@charset "UTF-8";

:root {
  --color-primary: #3cb371;
  --color-primary-dark: #2e8b57;
  --color-primary-light: #f0fff4;
  --color-accent: #ff8c42;
  --color-text: #1f2937;
  --color-text-secondary: #6b7280;
  --color-bg: #ffffff;
  --color-bg-soft: #f9fbf9;
  --color-border: #e5e7eb;
  --color-card: #ffffff;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);
  --radius-sm: 5px;
  --radius-md: 5px;
  --radius-lg: 5px;
  --radius-full: 9999px;
  --max-width: 1200px;
  --nav-height: 72px;
  --transition-base: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

h1, h2, h3, p {
  margin: 0;
}

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.icon::before {
  content: "";
  display: block;
  width: 1em;
  height: 1em;
  background: center / contain no-repeat;
}

.icon-globe::before {
  background-image: url("../icons/globe.svg");
}

.icon-arrow::before {
  background-image: url("../icons/arrow-right.svg");
}

.icon-library::before {
  background-image: url("../icons/library.svg");
}

.icon-recommend::before {
  background-image: url("../icons/recommend.svg");
}

.icon-route::before {
  background-image: url("../icons/route.svg");
}

.icon-bookshelf::before {
  background-image: url("../icons/bookshelf.svg");
}

.icon-chevron::before {
  background-image: url("../icons/chevron-down.svg");
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  padding: 12px 24px;
  border-radius: 5px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);
}

.btn-primary {
  color: #ffffff;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  box-shadow: 0 4px 12px rgba(60, 179, 113, 0.28);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(60, 179, 113, 0.36);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-large {
  padding: 16px 32px;
  font-size: 17px;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-text);
}

.section-desc {
  font-size: 16px;
  color: var(--color-text-secondary);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: #ffffff;
  border-bottom: 1px solid var(--color-border);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 20px;
  color: var(--color-text);
}

.brand-logo {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: contain;
}

.main-nav {
  display: flex;
  align-items: center;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-menu a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-base);
}

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

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  width: 44px;
  height: 44px;
  gap: 5px;
}

.menu-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 5px;
  transition: transform 0.15s ease-out, opacity 0.15s ease-out;
}

.header-download {
  flex-shrink: 0;
}

.mobile-overlay {
  position: fixed;
  inset: var(--nav-height) 0 0 0;
  z-index: 999;
  background: rgba(0, 0, 0, 0.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease-out;
  will-change: opacity;
}

.mobile-overlay.is-active {
  opacity: 1;
  pointer-events: auto;
}

.hero {
  padding-top: calc(var(--nav-height) + 64px);
  padding-bottom: 80px;
  background: linear-gradient(180deg, var(--color-primary-light) 0%, var(--color-bg) 100%);
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.hero-content {
  max-width: 520px;
}

.hero-title {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--color-text);
}

.hero-subtitle {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 16px;
}

.hero-desc {
  font-size: 17px;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
  line-height: 1.7;
}

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

.hero-update {
  display: block;
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: 16px;
}

.hero-visual {
  display: flex;
  justify-content: flex-end;
}

.phone-frame {
  position: relative;
  padding: 10px;
  background: var(--color-text);
  border-radius: 5px;
  box-shadow: var(--shadow-lg);
}

.phone-frame::before {
  content: "";
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 18px;
  background: #2a2a2a;
  border-radius: 5px;
  z-index: 2;
}

.phone-frame img {
  display: block;
  width: 280px;
  height: auto;
  aspect-ratio: 540 / 960;
  border-radius: 5px;
  background: var(--color-bg);
}

.hero-overlay {
  position: absolute;
  background: var(--color-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 10;
}

.hero-overlay-shelf {
  left: -140px;
  bottom: 45px;
  width: 240px;
  padding: 18px;
  border: 1px solid var(--color-border);
}

.overlay-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--color-text);
}

.overlay-count {
  color: var(--color-text-secondary);
  font-weight: 600;
}

.overlay-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.overlay-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-soft);
}

.overlay-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--color-primary);
  color: #ffffff;
  font-size: 11px;
  font-weight: 700;
  border-radius: 5px;
  flex-shrink: 0;
}

.overlay-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.overlay-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
}

.overlay-meta {
  font-size: 11px;
  color: var(--color-text-secondary);
}

.overlay-badge {
  font-size: 10px;
  font-weight: 700;
  color: var(--color-primary);
  flex-shrink: 0;
}

.hero-overlay-version {
  right: -16px;
  bottom: 28px;
  padding: 8px 14px;
  background: var(--color-text);
  color: #ffffff;
  font-size: 11px;
  font-weight: 600;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.features {
  padding: 96px 0;
  background: var(--color-bg);
}

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

.feature-card {
  padding: 32px 24px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-card .icon {
  font-size: 36px;
  color: var(--color-primary);
  margin-bottom: 20px;
}

.feature-title {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.screenshots {
  padding: 96px 0;
  background: var(--color-bg-soft);
}

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

.screenshot-item {
  margin: 0;
}

.screenshot-frame {
  background: var(--color-text);
  padding: 8px;
  border-radius: 5px;
  box-shadow: var(--shadow-md);
  margin-bottom: 16px;
}

.screenshot-frame img {
  width: 100%;
  height: auto;
  aspect-ratio: 540 / 960;
  border-radius: 5px;
  background: var(--color-bg);
}

.screenshot-item figcaption {
  text-align: center;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.routes {
  padding: 96px 0;
  background: var(--color-bg);
}

.routes-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  padding: 56px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-primary-light);
}

.routes-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary-dark);
  background: #ffffff;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.routes-inner .section-title {
  text-align: left;
  margin-bottom: 16px;
}

.routes-desc {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.routes-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.routes-list li {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
  color: var(--color-text);
}

.routes-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
}

.routes-visual {
  display: flex;
  justify-content: center;
}

.phone-frame-small img {
  width: 260px;
}

.faq {
  padding: 96px 0;
  background: var(--color-bg-soft);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 20px 24px;
  font-size: 17px;
  font-weight: 600;
  text-align: left;
  transition: color var(--transition-base);
}

.faq-question:hover {
  color: var(--color-primary-dark);
}

.faq-question .icon {
  font-size: 20px;
  color: var(--color-text-secondary);
  transition: transform var(--transition-base);
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-question[aria-expanded="true"] .icon {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.official {
  padding: 48px 0;
  background: var(--color-bg);
}

.official-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 20px 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-card);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.official-toggle:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.official-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.official-left .icon {
  font-size: 22px;
  color: var(--color-primary);
}

.official-title {
  font-size: 17px;
  font-weight: 600;
}

.official-toggle .icon-arrow {
  font-size: 18px;
  color: var(--color-text-secondary);
  transition: transform var(--transition-base);
}

.official-toggle[aria-expanded="true"] .icon-arrow {
  transform: rotate(90deg);
}

.official-panel {
  padding: 24px;
  margin-top: 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-soft);
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.official-panel p + p {
  margin-top: 12px;
}

.official-panel a {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

.reviews {
  padding: 96px 0;
  background: var(--color-bg);
}

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

.review-card {
  position: relative;
  padding: 28px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.review-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.review-number {
  position: absolute;
  top: 20px;
  right: 24px;
  font-size: 36px;
  font-weight: 800;
  color: var(--color-primary-light);
  line-height: 1;
}

.review-text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.review-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.review-user {
  font-weight: 600;
  color: var(--color-primary-dark);
}

.download {
  padding: 96px 0;
  background: linear-gradient(180deg, var(--color-primary-light) 0%, var(--color-bg) 100%);
}

.download-inner {
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
  padding: 56px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.download-logo {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  border-radius: 50%;
  object-fit: contain;
}

.download-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 10px;
}

.download-desc {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
}

.btn-download {
  min-width: 200px;
  margin-bottom: 16px;
}

.download-note {
  font-size: 13px;
  color: var(--color-text-secondary);
}

.site-footer {
  padding: 32px 0;
  background: var(--color-text);
  color: #ffffff;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
}

.footer-logo {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: contain;
}

.footer-copy {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
}

@media (max-width: 1024px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .routes-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .routes-inner .section-title {
    text-align: center;
  }

  .routes-list {
    align-items: center;
  }

  .hero-overlay-shelf {
    width: 200px;
    left: -40px;
    bottom: 60px;
    padding: 14px;
  }

  .hero-overlay-version {
    right: -10px;
    bottom: 20px;
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  .container {
    padding: 0 16px;
  }

  .section-title {
    font-size: 24px;
  }

  .section-header {
    margin-bottom: 36px;
  }

  .menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: var(--nav-height);
    right: 0;
    bottom: 0;
    width: 220px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 20px 16px;
    background: var(--color-text);
    transform: translateX(100%);
    transition: transform 0.2s ease-out;
    will-change: transform;
    z-index: 1002;
    list-style: none;
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.3);
    overflow-y: auto;
  }

  .nav-menu.is-open {
    transform: translateX(0);
  }

  .nav-menu a {
    display: block;
    width: 100%;
    padding: 14px 12px;
    font-size: 16px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-base), color var(--transition-base);
  }

  .nav-menu a:hover,
  .nav-menu a:focus,
  .nav-menu a:active {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.12);
  }

  .menu-toggle[aria-expanded="true"] .menu-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] .menu-bar:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle[aria-expanded="true"] .menu-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .header-download {
    display: none;
  }

  .hero {
    padding-top: calc(var(--nav-height) + 40px);
    padding-bottom: 56px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content {
    max-width: 100%;
    order: 1;
  }

  .hero-visual {
    justify-content: center;
    order: 2;
  }

  .hero-title {
    font-size: 28px;
  }

  .hero-subtitle {
    font-size: 18px;
  }

  .hero-desc {
    font-size: 15px;
  }

  .phone-frame img {
    width: 240px;
  }

  .hero-overlay {
    display: none;
  }

  .features,
  .screenshots,
  .routes,
  .faq,
  .reviews,
  .download {
    padding: 64px 0;
  }

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

  .screenshots-gallery {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding-bottom: 12px;
  }

  .screenshots-gallery::-webkit-scrollbar {
    height: 6px;
  }

  .screenshots-gallery::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-full);
  }

  .screenshot-item {
    flex: 0 0 auto;
    width: 76%;
    max-width: 280px;
    scroll-snap-align: start;
  }

  .screenshot-item:last-child {
    margin-right: 16px;
  }

  .routes-inner {
    padding: 32px 24px;
    gap: 32px;
  }

  .routes-list {
    align-items: flex-start;
  }

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

  .download-inner {
    padding: 40px 24px;
  }

  .download-title {
    font-size: 22px;
  }
}

@media (max-width: 430px) {
  .hero-title {
    font-size: 26px;
  }

  .section-title {
    font-size: 22px;
  }
}

@media (max-width: 375px) {
  .hero-title {
    font-size: 24px;
  }

  .btn-large {
    width: 100%;
  }
}