@charset "UTF-8";

/* ==============================================
   Base Tokens / Global Rules
============================================== */
:root {
  --c-text: #333333;
  --c-accent: #0f2c59;
  --c-accent-hover: #1a4078;
  --c-bg: #000000;
  --c-light: #f8f9fa;
  --c-border: #e0e0e0;
  --c-error: #d32f2f;
  --c-footer-bg: #333333;

  --font-base: "Noto Sans JP", sans-serif;

  --container-width: 1080px;
  --header-height: 70px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --transition-base: 0.3s ease;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html { 
  scroll-behavior: smooth; 
  scroll-padding-top: var(--header-height); /* ヘッダー高さ分のスクロール位置調整 */
}
body {
  margin: 0; /* 座標を破壊する -30px は完全に破棄 */
  font-family: var(--font-base);
  color: var(--c-text);
  background: var(--c-bg);
  

  /* 解決策2: 見えないゴミ文字（BOMや空白）の高さを0にして隙間を圧死させる */
  font-size: 0;
  line-height: 0;
}

/* body直下の実体要素にのみ、本来のテキスト設定を安全に復元する */
body > * {
  font-size: 16px;
  line-height: 1.8;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: opacity var(--transition-base); }
ul, ol { margin: 0; padding: 0; list-style: none; }
button, input, textarea { font: inherit; }
@media (hover: hover) {
  a:not(.btn):hover { opacity: 0.7; }
}

/* Utilities */
.pc-only { display: none; }
.sp-only { display: block; }
@media (min-width: 768px) {
  .pc-only { display: block; }
  .sp-only { display: none; }
}
.text-center { text-align: center; }
.u-mt-40 { margin-top: 40px; }
.u-mb-40 { margin-bottom: 40px; }
.is-hidden { display: none !important; }
.scroll-lock { overflow: hidden; }
.text-link { color: var(--c-accent); text-decoration: underline; }

/* Layout */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: 80px 0; }
.bg-light { background-color: var(--c-light); }

/* Common Title */
.sec-title {
  font-size: 1.75rem;
  font-weight: bold;
  text-align: center;
  margin-bottom: 48px;
  position: relative;
}
.sec-title::after {
  content: "";
  display: block;
  width: 40px;
  height: 3px;
  background: var(--c-accent);
  margin: 16px auto 0;
}

/* Header */
.header {
  border-bottom: 1px solid var(--c-border);
  background: var(--c-bg);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  height: var(--header-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-size: 1.25rem;
  font-weight: bold;
}

/* PC Nav */
.nav-pc ul {
  display: flex;
  gap: 32px;
}
.nav-pc a {
  font-weight: bold;
}
.nav-pc a.is-current {
  color: var(--c-accent);
}

/* Mobile Menu Button */
.menu-toggle {
  background: none;
  border: none;
  width: 40px;
  height: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  z-index: 102;
}
.menu-toggle .bar {
  width: 24px;
  height: 2px;
  background: var(--c-text);
  transition: var(--transition-base);
}
.menu-toggle[aria-expanded="true"] .bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.menu-toggle[aria-expanded="true"] .bar:nth-child(2) {
  opacity: 0;
}
.menu-toggle[aria-expanded="true"] .bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Nav */
.nav-sp {
  position: fixed;
  inset: 0;
  background: var(--c-bg);
  z-index: 101;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-base);
}
.nav-sp[aria-hidden="false"] {
  opacity: 1;
  visibility: visible;
}
.nav-sp ul {
  text-align: center;
}
.nav-sp li {
  margin-bottom: 24px;
}
.nav-sp a {
  font-size: 1.25rem;
  font-weight: bold;
}

/* Buttons */
.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 56px;
  padding: 0 40px;
  font-weight: bold;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-base);
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--c-accent);
  color: #fff;
}
.btn-outline {
  background: transparent;
  border-color: var(--c-accent);
  color: var(--c-accent);
}
.btn-block {
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
}
@media (hover: hover) {
  .btn-primary:hover { background: var(--c-accent-hover); }
  .btn-outline:hover {
    background: var(--c-accent);
    color: #fff;
  }
}

/* Page Header */
.page-header {
  background: var(--c-light);
  padding: 80px 0 40px;
  border-bottom: 1px solid var(--c-border);
}
.page-title {
  font-size: 2.5rem;
  margin: 0 0 8px 0;
  color: var(--c-accent);
}
.page-sub {
  margin: 0;
  font-weight: bold;
}

/* Footer */
.footer {
  background: var(--c-footer-bg);
  color: #fff;
  padding: 60px 0 24px;
}
.footer-inner {
  display: grid;
  gap: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.2);
  padding-bottom: 40px;
  margin-bottom: 24px;
}
@media (min-width: 768px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
}
.footer-logo {
  font-size: 1.5rem;
  font-weight: bold;
  margin-bottom: 16px;
}
.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-copy {
  text-align: center;
  color: #aaa;
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}