:root {
  --ivory: #FFF8EE;
  --paper: #ffffff;
  --ink: #302d43;
  --muted: #7a7189;
  --tangerine: #F47C59;
  --tangerine-deep: #E2633C;
  --tangerine-soft: #FDE8DD;
  --lilac: #eee7f8;
  --lilac-ink: #6b5a8e;
  --mint: #e5efe9;
  --mint-ink: #3d6255;
  --note-blue: #e6eef7;
  --note-blue-ink: #4a5f7d;
  --tape: rgba(217, 206, 233, 0.85);
  --line: #eadfce;
  --line-soft: #f3e9da;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-soft: 0 1px 2px rgba(72, 55, 34, 0.04), 0 12px 32px rgba(72, 55, 34, 0.08);
  --shadow-float: 0 6px 24px rgba(72, 55, 34, 0.14);
  color-scheme: light;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background-color: var(--ivory);
  background-image: radial-gradient(circle, #f1e6d2 1px, transparent 1px);
  background-size: 26px 26px;
  color: var(--ink);
  font-family: Inter, ui-rounded, "SF Pro Rounded", "PingFang SC", "Hiragino Sans GB", system-ui, sans-serif;
  font-synthesis: none;
  font-size: 15px;
  line-height: 1.8;
  overflow-x: hidden;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--tangerine-deep); text-decoration: none; }

.wrap { max-width: 960px; margin: 0 auto; padding: 0 24px; }

::selection { background: var(--tangerine-soft); }

/* —— 顶部导航 —— */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 248, 238, 0.88);
  backdrop-filter: saturate(150%) blur(14px);
  border-bottom: 1px solid var(--line-soft);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 600; font-size: 16px; letter-spacing: 0.08em; }
.brand img { width: 30px; height: 30px; border-radius: 9px; display: block; }
.nav-links { display: flex; gap: 22px; font-size: 14px; }
.nav-links a { color: var(--muted); }

/* —— Hero —— */
.hero { padding: 72px 0 80px; }
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: center; }
.hero-copy .mark { width: 76px; height: 76px; border-radius: 20px; display: block; margin-bottom: 22px;
  box-shadow: 0 10px 26px rgba(244, 124, 89, 0.28); }
h1 { font-size: 54px; line-height: 1.15; margin: 0 0 12px; letter-spacing: 0.12em; }
.tagline { font-size: 21px; color: var(--tangerine); margin: 0 0 18px; letter-spacing: 0.16em; font-weight: 600; }
.lede { margin: 0 0 8px; color: var(--muted); font-size: 16.5px; max-width: 460px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 16px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 52px; padding: 0 32px; border-radius: 999px;
  font-size: 15.5px; font-weight: 600; border: 1px solid transparent; cursor: pointer;
}
.btn-primary { background: var(--tangerine); color: #fff; box-shadow: 0 10px 24px rgba(244, 124, 89, 0.36); }
.btn-ghost { background: var(--paper); color: var(--ink); border-color: var(--line); }
.hero-note { font-size: 13px; color: var(--muted); margin: 0; }

/* 拍立得相框 */
.hero-art { position: relative; }
.polaroid {
  background: var(--paper);
  padding: 14px 14px 20px;
  border-radius: 16px;
  box-shadow: var(--shadow-float);
  transform: rotate(1.6deg);
  max-width: 340px;
  margin: 0 auto;
}
.polaroid img { display: block; width: 100%; border-radius: 10px; }
.polaroid .caption { font-size: 12.5px; color: var(--muted); text-align: center; margin: 12px 0 0; letter-spacing: 0.1em; }
.polaroid::before, .polaroid::after {
  content: ""; position: absolute; width: 92px; height: 26px;
  background: var(--tape); border-radius: 3px; box-shadow: 0 1px 3px rgba(72, 55, 34, 0.1);
}
.polaroid::before { top: -12px; left: 18px; transform: rotate(-5deg); }
.polaroid::after { top: -10px; right: 22px; transform: rotate(4deg); }
.sticker-float { position: absolute; z-index: 2; }
.sticker-float img { display: block; width: 128px; filter: drop-shadow(0 6px 14px rgba(72, 55, 34, 0.18)); }
.sf-tl { top: -34px; left: -36px; transform: rotate(-9deg); }
.sf-br { bottom: -30px; right: -30px; transform: rotate(7deg); }
.sf-br img { width: 140px; }

/* —— 区块通用 —— */
section.block { padding: 64px 0; }
.block-head { margin-bottom: 36px; }
.block-head h2 { font-size: 28px; margin: 0 0 10px; letter-spacing: 0.03em; }
.block-head h2::before { content: "✦ "; color: var(--tangerine); font-size: 22px; }
.block-head p { margin: 0; color: var(--muted); font-size: 15px; }
.divider { height: 1px; background: var(--line-soft); border: 0; margin: 0; }

/* —— 便签卡片（痛点）—— */
.notes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.note {
  position: relative;
  border-radius: 6px 18px 6px 18px;
  padding: 30px 24px 24px;
  box-shadow: var(--shadow-soft);
}
.note::before {
  content: ""; position: absolute; top: -12px; left: 50%; margin-left: -44px;
  width: 88px; height: 25px; background: var(--tape); border-radius: 3px;
  box-shadow: 0 1px 3px rgba(72, 55, 34, 0.1); transform: rotate(-3deg);
}
.note-lilac { background: var(--lilac); transform: rotate(-1.2deg); }
.note-mint { background: var(--mint); transform: rotate(0.8deg); }
.note-blue { background: var(--note-blue); transform: rotate(-0.6deg); }
.note h3 { margin: 0 0 10px; font-size: 17px; line-height: 1.5; }
.note-lilac h3 { color: var(--lilac-ink); }
.note-mint h3 { color: var(--mint-ink); }
.note-blue h3 { color: var(--note-blue-ink); }
.note p { margin: 0; color: var(--ink); font-size: 14px; opacity: 0.82; line-height: 1.8; }

/* —— 小屋里的一天（贴纸时间线）—— */
.day { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.day-item {
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  padding: 24px 18px 22px;
  text-align: center;
  box-shadow: var(--shadow-soft);
}
.day-item img { width: 116px; height: 116px; display: block; margin: 0 auto 4px;
  filter: drop-shadow(0 5px 12px rgba(72, 55, 34, 0.14)); }
.day-item .when { font-size: 12.5px; letter-spacing: 0.28em; color: var(--tangerine); font-weight: 600; margin: 0 0 6px; }
.day-item h3 { margin: 0 0 6px; font-size: 16px; letter-spacing: 0.06em; }
.day-item p { margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.75; }

/* —— 阿在 —— */
.azai {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-xl);
  padding: 42px 40px 38px;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}
.azai::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 5px;
  background: linear-gradient(90deg, var(--tangerine), #f9c789, var(--lilac));
}
.azai-head { display: flex; align-items: center; gap: 20px; margin-bottom: 8px; }
.azai-head img { width: 84px; height: 84px; border-radius: 50%; display: block;
  box-shadow: 0 8px 22px rgba(244, 124, 89, 0.22); }
.azai-head h2 { margin: 0 0 4px; font-size: 26px; }
.azai-head p { margin: 0; color: var(--muted); font-size: 14.5px; }
.azai > p.azai-intro { color: var(--muted); margin: 14px 0 30px; max-width: 620px; font-size: 15px; }
.azai-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.azai-item h3 { margin: 0 0 6px; font-size: 15.5px; }
.azai-item h3::before { content: "✦ "; color: var(--tangerine); font-size: 13px; }
.azai-item p { margin: 0; color: var(--muted); font-size: 14px; }
.azai-sticker { position: absolute; right: 34px; top: 34px; }
.azai-sticker img { width: 104px; display: block; transform: rotate(8deg);
  filter: drop-shadow(0 5px 12px rgba(72, 55, 34, 0.14)); }

/* —— 三步 —— */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.step {
  background: var(--paper); border: 1px solid var(--line-soft); border-radius: var(--radius-lg);
  padding: 26px 24px; box-shadow: var(--shadow-soft); position: relative;
}
.step .num {
  width: 36px; height: 36px; border-radius: 50%; background: var(--tangerine); color: #fff;
  display: inline-flex; align-items: center; justify-content: center; font-size: 16px; font-weight: 700;
  margin-bottom: 14px; box-shadow: 0 6px 16px rgba(244, 124, 89, 0.32);
}
.step h3 { margin: 0 0 6px; font-size: 16px; }
.step p { margin: 0; color: var(--muted); font-size: 14px; }

/* —— FAQ —— */
.faq { background: var(--paper); border: 1px solid var(--line-soft); border-radius: var(--radius-xl);
  padding: 10px 32px; box-shadow: var(--shadow-soft); }
.faq details { border-bottom: 1px solid var(--line-soft); padding: 18px 0; }
.faq details:last-child { border-bottom: 0; }
.faq summary { cursor: pointer; font-size: 15.5px; font-weight: 600; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "+"; color: var(--tangerine); margin-right: 12px; font-weight: 700; }
.faq details[open] summary::before { content: "−"; }
.faq p { margin: 10px 0 0 24px; color: var(--muted); font-size: 14px; }

/* —— CTA —— */
.try {
  position: relative;
  background: linear-gradient(180deg, #fff3e4, var(--tangerine-soft));
  border: 1px solid #f6ddcb;
  border-radius: var(--radius-xl);
  padding: 52px 32px 48px;
  text-align: center;
  overflow: hidden;
}
.try img.mark { width: 72px; height: 72px; border-radius: 50%; display: block; margin: 0 auto 16px;
  box-shadow: 0 10px 24px rgba(244, 124, 89, 0.26); }
.try h2 { margin: 0 0 10px; font-size: 26px; letter-spacing: 0.04em; }
.try p { margin: 0 auto 26px; color: var(--muted); max-width: 480px; }
.try .cta { justify-content: center; }
.try .sf-a { position: absolute; left: 30px; bottom: 22px; transform: rotate(-8deg); }
.try .sf-a img { width: 96px; display: block; filter: drop-shadow(0 5px 12px rgba(72, 55, 34, 0.14)); }
.try .sf-b { position: absolute; right: 34px; top: 26px; transform: rotate(9deg); }
.try .sf-b img { width: 88px; display: block; filter: drop-shadow(0 5px 12px rgba(72, 55, 34, 0.14)); }

/* —— 页脚 —— */
footer.site { border-top: 1px solid var(--line-soft); padding: 34px 0 46px; color: var(--muted); font-size: 13px; }
footer.site .foot { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; justify-content: space-between; }
footer.site a { color: var(--muted); }
.foot-brand { display: inline-flex; align-items: center; gap: 8px; }
.foot-brand img { width: 22px; height: 22px; border-radius: 6px; }

/* —— 正文页（隐私）—— */
.legal { padding: 64px 0 72px; }
.legal h1 { font-size: 32px; margin: 0 0 8px; }
.legal .meta { color: var(--muted); font-size: 13px; margin: 0 0 36px; }
.legal h2 { font-size: 18px; margin: 34px 0 10px; }
.legal p, .legal li { color: var(--muted); font-size: 15px; }
.legal ul { padding-left: 20px; }
.legal .providers { background: var(--paper); border: 1px solid var(--line-soft); border-radius: var(--radius-md); padding: 16px 20px; margin: 14px 0; }
.legal .providers div { display: flex; gap: 10px; font-size: 14px; }
.legal .providers dt { font-weight: 600; color: var(--ink); min-width: 92px; }
.legal dl { margin: 0; }
.legal dd { margin: 0 0 6px; color: var(--muted); font-size: 14px; }

/* —— 响应式 —— */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 56px; }
  .hero-copy { text-align: center; }
  .hero-copy .mark { margin: 0 auto 22px; }
  .hero-copy .lede { margin-left: auto; margin-right: auto; }
  .cta { justify-content: center; }
  .notes { grid-template-columns: 1fr; max-width: 460px; margin: 0 auto; gap: 34px; }
  .day { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .day-item img { width: 96px; height: 96px; }
  .azai-grid, .steps { grid-template-columns: 1fr; max-width: 460px; margin: 0 auto; gap: 22px; }
  .azai { padding: 32px 26px; }
  .azai-sticker { display: none; }
  .sf-tl { left: -8px; top: -30px; }
  .sf-tl img { width: 100px; }
  .sf-br { right: -6px; }
  .sf-br img { width: 108px; }
  .try .sf-a, .try .sf-b { display: none; }
}

@media (max-width: 560px) {
  h1 { font-size: 42px; }
  .tagline { font-size: 18px; }
  .nav-links { gap: 14px; }
  .nav-links .optional { display: none; }
  section.block { padding: 48px 0; }
  .polaroid { max-width: 262px; }
  .hero { padding: 48px 0 64px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* 悬停效果只在支持悬停的精确指针设备上生效 */
@media (hover: hover) and (pointer: fine) {
  .nav-links a:hover { color: var(--tangerine-deep); }
  .btn-primary:hover { background: var(--tangerine-deep); }
  .btn-ghost:hover { border-color: var(--tangerine); color: var(--tangerine-deep); }
  .note:hover { transform: rotate(0deg) translateY(-2px); }
  .day-item:hover { border-color: #f3d7c4; }
  footer.site a:hover { color: var(--tangerine-deep); }
}

:where(html:not([data-input-modality="keyboard"]) :focus) { outline: none; }
:where(html[data-input-modality="keyboard"]) a:focus-visible,
:where(html[data-input-modality="keyboard"]) button:focus-visible,
:where(html[data-input-modality="keyboard"]) summary:focus-visible {
  outline: 2px solid var(--tangerine);
  outline-offset: 3px;
  border-radius: 6px;
}