/* ============ 肽研集团 TAIYAN GROUP — white & gold elegant ============ */
:root{
  --char:#2a251c;
  --ink:#332c1f;
  --gold:#b8963e;
  --gold-2:#c9a227;
  --gold-3:#e6c96a;
  --ivory:#fdfcf7;
  --cream:#faf6ea;
  --line:#e9e0c6;
  --muted:#8d8264;
  --paper:#fdfcf8;
  --white:#ffffff;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:100px}
body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.75 Georgia,'Times New Roman','Songti SC',serif}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button,a,input,summary{outline-offset:4px}
button{cursor:pointer}
button:disabled{opacity:.35;cursor:default}

/* ---------- notice ---------- */
.notice{background:linear-gradient(90deg,#f6efd9,#efe4c2);color:#7a6416;text-align:center;font-size:11px;letter-spacing:2px;padding:8px 16px;font-family:-apple-system,'PingFang SC',sans-serif}

/* ---------- header ---------- */
.site-header{display:flex;align-items:center;justify-content:space-between;padding:20px 5%;border-bottom:1px solid var(--line);background:rgba(253,252,248,.94);backdrop-filter:blur(10px);position:sticky;top:0;z-index:5;gap:24px}
.brand{display:flex;align-items:center;gap:14px}
.brand-mark{display:grid;place-items:center;width:46px;height:46px;border:1px solid var(--gold);background:linear-gradient(135deg,#fffdf4,#f7edd2);color:#7a6416;font:700 15px/1 Georgia,serif;letter-spacing:2px;box-shadow:inset 0 0 12px rgba(201,162,39,.18)}
.brand-text{font-size:20px;font-weight:700;letter-spacing:3px;color:var(--char);display:flex;flex-direction:column;line-height:1.25}
.brand-text em{font-style:normal;font-size:9px;letter-spacing:4px;font-weight:600;color:var(--gold)}
.site-nav{display:flex;gap:30px;font-size:13px;color:var(--muted);font-family:-apple-system,'PingFang SC',sans-serif}
.site-nav a{padding:6px 2px;border-bottom:1px solid transparent;transition:.2s;letter-spacing:1px}
.site-nav a:hover{color:var(--char);border-color:var(--gold)}
.lang-btn{background:var(--white);border:1px solid var(--gold);color:#7a6416;padding:8px 18px;font-size:12px;letter-spacing:1px;transition:.2s;font-family:-apple-system,'PingFang SC',sans-serif}
.lang-btn:hover{background:#f7edd2}

/* ---------- hero ---------- */
.hero{position:relative;background:radial-gradient(1000px 500px at 82% -10%,rgba(201,162,39,.12),transparent 60%),linear-gradient(180deg,#fffdf6,var(--ivory));overflow:hidden}
.hero::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--gold-2) 30%,var(--gold-3) 50%,var(--gold-2) 70%,transparent)}
.hero-glow{position:absolute;inset:0;background:radial-gradient(600px 300px at 15% 100%,rgba(201,162,39,.08),transparent 65%)}
.hero-inner{position:relative;display:grid;grid-template-columns:1.12fr 1fr;gap:6%;align-items:center;max-width:1280px;margin:0 auto;padding:80px 5%}
.badge{display:inline-block;font-size:10.5px;letter-spacing:4px;font-weight:600;color:#8a6d1f;border:1px solid rgba(184,150,62,.5);background:rgba(255,253,244,.7);padding:8px 20px;margin:0 0 28px;font-family:ui-monospace,monospace}
h1{font-size:clamp(40px,4.6vw,66px);line-height:1.2;letter-spacing:2px;margin:0 0 24px;color:var(--char);font-weight:700}
.lead{max-width:520px;color:#6f6450;font-size:16px;margin:0 0 36px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:46px}
.btn{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,#e6c96a,#c9a227 60%,#a5841f);color:#241a03;padding:14px 30px;font-size:13.5px;font-weight:700;letter-spacing:1px;transition:.2s;font-family:-apple-system,'PingFang SC',sans-serif;box-shadow:0 8px 22px rgba(160,125,35,.25)}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(160,125,35,.33)}
.btn.ghost{background:transparent;color:#7a6416;border:1px solid rgba(184,150,62,.55);box-shadow:none}
.btn.ghost:hover{background:rgba(201,162,39,.08)}
.hero-stats{display:flex;list-style:none;margin:0;padding:0;border:1px solid var(--line);max-width:520px;background:var(--white);box-shadow:0 6px 20px rgba(120,95,30,.06)}
.hero-stats li{flex:1;padding:16px 18px;border-right:1px solid var(--line)}
.hero-stats li:last-child{border-right:0}
.hero-stats b{display:block;font-size:19px;color:#8a6d1f;letter-spacing:1px}
.hero-stats span{font-size:11.5px;color:var(--muted);font-family:-apple-system,'PingFang SC',sans-serif}

/* hero visual */
.hero-visual{display:flex;justify-content:center}
.visual-panel{background:linear-gradient(160deg,#fffdf4,#faf3dd);border:1px solid rgba(184,150,62,.4);padding:24px 24px 20px;width:min(100%,360px);box-shadow:0 26px 60px rgba(120,95,30,.16);position:relative}
.visual-panel::before{content:'';position:absolute;inset:8px;border:1px solid rgba(184,150,62,.25);pointer-events:none}
.visual-head{display:flex;justify-content:space-between;color:#a08a4d;font:600 10px/1 ui-monospace,monospace;letter-spacing:2px;margin-bottom:8px}
.visual-head b{color:#7a6416;letter-spacing:4px}
.rays{display:block;width:100%;height:auto}
.chips{display:flex;gap:8px;justify-content:center;margin-top:12px}
.chips span{font:700 10.5px/1 ui-monospace,monospace;letter-spacing:2px;color:#7a6416;border:1px solid rgba(184,150,62,.4);background:rgba(255,253,244,.6);padding:6px 14px}

/* ---------- rule strip ---------- */
.rulestrip{display:flex;align-items:center;gap:26px;background:var(--white);padding:16px 5%;border-bottom:1px solid var(--line)}
.rulestrip span{flex:1;height:1px;background:linear-gradient(90deg,transparent,rgba(184,150,62,.5),transparent)}
.rulestrip b{color:#a08a4d;font:600 10.5px/1 ui-monospace,monospace;letter-spacing:4px;white-space:nowrap}

/* ---------- sections ---------- */
.section{padding:92px 5%;max-width:1280px;margin:0 auto}
.section.alt{background:var(--white);max-width:none;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section.alt>*{max-width:1180px;margin-left:auto;margin-right:auto}
.section.alt small{display:block;text-align:center;color:var(--muted);margin-top:36px;font-size:12px;font-family:-apple-system,'PingFang SC',sans-serif}
.eyebrow{font-size:10.5px;letter-spacing:4px;font-weight:600;color:var(--gold);margin:0 0 18px;font-family:ui-monospace,monospace}
h2{font-size:clamp(28px,3vw,38px);line-height:1.35;font-weight:700;margin:0 0 20px;color:var(--char);letter-spacing:1px}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:42px;flex-wrap:wrap}
.section-head p:last-child{color:var(--muted);font-size:14px;margin:0;max-width:420px;font-family:-apple-system,'PingFang SC',sans-serif}

/* ---------- toolbar ---------- */
.toolbar{display:flex;align-items:center;gap:14px;margin-bottom:30px;flex-wrap:wrap}
.search{display:flex;align-items:center;gap:10px;background:var(--white);border:1px solid var(--line);padding:12px 18px;flex:1;min-width:240px;max-width:460px;color:#7a6416;box-shadow:0 3px 12px rgba(120,95,30,.05)}
.search:focus-within{border-color:var(--gold);box-shadow:0 0 0 4px rgba(201,162,39,.13)}
.search input{border:0;outline:0;background:none;width:100%;font-size:14px;color:var(--ink);font-family:-apple-system,'PingFang SC',sans-serif}
.search input::placeholder{color:#c0b493}
.mini-btn{background:var(--white);border:1px solid var(--line);padding:11px 20px;font-size:12.5px;color:var(--muted);transition:.2s;font-family:-apple-system,'PingFang SC',sans-serif}
.mini-btn:hover{color:#7a6416;border-color:var(--gold)}
.count{margin-left:auto;font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums;font-family:-apple-system,'PingFang SC',sans-serif}

/* ---------- catalog grid ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(262px,1fr));gap:20px}
.card{position:relative;text-align:left;background:var(--white);border:1px solid var(--line);padding:22px 22px 18px;transition:.22s;display:flex;flex-direction:column;gap:8px;box-shadow:0 3px 14px rgba(120,95,30,.05)}
.card::after{content:'';position:absolute;left:22px;right:22px;bottom:0;height:2px;background:linear-gradient(90deg,var(--gold-3),var(--gold-2));transform:scaleX(0);transform-origin:left;transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:0 16px 38px rgba(120,95,30,.14);border-color:#dcc88f}
.card:hover::after{transform:scaleX(1)}
.card .number{font:600 10px/1 ui-monospace,monospace;letter-spacing:2.5px;color:#b39c4d}
.card .photo{display:block;margin:2px -4px 6px;background:linear-gradient(160deg,#fffdf6,#f8f1dc);border:1px solid var(--line)}
.card .photo img{display:block;width:100%;aspect-ratio:1;object-fit:contain;padding:14px;box-sizing:border-box;transition:.25s}
.card:hover .photo img{transform:scale(1.05)}
.card .symbol{position:absolute;top:18px;right:20px;font-size:18px;color:var(--line)}
.card h3{margin:0;font-size:16px;line-height:1.45;color:var(--char);font-weight:700;padding-right:26px;font-family:-apple-system,'PingFang SC',sans-serif}
.card p{margin:0;font-size:13px;color:var(--muted);font-family:-apple-system,'PingFang SC',sans-serif}
.card .go{margin-top:auto;padding-top:12px;font-size:12.5px;font-weight:700;color:#7a6416;display:inline-flex;gap:6px;align-items:center;letter-spacing:.5px;font-family:-apple-system,'PingFang SC',sans-serif}
.card .go span{transition:.2s}
.card:hover .go span{transform:translate(2px,-2px)}

/* ---------- pagination ---------- */
.pagination{display:flex;align-items:center;justify-content:center;gap:20px;margin-top:38px}
.pagination button{background:var(--white);border:1px solid var(--line);padding:11px 22px;font-size:13px;color:var(--ink);transition:.2s;font-family:-apple-system,'PingFang SC',sans-serif}
.pagination button:hover:not(:disabled){border-color:var(--gold);color:#7a6416}
.pagination span{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;font-family:ui-monospace,monospace}
.source-note{font-size:12px;color:var(--muted);margin-top:36px;max-width:720px;font-family:-apple-system,'PingFang SC',sans-serif}
#empty{color:var(--muted);text-align:center;padding:40px 0}

/* ---------- documents ---------- */
.doc-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:20px;margin-top:46px}
.doc-grid article{background:var(--paper);border:1px solid var(--line);padding:28px 26px;transition:.2s}
.doc-grid article:hover{border-color:var(--gold);transform:translateY(-3px)}
.doc-grid b{display:inline-grid;place-items:center;min-width:54px;height:32px;padding:0 12px;background:linear-gradient(135deg,#fffdf4,#f3e7c4);color:#7a6416;font:700 11.5px/1 ui-monospace,monospace;letter-spacing:2px;margin-bottom:20px;border:1px solid var(--gold)}
.doc-grid h3{margin:0 0 10px;font-size:16px;color:var(--char);font-family:-apple-system,'PingFang SC',sans-serif}
.doc-grid p{margin:0;font-size:13.5px;color:var(--muted);font-family:-apple-system,'PingFang SC',sans-serif}

/* ---------- about ---------- */
.about{display:grid;grid-template-columns:1fr 1fr;gap:7%;align-items:start}
.about p{color:var(--muted);margin:0 0 18px;font-size:15px}
.text-link{display:inline-block;font-size:13.5px;font-weight:700;color:#7a6416;border-bottom:1px solid var(--gold);padding-bottom:2px;transition:.2s;letter-spacing:.5px;font-family:-apple-system,'PingFang SC',sans-serif}
.text-link:hover{color:#a5841f}

/* ---------- contact ---------- */
.contact{padding-top:0}
.contact-card{display:flex;justify-content:space-between;align-items:center;gap:40px;background:linear-gradient(140deg,#fffdf4,#f7edd2);color:#6f5c22;padding:56px 6%;position:relative;overflow:hidden;flex-wrap:wrap;border:1px solid rgba(184,150,62,.45);box-shadow:0 18px 44px rgba(120,95,30,.10)}
.contact-card::before{content:'';position:absolute;inset:10px;border:1px solid rgba(184,150,62,.3);pointer-events:none}
.contact-card>*{position:relative;z-index:1}
.contact-card .eyebrow{color:#8a6d1f}
.contact-card h2{color:var(--char);margin-bottom:12px}
.contact-card p{color:#857448;max-width:520px;margin:0;font-size:14.5px;font-family:-apple-system,'PingFang SC',sans-serif}
.wa-button{display:inline-flex;align-items:center;gap:12px;background:#25d366;color:#06351c;font-weight:700;padding:16px 28px;font-size:14px;white-space:nowrap;transition:.2s;box-shadow:0 8px 22px rgba(37,211,102,.3);font-family:-apple-system,'PingFang SC',sans-serif}
.wa-button:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(37,211,102,.4)}
.wa-button.small{padding:11px 20px;font-size:13px;margin:0 0 14px}

/* ---------- floating WhatsApp ---------- */
.wa-float{position:fixed;right:22px;bottom:22px;z-index:50;display:grid;place-items:center;width:58px;height:58px;background:#25d366;color:#fff;box-shadow:0 10px 26px rgba(37,211,102,.45);transition:.2s;border:1px solid rgba(255,255,255,.3)}
.wa-float:hover{transform:scale(1.08)}
.wa-float::before{content:'';position:absolute;inset:-6px;border:1px solid rgba(37,211,102,.5);animation:wa-pulse 2s ease-out infinite}
@keyframes wa-pulse{0%{transform:scale(.85);opacity:1}100%{transform:scale(1.35);opacity:0}}

/* ---------- faq ---------- */
.faq-list{max-width:820px;margin-top:38px;display:flex;flex-direction:column;gap:12px}
.faq-list details{background:var(--white);border:1px solid var(--line);padding:4px 24px;transition:.2s}
.faq-list details[open]{border-color:var(--gold);box-shadow:0 8px 24px rgba(120,95,30,.09)}
.faq-list summary{cursor:pointer;list-style:none;font-weight:700;color:var(--char);padding:16px 30px 16px 0;position:relative;font-size:15px;font-family:-apple-system,'PingFang SC',sans-serif}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:'+';position:absolute;right:2px;top:50%;transform:translateY(-50%);font-size:20px;font-weight:400;color:var(--gold);transition:.2s}
.faq-list details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-list details p{margin:0 0 18px;color:var(--muted);font-size:14px;font-family:-apple-system,'PingFang SC',sans-serif}

/* ---------- footer ---------- */
.site-footer{background:var(--char);color:#cfc2a0;margin-top:44px;border-top:2px solid var(--gold)}
.footer-inner{max-width:1280px;margin:0 auto;padding:64px 5% 36px;display:flex;flex-direction:column;gap:20px}
.footer-brand .brand-text{color:#f5edd8}
.footer-brand .brand-text em{color:var(--gold-3)}
.footer-brand .brand-mark{background:linear-gradient(135deg,#3a3223,#241f14);color:var(--gold-3);border-color:var(--gold)}
.footer-inner>p{margin:0;font-size:16px;font-style:italic;color:#b5a888}
.footer-bottom{border-top:1px solid rgba(201,162,39,.25);padding-top:24px;font-size:12.5px;color:#9a8d6c;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-family:-apple-system,'PingFang SC',sans-serif}
.footer-bottom a{color:#dcc98f}
.footer-bottom a:hover{color:#fff}

/* ---------- dialog ---------- */
dialog{border:0;padding:38px 40px 34px;max-width:520px;width:calc(100% - 40px);color:var(--ink);box-shadow:0 30px 80px rgba(60,45,10,.35);background:var(--white);border:1px solid var(--gold)}
dialog::backdrop{background:rgba(42,37,28,.45);backdrop-filter:blur(4px)}
dialog h2{margin:0 0 6px;font-size:24px;color:var(--char);letter-spacing:0;padding-right:30px}
.detail-photo{display:block;margin:0 0 18px;background:linear-gradient(160deg,#fffdf6,#f8f1dc);border:1px solid var(--line)}
.detail-photo img{display:block;width:100%;max-height:260px;object-fit:contain;padding:18px;box-sizing:border-box}
.detail-photo small{display:block;text-align:center;font-size:11px;color:var(--muted);padding:0 12px 12px;font-family:-apple-system,'PingFang SC',sans-serif}
dialog strong{display:block;font-size:16px;color:#7a6416;margin:0 0 14px}
dialog .source-note{margin:0 0 20px}
dialog a#original{font-size:13.5px;font-weight:700;color:#7a6416;border-bottom:1px solid var(--gold);font-family:-apple-system,'PingFang SC',sans-serif}
#close{position:absolute;top:16px;right:18px;width:34px;height:34px;border:1px solid var(--line);background:var(--white);color:var(--muted);font-size:18px;line-height:1;transition:.2s}
#close:hover{color:#7a6416;border-color:var(--gold)}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .hero-inner{grid-template-columns:1fr;padding:52px 5%;gap:44px}
  .hero-visual{order:-1}
  .visual-panel{width:min(100%,320px)}
  .about{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px}
  .site-nav{display:none}
  .count{margin-left:0;width:100%}
}