/* ============================================================
   艾德英语官网 · 主样式
   设计基调：雅思红 #C8102E + 深枣红 + 炭灰，专业、醒目、信息优先
   ============================================================ */

:root {
  --ink: #222222;
  --ink-2: #333333;
  --muted: #666666;
  --muted-2: #666666;
  --line: #e8e8e8;
  --line-2: #F5F5F5;
  --bg: #ffffff;
  --bg-alt: #F5F5F5;
  --bg-deep: #5c0a16;

  --primary: #C8102E;
  --primary-2: #a90d27;
  --primary-3: #d92b43;
  --primary-soft: #f9e6e9;

  /* 文档 1.4：品牌色仅雅思红 #C8102E，中性色走 #222/#333/#666/#F5F5F5 */
  --accent: #C8102E;
  --accent-2: #C8102E;
  --accent-soft: #F5F5F5;

  --radius: 14px;
  --radius-sm: 9px;
  --radius-lg: 22px;

  --shadow-sm: 0 1px 2px rgba(36,31,30,0.05), 0 3px 10px rgba(36,31,30,0.04);
  --shadow: 0 2px 6px rgba(36,31,30,0.06), 0 12px 30px rgba(36,31,30,0.07);
  --shadow-lg: 0 4px 12px rgba(36,31,30,0.08), 0 24px 56px rgba(36,31,30,0.1);

  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", "Segoe UI", Roboto, sans-serif;
  --font-en: "Segoe UI", -apple-system, BlinkMacSystemFont, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--primary-2);
  text-decoration: none;
}

a:hover {
  color: var(--primary-3);
}

h1,
h2,
h3,
h4 {
  color: var(--ink);
  line-height: 1.32;
  margin: 0 0 0.6em;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(1.75rem, 1.2rem + 2.2vw, 2.75rem);
}

h2 {
  font-size: clamp(1.35rem, 1.05rem + 1.1vw, 1.85rem);
}

h3 {
  font-size: 1.115rem;
}

p {
  margin: 0 0 1em;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

.ico {
  width: 1.15em;
  height: 1.15em;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: none;
}

.wrap {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

.wrap.narrow {
  max-width: 840px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--primary);
  color: #fff;
  padding: 10px 18px;
  z-index: 200;
  border-radius: 0 0 8px 0;
}

.skip-link:focus {
  left: 0;
  color: #fff;
}

/* ---------------------------- 按钮 ---------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.2;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  color: #fff;
  box-shadow: 0 6px 18px rgba(200,16,46,0.24);
}

.btn-primary:hover {
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(200,16,46,0.3);
}

.btn-ghost {
  background: rgba(255,255,255,0.14);
  border-color: rgba(255,255,255,0.4);
  color: #fff;
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.24);
  color: #fff;
}

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

.btn-outline:hover {
  border-color: var(--primary-3);
  color: var(--primary-2);
}

.btn-ghost-dark {
  border-color: rgba(255,255,255,0.45);
  color: #fff;
}

.btn-ghost-dark:hover {
  background: rgba(255,255,255,0.16);
  color: #fff;
}

.btn-block {
  display: flex;
  width: 100%;
}

/* ---------------------------- 头部 ---------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line-2);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 74px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: none;
}

.brand-logo {
  width: 46px;
  height: 46px;
  border-radius: 12px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.brand-text strong {
  font-size: 1.14rem;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.brand-text em {
  font-size: 0.735rem;
  font-style: normal;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-list a {
  display: block;
  padding: 8px 11px;
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--ink-2);
  font-weight: 500;
  transition: all 0.16s ease;
  white-space: nowrap;
}

.nav-list a:hover {
  background: var(--primary-soft);
  color: var(--primary);
}

.nav-list a.is-active {
  color: var(--primary);
  font-weight: 700;
  background: var(--primary-soft);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-cta {
  padding: 10px 20px;
  font-size: 0.88rem;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------------------------- 首屏 ---------------------------- */

.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(150deg, #5c0a16 0%, #a11228 52%, #C8102E 100%);
  color: #fff;
  padding: 74px 0 84px;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.09) 1px, transparent 1px);
  background-size: 26px 26px;
  opacity: 0.6;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 52px;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 16px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,0.13);
  border: 1px solid rgba(255,255,255,0.22);
  font-size: 0.79rem;
  letter-spacing: 0.1em;
  color: #f9e6e9;
}

.hero h1 {
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 0.01em;
}

.hero-desc {
  font-size: 1.02rem;
  color: rgba(255,255,255,0.86);
  margin-bottom: 22px;
  max-width: 34em;
}

.hero-points {
  list-style: none;
  display: grid;
  gap: 9px;
  margin-bottom: 30px;
}

.hero-points li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.94rem;
  color: rgba(255,255,255,0.92);
}

.hero-points .ico {
  margin-top: 4px;
  color: var(--accent-2);
  stroke-width: 2.2;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-media {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(58,12,22,0.45);
  border: 1px solid rgba(255,255,255,0.16);
}

.hero-media img {
  width: 100%;
  display: block;
}

/* ---------------------------- 数据条 ---------------------------- */

.stats-bar {
  background: #fff;
  border-bottom: 1px solid var(--line-2);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  padding: 0;
}

.stat {
  padding: 28px 22px;
  text-align: center;
  border-right: 1px solid var(--line-2);
}

.stat:last-child {
  border-right: none;
}

.stat strong {
  display: block;
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.02em;
  font-family: var(--font-en);
}

.stat span {
  font-size: 0.85rem;
  color: var(--muted);
}

/* ---------------------------- 区块 ---------------------------- */

.section {
  padding: 72px 0;
}

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

.section-head {
  max-width: 760px;
  margin: 0 auto 40px;
  text-align: center;
}

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

.section-head p {
  color: var(--muted);
  margin: 0;
  font-size: 0.98rem;
}

.section-more {
  margin-top: 34px;
  text-align: center;
}

.note {
  margin-top: 28px;
  padding: 14px 18px;
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.85rem;
  color: #666666;
  line-height: 1.7;
}

.lead {
  font-size: 1.1rem;
  line-height: 1.9;
  color: var(--ink-2);
}

.empty {
  text-align: center;
  padding: 60px 0;
  color: var(--muted);
}

/* ---------------------------- 卡片与网格 ---------------------------- */

.grid {
  display: grid;
  gap: 22px;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

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

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

.card {
  display: block;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

a.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: #f6d7dd;
}

.card p:last-child {
  margin-bottom: 0;
}

.card-ico {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--primary-soft);
  color: var(--primary);
  margin-bottom: 16px;
}

.card-ico .ico {
  width: 23px;
  height: 23px;
}

.card h3 {
  margin-bottom: 0.45em;
}

.card p {
  font-size: 0.92rem;
  color: var(--muted);
  margin-bottom: 0;
}

.feature:hover .card-ico {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  color: #fff;
}

.card-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--primary-2);
}

.card-more .ico {
  width: 1em;
  height: 1em;
  transition: transform 0.2s ease;
}

a.card:hover .card-more .ico {
  transform: translateX(4px);
}

/* 课程卡片 */
.course-card {
  position: relative;
  padding-top: 34px;
}

.course-tag {
  position: absolute;
  top: 18px;
  right: 18px;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: #666666;
  font-size: 0.72rem;
  font-weight: 600;
}

.course-en {
  font-family: var(--font-en);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--muted-2);
  text-transform: uppercase;
  margin-top: -0.4em;
}

/* 师资卡片 */
.teacher-card {
  text-align: left;
}

.teacher-avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  border: 3px solid #fff;
  box-shadow: 0 0 0 1px var(--line), var(--shadow-sm);
  margin-bottom: 16px;
}

.teacher-card-lg .teacher-avatar {
  width: 104px;
  height: 104px;
}

.teacher-card h3 {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 0.2em;
}

.teacher-card h3 em {
  font-style: normal;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--muted-2);
  font-family: var(--font-en);
  letter-spacing: 0.06em;
}

.teacher-role {
  display: inline-block;
  margin: 0 0 6px;
  padding: 3px 11px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary-2);
  font-size: 0.79rem;
  font-weight: 600;
}

.teacher-years {
  font-size: 0.84rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 0.7em;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  list-style: none;
  margin-top: 14px;
}

.tag-list li {
  padding: 3px 11px;
  border-radius: 999px;
  background: var(--bg-alt);
  border: 1px solid var(--line-2);
  font-size: 0.75rem;
  color: var(--muted);
}

.tag-list-lg li {
  font-size: 0.82rem;
  padding: 5px 14px;
}

/* ---------------------------- 页面头 ---------------------------- */

.pagehero {
  padding: 46px 0 44px;
  background: linear-gradient(180deg, #F5F5F5 0%, #ffffff 100%);
  border-bottom: 1px solid var(--line-2);
}

.crumbs {
  margin-bottom: 18px;
}

.crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  font-size: 0.82rem;
  color: var(--muted-2);
}

.crumbs li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.crumbs li + li::before {
  content: "/";
  color: #d6d6d6;
}

.crumbs a {
  color: var(--muted);
}

.crumbs a:hover {
  color: var(--primary-2);
}

.pagehero h1 {
  margin-bottom: 12px;
}

.pagehero-sub {
  display: inline-block;
  margin: 0 0 12px;
  padding: 5px 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: #666666;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.pagehero-intro {
  max-width: 62em;
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

/* ---------------------------- 文章 ---------------------------- */

.article-card {
  padding: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.article-cover {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: var(--bg-alt);
}

.article-body {
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.article-cat {
  display: inline-block;
  align-self: flex-start;
  margin-bottom: 10px;
  padding: 3px 11px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary-2);
  font-size: 0.73rem;
  font-weight: 600;
}

.article-cat-lg {
  font-size: 0.79rem;
  margin-bottom: 12px;
}

.article-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.5em;
}

.article-card p {
  flex: 1;
}

.article-card time {
  margin-top: 14px;
  font-size: 0.79rem;
  color: var(--muted-2);
  font-family: var(--font-en);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-bottom: 32px;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 15px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  font-size: 0.86rem;
  color: var(--muted);
  transition: all 0.16s ease;
}

.filter-chip:hover,
.filter-chip.is-active {
  border-color: var(--primary-2);
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 600;
}

.filter-chip span {
  font-size: 0.74rem;
  color: var(--muted-2);
}

/* 文章详情 */
.pagehero-article h1 {
  max-width: 22em;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin: 0 0 16px;
  font-size: 0.85rem;
  color: var(--muted-2);
}

.article-meta .sep {
  color: #e0e0e0;
}

.article-summary {
  max-width: 54em;
  margin: 0;
  font-size: 1rem;
  color: var(--muted);
  padding-left: 16px;
  border-left: 3px solid var(--accent);
}

.article-hero-img {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

.article-hero-img img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  margin-top: -22px;
  box-shadow: var(--shadow);
}

.article-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 52px;
  align-items: start;
}

.prose {
  font-size: 1.02rem;
  line-height: 2;
  color: var(--ink-2);
}

.prose h2 {
  font-size: 1.32rem;
  margin: 2.2em 0 0.7em;
  padding-left: 14px;
  border-left: 4px solid var(--primary-2);
  line-height: 1.4;
}

.prose h2:first-child {
  margin-top: 0;
}

.prose p {
  margin-bottom: 1.15em;
}

.prose h3 {
  font-size: 1.12rem;
  margin: 1.8em 0 0.6em;
  line-height: 1.5;
  color: var(--ink);
}

.prose ul,
.prose ol {
  margin: 0 0 1.15em;
  padding-left: 1.5em;
}

.prose li {
  margin-bottom: 0.5em;
}

.prose blockquote {
  margin: 1.6em 0;
  padding: 14px 20px;
  border-left: 3px solid var(--primary-2);
  background: var(--bg-alt);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--ink-2);
}

.prose blockquote p:last-child {
  margin-bottom: 0;
}

.prose hr {
  height: 1px;
  border: 0;
  background: var(--line);
  margin: 2.4em 0;
}

.prose a {
  color: var(--primary-2);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 正文配图：后台「插入图片」写的就是 .prose-fig 结构 */
.prose img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  display: block;
}

.prose figure,
.prose .prose-fig {
  margin: 1.8em 0;
}

.prose figure img,
.prose .prose-fig img {
  width: 100%;
}

.prose figcaption {
  margin-top: 9px;
  font-size: 0.84rem;
  color: var(--muted);
  text-align: center;
  line-height: 1.6;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.6em 0;
  font-size: 0.93rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.prose th,
.prose td {
  padding: 12px 15px;
  text-align: left;
  border-bottom: 1px solid var(--line-2);
}

.prose th {
  background: var(--bg-alt);
  font-weight: 700;
  color: var(--ink);
}

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

.prose .note {
  font-size: 0.87rem;
}

.article-side {
  position: sticky;
  top: 96px;
  display: grid;
  gap: 20px;
}

.side-block {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}

.side-block h2 {
  font-size: 1rem;
  margin-bottom: 0.8em;
}

.side-links {
  list-style: none;
  display: grid;
  gap: 14px;
}

.side-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink-2);
  display: block;
  line-height: 1.5;
}

.side-links a:hover {
  color: var(--primary-2);
}

.side-links time {
  font-size: 0.76rem;
  color: var(--muted-2);
  font-family: var(--font-en);
}

.side-contact {
  background: linear-gradient(160deg, #C8102E, #a90d27);
  border-color: transparent;
  color: #fff;
}

.side-contact h2 {
  color: #fff;
}

.side-contact p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.85);
}

.side-contact .btn-primary {
  background: #fff;
  color: var(--primary);
  box-shadow: none;
}

/* ---------------------------- 课程页 ---------------------------- */

.course-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.course-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.course-item:hover {
  box-shadow: var(--shadow);
  border-color: #f6d7dd;
}

.course-head {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 16px;
}

.course-ico {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-3) 100%);
  color: #fff;
  flex: none;
}

.course-ico .ico {
  width: 26px;
  height: 26px;
}

.course-title h2 {
  font-size: 1.18rem;
  margin: 0 0 4px;
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
}

.course-title h2 em {
  font-style: normal;
  font-size: 0.76rem;
  font-weight: 500;
  color: var(--muted-2);
  letter-spacing: 0.07em;
  font-family: var(--font-en);
}

.course-title .course-tag {
  position: static;
  display: inline-block;
}

.course-desc {
  font-size: 0.93rem;
  color: var(--muted);
}

.point-list {
  list-style: none;
  display: grid;
  gap: 9px;
  margin: 18px 0 0;
}

.point-list li {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  font-size: 0.9rem;
  color: var(--ink-2);
}

.point-list .ico {
  margin-top: 4px;
  color: var(--primary-3);
  stroke-width: 2.3;
}

.point-list-sm li {
  font-size: 0.87rem;
}

.course-audience {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: 0.87rem;
  color: var(--muted);
}

.course-audience strong {
  color: var(--ink);
}

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

.teem-card strong {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 12px;
  font-family: var(--font-en);
}

.teem-card h3 {
  font-size: 1rem;
}

/* ---------------------------- FAQ ---------------------------- */

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.faq-item[open] {
  border-color: #f6d7dd;
  box-shadow: var(--shadow-sm);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  cursor: pointer;
  font-weight: 600;
  color: var(--ink);
  font-size: 0.99rem;
  list-style: none;
  transition: background 0.16s ease;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary:hover {
  background: var(--bg-alt);
}

.faq-arrow {
  width: 18px;
  height: 18px;
  color: var(--primary-2);
  transform: rotate(90deg);
  transition: transform 0.24s ease;
}

.faq-item[open] .faq-arrow {
  transform: rotate(-90deg);
}

.faq-answer {
  padding: 0 22px 20px;
}

.faq-answer p {
  margin: 0;
  font-size: 0.94rem;
  color: var(--muted);
  line-height: 1.85;
}

.faq-group + .faq-group {
  margin-top: 40px;
}

.faq-group h2 {
  font-size: 1.15rem;
  margin-bottom: 18px;
  padding-left: 12px;
  border-left: 4px solid var(--accent);
}

/* ---------------------------- 时间线 ---------------------------- */

.timeline {
  list-style: none;
  position: relative;
  padding-left: 30px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--primary-3), var(--line));
}

.timeline li {
  position: relative;
  padding-bottom: 26px;
}

.timeline li:last-child {
  padding-bottom: 0;
}

.timeline li::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--primary-3);
}

.timeline-year {
  display: inline-block;
  margin-bottom: 4px;
  font-weight: 800;
  color: var(--primary);
  font-family: var(--font-en);
  letter-spacing: 0.02em;
}

.timeline p {
  margin: 0;
  font-size: 0.96rem;
  color: var(--muted);
}

/* ---------------------------- 荣誉 / 活动 / 资质 ---------------------------- */

.honor-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.honor-head .card-ico {
  margin-bottom: 0;
}

.honor-year {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--muted-2);
  font-family: var(--font-en);
  letter-spacing: 0.04em;
}

.activity-card {
  padding: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.activity-img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: var(--bg-alt);
}

.activity-body {
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.activity-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 12px !important;
  font-size: 0.79rem;
  color: var(--muted-2) !important;
}

.activity-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.activity-meta span::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

.cert-card {
  padding: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.cert-thumb {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  border: none;
  background: var(--bg-alt);
  cursor: zoom-in;
}

.cert-thumb img {
  width: 100%;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.cert-zoom {
  position: absolute;
  inset: auto 0 0 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px;
  background: rgba(113,12,27,0.82);
  color: #fff;
  font-size: 0.8rem;
  transform: translateY(100%);
  transition: transform 0.22s ease;
}

.cert-thumb:hover .cert-zoom,
.cert-thumb:focus-visible .cert-zoom {
  transform: translateY(0);
}

.cert-card figcaption {
  padding: 20px 22px 22px;
}

.cert-card h3 {
  font-size: 1.02rem;
  margin-bottom: 0.3em;
}

.cert-sub {
  font-size: 0.79rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 0.7em;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 40px 24px;
  background: rgba(40,8,14,0.9);
  backdrop-filter: blur(6px);
}

.lightbox[hidden] {
  display: none;
}

.lightbox img {
  max-width: min(92vw, 900px);
  max-height: 76vh;
  border-radius: 10px;
  background: #fff;
  box-shadow: var(--shadow-lg);
}

.lightbox p {
  margin: 0;
  color: rgba(255,255,255,0.88);
  font-size: 0.92rem;
}

.lightbox-close {
  position: absolute;
  top: 22px;
  right: 26px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.1);
  color: #fff;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
}

.lightbox-close:hover {
  background: rgba(255,255,255,0.2);
}

/* ---------------------------- 联系页 ---------------------------- */

.contact-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.85fr);
  gap: 40px;
  align-items: start;
}

.contact-list {
  list-style: none;
  display: grid;
  gap: 6px;
}

.contact-list li {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-2);
}

.contact-list li:last-child {
  border-bottom: none;
}

.contact-ico {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--primary-soft);
  color: var(--primary);
  flex: none;
}

.contact-ico .ico {
  width: 20px;
  height: 20px;
}

.contact-list strong {
  display: block;
  font-size: 0.83rem;
  color: var(--muted-2);
  font-weight: 600;
  letter-spacing: 0.03em;
  margin-bottom: 3px;
}

.contact-list p {
  margin: 0;
  font-size: 1.02rem;
  color: var(--ink);
  font-weight: 500;
}

.contact-side {
  display: grid;
  gap: 20px;
}

.contact-card h2 {
  font-size: 1.05rem;
}

.contact-card p {
  font-size: 0.9rem;
  color: var(--muted);
}

.map-embed {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
}

.map-embed iframe {
  display: block;
  width: 100%;
  height: 400px;
  border: 0;
}

.map-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 260px;
  padding: 40px;
  text-align: center;
  background: repeating-linear-gradient(45deg, #fafafb, #fafafb 12px, #F5F5F5 12px, #F5F5F5 24px);
  color: var(--muted);
}

.map-placeholder .ico {
  width: 34px;
  height: 34px;
  color: var(--primary-3);
}

.map-placeholder p {
  margin: 0;
  font-size: 0.9rem;
}

/* ---------------------------- CTA ---------------------------- */

.cta {
  /* 文档 1.4：禁止大面积红色铺满页面背景 → 转化区走浅底 #F5F5F5，红只留给按钮 */
  background: var(--bg-alt);
  color: var(--ink-2);
  padding: 56px 0 60px;
  border-top: 1px solid var(--line);
}

.cta-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 420px);
  align-items: start;
  gap: 40px;
}

.cta-copy h2 {
  color: var(--ink);
  margin-bottom: 0.4em;
}

.cta-copy p {
  margin: 0 0 14px;
  max-width: 44em;
  color: var(--muted);
  font-size: 0.96rem;
}

.cta-nap {
  font-size: 0.88rem !important;
  color: var(--ink-2) !important;
  line-height: 1.9;
}

.cta-points {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.cta-points li {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  color: var(--ink-2);
  font-size: 0.92rem;
}

.cta-points .ico {
  color: var(--primary);
  flex: none;
  margin-top: 4px;
}

/* 预约表单（转化组件，文档十：预约表单） */
.book-form {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 22px 20px;
  box-shadow: var(--shadow-sm);
}

.book-form h3 {
  margin: 0 0 14px;
  font-size: 1.06rem;
  color: var(--ink);
}

.bf-field {
  margin-bottom: 12px;
}

.bf-field label {
  display: block;
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 5px;
}

.bf-field input,
.bf-field select {
  width: 100%;
  padding: 11px 12px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--ink-2);
  background: #fff;
  border: 1px solid #dcdcdc;
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.bf-field input:focus,
.bf-field select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(200,16,46,0.12);
}

.book-form .btn {
  width: 100%;
  margin-top: 6px;
}

.bf-tip {
  margin: 10px 0 0;
  font-size: 0.78rem;
  color: var(--muted);
  line-height: 1.7;
}

.bf-msg {
  margin: 10px 0 0;
  font-size: 0.86rem;
  line-height: 1.7;
  display: none;
}

.bf-msg.is-ok {
  display: block;
  color: #1a7f3c;
}

.bf-msg.is-err {
  display: block;
  color: var(--primary);
}

.cta-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  margin-top: 18px;
}

@media (max-width: 900px) {
  .cta-inner {
    grid-template-columns: 1fr;
    gap: 26px;
  }
}

/* ---------------------------- 页脚 ---------------------------- */

.site-footer {
  background: #333333;
  color: rgba(255,255,255,0.72);
  padding: 62px 0 26px;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.25fr 1.15fr;
  gap: 40px;
  padding-bottom: 40px;
}

.site-footer h3 {
  color: #fff;
  font-size: 0.94rem;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 16px;
}

.footer-brand strong {
  color: #fff;
  font-size: 1.08rem;
}

.footer-brand img {
  border-radius: 10px;
}

.footer-desc {
  font-size: 0.86rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.6);
  margin-bottom: 12px;
}

.footer-slogan {
  font-size: 0.82rem;
  /* 页脚是深底，必须用浅色，不能吃 --accent-2（会被当成背景同色） */
  color: rgba(255,255,255,0.66);
  letter-spacing: 0.04em;
  margin: 0;
}

.footer-links,
.footer-contact {
  list-style: none;
  display: grid;
  gap: 10px;
}

.footer-links a,
.footer-contact a {
  color: rgba(255,255,255,0.72);
}

.footer-links a:hover,
.footer-contact a:hover {
  color: #fff;
}

.footer-contact li {
  display: flex;
  gap: 10px;
  line-height: 1.65;
  font-size: 0.86rem;
}

.fc-label {
  flex: none;
  color: rgba(255,255,255,0.42);
  min-width: 4.2em;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
}

.footer-bottom p {
  margin: 0;
}

.footer-bottom a {
  color: rgba(255,255,255,0.62);
}

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

.footer-meta .sep {
  margin: 0 6px;
  color: rgba(255,255,255,0.3);
}

/* 公安联网备案：图标 + 编号，点击核验 */
.footer-meta a.footer-police {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  vertical-align: middle;
}

.footer-meta a.footer-police img {
  display: block;
  width: 18px;
  height: 18px;
  opacity: 1;
  filter: brightness(1.12);
}

.footer-meta a.footer-police:hover img {
  opacity: 1;
}

.footer-note {
  width: 100%;
  color: rgba(255,255,255,0.38);
}

.to-top {
  position: fixed;
  right: 22px;
  bottom: 26px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: none;
  background: var(--primary);
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
  box-shadow: var(--shadow);
  z-index: 50;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.to-top:hover {
  background: var(--primary-2);
  transform: translateY(-2px);
}

/* ---------------------------- 404 ---------------------------- */

.notfound {
  padding: 100px 0 120px;
  text-align: center;
}

.notfound-code {
  font-size: 4.4rem;
  font-weight: 800;
  color: var(--primary-soft);
  line-height: 1;
  margin: 0 0 10px;
  font-family: var(--font-en);
  letter-spacing: 0.04em;
}

.notfound .hero-actions {
  justify-content: center;
  margin: 26px 0 34px;
}

.notfound-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 18px;
  font-size: 0.89rem;
}

/* ---------------------------- 响应式 ---------------------------- */

@media (max-width: 1080px) {
  .nav-list a {
    padding: 8px 8px;
    font-size: 0.86rem;
  }
  .hero-inner {
    gap: 36px;
  }
  .article-wrap {
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 36px;
  }
}

@media (max-width: 960px) {
  .header-inner {
    min-height: 66px;
  }
  .nav-toggle {
    display: flex;
  }
  .site-nav {
    position: fixed;
    top: 66px;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 18px 24px 40px;
    background: #fff;
    border-top: 1px solid var(--line-2);
    overflow-y: auto;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  }
  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }
  .nav-list a {
    padding: 14px 14px;
    font-size: 1rem;
    border-radius: 10px;
  }
  .nav-cta {
    margin-top: 18px;
    padding: 14px;
    font-size: 1rem;
  }

  .hero {
    padding: 48px 0 62px;
  }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 34px;
  }
  .hero-media {
    order: -1;
  }
  .hero h1 {
    font-size: 1.85rem;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat:nth-child(2n) {
    border-right: none;
  }
  .stat:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line-2);
  }

  .section {
    padding: 54px 0;
  }

  .grid-3,
  .grid-4,
  .course-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .article-wrap {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .article-side {
    position: static;
  }

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

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

@media (max-width: 680px) {
  body {
    font-size: 15.5px;
  }
  .wrap {
    padding: 0 18px;
  }

  .grid-3,
  .grid-4,
  .course-list {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat {
    padding: 22px 12px;
  }
  .stat strong {
    font-size: 1.4rem;
  }
  .stat span {
    font-size: 0.78rem;
  }

  .hero {
    padding: 38px 0 50px;
  }
  .hero h1 {
    font-size: 1.58rem;
  }
  .hero-desc {
    font-size: 0.95rem;
  }
  .hero-actions .btn {
    flex: 1;
    min-width: 0;
  }

  .section {
    padding: 44px 0;
  }
  .section-head {
    margin-bottom: 28px;
  }

  .card {
    padding: 22px;
  }
  .course-item {
    padding: 22px;
  }

  .article-hero-img {
    padding: 0 18px;
  }
  .article-hero-img img {
    aspect-ratio: 16 / 9;
  }

  .faq-item summary {
    padding: 16px 18px;
    font-size: 0.95rem;
  }
  .faq-answer {
    padding: 0 18px 18px;
  }

  .prose {
    font-size: 0.98rem;
    line-height: 1.9;
  }
  .prose h2 {
    font-size: 1.16rem;
  }
  .prose table {
    font-size: 0.86rem;
  }
  .prose th,
  .prose td {
    padding: 10px 11px;
  }

  .cta {
    padding: 46px 0;
  }
  .cta-inner {
    gap: 22px;
  }
  .cta-actions .btn {
    flex: 1;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .site-footer {
    padding: 46px 0 22px;
  }

  .to-top {
    right: 14px;
    bottom: 16px;
    width: 42px;
    height: 42px;
  }

  .pagehero {
    padding: 34px 0 32px;
  }
  .notfound {
    padding: 70px 0 80px;
  }
  .notfound-code {
    font-size: 3.2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  /* ⚠️ 必须排除 3D 环形轮播（.ms-ring）：这条规则把时长压到 0.01ms，
     对无限循环的环来说等于让它以"发动机"速度疯转 —— 照片根本看不清。
     环的时长由 JS 写到 --ms-period，见 v4.css 里的覆盖。 */
  *:not(.ms-ring) {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media print {
  .site-header,
  .site-nav,
  .cta,
  .to-top,
  .article-side {
    display: none !important;
  }
}