/* FotoNest 网站 · 共用样式 v2.0
 * 设计 token 与 logo v1.2 / 产品 v1.9（整理×共享）一致 */

:root {
  --bg: #FBF8F4;
  --card: #FFFFFF;
  --warm-tint: #F5E6DC;
  --warm-tint-2: #F0E0CC;
  --brand: #C4774A;
  --brand-dark: #A66239;
  --brand-light: #E8A87C;
  --stamp-red: #8C3A30;
  --indigo: #2D4A5C;
  --indigo-subtle: #E3EAEE;
  --green: #4A8F6A;
  --green-light: #E2F0E8;
  --amber: #8A6B00;
  --amber-subtle: #FFF3D6;
  --text-1: #2C2419;
  --text-2: #6B5E52;
  --text-3: #9A8B7E;
  --border: rgba(154, 139, 126, 0.18);
  --border-strong: rgba(154, 139, 126, 0.35);
  --shadow-sm: 0 2px 8px rgba(44, 36, 25, 0.06);
  --shadow-md: 0 8px 28px rgba(44, 36, 25, 0.10);
  --shadow-lg: 0 20px 60px rgba(44, 36, 25, 0.14);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  --font-serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "STSong", Georgia, serif;
  --container: 1180px;
  --nav-height: 64px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  font-family: var(--font-sans);
  color: var(--text-1);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 顶部导航 ===== */
nav.topbar {
  position: sticky;
  top: 0;
  height: var(--nav-height);
  background: rgba(251, 248, 244, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 0.5px solid var(--border);
  z-index: 100;
  display: flex;
  align-items: center;
}
nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.brand-lockup {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}
.brand-symbol {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border-radius: 9px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #E8A87C, #C4774A);
  color: white;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 18px;
}
.brand-symbol img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}
.brand-name {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 19px;
  color: var(--text-1);
  letter-spacing: 0.5px;
}
.brand-sub {
  font-size: 10px;
  letter-spacing: 2.5px;
  color: var(--text-3);
  margin-top: 1px;
}
.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
  list-style: none;
}
.nav-links a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.15s;
}
.nav-links a:hover, .nav-links a.active { color: var(--brand); }

.nav-right { display: flex; align-items: center; gap: 16px; }
.lang-switch {
  display: flex;
  align-items: center;
  gap: 2px;
  font-size: 12px;
  color: var(--text-3);
}
.lang-switch a {
  color: var(--text-3);
  text-decoration: none;
  padding: 4px 8px;
  border-radius: 6px;
  font-weight: 500;
  transition: color 0.15s, background 0.15s;
}
.lang-switch a:hover { color: var(--brand); }
.lang-switch a.active { color: var(--text-1); background: var(--warm-tint); }
.lang-switch span { color: var(--text-3); opacity: 0.5; }

/* mobile 汉堡 */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  margin-left: 8px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-1);
  margin: 5px 0;
  border-radius: 1px;
  transition: all 0.2s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* mobile drawer */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(44, 36, 25, 0.4);
  z-index: 99;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
}
.drawer-backdrop.open { opacity: 1; visibility: visible; }
.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 280px;
  max-width: 80vw;
  background: var(--bg);
  z-index: 110;
  padding: 24px;
  transform: translateX(100%);
  transition: transform 0.25s ease-out;
  display: flex;
  flex-direction: column;
  gap: 18px;
  box-shadow: -8px 0 24px rgba(44, 36, 25, 0.1);
}
.drawer.open { transform: translateX(0); }
.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}
.drawer-close {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 22px;
  color: var(--text-2);
  padding: 4px 8px;
}
.drawer-links { display: flex; flex-direction: column; gap: 4px; list-style: none; }
.drawer-links a {
  display: block;
  padding: 12px 14px;
  color: var(--text-1);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: background 0.15s;
}
.drawer-links a:hover, .drawer-links a.active {
  background: var(--warm-tint);
  color: var(--brand);
}
.drawer-divider { height: 1px; background: var(--border); margin: 8px 0; }
.drawer-section-title {
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 0 14px;
  margin-bottom: 4px;
}

/* ===== 通用按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  text-decoration: none;
  border: none;
  transition: transform 0.1s, background 0.15s;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--brand); color: white; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-secondary {
  background: var(--card);
  color: var(--brand);
  border: 1.5px solid var(--brand);
}
.btn-secondary:hover { background: var(--warm-tint); }
.btn-ghost { background: transparent; color: var(--text-2); }
.btn-lg { padding: 14px 28px; font-size: 15px; }

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 80px 0 96px;
  background: radial-gradient(ellipse at center top, var(--warm-tint), var(--bg) 70%);
  overflow: hidden;
}
.hero-content {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
  align-items: center;
}
.hero-text h1 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 52px;
  line-height: 1.25;
  color: var(--text-1);
  margin-bottom: 18px;
  letter-spacing: -0.5px;
}
.hero-text .subtitle {
  font-size: 18px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 520px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-trust {
  margin-top: 36px;
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--text-3);
}
.hero-trust span { display: inline-flex; align-items: center; gap: 6px; }
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 460px;
}

/* Hero 三照片汇聚 */
.photos-wrap {
  position: relative;
  width: 380px;
  height: 460px;
}
.photo-card {
  position: absolute;
  background: white;
  border-radius: 10px;
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.photo-card .photo-inner {
  margin: 14px;
  border-radius: 6px;
  aspect-ratio: 1;
}
.photo-card .photo-meta {
  padding: 0 14px 14px;
  font-family: var(--font-serif);
  font-size: 11px;
  color: var(--text-3);
  text-align: center;
}
.pc-1 { width: 180px; height: 230px; left: 0; top: 60px; transform: rotate(-10deg); z-index: 1; }
.pc-1 .photo-inner { background: linear-gradient(135deg, #5A7588, #2D4A5C); }
.pc-2 { width: 180px; height: 230px; right: 0; top: 30px; transform: rotate(8deg); z-index: 2; }
.pc-2 .photo-inner { background: linear-gradient(135deg, #F5C29A, #E8A87C); }
.pc-3 { width: 220px; height: 280px; left: 50%; top: 110px; transform: translateX(-50%); z-index: 3; box-shadow: var(--shadow-lg); }
.pc-3 .photo-inner {
  background: radial-gradient(circle at 50% 40%, #FFD4A8, #C4774A 70%);
  position: relative;
}
.pc-3 .photo-inner::after {
  content: '';
  position: absolute;
  top: 30%; left: 50%;
  transform: translate(-50%, -50%);
  width: 60px; height: 60px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  box-shadow: 0 0 30px rgba(255, 255, 255, 0.6);
}
.stamp {
  position: absolute;
  bottom: 20px;
  right: 20px;
  width: 56px;
  height: 56px;
  border: 2px solid var(--stamp-red);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--stamp-red);
  font-size: 22px;
  opacity: 0.85;
  background: var(--bg);
}
.stamp::before {
  content: '';
  position: absolute;
  inset: 4px;
  border: 1px solid var(--stamp-red);
  border-radius: 50%;
}

/* ===== Section 通用 ===== */
section { padding: 80px 0; }
.section-eyebrow {
  font-size: 12px;
  letter-spacing: 4px;
  color: var(--brand);
  text-transform: uppercase;
  margin-bottom: 10px;
  text-align: center;
}
.section-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 38px;
  text-align: center;
  line-height: 1.3;
  margin-bottom: 14px;
}
.section-subtitle {
  text-align: center;
  font-size: 16px;
  color: var(--text-2);
  max-width: 640px;
  margin: 0 auto 56px;
  line-height: 1.7;
}

/* 三支柱 */
.pillars {
  background: var(--card);
  padding: 72px 0;
}
.pillar-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.pillar-card {
  padding: 32px 28px;
  border-radius: var(--radius-xl);
  border: 0.5px solid var(--border);
  background: var(--bg);
  position: relative;
}
.pillar-card .pillar-num {
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--brand);
  margin-bottom: 12px;
}
.pillar-card h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 24px;
  margin-bottom: 12px;
  line-height: 1.35;
}
.pillar-card p {
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.75;
}
.pillar-card.pillar-organize { border-top: 3px solid var(--brand); }
.pillar-card.pillar-share { border-top: 3px solid var(--indigo); }
.pillar-card.pillar-export { border-top: 3px solid var(--green); }

/* 三步流程 */
.how-it-works {
  padding: 72px 0;
}
.steps-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  position: relative;
}
.step-card {
  text-align: center;
  padding: 28px 20px;
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.step-card .step-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  background: var(--warm-tint);
}
.step-card h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 18px;
  margin-bottom: 8px;
}
.step-card p {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.7;
}
.step-arrow {
  display: none;
}

/* 6 功能网格 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.features-grid.cols-2 {
  grid-template-columns: 1fr 1fr;
}

/* 对比表 */
.compare-section {
  background: var(--indigo-subtle);
  padding: 72px 0;
}
.compare-table-wrap {
  overflow-x: auto;
  margin-top: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.compare-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  background: var(--card);
  font-size: 14px;
}
.compare-table th,
.compare-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 0.5px solid var(--border);
}
.compare-table th {
  background: var(--warm-tint);
  font-weight: 600;
  color: var(--text-1);
}
.compare-table td { color: var(--text-2); }
.compare-table .col-us {
  background: rgba(196, 119, 74, 0.06);
  color: var(--text-1);
  font-weight: 500;
}
.compare-table .yes { color: var(--green); font-weight: 600; }
.compare-table .no { color: var(--text-3); }
.compare-table .partial { color: var(--amber); }

.feature-card.fc-0 .icon-wrap { background: linear-gradient(135deg, #FDF6EC, #F5E6DC); }
.feature-card.fc-5 .icon-wrap { background: linear-gradient(135deg, #E3EAEE, #B8CDD8); }

/* 4 功能错列入口（子页仍可用 2 列） */
.feature-card {
  background: var(--card);
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  text-decoration: none;
  color: inherit;
  display: block;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.feature-card .icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 30px;
}
.feature-card.fc-1 .icon-wrap { background: linear-gradient(135deg, #FDF6EC, #F5E6DC); }
.feature-card.fc-2 .icon-wrap { background: linear-gradient(135deg, #E2F0E8, #C8E0D2); }
.feature-card.fc-3 .icon-wrap { background: linear-gradient(135deg, #F5C29A, #E8A87C); }
.feature-card.fc-4 .icon-wrap { background: linear-gradient(135deg, #E3EAEE, #C5D5DD); }
.feature-card h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 22px;
  margin-bottom: 10px;
}
.feature-card p {
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.75;
  margin-bottom: 14px;
}
.feature-card .read-more {
  color: var(--brand);
  font-size: 13px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* 用户场景 */
.scenarios {
  background: var(--card);
  padding: 80px 0;
}
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.scenario-grid.cols-2 {
  grid-template-columns: repeat(2, 1fr);
}
.scenario-card .scenario-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 14px;
}
.scenario-card .scenario-tags span {
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--warm-tint);
  color: var(--text-2);
  font-weight: 500;
}
.scenario-card.featured {
  border: 1.5px solid var(--brand);
  background: linear-gradient(180deg, var(--card), var(--bg));
}

/* 清理分类示意 */
.cleanup-categories {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
}
.cleanup-cat {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--bg);
  border-radius: var(--radius-md);
  border: 0.5px solid var(--border);
  font-size: 13px;
}
.cleanup-cat .cat-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.cleanup-cat.cat-screenshot .cat-icon { background: var(--indigo-subtle); }
.cleanup-cat.cat-docs .cat-icon { background: var(--amber-subtle); }
.cleanup-cat.cat-dup .cat-icon { background: var(--warm-tint); }
.cleanup-cat.cat-scene .cat-icon { background: var(--green-light); }
.cleanup-cat .cat-count {
  margin-left: auto;
  font-weight: 600;
  color: var(--brand);
  font-size: 12px;
}

/* 实体 ↔ 数字 双向往返 */
.media-bridge {
  padding: 72px 0;
  background: linear-gradient(180deg, var(--card) 0%, var(--bg) 100%);
}
.bridge-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 20px;
  align-items: stretch;
  margin-top: 48px;
}
.bridge-lane {
  background: var(--bg);
  border-radius: var(--radius-xl);
  padding: 28px 24px;
  border: 0.5px solid var(--border);
  position: relative;
}
.bridge-lane.to-digital { border-top: 3px solid var(--indigo); }
.bridge-lane.to-physical { border-top: 3px solid var(--brand); }
.bridge-lane .lane-dir {
  font-size: 11px;
  letter-spacing: 2px;
  font-weight: 600;
  margin-bottom: 10px;
}
.bridge-lane.to-digital .lane-dir { color: var(--indigo); }
.bridge-lane.to-physical .lane-dir { color: var(--brand); }
.bridge-lane h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 22px;
  margin-bottom: 12px;
  line-height: 1.35;
}
.bridge-lane p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 16px;
}
.bridge-lane ul {
  list-style: none;
  font-size: 13px;
  color: var(--text-2);
}
.bridge-lane ul li {
  padding-left: 20px;
  position: relative;
  margin-bottom: 8px;
  line-height: 1.6;
}
.bridge-lane ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--brand);
  font-weight: 700;
}
.bridge-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 100px;
  padding: 12px 0;
}
.bridge-hub {
  width: 88px;
  height: 88px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--warm-tint), var(--card));
  border: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 15px;
  color: var(--text-1);
  text-align: center;
  line-height: 1.3;
  box-shadow: var(--shadow-sm);
}
.bridge-arrows {
  font-size: 22px;
  color: var(--text-3);
  line-height: 1;
}
.bridge-arrows .arr-indigo { color: var(--indigo); }
.bridge-arrows .arr-brand { color: var(--brand); }
.bridge-unify {
  margin-top: 32px;
  text-align: center;
  padding: 20px 28px;
  background: var(--warm-tint);
  border-radius: var(--radius-lg);
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.75;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}
.bridge-unify strong { color: var(--text-1); }

/* 导出格式 */
.export-formats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  width: 100%;
}
.export-fmt {
  text-align: center;
  padding: 20px 12px;
  background: var(--bg);
  border-radius: var(--radius-md);
  border: 0.5px solid var(--border);
}
.export-fmt .fmt-icon { font-size: 28px; margin-bottom: 8px; }
.export-fmt h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}
.export-fmt p { font-size: 11px; color: var(--text-3); line-height: 1.5; }
.export-fmt.coming { opacity: 0.55; }
.export-fmt.coming::after {
  content: '筹备中';
  display: block;
  font-size: 10px;
  color: var(--brand);
  margin-top: 6px;
  font-weight: 600;
}
.scenario-card {
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--bg);
  border: 0.5px solid var(--border);
}
.scenario-card .quote-mark {
  font-family: var(--font-serif);
  font-size: 50px;
  color: var(--brand);
  line-height: 0.8;
  opacity: 0.5;
}
.scenario-card .who {
  font-size: 13px;
  color: var(--text-3);
  margin: 6px 0 10px;
}
.scenario-card .quote {
  font-family: var(--font-serif);
  font-size: 17px;
  color: var(--text-1);
  line-height: 1.7;
}

/* 隐私 banner */
.privacy-banner {
  background: var(--indigo-subtle);
  padding: 60px 0;
  text-align: center;
}
.privacy-banner .icon {
  width: 60px;
  height: 60px;
  background: var(--indigo);
  border-radius: 16px;
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 28px;
}
.privacy-banner h2 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 30px;
  color: var(--indigo);
  margin-bottom: 12px;
}
.privacy-banner p {
  color: var(--indigo);
  opacity: 0.85;
  max-width: 600px;
  margin: 0 auto;
  font-size: 15px;
  line-height: 1.7;
}

/* 下载 CTA */
.download-cta {
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  color: white;
  padding: 80px 0;
  text-align: center;
}
.download-cta h2 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 38px;
  margin-bottom: 14px;
}
.download-cta p { opacity: 0.92; font-size: 16px; margin-bottom: 32px; }
.download-buttons {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.download-btn {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: white;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  transition: background 0.15s;
}
.download-btn:hover { background: rgba(0, 0, 0, 0.55); }
.download-btn .store-icon { font-size: 26px; }
.download-btn .store-text { text-align: left; }
.download-btn .store-hint { font-size: 10px; opacity: 0.7; display: block; }
.download-btn .store-name { font-size: 16px; font-weight: 600; }
.download-btn.disabled { opacity: 0.5; cursor: not-allowed; }

/* Footer */
footer {
  background: var(--text-1);
  color: rgba(255, 255, 255, 0.75);
  padding: 56px 0 32px;
  font-size: 13px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
footer h4 {
  color: white;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
footer ul { list-style: none; }
footer ul li { margin-bottom: 10px; }
footer a {
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  transition: color 0.15s;
}
footer a:hover { color: white; }
footer .brand-block .brand-name { color: white; font-size: 17px; }
footer .brand-block p { margin-top: 12px; max-width: 280px; font-size: 13px; line-height: 1.7; opacity: 0.7; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
  opacity: 0.6;
}
.footer-bottom a { color: inherit; text-decoration: underline; }

/* 子页 hero */
.sub-hero {
  padding: 64px 0 48px;
  background: linear-gradient(180deg, var(--warm-tint), var(--bg));
  text-align: center;
}
.sub-hero .eyebrow {
  font-size: 12px;
  letter-spacing: 4px;
  color: var(--brand);
  margin-bottom: 14px;
}
.sub-hero h1 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 44px;
  line-height: 1.3;
  margin-bottom: 18px;
}
.sub-hero p {
  font-size: 17px;
  color: var(--text-2);
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.7;
}

/* 详情 row */
.feature-detail { padding: 64px 0; }
.detail-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  margin-bottom: 80px;
}
.detail-row.reverse { direction: rtl; }
.detail-row.reverse > * { direction: ltr; }
.detail-row h2 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 30px;
  line-height: 1.4;
  margin-bottom: 16px;
}
.detail-row .row-eyebrow {
  color: var(--brand);
  font-size: 12px;
  letter-spacing: 3px;
  margin-bottom: 10px;
}
.detail-row p {
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 14px;
}
.detail-row ul { list-style: none; margin-top: 14px; }
.detail-row ul li {
  padding-left: 26px;
  position: relative;
  margin-bottom: 10px;
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.7;
}
.detail-row ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 700;
}
.detail-visual {
  background: var(--card);
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: var(--shadow-md);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* 视觉块 */
.visual-album { background: linear-gradient(135deg, #FDF6EC, #F5E6DC); }
.visual-album .album-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  width: 100%;
}
.visual-album .album-thumb { aspect-ratio: 1; border-radius: 6px; }
.vt-1 { background: linear-gradient(135deg, #E8A87C, #C4774A); }
.vt-2 { background: linear-gradient(135deg, #9AB5A0, #4A8F6A); }
.vt-3 { background: linear-gradient(135deg, #F5C29A, #E8A87C); }
.vt-4 { background: linear-gradient(135deg, #C8B89A, #9A8B7E); }
.vt-5 { background: linear-gradient(135deg, #A8B5C2, #7B95A8); }
.vt-6 { background: linear-gradient(135deg, #F0B58A, #C4774A); }
.vt-7 { background: linear-gradient(135deg, #FFF3D6, #D4A017); }
.vt-8 { background: linear-gradient(135deg, #E2F0E8, #4A8F6A); }

.visual-restore { background: var(--card); padding: 0; position: relative; }
.visual-restore .before-after {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: var(--radius-xl);
  overflow: hidden;
}
.va-before, .va-after { position: absolute; inset: 0; }
.va-before { background: linear-gradient(135deg, #E8C599, #C8AB7A); clip-path: inset(0 50% 0 0); }
.va-before::after {
  content: '';
  position: absolute;
  top: 30%;
  left: 15%;
  width: 25%;
  height: 1px;
  background: rgba(60, 40, 20, 0.5);
  transform: rotate(-15deg);
}
.va-after { background: linear-gradient(135deg, #B5CFE2, #87A5C2); clip-path: inset(0 0 0 50%); }
.va-divider {
  position: absolute;
  top: 0; bottom: 0;
  left: 50%;
  width: 3px;
  background: white;
}
.va-divider::after {
  content: '⇔';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 44px; height: 44px;
  background: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  color: var(--text-1);
  font-size: 18px;
}
.va-label {
  position: absolute;
  top: 16px;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
}
.va-label.before { left: 16px; background: rgba(0,0,0,0.55); color: white; }
.va-label.after { right: 16px; background: var(--green); color: white; }

.visual-people {
  background: linear-gradient(135deg, var(--bg), var(--warm-tint));
  flex-direction: column;
  gap: 18px;
}
.face-circle {
  width: 80px; height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 32px;
  box-shadow: var(--shadow-sm);
}
.face-row { display: flex; gap: 14px; justify-content: center; }
.face-name {
  text-align: center;
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 600;
  margin-top: 6px;
}
.face-name-sub { font-size: 11px; color: var(--text-3); }
.face-item { width: 80px; }

.visual-print { background: linear-gradient(135deg, #F5E6DC, #E8C599); }
.print-stack {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  width: 100%;
}
.print-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
  width: 100%;
  padding: 0 24px;
}
.print-thumb { aspect-ratio: 1; border-radius: 4px; position: relative; }
.print-thumb .badge {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  color: white;
  font-size: 9px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.print-thumb .badge.printed { background: var(--green); }
.print-thumb .badge.similar { background: rgba(74, 143, 106, 0.55); }

/* 合规 / 帮助 */
.legal-content { max-width: 760px; margin: 0 auto; padding: 0 24px; }
.legal-content h2 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 24px;
  margin: 48px 0 14px;
  color: var(--text-1);
}
.legal-content h2:first-of-type { margin-top: 0; }
.legal-content h3 { font-weight: 600; font-size: 17px; margin: 28px 0 10px; color: var(--text-1); }
.legal-content p { color: var(--text-2); font-size: 15px; line-height: 1.85; margin-bottom: 16px; }
.legal-content ul { list-style: none; margin-bottom: 16px; }
.legal-content ul li {
  padding-left: 22px;
  position: relative;
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 8px;
}
.legal-content ul li::before {
  content: '·';
  position: absolute;
  left: 8px;
  color: var(--brand);
  font-weight: 700;
  font-size: 18px;
}
.legal-content .updated {
  font-size: 13px;
  color: var(--text-3);
  margin-bottom: 36px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.legal-content .legal-toc {
  background: var(--warm-tint);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin-bottom: 32px;
  font-size: 14px;
}
.legal-content .legal-toc ol {
  margin: 10px 0 0 20px;
  color: var(--text-2);
  line-height: 1.9;
}
.legal-content .legal-toc a { color: var(--brand); text-decoration: none; }
.legal-content .legal-toc a:hover { text-decoration: underline; }
.legal-content .store-note {
  background: var(--indigo-subtle);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-size: 13px;
  color: var(--indigo);
  margin-bottom: 28px;
  line-height: 1.7;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin: 32px 0 48px;
}
.support-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 0.5px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.support-card h3 {
  font-family: var(--font-serif);
  font-size: 18px;
  margin-bottom: 10px;
}
.support-card p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 12px;
}
.support-card .contact-line {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-1);
}
.support-card a { color: var(--brand); }
.support-store-urls {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin-bottom: 32px;
  font-size: 13px;
}
.support-store-urls code {
  font-family: ui-monospace, Menlo, monospace;
  font-size: 12px;
  background: var(--bg);
  padding: 2px 6px;
  border-radius: 4px;
  word-break: break-all;
}
@media (max-width: 880px) {
  .support-grid { grid-template-columns: 1fr; }
}
.legal-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 13px;
}
.legal-content th, .legal-content td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.legal-content th {
  background: var(--warm-tint);
  font-weight: 600;
  color: var(--text-1);
}
.legal-content td { color: var(--text-2); }

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--card);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.faq-q {
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: var(--text-1);
  font-size: 15px;
}
.faq-q:hover { background: var(--warm-tint); }
.faq-q .arrow { color: var(--brand); font-weight: 700; transition: transform 0.2s; }
.faq-item.open .faq-q .arrow { transform: rotate(180deg); }
.faq-a {
  padding: 0 24px 20px;
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.8;
  display: none;
}
.faq-item.open .faq-a { display: block; }

/* 关于我们 */
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 40px 0 60px;
}
.value-card {
  background: var(--card);
  padding: 28px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.value-card .num {
  font-family: var(--font-serif);
  font-size: 38px;
  color: var(--brand);
  margin-bottom: 8px;
  line-height: 1;
}
.value-card h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 17px;
  margin-bottom: 8px;
}
.value-card p { color: var(--text-2); font-size: 13px; line-height: 1.75; }
.info-block {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  margin-bottom: 16px;
}
.info-block dt {
  font-size: 12px;
  color: var(--text-3);
  margin-bottom: 4px;
  letter-spacing: 0.5px;
}
.info-block dd { font-size: 15px; color: var(--text-1); margin-bottom: 16px; }
.info-block dd:last-child { margin-bottom: 0; }

/* 邀请落地页 join/{code} */
.join-page { padding: 60px 0; min-height: calc(100vh - var(--nav-height)); }
.join-card {
  max-width: 480px;
  margin: 0 auto;
  background: var(--card);
  border-radius: var(--radius-xl);
  padding: 40px 32px;
  box-shadow: var(--shadow-md);
  text-align: center;
}
.join-avatar {
  width: 80px; height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, #E8A87C, #C4774A);
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 700;
}
.join-headline {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 22px;
  margin-bottom: 8px;
}
.join-family { font-size: 14px; color: var(--text-3); margin-bottom: 28px; }
.join-code-block {
  background: var(--warm-tint);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 24px;
}
.join-code-label { font-size: 12px; color: var(--text-3); margin-bottom: 8px; }
.join-code {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 32px;
  font-weight: 600;
  color: var(--text-1);
  letter-spacing: 4px;
}
.join-promise {
  text-align: left;
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.7;
  background: var(--indigo-subtle);
  padding: 16px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
}
.join-promise strong { color: var(--indigo); }
.join-divider {
  font-size: 11px;
  color: var(--text-3);
  margin: 20px 0;
  position: relative;
}
.join-divider::before, .join-divider::after {
  content: '';
  display: inline-block;
  width: 30%;
  height: 1px;
  background: var(--border);
  vertical-align: middle;
  margin: 0 10px;
}

/* 响应式 */
@media (max-width: 880px) {
  .nav-links { display: none; }
  .nav-right .btn { display: none; }
  .hamburger { display: block; }
  .hero-content { grid-template-columns: 1fr; gap: 40px; }
  .hero-text h1 { font-size: 36px; }
  .features-grid,
  .features-grid.cols-2 { grid-template-columns: 1fr; }
  .pillar-grid { grid-template-columns: 1fr; }
  .steps-row { grid-template-columns: 1fr; }
  .scenario-grid,
  .scenario-grid.cols-2 { grid-template-columns: 1fr; }
  .export-formats { grid-template-columns: 1fr; }
  .bridge-flow {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .bridge-center {
    flex-direction: row;
    min-width: 0;
    padding: 8px 0;
  }
  .bridge-arrows { display: flex; gap: 16px; }
  .detail-row { grid-template-columns: 1fr; }
  .detail-row.reverse { direction: ltr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .section-title { font-size: 30px; }
  .sub-hero h1 { font-size: 32px; }
  .photos-wrap { width: 320px; height: 400px; margin: 0 auto; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 56px 0 64px; }
  .download-cta { padding: 60px 0; }
  .download-cta h2 { font-size: 28px; }
}