:root {
  --bg-main: #fef9f5;
  --bg-soft: #fff4e5;
  --surface: #ffffff;
  --surface-soft: #fff7ed;
  --text: #2f1f0f;
  --muted: rgba(68, 44, 23, 0.72);
  --accent: #ea580c;
  --accent-soft: #f97316;
  --accent-green: #059669;
  --accent-purple: #7c3aed;
  --shadow: 0 28px 70px -48px rgba(185, 94, 21, 0.5);
  --font-en: 'Poppins', 'Segoe UI', sans-serif;
  --font-cn: 'ZCOOL XiaoWei', 'STSong', serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body.theme-edu {
  font-family: var(--font-en);
  color: var(--text);
  background: linear-gradient(180deg, var(--bg-main) 0%, #fffaf1 60%, #ffffff 100%);
  line-height: 1.75;
}

.wrap {
  width: min(1160px, 92%);
  margin: 0 auto;
}

.top {
  position: sticky;
  top: 0;
  z-index: 25;
  background: rgba(255, 244, 229, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(234, 88, 12, 0.16);
}
.top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  gap: 20px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.logo-text {
  font-family: var(--font-cn);
  font-size: 20px;
  letter-spacing: 0.12em;
  color: var(--accent);
}
.menu {
  display: inline-flex;
  gap: 22px;
}
.menu a {
  text-decoration: none;
  color: rgba(120, 63, 4, 0.72);
  letter-spacing: 0.16em;
  font-size: 13px;
  text-transform: uppercase;
  font-weight: 600;
}
.menu a:hover { color: var(--accent); }
.menu-cta {
  display: inline-flex;
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px solid rgba(249, 115, 22, 0.38);
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 0.14em;
  font-weight: 600;
}

.hero {
  padding: 96px 0 72px;
}
.hero-flex {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 52px;
  align-items: start;
}
.hero-eyebrow {
  font-family: var(--font-en);
  letter-spacing: 0.3em;
  font-size: 12px;
  color: rgba(120, 63, 4, 0.6);
}
.hero-copy h1 {
  font-family: var(--font-cn);
  margin: 16px 0;
  font-size: clamp(32px, 5.4vw, 52px);
  line-height: 1.25;
  color: var(--accent);
}
.hero-copy p {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 17px;
}
.hero-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 16px;
  border: 1px solid transparent;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-decoration: none;
  font-size: 14px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.btn-solid {
  background: linear-gradient(135deg, var(--accent), var(--accent-soft));
  color: #fff;
  box-shadow: 0 22px 48px -32px rgba(234, 88, 12, 0.6);
}
.btn-solid:hover { transform: translateY(-2px); }
.btn-border {
  background: transparent;
  color: var(--accent);
  border-color: rgba(234, 88, 12, 0.36);
}
.btn-border:hover { background: rgba(251, 191, 36, 0.14); }
.btn-sm {
  padding: 10px 20px;
  font-size: 12px;
}

.hero-badges {
  list-style: none;
  padding: 0;
  margin: 0;
  display: inline-flex;
  gap: 10px;
  flex-wrap: wrap;
}
.hero-badges li {
  background: rgba(234, 88, 12, 0.1);
  border: 1px solid rgba(234, 88, 12, 0.2);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 12px;
  letter-spacing: 0.12em;
}

.hero-card {
  background: var(--surface);
  border-radius: 28px;
  padding: 32px;
  border: 1px solid rgba(234, 88, 12, 0.18);
  box-shadow: var(--shadow);
}
.hero-card h2 {
  margin: 0 0 20px;
  font-family: var(--font-cn);
  font-size: 22px;
}
.progress {
  display: grid;
  gap: 16px;
}
.progress div {
  display: grid;
  gap: 6px;
}
.progress span {
  color: rgba(68, 44, 23, 0.7);
  letter-spacing: 0.08em;
  font-size: 13px;
}
.line {
  height: 12px;
  border-radius: 999px;
  background: rgba(251, 191, 36, 0.22);
  overflow: hidden;
}
.line span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-soft));
}
.tag {
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.12em;
}
.hero-note {
  margin: 20px 0 0;
  font-size: 12px;
  color: rgba(68, 44, 23, 0.6);
}

.section {
  padding: 72px 0;
}
.section-soft {
  background: var(--bg-soft);
}
.section-head {
  margin-bottom: 36px;
}
.section-head h2 {
  margin: 0 0 12px;
  font-family: var(--font-cn);
  font-size: clamp(28px, 4.2vw, 36px);
  color: var(--accent);
}
.section-head p {
  margin: 0;
  color: var(--muted);
}

.lesson-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.lesson {
  background: var(--surface);
  border-radius: 24px;
  padding: 26px;
  border: 1px solid rgba(234, 88, 12, 0.2);
  box-shadow: 0 26px 54px -44px rgba(185, 94, 21, 0.5);
  display: grid;
  gap: 12px;
}
.lesson header {
  display: grid;
  gap: 8px;
  margin-bottom: 8px;
}
.lesson h3 {
  margin: 0;
  font-size: 18px;
  color: var(--accent);
}
.badge {
  display: inline-flex;
  padding: 4px 10px;
  background: rgba(234, 88, 12, 0.14);
  color: var(--accent);
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: 0.14em;
}
.badge-green {
  background: rgba(5, 150, 105, 0.16);
  color: var(--accent-green);
}
.badge-purple {
  background: rgba(124, 58, 237, 0.16);
  color: var(--accent-purple);
}
.lesson p {
  margin: 0;
  color: var(--muted);
}
.lesson ul {
  margin: 0;
  padding-left: 18px;
  color: rgba(68, 44, 23, 0.7);
  font-size: 14px;
  line-height: 1.6;
}

.module-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 32px;
}
.module-intro h2 {
  margin: 0 0 12px;
  font-family: var(--font-cn);
  color: var(--accent);
}
.module-intro p {
  margin: 0;
  color: var(--muted);
}
.module-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
.module-list article {
  background: var(--surface-soft);
  border-radius: 20px;
  padding: 22px;
  border: 1px solid rgba(249, 115, 22, 0.22);
  display: grid;
  gap: 10px;
}
.module-list h3 {
  margin: 0;
  font-family: var(--font-cn);
  font-size: 18px;
  color: var(--accent);
}
.module-list p {
  margin: 0;
  color: var(--muted);
}
.module-list span {
  font-size: 13px;
  color: rgba(68, 44, 23, 0.65);
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}
.tool-card {
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.22), rgba(254, 215, 170, 0.18));
  border-radius: 24px;
  padding: 26px;
  border: 1px solid rgba(249, 115, 22, 0.26);
  display: grid;
  gap: 10px;
}
.tool-card h2 {
  margin: 0;
  font-family: var(--font-cn);
  color: var(--accent);
}
.tool-card p {
  margin: 0;
  color: var(--muted);
}
.tool-item {
  background: var(--surface);
  border-radius: 20px;
  padding: 22px;
  border: 1px solid rgba(234, 88, 12, 0.18);
  display: grid;
  gap: 10px;
  box-shadow: 0 22px 46px -40px rgba(185, 94, 21, 0.48);
}
.tool-item h3 {
  margin: 0;
  font-size: 16px;
  color: var(--accent);
}
.tool-item p {
  margin: 0;
  color: var(--muted);
}
.tag {
  display: inline-flex;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(234, 88, 12, 0.14);
  color: var(--accent);
  font-size: 11px;
  letter-spacing: 0.12em;
}
.tag-green {
  background: rgba(5, 150, 105, 0.16);
  color: var(--accent-green);
}
.tag-purple {
  background: rgba(124, 58, 237, 0.2);
  color: var(--accent-purple);
}

.join {
  background: linear-gradient(135deg, rgba(255, 237, 213, 0.72), rgba(254, 243, 199, 0.72));
}
.join-flex {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
  gap: 32px;
  align-items: start;
}
.join h2 {
  margin: 0 0 12px;
  font-family: var(--font-cn);
  color: var(--accent);
}
.join p {
  margin: 0;
  color: var(--muted);
}
.join-form {
  background: var(--surface);
  border-radius: 22px;
  padding: 30px;
  border: 1px solid rgba(234, 88, 12, 0.22);
  display: grid;
  gap: 16px;
  box-shadow: 0 24px 54px -40px rgba(185, 94, 21, 0.5);
}
.join-form label {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: rgba(68, 44, 23, 0.68);
}
.join-form input,
.join-form select {
  width: 100%;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid rgba(251, 146, 60, 0.32);
  font-family: inherit;
  font-size: 15px;
}
.join-form input:focus,
.join-form select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(251, 146, 60, 0.26);
}
.form-tip {
  margin: 0;
  font-size: 12px;
  color: rgba(68, 44, 23, 0.6);
}

.faq {
  backdrop-filter: blur(12px);
}
.faq h2 {
  margin: 0 0 18px;
  font-family: var(--font-cn);
  color: var(--accent);
}
.faq details {
  background: var(--surface);
  border-radius: 18px;
  border: 1px solid rgba(234, 88, 12, 0.18);
  padding: 18px 22px;
  margin-bottom: 12px;
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
}
.faq summary::-webkit-details-marker { display: none; }
.faq p {
  margin: 12px 0 0;
  color: var(--muted);
}

.footer {
  background: rgba(255, 244, 229, 0.85);
  border-top: 1px solid rgba(234, 88, 12, 0.22);
}
.footer-inner {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: rgba(79, 41, 7, 0.64);
}
.footer nav {
  display: inline-flex;
  gap: 16px;
}
.footer a {
  text-decoration: none;
  color: rgba(79, 41, 7, 0.64);
  letter-spacing: 0.1em;
}

.cookie-banner {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 247, 237, 0.96);
  border-top: 1px solid rgba(234, 88, 12, 0.26);
  backdrop-filter: blur(16px);
  display: none;
  transform: translateY(100%);
  transition: transform 0.3s ease;
  z-index: 35;
}
.cookie-banner.show { transform: translateY(0); }
.cookie-bar {
  width: min(1040px, 94%);
  margin: 0 auto;
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.cookie-bar h3 {
  margin: 0 0 6px;
  color: var(--accent);
}
.cookie-bar p {
  margin: 0;
  color: var(--muted);
}
.cookie-buttons {
  display: inline-flex;
  gap: 10px;
  flex-wrap: wrap;
}
.cookie-close {
  background: transparent;
  border: none;
  font-size: 22px;
  color: rgba(120, 63, 4, 0.6);
  cursor: pointer;
}
.cookie-close:hover { color: var(--accent); }
.cookie-settings {
  width: min(680px, 94%);
  margin: 0 auto 20px;
  background: var(--surface);
  border-radius: 20px;
  border: 1px solid rgba(234, 88, 12, 0.22);
  padding: 22px 24px;
  display: grid;
  gap: 14px;
}
.cookie-item {
  display: grid;
  gap: 6px;
}
.cookie-item label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
}
.cookie-item p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 1080px) {
  .hero-flex { grid-template-columns: 1fr; }
  .hero-card { order: -1; }
  .lesson-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .module-layout { grid-template-columns: 1fr; }
  .module-list { grid-template-columns: 1fr 1fr; }
  .tool-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .join-flex { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .top-inner { flex-wrap: wrap; }
  .menu { width: 100%; justify-content: flex-start; flex-wrap: wrap; }
  .hero-badges { width: 100%; }
  .lesson-grid { grid-template-columns: 1fr; }
  .module-list { grid-template-columns: 1fr; }
  .tool-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 12px; }
  .cookie-bar { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 520px) {
  .hero-buttons .btn { flex: 1; min-width: 0; justify-content: center; }
  .cookie-buttons { width: 100%; }
  .cookie-buttons .btn { flex: 1; min-width: 0; justify-content: center; }
}