:root {
  --tx-primary: #e63946;
  --tx-primary-dark: #b91c2c;
  --tx-primary-light: #ff6b7a;
  --tx-accent: #ffb703;
  --tx-accent-2: #fb8500;
  --tx-bg: #faf9f6;
  --tx-bg-alt: #f2f0eb;
  --tx-surface: #ffffff;
  --tx-surface-2: #f7f5f1;
  --tx-text: #1e1e1e;
  --tx-text-secondary: #555555;
  --tx-text-muted: #888888;
  --tx-border: #eaeaea;
  --tx-border-strong: #d5d5d5;
  --tx-shadow-sm: 0 2px 8px rgba(30, 30, 30, 0.04);
  --tx-shadow-md: 0 4px 20px rgba(30, 30, 30, 0.06);
  --tx-shadow-lg: 0 12px 40px rgba(30, 30, 30, 0.1);
  --tx-shadow-glow: 0 4px 16px rgba(230, 57, 70, 0.35);
  --tx-radius-sm: 10px;
  --tx-radius-md: 16px;
  --tx-radius-lg: 24px;
  --tx-radius-xl: 32px;
  --tx-radius-pill: 999px;
  --tx-glass-bg: rgba(255, 255, 255, 0.72);
  --tx-glass-border: rgba(255, 255, 255, 0.5);
  --tx-glass-blur: 18px;
  --tx-nav-height: 64px;
  --tx-transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --tx-transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --tx-transition-slow: 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  --tx-font: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

body.dark {
  --tx-bg: #0f0f12;
  --tx-bg-alt: #16161a;
  --tx-surface: #1a1a1f;
  --tx-surface-2: #212127;
  --tx-text: #ececec;
  --tx-text-secondary: #b5b5b5;
  --tx-text-muted: #8a8a8a;
  --tx-border: #2a2a32;
  --tx-border-strong: #3a3a44;
  --tx-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --tx-shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --tx-shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.55);
  --tx-shadow-glow: 0 4px 20px rgba(230, 57, 70, 0.45);
  --tx-glass-bg: rgba(26, 26, 31, 0.72);
  --tx-glass-border: rgba(255, 255, 255, 0.08);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--tx-nav-height) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--tx-font);
  background: var(--tx-bg);
  color: var(--tx-text);
  line-height: 1.75;
  font-size: 16px;
  transition: background var(--tx-transition-base), color var(--tx-transition-base);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(circle at 12% 8%, rgba(230, 57, 70, 0.08), transparent 42%),
    radial-gradient(circle at 88% 4%, rgba(255, 183, 3, 0.07), transparent 38%),
    radial-gradient(circle at 50% 100%, rgba(251, 133, 0, 0.05), transparent 45%);
  transition: opacity var(--tx-transition-base);
}

body.dark::before {
  background:
    radial-gradient(circle at 12% 8%, rgba(230, 57, 70, 0.14), transparent 42%),
    radial-gradient(circle at 88% 4%, rgba(255, 183, 3, 0.08), transparent 38%),
    radial-gradient(circle at 50% 100%, rgba(251, 133, 0, 0.06), transparent 45%);
}

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

a {
  color: var(--tx-primary);
  text-decoration: none;
  transition: color var(--tx-transition-fast), opacity var(--tx-transition-fast);
}

a:hover {
  color: var(--tx-primary-dark);
}

body.dark a:hover {
  color: var(--tx-primary-light);
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--tx-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

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

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--tx-glass-bg);
  -webkit-backdrop-filter: blur(var(--tx-glass-blur)) saturate(180%);
  backdrop-filter: blur(var(--tx-glass-blur)) saturate(180%);
  border-bottom: 1px solid var(--tx-glass-border);
  transition: background var(--tx-transition-base), border-color var(--tx-transition-base), box-shadow var(--tx-transition-base);
}

.navbar::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(230, 57, 70, 0.35), transparent);
  opacity: 0;
  transition: opacity var(--tx-transition-base);
}

.navbar:hover::after {
  opacity: 1;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--tx-nav-height);
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
  color: var(--tx-text);
  flex-shrink: 0;
  transition: transform var(--tx-transition-fast);
}

.logo:hover {
  transform: scale(1.03);
  color: var(--tx-text);
}

.logo svg {
  width: 36px;
  height: 36px;
  transition: transform var(--tx-transition-slow);
}

.logo:hover svg {
  transform: rotate(90deg);
}

.logo span {
  background: linear-gradient(120deg, var(--tx-primary), var(--tx-accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.nav-links {
  display: flex;
  gap: 26px;
  align-items: center;
  flex: 1;
  justify-content: center;
}

.nav-links a {
  position: relative;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--tx-text-secondary);
  padding: 6px 0;
  white-space: nowrap;
  transition: color var(--tx-transition-fast);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--tx-primary), var(--tx-accent-2));
  border-radius: 2px;
  transform: translateX(-50%);
  transition: width var(--tx-transition-base);
}

.nav-links a:hover {
  color: var(--tx-primary);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-shrink: 0;
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--tx-surface-2);
  border: 1px solid transparent;
  border-radius: var(--tx-radius-pill);
  padding: 4px 6px 4px 14px;
  transition: background var(--tx-transition-base), border-color var(--tx-transition-base), box-shadow var(--tx-transition-base);
}

.search-box:focus-within {
  background: var(--tx-surface);
  border-color: var(--tx-primary);
  box-shadow: 0 0 0 4px rgba(230, 57, 70, 0.12);
}

.search-box input {
  border: none;
  background: transparent;
  padding: 6px 6px;
  font-size: 0.9rem;
  outline: none;
  color: var(--tx-text);
  width: 130px;
  transition: width var(--tx-transition-base);
}

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

.search-box input:focus {
  width: 170px;
}

.search-box button {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
  color: var(--tx-text-muted);
  padding: 4px 8px;
  border-radius: var(--tx-radius-pill);
  transition: color var(--tx-transition-fast), background var(--tx-transition-fast), transform var(--tx-transition-fast);
}

.search-box button:hover {
  color: var(--tx-primary);
  background: rgba(230, 57, 70, 0.08);
  transform: scale(1.1);
}

.theme-toggle {
  background: var(--tx-surface-2);
  border: 1px solid var(--tx-border);
  border-radius: var(--tx-radius-pill);
  padding: 7px 13px;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  color: var(--tx-text);
  transition: background var(--tx-transition-base), border-color var(--tx-transition-base), transform var(--tx-transition-fast), box-shadow var(--tx-transition-base);
}

.theme-toggle:hover {
  border-color: var(--tx-primary);
  box-shadow: var(--tx-shadow-glow);
  transform: translateY(-1px) rotate(-12deg);
}

.theme-toggle:active {
  transform: scale(0.94);
}

.mobile-menu-btn {
  display: none;
  background: var(--tx-surface-2);
  border: 1px solid var(--tx-border);
  border-radius: var(--tx-radius-sm);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  color: var(--tx-text);
  padding: 4px 10px;
  transition: background var(--tx-transition-fast), border-color var(--tx-transition-fast);
}

.mobile-menu-btn:hover {
  border-color: var(--tx-primary);
  color: var(--tx-primary);
}

.breadcrumb {
  font-size: 0.85rem;
  color: var(--tx-text-muted);
  margin: 20px 0 4px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 2px;
}

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

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

.breadcrumb span {
  margin: 0 8px;
  opacity: 0.6;
}

main {
  padding: 20px 0 80px;
}

section {
  margin-bottom: 72px;
  scroll-margin-top: calc(var(--tx-nav-height) + 20px);
}

h1 {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.28;
  margin-bottom: 18px;
  letter-spacing: -0.025em;
  color: var(--tx-text);
}

h2 {
  position: relative;
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 28px;
  padding-bottom: 14px;
  letter-spacing: -0.015em;
  color: var(--tx-text);
  display: inline-block;
}

h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--tx-primary), var(--tx-accent), var(--tx-accent-2));
  background-size: 200% 100%;
  animation: tx-gradient-shift 6s ease infinite;
}

@keyframes tx-gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin: 32px 0 14px;
  color: var(--tx-text);
  position: relative;
  padding-left: 16px;
}

h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35em;
  bottom: 0.35em;
  width: 4px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--tx-primary), var(--tx-accent-2));
}

h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 20px 0 10px;
  color: var(--tx-text);
}

p {
  margin-bottom: 16px;
  text-align: justify;
  color: var(--tx-text-secondary);
  text-justify: inter-ideograph;
  word-break: break-word;
}

strong {
  color: var(--tx-text);
  font-weight: 700;
}

.hero {
  position: relative;
  overflow: hidden;
  border-radius: var(--tx-radius-xl);
  padding: 56px 48px;
  margin-bottom: 56px;
  background:
    linear-gradient(135deg, rgba(255, 245, 245, 0.95) 0%, rgba(255, 224, 224, 0.9) 45%, rgba(255, 236, 210, 0.9) 100%);
  border: 1px solid rgba(230, 57, 70, 0.12);
  box-shadow: var(--tx-shadow-md);
  isolation: isolate;
}

body.dark .hero {
  background:
    linear-gradient(135deg, rgba(42, 20, 24, 0.95) 0%, rgba(30, 12, 16, 0.92) 45%, rgba(40, 24, 12, 0.9) 100%);
  border-color: rgba(230, 57, 70, 0.22);
}

.hero::before {
  content: "";
  position: absolute;
  top: -140px;
  right: -120px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(230, 57, 70, 0.28), transparent 70%);
  filter: blur(10px);
  z-index: -1;
  animation: tx-float 9s ease-in-out infinite;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -160px;
  left: -100px;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 183, 3, 0.24), transparent 70%);
  filter: blur(10px);
  z-index: -1;
  animation: tx-float 11s ease-in-out infinite reverse;
}

@keyframes tx-float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-18px, 22px) scale(1.08); }
}

.hero h1 {
  font-size: 2.7rem;
  max-width: 820px;
  background: linear-gradient(120deg, var(--tx-text) 30%, var(--tx-primary) 75%, var(--tx-accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

body.dark .hero h1 {
  background: linear-gradient(120deg, #ffffff 30%, var(--tx-primary-light) 75%, var(--tx-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.08rem;
  max-width: 760px;
  color: var(--tx-text-secondary);
}

.hero-badge {
  display: inline-block;
  background: linear-gradient(120deg, var(--tx-primary), var(--tx-accent-2));
  color: #fff;
  padding: 6px 16px;
  border-radius: var(--tx-radius-pill);
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: 0.6px;
  box-shadow: var(--tx-shadow-glow);
  transition: transform var(--tx-transition-fast), box-shadow var(--tx-transition-base);
}

.hero-badge:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 8px 24px rgba(230, 57, 70, 0.45);
}

.hero-stats {
  display: flex;
  gap: 44px;
  margin-top: 36px;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
  position: relative;
  padding-left: 16px;
}

.stat-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--tx-primary), var(--tx-accent-2));
  opacity: 0.7;
}

.stat-number {
  font-size: 2.1rem;
  font-weight: 800;
  line-height: 1.15;
  color: var(--tx-primary);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  transition: color var(--tx-transition-base);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--tx-text-muted);
  margin-top: 2px;
}

.carousel {
  position: relative;
  border-radius: var(--tx-radius-lg);
  overflow: hidden;
  background: var(--tx-surface);
  box-shadow: var(--tx-shadow-md);
  margin-bottom: 56px;
  border: 1px solid var(--tx-border);
  transition: box-shadow var(--tx-transition-base);
}

.carousel:hover {
  box-shadow: var(--tx-shadow-lg);
}

.carousel-track {
  display: flex;
  transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}

.carousel-slide {
  min-width: 100%;
  padding: 52px 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 300px;
  position: relative;
  overflow: hidden;
}

.carousel-slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 55%, rgba(255, 255, 255, 0.25));
  pointer-events: none;
}

body.dark .carousel-slide::after {
  background: linear-gradient(120deg, transparent 55%, rgba(255, 255, 255, 0.04));
}

.carousel-slide h3 {
  font-size: 1.55rem;
  margin: 0 0 14px;
  padding-left: 0;
  color: var(--tx-text);
}

.carousel-slide h3::before {
  display: none;
}

.carousel-slide p {
  max-width: 640px;
  margin-bottom: 0;
  font-size: 1rem;
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: var(--tx-glass-bg);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--tx-glass-border);
  width: 46px;
  height: 46px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.4rem;
  line-height: 1;
  color: var(--tx-text);
  box-shadow: var(--tx-shadow-md);
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--tx-transition-fast), transform var(--tx-transition-fast), box-shadow var(--tx-transition-base), color var(--tx-transition-fast);
}

.carousel-btn:hover {
  background: var(--tx-primary);
  color: #fff;
  box-shadow: var(--tx-shadow-glow);
}

.carousel-btn:active {
  transform: translateY(-50%) scale(0.92);
}

.carousel-btn.prev {
  left: 18px;
}

.carousel-btn.next {
  right: 18px;
}

.carousel-btn.prev:hover {
  transform: translateY(-50%) translateX(-3px);
}

.carousel-btn.next:hover {
  transform: translateY(-50%) translateX(3px);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 26px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 26px;
}

.card {
  position: relative;
  background: var(--tx-surface);
  border-radius: var(--tx-radius-lg);
  padding: 30px;
  border: 1px solid var(--tx-border);
  box-shadow: var(--tx-shadow-sm);
  overflow: hidden;
  transition: transform var(--tx-transition-base), box-shadow var(--tx-transition-base), border-color var(--tx-transition-base);
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--tx-primary), var(--tx-accent), var(--tx-accent-2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--tx-transition-slow);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--tx-shadow-lg);
  border-color: rgba(230, 57, 70, 0.25);
}

.card:hover::before {
  transform: scaleX(1);
}

.card svg {
  width: 48px;
  height: 48px;
  margin-bottom: 18px;
  transition: transform var(--tx-transition-base);
}

.card:hover svg {
  transform: scale(1.1) rotate(-4deg);
}

.card h4 {
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 1.15rem;
}

.card p {
  margin-bottom: 0;
  font-size: 0.95rem;
}

.card p:last-child {
  margin-bottom: 0;
}

.faq-list {
  border-top: 1px solid var(--tx-border);
}

.faq-item {
  border-bottom: 1px solid var(--tx-border);
  transition: background var(--tx-transition-base);
}

.faq-item:hover {
  background: var(--tx-surface-2);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 16px;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--tx-text);
  transition: color var(--tx-transition-fast);
  user-select: none;
}

.faq-question:hover {
  color: var(--tx-primary);
}

.faq-question span {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--tx-primary);
  font-size: 1.3rem;
  line-height: 1;
  border-radius: 50%;
  background: rgba(230, 57, 70, 0.08);
  transition: transform var(--tx-transition-base), background var(--tx-transition-fast), color var(--tx-transition-fast);
}

.faq-item.open .faq-question span {
  transform: rotate(45deg);
  background: var(--tx-primary);
  color: #fff;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s cubic-bezier(0.22, 1, 0.36, 1), padding var(--tx-transition-base), opacity var(--tx-transition-base);
  padding: 0 16px;
  opacity: 0;
  color: var(--tx-text-secondary);
}

.faq-answer p {
  margin-bottom: 0;
  font-size: 0.95rem;
}

.faq-item.open .faq-answer {
  max-height: 600px;
  padding: 0 16px 22px;
  opacity: 1;
}

.article-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.article-item {
  position: relative;
  display: flex;
  gap: 24px;
  background: var(--tx-surface);
  border-radius: var(--tx-radius-md);
  padding: 26px;
  border: 1px solid var(--tx-border);
  overflow: hidden;
  transition: box-shadow var(--tx-transition-base), transform var(--tx-transition-base), border-color var(--tx-transition-base);
}

.article-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--tx-primary), var(--tx-accent-2));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--tx-transition-slow);
}

.article-item:hover {
  box-shadow: var(--tx-shadow-lg);
  transform: translateX(4px);
  border-color: rgba(230, 57, 70, 0.2);
}

.article-item:hover::before {
  transform: scaleY(1);
}

.article-item > div {
  flex: 1;
  min-width: 0;
}

.article-meta {
  font-size: 0.78rem;
  color: var(--tx-text-muted);
  margin-bottom: 8px;
  letter-spacing: 0.3px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.article-meta::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--tx-primary);
  flex-shrink: 0;
}

.article-item h4 {
  margin: 0 0 10px;
  font-size: 1.12rem;
  line-height: 1.5;
  transition: color var(--tx-transition-fast);
}

.article-item:hover h4 {
  color: var(--tx-primary);
}

.article-item p {
  margin-bottom: 12px;
  font-size: 0.94rem;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--tx-primary);
  transition: gap var(--tx-transition-fast), color var(--tx-transition-fast);
}

.read-more:hover {
  gap: 8px;
  color: var(--tx-primary-dark);
}

.author-box {
  display: flex;
  align-items: center;
  gap: 18px;
  background: var(--tx-surface-2);
  border: 1px solid var(--tx-border);
  border-radius: var(--tx-radius-md);
  padding: 22px;
  margin: 36px 0;
  transition: box-shadow var(--tx-transition-base), transform var(--tx-transition-base);
}

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

.author-avatar {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--tx-primary), var(--tx-accent-2));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 1.4rem;
  flex-shrink: 0;
  box-shadow: var(--tx-shadow-glow);
}

.author-info {
  min-width: 0;
}

.author-info strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 4px;
}

.author-info p {
  margin: 0 0 4px;
  font-size: 0.88rem;
  color: var(--tx-text-muted);
  text-align: left;
}

.author-info p:last-child {
  margin-bottom: 0;
  font-size: 0.85rem;
  line-height: 1.6;
}

.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--tx-primary), var(--tx-accent-2));
  color: #fff;
  border: none;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  box-shadow: var(--tx-shadow-glow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.9);
  transition: opacity var(--tx-transition-base), visibility var(--tx-transition-base), transform var(--tx-transition-base), box-shadow var(--tx-transition-base);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.back-to-top:hover {
  transform: translateY(-4px) scale(1.06);
  box-shadow: 0 10px 28px rgba(230, 57, 70, 0.5);
}

.back-to-top:active {
  transform: translateY(-2px) scale(0.96);
}

footer {
  position: relative;
  background: linear-gradient(180deg, #1a1a1a 0%, #101010 100%);
  color: #ccc;
  padding: 64px 0 32px;
  margin-top: 48px;
  overflow: hidden;
}

body.dark footer {
  background: linear-gradient(180deg, #0a0a0c 0%, #050506 100%);
}

footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--tx-primary), var(--tx-accent), var(--tx-accent-2), var(--tx-primary));
  background-size: 300% 100%;
  animation: tx-gradient-shift 8s linear infinite;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 44px;
}

.footer-col h5 {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h5::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--tx-primary), var(--tx-accent-2));
}

.footer-col a,
.footer-col p {
  color: #999;
  font-size: 0.9rem;
  display: block;
  margin-bottom: 10px;
  line-height: 1.7;
  text-align: left;
  transition: color var(--tx-transition-fast), transform var(--tx-transition-fast);
}

.footer-col a {
  position: relative;
  padding-left: 0;
}

.footer-col a:hover {
  color: var(--tx-primary-light);
  transform: translateX(4px);
}

.footer-bottom {
  border-top: 1px solid #2a2a2a;
  padding-top: 26px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: #777;
}

.footer-bottom a {
  color: #999;
  transition: color var(--tx-transition-fast);
}

.footer-bottom a:hover {
  color: var(--tx-primary-light);
}

.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--tx-transition-slow), transform var(--tx-transition-slow);
  will-change: opacity, transform;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

img.lazy {
  opacity: 0;
  transition: opacity 0.45s ease;
}

img.lazy.loaded {
  opacity: 1;
}

@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;
  }

  .fade-in {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 1024px) {
  .nav-links {
    gap: 18px;
  }

  .nav-links a {
    font-size: 0.9rem;
  }

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

  .search-box input:focus {
    width: 130px;
  }

  .hero {
    padding: 48px 36px;
  }

  .hero h1 {
    font-size: 2.3rem;
  }

  .hero-stats {
    gap: 32px;
  }
}

@media (max-width: 768px) {
  :root {
    --tx-nav-height: 60px;
  }

  body {
    font-size: 15px;
  }

  .container {
    padding: 0 16px;
  }

  .nav-inner {
    padding: 0 16px;
  }

  .nav-links {
    display: none;
  }

  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--tx-nav-height);
    left: 0;
    right: 0;
    background: var(--tx-glass-bg);
    -webkit-backdrop-filter: blur(var(--tx-glass-blur)) saturate(180%);
    backdrop-filter: blur(var(--tx-glass-blur)) saturate(180%);
    padding: 18px 20px 24px;
    border-bottom: 1px solid var(--tx-border);
    gap: 6px;
    align-items: stretch;
    box-shadow: var(--tx-shadow-lg);
    animation: tx-slide-down 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  }

  @keyframes tx-slide-down {
    from {
      opacity: 0;
      transform: translateY(-12px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .nav-links.mobile-open a {
    padding: 12px 14px;
    border-radius: var(--tx-radius-sm);
    font-size: 0.98rem;
    color: var(--tx-text);
  }

  .nav-links.mobile-open a::after {
    display: none;
  }

  .nav-links.mobile-open a:hover {
    background: var(--tx-surface-2);
    color: var(--tx-primary);
  }

  .mobile-menu-btn {
    display: block;
  }

  .search-box {
    display: none;
  }

  .logo {
    font-size: 1.08rem;
  }

  .logo svg {
    width: 32px;
    height: 32px;
  }

  main {
    padding: 12px 0 60px;
  }

  section {
    margin-bottom: 52px;
  }

  h1 {
    font-size: 1.85rem;
  }

  h2 {
    font-size: 1.45rem;
    margin-bottom: 22px;
  }

  h3 {
    font-size: 1.15rem;
    margin: 26px 0 12px;
  }

  .hero {
    padding: 32px 22px;
    border-radius: var(--tx-radius-lg);
    margin-bottom: 40px;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .hero p {
    font-size: 0.98rem;
  }

  .hero-stats {
    gap: 24px;
    margin-top: 28px;
  }

  .stat-number {
    font-size: 1.7rem;
  }

  .stat-item {
    padding-left: 12px;
  }

  .carousel {
    border-radius: var(--tx-radius-md);
    margin-bottom: 40px;
  }

  .carousel-slide {
    padding: 32px 22px;
    min-height: 240px;
  }

  .carousel-slide h3 {
    font-size: 1.25rem;
  }

  .carousel-slide p {
    font-size: 0.94rem;
  }

  .carousel-btn {
    width: 38px;
    height: 38px;
    font-size: 1.2rem;
  }

  .carousel-btn.prev {
    left: 10px;
  }

  .carousel-btn.next {
    right: 10px;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .card {
    padding: 24px;
    border-radius: var(--tx-radius-md);
  }

  .article-item {
    flex-direction: column;
    gap: 12px;
    padding: 22px;
  }

  .article-item:hover {
    transform: none;
  }

  .article-item h4 {
    font-size: 1.05rem;
  }

  .author-box {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 20px;
  }

  .author-info p {
    text-align: left;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    font-size: 1.2rem;
  }

  footer {
    padding: 48px 0 26px;
    margin-top: 36px;
  }

  .footer-grid {
    gap: 28px;
    margin-bottom: 32px;
  }

  .footer-col a:hover {
    transform: none;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 8px;
  }

  .faq-question {
    padding: 16px 12px;
    font-size: 0.98rem;
  }

  .faq-answer {
    padding: 0 12px;
  }

  .faq-item.open .faq-answer {
    padding: 0 12px 18px;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 26px 18px;
  }

  .hero h1 {
    font-size: 1.55rem;
    line-height: 1.35;
  }

  .hero-badge {
    font-size: 0.72rem;
    padding: 5px 12px;
  }

  .hero-stats {
    gap: 18px;
  }

  .stat-number {
    font-size: 1.5rem;
  }

  .stat-label {
    font-size: 0.78rem;
  }

  .carousel-slide {
    padding: 26px 18px;
  }

  .carousel-slide h3 {
    font-size: 1.12rem;
  }

  .card {
    padding: 20px;
  }

  .article-item {
    padding: 18px;
  }

  .theme-toggle {
    padding: 6px 10px;
  }
}

@media print {
  .navbar,
  .back-to-top,
  .carousel-btn,
  .theme-toggle,
  .mobile-menu-btn,
  .search-box,
  footer {
    display: none !important;
  }

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

  .card,
  .article-item,
  .hero,
  .carousel {
    box-shadow: none;
    border: 1px solid #ccc;
  }
}