/* ============================================================
   墨典单词 官网样式 — iOS 26 Liquid Glass Design
   Primary: #64729C | Glassmorphism | Smooth Motion
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  --color-primary: #64729C;
  --color-primary-dark: #505C7E;
  --color-primary-light: #8494B8;
  --color-secondary: #9B8EC4;
  --color-accent: #5BA4CF;

  --color-bg: #F4F5F9;
  --color-bg-card: rgba(255, 255, 255, 0.65);
  --color-bg-section: rgba(100, 114, 156, 0.05);
  --color-text: #1e2235;
  --color-text-muted: #5a5f7a;
  --color-text-light: #8892b0;
  --color-border: rgba(100, 114, 156, 0.18);

  --gradient-hero: linear-gradient(135deg, #3d4b6a 0%, #64729C 55%, #7e8eb8 100%);
  --gradient-card: linear-gradient(135deg, rgba(255,255,255,0.8) 0%, rgba(244,245,249,0.6) 100%);

  --shadow-sm: 0 2px 8px rgba(100, 114, 156, 0.08);
  --shadow-md: 0 8px 24px rgba(100, 114, 156, 0.14);
  --shadow-lg: 0 16px 48px rgba(100, 114, 156, 0.18);

  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-full: 9999px;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1100px;

  --glass-bg: rgba(255, 255, 255, 0.62);
  --glass-border: rgba(255, 255, 255, 0.55);
  --glass-blur: blur(20px) saturate(160%);
}

/* ---------- Dark Mode ---------- */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0E1018;
    --color-bg-card: rgba(24, 28, 42, 0.72);
    --color-bg-section: rgba(100, 114, 156, 0.07);
    --color-text: #e8eaff;
    --color-text-muted: #9098c0;
    --color-text-light: #6670a0;
    --color-border: rgba(100, 114, 156, 0.22);
    --gradient-hero: linear-gradient(135deg, #1e2438 0%, #2e3858 55%, #3d4b6a 100%);
    --gradient-card: linear-gradient(135deg, rgba(30,36,56,0.8) 0%, rgba(24,28,42,0.6) 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.55);
    --glass-bg: rgba(24, 28, 42, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
  }
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  font-size: 16px;
  min-height: 100vh;
}

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

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

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4 {
  letter-spacing: -0.025em;
}

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

.section {
  padding: 72px 0;
}

.section-title {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 12px;
  color: var(--color-text);
}

.section-subtitle {
  font-size: 1rem;
  color: var(--color-text-muted);
  text-align: center;
  margin-bottom: 52px;
}

/* ---------- Navigation ---------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(244, 245, 249, 0.55);
  backdrop-filter: blur(24px) saturate(180%) contrast(105%);
  -webkit-backdrop-filter: blur(24px) saturate(180%) contrast(105%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.45);
  transition: background var(--transition);
}

@media (prefers-color-scheme: dark) {
  .site-nav {
    background: rgba(14, 16, 24, 0.55);
    border-bottom-color: rgba(255, 255, 255, 0.08);
  }
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.nav-logo {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo span {
  color: var(--color-text);
}

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

.nav-links a {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  transition: background var(--transition), color var(--transition);
}

.nav-links a:hover {
  background: rgba(100, 114, 156, 0.1);
  color: var(--color-primary);
}

.nav-cta {
  background: var(--color-primary) !important;
  color: #fff !important;
  padding: 8px 18px !important;
  border-radius: var(--radius-full);
  font-size: 0.85rem !important;
}

.nav-cta:hover {
  background: var(--color-primary-dark) !important;
  color: #fff !important;
}

/* Mobile nav */
.nav-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: var(--color-text);
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: rgba(244, 245, 249, 0.9);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: flex-start;
    padding: 12px 20px;
    gap: 4px;
    box-shadow: var(--shadow-md);
  }

  .nav-links a {
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    width: 100%;
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-menu-btn {
    display: block;
  }
}

@media (prefers-color-scheme: dark) and (max-width: 640px) {
  .nav-links {
    background: rgba(14, 16, 24, 0.9);
  }
}

/* ---------- Orb Animations ---------- */
@keyframes orb-float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(40px, -50px) scale(1.08); }
  66%       { transform: translate(-25px, 25px) scale(0.93); }
}

@keyframes orb-float-reverse {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(-35px, 45px) scale(1.06); }
  66%       { transform: translate(30px, -20px) scale(0.95); }
}

/* ---------- Hero Section ---------- */
.hero {
  background: var(--gradient-hero);
  color: #fff;
  padding: 88px 0 108px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  width: 640px;
  height: 640px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(155, 142, 196, 0.55) 0%, transparent 70%);
  top: -180px;
  right: -120px;
  animation: orb-float 22s ease-in-out infinite;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(91, 164, 207, 0.45) 0%, transparent 70%);
  bottom: -120px;
  left: -100px;
  animation: orb-float-reverse 28s ease-in-out infinite;
  pointer-events: none;
}

.hero-orb {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(100, 114, 156, 0.35) 0%, transparent 70%);
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: orb-float 35s ease-in-out infinite;
  pointer-events: none;
}

.hero-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 24px;
  letter-spacing: 0.04em;
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.hero-title {
  font-size: clamp(2.2rem, 8vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  font-size: clamp(1rem, 3vw, 1.25rem);
  opacity: 0.92;
  margin-bottom: 12px;
  font-weight: 500;
}

.hero-desc {
  font-size: 0.95rem;
  opacity: 0.78;
  margin-bottom: 44px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 30px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(12px) saturate(150%);
  -webkit-backdrop-filter: blur(12px) saturate(150%);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.35);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
}

.btn-download:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.26);
  border-color: rgba(255, 255, 255, 0.6);
  box-shadow: 0 8px 36px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.45);
  color: #fff;
}

.btn-download svg {
  flex-shrink: 0;
}

.hero-meta {
  font-size: 0.8rem;
  opacity: 0.6;
}

/* ---------- Features Section ---------- */
.features {
  background: var(--color-bg);
  position: relative;
  overflow: hidden;
}

.features::before {
  content: "";
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(100, 114, 156, 0.07) 0%, transparent 70%);
  top: -150px;
  left: -100px;
  pointer-events: none;
}

.features::after {
  content: "";
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(155, 142, 196, 0.05) 0%, transparent 70%);
  bottom: -80px;
  right: -80px;
  pointer-events: none;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  position: relative;
  z-index: 1;
}

.feature-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  box-shadow: 0 8px 32px rgba(100, 114, 156, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.6);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.4), transparent);
  pointer-events: none;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(100, 114, 156, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.7);
  border-color: rgba(255, 255, 255, 0.75);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 16px;
  box-shadow: 0 4px 12px rgba(100, 114, 156, 0.3);
}

.feature-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
}

.feature-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ---------- Flow Section ---------- */
.flow {
  background: var(--color-bg-section);
  position: relative;
  overflow: hidden;
}

.flow::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(100, 114, 156, 0.06) 0%, transparent 55%),
    radial-gradient(ellipse at 80% 30%, rgba(155, 142, 196, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.flow-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0;
  position: relative;
  z-index: 1;
}

.flow-step {
  text-align: center;
  padding: 32px 20px;
  position: relative;
}

.flow-step:not(:last-child)::after {
  content: "→";
  position: absolute;
  right: -14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.2rem;
  color: rgba(100, 114, 156, 0.4);
  z-index: 1;
}

@media (max-width: 640px) {
  .flow-step:not(:last-child)::after {
    content: "↓";
    right: auto;
    bottom: -16px;
    top: auto;
    left: 50%;
    transform: translateX(-50%);
  }

  .flow-steps {
    grid-template-columns: 1fr;
  }
}

.flow-number {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: rgba(100, 114, 156, 0.12);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(100, 114, 156, 0.2);
  color: var(--color-primary);
  font-size: 1.25rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: 0 4px 16px rgba(100, 114, 156, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.flow-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
}

.flow-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ---------- Audience Section ---------- */
.audience {
  background: var(--color-bg);
}

.audience-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.audience-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(100, 114, 156, 0.08);
  backdrop-filter: blur(8px) saturate(140%);
  -webkit-backdrop-filter: blur(8px) saturate(140%);
  border: 1px solid rgba(100, 114, 156, 0.15);
  border-radius: var(--radius-full);
  padding: 10px 20px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  box-shadow: 0 2px 8px rgba(100, 114, 156, 0.07), inset 0 1px 0 rgba(255, 255, 255, 0.5);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
}

.audience-tag:hover {
  transform: translateY(-3px);
  background: rgba(100, 114, 156, 0.15);
  box-shadow: 0 6px 20px rgba(100, 114, 156, 0.14);
  border-color: var(--color-primary-light);
  color: var(--color-primary);
}

/* ---------- Screenshots Section ---------- */
.screenshots {
  background: var(--color-bg-section);
  position: relative;
  overflow: hidden;
}

.screenshots::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 40%, rgba(100, 114, 156, 0.06) 0%, transparent 60%);
  pointer-events: none;
}

.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  position: relative;
  z-index: 1;
}

@media (max-width: 768px) {
  .screenshots-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .screenshots-grid {
    grid-template-columns: 1fr;
  }
}

/* Screenshot frame with phone-like appearance */
.screenshot-frame {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.screenshot-frame img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 40px rgba(100, 114, 156, 0.18);
  display: block;
  transition: transform var(--transition), box-shadow var(--transition);
}

.screenshot-frame img:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 20px 60px rgba(100, 114, 156, 0.25);
}

.screenshot-caption {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-align: center;
  font-weight: 500;
}

/* Keep old placeholder style for reference (not used) */
.screenshot-placeholder {
  aspect-ratio: 9/19.5;
  background: var(--glass-bg);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--color-text-light);
  font-size: 0.8rem;
  text-align: center;
  padding: 20px;
}

.screenshot-placeholder-icon {
  font-size: 2rem;
  opacity: 0.4;
}

/* ---------- CTA Section ---------- */
.cta-section {
  background: var(--gradient-hero);
  color: #fff;
  text-align: center;
  padding: 88px 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(91, 164, 207, 0.45) 0%, transparent 70%);
  top: -180px;
  left: -100px;
  animation: orb-float-reverse 24s ease-in-out infinite;
  pointer-events: none;
}

.cta-section::after {
  content: "";
  position: absolute;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(155, 142, 196, 0.4) 0%, transparent 70%);
  bottom: -140px;
  right: -80px;
  animation: orb-float 26s ease-in-out infinite;
  pointer-events: none;
}

.cta-section > .container {
  position: relative;
  z-index: 1;
}

.cta-title {
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-desc {
  font-size: 1rem;
  opacity: 0.85;
  margin-bottom: 40px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
}

/* ---------- Footer ---------- */
.site-footer {
  background: rgba(100, 114, 156, 0.03);
  border-top: 1px solid rgba(100, 114, 156, 0.12);
  padding: 48px 0 32px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand {
  flex: 1;
  min-width: 200px;
}

.footer-brand-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.footer-brand-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.footer-links-group {
  min-width: 120px;
}

.footer-links-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.footer-links-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links-list a {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

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

.footer-bottom {
  border-top: 1px solid rgba(100, 114, 156, 0.12);
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.footer-copyright {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

.footer-icp {
  font-size: 0.78rem;
  color: var(--color-text-light);
  margin-top: 4px;
}

.footer-icp a {
  color: var(--color-text-light);
  transition: color var(--transition);
}

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

/* ---------- Page Header (inner pages) ---------- */
.page-header {
  background: var(--gradient-hero);
  color: #fff;
  padding: 64px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: "";
  position: absolute;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(155, 142, 196, 0.5) 0%, transparent 70%);
  top: -150px;
  right: -80px;
  animation: orb-float 20s ease-in-out infinite;
  pointer-events: none;
}

.page-header > .container {
  position: relative;
  z-index: 1;
}

.page-header-title {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 12px;
}

.page-header-desc {
  font-size: 1rem;
  opacity: 0.85;
  max-width: 500px;
  margin: 0 auto;
}

/* ---------- Content Page ---------- */
.content-page {
  padding: 64px 0;
}

.content-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 44px;
  box-shadow: 0 8px 32px rgba(100, 114, 156, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.6);
  max-width: 780px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}

.content-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.4), transparent);
  pointer-events: none;
}

@media (max-width: 640px) {
  .content-card {
    padding: 24px 20px;
  }
}

.content-card h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 36px 0 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid rgba(132, 148, 184, 0.3);
}

.content-card h2:first-child {
  margin-top: 0;
}

.content-card p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 12px;
}

.content-card ul {
  list-style: disc;
  padding-left: 20px;
  margin-bottom: 12px;
}

.content-card ul li {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 6px;
  line-height: 1.7;
}

.content-card a {
  color: var(--color-primary);
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(100, 114, 156, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.55);
  position: relative;
}

.faq-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.3), transparent);
  pointer-events: none;
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: 20px 24px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--font-sans);
  transition: background var(--transition);
}

.faq-question:hover {
  background: rgba(100, 114, 156, 0.06);
}

.faq-question[aria-expanded="true"] {
  color: var(--color-primary);
}

.faq-chevron {
  flex-shrink: 0;
  transition: transform var(--transition);
  color: var(--color-text-muted);
}

.faq-question[aria-expanded="true"] .faq-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  padding: 0 24px 20px;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.faq-answer.is-open {
  display: block;
}

/* ---------- Support Form Hint ---------- */
.support-info-box {
  background: rgba(100, 114, 156, 0.07);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(100, 114, 156, 0.15);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
}

.support-info-box h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.support-info-box ul {
  list-style: none;
  padding: 0;
}

.support-info-box ul li {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  padding: 4px 0;
  padding-left: 20px;
  position: relative;
}

.support-info-box ul li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

/* ---------- Email Contact ---------- */
.contact-email {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(100, 114, 156, 0.08);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(100, 114, 156, 0.15);
  border-radius: var(--radius-full);
  padding: 10px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary);
  margin: 16px 0;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.contact-email:hover {
  transform: translateY(-2px);
  background: rgba(100, 114, 156, 0.14);
  box-shadow: var(--shadow-md);
  color: var(--color-primary-dark);
}

/* ---------- Responsive Helpers ---------- */
@media (max-width: 768px) {
  .section {
    padding: 52px 0;
  }

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

  .footer-top {
    flex-direction: column;
    gap: 24px;
  }
}

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

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