/* roulang page: index */
:root{
  --ink-900:#0B1224;
  --ink-800:#131C31;
  --brand-600:#1F5FD0;
  --brand-700:#174BAD;
  --brand-050:#EAF1FE;
  --neon-400:#2EE6C8;
  --amber-500:#FF9F2E;
  --bg:#F5F8FD;
  --surface:#FFFFFF;
  --line:#E2E9F5;
  --text-900:#101A2E;
  --text-600:#4A5876;
  --text-400:#8A97AF;
  --ok:#1FA97A;
  --err:#D9484B;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --sh:0 8px 24px rgba(16,26,46,.08);
  --sh-hover:0 14px 36px rgba(16,26,46,.14);
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:32px;
  --sp-5:48px;
  --sp-6:64px;
  --sp-7:96px;
  --ease:220ms cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--text-900);font-weight:700;letter-spacing:-.01em;line-height:1.35}
p{margin:0}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand-700)}
img{max-width:100%;display:block;border-radius:var(--r-img);background:var(--brand-050)}
button{font-family:inherit}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--neon-400);outline-offset:2px}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 var(--sp-3);
}
.section{padding:var(--sp-6) 0}
.section.tight{padding:var(--sp-5) 0}
.section.alt{background:#fff}
.eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.12em;
  color:var(--brand-600);
  font-weight:600;
  margin-bottom:10px;
}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:var(--sp-3);
  margin-bottom:var(--sp-4);
  flex-wrap:wrap;
}
.sec-head h2{font-size:clamp(22px,2.4vw,30px)}
.sec-head p{font-size:14px;color:var(--text-400);margin-top:8px;max-width:640px}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--brand-600);
  white-space:nowrap;
}
.link-arrow span{transition:transform var(--ease)}
.link-arrow:hover span{transform:translateX(4px)}

/* ============ header ============ */
.topbar{
  background:var(--ink-900);
  color:rgba(255,255,255,.62);
  font-size:13px;
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:36px;
  gap:var(--sp-2);
}
.topbar-left{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:0;
}
.topbar-line{
  width:3px;
  height:14px;
  background:var(--neon-400);
  border-radius:2px;
  box-shadow:0 0 10px rgba(46,230,200,.6);
  flex:none;
}
.topbar-left span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{white-space:nowrap;color:rgba(255,255,255,.45)}

.site-header{
  background:var(--ink-900);
  position:sticky;
  top:0;
  z-index:60;
  border-bottom:2px solid transparent;
  border-image:linear-gradient(90deg,var(--neon-400),var(--brand-600),rgba(31,95,208,0)) 1;
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-3);
  height:72px;
}
.logo{
  display:flex;
  align-items:center;
  gap:12px;
  color:#fff;
  flex:none;
}
.logo:hover{color:#fff}
.logo-mark{
  width:38px;height:38px;
  border-radius:10px;
  background:linear-gradient(140deg,var(--brand-600),#0A2B69);
  position:relative;
  flex:none;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.12);
}
.logo-mark::before{
  content:"";position:absolute;inset:9px;
  border:2px solid var(--neon-400);
  border-radius:4px;
  transform:rotate(45deg);
}
.logo-mark::after{
  content:"";position:absolute;left:50%;top:50%;
  width:6px;height:6px;margin:-3px 0 0 -3px;
  background:#fff;border-radius:2px;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-main{font-size:17px;font-weight:700;letter-spacing:.02em;color:#fff}
.logo-sub{font-size:11px;color:rgba(255,255,255,.56);letter-spacing:.22em}

.nav-menu{display:flex;align-items:center;gap:6px}
.nav-menu a{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  font-size:15px;
  color:rgba(255,255,255,.72);
  border-radius:8px;
  transition:color var(--ease),background var(--ease);
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--neon-400);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--ease);
}
.nav-menu a:hover{color:#fff;background:rgba(255,255,255,.05)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.active{
  color:#fff;
  text-shadow:0 0 12px rgba(46,230,200,.55);
}
.nav-menu a.active::after{width:12px;transform:scaleX(1);left:12px;right:auto}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-btn);
  border:1.5px solid transparent;
  cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--brand-600);color:#fff}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-hover)}
.btn-outline{background:#fff;color:var(--brand-600);border-color:var(--brand-600)}
.btn-outline:hover{background:var(--brand-050);color:var(--brand-700);transform:translateY(-1px);box-shadow:var(--sh)}
.btn-neon{background:var(--neon-400);color:var(--ink-900)}
.btn-neon:hover{background:#4DF0D6;color:var(--ink-900);box-shadow:0 0 18px rgba(46,230,200,.45);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.7)}
.btn-amber{background:var(--amber-500);color:var(--ink-900)}
.btn-amber:hover{background:#FFB457;color:var(--ink-900);transform:translateY(-1px);box-shadow:0 10px 26px rgba(255,159,46,.35)}
.btn-block{width:100%;height:48px}
.btn:disabled,.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid rgba(255,255,255,.18);
  background:transparent;
  border-radius:10px;
  cursor:pointer;
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;top:50%;
  width:18px;height:2px;
  margin-left:-9px;margin-top:-1px;
  background:#fff;
  border-radius:2px;
  content:"";
  transition:transform var(--ease),opacity var(--ease);
}
.nav-toggle span::before{transform:translateY(-6px)}
.nav-toggle span::after{transform:translateY(6px)}
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(11,18,36,.6);
  opacity:0;pointer-events:none;
  transition:opacity var(--ease);
  z-index:70;
}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;
  top:0;right:0;
  width:82%;
  max-width:320px;
  height:100%;
  background:var(--ink-900);
  z-index:80;
  transform:translateX(100%);
  transition:transform var(--ease);
  display:flex;
  flex-direction:column;
  padding:var(--sp-2) 0 var(--sp-3);
}
.drawer.open{transform:translateX(0)}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:0 var(--sp-3) var(--sp-2);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.drawer-head strong{color:#fff;font-size:15px}
.drawer-close{
  width:36px;height:36px;border-radius:8px;
  background:rgba(255,255,255,.06);
  border:none;color:#fff;font-size:20px;line-height:1;cursor:pointer;
}
.drawer nav{flex:1;overflow:auto;padding:var(--sp-1) 0}
.drawer nav a{
  display:flex;align-items:center;
  height:52px;
  padding:0 var(--sp-3);
  color:rgba(255,255,255,.78);
  font-size:15px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.drawer nav a.active{color:#fff;background:rgba(46,230,200,.08);box-shadow:inset 3px 0 0 var(--neon-400)}
.drawer-foot{padding:var(--sp-2) var(--sp-3) 0;border-top:1px solid rgba(255,255,255,.08)}

/* ============ hero ============ */
.hero{
  position:relative;
  background:linear-gradient(180deg,var(--bg) 0%,#FFFFFF 100%);
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  width:720px;height:720px;
  right:-180px;top:-260px;
  background:radial-gradient(circle,rgba(31,95,208,.16),rgba(31,95,208,0) 62%);
  pointer-events:none;
}
.hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:var(--sp-4);
  align-items:center;
  padding:var(--sp-6) 0;
  min-height:560px;
}
.hero-copy{grid-column:span 6}
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
  color:var(--brand-600);
  background:var(--brand-050);
  border-radius:999px;
}
.badge-amber{color:#8A4B00;background:rgba(255,159,46,.16)}
.hero h1{
  margin:var(--sp-2) 0 0;
  font-size:clamp(30px,3.4vw,44px);
  line-height:1.28;
  letter-spacing:-.02em;
}
.hero-sub{
  margin-top:var(--sp-2);
  font-size:17px;
  color:var(--text-600);
}
.hero-actions{
  display:flex;
  gap:12px;
  margin-top:var(--sp-3);
  flex-wrap:wrap;
}
.trust-row{
  display:flex;
  gap:var(--sp-3);
  margin-top:var(--sp-4);
  flex-wrap:wrap;
}
.trust-item{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-600);
}
.trust-item svg{width:20px;height:20px;flex:none;color:var(--brand-600)}
.hero-visual{grid-column:span 6;position:relative}
.hero-visual img{
  width:100%;
  height:420px;
  object-fit:cover;
  border-radius:var(--r-card);
  box-shadow:var(--sh);
}
.hero-card{
  position:absolute;
  left:-24px;
  top:28px;
  width:244px;
  background:rgba(255,255,255,.94);
  border:1px solid var(--line);
  border-radius:14px;
  padding:16px 18px;
  box-shadow:var(--sh);
}
.hero-card strong{display:block;font-size:13px;color:var(--text-400);font-weight:600;letter-spacing:.06em}
.hero-card .kpi{font-size:26px;font-weight:700;color:var(--text-900);line-height:1.3}
.hero-card .kpi small{font-size:13px;color:var(--text-400);font-weight:500;margin-left:4px}
.hero-card hr{border:none;border-top:1px solid var(--line);margin:12px 0}

/* ============ ladder ============ */
.ladder-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:var(--sp-3);
  align-items:start;
}
.ladder-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:var(--sp-3);
  box-shadow:var(--sh);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.ladder-card:nth-child(1){margin-top:32px}
.ladder-card:nth-child(2){margin-top:24px}
.ladder-card:nth-child(3){margin-top:16px}
.ladder-card:nth-child(4){margin-top:8px;border-left:3px solid var(--neon-400)}
.ladder-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--brand-050)}
.ladder-num{
  font-size:40px;
  font-weight:700;
  line-height:1;
  color:var(--brand-050);
  letter-spacing:-.03em;
}
.ladder-card h3{margin-top:12px;font-size:18px}
.ladder-limit{font-size:14px;color:var(--text-400);margin-top:6px}
.ladder-list{margin-top:var(--sp-2);display:grid;gap:8px}
.ladder-list li{
  position:relative;
  padding-left:14px;
  font-size:14px;
  color:var(--text-600);
}
.ladder-list li::before{
  content:"";
  position:absolute;left:0;top:10px;
  width:6px;height:6px;border-radius:50%;
  background:var(--brand-600);
}
.ladder-card .link-arrow{margin-top:var(--sp-2);font-size:14px}
.ladder-tag{
  position:absolute;
  right:var(--sp-3);top:calc(var(--sp-3) - 4px);
  height:24px;display:inline-flex;align-items:center;
  padding:0 10px;
  font-size:12px;font-weight:600;
  border-radius:999px;
  color:#0B6B58;background:rgba(46,230,200,.18);
}

/* ============ table ============ */
.table-wrap{position:relative}
.table-scroll{
  overflow-x:auto;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--surface);
  box-shadow:var(--sh);
}
table.compare{
  width:100%;
  min-width:720px;
  border-collapse:collapse;
  font-size:15px;
}
table.compare th,
table.compare td{
  padding:16px 18px;
  text-align:center;
  border-bottom:1px solid var(--line);
}
table.compare thead th{
  background:var(--ink-900);
  color:#fff;
  font-weight:600;
  font-size:15px;
  position:relative;
  border-bottom:none;
}
table.compare thead th:first-child{text-align:left;color:rgba(255,255,255,.7);font-weight:500}
table.compare thead th.recommend{background:var(--ink-800)}
table.compare td:first-child{
  text-align:left;
  color:var(--text-400);
  background:#FAFCFF;
  font-weight:500;
}
table.compare tbody tr:nth-child(even) td{background:#FAFCFF}
table.compare tbody tr:nth-child(even) td:first-child{background:#F4F8FE}
table.compare tbody tr:last-child td{border-bottom:none}
td.recommend-col{background:var(--brand-050)!important}
.compare-note{font-size:14px;color:var(--text-400);margin-top:12px}
.icon-yes{display:inline-flex;width:22px;height:22px;color:var(--ok)}
.icon-no{display:inline-block;width:14px;height:2px;background:var(--text-400);border-radius:2px;vertical-align:middle}
.col-flag{
  position:absolute;
  top:-14px;left:50%;
  transform:translateX(-50%);
  height:24px;
  display:inline-flex;align-items:center;
  padding:0 12px;
  font-size:12px;font-weight:700;
  color:#3A2100;
  background:var(--amber-500);
  border-radius:999px;
  white-space:nowrap;
}

/* ============ countdown strip ============ */
.promo-strip{
  background:var(--ink-900);
  border:1px solid var(--neon-400);
  border-radius:var(--r-card);
  padding:var(--sp-3) var(--sp-4);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-3);
  min-height:110px;
  position:relative;
  overflow:hidden;
}
.promo-strip::after{
  content:"";
  position:absolute;right:-60px;bottom:-80px;
  width:260px;height:260px;
  background:radial-gradient(circle,rgba(46,230,200,.18),rgba(46,230,200,0) 65%);
}
.promo-text{position:relative;z-index:1}
.promo-text h2{color:#fff;font-size:clamp(20px,2vw,26px)}
.promo-text p{color:rgba(255,255,255,.66);font-size:14px;margin-top:6px}
.promo-mid{
  display:flex;align-items:center;gap:10px;
  position:relative;z-index:1;
}
.time-block{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:8px;
  background:#060C1A;
  border:1px solid rgba(255,255,255,.12);
  color:var(--neon-400);
  font-size:18px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.time-sep{color:rgba(255,255,255,.4);font-weight:700}
.promo-strip .btn{position:relative;z-index:1}

/* ============ news / cms ============ */
.news-layout{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:var(--sp-3);
}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh);
  transition:box-shadow var(--ease),border-color var(--ease),transform var(--ease);
}
.card:hover{box-shadow:var(--sh-hover);border-color:var(--brand-050)}
.news-lead{
  display:grid;
  grid-template-columns:1fr;
  overflow:hidden;
}
.news-lead-media{display:block;overflow:hidden;border-radius:var(--r-card) var(--r-card) 0 0}
.news-lead-media img{
  width:100%;height:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:0;
  transition:transform var(--ease);
}
.news-lead-media:hover img{transform:scale(1.03)}
.news-lead-body{padding:var(--sp-3)}
.news-lead-body h3{margin-top:12px;font-size:20px}
.news-lead-body h3 a{color:var(--text-900)}
.news-lead-body h3 a:hover{color:var(--brand-700)}
.news-lead-body p{
  margin-top:10px;
  font-size:14px;
  color:var(--text-600);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:var(--sp-2);
  align-content:start;
}
.news-card{overflow:hidden;display:flex;flex-direction:column}
.news-card-media{display:block;overflow:hidden}
.news-card-media img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:0;
  transition:transform var(--ease);
}
.news-card-media:hover img{transform:scale(1.03)}
.news-card-body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:8px;flex:1}
.news-card-body h3{
  font-size:15px;
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card-body h3 a{color:var(--text-900)}
.news-card-body h3 a:hover{color:var(--brand-700)}
.news-card-body p{
  font-size:13px;
  color:var(--text-400);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.meta-row{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-400);
  margin-top:auto;
}
.meta-row svg{width:14px;height:14px;flex:none}
.meta-row .arrow{margin-left:auto;color:var(--brand-600);font-weight:700}
.empty-state{
  min-height:280px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:12px;
  text-align:center;
  background:var(--surface);
  border:1px dashed var(--line);
  border-radius:var(--r-card);
  padding:var(--sp-4);
}
.empty-state svg{width:48px;height:48px;color:var(--text-400)}
.empty-state p{font-size:14px;color:var(--text-400)}

/* ============ proof ============ */
.proof-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:var(--sp-3);
  margin-bottom:var(--sp-4);
}
.proof-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:var(--sp-3);
  box-shadow:var(--sh);
}
.proof-card .num{
  font-size:32px;
  font-weight:700;
  color:var(--brand-600);
  line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.proof-card .lab{font-size:12px;color:var(--text-400);margin-top:6px;letter-spacing:.04em}
.proof-card .desc{font-size:14px;color:var(--text-600);margin-top:10px}
.proof-body{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--sp-3);
}
.proof-item{
  display:flex;
  gap:12px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:var(--sp-3);
}
.proof-item svg{width:24px;height:24px;color:var(--brand-600);flex:none;margin-top:2px}
.proof-item h3{font-size:16px}
.proof-item p{font-size:14px;color:var(--text-600);margin-top:6px}

/* ============ form ============ */
.contact-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:var(--sp-5);
  align-items:start;
}
.contact-info h2{font-size:clamp(22px,2.4vw,30px)}
.contact-info > p{font-size:14px;color:var(--text-400);margin-top:10px}
.notice-list{margin-top:var(--sp-3);display:grid;gap:12px}
.notice-list li{
  position:relative;
  padding-left:16px;
  font-size:14px;
  color:var(--text-600);
}
.notice-list li::before{
  content:"";
  position:absolute;left:0;top:11px;
  width:6px;height:6px;border-radius:50%;
  background:var(--brand-600);
}
.contact-block{
  margin-top:var(--sp-4);
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:var(--sp-3);
  display:grid;
  gap:14px;
  box-shadow:var(--sh);
}
.contact-line{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-600)}
.contact-line svg{width:18px;height:18px;color:var(--brand-600);flex:none}
.form-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:24px;
  padding:var(--sp-4);
  box-shadow:var(--sh-hover);
}
.form-card h3{font-size:19px}
.form-card > p{font-size:14px;color:var(--text-400);margin-top:8px}
.form-grid{display:grid;gap:18px;margin-top:var(--sp-3)}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:14px;font-weight:600;color:var(--text-900)}
.field label .req{color:var(--err);margin-left:2px}
.field input,
.field textarea{
  width:100%;
  height:46px;
  padding:0 14px;
  font-size:15px;
  font-family:inherit;
  color:var(--text-900);
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field textarea{
  height:auto;
  min-height:112px;
  padding:12px 14px;
  line-height:1.7;
  resize:vertical;
}
.field input::placeholder,
.field textarea::placeholder{color:var(--text-400)}
.field input:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--brand-600);
  box-shadow:0 0 0 3px rgba(31,95,208,.15);
}
.field.error input,
.field.error textarea{
  border-color:var(--err);
  box-shadow:0 0 0 3px rgba(217,72,75,.12);
}
.err-msg{font-size:13px;color:var(--err);display:none}
.field.error .err-msg{display:block}
.chip-group{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 16px;
  font-size:14px;
  color:var(--text-600);
  background:#fff;
  border:1px solid var(--line);
  border-radius:999px;
  cursor:pointer;
  transition:all var(--ease);
}
.chip:hover{border-color:var(--brand-600);color:var(--brand-600)}
.chip.selected{background:var(--brand-600);color:#fff;border-color:var(--brand-600)}
.form-success{
  display:none;
  margin-top:16px;
  padding:12px 16px;
  font-size:14px;
  color:#0B6B58;
  background:rgba(31,169,122,.12);
  border:1px solid rgba(31,169,122,.3);
  border-radius:var(--r-btn);
}
.form-success.show{display:block}

/* ============ faq ============ */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;
  min-height:56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:14px 0;
  background:transparent;
  border:none;
  font-size:16px;
  font-weight:600;
  color:var(--text-900);
  text-align:left;
  cursor:pointer;
  transition:color var(--ease);
}
.faq-q:hover{color:var(--brand-700)}
.faq-icon{
  position:relative;
  width:16px;height:16px;flex:none;
  transition:transform var(--ease);
}
.faq-icon::before,
.faq-icon::after{
  content:"";position:absolute;left:0;top:7px;
  width:16px;height:2px;border-radius:2px;background:var(--brand-600);
}
.faq-icon::after{transform:rotate(90deg);transition:transform var(--ease)}
.faq-item.open .faq-icon{transform:rotate(180deg)}
.faq-item.open .faq-icon::after{transform:rotate(0deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height var(--ease)}
.faq-a p{font-size:15px;line-height:1.8;color:var(--text-600);padding:0 0 18px}

/* ============ cta band ============ */
.cta-band{
  background:linear-gradient(135deg,var(--brand-600),#123C8C);
  border-radius:var(--r-card);
  padding:var(--sp-5) var(--sp-4);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-3);
  flex-wrap:wrap;
  box-shadow:var(--sh);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,28px)}
.cta-band p{color:rgba(255,255,255,.78);font-size:14px;margin-top:8px}

/* ============ footer ============ */
.site-footer{
  background:var(--ink-900);
  color:rgba(255,255,255,.6);
  border-top:1px solid var(--neon-400);
  margin-top:var(--sp-6);
  padding-top:var(--sp-6);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:var(--sp-4);
  padding-bottom:var(--sp-5);
}
.footer-brand .logo{margin-bottom:var(--sp-2)}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);max-width:320px}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:#fff;
  margin-bottom:var(--sp-2);
  letter-spacing:.04em;
}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.6)}
.footer-col a:hover{color:var(--neon-400)}
.footer-col li{font-size:14px;color:rgba(255,255,255,.6)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:var(--sp-2) 0 var(--sp-3);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.42);
}

/* ============ responsive ============ */
@media (max-width:1279px){
  .container{padding:0 var(--sp-4)}
  .nav-menu a{padding:10px 9px;font-size:14px}
  .hero-card{left:0}
}
@media (max-width:1023px){
  .nav-menu,.nav-actions .btn-ghost{display:none}
  .nav-toggle{display:block}
  .hero-inner{min-height:auto;padding:var(--sp-5) 0}
  .hero-copy,.hero-visual{grid-column:span 12}
  .hero-visual img{height:340px}
  .hero-card{position:relative;left:0;top:0;width:100%;max-width:300px;margin-top:-56px;margin-left:var(--sp-2)}
  .ladder-grid{grid-template-columns:repeat(2,1fr)}
  .ladder-card:nth-child(n){margin-top:0}
  .news-layout{grid-template-columns:1fr}
  .proof-grid{grid-template-columns:repeat(2,1fr)}
  .proof-body{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr;gap:var(--sp-4)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .section{padding:var(--sp-5) 0}
  .topbar-right{display:none}
  .hero-visual img{height:240px}
  .hero-card{margin-top:-40px}
  .ladder-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .proof-grid{grid-template-columns:1fr 1fr}
  .promo-strip{flex-direction:column;align-items:flex-start}
  .promo-mid{order:3}
  .promo-strip .btn{width:100%}
  .cta-band{flex-direction:column;align-items:flex-start}
  .form-card{padding:var(--sp-3)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:var(--sp-3)}
  .table-wrap::after{
    content:"";
    position:absolute;top:0;right:0;
    width:48px;height:100%;
    background:linear-gradient(90deg,rgba(245,248,253,0),rgba(245,248,253,.95));
    border-radius:0 var(--r-card) var(--r-card) 0;
    pointer-events:none;
  }
}
@media (max-width:480px){
  .container{padding:0 18px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%;height:48px}
  .proof-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .btn{width:auto}
  .form-card .btn-block{width:100%}
}

/* roulang page: article */
:root{
  --ink-900:#0B1224;
  --ink-800:#131C31;
  --brand-600:#1F5FD0;
  --brand-700:#174BAD;
  --brand-050:#EAF1FE;
  --neon-400:#2EE6C8;
  --amber-500:#FF9F2E;
  --bg:#F5F8FD;
  --surface:#FFFFFF;
  --line:#E2E9F5;
  --text-900:#101A2E;
  --text-600:#4A5876;
  --text-400:#8A97AF;
  --ok:#1FA97A;
  --err:#D9484B;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-sm:0 8px 24px rgba(16,26,46,.08);
  --shadow-md:0 14px 36px rgba(16,26,46,.14);
  --space-1:8px;
  --space-2:16px;
  --space-3:24px;
  --space-4:32px;
  --space-5:48px;
  --space-6:64px;
  --space-7:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text-600);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--brand-700);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text-900);font-weight:700;letter-spacing:-.01em;line-height:1.35;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--ink-900);
  color:rgba(255,255,255,.62);
  font-size:13px;
  line-height:36px;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:36px;
}
.topbar-left{
  display:flex;
  align-items:center;
  gap:10px;
  position:relative;
  padding-left:14px;
}
.topbar-left::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:14px;
  background:var(--neon-400);
  border-radius:2px;
}
.topbar-right{display:flex;align-items:center;gap:18px;}
.topbar-right span{white-space:nowrap;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:70;
  background:var(--ink-900);
  box-shadow:0 6px 24px rgba(11,18,36,.28);
}
.site-header::after{
  content:"";
  display:block;
  height:2px;
  background:linear-gradient(90deg,var(--neon-400),rgba(31,95,208,.5) 45%,rgba(31,95,208,0));
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:72px;
}
.logo{
  display:flex;
  align-items:center;
  gap:12px;
  color:#fff;
  flex-shrink:0;
}
.logo:hover{color:#fff;}
.logo-mark{
  width:34px;height:34px;
  border-radius:9px;
  background:linear-gradient(135deg,var(--neon-400),var(--brand-600));
  position:relative;
  flex-shrink:0;
  box-shadow:0 0 18px rgba(46,230,200,.28);
}
.logo-mark::after{
  content:"";
  position:absolute;
  inset:9px;
  border:2px solid rgba(11,18,36,.85);
  border-radius:4px;
  transform:rotate(45deg);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-main{font-size:17px;font-weight:700;letter-spacing:.02em;color:#fff;}
.logo-sub{font-size:11px;color:rgba(255,255,255,.55);letter-spacing:.28em;}
.nav-menu{display:flex;align-items:center;gap:26px;}
.nav-menu a{
  position:relative;
  font-size:15px;
  color:rgba(255,255,255,.72);
  padding:6px 0;
  white-space:nowrap;
  transition:color .2s ease;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:0;bottom:-2px;
  width:0;height:2px;
  min-height:2px;
  background:var(--neon-400);
  border-radius:2px;
  transition:width .22s ease;
}
.nav-menu a:hover{color:#fff;}
.nav-menu a:hover::after{width:100%;}
.nav-menu a.active{color:#fff;text-shadow:0 0 14px rgba(46,230,200,.6);}
.nav-menu a.active::after{width:12px;}
.nav-menu a:focus-visible,
.logo:focus-visible,
.btn:focus-visible,
.nav-toggle:focus-visible{
  outline:2px solid var(--neon-400);
  outline-offset:3px;
  border-radius:6px;
}
.nav-actions{display:flex;align-items:center;gap:12px;}
.drawer-cta{display:none;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-sm);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-secondary{background:var(--surface);color:var(--brand-600);border-color:var(--brand-600);}
.btn-secondary:hover{background:var(--brand-050);color:var(--brand-700);border-color:var(--brand-700);transform:translateY(-1px);}
.btn-neon{background:var(--neon-400);color:var(--ink-900);}
.btn-neon:hover{background:#4cf0d6;color:var(--ink-900);transform:translateY(-1px);box-shadow:0 0 18px rgba(46,230,200,.45);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.3);}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.5);}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 面包屑 ---------- */
.page-main{padding:var(--space-5) 0 var(--space-6);}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:14px;
  color:var(--text-400);
  margin-bottom:var(--space-3);
}
.breadcrumb a{color:var(--text-400);}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb .sep{color:#C7D2E4;}
.breadcrumb .current{color:var(--text-600);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:var(--space-5);
  align-items:start;
}
.article-main{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  padding:var(--space-5);
  min-width:0;
}
.article-head{border-bottom:1px solid var(--line);padding-bottom:var(--space-3);margin-bottom:var(--space-3);}
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border-radius:999px;
  background:var(--brand-050);
  color:var(--brand-700);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
}
.article-title{
  font-size:clamp(26px,2.6vw,34px);
  margin:14px 0 16px;
  line-height:1.4;
  max-width:24em;
}
.article-meta{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  font-size:14px;
  color:var(--text-400);
}
.meta-sep{width:1px;height:12px;background:#D9E2F1;display:inline-block;}

/* ---------- 正文排版 ---------- */
.article-body{
  font-size:16px;
  line-height:1.9;
  color:var(--text-600);
  max-width:78ch;
}
.article-body > * + *{margin-top:1.2em;}
.article-body p{margin:0;}
.article-body h2{
  position:relative;
  font-size:22px;
  margin-top:2em;
  margin-bottom:.8em;
  padding-left:16px;
  line-height:1.5;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.28em;
  width:4px;height:1.05em;
  background:var(--brand-600);
  border-radius:2px;
}
.article-body h3{
  font-size:18px;
  font-weight:600;
  margin-top:1.6em;
  margin-bottom:.6em;
}
.article-body h4{
  font-size:16px;
  font-weight:600;
  margin-top:1.4em;
  margin-bottom:.5em;
}
.article-body ul,
.article-body ol{
  padding-left:1.4em;
  list-style:revert;
}
.article-body li{margin:.35em 0;line-height:1.8;}
.article-body ul li::marker{color:var(--brand-600);}
.article-body ol li::marker{color:var(--brand-600);font-weight:600;}
.article-body blockquote{
  margin:1.6em 0;
  padding:20px 22px;
  background:var(--brand-050);
  border-left:3px solid var(--neon-400);
  border-radius:0 12px 12px 0;
  color:var(--text-900);
  font-size:15.5px;
}
.article-body blockquote p + p{margin-top:.8em;}
.article-body img{
  margin:1.6em auto;
  border-radius:var(--radius-img);
  height:auto;
}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{
  font-size:13px;
  color:var(--text-400);
  text-align:center;
  margin-top:8px;
}
.article-body table{
  display:block;
  width:100%;
  overflow-x:auto;
  border-collapse:collapse;
  margin:1.6em 0;
  font-size:14.5px;
  border:1px solid var(--line);
  border-radius:10px;
}
.article-body thead th{
  background:var(--ink-800);
  color:#fff;
  font-weight:600;
  text-align:left;
  padding:12px 14px;
  white-space:nowrap;
}
.article-body tbody td{
  padding:11px 14px;
  border-top:1px solid var(--line);
  color:var(--text-600);
  vertical-align:top;
}
.article-body tbody tr:nth-child(even){background:#FAFCFF;}
.article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-700);}
.article-body strong{color:var(--text-900);font-weight:600;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0;}

/* ---------- 文末 ---------- */
.article-foot{
  margin-top:var(--space-4);
  padding-top:var(--space-3);
  border-top:1px solid var(--line);
  max-width:78ch;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:var(--space-3);}
.tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#FAFCFF;
  color:var(--text-600);
  font-size:13px;
  transition:all .2s ease;
}
.tag:hover{border-color:var(--brand-600);color:var(--brand-700);background:var(--brand-050);}
.foot-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:var(--space-3);}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.post-nav-card{
  display:block;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:18px 20px;
  transition:box-shadow .2s ease,border-color .2s ease,transform .2s ease;
}
.post-nav-card:hover{
  box-shadow:var(--shadow-md);
  border-color:var(--brand-050);
  transform:translateY(-2px);
}
.post-nav-card .pn-label{font-size:12px;color:var(--text-400);letter-spacing:.06em;}
.post-nav-card .pn-title{
  display:block;
  margin-top:6px;
  font-size:15px;
  font-weight:600;
  color:var(--text-900);
  line-height:1.55;
}
.post-nav-card:hover .pn-title{color:var(--brand-700);}
.post-nav-card.next{text-align:right;}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:var(--space-3);}
.side-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  padding:20px;
}
.side-title{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--text-900);
  margin-bottom:14px;
  letter-spacing:.02em;
}
.side-title::before{
  content:"";
  width:4px;height:14px;
  border-radius:2px;
  background:var(--neon-400);
}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:340px;overflow-y:auto;}
.toc-link{
  display:block;
  font-size:14px;
  color:var(--text-600);
  padding:7px 10px;
  border-left:2px solid transparent;
  border-radius:0 8px 8px 0;
  line-height:1.5;
  transition:all .18s ease;
}
.toc-link:hover{color:var(--brand-700);background:var(--brand-050);}
.toc-link.toc-h3{padding-left:22px;font-size:13.5px;color:var(--text-400);}
.toc-link.is-current{
  color:var(--brand-700);
  border-left-color:var(--neon-400);
  background:var(--brand-050);
  font-weight:600;
}
.toc-empty{font-size:13.5px;color:var(--text-400);}
.related-item{
  display:flex;
  gap:12px;
  padding:12px 0;
  border-top:1px solid var(--line);
}
.related-item:first-of-type{border-top:0;padding-top:0;}
.related-item img{
  width:80px;height:60px;
  flex-shrink:0;
  object-fit:cover;
  border-radius:8px;
  background:var(--brand-050);
}
.related-item .ri-body{min-width:0;}
.related-item .ri-title{
  font-size:14px;
  font-weight:600;
  color:var(--text-900);
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-item a:hover .ri-title{color:var(--brand-700);}
.related-item .ri-date{font-size:12.5px;color:var(--text-400);margin-top:4px;display:block;}
.side-cta{
  background:var(--ink-900);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius-card);
  padding:22px 20px;
  color:rgba(255,255,255,.72);
}
.side-cta h3{color:#fff;font-size:16px;margin-bottom:8px;}
.side-cta p{font-size:13.5px;line-height:1.75;margin-bottom:16px;color:rgba(255,255,255,.66);}
.side-cta .btn{width:100%;}

/* ---------- 空态 ---------- */
.empty-state{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  padding:var(--space-6) var(--space-4);
  text-align:center;
  min-height:320px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
}
.empty-state .empty-icon{
  width:56px;height:56px;
  border-radius:50%;
  background:var(--brand-050);
  display:flex;align-items:center;justify-content:center;
  color:var(--brand-600);
}
.empty-state h1{font-size:24px;}
.empty-state p{font-size:15px;color:var(--text-400);max-width:46ch;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);
  color:rgba(255,255,255,.66);
  border-top:1px solid var(--neon-400);
  padding-top:var(--space-5);
  margin-top:var(--space-6);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:var(--space-4);
  padding-bottom:var(--space-4);
}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);margin-top:16px;max-width:34ch;}
.footer-col h4{
  color:#fff;
  font-size:14px;
  font-weight:600;
  margin-bottom:16px;
  letter-spacing:.04em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14px;color:rgba(255,255,255,.6);}
.footer-col a{color:rgba(255,255,255,.6);font-size:14px;}
.footer-col a:hover{color:var(--neon-400);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:18px 0 22px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.45);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 32px;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:var(--space-4);}
  .article-side{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .nav-menu{
    position:fixed;
    top:0;right:0;
    height:100vh;
    width:82%;
    max-width:320px;
    background:var(--ink-900);
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:92px 20px 108px;
    transform:translateX(100%);
    transition:transform .3s ease;
    overflow-y:auto;
    z-index:60;
    box-shadow:-14px 0 40px rgba(11,18,36,.45);
  }
  .nav-menu a{
    display:flex;
    align-items:center;
    height:52px;
    border-bottom:1px solid rgba(255,255,255,.08);
    font-size:15px;
    padding:0;
  }
  .nav-menu a::after{display:none;}
  .nav-menu a.active{color:var(--neon-400);text-shadow:none;}
  .drawer-cta{
    display:block;
    position:fixed;
    bottom:24px;
    right:20px;
    width:calc(82% - 40px);
    max-width:280px;
    z-index:61;
  }
  .drawer-cta .btn{width:100%;}
  body.nav-open .nav-menu{transform:translateX(0);}
  body.nav-open::before{
    content:"";
    position:fixed;
    inset:0;
    background:rgba(11,18,36,.6);
    z-index:55;
  }
  .nav-toggle{
    display:flex;
    align-items:center;
    justify-content:center;
    width:44px;height:44px;
    border:0;
    background:transparent;
    position:relative;
    cursor:pointer;
    border-radius:10px;
    z-index:75;
  }
  .nav-toggle span,
  .nav-toggle span::before,
  .nav-toggle span::after{
    content:"";
    position:absolute;
    left:50%;
    width:20px;height:2px;
    background:#fff;
    border-radius:2px;
    transform:translateX(-50%);
    transition:.25s ease;
  }
  .nav-toggle span{top:50%;margin-top:-1px;}
  .nav-toggle span::before{top:-7px;}
  .nav-toggle span::after{top:7px;}
  body.nav-open .nav-toggle span{background:transparent;}
  body.nav-open .nav-toggle span::before{top:0;transform:translateX(-50%) rotate(45deg);}
  body.nav-open .nav-toggle span::after{top:0;transform:translateX(-50%) rotate(-45deg);}
  .nav-actions .btn-ghost{display:none;}
}
@media (max-width:768px){
  .topbar-right span:first-child{display:none;}
  .article-main{padding:var(--space-3);}
  .page-main{padding:var(--space-4) 0 var(--space-5);}
  .article-body h2{font-size:20px;}
  .article-body h3{font-size:17px;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav-card.next{text-align:left;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:var(--space-3);}
  .site-footer{padding-top:var(--space-4);}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .topbar-inner{font-size:12px;}
  .logo-main{font-size:15px;}
  .logo-sub{font-size:10px;letter-spacing:.22em;}
  .nav-inner{min-height:64px;gap:12px;}
  .nav-actions .btn-neon{padding:0 14px;font-size:14px;height:40px;}
  .article-title{font-size:23px;}
  .article-main{padding:20px 16px;}
  .btn{width:100%;height:48px;}
  .foot-actions .btn{width:100%;}
  .breadcrumb .current{max-width:24ch;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category1 */
:root{
  --ink-900:#0B1224;
  --ink-800:#131C31;
  --brand-600:#1F5FD0;
  --brand-700:#174BAD;
  --brand-050:#EAF1FE;
  --neon-400:#2EE6C8;
  --amber-500:#FF9F2E;
  --bg:#F5F8FD;
  --surface:#FFFFFF;
  --line:#E2E9F5;
  --text-900:#101A2E;
  --text-600:#4A5876;
  --text-400:#8A97AF;
  --ok:#1FA97A;
  --err:#D9484B;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-1:0 8px 24px rgba(16,26,46,.08);
  --shadow-2:0 14px 36px rgba(16,26,46,.14);
  --gap-1:8px;
  --gap-2:16px;
  --gap-3:24px;
  --gap-4:32px;
  --gap-5:48px;
  --gap-6:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  margin:0;
  color:var(--text-900);
  font-weight:700;
  line-height:1.35;
  letter-spacing:-.01em;
}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-700)}
img{max-width:100%;display:block;border-style:none}
button{font:inherit;color:inherit}
svg{display:block}
:focus-visible{outline:2px solid var(--neon-400);outline-offset:2px}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:72px 0}
.section--tight{padding:56px 0}
.section--alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{margin-bottom:var(--gap-4);max-width:760px}
.section-head h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:10px}
.section-head p{font-size:15px;color:var(--text-600)}
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:var(--radius-pill);
  background:var(--brand-050);
  color:var(--brand-700);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
}

/* ---------- 顶栏 ---------- */
.topbar{
  background:var(--ink-900);
  color:rgba(255,255,255,.62);
  font-size:13px;
}
.topbar .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--gap-2);
  height:36px;
}
.topbar-left{position:relative;padding-left:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-left::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:14px;
  border-radius:2px;
  background:var(--neon-400);
}
.topbar-right{white-space:nowrap;color:rgba(255,255,255,.45)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--ink-900);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:linear-gradient(90deg,var(--neon-400),var(--brand-600),rgba(31,95,208,0));
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--gap-3);
  height:72px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:none;
}
.logo-mark{
  width:28px;height:28px;
  border-radius:7px;
  background:linear-gradient(140deg,var(--brand-600),var(--neon-400));
  position:relative;
  flex:none;
}
.logo-mark::after{
  content:"";
  position:absolute;
  inset:8px;
  border:2px solid #fff;
  border-radius:2px;
  transform:rotate(45deg);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-main{font-size:16px;font-weight:700;color:#fff;letter-spacing:.02em}
.logo-sub{font-size:11px;color:rgba(255,255,255,.55);letter-spacing:.14em}
.nav-menu{
  display:flex;
  align-items:center;
  gap:26px;
  flex:1 1 auto;
  justify-content:flex-end;
}
.nav-menu a{
  position:relative;
  font-size:15px;
  color:rgba(255,255,255,.72);
  padding:6px 0;
  white-space:nowrap;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  height:2px;width:0;
  border-radius:2px;
  background:var(--neon-400);
  transition:width .22s ease;
}
.nav-menu a:hover{color:#fff}
.nav-menu a:hover::after{width:100%}
.nav-menu a.active{color:#fff;text-shadow:0 0 12px rgba(46,230,200,.45)}
.nav-menu a.active::after{width:12px}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  border:1.5px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.btn-primary{background:var(--brand-600);color:#fff}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-1)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:var(--surface);border-color:var(--brand-600);color:var(--brand-600)}
.btn-outline:hover{background:var(--brand-050);color:var(--brand-700);transform:translateY(-1px)}
.btn-ghost{border-color:rgba(255,255,255,.34);color:#fff;background:transparent}
.btn-ghost:hover{border-color:rgba(255,255,255,.8);background:rgba(255,255,255,.08);color:#fff}
.btn-neon{background:var(--neon-400);color:var(--ink-900)}
.btn-neon:hover{box-shadow:0 0 18px rgba(46,230,200,.45);filter:brightness(1.05);color:var(--ink-900)}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:none;
  border-radius:10px;
  background:rgba(255,255,255,.08);
  position:relative;
  cursor:pointer;
  flex:none;
}
.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after{
  content:"";
  position:absolute;
  left:12px;
  width:20px;height:2px;
  border-radius:2px;
  background:#fff;
  transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle::before{top:15px}
.nav-toggle span{top:21px;display:block}
.nav-toggle::after{top:27px}
.nav-toggle.is-open::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span{opacity:0}
.nav-toggle.is-open::after{transform:translateY(-6px) rotate(-45deg)}
.nav-overlay{
  position:fixed;
  inset:0;
  background:rgba(11,18,36,.6);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
  z-index:70;
}
.nav-overlay.show{opacity:1;visibility:visible}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background:linear-gradient(180deg,var(--brand-050) 0%,#FFFFFF 100%);
  border-bottom:1px solid var(--line);
}
.page-hero-bg{
  position:absolute;
  right:0;bottom:0;
  width:54%;height:100%;
  background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  opacity:.2;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 60%);
  mask-image:linear-gradient(90deg,transparent,#000 60%);
  pointer-events:none;
}
.page-hero-inner{
  position:relative;
  z-index:2;
  padding:56px 0 64px;
  max-width:780px;
}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-400);
  margin-bottom:20px;
}
.crumbs a{color:var(--text-400)}
.crumbs a:hover{color:var(--brand-600)}
.crumbs .sep{color:var(--line)}
.crumbs .now{color:var(--text-600)}
.page-hero h1{
  font-size:clamp(26px,3.2vw,40px);
  margin-bottom:14px;
}
.page-hero .lead{
  font-size:16px;
  color:var(--text-600);
  max-width:620px;
}
.page-hero .hero-badges{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:20px;
}
.hero-badges .badge{background:#fff;border:1px solid var(--line);color:var(--brand-700)}

/* ---------- 列表区 ---------- */
.list-layout{
  display:grid;
  grid-template-columns:240px minmax(0,1fr);
  gap:var(--gap-4);
  align-items:start;
}
.filter-panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:20px;
  box-shadow:var(--shadow-1);
  position:sticky;
  top:96px;
}
.filter-panel h2{
  font-size:15px;
  margin-bottom:6px;
}
.filter-panel .filter-note{
  font-size:13px;
  color:var(--text-400);
  margin-bottom:16px;
}
.filter-list{display:flex;flex-direction:column;gap:8px}
.chip{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px;
  height:40px;
  padding:0 14px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--text-600);
  font-size:14px;
  text-align:left;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.chip:hover{border-color:var(--brand-600);color:var(--brand-700)}
.chip.is-active{
  background:var(--brand-600);
  border-color:var(--brand-600);
  color:#fff;
  box-shadow:0 6px 16px rgba(31,95,208,.28);
}
.chip .chip-count{
  font-size:12px;
  color:var(--text-400);
}
.chip.is-active .chip-count{color:rgba(255,255,255,.75)}

.entry-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--gap-3);
}
.entry-card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:box-shadow .22s ease,border-color .22s ease,transform .22s ease;
}
.entry-card:hover{
  box-shadow:var(--shadow-2);
  border-color:var(--brand-050);
  transform:translateY(-3px);
}
.entry-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--brand-050);
}
.entry-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.entry-card:hover .entry-thumb img{transform:scale(1.03)}
.entry-body{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:18px 20px 20px;
  flex:1 1 auto;
}
.tag{
  display:inline-flex;
  align-items:center;
  align-self:flex-start;
  height:24px;
  padding:0 10px;
  border-radius:var(--radius-pill);
  background:var(--brand-050);
  color:var(--brand-700);
  font-size:12px;
  font-weight:600;
}
.entry-body h3{font-size:17px;line-height:1.5}
.entry-card:hover h3{color:var(--brand-700)}
.entry-body p{font-size:14px;line-height:1.75;color:var(--text-600)}
.entry-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding-top:12px;
  border-top:1px dashed var(--line);
  font-size:13px;
  color:var(--text-400);
}
.entry-foot .arrow{
  width:20px;height:20px;
  color:var(--brand-600);
  transition:transform .22s ease;
}
.entry-card:hover .entry-foot .arrow{transform:translateX(3px)}
.empty-hint{
  display:none;
  padding:48px 24px;
  text-align:center;
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  background:var(--surface);
  color:var(--text-400);
  font-size:14px;
}

/* ---------- 指标带 ---------- */
.metrics{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
  margin-top:40px;
}
.metric{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:20px 22px;
  box-shadow:var(--shadow-1);
}
.metric strong{
  display:block;
  font-size:30px;
  font-weight:700;
  color:var(--brand-600);
  line-height:1.2;
  letter-spacing:-.02em;
}
.metric span{font-size:13px;color:var(--text-400)}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  min-height:56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:16px 0;
  background:none;
  border:none;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text-900);
  cursor:pointer;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand-700)}
.faq-icon{
  flex:none;
  width:22px;height:22px;
  position:relative;
  color:var(--brand-600);
  transition:transform .2s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  transform:translate(-50%,-50%);
  background:currentColor;
  border-radius:2px;
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-item.open .faq-a{max-height:420px}
.faq-a p{
  padding:0 0 20px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-600);
  max-width:70ch;
}

/* ---------- CTA ---------- */
.cta-band{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--gap-3);
  padding:40px;
  border-radius:20px;
  background:linear-gradient(135deg,var(--brand-050) 0%,#FFFFFF 100%);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:8px}
.cta-band p{font-size:15px;color:var(--text-600);max-width:52ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:none}
.back-row{display:flex;justify-content:center;margin-top:40px}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--ink-900);
  color:rgba(255,255,255,.6);
  padding:64px 0 0;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:var(--neon-400);
  opacity:.7;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.58);
  max-width:330px;
}
.footer-col h4{
  color:#fff;
  font-size:14px;
  font-weight:600;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;color:rgba(255,255,255,.6)}
.footer-col a{font-size:14px;color:rgba(255,255,255,.6)}
.footer-col a:hover{color:var(--neon-400)}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  padding:20px 0;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;
  color:rgba(255,255,255,.45);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .nav-menu{gap:20px}
}
@media (max-width:1023px){
  .container{padding:0 32px}
  .nav-toggle{display:block}
  .nav-actions .btn-ghost{display:none}
  .nav-menu{
    position:fixed;
    top:0;right:0;
    width:82%;
    max-width:320px;
    height:100vh;
    padding:88px 22px 40px;
    background:var(--ink-900);
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:0;
    transform:translateX(100%);
    transition:transform .28s ease;
    z-index:75;
    overflow-y:auto;
    box-shadow:-12px 0 40px rgba(11,18,36,.5);
  }
  .nav-menu.open{transform:translateX(0)}
  .nav-menu a{
    height:52px;
    display:flex;
    align-items:center;
    padding:0 4px;
    font-size:16px;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .nav-menu a::after{display:none}
  .nav-menu a.active{color:var(--neon-400)}
  .list-layout{grid-template-columns:1fr}
  .filter-panel{position:static}
  .filter-list{flex-direction:row;flex-wrap:wrap;gap:10px}
  .chip{height:36px;padding:0 14px}
  .entry-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .page-hero-inner{padding:44px 0 52px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:52px 0}
  .section--tight{padding:44px 0}
  .topbar-right{display:none}
  .entry-grid{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px}
  .cta-actions{width:100%}
  .page-hero-bg{width:78%;opacity:.14}
  .page-hero h1{font-size:clamp(24px,6vw,30px)}
}
@media (max-width:520px){
  .logo-main{font-size:15px}
  .logo-sub{font-size:10px;letter-spacing:.1em}
  .nav-actions .btn-neon{height:38px;padding:0 14px;font-size:14px}
  .metrics{grid-template-columns:1fr}
  .cta-actions .btn,
  .back-row .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .metric strong{font-size:26px}
}

/* roulang page: category2 */
:root{
  --ink-900:#0B1224;
  --ink-800:#131C31;
  --brand-600:#1F5FD0;
  --brand-700:#174BAD;
  --brand-050:#EAF1FE;
  --neon-400:#2EE6C8;
  --amber-500:#FF9F2E;
  --bg:#F5F8FD;
  --surface:#FFFFFF;
  --line:#E2E9F5;
  --text-900:#101A2E;
  --text-600:#4A5876;
  --text-400:#8A97AF;
  --ok:#1FA97A;
  --err:#D9484B;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-sm:0 8px 24px rgba(16,26,46,.08);
  --shadow-md:0 14px 36px rgba(16,26,46,.14);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text-600);
  background:var(--bg);
}
h1,h2,h3,h4{margin:0;color:var(--text-900);font-weight:700;letter-spacing:-.01em;line-height:1.35}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-700)}
img{max-width:100%;display:block}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--neon-400);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ============ 顶部信息条 + 导航 ============ */
.site-header{position:sticky;top:0;z-index:120;background:var(--ink-900);}
.site-header::after{
  content:"";display:block;height:2px;
  background:linear-gradient(90deg,var(--neon-400),var(--brand-600) 55%,rgba(31,95,208,0));
  opacity:.9;
}
.topbar{height:36px;border-bottom:1px solid rgba(255,255,255,.06);font-size:13px;color:rgba(255,255,255,.58)}
.topbar .container{display:flex;align-items:center;justify-content:space-between;height:100%;gap:16px}
.topbar-left{display:flex;align-items:center;gap:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-left::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--neon-400);flex:none}
.topbar-right{white-space:nowrap;color:rgba(255,255,255,.45)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.logo{display:flex;align-items:center;gap:12px;color:#fff}
.logo:hover{color:#fff}
.logo-mark{position:relative;width:22px;height:22px;border-radius:6px;background:linear-gradient(135deg,var(--neon-400),var(--brand-600));transform:rotate(45deg);flex:none}
.logo-mark::after{content:"";position:absolute;inset:6px;border-radius:2px;background:var(--ink-900)}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-main{font-size:18px;font-weight:700;letter-spacing:.02em;color:#fff}
.logo-sub{font-size:11px;letter-spacing:.18em;color:rgba(255,255,255,.55)}
.nav-menu{display:flex;align-items:center;gap:2px}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;
  padding:8px 12px;font-size:15px;color:rgba(255,255,255,.72);
  border-radius:8px;transition:color .22s ease;
}
.nav-menu a::after{
  content:"";position:absolute;left:50%;bottom:2px;height:2px;width:0;border-radius:2px;
  background:var(--neon-400);transform:translateX(-50%);transition:width .22s ease;
}
.nav-menu a:hover{color:#fff}
.nav-menu a:hover::after{width:calc(100% - 24px)}
.nav-menu a.active{color:#fff;text-shadow:0 0 12px rgba(46,230,200,.45)}
.nav-menu a.active::after{width:12px}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid rgba(255,255,255,.2);
  border-radius:10px;background:transparent;position:relative;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:#fff;content:"";
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
body.menu-open .nav-toggle span{background:transparent}
body.menu-open .nav-toggle span::before{transform:translateX(-50%) rotate(45deg);top:0}
body.menu-open .nav-toggle span::after{transform:translateX(-50%) rotate(-45deg);top:0}
.nav-scrim{position:fixed;inset:0;background:rgba(11,18,36,.6);opacity:0;visibility:hidden;transition:opacity .25s ease;z-index:110}
.nav-scrim.show{opacity:1;visibility:visible}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;border:1.5px solid transparent;
  cursor:pointer;transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--brand-600);color:#fff}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-sm)}
.btn-neon{background:var(--neon-400);color:var(--ink-900)}
.btn-neon:hover{background:#4ff0d6;color:var(--ink-900);transform:translateY(-1px);box-shadow:0 0 18px rgba(46,230,200,.45)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.btn-ghost:hover{color:#fff;border-color:rgba(255,255,255,.85);background:rgba(255,255,255,.06)}
.btn-outline{background:#fff;color:var(--brand-600);border-color:var(--brand-600)}
.btn-outline:hover{background:var(--brand-050);color:var(--brand-700);border-color:var(--brand-700);transform:translateY(-1px);box-shadow:var(--shadow-sm)}
.btn-amber{background:var(--amber-500);color:var(--ink-900)}
.btn-amber:hover{background:#ffb455;color:var(--ink-900);transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,159,46,.35)}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

/* ============ 内页页头 ============ */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,var(--brand-050) 0%,#fff 100%);
  padding:40px 0 72px;
}
.page-hero::after{
  content:"";position:absolute;right:-40px;bottom:-40px;width:520px;height:360px;
  background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  opacity:.22;border-radius:24px 0 0 0;pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;max-width:1000px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-400);margin-bottom:24px}
.breadcrumb a{color:var(--text-400)}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb span.sep{color:#C3CDDF}
.breadcrumb span.current{color:var(--text-600)}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:var(--brand-050);color:var(--brand-600);
}
.badge-neon{background:rgba(46,230,200,.16);color:#0d7a6a}
.page-hero h1{
  margin:16px 0 12px;
  font-size:clamp(28px,3.4vw,42px);
  max-width:820px;
}
.page-hero .lede{font-size:16px;color:var(--text-600);max-width:720px}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.chip{
  display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 14px;
  border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:13px;color:var(--text-600);box-shadow:0 2px 8px rgba(16,26,46,.04);
}
.chip i{width:6px;height:6px;border-radius:50%;background:var(--neon-400);display:inline-block}

/* ============ 通用板块 ============ */
.section{padding:72px 0}
.section-tight{padding:56px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{font-size:clamp(22px,2.4vw,30px)}
.section-head p{margin-top:12px;font-size:15px;color:var(--text-600)}
.eyebrow{display:block;font-size:13px;font-weight:600;letter-spacing:.14em;color:var(--brand-600);margin-bottom:10px}

/* ============ 图文交错 ============ */
.split{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center}
.split.reverse{grid-template-columns:7fr 5fr}
.split.reverse .split-media{order:2}
.split-media{position:relative}
.split-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);background:var(--brand-050);
}
.split-media .media-tag{
  position:absolute;left:16px;bottom:16px;
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;
  border-radius:999px;background:rgba(255,255,255,.94);
  font-size:13px;font-weight:600;color:var(--ink-900);box-shadow:var(--shadow-sm);
}
.split-media .media-tag b{color:var(--brand-600)}
.split-body h2{font-size:clamp(21px,2.2vw,28px);margin-bottom:16px}
.split-body p{font-size:15px;margin-bottom:14px}
.feature-list{margin:20px 0 26px;display:grid;gap:12px}
.feature-list li{
  position:relative;padding-left:22px;font-size:15px;color:var(--text-600);
}
.feature-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--brand-050);border:2px solid var(--brand-600);
}
.feature-list li strong{color:var(--text-900);font-weight:600}

/* 步骤条 */
.steps{display:grid;gap:14px;margin:22px 0 26px;counter-reset:step}
.steps li{
  display:flex;gap:14px;align-items:flex-start;padding:14px 16px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  box-shadow:0 2px 10px rgba(16,26,46,.04);
}
.steps li::before{
  counter-increment:step;content:counter(step);
  flex:none;width:28px;height:28px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-600);color:#fff;font-size:13px;font-weight:700;
}
.steps li p{font-size:14.5px;line-height:1.7}
.steps li strong{display:block;color:var(--text-900);font-size:15px;font-weight:600;margin-bottom:2px}

/* ============ 指标带 ============ */
.band{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.metric{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:0 4px 16px rgba(16,26,46,.05);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.metric:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--brand-050)}
.metric .num{font-size:32px;font-weight:700;color:var(--brand-600);letter-spacing:-.02em;line-height:1.2}
.metric .num small{font-size:14px;font-weight:600;color:var(--text-400);margin-left:4px}
.metric .label{margin-top:8px;font-size:13px;color:var(--text-400)}

/* ============ 提示卡 ============ */
.note-card{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--brand-050);border-left:3px solid var(--neon-400);
  border-radius:12px;padding:20px 22px;margin-top:24px;
}
.note-card .note-icon{
  flex:none;width:32px;height:32px;border-radius:9px;background:#fff;
  display:flex;align-items:center;justify-content:center;color:var(--brand-600);
}
.note-card p{font-size:14.5px;line-height:1.75;color:var(--text-600)}
.note-card strong{color:var(--text-900)}

/* ============ FAQ ============ */
.faq{max-width:820px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;min-height:56px;padding:18px 0;background:none;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;color:var(--text-900);text-align:left;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand-600)}
.faq-icon{position:relative;flex:none;width:18px;height:18px;transition:transform .2s ease}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-600);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px;transition:opacity .2s ease}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s ease}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a p{font-size:15px;line-height:1.8;color:var(--text-600);padding-bottom:20px;max-width:72ch}

/* ============ CTA ============ */
.cta-band{background:var(--brand-050);padding:64px 0}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  background:#fff;border:1px solid var(--line);border-radius:24px;
  padding:40px 44px;box-shadow:var(--shadow-sm);
}
.cta-inner h2{font-size:clamp(21px,2.2vw,28px);margin-bottom:10px}
.cta-inner p{font-size:15px;color:var(--text-600);max-width:52ch}
.cta-actions{display:flex;gap:12px;flex:none;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{position:relative;background:var(--ink-900);color:rgba(255,255,255,.6);padding:64px 0 0;margin-top:0}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(46,230,200,0),var(--neon-400) 30%,rgba(46,230,200,.15));
}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.55);max-width:34ch}
.footer-brand .logo{margin-bottom:4px}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col li,.footer-col a{font-size:14px;color:rgba(255,255,255,.6);line-height:1.7}
.footer-col a:hover{color:var(--neon-400)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 24px;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:rgba(255,255,255,.42);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 32px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-toggle{display:block}
  .nav-actions .btn-ghost{display:none}
  .nav-menu{
    position:fixed;top:0;right:0;z-index:115;
    width:82%;max-width:320px;height:100vh;
    background:var(--ink-900);
    flex-direction:column;align-items:stretch;gap:0;
    padding:92px 20px 96px;overflow-y:auto;
    transform:translateX(100%);transition:transform .28s ease;
    box-shadow:-16px 0 40px rgba(0,0,0,.3);
  }
  .nav-menu.open{transform:translateX(0)}
  .nav-menu a{
    height:52px;padding:0 8px;border-radius:0;
    border-bottom:1px solid rgba(255,255,255,.08);
    font-size:16px;color:rgba(255,255,255,.8);
  }
  .nav-menu a::after{display:none}
  .nav-menu a.active{color:var(--neon-400);text-shadow:none}
  .split,.split.reverse{grid-template-columns:1fr;gap:32px}
  .split.reverse .split-media{order:0}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .topbar-right{display:none}
  .nav-inner{height:64px;gap:12px}
  .logo-main{font-size:16px}
  .logo-sub{font-size:10px}
  .nav-actions{gap:8px}
  .nav-actions .btn-neon{height:40px;padding:0 16px;font-size:14px}
  .page-hero{padding:28px 0 52px}
  .page-hero::after{width:340px;height:260px;opacity:.16}
  .section{padding:48px 0}
  .section-tight{padding:40px 0}
  .section-head{margin-bottom:28px}
  .cta-band{padding:48px 0}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .logo-sub{letter-spacing:.12em}
  .nav-actions .btn-neon{padding:0 12px}
  .metrics{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .page-hero h1{font-size:26px}
  .hero-chips{gap:8px}
  .chip{height:30px;font-size:12px;padding:0 12px}
  .btn{width:100%}
  .nav-actions .btn-neon,.nav-toggle{width:auto}
  .steps li{padding:12px 14px}
}

/* roulang page: category3 */
:root{
  --ink-900:#0B1224;
  --ink-800:#131C31;
  --brand-600:#1F5FD0;
  --brand-700:#174BAD;
  --brand-050:#EAF1FE;
  --neon-400:#2EE6C8;
  --amber-500:#FF9F2E;
  --bg:#F5F8FD;
  --surface:#FFFFFF;
  --line:#E2E9F5;
  --text-900:#101A2E;
  --text-600:#4A5876;
  --text-400:#8A97AF;
  --ok:#1FA97A;
  --err:#D9484B;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-1:0 8px 24px rgba(16,26,46,.08);
  --shadow-2:0 14px 36px rgba(16,26,46,.14);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--text-900);font-weight:700;line-height:1.32;letter-spacing:-0.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
img{max-width:100%;display:block;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--neon-400);outline-offset:2px;}
::selection{background:var(--brand-050);color:var(--brand-700);}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:200;
  background:var(--ink-900);
  box-shadow:0 6px 24px rgba(11,18,36,.28);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:linear-gradient(90deg,var(--neon-400) 0%,rgba(46,230,200,.4) 34%,rgba(31,95,208,.22) 68%,rgba(31,95,208,0) 100%);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:72px;
}
.logo{display:flex;align-items:center;gap:10px;flex:none;}
.logo-mark{
  width:22px;height:22px;border-radius:6px;flex:none;position:relative;
  background:linear-gradient(135deg,var(--neon-400) 0%,var(--brand-600) 100%);
}
.logo-mark::after{
  content:"";position:absolute;inset:6px;border-radius:2px;background:var(--ink-900);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-main{color:#FFFFFF;font-size:16px;font-weight:700;letter-spacing:.02em;}
.logo-sub{color:rgba(255,255,255,.5);font-size:11px;letter-spacing:.16em;}
.nav-menu{display:flex;align-items:center;gap:24px;}
.nav-menu a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:14px;
  color:rgba(255,255,255,.72);
  white-space:nowrap;
  transition:color .22s ease;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:0;bottom:-2px;
  height:2px;width:0;
  background:var(--neon-400);
  border-radius:2px;
  transition:width .22s ease;
}
.nav-menu a:hover{color:#FFFFFF;}
.nav-menu a:hover::after{width:100%;}
.nav-menu a.active{
  color:#FFFFFF;
  text-shadow:0 0 12px rgba(46,230,200,.55);
}
.nav-menu a.active::after{width:100%;}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;
  border-radius:var(--r-btn);
  font-size:14px;font-weight:600;
  white-space:nowrap;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn-neon{background:var(--neon-400);color:var(--ink-900);}
.btn-neon:hover{background:#4DF0D6;box-shadow:0 0 18px rgba(46,230,200,.45);transform:translateY(-1px);}
.btn-neon:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;color:#FFFFFF;border:1px solid rgba(255,255,255,.25);}
.btn-ghost:hover{border-color:rgba(255,255,255,.55);background:rgba(255,255,255,.07);}
.btn-primary{background:var(--brand-600);color:#FFFFFF;}
.btn-primary:hover{background:var(--brand-700);box-shadow:var(--shadow-2);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-1);}
.btn-outline{background:var(--surface);color:var(--brand-600);border:1.5px solid var(--brand-600);}
.btn-outline:hover{background:var(--brand-050);}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.2);
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:#FFFFFF;border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#FFFFFF;border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:52px 0 60px;
  background:linear-gradient(180deg,var(--brand-050) 0%,#FFFFFF 100%);
  border-bottom:1px solid var(--line);
}
.page-hero__bg{
  position:absolute;
  top:0;right:0;bottom:0;
  width:58%;
  background:url(/assets/images/backpic/back-2.png) center right/cover no-repeat;
  opacity:.16;
  pointer-events:none;
}
.page-hero__bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,#FFFFFF 0%,rgba(255,255,255,.55) 45%,rgba(255,255,255,0) 100%);
}
.page-hero .container{position:relative;z-index:1;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-400);margin-bottom:18px;}
.crumbs a:hover{color:var(--brand-600);}
.crumbs .sep{color:#C3CEE3;}
.crumbs .current{color:var(--text-600);}
.page-hero h1{
  font-size:clamp(28px,3.2vw,40px);
  line-height:1.26;
  max-width:860px;
  margin-bottom:16px;
}
.page-hero .lead{
  font-size:16px;
  max-width:680px;
  color:var(--text-600);
}

/* ---------- common section ---------- */
.section{padding:72px 0;}
.section--flush{padding-top:64px;}
.section--surface{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:780px;margin-bottom:32px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:24px;padding:0 10px;
  border-radius:999px;
  background:var(--brand-050);
  color:var(--brand-600);
  font-size:12px;font-weight:600;
  margin-bottom:14px;
}
.section-head h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:12px;}
.section-head p{font-size:15px;color:var(--text-600);}

/* ---------- flow ---------- */
.flow{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.flow-step{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px 24px 26px;
  box-shadow:var(--shadow-1);
  transition:box-shadow .24s ease,transform .24s ease,border-color .24s ease;
}
.flow-step:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#D6E3FA;}
.flow-num{
  width:44px;height:44px;
  border-radius:999px;
  background:var(--brand-600);
  color:#FFFFFF;
  font-size:16px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  margin-bottom:18px;
  box-shadow:0 6px 16px rgba(31,95,208,.28);
}
.flow-step h3{font-size:17px;margin-bottom:10px;}
.flow-step p{font-size:14px;line-height:1.85;color:var(--text-600);}
.flow-step::after{
  content:"";
  position:absolute;
  top:50px;left:100%;
  width:24px;
  border-top:2px dashed #B9CFF1;
}
.flow-step:last-child::after{display:none;}

/* ---------- compare table ---------- */
.compare-shell{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  background:var(--surface);
  box-shadow:var(--shadow-1);
}
.compare-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
table.compare{width:100%;border-collapse:collapse;min-width:680px;}
table.compare thead th{
  background:var(--ink-800);
  color:#FFFFFF;
  font-size:14px;font-weight:600;
  text-align:left;
  padding:16px 18px;
  white-space:nowrap;
}
table.compare thead th:first-child{color:rgba(255,255,255,.62);font-weight:500;}
table.compare tbody th{
  text-align:left;
  font-weight:500;
  font-size:14px;
  color:var(--text-600);
  background:#FAFCFF;
  padding:14px 18px;
  border-top:1px solid var(--line);
  width:170px;
  white-space:nowrap;
}
table.compare tbody td{
  padding:14px 18px;
  font-size:14px;
  color:var(--text-600);
  border-top:1px solid var(--line);
  vertical-align:middle;
}
table.compare tbody tr:nth-child(even) td{background:#FAFCFF;}
.ic{display:inline-flex;align-items:center;justify-content:center;vertical-align:-2px;}
.ic-ok{color:var(--ok);}
.ic-none{color:var(--text-400);}
.compare-note{font-size:14px;color:var(--text-400);margin-top:14px;}

/* ---------- check grid ---------- */
.check-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;}
.check-figure{
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  background:var(--brand-050);
}
.check-figure img{
  width:100%;
  height:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  transition:transform .35s ease;
}
.check-figure:hover img{transform:scale(1.03);}
.check-list{display:grid;gap:18px;}
.check-item{display:flex;gap:14px;padding-bottom:18px;border-bottom:1px solid var(--line);}
.check-item:last-child{border-bottom:0;padding-bottom:0;}
.check-ico{
  flex:none;
  width:26px;height:26px;
  margin-top:3px;
  border-radius:8px;
  background:var(--brand-050);
  color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;
}
.check-item h3{font-size:15px;margin-bottom:4px;}
.check-item p{font-size:14px;color:var(--text-600);}

/* ---------- faq ---------- */
.faq{max-width:820px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  text-align:left;
  padding:20px 4px;
  font-size:16px;font-weight:600;
  color:var(--text-900);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand-700);}
.faq-q:focus-visible{outline:2px solid var(--neon-400);outline-offset:2px;border-radius:6px;}
.faq-ico{position:relative;flex:none;width:22px;height:22px;}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;background:var(--brand-600);border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.faq-ico::before{left:0;right:0;top:10px;height:2px;}
.faq-ico::after{top:0;bottom:0;left:10px;width:2px;}
.faq-item.open .faq-ico::after{transform:rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--text-600);}
.faq-item.open .faq-a{max-height:360px;}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--ink-900);
  border-top:1px solid rgba(46,230,200,.3);
  border-bottom:1px solid rgba(46,230,200,.16);
}
.cta-band::before{
  content:"";
  position:absolute;
  left:-10%;top:-140px;
  width:520px;height:320px;
  background:radial-gradient(circle,rgba(46,230,200,.18) 0%,rgba(46,230,200,0) 70%);
  pointer-events:none;
}
.cta-inner{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:44px 0;
}
.cta-inner h2{color:#FFFFFF;font-size:clamp(22px,2.4vw,28px);margin-bottom:8px;}
.cta-inner p{color:rgba(255,255,255,.68);font-size:15px;max-width:620px;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink-900);
  color:rgba(255,255,255,.6);
  border-top:1px solid rgba(46,230,200,.28);
  padding-top:64px;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:48px;
  padding-bottom:48px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.55);max-width:330px;}
.footer-col h4{color:#FFFFFF;font-size:14px;font-weight:600;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{color:rgba(255,255,255,.6);font-size:14px;}
.footer-col a:hover{color:var(--neon-400);}
.footer-col li{color:rgba(255,255,255,.6);font-size:14px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;
  padding:22px 0;
  border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;
  color:rgba(255,255,255,.45);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 32px;}
}
@media (max-width:1023px){
  .container{padding:0 32px;}
  .nav-menu{
    position:absolute;
    top:100%;left:0;right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:8px 32px 20px;
    background:var(--ink-800);
    border-bottom:1px solid rgba(255,255,255,.08);
    box-shadow:0 18px 32px rgba(11,18,36,.4);
  }
  .site-header.menu-open .nav-menu{display:flex;}
  .nav-menu a{padding:14px 0;font-size:15px;border-bottom:1px solid rgba(255,255,255,.08);}
  .nav-menu a::after{display:none;}
  .nav-toggle{display:flex;}
  .flow{grid-template-columns:1fr;gap:16px;}
  .flow-step::after{
    top:100%;left:50px;
    width:0;height:16px;
    border-top:0;
    border-left:2px dashed #B9CFF1;
  }
  .check-grid{grid-template-columns:1fr;gap:32px;}
  .check-figure{max-width:560px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:52px 0;}
  .page-hero{padding:36px 0 44px;}
  .page-hero__bg{width:100%;opacity:.12;}
  .nav-actions .btn{display:none;}
  .nav-inner{gap:16px;}
  .cta-inner{padding:36px 0;gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .page-hero h1{font-size:26px;}
  .btn{width:100%;height:48px;}
  .cta-inner .btn{width:100%;}
  .footer-bottom{flex-direction:column;gap:8px;}
}