:root {
  --cyan: #0097a7;
  --cyan-dim: #00838f;
  --blue: #1565c0;
  --purple: #5e35b1;
  --bg-0: #fffbf7;
  --bg-1: #ffffff;
  --bg-2: #fff6ee;
  --glass: rgba(255, 255, 255, 0.92);
  --glass-border: rgba(82, 168, 118, 0.14);
  --glass-bright: rgba(82, 168, 118, 0.24);
  --text: #1a2332;
  --text-soft: #4a5568;
  --text-muted: #718096;
  --nav-h: 76px;
  --radius: 18px;
  --radius-lg: 28px;
  --shadow-glow: 0 8px 40px rgba(21, 101, 192, 0.1);
  --shadow-card: 0 4px 24px rgba(26, 35, 50, 0.07);
  --shadow-card-hover: 0 12px 40px rgba(26, 35, 50, 0.12);
  --gradient-brand: linear-gradient(135deg, #1565c0 0%, #0097a7 50%, #2979ff 100%);
  --gradient-hero: linear-gradient(95deg, #f5c518 0%, #7dda8c 100%);
  --macaron-lemon: #ffd93d;
  --macaron-lemon-deep: #e6b800;
  --macaron-mint: #a8e6cf;
  --macaron-green: #6bcb77;
  --macaron-green-deep: #3d9970;
  --macaron-lilac: #e8d5f2;
  --gradient-btn: linear-gradient(135deg, #db8ade 0%, #f6bf9f 100%);
  --gradient-btn-hover: linear-gradient(135deg, #c472d0 0%, #e8a882 100%);
  --shadow-btn: 0 8px 28px rgba(219, 138, 222, 0.35);
  --shadow-btn-hover: 0 12px 36px rgba(219, 138, 222, 0.45);
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg-0);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img, video { display: block; max-width: 100%; }

.container {
  width: min(1240px, calc(100% - 48px));
  margin: 0 auto;
}

/* ===== 背景 ===== */
.scene {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.scene-base {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, #fffefb 0%, #fffbf7 45%, #fff8f0 100%);
}

.scene-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 45% at 18% 20%, rgba(255, 217, 61, 0.16) 0%, transparent 55%),
    radial-gradient(ellipse 60% 50% at 82% 28%, rgba(168, 230, 207, 0.18) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 50% 90%, rgba(232, 213, 242, 0.12) 0%, transparent 50%);
}

.scene-dots {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(107, 203, 119, 0.1) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 40%, #000 15%, transparent 82%);
  opacity: 0.6;
}

@media (prefers-reduced-motion: reduce) {
  .pulse-dot { animation: none !important; }
  .hero-qr-chip,
  .hero-qr-tag { animation: none !important; }
}

/* ===== 导航 ===== */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 200;
  height: var(--nav-h);
  transition: background 0.35s, border-color 0.35s, box-shadow 0.35s;
}

.nav.is-scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px) saturate(1.3);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: 0 4px 24px rgba(26, 35, 50, 0.06);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.04em;
  color: var(--text);
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(21, 101, 192, 0.15);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-size: 0.9rem;
  color: var(--text-soft);
  transition: color 0.2s;
  position: relative;
}

.nav-links a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: var(--blue);
  border-radius: 1px;
  transition: width 0.25s;
}

.nav-links a:not(.nav-cta):hover { color: var(--blue); }
.nav-links a:not(.nav-cta):hover::after { width: 100%; }

.nav-cta {
  padding: 10px 24px;
  border-radius: 999px;
  background: var(--gradient-btn);
  color: #fff !important;
  font-weight: 600;
  box-shadow: var(--shadow-btn);
  transition: transform 0.2s, box-shadow 0.2s, background 0.25s !important;
}

.nav-cta:hover {
  transform: translateY(-1px);
  background: var(--gradient-btn-hover);
  box-shadow: var(--shadow-btn-hover);
}

.menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  background: var(--bg-1);
  cursor: pointer;
  box-shadow: var(--shadow-card);
}

.menu-btn span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: var(--text);
  transition: transform 0.25s, opacity 0.25s;
}

.menu-btn.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-btn.active span:nth-child(2) { opacity: 0; }
.menu-btn.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  padding: calc(var(--nav-h) + 56px) 0 80px;
  display: flex;
  align-items: center;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 64px;
  align-items: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px;
  margin-bottom: 24px;
  border-radius: 999px;
  border: 1px solid rgba(168, 230, 207, 0.65);
  background: rgba(255, 255, 255, 0.75);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--macaron-green-deep);
  text-transform: uppercase;
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--macaron-lemon);
  box-shadow: 0 0 0 3px rgba(255, 217, 61, 0.25);
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

.hero-title {
  margin: 0 0 20px;
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--text);
}

.hero-title .gradient {
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-subtitle {
  margin: 0 0 24px;
  font-size: clamp(1.12rem, 2.2vw, 1.4rem);
  font-weight: 600;
  color: var(--macaron-green-deep);
}

.hero-desc {
  margin: 0 0 36px;
  max-width: 520px;
  font-size: 1.02rem;
  color: var(--text-soft);
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 32px;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 600;
  border: 0;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--gradient-btn);
  color: #fff;
  box-shadow: var(--shadow-btn);
}

.btn-primary:hover {
  background: var(--gradient-btn-hover);
  box-shadow: var(--shadow-btn-hover);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.9);
  color: var(--text);
  border: 1px solid rgba(82, 168, 118, 0.22);
  box-shadow: 0 4px 16px rgba(26, 35, 50, 0.04);
}

.btn-ghost:hover {
  background: #f6fcf8;
  border-color: rgba(82, 168, 118, 0.45);
  color: var(--macaron-green-deep);
}

.hero-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.metric {
  flex: 1;
  min-width: 130px;
  padding: 16px 18px;
  border-radius: 16px;
  background: linear-gradient(145deg, #fffef9, #f4fbf6);
  border: 1px solid rgba(168, 230, 207, 0.45);
  box-shadow: 0 4px 18px rgba(107, 203, 119, 0.08);
}

.metric strong {
  display: block;
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--macaron-green-deep);
  margin-bottom: 4px;
}

.metric strong::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--macaron-lemon);
  vertical-align: middle;
  transform: translateY(-1px);
}

.metric span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Hero 小程序二维码 · 3D 玻璃拟态 */
.hero-qr { position: relative; }

.hero-qr-stack {
  position: relative;
  padding: 28px 12px 36px;
}

.hero-qr-splash {
  position: absolute;
  inset: 6% 4% 10%;
  border-radius: 36px;
  background: linear-gradient(150deg, #ffd93d 0%, #a8e6cf 52%, #e8d5f2 100%);
  box-shadow:
    0 28px 56px rgba(107, 203, 119, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.35);
  transform: rotate(-2deg);
}

.hero-qr-chip {
  position: absolute;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px) saturate(1.3);
  border: 1px solid rgba(255, 255, 255, 0.75);
  box-shadow: 0 12px 28px rgba(26, 35, 50, 0.1);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-soft);
  animation: hero-float 5s ease-in-out infinite;
}

.hero-qr-chip-1 {
  top: 2%;
  left: -2%;
  animation-delay: 0s;
}

.hero-qr-chip-2 {
  top: 18%;
  right: -4%;
  animation-delay: 1.2s;
}

.chip-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 11px;
  font-size: 1rem;
  line-height: 1;
  box-shadow: 0 6px 14px rgba(26, 35, 50, 0.1);
}

.chip-icon-lemon { background: linear-gradient(145deg, #fff3b0, #ffd93d); }
.chip-icon-mint { background: linear-gradient(145deg, #d5f5e3, #6bcb77); }

.hero-qr-card {
  position: relative;
  z-index: 2;
  padding: 14px;
  border-radius: calc(var(--radius-lg) + 6px);
  background: rgba(255, 255, 255, 0.62);
  backdrop-filter: blur(24px) saturate(1.35);
  border: 1px solid rgba(255, 255, 255, 0.78);
  box-shadow:
    0 28px 56px rgba(107, 203, 119, 0.12),
    0 10px 24px rgba(26, 35, 50, 0.05),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.hero-qr-window {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  padding: 4px 6px 0;
}

.hero-qr-dots {
  display: flex;
  gap: 6px;
}

.hero-qr-dots i {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  box-shadow: inset 0 -1px 2px rgba(0, 0, 0, 0.08);
}

.hero-qr-dots i:nth-child(1) { background: #ffb4b4; }
.hero-qr-dots i:nth-child(2) { background: #ffe082; }
.hero-qr-dots i:nth-child(3) { background: #a5d6a7; }

.hero-qr-pill {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 4px 14px rgba(26, 35, 50, 0.06);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-muted);
}

.hero-qr-pill svg { flex-shrink: 0; color: var(--macaron-green); opacity: 0.9; }

.hero-qr-panel {
  padding: 22px 20px 20px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.85);
  box-shadow:
    0 16px 36px rgba(26, 35, 50, 0.07),
    inset 0 1px 0 rgba(255, 255, 255, 0.95);
  text-align: center;
}

.hero-qr-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
  text-align: left;
}

.hero-qr-logo {
  width: 50px;
  height: 50px;
  margin: 0;
  flex-shrink: 0;
  border-radius: 14px;
  box-shadow: 0 8px 22px rgba(107, 203, 119, 0.28);
}

.hero-qr-head-text { min-width: 0; }

.hero-qr-badge {
  display: inline-block;
  margin-bottom: 5px;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--macaron-green-deep);
  background: rgba(168, 230, 207, 0.35);
}

.hero-qr-card h3 {
  margin: 0;
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--text);
  text-align: left;
}

.hero-qr-desc {
  margin: 0 0 18px;
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.65;
  text-align: left;
}

.hero-qr .qr-frame {
  display: inline-block;
  padding: 12px;
  border-radius: 24px;
  background: #fff;
  border: 1px solid rgba(168, 230, 207, 0.45);
  box-shadow:
    0 16px 36px rgba(107, 203, 119, 0.12),
    0 4px 12px rgba(26, 35, 50, 0.04);
}

.hero-qr .qr-frame img {
  display: block;
  width: 168px;
  height: 168px;
  border-radius: 14px;
}

.hero-qr .qr-label {
  margin: 14px 0 0;
  font-size: 0.8rem;
  color: var(--text-soft);
}

.hero-qr-tag {
  position: absolute;
  z-index: 4;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 999px;
  background: linear-gradient(135deg, #ffd93d 0%, #6bcb77 100%);
  box-shadow:
    0 12px 28px rgba(107, 203, 119, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
  font-size: 0.82rem;
  font-weight: 600;
  color: #2d6b4f;
  white-space: nowrap;
  animation: hero-float-tag 4.5s ease-in-out infinite;
  animation-delay: 0.6s;
}

.hero-qr-tag-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 6px rgba(255, 255, 255, 0.8);
}

@keyframes hero-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes hero-float-tag {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-8px); }
}

/* ===== 通用区块 ===== */
section {
  padding: 100px 0;
  position: relative;
}

section:nth-child(even) {
  background: rgba(255, 255, 255, 0.55);
}

.section-divider {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(720px, 85%);
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(21, 101, 192, 0.12), transparent);
}

.section-head {
  text-align: center;
  margin-bottom: 56px;
}

.section-label {
  display: inline-block;
  margin-bottom: 16px;
  padding: 7px 18px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: #c472d0;
  background: linear-gradient(135deg, rgba(219, 138, 222, 0.12), rgba(246, 191, 159, 0.14));
  border: 1px solid rgba(219, 138, 222, 0.2);
}

.section-head h2 {
  margin: 0 0 16px;
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.section-head p {
  margin: 0 auto;
  max-width: 560px;
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* ===== 工作流程 ===== */
.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}

.flow-grid::before {
  content: "";
  position: absolute;
  top: 36px;
  left: 12%;
  right: 12%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(219, 138, 222, 0.18), transparent);
}

.flow-step {
  position: relative;
  text-align: center;
  padding: 32px 20px 28px;
  border-radius: var(--radius);
  background: var(--bg-1);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}

.flow-step:hover {
  border-color: var(--glass-bright);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.flow-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(219, 138, 222, 0.14), rgba(246, 191, 159, 0.12));
  border: 1px solid rgba(219, 138, 222, 0.2);
  font-size: 1.1rem;
  font-weight: 700;
  color: #c472d0;
}

.flow-step h3 {
  margin: 0 0 10px;
  font-size: 1.05rem;
  color: var(--text);
}

.flow-step p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== 功能 Bento ===== */
.bento {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: 20px;
}

.bento-card {
  padding: 32px;
  border-radius: var(--radius-lg);
  background: var(--bg-1);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}

.bento-card:hover {
  border-color: var(--glass-bright);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
}

.bento-card.span-2 { grid-column: span 2; }

.bento-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(21, 101, 192, 0.08), rgba(41, 121, 255, 0.06));
  border: 1px solid rgba(21, 101, 192, 0.12);
  color: var(--blue);
}

.bento-icon svg {
  width: 24px;
  height: 24px;
}

.bento-card h3 {
  margin: 0 0 10px;
  font-size: 1.15rem;
  color: var(--text);
}

.bento-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.75;
}

.bento-highlight {
  background: linear-gradient(145deg, #f0f6ff, #ffffff);
  border-color: rgba(21, 101, 192, 0.18);
}

/* ===== 演示视频 ===== */
.demo-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card-hover);
  background: #000;
}

.demo-wrap video {
  width: 100%;
  display: block;
}

.demo-caption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 18px 24px;
  background: var(--bg-1);
  border-top: 1px solid var(--glass-border);
  font-size: 0.88rem;
  color: var(--text-muted);
}

.demo-caption strong { color: var(--blue); }

/* ===== 安装 ===== */
.install-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.install-card {
  padding: 32px 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-1);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.install-card:hover {
  border-color: var(--glass-bright);
  box-shadow: var(--shadow-card-hover);
}

.install-tag {
  display: inline-block;
  margin-bottom: 16px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.install-tag.green { background: #e8f5e9; color: #2e7d32; }
.install-tag.orange { background: #fff3e0; color: #e65100; }
.install-tag.yellow { background: #fff8e1; color: #f57f17; }

.install-card h3 {
  margin: 0 0 14px;
  font-size: 1.1rem;
  color: var(--text);
}

.install-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-soft);
  line-height: 1.8;
}

/* ===== 下载 CTA ===== */
.download-section {
  padding-bottom: 120px;
}

.download-panel {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 56px;
  border-radius: calc(var(--radius-lg) + 4px);
  background: linear-gradient(145deg, #f0f6ff, #ffffff);
  border: 1px solid rgba(21, 101, 192, 0.15);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.download-panel::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(21, 101, 192, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.download-info h2 {
  margin: 0 0 16px;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  color: var(--text);
}

.download-info p {
  margin: 0 0 32px;
  color: var(--text-soft);
  font-size: 1rem;
  line-height: 1.8;
}

.download-meta {
  margin-top: 14px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.download-panel-single {
  grid-template-columns: 1fr;
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.download-logo {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 16px;
  box-shadow: 0 6px 20px rgba(21, 101, 192, 0.15);
}

.download-panel-single .download-info p {
  margin-left: auto;
  margin-right: auto;
}

.qr-panel { text-align: center; }

.qr-frame {
  display: inline-block;
  padding: 14px;
  border-radius: 20px;
  background: #fff;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
}

.qr-frame img {
  width: 180px;
  height: 180px;
}

.qr-label {
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--text-soft);
}

/* ===== 页脚 ===== */
.footer {
  padding: 48px 0;
  border-top: 1px solid var(--glass-border);
  background: var(--bg-1);
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 12px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
}

.footer-brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.footer p {
  margin: 6px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer a {
  color: var(--text-muted);
  transition: color 0.2s;
}

.footer a:hover { color: var(--blue); }

/* ===== 动画 ===== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero-layout { grid-template-columns: 1fr; gap: 40px; }
  .hero-copy { text-align: left; }
  .hero-qr { max-width: 400px; margin: 0 auto; }
  .hero-qr-chip-1 { left: 0; }
  .hero-qr-chip-2 { right: 0; }
  .flow-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-grid::before { display: none; }
  .bento { grid-template-columns: 1fr; }
  .bento-card.span-2 { grid-column: span 1; }
  .install-grid { grid-template-columns: 1fr; }
  .download-panel { grid-template-columns: 1fr; padding: 40px 28px; text-align: center; }
  .hero-actions { justify-content: flex-start; }
  .hero-metrics { justify-content: flex-start; }
}

@media (max-width: 768px) {
  .menu-btn { display: block; }

  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    padding: 24px;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 8px 32px rgba(26, 35, 50, 0.08);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s, opacity 0.3s;
    gap: 20px;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .flow-grid { grid-template-columns: 1fr; }
  section { padding: 72px 0; }
  .hero { min-height: auto; }
}

@media (max-width: 480px) {
  .container { width: calc(100% - 32px); }
  .hero-title { font-size: clamp(2.2rem, 10vw, 2.8rem); }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .hero-metrics {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .metric {
    min-width: 0;
    padding: 14px 16px;
  }
  .metric strong { font-size: 1.05rem; }
  .metric strong::before { display: none; }
  .metric span { font-size: 0.78rem; line-height: 1.4; }
  .hero-qr-chip { display: none; }
  .hero-qr-stack { padding: 16px 0 30px; }
  .hero-qr-splash { transform: rotate(-1deg); border-radius: 28px; }
  .hero-qr-pill { padding: 8px 12px; }
  .hero-qr-pill span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .hero-qr-tag { font-size: 0.76rem; padding: 10px 16px; }
}