/* roulang page: index */
:root{
  --c-bg:#070B16;
  --c-bg-2:#0A1224;
  --c-panel:#0E1830;
  --c-line:rgba(120,160,255,.16);
  --c-brand:#2F6BFF;
  --c-brand-2:#7FA8FF;
  --c-cyan:#1FE0C4;
  --c-hot:#FF7A3C;
  --c-text:#E8EEFF;
  --c-text-2:#A6B4D2;
  --c-muted:#6B7997;
  --r-card:18px;
  --r-img:14px;
  --r-btn:12px;
  --shadow-card:0 18px 40px -18px rgba(0,0,0,.85), inset 0 1px 0 rgba(255,255,255,.06);
  --glass-bg:linear-gradient(160deg, rgba(20,34,64,.72), rgba(10,18,34,.55));
  --ease:cubic-bezier(.2,.7,.2,1);
  --t:200ms var(--ease);
  --bs-body-bg:#070B16;
  --bs-body-color:#E8EEFF;
  --bs-primary:#2F6BFF;
  --bs-link-color:#7FA8FF;
  --bs-link-hover-color:#9FC0FF;
  --bs-border-color:rgba(120,160,255,.16);
  --bs-border-radius:12px;
  --bs-card-bg:#0E1830;
  --bs-card-color:#E8EEFF;
  --bs-card-border-color:rgba(120,160,255,.16);
  --bs-card-border-radius:18px;
  --bs-accordion-bg:transparent;
  --bs-accordion-color:#E8EEFF;
  --bs-accordion-border-color:rgba(120,160,255,.16);
  --bs-accordion-btn-color:#E8EEFF;
  --bs-accordion-btn-bg:transparent;
  --bs-accordion-active-bg:transparent;
  --bs-accordion-active-color:#7FA8FF;
  --bs-form-control-bg:rgba(255,255,255,.03);
  --bs-form-control-color:#E8EEFF;
  --bs-form-control-border-color:rgba(120,160,255,.16);
  --bs-table-bg:transparent;
  --bs-table-color:#E8EEFF;
  --bs-table-border-color:rgba(120,160,255,.12);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:15px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-brand-2);text-decoration:none;transition:color var(--t)}
a:hover{color:#9FC0FF}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;color:var(--c-text)}
p{margin:0 0 16px}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--c-cyan);outline-offset:2px;border-radius:4px}
.mono{font-family:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:1400px){.container{max-width:1280px}}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(7,11,22,.86);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--c-line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:66px}
.logo{display:flex;flex-direction:column;gap:1px;line-height:1.15;flex-shrink:0}
.logo-main{font-size:19px;font-weight:800;letter-spacing:.4px;color:var(--c-text);transition:color var(--t)}
.logo-sub{font-size:11px;letter-spacing:1.6px;color:var(--c-muted);transition:color var(--t)}
.logo:hover .logo-main{color:var(--c-brand-2)}
.logo:hover .logo-sub{color:var(--c-text-2)}
.nav-menu{display:flex;align-items:center;gap:26px;margin:0;padding:0;list-style:none}
.nav-menu a{position:relative;display:inline-block;font-size:15px;color:var(--c-text-2);padding:6px 0;transition:color var(--t)}
.nav-menu a::after{content:"";position:absolute;left:50%;right:50%;bottom:-2px;height:2px;background:var(--c-brand-2);border-radius:2px;transition:left var(--t),right var(--t)}
.nav-menu a:hover,.nav-menu a:focus-visible{color:var(--c-brand-2)}
.nav-menu a:hover::after,.nav-menu a:focus-visible::after,.nav-menu a.active::after{left:0;right:0}
.nav-menu a.active{color:var(--c-brand-2)}
.header-cta{display:inline-flex;align-items:center;justify-content:center;padding:9px 18px;font-size:14px;font-weight:600;border-radius:10px;color:#fff;background:linear-gradient(135deg,#2F6BFF,#4E86FF);box-shadow:0 8px 20px -10px rgba(47,107,255,.9),inset 0 1px 0 rgba(255,255,255,.18);transition:transform var(--t),box-shadow var(--t),filter var(--t)}
.header-cta:hover{color:#fff;transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 12px 26px -10px rgba(47,107,255,1),inset 0 1px 0 rgba(255,255,255,.22)}
.header-cta:active{transform:translateY(0);filter:brightness(.94)}
@media(max-width:991px){
  .nav-menu{display:none}
  .header-inner{height:62px}
  .logo-main{font-size:17px}
  .logo-sub{font-size:10px;letter-spacing:1.2px}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;font-size:15px;font-weight:600;line-height:1.2;
  border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;
  transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t),filter var(--t);
}
.btn:disabled,.btn.disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}
.btn-primary{
  background:linear-gradient(135deg,#2F6BFF,#4E86FF);color:#fff;
  box-shadow:0 8px 24px -8px rgba(47,107,255,.65),inset 0 1px 0 rgba(255,255,255,.18);
}
.btn-primary:hover{color:#fff;background:linear-gradient(135deg,#3E78FF,#5D92FF);transform:translateY(-1px);box-shadow:0 12px 30px -8px rgba(47,107,255,.85),inset 0 1px 0 rgba(255,255,255,.22)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-outline{background:transparent;color:var(--c-text);border-color:rgba(127,168,255,.45)}
.btn-outline:hover{background:rgba(47,107,255,.10);border-color:var(--c-brand-2);color:#fff}
.btn-outline:active{background:rgba(47,107,255,.18)}
.btn-hot{background:linear-gradient(135deg,#FF7A3C,#FF9459);color:#141008;box-shadow:0 8px 24px -10px rgba(255,122,60,.75),inset 0 1px 0 rgba(255,255,255,.28)}
.btn-hot:hover{color:#141008;filter:brightness(1.06);transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:10px}

/* ============ 通用区块 ============ */
.section{padding:92px 0;position:relative}
.section-alt{background:var(--c-bg-2);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.sec-head{max-width:740px;margin-bottom:44px}
.sec-eyebrow{display:inline-block;font-size:12px;letter-spacing:1.6px;color:var(--c-cyan);font-weight:600;margin-bottom:12px}
.sec-title{font-size:clamp(24px,3.2vw,38px);font-weight:700;line-height:1.25}
.sec-desc{margin:14px 0 0;color:var(--c-text-2);font-size:15px;line-height:1.85}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.text-link{font-size:14px;font-weight:600;color:var(--c-brand-2);display:inline-flex;align-items:center;gap:6px}
.text-link:hover{gap:10px}
.glass{
  background:var(--glass-bg);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
}
.panel{background:var(--c-panel);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--shadow-card)}
.badge-cat{
  display:inline-block;font-size:11px;font-weight:600;letter-spacing:.5px;
  padding:3px 10px;color:var(--c-brand-2);
  background:rgba(47,107,255,.08);border:1px solid rgba(47,107,255,.4);
  border-radius:6px;clip-path:polygon(6px 0,100% 0,100% calc(100% - 6px),calc(100% - 6px) 100%,0 100%,0 6px);
}
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ============ Hero ============ */
.hero{position:relative;min-height:82vh;display:flex;align-items:center;overflow:hidden;background:#070B16}
.hero-bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:right center;background-repeat:no-repeat;
  opacity:.92;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:1;
  background-image:linear-gradient(rgba(120,160,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(120,160,255,.055) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:linear-gradient(90deg,#000 0%,rgba(0,0,0,.35) 60%,transparent 90%);
  mask-image:linear-gradient(90deg,#000 0%,rgba(0,0,0,.35) 60%,transparent 90%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(90deg,#070B16 8%,rgba(7,11,22,.72) 52%,rgba(7,11,22,.32) 100%);
}
.hero .container{position:relative;z-index:2;padding-top:118px;padding-bottom:104px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:1.4px;
  color:var(--c-cyan);font-weight:600;margin-bottom:18px;
}
.hero-eyebrow::before{content:"";width:22px;height:1px;background:var(--c-cyan);display:inline-block}
.hero h1{
  font-size:clamp(22px,4.5vw,52px);font-weight:800;line-height:1.18;letter-spacing:-.3px;
  margin:0 0 20px;max-width:100%;
}
.hero h1 .kw{white-space:nowrap}
.hero-sub{font-size:clamp(14px,1.5vw,16px);line-height:1.8;color:var(--c-text-2);max-width:520px;margin:0 0 30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-status{
  display:inline-flex;align-items:center;gap:12px;flex-wrap:wrap;
  font-size:12px;letter-spacing:.6px;color:var(--c-muted);
  padding-top:14px;border-top:1px solid var(--c-line);
}
.hero-status b{color:var(--c-text-2);font-weight:600}
.hero-panel{padding:24px 22px;display:flex;flex-direction:column;gap:14px}
.panel-title{font-size:12px;letter-spacing:1.6px;color:var(--c-muted);margin:0 0 2px}
.stat-block{display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:14px;background:rgba(255,255,255,.03);border:1px solid rgba(120,160,255,.10);transition:border-color var(--t),background var(--t)}
.stat-block:hover{border-color:rgba(31,224,196,.35);background:rgba(31,224,196,.04)}
.stat-icon{flex:0 0 38px;width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;background:rgba(31,224,196,.10);border:1px solid rgba(31,224,196,.28)}
.stat-icon svg{width:18px;height:18px;stroke:var(--c-cyan);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.stat-num{font-size:24px;font-weight:700;line-height:1.1;color:var(--c-cyan);letter-spacing:.5px}
.stat-label{font-size:12px;color:var(--c-text-2);line-height:1.5;margin-top:2px}
.hero-pulse{position:absolute;left:0;right:0;bottom:0;height:1px;z-index:3;background:linear-gradient(90deg,transparent,rgba(47,107,255,.75),rgba(31,224,196,.75),transparent);overflow:hidden}
.hero-pulse::after{content:"";position:absolute;top:0;left:-30%;width:30%;height:1px;background:linear-gradient(90deg,transparent,#fff,transparent);animation:pulseScan 6.5s linear infinite}
@keyframes pulseScan{0%{left:-30%}100%{left:100%}}

/* ============ 流程时间线 ============ */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;margin-top:8px}
.flow-grid::before{content:"";position:absolute;top:6px;left:4%;right:4%;height:2px;border-radius:2px;background:linear-gradient(90deg,rgba(47,107,255,.7),rgba(31,224,196,.7));opacity:.55}
.flow-step{position:relative;padding-top:44px}
.flow-step::before{content:"";position:absolute;top:0;left:0;width:12px;height:12px;border-radius:50%;background:var(--c-cyan);box-shadow:0 0 0 6px rgba(31,224,196,.14),0 0 16px rgba(31,224,196,.65)}
.flow-num{font-size:30px;font-weight:700;line-height:1;color:rgba(127,168,255,.35);letter-spacing:1px;margin-bottom:12px}
.flow-step h3{font-size:18px;margin-bottom:8px}
.flow-step p{font-size:14px;line-height:1.8;color:var(--c-text-2);margin:0}

/* ============ 亮点区 ============ */
.spotlight{display:grid;grid-template-columns:1.35fr .65fr;gap:24px;align-items:stretch}
.spot-main{overflow:hidden;display:flex;flex-direction:column}
.spot-img{position:relative;aspect-ratio:16/9;overflow:hidden;border-radius:var(--r-card) var(--r-card) 0 0}
.spot-img img{width:100%;height:100%;object-fit:cover;transition:transform 600ms var(--ease)}
.spot-main:hover .spot-img img{transform:scale(1.03)}
.spot-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,11,22,0) 40%,rgba(7,11,22,.75) 100%)}
.spot-body{padding:26px 26px 28px}
.spot-body h3{font-size:21px;margin-bottom:10px}
.spot-body p{font-size:14px;color:var(--c-text-2);margin:0 0 18px}
.spot-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.spot-point{padding:12px 14px;border-radius:12px;background:rgba(255,255,255,.03);border:1px solid rgba(120,160,255,.12)}
.spot-point span{display:block;font-size:11px;letter-spacing:.6px;color:var(--c-cyan);margin-bottom:4px}
.spot-point p{font-size:13px;color:var(--c-text-2);margin:0;line-height:1.7}
.spot-side{display:flex;flex-direction:column;gap:24px}
.spot-mini{padding:24px;flex:1;display:flex;flex-direction:column;justify-content:center;transition:border-color var(--t),transform var(--t)}
.spot-mini:hover{border-color:rgba(127,168,255,.4);transform:translateY(-2px)}
.spot-mini .mini-icon{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:rgba(47,107,255,.12);border:1px solid rgba(47,107,255,.32);margin-bottom:14px}
.spot-mini .mini-icon svg{width:17px;height:17px;stroke:var(--c-brand-2);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.spot-mini h3{font-size:17px;margin-bottom:8px}
.spot-mini p{font-size:13px;color:var(--c-text-2);margin:0;line-height:1.75}

/* ============ 方案对比 ============ */
.table-outer{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);background:var(--c-panel);box-shadow:var(--shadow-card)}
.table-outer::after{content:"";position:absolute;top:0;right:0;bottom:0;width:40px;pointer-events:none;background:linear-gradient(90deg,transparent,rgba(7,11,22,.92));opacity:0;transition:opacity var(--t)}
.plan-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.plan-table{width:100%;min-width:760px;border-collapse:separate;border-spacing:0;font-size:15px;color:var(--c-text)}
.plan-table th,.plan-table td{padding:0 20px;height:56px;text-align:left;vertical-align:middle;border-bottom:1px solid rgba(120,160,255,.12)}
.plan-table thead th{height:auto;padding-top:22px;padding-bottom:22px;background:var(--glass-bg);font-size:15px;font-weight:700;position:relative}
.plan-table thead th:first-child{font-size:13px;letter-spacing:.6px;color:var(--c-muted);font-weight:600}
.plan-table tbody tr{transition:background var(--t)}
.plan-table tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.plan-table tbody tr:hover{background:rgba(255,255,255,.03)}
.plan-table td:first-child{color:var(--c-text-2);font-size:14px;position:sticky;left:0;background:var(--c-panel);z-index:2}
.plan-table tbody tr:nth-child(even) td:first-child{background:#101A32}
.plan-table .col-hl{background:rgba(47,107,255,.10)}
.plan-table td.col-hl{color:var(--c-text)}
.plan-table thead th.col-hl::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--c-brand),var(--c-cyan))}
.plan-tag{display:inline-block;margin-left:8px;font-size:11px;font-weight:700;letter-spacing:.5px;padding:2px 8px;color:#08101F;background:linear-gradient(135deg,var(--c-cyan),#5EE9D2);border-radius:6px;clip-path:polygon(6px 0,100% 0,100% 100%,0 100%,0 6px)}
.plan-table tfoot td{padding:18px 20px;border-bottom:0;background:rgba(7,11,22,.4)}
.plan-table tfoot td.col-hl{background:rgba(47,107,255,.12)}
.tick{color:var(--c-cyan);font-weight:700}
.cross{color:var(--c-muted)}
.plan-table .btn{width:100%;padding:10px 12px;font-size:14px}

/* ============ 最新信息 ============ */
.news-grid{display:grid;grid-template-columns:1.15fr .85fr;grid-template-rows:repeat(3,minmax(0,auto));gap:20px}
.news-card{background:var(--c-panel);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;transition:border-color var(--t),transform var(--t),box-shadow var(--t);box-shadow:var(--shadow-card)}
.news-card:hover{border-color:rgba(127,168,255,.45);transform:translateY(-2px)}
.news-link{display:flex;flex-direction:column;height:100%;color:inherit}
.news-link:hover{color:inherit}
.news-card.is-lead{grid-row:span 3}
.news-thumb{aspect-ratio:200/132;overflow:hidden;border-radius:0}
.news-card.is-lead .news-thumb{aspect-ratio:16/9}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 600ms var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.news-card.is-lead .news-body{padding:24px 26px 26px}
.news-title{font-size:16px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color var(--t)}
.news-card.is-lead .news-title{font-size:21px;-webkit-line-clamp:3}
.news-card:hover .news-title{color:var(--c-brand-2)}
.news-excerpt{font-size:13px;line-height:1.75;color:var(--c-text-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card.is-lead .news-excerpt{font-size:14px;-webkit-line-clamp:3}
.news-meta{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:10px;font-size:12px;color:var(--c-muted);letter-spacing:.4px}
.news-arrow{color:var(--c-brand-2);transition:transform var(--t)}
.news-card:hover .news-arrow{transform:translateX(4px)}
.news-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;min-height:220px;padding:40px 22px;text-align:center}
.news-empty-icon{font-size:26px;color:var(--c-muted)}
.news-empty p{color:var(--c-text-2);font-size:14px;margin:0}

/* ============ 表单 ============ */
.signup{padding:34px 34px 36px}
.signup-side h3{font-size:22px;margin-bottom:14px}
.signup-side p{font-size:14px;color:var(--c-text-2);margin-bottom:22px}
.signup-list li{display:flex;gap:12px;font-size:14px;color:var(--c-text-2);line-height:1.75;margin-bottom:14px}
.signup-list li::before{content:"";flex:0 0 6px;width:6px;height:6px;margin-top:9px;border-radius:50%;background:var(--c-cyan);box-shadow:0 0 10px rgba(31,224,196,.7)}
.form-label{font-size:13px;color:var(--c-text-2);margin-bottom:6px;font-weight:600;display:block}
.form-label .req{color:var(--c-hot);margin-left:2px}
.form-control,.form-select{
  width:100%;background:rgba(255,255,255,.03);border:1px solid var(--c-line);
  border-radius:var(--r-btn);color:var(--c-text);padding:11px 14px;font-size:14px;
  transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.form-control::placeholder{color:var(--c-muted)}
.form-control:focus,.form-select:focus{
  outline:none;border-color:var(--c-brand);background:rgba(47,107,255,.06);
  box-shadow:0 0 0 3px rgba(47,107,255,.22);
}
.form-select option{background:#0E1830;color:var(--c-text)}
.form-control.is-invalid,.form-select.is-invalid{border-color:var(--c-hot);box-shadow:0 0 0 3px rgba(255,122,60,.16)}
.err-msg{display:none;font-size:13px;color:var(--c-hot);margin-top:6px}
.form-check{display:flex;align-items:flex-start;gap:10px;padding:0;margin:0}
.form-check-input{flex:0 0 16px;width:16px;height:16px;margin-top:4px;background:rgba(255,255,255,.04);border:1px solid var(--c-line);border-radius:4px;appearance:none;cursor:pointer;transition:background var(--t),border-color var(--t)}
.form-check-input:checked{background:var(--c-brand);border-color:var(--c-brand);background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3e%3cpath fill='none' stroke='%23fff' stroke-linecap='round' stroke-linejoin='round' stroke-width='3' d='m6 10 3 3 6-6'/%3e%3c/svg%3e");background-size:12px;background-position:center;background-repeat:no-repeat}
.form-check-input.is-invalid{border-color:var(--c-hot)}
.form-check-label{font-size:13px;color:var(--c-text-2);line-height:1.7;cursor:pointer}
.form-alert{display:none;align-items:flex-start;gap:10px;padding:14px 16px;margin-bottom:18px;border-radius:12px;background:rgba(31,224,196,.07);border:1px solid rgba(31,224,196,.28);border-left:3px solid var(--c-cyan);font-size:14px;color:var(--c-text)}
.form-alert.show{display:flex}
.form-alert.is-error{background:rgba(255,122,60,.07);border-color:rgba(255,122,60,.3);border-left-color:var(--c-hot)}

/* ============ FAQ ============ */
.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-width:0}
.faq-col .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--c-line)}
.faq-col .accordion-item:first-child{border-top:1px solid var(--c-line)}
.accordion-button{
  background:transparent;color:var(--c-text);font-size:16px;font-weight:700;
  padding:20px 40px 20px 16px;box-shadow:none;border-radius:0;line-height:1.55;
  transition:color var(--t),box-shadow var(--t);
}
.accordion-button:hover{color:var(--c-brand-2)}
.accordion-button:not(.collapsed){color:var(--c-brand-2);background:transparent;box-shadow:inset 2px 0 0 var(--c-cyan)}
.accordion-button:focus{box-shadow:inset 2px 0 0 var(--c-cyan);outline:none}
.accordion-button::after{
  content:"+";background-image:none;width:auto;height:auto;flex:0 0 auto;
  font-size:20px;font-weight:400;line-height:1;color:var(--c-brand-2);
  display:flex;align-items:center;justify-content:center;transition:transform var(--t);
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.accordion-body{padding:0 16px 22px;font-size:15px;line-height:1.85;color:var(--c-text-2);max-width:72ch}

/* ============ CTA 条 ============ */
.cta-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:30px 34px;flex-wrap:wrap}
.cta-bar h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:6px}
.cta-bar p{margin:0;font-size:14px;color:var(--c-text-2)}

/* ============ 页脚 ============ */
.site-footer{background:#050810;border-top:1px solid var(--c-line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding-bottom:46px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:13px;line-height:1.85;color:var(--c-muted);max-width:300px;margin:0}
.footer-col h4{font-size:13px;letter-spacing:1.2px;color:var(--c-text-2);margin-bottom:16px;font-weight:700}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:13.5px;color:var(--c-muted)}
.footer-col ul li a:hover{color:var(--c-brand-2)}
.footer-contact{font-size:13.5px;color:var(--c-muted);line-height:1.9}
.footer-bottom{border-top:1px solid var(--c-line);padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:var(--c-muted);letter-spacing:.3px}

/* ============ 移动端底部 Tab ============ */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:1020;display:none;
  height:60px;padding-bottom:env(safe-area-inset-bottom);
  background:rgba(7,11,22,.95);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-top:1px solid var(--c-line);
}
.mobile-tab a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--c-muted);position:relative;transition:color var(--t);
}
.mobile-tab a svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.mobile-tab a::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%) scaleX(0);width:24px;height:3px;border-radius:0 0 3px 3px;background:var(--c-brand-2);box-shadow:0 0 10px rgba(127,168,255,.9);transition:transform var(--t)}
.mobile-tab a.active{color:var(--c-brand-2)}
.mobile-tab a.active::before{transform:translateX(-50%) scaleX(1)}
.back-top{
  position:fixed;right:20px;bottom:28px;z-index:1015;width:44px;height:44px;border-radius:50%;
  display:none;align-items:center;justify-content:center;
  background:var(--glass-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border:1px solid var(--c-line);color:var(--c-brand-2);cursor:pointer;
  box-shadow:var(--shadow-card);transition:transform var(--t),border-color var(--t);
}
.back-top:hover{border-color:var(--c-brand-2);transform:translateY(-2px)}
.back-top.show{display:flex}
.back-top svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ============ 响应式 ============ */
@media(max-width:1199px){
  .spot-points{grid-template-columns:1fr}
}
@media(max-width:991px){
  .section{padding:72px 0}
  .hero{min-height:74vh}
  .hero .container{padding-top:96px;padding-bottom:80px}
  .hero-panel{margin-top:8px}
  .spotlight{grid-template-columns:1fr}
  .spot-side{flex-direction:row}
  .spot-mini{flex:1}
  .news-grid{grid-template-columns:1fr;grid-template-rows:none}
  .news-card.is-lead{grid-row:auto}
  .table-outer::after{opacity:1}
  .plan-table td:first-child{box-shadow:6px 0 12px -8px rgba(0,0,0,.9)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media(max-width:767px){
  .section{padding:56px 0}
  .sec-head{margin-bottom:30px}
  .hero{min-height:70vh}
  .hero .container{padding-top:78px;padding-bottom:66px}
  .hero-sub{max-width:100%}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 auto;min-width:132px}
  .flow-grid{grid-template-columns:1fr;gap:0;margin-top:4px}
  .flow-grid::before{top:0;bottom:0;left:5px;right:auto;width:2px;height:auto;background:linear-gradient(180deg,rgba(47,107,255,.7),rgba(31,224,196,.7))}
  .flow-step{padding:0 0 30px 34px}
  .flow-step:last-child{padding-bottom:0}
  .flow-step::before{top:6px;left:0}
  .flow-num{font-size:24px;margin-bottom:6px}
  .spot-side{flex-direction:column}
  .spot-body{padding:22px 20px 24px}
  .signup{padding:24px 20px 26px}
  .cta-bar{padding:24px 20px;flex-direction:column;align-items:flex-start}
  .cta-bar .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:24px;padding-bottom:34px}
  .site-footer{padding-top:44px}
  .mobile-tab{display:flex}
  body{padding-bottom:72px}
  .back-top{bottom:78px;right:14px}
  .footer-bottom{padding-bottom:16px}
}
@media(max-width:575px){
  .container{padding-left:16px;padding-right:16px}
  .hero-actions .btn{flex:1 1 100%}
  .spot-points{grid-template-columns:1fr}
  .news-card.is-lead .news-title{font-size:18px}
  .plan-table{min-width:640px}
  .plan-table th,.plan-table td{padding:0 14px}
  .hero-status{font-size:11px;gap:8px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  .hero-pulse::after{display:none}
}

/* roulang page: article */
:root{
  --c-bg:#070B16;
  --c-bg-2:#0A1224;
  --c-panel:#0E1830;
  --c-line:rgba(120,160,255,.16);
  --c-line-strong:rgba(127,168,255,.45);
  --c-brand:#2F6BFF;
  --c-brand-2:#7FA8FF;
  --c-cyan:#1FE0C4;
  --c-hot:#FF7A3C;
  --c-text:#E8EEFF;
  --c-text-2:#A6B4D2;
  --c-muted:#6B7997;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow-card:0 18px 40px -18px rgba(0,0,0,.85), inset 0 1px 0 rgba(255,255,255,.06);
  --t:200ms cubic-bezier(.2,.7,.2,1);

  --bs-body-bg:#070B16;
  --bs-body-color:#E8EEFF;
  --bs-primary:#2F6BFF;
  --bs-link-color:#7FA8FF;
  --bs-link-hover-color:#A9C6FF;
  --bs-border-color:rgba(120,160,255,.16);
  --bs-border-radius:18px;
  --bs-border-radius-lg:18px;
  --bs-border-radius-sm:12px;
  --bs-card-bg:#0E1830;
  --bs-card-color:#E8EEFF;
  --bs-card-border-color:rgba(120,160,255,.16);
  --bs-card-border-radius:18px;
  --bs-card-inner-border-radius:16px;
  --bs-accordion-bg:transparent;
  --bs-accordion-color:#E8EEFF;
  --bs-accordion-border-color:rgba(120,160,255,.16);
  --bs-accordion-border-width:0;
  --bs-accordion-btn-color:#E8EEFF;
  --bs-accordion-btn-bg:transparent;
  --bs-accordion-active-bg:transparent;
  --bs-accordion-active-color:#7FA8FF;
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-form-control-bg:rgba(255,255,255,.03);
  --bs-table-bg:transparent;
  --bs-table-color:#E8EEFF;
  --bs-table-border-color:rgba(120,160,255,.16);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:
    radial-gradient(900px 480px at 82% -8%, rgba(47,107,255,.16), transparent 62%),
    radial-gradient(760px 420px at 6% 4%, rgba(31,224,196,.08), transparent 60%),
    var(--c-bg);
  color:var(--c-text);
  font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--c-brand-2);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--c-text);}
img{max-width:100%;display:block;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-cyan);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media (min-width:1400px){.container{max-width:1280px;}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:linear-gradient(180deg, rgba(10,18,36,.94), rgba(7,11,22,.88));
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--c-line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:66px;}
.logo{display:flex;flex-direction:column;line-height:1.15;text-decoration:none;}
.logo-main{
  font-size:19px;font-weight:800;letter-spacing:.5px;
  background:linear-gradient(92deg,#EAF1FF 8%, var(--c-brand-2) 62%, var(--c-cyan) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.logo-sub{font-size:11px;color:var(--c-muted);letter-spacing:1.2px;margin-top:2px;}
.nav-menu{display:flex;align-items:center;gap:26px;}
.nav-menu a{
  position:relative;font-size:15px;color:var(--c-text-2);padding:8px 0;text-decoration:none;
}
.nav-menu a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-brand),var(--c-cyan));
  transition:left var(--t),right var(--t);
}
.nav-menu a:hover,.nav-menu a.active{color:var(--c-brand-2);}
.nav-menu a:hover::after,.nav-menu a.active::after{left:0;right:0;}
.header-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 18px;border-radius:12px;font-size:14px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,#4B82FF,#2F6BFF 62%,#1E4FD8);
  border:1px solid rgba(160,196,255,.35);
  box-shadow:0 8px 24px -8px rgba(47,107,255,.65), inset 0 1px 0 rgba(255,255,255,.22);
  white-space:nowrap;transition:transform var(--t),filter var(--t),box-shadow var(--t);
}
.header-cta:hover{color:#fff;filter:brightness(1.07);transform:translateY(-1px);box-shadow:0 12px 28px -8px rgba(47,107,255,.8), inset 0 1px 0 rgba(255,255,255,.26);}
.header-cta:active{transform:translateY(0);filter:brightness(.95);}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;display:none;
  height:calc(60px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:linear-gradient(180deg, rgba(10,18,36,.94), rgba(5,8,16,.98));
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-top:1px solid var(--c-line);
}
.mobile-tabbar .tab-inner{display:flex;height:60px;}
.tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--c-muted);text-decoration:none;position:relative;transition:color var(--t);
}
.tab-item i{font-size:17px;}
.tab-item.active,.tab-item:hover{color:var(--c-brand-2);}
.tab-item.active::before{
  content:"";position:absolute;top:4px;width:18px;height:4px;border-radius:3px;
  background:linear-gradient(90deg,var(--c-brand),var(--c-cyan));
  box-shadow:0 0 12px rgba(31,224,196,.75);
}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:26px 0 0;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--c-muted);}
.crumb a{color:var(--c-text-2);}
.crumb a:hover{color:var(--c-brand-2);}
.crumb .sep{color:rgba(120,160,255,.4);}
.crumb .current{color:var(--c-brand-2);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头 ---------- */
.article-head{padding:22px 0 34px;border-bottom:1px solid var(--c-line);}
.badge-cat{
  display:inline-block;font-size:11.5px;letter-spacing:.6px;padding:5px 12px;color:var(--c-brand-2);
  background:rgba(47,107,255,.1);border:1px solid rgba(47,107,255,.42);
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
}
.article-title{
  margin:18px 0 14px;font-size:clamp(26px,3.4vw,40px);line-height:1.22;font-weight:800;
  letter-spacing:-.4px;color:var(--c-text);max-width:22ch;
}
.article-lead{
  font-size:15.5px;line-height:1.85;color:var(--c-text-2);max-width:72ch;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:20px;
  font-size:12.5px;color:var(--c-muted);
}
.meta-row span{display:inline-flex;align-items:center;gap:6px;}
.meta-num{
  font-family:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-variant-numeric:tabular-nums;letter-spacing:.4px;color:var(--c-text-2);
}

/* ---------- 正文布局 ---------- */
.article-wrap{padding:44px 0 72px;}
.article-body{font-size:16px;line-height:1.9;color:var(--c-text-2);max-width:800px;}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 19px;}
.article-body h2{
  position:relative;margin:44px 0 16px;padding-left:16px;
  font-size:clamp(21px,2.3vw,27px);line-height:1.35;font-weight:700;color:var(--c-text);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:3px;border-radius:2px;
  background:linear-gradient(180deg,var(--c-brand),var(--c-cyan));
  box-shadow:0 0 12px rgba(31,224,196,.55);
}
.article-body h3{margin:30px 0 12px;font-size:20px;font-weight:700;color:var(--c-text);}
.article-body h4{margin:24px 0 10px;font-size:17px;font-weight:700;color:var(--c-text);}
.article-body ul,.article-body ol{margin:0 0 19px;padding-left:22px;}
.article-body li{margin-bottom:8px;}
.article-body li::marker{color:var(--c-brand-2);}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--c-cyan);
  background:rgba(31,224,196,.06);border-radius:0 12px 12px 0;color:var(--c-text);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:14px;margin:24px auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:12px;color:var(--c-muted);text-align:center;margin-top:10px;}
.article-body a{color:var(--c-brand-2);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--c-cyan);}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14px;}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--c-line);text-align:left;}
.article-body th{background:rgba(120,160,255,.09);color:var(--c-text);font-weight:700;}
.article-body tbody tr:nth-child(even) td{background:rgba(255,255,255,.03);}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:32px 0;}
.article-body code{
  font-family:"JetBrains Mono",ui-monospace,monospace;font-size:13.5px;
  background:rgba(47,107,255,.14);border:1px solid rgba(47,107,255,.28);
  padding:1px 6px;border-radius:6px;color:#CBDCFF;
}
.empty-box{
  border:1px dashed var(--c-line);border-radius:var(--radius-lg);
  padding:54px 24px;text-align:center;background:rgba(14,24,48,.5);
}
.empty-box i{font-size:30px;color:var(--c-brand-2);}
.empty-box p{margin:14px 0 20px;color:var(--c-text-2);}

/* ---------- 侧栏 ---------- */
.side-col{position:sticky;top:88px;}
.side-card{
  background:var(--c-panel);border:1px solid var(--c-line);border-radius:var(--radius-lg);
  padding:22px;box-shadow:var(--shadow-card);margin-bottom:20px;
}
.side-card h3{
  margin:0 0 14px;font-size:14px;font-weight:700;color:var(--c-text);
  display:flex;align-items:center;gap:8px;letter-spacing:.4px;
}
.side-card h3::before{
  content:"";width:3px;height:14px;border-radius:2px;
  background:linear-gradient(180deg,var(--c-brand),var(--c-cyan));
}
.point-list{list-style:none;margin:0;padding:0;}
.point-list li{
  position:relative;padding-left:18px;font-size:13.5px;line-height:1.8;color:var(--c-text-2);margin-bottom:10px;
}
.point-list li:last-child{margin-bottom:0;}
.point-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border-radius:3px;
  background:var(--c-cyan);box-shadow:0 0 8px rgba(31,224,196,.7);
}
.rec-list{display:flex;flex-direction:column;gap:12px;}
.rec-item{
  display:block;padding:12px 14px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.025);border:1px solid transparent;
  transition:border-color var(--t),background var(--t);
}
.rec-item:hover{background:rgba(47,107,255,.09);border-color:var(--c-line-strong);}
.rec-title{font-size:13.5px;color:var(--c-text);line-height:1.6;margin:0 0 6px;}
.rec-item:hover .rec-title{color:var(--c-brand-2);}
.rec-date{
  font-family:"JetBrains Mono",ui-monospace,monospace;font-size:11.5px;
  font-variant-numeric:tabular-nums;color:var(--c-muted);letter-spacing:.4px;
}

/* ---------- 按钮 ---------- */
.btn-glow,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:12px;font-size:14.5px;font-weight:700;
  text-decoration:none;cursor:pointer;transition:transform var(--t),filter var(--t),background var(--t),border-color var(--t),box-shadow var(--t);
}
.btn-glow{
  color:#fff;border:1px solid rgba(160,196,255,.35);
  background:linear-gradient(135deg,#4B82FF,#2F6BFF 62%,#1E4FD8);
  box-shadow:0 8px 24px -8px rgba(47,107,255,.65), inset 0 1px 0 rgba(255,255,255,.22);
}
.btn-glow:hover{color:#fff;filter:brightness(1.07);transform:translateY(-1px);box-shadow:0 14px 30px -8px rgba(47,107,255,.8), inset 0 1px 0 rgba(255,255,255,.26);}
.btn-glow:active{transform:translateY(0);filter:brightness(.94);}
.btn-line{
  color:var(--c-text);background:transparent;border:1px solid var(--c-line-strong);
}
.btn-line:hover{color:var(--c-brand-2);background:rgba(47,107,255,.1);border-color:var(--c-brand-2);transform:translateY(-1px);}
.btn-line:active{transform:translateY(0);}
.btn-block{width:100%;}

/* ---------- CTA 条 ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:26px;
  margin:6px 0 0;padding:26px 30px;border-radius:var(--radius-lg);
  background:linear-gradient(160deg, rgba(20,34,64,.72), rgba(10,18,34,.55));
  -webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--c-line);box-shadow:var(--shadow-card);
}
.cta-band h3{margin:0 0 6px;font-size:19px;font-weight:700;color:var(--c-text);}
.cta-band p{margin:0;font-size:14px;color:var(--c-text-2);}

/* ---------- 继续了解 ---------- */
.sec-head{margin-bottom:26px;}
.sec-head h2{margin:0 0 8px;font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--c-text);}
.sec-head p{margin:0;font-size:14.5px;color:var(--c-text-2);}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.soft-card{
  display:flex;flex-direction:column;overflow:hidden;border-radius:var(--radius-lg);
  background:var(--c-panel);border:1px solid var(--c-line);
  transition:border-color var(--t),transform var(--t),box-shadow var(--t);
}
.soft-card:hover{border-color:var(--c-line-strong);transform:translateY(-2px);box-shadow:var(--shadow-card);}
.soft-thumb{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(150deg,#12203C,#0A1224);}
.soft-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 260ms cubic-bezier(.2,.7,.2,1);}
.soft-card:hover .soft-thumb img{transform:scale(1.04);}
.soft-body{padding:18px 20px 22px;}
.soft-body h3{margin:0 0 8px;font-size:16px;font-weight:700;color:var(--c-text);line-height:1.55;}
.soft-body p{margin:0;font-size:13.5px;line-height:1.75;color:var(--c-text-2);}
.soft-link{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:13px;color:var(--c-brand-2);}
.soft-card:hover .soft-link i{transform:translateX(4px);}
.soft-link i{transition:transform var(--t);font-size:11px;}

/* ---------- FAQ ---------- */
.faq-wrap{background:var(--c-bg-2);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);padding:72px 0;}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--c-line);}
.accordion-item:last-child{border-bottom:0;}
.accordion-button{
  padding:18px 46px 18px 16px;background:transparent;color:var(--c-text);
  font-size:16.5px;font-weight:700;line-height:1.6;box-shadow:none;border-radius:0;
}
.accordion-button:not(.collapsed){
  color:var(--c-brand-2);background:transparent;
  box-shadow:inset 2px 0 0 var(--c-cyan);
}
.accordion-button:focus{box-shadow:inset 2px 0 0 var(--c-cyan);}
.accordion-button::after{
  content:"+";background-image:none;font-size:22px;font-weight:400;line-height:1;
  width:auto;height:auto;color:var(--c-brand-2);transform:none;
  transition:transform var(--t),color var(--t);
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--c-cyan);}
.accordion-body{padding:0 16px 22px;font-size:15px;line-height:1.85;color:var(--c-text-2);max-width:72ch;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#050810;border-top:1px solid var(--c-line);padding:56px 0 26px;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;}
.footer-brand p{margin:16px 0 0;font-size:13.5px;line-height:1.8;color:var(--c-muted);max-width:34ch;}
.footer-col h4{margin:0 0 14px;font-size:14px;font-weight:700;color:var(--c-text);letter-spacing:.4px;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:13.5px;color:var(--c-text-2);}
.footer-col a:hover{color:var(--c-brand-2);}
.footer-contact{font-size:13px;line-height:2;color:var(--c-muted);}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:40px;padding-top:20px;border-top:1px solid var(--c-line);
  font-size:12.5px;color:var(--c-muted);
}

/* ---------- 回顶 ---------- */
.to-top{
  position:fixed;right:20px;bottom:84px;z-index:1020;width:44px;height:44px;border-radius:50%;
  display:none;align-items:center;justify-content:center;
  background:rgba(14,24,48,.92);border:1px solid var(--c-line-strong);color:var(--c-brand-2);
  box-shadow:0 12px 26px -12px rgba(0,0,0,.9);cursor:pointer;transition:transform var(--t),color var(--t),border-color var(--t);
}
.to-top:hover{transform:translateY(-2px);color:var(--c-cyan);border-color:var(--c-cyan);}
.to-top.show{display:flex;}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity 420ms cubic-bezier(.2,.7,.2,1),transform 420ms cubic-bezier(.2,.7,.2,1);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:991px){
  .nav-menu{display:none;}
  .mobile-tabbar{display:block;}
  body{padding-bottom:72px;}
  .header-inner{height:62px;}
  .side-col{position:static;margin-top:36px;}
  .article-wrap{padding:34px 0 56px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .to-top{bottom:76px;}
}
@media (max-width:767px){
  .article-title{max-width:none;}
  .meta-row{gap:14px;font-size:12px;}
  .faq-wrap{padding:54px 0;}
  .card-grid{grid-template-columns:1fr;}
  .article-body h2{margin-top:34px;}
}
@media (max-width:575px){
  .container{padding-left:16px;padding-right:16px;}
  .logo-main{font-size:17px;}
  .logo-sub{font-size:10px;letter-spacing:.8px;}
  .header-cta{height:34px;padding:0 14px;font-size:13px;}
  .article-head{padding:16px 0 26px;}
  .crumb .current{max-width:22ch;}
  .cta-band{padding:22px 20px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
}

/* roulang page: category1 */
:root{
  --c-bg:#070B16;
  --c-bg-2:#0A1224;
  --c-panel:#0E1830;
  --c-line:rgba(120,160,255,.16);
  --c-brand:#2F6BFF;
  --c-brand-2:#7FA8FF;
  --c-cyan:#1FE0C4;
  --c-hot:#FF7A3C;
  --c-text:#E8EEFF;
  --c-text-2:#A6B4D2;
  --c-muted:#6B7997;
  --r-card:18px;
  --r-img:14px;
  --r-btn:12px;
  --shadow-card:0 18px 40px -18px rgba(0,0,0,.85), inset 0 1px 0 rgba(255,255,255,.06);
  --glass-bg:linear-gradient(160deg, rgba(20,34,64,.72), rgba(10,18,34,.55));
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-sans:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;

  --bs-body-bg:#070B16;
  --bs-body-color:#E8EEFF;
  --bs-primary:#2F6BFF;
  --bs-primary-rgb:47,107,255;
  --bs-link-color:#7FA8FF;
  --bs-link-hover-color:#A8C4FF;
  --bs-border-color:rgba(120,160,255,.16);
  --bs-border-radius:12px;
  --bs-card-bg:#0E1830;
  --bs-card-border-color:rgba(120,160,255,.16);
  --bs-card-border-radius:18px;
  --bs-card-color:#E8EEFF;
  --bs-accordion-bg:transparent;
  --bs-accordion-color:#E8EEFF;
  --bs-accordion-border-color:rgba(120,160,255,.16);
  --bs-accordion-btn-color:#E8EEFF;
  --bs-accordion-btn-bg:transparent;
  --bs-accordion-active-bg:transparent;
  --bs-accordion-active-color:#7FA8FF;
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-form-control-bg:rgba(255,255,255,.03);
  --bs-table-bg:transparent;
  --bs-table-color:#E8EEFF;
  --bs-table-border-color:rgba(120,160,255,.16);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:15px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-brand-2);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:#A8C4FF;}
button{font-family:inherit;}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.25;color:var(--c-text);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-cyan);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:1200px;
  margin-left:auto;
  margin-right:auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:1400px){
  .container{max-width:1280px;}
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(7,11,22,.82);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--c-line);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(127,168,255,.55),transparent);
  pointer-events:none;
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:66px;
}
.logo{
  display:flex;
  flex-direction:column;
  gap:2px;
  line-height:1.1;
  flex-shrink:0;
}
.logo-main{
  font-size:19px;
  font-weight:800;
  letter-spacing:.5px;
  color:#FFFFFF;
}
.logo-sub{
  font-size:11px;
  letter-spacing:1.2px;
  color:var(--c-text-2);
  font-weight:500;
}
.logo:hover .logo-main{color:var(--c-brand-2);}
.logo:hover .logo-sub{color:var(--c-brand-2);}
.nav-menu{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-menu a{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  font-size:15px;
  color:var(--c-text-2);
  border-radius:8px;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:50%;right:50%;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--c-brand-2);
  transition:left .2s var(--ease),right .2s var(--ease);
}
.nav-menu a:hover{color:var(--c-text);background:rgba(127,168,255,.07);}
.nav-menu a:hover::after{left:14px;right:14px;}
.nav-menu a.active{color:var(--c-brand-2);}
.nav-menu a.active::after{left:14px;right:14px;box-shadow:0 0 12px rgba(127,168,255,.7);}
.header-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:40px;
  padding:0 20px;
  border-radius:var(--r-btn);
  font-size:14px;
  font-weight:700;
  color:#FFFFFF;
  background:linear-gradient(135deg,#2F6BFF,#1B4FD8);
  border:1px solid rgba(127,168,255,.45);
  box-shadow:0 8px 24px -8px rgba(47,107,255,.65), inset 0 1px 0 rgba(255,255,255,.18);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
  white-space:nowrap;
}
.header-cta:hover{
  color:#FFFFFF;
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 12px 30px -8px rgba(47,107,255,.85), inset 0 1px 0 rgba(255,255,255,.22);
}
.header-cta:active{transform:translateY(0);filter:brightness(.95);}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:700;
  letter-spacing:.3px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-primary{
  color:#FFFFFF;
  background:linear-gradient(135deg,#2F6BFF,#1B4FD8);
  border-color:rgba(127,168,255,.45);
  box-shadow:0 8px 24px -8px rgba(47,107,255,.65), inset 0 1px 0 rgba(255,255,255,.18);
}
.btn-primary:hover{
  color:#FFFFFF;
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 14px 32px -8px rgba(47,107,255,.9), inset 0 1px 0 rgba(255,255,255,.22);
}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}
.btn-ghost{
  color:var(--c-text);
  background:transparent;
  border-color:rgba(127,168,255,.38);
}
.btn-ghost:hover{
  color:#FFFFFF;
  background:rgba(47,107,255,.14);
  border-color:rgba(127,168,255,.7);
  transform:translateY(-1px);
}
.btn-ghost:active{transform:translateY(0);background:rgba(47,107,255,.2);}
.btn:disabled,.btn.disabled{opacity:.45;box-shadow:none;cursor:not-allowed;}

/* ---------- Bootstrap 组件覆写 ---------- */
.navbar{background:transparent;border:0;}
.card{
  background:var(--c-panel);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  color:var(--c-text);
  box-shadow:var(--shadow-card);
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.5px;
  color:var(--c-brand-2);
  background:rgba(47,107,255,.1);
  border:1px solid rgba(47,107,255,.42);
  border-radius:6px;
  clip-path:polygon(6px 0,100% 0,100% calc(100% - 6px),calc(100% - 6px) 100%,0 100%,0 6px);
}
.form-control,.form-select{
  background:rgba(255,255,255,.03);
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  color:var(--c-text);
  font-size:15px;
  padding:12px 14px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.form-control::placeholder{color:var(--c-muted);}
.form-control:focus,.form-select:focus{
  background:rgba(255,255,255,.05);
  border-color:var(--c-brand);
  box-shadow:0 0 0 3px rgba(47,107,255,.22);
  color:var(--c-text);
}
.table{
  color:var(--c-text);
  border-color:var(--c-line);
  --bs-table-bg:transparent;
  --bs-table-striped-bg:rgba(255,255,255,.03);
}
.table>thead{background:rgba(127,168,255,.06);}

/* ---------- 分类小 Hero ---------- */
.cat-hero{
  position:relative;
  overflow:hidden;
  min-height:280px;
  display:flex;
  align-items:center;
  padding:56px 0 52px;
  background-color:var(--c-bg-2);
  background-image:
    linear-gradient(90deg,#070B16 6%,rgba(7,11,22,.82) 52%,rgba(7,11,22,.38) 100%),
    url("/assets/images/backpic/back-1.webp");
  background-size:cover,cover;
  background-position:left center,right center;
  background-repeat:no-repeat,no-repeat;
  border-bottom:1px solid var(--c-line);
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(127,168,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(127,168,255,.055) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 45%,transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0%,#000 45%,transparent 100%);
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:1;}
.crumbs{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  color:var(--c-muted);
  margin-bottom:18px;
}
.crumbs a{color:var(--c-text-2);}
.crumbs a:hover{color:var(--c-brand-2);}
.crumbs .cur{color:var(--c-brand-2);}
.crumbs span.sep{color:rgba(127,168,255,.45);}
.cat-hero h1{
  font-size:clamp(26px,4.2vw,42px);
  line-height:1.18;
  font-weight:800;
  letter-spacing:-.4px;
  max-width:820px;
}
.hero-lead{
  margin-top:14px;
  font-size:15.5px;
  line-height:1.8;
  color:var(--c-text-2);
  max-width:620px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}

/* ---------- 区块通用 ---------- */
.section{padding:76px 0;}
.section.tight{padding:56px 0;}
.section-head{max-width:760px;margin-bottom:34px;}
.section-head h2{
  font-size:clamp(23px,3vw,34px);
  line-height:1.28;
  letter-spacing:-.3px;
}
.section-head p{
  margin-top:12px;
  color:var(--c-text-2);
  font-size:15.5px;
  line-height:1.8;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:2px;
  text-transform:uppercase;
  color:var(--c-cyan);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;height:1px;
  background:linear-gradient(90deg,var(--c-cyan),transparent);
}

/* ---------- 入口导航布局 ---------- */
.entry-layout{position:relative;}
.anchor-nav{
  position:sticky;
  top:90px;
  padding:18px;
  border-radius:var(--r-card);
  background:linear-gradient(160deg, rgba(20,34,64,.72), rgba(10,18,34,.55));
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--c-line);
  box-shadow:var(--shadow-card);
}
.anchor-nav h2{
  font-size:13px;
  letter-spacing:1.5px;
  color:var(--c-muted);
  font-weight:600;
  margin-bottom:12px;
  font-family:var(--font-mono);
}
.anchor-nav a{
  position:relative;
  display:block;
  padding:9px 12px 9px 14px;
  font-size:14.5px;
  color:var(--c-text-2);
  border-radius:8px;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.anchor-nav a::before{
  content:"";
  position:absolute;
  left:0;top:9px;bottom:9px;
  width:2px;
  border-radius:2px;
  background:transparent;
  transition:background-color .2s var(--ease),box-shadow .2s var(--ease);
}
.anchor-nav a:hover{color:var(--c-text);background:rgba(127,168,255,.07);}
.anchor-nav a.active{
  color:var(--c-brand-2);
  background:rgba(47,107,255,.1);
}
.anchor-nav a.active::before{
  background:var(--c-cyan);
  box-shadow:0 0 12px rgba(31,224,196,.85);
}
.anchor-note{
  margin-top:16px;
  padding-top:14px;
  border-top:1px solid var(--c-line);
  font-size:12.5px;
  line-height:1.75;
  color:var(--c-muted);
}

.entry-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;
}
.entry-card{
  position:relative;
  display:flex;
  align-items:flex-start;
  gap:14px;
  padding:20px 18px;
  border-radius:16px;
  background:var(--c-panel);
  border:1px solid var(--c-line);
  box-shadow:0 14px 32px -20px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.04);
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
  scroll-margin-top:96px;
}
.entry-card:hover{
  border-color:rgba(127,168,255,.45);
  background:#101B36;
  transform:translateY(-2px);
  box-shadow:0 20px 42px -22px rgba(47,107,255,.65), inset 0 1px 0 rgba(255,255,255,.06);
}
.entry-card:hover .entry-title{color:var(--c-brand-2);}
.entry-card:hover .entry-arrow{transform:translateX(4px);color:var(--c-cyan);}
.entry-num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:13px;
  color:rgba(127,168,255,.55);
  padding-top:3px;
  flex-shrink:0;
  letter-spacing:1px;
}
.entry-icon{
  flex-shrink:0;
  width:38px;height:38px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:11px;
  font-size:16px;
  color:var(--c-brand-2);
  background:rgba(47,107,255,.12);
  border:1px solid rgba(47,107,255,.32);
}
.entry-body{flex:1;min-width:0;}
.entry-title{
  font-size:16.5px;
  font-weight:700;
  color:var(--c-text);
  transition:color .2s var(--ease);
}
.entry-desc{
  margin-top:6px;
  font-size:13.5px;
  line-height:1.7;
  color:var(--c-text-2);
}
.entry-arrow{
  flex-shrink:0;
  align-self:center;
  font-size:13px;
  color:var(--c-muted);
  transition:transform .2s var(--ease),color .2s var(--ease);
}

/* ---------- 核对区块 ---------- */
.check-block{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);
  gap:24px;
  align-items:center;
  margin-top:24px;
  padding:22px;
  border-radius:var(--r-card);
  background:linear-gradient(160deg, rgba(20,34,64,.66), rgba(10,18,34,.5));
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--c-line);
  box-shadow:var(--shadow-card);
}
.check-media{
  position:relative;
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--c-line);
}
.check-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  filter:saturate(108%);
}
.check-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,11,22,0) 40%,rgba(7,11,22,.7));
  pointer-events:none;
}
.check-body h3{font-size:19px;margin-bottom:12px;}
.check-list li{
  position:relative;
  padding-left:20px;
  font-size:14.5px;
  line-height:1.8;
  color:var(--c-text-2);
  margin-bottom:10px;
}
.check-list li:last-child{margin-bottom:0;}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--c-cyan);
  box-shadow:0 0 10px rgba(31,224,196,.85);
}

/* ---------- FAQ 手风琴 ---------- */
.faq-wrap{max-width:860px;}
.accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--c-line);
}
.accordion-item:first-of-type{border-top:1px solid var(--c-line);}
.accordion-button{
  display:flex;
  align-items:center;
  gap:16px;
  width:100%;
  padding:22px 6px 22px 18px;
  font-size:16.5px;
  font-weight:700;
  color:var(--c-text);
  background:transparent;
  border:0;
  border-radius:0;
  box-shadow:none;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.accordion-button::after{display:none;}
.accordion-button:hover{color:var(--c-brand-2);}
.accordion-button:not(.collapsed){
  color:var(--c-brand-2);
  background:transparent;
  box-shadow:inset 2px 0 0 var(--c-cyan);
}
.faq-icon{
  margin-left:auto;
  flex-shrink:0;
  width:26px;height:26px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:8px;
  border:1px solid var(--c-line);
  color:var(--c-text-2);
  font-size:12px;
  transition:transform .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.accordion-button:not(.collapsed) .faq-icon{
  transform:rotate(45deg);
  color:var(--c-cyan);
  border-color:rgba(31,224,196,.55);
}
.accordion-body{
  padding:0 6px 24px 18px;
  font-size:15px;
  line-height:1.85;
  color:var(--c-text-2);
  max-width:72ch;
}

/* ---------- CTA 条 ---------- */
.cta-bar{
  display:flex;
  align-items:center;
  gap:28px;
  padding:32px;
  border-radius:var(--r-card);
  background:linear-gradient(160deg, rgba(20,34,64,.78), rgba(10,18,34,.6));
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid rgba(127,168,255,.28);
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.cta-bar::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:2px;
  background:linear-gradient(90deg,var(--c-brand),var(--c-cyan),transparent);
}
.cta-text{flex:1;min-width:0;}
.cta-text h2{font-size:clamp(20px,2.6vw,28px);line-height:1.3;}
.cta-text p{margin-top:10px;color:var(--c-text-2);font-size:14.5px;line-height:1.8;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex-shrink:0;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#050810;
  border-top:1px solid var(--c-line);
  padding:64px 0 0;
  margin-top:20px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:44px;
}
.footer-brand p{
  margin-top:16px;
  font-size:13.5px;
  line-height:1.85;
  color:var(--c-muted);
  max-width:320px;
}
.footer-col h4{
  font-size:13px;
  font-weight:700;
  letter-spacing:1.2px;
  color:var(--c-text-2);
  margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{
  font-size:13.5px;
  color:var(--c-muted);
  transition:color .2s var(--ease);
}
.footer-col ul li a:hover{color:var(--c-brand-2);}
.footer-contact{
  font-size:13px;
  line-height:2;
  color:var(--c-muted);
}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  padding:18px 0 22px;
  border-top:1px solid rgba(120,160,255,.1);
  font-size:12.5px;
  color:var(--c-muted);
}

/* ---------- 移动底部 Tab ---------- */
.mobile-tab{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:200;
  height:calc(60px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(10,18,36,.94);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-top:1px solid var(--c-line);
}
.tab-item{
  position:relative;
  flex:1;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  font-size:11px;
  color:var(--c-muted);
  transition:color .2s var(--ease);
}
.tab-item i{font-size:17px;}
.tab-item.active{color:var(--c-brand-2);}
.tab-item.active::before{
  content:"";
  position:absolute;
  top:0;
  width:26px;height:3px;
  border-radius:0 0 3px 3px;
  background:var(--c-brand-2);
  box-shadow:0 0 12px rgba(127,168,255,.85);
}
.tab-item:hover{color:var(--c-text-2);}

/* ---------- 滚动淡入 ---------- */
.reveal-init{opacity:0;transform:translateY(6px);transition:opacity .22s var(--ease),transform .22s var(--ease);}
.reveal-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{transition:none!important;animation:none!important;}
  .reveal-init{opacity:1;transform:none;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .entry-grid{gap:14px;}
}
@media (max-width:991px){
  .nav-menu{display:none;}
  .header-inner{height:62px;gap:14px;}
  .header-cta{margin-left:auto;height:38px;padding:0 16px;font-size:13.5px;}
  .logo-main{font-size:17px;}
  .logo-sub{font-size:10px;letter-spacing:1px;}
  .mobile-tab{display:flex;}
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom));}
  .anchor-nav{position:static;margin-bottom:20px;}
  .anchor-nav .anchor-links{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
  }
  .anchor-nav a{padding:7px 12px;font-size:13.5px;border:1px solid var(--c-line);border-radius:8px;}
  .anchor-nav a::before{display:none;}
  .anchor-nav a.active{border-color:rgba(31,224,196,.55);}
  .check-block{grid-template-columns:1fr;}
  .section{padding:64px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-bar{flex-direction:column;align-items:flex-start;gap:20px;padding:26px;}
  .cta-actions{width:100%;}
}
@media (max-width:767px){
  .entry-grid{grid-template-columns:1fr;}
  .cat-hero{padding:44px 0 40px;min-height:0;}
  .hero-lead{font-size:14.5px;}
  .hero-actions .btn{flex:1;min-width:0;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:26px;}
  .section-head h2{font-size:22px;}
  .entry-card{padding:18px 14px;gap:12px;}
  .entry-icon{width:34px;height:34px;font-size:15px;}
  .entry-title{font-size:15.5px;}
  .entry-desc{font-size:13px;}
  .check-block{padding:16px;}
  .accordion-button{font-size:15.5px;padding:18px 4px 18px 14px;}
  .accordion-body{padding:0 4px 20px 14px;font-size:14.5px;}
  .cta-bar{padding:22px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:519px){
  .container{padding-left:16px;padding-right:16px;}
  .cat-hero h1{font-size:24px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .tab-item{font-size:10px;}
}

/* roulang page: category2 */
:root{
  --c-bg:#070B16;
  --c-bg-2:#0A1224;
  --c-panel:#0E1830;
  --c-line:rgba(120,160,255,.16);
  --c-brand:#2F6BFF;
  --c-brand-2:#7FA8FF;
  --c-cyan:#1FE0C4;
  --c-hot:#FF7A3C;
  --c-text:#E8EEFF;
  --c-text-2:#A6B4D2;
  --c-muted:#6B7997;
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --sh:0 18px 40px -18px rgba(0,0,0,.85), inset 0 1px 0 rgba(255,255,255,.06);
  --glass:linear-gradient(160deg,rgba(20,34,64,.72),rgba(10,18,34,.55));
  --ease:cubic-bezier(.2,.7,.2,1);
  --t:200ms;
  --mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --sans:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;

  --bs-body-bg:#070B16;
  --bs-body-color:#E8EEFF;
  --bs-body-font-family:var(--sans);
  --bs-primary:#2F6BFF;
  --bs-primary-rgb:47,107,255;
  --bs-link-color:#7FA8FF;
  --bs-link-hover-color:#A9C4FF;
  --bs-border-color:rgba(120,160,255,.16);
  --bs-border-radius:12px;
  --bs-border-radius-lg:18px;
  --bs-card-bg:#0E1830;
  --bs-card-color:#E8EEFF;
  --bs-card-border-color:rgba(120,160,255,.16);
  --bs-card-border-radius:18px;
  --bs-card-cap-bg:transparent;
  --bs-accordion-bg:transparent;
  --bs-accordion-color:#E8EEFF;
  --bs-accordion-btn-color:#E8EEFF;
  --bs-accordion-btn-bg:transparent;
  --bs-accordion-active-bg:transparent;
  --bs-accordion-active-color:#7FA8FF;
  --bs-accordion-border-color:rgba(120,160,255,.16);
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-form-control-bg:rgba(255,255,255,.03);
  --bs-table-bg:transparent;
  --bs-table-color:#E8EEFF;
  --bs-table-border-color:rgba(120,160,255,.16);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--c-brand-2);text-decoration:none;transition:color var(--t) var(--ease);}
a:hover{color:#A9C4FF;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--c-cyan);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(47,107,255,.35);color:#fff;}

.container{width:100%;max-width:1200px;margin-inline:auto;padding-inline:24px;}
@media (min-width:1400px){.container{max-width:1280px;}}
@media (max-width:575.98px){.container{padding-inline:16px;}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(7,11,22,.82);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--c-line);
}
.header-inner{display:flex;align-items:center;gap:28px;height:66px;}
.logo{display:flex;flex-direction:column;line-height:1.06;text-decoration:none;flex-shrink:0;}
.logo-main{font-size:19px;font-weight:800;letter-spacing:.4px;color:var(--c-text);transition:color var(--t) var(--ease);}
.logo-sub{font-size:11px;letter-spacing:1px;color:var(--c-brand-2);margin-top:3px;}
.logo:hover .logo-main{color:var(--c-brand-2);}
.nav-menu{display:flex;align-items:center;gap:26px;margin-left:auto;}
.nav-menu a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  color:var(--c-text-2);
  text-decoration:none;
  transition:color var(--t) var(--ease);
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:50%;
  right:50%;
  bottom:0;
  height:2px;
  background:linear-gradient(90deg,var(--c-brand),var(--c-cyan));
  transition:left var(--t) var(--ease),right var(--t) var(--ease);
}
.nav-menu a:hover{color:var(--c-text);}
.nav-menu a:hover::after{left:0;right:0;}
.nav-menu a.active{color:var(--c-brand-2);}
.nav-menu a.active::after{left:0;right:0;}
.header-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:9px 18px;
  border-radius:10px;
  font-size:14px;
  font-weight:700;
  color:#fff;
  background:linear-gradient(135deg,#3B78FF,#2F6BFF);
  box-shadow:0 8px 22px -10px rgba(47,107,255,.8), inset 0 1px 0 rgba(255,255,255,.16);
  transition:filter var(--t) var(--ease),transform var(--t) var(--ease);
}
.header-cta:hover{filter:brightness(1.08);transform:translateY(-1px);color:#fff;}
.header-cta:active{transform:translateY(0);filter:brightness(.94);}
@media (max-width:991.98px){
  .nav-menu{display:none;}
  .header-cta{margin-left:auto;}
}

/* ============ 通用按钮与标签 ============ */
.btn-brand{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  color:#fff;
  background:linear-gradient(135deg,#3B78FF,#2F6BFF);
  box-shadow:0 8px 24px -8px rgba(47,107,255,.65), inset 0 1px 0 rgba(255,255,255,.18);
  transition:filter var(--t) var(--ease),transform var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.btn-brand:hover{
  color:#fff;
  filter:brightness(1.06);
  transform:translateY(-1px);
  box-shadow:0 12px 30px -8px rgba(47,107,255,.78), inset 0 1px 0 rgba(255,255,255,.22);
}
.btn-brand:active{transform:translateY(0);filter:brightness(.94);}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  border-radius:var(--r-sm);
  border:1px solid rgba(127,168,255,.42);
  background:transparent;
  color:var(--c-brand-2);
  font-size:15px;
  font-weight:600;
  transition:background var(--t) var(--ease),border-color var(--t) var(--ease),color var(--t) var(--ease),transform var(--t) var(--ease);
}
.btn-ghost:hover{
  background:rgba(47,107,255,.08);
  border-color:rgba(127,168,255,.82);
  color:#A9C4FF;
  transform:translateY(-1px);
}
.btn-ghost:active{transform:translateY(0);}
.btn-block{display:flex;width:100%;}
.badge-chip{
  display:inline-block;
  padding:5px 12px;
  font-size:12px;
  letter-spacing:.5px;
  color:var(--c-brand-2);
  background:rgba(47,107,255,.1);
  border:1px solid rgba(47,107,255,.35);
  border-radius:6px;
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
}

/* ============ 窄 Hero ============ */
.hero-narrow{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--c-line);
  background:
    radial-gradient(120% 150% at 88% 0%, rgba(47,107,255,.18), transparent 62%),
    radial-gradient(80% 120% at 10% 100%, rgba(31,224,196,.08), transparent 60%),
    var(--c-bg);
}
.hero-narrow::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(120,160,255,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,160,255,.07) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 88%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 88%);
  pointer-events:none;
}
.hero-narrow::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,107,255,.85),rgba(31,224,196,.85),transparent);
  opacity:.55;
}
.hero-watermark{
  position:absolute;
  right:-8px;
  top:50%;
  transform:translateY(-50%);
  font-size:clamp(56px,11vw,138px);
  font-weight:800;
  line-height:1;
  letter-spacing:-2px;
  white-space:nowrap;
  color:rgba(127,168,255,.05);
  pointer-events:none;
  user-select:none;
  z-index:1;
}
.hero-inner{position:relative;z-index:2;padding:56px 0 60px;max-width:840px;}
.breadcrumb-line{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--c-muted);margin-bottom:20px;}
.breadcrumb-line a{color:var(--c-text-2);}
.breadcrumb-line a:hover{color:var(--c-brand-2);}
.breadcrumb-line .current{color:var(--c-brand-2);}
.hero-inner h1{
  font-size:clamp(28px,4.4vw,44px);
  line-height:1.18;
  font-weight:800;
  letter-spacing:-.5px;
  margin:16px 0 16px;
}
.hero-lead{font-size:16px;color:var(--c-text-2);max-width:660px;margin:0 0 20px;line-height:1.85;}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.5px;
  color:var(--c-muted);
  margin-bottom:26px;
}
.hero-meta i{font-style:normal;color:rgba(127,168,255,.5);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 板块 ============ */
.section{padding:88px 0;}
.section-alt{
  background:var(--c-bg-2);
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{
  font-size:clamp(24px,3.2vw,34px);
  line-height:1.28;
  font-weight:700;
  margin:0 0 12px;
}
.section-head p{color:var(--c-text-2);font-size:15.5px;margin:0;}
@media (max-width:767.98px){
  .section{padding:56px 0;}
  .section-head{margin-bottom:30px;}
}

/* ============ 步骤流 ============ */
.steps-grid{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:52px;align-items:start;}
.steps-flow{display:grid;gap:32px;}
.step{position:relative;display:grid;grid-template-columns:72px minmax(0,1fr);gap:22px;}
.step::before{
  content:"";
  position:absolute;
  left:35px;
  top:30px;
  bottom:-32px;
  width:2px;
  background:linear-gradient(180deg,rgba(47,107,255,.55),rgba(31,224,196,.35));
}
.step:last-child::before{display:none;}
.step-index{display:flex;flex-direction:column;align-items:center;}
.step-dot{
  width:12px;height:12px;border-radius:50%;
  background:var(--c-cyan);
  box-shadow:0 0 0 6px rgba(31,224,196,.12), 0 0 14px rgba(31,224,196,.6);
  margin-top:8px;
}
.step-num{
  position:relative;
  z-index:2;
  margin-top:12px;
  padding:6px 4px;
  background:var(--c-bg);
  font-family:var(--mono);
  font-size:28px;
  font-weight:700;
  line-height:1;
  letter-spacing:1px;
  color:rgba(127,168,255,.34);
  font-variant-numeric:tabular-nums;
}
.section-alt .step-num{background:var(--c-bg-2);}
.step-body h3{font-size:20px;font-weight:700;margin:0 0 10px;line-height:1.4;}
.step-body p{color:var(--c-text-2);font-size:15px;line-height:1.85;margin:0 0 14px;max-width:72ch;}
.step-body p:last-child{margin-bottom:0;}
.step-note{
  position:relative;
  padding:12px 16px;
  border-left:3px solid var(--c-cyan);
  background:rgba(31,224,196,.06);
  border-radius:0 10px 10px 0;
  font-size:14px;
  line-height:1.8;
  color:var(--c-text-2);
}
.step-note strong{color:var(--c-cyan);font-weight:700;}

.steps-aside{position:relative;}
.side-card{
  position:sticky;
  top:92px;
  padding:26px 24px;
  border-radius:var(--r-lg);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--c-line);
  box-shadow:var(--sh);
}
.side-card h3{font-size:17px;font-weight:700;margin:0;letter-spacing:.2px;}
.dot-list{list-style:none;padding:0;margin:18px 0 22px;display:grid;gap:12px;}
.dot-list li{position:relative;padding-left:18px;font-size:14.5px;line-height:1.75;color:var(--c-text-2);}
.dot-list li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:6px;height:6px;border-radius:50%;
  background:var(--c-brand-2);
  box-shadow:0 0 8px rgba(127,168,255,.85);
}
@media (max-width:991.98px){
  .steps-grid{grid-template-columns:minmax(0,1fr);gap:36px;}
  .side-card{position:static;}
}
@media (max-width:575.98px){
  .step{grid-template-columns:52px minmax(0,1fr);gap:16px;}
  .step::before{left:25px;}
  .step-num{font-size:22px;}
  .step-body h3{font-size:18px;}
}

/* ============ 核对清单 ============ */
.check-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center;}
.check-grid h2{font-size:clamp(24px,3.2vw,34px);font-weight:700;margin:16px 0 12px;line-height:1.28;}
.check-grid > div > p{color:var(--c-text-2);font-size:15.5px;margin:0;}
.check-list{
  list-style:none;
  padding:0;
  margin:26px 0 0;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px 26px;
}
.check-list li{position:relative;padding-left:28px;font-size:15px;color:var(--c-text-2);line-height:1.7;}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;top:3px;
  width:17px;height:17px;
  border-radius:5px;
  border:1px solid rgba(31,224,196,.55);
  background:rgba(31,224,196,.12);
}
.check-list li::after{
  content:"";
  position:absolute;
  left:5px;top:7px;
  width:7px;height:4px;
  border-left:2px solid var(--c-cyan);
  border-bottom:2px solid var(--c-cyan);
  transform:rotate(-45deg);
}
.check-figure{margin:0;}
.check-figure img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--r-md);
  border:1px solid var(--c-line);
  box-shadow:var(--sh);
}
.check-figure figcaption{font-size:12.5px;color:var(--c-muted);text-align:center;margin-top:10px;}
@media (max-width:991.98px){
  .check-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
}
@media (max-width:575.98px){
  .check-list{grid-template-columns:1fr;gap:12px;}
}

/* ============ 常见卡点 ============ */
.issue-list{list-style:none;padding:0;margin:0;}
.issue-list li{
  display:grid;
  grid-template-columns:64px minmax(0,1fr);
  gap:22px;
  padding:26px 0;
  border-top:1px solid var(--c-line);
}
.issue-list li:last-child{border-bottom:1px solid var(--c-line);}
.issue-num{
  font-family:var(--mono);
  font-size:22px;
  font-weight:700;
  color:rgba(127,168,255,.42);
  line-height:1.5;
  font-variant-numeric:tabular-nums;
}
.issue-body h3{font-size:18px;font-weight:700;margin:0 0 8px;line-height:1.45;}
.issue-body p{color:var(--c-text-2);font-size:15px;margin:0;max-width:78ch;}
@media (max-width:575.98px){
  .issue-list li{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:20px 0;}
  .issue-num{font-size:18px;}
}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;}
.faq .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--c-line);
}
.faq .accordion-item:first-of-type{border-top:1px solid var(--c-line);}
.faq .accordion-button{
  position:relative;
  background:transparent;
  color:var(--c-text);
  font-size:16.5px;
  font-weight:700;
  line-height:1.6;
  padding:20px 48px 20px 18px;
  border-radius:0;
  box-shadow:none;
}
.faq .accordion-button:not(.collapsed){
  color:var(--c-brand-2);
  background:transparent;
  box-shadow:inset 2px 0 0 var(--c-cyan);
}
.faq .accordion-button::after{
  content:"+";
  position:absolute;
  right:18px;
  top:50%;
  margin-top:-11px;
  width:auto;height:auto;
  background-image:none !important;
  font-size:22px;
  font-weight:400;
  line-height:1;
  color:var(--c-brand-2);
  transform:none;
  transition:transform var(--t) var(--ease),color var(--t) var(--ease);
}
.faq .accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--c-cyan);}
.faq .accordion-button:focus{box-shadow:none;}
.faq .accordion-button:focus-visible{outline:2px solid var(--c-cyan);outline-offset:-2px;}
.faq .accordion-body{
  padding:0 48px 22px 18px;
  font-size:15px;
  line-height:1.85;
  color:var(--c-text-2);
  max-width:72ch;
}

/* ============ CTA 条 ============ */
.cta-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:30px 34px;
  border-radius:var(--r-lg);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--c-line);
  box-shadow:var(--sh);
}
.cta-bar h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;margin:0 0 8px;line-height:1.35;}
.cta-bar p{margin:0;color:var(--c-text-2);font-size:14.5px;max-width:56ch;}
@media (max-width:767.98px){
  .cta-bar{flex-direction:column;align-items:flex-start;gap:20px;padding:24px 22px;}
  .cta-bar .btn-brand{width:100%;}
}

/* ============ 页脚 ============ */
.site-footer{
  background:#050810;
  border-top:1px solid var(--c-line);
  padding:56px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand p{color:var(--c-text-2);font-size:14px;line-height:1.8;margin:16px 0 0;max-width:300px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--c-text);margin:0 0 14px;letter-spacing:.5px;}
.footer-col ul{list-style:none;padding:0;margin:0;display:grid;gap:9px;}
.footer-col ul a{font-size:13.5px;color:var(--c-text-2);}
.footer-col ul a:hover{color:var(--c-brand-2);}
.footer-contact{font-size:13.5px;line-height:2;color:var(--c-text-2);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  margin-top:42px;
  padding-top:20px;
  border-top:1px solid var(--c-line);
  font-size:12.5px;
  color:var(--c-muted);
}
@media (max-width:767.98px){
  .site-footer{padding:44px 0 24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1/-1;}
}

/* ============ 移动端底部 Tab ============ */
.mobile-tabs{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:1040;
  display:none;
  background:rgba(5,8,16,.94);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-top:1px solid var(--c-line);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tabs a{
  position:relative;
  flex:1;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:3px;
  padding:9px 2px 7px;
  font-size:11px;
  line-height:1.2;
  color:var(--c-muted);
  transition:color var(--t) var(--ease);
}
.mobile-tabs a svg{width:22px;height:22px;display:block;}
.mobile-tabs a.active{color:var(--c-brand-2);}
.mobile-tabs a.active::before{
  content:"";
  position:absolute;
  top:0;
  width:26px;
  height:4px;
  border-radius:0 0 4px 4px;
  background:var(--c-cyan);
  box-shadow:0 0 12px rgba(31,224,196,.75);
}
@media (max-width:575.98px){
  .mobile-tabs{display:flex;}
  body{padding-bottom:72px;}
}

/* ============ 滚动淡入 ============ */
[data-reveal]{opacity:0;transform:translateY(8px);transition:opacity 420ms var(--ease),transform 420ms var(--ease);}
[data-reveal].is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  [data-reveal]{opacity:1;transform:none;transition:none;}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
}

/* roulang page: category3 */
:root{
  --c-bg:#070B16;
  --c-bg-2:#0A1224;
  --c-panel:#0E1830;
  --c-line:rgba(120,160,255,.16);
  --c-line-strong:rgba(127,168,255,.45);
  --c-brand:#2F6BFF;
  --c-brand-2:#7FA8FF;
  --c-cyan:#1FE0C4;
  --c-hot:#FF7A3C;
  --c-text:#E8EEFF;
  --c-text-2:#A6B4D2;
  --c-muted:#6B7997;
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --shadow-card:0 18px 40px -18px rgba(0,0,0,.85), inset 0 1px 0 rgba(255,255,255,.06);
  --ease:cubic-bezier(.2,.7,.2,1);

  --bs-body-bg:#070B16;
  --bs-body-color:#E8EEFF;
  --bs-primary:#2F6BFF;
  --bs-link-color:#7FA8FF;
  --bs-link-hover-color:#BFD3FF;
  --bs-border-color:rgba(120,160,255,.16);
  --bs-border-radius:12px;
  --bs-card-bg:#0E1830;
  --bs-card-color:#E8EEFF;
  --bs-card-border-color:rgba(120,160,255,.16);
  --bs-card-border-radius:18px;
  --bs-card-cap-bg:rgba(127,168,255,.06);
  --bs-accordion-bg:transparent;
  --bs-accordion-color:#E8EEFF;
  --bs-accordion-btn-color:#E8EEFF;
  --bs-accordion-btn-bg:transparent;
  --bs-accordion-border-color:rgba(120,160,255,.16);
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-active-bg:transparent;
  --bs-accordion-active-color:#E8EEFF;
  --bs-form-control-bg:rgba(255,255,255,.03);
  --bs-form-control-color:#E8EEFF;
  --bs-form-control-border-color:rgba(120,160,255,.16);
  --bs-form-control-border-radius:12px;
  --bs-table-bg:transparent;
  --bs-table-color:#E8EEFF;
  --bs-table-border-color:rgba(120,160,255,.16);
  --bs-badge-font-size:11.5px;
  --bs-badge-border-radius:6px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--c-bg);
  background-image:radial-gradient(1100px 560px at 88% -140px, rgba(47,107,255,.16), transparent 62%);
  background-repeat:no-repeat;
  color:var(--c-text);
  font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  padding-bottom:76px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--c-brand-2);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:#BFD3FF}
button{font:inherit}
ul,ol{margin:0}
:focus-visible{outline:2px solid var(--c-cyan);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.mono{font-family:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;font-variant-numeric:tabular-nums}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:linear-gradient(180deg,rgba(10,18,36,.94),rgba(7,11,22,.84));
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--c-line);
}
.header-inner{display:flex;align-items:center;gap:22px;height:66px}
.logo{display:inline-flex;flex-direction:column;line-height:1.1;text-decoration:none;flex:0 0 auto}
.logo-main{font-size:19px;font-weight:800;color:var(--c-text);letter-spacing:.2px}
.logo-sub{font-size:11.5px;color:var(--c-brand-2);letter-spacing:1px;margin-top:3px}
.nav-menu{display:none;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto}
.nav-menu a{
  position:relative;display:inline-block;padding:9px 12px;font-size:15px;
  color:var(--c-text-2);border-radius:8px;transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-menu a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:3px;height:2px;border-radius:2px;
  background:var(--c-brand-2);transition:left .2s var(--ease),right .2s var(--ease);
}
.nav-menu a:hover{color:var(--c-text);background:rgba(127,168,255,.06)}
.nav-menu a:hover::after{left:12px;right:12px}
.nav-menu a.active{color:var(--c-brand-2)}
.nav-menu a.active::after{left:12px;right:12px;background:var(--c-brand-2);box-shadow:0 0 10px rgba(127,168,255,.8)}
.header-cta{
  display:inline-flex;align-items:center;justify-content:center;
  margin-left:auto;padding:9px 18px;border-radius:10px;font-size:14px;font-weight:700;
  color:#F2F7FF;border:1px solid rgba(127,168,255,.35);
  background:linear-gradient(135deg,#2F6BFF,#1B4BD8);
  box-shadow:0 8px 22px -10px rgba(47,107,255,.8),inset 0 1px 0 rgba(255,255,255,.22);
  transition:transform .2s var(--ease),filter .2s var(--ease),box-shadow .2s var(--ease);
}
.header-cta:hover{filter:brightness(1.08);transform:translateY(-1px);color:#fff}
.header-cta:active{transform:translateY(1px);filter:brightness(.95)}
@media(min-width:992px){
  .nav-menu{display:flex}
  .header-cta{margin-left:0}
}
@media(max-width:575px){
  .logo-main{font-size:17px}
  .logo-sub{font-size:10.5px;letter-spacing:.6px}
  .header-cta{padding:8px 14px;font-size:13px}
}

/* ---------- Mobile Tab ---------- */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:1045;
  display:grid;grid-template-columns:repeat(5,1fr);
  background:rgba(8,13,26,.97);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--c-line);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tab a{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;height:60px;font-size:11px;color:var(--c-muted);transition:color .2s var(--ease);
}
.mobile-tab a i{font-size:18px}
.mobile-tab a.active{color:var(--c-brand-2)}
.mobile-tab a.active::before{
  content:"";position:absolute;top:0;width:26px;height:3px;border-radius:0 0 4px 4px;
  background:var(--c-brand-2);box-shadow:0 0 10px rgba(127,168,255,.9);
}
@media(min-width:768px){
  .mobile-tab{display:none}
  body{padding-bottom:0}
}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  padding:20px 0 52px;
  border-bottom:1px solid var(--c-line);
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:right center;background-repeat:no-repeat;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,#070B16 10%,rgba(7,11,22,.86) 48%,rgba(7,11,22,.42) 100%);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(127,168,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(127,168,255,.055) 1px,transparent 1px);
  background-size:24px 24px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
}
.cat-hero .container{position:relative;z-index:2}
.breadcrumb-bar{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--c-muted);padding:14px 0 0;flex-wrap:wrap}
.breadcrumb-bar a{color:var(--c-text-2)}
.breadcrumb-bar a:hover{color:var(--c-brand-2)}
.breadcrumb-bar .sep{color:var(--c-muted);opacity:.7}
.breadcrumb-bar [aria-current]{color:var(--c-brand-2)}
.hero-inner{max-width:760px;padding-top:30px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:1px;color:var(--c-cyan);
  padding:5px 12px;border-radius:999px;
  border:1px solid rgba(31,224,196,.35);background:rgba(31,224,196,.08);
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-cyan);box-shadow:0 0 8px var(--c-cyan)}
.cat-hero h1{
  font-size:clamp(26px,4.4vw,42px);line-height:1.2;font-weight:800;letter-spacing:-.5px;
  margin:16px 0 14px;color:var(--c-text);
}
.hero-sub{margin:0;font-size:15.5px;line-height:1.85;color:var(--c-text-2);max-width:44em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.btn-primary-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:700;color:#F2F7FF;
  border:1px solid rgba(127,168,255,.35);
  background:linear-gradient(135deg,#2F6BFF,#1B4BD8);
  box-shadow:0 8px 24px -8px rgba(47,107,255,.65),inset 0 1px 0 rgba(255,255,255,.22);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
}
.btn-primary-brand:hover{filter:brightness(1.07);transform:translateY(-1px);color:#fff;box-shadow:0 12px 30px -10px rgba(47,107,255,.8),inset 0 1px 0 rgba(255,255,255,.28)}
.btn-primary-brand:active{transform:translateY(1px);filter:brightness(.94)}
.btn-ghost-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  color:var(--c-text);background:transparent;border:1px solid rgba(127,168,255,.35);
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),color .2s var(--ease);
}
.btn-ghost-brand:hover{background:rgba(47,107,255,.12);border-color:rgba(127,168,255,.7);color:#fff;transform:translateY(-1px)}
.btn-ghost-brand:active{transform:translateY(1px)}
.btn-primary-brand:disabled,.btn-ghost-brand:disabled{opacity:.45;box-shadow:none;filter:none;transform:none;pointer-events:none}

.search-stub{
  display:flex;align-items:center;gap:12px;margin-top:30px;max-width:520px;
  padding:8px 8px 8px 18px;border-radius:14px;
  background:linear-gradient(160deg,rgba(20,34,64,.72),rgba(10,18,34,.55));
  backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--c-line);box-shadow:var(--shadow-card);
}
.search-stub i{color:var(--c-muted);font-size:15px}
.search-stub input{
  flex:1 1 auto;min-width:0;background:transparent;border:0;outline:none;
  color:var(--c-text);font-size:15px;padding:6px 0;
}
.search-stub input::placeholder{color:var(--c-muted)}
.search-stub button{
  flex:0 0 auto;padding:9px 18px;border-radius:10px;font-size:14px;font-weight:600;
  color:var(--c-brand-2);border:1px solid rgba(127,168,255,.35);background:rgba(47,107,255,.18);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.search-stub button:hover{background:rgba(47,107,255,.3);color:#fff;border-color:rgba(127,168,255,.7)}

/* ---------- Sections ---------- */
.section{padding:72px 0}
.section-tight{padding:56px 0}
.section-head{max-width:720px;margin-bottom:34px}
.section-head h2{
  font-size:clamp(23px,3.2vw,34px);line-height:1.3;font-weight:700;margin:0 0 12px;
  color:var(--c-text);letter-spacing:-.2px;
}
.section-head p{margin:0;font-size:15.5px;line-height:1.85;color:var(--c-text-2)}
@media(max-width:991px){.section{padding:56px 0}.section-tight{padding:44px 0}}

/* ---------- Layout ---------- */
.cat-layout{display:grid;grid-template-columns:1fr;gap:28px}
@media(min-width:992px){
  .cat-layout{grid-template-columns:268px minmax(0,1fr);gap:40px;align-items:start}
  .anchor-col{position:sticky;top:92px}
}

/* ---------- Anchor nav ---------- */
.anchor-card{
  background:var(--c-panel);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:20px 18px;box-shadow:var(--shadow-card);
}
.anchor-title{
  font-size:12px;letter-spacing:1.5px;color:var(--c-muted);font-weight:700;
  margin:0 0 14px;text-transform:uppercase;
}
.anchor-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:2px}
.anchor-list a{
  display:block;padding:10px 12px;font-size:14.5px;color:var(--c-text-2);
  border-left:2px solid transparent;border-radius:0 8px 8px 0;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.anchor-list a:hover{color:var(--c-text);background:rgba(127,168,255,.07)}
.anchor-list a.active{
  color:var(--c-brand-2);border-left-color:var(--c-cyan);background:rgba(47,107,255,.1);
  box-shadow:-2px 0 12px -4px rgba(31,224,196,.85);
}
.anchor-note{margin:16px 0 0;font-size:12.5px;line-height:1.8;color:var(--c-muted);border-top:1px solid var(--c-line);padding-top:14px}
@media(max-width:991px){
  .anchor-list{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:6px;-webkit-overflow-scrolling:touch;scrollbar-width:thin}
  .anchor-list li{flex:0 0 auto}
  .anchor-list a{
    white-space:nowrap;border-left:0;border:1px solid var(--c-line);border-radius:999px;padding:7px 14px;font-size:13.5px;
  }
  .anchor-list a.active{
    border-color:rgba(31,224,196,.5);background:rgba(31,224,196,.1);color:var(--c-cyan);box-shadow:none;
  }
}

/* ---------- FAQ accordion ---------- */
.faq-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:18px}
.faq-head h2{font-size:clamp(22px,3vw,30px);font-weight:700;margin:0;line-height:1.3}
.faq-head span{font-size:13px;color:var(--c-muted)}
.faq-acc{border-top:1px solid var(--c-line)}
.faq-acc .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--c-line)}
.faq-acc .accordion-header{margin:0}
.faq-acc .accordion-button{
  background:transparent;color:var(--c-text);font-size:16.5px;font-weight:700;line-height:1.55;
  padding:20px 48px 20px 16px;border-radius:0;box-shadow:none;
  transition:color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-acc .accordion-button:hover{color:var(--c-brand-2);background:rgba(127,168,255,.045)}
.faq-acc .accordion-button:not(.collapsed){
  color:var(--c-text);background:rgba(31,224,196,.05);box-shadow:inset 2px 0 0 0 var(--c-cyan);
}
.faq-acc .accordion-button:focus,.faq-acc .accordion-button:focus-visible{box-shadow:inset 2px 0 0 0 var(--c-cyan);outline:2px solid var(--c-cyan);outline-offset:-2px}
.faq-acc .accordion-button::after{
  background-image:none;content:"+";width:24px;height:24px;
  display:flex;align-items:center;justify-content:center;
  font-size:22px;font-weight:400;line-height:1;color:var(--c-brand-2);
  transform:rotate(0deg);transition:transform .2s var(--ease),color .2s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--c-cyan)}
.faq-acc .accordion-body{
  padding:2px 48px 26px 16px;color:var(--c-text-2);font-size:15px;line-height:1.9;max-width:72ch;
}
.faq-acc .accordion-body strong{color:var(--c-text)}
@media(max-width:575px){
  .faq-acc .accordion-button{font-size:15.5px;padding:17px 42px 17px 14px}
  .faq-acc .accordion-body{padding:2px 18px 22px 14px;font-size:14.5px}
}

/* ---------- Safety card ---------- */
.safety-card{
  margin-top:26px;display:flex;gap:14px;padding:20px 22px;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(58,30,16,.62),rgba(12,16,28,.94));
  border:1px solid rgba(255,122,60,.45);
  box-shadow:0 16px 36px -22px rgba(255,122,60,.55);
}
.safety-card i{color:var(--c-hot);font-size:19px;line-height:1.5;flex:0 0 auto;margin-top:2px}
.safety-card h3{font-size:15.5px;margin:0 0 6px;color:#FFC7A6;font-weight:700}
.safety-card p{margin:0;font-size:14px;line-height:1.85;color:var(--c-text-2)}
@media(max-width:575px){.safety-card{padding:18px 18px}}

/* ---------- Self check ---------- */
.selfcheck-grid{display:grid;grid-template-columns:1fr;gap:30px;align-items:center}
@media(min-width:768px){.selfcheck-grid{grid-template-columns:1fr 1fr;gap:44px}}
.selfcheck-media{margin:0;position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--shadow-card)}
.selfcheck-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0}
.selfcheck-media figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:10px 14px;font-size:12px;color:var(--c-text-2);
  background:linear-gradient(180deg,transparent,rgba(5,8,16,.88));
}
.check-list{list-style:none;padding:0;margin:22px 0 28px;display:grid;gap:14px}
.check-list li{display:flex;gap:12px;font-size:15px;line-height:1.85;color:var(--c-text-2)}
.check-list li i{color:var(--c-cyan);font-size:14px;margin-top:5px;flex:0 0 auto}
.check-list li strong{color:var(--c-text);font-weight:700}

/* ---------- CTA bar ---------- */
.cta-bar{
  display:flex;flex-direction:column;gap:20px;padding:30px 28px;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(20,34,64,.72),rgba(10,18,34,.55));
  backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--c-line);box-shadow:var(--shadow-card);
  position:relative;overflow:hidden;
}
.cta-bar::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(127,168,255,.8),rgba(31,224,196,.8),transparent);
}
.cta-bar h2{font-size:clamp(20px,2.6vw,26px);margin:0 0 8px;font-weight:700;line-height:1.35}
.cta-bar p{margin:0;font-size:14.5px;line-height:1.8;color:var(--c-text-2);max-width:56ch}
@media(min-width:768px){
  .cta-bar{flex-direction:row;align-items:center;justify-content:space-between;gap:32px}
  .cta-bar .btn-primary-brand{flex:0 0 auto}
}
@media(max-width:575px){.cta-bar{padding:24px 20px}.cta-bar .btn-primary-brand{width:100%}}

/* ---------- Footer ---------- */
.site-footer{background:#050810;border-top:1px solid var(--c-line);padding:56px 0 0;margin-top:48px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}}
.footer-brand p{font-size:14px;color:var(--c-text-2);line-height:1.85;margin:14px 0 0;max-width:34ch}
.footer-col h4{font-size:14px;color:var(--c-text);margin:0 0 14px;font-weight:700;letter-spacing:.5px}
.footer-col ul{list-style:none;padding:0;display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--c-text-2);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--c-brand-2)}
.footer-contact{font-size:13.5px;color:var(--c-muted);line-height:2}
.footer-bottom{
  margin-top:44px;padding:18px 0 22px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
  font-size:13px;color:var(--c-muted);
}

/* ---------- Back top ---------- */
.back-top{
  position:fixed;right:16px;bottom:82px;z-index:1035;width:44px;height:44px;border-radius:50%;
  display:none;align-items:center;justify-content:center;
  background:rgba(14,24,48,.92);border:1px solid var(--c-line);color:var(--c-brand-2);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.back-top.show{display:flex}
.back-top:hover{border-color:var(--c-line-strong);color:#fff;transform:translateY(-1px)}
@media(min-width:768px){.back-top{bottom:24px;right:24px}}

/* ---------- Bootstrap overrides ---------- */
.btn{border-radius:var(--r-btn)}
.card{background:var(--c-panel);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--shadow-card);color:var(--c-text)}
.form-control,.form-select{
  background:rgba(255,255,255,.03);border:1px solid var(--c-line);border-radius:12px;color:var(--c-text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.form-control:focus,.form-select:focus{
  background:rgba(255,255,255,.05);border-color:var(--c-brand);color:var(--c-text);
  box-shadow:0 0 0 3px rgba(47,107,255,.22);
}
.table{--bs-table-bg:transparent;color:var(--c-text);border-color:var(--c-line)}
.badge{border-radius:6px;letter-spacing:.5px}
.accordion{--bs-accordion-border-width:0}

/* ---------- Motion ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .45s var(--ease),transform .45s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{transition-duration:.01ms!important;animation-duration:.01ms!important}
}

/* roulang page: category4 */
:root{
  --c-bg:#070B16;
  --c-bg-2:#0A1224;
  --c-panel:#0E1830;
  --c-line:rgba(120,160,255,.16);
  --c-brand:#2F6BFF;
  --c-brand-2:#7FA8FF;
  --c-cyan:#1FE0C4;
  --c-hot:#FF7A3C;
  --c-text:#E8EEFF;
  --c-text-2:#A6B4D2;
  --c-muted:#6B7997;
  --glass:linear-gradient(160deg,rgba(20,34,64,.72),rgba(10,18,34,.55));
  --r-card:18px;
  --r-img:14px;
  --r-btn:12px;
  --shadow-card:0 18px 40px -18px rgba(0,0,0,.85),inset 0 1px 0 rgba(255,255,255,.06);
  --ease:cubic-bezier(.2,.7,.2,1);
  --mono:"JetBrains Mono","SFMono-Regular",Consolas,monospace;
  --cond:"Barlow Semi Condensed","PingFang SC","Noto Sans SC",sans-serif;

  --bs-body-bg:#070B16;
  --bs-body-color:#E8EEFF;
  --bs-primary:#2F6BFF;
  --bs-primary-rgb:47,107,255;
  --bs-link-color:#7FA8FF;
  --bs-link-hover-color:#1FE0C4;
  --bs-border-color:rgba(120,160,255,.16);
  --bs-border-radius:12px;
  --bs-card-bg:#0E1830;
  --bs-card-color:#E8EEFF;
  --bs-card-border-color:rgba(120,160,255,.16);
  --bs-card-border-radius:18px;
  --bs-card-cap-bg:transparent;
  --bs-accordion-bg:transparent;
  --bs-accordion-color:#E8EEFF;
  --bs-accordion-border-color:rgba(120,160,255,.16);
  --bs-accordion-btn-color:#E8EEFF;
  --bs-accordion-btn-bg:transparent;
  --bs-accordion-active-bg:transparent;
  --bs-accordion-active-color:#7FA8FF;
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-table-bg:transparent;
  --bs-table-color:#E8EEFF;
  --bs-table-border-color:rgba(120,160,255,.16);
  --bs-table-striped-bg:rgba(255,255,255,.02);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:15px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(900px 520px at 82% -10%,rgba(47,107,255,.16),transparent 62%),
    radial-gradient(680px 420px at 4% 8%,rgba(31,224,196,.07),transparent 66%);
}
img{max-width:100%;display:block}
a{color:var(--c-brand-2);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--c-cyan)}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-cyan);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px!important;margin:0 auto;padding-left:20px;padding-right:20px}
.section{padding:88px 0;position:relative;z-index:1}
.section--tight{padding:64px 0}
.section--alt{background:linear-gradient(180deg,rgba(10,18,36,.72),rgba(7,11,22,0))}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:11px;letter-spacing:1.6px;text-transform:uppercase;
  color:var(--c-cyan);margin-bottom:14px;
}
.kicker::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--c-cyan),transparent)}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:0;color:var(--c-text)}
h1{font-size:clamp(30px,5vw,52px);line-height:1.15;letter-spacing:-.5px}
h2{font-size:clamp(24px,3.2vw,36px);line-height:1.25}
h3{font-size:20px;line-height:1.4}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:36px}
.section-head p{margin:10px 0 0;color:var(--c-text-2);font-size:15.5px;max-width:64ch}
.text-mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.btn{transition:transform .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease)}
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border:none;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,#4A82FF,#2F6BFF 62%,#1D4FD8);
  box-shadow:0 8px 24px -8px rgba(47,107,255,.65),inset 0 1px 0 rgba(255,255,255,.28);
  text-decoration:none;cursor:pointer;
}
.btn-glow:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 12px 30px -8px rgba(47,107,255,.8),inset 0 1px 0 rgba(255,255,255,.3)}
.btn-glow:active{transform:translateY(0);filter:brightness(.95)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;color:var(--c-text);
  background:transparent;border:1px solid rgba(127,168,255,.42);
  text-decoration:none;cursor:pointer;
}
.btn-ghost:hover{color:var(--c-brand-2);background:rgba(47,107,255,.08);border-color:rgba(127,168,255,.75);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-glow:disabled,.btn-ghost:disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1050;
  background:rgba(8,13,26,.82);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--c-line);
}
.header-inner{display:flex;align-items:center;gap:28px;height:66px}
.logo{display:flex;flex-direction:column;line-height:1.12;text-decoration:none;flex-shrink:0}
.logo-main{font-family:var(--cond);font-size:21px;font-weight:700;letter-spacing:.5px;color:var(--c-text)}
.logo-sub{font-size:10.5px;letter-spacing:1.4px;color:var(--c-muted);margin-top:3px}
.logo:hover .logo-main{color:var(--c-brand-2)}
.nav-menu{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-menu a{
  position:relative;font-size:15px;font-weight:500;color:var(--c-text-2);
  padding:8px 0;text-decoration:none;transition:color .2s var(--ease);
}
.nav-menu a::after{
  content:"";position:absolute;left:50%;bottom:0;height:2px;width:0;
  background:linear-gradient(90deg,var(--c-brand),var(--c-cyan));
  transform:translateX(-50%);transition:width .2s var(--ease);border-radius:2px;
}
.nav-menu a:hover{color:var(--c-text)}
.nav-menu a:hover::after{width:100%}
.nav-menu a.active{color:var(--c-brand-2)}
.nav-menu a.active::after{width:100%;box-shadow:0 0 10px rgba(127,168,255,.75)}
.header-cta{
  display:inline-flex;align-items:center;justify-content:center;
  padding:9px 18px;border-radius:10px;font-size:14px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,#4A82FF,#2F6BFF 65%,#1D4FD8);
  box-shadow:0 6px 18px -8px rgba(47,107,255,.7),inset 0 1px 0 rgba(255,255,255,.26);
  text-decoration:none;white-space:nowrap;
}
.header-cta:hover{color:#fff;filter:brightness(1.07);transform:translateY(-1px)}
.header-cta:active{transform:translateY(0)}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:74px 0 66px;
  background-image:
    linear-gradient(90deg,#070B16 6%,rgba(7,11,22,.86) 46%,rgba(7,11,22,.42) 100%),
    url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:right center;
  border-bottom:1px solid var(--c-line);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(127,168,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(127,168,255,.06) 1px,transparent 1px);
  background-size:24px 24px;
  mask-image:linear-gradient(90deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(90deg,rgba(0,0,0,.9),transparent 78%);
  opacity:.7;
}
.page-hero .container{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--c-muted);margin-bottom:20px}
.crumb a{color:var(--c-text-2)}
.crumb a:hover{color:var(--c-brand-2)}
.crumb .sep{color:rgba(107,121,151,.7)}
.crumb .current{color:var(--c-brand-2)}
.page-hero h1{max-width:16em;margin-bottom:16px}
.page-hero .hero-desc{max-width:56ch;color:var(--c-text-2);font-size:15.5px;margin:0 0 26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-hint{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.4px;color:var(--c-brand-2);
  padding:5px 12px;border:1px solid rgba(127,168,255,.32);border-radius:6px;
  background:rgba(47,107,255,.08);
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
}
.tag--cyan{color:var(--c-cyan);border-color:rgba(31,224,196,.34);background:rgba(31,224,196,.08)}
.tag--muted{color:var(--c-muted);border-color:rgba(107,121,151,.32);background:rgba(107,121,151,.08)}

/* ---------- signup strip ---------- */
.signup-strip{position:relative;z-index:1;padding:0;margin-top:-1px}
.strip-inner{
  display:grid;grid-template-columns:1fr 1.15fr;gap:36px;align-items:center;
  padding:32px 34px;border-radius:var(--r-card);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--c-line);
  box-shadow:var(--shadow-card);
  position:relative;overflow:hidden;
}
.strip-inner::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(127,168,255,.85),rgba(31,224,196,.5),transparent);
  animation:pulseLine 5.5s linear infinite;
}
@keyframes pulseLine{0%{opacity:.35;transform:translateX(-30%)}50%{opacity:1;transform:translateX(10%)}100%{opacity:.35;transform:translateX(-30%)}}
.strip-text h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:10px}
.strip-text p{margin:0;color:var(--c-text-2);font-size:14.5px;max-width:46ch}
.strip-form{display:grid;grid-template-columns:1fr 1fr auto;gap:14px;align-items:end}
.field{display:flex;flex-direction:column;gap:7px}
.field label{font-size:13px;color:var(--c-text-2);font-weight:600}
.field .req{color:var(--c-hot);margin-left:2px}
.form-control{
  width:100%;padding:11px 14px;font-size:14.5px;color:var(--c-text);
  background:rgba(255,255,255,.03);
  border:1px solid var(--c-line);border-radius:var(--r-btn);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.form-control::placeholder{color:rgba(107,121,151,.85)}
.form-control:focus{
  outline:none;background:rgba(255,255,255,.05);
  border-color:var(--c-brand);
  box-shadow:0 0 0 3px rgba(47,107,255,.22);
  color:var(--c-text);
}
.form-control.is-invalid{border-color:rgba(255,122,60,.75);box-shadow:0 0 0 3px rgba(255,122,60,.16)}
.form-msg{grid-column:1/-1;margin:0;font-size:13px;min-height:0}
.form-msg.error{color:#FFB28C}
.form-msg.success{
  color:var(--c-text);
  padding:10px 14px;border-radius:10px;
  background:rgba(31,224,196,.08);border:1px solid rgba(31,224,196,.24);
  box-shadow:inset 3px 0 0 var(--c-cyan);
}

/* ---------- notice timeline ---------- */
.notice-list{display:flex;flex-direction:column;gap:14px}
.notice-row{
  display:grid;grid-template-columns:96px 1fr auto;gap:22px;align-items:center;
  padding:20px 24px;border-radius:16px;
  background:var(--c-panel);border:1px solid var(--c-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.notice-row:hover{border-color:rgba(127,168,255,.45);transform:translateY(-1px);box-shadow:0 14px 30px -20px rgba(0,0,0,.9),inset 0 1px 0 rgba(255,255,255,.06)}
.notice-date{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:10px 6px;border-radius:12px;
  background:linear-gradient(160deg,rgba(20,34,64,.85),rgba(10,18,34,.6));
  border:1px solid var(--c-line);
}
.notice-date .day{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:26px;font-weight:600;line-height:1;color:var(--c-text)}
.notice-date .mon{font-size:11px;color:var(--c-muted);letter-spacing:1px;margin-top:6px}
.notice-body h3{font-size:17.5px;margin-bottom:4px}
.notice-body p{margin:0;font-size:14px;color:var(--c-text-2);line-height:1.7;max-width:62ch}
.badge-status{
  display:inline-flex;align-items:center;gap:6px;white-space:nowrap;
  font-size:11.5px;font-weight:700;letter-spacing:.6px;
  padding:6px 13px;border-radius:6px;
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
}
.badge-on{color:#08221E;background:var(--c-cyan)}
.badge-soon{color:#F2F6FF;background:rgba(47,107,255,.85)}
.badge-end{color:#C7D0E4;background:rgba(107,121,151,.28);border:1px solid rgba(107,121,151,.4)}

/* ---------- info split ---------- */
.info-split{display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:center}
.info-card{
  padding:30px 30px 26px;border-radius:var(--r-card);
  background:var(--c-panel);border:1px solid var(--c-line);
  box-shadow:var(--shadow-card);
}
.info-card h2{margin-bottom:12px}
.info-card > p{color:var(--c-text-2);margin:0 0 20px;font-size:15px}
.check-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px}
.check-list li{position:relative;padding-left:26px;font-size:14.5px;color:var(--c-text-2);line-height:1.75}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:var(--c-cyan);box-shadow:0 0 0 4px rgba(31,224,196,.16);
}
.check-list li b{color:var(--c-text);font-weight:700}
.figure-card{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);
  background:var(--c-panel);box-shadow:var(--shadow-card);margin:0;
}
.figure-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0}
.figure-card figcaption{padding:14px 18px;font-size:12.5px;color:var(--c-muted);text-align:center}

/* ---------- compare ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-col{
  position:relative;border-radius:var(--r-card);padding:26px 26px 24px;
  background:var(--c-panel);border:1px solid var(--c-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
}
.compare-col.is-featured{background:linear-gradient(180deg,rgba(47,107,255,.12),rgba(14,24,48,.9));border-color:rgba(127,168,255,.42)}
.compare-col.is-featured::before{
  content:"";position:absolute;left:22px;right:22px;top:-1px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-brand),var(--c-cyan));
}
.compare-head h3{font-size:19px;margin-bottom:6px}
.compare-head p{margin:0 0 18px;font-size:13.5px;color:var(--c-muted)}
.compare-list{list-style:none;margin:0;padding:0}
.compare-list li{
  display:flex;justify-content:space-between;gap:16px;
  padding:12px 0;border-top:1px solid rgba(120,160,255,.12);
  font-size:14px;color:var(--c-text-2);
}
.compare-list li span{color:var(--c-muted);flex-shrink:0}
.compare-list li b{color:var(--c-text);font-weight:600;text-align:right}

/* ---------- faq ---------- */
.faq-acc .accordion-item{
  background:transparent;border:none;border-bottom:1px solid var(--c-line);
}
.faq-acc .accordion-item:first-of-type{border-top:1px solid var(--c-line)}
.faq-acc .accordion-button{
  background:transparent;color:var(--c-text);
  font-size:16.5px;font-weight:700;line-height:1.6;
  padding:22px 46px 22px 16px;border-radius:0;
  box-shadow:none;
  transition:color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.faq-acc .accordion-button:hover{color:var(--c-brand-2);background:rgba(47,107,255,.04)}
.faq-acc .accordion-button:not(.collapsed){
  color:var(--c-brand-2);background:rgba(47,107,255,.05);
  box-shadow:inset 2px 0 0 var(--c-cyan);
}
.faq-acc .accordion-button::after{
  content:"+";background-image:none;width:auto;height:auto;
  font-family:var(--mono);font-size:20px;line-height:1;color:var(--c-brand-2);
  display:flex;align-items:center;justify-content:center;margin-left:auto;
  transform:none;transition:transform .2s var(--ease),color .2s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--c-cyan)}
.faq-acc .accordion-body{
  padding:0 46px 24px 18px;color:var(--c-text-2);font-size:15px;line-height:1.85;max-width:72ch;
}

/* ---------- cta band ---------- */
.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
  padding:30px 34px;border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid rgba(127,168,255,.28);
  box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:8px}
.cta-band p{margin:0;color:var(--c-text-2);font-size:14.5px}

/* ---------- footer ---------- */
.site-footer{
  position:relative;z-index:1;margin-top:20px;
  background:#050810;border-top:1px solid var(--c-line);
  padding:64px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px}
.footer-brand p{margin:16px 0 0;color:var(--c-muted);font-size:13.5px;line-height:1.8;max-width:34ch}
.footer-col h4{font-size:14px;margin-bottom:16px;color:var(--c-text);letter-spacing:.4px}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:13.5px;color:var(--c-text-2)}
.footer-col a:hover{color:var(--c-brand-2)}
.footer-contact{font-size:13px;color:var(--c-muted);line-height:2}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(120,160,255,.1);
  font-size:12.5px;color:var(--c-muted);
}

/* ---------- mobile tab & to top ---------- */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;display:none;
  height:calc(60px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(8,13,26,.94);
  backdrop-filter:blur(16px) saturate(120%);
  -webkit-backdrop-filter:blur(16px) saturate(120%);
  border-top:1px solid var(--c-line);
}
.mobile-tab a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--c-muted);position:relative;text-decoration:none;
  transition:color .2s var(--ease);
}
.mobile-tab a svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.mobile-tab a.active{color:var(--c-brand-2)}
.mobile-tab a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:3px;border-radius:0 0 3px 3px;
  background:var(--c-brand-2);box-shadow:0 0 12px rgba(127,168,255,.85);
}
.to-top{
  position:fixed;right:18px;bottom:22px;z-index:1035;
  width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(14,24,48,.9);border:1px solid rgba(127,168,255,.35);
  color:var(--c-brand-2);font-size:18px;cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease),border-color .2s var(--ease);
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:var(--c-cyan);color:var(--c-cyan)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .section{padding:78px 0}
  .notice-row{grid-template-columns:88px 1fr auto;gap:18px}
}
@media (max-width:991.98px){
  .nav-menu{display:none}
  .header-inner{height:62px;justify-content:space-between}
  .header-cta{margin-left:auto}
  .mobile-tab{display:flex}
  body{padding-bottom:calc(64px + env(safe-area-inset-bottom))}
  .to-top{bottom:calc(74px + env(safe-area-inset-bottom))}
  .section{padding:70px 0}
  .strip-inner{grid-template-columns:1fr;gap:24px;padding:26px 24px}
  .strip-form{grid-template-columns:1fr 1fr;gap:12px}
  .strip-form .btn-glow{grid-column:1/-1;width:100%}
  .info-split{grid-template-columns:1fr;gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .page-hero{padding:56px 0 52px}
}
@media (max-width:767.98px){
  .page-hero h1{max-width:none}
  .notice-row{grid-template-columns:80px 1fr;gap:14px 16px;padding:18px}
  .notice-status{grid-column:2;justify-self:start}
  .compare-grid{grid-template-columns:1fr}
  .cta-band{padding:24px}
  .cta-band .btn-glow{width:100%}
  .faq-acc .accordion-button{padding:18px 40px 18px 14px;font-size:15.5px}
  .faq-acc .accordion-body{padding:0 24px 20px 16px}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px}
  .section{padding:58px 0}
  .section-head{margin-bottom:26px}
  .strip-form{grid-template-columns:1fr}
  .notice-date .day{font-size:22px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:6px}
  .hero-actions .btn-glow,.hero-actions .btn-ghost{width:100%}
  .info-card{padding:24px 20px}
  .compare-col{padding:22px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
  .strip-inner::before{animation:none;opacity:.6}
}