/* roulang page: index */
:root{
  --ink-900:#060B14;
  --ink-800:#0B1524;
  --ink-700:#122238;
  --brand:#16C7A8;
  --brand-light:#2BE8C9;
  --brand-dark:#0E8C7A;
  --promo:#FFB43C;
  --promo-dark:#E08A18;
  --violet:#6C5CE7;
  --t1:#EAF2FA;
  --t2:#9FB2C7;
  --t3:#64798F;
  --line:rgba(255,255,255,.08);
  --line-glow:rgba(43,232,201,.35);
  --glass-bg:rgba(18,34,56,.55);
  --glass-line:rgba(120,220,255,.14);
  --ok:#34D399;
  --err:#F87171;
  --warn:#FBBF24;
  --r-card:18px;
  --r-btn:12px;
  --r-input:12px;
  --r-img:14px;
  --sh-card:0 18px 48px rgba(0,0,0,.45);
  --sh-float:0 28px 70px rgba(0,0,0,.55);
  --sh-glow:0 0 0 1px rgba(43,232,201,.25),0 10px 30px rgba(43,232,201,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --shell:248px;
  --maxw:1240px;
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num:ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;padding:0;background:var(--ink-900);color:var(--t1);
  font-family:var(--font-cn);font-size:16px;line-height:1.9;font-weight:400;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body,button,input,select,textarea{font-family:var(--font-cn)}
img{max-width:100%;display:block;height:auto;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease)}
a:hover{color:var(--brand-light)}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.25;color:var(--t1)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{background:none;border:0;cursor:pointer;color:inherit}
input,select,textarea{font-size:16px}
::selection{background:rgba(43,232,201,.28);color:#fff}
:focus-visible{outline:2px solid var(--brand-light);outline-offset:2px;border-radius:6px}

.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.01em}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 40px}
.sec{padding:96px 0;position:relative}
.sec-alt{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:720px;margin-bottom:44px}
.sec-kicker{display:inline-block;font-size:13px;letter-spacing:.14em;color:var(--brand);margin-bottom:12px;text-transform:uppercase}
.sec-head h2{font-size:32px}
.sec-desc{margin-top:14px;color:var(--t2);font-size:16px;max-width:640px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;border:1px solid var(--glass-line);background:rgba(22,199,168,.10);color:var(--brand-light);font-size:13px}
.row-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}

/* ---------- App shell ---------- */
.app{position:relative;min-height:100vh}
.app-shell{
  position:fixed;top:0;left:0;bottom:0;width:var(--shell);z-index:70;
  display:flex;flex-direction:column;gap:8px;padding:22px 16px 18px;
  background:linear-gradient(180deg,rgba(18,34,56,.86),rgba(6,11,20,.92));
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-right:1px solid var(--glass-line);
}
.app-shell::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(43,232,201,.5),transparent)}
.brand{display:flex;align-items:center;gap:12px;padding:6px 8px 18px}
.brand-mark{width:38px;height:38px;flex:0 0 38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-dark) 60%,#0b3a34 100%);
  box-shadow:var(--sh-glow);color:#04140f;font-weight:800;font-size:15px}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:16px;font-weight:800;color:var(--t1)}
.brand-sub{font-size:11px;color:var(--t3);letter-spacing:.08em}
.shell-nav{display:flex;flex-direction:column;gap:6px;margin-top:6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;min-height:44px;
  padding:10px 14px;border-radius:12px;color:var(--t2);font-size:15px;font-weight:500;
  border:1px solid transparent;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.nav-item svg{flex:0 0 20px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.nav-item:hover{background:rgba(255,255,255,.04);color:var(--t1);border-color:var(--line)}
.nav-item.is-active{color:var(--t1);background:rgba(22,199,168,.10);border-color:rgba(43,232,201,.22)}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:2px;background:var(--brand-light);
  box-shadow:0 0 12px rgba(43,232,201,.85);
}
.shell-foot{margin-top:auto;padding:16px 4px 0;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px}
.shell-copy{font-size:12px;color:var(--t3);line-height:1.6}
.shell-main{min-width:0}
.shell-body{margin-left:var(--shell);min-width:0;width:calc(100% - var(--shell));display:flex;flex-direction:column;min-height:100vh}
.topbar{display:none;align-items:center;justify-content:space-between;gap:16px;padding:0 20px;height:64px;
  position:fixed;top:0;left:0;right:0;z-index:65;background:rgba(6,11,20,.92);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.topbar .brand{padding:0}
.topbar .brand-mark{width:32px;height:32px;flex:0 0 32px;font-size:13px;border-radius:9px}
.burger{width:44px;height:44px;display:grid;place-items:center;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.03)}
.burger svg{stroke:var(--t1);stroke-width:1.5;fill:none;stroke-linecap:round}
.shell-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:75;display:none}
.shell-mask.is-open{display:block}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.btn-primary{background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);color:#04140F;box-shadow:var(--sh-glow)}
.btn-primary:hover{color:#04140F;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(43,232,201,.4),0 14px 34px rgba(43,232,201,.3)}
.btn-ghost{background:rgba(255,255,255,.03);border-color:var(--line);color:var(--t1)}
.btn-ghost:hover{color:var(--t1);border-color:var(--line-glow);background:rgba(43,232,201,.08)}
.btn-promo{background:linear-gradient(135deg,var(--promo) 0%,var(--promo-dark) 100%);color:#231402;box-shadow:0 10px 30px rgba(255,180,60,.22)}
.btn-promo:hover{color:#231402;filter:brightness(1.06);transform:translateY(-2px)}
.btn-block{width:100%}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px}
.link-more{color:var(--brand);font-size:15px;font-weight:600;position:relative;display:inline-flex;align-items:center;gap:6px}
.link-more::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease)}
.link-more:hover::after{transform:scaleX(1)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:88px 0 96px;border-bottom:1px solid var(--line)}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center right;z-index:0}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    repeating-linear-gradient(0deg,rgba(255,255,255,.05) 0 1px,transparent 1px 44px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.05) 0 1px,transparent 1px 44px),
    linear-gradient(100deg,rgba(6,11,20,.95) 0%,rgba(6,11,20,.78) 48%,rgba(6,11,20,.90) 100%);
  opacity:1;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center}
.hero h1{font-size:44px;margin:20px 0 0;max-width:14em}
.hero-sub{margin-top:16px;font-size:18px;color:var(--t2);line-height:1.7;max-width:26em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.trust-row{display:flex;flex-wrap:wrap;gap:26px;margin-top:38px;padding-top:24px;border-top:1px solid var(--line)}
.trust-row li{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--t2)}
.trust-row svg{width:20px;height:20px;stroke:var(--brand);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.hero-card{
  position:relative;border-radius:22px;padding:28px 26px 26px;box-shadow:var(--sh-float);
  background:var(--glass-bg);backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--glass-line);
}
.hero-card::before{content:"";position:absolute;top:0;left:18px;right:18px;height:1px;background:linear-gradient(90deg,transparent,rgba(43,232,201,.65),transparent)}
.card-tag{display:inline-block;font-size:12px;letter-spacing:.1em;color:var(--promo);border:1px solid rgba(255,180,60,.35);background:rgba(255,180,60,.10);padding:4px 12px;border-radius:999px}
.hero-card h3{font-size:22px;margin-top:16px}
.hero-card-num{font-size:48px;font-weight:800;line-height:1;margin-top:12px;color:var(--brand-light);text-shadow:0 0 26px rgba(43,232,201,.35)}
.hero-card-num span{font-size:22px;color:var(--t3)}
.hero-card-list{margin:20px 0 24px;display:flex;flex-direction:column;gap:10px}
.hero-card-list li{position:relative;padding-left:20px;font-size:14px;color:var(--t2)}
.hero-card-list li::before{content:"";position:absolute;left:0;top:12px;width:8px;height:8px;border-radius:2px;background:var(--brand);box-shadow:0 0 10px rgba(43,232,201,.6)}
.hero-card-note{margin-top:14px;font-size:13px;color:var(--t3);line-height:1.7}

/* ---------- Tiers ---------- */
.tier-list{display:flex;align-items:flex-end;gap:20px}
.tier{
  position:relative;flex:1 1 0;border-radius:var(--r-card);padding:24px 22px;
  background:var(--ink-700);border:1px solid var(--line);box-shadow:var(--sh-card);
  transition:transform .24s var(--ease),border-color .24s var(--ease),opacity .24s var(--ease);
}
.tier:hover{transform:translateY(-4px);border-color:var(--line-glow)}
.tier:nth-child(1){min-height:230px}
.tier:nth-child(2){min-height:262px}
.tier:nth-child(3){min-height:294px}
.tier:nth-child(4){min-height:326px}
.tier.is-done{border-color:rgba(43,232,201,.42);box-shadow:0 0 0 1px rgba(43,232,201,.16),var(--sh-card)}
.tier.is-locked{opacity:.6}
.tier-idx{font-family:var(--font-num);font-size:13px;letter-spacing:.12em;color:var(--t3)}
.tier h3{font-size:20px;margin-top:10px}
.tier-gate{margin-top:10px;font-size:14px;color:var(--t2);min-height:44px}
.tier-rights{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:baseline;gap:8px}
.tier-rights b{font-family:var(--font-num);font-size:26px;color:var(--brand-light)}
.tier-rights span{font-size:13px;color:var(--t3)}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:4px 11px;border-radius:999px;border:1px solid var(--line);color:var(--t2)}
.badge-done{color:#062a21;background:var(--brand);border-color:transparent}
.badge-run{color:var(--promo);background:rgba(255,180,60,.12);border-color:rgba(255,180,60,.35)}
.badge-lock{color:var(--t3);background:rgba(255,255,255,.03)}
.tier .badge{position:absolute;top:20px;right:18px}
.tier-line{position:absolute;left:-12px;top:50%;width:12px;height:1px;background:linear-gradient(90deg,transparent,rgba(43,232,201,.6))}

/* ---------- Plans ---------- */
.plan-grid{margin-left:-12px;margin-right:-12px}
.plan-grid > .cell{padding-left:12px;padding-right:12px}
.plan-col{background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;display:flex;flex-direction:column;transition:transform .24s var(--ease),border-color .24s var(--ease)}
.plan-col:hover{transform:translateY(-4px);border-color:var(--line-glow)}
.plan-col.is-best{border-color:rgba(43,232,201,.45);box-shadow:var(--sh-glow),var(--sh-card);transform:translateY(-8px)}
.plan-head{padding:26px 22px 20px;border-bottom:1px solid var(--line);position:relative;background:rgba(255,255,255,.015)}
.plan-name{font-size:18px;font-weight:800}
.plan-price{margin-top:12px;font-family:var(--font-num);font-size:28px;font-weight:800;color:var(--t1)}
.plan-price small{font-size:13px;color:var(--t3);font-family:var(--font-cn);font-weight:400;margin-left:6px}
.plan-note{margin-top:8px;font-size:13px;color:var(--t3)}
.plan-badge{position:absolute;top:20px;right:20px;font-size:12px;padding:4px 10px;border-radius:999px;background:var(--promo);color:#231402;font-weight:700}
.plan-feats{padding:8px 22px 20px}
.plan-feats li{display:flex;align-items:center;gap:12px;min-height:52px;border-bottom:1px solid rgba(255,255,255,.05);font-size:14.5px;color:var(--t2)}
.plan-feats li:last-child{border-bottom:0}
.plan-feats li:nth-child(even){background:rgba(255,255,255,.012)}
.plan-feats li.diff{color:var(--t1);background:rgba(43,232,201,.06)}
.plan-feats li.diff .mark{background:rgba(43,232,201,.16);border-color:rgba(43,232,201,.4)}
.mark{flex:0 0 22px;width:22px;height:22px;border-radius:7px;display:grid;place-items:center;border:1px solid var(--line);background:rgba(255,255,255,.03)}
.mark svg{width:13px;height:13px;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}
.mark.yes svg{stroke:var(--brand-light)}
.mark.no svg{stroke:var(--t3)}
.plan-foot{padding:0 22px 24px;margin-top:auto}

/* ---------- Limited ---------- */
.limited{
  position:relative;display:grid;grid-template-columns:auto 1fr auto;gap:36px;align-items:center;
  padding:28px 32px;border-radius:22px;
  background:var(--glass-bg);backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--glass-line);box-shadow:var(--sh-float);
}
.limited::before{content:"";position:absolute;top:0;left:24px;right:24px;height:1px;background:linear-gradient(90deg,transparent,rgba(255,180,60,.7),transparent)}
.limited-count .kicker{display:block;font-size:13px;color:var(--promo);letter-spacing:.1em;margin-bottom:8px}
.countdown{display:flex;align-items:baseline;gap:6px;font-family:var(--font-num);font-variant-numeric:tabular-nums}
.cd-num{font-size:48px;font-weight:800;line-height:1;color:var(--t1);text-shadow:0 0 24px rgba(43,232,201,.25)}
.cd-colon{font-size:34px;font-weight:700;color:var(--brand);line-height:1}
.progress-head{display:flex;justify-content:space-between;font-size:13.5px;color:var(--t2);margin-bottom:10px}
.progress-head b{font-family:var(--font-num);color:var(--promo)}
.progress{height:6px;border-radius:99px;background:rgba(255,255,255,.08);overflow:hidden}
.progress i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--brand) 0%,var(--violet) 100%);box-shadow:0 0 14px rgba(43,232,201,.45)}
.limited-note{margin-top:12px;font-size:13px;color:var(--t3)}

/* ---------- Consult ---------- */
.consult-grid{margin-left:-16px;margin-right:-16px}
.consult-grid > .cell{padding-left:16px;padding-right:16px}
.point-list{margin-top:24px;display:flex;flex-direction:column;gap:14px}
.point-list li{display:flex;gap:12px;padding:16px 18px;border-radius:14px;background:var(--ink-700);border:1px solid var(--line);font-size:14.5px;color:var(--t2);transition:border-color .2s var(--ease),transform .2s var(--ease)}
.point-list li:hover{border-color:var(--line-glow);transform:translateX(3px)}
.point-list svg{flex:0 0 20px;stroke:var(--brand);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;margin-top:5px}
.consult-form{background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:28px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13.5px;color:var(--t2);margin-bottom:8px;font-weight:600}
.field label i{color:var(--err);font-style:normal;margin-left:4px}
.input,.select,.textarea{
  width:100%;padding:12px 14px;border-radius:var(--r-input);border:1px solid var(--line);
  background:var(--ink-800);color:var(--t1);line-height:1.6;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.input::placeholder,.textarea::placeholder{color:var(--t3)}
.input:focus,.select:focus,.textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,232,201,.18);background:#0d1a2c}
.textarea{min-height:120px;resize:vertical}
.select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--t3) 50%),linear-gradient(135deg,var(--t3) 50%,transparent 50%);background-position:calc(100% - 20px) 22px,calc(100% - 14px) 22px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field.is-error .input,.field.is-error .select,.field.is-error .textarea{border-color:var(--err);box-shadow:0 0 0 3px rgba(248,113,113,.14)}
.err-msg{display:none;margin-top:7px;font-size:13px;color:var(--err)}
.field.is-error .err-msg{display:block}
.checkline{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--t2);line-height:1.7}
.checkline input{width:18px;height:18px;margin-top:5px;accent-color:var(--brand);flex:0 0 18px}
.checkline.is-error{color:var(--err)}
.form-ok{display:none;text-align:center;padding:44px 28px;border-radius:var(--r-card);background:var(--ink-700);border:1px solid rgba(43,232,201,.35);box-shadow:var(--sh-glow)}
.form-ok.is-on{display:block}
.form-ok .ok-icon{width:56px;height:56px;margin:0 auto 18px;border-radius:50%;display:grid;place-items:center;background:rgba(52,211,153,.14);border:1px solid rgba(52,211,153,.45)}
.form-ok .ok-icon svg{width:26px;height:26px;stroke:var(--ok);stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round}
.form-ok h3{font-size:22px}
.form-ok p{margin-top:12px;color:var(--t2);font-size:14.5px}

/* ---------- Scenes ---------- */
.scene-grid{margin-left:-12px;margin-right:-12px}
.scene-grid > .cell{padding-left:12px;padding-right:12px;margin-bottom:24px}
.scene-card{height:100%;background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:transform .24s var(--ease),border-color .24s var(--ease)}
.scene-card:hover{transform:translateY(-4px);border-color:var(--line-glow)}
.scene-card img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0;filter:saturate(.92)}
.scene-body{padding:22px}
.scene-body h3{font-size:19px}
.scene-body p{margin-top:10px;font-size:14.5px;color:var(--t2)}
.scene-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag{font-size:12px;padding:4px 11px;border-radius:999px;border:1px solid var(--line);color:var(--t2);background:rgba(255,255,255,.03)}

/* ---------- Info / CMS ---------- */
.info-grid{margin-left:-12px;margin-right:-12px}
.info-grid > .cell{padding-left:12px;padding-right:12px;margin-bottom:24px}
.info-card{height:100%;display:flex;flex-direction:column;background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:transform .24s var(--ease),border-color .24s var(--ease)}
.info-card:hover{transform:translateY(-4px);border-color:var(--line-glow)}
.info-cover{display:block;position:relative}
.info-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0}
.info-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,20,0) 45%,rgba(6,11,20,.75) 100%)}
.info-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1}
.info-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--t3);margin-bottom:12px}
.info-meta .badge{color:var(--brand-light);border-color:rgba(43,232,201,.28);background:rgba(43,232,201,.08)}
.info-body h3{font-size:18px;line-height:1.5}
.info-body h3 a{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.info-body p{margin-top:10px;font-size:14px;color:var(--t2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.info-more{margin-top:auto;padding-top:16px;font-size:13.5px;color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.empty-state{border:1px dashed rgba(255,255,255,.16);border-radius:var(--r-card);padding:56px 24px;text-align:center;background:rgba(255,255,255,.015)}
.empty-state svg{width:40px;height:40px;margin:0 auto 16px;stroke:var(--t3);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.empty-state p{color:var(--t2);font-size:15px}
.empty-state .btn{margin-top:20px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px}
.faq .accordion,.faq ul.accordion{margin:0;background:transparent;border:0;border-radius:0}
.faq .accordion-item{margin-bottom:12px;background:var(--ink-700);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color .2s var(--ease)}
.faq .accordion-item:hover{border-color:var(--line-glow)}
.faq .accordion-item.is-active{border-color:rgba(43,232,201,.35)}
.faq .accordion-title{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 22px;font-size:16px;font-weight:700;color:var(--t1);border:0;background:transparent;line-height:1.6}
.faq .accordion-title:hover,.faq .accordion-title:focus{background:rgba(255,255,255,.02);color:var(--t1)}
.faq .accordion-title::before{display:none}
.faq .accordion-title::after{
  content:"";flex:0 0 12px;width:12px;height:12px;margin:0;position:static;transform:none;
  border-right:1.6px solid var(--brand);border-bottom:1.6px solid var(--brand);
  rotate:45deg;transition:rotate .22s var(--ease);
}
.faq .accordion-item.is-active .accordion-title::after{rotate:-135deg}
.faq .accordion-content{padding:0 22px 20px;font-size:15px;color:var(--t2);line-height:1.85;border:0;background:transparent}
.faq .accordion-content p+p{margin-top:10px}

/* ---------- CTA ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:24px;padding:56px 48px;border:1px solid var(--line);background:linear-gradient(120deg,rgba(22,199,168,.14) 0%,rgba(108,92,231,.12) 55%,rgba(6,11,20,0) 100%),var(--ink-800)}
.cta-band h2{font-size:30px;max-width:16em}
.cta-band p{margin-top:14px;color:var(--t2);max-width:34em}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}

/* ---------- Footer ---------- */
.site-footer{margin-top:auto;border-top:1px solid var(--line);background:var(--ink-800);position:relative}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(43,232,201,.55),rgba(108,92,231,.4),transparent)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 40px}
.footer-grid h4{font-size:15px;margin-bottom:18px;color:var(--t1)}
.footer-grid p{font-size:14px;color:var(--t3);line-height:1.9;max-width:30em}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:var(--t2);position:relative;display:inline-block;width:fit-content}
.footer-links a::after{content:"";position:absolute;left:0;bottom:-2px;width:100%;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease)}
.footer-links a:hover::after{transform:scaleX(1)}
.footer-contact li{font-size:14px;color:var(--t2);margin-bottom:11px;display:flex;gap:9px;align-items:center}
.footer-contact svg{width:18px;height:18px;stroke:var(--brand);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex:0 0 18px}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0 28px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--t3)}

/* ---------- Responsive ---------- */
@media (min-width:1024px) and (max-width:1279px){
  :root{--shell:76px}
  .brand-text,.nav-label,.shell-foot .btn span,.shell-copy{display:none}
  .app-shell{padding:22px 12px 18px}
  .brand{justify-content:center;padding:6px 0 18px}
  .nav-item{justify-content:center;padding:12px 0}
  .nav-item::after{
    content:attr(data-title);position:absolute;left:calc(100% + 14px);top:50%;
    transform:translateY(-50%) scale(.96);transform-origin:left center;
    background:#0B1524;border:1px solid var(--line);color:var(--t1);
    padding:7px 12px;border-radius:10px;font-size:13px;white-space:nowrap;
    opacity:0;pointer-events:none;transition:opacity .18s var(--ease),transform .18s var(--ease);z-index:80;
  }
  .nav-item:hover::after{opacity:1;transform:translateY(-50%) scale(1)}
  .shell-foot{align-items:center}
  .shell-foot .btn{padding:0;width:44px;min-height:44px}
}
@media (max-width:1023px){
  :root{--shell:0px}
  body{padding-top:64px}
  .topbar{display:flex}
  .app-shell{width:282px;transform:translateX(-100%);transition:transform .24s var(--ease);box-shadow:var(--sh-float);padding:22px 16px 18px}
  .app-shell.is-open{transform:translateX(0)}
  .hero{padding:56px 0 64px}
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:34px;max-width:none}
  .limited{grid-template-columns:1fr;gap:22px;padding:24px 22px}
  .cta-band{padding:40px 24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px}
}
@media (max-width:860px){
  .tier-list{flex-direction:column;align-items:stretch}
  .tier{min-height:0 !important}
  .tier .badge{position:static;margin-bottom:12px}
  .tier-rights{margin-top:12px}
  .sec{padding:72px 0}
  .sec-head h2{font-size:26px}
  .container{padding:0 28px}
  .plan-col.is-best{transform:none}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .sec{padding:56px 0}
  .hero h1{font-size:28px}
  .hero-sub{font-size:16px}
  .hero-actions .btn{flex:1 1 100%}
  .trust-row{gap:14px 20px;margin-top:28px}
  .sec-head{margin-bottom:30px}
  .sec-head h2,.cta-band h2{font-size:22px}
  .cd-num{font-size:34px}
  .cd-colon{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:40px 0 24px}
  .footer-bottom{flex-direction:column;gap:8px}
  .consult-form{padding:22px 18px}
  .hero-card{padding:22px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.01ms !important}
  .btn:hover,.tier:hover,.plan-col:hover,.scene-card:hover,.info-card:hover,.point-list li:hover{transform:none !important;filter:none !important}
}

/* roulang page: category1 */
:root{
  --ink-900:#060B14;--ink-800:#0B1524;--ink-700:#122238;
  --brand:#16C7A8;--brand-bright:#2BE8C9;--brand-dark:#0E8C7A;
  --promo:#FFB43C;--promo-dark:#E08A18;--violet:#6C5CE7;
  --t1:#EAF2FA;--t2:#9FB2C7;--t3:#64798F;
  --line:rgba(255,255,255,.08);--line-hi:rgba(43,232,201,.35);
  --ok:#34D399;--err:#F87171;--warn:#FBBF24;
  --r-card:18px;--r-btn:12px;--r-input:12px;--r-img:14px;
  --sh-card:0 18px 48px rgba(0,0,0,.45);
  --sh-float:0 28px 70px rgba(0,0,0,.55);
  --glow:0 0 0 1px rgba(43,232,201,.25),0 10px 30px rgba(43,232,201,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-w:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;background:var(--ink-900);color:var(--t1);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.9;letter-spacing:0;font-weight:400;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{margin:0;font-family:inherit;font-weight:700;line-height:1.25;letter-spacing:-.01em;color:var(--t1)}
h1{font-size:44px;font-weight:800}
h2{font-size:32px;font-weight:800}
h3{font-size:22px}
h4{font-size:17px}
p{margin:0 0 1em;color:var(--t2)}
p:last-child{margin-bottom:0}
a{color:var(--brand-bright);text-decoration:none;transition:color .2s var(--ease)}
a:hover,a:focus{color:#8BF6E2}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-img)}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:15px;color:var(--t1)}
:focus-visible{outline:2px solid var(--brand-bright);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#04211C;padding:10px 16px;border-radius:0 0 12px 0;z-index:200}
.skip-link:focus{left:0}

/* ============ 左侧 App Shell 导航 ============ */
.app-shell{
  position:fixed;left:0;top:0;bottom:0;width:var(--nav-w);z-index:120;
  display:flex;flex-direction:column;gap:22px;padding:24px 16px;
  background:rgba(18,34,56,.55);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border-right:1px solid rgba(120,220,255,.14);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .26s var(--ease),width .26s var(--ease);
}
.brand{display:flex;align-items:center;gap:10px;padding:6px 10px;min-height:48px}
.brand-mark{
  width:34px;height:34px;flex:0 0 auto;border-radius:10px;
  background:linear-gradient(135deg,var(--brand),var(--violet));
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:800;color:#04211C;letter-spacing:-.02em;
  box-shadow:0 0 0 1px rgba(43,232,201,.35),0 8px 22px rgba(22,199,168,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:15px;font-weight:800;color:var(--t1);white-space:nowrap}
.brand-sub{font-size:12px;color:var(--t3);white-space:nowrap}
.shell-nav{display:flex;flex-direction:column;gap:6px;flex:1 1 auto}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;min-height:44px;
  padding:11px 14px;border-radius:12px;color:var(--t2);font-size:15px;font-weight:600;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-item svg{width:20px;height:20px;flex:0 0 auto;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.nav-item:hover{background:rgba(22,199,168,.08);color:var(--t1)}
.nav-item.is-active{color:var(--brand-bright);background:rgba(22,199,168,.12)}
.nav-item.is-active::before{
  content:"";position:absolute;left:-10px;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:3px;background:var(--brand-bright);
  box-shadow:0 0 12px rgba(43,232,201,.85);
}
.nav-label{white-space:nowrap}
.shell-foot{padding:0 10px;display:flex;flex-direction:column;gap:10px}
.shell-cta{
  display:flex;align-items:center;justify-content:center;min-height:42px;padding:0 14px;
  border-radius:12px;font-size:14px;font-weight:700;color:#04211C !important;
  background:linear-gradient(135deg,var(--brand),var(--brand-bright));
  box-shadow:var(--glow);
}
.shell-cta:hover{transform:translateY(-2px);filter:brightness(1.06)}
.shell-copy{font-size:12px;color:var(--t3);line-height:1.6}

.shell-backdrop{
  position:fixed;inset:0;background:rgba(3,7,14,.7);z-index:110;
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s;
}
.shell-backdrop.is-on{opacity:1;visibility:visible}

.mobile-bar{
  position:fixed;top:0;left:0;right:0;height:60px;z-index:100;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:0 16px;background:rgba(6,11,20,.92);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
}
.mobile-bar .brand{padding:0}
.nav-toggle{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line);border-radius:12px;cursor:pointer;
}
.nav-toggle svg{width:22px;height:22px;fill:none;stroke:var(--t1);stroke-width:1.5;stroke-linecap:round}

.shell-main{margin-left:var(--nav-w);min-height:60vh}
.site-footer{margin-left:var(--nav-w)}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section.tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
  font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--brand);
  text-transform:uppercase;
}
.section-head h2{margin-bottom:14px}
.section-head p{font-size:16px;line-height:1.9;margin:0}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);display:inline-block}
.divider{height:1px;border:0;background:linear-gradient(90deg,transparent,rgba(43,232,201,.35),transparent);margin:0}

/* ============ 分类 Hero ============ */
.cat-hero{
  position:relative;overflow:hidden;padding:64px 0 72px;
  background-image:linear-gradient(rgba(6,11,20,.86),rgba(6,11,20,.94)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:48px 48px;
}
.cat-hero .container{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--t3);margin-bottom:26px;flex-wrap:wrap}
.crumb a{color:var(--t2)}
.crumb a:hover{color:var(--brand-bright)}
.crumb span[aria-current]{color:var(--brand)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.eyebrow-pill{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(22,199,168,.12);border:1px solid rgba(43,232,201,.28);
  color:var(--brand-bright);font-size:13px;font-weight:700;margin-bottom:20px;
}
.cat-hero h1{margin-bottom:18px}
.lead{font-size:17px;line-height:1.9;color:var(--t2);max-width:560px;margin-bottom:24px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  font-size:13px;color:var(--t2);transition:border-color .2s var(--ease),color .2s var(--ease)
}
.tag:hover{border-color:var(--line-hi);color:var(--t1)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-figure{
  margin:0;border-radius:var(--r-card);overflow:hidden;
  border:1px solid rgba(120,220,255,.18);
  background:rgba(18,34,56,.55);
  -webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh-float);
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.hero-figure:hover{transform:translateY(-4px);border-color:var(--line-hi)}
.hero-figure img{width:100%;border-radius:0;aspect-ratio:4/3;object-fit:cover}
.stat-row{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-top:56px;
}
.stat{
  background:var(--ink-800);border:1px solid var(--line);border-radius:14px;
  padding:20px;transition:transform .22s var(--ease),border-color .22s var(--ease)
}
.stat:hover{transform:translateY(-4px);border-color:var(--line-hi)}
.stat-num{font-family:ui-monospace,"DIN Alternate",monospace;font-variant-numeric:tabular-nums;font-size:30px;font-weight:800;color:var(--brand-bright);line-height:1.2}
.stat-label{font-size:13px;color:var(--t3);margin-top:6px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;
  padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:transform .2s var(--ease),box-shadow .22s var(--ease),filter .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-bright));
  color:#04211C !important;box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(43,232,201,.45),0 14px 34px rgba(43,232,201,.32);color:#04211C !important}
.btn-ghost{background:rgba(255,255,255,.02);border-color:var(--line-hi);color:var(--t1) !important}
.btn-ghost:hover{border-color:var(--brand-bright);color:var(--brand-bright) !important;transform:translateY(-2px)}
.btn-promo{background:linear-gradient(135deg,var(--promo),var(--promo-dark));color:#2A1700 !important}
.btn-promo:hover{transform:translateY(-2px);filter:brightness(1.06);color:#2A1700 !important}
.btn:active{transform:translateY(0) scale(.99)}

/* ============ 准备清单 ============ */
.prep-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.prep-card{
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease)
}
.prep-card:hover{transform:translateY(-4px);border-color:var(--line-hi);box-shadow:var(--sh-card)}
.prep-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(22,199,168,.12);border:1px solid rgba(43,232,201,.22);margin-bottom:16px
}
.prep-icon svg{width:22px;height:22px;fill:none;stroke:var(--brand-bright);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.prep-card h3{font-size:17px;margin-bottom:10px}
.prep-card p{font-size:14.5px;line-height:1.8;margin:0;color:var(--t2)}

/* ============ 五步时间轴 ============ */
.timeline{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px}
.tl-item{
  position:relative;background:var(--ink-800);border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px 20px 22px;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease)
}
.tl-item::after{
  content:"";position:absolute;top:42px;right:-13px;width:8px;height:8px;
  border-top:1.5px solid var(--brand-dark);border-right:1.5px solid var(--brand-dark);
  transform:rotate(45deg);z-index:3
}
.tl-item:last-child::after{display:none}
.tl-item:hover{transform:translateY(-4px);border-color:var(--line-hi);box-shadow:var(--sh-card)}
.tl-item.is-live{border-color:rgba(43,232,201,.4);box-shadow:0 0 0 1px rgba(43,232,201,.18)}
.tl-index{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;
  border-radius:12px;font-family:ui-monospace,"DIN Alternate",monospace;font-size:15px;font-weight:800;
  background:rgba(22,199,168,.12);border:1px solid rgba(43,232,201,.25);color:var(--brand-bright);
  margin-bottom:16px;font-variant-numeric:tabular-nums
}
.tl-item h3{font-size:17px;margin-bottom:10px}
.tl-item p{font-size:14.5px;line-height:1.8;margin:0;color:var(--t2)}
.tl-note{display:block;margin-top:12px;font-size:13px;color:var(--promo)}

/* ============ 场景卡 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.scene-card{
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease)
}
.scene-card:hover{transform:translateY(-4px);border-color:var(--line-hi);box-shadow:var(--sh-card)}
.scene-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0}
.scene-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.scene-body h3{font-size:18px}
.scene-body p{font-size:14.5px;line-height:1.8;margin:0;color:var(--t2)}
.scene-badge{
  align-self:flex-start;display:inline-flex;padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:700;color:var(--brand-bright);
  background:rgba(22,199,168,.1);border:1px solid rgba(43,232,201,.22)
}

/* ============ FAQ ============ */
.faq-accordion{
  background:transparent;border:0;margin:0;padding:0;display:grid;gap:12px;list-style:none
}
.faq-accordion .accordion-item{
  background:var(--ink-800);border:1px solid var(--line);border-radius:14px;overflow:hidden;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease)
}
.faq-accordion .accordion-item:hover{border-color:rgba(43,232,201,.22)}
.faq-accordion .accordion-item.is-active{border-color:var(--line-hi);box-shadow:0 12px 34px rgba(0,0,0,.35)}
.faq-accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:700;line-height:1.5;
  color:var(--t1) !important;background:transparent;border:0;
  transition:color .2s var(--ease)
}
.faq-accordion .accordion-title:hover{color:var(--brand-bright) !important}
.faq-accordion .accordion-title::before{content:none !important;display:none !important}
.faq-accordion .accordion-title::after{
  content:"";flex:0 0 auto;width:9px;height:9px;margin-top:-4px;
  border-right:1.5px solid var(--brand);border-bottom:1.5px solid var(--brand);
  transform:rotate(45deg);transition:transform .24s var(--ease),margin-top .24s var(--ease)
}
.faq-accordion .accordion-item.is-active .accordion-title::after{transform:rotate(-135deg);margin-top:4px}
.faq-accordion .accordion-content{
  padding:0 22px 22px;background:transparent;border:0;
  font-size:15px;line-height:1.85;color:var(--t2)
}
.faq-accordion .accordion-content p{margin:0;color:var(--t2);font-size:15px}

/* ============ CTA 条 ============ */
.cat-cta{
  position:relative;overflow:hidden;border-radius:var(--r-card);
  border:1px solid rgba(120,220,255,.16);
  background:linear-gradient(120deg,rgba(18,34,56,.92),rgba(11,21,36,.96));
  padding:48px 40px;display:grid;grid-template-columns:1.4fr auto;gap:32px;align-items:center;
  box-shadow:var(--sh-card)
}
.cat-cta::before{
  content:"";position:absolute;left:0;top:0;height:1px;width:100%;
  background:linear-gradient(90deg,transparent,rgba(43,232,201,.6),transparent)
}
.cat-cta h2{font-size:28px;margin-bottom:12px}
.cat-cta p{max-width:620px;margin:0;font-size:15.5px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 页脚 ============ */
.site-footer{border-top:1px solid var(--line);background:var(--ink-800);padding:64px 0 0;position:relative}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,232,201,.45),transparent)
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:48px}
.site-footer h4{font-size:15px;margin-bottom:16px;color:var(--t1)}
.site-footer p{font-size:14px;line-height:1.85;color:var(--t2);max-width:330px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--t2);display:inline-block;position:relative;padding-bottom:2px}
.footer-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--brand-bright);transition:width .24s var(--ease)
}
.footer-links a:hover{color:var(--brand-bright)}
.footer-links a:hover::after{width:100%}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--t2)}
.footer-contact svg{width:18px;height:18px;flex:0 0 auto;fill:none;stroke:var(--brand);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0;border-top:1px solid var(--line);font-size:13px;color:var(--t3)
}

/* ============ 响应式 ============ */
@media (min-width:1024px) and (max-width:1279px){
  :root{--nav-w:76px}
  .app-shell{padding:20px 12px;gap:18px;overflow:visible}
  .brand{justify-content:center;padding:4px 0}
  .brand-text{display:none}
  .nav-item{justify-content:center;padding:11px 8px}
  .nav-item .nav-label{display:none}
  .nav-item:hover .nav-label{
    display:block;position:absolute;left:66px;top:50%;transform:translateY(-50%);
    background:var(--ink-700);border:1px solid var(--line);border-radius:10px;
    padding:6px 12px;white-space:nowrap;z-index:130;font-size:13px;color:var(--t1);
    box-shadow:var(--sh-card)
  }
  .nav-item.is-active::before{left:-12px}
  .shell-foot{display:none}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .prep-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .timeline{grid-template-columns:repeat(3,minmax(0,1fr))}
  .tl-item::after{display:none}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-row{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cat-cta{grid-template-columns:1fr;padding:40px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:1023px){
  .app-shell{transform:translateX(-100%);width:280px;padding-top:76px}
  .app-shell.is-open{transform:translateX(0);box-shadow:var(--sh-float)}
  .mobile-bar{display:flex}
  .shell-main{margin-left:0;padding-top:60px}
  .site-footer{margin-left:0}
  .shell-main{padding-top:60px}
  h1{font-size:34px}
  h2{font-size:26px}
  h3{font-size:20px}
  .section{padding:72px 0}
  .container{padding:0 28px}
  .cat-hero{padding:48px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .stat-row{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:40px}
  .prep-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .timeline{grid-template-columns:repeat(2,minmax(0,1fr))}
  .tl-item::after{display:none}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cat-cta{grid-template-columns:1fr;padding:36px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (min-width:1024px){
  .mobile-bar{display:none}
  .shell-backdrop{display:none}
}
@media (max-width:639px){
  h1{font-size:28px}
  h2{font-size:22px}
  h3{font-size:18px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .cat-cta h2{font-size:22px}
  .hero-grid{gap:28px}
  .prep-grid,.timeline,.scene-grid,.stat-row{grid-template-columns:1fr}
  .prep-card,.tl-item{padding:20px 18px}
  .hero-actions .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .cat-cta{padding:28px 20px}
  .stat-num{font-size:26px}
  .lead{font-size:15.5px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .prep-card:hover,.tl-item:hover,.scene-card:hover,.hero-figure:hover,.stat:hover{transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --ink-900:#060B14;
  --ink-800:#0B1524;
  --ink-700:#122238;
  --brand:#16C7A8;
  --brand-bright:#2BE8C9;
  --brand-deep:#0E8C7A;
  --promo:#FFB43C;
  --promo-deep:#E08A18;
  --violet:#6C5CE7;
  --t1:#EAF2FA;
  --t2:#9FB2C7;
  --t3:#64798F;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(43,232,201,.35);
  --ok:#34D399;
  --err:#F87171;
  --warn:#FBBF24;
  --r-card:18px;
  --r-btn:12px;
  --r-input:12px;
  --r-img:14px;
  --sh-card:0 18px 48px rgba(0,0,0,.45);
  --sh-float:0 28px 70px rgba(0,0,0,.55);
  --sh-glow:0 0 0 1px rgba(43,232,201,.25), 0 10px 30px rgba(43,232,201,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --shell-w:248px;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--t1);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:-0.01em;
  background-image:
    linear-gradient(rgba(43,232,201,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(43,232,201,.05) 1px,transparent 1px);
  background-size:64px 64px;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
p{margin:0 0 1em}
button,input,select,textarea{font:inherit;color:inherit}
table{border-collapse:collapse}
:focus-visible{outline:2px solid var(--brand-bright);outline-offset:2px}
::selection{background:rgba(43,232,201,.28);color:#fff}

.skip-link{position:absolute;left:-999px;top:0;z-index:200;background:var(--ink-700);padding:10px 16px;border-radius:0 0 12px 0}
.skip-link:focus{left:0}

.container{width:100%;max-width:1240px;margin:0 auto;padding-left:40px;padding-right:40px}
.section{padding:96px 0}
.section-tight{padding:64px 0}

h1,h2,h3,h4{font-weight:800;line-height:1.25;letter-spacing:-0.01em;margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--brand-bright);letter-spacing:.08em;
  padding:6px 12px;border-radius:999px;border:1px solid var(--line-strong);
  background:rgba(22,199,168,.08);margin-bottom:18px;
}
.sec-head{max-width:720px;margin-bottom:40px}
.sec-head h2{font-size:32px;margin-bottom:12px}
.sec-head p{color:var(--t2);font-size:15px;line-height:1.8;margin:0}

/* ---------- 左侧 App Shell ---------- */
.app-shell{
  position:fixed;top:0;left:0;bottom:0;width:var(--shell-w);
  display:flex;flex-direction:column;gap:24px;
  padding:24px 18px;
  background:rgba(18,34,56,.55);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border-right:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  z-index:70;
  transition:transform 240ms var(--ease);
}
.shell-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  display:grid;place-items:center;
  font-size:14px;font-weight:800;letter-spacing:0;
  color:#04231D;
  background:linear-gradient(140deg,var(--brand-bright),var(--brand));
  box-shadow:var(--sh-glow);
}
.brand-text{font-size:15px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.shell-close{
  display:none;width:34px;height:34px;border-radius:10px;
  background:transparent;border:1px solid var(--line);cursor:pointer;
  align-items:center;justify-content:center;
}
.shell-close svg{width:16px;height:16px;fill:none;stroke:var(--t2);stroke-width:1.6;stroke-linecap:round}

.shell-nav{display:flex;flex-direction:column;gap:6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:12px;
  color:var(--t2);font-size:15px;font-weight:600;
  border:1px solid transparent;min-height:44px;
  transition:color 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease);
}
.nav-item svg{width:20px;height:20px;flex:0 0 20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.nav-item::before{
  content:"";position:absolute;left:-18px;top:12px;bottom:12px;width:3px;border-radius:0 3px 3px 0;
  background:linear-gradient(180deg,var(--brand-bright),var(--brand-deep));
  opacity:0;transition:opacity 180ms var(--ease);
}
.nav-item:hover{color:var(--t1);background:rgba(43,232,201,.07);border-color:var(--line)}
.nav-item.is-active{color:var(--t1);background:rgba(43,232,201,.1);border-color:var(--line-strong)}
.nav-item.is-active::before{opacity:1}
.nav-label{white-space:nowrap}

.shell-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px}
.shell-cta{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 16px;border-radius:var(--r-btn);
  font-size:14px;font-weight:700;color:#04231D;
  background:linear-gradient(140deg,var(--brand-bright),var(--brand));
  box-shadow:var(--sh-glow);
  transition:filter 180ms var(--ease),transform 180ms var(--ease);
}
.shell-cta svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.shell-cta:hover{filter:brightness(1.08);transform:translateY(-1px)}
.shell-copy{font-size:12px;color:var(--t3);margin:0;line-height:1.6}

.shell-backdrop{
  position:fixed;inset:0;background:rgba(3,7,13,.68);
  opacity:0;visibility:hidden;transition:opacity 200ms var(--ease),visibility 200ms var(--ease);
  z-index:60;
}
.shell-backdrop.is-on{opacity:1;visibility:visible}

.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:62px;
  align-items:center;justify-content:space-between;padding:0 18px;
  background:rgba(6,11,20,.88);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);z-index:65;
}
.topbar-brand{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700}
.nav-burger{
  width:44px;height:44px;border-radius:12px;background:transparent;
  border:1px solid var(--line);display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:4px;cursor:pointer;
}
.nav-burger span{display:block;width:18px;height:1.6px;background:var(--t1);border-radius:2px;transition:transform 180ms var(--ease),opacity 180ms var(--ease)}
.nav-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(5.6px) rotate(45deg)}
.nav-burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.6px) rotate(-45deg)}

.shell-wrap{margin-left:var(--shell-w);min-height:100vh;display:flex;flex-direction:column}
.shell-main{flex:1 0 auto}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;padding:72px 0 44px;
  background:
    linear-gradient(180deg,rgba(6,11,20,.72),rgba(6,11,20,.96)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:20px}
.crumbs a{color:var(--t2);transition:color 180ms var(--ease)}
.crumbs a:hover{color:var(--brand-bright)}
.crumbs .sep{color:rgba(255,255,255,.22)}
.crumbs .current{color:var(--t2);max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-title{font-size:44px;max-width:900px;margin-bottom:22px}
.article-meta{display:flex;flex-wrap:wrap;gap:10px}
.meta-item{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--t2);
  padding:6px 13px;border-radius:999px;
  border:1px solid var(--line);background:var(--ink-800);
  font-variant-numeric:tabular-nums;
}
.meta-item svg{width:15px;height:15px;fill:none;stroke:var(--brand);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 文章主体 ---------- */
.article-section{padding:64px 0 80px}
.article-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:56px;align-items:start}
.article-toc{position:sticky;top:28px;display:none}
.article-toc.is-ready{display:block}
.toc-card{
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px 18px;box-shadow:var(--sh-card);
}
.toc-title{
  font-size:13px;font-weight:700;color:var(--t3);letter-spacing:.08em;
  margin:0 0 12px;padding-bottom:10px;border-bottom:1px solid var(--line);
}
#tocList{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
#tocList a{
  display:block;font-size:13.5px;line-height:1.6;color:var(--t2);
  padding:7px 10px;border-radius:9px;border-left:2px solid transparent;
  transition:color 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease);
}
#tocList a:hover{color:var(--brand-bright);background:rgba(43,232,201,.07)}
#tocList a.is-current{color:var(--t1);background:rgba(43,232,201,.1);border-left-color:var(--brand-bright)}
.toc-empty{font-size:13px;color:var(--t3);margin:0}

.article-main{min-width:0}
.article-content{
  max-width:760px;font-size:16px;line-height:1.9;color:var(--t1);
  background:var(--ink-800);border:1px solid var(--line);
  border-radius:var(--r-card);padding:40px;box-shadow:var(--sh-card);
}
.article-content>*:first-child{margin-top:0}
.article-content p{margin:0 0 1em}
.article-content h2{
  position:relative;font-size:22px;margin:2.1em 0 .8em;padding-left:14px;scroll-margin-top:90px;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.32em;bottom:.32em;width:4px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand-bright),var(--brand-deep));
}
.article-content h3{font-size:18px;margin:1.7em 0 .6em;color:var(--t1);scroll-margin-top:90px}
.article-content h4{font-size:16px;margin:1.4em 0 .5em;color:var(--t2)}
.article-content ul,.article-content ol{padding-left:1.35em;margin:0 0 1.2em}
.article-content li{margin:.35em 0}
.article-content li::marker{color:var(--brand)}
.article-content a{color:var(--brand-bright);border-bottom:1px solid rgba(43,232,201,.4);transition:border-color 180ms var(--ease)}
.article-content a:hover{border-bottom-color:var(--brand-bright)}
.article-content strong{color:#fff;font-weight:700}
.article-content img{border-radius:var(--r-img);border:1px solid var(--line);margin:1.4em 0}
.article-content figure{margin:1.4em 0}
.article-content figcaption{font-size:13px;color:var(--t3);text-align:center;margin-top:-.8em}
.article-content blockquote{
  margin:1.4em 0;padding:14px 20px;color:var(--t2);
  background:rgba(22,199,168,.06);
  border-left:3px solid var(--brand);border-radius:0 12px 12px 0;
}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content code{
  font-family:ui-monospace,"DIN Alternate",Menlo,Consolas,monospace;
  font-size:.9em;padding:2px 6px;border-radius:6px;
  background:var(--ink-800);border:1px solid var(--line);color:var(--brand-bright);
}
.article-content pre{
  background:var(--ink-700);border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;overflow:auto;margin:1.4em 0;
  font-family:ui-monospace,"DIN Alternate",Menlo,Consolas,monospace;font-size:14px;line-height:1.7;
}
.article-content pre code{background:none;border:0;padding:0;color:var(--t1)}
.article-content table{width:100%;margin:1.4em 0;font-size:14px;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.article-content th,.article-content td{border-bottom:1px solid var(--line);padding:11px 14px;text-align:left}
.article-content th{background:var(--ink-700);color:var(--t2);font-weight:700}
.article-content tbody tr:last-child td{border-bottom:0}
.article-content hr{border:0;height:1px;background:var(--line);margin:2em 0}

.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:28px 0 0}
.tag-row .tag-label{font-size:13px;color:var(--t3);margin-right:2px}
.tag{
  display:inline-flex;align-items:center;font-size:13px;color:var(--t2);
  padding:6px 14px;border-radius:999px;border:1px solid var(--line);background:var(--ink-800);
  transition:color 180ms var(--ease),border-color 180ms var(--ease);
}
.tag:hover{color:var(--brand-bright);border-color:var(--line-strong)}

.pager{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:32px;max-width:760px}
.pager-card{
  display:flex;flex-direction:column;gap:6px;
  padding:18px 20px;border-radius:var(--r-card);
  background:var(--ink-800);border:1px solid var(--line);
  transition:transform 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.pager-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--sh-card)}
.pager-card .dir{font-size:12px;color:var(--t3);letter-spacing:.06em}
.pager-card .ttl{font-size:15px;font-weight:700;color:var(--t1)}
.pager-card.next{text-align:right;align-items:flex-end}

.empty-state{
  border:1px dashed rgba(255,255,255,.16);border-radius:var(--r-card);
  padding:56px 24px;text-align:center;color:var(--t2);
  background:var(--ink-800);
}
.empty-state svg{width:44px;height:44px;margin:0 auto 16px;fill:none;stroke:var(--brand);stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}
.empty-title{font-size:18px;font-weight:700;color:var(--t1);margin:0 0 8px}
.empty-desc{font-size:14px;max-width:420px;margin:0 auto 22px;line-height:1.8}

/* ---------- 相关推荐 ---------- */
.related-grid{margin-top:8px}
.related-grid .cell{margin-bottom:0}
.rec-card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  border-radius:var(--r-card);background:var(--ink-700);
  border:1px solid var(--line);box-shadow:var(--sh-card);
  transition:transform 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.rec-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--sh-float)}
.rec-media{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--ink-800)}
.rec-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease)}
.rec-card:hover .rec-media img{transform:scale(1.05)}
.rec-body{display:flex;flex-direction:column;gap:10px;padding:20px;flex:1}
.badge{
  align-self:flex-start;font-style:normal;font-size:12px;font-weight:700;
  color:var(--promo);background:rgba(255,180,60,.12);
  border:1px solid rgba(255,180,60,.3);
  padding:3px 11px;border-radius:999px;
}
.rec-body strong{font-size:16px;line-height:1.5;color:var(--t1)}
.rec-desc{font-size:13.5px;color:var(--t2);line-height:1.75}
.rec-more{margin-top:auto;font-size:13px;color:var(--brand-bright);font-weight:600}

/* ---------- 咨询 CTA ---------- */
.cta-band{
  border-radius:var(--r-card);
  background:linear-gradient(140deg,rgba(22,199,168,.14),rgba(108,92,231,.12)),var(--ink-800);
  border:1px solid var(--line);
  padding:44px 40px;
  display:flex;flex-wrap:wrap;gap:26px;align-items:center;justify-content:space-between;
  box-shadow:var(--sh-card);
}
.cta-band h2{font-size:26px;margin-bottom:10px}
.cta-band p{color:var(--t2);font-size:15px;margin:0;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;cursor:pointer;border:1px solid transparent;
  transition:filter 180ms var(--ease),transform 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease),background 180ms var(--ease);
}
.btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.btn-primary{color:#04231D;background:linear-gradient(140deg,var(--brand-bright),var(--brand));box-shadow:var(--sh-glow)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);color:#04231D}
.btn-ghost{color:var(--t1);background:rgba(18,34,56,.6);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--line-strong);color:var(--brand-bright);transform:translateY(-2px)}

/* ---------- 页脚 ---------- */
.site-footer{
  flex:0 0 auto;margin-top:auto;
  border-top:1px solid var(--line);
  background:var(--ink-800);
  padding:64px 0 0;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--brand),var(--violet),transparent);
  opacity:.6;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer-grid h4{font-size:15px;color:var(--t1);margin-bottom:16px}
.footer-grid p{font-size:13.5px;color:var(--t2);line-height:1.85;margin:0}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:13.5px;color:var(--t2);transition:color 180ms var(--ease)}
.footer-links a:hover{color:var(--brand-bright)}
.footer-contact{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.footer-contact li{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--t2)}
.footer-contact svg{width:17px;height:17px;flex:0 0 17px;fill:none;stroke:var(--brand);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  border-top:1px solid var(--line);padding:20px 0 26px;
  font-size:12.5px;color:var(--t3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--shell-w:76px}
  .container{padding-left:28px;padding-right:28px}
  .section{padding:72px 0}
  .article-title{font-size:34px}
  .sec-head h2{font-size:26px}
  .app-shell{padding:22px 12px;align-items:stretch}
  .shell-head{justify-content:center}
  .brand{justify-content:center}
  .brand-text{display:none}
  .nav-item{justify-content:center;padding:12px 0}
  .nav-item::before{left:-12px}
  .nav-label{
    position:absolute;left:66px;top:50%;transform:translateY(-50%) scale(.96);
    background:var(--ink-700);border:1px solid var(--line);
    padding:6px 12px;border-radius:10px;font-size:13px;font-weight:600;
    white-space:nowrap;opacity:0;pointer-events:none;
    box-shadow:var(--sh-card);
    transition:opacity 180ms var(--ease),transform 180ms var(--ease);
    z-index:5;
  }
  .nav-item:hover .nav-label{opacity:1;transform:translateY(-50%) scale(1)}
  .shell-cta span{display:none}
  .shell-cta{padding:0;width:44px}
  .shell-copy{display:none}
  .shell-foot{align-items:center}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .article-content{padding:32px;max-width:none}
  .pager{max-width:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:36px 30px}
}
@media (min-width:1280px){
  .article-toc{margin-top:4px}
}
@media (max-width:1023px){
  .shell-wrap{margin-left:0;padding-top:62px}
  .app-shell{
    width:280px;transform:translateX(-100%);
    align-items:stretch;padding:22px 20px;
  }
  .app-shell.is-open{transform:none}
  .shell-head{justify-content:space-between}
  .brand{justify-content:flex-start}
  .brand-text{display:block}
  .nav-item{justify-content:flex-start;padding:12px 12px}
  .nav-item::before{left:-20px}
  .nav-label{position:static;opacity:1;transform:none;background:none;border:0;padding:0;box-shadow:none;pointer-events:auto}
  .shell-cta{padding:0 16px;width:auto}
  .shell-cta span{display:inline}
  .shell-copy{display:block}
  .shell-foot{align-items:stretch}
  .nav-burger{display:flex}
  .shell-close{display:flex}
  .article-hero{padding:52px 0 34px}
}
@media (max-width:767px){
  body{font-size:15px}
  .container{padding-left:20px;padding-right:20px}
  .section{padding:56px 0}
  .section-tight{padding:44px 0}
  .article-hero{padding:44px 0 30px}
  .article-title{font-size:28px}
  .sec-head h2{font-size:22px}
  .article-section{padding:44px 0 60px}
  .article-content{padding:22px 18px;border-radius:16px}
  .article-content h2{font-size:19px}
  .article-content h3{font-size:17px}
  .crumbs .current{max-width:70vw}
  .pager{grid-template-columns:1fr}
  .pager-card.next{text-align:left;align-items:flex-start}
  .cta-band{padding:28px 22px;gap:20px}
  .cta-band h2{font-size:22px}
  .btn{width:100%}
  .cta-actions{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .rec-card:hover,.pager-card:hover,.btn:hover{transform:none}
  .rec-card:hover .rec-media img{transform:none}
}

/* roulang page: category2 */
:root{
  --ink-900:#060B14;
  --ink-800:#0B1524;
  --ink-700:#122238;
  --brand:#16C7A8;
  --brand-bright:#2BE8C9;
  --brand-deep:#0E8C7A;
  --promo:#FFB43C;
  --promo-deep:#E08A18;
  --violet:#6C5CE7;
  --t1:#EAF2FA;
  --t2:#9FB2C7;
  --t3:#64798F;
  --line:rgba(255,255,255,.08);
  --line-hover:rgba(43,232,201,.35);
  --ok:#34D399;
  --err:#F87171;
  --warn:#FBBF24;
  --r-card:18px;
  --r-btn:12px;
  --r-input:12px;
  --r-img:14px;
  --sh-card:0 18px 48px rgba(0,0,0,.45);
  --sh-float:0 28px 70px rgba(0,0,0,.55);
  --glow:0 0 0 1px rgba(43,232,201,.25), 0 10px 30px rgba(43,232,201,.22);
  --glass:rgba(18,34,56,.55);
  --container:1240px;
  --shell-w:248px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num:ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--t1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  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:56px 56px;
  opacity:.6;
  z-index:0;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-img);}
a{color:var(--brand-bright);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-bright);}
h1,h2,h3,h4{margin:0 0 .6em;line-height:1.25;letter-spacing:-.01em;font-weight:700;color:var(--t1);}
h1{font-size:44px;font-weight:800;}
h2{font-size:32px;}
h3{font-size:22px;}
h4{font-size:17px;}
p{margin:0 0 1em;color:var(--t2);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-bright);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(43,232,201,.28);}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand-bright);color:#04211C;padding:10px 18px;border-radius:0 0 12px 0;z-index:200;}
.skip-link:focus{left:0;}

/* ============ 左导航 App Shell ============ */
.app-shell{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--shell-w);
  display:flex;
  flex-direction:column;
  padding:24px 16px 20px;
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-right:1px solid rgba(120,220,255,.14);
  z-index:60;
}
.app-shell::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,232,201,.6),transparent);
}
.brand{display:flex;align-items:center;gap:10px;padding:6px 8px 20px;color:var(--t1);}
.brand:hover{color:var(--t1);}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(140deg,var(--brand-bright),var(--brand-deep));
  color:#04211C;font-weight:800;font-size:14px;letter-spacing:0;
  box-shadow:0 8px 20px rgba(43,232,201,.28);
}
.brand-text{font-weight:800;font-size:16px;white-space:nowrap;letter-spacing:-.01em;}
.shell-nav{display:flex;flex-direction:column;gap:6px;flex:1 1 auto;overflow-y:auto;}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:12px;
  min-height:48px;padding:0 12px;
  border-radius:12px;
  color:var(--t2);font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.nav-item svg{width:22px;height:22px;flex:0 0 22px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.nav-item:hover{background:rgba(43,232,201,.08);color:var(--t1);border-color:var(--line);}
.nav-item.is-active{background:rgba(43,232,201,.12);color:var(--brand-bright);border-color:rgba(43,232,201,.28);}
.nav-item.is-active::before{
  content:"";position:absolute;left:-16px;top:12px;bottom:12px;width:3px;border-radius:0 3px 3px 0;
  background:var(--brand-bright);box-shadow:0 0 12px rgba(43,232,201,.8);
}
.nav-label{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.shell-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);}
.shell-copy{margin:12px 0 0;font-size:12px;color:var(--t3);line-height:1.6;word-break:break-all;}

/* ============ 顶栏（移动端） ============ */
.mobile-bar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:64px;
  align-items:center;justify-content:space-between;
  padding:0 20px;
  background:rgba(6,11,20,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  z-index:70;
}
.mobile-bar .brand{padding:0;}
.nav-toggle{
  width:44px;height:44px;display:grid;place-items:center;
  border-radius:12px;border:1px solid var(--line);background:var(--ink-800);color:var(--t1);cursor:pointer;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--line-hover);background:rgba(43,232,201,.1);}
.nav-toggle svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;}
.shell-backdrop{
  display:none;position:fixed;inset:0;background:rgba(3,7,14,.6);z-index:55;
  opacity:0;pointer-events:none;transition:opacity .22s var(--ease);
}

/* ============ 主内容 ============ */
.shell-main{
  position:relative;
  margin-left:var(--shell-w);
  min-height:100vh;
  z-index:1;
}
section{padding:96px 0;}
section.tight{padding:64px 0;}
.section-head{max-width:780px;margin-bottom:40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--brand-bright);
  padding:6px 14px;border-radius:999px;
  background:rgba(43,232,201,.1);border:1px solid rgba(43,232,201,.24);
  margin-bottom:16px;
}
.eyebrow svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;}
.lead{font-size:16px;color:var(--t2);max-width:760px;}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  padding:72px 0 64px;
  background-image:linear-gradient(180deg,rgba(6,11,20,.78),rgba(6,11,20,.94)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(43,232,201,.16),transparent 68%);
  pointer-events:none;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:20px;}
.breadcrumb a{color:var(--t2);}
.breadcrumb a:hover{color:var(--brand-bright);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb span.sep{color:var(--t3);}
.breadcrumb .current{color:var(--brand-bright);}
.hero-title{font-size:44px;margin-bottom:14px;}
.hero-title em{font-style:normal;color:var(--brand-bright);}
.hero-sub{font-size:17px;color:var(--t2);max-width:680px;margin-bottom:26px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px 28px;font-size:14px;color:var(--t3);}
.hero-meta span{display:inline-flex;align-items:center;gap:8px;}
.hero-meta svg{width:16px;height:16px;fill:none;stroke:var(--brand);stroke-width:1.5;stroke-linecap:round;}

/* 筛选标签行 */
.filter-row{
  display:flex;flex-wrap:wrap;gap:10px;
  padding-top:28px;margin-top:28px;border-top:1px solid var(--line);
}
.filter-chip{
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;padding:8px 18px;
  border-radius:999px;cursor:pointer;
  background:var(--ink-800);
  border:1px solid var(--line);
  color:var(--t2);font-size:14px;font-weight:600;
  transition:all .2s var(--ease);
}
.filter-chip svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;}
.filter-chip:hover{border-color:var(--line-hover);color:var(--t1);transform:translateY(-2px);}
.filter-chip.is-on{
  background:linear-gradient(140deg,rgba(43,232,201,.22),rgba(14,140,122,.16));
  border-color:rgba(43,232,201,.5);color:var(--brand-bright);
  box-shadow:0 8px 22px rgba(43,232,201,.18);
}
.filter-note{font-size:13px;color:var(--t3);margin-top:14px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:48px;padding:12px 26px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.btn-glow{
  background:linear-gradient(135deg,var(--brand-bright),var(--brand-deep));
  color:#04211C;
  box-shadow:var(--glow);
}
.btn-glow:hover{filter:brightness(1.08);box-shadow:0 0 0 1px rgba(43,232,201,.4),0 14px 38px rgba(43,232,201,.34);transform:translateY(-2px);color:#04211C;}
.btn-ghost{background:transparent;color:var(--brand-bright);border-color:rgba(43,232,201,.4);}
.btn-ghost:hover{background:rgba(43,232,201,.1);border-color:var(--brand-bright);transform:translateY(-2px);}
.btn-block{width:100%;}
.btn-sm{min-height:40px;padding:8px 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;}

/* ============ 对比卡 ============ */
.compare-wrap{padding-top:8px;}
.compare-grid{align-items:stretch;}
.compare-col{
  display:flex;flex-direction:column;
  background:var(--ink-800);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  margin-bottom:24px;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease),opacity .22s var(--ease);
}
.compare-col:hover{transform:translateY(-4px);border-color:var(--line-hover);box-shadow:var(--sh-card);}
.compare-col.is-dim{opacity:.42;}
.compare-col.is-best{
  border-color:rgba(43,232,201,.42);
  box-shadow:0 18px 48px rgba(0,0,0,.5),0 0 0 1px rgba(43,232,201,.18);
  background:linear-gradient(180deg,rgba(22,199,168,.08),rgba(11,21,36,.9) 42%);
}
.compare-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:14px;}
.compare-name{font-size:20px;font-weight:800;margin:0;}
.compare-code{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:13px;color:var(--t3);letter-spacing:.06em;margin-top:2px;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.02em;white-space:nowrap;
}
.badge-rec{background:linear-gradient(135deg,var(--promo),var(--promo-deep));color:#2A1700;}
.badge-soft{background:rgba(43,232,201,.12);color:var(--brand-bright);border:1px solid rgba(43,232,201,.28);}
.badge-line{background:transparent;color:var(--t2);border:1px solid var(--line);}
.compare-price{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:34px;font-weight:800;color:var(--t1);line-height:1.2;margin:8px 0 4px;
}
.compare-price small{font-size:14px;font-weight:600;color:var(--t3);margin-left:6px;letter-spacing:0;}
.compare-desc{font-size:14px;color:var(--t2);margin:0 0 18px;min-height:52px;}
.spec-list{border-top:1px solid var(--line);margin:0 0 20px;}
.spec-row{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  min-height:52px;padding:10px 0;
  border-bottom:1px solid var(--line);
  font-size:14px;
}
.spec-row:nth-child(odd){background:rgba(255,255,255,.03);}
.spec-key{color:var(--t3);display:inline-flex;align-items:center;gap:8px;}
.spec-val{color:var(--t1);font-weight:600;display:inline-flex;align-items:center;gap:7px;text-align:right;}
.ico-yes,.ico-no{width:18px;height:18px;flex:0 0 18px;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.ico-yes{stroke:var(--brand-bright);}
.ico-no{stroke:var(--t3);}
.compare-col .btn{margin-top:auto;}

/* ============ 差异说明 ============ */
.diff-section{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.diff-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.diff-item{
  display:flex;gap:16px;
  padding:22px;
  background:var(--ink-900);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.diff-item:hover{border-color:var(--line-hover);transform:translateY(-4px);}
.diff-icon{
  width:44px;height:44px;flex:0 0 44px;display:grid;place-items:center;
  border-radius:12px;background:rgba(43,232,201,.1);border:1px solid rgba(43,232,201,.22);
}
.diff-icon svg{width:22px;height:22px;fill:none;stroke:var(--brand-bright);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.diff-item h3{font-size:17px;margin-bottom:6px;}
.diff-item p{margin:0;font-size:14px;line-height:1.8;}

/* ============ 适配建议（图文） ============ */
.fit-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;}
.fit-media{position:relative;}
.fit-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line);}
.fit-media .tag-float{
  position:absolute;left:18px;bottom:18px;
  background:rgba(6,11,20,.82);backdrop-filter:blur(10px);
  border:1px solid rgba(43,232,201,.28);border-radius:12px;
  padding:10px 16px;font-size:13px;color:var(--brand-bright);font-weight:700;
}
.check-list{display:flex;flex-direction:column;gap:14px;margin-top:8px;}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--t2);line-height:1.8;}
.check-list svg{width:20px;height:20px;flex:0 0 20px;margin-top:5px;fill:none;stroke:var(--brand-bright);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.check-list strong{color:var(--t1);font-weight:700;}
.stat-row{display:flex;flex-wrap:wrap;gap:16px;margin-top:28px;}
.stat{
  flex:1 1 130px;
  padding:16px 18px;border-radius:14px;
  background:var(--ink-800);border:1px solid var(--line);
}
.stat b{display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:26px;color:var(--brand-bright);line-height:1.2;}
.stat span{font-size:13px;color:var(--t3);}

/* ============ FAQ ============ */
.faq-section{background:linear-gradient(180deg,rgba(11,21,36,.7),rgba(6,11,20,1));}
.accordion{border:0;background:transparent;margin:0;}
.accordion .accordion-item{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--ink-800);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s var(--ease);
}
.accordion .accordion-item:hover{border-color:var(--line-hover);}
.accordion .accordion-item.is-active{border-color:rgba(43,232,201,.35);}
.accordion .accordion-title{
  display:flex;align-items:center;
  padding:18px 56px 18px 20px;
  font-size:16px;font-weight:600;color:var(--t1);
  background:transparent;border:0;
  position:relative;
}
.accordion .accordion-title:hover{background:rgba(43,232,201,.06);color:var(--brand-bright);}
.accordion .accordion-title::before{
  position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-size:20px;line-height:1;color:var(--brand-bright);
}
.accordion .accordion-content{
  padding:0 20px 20px;border:0;background:transparent;
  color:var(--t2);font-size:15px;line-height:1.85;
}
.accordion .accordion-content p:last-child{margin-bottom:0;}

/* ============ 表单区 ============ */
.consult-section{position:relative;}
.consult-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:start;}
.point-list{display:flex;flex-direction:column;gap:18px;margin:26px 0 0;}
.point-list li{display:flex;gap:14px;align-items:flex-start;}
.point-num{
  width:30px;height:30px;flex:0 0 30px;display:grid;place-items:center;border-radius:9px;
  font-family:var(--font-num);font-size:13px;font-weight:700;
  background:rgba(43,232,201,.12);border:1px solid rgba(43,232,201,.26);color:var(--brand-bright);
}
.point-list p{margin:0;font-size:15px;}
.care-card{
  margin-top:28px;padding:20px;
  border:1px dashed rgba(43,232,201,.3);border-radius:var(--r-card);
  background:rgba(43,232,201,.05);
  font-size:14px;color:var(--t2);
}
.care-card strong{color:var(--brand-bright);display:block;margin-bottom:6px;font-size:15px;}
.form-card{
  background:var(--ink-800);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--sh-card);
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--t1);margin-bottom:8px;}
.field label .req{color:var(--err);margin-left:4px;}
.field input[type="text"],
.field input[type="tel"],
.field input[type="email"],
.field select,
.field textarea{
  width:100%;
  background:var(--ink-900);
  border:1px solid var(--line);
  border-radius:var(--r-input);
  color:var(--t1);
  font-size:15px;font-family:inherit;
  padding:13px 15px;
  min-height:48px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  appearance:none;
}
.field textarea{min-height:110px;resize:vertical;line-height:1.7;}
.field select{background-image:linear-gradient(45deg,transparent 50%,var(--t2) 50%),linear-gradient(135deg,var(--t2) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:44px;}
.field input::placeholder,.field textarea::placeholder{color:var(--t3);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(43,232,201,.16);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--err);box-shadow:0 0 0 3px rgba(248,113,113,.14);}
.err-msg{display:none;font-size:13px;color:var(--err);margin-top:6px;}
.field.has-error .err-msg{display:block;}
.check-line{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--t2);}
.check-line input{width:18px;height:18px;margin-top:4px;accent-color:var(--brand);flex:0 0 18px;}
.check-line a{text-decoration:underline;text-underline-offset:3px;}
.form-tip{font-size:13px;color:var(--t3);margin:14px 0 0;text-align:center;}
.form-success{
  display:none;
  text-align:center;padding:44px 24px;
  border:1px solid rgba(52,211,153,.4);border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(52,211,153,.1),rgba(11,21,36,.9));
}
.form-success.is-on{display:block;}
.form-success svg{width:52px;height:52px;margin:0 auto 16px;fill:none;stroke:var(--ok);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.form-success h3{margin-bottom:8px;}
.form-success p{margin:0;font-size:15px;}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;
  border-radius:var(--r-card);
  padding:36px 40px;
  background:linear-gradient(120deg,rgba(22,199,168,.16),rgba(108,92,231,.14));
  border:1px solid rgba(43,232,201,.24);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background:linear-gradient(180deg,var(--brand-bright),var(--violet));
}
.cta-band h2{margin:0 0 6px;font-size:24px;}
.cta-band p{margin:0;font-size:15px;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:var(--ink-800);
  padding:64px 0 0;
  margin-top:32px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,232,201,.5),rgba(108,92,231,.35),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px;}
.footer-grid h4{font-size:15px;margin-bottom:16px;color:var(--t1);}
.footer-grid p{font-size:14px;color:var(--t3);line-height:1.8;margin:0;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--t2);position:relative;display:inline-block;width:fit-content;}
.footer-links a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;background:var(--brand-bright);
  transition:width .22s var(--ease);
}
.footer-links a:hover{color:var(--brand-bright);}
.footer-links a:hover::after{width:100%;}
.footer-contact{display:flex;flex-direction:column;gap:12px;}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--t2);}
.footer-contact svg{width:18px;height:18px;flex:0 0 18px;margin-top:4px;fill:none;stroke:var(--brand);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;align-items:center;
  padding:20px 0 26px;border-top:1px solid var(--line);
  font-size:13px;color:var(--t3);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--shell-w:76px;}
  .app-shell{padding:20px 10px;}
  .brand{padding:6px 0 20px;justify-content:center;}
  .brand-text{display:none;}
  .nav-item{justify-content:center;padding:0;gap:0;}
  .nav-label{
    display:none;position:absolute;left:64px;top:50%;transform:translateY(-50%);
    background:var(--ink-700);border:1px solid var(--line-hover);
    padding:6px 12px;border-radius:9px;font-size:13px;color:var(--t1);white-space:nowrap;
    box-shadow:var(--sh-card);z-index:80;
  }
  .nav-item:hover .nav-label{display:block;}
  .shell-foot .btn{font-size:0;padding:0;width:44px;min-height:44px;margin:0 auto;display:flex;}
  .shell-foot .btn svg{width:20px;height:20px;}
  .shell-copy{display:none;}
}
@media (max-width:1023px){
  body::before{display:none;}
  .mobile-bar{display:flex;}
  .app-shell{
    width:280px;padding:18px 14px;
    transform:translateX(-102%);
    transition:transform .26s var(--ease);
    background:rgba(9,17,29,.97);
  }
  body.nav-open .app-shell{transform:translateX(0);}
  body.nav-open .shell-backdrop{display:block;opacity:1;pointer-events:auto;}
  .brand{justify-content:flex-start;padding-left:8px;}
  .brand-text{display:block;}
  .nav-item{justify-content:flex-start;padding:0 12px;gap:12px;}
  .nav-label{display:block;position:static;transform:none;background:transparent;border:0;padding:0;box-shadow:none;font-size:15px;color:inherit;}
  .shell-foot .btn{font-size:15px;width:100%;padding:12px 20px;}
  .shell-foot .btn svg{width:18px;height:18px;}
  .shell-copy{display:block;}
  .shell-main{margin-left:0;padding-top:64px;}
  .container{padding:0 28px;}
  section{padding:72px 0;}
  h1,.hero-title{font-size:34px;}
  h2{font-size:26px;}
  .fit-grid,.consult-grid{grid-template-columns:1fr;gap:32px;}
  .diff-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
}
@media (max-width:639px){
  .container{padding:0 20px;}
  section{padding:56px 0;}
  body{font-size:15px;}
  h1,.hero-title{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  .page-hero{padding:52px 0 44px;}
  .compare-price{font-size:28px;}
  .cta-band{padding:26px 22px;flex-direction:column;align-items:flex-start;}
  .cta-band .btn{width:100%;}
  .form-card{padding:20px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .stat-row{gap:12px;}
  .stat{flex:1 1 100%;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .compare-col:hover,.diff-item:hover,.btn:hover{transform:none !important;}
}

/* roulang page: category3 */
/* ================= 设计变量 ================= */
:root{
  --ink-900:#060B14;
  --ink-800:#0B1524;
  --ink-700:#122238;
  --brand:#16C7A8;
  --brand-bright:#2BE8C9;
  --brand-deep:#0E8C7A;
  --promo:#FFB43C;
  --promo-deep:#E08A18;
  --violet:#6C5CE7;
  --t1:#EAF2FA;
  --t2:#9FB2C7;
  --t3:#64798F;
  --line:rgba(255,255,255,.08);
  --line-hover:rgba(43,232,201,.35);
  --ok:#34D399;
  --err:#F87171;
  --warn:#FBBF24;
  --r-card:20px;
  --r-btn:12px;
  --r-img:14px;
  --sh-card:0 18px 48px rgba(0,0,0,.45);
  --sh-float:0 28px 70px rgba(0,0,0,.55);
  --glow:0 0 0 1px rgba(43,232,201,.25), 0 10px 30px rgba(43,232,201,.22);
  --shell-w:248px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ================= reset / base ================= */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--t1);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-bright);}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em;color:var(--t1);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-bright);outline-offset:2px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#04201B;padding:10px 16px;z-index:99;border-radius:0 0 10px 0;}
.skip-link:focus{left:0;}

/* 覆盖 Foundation 默认味道 */
body,button,input,select,textarea{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;}
button,.button{border-radius:var(--r-btn);}
.off-canvas{background:transparent;}
.off-canvas-content{background:var(--ink-900);min-height:100vh;}
.grid-margin-x>.cell{margin-bottom:0;}

/* ================= 容器与排版 ================= */
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}
.section{padding:0 0 96px;}
.section-head{margin-bottom:28px;}
.section-head h2{font-size:32px;}
.section-head p{margin-top:10px;color:var(--t2);font-size:15px;max-width:760px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.16em;color:var(--brand);text-transform:uppercase;margin-bottom:14px;}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--brand),transparent);}

/* ================= 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;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .24s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.btn-primary{background:var(--brand);color:#04231D;box-shadow:var(--glow);}
.btn-primary:hover{background:var(--brand-bright);color:#04231D;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(43,232,201,.4),0 14px 36px rgba(43,232,201,.32);}
.btn-ghost{background:transparent;color:var(--t1);border-color:rgba(255,255,255,.18);}
.btn-ghost:hover{border-color:var(--brand-bright);color:var(--brand-bright);transform:translateY(-2px);}
.btn-promo{background:transparent;color:var(--promo);border-color:rgba(255,180,60,.4);}
.btn-promo:hover{background:rgba(255,180,60,.12);color:var(--promo);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn:active{transform:translateY(0);}
.btn[disabled]{opacity:.5;cursor:default;transform:none;box-shadow:none;}

/* ================= 左侧 App Shell ================= */
.off-canvas.position-left.app-shell{
  background:rgba(18,34,56,.55);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border-right:1px solid rgba(120,220,255,.14);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  padding:22px 16px 18px;
  display:flex;flex-direction:column;gap:22px;
}
.shell-brand{display:flex;align-items:center;gap:12px;padding:6px 10px 0;}
.shell-brand .mark{
  flex:none;width:38px;height:38px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(22,199,168,.28),rgba(108,92,231,.28));
  border:1px solid rgba(43,232,201,.35);
  color:var(--brand-bright);
}
.shell-brand .mark svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.shell-brand .brand-text{display:flex;flex-direction:column;line-height:1.2;}
.shell-brand strong{font-size:15px;font-weight:800;letter-spacing:-.01em;}
.shell-brand small{font-size:11px;color:var(--t3);letter-spacing:.06em;}

.shell-nav{display:flex;flex-direction:column;gap:6px;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:46px;padding:0 12px;border-radius:12px;
  color:var(--t2);font-size:15px;font-weight:500;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.nav-item svg{flex:none;width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.nav-item::before{
  content:"";position:absolute;left:-16px;top:11px;bottom:11px;width:3px;border-radius:0 3px 3px 0;
  background:linear-gradient(180deg,var(--brand-bright),var(--brand-deep));
  opacity:0;transition:opacity .2s var(--ease);
}
.nav-item:hover{background:rgba(43,232,201,.08);color:var(--t1);}
.nav-item.is-active{color:var(--brand-bright);background:rgba(43,232,201,.10);}
.nav-item.is-active::before{opacity:1;box-shadow:0 0 14px rgba(43,232,201,.7);}
.nav-label{white-space:nowrap;}

.shell-foot{margin-top:auto;display:flex;flex-direction:column;gap:14px;padding:0 4px;}
.shell-cta{width:100%;}
.shell-copy{font-size:12px;color:var(--t3);text-align:center;line-height:1.6;}

/* 移动端顶栏 */
.shell-topbar{
  position:fixed;top:0;left:0;right:0;height:62px;z-index:50;
  display:flex;align-items:center;gap:14px;padding:0 18px;
  background:rgba(11,21,36,.94);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.menu-btn{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(18,34,56,.6);color:var(--t1);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
}
.menu-btn svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;}
.menu-btn:hover{border-color:var(--line-hover);color:var(--brand-bright);}
.topbar-brand{font-size:15px;font-weight:800;color:var(--t1);letter-spacing:-.01em;}
.topbar-brand span{color:var(--brand-bright);}
.nav-scrim{position:fixed;inset:0;background:rgba(4,8,16,.7);z-index:15;border:0;padding:0;}
.nav-scrim[hidden]{display:none;}

.shell-main{padding:26px 0 96px;}

/* ================= Hero 精简条 ================= */
.cat-hero{
  position:relative;overflow:hidden;border-radius:24px;
  padding:52px 44px 46px;
  border:1px solid var(--line);
  background-image:linear-gradient(115deg,rgba(6,11,20,.92) 20%,rgba(6,11,20,.78) 60%,rgba(22,199,168,.20) 130%),
    url(/assets/images/backpic/back-1.png);
  background-size:cover;background-position:center;
  box-shadow:var(--sh-float);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;opacity:.07;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:52px 52px;
}
.hero-inner{position:relative;z-index:2;max-width:840px;}
.crumbs{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--t3);margin-bottom:18px;flex-wrap:wrap;}
.crumbs a{color:var(--t2);}
.crumbs a:hover{color:var(--brand-bright);}
.crumbs .sep{color:var(--t3);}
.crumbs [aria-current]{color:var(--brand);}
.cat-hero h1{font-size:44px;letter-spacing:-.02em;}
.hero-sub{margin-top:16px;font-size:17px;color:var(--t2);max-width:640px;line-height:1.85;}
.hero-facts{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px 24px;}
.hero-facts li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--t2);}
.hero-facts svg{width:18px;height:18px;fill:none;stroke:var(--brand);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}

/* ================= 筛选标签 ================= */
.filter-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:18px 22px;border-radius:18px;
  background:var(--ink-800);border:1px solid var(--line);
}
.filter-chip{
  height:38px;padding:0 18px;border-radius:999px;cursor:pointer;
  background:transparent;border:1px solid var(--line);color:var(--t2);
  font-size:14px;font-weight:500;
  transition:all .2s var(--ease);
}
.filter-chip:hover{border-color:var(--line-hover);color:var(--t1);}
.filter-chip.is-active{
  background:rgba(43,232,201,.14);border-color:rgba(43,232,201,.5);color:var(--brand-bright);
  box-shadow:0 0 0 1px rgba(43,232,201,.16);
}
.filter-count{margin-left:auto;font-size:13px;color:var(--t3);font-variant-numeric:tabular-nums;}
.filter-count b{color:var(--promo);font-weight:700;}

/* ================= 图集卡片墙 ================= */
.gallery-grid{align-items:flex-start;}
.fig-cell{margin-bottom:26px;}
.fig-card{
  position:relative;display:flex;flex-direction:column;height:100%;overflow:hidden;
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.fig-card:hover{transform:translateY(-4px);border-color:var(--line-hover);box-shadow:var(--sh-card);}
.fig-media{position:relative;margin:0;overflow:hidden;background:var(--ink-800);}
.fig-media img{width:100%;aspect-ratio:4 / 3;object-fit:cover;transition:transform .4s var(--ease);}
.fig-card:hover .fig-media img{transform:scale(1.04);}
.fig-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,20,0) 42%,rgba(6,11,20,.62));}
.fig-badge{
  position:absolute;top:14px;left:14px;z-index:2;
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(6,11,20,.72);border:1px solid rgba(43,232,201,.35);color:var(--brand-bright);
}
.fig-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.fig-body h3{font-size:18px;line-height:1.4;}
.fig-body p{font-size:14px;color:var(--t2);line-height:1.8;flex:1;}
.fig-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--t3);font-variant-numeric:tabular-nums;
}
.fig-meta svg{width:15px;height:15px;fill:none;stroke:var(--t3);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}

.load-more-wrap{margin-top:8px;display:flex;flex-direction:column;align-items:center;gap:12px;}
.load-more-wrap p{font-size:13px;color:var(--t3);}

.empty-state{
  padding:56px 24px;text-align:center;border-radius:var(--r-card);
  border:1px dashed rgba(255,255,255,.16);background:rgba(11,21,36,.6);
}
.empty-state svg{width:38px;height:38px;margin:0 auto 14px;fill:none;stroke:var(--t3);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.empty-state p{font-size:14px;color:var(--t2);}

/* ================= 使用说明三步 ================= */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.step-card{
  position:relative;padding:26px 24px 24px;border-radius:var(--r-card);
  background:var(--ink-800);border:1px solid var(--line);
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.step-card:hover{border-color:var(--line-hover);transform:translateY(-3px);}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;margin-bottom:16px;
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
  background:rgba(22,199,168,.14);border:1px solid rgba(43,232,201,.32);color:var(--brand-bright);
}
.step-card h3{font-size:18px;margin-bottom:8px;}
.step-card p{font-size:14px;color:var(--t2);line-height:1.8;}
.step-line{height:1px;background:linear-gradient(90deg,rgba(43,232,201,.5),rgba(108,92,231,.35),transparent);margin-top:24px;}

/* ================= 相关链接区 ================= */
.link-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.link-card{
  display:flex;flex-direction:column;gap:10px;
  padding:24px 22px;border-radius:var(--r-card);
  background:var(--ink-800);border:1px solid var(--line);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.link-card:hover{transform:translateY(-4px);border-color:var(--line-hover);box-shadow:var(--sh-card);}
.link-card .lc-icon{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(108,92,231,.16);border:1px solid rgba(108,92,231,.32);color:#B7AEFB;
}
.link-card .lc-icon svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.link-card h3{font-size:17px;color:var(--t1);}
.link-card p{font-size:14px;color:var(--t2);line-height:1.8;}
.link-card .lc-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--brand);font-weight:600;}
.link-card .lc-more svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s var(--ease);}
.link-card:hover .lc-more svg{transform:translateX(4px);}

/* ================= CTA 条 ================= */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:34px 38px;border-radius:24px;
  background:linear-gradient(120deg,rgba(22,199,168,.16),rgba(108,92,231,.12) 70%,rgba(6,11,20,0)),var(--ink-700);
  border:1px solid var(--line);
  box-shadow:var(--sh-card);
}
.cta-band h2{font-size:24px;}
.cta-band p{margin-top:10px;font-size:14.5px;color:var(--t2);max-width:620px;}
.cta-actions{display:flex;gap:12px;flex:none;flex-wrap:wrap;}

/* ================= 页脚 ================= */
.site-footer{
  margin-top:20px;border-top:1px solid transparent;
  background:linear-gradient(180deg,rgba(11,21,36,.2),rgba(6,11,20,.9));
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,232,201,.55),rgba(108,92,231,.4),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding:56px 0 40px;}
.site-footer h4{font-size:15px;margin-bottom:16px;color:var(--t1);}
.site-footer p{font-size:13.5px;color:var(--t2);line-height:1.85;max-width:320px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--t2);width:fit-content;position:relative;}
.footer-links a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;background:var(--brand-bright);
  transition:width .24s var(--ease);
}
.footer-links a:hover{color:var(--brand-bright);}
.footer-links a:hover::after{width:100%;}
.footer-contact{display:flex;flex-direction:column;gap:12px;}
.footer-contact li{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--t2);}
.footer-contact svg{flex:none;width:17px;height:17px;fill:none;stroke:var(--brand);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 28px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--t3);
}

/* ================= 响应式 ================= */
@media (min-width:1024px){
  .off-canvas.position-left.app-shell{
    position:fixed;top:0;left:0;height:100vh;width:var(--shell-w);
    transform:none !important;z-index:40;overflow-y:auto;
  }
  .off-canvas-content{margin-left:var(--shell-w);}
  .shell-topbar{display:none;}
  .nav-scrim{display:none !important;}
  .gallery-grid .fig-cell:nth-child(3n+2) .fig-card{margin-top:34px;}
}
@media (min-width:1024px) and (max-width:1279px){
  :root{--shell-w:76px;}
  .off-canvas.position-left.app-shell{padding:20px 10px 16px;gap:18px;}
  .shell-brand{justify-content:center;padding:0;}
  .shell-brand .brand-text{display:none;}
  .nav-item{justify-content:center;padding:0;}
  .nav-label{display:none;}
  .nav-item::after{
    content:attr(data-title);position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%);
    padding:6px 12px;border-radius:8px;white-space:nowrap;font-size:13px;
    background:var(--ink-700);border:1px solid var(--line);color:var(--t1);
    opacity:0;pointer-events:none;transition:opacity .18s var(--ease);
  }
  .nav-item:hover::after{opacity:1;}
  .shell-cta span{display:none;}
  .shell-copy{display:none;}
}
@media (max-width:1023px){
  .shell-main{padding-top:88px;}
  .off-canvas.position-left.app-shell{width:280px;z-index:60;}
  .nav-scrim{z-index:55;}
  .container{padding:0 28px;}
  .section{padding-bottom:72px;}
  .cat-hero{padding:40px 28px 36px;}
  .cat-hero h1{font-size:34px;}
  .section-head h2{font-size:26px;}
  .steps{grid-template-columns:1fr 1fr;}
  .link-cards{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band{flex-direction:column;align-items:flex-start;}
}
@media (max-width:767px){
  .gallery-grid .fig-cell:nth-child(3n+2) .fig-card{margin-top:0;}
}
@media (max-width:639px){
  .container{padding:0 20px;}
  .section{padding-bottom:56px;}
  .cat-hero{padding:32px 22px 30px;border-radius:20px;}
  .cat-hero h1{font-size:28px;}
  .hero-sub{font-size:15.5px;}
  .section-head h2{font-size:22px;}
  .steps{grid-template-columns:1fr;}
  .link-cards{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;padding:44px 0 32px;}
  .filter-bar{padding:14px 16px;}
  .filter-count{width:100%;margin-left:0;}
  .cta-band{padding:26px 22px;border-radius:20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .btn{height:44px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  .fig-card:hover,.link-card:hover,.step-card:hover{transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category4 */
:root{
  --ink-900:#060B14;
  --ink-800:#0B1524;
  --ink-700:#122238;
  --brand:#16C7A8;
  --brand-bright:#2BE8C9;
  --brand-deep:#0E8C7A;
  --promo:#FFB43C;
  --promo-deep:#E08A18;
  --violet:#6C5CE7;
  --t1:#EAF2FA;
  --t2:#9FB2C7;
  --t3:#64798F;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(43,232,201,.35);
  --glass:rgba(18,34,56,.55);
  --glass-line:rgba(120,220,255,.14);
  --ok:#34D399;
  --err:#F87171;
  --warn:#FBBF24;
  --r-card:18px;
  --r-btn:12px;
  --r-input:12px;
  --r-img:14px;
  --sh-card:0 18px 48px rgba(0,0,0,.45);
  --sh-float:0 28px 70px rgba(0,0,0,.55);
  --glow:0 0 0 1px rgba(43,232,201,.25), 0 10px 30px rgba(43,232,201,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --shell-w:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--t1);
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:-.01em;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color 200ms var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:none;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
svg{fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--brand-bright);outline-offset:2px;border-radius: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}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:40px;padding-right:40px}
.mono{font-family:ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,monospace;font-variant-numeric:tabular-nums}

/* ---------- App Shell ---------- */
.app-shell{
  position:fixed;top:0;left:0;width:var(--shell-w);height:100vh;z-index:60;
  display:flex;flex-direction:column;gap:18px;padding:22px 14px 18px;
  background:linear-gradient(180deg,rgba(18,34,56,.72),rgba(6,11,20,.86));
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-right:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  overflow-y:auto;
}
.shell-brand{padding:0 6px 4px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(22,199,168,.22),rgba(108,92,231,.18));
  border:1px solid var(--glass-line);
  color:var(--brand-bright);font-weight:800;font-size:15px;letter-spacing:.02em;
  box-shadow:0 0 0 1px rgba(43,232,201,.12),0 8px 22px rgba(22,199,168,.18);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text strong{font-size:15px;font-weight:800;color:var(--t1);white-space:nowrap}
.brand-text em{font-style:normal;font-size:12px;color:var(--t3);letter-spacing:.04em}
.shell-nav{display:flex;flex-direction:column;gap:6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:44px;padding:10px 12px;border-radius:12px;
  color:var(--t2);font-size:15px;font-weight:500;
  transition:background 200ms var(--ease),color 200ms var(--ease),transform 200ms var(--ease);
}
.nav-item svg{flex:0 0 20px;width:20px;height:20px}
.nav-item:hover{color:var(--t1);background:rgba(22,199,168,.09)}
.nav-item.is-active{color:var(--brand-bright);background:rgba(22,199,168,.13)}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:2px;background:var(--brand-bright);
  box-shadow:0 0 12px rgba(43,232,201,.7)
}
.nav-label{white-space:nowrap}
.shell-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px;padding:0 4px}
.shell-cta{
  display:flex;align-items:center;justify-content:center;min-height:44px;
  border-radius:var(--r-btn);font-size:14px;font-weight:700;color:#04140f;
  background:linear-gradient(135deg,var(--brand-bright),var(--brand-deep));
  box-shadow:0 10px 26px rgba(22,199,168,.26);
}
.shell-cta:hover{filter:brightness(1.08);box-shadow:0 12px 32px rgba(43,232,201,.4)}
.shell-copy{font-size:12px;line-height:1.7;color:var(--t3)}

.topbar{
  display:flex;align-items:center;gap:12px;
  position:fixed;top:0;left:0;right:0;height:60px;padding:0 16px;z-index:70;
  background:rgba(11,21,36,.92);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.drawer-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.drawer-toggle span{display:block;width:18px;height:1.5px;background:var(--t1);border-radius:2px}
.topbar-brand{font-size:16px;font-weight:800;color:var(--t1)}
.topbar-cta{
  margin-left:auto;padding:8px 16px;border-radius:999px;font-size:13px;font-weight:700;
  color:#04140f;background:linear-gradient(135deg,var(--brand-bright),var(--brand-deep));
}
.shell-scrim{
  position:fixed;inset:0;background:rgba(3,7,13,.72);z-index:55;
  opacity:0;visibility:hidden;transition:opacity 220ms var(--ease),visibility 220ms var(--ease);
}
.shell-scrim.is-open{opacity:1;visibility:visible}

.shell-main{margin-left:var(--shell-w);min-height:100vh}
.site-footer{margin-left:var(--shell-w)}

@media (min-width:1024px){.topbar{display:none}}
@media (max-width:1279px) and (min-width:1024px){
  :root{--shell-w:76px}
  .app-shell{padding:18px 8px 14px;gap:14px;align-items:center}
  .brand-text{display:none}
  .shell-brand{padding:0}
  .shell-nav{width:100%}
  .nav-item{justify-content:center;padding:10px 0}
  .nav-item .nav-label{
    position:absolute;left:calc(100% + 14px);top:50%;
    transform:translateY(-50%) scale(.94);transform-origin:left center;
    padding:6px 12px;border-radius:10px;white-space:nowrap;
    background:var(--ink-700);border:1px solid var(--line);
    color:var(--t1);font-size:13px;font-weight:600;
    opacity:0;pointer-events:none;
    transition:opacity 180ms var(--ease),transform 180ms var(--ease);
    box-shadow:0 12px 30px rgba(0,0,0,.5);
  }
  .nav-item:hover .nav-label{opacity:1;transform:translateY(-50%) scale(1)}
  .shell-cta{width:44px;padding:0;font-size:0}
  .shell-cta::after{content:"问";font-size:15px;font-weight:800}
  .shell-copy{display:none}
}
@media (max-width:1023px){
  .app-shell{
    width:268px;transform:translateX(-100%);
    transition:transform 260ms var(--ease);
  }
  .app-shell.is-open{transform:translateX(0)}
  .shell-main{margin-left:0;padding-top:60px}
  .site-footer{margin-left:0}
}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;position:relative}
.section--alt{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
  font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--brand-bright);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand-bright);opacity:.7}
h1{font-size:44px;font-weight:800}
h2{font-size:32px}
h3{font-size:22px}
.lead{font-size:16px;line-height:1.9;color:var(--t2);margin-top:16px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--t3);margin-bottom:18px;
}
.breadcrumb a:hover{color:var(--brand-bright)}
.breadcrumb .sep{color:var(--t3);opacity:.6}
.breadcrumb .now{color:var(--t2)}

.card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-card);
  transition:transform 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.card h3{margin-bottom:10px;font-size:20px}
.card p{color:var(--t2);font-size:15px;line-height:1.9}
.card-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(22,199,168,.12);border:1px solid var(--glass-line);color:var(--brand-bright);
  margin-bottom:16px;
}
.card-icon svg{width:22px;height:22px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;border:1px solid transparent;
  transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),background 200ms var(--ease),border-color 200ms var(--ease),color 200ms var(--ease),filter 200ms var(--ease);
}
.btn-primary{
  color:#04140f;background:linear-gradient(135deg,var(--brand-bright),var(--brand-deep));
  box-shadow:0 10px 26px rgba(22,199,168,.28);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 14px 36px rgba(43,232,201,.42)}
.btn-ghost{border-color:rgba(255,255,255,.14);background:rgba(255,255,255,.03);color:var(--t1)}
.btn-ghost:hover{border-color:var(--line-strong);color:var(--brand-bright);transform:translateY(-2px)}
.btn:active{transform:translateY(0) scale(.99)}

.tag{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;
  font-size:13px;font-weight:600;color:var(--t2);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  transition:all 200ms var(--ease);
}
.tag:hover,.tag.is-on{color:var(--brand-bright);border-color:var(--line-strong);background:rgba(22,199,168,.1)}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;padding:80px 0 64px;
  background-image:linear-gradient(180deg,rgba(6,11,20,.88),rgba(6,11,20,.96)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(43,232,201,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(43,232,201,.05) 1px,transparent 1px);
  background-size:64px 64px;
}
.page-hero > .container{position:relative;z-index:1}
.page-hero h1{max-width:820px}
.hero-sub{margin-top:16px;font-size:17px;color:var(--t2);max-width:640px}

.site-search{
  margin-top:32px;max-width:720px;display:flex;align-items:center;gap:10px;
  padding:8px 8px 8px 18px;border-radius:16px;
  background:rgba(11,21,36,.86);border:1px solid var(--line);
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.site-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 1px rgba(43,232,201,.28),0 12px 30px rgba(22,199,168,.18)}
.site-search svg{flex:0 0 20px;width:20px;height:20px;color:var(--t3)}
.site-search input{
  flex:1;min-width:0;height:44px;background:none;border:none;outline:none;
  font-size:15px;color:var(--t1);
}
.site-search input::placeholder{color:var(--t3)}
.site-search .btn{padding:0 20px}
.search-clear{
  flex:0 0 auto;font-size:13px;color:var(--t3);padding:0 10px;height:44px;border-radius:10px;
}
.search-clear:hover{color:var(--brand-bright)}
.hot-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px}
.hot-row .hot-label{font-size:13px;color:var(--t3)}

/* ---------- FAQ 折叠 ---------- */
.help-group{margin-bottom:36px}
.help-group-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.help-group-head .num{
  font-family:ui-monospace,Menlo,monospace;font-size:13px;font-weight:700;
  color:var(--brand-bright);padding:4px 10px;border-radius:999px;
  background:rgba(22,199,168,.1);border:1px solid var(--glass-line);
}
.help-group-head h2{font-size:22px}
.help-group-head .count{margin-left:auto;font-size:13px;color:var(--t3)}

.help-accordion.accordion{background:transparent;border:none;margin:0 0 0;max-width:none}
.help-accordion .accordion-item{
  background:var(--ink-800);border:1px solid var(--line);border-radius:14px;
  margin-bottom:12px;overflow:hidden;
  transition:border-color 200ms var(--ease),background 200ms var(--ease);
}
.help-accordion .accordion-item:hover{border-color:var(--line-strong)}
.help-accordion .accordion-item.is-active{background:var(--ink-700);border-color:var(--line-strong)}
.help-accordion .accordion-title{
  display:flex;align-items:center;gap:16px;
  padding:16px 20px;background:transparent;border:none;
  color:var(--t1);font-size:16px;font-weight:600;line-height:1.6;
  transition:color 200ms var(--ease);
}
.help-accordion .accordion-title::before{display:none !important}
.help-accordion .accordion-title:hover{background:rgba(22,199,168,.06);color:var(--brand-bright)}
.help-accordion .accordion-title .q-text{flex:1}
.help-accordion .accordion-title .chev{
  flex:0 0 auto;width:9px;height:9px;border-right:2px solid var(--t3);border-bottom:2px solid var(--t3);
  transform:rotate(45deg);transition:transform 220ms var(--ease),border-color 220ms var(--ease);
}
.help-accordion .accordion-item.is-active .accordion-title .chev{transform:rotate(-135deg);border-color:var(--brand-bright)}
.help-accordion .accordion-content{
  display:none;padding:0 20px 20px;border:none;background:transparent;color:var(--t2);font-size:15px;line-height:1.9;
}
.help-accordion .accordion-content p{margin-bottom:10px}
.help-accordion .accordion-content p:last-child{margin-bottom:0}
.help-accordion .accordion-content ol{counter-reset:step;margin:10px 0 0}
.help-accordion .accordion-content ol li{
  position:relative;padding-left:30px;margin-bottom:8px;color:var(--t2);
}
.help-accordion .accordion-content ol li::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:0;font-family:ui-monospace,Menlo,monospace;
  font-size:12px;font-weight:700;color:var(--brand-bright);line-height:1.9;
}
.help-accordion .accordion-content strong{color:var(--t1);font-weight:700}

/* ---------- 空态 ---------- */
.empty-state{
  display:none;flex-direction:column;align-items:center;justify-content:center;text-align:center;
  padding:56px 24px;border:1px dashed rgba(255,255,255,.16);border-radius:var(--r-card);
  background:rgba(11,21,36,.55);
}
.empty-state.is-on{display:flex}
.empty-state .empty-icon{
  width:56px;height:56px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  background:rgba(22,199,168,.1);border:1px solid var(--glass-line);color:var(--brand-bright);margin-bottom:18px;
}
.empty-state .empty-icon svg{width:26px;height:26px}
.empty-state h3{font-size:20px;margin-bottom:10px}
.empty-state p{color:var(--t2);font-size:15px;max-width:460px;margin-bottom:22px}

/* ---------- 数据条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-card);
}
.stat-item{padding:28px 24px;border-right:1px solid var(--line)}
.stat-item:last-child{border-right:none}
.stat-item .stat-num{
  font-family:ui-monospace,Menlo,monospace;font-size:38px;font-weight:800;
  color:var(--brand-bright);line-height:1.2;font-variant-numeric:tabular-nums;
}
.stat-item .stat-num small{font-size:16px;margin-left:4px;color:var(--t2);font-weight:600}
.stat-item .stat-label{margin-top:8px;font-size:14px;color:var(--t2)}
.stat-item .stat-note{margin-top:6px;font-size:13px;color:var(--t3)}

/* ---------- 联系卡 ---------- */
.contact-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:center}
.contact-media{
  border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-float);position:relative;
}
.contact-media img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover}
.contact-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,20,.05),rgba(6,11,20,.55));
}
.check-list{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--t2)}
.check-list li svg{flex:0 0 20px;width:20px;height:20px;margin-top:4px;color:var(--brand-bright)}

.channel-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.channel-pill{
  display:flex;align-items:center;gap:12px;flex:1 1 220px;min-height:64px;
  padding:14px 20px;border-radius:999px;
  background:var(--ink-700);border:1px solid var(--line);
  transition:transform 220ms var(--ease),border-color 220ms var(--ease),background 220ms var(--ease);
}
.channel-pill:hover{transform:translateY(-4px);border-color:var(--line-strong);background:var(--ink-800)}
.channel-pill .ic{
  flex:0 0 38px;width:38px;height:38px;border-radius:999px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(22,199,168,.12);color:var(--brand-bright);border:1px solid var(--glass-line);
}
.channel-pill .ic svg{width:19px;height:19px}
.channel-pill .txt{display:flex;flex-direction:column;min-width:0}
.channel-pill .txt b{font-size:15px;font-weight:700;color:var(--t1)}
.channel-pill .txt span{font-size:13px;color:var(--t3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:22px;padding:44px;
  background:
    linear-gradient(120deg,rgba(22,199,168,.16),rgba(108,92,231,.14)),
    linear-gradient(180deg,var(--ink-700),var(--ink-800));
  border:1px solid var(--glass-line);
  display:flex;flex-wrap:wrap;align-items:center;gap:24px;justify-content:space-between;
}
.cta-band h2{font-size:26px;margin-bottom:10px}
.cta-band p{color:var(--t2);font-size:15px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;padding:64px 0 28px;
  background:var(--ink-800);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,232,201,.45),rgba(108,92,231,.35),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.footer-grid h4{font-size:15px;font-weight:700;color:var(--t1);margin-bottom:16px}
.footer-grid p{font-size:14px;line-height:1.9;color:var(--t2);max-width:320px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--t2)}
.footer-links a:hover{color:var(--brand-bright)}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--t2)}
.footer-contact svg{flex:0 0 18px;width:18px;height:18px;color:var(--brand)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--t3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding-left:28px;padding-right:28px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  h1{font-size:34px}
  h2{font-size:26px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-2{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr;gap:28px}
  .page-hero{padding:56px 0 48px}
  .stat-strip{grid-template-columns:1fr}
  .stat-item{border-right:none;border-bottom:1px solid var(--line)}
  .stat-item:last-child{border-bottom:none}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{padding:32px}
}
@media (max-width:639px){
  .container{padding-left:20px;padding-right:20px}
  .section{padding:56px 0}
  h1{font-size:28px}
  h2{font-size:22px}
  h3{font-size:18px}
  body{font-size:15px}
  .lead,.hero-sub{font-size:15px}
  .grid-3{grid-template-columns:1fr}
  .site-search{flex-wrap:wrap;padding:12px}
  .site-search input{width:100%;flex:1 0 100%}
  .site-search .btn{width:100%}
  .search-clear{width:100%;text-align:center}
  .footer-grid{grid-template-columns:1fr}
  .channel-pill{flex:1 1 100%}
  .cta-actions .btn{width:100%}
  .stat-item .stat-num{font-size:32px}
}

@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
  .card:hover,.channel-pill:hover,.btn:hover{transform:none}
}