:root {
  --navy: #0a2e52;
  --blue: #1668a9;
  --sky: #58b7e8;
  --pale: #eaf7ff;
  --ice: #f5fbff;
  --ink: #17324b;
  --muted: #63798c;
  --line: #cfe4f2;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; background: #dcecf6; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 4%, rgba(255,255,255,.9) 0 12%, transparent 38%),
    linear-gradient(135deg, #eaf7ff 0%, #d9edf9 46%, #f6fbfe 100%);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
}

button, input { font: inherit; }
a { color: #12649d; overflow-wrap: anywhere; }

.page-shell { min-height: 100vh; padding: 28px 18px; }

.campaign-card {
  width: min(100%, 760px);
  margin: 0 auto;
  overflow: hidden;
  background: #fff;
  border: 1px solid rgba(255,255,255,.9);
  border-radius: 22px;
  box-shadow: 0 24px 80px rgba(22, 79, 117, .18);
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  padding: 0 34px;
  background: rgba(255,255,255,.96);
}

.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--navy); text-decoration: none; }
.brand-mark {
  display: grid; place-items: center; width: 38px; height: 38px;
  color: #fff; background: linear-gradient(135deg, var(--sky), var(--blue));
  border-radius: 10px 3px 10px 3px; font-size: 13px; font-weight: 800; letter-spacing: .08em;
  box-shadow: 0 7px 18px rgba(22,104,169,.22);
}
.brand-name { font-size: 15px; font-weight: 700; letter-spacing: .04em; }
.header-label { color: #7190a6; font-size: 10px; font-weight: 700; letter-spacing: .2em; }

.hero { position: relative; min-height: 370px; overflow: hidden; background: #dceefa; }
.hero-image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 50% 56%; }
.hero-shade { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(245,251,255,.98) 0%, rgba(239,249,255,.93) 35%, rgba(239,249,255,.28) 63%, rgba(9,46,82,.08) 100%); }
.hero::after { content: ""; position: absolute; left: 0; bottom: 0; width: 50%; height: 5px; background: linear-gradient(90deg, var(--sky), var(--blue)); }

.hero-copy { position: relative; z-index: 1; width: 57%; padding: 61px 0 54px 52px; }
.hero-kicker, .section-eyebrow { display: block; color: var(--blue); font-size: 10px; font-weight: 800; letter-spacing: .22em; }
.hero-kicker { margin-bottom: 22px; }
.hero-lead { margin: 0 0 8px; color: var(--blue); font-size: 18px; font-weight: 700; }
.hero h1 { margin: 0 0 26px; color: var(--navy); font-size: clamp(28px, 4.5vw, 39px); line-height: 1.35; letter-spacing: -.04em; }
.hero-period { display: inline-block; padding: 9px 16px; color: #fff; background: var(--navy); border-radius: 3px; font-size: 12px; font-weight: 700; letter-spacing: .12em; }

.intro { position: relative; padding: 58px 70px 34px; text-align: center; background: linear-gradient(180deg, #fff 0%, var(--ice) 100%); }
.intro::before { content: ""; position: absolute; top: 28px; left: 50%; width: 1px; height: 16px; background: var(--sky); }
.intro h2 { margin: 8px 0 24px; color: var(--navy); font-size: 24px; letter-spacing: .05em; }
.intro p { margin: 0; color: #385269; font-size: 15px; line-height: 1.9; }

.info-panel { display: flex; gap: 14px; margin: 0 52px 44px; padding: 20px 22px; color: #4b667a; background: var(--pale); border: 1px solid #c8e8fa; border-radius: 12px; font-size: 12px; line-height: 1.7; }
.info-icon { display: grid; place-items: center; flex: none; width: 24px; height: 24px; color: #fff; background: var(--blue); border-radius: 50%; font-family: Georgia, serif; font-weight: 700; }
.privacy-note p { margin: 0 0 8px; }
.privacy-note p:last-child { margin-bottom: 0; }

.entry-form { margin: 0 38px 56px; padding: 38px 42px 42px; background: #fff; border: 1px solid #d9eaf4; border-radius: 18px; box-shadow: 0 16px 44px rgba(16,85,130,.10); }
.form-heading, .section-heading { display: flex; align-items: center; gap: 18px; margin-bottom: 34px; }
.section-number { display: grid; place-items: center; flex: none; width: 52px; height: 52px; color: #fff; background: linear-gradient(135deg, var(--sky), var(--blue)); border-radius: 50%; font: 700 16px Georgia, serif; box-shadow: 0 8px 20px rgba(22,104,169,.2); }
.form-title, .section-heading h2 { margin: 5px 0 0; color: var(--navy); font-size: 24px; letter-spacing: .04em; }

.field-label, fieldset legend { display: block; margin: 0 0 9px; padding: 0; color: #2b465d; font-size: 13px; font-weight: 700; line-height: 1.5; }
.field-label span, fieldset legend span { color: #e64a5d; }
.entry-form > input { display: block; width: 100%; height: 50px; margin: 0 0 22px; padding: 10px 15px; color: var(--ink); background: #f8fcff; border: 1px solid #c9deeb; border-radius: 8px; outline: none; }
.entry-form > input::placeholder { color: #9aafbd; }
.entry-form > input:focus { background: #fff; border-color: var(--sky); box-shadow: 0 0 0 4px rgba(88,183,232,.14); }

fieldset { min-width: 0; margin: 0 0 20px; padding: 0; border: 0; }
.choice-row { position: relative; display: flex; align-items: center; min-height: 46px; padding: 10px 14px; color: #405d72; background: #f8fcff; border: 1px solid #c9deeb; border-radius: 8px; cursor: pointer; user-select: none; }
.choice-row input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.fake-check { position: relative; width: 20px; height: 20px; margin-right: 10px; border: 1px solid #9cb9cc; border-radius: 5px; background: #fff; }
.choice-row input:checked + .fake-check { border-color: var(--blue); background: var(--blue); }
.choice-row input:checked + .fake-check::after { content: ""; position: absolute; left: 6px; top: 2px; width: 5px; height: 10px; border: solid #fff; border-width: 0 2px 2px 0; transform: rotate(45deg); }
.choice-row:focus-within { outline: 3px solid rgba(88,183,232,.2); }

.submit-button { display: flex; align-items: center; justify-content: center; width: 100%; height: 56px; margin-top: 28px; color: #fff; background: linear-gradient(100deg, #0b4d7f, #1679bc); border: 0; border-radius: 8px; box-shadow: 0 10px 24px rgba(16,105,165,.25); font-weight: 700; letter-spacing: .1em; cursor: pointer; transition: transform .2s ease, box-shadow .2s ease; }
.submit-button::after { content: "→"; margin-left: 18px; font-size: 18px; }
.submit-button:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(16,105,165,.3); }
.submit-button:focus-visible, .faq-item button:focus-visible { outline: 3px solid #83c9ef; outline-offset: 3px; }
.form-message { margin: 14px 0 0; padding: 12px 14px; color: #236048; background: #effaf4; border: 1px solid #b9dfcb; border-radius: 8px; font-size: 13px; text-align: center; }

.faq-section { padding: 54px 62px 64px; background: #eef8fe; border-top: 1px solid #dceef8; border-bottom: 1px solid #dceef8; }
.faq-section .section-heading { margin-bottom: 30px; }
.faq-list { display: grid; gap: 12px; }
.faq-item { overflow: hidden; background: rgba(255,255,255,.95); border: 1px solid #d5e8f3; border-radius: 10px; box-shadow: 0 5px 18px rgba(16,78,117,.06); }
.faq-item button { display: flex; align-items: center; justify-content: space-between; gap: 18px; width: 100%; min-height: 64px; padding: 16px 20px; color: #173b59; text-align: left; background: transparent; border: 0; font-size: 14px; font-weight: 700; cursor: pointer; }
.faq-icon { display: grid; place-items: center; flex: none; width: 28px; height: 28px; color: var(--blue); background: var(--pale); border-radius: 50%; font-size: 17px; font-weight: 400; }
.faq-answer { padding: 0 20px 20px; color: #536b7d; font-size: 13px; line-height: 1.8; }
.faq-item.is-open { border-color: #9dcfeb; }

.closing { padding: 58px 44px 40px; text-align: center; background: #fff; font-size: 14px; line-height: 1.8; }
.closing-mark { display: grid; place-items: center; width: 50px; height: 50px; margin: 0 auto 18px; color: #fff; background: var(--sky); border-radius: 50%; font-size: 24px; }
.closing p { margin: 0 0 20px; }
.closing-title { color: var(--navy); font-size: 21px; font-weight: 700; }

.company-info { padding: 42px 62px 32px; color: #4b6274; background: #f7fbfe; font-size: 13px; line-height: 1.75; }
.company-heading { margin-bottom: 38px; }
.company-heading h2 { margin: 5px 0 0; color: var(--navy); font-size: 23px; }
.company-info > h2 { margin: 0 0 12px; color: var(--navy); font-size: 14px; font-weight: 700; }
.company-info > p { margin: 0 0 34px; padding-bottom: 30px; border-bottom: 1px solid #dbeaf3; }
.company-info > p:last-child { margin-bottom: 0; border-bottom: 0; }

footer { padding: 24px 16px; color: #aac0d0; background: var(--navy); font-size: 11px; letter-spacing: .05em; text-align: center; }

@media (max-width: 640px) {
  .page-shell { padding: 0; }
  .campaign-card { border: 0; border-radius: 0; box-shadow: none; }
  .site-header { height: 62px; padding: 0 20px; }
  .brand-mark { width: 34px; height: 34px; }
  .brand-name { font-size: 13px; }
  .header-label { display: none; }
  .hero { min-height: 390px; }
  .hero-image { object-position: 61% 50%; }
  .hero-shade { background: linear-gradient(90deg, rgba(245,251,255,.98) 0%, rgba(242,250,255,.88) 42%, rgba(241,250,255,.18) 76%); }
  .hero-copy { width: 72%; padding: 55px 0 48px 24px; }
  .hero h1 { font-size: clamp(25px, 7.7vw, 34px); }
  .hero-period { font-size: 10px; }
  .intro { padding: 54px 24px 30px; }
  .intro h2 { font-size: 21px; }
  .intro p { font-size: 14px; }
  .desktop-break { display: none; }
  .info-panel { margin: 0 18px 34px; padding: 17px; }
  .entry-form { margin: 0 14px 42px; padding: 30px 20px 26px; }
  .form-heading, .section-heading { gap: 13px; }
  .section-number { width: 44px; height: 44px; font-size: 14px; }
  .form-title, .section-heading h2 { font-size: 21px; }
  .faq-section { padding: 44px 18px 48px; }
  .faq-item button { padding: 15px 16px; font-size: 13px; }
  .closing { padding: 48px 24px 30px; }
  .company-info { padding: 38px 24px 26px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .submit-button { transition: none; }
}