:root {
    --bg: #0b1020;
    --bg-soft: #131a2e;
    --card: rgba(255, 255, 255, 0.06);
    --card-strong: rgba(255, 255, 255, 0.08);
    --text: #f5f7ff;
    --muted: #b8c1d9;
    --line: rgba(255, 255, 255, 0.12);
    --accent: #7c9cff;
    --accent-strong: #5f85ff;
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
    --radius: 24px;
    --radius-sm: 16px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(124, 156, 255, 0.18), transparent 28%),
        radial-gradient(circle at top right, rgba(0, 209, 178, 0.12), transparent 22%),
        linear-gradient(180deg, #0a0f1d 0%, #0f1424 45%, #0b1020 100%);
    font-family:
        "Inter",
        "Hiragino Sans",
        "Yu Gothic UI",
        "Meiryo",
        sans-serif;
    line-height: 1.7;
}

a {
    text-decoration: none;
}

img {
    display: block;
    width: 100%;
}

.site-navbar {
    background: rgba(8, 12, 24, 0.72);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.brand-mark {
    font-weight: 800;
    letter-spacing: 0.06em;
    color: #ffffff !important;
}

.navbar .nav-link {
    color: rgba(255, 255, 255, 0.78) !important;
    font-weight: 500;
    margin-left: 0.5rem;
    transition: color 0.2s ease;
}

.navbar .nav-link:hover {
    color: #ffffff !important;
}

.nav-x-link i {
    font-size: 1.25rem;
    vertical-align: middle;
}

.hero-section {
    padding: 150px 0 90px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 28px;
    align-items: stretch;
}

.hero-copy,
.hero-card,
.info-card,
.work-card,
.skill-card,
.cta-box {
    border: 1px solid var(--line);
    background: var(--card);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
}

.hero-copy {
    border-radius: 32px;
    padding: 42px;
}

.eyebrow,
.section-kicker,
.hero-card-label {
    display: inline-block;
    margin-bottom: 14px;
    color: #9db1ff;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.hero-copy h1 {
    margin: 0 0 18px;
    font-size: clamp(2.2rem, 4vw, 4.2rem);
    line-height: 1.15;
    font-weight: 800;
}

.hero-lead {
    color: var(--muted);
    font-size: 1.05rem;
    max-width: 60ch;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 28px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 20px;
    border-radius: 999px;
    font-weight: 700;
    transition: transform 0.2s ease, opacity 0.2s ease, background 0.2s ease;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-main {
    background: linear-gradient(135deg, var(--accent), var(--accent-strong));
    color: white;
    border: none;
}

.btn-sub {
    background: transparent;
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.hero-points {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-top: 34px;
}

.hero-point {
    padding: 18px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-point-label {
    display: block;
    color: var(--muted);
    font-size: 0.82rem;
    margin-bottom: 6px;
}

.hero-point strong {
    font-size: 0.96rem;
}

.hero-panel {
    height: 100%;
}

.hero-card {
    height: 100%;
    border-radius: 32px;
    padding: 34px;
}

.hero-card h2 {
    font-size: 1.8rem;
    line-height: 1.3;
    margin-bottom: 14px;
}

.hero-card p,
.hero-list li {
    color: var(--muted);
}

.hero-list {
    margin: 18px 0 0;
    padding-left: 1.1rem;
}

.section-block {
    padding: 90px 0;
}

.top-apps-section {
    padding-top: 140px;
}

.section-dark {
    background: rgba(255, 255, 255, 0.02);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.section-heading {
    max-width: 760px;
    margin-bottom: 36px;
}

.section-heading.center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.section-heading h2 {
    font-size: clamp(1.8rem, 3vw, 2.8rem);
    margin-bottom: 12px;
    font-weight: 800;
}

.section-heading p {
    color: var(--muted);
    margin: 0;
}

.app-site-title {
    font-size: clamp(2.3rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: 12px;
}

.store-tabs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin: 0 auto 34px;
}

.store-tab {
    min-width: 110px;
    min-height: 44px;
    padding: 0 18px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--muted);
    font-weight: 800;
    transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.store-tab:hover {
    transform: translateY(-2px);
    color: #fff;
}

.store-tab.is-active {
    background: linear-gradient(135deg, var(--accent), var(--accent-strong));
    color: #fff;
    border-color: transparent;
}

.tab-panel[hidden] {
    display: none;
}

.archive-link {
    margin: 10px 0 0;
    text-align: right;
}

.archive-link a {
    color: #c8d6ff;
    font-weight: 700;
}

.archive-list {
    display: grid;
    gap: 12px;
    max-width: 720px;
    margin: 0 auto;
}

.archive-item {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 18px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: var(--card);
    color: var(--text);
}

.archive-item span {
    color: var(--muted);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.info-card {
    border-radius: var(--radius);
    padding: 28px;
}

.info-icon {
    display: inline-flex;
    width: 52px;
    height: 52px;
    border-radius: 14px;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(124, 156, 255, 0.25), rgba(124, 156, 255, 0.08));
    border: 1px solid rgba(124, 156, 255, 0.24);
    margin-bottom: 18px;
}

.info-icon i {
    font-size: 1.5rem;
}

.info-card h3 {
    margin-bottom: 12px;
    font-size: 1.2rem;
}

.info-card p {
    margin: 0;
    color: var(--muted);
}

.work-card {
    border-radius: 24px;
    overflow: hidden;
    height: 100%;
}

.work-thumb-link {
    overflow: hidden;
    display: block;
}

.work-thumb {
    aspect-ratio: 16 / 10;
    object-fit: cover;
    transition: transform 0.35s ease;
}

.work-card:hover .work-thumb {
    transform: scale(1.04);
}

.works-subheading {
    margin: 0 0 18px;
}

.works-subheading h3 {
    margin: 0;
    font-size: 1.45rem;
    font-weight: 800;
}

.work-placeholder {
    min-height: 212px;
    aspect-ratio: 16 / 10;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    color: #fff;
    text-align: center;
    background:
        linear-gradient(135deg, rgba(124, 156, 255, 0.22), rgba(0, 209, 178, 0.18)),
        rgba(255, 255, 255, 0.05);
    transition: transform 0.35s ease, filter 0.35s ease;
}

.work-placeholder span {
    max-width: 11ch;
    font-size: clamp(1.45rem, 3vw, 2.2rem);
    line-height: 1.08;
    font-weight: 800;
}

.work-card:hover .work-placeholder {
    transform: scale(1.04);
    filter: saturate(1.08);
}

.para-theme {
    background:
        linear-gradient(135deg, rgba(255, 170, 80, 0.3), rgba(124, 156, 255, 0.28)),
        linear-gradient(45deg, #17203a, #12182b);
}

.note-theme {
    background:
        linear-gradient(135deg, rgba(0, 209, 178, 0.24), rgba(255, 255, 255, 0.08)),
        linear-gradient(45deg, #102521, #111827);
}

.timebox-theme {
    background:
        linear-gradient(135deg, rgba(124, 156, 255, 0.34), rgba(76, 201, 240, 0.22)),
        linear-gradient(45deg, #111936, #0d1326);
}

.matrix-theme {
    background:
        linear-gradient(180deg, rgba(0, 255, 153, 0.28), rgba(0, 0, 0, 0.08)),
        linear-gradient(45deg, #05140e, #10251a);
}

.shorts-theme {
    background:
        linear-gradient(135deg, rgba(255, 64, 96, 0.32), rgba(255, 255, 255, 0.08)),
        linear-gradient(45deg, #281018, #111827);
}

.nekotower-theme {
    background:
        linear-gradient(135deg, rgba(255, 206, 115, 0.32), rgba(0, 209, 178, 0.18)),
        linear-gradient(45deg, #241b12, #102521);
}

.matrix-simulator-theme {
    background:
        linear-gradient(180deg, rgba(0, 255, 153, 0.34), rgba(124, 156, 255, 0.12)),
        linear-gradient(45deg, #03110b, #101827);
}

.goodslocker-theme {
    background:
        linear-gradient(135deg, rgba(124, 156, 255, 0.28), rgba(255, 206, 115, 0.2)),
        linear-gradient(45deg, #171b2d, #242015);
}

.work-body {
    padding: 22px 22px 24px;
}

.work-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 14px;
}

.work-badge,
.work-stack {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 0 12px;
    border-radius: 999px;
    font-size: 0.8rem;
}

.work-badge {
    background: rgba(124, 156, 255, 0.14);
    border: 1px solid rgba(124, 156, 255, 0.2);
    color: #dce5ff;
}

.work-stack {
    background: rgba(255, 255, 255, 0.05);
    color: var(--muted);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.work-body h3 {
    font-size: 1.25rem;
    margin-bottom: 10px;
}

.work-body p {
    color: var(--muted);
    margin-bottom: 16px;
}

.work-links {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.work-links a {
    color: #c8d6ff;
    font-weight: 700;
}

.work-links a:hover {
    color: #ffffff;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.skill-card {
    border-radius: 22px;
    padding: 28px 20px;
    text-align: center;
}

.skill-card i {
    display: inline-block;
    font-size: 2.3rem;
    margin-bottom: 14px;
    color: #dfe6ff;
}

.skill-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.skill-card p {
    color: var(--muted);
    margin: 0;
}

.cta-section {
    padding-top: 0;
}

.cta-box {
    border-radius: 28px;
    padding: 34px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
}

.cta-box h2 {
    margin-bottom: 10px;
    font-size: 1.8rem;
}

.cta-box p {
    color: var(--muted);
    margin: 0;
}

.cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.site-footer {
    border-top: 1px solid var(--line);
    padding: 28px 0 36px;
    background: rgba(255, 255, 255, 0.02);
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.footer-brand {
    color: #fff;
    font-size: 1.1rem;
    font-weight: 800;
}

.footer-copy {
    color: var(--muted);
    margin: 6px 0 0;
    font-size: 0.92rem;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
}

.footer-links a {
    color: var(--muted);
}

.footer-links a:hover {
    color: #fff;
}

.reveal-on-scroll {
    opacity: 0;
    transform: translateY(28px);
    transition:
        opacity 0.72s ease,
        transform 0.72s cubic-bezier(0.22, 1, 0.36, 1);
    transition-delay: var(--reveal-delay, 0ms);
    will-change: opacity, transform;
}

.reveal-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    .reveal-on-scroll {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

@media (max-width: 1199px) {
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 991px) {
    .hero-section {
        padding-top: 120px;
    }

    .hero-copy,
    .hero-card {
        padding: 28px;
    }

    .hero-points,
    .about-grid {
        grid-template-columns: 1fr;
    }

    .cta-box,
    .footer-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 767px) {
    .section-block {
        padding: 72px 0;
    }

    .hero-copy h1 {
        font-size: 2.1rem;
    }

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

    .work-body {
        padding: 18px;
    }

    .hero-actions,
    .cta-actions {
        width: 100%;
    }

    .hero-actions .btn,
    .cta-actions .btn {
        width: 100%;
    }
}