:root {
  --primary: #e63946;
  --primary-dark: #a4161a;
  --primary-light: #ff6b7a;
  --primary-glow: rgba(230, 57, 70, 0.35);
  --accent: #ff8fa3;
  --bg: #fafafa;
  --bg-alt: #ffffff;
  --bg-soft: #fff5f5;
  --text: #2b2b2b;
  --text-light: #666;
  --text-muted: #999;
  --border: #ececec;
  --border-light: #f0f0f0;
  --card-bg: #ffffff;
  --card-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
  --card-shadow-hover: 0 12px 32px rgba(230, 57, 70, 0.12);
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.4);
  --glass-blur: 14px;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.2s ease;
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
}

body.dark {
  --primary: #ff6b7a;
  --primary-dark: #e63946;
  --primary-light: #ff8fa3;
  --primary-glow: rgba(255, 107, 122, 0.3);
  --bg: #121212;
  --bg-alt: #1a1a1a;
  --bg-soft: #231518;
  --text: #d9d9d9;
  --text-light: #b0b0b0;
  --text-muted: #808080;
  --border: #2c2c2c;
  --border-light: #252525;
  --card-bg: #1f1f1f;
  --card-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
  --card-shadow-hover: 0 12px 32px rgba(255, 107, 122, 0.15);
  --glass-bg: rgba(31, 31, 31, 0.75);
  --glass-border: rgba(255, 255, 255, 0.08);
}

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

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

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.8;
  font-size: 16px;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

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

::selection {
  background: var(--primary-glow);
  color: var(--text);
}

/* ===== Header ===== */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
  box-shadow: 0 1px 12px rgba(0, 0, 0, 0.05);
  transition: background var(--transition), border-color var(--transition);
}

body.dark header.site-header {
  background: var(--glass-bg);
  border-color: var(--border);
  box-shadow: 0 1px 12px rgba(0, 0, 0, 0.3);
}

.nav-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 12px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 20px;
  color: var(--primary);
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.logo:hover {
  text-decoration: none;
  transform: scale(1.03);
}

.logo svg {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.logo:hover svg {
  transform: rotate(-6deg) scale(1.08);
  box-shadow: 0 4px 16px var(--primary-glow);
}

nav.main-nav ul {
  display: flex;
  gap: 20px;
  list-style: none;
}

nav.main-nav a {
  color: var(--text);
  font-size: 15px;
  position: relative;
  padding: 4px 0;
  transition: color var(--transition-fast);
}

nav.main-nav a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: 2px;
  transition: width var(--transition);
}

nav.main-nav a:hover {
  color: var(--primary);
  text-decoration: none;
}

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

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

.search-box {
  display: flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  background: var(--card-bg);
  transition: border-color var(--transition), box-shadow var(--transition);
}

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

.search-box input {
  border: 0;
  padding: 7px 14px;
  outline: none;
  font-size: 14px;
  width: 150px;
  background: transparent;
  color: var(--text);
  font-family: var(--font);
}

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

.search-box button {
  border: 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  padding: 7px 16px;
  cursor: pointer;
  font-size: 14px;
  font-family: var(--font);
  transition: filter var(--transition-fast), transform var(--transition-fast);
}

.search-box button:hover {
  filter: brightness(1.1);
}

.search-box button:active {
  transform: scale(0.96);
}

.menu-toggle {
  display: none;
  background: none;
  border: 0;
  cursor: pointer;
  font-size: 22px;
  color: var(--primary);
  padding: 4px;
  transition: transform var(--transition-fast);
}

.menu-toggle:active {
  transform: scale(0.9);
}

.theme-toggle {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 34px;
  height: 34px;
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.theme-toggle:hover {
  transform: rotate(20deg) scale(1.1);
  border-color: var(--primary);
  box-shadow: 0 0 12px var(--primary-glow);
}

/* ===== Container ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  font-size: 13px;
  color: var(--text-muted);
  padding: 14px 0;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

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

.breadcrumb a:hover {
  color: var(--primary);
  text-decoration: none;
}

/* ===== Banner ===== */
.banner {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  margin: 10px 0 34px;
  background: linear-gradient(135deg, #e63946 0%, #c1121f 40%, #a4161a 70%, #780000 100%);
  color: #fff;
  min-height: 280px;
  box-shadow: 0 16px 48px rgba(230, 57, 70, 0.25);
}

.banner::before {
  content: "";
  position: absolute;
  top: -60%;
  right: -20%;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.18) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: floatOrb 8s ease-in-out infinite;
}

.banner::after {
  content: "";
  position: absolute;
  bottom: -40%;
  left: -10%;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(255, 143, 163, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: floatOrb 10s ease-in-out infinite reverse;
}

@keyframes floatOrb {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-20px, 20px) scale(1.08); }
}

.slide {
  display: none;
  padding: 52px 44px;
  position: relative;
  z-index: 2;
}

.slide.active {
  display: block;
  animation: fadeSlide 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeSlide {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.slide h2 {
  font-size: 30px;
  margin-bottom: 14px;
  color: #fff;
  border: none;
  padding: 0;
  line-height: 1.4;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

.slide p {
  font-size: 16px;
  max-width: 720px;
  opacity: 0.95;
  line-height: 1.9;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.1);
}

.slide .cta {
  display: inline-block;
  margin-top: 22px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  color: var(--primary-dark);
  padding: 11px 30px;
  border-radius: 26px;
  font-weight: 700;
  font-size: 15px;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.slide .cta:hover {
  text-decoration: none;
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.25);
  background: #fff;
}

.slide .cta:active {
  transform: translateY(-1px) scale(0.99);
}

.banner-dots {
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 3;
}

.banner-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.45);
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
}

.banner-dots span:hover {
  background: rgba(255, 255, 255, 0.75);
  transform: scale(1.2);
}

.banner-dots span.active {
  background: #fff;
  width: 28px;
  border-radius: 6px;
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.5);
}

/* ===== Sections ===== */
section {
  margin-bottom: 50px;
  scroll-margin-top: 80px;
}

h1 {
  font-size: 30px;
  line-height: 1.45;
  margin-bottom: 18px;
  color: var(--text);
  font-weight: 800;
  letter-spacing: -0.5px;
}

h2 {
  font-size: 24px;
  margin: 36px 0 18px;
  color: var(--text);
  border-left: 5px solid var(--primary);
  padding-left: 14px;
  line-height: 1.4;
  font-weight: 700;
  position: relative;
}

h2::after {
  content: "";
  position: absolute;
  left: 14px;
  bottom: -6px;
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), transparent);
  border-radius: 2px;
}

h3 {
  font-size: 19px;
  margin: 26px 0 10px;
  color: var(--text);
  font-weight: 700;
}

h4 {
  font-size: 16px;
  margin: 18px 0 8px;
  color: var(--text-light);
  font-weight: 600;
}

p {
  margin-bottom: 14px;
  text-align: justify;
  color: var(--text);
}

.lead {
  font-size: 17px;
  color: var(--text-light);
  background: linear-gradient(135deg, var(--bg-soft), var(--card-bg));
  border-left: 4px solid var(--primary);
  padding: 18px 20px;
  border-radius: 0 var(--radius) var(--radius) 0;
  position: relative;
  overflow: hidden;
  box-shadow: var(--card-shadow);
}

.lead::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

/* ===== Cards ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: var(--card-shadow);
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--primary-glow);
}

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

.card h3 {
  margin-top: 0;
  margin-bottom: 10px;
  color: var(--primary);
}

.card p {
  font-size: 15px;
  color: var(--text-light);
  margin-bottom: 0;
}

/* ===== Stats ===== */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 20px;
  text-align: center;
  margin: 28px 0;
}

.stat {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 12px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: var(--card-shadow);
}

.stat::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  transition: width var(--transition);
  border-radius: 3px 3px 0 0;
}

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

.stat:hover::after {
  width: 60%;
}

.stat .num {
  font-size: 34px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
  display: block;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat .label {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 8px;
  display: block;
}

/* ===== Article ===== */
article {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  box-shadow: var(--card-shadow);
  position: relative;
}

article:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--primary-glow);
}

article h3 {
  margin-top: 0;
  color: var(--text);
  transition: color var(--transition-fast);
}

article:hover h3 {
  color: var(--primary);
}

.article-meta {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.article-meta::before {
  content: "📅";
  font-size: 12px;
}

.read-more {
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition), color var(--transition-fast);
}

.read-more:hover {
  gap: 8px;
  text-decoration: none;
}

/* ===== FAQ ===== */
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
  box-shadow: var(--card-shadow);
}

.faq-item:hover {
  border-color: var(--primary-glow);
  box-shadow: 0 4px 16px var(--primary-glow);
}

.faq-item.open {
  border-color: var(--primary);
  box-shadow: 0 4px 20px var(--primary-glow);
}

.faq-q {
  width: 100%;
  text-align: left;
  background: none;
  border: 0;
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text);
  font-family: var(--font);
  transition: color var(--transition-fast), background var(--transition-fast);
  gap: 12px;
}

.faq-q:hover {
  color: var(--primary);
  background: var(--bg-soft);
}

.faq-q .arrow {
  transition: transform var(--transition);
  color: var(--primary);
  font-size: 14px;
  flex-shrink: 0;
}

.faq-item.open .arrow {
  transform: rotate(180deg);
}

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

.faq-item.open .faq-a {
  max-height: 600px;
  padding-bottom: 18px;
}

.faq-a p {
  margin-bottom: 8px;
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.85;
}

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

/* ===== HowTo Steps ===== */
.howto-step {
  display: flex;
  gap: 18px;
  margin-bottom: 20px;
  align-items: flex-start;
  padding: 16px;
  border-radius: var(--radius);
  background: var(--card-bg);
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  box-shadow: var(--card-shadow);
}

.howto-step:hover {
  transform: translateX(6px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--primary-glow);
}

.howto-step .idx {
  flex: 0 0 40px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
  box-shadow: 0 4px 14px var(--primary-glow);
  transition: transform var(--transition);
}

.howto-step:hover .idx {
  transform: scale(1.1) rotate(-8deg);
}

.howto-step h4 {
  margin: 0 0 4px;
  color: var(--text);
  font-size: 16px;
}

.howto-step p {
  margin-bottom: 0;
  font-size: 15px;
  color: var(--text-light);
}

/* ===== Table ===== */
table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 20px 0;
  font-size: 15px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border);
}

th,
td {
  border-bottom: 1px solid var(--border);
  padding: 12px 16px;
  text-align: left;
}

th {
  background: linear-gradient(135deg, var(--bg-soft), var(--card-bg));
  color: var(--primary-dark);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.3px;
  border-bottom: 2px solid var(--primary);
}

body.dark th {
  background: linear-gradient(135deg, #2a1a1a, #1f1f1f);
  color: var(--primary-light);
}

tr:last-child td {
  border-bottom: none;
}

tbody tr {
  transition: background var(--transition-fast);
}

tbody tr:hover {
  background: var(--bg-soft);
}

body.dark tbody tr:hover {
  background: #231518;
}

/* ===== Testimonial ===== */
.testimonial {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 22px 20px;
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  box-shadow: var(--card-shadow);
  overflow: hidden;
}

.testimonial::before {
  content: """;
  font-size: 60px;
  color: var(--primary-glow);
  position: absolute;
  top: 10px;
  left: 18px;
  line-height: 1;
  font-family: Georgia, serif;
  z-index: 0;
}

.testimonial::after {
  content: "";
  position: absolute;
  bottom: 0;
  right: 0;
  width: 80px;
  height: 80px;
  background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.testimonial:hover {
  transform: translateY(-5px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--primary-glow);
}

.testimonial p {
  position: relative;
  z-index: 1;
  padding-top: 16px;
  font-size: 15px;
  color: var(--text-light);
  font-style: italic;
}

.testimonial .who {
  font-size: 14px;
  color: var(--primary);
  margin-top: 12px;
  font-weight: 600;
  font-style: normal;
}

/* ===== Contact ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.contact-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  box-shadow: var(--card-shadow);
  position: relative;
  overflow: hidden;
}

.contact-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary), var(--primary-light));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition);
}

.contact-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--primary-glow);
}

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

.contact-item h4 {
  margin: 0 0 8px;
  color: var(--primary);
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.contact-item p {
  margin-bottom: 0;
  font-size: 15px;
  color: var(--text-light);
  word-break: break-all;
}

/* ===== Team ===== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 18px;
}

.team-member {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 18px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  box-shadow: var(--card-shadow);
  position: relative;
  overflow: hidden;
}

.team-member::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: conic-gradient(from 0deg, transparent, var(--primary-glow), transparent 30%);
  opacity: 0;
  transition: opacity var(--transition);
  animation: rotateGlow 4s linear infinite;
}

@keyframes rotateGlow {
  to { transform: rotate(360deg); }
}

.team-member:hover::before {
  opacity: 1;
}

.team-member:hover {
  transform: translateY(-6px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--primary-glow);
}

.team-member svg {
  width: 76px;
  height: 76px;
  margin: 0 auto 12px;
  position: relative;
  z-index: 1;
  transition: transform var(--transition);
  border-radius: 50%;
}

.team-member:hover svg {
  transform: scale(1.08) rotate(4deg);
}

.team-member .name {
  font-weight: 700;
  position: relative;
  z-index: 1;
  color: var(--text);
  font-size: 16px;
}

.team-member .role {
  font-size: 13px;
  color: var(--text-muted);
  position: relative;
  z-index: 1;
  margin-top: 4px;
}

/* ===== TOC ===== */
.toc {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  box-shadow: var(--card-shadow);
  transition: box-shadow var(--transition);
}

.toc:hover {
  box-shadow: var(--card-shadow-hover);
}

.toc ul {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 10px;
}

.toc li {
  position: relative;
  padding-left: 18px;
}

.toc li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-size: 12px;
  transition: transform var(--transition-fast);
}

.toc li:hover::before {
  transform: translateX(3px);
}

.toc a {
  font-size: 14px;
  color: var(--text-light);
  transition: color var(--transition-fast);
}

.toc a:hover {
  color: var(--primary);
  text-decoration: none;
}

/* ===== Notice ===== */
.notice {
  background: linear-gradient(135deg, #fff8e1, #fffdf5);
  border: 1px solid #ffe08a;
  border-radius: var(--radius);
  padding: 18px 20px;
  font-size: 15px;
  color: #7a5c00;
  position: relative;
  padding-left: 48px;
  box-shadow: 0 2px 10px rgba(255, 224, 138, 0.2);
}

.notice::before {
  content: "⚠";
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
}

body.dark .notice {
  background: linear-gradient(135deg, #2a2410, #1f1c0e);
  border-color: #5a4a10;
  color: #e0c880;
  box-shadow: 0 2px 10px rgba(90, 74, 16, 0.3);
}

/* ===== Footer ===== */
footer.site-footer {
  background: linear-gradient(180deg, #1a1a1a, #111);
  color: #bbb;
  padding: 48px 0 24px;
  margin-top: 50px;
  position: relative;
  overflow: hidden;
}

footer.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light), var(--primary));
  background-size: 200% 100%;
  animation: gradientShift 4s linear infinite;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

footer.site-footer a {
  color: #ddd;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
  position: relative;
}

footer.site-footer a:hover {
  color: var(--primary-light);
  text-decoration: none;
  padding-left: 4px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 28px;
  margin-bottom: 30px;
}

.footer-grid h4 {
  color: #fff;
  margin-bottom: 14px;
  font-size: 16px;
  position: relative;
  padding-bottom: 8px;
}

.footer-grid h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

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

.footer-grid li {
  margin-bottom: 10px;
  font-size: 14px;
  color: #999;
}

.footer-grid p {
  font-size: 14px;
  color: #999;
  line-height: 1.8;
}

.footer-bottom {
  border-top: 1px solid #2a2a2a;
  padding-top: 20px;
  font-size: 13px;
  color: #777;
  text-align: center;
  line-height: 2;
}

/* ===== Back to Top ===== */
.back-to-top {
  position: fixed;
  right: 22px;
  bottom: 28px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border: 0;
  cursor: pointer;
  font-size: 20px;
  display: none;
  z-index: 200;
  box-shadow: 0 6px 20px var(--primary-glow);
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
  opacity: 0;
  align-items: center;
  justify-content: center;
}

.back-to-top.show {
  display: flex;
  opacity: 1;
  animation: popIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes popIn {
  from {
    transform: scale(0.5);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.back-to-top:hover {
  transform: translateY(-4px) scale(1.08);
  box-shadow: 0 12px 32px var(--primary-glow);
}

.back-to-top:active {
  transform: translateY(-2px) scale(0.98);
}

/* ===== Reveal Animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--primary), var(--primary-dark));
  border-radius: 6px;
  border: 2px solid var(--bg);
}

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

/* ===== Focus Visible ===== */
:focus-visible {
  outline: 3px solid var(--primary-glow);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .slide h2 {
    font-size: 26px;
  }
  nav.main-nav ul {
    gap: 14px;
  }
  nav.main-nav a {
    font-size: 14px;
  }
  .search-box input {
    width: 120px;
  }
}

@media (max-width: 860px) {
  nav.main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid var(--border);
    padding: 12px 20px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
    animation: slideDown 0.3s ease;
  }

  @keyframes slideDown {
    from {
      opacity: 0;
      transform: translateY(-10px);
    }
    to {
      opacity: 1;
      transform: none;
    }
  }

  nav.main-nav.open {
    display: block;
  }

  nav.main-nav ul {
    flex-direction: column;
    gap: 0;
  }

  nav.main-nav li {
    border-bottom: 1px solid var(--border-light);
  }

  nav.main-nav li:last-child {
    border-bottom: none;
  }

  nav.main-nav a {
    display: block;
    padding: 14px 0;
    font-size: 15px;
  }

  nav.main-nav a::after {
    display: none;
  }

  body.dark nav.main-nav {
    background: var(--glass-bg);
    border-color: var(--border);
  }

  body.dark nav.main-nav li {
    border-color: var(--border);
  }

  .menu-toggle {
    display: block;
  }

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

  .slide {
    padding: 36px 24px;
  }

  .slide h2 {
    font-size: 22px;
  }

  .slide p {
    font-size: 15px;
  }

  h1 {
    font-size: 24px;
  }

  h2 {
    font-size: 20px;
  }

  h3 {
    font-size: 17px;
  }

  .banner {
    min-height: 240px;
    border-radius: var(--radius);
  }

  .container {
    padding: 0 14px;
  }

  section {
    margin-bottom: 40px;
  }
}

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

  .nav-wrap {
    height: 58px;
    padding: 0 12px;
  }

  .logo {
    font-size: 17px;
    gap: 8px;
  }

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

  .search-box {
    display: none;
  }

  .slide {
    padding: 28px 18px;
  }

  .slide h2 {
    font-size: 19px;
  }

  .slide p {
    font-size: 14px;
  }

  .slide .cta {
    padding: 9px 22px;
    font-size: 14px;
  }

  .banner {
    min-height: 220px;
    border-radius: var(--radius-sm);
  }

  h1 {
    font-size: 21px;
  }

  h2 {
    font-size: 18px;
    padding-left: 10px;
    border-left-width: 4px;
  }

  h3 {
    font-size: 16px;
  }

  .card-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .stat {
    padding: 18px 8px;
  }

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

  .stat .label {
    font-size: 12px;
  }

  .team-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .team-member {
    padding: 16px 10px;
  }

  .team-member svg {
    width: 56px;
    height: 56px;
  }

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

  .toc ul {
    grid-template-columns: 1fr;
  }

  .howto-step {
    padding: 12px;
    gap: 12px;
  }

  .howto-step .idx {
    flex: 0 0 34px;
    width: 34px;
    height: 34px;
    font-size: 14px;
  }

  article {
    padding: 18px;
  }

  table {
    font-size: 13px;
  }

  th,
  td {
    padding: 9px 10px;
  }

  .faq-q {
    padding: 14px 16px;
    font-size: 15px;
  }

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

  .back-to-top {
    right: 14px;
    bottom: 18px;
    width: 40px;
    height: 40px;
    font-size: 17px;
  }

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

  .banner-dots {
    bottom: 12px;
  }

  .banner-dots span {
    width: 8px;
    height: 8px;
  }

  .banner-dots span.active {
    width: 22px;
  }
}

@media (max-width: 380px) {
  .stats {
    grid-template-columns: 1fr;
  }

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

/* ===== 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;
  }
}

/* ===== Print ===== */
@media print {
  header.site-header,
  .back-to-top,
  .banner,
  .theme-toggle,
  .menu-toggle,
  .search-box {
    display: none !important;
  }

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

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