:root {
  --brand: #1a73e8;
  --brand-2: #6c5ce7;
  --brand-3: #00b8a9;
  --accent: #ff7a59;
  --bg: #f5f7fb;
  --bg-soft: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.62);
  --bg-glass-strong: rgba(255, 255, 255, 0.82);
  --text: #17202b;
  --text-soft: #4a5666;
  --text-mute: #7a8699;
  --border: rgba(23, 32, 43, 0.09);
  --border-strong: rgba(23, 32, 43, 0.16);
  --shadow-sm: 0 2px 8px rgba(23, 32, 43, 0.06);
  --shadow-md: 0 12px 32px rgba(23, 32, 43, 0.1);
  --shadow-lg: 0 24px 64px rgba(23, 32, 43, 0.14);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --grad-hero: linear-gradient(135deg, #1a73e8 0%, #6c5ce7 46%, #00b8a9 100%);
  --grad-soft: linear-gradient(135deg, rgba(26, 115, 232, 0.1), rgba(108, 92, 231, 0.08), rgba(0, 184, 169, 0.1));
  --grad-cta: linear-gradient(135deg, #1a73e8, #6c5ce7);
  --header-h: 68px;
  --maxw: 1180px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}

html[data-theme="dark"] {
  --bg: #0b1018;
  --bg-soft: #121a26;
  --bg-glass: rgba(18, 26, 38, 0.6);
  --bg-glass-strong: rgba(18, 26, 38, 0.86);
  --text: #e8edf5;
  --text-soft: #b3bfd0;
  --text-mute: #8391a6;
  --border: rgba(232, 237, 245, 0.1);
  --border-strong: rgba(232, 237, 245, 0.2);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.6);
  --grad-soft: linear-gradient(135deg, rgba(26, 115, 232, 0.16), rgba(108, 92, 231, 0.14), rgba(0, 184, 169, 0.16));
  color-scheme: dark;
}

*,
*::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: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  background-image:
    radial-gradient(900px 500px at 8% -8%, rgba(26, 115, 232, 0.13), transparent 60%),
    radial-gradient(760px 460px at 96% 4%, rgba(108, 92, 231, 0.12), transparent 62%),
    radial-gradient(700px 520px at 50% 100%, rgba(0, 184, 169, 0.1), transparent 60%);
  background-attachment: fixed;
  overflow-x: hidden;
  transition: background-color 0.35s var(--ease), color 0.35s var(--ease);
}

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

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

a:hover,
a:focus-visible {
  color: var(--brand-2);
}

:focus-visible {
  outline: 3px solid rgba(26, 115, 232, 0.55);
  outline-offset: 3px;
  border-radius: 6px;
}

.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;
}

/* ============ Header ============ */
#site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--border);
  transition: background-color 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

#site-header.is-scrolled {
  box-shadow: var(--shadow-md);
  background: var(--bg-glass-strong);
}

.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  min-height: var(--header-h);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

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

.brand svg {
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.brand:hover svg {
  transform: rotate(-6deg) scale(1.06);
  box-shadow: 0 10px 24px rgba(26, 115, 232, 0.35);
}

.brand-name {
  font-size: 1.22rem;
  background: var(--grad-cta);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

#main-nav {
  margin-left: auto;
}

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

#main-nav a {
  display: inline-block;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--text-soft);
  position: relative;
  transition: color 0.25s var(--ease), background-color 0.25s var(--ease), transform 0.25s var(--ease);
}

#main-nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-cta);
  transform: translateX(-50%);
  transition: width 0.3s var(--ease);
}

#main-nav a:hover,
#main-nav a:focus-visible {
  color: var(--brand);
  background: rgba(26, 115, 232, 0.08);
  transform: translateY(-1px);
}

#main-nav a:hover::after,
#main-nav a:focus-visible::after {
  width: 42%;
}

#site-search {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px;
  border-radius: 999px;
  background: var(--bg-glass-strong);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

#site-search:focus-within {
  border-color: rgba(26, 115, 232, 0.5);
  box-shadow: 0 0 0 4px rgba(26, 115, 232, 0.14);
}

#search-input {
  width: 180px;
  padding: 8px 12px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 0.9rem;
  outline: none;
}

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

#site-search button {
  padding: 8px 16px;
  border: 0;
  border-radius: 999px;
  background: var(--grad-cta);
  color: #fff;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), filter 0.25s var(--ease);
}

#site-search button:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(26, 115, 232, 0.35);
  filter: brightness(1.05);
}

#theme-toggle,
#menu-toggle {
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--bg-glass-strong);
  color: var(--text);
  font-size: 1.05rem;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), background-color 0.3s var(--ease), border-color 0.3s var(--ease);
}

#theme-toggle:hover,
#menu-toggle:hover {
  transform: translateY(-2px) rotate(8deg);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

#menu-toggle {
  display: none;
}

/* ============ Layout ============ */
main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px 40px;
}

section {
  margin: 56px 0;
  padding: 40px 36px;
  border-radius: var(--radius-lg);
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: box-shadow 0.4s var(--ease), transform 0.4s var(--ease), border-color 0.4s var(--ease);
}

section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--grad-soft);
  opacity: 0;
  transition: opacity 0.5s var(--ease);
  pointer-events: none;
}

section:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

section:hover::before {
  opacity: 0.6;
}

section > * {
  position: relative;
  z-index: 1;
}

h1,
h2,
h3 {
  line-height: 1.3;
  margin: 0 0 0.6em;
  letter-spacing: -0.01em;
  font-weight: 800;
}

h1 {
  font-size: clamp(1.7rem, 3.6vw, 2.6rem);
  color: var(--text);
}

h2 {
  font-size: clamp(1.4rem, 2.6vw, 1.95rem);
  color: var(--text);
  position: relative;
  padding-bottom: 14px;
}

h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 64px;
  height: 4px;
  border-radius: 4px;
  background: var(--grad-cta);
  box-shadow: 0 4px 14px rgba(26, 115, 232, 0.4);
}

h3 {
  font-size: clamp(1.1rem, 1.8vw, 1.28rem);
  color: var(--text);
  margin-top: 1.6em;
}

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: 0.4em 0;
}

li::marker {
  color: var(--brand);
  font-weight: 700;
}

strong {
  color: var(--text);
}

/* ============ Breadcrumb ============ */
.breadcrumb {
  margin: 24px 0 0;
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  overflow: visible;
}

.breadcrumb::before {
  display: none;
}

.breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 0;
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-mute);
}

.breadcrumb li {
  margin: 0;
  display: inline-flex;
  align-items: center;
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--text-mute);
  opacity: 0.7;
}

.breadcrumb a {
  color: var(--text-soft);
  padding: 2px 6px;
  border-radius: 6px;
}

.breadcrumb a:hover {
  color: var(--brand);
  background: rgba(26, 115, 232, 0.08);
}

.breadcrumb [aria-current="page"] {
  color: var(--brand);
  font-weight: 700;
}

/* ============ Hero ============ */
#hero {
  margin-top: 24px;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  overflow: visible;
}

#hero::before {
  display: none;
}

.hero-slider {
  position: relative;
  border-radius: var(--radius-xl);
  padding: 56px 48px;
  color: #fff;
  background: var(--grad-hero);
  background-size: 200% 200%;
  animation: gradientShift 16s ease infinite;
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, 0.25);
  overflow: hidden;
  isolation: isolate;
}

.hero-slider::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(420px 300px at 88% 12%, rgba(255, 255, 255, 0.28), transparent 70%),
    radial-gradient(380px 280px at 10% 92%, rgba(255, 255, 255, 0.18), transparent 70%);
  z-index: -1;
  pointer-events: none;
}

.hero-slider::after {
  content: "";
  position: absolute;
  width: 320px;
  height: 320px;
  right: -90px;
  bottom: -120px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  filter: blur(4px);
  z-index: -1;
  animation: floatBlob 12s ease-in-out infinite;
}

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

@keyframes floatBlob {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(-18px, -24px, 0) scale(1.08); }
}

.slide {
  max-width: 780px;
  animation: slideIn 0.8s var(--ease) both;
}

.slide[aria-hidden="true"] {
  display: none;
}

.slide h1,
.slide h2 {
  color: #fff;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.18);
}

.slide h1::after,
.slide h2::after {
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.slide p {
  color: rgba(255, 255, 255, 0.92);
  font-size: 1.02rem;
  max-width: 68ch;
}

.slide .cta,
.slide .cta-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  margin: 8px 10px 0 0;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.96rem;
  letter-spacing: 0.02em;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), background-color 0.3s var(--ease), color 0.3s var(--ease);
}

.slide .cta {
  background: #fff;
  color: var(--brand);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.22);
}

.slide .cta:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.3);
  color: var(--brand-2);
}

.slide .cta-secondary {
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.6);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.slide .cta-secondary:hover {
  background: rgba(255, 255, 255, 0.26);
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.24);
  color: #fff;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: -34px;
  padding: 0 24px;
  position: relative;
  z-index: 3;
}

.stat {
  padding: 22px 18px;
  text-align: center;
  border-radius: var(--radius-md);
  background: var(--bg-glass-strong);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

.stat:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(26, 115, 232, 0.4);
}

.stat .num {
  display: block;
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  background: var(--grad-cta);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.stat .label {
  display: block;
  margin-top: 6px;
  font-size: 0.84rem;
  color: var(--text-mute);
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* ============ Cards / content blocks ============ */
#products ul,
#solutions ul,
#cases ul,
#howto ul,
#howto ol {
  padding-left: 1.3em;
}

#cases blockquote {
  margin: 18px 0;
  padding: 20px 24px;
  border-radius: var(--radius-md);
  background: var(--bg-glass-strong);
  border: 1px solid var(--border);
  border-left: 4px solid var(--brand);
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

#cases blockquote::before {
  content: "\201C";
  position: absolute;
  top: -6px;
  left: 14px;
  font-size: 3rem;
  line-height: 1;
  color: var(--brand);
  opacity: 0.18;
  font-family: Georgia, serif;
}

#cases blockquote:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
  border-left-color: var(--brand-2);
}

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

/* ============ News ============ */
.news-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.news-list li {
  margin: 0;
  padding: 16px 20px 16px 46px;
  border-radius: var(--radius-md);
  background: var(--bg-glass-strong);
  border: 1px solid var(--border);
  color: var(--text-soft);
  position: relative;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease), background-color 0.3s var(--ease);
}

.news-list li::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 50%;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  transform: translateY(-50%);
  background: var(--grad-cta);
  box-shadow: 0 0 0 4px rgba(26, 115, 232, 0.14);
  transition: box-shadow 0.3s var(--ease);
}

.news-list li:hover {
  transform: translateX(6px);
  border-color: rgba(26, 115, 232, 0.35);
  box-shadow: var(--shadow-md);
}

.news-list li:hover::before {
  box-shadow: 0 0 0 6px rgba(26, 115, 232, 0.2);
}

.news-list time {
  display: inline-block;
  margin-right: 10px;
  padding: 2px 10px;
  border-radius: 999px;
  background: rgba(26, 115, 232, 0.1);
  color: var(--brand);
  font-size: 0.82rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

/* ============ Articles ============ */
#articles {
  display: grid;
  gap: 0;
}

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

#articles article {
  margin: 0 0 18px;
  padding: 24px 26px;
  border-radius: var(--radius-md);
  background: var(--bg-glass-strong);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

#articles article::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--grad-soft);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  pointer-events: none;
}

#articles article:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(108, 92, 231, 0.35);
}

#articles article:hover::after {
  opacity: 1;
}

#articles article > * {
  position: relative;
  z-index: 1;
}

#articles article h3 {
  margin-top: 0;
  margin-bottom: 6px;
  transition: color 0.3s var(--ease);
}

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

#articles article time {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 0.82rem;
  color: var(--text-mute);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

#articles article p {
  margin-bottom: 12px;
}

#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--brand);
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(26, 115, 232, 0.08);
  transition: gap 0.3s var(--ease), background-color 0.3s var(--ease), color 0.3s var(--ease), transform 0.3s var(--ease);
}

#articles article a::after {
  content: "\2192";
  transition: transform 0.3s var(--ease);
}

#articles article a:hover {
  gap: 10px;
  background: var(--grad-cta);
  color: #fff;
  transform: translateX(2px);
}

#articles article a:hover::after {
  transform: translateX(3px);
}

/* ============ HowTo ============ */
#howto ol {
  counter-reset: step;
  list-style: none;
  padding-left: 0;
  display: grid;
  gap: 10px;
}

#howto ol li {
  counter-increment: step;
  position: relative;
  padding: 14px 18px 14px 58px;
  border-radius: var(--radius-md);
  background: var(--bg-glass-strong);
  border: 1px solid var(--border);
  margin: 0;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}

#howto ol li::before {
  content: counter(step);
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--grad-cta);
  color: #fff;
  font-weight: 800;
  font-size: 0.9rem;
  box-shadow: 0 6px 16px rgba(26, 115, 232, 0.35);
}

#howto ol li:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(26, 115, 232, 0.35);
}

#howto ul li {
  padding-left: 4px;
}

/* ============ FAQ ============ */
#faq details {
  margin: 0 0 12px;
  border-radius: var(--radius-md);
  background: var(--bg-glass-strong);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow 0.35s var(--ease), border-color 0.35s var(--ease), transform 0.35s var(--ease);
}

#faq details:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(26, 115, 232, 0.3);
}

#faq details[open] {
  border-color: rgba(26, 115, 232, 0.45);
  box-shadow: var(--shadow-md);
}

#faq summary {
  position: relative;
  padding: 18px 56px 18px 22px;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease);
}

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

#faq summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(26, 115, 232, 0.1);
  color: var(--brand);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1;
  transition: transform 0.35s var(--ease), background-color 0.35s var(--ease), color 0.35s var(--ease);
}

#faq details[open] summary {
  color: var(--brand);
  background: rgba(26, 115, 232, 0.06);
}

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

#faq summary:hover {
  background: rgba(26, 115, 232, 0.06);
}

#faq details p {
  margin: 0;
  padding: 0 22px 20px;
  animation: fadeIn 0.4s var(--ease);
}

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

/* ============ Contact ============ */
#contact address {
  font-style: normal;
  display: grid;
  gap: 10px;
  margin-bottom: 24px;
}

#contact address p {
  margin: 0;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  background: var(--bg-glass-strong);
  border: 1px solid var(--border);
  color: var(--text-soft);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}

#contact address p:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
  border-color: rgba(0, 184, 169, 0.4);
}

#contact address a {
  font-weight: 700;
  color: var(--brand);
  border-bottom: 1px dashed rgba(26, 115, 232, 0.4);
}

#contact address a:hover {
  color: var(--brand-3);
  border-bottom-color: var(--brand-3);
}

/* ============ Sitemap / Links ============ */
#sitemap ul,
#links ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

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

#sitemap a,
#links a {
  display: inline-block;
  padding: 9px 18px;
  border-radius: 999px;
  background: var(--bg-glass-strong);
  border: 1px solid var(--border);
  color: var(--text-soft);
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), background-color 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
}

#sitemap a:hover,
#links a:hover {
  transform: translateY(-3px);
  background: var(--grad-cta);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 12px 26px rgba(26, 115, 232, 0.3);
}

/* ============ Footer ============ */
footer {
  margin-top: 40px;
  padding: 56px 20px 32px;
  background: var(--bg-glass-strong);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-top: 1px solid var(--border);
  position: relative;
}

footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--grad-hero);
  background-size: 200% 100%;
  animation: gradientShift 10s ease infinite;
}

footer > section {
  max-width: var(--maxw);
  margin: 0 auto 28px;
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  border-radius: 0;
  overflow: visible;
}

footer > section::before {
  display: none;
}

footer h2 {
  font-size: 1.05rem;
  padding-bottom: 10px;
  margin-bottom: 12px;
}

footer h2::after {
  width: 40px;
  height: 3px;
}

footer p {
  font-size: 0.92rem;
  color: var(--text-mute);
  margin: 0 0 8px;
}

footer > p {
  max-width: var(--maxw);
  margin: 24px auto 0;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.86rem;
  color: var(--text-mute);
}

/* ============ Back to top ============ */
#back-to-top {
  position: fixed;
  right: 22px;
  bottom: 26px;
  z-index: 90;
  width: 50px;
  height: 50px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: var(--grad-cta);
  color: #fff;
  font-size: 1.25rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 12px 30px rgba(26, 115, 232, 0.42);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.9);
  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) scale(1);
}

#back-to-top:hover {
  transform: translateY(-4px) scale(1.06);
  box-shadow: 0 18px 40px rgba(108, 92, 231, 0.5);
}

/* ============ Scroll reveal ============ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  will-change: opacity, transform;
}

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

/* ============ Responsive ============ */
@media (min-width: 900px) {
  #articles {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }

  #articles > h2 {
    margin-bottom: 8px;
  }

  #articles article {
    margin: 0;
    height: 100%;
    display: flex;
    flex-direction: column;
  }

  #articles article a {
    margin-top: auto;
    align-self: flex-start;
  }
}

@media (max-width: 1080px) {
  .header-inner {
    gap: 12px;
  }

  #search-input {
    width: 130px;
  }

  #main-nav a {
    padding: 8px 9px;
    font-size: 0.9rem;
  }
}

@media (max-width: 900px) {
  :root {
    --header-h: 62px;
  }

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

  #menu-toggle {
    display: inline-flex;
    order: 3;
    margin-left: auto;
  }

  #main-nav {
    order: 5;
    flex-basis: 100%;
    width: 100%;
    margin-left: 0;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.45s var(--ease), opacity 0.35s var(--ease);
  }

  #main-nav.is-open {
    max-height: 520px;
    opacity: 1;
  }

  #main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 10px 0 4px;
    border-top: 1px solid var(--border);
  }

  #main-nav a {
    display: block;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.96rem;
  }

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

  #site-search {
    order: 4;
    flex-basis: 100%;
    width: 100%;
  }

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

  #theme-toggle {
    order: 2;
    margin-left: 0;
  }

  .brand {
    order: 1;
  }

  main {
    padding: 0 16px 32px;
  }

  section {
    margin: 40px 0;
    padding: 28px 22px;
    border-radius: var(--radius-md);
  }

  .hero-slider {
    padding: 40px 26px;
    border-radius: var(--radius-lg);
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    padding: 0 10px;
    margin-top: -22px;
  }

  .stat {
    padding: 18px 12px;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 15px;
  }

  .brand-name {
    font-size: 1.05rem;
  }

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

  .hero-slider {
    padding: 32px 20px;
  }

  .slide .cta,
  .slide .cta-secondary {
    display: flex;
    width: 100%;
    margin: 8px 0 0;
  }

  .stats {
    grid-template-columns: 1fr 1fr;
    padding: 0;
  }

  .stat .label {
    font-size: 0.76rem;
  }

  section {
    padding: 24px 18px;
    border-radius: var(--radius-md);
  }

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

  #contact address p,
  .news-list li {
    padding: 14px 16px;
  }

  .news-list li {
    padding-left: 42px;
  }

  .news-list li::before {
    left: 16px;
  }

  #howto ol li {
    padding: 14px 14px 14px 52px;
  }

  #howto ol li::before {
    left: 12px;
    width: 28px;
    height: 28px;
    font-size: 0.82rem;
  }

  #faq summary {
    padding: 16px 52px 16px 16px;
    font-size: 0.96rem;
  }

  #faq details p {
    padding: 0 16px 16px;
  }

  #back-to-top {
    right: 14px;
    bottom: 16px;
    width: 44px;
    height: 44px;
  }

  footer {
    padding: 40px 16px 24px;
  }
}

@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;
  }
}

@media (prefers-contrast: more) {
  :root {
    --border: rgba(23, 32, 43, 0.28);
    --text-soft: #2c3644;
    --text-mute: #4a5666;
  }

  html[data-theme="dark"] {
    --border: rgba(232, 237, 245, 0.34);
    --text-soft: #d6deea;
    --text-mute: #aeb9c9;
  }
}

@media print {
  #site-header,
  #back-to-top,
  #theme-toggle,
  #menu-toggle,
  #site-search,
  .hero-slider::after {
    display: none !important;
  }

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

  section {
    box-shadow: none;
    border: 1px solid #ccc;
    break-inside: avoid;
  }

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