/* ===== 奢店通 · 宣传页样式 ===== */
:root{
  --ink:#0e0f12;
  --ink-2:#15171c;
  --ink-3:#1c1f26;
  --ink-line:rgba(255,255,255,.09);
  --cream:#f7f3ec;
  --cream-2:#fffdf9;
  --line:#e8e1d5;
  --gold:#c2974f;
  --gold-2:#e4c485;
  --gold-soft:rgba(194,151,79,.12);
  --text:#1b1c20;
  --muted:#6e6c74;
  --muted-2:#9a98a0;
  --radius:18px;
  --shadow:0 18px 50px -22px rgba(20,18,14,.45);
  --maxw:1200px;
  --serif:"Noto Serif SC","Source Han Serif SC",serif;
  --sans:"Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);
  color:var(--text);
  background:var(--cream);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:24px}
.section{padding-block:clamp(64px,9vw,116px)}

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

/* reveal (no-JS keeps visible) */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.2,1)}
.js .reveal.is-in{opacity:1;transform:none}

/* ===== buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:999px;font-weight:500;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;transition:all .25s ease;white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--gold),var(--gold-2));color:#1b150a;box-shadow:0 10px 26px -12px rgba(194,151,79,.7)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px -12px rgba(194,151,79,.85)}
.btn-ghost{border-color:var(--ink-line);color:#f4efe6;background:rgba(255,255,255,.03)}
.btn-ghost:hover{background:rgba(255,255,255,.09);border-color:var(--gold)}
.section .btn-ghost{border-color:var(--line);color:var(--text);background:#fff}
.section .btn-ghost:hover{border-color:var(--gold);color:var(--gold)}
.btn-lg{padding:15px 28px;font-size:1.02rem}

/* ===== header (persistent bar) ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(14,15,18,.6);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--ink-line);
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{background:rgba(14,15,18,.9);box-shadow:0 8px 28px -18px rgba(0,0,0,.7)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:#f4efe6}
.brand-mark{
  display:grid;place-items:center;width:34px;height:34px;border-radius:9px;
  background:linear-gradient(135deg,var(--gold),var(--gold-2));color:#1b150a;
  font-family:var(--serif);font-weight:700;font-size:1.05rem;
}
.brand-name{font-family:var(--serif);font-weight:700;font-size:1.22rem;letter-spacing:.06em}
.nav-menu{display:flex;align-items:center;gap:28px}
.nav-menu>a{color:rgba(244,239,230,.78);font-size:.95rem;transition:color .2s}
.nav-menu>a:hover{color:#fff}
.nav-menu .nav-cta{padding:9px 18px;margin-left:4px}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:#f4efe6;border-radius:2px;transition:transform .3s ease,opacity .2s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== hero ===== */
.hero{position:relative;background:var(--ink);color:#f4efe6;overflow:hidden;padding-block:clamp(80px,12vw,140px)}
.hero-bg{position:absolute;inset:0;background:
  radial-gradient(60% 50% at 78% 12%,rgba(194,151,79,.20),transparent 60%),
  radial-gradient(45% 45% at 10% 90%,rgba(194,151,79,.12),transparent 60%)}
.hero-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.eyebrow{display:inline-block;font-size:.82rem;letter-spacing:.14em;color:var(--gold-2);
  border:1px solid var(--ink-line);padding:6px 14px;border-radius:999px;margin-bottom:22px;background:rgba(255,255,255,.02)}
.hero h1{font-family:var(--serif);font-weight:900;font-size:clamp(2.1rem,5.2vw,3.6rem);line-height:1.18;letter-spacing:.01em}
.hero h1 .accent{background:linear-gradient(120deg,var(--gold),var(--gold-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{margin-top:22px;font-size:1.08rem;color:rgba(244,239,230,.74);max-width:40ch}
.hero-cta{margin-top:32px;display:flex;gap:14px;flex-wrap:wrap}
.hero-tags{margin-top:34px;display:flex;gap:10px 20px;flex-wrap:wrap}
.hero-tags li{position:relative;padding-left:16px;color:rgba(244,239,230,.62);font-size:.9rem}
.hero-tags li::before{content:"";position:absolute;left:0;top:50%;width:7px;height:7px;border-radius:50%;background:var(--gold);transform:translateY(-50%)}

/* dashboard mockup */
.mock{background:linear-gradient(160deg,var(--ink-2),var(--ink-3));border:1px solid var(--ink-line);border-radius:16px;box-shadow:var(--shadow);overflow:hidden}
.mock-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--ink-line);background:rgba(0,0,0,.2)}
.dot{width:10px;height:10px;border-radius:50%}
.d1{background:#e0655a}.d2{background:#e3b341}.d3{background:#62c462}
.mock-url{margin-left:10px;font-size:.74rem;color:var(--muted-2);background:rgba(255,255,255,.04);padding:4px 12px;border-radius:6px}
.mock-body{display:grid;grid-template-columns:120px 1fr;min-height:340px}
.mock-side{display:flex;flex-direction:column;gap:6px;padding:16px 10px;border-right:1px solid var(--ink-line);background:rgba(0,0,0,.16)}
.mock-side-item{font-size:.8rem;color:var(--muted-2);padding:7px 10px;border-radius:8px}
.mock-side-item.active{color:#fff;background:var(--gold-soft)}
.mock-main{padding:16px;display:flex;flex-direction:column;gap:14px}
.mock-stats{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mock-stat{background:rgba(255,255,255,.03);border:1px solid var(--ink-line);border-radius:10px;padding:10px 12px;display:flex;flex-direction:column;gap:4px}
.mock-stat .k{font-size:.72rem;color:var(--muted-2)}
.mock-stat .v{font-size:1.15rem;font-weight:700;color:#f4efe6}
.mock-panels{display:grid;grid-template-columns:1.4fr 1fr;gap:12px}
.mock-title{font-size:.74rem;color:var(--muted-2);margin-bottom:10px;display:block}
.mock-chart{background:rgba(255,255,255,.03);border:1px solid var(--ink-line);border-radius:10px;padding:12px}
.bars{display:flex;align-items:flex-end;gap:7px;height:84px}
.bars span{flex:1;border-radius:5px 5px 1px 1px;background:linear-gradient(180deg,var(--gold-2),var(--gold));opacity:.85}
.mock-donut{background:rgba(255,255,255,.03);border:1px solid var(--ink-line);border-radius:10px;padding:12px;display:flex;flex-direction:column}
.donut{margin:auto;width:74px;height:74px;border-radius:50%;
  background:conic-gradient(var(--gold) 0 38%,var(--gold-2) 38% 62%,rgba(255,255,255,.18) 62% 82%,rgba(255,255,255,.08) 82% 100%);
  -webkit-mask:radial-gradient(circle,transparent 60%,#000 61%);mask:radial-gradient(circle,transparent 60%,#000 61%)}
.mock-list{background:rgba(255,255,255,.03);border:1px solid var(--ink-line);border-radius:10px;padding:12px;display:flex;flex-direction:column;gap:8px}
.mock-row{display:flex;justify-content:space-between;align-items:center;font-size:.78rem}
.mock-row i{color:rgba(244,239,230,.78);font-style:normal}
.mock-row b{font-weight:500;font-size:.7rem;padding:2px 8px;border-radius:6px}
.mock-row:nth-of-type(1) b{background:rgba(224,101,90,.18);color:#e8958e}
.mock-row:nth-of-type(2) b{background:rgba(98,196,98,.18);color:#9ad99a}
.mock-row:nth-of-type(3) b{background:rgba(224,101,90,.18);color:#e8958e}

/* ===== brands marquee ===== */
.brands{background:var(--cream-2);padding-block:46px 56px;border-block:1px solid var(--line);}
.brands .section-kicker{margin-bottom:8px}
.brands-title{font-family:var(--serif);font-weight:700;font-size:clamp(1.25rem,2.6vw,1.6rem);text-align:center}
.marquee{margin-top:28px;overflow:hidden;position:relative;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marquee-track{display:flex;gap:48px;width:max-content;animation:marquee 32s linear infinite}
.marquee-track span{font-family:var(--serif);font-weight:700;font-size:1.4rem;color:#c9bca5;white-space:nowrap}
.marquee:hover .marquee-track{animation-play-state:paused}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ===== section heads ===== */
.section-kicker{color:var(--gold);font-size:.82rem;letter-spacing:.14em;text-transform:uppercase;font-weight:500;margin-bottom:12px}
.section-title{font-family:var(--serif);font-weight:700;font-size:clamp(1.7rem,3.8vw,2.5rem);line-height:1.22}
.section-head{max-width:760px;margin-bottom:54px}
.section-head .section-sub{margin-top:16px;color:var(--muted);font-size:1.04rem}
.section-sub{color:var(--muted)}

/* ===== features ===== */
.features{background:var(--cream)}
.grid{display:grid;gap:22px}
.grid-features{grid-template-columns:repeat(4,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--cream-2);border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--gold-soft)}
.icon{display:grid;place-items:center;width:50px;height:50px;border-radius:13px;background:var(--gold-soft);color:var(--gold);margin-bottom:18px}
.icon svg{width:26px;height:26px}
.card h3{font-family:var(--serif);font-weight:700;font-size:1.16rem;margin-bottom:10px}
.card p{color:var(--muted);font-size:.96rem}

/* ===== scenarios ===== */
.scenarios{background:var(--cream-2)}
.grid-2{grid-template-columns:1fr 1fr}
.scenario{background:linear-gradient(160deg,#fff,var(--cream));border:1px solid var(--line);border-radius:var(--radius);padding:32px 30px}
.scenario h3{font-family:var(--serif);font-weight:700;font-size:1.32rem;margin-bottom:12px;display:flex;align-items:center;gap:12px}
.scenario h3::before{content:"";width:8px;height:22px;border-radius:4px;background:linear-gradient(180deg,var(--gold),var(--gold-2))}
.scenario p{color:var(--muted)}

/* ===== unified platform ===== */
.platform{background:var(--ink);color:#f4efe6}
.platform .section-kicker{color:var(--gold-2)}
.platform .section-sub{color:rgba(244,239,230,.7)}
.platform-inner{display:grid;grid-template-columns:1fr .9fr;gap:56px;align-items:center}
.ticks{margin:28px 0 32px;display:flex;flex-direction:column;gap:14px}
.ticks li{position:relative;padding-left:32px;color:rgba(244,239,230,.86)}
.ticks li::before{content:"";position:absolute;left:0;top:3px;width:20px;height:20px;border-radius:50%;background:var(--gold-soft);box-shadow:inset 0 0 0 1px var(--gold)}
.ticks li::after{content:"";position:absolute;left:6px;top:9px;width:8px;height:4px;border-left:2px solid var(--gold);border-bottom:2px solid var(--gold);transform:rotate(-45deg)}
.platform .btn-primary{margin-top:6px}

/* devices mockup (phone + pc tag) */
.devices{position:relative;display:flex;justify-content:center;align-items:center;min-height:360px}
.dev-pc-tag{position:absolute;top:6px;left:6%;background:rgba(255,255,255,.04);border:1px solid var(--ink-line);border-radius:12px;padding:12px 16px;font-size:.78rem;color:var(--gold-2);z-index:1;letter-spacing:.04em}
.dev-phone{position:relative;z-index:2;width:216px;background:linear-gradient(160deg,#1c1f26,#15171c);border:1px solid var(--ink-line);border-radius:30px;padding:16px 12px;box-shadow:var(--shadow)}
.dev-phone .notch{width:64px;height:7px;border-radius:4px;background:rgba(255,255,255,.14);margin:0 auto 16px}
.p-screen{display:flex;flex-direction:column;gap:12px}
.p-card{background:rgba(255,255,255,.04);border:1px solid var(--ink-line);border-radius:14px;padding:14px}
.p-card b{display:block;font-size:.66rem;color:var(--muted-2);margin-bottom:10px;letter-spacing:.05em}
.p-stat{display:flex;align-items:baseline;gap:8px;margin-bottom:12px}
.p-stat span{font-size:1.5rem;font-weight:700;color:#f4efe6}
.p-stat i{font-style:normal;font-size:.66rem;color:var(--muted-2)}
.p-mini{height:7px;border-radius:4px;background:rgba(255,255,255,.08);margin-bottom:6px}
.p-mini.gold{background:linear-gradient(90deg,var(--gold),var(--gold-2));width:62%}
.p-list{display:flex;flex-direction:column;gap:9px}
.p-row{display:flex;align-items:center;gap:9px;font-size:.7rem;color:rgba(244,239,230,.82)}
.p-row i{width:24px;height:24px;border-radius:8px;background:var(--gold-soft);flex:0 0 auto}
.p-cta{text-align:center;background:linear-gradient(135deg,var(--gold),var(--gold-2));color:#1b150a;font-weight:600;font-size:.78rem;padding:10px;border-radius:12px}

/* ===== steps ===== */
.steps{background:var(--cream)}
.steps-list{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.steps-list li{background:var(--cream-2);border:1px solid var(--line);border-radius:var(--radius);padding:32px 28px}
.step-no{font-family:var(--serif);font-size:1.6rem;font-weight:700;color:var(--gold);opacity:.5}
.steps-list h3{font-family:var(--serif);font-weight:700;font-size:1.2rem;margin:14px 0 8px}
.steps-list p{color:var(--muted);font-size:.96rem}

/* ===== AI roadmap ===== */
.ai{background:var(--cream-2)}
.ai-grid{max-width:920px;margin-inline:auto}
.ai-card{position:relative}
.badge{position:absolute;top:16px;right:16px;font-size:.68rem;color:var(--gold);border:1px solid var(--gold);background:var(--gold-soft);padding:3px 10px;border-radius:999px;letter-spacing:.04em;font-weight:500}
.ai-card .icon{margin-bottom:14px}

/* ===== CTA ===== */
.cta{background:linear-gradient(150deg,var(--ink),#1a1410);color:#f4efe6;text-align:center;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(50% 60% at 50% 0,rgba(194,151,79,.22),transparent 70%)}
.cta-inner{position:relative}
.cta .section-title{margin-bottom:14px}
.cta .section-sub{color:rgba(244,239,230,.74);margin-bottom:34px}
.cta-actions{display:flex;align-items:center;justify-content:center;gap:36px;flex-wrap:wrap}
.wechat{display:flex;align-items:center;gap:14px;color:rgba(244,239,230,.78);text-align:left;font-size:.92rem}
.wechat small{color:var(--muted-2);font-size:.78rem}
.qr{width:84px;height:84px;border-radius:12px;background:
  linear-gradient(45deg,transparent 45%,var(--gold-2) 45% 55%,transparent 55%) 0 0/16px 16px,
  linear-gradient(45deg,transparent 45%,#fff 45% 55%,transparent 55%) 8px 8px/16px 16px,
  #fff;border:1px solid var(--ink-line)}

/* ===== FAQ ===== */
.faq{background:var(--cream)}
.faq-list{max-width:820px;margin-inline:auto;display:flex;flex-direction:column;gap:14px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:0;transition:border-color .2s}
.faq details[open]{border-color:var(--gold-soft);box-shadow:0 10px 30px -22px rgba(194,151,79,.5)}
.faq summary{list-style:none;cursor:pointer;padding:22px 24px;font-family:var(--serif);font-weight:700;font-size:1.06rem;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.4rem;color:var(--gold);transition:transform .2s;font-weight:400}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 24px 22px;color:var(--muted)}

/* ===== footer ===== */
.site-footer{background:var(--ink);color:rgba(244,239,230,.7);padding-top:54px}
.footer-inner{display:grid;grid-template-columns:1fr 2fr;gap:40px;padding-bottom:36px;border-bottom:1px solid var(--ink-line)}
.footer-brand{display:flex;align-items:center;gap:14px}
.footer-brand strong{font-family:var(--serif);font-size:1.15rem;color:#fff}
.footer-brand p{font-size:.85rem;color:var(--muted-2)}
.footer-brand .brand-mark{width:42px;height:42px;font-size:1.2rem}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.footer-cols h4{font-size:.82rem;letter-spacing:.1em;color:var(--gold-2);margin-bottom:14px;font-weight:500}
.footer-cols a{display:block;font-size:.9rem;padding:5px 0;color:rgba(244,239,230,.66);transition:color .2s}
.footer-cols a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding:22px 24px;font-size:.82rem;color:var(--muted-2)}
.footer-note{max-width:60%}

/* ===== responsive ===== */
@media (max-width:980px){
  .hero-inner{grid-template-columns:1fr;gap:44px}
  .mock{max-width:520px}
  .platform-inner{grid-template-columns:1fr;gap:40px}
  .grid-features{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .steps-list{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr;gap:28px}
}
@media (max-width:720px){
  .nav-menu{position:fixed;inset:68px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;
    background:var(--ink);padding:14px 24px 24px;border-bottom:1px solid var(--ink-line);
    transform:translateY(-130%);transition:transform .35s ease;box-shadow:0 20px 40px -20px rgba(0,0,0,.6)}
  .nav-menu.open{transform:none}
  .nav-menu>a{padding:14px 0;border-bottom:1px solid var(--ink-line)}
  .nav-menu .nav-cta{margin:14px 0 0;border:0;text-align:center}
  .nav-toggle{display:flex}
  .grid-features,.grid-2,.grid-3{grid-template-columns:1fr}
  .mock-body{grid-template-columns:96px 1fr}
  .cta-actions{flex-direction:column;gap:24px}
  .footer-cols{grid-template-columns:repeat(2,1fr)}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .footer-note{max-width:100%}
}
@media (max-width:420px){
  .mock-panels{grid-template-columns:1fr}
  .mock-stats{grid-template-columns:1fr}
}

/* reduced motion */
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;scroll-behavior:auto!important}
  .js .reveal{opacity:1;transform:none;transition:none}
  .marquee-track{animation:none}
}