:root{
  --porcelain:#f7f5f0;
  --paper:#fffdf9;
  --celadon:#8aa899;
  --celadon-d:#5f8270;
  --blue:#2b4b7c;
  --ink:#23211c;
  --muted:#7a756b;
  --gold:#c9a96a;
  --line:rgba(35,33,28,.10);
  --shadow:0 10px 40px rgba(35,33,28,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  color:var(--ink);background:var(--porcelain);line-height:1.7;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
.container{max-width:1120px;margin:0 auto;padding:0 24px}
.narrow{max-width:680px}
.center{text-align:center}

/* 导航 */
.nav{position:sticky;top:0;z-index:50;background:rgba(247,245,240,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-weight:700;font-size:18px;letter-spacing:.5px}
.brand span{font-weight:400;color:var(--muted);font-size:13px;margin-left:6px}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{font-size:15px;color:var(--ink);opacity:.85;transition:.2s}
.nav-links a:hover{opacity:1;color:var(--celadon-d)}
.nav-toggle{display:none;background:none;border:0;font-size:24px;cursor:pointer;color:var(--ink)}
.lang-toggle{border:1px solid var(--line);background:#fff;padding:7px 14px;border-radius:30px;cursor:pointer;font-size:13px;font-weight:600;color:var(--ink)}
.lang-toggle:hover{border-color:var(--celadon)}

/* 按钮 */
.btn{display:inline-block;padding:13px 28px;border-radius:40px;background:var(--blue);color:#fff;font-weight:600;font-size:15px;transition:.25s;border:1px solid var(--blue);cursor:pointer}
.btn:hover{background:var(--celadon-d);border-color:var(--celadon-d);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-sm{padding:9px 18px;font-size:14px}

/* Hero */
.hero{position:relative;padding:96px 0 90px;background:
  radial-gradient(1200px 500px at 80% -10%,rgba(138,168,153,.25),transparent),
  radial-gradient(900px 500px at 10% 10%,rgba(43,75,124,.12),transparent),
  linear-gradient(180deg,#fffdf9,#f1efe7)}
.eyebrow{font-size:13px;letter-spacing:3px;color:var(--celadon-d);font-weight:600;text-transform:uppercase}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(38px,6vw,68px);line-height:1.1;margin:18px 0;font-weight:800}
.hero .lead{max-width:520px;color:var(--muted);font-size:17px;margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-visual img{width:100%;max-height:420px;object-fit:cover;border-radius:20px;box-shadow:var(--shadow);background:#fff}

/* 区块 */
.section{padding:90px 0}
.section-alt{background:var(--paper)}
h2{font-size:clamp(26px,4vw,40px);font-weight:800;margin-bottom:14px}
.muted{color:var(--muted)}
.two-col{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center}
.feature-list{list-style:none;margin-top:22px;display:grid;gap:10px}
.feature-list li{color:var(--ink);font-size:15px}
.about-card{display:grid;grid-template-columns:1fr 1fr;gap:14px;background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:var(--shadow)}
.stat{text-align:center;padding:14px 8px;border-radius:12px;background:linear-gradient(160deg,#fff,#f3f1ea)}
.stat b{display:block;font-size:26px;color:var(--blue)}
.stat span{font-size:12px;color:var(--muted)}

/* 作品筛选 + 瀑布流 */
.filters{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin:26px 0 34px}
.chip{border:1px solid var(--line);background:#fff;padding:9px 20px;border-radius:30px;cursor:pointer;font-size:14px;transition:.2s}
.chip:hover{border-color:var(--celadon)}
.chip.active{background:var(--blue);color:#fff;border-color:var(--blue)}
.grid{column-count:3;column-gap:22px}
.card{display:inline-block;width:100%;margin:0 0 22px;break-inside:avoid;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow);transition:.25s;cursor:pointer}
.card:hover{transform:translateY(-4px);box-shadow:0 16px 44px rgba(35,33,28,.14)}
.thumb{height:220px;position:relative;overflow:hidden;background:linear-gradient(160deg,#eee,#e3e0d8)}
.thumb.tall{height:320px}
.thumb img{width:100%;height:100%;object-fit:cover;transition:.4s;display:block}
.card:hover .thumb img{transform:scale(1.05)}
.card-body{padding:16px 18px 20px}
.card-body h3{font-size:17px;margin-bottom:6px}
.card-body p{font-size:13px;color:var(--muted)}
.cat-tag{display:inline-block;margin-top:10px;font-size:11px;letter-spacing:1px;color:var(--celadon-d);border:1px solid var(--line);padding:2px 10px;border-radius:20px}

/* 工艺 */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-top:36px}
.step{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:26px 22px;box-shadow:var(--shadow)}
.step span{font-size:30px;font-weight:800;color:var(--gold)}
.step h3{margin:10px 0 6px;font-size:18px}
.step p{font-size:14px;color:var(--muted)}

/* 表单 */
.form{background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px;box-shadow:var(--shadow);margin-top:26px;display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;color:var(--muted);font-weight:600}
.field input,.field select,.field textarea{font:inherit;padding:12px 14px;border:1px solid var(--line);border-radius:10px;background:var(--porcelain);color:var(--ink)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--celadon)}
.form .btn.full{grid-column:1 / -1;text-align:center}
.form-note{grid-column:1/-1;text-align:center;color:var(--celadon-d);font-weight:600}

/* 页脚 */
.footer{background:var(--ink);color:#e9e6df;padding:56px 0 28px;margin-top:30px}
.footer-inner{display:flex;justify-content:space-between;flex-wrap:wrap;gap:24px}
.footer .brand{color:#fff}
.footer-links{display:flex;flex-direction:column;gap:8px;font-size:14px}
.footer-links a:hover{color:var(--celadon)}
.footer-links span{color:#a8a399;font-size:13px}
.copy{text-align:center;color:#8d877c;font-size:13px;margin-top:30px;border-top:1px solid rgba(255,255,255,.08);padding-top:18px}

/* 产品详情弹窗 */
.modal{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:20px}
.modal[hidden]{display:none}
.modal-overlay{position:absolute;inset:0;background:rgba(20,18,14,.6);backdrop-filter:blur(3px)}
.modal-dialog{position:relative;background:var(--paper);border-radius:20px;max-width:880px;width:100%;max-height:90vh;overflow:auto;box-shadow:0 30px 80px rgba(0,0,0,.3)}
.modal-close{position:absolute;top:14px;right:16px;z-index:2;width:38px;height:38px;border-radius:50%;border:1px solid var(--line);background:#fff;font-size:22px;line-height:1;cursor:pointer;color:var(--ink)}
.modal-close:hover{background:var(--porcelain)}
.modal-grid{display:grid;grid-template-columns:1fr 1fr}
.modal-img{background:#fff}
.modal-img img{width:100%;height:100%;min-height:320px;object-fit:cover}
.modal-info{padding:34px 30px}
.modal-info h3{font-size:24px;margin:12px 0 14px}
.m-desc{color:var(--muted);font-size:15px;margin-bottom:18px}
.specs{width:100%;border-collapse:collapse;margin-bottom:22px}
.specs th{text-align:left;font-weight:600;color:var(--muted);font-size:13px;width:84px;padding:8px 10px 8px 0;border-bottom:1px solid var(--line);vertical-align:top}
.specs td{padding:8px 0;border-bottom:1px solid var(--line);font-size:14px}

/* 响应式 */
@media(max-width:900px){
  .grid{column-count:2}
  .modal-grid{grid-template-columns:1fr}
  .modal-img img{min-height:240px}
}
@media(max-width:760px){
  .nav-links{position:absolute;top:64px;left:0;right:0;background:var(--paper);flex-direction:column;gap:0;padding:0 24px;max-height:0;overflow:hidden;transition:.3s;border-bottom:1px solid var(--line)}
  .nav-links.open{max-height:340px;padding:14px 24px}
  .nav-links a{padding:12px 0;border-bottom:1px solid var(--line);width:100%}
  .nav-toggle{display:block}
  .hero-inner{grid-template-columns:1fr;gap:30px}
  .hero{padding:70px 0 60px}
  .two-col{grid-template-columns:1fr;gap:30px}
  .form{grid-template-columns:1fr}
  .grid{column-count:1}
}