/* ===== 好的家庭教育 · 视觉系统 ===== */

:root {
  /* 调色板：奶油底 + 三色点缀 + 一抹深蓝 */
  --cream: #F8F2E2;
  --cream-deep: #F1E8D0;
  --paper: #FFFDF6;
  --ink: #2B2419;
  --ink-soft: #5C4F3D;
  --ink-mute: #8C7C66;

  --coral: #E56B5A;
  --coral-soft: #F4A799;
  --yellow: #F4C13E;
  --yellow-soft: #FBE39A;
  --green: #6FA86D;
  --green-soft: #B5D4A8;
  --blue: #4B7BA8;
  --blue-soft: #A8C2DE;

  --shadow-soft: 0 2px 0 rgba(43, 36, 25, 0.08);
  --shadow-card: 0 4px 0 rgba(43, 36, 25, 0.06), 0 12px 32px -16px rgba(43, 36, 25, 0.18);
  --radius: 18px;
  --radius-lg: 28px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "LXGW WenKai TC", "LXGW WenKai", "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  background: var(--cream);
  color: var(--ink);
  line-height: 1.75;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* 背景上的小装饰圆点（绘本质感） */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 8% 12%, rgba(229, 107, 90, 0.06) 0, transparent 28%),
    radial-gradient(circle at 92% 8%, rgba(244, 193, 62, 0.08) 0, transparent 26%),
    radial-gradient(circle at 6% 92%, rgba(111, 168, 109, 0.06) 0, transparent 28%),
    radial-gradient(circle at 94% 88%, rgba(75, 123, 168, 0.05) 0, transparent 28%);
  z-index: 0;
}

/* ===== 通用排版 ===== */

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 1;
}

.wrap-narrow {
  max-width: 720px;
}

h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: 0.01em;
  text-wrap: balance;
}

h1 {
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.15;
}

h2 {
  font-size: clamp(28px, 3.5vw, 40px);
  line-height: 1.2;
}

h3 {
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.3;
}

p {
  text-wrap: pretty;
}

a {
  color: inherit;
}

/* ===== 顶部导航 ===== */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(248, 242, 226, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(43, 36, 25, 0.06);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  max-width: 1280px;
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 600;
}

.brand-dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--coral);
  position: relative;
  box-shadow: 0 0 0 4px rgba(229, 107, 90, 0.15);
}

.brand-dot::after {
  content: "";
  position: absolute;
  inset: 6px;
  background: var(--yellow);
  border-radius: 50%;
}

.topnav {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.topnav a {
  text-decoration: none;
  font-size: 15px;
  padding: 6px 14px;
  border-radius: 999px;
  color: var(--ink-soft);
  transition: all 0.2s ease;
}

.topnav a:hover {
  background: rgba(43, 36, 25, 0.06);
  color: var(--ink);
}

/* ===== Hero ===== */

.hero {
  padding: 96px 0 64px;
  position: relative;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 14px;
  letter-spacing: 0.15em;
  color: var(--coral);
  margin-bottom: 24px;
  padding: 6px 14px;
  background: rgba(229, 107, 90, 0.08);
  border-radius: 999px;
}

.hero h1 {
  margin-bottom: 28px;
}

.hero h1 .scribble {
  position: relative;
  display: inline-block;
}

.hero h1 .scribble::after {
  content: "";
  position: absolute;
  left: -4px;
  right: -4px;
  bottom: 2px;
  height: 14px;
  background: var(--yellow);
  border-radius: 8px;
  z-index: -1;
  opacity: 0.55;
}

.hero-sub {
  font-size: 20px;
  color: var(--ink-soft);
  max-width: 640px;
  margin-bottom: 36px;
}

.hero-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--ink-mute);
}

.hero-meta span {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-meta span::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--coral);
}

.hero-meta span:nth-child(2)::before { background: var(--yellow); }
.hero-meta span:nth-child(3)::before { background: var(--green); }
.hero-meta span:nth-child(4)::before { background: var(--blue); }

/* 绘本风的装饰小图形 */
.hero-doodle {
  position: absolute;
  pointer-events: none;
  z-index: -1;
}

.hero-doodle.d1 {
  top: 40px;
  right: 8%;
  width: 80px;
  height: 80px;
}

.hero-doodle.d2 {
  bottom: 40px;
  right: 22%;
  width: 60px;
  height: 60px;
}

/* ===== Section 通用 ===== */

section {
  padding: 64px 0;
  position: relative;
}

.section-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  letter-spacing: 0.15em;
  color: var(--ink-mute);
  margin-bottom: 16px;
  text-transform: uppercase;
}

.section-eyebrow::before {
  content: "";
  width: 32px;
  height: 2px;
  background: var(--coral);
  border-radius: 2px;
}

.section-title {
  margin-bottom: 12px;
}

.section-lead {
  font-size: 18px;
  color: var(--ink-soft);
  max-width: 640px;
  margin-bottom: 48px;
}

/* ===== 核心理念卡片 ===== */

.ideas {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.idea {
  background: var(--paper);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-card);
  position: relative;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  border: 1.5px solid transparent;
  overflow: hidden;
}

.idea:hover {
  transform: translateY(-2px);
  border-color: rgba(229, 107, 90, 0.2);
}

.idea-num {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-mute);
  letter-spacing: 0.12em;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.idea-num-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--coral);
}

.idea[data-color="yellow"] .idea-num-dot { background: var(--yellow); }
.idea[data-color="green"]  .idea-num-dot { background: var(--green); }
.idea[data-color="blue"]   .idea-num-dot { background: var(--blue); }
.idea[data-color="coral"]  .idea-num-dot { background: var(--coral); }

.idea h3 {
  margin-bottom: 14px;
}

.idea-scene {
  font-size: 16px;
  color: var(--ink-soft);
  margin-bottom: 18px;
  padding: 14px 16px;
  background: var(--cream);
  border-left: 3px solid var(--coral);
  border-radius: 4px;
  line-height: 1.7;
}

.idea[data-color="yellow"] .idea-scene { border-left-color: var(--yellow); }
.idea[data-color="green"]  .idea-scene { border-left-color: var(--green); }
.idea[data-color="blue"]   .idea-scene { border-left-color: var(--blue); }

.idea-key {
  font-size: 17px;
  font-weight: 500;
  margin-bottom: 14px;
  line-height: 1.6;
}

.idea-detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.idea.is-open .idea-detail {
  max-height: 1200px;
}

.idea-detail-inner {
  padding-top: 8px;
  font-size: 16px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.idea-detail-inner p {
  margin-bottom: 12px;
}

.idea-detail-inner strong {
  color: var(--ink);
  background: linear-gradient(transparent 60%, rgba(244, 193, 62, 0.4) 60%);
}

.idea-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--ink-mute);
  margin-top: 16px;
}

.idea-toggle .arrow {
  display: inline-block;
  transition: transform 0.3s;
}

.idea.is-open .idea-toggle .arrow {
  transform: rotate(180deg);
}

/* ===== 给家里每个人（人物卡） ===== */

.persons {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.person {
  display: block;
  text-decoration: none;
  background: var(--paper);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform 0.25s ease;
}

.person:hover {
  transform: translateY(-3px);
}

.person-tag {
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--ink-mute);
  margin-bottom: 10px;
}

.person h3 {
  margin-bottom: 12px;
}

.person p {
  color: var(--ink-soft);
  font-size: 16px;
  margin-bottom: 24px;
}

.person-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  color: var(--ink);
  font-size: 15px;
  padding: 8px 16px;
  background: var(--cream);
  border-radius: 999px;
}

.person-avatar {
  position: absolute;
  right: 24px;
  top: 24px;
  width: 64px;
  height: 64px;
}

/* ===== 共读清单 ===== */

.booklist {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.book {
  background: var(--paper);
  padding: 20px 22px;
  border-radius: 14px;
  box-shadow: var(--shadow-soft);
  border-left: 4px solid var(--coral);
}

.book:nth-child(4n+2) { border-left-color: var(--yellow); }
.book:nth-child(4n+3) { border-left-color: var(--green); }
.book:nth-child(4n+4) { border-left-color: var(--blue); }

.book-for {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
  margin-bottom: 6px;
}

.book h4 {
  font-size: 17px;
  margin-bottom: 6px;
}

.book-note {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.6;
}

/* ===== 家庭墙入口 ===== */

.wall-entry {
  background: var(--paper);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 32px;
  align-items: center;
  box-shadow: var(--shadow-card);
}

.wall-entry h3 {
  margin-bottom: 12px;
}

.wall-entry p {
  color: var(--ink-soft);
  margin-bottom: 20px;
}

.wall-preview {
  background: var(--cream-deep);
  border-radius: 14px;
  padding: 20px;
  aspect-ratio: 3 / 4;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  font-size: 11px;
  color: var(--ink-mute);
  border: 1px solid rgba(43, 36, 25, 0.08);
}

.wall-preview-title {
  font-size: 14px;
  color: var(--ink);
  font-weight: 600;
}

.wall-preview-rules {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 10px;
  line-height: 1.4;
}

.wall-preview-rules span {
  display: block;
  padding-left: 10px;
  border-left: 2px solid var(--coral);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  background: var(--ink);
  color: var(--cream);
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  transition: transform 0.2s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--ink);
}

/* ===== 页脚 ===== */

footer {
  padding: 64px 0 80px;
  text-align: center;
  color: var(--ink-mute);
  font-size: 14px;
  border-top: 1px solid rgba(43, 36, 25, 0.08);
  margin-top: 64px;
}

footer p {
  margin-bottom: 8px;
}

/* ===== 响应式 ===== */

@media (max-width: 760px) {
  .wrap { padding: 0 20px; }
  .topnav { display: none; }
  .hero { padding: 56px 0 40px; }
  section { padding: 40px 0; }
  .ideas, .persons { grid-template-columns: 1fr; }
  .wall-entry { grid-template-columns: 1fr; padding: 28px; }
  body { font-size: 16px; }
}