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

:root {
    --bg: #FAFAF8;
    --bg2: #F3F2EE;
    --ink: #1A1A18;
    --ink-muted: #6B6B65;
    --accent: #D93B2B;
    --accent-light: #FAE8E6;
    --border: #E4E3DC;
    --white: #FFFFFF;
    --serif: 'Playfair Display', Georgia, serif;
    --sans: 'DM Sans', sans-serif;
    --radius: 12px;
}

body {
    font-family: var(--sans);
    background: var(--bg);
    color: var(--ink);
    font-size: 16px;
    line-height: 1.7;
}

/* ── NAV ── */
nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(250, 250, 248, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 0 5vw;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-logo {
    font-family: var(--serif);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--ink);
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    background: none;
    border: none;
}

.nav-logo-dot {
    display: inline-block;
    width: 28px;
    height: 28px;
    background: var(--accent);
    border-radius: 6px;
    flex-shrink: 0;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    list-style: none;
}

.nav-links button {
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--sans);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--ink-muted);
    transition: color 0.2s;
    padding: 0;
}

.nav-links button:hover {
    color: var(--accent);
}

.nav-links button.active {
    color: var(--accent);
    font-weight: 600;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--ink);
    border-radius: 2px;
}

/* ── HERO ── */
#hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 60px;
    padding: 80px 10vw 70px;
    transition: opacity 0.25s ease;
}

#hero.hidden {
    display: none;
}

.hero-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    background: var(--accent-light);
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 20px;
}

.hero-title {
    font-family: var(--serif);
    font-size: clamp(2.4rem, 5vw, 4rem);
    line-height: 1.15;
    font-weight: 700;
    margin-bottom: 20px;
}

.hero-title em {
    font-style: italic;
    color: var(--accent);
}

.hero-sub {
    font-size: 1.05rem;
    color: var(--ink-muted);
    font-weight: 300;
    margin-bottom: 36px;
    max-width: 440px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--ink);
    color: var(--white);
    text-decoration: none;
    padding: 13px 26px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.95rem;
    transition: background 0.2s, transform 0.15s;
}

.btn-primary:hover {
    background: #333;
    transform: translateY(-1px);
}

.hero-hint {
    font-size: 0.8rem;
    color: var(--ink-muted);
    margin-top: 12px;
}

/* QR Card */
.qr-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 36px;
    text-align: center;
    box-shadow: 0 6px 32px rgba(0, 0, 0, 0.06);
    position: relative;
    overflow: hidden;
}

.qr-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--accent);
}

.qr-label {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-muted);
    margin-bottom: 18px;
}

.qr-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 14px 0;
    color: var(--ink-muted);
    font-size: 0.8rem;
}

.qr-divider::before,
.qr-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

.playstore-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--ink);
    color: var(--white);
    text-decoration: none;
    padding: 11px 20px;
    border-radius: 10px;
    font-size: 0.875rem;
    font-weight: 500;
    transition: background 0.2s;
    width: 100%;
    justify-content: center;
}

.playstore-btn:hover {
    background: #333;
}

/* ── SECTION PANEL ── */
#section-panel {
    display: none;
    animation: fadeIn 0.3s ease;
    min-height: calc(100vh - 64px);
}

#section-panel.visible {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-content {
    display: none;
}

.section-content.active {
    display: block;
}

.inner-wrap {
    padding: 64px 10vw 80px;
}

.inner-wrap-alt {
    padding: 64px 10vw 80px;
    background: var(--bg2);
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--ink-muted);
    margin-bottom: 32px;
}

.breadcrumb button {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--accent);
    font-family: var(--sans);
    font-size: 0.82rem;
    padding: 0;
    transition: opacity 0.2s;
}

.breadcrumb button:hover {
    opacity: 0.7;
}

.breadcrumb span {
    color: var(--border);
}

.section-eyebrow {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 10px;
}

.section-title {
    font-family: var(--serif);
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    line-height: 1.2;
    margin-bottom: 6px;
}

/* ── ABOUT ── */
.about-intro {
    max-width: 800px;
    color: var(--ink-muted);
    font-size: 1.02rem;
    margin-bottom: 52px;
}

.about-intro p {
    margin-bottom: 14px;
}

.about-intro strong {
    color: var(--ink);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 52px;
}

.feature-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 26px 22px;
    transition: box-shadow 0.2s, transform 0.2s;
}

.feature-card:hover {
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.07);
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 1.7rem;
    margin-bottom: 10px;
}

.feature-title {
    font-family: var(--serif);
    font-size: 1rem;
    margin-bottom: 8px;
    color: var(--ink);
}

.feature-desc {
    font-size: 0.87rem;
    color: var(--ink-muted);
    line-height: 1.6;
}

.categories-block {
    margin-bottom: 52px;
}

.categories-block h3 {
    font-family: var(--serif);
    font-size: 1.4rem;
    margin-bottom: 18px;
}

.categories-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.cat-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 6px 16px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--ink);
}

.why-block h3 {
    font-family: var(--serif);
    font-size: 1.4rem;
    margin-bottom: 18px;
}

.why-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 600px;
}

.why-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 13px 16px;
}

.why-check {
    width: 20px;
    height: 20px;
    min-width: 20px;
    background: var(--accent-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 2px;
}

.why-check svg {
    width: 11px;
    height: 11px;
    color: var(--accent);
}

.why-item span {
    font-size: 0.92rem;
    color: var(--ink-muted);
}

.why-item span strong {
    color: var(--ink);
}

/* ── POLICY ── */
.policy-wrap {
    max-width: 780px;
}

.policy-effective {
    display: inline-block;
    font-size: 0.8rem;
    color: var(--ink-muted);
    background: var(--white);
    padding: 5px 14px;
    border-radius: 20px;
    margin-bottom: 28px;
    border: 1px solid var(--border);
    font-weight: 500;
}

.policy-intro {
    font-size: 1rem;
    color: var(--ink-muted);
    margin-bottom: 40px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border);
}

.policy-intro strong {
    color: var(--ink);
}

.policy-section {
    margin-bottom: 40px;
    padding-bottom: 36px;
    border-bottom: 1px solid var(--border);
}

.policy-section:last-child {
    border-bottom: none;
}

.policy-section-title {
    font-family: var(--serif);
    font-size: 1.35rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--ink);
}

.policy-block {
    margin-bottom: 22px;
}

.policy-block h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 8px;
}

.policy-block p {
    font-size: 0.95rem;
    color: var(--ink-muted);
    margin-bottom: 8px;
}

.policy-block ul {
    padding-left: 20px;
}

.policy-block ul li {
    font-size: 0.95rem;
    color: var(--ink-muted);
    margin-bottom: 5px;
}

.policy-block strong {
    color: var(--ink);
}

.policy-highlight {
    background: var(--accent-light);
    border-left: 3px solid var(--accent);
    border-radius: 0 8px 8px 0;
    padding: 14px 18px;
    font-size: 0.9rem;
    color: var(--ink-muted);
    margin-bottom: 12px;
}

.policy-highlight strong {
    color: var(--accent);
}

/* CONTACT */
.contact-info-only {
    max-width: 560px;
}

.contact-info-only>p {
    color: var(--ink-muted);
    margin-bottom: 36px;
    font-size: 1.02rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 20px;
}

.contact-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    background: var(--accent-light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-icon svg {
    width: 20px;
    height: 20px;
    color: var(--accent);
}

.contact-item-text strong {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 3px;
}

.contact-item-text a,
.contact-item-text span {
    color: var(--ink-muted);
    font-size: 0.95rem;
    text-decoration: none;
}

.contact-item-text a:hover {
    color: var(--accent);
}

.contact-developer {
    margin-top: 40px;
    padding: 26px 28px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 16px;
    display: flex;
    align-items: center;
    gap: 18px;
}

.dev-avatar {
    width: 50px;
    height: 50px;
    min-width: 50px;
    background: var(--ink);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--serif);
    font-size: 1.25rem;
    color: var(--white);
    font-weight: 700;
}

.dev-info strong {
    display: block;
    font-size: 1rem;
    margin-bottom: 2px;
}

.dev-info span {
    font-size: 0.85rem;
    color: var(--ink-muted);
}

.dev-info a {
    color: var(--accent);
    text-decoration: none;
}

.dev-info a:hover {
    text-decoration: underline;
}

/* FOOTER */
footer {
    background: var(--ink);
    color: rgba(255, 255, 255, 0.55);
    padding: 40px 10vw;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-brand {
    font-family: var(--serif);
    color: var(--white);
    font-size: 1.3rem;
    font-weight: 700;
}

.footer-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    list-style: none;
}

.footer-links button {
    background: none;
    border: none;
    cursor: pointer;
    color: rgba(255, 255, 255, 0.5);
    font-family: var(--sans);
    font-size: 0.85rem;
    transition: color 0.2s;
}

.footer-links button:hover {
    color: var(--white);
}

.footer-copy {
    font-size: 0.8rem;
    width: 100%;
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* RESPONSIVE */
@media (max-width: 1000px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    #hero {
        grid-template-columns: 1fr;
        padding: 60px 6vw 48px;
        gap: 40px;
    }

    .inner-wrap,
    .inner-wrap-alt {
        padding: 48px 6vw 64px;
    }

    nav {
        padding: 0 6vw;
    }
}

@media (max-width: 640px) {
    .features-grid {
        grid-template-columns: 1fr;
    }

    .nav-links {
        display: none;
    }

    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--bg);
        border-bottom: 1px solid var(--border);
        padding: 16px 6vw;
        gap: 16px;
        z-index: 99;
    }

    .hamburger {
        display: flex;
    }
}