:root{
    --bg:#ffffff; --text:#17171c; --muted:#6b7280; --soft:#f6f7f9;
    --line:#e9eaee; --accent:#e8491d; --accent-dark:#c93a12;
    --radius:20px; --shadow:0 8px 30px rgba(23,23,28,.08);
    --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{margin:0;font-family:var(--font);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
  a{color:inherit}
  .wrap{width:min(1080px,calc(100% - 48px));margin:0 auto}
  /* nav */
  .nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
  .nav-in{display:flex;align-items:center;justify-content:space-between;height:60px}
  .brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;text-decoration:none}
  .brand img{width:32px;height:32px;border-radius:50%;object-fit:cover}
  .nav-links{display:flex;gap:22px;font-size:14px;color:var(--muted)}
  .nav-links a{text-decoration:none;transition:color .2s}
  .nav-links a:hover{color:var(--text)}
  /* hero */
  .hero{text-align:center;padding:88px 0 64px}
  .hero .avatar{width:128px;height:128px;border-radius:50%;object-fit:cover;box-shadow:var(--shadow);border:4px solid #fff;outline:1px solid var(--line)}
  .hero h1{font-size:clamp(34px,6vw,56px);margin:26px 0 0;letter-spacing:-.02em}
  .hero .tagline{margin:18px auto 0;max-width:640px;color:var(--muted);font-size:clamp(16px,2.4vw,20px);line-height:1.9}
  .hero .tagline strong{color:var(--text)}
  .socials{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:30px}
  .soc{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border:1px solid var(--line);border-radius:999px;font-size:14px;text-decoration:none;background:#fff;transition:all .22s}
  .soc:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#d5d7dd}
  .soc .dot{width:8px;height:8px;border-radius:50%;background:var(--accent)}
  .cta-row{display:flex;gap:12px;justify-content:center;margin-top:26px;flex-wrap:wrap}
  .btn{display:inline-block;padding:14px 30px;border-radius:999px;font-weight:700;font-size:15px;text-decoration:none;transition:all .22s;border:1px solid transparent}
  .btn.primary{background:var(--accent);color:#fff}
  .btn.primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 10px 24px rgba(232,73,29,.32)}
  .btn.ghost{border-color:var(--line);background:#fff}
  .btn.ghost:hover{border-color:#d5d7dd;transform:translateY(-2px);box-shadow:var(--shadow)}
  /* sections */
  .section{padding:72px 0;border-top:1px solid var(--line)}
  .eyebrow{font-size:13px;font-weight:700;letter-spacing:.22em;color:var(--accent);text-transform:uppercase}
  .section h2{font-size:clamp(26px,4vw,38px);margin:12px 0 8px;letter-spacing:-.01em}
  .section .sub{color:var(--muted);font-size:15px;line-height:1.9;max-width:680px}
  /* story */
  .story-body{max-width:720px;margin-top:28px;font-size:17px;line-height:2.05;color:#2b2b31}
  .story-body p{margin:0 0 1.2em}
  .story-body .punch{font-size:20px;font-weight:700;color:var(--text);border-left:4px solid var(--accent);padding-left:18px;margin:1.6em 0}
  .story-toggle{background:none;border:none;color:var(--accent);font-size:16px;font-weight:700;cursor:pointer;padding:6px 0;font-family:inherit}
  .story-toggle:hover{text-decoration:underline}
  .story-full[hidden]{display:none}
  .story-full.show{animation:fadeUp .45s ease}
  /* 悬浮黑胶 BGM */
  .bgm-btn{position:fixed;right:22px;bottom:22px;width:58px;height:58px;border-radius:50%;border:none;cursor:pointer;z-index:60;padding:0;background:transparent;box-shadow:0 8px 24px rgba(0,0,0,.28)}
  .bgm-btn .disc{position:absolute;inset:0;border-radius:50%;background:repeating-radial-gradient(circle at 50% 50%,#0d0d0f 0 2px,#232326 2px 4px)}
  .bgm-btn .disc::after{content:"";position:absolute;left:50%;top:50%;width:20px;height:20px;transform:translate(-50%,-50%);border-radius:50%;background:var(--accent);border:3px solid #fff}
  .bgm-btn .bicon{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:22px;color:#fff;z-index:1;transition:opacity .2s}
  .bgm-btn.playing .disc{animation:spin 5s linear infinite}
  .bgm-btn.playing .bicon{opacity:0}
  @keyframes spin{to{transform:rotate(360deg)}}
  @media (prefers-reduced-motion:reduce){.bgm-btn.playing .disc{animation:none}}
  /* articles */
  .cards{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:24px}
  .card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden;text-decoration:none;display:block;transition:transform .25s,box-shadow .25s}
  .card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
  .card .cover{height:170px;display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}
  .card .cover .glyph{font-size:64px;transition:transform .3s;filter:saturate(1.1)}
  .card:hover .cover .glyph{transform:scale(1.18) rotate(-4deg)}
  .card .cover .cname{position:absolute;bottom:12px;left:16px;right:16px;color:#fff;font-weight:800;font-size:15px;text-shadow:0 1px 8px rgba(0,0,0,.35)}
  .card .body{padding:20px 22px 22px}
  .card .body h3{margin:0 0 8px;font-size:18px}
  .card .body p{margin:0;color:var(--muted);font-size:14px;line-height:1.8}
  .card .meta{display:flex;gap:10px;align-items:center;margin-top:14px;font-size:13px;color:var(--muted)}
.stats{margin-left:auto;font-size:12px;color:var(--muted);white-space:nowrap}
  .tag{font-size:12px;padding:4px 12px;border-radius:999px;background:var(--soft);color:var(--muted)}
  .tag.hot{background:#fff1ea;color:var(--accent);font-weight:700}
  .tag.soon{background:#f0f4ff;color:#3b5bdb}
  .hero-tags{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin:16px 0 0}
  .empty{border:1px dashed var(--line);border-radius:var(--radius);padding:44px 24px;text-align:center;color:var(--muted);margin-top:24px;line-height:2}
  .empty a{color:var(--accent);font-weight:700}
  /* products */
  .price-row{display:flex;align-items:center;justify-content:space-between;margin-top:16px;gap:12px;flex-wrap:wrap}
  .price{font-size:22px;font-weight:800}
  .price small{font-size:13px;color:var(--muted);font-weight:400}
  .buy{display:inline-block;padding:12px 26px;border-radius:999px;background:var(--accent);color:#fff;font-weight:700;font-size:14px;text-decoration:none;transition:all .22s;white-space:nowrap}
  .buy:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 10px 24px rgba(232,73,29,.32)}
  .buy.disabled{background:var(--soft);color:var(--muted);pointer-events:none}
  .todo-pill{display:inline-block;font-size:11px;font-weight:700;color:#92600a;background:#fdf3d7;border:1px dashed #e0b73c;border-radius:999px;padding:3px 10px;margin-left:8px;vertical-align:middle}
  /* services / about */
  .grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:28px}
  .panel{border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;background:#fff;transition:transform .25s,box-shadow .25s}
  .panel:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
  .panel .icon{font-size:34px}
  .panel h3{margin:14px 0 10px;font-size:18px}
  .panel p{margin:0;color:var(--muted);font-size:14px;line-height:1.9}
  .panel ul{margin:12px 0 0;padding-left:18px;color:var(--muted);font-size:14px;line-height:2}
  /* contact */
  .contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:28px;align-items:stretch}
  .qr-box{border:2px dashed var(--line);border-radius:var(--radius);min-height:280px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:var(--muted);background:var(--soft);text-align:center;padding:24px;line-height:1.9}
  .qr-box .big{font-size:44px}
  .qr-box img.qr{width:230px;height:auto;border-radius:12px;background:#fff}
.wx-row{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 6px 6px 16px;font-size:14px;color:var(--text)}
.copy-btn{border:none;background:var(--accent);color:#fff;border-radius:999px;padding:8px 18px;font-size:13px;cursor:pointer;transition:background .2s}
.copy-btn:active{background:var(--accent-dark)}
  .contact-links{display:flex;flex-direction:column;gap:14px}
  .clink{display:flex;align-items:center;gap:14px;border:1px solid var(--line);border-radius:16px;padding:16px 20px;text-decoration:none;transition:all .22s;background:#fff}
  .clink:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
  .clink .ci{font-size:24px}
  .clink .ct b{display:block;font-size:15px}
  .clink .ct span{font-size:13px;color:var(--muted)}
  /* footer */
  footer{border-top:1px solid var(--line);padding:48px 0 56px;text-align:center;color:var(--muted);font-size:14px;line-height:2.2}
  footer .favatar{width:56px;height:56px;border-radius:50%;object-fit:cover}
  footer .days{font-weight:800;color:var(--text)}
  /* reveal */
  .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
  .reveal.in{opacity:1;transform:none}
  @media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}
  @media (max-width:820px){
    .cards,.grid3,.contact-grid{grid-template-columns:1fr}
    .nav-links{display:none}
    .hero{padding:64px 0 48px}
    .section{padding:52px 0}
  }
  /* --- optimized build additions --- */
  .card .cover .cimg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center}
  .card .cover.has-img::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,.5),rgba(0,0,0,0) 55%);pointer-events:none}
  .card .cover .cname{z-index:1}
  .beian a{color:var(--muted);text-decoration:none}
.qr-stack{display:flex;flex-direction:column;gap:16px}
  /* 联系区：桌面端两张二维码并排，联系方式在下方一行两列（手机端仍为单列） */
  @media (min-width:821px){
    #contact .contact-grid{grid-template-columns:1fr}
    #contact .qr-stack{display:grid;grid-template-columns:1fr 1fr;gap:20px}
    #contact .contact-links{display:grid;grid-template-columns:1fr 1fr;gap:20px}
  }