/* ============================================================
   Bechample GmbH — 官网设计系统
   字体：Noto Serif SC（标题/人文衬线）· Noto Sans SC（正文）· Manrope（拉丁/数字）
   配色：三套可在 Tweaks 中实时切换（暖橘炭 / 陶土 / 墨绿）
   ============================================================ */

/* ---------- 配色 A：暖橘炭（默认） ---------- */
:root,
:root[data-palette="warm"] {
  --bg:#FAF7F1;
  --surface:#FFFFFF;
  --surface-2:#F2ECE2;
  --ink:#1C1D1E;
  --ink-soft:#5E5B54;
  --ink-faint:#938F86;
  --line:rgba(28,29,30,.10);
  --line-strong:rgba(28,29,30,.18);
  --accent:#CC7C42;
  --accent-deep:#B0682F;
  --accent-tint:#F6E8D9;
  --on-accent:#FFFFFF;
  --charcoal:#1F2021;
  --charcoal-soft:#2B2D2F;
  --on-charcoal:#F2EFE9;
  --on-charcoal-soft:rgba(242,239,233,.62);
}

/* ---------- 配色 B：陶土 ---------- */
:root[data-palette="clay"] {
  --bg:#F4EDE4;
  --surface:#FCF8F2;
  --surface-2:#EADFD1;
  --ink:#2A241F;
  --ink-soft:#6B6055;
  --ink-faint:#9A8E7F;
  --line:rgba(42,36,31,.12);
  --line-strong:rgba(42,36,31,.20);
  --accent:#B97257;
  --accent-deep:#9E5C43;
  --accent-tint:#EEDFD4;
  --on-accent:#FFFFFF;
  --charcoal:#251F1B;
  --charcoal-soft:#322A25;
  --on-charcoal:#F2EAE1;
  --on-charcoal-soft:rgba(242,234,225,.62);
}

/* ---------- 配色 C：墨绿 ---------- */
:root[data-palette="moss"] {
  --bg:#F0F3EE;
  --surface:#FBFCF9;
  --surface-2:#E2E8DC;
  --ink:#1C231E;
  --ink-soft:#586055;
  --ink-faint:#869083;
  --line:rgba(28,35,30,.11);
  --line-strong:rgba(28,35,30,.19);
  --accent:#5A8364;
  --accent-deep:#456A4E;
  --accent-tint:#DEE9DD;
  --on-accent:#FFFFFF;
  --charcoal:#1A211C;
  --charcoal-soft:#262E27;
  --on-charcoal:#EEF2EB;
  --on-charcoal-soft:rgba(238,242,235,.62);
}

/* ---------- 字体变量 ---------- */
:root {
  --font-display:"Noto Serif SC", Georgia, serif;
  --font-sans:"Noto Sans SC", system-ui, -apple-system, sans-serif;
  --font-latin:"Manrope", system-ui, sans-serif;
  --maxw:1180px;
  --radius:18px;
  --radius-sm:12px;
}
:root[data-display="sans"] { --font-display:"Noto Sans SC", system-ui, sans-serif; }

/* ---------- 重置 ---------- */
*,*::before,*::after { box-sizing:border-box; }
html { scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body {
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.7;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  transition:background .4s ease, color .4s ease;
}
img { max-width:100%; display:block; }
a { color:inherit; }
button { font-family:inherit; }
h1,h2,h3,h4 { margin:0; font-family:var(--font-display); font-weight:600; line-height:1.18; letter-spacing:-.01em; }
p { margin:0; text-wrap:pretty; }
::selection { background:var(--accent); color:var(--on-accent); }

/* ---------- 布局工具 ---------- */
.wrap { max-width:var(--maxw); margin:0 auto; padding:0 28px; }
.section { padding:104px 0; }
.section-tight { padding:72px 0; }
.eyebrow {
  font-family:var(--font-latin);
  font-size:12px; font-weight:600;
  letter-spacing:.18em; text-transform:uppercase;
  color:var(--accent-deep);
  display:inline-flex; align-items:center; gap:10px;
}
.eyebrow::before { content:""; width:26px; height:1.5px; background:currentColor; opacity:.6; }
.lead { font-size:19px; color:var(--ink-soft); line-height:1.72; }
.center { text-align:center; }
.center .eyebrow { justify-content:center; }

/* ---------- 按钮 ---------- */
.btn {
  display:inline-flex; align-items:center; gap:.55em;
  font-family:var(--font-sans); font-weight:500; font-size:15.5px;
  padding:14px 24px; border-radius:999px;
  border:1px solid transparent; cursor:pointer; text-decoration:none;
  line-height:1; transition:transform .18s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease;
  white-space:nowrap;
}
.btn svg { width:16px; height:16px; }
.btn-primary { background:var(--accent); color:var(--on-accent); box-shadow:0 1px 2px rgba(0,0,0,.06); }
.btn-primary:hover { background:var(--accent-deep); transform:translateY(-2px); box-shadow:0 10px 24px -10px var(--accent-deep); }
.btn-ghost { background:transparent; color:var(--ink); border-color:var(--line-strong); }
.btn-ghost:hover { background:var(--surface); border-color:var(--ink); transform:translateY(-2px); }
.btn-light { background:var(--on-charcoal); color:var(--charcoal); }
.btn-light:hover { transform:translateY(-2px); box-shadow:0 12px 30px -12px rgba(0,0,0,.6); }
.btn-outline-light { background:transparent; color:var(--on-charcoal); border-color:rgba(255,255,255,.28); }
.btn-outline-light:hover { border-color:var(--on-charcoal); transform:translateY(-2px); }
.btn-lg { padding:17px 30px; font-size:16.5px; }
.btn-arrow { transition:transform .2s ease; }
.btn:hover .btn-arrow { transform:translateX(3px); }

/* ---------- 导航 ---------- */
.nav {
  position:sticky; top:0; z-index:200;
  background:color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter:saturate(160%) blur(14px);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-inner { max-width:var(--maxw); margin:0 auto; padding:15px 28px; display:flex; align-items:center; justify-content:space-between; gap:24px; }
.brand { display:flex; align-items:center; gap:11px; text-decoration:none; cursor:pointer; }
.brand img { width:30px; height:30px; }
.brand-name { font-family:var(--font-latin); font-weight:700; font-size:19px; letter-spacing:-.02em; color:var(--ink); line-height:1.05; }
.brand-name small { display:block; font-family:var(--font-sans); font-weight:400; font-size:10px; letter-spacing:.12em; color:var(--ink-faint); margin-top:1px; white-space:nowrap; }
.nav-links { display:flex; align-items:center; gap:6px; }
.nav-link {
  font-size:15px; font-weight:500; color:var(--ink-soft);
  text-decoration:none; padding:9px 15px; border-radius:999px;
  cursor:pointer; transition:color .18s, background .18s;
}
.nav-link:hover { color:var(--ink); background:var(--surface-2); }
.nav-link.active { color:var(--accent-deep); }
.nav-cta { margin-left:8px; }
.nav-toggle { display:none; background:none; border:0; cursor:pointer; padding:8px; color:var(--ink); }
.nav-toggle svg { width:26px; height:26px; }

/* ---------- 页面切换 ---------- */
.page { display:none; }
.page.active { display:block; }

/* ---------- 卡片 ---------- */
.card {
  background:var(--surface); border:1px solid var(--line);
  border-radius:var(--radius); padding:34px;
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card-link { cursor:pointer; text-decoration:none; color:inherit; display:block; }
.card-link:hover { transform:translateY(-4px); box-shadow:0 24px 50px -28px rgba(0,0,0,.30); border-color:var(--line-strong); }

/* ---------- 图片占位 ---------- */
.ph {
  position:relative; overflow:hidden;
  background-color:var(--surface-2);
  background-image:repeating-linear-gradient(135deg, rgba(0,0,0,.045) 0 1px, transparent 1px 13px);
  border:1px solid var(--line);
  border-radius:var(--radius);
  display:grid; place-items:center; min-height:200px;
}
.ph.dark { background-color:var(--charcoal-soft); background-image:repeating-linear-gradient(135deg, rgba(255,255,255,.05) 0 1px, transparent 1px 13px); }
.ph-tag {
  font-family:var(--font-latin); font-size:11.5px; font-weight:600;
  letter-spacing:.1em; text-transform:uppercase; color:var(--ink-faint);
  background:var(--bg); border:1px solid var(--line);
  padding:6px 13px; border-radius:999px;
}
.ph.dark .ph-tag { background:var(--charcoal); color:var(--on-charcoal-soft); border-color:rgba(255,255,255,.14); }

/* ---------- 页脚 ---------- */
.footer { background:var(--charcoal); color:var(--on-charcoal); padding:72px 0 36px; }
.footer a { color:var(--on-charcoal-soft); text-decoration:none; transition:color .18s; }
.footer a:hover { color:var(--on-charcoal); }
.footer-grid { display:grid; grid-template-columns:1.6fr 1fr 1fr 1.2fr; gap:40px; }
.footer-brand img { width:34px; height:34px; margin-bottom:16px; }
.footer-wordmark { font-family:var(--font-latin); font-weight:800; font-size:24px; letter-spacing:-.02em; color:var(--on-charcoal); margin-bottom:16px; }
.footer h5 { font-family:var(--font-latin); font-size:12px; font-weight:700; letter-spacing:.14em; text-transform:uppercase; color:var(--on-charcoal-soft); margin:0 0 18px; }
.footer ul { list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:11px; font-size:15px; }
.footer-legal {
  margin-top:52px; padding-top:26px; border-top:1px solid rgba(255,255,255,.12);
  display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:18px;
  font-size:13.5px; color:var(--on-charcoal-soft);
}
.footer-legal-links { display:flex; flex-wrap:wrap; gap:22px; }
.footer-legal-links a { font-weight:500; color:var(--on-charcoal); }
.footer-legal-links a::before { content:"§"; margin-right:6px; opacity:.4; font-weight:400; }
.footer-legal-links a.nolaw::before { content:"⚙"; }

/* ---------- 表单 ---------- */
.field { display:flex; flex-direction:column; gap:8px; margin-bottom:20px; }
.field label { font-size:14px; font-weight:500; color:var(--ink-soft); }
.field label .req { color:var(--accent-deep); }
.field input, .field textarea {
  font-family:inherit; font-size:16px; color:var(--ink);
  background:var(--surface); border:1px solid var(--line-strong);
  border-radius:var(--radius-sm); padding:14px 16px; width:100%;
  transition:border-color .18s, box-shadow .18s; resize:vertical;
}
.field input:focus, .field textarea:focus { outline:none; border-color:var(--accent); box-shadow:0 0 0 3px var(--accent-tint); }
.field.invalid input, .field.invalid textarea { border-color:#C0392B; box-shadow:0 0 0 3px rgba(192,57,43,.12); }
.field-err { font-size:13px; color:#C0392B; display:none; }
.field.invalid .field-err { display:block; }

.consent { display:flex; gap:12px; align-items:flex-start; margin:6px 0 22px; }
.consent input { appearance:none; -webkit-appearance:none; flex:0 0 auto; width:22px; height:22px; margin-top:1px; border:1.5px solid var(--line-strong); border-radius:6px; background:var(--surface); cursor:pointer; position:relative; transition:.15s; }
.consent input:checked { background:var(--accent); border-color:var(--accent); }
.consent input:checked::after { content:""; position:absolute; left:7px; top:3px; width:5px; height:10px; border:solid var(--on-accent); border-width:0 2px 2px 0; transform:rotate(42deg); }
.consent.invalid input { border-color:#C0392B; box-shadow:0 0 0 3px rgba(192,57,43,.12); }
.consent label { font-size:13.5px; color:var(--ink-soft); line-height:1.55; cursor:pointer; }
.consent label a { color:var(--accent-deep); text-decoration:underline; text-underline-offset:2px; }
.form-note { font-size:13px; color:var(--ink-faint); margin-top:6px; display:flex; align-items:flex-start; gap:8px; }
.form-success { display:none; padding:28px; background:var(--accent-tint); border:1px solid var(--accent); border-radius:var(--radius); }
.form-success.show { display:block; animation:fadeUp .4s ease both; }
.form-error { display:none; margin-top:14px; padding:12px 14px; font-size:14px; color:#9B2C1E; background:rgba(192,57,43,.08); border:1px solid rgba(192,57,43,.3); border-radius:var(--radius-sm); }

/* ---------- Cookie 横幅 ---------- */
.cookie {
  position:fixed; left:16px; right:16px; bottom:16px; z-index:300;
  max-width:760px; margin:0 auto;
  background:var(--surface); border:1px solid var(--line-strong);
  border-radius:var(--radius); padding:24px 26px;
  box-shadow:0 24px 60px -20px rgba(0,0,0,.35);
  display:none;
}
.cookie.show { display:block; animation:cookieIn .45s cubic-bezier(.2,.8,.3,1); }
@keyframes cookieIn { from { transform:translateY(24px); } to { transform:none; } }
.cookie h4 { font-size:18px; margin-bottom:8px; }
.cookie p { font-size:14.5px; color:var(--ink-soft); margin-bottom:18px; }
.cookie p a { color:var(--accent-deep); text-decoration:underline; text-underline-offset:2px; }
.cookie-actions { display:flex; gap:12px; flex-wrap:wrap; }
.cookie-actions .btn { flex:1 1 auto; justify-content:center; min-width:150px; }
.cookie-prefs { margin:4px 0 18px; display:none; border-top:1px solid var(--line); padding-top:16px; }
.cookie-prefs.show { display:block; }
.cookie-pref { display:flex; align-items:flex-start; justify-content:space-between; gap:16px; padding:12px 0; border-bottom:1px solid var(--line); }
.cookie-pref:last-child { border-bottom:0; }
.cookie-pref-txt strong { font-size:14.5px; display:block; }
.cookie-pref-txt span { font-size:13px; color:var(--ink-faint); }
/* 小开关 */
.switch { position:relative; flex:0 0 auto; width:44px; height:26px; }
.switch input { opacity:0; width:0; height:0; }
.switch .track { position:absolute; inset:0; background:var(--line-strong); border-radius:999px; transition:.2s; cursor:pointer; }
.switch .track::before { content:""; position:absolute; left:3px; top:3px; width:20px; height:20px; background:#fff; border-radius:50%; transition:.2s; box-shadow:0 1px 3px rgba(0,0,0,.25); }
.switch input:checked + .track { background:var(--accent); }
.switch input:checked + .track::before { transform:translateX(18px); }
.switch input:disabled + .track { opacity:.5; cursor:not-allowed; }

/* ---------- 法律占位页 ---------- */
.legal { max-width:760px; }
.legal h1 { font-size:38px; margin-bottom:8px; }
.legal .legal-de { font-family:var(--font-sans); font-weight:400; color:var(--ink-faint); font-size:17px; }
.legal h3 { font-size:20px; margin:38px 0 12px; }
.legal p { color:var(--ink-soft); margin-bottom:14px; }
.legal .placeholder-note { background:var(--surface-2); border:1px dashed var(--line-strong); border-radius:var(--radius-sm); padding:16px 18px; font-size:14px; color:var(--ink-soft); margin-bottom:30px; }
.legal .email-img { display:inline-block; height:1.25em; width:auto; vertical-align:-0.22em; }

/* ============================================================
   Tweaks 面板
   ============================================================ */
.twk {
  position:fixed; right:18px; bottom:18px; z-index:2147483646; width:260px;
  background:color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter:saturate(160%) blur(20px); -webkit-backdrop-filter:saturate(160%) blur(20px);
  border:1px solid var(--line-strong); border-radius:16px;
  box-shadow:0 18px 50px -18px rgba(0,0,0,.4);
  font-family:var(--font-sans); color:var(--ink);
  overflow:hidden;
}
.twk-hd { display:flex; align-items:center; justify-content:space-between; padding:13px 12px 13px 16px; border-bottom:1px solid var(--line); }
.twk-hd b { font-size:13px; font-weight:600; }
.twk-close { background:none; border:0; cursor:pointer; color:var(--ink-faint); font-size:13px; width:24px; height:24px; border-radius:6px; }
.twk-close:hover { background:var(--surface-2); color:var(--ink); }
.twk-body { padding:16px; }
.twk-label { font-family:var(--font-latin); font-size:10.5px; font-weight:700; letter-spacing:.1em; text-transform:uppercase; color:var(--ink-faint); margin-bottom:10px; }
.twk-palettes { display:flex; flex-direction:column; gap:8px; }
.twk-opt { display:flex; align-items:center; gap:12px; width:100%; padding:9px 11px; border:1px solid var(--line); border-radius:10px; background:var(--surface); cursor:pointer; font-family:inherit; font-size:13.5px; color:var(--ink); transition:.15s; }
.twk-opt:hover { border-color:var(--line-strong); }
.twk-opt-active { border-color:var(--accent); box-shadow:0 0 0 2px var(--accent-tint); }
.twk-sw { display:flex; flex:0 0 auto; }
.twk-sw span { width:16px; height:16px; border-radius:50%; border:1.5px solid var(--surface); margin-left:-6px; box-shadow:0 0 0 1px var(--line); }
.twk-sw span:first-child { margin-left:0; }
.twk-opt-name { font-weight:500; }
.twk-seg { display:flex; gap:4px; padding:3px; background:var(--surface-2); border-radius:10px; }
.twk-seg-btn { flex:1; border:0; background:transparent; padding:8px 6px; border-radius:7px; font-family:inherit; font-size:13px; color:var(--ink-soft); cursor:pointer; transition:.15s; }
.twk-seg-btn.active { background:var(--surface); color:var(--ink); font-weight:600; box-shadow:0 1px 3px rgba(0,0,0,.1); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:920px) {
  .footer-grid { grid-template-columns:1fr 1fr; gap:34px; }
}
@media (max-width:760px) {
  body { font-size:16px; }
  .section { padding:72px 0; }
  .nav-links {
    position:absolute; top:100%; left:0; right:0;
    flex-direction:column; align-items:stretch; gap:2px;
    background:var(--bg); border-bottom:1px solid var(--line);
    padding:14px 20px 22px; display:none;
  }
  .nav-links.open { display:flex; }
  .nav-link { padding:13px 16px; }
  .nav-cta { margin:8px 0 0; text-align:center; justify-content:center; }
  .nav-toggle { display:inline-flex; }
  .footer-grid { grid-template-columns:1fr; gap:30px; }
  .cookie-actions .btn { flex-basis:100%; }
}