:root {
  --deep-water: #061b1c;
  --dark-green: #0b3a36;
  --orange: #ff7a1a;
  --cyan: #5fe0d0;
  --cream: #f2e9d8;
  --text-main: #f2e9d8;
  --text-muted: #8ea8a6;
  --glass-bg: rgba(11, 58, 54, 0.4);
  --glass-border: rgba(95, 224, 208, 0.15);
  --radius-lg: 24px;
  --radius-md: 16px;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  background-color: var(--deep-water);
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}
a {
  text-decoration: none;
  color: inherit;
}
button, .btn {
  font-family: inherit;
  border: none;
  cursor: pointer;
}
.layout-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.header-wrap {
  padding: 20px 0 10px;
}
.brand-logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand-logo-wrap img {
  height: 36px;
  width: auto;
  border-radius: 8px;
}
.brand-name {
  font-size: 20px;
  font-weight: bold;
  letter-spacing: 1px;
}
.nav-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 27, 28, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 12px 0;
  margin-bottom: 30px;
}
.nav-scroll {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 0 20px;
}
.nav-scroll::-webkit-scrollbar {
  display: none;
}
.nav-link {
  font-size: 13px;
  color: var(--text-muted);
  white-space: nowrap;
  position: relative;
  padding-bottom: 4px;
  transition: color 0.3s;
}
.nav-link.active {
  color: var(--cream);
  font-weight: bold;
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--orange);
  border-radius: 2px;
}
/* 01 首屏 */
.hero-section {
  display: flex;
  flex-direction: column;
  gap: 40px;
  padding: 40px 0 60px;
  position: relative;
}
.hero-glow {
  position: absolute;
  right: -20%;
  top: 10%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, rgba(255,122,26,0.15) 0%, rgba(6,27,28,0) 70%);
  z-index: -1;
  pointer-events: none;
}
.hero-content {
  flex: 1;
  max-width: 540px;
}
.hero-content h1 {
  font-size: 2.8rem;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--cream);
}
.hero-content h1 span {
  color: var(--orange);
}
.hero-content p {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 30px;
  max-width: 480px;
}
.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-primary {
  background: var(--orange);
  color: var(--deep-water);
  padding: 14px 32px;
  border-radius: 30px;
  font-weight: bold;
  font-size: 16px;
  transition: transform 0.2s, background 0.2s;
  display: inline-block;
  text-align: center;
}
.btn-primary:hover {
  transform: translateY(-2px);
  background: #ff8c3a;
}
.btn-secondary {
  background: transparent;
  color: var(--cyan);
  padding: 14px 32px;
  border-radius: 30px;
  font-weight: bold;
  font-size: 16px;
  border: 1px solid var(--cyan);
  transition: background 0.2s;
  display: inline-block;
  text-align: center;
}
.btn-secondary:hover {
  background: rgba(95, 224, 208, 0.1);
}
.hero-visual {
  flex: 1;
  position: relative;
  display: flex;
  justify-content: center;
}
.phone-mockup {
  width: 100%;
  max-width: 320px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
  border: 2px solid rgba(255,255,255,0.05);
}
.phone-mockup img {
  width: 100%;
  display: block;
}
.play-btn-float {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 64px;
  height: 64px;
  background: var(--orange);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px rgba(255, 122, 26, 0.6);
  cursor: pointer;
}
.play-btn-float::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-top: 12px solid transparent;
  border-bottom: 12px solid transparent;
  border-left: 18px solid var(--deep-water);
  margin-left: 6px;
}
.tag-float {
  position: absolute;
  top: 20px;
  left: 20px;
  background: rgba(6, 27, 28, 0.8);
  backdrop-filter: blur(4px);
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  color: var(--cream);
  border: 1px solid rgba(255,255,255,0.1);
}
/* 02 切片 */
.section-title {
  font-size: 2rem;
  margin-bottom: 30px;
  color: var(--cream);
}
.section-title span {
  color: var(--cyan);
}
.slices-scroll {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 20px;
  scrollbar-width: none;
}
.slices-scroll::-webkit-scrollbar {
  display: none;
}
.slice-card {
  flex: 0 0 200px;
  aspect-ratio: 3/4;
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  background: var(--dark-green);
}
.slice-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.slice-tag {
  position: absolute;
  top: 10px;
  right: 10px;
  background: var(--orange);
  color: var(--deep-water);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: bold;
}
.slice-score {
  position: absolute;
  bottom: 10px;
  left: 10px;
  background: rgba(0,0,0,0.6);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 12px;
  color: #ffd700;
}
/* 03 合集 */
.feature-section {
  display: flex;
  flex-direction: column;
  gap: 30px;
  background: var(--dark-green);
  border-radius: var(--radius-lg);
  padding: 40px 20px;
  margin: 60px 0;
}
.feature-img {
  flex: 1;
}
.feature-img img {
  width: 100%;
  border-radius: var(--radius-md);
  display: block;
}
.feature-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.feature-text h2 {
  font-size: 1.8rem;
  margin-bottom: 16px;
}
.feature-text p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 24px;
}
.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.chip {
  background: rgba(95, 224, 208, 0.1);
  color: var(--cyan);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 14px;
  border: 1px solid rgba(95, 224, 208, 0.2);
}
/* 04 步骤 */
.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 60px;
}
.step-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 30px 24px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  position: relative;
}
.step-num {
  font-size: 3rem;
  font-weight: bold;
  color: rgba(95, 224, 208, 0.1);
  position: absolute;
  top: 10px;
  right: 20px;
  line-height: 1;
}
.step-card h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
  color: var(--cream);
}
.step-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}
/* 05 评论 */
.comments-section {
  padding: 60px 0;
}
.comments-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.comment-card {
  background: rgba(255,255,255,0.03);
  border-radius: var(--radius-md);
  padding: 24px;
}
.comment-user {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--dark-green);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  font-weight: bold;
}
.user-name {
  font-size: 0.9rem;
  color: var(--cream);
}
.comment-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.5;
}
/* 06 数据 */
.data-section {
  background: linear-gradient(180deg, var(--deep-water) 0%, var(--dark-green) 100%);
  padding: 60px 0;
  border-radius: var(--radius-lg);
  margin-bottom: 60px;
}
.data-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  text-align: center;
}
.data-item {
  padding: 20px;
}
.data-val {
  font-size: 2.5rem;
  font-weight: bold;
  color: var(--orange);
  line-height: 1.2;
  margin-bottom: 8px;
}
.data-label {
  font-size: 1rem;
  color: var(--cream);
}
/* 07 问答 */
.faq-section {
  padding: 40px 0 60px;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
details {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
summary {
  padding: 20px 24px;
  font-size: 1.05rem;
  font-weight: bold;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--cream);
}
summary::-webkit-details-marker {
  display: none;
}
summary::after {
  content: '+';
  color: var(--cyan);
  font-size: 1.5rem;
  font-weight: normal;
}
details[open] summary::after {
  content: '-';
}
.faq-content {
  padding: 0 24px 20px;
  color: var(--text-muted);
  font-size: 0.95rem;
}
/* 08 下载 */
.download-section {
  padding: 60px 0;
  margin-bottom: 40px;
}
.download-banner {
  background: linear-gradient(135deg, var(--orange) 0%, #d95e00 100%);
  border-radius: var(--radius-lg);
  padding: 50px 30px;
  text-align: center;
  color: var(--deep-water);
}
.download-banner h2 {
  font-size: 2rem;
  margin-bottom: 16px;
}
.download-banner p {
  font-size: 1.1rem;
  margin-bottom: 30px;
  opacity: 0.9;
}
.download-btns {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
}
.btn-download {
  background: var(--deep-water);
  color: var(--cream);
  padding: 14px 40px;
  border-radius: 30px;
  font-weight: bold;
  font-size: 16px;
  width: 100%;
  max-width: 300px;
  transition: transform 0.2s, background 0.2s;
  display: inline-block;
  text-align: center;
}
.btn-download:hover {
  transform: translateY(-2px);
  background: #000;
}
/* 页脚 */
.site-footer {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 30px 20px;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
}
.site-footer p {
  margin-bottom: 8px;
}
.site-footer a {
  color: var(--text-muted);
  text-decoration: underline;
}
/* 响应式 768px */
@media (min-width: 768px) {
  .hero-section {
    flex-direction: row;
    align-items: center;
    padding: 80px 0 100px;
  }
  .hero-content h1 {
    font-size: 3.5rem;
  }
  .hero-visual {
    justify-content: flex-end;
  }
  .feature-section {
    flex-direction: row;
    padding: 60px;
  }
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .comments-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .data-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .download-btns {
    flex-direction: row;
    justify-content: center;
  }
  .btn-download {
    width: auto;
  }
}
/* 响应式 1024px */
@media (min-width: 1024px) {
  .hero-content h1 {
    font-size: 4rem;
  }
  .nav-scroll {
    justify-content: center;
  }
}