* { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: var(--font-jp);
      color: var(--pk-ink);
      background: var(--pk-sand);
      line-height: 1.7;
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }

    .wrap {
      width: min(100% - 2.5rem, var(--max));
      margin-inline: auto;
    }

    /* Header over hero */
    .site-header {
      position: absolute;
      inset: 0 0 auto;
      z-index: 30;
      padding: 1.1rem 0;
    }
    .site-header .wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      color: #fff;
    }
    .logo-mark {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--pk-red);
      border: 2px solid #fff;
      display: grid;
      place-items: center;
      font-family: var(--font-display);
      font-weight: 800;
      font-size: 0.7rem;
      letter-spacing: 0.02em;
      line-height: 1;
      text-align: center;
    }
    .logo-text {
      display: flex;
      flex-direction: column;
      gap: 0.05rem;
    }
    .logo-en {
      font-family: var(--font-display);
      font-weight: 800;
      font-size: 1.35rem;
      letter-spacing: 0.06em;
      line-height: 1;
    }
    .logo-jp {
      font-size: 0.68rem;
      letter-spacing: 0.16em;
      opacity: 0.85;
    }
    .nav {
      display: flex;
      align-items: center;
      gap: 1.35rem;
    }
    .nav a {
      color: rgba(255,255,255,0.9);
      font-size: 0.86rem;
      font-weight: 500;
    }
    .nav a:hover { color: #fff; }
    .nav-cta {
      background: var(--pk-red);
      color: #fff !important;
      padding: 0.5rem 0.95rem;
      font-weight: 700 !important;
      font-size: 0.82rem !important;
    }
    .nav-cta:hover { background: var(--pk-red-bright) !important; color: #fff !important; }
    @media (max-width: 900px) {
      .nav a:not(.nav-cta) { display: none; }
    }

    /* HERO — 写真＋ニュートラル。赤は差し色だけ */
    .hero {
      position: relative;
      min-height: 100svh;
      display: grid;
      align-items: center;
      color: #fff;
      overflow: hidden;
      background-color: #1a2430;
      background-image:
        linear-gradient(105deg, rgba(18, 20, 24, 0.78) 0%, rgba(18, 20, 24, 0.42) 52%, rgba(18, 20, 24, 0.2) 100%),
        linear-gradient(180deg, transparent 45%, rgba(18, 20, 24, 0.55) 100%),
        url("https://images.unsplash.com/photo-1574629810360-7efbbe195018?auto=format&fit=crop&w=1800&q=80");
      background-position: center;
      background-size: cover;
      background-repeat: no-repeat;
      padding: 7.5rem 0 4rem;
    }
    .hero::before {
      content: "";
      position: absolute;
      left: 0;
      top: 0;
      bottom: 0;
      width: 4px;
      background: var(--pk-red);
      z-index: 3;
    }
    .hero-pitch {
      position: absolute;
      right: -5%;
      top: 18%;
      width: 55%;
      height: 70%;
      pointer-events: none;
      opacity: 0.14;
      background:
        linear-gradient(#fff, #fff) 40% center / 2px 70% no-repeat,
        linear-gradient(#fff, #fff) 10% 50% / 35% 2px no-repeat,
        linear-gradient(#fff, #fff) 55% 50% / 35% 2px no-repeat,
        radial-gradient(circle at 40% 50%, transparent 14%, #fff 14.3%, #fff 15%, transparent 15.3%);
    }
    .hero .wrap {
      width: min(100% - 2.5rem, var(--max));
      margin-inline: auto;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 40rem;
      margin-top: 2rem;
    }
    .hero-brand {
      font-family: var(--font-display);
      font-weight: 800;
      font-size: clamp(3.6rem, 12vw, 7.2rem);
      line-height: 0.88;
      letter-spacing: 0.02em;
      text-transform: uppercase;
      margin-bottom: 0.55rem;
      text-shadow: 0 2px 24px rgba(0,0,0,0.35);
    }
    .hero-brand span {
      display: block;
      color: #fff;
    }
    .hero-since {
      display: inline-flex;
      align-items: center;
      gap: 0.55rem;
      font-family: var(--font-mono);
      font-size: 0.78rem;
      letter-spacing: 0.22em;
      text-transform: uppercase;
      color: rgba(255,255,255,0.85);
      background: transparent;
      padding: 0;
      margin-bottom: 1.35rem;
      box-shadow: none;
    }
    .hero-since::before {
      content: "";
      width: 8px;
      height: 8px;
      background: var(--pk-red);
      flex-shrink: 0;
    }
    .hero-headline {
      font-size: clamp(1.4rem, 3.2vw, 1.9rem);
      font-weight: 900;
      letter-spacing: 0.06em;
      line-height: 1.45;
      margin-bottom: 0.85rem;
      text-shadow: 0 1px 12px rgba(0,0,0,0.35);
      border-left: 3px solid var(--pk-red);
      padding-left: 0.85rem;
    }
    .hero-lead {
      font-size: 1.05rem;
      color: rgba(255,255,255,0.95);
      max-width: 28rem;
      margin-bottom: 1.75rem;
      text-shadow: 0 1px 8px rgba(0,0,0,0.4);
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 0.7rem;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 3.05rem;
      padding: 0 1.4rem;
      font-family: var(--font-jp);
      font-size: 0.92rem;
      font-weight: 700;
      letter-spacing: 0.04em;
      border: none;
      cursor: pointer;
      transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
    }
    .btn:hover { transform: translateY(-1px); }
    .btn-primary {
      background: var(--pk-red);
      color: #fff;
    }
    .btn-primary:hover { background: #e01535; }
    .btn-ghost {
      background: transparent;
      color: #fff;
      border: 1px solid rgba(255,255,255,0.55);
    }
    .btn-ghost:hover { background: rgba(255,255,255,0.1); }

    /* News banner — ヒーロー直下 */
    .news-banner {
      background: #fff;
      border-bottom: 1px solid var(--pk-line);
      padding: 1.75rem 0 2rem;
    }
    .news-banner-head {
      display: flex;
      align-items: baseline;
      justify-content: space-between;
      gap: 1rem;
      margin-bottom: 1.1rem;
    }
    .news-banner-head h2 {
      font-family: var(--font-display);
      font-weight: 800;
      font-size: 1.35rem;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--pk-ink);
    }
    .news-banner-head h2 span {
      color: var(--pk-red);
      margin-right: 0.35rem;
    }
    .news-all {
      font-size: 0.82rem;
      font-weight: 700;
      color: var(--pk-muted);
      letter-spacing: 0.04em;
    }
    .news-all:hover { color: var(--pk-red); }
    .news-feature {
      display: grid;
      grid-template-columns: 1.35fr 1fr;
      gap: 0;
      min-height: 220px;
      background: var(--pk-charcoal);
      color: #fff;
      overflow: hidden;
    }
    @media (max-width: 780px) {
      .news-feature { grid-template-columns: 1fr; }
    }
    .news-feature-visual {
      position: relative;
      min-height: 200px;
      background:
        linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.35) 100%),
        url("https://images.unsplash.com/photo-1529900748604-07564a03e7a6?auto=format&fit=crop&w=1200&q=80") center / cover no-repeat;
    }
    .news-feature-body {
      padding: 1.5rem 1.6rem;
      display: flex;
      flex-direction: column;
      justify-content: center;
      gap: 0.65rem;
      border-left: 3px solid var(--pk-red);
    }
    .news-date {
      font-family: var(--font-mono);
      font-size: 0.72rem;
      letter-spacing: 0.14em;
      text-transform: uppercase;
      color: rgba(255,255,255,0.55);
    }
    .news-feature-body h3 {
      font-size: clamp(1.05rem, 2.2vw, 1.25rem);
      font-weight: 900;
      letter-spacing: 0.03em;
      line-height: 1.45;
    }
    .news-feature-body p {
      font-size: 0.9rem;
      color: rgba(255,255,255,0.72);
      line-height: 1.6;
    }
    .news-feature:hover .news-feature-body h3 {
      color: #ffd0d8;
    }
    .news-list {
      margin-top: 0.85rem;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 0.75rem;
    }
    @media (max-width: 640px) {
      .news-list { grid-template-columns: 1fr; }
    }
    .news-item {
      display: flex;
      align-items: baseline;
      gap: 0.85rem;
      padding: 0.85rem 0;
      border-bottom: 1px solid var(--pk-line);
    }
    .news-item time {
      font-family: var(--font-mono);
      font-size: 0.7rem;
      letter-spacing: 0.08em;
      color: var(--pk-muted);
      flex-shrink: 0;
      width: 5.5rem;
    }
    .news-item span {
      font-size: 0.92rem;
      font-weight: 700;
      line-height: 1.45;
    }
    .news-item:hover span { color: var(--pk-red); }

    /* Sections */
    .section {
      padding: clamp(3.25rem, 7vw, 5.5rem) 0;
    }
    .section-label {
      font-family: var(--font-mono);
      font-size: 0.72rem;
      letter-spacing: 0.2em;
      text-transform: uppercase;
      color: var(--pk-red);
      margin-bottom: 0.65rem;
    }
    .section-title {
      font-size: clamp(1.55rem, 3.2vw, 2.1rem);
      font-weight: 900;
      letter-spacing: 0.04em;
      line-height: 1.35;
      margin-bottom: 0.75rem;
    }
    .section-lead {
      color: var(--pk-muted);
      max-width: 34rem;
      font-size: 0.98rem;
    }

    /* Motto — 白地＋赤は見出しだけ */
    .motto {
      background: #fff;
      color: var(--pk-ink);
      padding: 2.25rem 0;
      border-bottom: 1px solid var(--pk-line);
    }
    .motto .wrap {
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 1.75rem;
      align-items: center;
    }
    @media (max-width: 640px) {
      .motto .wrap { grid-template-columns: 1fr; gap: 0.75rem; }
    }
    .motto-mark {
      font-family: var(--font-display);
      font-weight: 800;
      font-size: clamp(2.4rem, 6vw, 3.6rem);
      line-height: 0.9;
      letter-spacing: 0.02em;
      text-transform: uppercase;
      white-space: nowrap;
      color: var(--pk-red);
    }
    .motto p {
      font-size: 1.02rem;
      font-weight: 500;
      max-width: 36rem;
      color: var(--pk-muted);
      opacity: 1;
      border-left: 3px solid var(--pk-line);
      padding-left: 1.25rem;
    }

    /* For parents */
    .for-parents {
      background: var(--pk-sand);
      border-top: none;
    }
    .parent-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 3rem;
      align-items: start;
      margin-top: 2rem;
    }
    @media (max-width: 800px) {
      .parent-grid { grid-template-columns: 1fr; gap: 1.75rem; }
    }
    .parent-copy p + p { margin-top: 1rem; }
    .parent-copy p { color: var(--pk-muted); }
    .parent-copy strong { color: var(--pk-ink); font-weight: 700; }
    .facts {
      background: #fff;
      border: 1px solid var(--pk-line);
      border-left: 3px solid var(--pk-red);
      padding: 1.35rem 1.25rem;
      display: grid;
      gap: 1.15rem;
    }
    .facts dt {
      font-family: var(--font-mono);
      font-size: 0.7rem;
      letter-spacing: 0.16em;
      text-transform: uppercase;
      color: var(--pk-muted);
    }
    .facts dd {
      font-size: 1.15rem;
      font-weight: 700;
      margin-top: 0.15rem;
    }

    /* Practice videos */
    .practice-preview {
      background: #fff;
      border-top: 1px solid var(--pk-line);
    }
    .video-grid {
      margin-top: 1.75rem;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.25rem;
    }
    .video-grid--feature {
      grid-template-columns: 1fr 1fr;
    }
    @media (max-width: 720px) {
      .video-grid,
      .video-grid--feature {
        grid-template-columns: 1fr;
      }
    }
    .video-card {
      margin: 0;
    }
    .video-card figcaption {
      margin-top: 0.55rem;
      font-family: var(--font-mono);
      font-size: 0.72rem;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--pk-muted);
    }
    .video-frame {
      position: relative;
      width: 100%;
      aspect-ratio: 16 / 9;
      background: var(--pk-charcoal);
      overflow: hidden;
    }
    .video-frame iframe {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      border: 0;
    }
    .practice-more {
      margin-top: 1.5rem;
      display: flex;
      flex-wrap: wrap;
      gap: 0.65rem;
    }
    .practice-group + .practice-group {
      margin-top: 2.75rem;
      padding-top: 2.25rem;
      border-top: 1px solid var(--pk-line);
    }
    .practice-grade {
      font-size: 1.2rem;
      font-weight: 900;
      letter-spacing: 0.04em;
      margin-bottom: 1rem;
    }
    .practice-empty {
      color: var(--pk-muted);
      font-size: 0.95rem;
      max-width: 34rem;
    }
    .practice-archive .video-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    @media (min-width: 960px) {
      .practice-archive .video-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }

    /* Schedule — チャコール。赤はラベルのみ */
    .schedule {
      background: var(--pk-charcoal);
      color: #fff;
    }
    .schedule .section-label { color: #ff8a9a; }
    .schedule .section-lead { color: rgba(255,255,255,0.72); }
    .schedule-panel {
      margin-top: 2rem;
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.14);
      min-height: 280px;
      display: grid;
      place-items: center;
      text-align: center;
      padding: 2rem;
    }
    .schedule-panel--embed {
      display: block;
      padding: 0.75rem;
      text-align: left;
      min-height: 0;
    }
    .schedule-embed {
      display: block;
      width: 100%;
      height: min(70vh, 520px);
      border: 0;
      background: #fff;
    }
    .schedule-note {
      margin: 0.85rem 0 0.25rem;
      text-align: center;
    }
    .schedule-panel p {
      font-family: var(--font-mono);
      font-size: 0.78rem;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: rgba(255,255,255,0.55);
      margin-bottom: 0.75rem;
    }
    .schedule-panel strong {
      display: block;
      font-size: 1.15rem;
      font-weight: 700;
      letter-spacing: 0.04em;
      margin-bottom: 1.25rem;
    }

    /* Join CTA */
    .join {
      background: #fff;
    }
    .join-box {
      margin-top: 1.75rem;
      background: var(--pk-sand);
      border: 1px solid var(--pk-line);
      border-top: 3px solid var(--pk-red);
      padding: clamp(1.5rem, 4vw, 2.5rem);
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 1.5rem;
      align-items: center;
    }
    @media (max-width: 700px) {
      .join-box { grid-template-columns: 1fr; }
    }
    .join-box h3 {
      font-size: 1.35rem;
      font-weight: 900;
      letter-spacing: 0.04em;
      margin-bottom: 0.4rem;
      color: var(--pk-ink);
    }
    .join-box p { color: var(--pk-muted); font-size: 0.95rem; }
    .join-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 0.6rem;
    }
    .btn-dark {
      background: var(--pk-ink);
      color: #fff;
    }
    .btn-dark:hover { background: #000; }

    /* Footer */
    .site-footer {
      background: var(--pk-charcoal);
      color: rgba(255,255,255,0.65);
      padding: 2.25rem 0;
      font-size: 0.85rem;
      border-top: none;
    }
    .site-footer .wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 1rem;
    }
    .site-footer a { text-decoration: underline; color: rgba(255,255,255,0.85); }
    .site-footer strong { color: #fff; }

    .mock-note {
      position: fixed;
      right: 1rem;
      bottom: 1rem;
      z-index: 50;
      background: #fff;
      border: 1px solid var(--pk-line);
      border-left: 3px solid var(--pk-red);
      padding: 0.75rem 0.9rem;
      font-size: 0.75rem;
      color: var(--pk-muted);
      max-width: 15rem;
      box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    }
    .mock-note a { color: var(--pk-red); font-weight: 700; text-decoration: underline; }

    /* —— Inner pages —— */
    .site-header--solid {
      position: relative;
      background: var(--pk-charcoal);
      border-bottom: 3px solid var(--pk-red);
    }
    .page-hero {
      background: #fff;
      border-bottom: 1px solid var(--pk-line);
      padding: 2.5rem 0 2rem;
    }
    .page-title {
      font-size: clamp(1.7rem, 4vw, 2.35rem);
      font-weight: 900;
      letter-spacing: 0.04em;
      line-height: 1.3;
      margin-bottom: 0.65rem;
    }
    .page-lead {
      color: var(--pk-muted);
      max-width: 40rem;
      font-size: 1rem;
    }
    .page-body { padding-top: 2.5rem; }
    .prose {
      max-width: 42rem;
    }
    .prose h2 {
      font-size: 1.25rem;
      font-weight: 900;
      letter-spacing: 0.04em;
      margin: 2rem 0 0.75rem;
      padding-top: 0.5rem;
      border-top: 1px solid var(--pk-line);
    }
    .prose h2:first-child { border-top: 0; margin-top: 0; padding-top: 0; }
    .prose h3 {
      font-size: 1.05rem;
      font-weight: 700;
      margin: 1.5rem 0 0.5rem;
      color: var(--pk-ink);
    }
    .prose p { color: var(--pk-muted); margin-bottom: 1rem; }
    .prose ul {
      margin: 0 0 1.25rem 1.15rem;
      color: var(--pk-muted);
    }
    .prose li + li { margin-top: 0.4rem; }
    .pillars {
      list-style: none;
      margin: 1.25rem 0 1.5rem !important;
      padding: 0;
      display: grid;
      gap: 0.55rem;
    }
    .pillars li {
      border-left: 3px solid var(--pk-red);
      padding: 0.45rem 0 0.45rem 0.9rem;
      font-weight: 700;
      color: var(--pk-ink) !important;
    }
    .signoff {
      margin-top: 2rem !important;
      font-weight: 700;
      color: var(--pk-ink) !important;
      text-align: right;
    }
    .text-link {
      color: var(--pk-red) !important;
      font-weight: 700;
      text-decoration: underline;
    }
    .page-cta {
      display: flex;
      flex-wrap: wrap;
      gap: 0.7rem;
      margin-top: 2.5rem;
      padding-top: 1.5rem;
      border-top: 1px solid var(--pk-line);
    }
    .btn-ghost-dark {
      background: transparent;
      color: var(--pk-ink);
      border: 1px solid var(--pk-line);
    }
    .btn-ghost-dark:hover { border-color: var(--pk-ink); background: #fff; }
    .facts--inline {
      margin: 1rem 0 1.25rem;
      grid-template-columns: 1fr 1fr;
    }
    @media (max-width: 520px) {
      .facts--inline { grid-template-columns: 1fr; }
    }
    .class-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 0.85rem;
      margin: 1rem 0 1.5rem;
    }
    @media (max-width: 640px) {
      .class-grid { grid-template-columns: 1fr; }
    }
    .class-card {
      background: #fff;
      border: 1px solid var(--pk-line);
      border-top: 3px solid var(--pk-red);
      padding: 1rem 1.1rem;
    }
    .class-card h3 {
      margin: 0 0 0.35rem !important;
      font-size: 0.98rem;
    }
    .class-card p {
      margin: 0 !important;
      font-size: 0.88rem;
    }
    .note {
      font-size: 0.9rem;
      background: var(--pk-sand);
      border-left: 3px solid var(--pk-line);
      padding: 0.85rem 1rem;
    }
    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 0.85rem;
      margin-top: 0.45rem;
    }
    .footer-links a { text-decoration: none; font-size: 0.8rem; }
    .footer-links a:hover { text-decoration: underline; }

    /* FAQ */
    .faq-list { display: grid; gap: 0.55rem; max-width: 44rem; }
    .faq-item {
      background: #fff;
      border: 1px solid var(--pk-line);
    }
    .faq-item[open] { border-left: 3px solid var(--pk-red); }
    .faq-item summary {
      cursor: pointer;
      list-style: none;
      padding: 1rem 1.15rem;
      font-weight: 700;
      font-size: 0.98rem;
      letter-spacing: 0.02em;
    }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after {
      content: "+";
      float: right;
      color: var(--pk-red);
      font-family: var(--font-display);
      font-size: 1.2rem;
      line-height: 1;
    }
    .faq-item[open] summary::after { content: "–"; }
    .faq-answer {
      padding: 0 1.15rem 1.15rem;
      color: var(--pk-muted);
      font-size: 0.95rem;
    }

    /* Trial form */
    .form-wrap { max-width: 36rem; }
    .form-divert {
      background: var(--pk-sand);
      border-left: 3px solid var(--pk-red);
      padding: 0.9rem 1.1rem;
      margin-bottom: 1.35rem;
      font-size: 0.92rem;
      line-height: 1.55;
    }
    .form-divert a {
      color: var(--pk-red);
      font-weight: 700;
      text-decoration: underline;
      text-underline-offset: 0.15em;
    }
    .privacy-note {
      font-size: 0.88rem;
      color: var(--pk-muted);
      margin-bottom: 1.5rem;
      padding-bottom: 1rem;
      border-bottom: 1px solid var(--pk-line);
    }
    .trial-form { display: grid; gap: 1.1rem; }
    .field label {
      display: block;
      font-size: 0.82rem;
      font-weight: 700;
      letter-spacing: 0.02em;
      margin-bottom: 0.35rem;
    }
    .req {
      color: var(--pk-red);
      font-size: 0.72rem;
      font-weight: 700;
      margin-left: 0.35rem;
    }
    .field input,
    .field select,
    .field textarea {
      width: 100%;
      min-height: 2.75rem;
      padding: 0.55rem 0.75rem;
      border: 1px solid var(--pk-line);
      background: #fff;
      font-family: var(--font-jp);
      font-size: 1rem;
      color: var(--pk-ink);
    }
    .field textarea { min-height: 8rem; resize: vertical; }
    .field input:focus,
    .field select:focus,
    .field textarea:focus {
      outline: 2px solid color-mix(in srgb, var(--pk-red) 35%, transparent);
      border-color: var(--pk-red);
    }
    .form-hint { font-size: 0.82rem; color: var(--pk-muted); }
    .form-footnote {
      margin-top: 1.5rem;
      font-size: 0.85rem;
      color: var(--pk-muted);
    }
    .form-alert {
      padding: 0.95rem 1.1rem;
      margin-bottom: 1.25rem;
      font-weight: 700;
      font-size: 0.95rem;
    }
    .form-alert--ok {
      background: #eef7f0;
      border-left: 3px solid #2f7a45;
      color: #1e4d2b;
    }
    .form-alert--err {
      background: #faf0f1;
      border-left: 3px solid var(--pk-red);
      color: var(--pk-red-deep);
    }
    .hp {
      position: absolute;
      left: -9999px;
      height: 0;
      overflow: hidden;
    }

    @media (prefers-reduced-motion: reduce) {
      .btn:hover { transform: none; }
    }