/* =====================================================
   D.F.S Eastops — Design Tokens + Component Styles v1
   风格：Apple 官网亮色极简 · 晨雾渐变墙 A·4 (用户 08-28)
   字体：系统原生栈 F·3 (-apple-system → Segoe UI Variable → Inter)
   类名契约卡：worker 只能用本文件出现的类名
   ===================================================== */
:root{
  --paper:#FFFFFF;--paper-soft:#F5F5F7;--ink:#1D1D1F;--ink-soft:#6E6E73;
  --blue:#0071E3;--blue-deep:#0066CC;--hairline:#E4E4E8;
  --grad-wall:linear-gradient(135deg,#EDE9F9 0%,#E9F0FF 45%,#F9EAF3 100%);
  --grad-flat:linear-gradient(180deg,#F9F9FB 0%,#F5F5F7 55%,#EDEDF0 100%);
  --font-display:-apple-system,BlinkMacSystemFont,"Segoe UI Variable","Segoe UI",Inter,system-ui,sans-serif;
  --font-body:-apple-system,BlinkMacSystemFont,"Segoe UI Variable","Segoe UI",Inter,system-ui,sans-serif;
  --font-data:"SF Mono",ui-monospace,"Cascadia Code",Menlo,Consolas,monospace;
  --fs-h1:clamp(40px,5.2vw,64px);--fs-h2:clamp(28px,3.4vw,44px);--fs-h3:clamp(19px,2vw,24px);
  --fs-body:16px;--fs-small:14px;--fs-label:14px;
  --radius-btn:999px;--radius-card:14px;--radius-img:14px;
  --space-1:8px;--space-2:16px;--space-3:24px;--space-4:40px;--space-5:64px;--space-6:96px;
  --sec-gap:96px;--container:1140px;
  --shadow-card:0 1px 2px rgba(0,0,0,.05),0 8px 26px rgba(0,0,0,.09);
  --shadow-float:0 18px 50px rgba(0,0,0,.12);
  --transition:.28s cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);font-size:var(--fs-body);color:var(--ink);background:var(--paper);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto}
a{color:var(--blue-deep);text-decoration:none}
a:hover{color:var(--blue)}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:4px}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:550;letter-spacing:-.02em;line-height:1.12}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.container-narrow{max-width:820px}
.h2{font-size:var(--fs-h2);margin-bottom:24px;text-align:center}
.eyebrow{font-family:var(--font-data);font-size:var(--fs-label);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft);margin-bottom:var(--space-2);font-weight:500;text-align:center}
.section{padding:var(--sec-gap) 0}
.section-soft{background:var(--paper-soft)}
.section-intro{max-width:620px;color:var(--ink-soft);margin:16px auto 32px;font-size:var(--fs-body);text-align:center}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:6px;font-size:var(--fs-body);font-weight:500;border-radius:var(--radius-btn);padding:11px 26px;cursor:pointer;transition:all var(--transition)}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-deep);color:#fff}
.btn-link{background:transparent;color:var(--blue);padding:11px 2px}
.btn-link:hover{color:var(--blue-deep)}
.btn-plain{background:var(--ink);color:#fff}
.btn-plain:hover{background:#000;color:#fff}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid transparent;transition:border-color var(--transition)}
.site-header.scrolled{border-bottom-color:var(--hairline)}
.header-inner{max-width:var(--container);margin:0 auto;padding:0 24px;height:64px;display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;flex:none;min-height:40px}
.brand-logo{height:30px;width:auto;display:block}
.main-nav{display:flex;align-items:center;justify-content:center;gap:10px;flex:1}
.nav-item{position:relative}
.nav-link{display:inline-flex;align-items:center;gap:4px;padding:10px 18px;font-size:14px;color:var(--ink);border-radius:8px;min-height:40px}
.nav-link:hover{background:rgba(0,0,0,.04);color:var(--ink)}
.nav-item .chev{transition:transform var(--transition)}
.nav-item.open .chev{transform:rotate(180deg)}
.nav-menu{position:absolute;top:100%;left:0;min-width:230px;background:#fff;border-radius:var(--radius-card);box-shadow:var(--shadow-float);padding:8px;list-style:none;opacity:0;visibility:hidden;transform:translateY(6px);transition:all var(--transition)}
.nav-item.open .nav-menu{opacity:1;visibility:visible;transform:translateY(0)}
.nav-menu a{display:flex;align-items:center;min-height:40px;padding:9px 14px;font-size:14px;color:var(--ink);border-radius:8px}
.nav-menu a:hover{background:var(--paper-soft);color:var(--ink)}
.header-cta{flex:none;padding:10px 26px;font-size:14px;min-height:40px;display:inline-flex;align-items:center}
.menu-btn{display:none;background:none;border:0;color:var(--ink);padding:10px;margin-left:auto;cursor:pointer;min-width:44px;min-height:44px}
.mobile-nav{display:none;position:fixed;top:58px;left:0;right:0;bottom:0;background:#fff;z-index:59;padding:18px 24px;overflow-y:auto;flex-direction:column}
.mobile-nav.open{display:flex}
.mobile-nav a{padding:12px 4px;font-size:16px;color:var(--ink);border-bottom:1px solid var(--paper-soft)}
.mobile-nav a:last-child{margin-top:12px;background:var(--blue);color:#fff;border-radius:var(--radius-btn);border:0;text-align:center;margin-bottom:30px}

/* ---------- Hero (P1c gradient wall) ---------- */
.hero-wall{background:var(--grad-wall);padding:88px 0 72px;text-align:center}
/* Hero band：全幅图背景 + 顶部白纱渐变 + 文字叠上部（v6） */
.hero-band{position:relative;overflow:hidden;text-align:center}
.hero-band .hb-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.hero-band .hb-veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(253,251,248,.97) 0%,rgba(253,251,248,.90) 18%,rgba(253,251,248,.58) 38%,rgba(253,251,248,.14) 60%,rgba(253,251,248,0) 76%)}
.hero-band .hb-content{position:relative;z-index:1;padding:116px 0 545px}
.hero-band h1{font-size:var(--fs-h1);font-weight:600;letter-spacing:-.03em;line-height:1.05}
.hero-band .hero-actions{display:flex;gap:14px;justify-content:center;align-items:center;margin-top:30px;flex-wrap:wrap}
.hero-copy h1{font-size:var(--fs-h1);font-weight:600;letter-spacing:-.03em;line-height:1.05}
.hero-sub strong{color:var(--ink);font-weight:600}
.hero-sub{color:var(--ink-soft);max-width:640px;margin:18px auto 0;font-size:18px}
.hero-actions{display:flex;gap:14px;justify-content:center;align-items:center;margin-top:30px;flex-wrap:wrap}
.hero-media{margin-top:56px}
.hero-media img{width:100%;border-radius:var(--radius-img);box-shadow:var(--shadow-float);aspect-ratio:3/2;object-fit:cover}

/* ---------- Logo wall ---------- */
.logo-wall{display:flex;flex-wrap:wrap;gap:34px 42px;justify-content:center;padding:14px 0;opacity:.9}
.wall-logo{height:34px;width:auto;max-width:160px;object-fit:contain}

/* ---------- Grids & Cards ---------- */
.grid{display:grid;gap:var(--space-4)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{display:flex;flex-direction:column;background:#fff;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);transition:all var(--transition);color:var(--ink);min-width:0}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-float);color:var(--ink)}
.card-img{padding:14px}
.card-img img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:10px;display:block}
.card-img-cta{background:var(--grad-wall);display:flex;align-items:center;justify-content:center;aspect-ratio:1/1;border-radius:10px;margin:14px;padding:0}
.cta-orb{width:56px;height:56px;border-radius:50%;background:var(--blue);color:#fff;font-size:26px;font-weight:600;display:flex;align-items:center;justify-content:center}
.card-body{padding:6px 20px 22px}
.card-body h3,.card-body h2{font-size:var(--fs-h3);margin-bottom:6px}
.card-body p{font-size:14.5px;color:var(--ink-soft)}
.card-more{display:flex;align-items:center;min-height:40px;margin-top:2px;color:var(--blue);font-weight:500}
.card-plain{padding:26px 26px 22px}
.card-plain h3{font-size:var(--fs-h3);margin-bottom:8px}
.card-plain p{font-size:14.5px;color:var(--ink-soft)}

/* ---------- Stats band ---------- */
.stats-band{background:var(--paper-soft);padding:var(--space-5) 0}
.stat{display:flex;flex-direction:column;align-items:center;text-align:center}
.stat-num{font-size:clamp(34px,4vw,52px);font-weight:700;letter-spacing:-.03em;line-height:1}
.stat-num .thin{font-weight:400;margin-left:2px;font-size:.55em}
.stat-label{margin-top:10px;font-size:14px;color:var(--ink-soft)}

/* ---------- Spec table ---------- */
.table-wrap{background:#fff;border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;margin:24px 0 40px}
table.spec{width:100%;border-collapse:collapse;min-width:0;font-size:14.5px}
table.spec th{font-size:14px;color:var(--ink-soft);text-align:left;padding:13px 20px;background:var(--paper-soft);font-weight:600}
table.spec td{padding:14px 20px;border-top:1px solid var(--paper-soft)}
table.spec td a{color:var(--ink);font-weight:600}
table.spec td a:hover{color:var(--blue)}
@media (max-width:720px){.table-wrap{overflow-x:auto}table.spec{min-width:560px}}

/* ---------- FAQ split (left list / right figure) ---------- */
.faq-split{align-items:start}
.faq-figure{margin:0;border-radius:var(--radius-img);overflow:hidden}
.faq-figure img{width:100%;aspect-ratio:2/3;object-fit:cover;display:block}
.brand-word{font-family:var(--font-display);font-weight:700;font-size:17px;letter-spacing:.02em;color:var(--ink);margin-left:10px}
.brand-overlay{opacity:.8}

/* ---------- Story figure ---------- */
.story-band{position:relative;overflow:hidden;padding:0}
.story-band .story-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.story-band .story-veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.86) 22%,rgba(255,255,255,.45) 50%,rgba(255,255,255,.06) 76%,rgba(255,255,255,0) 100%)}
.story-band .story-content{position:relative;z-index:1;max-width:680px;margin:0 auto;padding:84px 0 320px;text-align:center}
@media (max-width:720px){.story-band .story-content{padding:52px 0 190px}}

/* ---------- CTA band with backdrop ---------- */
.cta-band{position:relative;overflow:hidden}
.cta-band .cta-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cta-band .cta-veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.93) 0%,rgba(252,252,254,.86) 58%,rgba(249,240,248,.92) 100%)}
.cta-band .container{position:relative;z-index:1}

/* ---------- FAQ (native details) ---------- */
.faq-item{background:#fff;border:1px solid var(--hairline);border-radius:var(--radius-card);margin-bottom:12px;overflow:hidden}
.faq-item summary{cursor:pointer;padding:18px 22px;font-size:16px;font-weight:600;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px;color:var(--ink)}
.faq-item summary::after{content:"";width:12px;height:12px;flex:none;background:currentColor;clip-path:polygon(0 0,100% 0,50% 60%);opacity:.45}
.faq-item[open] summary::after{transform:rotate(180deg)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item p{padding:0 22px 20px;color:var(--ink-soft);font-size:15px}
.faq-item summary:hover{background:#fafafa}

/* ---------- CTA band ---------- */
.cta-band{background:var(--grad-wall);padding:var(--space-5) 0;text-align:center}
.cta-band h2{font-size:var(--fs-h2)}
.cta-band p{color:var(--ink-soft);margin:12px auto 30px;max-width:480px}
.cta-band .hero-actions{margin-top:0}

/* ---------- Footer ---------- */
.site-footer{background:#161617;color:#86868b;padding:var(--space-5) 0 var(--space-3)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:var(--space-4)}
.footer-logo{height:26px;width:auto;filter:brightness(0) invert(1);opacity:.92}
.footer-about{color:#6e6e73;font-size:14px;margin-top:14px;max-width:260px}
.footer-col-title{font-size:14px;color:#f5f5f7;margin-bottom:6px;font-weight:700}
.footer-col a{display:flex;align-items:center;min-height:40px;color:#a1a1a6;font-size:14px;padding:4px 0;font-weight:400}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid #2c2c2e;margin-top:var(--space-4);padding-top:18px;font-size:14px;color:#6e6e73}

/* ---------- Modal (left image / right form) ---------- */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.45);display:none;align-items:center;justify-content:center;z-index:80;padding:20px}
.modal.active{display:flex}
.modal-dialog{background:#fff;border-radius:18px;overflow:hidden;max-width:780px;width:100%;display:grid;grid-template-columns:1fr 1fr;max-height:92vh;color-scheme:light;box-shadow:var(--shadow-float)}
.modal-image-panel{position:relative;min-height:100%}
.modal-image-panel img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.modal-image-overlay{position:absolute;inset:0;background:linear-gradient(0deg,rgba(0,0,0,.45) 0%,rgba(0,0,0,0) 45%);display:flex;align-items:flex-end;padding:22px}
.modal-image-overlay p{color:#fff;font-size:14px}
.modal-form-panel{position:relative;padding:28px 28px 24px;overflow-y:auto}
.modal-form-panel h3{font-size:22px;margin-bottom:16px}
.modal-close{position:absolute;top:14px;right:14px;background:#f2f2f4;border:0;width:40px;height:40px;border-radius:50%;color:var(--ink);cursor:pointer;display:flex;align-items:center;justify-content:center}
.modal-close:hover{background:#e5e5e8}
.inquiry-form .field{display:block;margin-bottom:12px}
.inquiry-form .field span{display:block;font-size:14px;font-weight:600;color:var(--ink-soft);margin-bottom:4px}
.inquiry-form input,.inquiry-form select,.inquiry-form textarea{width:100%;padding:10px 12px;border:1px solid var(--hairline);border-radius:10px;font-size:14px;font-family:inherit;background:#fff;color:var(--ink)}
.inquiry-form input:focus,.inquiry-form select:focus,.inquiry-form textarea:focus{outline:2px solid var(--blue);outline-offset:0;border-color:transparent}
.inquiry-form .btn{margin-top:6px;width:100%;justify-content:center}
.form-hint{font-size:14px;color:var(--ink-soft);margin-top:10px}
@media (max-width:720px){.modal-dialog{grid-template-columns:1fr}.modal-image-panel{display:none}}

/* ---------- Product page & breadcrumb ---------- */
.breadcrumb{font-size:14px;color:var(--ink-soft);margin-bottom:24px;text-align:left;font-family:var(--font-data)}
.breadcrumb a{display:inline-block;min-height:40px;line-height:40px;color:var(--ink-soft)}
.breadcrumb a:hover{color:var(--blue)}
.prod-hero{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;text-align:left}
.prod-hero-img img{width:100%;border-radius:var(--radius-img);box-shadow:var(--shadow-float);aspect-ratio:1/1;object-fit:cover}
.prod-hero-copy h1{font-size:var(--fs-h1);letter-spacing:-.03em}
.hero-sub-static{color:var(--ink-soft);margin-top:16px;max-width:460px;font-size:18px}
.spec-card{background:#fff;border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:26px 28px}
.spec-card .h2{margin-bottom:4px}
.spec-list{list-style:none;margin-top:14px}
.spec-list li{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px solid var(--paper-soft);font-size:15px}
.spec-list b{font-weight:600}
.spec-list span{color:var(--ink-soft)}
.check-list{list-style:none;margin-top:14px}
.check-list li{position:relative;padding-left:26px;margin-bottom:12px;color:var(--ink-soft);font-size:15px}
.check-list li::before{content:"";position:absolute;left:0;top:7px;width:12px;height:12px;border:2px solid var(--blue);border-radius:50%}
@media (max-width:768px){.prod-hero{grid-template-columns:1fr;gap:28px}}

.h2-sm{font-size:24px;margin-bottom:18px;text-align:center}
.h2-md{font-size:30px;margin-bottom:24px;text-align:center}
.actions-left{justify-content:flex-start}
img.hero-img-3x2{aspect-ratio:3/2}
/* ---------- Reveal (soft motion; always visible by default) ---------- */
@media (prefers-reduced-motion:no-preference){
  body.js .reveal.in{animation:reveal-fade .5s ease both}
  @keyframes reveal-fade{from{opacity:.35;transform:translateY(10px)}to{opacity:1;transform:none}}
}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .main-nav{display:none}
  .menu-btn{display:block}
  .header-cta{display:none}
  .hero-wall{padding:64px 0 48px}
  .hero-band .hb-content{padding:60px 0 300px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .section{padding:64px 0}
  .hero-sub{font-size:16px}
  .footer-grid{grid-template-columns:1fr}
}