/* ==========================================================================
   长沙市君正电力科技有限公司 - 官网样式表
   工业稳重商务风格 | 蓝灰主色调 | PC + 移动端自适应
   ========================================================================== */

/* ---------- 设计变量 ---------- */
:root {
  --c-navy-900: #0b1f38;
  --c-navy-800: #12304f;
  --c-navy-700: #1a4470;
  --c-blue-600: #1f5fa8;
  --c-blue-500: #2a78c9;
  --c-blue-400: #4a94e0;
  --c-blue-50: #eef5fd;
  --c-gray-900: #1c2430;
  --c-gray-800: #2c3745;
  --c-gray-700: #46536a;
  --c-gray-500: #6b7789;
  --c-gray-400: #9aa5b4;
  --c-gray-300: #c8d0da;
  --c-gray-200: #e2e7ed;
  --c-gray-100: #f1f4f8;
  --c-gray-50: #f7f9fc;
  --c-white: #ffffff;
  --c-accent: #d9a13b;
  --c-accent-deep: #b8822a;

  --font-sans: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB",
    "Helvetica Neue", Arial, sans-serif;
  --shadow-sm: 0 1px 3px rgba(11, 31, 56, 0.06);
  --shadow-md: 0 4px 16px rgba(11, 31, 56, 0.08);
  --shadow-lg: 0 12px 32px rgba(11, 31, 56, 0.12);
  --radius: 6px;
  --radius-lg: 10px;
  --container: 1200px;
  --header-h: 78px;
  --transition: 0.25s ease;
}

/* ---------- 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-sans);
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-gray-800);
  background: var(--c-white);
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; border: 0; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5 { margin: 0 0 0.6em; font-weight: 700; line-height: 1.35; color: var(--c-navy-900); }
p { margin: 0 0 1em; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 布局容器 ---------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 20px; }

.section { padding: 78px 0; }
.section--gray { background: var(--c-gray-50); }
.section--navy {
  background: linear-gradient(135deg, var(--c-navy-900) 0%, var(--c-navy-700) 100%);
  color: #d7e3f2;
}
.section--navy h2, .section--navy h3 { color: #fff; }

/* ---------- 通用标题 ---------- */
.sec-head { text-align: center; margin-bottom: 46px; }
.sec-head__eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-blue-500);
  font-weight: 700;
  margin-bottom: 12px;
}
.section--navy .sec-head__eyebrow { color: var(--c-blue-400); }
.sec-head__title {
  font-size: 30px;
  margin-bottom: 14px;
  position: relative;
  display: inline-block;
  padding-bottom: 16px;
}
.sec-head__title::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 52px;
  height: 3px;
  background: var(--c-blue-500);
  border-radius: 2px;
}
.sec-head__desc { max-width: 760px; margin: 0 auto; color: var(--c-gray-500); font-size: 15px; }
.section--navy .sec-head__desc { color: #a8bdd6; }

.sec-head--left { text-align: left; }
.sec-head--left .sec-head__title::after { left: 0; transform: none; }
.sec-head--left .sec-head__desc { margin: 0; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  background: transparent;
}
.btn--primary { background: var(--c-blue-600); color: #fff; }
.btn--primary:hover { background: var(--c-blue-700, #1a4f8c); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn--outline { border-color: rgba(255,255,255,0.55); color: #fff; }
.btn--outline:hover { background: rgba(255,255,255,0.14); border-color: #fff; }
.btn--ghost { border-color: var(--c-gray-300); color: var(--c-navy-800); background: #fff; }
.btn--ghost:hover { border-color: var(--c-blue-500); color: var(--c-blue-600); }
.btn--accent { background: var(--c-accent); color: #fff; }
.btn--accent:hover { background: var(--c-accent-deep); }
.btn--block { width: 100%; }
.btn--lg { padding: 15px 34px; font-size: 16px; }

/* ---------- 顶部信息条 ---------- */
.topbar {
  background: var(--c-navy-900);
  color: #9db4cd;
  font-size: 13px;
  line-height: 40px;
}
.topbar__inner { display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.topbar__left { display: flex; gap: 22px; flex-wrap: wrap; }
.topbar__right { display: flex; gap: 18px; align-items: center; }
.topbar a:hover { color: #fff; }
.topbar__badge { color: var(--c-accent); font-weight: 600; }
.topbar svg { width: 14px; height: 14px; vertical-align: -2px; margin-right: 4px; }
.topbar__badge svg { margin-right: 4px; }
.case-card__meta svg { width: 13px; height: 13px; vertical-align: -2px; margin-right: 3px; }
.footer-contact svg { width: 13px; height: 13px; vertical-align: -2px; }

/* ---------- 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 900;
  background: #fff;
  border-bottom: 1px solid var(--c-gray-200);
  transition: box-shadow var(--transition);
}
.site-header.is-scrolled { box-shadow: var(--shadow-md); }

.nav { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 24px; }

.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand__mark {
  width: 42px; height: 42px; flex-shrink: 0;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--c-blue-600), var(--c-navy-800));
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 17px; letter-spacing: 0.02em;
}
.brand__text { display: flex; flex-direction: column; line-height: 1.25; }
.brand__name { font-size: 17px; font-weight: 700; color: var(--c-navy-900); white-space: nowrap; }
.brand__sub { font-size: 11px; color: var(--c-gray-500); letter-spacing: 0.06em; }

.nav__menu { display: flex; align-items: center; gap: 2px; }
.nav__link {
  display: block;
  padding: 10px 11px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--c-gray-800);
  border-radius: var(--radius);
  position: relative;
  white-space: nowrap;
}
.nav__link:hover { color: var(--c-blue-600); background: var(--c-blue-50); }
.nav__link.is-active { color: var(--c-blue-600); }
.nav__link.is-active::after {
  content: ""; position: absolute; left: 11px; right: 11px; bottom: 2px;
  height: 2px; background: var(--c-blue-600); border-radius: 1px;
}
.nav__cta { margin-left: 12px; }

.nav__toggle {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid var(--c-gray-300);
  border-radius: var(--radius);
  background: #fff;
  cursor: pointer;
  padding: 0;
  align-items: center; justify-content: center;
  flex-direction: column; gap: 5px;
}
.nav__toggle span { display: block; width: 20px; height: 2px; background: var(--c-navy-800); border-radius: 1px; transition: transform var(--transition), opacity var(--transition); }
.nav__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.nav__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 首页 Banner ---------- */
.hero {
  position: relative;
  min-height: 560px;
  background: var(--c-navy-900);
  overflow: hidden;
}
.hero__slides { position: relative; min-height: 560px; }
.hero__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.8s ease, visibility 0.8s ease;
  display: flex;
  align-items: center;
  background: linear-gradient(115deg, rgba(11,31,56,0.94) 0%, rgba(18,48,79,0.86) 45%, rgba(31,95,168,0.62) 100%);
}
.hero__slide.is-active { opacity: 1; visibility: visible; position: relative; }
.hero__slide::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 62px 62px;
  pointer-events: none;
}
.hero__content { position: relative; z-index: 2; padding: 86px 0; max-width: 800px; }
.hero__title { font-size: 42px; color: #fff; line-height: 1.28; margin-bottom: 20px; letter-spacing: -0.01em; }
.hero__sub { font-size: 19px; color: #cfe0f2; margin-bottom: 14px; font-weight: 500; }
.hero__highlight {
  font-size: 16px;
  color: var(--c-accent);
  margin-bottom: 34px;
  padding-left: 16px;
  border-left: 3px solid var(--c-accent);
}
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero__dots {
  position: absolute; left: 0; right: 0; bottom: 26px;
  display: flex; justify-content: center; gap: 10px; z-index: 5;
}
.hero__dot {
  width: 34px; height: 4px; border-radius: 2px;
  background: rgba(255,255,255,0.34);
  border: 0; padding: 0; cursor: pointer;
  transition: background var(--transition), width var(--transition);
}
.hero__dot.is-active { background: var(--c-accent); width: 48px; }

.hero__strip {
  position: relative; z-index: 6;
  background: rgba(7, 20, 36, 0.72);
  border-top: 1px solid rgba(255,255,255,0.08);
}
.hero__strip-inner {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: rgba(255,255,255,0.08);
}
.hero__strip-item {
  background: rgba(7, 20, 36, 0.72);
  padding: 22px 20px;
  text-align: center;
  color: #c4d6ea;
  font-size: 14px;
}
.hero__strip-item strong { display: block; color: #fff; font-size: 15px; margin-bottom: 3px; }

/* ---------- 优势卡片 ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.adv-card {
  background: #fff;
  border: 1px solid var(--c-gray-200);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.adv-card::before {
  content: ""; position: absolute; left: 0; top: 0; width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--c-blue-500), var(--c-navy-700));
  transform: scaleX(0); transform-origin: left; transition: transform var(--transition);
}
.adv-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: var(--c-blue-50); }
.adv-card:hover::before { transform: scaleX(1); }
.adv-card__icon {
  width: 52px; height: 52px; border-radius: 10px;
  background: var(--c-blue-50);
  color: var(--c-blue-600);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.adv-card__icon svg { width: 26px; height: 26px; }
.adv-card__title { font-size: 17px; margin-bottom: 10px; }
.adv-card__text { font-size: 14px; color: var(--c-gray-500); margin: 0; line-height: 1.8; }

/* ---------- 业务板块 ---------- */
.svc-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.svc-card {
  display: flex; gap: 20px;
  background: #fff;
  border: 1px solid var(--c-gray-200);
  border-radius: var(--radius-lg);
  padding: 30px 28px;
  transition: all var(--transition);
}
.svc-card:hover { border-color: var(--c-blue-400); box-shadow: var(--shadow-md); }
.svc-card__icon {
  width: 56px; height: 56px; flex-shrink: 0;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--c-blue-600), var(--c-navy-700));
  color: #fff;
  display: flex; align-items: center; justify-content: center;
}
.svc-card__icon svg { width: 28px; height: 28px; }
.svc-card__body { flex: 1; min-width: 0; }
.svc-card__title { font-size: 18px; margin-bottom: 8px; }
.svc-card__title a:hover { color: var(--c-blue-600); }
.svc-card__text { font-size: 14px; color: var(--c-gray-500); margin-bottom: 14px; }
.svc-card__tags { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 14px; }
.tag {
  font-size: 12px; padding: 3px 10px; border-radius: 20px;
  background: var(--c-gray-100); color: var(--c-gray-700);
}
.svc-card__more { font-size: 13px; font-weight: 600; color: var(--c-blue-600); }
.svc-card__more:hover { color: var(--c-navy-800); }

/* ---------- 资质展示 ---------- */
.cert-preview {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.cert-thumb {
  background: #fff;
  border: 1px solid var(--c-gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition);
}
.cert-thumb:hover { box-shadow: var(--shadow-lg); border-color: var(--c-blue-400); transform: translateY(-3px); }
.cert-thumb__img {
  aspect-ratio: 3 / 4;
  background: var(--c-gray-100);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  position: relative;
}
.cert-thumb__img img { width: 100%; height: 100%; object-fit: cover; }
.cert-thumb__ph { color: var(--c-gray-400); text-align: center; padding: 16px; font-size: 13px; }
.cert-thumb__ph svg { width: 40px; height: 40px; margin: 0 auto 8px; display: block; color: var(--c-gray-300); }
.cert-thumb__zoom {
  position: absolute; right: 8px; bottom: 8px;
  background: rgba(11,31,56,0.78); color: #fff;
  font-size: 11px; padding: 3px 9px; border-radius: 20px;
}
.cert-thumb__meta { padding: 14px 16px; }
.cert-thumb__cat { font-size: 11px; color: var(--c-blue-600); font-weight: 700; letter-spacing: 0.04em; }
.cert-thumb__title { font-size: 14px; font-weight: 600; color: var(--c-navy-900); margin: 5px 0 0; line-height: 1.5; }

/* ---------- 案例 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-card {
  background: #fff;
  border: 1px solid var(--c-gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  display: flex; flex-direction: column;
}
.case-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.case-card__cover {
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, var(--c-navy-800), var(--c-blue-600));
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.9); position: relative; overflow: hidden;
}
.case-card__cover img { width: 100%; height: 100%; object-fit: cover; }
.case-card__cover svg { width: 46px; height: 46px; opacity: 0.6; }
.case-card__cover-label {
  position: absolute; left: 12px; top: 12px;
  background: rgba(255,255,255,0.92); color: var(--c-navy-800);
  font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 20px;
}
.case-card__body { padding: 22px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.case-card__title { font-size: 16px; margin-bottom: 10px; line-height: 1.5; }
.case-card__text { font-size: 13.5px; color: var(--c-gray-500); flex: 1; }
.case-card__meta { display: flex; gap: 14px; flex-wrap: wrap; font-size: 12.5px; color: var(--c-gray-400); margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--c-gray-200); }

/* ---------- 资讯 ---------- */
.news-list { display: grid; gap: 16px; }
.news-item {
  display: flex; align-items: center; gap: 24px;
  background: #fff; border: 1px solid var(--c-gray-200);
  border-radius: var(--radius-lg);
  padding: 20px 26px;
  transition: all var(--transition);
}
.news-item:hover { border-color: var(--c-blue-400); box-shadow: var(--shadow-md); }
.news-item__date {
  flex-shrink: 0; width: 76px; text-align: center;
  border-right: 1px solid var(--c-gray-200); padding-right: 22px;
}
.news-item__day { font-size: 26px; font-weight: 700; color: var(--c-blue-600); line-height: 1.1; }
.news-item__ym { font-size: 12px; color: var(--c-gray-400); }
.news-item__body { flex: 1; min-width: 0; }
.news-item__title { font-size: 16px; margin-bottom: 5px; }
.news-item__title:hover { color: var(--c-blue-600); }
.news-item__desc { font-size: 13.5px; color: var(--c-gray-500); margin: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------- 页面通用 Hero ---------- */
.page-hero {
  background: linear-gradient(115deg, var(--c-navy-900) 0%, var(--c-navy-700) 60%, var(--c-blue-600) 140%);
  color: #fff;
  padding: 62px 0 54px;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 58px 58px;
}
.page-hero__inner { position: relative; z-index: 2; }
.page-hero__title { color: #fff; font-size: 32px; margin-bottom: 10px; }
.page-hero__desc { color: #b6cae0; max-width: 720px; margin: 0; font-size: 15px; }

.breadcrumb { font-size: 13px; color: #8ba3bd; margin-top: 16px; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span { margin: 0 8px; }

/* ---------- 文章 / 富文本 ---------- */
.prose { font-size: 15.5px; line-height: 1.95; color: var(--c-gray-700); }
.prose h2 { font-size: 21px; margin: 34px 0 14px; padding-left: 14px; border-left: 4px solid var(--c-blue-500); }
.prose h3 { font-size: 17.5px; margin: 26px 0 10px; color: var(--c-navy-800); }
.prose ul { margin: 0 0 18px; padding-left: 0; }
.prose ul li { position: relative; padding-left: 20px; margin-bottom: 8px; }
.prose ul li::before {
  content: ""; position: absolute; left: 2px; top: 12px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--c-blue-500);
}
.prose p { margin-bottom: 16px; }
.prose strong { color: var(--c-navy-900); }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--c-gray-200); border-radius: var(--radius-lg); }
.data-table { min-width: 620px; font-size: 14px; }
.data-table th, .data-table td { padding: 13px 16px; text-align: left; border-bottom: 1px solid var(--c-gray-200); }
.data-table th { background: var(--c-gray-100); font-weight: 700; color: var(--c-navy-900); white-space: nowrap; }
.data-table tr:last-child td { border-bottom: 0; }
.data-table tbody tr:hover { background: var(--c-blue-50); }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 40px; align-items: start; }
.info-list { display: grid; gap: 18px; }
.info-item { display: flex; gap: 16px; }
.info-item__icon {
  width: 44px; height: 44px; flex-shrink: 0; border-radius: 10px;
  background: var(--c-blue-50); color: var(--c-blue-600);
  display: flex; align-items: center; justify-content: center;
}
.info-item__icon svg { width: 21px; height: 21px; }
.info-item__label { font-size: 12.5px; color: var(--c-gray-400); letter-spacing: 0.04em; }
.info-item__value { font-size: 15.5px; font-weight: 600; color: var(--c-navy-900); word-break: break-all; }
.info-item__value a:hover { color: var(--c-blue-600); }

.form-card {
  background: #fff; border: 1px solid var(--c-gray-200);
  border-radius: var(--radius-lg); padding: 32px 30px;
  box-shadow: var(--shadow-sm);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; }
.field__label { display: block; font-size: 13.5px; font-weight: 600; color: var(--c-gray-700); margin-bottom: 7px; }
.field__label .req { color: #d64545; }
.field__input, .field__select, .field__textarea {
  width: 100%; padding: 11px 14px;
  border: 1px solid var(--c-gray-300); border-radius: var(--radius);
  background: #fff; color: var(--c-gray-800);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.field__textarea { resize: vertical; min-height: 118px; }
.field__input:focus, .field__select:focus, .field__textarea:focus {
  outline: none; border-color: var(--c-blue-500); box-shadow: 0 0 0 3px rgba(42,120,201,0.12);
}
.field__err { display: none; font-size: 12.5px; color: #d64545; margin-top: 5px; }
.field.has-error .field__input, .field.has-error .field__textarea { border-color: #d64545; }
.field.has-error .field__err { display: block; }

.form-alert { display: none; padding: 13px 16px; border-radius: var(--radius); font-size: 14px; margin-bottom: 18px; }
.form-alert.is-ok { display: block; background: #eaf7ef; border: 1px solid #b7e0c6; color: #1f7a45; }
.form-alert.is-err { display: block; background: #fdeeee; border: 1px solid #f0c2c2; color: #b23b3b; }

.map-box {
  border: 1px solid var(--c-gray-200); border-radius: var(--radius-lg);
  overflow: hidden; min-height: 320px; background: var(--c-gray-100);
  display: flex; align-items: center; justify-content: center;
}
.map-box iframe { width: 100%; height: 380px; border: 0; display: block; }
.map-placeholder { text-align: center; color: var(--c-gray-400); padding: 40px 20px; font-size: 14px; }

/* ---------- 数据统计条 ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: rgba(255,255,255,0.12); }
.stat { background: var(--c-navy-900); padding: 30px 20px; text-align: center; }
.stat__num { font-size: 32px; font-weight: 700; color: var(--c-accent); line-height: 1.1; }
.stat__label { font-size: 14px; color: #a8bdd6; margin-top: 6px; }

/* ---------- CTA ---------- */
.cta-band {
  background: linear-gradient(100deg, var(--c-navy-900), var(--c-blue-600));
  color: #fff; padding: 46px 0;
}
.cta-band__inner { display: flex; align-items: center; justify-content: space-between; gap: 26px; flex-wrap: wrap; }
.cta-band h3 { color: #fff; font-size: 22px; margin: 0 0 6px; }
.cta-band p { margin: 0; color: #c3d7ec; font-size: 14.5px; }
.cta-band__actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--c-navy-900); color: #93a9c1; font-size: 14px; padding: 54px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 34px; padding-bottom: 40px; }
.footer-title { color: #fff; font-size: 15.5px; margin-bottom: 16px; font-weight: 700; }
.footer-about { line-height: 1.9; font-size: 13.5px; color: #8ea5be; }
.footer-nav { display: grid; gap: 9px; font-size: 13.5px; }
.footer-nav a:hover { color: #fff; }
.footer-contact { display: grid; gap: 11px; font-size: 13.5px; }
.footer-contact strong { color: #fff; font-weight: 600; }
.footer-phone { font-size: 19px; font-weight: 700; color: #fff; letter-spacing: 0.02em; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.09);
  padding: 18px 0; font-size: 12.5px; color: #7d94ad;
  display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap;
}
.footer-bottom a:hover { color: #fff; }

/* ---------- 悬浮联系 ---------- */
.float-bar {
  position: fixed; right: 18px; bottom: 88px; z-index: 950;
  display: flex; flex-direction: column; gap: 8px;
}
.float-btn {
  width: 58px; padding: 11px 4px;
  background: #fff; border: 1px solid var(--c-gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  display: flex; flex-direction: column; align-items: center; gap: 5px;
  font-size: 11.5px; color: var(--c-gray-700); font-weight: 600;
  cursor: pointer; transition: all var(--transition);
  text-align: center; line-height: 1.25;
}
.float-btn svg { width: 21px; height: 21px; color: var(--c-blue-600); }
.float-btn:hover { background: var(--c-blue-600); color: #fff; border-color: var(--c-blue-600); transform: translateY(-2px); }
.float-btn:hover svg { color: #fff; }
.float-btn--top svg { color: var(--c-gray-500); }

/* ---------- 图片灯箱 ---------- */
.lightbox {
  position: fixed; inset: 0; z-index: 1200;
  background: rgba(8, 18, 32, 0.93);
  display: none; align-items: center; justify-content: center;
  padding: 40px 20px;
}
.lightbox.is-open { display: flex; animation: fadeIn 0.2s ease; }
.lightbox__img { max-width: 92vw; max-height: 84vh; object-fit: contain; border-radius: 4px; box-shadow: 0 20px 60px rgba(0,0,0,0.5); }
.lightbox__caption { position: absolute; bottom: 26px; left: 0; right: 0; text-align: center; color: #dbe6f2; font-size: 14.5px; padding: 0 20px; }
.lightbox__close {
  position: absolute; top: 20px; right: 22px;
  width: 44px; height: 44px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.3); background: rgba(255,255,255,0.08);
  color: #fff; font-size: 24px; line-height: 1; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}
.lightbox__close:hover { background: rgba(255,255,255,0.2); }
.lightbox__nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 48px; height: 48px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.3); background: rgba(255,255,255,0.08);
  color: #fff; font-size: 22px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}
.lightbox__nav:hover { background: rgba(255,255,255,0.2); }
.lightbox__nav--prev { left: 20px; }
.lightbox__nav--next { right: 20px; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- 工具类 ---------- */
.loading { text-align: center; padding: 60px 20px; color: var(--c-gray-400); font-size: 14px; }
.loading__spinner {
  width: 34px; height: 34px; margin: 0 auto 14px;
  border: 3px solid var(--c-gray-200); border-top-color: var(--c-blue-500);
  border-radius: 50%; animation: spin 0.8s linear infinite;
}
.empty { text-align: center; padding: 56px 20px; color: var(--c-gray-400); font-size: 14.5px; }
.empty svg { width: 46px; height: 46px; color: var(--c-gray-300); margin: 0 auto 12px; display: block; }

.filter-bar { display: flex; gap: 9px; flex-wrap: wrap; justify-content: center; margin-bottom: 34px; }
.filter-chip {
  padding: 8px 18px; border-radius: 22px;
  border: 1px solid var(--c-gray-300); background: #fff;
  color: var(--c-gray-700); font-size: 14px; font-weight: 600; cursor: pointer;
  transition: all var(--transition);
}
.filter-chip:hover { border-color: var(--c-blue-500); color: var(--c-blue-600); }
.filter-chip.is-active { background: var(--c-blue-600); border-color: var(--c-blue-600); color: #fff; }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.mt-32 { margin-top: 32px; }
.text-center { text-align: center; }

/* ==========================================================================
   响应式
   ========================================================================== */

@media (max-width: 1080px) {
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-preview { grid-template-columns: repeat(3, 1fr); }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero__title { font-size: 36px; }
}

/* 导航共 9 项，收窄断点提前到 1100px，避免中等屏幕横向溢出 */
@media (max-width: 1100px) {
  .topbar__left { display: none; }
  .topbar__inner { justify-content: center; }
  .nav__toggle { display: flex; }
  .nav__menu {
    position: fixed; left: 0; right: 0; top: var(--header-h);
    background: #fff;
    flex-direction: column; align-items: stretch; gap: 0;
    padding: 10px 16px 22px;
    border-bottom: 1px solid var(--c-gray-200);
    box-shadow: var(--shadow-lg);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    transform: translateY(-12px); opacity: 0; visibility: hidden;
    transition: all var(--transition);
  }
  .nav__menu.is-open { transform: translateY(0); opacity: 1; visibility: visible; }
  .nav__link { padding: 14px 12px; border-bottom: 1px solid var(--c-gray-100); border-radius: 0; font-size: 15.5px; }
  .nav__link.is-active::after { display: none; }
  .nav__cta { margin: 16px 12px 0; }
  .nav__cta .btn { width: 100%; }

  .svc-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 30px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .hero__strip-inner { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 56px 0; }
}

@media (max-width: 720px) {
  :root { --header-h: 64px; }
  body { font-size: 14.5px; }
  .container { padding: 0 16px; }

  .brand__mark { width: 36px; height: 36px; font-size: 15px; }
  .brand__name { font-size: 15.5px; }
  .brand__sub { display: none; }

  .hero, .hero__slides, .hero__slide { min-height: auto; }
  .hero__content { padding: 52px 0 46px; }
  .hero__title { font-size: 25px; }
  .hero__sub { font-size: 15.5px; }
  .hero__highlight { font-size: 14px; margin-bottom: 26px; }
  .hero__actions { gap: 10px; }
  .hero__actions .btn { flex: 1 1 auto; padding: 12px 18px; font-size: 14.5px; }
  .hero__dots { bottom: 16px; }

  .sec-head { margin-bottom: 30px; }
  .sec-head__title { font-size: 22px; }
  .sec-head__desc { font-size: 14px; }

  .adv-grid, .cert-preview, .case-grid, .grid-2 { grid-template-columns: 1fr; }
  .adv-card { padding: 24px 20px; }
  .svc-card { flex-direction: column; gap: 14px; padding: 24px 20px; }
  .svc-card__icon { width: 48px; height: 48px; }
  .svc-card__icon svg { width: 24px; height: 24px; }

  .news-item { flex-direction: column; align-items: flex-start; gap: 12px; padding: 18px 20px; }
  .news-item__date { width: auto; border-right: 0; border-bottom: 1px solid var(--c-gray-200); padding: 0 0 10px; display: flex; align-items: baseline; gap: 8px; }
  .news-item__day { font-size: 20px; }
  .news-item__ym { font-size: 12px; }

  .page-hero { padding: 40px 0 34px; }
  .page-hero__title { font-size: 23px; }
  .page-hero__desc { font-size: 14px; }

  .form-card { padding: 24px 20px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }

  .footer-grid { grid-template-columns: 1fr; gap: 26px; padding-bottom: 30px; }
  .site-footer { padding-top: 40px; }
  .footer-bottom { flex-direction: column; text-align: center; gap: 6px; }

  .float-bar { right: 10px; bottom: 76px; gap: 6px; }
  .float-btn { width: 50px; padding: 9px 3px; font-size: 10.5px; border-radius: 8px; }
  .float-btn svg { width: 18px; height: 18px; }

  .lightbox__nav { width: 38px; height: 38px; font-size: 18px; }
  .lightbox__nav--prev { left: 8px; }
  .lightbox__nav--next { right: 8px; }
  .lightbox__close { width: 38px; height: 38px; top: 12px; right: 12px; font-size: 20px; }

  .prose { font-size: 15px; }
  .prose h2 { font-size: 19px; }
  .prose h3 { font-size: 16.5px; }

  .cta-band { padding: 34px 0; }
  .cta-band h3 { font-size: 18px; }
  .cta-band__actions { width: 100%; }
  .cta-band__actions .btn { flex: 1; }

  .map-box iframe { height: 280px; }
  .case-card__body { padding: 18px; }
}

@media (max-width: 400px) {
  .hero__title { font-size: 22px; }
  .stats { grid-template-columns: 1fr; }
}

/* ---------- 打印 ---------- */
@media print {
  .site-header, .float-bar, .topbar, .cta-band__actions { display: none; }
}