/* =========================================================
   ラップDE老GO — style.css
   黒背景 × ビビッドアクセント（ネオンライム）のモダン・ストリート系
   ========================================================= */

:root {
  --bg: #111113;
  --bg-alt: #19191c;
  --fg: #f7f7f4;
  --fg-dim: #deded8;
  --accent: #f5c518;
  --accent-dark: #d9a90e;
  --accent-blue: #5b6ef0;
  --border: rgba(245, 245, 242, 0.14);
  --font-head: "Yusei Magic", sans-serif;
  --font-body: "Noto Sans JP", sans-serif;
  --container-w: 1120px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-weight: 500;
  line-height: 1.8;
  letter-spacing: 0;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

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

/* subtle grain overlay for texture */
.noise-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* =============== HEADER =============== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(17, 17, 19, 0.75);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background 0.3s ease;
}
.site-header.scrolled {
  border-bottom-color: var(--border);
  background: rgba(17, 17, 19, 0.94);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  flex-shrink: 0;
}

.logo-text {
  font-family: var(--font-head);
  font-size: 18px;
  letter-spacing: 0.02em;
}
.logo-text .accent { color: var(--accent); }

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 13px;
  letter-spacing: 0.08em;
  font-weight: 700;
}
.main-nav a {
  color: var(--fg-dim);
  transition: color 0.2s ease;
}
.main-nav a:hover { color: var(--fg); }

.nav-cta {
  background: var(--accent);
  color: #0a0a0a !important;
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 700;
}
.nav-cta:hover { background: var(--accent-dark); }

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
}
.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--fg);
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =============== HERO =============== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 76px;
  overflow: hidden;
}

.hero-bg-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-head);
  font-size: clamp(80px, 20vw, 260px);
  color: transparent;
  -webkit-text-stroke: 1px rgba(245, 245, 242, 0.06);
  white-space: nowrap;
  z-index: 0;
  user-select: none;
  pointer-events: none;
}

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

.hero-avatar {
  display: block;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  margin: 0 0 28px;
  box-shadow: 0 0 0 6px rgba(91, 110, 240, 0.18), 0 0 60px rgba(91, 110, 240, 0.35);
}

.kicker {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 20px;
}

.hero-title {
  font-family: var(--font-head);
  font-size: clamp(44px, 9vw, 108px);
  line-height: 1.25;
  letter-spacing: 0.01em;
}
.hero-title-line { display: inline-block; }
.hero-title .accent {
  color: var(--accent);
  margin: 0 4px;
}

.hero-lead {
  margin-top: 24px;
  font-size: 19px;
  font-weight: 500;
  color: var(--fg-dim);
  line-height: 1.75;
  max-width: 560px;
}
.hero-lead[data-hide-if-empty]:empty { display: none; margin: 0; }

.hero-badge {
  display: inline-block;
  margin-top: 28px;
  padding: 8px 18px;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  border-radius: 999px;
}

.hero-actions {
  margin-top: 40px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 32px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  border-radius: 999px;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #0a0a0a;
}
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); }
.btn-ghost {
  border: 1px solid var(--border);
  color: var(--fg);
}
.btn-ghost:hover { border-color: var(--fg); transform: translateY(-2px); }
.btn-large { padding: 20px 40px; font-size: 15px; }

.scroll-cue {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 56px;
  background: var(--border);
  overflow: hidden;
}
.scroll-cue span {
  display: block;
  width: 100%;
  height: 50%;
  background: var(--accent);
  animation: scrollcue 1.8s ease-in-out infinite;
}
@keyframes scrollcue {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(200%); }
}

/* =============== SECTIONS (general) =============== */
.section {
  padding: 140px 0;
  border-top: 1px solid var(--border);
  position: relative;
}

.label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-head);
  font-size: clamp(28px, 5vw, 48px);
  line-height: 1.5;
  letter-spacing: 0.01em;
  margin-bottom: 32px;
  white-space: pre-line;
}

.lead-text {
  font-size: 20px;
  font-weight: 500;
  color: var(--fg);
  margin-bottom: 20px;
  line-height: 1.7;
  max-width: 680px;
}
.lead-text[data-hide-if-empty]:empty { display: none; margin: 0; }

.body-text {
  font-size: 18px;
  font-weight: 500;
  color: var(--fg-dim);
  line-height: 1.8;
  max-width: 680px;
}

/* =============== ABOUT =============== */
.about { background: var(--bg); }

/* =============== FEATURES =============== */
.features { background: var(--bg-alt); }

.feature-list {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.feature-item {
  background: var(--bg-alt);
  padding: 44px 32px;
  transition: background 0.25s ease;
}
.feature-item:hover { background: #171717; }

.feature-num {
  display: block;
  font-family: var(--font-head);
  font-size: 32px;
  color: var(--accent);
  margin-bottom: 24px;
}

.feature-title {
  font-family: var(--font-head);
  font-size: 18px;
  letter-spacing: 0.01em;
  margin-bottom: 16px;
  line-height: 1.6;
}

.feature-body {
  font-size: 16px;
  font-weight: 500;
  color: var(--fg-dim);
  line-height: 1.8;
}

/* =============== ACHIEVEMENTS =============== */
.achievements { background: var(--bg); }

.award-list {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.award-item {
  border: 1px solid var(--border);
  padding: 36px 28px;
  border-radius: 4px;
  position: relative;
}
.award-item::before {
  content: "★";
  color: var(--accent);
  font-size: 20px;
  display: block;
  margin-bottom: 16px;
}

.award-title {
  font-family: var(--font-head);
  font-size: 16px;
  letter-spacing: 0.01em;
  margin-bottom: 10px;
  line-height: 1.5;
}
.award-sub {
  font-size: 14px;
  color: var(--accent);
  font-weight: 700;
}

.source-link {
  display: inline-block;
  margin-top: 32px;
  font-size: 13px;
  color: var(--fg-dim);
  border-bottom: 1px solid var(--border);
  padding-bottom: 2px;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.source-link:hover { color: var(--fg); border-color: var(--fg); }

/* =============== TARGET / FOR =============== */
.target { background: var(--bg-alt); }

.target-list {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.target-item {
  padding: 8px 0;
}

.target-title {
  font-family: var(--font-head);
  font-size: 16px;
  letter-spacing: 0.01em;
  margin-bottom: 14px;
  line-height: 1.6;
  position: relative;
  padding-left: 20px;
}
.target-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 2px;
}

.target-body {
  font-size: 16px;
  font-weight: 500;
  color: var(--fg-dim);
  line-height: 1.8;
}

/* =============== CTA =============== */
.cta-section {
  background: var(--bg);
  text-align: left;
}

.cta-box {
  margin-top: 40px;
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-email {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 15px;
}
.cta-email-label {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--fg-dim);
}
.cta-email a {
  border-bottom: 1px solid var(--border);
  transition: border-color 0.2s ease;
}
.cta-email a:hover { border-color: var(--accent); color: var(--accent); }

/* =============== FOOTER =============== */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 48px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-logo {
  font-family: var(--font-head);
  font-size: 15px;
  letter-spacing: 0.03em;
}
.footer-tagline {
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--accent);
}
.footer-copyright {
  font-size: 12px;
  color: var(--fg-dim);
}

/* =============== SCROLL REVEAL =============== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* =============== RESPONSIVE =============== */
@media (max-width: 860px) {
  .feature-list, .award-list, .target-list {
    grid-template-columns: 1fr;
  }
  .section { padding: 96px 0; }
}

@media (max-width: 720px) {
  .main-nav {
    position: fixed;
    top: 76px;
    left: 0; right: 0;
    background: rgba(10, 10, 10, 0.97);
    backdrop-filter: blur(10px);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 24px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease;
  }
  .main-nav.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .main-nav a {
    width: 100%;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
  }
  .main-nav a:last-child { border-bottom: none; margin-top: 12px; }
  .menu-toggle { display: flex; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; }
  .cta-box { flex-direction: column; align-items: flex-start; }
}