/* JuKuOKA — チラシの色と既存の静的構成を継承 */
:root {
  --navy: #1e3a5f;
  --navy-deep: #16304f;
  --orange: #f47b20;
  --green: #e8f3ec;
  --bg: #fafaf7;
  --white: #fff;
  --ink: #283847;
  --ink-soft: #586671;
  --border: #d6ddd9;
  --line: #06c755;
  --font-jp: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
  --font-en: "Poppins", sans-serif;
  --container: 1200px;
  --gutter: 24px;
  --header-h: 72px;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 20px); }
body { margin: 0; color: var(--ink); background: var(--bg); font: 400 16px/1.9 var(--font-jp); letter-spacing: .025em; -webkit-font-smoothing: antialiased; }
h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
img { height: auto; }
button { font: inherit; }
[hidden] { display: none !important; }
a, summary { -webkit-tap-highlight-color: transparent; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--orange); outline-offset: 5px; }
::selection { background: #ffd3ad; color: var(--navy); }
.container { width: min(100%, var(--container)); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: 72px; }
.section__title { margin-top: 14px; color: var(--navy); font-size: clamp(25px, 5.5vw, 34px); font-weight: 700; line-height: 1.65; letter-spacing: .035em; }
.section__lead { margin-top: 24px; color: var(--ink-soft); font-size: 15px; line-height: 2; }
.eyebrow { display: flex; align-items: center; gap: 12px; font-size: 12px; font-weight: 700; color: var(--navy); letter-spacing: .08em; }
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--orange); flex: none; }
.pc-only { display: none; }
.skip-link { position: fixed; top: 8px; left: 16px; z-index: 100; padding: 10px 16px; background: var(--white); transform: translateY(-150%); }
.skip-link:focus { transform: none; }

/* 少ない種類のボタンで、導線に強弱をつける */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 18px; min-height: 52px; padding: 13px 22px; border: 1px solid transparent; border-radius: 5px; font-size: 14px; line-height: 1.5; font-weight: 700; transition: background-color .18s, border-color .18s; }
.btn--primary { color: var(--navy-deep); background: var(--orange); }
.btn--primary:hover { background: #ff9646; }
.btn--line { background: var(--line); color: #102c23; }
.btn--line:hover { background: #29d876; }
.btn--lg { min-height: 58px; padding: 15px 24px; font-size: 15px; }
.btn--sm { min-height: 44px; padding: 10px 14px; font-size: 12px; gap: 12px; }
.arrow { font-family: Arial, sans-serif; font-size: 21px; font-weight: 400; line-height: 1; }
.text-link { display: inline-flex; align-items: center; gap: 22px; min-height: 44px; padding-block: 9px; color: var(--navy); font-size: 14px; font-weight: 700; border-bottom: 1px solid var(--navy); }
.text-link:hover { color: #a04b0a; border-color: #a04b0a; }

/* Header */
.site-header { height: var(--header-h); position: sticky; top: 0; z-index: 30; background: var(--bg); border-bottom: 1px solid transparent; }
.site-header.is-scrolled { border-bottom-color: var(--border); }
.site-header__inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.logo { display: inline-flex; flex-direction: column; flex-shrink: 0; gap: 0; color: var(--navy); }
.logo__text { font: 800 27px/1.15 var(--font-en); letter-spacing: -.06em; }
.logo__o { color: var(--orange); }
.logo__tag { font-size: 8px; letter-spacing: .03em; line-height: 1.7; margin-top: 3px; }
.site-nav { display: none; }
.site-header__cta { flex-shrink: 0; }

/* Hero：文章が先に読めるスマートフォン専用の順序 */
.hero { padding-top: 27px; }
.hero__inner { display: grid; gap: 26px; }
.hero__audience { font-size: 10px; color: var(--ink-soft); letter-spacing: .035em; margin-bottom: 18px; }
.hero__eyebrow { color: var(--navy); font-size: 16px; font-weight: 500; line-height: 1.8; }
.hero__eyebrow strong { font-weight: 700; }
.hero__title { color: var(--navy); margin: 22px 0 17px; font-size: clamp(25px, 7.3vw, 34px); font-weight: 700; line-height: 1.65; letter-spacing: 0; }
.hero__title > span { display: block; }
.hero__closing { white-space: nowrap; }
.hero__title em { font-style: normal; color: var(--navy); text-decoration: underline; text-decoration-color: var(--orange); text-decoration-thickness: 3px; text-underline-offset: 7px; }
.hero__lead { font-size: 14px; line-height: 1.95; color: var(--ink-soft); }
.hero__actions { margin-top: 24px; }
.hero__actions .btn { width: 100%; justify-content: space-between; }
.hero__note { font-size: 11px; color: var(--ink-soft); margin-top: 10px; }
.hero__visual { margin: 0; }
.hero__visual img { width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; object-position: center 28%; border-radius: 14px; display: block; }
.insta__head { display: grid; gap: 6px; }
.insta__head .text-link { justify-self: start; margin-top: 8px; }
.insta__grid { margin-top: 24px; display: flex; gap: 12px; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 6px; margin-inline: calc(-1 * var(--gutter)); padding-inline: var(--gutter); -webkit-overflow-scrolling: touch; }
.insta__grid li { flex: 0 0 68%; scroll-snap-align: start; }
.insta__grid a { display: block; border-radius: 12px; overflow: hidden; border: 1px solid var(--border); background: var(--white); }
.insta__grid img { width: 100%; height: auto; display: block; }
.hero__foot { margin-top: 24px; padding-block: 22px 28px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; }
.hero__foot p { font-size: 11px; color: var(--navy); font-weight: 500; }
.hero__foot p span { color: #a34f10; }
.hero__foot .text-link { font-size: 11px; border-bottom: none; min-height: 32px; }

/* 共感は囲わず、短い言葉のリズムで */
.worries { background: var(--green); padding-block: 54px; }
.worries__inner { display: grid; gap: 29px; }
.worries .section__title { font-size: 25px; }
.worries__list { font-size: 14px; }
.worries__list li { padding-block: 13px; border-bottom: 1px solid #cbd9ce; }
.worries__list li:first-child { padding-top: 0; }
.worries__body > p { margin-top: 22px; font-size: 14px; }

/* サービス概要 */
.about__content { margin-top: 27px; display: grid; gap: 35px; }
.about__intro { font-size: 15px; line-height: 2.05; max-width: 430px; }
.feature { display: grid; grid-template-columns: 38px 1fr; gap: 16px; padding-block: 25px; border-top: 1px solid var(--border); }
.feature:last-child { border-bottom: 1px solid var(--border); }
.feature__label { font-size: 11px; color: #687465; padding-top: 5px; }
.feature h3, .need h3, .step h3 { font-size: 17px; color: var(--navy); font-weight: 700; line-height: 1.65; }
.feature p:not(.feature__label) { color: var(--ink-soft); font-size: 14px; line-height: 1.95; margin-top: 9px; }

/* 学習内容は番号と罫線で整理 */
.needs-section { background: var(--white); padding-top: 58px; }
.needs__layout { display: grid; gap: 32px; }
.need { display: grid; grid-template-columns: 32px 1fr; gap: 13px; padding-block: 26px; border-top: 1px solid var(--border); }
.need__num { font: 500 14px/1.8 var(--font-en); color: #9a4a0d; padding-top: 3px; }
.need p { margin-top: 9px; color: var(--ink-soft); font-size: 14px; }
.needs__note { font-size: 12px; color: var(--ink-soft); padding-top: 15px; border-top: 1px solid var(--border); }

/* 無料体験は「合うかどうかを確かめる」ための案内 */
.tutors { padding-block: 68px; }
.tutors__layout { display: grid; gap: 30px; }
.trial { background: var(--green); padding: 27px 23px; border-top: 3px solid #94ac96; }
.trial__label { color: var(--navy); font-size: 13px; font-weight: 700; }
.trial__checks { margin-top: 15px; }
.trial__checks li { font-size: 14px; padding-block: 9px; display: flex; gap: 11px; }
.trial__checks li span { color: #6a826c; font-family: Arial, sans-serif; }
.trial .text-link { margin-top: 19px; font-size: 13px; }
.trial__note { color: var(--ink-soft); font-size: 11px; margin-top: 17px; line-height: 1.9; }

/* 金額の確認ができるまでは、架空の価格表を作らない */
.plan-section { padding-block: 48px; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.plan { display: grid; gap: 25px; }
.plan .section__title { font-size: 25px; }
.plan__body { font-size: 14px; }
.plan__detail { margin-top: 14px; color: var(--ink-soft); }
.plan .text-link { margin-top: 16px; }

/* 流れ */
.flow { display: grid; gap: 32px; }
.step { display: grid; grid-template-columns: 38px 1fr; gap: 15px; position: relative; padding-bottom: 28px; }
.step:last-child { padding-bottom: 0; }
.step:not(:last-child)::after { content: ""; position: absolute; top: 38px; left: 16px; bottom: 4px; width: 1px; background: var(--border); }
.step__num { width: 34px; height: 34px; display: grid; place-items: center; background: var(--green); font: 500 12px/1 var(--font-en); color: var(--navy); }
.step p { margin-top: 8px; color: var(--ink-soft); font-size: 14px; }

/* FAQ：大きなタップ領域とネイティブの開閉 */
.faq-section { background: #f0f3ee; padding-block: 58px 66px; }
.faq__layout { display: grid; gap: 30px; }
.faq__item { border-top: 1px solid #ccd6cc; }
.faq__item:last-child { border-bottom: 1px solid #ccd6cc; }
.faq summary { cursor: pointer; list-style: none; position: relative; padding: 22px 29px 22px 28px; font-size: 14px; font-weight: 500; color: var(--navy); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "Q"; position: absolute; left: 0; top: 23px; color: #6a7e6b; font: 500 14px/1.8 var(--font-en); }
.faq summary::after { content: "+"; position: absolute; right: 0; top: 19px; font: 400 22px/1.6 Arial, sans-serif; }
.faq details[open] summary::after { content: "−"; }
.faq summary:hover { color: #95501d; }
.faq__a { padding: 0 22px 23px 28px; font-size: 14px; color: var(--ink-soft); }

/* 最終CTA */
.contact { background: var(--navy); color: var(--white); padding-block: 57px 55px; }
.contact__inner { display: grid; gap: 30px; }
.contact .eyebrow { color: #ffb67f; }
.contact__title { font-size: clamp(25px, 6.3vw, 36px); line-height: 1.65; letter-spacing: .03em; font-weight: 700; margin-top: 18px; }
.contact__text { font-size: 14px; color: #d4dfe9; margin-top: 21px; line-height: 2; }
.contact__actions .btn { width: 100%; gap: 13px; }
.line-label { border-right: 1px solid #285c3d; padding-right: 13px; font: 700 14px/1.5 var(--font-en); }
.contact__note { font-size: 11px; color: #d4dfe9; margin-top: 13px; text-align: center; }
.contact__unavailable { border-left: 2px solid #ffb67f; padding: 1px 0 1px 17px; font-size: 13px; line-height: 2; color: #e4eaf0; }
.contact__instagram { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; width: fit-content; padding-block: 15px 7px; margin-top: 17px; border-bottom: 1px solid #7a91ad; font-size: 13px; }
.contact__instagram span { font-size: 11px; color: #d4dfe9; }
.contact__instagram:hover { border-color: var(--orange); }
.site-footer { background: var(--bg); padding-block: 31px; }
.site-footer__inner { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; justify-content: space-between; }
.site-footer .logo__text { font-size: 25px; }
.site-footer__tagline { display: none; font-size: 11px; color: var(--ink-soft); }
.site-footer__copy { font: 400 10px/1.8 var(--font-en); color: var(--ink-soft); }

/* CTAは必要な区間だけ固定。非表示時はフォーカスも無効にする */
.sticky-cta { position: fixed; bottom: 0; left: 0; width: 100%; z-index: 40; background: var(--bg); border-top: 1px solid var(--border); padding: 10px var(--gutter) calc(10px + env(safe-area-inset-bottom, 0px)); visibility: hidden; transform: translateY(105%); transition: transform .18s, visibility .18s; }
.sticky-cta.is-visible { visibility: visible; transform: translateY(0); }
.sticky-cta__inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.sticky-cta__label { flex-shrink: 0; font-size: 10px; line-height: 1.65; color: var(--navy); }
.sticky-cta__label strong { font-size: 12px; font-weight: 700; }
.sticky-cta .btn { min-height: 46px; padding: 11px 17px; font-size: 12px; flex: 1; justify-content: space-between; gap: 7px; }

/* Tablet */
@media (min-width: 600px) {
  .insta__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; overflow: visible; margin-inline: 0; padding-inline: 0; }
  .insta__grid li { flex: none; }
  :root { --gutter: 40px; }
  .hero__inner { max-width: 800px; }
  .hero__copy { padding-top: 12px; }
  .hero__title { font-size: 40px; }
  .hero__actions .btn { width: auto; gap: 42px; }
  .hero__foot p { font-size: 13px; }
  .hero__foot .text-link { font-size: 12px; }
  .logo__text { font-size: 31px; }
  .logo__tag { font-size: 9px; }
  .site-header__cta { font-size: 13px; padding-inline: 19px; }
  .worries__list, .worries__body > p { font-size: 15px; }
  .trial { padding: 35px; }
  .sticky-cta { padding-inline: 40px; }
  .sticky-cta__inner { max-width: 540px; margin-inline: auto; }
}

/* Desktop：左右の比率と余白をセクションの役割ごとに変える */
@media (min-width: 960px) {
  :root { --header-h: 86px; --gutter: 32px; }
  .section { padding-block: 100px; }
  .pc-only { display: inline; }
  .site-nav { display: flex; gap: 25px; margin-left: auto; margin-right: 27px; }
  .site-nav a { font-size: 12px; padding-block: 15px; }
  .site-nav a:hover { color: #a04b0a; }
  .site-header .logo { flex-direction: row; align-items: center; gap: 16px; }
  .site-header .logo__tag { font-size: 10px; margin: 0; }
  .hero { padding-top: 46px; }
  .hero__inner { max-width: var(--container); grid-template-columns: minmax(0, 1fr) 340px; align-items: center; gap: 56px; }
  .hero__visual { justify-self: end; width: 340px; }
  .hero__visual img { aspect-ratio: 359 / 490; object-position: center; border-radius: 18px; }
  .insta__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; overflow: visible; margin-inline: 0; padding-inline: 0; }
  .insta__grid li { flex: none; }
  .insta { display: grid; grid-template-columns: 1fr 2fr; gap: 48px; align-items: start; }
  .insta__grid { margin-top: 0; }
  .hero__copy { padding-block: 0 22px; }
  .hero__audience { font-size: 11px; margin-bottom: 23px; }
  .hero__eyebrow { font-size: 17px; }
  .hero__eyebrow br { display: none; }
  .hero__title { font-size: clamp(30px, 2.65vw, 38px); margin-top: 30px; line-height: 1.75; letter-spacing: -.025em; }
  .hero__lead { font-size: 14px; }
  .hero__actions { margin-top: 27px; }
  .hero__actions .btn { font-size: 14px; gap: 36px; }
  .hero__foot { margin-top: 34px; padding-block: 25px 27px; border-top: 1px solid var(--border); }
  .worries { padding-block: 60px; }
  .worries__inner { grid-template-columns: 1fr 1.15fr; gap: 90px; align-items: center; }
  .worries .section__title { font-size: 28px; }
  .worries__body > p br { display: none; }
  .about .section-heading { max-width: 700px; }
  .about__content { grid-template-columns: .8fr 1.2fr; gap: 110px; margin-top: 38px; }
  .about__intro { font-size: 15px; padding-top: 15px; line-height: 2.15; }
  .feature { grid-template-columns: 40px 1fr; gap: 28px; padding-block: 26px; }
  .feature h3, .need h3 { font-size: 18px; }
  .feature p:not(.feature__label) { font-size: 14px; }
  .needs__layout { display: block; }
  .needs__heading { display: flex; align-items: flex-end; justify-content: space-between; flex-wrap: wrap; margin-bottom: 42px; }
  .needs__heading > .eyebrow { width: 100%; }
  .needs__heading > .section__lead { margin-bottom: 6px; margin-right: 30px; }
  .need { padding-block: 29px; grid-template-columns: 52px 1fr; gap: 25px; }
  .need > div { display: grid; grid-template-columns: 255px 1fr; gap: 38px; align-items: baseline; }
  .need > div p { margin-top: 0; max-width: 600px; }
  .need__num { font-size: 16px; }
  .need p { font-size: 15px; }
  .tutors { padding-block: 90px; }
  .tutors__layout { grid-template-columns: 1fr 1fr; gap: 85px; align-items: center; }
  .trial { padding: 37px; }
  .trial__checks li { font-size: 15px; }
  .plan-section { padding-block: 54px; }
  .plan { grid-template-columns: 1fr 1fr; gap: 85px; align-items: start; }
  .plan .section__title { font-size: 28px; }
  .plan__body { font-size: 15px; }
  .flow { grid-template-columns: 1fr 1fr; gap: 85px; }
  .step { grid-template-columns: 42px 1fr; gap: 23px; padding-bottom: 33px; }
  .step h3 { font-size: 18px; }
  .faq-section { padding-block: 75px 88px; }
  .faq__layout { grid-template-columns: .68fr 1.32fr; gap: 95px; }
  .faq summary { font-size: 15px; padding-block: 24px; }
  .faq summary::before { top: 25px; }
  .faq summary::after { top: 21px; }
  .contact { padding-block: 80px; }
  .contact__inner { grid-template-columns: 1.1fr .9fr; gap: 100px; align-items: center; }
  .contact__actions { max-width: 405px; }
  .contact__text { font-size: 15px; }
  .site-footer { padding-block: 36px; }
  .site-footer__tagline { display: block; margin-left: auto; margin-right: 28px; }
  .sticky-cta { display: none; }
}
@media (min-width: 1240px) {
}
@media (max-width: 359px) {
  :root { --gutter: 18px; }
  .site-header__inner { gap: 8px; }
  .logo__text { font-size: 24px; }
  .site-header__cta { font-size: 11px; padding-inline: 10px; gap: 7px; }
  .hero__audience { font-size: 9px; }
  .hero__title { font-size: 25px; }
  .hero__lead { font-size: 13px; }
  .section__title { font-size: 23px; }
  .trial { padding-inline: 17px; }
  .trial__checks li { font-size: 13px; }
  .sticky-cta { padding-inline: 15px; }
  .sticky-cta__inner { gap: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}

/* 料金表(Instagram 投稿の料金を転記) */
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.price { width: 100%; border-collapse: collapse; margin-top: 18px; font-size: 15px; font-variant-numeric: tabular-nums; }
.price th, .price td { padding: 12px 10px; border-bottom: 1px solid var(--border); text-align: center; }
.price thead th { font-size: 12px; font-weight: 600; color: var(--ink-soft); letter-spacing: .04em; border-bottom: 2px solid var(--navy); }
.price tbody th { font-weight: 700; color: var(--navy); text-align: left; white-space: nowrap; }
.price tbody td { font-weight: 700; color: var(--navy); }
.price__notes { margin-top: 14px; font-size: 12px; color: var(--ink-soft); line-height: 1.8; display: grid; gap: 4px; }
.price__notes li { padding-left: 1em; text-indent: -1em; }
.price__notes li::before { content: "・"; }
.plan__body .text-link { margin-top: 18px; }
.faq__a a { color: var(--navy); text-decoration: underline; text-decoration-color: var(--orange); text-underline-offset: 3px; }