```css
/* ============================================
   蓝颜tv - 男士潮流生活频道
   Style.css - Complete Stylesheet
   ============================================ */

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --brand: #1a2b4a;
  --brand-deep: #0f1a2e;
  --accent: #2f6fed;
  --accent-light: #5a8ff5;
  --accent-glow: rgba(47, 111, 237, 0.35);
  --bg: #f4f6fa;
  --bg-alt: #eef1f7;
  --text: #1f2430;
  --text-secondary: #3d4553;
  --muted: #5a6472;
  --card: #ffffff;
  --card-hover: #fafbfd;
  --border: #e3e7ee;
  --border-light: #edf0f5;
  --shadow-sm: 0 1px 3px rgba(26, 43, 74, 0.06);
  --shadow-md: 0 4px 16px rgba(26, 43, 74, 0.08);
  --shadow-lg: 0 12px 40px rgba(26, 43, 74, 0.12);
  --shadow-hover: 0 8px 30px rgba(47, 111, 237, 0.15);
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.4);
  --glass-shadow: 0 8px 32px rgba(26, 43, 74, 0.1);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --gradient-hero: linear-gradient(135deg, #1a2b4a 0%, #2f6fed 50%, #5a8ff5 100%);
  --gradient-accent: linear-gradient(135deg, #2f6fed, #5a8ff5);
  --gradient-card: linear-gradient(145deg, rgba(47, 111, 237, 0.04), rgba(90, 143, 245, 0.02));
}

body.dark {
  --brand: #0d1524;
  --brand-deep: #070b14;
  --accent: #4a8af8;
  --accent-light: #6ba3ff;
  --accent-glow: rgba(74, 138, 248, 0.3);
  --bg: #0f141e;
  --bg-alt: #141a26;
  --text: #e6e9ef;
  --text-secondary: #c8cedb;
  --muted: #9aa4b2;
  --card: #1a2130;
  --card-hover: #1f2738;
  --border: #2a3242;
  --border-light: #232b3a;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.45);
  --shadow-hover: 0 8px 30px rgba(74, 138, 248, 0.2);
  --glass-bg: rgba(26, 33, 48, 0.78);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --gradient-hero: linear-gradient(135deg, #0d1524 0%, #1a3a7a 50%, #2f6fed 100%);
  --gradient-card: linear-gradient(145deg, rgba(74, 138, 248, 0.06), rgba(74, 138, 248, 0.01));
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent-light);
}

img,
svg {
  max-width: 100%;
  display: block;
}

::selection {
  background: var(--accent);
  color: #fff;
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-alt);
}

::-webkit-scrollbar-thumb {
  background: var(--muted);
  border-radius: 4px;
  opacity: 0.5;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

/* ---------- Header ---------- */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  transition: background var(--transition), box-shadow var(--transition);
}

body.dark header.site-header {
  background: rgba(13, 21, 36, 0.82);
  border-bottom-color: rgba(255, 255, 255, 0.06);
}

.header-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
  transition: transform var(--transition);
}

.logo:hover {
  transform: scale(1.03);
}

.logo svg {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  box-shadow: 0 2px 8px var(--accent-glow);
  transition: box-shadow var(--transition);
}

.logo:hover svg {
  box-shadow: 0 4px 16px var(--accent-glow);
}

nav.main-nav {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  margin-left: auto;
  align-items: center;
}

nav.main-nav a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  position: relative;
  transition: color var(--transition), background var(--transition);
}

nav.main-nav a:hover {
  color: var(--accent);
  background: rgba(47, 111, 237, 0.08);
}

body.dark nav.main-nav a:hover {
  background: rgba(74, 138, 248, 0.12);
}

.header-tools {
  display: flex;
  gap: 8px;
  align-items: center;
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 4px 6px 4px 14px;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: var(--card);
}

.search-box input {
  border: none;
  background: transparent;
  color: var(--text);
  outline: none;
  width: 120px;
  font-size: 13px;
  font-family: inherit;
  transition: width var(--transition);
}

.search-box input::placeholder {
  color: var(--muted);
}

.search-box input:focus {
  width: 160px;
}

.search-box button {
  border: none;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 16px;
  font-family: inherit;
  transition: background var(--transition), transform var(--transition);
}

.search-box button:hover {
  background: var(--accent-light);
  transform: scale(1.04);
}

.icon-btn {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  cursor: pointer;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.icon-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: rotate(180deg);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.menu-toggle {
  display: none;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  cursor: pointer;
  font-size: 18px;
  transition: all var(--transition);
}

.menu-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  max-width: 1180px;
  margin: 14px auto 0;
  padding: 0 20px;
  font-size: 13px;
  color: var(--muted);
  animation: fadeIn 0.6s ease;
}

.breadcrumb a {
  color: var(--muted);
  transition: color var(--transition);
}

.breadcrumb a:hover {
  color: var(--accent);
}

/* ---------- Hero ---------- */
.hero {
  max-width: 1180px;
  margin: 16px auto 0;
  padding: 0 20px;
}

.hero-inner {
  background: var(--gradient-hero);
  color: #fff;
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero-inner::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-inner::after {
  content: "";
  position: absolute;
  bottom: -40%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-inner h1 {
  font-size: 32px;
  line-height: 1.35;
  margin-bottom: 16px;
  font-weight: 800;
  letter-spacing: -0.02em;
  position: relative;
  z-index: 1;
  animation: slideUp 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.hero-inner p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.88);
  max-width: 760px;
  position: relative;
  z-index: 1;
  line-height: 1.8;
  animation: slideUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.1s both;
}

.hero-tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 22px;
  position: relative;
  z-index: 1;
  animation: slideUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.2s both;
}

.hero-tags span {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 20px;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 500;
  transition: all var(--transition);
  cursor: default;
}

.hero-tags span:hover {
  background: rgba(255, 255, 255, 0.28);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* ---------- Carousel ---------- */
.carousel {
  position: relative;
  margin-top: 24px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

.slides {
  display: flex;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

.slide {
  min-width: 100%;
  padding: 32px 28px;
}

.slide h3 {
  font-size: 20px;
  margin-bottom: 8px;
  font-weight: 700;
  color: var(--text);
  transition: color var(--transition);
}

.slide p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.carousel-dots {
  position: absolute;
  bottom: 14px;
  right: 20px;
  display: flex;
  gap: 8px;
}

.carousel-dots button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: none;
  background: var(--border);
  cursor: pointer;
  transition: all var(--transition);
  padding: 0;
}

.carousel-dots button:hover {
  background: var(--muted);
  transform: scale(1.2);
}

.carousel-dots button.active {
  background: var(--accent);
  width: 24px;
  border-radius: 5px;
  box-shadow: 0 0 8px var(--accent-glow);
}

/* ---------- Anchor Nav ---------- */
.anchor-nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 20px;
  animation: fadeIn 0.8s ease 0.3s both;
}

.anchor-nav a {
  font-size: 13px;
  font-weight: 500;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px 16px;
  color: var(--text-secondary);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.anchor-nav a::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity var(--transition);
  z-index: -1;
}

.anchor-nav a:hover {
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 14px var(--accent-glow);
}

.anchor-nav a:hover::before {
  opacity: 1;
}

/* ---------- Main & Sections ---------- */
main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px 40px;
}

section {
  margin-top: 48px;
  scroll-margin-top: 80px;
}

h2 {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 20px;
  padding-left: 16px;
  border-left: 5px solid var(--accent);
  letter-spacing: -0.02em;
  line-height: 1.3;
  position: relative;
}

h2::after {
  content: "";
  position: absolute;
  left: -5px;
  top: 0;
  bottom: 0;
  width: 5px;
  background: var(--gradient-accent);
  border-radius: 3px;
}

h3 {
  font-size: 19px;
  font-weight: 700;
  margin: 24px 0 12px;
  color: var(--text);
  letter-spacing: -0.01em;
}

h4 {
  font-size: 16px;
  font-weight: 600;
  margin: 16px 0 8px;
  color: var(--brand);
}

body.dark h4 {
  color: var(--accent-light);
}

p {
  margin-bottom: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.muted {
  color: var(--muted);
  font-size: 14px;
}

/* ---------- Grid ---------- */
.grid {
  display: grid;
  gap: 20px;
}

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

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* ---------- Card ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
  background: var(--card-hover);
}

.card:hover::before {
  opacity: 1;
}

.card h3 {
  margin-top: 0;
}

.card h4 {
  color: var(--accent);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ---------- Stat Row ---------- */
.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.stat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 18px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.stat::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 3px;
  background: var(--gradient-accent);
  border-radius: 2px;
  opacity: 0;
  transition: opacity var(--transition), width var(--transition);
}

.stat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}

.stat:hover::after {
  opacity: 1;
  width: 60px;
}

.stat .num {
  font-size: 32px;
  font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.stat .label {
  font-size: 13px;
  color: var(--muted);
  margin-top: 6px;
  font-weight: 500;
}

/* ---------- Article Card ---------- */
.article-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
  position: relative;
  overflow: hidden;
}

.article-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background: var(--gradient-accent);
  transition: height var(--transition);
  border-radius: 0 2px 2px 0;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
  background: var(--card-hover);
}

.article-card:hover::before {
  height: 100%;
}

.article-card h3 {
  font-size: 17px;
  margin: 0;
  font-weight: 700;
  line-height: 1.4;
  transition: color var(--transition);
}

.article-card:hover h3 {
  color: var(--accent);
}

.article-card .meta {
  font-size: 12px;
  color: var(--muted);
  font-weight: 500;
}

.article-card .excerpt {
  font-size: 14px;
  color: var(--muted);
  flex: 1;
  line-height: 1.7;
}

.article-card a.more {
  font-size: 13px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition), color var(--transition);
  align-self: flex-start;
}

.article-card a.more::after {
  content: "→";
  transition: transform var(--transition);
}

.article-card a.more:hover {
  gap: 8px;
  color: var(--accent-light);
}

.article-card a.more:hover::after {
  transform: translateX(3px);
}

/* ---------- FAQ ---------- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.faq-item:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
}

.faq-item.open {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}

.faq-q {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 18px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-family: inherit;
  transition: color var(--transition), background var(--transition);
  line-height: 1.5;
}

.faq-q:hover {
  color: var(--accent);
  background: var(--gradient-card);
}

.faq-item.open .faq-q {
  color: var(--accent);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
  padding: 0 20px;
}

.faq-a p {
  font-size: 14px;
  color: var(--muted);
  padding-bottom: 18px;
  margin: 0;
  line-height: 1.8;
}

.faq-item.open .faq-a {
  max-height: 500px;
}

.faq-item.open .faq-q span.arrow {
  transform: rotate(180deg);
  color: var(--accent);
}

.arrow {
  transition: transform var(--transition), color var(--transition);
  font-size: 12px;
  color: var(--muted);
  flex-shrink: 0;
}

/* ---------- Timeline ---------- */
.timeline {
  border-left: 3px solid var(--accent);
  margin-left: 10px;
  padding-left: 28px;
  position: relative;
}

.timeline-item {
  margin-bottom: 24px;
  position: relative;
  padding: 16px 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.timeline-item:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -38px;
  top: 22px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
  box-shadow: 0 0 0 3px var(--accent-glow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.timeline-item:hover::before {
  transform: scale(1.3);
  box-shadow: 0 0 0 6px var(--accent-glow);
}

.timeline-item h4 {
  margin: 0 0 6px;
  color: var(--text);
  font-size: 16px;
}

.timeline-item p {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
  line-height: 1.7;
}

/* ---------- Steps ---------- */
.steps {
  counter-reset: step;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.steps li {
  position: relative;
  padding: 18px 20px 18px 68px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.steps li:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 20px;
  top: 18px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gradient-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 2px 8px var(--accent-glow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.steps li:hover::before {
  transform: scale(1.1);
  box-shadow: 0 4px 14px var(--accent-glow);
}

.steps li strong {
  display: block;
  margin-bottom: 4px;
  font-size: 15px;
  color: var(--text);
}

.steps li span {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}

/* ---------- Contact List ---------- */
.contact-list {
  list-style: none;
}

.contact-list li {
  margin-bottom: 10px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  padding-left: 4px;
}

.contact-list li:last-child {
  margin-bottom: 0;
}

.contact-list strong {
  color: var(--brand);
  font-weight: 600;
}

body.dark .contact-list strong {
  color: var(--accent-light);
}

/* ---------- Tag ---------- */
.tag {
  display: inline-block;
  background: rgba(47, 111, 237, 0.1);
  color: var(--accent);
  border-radius: 6px;
  padding: 3px 12px;
  font-size: 12px;
  font-weight: 500;
  margin-right: 6px;
  margin-bottom: 6px;
  transition: all var(--transition);
}

.tag:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-1px);
}

/* ---------- Author Box ---------- */
.author-box {
  display: flex;
  gap: 16px;
  align-items: center;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--glass-shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.author-box:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.author-box svg {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 2px 10px var(--accent-glow);
}

.author-box h3 {
  margin: 0 0 6px;
  font-size: 17px;
}

.author-box p.muted {
  margin: 0;
  line-height: 1.7;
}

/* ---------- Footer ---------- */
footer.site-footer {
  background: var(--brand);
  color: #c8d3e6;
  margin-top: 60px;
  padding: 48px 20px 24px;
  position: relative;
  overflow: hidden;
}

footer.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.5;
}

.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 32px;
}

.footer-grid h4 {
  color: #fff;
  margin: 0 0 14px;
  font-size: 15px;
  font-weight: 700;
  position: relative;
  padding-bottom: 8px;
}

.footer-grid h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
}

.footer-grid ul {
  list-style: none;
}

.footer-grid li {
  margin-bottom: 10px;
  font-size: 13px;
  line-height: 1.6;
}

.footer-grid a {
  color: #c8d3e6;
  transition: color var(--transition), padding-left var(--transition);
  position: relative;
}

.footer-grid a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-grid p {
  color: #c8d3e6;
  font-size: 13px;
  line-height: 1.7;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 32px;
  padding-top: 20px;
  font-size: 12px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  color: rgba(200, 211, 230, 0.7);
}

/* ---------- Back Top ---------- */
.back-top {
  position: fixed;
  right: 24px;
  bottom: 28px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--gradient-accent);
  color: #fff;
  border: none;
  font-size: 20px;
  cursor: pointer;
  display: none;
  z-index: 120;
  box-shadow: 0 4px 18px var(--accent-glow);
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
  align-items: center;
  justify-content: center;
}

.back-top.show {
  display: flex;
  animation: fadeInUp 0.4s ease;
}

.back-top:hover {
  transform: translateY(-4px) scale(1.06);
  box-shadow: 0 8px 28px var(--accent-glow);
}

/* ---------- Reveal Animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ---------- Keyframes ---------- */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 var(--accent-glow);
  }
  50% {
    box-shadow: 0 0 0 8px transparent;
  }
}

/* ---------- Focus Visible (Accessibility) ---------- */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- Responsive: 900px ---------- */
@media (max-width: 900px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  nav.main-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 4px;
    padding: 12px 0;
    border-top: 1px solid var(--border);
    margin-top: 8px;
  }

  nav.main-nav.open {
    display: flex;
    animation: fadeIn 0.3s ease;
  }

  nav.main-nav a {
    padding: 10px 14px;
    width: 100%;
    border-radius: var(--radius-sm);
  }

  .menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .search-box input {
    width: 90px;
  }

  .search-box input:focus {
    width: 120px;
  }

  .hero-inner {
    padding: 36px 28px;
  }

  .hero-inner h1 {
    font-size: 26px;
  }

  .header-inner {
    gap: 12px;
  }

  .logo {
    font-size: 18px;
  }
}

/* ---------- Responsive: 600px ---------- */
@media (max-width: 600px) {
  body {
    font-size: 15px;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .stat-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .hero-inner {
    padding: 28px 20px;
    border-radius: var(--radius-lg);
  }

  .hero-inner h1 {
    font-size: 22px;
  }

  .hero-inner p {
    font-size: 14px;
  }

  .hero-tags span {
    font-size: 12px;
    padding: 5px 12px;
  }

  h2 {
    font-size: 21px;
    padding-left: 12px;
    margin-bottom: 16px;
  }

  h2::after {
    width: 4px;
  }

  h3 {
    font-size: 17px;
  }

  .card {
    padding: 18px;
  }

  .article-card {
    padding: 16px;
  }

  .slide {
    padding: 24px 20px;
  }

  .slide h3 {
    font-size: 17px;
  }

  .search-box input {
    width: 70px;
    font-size: 12px;
  }

  .search-box input:focus {
    width: 100px;
  }

  .search-box button {
    padding: 4px 10px;
    font-size: 11px;
  }

  .icon-btn {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }

  .logo svg {
    width: 30px;
    height: 30px;
  }

  .logo {
    font-size: 16px;
  }

  .header-inner {
    padding: 10px 16px;
  }

  .breadcrumb {
    padding: 0 16px;
    font-size: 12px;
  }

  .hero {
    padding: 0 16px;
  }

  main {
    padding: 0 16px 32px;
  }

  section {
    margin-top: 36px;
  }

  .timeline {
    padding-left: 22px;
    margin-left: 6px;
  }

  .timeline-item {
    padding: 14px 16px;
  }

  .timeline-item::before {
    left: -32px;
    width: 12px;
    height: 12px;
  }

  .steps li {
    padding: 16px 16px 16px 60px;
  }

  .steps li::before {
    left: 16px;
    width: 28px;
    height: 28px;
    font-size: 13px;
  }

  .faq-q {
    padding: 14px 16px;
    font-size: 14px;
  }

  .faq-a {
    padding: 0 16px;
  }

  .author-box {
    flex-direction: column;
    text-align: center;
    padding: 18px;
  }

  .author-box svg {
    width: 48px;
    height: 48px;
  }

  .stat .num {
    font-size: 26px;
  }

  .anchor-nav a {
    font-size: 12px;
    padding: 5px 12px;
  }

  .back-top {
    right: 16px;
    bottom: 20px;
    width: 42px;
    height: 42px;
    font-size: 18px;
  }

  footer.site-footer {
    padding: 36px 16px 20px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 6px;
  }
}

/* ---------- Responsive: 380px ---------- */
@media (max-width: 380px) {
  .header-inner {
    gap: 8px;
  }

  .search-box {
    padding: 3px 4px 3px 10px;
  }

  .search-box input {
    width: 60px;
  }

  .hero-inner h1 {
    font-size: 19px;
  }

  .hero-tags {
    gap: 6px;
  }

  .hero-tags span {
    font-size: 11px;
    padding: 4px 10px;
  }
}

/* ---------- Print ---------- */
@media print {
  header.site-header,
  nav.main-nav,
  .header-tools,
  .back-top,
  .carousel-dots,
  .anchor-nav,
  footer.site-footer {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .card,
  .article-card,
  .faq-item,
  .stat {
    border: 1px solid #ccc;
    box-shadow: none;
    break-inside: avoid;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}
```