card h3{font-size:16px;line-height:26px;font-weight:600;margin-bottom:6px;}
.pain-card p{font-size:14px;line-height:24px;color:var(--ink-2);}

/* ============ 流程面板 ============ */
.flow-wrap{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:52px;
  align-items:center;
}
.flow-panel{padding:32px 30px;}
.flow-list{position:relative;padding-left:8px;}
.flow-list::before{
  content:"";
  position:absolute;
  left:24px;top:22px;bottom:22px;
  width:1px;
  background:linear-gradient(180deg, rgba(36,224,200,.5), rgba(36,224,200,.08));
}
.flow-step{
  position:relative;
  display:flex;
  gap:20px;
  padding:16px 0;
}
.flow-node{
  flex:0 0 34px;
  width:34px;height:34px;
  border-radius:999px;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  background:var(--bg-2);
  border:1px solid var(--line);
  color:var(--ink-2);
  position:relative;
  z-index:1;
}
.flow-step.is-current .flow-node{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#0A1018;
  border-color:transparent;
  box-shadow:0 0 0 4px rgba(36,224,200,.22), 0 0 26px -6px rgba(36,224,200,.9);
}
.flow-step h3{font-size:16px;line-height:26px;font-weight:600;margin-bottom:4px;}
.flow-step p{font-size:14px;line-height:24px;color:var(--ink-2);max-width:52ch;}
.flow-step .tagline{margin-top:8px;}

/* ============ 数据条 ============ */
.stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  padding:38px 0;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.stat{
  text-align:center;
  padding:0 20px;
  position:relative;
}
.stat + .stat::before{
  content:"";
  position:absolute;
  left:0;top:12%;
  height:76%;
  width:1px;
  background:var(--line);
}
.stat .value{
  font-size:38px;
  line-height:48px;
  font-weight:700;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.stat .label{
  margin-top:6px;
  font-size:12px;
  line-height:20px;
  color:var(--ink-3);
  letter-spacing:.04em;
}

/* ============ 最新信息 ============ */
.post-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}
.post-card{
  display:flex;
  flex-direction:column;
  overflow:hidden;
  min-height:100%;
}
.post-card .cover{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--bg-2);
}
.post-card .cover img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform 320ms var(--ease);
}
.post-card:hover .cover img{transform:scale(1.04);}
.post-card .cover .cover-fallback{
  position:absolute;
  inset:0;
  display:flex;align-items:center;justify-content:center;
  font-size:34px;
  font-weight:800;
  color:rgba(255,138,43,.8);
  background-image:
    linear-gradient(to right, rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:28px 28px;
}
.post-card .cover::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, transparent 40%, rgba(7,11,20,.72) 100%);
}
.post-body{
  padding:18px 20px 20px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1;
}
.post-body h3{
  font-size:16px;
  line-height:26px;
  font-weight:600;
  transition:color 200ms var(--ease);
}
.post-card:hover .post-body h3{color:var(--brand);}
.post-body .excerpt{
  font-size:13px;
  line-height:23px;
  color:var(--ink-2);
}
.post-foot{
  margin-top:auto;
  padding-top:12px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:12px;
  line-height:20px;
  color:var(--ink-3);
  font-variant-numeric:tabular-nums;
}
.post-foot .go{color:var(--accent);}
.empty-card{
  grid-column:1 / -1;
  padding:52px 32px;
  text-align:center;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:14px;
}
.empty-card .e-ico{
  width:52px;height:52px;
  border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(36,224,200,.10);
  border:1px solid var(--line);
  color:var(--accent);
}
.empty-card p{font-size:14px;color:var(--ink-2);}

/* ============ 证言 ============ */
.voice-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:22px;
}
.voice-card{
  padding:26px 26px 22px;
  position:relative;
}
.voice-card:nth-child(even){transform:translateY(22px);}
.voice-card:nth-child(even):hover{transform:translateY(19px);}
.voice-card .quote{
  font-size:44px;
  line-height:32px;
  font-weight:700;
  color:rgba(36,224,200,.35);
  font-family:Georgia,serif;
  margin-bottom:10px;
}
.voice-card p{font-size:15px;line-height:28px;color:var(--ink-2);}
.voice-card .from{
  margin-top:18px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:13px;
  line-height:22px;
  color:var(--ink-3);
}

/* ============ FAQ ============ */
.faq-wrap{
  max-width:820px;
  margin:0 auto;
}
.faq-item{
  border-bottom:1px solid var(--line);
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  height:56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  transition:color 200ms var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item .sign{
  flex:0 0 26px;
  width:26px;height:26px;
  border-radius:999px;
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;
  line-height:1;
  color:var(--accent);
  transition:transform 200ms var(--ease), background 200ms var(--ease);
}
.faq-item[open] .sign{
  transform:rotate(45deg);
  background:rgba(36,224,200,.10);
}
.faq-item .answer{
  font-size:15px;
  line-height:30px;
  color:var(--ink-2);
  padding:0 46px 22px 0;
}

/* ============ CTA ============ */
.cta-band{
  position:relative;
  padding:38px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(36,224,200,.85), rgba(255,138,43,.7), transparent);
}
.cta-band h2{font-size:24px;line-height:34px;font-weight:700;}
.cta-band p{margin-top:8px;font-size:14px;line-height:24px;color:var(--ink-2);max-width:56ch;}

/* ============ 页脚 ============ */
.site-foot{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(12,21,36,.5), rgba(7,11,20,.9));
  padding:64px 0 30px;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px;
}
.foot-brand{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:16px;
}
.foot-brand .brand-mark{width:36px;height:36px;flex:0 0 36px;font-size:15px;border-radius:10px;}
.foot-name{font-size:15px;font-weight:700;line-height:22px;}
.foot-desc{font-size:13px;line-height:24px;color:var(--ink-3);max-width:38ch;}
.foot-col h4{
  font-size:13px;
  line-height:22px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:14px;
  letter-spacing:.04em;
}
.foot-col li{margin-bottom:10px;}
.foot-col a,.foot-col span{
  font-size:13px;
  line-height:22px;
  color:var(--ink-3);
}
.foot-col a:hover{color:var(--accent);}
.foot-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12px;
  line-height:20px;
  color:var(--ink-3);
}
.foot-bottom .dot{margin:0 8px;opacity:.5;}

/* ============ 移动端导航 ============ */
.mobile-bar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:64px;
  z-index:80;
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  background:rgba(7,11,20,.92);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.mobile-bar .brand{padding:0;border:none;gap:10px;}
.mobile-bar .brand-mark{width:34px;height:34px;flex:0 0 34px;font-size:15px;border-radius:10px;}
.mobile-bar .brand-name{font-size:14px;line-height:20px;}
.burger{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:10px;
  border:1px solid var(--line);
  color:var(--ink);
}
.burger svg{width:20px;height:20px;}
.drawer{
  position:fixed;
  inset:0;
  z-index:90;
  background:rgba(7,11,20,.98);
  backdrop-filter:blur(16px);
  transform:translateY(-100%);
  transition:transform 240ms var(--ease);
  display:flex;
  flex-direction:column;
  padding:16px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);}
.drawer-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.drawer-close{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:10px;
  border:1px solid var(--line);
  color:var(--ink);
}
.drawer nav{padding:18px 0;flex:1;}
.drawer .nav-item{height:48px;font-size:15px;}
.drawer-foot{padding-top:16px;border-top:1px solid var(--line);}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  .container{max-width:1080px;}
}
@media (min-width:1024px) and (max-width:1279px){
  :root{--nav-w:88px;}
  .side-nav{width:88px;}
  .side-nav:hover{width:264px;box-shadow:24px 0 60px -30px rgba(0,0,0,.85);}
  .side-nav .brand-text,
  .side-nav .nav-caption,
  .side-nav .nav-item .label,
  .side-nav .nav-item .nav-count,
  .side-nav .nav-foot .legal{opacity:0;width:0;overflow:hidden;white-space:nowrap;transition:opacity 180ms var(--ease);}
  .side-nav:hover .brand-text,
  .side-nav:hover .nav-caption,
  .side-nav:hover .nav-item .label,
  .side-nav:hover .nav-item .nav-count,
  .side-nav:hover .nav-foot .legal{opacity:1;width:auto;}
  .side-nav .nav-block{padding-left:12px;padding-right:12px;}
  .side-nav .brand{justify-content:center;}
  .side-nav:hover .brand{justify-content:flex-start;}
  .side-nav .nav-item{justify-content:center;}
  .side-nav:hover .nav-item{justify-content:flex-start;}
  .hero h1{font-size:34px;line-height:46px;}
}
@media (max-width:1023px){
  :root{--nav-w:0px;}
  .side-nav{display:none;}
  .mobile-bar{display:flex;}
  .app-main{margin-left:0;padding-top:64px;}
  .section{padding:64px 0;}
  .section-tight{padding:52px 0;}
  .hero{padding:48px 0 52px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero h1{font-size:30px;line-height:40px;}
  .hero-lead{font-size:15px;line-height:28px;}
  .pain-grid{grid-template-columns:1fr;gap:28px;}
  .pain-card:nth-child(odd),
  .pain-card:nth-child(even){margin-left:0;margin-right:0;}
  .flow-wrap{grid-template-columns:1fr;gap:28px;}
  .stats{grid-template-columns:repeat(2,1fr);gap:28px 0;}
  .stat:nth-child(3)::before{display:none;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .voice-grid{grid-template-columns:1fr;}
  .voice-card:nth-child(even){transform:none;}
  .voice-card:nth-child(even):hover{transform:translateY(-3px);}
  .foot-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
  .cta-band{padding:30px 24px;}
  .container{padding:0 24px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:26px;}
  .section-head h2{font-size:22px;line-height:32px;}
  .post-grid{grid-template-columns:1fr;}
  .stats{grid-template-columns:1fr;gap:24px;}
  .stat + .stat::before{display:none;}
  .stat + .stat{padding-top:22px;border-top:1px solid var(--line);}
  .hero-actions .btn{width:100%;}
  .hero-visual{min-height:320px;}
  .hero-float{right:12px;bottom:12px;}
  .flow-panel{padding:22px 18px;}
  .cta-band h2{font-size:20px;line-height:30px;}
  .cta-band .btn{width:100%;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:519px){
  .hero h1{font-size:26px;line-height:36px;}
  .pain-card{padding:18px;}
  .voice-card{padding:20px;}
  .login-mock{padding:24px 18px;}
}

/* roulang page: article */
:root{
    --bg-0:#070B14;
    --bg-1:#0C1524;
    --bg-2:#111C2E;
    --brand:#FF8A2B;
    --brand-2:#FFB24D;
    --accent:#24E0C8;
    --ink:#EAF2FF;
    --ink-2:#A9B8CF;
    --ink-3:#6B7C96;
    --line:rgba(36,224,200,.16);
    --line-soft:rgba(255,255,255,.08);
    --glass:rgba(255,255,255,.06);
    --glass-2:rgba(255,255,255,.09);
    --ok:#3DD68C;
    --warn:#FFC53D;
    --err:#FF5C6C;
    --r-card:16px;
    --r-btn:12px;
    --r-input:10px;
    --shadow-card:inset 0 1px 0 rgba(255,255,255,.04), 0 18px 40px -18px rgba(0,0,0,.65);
    --ease:cubic-bezier(.22,.61,.36,1);
    --nav-w:264px;
  }

  *,*::before,*::after{box-sizing:border-box;}

  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

  body{
    margin:0;
    background-color:var(--bg-0);
    background-image:
      linear-gradient(rgba(36,224,200,.035) 1px, transparent 1px),
      linear-gradient(90deg, rgba(36,224,200,.035) 1px, transparent 1px);
    background-size:64px 64px;
    color:var(--ink);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.875;
    -webkit-font-smoothing:antialiased;
  }

  a{color:inherit;text-decoration:none;transition:color 200ms var(--ease),border-color 200ms var(--ease),background-color 200ms var(--ease);}
  img{max-width:100%;display:block;border-style:none;}
  button,input,select,textarea{font:inherit;color:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  table{border-collapse:collapse;}

  a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
    outline:2px solid rgba(36,224,200,.45);
    outline-offset:2px;
    border-radius:8px;
  }

  ::-webkit-scrollbar{width:10px;height:10px;}
  ::-webkit-scrollbar-track{background:var(--bg-0);}
  ::-webkit-scrollbar-thumb{background:rgba(36,224,200,.18);border-radius:999px;}
  ::-webkit-scrollbar-thumb:hover{background:rgba(36,224,200,.34);}

  .container{
    width:100%;
    max-width:1120px;
    margin:0 auto;
    padding-left:32px;
    padding-right:32px;
  }

  .num{font-variant-numeric:tabular-nums;}

  /* ============ 布局骨架 ============ */
  .layout{display:flex;min-height:100vh;}
  .main-wrap{flex:1;min-width:0;margin-left:var(--nav-w);display:flex;flex-direction:column;}

  /* ============ 左侧竖向导航 ============ */
  .side-nav{
    position:fixed;
    top:0;left:0;bottom:0;
    width:var(--nav-w);
    display:flex;
    flex-direction:column;
    gap:20px;
    padding:22px 16px 18px;
    background:linear-gradient(180deg, rgba(12,21,36,.96), rgba(7,11,20,.96));
    backdrop-filter:blur(18px) saturate(140%);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
    border-right:1px solid var(--line);
    overflow-y:auto;
    z-index:60;
  }

  .brand{
    display:flex;
    align-items:center;
    gap:10px;
    padding:6px 8px 12px;
    border-bottom:1px solid var(--line-soft);
  }
  .brand-mark{
    width:36px;height:36px;
    flex:0 0 36px;
    display:flex;align-items:center;justify-content:center;
    border-radius:11px;
    background:linear-gradient(135deg,var(--brand),var(--brand-2));
    color:#0A1018;
    font-weight:700;
    font-size:17px;
    box-shadow:0 0 22px -6px rgba(255,138,43,.75);
  }
  .brand-name{
    font-size:15px;
    font-weight:700;
    letter-spacing:-.01em;
    line-height:1.35;
    color:var(--ink);
  }
  .brand-sub{
    display:block;
    margin-top:2px;
    font-size:12px;
    line-height:1.5;
    color:var(--ink-3);
    font-weight:400;
  }

  .nav-list{display:flex;flex-direction:column;gap:4px;}
  .nav-item{
    position:relative;
    display:flex;
    align-items:center;
    gap:10px;
    height:44px;
    padding:0 12px;
    border-radius:11px;
    font-size:14.5px;
    color:var(--ink-2);
    border:1px solid transparent;
    transition:all 200ms var(--ease);
  }
  .nav-item svg{width:17px;height:17px;flex:0 0 17px;stroke:currentColor;opacity:.85;}
  .nav-item:hover{
    color:var(--ink);
    background:rgba(36,224,200,.07);
    border-color:rgba(36,224,200,.22);
  }
  .nav-item.active{
    color:var(--ink);
    background:rgba(255,138,43,.10);
    border-color:rgba(255,138,43,.28);
    font-weight:600;
  }
  .nav-item.active::before{
    content:"";
    position:absolute;
    left:-1px;top:9px;bottom:9px;
    width:3px;
    border-radius:2px;
    background:var(--brand);
    box-shadow:0 0 12px rgba(255,138,43,.85);
  }
  .nav-label{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

  .nav-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding-top:16px;border-top:1px solid var(--line-soft);}
  .nav-foot .btn{width:100%;}

  /* ============ 顶部移动导航 ============ */
  .mobile-bar{display:none;}

  .drawer{
    position:fixed;
    inset:0;
    z-index:90;
    padding:20px;
    background:rgba(7,11,20,.97);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    transform:translateY(-100%);
    transition:transform 240ms var(--ease);
    overflow-y:auto;
    visibility:hidden;
  }
  .drawer.open{transform:translateY(0);visibility:visible;}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line);}
  .drawer-close{
    width:44px;height:44px;
    display:flex;align-items:center;justify-content:center;
    border-radius:11px;
    background:var(--glass);
    border:1px solid var(--line);
    cursor:pointer;
  }
  .drawer-close svg{width:20px;height:20px;stroke:var(--ink);}
  .drawer-nav{display:flex;flex-direction:column;gap:8px;margin-top:18px;}
  .drawer-nav a{
    display:flex;align-items:center;
    height:52px;
    padding:0 16px;
    border-radius:12px;
    background:var(--glass);
    border:1px solid var(--line);
    font-size:15px;
    color:var(--ink-2);
  }
  .drawer-nav a.active{color:var(--ink);border-color:rgba(255,138,43,.35);background:rgba(255,138,43,.10);font-weight:600;}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:44px;
    padding:0 20px;
    border-radius:var(--r-btn);
    font-size:15px;
    font-weight:600;
    border:1px solid transparent;
    cursor:pointer;
    white-space:nowrap;
    transition:all 220ms var(--ease);
  }
  .btn-primary{
    background:linear-gradient(135deg,var(--brand),var(--brand-2));
    color:#0A1018;
    box-shadow:0 0 24px -4px rgba(255,138,43,.55);
  }
  .btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 34px -2px rgba(255,138,43,.72);transform:translateY(-1px);}
  .btn-primary:active{transform:scale(.98);}
  .btn-ghost{
    background:transparent;
    border-color:var(--line);
    color:var(--ink);
  }
  .btn-ghost:hover{background:rgba(36,224,200,.08);border-color:var(--accent);}
  .btn-sm{height:38px;padding:0 16px;font-size:14px;}

  .link-cta{
    display:inline-flex;align-items:center;gap:6px;
    font-size:14px;color:var(--accent);font-weight:500;
  }
  .link-cta span.arw{transition:transform 220ms var(--ease);display:inline-block;}
  .link-cta:hover span.arw{transform:translateX(8px);}

  /* ============ 通用组件 ============ */
  .glass{
    background:var(--glass);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--shadow-card);
    transition:all 220ms var(--ease);
  }
  .glass-hover:hover{
    border-color:rgba(36,224,200,.4);
    transform:translateY(-3px);
    box-shadow:0 0 0 1px rgba(36,224,200,.25), 0 20px 44px -20px rgba(36,224,200,.35);
  }

  .badge{
    display:inline-flex;align-items:center;gap:6px;
    height:26px;padding:0 11px;
    border-radius:999px;
    background:var(--glass-2);
    border:1px solid var(--line);
    font-size:12px;
    color:var(--accent);
    line-height:1;
  }
  .badge::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px var(--accent);}

  .tag{
    display:inline-flex;align-items:center;
    height:30px;padding:0 12px;
    border-radius:999px;
    background:rgba(255,255,255,.04);
    border:1px solid var(--line-soft);
    font-size:13px;
    color:var(--ink-2);
  }

  .sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
  .sec-title{font-size:26px;line-height:1.45;font-weight:700;letter-spacing:-.01em;}
  .sec-desc{margin-top:8px;font-size:15px;color:var(--ink-2);max-width:60ch;}

  .clamp2{
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }

  /* ============ 面包屑 ============ */
  .crumb{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:14px;
    color:var(--ink-3);
    padding:28px 0 0;
    flex-wrap:nowrap;
    overflow:hidden;
  }
  .crumb a{color:var(--ink-3);white-space:nowrap;}
  .crumb a:hover{color:var(--accent);}
  .crumb .sep{color:rgba(107,124,150,.6);}
  .crumb .now{color:var(--ink-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

  /* ============ 文章头 ============ */
  .article-head{padding:22px 0 34px;}
  .article-h1{
    font-size:34px;
    line-height:1.4;
    font-weight:700;
    letter-spacing:-.01em;
    max-width:34ch;
  }
  .meta-row{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:10px 14px;
    margin-top:18px;
    font-size:14px;
    color:var(--ink-3);
  }
  .meta-row .dot{color:rgba(107,124,150,.55);}
  .head-rule{position:relative;height:1px;margin-top:26px;background:var(--line-soft);}
  .head-rule::after{
    content:"";
    position:absolute;left:0;top:-1px;
    width:48px;height:2px;
    background:var(--accent);
    box-shadow:0 0 12px rgba(36,224,200,.8);
  }

  /* ============ 正文双栏 ============ */
  .article-layout{display:block;padding-bottom:8px;}
  .article-cols{display:grid;grid-template-columns:minmax(0,1fr);gap:44px;align-items:start;}

  .article-body{
    font-size:17px;
    line-height:2;
    color:#DCE7F7;
    max-width:72ch;
    min-height:260px;
  }
  .article-body > *:first-child{margin-top:0;}
  .article-body p{margin:0 0 20px;}
  .article-body h2{
    position:relative;
    margin:40px 0 16px;
    padding-left:14px;
    font-size:24px;
    line-height:1.5;
    font-weight:700;
    color:var(--ink);
    letter-spacing:-.01em;
  }
  .article-body h2::before{
    content:"";
    position:absolute;left:0;top:7px;bottom:7px;width:4px;
    border-radius:2px;
    background:var(--brand);
    box-shadow:0 0 12px rgba(255,138,43,.55);
  }
  .article-body h3{margin:28px 0 12px;font-size:19px;line-height:1.6;font-weight:700;color:var(--ink);}
  .article-body h4{margin:22px 0 10px;font-size:17px;font-weight:600;color:var(--ink);}
  .article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px;}
  .article-body ul li{position:relative;padding-left:2px;margin:6px 0;list-style:none;}
  .article-body ul li::before{
    content:"";
    position:absolute;left:-16px;top:15px;
    width:6px;height:6px;
    border-radius:2px;
    background:var(--accent);
    box-shadow:0 0 8px rgba(36,224,200,.7);
  }
  .article-body ol{list-style:decimal;}
  .article-body ol li{margin:6px 0;padding-left:4px;}
  .article-body ol li::marker{color:var(--accent);font-variant-numeric:tabular-nums;}
  .article-body blockquote{
    margin:24px 0;
    padding:16px 22px;
    background:var(--glass);
    border-left:3px solid var(--accent);
    border-radius:0 12px 12px 0;
    color:var(--ink-2);
    font-size:16px;
  }
  .article-body img{
    width:100%;
    margin:24px 0;
    border-radius:12px;
    border:1px solid var(--line);
  }
  .article-body a{color:var(--accent);border-bottom:1px solid rgba(36,224,200,.35);}
  .article-body a:hover{border-bottom-color:var(--accent);}
  .article-body strong{color:var(--ink);font-weight:700;}
  .article-body code{
    padding:2px 6px;
    border-radius:6px;
    background:var(--bg-2);
    font-family:ui-monospace,Menlo,Consolas,monospace;
    font-size:14.5px;
    color:var(--brand-2);
  }
  .article-body pre{
    margin:0 0 22px;
    padding:16px 18px;
    background:var(--bg-2);
    border:1px solid var(--line-soft);
    border-radius:12px;
    overflow-x:auto;
    line-height:1.75;
  }
  .article-body pre code{background:none;padding:0;color:#DCE7F7;}
  .article-body hr{margin:32px 0;border:none;height:1px;background:var(--line-soft);}
  .article-body table{
    width:100%;
    margin:22px 0;
    font-size:15px;
    border:1px solid var(--line);
    border-radius:12px;
    border-spacing:0;
    overflow:hidden;
  }
  .article-body thead th{
    background:var(--bg-2);
    color:var(--ink);
    text-align:left;
    font-weight:600;
    padding:12px 14px;
    border-bottom:1px solid var(--line);
  }
  .article-body tbody td{
    padding:12px 14px;
    color:var(--ink-2);
    border-top:1px solid var(--line-soft);
    font-variant-numeric:tabular-nums;
  }
  .article-body tbody tr:nth-child(even) td{background:rgba(255,255,255,.025);}

  .empty-state{
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:14px;
    min-height:260px;
    padding:44px 24px;
    text-align:center;
    background:var(--glass);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--shadow-card);
  }
  .empty-icon{
    width:52px;height:52px;
    display:flex;align-items:center;justify-content:center;
    border-radius:14px;
    background:rgba(36,224,200,.10);
    border:1px solid var(--line);
  }
  .empty-icon svg{width:24px;height:24px;stroke:var(--accent);}

  /* ============ 侧栏 ============ */
  .side-col{display:none;}
  .sticky-box{position:sticky;top:28px;display:flex;flex-direction:column;gap:18px;}
  .side-card{padding:20px;border-radius:var(--r-card);}
  .side-card h3{
    display:flex;align-items:center;gap:8px;
    font-size:14px;
    font-weight:600;
    color:var(--ink);
    padding-bottom:12px;
    margin-bottom:12px;
    border-bottom:1px solid var(--line-soft);
  }
  .side-card h3::before{
    content:"";width:5px;height:5px;border-radius:50%;
    background:var(--accent);box-shadow:0 0 8px var(--accent);
  }
  .toc-list{display:flex;flex-direction:column;gap:2px;max-height:340px;overflow-y:auto;}
  .toc-list a{
    display:block;
    padding:8px 10px;
    border-left:2px solid transparent;
    border-radius:0 8px 8px 0;
    font-size:14px;
    line-height:1.6;
    color:var(--ink-2);
  }
  .toc-list a:hover{color:var(--accent);background:rgba(36,224,200,.07);border-left-color:var(--accent);}
  .toc-empty{font-size:13.5px;color:var(--ink-3);line-height:1.8;}

  .quick-links{display:flex;flex-direction:column;gap:6px;}
  .quick-links a{
    display:flex;align-items:center;justify-content:space-between;
    gap:10px;
    padding:10px 12px;
    border-radius:10px;
    font-size:14px;
    color:var(--ink-2);
    border:1px solid transparent;
  }
  .quick-links a:hover{color:var(--ink);background:rgba(255,255,255,.05);border-color:var(--line);}
  .quick-links a span.m{color:var(--ink-3);font-size:12px;}

  .side-cta{
    padding:22px;
    border-radius:var(--r-card);
    background:linear-gradient(160deg, rgba(255,138,43,.16), rgba(36,224,200,.07));
    border:1px solid rgba(255,138,43,.28);
    box-shadow:0 0 0 1px rgba(255,138,43,.10), 0 20px 44px -22px rgba(255,138,43,.55);
  }
  .side-cta h4{font-size:16px;font-weight:700;color:var(--ink);line-height:1.5;}
  .side-cta p{margin-top:8px;font-size:13.5px;line-height:1.8;color:var(--ink-2);}
  .side-cta .btn{width:100%;margin-top:16px;}

  /* ============ 上下篇 ============ */
  .pager{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:56px;}
  .pager-card{padding:22px;border-radius:var(--r-card);}
  .pager-card .k{font-size:12px;color:var(--ink-3);letter-spacing:.06em;}
  .pager-card .t{margin-top:8px;font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;}
  .pager-card .d{margin-top:6px;font-size:13.5px;color:var(--ink-3);line-height:1.75;}

  /* ============ 相关推荐卡片 ============ */
  .card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
  .post-card{
    display:flex;
    flex-direction:column;
    overflow:hidden;
    border-radius:var(--r-card);
  }
  .post-thumb{
    position:relative;
    aspect-ratio:16 / 9;
    overflow:hidden;
    background:var(--bg-2);
  }
  .post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
  .post-card:hover .post-thumb img{transform:scale(1.04);}
  .post-thumb::after{
    content:"";
    position:absolute;inset:0;
    background:linear-gradient(180deg, rgba(7,11,20,.05), rgba(7,11,20,.55));
  }
  .post-body{display:flex;flex-direction:column;gap:10px;padding:18px;flex:1;}
  .post-title{font-size:16.5px;font-weight:600;line-height:1.6;color:var(--ink);}
  .post-desc{font-size:14px;line-height:1.85;color:var(--ink-3);}
  .post-foot{
    display:flex;align-items:center;justify-content:space-between;
    gap:10px;
    margin-top:auto;
    padding-top:12px;
    border-top:1px solid var(--line-soft);
    font-size:13px;
    color:var(--ink-3);
  }

  /* ============ CTA 条带 ============ */
  .cta-band{
    position:relative;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:28px;
    flex-wrap:wrap;
    margin:64px 0 0;
    padding:32px 34px;
    border-radius:var(--r-card);
    background:var(--glass);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    border:1px solid var(--line);
    box-shadow:var(--shadow-card);
    overflow:hidden;
  }
  .cta-band::before{
    content:"";
    position:absolute;left:0;right:0;top:0;height:1px;
    background:linear-gradient(90deg, transparent, var(--accent), var(--brand), transparent);
    opacity:.85;
  }
  .cta-band h3{font-size:22px;font-weight:700;line-height:1.5;letter-spacing:-.01em;}
  .cta-band p{margin-top:8px;font-size:14.5px;color:var(--ink-2);max-width:52ch;}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

  /* ============ 页脚 ============ */
  .site-foot{
    margin-top:72px;
    border-top:1px solid var(--line);
    background:linear-gradient(180deg, rgba(12,21,36,.55), rgba(7,11,20,.9));
  }
  .foot-grid{
    display:grid;
    grid-template-columns:1.6fr 1fr 1fr 1fr;
    gap:32px;
    padding:52px 0 36px;
  }
  .foot-brand{display:flex;align-items:center;gap:10px;}
  .foot-name{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
  .foot-desc{margin-top:14px;font-size:14px;line-height:1.9;color:var(--ink-3);max-width:38ch;}
  .foot-col h4{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:16px;}
  .foot-col ul{display:flex;flex-direction:column;gap:10px;}
  .foot-col li{font-size:14px;color:var(--ink-3);line-height:1.7;}
  .foot-col a{color:var(--ink-3);}
  .foot-col a:hover{color:var(--accent);}
  .foot-bottom{
    display:flex;align-items:center;justify-content:space-between;
    gap:16px;flex-wrap:wrap;
    padding:20px 0 28px;
    border-top:1px solid var(--line-soft);
    font-size:13px;
    color:var(--ink-3);
  }
  .foot-bottom .dot{margin:0 6px;color:rgba(107,124,150,.5);}

  /* ============ 响应式 ============ */
  @media (min-width:1280px){
    .article-cols{grid-template-columns:minmax(0,1fr) 300px;}
    .side-col{display:block;}
  }

  @media (max-width:1279px){
    .container{max-width:960px;}
  }

  @media (max-width:1023px){
    .side-nav{display:none;}
    .main-wrap{margin-left:0;padding-top:64px;}
    .mobile-bar{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      position:fixed;
      top:0;left:0;right:0;
      height:64px;
      padding:0 16px;
      z-index:70;
      background:rgba(7,11,20,.92);
      backdrop-filter:blur(16px) saturate(140%);
      -webkit-backdrop-filter:blur(16px) saturate(140%);
      border-bottom:1px solid var(--line);
    }
    .mobile-bar .brand{border-bottom:none;padding:0;}
    .burger{
      width:44px;height:44px;
      display:flex;align-items:center;justify-content:center;
      border-radius:11px;
      background:var(--glass);
      border:1px solid var(--line);
      cursor:pointer;
    }
    .burger svg{width:20px;height:20px;stroke:var(--ink);}
    .container{max-width:820px;padding-left:24px;padding-right:24px;}
    .article-h1{font-size:29px;}
    .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
    .cta-band{padding:28px;margin-top:52px;}
    .sticky-box{position:static;}
  }

  @media (max-width:639px){
    .container{padding-left:16px;padding-right:16px;}
    .article-h1{font-size:25px;line-height:1.45;}
    .article-body{font-size:16px;line-height:1.95;}
    .article-body h2{font-size:20px;}
    .article-body h3{font-size:17.5px;}
    .card-grid{grid-template-columns:minmax(0,1fr);}
    .pager{grid-template-columns:minmax(0,1fr);}
    .cta-band{flex-direction:column;align-items:flex-start;padding:24px;gap:20px;}
    .cta-actions{width:100%;}
    .cta-actions .btn{flex:1;}
    .foot-grid{grid-template-columns:1fr;gap:26px;padding:40px 0 28px;}
    .foot-bottom{flex-direction:column;align-items:flex-start;}
    .sec-head{flex-direction:column;align-items:flex-start;gap:10px;}
    .sec-title{font-size:22px;}
  }

/* roulang page: category1 */
:root{
    --bg-0:#070B14;
    --bg-1:#0C1524;
    --bg-2:#111C2E;
    --brand:#FF8A2B;
    --brand-2:#FFB24D;
    --accent:#24E0C8;
    --ink:#EAF2FF;
    --ink-2:#A9B8CF;
    --ink-3:#6B7C96;
    --line:rgba(36,224,200,.16);
    --glass:rgba(255,255,255,.06);
    --glass-2:rgba(255,255,255,.09);
    --ok:#3DD68C;
    --warn:#FFC53D;
    --err:#FF5C6C;
    --radius-card:16px;
    --radius-btn:12px;
    --radius-input:10px;
    --shadow-card: inset 0 1px 0 rgba(255,255,255,.04), 0 18px 40px -18px rgba(0,0,0,.65);
    --font: "PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
    --ease: cubic-bezier(.22,.61,.36,1);
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--bg-0);
    color:var(--ink);
    font-family:var(--font);
    font-size:16px;
    line-height:30px;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:0;
    background-image:
      linear-gradient(rgba(36,224,200,.045) 1px, transparent 1px),
      linear-gradient(90deg, rgba(36,224,200,.045) 1px, transparent 1px);
    background-size:64px 64px;
    -webkit-mask-image:radial-gradient(circle at 60% 0%, #000 0%, transparent 68%);
    mask-image:radial-gradient(circle at 60% 0%, #000 0%, transparent 68%);
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none;transition:color 200ms var(--ease)}
  a:hover{color:var(--accent)}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4,p{margin:0}
  :focus-visible{outline:2px solid rgba(36,224,200,.45);outline-offset:2px;border-radius:6px}

  .container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px}

  /* ============ 左侧竖向导航 ============ */
  .side-nav{
    position:fixed;
    left:0;top:0;bottom:0;
    width:264px;
    z-index:60;
    display:flex;
    flex-direction:column;
    background:linear-gradient(180deg, rgba(12,21,36,.94), rgba(7,11,20,.94));
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    border-right:1px solid var(--line);
    padding:22px 16px 20px;
    overflow-y:auto;
    overflow-x:hidden;
    transition:width 220ms var(--ease);
  }
  .side-nav::-webkit-scrollbar{width:6px}
  .side-nav::-webkit-scrollbar-thumb{background:rgba(36,224,200,.22);border-radius:999px}

  .nav-top{padding:0 4px 18px;border-bottom:1px solid var(--line);margin-bottom:16px}
  .brand{display:flex;align-items:center;gap:12px;color:var(--ink)}
  .brand:hover{color:var(--ink)}
  .brand-mark{
    flex:0 0 auto;
    width:40px;height:40px;
    display:grid;place-items:center;
    border-radius:12px;
    background:linear-gradient(135deg,var(--brand),var(--brand-2));
    color:#0A1018;
    font-weight:700;
    font-size:18px;
    box-shadow:0 0 24px -6px rgba(255,138,43,.65);
  }
  .brand-copy{display:flex;flex-direction:column;min-width:0}
  .brand-name{font-size:15px;font-weight:700;letter-spacing:-.01em;line-height:20px;white-space:nowrap}
  .brand-sub{font-size:12px;line-height:18px;color:var(--ink-3);white-space:nowrap}

  .nav-list{display:flex;flex-direction:column;gap:6px;flex:1}
  .nav-item{
    position:relative;
    display:flex;align-items:center;gap:12px;
    height:44px;
    padding:0 12px;
    border-radius:12px;
    font-size:14px;
    color:var(--ink-2);
    border:1px solid transparent;
    transition:background 200ms var(--ease), color 200ms var(--ease), border-color 200ms var(--ease);
  }
  .nav-item:hover{background:rgba(36,224,200,.08);color:var(--ink);border-color:var(--line)}
  .nav-item::before{
    content:"";
    position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:3px;height:0;
    border-radius:0 3px 3px 0;
    background:var(--brand);
    box-shadow:0 0 12px rgba(255,138,43,.7);
    transition:height 220ms var(--ease);
  }
  .nav-item.is-active{
    background:rgba(255,138,43,.10);
    color:var(--ink);
    font-weight:600;
    border-color:rgba(255,138,43,.22);
  }
  .nav-item.is-active::before{height:24px}
  .nav-ico{flex:0 0 auto;width:18px;height:18px;color:currentColor;opacity:.9}
  .nav-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

  .nav-bottom{padding-top:16px;margin-top:16px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:12px}
  .nav-note{font-size:12px;line-height:18px;color:var(--ink-3)}

  /* 按钮 */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 22px;
    border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;
    transition:transform 200ms var(--ease), box-shadow 200ms var(--ease), background 200ms var(--ease), border-color 200ms var(--ease), color 200ms var(--ease), filter 200ms var(--ease);
    white-space:nowrap;
  }
  .btn-primary{
    background:linear-gradient(135deg,var(--brand),var(--brand-2));
    color:#0A1018;
    box-shadow:0 0 24px -4px rgba(255,138,43,.55), inset 0 1px 0 rgba(255,255,255,.25);
  }
  .btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 34px -2px rgba(255,138,43,.7), inset 0 1px 0 rgba(255,255,255,.3);color:#0A1018}
  .btn-primary:active{transform:scale(.98)}
  .btn-ghost{
    background:transparent;
    border:1px solid var(--line);
    color:var(--ink);
  }
  .btn-ghost:hover{border-color:var(--accent);background:rgba(36,224,200,.08);color:var(--ink)}
  .btn-ghost:active{transform:scale(.98)}
  .btn-block{width:100%}
  .btn-sm{height:38px;padding:0 16px;font-size:14px}
  .link-cta{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--accent)}
  .link-cta .arrow{transition:transform 200ms var(--ease)}
  .link-cta:hover{color:var(--brand-2)}
  .link-cta:hover .arrow{transform:translateX(8px)}

  /* ============ 主内容区 ============ */
  .main-col{margin-left:264px;min-height:100vh;position:relative;z-index:1;display:flex;flex-direction:column}
  main{flex:1}

  /* 移动端顶栏 */
  .mobile-bar{
    display:none;
    position:fixed;top:0;left:0;right:0;height:64px;
    z-index:70;
    align-items:center;justify-content:space-between;
    padding:0 16px;
    background:rgba(9,14,25,.92);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    border-bottom:1px solid var(--line);
  }
  .burger{
    width:44px;height:44px;
    display:grid;place-items:center;
    border-radius:12px;
    border:1px solid var(--line);
    color:var(--ink);
  }
  .burger svg{width:22px;height:22px}
  .burger:hover{border-color:var(--accent);color:var(--accent)}

  .drawer-mask{
    position:fixed;inset:0;z-index:75;
    background:rgba(4,7,13,.6);
    opacity:0;visibility:hidden;
    transition:opacity 220ms var(--ease), visibility 220ms var(--ease);
    border:0;padding:0;
  }
  .drawer{
    position:fixed;top:0;left:0;right:0;z-index:80;
    background:linear-gradient(180deg,rgba(12,21,36,.99),rgba(7,11,20,.99));
    border-bottom:1px solid var(--line);
    padding:18px 16px 26px;
    transform:translateY(-102%);
    transition:transform 240ms var(--ease);
    max-height:100vh;
    overflow-y:auto;
  }
  .drawer.open{transform:translateY(0)}
  .drawer-mask.open{opacity:1;visibility:visible}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:14px;border-bottom:1px solid var(--line)}
  .drawer-close{
    width:44px;height:44px;display:grid;place-items:center;
    border-radius:12px;border:1px solid var(--line);color:var(--ink-2);font-size:22px;line-height:1;
  }
  .drawer-close:hover{color:var(--accent);border-color:var(--accent)}
  .drawer-list{display:flex;flex-direction:column;gap:8px;padding:16px 0}
  .drawer-item{
    display:flex;align-items:center;gap:12px;height:48px;padding:0 14px;
    border-radius:12px;border:1px solid transparent;color:var(--ink-2);font-size:15px;
  }
  .drawer-item:hover{background:rgba(36,224,200,.08);color:var(--ink)}
  .drawer-item.is-active{background:rgba(255,138,43,.12);border-color:rgba(255,138,43,.28);color:var(--ink);font-weight:600}
  .drawer-cta{margin-top:6px}

  /* ============ 页头 ============ */
  .page-head{
    position:relative;
    overflow:hidden;
    border-bottom:1px solid var(--line);
    background-image:linear-gradient(180deg, rgba(7,11,20,.72), rgba(7,11,20,.94)), url('/assets/images/backpic/back-1.webp');
    background-size:cover;
    background-position:center;
    padding:56px 0 48px;
  }
  .page-head::after{
    content:"";
    position:absolute;left:0;right:0;top:0;height:1px;
    background:linear-gradient(90deg, transparent, rgba(36,224,200,.55), transparent);
  }
  .ph-inner{
    display:grid;
    grid-template-columns:minmax(0,1fr) 320px;
    gap:40px;
    align-items:center;
    position:relative;
    z-index:1;
  }
  .crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-3);margin-bottom:14px}
  .crumb a{color:var(--ink-3)}
  .crumb a:hover{color:var(--accent)}
  .crumb-cur{color:var(--ink-2)}
  .page-head h1{
    font-size:40px;line-height:52px;font-weight:700;letter-spacing:-.01em;
    margin-bottom:12px;
  }
  .ph-sub{font-size:16px;line-height:30px;color:var(--ink-2);max-width:56ch;margin-bottom:18px}
  .ph-tags{display:flex;flex-wrap:wrap;gap:10px}
  .tag{
    display:inline-flex;align-items:center;gap:6px;
    height:28px;padding:0 12px;
    font-size:12px;line-height:18px;
    border-radius:999px;
    background:var(--glass);
    border:1px solid var(--line);
    color:var(--accent);
    backdrop-filter:blur(10px);
  }
  .tag::before{content:"";width:5px;height:5px;border-radius:999px;background:var(--accent);box-shadow:0 0 8px rgba(36,224,200,.8)}

  .ph-card{
    background:var(--glass);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    padding:20px;
  }
  .ph-card-row{
    display:flex;align-items:center;justify-content:space-between;
    padding:11px 0;
    border-bottom:1px dashed rgba(36,224,200,.14);
    font-size:14px;color:var(--ink-2);
  }
  .ph-card-row:last-of-type{border-bottom:0}
  .ph-card-row strong{
    color:var(--ink);
    font-variant-numeric:tabular-nums;
    font-size:16px;
  }
  .ph-card-note{margin-top:10px;font-size:13px;line-height:22px;color:var(--ink-3)}

  /* ============ 板块通用 ============ */
  .sec{padding:72px 0}
  .sec-tight{padding:56px 0}
  .sec-head{max-width:72ch;margin-bottom:36px}
  .sec-eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;line-height:18px;letter-spacing:.06em;
    color:var(--accent);margin-bottom:12px;
  }
  .sec-eyebrow::before{content:"";width:18px;height:1px;background:var(--accent)}
  .sec-head h2{font-size:28px;line-height:38px;font-weight:700;letter-spacing:-.01em;margin-bottom:12px}
  .sec-head p{color:var(--ink-2);font-size:16px;line-height:30px;max-width:72ch}

  /* ============ 时间线 ============ */
  .timeline{position:relative;max-width:860px}
  .tl-item{
    position:relative;
    display:grid;
    grid-template-columns:64px minmax(0,1fr);
    gap:24px;
    padding-bottom:34px;
  }
  .tl-item:last-child{padding-bottom:0}
  .tl-item::before{
    content:"";
    position:absolute;
    left:31.5px;top:66px;bottom:2px;
    width:1px;
    background:linear-gradient(180deg, rgba(36,224,200,.45), rgba(36,224,200,.06));
  }
  .tl-item:last-child::before{display:none}
  .tl-dot{
    width:64px;height:64px;
    display:grid;place-items:center;
    border-radius:999px;
    background:var(--glass-2);
    border:1px solid var(--line);
    color:var(--accent);
    font-size:18px;font-weight:700;
    font-variant-numeric:tabular-nums;
    backdrop-filter:blur(12px);
    position:relative;
    z-index:1;
    box-shadow:var(--shadow-card);
  }
  .tl-item:nth-child(2) .tl-dot,
  .tl-item:nth-child(4) .tl-dot{border-color:rgba(255,138,43,.34);color:var(--brand-2)}
  .tl-body{
    background:var(--glass);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    padding:20px 22px;
    transition:transform 220ms var(--ease), border-color 220ms var(--ease), box-shadow 220ms var(--ease);
  }
  .tl-body:hover{
    transform:translateY(-3px);
    border-color:rgba(36,224,200,.4);
    box-shadow:0 0 0 1px rgba(36,224,200,.25), 0 20px 44px -20px rgba(36,224,200,.35);
  }
  .tl-body h3{font-size:20px;line-height:30px;font-weight:700;margin-bottom:8px}
  .tl-body p{color:var(--ink-2);font-size:15px;line-height:28px}
  .tl-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
  .chip{
    display:inline-flex;align-items:center;gap:6px;
    height:26px;padding:0 10px;border-radius:999px;
    font-size:12px;line-height:18px;
    background:rgba(36,224,200,.08);
    border:1px solid var(--line);
    color:var(--ink-2);
  }
  .chip b{color:var(--accent);font-weight:600;font-variant-numeric:tabular-nums}

  /* ============ 入口卡片 2 列 ============ */
  .entries{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .entry{
    display:flex;flex-direction:column;
    background:var(--glass);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    padding:22px;
    transition:transform 220ms var(--ease), border-color 220ms var(--ease), box-shadow 220ms var(--ease);
  }
  .entry:hover{
    transform:translateY(-3px);
    border-color:rgba(36,224,200,.4);
    box-shadow:0 0 0 1px rgba(36,224,200,.25), 0 20px 44px -20px rgba(36,224,200,.35);
  }
  .entry-top{display:flex;align-items:center;gap:12px;margin-bottom:12px}
  .entry-ico{
    width:40px;height:40px;flex:0 0 auto;
    display:grid;place-items:center;
    border-radius:12px;
    background:rgba(36,224,200,.10);
    border:1px solid var(--line);
    color:var(--accent);
  }
  .entry-ico svg{width:20px;height:20px}
  .entry h3{font-size:18px;line-height:28px;font-weight:700}
  .entry p{color:var(--ink-2);font-size:15px;line-height:28px;flex:1}
  .entry-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
  .entry-foot span{font-size:13px;color:var(--ink-3)}

  /* ============ 图文要点 ============ */
  .split{
    display:grid;
    grid-template-columns:minmax(0,1fr) minmax(0,1fr);
    gap:40px;
    align-items:center;
  }
  .media-frame{
    position:relative;
    border-radius:var(--radius-card);
    overflow:hidden;
    border:1px solid var(--line);
    box-shadow:var(--shadow-card);
    background:var(--bg-2);
  }
  .media-frame img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 320ms var(--ease)}
  .media-frame:hover img{transform:scale(1.04)}
  .media-frame::after{
    content:"";
    position:absolute;inset:0;
    background:linear-gradient(180deg, rgba(7,11,20,0) 40%, rgba(7,11,20,.55));
    pointer-events:none;
  }
  .media-cap{font-size:13px;line-height:22px;color:var(--ink-3);margin-top:12px}
  .check-list{display:flex;flex-direction:column;gap:14px;margin-top:22px}
  .check-list li{display:flex;gap:12px;font-size:15px;line-height:28px;color:var(--ink-2)}
  .check-list li b{color:var(--ink);font-weight:600}
  .check-list li::before{
    content:"";
    flex:0 0 auto;
    width:8px;height:8px;margin-top:11px;
    border-radius:2px;
    background:var(--accent);
    box-shadow:0 0 10px rgba(36,224,200,.7);
  }

  /* ============ FAQ ============ */
  .faq{max-width:800px;margin:0 auto}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{
    width:100%;
    min-height:56px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    text-align:left;
    padding:14px 4px;
    font-size:16px;line-height:30px;font-weight:600;
    color:var(--ink);
    transition:color 200ms var(--ease);
  }
  .faq-q:hover{color:var(--accent)}
  .faq-sign{
    flex:0 0 auto;
    width:26px;height:26px;
    display:grid;place-items:center;
    border-radius:999px;
    border:1px solid var(--line);
    color:var(--accent);
    font-size:16px;line-height:1;
    transition:transform 200ms var(--ease), background 200ms var(--ease);
  }
  .faq-item.open .faq-sign{transform:rotate(45deg);background:rgba(36,224,200,.12)}
  .faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height 240ms var(--ease), opacity 220ms var(--ease);
    opacity:0;
  }
  .faq-item.open .faq-a{opacity:1}
  .faq-a-inner{padding:0 4px 20px;color:var(--ink-2);font-size:16px;line-height:30px}

  /* ============ CTA 条带 ============ */
  .cta-band{
    position:relative;
    display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
    background:var(--glass);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    padding:28px 32px;
    overflow:hidden;
  }
  .cta-band::before{
    content:"";
    position:absolute;left:0;right:0;top:0;height:1px;
    background:linear-gradient(90deg, transparent, rgba(36,224,200,.6), transparent);
  }
  .cta-band h3{font-size:22px;line-height:32px;font-weight:700;margin-bottom:6px}
  .cta-band p{color:var(--ink-2);font-size:15px;line-height:28px;max-width:62ch}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap}

  /* ============ 页脚 ============ */
  .site-foot{
    border-top:1px solid var(--line);
    background:linear-gradient(180deg, rgba(12,21,36,.6), rgba(7,11,20,.95));
    padding:56px 0 28px;
    margin-top:24px;
  }
  .foot-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1fr;
    gap:32px;
    padding-bottom:32px;
    border-bottom:1px solid var(--line);
  }
  .foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px}
  .foot-name{font-size:16px;font-weight:700;line-height:24px}
  .foot-desc{color:var(--ink-2);font-size:14px;line-height:26px;max-width:40ch}
  .foot-col h4{font-size:14px;line-height:24px;font-weight:700;margin-bottom:14px;color:var(--ink)}
  .foot-col ul{display:flex;flex-direction:column;gap:10px}
  .foot-col li{font-size:14px;line-height:24px;color:var(--ink-2)}
  .foot-col a{color:var(--ink-2)}
  .foot-col a:hover{color:var(--accent)}
  .foot-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    padding-top:22px;
    font-size:13px;line-height:22px;color:var(--ink-3);
  }
  .foot-bottom .dot{margin:0 8px;color:var(--ink-3)}

  /* ============ 响应式 ============ */
  @media (max-width:1279px){
    .container{padding:0 24px}
    .foot-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  }

  @media (min-width:1024px) and (max-width:1279px){
    .side-nav{width:88px;padding:22px 12px 20px}
    .side-nav:hover{width:264px;box-shadow:24px 0 60px -30px rgba(0,0,0,.9)}
    .brand-copy,.nav-text,.nav-note,.nav-btn-text{opacity:0;visibility:hidden;transition:opacity 160ms var(--ease)}
    .side-nav:hover .brand-copy,
    .side-nav:hover .nav-text,
    .side-nav:hover .nav-note,
    .side-nav:hover .nav-btn-text{opacity:1;visibility:visible}
    .nav-item{justify-content:center;padding:0}
    .side-nav:hover .nav-item{justify-content:flex-start;padding:0 12px}
    .nav-bottom .btn{padding:0;width:44px}
    .side-nav:hover .nav-bottom .btn{width:100%;padding:0 16px}
    .nav-top{padding:0 0 18px}
    .side-nav:hover .nav-top{padding:0 4px 18px}
    .main-col{margin-left:88px}
    .ph-inner{grid-template-columns:minmax(0,1fr) 280px;gap:28px}
    .page-head h1{font-size:34px;line-height:44px}
  }

  @media (max-width:1023px){
    .side-nav{display:none}
    .mobile-bar{display:flex}
    .main-col{margin-left:0}
    main{padding-top:64px}
    .page-head{padding:40px 0 36px}
    .page-head h1{font-size:32px;line-height:42px}
    .ph-inner{grid-template-columns:minmax(0,1fr);gap:24px}
    .ph-card{max-width:520px}
    .sec{padding:56px 0}
    .sec-head h2{font-size:24px;line-height:34px}
    .split{grid-template-columns:minmax(0,1fr);gap:28px}
    .entries{grid-template-columns:minmax(0,1fr)}
    .foot-grid{grid-template-columns:1fr 1fr;gap:26px}
    .cta-band{padding:24px}
  }

  @media (max-width:640px){
    body{font-size:15px;line-height:28px}
    .container{padding:0 16px}
    .page-head h1{font-size:26px;line-height:36px}
    .ph-sub{font-size:15px;line-height:28px}
    .sec{padding:48px 0}
    .sec-head{margin-bottom:26px}
    .sec-head h2{font-size:21px;line-height:32px}
    .tl-item{grid-template-columns:48px minmax(0,1fr);gap:14px;padding-bottom:26px}
    .tl-dot{width:48px;height:48px;font-size:16px}
    .tl-item::before{left:23.5px;top:50px}
    .tl-body{padding:18px}
    .tl-body h3{font-size:17px;line-height:27px}
    .cta-band{padding:20px;flex-direction:column;align-items:flex-start}
    .cta-actions{width:100%}
    .cta-actions .btn{width:100%}
    .foot-grid{grid-template-columns:1fr;gap:22px;padding-bottom:26px}
    .foot-bottom{flex-direction:column;align-items:flex-start;gap:6px}
    .entry{padding:18px}
  }

  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important}
  }

/* roulang page: category2 */
:root{
  --bg-0:#070B14; --bg-1:#0C1524; --bg-2:#111C2E;
  --brand:#FF8A2B; --brand-2:#FFB24D;
  --accent:#24E0C8;
  --ink:#EAF2FF; --ink-2:#A9B8CF; --ink-3:#6B7C96;
  --line:rgba(36,224,200,.16);
  --glass:rgba(255,255,255,.06);
  --glass-2:rgba(255,255,255,.09);
  --ok:#3DD68C; --warn:#FFC53D; --err:#FF5C6C;
  --r-card:16px; --r-btn:12px; --r-input:10px;
  --sh:0 1px 0 rgba(255,255,255,.04), 0 18px 40px -18px rgba(0,0,0,.65);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-w:264px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg-0);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.875;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit;margin:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid rgba(36,224,200,.45);outline-offset:2px;border-radius:8px}
::selection{background:rgba(255,138,43,.35);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#080D18}
::-webkit-scrollbar-thumb{background:rgba(36,224,200,.22);border-radius:999px;border:2px solid #080D18}
::-webkit-scrollbar-thumb:hover{background:rgba(36,224,200,.4)}

.grid-bg{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:72px 72px;
  -webkit-mask-image:radial-gradient(circle at 55% 0%, #000 0%, transparent 72%);
  mask-image:radial-gradient(circle at 55% 0%, #000 0%, transparent 72%);
}
.app{position:relative;z-index:1}

/* ---------- 左侧竖向导航 ---------- */
.sidenav{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  display:flex;flex-direction:column;gap:22px;
  padding:26px 18px 20px;
  background:rgba(12,21,36,.74);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-right:1px solid var(--line);
  overflow-y:auto;z-index:40;
}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{
  flex:0 0 auto;width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  font-weight:700;font-size:19px;color:#0A1018;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 0 20px -6px rgba(255,138,43,.6);
}
.brand-name{display:block;font-size:16px;font-weight:700;letter-spacing:-.01em;line-height:1.35}
.brand-sub{display:block;font-size:12px;line-height:1.5;color:var(--ink-3);margin-top:2px}
.nav-group-title{
  font-size:12px;letter-spacing:.08em;color:var(--ink-3);
  padding:0 10px 10px;text-transform:uppercase;
}
.nav-list{display:flex;flex-direction:column;gap:6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:44px;padding:0 12px;border-radius:12px;
  color:var(--ink-2);font-size:14.5px;
  border:1px solid transparent;
  transition:background 220ms var(--ease), color 220ms var(--ease), border-color 220ms var(--ease);
}
.nav-item:hover{background:var(--glass);color:var(--ink);border-color:var(--line)}
.nav-item.active{
  background:rgba(255,138,43,.10);color:var(--ink);border-color:rgba(255,138,43,.28);
}
.nav-item.active::before{
  content:"";position:absolute;left:-1px;top:9px;bottom:9px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
  box-shadow:0 0 14px -1px rgba(255,138,43,.9);
}
.nav-icon{flex:0 0 auto;width:18px;height:18px;color:var(--accent);opacity:.9}
.nav-item.active .nav-icon{color:var(--brand-2)}
.nav-label{flex:1 1 auto;line-height:1.4}
.nav-count{
  flex:0 0 auto;font-size:11px;line-height:1;padding:5px 8px;border-radius:999px;
  background:rgba(36,224,200,.12);color:var(--accent);border:1px solid rgba(36,224,200,.22);
  font-variant-numeric:tabular-nums;
}
.nav-tip{
  position:absolute;left:calc(100% + 12px);top:50%;transform:translate(-8px,-50%);
  white-space:nowrap;font-size:13px;padding:7px 12px;border-radius:10px;
  background:var(--bg-2);border:1px solid var(--line);box-shadow:var(--sh);
  opacity:0;pointer-events:none;transition:opacity 180ms var(--ease), transform 180ms var(--ease);z-index:5;
}
.nav-foot{margin-top:auto;display:flex;flex-direction:column;gap:14px}
.nav-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:44px;border-radius:var(--r-btn);font-size:14.5px;font-weight:600;color:#0A1018;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 0 24px -4px rgba(255,138,43,.55);
  transition:box-shadow 220ms var(--ease), filter 220ms var(--ease), transform 120ms var(--ease);
}
.nav-cta:hover{filter:brightness(1.08);box-shadow:0 0 34px -2px rgba(255,138,43,.7)}
.nav-cta:active{transform:scale(.98)}
.nav-copy{font-size:11.5px;line-height:1.7;color:var(--ink-3)}

/* ---------- 移动端顶栏与抽屉 ---------- */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;z-index:60;
  align-items:center;justify-content:space-between;gap:12px;padding:0 16px;
  background:rgba(12,21,36,.86);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.mobile-bar .brand-name{font-size:15px}
.burger{
  width:44px;height:44px;display:grid;place-items:center;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);color:var(--ink);
  transition:border-color 200ms var(--ease), background 200ms var(--ease);
}
.burger:hover{border-color:rgba(36,224,200,.45);background:rgba(36,224,200,.08)}
.burger svg{width:22px;height:22px}
.drawer{
  position:fixed;inset:0;z-index:80;display:flex;flex-direction:column;
  background:linear-gradient(180deg,rgba(7,11,20,.98),rgba(12,21,36,.99));
  backdrop-filter:blur(16px);
  transform:translateY(-100%);
  transition:transform 240ms var(--ease);
  padding:18px 18px 26px;overflow-y:auto;
}
.drawer.open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{
  width:44px;height:44px;display:grid;place-items:center;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);
}
.drawer-close svg{width:20px;height:20px}
.drawer-nav{display:flex;flex-direction:column;gap:8px;margin-bottom:22px}
.drawer-nav a{
  display:flex;align-items:center;gap:12px;min-height:52px;padding:0 16px;border-radius:14px;
  background:var(--glass);border:1px solid var(--line);color:var(--ink-2);font-size:15px;
}
.drawer-nav a.active{background:rgba(255,138,43,.12);border-color:rgba(255,138,43,.32);color:var(--ink)}
.drawer-nav a i{width:8px;height:8px;border-radius:50%;background:var(--accent);flex:0 0 auto}
.drawer-nav a.active i{background:var(--brand)}
body.lock{overflow:hidden}

/* ---------- 布局容器 ---------- */
.shell{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px}
.section{padding:72px 0}
.section-tight{padding:56px 0}
main{flex:1 1 auto}

/* ---------- 通用组件 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;color:var(--accent);letter-spacing:.06em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px rgba(36,224,200,.9)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:18px;padding:4px 12px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);color:var(--accent);
}
.badge::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform 120ms var(--ease), box-shadow 220ms var(--ease), background 220ms var(--ease), border-color 220ms var(--ease), color 220ms var(--ease);
}
.btn-primary{
  color:#0A1018;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 0 24px -4px rgba(255,138,43,.55);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 34px -2px rgba(255,138,43,.7)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{
  color:var(--ink);background:transparent;border-color:var(--line);
}
.btn-ghost:hover{border-color:var(--accent);background:rgba(36,224,200,.08)}
.btn-ghost:active{transform:scale(.98)}
.btn-link{
  display:inline-flex;align-items:center;gap:8px;font-size:14.5px;color:var(--accent);
}
.btn-link svg{width:16px;height:16px;transition:transform 200ms var(--ease)}
.btn-link:hover svg{transform:translateX(4px)}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap}
.sec-head h2{font-size:28px;line-height:38px;font-weight:700;letter-spacing:-.01em}
.sec-head p{color:var(--ink-2);font-size:15px;margin-top:8px;max-width:72ch}
.glass{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh);
}
.card-hover{transition:transform 220ms var(--ease), border-color 220ms var(--ease), box-shadow 220ms var(--ease)}
.card-hover:hover{
  transform:translateY(-3px);
  border-color:rgba(36,224,200,.4);
  box-shadow:0 0 0 1px rgba(36,224,200,.25), 0 20px 44px -20px rgba(36,224,200,.35);
}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;overflow:hidden;
  padding:44px 0 48px;min-height:240px;
  border-bottom:1px solid var(--line);
  background:var(--bg-1);
}
.page-head::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;z-index:3;
  background:linear-gradient(90deg,transparent,rgba(255,138,43,.75),rgba(36,224,200,.75),transparent);
}
.page-head__bg{
  position:absolute;inset:0;z-index:0;opacity:.32;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.page-head__bg::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg, rgba(7,11,20,.5) 0%, rgba(7,11,20,.96) 74%),
    linear-gradient(90deg, rgba(36,224,200,.08), transparent 55%);
}
.page-head__inner{position:relative;z-index:2}
.crumbs{display:flex;align-items:center;gap:8px;font-size:14px;line-height:24px;color:var(--ink-3);margin-bottom:20px;flex-wrap:wrap}
.crumbs a{transition:color 180ms var(--ease)}
.crumbs a:hover{color:var(--accent)}
.crumbs span.sep{color:var(--ink-3);opacity:.7}
.page-head__cols{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:end}
.page-head h1{
  font-size:40px;line-height:52px;font-weight:700;letter-spacing:-.01em;margin:16px 0 14px;
}
.page-head .lead{font-size:17px;line-height:32px;color:var(--ink-2);max-width:72ch}
.info-card{padding:22px;border-radius:var(--r-card)}
.info-card h3{font-size:15px;font-weight:600;margin-bottom:14px;color:var(--ink)}
.info-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px dashed rgba(36,224,200,.18)}
.info-row:last-of-type{border-bottom:0}
.info-row dt{font-size:13.5px;color:var(--ink-3)}
.info-row dd{font-size:14px;font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums}
.info-card .btn{width:100%;margin-top:14px;height:42px;font-size:14px}

/* ---------- 双栏要点 ---------- */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center}
.split h2{font-size:28px;line-height:38px;font-weight:700;margin:14px 0 18px;letter-spacing:-.01em}
.split p{font-size:17px;line-height:32px;color:var(--ink-2);max-width:72ch}
.check-list{margin-top:26px;display:flex;flex-direction:column;gap:16px}
.check-list li{display:flex;gap:14px;align-items:flex-start}
.check-list .tick{
  flex:0 0 auto;width:24px;height:24px;margin-top:3px;border-radius:8px;
  display:grid;place-items:center;color:var(--accent);
  background:rgba(36,224,200,.1);border:1px solid rgba(36,224,200,.3);
}
.check-list .tick svg{width:14px;height:14px}
.check-list strong{display:block;font-size:15.5px;font-weight:600;line-height:26px}
.check-list span{display:block;font-size:14.5px;line-height:26px;color:var(--ink-3)}
.split__media{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh)}
.split__media img{width:100%;height:340px;object-fit:cover;transition:transform 400ms var(--ease)}
.split__media:hover img{transform:scale(1.04)}
.split__media figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;font-size:13px;color:var(--ink-2);
  background:linear-gradient(180deg,transparent,rgba(7,11,20,.92));
}

/* ---------- 横向长条卡 ---------- */
.row-cards{display:flex;flex-direction:column;gap:16px}
.row-card{
  display:flex;gap:20px;align-items:flex-start;padding:24px 26px;border-radius:var(--r-card);
}
.row-card__icon{
  flex:0 0 auto;width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  color:var(--brand-2);background:rgba(255,138,43,.12);border:1px solid rgba(255,138,43,.28);
}
.row-card__icon svg{width:22px;height:22px}
.row-card h3{font-size:19px;line-height:30px;font-weight:600;margin-bottom:6px}
.row-card p{font-size:15px;line-height:30px;color:var(--ink-2);max-width:72ch}
.row-card__tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.tag{
  font-size:12px;line-height:18px;padding:4px 10px;border-radius:999px;
  background:var(--glass-2);border:1px solid var(--line);color:var(--ink-2);
}

/* ---------- 数据条 ---------- */
.stat-bar{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  border-radius:var(--r-card);padding:30px 10px;
}
.stat{position:relative;text-align:center;padding:0 12px}
.stat + .stat::before{
  content:"";position:absolute;left:0;top:14%;bottom:14%;width:1px;background:var(--line);
}
.stat b{
  display:block;font-size:34px;line-height:1.2;font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.stat b .unit{font-size:15px;color:var(--ink-2);margin-left:4px;font-weight:500}
.stat span{display:block;margin-top:8px;font-size:12.5px;color:var(--ink-3)}

/* ---------- 表单 ---------- */
.form-wrap{display:grid;grid-template-columns:minmax(0,0.9fr) minmax(0,1.1fr);gap:56px;align-items:start}
.form-wrap h2{font-size:28px;line-height:38px;font-weight:700;margin:14px 0 18px}
.form-wrap p{font-size:16.5px;line-height:32px;color:var(--ink-2);max-width:72ch}
.form-notes{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.form-notes li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-3);line-height:26px}
.form-notes li::before{content:"";flex:0 0 auto;width:6px;height:6px;margin-top:10px;border-radius:2px;background:var(--accent)}
.form{padding:28px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;color:var(--ink-2);margin-bottom:8px}
.input,.select,.textarea{
  width:100%;padding:12px 14px;border-radius:var(--r-input);
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--ink);
  font-size:15px;transition:border-color 200ms var(--ease), box-shadow 200ms var(--ease), background 200ms var(--ease);
}
.input::placeholder,.textarea::placeholder{color:#5C6B82}
.select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-3) 50%),linear-gradient(135deg,var(--ink-3) 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 14px) 50%;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.input:focus,.select:focus,.textarea:focus{
  outline:none;border-color:rgba(36,224,200,.6);
  box-shadow:0 0 0 2px rgba(36,224,200,.25);background:rgba(255,255,255,.06);
}
.textarea{min-height:120px;resize:vertical;line-height:28px}
.hint{font-size:12px;line-height:20px;color:var(--ink-3);margin-top:6px}
.form .btn{width:100%;margin-top:6px}
.form-ok{
  display:none;margin-top:14px;padding:12px 14px;border-radius:var(--r-input);
  font-size:14px;color:var(--ok);background:rgba(61,214,140,.1);border:1px solid rgba(61,214,140,.32);
}
.form-ok.show{display:block}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:800px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;padding:14px 0;background:transparent;border:0;cursor:pointer;
  text-align:left;font-size:16.5px;font-weight:600;color:var(--ink);
  transition:color 200ms var(--ease);
}
.faq-q:hover{color:var(--brand-2)}
.faq-q .mark{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--accent);font-size:16px;line-height:1;
  transition:transform 200ms var(--ease), border-color 200ms var(--ease);
}
.faq-item.open .faq-q .mark{transform:rotate(45deg);border-color:rgba(255,138,43,.5);color:var(--brand-2)}
.faq-a{display:none;padding:0 0 20px;font-size:16px;line-height:30px;color:var(--ink-2);max-width:72ch}
.faq-item.open .faq-a{display:block}

/* ---------- CTA 条带 ---------- */
.cta-band{
  position:relative;border-radius:var(--r-card);padding:34px 36px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,138,43,.7),rgba(36,224,200,.7),transparent);
}
.cta-band h2{font-size:24px;line-height:36px;font-weight:700;letter-spacing:-.01em}
.cta-band p{margin-top:8px;font-size:15px;line-height:28px;color:var(--ink-2);max-width:60ch}

/* ---------- 页脚 ---------- */
.site-foot{border-top:1px solid var(--line);background:var(--bg-1);margin-top:16px}
.foot-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  padding:56px 0 36px;
}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.foot-name{font-size:16px;font-weight:700}
.foot-desc{font-size:14px;line-height:28px;color:var(--ink-3);max-width:44ch}
.foot-col h4{font-size:14.5px;font-weight:600;margin-bottom:16px;color:var(--ink)}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col li{font-size:13.5px;line-height:24px;color:var(--ink-3)}
.foot-col a{transition:color 200ms var(--ease)}
.foot-col a:hover{color:var(--accent)}
.foot-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 30px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--ink-3);
}
.foot-bottom .dot{margin:0 6px}

/* ---------- 响应式 ---------- */
@media (max-width:1279px) and (min-width:1024px){
  :root{--nav-w:88px}
  .sidenav{padding:22px 12px 18px;align-items:center}
  .brand{justify-content:center}
  .brand-text,.brand-sub,.nav-group-title,.nav-label,.nav-count,.nav-cta span,.nav-copy{display:none}
  .nav-list{width:100%}
  .nav-item{justify-content:center;padding:0 8px}
  .nav-item:hover .nav-tip{opacity:1;transform:translate(0,-50%)}
  .nav-cta{width:44px;padding:0;font-size:0}
  .nav-cta::after{content:"→";font-size:18px}
  .nav-foot{align-items:center;width:100%}
}
@media (max-width:1023px){
  .sidenav{display:none}
  .mobile-bar{display:flex}
  .shell{margin-left:0;padding-top:64px}
  .container{padding:0 24px}
  .page-head__cols{grid-template-columns:minmax(0,1fr);gap:28px;align-items:start}
  .page-head h1{font-size:34px;line-height:46px}
  .split{grid-template-columns:minmax(0,1fr);gap:32px}
  .split__media img{height:280px}
  .form-wrap{grid-template-columns:minmax(0,1fr);gap:32px}
  .section{padding:56px 0}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;padding:44px 0 28px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .section-tight{padding:40px 0}
  .page-head{padding:32px 0 36px}
  .page-head h1{font-size:30px;line-height:40px;margin:14px 0 12px}
  .page-head .lead{font-size:15.5px;line-height:30px}
  .sec-head h2,.split h2,.form-wrap h2{font-size:23px;line-height:34px}
  .stat-bar{grid-template-columns:1fr 1fr;gap:22px 0;padding:24px 6px}
  .stat:nth-child(3)::before,
  .stat:nth-child(2n+1)::before{display:none}
  .stat b{font-size:28px}
  .row-card{flex-direction:column;padding:20px;gap:14px}
  .split__media img{height:220px}
  .form{padding:20px}
  .cta-band{padding:26px 22px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}

/* roulang page: category3 */
:root{
  --bg-0:#070B14;
  --bg-1:#0C1524;
  --bg-2:#111C2E;
  --brand:#FF8A2B;
  --brand-2:#FFB24D;
  --accent:#24E0C8;
  --ink:#EAF2FF;
  --ink-2:#A9B8CF;
  --ink-3:#6B7C96;
  --line:rgba(36,224,200,.16);
  --glass:rgba(255,255,255,.06);
  --glass-2:rgba(255,255,255,.09);
  --ok:#3DD68C;
  --warn:#FFC53D;
  --err:#FF5C6C;
  --r-card:16px;
  --r-btn:12px;
  --r-field:10px;
  --sh-card:0 1px 0 rgba(255,255,255,.04), 0 18px 40px -18px rgba(0,0,0,.65);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding:0;
  background:var(--bg-0);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.875;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
strong{font-weight:700;}
:focus-visible{outline:2px solid rgba(36,224,200,.45);outline-offset:2px;border-radius:6px;}

::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:rgba(255,255,255,.03);}
::-webkit-scrollbar-thumb{background:rgba(36,224,200,.22);border-radius:999px;border:2px solid transparent;background-clip:content-box;}
::-webkit-scrollbar-thumb:hover{background:rgba(36,224,200,.38);background-clip:content-box;}

.grid-bg{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 0%, rgba(0,0,0,.9), transparent 72%);
  mask-image:radial-gradient(circle at 50% 0%, rgba(0,0,0,.9), transparent 72%);
}

.container,.shell{
  width:100%;
  max-width:1040px;
  margin:0 auto;
  padding:0 32px;
}

/* ---------- 左侧竖向导航 ---------- */
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:264px;
  display:flex;
  flex-direction:column;
  background:linear-gradient(180deg, rgba(12,21,36,.92), rgba(7,11,20,.92));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-right:1px solid var(--line);
  z-index:60;
  overflow-y:auto;
  overscroll-behavior:contain;
}
.side-head{padding:24px 20px 18px;border-bottom:1px solid rgba(255,255,255,.05);}
.brand{display:flex;align-items:center;gap:12px;}
.brand-mark{
  flex:0 0 auto;
  width:40px;height:40px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:linear-gradient(135deg,#FF8A2B,#FFB24D);
  color:#0A1018;
  font-size:20px;font-weight:800;
  box-shadow:0 0 24px -6px rgba(255,138,43,.6);
}
.brand-text{display:flex;flex-direction:column;min-width:0;}
.brand-name{
  font-size:15px;font-weight:700;line-height:1.35;color:var(--ink);
  letter-spacing:-.01em;
}
.brand-sub{font-size:12px;line-height:1.5;color:var(--ink-3);white-space:nowrap;}

.side-menu{padding:16px 12px;display:flex;flex-direction:column;gap:4px;flex:1 1 auto;}
.side-item{
  position:relative;
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;
  border-radius:10px;
  color:var(--ink-2);
  font-size:14px;line-height:1;
  transition:background 220ms var(--ease),color 220ms var(--ease),transform 220ms var(--ease);
}
.side-item .si-ico{flex:0 0 auto;width:20px;height:20px;display:flex;align-items:center;justify-content:center;color:var(--ink-3);transition:color 220ms var(--ease);}
.side-item .si-ico svg{width:18px;height:18px;}
.side-item .si-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.side-item:hover{background:rgba(255,255,255,.05);color:var(--ink);transform:translateX(2px);}
.side-item:hover .si-ico{color:var(--accent);}
.side-item.active{background:rgba(255,138,43,.10);color:var(--ink);font-weight:600;}
.side-item.active .si-ico{color:var(--brand);}
.side-item.active::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:999px;
  background:var(--brand);
  box-shadow:0 0 12px rgba(255,138,43,.85);
}

.side-foot{padding:16px 20px 22px;border-top:1px solid rgba(255,255,255,.05);}
.side-copy{margin-top:12px;font-size:12px;line-height:1.6;color:var(--ink-3);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),background 220ms var(--ease),border-color 220ms var(--ease),filter 220ms var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#0A1018;
  box-shadow:0 0 24px -4px rgba(255,138,43,.55);
  border:1px solid rgba(255,178,77,.5);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 34px -2px rgba(255,138,43,.7);transform:translateY(-1px);}
.btn-primary:active{transform:scale(.98);}
.btn-ghost{
  background:transparent;
  color:var(--ink);
  border:1px solid var(--line);
}
.btn-ghost:hover{border-color:var(--accent);background:rgba(36,224,200,.08);}
.btn-ghost:active{transform:scale(.98);}
.btn-block{width:100%;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}

.link-cta{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-size:14px;font-weight:600;transition:gap 220ms var(--ease),color 220ms var(--ease);}
.link-cta:hover{gap:14px;color:#7df3e3;}

/* ---------- 玻璃卡通用 ---------- */
.glass{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
}
.glass-hover{transition:transform 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease);}
.glass-hover:hover{
  transform:translateY(-3px);
  border-color:rgba(36,224,200,.4);
  box-shadow:0 0 0 1px rgba(36,224,200,.25), 0 20px 44px -20px rgba(36,224,200,.35);
}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 12px;
  border-radius:999px;
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--accent);
  font-size:12px;line-height:1;
}
.badge::before{content:"";width:5px;height:5px;border-radius:999px;background:var(--accent);box-shadow:0 0 8px var(--accent);}

/* ---------- 主内容区偏移 ---------- */
.page-main{
  position:relative;
  z-index:1;
  margin-left:264px;
  min-height:100vh;
}

/* ---------- 移动顶栏 ---------- */
.mobile-bar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:64px;
  align-items:center;justify-content:space-between;
  padding:0 16px;
  background:rgba(9,14,25,.86);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  z-index:70;
}
.mobile-bar .brand-name{font-size:14px;}
.mobile-bar .brand-mark{width:34px;height:34px;font-size:17px;border-radius:10px;}
.burger{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:10px;
  color:var(--ink);
  border:1px solid var(--line);
  background:var(--glass);
}
.burger svg{width:22px;height:22px;}
.burger:active{transform:scale(.96);}

.drawer{
  position:fixed;inset:0;z-index:90;
  background:rgba(7,11,20,.98);
  backdrop-filter:blur(8px);
  transform:translateY(-100%);
  transition:transform 240ms var(--ease);
  display:flex;flex-direction:column;
  padding:14px 16px 26px;
  overflow-y:auto;
}
.drawer.open{transform:translateY(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  border-radius:10px;border:1px solid var(--line);background:var(--glass);color:var(--ink);
}
.drawer-close svg{width:20px;height:20px;}
.drawer-menu{display:flex;flex-direction:column;gap:6px;margin-bottom:20px;}
.drawer-item{
  display:flex;align-items:center;gap:12px;
  padding:13px 14px;
  border-radius:12px;
  border:1px solid transparent;
  color:var(--ink-2);
  font-size:15px;
  background:rgba(255,255,255,.03);
}
.drawer-item.active{background:rgba(255,138,43,.12);border-color:rgba(255,138,43,.35);color:var(--ink);font-weight:600;}
.drawer-item .di-dot{width:6px;height:6px;border-radius:999px;background:var(--ink-3);}
.drawer-item.active .di-dot{background:var(--brand);box-shadow:0 0 8px var(--brand);}
body.lock{overflow:hidden;}

/* ---------- 页头 ---------- */
.pg-head{
  position:relative;
  padding:44px 0 40px;
  min-height:240px;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg, rgba(7,11,20,.82), rgba(7,11,20,.96)), url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
}
.pg-head::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(36,224,200,.65),transparent);
}
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-3);margin-bottom:18px;flex-wrap:wrap;}
.crumb a{color:var(--ink-3);transition:color 200ms var(--ease);}
.crumb a:hover{color:var(--accent);}
.crumb span.sep{color:rgba(107,124,150,.6);}
.pg-head-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:40px;align-items:center;}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--accent);margin-bottom:12px;}
.pg-head h1{
  font-size:40px;line-height:1.3;font-weight:700;letter-spacing:-.01em;
  margin-bottom:14px;
}
.pg-sub{font-size:16px;line-height:1.8;color:var(--ink-2);max-width:60ch;}

.info-card{padding:20px 22px;}
.info-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.06);font-size:14px;}
.info-row:last-child{border-bottom:0;padding-bottom:0;}
.info-row:first-child{padding-top:0;}
.info-row span{color:var(--ink-3);}
.info-row strong{color:var(--ink);font-weight:600;font-variant-numeric:tabular-nums;}

/* ---------- 工具条 ---------- */
.tool-sec{padding:32px 0 0;}
.tool-bar{
  padding:18px 20px;
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
}
.search-wrap{
  position:relative;flex:1 1 280px;min-width:220px;
}
.search-wrap svg{
  position:absolute;left:14px;top:50%;transform:translateY(-50%);
  width:18px;height:18px;color:var(--ink-3);
}
.search-wrap input{
  width:100%;height:46px;
  padding:0 16px 0 42px;
  border-radius:var(--r-field);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  color:var(--ink);
  font-size:14px;
  outline:none;
  transition:border-color 200ms var(--ease),background 200ms var(--ease),box-shadow 200ms var(--ease);
}
.search-wrap input::placeholder{color:var(--ink-3);}
.search-wrap input:focus{border-color:rgba(36,224,200,.6);background:rgba(36,224,200,.06);box-shadow:0 0 0 2px rgba(36,224,200,.22);}
.chips{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.chip{
  height:34px;padding:0 14px;
  border-radius:999px;
  font-size:13px;line-height:1;
  color:var(--ink-2);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  transition:all 200ms var(--ease);
}
.chip:hover{color:var(--ink);border-color:rgba(36,224,200,.45);background:rgba(36,224,200,.07);}
.chip.active{color:#0A1018;background:linear-gradient(135deg,var(--brand),var(--brand-2));border-color:rgba(255,178,77,.6);font-weight:600;box-shadow:0 0 20px -6px rgba(255,138,43,.7);}

/* ---------- 主体两栏 ---------- */
.main-sec{padding:36px 0 0;}
.main-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:28px;align-items:start;}

.block-title{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:18px;}
.block-title h2{font-size:22px;line-height:1.5;font-weight:700;letter-spacing:-.01em;}
.block-title p{font-size:13px;color:var(--ink-3);}

/* 手风琴 */
.acc-item{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-card);
  margin-bottom:10px;
  overflow:hidden;
  transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.acc-item:hover{border-color:rgba(36,224,200,.34);}
.acc-item.open{
  border-color:rgba(36,224,200,.45);
  box-shadow:0 0 0 1px rgba(36,224,200,.18), 0 20px 44px -22px rgba(36,224,200,.3);
}
.acc-head{
  width:100%;
  display:flex;align-items:center;gap:14px;
  min-height:60px;
  padding:12px 20px;
  text-align:left;
  color:var(--ink);
}
.ts-idx{
  flex:0 0 auto;
  font-size:13px;font-weight:700;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
  width:26px;
}
.acc-title{flex:1 1 auto;font-size:16px;font-weight:600;line-height:1.6;}
.acc-icon{
  flex:0 0 auto;position:relative;
  width:22px;height:22px;
  border-radius:999px;
  border:1px solid var(--line);
  transition:transform 220ms var(--ease),border-color 220ms var(--ease),background 220ms var(--ease);
}
.acc-icon::before,.acc-icon::after{
  content:"";position:absolute;background:var(--accent);border-radius:2px;
  transition:opacity 200ms var(--ease);
}
.acc-icon::before{left:5px;right:5px;top:50%;height:1.5px;transform:translateY(-50%);}
.acc-icon::after{top:5px;bottom:5px;left:50%;width:1.5px;transform:translateX(-50%);}
.acc-item.open .acc-icon{transform:rotate(90deg);border-color:rgba(36,224,200,.6);background:rgba(36,224,200,.1);}
.acc-item.open .acc-icon::after{opacity:0;}

.acc-body{display:grid;grid-template-rows:0fr;transition:grid-template-rows 300ms var(--ease);}
.acc-item.open .acc-body{grid-template-rows:1fr;}
.acc-body-in{overflow:hidden;}
.acc-inner{padding:2px 20px 20px 60px;}
.ts-row{display:flex;gap:12px;padding:9px 0;border-top:1px dashed rgba(255,255,255,.07);}
.ts-row:first-child{border-top:0;}
.ts-key{
  flex:0 0 52px;
  font-size:13px;line-height:1.9;
  color:var(--accent);
  font-weight:600;
}
.ts-val{flex:1 1 auto;font-size:14px;line-height:1.9;color:var(--ink-2);}

/* 粘性侧栏 */
.side-col{position:sticky;top:28px;display:flex;flex-direction:column;gap:16px;}
.sticky-card{padding:22px 20px;}
.sticky-card h3{font-size:16px;font-weight:700;margin-bottom:6px;}
.sticky-card .sc-sub{font-size:13px;color:var(--ink-3);line-height:1.7;margin-bottom:14px;}
.check-list li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14px;line-height:1.75;color:var(--ink-2);
  padding:9px 0;
  border-bottom:1px solid rgba(255,255,255,.055);
}
.check-list li:last-child{border-bottom:0;}
.check-list .box{
  flex:0 0 auto;margin-top:5px;
  width:15px;height:15px;border-radius:5px;
  border:1px solid rgba(36,224,200,.5);
  background:rgba(36,224,200,.08);
  position:relative;
}
.check-list .box::after{
  content:"";position:absolute;left:4px;top:1px;width:5px;height:9px;
  border:solid var(--accent);border-width:0 1.6px 1.6px 0;transform:rotate(40deg);opacity:.85;
}
.sticky-card .btn{margin-top:16px;}

/* ---------- 图文板块 ---------- */
.figure-sec{padding:72px 0 0;}
.figure-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:36px;align-items:center;}
.figure-media{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--sh-card);
}
.figure-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.figure-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.15),rgba(7,11,20,.55));
}
.figure-copy h2{font-size:26px;line-height:1.5;font-weight:700;margin-bottom:14px;letter-spacing:-.01em;}
.figure-copy p{font-size:16px;line-height:1.9;color:var(--ink-2);margin-bottom:14px;max-width:70ch;}
.note-bar{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 16px;
  border-radius:12px;
  background:rgba(36,224,200,.07);
  border:1px solid rgba(36,224,200,.24);
  font-size:14px;line-height:1.8;color:var(--ink-2);
}
.note-bar strong{color:var(--accent);}

/* ---------- FAQ ---------- */
.faq-sec{padding:72px 0 0;}
.faq-inner{max-width:800px;margin:0 auto;}
.faq-head{text-align:center;margin-bottom:22px;}
.faq-head h2{font-size:28px;line-height:1.5;font-weight:700;margin-bottom:10px;}
.faq-head p{font-size:15px;color:var(--ink-3);}
.faq-list .acc-item{margin-bottom:8px;}
.faq-list .acc-head{min-height:56px;}
.faq-list .acc-title{font-size:15px;}
.faq-list .acc-inner{padding:0 20px 18px 20px;font-size:15px;line-height:1.9;color:var(--ink-2);}

/* ---------- CTA 条带 ---------- */
.cta-sec{padding:72px 0 88px;}
.cta-strip{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:30px 32px;
  border-radius:var(--r-card);
  background:linear-gradient(135deg, rgba(255,138,43,.10), rgba(36,224,200,.08));
  border:1px solid var(--line);
  box-shadow:var(--sh-card);
  overflow:hidden;
}
.cta-strip::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,178,77,.85),transparent);
}
.cta-strip h2{font-size:22px;line-height:1.55;font-weight:700;margin-bottom:6px;}
.cta-strip p{font-size:14px;line-height:1.8;color:var(--ink-2);max-width:60ch;}

/* ---------- 页脚 ---------- */
.site-foot{
  margin-left:264px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(12,21,36,.7), rgba(7,11,20,.95));
  padding:56px 0 26px;
  position:relative;
  z-index:1;
}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.foot-name{font-size:16px;font-weight:700;}
.foot-desc{font-size:14px;line-height:1.85;color:var(--ink-3);max-width:36ch;}
.foot-col h4{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:14px;}
.foot-col ul li{margin-bottom:10px;}
.foot-col ul li a,.foot-col ul li span{font-size:13.5px;line-height:1.7;color:var(--ink-3);transition:color 200ms var(--ease);}
.foot-col ul li a:hover{color:var(--accent);}
.foot-bottom{
  margin-top:40px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.06);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.5px;color:var(--ink-3);
}
.foot-bottom .dot{margin:0 6px;}

/* ---------- 响应式 ---------- */
@media (min-width:1024px) and (max-width:1279px){
  .side-nav{width:88px;}
  .brand-text,.si-text,.side-copy{display:none;}
  .side-head{padding:20px 0;display:flex;justify-content:center;}
  .side-menu{padding:16px 12px;}
  .side-item{justify-content:center;padding:0;}
  .side-foot{padding:14px 10px 20px;}
  .side-foot .btn span{display:none;}
  .page-main,.site-foot{margin-left:88px;}
  .side-item{position:relative;}
  .side-item:hover .si-text{
    display:block;position:absolute;left:64px;top:50%;transform:translateY(-50%);
    background:var(--bg-2);border:1px solid var(--line);
    padding:8px 14px;border-radius:10px;white-space:nowrap;z-index:30;
    font-size:13px;color:var(--ink);box-shadow:var(--sh-card);
  }
}

@media (max-width:1023px){
  .side-nav{display:none;}
  .mobile-bar{display:flex;}
  .page-main{margin-left:0;padding-top:64px;}
  .site-foot{margin-left:0;}
  .pg-head{padding:32px 0 30px;min-height:0;}
  .pg-head-grid{grid-template-columns:minmax(0,1fr);gap:24px;}
  .pg-head h1{font-size:30px;}
  .pg-sub{font-size:15px;}
  .figure-grid{grid-template-columns:minmax(0,1fr);gap:24px;}
  .main-grid{grid-template-columns:minmax(0,1fr);gap:24px;}
  .side-col{position:static;}
  .foot-grid{grid-template-columns:1fr 1fr;}
  .foot-desc{max-width:none;}
}

@media (max-width:767px){
  .container,.shell{padding:0 20px;}
  .pg-head h1{font-size:26px;}
  .block-title h2{font-size:19px;}
  .figure-copy h2{font-size:21px;}
  .faq-head h2{font-size:22px;}
  .cta-strip{h2{}}
  .cta-strip{padding:24px 20px;}
  .cta-strip h2{font-size:19px;}
  .acc-head{padding:12px 16px;gap:10px;}
  .acc-title{font-size:15px;}
  .acc-inner{padding:2px 16px 18px 16px;}
  .ts-row{flex-direction:column;gap:2px;}
  .ts-key{flex:none;}
  .main-sec,.figure-sec,.faq-sec{padding-top:52px;}
  .cta-sec{padding:52px 0 64px;}
}

@media (max-width:520px){
  .container,.shell{padding:0 16px;}
  .pg-head h1{font-size:23px;}
  .brand-name{font-size:13px;}
  .foot-grid{grid-template-columns:1fr;gap:26px;}
  .tool-bar{padding:14px 14px;}
  .chips{gap:6px;}
  .chip{height:32px;padding:0 11px;font-size:12px;}
  .btn{height:42px;padding:0 18px;font-size:14px;}
  .cta-strip .btn{width:100%;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category4 */
:root{
    --bg-0:#070B14;
    --bg-1:#0C1524;
    --bg-2:#111C2E;
    --brand:#FF8A2B;
    --brand-2:#FFB24D;
    --accent:#24E0C8;
    --ink:#EAF2FF;
    --ink-2:#A9B8CF;
    --ink-3:#6B7C96;
    --line:rgba(36,224,200,.16);
    --glass:rgba(255,255,255,.06);
    --glass-2:rgba(255,255,255,.09);
    --ok:#3DD68C;
    --warn:#FFC53D;
    --err:#FF5C6C;
    --r-card:16px;
    --r-btn:12px;
    --r-input:10px;
    --shadow-card:0 1px 0 rgba(255,255,255,.04) inset, 0 18px 40px -18px rgba(0,0,0,.65);
    --ease:cubic-bezier(.22,.61,.36,1);
  }

  *,*::before,*::after{box-sizing:border-box;}

  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

  body{
    margin:0;
    background:var(--bg-0);
    color:var(--ink);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.875;
    font-weight:400;
    letter-spacing:0;
    overflow-x:hidden;
  }

  body::before{
    content:"";
    position:fixed;
    inset:0;
    z-index:0;
    pointer-events:none;
    background-image:
      linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
    background-size:72px 72px;
  }

  img{max-width:100%;display:block;border:0;}
  a{color:inherit;text-decoration:none;}
  button,input,select,textarea{font:inherit;color:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;}
  p{margin:0;}

  :focus-visible{
    outline:2px solid rgba(36,224,200,.45);
    outline-offset:2px;
    border-radius:8px;
  }

  .wrap{
    width:100%;
    max-width:1280px;
    margin:0 auto;
    padding:0 32px;
  }

  .num{font-variant-numeric:tabular-nums;}

  /* ============ 品牌标记 ============ */
  .brand-mark{
    width:38px;height:38px;flex:none;
    border-radius:11px;
    display:grid;place-items:center;
    font-size:18px;font-weight:700;
    color:#0A1018;
    background:linear-gradient(135deg,var(--brand),var(--brand-2));
    box-shadow:0 0 18px -4px rgba(255,138,43,.6);
  }

  /* ============ 左侧竖向导航 ============ */
  .side-nav{
    position:fixed;
    top:0;left:0;bottom:0;
    width:264px;
    z-index:70;
    display:flex;
    flex-direction:column;
    padding:22px 18px 20px;
    background:linear-gradient(180deg,rgba(17,28,46,.94),rgba(7,11,20,.97));
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    border-right:1px solid var(--line);
    transition:width 220ms var(--ease), box-shadow 220ms var(--ease), padding 220ms var(--ease);
    overflow-y:auto;
    overflow-x:hidden;
  }
  .side-nav::-webkit-scrollbar{width:6px;}
  .side-nav::-webkit-scrollbar-thumb{background:rgba(36,224,200,.22);border-radius:99px;}

  .side-brand{
    display:flex;align-items:center;gap:12px;
    padding:4px 6px 18px;
    border-bottom:1px solid var(--line);
  }
  .brand-text{display:flex;flex-direction:column;min-width:0;}
  .brand-name{
    font-size:15px;font-weight:700;line-height:22px;
    color:var(--ink);white-space:nowrap;
  }
  .brand-sub{
    font-size:12px;line-height:18px;color:var(--ink-3);
    white-space:nowrap;
  }

  .side-nav-label{
    margin:20px 8px 10px;
    font-size:12px;line-height:18px;
    color:var(--ink-3);
    letter-spacing:.04em;
  }

  .nav-list{display:flex;flex-direction:column;gap:4px;}
  .nav-item{
    position:relative;
    display:flex;align-items:center;gap:12px;
    height:44px;
    padding:0 12px;
    border-radius:10px;
    font-size:14px;
    color:var(--ink-2);
    transition:background 220ms var(--ease), color 220ms var(--ease);
  }
  .nav-item:hover{background:rgba(255,255,255,.05);color:var(--ink);}
  .nav-item.active{background:rgba(255,138,43,.10);color:var(--ink);}
  .nav-item.active::before{
    content:"";
    position:absolute;left:0;top:9px;bottom:9px;
    width:3px;border-radius:3px;
    background:var(--brand);
    box-shadow:0 0 12px rgba(255,138,43,.9);
  }
  .nav-ico{width:19px;height:19px;flex:none;opacity:.92;}

  .side-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);}
  .side-cta{width:100%;height:44px;}
  .side-foot-text{
    margin-top:12px;
    font-size:12px;line-height:18px;color:var(--ink-3);
  }

  /* ============ 顶部移动导航 ============ */
  .mobile-bar{
    display:none;
    position:fixed;top:0;left:0;right:0;
    height:64px;z-index:80;
    align-items:center;justify-content:space-between;
    padding:0 16px;
    background:rgba(7,11,20,.9);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    border-bottom:1px solid var(--line);
  }
  .mobile-bar .brand{display:flex;align-items:center;gap:10px;min-width:0;}
  .mobile-bar .brand-name{font-size:14px;overflow:hidden;text-overflow:ellipsis;}
  .burger{
    width:44px;height:44px;flex:none;
    display:grid;place-items:center;
    background:var(--glass);
    border:1px solid var(--line);
    border-radius:12px;
    cursor:pointer;
    transition:border-color 200ms var(--ease), background 200ms var(--ease);
  }
  .burger:hover{border-color:rgba(36,224,200,.45);background:rgba(36,224,200,.08);}
  .burger svg{width:22px;height:22px;}

  .drawer{
    position:fixed;inset:0;z-index:90;
    display:flex;flex-direction:column;
    padding:16px;
    background:rgba(7,11,20,.98);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    transform:translateY(-100%);
    transition:transform 240ms var(--ease);
    overflow-y:auto;
    visibility:hidden;
  }
  .drawer.open{transform:translateY(0);visibility:visible;}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);}
  .drawer-close{
    width:44px;height:44px;display:grid;place-items:center;
    background:var(--glass);border:1px solid var(--line);border-radius:12px;cursor:pointer;
  }
  .drawer-close svg{width:20px;height:20px;}
  .drawer .nav-list{margin-top:18px;}
  .drawer .nav-item{height:48px;font-size:15px;}
  .drawer-cta{margin-top:24px;}

  /* ============ 主区域 ============ */
  .main{position:relative;z-index:1;}

  .sec{padding:72px 0;}
  .sec-tight{padding:56px 0;}

  .sec-head{
    display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
    margin-bottom:30px;
  }
  h2{font-size:28px;line-height:38px;}
  .sec-sub{margin-top:10px;font-size:15px;line-height:26px;color:var(--ink-2);max-width:72ch;}
  .sec-kicker{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;line-height:18px;letter-spacing:.04em;
    color:var(--accent);margin-bottom:10px;
  }
  .sec-kicker::before{content:"";width:18px;height:1px;background:var(--accent);display:block;}

  /* ============ 页头 ============ */
  .page-head{
    position:relative;
    padding:56px 0 44px;
    border-bottom:1px solid var(--line);
    background-image:
      linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px);
    background-size:56px 56px;
  }
  .crumb{
    display:flex;align-items:center;gap:8px;flex-wrap:wrap;
    font-size:14px;line-height:24px;color:var(--ink-3);
    margin-bottom:18px;
  }
  .crumb a{transition:color 200ms var(--ease);}
  .crumb a:hover{color:var(--accent);}
  .crumb .sep{color:rgba(107,124,150,.6);}
  .crumb .now{color:var(--ink-2);}

  .head-grid{
    display:grid;
    grid-template-columns:minmax(0,1fr) 320px;
    gap:40px;
    align-items:end;
  }
  h1{
    font-size:40px;line-height:52px;
    letter-spacing:-.01em;
    max-width:22ch;
  }
  .head-lead{
    margin-top:16px;
    font-size:16px;line-height:30px;
    color:var(--ink-2);
    max-width:72ch;
  }
  .head-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px;}

  .info-card{
    background:var(--glass);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--shadow-card);
    padding:22px;
  }
  .info-card h3{font-size:14px;line-height:22px;color:var(--ink-2);font-weight:600;}
  .info-row{
    display:flex;align-items:baseline;justify-content:space-between;gap:14px;
    padding:12px 0;
    border-bottom:1px dashed rgba(255,255,255,.08);
    font-size:14px;line-height:22px;
  }
  .info-row:last-child{border-bottom:0;padding-bottom:0;}
  .info-row .k{color:var(--ink-3);}
  .info-row .v{color:var(--ink);font-weight:600;text-align:right;}

  /* ============ 通用卡片 / 按钮 / 徽章 ============ */
  .card{
    background:var(--glass);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--shadow-card);
    transition:border-color 220ms var(--ease), transform 220ms var(--ease), box-shadow 220ms var(--ease);
  }
  .card:hover{
    border-color:rgba(36,224,200,.4);
    transform:translateY(-3px);
    box-shadow:0 0 0 1px rgba(36,224,200,.25), 0 20px 44px -20px rgba(36,224,200,.35);
  }

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 20px;
    border-radius:var(--r-btn);
    font-size:15px;font-weight:600;
    border:1px solid transparent;
    cursor:pointer;
    white-space:nowrap;
    transition:all 220ms var(--ease);
  }
  .btn-primary{
    background:linear-gradient(135deg,var(--brand),var(--brand-2));
    color:#0A1018;
    box-shadow:0 0 24px -4px rgba(255,138,43,.55);
  }
  .btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 34px -2px rgba(255,138,43,.72);}
  .btn-primary:active{transform:scale(.98);}
  .btn-ghost{
    background:transparent;
    border-color:var(--line);
    color:var(--ink);
  }
  .btn-ghost:hover{border-color:var(--accent);background:rgba(36,224,200,.08);}
  .btn-ghost:active{transform:scale(.98);}
  .btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
  .btn-link{
    display:inline-flex;align-items:center;gap:6px;
    font-size:14px;font-weight:600;color:var(--accent);
    transition:gap 220ms var(--ease);
  }
  .btn-link:hover{gap:14px;}
  .btn-link svg{width:16px;height:16px;}

  .badge{
    display:inline-flex;align-items:center;gap:6px;
    font-size:12px;line-height:18px;
    padding:4px 10px;
    border-radius:999px;
    background:var(--glass);
    border:1px solid var(--line);
    color:var(--accent);
  }
  .badge::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor;}
  .badge-mute{color:var(--ink-2);}
  .badge-brand{color:var(--brand-2);}

  /* ============ 设备面板三列 ============ */
  .device-grid{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:20px;
  }
  .device-panel{
    display:flex;flex-direction:column;
    padding:24px;
  }
  .device-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:6px;}
  .device-ico{
    width:42px;height:42px;flex:none;
    display:grid;place-items:center;
    border-radius:12px;
    background:rgba(36,224,200,.10);
    border:1px solid var(--line);
    color:var(--accent);
  }
  .device-ico svg{width:22px;height:22px;}
  .device-name{font-size:20px;line-height:30px;margin-top:16px;}
  .device-note{margin-top:6px;font-size:14px;line-height:24px;color:var(--ink-2);}
  .spec-list{margin:18px 0 22px;}
  .spec-row{
    display:flex;justify-content:space-between;gap:14px;
    padding:10px 0;
    font-size:14px;line-height:22px;
    border-bottom:1px dashed rgba(255,255,255,.08);
  }
  .spec-row:last-child{border-bottom:0;}
  .spec-row .k{color:var(--ink-3);flex:none;}
  .spec-row .v{color:var(--ink);text-align:right;}
  .device-panel .btn{margin-top:auto;}

  /* ============ 配图叙事条 ============ */
  .figure-band{
    position:relative;
    border-radius:var(--r-card);
    border:1px solid var(--line);
    overflow:hidden;
    min-height:360px;
    background-image:url('/assets/images/backpic/back-2.webp');
    background-size:cover;
    background-position:center;
    box-shadow:var(--shadow-card);
  }
  .figure-band::before{
    content:"";
    position:absolute;inset:0;
    background-image:
      linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
    background-size:48px 48px;
    opacity:.5;
  }
  .figure-band::after{
    content:"";
    position:absolute;inset:0;
    background:linear-gradient(90deg, rgba(7,11,20,.95) 0%, rgba(7,11,20,.76) 48%, rgba(7,11,20,.32) 100%);
  }
  .figure-inner{
    position:relative;z-index:2;
    padding:42px 40px;
    max-width:620px;
  }
  .figure-inner h2{font-size:26px;line-height:36px;}
  .figure-inner p{margin-top:12px;font-size:15px;line-height:28px;color:var(--ink-2);}
  .figure-points{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
  .figure-points li{
    display:flex;align-items:flex-start;gap:10px;
    font-size:14px;line-height:24px;color:var(--ink);
  }
  .figure-points li::before{
    content:"";
    width:8px;height:8px;flex:none;margin-top:8px;
    border-radius:2px;
    background:var(--accent);
    box-shadow:0 0 10px rgba(36,224,200,.7);
  }

  /* ============ 参数对照表 ============ */
  .table-shell{
    border:1px solid var(--line);
    border-radius:var(--r-card);
    overflow:hidden;
    background:var(--glass);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    box-shadow:var(--shadow-card);
  }
  .table-scroll{overflow-x:auto;}
  table.spec-table{
    width:100%;
    min-width:760px;
    border-collapse:collapse;
    font-size:14px;
    line-height:22px;
  }
  .spec-table th{
    text-align:left;
    padding:14px 18px;
    font-weight:600;
    color:var(--ink);
    background:var(--bg-2);
    border-bottom:1px solid var(--line);
    white-space:nowrap;
  }
  .spec-table td{
    padding:14px 18px;
    color:var(--ink-2);
    border-bottom:1px solid rgba(255,255,255,.06);
  }
  .spec-table td:first-child{color:var(--ink);font-weight:600;white-space:nowrap;}
  .spec-table tbody tr:nth-child(even){background:rgba(255,255,255,.03);}
  .spec-table tbody tr:last-child td{border-bottom:0;}
  .spec-table tbody tr:hover{background:rgba(36,224,200,.06);}

  /* ============ 编号说明区 ============ */
  .num-grid{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:34px 48px;
  }
  .num-item{display:flex;gap:18px;}
  .num-badge{
    width:46px;height:46px;flex:none;
    display:grid;place-items:center;
    border-radius:999px;
    border:1px solid var(--line);
    background:var(--glass);
    color:var(--accent);
    font-size:15px;font-weight:700;
    box-shadow:0 0 0 6px rgba(36,224,200,.05);
  }
  .num-item h3{font-size:18px;line-height:28px;}
  .num-item p{margin-top:8px;font-size:15px;line-height:28px;color:var(--ink-2);}

  /* ============ CTA 条带 ============ */
  .cta-band{
    position:relative;
    display:flex;align-items:center;justify-content:space-between;gap:28px;
    padding:36px 40px;
    border-radius:var(--r-card);
    border:1px solid var(--line);
    background:var(--glass);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    box-shadow:var(--shadow-card);
    overflow:hidden;
  }
  .cta-band::before{
    content:"";
    position:absolute;left:0;right:0;top:0;height:1px;
    background:linear-gradient(90deg,transparent,var(--accent),transparent);
    opacity:.85;
  }
  .cta-band h2{font-size:24px;line-height:34px;}
  .cta-band p{margin-top:8px;font-size:15px;line-height:26px;color:var(--ink-2);}
  .cta-actions{display:flex;gap:12px;flex:none;}

  /* ============ 页脚 ============ */
  .site-foot{
    position:relative;z-index:1;
    margin-top:88px;
    padding:56px 0 28px;
    border-top:1px solid var(--line);
    background:rgba(12,21,36,.62);
  }
  .foot-grid{
    display:grid;
    grid-template-columns:1.6fr 1fr 1fr 1fr;
    gap:32px;
  }
  .foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
  .foot-name{font-size:15px;font-weight:700;line-height:24px;}
  .foot-desc{font-size:14px;line-height:26px;color:var(--ink-2);max-width:34ch;}
  .foot-col h4{font-size:14px;line-height:22px;font-weight:600;color:var(--ink);margin-bottom:14px;}
  .foot-col li{font-size:14px;line-height:24px;color:var(--ink-2);margin-bottom:10px;}
  .foot-col a{transition:color 200ms var(--ease);}
  .foot-col a:hover{color:var(--accent);}
  .foot-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    margin-top:38px;padding-top:20px;
    border-top:1px solid var(--line);
    font-size:13px;line-height:22px;color:var(--ink-3);
  }
  .foot-bottom .dot{margin:0 8px;}

  /* ============ 断点 ============ */
  @media (min-width:1024px){
    body{padding-left:264px;}
    .mobile-bar{display:none;}
  }

  @media (min-width:1024px) and (max-width:1279px){
    body{padding-left:88px;}
    .side-nav{width:88px;padding:20px 14px;}
    .side-nav .brand-text,
    .side-nav .side-nav-label,
    .side-nav .nav-label,
    .side-nav .side-foot-text{display:none;}
    .side-nav .side-brand{justify-content:center;padding-left:0;padding-right:0;}
    .side-nav .nav-item{justify-content:center;padding:0;gap:0;}
    .side-nav .side-cta{width:52px;padding:0;}
    .side-nav .side-cta span{display:none;}
    .side-nav:hover,
    .side-nav:focus-within{
      width:264px;
      padding:22px 18px;
      box-shadow:26px 0 60px -34px rgba(0,0,0,.95);
    }
    .side-nav:hover .brand-text,
    .side-nav:focus-within .brand-text,
    .side-nav:hover .side-nav-label,
    .side-nav:focus-within .side-nav-label,
    .side-nav:hover .nav-label,
    .side-nav:focus-within .nav-label,
    .side-nav:hover .side-foot-text,
    .side-nav:focus-within .side-foot-text{display:inline-flex;}
    .side-nav:hover .side-brand,
    .side-nav:focus-within .side-brand{justify-content:flex-start;padding-left:6px;padding-right:6px;}
    .side-nav:hover .nav-item,
    .side-nav:focus-within .nav-item{justify-content:flex-start;padding:0 12px;gap:12px;}
    .side-nav:hover .side-cta,
    .side-nav:focus-within .side-cta{width:100%;padding:0 20px;}
    .side-nav:hover .side-cta span,
    .side-nav:focus-within .side-cta span{display:inline;}
    .side-nav .side-foot-text{display:none;}
    .side-nav:hover .side-foot-text,
    .side-nav:focus-within .side-foot-text{display:block;}
  }

  @media (max-width:1023px){
    .side-nav{display:none;}
    .mobile-bar{display:flex;}
    body{padding-top:64px;}
    .sec{padding:56px 0;}
    .sec-tight{padding:44px 0;}
    .head-grid{grid-template-columns:minmax(0,1fr);gap:28px;align-items:start;}
    h1{font-size:34px;line-height:44px;max-width:none;}
    h2{font-size:24px;line-height:34px;}
    .device-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .num-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
    .cta-band{flex-direction:column;align-items:flex-start;padding:30px 26px;}
    .cta-actions{width:100%;flex-wrap:wrap;}
    .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
    .figure-inner{padding:34px 26px;max-width:none;}
  }

  @media (max-width:767px){
    .wrap{padding:0 16px;}
    .page-head{padding:36px 0 32px;}
    h1{font-size:30px;line-height:40px;}
    .head-lead{font-size:15px;line-height:28px;}
    .device-grid{grid-template-columns:minmax(0,1fr);}
    .figure-band{min-height:0;}
    .figure-inner{padding:28px 20px;}
    .figure-inner h2{font-size:22px;line-height:32px;}
    .sec{padding:48px 0;}
    .cta-band h2{font-size:21px;line-height:31px;}
    .btn{width:100%;}
    .cta-actions .btn{width:100%;}
    .btn-link{width:auto;}
    .foot-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
    .site-foot{padding:44px 0 24px;margin-top:64px;}
  }

  @media (max-width:520px){
    .foot-grid{grid-template-columns:minmax(0,1fr);}
    .device-panel{padding:20px;}
    .info-card{padding:18px;}
  }

  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;}
    html{scroll-behavior:auto;}
  }