/* ====== CSS VARIABLES ====== */
:root {
    --ocean-deep: #003547;
    --ocean-mid: #005f73;
    --ocean-light: #0a9396;
    --ocean-bright: #00b4d8;
    --ocean-pale: #90e0ef;
    --ocean-foam: #caf0f8;
    --text-dark: #0f172a;
    --text-mid: #475569;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: 'Noto Sans JP', sans-serif;
    overflow-x: hidden;
    background: #ffffff;
    color: var(--text-dark);
}
.serif { font-family: 'Shippori Mincho', 'Noto Serif JP', serif; }

/* ====== HEADER ====== */
.header-solid {
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(24px);
    border-bottom: 1px solid rgba(0,0,0,0.04);
    box-shadow: 0 1px 20px rgba(0,0,0,0.04);
}

/* ====== PAGE HERO ====== */
.page-hero {
    position: relative;
    padding: 160px 2rem 80px;
    background: linear-gradient(135deg, var(--ocean-deep) 0%, var(--ocean-mid) 50%, var(--ocean-light) 100%);
    color: white;
    overflow: hidden;
    text-align: center;
}
.page-hero::before {
    content: '';
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse at 30% 30%, rgba(0,180,216,0.15) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 70%, rgba(144,224,239,0.1) 0%, transparent 50%);
}
.page-hero-content { position: relative; z-index: 2; max-width: 800px; margin: 0 auto; }
.page-hero-en {
    font-size: 0.7rem; letter-spacing: 0.35em; text-transform: uppercase;
    opacity: 0.6; margin-bottom: 1rem; font-weight: 500;
}
.page-hero-title {
    font-family: 'Shippori Mincho', serif;
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 700; line-height: 1.5;
    margin-bottom: 1rem;
}
.page-hero-desc {
    font-size: 0.95rem; opacity: 0.8; line-height: 1.9;
    max-width: 600px; margin: 0 auto;
}
.page-hero-wave {
    position: absolute; bottom: -2px; left: 0;
    width: 100%; height: 60px; z-index: 3;
}

/* ====== SECTIONS ====== */
.section { padding: 5rem 2rem; position: relative; }
.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-en {
    font-size: 0.72rem; letter-spacing: 0.3em; text-transform: uppercase;
    color: var(--ocean-light); font-weight: 700; margin-bottom: 0.6rem;
}
.section-title {
    font-family: 'Shippori Mincho', serif;
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    font-weight: 700; color: var(--text-dark);
    position: relative; display: inline-block;
}
.section-title::after {
    content: '';
    position: absolute; bottom: -12px;
    left: 50%; transform: translateX(-50%);
    width: 40px; height: 2px;
    background: linear-gradient(90deg, var(--ocean-light), var(--ocean-bright));
    border-radius: 2px;
}

/* ====== BREADCRUMB ====== */
.breadcrumb {
    padding: 1rem 2rem;
    background: #f8fafb;
    border-bottom: 1px solid #eef2f5;
}
.breadcrumb-inner {
    max-width: 1200px; margin: 0 auto;
    font-size: 0.8rem; color: var(--text-mid);
}
.breadcrumb a { color: var(--ocean-light); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }

/* ====== COMMON CARD ====== */
.glass-card {
    background: white;
    border-radius: 20px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.05);
    padding: 2rem;
    transition: all 0.4s;
}
.glass-card:hover {
    box-shadow: 0 12px 40px rgba(10,147,150,0.1);
    transform: translateY(-4px);
}

/* ====== CTA SECTION ====== */
.cta-banner {
    background: linear-gradient(135deg, var(--ocean-deep), var(--ocean-mid));
    color: white; padding: 4rem 2rem;
    text-align: center; position: relative; overflow: hidden;
}
.cta-banner::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(ellipse at 50% 50%, rgba(0,180,216,0.15), transparent 70%);
}

/* ====== BUTTONS ====== */
.btn-primary {
    padding: 0.85rem 2rem;
    background: white; color: var(--ocean-deep);
    border-radius: 60px; font-weight: 700;
    text-decoration: none;
    display: inline-flex; align-items: center; gap: 0.5rem;
    transition: all 0.4s; box-shadow: 0 4px 16px rgba(0,0,0,0.1);
    font-size: 0.9rem; border: none; cursor: pointer;
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}
.btn-teal {
    padding: 0.85rem 2rem;
    background: var(--ocean-light); color: white;
    border-radius: 60px; font-weight: 700;
    text-decoration: none;
    display: inline-flex; align-items: center; gap: 0.5rem;
    transition: all 0.4s; box-shadow: 0 4px 16px rgba(10,147,150,0.25);
    font-size: 0.9rem; border: none; cursor: pointer;
}
.btn-teal:hover {
    background: var(--ocean-mid);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(10,147,150,0.3);
}
.btn-outline-teal {
    padding: 0.8rem 2rem;
    background: transparent; color: var(--ocean-light);
    border: 2px solid var(--ocean-light);
    border-radius: 60px; font-weight: 700;
    text-decoration: none;
    display: inline-flex; align-items: center; gap: 0.5rem;
    transition: all 0.4s; font-size: 0.9rem; cursor: pointer;
}
.btn-outline-teal:hover {
    background: var(--ocean-light); color: white;
    transform: translateY(-3px);
}

/* ====== FAQ ====== */
.faq-item {
    border: 1px solid #e8ecf1;
    border-radius: 16px;
    margin-bottom: 0.8rem;
    overflow: hidden;
    transition: all 0.3s;
}
.faq-item:hover { border-color: var(--ocean-pale); }
.faq-question {
    padding: 1.2rem 1.5rem;
    cursor: pointer;
    display: flex; align-items: center; justify-content: space-between;
    font-weight: 700; font-size: 0.95rem;
    background: white;
}
.faq-question .q-mark {
    color: var(--ocean-light); font-weight: 900;
    margin-right: 0.8rem; font-size: 1.1rem;
}
.faq-answer {
    padding: 0 1.5rem 1.2rem;
    color: var(--text-mid); font-size: 0.9rem;
    line-height: 1.9;
    display: none;
    border-top: 1px solid #f0f3f5;
    padding-top: 1rem;
}
.faq-item.open .faq-answer { display: block; }
.faq-item.open .faq-chevron { transform: rotate(180deg); }
.faq-chevron { transition: transform 0.3s; color: var(--ocean-light); }

/* ====== SCROLL REVEAL ====== */
.reveal {
    opacity: 0; transform: translateY(30px);
    transition: all 0.7s cubic-bezier(0.4,0,0.2,1);
}
.reveal.active { opacity: 1; transform: translateY(0); }

/* ====== SCROLLBAR ====== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #f8fafc; }
::-webkit-scrollbar-thumb { background: linear-gradient(180deg, var(--ocean-light), var(--ocean-bright)); border-radius: 3px; }