@charset "utf-8";

:root {
  --primary: #00C9A7;
  --primary-dark: #00A88A;
  --primary-light: #33D4B9;
  --primary-bg: rgba(0, 201, 167, .08);
  --text: #2d3436;
  --text-light: #636e72;
  --text-lighter: #b2bec3;
  --bg: #f8fdfb;
  --bg-card: #fff;
  --bg-card-hover: #f0faf7;
  --border: #e0ece8;
  --shadow: 0 2px 16px rgba(0, 0, 0, .06);
  --shadow-hover: 0 8px 32px rgba(0, 201, 167, .15);
  --radius: 16px;
  --radius-sm: 10px;
  --max-width: 1200px;
  --nav-height: 72px;
  --transition: .3s cubic-bezier(.4, 0, .2, 1);
}

[data-theme="dark"] {
  --text: #e8edf2;
  --text-light: #9aa5b5;
  --text-lighter: #5a6678;
  --bg: #0f1923;
  --bg-card: #1a2332;
  --bg-card-hover: #1f2b3d;
  --border: #243044;
  --shadow: 0 2px 16px rgba(0, 0, 0, .3);
  --shadow-hover: 0 8px 32px rgba(0, 201, 167, .2);
  --primary-bg: rgba(0, 201, 167, .12);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
  -webkit-tap-highlight-color: transparent;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
  -webkit-tap-highlight-color: transparent;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
  user-select: none;
  -webkit-user-drag: none;
}

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

@keyframes gradientFlow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes floatUpDown {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent;
  transition: background-color var(--transition), box-shadow var(--transition);
  height: var(--nav-height);
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
  will-change: transform;
}

.header.scrolled {
  background: var(--bg);
  box-shadow: 0 2px 20px rgba(0, 0, 0, .08);
  backdrop-filter: blur(20px);
}

[data-theme="dark"] .header.scrolled {
  background: rgba(15, 25, 35, .92);
  box-shadow: 0 2px 20px rgba(0, 0, 0, .4);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  transition: color var(--transition);
  z-index: 1001;
}

.header.scrolled .logo-link {
  color: var(--text);
}

.logo-link img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-menu a {
  padding: 8px 18px;
  border-radius: 10px;
  font-size: .95rem;
  font-weight: 500;
  color: rgba(255, 255, 255, .85);
  transition: all var(--transition);
  position: relative;
}

.header.scrolled .nav-menu a {
  color: var(--text-light);
}

.header.scrolled .nav-menu a:hover,
.header.scrolled .nav-menu a.active {
  color: var(--primary);
}

.nav-menu a:hover,
.nav-menu a.active {
  color: #fff;
  background: rgba(255, 255, 255, .12);
}

.header.scrolled .nav-menu a:hover,
.header.scrolled .nav-menu a.active {
  background: var(--primary-bg);
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  color: rgba(255, 255, 255, .85);
  transition: all var(--transition);
  margin-left: 8px;
}

.header.scrolled .theme-toggle {
  color: var(--text-light);
}

.theme-toggle:hover {
  background: rgba(255, 255, 255, .12);
  color: #fff;
}

.header.scrolled .theme-toggle:hover {
  color: var(--primary);
  background: var(--primary-bg);
}

.theme-toggle i {
  width: 20px;
  height: 20px;
  display: block;
  background: url('../icons/moon.svg') center/contain no-repeat;
}

[data-theme="dark"] .theme-toggle i {
  background-image: url('../icons/sun.svg');
}

.i-download {
  display: block;
  width: 22px;
  height: 22px;
  background: url('../icons/download.svg') center/contain no-repeat;
}

.i-users {
  display: block;
  background: url('../icons/users.svg') center/contain no-repeat;
}

.i-book {
  display: block;
  background: url('../icons/book.svg') center/contain no-repeat;
}

.i-flash {
  display: block;
  background: url('../icons/flash.svg') center/contain no-repeat;
}

.i-block {
  display: block;
  background: url('../icons/block.svg') center/contain no-repeat;
}

.i-folder {
  display: block;
  background: url('../icons/folder.svg') center/contain no-repeat;
}

.i-gift {
  display: block;
  background: url('../icons/gift.svg') center/contain no-repeat;
}

.i-smartphone {
  display: block;
  background: url('../icons/smartphone.svg') center/contain no-repeat;
}

.i-user {
  display: block;
  background: url('../icons/users.svg') center/contain no-repeat;
}

.i-star {
  display: block;
  width: 20px;
  height: 20px;
  background: url('../icons/star.svg') center/contain no-repeat;
}

.i-chevron-down {
  display: block;
  width: 18px;
  height: 18px;
  background: url('../icons/chevron-down.svg') center/contain no-repeat;
}

.i-shield {
  display: block;
  width: 28px;
  height: 28px;
  background: url('../icons/shield.svg') center/contain no-repeat;
}

.i-menu {
  display: block;
  width: 24px;
  height: 24px;
  background: url('../icons/menu.svg') center/contain no-repeat;
}

.i-close {
  display: block;
  width: 24px;
  height: 24px;
  background: url('../icons/close.svg') center/contain no-repeat;
}

.i-chevron-down-white {
  display: block;
  width: 28px;
  height: 28px;
  background: url('../icons/chevron-down.svg') center/contain no-repeat;
  filter: brightness(0) invert(1);
  opacity: .7;
}

.i-up-arrow {
  display: block;
  width: 22px;
  height: 22px;
  background: url('../images/置顶_o.svg') center/contain no-repeat;
  filter: brightness(0) invert(1);
}

.i-android {
  display: block;
  width: 24px;
  height: 24px;
  background: url('../images/安卓.svg') center/contain no-repeat;
}

.i-apple {
  display: block;
  width: 24px;
  height: 24px;
  background: url('../images/苹果.svg') center/contain no-repeat;
}

.about-tag i {
  width: 16px;
  height: 16px;
  display: block;
  flex-shrink: 0;
}

.install-card-icon i {
  width: 26px;
  height: 26px;
  display: block;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  color: rgba(255, 255, 255, .85);
  transition: all var(--transition);
  z-index: 1001;
}

.header.scrolled .menu-toggle {
  color: var(--text);
}

.menu-toggle i {
  width: 24px;
  height: 24px;
}

.hero {
  position: relative;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
  padding-top: calc(var(--nav-height) + 40px);
  padding-bottom: 60px;
  background: linear-gradient(-45deg, #00C9A7, #009688, #00BCD4, #26A69A, #00897B);
  background-size: 400% 400%;
  animation: gradientFlow 12s ease infinite;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 20%, rgba(255, 255, 255, .12) 0%, transparent 60%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(0, 201, 167, .15) 0%, transparent 50%),
    radial-gradient(circle at 80% 30%, rgba(0, 188, 212, .1) 0%, transparent 50%),
    radial-gradient(circle at 50% 80%, rgba(0, 150, 136, .12) 0%, transparent 50%);
  pointer-events: none;
  animation: gradientFlow 15s ease infinite;
  background-size: 200% 200%;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
  padding: 0 20px;
}

.hero-left {
  text-align: left;
}

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

.hero-card {
  background: rgba(255, 255, 255, .1);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: 20px;
  padding: 30px;
  width: 100%;
  max-width: 320px;
  text-align: center;
}

.hero-card-logo {
  width: 70px;
  height: 70px;
  margin: 0 auto 12px;
  border-radius: 16px;
}

.hero-card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 20px;
  opacity: .95;
}

.hero-card-lines {
  text-align: left;
  margin-bottom: 20px;
}

.line-item {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}

.line-item:last-child {
  border-bottom: none;
}

.line-name {
  font-size: .85rem;
  opacity: .9;
}

.line-status {
  font-size: .82rem;
  color: #81c784;
  font-weight: 500;
}

.hero-card-notes {
  text-align: left;
  margin-bottom: 16px;
}

.hero-card-notes p {
  font-size: .75rem;
  opacity: .75;
  line-height: 1.6;
  margin-bottom: 4px;
}

.hero-card-notes p:last-child {
  margin-bottom: 0;
}

.hero-card-ver {
  font-size: .72rem;
  opacity: .6;
  text-align: right;
}

.hero-badge {
  display: inline-block;
  background: rgba(255, 255, 255, .18);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, .2);
  padding: 6px 20px;
  border-radius: 50px;
  font-size: .85rem;
  font-weight: 500;
  margin-bottom: 24px;
  letter-spacing: .5px;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 18px;
  letter-spacing: -2px;
  line-height: 1.15;
}

.hero h1 span {
  background: linear-gradient(135deg, #fff 30%, #e0f7fa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.15rem;
  opacity: .9;
  margin-bottom: 12px;
  line-height: 1.7;
}

.hero-tagline {
  font-size: .95rem;
  opacity: .75;
  margin-bottom: 20px;
}

.hero-update-time {
  font-size: .8rem;
  opacity: .6;
  margin-top: 16px;
}

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

.hero-btns .btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 36px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  transition: all var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 4px 20px rgba(0, 0, 0, .12);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, .18);
  background: #f0fdf9;
}

.btn-outline {
  background: rgba(255, 255, 255, .12);
  color: #fff;
  border: 2px solid rgba(255, 255, 255, .35);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, .2);
  border-color: rgba(255, 255, 255, .55);
  transform: translateY(-2px);
}

.hero-btns .btn i {
  width: 24px;
  height: 24px;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  animation: floatUpDown 2s ease-in-out infinite;
  opacity: .7;
}

.hero-scroll-hint i {
  width: 28px;
  height: 28px;
  display: block;
}

.section {
  padding: 90px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-tag {
  display: inline-block;
  background: var(--primary-bg);
  color: var(--primary-dark);
  padding: 5px 16px;
  border-radius: 50px;
  font-size: .82rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: .5px;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 10px;
  letter-spacing: -.5px;
}

.section-sub {
  font-size: .95rem;
  color: var(--text-light);
  max-width: 500px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 36px 24px;
  text-align: center;
  border: 1px solid var(--border);
  transition: all var(--transition);
  cursor: default;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}

.feature-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: var(--primary-bg);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  transition: all var(--transition);
}

.feature-card:hover .feature-icon {
  background: var(--primary);
  color: #fff;
  transform: scale(1.05);
}

.feature-icon i {
  width: 28px;
  height: 28px;
}

.feature-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.feature-card p {
  font-size: .88rem;
  color: var(--text-light);
  line-height: 1.6;
}

.about-section {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}

.about-item {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 36px 32px;
  border: 1px solid var(--border);
  transition: all var(--transition);
  display: flex;
  gap: 20px;
}

.about-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}

.about-icon {
  width: 56px;
  height: 56px;
  min-width: 56px;
  background: var(--primary-bg);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
  transition: all var(--transition);
}

.about-item:hover .about-icon {
  background: var(--primary);
  color: #fff;
}

.about-icon i {
  width: 28px;
  height: 28px;
  display: block;
}

.about-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.about-content p {
  font-size: .88rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}

.about-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.about-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--primary-bg);
  color: var(--primary-dark);
  padding: 5px 12px;
  border-radius: 6px;
  font-size: .8rem;
  font-weight: 600;
}

.screenshots-section {
  overflow: hidden;
}

.scroll-wrapper {
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 10px 0 20px;
  margin: 0 -20px;
  padding-left: 20px;
  padding-right: 20px;
}

.scroll-wrapper::-webkit-scrollbar {
  display: none;
}

.scroll-track {
  display: flex;
  gap: 20px;
  width: max-content;
}

.scroll-track img {
  height: 420px;
  width: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  flex-shrink: 0;
}

.install-section .section-header {
  margin-bottom: 40px;
}

.install-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.install-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 40px 32px;
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.install-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.install-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.install-card-icon {
  width: 52px;
  height: 52px;
  background: var(--primary-bg);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}

.install-card-icon i {
  width: 26px;
  height: 26px;
}

.install-card-header h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
}

.install-card-header span {
  font-size: .82rem;
  color: var(--text-light);
}

.install-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.install-step {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.step-num {
  width: 30px;
  height: 30px;
  min-width: 30px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .82rem;
  font-weight: 700;
}

.step-text h4 {
  font-size: .9rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
}

.step-text p {
  font-size: .82rem;
  color: var(--text-light);
}

.download-section {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
}

.download-section .section-tag {
  background: rgba(255, 255, 255, .18);
  color: #fff;
}

.download-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  max-width: 700px;
  margin: 0 auto;
}

.download-card {
  background: rgba(255, 255, 255, .12);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: var(--radius);
  padding: 40px 28px;
  text-align: center;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.download-card:hover {
  background: rgba(255, 255, 255, .22);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, .2);
}

.download-card-icon {
  width: 56px;
  height: 56px;
  margin-bottom: 4px;
}

.download-card-icon i {
  width: 100%;
  height: 100%;
}

.download-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
}

.download-card p {
  font-size: .85rem;
  opacity: .8;
}

.download-card .btn-dl {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  background: #fff;
  color: var(--primary-dark);
  font-weight: 700;
  font-size: .95rem;
  transition: all var(--transition);
  margin-top: 4px;
}

.download-card .btn-dl:hover {
  transform: scale(1.04);
  box-shadow: 0 6px 24px rgba(0, 0, 0, .15);
}

.download-card .btn-dl i {
  width: 20px;
  height: 20px;
}

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

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: all var(--transition);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.review-avatar i {
  width: 22px;
  height: 22px;
  color: #fff;
}

.avatar-1 { background: linear-gradient(135deg, #00c9a7, #00bcd4); }
.avatar-2 { background: linear-gradient(135deg, #ff6b6b, #ffa502); }
.avatar-3 { background: linear-gradient(135deg, #a855f7, #6366f1); }

.review-info {
  flex: 1;
  min-width: 0;
}

.review-info .review-author {
  font-size: .95rem;
  color: var(--text);
  font-weight: 600;
  margin-bottom: 4px;
}

.review-date {
  font-size: .78rem;
  color: var(--text-light);
}

.review-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 14px;
}

.review-stars i {
  width: 18px;
  height: 18px;
  color: #f5c842;
}

.review-text {
  font-size: .95rem;
  color: var(--text);
  line-height: 1.7;
  margin-bottom: 16px;
  font-style: italic;
}

.faq-list {
  max-width: 700px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  transition: all var(--transition);
}

.faq-item:hover {
  border-color: var(--primary);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  cursor: pointer;
  font-size: .95rem;
  font-weight: 600;
  color: var(--text);
  user-select: none;
}

.faq-question i {
  width: 18px;
  height: 18px;
  color: var(--text-lighter);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.faq-item.open .faq-question i {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-item.open .faq-question {
  color: var(--primary);
}

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

.faq-item.open .faq-answer {
  max-height: 300px;
}

.faq-answer-inner {
  padding: 0 22px 18px;
  font-size: .88rem;
  color: var(--text-light);
  line-height: 1.7;
}

.safety-bar {
  background: linear-gradient(135deg, #fff8e1, #fff3e0);
  border: 1px solid #ffe0b2;
  border-radius: var(--radius-sm);
  padding: 18px 24px;
  display: flex;
  align-items: center;
  gap: 14px;
  max-width: 700px;
  margin: 30px auto 0;
}

[data-theme="dark"] .safety-bar {
  background: rgba(255, 193, 7, .08);
  border-color: rgba(255, 193, 7, .2);
}

.safety-bar i {
  width: 28px;
  height: 28px;
  color: #ff9800;
  flex-shrink: 0;
}

.safety-bar p {
  font-size: .88rem;
  color: #795548;
  line-height: 1.6;
}

[data-theme="dark"] .safety-bar p {
  color: #ffcc02;
}

.footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 40px 0;
}

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

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
}

.footer-logo img {
  width: 30px;
  height: 30px;
  border-radius: 8px;
}

.footer p {
  font-size: .82rem;
  color: var(--text-lighter);
  line-height: 1.8;
}

.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--primary);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0, 201, 167, .4);
  transition: all var(--transition);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 201, 167, .5);
}

.back-to-top i {
  width: 22px;
  height: 22px;
}

.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}

.mobile-menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 280px;
  height: 100vh;
  background: var(--bg-card);
  z-index: 1000;
  transition: right var(--transition);
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.mobile-menu.active {
  right: 0;
}

.mobile-menu a {
  padding: 14px 18px;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  transition: all var(--transition);
}

.mobile-menu a:hover,
.mobile-menu a.active {
  background: var(--primary-bg);
  color: var(--primary);
}

/* 星星 */
.aiarticle-comment-rating-icon{
    display:inline-block !important;
    width:auto !important;
    height:auto !important;
    margin-right:2px;
    color:#ffb400 !important;
    font-style:normal !important;
    font-weight:normal !important;
    line-height:1 !important;
    vertical-align:middle;
    text-decoration:none !important;
}

.aiarticle-comment-rating-icon:before{
    font-family:Arial,"Segoe UI Symbol","Noto Sans Symbols","Microsoft YaHei",sans-serif !important;
    font-style:normal !important;
    font-weight:normal !important;
    line-height:1 !important;
}

.aiarticle-comment-rating-icon.fa-star:before{
    content:"\2605" !important;
}

.aiarticle-comment-rating-icon.fa-star-o:before{
    content:"\2606" !important;
}

.aiarticle-comment-rating-icon:last-child{
    margin-right:0;
}

@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 24px; }
  .reviews-grid { grid-template-columns: repeat(2, 1fr); }
  .scroll-track img { height: 340px; }
}

@media (max-width: 768px) {
  .hero { padding-top: var(--nav-height); padding-bottom: 40px; align-items: flex-start; }
  .hero-inner { grid-template-columns: 1fr; text-align: center; padding: 30px 10px; }
  .hero-left { text-align: center; }
  .hero h1 { font-size: 2.5rem; }
  .hero-desc { font-size: .95rem; }
  .section { padding: 60px 0; }
  .section-title { font-size: 1.5rem; }
  .features-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .feature-card { padding: 24px 16px; }
  .about-grid { grid-template-columns: 1fr; gap: 20px; }
  .about-item { flex-direction: column; align-items: flex-start; }
  .reviews-grid { grid-template-columns: 1fr; }
  .download-grid { grid-template-columns: 1fr; }
  .install-cards { grid-template-columns: 1fr; }
  .scroll-track img { height: 300px; }
  .nav-menu { display: none; }
  .menu-toggle { display: flex; }
  .theme-toggle.nav-theme { margin-left: auto; }
  .hero-btns { justify-content: center; align-items: center; flex-direction: column; gap: 10px; }
  .hero-btns .btn { width: 100%; max-width: 280px; }
  .back-to-top { bottom: 20px; right: 20px; width: 40px; height: 40px; }
  .about-tag { font-size: .78rem; }
  .hero-card { max-width: 75%; padding: 20px; }
  .hero-card-logo { width: 50px; height: 50px; }
  .hero-card-notes p { font-size: .7rem; }
  .header.scrolled { backdrop-filter: none; }
}

@media (max-width: 480px) {
  .container { padding: 0 14px; }
  .hero h1 { font-size: 2rem; }
  .hero-btns .btn { width: 100%; justify-content: center; }
  .features-grid { grid-template-columns: 1fr; }
  .section-title { font-size: 1.3rem; }
  .scroll-track img { height: 300px; }
  .feature-card { padding: 20px 14px; }
  .about-item { padding: 24px 20px; }
}