@charset "UTF-8";

:root {
  --color-primary: #FFD93D;
  --color-primary-dark: #F5C518;
  --color-primary-light: #FFF8D6;
  --color-bg: #FFFFFF;
  --color-bg-alt: #FFFCF0;
  --color-bg-screenshots: #FFF8D6;
  --color-text: #1A1A1A;
  --color-text-secondary: #5A5A5A;
  --color-text-muted: #9A9A9A;
  --color-border: #F0E9CC;
  --color-white: #FFFFFF;
  --content-width: 1200px;
  --header-height: 64px;
  --radius: 5px;
  --transition: 0.3s ease;
}

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

html {
  overflow-x: hidden;
  scroll-behavior: smooth;
}

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: var(--color-bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul {
  list-style: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

.section-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.logo img {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
}

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

.header-download-link {
  display: none;
}

/* ===== Navigation ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1001;
  height: var(--header-height);
}

.nav-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

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

.nav-list a {
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: color var(--transition);
}

.nav-list a:hover {
  color: var(--color-primary);
}

.nav-download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 20px;
  background: var(--color-primary);
  color: #1A1A1A !important;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 14px;
  transition: background var(--transition);
}

.nav-download-btn:hover {
  background: var(--color-primary-dark);
}

/* Nav Close Button (hidden on desktop) */
.nav-close {
  display: none;
}

.nav-top {
  display: none;
}

/* Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  position: relative;
  z-index: 1002;
}

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

.menu-toggle.active .menu-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active .menu-toggle-bar:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active .menu-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Hero ===== */
.hero {
  padding-top: calc(var(--header-height) + 60px);
  padding-bottom: 80px;
  overflow: visible;
  background: linear-gradient(180deg, #FFF8D6 0%, #FFFFFF 100%);
}

.hero-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hero-title {
  font-size: 48px;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.2;
}

.hero-desc {
  font-size: 18px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  white-space: nowrap;
}

.hero-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: flex-start;
  padding: 14px 36px;
  background: var(--color-primary);
  color: #1A1A1A;
  border-radius: var(--radius);
  font-size: 16px;
  font-weight: 600;
  transition: background var(--transition);
}

.hero-btn:hover {
  background: var(--color-primary-dark);
}

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

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

.phone-mockup {
  position: relative;
  background: linear-gradient(135deg, #FFD93D 0%, #F5C518 100%);
  border-radius: 24px;
  padding: 12px;
  box-shadow: 0 20px 60px rgba(245, 197, 24, 0.25);
}

/* ===== Chat Screen ===== */
.chat-screen {
  width: 280px;
  border-radius: 16px;
  overflow: hidden;
  background: #F5F5F7;
}

.chat-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--color-white);
  border-bottom: 1px solid #E8E8ED;
}

.chat-avatar img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
}

.chat-header-info {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.chat-header-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
}

.chat-header-status {
  font-size: 11px;
  color: #F5C518;
}

.chat-body {
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 260px;
}

.chat-bubble {
  max-width: 82%;
}

.chat-bubble-ai {
  align-self: flex-start;
}

.chat-bubble-ai .chat-msg {
  background: var(--color-white);
  border-radius: 14px 14px 14px 4px;
}

.chat-bubble-user {
  align-self: flex-end;
}

.chat-bubble-user .chat-msg {
  background: var(--color-primary);
  color: #1A1A1A;
  border-radius: 14px 14px 4px 14px;
}

.chat-msg {
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text);
}

/* Typing Indicator */
.chat-typing {
  align-self: flex-start;
  display: flex;
  gap: 4px;
  padding: 10px 14px;
  background: var(--color-white);
  border-radius: 14px 14px 14px 4px;
}

.typing-dot {
  width: 7px;
  height: 7px;
  background: #C4C4C8;
  border-radius: 50%;
  animation: typing-bounce 1.4s infinite ease-in-out both;
}

.typing-dot:nth-child(1) {
  animation-delay: 0s;
}

.typing-dot:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes typing-bounce {
  0%, 80%, 100% {
    transform: scale(0.6);
    opacity: 0.4;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Chat Input Bar */
.chat-input-bar {
  padding: 10px 14px;
  background: var(--color-white);
  border-top: 1px solid #E8E8ED;
}

.chat-input-placeholder {
  display: block;
  padding: 8px 12px;
  background: #F5F5F7;
  border-radius: 20px;
  font-size: 12px;
  color: var(--color-text-muted);
}

.phone-overlay-card {
  position: absolute;
  left: -170px;
  right: calc(100% + 20px);
  bottom: 40px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--radius);
  padding: 16px 20px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  width: 220px;
  max-width: none;
  z-index: 2;
}

.overlay-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: #B8860B;
  background: var(--color-primary-light);
  padding: 3px 10px;
  border-radius: var(--radius);
  margin-bottom: 8px;
}

.overlay-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.overlay-info {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* ===== Highlights ===== */
.highlights {
  padding: 80px 0;
  background: var(--color-bg-alt);
}

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

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

.highlight-card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}

.highlight-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
}

.highlight-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}

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

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

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

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

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

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

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

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

.highlight-card .icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--color-primary-light);
  border-radius: var(--radius);
  margin-bottom: 20px;
}

.highlight-card .icon::before {
  width: 24px;
  height: 24px;
}

/* ===== Screenshots ===== */
.screenshots {
  padding: 80px 0;
  background: var(--color-bg-screenshots);
}

.screenshots-header {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 40px;
}

.screenshots-desc {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.screenshot-card {
  border-radius: var(--radius);
  overflow: hidden;
}

.screenshot-img-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-white);
}

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

.screenshot-caption {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 4px;
}

.screenshot-num {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary);
}

.screenshot-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
}

.screenshot-tip {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* ===== Experience ===== */
.experience {
  padding: 80px 0;
  background: var(--color-bg);
}

.experience-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.experience-content {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.experience-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: #B8860B;
  background: var(--color-primary-light);
  padding: 4px 12px;
  border-radius: var(--radius);
  align-self: flex-start;
}

.experience-desc {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

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

.experience-mockup {
  background: linear-gradient(135deg, #FFD93D 0%, #F5C518 100%);
  border-radius: 20px;
  padding: 10px;
  box-shadow: 0 16px 48px rgba(245, 197, 24, 0.2);
}

.experience-img {
  display: block;
  border-radius: 12px;
  width: 280px;
  height: auto;
}

/* ===== FAQ ===== */
.faq {
  padding: 80px 0;
  background: var(--color-bg-alt);
}

.faq .section-title {
  text-align: center;
  margin-bottom: 40px;
}

.faq-list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  transition: color var(--transition);
}

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

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

.faq-icon {
  position: relative;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  background: var(--color-text-secondary);
  border-radius: 2px;
  transition: transform var(--transition);
}

.faq-icon::before {
  top: 9px;
  left: 0;
  width: 20px;
  height: 2px;
}

.faq-icon::after {
  top: 0;
  left: 9px;
  width: 2px;
  height: 20px;
}

.faq-question[aria-expanded="true"] .faq-icon::after {
  transform: rotate(90deg);
}

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

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

.faq-a-text {
  padding: 0 20px 18px;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* ===== Official Site ===== */
.official-site {
  padding: 0 0 80px;
  background: var(--color-bg-alt);
}

.official-entry {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-white);
  overflow: hidden;
}

.official-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  font-size: 15px;
  color: var(--color-text);
}

.official-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.official-left .icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
}

.official-left .icon::before {
  width: 22px;
  height: 22px;
}

.official-label {
  font-size: 15px;
  font-weight: 600;
}

.official-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  transition: transform var(--transition);
}

.official-arrow::before {
  width: 20px;
  height: 20px;
}

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

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

.official-url-wrap.open {
  max-height: 100px;
}

.official-url {
  display: block;
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--color-primary);
  text-decoration: underline;
}

.official-url:hover {
  color: var(--color-primary-dark);
}

/* ===== Reviews ===== */
.reviews {
  padding: 80px 0;
  background: var(--color-bg);
}

.reviews .section-title {
  text-align: center;
  margin-bottom: 40px;
}

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

.review-card {
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.review-num {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
}

.review-text {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.8;
  flex: 1;
}

.review-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 8px;
  border-top: 1px solid var(--color-border);
}

.review-author {
  font-size: 12px;
  color: var(--color-text-muted);
}

.review-date {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* ===== Download ===== */
.download {
  padding: 80px 0;
  background: linear-gradient(135deg, #FFD93D 0%, #F5C518 100%);
}

.download-layout {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
}

.download-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.download .section-title {
  color: #1A1A1A;
}

.download-desc {
  font-size: 16px;
  color: rgba(26, 26, 26, 0.75);
  line-height: 1.6;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 40px;
  background: #1A1A1A;
  color: var(--color-primary);
  border-radius: var(--radius);
  font-size: 16px;
  font-weight: 700;
  white-space: nowrap;
  transition: transform var(--transition), box-shadow var(--transition);
}

.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* ===== Footer ===== */
.footer {
  padding: 48px 0 24px;
  background: #2A2618;
  color: rgba(255, 248, 214, 0.7);
}

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

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
}

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

.footer-logo img {
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
}

.footer-desc {
  font-size: 14px;
  color: rgba(255, 248, 214, 0.5);
}

.footer-nav {
  margin-bottom: 32px;
}

.footer-nav-list {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-nav-list a {
  font-size: 14px;
  color: rgba(255, 248, 214, 0.6);
  transition: color var(--transition);
}

.footer-nav-list a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 248, 214, 0.1);
}

.footer-copy {
  font-size: 12px;
  color: rgba(255, 248, 214, 0.4);
}

/* ==============================================
   Responsive - Tablet (≤1024px)
   ============================================== */
@media (max-width: 1024px) {
  .section-title {
    font-size: 28px;
  }

  .hero-inner {
    gap: 40px;
  }

  .hero-title {
    font-size: 40px;
  }

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

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

  .screenshots-header {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .experience-layout {
    gap: 40px;
  }

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

/* ==============================================
   Responsive - Tablet (≤768px)
   ============================================== */
@media (max-width: 768px) {
  :root {
    --header-height: 56px;
  }

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

  /* Mobile Navigation */
  .menu-toggle {
    display: flex;
  }

  .header-download-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 7px 16px;
    background: var(--color-primary);
    color: #1A1A1A;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 600;
    transition: background var(--transition);
    white-space: nowrap;
  }

  .header-download-link:hover {
    background: var(--color-primary-dark);
  }

  .nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: auto;
    z-index: 1001;
    width: 280px;
    max-width: 80vw;
    height: auto;
    background: var(--color-white);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: 0;
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.08);
    overflow-y: auto;
  }

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

  .nav-inner {
    max-width: none;
    margin: 0;
    padding: 0;
    height: auto;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
  }

  /* Nav Top Row */
  .nav-top {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 20px 20px 0;
  }

  /* Nav Close Button */
  .nav-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    position: relative;
    border-radius: var(--radius);
    transition: background var(--transition);
  }

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

  .nav-close-bar {
    position: absolute;
    width: 20px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: transform var(--transition);
  }

  .nav-close-bar:nth-child(1) {
    transform: rotate(45deg);
  }

  .nav-close-bar:nth-child(2) {
    transform: rotate(-45deg);
  }

  .nav-list {
    flex-direction: column;
    gap: 0;
    text-align: left;
    width: 100%;
    padding: 24px 32px 40px;
  }

  .nav-list li {
    opacity: 0;
    transform: translateX(20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
  }

  .nav.open .nav-list li {
    opacity: 1;
    transform: translateX(0);
  }

  .nav.open .nav-list li:nth-child(1) { transition-delay: 0.1s; }
  .nav.open .nav-list li:nth-child(2) { transition-delay: 0.15s; }
  .nav.open .nav-list li:nth-child(3) { transition-delay: 0.2s; }
  .nav.open .nav-list li:nth-child(4) { transition-delay: 0.25s; }
  .nav.open .nav-list li:nth-child(5) { transition-delay: 0.3s; }
  .nav.open .nav-list li:nth-child(6) { transition-delay: 0.35s; }
  .nav.open .nav-list li:nth-child(7) { transition-delay: 0.4s; }

  .nav-list a {
    display: block;
    padding: 14px 25px;
    font-size: 17px;
    font-weight: 500;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
    transition: color var(--transition);
  }

  .nav-list a:hover {
    color: var(--color-primary);
  }

  .nav-download-btn {
    display: inline-flex;
    margin-top: 20px;
    padding: 12px 28px;
    font-size: 15px;
    border-bottom: none;
  }

  /* Nav Overlay */
  .nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s ease, visibility 0.35s ease;
  }

  .nav-overlay.open {
    opacity: 1;
    visibility: visible;
  }

  /* Hero */
  .hero {
    padding-top: calc(var(--header-height) + 40px);
    padding-bottom: 60px;
  }

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

  .hero-content {
    align-items: center;
    text-align: center;
  }

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

  .hero-desc {
    font-size: 16px;
    white-space: normal;
  }

  .hero-btn {
    align-self: center;
  }

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

  .phone-mockup {
    padding: 10px;
  }

  .chat-screen {
    width: 280px;
  }

  .chat-body {
    min-height: 260px;
  }

  .phone-overlay-card {
    display: none;
  }

  .overlay-title {
    font-size: 14px;
  }

  /* Highlights */
  .highlights {
    padding: 60px 0;
  }

  .highlights-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  /* Screenshots */
  .screenshots {
    padding: 60px 0;
  }

  .screenshots-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  /* Experience */
  .experience {
    padding: 60px 0;
  }

  .experience-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .experience-visual {
    order: -1;
  }

  .experience-mockup {
    padding: 8px;
  }

  .experience-img {
    width: 240px;
  }

  /* FAQ */
  .faq {
    padding: 60px 0;
  }

  .faq-list {
    max-width: 100%;
  }

  /* Reviews */
  .reviews {
    padding: 60px 0;
  }

  .reviews-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }

  /* Download */
  .download {
    padding: 60px 0;
  }

  .download-layout {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 24px;
  }

  .download-content {
    align-items: center;
  }

  /* Footer */
  .footer {
    padding: 40px 0 20px;
  }
}

/* ==============================================
   Responsive - Mobile (≤430px)
   ============================================== */
@media (max-width: 430px) {
  .section-container {
    padding: 0 16px;
  }

  .hero-inner {
    padding: 0 16px;
    gap: 32px;
  }

  .hero {
    padding-bottom: 60px;
  }

  .hero-title {
    font-size: 30px;
  }

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

  .chat-screen {
    width: 240px;
  }

  .chat-body {
    min-height: 220px;
  }

  .chat-msg {
    font-size: 12px;
    padding: 8px 10px;
  }

  .chat-header {
    padding: 8px 10px;
  }

  .chat-header-name {
    font-size: 13px;
  }

  .highlights-grid {
    max-width: 100%;
  }

  .screenshots-grid {
    gap: 12px;
  }

  .screenshot-caption {
    padding: 8px 2px;
  }

  .reviews-grid {
    max-width: 100%;
  }

  .download-btn {
    width: 100%;
    padding: 14px 24px;
  }
}

/* ==============================================
   Responsive - Small Mobile (≤375px)
   ============================================== */
@media (max-width: 375px) {
  .hero-title {
    font-size: 26px;
  }

  .hero {
    padding-bottom: 60px;
  }

  .chat-screen {
    width: 210px;
  }

  .chat-body {
    min-height: 200px;
    gap: 8px;
    padding: 10px 8px;
  }

  .footer-nav-list {
    gap: 16px;
  }
}