/* ============================================
   高剑·传统智慧与现代心理 网站样式
   色调：墨色、赭石、米白——陨铁灰胎与古琴质感
   ============================================ */

:root {
  --ink: #1a1a1a;
  --ochre: #8B4513;
  --ochre-light: #A0522D;
  --cream: #F5F0E8;
  --cream-dark: #E8E0D0;
  --grey-taupe: #6B635B;
  --accent: #C9A96E;
  --white: #FFFFFF;
  --serif: "Noto Serif SC", "Source Han Serif SC", "STSong", Georgia, serif;
  --sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.8;
  font-size: 16px;
}

/* ---- 排版 ---- */
h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.4;
}

h1 { font-size: 2.4rem; }
h2 { font-size: 1.8rem; }
h3 { font-size: 1.3rem; }

a {
  color: var(--ochre);
  text-decoration: none;
  transition: color 0.3s;
}
a:hover { color: var(--ochre-light); }

img { max-width: 100%; height: auto; }

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

/* ---- 导航 ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(245, 240, 232, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--cream-dark);
}

.nav-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--serif);
  font-size: 1.2rem;
  color: var(--ink);
  letter-spacing: 0.1em;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--grey-taupe);
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--ochre);
  transition: width 0.3s;
}
.nav-links a:hover::after { width: 100%; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--ink);
  margin: 5px 0;
  transition: 0.3s;
}

/* ---- Hero ---- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  background: linear-gradient(160deg, var(--cream) 0%, #EDE6D8 100%);
}

.hero-tag {
  font-family: var(--sans);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  color: var(--grey-taupe);
  margin-bottom: 24px;
  text-transform: uppercase;
}

.hero-name {
  font-family: var(--serif);
  font-size: 3.6rem;
  color: var(--ink);
  letter-spacing: 0.15em;
  margin-bottom: 16px;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--grey-taupe);
  max-width: 520px;
  margin: 0 auto 40px;
  line-height: 1.9;
}

.hero-cards {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 48px;
}

.hero-card {
  width: 200px;
  padding: 32px 20px;
  background: var(--white);
  border: 1px solid var(--cream-dark);
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
  text-align: center;
}

.hero-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
}

.hero-card-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  display: block;
}

.hero-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.hero-card p {
  font-size: 0.85rem;
  color: var(--grey-taupe);
}

/* ---- 章节通用 ---- */
.section {
  padding: 100px 0;
}

.section-alt { background: var(--white); }

.section-label {
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  color: var(--ochre);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  margin-bottom: 48px;
}

/* ---- 古琴产品页 ---- */
.guqin-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 80px;
}

.guqin-showcase.reverse { direction: rtl; }
.guqin-showcase.reverse > * { direction: ltr; }

.guqin-img {
  aspect-ratio: 4/3;
  background: var(--cream-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--grey-taupe);
  font-size: 0.9rem;
  border: 1px solid var(--cream-dark);
}

.guqin-text h3 {
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.guqin-text p {
  color: var(--grey-taupe);
  margin-bottom: 16px;
}

.price-tag {
  font-family: var(--serif);
  font-size: 1.2rem;
  color: var(--ochre);
  margin: 16px 0;
}

.btn {
  display: inline-block;
  padding: 12px 32px;
  border: 1px solid var(--ink);
  color: var(--ink);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: all 0.3s;
  background: transparent;
}

.btn:hover {
  background: var(--ink);
  color: var(--cream);
}

.btn-primary {
  background: var(--ink);
  color: var(--cream);
}

.btn-primary:hover {
  background: var(--ochre);
  border-color: var(--ochre);
  color: var(--white);
}

/* ---- 文章列表 ---- */
.article-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.article-card {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 32px;
  padding: 32px;
  background: var(--cream);
  transition: box-shadow 0.3s;
}

.article-card:hover {
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}

.article-thumb {
  aspect-ratio: 16/10;
  background: var(--cream-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--grey-taupe);
  font-size: 0.8rem;
}

.article-meta {
  font-size: 0.8rem;
  color: var(--grey-taupe);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.article-card h3 {
  margin-bottom: 12px;
}

.article-card p {
  font-size: 0.95rem;
  color: var(--grey-taupe);
  line-height: 1.7;
}

/* ---- 关于页 ---- */
.about-header {
  padding: 120px 0 80px;
  text-align: center;
  background: linear-gradient(160deg, var(--cream) 0%, #EDE6D8 100%);
}

.about-header h1 {
  font-size: 2.8rem;
  letter-spacing: 0.12em;
  margin-bottom: 16px;
}

.about-header p {
  color: var(--grey-taupe);
  max-width: 600px;
  margin: 0 auto;
}

.about-body {
  max-width: 720px;
  margin: 0 auto;
  padding: 80px 24px;
}

.about-body h2 {
  font-size: 1.5rem;
  margin: 48px 0 24px;
  padding-left: 16px;
  border-left: 3px solid var(--ochre);
}

.about-body p {
  margin-bottom: 20px;
  color: var(--grey-taupe);
}

.about-creds {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin: 32px 0;
}

.cred-badge {
  padding: 16px 24px;
  background: var(--cream);
  border-left: 3px solid var(--ochre);
  font-size: 0.9rem;
}

/* ---- FAQ ---- */
.faq-item {
  border-bottom: 1px solid var(--cream-dark);
  padding: 24px 0;
}

.faq-q {
  font-family: var(--serif);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-q::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--ochre);
}

.faq-item.open .faq-q::after { content: "−"; }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 0;
  color: var(--grey-taupe);
}

.faq-item.open .faq-a {
  max-height: 400px;
  padding: 16px 0 0;
}

/* ---- 工作坊页 ---- */
.workshop-hero {
  padding: 120px 0 80px;
  text-align: center;
  background: linear-gradient(160deg, var(--cream) 0%, #EDE6D8 100%);
}

.workshop-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  margin-top: 48px;
}

.workshop-card {
  padding: 40px 32px;
  background: var(--white);
  border: 1px solid var(--cream-dark);
  text-align: center;
}

.workshop-card h3 {
  margin-bottom: 16px;
}

.workshop-card p {
  color: var(--grey-taupe);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

/* ---- Footer ---- */
.footer {
  padding: 64px 0 32px;
  background: var(--ink);
  color: var(--cream-dark);
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 24px;
  list-style: none;
  flex-wrap: wrap;
}

.footer-links a { color: var(--cream-dark); }
.footer-links a:hover { color: var(--white); }

.footer-copy {
  font-size: 0.8rem;
  color: var(--grey-taupe);
}

.footer-icp {
  font-size: 0.75rem;
  margin-top: 8px;
}

.footer-icp a { color: var(--grey-taupe); }

/* ---- 备案号悬浮 ---- */
.icp-float {
  position: fixed;
  bottom: 16px;
  right: 16px;
  background: var(--ink);
  color: var(--cream-dark);
  font-size: 0.7rem;
  padding: 8px 12px;
  z-index: 99;
}

.icp-float a { color: var(--cream-dark); }

/* ---- 响应式 ---- */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--cream);
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--cream-dark);
  }
  .nav-toggle { display: block; }
  .hero-name { font-size: 2.4rem; }
  .hero-cards { flex-direction: column; align-items: center; }
  .guqin-showcase { grid-template-columns: 1fr; gap: 32px; }
  .guqin-showcase.reverse { direction: ltr; }
  .article-card { grid-template-columns: 1fr; }
  h1 { font-size: 1.8rem; }
  .section { padding: 64px 0; }
}