:root {
  --primary: #7c3aed;
  --primary-dark: #6d28d9;
  --primary-light: #a78bfa;
  --accent: #fbbf24;
  --accent-soft: #fde68a;
  --bg: #f8f7fc;
  --bg-alt: #ffffff;
  --surface: #ffffff;
  --surface-glass: rgba(255, 255, 255, 0.65);
  --surface-glass-strong: rgba(255, 255, 255, 0.85);
  --border: #e9e5f5;
  --border-strong: #d8d0ec;
  --text: #1f1a2e;
  --text-soft: #4b4460;
  --text-muted: #6f6a80;
  --shadow-sm: 0 2px 8px rgba(38, 24, 74, 0.06);
  --shadow-md: 0 8px 28px rgba(38, 24, 74, 0.1);
  --shadow-lg: 0 18px 48px rgba(38, 24, 74, 0.16);
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --gradient-hero: linear-gradient(135deg, #7c3aed 0%, #9333ea 45%, #f59e0b 100%);
  --gradient-soft: linear-gradient(135deg, rgba(124, 58, 237, 0.1), rgba(251, 191, 36, 0.12));
  --gradient-btn: linear-gradient(135deg, #7c3aed, #a855f7);
  --header-h: 68px;
  --transition: 0.3s cubic-bezier(0.22, 0.61, 0.36, 1);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", system-ui, -apple-system, sans-serif;
}

[data-theme="dark"] {
  --primary: #a78bfa;
  --primary-dark: #8b5cf6;
  --primary-light: #c4b5fd;
  --accent: #fbbf24;
  --accent-soft: #78350f;
  --bg: #0f0b1a;
  --bg-alt: #16112a;
  --surface: #1a1430;
  --surface-glass: rgba(30, 23, 54, 0.6);
  --surface-glass-strong: rgba(30, 23, 54, 0.85);
  --border: #2a2145;
  --border-strong: #3b2f5e;
  --text: #f1edfb;
  --text-soft: #c9c1e0;
  --text-muted: #9a92b3;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.6);
  --gradient-hero: linear-gradient(135deg, #4c1d95 0%, #6d28d9 45%, #b45309 100%);
  --gradient-soft: linear-gradient(135deg, rgba(124, 58, 237, 0.18), rgba(251, 191, 36, 0.1));
  --gradient-btn: linear-gradient(135deg, #7c3aed, #a855f7);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --primary: #a78bfa;
    --primary-dark: #8b5cf6;
    --primary-light: #c4b5fd;
    --bg: #0f0b1a;
    --bg-alt: #16112a;
    --surface: #1a1430;
    --surface-glass: rgba(30, 23, 54, 0.6);
    --surface-glass-strong: rgba(30, 23, 54, 0.85);
    --border: #2a2145;
    --border-strong: #3b2f5e;
    --text: #f1edfb;
    --text-soft: #c9c1e0;
    --text-muted: #9a92b3;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.6);
    --gradient-hero: linear-gradient(135deg, #4c1d95 0%, #6d28d9 45%, #b45309 100%);
    --gradient-soft: linear-gradient(135deg, rgba(124, 58, 237, 0.18), rgba(251, 191, 36, 0.1));
  }
}

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

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

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background-image:
    radial-gradient(ellipse 60% 40% at 10% 0%, rgba(124, 58, 237, 0.08), transparent 70%),
    radial-gradient(ellipse 50% 35% at 95% 8%, rgba(251, 191, 36, 0.07), transparent 70%);
  background-attachment: fixed;
}

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

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

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

h1, h2, h3, h4 {
  line-height: 1.35;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(1.75rem, 3.4vw, 2.75rem); }
h2 { font-size: clamp(1.4rem, 2.4vw, 2rem); }
h3 { font-size: clamp(1.15rem, 1.8vw, 1.4rem); }
h4 { font-size: 1.05rem; }

p {
  color: var(--text-soft);
  margin-bottom: 0.9em;
}

ul, ol {
  list-style: none;
}

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

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

:focus-visible {
  outline: 3px solid var(--primary-light);
  outline-offset: 3px;
  border-radius: 4px;
}

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

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-alt);
}
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 999px;
  border: 2px solid var(--bg-alt);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary-light);
}

/* ============ HEADER ============ */
#site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--surface-glass-strong);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), box-shadow var(--transition);
}

#site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--text);
}

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

.brand-logo {
  border-radius: 10px;
  box-shadow: 0 4px 14px rgba(124, 58, 237, 0.35);
  transition: transform var(--transition);
}

.brand:hover .brand-logo {
  transform: rotate(-8deg) scale(1.06);
}

.brand-name {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}

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

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

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

.main-nav a {
  display: inline-block;
  padding: 8px 12px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-soft);
  border-radius: var(--radius-pill);
  white-space: nowrap;
  position: relative;
  transition: color var(--transition), background var(--transition);
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 4px;
  width: 0;
  height: 2px;
  background: var(--gradient-btn);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: width var(--transition);
}

.main-nav a:hover {
  color: var(--primary);
  background: var(--gradient-soft);
}

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

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

.site-search {
  display: flex;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 4px 4px 4px 16px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.site-search:focus-within {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.12);
}

.site-search input {
  border: none;
  background: transparent;
  color: var(--text);
  font-size: 0.9rem;
  font-family: inherit;
  width: 150px;
  padding: 6px 0;
  outline: none;
}

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

.site-search button {
  border: none;
  cursor: pointer;
  background: var(--gradient-btn);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: inherit;
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  transition: transform var(--transition), box-shadow var(--transition);
}

.site-search button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(124, 58, 237, 0.4);
}

.site-search button:active {
  transform: translateY(0);
}

#theme-toggle,
#menu-toggle {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 1.1rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition), background var(--transition), border-color var(--transition);
  flex-shrink: 0;
}

#theme-toggle:hover,
#menu-toggle:hover {
  background: var(--gradient-soft);
  border-color: var(--primary-light);
  transform: translateY(-2px) rotate(8deg);
}

#menu-toggle {
  display: none;
}

/* ============ HERO ============ */
.hero {
  max-width: 1240px;
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 40px;
  align-items: start;
}

.hero-slider {
  position: relative;
  border-radius: var(--radius-lg);
  padding: 36px 30px 56px;
  background: var(--gradient-hero);
  color: #fff;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  min-height: 320px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-slider::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 85% 15%, rgba(255, 255, 255, 0.25), transparent 45%),
    radial-gradient(circle at 10% 90%, rgba(251, 191, 36, 0.35), transparent 50%);
  pointer-events: none;
}

.hero-slider::after {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 0 0 30px rgba(255, 255, 255, 0.06);
  pointer-events: none;
}

.slide {
  display: none;
  position: relative;
  z-index: 1;
  animation: slideFade 0.6s ease both;
}

.slide.active {
  display: block;
}

.slide h2 {
  color: #fff;
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  margin-bottom: 12px;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.18);
}

.slide p {
  color: rgba(255, 255, 255, 0.92);
  font-size: 1rem;
  margin: 0;
  max-width: 90%;
}

@keyframes slideFade {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

.slider-dots {
  position: absolute;
  left: 30px;
  bottom: 24px;
  display: flex;
  gap: 8px;
  z-index: 2;
}

.slider-dots .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.45);
  transition: width var(--transition), background var(--transition);
}

.slider-dots .dot.active {
  width: 26px;
  border-radius: var(--radius-pill);
  background: #fff;
}

.hero-text h1 {
  margin-bottom: 18px;
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  font-size: 1rem;
  color: var(--text-soft);
  margin-bottom: 24px;
  text-align: justify;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  border-radius: var(--radius-pill);
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  position: relative;
  overflow: hidden;
}

.btn.primary {
  background: var(--gradient-btn);
  color: #fff;
  box-shadow: 0 8px 22px rgba(124, 58, 237, 0.35);
}

.btn.primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.35) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform 0.6s ease;
}

.btn.primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(124, 58, 237, 0.45);
  color: #fff;
}

.btn.primary:hover::before {
  transform: translateX(120%);
}

.btn.ghost {
  background: var(--surface-glass);
  color: var(--primary);
  border-color: var(--border-strong);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.btn.ghost:hover {
  transform: translateY(-3px);
  border-color: var(--primary-light);
  background: var(--surface);
  box-shadow: var(--shadow-md);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.hero-stats li {
  background: var(--surface-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 10px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.hero-stats li:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}

.hero-stats strong {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

.hero-stats span {
  font-size: 0.78rem;
  color: var(--text-muted);
  display: block;
  margin-top: 4px;
}

/* ============ BREADCRUMB ============ */
.breadcrumb {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px 8px;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumb li:not(:last-child)::after {
  content: "/";
  margin-left: 6px;
  color: var(--border-strong);
}

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

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

.breadcrumb [aria-current="page"] {
  color: var(--text-soft);
  font-weight: 500;
}

/* ============ SECTIONS ============ */
.section {
  max-width: 1240px;
  margin: 0 auto;
  padding: 40px 24px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.section > h2 {
  position: relative;
  padding-left: 18px;
  margin-bottom: 20px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.section > h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.15em;
  bottom: 0.15em;
  width: 6px;
  border-radius: 6px;
  background: var(--gradient-btn);
}

.section > h2::after {
  content: "";
  display: block;
  width: 64px;
  height: 3px;
  margin-top: 10px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.section h3 {
  margin: 28px 0 12px;
  color: var(--text);
}

.section h4 {
  margin: 20px 0 8px;
  color: var(--primary);
  font-weight: 700;
}

.section p {
  text-align: justify;
}

/* ============ CARDS (generic for blocks) ============ */
#about,
#products,
#solutions,
#scenes,
#cases,
#news,
#articles,
#howto,
#faq,
#knowledge,
#contact,
#legal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-top: 24px;
  margin-bottom: 24px;
  padding: 40px 36px;
  transition: box-shadow var(--transition), border-color var(--transition);
}

#about:hover,
#products:hover,
#solutions:hover,
#scenes:hover,
#cases:hover,
#news:hover,
#articles:hover,
#howto:hover,
#faq:hover,
#knowledge:hover,
#contact:hover,
#legal:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

/* ============ NEWS LIST ============ */
.news-list {
  display: grid;
  gap: 16px;
  margin-top: 8px;
}

.news-list li {
  position: relative;
  padding: 20px 22px 20px 24px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.news-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 4px;
  border-radius: 4px;
  background: var(--gradient-btn);
  opacity: 0.7;
  transition: opacity var(--transition);
}

.news-list li:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}

.news-list li:hover::before {
  opacity: 1;
}

.news-list time {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary);
  background: var(--gradient-soft);
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 8px;
}

.news-list h3 {
  margin: 0 0 6px;
  font-size: 1.08rem;
}

.news-list p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-muted);
}

/* ============ POSTS ============ */
.post {
  position: relative;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 26px;
  margin-bottom: 18px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  overflow: hidden;
}

.post::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-btn);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.post:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}

.post:hover::after {
  transform: scaleX(1);
}

.post h3 {
  margin: 0 0 8px;
  font-size: 1.15rem;
}

.post h3 a {
  color: var(--text);
  transition: color var(--transition);
}

.post h3 a:hover {
  color: var(--primary);
}

.post .meta {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.post p {
  font-size: 0.94rem;
  color: var(--text-soft);
  margin-bottom: 14px;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  background: var(--gradient-soft);
  transition: gap var(--transition), background var(--transition), color var(--transition);
}

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

.read-more:hover {
  gap: 10px;
  color: var(--primary-dark);
}

.read-more:hover::after {
  transform: translateX(3px);
}

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

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

#faq summary {
  cursor: pointer;
  padding: 16px 50px 16px 20px;
  font-weight: 600;
  color: var(--text);
  position: relative;
  list-style: none;
  transition: background var(--transition), color var(--transition);
  font-size: 0.98rem;
}

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

#faq summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--primary);
  transition: transform var(--transition);
  line-height: 1;
}

#faq details[open] summary::after {
  content: "−";
  transform: translateY(-50%) rotate(180deg);
}

#faq summary:hover {
  background: var(--gradient-soft);
  color: var(--primary);
}

#faq details p {
  padding: 0 20px 18px;
  margin: 0;
  font-size: 0.93rem;
  color: var(--text-soft);
  animation: fadeIn 0.35s ease both;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============ CONTACT ============ */
.contact-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin: 8px 0 20px;
}

.contact-list li {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  font-size: 0.93rem;
  color: var(--text-soft);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.contact-list li:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
  border-color: var(--primary-light);
}

.contact-list strong {
  color: var(--primary);
  display: block;
  margin-bottom: 2px;
  font-size: 0.85rem;
}

/* ============ SITEMAP & LINKS ============ */
.sitemap,
.friend-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 8px 0 20px;
}

.sitemap li a,
.friend-links li a {
  display: inline-block;
  padding: 7px 16px;
  font-size: 0.88rem;
  color: var(--text-soft);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  transition: all var(--transition);
}

.sitemap li a:hover,
.friend-links li a:hover {
  color: #fff;
  background: var(--gradient-btn);
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(124, 58, 237, 0.3);
}

/* ============ BLOCKQUOTE ============ */
blockquote {
  position: relative;
  background: var(--gradient-soft);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 18px 22px;
  margin: 16px 0;
  transition: transform var(--transition), box-shadow var(--transition);
}

blockquote:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

blockquote p {
  margin: 0 0 8px;
  font-style: italic;
  color: var(--text-soft);
}

blockquote footer {
  font-size: 0.85rem;
  color: var(--primary);
  font-weight: 600;
}

/* ============ FOOTER ============ */
#site-footer {
  margin-top: 48px;
  background: linear-gradient(180deg, var(--bg-alt), var(--surface));
  border-top: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

#site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-hero);
}

.footer-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 40px 24px 28px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 28px;
}

.footer-brand p {
  margin-bottom: 8px;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.footer-brand strong {
  font-size: 1.05rem;
  color: var(--text);
}

.footer-brand a {
  color: var(--primary);
  font-weight: 600;
}

.footer-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

.footer-nav a {
  font-size: 0.9rem;
  color: var(--text-soft);
  transition: color var(--transition);
}

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

.copyright {
  grid-column: 1 / -1;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
  color: var(--text-muted);
  text-align: center;
  margin: 0;
}

/* ============ BACK TO TOP ============ */
#back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: var(--gradient-btn);
  color: #fff;
  font-size: 1.3rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(124, 58, 237, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.85);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition), box-shadow var(--transition);
  z-index: 900;
}

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

#back-to-top:hover {
  transform: translateY(-4px) scale(1.06);
  box-shadow: 0 14px 32px rgba(124, 58, 237, 0.55);
}

#back-to-top:active {
  transform: translateY(-1px) scale(0.98);
}

/* ============ SCROLL ANIMATION ============ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.22, 0.61, 0.36, 1), transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
  will-change: opacity, transform;
}

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

.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1080px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .hero-slider {
    min-height: 240px;
  }
  .hero-stats {
    grid-template-columns: repeat(4, 1fr);
  }
  .site-search input {
    width: 110px;
  }
}

@media (max-width: 900px) {
  .main-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--surface-glass-strong);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
    padding: 12px 20px 20px;
    box-shadow: var(--shadow-md);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }
  .main-nav.open {
    display: block;
    animation: navSlide 0.3s ease both;
  }
  @keyframes navSlide {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }
  .main-nav a {
    display: block;
    padding: 12px 16px;
    font-size: 1rem;
    border-radius: var(--radius-sm);
  }
  .main-nav a::after {
    display: none;
  }
  #menu-toggle {
    display: inline-flex;
  }
  .site-search {
    display: none;
  }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .footer-nav ul {
    gap: 10px 20px;
  }
}

@media (max-width: 640px) {
  :root {
    --header-h: 60px;
  }
  body {
    font-size: 15px;
  }
  .header-inner {
    padding: 0 16px;
    gap: 12px;
  }
  .brand-name {
    font-size: 1.05rem;
  }
  .brand-logo {
    width: 34px;
    height: 34px;
  }
  .hero {
    padding: 28px 16px 20px;
  }
  .hero-slider {
    padding: 28px 22px 48px;
    min-height: 200px;
  }
  .slide p {
    max-width: 100%;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-stats strong {
    font-size: 1.3rem;
  }
  .hero-actions {
    gap: 10px;
  }
  .btn {
    flex: 1;
    padding: 12px 18px;
    font-size: 0.9rem;
  }
  .breadcrumb {
    padding: 0 16px 8px;
  }
  .section {
    padding: 28px 16px;
  }
  #about,
  #products,
  #solutions,
  #scenes,
  #cases,
  #news,
  #articles,
  #howto,
  #faq,
  #knowledge,
  #contact,
  #legal {
    padding: 26px 18px;
    border-radius: var(--radius);
    margin-top: 16px;
    margin-bottom: 16px;
  }
  .section > h2 {
    padding-left: 14px;
  }
  .post {
    padding: 18px 18px;
  }
  .news-list li {
    padding: 16px 16px 16px 20px;
  }
  #faq summary {
    padding: 14px 44px 14px 16px;
    font-size: 0.94rem;
  }
  #faq details p {
    padding: 0 16px 16px;
  }
  .contact-list {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    padding: 28px 16px 22px;
  }
  #back-to-top {
    right: 16px;
    bottom: 16px;
    width: 44px;
    height: 44px;
  }
  blockquote {
    padding: 14px 16px;
  }
}

@media (max-width: 380px) {
  .hero-stats {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
  .hero-stats li {
    padding: 10px 6px;
  }
  .hero-stats span {
    font-size: 0.72rem;
  }
}

/* ============ PRINT ============ */
@media print {
  #site-header,
  #back-to-top,
  .hero-slider,
  .hero-actions,
  .slider-dots,
  .site-search,
  #theme-toggle,
  #menu-toggle {
    display: none !important;
  }
  body {
    background: #fff;
    color: #000;
  }
  .section {
    box-shadow: none;
    border: none;
  }
  a {
    color: #000;
    text-decoration: underline;
  }
}