:root {
  --primary: #1f3a5f;
  --primary-light: #2e5a88;
  --primary-lighter: #3d6b9e;
  --accent: #f2b134;
  --accent-light: #f7c95e;
  --accent-dark: #d99a1f;
  --bg: #f5f7fa;
  --bg-card: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.72);
  --text: #1a2332;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --border: #e2e8f0;
  --shadow: 0 4px 20px rgba(31, 58, 95, 0.08);
  --shadow-hover: 0 12px 40px rgba(31, 58, 95, 0.16);
  --shadow-sm: 0 2px 8px rgba(31, 58, 95, 0.06);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --max-width: 1200px;
  --header-height: 72px;
}

html[data-theme="dark"] {
  --primary: #6fa8dc;
  --primary-light: #8bbce6;
  --primary-lighter: #a8cfee;
  --accent: #f2b134;
  --accent-light: #f7c95e;
  --accent-dark: #d99a1f;
  --bg: #0f1724;
  --bg-card: #1a2636;
  --bg-glass: rgba(26, 38, 54, 0.78);
  --text: #e8edf4;
  --text-secondary: #b8c4d4;
  --text-muted: #8494a8;
  --border: #2a3a50;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.45);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
}

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

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

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
}

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

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

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

ul,
ol {
  list-style: none;
}

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

h1 { font-size: clamp(1.6rem, 4vw, 2.4rem); }
h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.3rem); }

p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

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

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

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

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

.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  height: var(--header-height);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--text);
  white-space: nowrap;
  flex-shrink: 0;
}

.logo svg {
  border-radius: 8px;
  transition: transform var(--transition);
}

.logo:hover svg {
  transform: rotate(-6deg) scale(1.05);
}

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

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-list a {
  display: block;
  padding: 8px 14px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 999px;
  position: relative;
  transition: color var(--transition), background var(--transition);
}

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

.nav-list a:hover {
  color: var(--primary);
  background: rgba(242, 177, 52, 0.1);
}

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

.search-form {
  display: flex;
  align-items: center;
  margin-left: auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.search-form:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(242, 177, 52, 0.18);
}

.search-form input {
  border: none;
  background: transparent;
  padding: 9px 16px;
  font-size: 0.88rem;
  color: var(--text);
  width: 170px;
  font-family: inherit;
  outline: none;
}

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

.search-form button {
  border: none;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  padding: 9px 18px;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: filter var(--transition);
}

.search-form button:hover {
  filter: brightness(1.12);
}

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

#theme-toggle:hover,
#menu-toggle:hover {
  transform: scale(1.08) rotate(8deg);
  border-color: var(--accent);
}

#menu-toggle {
  display: none;
}

/* ============ BREADCRUMB ============ */
.breadcrumb {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), border-color var(--transition);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 12px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

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

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

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

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

/* ============ HERO ============ */
.hero {
  position: relative;
  padding: 60px 0 50px;
  background:
    radial-gradient(circle at 15% 20%, rgba(242, 177, 52, 0.22), transparent 45%),
    radial-gradient(circle at 85% 10%, rgba(61, 107, 158, 0.35), transparent 50%),
    linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 55%, var(--primary-lighter) 100%);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero h1 {
  color: #fff;
  margin-bottom: 18px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
  animation: fadeUp 0.7s ease both;
}

.hero-lead {
  color: rgba(255, 255, 255, 0.88);
  max-width: 860px;
  font-size: 1.02rem;
  margin-bottom: 34px;
  animation: fadeUp 0.7s 0.1s ease both;
}

.hero-slider {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.18);
  animation: fadeUp 0.7s 0.2s ease both;
}

.hero-slider .slide {
  display: none;
}

.hero-slider .slide.active {
  display: block;
  animation: fadeIn 0.6s ease;
}

.hero-slider .slide svg {
  width: 100%;
  height: auto;
  display: block;
}

.slider-controls {
  position: absolute;
  bottom: 14px;
  right: 16px;
  display: flex;
  gap: 8px;
}

.slider-controls button {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}

.slider-controls button:hover,
.slider-controls button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #1a2332;
  transform: scale(1.1);
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 34px;
  animation: fadeUp 0.7s 0.3s ease both;
}

.stat {
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius);
  padding: 20px 14px;
  text-align: center;
  color: #fff;
  transition: transform var(--transition), background var(--transition);
}

.stat:hover {
  transform: translateY(-6px);
  background: rgba(255, 255, 255, 0.2);
}

.stat .num {
  display: block;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
}

.stat span:last-child {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.85);
}

/* ============ SECTIONS ============ */
main section {
  padding: 56px 0;
}

main section:nth-child(even) {
  background: var(--bg-card);
  transition: background var(--transition);
}

main section h2 {
  position: relative;
  padding-bottom: 14px;
  margin-bottom: 26px;
}

main section h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 64px;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--accent), var(--primary-light));
}

main section h3 {
  margin: 22px 0 10px;
  color: var(--primary);
}

main section p {
  max-width: 900px;
}

/* ============ NEWS ============ */
.news-list {
  display: grid;
  gap: 12px;
}

.news-list li {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  color: var(--text-secondary);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

main section:nth-child(even) .news-list li {
  background: var(--bg);
}

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

.news-list time {
  display: inline-block;
  font-weight: 700;
  color: var(--primary);
  margin-right: 10px;
  font-variant-numeric: tabular-nums;
}

/* ============ ARTICLES ============ */
#articles article {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

#articles article::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

#articles article:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}

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

#articles article h3 {
  margin-top: 0;
  margin-bottom: 8px;
}

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

#articles article a {
  display: inline-block;
  margin-top: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 6px 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}

#articles article a:hover {
  transform: translateX(4px);
  box-shadow: 0 6px 18px rgba(31, 58, 95, 0.3);
  filter: brightness(1.1);
  color: #fff;
}

/* ============ CASES ============ */
blockquote {
  background: var(--bg-card);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  margin-top: 20px;
  box-shadow: var(--shadow-sm);
}

blockquote p {
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

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

/* ============ HOWTO ============ */
#howto ol {
  counter-reset: step;
  display: grid;
  gap: 14px;
  margin: 16px 0;
}

#howto ol li {
  counter-increment: step;
  position: relative;
  padding: 16px 20px 16px 64px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  transition: transform var(--transition), box-shadow var(--transition);
}

#howto ol li::before {
  content: counter(step);
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #1a2332;
  font-weight: 800;
  display: grid;
  place-items: center;
  font-size: 0.95rem;
}

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

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

main section:nth-child(even) #faq details {
  background: var(--bg);
}

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

#faq summary {
  cursor: pointer;
  padding: 16px 48px 16px 20px;
  font-weight: 600;
  color: var(--text);
  position: relative;
  list-style: none;
  transition: background var(--transition), color var(--transition);
  user-select: none;
}

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

#faq summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--accent);
  transition: transform var(--transition);
  line-height: 1;
}

#faq details[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}

#faq summary:hover {
  background: rgba(242, 177, 52, 0.08);
  color: var(--primary);
}

#faq details p {
  padding: 0 20px 18px;
  margin: 0;
  animation: fadeIn 0.35s ease;
}

/* ============ CONTACT ============ */
.contact-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 12px;
  margin: 18px 0 26px;
}

.contact-list li {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  color: var(--text-secondary);
  font-size: 0.94rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.contact-list li:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
}

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

.sitemap-list a,
.friend-links a {
  display: inline-block;
  padding: 8px 18px;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: background var(--transition), color var(--transition), transform var(--transition), border-color var(--transition);
}

.sitemap-list a:hover,
.friend-links a:hover {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  border-color: transparent;
  transform: translateY(-3px);
}

/* ============ FOOTER ============ */
#site-footer {
  background: linear-gradient(160deg, #16283f 0%, #1f3a5f 100%);
  color: rgba(255, 255, 255, 0.75);
  padding: 56px 0 28px;
  margin-top: 0;
}

html[data-theme="dark"] #site-footer {
  background: linear-gradient(160deg, #0a1119 0%, #14202f 100%);
}

#site-footer .container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 28px;
}

.footer-col h3 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 12px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h3::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 32px;
  height: 3px;
  border-radius: 3px;
  background: var(--accent);
}

.footer-col p {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.88rem;
  line-height: 1.7;
  margin-bottom: 0;
}

.copyright {
  grid-column: 1 / -1;
  text-align: center;
  padding-top: 24px;
  margin-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 0;
}

/* ============ BACK TO TOP ============ */
#back-to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #1a2332;
  font-size: 1.3rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(242, 177, 52, 0.45);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
  z-index: 999;
}

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

#back-to-top:hover {
  transform: translateY(-5px) scale(1.06);
}

/* ============ SCROLL ANIMATIONS ============ */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: opacity, transform;
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.reveal-scale {
  opacity: 0;
  transform: scale(0.94);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@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,
  .reveal-left,
  .reveal-scale {
    opacity: 1;
    transform: none;
  }
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .header-inner {
    gap: 12px;
  }
  .nav-list a {
    padding: 8px 10px;
    font-size: 0.86rem;
  }
  .search-form input {
    width: 130px;
  }
}

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

  #menu-toggle {
    display: grid;
    order: 10;
  }

  nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg-glass);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 998;
  }

  nav.open {
    max-height: 420px;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 20px 20px;
  }

  .nav-list a {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
  }

  .nav-list a::after {
    display: none;
  }

  .search-form {
    margin-left: auto;
    flex: 1;
    max-width: 220px;
  }

  .search-form input {
    width: 100%;
    min-width: 0;
  }

  .search-form button {
    padding: 9px 14px;
    font-size: 0.8rem;
  }

  .logo span {
    font-size: 0.92rem;
  }

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

  main section {
    padding: 44px 0;
  }

  .hero {
    padding: 44px 0 40px;
  }

  .hero-slider .slide svg {
    min-height: 160px;
    object-fit: cover;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }

  .header-inner {
    gap: 8px;
  }

  .logo span {
    display: none;
  }

  .logo svg {
    width: 36px;
    height: 36px;
  }

  .search-form input {
    padding: 8px 12px;
    font-size: 0.82rem;
  }

  .search-form button {
    padding: 8px 12px;
    font-size: 0.76rem;
  }

  #theme-toggle,
  #menu-toggle {
    width: 38px;
    height: 38px;
    font-size: 1rem;
  }

  .stats {
    gap: 10px;
  }

  .stat {
    padding: 14px 8px;
  }

  .stat span:last-child {
    font-size: 0.76rem;
  }

  #articles article {
    padding: 18px;
  }

  #howto ol li {
    padding: 14px 16px 14px 56px;
  }

  #howto ol li::before {
    left: 12px;
    width: 30px;
    height: 30px;
    font-size: 0.85rem;
  }

  #faq summary {
    padding: 14px 42px 14px 16px;
    font-size: 0.94rem;
  }

  #faq details p {
    padding: 0 16px 16px;
    font-size: 0.92rem;
  }

  .contact-list {
    grid-template-columns: 1fr;
  }

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

  #site-footer {
    padding: 40px 0 22px;
  }
}