:root {
  --bg: #F1F5F9;
  --surface: rgba(255, 255, 255, 0.25);
  --surface-hover: rgba(255, 255, 255, 0.45);
  --text: #0F172A;
  --text-muted: #475569;
  --border: rgba(255, 255, 255, 0.6);
  --border-highlight: rgba(255, 255, 255, 1);
  
  /* 更高饱和度、更鲜艳的强调色 */
  --accent-blue: #0EA5E9;
  --accent-cyan: #06B6D4;
  --accent-purple: #8B5CF6;
  --accent-pink: #EC4899;
  --accent-orange: #F97316;
  
  --yellow-glass: rgba(250, 204, 21, 0.7);
  --blue-glass: rgba(14, 165, 233, 0.7);
  --green-glass: rgba(16, 185, 129, 0.7);

  /* 更锐利的阴影和边缘光 */
  --shadow-glass: 0 12px 40px rgba(15, 23, 42, 0.08);
  --shadow-float: 0 20px 60px rgba(15, 23, 42, 0.12);
  --shadow-inner: inset 0 0 0 1.5px var(--border), inset 0 2px 10px rgba(255,255,255,0.7);

  --cursor-x: 50vw;
  --cursor-y: 34vh;
  --ambient-x: 0px;
  --ambient-y: 0px;
  --tilt-x: 0;
  --tilt-y: 0;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* 顶级科技感：高级珍珠白底色 + 克制的点阵网格 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -3;
  background-color: #FAFAFA;
  background-image: 
    radial-gradient(at 0% 0%, hsla(210, 100%, 95%, 1) 0px, transparent 50%),
    radial-gradient(at 100% 0%, hsla(250, 100%, 95%, 1) 0px, transparent 50%);
}

/* 细腻的点阵 (Dot Grid) 替代突兀的线条网格 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image: radial-gradient(#CBD5E1 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: radial-gradient(ellipse at center, black 10%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 10%, transparent 70%);
  pointer-events: none;
}

/* 高级柔和的流光网纹背景 (类似 Linear 的流光效果) */
.background-mesh {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: 
    radial-gradient(circle at 15% 50%, rgba(56, 189, 248, 0.08), transparent 25%),
    radial-gradient(circle at 85% 30%, rgba(139, 92, 246, 0.08), transparent 25%);
  filter: blur(40px);
  animation: mesh-breathe 15s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes mesh-breathe {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(1.1); opacity: 1; }
}

/* 极其柔和的鼠标探照灯特效 (类似 Vercel) */
.mouse-spotlight {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 10;
  background: radial-gradient(
    600px circle at var(--mouse-x, 50vw) var(--mouse-y, 50vh),
    rgba(255, 255, 255, 0.4),
    transparent 40%
  );
  mix-blend-mode: soft-light;
  transition: opacity 500ms ease;
  opacity: 0;
}

body:hover .mouse-spotlight {
  opacity: 1;
}

.site-header,
main {
  position: relative;
  z-index: 1;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  cursor: pointer;
}

/* Glassmorphism Mixin Utility Classes */
.glass-panel {
  background: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow-glass), var(--shadow-inner);
  border-radius: 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 72px;
  background: rgba(248, 250, 252, 0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.4);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 clamp(24px, 5vw, 72px);
}

.brand,
.site-nav,
.hero-actions,
.hero-meta {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.5px;
}

.brand-mark {
  display: block;
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.14);
}

.site-nav {
  gap: 32px;
  color: var(--text-muted);
  font-size: 15px;
  font-weight: 500;
}

.site-nav a {
  transition: color 200ms ease;
}

.site-nav a:hover {
  color: var(--text);
}

.nav-download {
  padding: 8px 20px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid #fff;
  color: var(--text) !important;
  box-shadow: 0 2px 10px rgba(0,0,0,0.02), inset 0 1px 0 #fff;
  transition: all 200ms ease !important;
}

.nav-download:hover {
  background: #fff;
  box-shadow: 0 4px 14px rgba(0,0,0,0.05), inset 0 1px 0 #fff;
  transform: translateY(-1px);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
  min-height: calc(100vh - 72px);
  padding: clamp(32px, 6vw, 80px) clamp(24px, 5vw, 72px) clamp(48px, 8vw, 96px);
  max-width: 1400px;
  margin: 0 auto;
}

.hero-copy,
.hero-visual {
  position: relative;
  z-index: 1;
}

.hero-visual {
  transform:
    perspective(1200px)
    rotateX(calc(var(--tilt-y) * -1deg))
    rotateY(calc(var(--tilt-x) * 1deg))
    translate3d(calc(var(--ambient-x) * 0.18), calc(var(--ambient-y) * 0.18), 0);
  transform-style: preserve-3d;
  transition: transform 140ms ease-out;
}

.hero-kicker,
.hero-subline {
  margin: 0;
  color: var(--text-muted);
  font-size: clamp(22px, 2.5vw, 28px);
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: 0.5px;
}

h1 {
  max-width: 760px;
  margin: 16px 0;
  font-size: clamp(52px, 7vw, 92px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -1.5px;
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 40%, var(--accent-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 4px 24px rgba(14, 165, 233, 0.2);
  white-space: nowrap;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 48px;
}

.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 0 36px;
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent-blue) 0%, #2563EB 100%);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
  box-shadow: 0 12px 32px rgba(14, 165, 233, 0.4), inset 0 1px 2px rgba(255,255,255,0.6);
  transition: all 300ms cubic-bezier(0.16, 1, 0.3, 1);
}

.primary-button:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 16px 40px rgba(14, 165, 233, 0.5), inset 0 1px 2px rgba(255,255,255,0.8);
  filter: brightness(1.1);
}

.hero-meta {
  gap: 16px;
  margin: 0;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 400;
  white-space: nowrap;
}

.hero-meta span + span::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #CBD5E1;
  margin-right: 16px;
  vertical-align: middle;
}

.mock-desktop {
  position: relative;
  min-height: 460px;
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.06), inset 0 1px 0 rgba(255,255,255,0.8);
  transform-style: preserve-3d;
  overflow: hidden;
}

.mock-desktop::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.4) 0%, rgba(255,255,255,0) 100%);
  pointer-events: none;
}

.mock-window {
  position: absolute;
  z-index: 1;
  overflow: hidden;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.8);
  box-shadow: 0 12px 32px rgba(0,0,0,0.04);
  transition: transform 400ms cubic-bezier(0.16, 1, 0.3, 1), box-shadow 400ms ease;
}

.mock-window:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: 0 20px 48px rgba(0,0,0,0.08);
}

.mock-window::before {
  display: block;
  height: 32px;
  background: rgba(255,255,255,0.4);
  border-bottom: 1px solid rgba(255,255,255,0.6);
  content: "";
}

.mock-window span {
  position: absolute;
  top: 12px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.mock-window span:nth-child(1) { left: 14px; background: #FF5F56; }
.mock-window span:nth-child(2) { left: 28px; background: #FFBD2E; }
.mock-window span:nth-child(3) { left: 42px; background: #27C93F; }

.mock-window i {
  display: block;
  height: 6px;
  margin: 16px 20px 0;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.2);
}

.mock-window i:nth-of-type(1) { width: 60%; background: rgba(148, 163, 184, 0.4); }
.mock-window i:nth-of-type(2) { width: 45%; }
.mock-window i:nth-of-type(3) { width: 75%; }

.mock-window-a {
  top: 22%;
  left: 8%;
  width: 46%;
  height: 48%;
}

.mock-window-b {
  top: 36%;
  right: 6%;
  width: 48%;
  height: 44%;
}

.desktop-label {
  position: absolute;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.5px;
  white-space: nowrap;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 8px 24px rgba(0,0,0,0.06), inset 0 1px 1px rgba(255,255,255,0.8);
  transform: translateZ(40px);
  animation: label-float 6s ease-in-out infinite alternate;
}

.label-yellow {
  top: 16%;
  left: 12%;
  background: var(--yellow-glass);
  color: #854D0E;
}

.label-blue {
  top: 26%;
  right: 10%;
  background: var(--blue-glass);
  color: #0369A1;
  animation-delay: -2s;
}

.label-green {
  bottom: 18%;
  left: 45%;
  background: var(--green-glass);
  color: #047857;
  animation-delay: -4s;
}

.section {
  padding: clamp(72px, 10vw, 120px) clamp(24px, 5vw, 72px);
  max-width: 1400px;
  margin: 0 auto;
}

.section-center {
  text-align: center;
}

.section h2 {
  max-width: 860px;
  margin: 0 auto 20px;
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -1px;
}

.section-lead {
  max-width: 820px;
  margin: 0 auto;
  color: var(--text-muted);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 400;
  line-height: 1.6;
}

.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 64px;
}

.card,
.feature-card,
.manager-panel,
.download-card {
  background: var(--surface);
  backdrop-filter: blur(32px);
  -webkit-backdrop-filter: blur(32px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-glass), var(--shadow-inner);
  border-radius: 24px;
  transition: all 400ms cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

/* 毛玻璃卡片的斜向流光边缘 */
.card::before,
.feature-card::before,
.manager-panel::before,
.download-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1.5px;
  background: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.1) 40%, rgba(255,255,255,0.1) 60%, rgba(255,255,255,0.6) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

/* 卡片跟随鼠标的高光特效 */
.card::after,
.feature-card::after,
.manager-panel::after,
.download-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    800px circle at var(--mouse-card-x, 0px) var(--mouse-card-y, 0px),
    rgba(255, 255, 255, 0.1),
    transparent 40%
  );
  opacity: 0;
  transition: opacity 300ms ease;
  pointer-events: none;
  z-index: -1;
}

.card:hover::after,
.feature-card:hover::after,
.manager-panel:hover::after,
.download-card:hover::after {
  opacity: 1;
}

.card:hover,
.feature-card:hover,
.manager-panel:hover,
.download-card:hover {
  transform: translateY(-6px);
  background: var(--surface-hover);
  box-shadow: var(--shadow-float), var(--shadow-inner);
}

.card {
  padding: 40px 32px;
  text-align: left;
}

.card h3,
.feature-card h3,
.manager-title h3,
.download-card h3 {
  margin: 0 0 16px;
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.5px;
}

.card p,
.feature-card p,
.manager-title p,
.download-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
}

.section-intro {
  margin-bottom: 64px;
}

.feature-showcase {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 32px;
  align-items: stretch;
}

.manager-panel {
  padding: 40px;
}

.manager-row {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  margin-top: 16px;
  padding: 16px 20px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.5);
  transition: all 250ms ease;
}

.manager-row:hover {
  background: rgba(255, 255, 255, 0.7);
  transform: translateX(4px);
}

.manager-row strong,
.manager-row span {
  display: block;
}

.manager-row strong {
  margin-bottom: 4px;
  font-size: 16px;
  font-weight: 600;
}

.manager-row span:not(.swatch) {
  color: var(--text-muted);
  font-size: 13px;
}

.manager-row button {
  padding: 8px 16px;
  border: 1px solid rgba(255,255,255,0.8);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.5);
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(0,0,0,0.02);
  transition: all 200ms ease;
}

.manager-row button:hover {
  background: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.swatch {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  box-shadow: inset 0 1px 2px rgba(255,255,255,0.8), 0 2px 8px rgba(0,0,0,0.05);
}

.swatch-yellow { background: linear-gradient(135deg, #FEF08A 0%, #FACC15 100%); }
.swatch-blue { background: linear-gradient(135deg, #7DD3FC 0%, #38BDF8 100%); }
.swatch-green { background: linear-gradient(135deg, #6EE7B7 0%, #34D399 100%); }

.feature-list {
  display: grid;
  gap: 24px;
}

.feature-card {
  padding: 32px;
}

.download-info {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
}

.download-logo {
  display: block;
  width: 52px;
  height: 52px;
  flex: 0 0 52px;
  border-radius: 14px;
  object-fit: cover;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.12);
}

.download-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 860px;
  margin: 64px auto 0;
  padding: 48px;
  gap: 24px;
  text-align: left;
  background: linear-gradient(135deg, rgba(255,255,255,0.6) 0%, rgba(241,245,249,0.4) 100%);
}

.download-card h3 {
  font-size: 26px;
  margin-bottom: 8px;
}

.download-card p {
  margin: 0;
}

@keyframes label-float {
  0% { transform: translate3d(0, 0, 40px); }
  100% { transform: translate3d(0, -8px, 40px); }
}

@media (max-width: 980px) {
  .hero,
  .feature-showcase {
    grid-template-columns: 1fr;
  }
  .hero {
    min-height: auto;
  }
  .mock-desktop {
    min-height: 400px;
  }
  .pain-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .site-header {
    height: 64px;
  }
  .site-nav {
    display: none;
  }
  .hero {
    padding-top: 56px;
  }
  h1 {
    font-size: clamp(42px, 12vw, 56px);
  }
  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
  }
  .hero-meta {
    flex-wrap: wrap;
    white-space: normal;
  }
  .mock-desktop {
    min-height: 320px;
    border-radius: 24px;
  }
  .desktop-label {
    min-height: 32px;
    padding: 0 16px;
    font-size: 12px;
  }
  .mock-window-a {
    left: 4%;
    width: 52%;
  }
  .mock-window-b {
    right: 4%;
    width: 52%;
  }
  .label-green {
    left: 35%;
  }
  .section h2 {
    font-size: clamp(32px, 8vw, 44px);
  }
  .download-card {
    align-items: flex-start;
    flex-direction: column;
    padding: 32px 24px;
  }
  .download-logo {
    width: 48px;
    height: 48px;
    flex-basis: 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media (pointer: coarse) {
  .hero-visual {
    transform: none;
  }
}