/* =========================================
   首页品牌内容区 — lhys 内容 + lhyshd 极光科幻 + 橙色品牌点缀
   ========================================= */

:root {
  --brand-orange: #ff8900;
  --brand-orange-soft: rgba(255, 137, 0, 0.12);
  --brand-orange-glow: rgba(255, 137, 0, 0.35);
}

.section-brand {
  padding: clamp(64px, 8vw, 100px) 0;
  position: relative;
  overflow: hidden;
}
.section-brand::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(720px, 88%);
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--brand-orange), transparent);
  opacity: 0.55;
  pointer-events: none;
}
.section-brand::after {
  content: '';
  position: absolute;
  top: -80px;
  right: -60px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--brand-orange-soft), transparent 68%);
  pointer-events: none;
}
.section-brand--alt {
  background: linear-gradient(180deg, rgba(255, 137, 0, 0.06) 0%, var(--panel-light) 28%, var(--space-black) 100%);
}
.section-brand--deep {
  background:
    radial-gradient(ellipse at 8% 0%, rgba(255, 137, 0, 0.07), transparent 42%),
    var(--space-black);
}
.section-brand--panel {
  background:
    radial-gradient(ellipse at 92% 0%, rgba(255, 137, 0, 0.06), transparent 40%),
    var(--panel);
}

/* 品牌区内标题：关键词橙色 */
.section-brand .shv2-title {
  position: relative;
}
.section-brand .section-header-v2 {
  margin-bottom: 36px;
}
.section-brand .shv2-eyebrow {
  color: var(--brand-orange);
}
.section-brand .shv2-dot {
  background: var(--brand-orange) !important;
  box-shadow: 0 0 10px var(--brand-orange-glow) !important;
}
.brand-accent {
  color: var(--brand-orange);
}

.section-brand-news .shv2-eyebrow {
  color: var(--brand-orange);
}
.section-brand-news .shv2-dot {
  background: var(--brand-orange) !important;
  box-shadow: 0 0 10px var(--brand-orange-glow) !important;
}
.section-brand-news .shv2-more:hover {
  border-color: var(--brand-orange);
  color: var(--brand-orange);
}

.brand-reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.brand-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* —— Why learn —— */
.brand-why-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
}
.brand-why-card {
  grid-column: span 2;
  padding: 26px 22px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-glow);
  border-top: 3px solid var(--brand-orange);
  background: var(--dark-panel);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s;
}
.brand-why-card:nth-child(4),
.brand-why-card:nth-child(5) {
  grid-column: span 3;
}
.brand-why-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 36px var(--brand-orange-glow), var(--shadow-md);
  border-color: rgba(255, 137, 0, 0.35);
}
.brand-why-card strong {
  display: block;
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--brand-orange);
  margin-bottom: 10px;
}
.brand-why-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* —— Pain points —— */
.brand-pain-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.brand-pain-item {
  display: flex;
  gap: 14px;
  padding: 20px 18px;
  background: var(--dark-panel);
  border: 1px solid var(--border-dim);
  border-left: 3px solid var(--brand-orange);
  border-radius: var(--radius-lg);
  transition: transform 0.3s ease, box-shadow 0.3s;
}
.brand-pain-item:hover {
  transform: translateX(4px);
  box-shadow: 0 8px 24px var(--brand-orange-glow);
  border-left-color: var(--orange-dim);
}
.brand-pain-num {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--brand-orange-soft);
  color: var(--brand-orange);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  display: grid;
  place-items: center;
}
.brand-pain-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* —— Gains —— */
.brand-gain-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.brand-gain-item {
  text-align: center;
  padding: 24px 16px;
  background: var(--dark-panel);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
  transition: transform 0.3s ease, border-color 0.3s;
}
.brand-gain-item:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 137, 0, 0.4);
  box-shadow: 0 10px 28px var(--brand-orange-glow);
}
.brand-gain-icon {
  width: 88px;
  height: 88px;
  margin: 0 auto 14px;
  display: grid;
  place-items: center;
}
.brand-gain-icon img {
  width: 88px;
  height: 88px;
  object-fit: contain;
  display: block;
}
.brand-gain-item h3 {
  font-size: 16px;
  margin: 0 0 8px;
  color: var(--brand-orange);
  font-weight: 700;
}
.brand-gain-item p {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-muted);
}

/* —— Compare —— */
.brand-compare {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 20px;
  align-items: stretch;
}
.brand-compare-panel {
  padding: 28px 24px;
  background: var(--dark-panel);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
}
.brand-compare-panel.is-accent {
  border-color: rgba(255, 137, 0, 0.4);
  background: linear-gradient(160deg, #fff 0%, #fff8f0 100%);
  box-shadow: 0 12px 32px var(--brand-orange-glow);
}
.brand-compare-panel h3 {
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 0.03em;
  margin: 0 0 14px;
  color: var(--brand-orange);
}
.brand-compare-panel.is-accent h3 {
  color: var(--brand-orange);
}
.brand-compare-panel p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-secondary);
}
.brand-compare-panel p + p {
  margin-top: 12px;
}
.brand-compare-media {
  margin-bottom: 14px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 137, 0, 0.2);
}
.brand-compare-media img {
  width: 100%;
  max-height: 180px;
  object-fit: cover;
  display: block;
}
.brand-vs {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 900;
  color: var(--brand-orange);
  align-self: center;
  letter-spacing: 0.08em;
  text-shadow: 0 0 20px var(--brand-orange-glow);
}

/* —— Training steps —— */
.brand-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.brand-step {
  position: relative;
  padding: 28px 20px 22px;
  background: var(--dark-panel);
  border: 1px solid var(--border-glow);
  border-top: 3px solid var(--brand-orange);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.brand-step-index {
  position: absolute;
  top: 10px;
  right: 14px;
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 900;
  color: rgba(255, 137, 0, 0.14);
  line-height: 1;
}
.brand-step h3 {
  font-size: 20px;
  margin: 0 0 10px;
  color: var(--brand-orange);
  font-family: var(--font-display);
}
.brand-step p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-secondary);
}
.brand-intro {
  max-width: 720px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-secondary);
  margin: 0 0 32px;
}

/* —— Laws —— */
.brand-laws {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.brand-law {
  display: flex;
  gap: 20px;
  align-items: center;
  padding: 28px 24px;
  background: var(--dark-panel);
  border: 1px solid var(--border-dim);
  border-left: 3px solid var(--brand-orange);
  border-radius: var(--radius-lg);
}
.brand-law-img {
  flex-shrink: 0;
  width: 140px;
  height: 140px;
  object-fit: contain;
  display: block;
}
.brand-law:nth-child(2) {
  flex-direction: row-reverse;
}
.brand-law:nth-child(2) .brand-law-img {
  order: 2;
}
.brand-law h3 {
  font-size: 20px;
  margin: 0 0 10px;
  font-family: var(--font-display);
  color: var(--brand-orange);
}
.brand-law p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
}

/* —— Six opens —— */
.brand-six-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
}
.brand-six-item {
  text-align: center;
  padding: 20px 10px;
  background: var(--dark-panel);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
  transition: transform 0.3s ease, border-color 0.3s;
}
.brand-six-item img {
  width: 100%;
  max-width: 120px;
  height: auto;
  margin: 0 auto 12px;
  display: block;
  object-fit: contain;
}
.brand-six-item:hover {
  transform: translateY(-6px);
  border-color: var(--orange);
}
.brand-six-item h3 {
  font-size: 15px;
  margin: 0 0 6px;
  color: var(--brand-orange);
  font-weight: 700;
}
.brand-six-item p {
  margin: 0;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* —— Outcomes —— */
.brand-outcomes {
  display: grid;
  grid-template-columns: 1fr 1.15fr 1fr;
  gap: 16px;
  align-items: stretch;
}
.brand-outcome {
  padding: 32px 24px;
  background: var(--dark-panel);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
  text-align: center;
}
.brand-outcome.is-focus {
  background: linear-gradient(160deg, var(--brand-orange) 0%, #e07000 42%, var(--purple) 100%);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 16px 40px var(--brand-orange-glow);
}
.brand-outcome h3 {
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: 0.15em;
  margin: 0 0 16px;
}
.brand-outcome.is-focus h3 { color: #fff; }
.brand-outcome:not(.is-focus) h3 { color: var(--brand-orange); }
.brand-outcome p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  white-space: pre-line;
}
.brand-outcome:not(.is-focus) p { color: var(--text-secondary); }
.brand-cta-row {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 36px;
}

.brand-video-frame {
  position: relative;
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  aspect-ratio: 16 / 9;
  background: #111;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 137, 0, 0.25);
  box-shadow: 0 16px 48px var(--brand-orange-glow), var(--shadow-md);
}
.brand-video-frame video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  background: #111;
}

/* —— News (lhyshd style) —— */
.section-brand-news {
  padding: clamp(64px, 8vw, 100px) 0;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(255, 137, 0, 0.08), transparent 55%),
    var(--space-black);
}
.brand-news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.brand-news-card {
  background: var(--dark-panel);
  border: 1px solid var(--border-glow);
  border-top: 2px solid var(--brand-orange);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.brand-news-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 14px 36px var(--brand-orange-glow), var(--shadow-md);
}
.brand-news-card a.cover {
  display: block;
  aspect-ratio: 16 / 10;
  background: var(--panel-light);
  overflow: hidden;
}
.brand-news-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}
.brand-news-card:hover img { transform: scale(1.04); }
.brand-news-fallback {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  min-height: 160px;
  color: var(--brand-orange);
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.1em;
  background: linear-gradient(145deg, #fff8f0, var(--brand-orange-soft));
}
.brand-news-card .body {
  padding: 16px 18px 20px;
}
.brand-news-card time {
  display: block;
  font-size: 11px;
  font-family: var(--font-display);
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.brand-news-card h3 {
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.45;
  font-weight: 700;
}
.brand-news-card h3 a {
  color: var(--text-primary);
  transition: color 0.2s;
}
.brand-news-card h3 a:hover { color: var(--brand-orange); }
.brand-news-card p {
  margin: 0;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.brand-news-empty,
.brand-news-loading {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}

@media (max-width: 1100px) {
  .brand-why-grid { grid-template-columns: 1fr 1fr; }
  .brand-why-card,
  .brand-why-card:nth-child(4),
  .brand-why-card:nth-child(5) { grid-column: span 1; }
  .brand-gain-grid { grid-template-columns: repeat(2, 1fr); }
  .brand-six-grid { grid-template-columns: repeat(3, 1fr); }
  .brand-steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .brand-pain-grid,
  .brand-laws,
  .brand-compare { grid-template-columns: 1fr; }
  .brand-law,
  .brand-law:nth-child(2) {
    flex-direction: column;
    text-align: center;
  }
  .brand-law-img {
    width: 100px;
    height: 100px;
    margin: 0 auto;
  }
  .brand-law:nth-child(2) .brand-law-img {
    order: 0;
  }
  .brand-vs { text-align: center; padding: 8px 0; }
  .brand-outcomes { grid-template-columns: 1fr; }
  .brand-outcome.is-focus { order: -1; }
  .brand-news-grid { grid-template-columns: 1fr; }
  .brand-six-grid { grid-template-columns: repeat(2, 1fr); }
  .brand-steps { grid-template-columns: 1fr; }
  .brand-gain-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .brand-gain-grid { grid-template-columns: 1fr; }
  .brand-six-grid { grid-template-columns: 1fr; }
  .brand-why-grid { grid-template-columns: 1fr; }
}

/* —— 首页服务矩阵 + Knowledge 入口 —— */
.home-service-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.home-service-link {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 16px 20px;
  align-items: center;
  padding: 18px 20px;
  text-decoration: none;
  color: inherit;
  border: 1px solid rgba(255, 137, 0, 0.18);
  background:
    linear-gradient(105deg, rgba(255, 137, 0, 0.07) 0%, transparent 42%),
    rgba(255, 255, 255, 0.03);
  transition: border-color 0.25s ease, transform 0.25s ease, background 0.25s ease;
}
.home-service-link:hover {
  border-color: rgba(255, 137, 0, 0.55);
  transform: translateX(4px);
  background:
    linear-gradient(105deg, rgba(255, 137, 0, 0.12) 0%, transparent 48%),
    rgba(255, 255, 255, 0.05);
}
.home-service-idx {
  font-family: var(--font-display, Orbitron, sans-serif);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--brand-orange);
  min-width: 2em;
}
.home-service-body {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}
.home-service-body strong {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary, #1a1a2e);
}
.home-service-body em {
  font-style: normal;
  font-size: 13px;
  color: var(--brand-orange);
  font-weight: 600;
}
.home-service-body span {
  font-size: 13px;
  line-height: 1.55;
  color: var(--text-muted, #6b7280);
}
.home-service-go {
  color: var(--brand-orange);
  opacity: 0.7;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.home-service-link:hover .home-service-go {
  opacity: 1;
  transform: translateX(3px);
}

.home-knowledge-panel {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 28px;
  align-items: stretch;
  margin-top: 8px;
}
.home-knowledge-main {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
  padding: 28px 26px;
  text-decoration: none;
  color: inherit;
  border: 1px solid rgba(255, 137, 0, 0.22);
  background:
    radial-gradient(ellipse at 0% 0%, rgba(255, 137, 0, 0.14), transparent 55%),
    rgba(255, 255, 255, 0.04);
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.home-knowledge-main:hover {
  border-color: rgba(255, 137, 0, 0.6);
  transform: translateY(-2px);
}
.home-knowledge-kicker {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand-orange);
  font-weight: 600;
}
.home-knowledge-main strong {
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.35;
  color: var(--text-primary, #1a1a2e);
}
.home-knowledge-main > span:last-child {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-muted, #6b7280);
}
.home-knowledge-qs {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.home-knowledge-qs a {
  display: block;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary, #1a1a2e);
  border-left: 3px solid rgba(255, 137, 0, 0.35);
  background: rgba(255, 255, 255, 0.04);
  transition: border-color 0.2s ease, background 0.2s ease, padding-left 0.2s ease;
}
.home-knowledge-qs a:hover {
  border-left-color: var(--brand-orange);
  background: rgba(255, 137, 0, 0.08);
  padding-left: 20px;
}
.home-hub-links {
  margin: 22px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-muted, #6b7280);
}
.home-hub-links a {
  color: var(--brand-orange);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (max-width: 768px) {
  .home-service-link {
    grid-template-columns: auto 1fr;
    gap: 12px 14px;
  }
  .home-service-go { display: none; }
  .home-knowledge-panel {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

/* —— 首页近期课程（巨海式卡片 + 悬停） —— */
.section-home-courses {
  padding: clamp(56px, 7vw, 88px) 0;
  background:
    linear-gradient(180deg, #f7f5f2 0%, #f3f0eb 100%);
  color: #1c1917;
}
.home-courses-head {
  text-align: center;
  margin-bottom: 36px;
}
.section-home-courses .shv2-eyebrow {
  justify-content: center;
  color: #9a3412;
}
.section-home-courses .shv2-dot--orange {
  background: #ea580c;
  box-shadow: 0 0 8px rgba(234, 88, 12, 0.45);
}
.home-courses-title {
  margin: 10px 0 8px;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #1c1917;
}
.home-courses-lead {
  margin: 0;
  font-size: 0.95rem;
  color: #78716c;
}
.home-courses-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}
.home-course-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid #d6d3d1;
  border-radius: 4px;
  overflow: hidden;
  transition: transform 0.2s linear, box-shadow 0.2s linear, border-color 0.2s linear;
}
.home-course-card:hover {
  transform: translateY(-6px);
  border-color: #ea580c;
  box-shadow: 0 14px 28px rgba(28, 25, 23, 0.14);
}
.home-course-card__date {
  position: relative;
  padding: 18px 12px 34px;
  text-align: center;
  color: #fff;
  background: #78716c;
  clip-path: polygon(0 0, 100% 0, 100% 78%, 50% 100%, 0 78%);
  transition: background 0.2s linear;
}
.home-course-card:hover .home-course-card__date {
  background: linear-gradient(145deg, #f97316, #c2410c);
}
.home-course-card__month {
  font-size: 0.9rem;
  opacity: 0.95;
  margin-bottom: 6px;
}
.home-course-card__range span {
  font-size: clamp(1.35rem, 2vw, 1.75rem);
  font-weight: 800;
  letter-spacing: 0.02em;
  line-height: 1.15;
}
.home-course-card__body {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 22px 14px 18px;
}
.home-course-card__status {
  margin: 0 0 10px;
  font-size: 0.92rem;
  color: #a8a29e;
}
.home-course-card__status.is-hot {
  color: #be123c;
  font-weight: 700;
}
.home-course-card__name {
  margin: 0 0 10px;
  font-size: 1rem;
  font-weight: 700;
  color: #1c1917;
  line-height: 1.35;
}
.home-course-card__city,
.home-course-card__teacher,
.home-course-card__session {
  margin: 0 0 6px;
  font-size: 0.92rem;
  color: #78716c;
}
.home-course-card__teacher {
  text-decoration: none;
  color: #57534e;
}
.home-course-card__teacher:hover {
  color: #c2410c;
}
.home-course-card__cta {
  display: inline-block;
  margin-top: 16px;
  min-width: 52%;
  padding: 10px 14px;
  border: 0;
  border-radius: 3px;
  background: #a8a29e;
  color: #fff !important;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s linear, transform 0.2s linear;
}
.home-course-card:hover .home-course-card__cta {
  background: #c2410c;
}
.home-course-card__cta:hover {
  background: #9a3412;
}
.home-courses-more-wrap {
  margin-top: 28px;
  text-align: center;
}
.home-courses-more {
  display: inline-block;
  min-width: 148px;
  padding: 12px 22px;
  border: 2px solid #1c1917;
  color: #1c1917;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  transition: background 0.2s linear, color 0.2s linear;
}
.home-courses-more:hover {
  background: #1c1917;
  color: #fff;
}
.home-courses-loading,
.home-courses-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 28px 12px;
  color: #78716c;
}

@media (max-width: 1100px) {
  .home-courses-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
@media (max-width: 720px) {
  .home-courses-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }
  .home-course-card__range span {
    font-size: 1.35rem;
  }
}
@media (max-width: 420px) {
  .home-courses-grid {
    grid-template-columns: 1fr;
    max-width: 320px;
    margin: 0 auto;
  }
}

/* —— 首页 20周年专题入口 —— */
.home-20th-gate {
  position: relative;
  padding: 28px 24px 8px;
  background:
    radial-gradient(ellipse 70% 80% at 12% 50%, rgba(255, 137, 0, 0.1), transparent 55%),
    radial-gradient(ellipse 50% 70% at 88% 40%, rgba(196, 163, 90, 0.08), transparent 50%),
    linear-gradient(180deg, #0a0a0b 0%, #141210 100%);
  overflow: hidden;
}
.home-20th-card {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px 36px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 36px;
  text-decoration: none;
  color: #fff;
  border: 1px solid rgba(255, 180, 70, 0.35);
  background:
    linear-gradient(120deg, rgba(255, 137, 0, 0.12) 0%, rgba(20, 16, 12, 0.92) 38%, rgba(12, 12, 14, 0.96) 100%);
  box-shadow:
    0 0 0 1px rgba(255, 137, 0, 0.08) inset,
    0 18px 50px rgba(0, 0, 0, 0.45);
  overflow: hidden;
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}
.home-20th-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 180, 70, 0.75);
  box-shadow:
    0 0 0 1px rgba(255, 137, 0, 0.18) inset,
    0 0 40px rgba(255, 137, 0, 0.22),
    0 24px 60px rgba(0, 0, 0, 0.5);
}
.home-20th-glow {
  position: absolute;
  inset: -40%;
  background: conic-gradient(from 180deg, transparent, rgba(255, 137, 0, 0.18), transparent 40%, rgba(255, 200, 100, 0.12), transparent 70%);
  animation: home20thSpin 10s linear infinite;
  pointer-events: none;
  opacity: 0.7;
}
.home-20th-card:hover .home-20th-glow {
  opacity: 1;
  animation-duration: 6s;
}
.home-20th-shimmer {
  position: absolute;
  top: 0;
  left: -40%;
  width: 35%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.12), transparent);
  transform: skewX(-18deg);
  animation: home20thShimmer 3.6s ease-in-out infinite;
  pointer-events: none;
}
.home-20th-ring {
  position: absolute;
  left: 52px;
  top: 50%;
  width: 120px;
  height: 120px;
  margin-top: -60px;
  border-radius: 50%;
  border: 1px solid rgba(255, 180, 70, 0.35);
  animation: home20thPulse 2.8s ease-out infinite;
  pointer-events: none;
}
.home-20th-ring--2 {
  width: 160px;
  height: 160px;
  margin-top: -80px;
  left: 32px;
  border-color: rgba(255, 137, 0, 0.2);
  animation-delay: 0.9s;
}
.home-20th-num {
  position: relative;
  z-index: 1;
  width: 108px;
  height: 108px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 35% 30%, #ffb347 0%, #ff8900 45%, #c45a00 100%);
  box-shadow:
    0 0 0 6px rgba(255, 137, 0, 0.18),
    0 0 28px rgba(255, 137, 0, 0.45);
  animation: home20thFloat 4s ease-in-out infinite;
}
.home-20th-num span {
  font-family: 'Orbitron', 'Noto Serif SC', sans-serif;
  font-size: 2.4rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  color: #1a0e00;
  line-height: 1;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.25);
}
.home-20th-copy {
  position: relative;
  z-index: 1;
  min-width: 0;
}
.home-20th-badge {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.28em;
  color: #ffb347;
  font-weight: 700;
  margin-bottom: 8px;
}
.home-20th-title {
  display: block;
  font-family: 'Noto Serif SC', serif;
  font-size: clamp(1.35rem, 2.6vw, 1.85rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 8px;
}
.home-20th-lead {
  display: block;
  font-style: normal;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.62);
  line-height: 1.65;
  font-weight: 400;
}
.home-20th-cta {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  background: #ff8900;
  color: #1a0e00;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  white-space: nowrap;
  box-shadow: 0 8px 24px rgba(255, 137, 0, 0.35);
  transition: background 0.2s ease, transform 0.2s ease;
}
.home-20th-card:hover .home-20th-cta {
  background: #ffb347;
  transform: translateX(4px);
}
.home-20th-cta i {
  transition: transform 0.25s ease;
}
.home-20th-card:hover .home-20th-cta i {
  transform: translateX(4px);
}

@keyframes home20thSpin {
  to { transform: rotate(360deg); }
}
@keyframes home20thShimmer {
  0%, 100% { left: -40%; opacity: 0; }
  20% { opacity: 1; }
  55% { left: 110%; opacity: 0.6; }
  56%, 100% { opacity: 0; }
}
@keyframes home20thPulse {
  0% { transform: scale(0.85); opacity: 0.7; }
  70% { transform: scale(1.25); opacity: 0; }
  100% { transform: scale(1.25); opacity: 0; }
}
@keyframes home20thFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

@media (max-width: 900px) {
  .home-20th-gate { padding: 20px 16px 4px; }
  .home-20th-card {
    grid-template-columns: auto 1fr;
    padding: 22px 20px;
    gap: 18px;
  }
  .home-20th-cta { grid-column: 1 / -1; justify-content: center; }
  .home-20th-ring,
  .home-20th-ring--2 { display: none; }
  .home-20th-num { width: 84px; height: 84px; }
  .home-20th-num span { font-size: 1.85rem; }
}
@media (prefers-reduced-motion: reduce) {
  .home-20th-glow,
  .home-20th-shimmer,
  .home-20th-ring,
  .home-20th-num {
    animation: none !important;
  }
}

/* —— Home: real course session archive entry + marquee —— */
.home-session-gate {
  position: relative;
  padding: 10px 24px 28px;
  background:
    radial-gradient(ellipse 60% 70% at 10% 40%, rgba(45, 106, 79, 0.28), transparent 55%),
    radial-gradient(ellipse 40% 50% at 90% 60%, rgba(212, 168, 83, 0.08), transparent 50%),
    linear-gradient(180deg, #0a1612 0%, #132a22 100%);
  overflow: hidden;
}
.home-session-marquee {
  max-width: 1180px;
  margin: 0 auto 8px;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.home-session-marquee--rev { margin: 8px auto 0; }
.home-session-marquee-track {
  display: flex;
  width: max-content;
  gap: 0;
  animation: homeSessionMarquee 28s linear infinite;
  will-change: transform;
}
.home-session-marquee--rev .home-session-marquee-track {
  animation-name: homeSessionMarqueeRev;
  animation-duration: 34s;
}
.home-session-marquee-track > span {
  flex: 0 0 auto;
  padding: 0 18px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: rgba(110, 231, 183, 0.55);
  white-space: nowrap;
  position: relative;
}
.home-session-marquee-track > span::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  width: 4px;
  height: 4px;
  margin-top: -2px;
  border-radius: 50%;
  background: rgba(212, 168, 83, 0.55);
}
@keyframes homeSessionMarquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
@keyframes homeSessionMarqueeRev {
  from { transform: translateX(-50%); }
  to { transform: translateX(0); }
}

.home-session-card {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 22px 28px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px 28px;
  text-decoration: none;
  color: #e8f5ef;
  border: 1px solid transparent;
  background:
    linear-gradient(120deg, rgba(45, 106, 79, 0.4) 0%, rgba(19, 42, 34, 0.96) 42%, rgba(12, 26, 21, 0.98) 100%) padding-box,
    linear-gradient(#132a22, #132a22) padding-box;
  overflow: hidden;
  isolation: isolate;
  transition: transform 0.28s ease, box-shadow 0.28s ease;
}
.home-session-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.4);
}
.home-session-border {
  position: absolute;
  inset: 0;
  padding: 1px;
  border-radius: inherit;
  background: conic-gradient(
    from var(--home-session-angle, 0deg),
    rgba(212, 168, 83, 0.05),
    rgba(212, 168, 83, 0.95),
    rgba(110, 231, 183, 0.9),
    rgba(212, 168, 83, 0.05) 35%,
    rgba(212, 168, 83, 0.05) 100%
  );
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  animation: homeSessionBorder 3.2s linear infinite;
  pointer-events: none;
  z-index: 4;
}
@property --home-session-angle {
  syntax: "<angle>";
  initial-value: 0deg;
  inherits: false;
}
@keyframes homeSessionBorder {
  to { --home-session-angle: 360deg; }
}
.home-session-scan {
  position: absolute;
  left: -10%;
  top: 0;
  width: 28%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(110, 231, 183, 0.12), transparent);
  animation: homeSessionScan 4.5s ease-in-out infinite;
  pointer-events: none;
  z-index: 2;
}
@keyframes homeSessionScan {
  0%, 12% { transform: translateX(0); opacity: 0; }
  18% { opacity: 1; }
  55% { transform: translateX(380%); opacity: 0.7; }
  70%, 100% { transform: translateX(420%); opacity: 0; }
}
.home-session-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.4;
  background-image:
    linear-gradient(rgba(110, 231, 183, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(110, 231, 183, 0.07) 1px, transparent 1px);
  background-size: 24px 24px;
  animation: homeSessionGrid 18s linear infinite;
  mask-image: linear-gradient(90deg, #000 15%, transparent 88%);
  z-index: 0;
}
@keyframes homeSessionGrid {
  from { background-position: 0 0; }
  to { background-position: 24px 0; }
}
.home-session-code {
  position: relative;
  z-index: 1;
  display: grid;
  place-content: center;
  width: 92px;
  height: 92px;
  border: 1px solid rgba(212, 168, 83, 0.45);
  background: rgba(0, 0, 0, 0.28);
  text-align: center;
  box-shadow: inset 0 0 0 1px rgba(110, 231, 183, 0.08);
}
.home-session-code-lab {
  display: block;
  font-size: 9px;
  letter-spacing: 0.18em;
  color: rgba(232, 245, 239, 0.5);
  margin-bottom: 4px;
}
.home-session-code strong {
  font-family: "Noto Serif SC", "Playfair Display", serif;
  font-size: 1.85rem;
  font-weight: 800;
  line-height: 1;
  color: #d4a853;
  text-shadow: 0 0 18px rgba(212, 168, 83, 0.35);
  animation: homeSessionPulse 2.8s ease-in-out infinite;
}
@keyframes homeSessionPulse {
  0%, 100% { opacity: 1; filter: brightness(1); }
  50% { opacity: 0.88; filter: brightness(1.15); }
}
.home-session-live {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  margin-top: 6px;
  font-size: 9px;
  letter-spacing: 0.16em;
  color: #6ee7b7;
  font-weight: 700;
}
.home-session-live i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #6ee7b7;
  box-shadow: 0 0 0 0 rgba(110, 231, 183, 0.55);
  animation: homeSessionLive 1.6s ease-out infinite;
}
@keyframes homeSessionLive {
  0% { box-shadow: 0 0 0 0 rgba(110, 231, 183, 0.5); }
  70% { box-shadow: 0 0 0 7px rgba(110, 231, 183, 0); }
  100% { box-shadow: 0 0 0 0 rgba(110, 231, 183, 0); }
}
.home-session-copy {
  position: relative;
  z-index: 1;
  min-width: 0;
  overflow: hidden;
}
.home-session-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: #6ee7b7;
}
.home-session-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #6ee7b7;
  animation: homeSessionLive 1.6s ease-out infinite;
}
.home-session-title {
  display: block;
  font-family: "Noto Serif SC", "Playfair Display", serif;
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.35;
  margin-bottom: 10px;
}
.home-session-ticker {
  display: block;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
}
.home-session-ticker-track {
  display: flex;
  width: max-content;
  gap: 0;
  animation: homeSessionMarquee 18s linear infinite;
}
.home-session-ticker-track > em {
  flex: 0 0 auto;
  font-style: normal;
  padding: 0 16px 0 0;
  margin-right: 16px;
  font-size: 0.9rem;
  color: rgba(232, 245, 239, 0.62);
  white-space: nowrap;
  position: relative;
}
.home-session-ticker-track > em::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  width: 3px;
  height: 3px;
  margin-top: -1.5px;
  border-radius: 50%;
  background: rgba(212, 168, 83, 0.7);
}
.home-session-cta {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border: 1px solid rgba(212, 168, 83, 0.5);
  color: #d4a853;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  white-space: nowrap;
  background: rgba(0, 0, 0, 0.2);
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.home-session-card:hover .home-session-cta {
  background: rgba(212, 168, 83, 0.16);
  color: #f0d78a;
  box-shadow: 0 0 20px rgba(212, 168, 83, 0.18);
}
.home-session-cta i {
  font-size: 12px;
  transition: transform 0.2s ease;
}
.home-session-card:hover .home-session-cta i {
  transform: translateX(4px);
}
.home-session-gate:hover .home-session-marquee-track,
.home-session-gate:hover .home-session-ticker-track {
  animation-play-state: paused;
}
@media (max-width: 720px) {
  .home-session-gate { padding: 8px 16px 24px; }
  .home-session-card {
    grid-template-columns: auto 1fr;
    gap: 16px;
    padding: 18px 16px;
  }
  .home-session-code { width: 72px; height: 72px; }
  .home-session-code strong { font-size: 1.45rem; }
  .home-session-live { display: none; }
  .home-session-cta {
    grid-column: 1 / -1;
    justify-content: center;
  }
}
@media (prefers-reduced-motion: reduce) {
  .home-session-marquee-track,
  .home-session-ticker-track,
  .home-session-border,
  .home-session-scan,
  .home-session-grid,
  .home-session-code strong,
  .home-session-live i,
  .home-session-badge-dot {
    animation: none !important;
  }
  .home-session-ticker-track {
    flex-wrap: wrap;
    width: auto;
    gap: 8px 14px;
  }
  .home-session-ticker-track > em::after { display: none; }
}