/* ===========================================================================
 * 点鹤视店通 · 官方网站
 * 设计 DNA：光学精密 × 企业级信赖 × 克制的科技感
 *   主色  光学蓝 #2563EB   强调  镀膜青 #22D3EE（镜片反光）
 *   结构  深色 Hero + 浅色内容，形成"光学暗房 → 明亮展示"的节奏
 * =========================================================================== */

/* ---------------- Design Tokens ---------------- */
:root {
  /* 深色底（Hero / CTA / Footer） */
  --ink-900: #060A12;
  --ink-800: #0A101D;
  --ink-700: #101A2C;

  /* 品牌色 */
  --blue-700: #1D4ED8;
  --blue-600: #2563EB;
  --blue-500: #3B82F6;
  --blue-400: #60A5FA;
  --blue-soft: #EFF5FF;
  --cyan-500: #06B6D4;
  --cyan-400: #22D3EE;
  --cyan-soft: #E8FBFF;

  /* 浅色界面 */
  --surface: #FFFFFF;
  --surface-2: #F6F8FC;
  --surface-3: #EDF2F9;
  --line: #E5EBF3;
  --line-strong: #D5DEEA;

  /* 文字 */
  --t1: #0B1220;
  --t2: #4A5568;
  --t3: #8592A6;

  /* 深色区文字 */
  --d1: #FFFFFF;
  --d2: rgba(255, 255, 255, 0.74);
  --d3: rgba(255, 255, 255, 0.52);
  --d-line: rgba(255, 255, 255, 0.1);
  --d-line-2: rgba(255, 255, 255, 0.06);

  /* 功能色 */
  --ok: #10B981;
  --warn: #F59E0B;

  /* 间距（8pt 网格） */
  --sp-1: 4px;  --sp-2: 8px;   --sp-3: 12px;  --sp-4: 16px;
  --sp-5: 20px; --sp-6: 24px;  --sp-8: 32px;  --sp-10: 40px;
  --sp-12: 48px; --sp-16: 64px; --sp-20: 80px; --sp-24: 96px;

  /* 圆角 */
  --r-sm: 8px; --r-md: 12px; --r-lg: 18px; --r-xl: 26px; --r-full: 999px;

  /* 阴影（克制：两层以内） */
  --sh-1: 0 1px 2px rgba(11, 18, 32, .04), 0 4px 14px rgba(11, 18, 32, .05);
  --sh-2: 0 2px 6px rgba(11, 18, 32, .05), 0 18px 44px rgba(11, 18, 32, .09);
  --sh-blue: 0 6px 18px rgba(37, 99, 235, .28);

  /* 动效 */
  --ease: cubic-bezier(.2, 0, 0, 1);
  --ease-spring: cubic-bezier(.34, 1.4, .64, 1);
  --dur-1: 150ms;
  --dur-2: 250ms;
  --dur-3: 420ms;

  /* 字体 */
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", "Noto Sans SC", system-ui, "Segoe UI", sans-serif;
  --font-num: "SF Mono", "JetBrains Mono", ui-monospace, "DIN Alternate", var(--font);

  --nav-h: 68px;
  --radius-page: clamp(16px, 2vw, 28px);
}

/* ---------------- Reset ---------------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  /* 锚点跳转时为固定导航预留高度，标题不被遮挡 */
  scroll-padding-top: calc(var(--nav-h) + 16px);
}
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--t1);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; background: none; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }
b, strong { font-weight: 650; }

/* 数字统一等宽，表格与价格对齐更整齐 */
.num, .stats b, .plan__price b, .mock__kpi b { font-variant-numeric: tabular-nums; }

/* ---------------- 通用容器与排版 ---------------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--sp-6);
}

.section { padding: clamp(72px, 9vw, 128px) 0; position: relative; }
.section--tight { padding: clamp(56px, 6vw, 88px) 0; }

.section__head { max-width: 780px; margin-bottom: clamp(40px, 5vw, 64px); }
.section__head--center { margin-left: auto; margin-right: auto; text-align: center; }

.eyebrow {
  display: inline-block;
  margin-bottom: var(--sp-4);
  padding: 5px 12px;
  border-radius: var(--r-full);
  background: var(--blue-soft);
  color: var(--blue-700);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
}

.section__title {
  font-size: clamp(26px, 3.4vw, 42px);
  line-height: 1.25;
  letter-spacing: -.02em;
  font-weight: 700;
  color: var(--t1);
}

.section__desc {
  margin-top: var(--sp-5);
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.8;
  color: var(--t2);
  max-width: 720px;
}
.section__head--center .section__desc { margin-left: auto; margin-right: auto; }

/* 品牌渐变文字 */
.grad {
  background: linear-gradient(100deg, var(--blue-500) 0%, var(--cyan-400) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hl-text { color: var(--blue-700); }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  height: 44px;
  padding: 0 var(--sp-6);
  border-radius: 11px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -.01em;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: transform var(--dur-1) var(--ease),
              background-color var(--dur-2) var(--ease),
              box-shadow var(--dur-2) var(--ease),
              border-color var(--dur-2) var(--ease),
              color var(--dur-2) var(--ease);
}
.btn:active { transform: scale(.975); }
.btn:focus-visible { outline: 3px solid rgba(37, 99, 235, .35); outline-offset: 2px; }

.btn--primary {
  background: linear-gradient(180deg, var(--blue-500) 0%, var(--blue-600) 100%);
  color: #fff;
  box-shadow: var(--sh-blue);
}
.btn--primary:hover { filter: brightness(1.06); transform: translateY(-1px); box-shadow: 0 10px 26px rgba(37, 99, 235, .34); }

.btn--outline {
  border-color: var(--line-strong);
  background: var(--surface);
  color: var(--t1);
}
.btn--outline:hover { border-color: var(--blue-500); color: var(--blue-700); transform: translateY(-1px); }

/* 深色背景上的描边按钮 */
.hero .btn--outline, .cta .btn--outline {
  background: rgba(255, 255, 255, .06);
  border-color: rgba(255, 255, 255, .22);
  color: #fff;
  backdrop-filter: blur(8px);
}
.hero .btn--outline:hover, .cta .btn--outline:hover { background: rgba(255, 255, 255, .12); border-color: rgba(255, 255, 255, .4); }

.btn--ghost { color: var(--t1); }
.btn--ghost:hover { color: var(--blue-700); background: var(--blue-soft); }

.btn--lg { height: 52px; padding: 0 var(--sp-8); font-size: 16px; border-radius: 13px; }
.btn--block { width: 100%; }
.btn__arrow { width: 16px; height: 16px; transition: transform var(--dur-2) var(--ease); }
.btn:hover .btn__arrow { transform: translateX(3px); }

.link { color: var(--blue-700); font-weight: 600; font-size: 14px; display: inline-flex; gap: 6px; transition: gap var(--dur-2) var(--ease); }
.link:hover { gap: 10px; }

.badge {
  display: inline-block;
  margin-left: 6px;
  padding: 2px 8px;
  border-radius: var(--r-full);
  background: var(--cyan-soft);
  color: #0E7490;
  font-size: 11px;
  font-style: normal;
  font-weight: 700;
  vertical-align: middle;
}

/* ---------------- 导航 ---------------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background-color var(--dur-2) var(--ease),
              box-shadow var(--dur-2) var(--ease),
              backdrop-filter var(--dur-2) var(--ease);
}
.nav__inner { display: flex; align-items: center; gap: var(--sp-6); }

/* 滚动后从"透明玻璃"变为"实底白" */
.nav.is-solid {
  background: rgba(255, 255, 255, .86);
  backdrop-filter: saturate(180%) blur(16px);
  box-shadow: 0 1px 0 var(--line), 0 4px 20px rgba(11, 18, 32, .05);
}

.brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand__mark { width: 34px; height: 34px; }
.brand__mark svg { width: 100%; height: 100%; }
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__text strong { font-size: 16px; font-weight: 700; letter-spacing: -.01em; color: #fff; transition: color var(--dur-2) var(--ease); }
.brand__text em { font-size: 10.5px; font-style: normal; letter-spacing: .1em; text-transform: uppercase; color: var(--d3); transition: color var(--dur-2) var(--ease); }
.nav.is-solid .brand__text strong { color: var(--t1); }
.nav.is-solid .brand__text em { color: var(--t3); }

.nav__menu { display: flex; align-items: center; gap: var(--sp-1); margin-left: auto; }
.nav__menu a {
  position: relative;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--d2);
  transition: color var(--dur-2) var(--ease), background-color var(--dur-2) var(--ease);
}
.nav__menu a:hover { color: #fff; background: rgba(255, 255, 255, .08); }
.nav.is-solid .nav__menu a { color: var(--t2); }
.nav.is-solid .nav__menu a:hover { color: var(--blue-700); background: var(--blue-soft); }

/* 当前所在章节高亮（由 main.js 的滚动监听添加 is-active） */
.nav__menu a.is-active { color: #fff; }
.nav__menu a.is-active::after {
  content: "";
  position: absolute; left: 12px; right: 12px; bottom: 2px;
  height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan-400), var(--blue-500));
}
.nav.is-solid .nav__menu a.is-active { color: var(--blue-700); }

.nav__actions { display: flex; align-items: center; gap: var(--sp-3); margin-left: var(--sp-4); }
.nav__actions .btn { height: 40px; padding: 0 var(--sp-5); font-size: 14px; }

/* 导航里的幽灵按钮：默认压在深色 Hero 上，用白字 + 白描边才看得清；
   .btn--ghost 的基础色是深色文字，直接套在深色背景上几乎不可见，这里覆盖掉 */
.nav .btn--ghost {
  color: #fff;
  border-color: rgba(255, 255, 255, .26);
  background: rgba(255, 255, 255, .06);
  backdrop-filter: blur(8px);
}
.nav .btn--ghost:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, .46);
  background: rgba(255, 255, 255, .14);
}
/* 滚动后导航变实底白，按钮也跟着切回浅色体系 */
.nav.is-solid .btn--ghost {
  color: var(--t1);
  border-color: var(--line-strong);
  background: var(--surface);
  backdrop-filter: none;
}
.nav.is-solid .btn--ghost:hover {
  color: var(--blue-700);
  border-color: var(--blue-500);
  background: var(--blue-soft);
}

.nav__toggle { display: none; flex-direction: column; gap: 5px; margin-left: auto; padding: 10px; }
.nav__toggle span { width: 22px; height: 2px; border-radius: 2px; background: #fff; transition: transform var(--dur-2) var(--ease), opacity var(--dur-2) var(--ease), background-color var(--dur-2) var(--ease); }
.nav.is-solid .nav__toggle span { background: var(--t1); }
.nav.is-open .nav__toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav.is-open .nav__toggle span:nth-child(2) { opacity: 0; }
.nav.is-open .nav__toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------------- Hero ---------------- */
.hero {
  position: relative;
  padding: calc(var(--nav-h) + clamp(56px, 8vw, 104px)) 0 clamp(64px, 7vw, 96px);
  background: var(--ink-900);
  overflow: hidden;
  isolation: isolate;
}
/* 光学光晕：模拟镜片后的光斑 */
.hero__glow {
  position: absolute;
  top: -30%; left: 50%;
  width: min(1200px, 120vw);
  aspect-ratio: 1;
  transform: translateX(-50%);
  background:
    radial-gradient(circle at 38% 42%, rgba(37, 99, 235, .38), transparent 46%),
    radial-gradient(circle at 66% 34%, rgba(34, 211, 238, .22), transparent 44%),
    radial-gradient(circle at 50% 70%, rgba(29, 78, 216, .2), transparent 50%);
  filter: blur(20px);
  z-index: -1;
}
/* 精密网格：呼应光学仪器的刻度感 */
.hero__grid-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--d-line-2) 1px, transparent 1px),
    linear-gradient(90deg, var(--d-line-2) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 62% at 50% 34%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 80% 62% at 50% 34%, #000 30%, transparent 78%);
}

.hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px 6px 12px;
  border-radius: var(--r-full);
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .14);
  color: var(--d2);
  font-size: 13px;
  font-weight: 500;
  backdrop-filter: blur(8px);
}
.pill__dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--cyan-400);
  box-shadow: 0 0 0 4px rgba(34, 211, 238, .18);
}

.hero__title {
  margin-top: var(--sp-6);
  font-size: clamp(32px, 5vw, 62px);
  line-height: 1.14;
  letter-spacing: -.03em;
  font-weight: 750;
  color: #fff;
}
.hero__sub {
  margin-top: var(--sp-6);
  font-size: clamp(15px, 1.5vw, 17.5px);
  line-height: 1.85;
  color: var(--d2);
  max-width: 560px;
}
.hero__sub b { color: #fff; font-weight: 600; }

.hero__cta { display: flex; flex-wrap: wrap; gap: var(--sp-4); margin-top: var(--sp-8); }

.hero__points {
  display: flex; flex-wrap: wrap; gap: var(--sp-2) var(--sp-6);
  margin-top: var(--sp-8);
  color: var(--d3);
  font-size: 13.5px;
}
.hero__points li { position: relative; padding-left: 18px; }
.hero__points li::before {
  content: ""; position: absolute; left: 0; top: 50%; width: 11px; height: 11px;
  transform: translateY(-50%);
  border-radius: 50%;
  border: 1.5px solid var(--cyan-400);
  opacity: .8;
}
.hero__points li::after {
  content: ""; position: absolute; left: 3px; top: 50%; width: 5px; height: 5px;
  transform: translateY(-50%);
  border-radius: 50%; background: var(--cyan-400);
}

/* --- Hero 产品示意（纯 CSS，无截图依赖） --- */
.hero__preview { position: relative; perspective: 1400px; }

.mock {
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, .1), rgba(255, 255, 255, .04));
  border: 1px solid rgba(255, 255, 255, .14);
  box-shadow: 0 40px 90px rgba(0, 0, 0, .5);
  backdrop-filter: blur(14px);
  overflow: hidden;
  transform: rotateY(-9deg) rotateX(5deg) translateY(0);
  transition: transform var(--dur-3) var(--ease);
}
.hero__preview:hover .mock { transform: rotateY(-4deg) rotateX(2deg) translateY(-6px); }

.mock__bar {
  display: flex; align-items: center; gap: var(--sp-3);
  padding: 11px var(--sp-4);
  background: rgba(255, 255, 255, .05);
  border-bottom: 1px solid var(--d-line);
}
.mock__dots { display: flex; gap: 6px; }
.mock__dots i { width: 9px; height: 9px; border-radius: 50%; background: rgba(255, 255, 255, .18); }
.mock__dots i:first-child { background: rgba(255, 255, 255, .3); }
.mock__addr { font-size: 11.5px; color: var(--d3); letter-spacing: .02em; }

.mock__body { display: grid; grid-template-columns: 52px 1fr; gap: var(--sp-4); padding: var(--sp-4); }
.mock__side { display: flex; flex-direction: column; gap: 9px; padding-top: 4px; }
.mock__side span { height: 9px; border-radius: 4px; background: rgba(255, 255, 255, .12); }
.mock__side span.is-active { background: linear-gradient(90deg, var(--blue-500), var(--cyan-400)); height: 11px; }

.mock__kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-3); }
.mock__kpi {
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(255, 255, 255, .06);
  border: 1px solid var(--d-line);
}
.mock__kpi em { display: block; font-size: 10.5px; font-style: normal; color: var(--d3); }
.mock__kpi b { display: block; margin: 3px 0 1px; font-size: 17px; color: #fff; letter-spacing: -.01em; }
.mock__kpi i { font-size: 10.5px; font-style: normal; color: var(--cyan-400); }

.mock__chart {
  display: flex; align-items: flex-end; gap: 8px;
  height: 92px;
  margin-top: var(--sp-4);
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(255, 255, 255, .04);
  border: 1px solid var(--d-line-2);
}
.mock__chart span {
  flex: 1;
  height: var(--h);
  border-radius: 4px 4px 2px 2px;
  background: linear-gradient(180deg, var(--cyan-400), rgba(37, 99, 235, .5));
  opacity: .85;
  transform-origin: bottom;
  animation: barIn 1s var(--ease) backwards;
}
.mock__chart span:nth-child(1) { animation-delay: .1s; }
.mock__chart span:nth-child(2) { animation-delay: .18s; }
.mock__chart span:nth-child(3) { animation-delay: .26s; }
.mock__chart span:nth-child(4) { animation-delay: .34s; }
.mock__chart span:nth-child(5) { animation-delay: .42s; }
.mock__chart span:nth-child(6) { animation-delay: .5s; }
.mock__chart span:nth-child(7) { animation-delay: .58s; }
@keyframes barIn { from { transform: scaleY(.05); opacity: 0; } }

.mock__rows { display: flex; flex-direction: column; gap: 7px; margin-top: var(--sp-4); }
.mock__row { display: flex; align-items: center; gap: 10px; }
.mock__tag {
  padding: 3px 9px; border-radius: var(--r-full);
  background: rgba(34, 211, 238, .16); color: var(--cyan-400);
  font-size: 10.5px; white-space: nowrap;
}
.mock__tag.is-warn { background: rgba(245, 158, 11, .16); color: #FBBF24; }
.mock__tag.is-info { background: rgba(96, 165, 250, .16); color: var(--blue-400); }
.mock__row i { flex: 1; height: 7px; border-radius: 4px; background: rgba(255, 255, 255, .1); }

.mock__float {
  position: absolute;
  padding: 11px 14px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .95);
  box-shadow: 0 14px 34px rgba(0, 0, 0, .34);
  display: flex; flex-direction: column; gap: 2px;
  animation: floatY 5s ease-in-out infinite;
}
.mock__float b { font-size: 12.5px; color: var(--t1); }
.mock__float span { font-size: 11px; color: var(--t3); }
.mock__float--a { right: -6px; top: 12%; }
.mock__float--b { left: -14px; bottom: 9%; animation-delay: 1.6s; }
@keyframes floatY { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

/* ---------------- 统计条 ---------------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-4);
  margin-top: clamp(48px, 6vw, 80px);
  padding-top: var(--sp-8);
  border-top: 1px solid var(--d-line);
}
.stats li { text-align: center; }
.stats b {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 700;
  letter-spacing: -.02em;
  color: #fff;
  line-height: 1.2;
}
.stats span { font-size: 13px; color: var(--d3); }

/* ---------------- 定位区分 ---------------- */
.positioning { background: var(--surface); }

.compare { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-5); align-items: stretch; }

.compare__col {
  position: relative;
  padding: var(--sp-8) var(--sp-6);
  border-radius: var(--r-lg);
  background: var(--surface-2);
  border: 1px solid var(--line);
  transition: transform var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease);
}
.compare__col:hover { transform: translateY(-3px); box-shadow: var(--sh-1); }

.compare__col.is-primary {
  background: linear-gradient(165deg, #101A2C 0%, #060A12 100%);
  border-color: transparent;
  box-shadow: var(--sh-2);
}
.compare__col.is-primary::after {
  content: "";
  position: absolute; inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(140deg, rgba(34, 211, 238, .6), rgba(37, 99, 235, .35), transparent 70%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.compare__label {
  display: inline-block;
  padding: 4px 11px;
  border-radius: var(--r-full);
  background: var(--surface-3);
  color: var(--t3);
  font-size: 12px;
  font-weight: 600;
}
.compare__label.is-primary { background: rgba(34, 211, 238, .14); color: var(--cyan-400); }

.compare__col h3 { margin-top: var(--sp-4); font-size: clamp(18px, 1.8vw, 21px); letter-spacing: -.01em; }
.compare__desc { margin-top: var(--sp-3); font-size: 14.5px; color: var(--t2); }

.compare__col ul { margin-top: var(--sp-5); padding-top: var(--sp-5); border-top: 1px dashed var(--line-strong); display: grid; gap: 10px; }
.compare__col li { position: relative; padding-left: 22px; font-size: 14px; color: var(--t2); line-height: 1.7; }
.compare__col li::before {
  content: ""; position: absolute; left: 0; top: 8px;
  width: 12px; height: 7px;
  border-left: 1.8px solid var(--t3);
  border-bottom: 1.8px solid var(--t3);
  transform: rotate(-45deg);
}
.compare__col.is-primary h3 { color: #fff; }
.compare__col.is-primary .compare__desc { color: var(--d2); }
.compare__col.is-primary ul { border-top-color: var(--d-line); }
.compare__col.is-primary li { color: var(--d2); }
.compare__col.is-primary li::before { border-color: var(--cyan-400); }

/* ---------------- 功能卡片 ---------------- */
.features { background: var(--surface-2); }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--sp-5); }

.card {
  position: relative;
  padding: var(--sp-8) var(--sp-6);
  border-radius: var(--r-lg);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: 0 1px 2px rgba(11, 18, 32, .03);
  transition: transform var(--dur-2) var(--ease),
              box-shadow var(--dur-2) var(--ease),
              border-color var(--dur-2) var(--ease);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sh-2);
  border-color: var(--line-strong);
}
.card__icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--blue-soft);
  color: var(--blue-600);
  transition: background-color var(--dur-2) var(--ease), color var(--dur-2) var(--ease);
}
.card__icon svg { width: 23px; height: 23px; }
.card:hover .card__icon { background: linear-gradient(140deg, var(--blue-500), var(--cyan-400)); color: #fff; }
.card h3 { margin-top: var(--sp-5); font-size: 17.5px; letter-spacing: -.01em; }
.card p { margin-top: var(--sp-3); font-size: 14.5px; line-height: 1.78; color: var(--t2); }

/* 重点卡片（营销中心 / AI 助手） */
.card.is-accent { background: linear-gradient(170deg, #FFFFFF 0%, var(--cyan-soft) 100%); border-color: #CFEFF7; }
.card.is-accent .card__icon { background: rgba(6, 182, 212, .14); color: #0E7490; }

/* ---------------- 亮点 ---------------- */
.highlights { background: var(--surface); }

.hl { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 0; border-top: 1px solid var(--line); }
.hl__item {
  position: relative;
  padding: var(--sp-8) var(--sp-6) var(--sp-8) 0;
  border-bottom: 1px solid var(--line);
  transition: background-color var(--dur-2) var(--ease);
}
.hl__item:nth-child(odd) { border-right: 1px solid var(--line); padding-right: var(--sp-8); }
.hl__item:nth-child(even) { padding-left: var(--sp-8); }
.hl__item:hover { background: var(--surface-2); }
.hl__no {
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--cyan-500);
}
.hl__item h3 { margin-top: 10px; font-size: 17px; letter-spacing: -.01em; }
.hl__item p { margin-top: 10px; font-size: 14.5px; line-height: 1.78; color: var(--t2); }

/* ---------------- 场景 ---------------- */
.scenes { background: var(--ink-800); color: var(--d1); overflow: hidden; }
.scenes .section__title { color: #fff; }
.scenes .section__desc { color: var(--d2); }
.scenes .eyebrow { background: rgba(34, 211, 238, .13); color: var(--cyan-400); }

.scenes__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: var(--sp-5); }

.scene {
  padding: var(--sp-8) var(--sp-6);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .03));
  border: 1px solid var(--d-line);
  transition: transform var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease), background-color var(--dur-2) var(--ease);
}
.scene:hover { transform: translateY(-4px); border-color: rgba(34, 211, 238, .38); }
.scene__tag {
  display: inline-block; padding: 4px 11px; border-radius: var(--r-full);
  background: rgba(34, 211, 238, .14); color: var(--cyan-400);
  font-size: 12px; font-weight: 600;
}
.scene h3 { margin-top: var(--sp-5); font-size: 18px; color: #fff; letter-spacing: -.01em; }
.scene p { margin-top: var(--sp-3); font-size: 14.5px; line-height: 1.78; color: var(--d2); }
.scene ul { margin-top: var(--sp-5); display: grid; gap: 9px; }
.scene li { position: relative; padding-left: 20px; font-size: 13.5px; color: var(--d3); }
.scene li::before {
  content: ""; position: absolute; left: 0; top: 7px;
  width: 8px; height: 8px; border-radius: 2px;
  background: linear-gradient(135deg, var(--cyan-400), var(--blue-500));
}

/* ---------------- 优势对比 ---------------- */
.advantages { background: var(--surface-2); }

.adv { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-5); }
.adv__col { padding: var(--sp-10) var(--sp-8); border-radius: var(--r-lg); border: 1px solid var(--line); }
.adv__col h3 { font-size: clamp(17px, 1.8vw, 20px); letter-spacing: -.01em; }
.adv__col ul { margin-top: var(--sp-6); display: grid; gap: var(--sp-4); }

.adv__col--before { background: var(--surface); }
.adv__col--before h3 { color: var(--t2); }
.adv__col--before li { position: relative; padding-left: 24px; font-size: 14.5px; color: var(--t3); }
.adv__col--before li::before {
  content: "×";
  position: absolute; left: 0; top: -1px;
  width: 16px; height: 16px; border-radius: 50%;
  display: grid; place-items: center;
  background: #F1F4F9; color: #A8B3C4;
  font-size: 11px; font-weight: 700;
}

.adv__col--after {
  background: linear-gradient(170deg, #FFFFFF 0%, var(--blue-soft) 100%);
  border-color: #CFDEFF;
  box-shadow: var(--sh-1);
}
.adv__col--after h3 { color: var(--blue-700); }
.adv__col--after li { position: relative; padding-left: 26px; font-size: 14.5px; color: var(--t1); }
.adv__col--after li::before {
  content: "";
  position: absolute; left: 0; top: 5px;
  width: 13px; height: 8px;
  border-left: 2px solid var(--blue-600);
  border-bottom: 2px solid var(--blue-600);
  transform: rotate(-45deg);
}

.trust {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: var(--sp-5);
  margin-top: var(--sp-8);
  padding-top: var(--sp-8);
  border-top: 1px solid var(--line);
}
.trust__item { display: flex; flex-direction: column; gap: 8px; }
.trust__item b { font-size: 15px; color: var(--t1); }
.trust__item b::before {
  content: ""; display: inline-block; width: 6px; height: 6px; margin-right: 8px;
  border-radius: 50%; background: linear-gradient(135deg, var(--blue-600), var(--cyan-400));
  vertical-align: middle;
}
.trust__item span { font-size: 13.5px; line-height: 1.75; color: var(--t2); }

/* ---------------- 品牌故事 ---------------- */
.brandstory { background: var(--surface); overflow: hidden; }
.brandstory__inner { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: clamp(32px, 6vw, 80px); align-items: center; }
.brandstory__copy p { margin-top: var(--sp-5); font-size: 15.5px; line-height: 1.9; color: var(--t2); max-width: 620px; }
.brandstory__copy p strong { color: var(--t1); }

.brandstory__values { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-5); margin-top: var(--sp-8); padding-top: var(--sp-8); border-top: 1px solid var(--line); }
.brandstory__values li { display: flex; flex-direction: column; gap: 5px; }
.brandstory__values b { font-size: 15px; color: var(--blue-700); }
.brandstory__values span { font-size: 13px; line-height: 1.7; color: var(--t3); }

.brandstory__visual { position: relative; display: grid; place-items: center; min-height: 340px; }
.orb { position: absolute; border-radius: 50%; filter: blur(46px); }
.orb--1 { width: 260px; height: 260px; background: rgba(37, 99, 235, .3); top: 6%; left: 6%; }
.orb--2 { width: 220px; height: 220px; background: rgba(34, 211, 238, .26); bottom: 4%; right: 4%; }

/* 镜片意象：同心环 + 高光 */
.lens {
  position: relative;
  width: clamp(220px, 26vw, 300px);
  aspect-ratio: 1;
  border-radius: 50%;
  display: grid; place-items: center;
  background: radial-gradient(circle at 32% 26%, rgba(255, 255, 255, .9), rgba(239, 245, 255, .5) 42%, rgba(37, 99, 235, .12) 72%);
  border: 1px solid rgba(37, 99, 235, .18);
  box-shadow: inset 0 0 60px rgba(37, 99, 235, .1), 0 30px 70px rgba(37, 99, 235, .16);
  animation: lensFloat 7s ease-in-out infinite;
}
@keyframes lensFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

.lens__ring {
  position: absolute; inset: 14%;
  border-radius: 50%;
  border: 1px dashed rgba(37, 99, 235, .3);
}
.lens__gloss {
  position: absolute; top: 14%; left: 18%;
  width: 34%; height: 22%;
  border-radius: 50%;
  background: linear-gradient(120deg, rgba(255, 255, 255, .95), rgba(255, 255, 255, 0));
  filter: blur(3px);
  transform: rotate(-24deg);
}
.lens__core {
  font-size: 17px; font-weight: 700; letter-spacing: .1em;
  color: var(--blue-700);
}

/* ---------------- 案例 ---------------- */
.cases { background: var(--surface-2); }
.cases__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--sp-5); }

.case {
  display: flex; flex-direction: column;
  padding: var(--sp-8) var(--sp-6);
  border-radius: var(--r-lg);
  background: var(--surface);
  border: 1px solid var(--line);
  transition: transform var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease);
}
.case:hover { transform: translateY(-4px); box-shadow: var(--sh-1); }
.case__quote {
  font-size: 44px; line-height: .6;
  font-family: Georgia, serif;
  color: var(--cyan-400);
}
.case__text { margin-top: var(--sp-4); font-size: 15px; line-height: 1.85; color: var(--t2); flex: 1; }
.case__meta { display: flex; align-items: center; gap: var(--sp-3); margin-top: var(--sp-6); padding-top: var(--sp-5); border-top: 1px solid var(--line); }
.case__avatar {
  width: 40px; height: 40px; border-radius: 12px;
  display: grid; place-items: center;
  background: linear-gradient(140deg, var(--blue-500), var(--cyan-400));
  color: #fff; font-size: 14px; font-weight: 700;
  flex-shrink: 0;
}
.case__meta b { display: block; font-size: 14px; }
.case__meta em { font-size: 12.5px; font-style: normal; color: var(--t3); }

/* ---------------- 价格 ---------------- */
.pricing { background: var(--surface); }
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: var(--sp-5); align-items: stretch; }

.plan {
  position: relative;
  display: flex; flex-direction: column;
  padding: var(--sp-8) var(--sp-6);
  border-radius: var(--r-lg);
  background: var(--surface);
  border: 1px solid var(--line);
  transition: transform var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease);
}
.plan:hover { transform: translateY(-4px); box-shadow: var(--sh-1); border-color: var(--line-strong); }

.plan.is-featured {
  background: linear-gradient(175deg, #FFFFFF 0%, var(--blue-soft) 100%);
  border-color: var(--blue-400);
  box-shadow: var(--sh-2);
}
.plan__flag {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  padding: 5px 14px; border-radius: var(--r-full);
  background: linear-gradient(100deg, var(--blue-600), var(--cyan-500));
  color: #fff; font-size: 12px; font-weight: 600;
  white-space: nowrap;
  box-shadow: var(--sh-blue);
}

.plan h3 { font-size: 17px; letter-spacing: -.01em; }
.plan__price { display: flex; align-items: baseline; gap: 6px; margin: var(--sp-5) 0 var(--sp-6); }
.plan__price b { font-family: var(--font-num); font-size: clamp(30px, 3vw, 38px); font-weight: 700; letter-spacing: -.03em; color: var(--t1); }
.plan__price em { font-size: 13.5px; font-style: normal; color: var(--t3); }

.plan ul { flex: 1; display: grid; gap: 11px; margin-bottom: var(--sp-8); }
.plan li { position: relative; padding-left: 22px; font-size: 14px; line-height: 1.7; color: var(--t2); }
.plan li::before {
  content: ""; position: absolute; left: 0; top: 6px;
  width: 12px; height: 7px;
  border-left: 1.8px solid var(--blue-500);
  border-bottom: 1.8px solid var(--blue-500);
  transform: rotate(-45deg);
}
.plan li b { color: var(--blue-700); }

.pricing__note {
  margin-top: var(--sp-8);
  padding: var(--sp-4) var(--sp-5);
  border-radius: var(--r-md);
  background: var(--surface-2);
  font-size: 13px;
  line-height: 1.8;
  color: var(--t3);
}

/* ---------------- 合作方式 ---------------- */
.partner { background: var(--surface-2); }
.partner__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--sp-5); }

.partner__item {
  display: flex; flex-direction: column;
  padding: var(--sp-8) var(--sp-6);
  border-radius: var(--r-lg);
  background: var(--surface);
  border: 1px solid var(--line);
  transition: transform var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease);
}
.partner__item:hover { transform: translateY(-4px); box-shadow: var(--sh-1); }
.partner__no { font-family: var(--font-num); font-size: 13px; font-weight: 700; letter-spacing: .06em; color: var(--cyan-500); }
.partner__item h3 { margin-top: 10px; font-size: 18px; letter-spacing: -.01em; }
.partner__item > p { margin-top: var(--sp-3); font-size: 14.5px; line-height: 1.78; color: var(--t2); }
.partner__item ul { flex: 1; margin: var(--sp-5) 0 var(--sp-6); display: grid; gap: 9px; }
.partner__item li { position: relative; padding-left: 18px; font-size: 13.5px; color: var(--t2); }
.partner__item li::before {
  content: ""; position: absolute; left: 0; top: 8px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--cyan-400);
}

/* ---------------- 联系方式 ---------------- */
.contact { background: var(--surface); }
.contact__inner { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 440px); gap: clamp(32px, 6vw, 72px); align-items: start; }

.contact__list { margin-top: var(--sp-8); display: grid; gap: var(--sp-5); }
.contact__list li { display: flex; gap: var(--sp-4); align-items: flex-start; }
.contact__ico {
  width: 40px; height: 40px; flex-shrink: 0;
  border-radius: 11px;
  display: grid; place-items: center;
  background: var(--blue-soft); color: var(--blue-600);
}
.contact__ico svg { width: 20px; height: 20px; }
.contact__list b { display: block; font-size: 14.5px; }
.contact__list em { font-size: 13.5px; font-style: normal; color: var(--t2); }
/* 电话 / 邮箱可直接点击拨号、发信 */
.contact__list em a {
  color: var(--blue-700);
  border-bottom: 1px dashed rgba(37, 99, 235, .34);
  transition: color var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease);
}
.contact__list em a:hover { color: var(--blue-600); border-bottom-color: var(--blue-500); }

.form {
  padding: var(--sp-8);
  border-radius: var(--r-xl);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--sh-2);
}
.form__title { font-size: 20px; letter-spacing: -.01em; }
.field { margin-top: var(--sp-5); }
.field label { display: block; margin-bottom: 7px; font-size: 13.5px; font-weight: 600; color: var(--t2); }
.field input, .field select, .field textarea {
  width: 100%;
  min-height: 46px;
  padding: 11px 14px;
  border-radius: 11px;
  border: 1.5px solid var(--line-strong);
  background: var(--surface-2);
  font-size: 15px;
  transition: border-color var(--dur-2) var(--ease), background-color var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease);
}
.field textarea { resize: vertical; min-height: 88px; line-height: 1.7; }
.field input::placeholder, .field textarea::placeholder { color: var(--t3); }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  background: var(--surface);
  border-color: var(--blue-500);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, .12);
}
.field.is-error input, .field.is-error select { border-color: #EF4444; background: #FEF2F2; }
/* 校验错误提示（由 main.js 动态插入） */
.field__err { display: block; margin-top: 6px; font-size: 12.5px; font-style: normal; color: #DC2626; }
.field__err:empty { display: none; }

.form .btn { margin-top: var(--sp-6); }
.btn[disabled] { opacity: .68; cursor: not-allowed; pointer-events: none; }
.form__tip { margin-top: var(--sp-4); font-size: 12px; line-height: 1.7; color: var(--t3); }
.form__ok {
  margin-top: var(--sp-4);
  padding: 11px 14px;
  border-radius: 11px;
  background: #ECFDF5; color: #047857;
  font-size: 13.5px; font-weight: 600;
}

/* ---------------- 底部 CTA ---------------- */
.cta {
  position: relative;
  padding: clamp(64px, 8vw, 104px) 0;
  background: var(--ink-900);
  overflow: hidden;
  isolation: isolate;
  text-align: center;
}
.cta__glow {
  position: absolute; left: 50%; top: 50%;
  width: min(900px, 110vw); aspect-ratio: 1.4;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle at 50% 50%, rgba(37, 99, 235, .34), transparent 62%);
  filter: blur(14px);
  z-index: -1;
}
.cta h2 { font-size: clamp(24px, 3.2vw, 40px); line-height: 1.28; letter-spacing: -.02em; color: #fff; }
.cta p { margin-top: var(--sp-5); font-size: clamp(15px, 1.5vw, 17px); color: var(--d2); }
.cta__actions { display: flex; flex-wrap: wrap; gap: var(--sp-4); justify-content: center; margin-top: var(--sp-8); }

/* ---------------- Footer ---------------- */
.footer { background: var(--ink-900); border-top: 1px solid var(--d-line-2); padding-top: clamp(48px, 6vw, 72px); }
.footer__inner { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.4fr); gap: clamp(32px, 5vw, 64px); }
.footer__brand p { margin-top: var(--sp-4); font-size: 13.5px; color: var(--d3); max-width: 300px; }
.footer__brand .brand__text strong { color: #fff; }
.footer__brand .brand__text em { color: var(--d3); }

.footer__nav { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-6); }
.footer__nav b { display: block; margin-bottom: var(--sp-4); font-size: 13.5px; color: #fff; }
.footer__nav a { display: block; margin-bottom: 10px; font-size: 13.5px; color: var(--d3); transition: color var(--dur-2) var(--ease); }
.footer__nav a:hover { color: var(--cyan-400); }

.footer__bottom {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--sp-3);
  margin-top: clamp(40px, 5vw, 64px);
  padding: var(--sp-6) var(--sp-6) var(--sp-8);
  border-top: 1px solid var(--d-line-2);
  font-size: 12.5px; color: var(--d3);
}

/* ---------------- 回到顶部 ---------------- */
.totop {
  position: fixed; right: 22px; bottom: 22px; z-index: 90;
  width: 44px; height: 44px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: rgba(255, 255, 255, .92);
  color: var(--t2);
  border: 1px solid var(--line);
  box-shadow: var(--sh-1);
  backdrop-filter: blur(10px);
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: opacity var(--dur-2) var(--ease), transform var(--dur-2) var(--ease), visibility var(--dur-2);
}
.totop svg { width: 17px; height: 17px; }
.totop.is-show { opacity: 1; visibility: visible; transform: translateY(0); }
.totop:hover { color: var(--blue-700); border-color: var(--blue-400); }

/* ---------------- 滚动进场 ---------------- */
.reveal { opacity: 0; transform: translateY(22px); }
.reveal.is-in {
  opacity: 1;
  transform: none;
  transition: opacity 620ms var(--ease), transform 620ms var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal.is-in { opacity: 1; transform: none; transition: none; }
  .mock__float, .lens, .mock__chart span { animation: none !important; }
  html { scroll-behavior: auto; }
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
  .hero__inner { grid-template-columns: 1fr; gap: var(--sp-12); }
  .hero__sub { max-width: none; }
  .hero__preview { order: 2; max-width: 620px; }
  .hero__copy { order: 1; }

  .brandstory__inner { grid-template-columns: 1fr; }
  .brandstory__visual { min-height: 260px; order: -1; }

  .contact__inner { grid-template-columns: 1fr; }
  .compare { grid-template-columns: 1fr; }
  .compare__col.is-primary { order: -1; }
}

@media (max-width: 860px) {
  :root { --nav-h: 62px; }

  .nav__menu {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: var(--sp-3) var(--sp-6) var(--sp-6);
    background: rgba(255, 255, 255, .97);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 40px rgba(11, 18, 32, .08);
    transform: translateY(-12px);
    opacity: 0; visibility: hidden;
    transition: opacity var(--dur-2) var(--ease), transform var(--dur-2) var(--ease), visibility var(--dur-2);
  }
  .nav.is-open .nav__menu { opacity: 1; visibility: visible; transform: translateY(0); }
  .nav__menu a { padding: 14px 4px; font-size: 16px; color: var(--t1); border-bottom: 1px solid var(--line); border-radius: 0; }
  .nav__menu a:last-child { border-bottom: 0; }
  .nav__menu a:hover { background: none; color: var(--blue-700); }
  /* 移动端菜单用列表分隔线，隐藏下划线式高亮 */
  .nav__menu a.is-active::after { display: none; }
  .nav__menu a.is-active { color: var(--blue-700); }

  .nav__actions { display: none; }
  .nav__toggle { display: flex; }

  .adv { grid-template-columns: 1fr; }
  .adv__col { padding: var(--sp-8) var(--sp-6); }

  .hl__item:nth-child(odd) { border-right: 0; padding-right: 0; }
  .hl__item:nth-child(even) { padding-left: 0; }

  .stats { grid-template-columns: repeat(2, 1fr); gap: var(--sp-6); }
  .brandstory__values { grid-template-columns: 1fr; gap: var(--sp-4); }
  .footer__inner { grid-template-columns: 1fr; }
  .footer__nav { grid-template-columns: repeat(3, 1fr); gap: var(--sp-4); }
  .footer__bottom { flex-direction: column; }

  .mock__float--a { right: 0; top: 8%; }
  .mock__float--b { left: 0; bottom: 6%; }
  .mock { transform: none; }
  .hero__preview:hover .mock { transform: none; }
}

@media (max-width: 560px) {
  .container { padding: 0 var(--sp-5); }
  .hero__cta { flex-direction: column; align-items: stretch; }
  .hero__cta .btn { width: 100%; }
  .cta__actions { flex-direction: column; }
  .cta__actions .btn { width: 100%; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .mock__kpis { grid-template-columns: 1fr 1fr; }
  .mock__kpis .mock__kpi:last-child { display: none; }
  .form { padding: var(--sp-6); }
  .footer__nav { grid-template-columns: 1fr 1fr; }
  .totop { right: 14px; bottom: 14px; }
}