/* ============================
   Dayora 官网首页 · styles.css
   调性：奶白 + 玫红 + 墨色，克制、温柔、有边界感
   ============================ */

:root {
  --bg: #F7F2EA;            /* 暖奶米 */
  --bg-soft: #EFE6D8;       /* 米沙 */
  --surface: #FFFFFF;
  --ink: #2A2620;           /* 深墨棕 */
  --ink-soft: #6B6055;
  --ink-muted: #9B8E7E;
  --line: #E6DBC8;
  --line-soft: #EFE6D8;

  --accent: #C8746A;        /* 主玫红，克制 */
  --accent-deep: #A85A52;
  --rose: #D9A6A0;           /* 柔粉 */
  --amber: #B5843A;          /* 墨金 */
  --ink-dark: #2A2620;

  --paper: #FBF7EE;
  --grid-bg: #FAFAF7;
  --grid-ink: #111;
  --grid-red: #D04A2E;

  --shadow: 0 24px 60px rgba(60, 40, 30, 0.08);
  --shadow-sm: 0 6px 20px rgba(60, 40, 30, 0.06);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --maxw: 1180px;
}

/* ---- reset ---- */
*,
*::before,
*::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont,
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; border: none; background: none; cursor: pointer; color: inherit; }
ul { margin: 0; padding: 0; list-style: none; }

.container {
  width: min(100% - 40px, var(--maxw));
  margin: 0 auto;
}

/* 中文衬线标题 */
.serif,
.section-title,
.hero-title,
.privacy-title,
.cta-title,
.theme-meta h3,
.feature-card h3 {
  font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
  letter-spacing: 0.01em;
}

/* ============================
   导航
   ============================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 242, 234, 0.86);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid rgba(230, 219, 200, 0.6);
}
.nav {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 68px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
}
.brand-mark {
  display: inline-flex;
  color: var(--accent);
}
.brand-text {
  font-family: "Noto Serif SC", serif;
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.04em;
}
.nav-links {
  display: flex;
  gap: 28px;
  margin-left: auto;
}
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color 0.2s ease;
  position: relative;
}
.nav-links a:hover { color: var(--accent); }
.nav-cta { margin-left: 8px; }
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
}
.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
}

/* ============================
   按钮
   ============================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  transition: transform 0.18s ease, background 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
  border: 1px solid transparent;
}
.btn-sm { padding: 9px 16px; font-size: 13px; }
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 6px 20px rgba(200, 116, 106, 0.28);
}
.btn-primary:hover {
  background: var(--accent-deep);
  transform: translateY(-1px);
  box-shadow: 0 10px 26px rgba(200, 116, 106, 0.34);
}
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover {
  border-color: var(--ink);
  transform: translateY(-1px);
}
.btn-ghost.btn-light {
  color: rgba(255, 248, 238, 0.92);
  border-color: rgba(255, 248, 238, 0.28);
}
.btn-ghost.btn-light:hover {
  border-color: rgba(255, 248, 238, 0.6);
}
.btn-lg {
  padding: 14px 26px;
  font-size: 15px;
}

/* ============================
   Hero
   ============================ */
.hero {
  padding: 80px 0 70px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -100px;
  right: -100px;
  width: 460px;
  height: 460px;
  background: radial-gradient(circle at center, rgba(217, 166, 160, 0.42), transparent 70%);
  filter: blur(8px);
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-eyebrow {
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin: 0 0 18px;
}
.hero-title {
  font-size: clamp(38px, 5.6vw, 64px);
  line-height: 1.12;
  font-weight: 700;
  margin: 0 0 20px;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.hero-title-accent {
  color: var(--accent);
  position: relative;
}
.hero-name {
  font-family: "Noto Serif SC", serif;
  font-size: 28px;
  font-weight: 700;
  margin: 0 0 14px;
  color: var(--ink);
  letter-spacing: 0.08em;
}
.hero-sub {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 460px;
  margin: 0 0 32px;
}
.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---- hero visual: 时间轴 ---- */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 540px;
  padding: 20px 0;
}
.timeline-mock {
  position: relative;
  width: 100%;
  max-width: 420px;
  padding-left: 28px;
}
.tl-line {
  position: absolute;
  left: 8px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent) 0%, var(--rose) 50%, var(--line) 100%);
  border-radius: 2px;
}
.tl-item {
  position: relative;
  margin-bottom: 18px;
}
.tl-item:last-child { margin-bottom: 0; }
.tl-dot {
  position: absolute;
  left: -27px;
  top: 6px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--surface);
  border: 3px solid var(--accent);
  box-shadow: 0 0 0 4px var(--bg);
}
.tl-dot.small {
  width: 12px;
  height: 12px;
  border-width: 2px;
  border-color: var(--rose);
  top: 8px;
  left: -25px;
}
.tl-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.22s ease;
}
.tl-card:hover { transform: translateX(2px); }
.tl-card-soft {
  background: var(--paper);
}
.tl-card-private {
  background: var(--ink);
  color: #FBF7EE;
  border-color: var(--ink);
  position: relative;
  padding-left: 36px;
}
.lock-badge {
  position: absolute;
  left: 12px;
  top: 14px;
  width: 20px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--rose);
}
.tl-private-text { color: var(--rose); font-size: 13px; }
.tl-date {
  font-size: 11px;
  color: var(--ink-muted);
  margin: 0 0 4px;
  letter-spacing: 0.04em;
}
.tl-tag {
  display: inline-block;
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 999px;
  margin-bottom: 8px;
  letter-spacing: 0.04em;
  font-weight: 600;
}
.tag-family { background: rgba(200, 116, 106, 0.14); color: var(--accent); }
.tag-work   { background: rgba(181, 132, 58, 0.14); color: var(--amber); }
.tag-self   { background: rgba(107, 96, 85, 0.12); color: var(--ink-soft); }
.tl-text {
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink);
  margin: 0 0 10px;
}
.tl-card-private .tl-text { color: rgba(255, 248, 238, 0.85); }
.tl-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.chip {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(230, 219, 200, 0.5);
  color: var(--ink-soft);
}
.chip-photo { background: rgba(200, 116, 106, 0.12); color: var(--accent); }
.chip-voice { background: rgba(181, 132, 58, 0.14); color: var(--amber); }

/* 装饰 */
.deco {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}
.deco-1 {
  top: 20px;
  right: -10px;
  width: 110px;
  height: 110px;
  background: radial-gradient(circle at 30% 30%, rgba(217, 166, 160, 0.6), transparent 70%);
  filter: blur(6px);
  z-index: 0;
}
.deco-2 {
  bottom: 10px;
  left: -20px;
  width: 160px;
  height: 160px;
  background: radial-gradient(circle at 50% 50%, rgba(200, 116, 106, 0.18), transparent 70%);
  filter: blur(8px);
  z-index: 0;
}

/* ============================
   Section 通用
   ============================ */
.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}
.kicker {
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin: 0 0 14px;
}
.kicker.light { color: var(--rose); }
.section-title {
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 700;
  margin: 0 0 14px;
  line-height: 1.25;
  letter-spacing: 0.02em;
}
.section-sub {
  font-size: 16px;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.75;
}
.hide-sm { display: inline; }

/* ============================
   产品核心
   ============================ */
.core {
  padding: 80px 0;
}
.core-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}
.core-item {
  padding: 0 8px;
  position: relative;
}
.core-item::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 24px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--accent) 0%, transparent 100%);
  opacity: 0.3;
}
.core-num {
  display: block;
  font-family: "Noto Serif SC", serif;
  font-size: 14px;
  color: var(--accent);
  letter-spacing: 0.16em;
  margin-bottom: 12px;
}
.core-item h3 {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--ink);
}
.core-item p {
  font-size: 15px;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.75;
}

/* ============================
   Features
   ============================ */
.features {
  padding: 90px 0;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 100%);
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.feature-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 30px 26px;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
  display: flex;
  flex-direction: column;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: transparent;
}
.feature-ico {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--accent);
}
.ico-timeline { background: rgba(200, 116, 106, 0.12); }
.ico-count    { background: rgba(217, 166, 160, 0.22); color: var(--accent-deep); }
.ico-photo    { background: rgba(181, 132, 58, 0.14); color: var(--amber); }
.ico-cal      { background: rgba(200, 116, 106, 0.12); color: var(--accent); }
.ico-review   { background: rgba(107, 96, 85, 0.14); color: var(--ink-soft); }
.ico-vault    { background: rgba(42, 38, 32, 0.08); color: var(--ink); }

.feature-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin: 0 0 8px;
}
.feature-card p {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.7;
}

/* ============================
   分享与故事
   ============================ */
.share {
  padding: 90px 0;
  background: var(--bg);
}
.share-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.share-text .section-title { text-align: left; }
.share-text .section-sub { text-align: left; max-width: 480px; margin-bottom: 32px; }
.share-list {
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.share-list li {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 10px;
}
.share-list .bullet {
  font-family: "Noto Serif SC", serif;
  font-size: 24px;
  color: var(--accent);
  line-height: 1;
  padding-top: 2px;
}
.share-list strong {
  display: block;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 4px;
}
.share-list p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.7;
}

/* 分享卡片叠层 */
.share-visual {
  position: relative;
  min-height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.share-card {
  position: absolute;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  width: 280px;
}
.share-card-back {
  width: 240px;
  height: 160px;
  top: 10px;
  left: 50%;
  transform: translateX(-50%) translateX(-60px) rotate(-6deg);
  background: var(--paper);
}
.share-card-mid {
  top: 60px;
  left: 50%;
  transform: translateX(-50%) translateX(40px) rotate(4deg);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.sc-tag { font-size: 11px; color: var(--ink-muted); letter-spacing: 0.06em; }
.sc-value { font-family: "Noto Serif SC", serif; font-size: 28px; font-weight: 700; color: var(--accent); }
.sc-meta { font-size: 12px; color: var(--ink-soft); }
.share-card-front {
  top: 130px;
  left: 50%;
  transform: translateX(-50%) translateX(-20px);
  padding: 20px 22px;
  z-index: 2;
  width: 300px;
}
.sc-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.sc-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: "Noto Serif SC", serif;
  font-weight: 700;
  font-size: 16px;
}
.sc-name { font-size: 14px; font-weight: 700; margin: 0; color: var(--ink); }
.sc-role { font-size: 12px; color: var(--ink-muted); margin: 2px 0 0; }
.sc-line {
  font-size: 13px;
  color: var(--ink-soft);
  margin: 0 0 14px;
  line-height: 1.6;
  border-top: 1px solid var(--line-soft);
  padding-top: 12px;
}
.sc-revoke {
  font-size: 12px;
  color: var(--accent);
  padding: 6px 12px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: transparent;
  cursor: not-allowed;
}

/* ============================
   隐私说明
   ============================ */
.privacy {
  padding: 100px 0;
  background: linear-gradient(160deg, #2A2620 0%, #3A2E24 100%);
  color: #FBF7EE;
  position: relative;
  overflow: hidden;
}
.privacy::before {
  content: "";
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle at center, rgba(200, 116, 106, 0.16), transparent 60%);
  pointer-events: none;
}
.privacy .container { position: relative; z-index: 1; text-align: center; }
.privacy-title {
  font-size: clamp(32px, 4.4vw, 52px);
  font-weight: 700;
  margin: 0 0 48px;
  line-height: 1.25;
  color: #FBF7EE;
  letter-spacing: 0.02em;
}
.privacy-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px 48px;
  max-width: 720px;
  margin: 0 auto;
  text-align: left;
}
.privacy-grid li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: rgba(251, 247, 238, 0.88);
  padding: 8px 0;
  border-bottom: 1px solid rgba(251, 247, 238, 0.08);
}
.privacy-grid li:nth-last-child(-n+2) { border-bottom: none; }
.privacy-grid .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--rose);
  flex-shrink: 0;
}

/* ============================
   主题展示
   ============================ */
.themes {
  padding: 90px 0;
  background: var(--bg);
}
.theme-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.theme-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--surface);
  transition: transform 0.24s ease, box-shadow 0.24s ease;
}
.theme-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.theme-preview {
  padding: 24px;
  height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.tp {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  align-items: center;
}
/* 主题 1：轻量关怀 */
.tp-care {
  background: linear-gradient(160deg, #FBF1EA 0%, #F4E2D6 100%);
  color: var(--ink);
}
.tp-care .tp-card {
  background: #FFFFFF;
  border-radius: 18px;
  padding: 16px 18px;
  width: 100%;
  box-shadow: 0 10px 30px rgba(200, 116, 106, 0.16);
}
.tp-care .tp-date { color: #C8746A; font-size: 11px; letter-spacing: 0.08em; margin: 0 0 6px; }
.tp-care .tp-title { font-family: "Noto Serif SC", serif; font-size: 15px; font-weight: 700; margin: 0 0 14px; color: #2A2620; }
.tp-care .tp-thumb { width: 100%; height: 36px; background: linear-gradient(90deg, #F4C8C0, #E8B4AC); border-radius: 8px; margin-bottom: 8px; }
.tp-care .tp-thumb.sm { height: 18px; width: 60%; background: #F4E2D6; }

/* 主题 2：编辑纸感 */
.tp-paper {
  background: #F5F1E6;
  background-image:
    linear-gradient(rgba(60, 50, 30, 0.04) 1px, transparent 1px);
  background-size: 100% 18px;
  color: var(--ink);
}
.tp-paper .tp-card {
  background: #FFFCF3;
  border: 1px solid #D9CFB8;
  border-radius: 4px;
  padding: 16px 18px;
  width: 100%;
  box-shadow: 0 6px 16px rgba(60, 40, 20, 0.08);
}
.tp-paper .tp-date { font-family: "Noto Serif SC", serif; color: #8A6A3A; font-size: 11px; margin: 0 0 6px; letter-spacing: 0.04em; }
.tp-paper .tp-title { font-family: "Noto Serif SC", serif; font-size: 15px; font-weight: 700; margin: 0 0 14px; color: #2A2620; }
.tp-paper .tp-thumb { width: 100%; height: 36px; background: #E8DDC0; border-radius: 2px; margin-bottom: 8px; }
.tp-paper .tp-thumb.sm { height: 18px; width: 60%; background: #D9CFB8; }

/* 主题 3：瑞士网格 */
.tp-grid {
  background: #FAFAF7;
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.04) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--grid-ink);
}
.tp-grid .tp-card {
  background: #FAFAF7;
  border-left: 3px solid var(--grid-red);
  padding: 14px 16px;
  width: 100%;
}
.tp-grid .tp-date { color: var(--grid-red); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; margin: 0 0 6px; font-weight: 700; }
.tp-grid .tp-title { font-family: "Noto Serif SC", serif; font-size: 15px; font-weight: 700; margin: 0 0 14px; color: var(--grid-ink); }
.tp-grid .tp-thumb { width: 100%; height: 36px; background: var(--grid-ink); margin-bottom: 8px; }
.tp-grid .tp-thumb.sm { height: 18px; width: 60%; background: var(--grid-red); }

.theme-meta {
  padding: 20px 22px 24px;
}
.theme-meta h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--ink);
}
.theme-meta p {
  font-size: 13px;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.65;
}

/* ============================
   CTA
   ============================ */
.cta {
  padding: 110px 0 80px;
  background: linear-gradient(160deg, #2A2620 0%, #3A2E24 100%);
  color: #FBF7EE;
  position: relative;
  overflow: hidden;
  text-align: center;
}
.cta::before {
  content: "";
  position: absolute;
  top: -80px;
  left: 50%;
  transform: translateX(-50%);
  width: 720px;
  height: 720px;
  background: radial-gradient(circle at center, rgba(217, 166, 160, 0.18), transparent 60%);
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 1;
}
.cta-title {
  font-size: clamp(32px, 4.4vw, 52px);
  font-weight: 700;
  margin: 0 0 36px;
  line-height: 1.25;
  color: #FBF7EE;
  letter-spacing: 0.02em;
}
.cta-accent { color: var(--rose); }
.cta-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 36px;
}
.cta-row .btn-primary {
  background: var(--accent);
  border-color: var(--accent);
}
.cta-row .btn-primary:hover {
  background: var(--accent-deep);
}
.download-row {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.store-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  background: rgba(251, 247, 238, 0.06);
  border: 1px solid rgba(251, 247, 238, 0.2);
  border-radius: 12px;
  color: #FBF7EE;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.18s ease;
  min-width: 190px;
}
.store-btn:hover {
  background: rgba(251, 247, 238, 0.12);
  border-color: rgba(251, 247, 238, 0.4);
  transform: translateY(-2px);
}
.store-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.store-text small {
  font-size: 11px;
  opacity: 0.7;
  letter-spacing: 0.04em;
}
.store-text strong {
  font-size: 14px;
  font-weight: 700;
}
.cta-note {
  color: rgba(251, 247, 238, 0.55);
  font-size: 12px;
  margin: 0;
}

/* ============================
   Footer
   ============================ */
.site-footer {
  background: var(--bg-soft);
  padding: 50px 0 30px;
  color: var(--ink-soft);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.footer-brand .brand { margin-bottom: 12px; }
.footer-tag {
  font-family: "Noto Serif SC", serif;
  font-size: 13px;
  color: var(--ink-muted);
  margin: 0;
  max-width: 260px;
  letter-spacing: 0.02em;
}
.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
}
.footer-nav a:hover { color: var(--accent); }
.footer-meta p { margin: 0 0 6px; font-size: 12px; color: var(--ink-muted); }
.footer-meta p:last-child {
  font-family: "Noto Serif SC", serif;
  margin-top: 10px;
  color: var(--ink-soft);
  font-style: italic;
}

/* ============================
   动效
   ============================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.in {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  .fade-in { opacity: 1; transform: none; }
}

/* ============================
   响应式
   ============================ */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { min-height: 480px; }
  .core-grid { grid-template-columns: 1fr; gap: 32px; }
  .core-item { padding: 0; }
  .core-item::before { display: none; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .share-grid { grid-template-columns: 1fr; gap: 40px; }
  .share-visual { min-height: 360px; margin-top: 20px; }
  .theme-grid { grid-template-columns: 1fr; }
  .theme-preview { height: 200px; }
}

@media (max-width: 760px) {
  .nav { height: 60px; gap: 12px; }
  .nav-links {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 16px 20px 24px;
    border-bottom: 1px solid var(--line);
    gap: 14px;
    transform: translateY(-120%);
    transition: transform 0.28s ease;
    z-index: 40;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-cta { display: none; }
  .nav-toggle { display: inline-flex; margin-left: auto; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

  .hero { padding: 50px 0 40px; }
  .hero-title { font-size: 38px; }
  .hero-name { font-size: 22px; }
  .hero-sub { font-size: 15px; }
  .hide-sm { display: none; }

  .core { padding: 60px 0; }
  .features { padding: 60px 0; }
  .feature-grid { grid-template-columns: 1fr; gap: 14px; }
  .section-head { margin-bottom: 36px; }

  .share { padding: 60px 0; }
  .share-text .section-title,
  .share-text .section-sub { text-align: center; }
  .share-list { align-items: flex-start; }

  .privacy { padding: 70px 0; }
  .privacy-grid { grid-template-columns: 1fr; gap: 0; }
  .privacy-grid li { border-bottom: 1px solid rgba(251, 247, 238, 0.08); padding: 12px 0; }

  .themes { padding: 60px 0; }
  .cta { padding: 80px 0 60px; }
  .cta-row .btn { flex: 1; min-width: 140px; justify-content: center; }
  .store-btn { width: 100%; max-width: 340px; }

  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-nav { flex-direction: row; gap: 16px; flex-wrap: wrap; }
}

@media (max-width: 420px) {
  .hero-cta-row .btn { flex: 1; justify-content: center; }
  .timeline-mock { padding-left: 22px; }
  .tl-dot { left: -22px; }
  .tl-dot.small { left: -20px; }
  .tl-line { left: 6px; }
}