:root {
  font-family: 'Yu Gothic', 'Hiragino Kaku Gothic ProN', Meiryo, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: #193b3b;
  background: #eeeae1;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; }
button, input { font: inherit; }
button { cursor: pointer; }
a { color: #166b6b; text-underline-offset: .2em; }

.site-shell {
  min-height: 100vh;
  background: #f7f4ed;
  max-width: 560px;
  margin: 0 auto;
  box-shadow: 0 18px 70px #23403e1b;
}
.site-header {
  min-height: 64px;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid #e6e2d8;
  background: #f7f4ed;
}
.site-mark { display: flex; align-items: center; }
.site-mark__logo { display: block; width: 92px; height: 43px; object-fit: contain; mix-blend-mode: multiply; }
.prototype-tag { font-size: 10px; color: #4d6460; border: 1px solid #adc5bd; background: #e8f1ed; border-radius: 99px; padding: 5px 8px; white-space: nowrap; }
.app { min-height: calc(100vh - 118px); }
.site-footer { display: grid; gap: 3px; padding: 18px 24px 26px; color: #75817a; background: #f7f4ed; font-size: 10px; line-height: 1.6; border-top: 1px solid #e6e2d8; }

.screen { padding: 22px 24px 36px; animation: rise .28s ease both; }
.screen--ad { padding-top: 18px; }
.topline { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 28px; margin-bottom: 22px; }
.back { border: 0; background: transparent; color: #305a56; font-size: 13px; font-weight: 700; padding: 7px 4px 7px 0; }
.back::before { content: '←'; margin-right: 8px; font-size: 18px; vertical-align: -1px; }
.step { color: #637971; font-size: 11px; font-weight: 700; letter-spacing: .04em; }
.progress { height: 4px; background: #e2e4d9; border-radius: 10px; overflow: hidden; margin: -8px 0 28px; }
.progress > span { display: block; height: 100%; background: #d8795a; border-radius: inherit; transition: width .25s ease; }
.eyebrow { margin: 0 0 11px; color: #bc654b; font-size: 11px; font-weight: 800; letter-spacing: .17em; }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(29px, 7.7vw, 39px); line-height: 1.38; letter-spacing: -.05em; margin-bottom: 15px; }
h2 { font-size: clamp(25px, 6.8vw, 32px); line-height: 1.42; letter-spacing: -.05em; margin-bottom: 12px; }
h3 { font-size: 19px; line-height: 1.4; letter-spacing: -.035em; }
.lead { color: #5e6e66; font-size: 14px; line-height: 1.85; margin-bottom: 23px; }
.lead strong { color: #244f4a; }
.small-note { font-size: 11px; line-height: 1.7; color: #6a776e; }
.center { text-align: center; }

.ad-visual { background: #e5efea; border: 1px solid #d1e1d7; border-radius: 28px; padding: 26px 18px 22px; overflow: hidden; position: relative; text-align: center; }
.ad-visual::before, .ad-visual::after { content: ''; position: absolute; width: 180px; height: 180px; border-radius: 50%; pointer-events: none; }
.ad-visual::before { background: #f4d3bd93; top: -98px; right: -70px; }
.ad-visual::after { border: 1px solid #82aa9e73; left: -90px; bottom: -105px; }
.ad-visual > * { position: relative; z-index: 1; }
.ad-kicker { color: #356d66; font-size: 12px; font-weight: 800; letter-spacing: .09em; margin-bottom: 12px; }
.ad-visual h1 { margin-bottom: 12px; }
.ad-sub { color: #4a6962; font-weight: 600; font-size: 13px; line-height: 1.7; margin-bottom: 20px; }
.ad-bottom { margin: 18px 0 0; color: #486962; font-size: 11px; font-weight: 700; line-height: 1.7; }
.campaign-strip { display: flex; align-items: center; gap: 9px; background: #fff; color: #26554d; border: 1px solid #d7e1d8; border-radius: 14px; padding: 11px 13px; margin: 16px 0 20px; font-size: 12px; font-weight: 700; line-height: 1.5; }
.campaign-strip__icon { font-size: 19px; }

.packs { display: flex; align-items: end; justify-content: center; gap: 10px; margin: 10px 0 0; }
.pack-image { display: block; width: 83px; height: 146px; object-fit: contain; filter: drop-shadow(5px 9px 7px #21443b2e); position: relative; }
.packs .pack-image:nth-child(2) { width: 91px; height: 160px; z-index: 2; transform: translateY(-4px); }
.pack-image--single { width: 128px; height: 224px; filter: drop-shadow(8px 12px 10px #21443b30); }

.button { width: 100%; display: flex; align-items: center; justify-content: center; gap: 8px; min-height: 54px; border: 0; border-radius: 15px; background: #174e49; color: #fff; font-size: 15px; font-weight: 800; line-height: 1.4; padding: 13px 16px; box-shadow: 0 6px 13px #123e3429; transition: transform .16s ease, background .16s ease; }
.button:hover { background: #236a62; transform: translateY(-1px); }
.button:active { transform: translateY(1px); }
.button--secondary { color: #20554e; background: transparent; border: 1px solid #9abbb0; box-shadow: none; }
.button--secondary:hover { background: #e8f1eb; }
.button--plain { color: #28645b; background: transparent; box-shadow: none; min-height: 46px; }
.button--plain:hover { background: #e8f1eb; }
.button[disabled] { opacity: .46; cursor: not-allowed; transform: none; }
.button-group { display: grid; gap: 9px; margin-top: 22px; }

.choices { display: grid; gap: 12px; }
.choice { display: grid; grid-template-columns: 45px 1fr 34px; align-items: center; text-align: left; gap: 13px; width: 100%; border: 1px solid #dce3d7; background: #fff; border-radius: 17px; padding: 12px 15px; box-shadow: 0 5px 18px #24543e0a; color: #214641; }
.choice:hover, .choice:focus-visible { border-color: #7aab9d; background: #f7fbf7; }
.choice__number { width: 43px; height: 43px; display: grid; place-items: center; border-radius: 13px; background: #e5eee6; color: #356d59; font-size: 13px; font-weight: 800; }
.choice:nth-child(2) .choice__number { background: #f6e6df; color: #b35d45; }
.choice:nth-child(3) .choice__number { background: #eee8f4; color: #806899; }
.choice__label { font-size: 15px; font-weight: 800; line-height: 1.45; }
.choice__hint { display: block; color: #76837b; font-size: 10px; font-weight: 500; margin-top: 4px; }
.choice__thumb { display: block; width: 34px; height: 57px; object-fit: contain; }

.product-hero { border: 1px solid #d7e2d6; background: #fff; border-radius: 23px; overflow: hidden; box-shadow: 0 10px 25px #1d4b3c12; }
.product-hero__top { background: #fff0e7; min-height: 258px; padding: 18px; display: grid; place-items: center; }
.product-hero--max .product-hero__top { background: #fcebea; }
.product-hero--sugar .product-hero__top { background: #f4e8f0; }
.product-hero__body { padding: 22px; }
.product-hero__tag { display: inline-block; background: #fff0e7; color: #d75b26; padding: 5px 9px; border-radius: 99px; font-size: 10px; font-weight: 800; margin-bottom: 11px; }
.product-hero--max .product-hero__tag { color: #c02c3d; background: #fcebea; }
.product-hero--sugar .product-hero__tag { color: #9a2a87; background: #f4e8f0; }
.product-hero__body h3 { margin-bottom: 8px; }
.product-hero__body p { color: #556a60; font-size: 13px; line-height: 1.8; margin-bottom: 13px; }
.product-meta { display: flex; flex-wrap: wrap; gap: 5px 9px; color: #6a776e; font-size: 10px; line-height: 1.55; }
.product-meta span + span::before { content: '・'; margin-right: 9px; }
.section-label { margin: 27px 0 12px; font-size: 13px; font-weight: 800; color: #336159; }
.compact-list { display: grid; gap: 9px; }
.compact-card { width: 100%; border: 1px solid #dce3d9; border-radius: 15px; background: #fff; text-align: left; padding: 14px 15px; color: #234e47; display: flex; align-items: center; gap: 12px; }
.compact-card:hover, .compact-card:focus-visible { border-color: #85aca0; background: #fbfdfa; }
.compact-card__thumb { width: 34px; height: 59px; object-fit: contain; flex: none; }
.compact-card__text { flex: 1; }
.compact-card strong { display: block; font-size: 13px; line-height: 1.45; }
.compact-card small { color: #6c7b72; display: block; font-size: 10px; line-height: 1.5; margin-top: 3px; }
.compact-card__arrow { font-size: 20px; color: #8da79a; }
.overview { display: grid; gap: 10px; }
.overview .compact-card { padding: 18px 15px; }
.overview .compact-card__thumb { width: 38px; height: 66px; }
.overview .compact-card strong { font-size: 15px; }
.info-box { background: #e8efe9; border-radius: 15px; padding: 13px 15px; color: #42645a; font-size: 11px; line-height: 1.75; margin-top: 20px; }
.product-note { margin: 11px 0 0; }

.quiz-options { display: grid; gap: 10px; margin: 24px 0; }
.quiz-option { width: 100%; padding: 11px 16px; background: #fff; border: 1px solid #dce3d7; border-radius: 14px; text-align: left; color: #244b44; font-size: 14px; font-weight: 700; display: flex; align-items: center; gap: 12px; }
.quiz-option__thumb { width: 30px; height: 52px; object-fit: contain; flex: none; }
.quiz-option:hover, .quiz-option:focus-visible { border-color: #76a898; background: #f8fbf7; }
.quiz-option[disabled] { cursor: default; }
.quiz-option--correct { border: 2px solid #4a8b75; background: #e8f3eb; }
.quiz-option--wrong { border: 2px solid #c6866d; background: #f9ece5; }
.answer { border-radius: 17px; padding: 19px; background: #e9f1e8; margin-top: 16px; }
.answer--wrong { background: #f9eee7; }
.answer__status { color: #276856; font-size: 16px; font-weight: 800; margin-bottom: 6px; }
.answer--wrong .answer__status { color: #aa5b45; }
.answer p { color: #48645a; font-size: 12px; line-height: 1.8; margin-bottom: 0; }
.mini-recap { border-top: 1px solid #dce3d8; margin-top: 22px; padding-top: 10px; }
.mini-recap p { font-size: 11px; color: #597168; line-height: 1.7; margin: 8px 0; }
.mini-recap b { color: #28594f; }

.entry-note { display: flex; gap: 9px; padding: 13px; border-radius: 13px; background: #fff4df; color: #6e5834; font-size: 11px; line-height: 1.65; margin-bottom: 22px; }
.form-section { border: 0; padding: 0; margin: 0 0 22px; min-width: 0; }
.form-section legend, .field-label { display: block; font-size: 13px; font-weight: 800; color: #2f5a50; margin-bottom: 10px; }
.radio-list { display: grid; gap: 9px; }
.radio-card { display: flex; align-items: center; gap: 11px; background: #fff; border: 1px solid #dce3d9; border-radius: 13px; padding: 14px; cursor: pointer; font-size: 13px; font-weight: 700; }
.radio-card:has(input:checked) { border: 2px solid #387d6b; background: #f1f8f2; padding: 13px; }
.radio-card input { accent-color: #24715f; width: 18px; height: 18px; margin: 0; flex: none; }
.radio-card__thumb { width: 29px; height: 50px; object-fit: contain; flex: none; }
.field { width: 100%; min-height: 52px; padding: 13px 15px; border: 1px solid #aebfb1; background: #fff; color: #25463e; border-radius: 12px; font-size: 14px; }
.field:focus { outline: 2px solid #4f9e88; outline-offset: 2px; }
.consent { display: flex; align-items: flex-start; gap: 10px; font-size: 12px; line-height: 1.65; color: #4d6259; margin: 17px 0 6px; }
.consent input { accent-color: #24715f; width: 18px; height: 18px; margin: 2px 0 0; flex: none; }
.consent small { display: block; color: #7a857b; font-size: 10px; margin-top: 3px; }
.form-error { color: #b03f35; font-size: 11px; font-weight: 700; margin: 7px 0 0; min-height: 19px; }
.legal-note { margin-top: 18px; font-size: 10px; color: #78837a; line-height: 1.7; }

.done-icon { width: 73px; height: 73px; border-radius: 50%; display: grid; place-items: center; background: #dceee1; color: #2f7760; font-size: 38px; margin: 28px auto 19px; }
.done-pack { display: grid; place-items: center; background: #e9f0e9; border-radius: 22px; min-height: 260px; margin: 23px 0; }
.done-product { color: #2d6155; font-weight: 800; margin: 4px 0 0; }

@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@media (min-width: 720px) {
  body { padding: 28px 0; }
  .site-shell { min-height: calc(100vh - 56px); border-radius: 25px; overflow: hidden; }
  .app { min-height: 760px; }
  .screen { padding-left: 38px; padding-right: 38px; }
}
@media (max-width: 370px) {
  .site-header { padding-left: 16px; padding-right: 16px; }
  .screen { padding-left: 17px; padding-right: 17px; }
  .packs .pack-image { width: 68px; height: 119px; }
  .packs .pack-image:nth-child(2) { width: 76px; height: 133px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}