/* Formusafe配方宝 官网 — 与应用同款香槟金玻璃拟态主题
   色板取自 src/frontend/App.css：--champagne #C9A96E，玻璃卡片，暖米白渐变 */
:root {
  --champagne: #C9A96E;
  --champagne-rgb: 201, 169, 110;
  --champagne-lit: #E8D5A3;
  --champagne-deep: #A8854B;

  --bg: #f9f9f9;
  --app-gradient: linear-gradient(135deg, #f3f0ea 0%, #f7f4ef 48%, #eef1f4 100%);
  --surface: #ffffff;
  --glass-bg: rgba(255, 255, 255, 0.55);
  --glass-bg-strong: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(255, 255, 255, 0.65);
  --glass-blur: 14px;

  --text: #202020;
  --text-secondary: #646464;
  --text-muted: #8d8d8d;
  --border: #e0e0e0;
  --border-hover: #cecece;

  --primary: #202020;
  --primary-dark: #000000;
  --primary-light: #f0f0f0;
  --on-primary: #ffffff;

  --green: #30a46c;
  --green-bg: #e6f6eb;
  --red: #e5484d;
  --red-bg: #feebec;

  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.03);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.10);
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
  background: var(--app-gradient);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1040px; margin: 0 auto; padding: 0 24px; }

/* ── 导航（玻璃拟态） ── */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.logo { font-size: 20px; font-weight: 700; letter-spacing: 0.5px; }
.logo-cn { margin-left: 6px; font-size: 15px; font-weight: 600; color: var(--champagne-deep); }
.nav nav { display: flex; align-items: center; gap: 28px; }
.nav a { color: var(--text-secondary); text-decoration: none; font-size: 15px; transition: color var(--transition); }
.nav a:hover { color: var(--text); }

/* ── 按钮（对齐应用 .btn-primary / .btn-outline） ── */
.btn {
  display: inline-block; font-weight: 600; text-decoration: none;
  border-radius: var(--radius-sm); cursor: pointer;
  transition: all var(--transition); position: relative;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
  padding: 10px 28px; font-size: 16px; border: none; color: var(--on-primary);
  background: linear-gradient(180deg, rgba(255,255,255,0.08) 0%, transparent 100%), var(--primary);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.15), var(--shadow-sm);
}
.btn-primary:hover {
  background: linear-gradient(180deg, rgba(255,255,255,0.10) 0%, transparent 100%), var(--primary-dark);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.12), var(--shadow-md);
  transform: translateY(-1px);
}
.btn-outline {
  padding: 10px 28px; font-size: 16px;
  border: 1px solid var(--primary); background: transparent; color: var(--primary);
}
.btn-outline:hover { background: var(--primary-light); transform: translateY(-1px); }
.btn-small { padding: 6px 18px; font-size: 14px; }
.btn-large { padding: 14px 44px; font-size: 18px; }

/* ── Hero ── */
.hero { padding: 96px 0 80px; text-align: center; }
.eyebrow {
  display: inline-block; font-size: 13px; color: var(--champagne-deep);
  background: rgba(var(--champagne-rgb), 0.12);
  border: 1px solid rgba(var(--champagne-rgb), 0.35);
  border-radius: 999px; padding: 4px 16px; margin-bottom: 24px; letter-spacing: 1px;
}
.hero h1 { font-size: 44px; line-height: 1.3; font-weight: 700; margin-bottom: 20px; }
.hero h1 .gold {
  background: linear-gradient(120deg, var(--champagne-deep) 0%, var(--champagne) 50%, var(--champagne-lit) 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.lead { font-size: 18px; color: var(--text-secondary); margin-bottom: 36px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; margin-bottom: 20px; }
.hero-trial { font-size: 15px; color: var(--text-secondary); margin-bottom: 64px; }
.hero-trial b { color: var(--champagne-deep); }

/* ── 应用界面预览（复刻向导壳：标题行 + 8 步进度条 + 内容卡 + 底栏） ── */
.app-mock {
  max-width: 900px; margin: 0 auto; text-align: left;
  background: var(--glass-bg-strong);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.app-mock-titlebar {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 16px; border-bottom: 1px solid var(--border);
}
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot:first-child { background: #ff5f57; }
.dot:nth-child(2) { background: #febc2e; }
.dot:nth-child(3) { background: #28c840; }
.app-mock-title { margin-left: 12px; font-size: 13px; color: var(--text-muted); }

.mock-wizard-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px 10px;
}
.mock-wizard-title { font-size: 16px; font-weight: 700; }
.mock-wizard-title em { font-style: normal; color: var(--champagne-deep); }
.mock-exit {
  font-size: 13px; font-weight: 600; color: var(--primary);
  border: 1px solid var(--primary); border-radius: var(--radius-sm);
  padding: 3px 12px; background: transparent;
}

/* 8 步进度条 */
.mock-steps {
  display: flex; align-items: flex-start; justify-content: center;
  padding: 6px 20px 14px; border-bottom: 1px solid var(--border);
}
.mock-step { display: flex; flex-direction: column; align-items: center; gap: 5px; position: relative; flex: 1; }
.mock-step::after {
  content: ''; position: absolute; top: 11px; left: calc(50% + 16px); right: calc(-50% + 16px);
  height: 2px; background: var(--border);
}
.mock-step:last-child::after { display: none; }
.mock-step.done::after { background: var(--primary); }
.mock-step .num {
  width: 22px; height: 22px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700;
  background: var(--border); color: var(--text-muted);
  position: relative; z-index: 1;
}
.mock-step.done .num, .mock-step.active .num { background: var(--primary); color: var(--on-primary); }
.mock-step.active .num { box-shadow: 0 0 0 3px rgba(var(--champagne-rgb), 0.4); }
.mock-step .lbl { font-size: 11px; font-weight: 600; color: var(--text-muted); white-space: nowrap; }
.mock-step.done .lbl, .mock-step.active .lbl { color: var(--text); }

/* 内容卡 */
.mock-body { padding: 20px 24px; }
.mock-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 6px 16px;
}
.mock-row {
  display: grid; grid-template-columns: 2fr 1fr 1.2fr 0.9fr;
  padding: 10px 8px; font-size: 13px; border-bottom: 1px solid var(--border);
  color: var(--text-secondary); align-items: center;
}
.mock-row:last-child { border-bottom: none; }
.mock-row.head { color: var(--text-muted); font-weight: 600; font-size: 12px; }
.mock-row .ing { color: var(--text); font-weight: 600; }
.chip {
  display: inline-block; font-size: 12px; font-weight: 600;
  padding: 2px 10px; border-radius: 999px; width: fit-content;
}
.chip-ok { color: var(--green); background: var(--green-bg); }
.chip-warn { color: var(--red); background: var(--red-bg); }

/* 底栏 */
.mock-footer {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 24px;
  background: var(--glass-bg);
  border-top: 1px solid var(--glass-border);
}
.mock-footer .btn { font-size: 13px; padding: 6px 18px; }

/* ── 通用区块 ── */
.section { padding: 88px 0; }
.section h2 { font-size: 32px; text-align: center; margin-bottom: 12px; }
.section-sub { text-align: center; color: var(--text-secondary); margin-bottom: 48px; font-size: 16px; }

/* ── 卡片（玻璃拟态） ── */
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 28px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.card:hover {
  transform: translateY(-2px); box-shadow: var(--shadow-md);
  border-color: rgba(var(--champagne-rgb), 0.55);
}
.card h3 { font-size: 18px; margin-bottom: 10px; color: var(--champagne-deep); }
.card p { font-size: 14px; color: var(--text-secondary); }

/* ── 八步向导 ── */
.steps {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  list-style: none; counter-reset: step;
}
.steps li {
  counter-increment: step;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 24px 20px 20px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.steps li:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.steps li::before {
  content: counter(step); display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 50%;
  background: linear-gradient(180deg, var(--champagne-lit) 0%, var(--champagne) 100%);
  color: #3d2f16;
  font-size: 17px; font-weight: 800; margin-bottom: 12px;
  box-shadow: 0 0 0 2px rgba(var(--champagne-rgb), 0.35), var(--shadow-sm);
}
.steps b { display: block; font-size: 16px; margin-bottom: 4px; }
.steps span { font-size: 14px; color: var(--text-secondary); }

/* ── 下载区 ── */
.download-box { text-align: center; }
.trial-highlight { font-size: 18px; margin-bottom: 24px; }
.trial-highlight b { color: var(--champagne-deep); }
.download-box .btn { margin-bottom: 16px; }
.download-note { font-size: 13px; color: var(--text-muted); }

/* ── 页脚 ── */
.footer { padding: 40px 0; border-top: 1px solid var(--border); text-align: center; }
.footer p { font-size: 14px; color: var(--text-secondary); margin-bottom: 6px; }
.footer a { color: var(--text-secondary); text-decoration: none; }
.footer a:hover { color: var(--champagne-deep); }
.footer-icp { font-size: 13px; opacity: 0.7; }

/* ── 响应式 ── */
@media (max-width: 800px) {
  .hero { padding: 64px 0 56px; }
  .hero h1 { font-size: 30px; }
  .lead { font-size: 16px; }
  .desktop-br { display: none; }
  .grid, .grid-3 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .mock-step .lbl { display: none; }
  .section { padding: 64px 0; }
  .nav nav a:not(.btn) { display: none; }
}

/* ── 产品手册页 ── */
.doc { max-width: 760px; padding-top: 64px; padding-bottom: 88px; }
.doc-head { text-align: center; margin-bottom: 56px; }
.doc-head h1 { font-size: 36px; margin-bottom: 8px; }
.doc-sub { color: var(--text-secondary); margin-bottom: 24px; }
.doc-toc { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.doc-toc a {
  font-size: 14px; font-weight: 600; text-decoration: none;
  color: var(--champagne-deep);
  background: rgba(var(--champagne-rgb), 0.12);
  border: 1px solid rgba(var(--champagne-rgb), 0.35);
  border-radius: 999px; padding: 5px 16px;
  transition: all var(--transition);
}
.doc-toc a:hover { background: rgba(var(--champagne-rgb), 0.22); }

.doc-section {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg); box-shadow: var(--shadow);
  padding: 32px 36px; margin-bottom: 28px;
  scroll-margin-top: 80px;
}
.doc-section h2 {
  font-size: 24px; text-align: left; margin-bottom: 16px;
  padding-bottom: 12px; border-bottom: 1px solid var(--border);
}
.doc-section h3 { font-size: 16px; margin: 20px 0 8px; color: var(--champagne-deep); }
.doc-section p { font-size: 15px; color: var(--text-secondary); margin-bottom: 10px; }
.doc-list { padding-left: 22px; margin-bottom: 10px; }
.doc-list li { font-size: 15px; color: var(--text-secondary); margin-bottom: 6px; }
.doc-list b, .doc-section p b { color: var(--text); }
.doc-section a { color: var(--champagne-deep); }
.doc-note {
  font-size: 13px !important; color: var(--text-muted) !important;
  background: rgba(var(--champagne-rgb), 0.1);
  border-left: 3px solid var(--champagne);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 10px 14px; margin-top: 14px;
}
.doc-version h3 { margin-top: 8px; }
.doc-tag {
  font-size: 12px; font-weight: 600; vertical-align: middle;
  color: var(--on-primary);
  background: linear-gradient(180deg, rgba(255,255,255,0.08) 0%, transparent 100%), var(--primary);
  border-radius: 999px; padding: 2px 10px; margin-left: 8px;
}

@media (max-width: 800px) {
  .doc { padding-top: 40px; }
  .doc-head h1 { font-size: 28px; }
  .doc-section { padding: 24px 20px; }
}

/* 首页卡片/下载区里的链接 */
.card a, .download-note a { color: var(--champagne-deep); text-decoration: none; font-weight: 600; }
.card a:hover, .download-note a:hover { text-decoration: underline; }

/* ── 用户协议页（eula.html） ── */
/* 未定内容占位高亮：香槟色底纹 */
.todo-fill {
  background: rgba(var(--champagne-rgb), 0.16);
  border: 1px dashed rgba(var(--champagne-rgb), 0.55);
  border-radius: 4px;
  padding: 0 4px;
  color: var(--champagne-deep);
  font-weight: 600;
}