/* ==========================================================================
   安训云 · 企业官网样式表
   设计基调：专业 / 可信 / 简洁
   主色：深蓝（信任、专业）｜强调色：橙（安全警示、行动引导）
   ========================================================================== */

/* ---------- 设计变量 ---------- */
:root {
  /* 品牌色 */
  --c-primary: #0B3C5D;
  --c-primary-dark: #082C45;
  --c-primary-light: #15567F;
  --c-accent: #F47B34;
  --c-accent-dark: #D9621F;

  /* 中性色 */
  --c-text: #1F2A37;
  --c-text-sub: #4B5A6A;
  --c-muted: #7A8794;
  --c-line: #E4EAF0;
  --c-bg: #FFFFFF;
  --c-tint: #F5F8FA;
  --c-tint-2: #EEF3F7;

  /* 尺寸 */
  --container: 1200px;
  --radius: 8px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 3px rgba(11, 60, 93, 0.06);
  --shadow: 0 6px 20px rgba(11, 60, 93, 0.08);
  --shadow-lg: 0 14px 38px rgba(11, 60, 93, 0.14);

  --header-h: 72px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC",
               -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { margin: 0; line-height: 1.35; font-weight: 700; letter-spacing: 0.01em; }
p { margin: 0; }
ul, ol, dl, dd { margin: 0; padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }

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

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--c-primary);
  color: #fff;
  padding: 10px 18px;
}
.skip-link:focus { left: 12px; top: 12px; }

/* ---------- 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;
  line-height: 1.4;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color .22s var(--ease), color .22s var(--ease),
              border-color .22s var(--ease), transform .22s var(--ease), box-shadow .22s var(--ease);
}
.btn:active { transform: translateY(1px); }
.btn--sm { padding: 9px 18px; font-size: 14px; }
.btn--lg { padding: 15px 34px; font-size: 16px; }
.btn--block { width: 100%; }

.btn--primary {
  background: var(--c-accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(244, 123, 52, 0.28);
}
.btn--primary:hover { background: var(--c-accent-dark); box-shadow: 0 8px 22px rgba(217, 98, 31, 0.34); }

.btn--ghost {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(2px);
}
.btn--ghost:hover { background: rgba(255, 255, 255, 0.16); border-color: #fff; }

.btn--light { background: #fff; color: var(--c-primary); }
.btn--light:hover { background: #EEF3F7; }

.btn--outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.55);
}
.btn--outline:hover { background: rgba(255, 255, 255, 0.12); border-color: #fff; }

.link-arrow { color: var(--c-accent); font-weight: 600; }
.link-arrow:hover { color: var(--c-accent-dark); }

/* ---------- 图片占位符 ---------- */
.ph {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  overflow: hidden;
  border: 1px dashed rgba(11, 60, 93, 0.28);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(11, 60, 93, 0.07) 25%, transparent 25%, transparent 50%,
                    rgba(11, 60, 93, 0.07) 50%, rgba(11, 60, 93, 0.07) 75%, transparent 75%);
  background-size: 16px 16px;
  background-color: var(--c-tint-2);
  color: var(--c-text-sub);
  text-align: center;
}
.ph__label { font-size: 14px; font-weight: 600; }
.ph__hint { font-size: 12px; color: var(--c-muted); }
/* 场景图容器（原占位样式，已替换为 AI 生成实拍风场景图） */
.hero__frame,
.card__figure,
.value__visual {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
}
.card__figure { margin-top: 18px; }
.hero__frame img,
.card__figure img,
.value__visual img {
  width: 100%;
  height: auto;
}
.ph--cert { aspect-ratio: 3 / 4; width: 100%; border-radius: 6px; }
.ph--qr { aspect-ratio: 1 / 1; width: 140px; }

/* ---------- 顶部信息条 ---------- */
.topbar {
  background: var(--c-primary-dark);
  color: rgba(255, 255, 255, 0.82);
  font-size: 13px;
}
.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 38px;
  gap: 16px;
}
.topbar__slogan { letter-spacing: 0.02em; }
.topbar__meta { display: flex; align-items: center; gap: 10px; }
.topbar__meta a:hover { color: #fff; }
.topbar__sep { opacity: 0.35; }

/* ---------- 主导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid var(--c-line);
  transition: box-shadow .25s var(--ease);
}
.site-header.is-stuck { box-shadow: 0 4px 18px rgba(11, 60, 93, 0.09); }

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: var(--header-h);
}

.brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand__mark {
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border-radius: 9px;
  background: linear-gradient(140deg, #E9F1F6, #D3E3EC);
}
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__text strong { font-size: 19px; color: var(--c-primary); letter-spacing: 0.06em; }
.brand__text em {
  font-style: normal;
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--c-muted);
}
.brand--footer .brand__text strong { color: #fff; }
.brand--footer .brand__text em { color: rgba(255, 255, 255, 0.55); }
.brand--footer .brand__mark { background: rgba(255, 255, 255, 0.12); }

.nav { margin-left: auto; }
.nav__list { display: flex; align-items: center; gap: 4px; }
.nav__link {
  display: block;
  position: relative;
  padding: 10px 14px;
  font-size: 15px;
  color: var(--c-text-sub);
  border-radius: 6px;
  transition: color .2s var(--ease), background-color .2s var(--ease);
}
.nav__link:hover { color: var(--c-primary); background: var(--c-tint); }
.nav__link.is-current { color: var(--c-primary); font-weight: 600; }
.nav__link.is-current::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 2px;
  height: 2px;
  background: var(--c-accent);
  border-radius: 2px;
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px; height: 42px;
  padding: 0;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: 8px;
  cursor: pointer;
}
.nav-toggle__bar {
  display: block;
  width: 20px; height: 2px;
  margin: 0 auto;
  background: var(--c-primary);
  border-radius: 2px;
  transition: transform .25s var(--ease), opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 76px;
  background: linear-gradient(150deg, #0B3C5D 0%, #0E4E76 48%, #14608C 100%);
  color: #fff;
}
.hero__bg {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 78% 18%, rgba(244, 123, 52, 0.22), transparent 42%),
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: auto, 56px 56px, 56px 56px;
  pointer-events: none;
}
.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}
.hero__eyebrow {
  display: inline-block;
  margin-bottom: 18px;
  padding: 5px 14px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.06em;
  background: rgba(255, 255, 255, 0.08);
}
.hero__title {
  font-size: clamp(30px, 4.2vw, 46px);
  line-height: 1.28;
  letter-spacing: 0.01em;
}
.hero__title-accent {
  display: block;
  margin-top: 6px;
  font-size: clamp(19px, 2.3vw, 26px);
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
}
.hero__desc {
  max-width: 34em;
  margin-top: 20px;
  font-size: 16.5px;
  color: rgba(255, 255, 255, 0.86);
}
.hero__desc strong { color: #fff; font-weight: 700; }

.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }

.hero__points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 30px;
  font-size: 14.5px;
  color: rgba(255, 255, 255, 0.88);
}
.hero__points li { position: relative; padding-left: 22px; }
.hero__points li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(244, 123, 52, 0.25);
}

.hero__visual { position: relative; }

/* ---------- 通用区块 ---------- */
.section { padding: 82px 0; }
.section--tint { background: var(--c-tint); border-block: 1px solid var(--c-line); }

.section__head { max-width: 760px; margin: 0 auto 52px; text-align: center; }
.section__eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--c-accent);
}
.section__title {
  font-size: clamp(24px, 2.9vw, 34px);
  color: var(--c-primary);
}
.section__title--left { text-align: left; }
.section__sub { margin-top: 14px; font-size: 16px; color: var(--c-text-sub); }

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

.card {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  transition: transform .28s var(--ease), box-shadow .28s var(--ease), border-color .28s var(--ease);
}
.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
  border-color: rgba(11, 60, 93, 0.18);
}

.card--service { position: relative; padding-top: 34px; }
.card__index {
  position: absolute;
  top: 22px; right: 24px;
  font-size: 30px;
  font-weight: 800;
  color: rgba(11, 60, 93, 0.10);
  letter-spacing: 0.02em;
}
.card__icon {
  display: grid;
  place-items: center;
  width: 54px; height: 54px;
  border-radius: 12px;
  background: linear-gradient(140deg, #E8F1F7, #D8E7F0);
  color: var(--c-primary);
}
.card__icon--plain {
  width: 46px; height: 46px;
  border-radius: 10px;
  background: var(--c-tint-2);
  color: var(--c-primary-light);
}
.card__title { margin-top: 18px; font-size: 19px; color: var(--c-primary); }
.card__desc { margin-top: 10px; font-size: 15px; color: var(--c-text-sub); }
.card__list { margin-top: 16px; }
.card__list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  color: var(--c-text-sub);
  line-height: 2;
}
.card__list li::before {
  content: "";
  position: absolute;
  left: 0; top: 14px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
}

/* ---------- 证书查验（双路径） ---------- */
.verify-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
  align-items: stretch;
}
.verify-card {
  display: flex;
  flex-direction: column;
  padding: 34px 30px 30px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-top: 3px solid var(--c-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform .28s var(--ease), box-shadow .28s var(--ease);
}
.verify-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.verify-card--gov { border-top-color: var(--c-accent); }

.verify-card__tag {
  align-self: flex-start;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(11, 60, 93, 0.08);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--c-primary);
}
.verify-card__tag--gov { background: rgba(244, 123, 52, 0.12); color: var(--c-accent-dark); }

.verify-card__title { margin-top: 14px; font-size: 21px; color: var(--c-primary); }
.verify-card__desc { margin-top: 10px; font-size: 15px; color: var(--c-text-sub); }
.verify-card form { margin-top: 22px; }

/* 官方查询入口 */
.gov-links { margin-top: 22px; display: grid; gap: 12px; }
.gov-links a {
  display: block;
  position: relative;
  padding: 16px 46px 16px 18px;
  background: var(--c-tint);
  border: 1px solid var(--c-line);
  border-radius: 10px;
  transition: border-color .22s var(--ease), background-color .22s var(--ease), transform .22s var(--ease);
}
.gov-links a:hover {
  border-color: var(--c-accent);
  background: #fff;
  transform: translateX(3px);
}
.gov-links a::after {
  content: "";
  position: absolute;
  right: 18px; top: 50%;
  width: 9px; height: 9px;
  margin-top: -6px;
  border-top: 2px solid var(--c-accent);
  border-right: 2px solid var(--c-accent);
  transform: rotate(45deg);
}
.gov-links__name {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--c-primary);
  line-height: 1.55;
}
.gov-links__meta { display: block; margin-top: 4px; font-size: 12.5px; color: var(--c-muted); }
.verify-card__note {
  margin-top: auto;
  padding-top: 20px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--c-muted);
}

/* ---------- 表单控件 ---------- */
.field { margin-bottom: 16px; }
.field label,
.field-row .field label {
  display: block;
  margin-bottom: 7px;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text);
}
.field label i { color: var(--c-accent); font-style: normal; }
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 11px 14px;
  font-size: 15px;
  font-family: inherit;
  color: var(--c-text);
  background: #fff;
  border: 1px solid #D6DFE8;
  border-radius: var(--radius);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field textarea { resize: vertical; min-height: 108px; }
.field input::placeholder,
.field textarea::placeholder { color: #A7B2BE; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--c-primary-light);
  box-shadow: 0 0 0 3px rgba(21, 86, 127, 0.12);
}
.field--row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 14px;
}
.checkbox { display: inline-flex; align-items: center; gap: 8px; font-weight: 400; margin: 0; cursor: pointer; }
.checkbox input { width: 16px; height: 16px; accent-color: var(--c-primary); }
.field--row a { color: var(--c-primary-light); font-size: 14px; }
.field--row a:hover { color: var(--c-accent); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field input.is-invalid,
.field select.is-invalid,
.field textarea.is-invalid {
  border-color: var(--c-accent-dark);
  box-shadow: 0 0 0 3px rgba(217, 98, 31, 0.12);
}
.form-note {
  margin-top: 12px;
  font-size: 12.5px;
  color: var(--c-muted);
  text-align: center;
  line-height: 1.6;
}
.form-note.is-ok { color: #1E8E5A; }
.form-note.is-warn { color: var(--c-accent-dark); }
/* 蜜罐字段：真人看不见（并有 label 提示"请勿填写"），自动填表机器人会中招 */
.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  pointer-events: none;
}

/* ---------- 登录区 ---------- */
.login {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 52px;
  align-items: start;
}
.login__desc { margin-top: 14px; color: var(--c-text-sub); max-width: 42em; }
.login__roles { margin-top: 24px; display: grid; gap: 12px; }
.login__roles li {
  padding: 14px 18px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-accent);
  border-radius: 8px;
  font-size: 14.5px;
  color: var(--c-text-sub);
}
.login__roles strong { color: var(--c-primary); font-weight: 700; }

.login__panel {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 32px 30px;
  box-shadow: var(--shadow);
}
.login__panel-title { font-size: 20px; color: var(--c-primary); margin-bottom: 14px; }
.login__panel-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-text-sub);
  margin-bottom: 22px;
}
.login__entries { margin-bottom: 26px; display: grid; gap: 14px; }
.login__entry {
  padding: 14px 16px;
  background: var(--c-tint);
  border-left: 3px solid var(--c-accent);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.login__entry dt {
  font-size: 15px;
  font-weight: 600;
  color: var(--c-primary);
  margin-bottom: 4px;
}
.login__entry dd { font-size: 13px; color: var(--c-text-sub); line-height: 1.6; }
.login__hint {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--c-line);
  font-size: 14px;
  color: var(--c-text-sub);
  text-align: center;
}

/* ---------- 服务流程 ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.step {
  position: relative;
  padding: 28px 22px 26px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  text-align: left;
  transition: transform .28s var(--ease), box-shadow .28s var(--ease);
}
.step:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.step + .step::before {
  content: "";
  position: absolute;
  left: -18px; top: 46px;
  width: 12px; height: 2px;
  background: var(--c-accent);
  opacity: 0.5;
}
.step__num {
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  margin-bottom: 18px;
  border-radius: 50%;
  background: var(--c-primary);
  color: #fff;
  font-size: 19px;
  font-weight: 800;
  box-shadow: 0 4px 12px rgba(11, 60, 93, 0.22);
}
.step__title { font-size: 18px; color: var(--c-primary); }
.step__desc { margin-top: 10px; font-size: 14.5px; color: var(--c-text-sub); }
.step__out {
  display: inline-block;
  margin-top: 16px;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--c-tint-2);
  font-size: 12.5px;
  color: var(--c-primary);
}

/* ---------- 资质 ---------- */
.certs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.cert { text-align: center; }
.cert figcaption { margin-top: 12px; font-size: 14.5px; color: var(--c-text-sub); }

.value {
  display: grid;
  grid-template-columns: 1fr 0.85fr;
  gap: 48px;
  align-items: center;
  margin-top: 56px;
  padding: 40px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
}
.value__title { font-size: 24px; color: var(--c-primary); margin-bottom: 22px; }
.value__list { display: grid; gap: 18px; }
.value__list li { padding-left: 2px; }
.value__list strong {
  display: block;
  font-size: 16.5px;
  color: var(--c-primary);
  margin-bottom: 4px;
}
.value__list strong::before {
  content: "▍";
  color: var(--c-accent);
  margin-right: 6px;
}
.value__list span { font-size: 15px; color: var(--c-text-sub); }

/* ---------- 联系我们 ---------- */
.contact {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 40px;
  align-items: start;
}
.contact__form {
  padding: 34px 32px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.contact__info {
  padding: 32px 28px;
  background: linear-gradient(160deg, #0B3C5D, #14608C);
  border-radius: var(--radius-lg);
  color: #fff;
}
.contact__info-title { font-size: 20px; margin-bottom: 20px; }
.contact__list { display: grid; gap: 18px; font-size: 15px; }
.contact__list dt { font-size: 13px; color: rgba(255, 255, 255, 0.66); margin-bottom: 3px; }
.contact__list dd { color: #fff; line-height: 1.8; }
.contact__time {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.66);
}
.contact__list a:hover { color: var(--c-accent); }
.contact__info .ph {
  margin-top: 26px;
  background-color: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.35);
  color: rgba(255, 255, 255, 0.85);
}
.contact__info .ph__hint { color: rgba(255, 255, 255, 0.6); }

/* ---------- 底部行动条 ---------- */
.cta {
  padding: 56px 0;
  background: linear-gradient(120deg, var(--c-primary) 0%, #12608C 60%, var(--c-primary-dark) 100%);
  color: #fff;
}
.cta__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta__title { font-size: clamp(22px, 2.6vw, 30px); }
.cta__desc { margin-top: 10px; color: rgba(255, 255, 255, 0.82); font-size: 15.5px; }
.cta__actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--c-primary-dark); color: rgba(255, 255, 255, 0.75); font-size: 14.5px; }
.site-footer__inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: 40px;
  padding: 58px 24px 44px;
}
.site-footer__desc { margin-top: 18px; line-height: 1.8; max-width: 34em; color: rgba(255, 255, 255, 0.68); }
.site-footer__title {
  font-size: 16px;
  color: #fff;
  margin-bottom: 18px;
  font-weight: 700;
}
.site-footer__list { display: grid; gap: 11px; }
.site-footer__list a:hover { color: var(--c-accent); }
.site-footer__list--plain li { line-height: 1.7; }

.site-footer__bottom { border-top: 1px solid rgba(255, 255, 255, 0.12); }
.site-footer__bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 20px 24px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
}
.site-footer__legal { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.site-footer__legal a:hover { color: var(--c-accent); }

/* ---------- 入场动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ==========================================================================
   响应式适配
   ========================================================================== */
@media (max-width: 1080px) {
  .hero__inner { grid-template-columns: 1fr; gap: 40px; }
  .hero__visual { order: -1; max-width: 560px; }
  .verify-grid { grid-template-columns: 1fr; }
  .login { grid-template-columns: 1fr; gap: 32px; }
  .login__panel { max-width: 520px; }
  .value { grid-template-columns: 1fr; gap: 32px; }
  .contact { grid-template-columns: 1fr; }
  .site-footer__inner { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 900px) {
  .cards--3 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .step + .step::before { display: none; }
  .certs { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3)::before { display: none; }
}

@media (max-width: 768px) {
  :root { --header-h: 62px; }
  .topbar__inner { justify-content: center; min-height: 34px; }
  .topbar__meta { display: none; }

  .nav-toggle { display: flex; }
  .site-header__actions .btn--sm { display: none; }

  .nav {
    position: absolute;
    top: 100%; left: 0; right: 0;
    margin: 0;
    background: #fff;
    border-bottom: 1px solid var(--c-line);
    box-shadow: 0 12px 24px rgba(11, 60, 93, 0.10);
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s var(--ease);
  }
  .nav.is-open { max-height: 420px; }
  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0;
  }
  .nav__link { padding: 13px 24px; border-radius: 0; font-size: 16px; }
  .nav__link.is-current::after { display: none; }

  .hero { padding: 52px 0 46px; }
  .hero__actions .btn { flex: 1 1 auto; min-width: 160px; }

  .section { padding: 54px 0; }
  .section__head { margin-bottom: 34px; }

  .cards--3 { grid-template-columns: 1fr; }
  .stat + .stat::before { display: none; }

  .verify-card, .value { padding: 26px 20px; }
  .contact__form { padding: 24px 20px; }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  .login__panel { padding: 26px 22px; }

  .cta__inner { flex-direction: column; align-items: flex-start; }
  .cta__actions .btn { flex: 1 1 auto; }

  .site-footer__inner { grid-template-columns: 1fr; padding: 44px 24px 32px; gap: 30px; }
  .site-footer__bottom-inner { flex-direction: column; align-items: flex-start; gap: 8px; }
}

@media (max-width: 480px) {
  .container { padding: 0 18px; }
  .steps, .certs { grid-template-columns: 1fr; }
  .hero__title { font-size: 26px; }
  .hero__points { gap: 8px 18px; font-size: 13.5px; }
}

/* ---------- 返回顶部 ---------- */
.to-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 90;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  padding: 0;
  color: #fff;
  background: var(--c-primary);
  border: none;
  border-radius: 50%;
  box-shadow: 0 6px 18px rgba(11, 60, 93, 0.28);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity .28s var(--ease), transform .28s var(--ease),
              visibility .28s var(--ease), background-color .22s var(--ease),
              box-shadow .22s var(--ease);
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.to-top:hover {
  background: var(--c-accent);
  box-shadow: 0 10px 26px rgba(244, 123, 52, 0.38);
}
.to-top:active { transform: translateY(2px); }
.to-top svg { transition: transform .28s var(--ease); }
.to-top:hover svg { transform: translateY(-2px); }

@media (max-width: 768px) {
  .to-top { right: 16px; bottom: 20px; width: 44px; height: 44px; }
}

/* ---------- 打印 ---------- */
@media print {
  .topbar, .site-header, .cta, .nav-toggle, .to-top, .modal { display: none; }
  .hero { background: #fff !important; color: #000; }
  body { font-size: 12pt; }
}

/* ==========================================================================
   独立页标题区（classes.html）
   ========================================================================== */
.page-hero {
  padding: 56px 0 44px;
  background: linear-gradient(150deg, #0B3C5D 0%, #0E4E76 60%, #14608C 100%);
  color: #fff;
  text-align: center;
}
.page-hero .section__eyebrow { color: var(--c-accent-light, #F9A06A); }
.page-hero__title {
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 800;
  letter-spacing: 0.02em;
}
.page-hero__sub {
  max-width: 640px;
  margin: 14px auto 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.82);
}

/* ==========================================================================
   近期开班模块（#classes）
   布局参考专业培训站：左侧工种分类入口 + 初训/复训选项卡 + 双列紧凑卡片
   卡片信息层级：状态徽章 → 班级名 → 报名人数 → 培训时间 → 开班地点 → CTA
   ========================================================================== */
.class-layout {
  display: grid;
  grid-template-columns: 232px 1fr;
  gap: 28px;
  align-items: start;
}

/* ---------- 左侧：报名入口 / 工种分类 ---------- */
.class-side {
  position: sticky;
  top: 92px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 20px 18px;
  box-shadow: var(--shadow-sm);
}
.class-side__title {
  font-size: 16px;
  font-weight: 700;
  color: var(--c-primary);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--c-line);
}
.class-side__title em {
  display: block;
  margin-top: 2px;
  font-size: 11px;
  font-style: normal;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--c-muted);
  text-transform: uppercase;
}
.class-cats {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 10px;
}
.class-cat {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  width: 100%;
  padding: 9px 12px;
  border: 0;
  border-left: 3px solid transparent;
  border-radius: 0 var(--radius) var(--radius) 0;
  background: none;
  font-size: 14px;
  color: var(--c-text-sub);
  text-align: left;
  cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease);
}
.class-cat:hover { background: var(--c-tint); color: var(--c-primary); }
.class-cat.is-active {
  background: rgba(244, 123, 52, 0.1);
  border-left-color: var(--c-accent);
  color: var(--c-accent-dark);
  font-weight: 600;
}
.class-cat__count {
  flex: none;
  min-width: 22px;
  padding: 1px 7px;
  border-radius: 999px;
  background: var(--c-tint-2);
  font-size: 12px;
  font-weight: 600;
  color: var(--c-muted);
  text-align: center;
}
.class-cat.is-active .class-cat__count {
  background: rgba(244, 123, 52, 0.18);
  color: var(--c-accent-dark);
}

/* ---------- 两级科目分类：一级类别分组 + 二级科目 ---------- */
.class-cat-group + .class-cat-group { margin-top: 10px; }
.class-cat--parent {
  font-weight: 600;
  color: var(--c-text);
}
.class-cat--child {
  padding-left: 22px;
  font-size: 13.5px;
}
.class-cat--child::before {
  content: '';
  flex: none;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--c-line);
}
.class-cat--child:hover::before,
.class-cat--child.is-active::before { background: var(--c-accent); }

/* ---------- 右侧：选项卡 + 卡片网格 ---------- */
.class-tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--c-line);
  margin-bottom: 20px;
}
.class-tab {
  position: relative;
  padding: 10px 18px;
  border: 0;
  background: none;
  font-size: 15px;
  font-weight: 600;
  color: var(--c-text-sub);
  cursor: pointer;
  transition: color .2s var(--ease);
}
.class-tab::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: -1px;
  height: 2px;
  border-radius: 2px;
  background: transparent;
  transition: background .2s var(--ease);
}
.class-tab:hover { color: var(--c-primary); }
.class-tab.is-active { color: var(--c-accent-dark); }
.class-tab.is-active::after { background: var(--c-accent); }

.class-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  align-items: stretch;
}
.classes__more {
  margin-top: 28px;
  text-align: center;
  font-size: 14px;
  color: var(--c-text-sub);
}

.class-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 18px 20px 20px;
  box-shadow: var(--shadow-sm);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.class-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.class-card.is-full { opacity: .92; }

.class-card__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 24px;
  margin-bottom: 10px;
}
.badge {
  font-size: 12px;
  font-weight: 600;
  line-height: 20px;
  padding: 2px 10px;
  border-radius: 999px;
  white-space: nowrap;
}
.badge.is-open { color: #1E8E5A; background: rgba(30, 142, 90, 0.1); }
.badge.is-tight { color: var(--c-accent-dark); background: rgba(244, 123, 52, 0.13); }
.badge.is-full { color: var(--c-muted); background: var(--c-tint-2); }
.badge.is-started { color: var(--c-primary-light); background: rgba(21, 86, 127, 0.09); }

.class-card__name {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--c-text);
}
.class-card__trade {
  margin-top: 3px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-primary);
}
.class-card__cat {
  font-weight: 400;
  color: var(--c-muted);
}

.class-card__rows {
  margin-top: 12px;
  display: grid;
  gap: 8px;
  font-size: 13.5px;
}
.class-card__row {
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.class-card__row dt {
  flex: none;
  width: 64px;
  color: var(--c-muted);
}
.class-card__row dd { color: var(--c-text-sub); }
.class-card__row dd b { color: var(--c-text); font-weight: 600; }
.class-card__num b { color: var(--c-accent-dark); }
.class-card.is-full .class-card__num b { color: var(--c-muted); }

.class-card__remark {
  margin-top: 10px;
  font-size: 13px;
  color: var(--c-text-sub);
  line-height: 1.6;
}
.class-card .btn { margin-top: auto; } /* 弹性布局把 CTA 压到卡片底部，等高卡片更整齐 */
.class-card__seats-spacer { margin-bottom: 18px; } /* 无备注时保证按钮与卡片内容的最小间距 */
.class-card .btn:not(:disabled) { padding-top: 11px; padding-bottom: 11px; }
.class-card__btn[disabled] {
  background: var(--c-tint-2);
  color: var(--c-muted);
  cursor: not-allowed;
}

/* 空态 / 失败态 */
.classes__state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 56px 24px;
  background: #fff;
  border: 1px dashed var(--c-line);
  border-radius: var(--radius-lg);
  color: var(--c-text-sub);
  font-size: 14px;
}
.classes__state-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--c-text);
  margin-bottom: 8px;
}

/* 骨架屏 */
.sk {
  position: relative;
  overflow: hidden;
  background: var(--c-tint-2);
  border-radius: 6px;
}
.sk::after {
  content: '';
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.65), transparent);
  animation: sk-shimmer 1.4s infinite;
}
@keyframes sk-shimmer {
  to { transform: translateX(100%); }
}
.sk-card { pointer-events: none; }

/* ==========================================================================
   报名弹窗
   ========================================================================== */
.modal {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal[hidden] { display: none; } /* 覆盖 .modal 的 display:flex，让 hidden 属性生效 */
.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(11, 60, 93, 0.45);
}
.modal__panel {
  position: relative;
  width: 100%;
  max-width: 460px;
  max-height: calc(100vh - 40px);
  overflow: auto;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-lg);
}
.modal__close {
  position: absolute;
  top: 12px;
  right: 14px;
  border: 0;
  background: none;
  font-size: 24px;
  line-height: 1;
  color: var(--c-muted);
  cursor: pointer;
  padding: 4px;
}
.modal__close:hover { color: var(--c-text); }
.modal__title { font-size: 20px; }
.modal__subtitle {
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--c-text-sub);
  line-height: 1.6;
}
.modal__panel .field { margin-top: 16px; }
.modal__panel .field input[type="file"] { padding: 9px 12px; }
.field__hint {
  margin-top: 6px;
  font-size: 12.5px;
  color: var(--c-muted);
  line-height: 1.6;
}
.form-note--privacy {
  margin-top: 16px;
  font-size: 12.5px;
  color: var(--c-muted);
  line-height: 1.7;
}
.modal__success { text-align: center; padding: 12px 0; }
.modal__success-title {
  font-size: 18px;
  font-weight: 700;
  color: #1E8E5A;
}
.modal__success-code { margin-top: 12px; font-size: 15px; }
.modal__success-code strong {
  color: var(--c-primary);
  letter-spacing: 0.06em;
  font-size: 17px;
}
.modal__success-note {
  margin: 12px 0 24px;
  font-size: 13.5px;
  color: var(--c-text-sub);
  line-height: 1.7;
}
body.modal-open { overflow: hidden; }

.btn--outline {
  background: #fff;
  color: var(--c-primary);
  border: 1.5px solid var(--c-primary);
}
.btn--outline:hover { background: var(--c-tint); }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .class-layout { grid-template-columns: 200px 1fr; gap: 20px; }
}
@media (max-width: 860px) {
  .class-layout { grid-template-columns: 1fr; }
  .class-side {
    position: static;
    min-width: 0; /* grid item 默认 min-width:auto 会被芯片内容撑破轨道，必须显式约束 */
    padding: 14px 16px;
  }
  .class-side__title { padding-bottom: 10px; }
  .class-side__title em { display: none; }
  /* 侧栏在窄屏改为横向可滑芯片条，保持参考站「左侧分类」的信息架构 */
  .class-cats {
    flex-direction: row;
    overflow-x: auto;
    gap: 8px;
    margin-top: 12px;
    padding-bottom: 4px;
    scrollbar-width: thin;
  }
  .class-cat {
    width: auto;
    flex: none;
    border: 1px solid var(--c-line);
    border-left-width: 1px;
    border-radius: 999px;
    padding: 7px 14px;
    white-space: nowrap;
  }
  .class-cat.is-active { border-color: var(--c-accent); }
  /* 窄屏芯片模式：分组盒子消失，一级/二级按钮按 DOM 顺序进同一条芯片流
     （一级 二级 二级 | 一级 二级…），一级靠加粗+浅底色保持层级 */
  .class-cat-group { display: contents; }
  .class-cat-group + .class-cat-group { margin-top: 0; }
  .class-cat--parent { background: var(--c-tint-2); }
}
@media (max-width: 640px) {
  .class-grid { grid-template-columns: 1fr; }
  .class-tab { padding: 10px 12px; font-size: 14px; }
  .modal__panel { padding: 24px 20px; }
  .class-card { padding: 16px; }
}