:root {
  --primary: #f7a8b8;
  --primary-dark: #e88a9e;
  --primary-light: #fdd5dd;
  --secondary: #a8c8f7;
  --accent: #c8a8f7;
  --bg: #fef8f9;
  --bg-alt: #fdf0f3;
  --card-bg: rgba(255, 255, 255, 0.72);
  --card-border: rgba(247, 168, 184, 0.25);
  --text: #3a2e33;
  --text-secondary: #7a6b72;
  --text-light: #a89aa0;
  --shadow: 0 8px 32px rgba(247, 168, 184, 0.15);
  --shadow-hover: 0 16px 48px rgba(247, 168, 184, 0.28);
  --radius: 20px;
  --radius-sm: 12px;
  --radius-lg: 28px;
  --glass-bg: rgba(255, 255, 255, 0.55);
  --glass-border: rgba(255, 255, 255, 0.65);
  --glass-blur: 16px;
  --transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --header-height: 72px;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
}

[data-theme="dark"] {
  --primary: #f7a8b8;
  --primary-dark: #d4728a;
  --primary-light: #5a3a45;
  --secondary: #7a9ad4;
  --accent: #a88ad4;
  --bg: #1a1215;
  --bg-alt: #221a1e;
  --card-bg: rgba(42, 32, 38, 0.78);
  --card-border: rgba(247, 168, 184, 0.18);
  --text: #f0e6ea;
  --text-secondary: #c4b2ba;
  --text-light: #8a7a82;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.5);
  --glass-bg: rgba(42, 32, 38, 0.55);
  --glass-border: rgba(247, 168, 184, 0.15);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.85;
  font-size: 16px;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul,
ol {
  list-style: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ========== HEADER ========== */
#site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
  transition: background var(--transition), box-shadow var(--transition);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: var(--header-height);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  flex-shrink: 0;
}

.logo svg {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.logo:hover svg {
  transform: rotate(-10deg) scale(1.08);
}

.logo span {
  background: linear-gradient(135deg, var(--primary-dark), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

#main-nav {
  flex: 1;
  min-width: 0;
}

#main-nav ul {
  display: flex;
  gap: 4px;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
}

#main-nav ul::-webkit-scrollbar {
  display: none;
}

#main-nav a {
  display: block;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: all var(--transition);
  position: relative;
}

#main-nav a::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
  transition: all var(--transition);
  transform: translateX(-50%);
}

#main-nav a:hover {
  color: var(--primary-dark);
  background: var(--primary-light);
}

#main-nav a:hover::after {
  width: 60%;
}

/* ========== SEARCH ========== */
#site-search {
  display: flex;
  align-items: center;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 50px;
  overflow: hidden;
  transition: all var(--transition);
  flex-shrink: 0;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

#site-search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(247, 168, 184, 0.2);
}

#search-input {
  border: none;
  background: transparent;
  padding: 8px 16px;
  font-size: 14px;
  font-family: var(--font);
  color: var(--text);
  outline: none;
  width: 180px;
  transition: width var(--transition);
}

#search-input::placeholder {
  color: var(--text-light);
}

#search-input:focus {
  width: 220px;
}

#site-search button {
  border: none;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  padding: 8px 18px;
  font-size: 14px;
  font-family: var(--font);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

#site-search button:hover {
  opacity: 0.85;
  letter-spacing: 1px;
}

/* ========== TOGGLE BUTTONS ========== */
#mobile-menu-toggle,
#theme-toggle {
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  color: var(--text);
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 13px;
  font-family: var(--font);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

#mobile-menu-toggle:hover,
#theme-toggle:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
  border-color: var(--primary);
  transform: translateY(-1px);
}

#mobile-menu-toggle {
  display: none;
}

/* ========== MAIN ========== */
main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px 60px;
}

/* ========== HERO ========== */
#hero {
  margin: 24px 0 32px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  background: linear-gradient(135deg, #fdd5dd 0%, #e8d5f7 30%, #d5e8f7 60%, #f7d5e8 100%);
  background-size: 300% 300%;
  animation: heroGradient 12s ease infinite;
  box-shadow: var(--shadow);
}

@keyframes heroGradient {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

[data-theme="dark"] #hero {
  background: linear-gradient(135deg, #3a2030 0%, #2a2040 30%, #203040 60%, #3a2035 100%);
  background-size: 300% 300%;
}

.hero-carousel {
  position: relative;
  min-height: 380px;
}

.slide {
  position: absolute;
  inset: 0;
  padding: 60px 56px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 20px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease, visibility 0.7s;
}

.slide.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  position: relative;
}

.slide h1,
.slide h2 {
  font-size: clamp(24px, 3.5vw, 40px);
  font-weight: 800;
  line-height: 1.35;
  color: #3a2e33;
  max-width: 720px;
}

[data-theme="dark"] .slide h1,
[data-theme="dark"] .slide h2 {
  color: #f0e6ea;
}

.slide p {
  font-size: clamp(14px, 1.6vw, 17px);
  line-height: 1.9;
  color: #5a4a52;
  max-width: 680px;
}

[data-theme="dark"] .slide p {
  color: #c4b2ba;
}

.cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: flex-start;
  padding: 14px 36px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff !important;
  border-radius: 50px;
  font-size: 16px;
  font-weight: 700;
  box-shadow: 0 8px 24px rgba(247, 168, 184, 0.4);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent), var(--secondary));
  opacity: 0;
  transition: opacity var(--transition);
}

.cta:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 14px 36px rgba(247, 168, 184, 0.55);
}

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

.cta span,
.cta {
  position: relative;
  z-index: 1;
}

/* ========== BREADCRUMB ========== */
#breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  margin-bottom: 32px;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  font-size: 13px;
  flex-wrap: wrap;
}

#breadcrumb li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
}

#breadcrumb li:not(:last-child)::after {
  content: "›";
  color: var(--text-light);
  font-size: 16px;
}

#breadcrumb a {
  color: var(--text-secondary);
  font-weight: 500;
}

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

#breadcrumb [aria-current="page"] {
  color: var(--primary-dark);
  font-weight: 600;
}

/* ========== SECTIONS ========== */
section {
  margin-bottom: 56px;
}

section > h2 {
  font-size: clamp(22px, 2.8vw, 32px);
  font-weight: 800;
  margin-bottom: 24px;
  position: relative;
  padding-left: 20px;
  line-height: 1.4;
}

section > h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.15em;
  bottom: 0.15em;
  width: 6px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
}

section h3 {
  font-size: clamp(17px, 2vw, 22px);
  font-weight: 700;
  margin: 32px 0 14px;
  color: var(--text);
  line-height: 1.5;
}

section h3:first-of-type {
  margin-top: 20px;
}

section p {
  margin-bottom: 16px;
  color: var(--text-secondary);
  line-height: 1.95;
  font-size: 15.5px;
}

section ul,
section ol {
  margin: 16px 0 24px;
  padding-left: 0;
}

section ul li,
section ol li {
  position: relative;
  padding: 10px 0 10px 32px;
  color: var(--text-secondary);
  line-height: 1.85;
  font-size: 15px;
  border-bottom: 1px solid var(--card-border);
  transition: all var(--transition);
}

section ul li:last-child,
section ol li:last-child {
  border-bottom: none;
}

section ul li::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 18px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  transition: transform var(--transition);
}

section ul li:hover::before {
  transform: scale(1.5);
}

section ol {
  counter-reset: ol-counter;
}

section ol li {
  counter-increment: ol-counter;
}

section ol li::before {
  content: counter(ol-counter);
  position: absolute;
  left: 0;
  top: 12px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

section ul li:hover,
section ol li:hover {
  color: var(--text);
  padding-left: 36px;
}

/* ========== BRAND SECTION ========== */
#brand {
  background: var(--card-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition);
}

#brand:hover {
  box-shadow: var(--shadow-hover);
}

#brand ul li strong {
  color: var(--primary-dark);
  font-weight: 700;
}

/* ========== PRODUCTS SECTION ========== */
#products {
  background: linear-gradient(135deg, var(--bg-alt), var(--bg));
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  border: 1px solid var(--card-border);
}

#products h3 {
  padding: 16px 20px;
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--radius-sm);
  border-left: 4px solid var(--primary);
  transition: all var(--transition);
  cursor: default;
}

#products h3:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow);
  border-left-color: var(--accent);
}

#products ul li strong {
  color: var(--primary-dark);
}

/* ========== SOLUTIONS SECTION ========== */
#solutions {
  padding: 0;
}

#solutions h3 {
  padding: 20px 24px;
  background: var(--card-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--card-border);
  border-radius: var(--radius) var(--radius) 0 0;
  margin-bottom: 0;
  transition: all var(--transition);
}

#solutions h3 + p {
  padding: 20px 24px;
  margin: 0 0 20px;
  background: var(--card-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--card-border);
  border-top: none;
  border-radius: 0 0 var(--radius) var(--radius);
  transition: all var(--transition);
}

#solutions h3:hover,
#solutions h3:hover + p {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}

/* ========== CASES SECTION ========== */
#cases {
  background: var(--card-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  box-shadow: var(--shadow);
}

#cases blockquote {
  margin: 16px 0;
  padding: 20px 24px 20px 28px;
  background: linear-gradient(135deg, var(--primary-light), var(--bg-alt));
  border-radius: var(--radius-sm);
  border-left: 4px solid var(--primary);
  position: relative;
  transition: all var(--transition);
}

[data-theme="dark"] #cases blockquote {
  background: linear-gradient(135deg, rgba(247, 168, 184, 0.08), rgba(168, 200, 247, 0.06));
}

#cases blockquote::before {
  content: "\201C";
  position: absolute;
  top: 8px;
  left: 12px;
  font-size: 40px;
  color: var(--primary);
  opacity: 0.3;
  line-height: 1;
  font-family: Georgia, serif;
}

#cases blockquote:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

#cases blockquote p {
  margin: 0;
  font-style: italic;
  color: var(--text-secondary);
  padding-left: 16px;
}

/* ========== ARTICLES SECTION ========== */
#articles {
  display: grid;
  gap: 20px;
}

#articles > h2,
#articles > p {
  grid-column: 1 / -1;
}

#articles article {
  background: var(--card-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px 28px 24px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

#articles article::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent), var(--secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

#articles article:hover::before {
  transform: scaleX(1);
}

#articles article:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}

#articles article h3 {
  font-size: 17px;
  margin: 0 0 8px;
  line-height: 1.5;
  color: var(--text);
  transition: color var(--transition);
}

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

#articles article time {
  display: inline-block;
  font-size: 12px;
  color: var(--text-light);
  margin-bottom: 12px;
  padding: 2px 10px;
  background: var(--primary-light);
  border-radius: 50px;
  font-weight: 500;
}

#articles article p {
  font-size: 14px;
  line-height: 1.8;
  flex: 1;
  margin-bottom: 16px;
}

#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-dark);
  transition: all var(--transition);
  align-self: flex-start;
}

#articles article a::after {
  content: "→";
  transition: transform var(--transition);
}

#articles article a:hover {
  color: var(--primary);
  gap: 10px;
}

#articles article a:hover::after {
  transform: translateX(4px);
}

/* ========== HOWTO SECTION ========== */
#howto {
  background: linear-gradient(160deg, var(--bg-alt), var(--bg));
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  border: 1px solid var(--card-border);
}

#howto ol li {
  padding: 14px 0 14px 44px;
}

#howto ol li::before {
  width: 28px;
  height: 28px;
  top: 14px;
  font-size: 13px;
}

/* ========== FAQ SECTION ========== */
#faq {
  display: grid;
  gap: 12px;
}

#faq > h2 {
  grid-column: 1 / -1;
}

#faq details {
  background: var(--card-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: all var(--transition);
}

#faq details:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}

#faq details[open] {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}

#faq summary {
  padding: 18px 24px;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: all var(--transition);
  position: relative;
}

#faq summary::-webkit-details-marker {
  display: none;
}

#faq summary::after {
  content: "+";
  font-size: 22px;
  font-weight: 300;
  color: var(--primary);
  flex-shrink: 0;
  transition: transform var(--transition), color var(--transition);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--primary-light);
}

#faq details[open] summary::after {
  content: "−";
  transform: rotate(180deg);
  background: var(--primary);
  color: #fff;
}

#faq summary:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
}

#faq details[open] summary {
  border-bottom: 1px solid var(--card-border);
  background: var(--primary-light);
  color: var(--primary-dark);
}

#faq details p {
  padding: 20px 24px;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.9;
  animation: faqFadeIn 0.35s ease;
}

@keyframes faqFadeIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========== NEWS SECTION ========== */
#news {
  background: var(--card-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  box-shadow: var(--shadow);
}

#news ul li {
  padding: 14px 0 14px 32px;
  font-size: 15px;
  line-height: 1.8;
  border-bottom: 1px solid var(--card-border);
  transition: all var(--transition);
}

#news ul li:last-child {
  border-bottom: none;
}

#news ul li::before {
  top: 22px;
}

#news ul li time {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary-dark);
  background: var(--primary-light);
  padding: 2px 10px;
  border-radius: 50px;
  margin-right: 8px;
}

#news ul li:hover {
  padding-left: 38px;
  color: var(--text);
}

/* ========== CONTACT SECTION ========== */
#contact {
  background: linear-gradient(135deg, var(--primary-light), var(--bg-alt));
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  border: 1px solid var(--card-border);
}

[data-theme="dark"] #contact {
  background: linear-gradient(135deg, rgba(247, 168, 184, 0.06), rgba(168, 200, 247, 0.04));
}

#contact address {
  font-style: normal;
  margin: 20px 0;
}

#contact address ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
}

#contact address ul li {
  padding: 14px 20px;
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  font-size: 14.5px;
  border-bottom: 1px solid var(--card-border);
  transition: all var(--transition);
}

#contact address ul li::before {
  display: none;
}

#contact address ul li:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--primary);
  padding-left: 20px;
}

/* ========== SITEMAP & LINKS ========== */
#sitemap ul,
#links ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}

#sitemap ul li,
#links ul li {
  padding: 0;
  border-bottom: none;
}

#sitemap ul li::before,
#links ul li::before {
  display: none;
}

#sitemap ul li a,
#links ul li a {
  display: block;
  padding: 14px 20px;
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
}

#sitemap ul li a:hover,
#links ul li a:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

/* ========== LEGAL SECTION ========== */
#legal {
  background: var(--card-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  box-shadow: var(--shadow);
}

#legal h3 {
  padding: 14px 20px;
  background: var(--primary-light);
  border-radius: var(--radius-sm);
  font-size: 17px;
  transition: all var(--transition);
}

#legal h3:hover {
  transform: translateX(6px);
}

#legal h3 + p {
  padding: 16px 4px;
}

/* ========== AUTHOR INFO ========== */
#author-info {
  background: linear-gradient(135deg, var(--bg-alt), var(--bg));
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  border: 1px solid var(--card-border);
}

#author-info ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-top: 20px;
}

#author-info ul li {
  padding: 14px 20px;
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  text-align: center;
  border-bottom: 1px solid var(--card-border);
  transition: all var(--transition);
}

#author-info ul li::before {
  display: none;
}

#author-info ul li:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--primary);
  padding-left: 20px;
}

/* ========== FOOTER ========== */
#site-footer {
  background: linear-gradient(160deg, #3a2e33, #2a1e24);
  color: #c4b2ba;
  padding: 48px 24px 32px;
  margin-top: 40px;
  position: relative;
}

[data-theme="dark"] #site-footer {
  background: linear-gradient(160deg, #120a0e, #0a0508);
}

#site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent), var(--secondary));
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  text-align: center;
}

.footer-inner p {
  margin-bottom: 12px;
  font-size: 13.5px;
  line-height: 1.9;
  color: #a89aa0;
}

.footer-inner a {
  color: var(--primary);
  font-weight: 500;
  transition: all var(--transition);
}

.footer-inner a:hover {
  color: #fff;
  text-decoration: underline;
}

/* ========== BACK TO TOP ========== */
#back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 999;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  font-family: var(--font);
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(247, 168, 184, 0.45);
  transition: all var(--transition);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  display: flex;
  align-items: center;
  justify-content: center;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: 2px;
  padding: 0;
}

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

#back-to-top:hover {
  transform: translateY(-5px) scale(1.08);
  box-shadow: 0 14px 36px rgba(247, 168, 184, 0.6);
}

/* ========== SCROLL ANIMATIONS ========== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

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

section {
  animation: fadeInUp 0.7s ease both;
}

section:nth-child(2) { animation-delay: 0.05s; }
section:nth-child(3) { animation-delay: 0.1s; }
section:nth-child(4) { animation-delay: 0.15s; }
section:nth-child(5) { animation-delay: 0.2s; }
section:nth-child(6) { animation-delay: 0.25s; }
section:nth-child(7) { animation-delay: 0.3s; }
section:nth-child(8) { animation-delay: 0.35s; }
section:nth-child(9) { animation-delay: 0.4s; }
section:nth-child(10) { animation-delay: 0.45s; }
section:nth-child(11) { animation-delay: 0.5s; }
section:nth-child(12) { animation-delay: 0.55s; }
section:nth-child(13) { animation-delay: 0.6s; }
section:nth-child(14) { animation-delay: 0.65s; }
section:nth-child(15) { animation-delay: 0.7s; }

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

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

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--primary), var(--accent));
  border-radius: 10px;
  border: 2px solid var(--bg-alt);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--primary-dark), var(--primary));
}

/* ========== SELECTION ========== */
::selection {
  background: var(--primary);
  color: #fff;
}

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

/* ========== RESPONSIVE ========== */
@media (min-width: 768px) {
  #articles {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  #articles {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 1024px) {
  #main-nav ul {
    gap: 2px;
  }

  #main-nav a {
    padding: 8px 10px;
    font-size: 13px;
  }

  #search-input {
    width: 140px;
  }

  #search-input:focus {
    width: 170px;
  }
}

@media (max-width: 860px) {
  :root {
    --header-height: 64px;
  }

  .header-inner {
    flex-wrap: wrap;
    gap: 12px;
    padding: 10px 16px;
  }

  #main-nav {
    order: 10;
    width: 100%;
    display: none;
  }

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

  #main-nav ul {
    flex-direction: column;
    gap: 4px;
    padding: 8px 0;
  }

  #main-nav a {
    padding: 12px 16px;
    font-size: 15px;
    border-radius: var(--radius-sm);
  }

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

  #mobile-menu-toggle {
    display: block;
  }

  #site-search {
    order: 11;
    width: 100%;
    display: none;
  }

  #site-search.open {
    display: flex;
  }

  #search-input {
    width: 100%;
    flex: 1;
  }

  #search-input:focus {
    width: 100%;
  }

  main {
    padding: 0 16px 40px;
  }

  #hero {
    margin: 16px 0 24px;
    border-radius: var(--radius);
  }

  .hero-carousel {
    min-height: 340px;
  }

  .slide {
    padding: 40px 28px;
  }

  .slide h1,
  .slide h2 {
    font-size: clamp(20px, 5vw, 28px);
  }

  .slide p {
    font-size: 14.5px;
  }

  .cta {
    padding: 12px 28px;
    font-size: 15px;
  }

  section {
    margin-bottom: 40px;
  }

  section > h2 {
    font-size: clamp(20px, 4.5vw, 26px);
    margin-bottom: 20px;
  }

  #brand,
  #cases,
  #news,
  #legal,
  #author-info {
    padding: 28px 20px;
    border-radius: var(--radius);
  }

  #products,
  #howto,
  #contact {
    padding: 28px 20px;
    border-radius: var(--radius);
  }

  #contact address ul {
    grid-template-columns: 1fr;
  }

  #sitemap ul,
  #links ul {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }

  #author-info ul {
    grid-template-columns: repeat(2, 1fr);
  }

  #back-to-top {
    bottom: 20px;
    right: 20px;
    width: 46px;
    height: 46px;
    font-size: 11px;
  }

  #breadcrumb {
    padding: 10px 16px;
    font-size: 12px;
    gap: 6px;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 15px;
  }

  .header-inner {
    padding: 8px 12px;
    gap: 8px;
  }

  .logo {
    font-size: 17px;
  }

  .logo svg {
    width: 34px;
    height: 34px;
  }

  #theme-toggle,
  #mobile-menu-toggle {
    padding: 7px 12px;
    font-size: 12px;
  }

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

  .slide {
    padding: 32px 20px;
    gap: 14px;
  }

  .slide h1,
  .slide h2 {
    font-size: clamp(18px, 5.5vw, 24px);
  }

  .slide p {
    font-size: 13.5px;
    line-height: 1.8;
  }

  .cta {
    padding: 11px 24px;
    font-size: 14px;
  }

  section > h2 {
    font-size: 20px;
    padding-left: 16px;
  }

  section > h2::before {
    width: 5px;
  }

  section h3 {
    font-size: 16px;
    margin: 24px 0 10px;
  }

  section p {
    font-size: 14.5px;
  }

  #brand,
  #cases,
  #news,
  #legal,
  #author-info,
  #products,
  #howto,
  #contact {
    padding: 24px 16px;
  }

  #articles article {
    padding: 22px 20px 18px;
  }

  #faq summary {
    padding: 14px 18px;
    font-size: 14.5px;
  }

  #faq details p {
    padding: 16px 18px;
    font-size: 13.5px;
  }

  #author-info ul {
    grid-template-columns: 1fr;
  }

  #sitemap ul,
  #links ul {
    grid-template-columns: 1fr 1fr;
  }

  #sitemap ul li a,
  #links ul li a {
    padding: 12px 14px;
    font-size: 13px;
  }

  #news ul li {
    font-size: 14px;
    padding: 12px 0 12px 28px;
  }

  #news ul li::before {
    top: 20px;
  }

  .footer-inner p {
    font-size: 12.5px;
  }
}

/* ========== 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;
  }

  #hero {
    animation: none;
  }

  section {
    animation: none;
  }
}

/* ========== PRINT ========== */
@media print {
  #site-header,
  #back-to-top,
  #site-search,
  #mobile-menu-toggle,
  #theme-toggle {
    display: none !important;
  }

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

  #hero {
    background: #f5f5f5;
    animation: none;
  }

  section {
    page-break-inside: avoid;
  }
}