/* ==========================================================================
   一键发布 · 产品官网（push.qishuai.vip）
   风格与 qishuai.vip 一致：暖调纸质编辑部 + 陶土橙强调色
   ========================================================================== */

:root {
  --bg: #EFE7DA;
  --sheet: #FFFFFF;
  --card: #F6F0E5;
  --card-deep: #F1E8D9;
  --ink: #211B13;
  --ink-2: #57503F;
  --muted: #8A8071;
  --line: #ECE3D2;
  --accent: #A9502C;
  --accent-deep: #8C3E1F;
  --accent-soft: #F3E2D6;
  --dark: #221B12;
  --blue: #007AFF;
  --green: #1a9e33;
  --radius-sheet: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-card: 0 1px 2px rgba(60, 42, 24, 0.05), 0 12px 32px -16px rgba(60, 42, 24, 0.18);
  --shadow-lift: 0 2px 4px rgba(60, 42, 24, 0.06), 0 20px 44px -18px rgba(60, 42, 24, 0.28);
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", "Helvetica Neue", sans-serif;
  --font-serif: Georgia, "Songti SC", "STSong", "SimSun", serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --header-bg: rgba(239, 231, 218, 0.86);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16110C;
    --sheet: #201A13;
    --card: #282117;
    --card-deep: #302820;
    --ink: #EDE5D6;
    --ink-2: #BCB09A;
    --muted: #8B8170;
    --line: #362E23;
    --accent: #D07A50;
    --accent-deep: #E08B5C;
    --accent-soft: #3A2A1F;
    --dark: #120E09;
    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.35), 0 12px 32px -16px rgba(0, 0, 0, 0.5);
    --shadow-lift: 0 2px 4px rgba(0, 0, 0, 0.4), 0 20px 44px -18px rgba(0, 0, 0, 0.65);
    --header-bg: rgba(22, 17, 12, 0.86);
  }
}

* { 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: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding-left: clamp(20px, 4.5vw, 52px);
  padding-right: clamp(20px, 4.5vw, 52px);
}

/* ───────────────── 顶部导航 ───────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--header-bg);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
  height: 64px;
}

.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.brand img { width: 28px; height: 28px; border-radius: 7px; }
.brand span { letter-spacing: -0.01em; }

.nav-links { display: flex; gap: 20px; margin-left: auto; font-size: 14px; color: var(--ink-2); }
.nav-links a { padding: 6px 0; border-bottom: 1.5px solid transparent; transition: 0.2s var(--ease); }
.nav-links a:hover { color: var(--ink); border-color: var(--accent); }

/* ───────────────── 按钮 ───────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: 0.2s var(--ease);
  white-space: nowrap;
}
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 8px 20px -12px rgba(169, 80, 44, 0.9); }
.btn-accent:hover { background: var(--accent-deep); transform: translateY(-1px); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--ink); }
.btn-sm { height: 38px; padding: 0 18px; font-size: 14px; }

/* ───────────────── Hero ───────────────── */
.hero { padding: clamp(48px, 7vw, 92px) 0 clamp(32px, 4vw, 56px); }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}

.kicker {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 14px;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(34px, 4.6vw, 54px);
  line-height: 1.24;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
}
.hero h1 em { font-style: normal; color: var(--accent); }

.hero-sub { font-size: clamp(15px, 1.5vw, 17px); color: var(--ink-2); margin: 0 0 26px; max-width: 30em; }

.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--muted);
}
.hero-meta li { display: flex; align-items: center; gap: 6px; }
.hero-meta li::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--green); }

/* 截图窗框 */
.window {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lift);
  background: var(--sheet);
}
.window-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  height: 34px;
  padding: 0 14px;
  background: var(--card-deep);
  border-bottom: 1px solid var(--line);
}
.window-bar i { width: 10px; height: 10px; border-radius: 50%; background: #DCCDB6; }
.window-bar span { margin-left: 8px; font-size: 11px; color: var(--muted); }

/* ───────────────── 通用段落 ───────────────── */
.section { padding: clamp(44px, 6vw, 84px) 0; }
.section-head { max-width: 720px; margin-bottom: clamp(24px, 3vw, 40px); }
.section-head h2 {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3.2vw, 38px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}
.section-head p { margin: 0; color: var(--ink-2); }

/* 三栏卖点 */
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.feature-card {
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
}
.feature-card .num {
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}
.feature-card h3 { margin: 0 0 8px; font-size: 18px; letter-spacing: -0.01em; }
.feature-card p { margin: 0; font-size: 14px; color: var(--ink-2); line-height: 1.7; }

/* 功能双栏 */
.feature-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: clamp(24px, 4vw, 56px);
  align-items: center;
  padding: clamp(26px, 3.5vw, 44px) 0;
  border-top: 1px solid var(--line);
}
.feature-row:nth-child(even) .feature-copy { order: 2; }
.feature-row h3 { font-family: var(--font-serif); font-size: clamp(21px, 2.4vw, 27px); margin: 0 0 12px; }
.feature-row p { margin: 0 0 10px; color: var(--ink-2); font-size: 15px; }
.feature-list { margin: 14px 0 0; padding: 0; list-style: none; }
.feature-list li { display: flex; gap: 10px; font-size: 14px; color: var(--ink-2); padding: 4px 0; }
.feature-list li::before { content: "✓"; color: var(--accent); font-weight: 700; }

/* 平台墙 */
.plat-wall { display: flex; flex-wrap: wrap; gap: 8px; }
.plat-wall span {
  font-size: 13px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--line);
  color: var(--ink-2);
}

/* 价格 */
.price-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.price-card {
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
}
.price-card.pro { border-color: var(--accent); box-shadow: var(--shadow-lift); position: relative; }
.price-card .tag {
  position: absolute;
  top: -12px;
  left: 24px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: 999px;
}
.price-card h3 { margin: 0 0 6px; font-size: 16px; letter-spacing: 0.02em; color: var(--ink-2); }
.price-card .price { font-family: var(--font-serif); font-size: 42px; font-weight: 700; line-height: 1.1; }
.price-card .price small { font-size: 15px; font-weight: 400; color: var(--muted); font-family: var(--font-sans); }
.price-card ul { list-style: none; margin: 18px 0 22px; padding: 0; font-size: 14px; }
.price-card ul li { display: flex; gap: 9px; padding: 5px 0; color: var(--ink-2); }
.price-card ul li::before { content: "✓"; color: var(--accent); font-weight: 700; }
.price-card ul li.off { color: var(--muted); }
.price-card ul li.off::before { content: "·"; color: var(--muted); }
.price-card .btn { margin-top: auto; width: 100%; }

.price-note { margin-top: 16px; font-size: 13px; color: var(--muted); }

/* 安装步骤 */
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; counter-reset: step; }
.step {
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 22px;
  box-shadow: var(--shadow-card);
  counter-increment: step;
}
.step::before {
  content: counter(step);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 12px;
}
.step h3 { margin: 0 0 8px; font-size: 15px; }
.step p { margin: 0; font-size: 13.5px; color: var(--ink-2); line-height: 1.7; }
.step code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12.5px;
  background: var(--card-deep);
  padding: 2px 6px;
  border-radius: 5px;
  word-break: break-all;
}

.download-band {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  border-radius: var(--radius-lg);
  background: var(--dark);
  color: #EDE5D6;
}
.download-band strong { font-size: 15px; }
.download-band span { font-size: 13px; color: #B7A98F; }
.download-band .btn { margin-left: auto; }

/* FAQ */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); padding: 16px 0; }
.faq summary { cursor: pointer; font-weight: 600; font-size: 15px; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; float: right; color: var(--muted); font-weight: 400; }
.faq details[open] summary::after { content: "−"; }
.faq p { margin: 10px 0 0; font-size: 14px; color: var(--ink-2); }

/* 页脚 */
.site-footer { border-top: 1px solid var(--line); padding: 40px 0 56px; margin-top: 20px; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 24px; align-items: flex-start; justify-content: space-between; }
.footer-brand { display: flex; gap: 12px; align-items: flex-start; }
.footer-brand img { width: 36px; height: 36px; border-radius: 9px; }
.footer-brand p { margin: 4px 0 0; font-size: 13px; color: var(--muted); max-width: 34em; }
.footer-links { display: flex; gap: 18px; font-size: 13px; color: var(--ink-2); }
.footer-links a:hover { color: var(--accent); }

/* 响应式 */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .grid-3, .steps { grid-template-columns: 1fr; }
  .feature-row { grid-template-columns: 1fr; }
  .feature-row:nth-child(even) .feature-copy { order: 0; }
  .price-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .download-band .btn { margin-left: 0; }
}

/* 动效：只做轻微淡入 */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}