:root{
  --ink:#171614;
  --paper:#f7f4ee;
  --paper-2:#ece7de;
  --muted:#6f6a61;
  --line:#d7cbb8;
  --gold:#b8914c;
  --green:#264137;
  --wine:#652b35;
  --silver:#d7d9d3;
  --shadow:0 24px 60px rgba(18,17,15,.16);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.65}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.site-header{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:28px;padding:12px clamp(18px,4vw,54px);background:rgba(247,244,238,.92);backdrop-filter:blur(14px);border-bottom:1px solid rgba(215,203,184,.72)}
.brand{display:flex;align-items:center;gap:10px;min-width:max-content}
.brand-logo{width:76px;height:50px;object-fit:contain;flex:0 0 auto}
.brand-mark{display:grid;place-items:center;width:42px;height:42px;border:1px solid var(--gold);background:var(--ink);color:var(--paper);font-family:Georgia,serif;letter-spacing:0}
.brand strong{display:block;font-size:17px;line-height:1.1;white-space:nowrap}
.brand small{display:block;color:var(--muted);font-size:10px;letter-spacing:.06em;text-transform:uppercase}
.main-nav{display:flex;gap:22px;margin-left:auto;font-size:14px;color:#393630}
.main-nav a{padding:8px 0;border-bottom:2px solid transparent}
.main-nav a.active,.main-nav a:hover{border-color:var(--gold);color:#000}
.nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:11px 18px;border:1px solid var(--ink);font-weight:700}
.nav-cta{background:var(--ink);color:var(--paper);min-width:max-content}
.button--light{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.button--line{color:var(--paper);border-color:rgba(247,244,238,.7)}
.button--dark{background:var(--ink);color:var(--paper)}
.button--outline{background:transparent;color:var(--ink);border-color:var(--line)}
.hero{min-height:calc(100vh - 74px);display:grid;align-items:end;position:relative;color:var(--paper);background:linear-gradient(90deg,rgba(18,17,15,.82),rgba(18,17,15,.42),rgba(18,17,15,.08)),var(--hero-image) center/cover no-repeat;padding:clamp(44px,7vw,90px) clamp(18px,5vw,72px) 24px}
.hero__content{max-width:1040px;padding-bottom:44px}
.eyebrow{display:block;color:var(--gold);font-weight:800;text-transform:uppercase;letter-spacing:.13em;font-size:12px;margin-bottom:12px}
h1,h2,h3{font-family:"Microsoft YaHei",Arial,sans-serif;letter-spacing:0;line-height:1.15;margin:0;color:inherit}
h1{font-size:clamp(42px,7vw,82px)}
.hero-title-nowrap{white-space:nowrap;font-size:72px;line-height:1.08}
h2{font-size:clamp(28px,4vw,46px)}
h3{font-size:21px}
p{margin:0;color:inherit}
.hero p{font-size:18px;max-width:680px;color:rgba(247,244,238,.9);margin-top:18px}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero__series-strip{display:grid;grid-template-columns:repeat(8,1fr);gap:1px;background:rgba(247,244,238,.28);border:1px solid rgba(247,244,238,.36)}
.hero__series-strip a{padding:14px 12px;background:rgba(23,22,20,.55);color:var(--paper);font-weight:700}
.hero__series-strip span{display:block;color:var(--gold);font-size:11px;text-transform:uppercase}
.section{padding:clamp(54px,8vw,96px) clamp(18px,5vw,72px)}
.intro-band{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);gap:42px;align-items:center;background:var(--green);color:var(--paper)}
.intro-copy p,.section-head p{color:var(--muted);max-width:680px}
.intro-band .section-head p,.intro-band p{color:rgba(247,244,238,.72)}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(247,244,238,.22)}
.metrics div{padding:22px;background:rgba(247,244,238,.08)}
.metrics strong{display:block;font-size:38px;font-family:Georgia,serif;color:var(--gold)}
.metrics span{font-size:13px;color:rgba(247,244,238,.75)}
.section-head{display:flex;justify-content:space-between;gap:32px;align-items:end;margin-bottom:30px}
.series-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.series-tile{background:#fff;border:1px solid var(--line);display:grid;grid-template-rows:210px 1fr;box-shadow:0 12px 36px rgba(23,22,20,.06)}
.series-tile__image{overflow:hidden}
.series-tile img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.series-tile:hover img{transform:scale(1.045)}
.series-tile div{padding:20px}
.series-tile span,.series-tile small{display:block;color:var(--gold);font-size:12px;font-weight:800;text-transform:uppercase}
.series-tile p{color:var(--muted);margin-top:10px;font-size:14px}
.series-tile small{margin-top:14px;color:var(--green)}
.section--ink{background:var(--ink);color:var(--paper)}
.section--ink .section-head p{color:rgba(247,244,238,.68)}
.product-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.product-card{background:#fff;border:1px solid var(--line);min-width:0}
.product-grid--dark .product-card{background:#24221f;border-color:#3a352e}
.product-card__media{display:block;aspect-ratio:1/1;overflow:hidden;background:#dfddd6}
.product-card[data-size="25x100cm"] .product-card__media{aspect-ratio:4/1}
.product-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.product-card:hover img{transform:scale(1.04)}
.product-card__body{padding:16px}
.product-card h3{font-size:18px}
.product-card p{color:var(--muted);font-size:14px;margin-top:6px}
.product-grid--dark .product-card p{color:rgba(247,244,238,.62)}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.tags span{border:1px solid var(--line);padding:3px 8px;font-size:12px;color:var(--muted)}
.product-grid--dark .tags span{border-color:#4b463e;color:rgba(247,244,238,.68)}
.seo-matrix{display:grid;grid-template-columns:minmax(0,.9fr) minmax(320px,1.1fr);gap:40px;align-items:center;background:var(--paper-2)}
.seo-matrix p{color:var(--muted);margin-top:16px}
.matrix-links{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.matrix-links a{padding:20px;border:1px solid var(--line);background:rgba(255,255,255,.52);font-weight:800}
.page-hero,.series-hero{padding:70px clamp(18px,5vw,72px);background:var(--paper-2)}
.compact-hero h1{font-size:clamp(34px,5vw,58px);margin-top:8px}
.compact-hero p{max-width:780px;margin-top:16px;color:var(--muted)}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:18px}
.breadcrumb a{color:var(--green)}
.catalog-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:32px;align-items:start}
.filters{position:sticky;top:92px;background:#fff;border:1px solid var(--line);padding:18px;display:grid;gap:14px}
.filters label{display:grid;gap:6px;font-weight:800;font-size:13px}
input,select,textarea{width:100%;border:1px solid var(--line);background:#fbfaf7;min-height:42px;padding:10px 12px;font:inherit;color:var(--ink)}
textarea{resize:vertical}
.catalog-count{margin-bottom:18px;color:var(--muted)}
.series-hero{min-height:520px;display:flex;align-items:end;color:var(--paper);background:linear-gradient(90deg,rgba(18,17,15,.75),rgba(18,17,15,.2)),var(--hero-image) center/cover no-repeat}
.series-hero>div{max-width:760px}
.series-hero p{color:rgba(247,244,238,.86);font-size:18px;margin-top:16px}
.spec-row{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);padding:1px}
.spec-row div{background:var(--paper);padding:24px clamp(18px,4vw,42px)}
.spec-row span{display:block;color:var(--muted);font-size:13px}
.spec-row strong{font-size:22px}
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.scene-grid img{width:100%;height:300px;object-fit:cover}
.product-detail{display:grid;grid-template-columns:minmax(320px,.95fr) minmax(320px,1.05fr);min-height:calc(100vh - 72px);background:#fff}
.product-detail__media{background:#dedbd2;display:grid;place-items:center;padding:clamp(24px,5vw,72px)}
.product-detail__media img{width:min(680px,100%);box-shadow:var(--shadow)}
.product-detail__copy{padding:clamp(36px,6vw,86px);align-self:center}
.product-detail h1{font-size:clamp(40px,6vw,72px)}
.product-detail p{margin-top:18px;color:var(--muted);font-size:17px}
.spec-list{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;margin:28px 0 0;background:var(--line)}
.spec-list div{background:#fff;padding:14px}
.spec-list dt{font-size:12px;color:var(--muted)}
.spec-list dd{margin:3px 0 0;font-weight:800}
.spec-list a{color:var(--green)}
.product-story{display:grid;grid-template-columns:minmax(0,.9fr) minmax(320px,1.1fr);gap:36px;align-items:center;background:var(--green);color:var(--paper)}
.product-story p{color:rgba(247,244,238,.76);margin-top:16px}
.product-story img{width:100%;height:440px;object-fit:cover}
.product-faq{background:var(--paper-2)}
.faq-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);padding:0}
.faq-item summary{cursor:pointer;list-style:none;padding:18px 20px;font-weight:900}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";float:right;color:var(--gold);font-size:20px;line-height:1}
.faq-item[open] summary::after{content:"-"}
.faq-item p{border-top:1px solid var(--line);color:var(--muted);padding:16px 20px}
.project-hero{min-height:560px;display:flex;align-items:end;color:var(--paper);padding:70px clamp(18px,5vw,72px);background:linear-gradient(90deg,rgba(18,17,15,.82),rgba(18,17,15,.46),rgba(18,17,15,.14)),var(--project-hero) center/cover no-repeat}
.project-hero__copy{max-width:860px}
.project-hero h1{font-size:clamp(40px,6vw,76px)}
.project-hero p{max-width:780px;color:rgba(247,244,238,.88);font-size:18px;margin-top:18px}
.project-hero .breadcrumb{color:rgba(247,244,238,.72)}
.project-hero .breadcrumb a{color:var(--paper)}
.project-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.project-tags span{border:1px solid rgba(247,244,238,.36);background:rgba(247,244,238,.1);padding:8px 12px;font-weight:800;font-size:13px}
.project-overview{display:grid;grid-template-columns:minmax(0,.9fr) minmax(340px,1.1fr);gap:36px;align-items:center;background:var(--paper-2)}
.project-overview p{color:var(--muted);margin-top:16px}
.project-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line)}
.project-metrics div{background:#fff;padding:24px}
.project-metrics strong{display:block;font-size:21px}
.project-metrics span{display:block;color:var(--muted);margin-top:6px;font-size:13px}
.project-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.project-card{background:#fff;border:1px solid var(--line);box-shadow:0 14px 34px rgba(23,22,20,.06)}
.project-card__image{display:block;aspect-ratio:16/10;overflow:hidden;background:#dedbd2}
.project-card__image img{width:100%;height:100%;object-fit:cover;transition:transform .38s ease}
.project-card:hover img{transform:scale(1.04)}
.project-card__body{padding:20px}
.project-card__body h3{margin-top:12px}
.project-card__body p{color:var(--muted);margin-top:10px;font-size:14px}
.project-meta{display:flex;flex-wrap:wrap;gap:6px}
.project-meta span{border:1px solid var(--line);color:var(--green);padding:3px 8px;font-weight:800;font-size:12px}
.logo-section{background:#fff}
.logo-wall{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px}
.logo-mark{min-height:132px;border:1px solid var(--line);background:linear-gradient(145deg,#fbfaf7,#ece7de);display:grid;align-content:center;justify-items:center;text-align:center;padding:18px}
.logo-mark strong{width:48px;height:48px;display:grid;place-items:center;border:1px solid var(--gold);background:var(--ink);color:var(--paper);font-family:Georgia,serif;font-size:18px}
.logo-mark span{font-weight:900;margin-top:10px}
.logo-mark small{color:var(--muted);font-size:12px;margin-top:3px}
.project-process{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);padding:1px}
.project-process div{background:var(--green);color:var(--paper);padding:28px}
.project-process span{display:block;color:var(--gold);font-family:Georgia,serif;font-size:24px}
.project-process strong{display:block;font-size:20px;margin-top:8px}
.project-process p{color:rgba(247,244,238,.72);font-size:14px;margin-top:10px}
.contact-grid{display:grid;grid-template-columns:minmax(280px,.8fr) minmax(320px,1.2fr);gap:30px}
.contact-grid>div,.inquiry-form{background:#fff;border:1px solid var(--line);padding:28px}
.official-note{margin-top:16px;color:var(--muted);font-size:14px}
.contact-answer{display:grid;grid-template-columns:minmax(320px,1fr) minmax(320px,1fr);gap:18px;background:var(--paper-2)}
.answer-panel{background:#fff;border:1px solid var(--line);padding:30px}
.answer-panel h2{font-size:clamp(26px,3vw,38px)}
.answer-panel p{margin-top:10px;color:var(--muted)}
.answer-panel--ink{background:var(--green);color:var(--paper);border-color:var(--green)}
.answer-panel--ink p{color:rgba(247,244,238,.8)}
.inquiry-form{display:grid;gap:14px}
.inquiry-form label{display:grid;gap:6px;font-weight:800}
.site-footer{display:grid;grid-template-columns:1.2fr .7fr .8fr 1.2fr;gap:22px;background:#11100e;color:var(--paper);padding:38px clamp(18px,5vw,72px)}
.site-footer p,.site-footer span{color:rgba(247,244,238,.64);font-size:14px}
.site-footer a{color:var(--paper)}
.hidden{display:none!important}
@media (max-width:1100px){
  .hero-title-nowrap{font-size:58px}
  .series-grid,.product-grid,.project-grid{grid-template-columns:repeat(3,1fr)}
  .logo-wall{grid-template-columns:repeat(3,1fr)}
  .hero__series-strip{grid-template-columns:repeat(4,1fr)}
  .catalog-layout,.product-detail,.intro-band,.seo-matrix,.product-story,.contact-grid,.project-overview,.contact-answer{grid-template-columns:1fr}
  .filters{position:static}
}
@media (max-width:760px){
  .site-header{gap:12px;flex-wrap:wrap}
  .main-nav{order:3;width:100%;overflow:auto;gap:16px;margin-left:0}
  .nav-cta{margin-left:auto}
  .hero{min-height:760px}
  .hero-title-nowrap{font-size:34px}
  .hero__series-strip,.metrics,.spec-row,.matrix-links,.site-footer,.project-metrics,.logo-wall,.project-process{grid-template-columns:1fr 1fr}
  .series-grid,.product-grid,.scene-grid,.project-grid,.faq-list{grid-template-columns:1fr}
  .section-head{display:block}
  .section-head p{margin-top:12px}
  .spec-list{grid-template-columns:1fr}
  .product-detail__copy{padding:32px 18px}
  .site-footer{grid-template-columns:1fr}
}