:root {
    --bg: #f6f3ee;
    --bg-soft: #fffdf9;
    --ink: #1c1917;
    --ink-soft: #57534e;
    --line: #e7e0d6;
    --navy: #243044;
    --line-green: #06c755;
    --line-green-hover: #05b34c;
    --shadow: 0 10px 30px rgba(36, 48, 68, 0.06);
    --radius: 18px;
    --header-h: 64px;
    --sticky-h: 92px;
    --font: "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", YuGothic, Meiryo, sans-serif;
    --serif: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", YuMincho, serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--font);
    color: var(--ink);
    background:
        radial-gradient(1200px 420px at 10% -10%, rgba(36, 48, 68, 0.05), transparent 55%),
        radial-gradient(800px 300px at 100% 0%, rgba(6, 199, 85, 0.06), transparent 50%),
        var(--bg);
    line-height: 1.85;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}
body.has-sticky { padding-bottom: calc(var(--sticky-h) + env(safe-area-inset-bottom, 0px)); }

img { max-width: 100%; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

.wrap {
    width: min(960px, calc(100% - 40px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    background: rgba(246, 243, 238, 0.88);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(231, 224, 214, 0.8);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: var(--header-h);
}
.logo {
    font-family: var(--serif);
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: 0.04em;
    text-decoration: none;
}
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: var(--navy);
    border: 1px solid var(--line);
    background: var(--bg-soft);
    border-radius: 999px;
    padding: 0.2rem 0.7rem;
}

.hero {
    padding: 2.6rem 0 3.4rem;
}
.hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: center;
}
.eyebrow {
    margin: 0 0 0.8rem;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    color: var(--ink-soft);
}
.hero h1 {
    font-family: var(--serif);
    font-weight: 700;
    font-size: clamp(1.85rem, 6vw, 3rem);
    line-height: 1.4;
    letter-spacing: 0.04em;
    margin: 0 0 1.1rem;
}
.lead {
    margin: 0 0 1.7rem;
    color: var(--ink-soft);
    max-width: 34em;
    font-size: 1rem;
}

.btn-line {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    width: 100%;
    min-height: 64px;
    padding: 0.85rem 1.4rem;
    border-radius: 999px;
    background: var(--line-green);
    color: #fff;
    font-weight: 700;
    font-size: 1.12rem;
    letter-spacing: 0.05em;
    text-decoration: none;
    box-shadow: 0 12px 28px rgba(6, 199, 85, 0.28), 0 2px 0 rgba(0, 0, 0, 0.06);
    transition: transform 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
    position: relative;
}
.btn-line:hover {
    background: var(--line-green-hover);
    transform: translateY(-1px);
    box-shadow: 0 16px 34px rgba(6, 199, 85, 0.34), 0 2px 0 rgba(0, 0, 0, 0.06);
}
.btn-line:active { transform: translateY(0); }
.btn-line:focus-visible { outline: 3px solid rgba(6, 199, 85, 0.45); outline-offset: 3px; }
.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.18);
    flex: 0 0 auto;
}
.btn-label { white-space: nowrap; }
.btn-arrow {
    font-size: 1.6rem;
    line-height: 1;
    margin-left: 0.15rem;
    opacity: 0.85;
    transform: translateY(-1px);
}
.btn-line-center { margin: 0 auto; max-width: 420px; }

.reassure {
    list-style: none;
    margin: 0.95rem 0 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem 1rem;
    font-size: 0.82rem;
    color: var(--ink-soft);
}
.reassure li { display: inline-flex; align-items: center; gap: 0.35rem; }
.reassure li::before {
    content: "";
    width: 0.95rem;
    height: 0.95rem;
    border-radius: 50%;
    background: var(--line-green) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.3l2.5 2.4L12 5.3' fill='none' stroke='%23fff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 0.7rem no-repeat;
    flex: 0 0 auto;
}
.cta-note {
    margin: 0.9rem 0 0;
    color: var(--ink-soft);
    font-size: 0.85rem;
}

.qr-card { display: none; }

.section { padding: 1.2rem 0 3.4rem; }
.section h2 {
    font-family: var(--serif);
    font-size: clamp(1.4rem, 4vw, 1.9rem);
    letter-spacing: 0.06em;
    margin: 0 0 0.6rem;
    text-align: center;
}
.section-lead {
    text-align: center;
    color: var(--ink-soft);
    margin: 0 auto 2rem;
    max-width: 28em;
}

.card-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}
.card {
    background: var(--bg-soft);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.4rem 1.3rem 1.5rem;
    box-shadow: var(--shadow);
}
.card-num {
    display: block;
    font-family: var(--serif);
    color: #8a8176;
    letter-spacing: 0.08em;
    font-size: 0.85rem;
    margin-bottom: 0.45rem;
}
.card h3, .step h3, .final-inner h2 {
    margin: 0 0 0.45rem;
    font-size: 1.08rem;
    letter-spacing: 0.04em;
    line-height: 1.6;
}
.card p, .step p { margin: 0; color: var(--ink-soft); }

.steps {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 1rem;
}
.step {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 1rem;
    align-items: start;
    background: var(--bg-soft);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.2rem 1.2rem 1.3rem;
}
.step-num {
    width: 2.1rem;
    height: 2.1rem;
    border-radius: 50%;
    background: var(--line-green);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.95rem;
    margin-top: 0.15rem;
}

.faq-list { display: grid; gap: 0.75rem; }
.faq-item {
    background: var(--bg-soft);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 0.2rem 1rem 0.2rem;
}
.faq-item summary {
    cursor: pointer;
    font-weight: 600;
    padding: 0.95rem 0;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
    content: "";
    width: 0.55rem;
    height: 0.55rem;
    border-right: 2px solid #8a8176;
    border-bottom: 2px solid #8a8176;
    transform: rotate(45deg);
    flex: 0 0 auto;
    transition: transform 0.15s ease;
    margin-top: -4px;
}
.faq-item[open] summary::after { transform: rotate(225deg); margin-top: 4px; }
.faq-item p {
    margin: 0 0 1rem;
    color: var(--ink-soft);
}

.final-cta { padding-bottom: 4rem; }
.final-inner {
    text-align: center;
    background: var(--navy);
    color: #f8f5f0;
    border-radius: 28px;
    padding: 2.4rem 1.4rem 2.2rem;
    box-shadow: var(--shadow);
}
.final-inner h2 {
    font-family: var(--serif);
    font-size: clamp(1.3rem, 4vw, 1.8rem);
    color: #fff;
    margin-bottom: 0.7rem;
}
.final-inner p {
    margin: 0 auto 1.5rem;
    max-width: 28em;
    color: rgba(248, 245, 240, 0.86);
}
.final-inner .btn-line { box-shadow: 0 12px 28px rgba(0, 0, 0, 0.22); }
.final-inner .reassure { justify-content: center; color: rgba(248, 245, 240, 0.82); }

.site-footer {
    padding: 1.2rem 0 2rem;
    color: var(--ink-soft);
    font-size: 0.85rem;
    text-align: center;
}
.copyright { margin: 0.2rem 0 0; }
.badge-dot { width: 0.45rem; height: 0.45rem; border-radius: 50%; background: var(--line-green); }

.sticky-cta { display: none; }

@media (max-width: 767px) {
    .sticky-cta {
        display: block;
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 50;
        padding: 0.6rem 0.75rem calc(0.6rem + env(safe-area-inset-bottom, 0px));
        background: rgba(255, 253, 249, 0.95);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-top: 1px solid var(--line);
        box-shadow: 0 -8px 24px rgba(36, 48, 68, 0.08);
    }
    .btn-line-sticky {
        min-height: 56px;
        font-size: 1.02rem;
        padding: 0.6rem 1rem;
        box-shadow: 0 8px 20px rgba(6, 199, 85, 0.28);
    }
    .btn-line-sticky .btn-icon { width: 34px; height: 34px; }
    .btn-line-xl .btn-label, .btn-line-sticky .btn-label { white-space: normal; text-align: center; }
}

@media (min-width: 768px) {
    body.has-sticky { padding-bottom: 0; }
    .hero { padding: 4.6rem 0 5rem; }
    .hero-grid { grid-template-columns: minmax(0, 1fr) 280px; gap: 3.5rem; }
    .hero-grid-single { grid-template-columns: 1fr; }
    .btn-line-xl { width: auto; display: inline-flex; min-width: 380px; min-height: 70px; font-size: 1.2rem; padding: 0.9rem 2rem 0.9rem 1.2rem; }
    .btn-line-center { display: flex; width: 100%; max-width: 420px; min-width: 0; }
    .card-grid { grid-template-columns: repeat(3, 1fr); }
    .steps { grid-template-columns: repeat(3, 1fr); }
    .step { grid-template-columns: 1fr; gap: 0.7rem; }
    .final-inner { padding: 3.2rem 2.5rem 3rem; }
    .qr-card {
        display: block;
        background: var(--bg-soft);
        border: 1px solid var(--line);
        border-radius: 24px;
        padding: 1.5rem 1.4rem 1.4rem;
        box-shadow: var(--shadow);
        text-align: center;
    }
    .qr-box {
        width: 176px;
        height: 176px;
        margin: 0 auto 1rem;
        padding: 12px;
        background: #fff;
        border-radius: 14px;
        border: 1px solid var(--line);
    }
    .qr-box svg { display: block; width: 100%; height: 100%; }
    .qr-title { margin: 0 0 0.3rem; font-weight: 700; font-size: 0.95rem; letter-spacing: 0.04em; }
    .qr-text { margin: 0; font-size: 0.8rem; color: var(--ink-soft); line-height: 1.7; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .btn-line { transition: none; }
}