/* ==========================================================================
   深圳市诺维塔电子商务有限公司 — 官方站点全站样式
   Novicta Official Website — Global Stylesheet
   --------------------------------------------------------------------------
   纯手写 CSS，无外部依赖；系统字体栈；科技蓝·专业稳重配色。
   断点：桌面 (>1024) / 平板 (768-1024) / 手机 (<768)
   ========================================================================== */

/* ---------------------------------------------------------------------------
   1. 设计令牌（Design Tokens）
   --------------------------------------------------------------------------- */
:root {
  /* 主色系 */
  --color-primary: #1a4d8f;
  --color-primary-dark: #0f3d75;
  --color-primary-light: #2563eb;
  --color-accent: #22b8cf;
  --color-accent-light: #67e8f9;

  /* 中性色 */
  --color-bg: #f5f7fa;
  --color-surface: #ffffff;
  --color-surface-alt: #eef2f8;
  --color-border: #e2e8f0;
  --color-text: #1f2a3c;
  --color-text-soft: #4a5568;
  --color-text-muted: #718096;

  /* 渐变 */
  --gradient-brand: linear-gradient(135deg, #1a4d8f 0%, #2563eb 55%, #22b8cf 100%);
  --gradient-soft: linear-gradient(135deg, #eef4fc 0%, #f5f7fa 100%);

  /* 阴影 */
  --shadow-sm: 0 1px 3px rgba(15, 61, 117, 0.08);
  --shadow-md: 0 6px 20px rgba(15, 61, 117, 0.1);
  --shadow-lg: 0 14px 40px rgba(15, 61, 117, 0.14);

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  /* 间距与节奏 */
  --container: 1180px;
  --gap: 24px;
  --section-y: 88px;

  /* 动效 */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --transition: 0.28s var(--ease);

  /* 字体栈 */
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "微软雅黑", "Helvetica Neue", Arial, sans-serif;
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* 移动端菜单展开时锁定滚动 */
body.nav-open {
  overflow: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 0.5em;
  line-height: 1.3;
  color: var(--color-primary-dark);
  font-weight: 700;
  letter-spacing: 0.01em;
}

h1 {
  font-size: clamp(2rem, 4.2vw, 3.05rem);
  line-height: 1.22;
  font-weight: 800;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.25rem);
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.45rem);
}

p {
  margin: 0 0 1em;
}

a {
  color: var(--color-primary-light);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-primary);
}

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

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

/* 键盘可访问性：统一焦点样式 */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* 屏幕阅读器专用文本 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* 跳转到主内容（可访问性） */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 2000;
  padding: 12px 20px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-sm);
  transition: top var(--transition);
}

.skip-link:focus {
  top: 16px;
  color: #fff;
}

/* ---------------------------------------------------------------------------
   3. 布局工具类
   --------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-y) 0;
}

.section--alt {
  background-color: var(--color-surface-alt);
}

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

.section__head {
  max-width: 720px;
  margin: 0 auto 56px;
  text-align: center;
}

.section__eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  padding: 5px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: rgba(26, 77, 143, 0.08);
  border-radius: var(--radius-pill);
}

.section__title {
  margin-bottom: 16px;
}

.section__desc {
  color: var(--color-text-soft);
  font-size: 1.02rem;
  margin-bottom: 0;
}

.grid {
  display: grid;
  gap: var(--gap);
}

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

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

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

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

/* ---------------------------------------------------------------------------
   4. 按钮
   --------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  font-size: 0.98rem;
  font-weight: 600;
  font-family: inherit;
  line-height: 1;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition),
    background-color var(--transition), color var(--transition);
  white-space: nowrap;
}

.btn svg {
  width: 18px;
  height: 18px;
}

.btn--primary {
  color: #fff;
  background: var(--gradient-brand);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.28);
}

.btn--primary:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.36);
}

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

.btn--ghost:hover {
  color: var(--color-primary-dark);
  border-color: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--outline-light {
  color: #fff;
  background: transparent;
  border-color: rgba(255, 255, 255, 0.6);
}

.btn--outline-light:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
}

.btn--lg {
  padding: 16px 34px;
  font-size: 1.05rem;
}

/* ---------------------------------------------------------------------------
   5. 页头 / 导航
   --------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition), background-color var(--transition);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}

/* 品牌标识 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-primary-dark);
  font-weight: 800;
  font-size: 1.18rem;
  letter-spacing: 0.02em;
}

.brand:hover {
  color: var(--color-primary);
}

.brand__mark {
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__name {
  font-size: 1.14rem;
}

.brand__sub {
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

/* 主导航 */
.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav__link {
  position: relative;
  padding: 10px 14px;
  color: var(--color-text-soft);
  font-size: 0.96rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 4px;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition);
}

.nav__link:hover {
  color: var(--color-primary);
}

.nav__link:hover::after {
  transform: scaleX(1);
}

.nav__link.is-active {
  color: var(--color-primary);
  font-weight: 600;
}

.nav__link.is-active::after {
  transform: scaleX(1);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.header__phone {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--color-primary-dark);
  font-weight: 600;
  font-size: 0.95rem;
}

.header__phone svg {
  width: 17px;
  height: 17px;
}

.header__phone:hover {
  color: var(--color-primary-light);
}

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  margin: 0 auto;
  background: var(--color-primary-dark);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------------------------------------------------------------------------
   6. Hero
   --------------------------------------------------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background: var(--gradient-brand);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.14) 1.2px, transparent 1.2px);
  background-size: 26px 26px;
  opacity: 0.5;
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 56px;
  padding: 96px 0 100px;
}

.hero__eyebrow {
  display: inline-block;
  margin-bottom: 20px;
  padding: 6px 16px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: #e6f2ff;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius-pill);
}

.hero h1 {
  color: #fff;
  margin-bottom: 22px;
}

.hero__lead {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.88);
  max-width: 560px;
  margin-bottom: 32px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 34px;
}

.hero__points {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
}

.hero__points li {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 0.94rem;
  color: rgba(255, 255, 255, 0.9);
}

.hero__points svg {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  color: var(--color-accent-light);
}

/* Hero 视觉卡片 */
.hero__visual {
  position: relative;
}

.hero__panel {
  position: relative;
  z-index: 2;
  padding: 26px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--shadow-lg);
}

.hero__panel-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #eaf4ff;
}

.hero__panel-title svg {
  width: 18px;
  height: 18px;
  color: var(--color-accent-light);
}

.hero__stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.hero__stat {
  padding: 16px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-md);
}

.hero__stat strong {
  display: block;
  font-size: 1.6rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}

.hero__stat span {
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.78);
}

.hero__badge {
  position: absolute;
  right: -14px;
  bottom: -20px;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.hero__badge svg {
  width: 26px;
  height: 26px;
  color: var(--color-primary-light);
}

.hero__badge b {
  display: block;
  font-size: 0.95rem;
  color: var(--color-primary-dark);
}

.hero__badge small {
  font-size: 0.76rem;
  color: var(--color-text-muted);
}

/* ---------------------------------------------------------------------------
   7. 页头 Banner（内页）
   --------------------------------------------------------------------------- */
.page-hero {
  position: relative;
  overflow: hidden;
  padding: 66px 0 62px;
  color: #fff;
  background: var(--gradient-brand);
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.12) 1.2px, transparent 1.2px);
  background-size: 24px 24px;
  opacity: 0.5;
  pointer-events: none;
}

.page-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.page-hero h1 {
  color: #fff;
  margin-bottom: 14px;
}

.page-hero p {
  color: rgba(255, 255, 255, 0.88);
  font-size: 1.05rem;
  margin: 0;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  font-size: 0.86rem;
  color: rgba(255, 255, 255, 0.78);
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.9);
}

.breadcrumb a:hover {
  color: #fff;
}

.breadcrumb span[aria-current] {
  color: var(--color-accent-light);
}

.breadcrumb__sep {
  opacity: 0.6;
}

/* ---------------------------------------------------------------------------
   8. 卡片
   --------------------------------------------------------------------------- */
.card {
  padding: 28px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(37, 99, 235, 0.35);
}

.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  margin-bottom: 18px;
  color: var(--color-primary);
  background: rgba(26, 77, 143, 0.08);
  border-radius: var(--radius-md);
}

.card__icon svg {
  width: 26px;
  height: 26px;
}

.card__title {
  margin-bottom: 10px;
  font-size: 1.18rem;
}

.card__text {
  color: var(--color-text-soft);
  font-size: 0.96rem;
  margin: 0;
}

/* 服务大卡：含要点列表 */
.card--service .card__list {
  margin-top: 16px;
  display: grid;
  gap: 8px;
}

.card--service .card__list li {
  position: relative;
  padding-left: 22px;
  font-size: 0.92rem;
  color: var(--color-text-soft);
}

.card--service .card__list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.6em;
  width: 6px;
  height: 6px;
  background: var(--color-primary-light);
  border-radius: 50%;
}

/* 数字数据卡 */
.stat-card {
  padding: 30px 26px;
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.stat-card__num {
  display: block;
  font-size: clamp(1.9rem, 3.4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.1;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-card__label {
  margin-top: 8px;
  font-size: 0.92rem;
  color: var(--color-text-soft);
}

/* ---------------------------------------------------------------------------
   9. 特性 / 流程 / 时间线
   --------------------------------------------------------------------------- */
.feature-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gap);
}

.feature {
  display: flex;
  gap: 18px;
  padding: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}

.feature:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.feature__icon {
  flex: 0 0 46px;
  width: 46px;
  height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: var(--gradient-brand);
  border-radius: var(--radius-sm);
}

.feature__icon svg {
  width: 24px;
  height: 24px;
}

.feature h3 {
  margin: 0 0 6px;
  font-size: 1.08rem;
}

.feature p {
  margin: 0;
  font-size: 0.93rem;
  color: var(--color-text-soft);
}

/* 交付流程 */
.process {
  counter-reset: step;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap);
  position: relative;
}

.process__step {
  position: relative;
  padding: 26px 22px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.process__step::before {
  counter-increment: step;
  content: "0" counter(step);
  display: block;
  margin-bottom: 12px;
  font-size: 1.5rem;
  font-weight: 800;
  color: rgba(26, 77, 143, 0.22);
  letter-spacing: 0.04em;
}

.process__step h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.process__step p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--color-text-soft);
}

/* 时间线（发展理念 / 里程碑） */
.timeline {
  position: relative;
  max-width: 820px;
  margin: 0 auto;
  padding-left: 30px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
  border-radius: 2px;
  opacity: 0.4;
}

.timeline__item {
  position: relative;
  padding: 0 0 30px 12px;
}

.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 7px;
  width: 14px;
  height: 14px;
  background: #fff;
  border: 3px solid var(--color-primary-light);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.timeline__item h3 {
  font-size: 1.08rem;
  margin-bottom: 6px;
}

.timeline__item p {
  margin: 0;
  font-size: 0.94rem;
  color: var(--color-text-soft);
}

/* ---------------------------------------------------------------------------
   10. 表格（服务能力矩阵）
   --------------------------------------------------------------------------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  background: var(--color-surface);
}

.matrix {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 0.94rem;
}

.matrix caption {
  padding: 16px 20px;
  text-align: left;
  font-weight: 600;
  color: var(--color-text-muted);
  font-size: 0.88rem;
  border-bottom: 1px solid var(--color-border);
}

.matrix th,
.matrix td {
  padding: 15px 20px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.matrix thead th {
  background: var(--color-surface-alt);
  color: var(--color-primary-dark);
  font-weight: 600;
  white-space: nowrap;
}

.matrix tbody tr:last-child td {
  border-bottom: none;
}

.matrix tbody tr:hover {
  background: rgba(37, 99, 235, 0.03);
}

/* 标签 */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag {
  padding: 6px 14px;
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--color-primary);
  background: rgba(26, 77, 143, 0.08);
  border-radius: var(--radius-pill);
}

/* ---------------------------------------------------------------------------
   11. CTA 区块
   --------------------------------------------------------------------------- */
.cta {
  position: relative;
  overflow: hidden;
  color: #fff;
  background: var(--gradient-brand);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.12) 1.2px, transparent 1.2px);
  background-size: 22px 22px;
  opacity: 0.5;
  pointer-events: none;
}

.cta > * {
  position: relative;
  z-index: 1;
}

.cta h2 {
  color: #fff;
  margin-bottom: 12px;
}

.cta p {
  max-width: 620px;
  margin: 0 auto 28px;
  color: rgba(255, 255, 255, 0.88);
}

.cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

/* ---------------------------------------------------------------------------
   12. 联系我们
   --------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  align-items: start;
}

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

.info-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.info-item__icon {
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  background: rgba(26, 77, 143, 0.08);
  border-radius: var(--radius-sm);
}

.info-item__icon svg {
  width: 22px;
  height: 22px;
}

.info-item dt {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 2px;
}

.info-item dd {
  margin: 0;
  font-size: 1rem;
  color: var(--color-text);
  font-weight: 500;
  word-break: break-word;
}

.info-item dd a {
  color: var(--color-primary-dark);
  font-weight: 600;
}

/* 表单 */
.form {
  padding: 32px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.form__row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.field {
  margin-bottom: 18px;
}

.field label {
  display: block;
  margin-bottom: 7px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
}

.field__req {
  color: #e03131;
  margin-left: 3px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 0.96rem;
  color: var(--color-text);
  background: #fbfcfe;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), box-shadow var(--transition),
    background-color var(--transition);
}

.field textarea {
  resize: vertical;
  min-height: 130px;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  background: #fff;
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.14);
}

.field.is-invalid input,
.field.is-invalid select,
.field.is-invalid textarea {
  border-color: #e03131;
  background: #fff5f5;
}

.field__error {
  display: none;
  margin-top: 6px;
  font-size: 0.82rem;
  color: #e03131;
}

.field.is-invalid .field__error {
  display: block;
}

.form__footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 6px;
}

.form__hint {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin: 0;
}

.form__status {
  display: none;
  margin-top: 18px;
  padding: 14px 16px;
  font-size: 0.92rem;
  border-radius: var(--radius-sm);
  background: rgba(34, 184, 207, 0.1);
  border: 1px solid rgba(34, 184, 207, 0.3);
  color: #0b7285;
}

.form__status.is-visible {
  display: block;
}

/* ---------------------------------------------------------------------------
   13. 页脚
   --------------------------------------------------------------------------- */
.site-footer {
  color: rgba(255, 255, 255, 0.78);
  background: #0d2a4d;
}

.footer__top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
  gap: 40px;
  padding: 60px 0 44px;
}

.footer__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
}

.footer__brand:hover {
  color: #fff;
}

.footer__brand svg {
  width: 34px;
  height: 34px;
}

.footer__about {
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.72);
  margin: 0 0 16px;
  max-width: 340px;
}

.footer__contact-mini {
  display: grid;
  gap: 8px;
  font-size: 0.92rem;
}

.footer__contact-mini a,
.footer__contact-mini span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.82);
}

.footer__contact-mini a:hover {
  color: #fff;
}

.footer__contact-mini svg {
  width: 16px;
  height: 16px;
  color: var(--color-accent-light);
}

.footer__col h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 18px;
}

.footer__links {
  display: grid;
  gap: 11px;
}

.footer__links a {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.93rem;
}

.footer__links a:hover {
  color: #fff;
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 22px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.86rem;
  color: rgba(255, 255, 255, 0.66);
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
}

.footer__legal a {
  color: rgba(255, 255, 255, 0.8);
}

.footer__legal a:hover {
  color: #fff;
  text-decoration: underline;
}

.footer__copyright {
  color: rgba(255, 255, 255, 0.72);
}

/* ---------------------------------------------------------------------------
   14. 滚动进场动效
   --------------------------------------------------------------------------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  will-change: opacity, transform;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  * {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------------------------------------------------------------------------
   15. 响应式：平板（<=1024px）
   --------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  :root {
    --section-y: 68px;
  }

  .hero__inner {
    grid-template-columns: 1fr;
    gap: 44px;
    padding: 72px 0 80px;
  }

  .hero__visual {
    max-width: 520px;
  }

  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer__top {
    grid-template-columns: repeat(2, 1fr);
    gap: 36px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

/* ---------------------------------------------------------------------------
   16. 响应式：手机（<=768px）
   --------------------------------------------------------------------------- */
@media (max-width: 768px) {
  :root {
    --section-y: 56px;
    --gap: 18px;
  }

  body {
    font-size: 15.5px;
  }

  .container {
    padding: 0 18px;
  }

  /* 移动端导航：默认隐藏，展开为抽屉 */
  .nav-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 20px 18px 40px;
    background: #fff;
    border-top: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    transition: transform var(--transition);
    overflow-y: auto;
  }

  .nav.is-open {
    transform: translateX(0);
  }

  .nav__link {
    padding: 15px 12px;
    font-size: 1.02rem;
    border-bottom: 1px solid var(--color-border);
    border-radius: 0;
  }

  .nav__link::after {
    display: none;
  }

  .nav__link.is-active {
    color: var(--color-primary);
    background: rgba(26, 77, 143, 0.05);
  }

  /* 移动端在抽屉内追加联系按钮 */
  .nav__cta {
    display: flex;
    margin-top: 16px;
  }

  .header__phone {
    display: none;
  }

  .header__actions .btn {
    display: none;
  }

  .grid--2,
  .grid--3,
  .grid--4,
  .feature-row {
    grid-template-columns: 1fr;
  }

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

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

  .cta {
    padding: 40px 24px;
  }

  .footer__top {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 48px 0 36px;
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero__badge {
    right: 0;
  }

  .section__head {
    margin-bottom: 40px;
  }
}

@media (max-width: 420px) {
  .hero__stat-grid {
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
  }

  .cta__actions .btn {
    width: 100%;
  }
}

/* 桌面端隐藏仅移动端使用的 CTA 项 */
@media (min-width: 769px) {
  .nav__cta {
    display: none;
  }
}