/* ==========================================================================
   佛山微影科技有限公司 官网样式
   设计语言：简约 · 平面化 · 蓝色为主
   ========================================================================== */

/* ---------- 设计令牌 ---------- */
:root {
  --blue-700: #1d4ed8;
  --blue-600: #2563eb;   /* 主色 */
  --blue-500: #3b82f6;
  --blue-100: #dbeafe;
  --blue-50: #eff6ff;

  --ink-900: #0f172a;
  --ink-700: #334155;
  --ink-600: #475569;
  --ink-500: #64748b;
  --ink-400: #94a3b8;

  --line: #e2e8f0;
  --line-soft: #eef2f7;
  --bg: #ffffff;
  --bg-soft: #f8fafc;

  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;

  --maxw: 1120px;
  --gutter: 24px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-700);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img,
svg {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--blue-600);
  text-decoration: none;
}

a:hover {
  color: var(--blue-700);
}

h1, h2, h3, h4 {
  color: var(--ink-900);
  line-height: 1.25;
  margin: 0;
  font-weight: 700;
}

p {
  margin: 0;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

/* ---------- 布局工具 ---------- */
.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.section {
  padding: 88px 0;
}

.section--soft {
  background: var(--bg-soft);
}

.section--tint {
  background: var(--blue-50);
}

.section-head {
  max-width: 640px;
  margin: 0 auto 52px;
  text-align: center;
}

.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue-600);
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(26px, 4vw, 36px);
  letter-spacing: -0.01em;
}

.section-sub {
  margin-top: 14px;
  font-size: 17px;
  color: var(--ink-500);
}

.section-head--left {
  text-align: left;
  margin-left: 0;
}

/* ---------- 顶栏 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-900);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.01em;
}

.nav-logo:hover {
  color: var(--ink-900);
}

.nav-logo .logo-mark {
  width: 34px;
  height: 34px;
  flex: none;
}

.nav-logo .logo-name {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.nav-logo .logo-name small {
  font-size: 11px;
  font-weight: 500;
  color: var(--ink-400);
  letter-spacing: 0.04em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-links a {
  display: block;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-600);
}

.nav-links a:hover {
  color: var(--blue-600);
  background: var(--blue-50);
}

.nav-links a.is-active {
  color: var(--blue-700);
  background: var(--blue-50);
  font-weight: 600;
}

.nav-links a.nav-cta {
  margin-left: 8px;
  background: var(--blue-600);
  color: #fff;
  padding: 9px 18px;
  font-weight: 600;
}

.nav-links a.nav-cta:hover {
  background: var(--blue-700);
  color: #fff;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fff;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink-900);
  border-radius: 2px;
  margin: 0 auto;
  position: relative;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle span::before {
  top: -6px;
}

.nav-toggle span::after {
  top: 4px;
}

.nav-toggle[aria-expanded="true"] span {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] span::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span::after {
  top: -2px;
  transform: rotate(-45deg);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease,
    border-color 0.18s ease, transform 0.18s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--blue-600);
  color: #fff;
}

.btn-primary:hover {
  background: var(--blue-700);
  color: #fff;
}

.btn-ghost {
  background: #fff;
  color: var(--ink-900);
  border-color: var(--line);
}

.btn-ghost:hover {
  border-color: var(--blue-500);
  color: var(--blue-600);
}

.btn-light {
  background: #fff;
  color: var(--blue-700);
}

.btn-light:hover {
  background: var(--blue-50);
  color: var(--blue-700);
}

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--blue-50) 0%, var(--bg) 100%);
  padding: 96px 0 88px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--blue-100);
  background: #fff;
  color: var(--blue-700);
  font-size: 13px;
  font-weight: 600;
  border-radius: 999px;
  margin-bottom: 22px;
}

.hero-title {
  font-size: clamp(34px, 5.4vw, 52px);
  letter-spacing: -0.02em;
}

.hero-title .accent {
  color: var(--blue-600);
}

.hero-sub {
  margin-top: 20px;
  font-size: 18px;
  color: var(--ink-500);
  max-width: 520px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  margin-top: 46px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.hero-stat .num {
  font-size: 30px;
  font-weight: 800;
  color: var(--ink-900);
  letter-spacing: -0.02em;
}

.hero-stat .label {
  font-size: 14px;
  color: var(--ink-500);
  margin-top: 2px;
}

/* Hero 右侧视觉卡片 */
.hero-visual {
  display: grid;
  gap: 16px;
}

.hero-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.hero-card .card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.hero-card .chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--blue-700);
  background: var(--blue-50);
  padding: 4px 10px;
  border-radius: 999px;
}

.hero-card h3 {
  font-size: 17px;
}

.hero-card p {
  font-size: 14px;
  color: var(--ink-500);
  margin-top: 6px;
}

.hero-card .tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.tag {
  font-size: 12px;
  color: var(--ink-600);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  padding: 4px 10px;
  border-radius: 6px;
  font-family: var(--font-mono);
}

/* ---------- 产品概览卡片 ---------- */
.grid {
  display: grid;
  gap: 24px;
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.card:hover {
  border-color: var(--blue-300, var(--blue-500));
  transform: translateY(-3px);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--blue-50);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--blue-600);
}

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

.card h3 {
  font-size: 19px;
}

.card .card-kicker {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--blue-600);
  margin-bottom: 8px;
}

.card p {
  margin-top: 10px;
  font-size: 15px;
  color: var(--ink-500);
}

.card .card-list {
  margin-top: 16px;
  display: grid;
  gap: 8px;
}

.card .card-list li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  color: var(--ink-600);
}

.card .card-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--blue-500);
}

.card .card-foot {
  margin-top: 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue-600);
}

/* ---------- 技术实力 / 标签墙 ---------- */
.tech-wall {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.tech-wall .tag {
  font-size: 14px;
  padding: 8px 16px;
  font-family: var(--font);
  background: #fff;
}

/* ---------- 服务能力 / 步骤 ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  counter-reset: step;
}

.step {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px 28px;
}

.step .step-num {
  font-size: 15px;
  font-weight: 800;
  color: var(--blue-600);
  font-family: var(--font-mono);
}

.step h3 {
  margin-top: 12px;
  font-size: 18px;
}

.step p {
  margin-top: 10px;
  font-size: 15px;
  color: var(--ink-500);
}

/* ---------- 大 CTA 区 ---------- */
.cta-panel {
  background: var(--blue-600);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  text-align: center;
  color: #fff;
}

.cta-panel h2 {
  color: #fff;
  font-size: clamp(24px, 3.6vw, 32px);
}

.cta-panel p {
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 17px;
}

.cta-panel .btn {
  margin-top: 28px;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: #0b1a33;
  color: #cbd5e1;
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand .nav-logo {
  color: #fff;
}

.footer-brand .nav-logo small {
  color: #94a3b8;
}

.footer-brand p {
  margin-top: 18px;
  font-size: 14px;
  color: #94a3b8;
  max-width: 300px;
}

.footer-col h4 {
  color: #fff;
  font-size: 14px;
  letter-spacing: 0.04em;
  margin-bottom: 18px;
}

.footer-col ul {
  display: grid;
  gap: 12px;
}

.footer-col a {
  color: #94a3b8;
  font-size: 14px;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: #64748b;
}

/* ---------- 页面头（内页） ---------- */
.page-head {
  background: linear-gradient(180deg, var(--blue-50) 0%, var(--bg) 100%);
  padding: 64px 0 48px;
  text-align: center;
}

.page-head h1 {
  font-size: clamp(30px, 4.6vw, 42px);
  letter-spacing: -0.02em;
}

.page-head p {
  max-width: 600px;
  margin: 16px auto 0;
  color: var(--ink-500);
  font-size: 17px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-400);
  margin-bottom: 18px;
}

.breadcrumb a {
  color: var(--ink-500);
}

.breadcrumb span + span::before {
  content: "/";
  margin-right: 8px;
  color: var(--ink-400);
}

/* ---------- 产品详情区块 ---------- */
.product-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 40px 0;
  border-bottom: 1px solid var(--line-soft);
}

.product-block:last-child {
  border-bottom: none;
}

.product-block .pro-side h2 {
  font-size: 26px;
}

.product-block .pro-side .pro-kind {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--blue-600);
}

.product-block .pro-side p {
  margin-top: 14px;
  color: var(--ink-500);
  font-size: 16px;
}

.product-block .pro-side .card-list {
  margin-top: 18px;
}

.product-meta {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.product-meta h3 {
  font-size: 16px;
  margin-bottom: 16px;
}

.product-meta .kv {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 10px 16px;
  font-size: 14px;
}

.product-meta .kv dt {
  color: var(--ink-400);
}

.product-meta .kv dd {
  color: var(--ink-700);
  margin: 0;
}

.product-meta .tech-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

/* ---------- 关于我们 ---------- */
.about-intro {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: start;
}

.about-intro .lede {
  font-size: 19px;
  line-height: 1.8;
  color: var(--ink-700);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ---------- 联系我们 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.qr-stack {
  display: grid;
  gap: 24px;
}

.qr-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
}

.qr-card .qr-img {
  display: block;
  width: 100%;
  max-width: 172px;
  height: auto;
  margin: 0 0 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: #fff;
}

.qr-card h3 {
  font-size: 18px;
}

.qr-card p {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-500);
}

.contact-info {
  display: grid;
  gap: 18px;
}

.contact-info .info-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.contact-info .info-item .ci-icon {
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--blue-50);
  color: var(--blue-600);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-info .info-item h3 {
  font-size: 15px;
}

.contact-info .info-item p {
  font-size: 14px;
  color: var(--ink-500);
  margin-top: 4px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .hero-grid,
  .product-block,
  .about-intro,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .grid-3,
  .steps,
  .value-grid {
    grid-template-columns: 1fr;
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .section {
    padding: 64px 0;
  }

  .hero {
    padding: 64px 0;
  }
}

@media (max-width: 640px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 12px 16px 20px;
    display: none;
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 14px;
  }

  .nav-links a.nav-cta {
    margin-left: 0;
    text-align: center;
  }

  .hero-stats {
    gap: 28px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .cta-panel {
    padding: 40px 24px;
  }
}

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}