:root {
      color-scheme: light;
      --bg: #f6f4ee;
      --bg-soft: rgba(255, 255, 255, 0.54);
      --bg-strong: rgba(255, 255, 255, 0.78);
      --ink: #2f3433;
      --ink-soft: #5a625f;
      --charcoal: #242a2b;
      --navy: #314250;
      --line: rgba(49, 66, 80, 0.14);
      --line-strong: rgba(49, 66, 80, 0.24);
      --section-surface: rgba(255, 255, 255, 0.42);
      --shell: min(1180px, calc(100% - 32px));
      --font-sans: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", sans-serif;
      --font-serif: "Shippori Mincho", "Yu Mincho", serif;
      --shadow-soft: none;
    }

    *,
    *::before,
    *::after {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      min-width: 320px;
      color: var(--ink);
      background: var(--bg);
      font-family: var(--font-sans);
      line-height: 1.84;
      letter-spacing: 0.01em;
      overflow-x: hidden;
    }

    body::before {
      position: fixed;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(82, 96, 90, 0.018) 1px, transparent 1px),
        linear-gradient(180deg, rgba(82, 96, 90, 0.014) 1px, transparent 1px);
      background-size: 36px 36px;
      mask: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.55) 14%, rgba(0, 0, 0, 0.55) 88%, transparent);
      content: "";
      pointer-events: none;
      z-index: -1;
      opacity: 0.75;
    }

    img {
      display: block;
      max-width: 100%;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    button,
    input,
    select,
    textarea {
      font: inherit;
    }

    h1,
    h2,
    h3,
    p,
    ul,
    li,
    dl,
    dd,
    dt,
    figure {
      margin: 0;
    }

    ul {
      padding: 0;
      list-style: none;
    }

    .shell {
      width: var(--shell);
      margin: 0 auto;
    }

    .page {
      padding: 0 0 88px;
    }

    .hero {
      position: relative;
      min-height: min(78vh, 760px);
      padding: clamp(48px, 7vw, 96px) 0 64px;
      overflow: hidden;
      background:
        linear-gradient(
          90deg,
          rgba(246, 244, 238, 0.98) 0%,
          rgba(246, 244, 238, 0.94) 36%,
          rgba(246, 244, 238, 0.72) 58%,
          rgba(246, 244, 238, 0.28) 100%
        ),
        url("../images/lab-session.jpg");
      background-size: cover;
      background-position: center right;
      background-repeat: no-repeat;
      isolation: isolate;
    }

    .hero::before {
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(49, 66, 80, 0.03) 1px, transparent 1px),
        linear-gradient(180deg, rgba(49, 66, 80, 0.024) 1px, transparent 1px),
        radial-gradient(circle at 78% 38%, rgba(255, 255, 255, 0.3), transparent 34%);
      background-size: 48px 48px, 48px 48px, auto;
      content: "";
      z-index: 0;
      pointer-events: none;
    }

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

    .hero__grid {
      display: grid;
      grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.82fr);
      gap: clamp(36px, 5vw, 72px);
      align-items: center;
    }

    .hero__content {
      max-width: 640px;
    }

    .hero__eyebrow,
    .section-label,
    .panel-label {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: #3b4a45;
      font-size: 0.75rem;
      font-weight: 700;
      letter-spacing: 0.18em;
      text-transform: uppercase;
    }

    .hero__eyebrow::before,
    .section-label::before,
    .panel-label::before {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #c7b07c;
      content: "";
    }

    .hero__eyebrow {
      margin-bottom: 22px;
    }

    h1,
    h2,
    h3 {
      color: var(--charcoal);
      font-family: var(--font-serif);
      letter-spacing: 0.02em;
    }

    .hero h1 {
      max-width: none;
      font-size: clamp(3.2rem, 6vw, 5.2rem);
      line-height: 1.04;
      text-wrap: balance;
      white-space: nowrap;
    }

    .hero__lead {
      margin-top: 24px;
      display: grid;
      gap: 10px;
      max-width: none;
      color: var(--navy);
      white-space: normal;
    }

    .hero__lead-main,
    .hero__lead-sub {
      display: block;
      white-space: nowrap;
    }

    .hero__lead-main {
      font-size: clamp(1.26rem, 2.5vw, 1.64rem);
      line-height: 1.52;
      letter-spacing: 0.02em;
    }

    .hero__lead-sub {
      color: rgba(49, 66, 80, 0.76);
      font-size: clamp(1rem, 1.9vw, 1.18rem);
      line-height: 1.7;
      letter-spacing: 0.03em;
    }

    .hero__note {
      max-width: none;
      margin-top: 20px;
      color: var(--ink-soft);
      font-size: 0.98rem;
      line-height: 1.9;
      white-space: nowrap;
    }

    .hero__note br {
      display: block;
    }

    .button-row {
      display: flex;
      flex-wrap: wrap;
      gap: 0;
      margin-top: 30px;
    }

    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
      padding: 0 26px;
      border: 1px solid var(--navy);
      border-radius: 4px;
      color: var(--navy);
      font-size: 0.96rem;
      font-weight: 700;
      letter-spacing: 0.08em;
      transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease, opacity 180ms ease;
    }

    .button:hover,
    .button:focus-visible {
      opacity: 0.86;
      outline: none;
    }

    .button--primary {
      background: var(--navy);
      border-color: var(--navy);
      color: #ffffff;
    }

    .hero__aside {
      justify-self: end;
      width: min(100%, 400px);
    }

    .hero__panel {
      padding: 24px 24px 20px;
      border: 1px solid rgba(49, 66, 80, 0.16);
      background: rgba(255, 255, 255, 0.52);
      backdrop-filter: blur(10px);
    }

    .hero__panel-label {
      margin-bottom: 18px;
    }

    .hero__panel-list {
      display: grid;
      gap: 0;
    }

    .hero__panel-list li {
      display: grid;
      grid-template-columns: minmax(0, 1fr);
      gap: 4px;
      padding: 16px 0;
      border-top: 1px solid rgba(49, 66, 80, 0.12);
    }

    .hero__panel-list li:first-child {
      border-top: 1px solid rgba(49, 66, 80, 0.18);
    }

    .hero__panel-list strong {
      color: var(--charcoal);
      font-family: var(--font-serif);
      font-size: 1.1rem;
      line-height: 1.4;
      font-weight: 600;
    }

    .hero__panel-list span {
      color: rgba(49, 66, 80, 0.58);
      font-size: 0.74rem;
      letter-spacing: 0.14em;
      text-transform: uppercase;
    }

    .entry-layout {
      display: grid;
      grid-template-columns: 1fr;
      gap: 0;
      align-items: start;
      margin-top: 54px;
      max-width: 960px;
      margin-left: auto;
      margin-right: auto;
    }

    .entry-panel {
      position: relative;
      z-index: 0;
      padding: clamp(42px, 6vw, 72px) 0;
      border: none;
      background: transparent;
    }

    .entry-panel::before {
      position: absolute;
      inset: 0 calc(50% - 50vw);
      background:
        linear-gradient(90deg, rgba(49, 66, 80, 0.018) 1px, transparent 1px),
        linear-gradient(180deg, rgba(49, 66, 80, 0.014) 1px, transparent 1px);
      background-size: 40px 40px;
      content: "";
      opacity: 0.32;
      pointer-events: none;
      z-index: -1;
    }

    .entry-panel > * {
      position: relative;
      z-index: 1;
    }

    .entry-panel h2 {
      margin-top: 12px;
      font-size: clamp(1.9rem, 3vw, 2.6rem);
      line-height: 1.26;
    }

    .entry-panel p {
      margin-top: 14px;
      color: var(--ink-soft);
      font-size: 0.96rem;
      line-height: 1.9;
    }

    .institution-record {
      margin-top: 34px;
      border-top: 1px solid rgba(49, 66, 80, 0.18);
      border-bottom: none;
    }

    .institution-record div {
      display: grid;
      grid-template-columns: 180px minmax(0, 1fr);
      gap: 24px;
      align-items: start;
      padding: 20px 0;
    }

    .institution-record div + div {
      border-top: 1px solid rgba(49, 66, 80, 0.12);
    }

    .institution-record dt {
      color: rgba(49, 66, 80, 0.58);
      font-size: 0.68rem;
      font-weight: 700;
      letter-spacing: 0.16em;
      text-transform: uppercase;
    }

    .institution-record dd {
      color: var(--charcoal);
      font-family: var(--font-serif);
      font-size: 1.04rem;
      line-height: 1.56;
      letter-spacing: 0.04em;
    }

    .form-intro {
      margin-top: 18px;
      color: var(--ink-soft);
      font-size: 0.96rem;
      line-height: 1.9;
    }

    .entry-form {
      margin-top: 28px;
    }

    #entry-form-section {
      margin-top: 0;
      border-top: 1px solid rgba(49, 66, 80, 0.16);
    }

    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 22px 20px;
    }

    .field,
    .field--full,
    .form-footer,
    .form-actions,
    .form-footnote {
      min-width: 0;
    }

    .field--full,
    .form-footer,
    .form-actions,
    .form-footnote {
      grid-column: 1 / -1;
    }

    .field-label {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 10px;
      color: var(--charcoal);
      font-size: 0.93rem;
      font-weight: 700;
      letter-spacing: 0.02em;
    }

    .field-required {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-width: 38px;
      min-height: 22px;
      padding: 0 8px;
      border: 1px solid rgba(49, 66, 80, 0.14);
      color: rgba(49, 66, 80, 0.68);
      font-size: 0.68rem;
      font-weight: 700;
      letter-spacing: 0.12em;
      text-transform: uppercase;
    }

    input,
    select,
    textarea {
      width: 100%;
      border: 1px solid rgba(49, 66, 80, 0.18);
      border-radius: 4px;
      background: rgba(255, 255, 255, 0.58);
      color: var(--charcoal);
      transition: border-color 180ms ease, background-color 180ms ease, box-shadow 180ms ease;
    }

    input,
    select {
      min-height: 52px;
      padding: 0 16px;
    }

    textarea {
      min-height: 220px;
      padding: 15px 16px;
      resize: vertical;
    }

    input::placeholder,
    textarea::placeholder,
    select {
      color: rgba(49, 66, 80, 0.48);
    }

    input:focus,
    select:focus,
    textarea:focus {
      border-color: rgba(49, 66, 80, 0.72);
      background: rgba(255, 255, 255, 0.9);
      box-shadow: 0 0 0 3px rgba(49, 66, 80, 0.08);
      outline: none;
    }

    .form-footer {
      margin-top: 6px;
      padding-top: 18px;
      border-top: 1px solid rgba(49, 66, 80, 0.12);
      color: var(--ink-soft);
      font-size: 0.92rem;
      line-height: 1.86;
    }

    .form-actions {
      margin-top: 8px;
    }

    .form-actions .button {
      width: 100%;
      min-height: 56px;
    }

    .form-policy {
      margin-top: 18px;
      color: rgba(49, 66, 80, 0.62);
      font-size: 0.86rem;
      line-height: 1.8;
    }

    .form-policy a {
      color: var(--navy);
      text-decoration: underline;
      text-underline-offset: 3px;
    }

    .form-footnote {
      margin-top: 4px;
      color: rgba(49, 66, 80, 0.62);
      font-size: 0.86rem;
      line-height: 1.82;
    }

    .page-footer {
      width: var(--shell);
      margin: 46px auto 0;
      padding-top: 22px;
      border-top: 1px solid rgba(51, 68, 83, 0.12);
      color: var(--ink-soft);
      font-size: 0.86rem;
      line-height: 1.78;
    }

    @media (max-width: 1100px) {
      .hero__grid {
        grid-template-columns: 1fr;
      }

      .hero__aside {
        justify-self: stretch;
        width: 100%;
      }
    }

    @media (max-width: 760px) {
      .page {
        padding-top: 0;
      }

      .hero {
        min-height: auto;
        padding: 32px 0 40px;
        background-position: 72% center;
      }

      .hero h1 {
        max-width: none;
        font-size: clamp(2.6rem, 10vw, 4.2rem);
        white-space: nowrap;
      }

      .hero__lead,
      .hero__note {
        max-width: none;
      }

      .hero__lead-main,
      .hero__lead-sub {
        white-space: normal;
      }

      .hero__note {
        font-size: 0.92rem;
      }

      .entry-panel {
        padding: clamp(36px, 10vw, 48px) 0;
      }

      .institution-record div {
        grid-template-columns: 1fr;
        gap: 8px;
      }

      .form-grid {
        grid-template-columns: 1fr;
        gap: 18px;
      }

      .field--full,
      .form-footer,
      .form-actions,
      .form-footnote {
        grid-column: auto;
      }

      input,
      select {
        min-height: 50px;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      html {
        scroll-behavior: auto;
      }

      .button,
      input,
      select,
      textarea {
        transition: none;
      }
    }