/* ============================================
   知常轩 主站样式 V1.0
   色彩体系（V2.2 方案 2.1）：五色 + 中性色
   玄青 #1C1C2E · 缃黄 #E8C547 · 绛赤 #C73E3A
   翠青 #2D6A4F · 霜白 #F5F0E8 · 月白 #E8EEF2
   墨黑 #1A1A1A · 青瓷 #7BA3A8
   ============================================ */

:root {
  --xuan-qing: #1C1C2E;
  --xuan-qing-deep: #0D0D1A;
  --xiang-huang: #E8C547;
  --jiang-chi: #C73E3A;
  --cui-qing: #2D6A4F;
  --shuang-bai: #F5F0E8;
  --yue-bai: #E8EEF2;
  --mo-hei: #1A1A1A;
  --qing-ci: #7BA3A8;
  --serif: "Songti SC", "SimSun", "Noto Serif CJK SC", serif;
  --kai: "Kaiti SC", "KaiTi", "STKaiti", serif;
}

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

html { font-size: 16px; }

body {
  font-family: var(--serif);
  background: var(--shuang-bai);
  color: var(--mo-hei);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--cui-qing); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- 头部 ---------- */
.site-header {
  background: var(--xuan-qing);
  border-bottom: 3px solid var(--xiang-huang);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--shuang-bai);
  text-decoration: none;
}

.logo-img {
  height: 44px;
  width: auto;
  display: block;
}

.logo-mark {
  font-family: var(--kai);
  font-size: 24px;
  letter-spacing: 6px;
  color: var(--shuang-bai);
}

.logo-seal {
  background: var(--jiang-chi);
  color: #fff;
  font-size: 12px;
  padding: 2px 6px;
  border-radius: 3px;
  letter-spacing: 1px;
}

.main-nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.main-nav a {
  color: var(--yue-bai);
  font-size: 15px;
  opacity: .85;
  transition: opacity .2s;
}

.main-nav a:hover { opacity: 1; text-decoration: none; }

.nav-toggle { display: none; background: none; border: none; color: var(--xiang-huang); font-size: 24px; cursor: pointer; }

/* ---------- 首页 Hero ---------- */
.hero {
  background: linear-gradient(135deg, var(--xuan-qing-deep), var(--xuan-qing) 60%, #2c2c44);
  color: var(--shuang-bai);
  text-align: center;
  padding: 88px 20px 76px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "☰☰☰☰☰☰☰☰☰☰☰☰";
  position: absolute;
  top: 10px; left: 0; right: 0;
  color: rgba(232, 197, 71, .15);
  letter-spacing: 8px;
  font-size: 13px;
}

.hero h1 {
  font-family: var(--kai);
  font-size: 44px;
  letter-spacing: 14px;
  color: var(--xiang-huang);
  margin-bottom: 18px;
}

.hero-lead {
  font-size: 19px;
  color: var(--yue-bai);
  line-height: 2;
  margin-bottom: 10px;
}

.hero-sub {
  font-size: 14px;
  color: var(--qing-ci);
  letter-spacing: 2px;
  margin-bottom: 28px;
}

.hero-cta { display: flex; gap: 16px; justify-content: center; }

.btn {
  display: inline-block;
  padding: 10px 26px;
  font-size: 15px;
  letter-spacing: 2px;
  border-radius: 4px;
  transition: all .2s;
  border: 1px solid transparent;
}

.btn-primary { background: var(--jiang-chi); color: #fff; }
.btn-primary:hover { background: #a8322e; text-decoration: none; }

.btn-ghost { border-color: var(--xiang-huang); color: var(--xiang-huang); background: transparent; }
.btn-ghost:hover { background: rgba(232, 197, 71, .12); text-decoration: none; }

/* ---------- 每日一句横幅 ---------- */
.daily-strip {
  background: var(--yue-bai);
  border-top: 1px solid #d8e0e6;
  border-bottom: 1px solid #d8e0e6;
}

.daily-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 26px 20px;
  display: flex;
  align-items: flex-start;
  gap: 24px;
}

.daily-label {
  flex-shrink: 0;
  background: var(--xuan-qing);
  color: var(--xiang-huang);
  font-size: 13px;
  padding: 4px 12px;
  border-radius: 3px;
  letter-spacing: 2px;
  margin-top: 4px;
}

.daily-original { font-size: 18px; color: var(--mo-hei); font-weight: 700; margin-bottom: 4px; }
.daily-trans { font-size: 14px; color: #555; }
.daily-scene { font-size: 13px; color: var(--qing-ci); margin-top: 4px; }

.daily-more {
  flex-shrink: 0;
  font-size: 13px;
  margin-left: auto;
  align-self: center;
}

/* ---------- 通用区块 ---------- */
.section-head {
  text-align: center;
  margin-bottom: 32px;
}

.section-head h2 {
  font-family: var(--kai);
  font-size: 30px;
  letter-spacing: 8px;
  color: var(--xuan-qing);
  position: relative;
  display: inline-block;
  padding: 0 20px;
}

.section-head h2::before, .section-head h2::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 34px;
  height: 1px;
  background: var(--xiang-huang);
}

.section-head h2::before { left: -40px; }
.section-head h2::after { right: -40px; }

.section-head p { color: var(--qing-ci); font-size: 14px; margin-top: 6px; letter-spacing: 1px; }

/* ---------- 模块网格 ---------- */
.modules-grid { max-width: 1200px; margin: 0 auto; padding: 56px 20px; }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.module-card {
  display: block;
  background: #fff;
  border: 1px solid #e5ddd0;
  border-radius: 8px;
  padding: 24px 20px;
  transition: transform .2s, box-shadow .2s;
  position: relative;
  overflow: hidden;
  color: var(--mo-hei);
}

.module-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--card-accent);
}

.module-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(28, 28, 46, .12);
  text-decoration: none;
}

.module-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--card-color);
  color: var(--card-accent);
  font-size: 22px;
  margin-bottom: 12px;
}

.module-card h3 { font-size: 20px; letter-spacing: 3px; margin-bottom: 2px; }
.module-en { font-size: 12px; color: var(--qing-ci); letter-spacing: 1px; margin-bottom: 10px; }
.module-desc { font-size: 13px; color: #666; line-height: 1.7; margin-bottom: 12px; }
.module-link { font-size: 13px; color: var(--cui-qing); }

/* ---------- 今日推荐 ---------- */
.today-pick { background: var(--yue-bai); padding: 56px 20px; }

.pick-card {
  max-width: 860px;
  margin: 0 auto;
  background: #fff;
  border-radius: 8px;
  padding: 32px;
  border-left: 5px solid var(--xiang-huang);
  box-shadow: 0 2px 12px rgba(28, 28, 46, .06);
}

.pick-tag {
  background: var(--cui-qing);
  color: #fff;
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 10px;
  letter-spacing: 1px;
}

.pick-card h3 { font-size: 22px; margin: 12px 0 10px; color: var(--xuan-qing); }
.pick-card p { font-size: 15px; color: #555; margin-bottom: 18px; }

/* ---------- 模块页 ---------- */
.module-hero {
  background: linear-gradient(135deg, var(--mod-color), var(--mod-color) 55%, #3a3a52);
  color: var(--shuang-bai);
  padding: 60px 20px;
  position: relative;
  overflow: hidden;
}

.module-hero::after {
  content: "☰☰☰☰☰☰☰☰☰";
  position: absolute;
  bottom: 8px; left: 0; right: 0;
  color: rgba(255, 255, 255, .08);
  letter-spacing: 6px;
  font-size: 12px;
}

.module-hero-inner { max-width: 1200px; margin: 0 auto; }

.module-kicker {
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--mod-accent);
  text-transform: uppercase;
}

.module-hero h1 {
  font-family: var(--kai);
  font-size: 40px;
  letter-spacing: 10px;
  margin: 8px 0 12px;
  color: var(--mod-accent);
}

.module-hero p { font-size: 16px; color: rgba(245, 240, 232, .85); max-width: 640px; }
.module-hero .btn { margin-top: 20px; }

.module-columns { max-width: 1200px; margin: 0 auto; padding: 48px 20px; }
.column-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }

.column-item {
  background: #fff;
  border: 1px solid #e5ddd0;
  border-radius: 6px;
  padding: 20px;
}

.column-item h3 { font-size: 17px; letter-spacing: 2px; margin-bottom: 6px; }
.coming-soon { font-size: 13px; color: var(--qing-ci); }

.column-article {
  display: block;
  font-size: 13px;
  color: var(--cui-qing);
  line-height: 1.7;
  margin-top: 6px;
  padding-left: 10px;
  border-left: 2px solid var(--xiang-huang);
}

.column-article:hover { color: var(--jiang-chi); }

.module-preview { background: var(--yue-bai); padding: 48px 20px; }
.preview-card {
  max-width: 860px;
  margin: 0 auto;
  background: #fff;
  border-radius: 8px;
  padding: 28px;
  text-align: center;
  border-top: 4px solid var(--cui-qing);
}

.preview-card p { color: #555; margin-bottom: 16px; }

/* ---------- 页面通用 ---------- */
.page-head {
  background: var(--xuan-qing);
  color: var(--shuang-bai);
  text-align: center;
  padding: 48px 20px;
}

.page-head h1 { font-family: var(--kai); font-size: 34px; letter-spacing: 8px; color: var(--xiang-huang); }
.page-head p { color: var(--qing-ci); margin-top: 8px; font-size: 14px; }

.page-body { max-width: 1000px; margin: 0 auto; padding: 44px 20px; }

.empty-state { text-align: center; padding: 60px 20px; }
.empty-state h1 { font-size: 48px; color: var(--qing-ci); }
.empty-state p { color: #666; margin: 12px 0 24px; }

.note { text-align: center; color: var(--qing-ci); font-size: 13px; margin-top: 30px; }

/* ---------- 每日一句页 ---------- */
.daily-collection { display: flex; flex-direction: column; gap: 20px; }
.daily-card {
  background: #fff;
  border-radius: 8px;
  padding: 26px 30px;
  border-left: 4px solid var(--xiang-huang);
  box-shadow: 0 2px 10px rgba(28, 28, 46, .05);
}

.daily-card .daily-original { font-size: 20px; }
.daily-card .daily-source { font-size: 13px; color: var(--qing-ci); margin: 2px 0 10px; }

/* ---------- 资源中心 ---------- */
.resource-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 18px; }

.resource-card {
  background: #fff;
  border-radius: 8px;
  padding: 22px;
  border: 1px solid #e5ddd0;
  position: relative;
}

.resource-grade {
  position: absolute;
  top: 14px; right: 14px;
  width: 28px; height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
}

.grade-a { background: var(--cui-qing); }

.resource-card h3 { font-size: 18px; margin-bottom: 8px; }
.resource-card p { font-size: 13px; color: #666; line-height: 1.7; margin-bottom: 10px; }

.resource-status {
  font-size: 12px;
  color: var(--cui-qing);
  border: 1px solid var(--cui-qing);
  padding: 1px 8px;
  border-radius: 10px;
}

.resource-link {
  font-size: 13px;
  color: var(--jiang-chi);
  font-weight: 700;
}

/* ---------- 家长学堂 ---------- */
.parent-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 18px; }

.parent-card {
  background: #fff;
  border-radius: 8px;
  padding: 24px;
  border: 1px solid #e5ddd0;
  border-top: 4px solid var(--xiang-huang);
}

.parent-card h3 { font-size: 18px; margin-bottom: 8px; }
.parent-card p { font-size: 14px; color: #666; margin-bottom: 10px; }

/* ---------- 关于 ---------- */
.about-body { max-width: 820px; }
.about-block { margin-bottom: 36px; }
.about-block h2 {
  font-size: 20px;
  color: var(--xuan-qing);
  letter-spacing: 3px;
  padding-left: 14px;
  border-left: 4px solid var(--xiang-huang);
  margin-bottom: 12px;
}

.about-block p { color: #444; margin-bottom: 10px; }

.contact-team {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 16px;
}
.contact-person {
  background: #fff;
  border: 1px solid #e5ddd0;
  border-radius: 8px;
  padding: 18px 20px;
  text-align: center;
}
.contact-role {
  font-size: 12px;
  color: var(--jiang-chi);
  letter-spacing: 4px;
  margin-bottom: 6px;
}
.contact-name {
  font-size: 20px;
  color: var(--xuan-qing);
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 6px;
}
.contact-desc { font-size: 13px; color: #888; margin: 0; }

/* ---------- 文章页 ---------- */
.article-body { max-width: 860px; }
.article-card {
  background: #fff;
  border-radius: 8px;
  padding: 36px 40px;
  border: 1px solid #e5ddd0;
  box-shadow: 0 2px 12px rgba(28, 28, 46, .06);
}

.article-sec { margin-bottom: 28px; }

.sec-label {
  font-size: 14px;
  color: var(--jiang-chi);
  letter-spacing: 4px;
  padding-left: 10px;
  border-left: 3px solid var(--jiang-chi);
  margin-bottom: 12px;
}

.article-original {
  font-size: 20px;
  line-height: 2.2;
  letter-spacing: 2px;
  color: #222;
  background: var(--shuang-bai);
  border-radius: 6px;
  padding: 18px 22px;
}

.article-annotation { font-size: 15px; color: #666; line-height: 2; }
.article-translation {
  font-size: 15px;
  color: #444;
  background: var(--yue-bai);
  border-radius: 6px;
  padding: 16px 20px;
  line-height: 2;
}

.article-content { font-size: 16px; color: #333; line-height: 2.1; }
.article-content br + br { display: none; }

.article-tags { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-size: 12px;
  color: var(--cui-qing);
  border: 1px solid var(--cui-qing);
  padding: 2px 10px;
  border-radius: 12px;
}

.article-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 24px;
  gap: 12px;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--xuan-qing-deep);
  color: var(--yue-bai);
  margin-top: 40px;
  border-top: 3px solid var(--xiang-huang);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 36px 20px 28px;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.2fr;
  gap: 30px;
}

.footer-logo-img {
  height: 52px;
  width: auto;
  margin-bottom: 6px;
}

.footer-logo { font-family: var(--kai); font-size: 22px; letter-spacing: 6px; color: var(--xiang-huang); }
.footer-brand p { font-size: 13px; color: var(--qing-ci); margin-top: 8px; }

.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links a { color: var(--yue-bai); font-size: 14px; opacity: .85; }
.footer-links a:hover { opacity: 1; }

.footer-icp { font-size: 13px; line-height: 2; text-align: right; }
.footer-icp a { color: var(--qing-ci); }
.footer-icp a:hover { color: var(--yue-bai); }
.gongan-badge { width: 20px; height: 22px; vertical-align: middle; margin-right: 4px; }
.footer-note { color: #6a6a7a; font-size: 12px; margin-top: 6px; }

/* ---------- 移动端 ---------- */
@media (max-width: 768px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--xuan-qing);
    flex-direction: column;
    padding: 16px 20px;
    gap: 14px;
    border-bottom: 3px solid var(--xiang-huang);
  }
  .main-nav.open { display: flex; }
  .nav-toggle { display: block; }
  .hero h1 { font-size: 30px; letter-spacing: 8px; }
  .daily-inner { flex-direction: column; gap: 10px; }
  .daily-more { margin-left: 0; }
  .footer-inner { grid-template-columns: 1fr; text-align: center; }
  .footer-icp { text-align: center; }
}

@media (max-width: 375px) {
  .grid { grid-template-columns: 1fr; }
  body { font-size: 16px; }
}