.top-bar {
  position: sticky;
  top: var(--space-0);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: calc(var(--space-7) + var(--space-2));
  padding: var(--space-0) var(--space-8);
  background: color-mix(in srgb, var(--bg-primary) 94%, transparent);
  border-bottom: var(--border-thin) solid var(--border-default);
  backdrop-filter: blur(var(--space-2));
}

body {
  overflow-x: hidden;
}

.brand,
.top-nav {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.brand-mark {
  color: var(--accent-gold);
  font-size: var(--text-sm);
}

.brand-text {
  color: var(--text-primary);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0;
}

.teacher-link {
  display: inline-flex;
  min-height: var(--space-7);
  align-items: center;
  color: var(--text-tertiary);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0;
  transition:
    color var(--duration-fast) var(--ease-default),
    transform var(--duration-fast) var(--ease-default);
}

.teacher-link:hover {
  color: var(--accent-gold);
  transform: translateY(calc(var(--space-1) * -1));
}

.hero {
  display: grid;
  min-height: 42vh;
  place-items: center;
  padding: var(--space-8) var(--space-8) var(--space-6);
}

.teacher-hero {
  min-height: 36vh;
}

.hero-inner {
  display: flex;
  width: min(100%, var(--container-xl));
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-5);
}

.tracy-signature {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  border: var(--border-thin) solid color-mix(in srgb, var(--accent-gold) 56%, transparent);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--accent-gold) 16%, transparent);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0;
  opacity: 0;
  transform: translateY(var(--space-3));
  animation: fade-rise var(--duration-slow) var(--ease-out) 220ms forwards;
}

.signature-name {
  color: var(--accent-gold);
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
}

.signature-divider {
  width: 1px;
  height: 16px;
  background: color-mix(in srgb, var(--accent-gold) 52%, transparent);
}

.hero-title {
  display: flex;
  flex-wrap: wrap;
  margin: var(--space-0);
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  font-weight: 600;
  line-height: var(--leading-hero);
  letter-spacing: 0;
}

.hero-char {
  display: inline-block;
  opacity: 0;
  transform: translateY(var(--space-4));
  animation: char-rise var(--duration-deliberate) var(--ease-out) forwards;
  animation-delay: var(--delay);
}

.hero-sub {
  max-width: var(--container-sm);
  margin: var(--space-0);
  color: var(--text-secondary);
  font-size: var(--text-lg);
  line-height: var(--leading-normal);
  letter-spacing: 0;
  opacity: 0;
  transform: translateY(var(--space-3));
  animation: fade-rise var(--duration-slow) var(--ease-out) 420ms forwards;
}

.page-section {
  max-width: var(--container-xl);
  margin: var(--space-0) auto;
  padding: var(--space-6) var(--space-8) var(--space-9);
}

.reveal {
  opacity: 1;
  transform: translateY(var(--space-0));
}

.reveal.js-armed {
  opacity: 0;
  transform: translateY(var(--space-5));
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.reveal.js-armed.is-visible {
  opacity: 1;
  transform: translateY(var(--space-0));
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-5);
}

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

.tool-card {
  position: relative;
  display: grid;
  min-height: 260px;
  align-content: start;
  gap: var(--space-4);
  overflow: hidden;
}

.tool-card::before {
  position: absolute;
  inset: var(--space-0) auto var(--space-0) var(--space-0);
  width: var(--space-1);
  background: var(--accent-gold);
  content: "";
  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-default);
}

.tool-card:hover::before {
  opacity: 1;
}

.tool-tag {
  display: inline-flex;
  width: fit-content;
  min-height: 28px;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  border: var(--border-thin) solid var(--border-accent);
  border-radius: var(--radius-sm);
  background: var(--badge-bg);
  color: var(--accent-gold);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0;
}

.tool-card h2 {
  margin: var(--space-2) var(--space-0) var(--space-0);
  color: var(--text-primary);
  font-size: var(--text-xl);
  font-weight: 500;
  line-height: var(--leading-snug);
  letter-spacing: 0;
}

.tool-card p {
  margin: var(--space-0);
  color: var(--text-secondary);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  letter-spacing: 0;
}

.path-text {
  align-self: end;
  margin-top: auto;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.card-cta {
  position: absolute;
  right: var(--space-5);
  bottom: var(--space-5);
  color: var(--accent-gold);
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  line-height: 1;
  transition: transform var(--duration-fast) var(--ease-default);
}

.tool-card:hover .card-cta {
  transform: translateX(var(--space-1));
}

.orientation-strip {
  display: flex;
  max-width: var(--container-xl);
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  padding-top: var(--space-0);
  padding-bottom: var(--space-5);
}

.orientation-copy {
  max-width: var(--container-md);
}

.orientation-copy h2,
.orientation-rule h2 {
  margin: var(--space-3) var(--space-0) var(--space-2);
  color: var(--text-primary);
  font-size: var(--text-2xl);
  font-weight: 500;
  line-height: var(--leading-snug);
  letter-spacing: 0;
}

.orientation-copy p,
.orientation-rule p {
  margin: var(--space-0);
  color: var(--text-secondary);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  letter-spacing: 0;
}

.orientation-cta,
.route-next {
  display: inline-flex;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: var(--border-thin) solid var(--accent-gold);
  border-radius: var(--radius-sm);
  background: var(--accent-gold);
  color: var(--black-ink);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0;
  transition:
    background var(--duration-fast) var(--ease-default),
    transform var(--duration-fast) var(--ease-default);
  white-space: nowrap;
}

.orientation-cta {
  padding: var(--space-3) var(--space-5);
}

.orientation-cta:hover,
.route-card:hover .route-next {
  background: var(--accent-gold-hover);
  transform: translateY(calc(var(--space-1) * -1));
}

.orientation-hero {
  min-height: 32vh;
}

.orientation-map {
  padding-top: var(--space-0);
}

.route-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-5);
}

.route-card {
  display: grid;
  min-height: 280px;
  align-content: start;
  gap: var(--space-4);
  padding: var(--space-5);
  border: var(--border-thin) solid var(--border-default);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  transition:
    border-color var(--duration-base) var(--ease-default),
    transform var(--duration-base) var(--ease-default);
}

.route-card:hover {
  border-color: var(--border-accent);
  transform: translateY(calc(var(--space-1) * -1));
}

.route-major {
  background: color-mix(in srgb, var(--bg-secondary) 86%, var(--accent-gold) 14%);
}

.route-icon {
  display: inline-flex;
  width: fit-content;
  min-height: 28px;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  border: var(--border-thin) solid var(--border-accent);
  border-radius: var(--radius-sm);
  color: var(--accent-gold);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 600;
}

.route-card h2 {
  margin: var(--space-1) var(--space-0) var(--space-0);
  color: var(--text-primary);
  font-size: var(--text-xl);
  font-weight: 500;
  line-height: var(--leading-snug);
  letter-spacing: 0;
}

.route-card p {
  margin: var(--space-0);
  color: var(--text-secondary);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  letter-spacing: 0;
}

.route-next {
  align-self: end;
  width: fit-content;
  margin-top: auto;
  padding: var(--space-2) var(--space-4);
}

.orientation-rule {
  max-width: var(--container-xl);
  border-top: var(--border-thin) solid var(--border-default);
}

.site-footer {
  max-width: var(--container-xl);
  margin: var(--space-0) auto;
  padding: var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  color: var(--text-tertiary);
  font-size: var(--text-xs);
  letter-spacing: 0;
}

.footer-signature {
  color: var(--accent-gold);
  font-weight: 700;
}

@keyframes fade-rise {
  from {
    opacity: 0;
    transform: translateY(var(--space-3));
  }
  to {
    opacity: 1;
    transform: translateY(var(--space-0));
  }
}

@keyframes char-rise {
  from {
    opacity: 0;
    transform: translateY(var(--space-4));
  }
  to {
    opacity: 1;
    transform: translateY(var(--space-0));
  }
}

@media (max-width: 1180px) {
  .tool-grid,
  .teacher-grid,
  .route-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .top-bar {
    padding: var(--space-3) var(--space-4);
  }

  .brand-text,
  .teacher-link {
    font-size: var(--text-sm);
  }

  .hero,
  .teacher-hero {
    min-height: auto;
    padding: var(--space-7) var(--space-4) var(--space-5);
  }

  .hero-title {
    font-size: var(--text-4xl);
  }

  .page-section {
    padding: var(--space-5) var(--space-4) var(--space-8);
  }

  .tool-grid,
  .teacher-grid,
  .route-grid {
    grid-template-columns: 1fr;
  }

  .orientation-strip {
    align-items: stretch;
    flex-direction: column;
    padding-top: var(--space-0);
  }

  .orientation-cta {
    width: 100%;
  }

  .tool-card {
    min-height: auto;
    padding-right: var(--space-8);
  }
}

@media (max-width: 430px) {
  .top-bar {
    gap: var(--space-3);
  }

  .brand {
    min-width: var(--space-0);
  }

  .brand-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .teacher-link {
    white-space: nowrap;
  }

  .hero-title {
    font-size: var(--text-3xl);
  }

  .hero-sub {
    max-width: 100%;
    font-size: var(--text-base);
  }

  .tracy-signature {
    max-width: 100%;
    flex-wrap: wrap;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

/* 390px fallback: keep the student/teacher portal cards single-column even if an older
   cached rule or route-level CSS wins earlier in the cascade. */
@media (max-width: 768px) {
  .tool-grid,
  .teacher-grid {
    grid-template-columns: minmax(0, 1fr) !important;
  }

  .tool-card {
    width: 100%;
    min-width: 0;
  }
}

/* 2026-07-22 · 学生 Portal action-first 视觉层，仅作用于 .student-portal。 */
:root[data-theme="edu-warm"] {
  --bg-primary: #f7f1e8;
  --bg-secondary: #eee5d8;
  --bg-tertiary: #fffdf8;
  --bg-elevated: #ffffff;
  --text-primary: #263124;
  --text-secondary: #65705f;
  --text-tertiary: #8a9286;
  --border-default: #ded4c5;
  --border-strong-color: #c7b9a5;
  --border-accent: #4c6b3f;
  --accent-primary: #4c6b3f;
  --accent-warm: #d98f3b;
  --accent-gold: #d98f3b;
  --accent-gold-hover: #c97f30;
  --accent-action: #4c6b3f;
  --accent-action-hover: #3f5b35;
  --accent-action-contrast: #ffffff;
  --accent-ring: rgba(217, 143, 59, .22);
  --accent-focus: #4c6b3f;
  --badge-fg: #4c6b3f;
  --badge-bg: #e7eee2;
  --card-border-hover: rgba(76, 107, 63, .55);
}

.student-portal {
  background:
    radial-gradient(circle at 90% 4%, rgba(217, 143, 59, .13), transparent 28rem),
    linear-gradient(180deg, #faf6ef, var(--bg-primary) 58%, #f0e8dc);
}

.student-portal .top-bar {
  min-height: 66px;
  padding: 0 clamp(18px, 4vw, 56px);
  background: color-mix(in srgb, var(--bg-primary) 88%, transparent);
  border-bottom-color: rgba(90, 62, 34, .10);
}

.student-portal .brand-mark {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  color: #fff;
  background: var(--accent-primary);
  box-shadow: 0 8px 18px rgba(76, 107, 63, .18);
}

.student-portal .brand-text,
.student-portal .teacher-link {
  min-height: 44px;
  font-size: 14px;
}

.student-portal .teacher-link {
  padding: 0 15px;
  border: 1px solid var(--border-default);
  border-radius: 999px;
  background: rgba(255, 253, 248, .72);
  color: var(--text-primary);
}

.student-portal .hero {
  min-height: auto;
  padding: 38px clamp(18px, 5vw, 64px) 28px;
}

.student-portal .hero-inner {
  width: min(100%, 1180px);
  gap: 13px;
}

.portal-eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 11px;
  border-radius: 999px;
  color: var(--accent-primary);
  background: var(--badge-bg);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .08em;
}

.student-portal .hero-title {
  display: block;
  margin: 3px 0 0;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 820;
  line-height: 1.12;
  letter-spacing: -.045em;
}

.student-portal .hero-sub {
  max-width: 760px;
  margin: 0;
  color: var(--text-secondary);
  font-size: 16px;
  opacity: 1;
  transform: none;
  animation: none;
}

.quick-start-grid {
  display: grid;
  width: 100%;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.quick-action {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  align-items: center;
  gap: 11px;
  min-height: 86px;
  padding: 14px;
  border: 1px solid rgba(76, 107, 63, .16);
  border-radius: 16px;
  background: rgba(255, 253, 248, .90);
  box-shadow: 0 10px 26px rgba(76, 78, 58, .07);
  transition: transform var(--duration-fast) var(--ease-default), border-color var(--duration-fast) var(--ease-default), box-shadow var(--duration-fast) var(--ease-default);
}

.quick-action:hover {
  transform: translateY(-2px);
  border-color: var(--accent-primary);
  box-shadow: 0 15px 30px rgba(76, 107, 63, .11);
}

.quick-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 13px;
  color: #fff;
  background: var(--accent-primary);
  font-size: 17px;
  font-weight: 850;
}

.quick-action:nth-child(even) .quick-icon {
  color: var(--black-ink);
  background: var(--accent-warm);
}

.quick-action strong,
.quick-action small {
  display: block;
}

.quick-action strong {
  color: var(--text-primary);
  font-size: 15px;
  line-height: 1.35;
}

.quick-action small {
  margin-top: 4px;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.35;
}

.quick-action b {
  color: var(--accent-primary);
  font-size: 20px;
}

.student-portal .orientation-strip {
  display: block;
  max-width: 1180px;
  padding: 0 clamp(18px, 5vw, 64px) 28px;
}

.orientation-details {
  overflow: hidden;
  border: 1px solid var(--border-default);
  border-radius: 14px;
  background: rgba(255, 253, 248, .72);
}

.orientation-details summary {
  display: flex;
  min-height: 56px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 16px;
  color: var(--text-primary);
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  list-style: none;
}

.orientation-details summary::-webkit-details-marker { display: none; }
.orientation-details summary b { color: var(--accent-primary); font-size: 14px; }
.orientation-body { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 0 16px 16px; }
.orientation-body p { max-width: 760px; margin: 0; color: var(--text-secondary); font-size: 14px; line-height: 1.65; }

.student-portal .tools {
  max-width: 1180px;
  padding: 20px clamp(18px, 5vw, 64px) 76px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 20px;
}

.section-heading h2 {
  margin: 10px 0 0;
  color: var(--text-primary);
  font-size: 30px;
  line-height: 1.2;
}

.section-heading > p {
  max-width: 440px;
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
  text-align: right;
}

.student-portal .tool-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.student-portal .tool-card {
  min-height: 202px;
  gap: 12px;
  padding: 20px;
  border-width: 1px;
  border-radius: 18px;
  background: rgba(255, 253, 248, .94);
  box-shadow: 0 10px 26px rgba(76, 78, 58, .06);
}

.student-portal .tool-card::before { display: none; }
.student-portal .tool-card::after {
  content: attr(data-icon);
  position: absolute;
  top: 18px;
  right: 18px;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  color: var(--accent-primary);
  background: var(--badge-bg);
  font-size: 17px;
  font-weight: 850;
}

.student-portal .tool-card:hover {
  border-color: rgba(76, 107, 63, .55);
  box-shadow: 0 16px 34px rgba(76, 107, 63, .10);
}

.student-portal .tool-tag {
  min-height: 30px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 13px;
}

.student-portal .tool-card h2 {
  max-width: calc(100% - 48px);
  margin-top: 5px;
  font-size: 20px;
  font-weight: 720;
}

.student-portal .tool-card p {
  max-width: calc(100% - 18px);
  font-size: 14px;
}

.student-portal .card-cta {
  right: 20px;
  bottom: 18px;
  font-size: 20px;
}

.student-portal .site-footer {
  padding: 30px clamp(18px, 5vw, 64px);
  font-size: 13px;
}

@media (max-width: 980px) {
  .quick-start-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .student-portal .tool-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  .student-portal .top-bar { min-height: 62px; padding: 0 12px; }
  .student-portal .brand { gap: 8px; min-width: 0; }
  .student-portal .brand-mark { width: 30px; height: 30px; flex: 0 0 30px; }
  .student-portal .brand-text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .student-portal .teacher-link { padding: 0 11px; white-space: nowrap; }
  .student-portal .hero { padding: 22px 12px 16px; }
  .student-portal .hero-title { font-size: 34px; }
  .student-portal .hero-sub { font-size: 14px; }
  .quick-start-grid { grid-template-columns: 1fr; gap: 9px; margin-top: 8px; }
  .quick-action { min-height: 72px; padding: 10px 12px; }
  .quick-icon { width: 40px; height: 40px; }
  .quick-action small { font-size: 13px; }
  .student-portal .orientation-strip { padding: 0 12px 18px; }
  .orientation-details summary { align-items: flex-start; flex-direction: column; gap: 2px; padding: 12px 14px; }
  .orientation-body { align-items: stretch; flex-direction: column; padding: 0 14px 14px; }
  .orientation-cta { width: 100%; }
  .student-portal .tools { padding: 16px 12px 52px; }
  .section-heading { align-items: flex-start; flex-direction: column; gap: 7px; }
  .section-heading h2 { font-size: 25px; }
  .section-heading > p { text-align: left; }
  .student-portal .tool-grid { grid-template-columns: minmax(0, 1fr) !important; }
  .student-portal .tool-card { min-height: 178px; padding: 18px; }
}