/* ==========================================================================
   gxwy.com.cn 官网 · 主样式表
   设计语言：简约现代商务（深蓝主色 + 雅致金点缀 + 大留白 + 轻阴影）
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 设计令牌
   -------------------------------------------------------------------------- */
:root {
  /* 品牌色 */
  --brand: #0f3b57;
  --brand-600: #14506f;
  --brand-500: #1c6a8f;
  --brand-400: #2a7fa5;
  --brand-100: #e8eef3;
  --brand-050: #f3f7fa;

  /* 点缀色 */
  --accent: #c9a24b;
  --accent-dark: #a9862f;
  --accent-050: #faf4e6;

  /* 中性色 */
  --ink: #16202b;
  --ink-2: #3b4756;
  --muted: #6b7785;
  --muted-2: #93a0ad;
  --line: #e4e9ee;
  --line-2: #eef2f6;
  --bg: #ffffff;
  --bg-soft: #f6f8fa;
  --bg-deep: #0c2c40;

  /* 圆角 */
  --r-sm: 8px;
  --r: 14px;
  --r-lg: 20px;
  --r-pill: 999px;

  /* 阴影 */
  --sh-sm: 0 1px 2px rgba(16, 32, 48, 0.05);
  --sh: 0 8px 26px rgba(16, 32, 48, 0.07);
  --sh-lg: 0 20px 50px rgba(12, 44, 64, 0.12);

  /* 布局 */
  --container: 1200px;
  --gutter: 24px;
  --header-h: 74px;
  --topbar-h: 40px;

  /* 动效 */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 0.45s;

  /* 字体 */
  --font: "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB",
          "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC",
          system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-num: "DIN Alternate", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 20px);
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.is-locked { overflow: hidden; }

h1, h2, h3, h4, h5 {
  margin: 0;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--ink);
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s var(--ease);
}

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

button { font-family: inherit; cursor: pointer; }

::selection { background: var(--brand); color: #fff; }

/* --------------------------------------------------------------------------
   3. 布局工具
   -------------------------------------------------------------------------- */

/* 图标（统一调用 header 中的 SVG 精灵） */
.icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  display: inline-block;
  vertical-align: middle;
}
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section { padding: 96px 0; }
.section--soft { background: var(--bg-soft); }
.section--tight { padding: 72px 0; }

.grid { display: grid; gap: 28px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* 章节标题 */
.section-head {
  max-width: 720px;
  margin: 0 auto 56px;
  text-align: center;
}
.section-head--left { margin-left: 0; text-align: left; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-dark);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--accent);
}

.section-title {
  font-size: clamp(26px, 3vw, 38px);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 16.5px;
  color: var(--muted);
  line-height: 1.85;
}

/* --------------------------------------------------------------------------
   4. 按钮
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: all 0.28s var(--ease);
  white-space: nowrap;
}
.btn--sm { padding: 9px 18px; font-size: 14px; }
.btn--lg { padding: 16px 36px; font-size: 16px; }

.btn--primary {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 6px 18px rgba(15, 59, 87, 0.18);
}
.btn--primary:hover {
  background: var(--brand-600);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(15, 59, 87, 0.24);
}

.btn--gold {
  background: var(--accent);
  color: #3a2c07;
}
.btn--gold:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
}

.btn--outline {
  border-color: var(--line);
  color: var(--ink);
  background: #fff;
}
.btn--outline:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.btn--ghost {
  border-color: rgba(255, 255, 255, 0.35);
  background: transparent;
  color: #fff;
}
.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

.btn--link {
  padding: 0;
  color: var(--brand-600);
  font-weight: 600;
  border: none;
  background: none;
}
.btn--link .arrow { transition: transform 0.28s var(--ease); }
.btn--link:hover .arrow { transform: translateX(5px); }

/* --------------------------------------------------------------------------
   5. 顶部信息条
   -------------------------------------------------------------------------- */
.topbar {
  height: var(--topbar-h);
  background: var(--bg-deep);
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
}
.topbar__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.topbar__meta { display: inline-flex; align-items: center; gap: 14px; }
.topbar__meta strong { color: var(--accent); font-weight: 600; }
.topbar__divider {
  width: 1px;
  height: 12px;
  background: rgba(255, 255, 255, 0.22);
}

/* --------------------------------------------------------------------------
   6. 主导航
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}
.site-header.is-stuck {
  box-shadow: 0 4px 20px rgba(16, 32, 48, 0.07);
  border-bottom-color: var(--line);
}

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

/* Logo */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand__text { display: flex; flex-direction: column; line-height: 1.2; }
.brand__text strong {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--brand);
}
.brand__text em {
  font-style: normal;
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--muted-2);
}

/* 导航列表 */
.nav { margin-left: auto; }
.nav__list {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav__item > a {
  position: relative;
  display: block;
  padding: 10px 16px;
  font-size: 15.5px;
  font-weight: 500;
  color: var(--ink-2);
  border-radius: var(--r-sm);
}
.nav__item > a::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav__item > a:hover { color: var(--brand); }
.nav__item > a:hover::after,
.nav__item.is-active > a::after { transform: scaleX(1); }
.nav__item.is-active > a { color: var(--brand); font-weight: 600; }

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: #fff;
  padding: 0;
  position: relative;
}
.nav-toggle span {
  position: absolute;
  left: 11px;
  width: 18px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: all 0.3s var(--ease);
}
.nav-toggle span:nth-child(1) { top: 14px; }
.nav-toggle span:nth-child(2) { top: 20px; }
.nav-toggle span:nth-child(3) { top: 26px; }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* --------------------------------------------------------------------------
   7. Hero 首屏
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--bg-deep);
}

.hero__slides {
  position: absolute;
  inset: 0;
}
.hero__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.1s var(--ease);
}
.hero__slide.is-active { opacity: 1; }
.hero__slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.06);
  transition: transform 7s linear;
}
.hero__slide.is-active img { transform: scale(1); }
.hero__slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    100deg,
    rgba(9, 30, 44, 0.9) 0%,
    rgba(9, 30, 44, 0.72) 42%,
    rgba(9, 30, 44, 0.35) 100%
  );
}

.hero__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 90px 0 110px;
}
.hero__content { max-width: 660px; }

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 16px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.9);
  font-size: 13px;
  letter-spacing: 0.05em;
  margin-bottom: 26px;
}
.hero__badge i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(201, 162, 75, 0.22);
}

.hero__title {
  color: #fff;
  font-size: clamp(32px, 4.4vw, 54px);
  line-height: 1.24;
  margin-bottom: 22px;
  font-weight: 700;
}
.hero__title em {
  font-style: normal;
  color: var(--accent);
  position: relative;
}

.hero__desc {
  font-size: 17.5px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 36px;
  max-width: 560px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 54px;
}

/* Hero 数据条 */
.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  max-width: 640px;
}
.hero-stat__value {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
}
.hero-stat__label {
  display: block;
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.66);
  margin-top: 4px;
}

/* Hero 指示点 */
.hero__dots {
  position: absolute;
  z-index: 3;
  bottom: 40px;
  left: 0;
  right: 0;
  display: flex;
  gap: 10px;
  padding: 0 var(--gutter);
  max-width: var(--container);
  margin: 0 auto;
}
.hero__dot {
  width: 28px;
  height: 3px;
  border: none;
  padding: 0;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.3);
  transition: background 0.3s var(--ease), width 0.3s var(--ease);
}
.hero__dot.is-active { background: var(--accent); width: 46px; }

/* --------------------------------------------------------------------------
   8. 卡片通用
   -------------------------------------------------------------------------- */
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 34px 30px;
  transition: all 0.35s var(--ease);
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--sh-lg);
  border-color: transparent;
}

.card__icon {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--brand-050);
  color: var(--brand-600);
  margin-bottom: 20px;
}
.card__title {
  font-size: 19px;
  margin-bottom: 10px;
}
.card__text {
  font-size: 14.8px;
  color: var(--muted);
  line-height: 1.8;
}

/* --------------------------------------------------------------------------
   9. 服务概览（首页）
   -------------------------------------------------------------------------- */
.service-card {
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.4s var(--ease);
}
.service-card:hover::before { transform: scaleY(1); }

.service-list {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}
.service-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  color: var(--muted);
  line-height: 2;
}
.service-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

/* --------------------------------------------------------------------------
   10. 关于 / 优势分栏
   -------------------------------------------------------------------------- */
.split {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 68px;
  align-items: center;
}
.split__media {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--sh-lg);
}
.split__media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.split__badge {
  position: absolute;
  left: 22px;
  bottom: 22px;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-radius: var(--r);
  padding: 18px 24px;
  box-shadow: var(--sh);
}
.split__badge strong {
  display: block;
  font-family: var(--font-num);
  font-size: 32px;
  color: var(--brand);
  line-height: 1.1;
}
.split__badge span {
  font-size: 13px;
  color: var(--muted);
}

.feature-list {
  display: grid;
  gap: 22px;
  margin-top: 34px;
}
.feature-item {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
  align-items: start;
}
.feature-item__icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--brand-050);
  color: var(--brand-600);
}
.feature-item h4 {
  font-size: 17px;
  margin-bottom: 4px;
}
.feature-item p {
  font-size: 14.6px;
  color: var(--muted);
  line-height: 1.75;
}

/* --------------------------------------------------------------------------
   11. 数据统计带
   -------------------------------------------------------------------------- */
.stats-band {
  background: var(--brand-050);
  padding: 62px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.stat-box {
  text-align: center;
  padding: 0 12px;
  position: relative;
}
.stat-box + .stat-box::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: var(--line);
}
.stat-box__value {
  font-family: var(--font-num);
  font-size: clamp(30px, 3.4vw, 44px);
  font-weight: 700;
  color: var(--brand);
  line-height: 1.15;
}
.stat-box__label {
  font-size: 14.5px;
  color: var(--muted);
  margin-top: 6px;
}

/* --------------------------------------------------------------------------
   12. 项目卡片
   -------------------------------------------------------------------------- */
.project-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  transition: all 0.35s var(--ease);
  display: flex;
  flex-direction: column;
}
.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--sh-lg);
  border-color: transparent;
}
.project-card__media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
}
.project-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.project-card:hover .project-card__media img { transform: scale(1.07); }

.project-card__tag {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 5px 13px;
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, 0.94);
  color: var(--brand);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.03em;
}
.project-card__body {
  padding: 24px 26px 26px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.project-card__title {
  font-size: 19px;
  margin-bottom: 8px;
}
.project-card__meta {
  font-size: 13.5px;
  color: var(--muted-2);
  margin-bottom: 12px;
}
.project-card__desc {
  font-size: 14.5px;
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 18px;
}
.project-card__specs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--line-2);
}
.spec-item {
  display: flex;
  align-items: baseline;
  gap: 5px;
  font-size: 13px;
}
.spec-item b {
  font-family: var(--font-num);
  font-size: 16px;
  color: var(--brand);
  font-weight: 700;
}
.spec-item span { color: var(--muted); }

/* 筛选标签页 */
.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 44px;
}
.filter-tab {
  padding: 9px 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: #fff;
  color: var(--ink-2);
  font-size: 14.5px;
  font-weight: 500;
  transition: all 0.28s var(--ease);
}
.filter-tab:hover { border-color: var(--brand-400); color: var(--brand-600); }
.filter-tab.is-active {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}

/* --------------------------------------------------------------------------
   13. 新闻卡片
   -------------------------------------------------------------------------- */
.news-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  transition: all 0.35s var(--ease);
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--sh-lg);
  border-color: transparent;
}
.news-card__media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}
.news-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.news-card:hover .news-card__media img { transform: scale(1.06); }
.news-card__body { padding: 24px 26px 26px; flex: 1; display: flex; flex-direction: column; }
.news-card__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--muted-2);
  margin-bottom: 12px;
}
.news-card__cat {
  padding: 3px 10px;
  border-radius: 4px;
  background: var(--brand-050);
  color: var(--brand-600);
  font-weight: 600;
}
.news-card__title {
  font-size: 17.5px;
  line-height: 1.55;
  margin-bottom: 10px;
  transition: color 0.25s var(--ease);
}
.news-card:hover .news-card__title { color: var(--brand-600); }
.news-card__excerpt {
  font-size: 14.5px;
  color: var(--muted);
  line-height: 1.78;
  margin-bottom: 18px;
}
.news-card__more {
  margin-top: auto;
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-600);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.news-card__more svg { transition: transform 0.28s var(--ease); }
.news-card:hover .news-card__more svg { transform: translateX(4px); }

/* 新闻列表（列表页） */
.news-list-item {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 30px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line-2);
  align-items: center;
}
.news-list-item__media {
  border-radius: var(--r);
  overflow: hidden;
  aspect-ratio: 4 / 3;
}
.news-list-item__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.news-list-item:hover .news-list-item__media img { transform: scale(1.06); }
.news-list-item__title {
  font-size: 20px;
  margin-bottom: 10px;
  transition: color 0.25s var(--ease);
}
.news-list-item:hover .news-list-item__title { color: var(--brand-600); }

/* --------------------------------------------------------------------------
   14. 服务流程
   -------------------------------------------------------------------------- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.process-step {
  position: relative;
  padding-top: 26px;
  border-top: 2px solid var(--line);
}
.process-step::before {
  counter-increment: step;
  content: "0" counter(step);
  position: absolute;
  top: -13px;
  left: 0;
  padding-right: 12px;
  background: var(--bg);
  font-family: var(--font-num);
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.06em;
}
.section--soft .process-step::before { background: var(--bg-soft); }
.process-step h4 { font-size: 18px; margin-bottom: 8px; }
.process-step p { font-size: 14.6px; color: var(--muted); line-height: 1.8; }

/* --------------------------------------------------------------------------
   15. 资质 / 荣誉
   -------------------------------------------------------------------------- */
.honor-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.honor-item {
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 28px 22px;
  text-align: center;
  background: #fff;
  transition: all 0.3s var(--ease);
}
.honor-item:hover { border-color: var(--accent); transform: translateY(-4px); }
.honor-item__no {
  font-family: var(--font-num);
  font-size: 13px;
  color: var(--accent-dark);
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}
.honor-item__name { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
.honor-item__org { font-size: 13px; color: var(--muted-2); }

/* --------------------------------------------------------------------------
   16. 时间轴（发展历程）
   -------------------------------------------------------------------------- */
.timeline {
  position: relative;
  padding-left: 34px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--brand-100));
}
.timeline__item {
  position: relative;
  padding-bottom: 38px;
}
.timeline__item:last-child { padding-bottom: 0; }
.timeline__item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 7px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--accent);
}
.timeline__year {
  font-family: var(--font-num);
  font-size: 22px;
  font-weight: 700;
  color: var(--brand);
  line-height: 1.2;
}
.timeline__title { font-size: 17.5px; margin: 4px 0 6px; }
.timeline__text { font-size: 14.6px; color: var(--muted); line-height: 1.8; }

/* --------------------------------------------------------------------------
   17. 企业文化
   -------------------------------------------------------------------------- */
.culture-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.culture-card {
  border-radius: var(--r);
  padding: 40px 32px;
  background: linear-gradient(160deg, #ffffff 0%, var(--brand-050) 100%);
  border: 1px solid var(--line);
  text-align: center;
}
.culture-card__icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 20px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #fff;
  color: var(--brand-600);
  box-shadow: var(--sh-sm);
}
.culture-card h4 { font-size: 19px; margin-bottom: 10px; }
.culture-card p { font-size: 14.6px; color: var(--muted); line-height: 1.8; }

/* --------------------------------------------------------------------------
   18. 子页横幅 + 面包屑
   -------------------------------------------------------------------------- */
.subhero {
  position: relative;
  padding: 92px 0 78px;
  background: linear-gradient(120deg, var(--bg-deep) 0%, var(--brand-600) 62%, var(--brand) 100%);
  overflow: hidden;
}
.subhero::after {
  content: "";
  position: absolute;
  right: -120px;
  top: -80px;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 162, 75, 0.2), transparent 68%);
}
.subhero__inner { position: relative; z-index: 2; }
.subhero__title {
  color: #fff;
  font-size: clamp(28px, 3.4vw, 42px);
  margin-bottom: 14px;
}
.subhero__desc {
  color: rgba(255, 255, 255, 0.75);
  font-size: 16.5px;
  max-width: 640px;
  line-height: 1.85;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 18px;
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { color: rgba(255, 255, 255, 0.35); }

/* --------------------------------------------------------------------------
   18.05 服务模块细分（svc-block 内的二级拆解）
   -------------------------------------------------------------------------- */
.svc-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px dashed var(--line-2);
}
.svc-detail__title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--brand);
  margin-bottom: 11px;
  display: flex;
  align-items: center;
  gap: 7px;
}
.svc-detail__title::before {
  content: "";
  width: 14px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.svc-detail__list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.svc-detail__list li {
  font-size: 13.8px;
  color: var(--muted);
  line-height: 1.8;
  padding-left: 15px;
  position: relative;
}
.svc-detail__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 9px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
}
.svc-detail__list li b {
  color: var(--ink);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   18.06 服务保障体系
   -------------------------------------------------------------------------- */
.assure-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}
.assure-item {
  background: #fff;
  border: 1px solid var(--line-2);
  border-radius: var(--r-lg);
  padding: 28px 30px;
}
.assure-item__no {
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--accent-dark);
  margin-bottom: 10px;
}
.assure-item h4 {
  font-size: 18px;
  margin-bottom: 10px;
}
.assure-item p {
  font-size: 14.4px;
  color: var(--muted);
  line-height: 1.85;
}
.assure-item ul {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
}
.assure-item ul li {
  font-size: 13.8px;
  color: var(--muted);
  line-height: 1.8;
  padding-left: 15px;
  position: relative;
}
.assure-item ul li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 9px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
}
@media (max-width: 900px) {
  .assure-grid { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .svc-detail { grid-template-columns: 1fr; gap: 18px; }
}

/* --------------------------------------------------------------------------
   18.1 404 错误页
   -------------------------------------------------------------------------- */
.notfound { text-align: center; max-width: 720px; margin: 0 auto; }
.notfound__code {
  font-family: var(--font-num);
  font-size: clamp(72px, 12vw, 132px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.06em;
  color: rgba(15, 59, 87, 0.1);
  margin-bottom: 8px;
}
.notfound__title { font-size: clamp(22px, 2.6vw, 30px); margin-bottom: 14px; }
.notfound__desc {
  font-size: 15.6px;
  color: var(--muted);
  line-height: 1.9;
  margin-bottom: 30px;
}
.notfound__desc strong { color: var(--accent-dark); }
.notfound__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 34px;
}
.notfound__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 26px;
  padding-top: 26px;
  border-top: 1px solid var(--line-2);
  font-size: 14.5px;
}
.notfound__links a { color: var(--muted); }
.notfound__links a:hover { color: var(--brand); }

/* --------------------------------------------------------------------------
   19. 服务详情页
   -------------------------------------------------------------------------- */
.svc-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 62px;
  align-items: center;
  padding: 62px 0;
  border-bottom: 1px solid var(--line-2);
}
.svc-block:last-child { border-bottom: none; }
.svc-block:nth-child(even) .svc-block__media { order: 2; }

.svc-block__media {
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--sh);
}
.svc-block__media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.svc-block__no {
  font-family: var(--font-num);
  font-size: 14px;
  letter-spacing: 0.14em;
  color: var(--accent-dark);
  font-weight: 700;
  margin-bottom: 12px;
}
.svc-block__title { font-size: clamp(23px, 2.6vw, 30px); margin-bottom: 14px; }
.svc-block__desc { font-size: 15.5px; color: var(--muted); line-height: 1.85; margin-bottom: 22px; }

.standard-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 24px;
}
.standard-item {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 14.6px;
  color: var(--ink-2);
  line-height: 1.7;
}
.standard-item svg { flex-shrink: 0; margin-top: 5px; color: var(--accent); }

/* --------------------------------------------------------------------------
   20. 表格
   -------------------------------------------------------------------------- */
.data-table-wrap {
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  background: #fff;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}
.data-table th,
.data-table td {
  padding: 16px 24px;
  text-align: left;
  border-bottom: 1px solid var(--line-2);
}
.data-table thead th {
  background: var(--brand-050);
  color: var(--brand);
  font-weight: 600;
  font-size: 14.5px;
}
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover { background: var(--bg-soft); }

/* --------------------------------------------------------------------------
   21. 联系页
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 56px;
  align-items: start;
}
.contact-info-card {
  display: flex;
  gap: 18px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line-2);
}
.contact-info-card:last-of-type { border-bottom: none; }
.contact-info-card__icon {
  width: 46px;
  height: 46px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--brand-050);
  color: var(--brand-600);
}
.contact-info-card__label {
  font-size: 13px;
  color: var(--muted-2);
  letter-spacing: 0.04em;
  margin-bottom: 3px;
}
.contact-info-card__value {
  font-size: 16.5px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.6;
}
.contact-info-card__value a:hover { color: var(--brand-600); }

/* 地图替代方案（不使用在线地图瓦片，规避地图合规风险） */
.location-note {
  margin-top: 20px;
  padding: 22px 24px;
  border: 1px dashed var(--accent);
  border-radius: var(--r);
  background: var(--accent-050);
}
.location-note h4 {
  font-size: 15.5px;
  color: var(--accent-dark);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.location-note p { font-size: 14.5px; color: var(--ink-2); line-height: 1.8; }

/* --------------------------------------------------------------------------
   22. 表单
   -------------------------------------------------------------------------- */
.form-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 40px;
  box-shadow: var(--sh);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.field { margin-bottom: 18px; }
.field__label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-2);
  margin-bottom: 8px;
}
.field__label .req { color: #d1413c; margin-left: 3px; }
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  font-family: inherit;
  font-size: 15px;
  color: var(--ink);
  background: #fff;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--brand-400);
  box-shadow: 0 0 0 3px rgba(42, 127, 165, 0.12);
}
.field textarea { min-height: 118px; resize: vertical; }

.field.is-error input,
.field.is-error select,
.field.is-error textarea { border-color: #d1413c; }
.field__error {
  display: none;
  font-size: 13px;
  color: #d1413c;
  margin-top: 6px;
}
.field.is-error .field__error { display: block; }

.form-agree {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 20px;
}
.form-agree input { margin-top: 3px; flex-shrink: 0; accent-color: var(--brand); }

.form-success {
  display: none;
  padding: 18px 20px;
  border-radius: var(--r-sm);
  background: #eaf6ef;
  border: 1px solid #b6e0c6;
  color: #1c6b3c;
  font-size: 14.5px;
  margin-bottom: 18px;
}
.form-success.is-visible { display: block; }

/* --------------------------------------------------------------------------
   23. CTA 条 + 页脚
   -------------------------------------------------------------------------- */
.cta-band {
  background: linear-gradient(115deg, var(--bg-deep) 0%, var(--brand) 65%, var(--brand-600) 100%);
  padding: 70px 0;
}
.cta-band__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.cta-band__text h2 {
  color: #fff;
  font-size: clamp(23px, 2.6vw, 32px);
  margin-bottom: 12px;
}
.cta-band__text p {
  color: rgba(255, 255, 255, 0.72);
  font-size: 15.5px;
  max-width: 560px;
}
.cta-band__actions { display: flex; gap: 14px; flex-wrap: wrap; }

.footer {
  background: #0a2231;
  color: rgba(255, 255, 255, 0.68);
  font-size: 14.5px;
}
.footer__inner {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 48px;
  padding: 68px 0 52px;
}
.brand--footer { margin-bottom: 20px; }
.brand--footer .brand__text strong { color: #fff; }
.brand--footer .brand__text em { color: rgba(255, 255, 255, 0.45); }
.footer__intro { line-height: 1.85; margin-bottom: 22px; max-width: 340px; }
.footer__contact li {
  display: flex;
  gap: 12px;
  margin-bottom: 10px;
  line-height: 1.7;
}
.footer__contact .label {
  flex-shrink: 0;
  width: 32px;
  color: rgba(255, 255, 255, 0.42);
}
.footer__title {
  color: #fff;
  font-size: 16px;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer__links li { margin-bottom: 11px; }
.footer__links a {
  color: rgba(255, 255, 255, 0.62);
  font-size: 14px;
  transition: color 0.25s var(--ease), padding-left 0.25s var(--ease);
}
.footer__links a:hover { color: var(--accent); padding-left: 5px; }

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 0;
  font-size: 13.5px;
}
.footer__bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.footer__links-inline { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.footer__links-inline a:hover { color: var(--accent); }
.badge-police { color: rgba(255, 255, 255, 0.45); }

/* 返回顶部 */
.back-to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 90;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border: none;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  box-shadow: 0 10px 26px rgba(15, 59, 87, 0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all 0.35s var(--ease);
}
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--accent); color: #3a2c07; }

/* --------------------------------------------------------------------------
   24. 滚动进场动画
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }
.reveal--d1 { transition-delay: 0.09s; }
.reveal--d2 { transition-delay: 0.18s; }
.reveal--d3 { transition-delay: 0.27s; }
.reveal--d4 { transition-delay: 0.36s; }

/* --------------------------------------------------------------------------
   25. 响应式
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  .container { max-width: 100%; }
  .nav { display: none; }
  .nav-toggle { display: block; }

  /* 移动端抽屉导航 */
  .nav.is-open {
    display: block;
    position: fixed;
    top: calc(var(--topbar-h) + var(--header-h));
    left: 0;
    right: 0;
    bottom: 0;
    background: #fff;
    padding: 20px var(--gutter) 40px;
    overflow-y: auto;
    z-index: 99;
    animation: drawerIn 0.3s var(--ease);
  }
  @keyframes drawerIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: none; }
  }
  .nav.is-open .nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav__item > a {
    padding: 15px 4px;
    font-size: 17px;
    border-bottom: 1px solid var(--line-2);
    border-radius: 0;
  }
  .nav__item > a::after { display: none; }
  .nav__item.is-active > a { color: var(--brand-600); }

  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .footer__inner { grid-template-columns: repeat(2, 1fr); gap: 40px; }
  .split { grid-template-columns: 1fr; gap: 44px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .svc-block { grid-template-columns: 1fr; gap: 34px; }
  .svc-block:nth-child(even) .svc-block__media { order: 0; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .stat-box:nth-child(3)::before { display: none; }
}

@media (max-width: 900px) {
  .section { padding: 72px 0; }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .culture-grid { grid-template-columns: 1fr; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); gap: 22px 12px; }
  .news-list-item { grid-template-columns: 180px 1fr; gap: 20px; }
  .topbar__slogan { display: none; }
  .topbar__inner { justify-content: center; }
}

@media (max-width: 680px) {
  :root { --gutter: 18px; --header-h: 66px; }
  body { font-size: 15.5px; }
  .section { padding: 58px 0; }
  .section-head { margin-bottom: 40px; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; gap: 30px; }
  .honor-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .topbar { display: none; }
  .hero { min-height: 540px; }
  .hero__inner { padding: 64px 0 96px; }
  .hero__actions { margin-bottom: 40px; }
  .hero__actions .btn { flex: 1 1 auto; }
  .news-list-item { grid-template-columns: 1fr; gap: 16px; }
  .news-list-item__media { aspect-ratio: 16 / 9; }
  .footer__inner { grid-template-columns: 1fr; gap: 34px; padding: 48px 0 36px; }
  .cta-band__actions { width: 100%; }
  .cta-band__actions .btn { flex: 1 1 auto; }
  .form-card { padding: 26px 22px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .standard-grid { grid-template-columns: 1fr; }
  .data-table-wrap { overflow-x: auto; }
  .data-table { min-width: 620px; }
  .back-to-top { right: 16px; bottom: 16px; }
  .footer__bottom-inner { flex-direction: column; align-items: flex-start; gap: 10px; }
}

/* --------------------------------------------------------------------------
   26. 无障碍
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ==========================================================================
   27. 版式与质感精修（高级感）
   --------------------------------------------------------------------------
   不改变原有设计体系，仅做精度提升：中文排印、多层阴影、
   图片质感、微交互、留白节奏与无障碍焦点。
   ========================================================================== */

/* 27.1 中文排印：负字距让标题更紧致，balanced/pretty 换行避免孤字尾行 */
h1, h2, h3, h4,
.section-title, .project-card__title, .card__title, .news-card__title {
  letter-spacing: -0.012em;
  text-wrap: balance;
}
.hero__title { letter-spacing: -0.022em; }
.section-title { letter-spacing: -0.018em; }
p, .section-desc, .card__text, .project-card__desc { text-wrap: pretty; }

/* 27.2 正文行宽：限制行长提升阅读质感（避免过宽显得松散） */
.section-desc {
  max-width: 680px;
  line-height: 1.86;
}

/* 27.3 更深邃的多层阴影（近实远虚，比单层更有空气感） */
:root {
  --sh-sm: 0 1px 2px rgba(16, 32, 48, 0.04), 0 2px 6px rgba(16, 32, 48, 0.04);
  --sh:    0 2px 4px rgba(16, 32, 48, 0.04), 0 8px 20px rgba(16, 32, 48, 0.05),
           0 16px 32px rgba(16, 32, 48, 0.04);
  --sh-lg: 0 2px 4px rgba(16, 32, 48, 0.04), 0 12px 24px rgba(16, 32, 48, 0.06),
           0 28px 56px rgba(16, 32, 48, 0.10);
}

/* 27.4 图片质感：微提饱和、占位底色、底部渐隐、抗锯齿 */
.project-card__media,
.news-card__media,
.news-list-item__media,
.svc-block__media,
.split__media {
  background: var(--brand-050);
}
.project-card__media img,
.news-card__media img,
.news-list-item__media img,
.svc-block__media img,
.split__media img {
  filter: saturate(1.04) contrast(1.015);
  backface-visibility: hidden;
}
/* 图片底部渐隐，让图与文字区衔接更柔和 */
.project-card__media::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 72px;
  background: linear-gradient(to top, rgba(15, 59, 87, 0.16), rgba(15, 59, 87, 0));
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.5s var(--ease);
}
.project-card:hover .project-card__media::after { opacity: 1; }

/* 27.5 微交互：hover 缩放更克制、时长更长（廉价感多来自过快的动效） */
.project-card__media img { transition: transform 0.9s var(--ease); }
.project-card:hover .project-card__media img { transform: scale(1.045); }
.news-card__media img,
.news-list-item__media img { transition: transform 0.9s var(--ease); }
.news-card:hover .news-card__media img,
.news-list-item:hover .news-list-item__media img { transform: scale(1.035); }

/* 27.6 卡片 hover：顶部品牌色细条由左展开 */
.project-card { position: relative; }
.project-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 3;
  background: linear-gradient(90deg, var(--brand) 0%, var(--accent) 100%);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.55s var(--ease);
}
.project-card:hover::before { transform: scaleX(1); }

/* 券标/浮标：毛玻璃 + 柔和投影 */
.project-card__tag {
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 2px 10px rgba(16, 32, 48, 0.12);
}

/* 27.7 图标方块：品牌渐变底 + 更柔的圆角 */
.card__icon {
  border-radius: 13px;
  background: linear-gradient(140deg, var(--brand-050) 0%, #eaf1f7 100%);
  box-shadow: inset 0 0 0 1px rgba(15, 59, 87, 0.06);
  transition: transform 0.4s var(--ease), background 0.4s var(--ease);
}
.card:hover .card__icon {
  transform: translateY(-2px);
  background: linear-gradient(140deg, var(--brand-100) 0%, var(--brand-050) 100%);
}

/* 27.8 Hero：叠加一层纵深光，标题柔和投影 */
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(115% 75% at 12% 55%,
              rgba(7, 24, 36, 0.42) 0%, rgba(7, 24, 36, 0) 62%);
}
.hero__title {
  /* 模糊半径收敛：标题行已改为遮罩揭示，过大的阴影会在遮罩边缘被裁出硬边 */
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.28);
}
.hero__badge {
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

/* 27.9 小标题短线：渐变化，弱化生硬的纯色块 */
.eyebrow::before {
  width: 30px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent) 0%, rgba(201, 162, 75, 0.18) 100%);
}

/* 27.10 主按钮：立体渐变 + 光晕 */
.btn--primary {
  background-image: linear-gradient(135deg, var(--brand-600) 0%, var(--brand) 100%);
  box-shadow: 0 6px 18px rgba(15, 59, 87, 0.22);
}
.btn--primary:hover {
  box-shadow: 0 10px 26px rgba(15, 59, 87, 0.28);
  transform: translateY(-1px);
}

/* 27.11 统计带：数字更通透，分隔线渐隐 */
/* 渐变文字需浏览器支持裁剪后才生效，否则保持纯色，避免文字不可见 */
@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .stat-box__value {
    background: linear-gradient(135deg, var(--brand) 0%, var(--brand-500) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
  }
}
.stat-box__value { letter-spacing: -0.02em; }
.stat-box + .stat-box::before {
  top: 16px;
  bottom: 16px;
  background: linear-gradient(to bottom,
              rgba(228, 233, 238, 0) 0%, var(--line) 50%, rgba(228, 233, 238, 0) 100%);
}

/* 27.12 大屏留白：宽屏时拉开呼吸感 */
@media (min-width: 1200px) {
  .section { padding: 112px 0; }
  .section--tight { padding: 88px 0; }
  .grid { gap: 32px; }
  .section-head { margin-bottom: 62px; }
}

/* 27.13 选择态与键盘焦点环（精致且不喧宾夺主） */
::selection {
  background: rgba(15, 59, 87, 0.14);
  color: var(--ink);
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* 27.14 表单控件：更细腻的聚焦态 */
input:focus,
textarea:focus,
select:focus {
  border-color: var(--brand-400);
  box-shadow: 0 0 0 4px rgba(28, 106, 143, 0.10);
}

/* ==========================================================================
   28. 首屏入场编排（内容即开场）
   --------------------------------------------------------------------------
   不做点击门槛、不做加载遮罩：页面加载即播放，约 1.6 秒内收敛，
   用户无需任何操作即可看到全部内容并自由滚动。
   节奏：标题逐行推出 → 徽标 → 定位 → 按钮 → 数据。

   ⚠️ 关键约束：入场必须由 CSS animation 驱动，不依赖 JS 加类。
   本项目曾因「初始 opacity:0 + JS 加 .is-ready 才显示」导致脚本失败时
   首屏永久空白。改用 animation + fill:both 后，初始态由 from 提供、
   终态由 to 锁定，无论 JS 死活首屏必定可见。
   全部尊重 prefers-reduced-motion（见第 26 章）。
   ========================================================================== */

/* 28.1 标题行遮罩：靠 overflow 裁切 + 位移推出文字 */
.hero__title .line {
  display: block;
  overflow: hidden;
  /* 上下左右各留一点出血，避免中文下沿与文字阴影被硬裁 */
  padding: 0.08em 0.08em 0.14em;
  margin: -0.08em -0.08em -0.14em;
}
.hero__title .line > * {
  display: inline-block;
  transform: translateY(115%);
}

/* 逐行揭示（纯 CSSanimation，加载即播，无需 JS 触发） */
.hero__title .line > * {
  animation: heroLineIn 1s var(--ease) 0.12s both;
}
.hero__title .line:nth-child(2) > * { animation-delay: 0.26s; }
@keyframes heroLineIn {
  from { transform: translateY(115%); }
  to   { transform: translateY(0); }
}

/* 其余内容依次推进：徽标 → 定位 → 按钮 → 数据，全程约 1.6s 收敛 */
.hero .hero__badge   { animation: heroItemIn 0.85s var(--ease) 0.38s both; }
.hero .hero__desc    { animation: heroItemIn 0.85s var(--ease) 0.50s both; }
.hero .hero__actions { animation: heroItemIn 0.85s var(--ease) 0.62s both; }
.hero .hero__stats   { animation: heroItemIn 0.90s var(--ease) 0.74s both; }
@keyframes heroItemIn {
  from { opacity: 0; transform: translateY(26px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* 预加载期间锁滚动 */

/* 28.3 鼠标/滚动视差：JS 写入 --px --py --sy */
.hero__slides {
  transform: translate3d(calc(var(--px, 0) * 12px), calc(var(--py, 0) * 12px), 0);
  transition: transform 0.6s var(--ease);
}
.hero__content {
  transform: translate3d(calc(var(--px, 0) * -6px), calc(var(--py, 0) * -6px), 0);
}

@media (max-width: 900px) {
  .hero__slides, .hero__content { transform: none; }
}

/* 28.4 顶部阅读进度线 */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0;
  z-index: 200;
  background: linear-gradient(90deg, var(--brand) 0%, var(--accent) 100%);
  transition: width 0.1s linear;
  pointer-events: none;
}