/* =========================================================
   YPPAH 官网样式 · 粉白主题
   ========================================================= */

:root {
  --bg: #fff7f9;
  --card: #ffffff;
  --card-2: #fff0f4;
  --line: rgba(214, 106, 143, .20);
  --line-soft: rgba(214, 106, 143, .12);
  --text: #3b2431;
  --muted: #96687c;
  --faint: #c9a6b6;
  --pink: #ec5f8f;
  --pink-deep: #d9447a;
  --pink-soft: rgba(236, 95, 143, .10);
  --serif: "Songti SC", "STSong", "Noto Serif SC", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  background-image:
    radial-gradient(1100px 500px at 75% -5%, rgba(236, 95, 143, .10), transparent 60%),
    radial-gradient(900px 500px at -10% 20%, rgba(236, 95, 143, .06), transparent 55%);
  background-attachment: fixed;
  color: var(--text);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a, button, summary { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
::selection { background: rgba(236, 95, 143, .22); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
section[id] { scroll-margin-top: 88px; }

/* ---------- 顶栏 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 247, 249, .85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-soft);
}
.header-in { height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.logo { font-family: var(--mono); font-weight: 700; letter-spacing: .42em; color: var(--pink); font-size: 15px; }
.nav { display: flex; gap: 28px; }
.nav a { color: var(--muted); font-size: 14.5px; transition: color .2s; }
.nav a:hover { color: var(--text); }
.nav-cta {
  font-size: 13.5px; color: var(--pink);
  border: 1px solid rgba(236, 95, 143, .45);
  padding: 7px 16px; border-radius: 999px; transition: .2s;
}
.nav-cta:hover { background: var(--pink-soft); }

/* ---------- Hero ---------- */
.hero { padding: 112px 24px 72px; }
.eyebrow {
  font-family: var(--mono); font-size: 12px; letter-spacing: .34em;
  color: var(--pink); text-transform: uppercase; margin-bottom: 18px;
}
.hero h1 {
  font-family: var(--serif); font-weight: 600;
  font-size: clamp(2.1rem, 5.4vw, 3.5rem);
  line-height: 1.24; letter-spacing: .02em;
}
.hero-sub { color: var(--muted); font-size: 16.5px; max-width: 680px; margin-top: 22px; }
.hero-sub strong { color: var(--text); font-weight: 600; }

/* ---------- 区块 ---------- */
.section { padding: 88px 0; }
.sec-head { margin-bottom: 44px; }
.sec-head h2 { font-family: var(--serif); font-size: clamp(1.7rem, 3.6vw, 2.4rem); font-weight: 600; letter-spacing: .03em; }
.sec-head > p:last-child { color: var(--muted); margin-top: 12px; font-size: 15.5px; }

/* ---------- 指南卡片 ---------- */
#guides { display: flex; flex-direction: column; gap: 36px; }
.guide-card {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--card-2), var(--card));
  border-radius: 22px; overflow: hidden;
}
.guide-head { padding: 32px 32px 26px; border-bottom: 1px solid var(--line-soft); position: relative; }
.guide-title-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.guide-title { font-family: var(--serif); font-size: 1.75rem; font-weight: 600; letter-spacing: .02em; }
.badge {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .16em;
  padding: 5px 12px; border-radius: 999px; white-space: nowrap;
}
.badge.live { color: var(--pink); border: 1px solid rgba(236, 95, 143, .45); background: var(--pink-soft); }
.badge.coming { color: #7c5567; border: 1px solid rgba(214, 106, 143, .35); background: #f9edf2; }
.guide-intro { color: var(--muted); margin-top: 14px; font-size: 15px; max-width: 640px; }
.toggle-all {
  position: absolute; top: 32px; right: 32px;
  font-family: var(--mono); font-size: 12px; color: var(--muted);
  border: 1px solid var(--line); background: #fff;
  padding: 8px 14px; border-radius: 999px; cursor: pointer; transition: .2s;
}
.toggle-all:hover { color: var(--pink); border-color: rgba(236, 95, 143, .5); }

/* ---------- 章节目录 ---------- */
.chapters { padding: 10px 32px 26px; }
.guide-body[hidden] { display: none; }
.chapter { border-bottom: 1px solid var(--line-soft); }
.chapter:last-child { border-bottom: none; }
.chapter summary {
  list-style: none; cursor: pointer; user-select: none;
  display: flex; align-items: baseline; gap: 14px; padding: 18px 0;
}
.chapter summary::-webkit-details-marker { display: none; }
.marker {
  font-family: var(--mono); color: var(--pink); font-size: 15px;
  width: 18px; text-align: center; flex: none; line-height: 1.4;
  transition: transform .2s;
}
details[open] .marker { transform: rotate(45deg); }
.ch-title { font-size: 15.5px; font-weight: 600; color: var(--text); transition: color .2s; }
.chapter summary:hover .ch-title { color: var(--pink); }
.ch-body { padding: 2px 0 20px 32px; }
.subs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.sub-chip {
  font-size: 12px; color: #8d5f72;
  background: #fbeef3; border: 1px solid var(--line-soft);
  padding: 3px 10px; border-radius: 999px;
}
.ch-intro { color: var(--muted); font-size: 14px; line-height: 1.8; max-width: 760px; }

/* ---------- 3.0 待发布 ---------- */
.v3-teaser {
  margin-top: 4px; text-align: center;
  border: 1px dashed rgba(214, 106, 143, .35); border-radius: 16px;
  background: #fffafc; padding: 40px 16px 44px;
}
.v3-title { font-family: var(--serif); font-size: 1.35rem; font-weight: 600; }
.v3-sub { margin-top: 10px; color: var(--muted); font-size: 14.5px; }

/* ---------- 购买与服务 ---------- */
.svc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.svc-card {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--card-2), var(--card));
  border-radius: 22px; padding: 32px;
}
.svc-no { font-family: var(--mono); color: var(--pink); font-size: 12.5px; letter-spacing: .3em; }
.svc-card h3 { font-family: var(--serif); font-size: 1.5rem; margin-top: 10px; font-weight: 600; }
.svc-desc { color: var(--muted); margin-top: 10px; font-size: 15px; }
.svc-list { margin-top: 18px; list-style: none; display: flex; flex-direction: column; gap: 10px; }
.svc-list li { color: var(--muted); font-size: 14.5px; padding-left: 20px; position: relative; }
.svc-list li::before { content: "—"; position: absolute; left: 0; color: var(--pink); }
.note-chip {
  display: inline-block; margin-top: 20px;
  font-family: var(--mono); font-size: 12.5px; letter-spacing: .1em; color: var(--pink);
  border: 1px dashed rgba(236, 95, 143, .55); background: var(--pink-soft);
  padding: 7px 14px; border-radius: 8px;
}
.buy-banner {
  display: flex; align-items: center; gap: 10px;
  background: var(--pink-soft);
  border: 1px solid rgba(236, 95, 143, .35);
  border-radius: 14px;
  padding: 14px 18px;
  color: var(--pink-deep);
  font-weight: 600; font-size: 14.5px;
  margin-bottom: 24px;
}
.buy-banner::before { content: "✦"; color: var(--pink); font-size: 15px; }
.buy-cta {
  margin-top: 40px; text-align: center;
  border: 1px solid var(--line); border-radius: 22px; padding: 44px 24px;
  background: linear-gradient(180deg, rgba(236, 95, 143, .07), transparent 55%), #fff;
}
.buy-line { font-family: var(--serif); font-size: clamp(1.15rem, 2.6vw, 1.5rem); }
.btn-pink {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 24px;
  background: linear-gradient(135deg, #ffa3bf, #ec5f8f); color: #fff;
  font-weight: 700; font-size: 15.5px; padding: 14px 30px; border-radius: 999px;
  box-shadow: 0 12px 32px rgba(236, 95, 143, .30); transition: .2s;
}
.btn-pink:hover { transform: translateY(-2px); box-shadow: 0 16px 40px rgba(236, 95, 143, .42); }
.buy-note { margin-top: 20px; color: var(--muted); font-size: 13.5px; }

/* ---------- 客户反馈 ---------- */
.fb-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; }
.fb-slot {
  position: relative; aspect-ratio: 3 / 4;
  border: 1px dashed rgba(214, 106, 143, .35); border-radius: 16px;
  background: #fffafc; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.fb-empty { display: flex; flex-direction: column; align-items: center; gap: 10px; color: var(--faint); }
.fb-ico { font-size: 22px; }
.fb-txt { font-size: 13px; }
.fb-slot img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.fb-cap {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 26px 12px 10px;
  background: linear-gradient(transparent, rgba(59, 36, 49, .72));
  font-size: 12.5px; color: rgba(255, 255, 255, .92); opacity: 0; transition: .25s;
}
.fb-slot.loaded { border-style: solid; border-color: var(--line); }
.fb-slot.loaded:hover .fb-cap { opacity: 1; }

/* ---------- 页脚 ---------- */
.site-footer { border-top: 1px solid var(--line-soft); padding: 36px 0 44px; margin-top: 40px; }
.footer-in { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: var(--faint); font-size: 13px; }
.footer-in a { color: var(--pink); }

/* ---------- 移动端 ---------- */
@media (max-width: 760px) {
  body { padding-bottom: calc(76px + env(safe-area-inset-bottom)); }
  .wrap { padding: 0 24px; }
  .hero { padding: 60px 24px 48px; }
  .eyebrow { font-size: 10.5px; letter-spacing: .2em; }
  .hero-sub { font-size: 15.5px; margin-top: 16px; }
  .section { padding: 56px 0; }
  .sec-head { margin-bottom: 26px; }
  .sec-head > p:last-child { font-size: 14.5px; }
  #guides { gap: 22px; }
  .guide-card { border-radius: 18px; }
  .guide-head { padding: 22px 24px 20px; }
  .guide-title { font-size: 1.4rem; }
  .guide-intro { font-size: 14.5px; }
  .chapters { padding: 4px 24px 16px; }
  .chapter summary { padding: 16px 0; gap: 10px; min-height: 48px; align-items: center; }
  .ch-title { font-size: 15px; }
  .ch-body { padding: 0 0 16px 28px; }
  .sub-chip { font-size: 11.5px; }
  .ch-intro { font-size: 13.5px; line-height: 1.75; }
  .v3-teaser { padding: 32px 16px 36px; }
  .v3-title { font-size: 1.2rem; }
  .svc-grid { grid-template-columns: 1fr; gap: 16px; }
  .svc-card { padding: 26px 24px; border-radius: 18px; }
  .svc-card h3 { font-size: 1.3rem; }
  .buy-banner { padding: 12px 16px; font-size: 14px; margin-bottom: 20px; }
  .buy-cta { padding: 36px 24px; border-radius: 18px; }
  .btn-pink { width: 100%; justify-content: center; }
  .fb-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .toggle-all { position: static; margin-top: 14px; display: inline-block; }
  .nav { display: none; }
  .footer-in { flex-direction: column; gap: 8px; }
}

/* ---------- 移动端底部导航 ---------- */
.bottom-nav { display: none; }
@media (max-width: 760px) {
  .bottom-nav {
    display: flex; align-items: stretch; gap: 4px;
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
    background: rgba(255, 255, 255, .94);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-top: 1px solid var(--line-soft);
    padding: 7px 10px calc(7px + env(safe-area-inset-bottom));
  }
  .bottom-nav a {
    flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 1px; color: var(--muted); font-size: 10.5px;
    padding: 4px 0; border-radius: 12px; min-height: 44px; transition: background .15s;
  }
  .bottom-nav a:active { background: var(--pink-soft); }
  .bn-ico { font-size: 15px; line-height: 1.25; color: var(--pink); }
  .bottom-nav a.bn-cta {
    flex: 1.5; flex-direction: row; gap: 5px; align-self: center;
    background: linear-gradient(135deg, #ffa3bf, #ec5f8f); color: #fff;
    font-size: 12.5px; font-weight: 700; border-radius: 999px;
    padding: 11px 12px; min-height: 44px; margin: 0 2px;
    box-shadow: 0 6px 18px rgba(236, 95, 143, .35);
  }
  .bottom-nav a.bn-cta:active { background: linear-gradient(135deg, #ffa3bf, #d9447a); }
}