:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --text: #10213a;
  --muted: #5e6f86;
  --line: #dbe4f0;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary: #eff6ff;
  --green: #16a34a;
  --shadow: 0 12px 36px rgba(16, 33, 58, 0.08);
  --radius: 22px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

img,
video {
  max-width: 100%;
  display: block;
}

button,
input,
textarea {
  font: inherit;
}

.container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.narrow {
  width: min(860px, 100%);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(219, 228, 240, 0.9);
}

.header-inner {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand-logo {
  width: 78px;
  height: 78px;
  object-fit: contain;
}

.brand-title {
  height: 48px;
  width: auto;
  object-fit: contain;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  padding: 12px 16px;
  border-radius: 999px;
  color: var(--muted);
  font-weight: 600;
  transition: 0.2s ease;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--primary);
  background: var(--secondary);
}

.header-phone {
  white-space: nowrap;
  color: var(--primary);
  font-weight: 700;
}

.original-header {
  position: relative;
  background: #fff;
  backdrop-filter: none;
}

.original-header-inner {
  min-height: 106px;
}

.original-nav {
  gap: 18px;
}

.original-nav .nav-link {
  padding: 10px 0;
  border-radius: 0;
  background: transparent;
  color: #6b7280;
  font-size: 1.08rem;
  font-weight: 600;
}

.original-nav .nav-link:hover,
.original-nav .nav-link.is-active {
  background: transparent;
  color: #2563eb;
}

.original-phone {
  font-size: 1.1rem;
}

.hero,
.page-hero {
  padding: 56px 0 28px;
}

.hero-grid,
.detail-hero,
.feature-grid,
.contact-grid,
.two-col {
  display: grid;
  gap: 28px;
}

.hero-grid,
.detail-hero {
  grid-template-columns: 1.08fr 0.92fr;
  align-items: center;
}

.hero-copy,
.hero-media,
.banner-card,
.cta-card,
.content-card,
.news-card,
.course-card,
.qa-card,
.qr-card,
.login-card,
.admin-panel {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 42px;
}

.hero-copy h1,
.page-hero h1,
.cta-card h2 {
  margin: 12px 0 16px;
  line-height: 1.12;
  font-size: clamp(2rem, 5vw, 3.7rem);
}

.hero-copy p,
.page-hero p {
  color: var(--muted);
  font-size: 1.05rem;
}

.original-page-hero {
  padding: 34px 0 18px;
}

.page-hero-panel {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 24px;
  align-items: stretch;
  padding: 30px;
  border-radius: 24px;
  background: #fff;
  box-shadow: var(--shadow);
}

.single-hero-panel {
  grid-template-columns: 1fr;
}

.detail-hero-panel {
  align-items: center;
}

.contact-hero-panel {
  grid-template-columns: minmax(0, 1.18fr) minmax(620px, 1.02fr);
}

.page-stat-grid,
.qa-stack,
.page-side-stack,
.link-list {
  display: grid;
  gap: 16px;
}

.page-stat-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
}

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

.page-stat-grid div {
  padding: 20px 18px;
  border-radius: 20px;
  background: linear-gradient(180deg, #eff6ff, #ffffff);
  border: 1px solid #dbeafe;
}

.page-stat-card {
  display: grid;
  align-content: center;
  min-height: 170px;
}

.page-stat-side {
  text-align: center;
}

.page-stat-side strong {
  font-size: 1.15rem;
}

.page-stat-side span {
  margin-top: 10px;
  line-height: 1.7;
}

.page-stat-side .page-stat-subline {
  margin-top: 4px;
  font-size: 0.96rem;
  color: #475569;
  white-space: nowrap;
  word-break: keep-all;
}

.page-stat-side-left {
  text-align: left;
}

.page-stat-side-right {
  justify-items: center;
}

.page-stat-contacts {
  grid-column: 1 / -1;
  justify-items: center;
  min-width: 0;
  text-align: center;
  background: linear-gradient(180deg, #dbeafe, #ffffff) !important;
  border-color: #93c5fd !important;
  box-shadow: 0 18px 32px rgba(37, 99, 235, 0.12);
}

.page-stat-kicker {
  margin: 0 0 8px;
  color: var(--primary);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.page-stat-hotline {
  margin-bottom: 0;
  font-size: clamp(2rem, 4vw, 3rem) !important;
  line-height: 1.1;
  letter-spacing: 0.06em;
  white-space: nowrap;
  word-break: keep-all;
}

.page-stat-subline {
  display: block;
  margin-top: 6px;
  font-size: 1rem;
  line-height: 1.6;
}

.page-stat-subline {
  color: #475569 !important;
}

.page-stat-grid strong {
  display: block;
  color: var(--primary);
  font-size: 1.3rem;
  line-height: 1.2;
}

.page-stat-grid span {
  color: var(--muted);
  font-size: 0.92rem;
  word-break: keep-all;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 0.92rem;
}

.breadcrumb a {
  color: var(--primary);
}

.breadcrumb-sep {
  color: #94a3b8;
}

.inline-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.inline-metrics span {
  padding: 8px 12px;
  border-radius: 999px;
  background: #eff6ff;
  color: var(--primary);
  font-size: 0.9rem;
  font-weight: 700;
}

.eyebrow {
  margin: 0;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.8rem;
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  border-radius: 999px;
  padding: 12px 22px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #3b82f6);
  color: #fff;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}

.btn-secondary {
  background: var(--secondary);
  color: var(--primary);
  border: 1px solid #bfdbfe;
}

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
}

.btn.full {
  width: 100%;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.stats div {
  padding: 18px;
  border-radius: 18px;
  background: var(--secondary);
  border: 1px solid #dbeafe;
}

.stats strong {
  display: block;
  font-size: 1.3rem;
  color: var(--primary);
}

.stats span {
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-media {
  padding: 18px;
}

.hero-media > video,
.hero-side-card video {
  width: 100%;
  border-radius: 18px;
  background: #09111f;
}

.hero-side-card {
  margin-top: 14px;
  border-radius: 18px;
  background: linear-gradient(180deg, #eff6ff, #ffffff);
  border: 1px solid var(--line);
  padding: 14px;
}

.hero-side-card p {
  margin: 0 0 12px;
  color: var(--muted);
  font-weight: 600;
}

.home-landing-hero {
  padding: 34px 0 14px;
}

.home-hero-shell,
.home-direction-grid,
.home-benefit-grid,
.home-audience-grid,
.home-video-grid {
  display: grid;
  gap: 24px;
}

.home-hero-shell {
  grid-template-columns: minmax(0, 1.05fr) minmax(380px, 0.95fr);
  align-items: center;
}

.home-hero-copy {
  padding: 38px;
  border-radius: 24px;
  background: linear-gradient(180deg, #ffffff, #f8fbff);
  box-shadow: var(--shadow);
}

.home-hero-copy h1 {
  margin: 10px 0 16px;
  line-height: 1.12;
  font-size: clamp(2rem, 5vw, 3.6rem);
}

.home-hero-lead {
  font-size: 1.06rem;
  color: var(--muted);
}

.home-hero-metrics {
  justify-content: flex-start;
}

.hero-consult-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 22px;
  padding: 16px 18px;
  border: 1px solid #dbeafe;
  border-radius: 18px;
  background: #eff6ff;
  color: var(--text);
}

.home-visual-card {
  position: relative;
  padding: 18px;
  border-radius: 28px;
  background: #fff;
  box-shadow: var(--shadow);
}

.home-hero-image,
.home-banner-image {
  width: 100%;
  height: auto;
  border-radius: 22px;
  display: block;
}

.home-visual-badge {
  position: absolute;
  top: 34px;
  left: 34px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.72);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 700;
}

.home-visual-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.home-direction-grid,
.home-benefit-grid,
.home-audience-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

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

.home-course-section {
  padding-top: 10px;
}

.home-course-stack {
  display: grid;
  gap: 28px;
}

.home-course-group {
  padding: 26px;
  border-radius: 26px;
  background: linear-gradient(180deg, #ffffff, #f8fbff);
  box-shadow: var(--shadow);
}

.home-course-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 18px;
}

.home-course-head h3 {
  margin: 0;
  font-size: 1.36rem;
}

.home-course-grid {
  margin-top: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.home-course-card {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  align-items: center;
  gap: 18px;
  padding: 18px;
  border: 1px solid #dbe4f0;
  box-shadow: none;
  transition: 0.2s ease;
}

.home-course-card:hover {
  transform: translateY(-2px);
  border-color: #93c5fd;
  box-shadow: var(--shadow);
}

.home-course-card img {
  width: 132px;
  height: 132px;
  min-width: 132px;
  border-radius: 18px;
  object-fit: cover;
}

.home-course-card .course-card-body {
  padding: 0;
}

.mini-card {
  padding: 26px;
}

.mini-card h3 {
  margin: 0 0 10px;
  font-size: 1.18rem;
}

.mini-card p,
.video-card p {
  margin: 0;
}

.home-category-copy {
  max-width: 760px;
  margin-top: 8px;
}

.video-shell {
  display: grid;
  place-items: center;
  gap: 16px;
  margin-top: 18px;
  padding: 18px;
  border-radius: 22px;
  background: #0f172a;
  overflow: hidden;
}

.video-shell img,
.lazy-video-player {
  width: 100%;
  border-radius: 18px;
  display: block;
}

.lazy-video-player {
  background: #000;
}

.original-hero-inner {
  text-align: center;
}

.original-hero-video-wrap {
  width: 100%;
}

.original-hero-video {
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: 80vh;
  margin: 0 auto;
  background: transparent;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.original-hero-image-wrap {
  width: 100%;
  margin: 28px 0 0;
}

.original-hero-image {
  width: 100%;
  height: auto;
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.original-sub-video-wrap {
  width: 100%;
  margin: 20px 0 0;
  border-radius: 18px;
  overflow: hidden;
  background: #000;
  box-shadow: var(--shadow);
}

.original-sub-video {
  width: auto;
  max-width: 100%;
  height: auto;
  height: auto;
  object-fit: contain;
  margin: 0 auto;
  background: #000;
}

.original-banner-wrap {
  width: 100%;
  margin: 28px 0 0;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.original-banner-image {
  width: 100%;
  height: auto;
  display: block;
}

.section {
  padding: 28px 0 38px;
}

.section-muted {
  background: linear-gradient(180deg, rgba(255,255,255,0.55), rgba(237, 244, 255, 0.9));
}

.section-head {
  margin-bottom: 20px;
}

.section-head h2 {
  margin: 8px 0 0;
  font-size: clamp(1.7rem, 3.5vw, 2.6rem);
}

.course-grid,
.news-grid,
.qa-grid,
.qr-grid {
  display: grid;
  gap: 22px;
}

.course-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.course-grid.grouped {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.news-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.course-card img,
.qr-card img,
.detail-hero-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius) var(--radius) 0 0;
}

.course-card-body,
.news-card,
.qa-card,
.qr-card {
  padding: 22px;
}

.course-card h3,
.news-card h3,
.qa-card h3,
.qr-card h3 {
  margin: 14px 0 10px;
  font-size: 1.15rem;
}

.course-card p,
.news-card p,
.qa-card p,
.qr-card p,
.muted,
.content-card p,
.content-card li,
.site-footer p {
  color: var(--muted);
}

.tag,
.faq-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--secondary);
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 700;
}

.tag-green {
  background: #ecfdf3;
  color: var(--green);
}

.link-arrow {
  display: inline-flex;
  margin-top: 10px;
  color: var(--primary);
  font-weight: 700;
}

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

.category-stack {
  display: grid;
  gap: 24px;
}

.category-block {
  padding: 26px;
  border-radius: 24px;
  background: #fff;
  box-shadow: var(--shadow);
}

.category-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 16px;
  margin-bottom: 18px;
}

.category-head h3 {
  margin: 6px 0 0;
  font-size: 1.55rem;
}

.feature-image img,
.banner-card img {
  width: 100%;
  border-radius: var(--radius);
  object-fit: cover;
}

.original-course-section {
  padding-top: 18px;
}

.original-category-stack {
  gap: 44px;
}

.original-category-block {
  padding: 0;
  box-shadow: none;
  border-radius: 0;
  background: transparent;
}

.original-category-head {
  margin-bottom: 0;
}

.category-count {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 700;
}

.original-category-head h3 {
  margin: 0;
  padding: 16px 18px;
  border-left: 4px solid #2563eb;
  border-radius: 8px;
  background: #fff;
  font-size: 1.32rem;
  box-shadow: var(--shadow);
}

.home-category-copy {
  margin: 12px 0 0;
  max-width: 920px;
}

.home-copy-card {
  padding: 26px;
}

.home-intro-card h1 {
  margin: 8px 0 14px;
  line-height: 1.2;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
}

.home-copy-grid {
  align-items: stretch;
}

.home-copy-list {
  margin: 0;
  padding-left: 20px;
}

.home-copy-list li + li {
  margin-top: 10px;
}

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

.home-faq-item h3 {
  margin: 0 0 8px;
  font-size: 1.08rem;
}

.home-faq-item p {
  margin: 0;
}

.home-meta-line {
  margin-top: 16px;
  font-size: 0.96rem;
}

.original-course-grid {
  margin-top: 18px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.original-course-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  border: 1px solid #d1d5db;
  border-radius: 12px;
  box-shadow: none;
  transition: 0.2s ease;
}

.original-course-card:hover {
  border-color: #9ca3af;
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.original-course-card img {
  width: 96px;
  height: 96px;
  min-width: 96px;
  border-radius: 14px;
  object-fit: cover;
}

.original-course-card .course-card-body {
  padding: 0;
}

.original-course-card h3 {
  margin: 0 0 8px;
  font-size: 1.02rem;
}

.original-course-card p {
  margin: 0 0 10px;
  font-size: 0.94rem;
}

.footer-simple {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 32px 0 20px;
}

.footer-contact-block {
  width: 100%;
  max-width: 980px;
  text-align: center;
}

.footer-contact-title {
  margin: 0 0 14px;
  color: #dbeafe;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.1;
}

.footer-contact-company,
.footer-contact-address {
  margin: 8px 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: 1.35rem;
  font-weight: 700;
}

.footer-contact-hotline {
  margin: 18px 0 10px;
  color: #93c5fd;
  font-size: clamp(2.4rem, 6vw, 4.8rem);
  line-height: 1;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.footer-contact-line,
.footer-contact-mobile {
  margin: 6px 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(1.2rem, 2.4vw, 2rem);
  font-weight: 700;
}

.footer-qrs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.footer-qr-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.footer-qr-item img {
  width: 96px;
  height: 96px;
  object-fit: cover;
  border-radius: 10px;
  background: #e5e7eb;
}

.footer-qr-item span {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.82rem;
}

.feature-copy,
.content-card {
  padding: 30px;
}

.bullet-list {
  padding-left: 20px;
}

.bullet-list li {
  margin-bottom: 10px;
}

.banner-card {
  padding: 16px;
}

.compact {
  gap: 16px;
}

.compact .qr-card {
  padding: 18px;
}

.compact .qr-card img {
  aspect-ratio: 1 / 1;
  border-radius: 16px;
}

.featured-news-card {
  padding: 28px;
}

.link-list-item {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: #f8fbff;
}

.link-list-item strong {
  color: var(--text);
}

.link-list-item span {
  color: var(--muted);
  font-size: 0.9rem;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.topic-card h3 {
  margin: 0 0 10px;
}

.topic-card p:last-of-type {
  margin-bottom: 14px;
}

.page-side-stack {
  align-content: start;
}

.qa-stack {
  gap: 22px;
}

.qa-category-card h2 {
  margin-top: 0;
  margin-bottom: 18px;
}

.article-detail-layout {
  align-items: start;
}

.article-main-card {
  min-height: 100%;
}

.article-shell,
.faq-item,
.summary-box {
  margin-bottom: 18px;
}

.summary-box {
  padding: 18px 20px;
  border-left: 4px solid var(--primary);
  background: #f8fbff;
  border-radius: 16px;
  color: var(--muted);
  box-shadow: var(--shadow);
}

.rich-text h3,
.rich-text h4 {
  margin: 26px 0 12px;
}

.rich-text ul {
  padding-left: 22px;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px 20px;
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.qa-summary-main {
  display: grid;
  gap: 8px;
}

.faq-direct-link {
  color: var(--text);
  text-decoration: none;
}

.faq-direct-link:hover {
  text-decoration: underline;
}

.faq-open-hint {
  flex-shrink: 0;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 600;
}

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

.faq-item div {
  margin-top: 12px;
  color: var(--muted);
}

.faq-detail-link {
  margin: 12px 0 0;
}

@media (max-width: 1024px) {
  .topic-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .topic-grid {
    grid-template-columns: 1fr;
  }
}

.cta-section {
  padding: 24px 0 56px;
}

.cta-card {
  padding: 44px;
  text-align: center;
  background: linear-gradient(135deg, #1d4ed8, #2563eb, #3b82f6);
  color: #fff;
}

.cta-card p {
  color: rgba(255, 255, 255, 0.88);
}

.site-footer {
  margin-top: 26px;
  background: #0f172a;
  color: rgba(255, 255, 255, 0.85);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 28px;
  padding: 42px 0 24px;
}

.footer-title {
  margin: 0 0 12px;
  color: #fff;
  font-weight: 700;
}

.site-footer a {
  color: #93c5fd;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 16px;
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
}

.chat-widget {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 80;
}

.chat-toggle,
.chat-form button {
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), #3b82f6);
  color: #fff;
  padding: 14px 18px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--shadow);
}

.chat-panel {
  width: min(360px, calc(100vw - 24px));
  margin-top: 12px;
  background: #fff;
  border-radius: 24px;
  box-shadow: 0 18px 40px rgba(16, 33, 58, 0.16);
  border: 1px solid var(--line);
  overflow: hidden;
}

.chat-panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  background: var(--secondary);
  color: var(--primary);
}

.chat-panel-head button {
  border: 0;
  background: transparent;
  color: var(--primary);
  cursor: pointer;
}

.chat-messages {
  max-height: 340px;
  overflow-y: auto;
  padding: 16px;
  background: #f8fbff;
}

.chat-message {
  max-width: 88%;
  margin-bottom: 12px;
  padding: 12px 14px;
  border-radius: 18px;
  font-size: 0.95rem;
}

.chat-message.is-bot {
  background: #fff;
  border: 1px solid var(--line);
}

.chat-message.is-user {
  margin-left: auto;
  background: var(--primary);
  color: #fff;
}

.chat-form {
  display: flex;
  gap: 10px;
  padding: 14px;
  border-top: 1px solid var(--line);
  background: #fff;
}

.chat-form input {
  flex: 1;
}

.admin-body,
.admin-login-body {
  background: linear-gradient(180deg, #eef4ff, #f8fbff);
}

.login-shell,
.admin-shell {
  width: min(1280px, calc(100% - 32px));
  margin: 32px auto;
}

.login-shell {
  min-height: calc(100vh - 64px);
  display: grid;
  place-items: center;
}

.login-card {
  width: min(480px, 100%);
  padding: 34px;
}

.login-brand h1 {
  margin: 8px 0 10px;
}

.stack-form {
  display: grid;
  gap: 16px;
}

.stack-form label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-weight: 600;
}

input[type="text"],
input[type="password"],
input[type="number"],
input[type="file"],
textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
}

textarea {
  resize: vertical;
}

.checkbox {
  display: flex !important;
  align-items: center;
  gap: 10px;
}

.checkbox input {
  width: auto;
}

.flash {
  margin-bottom: 18px;
  padding: 14px 16px;
  border-radius: 16px;
  background: #ecfdf3;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.centered {
  text-align: center;
}

.admin-shell {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 24px;
  align-items: start;
}

.admin-sidebar,
.admin-main {
  background: #fff;
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.admin-sidebar {
  padding: 26px;
  position: sticky;
  top: 24px;
}

.admin-tabs {
  display: grid;
  gap: 10px;
  margin: 24px 0;
}

.admin-tab {
  padding: 12px 14px;
  border-radius: 16px;
  font-weight: 700;
  color: var(--muted);
}

.admin-tab.is-active,
.admin-tab:hover {
  background: var(--secondary);
  color: var(--primary);
}

.admin-main {
  padding: 24px;
}

.admin-panel + .admin-panel {
  margin-top: 24px;
}

.admin-panel {
  padding: 24px;
}

.admin-panel h2,
.admin-panel h3 {
  margin-top: 0;
}

.table-wrap {
  overflow-x: auto;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table th,
.admin-table td {
  padding: 14px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.table-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.table-actions form {
  margin: 0;
}

.table-actions a,
.table-actions button {
  border: 0;
  background: transparent;
  color: var(--primary);
  font-weight: 700;
  cursor: pointer;
  padding: 0;
}

.media-mini-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.media-mini {
  padding: 14px;
  border-radius: 16px;
  background: #f8fbff;
  border: 1px solid var(--line);
}

.media-mini span {
  display: block;
  font-weight: 700;
  margin-bottom: 8px;
}

.media-mini code {
  color: var(--primary);
  word-break: break-all;
}

.meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 1100px) {
  .home-course-grid {
    grid-template-columns: 1fr;
  }

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

  .home-video-grid {
    grid-template-columns: 1fr;
  }

  .course-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

  .page-stat-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 920px) {
  .home-hero-shell {
    grid-template-columns: 1fr;
  }

  .header-inner,
  .hero-grid,
  .detail-hero,
  .feature-grid,
  .contact-grid,
  .two-col,
  .admin-shell,
  .footer-grid {
    grid-template-columns: 1fr;
    display: grid;
  }

  .header-inner {
    padding: 16px 0;
  }

  .site-nav {
    flex-wrap: wrap;
  }

  .header-phone {
    display: none;
  }

  .course-grid,
  .course-grid.grouped,
  .qa-grid,
  .qr-grid,
  .news-grid,
  .media-mini-grid,
  .home-direction-grid,
  .home-benefit-grid,
  .home-audience-grid,
  .home-course-grid {
    grid-template-columns: 1fr;
  }

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

  .admin-sidebar {
    position: static;
  }

  .original-course-grid,
  .footer-qrs,
  .inline-metrics,
  .home-visual-actions {
    justify-content: center;
  }

  .home-hero-copy,
  .mini-card,
  .home-course-group {
    padding: 24px;
  }

  .hero-consult-strip {
    justify-content: center;
  }

  .home-course-card {
    grid-template-columns: 1fr;
  }

  .home-course-card img {
    width: 100%;
    height: auto;
    min-width: 0;
    aspect-ratio: 4 / 3;
  }

  .footer-contact-company,
  .footer-contact-address {
    font-size: 1.05rem;
  }

  .page-hero-panel {
    grid-template-columns: 1fr;
    padding: 22px;
  }

  .contact-hero-panel {
    grid-template-columns: 1fr;
  }

  .contact-stat-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .brand-logo {
    width: 58px;
    height: 58px;
  }

  .brand-title {
    height: 34px;
  }

  .hero-copy,
  .cta-card,
  .feature-copy,
  .content-card,
  .admin-panel,
  .login-card {
    padding: 22px;
  }

  .site-nav {
    gap: 4px;
  }

  .home-visual-badge {
    position: static;
    display: inline-flex;
    margin-bottom: 12px;
  }

  .home-visual-card {
    padding: 14px;
  }

  .nav-link {
    padding: 10px 12px;
    font-size: 0.92rem;
  }
}