:root {
  --primary: #FF5C72;
  --primary-deep: #E6455E;
  --primary-soft: #FFF1F3;
  --dark: #20242E;
  --text: #2E3342;
  --text-sub: #5D6478;
  --bg: #FFFFFF;
  --bg-soft: #F7F8FB;
  --border: #E8EAF1;
  --radius: 16px;
  --shadow-soft: 0 4px 14px rgba(32, 36, 46, .06);
  --shadow-hover: 0 14px 30px rgba(32, 36, 46, .12);
  --container: 1200px;
  --nav-h: 64px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  transition: transform .25s ease, box-shadow .25s ease, background-color .25s ease, color .25s ease;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-deep); transform: translateY(-2px); box-shadow: 0 10px 22px rgba(255, 92, 114, .35); }
.btn-outline { border: 1px solid var(--primary); color: var(--primary); background: #fff; }
.btn-outline:hover { background: var(--primary-soft); transform: translateY(-2px); box-shadow: 0 10px 22px rgba(255, 92, 114, .18); }

/* 顶部导航 */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .94);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  height: var(--nav-h);
}

.logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: 1px;
  white-space: nowrap;
}

.logo::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: var(--primary);
  margin-right: 8px;
}

.nav-links {
  display: flex;
  gap: 2px;
  margin-left: auto;
}

.nav-links a {
  font-size: 14px;
  color: var(--text-sub);
  padding: 8px 11px;
  border-radius: 8px;
  transition: color .2s ease, background-color .2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
  background: var(--primary-soft);
}

.btn-nav {
  padding: 7px 16px;
  font-size: 14px;
  border-radius: 999px;
  white-space: nowrap;
}

/* 首屏 Hero */
.hero {
  background: linear-gradient(180deg, var(--primary-soft) 0%, #fff 100%);
  padding: 72px 0 88px;
}

.hero-inner {
  display: flex;
  align-items: center;
  gap: 56px;
}

.hero-text {
  flex: 1;
}

.hero h1 {
  font-size: 42px;
  line-height: 1.3;
  color: var(--dark);
  font-weight: 800;
}

.ver-pill {
  display: inline-block;
  vertical-align: middle;
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  background: #fff;
  border: 1px solid var(--primary);
  border-radius: 999px;
  padding: 2px 14px;
  margin-left: 6px;
}

.hero-desc {
  margin-top: 20px;
  font-size: 16px;
  color: var(--text-sub);
  max-width: 560px;
}

.hero-btns {
  margin-top: 32px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-img {
  flex: 0 0 340px;
}

.hero-img img {
  width: 100%;
  border-radius: 20px;
  box-shadow: var(--shadow-hover);
}

/* 通用区块 */
.section {
  padding: 88px 0;
}

.section.soft {
  background: var(--bg-soft);
}

.sec-head {
  text-align: center;
  margin-bottom: 48px;
}

.sec-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-soft);
  border-radius: 999px;
  padding: 4px 16px;
  margin-bottom: 14px;
}

.sec-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--dark);
}

.sec-sub {
  margin-top: 10px;
  font-size: 15px;
  color: var(--text-sub);
}

/* 悬停上浮卡片（预览/要点/功能/数据/评价共用） */
.preview-card,
.point,
.feature-card,
.data-card,
.review-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform .3s ease, box-shadow .3s ease;
}

.preview-card:hover,
.point:hover,
.feature-card:hover,
.data-card:hover,
.review-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.point-icon,
.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--primary-soft);
  color: var(--primary);
}

.point-icon svg,
.feature-icon svg {
  width: 24px;
  height: 24px;
}

/* 作品预览 */
.preview-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.preview-card {
  overflow: hidden;
}

.preview-card img {
  width: 100%;
}

/* 产品介绍 */
.intro-wrap {
  max-width: 880px;
  margin: 0 auto;
  text-align: center;
  font-size: 15px;
  color: var(--text-sub);
}

.intro-points {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 44px;
}

.point {
  padding: 28px 16px;
}

.point h3 {
  margin-top: 14px;
  font-size: 16px;
  color: var(--dark);
}

/* 核心功能 */
.feature-grid,
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  padding: 32px 26px;
}

.feature-card h3 {
  margin: 18px 0 10px;
  font-size: 18px;
  color: var(--dark);
}

.feature-card p {
  font-size: 14px;
  color: var(--text-sub);
}

/* 优势对比 */
.compare-wrap {
  max-width: 960px;
  margin: 0 auto;
  overflow-x: auto;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.compare-table th,
.compare-table td {
  padding: 15px 18px;
  text-align: center;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
}

.compare-table thead th {
  background: var(--dark);
  color: #fff;
  font-weight: 600;
}

.compare-table th:first-child,
.compare-table td:first-child {
  text-align: left;
  color: var(--text-sub);
  font-size: 13px;
  white-space: nowrap;
}

.compare-table thead th:first-child {
  color: #C6CBD8;
}

.compare-table thead th:nth-child(2) {
  background: var(--primary);
}

.compare-table th:nth-child(2),
.compare-table td:nth-child(2) {
  background: var(--primary-soft);
}

.compare-table tbody tr:last-child td {
  border-bottom: none;
}

.compare-table .ok {
  color: var(--primary);
  font-weight: 700;
}

/* 平台数据 */
.data-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.data-card {
  padding: 36px 20px;
  text-align: center;
}

.data-num {
  font-size: 42px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.data-label {
  margin-top: 10px;
  font-size: 14px;
  color: var(--text-sub);
}

/* 用户评价 */
.review-card {
  padding: 24px;
}

.review-top {
  display: flex;
  align-items: center;
  gap: 12px;
}

.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
}

.review-card:nth-child(2) .avatar { background: #FF9F43; }
.review-card:nth-child(3) .avatar { background: #22C58B; }
.review-card:nth-child(4) .avatar { background: #5B8CFF; }
.review-card:nth-child(5) .avatar { background: #E85DC1; }
.review-card:nth-child(6) .avatar { background: #14B8A6; }

.review-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--dark);
}

.stars {
  font-size: 13px;
  color: #FFB400;
  letter-spacing: 2px;
}

.review-card > p {
  margin-top: 14px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
}

/* 版本更新 */
.version-card {
  max-width: 780px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 36px;
  box-shadow: var(--shadow-soft);
}

.version-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding-bottom: 20px;
  border-bottom: 1px dashed var(--border);
}

.version-no {
  font-size: 22px;
  font-weight: 800;
  color: var(--dark);
}

.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: #fff;
  background: var(--primary);
  border-radius: 999px;
  padding: 2px 12px;
  vertical-align: middle;
  margin-left: 8px;
}

.version-date {
  font-size: 14px;
  color: var(--text-sub);
}

.version-list {
  list-style: none;
  margin-top: 22px;
  display: grid;
  gap: 14px;
}

.version-list li {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
}

.tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  border-radius: 6px;
  padding: 1px 8px;
  margin-right: 8px;
}

.tag-new { color: var(--primary); background: var(--primary-soft); }
.tag-opt { color: #2E7D32; background: #E8F5E9; }
.tag-fix { color: #B26A00; background: #FFF3E0; }

/* FAQ */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow .3s ease;
}

.faq-item.open {
  box-shadow: var(--shadow-soft);
}

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: none;
  border: none;
  font-size: 15px;
  font-weight: 600;
  color: var(--dark);
  text-align: left;
  cursor: pointer;
}

.faq-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 18px;
  line-height: 1;
  flex-shrink: 0;
  transition: transform .3s ease;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}

.faq-a-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.9;
}

/* 下载区域 */
.download {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-deep) 100%);
  text-align: center;
  color: #fff;
}

.dl-title {
  font-size: 38px;
  font-weight: 800;
  color: #fff;
}

.dl-pill {
  color: #fff;
  background: rgba(255, 255, 255, .18);
  border-color: rgba(255, 255, 255, .5);
}

.dl-meta {
  margin-top: 14px;
  font-size: 14px;
  color: rgba(255, 255, 255, .88);
  white-space: nowrap;
}

.dl-dot {
  margin: 0 8px;
}

.dl-btns {
  margin-top: 32px;
  display: flex;
  justify-content: center;
  gap: 16px;
}

.dl-btn {
  background: #fff;
  color: var(--primary);
  border-radius: 999px;
  padding: 14px 34px;
  font-weight: 700;
  font-size: 16px;
}

.dl-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(0, 0, 0, .18);
  color: var(--primary-deep);
}

.dl-tip {
  margin-top: 24px;
  font-size: 14px;
  color: rgba(255, 255, 255, .92);
}

/* 页脚 */
.footer {
  background: var(--dark);
  color: #A9AFBF;
  text-align: center;
  padding: 36px 0;
  font-size: 13px;
}

.footer-link {
  color: #fff;
  font-weight: 600;
}

.footer-link:hover {
  color: var(--primary);
}

.footer-note {
  margin-top: 6px;
  font-size: 12px;
  color: #6E7483;
}

/* 返回顶部 */
.to-top {
  position: fixed;
  right: 24px;
  bottom: 32px;
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  box-shadow: 0 8px 20px rgba(255, 92, 114, .4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .3s ease, transform .3s ease, visibility .3s;
  z-index: 99;
}

.to-top.show {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.to-top:hover {
  background: var(--primary-deep);
}

/* 平板 */
@media (max-width: 1024px) {
  .nav-links a { padding: 8px 8px; font-size: 13px; }
  .preview-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid,
  .review-grid { grid-template-columns: repeat(2, 1fr); }
  .intro-points { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-inner { justify-content: space-between; }
}

/* 移动端 */
@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .logo { font-size: 18px; }
  .section { padding: 56px 0; }
  .sec-title { font-size: 24px; }
  .sec-head { margin-bottom: 36px; }

  .hero { padding: 44px 0 56px; }
  .hero-inner { flex-direction: column; gap: 36px; }
  .hero-text { width: 100%; }
  .hero h1 { font-size: 27px; }
  .hero-desc { font-size: 15px; }
  .hero-btns { flex-direction: column; width: 100%; }
  .hero-btns .btn { width: 100%; }
  .hero-img { flex: none; width: 100%; max-width: 340px; margin: 0 auto; }

  .preview-grid { grid-template-columns: 1fr; }
  .intro-points { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .point { padding: 22px 12px; }
  .feature-grid,
  .review-grid { grid-template-columns: 1fr; }
  .data-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .data-num { font-size: 30px; }
  .data-card { padding: 26px 12px; }

  .compare-table th,
  .compare-table td { padding: 11px 7px; font-size: 12px; }
  .compare-table th:first-child,
  .compare-table td:first-child { font-size: 12px; }
  .compare-table thead th { font-size: 12px; }

  .version-card { padding: 24px 20px; }
  .version-no { font-size: 18px; }
  .faq-q { padding: 16px 18px; }
  .faq-a-inner { padding: 0 18px 18px; }

  .dl-title { font-size: 26px; }
  .dl-meta { font-size: 12px; }
  .dl-btns { flex-direction: column; width: 100%; }
  .dl-btn { width: 100%; }

  .to-top { right: 16px; bottom: 20px; width: 40px; height: 40px; font-size: 18px; }
}