/* ビルメンアカデミー スタイル（信頼・プロ｜スマホ・PC両対応） */
@import url('https://fonts.googleapis.com/css2?family=Zen+Kaku+Gothic+New:wght@400;500;700&display=swap');

* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --navy: #13315a;        /* 濃紺：ヘッダー・見出し・信頼の軸 */
    --navy-deep: #0d2444;   /* さらに濃い紺：グラデ用 */
    --primary: #1e5ba8;     /* メイン青：ボタン・リンク */
    --primary-dark: #16467f;
    --accent: #c9a23f;      /* アクセント金：合格・格を出す一点 */
    --accent-bright: #e0bb52; /* 明るい金：見出しの差し色（lp.cssと共通） */
    --accent-soft: #f5edd6;
    --bg: #f7f9fc;
    --card: #ffffff;
    --text: #1a2533;
    --text-soft: #5a6b7d;
    --correct: #2e7d32;
    --wrong: #c62828;
    --border: #e2e8f0;
}

body {
    font-family: "Zen Kaku Gothic New", -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
}

/* トップページ：全幅セクションをヘッダー直下から流す */
.container:has(.hero.sec--navy) {
    max-width: none;
    padding: 0 0 0 0;
}

/* ヘッダー */
.site-header {
    background: var(--navy);
    border-bottom: 3px solid var(--accent);
    padding: 13px 18px;
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}
.site-nav {
    display: flex;
    gap: 6px;
}
.site-nav a {
    color: rgba(255,255,255,0.86);
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 700;
    padding: 7px 13px;
    border-radius: 999px;
    transition: background 0.15s, color 0.15s;
}
.site-nav a:hover {
    background: rgba(255,255,255,0.12);
    color: #fff;
}
.site-nav a.is-here {
    background: rgba(224,187,82,0.20);
    color: #ffe7a8;
}
/* スマホ：ロゴの下にナビを横並びで表示（折り返し可・コンパクト） */
@media (max-width: 720px) {
    .site-header {
        flex-direction: column;
        align-items: stretch;
        padding: 10px 14px;
        gap: 8px;
    }
    .logo { font-size: 1.05rem; }
    .site-nav {
        width: 100%;
        flex-wrap: nowrap;
        justify-content: center;
        gap: 2px;
    }
    .site-nav a {
        font-size: 0.78rem;
        padding: 5px 7px;
        white-space: nowrap;
    }
}
.logo {
    font-size: 1.05rem;
    font-weight: 800;
    color: #ffffff;
    text-decoration: none;
    letter-spacing: 0.02em;
    display: inline-flex;
    align-items: center;
    gap: 9px;
}
.logo-mark {
    width: 32px;
    height: 32px;
    object-fit: contain;
    display: inline-block;
    vertical-align: middle;
}
.logo-text {
    font-weight: 800;
}
.logo-qual {
    font-weight: 700;
    font-size: .78em;
    color: var(--accent);
    letter-spacing: .02em;
    margin-left: -2px;
}
@media (max-width: 720px) {
    .logo { flex-wrap: wrap; row-gap: 0; column-gap: 9px; }
    .logo-qual {
        display: block;
        width: 100%;
        margin: -2px 0 0 41px;
        font-size: .70em;
    }
}

.container {
    max-width: 760px;
    margin: 0 auto;
    padding: 24px 18px 60px;
}
.container.container--wide {
    max-width: 960px;
}

/* ページ上部の濃紺バンド（/app・/learn と統一） */
.page-hero {
    background:
        radial-gradient(60% 50% at 88% 12%, rgba(201,162,63,0.16), transparent 60%),
        linear-gradient(165deg, var(--navy) 0%, var(--navy-deep) 100%);
    color: #fff;
    padding: 40px 0 44px;
}
.page-hero-inner {
    max-width: 760px;
    margin: 0 auto;
    padding: 0 18px;
    text-align: center;
}
.page-hero-eyebrow {
    display: inline-block;
    font-family: "Zen Kaku Gothic New", sans-serif;
    color: #ffe7a8;
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    margin-bottom: 12px;
}
.page-hero h1 {
    font-family: "Zen Maru Gothic", "Zen Kaku Gothic New", sans-serif;
    color: #fff;
    font-size: clamp(1.7rem, 6.2vw, 2.4rem);
    font-weight: 700;
    line-height: 1.35;
    margin: 0;
}
.page-hero h1 em {
    font-style: normal;
    color: var(--accent-bright);
}
.page-hero-sub {
    font-family: "Zen Kaku Gothic New", sans-serif;
    margin: 12px 0 0;
    color: #d8e2f1;
    font-size: 1rem;
    line-height: 1.85;
    font-weight: 500;
}

/* ヒーロー */
.hero {
    text-align: center;
    padding: 60px 24px 56px;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.hero::after {
    content: "";
    position: absolute;
    right: -40px;
    top: -40px;
    width: 160px;
    height: 160px;
    background: radial-gradient(circle, rgba(201,162,63,0.18), transparent 70%);
}
.hero-eyebrow {
    display: inline-block;
    background: rgba(201,162,63,0.18);
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    padding: 5px 14px;
    border-radius: 999px;
    margin-bottom: 16px;
}
.hero-title {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.4;
    margin-bottom: 14px;
    color: #fff;
}
.hero-sub {
    color: #d8e2f1;
    font-size: 1.12rem;
    font-weight: 600;
    line-height: 1.85;
    margin: 0 0 4px;
}
.hero-img {
    margin: 22px auto 6px;
    max-width: 680px;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 12px 30px rgba(0,0,0,0.35);
    border: 3px solid rgba(255,255,255,0.15);
}
.hero-img img { display: block; width: 100%; height: auto; }

/* セクション内の写真イラスト */
.sec-img {
    text-align: center;
    margin: 0 auto 28px;
    max-width: 560px;
}
.sec-img img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 14px;
    box-shadow: 0 8px 24px rgba(19,49,90,0.16);
    border: 1px solid var(--border);
}
.sec-img-cap {
    display: block;
    margin-top: 12px;
    font-size: 0.9rem;
    color: var(--text-soft);
    font-weight: 600;
}
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 14px;
    margin-top: 26px;
}
.hero-stat {
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 12px;
    padding: 12px 18px;
    min-width: 86px;
}
.hero-stat strong {
    display: block;
    font-size: 1.5rem;
    color: var(--accent);
    line-height: 1.2;
}
.hero-stat span { font-size: 0.78rem; color: #c7d3e6; }
.section-lead {
    text-align: center;
    color: var(--text-soft);
    font-size: 0.95rem;
    margin: -12px 0 22px;
}

/* ===== 参考サイトモデル：全幅セクション構造 ===== */
.fullbleed {
    position: relative;
    left: 50%;
    right: 50%;
    width: 100vw;
    margin-left: -50vw;
    margin-right: -50vw;
}
.sec { padding: 56px 20px; }
.sec--alt { background: #eef2f8; }
.sec--white { background: #ffffff; }
.sec--navy {
    background: linear-gradient(160deg, var(--navy) 0%, var(--navy-deep) 100%);
    color: #fff;
}
.sec-inner { max-width: 860px; margin: 0 auto; }
.sec-head {
    text-align: center;
    margin-bottom: 34px;
}
.sec-head h2 {
    font-size: 1.55rem;
    font-weight: 800;
    color: var(--navy);
    margin-bottom: 10px;
}
.sec-head h2::after {
    content: "";
    display: block;
    width: 48px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
    margin: 12px auto 0;
}
.sec-head p { color: var(--text-soft); font-size: 0.96rem; }

/* CTA バンド（行動ボタン・参考サイトのように繰り返す） */
.cta-band {
    text-align: center;
    padding: 44px 20px;
}
.cta-band.fullbleed { background: var(--accent-soft); }
.cta-band p {
    color: var(--navy);
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 18px;
}
.btn-cta {
    display: inline-block;
    background: var(--accent);
    color: var(--navy);
    font-size: 1.05rem;
    font-weight: 800;
    text-decoration: none;
    padding: 16px 38px;
    border-radius: 999px;
    box-shadow: 0 6px 18px rgba(201,162,63,0.35);
    transition: transform 0.15s, box-shadow 0.15s;
}
.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(201,162,63,0.45);
}
.btn-cta-sub {
    display: block;
    margin-top: 12px;
    color: var(--text-soft);
    font-size: 0.85rem;
}
.sec--navy .cta-band p { color: #fff; }

/* アプリ機能ホーム（毎日開く側・シンプル） */
.apphome-head {
    text-align: center;
    margin: 10px 0 26px;
}
.apphome-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--navy);
    margin-bottom: 8px;
}
.apphome-sub { color: var(--text-soft); font-size: 0.95rem; }
.apphome-foot { text-align: center; margin-top: 30px; }
.apphome-link {
    color: var(--text-soft);
    font-size: 0.88rem;
    text-decoration: none;
}
.apphome-link:hover { color: var(--primary); }

/* イントロ説明 */
.intro { margin: 8px 0; }
.intro-text {
    background: var(--card);
    border: 1px solid var(--border);
    border-left: 4px solid var(--accent);
    border-radius: 12px;
    padding: 22px 24px;
    font-size: 1rem;
    line-height: 1.95;
    color: var(--text);
}
.intro-text strong { color: var(--navy); }

/* 選ばれる理由 */
.strength-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}
.strength-item {
    display: flex;
    gap: 14px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px 20px;
}
.strength-icon {
    font-size: 1.6rem;
    flex-shrink: 0;
    line-height: 1.4;
}
.strength-item h3 {
    font-size: 1.05rem;
    color: var(--navy);
    margin-bottom: 5px;
}
.strength-item p {
    font-size: 0.92rem;
    color: var(--text-soft);
    line-height: 1.75;
}

/* 学び方ステップ */
.step-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}
.step-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px 20px;
}
.step-num {
    flex-shrink: 0;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--navy);
    color: #fff;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
}
.step-item h3 {
    font-size: 1.05rem;
    color: var(--navy);
    margin-bottom: 4px;
}
.step-item p { font-size: 0.92rem; color: var(--text-soft); }

/* 締めの一言 */
.closing-note {
    text-align: center;
    color: var(--text-soft);
    font-size: 0.95rem;
    line-height: 1.9;
    margin-top: 28px;
    padding: 20px;
    background: var(--accent-soft);
    border-radius: 12px;
}
.qual-cta-primary {
    background: var(--primary);
    color: #fff !important;
    border-color: var(--primary);
}
.qual-cta-primary:hover { background: var(--navy); border-color: var(--navy); }

/* 特徴カード */
.features {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
    margin: 28px 0;
}
.feature-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 20px;
    text-align: center;
}
.feature-icon { font-size: 2rem; margin-bottom: 8px; }
.feature-card h3 { font-size: 1.05rem; margin-bottom: 6px; }
.feature-card p { color: var(--text-soft); font-size: 0.9rem; }

/* 資格選択 */
.section-title {
    font-family: "Zen Maru Gothic", "Zen Kaku Gothic New", sans-serif;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--navy);
    text-align: center;
    margin: 40px 0 22px;
}
.qual-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
}
.qual-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 26px 26px 24px;
    text-decoration: none;
    color: var(--text);
    display: block;
    box-shadow: 0 1px 2px rgba(19,49,90,0.04);
    transition: transform 0.12s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}
.qual-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 34px rgba(19, 49, 90, 0.14);
    border-color: var(--accent);
}
/* /app の学習メニューと同じ作法で、3枚を別の色で色付け */
.qual-grid .qual-card:nth-child(3n+1) {
    border-color: rgba(30,91,168,0.30);
    background:
        radial-gradient(120% 80% at 0% 0%, rgba(30,91,168,0.09), transparent 55%),
        #f4f8fd;
}
.qual-grid .qual-card:nth-child(3n+2) {
    border-color: rgba(46,125,79,0.30);
    background:
        radial-gradient(120% 80% at 0% 0%, rgba(46,125,79,0.09), transparent 55%),
        #f3faf5;
}
.qual-grid .qual-card:nth-child(3n+3) {
    border-color: rgba(201,162,63,0.40);
    background:
        radial-gradient(120% 80% at 0% 0%, rgba(224,187,82,0.10), transparent 55%),
        #fffdf6;
}
.qual-badge {
    display: inline-block;
    background: #eef4fd;
    color: var(--primary);
    font-size: 0.82rem;
    font-weight: 800;
    padding: 5px 13px;
    border-radius: 999px;
    margin-bottom: 12px;
}
.qual-desc {
    color: var(--text-soft);
    font-size: 1rem;
    line-height: 1.85;
    margin-bottom: 18px;
}
.quiz-intro {
    max-width: 640px;
    margin: 0 auto 14px;
    text-align: center;
    color: var(--text-soft);
    font-size: 1rem;
    line-height: 1.95;
}
.quiz-intro strong { color: var(--navy); }
.qual-name {
    font-family: "Zen Maru Gothic", "Zen Kaku Gothic New", sans-serif;
    font-weight: 700;
    color: var(--navy);
    line-height: 1.45;
    font-size: 1.34rem;
    margin-bottom: 12px;
}
.qual-meta {
    display: flex;
    justify-content: space-between;
    color: var(--text-soft);
    font-size: 0.9rem;
    margin-bottom: 14px;
}
.qual-stars { color: var(--accent); }
.qual-actions { display: flex; gap: 10px; }
.qual-cta {
    color: var(--navy);
    font-weight: 800;
    font-size: 1rem;
    text-decoration: none;
    flex: 1;
    text-align: center;
    border: 2px solid var(--navy);
    border-radius: 12px;
    padding: 13px 10px;
    transition: background 0.15s, color 0.15s;
}
.qual-cta:hover { background: var(--navy); color: #fff; }

/* 教科書レッスン */
.lesson-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 26px;
}
.lesson-title { font-size: 1.7rem; font-weight: 700; margin: 12px 0 8px; letter-spacing: .02em; }
.lesson-summary {
    color: var(--text-soft);
    font-size: 1.02rem;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}
.lesson-section { margin-bottom: 38px; }
.lesson-heading {
    font-size: 1.32rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 16px;
    padding-left: 14px;
    border-left: 5px solid var(--accent);
    line-height: 1.45;
}
.lesson-body {
    font-size: 1.0rem;
    line-height: 1.95;
    color: #2c3a4a;
    letter-spacing: .015em;
}
/* 黄色マーカー（==テキスト== で引ける・JIN:R風の下線マーカー）
   教科書本文・問題解説の両方に適用 */
.lesson-body .hl,
.explanation .hl {
    background: linear-gradient(transparent 58%, #fff3a0 58%, #ffec70 100%);
    padding: 0 .1em;
    font-weight: 500;
    border-radius: 1px;
}
.lesson-figure {
    margin: 16px 0 4px;
    text-align: center;
}
.lesson-figure img {
    max-width: 100%;
    height: auto;
    border: 1px solid var(--border);
    border-radius: 10px;
}
.lesson-figure figcaption {
    font-size: 0.85rem;
    color: var(--text-soft);
    margin-top: 8px;
}

/* 写真準備中（父さんが後で実写を入れる枠） */
.photo-pending {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: #f1f4f9;
    border: 2px dashed #b9c4d4;
    border-radius: 12px;
    padding: 28px 16px;
    margin: 16px 0 4px;
}
.photo-pending-icon { font-size: 1.8rem; opacity: 0.6; }
.photo-pending-text {
    font-size: 0.86rem;
    color: var(--text-soft);
    font-weight: 600;
}
.lesson-cta {
    background: #f8fafc;
    border-radius: 12px;
    padding: 22px;
    text-align: center;
    margin-top: 10px;
}
.lesson-cta p { margin-bottom: 14px; color: var(--text-soft); }

/* 問題演習 */
.study-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}
.study-qual { font-weight: 700; }
.study-progress { color: var(--text-soft); font-size: 0.9rem; }

.progress-bar {
    background: var(--border);
    height: 8px;
    border-radius: 999px;
    overflow: hidden;
    margin-bottom: 22px;
}
.progress-fill {
    background: var(--primary);
    height: 100%;
    transition: width 0.3s;
}

.question-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
}
.subject-tag {
    display: inline-block;
    background: #fff3e0;
    color: #e65100;
    font-size: 0.78rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 999px;
    margin-bottom: 14px;
}
.question-text {
    font-size: 1.16rem;
    font-weight: 600;
    line-height: 1.85;
    margin-bottom: 24px;
    letter-spacing: .015em;
}

.choices { display: flex; flex-direction: column; gap: 10px; }
.choice-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    background: var(--card);
    border: 2px solid var(--border);
    border-radius: 12px;
    padding: 14px 16px;
    font-size: 1rem;
    text-align: left;
    cursor: pointer;
    font-family: inherit;
    color: var(--text);
    transition: border-color 0.15s, background 0.15s;
}
.choice-btn:hover { border-color: var(--primary); background: #f7faff; }
.choice-label {
    background: var(--bg);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}
.choice-text { flex: 1; }
.choice-icon { font-size: 0.85rem; font-weight: 700; }

.choice-correct {
    border-color: var(--correct);
    background: #e8f5e9;
}
.choice-correct .choice-icon { color: var(--correct); }
.choice-wrong {
    border-color: var(--wrong);
    background: #ffebee;
}
.choice-wrong .choice-icon { color: var(--wrong); }

.result-banner {
    text-align: center;
    font-size: 1.2rem;
    font-weight: 800;
    padding: 14px;
    border-radius: 12px;
    margin: 22px 0;
}
.banner-correct { background: #e8f5e9; color: var(--correct); }
.banner-wrong { background: #ffebee; color: var(--wrong); }

.explanation {
    background: #f8fafc;
    border-left: 4px solid var(--primary);
    border-radius: 8px;
    padding: 18px;
    margin-bottom: 22px;
}
.explanation h4 { color: var(--primary); margin-bottom: 10px; }
.explanation p { font-size: 1.02rem; line-height: 1.95; color: #2c3a4a; letter-spacing: .01em; }

.next-btn {
    display: block;
    background: var(--primary);
    color: #fff;
    text-align: center;
    padding: 16px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.05rem;
    transition: background 0.15s;
}
.next-btn:hover { background: var(--primary-dark); }

/* 結果ページ */
.result-page { text-align: center; padding: 20px 0; }
.result-title { font-size: 1.5rem; margin-bottom: 4px; }
.result-sub { color: var(--text-soft); margin-bottom: 30px; }
.score-circle {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0 auto 26px;
    border: 10px solid;
}
.score-pass { border-color: var(--correct); background: #e8f5e9; }
.score-fail { border-color: var(--accent); background: #fff3e0; }
.score-rate { font-size: 3rem; font-weight: 800; }
.score-detail { color: var(--text-soft); }
.result-message {
    font-size: 1.05rem;
    margin-bottom: 30px;
    padding: 0 10px;
}
.result-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 360px;
    margin: 0 auto;
}
.ghost-btn {
    display: block;
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
    text-align: center;
    padding: 14px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 700;
}
.ghost-btn:hover { background: #f0f6ff; }

/* フッター */
.site-footer {
    text-align: center;
    padding: 30px 20px;
    color: var(--text-soft);
    font-size: 0.85rem;
    border-top: 1px solid var(--border);
    background: var(--card);
}
.footer-small { font-size: 0.78rem; margin-top: 4px; opacity: 0.8; }
.footer-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px 18px;
    margin: 12px 0 8px;
}
.footer-nav a {
    color: var(--text-soft);
    text-decoration: none;
    font-size: 0.82rem;
    border-bottom: 1px dotted currentColor;
    padding-bottom: 1px;
}
.footer-nav a:hover { color: var(--navy); }

/* 法務・運営ページ */
.legal { line-height: 1.95; }
.legal-title {
    font-size: 1.55rem;
    font-weight: 800;
    color: var(--navy);
    margin: 6px 0 22px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border);
}
.legal h2 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--navy);
    margin: 26px 0 6px;
    padding-left: 11px;
    border-left: 4px solid var(--accent);
}
.legal p { margin: 0 0 6px; color: var(--text); }
.legal a { color: #1c64c4; }

.exam-note {
    background: #fff8e1;
    border: 1px solid #e8d48a;
    border-radius: 10px;
    padding: 12px 15px;
    font-size: 0.9rem;
    margin: 14px 0 8px;
}
.exam-table {
    width: 100%;
    border-collapse: collapse;
    margin: 8px 0 10px;
    font-size: 0.95rem;
}
.exam-table th, .exam-table td {
    border: 1px solid var(--border);
    padding: 10px 12px;
    text-align: left;
    vertical-align: top;
}
.exam-table th {
    background: #f3f6fb;
    color: var(--navy);
    font-weight: 700;
    white-space: nowrap;
    width: 38%;
}
.exam-table small { color: var(--text-soft); font-size: 0.8rem; }

.kako-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin: 22px 0 8px;
}
.kako-card {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 22px 22px 20px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: var(--card);
    text-decoration: none;
    box-shadow: 0 1px 2px rgba(19,49,90,0.04);
    transition: border-color 0.15s, transform 0.12s, box-shadow 0.15s;
}
.kako-card:hover {
    border-color: var(--accent);
    transform: translateY(-3px);
    box-shadow: 0 14px 34px rgba(19,49,90,0.14);
}
.kako-grid .kako-card:nth-child(3n+1) {
    border-color: rgba(30,91,168,0.30);
    background: radial-gradient(120% 80% at 0% 0%, rgba(30,91,168,0.09), transparent 55%), #f4f8fd;
}
.kako-grid .kako-card:nth-child(3n+2) {
    border-color: rgba(46,125,79,0.30);
    background: radial-gradient(120% 80% at 0% 0%, rgba(46,125,79,0.09), transparent 55%), #f3faf5;
}
.kako-grid .kako-card:nth-child(3n+3) {
    border-color: rgba(201,162,63,0.40);
    background: radial-gradient(120% 80% at 0% 0%, rgba(224,187,82,0.10), transparent 55%), #fffdf6;
}
.kako-emoji { font-size: 1.9rem; }
.kako-name { font-family: "Zen Maru Gothic", "Zen Kaku Gothic New", sans-serif; font-weight: 700; color: var(--navy); font-size: 1.2rem; line-height: 1.45; }
.kako-desc { font-size: 0.95rem; color: var(--text-soft); line-height: 1.7; }
.kako-section-title {
    font-family: "Zen Maru Gothic", "Zen Kaku Gothic New", sans-serif;
    font-weight: 700;
    color: var(--navy);
    font-size: 1.3rem;
    margin: 34px 0 6px;
}
.kako-section-lead {
    color: var(--text-soft);
    font-size: 0.98rem;
    line-height: 1.85;
    margin: 0 0 4px;
}
@media (min-width: 640px) {
    .kako-grid { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
}

/* 過去問 解く画面 */
.kako-q-figure {
    margin: 14px 0 18px;
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    background: #fff;
}
.kako-q-figure img { display: block; width: 100%; height: auto; }
.calc-note {
    margin: 4px 0 10px;
    font-size: 0.9rem;
    color: #334;
    background: #eef4fc;
    border: 1px solid #c7d8ef;
    border-radius: 8px;
    padding: 9px 12px;
    line-height: 1.7;
}
.zu-guide {
    margin: 4px 0 8px;
    font-size: 0.92rem;
    color: var(--navy);
    background: #fff8e1;
    border: 1px solid #e8d48a;
    border-radius: 8px;
    padding: 9px 12px;
}
.zu-box {
    margin: 10px 0 14px;
    border: 1px solid #cdd8ea;
    border-radius: 10px;
    background: #f3f6fb;
}
.zu-box summary {
    cursor: pointer;
    padding: 11px 14px;
    font-weight: 700;
    color: var(--navy);
    font-size: 0.95rem;
}
.zu-img {
    display: block;
    width: 100%;
    height: auto;
    border-top: 1px solid #cdd8ea;
}
/* 過去問の画面だけ横幅を広げて問題画像を大きく見せる */
.kako-stage {
    width: 88vw;
    max-width: 880px;
    position: relative;
    left: 50%;
    transform: translateX(-50%);
}
.choices-letters {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    max-width: 460px;
    margin: 0 auto;
}
.choices-letters .choice-btn {
    justify-content: center;
    padding: 9px 0;
    font-size: 1.05rem;
    font-weight: 800;
    background: #eef4fc;
    border: 1px solid #c7d8ef;
    color: var(--navy);
    transition: background 0.15s, border-color 0.15s, transform 0.08s;
}
.choices-letters .choice-btn:hover {
    background: #dbe8fa;
    border-color: var(--navy);
    transform: translateY(-1px);
}
.choices-letters .choice-label { margin: 0; }
.ans-pick { font-size: 0.85rem; font-weight: 600; margin-left: 10px; opacity: 0.9; }
.kako-answer {
    margin: 16px 0;
    padding: 16px 18px;
    background: #f7faf7;
    border: 1px solid #cfe3cf;
    border-radius: 10px;
}
.kako-answer h4 { margin: 0 0 4px; color: var(--navy); font-size: 0.9rem; }
.kako-correct {
    font-size: 1.8rem;
    font-weight: 900;
    color: #1f7a37;
    margin: 0 0 8px;
}
.kako-note { font-size: 0.86rem; color: var(--text-soft); margin: 0 0 6px; }
.kako-source { font-size: 0.8rem; color: var(--text-soft); margin: 0; }
.kako-explain {
    margin: 10px 0 12px;
    padding-top: 12px;
    border-top: 1px dashed #cfe3cf;
}
.kako-explain h4 { margin: 0 0 6px; color: var(--navy); font-size: 0.95rem; }
.kako-explain p {
    margin: 0;
    font-size: 1rem;
    line-height: 1.95;
    color: var(--text);
}

/* パソコン画面では特徴カードを横3列に */
@media (min-width: 640px) {
    .features { grid-template-columns: repeat(3, 1fr); }
    .qual-grid { grid-template-columns: repeat(3, 1fr); }
    .strength-list { grid-template-columns: repeat(2, 1fr); }
    .step-list { grid-template-columns: repeat(3, 1fr); }
    .hero-title { font-size: 2.3rem; }
}

/* 「ここだけは覚える」を目立つPOINTボックスに */
.point-box {
    position: relative;
    background: var(--accent-soft);
    border: 1px solid #e7d9a8;
    border-left: 5px solid var(--accent);
    border-radius: 12px;
    padding: 20px 22px 18px;
    margin-top: 40px;
}
.point-head {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}
.point-badge {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    padding: 3px 14px;
    border-radius: 999px;
}
.point-box .lesson-heading {
    color: var(--navy);
}
.point-mascot {
    width: 38px;
    height: auto;
    flex: none;
    pointer-events: none;
}
@media (min-width: 640px) {
    .point-mascot { width: 45px; }
}