/* ==========================================================================
   AirLumen 浮光 —— 液态玻璃（Liquid Glass）设计系统
   依据 APPLE_DESIGN_SKILL 的材质与深度原则构建：
   - 半透明材质承载层级，backdrop-filter + saturate 呈现真实玻璃质感
   - 镜面高光边缘（上亮下暗），模拟光打在材质上的反射
   - 大表面更厚（更强模糊 + 更深阴影），小控件更轻
   - 滚动时内容从玻璃下穿过，用渐隐遮罩代替硬分割线
   - 明暗双主题，遵循 prefers-color-scheme
   动效遵循 ANIMATE_SKILL：ease-out 曲线、transform/opacity 为主、
   press 140ms、stagger 60ms、reduced-motion 降级为淡入。
   移动端遵循 MOBILE_NATIVE_SKILL：viewport-fit、safe-area、
   tap-highlight 清零、hover 门控、dvh/svh。
   ========================================================================== */

:root {
  color-scheme: light dark;

  /* ---- 品牌色（TDesign 蓝系） ---- */
  --td-brand-1: #f6f9fe;
  --td-brand-2: #e2ecf8;
  --td-brand-3: #cfe0fa;
  --td-brand-4: #b9cff2;
  --td-brand-5: #9aa0a8;
  --td-brand-6: #3a5680;
  --td-brand-7: #1b4fd8;
  --td-brand-8: #1b4fd8;
  --td-brand-9: #0b1f3a;
  --td-brand-10: #0a1428;

  /* ---- 表面与文本（科技蓝浅色氛围） ---- */
  --bg-base: #edf3fb;
  --bg-deep: #dbe7f5;
  --text-1: rgba(8, 32, 66, 0.94);
  --text-2: rgba(8, 32, 66, 0.7);
  --text-3: rgba(8, 32, 66, 0.55);
  --accent: #1b4fd8;
  --accent-strong: #0f3a91;

  /* ---- 背景光斑（高饱和科技蓝） ---- */
  --orb-a: #5b8def;
  --orb-b: #1b4fd8;
  --orb-c: #a9c8f5;
  --orb-opacity: 0.5;
  --veil-line: rgba(27, 79, 216, 0.09);

  /* ---- 液态玻璃材质 · 重材质 ----
     玻璃 = 半透明底 + 强模糊/高饱和 + 宽镜面边缘 + 多层内高光 + 深投影
     重材质三要素：模糊更深（36px）、镜面边更亮更宽、阴影更深更有层次 */
  --glass-bg: linear-gradient(150deg, rgba(255, 255, 255, 0.86), rgba(255, 255, 255, 0.62));
  --glass-brd: rgba(255, 255, 255, 0.62);
  --glass-blur: 36px;
  --glass-saturate: 200%;
  --glass-edge-top: rgba(255, 255, 255, 1);
  --glass-edge-bottom: rgba(74, 148, 255, 0.5);
  --glass-inset: inset 0 1.5px 0 rgba(255, 255, 255, 0.95),
                 inset 0 -1.5px 0 rgba(255, 255, 255, 0.3),
                 inset 0 0 0 1px rgba(255, 255, 255, 0.38),
                 inset 0 0 30px rgba(255, 255, 255, 0.24);
  --glass-shadow: 0 18px 48px -14px rgba(13, 71, 161, 0.32),
                  0 4px 14px -6px rgba(13, 71, 161, 0.16);
  --glass-shadow-lifted: 0 34px 68px -20px rgba(13, 71, 161, 0.42);
  --sheen: rgba(255, 255, 255, 0.75);
  --hairline: rgba(0, 82, 217, 0.16);
  --scrim: rgba(219, 236, 255, 0.6);

  /* ---- 圆角 ---- */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-full: 999px;

  /* ---- 字体 ---- */
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
    'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* ---- 动效 Token（ANIMATE_SKILL §5，不手估曲线） ---- */
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);      /* 入场/出场，强 ease-out */
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);  /* 屏幕上移动/形变 */
  --ease-drawer: cubic-bezier(0.32, 0.72, 0, 1);   /* iOS 抽屉曲线 */
  --dur-press: 140ms;   /* 按压反馈 100–160ms */
  --dur-hover: 250ms;   /* hover / 小控件 150–250ms */
  --dur-reveal: 520ms;  /* 滚动入场（内容层，允许 >300ms） */

  /* ---- 布局 ---- */
  --maxw: 1320px;
  --dock-clearance: calc(84px + env(safe-area-inset-bottom, 0px));

  /* 锚点滚动时让开悬浮顶栏 */
  scroll-padding-top: 96px;
}

/* ---- 暗色主题：更深的玻璃、更亮的镜面边 ---- */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-base: #0a1428;
    --bg-deep: #101d38;
    --text-1: rgba(245, 245, 247, 0.94);
    --text-2: rgba(225, 225, 230, 0.72);
    --text-3: rgba(190, 190, 195, 0.5);
    --accent: #b9cff2;
    --accent-strong: #cfe0fa;

    --orb-a: #16264a;
    --orb-b: #12203f;
    --orb-c: #0e1a34;
    --orb-opacity: 0.5;
    --veil-line: rgba(96, 140, 220, 0.1);

    /* 暗色重玻璃：模糊更深、饱和度更高、镜面边更亮 */
    --glass-bg: linear-gradient(150deg, rgba(36, 62, 104, 0.74), rgba(16, 34, 62, 0.56));
    --glass-brd: rgba(140, 185, 245, 0.24);
    --glass-blur: 40px;
    --glass-saturate: 220%;
    --glass-edge-top: rgba(200, 226, 255, 0.62);
    --glass-edge-bottom: rgba(8, 18, 36, 0.6);
    --glass-inset: inset 0 1.5px 0 rgba(200, 226, 255, 0.35),
                   inset 0 -1.5px 0 rgba(13, 42, 92, 0.375),
                   inset 0 0 0 1px rgba(160, 200, 255, 0.14),
                   inset 0 0 32px rgba(120, 170, 255, 0.1);
    --glass-shadow: 0 18px 48px -14px rgba(13, 42, 92, 0.813),
                    0 4px 14px -6px rgba(13, 42, 92, 0.5);
    --glass-shadow-lifted: 0 34px 68px -20px rgba(13, 42, 92, 0.875);
    --sheen: rgba(170, 205, 255, 0.3);
    --hairline: rgba(140, 185, 245, 0.18);
    --scrim: rgba(10, 22, 40, 0.55);
  }
}

* { box-sizing: border-box; }

/* ==========================================================================
   移动端原生基线（MOBILE_NATIVE_SKILL）
   ========================================================================== */
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;      /* 横屏不做字体膨胀 */
  -webkit-tap-highlight-color: transparent; /* 点掉灰蓝高亮闪烁 */
  overscroll-behavior: none;           /* 接管下拉刷新与整页橡皮筋 */
}

body {
  margin: 0;
  min-height: 100svh;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text-1);
  background:
    radial-gradient(1200px 700px at 12% -8%, color-mix(in srgb, var(--bg-base) 60%, #fff) 0%, rgba(255, 255, 255, 0) 60%),
    radial-gradient(1000px 800px at 100% 0%, var(--bg-deep) 0%, rgba(220, 236, 255, 0) 55%),
    linear-gradient(180deg, var(--bg-base) 0%, var(--bg-deep) 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 触控元素：零延迟点击 + 不长按选中/弹菜单 */
a, button, [role="button"], .tappable {
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-strong); }

/* 跳转链接：键盘可达，视觉隐藏直到聚焦 */
.skip-link {
  position: fixed;
  top: 10px;
  left: 50%;
  translate: -50% -200%;
  z-index: 100;
  padding: 10px 18px;
  border-radius: var(--r-full);
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  transition: translate 200ms var(--ease-out);
}
.skip-link:focus-visible { translate: -50% 0; }

/* ==========================================================================
   背景：液态光斑 + 网格薄纱
   ========================================================================== */
.aurora {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: var(--orb-opacity);
  will-change: transform;
}
.orb--a {
  width: 46vw; height: 46vw;
  left: -8vw; top: -10vw;
  background: radial-gradient(circle, var(--orb-a), rgba(169, 212, 255, 0) 70%);
  animation: float-a 18s ease-in-out infinite;
}
.orb--b {
  width: 38vw; height: 38vw;
  right: -6vw; top: 22vh;
  background: radial-gradient(circle, var(--orb-b), rgba(201, 230, 255, 0) 70%);
  animation: float-b 22s ease-in-out infinite;
}
.orb--c {
  width: 30vw; height: 30vw;
  left: 28vw; bottom: -8vw;
  background: radial-gradient(circle, var(--orb-c), rgba(217, 237, 255, 0) 70%);
  animation: float-c 26s ease-in-out infinite;
}

@keyframes float-a {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(6vw, 5vh, 0) scale(1.12); }
}
@keyframes float-b {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1.05); }
  50% { transform: translate3d(-7vw, -6vh, 0) scale(0.95); }
}
@keyframes float-c {
  0%, 100% { transform: translate3d(0, 0, 0) scale(0.95); }
  50% { transform: translate3d(5vw, -8vh, 0) scale(1.1); }
}

.grid-veil {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--veil-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--veil-line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 78%);
}

/* ==========================================================================
   液态玻璃基材
   ::before = 镜面高光边缘（上亮下暗，1.5px，随圆角弯曲）
   ::after  = 指针追随的镜面反射（由 JS 写入 --mx/--my）
   ========================================================================== */
.glass {
  position: relative;
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  border-radius: var(--r-lg);
  box-shadow: var(--glass-shadow), var(--glass-inset);
}

.glass::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1.5px; /* 重材质：镜面边更厚，光感更明确 */
  background: linear-gradient(160deg,
    var(--glass-edge-top) 0%,
    var(--glass-edge-top) 30%,
    rgba(255, 255, 255, 0.12) 50%,
    transparent 64%,
    var(--glass-edge-bottom) 100%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  pointer-events: none;
}

/* 大表面 = 更厚的材质（APPLE_DESIGN_SKILL §12） */
.glass--thick {
  --glass-blur: 48px;
  box-shadow: var(--glass-shadow-lifted), var(--glass-inset);
}

/* ==========================================================================
   顶栏：悬浮玻璃，滚动时加深；内容从下方穿过
   ========================================================================== */
.topbar {
  position: sticky;
  top: max(14px, env(safe-area-inset-top, 0px));
  z-index: 20;
  max-width: var(--maxw);
  margin: 12px auto 0;
  padding: 10px 14px 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-radius: var(--r-full);
  /* 材质化入场：模糊从无到有，配合缩放，像一块玻璃凝结成形 */
  animation: materialize 700ms var(--ease-out) both;
}

@keyframes materialize {
  from {
    opacity: 0;
    transform: translateY(-14px) scale(0.97);
    -webkit-backdrop-filter: blur(0px) saturate(100%);
    backdrop-filter: blur(0px) saturate(100%);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  }
}

/* 滚动后：更重的材质 + 底部渐隐遮罩（滚动边缘效果，替代硬分割线） */
.topbar[data-scrolled] {
  --glass-bg: linear-gradient(150deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.72));
  --glass-shadow: 0 22px 52px -16px rgba(13, 71, 161, 0.4);
}
@media (prefers-color-scheme: dark) {
  .topbar[data-scrolled] {
    --glass-bg: linear-gradient(150deg, rgba(36, 62, 104, 0.84), rgba(16, 34, 62, 0.68));
  }
}
.topbar::after {
  content: '';
  position: absolute;
  left: 12%;
  right: 12%;
  bottom: -14px;
  height: 14px;
  background: linear-gradient(180deg, var(--scrim), transparent);
  opacity: 0;
  transition: opacity var(--dur-hover) var(--ease-out);
  pointer-events: none;
}
.topbar[data-scrolled]::after { opacity: 1; }

.brand { display: flex; align-items: center; gap: 10px; color: var(--text-1); }
.brand__mark {
  border-radius: 10px;
  box-shadow: 0 4px 14px -4px rgba(0, 82, 217, 0.5);
  transition: transform 600ms var(--ease-out);
}
.brand:hover .brand__mark { transform: rotate(-12deg) scale(1.08); }
.brand__text { display: flex; align-items: baseline; gap: 8px; }
.brand__text strong { font-size: 17px; letter-spacing: 0.2px; }
.brand__text small { color: var(--text-3); font-size: 12px; }

.topbar__nav { display: flex; align-items: center; gap: 6px; }
.topbar__nav a:not(.btn) {
  color: var(--text-2);
  font-size: 14px;
  padding: 8px 12px;
  border-radius: var(--r-full);
  transition: background var(--dur-hover) var(--ease-out),
              color var(--dur-hover) var(--ease-out);
}
/* hover 仅精确指针生效：触屏点完不留粘滞 hover（MOBILE_NATIVE §1） */
@media (hover: hover) and (pointer: fine) {
  .topbar__nav a:not(.btn):hover {
    color: var(--accent);
    background: rgba(255, 255, 255, 0.6);
  }
  @media (prefers-color-scheme: dark) {
    .topbar__nav a:not(.btn):hover { background: rgba(122, 184, 255, 0.14); }
  }
}

/* ==========================================================================
   按钮：液态玻璃 + 按压即时反馈（140ms ease-out，pointer-down 态）
   ========================================================================== */
.btn {
  --btn-h: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: var(--btn-h);
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--r-full);
  font: inherit;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--dur-press) var(--ease-out),
              box-shadow var(--dur-hover) var(--ease-out),
              background var(--dur-hover) var(--ease-out),
              color var(--dur-hover) var(--ease-out);
}
.btn--sm { --btn-h: 34px; padding: 0 16px; font-size: 14px; }
.btn--lg { --btn-h: 48px; padding: 0 32px; font-size: 16px; font-weight: 600; }

/* 按压 = 即时缩放反馈，不等 click */
.btn:active { transform: scale(0.97); }

.btn--primary {
  color: #fff;
  background: linear-gradient(135deg, #3a5680, #0f3a91);
  box-shadow: 0 12px 28px -10px rgba(0, 64, 184, 0.8),
              inset 0 1px 0 rgba(255, 255, 255, 0.42),
              inset 0 -1px 0 rgba(0, 32, 120, 0.35);
}

.btn--ghost {
  color: var(--accent);
  background: rgba(255, 255, 255, 0.55);
  border-color: rgba(255, 255, 255, 0.8);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
@media (prefers-color-scheme: dark) {
  .btn--ghost {
    background: rgba(30, 52, 88, 0.5);
    border-color: rgba(140, 185, 245, 0.3);
  }
}

@media (hover: hover) and (pointer: fine) {
  .btn--primary:hover {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 16px 30px -12px rgba(0, 82, 217, 0.85),
                inset 0 1px 0 rgba(255, 255, 255, 0.35);
  }
  .btn--ghost:hover {
    color: var(--accent-strong);
    background: rgba(255, 255, 255, 0.8);
    transform: translateY(-2px);
  }
  @media (prefers-color-scheme: dark) {
    .btn--ghost:hover { background: rgba(30, 52, 88, 0.72); }
  }
}

/* ==========================================================================
   布局
   ========================================================================== */
main {
  position: relative;
  z-index: 1;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px 32px;
}

.section { padding: 56px 0 0; }
.section__head { margin-bottom: 20px; }
.section__head h2 {
  margin: 0 0 6px;
  font-size: clamp(24px, 3.4vw, 32px);
  letter-spacing: -0.02em; /* 大字号负字距（APPLE_DESIGN §15） */
  line-height: 1.15;
}
.section__head p { margin: 0; color: var(--text-2); font-size: 15px; }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero { padding: 64px 0 4px; text-align: center; }

.hero__eyebrow {
  display: inline-block;
  margin: 0 0 14px;
  padding: 6px 16px;
  font-size: 12.5px;
  letter-spacing: 0.12em; /* 小字号正字距 */
  text-transform: uppercase;
  color: var(--accent-strong);
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: var(--r-full);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  animation: rise 700ms var(--ease-out) both;
}
@media (prefers-color-scheme: dark) {
  .hero__eyebrow {
    background: rgba(30, 52, 88, 0.5);
    border-color: rgba(140, 185, 245, 0.28);
  }
}

.hero__title {
  margin: 0;
  font-size: clamp(46px, 10vw, 96px);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.03em;
  background: linear-gradient(120deg, #1b4fd8 0%, #3a5680 45%, #9aa0a8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  /* 科技感辉光：文字像一块发光的玻璃铭牌 */
  filter: drop-shadow(0 10px 32px rgba(42, 124, 246, 0.4));
  animation: rise 700ms 60ms var(--ease-out) both;
}
@media (prefers-color-scheme: dark) {
  .hero__title {
    background: linear-gradient(120deg, #cfe0fa 0%, #9aa0a8 45%, #b9cff2 100%);
    -webkit-background-clip: text;
    background-clip: text;
    filter: drop-shadow(0 10px 36px rgba(74, 148, 255, 0.45));
  }
}
.hero__title-thin {
  display: block;
  font-size: clamp(15px, 2.4vw, 22px);
  font-weight: 400;
  letter-spacing: 0.35em;
  text-indent: 0.35em;
  opacity: 0.72;
  -webkit-text-fill-color: var(--accent);
  transform: translateY(-6px);
}

.hero__desc {
  max-width: 640px;
  margin: 16px auto 0;
  color: var(--text-2);
  font-size: clamp(15px, 1.9vw, 17.5px);
  animation: rise 700ms 120ms var(--ease-out) both;
}
.hero__desc strong { color: var(--text-1); font-weight: 600; }

.hero__actions {
  margin-top: 26px;
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  animation: rise 700ms 180ms var(--ease-out) both;
}

.hero__meta {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  animation: rise 700ms 240ms var(--ease-out) both;
}
.stat { padding: 16px 12px; border-radius: var(--r-md); }
.stat b {
  display: block;
  font-size: clamp(22px, 3.2vw, 30px);
  color: var(--accent-strong);
  font-variant-numeric: tabular-nums;
}
.stat span { font-size: 13px; color: var(--text-3); }

/* ==========================================================================
   卡片网格
   ========================================================================== */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 16px;
}
/* 关于区卡片：与服务卡同样的网格节奏（宽屏三列） */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}
.grid__empty { grid-column: 1 / -1; padding: 34px; text-align: center; color: var(--text-3); }

.card {
  position: relative;
  padding: 24px;
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: transform var(--dur-hover) var(--ease-out),
              box-shadow var(--dur-hover) var(--ease-out);
}

/* 指针追随的镜面反射 */
.card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(360px circle at var(--mx, 50%) var(--my, 0%),
    var(--sheen), transparent 65%);
  opacity: 0;
  transition: opacity var(--dur-hover) var(--ease-out);
  pointer-events: none;
}

@media (hover: hover) and (pointer: fine) {
  .card:hover {
    transform: translateY(-8px);
    box-shadow: var(--glass-shadow-lifted), var(--glass-inset);
  }
  .card:hover::after { opacity: 1; }
}

.card__icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  color: var(--accent-strong);
  background: linear-gradient(140deg, rgba(255, 255, 255, 0.94), rgba(196, 224, 252, 0.94));
  box-shadow: 0 8px 20px -6px rgba(0, 64, 184, 0.5),
              inset 0 1px 0 rgba(255, 255, 255, 0.9),
              inset 0 0 0 1px rgba(255, 255, 255, 0.45);
  margin-bottom: 14px;
}
@media (prefers-color-scheme: dark) {
  .card__icon {
    background: linear-gradient(140deg, rgba(48, 76, 122, 0.85), rgba(24, 46, 82, 0.85));
    box-shadow: 0 6px 16px -6px rgba(13, 42, 92, 0.75),
                inset 0 1px 0 rgba(13, 42, 92, 0.313);
  }
}
.card__icon svg { width: 24px; height: 24px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; font-size: 14.5px; color: var(--text-2); }

.card__tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 10px;
  font-size: 11.5px;
  color: var(--accent-strong);
  background: rgba(0, 82, 217, 0.08);
  border-radius: var(--r-full);
  white-space: nowrap;
}
@media (prefers-color-scheme: dark) {
  .card__tag { background: rgba(122, 184, 255, 0.14); }
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
}
.card__link svg { width: 15px; height: 15px; transition: transform var(--dur-hover) var(--ease-out); }
@media (hover: hover) and (pointer: fine) {
  .card:hover .card__link svg { transform: translateX(4px); }
}

/* ---------- 服务卡（数据驱动渲染） ---------- */
.grid--services {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
}

.card--service { padding: 24px; }

.card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 4px;
}
.card--service .card__icon { margin-bottom: 0; }
.card__badges {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.card--service .card__tag { margin-bottom: 0; }

/* 在线状态点：不显示文字，绿色圆点 + 呼吸脉冲 */
.card__status {
  display: inline-grid;
  place-items: center;
  flex: none;
  width: 15px;
  height: 15px;
  border-radius: var(--r-full);
  background: rgba(23, 125, 85, 0.12);
}
@media (prefers-color-scheme: dark) {
  .card__status { background: rgba(78, 207, 154, 0.16); }
}
.card__status i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #22a06b;
  box-shadow: 0 0 0 2.5px rgba(34, 160, 107, 0.16);
  animation: pulse 2.2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.82); }
}

/* 规划中：静止的琥珀色状态点 */
.card__status--planned { background: rgba(180, 120, 20, 0.12); }
.card__status--planned i {
  background: #d9930d;
  box-shadow: 0 0 0 2.5px rgba(217, 147, 13, 0.16);
  animation: none;
}

/* 即将上线：不可点击的说明文字 */
.card__link--soon {
  color: var(--text-3);
  cursor: default;
  pointer-events: none;
}

.card__desc { min-height: 3.2em; }

.card__points {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}
.card__points li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.6;
}
.card__points li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: linear-gradient(140deg, var(--td-brand-4), var(--td-brand-7));
  box-shadow: 0 0 0 3px rgba(0, 82, 217, 0.1);
}
.card__points b { color: var(--text-1); font-weight: 600; }
.card__points code {
  padding: 1px 6px;
  font-size: 0.9em;
  font-family: var(--font-mono);
  color: var(--accent-strong);
  background: rgba(0, 82, 217, 0.07);
  border-radius: var(--r-sm);
  word-break: break-all;
}
@media (prefers-color-scheme: dark) {
  .card__points code { background: rgba(122, 184, 255, 0.14); }
}

.card__stats {
  margin-top: 16px;
  padding-top: 15px;
  border-top: 1px dashed var(--hairline);
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}
.chip {
  font-size: 12px;
  color: var(--accent-strong);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--hairline);
  border-radius: var(--r-full);
  padding: 4px 11px;
  white-space: nowrap;
}
@media (prefers-color-scheme: dark) {
  .chip { background: rgba(30, 52, 88, 0.6); }
}

.section__more {
  margin: 18px 0 0;
  font-size: 13.5px;
  color: var(--text-3);
  text-align: center;
}

/* ==========================================================================
   书签：起始页核心能力（本地存储，玻璃磁贴 + 液态高光）
   ========================================================================== */
.bookmark-form {
  display: flex;
  gap: 10px;
  padding: 12px;
  border-radius: var(--r-lg);
  margin-bottom: 18px;
}
.bookmark-form input {
  flex: 1;
  min-width: 0;
  height: 44px;
  padding: 0 16px;
  border: 1px solid var(--hairline);
  border-radius: var(--r-full);
  background: rgba(255, 255, 255, 0.66);
  color: var(--text-1);
  font-size: 16px; /* iOS 聚焦不缩放 */
  transition: border-color var(--dur-hover) var(--ease-out),
              box-shadow var(--dur-hover) var(--ease-out);
}
.bookmark-form input::placeholder { color: var(--text-3); }
.bookmark-form input:focus {
  outline: none;
  border-color: var(--td-brand-6);
  box-shadow: 0 0 0 3px var(--accent-ring, rgba(13, 42, 92, 0.124));
}
.bookmark-form__name { flex: 0 1 180px; }
.bookmark-form .btn { flex: none; }

.grid--bookmarks {
  grid-template-columns: repeat(auto-fill, minmax(132px, 1fr));
  gap: 12px;
}

.bookmark {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: transform var(--dur-hover) var(--ease-out);
}
.bookmark__open {
  display: grid;
  justify-items: center;
  gap: 10px;
  padding: 18px 10px 16px;
  text-decoration: none;
  color: var(--text-1);
}
.bookmark__icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--hairline);
  font-size: 20px;
  overflow: hidden;
}
.bookmark__icon img { width: 24px; height: 24px; object-fit: contain; }
.bookmark__name {
  font-size: 13px;
  font-weight: 500;
  line-height: 1.4;
  text-align: center;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.bookmark__del {
  position: absolute;
  top: 6px;
  right: 6px;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.7);
  color: var(--text-3);
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--dur-hover) var(--ease-out),
              color var(--dur-hover) var(--ease-out);
}
.bookmark__del svg { width: 12px; height: 12px; }
.bookmark:hover .bookmark__del,
.bookmark__del:focus-visible { opacity: 1; }
.bookmark__del:hover { color: #e5484d; }
/* 触屏：删除按钮常显（无 hover 可用） */
@media (hover: none) {
  .bookmark__del { opacity: 0.75; }
}
@media (prefers-reduced-motion: reduce) {
  .bookmark { transition: none; }
}

/* 顶栏注册按钮：与 hero 主按钮同式的缩小版 */
.topbar__cta {
  margin-left: 6px;
  padding: 8px 18px !important;
  border-radius: var(--r-full);
  background: linear-gradient(135deg, var(--td-brand-6), var(--td-brand-8));
  color: #fff !important;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 6px 16px -6px rgba(31, 111, 224, 0.5);
  transition: transform var(--dur-press) var(--ease-out),
              box-shadow var(--dur-hover) var(--ease-out);
}
.topbar__cta:active { transform: scale(0.96); }

/* ==========================================================================
   FAQ：玻璃容器 + 渐隐发丝线（滚动边缘效果，不用硬分割线）
   ========================================================================== */
.faq { padding: 8px 22px; border-radius: var(--r-lg); }
.faq details { position: relative; }
.faq details + details::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--hairline) 18%, var(--hairline) 82%, transparent);
}
.faq summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 26px 18px 0;
  font-weight: 500;
  position: relative;
  transition: color var(--dur-hover) var(--ease-out);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '';
  position: absolute;
  right: 4px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 350ms var(--ease-out);
}
.faq details[open] summary { color: var(--accent); }
.faq details[open] summary::after { transform: translateY(-30%) rotate(225deg); }
.faq p { margin: 0 0 18px; color: var(--text-2); font-size: 14.5px; }

/* ==========================================================================
   CTA / Footer
   ========================================================================== */
.cta {
  margin-top: 56px;
  padding: 40px 28px;
  text-align: center;
  border-radius: var(--r-xl);
  background: linear-gradient(140deg, rgba(255, 255, 255, 0.88), rgba(186, 216, 252, 0.72));
}
@media (prefers-color-scheme: dark) {
  .cta {
    background: linear-gradient(140deg, rgba(36, 62, 104, 0.78), rgba(20, 40, 72, 0.56));
  }
}
.cta h2 { margin: 0 0 8px; font-size: clamp(22px, 3.2vw, 30px); letter-spacing: -0.02em; }
.cta p { margin: 0; color: var(--text-2); }
.cta__actions { margin-top: 20px; }

.footer {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 10px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  /* 底部安全区：主屏指示条区域留白（MOBILE_NATIVE §7） */
  padding: 28px 24px calc(24px + env(safe-area-inset-bottom, 0px));
  font-size: 13.5px;
  color: var(--text-3);
}
.footer a { color: var(--text-2); }
.footer a:hover { color: var(--accent); }
.footer__dot { opacity: 0.5; }

/* ==========================================================================
   移动端底部 Dock：原生 App 标签栏手感
   ========================================================================== */
.dock {
  display: none;
}

@media (max-width: 720px) {
  .dock {
    position: fixed;
    left: 50%;
    bottom: calc(10px + env(safe-area-inset-bottom, 0px));
    translate: -50% 0;
    z-index: 30;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2px;
    width: min( calc(100vw - 28px), 420px );
    padding: 6px;
    border-radius: var(--r-xl);
    /* 底部 Dock 抬高模糊，重材质 */
    --glass-blur: 44px;
    animation: dock-in 600ms 300ms var(--ease-out) both;
  }

  @keyframes dock-in {
    from { opacity: 0; transform: translateY(18px); }
    to   { opacity: 1; transform: translateY(0); }
  }

  .dock__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: 8px 4px 7px;
    border-radius: var(--r-lg);
    font-size: 10.5px;
    font-weight: 500;
    color: var(--text-2);
    /* 按压反馈：原生 tab 的即时缩放 */
    transition: transform var(--dur-press) var(--ease-out),
                color var(--dur-hover) var(--ease-out),
                background var(--dur-hover) var(--ease-out);
  }
  .dock__item svg { width: 21px; height: 21px; }
  .dock__item:active { transform: scale(0.92); }

  /* 当前区块：品牌色 + 玻璃药丸底，iOS 标签栏的选中感 */
  .dock__item.is-active {
    color: var(--accent-strong);
    background: rgba(255, 255, 255, 0.55);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
  }
  @media (prefers-color-scheme: dark) {
    .dock__item.is-active {
      background: rgba(122, 184, 255, 0.16);
      box-shadow: inset 0 1px 0 rgba(13, 42, 92, 0.275);
    }
  }

  /* 给 Dock 让位：页脚不被遮挡 */
  .footer { padding-bottom: calc(24px + var(--dock-clearance)); }
}

/* ==========================================================================
   入场动效：仅 transform + opacity；stagger 60ms（ANIMATE_SKILL）
   ========================================================================== */
@keyframes rise {
  from { opacity: 0; transform: translateY(22px); }
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(26px) scale(0.985);
  transition: opacity var(--dur-reveal) var(--ease-out),
              transform var(--dur-reveal) var(--ease-out);
}
.reveal.is-in { opacity: 1; transform: none; }

/* ==========================================================================
   响应式（桌面断点兜底；移动端基线已全局生效）
   ========================================================================== */
@media (max-width: 720px) {
  .topbar { margin: 10px 12px 0; padding: 8px 10px 8px 12px; }
  .topbar__nav a:not(.btn) { display: none; }
  .hero { padding: 48px 0 0; }
  /* 统计三宫格紧凑横排，节省首屏高度 */
  .hero__meta { grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 32px; }
  .stat { padding: 12px 6px; }
  .stat b { font-size: 22px; }
  .stat span { font-size: 11px; }
  .section { padding-top: 44px; }
  .cta { margin-top: 44px; padding: 32px 20px; }
  .grid--services { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
}

/* 尊重减少透明度偏好：玻璃变实（APPLE_DESIGN §14） */
@media (prefers-reduced-transparency: reduce) {
  .glass, .topbar, .dock {
    background: var(--bg-base);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
  @media (prefers-color-scheme: dark) {
    .glass, .topbar, .dock { background: var(--bg-deep); }
  }
  .topbar::after { display: none; }
}

/* 尊重高对比度偏好：近实底 + 明确边框（APPLE_DESIGN §14） */
@media (prefers-contrast: more) {
  .glass, .topbar, .dock, .btn--ghost, .chip {
    border: 1px solid var(--text-1);
  }
  .glass::before { display: none; }
}

/* 尊重减少动效偏好：位置/缩放类动效降级为短淡入（APPLE_DESIGN §14） */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .orb { animation: none; }
  .topbar, .dock { animation: none; }
  .card__status i { animation: none; }
  .hero__eyebrow, .hero__title, .hero__desc, .hero__actions, .hero__meta {
    animation: fade 200ms ease both;
  }
  @keyframes fade {
    from { opacity: 0; }
    to { opacity: 1; }
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: opacity 200ms ease;
  }
  .reveal:not(.is-in) { opacity: 0; }
}