:root {
  --primary: #ff6b9d;
  --primary-dark: #e8508a;
  --primary-light: #ffb3cc;
  --secondary: #6b9dff;
  --accent: #ffb86b;
  --bg: #fff8fb;
  --bg-alt: #ffffff;
  --bg-soft: #fff0f5;
  --text: #2d2a33;
  --text-soft: #5c5763;
  --text-muted: #8b8592;
  --border: #f3dbe6;
  --card-bg: rgba(255, 255, 255, 0.72);
  --glass: rgba(255, 255, 255, 0.55);
  --glass-border: rgba(255, 255, 255, 0.7);
  --shadow-sm: 0 2px 8px rgba(255, 107, 157, 0.08);
  --shadow: 0 8px 28px rgba(255, 107, 157, 0.12);
  --shadow-lg: 0 18px 48px rgba(255, 107, 157, 0.18);
  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 28px;
  --header-h: 72px;
  --gradient-hero: linear-gradient(135deg, #ffe0ec 0%, #f3e8ff 45%, #e3f0ff 100%);
  --gradient-primary: linear-gradient(135deg, #ff6b9d 0%, #ff8fb8 50%, #ffb3cc 100%);
  --gradient-accent: linear-gradient(120deg, #ff6b9d 0%, #ffb86b 100%);
  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
}

[data-theme="dark"] {
  --primary: #ff7fae;
  --primary-dark: #ff5c96;
  --primary-light: #7a3b56;
  --secondary: #7fa8ff;
  --accent: #ffc078;
  --bg: #16131b;
  --bg-alt: #1e1a25;
  --bg-soft: #241f2e;
  --text: #f2eef5;
  --text-soft: #c9c2d2;
  --text-muted: #948da0;
  --border: #332c3f;
  --card-bg: rgba(36, 31, 46, 0.72);
  --glass: rgba(40, 34, 52, 0.6);
  --glass-border: rgba(255, 255, 255, 0.08);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow: 0 8px 28px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.5);
  --gradient-hero: linear-gradient(135deg, #2a1f33 0%, #241f3a 45%, #1c2436 100%);
  --gradient-primary: linear-gradient(135deg, #ff7fae 0%, #d95a8c 50%, #b04876 100%);
}

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

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

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(255, 107, 157, 0.08), transparent 42%),
    radial-gradient(circle at 88% 22%, rgba(107, 157, 255, 0.08), transparent 40%),
    radial-gradient(circle at 50% 95%, rgba(255, 184, 107, 0.06), transparent 45%);
  background-attachment: fixed;
  overflow-x: hidden;
  transition: background-color var(--transition), color var(--transition);
}

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

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

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

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

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

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

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

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

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

.brand svg {
  border-radius: 12px;
  box-shadow: 0 4px 14px rgba(255, 107, 157, 0.32);
  transition: transform var(--transition);
}

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

.brand-name {
  font-size: 1.25rem;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.main-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
}

.main-nav a {
  display: block;
  padding: 8px 12px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-soft);
  border-radius: 999px;
  white-space: nowrap;
  transition: color var(--transition), background var(--transition), transform var(--transition);
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--primary-dark);
  background: var(--bg-soft);
  transform: translateY(-1px);
}

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

.site-search {
  display: flex;
  align-items: center;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 4px 4px 16px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.site-search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(255, 107, 157, 0.15);
}

.site-search input {
  width: 150px;
  border: none;
  background: transparent;
  color: var(--text);
  font-size: 0.88rem;
  padding: 6px 0;
  outline: none;
}

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

.site-search button {
  padding: 7px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  background: var(--gradient-primary);
  border-radius: 999px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.site-search button:hover {
  transform: scale(1.04);
  box-shadow: 0 4px 14px rgba(255, 107, 157, 0.4);
}

#theme-toggle,
#menu-toggle {
  padding: 9px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-soft);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  white-space: nowrap;
  transition: all var(--transition);
}

#theme-toggle:hover,
#menu-toggle:hover {
  color: var(--primary-dark);
  border-color: var(--primary-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

#menu-toggle {
  display: none;
}

/* ============ MAIN LAYOUT ============ */
main {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

main > section {
  margin-bottom: 64px;
  animation: fadeUp 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
}

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

/* ============ BREADCRUMB ============ */
.breadcrumb {
  padding: 20px 0 4px;
}

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

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 6px;
}

.breadcrumb li + li::before {
  content: "/";
  color: var(--text-muted);
  opacity: 0.6;
}

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

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

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

/* ============ HEADINGS & TEXT ============ */
h1 {
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  line-height: 1.28;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}

h2 {
  position: relative;
  font-size: clamp(1.35rem, 2.6vw, 1.85rem);
  line-height: 1.35;
  font-weight: 800;
  margin-bottom: 22px;
  padding-left: 18px;
  color: var(--text);
}

h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.18em;
  bottom: 0.18em;
  width: 6px;
  border-radius: 999px;
  background: var(--gradient-primary);
}

h3 {
  font-size: 1.12rem;
  font-weight: 700;
  line-height: 1.45;
  margin: 28px 0 12px;
  color: var(--text);
}

p {
  color: var(--text-soft);
  margin-bottom: 14px;
}

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

section > p:first-of-type {
  font-size: 1.02rem;
}

/* ============ HERO ============ */
.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
  padding: 48px 40px;
  margin-top: 20px;
  border-radius: var(--radius-lg);
  background: var(--gradient-hero);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

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

.hero::before {
  width: 320px;
  height: 320px;
  background: rgba(255, 107, 157, 0.35);
  top: -120px;
  right: -80px;
  animation: float 9s ease-in-out infinite;
}

.hero::after {
  width: 260px;
  height: 260px;
  background: rgba(107, 157, 255, 0.3);
  bottom: -120px;
  left: -60px;
  animation: float 11s ease-in-out infinite reverse;
}

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

.hero-text,
.hero-banner {
  position: relative;
  z-index: 1;
}

.hero-lead {
  font-size: 1.02rem;
  color: var(--text-soft);
  margin-bottom: 16px;
}

.hero-answer {
  padding: 16px 20px;
  border-radius: var(--radius);
  background: var(--glass);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

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

.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 13px 30px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: 999px;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn-primary {
  color: #fff;
  background: var(--gradient-primary);
  box-shadow: 0 8px 24px rgba(255, 107, 157, 0.4);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  color: #fff;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 14px 32px rgba(255, 107, 157, 0.5);
}

.btn-secondary {
  color: var(--primary-dark);
  background: var(--bg-alt);
  border: 2px solid var(--primary-light);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  color: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

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

.hero-stats > div {
  padding: 14px 10px;
  text-align: center;
  border-radius: var(--radius-sm);
  background: var(--glass);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.hero-stats > div:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.hero-stats dt {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.hero-stats dd {
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1.2;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ============ CAROUSEL ============ */
.carousel {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--card-bg);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow);
}

.slide {
  display: none;
  animation: slideFade 0.6s ease both;
}

.slide.active {
  display: block;
}

@keyframes slideFade {
  from {
    opacity: 0;
    transform: scale(1.03);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

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

.slide-caption {
  padding: 14px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-soft);
  text-align: center;
  margin: 0;
}

.carousel-controls {
  position: absolute;
  bottom: 54px;
  right: 14px;
  display: flex;
  gap: 8px;
}

.carousel-controls button {
  width: 34px;
  height: 34px;
  font-size: 0;
  border-radius: 50%;
  background: var(--glass);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
  position: relative;
  transition: background var(--transition), transform var(--transition);
}

.carousel-controls button::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  border-top: 2px solid var(--primary-dark);
  border-right: 2px solid var(--primary-dark);
}

.carousel-controls .prev::after {
  transform: translate(-30%, -50%) rotate(-135deg);
}

.carousel-controls .next::after {
  transform: translate(-70%, -50%) rotate(45deg);
}

.carousel-controls button:hover {
  background: var(--primary);
  transform: scale(1.1);
}

.carousel-controls button:hover::after {
  border-color: #fff;
}

/* ============ LISTS & CARDS ============ */
.team-list,
.advantage-list,
.contact-list,
.update-list,
.news-list,
.friend-links,
.sitemap-list {
  display: grid;
  gap: 12px;
}

.team-list li,
.advantage-list li,
.contact-list li,
.update-list li {
  position: relative;
  padding: 16px 20px 16px 48px;
  border-radius: var(--radius);
  background: var(--card-bg);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  color: var(--text-soft);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.team-list li::before,
.advantage-list li::before,
.update-list li::before {
  content: "✓";
  position: absolute;
  left: 18px;
  top: 16px;
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  font-size: 0.7rem;
  font-weight: 700;
  color: #fff;
  background: var(--gradient-primary);
  border-radius: 50%;
}

.contact-list li::before {
  content: "◆";
  position: absolute;
  left: 20px;
  top: 17px;
  font-size: 0.7rem;
  color: var(--primary);
}

.team-list li:hover,
.advantage-list li:hover,
.contact-list li:hover,
.update-list li:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow);
  border-color: var(--primary-light);
}

/* ============ CASES / TESTIMONIALS ============ */
#testimonials blockquote {
  position: relative;
  margin-bottom: 16px;
  padding: 24px 26px 20px 56px;
  border-radius: var(--radius);
  background: var(--card-bg);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

#testimonials blockquote::before {
  content: "\201C";
  position: absolute;
  left: 16px;
  top: 4px;
  font-size: 3.4rem;
  line-height: 1;
  font-family: Georgia, serif;
  color: var(--primary-light);
}

#testimonials blockquote:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

#testimonials blockquote p {
  font-size: 0.98rem;
  color: var(--text-soft);
  margin-bottom: 10px;
}

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

/* ============ NEWS ============ */
.news-list li {
  position: relative;
  padding: 22px 24px;
  border-radius: var(--radius);
  background: var(--card-bg);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.news-list li:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.news-list time {
  display: inline-block;
  padding: 3px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary-dark);
  background: var(--bg-soft);
  border-radius: 999px;
  margin-bottom: 10px;
}

.news-list h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

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

/* ============ ARTICLES ============ */
#articles article {
  position: relative;
  padding: 28px;
  margin-bottom: 20px;
  border-radius: var(--radius-lg);
  background: var(--card-bg);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

#articles article::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 5px;
  background: var(--gradient-accent);
  opacity: 0.85;
}

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

#articles article h3 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 1.15rem;
}

#articles article .meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

#articles article p {
  font-size: 0.95rem;
}

#articles article a {
  display: inline-block;
  margin-top: 6px;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary-dark);
  transition: transform var(--transition), color var(--transition);
}

#articles article a:hover {
  color: var(--primary);
  transform: translateX(4px);
}

/* ============ FAQ ============ */
#faq details {
  margin-bottom: 12px;
  border-radius: var(--radius);
  background: var(--card-bg);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
}

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

#faq summary {
  position: relative;
  padding: 18px 56px 18px 22px;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  transition: color var(--transition), background var(--transition);
}

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

#faq summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--primary-dark);
  background: var(--bg-soft);
  border-radius: 50%;
  transition: transform var(--transition), background var(--transition), color var(--transition);
}

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

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

#faq details p {
  padding: 0 22px 20px;
  margin: 0;
  font-size: 0.93rem;
  animation: fadeUp 0.4s ease both;
}

/* ============ HOWTO ============ */
#howto ol {
  counter-reset: step;
  display: grid;
  gap: 14px;
  margin: 16px 0 24px;
}

#howto ol > li {
  position: relative;
  counter-increment: step;
  padding: 18px 22px 18px 66px;
  border-radius: var(--radius);
  background: var(--card-bg);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  color: var(--text-soft);
  transition: transform var(--transition), box-shadow var(--transition);
}

#howto ol > li::before {
  content: counter(step);
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  font-size: 0.9rem;
  font-weight: 800;
  color: #fff;
  background: var(--gradient-primary);
  border-radius: 50%;
  box-shadow: 0 4px 12px rgba(255, 107, 157, 0.35);
}

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

#howto ul {
  display: grid;
  gap: 10px;
  margin: 12px 0 20px;
}

#howto ul li {
  position: relative;
  padding: 12px 18px 12px 42px;
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  font-size: 0.93rem;
  color: var(--text-soft);
  transition: transform var(--transition);
}

#howto ul li::before {
  content: "→";
  position: absolute;
  left: 18px;
  color: var(--primary);
  font-weight: 700;
}

#howto ul li:hover {
  transform: translateX(4px);
}

/* ============ CONTACT ============ */
#contact address {
  font-style: normal;
  margin-bottom: 24px;
}

#contact svg {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

/* ============ SITEMAP ============ */
.sitemap-list {
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
}

.sitemap-list > li {
  padding: 16px 20px;
  border-radius: var(--radius);
  background: var(--card-bg);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.sitemap-list > li:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.sitemap-list > li > a {
  font-weight: 700;
  color: var(--text);
}

.sitemap-list ul {
  margin-top: 10px;
  display: grid;
  gap: 6px;
}

.sitemap-list ul a {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.sitemap-list ul a:hover {
  color: var(--primary-dark);
  padding-left: 4px;
}

/* ============ FRIEND LINKS ============ */
.friend-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.friend-links a {
  display: inline-block;
  padding: 10px 22px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-soft);
  background: var(--card-bg);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.friend-links a:hover {
  color: #fff;
  background: var(--gradient-primary);
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(255, 107, 157, 0.35);
}

/* ============ LEGAL SECTIONS ============ */
#privacy,
#disclaimer,
#copyright,
#security {
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--card-bg);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

#privacy h2,
#disclaimer h2,
#copyright h2,
#security h2 {
  margin-top: 0;
}

/* ============ FOOTER ============ */
#site-footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 48px 24px 32px;
  margin-top: 40px;
}

.footer-inner {
  max-width: 1240px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 36px;
}

.footer-brand p:first-child {
  font-size: 1.05rem;
  color: var(--text);
  margin-bottom: 10px;
}

.footer-brand strong {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-size: 1.1rem;
}

.footer-brand p,
.footer-contact p,
.footer-links p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.footer-links a {
  color: var(--text-soft);
  font-weight: 500;
}

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

/* ============ BACK TO TOP ============ */
#back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;
  width: 52px;
  height: 52px;
  font-size: 0;
  border-radius: 50%;
  background: var(--gradient-primary);
  box-shadow: 0 8px 24px rgba(255, 107, 157, 0.45);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: all var(--transition);
}

#back-to-top::after {
  content: "";
  position: absolute;
  top: 55%;
  left: 50%;
  width: 10px;
  height: 10px;
  border-top: 2.5px solid #fff;
  border-right: 2.5px solid #fff;
  transform: translate(-50%, -50%) rotate(-45deg);
}

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

#back-to-top:hover {
  transform: translateY(-4px) scale(1.06);
  box-shadow: 0 14px 32px rgba(255, 107, 157, 0.55);
}

/* ============ SCROLL REVEAL (progressive) ============ */
@supports (animation-timeline: view()) {
  main > section {
    animation: fadeUp linear both;
    animation-timeline: view();
    animation-range: entry 0% cover 22%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1080px) {
  .main-nav a {
    padding: 8px 9px;
    font-size: 0.85rem;
  }

  .site-search input {
    width: 110px;
  }

  .hero {
    grid-template-columns: 1fr;
    padding: 36px 28px;
  }

  .hero-banner {
    max-width: 520px;
    margin: 0 auto;
    width: 100%;
  }
}

@media (max-width: 900px) {
  :root {
    --header-h: 64px;
  }

  .header-inner {
    padding: 0 16px;
    gap: 12px;
    flex-wrap: wrap;
    height: auto;
    min-height: var(--header-h);
  }

  #menu-toggle {
    display: inline-block;
  }

  .main-nav {
    order: 4;
    flex-basis: 100%;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition), opacity var(--transition);
    opacity: 0;
  }

  .main-nav.open {
    max-height: 640px;
    opacity: 1;
    padding-bottom: 14px;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 4px;
  }

  .main-nav a {
    padding: 11px 16px;
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
  }

  .header-tools {
    margin-left: auto;
  }

  .site-search {
    display: none;
  }

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

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  main {
    padding: 0 16px 60px;
  }

  main > section {
    margin-bottom: 48px;
  }

  .hero {
    padding: 28px 20px;
    border-radius: var(--radius);
    gap: 28px;
  }

  .hero-actions {
    flex-direction: column;
  }

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

  .hero-stats dd {
    font-size: 1.15rem;
  }

  h2 {
    padding-left: 14px;
  }

  h2::before {
    width: 5px;
  }

  #articles article {
    padding: 22px 20px;
  }

  #faq summary {
    padding: 16px 52px 16px 18px;
    font-size: 0.93rem;
  }

  #howto ol > li {
    padding: 16px 18px 16px 60px;
  }

  #privacy,
  #disclaimer,
  #copyright,
  #security {
    padding: 22px 18px;
  }

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

  #back-to-top {
    right: 16px;
    bottom: 16px;
    width: 46px;
    height: 46px;
  }

  .carousel-controls {
    bottom: 48px;
    right: 10px;
  }
}

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

  .brand-name {
    font-size: 1.1rem;
  }
}

/* ============ PRINT ============ */
@media print {
  #site-header,
  #back-to-top,
  .hero-banner,
  .carousel-controls {
    display: none !important;
  }

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

  main > section {
    animation: none;
    break-inside: avoid;
  }

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