:root {
  --color-bg: #f4f6fb;
  --color-bg-alt: #ffffff;
  --color-surface: rgba(255, 255, 255, 0.72);
  --color-surface-solid: #ffffff;
  --color-border: rgba(26, 26, 46, 0.1);
  --color-text: #1a1a2e;
  --color-text-soft: #4a4e69;
  --color-text-muted: #7a7f9a;
  --color-primary: #ef233c;
  --color-primary-dark: #c81d31;
  --color-primary-soft: rgba(239, 35, 60, 0.12);
  --color-accent: #4cc9f0;
  --color-accent-2: #fca311;
  --color-secondary: #2b2d42;
  --color-navy: #14213d;
  --color-shadow: rgba(20, 33, 61, 0.12);
  --color-shadow-strong: rgba(20, 33, 61, 0.24);
  --gradient-hero: linear-gradient(135deg, #1a1a2e 0%, #2b2d42 40%, #14213d 100%);
  --gradient-accent: linear-gradient(120deg, #ef233c 0%, #fca311 55%, #4cc9f0 100%);
  --gradient-banner: linear-gradient(120deg, rgba(239, 35, 60, 0.92), rgba(76, 201, 240, 0.88));
  --gradient-card: linear-gradient(160deg, rgba(255, 255, 255, 0.9), rgba(244, 246, 251, 0.7));
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;
  --blur: 16px;
  --shadow-sm: 0 2px 8px var(--color-shadow);
  --shadow-md: 0 8px 24px var(--color-shadow);
  --shadow-lg: 0 18px 48px var(--color-shadow-strong);
  --space-xs: 6px;
  --space-sm: 12px;
  --space-md: 20px;
  --space-lg: 32px;
  --space-xl: 52px;
  --space-2xl: 80px;
  --max-width: 1200px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

[data-theme="dark"] {
  --color-bg: #0d0f1a;
  --color-bg-alt: #141726;
  --color-surface: rgba(28, 32, 52, 0.72);
  --color-surface-solid: #1c2034;
  --color-border: rgba(237, 242, 244, 0.12);
  --color-text: #edf2f4;
  --color-text-soft: #c3c9d9;
  --color-text-muted: #8d99ae;
  --color-primary: #ff4d67;
  --color-primary-dark: #ef233c;
  --color-primary-soft: rgba(255, 77, 103, 0.16);
  --color-accent: #4cc9f0;
  --color-accent-2: #fca311;
  --color-secondary: #edf2f4;
  --color-shadow: rgba(0, 0, 0, 0.4);
  --color-shadow-strong: rgba(0, 0, 0, 0.6);
  --gradient-hero: linear-gradient(135deg, #0a0c16 0%, #1a1d33 45%, #0f1c38 100%);
  --gradient-banner: linear-gradient(120deg, rgba(239, 35, 60, 0.55), rgba(76, 201, 240, 0.45));
  --gradient-card: linear-gradient(160deg, rgba(38, 43, 68, 0.85), rgba(20, 23, 38, 0.7));
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #0d0f1a;
    --color-bg-alt: #141726;
    --color-surface: rgba(28, 32, 52, 0.72);
    --color-surface-solid: #1c2034;
    --color-border: rgba(237, 242, 244, 0.12);
    --color-text: #edf2f4;
    --color-text-soft: #c3c9d9;
    --color-text-muted: #8d99ae;
    --color-primary: #ff4d67;
    --color-primary-dark: #ef233c;
    --color-primary-soft: rgba(255, 77, 103, 0.16);
    --color-secondary: #edf2f4;
    --color-shadow: rgba(0, 0, 0, 0.4);
    --color-shadow-strong: rgba(0, 0, 0, 0.6);
    --gradient-hero: linear-gradient(135deg, #0a0c16 0%, #1a1d33 45%, #0f1c38 100%);
    --gradient-banner: linear-gradient(120deg, rgba(239, 35, 60, 0.55), rgba(76, 201, 240, 0.45));
    --gradient-card: linear-gradient(160deg, rgba(38, 43, 68, 0.85), rgba(20, 23, 38, 0.7));
  }
}

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

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

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(239, 35, 60, 0.08), transparent 42%),
    radial-gradient(circle at 88% 4%, rgba(76, 201, 240, 0.09), transparent 40%),
    radial-gradient(circle at 50% 100%, rgba(252, 163, 17, 0.07), transparent 46%);
  background-attachment: fixed;
  overflow-x: hidden;
  transition: background-color var(--transition-base), color var(--transition-base);
}

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

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

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

h1,
h2,
h3,
h4 {
  line-height: 1.3;
  color: var(--color-text);
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(1.75rem, 4.2vw, 2.9rem);
}

h2 {
  font-size: clamp(1.4rem, 3vw, 2.1rem);
  margin-top: 0;
  position: relative;
  padding-bottom: var(--space-sm);
}

h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 64px;
  height: 4px;
  border-radius: var(--radius-pill);
  background: var(--gradient-accent);
}

h3 {
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
}

h4 {
  font-size: 1.05rem;
}

p {
  margin: 0 0 1em;
  color: var(--color-text-soft);
}

ul,
ol {
  padding-left: 1.35em;
  color: var(--color-text-soft);
}

li {
  margin-bottom: 0.5em;
}

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

time {
  color: var(--color-text-muted);
  font-size: 0.85em;
  font-variant-numeric: tabular-nums;
}

blockquote {
  margin: var(--space-md) 0;
  padding: var(--space-md) var(--space-lg);
  border-left: 4px solid var(--color-primary);
  background: var(--color-primary-soft);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--color-text-soft);
  font-style: italic;
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
}

blockquote p:last-child {
  margin-bottom: 0;
}

header[role="banner"] {
  position: sticky;
  top: 0;
  z-index: 900;
  background: var(--color-surface);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.top-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm) var(--space-lg);
  padding: 8px var(--space-md);
  font-size: 0.78rem;
  color: #edf2f4;
  background: var(--gradient-hero);
  letter-spacing: 0.02em;
}

.top-bar span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  opacity: 0.9;
  transition: opacity var(--transition-fast);
}

.top-bar span:hover {
  opacity: 1;
}

nav[role="navigation"] {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-sm) var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.logo {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  white-space: nowrap;
  transition: transform var(--transition-fast), filter var(--transition-fast);
}

.logo:hover {
  transform: scale(1.04);
  filter: drop-shadow(0 4px 12px rgba(239, 35, 60, 0.35));
}

nav[role="navigation"] > ul {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1 1 auto;
}

nav[role="navigation"] > ul li {
  margin: 0;
}

nav[role="navigation"] > ul a {
  display: inline-block;
  padding: 7px 13px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  color: var(--color-text-soft);
  font-weight: 500;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

nav[role="navigation"] > ul a:hover,
nav[role="navigation"] > ul a:focus-visible {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  transform: translateY(-2px);
}

form[role="search"] {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1 1 240px;
  max-width: 360px;
  margin-left: auto;
  position: relative;
}

form[role="search"] label {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

form[role="search"] input[type="search"] {
  flex: 1 1 auto;
  min-width: 0;
  padding: 9px 16px;
  font-size: 0.88rem;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

form[role="search"] input[type="search"]::placeholder {
  color: var(--color-text-muted);
}

form[role="search"] input[type="search"]:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-soft);
  background: var(--color-surface-solid);
  outline: none;
}

form[role="search"] button {
  padding: 9px 18px;
  font-size: 0.88rem;
  font-family: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--gradient-accent);
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
}

form[role="search"] button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(239, 35, 60, 0.35);
  filter: brightness(1.05);
}

#theme-toggle,
#menu-toggle {
  padding: 8px 15px;
  font-size: 0.82rem;
  font-family: inherit;
  font-weight: 600;
  color: var(--color-text-soft);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
}

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

#menu-toggle {
  display: none;
}

main {
  display: block;
}

main > nav[aria-label="面包屑导航"] {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-md) var(--space-md) 0;
}

main > nav[aria-label="面包屑导航"] ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

main > nav[aria-label="面包屑导航"] li {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

main > nav[aria-label="面包屑导航"] li + li::before {
  content: "/";
  color: var(--color-text-muted);
  opacity: 0.6;
}

main > nav[aria-label="面包屑导航"] a {
  color: var(--color-text-muted);
}

main > nav[aria-label="面包屑导航"] a:hover {
  color: var(--color-primary);
}

main > nav[aria-label="面包屑导航"] [aria-current="page"] {
  color: var(--color-text);
  font-weight: 600;
}

section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
  scroll-margin-top: 110px;
  opacity: 0;
  transform: translateY(28px);
  animation: fadeUp 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

section:nth-of-type(1) { animation-delay: 0.05s; }
section:nth-of-type(2) { animation-delay: 0.1s; }
section:nth-of-type(3) { animation-delay: 0.15s; }
section:nth-of-type(4) { animation-delay: 0.2s; }
section:nth-of-type(5) { animation-delay: 0.25s; }
section:nth-of-type(6) { animation-delay: 0.3s; }
section:nth-of-type(7) { animation-delay: 0.35s; }
section:nth-of-type(8) { animation-delay: 0.4s; }
section:nth-of-type(9) { animation-delay: 0.45s; }
section:nth-of-type(10) { animation-delay: 0.5s; }
section:nth-of-type(11) { animation-delay: 0.55s; }
section:nth-of-type(12) { animation-delay: 0.6s; }

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

#hero {
  position: relative;
  max-width: none;
  margin: 0;
  padding: var(--space-2xl) var(--space-md);
  background: var(--gradient-hero);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  overflow: hidden;
  isolation: isolate;
}

#hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 22%, rgba(239, 35, 60, 0.4), transparent 45%),
    radial-gradient(circle at 82% 18%, rgba(76, 201, 240, 0.35), transparent 42%),
    radial-gradient(circle at 60% 92%, rgba(252, 163, 17, 0.28), transparent 48%);
  z-index: -1;
  animation: heroGlow 14s ease-in-out infinite alternate;
}

@keyframes heroGlow {
  0% { transform: scale(1) translate(0, 0); opacity: 0.85; }
  100% { transform: scale(1.12) translate(-2%, 2%); opacity: 1; }
}

#hero > * {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

#hero-title {
  color: #fff;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  margin-top: 0;
  margin-bottom: var(--space-md);
  animation: fadeUp 0.9s cubic-bezier(0.22, 1, 0.36, 1) both;
}

#hero > p {
  color: rgba(237, 242, 244, 0.88);
  font-size: clamp(0.95rem, 1.6vw, 1.08rem);
  max-width: 860px;
  line-height: 1.85;
  animation: fadeUp 0.9s 0.12s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin: var(--space-lg) auto var(--space-xl);
  animation: fadeUp 0.9s 0.2s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 30px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  letter-spacing: 0.02em;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base), color var(--transition-base);
  will-change: transform;
}

.btn-primary {
  color: #fff;
  background: var(--gradient-accent);
  box-shadow: 0 10px 28px rgba(239, 35, 60, 0.42);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  color: #fff;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 16px 38px rgba(239, 35, 60, 0.55);
}

.btn-secondary {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  color: #fff;
  background: rgba(255, 255, 255, 0.22);
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.3);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-sm);
  list-style: none;
  margin: 0 auto;
  padding: 0;
  animation: fadeUp 0.9s 0.3s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.hero-stats li {
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: var(--space-md) var(--space-sm);
  text-align: center;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.09);
  border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(var(--blur)) saturate(150%);
  -webkit-backdrop-filter: blur(var(--blur)) saturate(150%);
  transition: transform var(--transition-base), background var(--transition-base), border-color var(--transition-base);
}

.hero-stats li:hover {
  transform: translateY(-6px);
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.35);
}

.hero-stats strong {
  font-size: clamp(1.35rem, 3vw, 2rem);
  font-weight: 800;
  color: #fff;
  font-variant-numeric: tabular-nums;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-stats span {
  font-size: 0.8rem;
  color: rgba(237, 242, 244, 0.78);
  letter-spacing: 0.03em;
}

#banner {
  position: relative;
}

#banner h2 {
  color: var(--color-text);
}

.carousel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.slide {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: var(--color-surface-solid);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  will-change: transform;
}

.slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gradient-banner);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
  mix-blend-mode: overlay;
}

.slide:hover {
  transform: translateY(-8px) scale(1.015);
  box-shadow: var(--shadow-lg);
}

.slide:hover::after {
  opacity: 0.35;
}

.slide svg {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--transition-slow);
}

.slide:hover svg {
  transform: scale(1.04);
}

#about,
#products,
#solutions,
#cases,
#news,
#articles,
#faq,
#howto,
#contact,
#sitemap,
#links {
  background: var(--color-surface);
  backdrop-filter: blur(var(--blur)) saturate(140%);
  -webkit-backdrop-filter: blur(var(--blur)) saturate(140%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-lg);
  transition: box-shadow var(--transition-base), border-color var(--transition-base), background var(--transition-base);
}

#about:hover,
#products:hover,
#solutions:hover,
#cases:hover,
#news:hover,
#articles:hover,
#faq:hover,
#howto:hover,
#contact:hover,
#sitemap:hover,
#links:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(239, 35, 60, 0.22);
}

#about h3,
#products h3,
#solutions h3,
#cases h3,
#howto h3,
#contact h3 {
  margin-top: var(--space-lg);
  padding-left: 14px;
  border-left: 4px solid var(--color-primary);
  color: var(--color-text);
}

#about h3:first-of-type,
#products h3:first-of-type,
#solutions h3:first-of-type,
#cases h3:first-of-type {
  margin-top: var(--space-md);
}

#products h4 {
  margin-top: var(--space-md);
  margin-bottom: var(--space-xs);
  color: var(--color-primary);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

#products h4::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gradient-accent);
  flex: 0 0 auto;
  box-shadow: 0 0 0 4px var(--color-primary-soft);
}

#cases blockquote {
  position: relative;
  padding-left: 56px;
}

#cases blockquote::before {
  content: "\201C";
  position: absolute;
  left: 16px;
  top: 6px;
  font-size: 3rem;
  line-height: 1;
  color: var(--color-primary);
  opacity: 0.5;
  font-family: Georgia, "Times New Roman", serif;
}

#news ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

#news li {
  position: relative;
  padding: var(--space-md) var(--space-md) var(--space-md) var(--space-lg);
  margin-bottom: var(--space-sm);
  border-radius: var(--radius-md);
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

#news li::before {
  content: "";
  position: absolute;
  left: var(--space-md);
  top: calc(var(--space-md) + 0.55em);
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gradient-accent);
  box-shadow: 0 0 0 4px var(--color-primary-soft);
}

#news li:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(239, 35, 60, 0.3);
}

#news h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}

#news h3 time {
  font-size: 0.78rem;
  font-weight: 600;
  color: #fff;
  background: var(--gradient-accent);
  padding: 2px 12px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.02em;
}

#news p {
  margin: 0;
  font-size: 0.92rem;
}

#articles > p:first-of-type {
  font-size: 1rem;
  color: var(--color-text-muted);
}

#articles article {
  position: relative;
  padding: var(--space-md) var(--space-lg) var(--space-md) var(--space-lg);
  margin-bottom: var(--space-md);
  border-radius: var(--radius-md);
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  overflow: hidden;
}

#articles article::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--gradient-accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition-base);
}

#articles article:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(76, 201, 240, 0.35);
}

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

#articles article h3 {
  margin: 0 0 6px;
  font-size: 1.1rem;
}

#articles article h3 a {
  color: var(--color-text);
  transition: color var(--transition-fast);
}

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

#articles article p {
  font-size: 0.92rem;
  margin-bottom: var(--space-sm);
}

#articles article > a:last-child {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 7px 18px;
  border-radius: var(--radius-pill);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

#articles article > a:last-child::after {
  content: "\2192";
  transition: transform var(--transition-fast);
}

#articles article > a:last-child:hover {
  background: var(--gradient-accent);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(239, 35, 60, 0.3);
}

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

#faq details {
  margin-bottom: var(--space-sm);
  border-radius: var(--radius-md);
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: box-shadow var(--transition-base), border-color var(--transition-base), background var(--transition-base);
}

#faq details[open] {
  box-shadow: var(--shadow-md);
  border-color: rgba(239, 35, 60, 0.28);
}

#faq details:hover {
  border-color: rgba(239, 35, 60, 0.3);
}

#faq summary {
  position: relative;
  cursor: pointer;
  padding: var(--space-md) var(--space-xl) var(--space-md) var(--space-md);
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--color-text);
  list-style: none;
  transition: background var(--transition-fast), color var(--transition-fast);
  user-select: none;
}

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

#faq summary::after {
  content: "+";
  position: absolute;
  right: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 400;
  line-height: 1;
  color: #fff;
  background: var(--gradient-accent);
  border-radius: 50%;
  transition: transform var(--transition-base), background var(--transition-base);
}

#faq details[open] summary::after {
  content: "\2212";
  transform: translateY(-50%) rotate(180deg);
}

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

#faq details > p {
  margin: 0;
  padding: 0 var(--space-md) var(--space-md);
  font-size: 0.93rem;
  animation: fadeUp 0.4s ease both;
}

#howto ol {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: var(--space-lg) 0;
  display: grid;
  gap: var(--space-md);
}

#howto ol > li {
  position: relative;
  counter-increment: step;
  padding: var(--space-md) var(--space-md) var(--space-md) 68px;
  margin: 0;
  border-radius: var(--radius-md);
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

#howto ol > li::before {
  content: counter(step);
  position: absolute;
  left: var(--space-md);
  top: var(--space-md);
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 800;
  color: #fff;
  background: var(--gradient-accent);
  border-radius: 50%;
  box-shadow: 0 6px 16px rgba(239, 35, 60, 0.35);
  transition: transform var(--transition-base);
}

#howto ol > li:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(76, 201, 240, 0.4);
}

#howto ol > li:hover::before {
  transform: scale(1.12) rotate(-6deg);
}

#howto ol > li h4 {
  margin: 0 0 6px;
  font-size: 1rem;
  color: var(--color-primary);
}

#howto ol > li p {
  margin: 0;
  font-size: 0.92rem;
}

#howto > ul {
  display: grid;
  gap: var(--space-sm);
  list-style: none;
  padding: 0;
  margin: var(--space-md) 0;
}

#howto > ul li {
  position: relative;
  padding: var(--space-sm) var(--space-md) var(--space-sm) 40px;
  margin: 0;
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  font-size: 0.92rem;
  transition: transform var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

#howto > ul li::before {
  content: "\2713";
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: #fff;
  background: var(--gradient-accent);
  border-radius: 50%;
}

#howto > ul li:hover {
  transform: translateX(5px);
  border-color: rgba(239, 35, 60, 0.3);
  background: var(--color-primary-soft);
}

#contact dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: var(--space-sm) var(--space-lg);
  margin: var(--space-lg) 0;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
}

#contact dt {
  font-weight: 700;
  color: var(--color-text);
  font-size: 0.92rem;
  padding: 8px 0;
  border-bottom: 1px dashed var(--color-border);
}

#contact dd {
  margin: 0;
  padding: 8px 0;
  color: var(--color-text-soft);
  font-size: 0.92rem;
  border-bottom: 1px dashed var(--color-border);
}

#contact dt:last-of-type,
#contact dd:last-of-type {
  border-bottom: none;
}

#contact dd a {
  font-weight: 600;
}

#sitemap ul,
#links ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  list-style: none;
  padding: 0;
  margin: var(--space-md) 0 0;
}

#sitemap li,
#links li {
  margin: 0;
}

#sitemap a,
#links a {
  display: inline-block;
  padding: 9px 20px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text-soft);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

#sitemap a:hover,
#links a:hover {
  color: #fff;
  background: var(--gradient-accent);
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(239, 35, 60, 0.32);
}

footer[role="contentinfo"] {
  margin-top: var(--space-xl);
  padding: var(--space-xl) var(--space-md) var(--space-2xl);
  background: var(--gradient-hero);
  color: rgba(237, 242, 244, 0.82);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  position: relative;
  overflow: hidden;
}

footer[role="contentinfo"]::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 10% 20%, rgba(239, 35, 60, 0.22), transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(76, 201, 240, 0.18), transparent 42%);
  pointer-events: none;
}

footer[role="contentinfo"] > section {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto var(--space-lg);
  padding: 0;
  opacity: 1;
  transform: none;
  animation: none;
}

footer[role="contentinfo"] h2 {
  font-size: 1.05rem;
  color: #fff;
  margin: 0 0 var(--space-sm);
  padding-bottom: 8px;
}

footer[role="contentinfo"] h2::after {
  width: 40px;
  height: 3px;
}

footer[role="contentinfo"] p {
  color: rgba(237, 242, 244, 0.78);
  font-size: 0.88rem;
  margin-bottom: 0.6em;
}

footer[role="contentinfo"] time {
  color: rgba(237, 242, 244, 0.6);
}

#back-to-top {
  position: fixed;
  right: var(--space-md);
  bottom: var(--space-md);
  z-index: 800;
  padding: 12px 18px;
  font-size: 0.82rem;
  font-family: inherit;
  font-weight: 700;
  color: #fff;
  background: var(--gradient-accent);
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  box-shadow: 0 10px 28px rgba(239, 35, 60, 0.42);
  transition: transform var(--transition-base), box-shadow var(--transition-base), opacity var(--transition-base);
  opacity: 0.92;
}

#back-to-top:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 16px 38px rgba(239, 35, 60, 0.55);
  opacity: 1;
}

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

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

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

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

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

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

@media (max-width: 1024px) {
  nav[role="navigation"] {
    gap: var(--space-sm);
  }

  form[role="search"] {
    order: 5;
    flex: 1 1 100%;
    max-width: none;
    margin-left: 0;
  }

  .hero-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  #menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  nav[role="navigation"] > ul {
    flex: 1 1 100%;
    order: 6;
    flex-direction: column;
    gap: 2px;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height var(--transition-slow), opacity var(--transition-base), padding var(--transition-base);
  }

  nav[role="navigation"] > ul li {
    width: 100%;
  }

  nav[role="navigation"] > ul a {
    display: block;
    width: 100%;
    padding: 11px 16px;
    border-radius: var(--radius-md);
  }

  nav[role="navigation"].menu-open > ul,
  nav[role="navigation"] > ul.menu-open {
    max-height: 520px;
    opacity: 1;
    padding-top: var(--space-sm);
  }

  #hero {
    padding: var(--space-xl) var(--space-md);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
  }

  section {
    padding: var(--space-lg) var(--space-md);
    border-radius: var(--radius-md);
  }

  #contact dl {
    grid-template-columns: 1fr;
    gap: 0;
    padding: var(--space-sm) var(--space-md);
  }

  #contact dt {
    padding-bottom: 2px;
    border-bottom: none;
  }

  #contact dd {
    padding-top: 0;
    padding-left: var(--space-sm);
    border-bottom: 1px dashed var(--color-border);
  }
}

@media (max-width: 620px) {
  body {
    font-size: 15px;
  }

  .top-bar {
    flex-direction: column;
    align-items: center;
    gap: 4px;
    font-size: 0.72rem;
    padding: 8px var(--space-sm);
  }

  .logo {
    font-size: 1.15rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
  }

  .hero-stats {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xs);
  }

  .hero-stats li {
    padding: var(--space-sm) var(--space-xs);
  }

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

  #howto ol > li {
    padding: var(--space-md) var(--space-md) var(--space-md) 58px;
  }

  #howto ol > li::before {
    width: 32px;
    height: 32px;
    font-size: 0.9rem;
  }

  #cases blockquote {
    padding-left: 44px;
  }

  #cases blockquote::before {
    left: 10px;
    font-size: 2.4rem;
  }

  #back-to-top {
    right: var(--space-sm);
    bottom: var(--space-sm);
    padding: 10px 15px;
    font-size: 0.78rem;
  }

  #sitemap a,
  #links a {
    padding: 8px 15px;
    font-size: 0.82rem;
  }
}

@media (max-width: 400px) {
  .hero-stats {
    grid-template-columns: 1fr;
  }

  #news h3 {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}

@media print {
  header[role="banner"],
  #back-to-top,
  .hero-actions,
  #theme-toggle,
  #menu-toggle {
    display: none !important;
  }

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

  section {
    opacity: 1;
    transform: none;
    box-shadow: none;
    border: 1px solid #ddd;
    page-break-inside: avoid;
  }

  a {
    color: #000;
    text-decoration: underline;
  }
}