@import url('https://fonts.googleapis.com/css2?family=Zen+Kaku+Gothic+New:wght@400;500;700;900&display=swap');

:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f5;
  --bg-card: #ffffff;
  --bg-card-hover: #ffffff;
  --text-primary: #111111;
  --text-secondary: #555555;
  --text-muted: #888888;
  --accent-blue: #111111;
  --accent-green: #555555;
  --accent-blue-dim: #f5f5f5;
  --accent-green-dim: #f5f5f5;
  --border-color: #e0e0e0;
  --border-hover: #111111;
  --shadow-card: none;
  --shadow-hover: 0 2px 16px rgba(0, 0, 0, 0.06);
  --radius: 0px;
  --radius-lg: 0px;
  --max-width: 1280px;
  --header-height: 64px;
  --transition: 0.3s ease;
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Zen Kaku Gothic New', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 2;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--text-primary);
  text-decoration: none;
  transition: opacity var(--transition);
}

a:hover {
  opacity: 0.6;
}

img {
  max-width: 100%;
  height: auto;
}

/* ========== Header ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  border-bottom: 1px solid var(--border-color);
}

.site-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: -1;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.2rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  position: relative;
}

.logo span {
  color: var(--accent-blue);
}

.logo::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  opacity: 0.5;
}

.nav-list {
  list-style: none;
  display: flex;
  gap: 28px;
}

.nav-list a {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color var(--transition);
  position: relative;
}

.nav-list a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-blue);
  transition: width var(--transition);
}

.nav-list a:hover {
  color: var(--text-primary);
}

.nav-list a:hover::after {
  width: 100%;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1010;
  position: relative;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ========== Main ========== */
main {
  padding-top: var(--header-height);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== Hero ========== */
.hero {
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 600px;
  height: 600px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, var(--accent-blue-dim) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: 0.75rem;
  color: var(--accent-blue);
  margin-bottom: 24px;
  letter-spacing: 0.1em;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.hero p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  line-height: 1.9;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 40px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 700;
  font-family: 'Zen Kaku Gothic New', sans-serif;
  cursor: pointer;
  border: none;
  transition: opacity var(--transition);
  text-align: center;
  min-width: 180px;
  letter-spacing: 0.06em;
}

.btn-primary {
  background: var(--text-primary);
  color: #fff;
}

.btn-primary:hover {
  opacity: 0.6;
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--text-primary);
}

.btn-secondary:hover {
  opacity: 0.6;
}

.btn-green {
  background: var(--text-secondary);
  color: #fff;
}

.btn-green:hover {
  opacity: 0.6;
}

/* ========== Sections ========== */
.section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--accent-blue);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 12px;
  border: 1px solid var(--border-color);
  padding: 4px 14px;
  border-radius: 50px;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 900;
  margin-bottom: 12px;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ========== Icons ========== */
.card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
  border-radius: 10px;
  background: var(--accent-blue-dim);
}

.card-icon svg {
  width: 24px;
  height: 24px;
  fill: var(--accent-blue);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  min-width: 40px;
  border-radius: 8px;
  background: var(--accent-blue-dim);
}

.feature-icon svg {
  width: 20px;
  height: 20px;
  fill: var(--accent-blue);
}

/* ========== Cards ========== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.card-grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--text-primary);
  opacity: 0;
  transition: opacity var(--transition);
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

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

.card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.card ul {
  list-style: none;
  margin-top: 12px;
}

.card ul li {
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 4px 0;
  padding-left: 20px;
  position: relative;
}

.card ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-blue);
}

/* ========== Product Cards ========== */
.product-card {
  display: flex;
  flex-direction: column;
}

.product-badge {
  display: inline-block;
  align-self: flex-start;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  color: #fff;
  background: var(--accent-blue);
  margin-bottom: 12px;
  letter-spacing: 0.03em;
}

.product-price {
  margin-top: auto;
  padding-top: 16px;
  font-size: 1.05rem;
  font-weight: 900;
  color: var(--text-primary);
}

.product-links {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.product-link {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  transition: all var(--transition);
}

.product-link.amazon {
  background: #ff9900;
  color: #000;
}

.product-link.amazon:hover {
  background: #e68a00;
  color: #000;
  transform: translateY(-1px);
}

.product-link.aliexpress {
  background: #e43a2f;
  color: #fff;
}

.product-link.aliexpress:hover {
  background: #c8322a;
  color: #fff;
  transform: translateY(-1px);
}

.product-link.official {
  background: var(--bg-secondary);
  color: var(--accent-blue);
  border: 1px solid var(--border-color);
}

.product-link.official:hover {
  border-color: var(--accent-blue);
  background: var(--accent-blue-dim);
  color: var(--accent-blue);
  transform: translateY(-1px);
}

/* ========== CTA ========== */
.cta-section {
  text-align: center;
  padding: 80px 0;
}

.cta-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  max-width: 600px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--text-primary);
}

.cta-box h2 {
  font-size: 1.5rem;
  font-weight: 900;
  margin-bottom: 12px;
}

.cta-box p {
  color: var(--text-secondary);
  margin-bottom: 28px;
  font-size: 0.95rem;
}

/* ========== Timeline ========== */
.timeline {
  position: relative;
  padding: 40px 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 28px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
  padding-left: 72px;
  margin-bottom: 48px;
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.timeline-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.timeline-dot {
  position: absolute;
  left: 18px;
  top: 4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px solid var(--accent-blue);
  z-index: 1;
}

.timeline-dot::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-blue);
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: all var(--transition);
}

.timeline-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
}

.timeline-step {
  font-size: 0.75rem;
  color: var(--accent-blue);
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.timeline-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.timeline-card ul {
  list-style: none;
  margin-bottom: 16px;
}

.timeline-card ul li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding: 3px 0 3px 20px;
  position: relative;
}

.timeline-card ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-blue);
}

.timeline-goal {
  display: inline-block;
  background: var(--accent-blue-dim);
  border: 1px solid rgba(0, 119, 204, 0.15);
  border-radius: 6px;
  padding: 8px 16px;
  font-size: 0.85rem;
  color: var(--accent-blue);
  margin-top: 4px;
}

.timeline-goal strong {
  font-weight: 700;
}

/* ========== Diagnosis ========== */
.diagnosis-container {
  max-width: 640px;
  margin: 0 auto;
}

.diagnosis-progress {
  display: flex;
  gap: 8px;
  margin-bottom: 32px;
  justify-content: center;
}

.diagnosis-progress-dot {
  width: 40px;
  height: 4px;
  border-radius: 2px;
  background: var(--border-color);
  transition: background var(--transition);
}

.diagnosis-progress-dot.active {
  background: var(--accent-blue);
}

.diagnosis-progress-dot.done {
  background: var(--accent-green);
}

.diagnosis-question {
  text-align: center;
  margin-bottom: 32px;
}

.diagnosis-question h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.diagnosis-question p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.diagnosis-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.diagnosis-option {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 18px 24px;
  font-size: 0.95rem;
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition);
  text-align: left;
  font-family: 'Zen Kaku Gothic New', sans-serif;
}

.diagnosis-option:hover {
  border-color: var(--accent-blue);
  background: var(--accent-blue-dim);
}

.diagnosis-option.selected {
  border-color: var(--accent-blue);
  background: var(--accent-blue-dim);
}

.diagnosis-result {
  display: none;
}

.diagnosis-result.show {
  display: block;
}

.result-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.result-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--text-primary);
}

.result-type {
  font-size: 0.8rem;
  color: var(--accent-green);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
  font-weight: 700;
}

.result-card h3 {
  font-size: 1.5rem;
  font-weight: 900;
  margin-bottom: 16px;
}

.result-card p {
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.result-recommend {
  text-align: left;
  margin: 20px 0;
  padding: 16px 20px;
  background: var(--bg-secondary);
  border-radius: var(--radius);
}

.result-recommend h4 {
  font-size: 0.85rem;
  color: var(--accent-blue);
  margin-bottom: 8px;
  font-weight: 700;
}

.result-recommend ul {
  list-style: none;
}

.result-recommend ul li {
  padding: 4px 0 4px 18px;
  position: relative;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.result-recommend ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-green);
}

.result-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 28px;
  flex-wrap: wrap;
}

/* ========== Gear ========== */
.gear-card .card-icon {
  width: 52px;
  height: 52px;
}

.gear-card .card-icon svg {
  width: 26px;
  height: 26px;
}

.gear-card h3 {
  font-size: 1.15rem;
}

.beginner-tips {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.beginner-tips h4 {
  font-size: 0.8rem;
  color: var(--accent-green);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
  font-weight: 700;
}

/* ========== Accordion ========== */
.accordion {
  max-width: 800px;
  margin: 0 auto;
}

.accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color var(--transition);
}

.accordion-item:hover {
  border-color: var(--border-hover);
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 700;
  font-family: 'Zen Kaku Gothic New', sans-serif;
  cursor: pointer;
  text-align: left;
  transition: color var(--transition);
}

.accordion-trigger:hover {
  color: var(--accent-blue);
}

.accordion-icon {
  font-size: 1.2rem;
  transition: transform var(--transition);
  color: var(--accent-blue);
}

.accordion-item.open .accordion-icon {
  transform: rotate(45deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.accordion-body {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.8;
}

.accordion-body p + p {
  margin-top: 12px;
}

/* ========== Notice ========== */
.notice {
  background: #fffbeb;
  border: 1px solid #f0d060;
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 40px;
  font-size: 0.85rem;
  color: #92700c;
  text-align: center;
}

/* ========== School ========== */
.feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 48px;
}

.feature-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  transition: all var(--transition);
}

.feature-item:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.feature-item p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.pricing-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--text-primary);
}

.pricing-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.pricing-label {
  font-size: 0.8rem;
  color: var(--accent-blue);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  font-weight: 700;
}

.pricing-card h3 {
  font-size: 1.2rem;
  margin-bottom: 16px;
}

.pricing-price {
  font-size: 2rem;
  font-weight: 900;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.pricing-price small {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text-secondary);
}

.pricing-detail {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.pricing-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
}

/* ========== Page Header ========== */
.page-header {
  padding: 60px 0 40px;
  text-align: center;
}

.page-header h1 {
  font-size: 2rem;
  font-weight: 900;
  margin-bottom: 16px;
}

.page-header p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  font-size: 0.95rem;
}

/* ========== Footer ========== */
.site-footer {
  background: #1a1a2e;
  border-top: 1px solid var(--border-color);
  padding: 48px 0 24px;
  margin-top: 40px;
  color: #c8c8d8;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 48px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.footer-brand {
  max-width: 360px;
}

.footer-logo {
  font-size: 1.1rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  color: #f0f0f5;
}

.footer-logo span {
  color: #4db8e8;
}

.footer-brand p {
  font-size: 0.85rem;
  color: #8888a0;
  line-height: 1.7;
}

.footer-links h4 {
  font-size: 0.8rem;
  color: #a0a0b8;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.footer-links ul {
  list-style: none;
}

.footer-links ul li {
  margin-bottom: 8px;
}

.footer-links ul a {
  font-size: 0.85rem;
  color: #8888a0;
  transition: color var(--transition);
}

.footer-links ul a:hover {
  color: #4db8e8;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 20px;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.75rem;
  color: #6a6a80;
}

/* ========== Back to top ========== */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent-blue);
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 900;
  box-shadow: 0 4px 12px rgba(0, 119, 204, 0.3);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 119, 204, 0.4);
}

/* ========== Slide Open Button ========== */
.btn-slide-open {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 12px 24px;
  background: var(--text-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 700;
  font-family: 'Zen Kaku Gothic New', sans-serif;
  cursor: pointer;
  transition: opacity var(--transition);
}

.btn-slide-open:hover {
  opacity: 0.6;
}

.btn-slide-open svg {
  flex-shrink: 0;
}

/* ========== Slide Modal ========== */
.slide-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2000;
  background: var(--bg-primary);
  flex-direction: column;
  animation: slideModalIn 0.35s ease;
}

.slide-modal.open {
  display: flex;
}

@keyframes slideModalIn {
  from { opacity: 0; transform: scale(0.97); }
  to { opacity: 1; transform: scale(1); }
}

.slide-modal-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  max-width: 100%;
  margin: 0 auto;
  width: 100%;
}

.slide-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}

.slide-step-label {
  font-size: 0.75rem;
  color: var(--accent-blue);
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 4px 12px;
  border: 1px solid var(--border-color);
  border-radius: 50px;
  white-space: nowrap;
}

.slide-title {
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--text-primary);
  flex: 1;
}

.slide-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all var(--transition);
  flex-shrink: 0;
}

.slide-close:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
  background: var(--bg-secondary);
}

.slide-progress {
  height: 3px;
  background: var(--border-color);
  flex-shrink: 0;
}

.slide-progress-bar {
  height: 100%;
  background: var(--text-primary);
  transition: width 0.4s ease;
  border-radius: 0 2px 2px 0;
}

.slide-body {
  flex: 1;
  overflow-y: auto;
  padding: 40px 24px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

.slide-content {
  max-width: 1200px;
  width: 100%;
  animation: slideContentIn 0.4s ease;
}

@keyframes slideContentIn {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

.slide-content.slide-out {
  animation: slideContentOut 0.2s ease forwards;
}

@keyframes slideContentOut {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(-40px); }
}

.slide-label {
  display: inline-block;
  font-size: 0.7rem;
  color: var(--accent-blue);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 12px;
  border: 1px solid rgba(0,119,204,0.2);
  border-radius: 50px;
  margin-bottom: 16px;
  background: var(--accent-blue-dim);
}

.slide-content h2 {
  font-size: 2.4rem;
  font-weight: 900;
  line-height: 1.4;
  margin-bottom: 24px;
  color: var(--text-primary);
}

.slide-content h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.slide-content p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 20px;
}

.slide-content p.slide-lead {
  font-size: 1.4rem;
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.8;
}

/* Slide visual cards */
.slide-visual-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.slide-visual-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  transition: all var(--transition);
}

.slide-visual-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.slide-visual-card .slide-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin: 0 auto 14px;
  border-radius: 12px;
  background: var(--accent-blue-dim);
}

.slide-visual-card .slide-card-icon svg {
  width: 28px;
  height: 28px;
  fill: var(--accent-blue);
}

.slide-visual-card .slide-card-icon.green {
  background: var(--accent-green-dim);
}

.slide-visual-card .slide-card-icon.green svg {
  fill: var(--accent-green);
}

.slide-visual-card h4 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.slide-visual-card p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 0;
  line-height: 1.6;
}

/* Slide comparison table */
.slide-compare {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 1.1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
}

.slide-compare th,
.slide-compare td {
  padding: 18px 24px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.slide-compare th {
  background: var(--bg-secondary);
  font-weight: 700;
  color: var(--text-primary);
  font-size: 1.1rem;
}

.slide-compare td {
  color: var(--text-secondary);
}

.slide-compare tr:last-child td {
  border-bottom: none;
}

.slide-compare tr:hover td {
  background: var(--accent-blue-dim);
}

/* Slide steps list */
.slide-steps {
  list-style: none;
  margin: 24px 0;
  counter-reset: slide-step;
}

.slide-steps li {
  counter-increment: slide-step;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 1.15rem;
  line-height: 1.7;
}

.slide-steps li:last-child {
  border-bottom: none;
}

.slide-steps li::before {
  content: counter(slide-step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  min-width: 32px;
  border-radius: 50%;
  background: var(--accent-blue);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
}

/* Slide highlight box */
.slide-highlight {
  background: var(--accent-blue-dim);
  border: 1px solid rgba(0,119,204,0.15);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin: 24px 0;
}

.slide-highlight.green {
  background: var(--accent-green-dim);
  border-color: rgba(0,168,107,0.15);
}

.slide-highlight.warning {
  background: #fffbeb;
  border-color: #f0d060;
}

.slide-highlight h4 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent-blue);
  margin-bottom: 12px;
}

.slide-highlight.green h4 {
  color: var(--accent-green);
}

.slide-highlight.warning h4 {
  color: #92700c;
}

.slide-highlight p {
  font-size: 1.1rem;
  margin-bottom: 0;
}

.slide-highlight ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.slide-highlight ul li {
  padding: 6px 0 6px 20px;
  position: relative;
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.slide-highlight ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 13px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-blue);
}

.slide-highlight.green ul li::before {
  background: var(--accent-green);
}

/* Slide big number */
.slide-big-number {
  display: flex;
  align-items: center;
  gap: 20px;
  margin: 24px 0;
  padding: 20px 24px;
  background: var(--bg-secondary);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
}

.slide-big-number .number {
  font-size: 3rem;
  font-weight: 900;
  color: var(--accent-blue);
  line-height: 1;
  white-space: nowrap;
}

.slide-big-number p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin: 0;
}

/* Slide checklist */
.slide-checklist {
  list-style: none;
  margin: 24px 0;
}

.slide-checklist li {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 14px 0;
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.slide-checklist li::before {
  content: '';
  display: block;
  width: 22px;
  height: 22px;
  min-width: 22px;
  border: 2px solid var(--border-color);
  border-radius: 4px;
  margin-top: 2px;
}

.slide-checklist li.checked::before {
  background: var(--accent-green);
  border-color: var(--accent-green);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='white' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E");
  background-size: 14px;
  background-repeat: no-repeat;
  background-position: center;
}

/* Slide footer navigation */
.slide-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  flex-shrink: 0;
  background: var(--bg-primary);
}

.slide-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 24px;
  background: none;
  border: 1px solid var(--text-primary);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 700;
  font-family: 'Zen Kaku Gothic New', sans-serif;
  color: var(--text-primary);
  cursor: pointer;
  transition: opacity var(--transition);
}

.slide-nav-btn:hover {
  opacity: 0.6;
}

.slide-nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  pointer-events: none;
}

.slide-counter {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav-list {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.98);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    z-index: 1005;
  }

  .nav-list.open {
    opacity: 1;
    visibility: visible;
  }

  .nav-list a {
    font-size: 1.2rem;
    color: var(--text-primary);
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .hero p {
    font-size: 0.9rem;
  }

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

  .btn {
    width: 100%;
    max-width: 300px;
  }

  .section {
    padding: 60px 0;
  }

  .section-title {
    font-size: 1.4rem;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .page-header h1 {
    font-size: 1.6rem;
  }

  .timeline::before {
    left: 16px;
  }

  .timeline-item {
    padding-left: 52px;
  }

  .timeline-dot {
    left: 6px;
    width: 20px;
    height: 20px;
  }

  .footer-top {
    flex-direction: column;
    gap: 32px;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
  }

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

  .slide-header {
    padding: 12px 16px;
    gap: 10px;
  }

  .slide-title {
    font-size: 0.95rem;
  }

  .slide-body {
    padding: 24px 16px;
  }

  .slide-content h2 {
    font-size: 1.4rem;
  }

  .slide-visual-grid {
    grid-template-columns: 1fr;
  }

  .slide-compare {
    font-size: 0.8rem;
  }

  .slide-compare th,
  .slide-compare td {
    padding: 10px 12px;
  }

  .slide-footer {
    padding: 12px 16px;
  }

  .slide-nav-btn {
    padding: 8px 14px;
    font-size: 0.8rem;
  }

  .slide-big-number {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.5rem;
  }

  .container {
    padding: 0 16px;
  }

  .card {
    padding: 24px 20px;
  }

  .timeline-card {
    padding: 20px 16px;
  }
}