@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

/* ===== 基础重置 ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --clr-red: #ff0000;
  --clr-purple: #8b00ff;
  --clr-dark: #261717;
  --clr-dark2: #1a0f0f;
  --clr-glass-bg: rgba(255, 255, 255, 0.08);
  --clr-glass-border: rgba(255, 255, 255, 0.15);
  --clr-glass-hover: rgba(255, 255, 255, 0.13);
  --clr-text: #f5e6e6;
  --clr-text-muted: #c4a0a0;
  --clr-text-dim: #8a6060;
  --radius-card: 18px;
  --radius-pill: 999px;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  --font-sans: 'IBM Plex Sans', system-ui, sans-serif;
  --nav-h: 64px;
  --transition: 0.2s ease;
}

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

body {
  background-color: var(--clr-dark);
  color: var(--clr-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  padding-bottom: calc(var(--nav-h) + 16px);
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, menu {
  list-style: none;
}

/* ===== 背景装饰 ===== */
.site-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
}

.bg-orb--red {
  width: 600px;
  height: 600px;
  background: var(--clr-red);
  top: -200px;
  left: -150px;
}

.bg-orb--purple {
  width: 500px;
  height: 500px;
  background: var(--clr-purple);
  bottom: -100px;
  right: -100px;
}

/* ===== 玻璃拟态基础 ===== */
.glass-panel {
  background: var(--clr-glass-bg);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border: 1px solid var(--clr-glass-border);
  border-radius: var(--radius-card);
}

.glass-card {
  background: var(--clr-glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--clr-glass-border);
  border-radius: var(--radius-card);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.glass-card:hover {
  background: var(--clr-glass-hover);
  transform: translateY(-3px);
  box-shadow: 0 0 24px rgba(255, 0, 0, 0.2), 0 0 48px rgba(139, 0, 255, 0.1);
}

/* ===== 底部固定导航 ===== */
.bottom-nav {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 32px);
  max-width: 900px;
  z-index: 1000;
  background: rgba(38, 23, 23, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--clr-glass-border);
  border-radius: var(--radius-pill);
  box-shadow: 0 0 32px rgba(255, 0, 0, 0.15), 0 0 64px rgba(139, 0, 255, 0.1);
}

.bottom-nav__inner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  min-height: var(--nav-h);
}

.brand-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.brand-icon img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.brand-mark {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 18px;
  color: var(--clr-red);
  background: rgba(255, 0, 0, 0.1);
  border: 1px solid rgba(255, 0, 0, 0.3);
  border-radius: 8px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-details {
  flex: 1;
  position: relative;
}

.nav-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  list-style: none;
  padding: 8px 16px;
  min-height: 40px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--clr-glass-border);
  background: var(--clr-glass-bg);
  color: var(--clr-text);
  font-size: 14px;
  font-family: var(--font-sans);
  user-select: none;
  transition: background var(--transition);
}

.nav-toggle::-webkit-details-marker { display: none; }

.nav-toggle:hover {
  background: var(--clr-glass-hover);
}

.nav-toggle__icon {
  font-size: 18px;
  line-height: 1;
}

.nav-menu {
  position: absolute;
  bottom: calc(100% + 12px);
  left: 0;
  right: 0;
  background: rgba(26, 15, 15, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--clr-glass-border);
  border-radius: var(--radius-card);
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  box-shadow: 0 0 40px rgba(255, 0, 0, 0.2);
}

.nav-details[open] .nav-menu {
  animation: menuIn 0.18s ease;
}

@keyframes menuIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.nav-pill {
  display: flex;
  align-items: center;
  padding: 10px 16px;
  min-height: 40px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--clr-text-muted);
  transition: background var(--transition), color var(--transition);
}

.nav-pill:hover {
  background: var(--clr-glass-bg);
  color: var(--clr-text);
}

.nav-pill--active {
  background: rgba(255, 0, 0, 0.12);
  color: var(--clr-red);
  border: 1px solid rgba(255, 0, 0, 0.25);
}

/* ===== CTA 按钮 ===== */
.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  min-height: 40px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-sans);
  white-space: nowrap;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  cursor: pointer;
  text-decoration: none;
}

.cta-btn--primary {
  background: linear-gradient(135deg, var(--clr-red), var(--clr-purple));
  color: #fff;
  box-shadow: 0 0 20px rgba(255, 0, 0, 0.3);
}

.cta-btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(255, 0, 0, 0.5), 0 0 64px rgba(139, 0, 255, 0.3);
}

.cta-btn--ghost {
  background: var(--clr-glass-bg);
  border: 1px solid var(--clr-glass-border);
  color: var(--clr-text);
}

.cta-btn--ghost:hover {
  background: var(--clr-glass-hover);
  border-color: rgba(255, 255, 255, 0.3);
}

.cta-btn--nav {
  background: linear-gradient(135deg, var(--clr-red), var(--clr-purple));
  color: #fff;
  font-size: 13px;
  padding: 8px 16px;
  flex-shrink: 0;
  box-shadow: 0 0 16px rgba(255, 0, 0, 0.25);
}

.cta-btn--nav:hover {
  box-shadow: 0 0 24px rgba(255, 0, 0, 0.4);
}

/* ===== main / article / section 基础 ===== */
main {
  position: relative;
  z-index: 1;
  padding: 24px 16px;
  max-width: 1200px;
  margin: 0 auto;
}

main > article {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ===== 通用标签/heading ===== */
.section-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-red);
  margin-bottom: 16px;
  padding: 4px 12px;
  background: rgba(255, 0, 0, 0.08);
  border: 1px solid rgba(255, 0, 0, 0.2);
  border-radius: var(--radius-pill);
  display: inline-block;
}

.section-heading {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 20px;
  line-height: 1.3;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--clr-purple);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.article-date {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--clr-text-dim);
  margin-bottom: 12px;
}

/* ===== 正文内容 ===== */
.content-section {
  padding: 28px 24px;
}

.page-content {
  font-size: 16px;
  line-height: 1.8;
  color: var(--clr-text);
}

.page-content h2 {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--clr-text);
  margin: 28px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 0, 0, 0.2);
}

.page-content h3 {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 600;
  color: var(--clr-text);
  margin: 20px 0 8px;
}

.page-content p {
  margin-bottom: 16px;
  color: var(--clr-text-muted);
}

.page-content ul, .page-content ol {
  margin: 12px 0 16px 24px;
  color: var(--clr-text-muted);
}

.page-content li {
  margin-bottom: 6px;
  list-style: disc;
}

.page-content a {
  color: var(--clr-red);
  text-decoration: underline;
  text-decoration-color: rgba(255, 0, 0, 0.4);
}

.page-content a:hover {
  text-decoration-color: var(--clr-red);
}

.page-content strong {
  color: var(--clr-text);
  font-weight: 600;
}

/* ===== 首页 Hero ===== */
.page-home main {
  padding: 0;
  max-width: none;
}

.page-home main > article {
  gap: 0;
}

.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 80px 24px calc(var(--nav-h) + 80px);
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-img {
  position: absolute;
  object-fit: cover;
  border-radius: 0;
}

.hero-img--a {
  width: 55%;
  height: 70%;
  top: 0;
  left: 0;
  opacity: 0.5;
  border-radius: 0 0 var(--radius-card) 0;
}

.hero-img--b {
  width: 45%;
  height: 65%;
  bottom: 60px;
  right: 0;
  opacity: 0.45;
  border-radius: var(--radius-card) 0 0 var(--radius-card);
}

.hero-bg-text {
  position: absolute;
  bottom: -20px;
  left: -10px;
  font-family: var(--font-mono);
  font-size: clamp(80px, 18vw, 200px);
  font-weight: 700;
  color: rgba(255, 0, 0, 0.04);
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
  line-height: 1;
}

.hero-copy {
  position: relative;
  z-index: 2;
  text-align: right;
  margin-left: auto;
  max-width: 560px;
  padding: 40px 32px;
  background: rgba(26, 15, 15, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--clr-glass-border);
  border-radius: var(--radius-card);
  box-shadow: 0 0 60px rgba(255, 0, 0, 0.1), 0 0 120px rgba(139, 0, 255, 0.08);
}

.hero-h1 {
  font-family: var(--font-mono);
  font-size: clamp(24px, 5vw, 48px);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #fff 0%, #ffaaaa 50%, #cc88ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 16px;
  line-height: 1.7;
  color: var(--clr-text-muted);
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

/* 首页 features section */
.features-section {
  position: relative;
  z-index: 1;
  padding: 48px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.feature-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.card-num {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: rgba(255, 0, 0, 0.2);
  line-height: 1;
}

.card-title {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
}

.card-title a {
  color: var(--clr-text);
  transition: color var(--transition);
}

.card-title a:hover {
  color: var(--clr-red);
}

.card-desc {
  font-size: 14px;
  color: var(--clr-text-muted);
  line-height: 1.6;
  flex: 1;
}

.card-cta {
  display: inline-flex;
  align-items: center;
  font-size: 13px;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--clr-red);
  padding: 6px 0;
  border-bottom: 1px solid rgba(255, 0, 0, 0.3);
  transition: border-color var(--transition);
  align-self: flex-start;
}

.card-cta:hover {
  border-color: var(--clr-red);
}

/* 首页 content section */
.page-home .content-section {
  max-width: 1200px;
  margin: 0 24px;
}

/* ===== Feature 页 ===== */
.breadcrumb {
  font-size: 13px;
  color: var(--clr-text-dim);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
  font-family: var(--font-mono);
}

.breadcrumb a {
  color: var(--clr-text-muted);
  transition: color var(--transition);
}

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

.feature-header-section {
  padding: 28px 24px;
}

.feature-header-inner {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.feature-header-copy {
  flex: 1;
}

.feature-h1 {
  font-family: var(--font-mono);
  font-size: clamp(22px, 4vw, 38px);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #fff 0%, #ffaaaa 60%, #cc88ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.feature-desc {
  font-size: 16px;
  color: var(--clr-text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.feature-header-media {
  flex-shrink: 0;
  width: 280px;
  overflow: hidden;
}

.feature-hero-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 12px;
}

/* 子页列表 */
.sub-pages-section {
  padding: 28px 24px;
}

.sub-page-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.sub-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sub-card-media {
  aspect-ratio: 16/9;
  overflow: hidden;
  border-radius: 12px 12px 0 0;
}

.sub-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.sub-card:hover .sub-card-img {
  transform: scale(1.04);
}

.sub-card-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.sub-card-title {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
}

.sub-card-title a {
  color: var(--clr-text);
  transition: color var(--transition);
}

.sub-card-title a:hover {
  color: var(--clr-red);
}

.sub-card-desc {
  font-size: 13px;
  color: var(--clr-text-muted);
  line-height: 1.6;
  flex: 1;
}

.sub-card-date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--clr-text-dim);
}

.feature-cta-section {
  padding: 32px 24px;
  text-align: center;
}

.feature-cta-text {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 20px;
  color: var(--clr-text);
}

.feature-cta-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== 定价页 ===== */
.pricing-hero {
  padding: 48px 32px;
  text-align: center;
}

.pricing-h1 {
  font-family: var(--font-mono);
  font-size: clamp(24px, 5vw, 42px);
  font-weight: 700;
  margin: 12px 0;
  background: linear-gradient(135deg, #fff, #ffaaaa, #cc88ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.pricing-sub {
  font-size: 16px;
  color: var(--clr-text-muted);
  max-width: 500px;
  margin: 0 auto;
}

.plans-section {
  padding: 8px 0;
}

.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.plan-card {
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
}

.plan-card--highlight {
  border-color: rgba(255, 0, 0, 0.4);
  box-shadow: 0 0 32px rgba(255, 0, 0, 0.15), 0 0 64px rgba(139, 0, 255, 0.1);
}

.plan-tag {
  position: absolute;
  top: -12px;
  right: 20px;
  background: linear-gradient(135deg, var(--clr-red), var(--clr-purple));
  color: #fff;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
}

.plan-name {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--clr-text);
}

.plan-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.plan-price__num {
  font-family: var(--font-mono);
  font-size: 48px;
  font-weight: 700;
  color: var(--clr-red);
  line-height: 1;
}

.plan-price__unit {
  font-size: 14px;
  color: var(--clr-text-muted);
}

.plan-desc {
  font-size: 14px;
  color: var(--clr-text-muted);
}

.plan-perks {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.plan-perk {
  font-size: 14px;
  color: var(--clr-text-muted);
  padding-left: 4px;
  list-style: none;
}

.pricing-faq {
  padding: 28px 24px;
  text-align: center;
}

.pricing-faq-links {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== FAQ 页 ===== */
.faq-header {
  padding: 40px 32px;
}

.faq-h1 {
  font-family: var(--font-mono);
  font-size: clamp(22px, 4vw, 36px);
  font-weight: 700;
  margin: 8px 0 12px;
  background: linear-gradient(135deg, #fff, #ffaaaa, #cc88ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.faq-sub {
  font-size: 16px;
  color: var(--clr-text-muted);
}

.faq-content {
  padding: 28px 24px;
}

.faq-nav-section {
  padding: 28px 24px;
}

.faq-nav-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ===== About 页 ===== */
.about-hero {
  padding: 40px 32px;
  display: flex;
  gap: 32px;
  align-items: center;
}

.about-hero-copy {
  flex: 1;
}

.about-h1 {
  font-family: var(--font-mono);
  font-size: clamp(22px, 4vw, 36px);
  font-weight: 700;
  margin: 8px 0 12px;
  background: linear-gradient(135deg, #fff, #ffaaaa, #cc88ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about-sub {
  font-size: 16px;
  color: var(--clr-text-muted);
}

.about-hero-media {
  flex-shrink: 0;
  width: 240px;
}

.about-hero-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: var(--radius-card);
}

.about-links {
  padding: 32px 24px;
}

.about-link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
}

.about-link-card {
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
  text-decoration: none;
}

.about-link-card__icon {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--clr-red);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 0, 0, 0.08);
  border: 1px solid rgba(255, 0, 0, 0.2);
  border-radius: 12px;
}

.about-link-card__label {
  font-size: 14px;
  color: var(--clr-text-muted);
}

/* ===== Privacy 页 ===== */
.privacy-header {
  padding: 40px 32px;
}

.privacy-h1 {
  font-family: var(--font-mono);
  font-size: clamp(22px, 4vw, 36px);
  font-weight: 700;
  margin: 8px 0 12px;
  background: linear-gradient(135deg, #fff, #ffaaaa, #cc88ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.privacy-sub {
  font-size: 16px;
  color: var(--clr-text-muted);
}

.privacy-body {
  padding: 28px 24px;
}

.privacy-nav {
  padding: 28px 24px;
}

.privacy-nav-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ===== Default 页 ===== */
.default-header {
  padding: 40px 32px;
}

.default-h1 {
  font-family: var(--font-mono);
  font-size: clamp(22px, 4vw, 36px);
  font-weight: 700;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #fff, #ffaaaa, #cc88ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.default-sub {
  font-size: 16px;
  color: var(--clr-text-muted);
}

.default-nav {
  padding: 24px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ===== 页脚 ===== */
.site-footer {
  position: relative;
  z-index: 1;
  padding: 0 16px 120px;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-cta {
  padding: 32px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-cta__text {
  font-size: 18px;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--clr-text);
  flex: 1;
  min-width: 200px;
}

.footer-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  padding: 24px;
  background: var(--clr-glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--clr-glass-border);
  border-radius: var(--radius-card);
}

.footer-brand__name {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--clr-red);
  margin-bottom: 8px;
}

.footer-brand__desc {
  font-size: 14px;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-end;
}

.footer-links a {
  font-size: 14px;
  color: var(--clr-text-muted);
  padding: 4px 0;
  min-height: 28px;
  display: inline-flex;
  align-items: center;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--clr-red);
}

.footer-bar {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--clr-text-dim);
  padding: 12px;
}

/* ===== 动效 ===== */
@media (prefers-reduced-motion: no-preference) {
  .feature-grid li:nth-child(1) .glass-card { transition-delay: 0.03s; }
  .feature-grid li:nth-child(2) .glass-card { transition-delay: 0.06s; }
  .feature-grid li:nth-child(3) .glass-card { transition-delay: 0.09s; }
  .feature-grid li:nth-child(4) .glass-card { transition-delay: 0.12s; }
  .feature-grid li:nth-child(5) .glass-card { transition-delay: 0.15s; }
  .feature-grid li:nth-child(6) .glass-card { transition-delay: 0.18s; }

  .sub-page-list li:nth-child(1) .glass-card { transition-delay: 0.04s; }
  .sub-page-list li:nth-child(2) .glass-card { transition-delay: 0.08s; }
  .sub-page-list li:nth-child(3) .glass-card { transition-delay: 0.12s; }
}

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

/* ===== 移动端断点 ===== */
@media (max-width: 768px) {
  :root {
    --nav-h: 56px;
  }

  .hero-section {
    padding: 60px 16px calc(var(--nav-h) + 60px);
    align-items: flex-end;
  }

  .hero-copy {
    max-width: 100%;
    padding: 24px 20px;
    text-align: right;
  }

  .hero-img--a {
    width: 70%;
    height: 50%;
    opacity: 0.35;
  }

  .hero-img--b {
    width: 60%;
    height: 45%;
    opacity: 0.3;
  }

  .hero-actions {
    gap: 10px;
  }

  .feature-header-inner {
    flex-direction: column;
  }

  .feature-header-media {
    width: 100%;
  }

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

  .about-hero-media {
    width: 100%;
  }

  .footer-body {
    grid-template-columns: 1fr;
  }

  .footer-links {
    align-items: flex-start;
  }

  .footer-cta {
    flex-direction: column;
    text-align: center;
  }

  .footer-cta__text {
    text-align: center;
  }

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

  .bottom-nav {
    width: calc(100% - 24px);
    bottom: 12px;
  }

  .bottom-nav__inner {
    padding: 8px 12px;
  }

  .nav-toggle__text {
    display: none;
  }

  main {
    padding: 16px 12px;
  }

  .site-footer {
    padding: 0 12px 100px;
  }

  .content-section {
    padding: 20px 16px;
  }

  .page-home .content-section {
    margin: 0 12px;
  }

  .features-section {
    padding: 32px 12px;
  }

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

@media (max-width: 480px) {
  .hero-h1 {
    font-size: 22px;
  }

  .cta-btn {
    font-size: 13px;
    padding: 10px 16px;
  }

  .plan-price__num {
    font-size: 38px;
  }

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