:root {
  --primary:        #2f6f9c;
  --primary-dark:   #234f71;
  --primary-light:  #6ea9c7;
  --primary-bg:     rgba(47,111,156,0.08);
  --primary-border: rgba(47,111,156,0.22);
  --accent:         #4a7e78;
  --accent-bg:      rgba(74,126,120,0.08);

  --bg-body:        #f3f7fb;
  --bg-card:        #fbfdff;
  --bg-card-alt:    #eaf0f6;
  --bg-header:      rgba(251,253,255,0.95);
  --bg-footer:      #162534;
  --bg-footer-alt:  #213547;

  --border:         #d6e0ea;
  --border-light:   #e6edf4;
  --border-primary: rgba(47,111,156,0.24);

  --text:           #182737;
  --text-secondary: #4e6276;
  --text-muted:     #8092a4;
  --text-light:     #b8c4cf;
  --text-white:     #f7fbff;

  --radius-sm:      5px;
  --radius:         7px;
  --radius-lg:      8px;
  --radius-xl:      10px;

  --shadow-sm:      0 1px 3px rgba(18,38,54,0.06);
  --shadow:         0 2px 6px rgba(18,38,54,0.05);
  --shadow-md:      0 6px 14px rgba(18,38,54,0.08);
  --shadow-lg:      0 12px 24px rgba(18,38,54,0.10);
  --shadow-primary: 0 6px 14px rgba(47,111,156,0.16);

  --ease:           cubic-bezier(0.22, 0.61, 0.36, 1);
  --duration:       0.26s;
  --transition:     0.26s cubic-bezier(0.22, 0.61, 0.36, 1);

  --font:           'PingFang SC','Microsoft YaHei','Hiragino Sans GB',-apple-system,BlinkMacSystemFont,sans-serif;
  --font-mono:      'SF Mono','Fira Code',monospace;

  --container:      1208px;
  --header-h:       68px;
  --gap:            20px;
  --section-py:     72px;
}

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

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

body {
  font-family: var(--font);
  background: var(--bg-body);
  color: var(--text);
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul, ol { list-style: none; }

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

input, textarea, select {
  font-family: inherit;
  outline: none;
}

::selection {
  background: rgba(74,126,120,0.18);
  color: var(--text);
}

::-webkit-scrollbar { width: 7px; height: 7px; }
::-webkit-scrollbar-track { background: var(--bg-card-alt); }
::-webkit-scrollbar-thumb { background: #a9b9c7; border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

h1 {
  font-size: clamp(2.3rem, 4.8vw, 4rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.04em;
  color: var(--text);
}
h2 {
  font-size: clamp(1.75rem, 3vw, 2.6rem);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -0.03em;
  color: var(--text);
}
h3 {
  font-size: clamp(1.12rem, 1.8vw, 1.38rem);
  font-weight: 600;
  line-height: 1.32;
  letter-spacing: -0.015em;
  color: var(--text);
}
h4 {
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text);
}
h5 {
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--text);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
p {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.72;
}

.gold { color: var(--primary); }
.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }

.section-title {
  margin-bottom: 40px;
}
.section-title h2 {
  margin-bottom: 10px;
}
.section-title h2 span { color: var(--primary); }
.section-title p {
  color: var(--text-secondary);
  max-width: 600px;
  font-size: 1rem;
}
.section-title .divider {
  width: 36px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
  margin-top: 14px;
  border-radius: 6px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gap);
}

.section {
  padding: var(--section-py) 0;
}
.section-dark  { background: #eef4f9; }
.section-card  { background: var(--bg-card); }
.section-card2 { background: var(--bg-card-alt); }

.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: var(--gap); }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--gap); }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: var(--gap); }

.grid-main-sidebar {
  display: grid;
  grid-template-columns: minmax(0,1fr) 320px;
  gap: 32px;
}

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-2 { gap: 10px; }
.gap-4 { gap: 20px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 22px;
  border-radius: var(--radius);
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  transition: all var(--transition);
  white-space: nowrap;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--primary);
  color: var(--text-white);
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: var(--text-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-primary);
}
.btn-outline {
  border: 1px solid var(--primary-border);
  color: var(--primary-dark);
  background: var(--bg-card);
}
.btn-outline:hover {
  background: var(--primary-bg);
  color: var(--primary-dark);
  border-color: var(--primary);
}
.btn-accent {
  background: var(--accent);
  color: var(--text-white);
}
.btn-accent:hover {
  background: #365f5a;
  color: var(--text-white);
  transform: translateY(-1px);
}
.btn-lg { padding: 14px 28px; font-size: 0.92rem; }
.btn-sm { padding: 8px 14px; font-size: 0.72rem; }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-primary);
}
.card-img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}
.card-body { padding: 18px; }
.card-title {
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.42;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-title a:hover { color: var(--primary-dark); }
.card-meta {
  display: flex;
  gap: 12px;
  font-size: 0.76rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}
.card-excerpt {
  font-size: 0.93rem;
  color: var(--text-secondary);
  line-height: 1.68;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-footer {
  padding: 12px 18px;
  border-top: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.post-item {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border-light);
}
.post-item:last-child { border-bottom: none; }
.post-item-thumb {
  width: 104px;
  height: 70px;
  object-fit: cover;
  border-radius: var(--radius);
  flex-shrink: 0;
}
.post-item-body { flex: 1; min-width: 0; }
.post-item-title {
  font-size: 0.96rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 7px;
}
.post-item-title a:hover { color: var(--primary-dark); }
.post-item-meta {
  font-size: 0.74rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.cat-label {
  display: inline-block;
  background: #dfeaf3;
  color: var(--primary-dark);
  font-size: 0.68rem;
  font-weight: 700;
  padding: 4px 9px;
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.cat-label-accent { background: #dcebe8; color: #365f5a; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-header);
  border-bottom: 1px solid var(--border);
  height: var(--header-h);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.site-logo img { height: 36px; width: auto; }
.site-logo-text {
  font-size: 1.22rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.02em;
}

.main-nav { display: flex; align-items: center; }
.main-nav ul { display: flex; align-items: center; gap: 6px; }
.main-nav a {
  display: block;
  padding: 8px 12px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: 6px;
  transition: all var(--transition);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.main-nav a:hover,
.main-nav a.active {
  color: var(--primary-dark);
  background: var(--primary-bg);
}
.main-nav .nav-cta {
  background: var(--primary);
  color: var(--text-white) !important;
  padding: 9px 16px;
  margin-left: 10px;
  border-radius: 6px;
}
.main-nav .nav-cta:hover {
  background: var(--primary-dark);
  color: var(--text-white) !important;
}

.header-search { position: relative; }
.header-search input {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 38px 10px 13px;
  border-radius: 6px;
  font-size: 0.82rem;
  width: 188px;
  transition: all var(--transition);
}
.header-search input:focus {
  border-color: var(--primary);
  width: 244px;
  background: #f8fbfe;
  box-shadow: 0 0 0 3px rgba(47,111,156,0.09);
}
.header-search input::placeholder { color: var(--text-muted); }
.header-search button {
  position: absolute;
  right: 11px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.88rem;
}
.header-search button:hover { color: var(--primary-dark); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 7px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}

.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(243,247,251,0.97);
  backdrop-filter: blur(14px);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-size: 1.16rem;
  font-weight: 600;
  color: var(--text);
  padding: 10px 26px;
  letter-spacing: 0.02em;
}
.mobile-nav a:hover { color: var(--primary-dark); }
.mobile-nav-close {
  position: absolute;
  top: 18px;
  right: 18px;
  font-size: 1.7rem;
  color: var(--text-muted);
  cursor: pointer;
}

.hero {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, #f5f9fd 0%, #edf4f9 52%, #e7eef5 100%);
}
.hero-bg {
  position: absolute;
  inset: 0;
  object-fit: cover;
  width: 100%;
  height: 100%;
  opacity: 0.09;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(251,253,255,0.88) 0%, rgba(234,240,246,0.72) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--primary-bg);
  border: 1px solid var(--border-primary);
  color: var(--primary-dark);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  margin-bottom: 22px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.hero h1 {
  margin-bottom: 18px;
}
.hero h1 span { color: var(--primary); }
.hero p,
.hero-subtitle {
  color: var(--text-secondary);
  font-size: 1.02rem;
  margin-bottom: 30px;
  max-width: 540px;
}
.hero-btns { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 42px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.hero-stat-num {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-dark);
  display: block;
  line-height: 1;
}
.hero-stat-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 6px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.hero::after {
  content: '';
  position: absolute;
  right: -120px;
  top: -120px;
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(110,169,199,0.16) 0%, rgba(110,169,199,0.05) 42%, transparent 72%);
  pointer-events: none;
}

.breadcrumb {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 11px 0;
}
.breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 7px;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.breadcrumb-list a { color: var(--primary-dark); }
.breadcrumb-list a:hover { text-decoration: underline; }
.breadcrumb-list .sep { color: #a9b9c7; margin: 0 3px; }
.breadcrumb-list .current { color: var(--text); font-weight: 600; }

.featured-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  grid-template-rows: auto auto;
  gap: var(--gap);
}
.featured-main {
  grid-row: 1 / 3;
}
.featured-main .card-img { aspect-ratio: 4/3; }
.featured-main .card-title { font-size: 1.28rem; }
.featured-main .card-excerpt { -webkit-line-clamp: 4; }

/* =============================================
   第十一部分：滚动新闻
   ============================================= */
.ticker-bar {
  background: #123a56;
  color: #f4f8fc;
  padding: 14px 0;
  overflow: hidden;
}
.ticker-inner { display: flex; align-items: center; gap: 24px; }
.ticker-label {
  font-size: 0.68rem;
  font-weight: 600;
  background: rgba(228, 240, 247, 0.14);
  padding: 6px 14px;
  border-radius: 6px;
  white-space: nowrap;
  flex-shrink: 0;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.ticker-track {
  display: flex;
  gap: 56px;
  animation: ticker 30s linear infinite;
  white-space: nowrap;
  font-size: 0.8rem;
  line-height: 1.5;
}
.ticker-track a {
  color: #eef5fa;
  transition: color 0.24s cubic-bezier(0.22, 1, 0.36, 1);
}
.ticker-track a:hover {
  color: #b9d8e8;
  text-decoration: underline;
  text-underline-offset: 3px;
}
@keyframes ticker {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* =============================================
   第十二部分：APP下载卡片
   ============================================= */
.app-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.app-card {
  background: #f9fcff;
  border: 1px solid #d7e4ec;
  border-radius: 8px;
  padding: 24px 18px 20px;
  box-shadow: 0 1px 3px rgba(18, 58, 86, 0.07);
  transition: border-color 0.26s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.26s cubic-bezier(0.22, 1, 0.36, 1), transform 0.26s cubic-bezier(0.22, 1, 0.36, 1);
  position: relative;
  overflow: hidden;
}
.app-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, #2f6f97 0%, #6ea5c3 100%);
  opacity: 0;
  transition: opacity 0.26s cubic-bezier(0.22, 1, 0.36, 1);
}
.app-card:hover::before { opacity: 1; }
.app-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 3px 10px rgba(18, 58, 86, 0.09);
  border-color: #a8c3d3;
}
.app-card img,
.app-card-icon img,
.app-icon-img {
  width: 64px;
  height: 64px;
  object-fit: contain;
  border-radius: 8px;
  margin-bottom: 18px;
}
.app-card h4 {
  font-size: 0.96rem;
  margin-bottom: 10px;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.app-card p {
  font-size: 0.84rem;
  color: #5d7384;
  line-height: 1.72;
}
.app-card .app-features {
  list-style: none;
  padding: 0;
  margin: 14px 0 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.app-card .app-features li {
  font-size: 0.79rem;
  color: #678091;
  line-height: 1.6;
}
.app-intro {
  margin-bottom: 28px;
  color: #607788;
  font-size: 0.94rem;
  line-height: 1.92;
}
.app-intro strong { color: #1d3140; font-weight: 600; }

/* =============================================
   第十三部分：关于我们
   ============================================= */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
.about-content h2 { margin-bottom: 18px; }
.about-content p {
  color: #607788;
  margin-bottom: 18px;
  line-height: 1.84;
  font-size: 0.96rem;
}
.about-features {
  margin: 24px 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.about-feature {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.about-feature-icon {
  width: 40px;
  height: 40px;
  background: #edf5f9;
  border: 1px solid #c5dbe7;
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
  color: #2f6f97;
}
.about-feature-text h4 {
  color: #204a66;
  font-size: 0.95rem;
  margin-bottom: 6px;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.about-feature-text p {
  font-size: 0.86rem;
  margin: 0;
  color: #647c8d;
  line-height: 1.75;
}
.about-img-wrap { position: relative; }
.about-img-wrap img {
  width: 100%;
  border-radius: 8px;
  border: 1px solid #d5e2ea;
  box-shadow: 0 1px 3px rgba(22, 53, 74, 0.08);
}
.about-img-badge {
  position: absolute;
  bottom: -18px;
  right: -10px;
  background: #1f5d84;
  color: #f5f9fc;
  font-weight: 700;
  font-size: 1.08rem;
  width: 92px;
  height: 92px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  line-height: 1.22;
  box-shadow: 0 6px 18px rgba(31, 93, 132, 0.16);
}

/* 关于页面 - 统计卡片 */
.stat-card {
  background: #fbfdff;
  border: 1px solid #d7e3eb;
  border-radius: 8px;
  padding: 24px 16px;
  text-align: center;
  transition: transform 0.24s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.24s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.24s cubic-bezier(0.22, 1, 0.36, 1);
}
.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 3px 10px rgba(18, 58, 86, 0.08);
  border-color: #b5cad8;
}
.stat-icon { font-size: 2rem; margin-bottom: 10px; }
.stat-icon-img { width: 40px; height: 40px; object-fit: contain; margin: 0 auto 10px; }
.stat-num {
  font-size: 1.84rem;
  font-weight: 700;
  color: #215f86;
  line-height: 1.14;
}
.stat-label {
  font-size: 0.82rem;
  color: #718797;
  margin-top: 6px;
  letter-spacing: 0.02em;
}
.stat-desc {
  font-size: 0.74rem;
  color: #8296a5;
  margin-top: 8px;
  opacity: 1;
  line-height: 1.6;
}

/* 里程碑时间线 */
.milestone-timeline {
  position: relative;
  max-width: 884px;
  margin: 32px auto 0;
  padding: 12px 0;
}
.milestone-timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, #2f6f97 0%, #76a9c2 100%);
  transform: translateX(-50%);
}
.milestone-item {
  position: relative;
  width: 50%;
  padding: 14px 30px;
}
.milestone-item.left { left: 0; text-align: right; }
.milestone-item.right { left: 50%; text-align: left; }
.milestone-year {
  position: absolute;
  top: 14px;
  width: 58px;
  height: 58px;
  background: #275f84;
  color: #f4f8fc;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.92rem;
  box-shadow: 0 5px 14px rgba(39, 95, 132, 0.14);
  z-index: 2;
}
.milestone-item.left .milestone-year { right: -29px; }
.milestone-item.right .milestone-year { left: -29px; }
.milestone-content {
  background: #fbfdff;
  border: 1px solid #d9e5ec;
  border-radius: 8px;
  padding: 16px 20px;
  box-shadow: 0 1px 3px rgba(18, 58, 86, 0.05);
}
.milestone-content h3 {
  margin: 0 0 8px;
  color: #214e6b;
  font-size: 1rem;
  font-weight: 600;
}
.milestone-content p {
  margin: 0;
  color: #6b8191;
  line-height: 1.72;
  font-size: 0.86rem;
}
.milestone-icon { margin-bottom: 10px; }
.milestone-icon-img { width: 24px; height: 24px; object-fit: contain; }

/* 页面横幅 */
.page-hero {
  background: linear-gradient(135deg, #183c58 0%, #295f85 58%, #3f7a9d 100%);
  color: #f5f9fc;
  padding: 48px 0 34px;
  text-align: center;
}
.page-hero h1 {
  font-size: 2rem;
  margin: 0 0 12px;
  color: #f7fbfe;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.page-hero p {
  font-size: 0.98rem;
  opacity: 0.92;
  color: #d9e8f1;
  margin: 0;
  line-height: 1.72;
}

/* =============================================
   第十四部分：FAQ
   ============================================= */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: #fbfdff;
  border: 1px solid #d7e3eb;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(18, 58, 86, 0.06);
  transition: border-color 0.24s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.24s cubic-bezier(0.22, 1, 0.36, 1);
}
.faq-item:hover,
.faq-item.open {
  border-color: #b5cad8;
  box-shadow: 0 3px 10px rgba(18, 58, 86, 0.08);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  color: #1d3140;
  user-select: none;
  transition: color 0.24s cubic-bezier(0.22, 1, 0.36, 1), background 0.24s cubic-bezier(0.22, 1, 0.36, 1);
  line-height: 1.55;
}
.faq-question:hover {
  color: #245f84;
  background: #f1f7fb;
}
.faq-question .faq-icon {
  width: 24px;
  height: 24px;
  border: 1px solid #bdd2df;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.82rem;
  color: #2c678f;
  flex-shrink: 0;
  transition: transform 0.24s cubic-bezier(0.22, 1, 0.36, 1), background 0.24s cubic-bezier(0.22, 1, 0.36, 1), color 0.24s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.24s cubic-bezier(0.22, 1, 0.36, 1);
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: #245f84;
  color: #f6fbfe;
  border-color: #245f84;
}
.faq-answer {
  display: none;
  padding: 0 24px 22px;
  color: #637a8b;
  font-size: 0.89rem;
  line-height: 1.86;
  border-top: 1px solid #e4edf3;
}
.faq-item.open .faq-answer { display: block; }

/* =============================================
   第十五部分：合作伙伴
   ============================================= */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  margin-bottom: 36px;
}
.partner-card {
  background: #fbfdff;
  border: 1px solid #d8e4ec;
  border-radius: 8px;
  padding: 24px 16px 20px;
  text-align: center;
  box-shadow: 0 1px 3px rgba(18, 58, 86, 0.06);
  transition: transform 0.26s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.26s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.26s cubic-bezier(0.22, 1, 0.36, 1);
}
.partner-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 3px 10px rgba(18, 58, 86, 0.09);
  border-color: #aec5d4;
}
.partner-icon {
  font-size: 2rem;
  margin-bottom: 14px;
  color: #2a668d;
  display: flex;
  align-items: center;
  justify-content: center;
}
.partner-name {
  font-weight: 600;
  font-size: 1rem;
  color: #224e6b;
  margin-bottom: 8px;
  letter-spacing: 0.01em;
}
.partner-desc {
  font-size: 0.82rem;
  color: #61798a;
  line-height: 1.76;
}
.partners-intro {
  margin-bottom: 28px;
  color: #607788;
  font-size: 0.94rem;
  line-height: 1.92;
}
.partners-intro strong { color: #1d3140; font-weight: 600; }

/* 信任徽章 */
.trust-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  border-top: 1px solid #dce7ee;
  padding-top: 24px;
}
.trust-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #f9fcff;
  border: 1px solid #d8e4ec;
  border-radius: 7px;
  padding: 9px 16px;
  font-size: 0.82rem;
  color: #62798a;
  box-shadow: 0 1px 2px rgba(18, 58, 86, 0.04);
}
.trust-badge-icon {
  display: inline-flex;
  align-items: center;
  line-height: 1;
  color: #2a668d;
}

/* =============================================
   第十六部分：侧边栏
   ============================================= */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.widget {
  background: #fbfdff;
  border: 1px solid #d7e3eb;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(18, 58, 86, 0.05);
}
.widget-header {
  padding: 16px 18px;
  border-bottom: 1px solid #e5edf3;
  display: flex;
  align-items: center;
  gap: 12px;
}
.widget-header h4 {
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: #213747;
}
.widget-header::before {
  content: '';
  display: block;
  width: 2px;
  height: 16px;
  background: #2c678f;
  border-radius: 2px;
}
.widget-body { padding: 18px 18px; }

/* 侧边栏搜索 */
.widget-search { display: flex; gap: 10px; }
.widget-search input {
  flex: 1;
  background: #f1f7fb;
  border: 1px solid #d4e2ea;
  color: #203443;
  padding: 11px 13px;
  border-radius: 7px;
  font-size: 0.86rem;
}
.widget-search input:focus {
  border-color: #89aec4;
  background: #fbfdff;
  box-shadow: 0 0 0 3px rgba(63, 122, 157, 0.10);
}
.widget-search button {
  background: #2a668d;
  color: #f5f9fc;
  padding: 11px 15px;
  border-radius: 7px;
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}

/* 分类列表 */
.cat-list { display: flex; flex-direction: column; }
.cat-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid #e5edf3;
  font-size: 0.86rem;
}
.cat-list-item:last-child { border-bottom: none; }
.cat-list-item a {
  color: #607788;
  transition: color 0.22s cubic-bezier(0.22, 1, 0.36, 1);
}
.cat-list-item a:hover { color: #2b678f; }
.cat-count {
  background: #eef5f9;
  color: #718796;
  font-size: 0.7rem;
  padding: 3px 9px;
  border-radius: 6px;
  border: 1px solid #d6e3eb;
}

/* 热门文章 */
.popular-item {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid #e5edf3;
}
.popular-item:last-child { border-bottom: none; }
.popular-rank {
  font-size: 1.18rem;
  font-weight: 700;
  color: #aabeca;
  width: 22px;
  flex-shrink: 0;
  line-height: 1;
  padding-top: 3px;
}
.popular-item:nth-child(1) .popular-rank { color: #2a668d; }
.popular-item:nth-child(2) .popular-rank { color: #5f91af; }
.popular-item:nth-child(3) .popular-rank { color: #7f9cad; }
.popular-img {
  width: 62px;
  height: 44px;
  object-fit: cover;
  border-radius: 6px;
  flex-shrink: 0;
}
.popular-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: #203443;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.6;
}
.popular-title a:hover { color: #2b678f; }

/* 标签云 */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.tag-item {
  background: #f1f7fb;
  border: 1px solid #d4e2ea;
  color: #62798a;
  font-size: 0.74rem;
  padding: 6px 11px;
  border-radius: 7px;
  transition: border-color 0.22s cubic-bezier(0.22, 1, 0.36, 1), color 0.22s cubic-bezier(0.22, 1, 0.36, 1), background 0.22s cubic-bezier(0.22, 1, 0.36, 1);
}
.tag-item:hover {
  border-color: #9ab8ca;
  color: #245f84;
  background: #edf5f9;
}

/* =============================================
   第十七部分：单篇文章
   ============================================= */
.post-hero {
  position: relative;
  height: 388px;
  overflow: hidden;
}
.post-hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.post-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(16, 39, 56, 0.78) 0%, rgba(20, 56, 79, 0.24) 58%, rgba(20, 56, 79, 0.02) 100%);
}
.post-hero-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 36px 34px;
  color: #f5f9fc;
}
.post-hero-content h1 { color: #f7fbfe; }

.post-header { padding: 34px 0 0; }
.post-title {
  font-size: clamp(1.44rem, 2.7vw, 2.16rem);
  margin-bottom: 14px;
  line-height: 1.24;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  color: #7a8f9e;
  font-size: 0.78rem;
  margin-bottom: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid #dbe6ed;
}
.post-meta span {
  display: flex;
  align-items: center;
  gap: 7px;
}

/* 文章内容 */
.post-content {
  color: #5f7788;
  font-size: 0.98rem;
  line-height: 1.9;
}
.post-content h2, .post-content h3, .post-content h4 {
  color: #1f3443;
  margin: 30px 0 14px;
  line-height: 1.34;
  font-weight: 600;
}
.post-content p { margin-bottom: 20px; }
.post-content img {
  border-radius: 8px;
  margin: 22px 0;
  border: 1px solid #d7e3eb;
}
.post-content a {
  color: #2a668d;
  text-decoration: underline;
  text-underline-offset: 4px;
}
.post-content blockquote {
  border-left: 2px solid #2a668d;
  padding: 18px 20px;
  background: #f3f8fb;
  border-radius: 0 8px 8px 0;
  margin: 26px 0;
  font-style: normal;
  color: #607788;
}
.post-content ul, .post-content ol {
  padding-left: 22px;
  margin: 20px 0;
  list-style: disc;
}
.post-content ol { list-style: decimal; }
.post-content li {
  margin-bottom: 10px;
  color: #61798a;
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.96rem;
  background: #f8fbfe;
}
.post-content th {
  background: #edf3f8;
  color: #1f4f78;
  padding: 12px 18px;
  text-align: left;
  border: 1px solid #d5e0ea;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.post-content td {
  padding: 12px 18px;
  border: 1px solid #d5e0ea;
  color: #526476;
  line-height: 1.6;
}

.post-tags {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 32px;
}
.post-tags-label {
  font-size: 0.78rem;
  color: #718397;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.share-bar {
  background: #f4f8fc;
  border: 1px solid #d7e2ec;
  border-radius: 7px;
  padding: 18px 22px;
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 32px 0;
  flex-wrap: wrap;
  box-shadow: 0 1px 3px rgba(20, 49, 79, 0.06);
}
.share-label {
  font-size: 0.8rem;
  color: #6f8295;
  font-weight: 600;
  margin-right: 6px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.share-btn {
  padding: 8px 18px;
  border-radius: 6px;
  font-size: 0.76rem;
  font-weight: 700;
  color: #f7fbff;
  display: inline-block;
  letter-spacing: 0.03em;
  transition: background-color 0.22s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.22s cubic-bezier(0.22, 1, 0.36, 1), transform 0.22s cubic-bezier(0.22, 1, 0.36, 1);
  box-shadow: 0 1px 3px rgba(17, 45, 72, 0.1);
}
.share-wechat  { background: #1f8b76; }
.share-weibo   { background: #5867c8; }
.share-twitter { background: #2a7db7; }
.share-copy {
  background: #fbfdff;
  border: 1px solid #cfdae5;
  color: #556779;
  cursor: pointer;
}
.share-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(17, 45, 72, 0.12);
  filter: saturate(1.05);
}

.related-posts { margin-top: 56px; }
.related-posts h3 {
  margin-bottom: 22px;
  font-size: 1.08rem;
  border-left: 2px solid #2b6ea3;
  padding-left: 14px;
  color: #173d5b;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.post-author {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.author-avatar-sm {
  width: 26px;
  height: 26px;
  border-radius: 6px;
  object-fit: cover;
}
.post-author a {
  color: #255f8b;
  font-weight: 600;
}
.post-author a:hover { text-decoration: none; color: #1b4b6f; }

.author-box {
  display: flex;
  gap: 20px;
  padding: 24px;
  margin: 40px 0;
  background: linear-gradient(180deg, #f6f9fc 0%, #eef4f8 100%);
  border-left: 2px solid #3a749d;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(22, 47, 73, 0.07);
}
.author-box-avatar {
  width: 76px;
  height: 76px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
}
.author-box-info { flex: 1; }
.author-box-name {
  margin: 0 0 8px;
  font-size: 1.12rem;
  color: #14364f;
  font-weight: 700;
}
.author-box-name a { color: #14364f; }
.author-box-name a:hover { color: #2f6f9b; }
.author-box-job {
  display: inline-block;
  margin-left: 10px;
  padding: 4px 10px;
  font-size: 0.7rem;
  font-weight: 600;
  color: #62778b;
  background: #e7eef5;
  border-radius: 5px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.author-box-bio {
  margin: 0;
  font-size: 0.92rem;
  color: #5c6f82;
  line-height: 1.72;
}

.post-nav { margin: 40px 0; }
.post-nav-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.post-nav-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 20px;
  background: #fbfdff;
  border: 1px solid #d8e3ed;
  border-radius: 8px;
  transition: border-color 0.24s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.24s cubic-bezier(0.22, 1, 0.36, 1), transform 0.24s cubic-bezier(0.22, 1, 0.36, 1), background-color 0.24s cubic-bezier(0.22, 1, 0.36, 1);
  box-shadow: 0 1px 3px rgba(21, 43, 68, 0.05);
}
.post-nav-item:not(.post-nav-disabled):hover {
  border-color: #8fb2cd;
  box-shadow: 0 3px 10px rgba(28, 58, 89, 0.08);
  transform: translateY(-1px);
  background: #f7fbfe;
}
.post-nav-next { text-align: right; }
.post-nav-label {
  font-size: 0.74rem;
  color: #7a8b9c;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.post-nav-title {
  font-size: 0.98rem;
  color: #20384d;
  font-weight: 600;
  line-height: 1.5;
}
.post-nav-disabled {
  opacity: 0.42;
  cursor: not-allowed;
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 56px;
}
.page-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 6px;
  font-size: 0.84rem;
  font-weight: 700;
  border: 1px solid #d4e0ea;
  color: #597083;
  background: #fdfefe;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 1px 2px rgba(16, 36, 60, 0.04);
}
.page-item:hover {
  border-color: #7ea8c7;
  color: #275f89;
  transform: translateY(-1px);
  box-shadow: 0 2px 5px rgba(16, 36, 60, 0.07);
}
.page-item.active {
  background: #2d658f;
  border-color: #2d658f;
  color: #f4f9fd;
}
.page-item.disabled { opacity: 0.36; pointer-events: none; }

.search-header {
  padding: 48px 0;
  border-bottom: 1px solid #d9e4ee;
  margin-bottom: 40px;
}
.search-form-large { display: flex; gap: 14px; max-width: 620px; }
.search-form-large input {
  flex: 1;
  background: #fbfdff;
  border: 1px solid #d1dde8;
  color: #21384c;
  padding: 15px 18px;
  border-radius: 7px;
  font-size: 0.98rem;
  box-shadow: inset 0 1px 2px rgba(23, 48, 73, 0.03);
}
.search-form-large input:focus {
  border-color: #6f9ebf;
  box-shadow: 0 0 0 3px rgba(61, 116, 157, 0.09);
}
.search-results-count {
  font-size: 0.86rem;
  color: #728497;
  margin-top: 14px;
}
.search-highlight { color: #275f89; font-weight: 700; }

.category-header {
  background: #f7fbfe;
  border-bottom: 1px solid #dae5ef;
  padding: 40px 0 28px;
  margin-bottom: 40px;
}
.category-header h1 {
  font-size: 2.18rem;
  line-height: 1.05;
  color: #17394f;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.category-header p {
  color: #708293;
  font-size: 0.98rem;
  margin-top: 10px;
  max-width: 560px;
  line-height: 1.78;
}
.sort-bar {
  display: flex;
  align-items: center;
  gap: 10px 16px;
  margin-bottom: 28px;
  padding-bottom: 18px;
  border-bottom: 1px solid #dbe6ef;
  flex-wrap: wrap;
}
.sort-bar-label {
  font-size: 0.76rem;
  color: #77889a;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.sort-btn {
  font-size: 0.77rem;
  padding: 7px 15px;
  border: 1px solid #d3dfe9;
  border-radius: 6px;
  color: #708394;
  background: #fbfdff;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 1px 2px rgba(22, 44, 68, 0.03);
}
.sort-btn:hover, .sort-btn.active {
  border-color: #88aac3;
  color: #255d86;
  background: #eef5fb;
}

.site-footer {
  background: #132534;
  color: #d9e6f1;
  position: relative;
}
.site-footer::before {
  content: '';
  display: block;
  height: 2px;
  background: linear-gradient(90deg, #244f73 0%, #5c86a7 52%, #244f73 100%);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1fr;
  gap: 40px;
  padding: 56px 0 42px;
  border-bottom: 1px solid rgba(186, 206, 223, 0.1);
}

.footer-brand .site-logo {
  margin-bottom: 14px;
  display: inline-flex;
}
.footer-brand .site-logo img {
  filter: brightness(0) invert(1);
  opacity: 0.84;
}
.footer-brand .site-logo-text {
  color: #f1f7fb;
  font-size: 1.22rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.footer-brand-text {
  color: #93a9bc;
  font-size: 0.9rem;
  margin: 16px 0 22px;
  line-height: 1.82;
}

.footer-contact-inline {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 22px;
  padding: 0;
  border: none;
}
.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.85rem;
  color: #98aebf;
  transition: color 0.22s ease, padding-left 0.22s ease;
}
.footer-contact-item:hover,
.footer-contact-item a:hover {
  color: #dceaf4;
  padding-left: 3px;
}
.footer-contact-item a {
  color: #98aebf;
  transition: color 0.22s ease;
}
.footer-contact-icon {
  font-size: 0.9rem;
  color: #7fa3c1;
  flex-shrink: 0;
  width: 20px;
  text-align: center;
}
.footer-contact-sep { display: none; }

.footer-social {
  display: flex;
  gap: 12px;
}
.social-btn {
  width: 38px;
  height: 38px;
  background: rgba(229, 239, 247, 0.04);
  border: 1px solid rgba(197, 215, 228, 0.12);
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.92rem;
  color: #9db1c3;
  transition: background-color 0.24s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.24s cubic-bezier(0.22, 1, 0.36, 1), color 0.24s cubic-bezier(0.22, 1, 0.36, 1), transform 0.24s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.24s cubic-bezier(0.22, 1, 0.36, 1);
}
.social-btn:hover {
  background: #274f72;
  border-color: #4d7597;
  color: #f3f8fc;
  transform: translateY(-1px);
  box-shadow: 0 3px 10px rgba(10, 23, 36, 0.24);
}

.footer-col h5 {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #eff6fb;
  margin-bottom: 22px;
  padding-bottom: 9px;
  border-bottom: 1px solid #3b607e;
  display: inline-block;
  text-transform: uppercase;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.footer-links a {
  font-size: 0.87rem;
  color: #96abbd;
  padding: 7px 0;
  display: flex;
  align-items: center;
  transition: color 0.22s ease, padding-left 0.22s ease;
  border-bottom: 1px solid rgba(210, 226, 237, 0.05);
}
.footer-links a:last-child { border-bottom: none; }
.footer-links a::before {
  content: '›';
  margin-right: 9px;
  color: rgba(188, 207, 221, 0.3);
  font-weight: 600;
  transition: color 0.22s ease, margin-right 0.22s ease;
}
.footer-links a:hover {
  color: #eef6fb;
  padding-left: 3px;
}
.footer-links a:hover::before {
  color: #82a7c4;
  margin-right: 11px;
}

.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-copyright-info p {
  font-size: 0.79rem;
  color: #73889b;
  margin: 0;
}
.footer-beian {
  margin-top: 7px;
  font-size: 0.75rem;
}
.footer-beian a {
  color: #73889b;
  transition: color 0.22s ease;
}
.footer-beian a:hover { color: #b7ccdd; }

.footer-legal {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}
.footer-legal a {
  font-size: 0.77rem;
  color: #778c9e;
  padding: 5px 13px;
  border: 1px solid rgba(196, 214, 227, 0.1);
  border-radius: 5px;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}
.footer-legal a:hover {
  color: #eef6fb;
  border-color: #52789a;
  background: rgba(96, 132, 162, 0.12);
}

.disclaimer-bar {
  background: rgba(7, 17, 25, 0.28);
  border-top: 1px solid rgba(197, 214, 227, 0.08);
  padding: 13px 0;
  text-align: center;
  font-size: 0.71rem;
  color: #627789;
  letter-spacing: 0.02em;
}

.page-404 {
  min-height: 78vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.error-code {
  font-size: 7.2rem;
  font-weight: 800;
  color: #3a6d95;
  line-height: 0.88;
  opacity: 0.14;
  letter-spacing: -0.04em;
}
.error-title {
  font-size: 1.92rem;
  margin-bottom: 14px;
  color: #1a3a52;
  font-weight: 700;
}
.error-msg {
  color: #738598;
  margin-bottom: 32px;
  font-size: 0.98rem;
  line-height: 1.7;
}

.content-box {
  background: #fbfdff;
  border: 1px solid #d9e4ee;
  border-radius: 8px;
  padding: 42px;
  box-shadow: 0 1px 3px rgba(24, 48, 74, 0.06);
}
.content-box h2 {
  font-size: 1.3rem;
  color: #215e88;
  margin: 30px 0 14px;
  padding-top: 22px;
  border-top: 1px solid #e4edf4;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.content-box h2:first-child { border-top: none; margin-top: 0; padding-top: 0; }
.content-box p { color: #5a6e81; margin-bottom: 18px; line-height: 1.9; }
.content-box ul { padding-left: 22px; list-style: disc; }
.content-box li { color: #5a6e81; margin-bottom: 10px; line-height: 1.8; }

.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group label {
  font-size: 0.79rem;
  font-weight: 700;
  color: #4f6478;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.form-group input,
.form-group textarea,
.form-group select {
  background: #f5f9fc;
  border: 1px solid #d5e1eb;
  color: #20394d;
  padding: 13px 15px;
  border-radius: 7px;
  font-size: 0.94rem;
  transition: border-color 0.22s ease, box-shadow 0.22s ease, background-color 0.22s ease;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: #78a0be;
  background: #fcfeff;
  box-shadow: 0 0 0 3px rgba(78, 120, 154, 0.1);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: #8192a3; }
.form-group textarea { min-height: 164px; resize: vertical; }
.form-notice { font-size: 0.74rem; color: #77899a; line-height: 1.6; }

.contact-info { display: flex; flex-direction: column; gap: 14px; }
.contact-info-item {
  display: flex;
  gap: 18px;
  padding: 22px;
  background: #f6f9fc;
  border: 1px solid #dae5ee;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(24, 47, 70, 0.05);
}
.contact-icon {
  width: 48px;
  height: 48px;
  background: #e8f1f8;
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.96rem;
  color: #2a658f;
  flex-shrink: 0;
}
.contact-info-item h5 {
  font-size: 0.79rem;
  color: #285d85;
  margin-bottom: 6px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.contact-info-item p {
  font-size: 0.92rem;
  color: #6f8194;
  margin: 0;
  line-height: 1.68;
}

.notice {
  padding: 16px 20px;
  border-radius: 6px;
  font-size: 0.84rem;
  border-left: 2px solid;
  margin-bottom: 22px;
  line-height: 1.72;
}
.notice-warning {
  background: #eef6f4;
  border-color: #4f8f7c;
  color: #35685a;
}
.notice-info {
  background: #edf5fb;
  border-color: #2f6892;
  color: #214c6c;
}

.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 46px;
  height: 46px;
  background: #275f89;
  color: #f5f9fc;
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.96rem;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(22, 51, 78, 0.16);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.24s ease, transform 0.24s ease, background-color 0.24s ease, box-shadow 0.24s ease;
  z-index: 500;
}
.back-to-top.visible { opacity: 1; pointer-events: auto; }
.back-to-top:hover {
  transform: translateY(-2px);
  background: #1d4c70;
  box-shadow: 0 6px 18px rgba(22, 51, 78, 0.2);
}

/* =============================================
   第二十六部分：CTA横幅
   ============================================= */
.cta-banner {
  background: linear-gradient(180deg, #f5f9fc 0%, #eef4f8 48%, #f8fbfd 100%);
  border-top: 1px solid #d5e0e8;
  border-bottom: 1px solid #d5e0e8;
  padding: 56px 0;
  position: relative;
  overflow: hidden;
  text-align: center;
}
.cta-banner::before {
  content: '';
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(62, 120, 164, 0.08) 0%, rgba(62, 120, 164, 0.03) 34%, transparent 72%);
  pointer-events: none;
}
.cta-banner > .container { position: relative; z-index: 2; }
.cta-badge { margin-bottom: 16px; }
.cta-title { margin-bottom: 12px; }
.cta-desc {
  color: #5d6d7c;
  margin: 0 auto 24px;
  max-width: 620px;
  line-height: 1.72;
  font-size: 0.98rem;
}
.cta-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* =============================================
   第二十七部分：特性/体育/步骤卡片
   ============================================= */
.feature-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-top: 32px;
}
.feature-mini-card {
  background: #fbfdff;
  border: 1px solid #d8e2ea;
  border-radius: 6px;
  padding: 20px;
  box-shadow: 0 1px 3px rgba(16, 34, 52, 0.06);
  transition: border-color 0.22s cubic-bezier(0.2, 0.7, 0.2, 1), box-shadow 0.22s cubic-bezier(0.2, 0.7, 0.2, 1), transform 0.22s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.feature-mini-card:hover {
  transform: translateY(-2px);
  border-color: #7fa7bf;
  box-shadow: 0 3px 10px rgba(19, 44, 66, 0.08);
}
.feature-mini-card .feature-icon {
  font-size: 1.55rem;
  margin-bottom: 12px;
  color: #356b92;
}

.sports-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.sport-card {
  background: #fcfeff;
  border-radius: 6px;
  padding: 22px;
  border: 1px solid #d8e2ea;
  box-shadow: 0 1px 3px rgba(16, 34, 52, 0.05);
  transition: border-color 0.24s cubic-bezier(0.2, 0.7, 0.2, 1), box-shadow 0.24s cubic-bezier(0.2, 0.7, 0.2, 1), transform 0.24s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.sport-card:hover {
  transform: translateY(-2px);
  border-color: #c0d3df;
  box-shadow: 0 4px 12px rgba(18, 40, 60, 0.07);
}
.sport-icon { font-size: 2rem; color: #356b92; }
.sport-icon-img { width: 68px; height: 68px; object-fit: contain; }
.sport-name { font-size: 1rem; font-weight: 600; margin: 14px 0 8px; letter-spacing: -0.01em; }
.sport-desc
 { font-size: 0.91rem; color: #617181; line-height: 1.68; }
.sport-meta {
  display: flex;
  justify-content: space-between;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid #e4ebf1;
  color: #7c8c99;
  font-size: 0.8rem;
}
.sport-count { font-size: 0.8rem; color: #7c8c99; }
.sport-link {
  font-size: 0.8rem;
  font-weight: 600;
  color: #356b92;
  transition: color 0.2s ease-out;
}
.sport-link:hover { color: #234f72; }

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 22px;
}
.step-card {
  position: relative;
  padding: 24px 20px;
  background: #fcfeff;
  border: 1px solid #d9e3eb;
  border-radius: 6px;
  text-align: center;
  box-shadow: 0 1px 3px rgba(17, 36, 54, 0.05);
}
.step-number {
  position: absolute;
  top: -10px; right: 12px;
  font-size: 2.15rem;
  font-weight: 700;
  color: #6f8fa8;
  opacity: 0.16;
  letter-spacing: -0.03em;
}
.step-icon { margin-bottom: 12px; }
.step-icon-img { width: 52px; height: 52px; object-fit: contain; margin: 0 auto; }
.lead-text {
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 18px;
  color: #5e6f7d;
}

/* 负责任内容 */
.responsible-content {
  max-width: 820px;
  color: #5f7080;
  font-size: 0.98rem;
  line-height: 1.82;
}
.responsible-content strong { color: #1f2f3d; font-weight: 600; }

/* 首页概览 */
.section-intro { background: #f9fcfe; }
.intro-wrap { display: flex; flex-direction: column; }
.intro-content {
  color: #61717f;
  font-size: 0.98rem;
  line-height: 1.82;
}
.intro-content strong { color: #21313f; font-weight: 600; }

/* 图标通用 */
.feature-icon-img { width: 48px; height: 48px; object-fit: contain; }
.about-icon-img { width: 40px; height: 40px; object-fit: contain; }
.partner-icon-img { width: 56px; height: 56px; object-fit: contain; margin: 0 auto; display: block; }
.badge-icon-img { width: 20px; height: 20px; object-fit: contain; vertical-align: middle; }

/* =============================================
   第二十八部分：用户评价
   ============================================= */
.testimonials-intro {
  max-width: 800px;
  margin: 0 auto 28px;
  text-align: center;
  color: #60707e;
  font-size: 0.98rem;
  line-height: 1.72;
}
.rating-overview {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 32px;
  background: #fcfeff;
  border: 1px solid #d7e1e9;
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 32px;
  align-items: center;
  box-shadow: 0 1px 3px rgba(15, 31, 48, 0.06);
}
.rating-score {
  text-align: center;
  border-right: 1px solid #dbe5ec;
  padding-right: 24px;
}
.rating-num { font-size: 3rem; font-weight: 700; color: #2e6f98; line-height: 0.95; }
.rating-stars { font-size: 1.12rem; color: #2e6f98; margin: 8px 0; letter-spacing: 1px; }
.rating-total { font-size: 0.82rem; color: #7b8a98; }
.rating-bars { display: flex; flex-direction: column; gap: 10px; }
.rating-bar-row {
  display: grid;
  grid-template-columns: 44px 1fr 44px;
  align-items: center;
  gap: 12px;
  font-size: 0.82rem;
  color: #61717f;
}
.rating-bar { height: 6px; background: #e8eff4; border-radius: 5px; overflow: hidden; }
.rating-fill {
  height: 100%;
  background: linear-gradient(90deg, #5b86a4 0%, #356b92 100%);
  border-radius: 5px;
  transition: width 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.rating-percent { text-align: right; font-weight: 600; }

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 22px;
}
.testimonial-card {
  background: #fcfeff;
  border: 1px solid #d8e2ea;
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 1px 3px rgba(16, 34, 52, 0.05);
  transition: border-color 0.24s cubic-bezier(0.2, 0.7, 0.2, 1), box-shadow 0.24s cubic-bezier(0.2, 0.7, 0.2, 1), transform 0.24s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.testimonial-card:hover {
  transform: translateY(-2px);
  border-color: rgba(53, 107, 146, 0.28);
  box-shadow: 0 4px 12px rgba(17, 38, 56, 0.07);
}
.testimonial-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.testimonial-avatar {
  width: 42px;
  height: 42px;
  border-radius: 6px;
  background: linear-gradient(135deg, #6b92af, #3c6f96);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  color: #f7fbfe;
  flex-shrink: 0;
}
.testimonial-user { flex: 1; }
.testimonial-name { font-weight: 600; font-size: 0.92rem; letter-spacing: -0.01em; }
.testimonial-region { font-size: 0.76rem; color: #7d8d9a; margin-top: 3px; }
.testimonial-rating { color: #3c7399; font-size: 0.9rem; letter-spacing: 0.5px; }
.testimonial-title { font-size: 0.98rem; color: #2d6288; margin: 0 0 10px; font-weight: 600; }
.testimonial-content { font-size: 0.9rem; line-height: 1.68; color: #627280; margin: 0 0 12px; }
.testimonial-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 12px;
  border-top: 1px dashed #d7e1e9;
}
.testimonial-tag {
  background: rgba(86, 128, 158, 0.1);
  color: #315f80;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
}
.testimonial-date { font-size: 0.76rem; color: #7c8c98; }

/* =============================================
   第二十九部分：作者页面
   ============================================= */
.author-hero {
  background: linear-gradient(180deg, #f4f8fb 0%, #eef4f8 54%, #f8fbfd 100%);
  border-bottom: 1px solid #d6e1e8;
  padding: 58px 0 48px;
  position: relative;
  overflow: hidden;
}
.author-hero::before {
  content: '';
  position: absolute;
  right: -90px;
  top: -110px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(61, 112, 149, 0.1) 0%, rgba(61, 112, 149, 0.03) 42%, transparent 72%);
  pointer-events: none;
}
.author-hero::after {
  content: '';
  position: absolute;
  left: -50px;
  bottom: -50px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(79, 137, 170, 0.08) 0%, transparent 70%);
  pointer-events: none;
}
.author-hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  align-items: center;
}

/* 头像 */
.author-avatar-wrap {
  position: relative;
  width: 200px;
  height: 200px;
}
.author-avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
  border: 2px solid #f8fbfd;
  box-shadow: 0 1px 3px rgba(18, 36, 53, 0.08);
}
.author-avatar-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #4c7ea0, #2b5e84);
  color: #f5f9fc;
  font-size: 4rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: 2px solid #f8fbfd;
  box-shadow: 0 1px 3px rgba(18, 36, 53, 0.08);
}
.author-verified-badge {
  position: absolute;
  bottom: 8px;
  right: 8px;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #4f8aa6, #326884);
  color: #f5f9fc;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.02rem;
  font-weight: 700;
  border: 2px solid #f8fbfd;
  box-shadow: 0 2px 6px rgba(35, 78, 109, 0.14);
}

/* 作者信息 */
.author-tag-row {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.author-job-tag {
  display: inline-block;
  background: #eef4f8;
  border: 1px solid #c8d7e2;
  color: #315f80;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 6px 11px;
  border-radius: 5px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.author-tag-verified {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(79, 138, 166, 0.1);
  border: 1px solid rgba(79, 138, 166, 0.25);
  color: #326884;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 6px 11px;
  border-radius: 5px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.author-tag-verified::before {
  content: '✓';
  font-size: 0.78rem;
}
.author-name {
  font-size: clamp(1.95rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: #1d2d3a;
  margin-bottom: 12px;
  letter-spacing: -0.025em;
  line-height: 1.08;
}
.author-bio {
  font-size: 0.98rem;
  color: #60707f;
  line-height: 1.76;
  margin-bottom: 24px;
  max-width: 660px;
}

/* 作者统计 */
.author-stats {
  display: flex;
  gap: 36px;
  margin-bottom: 24px;
  padding: 18px 0;
  border-top: 1px solid #d6e2ea;
  border-bottom: 1px solid #d6e2ea;
  flex-wrap: wrap;
}
.author-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.author-stat-num {
  font-size: 1.6rem;
  font-weight: 700;
  color: #315f80;
  line-height: 1;
}
.author-stat-label {
  font-size: 0.7rem;
  color: #7d8d9b;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* 作者社交 */
.author-social-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.author-social-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 14px;
  background: #fbfdff;
  border: 1px solid #d7e1e9;
  color: #5e6e7b;
  font-size: 0.77rem;
  font-weight: 600;
  border-radius: 6px;
  transition: border-color 0.22s ease-out, color 0.22s ease-out, background-color 0.22s ease-out, transform 0.22s ease-out, box-shadow 0.22s ease-out;
}
.author-social-link:hover {
  border-color: #86a9be;
  color: #315f80;
  background: #f1f6f9;
  transform: translateY(-1px);
  box-shadow: 0 1px 3px rgba(18, 36, 53, 0.07);
}
.author-social-icon { font-size: 0.88rem; }
.author-social-email:hover {
  border-color: #6f99b1;
  color: #2f607e;
  background: #edf4f8;
}
.author-articles { background: #f6fafc; }

/* =============================================
   第三十部分：APP页面
   ============================================= */
.app-hero {
  position: relative;
  padding: 76px 0 58px;
  overflow: hidden;
  background: linear-gradient(180deg, #f4f8fb 0%, #eef4f8 54%, #f8fbfd 100%);
  text-align: center;
}
.app-hero::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 46%;
  transform: translate(-50%, -50%);
  width: 560px;
  height: 560px;
  background: radial-gradient(circle, rgba(58, 108, 145, 0.08) 0%, rgba(58, 108, 145, 0.025) 36%, transparent 66%);
  pointer-events: none;
}
.app-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #edf4f8;
  border: 1px solid #c9d8e2;
  color: #315f80;
  padding: 7px 16px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.app-hero h1 { margin-bottom: 16px; }
.app-hero h1 span { color: #315f80; }
.app-hero-sub {
  color: #60717f;
  font-size: 1rem;
  max-width: 620px;
  margin: 0 auto 36px;
  line-height: 1.74;
}

/* 下载按钮 */
.dl-btns {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 42px;
}
.dl-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 24px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.84rem;
  transition: background-color 0.22s cubic-bezier(0.2, 0.7, 0.2, 1), border-color 0.22s cubic-bezier(0.2, 0.7, 0.2, 1), color 0.22s cubic-bezier(0.2, 0.7, 0.2, 1), transform 0.22s cubic-bezier(0.2, 0.7, 0.2, 1), box-shadow 0.22s cubic-bezier(0.2, 0.7, 0.2, 1);
  cursor: pointer;
}
.dl-btn-android {
  background: #315f80;
  color: #f7fbfe;
  border: 1px solid #315f80;
}
.dl-btn-android:hover {
  background: #264d69;
  color: #f7fbfe;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(36, 77, 105, 0.14);
}
.dl-btn-ios {
  background: #fbfdff;
  border: 1px solid #c8d8e3;
  color: #315f80;
}
.dl-btn-ios:hover {
  background: #eff5f9;
  border-color: #89aabd;
  transform: translateY(-2px);
  box-shadow: 0 2px 8px rgba(20, 43, 64, 0.06);
}
.dl-btn-icon { font-size: 1.3rem; line-height: 1; }
.dl-btn-text-wrap { text-align: left; }
.dl-btn-sub { font-size: 0.62rem; font-weight: 500; opacity: 0.74; display: block; letter-spacing: 0.03em; text-transform: uppercase; }
.dl-btn-main { font-size: 0.94rem; font-weight: 700; display: block; }

/* Hero统计 */
.app-hero-stats {
  display: flex;
  justify-content: center;
  gap: 42px;
  padding-top: 28px;
  border-top: 1px solid #d6e2ea;
  flex-wrap: wrap;
}
.app-hero-stat { text-align: center; }
.app-hero-stat-num {
  font-size: 1.55rem;
  font-weight: 700;
  color: #315f80;
  display: block;
}
.app-hero-stat-label {
  font-size: 0.7rem;
  color: #7d8d9a;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* 模型展示 */
.app-mockup-section {
  padding: 58px 0;
  background: #fbfdff;
  border-top: 1px solid #d7e1e9;
  border-bottom: 1px solid #d7e1e9;
}
.app-mockup-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 52px;
  align-items: center;
}
.app-mockup-text h2 { margin-bottom: 16px; }
.app-mockup-text h2 span { color: #315f80; }
.app-mockup-text p {
  color: #60707f;
  margin-bottom: 22px;
  line-height: 1.74;
  font-size: 0.97rem;
}
.app-features-list { display: flex; flex-direction: column; gap: 12px; }

.app-feature-row { display: flex; align-items: flex-start; gap: 18px; }
.app-feature-check {
  width: 20px;
  height: 20px;
  background: #eef4fb;
  border: 1px solid #c9d7e8;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.76rem;
  color: #2463a6;
  flex-shrink: 0;
  margin-top: 3px;
}
.app-feature-row p { font-size: 0.96rem; color: #5f7186; margin: 0; line-height: 1.68; }
.app-feature-row strong { color: #1c2b3a; font-weight: 600; }

/* 手机预览 */
.phone-visual { display: flex; justify-content: center; gap: 20px; }
.phone-frame {
  width: 172px;
  background: #f9fbfe;
  border: 1px solid #ccd8e6;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(28, 49, 76, 0.08);
  position: relative;
}
.phone-frame.large { width: 204px; }
.phone-notch {
  height: 22px;
  background: #eef3f8;
  display: flex;
  align-items: center;
  justify-content: center;
}
.phone-notch::after {
  content: '';
  width: 52px;
  height: 7px;
  background: #b9c7d8;
  border-radius: 5px;
}
.phone-screen {
  background: linear-gradient(158deg, #f7fbff 0%, #edf4fb 100%);
  padding: 14px;
  min-height: 296px;
}
.phone-screen-header {
  background: #2463a6;
  border-radius: 6px;
  height: 30px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  padding: 0 10px;
}
.phone-screen-header span {
  font-size: 0.56rem;
  font-weight: 700;
  color: #f7fbff;
  letter-spacing: 0.04em;
}
.phone-screen-card {
  background: #ffffff;
  border: 1px solid #d8e2ee;
  border-radius: 6px;
  height: 56px;
  margin-bottom: 10px;
  padding: 10px;
  display: flex;
  gap: 8px;
  align-items: center;
}
.phone-screen-img {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, #dde8f4, #c3d2e4);
  border-radius: 5px;
  flex-shrink: 0;
}
.phone-screen-lines { flex: 1; }
.phone-screen-line { height: 5px; border-radius: 3px; margin-bottom: 6px; }
.phone-screen-line.gold { background: rgba(36, 99, 166, 0.58); width: 68%; }
.phone-screen-line.gray { background: #c6d2e0; width: 48%; }
.phone-bottom {
  height: 18px;
  background: #eef3f8;
  display: flex;
  align-items: center;
  justify-content: center;
}
.phone-home-bar { width: 44px; height: 3px; background: #8fa2b8; border-radius: 4px; }

/* 二维码 */
.qr-section { padding: 72px 0; background: #f4f8fc; }
.qr-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.qr-card {
  background: #ffffff;
  border: 1px solid #d6e0ea;
  border-radius: 8px;
  padding: 28px 22px 24px;
  text-align: center;
  box-shadow: 0 1px 3px rgba(24, 44, 69, 0.06);
  transition: border-color 0.24s cubic-bezier(0.2, 0.7, 0.2, 1), box-shadow 0.24s cubic-bezier(0.2, 0.7, 0.2, 1), transform 0.24s cubic-bezier(0.2, 0.7, 0.2, 1);
  position: relative;
  overflow: hidden;
}
.qr-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, #2463a6, #3a8b93);
  opacity: 0;
  transition: opacity 0.24s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.qr-card:hover::before { opacity: 1; }
.qr-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 3px 10px rgba(24, 44, 69, 0.08);
  border-color: #b8cada;
}
.qr-icon { font-size: 2.1rem; margin-bottom: 14px; color: #2463a6; }
.qr-card h4 { color: #1f4f84; font-size: 1rem; margin-bottom: 10px; font-weight: 600; }
.qr-card p { font-size: 0.84rem; color: #607387; margin-bottom: 20px; line-height: 1.72; }
.qr-box {
  width: 116px;
  height: 116px;
  background: #fdfefe;
  border: 1px solid #d7e2ec;
  border-radius: 7px;
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.qr-btn {
  display: inline-block;
  padding: 9px 20px;
  background: #2463a6;
  color: #f7fbff;
  font-weight: 600;
  font-size: 0.8rem;
  border-radius: 6px;
  transition: background 0.22s ease, transform 0.22s ease, box-shadow 0.22s ease;
}
.qr-btn:hover {
  background: #1d4e83;
  color: #f7fbff;
  transform: translateY(-1px);
  box-shadow: 0 1px 3px rgba(29, 78, 131, 0.18);
}

/* 安装步骤 */
.install-section {
  padding: 72px 0;
  background: #ffffff;
  border-top: 1px solid #d8e2ec;
}
.install-tabs {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-bottom: 44px;
}
.install-tab {
  padding: 11px 24px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid #d2dde8;
  color: #6e7f91;
  cursor: pointer;
  transition: background 0.22s ease, color 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
  background: #f9fbfd;
  letter-spacing: 0.02em;
}
.install-tab.active,
.install-tab:hover {
  background: #2463a6;
  color: #f6fbff;
  border-color: #2463a6;
  box-shadow: 0 1px 3px rgba(36, 99, 166, 0.14);
}
.install-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.install-step { text-align: center; position: relative; }
.install-step:not(:last-child)::after {
  content: '→';
  position: absolute;
  right: -14px;
  top: 24px;
  color: #b4c2d1;
  font-size: 1.06rem;
}
.step-num {
  width: 56px;
  height: 56px;
  background: #eef4fb;
  border: 1px solid #c6d6e7;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.24rem;
  font-weight: 700;
  color: #2463a6;
  margin: 0 auto 16px;
}
.install-step h4 { font-size: 0.98rem; margin-bottom: 8px; color: #1f2f40; font-weight: 600; }
.install-step p { font-size: 0.84rem; color: #6b7c8f; line-height: 1.7; }

.app-faq { padding: 76px 0 64px; background: #f4f8fc; }

/* =============================================
   第三十一部分：认证页面（登录/注册）
   ============================================= */
.auth-page { min-height: 100vh; display: flex; flex-direction: column; }
.auth-main
 {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 480px;
  min-height: calc(100vh - var(--header-h));
}

/* 左侧品牌 */
.auth-left {
  background: linear-gradient(165deg, #f8fbff 0%, #eef4fa 48%, #e7eef6 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 72px 68px 84px;
}
.auth-left::before {
  content: '';
  position: absolute;
  left: -92px; top: -92px;
  width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(58, 139, 147, 0.1) 0%, transparent 67%);
  pointer-events: none;
}
.auth-left::after {
  content: '';
  position: absolute;
  right: -72px; bottom: -74px;
  width: 340px; height: 340px;
  background: radial-gradient(circle, rgba(76, 106, 168, 0.09) 0%, transparent 68%);
  pointer-events: none;
}
.auth-grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(34, 58, 84, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 58, 84, 0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
}
.auth-left-content { position: relative; z-index: 2; }
.auth-brand { display: flex; align-items: center; gap: 16px; margin-bottom: 44px; }
.auth-brand-logo {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #2463a6, #3a8b93);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.36rem;
  font-weight: 700;
  color: #f5fbff;
  box-shadow: 0 1px 3px rgba(28, 62, 106, 0.14);
}
.auth-brand-name {
  font-size: 1.32rem;
  font-weight: 700;
  color: #1f4f84;
  letter-spacing: 0.01em;
}
.auth-headline {
  font-size: clamp(2.2rem, 3.5vw, 3rem);
  font-weight: 700;
  color: #1e2d3c;
  line-height: 1.12;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
  max-width: 11.5ch;
}
.auth-headline span { color: #2463a6; }
.auth-sub {
  font-size: 1rem;
  color: #627487;
  line-height: 1.8;
  margin-bottom: 44px;
  max-width: 470px;
}

/* 特性列表 */
.auth-features { display: flex; flex-direction: column; gap: 20px; }
.auth-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #5f7185;
  font-size: 0.94rem;
}
.auth-feature-dot {
  width: 9px;
  height: 9px;
  background: #2463a6;
  border-radius: 3px;
  flex-shrink: 0;
  box-shadow: 0 1px 3px rgba(36, 99, 166, 0.14);
}

/* 权益列表 */
.auth-benefits { display: flex; flex-direction: column; gap: 18px; }
.auth-benefit { display: flex; align-items: flex-start; gap: 16px; }
.auth-benefit-icon {
  width: 38px;
  height: 38px;
  background: #edf4fb;
  border: 1px solid #cad9e7;
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.92rem;
  flex-shrink: 0;
  color: #2463a6;
}
.auth-benefit-text h5 {
  font-size: 0.9rem;
  color: #1f4f84;
  margin-bottom: 5px;
  font-weight: 600;
}
.auth-benefit-text p {
  font-size: 0.83rem;
  color: #6d7e90;
  margin: 0;
  line-height: 1.72;
}

/* 左面板底部装饰 */
.auth-left-deco { position: absolute; bottom: 36px; left: 68px; right: 68px; z-index: 2; }
.auth-deco-bar { height: 1px; background: linear-gradient(90deg, #2463a6, transparent); margin-bottom: 14px; }
.auth-deco-text { font-size: 0.7rem; color: #7f91a3; letter-spacing: 0.18em; text-transform: uppercase; }

/* 右侧表单 */
.auth-right {
  background: #ffffff;
  border-left: 1px solid #d8e3ec;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 56px 44px;
  overflow-y: auto;
}
.auth-form-wrap { width: 100%; max-width: 388px; }
.auth-form-wrap-wide { max-width: 424px; }
.auth-form-header { margin-bottom: 32px; }
.auth-form-header h2 {
  font-size: 1.72rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #1d2c3c;
  letter-spacing: -0.01em;
}
.auth-form-header p {
  font-size: 0.9rem;
  color: #738496;
  line-height: 1.72;
}

/* 表单字段 */
.auth-form { display: flex; flex-direction: column; gap: 18px; }
.auth-field { display: flex; flex-direction: column; gap: 8px; }
.auth-label {
  font-size: 0.77rem;
  font-weight: 600;
  color: #55687c;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.auth-input-wrap { position: relative; }
.auth-input {
  width: 100%;
  background: #f6f9fc;
  border: 1px solid #d4dee8;
  color: #1f2f40;
  padding: 13px 42px 13px 14px;
  border-radius: 6px;
  font-size: 0.94rem;
  transition: border-color 0.22s ease, background 0.22s ease, box-shadow 0.22s ease;
  font-family: var(--font);
}
.auth-input:focus {
  border-color: #2463a6;
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(36, 99, 166, 0.1);
}
.auth-input.valid  { border-color: #2f8f78; }
.auth-input.invalid { border-color: #5c74b8; }
.auth-input::placeholder { color: #90a0b2; }
.auth-input-icon {
  position: absolute;
  right: 13px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.96rem;
  color: #8a99ab;
  pointer-events: none;
}
.auth-input-toggle {
  position: absolute;
  right: 13px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: #8a99ab;
  font-size: 0.78rem;
  padding: 0;
  transition: color 0.2s ease;
}
.auth-input-toggle:hover { color: #2463a6; }
.auth-field-hint  { font-size: 0.73rem; color: #8192a3; }
.auth-field-error { font-size: 0.73rem; color: #5c74b8; display: none; }

/* 记住/忘记 */
.auth-row { display: flex; align-items: center; justify-content: space-between; }
.auth-checkbox-label {
  display: flex;
  align-items: center;
  gap: 9px;
  cursor: pointer;
  font-size: 0.81rem;
  color: #728396;
}
.auth-checkbox-label input[type="checkbox"] {
  width: 15px;
  height: 15px;
  accent-color: #2463a6;
  cursor: pointer;
}
.auth-forgot {
  font-size: 0.79rem;
  color: #2463a6;
  transition: opacity 0.2s ease;
}
.auth-forgot:hover { opacity: 0.72; }

/* 提交按钮 */
.auth-submit {
  width: 100%;
  padding: 13px;
  background: #2463a6;
  color: #f6fbff;
  font-weight: 600;
  font-size: 0.94rem;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: background 0.22s ease, transform 0.22s ease, box-shadow 0.22s ease;
  font-family: var(--font);
}
.auth-submit:hover {
  background: #1d4e83;
  transform: translateY(-1px);
  box-shadow: 0 1px 3px rgba(29, 78, 131, 0.16);
}
.auth-submit:active { transform: translateY(0); }

/* 分隔线 */
.auth-divider {
  display: flex;
  align-items: center;
  gap: 14px;
  color: #8798aa;
  font-size: 0.73rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.auth-divider::before,
.auth-divider::after { content: ''; flex: 1; height: 1px; background: #d7e1ea; }

/* 社交登录 */
.auth-social { display: flex; gap: 12px; }
.auth-social-btn {
  flex: 1;
  padding: 12px;
  background: #f6f9fc;
  border: 1px solid #d6e0ea;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  font-size: 0.79rem;
  font-weight: 600;
  color: #5e7084;
  cursor: pointer;
  transition: background 0.22s ease, color 0.22s ease, border-color 0.22s ease, transform 0.22s ease, box-shadow 0.22s ease;
  font-family: var(--font);
}
.auth-social-btn:hover {
  border-color: #bfcfdd;
  color: #2463a6;
  background: #edf4fb;
  transform: translateY(-1px);
  box-shadow: 0 1px 3px rgba(25, 49, 77, 0.06);
}

/* 切换链接 */
.auth-switch {
  text-align: center;
  font-size: 0.81rem;
  color: #79899b;
}

.auth-switch a {
  color: #2463a6;
  font-weight: 600;
}
.auth-switch a:hover { text-decoration: underline; }

/* 通知 */
.auth-notice { padding: 11px 15px; border-radius: 6px; font-size: 0.81rem; display: none; line-height: 1.68; }
.auth-notice.error  { background: rgba(92, 116, 184, 0.08); border: 1px solid rgba(92, 116, 184, 0.22); color: #4860a8; display: block; }
.auth-notice.success { background: rgba(47, 143, 120, 0.08); border: 1px solid rgba(47, 143, 120, 0.22); color: #2b7d69; display: block; }

/* =============================================
   第三十二部分：注册专属
   ============================================= */
.auth-main-signup { grid-template-columns: 1fr 540px; }

/* 进度步骤 */
.reg-steps { display: flex; align-items: center; margin-bottom: 32px; }
.reg-step { flex: 1; text-align: center; position: relative; }
.reg-step:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 14px; right: -50%;
  width: 100%; height: 1px;
  background: #d6e0ea;
  z-index: 0;
}
.reg-step.done:not(:last-child)::after,
.reg-step.active:not(:last-child)::after { background: #2463a6; }
.reg-step-circle {
  width: 30px;
  height: 30px;
  border-radius: 6px;
  background: #f5f9fc;
  border: 1px solid #d3dee8;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  color: #7f90a1;
  margin: 0 auto 8px;
  position: relative;
  z-index: 1;
  transition: background 0.22s ease, border-color 0.22s ease, color 0.22s ease, box-shadow 0.22s ease;
}
.reg-step.active .reg-step-circle { background: #2463a6; border-color: #2463a6; color: #f7fbff; }
.reg-step.done .reg-step-circle { background: #eaf4f6; border-color: #3a8b93; color: #2f6f76; }
.reg-step-label { font-size: 0.66rem; color: #8091a3; letter-spacing: 0.03em; text-transform: uppercase; }

.reg-step.active .reg-step-label { color: #2f5f8a; font-weight: 600; letter-spacing: 0.02em; }

/* 手机号 */
.phone-row { display: flex; gap: 16px; }
.phone-prefix {
  width: 96px;
  flex-shrink: 0;
  background: #f3f7fb;
  border: 1px solid #c9d6e3;
  color: #5d7287;
  padding: 16px 14px;
  border-radius: 6px;
  font-size: 0.94rem;
  font-family: var(--font);
  line-height: 1.35;
  transition: border-color 0.24s cubic-bezier(0.2, 0, 0.12, 1), box-shadow 0.24s cubic-bezier(0.2, 0, 0.12, 1), background-color 0.24s cubic-bezier(0.2, 0, 0.12, 1);
}
.phone-prefix:focus {
  border-color: #3d7ca6;
  box-shadow: 0 0 0 3px rgba(61,124,166,0.12);
  background: #f8fbfe;
}
.phone-row .auth-input-wrap { flex: 1; }

/* 验证码 */
.verify-row { display: flex; gap: 14px; }
.verify-row .auth-input-wrap { flex: 1; }
.verify-btn {
  white-space: nowrap;
  padding: 0 18px;
  background: #f4f8fc;
  border: 1px solid #c7d3df;
  border-radius: 7px;
  font-size: 0.81rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: #2e648f;
  cursor: pointer;
  transition: background-color 0.22s cubic-bezier(0.22, 0.61, 0.36, 1), border-color 0.22s cubic-bezier(0.22, 0.61, 0.36, 1), color 0.22s cubic-bezier(0.22, 0.61, 0.36, 1), box-shadow 0.22s cubic-bezier(0.22, 0.61, 0.36, 1);
  font-family: var(--font);
  box-shadow: 0 1px 3px rgba(34, 56, 82, 0.06);
}
.verify-btn:hover:not(:disabled) {
  border-color: #3f759c;
  background: #eaf2f8;
  color: #254f73;
  box-shadow: 0 1px 3px rgba(37, 79, 115, 0.1);
}
.verify-btn:disabled { opacity: 0.48; cursor: not-allowed; color: #90a1b2; }

/* 密码强度 */
.pwd-strength { margin-top: 10px; }
.pwd-strength-bar { display: flex; gap: 6px; margin-bottom: 6px; }
.pwd-strength-seg { flex: 1; height: 4px; background: #d7e0e8; border-radius: 6px; transition: background-color 0.2s ease-out; }
.pwd-strength-label { font-size: 0.72rem; color: #7b8e9f; line-height: 1.5; }

/* 协议 */
.auth-agree {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  font-size: 0.82rem;
  color: #708294;
  line-height: 1.82;
}
.auth-agree input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: #366f98;
  cursor: pointer;
  flex-shrink: 0;
  margin-top: 3px;
}
.auth-agree a { color: #2f638d; text-decoration: none; }
.auth-agree a:hover { text-decoration: underline; text-underline-offset: 2px; }

/* =============================================
   第三十三部分：动画
   ============================================= */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-up { animation: fadeUp 0.42s cubic-bezier(0.18, 0.82, 0.32, 1) forwards; }

@keyframes pulse-gold {
  0%, 100% { box-shadow: 0 0 0 0 rgba(74,124,168,0.22); }
  50%       { box-shadow: 0 0 0 8px rgba(74,124,168,0); }
}
.pulse { animation: pulse-gold 2.4s infinite; }

/* =============================================
   第三十四部分：全局响应式
   ============================================= */
@media (max-width: 1024px) {
  .grid-4          { grid-template-columns: repeat(2, 1fr); }
  .app-grid        { grid-template-columns: repeat(2, 1fr); }
  .partners-grid   { grid-template-columns: repeat(2, 1fr); }
  .footer-grid     { grid-template-columns: 1fr 1fr; gap: 26px; }
  .footer-brand    { grid-column: 1 / -1; }
  .footer-contact-inline { flex-direction: row; flex-wrap: wrap; gap: 10px 18px; }
  .grid-main-sidebar { grid-template-columns: 1fr; }
  .sidebar         { display: grid; grid-template-columns: 1fr 1fr; }
  .about-grid      { grid-template-columns: 1fr; gap: 34px; }
  .about-img-wrap  { max-width: 548px; }
  .author-hero-inner { grid-template-columns: 1fr; gap: 28px; text-align: center; }
  .author-avatar-wrap { margin: 0 auto; }
  .author-bio { margin-left: auto; margin-right: auto; }
  .author-stats { justify-content: center; gap: 28px; }
  .author-social-row { justify-content: center; }
  .author-tag-row { justify-content: center; }
}

@media (max-width: 900px) {
  .auth-main,
  .auth-main-signup { grid-template-columns: 1fr; }
  .auth-left { display: none; }
  .auth-right { border-left: none; min-height: calc(100vh - 64px); }
}

@media (max-width: 768px) {
  :root {
    --header-h: 64px;
    --section-py: 58px;
    --gap: 20px;
  }
  .section { padding: var(--section-py) 0; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .featured-grid { grid-template-columns: 1fr; }
  .featured-main { grid-row: auto; grid-column: auto; }
  .main-nav { display: none; }
  .hamburger { display: flex; }
  .header-search { display: none; }
  .hero { min-height: 500px; }
  .hero-stats { flex-wrap: wrap; gap: 18px; }
  .post-hero { height: 264px; }
  .post-hero-content { padding: 24px; }
  .sidebar { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 22px; padding: 32px 0 24px; }
  .footer-brand { grid-column: auto; text-align: center; }
  .footer-brand .site-logo { justify-content: center; }
  .footer-brand-text { max-width: 404px; margin-left: auto; margin-right: auto; }
  .footer-contact-inline { justify-content: center; }
  .footer-social { justify-content: center; }
  .footer-col h5 { display: block; text-align: center; border-bottom: none; padding-bottom: 0; margin-bottom: 10px; }
  .footer-col h5::after { content: ''; display: block; width: 24px; height: 2px; background: #3b6f96; margin: 8px auto 0; }
  .footer-links a { justify-content: center; }
  .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
  .footer-legal { justify-content: center; }
  .form-row { grid-template-columns: 1fr; }
  .app-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-btns { flex-direction: column; }
  .share-bar { flex-direction: column; align-items: flex-start; }
  .content-box { padding: 22px 20px; }
  .about-img-badge { width: 82px; height: 82px; font-size: 0.9rem; bottom: -10px; right: -10px; }
  .app-mockup-grid { grid-template-columns: 1fr; gap: 30px; }
  .qr-grid { grid-template-columns: 1fr; }
  .install-steps { grid-template-columns: repeat(2, 1fr); }
  .install-step:nth-child(2)::after { display: none; }
  .app-hero-stats { gap: 22px; }
  .phone-visual { gap: 16px; }
  .phone-frame { width: 138px; }
  .phone-frame.large { width: 164px; }
  .auth-right { padding: 36px 24px; }
  .post-nav-grid { grid-template-columns: 1fr; }
  .post-nav-next { text-align: left; }
  .author-hero { padding: 40px 0 34px; }
  .author-avatar-wrap { width: 156px; height: 156px; }
  .author-avatar-placeholder { font-size: 3rem; }
  .author-verified-badge { width: 32px; height: 32px; font-size: 0.95rem; }
  .author-stats { gap: 18px; padding: 18px 0; }
  .author-stat-num { font-size: 1.32rem; }
  .author-stat-label { font-size: 0.72rem; }
  .author-social-link { padding: 8px 12px; font-size: 0.76rem; }
  .author-social-text { display: none; }
  .author-box { flex-direction: column; text-align: center; }
  .author-box-avatar { margin: 0 auto; }
  .rating-overview { grid-template-columns: 1fr; gap: 18px; padding: 24px; }
  .rating-score { border-right: none; border-bottom: 1px solid #cfdae4; padding: 0 0 18px; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .milestone-timeline::before { left: 24px; }
  .milestone-item,
  .milestone-item.right { width: 100%; left: 0; padding-left: 60px; padding-right: 20px; text-align: left; }
  .milestone-item.left .milestone-year,
  .milestone-item.right .milestone-year { left: 0; right: auto; width: 52px; height: 52px; font-size: 0.84rem; }
}

@media (max-width: 480px) {
  .container { padding: 0 18px; }
  h1 { font-size: 1.86rem; }
  .app-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .app-card { padding: 20px 14px; }
  .error-code { font-size: 4.6rem; }
  .search-form-large { flex-direction: column; }
  .install-steps { grid-template-columns: 1fr; }
  .install-step::after { display: none !important; }
  .cta-banner { padding: 44px 0; }
  .cta-btns { flex-direction: column; align-items: stretch; max-width: 296px; margin: 0 auto; }
  .partners-grid { grid-template-columns: 1fr; }
}