@charset "UTF-8";

:root {
  --color-primary: #B347FF;
  --color-primary-dark: #8A2BE2;
  --color-primary-light: #D88BFF;
  --color-accent: #FF47B3;
  --color-bg: #0F0F1A;
  --color-bg-alt: #1A1A2E;
  --color-bg-card: #1E1E32;
  --color-white: #FFFFFF;
  --color-text: #F0F0F8;
  --color-text-secondary: #A0A0B8;
  --color-text-muted: #6A6A85;
  --color-border: #2A2A40;
  --color-border-light: #3A3A55;
  --color-glow: rgba(179, 71, 255, 0.35);
  --content-width: 1200px;
  --nav-height: 72px;
  --radius: 5px;
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-width: 320px;
  overflow-x: hidden;
}

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

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

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

ul {
  list-style: none;
}

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

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

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

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

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

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

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

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

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

.section-title {
  font-size: 36px;
  font-weight: 700;
  text-align: center;
  color: var(--color-text);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-desc {
  font-size: 16px;
  color: var(--color-text-secondary);
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
  line-height: 1.8;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 15, 26, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
  will-change: transform;
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
}

.site-header.scrolled {
  box-shadow: 0 2px 20px rgba(179, 71, 255, 0.15);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-img {
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  filter: drop-shadow(0 0 6px var(--color-glow));
}

.logo-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.5px;
}

.main-nav {
  display: flex;
}

.nav-list {
  display: flex;
  gap: 8px;
}

.nav-link {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  color: var(--color-text-secondary);
  border-radius: var(--radius);
  transition: color var(--transition), background-color var(--transition);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-text);
  background-color: var(--color-bg-alt);
}

.nav-link:active {
  color: var(--color-primary-light);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.btn-download-nav {
  display: inline-flex;
  align-items: center;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius);
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 0 12px var(--color-glow);
}

.btn-download-nav:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 0 20px var(--color-glow);
}

.btn-download-nav:active {
  opacity: 0.8;
  transform: translateY(0);
}

.btn-menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  font-size: 24px;
  color: var(--color-text);
}

.btn-menu-toggle:hover {
  background-color: var(--color-bg-alt);
}

.mobile-menu {
  display: none;
  position: absolute;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 16px 24px;
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.4);
}

.mobile-menu.open {
  display: block;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-nav-link {
  display: block;
  padding: 14px 16px;
  font-size: 16px;
  color: var(--color-text);
  border-radius: var(--radius);
  transition: background-color var(--transition);
}

.mobile-nav-link:hover {
  background-color: var(--color-bg-alt);
}

.mobile-download-link {
  margin-top: 8px;
  text-align: center;
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  font-weight: 600;
}

.mobile-download-link:hover {
  opacity: 0.9;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
}

.hero-section {
  padding-top: calc(var(--nav-height) + 80px);
  padding-bottom: 80px;
  overflow: hidden;
  position: relative;
}

.hero-section::before {
  content: "";
  position: absolute;
  top: 20%;
  left: 10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(179, 71, 255, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-section::after {
  content: "";
  position: absolute;
  bottom: 10%;
  right: 5%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255, 71, 179, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  display: flex;
  align-items: center;
  gap: 80px;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.hero-content {
  flex: 1;
  min-width: 0;
}

.hero-title {
  font-size: 52px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
  letter-spacing: -1px;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 22px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

.hero-desc {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 460px;
}

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

.hero-update-time {
  margin-top: 20px;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  padding: 16px 40px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius);
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 0 20px var(--color-glow);
}

.btn-hero-primary:hover {
  opacity: 0.92;
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(179, 71, 255, 0.5);
}

.btn-hero-primary:active {
  opacity: 0.85;
  transform: translateY(0);
}

.hero-visual {
  flex-shrink: 0;
  position: relative;
}

.hero-phone-frame {
  width: 280px;
  height: 500px;
  background: var(--color-bg-card);
  border-radius: 28px;
  border: 2px solid var(--color-border-light);
  overflow: hidden;
  position: relative;
  box-shadow: 0 0 40px rgba(179, 71, 255, 0.2), 0 20px 60px rgba(0, 0, 0, 0.4);
}

.hero-screenshot {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-info-card {
  position: absolute;
  bottom: 40px;
  left: -150px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius);
  padding: 18px 22px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
  max-width: 220px;
  z-index: 2;
}

.info-card-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary-light);
  margin-bottom: 8px;
}

.info-card-badge .icon {
  font-size: 16px;
  color: var(--color-accent);
}

.info-card-text {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.features-section {
  padding: 100px 0;
  background-color: var(--color-bg-alt);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-card {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
  border: 1px solid var(--color-border);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(179, 71, 255, 0.15);
  border-color: var(--color-primary);
}

.feature-icon-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(179, 71, 255, 0.15), rgba(255, 71, 179, 0.1));
  margin-bottom: 24px;
  font-size: 28px;
  color: var(--color-primary-light);
}

.feature-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
}

.feature-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.interaction-section {
  padding: 100px 0;
}

.interaction-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 16px;
}

.flow-step {
  text-align: center;
  position: relative;
}

.flow-step::after {
  content: "";
  position: absolute;
  top: 24px;
  right: -12px;
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  opacity: 0.5;
}

.flow-step:last-child::after {
  display: none;
}

.flow-step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: var(--color-white);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
  box-shadow: 0 0 16px var(--color-glow);
}

.flow-step-content {
  padding: 0 8px;
}

.flow-step-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 10px;
}

.flow-step-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.showcase-section {
  padding: 100px 0;
  background-color: var(--color-bg-alt);
}

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

.showcase-item {
  text-align: center;
}

.showcase-img-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  margin-bottom: 16px;
  background: var(--color-bg-card);
  transition: box-shadow var(--transition);
  width: 240px;
  height: auto;
  max-width: 100%;
}

.showcase-img-wrap:hover {
  box-shadow: 0 0 20px rgba(179, 71, 255, 0.3);
}

.showcase-img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

.showcase-caption {
  font-size: 14px;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.faq-section {
  padding: 100px 0;
}

.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item:first-child {
  border-top: 1px solid var(--color-border);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 22px 0;
  text-align: left;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
  transition: color var(--transition);
}

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

.faq-question-text {
  flex: 1;
  padding-right: 16px;
}

.faq-chevron {
  font-size: 20px;
  flex-shrink: 0;
  transition: transform var(--transition);
  color: var(--color-text-muted);
}

.faq-question[aria-expanded="true"] .faq-chevron {
  transform: rotate(180deg);
  color: var(--color-primary-light);
}

.faq-answer {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.35s ease;
}

.faq-answer[aria-hidden="false"] {
  max-height: 300px;
}

.faq-answer-inner {
  padding: 0 0 22px;
}

.faq-answer-inner p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.official-site-section {
  padding: 100px 0;
  background-color: var(--color-bg-alt);
}

.official-site-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 20px 28px;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius);
  background: var(--color-bg-card);
  transition: border-color var(--transition), background-color var(--transition), box-shadow var(--transition);
}

.official-site-toggle:hover {
  border-color: var(--color-primary);
  background-color: var(--color-bg);
  box-shadow: 0 0 16px rgba(179, 71, 255, 0.15);
}

.official-site-label {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
}

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

.official-site-arrow {
  font-size: 20px;
  flex-shrink: 0;
  transition: transform var(--transition);
  color: var(--color-text-muted);
}

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

.official-site-content {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.35s ease;
}

.official-site-content[aria-hidden="false"] {
  max-height: 100px;
}

.official-site-link {
  display: block;
  padding: 16px 28px;
  max-width: 760px;
  margin: 0 auto;
  font-size: 15px;
  color: var(--color-primary-light);
  word-break: break-all;
}

.official-site-link:hover {
  text-decoration: underline;
  color: var(--color-accent);
}

.reviews-section {
  padding: 100px 0;
}

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

.review-card {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition), border-color var(--transition);
}

.review-card:hover {
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3);
  border-color: var(--color-border-light);
}

.review-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.review-number {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary-light);
  opacity: 0.5;
}

.review-date {
  font-size: 13px;
  color: var(--color-text-muted);
}

.review-body {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.9;
  margin-bottom: 20px;
}

.review-author-row {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.review-author-row .icon {
  font-size: 18px;
  flex-shrink: 0;
}

.review-author {
  font-size: 13px;
  color: var(--color-text-muted);
  font-weight: 500;
}

.download-section {
  padding: 100px 0;
  background-color: var(--color-bg-alt);
}

.download-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  max-width: 760px;
  margin: 0 auto;
  padding: 48px;
  background: var(--color-bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

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

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

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

.btn-download-main {
  display: inline-flex;
  align-items: center;
  padding: 16px 40px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius);
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 0 20px var(--color-glow);
}

.btn-download-main:hover {
  opacity: 0.92;
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(179, 71, 255, 0.5);
}

.btn-download-main:active {
  opacity: 0.85;
  transform: translateY(0);
}

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

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-logo {
  width: 28px;
  height: 28px;
  border-radius: var(--radius);
}

.footer-brand-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
}

.footer-copyright {
  font-size: 13px;
}

@media (max-width: 1024px) {
  .hero-inner {
    gap: 40px;
  }

  .hero-title {
    font-size: 42px;
  }

  .hero-phone-frame {
    width: 240px;
    height: 480px;
  }

  .hero-info-card {
    left: -20px;
    bottom: 20px;
    max-width: 180px;
    padding: 14px 16px;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .feature-card:last-child {
    grid-column: 1 / -1;
    max-width: 400px;
    justify-self: center;
  }

  .interaction-flow {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px 24px;
  }

  .flow-step:nth-child(2)::after {
    display: none;
  }

  .showcase-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

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

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

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

  .section-desc {
    font-size: 15px;
    margin-bottom: 40px;
  }

  .main-nav {
    display: none;
  }

  .btn-download-nav {
    display: none;
  }

  .btn-menu-toggle {
    display: flex;
  }

  .logo-text {
    font-size: 20px;
  }

  .hero-section {
    padding-top: calc(var(--nav-height) + 40px);
    padding-bottom: 60px;
  }

  .hero-inner {
    flex-direction: column;
    text-align: center;
    gap: 40px;
  }

  .hero-title {
    font-size: 36px;
  }

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

  .hero-desc {
    font-size: 15px;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-update-time {
    text-align: center;
  }

  .hero-phone-frame {
    width: 220px;
    height: 440px;
    margin: 0 auto;
  }

  .hero-info-card {
    display: none;
  }

  .features-section {
    padding: 64px 0;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .feature-card:last-child {
    grid-column: auto;
    max-width: none;
    justify-self: auto;
  }

  .feature-card {
    padding: 32px 24px;
  }

  .interaction-section {
    padding: 64px 0;
  }

  .interaction-flow {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .flow-step::after {
    display: none;
  }

  .showcase-section {
    padding: 64px 0;
  }

  .showcase-grid {
    display: flex;
    overflow-x: auto;
    gap: 16px;
    padding-bottom: 8px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
  }

  .showcase-item {
    flex: 0 0 240px;
    scroll-snap-align: start;
  }

  .showcase-img-wrap {
    width: 240px;
    height: auto;
  }

  .showcase-item:last-child {
    margin-right: 0;
  }

  .faq-section {
    padding: 64px 0;
  }

  .faq-question {
    font-size: 15px;
    padding: 18px 0;
  }

  .official-site-section {
    padding: 64px 0;
  }

  .official-site-toggle {
    padding: 16px 20px;
  }

  .official-site-label {
    font-size: 15px;
  }

  .reviews-section {
    padding: 64px 0;
  }

  .reviews-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .review-card {
    padding: 24px;
  }

  .download-section {
    padding: 64px 0;
  }

  .download-row {
    flex-direction: column;
    text-align: center;
    padding: 32px 24px;
    gap: 24px;
  }

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

  .btn-download-main {
    width: 100%;
    justify-content: center;
    padding: 16px 32px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .footer-copyright {
    font-size: 12px;
  }
}

@media (max-width: 430px) {
  .section-inner {
    padding: 0 16px;
  }

  .hero-section {
    padding-top: calc(var(--nav-height) + 32px);
    padding-bottom: 48px;
  }

  .hero-title {
    font-size: 32px;
  }

  .hero-phone-frame {
    width: 220px;
    height: 400px;
  }

  .btn-hero-primary {
    padding: 14px 32px;
    font-size: 15px;
  }

  .showcase-item {
    flex: 0 0 200px;
  }

  .showcase-img-wrap {
    width: 200px;
    height: auto;
  }
}