/* 汤不热 Tumblr — 设计 tokens */
:root {
  --tumblr-navy: #001935;
  --tumblr-blue: #00b8ff;
  --tumblr-blue-dark: #0099d6;
  --tumblr-purple: #7c5cbf;
  --tumblr-pink: #ff4936;
  --tumblr-green: #00cf35;
  --bg-deep: #001020;
  --bg-card: #0a2540;
  --bg-elevated: #112d4a;
  --border: rgba(255, 255, 255, 0.08);
  --text: #ffffff;
  --text-muted: #94a8be;
  --text-soft: #c5d4e3;
  --radius: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --font: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --header-h: 68px;
  --max: 1140px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 40px rgba(0, 184, 255, 0.15);
  /* 首屏浅色模块 */
  --hero-cream: #faf6f5;
  --hero-blue: #3498db;
  --hero-blue-dark: #2980b9;
  --hero-pink: #e91e63;
  --hero-pink-light: #ff6b9d;
  --hero-text: #333333;
  --hero-text-muted: #777777;
  --hero-border: #e8e8e8;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg-deep);
  -webkit-font-smoothing: antialiased;
}

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

.polaroid__photo img,
.discover-thumb img,
.article-cover img,
.list-card__thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-cover {
  margin: 0 0 1.5rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid #eee;
}

.article-cover img {
  aspect-ratio: 16 / 9;
}

.list-card__thumb {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
  border-radius: var(--radius);
  overflow: hidden;
}

a {
  color: var(--tumblr-blue);
  text-decoration: none;
}

a:hover {
  text-decoration: none;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1000;
  padding: 0.75rem 1rem;
  background: var(--tumblr-blue);
  color: var(--tumblr-navy);
  font-weight: 600;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.container {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 1.35rem;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.2;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.2s, background 0.2s, border-color 0.2s, box-shadow 0.2s;
  text-decoration: none;
  white-space: nowrap;
}

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

.btn-sm {
  padding: 0.45rem 1rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 0.85rem 1.75rem;
  font-size: 1rem;
}

.btn-primary {
  background: var(--tumblr-blue);
  color: var(--tumblr-navy);
  border-color: var(--tumblr-blue);
}

.btn-primary:hover {
  background: #33c6ff;
  border-color: #33c6ff;
  box-shadow: 0 4px 20px rgba(0, 184, 255, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.35);
}

.btn-outline:hover {
  border-color: var(--tumblr-blue);
  color: var(--tumblr-blue);
}

.btn-outline-light {
  background: transparent;
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--text-soft);
  border-color: transparent;
  padding-inline: 0.75rem;
}

.btn-ghost:hover {
  color: var(--text);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  height: var(--header-h);
  background: rgba(0, 16, 32, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
  height: var(--header-h);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--text);
  text-decoration: none;
  flex-shrink: 0;
}

.logo:hover {
  color: var(--text);
}

.logo-icon {
  flex-shrink: 0;
}

.logo-text {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo-text em {
  font-style: normal;
  color: var(--tumblr-blue);
  font-weight: 600;
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  display: block;
  padding: 0.45rem 0.85rem;
  color: var(--text-muted);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-toggle--dark span {
  background: var(--hero-text);
}

.nav-toggle--dark {
  border-color: var(--hero-border);
}

/* ── 首屏模块（浅色双栏） ── */
.hero-module {
  background: var(--hero-cream);
  color: var(--hero-text);
}

.site-header--hero {
  position: relative;
  background: var(--hero-cream);
  backdrop-filter: none;
  border-bottom: none;
  height: auto;
  min-height: var(--header-h);
}

.site-header--hero .header-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: auto;
  min-height: var(--header-h);
  padding: 0.65rem 0;
  gap: 1rem;
}

.site-header--hero .logo--hero {
  justify-self: start;
}

.site-header--hero .site-nav--hero {
  justify-self: center;
}

.site-header--hero .header-actions--hero {
  justify-self: end;
}

@media (max-width: 768px) {
  .site-header--hero .header-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
  }
}

.header-gradient-line {
  height: 2px;
  background: linear-gradient(90deg, var(--hero-blue) 0%, var(--hero-pink) 100%);
  opacity: 0.85;
}

.logo--hero {
  color: var(--hero-text);
}

.logo-pin {
  font-size: 1.35rem;
  line-height: 1;
}

.logo--hero .logo-text {
  display: flex;
  align-items: baseline;
  gap: 0.1rem;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.logo-cn {
  background: linear-gradient(135deg, var(--hero-blue) 0%, #5dade2 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-tumblr {
  font-style: italic;
  font-weight: 700;
  background: linear-gradient(135deg, var(--hero-pink) 0%, #c2185b 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}

.site-nav--hero a {
  color: var(--hero-text-muted);
  border-radius: 999px;
  padding: 0.5rem 1rem;
}

.site-nav--hero a:hover {
  color: var(--hero-text);
  background: rgba(52, 152, 219, 0.08);
}

.site-nav--hero a.is-active {
  color: #fff;
  background: var(--hero-blue);
  box-shadow: 0 4px 14px rgba(52, 152, 219, 0.35);
}

.header-actions--hero {
  gap: 0.75rem;
}

.header-search {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 1rem;
  min-width: 180px;
  background: #fff;
  border: 1px solid var(--hero-border);
  border-radius: 999px;
}

.header-search__icon {
  flex-shrink: 0;
  color: #aaa;
  display: block;
}

.header-search input {
  width: 100%;
  border: none;
  outline: none;
  background: transparent;
  font-family: inherit;
  font-size: 0.875rem;
  color: var(--hero-text);
}

.header-search input::placeholder {
  color: #bbb;
}

.btn-hero-register {
  padding: 0.5rem 1.35rem;
  background: var(--hero-blue);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9375rem;
  box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

.btn-hero-register:hover {
  background: var(--hero-blue-dark);
  transform: translateY(-1px);
}

/* Hero 双栏 */
.hero--split {
  padding: 2.5rem 0 3.5rem;
  text-align: left;
  overflow: visible;
}

.hero-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem 3rem;
  align-items: center;
}

.hero-left {
  max-width: 520px;
}

.hero-badge--pink {
  display: inline-block;
  margin: 0 0 1.25rem;
  padding: 0.45rem 1.1rem;
  background: linear-gradient(135deg, #ffb347 0%, var(--hero-pink) 100%);
  border: none;
  border-radius: 999px;
  color: #fff;
  font-size: 0.8125rem;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(233, 30, 99, 0.25);
}

.hero-title--split {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  margin: 0 0 1.25rem;
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.hero-title-blue {
  background: linear-gradient(135deg, var(--hero-blue) 0%, #1abc9c 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title-pink {
  background: linear-gradient(135deg, var(--hero-pink-light) 0%, var(--hero-pink) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc--split {
  max-width: none;
  margin: 0 0 1.75rem;
  color: var(--hero-text-muted);
  font-size: 1rem;
  line-height: 1.8;
}

.hero-actions--split {
  justify-content: flex-start;
  margin-bottom: 2.5rem;
}

.btn-hero-primary {
  background: var(--hero-blue);
  color: #fff;
  border: 2px solid var(--hero-blue);
  border-radius: 8px;
  box-shadow: 0 6px 20px rgba(52, 152, 219, 0.35);
}

.btn-hero-primary:hover {
  background: var(--hero-blue-dark);
  border-color: var(--hero-blue-dark);
  box-shadow: 0 8px 24px rgba(52, 152, 219, 0.4);
}

.btn-hero-secondary {
  background: #fff;
  color: var(--hero-blue);
  border: 2px solid var(--hero-blue);
  border-radius: 8px;
}

.btn-hero-secondary:hover {
  background: rgba(52, 152, 219, 0.06);
  border-color: var(--hero-blue-dark);
  color: var(--hero-blue-dark);
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
}

.hero-stat__value {
  margin: 0 0 0.2rem;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--hero-blue);
  letter-spacing: -0.02em;
}

.hero-stat__label {
  margin: 0;
  color: var(--hero-text-muted);
  font-size: 0.875rem;
}

/* 宝丽来卡片 */
.hero-right {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 380px;
}

.polaroid-stack {
  position: relative;
  width: min(100%, 420px);
  height: 360px;
}

.polaroid {
  position: absolute;
  width: 168px;
  padding: 10px 10px 14px;
  background: #fff;
  border-radius: 4px;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.06);
  color: var(--hero-text);
  text-decoration: none;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.polaroid:hover {
  transform: scale(1.05) rotate(0deg) !important;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.16);
  z-index: 10;
}

.polaroid__photo {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 130px;
  border-radius: 2px;
  font-size: 3rem;
}

.polaroid__photo--blue { background: linear-gradient(145deg, #5dade2, #3498db); }
.polaroid__photo--pink { background: linear-gradient(145deg, #ff8fab, #e91e63); }
.polaroid__photo--yellow { background: linear-gradient(145deg, #ffe082, #ffb300); }
.polaroid__photo--green { background: linear-gradient(145deg, #81c784, #43a047); }

.polaroid__caption {
  margin: 0.65rem 0 0;
  text-align: center;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--hero-text-muted);
}

.polaroid--art {
  top: 0;
  left: 0;
  transform: rotate(-10deg);
  z-index: 2;
}

.polaroid--photo {
  top: 10px;
  right: 0;
  transform: rotate(8deg);
  z-index: 3;
}

.polaroid--design {
  bottom: 20px;
  left: 30px;
  transform: rotate(-6deg);
  z-index: 1;
}

.polaroid--music {
  bottom: 0;
  right: 20px;
  transform: rotate(10deg);
  z-index: 4;
}

/* 首屏以下恢复深色区块 */
.page-home .section.features:not(.features--notes) {
  padding-top: 4rem;
}

/* Hero (旧版保留给内页) */
.hero {
  position: relative;
  padding: 5rem 0 4.5rem;
  overflow: hidden;
  text-align: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(0, 184, 255, 0.18) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 90% 60%, rgba(124, 92, 191, 0.12) 0%, transparent 50%),
    linear-gradient(180deg, var(--tumblr-navy) 0%, var(--bg-deep) 100%);
  pointer-events: none;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.5;
}

.hero-orb--1 {
  width: 400px;
  height: 400px;
  background: rgba(0, 184, 255, 0.2);
  top: -100px;
  left: 10%;
  animation: float 8s ease-in-out infinite;
}

.hero-orb--2 {
  width: 300px;
  height: 300px;
  background: rgba(124, 92, 191, 0.18);
  top: 20%;
  right: 5%;
  animation: float 10s ease-in-out infinite reverse;
}

.hero-orb--3 {
  width: 200px;
  height: 200px;
  background: rgba(255, 73, 54, 0.12);
  bottom: 10%;
  left: 30%;
  animation: float 12s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  margin: 0 0 1.25rem;
  padding: 0.4rem 1rem;
  background: rgba(0, 184, 255, 0.12);
  border: 1px solid rgba(0, 184, 255, 0.25);
  border-radius: 999px;
  color: var(--tumblr-blue);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.hero-title {
  margin: 0 0 1.25rem;
  font-size: clamp(2.25rem, 5.5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.hero-title-accent {
  background: linear-gradient(135deg, var(--tumblr-blue) 0%, #7ecfff 50%, var(--tumblr-purple) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  max-width: 640px;
  margin: 0 auto 2rem;
  color: var(--text-muted);
  font-size: 1.0625rem;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.85rem;
}

/* Stats */
.stats-bar {
  padding: 0 0 3rem;
  margin-top: -1rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  padding: 1.75rem 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.stat-item {
  text-align: center;
}

.stat-value {
  margin: 0 0 0.25rem;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 800;
  color: var(--tumblr-blue);
  letter-spacing: -0.02em;
}

.stat-label {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

/* Sections */
.section {
  padding: 4rem 0;
}

.section-head {
  text-align: center;
  margin-bottom: 2.75rem;
}

.section-title {
  margin: 0 0 0.5rem;
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.section-lead {
  margin: 0;
  color: var(--text-muted);
  font-size: 1.0625rem;
}

/* Categories */
.categories {
  padding-top: 1rem;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 1.75rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  color: var(--text);
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}

.category-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 184, 255, 0.35);
  box-shadow: var(--shadow-glow);
}

.category-icon {
  font-size: 2.25rem;
  line-height: 1;
}

.category-name {
  font-size: 1rem;
  font-weight: 600;
}

/* Features — 便签纸风格 */
.features--notes {
  position: relative;
  background: #ffffff;
  padding: 3.5rem 0 4.5rem;
  color: #333;
}

.features-rainbow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: repeating-linear-gradient(
    90deg,
    #e91e63 0px,
    #e91e63 28px,
    #ffc107 28px,
    #ffc107 56px,
    #3498db 56px,
    #3498db 84px,
    #4caf50 84px,
    #4caf50 112px
  );
}

.section-head--light {
  margin-bottom: 3rem;
}

.section-title--dark {
  color: #2c3e50;
}

.section-lead--muted {
  color: #7f8c8d;
}

.sticky-notes {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 1.75rem;
  flex-wrap: wrap;
  padding-top: 0.5rem;
}

.sticky-note {
  position: relative;
  flex: 1 1 280px;
  max-width: 340px;
  padding: 2.25rem 1.85rem 2rem;
  background: #fefefe;
  border-radius: 4px;
  box-shadow:
    0 2px 4px rgba(0, 0, 0, 0.04),
    0 8px 24px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  color: #333;
  text-decoration: none;
}

.sticky-note:hover {
  transform: rotate(0deg) translateY(-6px) !important;
  box-shadow:
    0 4px 8px rgba(0, 0, 0, 0.06),
    0 16px 36px rgba(0, 0, 0, 0.1);
  z-index: 2;
}

.sticky-note--left {
  transform: rotate(1.5deg);
}

.sticky-note--center {
  transform: rotate(0deg);
}

.sticky-note--right {
  transform: rotate(-1.5deg);
}

.sticky-note__tape {
  position: absolute;
  top: -7px;
  left: 50%;
  transform: translateX(-50%);
  width: 52px;
  height: 16px;
  background: linear-gradient(180deg, #ffe082 0%, #ffc107 100%);
  border-radius: 2px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
  opacity: 0.92;
}

.sticky-note__icon {
  font-size: 2.25rem;
  line-height: 1;
  margin-bottom: 1rem;
}

.sticky-note__title {
  margin: 0 0 0.85rem;
  font-size: 1.2rem;
  font-weight: 700;
  color: #2c3e50;
  letter-spacing: -0.01em;
}

.sticky-note__desc,
.features--notes .feature-desc {
  margin: 0;
  color: #5d6d7e;
  font-size: 0.9375rem;
  line-height: 1.75;
  text-align: left;
}

.page-home .section.features--notes {
  padding-top: 3.5rem;
}

/* Features (旧深色样式，内页备用) */
.features:not(.features--notes) {
  background: linear-gradient(180deg, transparent 0%, rgba(0, 25, 53, 0.5) 50%, transparent 100%);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  padding: 2rem 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform 0.25s, border-color 0.25s;
}

.feature-card:hover {
  transform: translateY(-3px);
  border-color: rgba(0, 184, 255, 0.25);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.feature-title {
  margin: 0 0 0.75rem;
  font-size: 1.25rem;
  font-weight: 700;
}

.feature-desc {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* Discover — 浅色卡片网格 */
.discover--light {
  background: var(--hero-cream);
  padding: 3.5rem 0 4.5rem;
}

.section-head--accent {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.section-head__accent {
  display: block;
  width: 40px;
  height: 4px;
  margin-bottom: 0.85rem;
  background: #ffc107;
  border-radius: 2px;
}

.discover-grid--light {
  gap: 1.75rem;
}

.discover-card--light {
  background: #fff;
  border: none;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.07);
  color: #333;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.28s ease, box-shadow 0.28s ease;
}

.discover-card--light:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}

.discover--light .discover-thumb {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 155px;
  margin: 0;
  clip-path: polygon(
    0 0, 100% 0, 100% 86%,
    93% 95%, 85% 84%, 77% 96%, 69% 85%, 61% 97%, 53% 86%, 45% 98%,
    37% 87%, 29% 96%, 21% 84%, 13% 95%, 5% 88%, 0 94%
  );
}

.discover--light .discover-emoji {
  font-size: 3.5rem;
  line-height: 1;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.discover-thumb--blue { background: #5dade2; }
.discover-thumb--yellow { background: #f9ca55; }
.discover-thumb--purple { background: #a569bd; }
.discover-thumb--pink { background: #f48fb1; }
.discover-thumb--green { background: #66bb6a; }
.discover-thumb--red { background: #ef5350; }

.discover-body--light {
  padding: 1.15rem 1.35rem 1.35rem;
  background: #fff;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.discover-card-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  color: #2c3e50;
}

.discover-meta--light {
  color: #95a5a6;
  font-size: 0.8125rem;
}

.discover-meta--light .discover-author {
  color: #95a5a6;
}

.avatar--blue { background: #3498db; color: #fff; }
.avatar--orange { background: #f39c12; color: #fff; }
.avatar--purple { background: #9b59b6; color: #fff; }
.avatar--pink { background: #e91e63; color: #fff; }
.avatar--green { background: #27ae60; color: #fff; }
.avatar--red { background: #e74c3c; color: #fff; }

.discover--light .avatar {
  width: 26px;
  height: 26px;
  font-size: 0.75rem;
}

.heart-icon {
  color: #e74c3c;
  font-size: 0.875rem;
  margin-right: 0.15rem;
}

.discover--light .discover-likes {
  display: flex;
  align-items: center;
  gap: 0.1rem;
  color: #95a5a6;
}

/* Discover (深色内页备用) */
.discover-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.discover-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.25s, box-shadow 0.25s;
}

.discover-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.discover-thumb {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 140px;
  font-size: 3rem;
}

.discover-thumb--1 { background: linear-gradient(135deg, #1a3a5c 0%, #2d5a87 100%); }
.discover-thumb--2 { background: linear-gradient(135deg, #2a3d5c 0%, #4a6080 100%); }
.discover-thumb--3 { background: linear-gradient(135deg, #3d2a5c 0%, #6b4a87 100%); }
.discover-thumb--4 { background: linear-gradient(135deg, #1a4a3c 0%, #2d7a65 100%); }
.discover-thumb--5 { background: linear-gradient(135deg, #4a3a2a 0%, #876b4a 100%); }
.discover-thumb--6 { background: linear-gradient(135deg, #4a2a3a 0%, #874a6b 100%); }

.discover-body {
  padding: 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.discover-title {
  margin: 0 0 1rem;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.45;
  flex: 1;
}

.discover-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.discover-author {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--tumblr-blue);
  color: var(--tumblr-navy);
  border-radius: 50%;
  font-size: 0.6875rem;
  font-weight: 700;
}

.discover-likes {
  flex-shrink: 0;
}

/* About SEO — 浅色居中 */
.about-seo--light {
  background: #ffffff;
  padding: 4rem 0 4.5rem;
  border: none;
}

.about-seo-container {
  max-width: 900px;
  text-align: center;
}

.about-seo-title--light {
  margin: 0 0 1.75rem;
  line-height: 1.35;
}

.about-seo-text--center {
  margin-bottom: 2.25rem;
}

.about-seo-text--center p {
  margin: 0 0 1.15rem;
  color: #7f8c8d;
  font-size: 0.9375rem;
  line-height: 1.85;
  text-align: center;
}

.about-seo-text--center p:last-child {
  margin-bottom: 0;
}

.about-seo-link {
  color: #3498db;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s;
}

.about-seo-link:hover {
  color: #2980b9;
  text-decoration: underline;
}

.about-seo-divider {
  height: 0;
  margin: 0 auto 2.25rem;
  max-width: 100%;
  border: none;
  border-top: 1px dashed #ddd;
}

.about-feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.about-feature-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1.75rem 1rem;
  background: #f8f8f8;
  border-radius: 10px;
  color: #7f8c8d;
  text-decoration: none;
  transition: background 0.25s, transform 0.25s, box-shadow 0.25s;
}

.about-feature-card:hover {
  background: #f0f0f0;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
  color: #5d6d7e;
}

.about-feature-icon {
  font-size: 2.5rem;
  line-height: 1;
}

.about-feature-label {
  font-size: 0.875rem;
  font-weight: 500;
}

/* About SEO (深色内页备用) */
.about-seo:not(.about-seo--light) {
  background: var(--bg-card);
  border-block: 1px solid var(--border);
}

.about-seo-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2.5rem;
  align-items: start;
}

.about-seo-title {
  margin: 0 0 1rem;
  font-size: 1.5rem;
  font-weight: 700;
}

.about-seo-text p {
  margin: 0 0 1rem;
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.75;
}

.about-seo-text p:last-child {
  margin-bottom: 0;
}

.about-tags {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  list-style: none;
  margin: 0;
  padding: 0;
  min-width: 160px;
}

.about-tag {
  display: inline-block;
  padding: 0.55rem 1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 500;
  white-space: nowrap;
}

/* FAQ — 浅色交替卡片 */
.faq--light {
  background: var(--hero-cream);
  padding: 3.5rem 0 4.5rem;
}

.faq-container {
  max-width: 820px;
}

.faq-list--light {
  max-width: none;
  gap: 1rem;
}

.faq-card {
  padding: 1.35rem 1.5rem 1.35rem 1.25rem;
  border-radius: 10px;
  border: 1px solid rgba(0, 0, 0, 0.05);
  border-left-width: 5px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
}

.faq-card--blue {
  background: #eef6fc;
  border-left-color: #3498db;
}

.faq-card--pink {
  background: #fef0f3;
  border-left-color: #e91e63;
}

.faq-card__head {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.faq-card__q {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  border-radius: 6px;
  color: #fff;
  font-size: 0.875rem;
  font-weight: 700;
  line-height: 1;
}

.faq-card--blue .faq-card__q {
  background: #3498db;
}

.faq-card--pink .faq-card__q {
  background: #e91e63;
}

.faq-card__question {
  margin: 0;
  padding-top: 0.2rem;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.45;
}

.faq-card--blue .faq-card__question {
  color: #2980b9;
}

.faq-card--pink .faq-card__question {
  color: #c2185b;
}

.faq-card__answer {
  padding-left: 2.55rem;
}

.faq-card__answer p {
  margin: 0;
  color: #7f8c8d;
  font-size: 0.9375rem;
  line-height: 1.75;
}

/* FAQ (深色折叠备用) */
.faq-list {
  max-width: 760px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq-item[open] {
  border-color: rgba(0, 184, 255, 0.3);
}

.faq-question {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.15rem 1.35rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: "+";
  margin-left: auto;
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--tumblr-blue);
  transition: transform 0.2s;
}

.faq-item[open] .faq-question::after {
  content: "−";
}

.faq-q {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: rgba(0, 184, 255, 0.15);
  color: var(--tumblr-blue);
  border-radius: 6px;
  font-size: 0.8125rem;
  font-weight: 700;
  flex-shrink: 0;
}

.faq-answer {
  padding: 0 1.35rem 1.15rem 3.85rem;
}

.faq-answer p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* CTA — 便签纸风格（与特色模块一致） */
.cta--notes {
  position: relative;
  background: #ffffff;
  padding: 3.5rem 0 4.5rem;
  color: #333;
}

/* CTA (旧版深色备用) */
.cta-box {
  text-align: center;
  padding: 3.5rem 2rem;
  background:
    radial-gradient(ellipse 70% 80% at 50% 100%, rgba(0, 184, 255, 0.15) 0%, transparent 60%),
    var(--bg-card);
  border: 1px solid rgba(0, 184, 255, 0.2);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-glow);
}

.cta-title {
  margin: 0 0 0.75rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
}

.cta-desc {
  margin: 0 auto 1.75rem;
  max-width: 480px;
  color: var(--text-muted);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.85rem;
}

/* Footer — 深色四栏 */
.site-footer--rich {
  position: relative;
  padding: 0 0 2rem;
  border-top: none;
  background: #2c3a4d;
  color: #8fa3b8;
}

.footer-rainbow {
  height: 6px;
  margin-bottom: 3rem;
  background: repeating-linear-gradient(
    90deg,
    #e91e63 0px,
    #e91e63 26px,
    #ffc107 26px,
    #ffc107 52px,
    #3498db 52px,
    #3498db 78px,
    #26c6da 78px,
    #26c6da 104px
  );
}

.footer-columns {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
}

@media (min-width: 1100px) {
  .footer-columns {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
  }
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.1rem;
}

.footer-logo-text {
  font-size: 1.25rem;
  font-weight: 800;
  color: #7ec8f5;
  letter-spacing: -0.01em;
}

.footer-logo-text em {
  font-style: italic;
  font-weight: 700;
  color: #5dade2;
}

.footer-brand-desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: #8fa3b8;
}

.footer-col__title {
  margin: 0 0 1.15rem;
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: #8fa3b8;
  font-size: 0.875rem;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: #7ec8f5;
}

.footer-disclaimer {
  margin-bottom: 2rem;
  padding: 1.15rem 1.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
}

.footer-disclaimer p {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.85;
  color: #7d92a8;
}

.footer-disclaimer strong {
  color: #a8bccf;
}

.footer-copy--rich {
  width: auto;
  margin: 0;
  padding-top: 0;
  border-top: none;
  color: #6b8099;
  font-size: 0.8125rem;
  text-align: center;
}

/* Footer (旧版备用，内页仍使用) */
.site-footer:not(.site-footer--rich) {
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
  background: var(--tumblr-navy);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.logo--footer .logo-text {
  font-size: 1rem;
}

.footer-tagline {
  margin: 0.35rem 0 0;
  color: var(--text-muted);
  font-size: 0.8125rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.footer-nav a {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer-nav a:hover {
  color: var(--tumblr-blue);
}

.footer-copy {
  width: 100%;
  margin: 0.5rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.8125rem;
  text-align: center;
}

/* Responsive */
@media (max-width: 960px) {
  .hero-split {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .hero-left {
    max-width: none;
    text-align: center;
  }

  .hero-actions--split {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero-right {
    min-height: 320px;
  }

  .polaroid-stack {
    height: 300px;
    width: 340px;
    margin-inline: auto;
  }

  .polaroid {
    width: 140px;
  }

  .polaroid__photo {
    height: 108px;
    font-size: 2.25rem;
  }

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

  .sticky-notes {
    gap: 1.25rem;
  }

  .sticky-note {
    max-width: none;
  }

  .footer-columns {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .footer-col--brand {
    grid-column: 1 / -1;
  }

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

  .about-seo-inner {
    grid-template-columns: 1fr;
  }

  .about-tags {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

@media (max-width: 768px) {
  .header-search {
    display: none;
  }

  .site-header--hero .header-inner {
    flex-wrap: wrap;
  }

  .site-nav--hero {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--hero-cream);
    border-bottom: 1px solid var(--hero-border);
    padding: 1rem;
    transform: translateY(-110%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s, opacity 0.3s, visibility 0.3s;
    z-index: 199;
  }

  .site-nav--hero.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .site-nav--hero ul {
    flex-direction: column;
    align-items: stretch;
  }

  .header-actions--hero .btn-hero-register {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(0, 16, 32, 0.97);
    border-bottom: 1px solid var(--border);
    padding: 1rem;
    transform: translateY(-110%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s, opacity 0.3s, visibility 0.3s;
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
  }

  .site-nav a {
    padding: 0.75rem 1rem;
  }

  .header-actions {
    display: none;
  }

  .hero {
    padding: 3.5rem 0 3rem;
  }

  .stats-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 1.5rem;
  }

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

  .features-grid,
  .discover-grid {
    grid-template-columns: 1fr;
  }

  .sticky-notes {
    flex-direction: column;
    align-items: center;
  }

  .sticky-note {
    width: 100%;
    max-width: 400px;
  }

  .sticky-note--left,
  .sticky-note--right {
    transform: rotate(0deg);
  }

  .section {
    padding: 3rem 0;
  }
}

@media (max-width: 480px) {
  .polaroid-stack {
    width: 280px;
    height: 260px;
  }

  .polaroid {
    width: 118px;
    padding: 8px 8px 10px;
  }

  .polaroid__photo {
    height: 88px;
    font-size: 1.75rem;
  }

  .polaroid--design {
    left: 10px;
  }

  .polaroid--music {
    right: 5px;
  }

  .hero-stats {
    gap: 1.25rem;
  }

  .hero-stat__value {
    font-size: 1.35rem;
  }

  .about-feature-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.85rem;
  }

  .about-feature-card {
    padding: 1.35rem 0.75rem;
  }

  .about-feature-icon {
    font-size: 2rem;
  }

  .faq-card__answer {
    padding-left: 0;
    padding-top: 0.25rem;
  }

  .footer-columns {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .category-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
  }

  .category-card {
    padding: 1.25rem 0.75rem;
  }

  .hero-actions,
  .cta-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-lg {
    width: 100%;
  }
}

/* ── 内页通用 ── */
body.page-inner {
  background: var(--hero-cream);
  color: #333;
}

body.page-inner .site-header--hero {
  position: sticky;
  top: 0;
  z-index: 100;
}

body.page-inner .section {
  background: #fff;
}

body.page-inner .section.discover--light {
  background: var(--hero-cream);
}

body.page-inner .article-page {
  padding: 2.5rem 0 4rem;
}

body.page-inner .page-hero {
  background: #fff;
  border-bottom: 1px solid #eee;
  color: #333;
}

body.page-inner .page-title {
  color: #222;
}

body.page-inner .page-lead {
  color: #666;
}

body.page-inner .page-badge {
  background: rgba(255, 73, 136, 0.1);
  border-color: rgba(255, 73, 136, 0.25);
  color: #ff4988;
}

body.page-inner .list-card {
  background: #fff;
  border-color: #eee;
  color: #333;
}

body.page-inner .list-card h2 {
  color: #222;
}

body.page-inner .step-card {
  background: #fff;
  border-color: #eee;
}

body.page-inner .step-card h2 {
  color: #222;
}

body.page-inner .category-tabs {
  border-top-color: #eee;
}

body.page-inner .category-tabs a {
  background: var(--hero-cream);
  border-color: #eee;
  color: #666;
}

body.page-inner .article-title {
  color: #111;
}

body.page-inner .article-body p,
body.page-inner .article-body h2 {
  color: #111;
}

body.page-inner .article-nav {
  border-top-color: #eee;
}

.page-hero {
  padding: 3.5rem 0 2.5rem;
  text-align: center;
  background:
    radial-gradient(ellipse 70% 50% at 50% 0%, rgba(0, 184, 255, 0.12) 0%, transparent 60%),
    var(--tumblr-navy);
  border-bottom: 1px solid var(--border);
}

.page-badge {
  display: inline-block;
  margin: 0 0 0.85rem;
  padding: 0.35rem 0.9rem;
  background: rgba(0, 184, 255, 0.12);
  border: 1px solid rgba(0, 184, 255, 0.25);
  border-radius: 999px;
  color: var(--tumblr-blue);
  font-size: 0.8125rem;
  font-weight: 600;
}

.page-title {
  margin: 0 0 0.75rem;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.page-lead {
  max-width: 560px;
  margin: 0 auto;
  color: var(--text-muted);
  font-size: 1.0625rem;
  line-height: 1.7;
}

.narrow-content {
  max-width: 720px;
  margin-inline: auto;
}

.page-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

/* 文章页 */
.article-page {
  padding: 2.5rem 0 4rem;
}

.article-meta {
  margin: 0 0 0.75rem;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.article-meta__cat {
  color: inherit;
  text-decoration: none;
  font-weight: 600;
}

.article-meta__cat:hover {
  color: var(--tumblr-blue);
  text-decoration: underline;
}

body.page-inner .text-link {
  color: var(--hero-blue-dark, #2980b9);
  text-decoration: underline;
  text-underline-offset: 2px;
}

body.page-inner .text-link:hover {
  color: var(--tumblr-blue);
}

.article-discover-more {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.article-discover-more__title {
  margin: 0 0 1.25rem;
  font-size: 1.125rem;
  font-weight: 700;
  color: #111;
}

.discover-grid--compact {
  gap: 1.25rem;
}

.article-discover-more__foot {
  margin: 1.25rem 0 0;
  text-align: center;
  font-size: 0.9375rem;
}

.article-discover-more__foot a {
  color: var(--hero-blue-dark, #2980b9);
  font-weight: 600;
  text-decoration: none;
}

.article-discover-more__foot a:hover {
  text-decoration: underline;
}

.article-title {
  margin: 0 0 1.5rem;
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.article-body h2 {
  margin: 2rem 0 0.75rem;
  font-size: 1.25rem;
  font-weight: 700;
}

.article-body p {
  margin: 0 0 1rem;
  color: var(--text-soft);
  line-height: 1.8;
}

.article-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.9375rem;
}

.article-nav a {
  color: var(--tumblr-blue);
}

.article-nav--chain {
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem 1.25rem;
}

.article-related {
  margin-top: 2rem;
  padding: 1.5rem;
  background: var(--hero-cream);
  border: 1px solid #eee;
  border-radius: var(--radius-lg);
}

.article-related__title {
  margin: 0 0 1rem;
  font-size: 1.0625rem;
  font-weight: 700;
  color: #111;
}

.article-related__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.article-related__list a {
  color: #111;
  text-decoration: none;
  line-height: 1.6;
}

.article-related__list a:hover {
  color: var(--tumblr-blue);
  text-decoration: underline;
}

body.page-inner .article-related {
  background: var(--hero-cream);
}

body.page-inner .article-nav--chain a {
  color: var(--hero-blue-dark, #2980b9);
}

/* 列表页 */
.article-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.list-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.25rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  color: var(--text);
  transition: transform 0.2s, border-color 0.2s;
}

.list-card:hover {
  transform: translateY(-2px);
  border-color: rgba(0, 184, 255, 0.3);
}

.list-card__icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.list-card h2 {
  margin: 0 0 0.25rem;
  font-size: 1.0625rem;
  font-weight: 600;
}

.category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.category-tabs a {
  padding: 0.45rem 1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-soft);
  font-size: 0.875rem;
  transition: border-color 0.2s, color 0.2s;
}

.category-tabs a:hover {
  border-color: var(--tumblr-blue);
  color: var(--tumblr-blue);
}

/* 发布指南步骤 */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.step-card {
  padding: 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.step-num {
  display: inline-block;
  margin-bottom: 0.75rem;
  color: var(--tumblr-blue);
  font-size: 1.5rem;
  font-weight: 800;
  opacity: 0.7;
}

.step-card h2 {
  margin: 0 0 0.65rem;
  font-size: 1.125rem;
  font-weight: 700;
}

.step-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.7;
}

@media (max-width: 768px) {
  .steps-grid {
    grid-template-columns: 1fr;
  }

  .article-nav {
    flex-direction: column;
  }
}

/* 站群内链 */
.sg-internal-link {
  color: var(--tumblr-blue);
  text-decoration: underline;
  text-decoration-color: rgba(0, 184, 255, 0.35);
  text-underline-offset: 2px;
}

.sg-internal-link:hover {
  text-decoration-color: var(--tumblr-blue);
}