/* roulang page: index */
:root{
  --c-primary:#12C2B4;
  --c-primary-2:#0FA79B;
  --c-secondary:#2C63E8;
  --c-accent:#F0A93B;
  --bg-0:#06101C;
  --bg-1:#081524;
  --bg-2:#0A1A2B;
  --bg-3:#0D2033;
  --glass:rgba(255,255,255,.045);
  --glass-line:rgba(255,255,255,.08);
  --glass-line-strong:rgba(255,255,255,.14);
  --txt-0:#EAF2FA;
  --txt-1:#A7B6C8;
  --txt-2:#6E8091;
  --danger:#F0703B;
  --r-card:16px;
  --r-sm:12px;
  --r-btn:10px;
  --r-pill:999px;
  --r-badge:6px;
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:32px;
  --sp-5:48px;
  --sec-y:96px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04);
  --shadow-hover:0 0 0 1px rgba(18,194,180,.35),0 8px 28px rgba(18,194,180,.18);
  --grad-btn:linear-gradient(135deg,#12C2B4 0%,#2C63E8 100%);
  --grad-line:linear-gradient(90deg,rgba(18,194,180,0) 0%,rgba(18,194,180,.6) 45%,rgba(44,99,232,0) 100%);
  --font-cn:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--txt-0);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    radial-gradient(720px 420px at 12% -6%,rgba(18,194,180,.14),transparent 68%),
    radial-gradient(640px 380px at 92% 4%,rgba(44,99,232,.12),transparent 70%);
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease-out}
a:hover{color:#2fd8ca}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:0;color:var(--txt-0)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
input,textarea{outline:none}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.container{width:100%;max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto;position:relative;z-index:1}
.sec{padding:var(--sec-y) 0;position:relative}
.sec-alt{background:var(--bg-1)}
.sec-deep{background:var(--bg-2)}
.sec-head{margin-bottom:var(--sp-4)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--c-primary);letter-spacing:.06em;
  padding:6px 12px;border-radius:var(--r-badge);
  background:rgba(18,194,180,.08);border:1px solid rgba(18,194,180,.22);
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:16px;height:2px;background:var(--c-primary);border-radius:2px}
.sec-title{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px}
.sec-desc{color:var(--txt-1);font-size:15px;max-width:680px}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;
  font-weight:600;font-size:15px;line-height:1;padding:14px 24px;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,filter .18s ease-out;
  white-space:nowrap;
}
.btn-main{background:var(--grad-btn);color:#04121A;box-shadow:0 0 0 1px rgba(18,194,180,.35),0 6px 18px rgba(18,194,180,.22)}
.btn-main:hover{color:#04121A;filter:brightness(1.08);box-shadow:0 0 0 1px rgba(18,194,180,.5),0 10px 24px rgba(18,194,180,.3)}
.btn-main:active{transform:translateY(1px)}
.btn-ghost{background:var(--glass);border-color:var(--glass-line-strong);color:var(--txt-0)}
.btn-ghost:hover{background:rgba(18,194,180,.1);border-color:rgba(18,194,180,.4);color:var(--txt-0)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.disabled{opacity:.45;box-shadow:none;pointer-events:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);position:relative}
.link-arrow::after{content:"→";transition:transform .18s ease-out}
.link-arrow:hover::after{transform:translateX(2px)}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px}

/* header */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(6,16,28,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--glass-line);
  transition:background-color .2s ease-out,border-color .2s ease-out;
}
.site-header.is-scrolled{background:rgba(4,11,20,.96);border-bottom-color:rgba(18,194,180,.22)}
.nav-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .2s ease-out}
.site-header.is-scrolled .nav-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--txt-0)}
.brand:hover{color:var(--txt-0)}
.brand-mark{width:32px;height:32px;flex-shrink:0;display:block}
.brand-text{font-size:19px;font-weight:700;white-space:nowrap}
.nav-cats{display:flex;align-items:center;gap:18px;flex-shrink:0}
.nav-cats a{
  font-size:14px;color:var(--txt-1);padding:6px 0;position:relative;
  border-bottom:2px solid transparent;transition:color .18s ease-out,border-color .18s ease-out;
}
.nav-cats a:hover{color:var(--txt-0)}
.nav-cats a.active{color:var(--c-primary);border-bottom-color:var(--c-primary)}
.nav-search{
  flex:1 1 auto;max-width:46%;min-width:220px;
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 6px 0 16px;
  background:var(--glass);border:1px solid var(--glass-line-strong);
  border-radius:var(--r-pill);
  transition:border-color .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out;
}
.nav-search:focus-within{border-color:rgba(18,194,180,.55);box-shadow:0 0 0 3px rgba(18,194,180,.12)}
.nav-search svg{flex-shrink:0;color:var(--txt-2)}
.nav-search input{flex:1;min-width:0;background:transparent;border:0;color:var(--txt-0);font-size:14px}
.nav-search input::placeholder{color:var(--txt-2)}
.nav-search button{
  flex-shrink:0;height:32px;padding:0 16px;border:0;border-radius:var(--r-pill);
  background:var(--grad-btn);color:#04121A;font-weight:600;font-size:13px;cursor:pointer;
}
.nav-search button:hover{filter:brightness(1.07)}
.nav-cta{flex-shrink:0}
.nav-chips{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:0 0 12px;font-size:13px;color:var(--txt-2)}
.nav-chips .chip{
  padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.04);border:1px solid var(--glass-line);color:var(--txt-1);
  transition:color .18s ease-out,border-color .18s ease-out;
}
.nav-chips a.chip:hover{color:var(--c-primary);border-color:rgba(18,194,180,.4)}
.nav-toggle{
  margin-left:auto;width:42px;height:42px;flex-shrink:0;
  display:none;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--glass-line-strong);border-radius:var(--r-btn);cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--txt-0);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--txt-0);border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-panel{display:none;border-top:1px solid var(--glass-line);background:rgba(6,16,28,.98);padding:16px 0 20px}
.mobile-panel.open{display:block}
.mobile-search{display:flex;align-items:center;gap:10px;height:44px;padding:0 14px;background:var(--glass);border:1px solid var(--glass-line-strong);border-radius:var(--r-pill);margin-bottom:16px}
.mobile-search input{flex:1;min-width:0;background:transparent;border:0}
.mobile-links{display:grid;gap:4px}
.mobile-links a{display:block;padding:12px 4px;font-size:15px;color:var(--txt-1);border-bottom:1px solid rgba(255,255,255,.05)}
.mobile-links a.active{color:var(--c-primary)}
.mobile-panel .btn{margin-top:16px}

/* hero */
.hero{padding:72px 0 80px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(28px,4vw,44px);font-weight:700;margin-bottom:20px}
.hero h1 .hl{
  background:linear-gradient(120deg,#12C2B4 0%,#2C63E8 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{color:var(--txt-1);font-size:16px;line-height:1.85;max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.hero-tags span{
  font-size:13px;color:var(--txt-1);padding:6px 14px;
  border-radius:var(--r-pill);background:rgba(255,255,255,.04);border:1px solid var(--glass-line);
}
.hero-visual{position:relative}
.hero-frame{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--glass-line-strong);background:var(--bg-1);
  box-shadow:0 24px 60px rgba(2,8,16,.6);
}
.hero-frame img{width:100%;height:380px;object-fit:cover}
.hero-grid-layer{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:6px 6px;
  opacity:.5;
}
.hero-float{
  position:absolute;left:-18px;bottom:24px;z-index:2;
  background:rgba(8,21,36,.9);border:1px solid var(--glass-line-strong);
  border-radius:var(--r-sm);padding:14px 18px;backdrop-filter:blur(8px);
}
.hero-float strong{display:block;font-size:13px;color:var(--c-primary);font-variant-numeric:tabular-nums}
.hero-float small{color:var(--txt-2);font-size:12px}

/* pain points */
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pain-card{
  position:relative;padding:28px 24px 24px 28px;
  background:var(--glass);border:1px solid var(--glass-line);
  border-radius:var(--r-card);box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.pain-card::before{content:"";position:absolute;left:0;top:28px;width:2px;height:34px;background:var(--c-primary);border-radius:2px}
.pain-num{font-size:13px;color:var(--txt-2);font-variant-numeric:tabular-nums;letter-spacing:.08em;margin-bottom:14px}
.pain-card h3{font-size:18px;margin-bottom:10px}
.pain-card p{color:var(--txt-1);font-size:14px;line-height:1.8;margin-bottom:16px}
.pain-card:hover{transform:translateY(-4px);border-color:rgba(18,194,180,.35);box-shadow:var(--shadow-hover)}

/* solution cards */
.sol-grid{display:grid;grid-template-columns:2fr 1fr;gap:24px}
.sol-main{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--glass-line);background:var(--bg-2);
  display:flex;flex-direction:column;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.sol-main:hover{transform:translateY(-4px);border-color:rgba(18,194,180,.35);box-shadow:var(--shadow-hover)}
.sol-main-cover{position:relative;height:220px;overflow:hidden}
.sol-main-cover img{width:100%;height:100%;object-fit:cover;opacity:.82}
.sol-main-body{padding:28px}
.sol-main-body h3{font-size:22px;margin-bottom:12px}
.sol-main-body p{color:var(--txt-1);font-size:15px;margin-bottom:18px}
.sol-points{display:grid;gap:10px;margin-bottom:22px}
.sol-points li{position:relative;padding-left:20px;color:var(--txt-1);font-size:14px}
.sol-points li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;background:var(--grad-btn)}
.sol-side{display:grid;gap:24px}
.sol-mini{
  padding:24px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--glass-line);
  box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.sol-mini:hover{transform:translateY(-4px);border-color:rgba(18,194,180,.35);box-shadow:var(--shadow-hover)}
.sol-mini h3{font-size:17px;margin-bottom:10px}
.sol-mini p{color:var(--txt-1);font-size:14px;margin-bottom:14px}
.sol-wide{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:24px}
.sol-wide-card{
  display:flex;gap:20px;align-items:center;padding:24px;
  border-radius:var(--r-card);background:var(--glass);border:1px solid var(--glass-line);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.sol-wide-card:hover{transform:translateY(-4px);border-color:rgba(18,194,180,.35);box-shadow:var(--shadow-hover)}
.sol-wide-card img{width:96px;height:96px;border-radius:var(--r-sm);object-fit:cover;flex-shrink:0}
.sol-wide-card h3{font-size:17px;margin-bottom:8px}
.sol-wide-card p{color:var(--txt-1);font-size:14px}

/* stats */
.stats-band{
  position:relative;background:var(--bg-2);
  border-top:1px solid var(--glass-line);border-bottom:1px solid var(--glass-line);
  overflow:hidden;
}
.stats-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:6px 6px;
}
.stats-band::after{
  content:"";position:absolute;right:-10%;top:-40%;width:60%;height:180%;
  background:radial-gradient(closest-side,rgba(18,194,180,.18),transparent);
  pointer-events:none;
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;z-index:1}
.stat-card{padding:28px 8px;text-align:left}
.stat-num{font-size:clamp(36px,4vw,48px);font-weight:700;color:var(--c-accent);font-variant-numeric:tabular-nums;line-height:1}
.stat-unit{font-size:14px;color:var(--txt-1);margin-left:6px}
.stat-note{color:var(--txt-2);font-size:13px;margin-top:12px}

/* posts */
.chips-row{display:flex;gap:10px;flex-wrap:wrap}
.chips-row .chip{
  padding:7px 16px;border-radius:var(--r-pill);font-size:13px;color:var(--txt-1);
  background:var(--glass);border:1px solid var(--glass-line);
  transition:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out;
}
.chips-row a.chip:hover{color:var(--c-primary);border-color:rgba(18,194,180,.45);background:rgba(18,194,180,.08)}
.chips-row .chip.is-on{color:#04121A;background:var(--grad-btn);border-color:transparent;font-weight:600}
.post-card{
  height:100%;display:flex;flex-direction:column;
  background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(18,194,180,.35);box-shadow:var(--shadow-hover)}
.post-cover{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.post-card:hover .post-cover img{transform:scale(1.04)}
.badge-cat{
  position:absolute;left:12px;top:12px;z-index:2;
  font-size:12px;padding:4px 10px;border-radius:var(--r-badge);
  background:rgba(6,16,28,.78);color:var(--c-primary);border:1px solid rgba(18,194,180,.35);
  backdrop-filter:blur(6px);
}
.post-body{padding:20px;display:flex;flex-direction:column;flex:1}
.post-body h3{
  font-size:16px;line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-body h3 a{color:var(--txt-0)}
.post-body h3 a:hover{color:var(--c-primary)}
.post-sum{
  color:var(--txt-1);font-size:13.5px;line-height:1.7;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--txt-2);font-variant-numeric:tabular-nums;margin-top:auto}
.post-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--txt-2)}
.post-more{margin-top:14px;padding-top:14px;border-top:1px solid rgba(255,255,255,.06)}
.empty-state{
  text-align:center;padding:56px 24px;
  background:var(--glass);border:1px dashed var(--glass-line-strong);border-radius:var(--r-card);
}
.empty-state svg{color:var(--txt-2);margin-bottom:16px}
.empty-state p{color:var(--txt-1);font-size:15px;margin-bottom:20px}
.load-more{display:flex;justify-content:center;margin-top:36px}

/* form + privacy */
.form-wrap{
  display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;
}
.form-panel{
  padding:32px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--glass-line-strong);
  backdrop-filter:blur(10px);
}
.form-panel h2{font-size:24px;margin-bottom:10px}
.form-panel .form-lead{color:var(--txt-1);font-size:14px;margin-bottom:24px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--txt-1);margin-bottom:8px}
.field input,.field textarea{
  width:100%;padding:13px 16px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.04);border:1px solid var(--glass-line-strong);color:var(--txt-0);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.field input::placeholder,.field textarea::placeholder{color:var(--txt-2)}
.field input:focus,.field textarea:focus{border-color:rgba(18,194,180,.6);box-shadow:inset 0 0 0 3px rgba(18,194,180,.1)}
.field textarea{resize:vertical;min-height:104px}
.field .hint{font-size:12px;color:var(--txt-2);margin-top:6px}
.form-actions{display:flex;align-items:center;justify-content:flex-end;gap:14px;margin-top:8px;flex-wrap:wrap}
.privacy-grid{display:grid;gap:18px}
.privacy-item{display:flex;gap:16px;padding:20px;border-radius:var(--r-sm);background:rgba(255,255,255,.03);border:1px solid var(--glass-line)}
.privacy-item svg{flex-shrink:0;color:var(--c-primary);margin-top:3px}
.privacy-item h3{font-size:15px;margin-bottom:6px}
.privacy-item p{color:var(--txt-1);font-size:13.5px;line-height:1.7}

/* accordion */
.faq-list{display:grid;gap:12px;max-width:920px;margin:0 auto}
.faq-item{border:1px solid var(--glass-line);border-radius:var(--r-sm);background:var(--glass);overflow:hidden;transition:border-color .2s ease-out}
.faq-item:hover{border-color:rgba(18,194,180,.3)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:16px 22px;background:transparent;border:0;cursor:pointer;
  text-align:left;font-size:15.5px;font-weight:600;color:var(--txt-0);
}
.faq-q .ico{
  position:relative;width:16px;height:16px;flex-shrink:0;
}
.faq-q .ico::before,.faq-q .ico::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
  transition:transform .2s ease-out,opacity .2s ease-out;
}
.faq-q .ico::before{left:0;top:7px;width:16px;height:2px}
.faq-q .ico::after{top:0;left:7px;width:2px;height:16px}
.faq-q[aria-expanded="true"] .ico::after{transform:rotate(90deg);opacity:0}
.faq-a{padding:0 22px 20px;color:var(--txt-1);font-size:14.5px;line-height:1.85;border-top:1px solid rgba(255,255,255,.06);padding-top:18px;margin-top:0}

/* cta strip */
.cta-strip{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  padding:32px;border-radius:var(--r-card);
  background:linear-gradient(120deg,rgba(18,194,180,.12) 0%,rgba(44,99,232,.12) 100%);
  border:1px solid rgba(18,194,180,.25);
}
.cta-strip h3{font-size:20px;margin-bottom:6px}
.cta-strip p{color:var(--txt-1);font-size:14px}

/* modal */
.modal-content.custom-modal{
  background:var(--bg-1);border:1px solid var(--glass-line-strong);border-radius:var(--r-card);
  color:var(--txt-0);box-shadow:0 32px 80px rgba(2,8,16,.7);
}
.modal-header{border-bottom:1px solid var(--glass-line);padding:20px 24px}
.modal-title{font-size:18px;font-weight:700}
.modal-header .btn-close{filter:invert(1) grayscale(1);opacity:.7}
.modal-body{padding:24px;max-height:70vh;overflow-y:auto}
.modal-footer{border-top:1px solid var(--glass-line);padding:16px 24px}
.modal-backdrop.show{opacity:.72}
.check-row{display:flex;gap:12px;align-items:flex-start;margin-top:16px}
.check-row input{width:18px;height:18px;flex-shrink:0;margin-top:3px;accent-color:var(--c-primary)}
.check-row label{font-size:13px;color:var(--txt-1);line-height:1.65;margin:0}
.modal-privacy{font-size:12.5px;color:var(--txt-2);line-height:1.7;margin-top:16px;padding-top:16px;border-top:1px solid var(--glass-line)}

/* footer */
.site-footer{background:#040B14;border-top:1px solid var(--glass-line);padding:64px 0 0;position:relative}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:0}
.footer-col{padding:0 28px 40px;border-right:1px solid rgba(255,255,255,.06)}
.footer-col:first-child{padding-left:0}
.footer-col:last-child{border-right:0;padding-right:0}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-text{font-size:17px}
.footer-about{color:var(--txt-1);font-size:13.5px;line-height:1.8;max-width:300px}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--txt-0)}
.footer-links{display:grid;gap:12px}
.footer-links a{font-size:13.5px;color:var(--txt-1)}
.footer-links a:hover{color:var(--c-primary)}
.footer-contact{display:grid;gap:14px}
.footer-contact li{font-size:13.5px;color:var(--txt-1);line-height:1.7}
.footer-contact li span{display:block;color:var(--txt-2);font-size:12px;margin-bottom:2px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--txt-2);
}
.footer-bottom .copy{display:flex;gap:16px;flex-wrap:wrap;align-items:center}
.back-top{
  display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--glass-line-strong);color:var(--txt-1);font-size:12.5px;
  transition:color .18s ease-out,border-color .18s ease-out;
}
.back-top:hover{color:var(--c-primary);border-color:rgba(18,194,180,.45)}

@media (max-width:1199px){
  :root{--sec-y:72px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-frame img{height:320px}
  .nav-search{max-width:38%}
}
@media (max-width:991px){
  :root{--sec-y:72px}
  .nav-cats,.nav-search,.nav-cta,.nav-chips{display:none!important}
  .nav-toggle{display:flex}
  .pain-grid{grid-template-columns:repeat(2,1fr)}
  .sol-grid{grid-template-columns:1fr}
  .sol-wide{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .form-wrap{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:0}
  .footer-col{border-right:0;border-bottom:1px solid rgba(255,255,255,.06);padding:24px 0}
  .footer-col:first-child{padding-left:0}
}
@media (max-width:767px){
  :root{--sec-y:56px}
  .container{padding-left:16px;padding-right:16px}
  .hero{padding:48px 0 56px}
  .hero-frame img{height:240px}
  .hero-float{left:12px;bottom:12px;padding:10px 14px}
  .pain-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat-card{padding:18px 4px}
  .form-panel{padding:22px}
  .form-row{grid-template-columns:1fr}
  .cta-strip{padding:24px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{justify-content:center;text-align:center}
  .sol-wide-card{flex-direction:column;align-items:flex-start}
  .sol-wide-card img{width:100%;height:160px}
  .sec-head-row{align-items:flex-start}
}
@media (max-width:519px){
  .brand-text{font-size:16px}
  .hero-actions .btn{width:100%}
  .stats-grid{grid-template-columns:1fr}
  .post-meta{flex-wrap:wrap;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --primary:#12C2B4;
  --primary-dim:rgba(18,194,180,.14);
  --secondary:#2C63E8;
  --accent:#F0A93B;
  --bg:#06101C;
  --bg-alt:#081524;
  --bg-alt2:#0A1A2B;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#EAF2FA;
  --text-2:#A7B6C8;
  --text-3:#6E8091;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04);
  --shadow-hover:0 0 0 1px rgba(18,194,180,.35), 0 8px 28px rgba(18,194,180,.18);
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:110px;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease-out,opacity .18s ease-out;}
a:hover{color:#3ad8ca;}
button,input,textarea,select{font-family:inherit;}
h1,h2,h3,h4{line-height:1.3;font-weight:700;margin:0;letter-spacing:0;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
::selection{background:rgba(18,194,180,.28);color:#fff;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

.container{width:100%;max-width:1200px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(6,16,28,.84);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background .2s ease-out;
}
.site-header.scrolled{background:rgba(6,16,28,.96);}
.header-inner{
  display:flex;align-items:center;gap:22px;
  height:72px;
  transition:height .2s ease-out;
}
.site-header.scrolled .header-inner{height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{width:32px;height:32px;flex:0 0 32px;}
.brand-text{font-size:19px;font-weight:700;white-space:nowrap;}
.nav-cats{display:flex;align-items:center;gap:20px;flex:0 1 auto;}
.nav-cats a{
  position:relative;
  color:var(--text-2);
  font-size:15px;
  padding:6px 0;
  white-space:nowrap;
  transition:color .18s ease-out;
}
.nav-cats a::after{
  content:"";position:absolute;left:0;bottom:0;
  width:0;height:2px;background:var(--primary);
  transition:width .22s ease-out;
}
.nav-cats a:hover{color:var(--text);}
.nav-cats a:hover::after{width:100%;}
.nav-cats a.is-active{color:var(--primary);}
.nav-cats a.is-active::after{width:100%;}
.header-search{flex:1 1 40%;max-width:520px;min-width:200px;}
.search-box{
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 6px 0 16px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:999px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.search-box:focus-within{
  border-color:rgba(18,194,180,.55);
  box-shadow:0 0 0 3px rgba(18,194,180,.14);
}
.search-box svg{width:18px;height:18px;flex:0 0 18px;stroke:var(--text-3);fill:none;stroke-width:2;stroke-linecap:round;}
.search-box input{
  flex:1 1 auto;min-width:0;
  height:40px;background:transparent;border:0;outline:none;
  color:var(--text);font-size:14.5px;
}
.search-box input::placeholder{color:var(--text-3);}
.search-box button{
  flex:0 0 auto;height:32px;padding:0 16px;
  border:0;border-radius:999px;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#04191b;font-size:13.5px;font-weight:700;cursor:pointer;
  transition:filter .18s ease-out,transform .12s ease-out;
}
.search-box button:hover{filter:brightness(1.08);}
.search-box button:active{transform:translateY(1px);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:transform .16s ease-out,box-shadow .18s ease-out,filter .18s ease-out,background .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.btn-primary-glow{
  background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);
  color:#04191b;
  box-shadow:0 0 0 0 rgba(18,194,180,0);
}
.btn-primary-glow:hover{
  color:#04191b;filter:brightness(1.08);
  box-shadow:0 0 12px rgba(18,194,180,.5);
}
.btn-primary-glow:active{transform:translateY(1px);}
.btn-ghost{
  background:var(--glass);
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{
  color:var(--text);
  border-color:rgba(18,194,180,.5);
  background:var(--glass-strong);
}
.btn:disabled,.btn.disabled{opacity:.45;box-shadow:none;pointer-events:none;}
.header-cta{flex:0 0 auto;height:42px;padding:0 20px;font-size:14.5px;}
.nav-toggle{
  display:none;flex:0 0 auto;
  width:44px;height:44px;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-sm);
  cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-nav{border-top:1px solid var(--line);background:rgba(6,16,28,.98);}
.mobile-nav .inner{padding:18px 0 22px;display:flex;flex-direction:column;gap:14px;}
.mobile-cats{display:flex;flex-direction:column;gap:2px;}
.mobile-cats a{
  color:var(--text-2);font-size:15px;padding:11px 0;border-bottom:1px solid var(--line);
}
.mobile-cats a.is-active{color:var(--primary);}
.mobile-cats a:last-child{border-bottom:0;}

/* ---------- buttons small ---------- */
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--primary);
}
.link-arrow:hover{text-decoration:underline;text-underline-offset:3px;}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;padding:64px 0 60px;border-bottom:1px solid var(--line);}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity:.2;
}
.page-hero .hero-mask{
  position:absolute;inset:0;
  background:
    linear-gradient(90deg,rgba(6,16,28,.95) 0%,rgba(6,16,28,.82) 52%,rgba(6,16,28,.58) 100%),
    radial-gradient(circle at 84% 16%,rgba(18,194,180,.18),transparent 56%);
}
.page-hero .hero-grid{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 88%);
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 88%);
}
.page-hero .container{position:relative;z-index:2;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:22px;}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--primary);}
.crumb .cur{color:var(--primary);}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;margin-bottom:18px;
  border:1px solid rgba(18,194,180,.32);
  border-radius:999px;
  background:rgba(18,194,180,.08);
  color:var(--primary);font-size:13px;font-weight:600;
}
.hero-eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--primary);display:inline-block;
  box-shadow:0 0 8px rgba(18,194,180,.9);}
.page-hero h1{
  font-size:clamp(28px,4vw,44px);
  font-weight:700;
  max-width:820px;
  margin-bottom:18px;
}
.page-hero .lead{
  max-width:720px;
  font-size:17px;
  color:var(--text-2);
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag-chip{
  display:inline-flex;align-items:center;gap:6px;
  height:32px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;
  background:var(--glass);
  color:var(--text-2);font-size:13.5px;
}
.tag-chip b{color:var(--primary);font-weight:600;}

/* ---------- stats band ---------- */
.stats-band{
  background:var(--bg-alt);
  border-bottom:1px solid var(--line);
  padding:38px 0;
  position:relative;
  overflow:hidden;
}
.stats-band::after{
  content:"";position:absolute;top:-60px;right:-40px;width:320px;height:320px;
  background:radial-gradient(circle,rgba(44,99,232,.22),transparent 68%);
  pointer-events:none;
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;z-index:1;}
.stat-item{border-left:2px solid rgba(18,194,180,.4);padding-left:16px;}
.stat-num{
  font-size:38px;font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;
  line-height:1.1;
}
.stat-num small{font-size:15px;font-weight:600;color:var(--text-2);margin-left:4px;}
.stat-label{font-size:14px;color:var(--text-3);margin-top:6px;}

/* ---------- main layout ---------- */
.main-wrap{padding:var(--space-section) 0;}
.anchor-nav{
  position:sticky;top:96px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:20px 18px;
}
.anchor-title{
  font-size:13px;letter-spacing:0;color:var(--text-3);
  font-weight:600;margin:0 0 12px;padding-bottom:12px;
  border-bottom:1px solid var(--line);
}
.anchor-link{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;margin:0 -10px;
  border-radius:var(--radius-sm);
  color:var(--text-2);font-size:14.5px;
  transition:background .18s ease-out,color .18s ease-out;
}
.anchor-link span{font-variant-numeric:tabular-nums;color:var(--text-3);font-size:13px;}
.anchor-link:hover{background:var(--glass-strong);color:var(--text);}
.anchor-link.is-active{color:var(--primary);background:rgba(18,194,180,.09);}
.anchor-link.is-active span{color:var(--primary);}
.anchor-cta{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);}
.anchor-cta p{font-size:13px;color:var(--text-3);margin-bottom:10px;}
.anchor-cta .btn{width:100%;height:40px;font-size:14px;}

.content-block{
  padding-bottom:52px;
  margin-bottom:52px;
  border-bottom:1px solid var(--line);
}
.content-block:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0;}
.block-head{display:flex;align-items:baseline;gap:14px;margin-bottom:20px;}
.block-num{
  font-size:14px;font-weight:700;color:var(--primary);
  font-variant-numeric:tabular-nums;
  padding:3px 10px;border-radius:6px;
  background:rgba(18,194,180,.1);
  border:1px solid rgba(18,194,180,.24);
  flex:0 0 auto;
}
.content-block h2{
  font-size:clamp(22px,2.6vw,30px);
  font-weight:700;
}
.content-block h3{
  font-size:18px;font-weight:600;margin:26px 0 10px;color:var(--text);
}
.content-block p{color:var(--text-2);font-size:16px;}
.point-list{list-style:none;padding:0;margin:18px 0 0;}
.point-list li{
  position:relative;
  padding:12px 0 12px 22px;
  border-bottom:1px dashed var(--line);
  color:var(--text-2);font-size:15px;
}
.point-list li:last-child{border-bottom:0;}
.point-list li::before{
  content:"";position:absolute;left:2px;top:21px;
  width:8px;height:2px;background:var(--primary);
}
.point-list li b{color:var(--text);font-weight:600;}

.mini-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:22px;}
.mini-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:20px 20px 18px;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.mini-card:hover{
  transform:translateY(-4px);
  border-color:rgba(18,194,180,.35);
  box-shadow:var(--shadow-hover);
}
.mini-card h4{font-size:16px;margin-bottom:8px;font-weight:600;}
.mini-card p{font-size:14.5px;color:var(--text-3);margin:0;}

.note-strip{
  margin-top:24px;
  display:flex;gap:16px;align-items:flex-start;
  background:linear-gradient(90deg,rgba(18,194,180,.09),rgba(18,194,180,0));
  border-left:3px solid var(--primary);
  border-radius:0 var(--radius-md) var(--radius-md) 0;
  padding:18px 20px;
}
.note-strip .ico{
  flex:0 0 36px;width:36px;height:36px;border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;
  background:rgba(18,194,180,.14);
}
.note-strip .ico svg{width:18px;height:18px;stroke:var(--primary);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.note-strip p{font-size:14.5px;color:var(--text-2);margin:0;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,var(--bg-alt2) 0%,#071322 100%);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band::before{
  content:"";position:absolute;left:-80px;bottom:-120px;width:320px;height:320px;
  background:radial-gradient(circle,rgba(18,194,180,.2),transparent 68%);
}
.cta-band .cta-copy{position:relative;z-index:1;max-width:620px;}
.cta-band h2{font-size:clamp(20px,2.3vw,26px);margin-bottom:10px;}
.cta-band p{color:var(--text-2);font-size:15px;margin:0;}
.cta-band .cta-actions{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- related ---------- */
.related-wrap{padding:0 0 var(--space-section);}
.section-title-row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:28px;
}
.section-title-row h2{font-size:clamp(22px,2.6vw,30px);}
.section-title-row .sub{color:var(--text-3);font-size:14.5px;margin-top:8px;}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-card{
  display:flex;flex-direction:column;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.rel-card:hover{
  transform:translateY(-4px);
  border-color:rgba(18,194,180,.35);
  box-shadow:var(--shadow-hover);
}
.rel-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-alt2);}
.rel-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.rel-card:hover .rel-cover img{transform:scale(1.04);}
.rel-badge{
  position:absolute;left:12px;top:12px;
  height:24px;padding:0 10px;display:inline-flex;align-items:center;
  border-radius:6px;font-size:12px;font-weight:600;
  background:rgba(6,16,28,.82);color:var(--primary);
  border:1px solid rgba(18,194,180,.35);
  backdrop-filter:blur(6px);
}
.rel-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.rel-body h3{
  font-size:17px;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  color:var(--text);
}
.rel-body p{
  font-size:14px;color:var(--text-3);margin:0;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.rel-body .link-arrow{margin-top:auto;}

/* ---------- footer ---------- */
.site-footer{
  background:#040b14;
  border-top:1px solid var(--line);
  padding:64px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:0;
}
.footer-col{padding:0 28px;border-right:1px solid var(--line);}
.footer-col:first-child{padding-left:0;}
.footer-col:last-child{border-right:0;padding-right:0;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:32px;height:32px;}
.footer-about{font-size:14.5px;color:var(--text-3);line-height:1.8;margin:0;max-width:340px;}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--text);}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{color:var(--text-2);font-size:14.5px;}
.footer-links a:hover{color:var(--primary);}
.footer-contact{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px;}
.footer-contact li{font-size:14px;color:var(--text-2);line-height:1.7;}
.footer-contact li span{
  display:block;font-size:12.5px;color:var(--text-3);margin-bottom:2px;
}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom .copy{display:flex;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--text-3);}
.back-top{font-size:13px;color:var(--text-2);}
.back-top:hover{color:var(--primary);}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .nav-cats{gap:14px;}
  .nav-cats a{font-size:14px;}
  .header-search{max-width:420px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px 0;}
  .footer-col:nth-child(3){border-right:0;}
  .footer-col:nth-child(4){border-right:0;padding-left:0;grid-column:1 / -1;margin-top:28px;padding-top:24px;border-top:1px solid var(--line);}
}
@media (max-width:991.98px){
  .nav-cats,.header-search,.header-cta{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{justify-content:space-between;height:64px;gap:14px;}
  .site-header.scrolled .header-inner{height:58px;}
  .main-wrap{padding:64px 0;}
  .anchor-nav{position:static;margin-bottom:36px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 26px;}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 0;}
  .footer-col{padding:0 22px;}
  .footer-col:nth-child(2){border-right:0;}
  .footer-col:nth-child(4){grid-column:1 / -1;margin-top:24px;padding-left:0;padding-top:24px;}
}
@media (max-width:767.98px){
  .container{padding-left:18px;padding-right:18px;}
  .page-hero{padding:44px 0 44px;}
  .page-hero .lead{font-size:15.5px;}
  .main-wrap{padding:56px 0;}
  .content-block{padding-bottom:38px;margin-bottom:38px;}
  .mini-cards{grid-template-columns:1fr;}
  .rel-grid{grid-template-columns:1fr;}
  .cta-band{padding:30px 22px;gap:22px;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn{flex:1 1 auto;}
  .site-footer{padding:48px 0 22px;}
  .footer-grid{grid-template-columns:1fr;gap:0;}
  .footer-col{padding:0;border-right:0;border-bottom:1px solid var(--line);padding-bottom:22px;margin-bottom:22px;}
  .footer-col:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0;}
  .footer-col:nth-child(4){margin-top:0;padding-top:0;border-top:0;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
}
@media (max-width:575.98px){
  .page-hero h1{font-size:26px;}
  .hero-actions .btn{width:100%;}
  .stats-grid{grid-template-columns:1fr;gap:16px;}
  .stat-num{font-size:32px;}
  .block-head{flex-direction:column;gap:10px;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --cloud:#12C2B4;
  --sky:#2C63E8;
  --amber:#F0A93B;
  --bg:#06101C;
  --bg-alt:#081524;
  --bg-alt2:#0A1A2B;
  --glass:rgba(255,255,255,.045);
  --stroke:rgba(255,255,255,.08);
  --stroke-strong:rgba(255,255,255,.14);
  --text:#EAF2FA;
  --text-2:#A7B6C8;
  --text-3:#6E8091;
  --r-card:16px;
  --r-sm:12px;
  --r-btn:10px;
  --r-pill:999px;
  --r-badge:6px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04);
  --shadow-hover:0 0 0 1px rgba(18,194,180,.35),0 8px 28px rgba(18,194,180,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
}

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

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

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

a{color:inherit;text-decoration:none;transition:color .18s var(--ease);}
img{max-width:100%;height:auto;display:block;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding-left:0;list-style:none;}
svg{display:block;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),filter .18s var(--ease);
}
.btn:focus-visible{outline:2px solid var(--amber);outline-offset:2px;}
.btn-primary{
  background:linear-gradient(135deg,#12C2B4 0%,#2C63E8 100%);
  color:#04121C;
  box-shadow:0 6px 20px rgba(18,194,180,.22);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 8px 26px rgba(18,194,180,.32);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 12px rgba(18,194,180,.2);}
.btn-ghost{
  background:var(--glass);
  border-color:var(--stroke);
  color:var(--text);
}
.btn-ghost:hover{border-color:rgba(18,194,180,.4);color:var(--cloud);background:rgba(18,194,180,.07);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn[disabled]{opacity:.45;pointer-events:none;box-shadow:none;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(6,16,28,.86);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--stroke);
  transition:background .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,16,28,.96);
  box-shadow:0 8px 24px rgba(0,0,0,.32);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:22px;
  height:72px;
  transition:height .2s var(--ease);
}
.site-header.is-scrolled .header-inner{height:60px;}

.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:32px;height:32px;}
.brand-text{font-size:19px;font-weight:700;color:var(--text);letter-spacing:0;}

.nav-cats{display:flex;align-items:center;gap:20px;flex-shrink:0;}
.nav-cats a{
  position:relative;
  font-size:14.5px;
  color:var(--text-2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-cats a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--cloud);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-cats a:hover{color:var(--text);}
.nav-cats a:hover::after,
.nav-cats a.active::after{transform:scaleX(1);}
.nav-cats a.active{color:var(--cloud);}

.nav-search{
  position:relative;
  flex:1 1 auto;
  max-width:480px;
  min-width:170px;
  margin:0 auto;
}
.nav-search svg{
  position:absolute;
  left:16px;
  top:50%;
  transform:translateY(-50%);
  width:18px;height:18px;
  color:var(--text-3);
  pointer-events:none;
}
.nav-search input{
  width:100%;
  height:44px;
  border-radius:var(--r-pill);
  border:1px solid var(--stroke);
  background:var(--glass);
  color:var(--text);
  padding:0 18px 0 44px;
  font-size:14.5px;
  outline:none;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input:focus{
  border-color:rgba(18,194,180,.55);
  box-shadow:0 0 0 3px rgba(18,194,180,.14);
  background:rgba(255,255,255,.065);
}
.nav-search input::-webkit-search-cancel-button{-webkit-appearance:none;}

.btn-cta{height:42px;padding:0 20px;font-size:14.5px;flex-shrink:0;}

.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:var(--r-btn);
  border:1px solid var(--stroke);
  background:var(--glass);
  color:var(--text);
  align-items:center;
  justify-content:center;
  cursor:pointer;
  flex-shrink:0;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:rgba(18,194,180,.4);color:var(--cloud);}
.nav-toggle svg{width:20px;height:20px;}

.nav-drawer{display:none;}
.nav-drawer.open{display:block;border-top:1px solid var(--stroke);padding:16px 0 18px;}
.nav-search.is-mobile{max-width:none;margin:0 0 14px;display:block;}
.mobile-cats{display:flex;flex-direction:column;}
.mobile-cats a{
  padding:11px 2px;
  font-size:15px;
  color:var(--text-2);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.mobile-cats a:last-child{border-bottom:0;}
.mobile-cats a:hover{color:var(--cloud);}
.drawer-cta{width:100%;margin-top:14px;}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;
  overflow:hidden;
  padding:52px 0 40px;
  background:#081524 url('/assets/images/backpic/back-2.png') right -40px center/cover no-repeat;
  border-bottom:1px solid var(--stroke);
}
.article-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(95deg,rgba(6,16,28,.97) 0%,rgba(6,16,28,.9) 48%,rgba(6,16,28,.7) 100%);
}
.article-hero .container{position:relative;z-index:1;}

.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--text-3);
  margin-bottom:22px;
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--cloud);}
.crumb .sep{opacity:.5;}
.crumb .current{
  color:var(--text-2);
  max-width:360px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

.article-title{
  font-size:clamp(28px,3.8vw,42px);
  line-height:1.28;
  font-weight:700;
  letter-spacing:0;
  max-width:900px;
  margin-bottom:20px;
}

.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 16px;
  font-size:13.5px;
  color:var(--text-3);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);opacity:.6;}
.chip-cat{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 10px;
  border-radius:var(--r-badge);
  font-size:12.5px;
  color:var(--cloud);
  border:1px solid rgba(18,194,180,.32);
  background:rgba(18,194,180,.09);
}

/* ---------- 正文布局 ---------- */
.article-main{padding:56px 0 72px;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:48px;
}

.prose{
  font-size:17px;
  line-height:1.85;
  color:#D6E2EE;
  max-width:820px;
}
.prose p{margin:0 0 1.2em;}
.prose h2{
  font-size:clamp(21px,2.4vw,26px);
  line-height:1.35;
  font-weight:600;
  color:var(--text);
  margin:2.2em 0 .9em;
  padding-left:14px;
  border-left:3px solid var(--cloud);
}
.prose h3{
  font-size:19px;
  font-weight:600;
  color:var(--text);
  margin:1.9em 0 .7em;
}
.prose h4{
  font-size:17px;
  font-weight:600;
  color:var(--text);
  margin:1.6em 0 .6em;
}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.4em;}
.prose ul{list-style:disc;}
.prose ol{list-style:decimal;}
.prose li{margin:.45em 0;padding-left:2px;}
.prose ul li::marker{color:var(--cloud);}
.prose ol li::marker{color:var(--cloud);font-variant-numeric:tabular-nums;}
.prose blockquote{
  margin:1.6em 0;
  padding:16px 20px;
  border-left:3px solid var(--cloud);
  background:rgba(18,194,180,.07);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--text-2);
  box-shadow:0 0 20px rgba(18,194,180,.08);
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose strong{color:#FFFFFF;font-weight:600;}
.prose img{
  border-radius:var(--r-sm);
  margin:1.6em auto;
  box-shadow:0 8px 28px rgba(0,0,0,.35);
}
.prose figure{margin:1.8em 0;}
.prose figcaption{
  font-size:13px;
  color:var(--text-3);
  text-align:center;
  margin-top:10px;
}
.prose a{
  color:var(--cloud);
  border-bottom:1px solid rgba(18,194,180,.35);
}
.prose a:hover{border-bottom-color:var(--cloud);}
.prose hr{border:0;border-top:1px solid var(--stroke);margin:2.4em 0;}
.prose table{
  width:100%;
  border-collapse:separate;
  border-spacing:0;
  margin:1.6em 0;
  font-size:14.5px;
  border:1px solid var(--stroke);
  border-radius:var(--r-sm);
  overflow:hidden;
}
.prose thead th{
  background:rgba(255,255,255,.05);
  color:var(--text);
  font-weight:600;
  text-align:left;
  padding:12px 16px;
  border-bottom:1px solid var(--stroke);
}
.prose tbody td{
  padding:12px 16px;
  border-bottom:1px solid rgba(255,255,255,.05);
  color:var(--text-2);
}
.prose tbody tr:last-child td{border-bottom:0;}
.prose code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:14px;
  background:rgba(255,255,255,.07);
  border:1px solid var(--stroke);
  border-radius:6px;
  padding:1px 6px;
  color:#9FE9E1;
}

/* ---------- 空状态 ---------- */
.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  text-align:center;
  gap:16px;
  padding:64px 24px;
  border:1px dashed var(--stroke-strong);
  border-radius:var(--r-card);
  background:var(--glass);
}
.empty-state svg{width:48px;height:48px;color:var(--text-3);}
.empty-state p{color:var(--text-2);font-size:15px;margin:0;}

/* ---------- 底部返回入口 ---------- */
.post-return{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:44px;
  padding-top:28px;
  border-top:1px solid var(--stroke);
}
.post-return .btn{height:44px;font-size:14.5px;padding:0 20px;}

/* ---------- 侧栏 ---------- */
.article-aside{
  display:flex;
  flex-direction:column;
  gap:20px;
}
.aside-card{
  border:1px solid var(--stroke);
  background:var(--glass);
  border-radius:var(--r-card);
  padding:20px 20px 18px;
  box-shadow:var(--shadow-card);
}
.aside-card h3{
  display:flex;
  align-items:center;
  gap:9px;
  font-size:15px;
  font-weight:600;
  color:var(--text);
  margin-bottom:14px;
}
.aside-card h3::before{
  content:"";
  width:3px;
  height:14px;
  border-radius:2px;
  background:var(--cloud);
}
.aside-links{display:flex;flex-direction:column;}
.aside-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  font-size:14.5px;
  color:var(--text-2);
  padding:9px 0;
  border-bottom:1px solid rgba(255,255,255,.05);
  transition:color .18s var(--ease),padding-left .18s var(--ease);
}
.aside-links a:last-child{border-bottom:0;}
.aside-links a:hover{color:var(--cloud);padding-left:4px;}
.aside-links a span{color:var(--text-3);font-size:13px;}

.aside-cta{
  background:linear-gradient(158deg,rgba(18,194,180,.15) 0%,rgba(44,99,232,.1) 100%);
  border-color:rgba(18,194,180,.28);
}
.aside-cta p{
  font-size:14px;
  color:var(--text-2);
  line-height:1.75;
  margin-bottom:16px;
}
.aside-cta .btn{width:100%;height:44px;font-size:14.5px;}

.aside-notes{display:flex;flex-direction:column;gap:12px;}
.aside-notes li{
  font-size:13.5px;
  color:var(--text-2);
  line-height:1.7;
  padding-left:14px;
  position:relative;
}
.aside-notes li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:5px;height:5px;
  border-radius:50%;
  background:var(--cloud);
  opacity:.75;
}
.aside-notes li span{
  display:block;
  color:var(--text-3);
  font-size:12.5px;
  margin-bottom:2px;
}

/* ---------- 相关栏目 ---------- */
.related-section{
  padding:72px 0 0;
  border-top:1px solid var(--stroke);
  background:var(--bg-alt);
}
.section-head{margin-bottom:32px;}
.section-head h2{
  font-size:clamp(22px,2.4vw,28px);
  font-weight:600;
  line-height:1.35;
  margin-bottom:10px;
}
.section-head p{
  font-size:15px;
  color:var(--text-2);
  max-width:640px;
}

.rel-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:22px;
}
.rel-card{
  display:flex;
  flex-direction:column;
  border:1px solid var(--stroke);
  background:var(--glass);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.rel-card:hover{
  transform:translateY(-4px);
  border-color:rgba(18,194,180,.35);
  box-shadow:var(--shadow-hover);
}
.rel-thumb{position:relative;background:var(--bg-alt2);}
.rel-thumb img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
}
.rel-badge{
  position:absolute;
  left:12px;top:12px;
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 9px;
  border-radius:var(--r-badge);
  font-size:12px;
  color:#BFF3EE;
  background:rgba(6,16,28,.7);
  border:1px solid rgba(18,194,180,.34);
  backdrop-filter:blur(6px);
}
.rel-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.rel-body h3{
  font-size:16.5px;
  font-weight:600;
  line-height:1.5;
  color:var(--text);
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-body p{
  font-size:14px;
  color:var(--text-2);
  line-height:1.7;
  margin-bottom:14px;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-more{
  margin-top:auto;
  font-size:13.5px;
  color:var(--cloud);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.rel-card:hover .rel-more{gap:10px;}

/* ---------- 底部 CTA ---------- */
.article-cta{padding:56px 0 88px;}
.cta-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:22px;
  padding:30px 32px;
  border-radius:var(--r-card);
  border:1px solid rgba(18,194,180,.26);
  background:linear-gradient(118deg,rgba(18,194,180,.13) 0%,rgba(44,99,232,.1) 100%);
}
.cta-bar h3{
  font-size:19px;
  font-weight:600;
  margin-bottom:8px;
}
.cta-bar p{
  font-size:14.5px;
  color:var(--text-2);
  max-width:620px;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#040B14;
  border-top:1px solid var(--stroke);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1.25fr;
  gap:32px;
  padding:64px 0 42px;
}
.footer-col + .footer-col{
  border-left:1px solid rgba(255,255,255,.06);
  padding-left:32px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.footer-brand .brand-text{font-size:18px;}
.footer-about{
  font-size:14px;
  line-height:1.8;
  color:var(--text-2);
  max-width:370px;
}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:var(--text);
  margin-bottom:18px;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{
  font-size:14px;
  color:var(--text-2);
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-links a:hover{color:var(--cloud);transform:translateX(2px);}
.footer-contact{display:flex;flex-direction:column;gap:13px;}
.footer-contact li{
  font-size:13.5px;
  color:var(--text-2);
  line-height:1.7;
}
.footer-contact li span{
  display:block;
  font-size:12.5px;
  color:var(--text-3);
  margin-bottom:2px;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:22px 0 30px;
  border-top:1px solid rgba(255,255,255,.06);
  font-size:13px;
  color:var(--text-3);
}
.copy{display:flex;flex-wrap:wrap;gap:6px 20px;}
.back-top{
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--stroke);
  color:var(--text-2);
  font-size:13px;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.back-top:hover{
  color:var(--cloud);
  border-color:rgba(18,194,180,.42);
  background:rgba(18,194,180,.07);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .article-layout{gap:44px;}
  .article-aside{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
    gap:20px;
  }
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr;gap:28px;}
  .footer-col:nth-child(4){
    border-left:0;
    padding-left:0;
    grid-column:1 / -1;
    border-top:1px solid rgba(255,255,255,.06);
    padding-top:24px;
  }
}

@media (max-width:991.98px){
  .header-inner{gap:14px;height:64px;}
  .site-header.is-scrolled .header-inner{height:58px;}
  .nav-cats{display:none;}
  .header-inner .nav-search{display:none;}
  .header-inner .btn-cta{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .brand-text{font-size:18px;}
  .article-hero{padding:40px 0 32px;}
  .article-main{padding:44px 0 56px;}
  .related-section{padding:56px 0 0;}
  .article-cta{padding:44px 0 64px;}
  .footer-grid{grid-template-columns:1fr 1fr;padding:48px 0 32px;}
  .footer-col + .footer-col{border-left:0;padding-left:0;}
  .footer-col:nth-child(4){grid-column:auto;}
  .cta-bar{padding:26px 24px;}
}

@media (max-width:575.98px){
  .container{padding:0 16px;}
  .brand-text{font-size:17px;}
  .brand-mark{width:28px;height:28px;}
  .article-title{margin-bottom:16px;}
  .crumb .current{max-width:200px;}
  .prose{font-size:16px;}
  .post-return{flex-direction:column;}
  .post-return .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .article-cta{padding:36px 0 56px;}
  .cta-bar{flex-direction:column;align-items:flex-start;}
  .cta-bar .btn{width:100%;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: category2 */
:root{
  --primary:#12C2B4;
  --primary-soft:rgba(18,194,180,.14);
  --second:#2C63E8;
  --accent:#F0A93B;
  --bg:#06101C;
  --bg-alt:#081524;
  --bg-alt2:#0A1A2B;
  --glass:rgba(255,255,255,.045);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#EAF2FA;
  --text-2:#A7B6C8;
  --text-3:#6E8091;
  --r-card:16px;
  --r-sm:12px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04);
  --shadow-hover:0 0 0 1px rgba(18,194,180,.35), 0 8px 28px rgba(18,194,180,.18);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  --sec-y:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);font-size:16px;line-height:1.75;
  color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.3;letter-spacing:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .18s ease-out}
img{max-width:100%;height:auto;display:block}
button,input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:rgba(18,194,180,.32);color:#fff}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;
  transition:all .2s ease-out;white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--second));
  color:#04141F;box-shadow:0 0 12px rgba(18,194,180,.32);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 16px rgba(18,194,180,.46)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 8px rgba(18,194,180,.3)}
.btn-ghost{background:var(--glass);border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:rgba(18,194,180,.5);color:var(--primary)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(6,16,28,.9);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .2s ease-out}
.site-header.scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:32px;height:32px;flex:0 0 auto}
.brand-text{font-size:19px;font-weight:700;letter-spacing:0;white-space:nowrap}
.nav-cats{display:flex;align-items:center;gap:18px;flex:0 0 auto}
.nav-cats a{
  position:relative;font-size:14px;color:var(--text-2);padding:6px 0;white-space:nowrap;
}
.nav-cats a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--primary);transition:width .2s ease-out;border-radius:2px;
}
.nav-cats a:hover{color:var(--text)}
.nav-cats a:hover::after{width:100%}
.nav-cats a.active{color:var(--primary)}
.nav-cats a.active::after{width:100%}
.nav-search{
  position:relative;display:flex;align-items:center;gap:8px;
  flex:1 1 260px;max-width:520px;min-width:0;
  height:44px;padding:0 16px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--line);
  transition:border-color .2s ease-out, box-shadow .2s ease-out;
}
.nav-search:focus-within{
  border-color:rgba(18,194,180,.55);
  box-shadow:0 0 0 3px rgba(18,194,180,.12) inset, 0 0 12px rgba(18,194,180,.2);
}
.nav-search svg{width:18px;height:18px;flex:0 0 auto;color:var(--text-3)}
.nav-search input{
  flex:1 1 auto;min-width:0;height:100%;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3)}
.search-tag{
  flex:0 0 auto;font-size:12px;color:var(--primary);
  background:var(--primary-soft);border:1px solid rgba(18,194,180,.3);
  padding:2px 10px;border-radius:var(--r-pill);
}
.nav-cta{flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  background:var(--glass);border:1px solid var(--line);cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s ease-out}
.mobile-panel{display:none;padding-bottom:18px}
.mobile-panel.open{display:block}
.mobile-panel .nav-search{max-width:100%;margin-bottom:14px}
.mobile-cats{display:flex;flex-direction:column;gap:2px;margin-bottom:14px}
.mobile-cats a{
  padding:11px 4px;font-size:15px;color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.mobile-cats a.active{color:var(--primary)}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:var(--text-3)}
.crumb .now{color:var(--text-2)}

/* ---------- 页面首屏 ---------- */
.page-hero{
  position:relative;padding:64px 0 0;
  background:
    radial-gradient(900px 420px at 82% -12%, rgba(18,194,180,.14), transparent 70%),
    radial-gradient(700px 380px at 8% 6%, rgba(44,99,232,.14), transparent 72%),
    var(--bg);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.036) 1px, transparent 1px),
                   linear-gradient(90deg, rgba(255,255,255,.036) 1px, transparent 1px);
  background-size:6px 6px;
  mask-image:linear-gradient(180deg, rgba(0,0,0,.75), transparent 78%);
  -webkit-mask-image:linear-gradient(180deg, rgba(0,0,0,.75), transparent 78%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--primary);
  background:var(--primary-soft);border:1px solid rgba(18,194,180,.28);
  padding:4px 12px;border-radius:var(--r-pill);margin-bottom:18px;
}
.page-hero h1{
  font-size:clamp(28px,4vw,44px);font-weight:700;max-width:860px;margin-bottom:18px;
}
.hero-lead{font-size:17px;color:var(--text-2);max-width:760px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{
  font-size:13px;color:var(--text-2);padding:6px 14px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--line);
}
.hero-figure{
  position:relative;margin-top:44px;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-alt);
  box-shadow:var(--shadow-card);
}
.hero-figure img{width:100%;height:clamp(200px,32vw,380px);object-fit:cover;opacity:.85}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(6,16,28,.25) 0%, rgba(6,16,28,.85) 100%);
}
.hero-figure .figure-cap{
  position:absolute;left:24px;bottom:20px;z-index:2;font-size:13px;color:var(--text-2);
}

/* ---------- 板块 ---------- */
.section{padding:var(--sec-y) 0}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px}
.section-sub{color:var(--text-2);font-size:16px}

/* ---------- 流程条 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.flow-step{
  position:relative;padding:28px 24px 26px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  transition:transform .2s ease-out, box-shadow .2s ease-out, border-color .2s ease-out;
}
.flow-step:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(18,194,180,.35)}
.flow-step::after{
  content:"";position:absolute;top:54px;right:-24px;width:24px;height:2px;
  background:linear-gradient(90deg, rgba(18,194,180,.55), rgba(44,99,232,.22));
}
.flow-step:last-child::after{display:none}
.step-num{
  display:flex;align-items:center;justify-content:center;
  width:52px;height:52px;border-radius:50%;margin-bottom:18px;
  background:var(--bg-alt2);border:1px solid rgba(18,194,180,.45);
  color:var(--primary);font-weight:700;font-size:17px;
  box-shadow:0 0 12px rgba(18,194,180,.16);
}
.flow-step h3{font-size:18px;margin-bottom:10px}
.flow-step p{color:var(--text-2);font-size:14.5px;line-height:1.75}
.flow-step .step-note{
  display:block;margin-top:14px;font-size:13px;color:var(--text-3);
  padding-top:12px;border-top:1px solid var(--line);
}

/* ---------- 通用卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.info-card{
  padding:28px 24px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  transition:transform .2s ease-out, box-shadow .2s ease-out, border-color .2s ease-out;
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(18,194,180,.35)}
.info-card .icon-wrap{
  width:44px;height:44px;border-radius:var(--r-sm);display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);border:1px solid rgba(18,194,180,.28);color:var(--primary);margin-bottom:18px;
}
.info-card h3{font-size:18px;margin-bottom:10px}
.info-card p{color:var(--text-2);font-size:14.5px}
.info-card .mini-list{margin-top:16px;display:flex;flex-direction:column;gap:8px}
.info-card .mini-list li{
  position:relative;padding-left:16px;font-size:14px;color:var(--text-2);
}
.info-card .mini-list li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;
  background:var(--primary);opacity:.75;
}

/* ---------- 交付与核对 ---------- */
.deliver-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
.check-list{display:flex;flex-direction:column;gap:16px;margin-top:26px}
.check-list li{
  display:flex;gap:14px;align-items:flex-start;
  padding:18px 20px;border-radius:var(--r-sm);
  background:var(--glass);border:1px solid var(--line);
  border-left:2px solid rgba(18,194,180,.6);
}
.check-list .tick{
  flex:0 0 auto;width:22px;height:22px;margin-top:2px;color:var(--primary);
}
.check-list strong{display:block;font-size:15.5px;font-weight:600;margin-bottom:4px}
.check-list span{font-size:14px;color:var(--text-2)}
.figure-box{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  background:var(--bg-alt2);box-shadow:var(--shadow-card);
}
.figure-box img{width:100%;height:clamp(220px,30vw,340px);object-fit:cover}
.figure-box .cap{padding:14px 20px;font-size:13px;color:var(--text-3);border-top:1px solid var(--line)}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{
  border-radius:var(--r-sm);background:var(--glass);border:1px solid var(--line);
  overflow:hidden;transition:border-color .2s ease-out;
}
.faq-item:hover{border-color:rgba(18,194,180,.35)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;min-height:56px;padding:16px 20px;font-size:16px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);border:1px solid rgba(18,194,180,.3);
  color:var(--primary);font-size:16px;line-height:1;font-weight:600;
  transition:transform .2s ease-out;
}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-body{
  padding:0 20px 20px;color:var(--text-2);font-size:14.5px;
  border-top:1px solid var(--line);margin-top:0;padding-top:16px;
}

/* ---------- CTA 与表单 ---------- */
.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  padding:36px 40px;border-radius:var(--r-card);
  background:
    radial-gradient(600px 220px at 88% 0%, rgba(18,194,180,.16), transparent 70%),
    var(--bg-alt2);
  border:1px solid var(--line);
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:10px}
.cta-band p{color:var(--text-2);font-size:15px;max-width:640px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.lead-form-wrap{
  margin-top:28px;padding:32px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
}
.lead-form{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:14px;color:var(--text-2)}
.field input,.field textarea{
  width:100%;padding:12px 16px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.03);border:1px solid var(--line);
  color:var(--text);font-size:15px;outline:none;
  transition:border-color .2s ease-out, box-shadow .2s ease-out, background .2s ease-out;
}
.field textarea{min-height:120px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field textarea:focus{
  border-color:rgba(18,194,180,.6);background:rgba(18,194,180,.05);
  box-shadow:0 0 0 3px rgba(18,194,180,.12);
}
.form-actions{grid-column:1 / -1;display:flex;justify-content:flex-end}
.privacy-note{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:26px;
}
.privacy-item{
  display:flex;gap:12px;align-items:flex-start;font-size:13.5px;color:var(--text-3);
}
.privacy-item svg{flex:0 0 auto;width:20px;height:20px;color:var(--primary);margin-top:3px}
.privacy-item b{color:var(--text-2);font-weight:600}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#040C16;border-top:1px solid var(--line);padding:64px 0 28px;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:30px;height:30px}
.footer-brand .brand-text{font-size:17px;font-weight:700}
.footer-about{font-size:13.5px;color:var(--text-3);line-height:1.8}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--text-2)}
.footer-links a:hover{color:var(--primary)}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact li{font-size:13.5px;color:var(--text-3);line-height:1.7}
.footer-contact span{
  display:block;color:var(--text-2);font-size:13px;font-weight:600;margin-bottom:2px;
}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
}
.footer-bottom .copy{display:flex;flex-wrap:wrap;gap:18px;font-size:13px;color:var(--text-3)}
.back-top{font-size:13px;color:var(--text-2)}
.back-top:hover{color:var(--primary)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sec-y:80px}
  .nav-cats{gap:14px}
  .nav-cats a{font-size:13px}
  .brand-text{font-size:17px}
  .flow{grid-template-columns:repeat(2,1fr);gap:20px}
  .flow-step:nth-child(2)::after{display:none}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
}
@media (max-width:991px){
  :root{--sec-y:72px}
  .nav-cats,.header-inner .nav-search,.nav-cta{display:none}
  .nav-toggle{display:flex}
  .header-inner{height:64px;gap:14px}
  .site-header.scrolled .header-inner{height:58px}
  .brand-text{font-size:17px}
  .deliver-grid{grid-template-columns:1fr;gap:32px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .privacy-note{grid-template-columns:1fr;gap:14px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .cta-band{padding:28px 24px}
}
@media (max-width:767px){
  :root{--sec-y:56px}
  .container{padding:0 16px}
  .page-hero{padding-top:44px}
  .hero-lead{font-size:15.5px}
  .flow{grid-template-columns:1fr;gap:16px}
  .flow-step::after{
    top:auto;bottom:-16px;left:44px;right:auto;width:2px;height:16px;
    background:linear-gradient(180deg, rgba(18,194,180,.55), rgba(44,99,232,.2));
  }
  .flow-step:nth-child(2)::after{display:block}
  .flow-step:last-child::after{display:none}
  .card-grid{grid-template-columns:1fr}
  .lead-form{grid-template-columns:1fr}
  .form-actions{justify-content:stretch}
  .form-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
  .section-head{margin-bottom:32px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
  --primary:#12C2B4;
  --primary-2:#2C63E8;
  --accent:#F0A93B;
  --bg:#06101C;
  --bg-2:#081524;
  --bg-3:#0A1A2B;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.08);
  --line-soft:rgba(255,255,255,.05);
  --text:#EAF2FA;
  --text-2:#A7B6C8;
  --muted:#6E8091;
  --r-card:16px;
  --r-sm:12px;
  --r-btn:10px;
  --r-badge:6px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04);
  --shadow-hover:0 0 0 1px rgba(18,194,180,.35),0 8px 28px rgba(18,194,180,.18);
  --section:96px;
  --container:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",Inter,Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--text);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--primary)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;color:var(--text)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.num,.stat-num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--section) 0}
.section-sm{padding:64px 0}
.section-head{margin-bottom:40px;max-width:760px}
.section-head h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px}
.section-head p{color:var(--text-2);font-size:15.5px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--primary);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:2px;height:14px;background:var(--primary);border-radius:2px}
.muted{color:var(--muted)}
.text-2{color:var(--text-2)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:all .2s var(--ease);white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#12C2B4 0%,#2C63E8 100%);
  color:#04121A;
  box-shadow:0 0 0 1px rgba(18,194,180,.35),0 6px 18px rgba(18,194,180,.22);
}
.btn-primary:hover{
  color:#04121A;filter:brightness(1.08);
  box-shadow:0 0 0 1px rgba(18,194,180,.5),0 8px 22px rgba(18,194,180,.3);
}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:var(--glass);border-color:var(--line);color:var(--text);
}
.btn-ghost:hover{background:var(--glass-strong);border-color:rgba(18,194,180,.45);color:var(--text)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn:focus-visible,a:focus-visible,input:focus-visible,button:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;
}
.btn[disabled]{opacity:.45;box-shadow:none;pointer-events:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14.5px;font-weight:600}
.link-arrow span{transition:transform .18s var(--ease)}
.link-arrow:hover span{transform:translateX(2px)}
.link-arrow:hover{text-decoration:underline;text-underline-offset:3px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(6,16,28,.82);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-soft);
  transition:height .2s var(--ease),background .2s var(--ease);
}
.header-inner{
  display:flex;align-items:center;gap:18px;height:72px;
  transition:height .2s var(--ease);
}
.site-header.is-scrolled{background:rgba(5,13,23,.95)}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:32px;height:32px;flex-shrink:0}
.brand-text{font-size:19px;font-weight:700;letter-spacing:.01em;color:var(--text)}
.brand:hover .brand-text{color:var(--primary)}
.nav-cats{display:flex;align-items:center;gap:20px;flex-shrink:0}
.nav-cats a{
  position:relative;font-size:14.5px;color:var(--text-2);padding:6px 0;
}
.nav-cats a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);border-radius:2px;
}
.nav-cats a:hover{color:var(--text)}
.nav-cats a:hover::after{transform:scaleX(1)}
.nav-cats a.active{color:var(--primary);font-weight:600}
.nav-cats a.active::after{transform:scaleX(1)}
.nav-search{
  position:relative;flex:1 1 42%;max-width:520px;min-width:180px;
  display:flex;align-items:center;height:44px;
  background:var(--glass);border:1px solid var(--line);border-radius:999px;
  padding:0 6px 0 16px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search:focus-within{
  border-color:rgba(18,194,180,.55);
  box-shadow:0 0 0 3px rgba(18,194,180,.12);
}
.nav-search svg{width:17px;height:17px;flex-shrink:0;stroke:var(--muted)}
.nav-search input{
  flex:1;height:100%;background:transparent;border:0;outline:none;
  color:var(--text);font-size:14.5px;padding:0 10px;
}
.nav-search input::placeholder{color:var(--muted)}
.search-btn{
  height:34px;padding:0 16px;border-radius:999px;border:0;cursor:pointer;
  background:linear-gradient(135deg,#12C2B4,#2C63E8);color:#04121A;
  font-size:13.5px;font-weight:700;
}
.search-btn:hover{filter:brightness(1.08)}
.nav-cta{margin-left:auto;flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);cursor:pointer;
  align-items:center;justify-content:center;padding:0;margin-left:auto;
}
.nav-toggle .bars,.nav-toggle .bars::before,.nav-toggle .bars::after{
  display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;
}
.nav-toggle .bars::before,.nav-toggle .bars::after{content:"";position:absolute;left:0}
.nav-toggle .bars::before{top:-6px}
.nav-toggle .bars::after{top:6px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.mobile-panel{
  display:none;border-top:1px solid var(--line-soft);
  background:rgba(6,16,28,.98);padding:16px 24px 22px;
}
.mobile-panel.is-open{display:block}
.mobile-search{
  display:flex;align-items:center;height:46px;background:var(--glass);
  border:1px solid var(--line);border-radius:999px;padding:0 16px;margin-bottom:14px;
}
.mobile-search input{flex:1;background:transparent;border:0;outline:none;color:var(--text);font-size:15px}
.mobile-search input::placeholder{color:var(--muted)}
.mobile-links{display:flex;flex-direction:column;gap:2px;margin-bottom:16px}
.mobile-links a{
  padding:12px 4px;font-size:15px;color:var(--text-2);
  border-bottom:1px solid var(--line-soft);
}
.mobile-links a.active{color:var(--primary);font-weight:600}

/* ---------- hero ---------- */
.hero-compare{
  position:relative;padding:72px 0 64px;
  background:
    radial-gradient(900px 420px at 82% -8%,rgba(44,99,232,.18),transparent 62%),
    linear-gradient(180deg,#06101C 0%,#081524 100%);
  border-bottom:1px solid var(--line-soft);
  overflow:hidden;
}
.hero-compare::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:6px 6px;pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-copy h1{font-size:clamp(28px,4vw,44px);margin-bottom:18px}
.hero-copy .lede{color:var(--text-2);font-size:16.5px;max-width:600px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px}
.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  height:34px;padding:0 14px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);
  color:var(--text-2);font-size:13.5px;
  transition:all .2s var(--ease);
}
.chip:hover{border-color:rgba(18,194,180,.45);color:var(--text);background:var(--glass-strong)}
.chip.is-active{background:rgba(18,194,180,.14);border-color:rgba(18,194,180,.5);color:var(--primary);font-weight:600}
.hero-media{position:relative}
.hero-media img{
  width:100%;height:320px;object-fit:cover;border-radius:var(--r-card);
  border:1px solid var(--line);
}
.hero-media .media-frame{
  position:absolute;inset:0;border-radius:var(--r-card);
  border:1px solid rgba(255,255,255,.12);
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
  opacity:.5;
}
.hero-media .media-tag{
  position:absolute;left:16px;bottom:16px;
  background:rgba(6,16,28,.78);border:1px solid var(--line);
  border-radius:var(--r-badge);padding:6px 12px;font-size:13px;color:var(--text-2);
  backdrop-filter:blur(6px);
}

/* ---------- compare table ---------- */
.compare-wrap{
  position:relative;border:1px solid var(--line);border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,.012));
  overflow:hidden;
}
.compare-scroll{overflow:visible}
.compare-table{width:100%;border-collapse:collapse;font-size:15px}
.compare-table thead th{
  position:sticky;top:72px;z-index:3;
  background:rgba(8,21,36,.97);backdrop-filter:blur(10px);
  padding:16px 20px;text-align:left;font-size:14px;font-weight:700;
  color:var(--text);border-bottom:1px solid var(--line);white-space:nowrap;
}
.compare-table thead th:nth-child(2),
.compare-table thead th:nth-child(3){color:var(--primary)}
.compare-table thead th:nth-child(3){color:var(--primary-2)}
.compare-table tbody tr td{
  padding:16px 20px;vertical-align:top;color:var(--text-2);
  border-bottom:1px solid var(--line-soft);font-size:14.5px;
}
.compare-table tbody tr td:first-child{color:var(--text);font-weight:600;width:26%}
.compare-table tbody tr:nth-child(odd){background:rgba(255,255,255,.016)}
.compare-table tbody tr:hover{background:rgba(18,194,180,.06)}
.compare-table .group-row th{
  padding:12px 20px;text-align:left;
  background:rgba(18,194,180,.09);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line-soft);
  font-size:13px;color:var(--primary);letter-spacing:.04em;font-weight:600;
}
.compare-table tbody tr:first-child th{border-top:0}
.badge-soft{
  display:inline-block;padding:2px 8px;border-radius:var(--r-badge);
  font-size:12px;background:rgba(240,169,59,.14);color:var(--accent);
  border:1px solid rgba(240,169,59,.3);margin-left:6px;
}

/* ---------- advice ---------- */
.advice-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:start}
.advice-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px;box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.advice-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(18,194,180,.35)}
.advice-card h3{font-size:19px;margin-bottom:12px}
.advice-card p{color:var(--text-2);font-size:15px;margin-bottom:12px}
.advice-card ul li{
  position:relative;padding-left:16px;color:var(--text-2);font-size:14.5px;margin-bottom:8px;
}
.advice-card ul li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;
  background:var(--primary);opacity:.85;
}
.side-note{
  border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;background:var(--bg-2);
}
.side-note img{width:100%;height:190px;object-fit:cover}
.side-note-body{padding:24px}
.side-note-body h3{font-size:18px;margin-bottom:10px}
.side-note-body p{color:var(--text-2);font-size:14.5px;margin-bottom:16px}

/* ---------- steps / mini cards ---------- */
.mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.mini-card{
  position:relative;background:var(--glass);border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px 24px 24px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.mini-card::before{
  content:"";position:absolute;left:24px;top:0;width:2px;height:22px;background:var(--primary);border-radius:2px;
}
.mini-card h3{font-size:17px;margin:12px 0 10px}
.mini-card p{color:var(--text-2);font-size:14.5px;margin-bottom:14px}
.mini-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(18,194,180,.35)}

/* ---------- form ---------- */
.form-band{
  background:linear-gradient(180deg,#081524,#0A1A2B);
  border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.form-panel{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px;
}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:8px}
.field input,.field textarea,.field select{
  width:100%;background:rgba(255,255,255,.04);border:1px solid var(--line);
  border-radius:var(--r-sm);color:var(--text);font-size:15px;
  padding:12px 14px;outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus,.field select:focus{
  border-color:rgba(18,194,180,.6);box-shadow:0 0 0 3px rgba(18,194,180,.12);
}
.field input::placeholder,.field textarea::placeholder{color:var(--muted)}
.form-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:6px}
.privacy-list{margin-top:26px;display:grid;gap:12px}
.privacy-list li{display:flex;gap:12px;color:var(--text-2);font-size:14px;line-height:1.7}
.privacy-list svg{width:18px;height:18px;flex-shrink:0;margin-top:3px;stroke:var(--primary)}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--text-2)}
.check-row input{width:16px;height:16px;margin-top:3px;accent-color:#12C2B4}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-sm);
  background:var(--glass);overflow:hidden;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.faq-item:hover{border-color:rgba(18,194,180,.35);background:var(--glass-strong)}
.faq-q{
  width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:transparent;border:0;cursor:pointer;text-align:left;
  color:var(--text);font-size:15.5px;font-weight:600;padding:14px 20px;
}
.faq-icon{
  position:relative;width:18px;height:18px;flex-shrink:0;
  transition:transform .2s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;transition:opacity .2s var(--ease)}
.faq-q[aria-expanded="true"] .faq-icon{transform:rotate(180deg)}
.faq-q[aria-expanded="true"] .faq-icon::after{opacity:0}
.faq-a-inner{
  padding:0 20px 18px;color:var(--text-2);font-size:14.5px;
  border-top:1px solid var(--line-soft);padding-top:16px;margin:0 20px 0;padding-left:0;padding-right:0;
}

/* ---------- cta band ---------- */
.cta-band{
  border:1px solid var(--line);border-radius:var(--r-card);
  background:
    radial-gradient(520px 220px at 12% 0%,rgba(18,194,180,.16),transparent 60%),
    linear-gradient(135deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  padding:38px;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:10px}
.cta-band p{color:var(--text-2);font-size:15px;max-width:620px}
.cta-band .actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{
  background:#040C15;border-top:1px solid var(--line-soft);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;
}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-text{font-size:18px;font-weight:700}
.footer-about{color:var(--text-2);font-size:14px;line-height:1.8;max-width:360px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:var(--text-2);font-size:14px}
.footer-links a:hover{color:var(--primary)}
.footer-contact li{color:var(--text-2);font-size:14px;margin-bottom:10px;line-height:1.7}
.footer-contact li span{display:inline-block;color:var(--text);margin-right:8px;font-weight:600}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
}
.copy{display:flex;flex-wrap:wrap;gap:8px 20px;color:var(--muted);font-size:13px}
.back-top{color:var(--text-2);font-size:13.5px;border:1px solid var(--line);border-radius:999px;padding:8px 16px}
.back-top:hover{color:var(--primary);border-color:rgba(18,194,180,.45)}

/* ---------- modal ---------- */
.modal-content{
  background:#081524;border:1px solid var(--line);border-radius:var(--r-card);
  color:var(--text);
}
.modal-header{border-bottom:1px solid var(--line-soft);padding:20px 24px}
.modal-title{font-size:18px;font-weight:700}
.modal-body{padding:24px;max-height:70vh;overflow-y:auto}
.modal-footer{border-top:1px solid var(--line-soft);padding:16px 24px}
.btn-close{filter:invert(1) grayscale(1);opacity:.6}
.modal-backdrop.show{opacity:.72;background:#06101C}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  :root{--section:72px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media img{height:260px}
  .compare-table thead th{top:60px}
}
@media (max-width:991.98px){
  .nav-cats{display:none}
  .nav-search{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .advice-grid{grid-template-columns:1fr}
  .mini-grid{grid-template-columns:repeat(2,1fr)}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767.98px){
  :root{--section:56px}
  .container{padding:0 16px}
  .hero-compare{padding:48px 0 44px}
  .hero-media img{height:210px}
  .mini-grid{grid-template-columns:1fr}
  .compare-table thead{display:none}
  .compare-table,.compare-table tbody,.compare-table tr,.compare-table td{display:block;width:100%}
  .compare-table tbody tr{
    border:1px solid var(--line);border-radius:var(--r-sm);
    padding:6px 0;margin-bottom:12px;background:rgba(255,255,255,.028);
  }
  .compare-table tbody tr td{
    border-bottom:0;padding:8px 16px;font-size:14px;
  }
  .compare-table tbody tr td:first-child{
    width:100%;color:var(--text);font-weight:700;font-size:14.5px;
    padding-top:12px;
  }
  .compare-table tbody tr td::before{
    content:attr(data-label);display:block;
    font-size:12px;color:var(--muted);margin-bottom:2px;
  }
  .compare-table tbody tr td:first-child::before{display:none}
  .compare-table .group-row{display:block;margin:20px 0 10px}
  .compare-table .group-row th{display:block;border-radius:var(--r-badge);border:0}
  .compare-wrap{border:0;background:transparent;overflow:visible}
  .cta-band{padding:26px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:575.98px){
  .brand-text{font-size:17px}
  .btn{width:100%}
  .hero-actions .btn{width:100%}
  .cta-band .actions{width:100%}
  .form-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
:root{
  --primary:#12C2B4;
  --primary-2:#2C63E8;
  --accent:#F0A93B;
  --bg:#06101C;
  --bg-2:#081524;
  --bg-3:#0A1A2B;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --text:#EAF2FA;
  --text-2:#A7B6C8;
  --text-3:#6E8091;
  --danger:#F0763B;
  --r-card:16px;
  --r-sm:12px;
  --r-btn:10px;
  --r-badge:6px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:200ms;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
a{color:inherit;text-decoration:none;transition:color var(--t) var(--ease)}
img{max-width:100%;display:block}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--text)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(18,194,180,.3);color:#fff}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:15px;font-weight:600;
  cursor:pointer;white-space:nowrap;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease),filter var(--t) var(--ease),border-color var(--t) var(--ease);
}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.btn-primary{
  background:linear-gradient(135deg,#12C2B4 0%,#2C63E8 100%);
  color:#04121A;
  box-shadow:0 0 0 1px rgba(18,194,180,.35),0 6px 18px rgba(18,194,180,.2);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 0 1px rgba(18,194,180,.5),0 8px 24px rgba(18,194,180,.3)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:var(--glass);border-color:var(--line-2);color:var(--text);
}
.btn-ghost:hover{background:var(--glass-2);border-color:rgba(18,194,180,.45);color:#fff}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.text-link{color:var(--primary);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.text-link span{transition:transform var(--t) var(--ease)}
.text-link:hover{color:#5BE3D6;text-decoration:underline;text-underline-offset:4px}
.text-link:hover span{transform:translateX(2px)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(6,16,28,.86);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.site-header.is-scrolled{background:rgba(6,16,28,.97);box-shadow:0 10px 28px rgba(0,0,0,.38)}
.header-inner{display:flex;align-items:center;gap:18px;height:72px;transition:height var(--t) var(--ease)}
.site-header.is-scrolled .header-inner{height:62px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:34px;height:34px;flex:0 0 auto}
.brand-text{font-size:19px;font-weight:700;white-space:nowrap}
.nav-cats{display:flex;align-items:center;gap:20px;flex:0 0 auto}
.nav-cats a{position:relative;font-size:14px;color:var(--text-2);padding:5px 0;white-space:nowrap}
.nav-cats a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t) var(--ease);
}
.nav-cats a:hover{color:var(--text)}
.nav-cats a:hover::after{transform:scaleX(1)}
.nav-cats a.active{color:var(--primary)}
.nav-cats a.active::after{transform:scaleX(1)}
.nav-search{position:relative;flex:1 1 auto;max-width:460px;min-width:170px}
.nav-search .search-ico{
  position:absolute;left:16px;top:50%;transform:translateY(-50%);
  width:18px;height:18px;color:var(--text-3);pointer-events:none;
}
.nav-search input{
  width:100%;height:44px;border-radius:999px;
  border:1px solid var(--line-2);background:var(--glass);color:var(--text);
  padding:0 18px 0 44px;font-size:14px;outline:none;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease);
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search input:focus{border-color:rgba(18,194,180,.6);background:rgba(255,255,255,.075);box-shadow:0 0 0 3px rgba(18,194,180,.14)}
.header-cta{flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;flex:0 0 auto;
  align-items:center;justify-content:center;cursor:pointer;
  border-radius:12px;border:1px solid var(--line-2);background:var(--glass);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;transition:background var(--t)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
  transition:transform var(--t) var(--ease),top var(--t) var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{top:0;transform:rotate(45deg)}
.nav-toggle.is-open span::after{top:0;transform:rotate(-45deg)}
.mobile-panel{display:none;border-top:1px solid var(--line);background:rgba(8,21,36,.99);padding:18px 0 22px}
.mobile-panel.is-open{display:block}
.mobile-panel .nav-search{display:block;max-width:none;min-width:0;margin-bottom:16px}
.mobile-cats{display:flex;flex-direction:column;gap:2px;margin-bottom:16px}
.mobile-cats a{padding:11px 2px;font-size:15px;color:var(--text-2);border-bottom:1px solid var(--line)}
.mobile-cats a.active{color:var(--primary)}
.mobile-cats a:last-child{border-bottom:0}

/* ============ 通用板块 ============ */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:clamp(22px,2.6vw,30px)}
.section-head p{margin-top:14px;color:var(--text-2);font-size:15.5px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--primary);
  letter-spacing:0;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--primary)}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 9px;
  border-radius:var(--r-badge);font-size:12px;font-weight:600;
  background:rgba(18,194,180,.14);color:#5BE3D6;border:1px solid rgba(18,194,180,.28);
}
.badge-blue{background:rgba(44,99,232,.16);color:#86A9FF;border-color:rgba(44,99,232,.3)}
.badge-amber{background:rgba(240,169,59,.14);color:#F5C171;border-color:rgba(240,169,59,.3)}

/* ============ 分类首页首屏 ============ */
.cat-hero{
  position:relative;padding:64px 0 56px;overflow:hidden;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(760px 340px at 88% 12%,rgba(44,99,232,.16),transparent 62%),
    radial-gradient(600px 320px at 6% 88%,rgba(18,194,180,.13),transparent 66%),
    var(--bg-2);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:6px 6px;
  opacity:.5;pointer-events:none;
}
.cat-hero-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:var(--text-3);opacity:.6}
.cat-hero h1{font-size:clamp(28px,4vw,44px);letter-spacing:-.5px}
.hero-lead{margin-top:18px;font-size:16.5px;color:var(--text-2);max-width:560px}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-facts .pill{
  display:inline-flex;align-items:center;gap:7px;height:32px;padding:0 13px;
  border-radius:999px;border:1px solid var(--line-2);background:var(--glass);
  font-size:13px;color:var(--text-2);
}
.hero-facts .pill i{width:6px;height:6px;border-radius:50%;background:var(--primary);display:block}
.hero-visual{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line-2);background:var(--glass);
  box-shadow:0 20px 50px rgba(0,0,0,.35);
}
.hero-visual img{width:100%;height:340px;object-fit:cover;opacity:.82}
.hero-visual .overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,16,28,.1) 0%,rgba(6,16,28,.72) 100%);
}
.hero-visual figcaption{
  position:absolute;left:20px;right:20px;bottom:18px;font-size:13.5px;color:var(--text-2);
}
.hero-visual .tag-top{
  position:absolute;top:18px;left:20px;
}

/* ============ 问答卡片瀑布 ============ */
.waterfall{column-count:2;column-gap:24px}
.wf-card{
  display:inline-block;width:100%;break-inside:avoid;
  margin:0 0 24px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.wf-card:hover{transform:translateY(-4px);box-shadow:0 0 0 1px rgba(18,194,180,.35),0 8px 28px rgba(18,194,180,.18);border-color:rgba(18,194,180,.35)}
.wf-card .wf-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.wf-card h3{font-size:18px;margin-bottom:12px}
.wf-card p{color:var(--text-2);font-size:15px}
.wf-card .wf-foot{margin-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.wf-cover{
  border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--line);
  margin-bottom:18px;
}
.wf-cover img{width:100%;height:170px;object-fit:cover;opacity:.8}
.wf-points{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.wf-points li{
  position:relative;padding-left:16px;font-size:14.5px;color:var(--text-2);
}
.wf-points li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:2px;
  background:var(--primary);opacity:.9;
}
.wf-num{
  font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;
  letter-spacing:.5px;
}

/* ============ 高频排行 ============ */
.rank-wrap{
  background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.rank-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:44px;align-items:start}
.rank-list{border-top:1px solid var(--line)}
.rank-item{
  display:grid;grid-template-columns:56px 1fr;gap:14px;
  padding:20px 0;border-bottom:1px solid var(--line);
  transition:background var(--t) var(--ease);
}
.rank-item:hover{background:rgba(255,255,255,.025)}
.rank-idx{
  font-size:22px;font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.rank-item h4{font-size:16.5px;margin-bottom:6px}
.rank-item p{font-size:14.5px;color:var(--text-2)}
.rank-side{
  background:var(--glass);border:1px solid var(--line-2);border-radius:var(--r-card);
  padding:26px;
}
.rank-side h3{font-size:18px;margin-bottom:12px}
.rank-side p{color:var(--text-2);font-size:14.5px;margin-bottom:18px}
.rank-side ul{display:flex;flex-direction:column;gap:10px;margin-bottom:22px}
.rank-side li{position:relative;padding-left:18px;font-size:14.5px;color:var(--text-2)}
.rank-side li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  border:1.5px solid var(--primary);
}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;padding:14px 4px;background:none;border:0;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);cursor:pointer;
  transition:color var(--t) var(--ease);
}
.faq-q:hover{color:var(--primary)}
.faq-q:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.faq-q .ico{
  flex:0 0 auto;width:26px;height:26px;display:flex;align-items:center;justify-content:center;
  border-radius:50%;border:1px solid var(--line-2);color:var(--primary);
  font-size:16px;line-height:1;transition:transform var(--t) var(--ease),background var(--t) var(--ease);
}
.faq-q:not(.collapsed) .ico{transform:rotate(45deg);background:rgba(18,194,180,.14);border-color:rgba(18,194,180,.45)}
.faq-a{padding:2px 46px 22px 4px;color:var(--text-2);font-size:15.5px;max-width:860px}

/* ============ CTA 与隐私条 ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-card);
  border:1px solid var(--line-2);
  background:
    radial-gradient(520px 240px at 86% 20%,rgba(44,99,232,.24),transparent 62%),
    radial-gradient(420px 220px at 8% 96%,rgba(18,194,180,.2),transparent 64%),
    var(--bg-3);
  padding:44px;
}
.cta-band-inner{display:grid;grid-template-columns:1.4fr .6fr;gap:32px;align-items:center}
.cta-band h2{font-size:clamp(22px,2.6vw,30px)}
.cta-band p{margin-top:14px;color:var(--text-2);font-size:15.5px;max-width:620px}
.cta-actions{display:flex;flex-direction:column;gap:12px;align-items:stretch}
.privacy-row{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;
  margin-top:26px;padding-top:24px;border-top:1px solid var(--line);
}
.privacy-item{display:flex;gap:12px;align-items:flex-start}
.privacy-item svg{flex:0 0 auto;width:20px;height:20px;color:var(--primary);margin-top:3px}
.privacy-item strong{display:block;font-size:14.5px;font-weight:600;margin-bottom:4px}
.privacy-item span{font-size:13.5px;color:var(--text-2)}

/* ============ 表单与弹层 ============ */
.form-field{margin-bottom:18px}
.form-field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--text)}
.form-field .hint{font-size:12.5px;color:var(--text-3);margin-top:6px}
.form-field input,.form-field textarea{
  width:100%;border-radius:var(--r-sm);border:1px solid var(--line-2);
  background:var(--glass);color:var(--text);padding:12px 14px;font-size:15px;
  outline:none;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease);
}
.form-field textarea{min-height:110px;resize:vertical}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--text-3)}
.form-field input:focus,.form-field textarea:focus{
  border-color:rgba(18,194,180,.65);background:rgba(255,255,255,.075);
  box-shadow:inset 0 0 0 1px rgba(18,194,180,.2),0 0 0 3px rgba(18,194,180,.12);
}
.check-row{display:flex;gap:10px;align-items:flex-start;margin:18px 0 22px}
.check-row input{width:18px;height:18px;margin-top:3px;flex:0 0 auto;accent-color:#12C2B4}
.check-row label{font-size:13.5px;color:var(--text-2)}
.modal-content{
  background:var(--bg-2);border:1px solid var(--line-2);
  border-radius:var(--r-card);color:var(--text);
}
.modal-header{border-bottom:1px solid var(--line);padding:20px 24px}
.modal-title{font-size:18px;font-weight:700}
.modal-body{padding:24px;max-height:66vh;overflow-y:auto}
.modal-footer{border-top:1px solid var(--line);padding:16px 24px;gap:10px}
.btn-close{filter:invert(1) grayscale(1) brightness(1.6);opacity:.7}
.btn-close:hover{opacity:1}
.modal-backdrop.show{opacity:.72;background:#06101C}

/* ============ 页脚 ============ */
.site-footer{background:#040C14;border-top:1px solid var(--line);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:32px;height:32px}
.footer-brand .brand-text{font-size:18px;font-weight:700}
.footer-about{font-size:14px;color:var(--text-2);max-width:340px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--text-2)}
.footer-links a:hover{color:var(--primary)}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact li{font-size:14px;color:var(--text-2)}
.footer-contact li span{
  display:inline-block;min-width:64px;color:var(--text-3);font-size:13px;margin-right:8px;
}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.footer-bottom .copy{display:flex;flex-wrap:wrap;gap:18px;font-size:13px;color:var(--text-3)}
.back-top{
  font-size:13px;color:var(--text-2);border:1px solid var(--line-2);
  border-radius:999px;padding:7px 16px;background:var(--glass);
  transition:color var(--t) var(--ease),border-color var(--t) var(--ease),background var(--t) var(--ease);
}
.back-top:hover{color:var(--primary);border-color:rgba(18,194,180,.45);background:rgba(18,194,180,.08)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav-cats{gap:14px}
  .nav-cats a{font-size:13.5px}
  .brand-text{font-size:17.5px}
  .section{padding:76px 0}
}
@media (max-width:991px){
  .nav-cats,.header-inner > .nav-search,.header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{height:64px;gap:12px}
  .site-header.is-scrolled .header-inner{height:58px}
  .brand{margin-right:auto}
  .cat-hero-inner{grid-template-columns:1fr;gap:34px}
  .hero-visual img{height:280px}
  .section{padding:64px 0}
  .section-head{margin-bottom:34px}
  .rank-grid{grid-template-columns:1fr;gap:32px}
  .cta-band{padding:32px}
  .cta-band-inner{grid-template-columns:1fr;gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .waterfall{column-count:1}
  .cat-hero{padding:40px 0 40px}
  .section{padding:56px 0}
  .privacy-row{grid-template-columns:1fr;gap:16px}
  .faq-a{padding-right:12px}
  .footer-grid{grid-template-columns:1fr;gap:26px;border-top:0}
  .footer-col{border-bottom:1px solid var(--line);padding-bottom:20px}
  .footer-col:last-child{border-bottom:0}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .modal-dialog{margin:0;position:fixed;bottom:0;left:0;right:0;max-width:100%}
  .modal-content{border-radius:18px 18px 0 0}
  .cta-band{padding:26px 20px}
}
@media (max-width:520px){
  .brand-text{font-size:16px}
  .hero-visual img{height:210px}
  .wf-card{padding:20px}
  .rank-item{grid-template-columns:44px 1fr}
  .btn{width:100%}
  .btn.header-cta{width:auto}
  .hero-facts .pill{font-size:12.5px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}