/* 基础变量与重置 */
:root {
  --bg: #0b0f14;
  --bg-soft: #11161d;
  --text: #e6ebf2;
  --muted: #a4b0c0;
  --primary: #5b8cff;
  --primary-600: #4a79e6;
  --accent: #00d4ff;
  --success: #22c55e;
  --danger: #ef4444;
  --card: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.12);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Microsoft YaHei", "PingFang SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 头部 */
.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: saturate(180%) blur(8px);
  background: rgba(11, 15, 20, 0.6);
  border-bottom: 1px solid var(--border);
  z-index: 10001;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text);
}

.brand img {
  display: block;
  height: 24px;
  width: auto;
}

.nav {
  display: flex;
  gap: 16px;
  align-items: center;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 8px;
}

.nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.theme-toggle {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  border-radius: 10px;
  padding: 8px 10px;
  cursor: pointer;
}

/* 主视觉 */
.hero {
  padding: 64px 0;
  background: radial-gradient(1200px 400px at 20% -10%, rgba(91, 140, 255, 0.25), transparent), radial-gradient(800px 300px at 80% 0%, rgba(0, 212, 255, 0.18), transparent);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  align-items: center;
}

.hero h1 {
  font-size: 42px;
  margin: 0 0 12px;
}

.hero p {
  color: var(--muted);
  margin: 0 0 20px;
}

.cta {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  background: rgba(255, 255, 255, 0.04);
  cursor: pointer;
}

.btn:hover {
  background: rgba(255, 255, 255, 0.08);
}

.btn.primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border: none;
  color: #0b0f14;
  font-weight: 600;
}

.btn.ghost {
  background: transparent;
}

.badges {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.badge {
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--muted);
  font-size: 12px;
  border: 1px solid var(--border);
}

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-glass {
  border-radius: 20px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
  box-shadow: var(--shadow);
  padding: 20px;
}

.card-glass img {
  width: 100%;
  max-width: 360px;
  filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.45));
}

/* 平台卡片 */
.platforms {
  padding: 40px 0;
}

.platforms h2 {
  margin-bottom: 16px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.platform-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  background: var(--card);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.platform-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.35);
  border-color: rgba(255, 255, 255, 0.25);
}

.platform-card .icon {
  font-size: 28px;
}

.platform-card .icon img {
  width: 28px;
  height: 28px;
  display: inline-block;
  filter: none;
}

.platform-card h3 {
  margin: 10px 0 6px;
}

.platform-card p {
  color: var(--muted);
  margin: 0 0 12px;
}

.platforms .tip {
  color: var(--muted);
  margin-top: 10px;
}

/* 特性区域 */
.features {
  padding: 40px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.feature-item {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  background: var(--card);
}

.feature-item h3 {
  margin: 0 0 8px;
}

.feature-item p {
  color: var(--muted);
  margin: 0;
}

/* 信任与安全 */
.trust {
  padding: 40px 0;
}

.trust-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.trust-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  background: var(--card);
}

.trust-card .hash {
  margin-top: 8px;
}

.trust-card .label {
  color: var(--muted);
  margin-right: 6px;
}

.trust-card code {
  background: rgba(255, 255, 255, 0.08);
  padding: 4px 6px;
  border-radius: 6px;
  border: 1px solid var(--border);
}

/* 页脚 */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  color: var(--muted);
  background: var(--bg-soft);
}

/* 固定底部下载条 */
.fixed-bar {
  position: fixed;
  left: 10px;
  right: 10px;
  bottom: 12px;
  background: #ffffff;
  color: #000;
  height: 60px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  z-index: 9999;
}

.fixed-bar .bar-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.fixed-bar .bar-logo {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.fixed-bar .bar-logo img {
  width: 24px;
  height: 24px;
  object-fit: contain;
  filter: invert(1);
}

.fixed-bar .bar-info h4 {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  color: #000;
  line-height: 1.2;
}

.fixed-bar .bar-info p {
  margin: 0;
  font-size: 10px;
  color: #666;
}

.fixed-bar .bar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.fixed-bar .btn-reg {
  background: #000;
  color: #fff;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
}

.fixed-bar .btn-down {
  background: #fff;
  color: #000;
  border: 1px solid #000;
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
}

.fixed-bar .bar-close {
  position: absolute;
  right: 6px;
  top: 4px;
  color: #bbb;
  font-size: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
}

/* 使用步骤 */
.steps {
  padding: 40px 0;
}

.steps-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.step-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  background: var(--card);
  height: 100%;
}

.step-card h3 {
  margin: 0 0 8px;
}

.step-card p {
  color: var(--muted);
  margin: 0;
}

/* FAQ */
.faq {
  padding: 40px 0;
}

.faq-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  background: var(--card);
}

.faq-item h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.faq-item p {
  color: var(--muted);
  margin: 0;
}

/* 用户评价 */
.testimonials {
  padding: 40px 0;
}

.testimonials-grid {
  grid-template-columns: repeat(3, 1fr);
}

.testimonial-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  background: var(--card);
}

.testimonial-card .author {
  color: var(--muted);
  margin-top: 8px;
}

/* 画廊 */
.gallery {
  padding: 40px 0;
}

.gallery-grid {
  grid-template-columns: repeat(4, 1fr);
}

.gallery-item {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 12px;
  background: var(--card);
  text-align: center;
}

.gallery-item img {
  width: 100%;
  max-width: 220px;
  border-radius: 10px;
}

.gallery-item figcaption {
  color: var(--muted);
  margin-top: 6px;
}

/* 底部 CTA */
.bottom-cta {
  padding: 48px 0 120px;
  border-bottom: 1px solid var(--border);
}

.bottom-cta-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: center;
}

.bottom-cta-actions {
  display: flex;
  gap: 12px;
}

/* 对比表格 */
.compare {
  padding: 40px 0;
}

.compare-grid {
  grid-template-columns: repeat(3, 1fr);
}

.compare-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  background: var(--card);
}

.compare-card h3 {
  margin: 0 0 8px;
}

.compare-card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

/* 左右交错 */
.zigzag {
  padding: 40px 0;
}

.zigzag-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: center;
  margin-bottom: 20px;
}

.zigzag-media img {
  width: 100%;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--card);
}

.zigzag-text h3 {
  margin: 0 0 8px;
}

.zigzag-text p {
  color: var(--muted);
  margin: 0;
}

/* 时间线 */
.timeline {
  padding: 40px 0;
}

.timeline-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-left: 2px solid var(--border);
}

.timeline-list li {
  position: relative;
  padding: 12px 0 12px 16px;
}

.timeline-list .time {
  font-weight: 600;
  margin-right: 8px;
}

.timeline-list li::before {
  content: '';
  position: absolute;
  left: -6px;
  top: 20px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 3px rgba(91, 140, 255, 0.25);
}

.timeline .entry {
  color: var(--muted);
}

/* 价格卡 */
.pricing {
  padding: 40px 0;
}

.pricing-grid {
  grid-template-columns: repeat(3, 1fr);
}

.price-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  background: var(--card);
  text-align: left;
}

.price-card .price {
  font-size: 24px;
  font-weight: 700;
  margin: 6px 0 10px;
}

.price-card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.price-card.popular {
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.35);
}

/* 统计与进度条 */
.stats {
  padding: 40px 0;
}

.stats-grid {
  grid-template-columns: repeat(4, 1fr);
}

.stat-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  background: var(--card);
}

.stat-card .label {
  margin-bottom: 8px;
  font-weight: 600;
}

.progress {
  height: 10px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  border: 1px solid var(--border);
  overflow: hidden;
}

.progress span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

/* 联系与订阅 */
.contact {
  padding: 40px 0;
}

.contact-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 16px;
}

.contact-card,
.subscribe-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  background: var(--card);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 10px;
}

input,
textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 10px;
}

input::placeholder,
textarea::placeholder {
  color: var(--muted);
}

.form-tip {
  color: var(--muted);
  margin-top: 8px;
  min-height: 20px;
}

/* 响应式 */
@media (max-width: 992px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

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

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

  .trust-inner {
    grid-template-columns: 1fr;
  }

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

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

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

  .bottom-cta-inner {
    grid-template-columns: 1fr;
  }

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

  .zigzag-item {
    grid-template-columns: 1fr;
  }

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

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

  .contact-inner {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .grid {
    grid-template-columns: 1fr;
  }

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

  .nav a {
    display: none;
  }

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

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

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

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

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

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

/*新主题*/
:root {
  --bg: #000000;
  /* 主背景 */
  --card: #000000;
  /* 卡片背景 */
  --text: #eaeaea;
  /* 主文字 */
  --muted: #bdbdbd;
  /* 次文字 */
  --border: #232323;
  /* 边框 */
  --accent-start: #E9AD52;
  /* 渐变起始 */
  --accent-end: #FFDBB5;
  /* 渐变结束 */
}

html,
body {
  background: var(--bg);
  color: var(--text);
}

.site-header {
  background: rgba(0, 0, 0, .35);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
}

.brand img {
  filter: brightness(1.1);
}

.nav a {
  color: var(--text);
  opacity: .9;
  margin-left: 18px;
  text-decoration: none;
  font-weight: 500
}

.nav a:hover {
  opacity: 1
}

/* 英雄区：主图居中展示 */
.hero {
  position: relative;
  background: #000000;
}

.hero-inner {
  position: relative;
  min-height: 64vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  text-align: left;
  padding: 30px 20px 40px;
}

.hero-text {
  flex: 1 1 52%;
  max-width: 640px;
  margin: 0;
  padding-top: 10px;
}

.hero h1 {
  font-size: 56px;
  line-height: 1.05;
  letter-spacing: .5px;
  margin-bottom: 16px;
}

.hero p {
  font-size: 18px;
  color: var(--muted);
  margin-bottom: 28px;
}

.cta {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 14px;
}

.cta .btn {
  min-width: 180px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border-radius: 10px;
  border: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  transition: transform .15s ease, opacity .15s ease
}

.btn:hover {
  transform: translateY(-1px);
}

.btn.primary {
  border: 0;
  background: linear-gradient(94deg, var(--accent-start), var(--accent-end));
  color: #000000;
  font-weight: 700
}

.btn.ghost {
  background: rgba(255, 255, 255, .06)
}

.hero-image {
  flex: 0 0 auto;
  max-width: 420px;
  /* 缩小主图宽度（桌面） */
  margin: 0;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, .45);
  background: #000000;
}

.hero-image img {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  /* 等比例缩放，完整显示 */
  max-height: 520px;
  /* 限制高度，提升清晰度 */
  object-fit: contain;
  margin: 0 auto;
  filter: brightness(.95) contrast(1.05)
}

/* 小屏改为上下布局与按钮纵向 */
@media (max-width: 980px) {
  .hero-inner {
    flex-direction: column;
    text-align: center;
  }

  .hero-text {
    max-width: 960px;
    padding-top: 20px;
    margin: 0 auto;
  }

  .cta {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }

  .cta .btn {
    min-width: 220px;
  }

  .hero-image {
    width: 100%;
    max-width: none;
    margin: 0 auto;
    border-radius: 12px;
  }

  .hero-image img {
    width: 100%;
    height: auto;
    max-height: none;
  }
}

/* 平台卡片 */
.platforms {
  padding: 56px 0;
}

.platforms h2 {
  font-size: 28px;
  margin: 0 20px 18px
}

.grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  padding: 0 20px
}

@media (max-width:980px) {
  .grid {
    grid-template-columns: repeat(2, 1fr)
  }
}

@media (max-width:560px) {
  .grid {
    grid-template-columns: 1fr
  }
}

.platform-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px
}

.platform-card .icon {
  width: 32px;
  height: 32px
}

.platform-card .icon svg {
  width: 32px;
  height: 32px;
  display: block
}

.platform-card .icon svg .stroke {
  stroke: #FFDBB5;
  opacity: .9
}

.platform-card .icon svg .fill {
  fill: #E9AD52;
  opacity: .85
}

.platform-card h3 {
  margin: 10px 0 6px;
}

.platform-card p {
  color: var(--muted);
  margin-bottom: 12px
}

/* 步骤与特性区统一卡片风格 */
.steps,
.features,
.faq,
.compare {
  padding: 48px 0
}

.steps h2,
.features h2,
.faq h2,
.compare h2 {
  font-size: 26px;
  margin: 0 20px 16px
}

.steps-list {
  counter-reset: step;
  list-style: none;
  padding: 0 20px;
  display: grid;
  gap: 12px
}

.step-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  padding: 0 20px
}

@media (max-width:720px) {
  .features-grid {
    grid-template-columns: 1fr
  }
}

.feature-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px
}

.feature-item p {
  color: var(--muted)
}

.faq-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding: 0 20px
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px
}

.faq-item p {
  color: var(--muted)
}

.testimonials {
  padding: 40px 0
}

.testimonials-grid {
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width:980px) {
  .testimonials-grid {
    grid-template-columns: 1fr 1fr
  }
}

@media (max-width:640px) {
  .testimonials-grid {
    grid-template-columns: 1fr
  }
}

.testimonial-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px
}

.author {
  color: var(--muted);
  margin-top: 8px
}

.compare-grid {
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width:980px) {
  .compare-grid {
    grid-template-columns: 1fr 1fr
  }
}

@media (max-width:640px) {
  .compare-grid {
    grid-template-columns: 1fr
  }
}

.compare-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px
}

/* 底部 CTA */
.bottom-cta {
  padding: 40px 0
}

.bottom-cta-inner {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px
}

.bottom-cta-text p {
  color: var(--muted)
}

.bottom-cta-actions {
  display: flex;
  gap: 12px
}

/* 固定下载条 */
.fixed-bar {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: linear-gradient(94deg, var(--accent-start), var(--accent-end));
  color: #1a1a1a;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .35)
}

.bar-left {
  display: flex;
  align-items: center;
  gap: 12px
}

.bar-logo {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .25)
}

.bar-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover
}

.bar-info h4 {
  margin: 0 0 4px;
  font-size: 16px;
}

.bar-info p {
  margin: 0;
  font-size: 13px;
  color: #3b2b12
}

.bar-right {
  display: flex;
  gap: 8px
}

.btn-reg,
.btn-down {
  padding: 8px 12px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600
}

.btn-reg {
  background: #fff;
  color: #1a1a1a
}

.btn-down {
  background: #000000;
  color: #fff;
  border: 1px solid rgba(0, 0, 0, .2)
}

.bar-close {
  position: absolute;
  right: 10px;
  top: 8px;
  width: 28px;
  height: 28px;
  border: 0;
  border-radius: 8px;
  background: #000000;
  color: #fff;
  cursor: pointer
}