@charset "utf-8";

:root {
  --primary: #f472b6;
  --primary-dark: #ec4899;
  --accent: #f9a8d4;
  --dark: #0d0d0d;
  --dark-surface: #1a1a1a;
  --dark-card: #242424;
  --text: #ffffff;
  --text-muted: #a0a0a0;
  --gradient-hero: linear-gradient(135deg, #f472b6 0%, #f9a8d4 50%, #fce7f3 100%);
  --gradient-cta: linear-gradient(90deg, #ec4899 0%, #f472b6 100%);
  --shadow-glow: 0 0 60px rgba(244, 114, 182, 0.3);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Zen Kaku Gothic New', sans-serif;
  background: var(--dark);
  color: var(--text);
  line-height: 1.8;
  overflow-x: hidden;
}

/* ========== UTILITY ========== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

.text-gradient {
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ========== HEADER ========== */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--primary);
}

.cta-header {
  background: var(--gradient-cta);
  color: white;
  padding: 12px 28px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px rgba(167, 139, 250, 0.3);
}

.cta-header:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(167, 139, 250, 0.5);
}

/* ========== HERO ========== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 80%;
  height: 150%;
  background: radial-gradient(ellipse at center, rgba(167, 139, 250, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-text {
  animation: fadeInUp 1s ease;
}

.hero-badge {
  display: inline-block;
  background: rgba(167, 139, 250, 0.15);
  border: 1px solid rgba(167, 139, 250, 0.3);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 24px;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 40px;
  max-width: 500px;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--gradient-cta);
  color: white;
  padding: 18px 40px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-glow);
}

.hero-cta:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 10px 40px rgba(167, 139, 250, 0.5);
}

.hero-cta svg {
  width: 20px;
  height: 20px;
  transition: transform 0.3s ease;
}

.hero-cta:hover svg {
  transform: translateX(4px);
}

.hero-visual {
  position: relative;
  animation: fadeInRight 1s ease 0.3s both;
}

.phone-mockup {
  background: var(--dark-card);
  border-radius: 40px;
  padding: 12px;
  box-shadow: var(--shadow-glow), 0 20px 60px rgba(0, 0, 0, 0.5);
  max-width: 320px;
  margin: 0 auto;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.phone-screen {
  background: var(--dark-surface);
  border-radius: 30px;
  overflow: hidden;
  aspect-ratio: 9/16;
}

.phone-header {
  background: linear-gradient(180deg, var(--dark-card) 0%, transparent 100%);
  padding: 20px 16px 30px;
}

.phone-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.phone-logo {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--primary);
}

.stories-row {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 8px;
}

.story-item {
  flex-shrink: 0;
  text-align: center;
}

.story-ring {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gradient-hero);
  padding: 3px;
  margin-bottom: 4px;
}

.story-avatar {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--dark-surface);
  border: 2px solid var(--dark-surface);
}

.story-name {
  font-size: 0.65rem;
  color: var(--text-muted);
}

.phone-feed {
  padding: 0 12px 12px;
}

.post-card {
  background: var(--dark-card);
  border-radius: 16px;
  padding: 14px;
  margin-bottom: 10px;
}

.post-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.post-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, #c4b5fd, #e0e7ff);
}

.post-info h4 {
  font-size: 0.8rem;
  font-weight: 600;
}

.post-info span {
  font-size: 0.65rem;
  color: var(--text-muted);
}

.post-image {
  width: 100%;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, rgba(167, 139, 250, 0.3), rgba(224, 231, 255, 0.3));
  border-radius: 12px;
  margin-bottom: 10px;
}

.post-actions {
  display: flex;
  gap: 16px;
}

.post-action {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.7rem;
  color: var(--text-muted);
}

.post-action.liked {
  color: var(--primary);
}

.float-badge {
  position: absolute;
  background: var(--dark-card);
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 0.75rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
  animation: float 3s ease-in-out infinite;
  white-space: nowrap;
}

.float-badge.badge-1 {
  top: 20%;
  right: -10px;
  animation-delay: 0s;
}

.float-badge.badge-2 {
  bottom: 30%;
  left: -10px;
  animation-delay: 1s;
}

.float-badge.badge-3 {
  top: 50%;
  right: -15px;
  animation-delay: 2s;
}

@media (min-width: 769px) {
  .float-badge {
    padding: 12px 18px;
    border-radius: 12px;
    font-size: 0.85rem;
  }
  
  .float-badge.badge-1 {
    top: 10%;
    right: -20px;
  }
  
  .float-badge.badge-2 {
    bottom: 20%;
    left: -30px;
  }
  
  .float-badge.badge-3 {
    top: 40%;
    right: -40px;
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ========== PROBLEM SECTION ========== */
.problem {
  padding: 50px 0;
  background: var(--dark-surface);
  position: relative;
}

.problem::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(167, 139, 250, 0.5), transparent);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-label {
  display: inline-block;
  color: var(--primary);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 20px;
}

.section-desc {
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.1rem;
}

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

.problem-card {
  background: var(--dark-card);
  border-radius: 20px;
  padding: 32px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: all 0.3s ease;
}

.problem-card:hover {
  transform: translateY(-5px);
  border-color: rgba(167, 139, 250, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.problem-icon {
  width: 56px;
  height: 56px;
  background: rgba(167, 139, 250, 0.15);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
}

.problem-card h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
  color: var(--text);
}

.problem-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ========== SOLUTION SECTION ========== */
.solution {
  padding: 50px 0;
  position: relative;
}

.solution-intro {
  text-align: center;
  margin-bottom: 80px;
}

.solution-intro h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 24px;
}

.solution-intro p {
  color: var(--text-muted);
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 32px;
}

.feature-card {
  background: linear-gradient(145deg, var(--dark-card), var(--dark-surface));
  border-radius: 24px;
  padding: 30px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  position: relative;
  overflow: hidden;
  transition: all 0.4s ease;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-hero);
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
}

.feature-number {
  font-family: 'Montserrat', sans-serif;
  font-size: 4rem;
  font-weight: 800;
  color: rgba(167, 139, 250, 0.15);
  position: absolute;
  top: 20px;
  right: 30px;
}

.feature-icon {
  width: 64px;
  height: 64px;
  background: var(--gradient-hero);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 1.8rem;
}

.feature-card h3 {
  font-size: 1.4rem;
  margin-bottom: 16px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.8;
}

.feature-list {
  margin-top: 20px;
  list-style: none;
}

.feature-list li {
  padding: 8px 0;
  padding-left: 28px;
  position: relative;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.feature-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

/* ========== FUNCTIONS SECTION ========== */
.functions {
  padding: 50px 0;
  background: var(--dark-surface);
}

.functions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-top: 60px;
}

.func-card {
  background: var(--dark-card);
  border-radius: 16px;
  padding: 28px;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: all 0.3s ease;
}

.func-card:hover {
  background: linear-gradient(145deg, var(--dark-card), rgba(167, 139, 250, 0.1));
  border-color: rgba(167, 139, 250, 0.3);
  transform: scale(1.03);
}

.func-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.func-card h4 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.func-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ========== COMPARISON ========== */
.comparison {
  padding: 50px 0;
}

.comparison-table {
  background: var(--dark-card);
  border-radius: 24px;
  overflow: hidden;
  margin-top: 60px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.comparison-header {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  background: var(--dark-surface);
  padding: 24px 32px;
  font-weight: 700;
}

.comparison-header span:nth-child(3) {
  color: var(--primary);
}

.comparison-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  padding: 20px 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  align-items: center;
}

.comparison-row:hover {
  background: rgba(167, 139, 250, 0.05);
}

.comparison-row span:first-child {
  color: var(--text-muted);
}

.check {
  color: #4ade80;
  font-size: 1.2rem;
}

.cross {
  color: #f87171;
  font-size: 1.2rem;
}

.partial {
  color: #fbbf24;
  font-size: 0.9rem;
}


/* ========== FREE BANNER ========== */
.free-banner {
  padding: 50px 0;
  background: linear-gradient(135deg, rgba(244, 114, 182, 0.15), rgba(167, 139, 250, 0.1));
  text-align: center;
}

.free-banner-content {
  max-width: 800px;
  margin: 0 auto;
}

.free-banner h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 16px;
}

.free-banner p {
  color: var(--text-muted);
  font-size: 1.2rem;
  margin-bottom: 32px;
}

.free-badges {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.free-badge-item {
  background: var(--dark-card);
  padding: 16px 32px;
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: 700;
  border: 2px solid rgba(74, 222, 128, 0.3);
}

.free-badge-item span {
  color: #4ade80;
}

/* ========== CTA SECTION ========== */
.cta-section {
  padding: 50px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(ellipse at center, rgba(167, 139, 250, 0.2) 0%, transparent 70%);
  pointer-events: none;
}

.cta-box {
  background: linear-gradient(145deg, var(--dark-card), var(--dark-surface));
  border-radius: 32px;
  padding: 80px 60px;
  border: 1px solid rgba(167, 139, 250, 0.2);
  position: relative;
  box-shadow: var(--shadow-glow);
}

.cta-box h2 {
  font-size: clamp(1.7rem, 4vw, 2.3rem);
  margin-bottom: 20px;
  line-height: 1.5;
}

.cta-box p {
  color: var(--text-muted);
  font-size: 1.2rem;
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--gradient-cta);
  color: white;
  padding: 20px 50px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1rem;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-glow);
}

.cta-button:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 15px 50px rgba(167, 139, 250, 0.5);
}

.cta-button-site {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background-image: linear-gradient(90deg, rgba(65, 164, 253, 1), rgba(14, 244, 255, 1));
  color: white;
  padding: 20px 50px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1rem;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-glow);
}

.cta-button-site:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 15px 50px rgba(167, 139, 250, 0.5);
}

p.cta-note {
  margin-top: 24px;
  color: var(--text-muted);
  font-size: 0.9rem!important;
}

/* ========== FOOTER ========== */
footer {
  padding: 60px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  text-align: center;
}

.footer-logo {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 20px;
  color: var(--primary);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 24px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-visual {
    order: -1;
  }

  .phone-mockup {
    max-width: 280px;
  }

  .comparison-header,
  .comparison-row {
    grid-template-columns: 1.5fr 1fr 1fr;
    padding: 16px 20px;
    font-size: 0.9rem;
  }

  .cta-box {
    padding: 50px 30px;
  }

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

@media (max-width: 768px) {
  .comparison-table {
    overflow-x: auto;
  }

  .comparison-header,
  .comparison-row {
    grid-template-columns: 1fr;
    gap: 8px;
    text-align: left;
  }

  .comparison-header {
    display: none;
  }

  .comparison-row {
    display: flex;
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .comparison-row span:first-child {
    font-weight: 700;
    color: var(--text);
    font-size: 1rem;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .comparison-row span:nth-child(2),
  .comparison-row span:nth-child(3) {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 0;
  }

  .comparison-row span:nth-child(2)::before {
    content: 'X：';
    color: var(--text-muted);
    font-size: 0.85rem;
    min-width: 100px;
  }

  .comparison-row span:nth-child(3)::before {
    content: '当サイト：';
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 600;
    min-width: 100px;
  }

  .comparison-row .check,
  .comparison-row .cross,
  .comparison-row .partial {
    font-size: 0.95rem;
  }
}

/* ========== HERO POINT ========== */
.hero-point {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(167, 139, 250, 0.1);
  border: 1px solid rgba(167, 139, 250, 0.2);
  border-radius: 12px;
  padding: 16px 20px;
  margin-bottom: 32px;
  font-size: 1rem;
  color: var(--accent);
}

.hero-point-icon {
  font-size: 1.4rem;
}

@media (max-width: 768px) {
  .hero-point {
    font-size: 0.9rem;
    padding: 14px 16px;
  }
}