:root {
    --bg: #09090d;
    --bg-soft: #0f121a;
    --panel: rgba(17, 21, 31, 0.9);
    --panel-2: rgba(255, 255, 255, 0.05);
    --border: rgba(255, 255, 255, 0.09);
    --text: #f4f7fb;
    --muted: #9aa4bd;
    --accent: #6ef0c2;
    --accent-2: #88a7ff;
    --warm: #ffb066;
    --shadow: 0 28px 60px rgba(0, 0, 0, 0.42);
    --radius: 26px;
    --radius-sm: 16px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    overflow-x: hidden;
    color: var(--text);
    font-family: "Trebuchet MS", "Segoe UI", sans-serif;
    background:
        radial-gradient(circle at top left, rgba(136, 167, 255, 0.18), transparent 28%),
        radial-gradient(circle at top right, rgba(110, 240, 194, 0.12), transparent 24%),
        linear-gradient(180deg, #08090d 0%, #0b0f16 50%, #09090d 100%);
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    opacity: 0.35;
    background:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(circle at center, black, transparent 82%);
}

a {
    color: inherit;
}

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

button {
    border: 0;
    padding: 13px 18px;
    border-radius: 999px;
    font: inherit;
    font-weight: 800;
    cursor: pointer;
    color: #081016;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    box-shadow: 0 12px 26px rgba(110, 240, 194, 0.18);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 30px rgba(136, 167, 255, 0.25);
}

.ghost-btn {
    color: var(--text);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: none;
}

.shell {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
}

.navbar {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 0;
    background: rgba(8, 10, 15, 0.72);
    backdrop-filter: blur(16px);
}

.brand {
    font-size: 1.15rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-decoration: none;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    padding: 0;
    margin-left: auto;
    border: 1px solid var(--border);
    border-radius: 18px;
    color: var(--text);
    background: rgba(255, 255, 255, 0.04);
    box-shadow: none;
}

.nav-toggle:hover {
    box-shadow: none;
    border-color: rgba(136, 167, 255, 0.28);
}

.nav-toggle-box {
    display: grid;
    gap: 4px;
}

.nav-toggle-bar {
    display: block;
    width: 20px;
    height: 2px;
    border-radius: 999px;
    background: currentColor;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.navbar.nav-open .nav-toggle-bar:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.navbar.nav-open .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

.navbar.nav-open .nav-toggle-bar:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.nav-links a {
    text-decoration: none;
    color: var(--muted);
    padding: 8px 12px;
    border-radius: 999px;
    min-width: 0;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
}

.hero {
    padding: 64px 0 42px;
}

.hero-card,
.card,
.legal-card,
.notice {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02)),
        var(--panel);
    box-shadow: var(--shadow);
}

.hero-card {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 28px;
    padding: 34px;
}

.eyebrow {
    margin: 0 0 12px;
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.hero h1 {
    margin: 0 0 14px;
    font-size: clamp(2.8rem, 6vw, 5.2rem);
    line-height: 0.95;
    letter-spacing: -0.05em;
}

.hero p,
.copy,
.notice p,
.card p,
.legal-card p,
.legal-card li,
footer {
    color: var(--muted);
    line-height: 1.75;
}

.cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 24px;
}

.hero-visual {
    position: relative;
    overflow: hidden;
    min-height: 360px;
    border-radius: 24px;
    background:
        radial-gradient(circle at 20% 20%, rgba(110, 240, 194, 0.22), transparent 30%),
        radial-gradient(circle at 80% 20%, rgba(255, 176, 102, 0.18), transparent 26%),
        linear-gradient(135deg, rgba(136, 167, 255, 0.18), rgba(255, 255, 255, 0.02));
}

.hero-visual::before,
.hero-visual::after {
    content: "";
    position: absolute;
    border-radius: 999px;
    filter: blur(10px);
}

.hero-visual::before {
    inset: auto -50px 18px auto;
    width: 210px;
    height: 210px;
    background: radial-gradient(circle, rgba(136, 167, 255, 0.28), transparent 68%);
}

.hero-visual::after {
    inset: 30px auto auto -20px;
    width: 180px;
    height: 180px;
    background: radial-gradient(circle, rgba(110, 240, 194, 0.24), transparent 68%);
}

.floating-panel {
    position: absolute;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    backdrop-filter: blur(14px);
    background: rgba(10, 12, 18, 0.66);
    box-shadow: var(--shadow);
}

.panel-a {
    top: 28px;
    right: 22px;
    width: 190px;
    padding: 18px;
}

.panel-b {
    left: 22px;
    bottom: 26px;
    width: 230px;
    padding: 20px;
}

.panel-label {
    margin: 0 0 6px;
    color: var(--accent);
    font-size: 0.76rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.panel-value {
    margin: 0;
    font-size: 1.65rem;
    font-weight: 800;
    overflow-wrap: anywhere;
}

.section {
    padding: 18px 0 52px;
}

.section-title {
    margin: 0 0 10px;
    font-size: 2rem;
}

.section-lead {
    max-width: 780px;
    color: var(--muted);
    line-height: 1.75;
}

.grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-top: 22px;
}

.page-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-top: 22px;
}

.card {
    padding: 22px;
}

.card h3 {
    margin-top: 0;
}

.link-card {
    display: block;
    padding: 22px;
    text-decoration: none;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02)),
        var(--panel);
    box-shadow: var(--shadow);
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.link-card:hover {
    transform: translateY(-3px);
    border-color: rgba(136, 167, 255, 0.28);
}

.link-card span {
    display: inline-flex;
    align-items: center;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.link-card h3 {
    margin: 16px 0 10px;
}

.link-card p {
    margin: 0;
    color: var(--muted);
    line-height: 1.75;
}

.kpi {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text);
    font-size: 0.92rem;
    font-weight: 700;
}

.notice {
    padding: 20px 22px;
    margin-top: 20px;
}

.legal-wrap {
    padding: 42px 0 56px;
}

.legal-card {
    padding: 30px;
    overflow-wrap: anywhere;
}

.legal-card h1,
.legal-card h2 {
    margin-top: 0;
}

.legal-card h2 {
    margin-top: 26px;
}

.tool-shell {
    padding: 42px 0 56px;
}

.tool-hero {
    margin-bottom: 24px;
}

.tool-hero h1 {
    margin: 0 0 14px;
    font-size: clamp(2.4rem, 5vw, 4rem);
    line-height: 1;
    letter-spacing: -0.04em;
}

.tool-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
    gap: 18px;
}

.tool-card,
.status-box {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02)),
        var(--panel);
    box-shadow: var(--shadow);
}

.tool-card {
    padding: 24px;
}

.tool-card h2,
.tool-card h3 {
    margin-top: 0;
}

.tool-form {
    display: grid;
    gap: 16px;
}

.tool-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 700;
}

.tool-form input {
    width: 100%;
    padding: 13px 14px;
    border: 1px solid var(--border);
    border-radius: 14px;
    color: var(--text);
    background: rgba(255, 255, 255, 0.04);
    font: inherit;
}

.demo-list-editor {
    display: grid;
    gap: 14px;
}

.demo-row {
    display: grid;
    gap: 12px;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.03);
}

.demo-row-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 12px;
}

.tool-form input[readonly] {
    cursor: default;
    opacity: 0.9;
}

.tool-form input:focus {
    outline: 0;
    border-color: rgba(136, 167, 255, 0.7);
    box-shadow: 0 0 0 4px rgba(136, 167, 255, 0.14);
}

.helper-text,
.tool-list li,
.tool-card p,
.status-box {
    color: var(--muted);
    line-height: 1.75;
}

.helper-text {
    margin-bottom: 0;
}

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

.tool-actions button,
.cta-row a,
.cta-row button {
    max-width: 100%;
}

.tool-list {
    margin: 0;
    padding-left: 20px;
}

.status-box {
    min-height: 130px;
    padding: 18px;
    white-space: pre-wrap;
}

.status-box.success {
    color: #d7ffef;
    border-color: rgba(110, 240, 194, 0.3);
    background:
        linear-gradient(180deg, rgba(110, 240, 194, 0.1), rgba(255, 255, 255, 0.02)),
        var(--panel);
}

.status-box.error {
    color: #ffe6ea;
    border-color: rgba(255, 122, 140, 0.3);
    background:
        linear-gradient(180deg, rgba(255, 122, 140, 0.1), rgba(255, 255, 255, 0.02)),
        var(--panel);
}

.stat-strip,
.split-grid,
.story-grid,
.quote-grid,
.detail-grid,
.feature-matrix {
    display: grid;
    gap: 18px;
    margin-top: 22px;
}

.stat-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.split-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
}

.story-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
}

.quote-grid,
.detail-grid,
.feature-matrix {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.stat-card,
.info-panel,
.quote-card,
.detail-card,
.timeline-card,
.matrix-card,
.banner-panel {
    padding: 22px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02)),
        var(--panel);
    box-shadow: var(--shadow);
}

.stat-card {
    min-height: 100%;
}

.stat-label,
.chip-list span {
    display: inline-flex;
    align-items: center;
    padding: 7px 11px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--accent);
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.stat-value {
    margin: 14px 0 6px;
    font-size: 2rem;
    font-weight: 900;
    line-height: 1;
}

.info-panel h3,
.quote-card h3,
.detail-card h3,
.timeline-card h3,
.matrix-card h3,
.banner-panel h3 {
    margin-top: 0;
}

.info-panel p,
.quote-card p,
.detail-card p,
.timeline-card p,
.matrix-card p,
.banner-panel p {
    margin-bottom: 0;
}

.stack-list,
.check-list,
.timeline-list {
    display: grid;
    gap: 12px;
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
}

.stack-list li,
.check-list li,
.timeline-list li {
    padding: 14px 16px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.03);
    color: var(--muted);
    line-height: 1.65;
}

.chip-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.timeline-list li strong,
.check-list li strong,
.stack-list li strong {
    display: block;
    margin-bottom: 4px;
    color: var(--text);
}

.quote-card {
    position: relative;
    overflow: hidden;
}

.quote-card::before {
    content: "\"";
    position: absolute;
    top: 8px;
    right: 16px;
    color: rgba(136, 167, 255, 0.18);
    font-size: 4rem;
    line-height: 1;
    font-weight: 900;
}

.quote-mark {
    color: var(--accent);
    font-size: 0.9rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.banner-panel {
    margin-top: 22px;
}

.banner-panel strong {
    color: var(--text);
}

.footer-links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 12px;
}

.footer-links a {
    text-decoration: none;
    color: var(--muted);
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

footer {
    padding: 24px 0 42px;
    text-align: center;
}

@media (max-width: 980px) {
    .hero-card,
    .grid,
    .tool-grid,
    .page-grid,
    .demo-row-grid,
    .stat-strip,
    .split-grid,
    .story-grid,
    .quote-grid,
    .detail-grid,
    .feature-matrix {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        min-height: 300px;
    }
}

@media (max-width: 640px) {
    .shell {
        width: min(100% - 20px, 1180px);
    }

    .hero {
        padding: 34px 0 28px;
    }

    .hero-card,
    .legal-card,
    .tool-card {
        padding: 20px;
    }

    .navbar {
        position: sticky;
        top: 0;
        flex-wrap: wrap;
        align-items: center;
        padding: 16px 0 12px;
        gap: 12px;
    }

    .brand {
        flex: 1 1 auto;
        text-align: left;
    }

    .navbar.nav-ready .nav-toggle {
        position: relative;
        display: inline-flex;
    }

    .navbar.nav-ready .nav-links {
        width: 100%;
        flex-basis: 100%;
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        max-height: 0;
        padding: 0;
        overflow: hidden;
        opacity: 0;
        pointer-events: none;
        transition: max-height 0.25s ease, opacity 0.2s ease, padding 0.2s ease;
    }

    .navbar.nav-ready.nav-open .nav-links {
        max-height: 420px;
        padding-top: 4px;
        opacity: 1;
        pointer-events: auto;
    }

    .nav-links a {
        text-align: center;
        flex: none;
        width: 100%;
        padding: 12px 14px;
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(255, 255, 255, 0.06);
    }

    .hero h1,
    .tool-hero h1 {
        font-size: clamp(2rem, 10vw, 3rem);
    }

    .section-title {
        font-size: 1.65rem;
    }

    .cta-row {
        flex-direction: column;
    }

    .cta-row a,
    .cta-row button,
    .tool-actions button {
        width: 100%;
    }

    .hero-visual {
        min-height: 240px;
    }

    .floating-panel {
        position: relative;
        top: auto;
        right: auto;
        left: auto;
        bottom: auto;
        width: 100%;
        margin: 14px 0 0;
    }

    .panel-a,
    .panel-b {
        width: 100%;
        padding: 18px;
    }

    .notice {
        padding: 18px;
    }

    .tool-shell,
    .legal-wrap,
    footer {
        padding-top: 28px;
    }

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

    .tool-list {
        padding-left: 18px;
    }

    .footer-links {
        flex-direction: column;
        align-items: stretch;
    }

    .chip-list {
        flex-direction: column;
    }

    .footer-links a {
        text-align: center;
    }

    .page-grid {
        gap: 14px;
    }
}

@media (max-width: 420px) {
    .shell {
        width: min(100% - 16px, 1180px);
    }

    .hero-card,
    .legal-card,
    .tool-card,
    .notice,
    .card {
        padding: 16px;
        border-radius: 20px;
    }

    .nav-links a {
        width: 100%;
    }

    button {
        padding: 12px 16px;
    }

    .panel-value {
        font-size: 1.35rem;
    }
}