/* ============================================
   听写小本子 Landing Page — "Fresh Green"
   Premium mini-program aesthetic
   ============================================ */

/* --- Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800;900&family=Noto+Sans+SC:wght@400;500;600;700;900&display=swap');

/* --- Tokens --- */
:root {
  --c-primary: #43A047;
  --c-primary-light: #81C784;
  --c-primary-dim: #2E7D32;
  --c-primary-container: #E8F5E9;
  --c-secondary: #006d36;
  --c-secondary-container: #b4f5c8;
  --c-tertiary: #815200;
  --c-tertiary-container: #ffddb6;
  --c-error: #ba1a1a;
  --c-surface: #f8f9fc;
  --c-card: #ffffff;
  --c-text: #191c1e;
  --c-text-2: #414754;
  --c-text-3: #727785;
  --c-text-4: #a0a5b4;
  --c-outline: #c2c6d6;
  --c-divider: rgba(194, 198, 214, 0.18);

  --grad-hero: linear-gradient(160deg, #2E7D32 0%, #43A047 40%, #81C784 100%);
  --grad-cta: linear-gradient(180deg, #66BB6A 0%, #43A047 100%);
  --grad-green: linear-gradient(135deg, #00c851, #006d36);

  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-xl: 32px;
  --r-full: 9999px;

  --shadow-xs: 0 1px 3px rgba(25,28,30,0.04);
  --shadow-sm: 0 2px 12px rgba(25,28,30,0.05);
  --shadow-md: 0 4px 24px rgba(25,28,30,0.07);
  --shadow-lg: 0 8px 40px rgba(67,160,71,0.12);
  --shadow-xl: 0 16px 64px rgba(67,160,71,0.16);

  --font: 'Outfit', 'Noto Sans SC', system-ui, sans-serif;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --- Reset --- */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
body{font-family:var(--font);color:var(--c-text);background:var(--c-surface);line-height:1.6;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
button{font-family:inherit}

.container{width:100%;max-width:1180px;margin:0 auto;padding:0 28px}

/* Grain texture */
body::after{content:'';position:fixed;inset:0;pointer-events:none;z-index:9999;opacity:0.022;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");background-repeat:repeat;background-size:200px}

/* ============================================
   NAV
   ============================================ */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;padding:0 28px;transition:all .4s var(--ease-out)}
.nav::before{content:'';position:absolute;inset:0;background:#fff;border-bottom:1px solid var(--c-divider);box-shadow:0 1px 12px rgba(0,0,0,0.06);opacity:0;transition:opacity .4s var(--ease-out)}
.nav.scrolled::before{opacity:1}

.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px;max-width:1180px;margin:0 auto;position:relative;z-index:1}

.nav-logo{display:flex;align-items:center;gap:10px;font-family:var(--font);font-size:20px;font-weight:800;color:var(--c-primary);letter-spacing:-.02em}
.nav-logo svg,.nav-logo img{width:38px;height:38px;flex-shrink:0;border-radius:8px;filter:drop-shadow(0 2px 8px rgba(67,160,71,0.2))}

.nav-links{display:flex;align-items:center;gap:8px}
.nav-link{font-size:14px;font-weight:600;color:var(--c-text-2);padding:8px 18px;border-radius:var(--r-full);transition:all .25s var(--ease-out)}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-container)}

.nav-cta{display:inline-flex;align-items:center;gap:8px;background:var(--grad-cta);color:#fff;padding:10px 24px;border-radius:var(--r-full);font-size:14px;font-weight:700;border:none;cursor:pointer;transition:all .3s var(--ease-out);box-shadow:0 2px 12px rgba(67,160,71,0.3),inset 0 1px 0 rgba(255,255,255,0.15);margin-left:8px}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 4px 20px rgba(67,160,71,0.4),inset 0 1px 0 rgba(255,255,255,0.15)}
.nav-cta svg{width:16px;height:16px}

.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;color:var(--c-text);border-radius:var(--r-sm);transition:background .2s}
.nav-toggle:hover{background:rgba(0,0,0,0.04)}
.nav-toggle svg{width:24px;height:24px}

.nav-mobile-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.3);z-index:998;opacity:0;transition:opacity .3s}
.nav-mobile-overlay.open{opacity:1}

.nav-mobile-menu{display:none;position:fixed;top:0;right:0;width:280px;height:100vh;background:var(--c-card);z-index:999;padding:80px 28px 28px;transform:translateX(100%);transition:transform .35s var(--ease-out);box-shadow:-8px 0 40px rgba(0,0,0,0.08)}
.nav-mobile-menu.open{transform:translateX(0)}
.nav-mobile-menu a{display:block;font-size:17px;font-weight:600;color:var(--c-text);padding:16px 0;border-bottom:1px solid var(--c-divider)}
.nav-mobile-menu .mobile-cta{display:flex;align-items:center;justify-content:center;gap:8px;background:var(--grad-cta);color:#fff;padding:16px;border-radius:var(--r-md);font-weight:700;margin-top:24px;border:none}

/* ============================================
   HERO
   ============================================ */
.hero{position:relative;padding:160px 0 80px;overflow:hidden}

.hero-bg{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.hero-blob{position:absolute;border-radius:50%;filter:blur(80px);opacity:.5}
.hero-blob-1{width:600px;height:600px;top:-150px;right:-100px;background:radial-gradient(circle,rgba(67,160,71,0.12),transparent 70%)}
.hero-blob-2{width:400px;height:400px;bottom:-80px;left:-80px;background:radial-gradient(circle,rgba(129,199,132,0.08),transparent 70%)}
.hero-blob-3{width:300px;height:300px;top:30%;left:40%;background:radial-gradient(circle,rgba(46,125,50,0.06),transparent 70%)}

.hero-inner{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;position:relative;z-index:1}

.hero-badge{display:inline-flex;align-items:center;gap:8px;background:var(--c-primary-container);color:var(--c-primary-dim);font-size:13px;font-weight:700;padding:7px 16px 7px 12px;border-radius:var(--r-full);margin-bottom:28px;letter-spacing:.01em}
.hero-badge-dot{width:8px;height:8px;background:var(--c-primary);border-radius:50%;animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.85)}}

.hero-title{font-family:var(--font);font-size:clamp(38px,5.5vw,60px);font-weight:900;line-height:1.1;letter-spacing:-.03em;margin-bottom:24px}
.hero-title-gradient{background:var(--grad-hero);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

.hero-desc{font-size:17px;color:var(--c-text-2);line-height:1.8;max-width:460px;margin-bottom:40px}

.hero-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}

/* Buttons */
.btn-primary{display:inline-flex;align-items:center;gap:10px;background:var(--grad-cta);color:#fff;padding:16px 32px;border-radius:var(--r-full);font-size:16px;font-weight:700;border:none;cursor:pointer;transition:all .3s var(--ease-out);box-shadow:0 4px 20px rgba(67,160,71,0.3),inset 0 1px 0 rgba(255,255,255,0.15);position:relative;overflow:hidden}
.btn-primary::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,0.12),transparent);pointer-events:none}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(67,160,71,0.4),inset 0 1px 0 rgba(255,255,255,0.15)}
.btn-primary:active{transform:translateY(0)}
.btn-primary svg{width:20px;height:20px;position:relative;z-index:1}
.btn-primary span{position:relative;z-index:1}

.btn-ghost{display:inline-flex;align-items:center;gap:8px;padding:16px 28px;border-radius:var(--r-full);font-size:16px;font-weight:600;color:var(--c-text-2);background:var(--c-card);border:1.5px solid rgba(194,198,214,0.4);cursor:pointer;transition:all .3s var(--ease-out);box-shadow:var(--shadow-xs)}
.btn-ghost:hover{color:var(--c-primary);border-color:var(--c-primary-container);background:var(--c-primary-container);box-shadow:var(--shadow-sm)}

/* Stats */
.hero-stats{display:flex;gap:40px;margin-top:52px;padding-top:32px;position:relative}
.hero-stats::before{content:'';position:absolute;top:0;left:0;width:120px;height:2px;background:var(--grad-cta);border-radius:2px}
.hero-stat{display:flex;flex-wrap:wrap;align-items:baseline;gap:2px}
.hero-stat-value{font-family:var(--font);font-size:30px;font-weight:800;color:var(--c-primary);letter-spacing:-.02em}
.hero-stat-text{font-size:30px}
.hero-stat-unit{font-size:16px;font-weight:700;color:var(--c-primary);margin-left:2px}
.hero-stat-label{width:100%;font-size:13px;color:var(--c-text-3);margin-top:2px;font-weight:500}

/* Phone mockup */
.hero-visual{position:relative;display:flex;justify-content:center;align-items:center;min-height:520px}

.phone{position:relative;width:260px;height:520px;background:#1a1a2e;border-radius:36px;box-shadow:0 0 0 2px rgba(255,255,255,0.1),0 20px 60px rgba(67,160,71,0.2),0 0 0 12px rgba(67,160,71,0.04);overflow:hidden;transform:perspective(1000px) rotateY(-6deg) rotateX(3deg);transition:transform .6s var(--ease-out)}
.phone:hover{transform:perspective(1000px) rotateY(-2deg) rotateX(1deg)}

.phone-notch{position:absolute;top:8px;left:50%;transform:translateX(-50%);width:100px;height:28px;background:#1a1a2e;border-radius:0 0 16px 16px;z-index:10}

.phone-screen{position:absolute;inset:4px;border-radius:32px;overflow:hidden;display:flex;flex-direction:column;color:#fff}

/* Mini-program homepage mockup */
.phone-screen-mp{background:#F2F7F0;padding:0}

.mp-hero{background:linear-gradient(145deg,#2E7D32,#43A047,#66BB6A,#81C784);padding:36px 14px 16px;border-radius:0 0 24px 24px;position:relative;overflow:hidden}
.mp-hero-circle{position:absolute;border-radius:50%}
.mp-c1{top:-20px;right:-14px;width:80px;height:80px;background:rgba(255,255,255,0.08)}
.mp-c2{bottom:-14px;left:-20px;width:60px;height:60px;background:rgba(255,255,255,0.06)}

.mp-hero-row{display:flex;align-items:center;gap:10px;position:relative;z-index:1}
.mp-avatar{width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,0.2);border:2px solid rgba(255,255,255,0.3);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.mp-hero-info{flex:1}
.mp-greeting{font-size:9px;color:rgba(255,255,255,0.8);display:block}
.mp-title{font-size:16px;font-weight:800;color:#fff;letter-spacing:2px;display:block;margin-top:1px}

.mp-badges{display:flex;gap:6px;margin-top:10px;position:relative;z-index:1}
.mp-badge{font-size:9px;font-weight:600;color:#fff;background:rgba(255,255,255,0.18);border:1px solid rgba(255,255,255,0.25);border-radius:9999px;padding:3px 10px}

/* Subject cards */
.mp-cards{display:flex;gap:8px;padding:12px 10px 0}
.mp-subject-card{flex:1;border-radius:16px;padding:14px 8px 10px;display:flex;flex-direction:column;align-items:center;gap:2px;border:1.5px solid rgba(255,255,255,0.5);box-shadow:0 4px 12px rgba(0,0,0,0.08)}
.mp-card-cn{background:linear-gradient(150deg,#388E3C,#43A047,#66BB6A)}
.mp-card-en{background:linear-gradient(150deg,#1565C0,#1976D2,#42A5F5)}
.mp-card-emoji{font-size:28px}
.mp-card-title{font-size:12px;font-weight:800;color:#fff;letter-spacing:1px}
.mp-card-sub{font-size:8px;color:rgba(255,255,255,0.8)}
.mp-card-arrow{font-size:9px;font-weight:600;color:#fff;background:rgba(255,255,255,0.25);border-radius:9999px;padding:2px 10px;margin-top:4px}

/* Quiz entry */
.mp-quiz{display:flex;align-items:center;gap:8px;margin:8px 10px 0;padding:10px 12px;border-radius:14px;background:linear-gradient(135deg,#FFF8E1,#FFECB3);border:1.5px solid #FFE082}
.mp-quiz-icon{font-size:22px}
.mp-quiz-text{flex:1}
.mp-quiz-title{display:block;font-size:11px;font-weight:700;color:#333}
.mp-quiz-sub{display:block;font-size:8px;color:#888;margin-top:1px}
.mp-quiz-go{font-size:18px;font-weight:700;color:#F9A825}

/* Daily progress */
.mp-progress{margin:8px 10px 14px;padding:10px 12px;border-radius:14px;background:#fff;border:1.5px solid #E8F5E9}
.mp-progress-header{display:flex;justify-content:space-between;font-size:10px;font-weight:600;color:#333;margin-bottom:6px}
.mp-progress-count{color:#2E7D32}
.mp-progress-bar{height:8px;border-radius:4px;background:#E8F5E9;overflow:hidden}
.mp-progress-fill{height:100%;border-radius:4px;background:linear-gradient(90deg,#81C784,#43A047,#2E7D32)}

/* Floating cards */
.float-card{position:absolute;background:var(--c-card);border-radius:var(--r-md);padding:14px 18px;box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:12px;z-index:5;border:1px solid rgba(255,255,255,0.8)}
.float-card-1{top:40px;right:-20px;animation:floatA 7s var(--ease-out) infinite}
.float-card-2{bottom:60px;left:-30px;animation:floatB 8s var(--ease-out) infinite}
@keyframes floatA{0%,100%{transform:translateY(0) rotate(0deg)}50%{transform:translateY(-12px) rotate(1deg)}}
@keyframes floatB{0%,100%{transform:translateY(0) rotate(0deg)}50%{transform:translateY(-10px) rotate(-1deg)}}

.float-icon{width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.float-icon.green{background:#e8faf0;color:var(--c-secondary)}
.float-icon.orange{background:#fff4e0;color:var(--c-tertiary)}
.float-icon.purple{background:var(--c-primary-container);color:var(--c-primary)}
.float-icon svg{width:20px;height:20px}
.float-label{font-size:13px;font-weight:700;color:var(--c-text);line-height:1.3}
.float-sub{font-size:11px;color:var(--c-text-3);font-weight:500;margin-top:1px}

/* ============================================
   TRUST BAR
   ============================================ */
.trust-bar{padding:40px 0 20px}
.trust-inner{display:flex;justify-content:center;gap:40px;flex-wrap:wrap}
.trust-item{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--c-text-3)}
.trust-item svg{width:18px;height:18px;color:var(--c-primary);flex-shrink:0}

/* ============================================
   SECTION COMMON
   ============================================ */
.section-header{text-align:center;margin-bottom:64px}
.section-tag{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--c-primary);background:var(--c-primary-container);padding:6px 16px;border-radius:var(--r-full);margin-bottom:20px}
.section-tag svg{width:14px;height:14px}
.section-title{font-family:var(--font);font-size:clamp(28px,4.5vw,44px);font-weight:800;line-height:1.2;color:var(--c-text);margin-bottom:16px;letter-spacing:-.02em}
.section-desc{font-size:16px;color:var(--c-text-2);max-width:520px;margin:0 auto;line-height:1.8}

/* ============================================
   FEATURES
   ============================================ */
.features{padding:90px 0 110px;position:relative}
.features::before{content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);width:100%;max-width:900px;height:1px;background:linear-gradient(90deg,transparent,var(--c-outline),transparent);opacity:.3}

.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}

.feature-card{background:var(--c-card);border-radius:var(--r-lg);padding:32px 28px;box-shadow:var(--shadow-sm);transition:all .4s var(--ease-out);border:1px solid rgba(194,198,214,0.12);position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;border-radius:3px 3px 0 0;opacity:0;transition:opacity .4s}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.feature-card:hover::before{opacity:1}
.feature-card:nth-child(1)::before{background:var(--grad-cta)}
.feature-card:nth-child(2)::before{background:linear-gradient(135deg,#43A047,#2E7D32)}
.feature-card:nth-child(3)::before{background:var(--grad-green)}
.feature-card:nth-child(4)::before{background:linear-gradient(135deg,#ffb020,#815200)}
.feature-card:nth-child(5)::before{background:linear-gradient(135deg,#ff6090,#e91e63)}
.feature-card:nth-child(6)::before{background:linear-gradient(135deg,#26c6da,#00838f)}

.feature-icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.feature-icon svg{width:24px;height:24px}
.feature-icon.blue{background:var(--c-primary-container);color:var(--c-primary)}
.feature-icon.green{background:#e8faf0;color:var(--c-secondary)}
.feature-icon.orange{background:#fff4e0;color:var(--c-tertiary)}
.feature-icon.purple{background:#E8F5E9;color:#2E7D32}
.feature-icon.pink{background:#fce4ec;color:#c62828}
.feature-icon.teal{background:#e0f7fa;color:#00838f}

.feature-card h3{font-family:var(--font);font-size:18px;font-weight:700;margin-bottom:8px;letter-spacing:-.01em}
.feature-card p{font-size:14px;color:var(--c-text-2);line-height:1.75}

/* ============================================
   HOW IT WORKS
   ============================================ */
.how{padding:110px 0;background:var(--c-card);position:relative}
.how::before,.how::after{content:'';position:absolute;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--c-outline),transparent);opacity:.2}
.how::before{top:0}
.how::after{bottom:0}

.steps-wrapper{position:relative}
.steps-line{position:absolute;top:44px;left:16%;right:16%;height:2px;background:linear-gradient(90deg,var(--c-primary-container),var(--c-secondary-container),#e8faf0);border-radius:2px;z-index:0}

.steps-container{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;z-index:1}
.steps-container.steps-3{grid-template-columns:repeat(3,1fr)}

.step{text-align:center}
.step-circle{width:88px;height:88px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;margin:0 auto 20px;font-family:var(--font);transition:all .4s var(--ease-out);box-shadow:var(--shadow-sm);border:3px solid var(--c-card)}
.step:hover .step-circle{transform:scale(1.08);box-shadow:var(--shadow-md)}

.step-blue{background:var(--c-primary-container);color:var(--c-primary)}
.step-green{background:#e8faf0;color:var(--c-secondary)}
.step-orange{background:var(--c-tertiary-container);color:var(--c-tertiary)}
.step-purple{background:#E8F5E9;color:#2E7D32}

.step-circle svg{width:32px;height:32px}
.step-num{font-size:11px;font-weight:800;margin-top:4px;opacity:.6}

.step h3{font-family:var(--font);font-size:17px;font-weight:700;margin-bottom:8px;letter-spacing:-.01em}
.step p{font-size:13px;color:var(--c-text-2);line-height:1.7;max-width:240px;margin:0 auto}

/* ============================================
   SHOWCASE
   ============================================ */
.showcase{padding:110px 0}
.showcase-block{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.showcase-block+.showcase-block{margin-top:100px}
.showcase-block.reverse{direction:rtl}
.showcase-block.reverse>*{direction:ltr}

.showcase-text .section-tag{margin-bottom:16px}
.showcase-text .section-title{font-size:clamp(26px,4vw,38px);text-align:left;margin-bottom:16px}
.showcase-text .section-desc{margin:0;text-align:left}

.showcase-list{list-style:none;margin-top:24px;display:flex;flex-direction:column;gap:12px}
.showcase-list li{display:flex;align-items:center;gap:10px;font-size:14px;font-weight:500;color:var(--c-text-2)}
.showcase-list li svg{width:18px;height:18px;color:var(--c-secondary);flex-shrink:0}

/* Visual panel */
.showcase-visual{background:var(--c-card);border-radius:var(--r-xl);padding:48px;box-shadow:var(--shadow-md);border:1px solid rgba(194,198,214,0.1);display:flex;flex-direction:column;align-items:center}

/* Camera demo */
.camera-demo{display:flex;flex-direction:column;align-items:center;gap:20px;width:100%}

.camera-frame{position:relative;width:260px;height:100px;display:flex;align-items:center;justify-content:center;gap:8px;padding:20px}

.camera-corner{position:absolute;width:20px;height:20px;border-color:var(--c-primary);border-style:solid}
.camera-corner-tl{top:0;left:0;border-width:3px 0 0 3px;border-radius:6px 0 0 0}
.camera-corner-tr{top:0;right:0;border-width:3px 3px 0 0;border-radius:0 6px 0 0}
.camera-corner-bl{bottom:0;left:0;border-width:0 0 3px 3px;border-radius:0 0 0 6px}
.camera-corner-br{bottom:0;right:0;border-width:0 3px 3px 0;border-radius:0 0 6px 0}

.camera-chars{display:flex;gap:12px}
.camera-char{font-size:36px;font-weight:700;font-family:'KaiTi','STKaiti','FangSong',serif;padding:4px 8px;border-radius:8px;transition:all .3s}
.camera-char.correct{color:var(--c-secondary);background:rgba(0,109,54,0.08)}
.camera-char.wrong{color:var(--c-error);background:rgba(186,26,26,0.08);text-decoration:line-through;text-decoration-thickness:2px}

.camera-result{display:flex;align-items:center;gap:16px;font-size:14px;color:var(--c-text-2)}
.camera-result-score{font-weight:600}
.camera-result-score strong{color:var(--c-primary);font-size:18px}
.camera-result-detail{color:var(--c-text-3);font-size:13px}

/* Voice demo */
.voice-demo{display:flex;flex-direction:column;align-items:center;gap:24px;width:100%}

.voice-wave-container{display:flex;align-items:center;gap:6px;height:60px}
.voice-wave{width:6px;border-radius:3px;background:var(--c-primary);animation:waveAnim 1.2s ease-in-out infinite}
.voice-wave:nth-child(1){height:20px;animation-delay:0s}
.voice-wave:nth-child(2){height:35px;animation-delay:0.1s}
.voice-wave:nth-child(3){height:50px;animation-delay:0.2s}
.voice-wave:nth-child(4){height:60px;animation-delay:0.3s}
.voice-wave:nth-child(5){height:50px;animation-delay:0.4s}
.voice-wave:nth-child(6){height:35px;animation-delay:0.5s}
.voice-wave:nth-child(7){height:20px;animation-delay:0.6s}

@keyframes waveAnim{
  0%,100%{transform:scaleY(0.4);opacity:0.4}
  50%{transform:scaleY(1);opacity:1}
}

.voice-word{font-size:48px;font-weight:800;color:var(--c-text);font-family:'KaiTi','STKaiti','FangSong',serif;letter-spacing:16px}

.voice-controls{display:flex;align-items:center;gap:16px}
.voice-btn{width:48px;height:48px;border-radius:50%;border:2px solid var(--c-outline);background:var(--c-card);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .3s var(--ease-out);color:var(--c-text-2)}
.voice-btn:hover{border-color:var(--c-primary);color:var(--c-primary)}
.voice-btn svg{width:20px;height:20px}
.voice-btn-play{width:56px;height:56px;background:var(--grad-cta);border:none;color:#fff;box-shadow:0 4px 16px rgba(67,160,71,0.3)}
.voice-btn-play:hover{transform:scale(1.06);box-shadow:0 6px 24px rgba(67,160,71,0.4)}
.voice-btn-play svg{width:22px;height:22px}

/* ============================================
   TESTIMONIALS
   ============================================ */
.testimonials{padding:110px 0;background:var(--c-card)}
.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}

.testimonial-card{background:var(--c-surface);border-radius:var(--r-lg);padding:32px 28px;transition:all .4s var(--ease-out)}
.testimonial-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}

.testimonial-stars{display:flex;gap:2px;margin-bottom:16px}
.testimonial-text{font-size:15px;color:var(--c-text-2);line-height:1.8;margin-bottom:24px;font-style:italic}
.testimonial-author{display:flex;align-items:center;gap:12px}
.testimonial-avatar{width:40px;height:40px;border-radius:50%;background:var(--grad-cta);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;flex-shrink:0}
.testimonial-name{font-size:14px;font-weight:700;color:var(--c-text)}
.testimonial-role{font-size:12px;color:var(--c-text-3);margin-top:1px}

/* ============================================
   SCAN / DOWNLOAD CTA
   ============================================ */
.download{padding:40px 0;background:var(--c-surface)}
.download-card{background:var(--grad-hero);border-radius:var(--r-xl);padding:48px 32px 40px;text-align:center;color:#fff;position:relative;overflow:hidden}

.download-card::before{content:'';position:absolute;width:350px;height:350px;top:-120px;right:-80px;background:radial-gradient(circle,rgba(255,255,255,0.08),transparent 70%);border-radius:50%;pointer-events:none}
.download-card::after{content:'';position:absolute;width:200px;height:200px;bottom:-60px;left:-40px;background:radial-gradient(circle,rgba(255,255,255,0.06),transparent 70%);border-radius:50%;pointer-events:none}

.download-card h2{font-family:var(--font);font-size:clamp(22px,3.5vw,32px);font-weight:800;margin-bottom:8px;letter-spacing:-.02em;position:relative;z-index:1}
.download-card>p{font-size:14px;opacity:.8;max-width:420px;margin:0 auto 28px;line-height:1.6;position:relative;z-index:1}

/* QR Code Section */
.qr-section{display:flex;flex-direction:column;align-items:center;gap:16px;position:relative;z-index:1;margin-bottom:24px}

.qr-code{background:white;border-radius:20px;padding:16px;box-shadow:0 8px 32px rgba(0,0,0,0.15);transition:transform .3s var(--ease-out)}
.qr-code:hover{transform:scale(1.03)}

.qr-hint{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;opacity:.85}
.qr-hint-icon{width:24px;height:24px;display:flex;align-items:center;justify-content:center}
.qr-hint-icon svg{width:20px;height:20px}

.scan-alt{position:relative;z-index:1;margin-bottom:16px}
.scan-alt p{font-size:13px;opacity:.6;margin-bottom:8px}

.search-tag{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,0.15);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,0.2);padding:10px 24px;border-radius:var(--r-full);font-size:15px;font-weight:700;letter-spacing:.02em}

.download-note{margin-top:12px;font-size:11px;opacity:.45;position:relative;z-index:1}

/* ============================================
   FOOTER
   ============================================ */
.footer{padding:52px 0 36px;text-align:center}
.footer-logo{display:inline-flex;align-items:center;gap:8px;font-family:var(--font);font-size:18px;font-weight:800;color:var(--c-primary);margin-bottom:20px}
.footer-logo svg,.footer-logo img{width:28px;height:28px;border-radius:6px}

.footer-links{display:flex;justify-content:center;gap:28px;margin-bottom:20px}
.footer-links a{font-size:13px;font-weight:600;color:var(--c-text-2);transition:color .2s}
.footer-links a:hover{color:var(--c-primary)}

.footer-copy{font-size:13px;color:var(--c-text-3)}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.reveal{opacity:0;transform:translateY(32px);transition:opacity .7s var(--ease-out),transform .7s var(--ease-out)}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-delay-1{transition-delay:.1s}
.reveal-delay-2{transition-delay:.2s}
.reveal-delay-3{transition-delay:.3s}
.reveal-delay-4{transition-delay:.35s}

.stagger-children .reveal:nth-child(1){transition-delay:0s}
.stagger-children .reveal:nth-child(2){transition-delay:.08s}
.stagger-children .reveal:nth-child(3){transition-delay:.16s}
.stagger-children .reveal:nth-child(4){transition-delay:.24s}
.stagger-children .reveal:nth-child(5){transition-delay:.32s}
.stagger-children .reveal:nth-child(6){transition-delay:.4s}

/* ============================================
   RESPONSIVE
   ============================================ */
@media(max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:48px;text-align:center}
  .hero-visual{order:-1;min-height:420px}
  .hero-desc{max-width:100%;margin-left:auto;margin-right:auto}
  .hero-actions{justify-content:center}
  .hero-stats{justify-content:center}
  .hero-stats::before{left:50%;transform:translateX(-50%)}

  .features-grid{grid-template-columns:repeat(2,1fr)}
  .steps-container,.steps-container.steps-3{grid-template-columns:repeat(2,1fr);gap:40px}
  .steps-line{display:none}

  .showcase-block,.showcase-block.reverse{grid-template-columns:1fr;direction:ltr;gap:40px}
  .showcase-text .section-title,.showcase-text .section-desc{text-align:center}
  .showcase-text{text-align:center}
  .showcase-list{align-items:center}

  .testimonials-grid{grid-template-columns:1fr;max-width:520px;margin:0 auto}
}

@media(max-width:768px){
  .nav-links{display:none}
  .nav-toggle{display:block}
  .nav-mobile-overlay,.nav-mobile-menu{display:block}

  .hero{padding:120px 0 60px}
  .phone{width:220px;height:440px;border-radius:30px}
  .phone-screen{inset:3px;border-radius:27px}
  .phone-notch{width:80px;height:22px}
  .float-card{display:none}

  .features,.how,.showcase,.testimonials{padding:80px 0}
  .download{padding:0 0 40px}
  .download-card{padding:32px 16px 28px}

  .trust-inner{gap:20px}
  .trust-item{font-size:12px}

  .camera-frame{width:220px}
  .camera-char{font-size:28px}
  .voice-word{font-size:36px;letter-spacing:12px}
}

@media(max-width:640px){
  .container{padding:0 20px}
  .features-grid{grid-template-columns:1fr}
  .steps-container,.steps-container.steps-3{grid-template-columns:1fr;gap:28px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .btn-primary,.btn-ghost{justify-content:center}
  .hero-stats{flex-direction:column;gap:16px;align-items:center}
  .showcase-visual{padding:32px 20px}
  .trust-inner{flex-direction:column;align-items:center;gap:12px}
  .camera-frame{width:100%}
  .voice-word{font-size:28px;letter-spacing:8px}
}