@charset "UTF-8";
/* ==========================================================================
   广州旭群电子科技有限公司 — 官网样式表
   结构：1.设计变量 2.基础重置 3.通用组件 4.页头 5.首页 Hero 6.区块
        7.行业/案例 8.流程 9.表单 10.页脚 11.响应式
   ========================================================================== */

/* 1. 设计变量 ------------------------------------------------------------- */
:root {
  /* 色板 */
  --navy-900: #060D18;
  --navy-800: #08111D;
  --navy-700: #0B1626;
  --navy-600: #102035;
  --ink: #0B1220;
  --text: #16233A;
  --muted: #5A6B7E;
  --line: #E4EBF3;
  --soft: #F5F8FC;
  --white: #FFFFFF;

  --accent: #22D3EE;
  --accent-deep: #0891B2;
  --blue: #3B82F6;

  --grad: linear-gradient(135deg, #22D3EE 0%, #3B82F6 100%);
  --grad-text: linear-gradient(110deg, #A9F4FF 0%, #22D3EE 42%, #60A5FA 100%);

  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;

  --shadow-sm: 0 1px 2px rgba(16, 32, 53, .05), 0 10px 26px -16px rgba(16, 32, 53, .16);
  --shadow-lg: 0 30px 70px -40px rgba(6, 13, 24, .7);

  --container: 1200px;
  --header-h: 72px;
  --ease: cubic-bezier(.22, 1, .36, 1);

  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Hiragino Sans GB",
    "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
}

/* 2. 基础重置 ------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.68;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -.015em;
  color: var(--ink);
}

p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
strong, b { font-weight: 700; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

::selection { background: rgba(34, 211, 238, .28); }

/* 3. 通用组件 ------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

.container--narrow { max-width: 920px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .01em;
  white-space: nowrap;
  cursor: pointer;
  transition: transform .25s var(--ease), background-color .25s, box-shadow .25s,
    border-color .25s, color .25s;
}

.btn svg { width: 17px; height: 17px; flex: 0 0 auto; }

.btn--primary {
  background: var(--grad);
  color: #04131D;
  box-shadow: 0 12px 26px -14px rgba(34, 211, 238, .85);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 34px -14px rgba(34, 211, 238, .95);
}

.btn--ghost {
  border-color: rgba(255, 255, 255, .22);
  background: rgba(255, 255, 255, .04);
  color: #fff;
}
.btn--ghost:hover {
  background: rgba(255, 255, 255, .1);
  border-color: rgba(255, 255, 255, .42);
}

.btn--dark { background: var(--ink); color: #fff; }
.btn--dark:hover { transform: translateY(-2px); background: #16233A; }

.btn--outline {
  border-color: #D3DEEB;
  background: #fff;
  color: var(--ink);
}
.btn--outline:hover { border-color: #A9C4DA; background: #F7FAFD; }

.btn--lg { height: 52px; padding: 0 28px; font-size: 16px; }

.btn--sm { height: 40px; padding: 0 18px; font-size: 14px; }

/* 眉标 */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent-deep);
}
.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 4px rgba(34, 211, 238, .16);
}
.eyebrow--light { color: #7DE8F7; }
.eyebrow--light::before { box-shadow: 0 0 0 4px rgba(34, 211, 238, .14); }

.section {
  padding: 96px 0;
}
.section--soft { background: var(--soft); }
.section--tight { padding: 68px 0; }
.section--dark {
  background: var(--navy-800);
  color: rgba(255, 255, 255, .72);
  position: relative;
  overflow: hidden;
}
.section--dark h2,
.section--dark h3,
.section--dark h4 { color: #fff; }

.section-head { max-width: 720px; margin-bottom: 52px; }
.section-head h2 {
  margin-top: 16px;
  font-size: clamp(26px, 3vw, 38px);
}
.section-head .lede {
  margin-top: 16px;
  font-size: 16.5px;
  color: var(--muted);
}
.section--dark .section-head .lede { color: rgba(255, 255, 255, .62); }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head--center .eyebrow { justify-content: center; }

.grad { background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* 栅格 */
.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 60px;
  align-items: center;
}

/* 卡片 */
.card {
  position: relative;
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  border-radius: var(--radius) var(--radius) 0 0;
  background: var(--grad);
  opacity: 0;
  transition: opacity .35s;
}
.card:hover {
  transform: translateY(-4px);
  border-color: #CFE6F2;
  box-shadow: 0 26px 54px -34px rgba(11, 18, 32, .45);
}
.card:hover::before { opacity: 1; }

.card h3 { font-size: 18.5px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 14.5px; }

.card-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 18px;
  border-radius: 12px;
  background: linear-gradient(140deg, rgba(34, 211, 238, .16), rgba(59, 130, 246, .1));
  color: var(--accent-deep);
}
.card-icon svg { width: 24px; height: 24px; }

.ticks { display: grid; gap: 9px; margin-top: 18px; }
.ticks li {
  position: relative;
  padding-left: 18px;
  font-size: 13.6px;
  color: #43536B;
  line-height: 1.6;
}
.ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--grad);
}

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 11px;
  border: 1px solid rgba(34, 211, 238, .26);
  border-radius: 999px;
  background: rgba(34, 211, 238, .09);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: .02em;
  color: #0E7490;
}
.tag--light { color: #9DEEFB; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }

/* 数字指标 */
.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}
.metric b {
  display: block;
  font-size: clamp(26px, 3vw, 34px);
  line-height: 1.1;
  letter-spacing: -.02em;
  white-space: nowrap;
}
.metric span { display: block; margin-top: 8px; font-size: 13.5px; color: var(--muted); }
.metrics--light { border-top: 1px solid rgba(255, 255, 255, .1); padding-top: 28px; }
.metrics--light .metric b { color: #fff; }
.metrics--light .metric span { color: rgba(255, 255, 255, .5); }

/* 滚动进场 */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}
.js [data-reveal].is-visible { opacity: 1; transform: none; }

/* 4. 页头 ---------------------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  background: rgba(6, 13, 24, .6);
  border-bottom: 1px solid rgba(255, 255, 255, .07);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  transition: background-color .3s, box-shadow .3s, border-color .3s;
}
.site-header.is-scrolled {
  background: rgba(6, 13, 24, .95);
  border-bottom-color: rgba(255, 255, 255, .1);
  box-shadow: 0 18px 40px -30px rgba(0, 0, 0, .9);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  height: var(--header-h);
}

.brand { display: flex; align-items: center; gap: 12px; color: #fff; }
.brand-mark { width: 38px; height: 38px; flex: 0 0 auto; }
.brand-text strong {
  display: block;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: .04em;
  color: #fff;
}
.brand-text em {
  display: block;
  margin-top: 4px;
  font-size: 9px;
  font-style: normal;
  letter-spacing: .19em;
  color: rgba(255, 255, 255, .42);
  text-transform: uppercase;
}

.nav { margin-left: auto; }
.nav ul { display: flex; align-items: center; gap: 4px; }
.nav a {
  display: block;
  padding: 9px 14px;
  border-radius: 10px;
  font-size: 15px;
  color: rgba(255, 255, 255, .72);
  transition: color .2s, background-color .2s, box-shadow .2s;
}
.nav a:hover { color: #fff; background: rgba(255, 255, 255, .06); }
.nav a.is-active {
  color: #E8FDFF;
  background: rgba(34, 211, 238, .13);
  box-shadow: inset 0 0 0 1px rgba(34, 211, 238, .24);
}

.header-actions { display: flex; align-items: center; gap: 10px; margin-left: 6px; }
.header-actions .btn { height: 40px; padding: 0 18px; font-size: 14px; }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 12px;
  background: transparent;
  cursor: pointer;
}
.nav-toggle span {
  position: relative;
  display: block;
  width: 18px;
  height: 1.5px;
  background: #fff;
  border-radius: 2px;
  transition: transform .3s var(--ease), background-color .3s;
}
.nav-toggle span + span { margin-top: 5px; }
body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* 5. 首页 Hero ----------------------------------------------------------- */
.hero {
  position: relative;
  padding: calc(var(--header-h) + 76px) 0 84px;
  background:
    radial-gradient(980px 520px at 78% -12%, rgba(34, 211, 238, .2), transparent 62%),
    radial-gradient(760px 460px at 4% 8%, rgba(59, 130, 246, .18), transparent 66%),
    linear-gradient(180deg, #060D18 0%, #0A1626 58%, #08111D 100%);
  color: #fff;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(circle at 52% 26%, #000 0%, transparent 74%);
  mask-image: radial-gradient(circle at 52% 26%, #000 0%, transparent 74%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.04fr .96fr;
  gap: 56px;
  align-items: center;
}

.hero h1 {
  margin-top: 20px;
  font-size: clamp(32px, 4.4vw, 56px);
  line-height: 1.14;
  letter-spacing: -.02em;
  color: #fff;
}
.hero .lede {
  margin-top: 22px;
  max-width: 560px;
  font-size: 17px;
  line-height: 1.75;
  color: rgba(255, 255, 255, .7);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 34px;
  font-size: 13px;
  color: rgba(255, 255, 255, .5);
}
.hero-trust span { display: inline-flex; align-items: center; gap: 8px; }
.hero-trust span::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: .8;
}

.hero-visual { position: relative; }
.board-card {
  position: relative;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(255, 255, 255, .1), rgba(255, 255, 255, .02));
  box-shadow: var(--shadow-lg);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.board-card svg { width: 100%; height: auto; border-radius: 14px; }

.float-card {
  position: absolute;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 10px 14px;
  border: 1px solid rgba(34, 211, 238, .28);
  border-radius: 12px;
  background: rgba(8, 17, 29, .92);
  box-shadow: 0 20px 40px -24px rgba(0, 0, 0, .9);
  font-size: 12.5px;
  color: #D8F8FF;
  white-space: nowrap;
  animation: floaty 7s ease-in-out infinite;
}
.float-card svg { width: 15px; height: 15px; color: var(--accent); }
.float-card--a { top: -18px; right: -8px; }
.float-card--b { bottom: 46px; left: -30px; animation-delay: -2.4s; }
.float-card--c { bottom: -16px; right: 26px; animation-delay: -4.2s; }

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

/* 6. 区块：服务 / 能力 ---------------------------------------------------- */
.service-card { display: flex; flex-direction: column; }
.service-card .ticks { margin-top: auto; padding-top: 18px; }

.why-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px 36px; }
.why-item { display: flex; gap: 14px; }
.why-item .idx {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
  padding-top: 6px;
  color: var(--accent-deep);
  letter-spacing: .06em;
}
.why-item h4 { font-size: 16px; margin-bottom: 6px; }
.why-item p { font-size: 13.8px; color: var(--muted); line-height: 1.65; }

/* 引言 */
.quote {
  margin: 34px 0 0;
  padding: 2px 0 2px 18px;
  border-left: 2px solid rgba(34, 211, 238, .55);
}
.quote p {
  font-size: 15px;
  line-height: 1.8;
  color: #33445C;
}
.quote figcaption {
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: .04em;
  color: #8B9AAD;
}

/* 7. 行业与案例 ---------------------------------------------------------- */
.industry-card {
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(255, 255, 255, .09);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, #0B1624, #0D1B2C);
  overflow: hidden;
  transition: transform .4s var(--ease), border-color .4s, box-shadow .4s;
}
.industry-card:hover {
  transform: translateY(-5px);
  border-color: rgba(34, 211, 238, .34);
  box-shadow: 0 34px 70px -40px rgba(34, 211, 238, .5);
}
.industry-media {
  position: relative;
  height: 178px;
  display: grid;
  place-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, .06);
  background:
    radial-gradient(320px 160px at 50% 110%, rgba(34, 211, 238, .16), transparent 70%),
    #0A1522;
  overflow: hidden;
}
.industry-media svg { width: 100%; height: 100%; }
.industry-body { padding: 26px 26px 28px; display: flex; flex-direction: column; flex: 1; }
.industry-body h3 { font-size: 20px; color: #fff; }
.industry-body > p { margin-top: 8px; font-size: 13.8px; color: rgba(255, 255, 255, .58); }
.industry-body .ticks { margin-top: 18px; }
.industry-body .ticks li { color: rgba(255, 255, 255, .76); font-size: 13.4px; }
.industry-body .tags { margin-top: auto; padding-top: 20px; }
.industry-body .tags .tag {
  color: #A6EFFB;
  border-color: rgba(34, 211, 238, .2);
  background: rgba(34, 211, 238, .07);
}

.case-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  overflow: hidden;
  transition: transform .35s var(--ease), box-shadow .35s;
}
.case-card:hover { transform: translateY(-4px); box-shadow: 0 30px 60px -40px rgba(11, 18, 32, .5); }
.case-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: linear-gradient(120deg, #0A1524, #12263C);
  color: #fff;
}
.case-top span { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: rgba(255, 255, 255, .5); }
.case-top b { font-size: 22px; letter-spacing: -.01em; color: #8DEEFB; }
.case-body { padding: 22px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.case-body h3 { font-size: 17px; margin-bottom: 8px; }
.case-body p { font-size: 13.8px; color: var(--muted); }
.case-body .tags { margin-top: auto; padding-top: 18px; }

.note {
  margin-top: 26px;
  font-size: 12.5px;
  color: #8B9AAD;
}

/* 交付边界说明块 */
.boundary {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-top: 28px;
  padding: 22px 26px;
  border: 1px dashed rgba(8, 145, 178, .32);
  border-radius: 14px;
  background: rgba(34, 211, 238, .045);
}
.boundary-label {
  flex: none;
  padding-top: 3px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .12em;
  white-space: nowrap;
  color: var(--accent-deep);
}
.boundary p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.88;
  color: #4A5C77;
}
.boundary b { color: #16233A; font-weight: 600; }

/* 8. 流程 ---------------------------------------------------------------- */
.process {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0;
}
.process::before {
  content: "";
  position: absolute;
  top: 23px;
  left: 6%;
  right: 6%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(34, 211, 238, .45), rgba(34, 211, 238, .45), transparent);
}
.step { position: relative; padding-right: 22px; }
.step:last-child { padding-right: 0; }
.step-num {
  position: relative;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 1px solid rgba(34, 211, 238, .34);
  border-radius: 50%;
  background: rgba(34, 211, 238, .08);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: #9FF2FF;
  letter-spacing: .04em;
}
.step h3 { margin: 20px 0 8px; font-size: 15.5px; color: #fff; }
.step p { font-size: 13.4px; color: rgba(255, 255, 255, .58); line-height: 1.65; }

/* 浅色流程 */
.process--light::before {
  background: linear-gradient(90deg, transparent, #CBE7F1, #CBE7F1, transparent);
}
.process--light .step-num {
  background: #fff;
  border-color: #C9E5F0;
  color: var(--accent-deep);
  box-shadow: 0 10px 22px -18px rgba(8, 145, 178, .8);
}
.process--light .step h3 { color: var(--ink); }
.process--light .step p { color: var(--muted); }

/* FAQ */
.faq { display: grid; gap: 12px; }
.faq details {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  padding: 0 22px;
  transition: border-color .25s, box-shadow .25s;
}
.faq details[open] { border-color: #CFE6F2; box-shadow: 0 18px 40px -32px rgba(11, 18, 32, .5); }
.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  flex: 0 0 auto;
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
  color: var(--accent-deep);
  transition: transform .25s;
}
.faq details[open] summary::after { content: "−"; }
.faq .faq-body { padding: 0 0 20px; font-size: 14.5px; color: var(--muted); line-height: 1.75; }

/* 404 */
.error-page {
  display: grid;
  place-items: center;
  min-height: 100dvh;
  padding: calc(var(--header-h) + 60px) 0 80px;
  background:
    radial-gradient(700px 400px at 50% 0%, rgba(34, 211, 238, .16), transparent 65%),
    linear-gradient(180deg, #060D18, #0A1626);
  color: #fff;
  text-align: center;
}
.error-page h1 { margin-top: 22px; font-size: clamp(30px, 5vw, 52px); color: #fff; }
.error-page p { margin-top: 14px; color: rgba(255, 255, 255, .6); }
.error-code {
  font-family: var(--font-mono);
  font-size: clamp(64px, 12vw, 120px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.04em;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* 交付物列表 */
.deliverables {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 26px;
  margin-top: 26px;
}
.deliverables li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  color: #3E4E66;
}
.deliverables li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad);
}

/* CTA 区块 */
.cta-band {
  position: relative;
  display: grid;
  grid-template-columns: 1.5fr auto;
  gap: 28px;
  align-items: center;
  padding: 52px 56px;
  border-radius: 24px;
  background:
    radial-gradient(600px 300px at 92% 0%, rgba(34, 211, 238, .22), transparent 68%),
    linear-gradient(115deg, #08111D, #0F2438 58%, #0A1C2C);
  color: #fff;
  overflow: hidden;
}
.cta-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: 40px 40px;
  -webkit-mask-image: radial-gradient(circle at 85% 10%, #000, transparent 70%);
  mask-image: radial-gradient(circle at 85% 10%, #000, transparent 70%);
  pointer-events: none;
}
.cta-band > * { position: relative; z-index: 2; }
.cta-band h2 { font-size: clamp(24px, 2.6vw, 34px); color: #fff; }
.cta-band p { margin-top: 12px; max-width: 560px; font-size: 15px; color: rgba(255, 255, 255, .66); }
.cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* 面包屑 / 内页头部 */
.page-hero {
  position: relative;
  padding: calc(var(--header-h) + 66px) 0 62px;
  background:
    radial-gradient(760px 420px at 82% -20%, rgba(34, 211, 238, .18), transparent 62%),
    linear-gradient(180deg, #060D18, #0A1626 70%, #0B1826);
  color: #fff;
  overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(circle at 70% 0%, #000, transparent 76%);
  mask-image: radial-gradient(circle at 70% 0%, #000, transparent 76%);
  pointer-events: none;
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { margin-top: 18px; font-size: clamp(28px, 3.6vw, 44px); color: #fff; }
.page-hero p { margin-top: 16px; max-width: 640px; font-size: 16px; color: rgba(255, 255, 255, .66); }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; font-size: 12.5px; color: rgba(255, 255, 255, .45); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span::before { content: "/"; margin-right: 8px; opacity: .5; }

/* 内页内容块 */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  padding: 60px 0;
  border-bottom: 1px solid var(--line);
}
.feature-row:first-of-type { padding-top: 0; }
.feature-row:last-of-type { border-bottom: 0; padding-bottom: 0; }
.feature-row--reverse .feature-text { order: 2; }
.feature-text h2 { font-size: clamp(23px, 2.6vw, 30px); }
.feature-text > p { margin-top: 14px; font-size: 15px; color: var(--muted); }
.feature-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--accent-deep);
  text-transform: uppercase;
}
.feature-kicker::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  opacity: .6;
}

.feature-panel {
  position: relative;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(420px 240px at 80% 0%, rgba(34, 211, 238, .16), transparent 70%),
    linear-gradient(160deg, #0A1524, #0C1B2B);
  color: rgba(255, 255, 255, .8);
  overflow: hidden;
}
.feature-panel svg { width: 100%; height: auto; }
.feature-panel h4 { font-size: 14px; letter-spacing: .04em; color: #fff; }
.panel-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.panel-icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  border-radius: 10px;
  border: 1px solid rgba(34, 211, 238, .22);
  background: rgba(34, 211, 238, .1);
  color: #8DEEFB;
}
.panel-icon svg { width: 20px; height: 20px; }
.panel-rows { display: grid; gap: 0; margin-top: 6px; }
.panel-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  font-size: 13.5px;
}
.panel-row:last-child { border-bottom: 0; }
.panel-row span { color: rgba(255, 255, 255, .55); }
.panel-row b { color: #9DEEFB; font-weight: 600; text-align: right; }

.info-card {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}
.info-card h3 { font-size: 16px; margin-bottom: 8px; }
.info-card p, .info-card a { font-size: 14.5px; color: var(--muted); }
.info-card a:hover { color: var(--accent-deep); }
.info-card .big { font-size: 20px; font-weight: 700; color: var(--ink); letter-spacing: .01em; }
.info-list { display: grid; gap: 10px; margin-top: 12px; }
.info-list li { display: flex; gap: 10px; font-size: 14px; color: var(--muted); }
.info-list svg { width: 17px; height: 17px; flex: 0 0 auto; margin-top: 4px; color: var(--accent-deep); }

/* 联系页布局 */
.contact-layout {
  grid-template-columns: 1.15fr .85fr;
  gap: 48px;
  align-items: start;
}
.contact-form-card {
  padding: 34px;
  border-radius: 22px;
}

@media (max-width: 980px) {
  .contact-layout { grid-template-columns: 1fr; gap: 26px; }
  .contact-form-card { padding: 26px; }
}

/* 9. 表单 ---------------------------------------------------------------- */
.form { display: grid; gap: 18px; }
.form-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.field { display: grid; gap: 8px; }
.field label { font-size: 13.5px; font-weight: 600; color: #23334C; }
.field label .req { color: #E0574C; margin-left: 2px; }
.field input,
.field select,
.field textarea {
  width: 100%;
  height: 48px;
  padding: 0 14px;
  border: 1px solid #D6E0EC;
  border-radius: var(--radius-sm);
  background: #fff;
  font-family: inherit;
  font-size: 15px;
  color: var(--text);
  transition: border-color .2s, box-shadow .2s;
}
.field select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 42px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5l5-5' fill='none' stroke='%2364748B' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 15px center;
  background-size: 12px 8px;
}
.field textarea { height: auto; min-height: 124px; padding: 12px 14px; resize: vertical; line-height: 1.6; }
.field input::placeholder,
.field textarea::placeholder { color: #A9B6C6; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: #3FC9DE;
  box-shadow: 0 0 0 4px rgba(34, 211, 238, .14);
}
.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"] { border-color: #E0574C; }
.field .err { font-size: 12px; color: #D1433A; min-height: 0; }
.form-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.form-note { font-size: 12.5px; color: #8494A7; }
.form-status {
  display: none;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 13.5px;
  line-height: 1.6;
}
.form-status.is-ok { display: block; background: #ECFDF5; border: 1px solid #A7F3D0; color: #047857; }
.form-status.is-err { display: block; background: #FEF2F2; border: 1px solid #FECACA; color: #B91C1C; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* 10. 页脚 --------------------------------------------------------------- */
.site-footer {
  position: relative;
  padding-top: 64px;
  background: #060D18;
  color: rgba(255, 255, 255, .58);
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.7fr 1fr 1fr 1.25fr;
  gap: 44px;
  padding-bottom: 48px;
}
.footer-brand .brand { margin-bottom: 16px; }
.footer-brand p { max-width: 320px; font-size: 13.6px; line-height: 1.8; color: rgba(255, 255, 255, .5); }
.footer-col h4 {
  margin-bottom: 16px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .92);
}
.footer-col li { margin-bottom: 10px; font-size: 13.8px; }
.footer-col a { transition: color .2s; }
.footer-col a:hover { color: var(--accent); }
.footer-contact li { display: flex; gap: 10px; font-size: 13.8px; line-height: 1.6; }
.footer-contact svg { width: 16px; height: 16px; flex: 0 0 auto; margin-top: 4px; color: rgba(34, 211, 238, .8); }
.footer-contact b { color: #fff; font-weight: 600; font-size: 15px; }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 20px 0 26px;
  border-top: 1px solid rgba(255, 255, 255, .08);
  font-size: 12.5px;
  color: rgba(255, 255, 255, .38);
}
.footer-bottom a:hover { color: rgba(255, 255, 255, .72); }

/* 11. 响应式 -------------------------------------------------------------- */
@media (max-width: 1080px) {
  .footer-grid { grid-template-columns: 1.6fr 1fr 1fr; gap: 36px; }
  .footer-col--contact { grid-column: 1 / -1; }
  .why-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 980px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    display: none;
    margin: 0;
    padding: 14px 20px 22px;
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
    background: #08111D;
    border-bottom: 1px solid rgba(255, 255, 255, .1);
    box-shadow: 0 30px 60px -30px rgba(0, 0, 0, .9);
  }
  body.nav-open .nav { display: block; }
  .nav ul { flex-direction: column; align-items: stretch; gap: 2px; }
  .nav a { padding: 14px 16px; font-size: 16px; border-radius: 12px; }
  .header-actions { margin-left: auto; }
  .header-actions .btn--primary { display: none; }
  .brand { margin-right: auto; }

  .hero { padding-top: calc(var(--header-h) + 54px); }
  .hero-inner { grid-template-columns: 1fr; gap: 54px; }
  .hero-visual { max-width: 560px; }
  .hero-trust { gap: 10px 18px; }

  .split { grid-template-columns: 1fr; gap: 40px; }
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .process { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 34px 20px; }
  .process::before { display: none; }
  .step { padding-right: 0; }
  .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px 20px; }

  .feature-row { grid-template-columns: 1fr; gap: 32px; padding: 44px 0; }
  .feature-row--reverse .feature-text { order: 0; }

  .cta-band { grid-template-columns: 1fr; padding: 40px 32px; }
}

@media (max-width: 720px) {
  .container { padding-inline: 20px; }
  .section { padding: 68px 0; }
  .section--tight { padding: 52px 0; }
  .section-head { margin-bottom: 36px; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .why-list { grid-template-columns: 1fr; }
  .process { grid-template-columns: 1fr; }
  .deliverables { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .float-card--b { left: 0; }
  .float-card--a { right: 0; }
  .card { padding: 24px; }
  .industry-body { padding: 22px 22px 24px; }
  .cta-band { padding: 32px 24px; border-radius: 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
  .hero-visual { display: none; }
  .hero { padding-bottom: 64px; }
  .boundary { flex-direction: column; gap: 8px; padding: 20px; }
}

@media (max-width: 420px) {
  .header-actions .btn { display: none; }
  .metrics { grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .js [data-reveal] { opacity: 1; transform: none; }
}