/*
 * 绅爱会研究院 SHEN AI HUI · INSTITUTE
 * 设计风格：编辑型浅色 · 学术克制 · 杂志感
 * 主色：#fafaf7 米白 / #2c2826 编辑黑 / #b85a3a 砖红
 * 字体变体：重衬线学术风（Noto Serif SC 400, 字距 0.02em）
 * 独立内容站：与 .com 完全反差
 * v2.2
 */

/* ─── Reset & Base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}
::selection { background: rgba(184,90,58,0.20); color: #1c1814; }
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Noto Sans SC', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "kern" 1, "palt" 1;
  overflow-x: hidden;
  line-height: 1.75;
}

a {
  text-decoration: none;
  color: var(--accent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}
a:hover { border-bottom-color: var(--accent); }
img { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; }

/* ─── Color Tokens ─── */
:root {
  /* 背景层 */
  --bg:        #fafaf7;        /* 米白纸张感 */
  --bg-alt:    #f4f1ea;        /* 米色卡片 */
  --bg-card:   #ffffff;        /* 纯白卡片 */
  --bg-deep:   #2c2826;        /* 编辑黑（footer / 强调段） */

  /* 文字 */
  --ink:       #1c1814;        /* 主文字 */
  --ink-light: #4a4038;        /* 副文字 */
  --ink-muted: #8a7f72;        /* 辅文字 */
  --ink-faint: #b8aea0;        /* 最淡文字 */

  /* 学术暖色点缀 */
  --accent:      #b85a3a;      /* 砖红 */
  --accent-deep: #8a3f25;
  --accent-light:#d4775a;
  --accent-bg:   #fef3ee;      /* 砖红淡背景 */

  /* 描边 */
  --border:     #e0d9cc;       /* 暖灰描边 */
  --border-soft:#ece6da;       /* 浅描边 */
  --border-deep:#3d3835;       /* 深色块上的描边 */

  /* 风险等级色（Hub 风险表用） */
  --risk-5: #c0392b;
  --risk-4: #e67e22;
  --risk-3: #f39c12;
  --risk-2: #27ae60;
  --risk-1: #5dade2;

  /* 圆角（杂志方角） */
  --radius:    3px;
  --radius-md: 4px;
  --radius-lg: 6px;
}

/* ─── Typography ─── */
.t-label {
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
  display: block;
}

.t-hero {
  font-family: 'Noto Serif SC', serif;
  font-weight: 400;
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.t-h2 {
  font-family: 'Noto Serif SC', serif;
  font-weight: 400;
  font-size: clamp(1.5rem, 2.6vw, 2.125rem);
  line-height: 1.4;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.t-h3 {
  font-family: 'Noto Serif SC', serif;
  font-weight: 400;
  font-size: 1.125rem;
  letter-spacing: 0.02em;
  color: var(--ink);
  line-height: 1.5;
}

.t-body {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.9;
  letter-spacing: 0.02em;
  color: var(--ink-light);
}

.t-small {
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--ink-muted);
  line-height: 1.8;
}

.t-meta {
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  text-transform: uppercase;
}

.t-accent { color: var(--accent); }

/* ─── Layout ─── */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 32px;
}

.container-narrow {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 32px;
}

.section {
  padding: 80px 0;
  border-top: 1px solid var(--border-soft);
}
.section:first-of-type { border-top: none; }
.section-sm   { padding: 48px 0; }
.section-alt  { background: var(--bg-alt); }
.section-deep { background: var(--bg-deep); color: rgba(255,255,255,0.92); }

/* ─── Dividers ─── */
.divider {
  display: block;
  width: 40px;
  height: 1px;
  background: var(--accent);
  margin: 24px 0;
}
.divider-full {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--border);
}

/* ─── Buttons ─── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  background: var(--accent);
  color: #fff;
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  min-height: 46px;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
  text-decoration: none;
}
.btn-primary:hover {
  background: var(--accent-deep);
  border-color: var(--accent-deep);
  color: #fff;
  border-bottom-color: var(--accent-deep);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  background: transparent;
  color: var(--ink);
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-height: 46px;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.btn-outline:hover {
  background: var(--bg-alt);
  border-color: var(--ink-muted);
  color: var(--ink);
  border-bottom-color: var(--ink-muted);
}

/* ═══════════════════════════════════════════════════════════════
   1. NAV
   ═══════════════════════════════════════════════════════════════ */
.nav-wrap {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250,250,247,0.85);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid transparent;
  transition: background 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.nav-wrap.scrolled {
  background: rgba(250,250,247,0.96);
  border-bottom-color: var(--border-soft);
  box-shadow: 0 1px 12px rgba(0,0,0,0.04);
}
body.nav-open { overflow: hidden; }
body.gate-open { overflow: hidden; }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  max-width: 1140px;
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  border: none;
}
.nav-logo:hover { border: none; }

.nav-logo-mark {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  font-family: 'Noto Serif SC', serif;
  font-size: 17px;
  font-weight: 400;
  border-radius: var(--radius);
}
.nav-logo-text {
  font-family: 'Noto Serif SC', serif;
  font-size: 17px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--ink);
}
.nav-logo-sub {
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ink-muted);
  margin-left: 8px;
}

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 24px;
}
.nav-links li a {
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--ink-light);
  border: none;
  padding: 4px 0;
}
.nav-links li a:hover { color: var(--accent); border: none; }

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  background: var(--accent);
  color: #fff !important;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
}
.nav-cta:hover {
  background: var(--accent-deep);
  border-color: var(--accent-deep);
  color: #fff !important;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--ink);
  padding: 8px;
}

.nav-mobile {
  display: none;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border-soft);
  padding: 24px 0;
  z-index: 99;
  box-shadow: 0 10px 30px rgba(0,0,0,0.06);
}
.nav-mobile.open { display: block; }
.nav-mobile-links {
  list-style: none;
  display: flex;
  flex-direction: column;
}
.nav-mobile-links li a {
  display: block;
  padding: 16px 0;
  font-size: 16px;
  letter-spacing: 0.04em;
  color: var(--ink);
  border-bottom: 1px solid var(--border-soft);
}
.nav-mobile-links li a:hover { color: var(--accent); }

/* ═══════════════════════════════════════════════════════════════
   2. HERO (期刊封面式)
   ═══════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  padding: 96px 0 80px;
  background: var(--bg);
  border-bottom: 1px solid var(--border-soft);
}

.hero-inner {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 32px;
  text-align: left;
}

.hero-issue {
  display: inline-block;
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 32px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--accent);
}

.hero-title {
  margin-bottom: 28px;
  font-weight: 400;
}

.hero-subtitle {
  font-family: 'Noto Serif SC', serif;
  font-size: clamp(1.125rem, 1.8vw, 1.375rem);
  font-weight: 400;
  font-style: italic;
  line-height: 1.6;
  color: var(--ink-light);
  margin-bottom: 40px;
  max-width: 720px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border-soft);
}
.hero-meta span {
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 13px;
  color: var(--ink-muted);
  letter-spacing: 0.04em;
}
.hero-meta strong {
  color: var(--ink);
  font-weight: 500;
}

.hero-cta-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* ═══════════════════════════════════════════════════════════════
   3. ABOUT (研究院定位)
   ═══════════════════════════════════════════════════════════════ */
.about {
  background: var(--bg);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}

.about-intro .t-label { margin-bottom: 16px; }
.about-intro h2 { margin-bottom: 20px; }
.about-intro .t-body { margin-bottom: 16px; }

.about-pillars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.about-pillar {
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  border-top: 3px solid var(--accent);
}
.about-pillar-num {
  font-family: 'Noto Serif SC', serif;
  font-size: 28px;
  color: var(--accent);
  display: block;
  margin-bottom: 12px;
  font-weight: 400;
}
.about-pillar h3 {
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--ink);
}
.about-pillar p {
  font-size: 13.5px;
  color: var(--ink-muted);
  line-height: 1.7;
}

/* ═══════════════════════════════════════════════════════════════
   4. FEATURED (4 篇近期精选)
   ═══════════════════════════════════════════════════════════════ */
.featured {
  background: var(--bg-alt);
}
.featured-header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin-bottom: 40px;
  gap: 32px;
  flex-wrap: wrap;
}
.featured-header .t-label { margin-bottom: 8px; }
.featured-header h2 { font-size: clamp(1.5rem, 2.2vw, 1.875rem); }

.featured-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 24px;
}

.featured-hero-card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: 36px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s, transform 0.2s;
  text-decoration: none;
  color: inherit;
  border-bottom: 1px solid var(--border-soft);
}
.featured-hero-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.featured-hero-card .featured-tag {
  display: inline-block;
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 16px;
  padding: 4px 10px;
  background: var(--accent-bg);
  border-radius: 2px;
  align-self: flex-start;
}
.featured-hero-card h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1.4;
  color: var(--ink);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}
.featured-hero-card p {
  color: var(--ink-light);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 20px;
  flex: 1;
}
.featured-hero-card .featured-meta {
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 12px;
  color: var(--ink-muted);
  letter-spacing: 0.04em;
  padding-top: 16px;
  border-top: 1px solid var(--border-soft);
}

.featured-side {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.featured-side-card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 20px 24px;
  text-decoration: none;
  color: inherit;
  flex: 1;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s, transform 0.2s;
  border-bottom: 1px solid var(--border-soft);
}
.featured-side-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.featured-side-card .featured-tag {
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 10px;
  font-weight: 500;
}
.featured-side-card h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--ink);
  margin-bottom: 8px;
}
.featured-side-card .featured-meta {
  font-size: 12px;
  color: var(--ink-muted);
  letter-spacing: 0.04em;
  margin-top: auto;
  padding-top: 12px;
}

/* ═══════════════════════════════════════════════════════════════
   5. COLUMN PREVIEW BLOCKS (7 个栏目共用)
   ═══════════════════════════════════════════════════════════════ */
.column {
  background: var(--bg);
}
.column-header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin-bottom: 32px;
  gap: 24px;
  flex-wrap: wrap;
}
.column-header h2 {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.625rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  margin-bottom: 4px;
}
.column-header .column-desc {
  font-size: 14px;
  color: var(--ink-muted);
  line-height: 1.7;
  max-width: 460px;
}
.column-header .column-more {
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
}
.column-header .column-label {
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.20em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.column-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.column-list-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.column-item {
  padding: 24px 24px 22px;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s, transform 0.2s;
  border-bottom: 1px solid var(--border-soft);
}
.column-item:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.column-item h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--ink);
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}
.column-item p {
  font-size: 13.5px;
  color: var(--ink-muted);
  line-height: 1.7;
  margin-bottom: 14px;
  flex: 1;
}
.column-item .item-meta {
  font-size: 11.5px;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.column-item.is-hub {
  border-color: var(--accent);
  background: linear-gradient(180deg, var(--accent-bg), var(--bg-card));
}
.column-item.is-hub::before {
  content: "HUB";
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: #fff;
  background: var(--accent);
  padding: 2px 8px;
  border-radius: 2px;
  margin-bottom: 10px;
  align-self: flex-start;
}

/* ═══════════════════════════════════════════════════════════════
   11. METHODOLOGY (E-E-A-T 强化)
   ═══════════════════════════════════════════════════════════════ */
.methodology {
  background: var(--bg-deep);
  color: rgba(255,255,255,0.90);
}
.methodology .container { color: rgba(255,255,255,0.90); }
.methodology h2 { color: #fff; }
.methodology .t-label { color: var(--accent-light); }
.methodology .t-body { color: rgba(255,255,255,0.78); }
.methodology .divider { background: var(--accent-light); }

.methodology-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 32px;
  margin-top: 48px;
}
.methodology-step {
  padding: 28px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  border-top: 2px solid var(--accent-light);
}
.methodology-step-num {
  font-family: 'Noto Serif SC', serif;
  font-size: 32px;
  color: var(--accent-light);
  font-weight: 400;
  margin-bottom: 12px;
  display: block;
}
.methodology-step h3 {
  color: #fff;
  font-size: 1.0625rem;
  font-weight: 500;
  margin-bottom: 10px;
}
.methodology-step p {
  font-size: 13.5px;
  color: rgba(255,255,255,0.72);
  line-height: 1.75;
}

.methodology-cta {
  margin-top: 40px;
  text-align: center;
}
.methodology-cta a {
  color: var(--accent-light);
  border-bottom: 1px solid var(--accent-light);
  font-size: 14px;
  letter-spacing: 0.04em;
}

/* ═══════════════════════════════════════════════════════════════
   12. FAQ
   ═══════════════════════════════════════════════════════════════ */
.faq {
  background: var(--bg);
}
.faq-header {
  text-align: center;
  margin-bottom: 48px;
}
.faq-header .t-label { margin-bottom: 12px; }
.faq-header .divider { margin: 20px auto; }
.faq-header p {
  font-size: 15px;
  color: var(--ink-light);
  max-width: 580px;
  margin: 16px auto 0;
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--border-soft);
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  font-family: 'Noto Serif SC', serif;
  font-size: 1.0625rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--ink);
  transition: color 0.2s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--accent); }
.faq-icon {
  font-size: 22px;
  color: var(--accent);
  font-weight: 300;
  transition: transform 0.3s;
  flex-shrink: 0;
  line-height: 1;
}
.faq-item[open] .faq-icon { transform: rotate(45deg); }
.faq-answer {
  padding: 0 0 28px 0;
  color: var(--ink-light);
  font-size: 14.5px;
  line-height: 1.9;
  letter-spacing: 0.02em;
  max-width: 740px;
}
.faq-answer a {
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
}

/* ═══════════════════════════════════════════════════════════════
   13. NEWSLETTER (主转化)
   ═══════════════════════════════════════════════════════════════ */
.newsletter {
  background: var(--bg-alt);
  padding: 80px 0;
}
.newsletter-inner {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}
.newsletter .t-label { margin-bottom: 16px; }
.newsletter h2 { margin-bottom: 16px; }
.newsletter p {
  font-size: 15.5px;
  color: var(--ink-light);
  line-height: 1.8;
  margin-bottom: 32px;
}
.newsletter-form {
  display: flex;
  gap: 10px;
  max-width: 460px;
  margin: 0 auto;
}
.newsletter-form input[type="email"] {
  flex: 1;
  padding: 13px 18px;
  font-size: 14px;
  font-family: inherit;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--ink);
}
.newsletter-form input[type="email"]:focus {
  border-color: var(--accent);
  outline: none;
}
.newsletter-form button {
  padding: 13px 24px;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  border: none;
  border-radius: var(--radius);
  white-space: nowrap;
  transition: background 0.2s;
}
.newsletter-form button:hover { background: var(--accent-deep); }
.newsletter-note {
  font-size: 12px !important;
  color: var(--ink-muted) !important;
  margin-top: 16px !important;
  margin-bottom: 0 !important;
}

/* ═══════════════════════════════════════════════════════════════
   14. FOOTER
   ═══════════════════════════════════════════════════════════════ */
.footer {
  background: var(--bg-deep);
  color: rgba(255,255,255,0.72);
  padding: 64px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.footer-brand-logo {
  font-family: 'Noto Serif SC', serif;
  font-size: 19px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: #fff;
}
.footer-brand-sub {
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: rgba(255,255,255,0.45);
  text-transform: uppercase;
}
.footer-brand-tagline {
  font-size: 13px;
  color: rgba(255,255,255,0.62);
  line-height: 1.75;
  max-width: 300px;
}

.footer-col h4 {
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.20em;
  color: var(--accent-light);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 11px;
}
.footer-col ul li a {
  font-size: 13.5px;
  color: rgba(255,255,255,0.72);
  letter-spacing: 0.02em;
  border-bottom-color: transparent;
}
.footer-col ul li a:hover {
  color: var(--accent-light);
  border-bottom-color: var(--accent-light);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.08);
  gap: 28px;
}
.footer-bottom-left {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.footer-bottom p {
  font-size: 12.5px;
  color: rgba(255,255,255,0.50);
  letter-spacing: 0.04em;
  margin: 0;
}
.footer-fineprint {
  font-size: 11.5px !important;
  color: rgba(255,255,255,0.36) !important;
  letter-spacing: 0.02em !important;
}
.footer-adult {
  font-size: 11px !important;
  color: rgba(255,255,255,0.72) !important;
  letter-spacing: 0.14em !important;
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════════════════
   Back to top
   ═══════════════════════════════════════════════════════════════ */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s, background 0.25s;
  z-index: 90;
  box-shadow: 0 6px 18px rgba(184,90,58,0.30);
}
.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.back-to-top:hover { background: var(--accent-deep); }
.back-to-top:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ═══════════════════════════════════════════════════════════════
   18+ Gate
   ═══════════════════════════════════════════════════════════════ */
.adult-gate {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(44,40,38,0.78);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity 0.24s ease;
}
.adult-gate.show { opacity: 1; }

.adult-gate-card {
  max-width: 440px;
  width: 100%;
  padding: 40px 32px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: 0 24px 70px rgba(0,0,0,0.25);
  border-top: 3px solid var(--accent);
}
.adult-gate-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  margin-bottom: 20px;
  background: var(--accent);
  color: #fff;
  font-family: 'Noto Serif SC', serif;
  font-size: 18px;
  font-weight: 500;
  border-radius: 50%;
}
.adult-gate-card h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.375rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--ink);
  margin-bottom: 12px;
}
.adult-gate-card p {
  color: var(--ink-light);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 24px;
}
.adult-gate-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.adult-gate-actions .btn-primary,
.adult-gate-actions .btn-outline {
  width: 100%;
}

/* ═══════════════════════════════════════════════════════════════
   响应式 — 平板
   ═══════════════════════════════════════════════════════════════ */
@media (max-width: 1100px) {
  .nav-links { gap: 18px; }
  .nav-links li a { font-size: 13px; }
}

@media (max-width: 1024px) {
  .container { padding: 0 28px; }
  .nav-inner { padding: 16px 28px; }
  .section { padding: 64px 0; }

  .nav-links { gap: 14px; }
  .nav-links li:nth-child(5) { display: none; }   /* 隐藏一个次要项 */

  .about-grid { gap: 40px; grid-template-columns: 1fr; }
  .about-pillars { grid-template-columns: 1fr 1fr; }

  .featured-grid { grid-template-columns: 1fr; }
  .featured-side { flex-direction: row; }
  .featured-side-card { flex: 1; }

  .column-list { grid-template-columns: repeat(2, 1fr); }

  .methodology-grid { grid-template-columns: 1fr; }
}

/* ═══════════════════════════════════════════════════════════════
   响应式 — 手机
   ═══════════════════════════════════════════════════════════════ */
@media (max-width: 767px) {
  .container { padding: 0 20px; }
  .container-narrow { padding: 0 20px; }
  .nav-inner { padding: 14px 20px; }
  .section { padding: 56px 0; }

  body { font-size: 14px; }

  /* Nav */
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-mobile { top: 60px; }
  .nav-logo-sub { display: none; }

  /* Hero */
  .hero { padding: 64px 0 56px; }
  .hero-inner { padding: 0 20px; }
  .hero-title { font-size: 1.875rem; line-height: 1.35; }
  .hero-subtitle { font-size: 1.05rem; margin-bottom: 28px; }
  .hero-meta { flex-direction: column; gap: 10px; padding-top: 20px; }
  .hero-cta-row { flex-direction: column; }
  .hero-cta-row .btn-primary,
  .hero-cta-row .btn-outline { width: 100%; }

  /* About */
  .about-pillars { grid-template-columns: 1fr; gap: 16px; }
  .about-pillar { padding: 20px; }

  /* Featured */
  .featured-header { flex-direction: column; align-items: stretch; gap: 16px; }
  .featured-grid { grid-template-columns: 1fr; gap: 14px; }
  .featured-hero-card { padding: 24px; }
  .featured-hero-card h3 { font-size: 1.25rem; }
  .featured-side { flex-direction: column; }

  /* Column */
  .column-header { flex-direction: column; align-items: stretch; gap: 12px; }
  .column-list,
  .column-list-2col { grid-template-columns: 1fr; gap: 12px; }
  .column-item { padding: 20px 20px 18px; }

  /* Methodology */
  .methodology-grid { grid-template-columns: 1fr; gap: 14px; }
  .methodology-step { padding: 22px; }

  /* FAQ */
  .faq-header { margin-bottom: 32px; }
  .faq-item summary { padding: 20px 0; font-size: 1rem; gap: 14px; }
  .faq-icon { font-size: 20px; }
  .faq-answer { font-size: 14px; padding-bottom: 22px; }

  /* Newsletter */
  .newsletter { padding: 56px 0; }
  .newsletter-form { flex-direction: column; gap: 10px; }
  .newsletter-form button { width: 100%; }

  /* Footer */
  .footer { padding: 48px 0 22px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px 16px; margin-bottom: 32px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 12px; }
  .footer-adult { align-self: flex-start; }

  /* Back to top */
  .back-to-top { right: 16px; bottom: 16px; width: 38px; height: 38px; }
}

/* ═══════════════════════════════════════════════════════════════
   Sub-page Hero (smaller than homepage Hero)
   ═══════════════════════════════════════════════════════════════ */
.page-hero {
  padding: 72px 0 56px;
  background: var(--bg);
  border-bottom: 1px solid var(--border-soft);
}
.page-hero-inner {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 32px;
}
.page-hero h1 {
  font-family: 'Noto Serif SC', serif;
  font-size: clamp(1.75rem, 3.5vw, 2.625rem);
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: 0.02em;
  color: var(--ink);
  margin-bottom: 20px;
}
.page-hero-subtitle {
  font-family: 'Noto Serif SC', serif;
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  font-weight: 400;
  font-style: italic;
  line-height: 1.7;
  color: var(--ink-light);
  margin-bottom: 28px;
  max-width: 680px;
}
.page-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 18px;
  border-top: 1px solid var(--border-soft);
  font-size: 13px;
  color: var(--ink-muted);
  letter-spacing: 0.04em;
}
.page-hero-meta strong { color: var(--ink); font-weight: 500; }

/* ─── Breadcrumb ─── */
.breadcrumb-nav {
  padding: 16px 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border-soft);
}
.breadcrumb-nav ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--ink-muted);
  letter-spacing: 0.04em;
}
.breadcrumb-nav li::after {
  content: "/";
  margin-left: 8px;
  color: var(--ink-faint);
}
.breadcrumb-nav li:last-child::after { content: ""; }
.breadcrumb-nav a {
  color: var(--ink-muted);
  border-bottom: none;
}
.breadcrumb-nav a:hover { color: var(--accent); }
.breadcrumb-nav li:last-child {
  color: var(--ink);
  font-weight: 500;
}

/* ─── Body content (for sub-pages with rich text) ─── */
.body-content {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 32px;
}
.body-content h2 {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.625rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  margin: 56px 0 20px;
  color: var(--ink);
  scroll-margin-top: 100px;
}
.body-content h2:first-child { margin-top: 0; }
.body-content h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin: 36px 0 14px;
  color: var(--ink);
}
.body-content p {
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: 0.02em;
  color: var(--ink-light);
  margin-bottom: 18px;
}
.body-content ul,
.body-content ol {
  margin: 14px 0 22px 24px;
  color: var(--ink-light);
}
.body-content li {
  font-size: 15.5px;
  line-height: 1.85;
  margin-bottom: 8px;
}
.body-content blockquote {
  margin: 28px 0;
  padding: 16px 24px;
  background: var(--bg-alt);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  font-size: 15.5px;
  color: var(--ink-light);
  line-height: 1.85;
}
.body-content code {
  background: var(--bg-alt);
  padding: 2px 6px;
  border-radius: 2px;
  font-size: 14px;
  color: var(--accent-deep);
}

/* ═══════════════════════════════════════════════════════════════
   v3.0 杂志型文章排版（替代 v2.x 的模板框架）
   ═══════════════════════════════════════════════════════════════ */
.article-page {
  max-width: 760px;
  margin: 0 auto;
  padding: 64px 32px 80px;
}
.article-head {
  margin-bottom: 48px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
}
.article-head h1 {
  font-family: 'Noto Serif SC', serif;
  font-size: clamp(1.875rem, 4vw, 2.625rem);
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: 0.02em;
  color: var(--ink);
  margin-bottom: 20px;
}
.article-byline {
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 13px;
  color: var(--ink-muted);
  letter-spacing: 0.04em;
  margin: 0;
}
.article-prose h2 {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin: 56px 0 20px;
  color: var(--ink);
  scroll-margin-top: 100px;
}
.article-prose h2:first-child { margin-top: 0; }
.article-prose h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.125rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin: 32px 0 14px;
  color: var(--ink);
}
.article-prose p {
  font-size: 16.5px;
  line-height: 1.95;
  letter-spacing: 0.02em;
  color: var(--ink-light);
  margin-bottom: 20px;
}
.article-prose p strong { color: var(--ink); font-weight: 500; }
.article-prose ul,
.article-prose ol {
  margin: 16px 0 24px 24px;
  color: var(--ink-light);
}
.article-prose li {
  font-size: 16px;
  line-height: 1.9;
  margin-bottom: 10px;
}
.article-prose blockquote {
  margin: 32px 0;
  padding: 18px 24px;
  background: var(--bg-alt);
  border-left: 3px solid var(--accent);
  font-style: italic;
  font-size: 16px;
  color: var(--ink-light);
  line-height: 1.85;
}
.article-prose a {
  color: var(--accent);
  border-bottom: 1px solid var(--border);
  transition: border-color 0.2s;
}
.article-prose a:hover { border-bottom-color: var(--accent); }

.article-foot {
  margin-top: 64px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  font-size: 13.5px;
  color: var(--ink-muted);
  line-height: 1.85;
}
.article-foot p { margin-bottom: 8px; }
.article-foot code { background: var(--bg-alt); padding: 2px 6px; border-radius: 2px; font-size: 13px; }

/* ═══════════════════════════════════════════════════════════════
   延伸阅读 / 相关资源（不作为引用论据，仅作扩展资源）
   ═══════════════════════════════════════════════════════════════ */
.related-resources {
  margin: 56px 0 32px;
  padding: 28px 32px;
  background: var(--bg-alt);
  border-left: 3px solid var(--accent);
  border-radius: 3px;
}
.related-resources h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: 18px;
  font-weight: 500;
  color: var(--ink);
  margin: 0 0 8px;
  letter-spacing: 0.02em;
}
.related-resources-note {
  font-size: 13px;
  color: var(--ink-muted);
  margin: 0 0 18px;
  line-height: 1.7;
  font-style: italic;
}
.related-resources-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 24px;
}
.related-resources-grid ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.related-resources-grid li {
  margin-bottom: 8px;
  font-size: 14px;
  line-height: 1.7;
  padding-left: 14px;
  position: relative;
}
.related-resources-grid li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 13px;
}
.related-resources-grid li a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px dotted var(--ink-muted);
  transition: color 0.2s, border-color 0.2s;
}
.related-resources-grid li a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.related-resources-grid li .res-source {
  display: inline-block;
  font-size: 11px;
  color: var(--ink-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-left: 6px;
  border-bottom: none;
}
.related-resources-grid h4 {
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-muted);
  margin: 0 0 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
@media (max-width: 767px) {
  .related-resources { padding: 20px 18px; margin: 40px 0 24px; }
  .related-resources-grid { grid-template-columns: 1fr; gap: 16px; }
}

/* ═══════════════════════════════════════════════════════════════
   v3.0 对比表格（SEO/GEO 友好）
   ═══════════════════════════════════════════════════════════════ */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 14.5px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.compare-table thead {
  background: var(--bg-deep);
  color: rgba(255,250,240,0.92);
}
.compare-table th {
  padding: 12px 14px;
  text-align: left;
  font-family: 'Noto Sans SC', sans-serif;
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.06em;
  border-right: 1px solid rgba(255,255,255,0.12);
}
.compare-table th:last-child { border-right: none; }
.compare-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-soft);
  border-right: 1px solid var(--border-soft);
  vertical-align: top;
  color: var(--ink-light);
  line-height: 1.7;
}
.compare-table td:first-child {
  font-weight: 500;
  color: var(--ink);
  white-space: nowrap;
}
.compare-table td:last-child { border-right: none; }
.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table tbody tr:hover { background: var(--bg-alt); }

@media (max-width: 767px) {
  .compare-table { font-size: 13px; }
  .compare-table th { padding: 10px 8px; font-size: 12px; }
  .compare-table td { padding: 10px 8px; }
}

/* ═══════════════════════════════════════════════════════════════
   v3.0 Mini CTA（首屏 + 中段，让手机用户提早看到推荐）
   ═══════════════════════════════════════════════════════════════ */

/* 首屏 Hero 下方的轻量 mini-CTA */
.cta-hero-mini {
  margin: 20px 0 0;
  padding: 14px 18px;
  background: var(--accent-bg);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.cta-hero-mini-text {
  flex: 1;
  min-width: 200px;
}
.cta-hero-mini-text strong { color: var(--ink); font-weight: 500; }
.cta-hero-mini-link {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  background: var(--accent);
  color: #fff !important;
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: 0.06em;
  border-radius: var(--radius);
  text-decoration: none;
  border-bottom: none !important;
  white-space: nowrap;
  transition: background 0.2s;
}
.cta-hero-mini-link:hover {
  background: var(--accent-deep);
  color: #fff !important;
  border-bottom: none !important;
}

/* 中段 inline mini-CTA */
.cta-mid {
  margin: 36px 0;
  padding: 22px 24px;
  background: var(--bg-card);
  border: 1px solid var(--accent);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}
.cta-mid h4 {
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 10px;
}
.cta-mid p {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-light);
  margin: 0 0 16px;
}
.cta-mid p:last-of-type { margin-bottom: 14px; }
.cta-mid-link {
  display: inline-flex;
  align-items: center;
  padding: 11px 22px;
  background: var(--accent);
  color: #fff !important;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  border-radius: var(--radius);
  text-decoration: none;
  border-bottom: none !important;
  transition: background 0.2s;
}
.cta-mid-link:hover {
  background: var(--accent-deep);
  color: #fff !important;
  border-bottom: none !important;
}

@media (max-width: 767px) {
  .cta-hero-mini {
    padding: 12px 14px;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }
  .cta-hero-mini-link {
    width: 100%;
    justify-content: center;
    padding: 12px 16px;
  }
  .cta-mid { padding: 18px 18px; margin: 28px 0; }
  .cta-mid-link {
    width: 100%;
    justify-content: center;
    padding: 12px 16px;
  }
}

/* ═══════════════════════════════════════════════════════════════
   v3.0 CTA 模块 · 半激进版
   ═══════════════════════════════════════════════════════════════ */

/* 决策型文章末尾 · 重 CTA */
.cta-action {
  margin: 56px 0 40px;
  padding: 36px 32px 28px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.cta-action h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.375rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink);
  margin-bottom: 14px;
}
.cta-action > p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-light);
  margin-bottom: 12px;
}

.cta-recommend {
  margin-top: 24px;
  padding: 24px 24px 22px;
  background: var(--bg-card);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  border-left: 3px solid var(--accent);
}
.cta-recommend h4 {
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.cta-recommend ul {
  list-style: none;
  margin: 0 0 22px 0;
  padding: 0;
}
.cta-recommend ul li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  color: var(--ink-light);
  line-height: 1.7;
  margin-bottom: 8px;
}
.cta-recommend ul li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
}

.cta-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 16px 28px;
  background: var(--accent);
  color: #fff;
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 15.5px;
  font-weight: 500;
  letter-spacing: 0.08em;
  border: none;
  border-radius: var(--radius);
  text-decoration: none;
  border-bottom: none;
  transition: background 0.2s, transform 0.15s;
  min-height: 56px;
}
.cta-primary:hover {
  background: var(--accent-deep);
  color: #fff;
  border-bottom: none;
  transform: translateY(-1px);
}

.cta-subscribe {
  margin-top: 20px;
  text-align: center;
  font-size: 13.5px;
  color: var(--ink-muted);
}
.cta-subscribe a {
  color: var(--ink-light);
  border-bottom: 1px solid var(--border);
}
.cta-subscribe a:hover { color: var(--accent); border-bottom-color: var(--accent); }

/* 科普型文章末尾 · 轻 CTA */
.cta-soft {
  margin: 48px 0 32px;
  padding: 24px 28px;
  background: var(--bg-alt);
  border-left: 3px solid var(--ink-muted);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.cta-soft p:first-child {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink);
  margin-bottom: 14px;
  text-transform: none;
}
.cta-soft ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.cta-soft ul li {
  font-size: 14.5px;
  line-height: 1.7;
  margin-bottom: 10px;
}
.cta-soft ul li:last-child { margin-bottom: 0; }
.cta-soft a {
  color: var(--accent);
  border-bottom: 1px solid var(--border);
}

@media (max-width: 767px) {
  .article-page { padding: 40px 20px 56px; }
  .article-head h1 { font-size: 1.625rem; }
  .article-prose h2 { font-size: 1.25rem; margin: 40px 0 16px; }
  .article-prose h3 { font-size: 1.0625rem; margin: 24px 0 12px; }
  .article-prose p { font-size: 15.5px; line-height: 1.85; }
  .article-prose li { font-size: 15px; }
  .cta-action { padding: 24px 20px 20px; margin: 40px 0 32px; }
  .cta-action h3 { font-size: 1.1875rem; }
  .cta-recommend { padding: 20px 18px 18px; }
  .cta-primary { font-size: 14.5px; padding: 14px 20px; min-height: 52px; }
}

/* ─── Article lede (取代显性"一句话答案"/"快速结论"标签) ─── */
.article-lede {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.0625rem;
  line-height: 1.85;
  letter-spacing: 0.02em;
  color: var(--ink);
  margin-bottom: 20px;
  padding: 0;
  border: none;
  font-weight: 400;
}
.article-lede strong {
  font-weight: 500;
  color: var(--ink);
}
.article-lede-cont {
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--ink-light);
  margin-bottom: 32px;
}

/* ─── Editor / Principle Cards (for about & methodology) ─── */
.editor-card,
.principle-card {
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  border-top: 2px solid var(--accent);
  margin-bottom: 20px;
}
.editor-card h3,
.principle-card h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.125rem;
  font-weight: 500;
  margin-bottom: 12px;
  color: var(--ink);
}
.editor-card p,
.principle-card p {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-light);
  margin-bottom: 12px;
}
.editor-card .editor-meta,
.principle-card .meta {
  font-size: 12px;
  color: var(--ink-muted);
  letter-spacing: 0.04em;
  padding-top: 10px;
  margin-top: 8px;
  border-top: 1px solid var(--border-soft);
}

/* ─── Subscribe page ─── */
.subscribe-hero {
  text-align: center;
  padding: 80px 0 32px;
}
.subscribe-form-large {
  max-width: 520px;
  margin: 32px auto;
}
.subscribe-form-large .form-group {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.subscribe-form-large input[type="email"] {
  padding: 16px 20px;
  font-size: 15px;
  font-family: inherit;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--ink);
  width: 100%;
}
.subscribe-form-large input[type="email"]:focus {
  border-color: var(--accent);
  outline: none;
}
.subscribe-form-large .checkbox-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 13.5px;
  color: var(--ink-light);
  text-align: left;
}
.subscribe-form-large .checkbox-row label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}
.subscribe-form-large button {
  padding: 14px 28px;
  background: var(--accent);
  color: #fff;
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: 0.04em;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s;
}
.subscribe-form-large button:hover { background: var(--accent-deep); }

/* ─── Column list (full list on column pages) ─── */
.column-full-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
  max-width: 1080px;
  margin: 0 auto;
}
.column-full-item {
  padding: 28px 28px 26px;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s, transform 0.2s;
  border-bottom: 1px solid var(--border-soft);
}
.column-full-item:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.column-full-item.is-hub {
  border-color: var(--accent);
  background: linear-gradient(180deg, var(--accent-bg), var(--bg-card));
  grid-column: span 2;
}
.column-full-item .item-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.column-full-item.is-hub .item-tag {
  color: #fff;
  background: var(--accent);
  padding: 3px 10px;
  border-radius: 2px;
  align-self: flex-start;
}
.column-full-item h2 {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.25rem;
  font-weight: 400;
  line-height: 1.45;
  color: var(--ink);
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}
.column-full-item.is-hub h2 { font-size: 1.5rem; }
.column-full-item p {
  font-size: 14px;
  color: var(--ink-light);
  line-height: 1.8;
  margin-bottom: 16px;
  flex: 1;
}
.column-full-item .item-meta {
  font-size: 12px;
  color: var(--ink-muted);
  letter-spacing: 0.04em;
  padding-top: 14px;
  border-top: 1px solid var(--border-soft);
}

@media (max-width: 767px) {
  .page-hero { padding: 48px 0 40px; }
  .page-hero-inner { padding: 0 20px; }
  .breadcrumb-nav { padding: 12px 0; }
  .breadcrumb-nav ol { padding: 0 20px; }
  .body-content { padding: 0 20px; }
  .body-content h2 { font-size: 1.375rem; margin: 36px 0 16px; }
  .body-content h3 { font-size: 1.125rem; margin: 26px 0 12px; }
  .body-content p { font-size: 15px; line-height: 1.85; }
  .editor-card, .principle-card { padding: 22px; }
  .column-full-list { grid-template-columns: 1fr; gap: 14px; }
  .column-full-item { padding: 22px 22px 20px; }
  .column-full-item.is-hub { grid-column: auto; }
  .column-full-item.is-hub h2 { font-size: 1.25rem; }
  .subscribe-form-large .checkbox-row { flex-direction: column; gap: 10px; }
}

/* ─── Animations ─── */
@media (prefers-reduced-motion: no-preference) {
  .fade-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }
  .fade-up.in-view {
    opacity: 1;
    transform: translateY(0);
  }
}