:root {
  --bg: #f4f5fb;
  --bg-soft: #ffffff;
  --bg-elevated: rgba(255, 255, 255, 0.72);
  --text: #1a1a2e;
  --text-soft: #4a4a63;
  --text-muted: #6b6b85;
  --primary: #e94560;
  --primary-soft: rgba(233, 69, 96, 0.12);
  --accent: #0f3460;
  --accent-soft: rgba(15, 52, 96, 0.1);
  --border: rgba(26, 26, 46, 0.1);
  --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.06);
  --shadow-md: 0 8px 28px rgba(26, 26, 46, 0.1);
  --shadow-lg: 0 18px 48px rgba(26, 26, 46, 0.16);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --header-h: 68px;
  --maxw: 1160px;
  --grad-hero: linear-gradient(135deg, #1a1a2e 0%, #16213e 45%, #0f3460 100%);
  --grad-primary: linear-gradient(135deg, #e94560 0%, #b83b5e 100%);
  --grad-accent: linear-gradient(135deg, #0f3460 0%, #533483 100%);
  --glass-blur: saturate(160%) blur(16px);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

html[data-theme="dark"] {
  --bg: #0e0f1a;
  --bg-soft: #16182a;
  --bg-elevated: rgba(22, 24, 42, 0.68);
  --text: #f5f5f7;
  --text-soft: #c9c9d8;
  --text-muted: #9a9ab0;
  --primary: #ff5c78;
  --primary-soft: rgba(255, 92, 120, 0.16);
  --accent: #6c8cff;
  --accent-soft: rgba(108, 140, 255, 0.14);
  --border: rgba(245, 245, 247, 0.12);
  --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);
  --grad-hero: linear-gradient(135deg, #0e0f1a 0%, #16213e 50%, #2a1b4d 100%);
  --grad-primary: linear-gradient(135deg, #ff5c78 0%, #b83b5e 100%);
  --grad-accent: linear-gradient(135deg, #2a3a6e 0%, #533483 100%);
}

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

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

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  background-image: radial-gradient(
      circle at 12% 0%,
      var(--primary-soft) 0%,
      transparent 42%
    ),
    radial-gradient(circle at 88% 12%, var(--accent-soft) 0%, transparent 46%);
  background-attachment: fixed;
  transition: background-color 0.4s var(--ease), color 0.4s var(--ease);
  overflow-x: hidden;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.25s var(--ease), opacity 0.25s var(--ease);
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
  border-radius: 6px;
}

h1,
h2,
h3,
h4 {
  line-height: 1.35;
  color: var(--text);
  margin: 0 0 0.6em;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(1.6rem, 4.2vw, 2.6rem);
}

h2 {
  font-size: clamp(1.35rem, 3vw, 2rem);
  position: relative;
  padding-left: 18px;
}

h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.22em;
  bottom: 0.22em;
  width: 6px;
  border-radius: var(--radius-pill);
  background: var(--grad-primary);
}

h3 {
  font-size: clamp(1.1rem, 2.2vw, 1.4rem);
  margin-top: 1.4em;
}

h4 {
  font-size: 1.05rem;
  color: var(--primary);
}

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

ul,
ol {
  margin: 0 0 1.2em;
  padding-left: 1.4em;
  color: var(--text-soft);
}

li {
  margin-bottom: 0.45em;
}

li::marker {
  color: var(--primary);
}

time {
  font-size: 0.85rem;
  color: var(--text-muted);
}

blockquote {
  margin: 1.2em 0;
  padding: 16px 20px;
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  border-left-width: 4px;
  box-shadow: var(--shadow-sm);
}

blockquote p {
  margin: 0 0 0.5em;
  font-style: italic;
  color: var(--text);
}

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

#site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-elevated);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: background-color 0.4s var(--ease), box-shadow 0.3s var(--ease);
}

.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  min-height: var(--header-h);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--text);
  font-weight: 800;
  letter-spacing: 0.02em;
}

.logo svg {
  border-radius: 12px;
  box-shadow: 0 4px 14px rgba(233, 69, 96, 0.35);
  transition: transform 0.35s var(--ease);
}

.logo:hover svg {
  transform: rotate(-6deg) scale(1.06);
}

.logo-text {
  font-size: 1.1rem;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  white-space: nowrap;
}

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

#primary-nav ul {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
  justify-content: flex-end;
}

#primary-nav li {
  margin: 0;
}

#primary-nav a {
  display: inline-block;
  padding: 8px 12px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-soft);
  border-radius: var(--radius-pill);
  transition: background-color 0.25s var(--ease), color 0.25s var(--ease),
    transform 0.25s var(--ease);
}

#primary-nav a:hover {
  color: var(--primary);
  background: var(--primary-soft);
  transform: translateY(-2px);
}

#menu-toggle,
#theme-toggle {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  line-height: 1;
  color: var(--text);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: transform 0.25s var(--ease), background-color 0.25s var(--ease),
    box-shadow 0.25s var(--ease);
}

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

#menu-toggle {
  display: none;
}

#menu-toggle[aria-expanded="true"] {
  background: var(--primary);
  color: #fff;
}

main {
  display: block;
}

main > section,
main > nav {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 56px 20px;
}

main > section + section {
  border-top: 1px solid var(--border);
}

#hero {
  max-width: none;
  margin: 0;
  padding: 0;
  color: #f5f5f7;
  background: var(--grad-hero);
  position: relative;
  overflow: hidden;
  border-bottom: none;
}

#hero::before,
#hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.55;
  pointer-events: none;
}

#hero::before {
  width: 420px;
  height: 420px;
  top: -140px;
  left: -120px;
  background: radial-gradient(circle, #e94560 0%, transparent 70%);
  animation: floatBlob 14s ease-in-out infinite alternate;
}

#hero::after {
  width: 460px;
  height: 460px;
  bottom: -180px;
  right: -140px;
  background: radial-gradient(circle, #6c8cff 0%, transparent 70%);
  animation: floatBlob 18s ease-in-out infinite alternate-reverse;
}

@keyframes floatBlob {
  0% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  100% {
    transform: translate3d(40px, 30px, 0) scale(1.15);
  }
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 72px 20px 64px;
  text-align: center;
}

#hero-title {
  color: #ffffff;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  margin-bottom: 0.5em;
  animation: fadeUp 0.8s var(--ease) both;
}

.hero-lead {
  max-width: 780px;
  margin: 0 auto 1.8em;
  color: rgba(245, 245, 247, 0.86);
  font-size: clamp(0.95rem, 1.8vw, 1.08rem);
  animation: fadeUp 0.8s 0.1s var(--ease) both;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin-bottom: 44px;
  animation: fadeUp 0.8s 0.2s var(--ease) both;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 30px;
  font-size: 0.98rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease),
    background-color 0.3s var(--ease), color 0.3s var(--ease);
  will-change: transform;
}

.btn-primary {
  color: #fff;
  background: var(--grad-primary);
  box-shadow: 0 10px 28px rgba(233, 69, 96, 0.4);
}

.btn-primary:hover {
  color: #fff;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 16px 38px rgba(233, 69, 96, 0.55);
}

.btn-secondary {
  color: #f5f5f7;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.28);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

.btn-secondary:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.hero-banner {
  margin: 0 auto 44px;
  max-width: 900px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: var(--shadow-lg);
  animation: fadeUp 0.9s 0.3s var(--ease) both;
  transition: transform 0.5s var(--ease), box-shadow 0.5s var(--ease);
}

.hero-banner:hover {
  transform: translateY(-6px) scale(1.005);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.5);
}

.hero-banner figure {
  margin: 0;
  position: relative;
}

.hero-banner figure svg {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.7s var(--ease);
}

.hero-banner:hover figure svg {
  transform: scale(1.04);
}

.hero-banner figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 14px 20px;
  font-size: 0.85rem;
  color: #f5f5f7;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
  text-align: left;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  max-width: 900px;
  margin: 0 auto;
  animation: fadeUp 0.9s 0.4s var(--ease) both;
}

.stat {
  padding: 20px 12px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 0.85rem;
  color: rgba(245, 245, 247, 0.8);
  transition: transform 0.35s var(--ease), background-color 0.35s var(--ease);
}

.stat:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.16);
}

.stat .num {
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  font-weight: 800;
  color: #fff;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

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

#breadcrumb {
  padding-top: 20px;
  padding-bottom: 20px;
}

#breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 12px 18px;
  font-size: 0.85rem;
  border-radius: var(--radius-pill);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-sm);
}

#breadcrumb li {
  margin: 0;
  color: var(--text-muted);
}

#breadcrumb li + li::before {
  content: "›";
  margin-right: 8px;
  color: var(--primary);
}

#brand,
#products,
#solutions,
#applications,
#cases,
#articles,
#knowledge,
#faq,
#howto,
#news,
#contact,
#sitemap,
#privacy,
#disclaimer,
#security {
  animation: fadeUp 0.7s var(--ease) both;
}

#brand h3 + p,
#products h4 + p {
  color: var(--text-soft);
}

#brand ul {
  display: grid;
  gap: 10px;
  list-style: none;
  padding: 0;
  counter-reset: brand;
}

#brand ul li {
  counter-increment: brand;
  position: relative;
  padding: 14px 18px 14px 58px;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

#brand ul li::before {
  content: counter(brand, decimal-leading-zero);
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 800;
  color: #fff;
  border-radius: 50%;
  background: var(--grad-primary);
  box-shadow: 0 4px 12px rgba(233, 69, 96, 0.35);
}

#brand ul li:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
}

#products > ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  list-style: none;
  padding: 0;
  margin-top: 24px;
}

#products > ul > li {
  position: relative;
  padding: 22px 20px 22px 54px;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease),
    border-color 0.35s var(--ease);
}

#products > ul > li::before {
  content: "✦";
  position: absolute;
  left: 18px;
  top: 20px;
  font-size: 1.15rem;
  color: var(--primary);
  transition: transform 0.35s var(--ease);
}

#products > ul > li::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    var(--primary-soft) 0%,
    transparent 60%
  );
  opacity: 0;
  transition: opacity 0.35s var(--ease);
  pointer-events: none;
}

#products > ul > li:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

#products > ul > li:hover::before {
  transform: rotate(90deg) scale(1.2);
}

#products > ul > li:hover::after {
  opacity: 1;
}

#solutions h3,
#applications h3,
#cases h3 {
  padding: 18px 22px;
  margin-top: 18px;
  margin-bottom: 0;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-bottom: none;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  font-size: 1.08rem;
  position: relative;
  overflow: hidden;
  transition: color 0.3s var(--ease);
}

#solutions h3::after,
#applications h3::after,
#cases h3::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--grad-primary);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.35s var(--ease);
}

#solutions h3:hover::after,
#applications h3:hover::after,
#cases h3:hover::after {
  transform: scaleY(1);
}

#solutions h3 + p,
#applications h3 + p,
#cases h3 + p {
  margin: 0 0 18px;
  padding: 18px 22px;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-top: none;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}

#solutions h3 + p:hover,
#applications h3 + p:hover,
#cases h3 + p:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

#cases blockquote {
  display: grid;
  gap: 12px;
}

#articles {
  display: grid;
  gap: 18px;
}

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

#articles article {
  position: relative;
  padding: 24px 26px;
  border-radius: var(--radius-lg);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease),
    border-color 0.4s var(--ease);
}

#articles article::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--grad-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}

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

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

#articles article h3 {
  margin-top: 0;
  margin-bottom: 0.35em;
  font-size: 1.12rem;
  transition: color 0.3s var(--ease);
}

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

#articles article p {
  font-size: 0.94rem;
  margin-bottom: 0.8em;
}

#articles article p:has(time) {
  margin-bottom: 0.5em;
}

#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary);
}

#articles article a::after {
  content: "→";
  transition: transform 0.3s var(--ease);
}

#articles article a:hover::after {
  transform: translateX(5px);
}

#knowledge h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 1.2em;
}

#knowledge h3::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: var(--grad-primary);
  flex-shrink: 0;
  transform: rotate(45deg);
}

#faq details {
  margin-bottom: 12px;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow 0.3s var(--ease), border-color 0.3s var(--ease),
    transform 0.3s var(--ease);
}

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

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

#faq summary {
  position: relative;
  padding: 16px 52px 16px 20px;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  transition: color 0.25s var(--ease), background-color 0.25s var(--ease);
}

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

#faq summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--primary);
  border-radius: 50%;
  background: var(--primary-soft);
  transition: transform 0.3s var(--ease), background-color 0.3s var(--ease),
    color 0.3s var(--ease);
}

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

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

#faq details > p {
  margin: 0;
  padding: 0 20px 18px;
  font-size: 0.94rem;
  color: var(--text-soft);
  animation: fadeUp 0.35s var(--ease) both;
}

#howto ol {
  counter-reset: howto;
  list-style: none;
  padding: 0;
  display: grid;
  gap: 12px;
}

#howto ol > li {
  counter-increment: howto;
  position: relative;
  padding: 16px 20px 16px 60px;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

#howto ol > li::before {
  content: counter(howto);
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 800;
  color: #fff;
  border-radius: 50%;
  background: var(--grad-accent);
  box-shadow: 0 4px 12px rgba(15, 52, 96, 0.35);
}

#howto ol > li:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
}

#howto ul {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 8px;
}

#howto ul > li {
  position: relative;
  padding-left: 26px;
  font-size: 0.94rem;
}

#howto ul > li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--primary);
  font-weight: 800;
}

#news ul {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 10px;
}

#news li {
  position: relative;
  padding: 14px 18px 14px 44px;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-sm);
  font-size: 0.94rem;
  color: var(--text-soft);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease),
    border-color 0.3s var(--ease);
}

#news li::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--grad-primary);
  box-shadow: 0 0 0 4px var(--primary-soft);
}

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

#news time {
  display: inline-block;
  margin-right: 6px;
  font-weight: 700;
  color: var(--primary);
}

#contact ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
}

#contact li {
  position: relative;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-sm);
  font-size: 0.93rem;
  color: var(--text-soft);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease),
    border-color 0.3s var(--ease);
}

#contact li:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

#contact li::first-letter {
  color: var(--primary);
  font-weight: 800;
}

#sitemap ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

#sitemap li {
  margin: 0;
}

#sitemap a {
  display: inline-block;
  padding: 8px 16px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-soft);
  border-radius: var(--radius-pill);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  transition: transform 0.25s var(--ease), background-color 0.25s var(--ease),
    color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

#sitemap a:hover {
  color: #fff;
  background: var(--grad-primary);
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(233, 69, 96, 0.35);
}

#sitemap h3 {
  margin-top: 1.6em;
}

#privacy,
#disclaimer,
#security {
  font-size: 0.95rem;
}

#privacy p,
#disclaimer p,
#security p {
  padding: 18px 22px;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-sm);
  margin: 0;
}

#site-footer {
  margin-top: 40px;
  padding: 44px 20px 56px;
  color: rgba(245, 245, 247, 0.82);
  background: var(--grad-hero);
  position: relative;
  overflow: hidden;
}

#site-footer::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(233, 69, 96, 0.4), transparent 70%);
  filter: blur(40px);
  pointer-events: none;
}

.footer-inner {
  position: relative;
  z-index: 1;
  max-width: var(--maxw);
  margin: 0 auto;
  text-align: center;
}

.footer-inner p {
  margin: 0 0 8px;
  color: rgba(245, 245, 247, 0.82);
  font-size: 0.9rem;
}

.footer-inner p:first-child {
  font-weight: 700;
  color: #fff;
}

#site-footer nav ul {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

#site-footer nav li {
  margin: 0;
}

#site-footer nav a {
  display: inline-block;
  padding: 7px 16px;
  font-size: 0.85rem;
  color: rgba(245, 245, 247, 0.85);
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.06);
  transition: transform 0.25s var(--ease), background-color 0.25s var(--ease),
    color 0.25s var(--ease);
}

#site-footer nav a:hover {
  color: #fff;
  background: var(--grad-primary);
  border-color: transparent;
  transform: translateY(-2px);
}

#back-to-top {
  position: fixed;
  right: 20px;
  bottom: 24px;
  z-index: 90;
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  background: var(--grad-primary);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 10px 26px rgba(233, 69, 96, 0.45);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity 0.35s var(--ease), transform 0.35s var(--ease),
    visibility 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

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

#back-to-top:hover {
  transform: translateY(-4px) scale(1.06);
  box-shadow: 0 16px 36px rgba(233, 69, 96, 0.6);
}

#site-search {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 95;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px 8px 18px;
  border-radius: var(--radius-pill);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-lg);
  max-width: calc(100% - 40px);
  transition: box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}

#site-search:focus-within {
  box-shadow: 0 12px 40px rgba(233, 69, 96, 0.3);
  transform: translateX(-50%) translateY(-2px);
}

#site-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;
}

#search-input {
  flex: 1;
  min-width: 0;
  width: 220px;
  padding: 8px 4px;
  font-size: 0.9rem;
  color: var(--text);
  background: transparent;
  border: none;
  outline: none;
}

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

#search-submit {
  flex-shrink: 0;
  padding: 8px 18px;
  font-size: 0.86rem;
  font-weight: 700;
  color: #fff;
  background: var(--grad-primary);
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

#search-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(233, 69, 96, 0.4);
}

@media (min-width: 860px) {
  #articles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  #articles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 960px) {
  #primary-nav ul {
    gap: 2px;
  }

  #primary-nav a {
    padding: 7px 9px;
    font-size: 0.84rem;
  }
}

@media (max-width: 860px) {
  :root {
    --header-h: 62px;
  }

  .header-inner {
    padding: 8px 16px;
    gap: 10px;
  }

  #menu-toggle {
    display: inline-flex;
    order: 2;
  }

  #theme-toggle {
    order: 3;
  }

  .logo {
    order: 1;
    flex: 1;
  }

  .logo-text {
    font-size: 1rem;
  }

  #primary-nav {
    order: 4;
    flex-basis: 100%;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.4s var(--ease), opacity 0.3s var(--ease),
      margin 0.3s var(--ease);
  }

  #primary-nav.is-open {
    max-height: 560px;
    opacity: 1;
    margin-top: 6px;
  }

  #primary-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 10px 0 6px;
    border-top: 1px solid var(--border);
  }

  #primary-nav a {
    display: block;
    padding: 11px 14px;
    font-size: 0.92rem;
    border-radius: var(--radius-sm);
    background: var(--bg-soft);
    border: 1px solid var(--border);
  }

  #primary-nav a:hover {
    transform: none;
  }

  main > section,
  main > nav {
    padding: 40px 16px;
  }

  .hero-inner {
    padding: 54px 16px 48px;
  }

  .hero-actions {
    margin-bottom: 32px;
  }

  .btn-primary,
  .btn-secondary {
    padding: 12px 24px;
    font-size: 0.92rem;
    flex: 1 1 200px;
  }

  .stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .stat {
    padding: 16px 10px;
  }

  h2 {
    padding-left: 14px;
  }

  h2::before {
    width: 5px;
  }

  #site-search {
    bottom: 16px;
    padding: 6px 8px 6px 14px;
  }

  #search-input {
    width: 100%;
    font-size: 0.86rem;
  }

  #search-submit {
    padding: 7px 14px;
    font-size: 0.82rem;
  }

  #back-to-top {
    right: 14px;
    bottom: 82px;
    width: 42px;
    height: 42px;
  }
}

@media (max-width: 520px) {
  body {
    font-size: 15px;
  }

  .logo-text {
    max-width: 130px;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .hero-banner figcaption {
    padding: 10px 14px;
    font-size: 0.78rem;
  }

  #brand ul li,
  #howto ol > li {
    padding-left: 52px;
  }

  #products > ul {
    grid-template-columns: 1fr;
  }

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

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

  #faq summary {
    padding: 14px 46px 14px 16px;
    font-size: 0.92rem;
  }

  #faq details > p {
    padding: 0 16px 16px;
    font-size: 0.9rem;
  }

  #sitemap a {
    padding: 7px 13px;
    font-size: 0.82rem;
  }

  .footer-inner p {
    font-size: 0.84rem;
  }
}

@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;
  }
}

@media print {
  #site-header,
  #back-to-top,
  #site-search,
  #site-footer nav,
  .hero-actions {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }
}
</parameter>