/* ============================================================
   极优网 · 样式表
   设计基调：深色高级感 + 金色点缀，强调「信任」与「品质」
   ============================================================ */

:root{
  --bg:#0a0b0e;
  --bg-2:#101218;
  --bg-3:#161922;
  --card:#14161d;
  --card-hi:#1c1f28;
  --line:rgba(255,255,255,.09);
  --line-str:rgba(255,255,255,.16);
  --txt:#eceef2;
  --txt-2:#a6acba;
  --txt-3:#6f7686;
  --gold:#e0b34c;
  --gold-2:#f5d478;
  --gold-dim:rgba(224,179,76,.14);
  --green:#31c48d;
  --red:#f0576a;
  --blue:#5b9dff;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 18px 50px rgba(0,0,0,.5);
  --max:1200px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{
  background:var(--bg);color:var(--txt);
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",system-ui,-apple-system,sans-serif;
  line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,textarea{font-family:inherit;font-size:inherit}
::selection{background:var(--gold);color:#000}

.container{max-width:var(--max);margin:0 auto;padding:0 28px}
.container.narrow{max-width:860px}
.section{padding:104px 0;position:relative}
.section-dark{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;margin-bottom:52px;flex-wrap:wrap}
.section-title{font-size:40px;font-weight:800;letter-spacing:-.5px;margin:10px 0 12px;line-height:1.25}
.section-desc{color:var(--txt-2);font-size:16px;max-width:620px}
.tag{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:2.4px;
  color:var(--gold);background:var(--gold-dim);padding:6px 13px;border-radius:100px;
}

/* ---------- 首屏 ---------- */
.hero{min-height:100vh;display:flex;flex-direction:column;justify-content:center;position:relative;overflow:hidden;padding:120px 0 80px}
.hero-glow{
  position:absolute;width:900px;height:900px;top:-380px;left:50%;transform:translateX(-50%);
  background:radial-gradient(circle,rgba(224,179,76,.16),transparent 62%);pointer-events:none;filter:blur(30px)
}
.hero-inner{max-width:900px;margin:0 auto;padding:0 28px;text-align:center;position:relative;z-index:2}
.hero-badge{
  display:inline-block;padding:8px 18px;border:1px solid var(--line-str);border-radius:100px;
  font-size:13px;color:var(--txt-2);margin-bottom:34px;background:rgba(255,255,255,.03);
}
.hero-title{font-size:76px;font-weight:900;letter-spacing:-2.5px;line-height:1.14;margin-bottom:28px}
.grad{
  background:linear-gradient(120deg,var(--gold-2),var(--gold),#c98f2a);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.hero-sub{font-size:19px;color:var(--txt-2);max-width:720px;margin:0 auto 42px;line-height:1.85}
.hero-sub b{color:var(--txt);font-weight:600}
.hero-cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn{
  padding:15px 34px;border-radius:100px;font-weight:700;font-size:15px;cursor:pointer;
  border:1px solid transparent;transition:.22s;display:inline-flex;align-items:center;gap:8px;
}
.btn-primary{background:linear-gradient(120deg,var(--gold-2),var(--gold));color:#1a1400;box-shadow:0 8px 26px rgba(224,179,76,.26)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(224,179,76,.36)}
.btn-ghost{border-color:var(--line-str);color:var(--txt);background:rgba(255,255,255,.03)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold)}
.btn-block{width:100%;justify-content:center}
.icon-btn{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:rgba(255,255,255,.05);
  color:var(--txt-2);cursor:pointer;font-size:16px;transition:.2s;display:grid;place-items:center;
}
.icon-btn:hover{color:var(--txt);border-color:var(--line-str)}

.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:72px;padding-top:40px;border-top:1px solid var(--line)}
.hero-stats div{display:flex;flex-direction:column;gap:6px}
.hero-stats b{font-size:32px;font-weight:800;color:var(--gold);letter-spacing:-.5px}
.hero-stats span{font-size:13px;color:var(--txt-3)}
.hero-scroll{text-align:center;color:var(--txt-3);font-size:13px;margin-top:50px;animation:bounce 2.2s infinite}
@keyframes bounce{0%,100%{transform:translateY(0);opacity:.5}50%{transform:translateY(9px);opacity:1}}

/* ---------- 品牌宣言 ---------- */
.manifesto-body p{font-size:17.5px;color:var(--txt-2);margin-bottom:22px;line-height:1.95}
.manifesto-body .lead{font-size:30px;color:var(--txt);font-weight:800;letter-spacing:-.5px;margin-bottom:26px}
.manifesto-body strong{color:var(--gold);font-weight:600}
.manifesto-body em{color:var(--txt);font-style:italic;border-bottom:1px dashed var(--gold)}
.creed-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:52px}
.creed{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;transition:.24s}
.creed:hover{border-color:var(--gold);transform:translateY(-4px)}
.creed-ico{width:44px;height:44px;border-radius:12px;background:var(--gold-dim);color:var(--gold);display:grid;place-items:center;font-size:19px;font-weight:700;margin-bottom:18px}
.creed h4{font-size:18px;margin-bottom:10px;font-weight:700}
.creed p{font-size:14.5px;color:var(--txt-2);line-height:1.8}

/* ---------- 视频卡 ---------- */
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.vcard{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  cursor:pointer;transition:.26s;position:relative;
}
.vcard:hover{transform:translateY(-6px);border-color:var(--gold);box-shadow:var(--shadow)}
.vthumb{aspect-ratio:16/9;position:relative;overflow:hidden;background:#000}
.vthumb img{width:100%;height:100%;object-fit:cover;transition:.5s}
.vcard:hover .vthumb img{transform:scale(1.06)}
.vthumb::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,.72),transparent 55%)}
.vplay{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);z-index:3;
  width:62px;height:62px;border-radius:50%;background:rgba(224,179,76,.94);color:#1a1400;
  display:grid;place-items:center;font-size:20px;padding-left:4px;transition:.26s;
  box-shadow:0 0 0 0 rgba(224,179,76,.5)
}
.vcard:hover .vplay{transform:translate(-50%,-50%) scale(1.09);box-shadow:0 0 0 13px rgba(224,179,76,.14)}
.vmeta{padding:20px 22px 24px}
.vmeta h4{font-size:17px;font-weight:700;margin-bottom:8px}
.vmeta p{font-size:14px;color:var(--txt-2);line-height:1.7}
.vprice{display:flex;align-items:baseline;gap:9px;margin-top:16px;padding-top:16px;border-top:1px solid var(--line)}
.vprice b{color:var(--gold);font-size:21px;font-weight:800}
.vprice s{color:var(--txt-3);font-size:14px}
.vprice i{margin-left:auto;font-style:normal;font-size:12px;color:var(--txt-3)}

/* ---------- 成果墙 ---------- */
.filters{display:flex;gap:10px;flex-wrap:wrap}
.filter{
  padding:9px 20px;border-radius:100px;border:1px solid var(--line);background:transparent;
  color:var(--txt-2);cursor:pointer;font-size:14px;transition:.2s;font-weight:500;
}
.filter:hover{border-color:var(--line-str);color:var(--txt)}
.filter.on{background:var(--gold);border-color:var(--gold);color:#1a1400;font-weight:700}
.gallery-grid{columns:3;column-gap:24px}
.gcard{
  break-inside:avoid;margin-bottom:24px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;cursor:zoom-in;transition:.24s;
}
.gcard:hover{border-color:var(--gold);transform:translateY(-4px)}
.gcard-img{width:100%;display:block;background:var(--bg-3)}
.gcard-info{padding:18px 20px 20px}
.gcard-info h4{font-size:16px;font-weight:700;margin-bottom:6px}
.gcard-info p{font-size:13.5px;color:var(--txt-2)}

/* ---------- 定价 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pcard{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 28px;display:flex;flex-direction:column;transition:.26s;position:relative;overflow:hidden;
}
.pcard.featured{border-color:var(--gold);background:linear-gradient(165deg,var(--card-hi),var(--card))}
.pcard.featured::before{content:'主推';position:absolute;top:18px;right:-30px;transform:rotate(38deg);background:var(--gold);color:#1a1400;font-size:11px;font-weight:800;padding:5px 36px}
.pcard:hover{transform:translateY(-5px);border-color:var(--gold)}
.pcat{font-size:12px;color:var(--gold);font-weight:700;letter-spacing:1.5px;margin-bottom:12px}
.pcard h3{font-size:22px;font-weight:800;margin-bottom:8px;line-height:1.35}
.psub{font-size:14px;color:var(--txt-3);margin-bottom:20px}
.psummary{font-size:14.5px;color:var(--txt-2);line-height:1.8;margin-bottom:22px;min-height:78px}
.pamount{display:flex;align-items:baseline;gap:10px;margin-bottom:6px}
.pamount b{font-size:36px;font-weight:900;color:var(--gold);letter-spacing:-1px}
.pamount s{color:var(--txt-3);font-size:15px}
.pnote{font-size:12.5px;color:var(--txt-3);margin-bottom:22px}
.pmetrics{display:flex;gap:18px;padding:14px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:22px;flex-wrap:wrap}
.pmetrics div{display:flex;flex-direction:column;gap:2px}
.pmetrics b{font-size:17px;font-weight:800;color:var(--txt)}
.pmetrics span{font-size:11.5px;color:var(--txt-3)}
.ptags{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:24px}
.ptags i{font-style:normal;font-size:11.5px;color:var(--txt-2);background:rgba(255,255,255,.06);padding:5px 11px;border-radius:6px}
.pcard .btn{margin-top:auto}
.price-footnote{margin-top:34px;font-size:13.5px;color:var(--txt-3);text-align:center;max-width:760px;margin-left:auto;margin-right:auto}

/* ---------- 担保 ---------- */
.escrow-flow{display:flex;align-items:stretch;gap:12px;margin-bottom:56px;flex-wrap:wrap}
.flow-step{flex:1;min-width:200px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;position:relative}
.flow-no{
  width:34px;height:34px;border-radius:10px;background:var(--gold);color:#1a1400;
  display:grid;place-items:center;font-weight:800;font-size:15px;margin-bottom:16px
}
.flow-step h4{font-size:17px;font-weight:700;margin-bottom:10px}
.flow-step p{font-size:14px;color:var(--txt-2);line-height:1.75}
.flow-step b{color:var(--gold)}
.flow-arrow{color:var(--gold);font-size:22px;align-self:center;flex-shrink:0}
.escrow-rules{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.rule-card{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-sm);padding:26px}
.rule-card h4{font-size:16px;font-weight:700;margin-bottom:10px;color:var(--gold)}
.rule-card p{font-size:14px;color:var(--txt-2);line-height:1.8}
.rule-card b{color:var(--txt)}

/* ---------- 订单查询 ---------- */
.track-box{display:flex;gap:12px;margin-top:28px}
.track-box input{
  flex:1;padding:16px 22px;background:var(--card);border:1px solid var(--line);
  border-radius:100px;color:var(--txt);font-size:15px;outline:none;transition:.2s
}
.track-box input:focus{border-color:var(--gold)}
.track-result{margin-top:28px}
.ocard{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px;margin-bottom:20px}
.ocard-head{display:flex;justify-content:space-between;align-items:center;gap:16px;padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:22px;flex-wrap:wrap}
.ocard-head h4{font-size:19px;font-weight:700}
.ono{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px;color:var(--txt-3);margin-top:5px}
.ostatus{padding:7px 18px;border-radius:100px;font-size:13px;font-weight:700}
.st-created,.st-closed{background:rgba(255,255,255,.08);color:var(--txt-2)}
.st-escrowed,.st-delivering{background:rgba(91,157,255,.16);color:var(--blue)}
.st-accepted{background:rgba(224,179,76,.16);color:var(--gold)}
.st-settled{background:rgba(49,196,141,.16);color:var(--green)}
.st-refunded{background:rgba(111,118,134,.16);color:var(--txt-3)}
.st-disputed{background:rgba(240,87,106,.16);color:var(--red)}
.timeline{position:relative;padding-left:30px;margin-bottom:26px}
.timeline::before{content:'';position:absolute;left:8px;top:8px;bottom:8px;width:2px;background:var(--line-str)}
.tl-item{position:relative;padding-bottom:20px}
.tl-item::before{
  content:'';position:absolute;left:-26px;top:7px;width:11px;height:11px;border-radius:50%;
  background:var(--gold);box-shadow:0 0 0 4px var(--bg-2)
}
.tl-item b{font-size:14.5px}
.tl-item p{font-size:13.5px;color:var(--txt-2)}
.tl-item time{display:block;font-size:12px;color:var(--txt-3);margin-top:2px}
.ledger{background:var(--bg-2);border-radius:var(--radius-sm);padding:20px;margin-top:8px}
.ledger h5{font-size:14px;color:var(--txt-3);font-weight:600;margin-bottom:14px;letter-spacing:1px}
.lrow{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px dashed var(--line);font-size:14px}
.lrow:last-child{border:0}
.lrow b{font-family:ui-monospace,Menlo,monospace}
.lrow .l-in b{color:var(--green)}
.lrow .l-out b{color:var(--red)}
.lrow .l-fee b,.lrow .l-refund b{color:var(--gold)}
.order-actions{display:flex;gap:12px;margin-top:22px;flex-wrap:wrap}

/* ---------- FAQ ---------- */
.faq-list{margin-top:36px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;padding:24px 0;background:none;border:0;color:var(--txt);font-size:17px;font-weight:600;cursor:pointer;text-align:left;display:flex;justify-content:space-between;gap:20px;align-items:center;transition:.2s}
.faq-q:hover{color:var(--gold)}
.faq-q i{font-style:normal;color:var(--gold);font-size:22px;flex-shrink:0;transition:transform .26s}
.faq-item.open .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;color:var(--txt-2);font-size:15px;line-height:1.85}
.faq-item.open .faq-a{max-height:340px;padding-bottom:24px}

/* ---------- 页脚 ---------- */
.footer{border-top:1px solid var(--line);padding:64px 0 32px;background:var(--bg-2)}
.footer-top{display:flex;justify-content:space-between;gap:44px;flex-wrap:wrap;padding-bottom:40px;border-bottom:1px solid var(--line)}
.footer-brand{display:flex;gap:16px;align-items:flex-start}
.brand-mark{
  width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--gold-2),var(--gold));
  color:#1a1400;display:grid;place-items:center;font-size:22px;font-weight:900;flex-shrink:0
}
.footer-brand b{font-size:18px;display:block;margin-bottom:4px}
.footer-brand p{font-size:14px;color:var(--txt-3)}
.footer-cols{display:flex;gap:56px;flex-wrap:wrap}
.footer-cols h5{font-size:14px;font-weight:700;margin-bottom:14px}
.footer-cols a{display:block;font-size:14px;color:var(--txt-3);margin-bottom:9px;transition:.2s}
.footer-cols a:hover{color:var(--gold)}
.footer-bottom{padding-top:28px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.footer-bottom p{font-size:13px;color:var(--txt-3)}
.disclaimer{opacity:.7}

/* ---------- 抽屉 / 弹层 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.66);backdrop-filter:blur(5px);opacity:0;pointer-events:none;transition:.3s;z-index:80}
.drawer-mask.on{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:420px;max-width:92vw;background:var(--bg-2);
  border-left:1px solid var(--line);z-index:90;display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .32s cubic-bezier(.4,0,.2,1)
}
.drawer.on{transform:translateX(0)}
.drawer-head{padding:24px 26px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}
.drawer-head h3{font-size:19px;font-weight:700}
.drawer-body{flex:1;overflow-y:auto;padding:20px 26px}
.drawer-foot{padding:24px 26px;border-top:1px solid var(--line);background:var(--bg-3)}
.citem{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.citem-img{width:76px;height:76px;border-radius:var(--radius-sm);overflow:hidden;background:var(--bg-3);flex-shrink:0}
.citem-img img{width:100%;height:100%;object-fit:cover}
.citem-info{flex:1;min-width:0}
.citem-info b{font-size:15px;display:block;margin-bottom:5px}
.citem-info p{font-size:12.5px;color:var(--txt-3)}
.citem-right{text-align:right;flex-shrink:0}
.citem-right b{color:var(--gold);font-size:16px}
.citem-del{background:none;border:0;color:var(--txt-3);cursor:pointer;font-size:12px;margin-top:8px;transition:.2s}
.citem-del:hover{color:var(--red)}
.cart-total{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:8px}
.cart-total span{font-size:14px;color:var(--txt-2)}
.cart-total b{font-size:28px;font-weight:900;color:var(--gold)}
.cart-hint{font-size:12px;color:var(--txt-3);margin-bottom:18px;line-height:1.6}
.cart-empty{text-align:center;padding:70px 20px;color:var(--txt-3);font-size:14px}
.cart-empty div{font-size:40px;margin-bottom:14px;opacity:.4}

.modal{position:fixed;inset:0;background:rgba(0,0,0,.72);backdrop-filter:blur(7px);z-index:100;display:grid;place-items:center;padding:24px;opacity:0;pointer-events:none;transition:.26s;overflow-y:auto}
.modal.on{opacity:1;pointer-events:auto}
.modal-card{background:var(--bg-2);border:1px solid var(--line);border-radius:20px;padding:36px;width:100%;max-width:520px;position:relative;box-shadow:var(--shadow);margin:auto}
.modal-close{position:absolute;top:18px;right:18px}
.modal-title{font-size:23px;font-weight:800;margin-bottom:26px}
.form-row{margin-bottom:20px}
.form-row label{display:block;font-size:13.5px;color:var(--txt-2);margin-bottom:9px;font-weight:500}
.form-row label em{font-style:normal;color:var(--txt-3);font-size:12px;margin-left:6px}
.form-row input,.form-row textarea{
  width:100%;padding:13px 16px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-sm);color:var(--txt);outline:none;transition:.2s;resize:vertical
}
.form-row input:focus,.form-row textarea:focus{border-color:var(--gold);background:var(--card-hi)}
.pay-choose{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.pay-opt{position:relative;cursor:pointer}
.pay-opt input{position:absolute;opacity:0}
.pay-opt span{
  display:flex;flex-direction:column;gap:2px;padding:13px 10px;border:1px solid var(--line);
  border-radius:var(--radius-sm);text-align:center;font-size:14px;font-weight:600;transition:.2s
}
.pay-opt span em{font-style:normal;font-size:10.5px;color:var(--txt-3);font-weight:400}
.pay-opt input:checked+span{border-color:var(--gold);background:var(--gold-dim);color:var(--gold)}
.checkout-summary{background:var(--card);border-radius:var(--radius-sm);padding:20px;margin-bottom:22px}
.checkout-summary div{display:flex;justify-content:space-between;padding:7px 0;font-size:14px;color:var(--txt-2)}
.checkout-summary b{font-family:ui-monospace,Menlo,monospace;color:var(--txt)}
.checkout-summary .total{border-top:1px solid var(--line);margin-top:10px;padding-top:14px;font-size:16px;color:var(--txt);font-weight:600}
.checkout-summary .total b{font-size:22px;color:var(--gold);font-weight:800}
.form-tip{font-size:12px;color:var(--txt-3);text-align:center;margin-top:14px}
.form-tip a{color:var(--gold);text-decoration:underline}

/* ---------- 灯箱 / 视频层 ---------- */
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.94);z-index:120;display:none;place-items:center;padding:40px}
.lightbox.on{display:grid}
.lb-figure{max-width:1100px;width:100%;text-align:center}
.lb-figure img{max-width:100%;max-height:78vh;margin:0 auto;border-radius:var(--radius-sm);box-shadow:var(--shadow)}
.lb-figure figcaption{margin-top:20px}
.lb-figure b{display:block;font-size:18px;margin-bottom:6px}
.lb-figure span{font-size:14px;color:var(--txt-3)}
.lb-nav,.lb-close{position:absolute;z-index:2}
.lb-close{top:24px;right:28px;width:44px;height:44px;font-size:19px}
.lb-nav{top:50%;transform:translateY(-50%);width:52px;height:52px;border-radius:50%;background:rgba(255,255,255,.1);border:1px solid var(--line-str);color:var(--txt);font-size:28px;cursor:pointer;transition:.2s;display:grid;place-items:center}
.lb-nav:hover{background:var(--gold);color:#1a1400;border-color:var(--gold)}
.lb-prev{left:26px}.lb-next{right:26px}
.video-modal{position:fixed;inset:0;background:rgba(0,0,0,.94);z-index:130;display:none;place-items:center;padding:40px}
.video-modal.on{display:grid}
.vm-inner{width:100%;max-width:1000px}
.vm-inner video{width:100%;max-height:76vh;border-radius:var(--radius-sm);background:#000;box-shadow:var(--shadow)}
.vm-info{margin-top:22px}
.vm-info b{font-size:19px;display:block;margin-bottom:7px}
.vm-info p{font-size:14.5px;color:var(--txt-2)}
.vm-close{position:absolute;top:24px;right:28px;width:44px;height:44px;font-size:19px}

/* ---------- 杂项 ---------- */
.toast{
  position:fixed;bottom:34px;left:50%;transform:translate(-50%,24px);background:var(--card-hi);
  border:1px solid var(--line-str);color:var(--txt);padding:14px 26px;border-radius:100px;
  font-size:14.5px;z-index:200;opacity:0;pointer-events:none;transition:.28s;box-shadow:var(--shadow);max-width:88vw;text-align:center
}
.toast.on{opacity:1;transform:translate(-50%,0)}
.skeleton-card{aspect-ratio:4/3;border-radius:var(--radius);background:linear-gradient(100deg,var(--card) 30%,var(--card-hi) 50%,var(--card) 70%);background-size:200% 100%;animation:shimmer 1.4s infinite}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}
.fade-in{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.fade-in.in{opacity:1;transform:translateY(0)}

/* ---------- 导航 ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:70;transition:.3s;backdrop-filter:blur(0)}
.nav.stuck{background:rgba(10,11,14,.82);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:var(--max);margin:0 auto;padding:20px 28px;display:flex;align-items:center;gap:30px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:36px;height:36px;border-radius:10px;font-size:19px}
.brand-text{font-size:17px;font-weight:800;display:flex;align-items:baseline;gap:8px}
.brand-text em{font-style:normal;font-size:10.5px;color:var(--txt-3);letter-spacing:2px;font-weight:600}
.nav-links{display:flex;gap:28px;margin-left:auto}
.nav-links a{font-size:14.5px;color:var(--txt-2);transition:.2s}
.nav-links a:hover{color:var(--gold)}
.nav-actions{margin-left:14px}
.cart-btn{
  padding:10px 20px;border-radius:100px;border:1px solid var(--line-str);background:rgba(255,255,255,.04);
  color:var(--txt);cursor:pointer;font-size:14px;font-weight:600;transition:.2s;position:relative
}
.cart-btn:hover{border-color:var(--gold);color:var(--gold)}
.cart-badge{
  display:inline-grid;place-items:center;min-width:20px;height:20px;padding:0 6px;border-radius:100px;
  background:var(--gold);color:#1a1400;font-size:11.5px;font-weight:800;margin-left:5px
}

/* ---------- 响应式 ---------- */
@media(max-width:1024px){
  .hero-title{font-size:58px}
  .section{padding:80px 0}
  .price-grid,.video-grid{grid-template-columns:repeat(2,1fr)}
  .gallery-grid{columns:2}
  .section-title{font-size:34px}
}
@media(max-width:720px){
  .hero-title{font-size:40px;letter-spacing:-1px}
  .hero-sub{font-size:16px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:24px}
  .hero-stats b{font-size:26px}
  .section{padding:64px 0}
  .container{padding:0 20px}
  .section-title{font-size:27px}
  .manifesto-body .lead{font-size:23px}
  .price-grid,.video-grid,.creed-grid,.escrow-rules{grid-template-columns:1fr}
  .gallery-grid{columns:1}
  .flow-arrow{display:none}
  .nav-links{display:none}
  .pay-choose{grid-template-columns:1fr}
  .track-box{flex-direction:column}
  .track-box input{border-radius:var(--radius-sm)}
  .lb-nav{width:42px;height:42px;font-size:22px}
  .lb-prev{left:10px}.lb-next{right:10px}
  .psummary{min-height:0}
  .modal-card{padding:26px}
}