:root {
    --sakura-pale: #fbeceb;
    --sakura-soft: #f5d6d4;
    --sakura: #e8a5a5;
    --sakura-deep: #c97b7b;
    --sky-pale: #eaf2f5;
    --sky: #b7d4e8;
    --cream: #f7f1ea;
    --ivory: #fbf7f2;
    --paper: #fffdfb;
    --brown: #8a7260;
    --brown-deep: #5a4a3f;
    --ink: #2a2522;
    --muted: #9a8a7c;
    --line: #e8ddd2;
    --gold: #b39465;
  }

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

  html, body {
    background: var(--ivory);
    color: var(--ink);
    font-family: "Shippori Mincho", "Noto Serif JP", serif;
    font-weight: 400;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  body { position: relative; }

  .en {
    font-family: "Cormorant Garamond", serif;
    font-weight: 300;
    letter-spacing: 0.08em;
  }

  /* ============ SAKURA PETAL ANIMATION ============ */
  .sakura-field {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 100;
    overflow: hidden;
  }
  .petal {
    position: absolute;
    top: -40px;
    width: 18px;
    height: 18px;
    opacity: var(--op, 0.5);
    will-change: transform, opacity;
    animation-name: petalFall, petalSway;
    animation-timing-function: linear, ease-in-out;
    animation-iteration-count: 1, infinite;
    animation-duration: 20s, 8s;
  }
  .petal svg { width: 100%; height: 100%; display: block; }

  @keyframes petalFall {
    0%   { transform: translate3d(0, -10vh, 0) rotate(0deg); opacity: 0; }
    8%   { opacity: 0.9; }
    90%  { opacity: 0.85; }
    100% { transform: translate3d(0, 110vh, 0) rotate(720deg); opacity: 0; }
  }
  @keyframes petalSway {
    0%   { margin-left: 0px; }
    25%  { margin-left: 40px; }
    50%  { margin-left: -20px; }
    75%  { margin-left: 50px; }
    100% { margin-left: 0px; }
  }

  /* ============ NAV ============ */
  .nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 44px;
    background: rgba(255, 253, 251, 0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(232, 221, 210, 0.5);
    transition: padding 0.3s ease;
  }
  .nav-brand {
    display: flex;
    align-items: center;
  }
  .nav-brand img {
    height: 40px;
    width: auto;
    display: block;
  }
  .nav-links {
    display: flex;
    gap: 36px;
    align-items: center;
  }
  .nav-links a {
    font-family: "Cormorant Garamond", serif;
    font-size: 15px;
    color: var(--ink);
    text-decoration: none;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    position: relative;
    padding: 4px 0;
    transition: color 0.3s;
  }
  .nav-links a::after {
    content: '';
    position: absolute;
    left: 0; bottom: -2px;
    width: 0; height: 1px;
    background: var(--sakura-deep);
    transition: width 0.3s;
  }
  .nav-links a:hover { color: var(--sakura-deep); }
  .nav-links a:hover::after { width: 100%; }
  .nav-links a .jp-small {
    display: block;
    font-family: "Shippori Mincho", serif;
    font-size: 13px;
    color: var(--muted);
    letter-spacing: 0.1em;
    margin-top: 1px;
    text-transform: none;
    text-align: center;
  }
  .nav-cta {
    background: var(--brown-deep);
    color: var(--paper) !important;
    padding: 10px 16px !important;
    border-radius: 2px;
    font-family: "Shippori Mincho", serif !important;
    font-size: 14px !important;
    letter-spacing: 0.2em !important;
    text-transform: none !important;
  }
  .nav-cta::after { display: none !important; }
  .nav-cta:hover { background: var(--sakura-deep); color: var(--paper) !important; }

  /* Hamburger toggle — hidden on desktop */
  .nav-toggle {
    display: none;
    position: relative;
    width: 44px;
    height: 44px;
    padding: 0;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 220;
  }
  .nav-toggle span {
    position: absolute;
    left: 10px;
    right: 10px;
    height: 1.5px;
    background: var(--ink);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.2s ease, top 0.3s ease;
  }
  .nav-toggle span:nth-child(1) { top: 15px; }
  .nav-toggle span:nth-child(2) { top: 21px; }
  .nav-toggle span:nth-child(3) { top: 27px; }
  .nav-toggle.is-open span:nth-child(1) { top: 21px; transform: rotate(45deg); }
  .nav-toggle.is-open span:nth-child(2) { opacity: 0; }
  .nav-toggle.is-open span:nth-child(3) { top: 21px; transform: rotate(-45deg); }

  /* Backdrop — hidden by default */
  .nav-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(40, 30, 26, 0.35);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    z-index: 190;
    opacity: 0;
    transition: opacity 0.3s ease;
  }
  .nav-backdrop.is-open {
    display: block;
    opacity: 1;
  }

  /* ============ HERO ============ */
  .hero {
    position: relative;
    height: 100vh;
    min-height: 720px;
    width: 100%;
    overflow: hidden;
    background: linear-gradient(180deg, #cfe0ed 0%, #e6d3dc 60%, #f5d6d4 100%);
  }
  .hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('../assets/sakura-hero.jpg');
    background-size: cover;
    background-position: center center;
  }
  .hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
      linear-gradient(180deg, rgba(255,253,251,0) 0%, rgba(255,253,251,0) 70%, rgba(247,241,234,0.65) 100%),
      linear-gradient(90deg, rgba(255,253,251,0) 40%, rgba(183,212,232,0.12) 100%);
  }
  .hero-content {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 6vw;
    z-index: 3;
  }
  .hero-main {
    max-width: 760px;
    width: 100%;
  }
  .hero-eyebrow {
    font-family: "Cormorant Garamond", serif;
    font-style: italic;
    font-size: 18px;
    color: var(--brown-deep);
    letter-spacing: 0.2em;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
  }

  .hero-title {
    font-family: "Shippori Mincho", serif;
    font-weight: 500;
    font-size: clamp(34px, 5vw, 60px);
    line-height: 1.5;
    color: var(--ink);
    letter-spacing: 4.8px;
    margin-bottom: 30px;
    text-shadow: 0 2px 30px rgba(255,255,255,0.7);
    transform: translateX(40px);
    padding-left: 15px;
  }
  .hero-title .em { color: var(--sakura-deep); }
  .hero-title .kern-comma {
    display: inline-block;
    margin-left: -0.5em;
    margin-right: -0.15em;
  }
  .hero-sub {
    font-size: 16px;
    color: var(--brown-deep);
    line-height: 2.1;
    max-width: 580px;
    margin: 0 auto 44px;
    text-shadow: 0 1px 20px rgba(255,255,255,0.6);
  }
  .hero-meta { justify-content: center; }
  .hero-meta {
    display: flex;
    gap: 14px;
    justify-content: center;
  }
  .btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    border-radius: 2px;
    font-family: "Shippori Mincho", serif;
    font-size: 16px;
    letter-spacing: 0.18em;
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
  }
  .btn-primary {
    background: var(--brown-deep);
    color: var(--paper);
  }
  .btn-primary:hover {
    background: var(--sakura-deep);
    transform: translateY(-2px);
    box-shadow: 0 12px 30px -10px rgba(90,74,63,0.4);
  }
  .btn-ghost {
    background: rgba(255,253,251,0.7);
    color: var(--ink);
    border: 1px solid var(--brown-deep);
    backdrop-filter: blur(4px);
  }
  .btn-ghost:hover {
    background: var(--paper);
    border-color: var(--sakura-deep);
    color: var(--sakura-deep);
  }
  .btn .arrow { font-size: 16px; transition: transform 0.3s; }
  .btn:hover .arrow { transform: translateX(4px); }

  .hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    z-index: 4;
    font-family: "Cormorant Garamond", serif;
    font-size: 13px;
    letter-spacing: 0.3em;
    color: var(--brown-deep);
    text-transform: uppercase;
  }
  .hero-scroll::after {
    content: '';
    display: block;
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, var(--brown-deep), transparent);
    margin: 12px auto 0;
    animation: scrollLine 2s ease-in-out infinite;
  }
  @keyframes scrollLine {
    0%, 100% { transform: scaleY(1); transform-origin: top; opacity: 1; }
    50% { transform: scaleY(0.3); transform-origin: top; opacity: 0.3; }
  }

  /* ============ SECTION BASE ============ */
  section {
    position: relative;
    z-index: 2;
  }
  .container {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 40px;
  }
  .sec-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 60px;
    text-align: center;
  }
  .sec-label .en-big {
    font-family: "Cormorant Garamond", serif;
    font-style: italic;
    font-size: 56px;
    color: var(--sakura);
    letter-spacing: 0.04em;
    line-height: 1;
    margin-bottom: 12px;
    font-weight: 300;
  }
  .sec-label .jp-title {
    font-family: "Shippori Mincho", serif;
    font-size: 20px;
    font-weight: 500;
    color: var(--ink);
    letter-spacing: 0.3em;
    position: relative;
    padding-bottom: 18px;
  }
  .sec-label .jp-title::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 24px;
    height: 1px;
    background: var(--sakura-deep);
  }

  /* ============ CONCEPT ============ */
  .concept {
    padding: 140px 0 120px;
    background: var(--ivory);
    position: relative;
  }
  .concept-intro {
    max-width: 780px;
    margin: 0 auto 90px;
    text-align: center;
  }
  .concept-intro h2 {
    font-family: "Shippori Mincho", serif;
    font-weight: 500;
    font-size: clamp(28px, 3.4vw, 42px);
    line-height: 1.7;
    color: var(--ink);
    letter-spacing: 0.08em;
    margin-bottom: 32px;
  }
  .concept-intro h2 .em { color: var(--sakura-deep); }
  .concept-intro p {
    font-size: 16px;
    color: var(--brown-deep);
    line-height: 2.1;
  }

  .concept-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 36px;
  }
  .concept-grid > .concept-card:nth-child(1),
  .concept-grid > .concept-card:nth-child(2),
  .concept-grid > .concept-card:nth-child(3) {
    grid-column: span 2;
  }
  .concept-grid > .concept-card:nth-child(4) {
    grid-column: 2 / span 2;
  }
  .concept-grid > .concept-card:nth-child(5) {
    grid-column: 4 / span 2;
  }
  .concept-card {
    background: var(--paper);
    padding: 48px 34px;
    position: relative;
    border: 1px solid var(--line);
    transition: transform 0.4s, box-shadow 0.4s;
  }
  .concept-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 50px -20px rgba(90,74,63,0.2);
  }
  .concept-card .num {
    font-family: "Cormorant Garamond", serif;
    font-style: italic;
    font-size: 48px;
    color: var(--sakura);
    line-height: 1;
    margin-bottom: 20px;
    font-weight: 300;
  }
  .concept-card h3 {
    font-family: "Shippori Mincho", serif;
    font-weight: 500;
    font-size: 20px;
    color: var(--ink);
    letter-spacing: 0.1em;
    margin-bottom: 20px;
    line-height: 1.6;
  }
  .concept-card p {
    font-size: 15px;
    color: var(--brown);
    line-height: 1.95;
  }
  .concept-card .icon {
    position: absolute;
    top: 36px;
    right: 30px;
    width: 42px;
    height: 42px;
    opacity: 0.5;
  }

  /* ============ FEATURE BAND ============ */
  .feature-band {
    position: relative;
    padding: 120px 0;
    background:
      linear-gradient(rgba(247,241,234,0.82), rgba(251,236,235,0.88)),
      url('../assets/sakura-hero.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
  }
  .feature-inner {
    max-width: 760px;
    margin: 0 auto;
    text-align: center;
    padding: 0 40px;
  }
  .feature-inner .mark {
    font-family: "Cormorant Garamond", serif;
    font-style: italic;
    font-size: 22px;
    color: var(--sakura-deep);
    letter-spacing: 0.1em;
    margin-bottom: 24px;
  }
  .feature-inner h3 {
    font-family: "Shippori Mincho", serif;
    font-weight: 500;
    font-size: clamp(26px, 3vw, 36px);
    line-height: 1.8;
    color: var(--ink);
    letter-spacing: 0.1em;
    margin-bottom: 32px;
  }
  .feature-inner p {
    font-size: 16px;
    color: var(--brown-deep);
    line-height: 2.1;
  }

  /* ============ COURSE (KITSUKE) ============ */
  .course {
    padding: 140px 0 120px;
    background: var(--paper);
  }
  .course-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  /* ===== Main Course (Full-width hero) ===== */
  .main-course {
    background: var(--ivory);
    padding: 56px 60px;
    border: 1px solid var(--line);
    margin-bottom: 36px;
    position: relative;
  }
  .main-course .ribbon {
    position: absolute;
    top: -14px;
    left: 40px;
    background: var(--sakura-deep);
    color: var(--paper);
    padding: 6px 16px;
    font-family: "Cormorant Garamond", serif;
    font-size: 13px;
    letter-spacing: 0.2em;
  }
  .main-course h3 {
    font-family: "Shippori Mincho", serif;
    font-weight: 500;
    font-size: 28px;
    color: var(--ink);
    margin-bottom: 6px;
  }
  .main-course .sub-en {
    font-family: "Cormorant Garamond", serif;
    font-style: italic;
    font-size: 14px;
    color: var(--sakura-deep);
    letter-spacing: 0.1em;
    margin-bottom: 20px;
  }
  .main-course .desc {
    font-size: 16px;
    color: var(--brown-deep);
    line-height: 1.95;
    margin-bottom: 32px;
  }
  .main-course .mc-specs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    padding: 24px 0;
    margin-bottom: 28px;
  }
  .main-course .mc-specs .spec {
    padding: 0 28px;
    border-right: 1px solid var(--line);
    text-align: center;
  }
  .main-course .mc-specs .spec:last-child { border-right: none; }
  .main-course .mc-specs .spec .label {
    font-family: "Shippori Mincho", serif;
    font-size: 13px;
    color: var(--muted);
    letter-spacing: 0.2em;
    margin-bottom: 10px;
    display: block;
  }
  .main-course .mc-specs .spec .val {
    font-family: "Noto Serif JP", "Shippori Mincho", serif;
    font-weight: 500;
    font-size: 26px;
    color: var(--ink);
    line-height: 1.2;
  }
  .main-course .mc-specs .spec .val .yen {
    font-family: "Shippori Mincho", serif;
    font-size: 13px;
    margin-left: 2px;
  }
  .main-course .mc-specs .spec .val .unit {
    font-family: "Shippori Mincho", serif;
    font-size: 13px;
    color: var(--muted);
    display: block;
    margin-top: 4px;
    letter-spacing: 0.1em;
  }
  .main-course .mc-notes {
    display: grid;
    /* grid-template-columns: 1fr 1fr; */
    gap: 8px 32px;
    list-style: none;
    font-size: 14px;
    color: var(--brown);
    line-height: 1.9;
  }
  .main-course .mc-notes li {
    padding-left: 18px;
    position: relative;
  }
  .main-course .mc-notes li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.7em;
    width: 8px;
    height: 8px;
    background-color: var(--sakura-deep);
    -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><g stroke='black' stroke-width='2.4' stroke-linecap='round'><line x1='12' y1='2' x2='12' y2='22'/><line x1='2' y1='12' x2='22' y2='12'/><line x1='4.5' y1='4.5' x2='19.5' y2='19.5'/><line x1='19.5' y1='4.5' x2='4.5' y2='19.5'/></g><circle cx='12' cy='12' r='2.2' fill='black'/></svg>") no-repeat center / contain;
            mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><g stroke='black' stroke-width='2.4' stroke-linecap='round'><line x1='12' y1='2' x2='12' y2='22'/><line x1='2' y1='12' x2='22' y2='12'/><line x1='4.5' y1='4.5' x2='19.5' y2='19.5'/><line x1='19.5' y1='4.5' x2='4.5' y2='19.5'/></g><circle cx='12' cy='12' r='2.2' fill='black'/></svg>") no-repeat center / contain;
  }
  .course-card {
    background: var(--ivory);
    padding: 50px 36px 44px;
    position: relative;
    border-top: 2px solid var(--sakura);
    display: flex;
    flex-direction: column;
  }
  .course-card .ribbon {
    position: absolute;
    top: -14px;
    left: 36px;
    background: var(--sakura-deep);
    color: var(--paper);
    padding: 5px 14px;
    font-family: "Cormorant Garamond", serif;
    font-style: italic;
    font-size: 13px;
    letter-spacing: 0.15em;
  }
  .course-card.featured .ribbon { background: var(--sakura-deep); }
  .course-card h3 {
    font-family: "Shippori Mincho", serif;
    font-weight: 500;
    font-size: 20px;
    color: var(--ink);
    letter-spacing: 0.1em;
    margin: 18px 0 8px;
  }
  .course-card .sub-en {
    font-family: "Cormorant Garamond", serif;
    font-style: italic;
    font-size: 13px;
    color: var(--muted);
    letter-spacing: 0.1em;
    margin-bottom: 22px;
  }
  .course-card .desc {
    font-size: 16px;
    color: var(--brown);
    line-height: 1.95;
    margin-bottom: 28px;
    min-height: 80px;
  }
  .course-price {
    display: flex;
    align-items: baseline;
    gap: 8px;
    padding: 20px 0;
    border-top: 1px dashed var(--line);
    border-bottom: 1px dashed var(--line);
    margin-bottom: 20px;
  }
  .course-price .label {
    font-family: "Shippori Mincho", serif;
    font-size: 13px;
    color: var(--muted);
    letter-spacing: 0.15em;
  }
  .course-price .amount {
    font-family: "Cormorant Garamond", serif;
    font-size: 38px;
    color: var(--ink);
    line-height: 1;
    font-weight: 400;
    margin-left: auto;
  }
  .course-price .yen {
    font-family: "Shippori Mincho", serif;
    font-size: 13px;
    color: var(--brown-deep);
  }
  .course-meta {
    list-style: none;
    margin-top: auto;
    border-top: 1px solid var(--line);
  }
  .course-meta li {
    font-size: 13px;
    color: var(--brown);
    padding: 14px 0;
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    line-height: 1.6;
    border-bottom: 1px solid var(--line);
  }
  .course-meta .meta-label {
    font-family: "Shippori Mincho", serif;
    color: var(--ink);
    font-size: 16px;
    flex-shrink: 0;
  }
  .course-meta .meta-val {
    font-family: "Noto Serif JP", serif;
    font-weight: 500;
    font-size: 20px;
    color: var(--ink);
    text-align: right;
    line-height: 1.3;
  }
  .course-meta .meta-val .yen {
    font-family: "Shippori Mincho", serif;
    font-size: 13px;
    margin-left: 2px;
    color: var(--brown);
  }
  .course-meta .meta-val .meta-unit {
    font-family: "Shippori Mincho", serif;
    font-size: 11px;
    color: var(--muted);
    display: block;
    font-weight: 400;
    margin-top: 2px;
    letter-spacing: 0.05em;
  }

  .entry-fee {
    margin-top: 60px;
    background: var(--cream);
    padding: 32px 40px;
    text-align: center;
    border: 1px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
  }
  .entry-fee .ttl {
    font-family: "Shippori Mincho", serif;
    font-size: 14px;
    color: var(--ink);
    letter-spacing: 0.2em;
    padding-right: 24px;
    border-right: 1px solid var(--line);
  }
  .entry-fee .amt {
    font-family: "Cormorant Garamond", serif;
    font-size: 32px;
    color: var(--sakura-deep);
  }
  .entry-fee .note {
    font-size: 13px;
    color: var(--brown);
  }

  /* ============ DISPATCH (SHUTCHO) ============ */
  .dispatch {
    padding: 140px 0 120px;
    background: var(--ivory);
    position: relative;
  }
  .dispatch-layout {
    display: block;
    max-width: 900px;
    margin: 0 auto;
  }
  .dispatch-visual {
    position: relative;
    aspect-ratio: 4/5;
    overflow: hidden;
  }
  .dispatch-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .dispatch-visual::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(90,74,63,0.15));
  }
  .dispatch-visual .corner {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--sakura-soft);
    padding: 24px 28px;
    font-family: "Shippori Mincho", serif;
    font-size: 13px;
    color: var(--brown-deep);
    line-height: 1.8;
    z-index: 2;
    max-width: 240px;
  }
  .dispatch-content .sec-label {
    align-items: flex-start;
    text-align: left;
    margin-bottom: 40px;
  }
  .dispatch-content .sec-label .jp-title::after { left: 0; transform: none; }
  .dispatch-intro {
    max-width: 760px;
    margin: 0 auto 70px;
    text-align: center;
  }
  .dispatch-intro p {
    font-size: 16px;
    color: var(--brown-deep);
    line-height: 2.1;
  }
  .dispatch-sub-label {
    display: flex;
    flex-direction: column;
    margin-bottom: 24px;
    text-align: center;
    align-items: center;
  }
  .dispatch-sub-label .en {
    font-family: "Cormorant Garamond", serif;
    font-style: italic;
    font-size: 22px;
    color: var(--sakura-deep);
    letter-spacing: 0.1em;
  }
  .dispatch-sub-label .jp {
    font-family: "Shippori Mincho", serif;
    font-size: 16px;
    color: var(--ink);
    letter-spacing: 0.2em;
    margin-top: 4px;
  }

  /* ===== Curriculum ===== */
  .curriculum { margin-top: 100px; }
  .curriculum-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 50px;
  }
  .curriculum-head .en-mini {
    font-family: "Cormorant Garamond", serif;
    font-style: italic;
    font-size: 20px;
    color: var(--sakura-deep);
    letter-spacing: 0.15em;
    margin-bottom: 8px;
  }
  .curriculum-head h3 {
    font-family: "Shippori Mincho", serif;
    font-weight: 500;
    font-size: 20px;
    color: var(--ink);
    letter-spacing: 0.2em;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 18px;
  }
  .curriculum-head h3::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 24px;
    height: 1px;
    background: var(--sakura-deep);
  }
  .curriculum-head p {
    font-size: 16px;
    color: var(--brown-deep);
    line-height: 2;
  }
  .curriculum-head p strong { color: var(--sakura-deep); font-weight: 500; }

  .curriculum-cols {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    margin-bottom: 50px;
  }
  .curriculum-card {
    background: var(--ivory);
    border: 1px solid var(--line);
    padding: 40px 36px;
  }
  .cc-head {
    display: flex;
    gap: 18px;
    align-items: flex-start;
    padding-bottom: 24px;
    border-bottom: 1px dashed var(--line);
    margin-bottom: 24px;
  }
  .cc-tag {
    font-family: "Cormorant Garamond", serif;
    font-style: italic;
    font-size: 42px;
    color: var(--sakura);
    line-height: 1;
    font-weight: 300;
  }
  .cc-ttl {
    font-family: "Shippori Mincho", serif;
    font-size: 20px;
    color: var(--ink);
    letter-spacing: 0.12em;
    font-weight: 500;
    margin-bottom: 4px;
  }
  .cc-sub {
    font-family: "Cormorant Garamond", serif;
    font-style: italic;
    font-size: 13px;
    color: var(--muted);
    letter-spacing: 0.1em;
  }
  .cc-list {
    list-style: none;
  }
  .cc-list li {
    display: flex;
    gap: 14px;
    padding: 10px 0;
    font-size: 16px;
    color: var(--ink);
    line-height: 1.7;
    border-bottom: 1px solid rgba(232,221,210,0.5);
  }
  .cc-list li:last-child { border-bottom: none; }
  .cc-list li span {
    font-family: "Cormorant Garamond", serif;
    font-size: 15px;
    color: var(--sakura-deep);
    font-weight: 500;
    letter-spacing: 0.1em;
    flex-shrink: 0;
    width: 22px;
  }

  .curriculum-note {
    background: var(--paper);
    border: 1px solid var(--line);
    padding: 32px 40px;
    margin-top: 50px;
  }
  .curriculum-note h4 {
    font-family: "Shippori Mincho", serif;
    font-size: 16px;
    color: var(--ink);
    letter-spacing: 0.2em;
    margin-bottom: 18px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--line);
    font-weight: 500;
  }
  .curriculum-note ul {
    list-style: none;
    display: grid;
    /* grid-template-columns: 1fr 1fr; */
    gap: 8px 36px;
  }
  .curriculum-note ul li {
    font-size: 14px;
    color: var(--brown);
    line-height: 1.9;
    padding-left: 24px;
    position: relative;
  }
  .curriculum-note ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.55em;
    width: 13px;
    height: 13px;
    background-color: var(--sakura-deep);
    -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><g stroke='black' stroke-width='2.4' stroke-linecap='round'><line x1='12' y1='2' x2='12' y2='22'/><line x1='2' y1='12' x2='22' y2='12'/><line x1='4.5' y1='4.5' x2='19.5' y2='19.5'/><line x1='19.5' y1='4.5' x2='4.5' y2='19.5'/></g><circle cx='12' cy='12' r='2.2' fill='black'/></svg>") no-repeat center / contain;
            mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><g stroke='black' stroke-width='2.4' stroke-linecap='round'><line x1='12' y1='2' x2='12' y2='22'/><line x1='2' y1='12' x2='22' y2='12'/><line x1='4.5' y1='4.5' x2='19.5' y2='19.5'/><line x1='19.5' y1='4.5' x2='4.5' y2='19.5'/></g><circle cx='12' cy='12' r='2.2' fill='black'/></svg>") no-repeat center / contain;
  }

  /* ===== Dispatch Detail ===== */
  .dispatch-detail {
    margin-top: 90px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .dd-col {
    background: var(--paper);
    padding: 40px 32px;
    border: 1px solid var(--line);
  }
  .dd-head {
    display: flex;
    gap: 14px;
    align-items: center;
    margin-bottom: 22px;
    padding-bottom: 16px;
    border-bottom: 1px dashed var(--line);
  }
  .dd-num {
    font-family: "Cormorant Garamond", serif;
    font-style: italic;
    font-size: 32px;
    color: var(--sakura);
    line-height: 1;
    font-weight: 300;
    /* 欧文数字と和文タイトルの視覚的中央を合わせる微調整 */
    transform: translateY(0.06em);
  }
  .dd-head h4 {
    font-family: "Shippori Mincho", serif;
    font-size: 16px;
    color: var(--ink);
    letter-spacing: 0.15em;
    line-height: 1.6;
    font-weight: 500;
    flex: 1;
  }
  .dd-list {
    list-style: none;
  }
  .dd-list li {
    font-size: 15px;
    color: var(--brown-deep);
    padding: 7px 0 7px 16px;
    position: relative;
    line-height: 1.75;
  }
  .dd-list li::before {
    content: '';
    position: absolute;
    left: 0; top: 14px;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--sakura);
  }
  .dd-note {
    margin-top: 18px;
    font-size: 13px;
    color: var(--muted);
    line-height: 1.85;
    padding-top: 14px;
    border-top: 1px solid var(--line);
  }
  .dd-note-lg {
    font-size: 16px;
    color: var(--brown-deep);
    line-height: 1.95;
  }
  .dd-area-list {
    list-style: none;
  }
  .dd-area-list li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 10px 0;
    font-size: 13px;
    color: var(--ink);
    line-height: 1.7;
    border-bottom: 1px dashed var(--line);
  }
  .dd-area-list li:last-child { border-bottom: none; }
  .dd-area-list .free,
  .dd-area-list .paid {
    font-family: "Shippori Mincho", serif;
    font-size: 11px;
    padding: 3px 10px;
    letter-spacing: 0.1em;
    flex-shrink: 0;
    margin-top: 2px;
  }
  .dd-area-list .free {
    background: var(--sakura-pale);
    color: var(--sakura-deep);
  }
  .dd-area-list .paid {
    background: var(--cream);
    color: var(--brown);
  }
  .dd-flow {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 14px;
  }
  .dd-flow li {
    display: flex;
    gap: 14px;
    font-size: 13px;
    color: var(--brown-deep);
    line-height: 1.7;
  }
  .dd-flow .f-num {
    width: 28px; height: 28px;
    border-radius: 50%;
    background: var(--sakura-soft);
    color: var(--sakura-deep);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: "Cormorant Garamond", serif;
    font-size: 14px;
    flex-shrink: 0;
    font-weight: 500;
  }
  .dd-flow b {
    font-family: "Shippori Mincho", serif;
    color: var(--ink);
    font-weight: 500;
    font-size: 14px;
  }
  .dispatch-content p.lead {
    font-size: 16px;
    color: var(--brown-deep);
    line-height: 2.1;
    margin-bottom: 36px;
  }

  .price-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 28px;
  }
  .price-table tr {
    border-bottom: 1px solid var(--line);
  }
  .price-table tr:first-child { border-top: 1px solid var(--line); }
  .price-table th, .price-table td {
    padding: 16px 8px;
    text-align: left;
    font-weight: 400;
  }
  .price-table th {
    font-family: "Shippori Mincho", serif;
    font-size: 16px;
    color: var(--ink);
    letter-spacing: 0.1em;
    width: 60%;
  }
  .price-table td {
    font-family: "Noto Serif JP", "Shippori Mincho", serif;
    font-weight: 500;
    font-size: 20px;
    color: var(--brown-deep);
    text-align: right;
  }
  .price-table td .yen {
    font-family: "Shippori Mincho", serif;
    font-size: 13px;
    margin-left: 2px;
    color: var(--brown);
  }
  .price-notes {
    font-size: 13px;
    color: var(--ink);
    line-height: 1.9;
    list-style: none;
  }
  .price-notes li {
    padding: 6px 0 6px 22px;
    position: relative;
  }
  .price-notes li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.95em;
    width: 12px;
    height: 12px;
    background-color: var(--sakura-deep);
    -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><g stroke='black' stroke-width='2.4' stroke-linecap='round'><line x1='12' y1='2' x2='12' y2='22'/><line x1='2' y1='12' x2='22' y2='12'/><line x1='4.5' y1='4.5' x2='19.5' y2='19.5'/><line x1='19.5' y1='4.5' x2='4.5' y2='19.5'/></g><circle cx='12' cy='12' r='2.2' fill='black'/></svg>") no-repeat center / contain;
            mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><g stroke='black' stroke-width='2.4' stroke-linecap='round'><line x1='12' y1='2' x2='12' y2='22'/><line x1='2' y1='12' x2='22' y2='12'/><line x1='4.5' y1='4.5' x2='19.5' y2='19.5'/><line x1='19.5' y1='4.5' x2='4.5' y2='19.5'/></g><circle cx='12' cy='12' r='2.2' fill='black'/></svg>") no-repeat center / contain;
  }

  /* ============ TEACHER ============ */
  .teacher {
    padding: 140px 0;
    background: var(--cream);
    position: relative;
  }
  .teacher-wrap {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 80px;
    align-items: center;
  }
  .teacher-content .sec-label {
    align-items: flex-start;
    text-align: left;
  }
  .teacher-content .sec-label .jp-title::after { left: 0; transform: none; }
  .teacher-content h2 {
    font-family: "Shippori Mincho", serif;
    font-weight: 500;
    font-size: 32px;
    color: var(--ink);
    letter-spacing: 0.1em;
    margin: 8px 0 28px;
    line-height: 1.6;
  }
  .teacher-content h2 .name-en {
    display: block;
    font-family: "Cormorant Garamond", serif;
    font-style: italic;
    font-size: 16px;
    color: var(--sakura-deep);
    letter-spacing: 0.15em;
    margin-top: 10px;
    font-weight: 300;
  }
  .teacher-content p {
    font-size: 16px;
    color: var(--brown-deep);
    line-height: 2.2;
    margin-bottom: 24px;
  }
  .teacher-content .sig {
    font-family: "Cormorant Garamond", serif;
    font-style: italic;
    font-size: 18px;
    color: var(--brown);
    margin-top: 12px;
  }
  .teacher-visual {
    position: relative;
    aspect-ratio: 3/4;
  }
  .teacher-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .teacher-visual .frame {
    position: absolute;
    inset: 18px -18px -18px 18px;
    border: 1px solid var(--sakura);
    z-index: -1;
  }

  /* ============ ACCESS ============ */
  .access {
    padding: 140px 0 120px;
    background: var(--paper);
  }
  .access-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 50px;
  }
  .access-info dl {
    display: grid;
    grid-template-columns: 120px 1fr;
    row-gap: 20px;
    column-gap: 24px;
    max-width: 900px;
    margin: 0 auto;
  }
  .access-directions {
    max-width: 900px;
    margin: 40px auto 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .access-directions .dir-block h4 {
    font-family: "Shippori Mincho", serif;
    font-size: 15px;
    color: var(--ink);
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--line);
    font-weight: 500;
  }
  .access-directions .dir-block h4 .walk {
    font-family: "Cormorant Garamond", serif;
    font-size: 13px;
    color: var(--sakura-deep);
    margin-left: 8px;
    letter-spacing: 0.1em;
  }
  .access-directions .dir-block p {
    font-size: 13px;
    line-height: 1.95;
    color: var(--brown-deep);
  }
  @media (max-width: 820px) {
    .access-directions { grid-template-columns: 1fr; gap: 24px; }
    .access-info dl { grid-template-columns: 90px 1fr; }
  }
  .access-info dt {
    font-family: "Shippori Mincho", serif;
    font-size: 13px;
    color: var(--muted);
    letter-spacing: 0.2em;
    padding-top: 3px;
  }
  .access-info dd {
    font-size: 16px;
    color: var(--ink);
    line-height: 1.9;
    padding-bottom: 3px;
    border-bottom: 1px solid var(--line);
  }
  .access-info dd a { color: var(--brown-deep); text-decoration: none; }
  .access-info dd a:hover { color: var(--sakura-deep); }
  .access-map {
    aspect-ratio: 16/6;
    width: 100vw;
    margin-left: calc(-50vw + 50%);
    background: var(--cream);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--line);
  }
  .access-map iframe {
    width: 100%;
    height: 100%;
    border: 0;
  }

  /* ============ CTA ============ */
  .cta {
    padding: 100px 0;
    background:
      linear-gradient(rgba(90,74,63,0.78), rgba(90,74,63,0.85)),
      url('../assets/sakura-hero.jpg');
    background-size: cover;
    background-position: center;
    text-align: center;
    color: var(--paper);
  }
  .cta h2 {
    font-family: "Shippori Mincho", serif;
    font-weight: 500;
    font-size: clamp(26px, 3.2vw, 38px);
    letter-spacing: 0.12em;
    margin-bottom: 20px;
    line-height: 1.7;
  }
  .cta p {
    font-size: 16px;
    opacity: 0.9;
    line-height: 2;
    max-width: 540px;
    margin: 0 auto 40px;
  }
  .cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
  }
  .cta .btn-primary {
    background: var(--paper);
    color: var(--brown-deep);
  }
  .cta .btn-primary:hover {
    background: var(--sakura-soft);
    color: var(--ink);
  }
  .cta .btn-ghost {
    background: transparent;
    color: var(--paper);
    border-color: rgba(255,253,251,0.7);
  }
  .cta .btn-ghost:hover {
    background: rgba(255,253,251,0.1);
    color: var(--paper);
    border-color: var(--paper);
  }

  /* ============ FOOTER ============ */
  footer {
    background: var(--ink);
    color: #d6cfc6;
    padding: 80px 0 30px;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 60px;
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(214,207,198,0.15);
  }
  .footer-brand .mark {
    font-family: "Cormorant Garamond", serif;
    font-style: italic;
    font-size: 24px;
    color: var(--sakura-soft);
    letter-spacing: 0.08em;
    margin-bottom: 10px;
  }
  .footer-brand .name {
    font-family: "Shippori Mincho", serif;
    font-size: 17px;
    color: var(--paper);
    letter-spacing: 0.15em;
    margin-bottom: 20px;
  }
  .footer-brand p {
    font-size: 13px;
    line-height: 1.9;
    opacity: 0.75;
  }
  footer h4 {
    font-family: "Cormorant Garamond", serif;
    font-style: italic;
    font-size: 15px;
    color: var(--sakura-soft);
    letter-spacing: 0.15em;
    margin-bottom: 20px;
    font-weight: 400;
  }
  footer ul { list-style: none; }
  footer ul li {
    padding: 5px 0;
    font-size: 13px;
  }
  footer ul li a {
    color: #d6cfc6;
    text-decoration: none;
    opacity: 0.8;
    transition: all 0.3s;
  }
  footer ul li a:hover { color: var(--sakura-soft); opacity: 1; }
  .footer-bottom {
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: "Cormorant Garamond", serif;
    font-size: 13px;
    letter-spacing: 0.1em;
    opacity: 0.5;
  }

  /* ============ RESPONSIVE ============ */
  @media (max-width: 900px) {
    .nav { padding: 14px 20px; }
    .nav-brand img { height: 34px; }

    /* Show hamburger */
    .nav-toggle { display: block; }

    /* Turn links into a slide-in drawer */
    .nav-links {
      position: fixed;
      top: 0;
      right: 0;
      bottom: 0;
      width: min(84vw, 340px);
      height: 100vh;
      min-height: 100vh;
      left: auto;
      flex-direction: column;
      align-items: stretch;
      justify-content: flex-start;
      gap: 0;
      padding: 88px 32px 40px;
      background: var(--paper);
      box-shadow: -10px 0 40px rgba(60, 40, 30, 0.08);
      transform: translateX(100%);
      transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
      z-index: 210;
      overflow-y: auto;
      -webkit-overflow-scrolling: touch;
      display: flex;
      will-change: transform;
    }
    .nav-links.is-open { transform: translateX(0) !important; }

    .nav-links a {
      display: block !important;
      padding: 16px 0;
      font-size: 16px;
      border-bottom: 1px solid rgba(232, 221, 210, 0.6);
      text-align: left;
    }
    .nav-links a::after { display: none; }
    .nav-links a .jp-small {
      text-align: left;
      margin-top: 3px;
      font-size: 13px;
    }

    .nav-cta {
      margin-top: 20px;
      text-align: center;
      border-bottom: none !important;
      padding: 14px 16px !important;
    }

    .hero-kanji { display: none; }
    .hero-main { padding-top: 30px; }
    .hero-title {
      transform: none;
      letter-spacing: 1px;
      font-size: clamp(24px, 7vw, 42px);
      line-height: 1.4;
    }
    .hero-eyebrow {
      font-size: 16px;
      margin-bottom: 20px;
    }
    .hero-sub {
      font-size: 15px;
      margin-bottom: 36px;
    }
    .kern-comma {
      margin: 0px -11px 0px -5px !important;
    }
    .btn {
      padding: 12px 20px;
      font-size: 14px;
      gap: 8px;
    }
    .btn .arrow { font-size: 14px; }
    .concept-grid { display: block;}
    .concept-grid > * {
    margin-bottom: 24px;
    width: 100%;
    display: block;
    }
    .concept-grid > *:last-child {
    margin-bottom: 0;
    }
    .dispatch-layout, .course-grid, .access-grid { grid-template-columns: 1fr; }
    .dispatch-layout, .teacher-wrap, .access-grid { gap: 40px; }
    .teacher-wrap { grid-template-columns: none; }
    .main-course { padding: 40px 24px; }
    .main-course .mc-specs { grid-template-columns: 1fr 1fr; gap: 20px 0; }
    .main-course .mc-specs .spec { padding: 12px 16px; }
    .main-course .mc-specs .spec:nth-child(2n) { border-right: none; }
    .main-course .mc-notes { grid-template-columns: 1fr; }
    .curriculum-cols { grid-template-columns: 1fr; }
    .curriculum-note ul { grid-template-columns: 1fr; }
    .dispatch-detail { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
    .container { padding: 0 24px; }
    section { padding: 90px 0 !important; }
  }
}

/* ============ UTILITY: SPACING ============ */

/* Margin Top */
.u-mt-8 { margin-top: 8px !important; }
.u-mt-16 { margin-top: 16px !important; }
.u-mt-24 { margin-top: 24px !important; }
.u-mt-32 { margin-top: 32px !important; }
.u-mt-40 { margin-top: 40px !important; }
.u-mt-48 { margin-top: 48px !important; }
.u-mt-56 { margin-top: 56px !important; }
.u-mt-64 { margin-top: 64px !important; }

/* Margin Bottom */
.u-mb-8 { margin-bottom: 8px !important; }
.u-mb-16 { margin-bottom: 16px !important; }
.u-mb-24 { margin-bottom: 24px !important; }
.u-mb-32 { margin-bottom: 32px !important; }
.u-mb-40 { margin-bottom: 40px !important; }
.u-mb-48 { margin-bottom: 48px !important; }
.u-mb-56 { margin-bottom: 56px !important; }
.u-mb-64 { margin-bottom: 64px !important; }

/* Margin Y (top & bottom) */
.u-my-8 { margin-top: 8px !important; margin-bottom: 8px !important; }
.u-my-16 { margin-top: 16px !important; margin-bottom: 16px !important; }
.u-my-24 { margin-top: 24px !important; margin-bottom: 24px !important; }
.u-my-32 { margin-top: 32px !important; margin-bottom: 32px !important; }
.u-my-40 { margin-top: 40px !important; margin-bottom: 40px !important; }
.u-my-48 { margin-top: 48px !important; margin-bottom: 48px !important; }
.u-my-56 { margin-top: 56px !important; margin-bottom: 56px !important; }
.u-my-64 { margin-top: 64px !important; margin-bottom: 64px !important; }

/* Padding Top */
.u-pt-8 { padding-top: 8px !important; }
.u-pt-16 { padding-top: 16px !important; }
.u-pt-24 { padding-top: 24px !important; }
.u-pt-32 { padding-top: 32px !important; }
.u-pt-40 { padding-top: 40px !important; }
.u-pt-48 { padding-top: 48px !important; }
.u-pt-56 { padding-top: 56px !important; }
.u-pt-64 { padding-top: 64px !important; }

/* Padding Bottom */
.u-pb-8 { padding-bottom: 8px !important; }
.u-pb-16 { padding-bottom: 16px !important; }
.u-pb-24 { padding-bottom: 24px !important; }
.u-pb-32 { padding-bottom: 32px !important; }
.u-pb-40 { padding-bottom: 40px !important; }
.u-pb-48 { padding-bottom: 48px !important; }
.u-pb-56 { padding-bottom: 56px !important; }
.u-pb-64 { padding-bottom: 64px !important; }

/* Padding Y (top & bottom) */
.u-py-8 { padding-top: 8px !important; padding-bottom: 8px !important; }
.u-py-16 { padding-top: 16px !important; padding-bottom: 16px !important; }
.u-py-24 { padding-top: 24px !important; padding-bottom: 24px !important; }
.u-py-32 { padding-top: 32px !important; padding-bottom: 32px !important; }
.u-py-40 { padding-top: 40px !important; padding-bottom: 40px !important; }
.u-py-48 { padding-top: 48px !important; padding-bottom: 48px !important; }
.u-py-56 { padding-top: 56px !important; padding-bottom: 56px !important; }
.u-py-64 { padding-top: 64px !important; padding-bottom: 64px !important; }