/* Visual reference: https://pdlab.iis.u-tokyo.ac.jp/html/ */
:root {
    color-scheme: light;
    font-family: Inter, "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", "Meiryo", sans-serif;
    font-synthesis: none;
    line-height: 1.7;
    color: #203b3a;
    background: #f5f7f3;
    --teal: #17655b;
    --border: #dce3dc;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: flex; flex-direction: column; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; touch-action: manipulation; }
button:focus-visible, a:focus-visible, input:focus-visible { outline: 3px solid #96b96a; outline-offset: 4px; }

.header {
    width: 100%;
    max-width: 1160px;
    margin: 0 auto;
    padding: 25px 32px;
    display: flex;
    align-items: center;
    gap: 24px;
    border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 10px; font-size: 19px; font-weight: 750; letter-spacing: -.4px; }
.brand-icon { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 11px; background: var(--teal); color: #fff; }
.header-note { margin-left: auto; color: #61746b; font-size: 10px; letter-spacing: 2px; }
main { width: 100%; max-width: 1060px; margin: 0 auto; padding: 48px 32px 64px; flex: 1; }
.panel { max-width: 530px; margin: 0 auto; padding: 35px; border: 1px solid var(--border); border-radius: 18px; background: #fff; box-shadow: 0 8px 30px #203b3a03; }
.section-heading { display: flex; align-items: center; gap: 16px; margin-bottom: 25px; }
.step { display: grid; place-items: center; flex-shrink: 0; width: 42px; height: 42px; border-radius: 11px; background: #edf3e9; color: var(--teal); font-size: 13px; font-weight: 750; }
h1 { margin: 0; font-size: 20px; line-height: 1.5; overflow-wrap: anywhere; }
.section-heading p { margin: 4px 0 0; font-size: 12px; color: #61746b; }
.description { margin: 0 0 8px; font-size: 13px; color: #61746b; }
.small { margin: 8px 0 0; font-size: 11px; color: #61746b; }
.form-field { margin-top: 20px; }
label { display: block; font-size: 12px; font-weight: 650; }
input { width: 100%; min-width: 0; margin-top: 7px; padding: 11px 13px; border: 1px solid var(--border); border-radius: 8px; background: #fcfdfb; color: #203b3a; }
.primary { display: flex; align-items: center; justify-content: center; gap: 25px; width: 100%; min-height: 47px; margin-top: 24px; padding: 12px 23px; border: 0; border-radius: 9px; background: var(--teal); color: #fff; font-size: 13px; font-weight: 650; cursor: pointer; }
.primary:hover { background: #0f5249; }
footer { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px 24px; width: 100%; max-width: 1060px; margin: 0 auto; padding: 25px 32px; border-top: 1px solid var(--border); color: #61746b; font-size: 10px; }

@media (max-width: 800px) {
    .header-note { display: none; }
}
@media (max-width: 540px) {
    .header { padding: 20px; }
    .brand { font-size: 17px; }
    main { padding: 32px 20px 42px; }
    .panel { padding: 22px 18px; }
    .section-heading { gap: 12px; }
    h1 { font-size: 18px; }
    footer { padding: 23px 20px; }
}