/* Hallmark · pre-emit critique: P5 H5 E5 S5 R5 V4
 * Hallmark · genre: professional-education · macrostructure: Conversational FAQ
 * design-system: design.md · designed-as-app · theme: Hangsu blue
 * honest: pass · chrome: pass · tokens: pass · mobile: pass
 */

:root {
  --course-paper: #f7f9fc;
  --course-surface: #ffffff;
  --course-ink: #111c31;
  --course-ink-soft: #42526b;
  --course-rule: #dce4ef;
  --course-accent: #2563eb;
  --course-accent-dark: #1747b0;
  --course-accent-soft: #eaf1ff;
  --course-hero: #0b1930;
  --course-hero-soft: #132846;
  --course-on-dark: #f7fbff;
  --course-on-dark-soft: #c8d5e6;
  --course-focus: #f59e0b;
  --course-success: #176b45;
  --course-shadow: 0 18px 48px rgba(10, 30, 60, 0.12);
  --course-on-dark-rule: rgba(247, 251, 255, 0.18);
  --course-on-dark-rule-medium: rgba(247, 251, 255, 0.22);
  --course-on-dark-rule-strong: rgba(247, 251, 255, 0.34);
  --course-on-dark-rule-tag: rgba(247, 251, 255, 0.26);
  --course-radius-sm: 10px;
  --course-radius-md: 18px;
  --course-radius-lg: 28px;
  --course-space-2xs: 0.5rem;
  --course-space-xs: 0.75rem;
  --course-space-sm: 1rem;
  --course-space-md: 1.5rem;
  --course-space-lg: 2rem;
  --course-space-xl: 3rem;
  --course-space-2xl: 4.5rem;
  --course-space-3xl: 6.5rem;
  --course-ease: cubic-bezier(0.16, 1, 0.3, 1);
  --course-duration: 220ms;
}

html,
body.course-page {
  overflow-x: clip;
}

body.course-page {
  background: var(--course-paper);
  color: var(--course-ink);
}

.course-page .parallax-background {
  display: none;
}

.course-detail-main {
  background: var(--course-paper);
}

.course-detail-wrap {
  width: min(1180px, calc(100% - 2rem));
  margin-inline: auto;
}

.course-reading-width {
  max-width: 920px;
}

.course-detail-hero {
  padding-block: clamp(9.5rem, 14vw, 12rem) clamp(4.5rem, 8vw, 7rem);
  background: var(--course-hero);
  color: var(--course-on-dark);
  position: relative;
  isolation: isolate;
}

.course-detail-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: var(--course-rule);
  opacity: 0.2;
}

.course-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--course-space-2xs);
  margin-block-end: clamp(2rem, 5vw, 4rem);
  color: var(--course-on-dark-soft);
  font-size: 0.875rem;
}

.course-breadcrumb a,
.course-breadcrumb span {
  color: inherit;
  text-decoration: none;
  white-space: nowrap;
}

.course-breadcrumb a:hover {
  color: var(--course-on-dark);
}

.course-breadcrumb a:focus-visible,
.course-button:focus-visible,
.course-phone:focus-visible,
.course-question-list summary:focus-visible {
  outline: 3px solid var(--course-focus);
  outline-offset: 4px;
}

.course-hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}

.course-hero-copy {
  min-width: 0;
}

.course-labels {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--course-space-2xs);
  padding: 0;
  margin: 0 0 var(--course-space-md);
}

.course-labels li {
  padding: 0.42rem 0.75rem;
  border: 1px solid var(--course-on-dark-rule-tag);
  border-radius: 999px;
  color: var(--course-on-dark-soft);
  font-size: 0.8125rem;
  line-height: 1;
  white-space: nowrap;
}

.course-hero-copy h1 {
  margin: 0;
  color: var(--course-on-dark);
  font-size: clamp(2.35rem, 5.2vw, 4.8rem);
  line-height: 1.06;
  letter-spacing: -0.035em;
  text-wrap: balance;
  overflow-wrap: anywhere;
  min-width: 0;
}

.course-hero-summary {
  max-width: 38rem;
  margin: var(--course-space-md) 0 0;
  color: var(--course-on-dark-soft);
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  line-height: 1.85;
  text-wrap: pretty;
}

.course-facts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--course-space-sm) clamp(1.5rem, 4vw, 3rem);
  margin: var(--course-space-xl) 0 0;
}

.course-facts div {
  min-width: 8rem;
}

.course-facts dt {
  margin-block-end: 0.35rem;
  color: var(--course-on-dark-soft);
  font-size: 0.75rem;
}

.course-facts dd {
  margin: 0;
  color: var(--course-on-dark);
  font-size: 1rem;
  font-weight: 700;
}

.course-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--course-space-xs);
  margin-block-start: var(--course-space-xl);
}

.course-button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.35rem;
  border: 1px solid transparent;
  border-radius: var(--course-radius-sm);
  font: inherit;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition:
    transform var(--course-duration) var(--course-ease),
    background-color var(--course-duration) var(--course-ease),
    border-color var(--course-duration) var(--course-ease);
}

.course-button-primary {
  background: var(--course-accent);
  color: var(--course-on-dark);
}

.course-button-primary:hover {
  background: var(--course-accent-dark);
  transform: translateY(-1px);
}

.course-button-secondary {
  border-color: var(--course-on-dark-rule-strong);
  background: transparent;
  color: var(--course-on-dark);
}

.course-button-secondary:hover {
  border-color: var(--course-on-dark);
}

.course-trust-note {
  margin: var(--course-space-md) 0 0;
  color: var(--course-on-dark-soft);
  font-size: 0.8125rem;
  line-height: 1.6;
}

.course-hero-visual {
  min-width: 0;
}

.course-hero-visual figure {
  margin: 0;
  overflow: hidden;
  border-radius: var(--course-radius-lg) var(--course-radius-lg) 0 0;
  background: var(--course-hero-soft);
}

.course-hero-visual img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.course-hero-visual figcaption {
  padding: var(--course-space-sm) var(--course-space-md);
  color: var(--course-on-dark-soft);
  font-size: 0.8125rem;
}

.course-price-summary {
  display: flex;
  justify-content: space-between;
  gap: var(--course-space-md);
  align-items: center;
  padding: var(--course-space-md);
  border-radius: 0 0 var(--course-radius-lg) var(--course-radius-lg);
  background: var(--course-surface);
  color: var(--course-ink);
  box-shadow: var(--course-shadow);
}

.course-price-summary > div {
  flex-shrink: 0;
}

.course-price-summary span {
  display: block;
  margin-block-end: 0.25rem;
  color: var(--course-ink-soft);
  font-size: 0.75rem;
}

.course-price-summary strong {
  display: block;
  color: var(--course-accent-dark);
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  line-height: 1;
}

.course-price-summary p {
  max-width: 16rem;
  margin: 0;
  color: var(--course-ink-soft);
  font-size: 0.8125rem;
  line-height: 1.55;
  text-align: end;
}

.course-interview {
  padding-block: clamp(4.5rem, 9vw, 7.5rem);
  background: var(--course-surface);
}

.course-section-heading {
  display: flex;
  flex-direction: column;
  gap: var(--course-space-sm);
  margin-block-end: var(--course-space-xl);
}

.course-section-heading h2,
.course-spotlight-intro h2,
.course-contact-copy h2 {
  margin: 0;
  color: var(--course-ink);
  font-size: clamp(2rem, 4vw, 3.35rem);
  line-height: 1.12;
  letter-spacing: -0.025em;
  text-wrap: balance;
  overflow-wrap: anywhere;
  min-width: 0;
}

.course-section-heading p,
.course-spotlight-intro p {
  max-width: 42rem;
  margin: 0;
  color: var(--course-ink-soft);
  line-height: 1.8;
}

.course-question-list {
  border-block-start: 1px solid var(--course-rule);
}

.course-question-list details {
  border-block-end: 1px solid var(--course-rule);
}

.course-question-list summary {
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--course-space-md);
  align-items: center;
  padding-block: clamp(1.4rem, 3vw, 2.1rem);
  color: var(--course-ink);
  font-size: clamp(1.2rem, 2.4vw, 1.75rem);
  font-weight: 750;
  cursor: pointer;
}

.course-question-list summary::-webkit-details-marker {
  display: none;
}

.course-question-list summary::after {
  content: "+";
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--course-rule);
  border-radius: 50%;
  color: var(--course-accent-dark);
  font-size: 1.2rem;
  font-weight: 500;
  transition: transform var(--course-duration) var(--course-ease);
}

.course-question-list details[open] summary::after {
  transform: rotate(45deg);
}

.course-answer {
  max-width: 46rem;
  padding: 0 0 var(--course-space-lg);
  color: var(--course-ink-soft);
  line-height: 1.8;
}

.course-answer p {
  margin: 0;
  text-wrap: pretty;
}

.course-answer ul {
  margin: 0;
  padding-inline-start: 1.25rem;
}

.course-answer li + li {
  margin-block-start: 0.65rem;
}

.course-answer li::marker {
  color: var(--course-accent);
}

.course-spotlight {
  padding-block: clamp(4.5rem, 9vw, 7.5rem);
  background: var(--course-paper);
}

.course-spotlight-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(2.5rem, 7vw, 6.5rem);
  align-items: start;
}

.course-spotlight-intro {
  position: sticky;
  top: 9rem;
}

.course-spotlight-intro p {
  margin-block-start: var(--course-space-md);
}

.course-topic-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-block-start: 1px solid var(--course-rule);
}

.course-topic {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--course-space-md);
  padding-block: var(--course-space-lg);
  border-block-end: 1px solid var(--course-rule);
}

.course-topic-index {
  color: var(--course-accent);
  font-size: 0.8125rem;
  font-weight: 800;
}

.course-topic h3 {
  margin: 0;
  color: var(--course-ink);
  font-size: 1.25rem;
  line-height: 1.35;
  overflow-wrap: anywhere;
  min-width: 0;
}

.course-topic p {
  margin: var(--course-space-2xs) 0 0;
  color: var(--course-ink-soft);
  line-height: 1.75;
}

.course-contact {
  padding-block: clamp(4.5rem, 8vw, 7rem);
  background: var(--course-hero);
  color: var(--course-on-dark);
}

.course-contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(2.5rem, 7vw, 6rem);
  align-items: center;
}

.course-contact-copy h2 {
  color: var(--course-on-dark);
}

.course-contact-copy p {
  max-width: 34rem;
  margin: var(--course-space-md) 0;
  color: var(--course-on-dark-soft);
  line-height: 1.8;
  text-wrap: pretty;
}

.course-phone {
  display: inline-block;
  color: var(--course-on-dark);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.course-contact-form {
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--course-on-dark-rule);
  border-radius: var(--course-radius-md);
  background: var(--course-hero-soft);
}

.course-form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--course-space-sm);
}

.course-contact-form .form-group + .form-group {
  margin-block-start: var(--course-space-sm);
}

.course-form-row .form-group + .form-group {
  margin-block-start: 0;
}

.course-contact-form .form-label {
  color: var(--course-on-dark);
}

.course-contact-form .form-input,
.course-contact-form .form-select {
  width: 100%;
  min-height: 48px;
  border-color: var(--course-on-dark-rule-medium);
  background: var(--course-surface);
  color: var(--course-ink);
}

.course-contact-form .form-input::placeholder {
  color: var(--course-ink-soft);
  opacity: 1;
}

.course-privacy {
  display: flex;
  gap: var(--course-space-xs);
  align-items: flex-start;
  margin-block: var(--course-space-md);
  color: var(--course-on-dark-soft);
  font-size: 0.8125rem;
  line-height: 1.55;
}

.course-privacy input {
  width: 1rem;
  height: 1rem;
  margin-block-start: 0.15rem;
  accent-color: var(--course-accent);
  flex: 0 0 auto;
}

.course-submit {
  width: 100%;
}

@media (max-width: 59.99rem) {
  .course-hero-layout,
  .course-spotlight-layout,
  .course-contact-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .course-hero-visual {
    max-width: 44rem;
  }

  .course-spotlight-intro {
    position: static;
  }
}

@media (max-width: 39.99rem) {
  .course-detail-wrap {
    width: min(100% - 1.25rem, 1180px);
  }

  .course-detail-hero {
    padding-block-start: 8.5rem;
  }

  .course-hero-actions {
    flex-direction: column;
  }

  .course-button {
    width: 100%;
  }

  .course-facts {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--course-space-md);
  }

  .course-price-summary {
    align-items: flex-start;
    flex-direction: column;
  }

  .course-price-summary p {
    max-width: none;
    text-align: start;
  }

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

  .course-form-row .form-group + .form-group {
    margin-block-start: var(--course-space-sm);
  }
}

@media (hover: hover) and (pointer: fine) {
  .course-question-list summary:hover {
    color: var(--course-accent-dark);
  }
}

@media (prefers-reduced-motion: reduce) {
  .course-button,
  .course-question-list summary::after {
    transition-duration: 0.01ms;
  }

  html {
    scroll-behavior: auto;
  }
}