/* ==========================================
   禅悦 Landing Page — Zen Design System
   ========================================== */

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

:root {
  --zenBg: #F6F3EE;
  --zenCard: #FFFDF9;
  --zenInk: #2D2A26;
  --zenBrown: #8C6A43;
  --zenAccent: #C2A878;
  --zenSubtle: #5A554E;
  --zenBorder: #D9D2C5;
  --goldAccent: #C5A065;
  --incenseStart: #4A3B32;
  --incenseEnd: #3E3025;
  --paperBg: #F2EFE9;
  --paperInk: #3E3832;
  --paperBrown: #5D4F43;
  --guideWarmSand: #E8E4D9;

  --radius-lg: 20px;
  --radius-btn: 24px;
  --radius-tag: 8px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --d-micro: 120ms;
  --d-comp: 260ms;
  --d-reveal: 600ms;
  --pad: 20px;
  --g-sm: 8px;
  --g-md: 16px;
  --g-lg: 24px;
  --g-xl: 32px;
  --g-2xl: 48px;
}

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; scroll-padding-top: 80px; }
body { font-family: 'Noto Serif SC', serif; color: var(--zenInk); background: var(--zenBg); line-height: 1.6; overflow-x: hidden; position: relative; }

/* === Global Ambient Background === */
.global-grain { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; pointer-events: none; z-index: 9999; opacity: 0.04; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E"); }
.ambient-glow { position: fixed; top: -20vh; left: 50%; transform: translate3d(-50%, 0, 0); width: 80vw; height: 80vw; max-width: 1200px; max-height: 1200px; border-radius: 50%; background: radial-gradient(circle, rgba(194,168,120,0.06) 0%, rgba(194,168,120,0.02) 40%, rgba(246,243,238,0) 70%); pointer-events: none; z-index: 0; animation: ambient-breathe 15s ease-in-out infinite; will-change: transform, opacity; }
@keyframes ambient-breathe { 0%, 100% { opacity: 0.6; transform: translate3d(-50%, 0, 0) scale(1); } 50% { opacity: 1; transform: translate3d(-50%, 0, 0) scale(1.05); } }
.calligraphy { font-family: 'MaShanZheng', cursive; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
  .smoke { display: none; }
  .reveal { opacity: 1; transform: none; }
}

/* === Global Design Polish === */
::selection { background: rgba(140, 106, 67, 0.2); color: var(--zenInk); }
::-moz-selection { background: rgba(140, 106, 67, 0.2); color: var(--zenInk); }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--zenBg); }
::-webkit-scrollbar-thumb { background: rgba(140, 106, 67, 0.3); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(140, 106, 67, 0.6); }

:focus-visible { outline: 2px solid var(--zenBrown); outline-offset: 2px; border-radius: 2px; }

/* === Mobile Sticky Bar === */
.mobile-sticky-bar { position: fixed; bottom: 0; left: 0; right: 0; background: rgba(255, 253, 249, 0.85); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-top: 1px solid rgba(217,210,197,0.4); padding: 10px var(--pad) calc(10px + env(safe-area-inset-bottom)); z-index: 1000; transform: translateY(100%); transition: transform 300ms var(--ease); }
.mobile-sticky-bar.visible { transform: translateY(0); }
.mobile-sticky-bar.hidden { transform: translateY(100%); }
.sticky-bar-inner { display: flex; align-items: center; gap: 10px; max-width: 600px; margin: 0 auto; }
.sticky-bar-logo { width: 32px; height: 32px; border-radius: 8px; }
.sticky-bar-title { font-family: 'MaShanZheng', cursive; font-size: 16px; color: var(--zenInk); }
.sticky-bar-btn { flex: 1; text-align: center; background: var(--zenBrown); color: white; padding: 10px 0; border-radius: var(--radius-btn); font-weight: 600; font-size: 14px; letter-spacing: 2px; }
.sticky-bar-try { flex-shrink: 0; padding: 10px 14px; border: 1px solid var(--zenBorder); border-radius: var(--radius-btn); font-size: 13px; color: var(--zenBrown); letter-spacing: 1px; white-space: nowrap; }
.sticky-bar-actions { display: flex; align-items: center; gap: 10px; flex: 1; }
.mobile-menu-btn { display: none; width: 36px; height: 36px; flex-direction: column; justify-content: center; align-items: center; gap: 5px; background: none; border: 1px solid var(--zenBorder); border-radius: 10px; cursor: pointer; padding: 6px; flex-shrink: 0; }
.mobile-menu-btn span { display: block; width: 18px; height: 1.5px; background: var(--zenInk); border-radius: 1px; transition: transform var(--d-comp) var(--ease), opacity var(--d-comp) var(--ease); }
.mobile-menu-btn[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-menu-btn[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.mobile-menu-btn[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Menu Overlay */
.mobile-menu-overlay { position: fixed; inset: 0; z-index: 2000; background: rgba(246,243,238,0.98); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); transform: translateX(100%); transition: transform 0.4s var(--ease); display: flex; flex-direction: column; }
.mobile-menu-overlay.open { transform: translateX(0); }
.mobile-menu-content { flex: 1; display: flex; flex-direction: column; padding: 24px var(--pad); max-width: 400px; margin: 0 auto; width: 100%; }
.mobile-menu-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--g-2xl); padding-top: env(safe-area-inset-top); }
.mobile-menu-brand { display: flex; align-items: center; gap: 8px; }
.mobile-menu-logo { width: 36px; height: 36px; border-radius: 10px; }
.mobile-menu-title { font-size: 22px; letter-spacing: 4px; }
.mobile-menu-close { width: 40px; height: 40px; background: none; border: 1px solid var(--zenBorder); border-radius: 12px; cursor: pointer; display: flex; align-items: center; justify-content: center; color: var(--zenInk); transition: background var(--d-micro) var(--ease); }
.mobile-menu-close:hover { background: var(--zenBg); }
.mobile-menu-close svg { width: 20px; height: 20px; }
.mobile-menu-nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.mobile-menu-link { display: block; padding: 16px 0; font-size: 20px; letter-spacing: 3px; color: var(--zenInk); border-bottom: 1px solid rgba(217,210,197,0.3); transition: color var(--d-micro) var(--ease), padding-left var(--d-micro) var(--ease); }
.mobile-menu-link:hover { color: var(--zenBrown); padding-left: 8px; }
.mobile-menu-download { color: white; background: var(--zenBrown); text-align: center; border-radius: var(--radius-btn); border: none; margin-top: var(--g-lg); padding: 16px; letter-spacing: 4px; font-weight: 600; }
.mobile-menu-download:hover { background: #7A5C38; padding-left: 16px; color: white; }
.mobile-menu-footer { text-align: center; padding-top: var(--g-xl); }

@media (min-width: 768px) { .mobile-sticky-bar { display: none; } .mobile-menu-overlay { display: none; } }
@media (max-width: 767px) { .desktop-navbar { display: none !important; } .mobile-menu-btn { display: flex; } }

/* === HERO === */
.hero { position: relative; min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; overflow: hidden; }
.hero::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse at center top, var(--zenCard), var(--zenBg)); z-index: 0; }

.paper-texture { position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 4 4' xmlns='http://www.w3.org/2000/svg'%3E%3Crect x='0' y='0' width='1' height='1' fill='%238C6A43' opacity='0.015'/%3E%3Crect x='2' y='2' width='1' height='1' fill='%238C6A43' opacity='0.02'/%3E%3C/svg%3E");
  background-repeat: repeat; background-size: 4px 4px;
}

.lotus-bg { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 500px; height: 500px; z-index: 1; opacity: 0.14; pointer-events: none; }

.smoke-container { position: absolute; bottom: 25%; left: 50%; transform: translateX(-50%); width: 120px; height: 220px; z-index: 2; pointer-events: none; }
.smoke { position: absolute; bottom: 0; width: 44px; height: 90px; background: radial-gradient(ellipse at bottom, rgba(140,106,67,0.18), transparent 70%); border-radius: 50%; filter: blur(10px); animation: smoke-rise 6s ease-out infinite; }
.smoke-1 { left: 15%; animation-delay: 0s; animation-duration: 5s; }
.smoke-2 { left: 35%; animation-delay: 1.2s; animation-duration: 6s; width: 34px; }
.smoke-3 { left: 55%; animation-delay: 2.4s; animation-duration: 5.5s; width: 54px; }
.smoke-4 { left: 25%; animation-delay: 3.6s; animation-duration: 7s; width: 28px; }
.smoke-5 { left: 50%; animation-delay: 4.8s; animation-duration: 6.5s; width: 38px; }
@keyframes smoke-rise {
  0% { transform: translateY(0) scaleX(1) rotate(0deg); opacity: 0; }
  15% { opacity: 0.35; }
  50% { transform: translateY(-140px) scaleX(1.8) rotate(5deg); opacity: 0.22; }
  100% { transform: translateY(-280px) scaleX(2.5) rotate(-8deg); opacity: 0; }
}

.hero-content { position: relative; z-index: 3; text-align: center; padding: 0 var(--pad); }
.hero-logo { width: 80px; height: 80px; border-radius: 20px; margin: 0 auto var(--g-xl); }
.hero-title { font-size: 56px; letter-spacing: 16px; color: var(--zenInk); margin-bottom: var(--g-md); line-height: 1.1; }
.hero-subtitle { font-size: 16px; letter-spacing: 8px; color: var(--zenSubtle); margin-bottom: var(--g-sm); }
.hero-tagline { font-size: 13px; letter-spacing: 4px; color: var(--zenSubtle); opacity: 0.6; margin-bottom: var(--g-2xl); }

.hero-cta { display: inline-flex; align-items: center; gap: 8px; padding: 12px 24px; background: transparent; color: var(--zenBrown); border: 1.5px solid var(--zenBrown); border-radius: var(--radius-btn); font-size: 14px; letter-spacing: 2px; font-weight: 600; transition: transform var(--d-micro) var(--ease), box-shadow var(--d-micro) var(--ease), background var(--d-micro) var(--ease); }
.hero-cta:hover { transform: scale(0.98); background: rgba(140,106,67,0.06); box-shadow: 0 4px 20px rgba(140,106,67,0.15); }
.hero-cta-primary { display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; background: var(--zenBrown); color: white; border-radius: var(--radius-btn); font-size: 14px; letter-spacing: 2px; font-weight: 600; transition: transform var(--d-micro) var(--ease), box-shadow var(--d-micro) var(--ease); }
.hero-cta-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(140,106,67,0.35); }
.hero-cta-group { display: flex; align-items: center; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hook-cta-wrap { margin-top: 40px; }
.section-title-center { text-align: center; margin-bottom: var(--g-xl); }
.section-desc-center { text-align: center; }
.hero-cta-btn { display: inline-block; padding: 16px 36px; background: var(--zenBrown); color: white; border-radius: 30px; font-size: 16px; font-weight: 600; letter-spacing: 2px; text-decoration: none; transition: transform 0.2s, box-shadow 0.2s; box-shadow: 0 4px 15px rgba(140,106,67,0.3); }
.hero-cta-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(140,106,67,0.4); color: white; }

.hero-footer { position: absolute; bottom: 48px; left: 0; right: 0; z-index: 3; text-align: center; }

/* === Zen Decorative === */
.zen-divider-vertical { width: 1px; height: 32px; background: linear-gradient(to bottom, transparent, rgba(140,106,67,0.3)); margin: 0 auto var(--g-md); }
.zen-quote-subtle { font-size: 14px; letter-spacing: 8px; color: var(--zenSubtle); opacity: 0.55; text-align: center; }
.diamond-divider { display: flex; align-items: center; justify-content: center; gap: 12px; }
.diamond { color: var(--zenBrown); font-size: 12px; opacity: 0.3; }
.diamond-line { width: 40px; height: 1px; background: var(--zenBrown); opacity: 0.2; }
.zen-transition { padding: var(--g-xl) 0; text-align: center; }

/* === Emotional Hook === */
.emotional-hook { padding: var(--g-2xl) var(--pad); text-align: center; }
.hook-text { font-size: 28px; color: var(--zenInk); letter-spacing: 6px; margin-bottom: var(--g-md); }
.hook-subtext { font-size: 14px; color: var(--zenSubtle); letter-spacing: 2px; }
.section-transition { margin-bottom: var(--g-xl); }

/* === Screenshots Carousel === */
.screenshots { padding: var(--g-2xl) var(--pad); text-align: center; }
.section-title { font-size: 32px; letter-spacing: 4px; color: var(--zenInk); }
.section-desc { font-size: 14px; color: var(--zenSubtle); margin-bottom: var(--g-xl); }

.carousel-wrapper { position: relative; max-width: 340px; margin: 0 auto var(--g-xl); overflow: hidden; touch-action: pan-y; }
.carousel-track { display: flex; transition: transform 400ms var(--ease); }
.carousel-slide { min-width: 100%; display: flex; flex-direction: column; align-items: center; padding: 4px 0; }

.phone-frame { width: 260px; height: 520px; background: var(--zenInk); border-radius: 40px; padding: 12px; box-shadow: 0 20px 60px rgba(45,42,38,0.12), 0 4px 12px rgba(45,42,38,0.06); flex-shrink: 0; }
.phone-screen { width: 100%; height: 100%; border-radius: 28px; overflow: hidden; display: flex; flex-direction: column; }
.phone-screenshot { width: 100%; height: 100%; object-fit: cover; object-position: top; display: block; }

.phone-label { font-family: 'MaShanZheng', cursive; font-size: 16px; color: var(--zenSubtle); margin-top: var(--g-md); letter-spacing: 4px; }

.carousel-btn { position: absolute; top: 50%; transform: translateY(-50%); width: 36px; height: 36px; background: var(--zenCard); border: 1px solid var(--zenBorder); border-radius: 50%; cursor: pointer; display: flex; align-items: center; justify-content: center; z-index: 5; transition: background var(--d-micro) var(--ease); }
.carousel-btn:hover { background: var(--zenBrown); }
.carousel-btn svg { width: 16px; height: 16px; color: var(--zenSubtle); }
.carousel-btn:hover svg { color: white; }
.carousel-prev { left: 4px; }
.carousel-next { right: 4px; }

.carousel-dots { display: flex; justify-content: center; gap: 8px; }
.carousel-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--zenBorder); border: none; cursor: pointer; transition: all var(--d-comp) var(--ease); }
.carousel-dot.active { background: var(--zenBrown); width: 24px; border-radius: 4px; }

@media (min-width: 768px) {
  .carousel-wrapper { max-width: 900px; overflow: hidden; padding: 24px 0; }
  .carousel-slide { min-width: 33.3333%; transition: opacity 0.4s ease; opacity: 0.4; }
  .carousel-slide.active-slide { opacity: 1; }
  .phone-frame { width: 220px; height: 440px; border-radius: 32px; padding: 10px; transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease); }
  .carousel-slide.active-slide .phone-frame { transform: scale(1.08); box-shadow: 0 24px 60px rgba(45,42,38,0.15), 0 8px 16px rgba(45,42,38,0.08); }
  .phone-screen { border-radius: 22px; }
  .phone-label { font-size: 14px; }
  .carousel-btn.carousel-prev { left: 20px; }
  .carousel-btn.carousel-next { right: 20px; }
}

/* === Core Features === */
.features { padding: var(--g-2xl) var(--pad); text-align: center; }

/* === AI Demo === */
.ai-demo { padding: var(--g-2xl) var(--pad); text-align: center; }
.ai-capabilities { display: flex; justify-content: center; gap: var(--g-sm); margin-bottom: var(--g-xl); flex-wrap: wrap; }
.ai-tag { padding: 6px 14px; background: var(--zenBg); border: 1px solid var(--zenBorder); border-radius: var(--radius-tag); font-size: 13px; color: var(--zenSubtle); letter-spacing: 1px; }
.chat-demo { max-width: 600px; margin: 0 auto var(--g-xl); display: flex; flex-direction: column; gap: var(--g-md); }
.chat-bubble { display: flex; gap: var(--g-sm); align-items: flex-start; }
.chat-user { justify-content: flex-end; }
.chat-ai { justify-content: flex-start; }
.bubble-avatar { width: 32px; height: 32px; border-radius: 10px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.user-avatar { background: var(--zenBg); border: 1px solid var(--zenBorder); }
.user-avatar svg { width: 18px; height: 18px; color: var(--zenSubtle); }
.ai-avatar { overflow: hidden; }
.bubble-content { padding: 12px 16px; border-radius: 16px; font-size: 14px; line-height: 1.7; max-width: 80%; }
.chat-user .bubble-content { background: var(--zenBrown); color: white; border-radius: 16px 16px 4px 16px; }
.chat-ai .bubble-content { background: var(--zenCard); border: 1px solid var(--zenBorder); border-left: 2.5px solid var(--zenBrown); border-radius: 16px 16px 16px 4px; color: var(--zenInk); }
.typing-cursor { display: inline; animation: cursor-blink 0.8s step-end infinite; color: var(--zenBrown); }
@keyframes cursor-blink { 0%, 50% { opacity: 1; } 51%, 100% { opacity: 0; } }
.ai-demo-footer { text-align: center; }

/* === Download === */
.download { position: relative; padding: var(--g-2xl) var(--pad); text-align: center; overflow: hidden; }
.mandala-decoration { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 600px; height: 600px; pointer-events: none; opacity: 0.12; z-index: 0; }
.mandala-svg { width: 100%; height: 100%; animation: spin-slow 60s linear infinite; }
.download-content { position: relative; z-index: 1; }
.download-title { font-size: 40px; letter-spacing: 6px; color: var(--zenInk); margin-bottom: var(--g-sm); }
.download-tagline { font-size: 14px; letter-spacing: 2px; color: var(--zenSubtle); margin-bottom: var(--g-xl); }

.download-platforms { display: flex; justify-content: center; gap: var(--g-2xl); margin-top: var(--g-xl); margin-bottom: var(--g-xl); flex-wrap: wrap; }
.platform-col { display: flex; flex-direction: column; align-items: center; gap: var(--g-md); }
.download-btn { position: relative; overflow: hidden; display: inline-flex; align-items: center; gap: 12px; padding: 16px 32px; border-radius: var(--radius-btn); text-decoration: none; transition: transform var(--d-micro) var(--ease), box-shadow var(--d-micro) var(--ease); width: 200px; justify-content: center; }
.download-btn::after { content: ''; position: absolute; top: 0; left: -100%; width: 50%; height: 100%; background: linear-gradient(to right, rgba(255,255,255,0) 0%, rgba(255,255,255,0.2) 50%, rgba(255,255,255,0) 100%); transform: skewX(-25deg); transition: none; }
.download-btn:hover { transform: translateY(-4px); box-shadow: 0 12px 24px rgba(62,56,50,0.15); }
.download-btn:hover::after { left: 200%; transition: left 0.8s ease-in-out; }
.download-ios { background: var(--zenInk); color: white; }
.download-android { background: var(--guideWarmSand); color: var(--zenInk); }
.btn-icon-lg { width: 24px; height: 24px; }
.btn-text { display: flex; flex-direction: column; text-align: left; }
.btn-label-small { font-size: 12px; opacity: 0.7; }
.btn-label-big { font-size: 16px; font-weight: 700; letter-spacing: 1px; }

.qr-item { display: flex; flex-direction: column; align-items: center; }
.qrcode-container { display: inline-block; margin-bottom: var(--g-sm); padding: 12px; background: var(--zenBg); border-radius: 16px; border: 1px solid var(--zenBorder); }
.qrcode-container img, .qrcode-container canvas { display: block; border-radius: 4px; }
.qrcode-hint { font-size: 13px; color: var(--zenSubtle); letter-spacing: 1px; }

@media (max-width: 767px) {
  .download-platforms { flex-direction: column; gap: var(--g-xl); }
}

/* === Footer === */
.footer { padding: var(--g-xl) var(--pad) var(--g-md); text-align: center; background: var(--zenBg); border-top: 1px solid var(--zenBorder); }
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: var(--g-sm); }
.footer-brand { display: flex; align-items: center; gap: var(--g-sm); }
.footer-logo { width: 28px; height: 28px; border-radius: 7px; }
.footer-name { font-size: 18px; color: var(--zenInk); letter-spacing: 4px; }
.footer-divider { margin: var(--g-md) 0; }
.footer-quote { margin-bottom: var(--g-md); }
.footer-copyright { font-size: 12px; color: var(--zenSubtle); opacity: 0.5; }

/* === Desktop Navbar === */
.desktop-navbar { position: fixed; top: 0; left: 0; right: 0; z-index: 1100; background: rgba(246,243,238,0.85); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid rgba(217,210,197,0.3); }
.navbar-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 10px 24px; }
.navbar-brand { display: flex; align-items: center; gap: 8px; }
.navbar-logo { width: 28px; height: 28px; border-radius: 8px; }
.navbar-title { font-family: 'MaShanZheng', cursive; font-size: 18px; color: var(--zenInk); letter-spacing: 4px; }
.navbar-links { display: flex; gap: 24px; align-items: center; }
.navbar-link { font-size: 13px; color: var(--zenSubtle); letter-spacing: 1px; transition: color var(--d-micro) var(--ease); }
.navbar-link:hover { color: var(--zenBrown); }
.navbar-cta { padding: 8px 20px; background: var(--zenBrown); color: white; border-radius: var(--radius-btn); font-size: 13px; letter-spacing: 1px; font-weight: 600; transition: transform var(--d-micro) var(--ease); }
.navbar-cta:hover { transform: scale(0.97); }

/* === Social Proof === */
.social-proof { padding: var(--g-2xl) var(--pad); text-align: center; }
.social-inner { max-width: 1000px; margin: 0 auto; }
.stats-row { display: flex; justify-content: space-around; gap: var(--g-md); margin-bottom: 60px; flex-wrap: wrap; }
.stat-block { flex: 1; min-width: 200px; padding: 20px; }
.stat-num { font-size: 40px; color: var(--zenBrown); letter-spacing: 2px; margin-bottom: 8px; font-weight: 700; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
.stat-lbl { font-size: 13px; color: var(--zenSubtle); letter-spacing: 1px; }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.testimonial-card { position: relative; padding: 40px 32px 32px; background: var(--zenCard); border: 1px solid var(--zenBorder); border-radius: var(--radius-lg); border-top: 4px solid var(--zenBrown); text-align: left; overflow: hidden; z-index: 1; transition: transform var(--d-comp) var(--ease), box-shadow var(--d-comp) var(--ease); box-shadow: 0 4px 12px rgba(45,42,38,0.03); }
.testimonial-card:hover { transform: translateY(-6px); box-shadow: 0 16px 32px rgba(45,42,38,0.08); }
.testimonial-card::before { content: '“'; position: absolute; top: -10px; left: 24px; font-size: 100px; font-family: Georgia, serif; color: var(--zenBrown); opacity: 0.08; z-index: -1; line-height: 1; }
.testimonial-text { font-size: 14px; color: var(--zenInk); line-height: 1.8; margin-bottom: 24px; min-height: 80px; }
.testimonial-user { display: flex; align-items: center; gap: 12px; border-top: 1px solid rgba(217,210,197,0.4); padding-top: 16px; }
.t-avatar { width: 40px; height: 40px; border-radius: 20px; background: rgba(140,106,67,0.1); color: var(--zenBrown); display: flex; align-items: center; justify-content: center; font-family: 'MaShanZheng', cursive; font-size: 20px; }
.t-info { display: flex; flex-direction: column; }
.t-name { font-size: 13px; color: var(--zenInk); font-weight: 600; }
.t-meta { font-size: 11px; color: var(--zenSubtle); margin-top: 2px; }
@media (max-width: 1024px) { .testimonials-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 767px) { .testimonials-grid { grid-template-columns: 1fr; } }

/* === Footer Legal === */
.footer-legal { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-top: var(--g-sm); }
.footer-legal a { font-size: 11px; color: var(--zenSubtle); opacity: 0.5; transition: opacity var(--d-micro) var(--ease); }
.footer-legal a:hover { opacity: 0.8; }

/* === Reveal Animation === */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity var(--d-reveal) var(--ease), transform var(--d-reveal) var(--ease); }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* === Responsive === */

/* 平板 */
@media (min-width: 768px) and (max-width: 1024px) {
  .hero-title { font-size: 48px; letter-spacing: 12px; }
  .download-title { font-size: 36px; }
}

/* 手机端统一优化 */
@media (max-width: 767px) {
  /* Hero 区域 */
  .hero-logo { width: 64px; height: 64px; border-radius: 16px; margin-bottom: var(--g-lg); }
  .hero-title { font-size: 42px; letter-spacing: 10px; }
  .hero-subtitle { font-size: 14px; letter-spacing: 6px; }
  .hero-tagline { font-size: 12px; letter-spacing: 3px; margin-bottom: var(--g-xl); }
  .hero-content { padding: 0 16px; }

  /* CTA 按钮组 */
  .hero-cta-group { flex-direction: column; gap: 12px; align-items: center; }
  .hero-cta, .hero-cta-primary { width: 100%; max-width: 280px; justify-content: center; padding: 14px 24px; }

  /* Hero 底部引言 */
  .hero-footer { bottom: 24px; }
  .zen-quote-subtle { font-size: 12px; letter-spacing: 5px; }

  /* Emotional Hook */
  .hook-text { font-size: 22px; letter-spacing: 4px; }
  .hook-subtext { font-size: 13px; }

  /* Section 标题 */
  .section-title { font-size: 26px; letter-spacing: 3px; }
  .download-title { font-size: 30px; letter-spacing: 4px; }

  /* 手机框架缩小 */
  .phone-frame { width: 220px; height: 440px; border-radius: 32px; padding: 10px; }
}

/* 超小屏 */
@media (max-width: 375px) {
  .hero-title { font-size: 36px; letter-spacing: 6px; }
  .hero-logo { width: 56px; height: 56px; }
  .phone-frame { width: 200px; height: 400px; }
  .download-title { font-size: 26px; }
}

/* 大桌面 */
@media (min-width: 1024px) {
  .carousel-wrapper { max-width: 1000px; padding: 28px 0; }
  .phone-frame { width: 260px; height: 520px; }
  .carousel-slide.active-slide .phone-frame { transform: scale(1.06); }
  .features, .ai-demo, .download, .social-proof { padding: 90px var(--pad); }
  .hero { min-height: 90vh; }
}

/* ==========================================
   NEW: Features Grid v2 (6 cards)
   ========================================== */
.features-grid-v2 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--g-lg);
  max-width: 1100px;
  margin: 0 auto;
}

.feature-card-v2 {
  background: var(--zenCard);
  border-radius: var(--radius-lg);
  border: 1px solid var(--zenBorder);
  padding: var(--g-lg);
  position: relative;
  overflow: hidden;
  transition: transform var(--d-comp) var(--ease), box-shadow var(--d-comp) var(--ease);
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.feature-card-v2:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(45,42,38,0.08);
}
.feature-card-v2::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--card-accent, var(--zenBrown));
  border-radius: 2px 2px 0 0;
  opacity: 0.6;
}

.feature-card-v2-header {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.feature-card-v2-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  background: rgba(140,106,67,0.05);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.feature-card-v2-icon svg {
  width: 36px;
  height: 36px;
}

.feature-card-v2-title-group {
  flex: 1;
}

.feature-card-v2-title {
  font-size: 20px;
  letter-spacing: 3px;
  color: var(--zenInk);
  margin-bottom: 2px;
  line-height: 1.3;
}

.feature-card-v2-subtitle {
  font-size: 12px;
  color: var(--zenSubtle);
  opacity: 0.7;
  letter-spacing: 1px;
}

.feature-card-v2-desc {
  font-size: 13px;
  color: var(--zenSubtle);
  line-height: 1.7;
  flex: 1;
}

/* Feature tags */
.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.feature-tags span {
  padding: 3px 8px;
  font-size: 11px;
  background: rgba(140,106,67,0.06);
  border: 1px solid rgba(140,106,67,0.1);
  border-radius: 5px;
  color: var(--zenBrown);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

@media (max-width: 1024px) {
  .features-grid-v2 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .features-grid-v2 { grid-template-columns: 1fr; }
}

/* ==========================================
   NEW: AI Response Cards
   ========================================== */
.ai-response-cards {
  display: flex;
  gap: var(--g-md);
  justify-content: center;
  flex-wrap: wrap;
  max-width: 600px;
  margin: var(--g-md) auto var(--g-lg);
}
.ai-response-card {
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--zenBorder);
  background: var(--zenCard);
  min-width: 160px;
  text-align: left;
  transition: transform var(--d-micro) var(--ease);
  cursor: default;
}
.ai-response-card:hover {
  transform: translateY(-2px);
}
.ai-rc-label {
  font-size: 10px;
  letter-spacing: 1px;
  color: var(--zenBrown);
  opacity: 0.7;
  margin-bottom: 4px;
  text-transform: uppercase;
}
.ai-rc-title {
  font-size: 14px;
  color: var(--zenInk);
  font-weight: 600;
  margin-bottom: 2px;
}
.ai-rc-desc {
  font-size: 11px;
  color: var(--zenSubtle);
}
.ai-rc-reading { border-left: 3px solid #5D4F43; }
.ai-rc-practice { border-left: 3px solid var(--zenBrown); }
.ai-rc-event { border-left: 3px solid var(--goldAccent); }