:root{--build-id:"c38bce5b-c2fc-4081-bd90-cc3aaa7e5a03";}
@charset "UTF-8";

/* ========== CSS Variables (C27: Indigo) ========== */
:root {
  --primary: #6366f1;
  --bg: #eef2ff;
  --text: #312e81;
  --accent: #818cf8;
  --heading: var(--text);
  --link: var(--text);
}

/* ========== Font System (F3: Windows Core) ========== */
body {
  font-family: "Segoe UI", "Malgun Gothic", "Noto Sans KR", -apple-system, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  font-weight: 400;
  letter-spacing: 0em;
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
}

/* ========== Headings (H13: 3.125rem, 600, 1.25) ========== */
h1 {
  font-size: clamp(2rem, 5vw, 3.125rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0;
  color: var(--heading);
  margin: 0 0 1.5rem 0;
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.344rem);
  font-weight: 600;
  line-height: 1.3;
  color: var(--heading);
  margin: 0 0 1.25rem 0;
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.758rem);
  font-weight: 600;
  line-height: 1.4;
  color: var(--heading);
  margin: 0 0 1rem 0;
}

/* ========== Skip Link ========== */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: #000;
  color: #fff;
  padding: 8px 16px;
  text-decoration: none;
  z-index: 100;
}

.skip-link:focus {
  top: 0;
  outline: 3px solid #0066cc;
  outline-offset: 2px;
}

/* ========== Focus Styles ========== */
a:focus-visible,
input:focus-visible,
label:focus-visible {
  outline: 3px solid #0066cc;
  outline-offset: 2px;
}

/* ========== Header (N05: Transparent + Left Logo + Right Menu+CTA) ========== */
header {
  background: rgba(238, 242, 255, 0.95);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(99, 102, 241, 0.1);
}

.header-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}

.menu-checkbox {
  display: none;
}

.menu-toggle {
  display: none;
  font-size: 1.75rem;
  cursor: pointer;
  color: var(--primary);
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 2rem;
  align-items: center;
}

nav a {
  text-decoration: none;
  color: var(--link);
  font-weight: 500;
  transition: color 0.3s;
  border-bottom: 3px solid transparent;
  padding-bottom: 0.25rem;
}

nav a:hover,
nav a[aria-current="page"] {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s;
  }

  .menu-checkbox:checked ~ nav {
    max-height: 500px;
  }

  nav ul {
    flex-direction: column;
    gap: 0;
    padding: 1rem 0;
  }

  nav li {
    width: 100%;
    text-align: center;
  }

  nav a {
    display: block;
    padding: 1rem 2rem;
    border-bottom: none;
  }
}

/* ========== Container & Sections (S01: 5rem, 1280px, 3rem) ========== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 5rem 0;
}

.content-grid,
.feature-list,
.benefits-grid,
.mission-grid,
.tips-grid,
.health-grid,
.stats-grid {
  display: grid;
  gap: 3rem;
}

/* ========== Hero Section (L07: Overlay Hero) ========== */
.hero-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: white;
  padding: 6rem 0;
  position: relative;
  overflow: hidden;
}

.hero-overlay {
  position: relative;
  z-index: 1;
}

.hero-section h1 {
  color: white;
  margin-bottom: 1.5rem;
}

.hero-text {
  font-size: 1.125rem;
  line-height: 1.8;
  margin-bottom: 2rem;
  max-width: 800px;
}

.hero-icon {
  position: absolute;
  right: 10%;
  top: 50%;
  transform: translateY(-50%);
  width: 200px;
  height: 200px;
  opacity: 0.2;
}

/* ========== Buttons (B13: Border-bottom, uppercase) ========== */
.cta-button {
  display: inline-block;
  border: none;
  border-bottom: 3px solid white;
  background: transparent;
  color: white;
  padding: 0.75rem 0;
  font-weight: 700;
  text-transform: uppercase;
  text-decoration: none;
  transition: all 0.3s;
  margin-right: 1rem;
  letter-spacing: 0.05em;
}

.cta-button:hover {
  border-bottom-color: var(--accent);
  transform: translateY(-2px);
}

.cta-button.secondary {
  border-bottom-color: rgba(255, 255, 255, 0.5);
}

.cta-buttons {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

/* ========== Cards (K13: Box Shadow 4px 4px) ========== */
.card,
.benefit-card,
.mission-card,
.tip-card,
.health-card,
.stat-card,
.review-card {
  background: white;
  border-radius: 0.5rem;
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.1);
  padding: 2rem;
  transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover,
.benefit-card:hover,
.mission-card:hover,
.tip-card:hover,
.health-card:hover,
.stat-card:hover,
.review-card:hover {
  transform: translateY(-4px);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.15);
}

.card-icon {
  font-size: 2.5rem;
  color: var(--primary);
  display: block;
  margin-bottom: 1rem;
}

/* ========== Content Sections ========== */
.intro-section {
  background: white;
}

.content-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.features-section {
  background: var(--bg);
}

.feature-list {
  grid-template-columns: 1fr;
}

.feature-item {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
}

.feature-svg {
  width: 80px;
  height: 80px;
  flex-shrink: 0;
}

.feature-text h3 {
  margin-top: 0;
}

.benefits-section {
  background: white;
}

.benefits-grid {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* ========== CTA Section ========== */
.cta-section {
  background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
  color: white;
  text-align: center;
}

.cta-section h2 {
  color: white;
}

.cta-section .cta-buttons {
  justify-content: center;
}

.cta-section .cta-button {
  color: white;
}

/* ========== Page Header ========== */
.page-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: white;
  padding: 4rem 0 3rem 0;
  text-align: center;
}

.page-header h1 {
  color: white;
  margin-bottom: 1rem;
}

.header-description {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.9);
  max-width: 600px;
  margin: 0 auto;
}

/* ========== Text Content ========== */
.text-content,
.guide-content,
.approach-content,
.brain-content,
.mental-content,
.practice-content,
.benefit-detail {
  max-width: 800px;
  margin: 0 auto;
}

.text-content p,
.brain-content p,
.mental-content p,
.practice-content p {
  margin-bottom: 1.5rem;
}

/* ========== Mission Grid ========== */
.mission-grid {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ========== Approach Section ========== */
.approach-item {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  margin-bottom: 2rem;
}

.approach-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  flex-shrink: 0;
}

/* ========== Guide Steps ========== */
.guide-step {
  background: white;
  padding: 2rem;
  margin-bottom: 2rem;
  border-left: 4px solid var(--primary);
  border-radius: 0.25rem;
}

/* ========== Tips Grid ========== */
.tips-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* ========== Mistakes Section ========== */
.mistakes-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.mistake-item {
  background: white;
  padding: 1.5rem;
  border-radius: 0.5rem;
  box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.08);
}

.mistake-item h3 {
  color: #dc2626;
  margin-bottom: 0.75rem;
}

/* ========== Benefits Detail ========== */
.benefit-item {
  margin-bottom: 3rem;
}

/* ========== Health Grid ========== */
.health-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* ========== Stats Grid ========== */
.stats-grid {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.stat-icon {
  font-size: 3rem;
  color: var(--primary);
  display: block;
  margin-bottom: 1rem;
}

/* ========== Reviews ========== */
.review-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.review-header {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1rem;
}

.reviewer-name {
  font-weight: 700;
  color: var(--primary);
}

.reviewer-tag {
  background: var(--bg);
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.875rem;
  color: var(--text);
}

.review-text {
  line-height: 1.8;
}

/* ========== FAQ ========== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.faq-item {
  background: white;
  padding: 2rem;
  border-radius: 0.5rem;
  box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.08);
}

.faq-item h3 {
  color: var(--primary);
  margin-bottom: 0.75rem;
}

.faq-item p {
  margin: 0;
}

/* ========== Contact ========== */
.contact-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
}

.contact-info,
.contact-message {
  background: white;
  padding: 2rem;
  border-radius: 0.5rem;
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.1);
}

.info-item {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  margin-bottom: 2rem;
}

.info-icon {
  font-size: 2rem;
  color: var(--primary);
  flex-shrink: 0;
}

.info-text h3 {
  margin-bottom: 0.5rem;
}

.info-text p {
  margin: 0;
}

.contact-svg {
  width: 150px;
  height: 150px;
  margin: 2rem auto 0;
  display: block;
}

.info-section {
  background: white;
  text-align: center;
}

/* ========== Document Container (Privacy/Terms) ========== */
.doc-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 4rem 2rem;
  text-align: center;
}

.doc-container h1 {
  margin-bottom: 2rem;
}

.doc-container p {
  margin-bottom: 1.5rem;
}

.doc-container a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  border-bottom: 2px solid var(--primary);
  padding-bottom: 0.25rem;
}

/* ========== Footer ========== */
footer {
  background: var(--text);
  color: rgba(255, 255, 255, 0.8);
  padding: 2rem 0;
  text-align: center;
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

.footer-container p {
  margin: 0 0 1rem 0;
}

.footer-container nav {
  display: flex;
  justify-content: center;
  gap: 2rem;
}

.footer-container a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.3s;
}

.footer-container a:hover {
  color: white;
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
  section {
    padding: 3rem 0;
  }

  .hero-section {
    padding: 4rem 0;
  }

  .hero-icon {
    display: none;
  }

  .feature-item {
    flex-direction: column;
  }

  .approach-item {
    flex-direction: column;
  }

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

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .cta-button {
    margin-right: 0;
  }
}