:root {
    --ss-navy: #082b52;
    --ss-navy-soft: #123c66;
    --ss-teal: #008b8b;
    --ss-teal-dark: #007070;
    --ss-teal-soft: #e8f6f5;
    --ss-bg: #f5f8f8;
    --ss-card: #ffffff;
    --ss-border: #d9e4e7;
    --ss-text: #17324d;
    --ss-muted: #5f7285;
    --ss-shadow: 0 12px 30px rgba(8, 43, 82, 0.08);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--ss-bg); color: var(--ss-text); font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif; line-height: 1.6; }
a { color: var(--ss-teal-dark); }
a:focus-visible, button:focus-visible { outline: 3px solid rgba(0, 139, 139, 0.3); outline-offset: 3px; }
.container { width: min(100% - 2.5rem, 1000px); max-width: none; margin-inline: auto; }
.narrow { width: min(100% - 2.5rem, 760px); }

.site-header { position: sticky; top: 0; z-index: 20; background: rgba(255, 255, 255, 0.96); border-bottom: 1px solid var(--ss-border); backdrop-filter: blur(12px); }
.site-nav { min-height: 72px; padding: 0.75rem 0; }
.brand, .site-nav .navbar-brand { color: var(--ss-navy); font-size: 1.35rem; font-weight: 850; letter-spacing: -0.03em; }
.brand:hover, .brand:focus { color: var(--ss-teal-dark); }
.site-nav .nav-link { border-radius: 0.45rem; color: var(--ss-navy-soft); font-weight: 700; padding: 0.55rem 0.7rem; }
.site-nav .nav-link:hover, .site-nav .nav-link:focus { background: var(--ss-teal-soft); color: var(--ss-teal-dark); }
.navbar-toggler { border-color: var(--ss-border); }

h1, h2, h3 { color: var(--ss-navy); font-weight: 800; letter-spacing: -0.03em; }
h1 { font-size: clamp(2.2rem, 5vw, 4rem); line-height: 1.06; }
h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); line-height: 1.15; }
h3 { font-size: 1.2rem; }

.button-row { display: flex; flex-wrap: wrap; gap: 0.8rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; border: 1px solid transparent; border-radius: 0.45rem; padding: 0.75rem 1.15rem; font-weight: 800; text-decoration: none; transition: transform 0.15s ease, background-color 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease; }
.button:hover { transform: translateY(-1px); }
.button-primary { background: var(--ss-teal); color: #fff; box-shadow: 0 8px 18px rgba(0, 139, 139, 0.24); }
.button-primary:hover { background: var(--ss-teal-dark); color: #fff; }
.button-secondary { background: #fff; border-color: var(--ss-border); color: var(--ss-navy); }
.button-secondary:hover { border-color: var(--ss-teal); color: var(--ss-teal-dark); }

.section-band, .page-hero { background: linear-gradient(180deg, #fff 0%, var(--ss-bg) 100%); }
.hero { border-bottom: 1px solid var(--ss-border); padding: 4.75rem 0; }
.hero-grid, .download-grid { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(400px, 1.1fr); gap: 3rem; align-items: center; }
.hero h1 { margin: 0 0 1.25rem; }
.product-name { color: var(--ss-teal-dark); font-size: 1.05rem; font-weight: 850; margin: 0 0 0.75rem; }
.lead, .section-heading p, .page-hero p, .feature-card p, .notice-card p, .cta-panel p, .prose p, .download-card p, .download-card span { color: var(--ss-muted); }
.lead { font-size: 1.12rem; margin-bottom: 1.6rem; }

.product-mockup, .screenshot-card, .step-screenshot { position: relative; overflow: hidden; margin: 0; background: var(--ss-card); border: 1px solid var(--ss-border); border-radius: 0.75rem; box-shadow: var(--ss-shadow); }
.product-mockup { aspect-ratio: 1386 / 893; padding: 0.45rem; }
.screenshot-card, .step-screenshot { aspect-ratio: 16 / 10; }
.screenshot-placeholder { display: flex; align-items: center; justify-content: center; min-height: 160px; color: var(--ss-muted); text-align: center; }
.screenshot-placeholder > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; background: var(--ss-card); }
.clickable-screenshot { cursor: zoom-in; transition: transform 0.18s ease, filter 0.18s ease; }
.clickable-screenshot:hover { transform: scale(1.012); filter: brightness(0.92); }
.clickable-screenshot:focus-visible { outline: 4px solid var(--ss-teal); outline-offset: -4px; }
.screenshot-placeholder::after { content: "Click to enlarge"; position: absolute; right: 0.75rem; bottom: 0.75rem; z-index: 2; padding: 0.35rem 0.6rem; border-radius: 999px; background: rgba(8, 43, 82, 0.9); color: #fff; font-size: 0.76rem; font-weight: 800; pointer-events: none; opacity: 0; transform: translateY(4px); transition: opacity 0.18s ease, transform 0.18s ease; }
.screenshot-placeholder:hover::after,
.screenshot-placeholder:focus-within::after { opacity: 1; transform: translateY(0); }
.lightbox-open { overflow: hidden; }
.screenshot-lightbox { position: fixed; inset: 0; z-index: 1000; display: grid; place-items: center; padding: 1.5rem; background: rgba(4, 19, 35, 0.9); }
.screenshot-lightbox[hidden] { display: none; }
.screenshot-lightbox-panel { position: relative; display: flex; align-items: center; justify-content: center; width: min(96vw, 1500px); height: min(92vh, 1000px); }
.screenshot-lightbox-image { display: block; max-width: 100%; max-height: 100%; width: auto; height: auto; object-fit: contain; border: 1px solid rgba(255, 255, 255, 0.25); border-radius: 0.55rem; background: #fff; box-shadow: 0 24px 70px rgba(0, 0, 0, 0.45); }
.screenshot-lightbox-close { position: absolute; top: 0; right: 0; z-index: 2; display: inline-flex; align-items: center; justify-content: center; width: 2.75rem; height: 2.75rem; border: 1px solid rgba(255, 255, 255, 0.55); border-radius: 999px; background: var(--ss-navy); color: #fff; font-size: 1.8rem; line-height: 1; cursor: pointer; transform: translate(35%, -35%); }
.screenshot-lightbox-close:hover { background: var(--ss-teal-dark); }

.content-section { padding: 4.5rem 0; }
.muted-section { background: var(--ss-teal-soft); border-block: 1px solid var(--ss-border); }
.section-heading { max-width: 720px; margin-bottom: 2rem; }
.section-heading h2, .page-hero h1 { margin-top: 0; }
.feature-grid, .steps, .two-column, .notice-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
.feature-card, .steps li, .notice-card, .download-card, .warning-panel, .prose, .error-card { background: var(--ss-card); border: 1px solid var(--ss-border); border-radius: 0.75rem; box-shadow: var(--ss-shadow); }
.feature-card { padding: 1.4rem; }
.feature-card-visual { padding: 0.75rem 0.75rem 1.4rem; }
.feature-card-visual .screenshot-card { margin-bottom: 1.25rem; }
.feature-card-visual h3, .feature-card-visual p { margin-inline: 0.65rem; }
.feature-card h3, .steps strong { margin-top: 0; }
.steps { list-style: none; margin: 0; padding: 0; }
.steps li { padding: 1.25rem; }
.step-screenshot { margin-bottom: 1.15rem; }
.steps .step-number { display: inline-flex; align-items: center; justify-content: center; width: 2.3rem; height: 2.3rem; margin-right: 0.6rem; border-radius: 999px; background: var(--ss-teal); color: #fff; font-weight: 900; box-shadow: 0 8px 16px rgba(0, 139, 139, 0.22); }
.check-list, .plain-list, .prose ul { color: var(--ss-text); padding-left: 1.25rem; }
.check-list li, .plain-list li, .prose li { margin-bottom: 0.65rem; }
.notice-section { padding-top: 0; }
.notice-card, .warning-panel, .download-card { padding: 1.75rem; }
.disclaimer-card, .warning-panel { background: #fffdf7; border-color: #ead9aa; }

.cta-section { padding: 0 0 4.75rem; }
.cta-panel { display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding: 2rem; border-radius: 0.75rem; background: var(--ss-navy); color: #fff; box-shadow: var(--ss-shadow); }
.cta-panel h2, .cta-panel p { color: #fff; }
.cta-panel h2 { margin-top: 0; }
.cta-panel span { color: #bce3df; font-weight: 700; }

.page-hero { border-bottom: 1px solid var(--ss-border); padding: 4rem 0 3.25rem; }
.page-hero h1 { margin-bottom: 1rem; }
.download-grid { grid-template-columns: minmax(0, 1fr) minmax(280px, 0.55fr); }
.download-card strong { display: block; color: var(--ss-navy); font-size: 2rem; margin-bottom: 0.5rem; }
.download-hero h1 { max-width: 620px; font-size: clamp(2.35rem, 4.5vw, 3.6rem); }
.download-hero .button { margin-top: 0.4rem; }
.download-meta { margin: 0.9rem 0 0; color: var(--ss-muted); font-size: 0.9rem; font-weight: 700; }
.alpha-notice { background: var(--ss-teal-soft); border-color: #bfe2df; border-left: 4px solid var(--ss-teal); }
.alpha-notice h2 { margin: 0 0 0.65rem; font-size: 1.35rem; }
.alpha-notice p { margin: 0; color: var(--ss-text); }
.download-content { padding-top: 2.25rem; }
.download-details-card { padding: 2rem 2.25rem; background: var(--ss-card); border: 1px solid var(--ss-border); border-radius: 0.75rem; box-shadow: var(--ss-shadow); }
.download-details-card > h2 { margin: 0 0 1.5rem; }
.download-details-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; }
.download-details-grid > div { padding: 1.25rem 1.5rem 1.25rem 0; border-top: 1px solid var(--ss-border); }
.download-details-grid > div:nth-child(even) { padding-right: 0; padding-left: 1.5rem; }
.download-details-grid h3 { margin: 0 0 0.35rem; }
.download-details-grid p { margin: 0; color: var(--ss-muted); }
.prose { padding: 2rem; }
.prose h2 { font-size: 1.35rem; margin: 2rem 0 0.6rem; }
.prose h2:first-child { margin-top: 0; }

.legal-container { width: min(100% - 2.5rem, 800px); }
.legal-hero { padding: 2.75rem 0 2rem; }
.legal-hero h1 { font-size: clamp(2.25rem, 5vw, 3.25rem); }
.legal-hero p { max-width: 680px; margin-bottom: 0; font-size: 1.05rem; }
.legal-content { padding: 1.5rem 0 4.5rem; }
.legal-card { padding: 2.25rem 2.5rem; }
.legal-highlight { margin-bottom: 2rem; padding: 1.15rem 1.25rem; background: var(--ss-teal-soft); border: 1px solid #bfe2df; border-left: 4px solid var(--ss-teal); border-radius: 0.55rem; color: var(--ss-navy); }
.legal-highlight strong { display: block; font-size: 1.08rem; }
.legal-highlight p { margin: 0.35rem 0 0; color: var(--ss-text); }

.site-footer { background: var(--ss-navy); color: #dceaf0; padding: 2.25rem 0; }
.footer-grid { display: grid; grid-template-columns: 1fr auto auto; gap: 1.5rem; align-items: center; }
.site-footer strong { color: #fff; }
.site-footer p { margin: 0.25rem 0 0; }
.site-footer a { color: #dceaf0; font-weight: 700; margin-right: 1rem; text-decoration: none; }
.site-footer a:hover { color: #fff; text-decoration: underline; }
.copyright { color: #b9cbd4; text-align: right; }

.error-page { padding: 4rem 1.25rem; }
.error-card { width: min(100%, 760px); margin: 0 auto; padding: 2rem; }
.error-card h1 { margin-top: 0; }
.error-details { margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--ss-border); color: var(--ss-muted); }

.quickstart-page {
    background: linear-gradient(180deg, #ffffff 0%, var(--ss-bg) 100%);
    padding: 2rem 1.25rem 4rem;
    color: var(--ss-text);
}

.quickstart-container {
    width: min(100%, 1000px);
    margin: 0 auto;
}

.quickstart-hero {
    margin-bottom: 1.6rem;
}

    .quickstart-hero h1 {
        margin: 0 0 0.75rem;
        color: var(--ss-navy);
        font-size: clamp(2rem, 4vw, 3rem);
        line-height: 1.08;
        letter-spacing: -0.04em;
        font-weight: 800;
    }

    .quickstart-hero p {
        max-width: 760px;
        margin: 0 0 1.25rem;
        color: var(--ss-muted);
        font-size: 1.05rem;
        line-height: 1.6;
    }

.pdf-button {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    border: 0;
    border-radius: 0.45rem;
    background: var(--ss-teal);
    color: #ffffff;
    padding: 0.85rem 1.15rem;
    font-weight: 800;
    cursor: pointer;
    box-shadow: 0 8px 18px rgba(0, 139, 139, 0.24);
    transition: transform 0.15s ease, background-color 0.15s ease, box-shadow 0.15s ease;
}

    .pdf-button:hover {
        background: var(--ss-teal-dark);
        transform: translateY(-1px);
        box-shadow: 0 10px 22px rgba(0, 139, 139, 0.28);
    }

.pdf-button-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

.guide-card,
.step-card {
    background: var(--ss-card);
    border: 1px solid var(--ss-border);
    border-radius: 0.75rem;
    box-shadow: var(--ss-shadow);
}

.guide-card {
    padding: 1.35rem 1.55rem 1.2rem;
    margin-bottom: 1.5rem;
}

    .guide-card h2 {
        margin: 0 0 0.9rem;
        color: var(--ss-navy);
        font-size: 1.25rem;
        font-weight: 800;
    }

.guide-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 2rem;
}

.guide-link {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 0.75rem;
    padding: 0.78rem 0.2rem;
    color: var(--ss-teal-dark);
    text-decoration: none;
    border-bottom: 1px solid #e6eef0;
    font-weight: 700;
}

    .guide-link:hover {
        color: var(--ss-navy);
    }

.guide-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.9rem;
    height: 1.9rem;
    border-radius: 999px;
    background: var(--ss-teal-soft);
    color: var(--ss-navy);
    font-size: 0.9rem;
    font-weight: 800;
}

.guide-arrow {
    color: var(--ss-navy-soft);
    font-size: 1.8rem;
    line-height: 1;
}

.step-list {
    display: grid;
    gap: 1.35rem;
}

.step-card {
    position: relative;
    display: grid;
    grid-template-columns: 6.5rem 1fr;
    gap: 1rem;
    padding: 2rem 2rem 2rem 2.2rem;
    scroll-margin-top: 6rem;
}

.step-number-badge {
    position: absolute;
    top: 1.35rem;
    left: 1.35rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.3rem;
    height: 2.3rem;
    border-radius: 999px;
    background: var(--ss-teal);
    color: #ffffff;
    font-weight: 900;
    box-shadow: 0 8px 16px rgba(0, 139, 139, 0.25);
}

.step-icon {
    align-self: start;
    justify-self: center;
    margin-top: 3.2rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 4.7rem;
    height: 4.7rem;
    border-radius: 999px;
    background: var(--ss-teal-soft);
    color: var(--ss-teal-dark);
    font-size: 2rem;
    font-weight: 900;
}

    .step-icon.csv-icon {
        font-size: 1rem;
        border-radius: 1rem;
    }

.step-content h2 {
    margin: 0 0 0.65rem;
    color: var(--ss-navy);
    font-size: clamp(1.45rem, 2.5vw, 2rem);
    line-height: 1.15;
    letter-spacing: -0.03em;
    font-weight: 850;
}

.step-content p {
    margin: 0 0 0.8rem;
    color: var(--ss-text);
    line-height: 1.6;
    font-size: 1rem;
}

    .step-content p:last-child {
        margin-bottom: 0;
    }

.step-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-top: 0.2rem;
    color: var(--ss-teal-dark);
    font-weight: 800;
    text-decoration: none;
}

    .step-link::before {
        content: "\2197";
        font-size: 1rem;
    }

    .step-link:hover {
        color: var(--ss-navy);
        text-decoration: underline;
    }

@media (max-width: 760px) {
    .container,
    .narrow {
        width: min(100% - 2rem, 1000px);
    }

    .site-nav .navbar-collapse { padding-top: 0.75rem; }
    .hero, .content-section, .page-hero { padding-block: 3rem; }
    .hero-grid, .download-grid, .feature-grid, .steps, .two-column, .notice-grid, .footer-grid { grid-template-columns: 1fr; }
    .product-mockup { min-height: 0; }
    .cta-panel { align-items: flex-start; flex-direction: column; }
    .copyright { text-align: left; }
    .screenshot-lightbox { padding: 0.75rem; }
    .screenshot-lightbox-panel { width: 96vw; height: 88vh; }
    .screenshot-lightbox-close { top: 0.25rem; right: 0.25rem; transform: none; }
    .download-details-card { padding: 1.5rem 1.25rem; }
    .download-details-grid { grid-template-columns: 1fr; }
    .download-details-grid > div,
    .download-details-grid > div:nth-child(even) { padding: 1rem 0; }
    .legal-container { width: min(100% - 2rem, 800px); }
    .legal-hero { padding-block: 2.25rem 1.5rem; }
    .legal-content { padding-block: 1rem 3rem; }
    .legal-card { padding: 1.5rem 1.25rem; }

    .quickstart-page {
        padding: 1.4rem 1rem 3rem;
    }

    .guide-grid {
        grid-template-columns: 1fr;
    }

    .step-card {
        grid-template-columns: 1fr;
        padding: 4.3rem 1.25rem 1.4rem;
    }

    .step-number-badge {
        top: 1.25rem;
        left: 1.25rem;
    }

    .step-icon {
        justify-self: start;
        margin-top: 0;
        width: 4rem;
        height: 4rem;
        font-size: 1.65rem;
    }
}

@media print {
    .pdf-button,
    .site-header,
    .site-footer {
        display: none !important;
    }

    .quickstart-page {
        background: #ffffff;
        padding: 0;
    }

    .quickstart-container {
        width: 100%;
        max-width: none;
    }

    .guide-card,
    .step-card {
        box-shadow: none;
        break-inside: avoid;
    }

    .step-card {
        margin-bottom: 1rem;
    }
}