/* ============================================
   万物鉴宝官网 - 暗金奢华主题
   与小程序 app.wxss 保持一致
   ============================================ */

/* --- CSS 变量（同步小程序主题） --- */
:root {
  /* 金色系 */
  --gold: #C9A227;
  --gold-light: #D4AF37;
  --gold-dark: #B8860B;
  --accent-gold: #F4D03F;

  /* 背景系 */
  --bg-dark: #1A1410;
  --bg-darker: #0D0A07;
  --bg-card: #2A2218;
  --bg-card-hover: #352B1F;
  --bg-input: #1F1A14;

  /* 文字系 */
  --text-gold: #E8D4A0;
  --text-white: #FFFFFF;
  --text-gray: #A89070;
  --text-hint: #966a39;

  /* 边框系 */
  --border-gold: #3D3426;
  --border-light: #4A3F2E;

  /* 功能色 */
  --success: #52C41A;
  --warning: #FAAD14;
  --error: #F5222D;

  /* 阴影 */
  --shadow-gold: 0 4px 24px rgba(201, 162, 39, 0.15);
  --shadow-dark: 0 8px 32px rgba(0, 0, 0, 0.4);

  /* 布局 */
  --max-width: 1100px;
  --header-height: 64px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
  color: var(--text-gold);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

a { color: var(--gold-light); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent-gold); }

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

/* --- Header / Navigation --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(26, 20, 16, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-gold);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  transition: background 0.3s;
}

.header.scrolled {
  background: rgba(26, 20, 16, 0.98);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gold);
  text-shadow: 0 2px 8px rgba(201, 162, 39, 0.3);
}

.header-brand .brand-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--bg-dark);
  font-weight: 900;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.header-nav a {
  color: var(--text-gray);
  font-size: 0.9rem;
  font-weight: 500;
  position: relative;
  transition: color 0.2s;
}

.header-nav a:hover,
.header-nav a.active {
  color: var(--gold);
}

.header-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gold);
  transition: width 0.25s;
}

.header-nav a:hover::after,
.header-nav a.active::after {
  width: 100%;
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--gold);
  border-radius: 2px;
  transition: all 0.3s;
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--header-height) + 60px) 24px 80px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 50% 30%, rgba(201, 162, 39, 0.06) 0%, transparent 60%);
  animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
  0% { transform: translate(0, 0); }
  100% { transform: translate(-3%, 3%); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border: 1px solid var(--border-gold);
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--text-gray);
  margin-bottom: 28px;
  background: rgba(42, 34, 24, 0.6);
}

.hero-badge .dot {
  width: 7px;
  height: 7px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.15;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
}

.hero-title .highlight {
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2.5vw, 1.35rem);
  color: var(--text-gray);
  margin-bottom: 20px;
  font-weight: 400;
  letter-spacing: 0.08em;
}

.hero-intro {
  font-size: clamp(0.95rem, 2vw, 1.05rem);
  color: var(--text-gray);
  max-width: 600px;
  margin: 0 auto 8px;
  line-height: 1.85;
  text-align: center;
}

.hero-intro strong {
  color: var(--gold-light);
  font-weight: 600;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.25s;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: var(--bg-dark);
  box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(201, 162, 39, 0.3);
  color: var(--bg-dark);
}

.btn-secondary {
  background: transparent;
  color: var(--gold);
  border: 1px solid var(--border-light);
}

.btn-secondary:hover {
  border-color: var(--gold);
  background: rgba(201, 162, 39, 0.08);
  color: var(--gold-light);
}

/* Hero QR Code */
.hero-qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
}

.hero-qr img {
  width: 180px;
  height: 180px;
  border-radius: 14px;
  border: 2px solid var(--border-gold);
  background: #fff;
  padding: 8px;
  box-shadow: var(--shadow-gold);
  transition: transform 0.3s, box-shadow 0.3s;
}

.hero-qr img:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 32px rgba(201, 162, 39, 0.25);
}

.qr-hint {
  font-size: 0.82rem;
  color: var(--text-hint);
}

/* Scroll indicator */
.scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--text-hint);
  font-size: 0.75rem;
  animation: bounce 2.5s infinite;
}

.scroll-hint .arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--text-hint);
  border-bottom: 2px solid var(--text-hint);
  transform: rotate(45deg);
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(8px); }
  60% { transform: translateX(-50%) translateY(4px); }
}

/* --- Features Section --- */
.features-section {
  padding: 90px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.4rem);
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 14px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-gray);
  max-width: 540px;
  margin: 0 auto;
}

/* --- Categories Section (鉴定品类) --- */
.categories-section {
  padding: 90px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.category-card {
  background: linear-gradient(145deg, var(--bg-card), rgba(42, 34, 24, 0.6));
  border: 1px solid var(--border-gold);
  border-radius: 14px;
  padding: 28px 24px;
  text-align: center;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.category-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-light);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-gold);
}

.category-card:hover::before {
  opacity: 1;
}

.category-icon {
  font-size: 2.4rem;
  display: block;
  margin-bottom: 14px;
}

.category-card h3 {
  font-size: 1.15rem;
  font-weight: 650;
  color: var(--text-white);
  margin-bottom: 8px;
}

.category-card p {
  font-size: 0.88rem;
  color: var(--text-gray);
  line-height: 1.65;
}

.categories-more {
  text-align: center;
  margin-top: 48px;
  padding-bottom: 8px;
}

.categories-more .btn-secondary {
  padding: 14px 44px;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  border-radius: 12px;
  border-color: var(--border-gold);
  background: rgba(201,162,39,0.04);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.feature-card {
  background: linear-gradient(145deg, var(--bg-card), rgba(42, 34, 24, 0.6));
  border: 1px solid var(--border-gold);
  border-radius: 14px;
  padding: 32px 26px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-light);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-gold);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
  display: block;
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 650;
  color: var(--text-white);
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-gray);
  line-height: 1.65;
}

/* --- Tech Advantages Section (技术优势) --- */
.tech-section {
  padding: 90px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.tech-card {
  background: linear-gradient(145deg, var(--bg-card), rgba(42, 34, 24, 0.5));
  border: 1px solid var(--border-gold);
  border-radius: 16px;
  padding: 32px 28px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

/* 让"社区共识飞轮"跨两列突出展示 */
.tech-card.featured {
  grid-column: 1 / -1;
  background: linear-gradient(145deg, rgba(201, 162, 39, 0.08), var(--bg-card), rgba(42, 34, 24, 0.5));
  border-color: rgba(201, 162, 39, 0.3);
}

.tech-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.tech-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-light);
  box-shadow: var(--shadow-gold);
}

.tech-card:hover::before {
  opacity: 1;
}

.tech-card-header {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 14px;
}

.tech-icon {
  font-size: 2rem;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(201, 162, 39, 0.1);
  border-radius: 11px;
  border: 1px solid rgba(201, 162, 39, 0.15);
}

.tech-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.3;
}

.tech-subtitle {
  font-size: 0.8rem;
  color: var(--text-hint);
  margin-top: 2px;
  font-weight: 500;
}

.tech-highlight {
  display: block;
  margin: 12px 0 16px;
  padding: 10px 14px;
  background: rgba(201, 162, 39, 0.06);
  border-left: 3px solid var(--gold);
  border-radius: 0 8px 8px 0;
  font-size: 0.9rem;
  color: var(--gold-light);
  font-weight: 500;
  line-height: 1.6;
}

.tech-points {
  list-style: none;
  margin-bottom: 18px;
}

.tech-points li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 8px;
  font-size: 0.88rem;
  color: var(--text-gray);
  line-height: 1.65;
}

.tech-points li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold-dark);
  border: 1.5px solid var(--gold);
}

.tech-metric {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(201, 162, 39, 0.08);
  border: 1px solid rgba(201, 162, 39, 0.2);
  border-radius: 8px;
}

.tech-metric .value {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--gold-light);
  font-variant-numeric: tabular-nums;
}

.tech-metric .label {
  font-size: 0.78rem;
  color: var(--text-hint);
}

/* --- Changelog Section --- */
.changelog-section {
  padding: 90px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.changelog-list {
  position: relative;
  padding-left: 28px;
}

.changelog-list::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), var(--border-gold), transparent);
}

.changelog-item {
  position: relative;
  margin-bottom: 36px;
  padding: 24px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: 12px;
  transition: all 0.25s;
}

.changelog-item::before {
  content: '';
  position: absolute;
  left: -23px;
  top: 30px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gold);
  border: 3px solid var(--bg-dark);
  box-shadow: 0 0 0 3px rgba(201, 162, 39, 0.2);
}

.changelog-item:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
}

/* Roadmap 分组与状态徽章（替代原日期） */
.roadmap-group {
  margin-bottom: 46px;
}
.roadmap-group:last-child {
  margin-bottom: 0;
}
.roadmap-group-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-white);
  margin: 4px 0 22px;
}
.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex: none;
}
.dot-live { background: #4CAF50; box-shadow: 0 0 0 4px rgba(76, 175, 80, .18); }
.dot-iter { background: #3DA5F4; box-shadow: 0 0 0 4px rgba(61, 165, 244, .18); }
.dot-plan { background: #9E9E9E; box-shadow: 0 0 0 4px rgba(158, 158, 158, .18); }

.status-badge {
  display: inline-block;
  padding: 3px 12px;
  font-size: 0.74rem;
  font-weight: 700;
  border-radius: 8px;
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}
.badge-live { background: rgba(76, 175, 80, .14); color: #7CD88A; border: 1px solid rgba(76, 175, 80, .3); }
.badge-iter { background: rgba(61, 165, 244, .14); color: #7CC4F7; border: 1px solid rgba(61, 165, 244, .3); }
.badge-plan { background: rgba(158, 158, 158, .14); color: #C2C2C2; border: 1px solid rgba(158, 158, 158, .3); }

/* 时间线圆点按状态着色 */
.roadmap-group.live .changelog-item::before { background: #4CAF50; box-shadow: 0 0 0 3px rgba(76, 175, 80, .2); }
.roadmap-group.iter .changelog-item::before { background: #3DA5F4; box-shadow: 0 0 0 3px rgba(61, 165, 244, .2); }
.roadmap-group.plan .changelog-item::before { background: #9E9E9E; box-shadow: 0 0 0 3px rgba(158, 158, 158, .2); }

.changelog-title {
  font-size: 1.12rem;
  font-weight: 650;
  color: var(--text-white);
  margin-bottom: 8px;
}

.changelog-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: 6px;
  background: rgba(201, 162, 39, 0.12);
  color: var(--gold-light);
  border: 1px solid rgba(201, 162, 39, 0.2);
}

.changelog-content {
  font-size: 0.92rem;
  color: var(--text-gray);
  line-height: 1.7;
  white-space: pre-line;
}

/* --- Contact / 合作联系 Section --- */
.contact-section {
  padding: 70px 24px 60px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.contact-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 40px;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: 16px;
  padding: 36px 28px;
  text-align: center;
  transition: all 0.3s ease;
}

.contact-card:hover {
  border-color: var(--gold);
  box-shadow: 0 0 30px rgba(201, 162, 39, 0.08);
  transform: translateY(-2px);
}

.contact-card-icon {
  font-size: 2.4rem;
  margin-bottom: 14px;
}

.contact-card h3 {
  font-size: 1.2rem;
  color: var(--text-gold);
  margin-bottom: 12px;
  font-weight: 600;
}

.contact-card > p {
  font-size: 0.92rem;
  color: var(--text-gray);
  line-height: 1.7;
  margin-bottom: 18px;
}

.contact-card ul {
  list-style: none;
  padding: 0;
  text-align: left;
  margin-top: 8px;
}

.contact-card ul li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.contact-card ul li::before {
  content: '✦';
  position: absolute;
  left: 0;
  color: var(--gold);
  font-size: 0.7rem;
  top: 3px;
}

.qr-wrapper {
  display: inline-block;
  padding: 12px;
  background: #fff;
  border-radius: 12px;
  border: 2px solid var(--border-gold);
  margin: 16px 0 8px;
}

.qr-wrapper img {
  display: block;
  width: 180px;
  height: 180px;
  object-fit: contain;
}

.qr-hint {
  font-size: 0.82rem !important;
  color: var(--text-hint) !important;
  margin-bottom: 0 !important;
}

/* --- Footer --- */
.footer {
  text-align: center;
  padding: 40px 24px;
  border-top: 1px solid var(--border-gold);
  color: var(--text-hint);
  font-size: 0.82rem;
}

.footer a {
  color: var(--text-gray);
}

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

.footer-brand {
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 6px;
}

.footer a.footer-brand {
  color: var(--gold);
  text-decoration: none;
}

.footer-beian {
  font-size: 0.82rem;
  color: var(--text-hint);
}

.footer-beian a {
  color: var(--text-gray);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.footer-beian a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 640px) {
  .header {
    padding: 0 16px;
  }

  .header-nav {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(26, 20, 16, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid var(--border-gold);
    gap: 16px;
  }

  .header-nav.open {
    display: flex;
  }

  .menu-toggle {
    display: flex;
  }

  .menu-toggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .menu-toggle.open span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero {
    min-height: auto;
    padding: calc(var(--header-height) + 48px) 20px 64px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .categories-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .category-card {
    padding: 22px 18px;
  }

  .feature-card {
    padding: 24px 20px;
  }

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

  .tech-card {
    padding: 24px 20px;
  }

  .tech-card.featured {
    grid-column: auto;
  }

  .changelog-item {
    padding: 18px 18px;
  }

  .changelog-list {
    padding-left: 22px;
  }

  .changelog-item::before {
    left: -19px;
    width: 10px;
    height: 10px;
  }

  .scroll-hint {
    display: none;
  }

  .contact-cards {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .contact-card {
    padding: 28px 22px;
  }

  .qr-wrapper img {
    width: 160px;
    height: 160px;
  }

  .features-section,
  .changelog-section {
    padding: 60px 20px;
  }
}

/* --- Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}