:root {
    --dark-bg: #07111F;
    --dark-line: rgba(255,255,255,0.09);
    --text-main: #F6F9FF;
    --text-sub: #B3C0D4;
    --text-soft: #7F8DA4;
    --blue: #4C8DFF;
    --mint: #39E2C4;
    --warning: #FDBA4A;
    --radius-xl: 30px;
    --radius-lg: 22px;
    --max-width: 1100px;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    font-family: "Segoe UI", Arial, "Malgun Gothic", "Meiryo", sans-serif;
    background: var(--dark-bg);
    color: var(--text-main);
}

body {
    min-height: 100vh;
    background: radial-gradient(circle at 14% 8%, rgba(76,141,255,0.18), transparent 26%), radial-gradient(circle at 86% 14%, rgba(57,226,196,0.14), transparent 24%), linear-gradient(180deg, #07111F 0%, #081321 42%, #09101A 100%);
}

a {
    color: inherit;
    text-decoration: none;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(7,17,31,0.80);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.topbar-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 16px 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 13px;
}

.brand-logo {
    width: 44px;
    height: 44px;
    border-radius: 15px;
    background: linear-gradient(135deg, var(--mint), var(--blue));
    color: #07111F;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 23px;
    font-weight: 900;
    box-shadow: 0 12px 28px rgba(57,226,196,0.22);
}

.brand-name {
    display: block;
    font-size: 20px;
    font-weight: 900;
}

.brand-sub {
    display: block;
    margin-top: 3px;
    font-size: 12px;
    color: var(--text-sub);
}

.top-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.nav-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 0 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 800;
    border: 1px solid rgba(255,255,255,0.10);
    background: rgba(255,255,255,0.04);
    color: var(--text-main);
}

    .nav-btn.primary {
        background: linear-gradient(135deg, var(--mint), var(--blue));
        color: #07111F;
        border: none;
    }

.lang-box {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    padding: 4px;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,0.09);
    background: rgba(255,255,255,0.03);
}

.lang-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 7px 10px;
    border-radius: 999px;
    color: var(--text-sub);
    font-size: 12px;
    font-weight: 700;
    border: 1px solid transparent;
}

    .lang-link:hover,
    .lang-link.active {
        color: var(--text-main);
        background: rgba(255,255,255,0.06);
        border-color: rgba(255,255,255,0.10);
    }

.page {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 28px 20px 48px 20px;
}

.hero {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-xl);
    border: 1px solid var(--dark-line);
    background: linear-gradient(180deg, rgba(255,255,255,0.025), rgba(255,255,255,0.01)), linear-gradient(135deg, rgba(12,22,38,0.98), rgba(10,18,32,0.96));
    box-shadow: 0 30px 80px rgba(0,0,0,0.42);
    padding: 40px;
}

    .hero:before {
        content: "";
        position: absolute;
        width: 320px;
        height: 320px;
        right: -100px;
        top: -90px;
        border-radius: 50%;
        background: radial-gradient(circle, rgba(76,141,255,0.22), transparent 68%);
    }

.hero-content {
    position: relative;
    z-index: 1;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 14px;
    border-radius: 999px;
    background: rgba(76,141,255,0.09);
    border: 1px solid rgba(76,141,255,0.22);
    color: #9FC2FF;
    font-size: 13px;
    font-weight: 850;
    margin-bottom: 18px;
}

.eyebrow-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--blue);
    box-shadow: 0 0 14px var(--blue);
}

.hero h1 {
    margin: 0;
    font-size: 42px;
    line-height: 1.15;
    letter-spacing: -1.4px;
    font-weight: 950;
}

.hero p {
    margin: 18px 0 0 0;
    max-width: 850px;
    color: var(--text-sub);
    font-size: 16px;
    line-height: 1.85;
}

.hero-actions {
    margin-top: 26px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 22px;
    border-radius: 14px;
    font-size: 14px;
    font-weight: 900;
    border: 1px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--mint), var(--blue));
    color: #07111F;
    box-shadow: 0 16px 34px rgba(57,226,196,0.18);
}

.btn-secondary {
    background: rgba(255,255,255,0.045);
    color: var(--text-main);
    border-color: rgba(255,255,255,0.11);
}

.section {
    margin-top: 22px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--dark-line);
    background: rgba(11,23,40,0.82);
    box-shadow: 0 18px 40px rgba(0,0,0,0.28);
    padding: 30px;
}

    .section h2 {
        margin: 0 0 18px 0;
        font-size: 28px;
        line-height: 1.3;
        letter-spacing: -0.7px;
    }

.steps {
    display: grid;
    gap: 16px;
}

.step {
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 14px;
    padding: 18px;
    border-radius: 18px;
    background: linear-gradient(180deg, rgba(255,255,255,0.032), rgba(255,255,255,0.015));
    border: 1px solid rgba(255,255,255,0.08);
}

.step-no {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: rgba(76,141,255,0.10);
    border: 1px solid rgba(76,141,255,0.18);
    color: #A7C7FF;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 900;
}

.step-title {
    margin: 0;
    font-size: 17px;
    font-weight: 900;
    color: var(--text-main);
}

.step-desc {
    margin: 7px 0 0 0;
    color: var(--text-sub);
    font-size: 14px;
    line-height: 1.75;
}

.step-link {
    margin-top: 12px;
}

    .step-link a {
        display: inline-flex;
        min-height: 36px;
        padding: 0 13px;
        border-radius: 999px;
        align-items: center;
        justify-content: center;
        background: rgba(76,141,255,0.10);
        border: 1px solid rgba(76,141,255,0.20);
        color: #A7C7FF;
        font-size: 13px;
        font-weight: 800;
    }

.guide-image {
    margin-top: 14px;
    border-radius: 18px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.10);
    background: rgba(255,255,255,0.035);
}

    .guide-image img {
        display: block;
        width: 100%;
        max-height: 520px;
        object-fit: contain;
        background: #fff;
    }

    .guide-image.missing {
        min-height: 160px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

        .guide-image.missing:after {
            content: "Guide image is not uploaded yet.";
            color: #B3C0D4;
            font-size: 14px;
        }

.check-list {
    display: grid;
    gap: 12px;
}

.check-item {
    padding: 15px 16px;
    border-radius: 16px;
    background: rgba(255,255,255,0.035);
    border: 1px solid rgba(255,255,255,0.08);
    color: #B3C0D4;
    line-height: 1.7;
    font-size: 14px;
}

.notice {
    margin-top: 18px;
    padding: 18px;
    border-radius: 18px;
    border: 1px solid rgba(253,186,74,0.22);
    background: rgba(253,186,74,0.08);
    color: #FFE2A8;
    font-size: 14px;
    line-height: 1.7;
}

.grid-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}

.link-card {
    display: block;
    padding: 18px;
    border-radius: 18px;
    background: linear-gradient(180deg, rgba(255,255,255,0.032), rgba(255,255,255,0.015));
    border: 1px solid rgba(255,255,255,0.08);
}

    .link-card strong {
        display: block;
        font-size: 16px;
        margin-bottom: 8px;
    }

    .link-card span {
        display: block;
        color: var(--text-sub);
        font-size: 13px;
        line-height: 1.6;
    }

.footer {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 26px 20px 36px 20px;
    color: var(--text-soft);
    font-size: 13px;
    display: flex;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

@media (max-width: 760px) {
    .topbar-inner {
        align-items: flex-start;
        flex-direction: column;
    }

    .top-actions {
        justify-content: flex-start;
    }

    .page {
        padding: 16px 14px 34px 14px;
    }

    .hero {
        padding: 28px 20px;
    }

        .hero h1 {
            font-size: 32px;
        }

    .hero-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .section {
        padding: 22px 18px;
    }

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

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