/* ==========================================================================
   WinBe梅ヶ丘校 2026 サマーコース ポータル
   Design System: "Modern Pop Refined"
   - Base: 生成り白 / Brand: ディープティール / Accent: 琥珀 + コーラル
   - 黒枠4px・板影を廃止 → 細線・柔らか拡散影 / 絵文字 → 線画SVG
   ========================================================================== */

:root {
    /* ---- Base (信頼ベース・画面の8割) ---- */
    --bg: #FBFAF7;          /* 生成りの白 */
    --bg-warm: #F6F1E9;     /* 温かみのある淡色面 */
    --surface: #FFFFFF;     /* カード面 */
    --ink: #1F2A37;         /* 主役テキスト（黒より柔らかい濃紺グレー）*/
    --ink-sub: #5B6573;     /* 補助テキスト */
    --line: #E7E3DB;        /* 極細の境界線（黒枠の代替）*/
    --line-strong: #D8D2C6;

    /* ---- Brand (主役・知的ティール) ---- */
    --brand: #0F6E73;
    --brand-dark: #0A5256;
    --brand-soft: #E6F1F0;
    --brand-tint: #F0F7F6;

    /* ---- Accent (子供の温かみ・面積は小さく) ---- */
    --amber: #F4A340;       /* 琥珀オレンジ */
    --amber-soft: #FFF1DE;
    --coral: #E5707E;       /* くすみコーラル */
    --coral-soft: #FCE9EB;

    /* ---- Course Accents (くすませた識別色) ---- */
    --c-family: #E5707E;    --c-family-soft: #FCE9EB;   /* コーラル */
    --c-ksp: #E0922B;       --c-ksp-soft: #FBEFD9;      /* ゴールド */
    --c-research: #2E9E8F;  --c-research-soft: #E0F2EF; /* ティールグリーン */
    --c-phonics: #3E84C4;   --c-phonics-soft: #E5EFF9;  /* ブルー */
    --c-grammar: #6E62C4;   --c-grammar-soft: #ECEAFB; /* インディゴ（集中・アカデミック）*/

    /* ---- Semantic ---- */
    --success: #3F9D6B;
    --success-soft: #E4F3EB;

    /* ---- Fonts ---- */
    --font-en: 'Outfit', sans-serif;
    --font-jp: 'Noto Sans JP', sans-serif;
    --font-round: 'M PLUS Rounded 1c', 'Noto Sans JP', sans-serif;

    /* ---- Soft Shadows (拡散影) ---- */
    --shadow-xs: 0 1px 2px rgba(31, 42, 55, 0.06);
    --shadow-sm: 0 4px 14px rgba(31, 42, 55, 0.07);
    --shadow-md: 0 10px 30px rgba(31, 42, 55, 0.09);
    --shadow-lg: 0 20px 50px rgba(31, 42, 55, 0.12);
    --shadow-brand: 0 12px 28px rgba(15, 110, 115, 0.28);

    /* ---- Radius ---- */
    --r-xs: 8px;
    --r-sm: 12px;
    --r-md: 18px;
    --r-lg: 24px;
    --r-full: 9999px;

    /* ---- Spacing rhythm (8pt grid) ---- */
    --sp-section: 112px;
    --sp-section-sm: 76px;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    font-family: var(--font-jp);
    background-color: var(--bg);
    color: var(--ink);
    line-height: 1.85;
    font-weight: 400;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }

h1, h2, h3, h4 { color: var(--ink); line-height: 1.45; font-weight: 700; }
p { color: var(--ink-sub); }

.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

section {
    padding: var(--sp-section) 0;
    position: relative;
}

/* ==========================================================================
   Shared Typographic Helpers
   ========================================================================== */
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-en);
    font-weight: 700;
    font-size: 0.82rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--brand);
}
.eyebrow::before {
    content: '';
    width: 22px;
    height: 2px;
    background: var(--brand);
    border-radius: 2px;
}

.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 64px;
}
.section-header .eyebrow { margin-bottom: 18px; }
.section-header h2 {
    font-size: clamp(1.9rem, 4vw, 2.6rem);
    font-weight: 800;
    letter-spacing: 0.01em;
    margin-bottom: 18px;
}
.section-header p {
    font-size: 1.08rem;
    color: var(--ink-sub);
    font-weight: 500;
    line-height: 1.8;
}

/* Marker-style highlight (refined, thin) */
.mark {
    background: linear-gradient(transparent 62%, var(--amber-soft) 62%);
    padding: 0 2px;
    font-weight: inherit;
}
.mark-brand { color: var(--brand); font-weight: 800; }
.mark-coral { color: var(--coral); font-weight: 800; }

/* Decorative giant English watermark behind section titles */
.sec-watermark {
    font-family: var(--font-en);
    font-weight: 800;
    color: var(--brand);
    opacity: 0.06;
    letter-spacing: -0.02em;
    line-height: 1;
    pointer-events: none;
    user-select: none;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-family: var(--font-jp);
    font-weight: 700;
    font-size: 1rem;
    line-height: 1.2;
    padding: 15px 30px;
    border: none;
    border-radius: var(--r-full);
    cursor: pointer;
    transition: transform .25s cubic-bezier(.2,.7,.3,1),
                box-shadow .25s cubic-bezier(.2,.7,.3,1),
                background-color .2s ease;
    will-change: transform;
}
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }

.btn-primary {
    background: var(--brand);
    color: #fff;
    box-shadow: var(--shadow-brand);
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 18px 36px rgba(15, 110, 115, 0.34);
    background: var(--brand-dark);
}

.btn-accent {
    background: var(--amber);
    color: #5a3a0a;
    box-shadow: 0 12px 26px rgba(244, 163, 64, 0.32);
}
.btn-accent:hover {
    transform: translateY(-3px);
    box-shadow: 0 18px 34px rgba(244, 163, 64, 0.4);
}

.btn-ghost {
    background: var(--surface);
    color: var(--ink);
    border: 1.5px solid var(--line-strong);
    box-shadow: var(--shadow-xs);
}
.btn-ghost:hover {
    transform: translateY(-3px);
    border-color: var(--brand);
    color: var(--brand);
    box-shadow: var(--shadow-sm);
}

.btn-lg { padding: 18px 42px; font-size: 1.1rem; }
.btn-block { width: 100%; }

/* ==========================================================================
   Header (Glassy fixed)
   ========================================================================== */
.site-header {
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(251, 250, 247, 0.78);
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    border-bottom: 1px solid transparent;
    transition: border-color .3s ease, box-shadow .3s ease, background-color .3s ease;
}
.site-header.scrolled {
    border-bottom-color: var(--line);
    box-shadow: var(--shadow-xs);
    background: rgba(251, 250, 247, 0.92);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.brand-logo {
    display: flex;
    align-items: baseline;
    gap: 9px;
}
.brand-logo .mark-en {
    font-family: var(--font-en);
    font-weight: 800;
    font-size: 1.55rem;
    letter-spacing: -0.01em;
    color: var(--ink);
}
.brand-logo .mark-jp {
    font-family: var(--font-jp);
    font-weight: 800;
    font-size: 0.78rem;
    color: var(--brand);
    background: var(--brand-soft);
    padding: 4px 11px;
    border-radius: var(--r-full);
}

.nav-desktop {
    display: flex;
    align-items: center;
    gap: 6px;
}
.nav-desktop a {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--ink);
    padding: 9px 14px;
    border-radius: var(--r-sm);
    transition: color .2s, background-color .2s;
}
.nav-desktop a:not(.nav-cta):hover { color: var(--brand); background: var(--brand-tint); }
.nav-desktop .nav-cta {
    margin-left: 10px;
    background: var(--brand);
    color: #fff;
    font-weight: 700;
    padding: 10px 22px;
    box-shadow: var(--shadow-brand);
    border-radius: var(--r-full);
    transition: transform .25s cubic-bezier(.2,.7,.3,1), box-shadow .25s;
}
.nav-desktop .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 16px 30px rgba(15,110,115,.34); background: var(--brand); }

/* Hamburger */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 46px;
    height: 46px;
    background: var(--surface);
    border: 1.5px solid var(--line-strong);
    border-radius: var(--r-sm);
    padding: 0 11px;
    z-index: 1100;
}
.nav-toggle span {
    display: block;
    height: 2.5px;
    width: 100%;
    background: var(--ink);
    border-radius: 2px;
    transition: transform .3s ease, opacity .25s ease;
}
body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* Mobile drawer */
.nav-mobile {
    position: fixed;
    inset: 0;
    background: rgba(251, 250, 247, 0.99);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity .3s ease, transform .3s ease, visibility .3s;
    z-index: 1050;
}
body.nav-open .nav-mobile { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-mobile a {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--ink);
    padding: 14px 28px;
}
.nav-mobile a.nav-cta {
    margin-top: 18px;
    background: var(--brand);
    color: #fff;
    border-radius: var(--r-full);
    box-shadow: var(--shadow-brand);
}

@media (max-width: 880px) {
    .nav-desktop { display: none; }
    .nav-toggle { display: flex; }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
    position: relative;
    padding: 190px 0 150px;
    /* 全幅の背景写真を固定（パララックス）。スクロールすると文字だけが画像の上を滑る。 */
    background-image: url("images/hero-bg.jpg");
    background-size: cover;
    background-position: 70% center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    overflow: hidden;
}
/* 文字の可読性を保つ透過スクリム（左ほど明るく＝テキスト側、右は写真が透ける） */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        100deg,
        rgba(255, 255, 255, 0.94) 0%,
        rgba(255, 255, 255, 0.86) 34%,
        rgba(255, 255, 255, 0.55) 56%,
        rgba(255, 255, 255, 0.12) 78%,
        rgba(255, 255, 255, 0) 100%
    );
    z-index: 0;
}
.hero-grid {
    position: relative;
    z-index: 1;
    display: block;
    max-width: 660px;
}
.hero-eyebrow {
    font-family: var(--font-en);
    font-weight: 700;
    font-size: 0.86rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--brand);
    margin-bottom: 22px;
    display: inline-block;
}
.hero-title {
    font-size: clamp(2.3rem, 5.2vw, 3.5rem);
    font-weight: 800;
    line-height: 1.32;
    letter-spacing: 0.01em;
    margin-bottom: 24px;
}
.hero-title .lg {
    display: inline-block;
    color: var(--brand);
    position: relative;
}
.hero-title .lg::after {
    content: '';
    position: absolute;
    left: -2px; right: -2px; bottom: 4px;
    height: 12px;
    background: var(--amber-soft);
    z-index: -1;
    border-radius: 3px;
}
.hero-desc {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--ink-sub);
    line-height: 1.85;
    margin-bottom: 28px;
    max-width: 520px;
}
.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 36px;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: var(--surface);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-xs);
    border-radius: var(--r-full);
    padding: 8px 16px 8px 12px;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--ink);
}
.hero-badge svg { width: 17px; height: 17px; color: var(--brand); }
.hero-badge.amber svg { color: #B87219; }
.hero-badge.coral svg { color: #C74F5C; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
/* 旧 .hero-visual / .hero-float（右カラムのフォトカード）はヒーロー全幅背景化に伴い撤去済み。 */

/* ==========================================================================
   Philosophy / Why chosen
   ========================================================================== */
.philosophy { background: var(--surface); }
.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(252px, 1fr));
    gap: 28px;
}
.phi-card {
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    padding: 40px 32px;
    text-align: center;
    transition: transform .3s cubic-bezier(.2,.7,.3,1), box-shadow .3s, border-color .3s;
}
.phi-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: var(--brand-soft);
}
.phi-icon {
    width: 78px; height: 78px;
    margin: 0 auto 22px;
    border-radius: var(--r-full);
    display: flex; align-items: center; justify-content: center;
    color: #fff;
}
.phi-icon svg { width: 36px; height: 36px; }
.phi-card:nth-child(1) .phi-icon { background: linear-gradient(135deg, var(--coral), #d85666); }
.phi-card:nth-child(2) .phi-icon { background: linear-gradient(135deg, var(--brand), var(--brand-dark)); }
.phi-card:nth-child(3) .phi-icon { background: linear-gradient(135deg, var(--amber), #e08a1e); }
.phi-card h3 { font-size: 1.25rem; font-weight: 800; margin-bottom: 14px; line-height: 1.5; }
.phi-card p { font-size: 0.98rem; line-height: 1.8; }

/* ==========================================================================
   Course Finder
   ========================================================================== */
.finder { background: var(--bg); }
.finder-box {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    padding: 52px;
    box-shadow: var(--shadow-md);
    max-width: 880px;
    margin: 0 auto;
}
.finder-head { text-align: center; margin-bottom: 40px; }
.finder-head h3 { font-size: 1.6rem; font-weight: 800; margin-bottom: 10px; }
.finder-head p { font-size: 1rem; color: var(--ink-sub); font-weight: 500; }
.finder-steps { display: flex; flex-direction: column; gap: 26px; }
.finder-row { display: flex; align-items: flex-start; gap: 22px; flex-wrap: wrap; }
.finder-label {
    font-weight: 800;
    font-size: 1rem;
    color: var(--ink);
    min-width: 132px;
    padding-top: 8px;
    display: flex; align-items: center; gap: 8px;
}
.finder-label .num {
    width: 26px; height: 26px;
    border-radius: var(--r-full);
    background: var(--brand);
    color: #fff;
    font-family: var(--font-en);
    font-weight: 800;
    font-size: 0.9rem;
    display: inline-flex; align-items: center; justify-content: center;
}
.finder-options { display: flex; gap: 10px; flex-wrap: wrap; flex: 1; }
.finder-btn {
    background: var(--surface);
    border: 1.5px solid var(--line-strong);
    padding: 9px 18px;
    border-radius: var(--r-full);
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--ink-sub);
    transition: all .2s ease;
}
.finder-btn:hover { border-color: var(--brand); color: var(--brand); background: var(--brand-tint); }
.finder-btn.active {
    background: var(--brand);
    border-color: var(--brand);
    color: #fff;
    box-shadow: var(--shadow-brand);
}
.finder-result {
    margin-top: 38px;
    border-top: 1px solid var(--line);
    padding-top: 36px;
    text-align: center;
}
.finder-result h4 { font-size: 1.15rem; font-weight: 800; margin-bottom: 20px; color: var(--ink); }
.result-cards { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
.result-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--brand-tint);
    border: 1.5px solid var(--brand-soft);
    color: var(--brand-dark);
    font-weight: 700;
    font-size: 0.92rem;
    padding: 10px 20px;
    border-radius: var(--r-full);
    transition: all .2s ease;
}
.result-chip:hover { background: var(--brand); color: #fff; border-color: var(--brand); transform: translateY(-2px); }
.result-chip .arr { font-size: 0.78rem; opacity: 0.7; }

/* Course finder dimming (course items live in Batch C) */
.course-item { transition: opacity .35s ease, filter .35s ease, transform .35s ease; }
.course-item.dimmed { opacity: 0.42; filter: grayscale(55%); transform: scale(0.99); }

/* ==========================================================================
   Courses — Overview strip + detailed items
   ========================================================================== */
.courses { background: var(--surface); }

/* Quick overview cards */
.course-nav {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 96px;
}
.ov-card {
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    overflow: hidden;
    box-shadow: var(--shadow-xs);
    transition: transform .3s cubic-bezier(.2,.7,.3,1), box-shadow .3s, border-color .3s;
}
.ov-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--brand-soft); }
.ov-img { aspect-ratio: 3 / 2; overflow: hidden; background: var(--bg-warm); }
.ov-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.ov-card:hover .ov-img img { transform: scale(1.05); }

/* Image-less course visual (gradient placeholder) */
.media-placeholder {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 8px; text-align: center; padding: 16px;
    background: linear-gradient(135deg, var(--c-grammar) 0%, #574bb0 100%);
    color: #fff;
}
.media-placeholder svg { width: 48px; height: 48px; opacity: .95; }
.media-placeholder .mp-en { font-family: var(--font-en); font-weight: 800; letter-spacing: .03em; font-size: 1.05rem; line-height: 1.3; }
.media-placeholder .mp-jp { font-size: .78rem; font-weight: 700; opacity: .92; }
.ov-img .media-placeholder { width: 100%; height: 100%; }
.ov-img .media-placeholder svg { width: 34px; height: 34px; }
.ov-img .media-placeholder .mp-en { font-size: .82rem; }
.course-media .media-placeholder {
    width: 100%; aspect-ratio: 4 / 3.2;
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-md);
}
.course-media .media-placeholder svg { width: 60px; height: 60px; }
.course-media .media-placeholder .mp-en { font-size: 1.4rem; }
.course-media .media-placeholder .mp-jp { font-size: .92rem; }
.ov-body { padding: 15px 16px 17px; display: flex; flex-direction: column; gap: 5px; flex: 1; }
.ov-name { font-size: 0.92rem; font-weight: 800; line-height: 1.45; }
.ov-meta { font-size: 0.76rem; font-weight: 600; color: var(--ink-sub); }
.ov-price { margin-top: auto; padding-top: 6px; font-family: var(--font-en); font-weight: 800; font-size: 1.05rem; color: var(--brand); }
.ov-price .yen { font-size: 0.8rem; }

/* Detailed course item */
.course-item {
    display: grid;
    grid-template-columns: 0.92fr 1.08fr;
    gap: 56px;
    align-items: center;
    margin-bottom: 104px;
    scroll-margin-top: 96px;
}
.course-item:last-child { margin-bottom: 0; }
.course-item.reverse .course-media { order: 2; }

.course-item.family   { --ca: var(--c-family);   --ca-soft: var(--c-family-soft); }
.course-item.ksp      { --ca: var(--c-ksp);      --ca-soft: var(--c-ksp-soft); }
.course-item.research { --ca: var(--c-research); --ca-soft: var(--c-research-soft); }
.course-item.phonics  { --ca: var(--c-phonics);  --ca-soft: var(--c-phonics-soft); }
.course-item.grammar  { --ca: var(--c-grammar);  --ca-soft: var(--c-grammar-soft); }

.course-media { position: relative; }
.course-media img {
    width: 100%;
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-md);
    aspect-ratio: 4 / 3.2;
    object-fit: cover;
}
.course-media::before {
    content: '';
    position: absolute;
    inset: auto auto -14px -14px;
    width: 60%; height: 60%;
    background: var(--ca-soft);
    border-radius: var(--r-lg);
    z-index: -1;
}
.course-no {
    position: absolute;
    top: 16px; left: 16px;
    width: 42px; height: 42px;
    border-radius: var(--r-full);
    background: var(--ca);
    color: #fff;
    font-family: var(--font-en);
    font-weight: 800;
    font-size: 1.1rem;
    display: flex; align-items: center; justify-content: center;
    box-shadow: var(--shadow-sm);
}

.course-tag {
    display: inline-block;
    background: var(--ca-soft);
    color: var(--ca);
    font-size: 0.8rem;
    font-weight: 800;
    padding: 5px 15px;
    border-radius: var(--r-full);
    margin-bottom: 16px;
}
.course-name { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 800; line-height: 1.4; margin-bottom: 10px; }
.course-tagline { font-size: 1.08rem; font-weight: 700; color: var(--ca); margin-bottom: 18px; line-height: 1.6; }
.course-summary { font-size: 0.98rem; line-height: 1.85; margin-bottom: 24px; }

.course-highlights { display: flex; flex-direction: column; gap: 11px; margin-bottom: 26px; }
.course-highlights li {
    display: flex; gap: 11px; align-items: flex-start;
    font-size: 0.92rem; font-weight: 600; color: var(--ink); line-height: 1.65;
}
.course-highlights li svg { width: 20px; height: 20px; flex-shrink: 0; color: var(--ca); margin-top: 2px; }

.course-specs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px 22px;
    padding: 22px 24px;
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    margin-bottom: 26px;
}
.spec h4 {
    font-size: 0.72rem; font-weight: 700; letter-spacing: 0.04em;
    text-transform: uppercase; color: var(--ink-sub); margin-bottom: 3px;
}
.spec p { font-size: 1rem; font-weight: 800; color: var(--ink); line-height: 1.4; }
.spec .price { font-family: var(--font-en); font-size: 1.45rem; color: var(--ca); }
.spec .price .yen { font-size: 0.85rem; }

.btn-course {
    background: var(--ca);
    color: #fff;
    box-shadow: 0 12px 26px rgba(31, 42, 55, 0.16);
}
.btn-course:hover { transform: translateY(-3px); filter: brightness(0.96); box-shadow: 0 18px 32px rgba(31, 42, 55, 0.22); }

/* ==========================================================================
   Campaign band (seigaiha-inspired)
   ========================================================================== */
.campaign {
    background-color: var(--brand);
    background-image:
        radial-gradient(circle at 20px 34px, transparent 16px, rgba(255,255,255,.10) 17px, rgba(255,255,255,.10) 18px, transparent 19px),
        radial-gradient(circle at 40px 34px, transparent 16px, rgba(255,255,255,.10) 17px, rgba(255,255,255,.10) 18px, transparent 19px),
        radial-gradient(circle at 0px 34px,  transparent 16px, rgba(255,255,255,.10) 17px, rgba(255,255,255,.10) 18px, transparent 19px);
    background-size: 40px 34px;
    padding: 84px 0;
    text-align: center;
}
.campaign-badge {
    display: inline-block;
    background: var(--amber);
    color: #5a3a0a;
    font-weight: 800;
    font-size: 0.85rem;
    padding: 6px 18px;
    border-radius: var(--r-full);
    margin-bottom: 22px;
}
.campaign h3 { color: #fff; font-size: clamp(1.5rem, 3.4vw, 2.1rem); font-weight: 800; margin-bottom: 16px; }
.campaign p { color: rgba(255,255,255,.92); font-weight: 500; max-width: 680px; margin: 0 auto 26px; line-height: 1.85; }
.campaign-price { margin-bottom: 18px; }
.campaign-price .num { font-family: var(--font-en); font-size: clamp(2.6rem, 7vw, 3.6rem); font-weight: 800; color: #fff; line-height: 1; }
.campaign-price .num .yen { font-size: 1.5rem; }
.campaign-price .unit { font-size: 1.1rem; font-weight: 700; color: rgba(255,255,255,.92); margin-left: 6px; }
.campaign-note { font-size: 0.9rem; font-weight: 600; color: rgba(255,255,255,.8); }

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq { background: var(--bg); }
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    overflow: hidden;
    box-shadow: var(--shadow-xs);
    transition: box-shadow .25s, border-color .25s;
}
.faq-item { scroll-margin-top: 92px; }
.faq-item.active { border-color: var(--brand-soft); box-shadow: var(--shadow-sm); }
.faq-q {
    padding: 22px 24px;
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--ink);
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    cursor: pointer;
    user-select: none;
    line-height: 1.6;
}
.faq-toggle { position: relative; width: 22px; height: 22px; flex-shrink: 0; transition: transform .3s ease; }
.faq-toggle::before, .faq-toggle::after {
    content: '';
    position: absolute; top: 50%; left: 50%;
    background: var(--brand);
    border-radius: 2px;
}
.faq-toggle::before { width: 14px; height: 2.5px; transform: translate(-50%, -50%); }
.faq-toggle::after  { width: 2.5px; height: 14px; transform: translate(-50%, -50%); }
.faq-item.active .faq-toggle { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-item.active .faq-a { max-height: 600px; }
.faq-a-inner { padding: 2px 24px 24px; color: var(--ink-sub); font-size: 0.96rem; font-weight: 500; line-height: 1.85; }

/* ==========================================================================
   CTA section
   ========================================================================== */
.cta {
    background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
    color: #fff;
    text-align: center;
}
.cta h2 { color: #fff; font-size: clamp(1.7rem, 4vw, 2.4rem); font-weight: 800; margin-bottom: 18px; line-height: 1.45; }
.cta p { color: rgba(255,255,255,.92); font-size: 1.08rem; font-weight: 500; max-width: 620px; margin: 0 auto 38px; line-height: 1.8; }
.cta-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.btn-on-dark {
    background: rgba(255,255,255,.14);
    color: #fff;
    border: 1.5px solid rgba(255,255,255,.55);
    backdrop-filter: blur(4px);
}
.btn-on-dark:hover { transform: translateY(-3px); background: rgba(255,255,255,.22); box-shadow: 0 14px 28px rgba(0,0,0,.18); }

/* ==========================================================================
   Application form
   ========================================================================== */
.apply { background: var(--brand-tint); }
.apply-card {
    max-width: 760px;
    margin: 0 auto;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}
.apply-head {
    background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
    color: #fff;
    text-align: center;
    padding: 38px 40px;
}
.apply-head h2 { color: #fff; font-size: 1.5rem; font-weight: 800; margin-bottom: 10px; }
.apply-head p { color: rgba(255,255,255,.9); font-size: 0.95rem; font-weight: 500; line-height: 1.75; }
.apply-body { padding: 44px 48px; }

.form-group { margin-bottom: 22px; text-align: left; }
.form-group-policy { margin: 28px 0; }
.form-group label { display: block; font-weight: 700; font-size: 0.95rem; color: var(--ink); margin-bottom: 8px; }
.required { color: var(--coral); margin-left: 4px; }
.form-control {
    width: 100%;
    padding: 13px 16px;
    font-size: 1rem;
    font-weight: 500;
    font-family: var(--font-jp);
    color: var(--ink);
    background: var(--surface);
    border: 1.5px solid var(--line-strong);
    border-radius: var(--r-sm);
    outline: none;
    transition: border-color .2s ease, box-shadow .2s ease;
}
.form-control::placeholder { color: #aaa49a; }
.form-control:focus { border-color: var(--brand); box-shadow: 0 0 0 3px var(--brand-soft); }
select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231F2A37' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    background-size: 18px;
    padding-right: 46px;
    cursor: pointer;
}
.form-check {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-weight: 600;
    font-size: 0.92rem;
    color: var(--ink);
    cursor: pointer;
    user-select: none;
}
.form-check input[type="checkbox"] {
    margin-top: 4px;
    width: 18px; height: 18px;
    flex-shrink: 0;
    accent-color: var(--brand);
}
.form-check a { color: var(--brand); text-decoration: underline; }
.form-status-msg {
    margin-top: 18px;
    padding: 15px 18px;
    border-radius: var(--r-sm);
    font-weight: 700;
    font-size: 0.95rem;
    display: none;
}
.form-status-msg.success { display: block; background: var(--success-soft); color: #2a6b48; }
.form-status-msg.error { display: block; background: var(--coral-soft); color: #b23a48; }

/* ==========================================================================
   Footer
   ========================================================================== */
footer { background: var(--ink); color: #c4ccd6; padding: 76px 0 36px; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 0.8fr 1fr; gap: 48px; margin-bottom: 44px; }
.footer-info h3 { color: #fff; font-family: var(--font-en); font-weight: 800; font-size: 1.5rem; margin-bottom: 18px; }
.footer-info p { color: #aab3bf; font-size: 0.92rem; font-weight: 500; margin-bottom: 14px; line-height: 1.8; }
.footer-col h4 { color: #fff; font-weight: 700; font-size: 1rem; margin-bottom: 18px; }
.footer-col ul { display: flex; flex-direction: column; gap: 11px; }
.footer-col a { color: #aab3bf; font-size: 0.92rem; font-weight: 500; transition: color .2s; }
.footer-col a:hover { color: var(--amber); }
.footer-map iframe { width: 100%; height: 160px; border: 0; border-radius: var(--r-md); display: block; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.12);
    padding-top: 28px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.82rem;
    color: #8a93a0;
}

/* Back-to-top */
.to-top {
    position: fixed;
    right: 24px; bottom: 24px;
    width: 50px; height: 50px;
    border-radius: var(--r-full);
    background: var(--brand);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    box-shadow: var(--shadow-brand);
    opacity: 0; visibility: hidden;
    transform: translateY(12px);
    transition: opacity .3s ease, transform .3s ease, visibility .3s, background-color .2s;
    z-index: 900;
}
.to-top svg { width: 22px; height: 22px; }
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--brand-dark); transform: translateY(-3px); }

/* ==========================================================================
   Scroll reveal & motion
   ========================================================================== */
.reveal { transition: opacity .6s ease, transform .6s cubic-bezier(.2,.7,.3,1); }
.reveal:not(.revealed) { opacity: 0; transform: translateY(22px); }
/* course-item: when revealed, no opacity override here so .dimmed (.42) still applies */

section[id], #apply { scroll-margin-top: 88px; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .reveal, .reveal:not(.revealed) { opacity: 1; transform: none; transition: none; }
    * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 992px) {
    :root { --sp-section: 88px; --sp-section-sm: 64px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .hero-grid { max-width: none; }
    .hero-desc { max-width: none; }
    .philosophy-grid { gap: 22px; }
    .finder-box { padding: 40px 32px; }
    .course-nav { grid-template-columns: repeat(3, 1fr); margin-bottom: 72px; }
    .course-item { grid-template-columns: 1fr; gap: 32px; margin-bottom: 72px; }
    .course-item.reverse .course-media { order: 0; }
    .course-media { max-width: 520px; margin: 0 auto; width: 100%; }
}

@media (max-width: 720px) {
    /* iOS等で background-attachment:fixed が不安定なため、モバイルは通常スクロール＋スクリムを強める */
    .hero {
        padding: 128px 0 84px;
        background-attachment: scroll;
        background-position: 64% center;
    }
    .hero::before {
        background: linear-gradient(
            160deg,
            rgba(255, 255, 255, 0.95) 0%,
            rgba(255, 255, 255, 0.88) 50%,
            rgba(255, 255, 255, 0.55) 100%
        );
    }
    .hero-cta { flex-direction: column; }
    .hero-cta .btn { width: 100%; }
    .section-header { margin-bottom: 44px; }
    .finder-box { padding: 30px 20px; }
    .finder-head h3 { font-size: 1.35rem; }
    .finder-row { flex-direction: column; gap: 12px; align-items: stretch; }
    .finder-label { min-width: auto; padding-top: 0; }
    .course-nav { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .course-specs { grid-template-columns: 1fr 1fr; padding: 18px; }
    .btn-course { width: 100%; }
    .cta-buttons { flex-direction: column; }
    .cta-buttons .btn { width: 100%; }
    .apply-body { padding: 32px 22px; }
    .apply-head { padding: 30px 24px; }
}

@media (max-width: 420px) {
    .hero-badge { font-size: 0.8rem; padding: 7px 13px 7px 10px; }
    .btn-lg { padding: 15px 26px; font-size: 1rem; }
    .course-nav { grid-template-columns: 1fr 1fr; }
}

/* ===================== 本部開催プログラム（下段・案内のみストリップ） ===================== */
.hq-programs {
    padding: var(--sp-section-sm) 0;
    background: var(--bg-warm);
    border-top: 1px solid var(--line);
}
.hq-head { max-width: 760px; margin: 0 auto 28px; text-align: center; }
.hq-eyebrow {
    display: inline-block;
    font-family: var(--font-en);
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.04em;
    color: var(--ink-sub);
}
.hq-lead {
    margin-top: 10px;
    font-size: 0.92rem;
    line-height: 1.8;
    color: var(--ink-sub);
}
.hq-list {
    list-style: none;
    margin: 0 auto;
    padding: 0;
    max-width: 820px;
    display: flex;
    flex-direction: column;
    gap: 0;
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    overflow: hidden;
    background: var(--surface);
}
.hq-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 22px;
    border-top: 1px solid var(--line);
}
.hq-item:first-child { border-top: none; }
.hq-name {
    flex: 0 0 auto;
    font-weight: 600;
    color: var(--ink);
    font-size: 0.98rem;
}
.hq-date {
    flex: 1 1 auto;
    color: var(--ink-sub);
    font-size: 0.88rem;
}
.hq-link {
    flex: 0 0 auto;
    color: var(--brand);
    font-size: 0.86rem;
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
}
.hq-link:hover { color: var(--brand-dark); text-decoration: underline; }
@media (max-width: 600px) {
    .hq-item { flex-wrap: wrap; gap: 4px 14px; padding: 14px 18px; }
    .hq-date { flex: 1 0 100%; order: 3; }
    .hq-link { margin-left: auto; }
}