/* ==========================================================================
   Aya 官网样式
   色板取自 App 设计系统 ColorTokens.HomeJournal，保持品牌一致。
   ========================================================================== */

:root {
  --bg-cream: #FFF8EF;
  --paper: #FFFDF8;
  --ink: #6B5B4F;
  --ink-soft: #A89688;
  --pink: #F7C8D8;
  --pink-deep: #E89AB0;
  --lavender: #D9CCF0;
  --lavender-deep: #A88BD8;
  --mint: #BDE8DC;
  --mint-deep: #5FB49A;
  --sky: #CFE6F5;
  --sky-deep: #7A8DFF;
  --gold: #D9A25F;
  --border: #F2E4D0;
  --shadow-sm: 0 2px 10px rgba(107, 91, 79, 0.06);
  --shadow-md: 0 8px 26px rgba(107, 91, 79, 0.10);
  --radius: 22px;
  --maxw: 1080px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg-cream);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
               "Helvetica Neue", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

/* ---------- 顶部导航 ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 248, 239, 0.86);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo { display: flex; align-items: center; gap: 10px; }

.logo-mark {
  width: 32px; height: 32px;
  border-radius: 11px;
  background: linear-gradient(135deg, var(--pink-deep), var(--lavender-deep));
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

.logo-mark.small { width: 26px; height: 26px; border-radius: 9px; font-size: 13px; }

.logo-text { font-weight: 700; font-size: 18px; letter-spacing: 0.02em; }

.nav-links { display: flex; align-items: center; gap: 26px; font-size: 14px; color: var(--ink-soft); }
.nav-links a { transition: color .2s ease; }
.nav-links a:hover { color: var(--pink-deep); }

/* 顶部「联系我们」：胶囊按钮，突出显示 */
.nav-contact {
  padding: 7px 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--pink-deep), var(--lavender-deep));
  color: #fff !important;
  font-size: 13.5px;
  box-shadow: 0 4px 12px rgba(232, 154, 176, 0.30);
  transition: transform .2s ease, box-shadow .2s ease;
}
.nav-contact:hover { transform: translateY(-1px); box-shadow: 0 7px 16px rgba(232, 154, 176, 0.38); }

/* ---------- 首屏 ---------- */

.hero { padding: 72px 24px 56px; }

.hero-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.tag {
  display: inline-block;
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--pink-deep);
  background: rgba(247, 200, 216, 0.34);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 46px;
  line-height: 1.28;
  letter-spacing: -0.01em;
  margin-bottom: 18px;
}

.hero-desc {
  font-size: 16px;
  color: var(--ink-soft);
  max-width: 460px;
  margin-bottom: 28px;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  padding: 12px 24px;
  border-radius: 15px;
  border: 1.5px dashed var(--border);
  background: var(--paper);
  font-size: 14.5px;
  color: var(--ink);
  transition: border-color .2s ease, color .2s ease;
}
.btn-ghost:hover { border-color: var(--pink-deep); color: var(--pink-deep); }

.hero-points { list-style: none; display: flex; flex-wrap: wrap; gap: 10px 22px; }
.hero-points li {
  font-size: 13px;
  color: var(--ink-soft);
  display: flex;
  align-items: center;
  gap: 7px;
}
.hero-points li::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--mint-deep);
  flex-shrink: 0;
}

/* ---------- 手机样机 ---------- */

.hero-visual { position: relative; display: flex; justify-content: center; }

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(46px);
  opacity: .55;
  z-index: 0;
}
.blob-a { width: 220px; height: 220px; background: var(--pink); top: -10px; right: 30px; }
.blob-b { width: 200px; height: 200px; background: var(--lavender); bottom: 0; left: 20px; }

.phone {
  position: relative;
  z-index: 1;
  width: 256px;
  border-radius: 40px;
  background: #fff;
  border: 8px solid #F3E7D8;
  box-shadow: var(--shadow-md), 0 24px 50px rgba(107, 91, 79, 0.14);
  padding: 9px;
  overflow: hidden;
}

.phone-screen { display: block; }

/* App 首页截图：按 804×2221 原始比例展示，圆角与手机外框呼应 */
.app-shot {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 30px;
}

/* ---------- 通用区块 ---------- */

.section { padding: 76px 24px; }
.section-tint { background: rgba(255, 253, 248, 0.72); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.section-inner { max-width: var(--maxw); margin: 0 auto; }

.section-head { text-align: center; margin-bottom: 46px; }
.section-head h2 { font-size: 30px; margin-bottom: 10px; }
.section-head p { font-size: 15px; color: var(--ink-soft); }

/* ---------- 功能卡片 ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature {
  background: var(--paper);
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  padding: 26px 24px;
  box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease;
}
.feature:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }

.feature-icon {
  width: 42px; height: 42px;
  border-radius: 14px;
  margin-bottom: 16px;
}
.icon-pink { background: var(--pink); }
.icon-lavender { background: var(--lavender); }
.icon-mint { background: var(--mint); }
.icon-sky { background: var(--sky); }

.feature h3 { font-size: 16.5px; margin-bottom: 8px; }
.feature p { font-size: 14px; color: var(--ink-soft); }

/* ---------- 隐私承诺 ---------- */

.privacy-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.privacy-item {
  background: var(--paper);
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  padding: 24px;
  position: relative;
}

.privacy-num {
  font-size: 13px;
  font-weight: 700;
  color: var(--pink-deep);
  letter-spacing: .08em;
  margin-bottom: 8px;
}
.privacy-item h3 { font-size: 16.5px; margin-bottom: 8px; }
.privacy-item p { font-size: 14px; color: var(--ink-soft); }

.privacy-cta { text-align: center; margin-top: 34px; }

/* ---------- 常见问题 ---------- */

.faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }

.faq {
  background: var(--paper);
  border: 1.5px dashed var(--border);
  border-radius: 18px;
  padding: 18px 22px;
}

.faq summary {
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 600;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-size: 19px;
  color: var(--pink-deep);
  font-weight: 400;
  transition: transform .2s ease;
}
.faq[open] summary::after { content: "−"; }

.faq p { font-size: 14px; color: var(--ink-soft); margin-top: 12px; }

/* ---------- 下载引导 ---------- */

.cta { padding: 20px 24px 80px; }

.cta-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  text-align: center;
  background: linear-gradient(135deg, rgba(247, 200, 216, 0.45), rgba(217, 204, 240, 0.45));
  border-radius: 30px;
  padding: 58px 28px;
}
.cta-inner h2 { font-size: 28px; margin-bottom: 10px; }
.cta-inner p { font-size: 15px; color: var(--ink-soft); }

/* ---------- 页脚 ---------- */

.footer { border-top: 1px solid var(--border); padding: 42px 24px 52px; }

.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  text-align: center;
}

.footer-brand { display: flex; align-items: center; gap: 9px; font-weight: 700; font-size: 16px; }

.footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 22px; font-size: 14px; color: var(--ink-soft); }
.footer-links a:hover { color: var(--pink-deep); }

.footer-note { font-size: 12.5px; color: #B5A692; }
.footer-note p + p { margin-top: 4px; }

/* ---------- 隐私政策页 ---------- */

.doc { padding: 56px 24px 80px; }

.doc-inner {
  max-width: 760px;
  margin: 0 auto;
  background: var(--paper);
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 42px 38px;
}

.doc h1 { font-size: 27px; color: var(--pink-deep); text-align: center; margin-bottom: 8px; }
.doc-meta { text-align: center; font-size: 13px; color: var(--ink-soft); margin-bottom: 28px; }

.doc-lead {
  font-size: 14px;
  color: var(--ink-soft);
  background: rgba(247, 200, 216, 0.22);
  border-left: 4px solid var(--pink-deep);
  border-radius: 10px;
  padding: 15px 17px;
  margin-bottom: 26px;
}

.doc h2 {
  font-size: 17px;
  margin: 28px 0 10px;
  display: flex;
  align-items: center;
  gap: 9px;
}
.doc h2::before {
  content: "";
  width: 8px; height: 8px;
  background: var(--pink-deep);
  border-radius: 50%;
  flex-shrink: 0;
}

.doc ul { padding-left: 20px; margin-bottom: 10px; }
.doc li { font-size: 14px; color: var(--ink-soft); margin-bottom: 7px; }
.doc li::marker { color: var(--pink-deep); }
.doc p { font-size: 14px; color: var(--ink-soft); margin-bottom: 8px; }

.doc-footer {
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px dashed var(--border);
  text-align: center;
  font-size: 12.5px;
  color: #B5A692;
}

.doc-back { display: inline-block; margin-bottom: 22px; font-size: 14px; color: var(--ink-soft); }
.doc-back:hover { color: var(--pink-deep); }

/* ---------- 响应式 ---------- */

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 44px; }
  .hero-copy { text-align: center; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-points { justify-content: center; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .privacy-list { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  /* 移动端收起普通导航项，仅保留「联系我们」入口 */
  .nav-links { gap: 0; }
  .nav-links a:not(.nav-contact) { display: none; }
  .nav-inner { padding: 12px 18px; }
  .hero { padding: 46px 20px 40px; }
  .hero h1 { font-size: 34px; }
  .hero-desc { font-size: 15px; }
  .section { padding: 56px 20px; }
  .section-head h2 { font-size: 24px; }
  .grid { grid-template-columns: 1fr; }
  .cta-inner { padding: 40px 20px; }
  .cta-inner h2 { font-size: 22px; }
  .doc { padding: 34px 16px 60px; }
  .doc-inner { padding: 28px 22px; }
  .doc h1 { font-size: 22px; }

  .phone { width: 232px; border-radius: 34px; padding: 7px; border-width: 7px; }
  .app-shot { border-radius: 26px; }
}