:root {
    --bg-0: #050816;
    --bg-1: #09101f;
    --bg-2: #111a2f;
    --panel: rgba(8, 16, 36, 0.68);
    --panel-strong: rgba(9, 18, 38, 0.9);
    --line: rgba(166, 191, 255, 0.18);
    --line-strong: rgba(125, 211, 252, 0.38);
    --text: #f5f7ff;
    --muted: rgba(232, 238, 255, 0.72);
    --subtle: rgba(232, 238, 255, 0.48);
    --accent: #7dd3fc;
    --accent-strong: #22d3ee;
    --accent-warm: #f7b955;
    --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
    --max-width: 1180px;
    --header-height: 84px;
    --transition: 260ms cubic-bezier(0.22, 1, 0.36, 1);
    --font-display: "Space Grotesk", "Avenir Next", "PingFang SC", sans-serif;
    --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    font-family: var(--font-body);
    color: var(--text);
    background:
        radial-gradient(circle at 15% 18%, rgba(34, 211, 238, 0.18), transparent 24%),
        radial-gradient(circle at 80% 12%, rgba(247, 185, 85, 0.18), transparent 18%),
        radial-gradient(circle at 50% 100%, rgba(125, 211, 252, 0.1), transparent 28%),
        linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 45%, #060912 100%);
    line-height: 1.65;
    overflow-x: hidden;
}

body.nav-open {
    overflow: hidden;
}

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

button {
    font: inherit;
    color: inherit;
}

canvas,
.page-noise {
    position: fixed;
    inset: 0;
    pointer-events: none;
}

#gravity-canvas {
    z-index: -3;
}

.page-noise {
    z-index: -2;
    opacity: 0.14;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 72px 72px;
    mask-image: radial-gradient(circle at center, #000 25%, transparent 100%);
}

.container {
    width: min(var(--max-width), calc(100% - 40px));
    margin: 0 auto;
}

.section-shell {
    position: relative;
    padding: 110px 0;
    scroll-margin-top: calc(var(--header-height) + 22px);
}

.section-heading {
    max-width: 760px;
    margin-bottom: 42px;
}

.section-kicker,
.eyebrow,
.panel-label,
.solution-tag {
    font-family: var(--font-display);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-size: 0.78rem;
    color: var(--accent);
}

.section-heading h2,
.hero h1,
.panel-head h2,
.cta-band h2 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.03em;
}

.section-heading h2 {
    margin-top: 14px;
    font-size: clamp(2rem, 4vw, 3.5rem);
    max-width: 14ch;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    height: var(--header-height);
    backdrop-filter: blur(18px);
    background: rgba(5, 8, 22, 0.48);
    border-bottom: 1px solid transparent;
    transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.site-header.scrolled {
    background: rgba(5, 8, 22, 0.82);
    border-color: rgba(125, 211, 252, 0.14);
    box-shadow: 0 18px 48px rgba(0, 0, 0, 0.2);
}

.header-inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 14px;
}

.brand-mark {
    position: relative;
    width: 42px;
    aspect-ratio: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.brand-core,
.brand-ring {
    position: absolute;
    border-radius: 999px;
}

.brand-core {
    width: 12px;
    height: 12px;
    background: linear-gradient(135deg, var(--accent-warm), var(--accent));
    box-shadow: 0 0 24px rgba(247, 185, 85, 0.55);
}

.brand-ring {
    inset: 0;
    border: 1px solid rgba(125, 211, 252, 0.45);
}

.brand-ring::before,
.brand-ring::after {
    content: "";
    position: absolute;
    inset: 6px;
    border-radius: inherit;
    border: 1px solid rgba(247, 185, 85, 0.22);
}

.brand-ring::after {
    inset: 12px;
    border-color: rgba(125, 211, 252, 0.28);
}

.brand-copy {
    display: grid;
    gap: 1px;
}

.brand-copy strong {
    font-family: var(--font-display);
    font-size: 1.1rem;
    letter-spacing: 0.06em;
}

.brand-copy span:last-child {
    color: var(--subtle);
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 26px;
}

.site-nav a {
    position: relative;
    color: var(--muted);
    font-size: 0.96rem;
    transition: color var(--transition);
}

.site-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 100%;
    height: 1px;
    transform: scaleX(0);
    transform-origin: left;
    background: linear-gradient(90deg, var(--accent), var(--accent-warm));
    transition: transform var(--transition);
}

.site-nav a:hover,
.site-nav a:focus-visible {
    color: var(--text);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
    transform: scaleX(1);
}

.nav-toggle {
    display: none;
    width: 48px;
    height: 48px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(8, 16, 36, 0.72);
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.nav-toggle span {
    position: absolute;
    width: 18px;
    height: 1.5px;
    border-radius: 999px;
    background: var(--text);
    transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle span:first-child {
    transform: translateY(-4px);
}

.nav-toggle span:last-child {
    transform: translateY(4px);
}

.nav-toggle[aria-expanded="true"] span:first-child {
    transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
    transform: rotate(-45deg);
}

.hero {
    padding-top: 70px;
    min-height: calc(100vh - var(--header-height));
    display: flex;
    align-items: center;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
    gap: 44px;
    align-items: center;
}

.hero-copy {
    max-width: 680px;
}

.hero h1 {
    margin-top: 18px;
    font-size: clamp(3rem, 8vw, 6.2rem);
    max-width: 8.8ch;
}

.hero-text {
    margin-top: 24px;
    max-width: 56ch;
    color: var(--muted);
    font-size: 1.05rem;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 34px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 0 22px;
    border-radius: 999px;
    border: 1px solid transparent;
    font-weight: 600;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
}

.button:hover,
.button:focus-visible {
    transform: translateY(-2px);
}

.button-primary {
    color: #05101f;
    background: linear-gradient(135deg, var(--accent) 0%, #b7f0ff 38%, var(--accent-warm) 100%);
    box-shadow: 0 18px 40px rgba(125, 211, 252, 0.18);
}

.button-secondary {
    border-color: rgba(125, 211, 252, 0.32);
    background: rgba(9, 18, 38, 0.68);
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    list-style: none;
    margin-top: 30px;
}

.hero-tags li {
    padding: 9px 14px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(8, 16, 36, 0.48);
    color: var(--subtle);
    font-size: 0.88rem;
}

.panel {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 28%),
        var(--panel);
    box-shadow: var(--shadow);
    backdrop-filter: blur(16px);
}

.panel::before {
    content: "";
    position: absolute;
    inset: auto -12% -40% auto;
    width: 220px;
    height: 220px;
    border-radius: 999px;
    background: radial-gradient(circle, rgba(247, 185, 85, 0.2) 0%, transparent 72%);
    opacity: 0.85;
}

.hero-panel {
    min-height: 480px;
    padding: 34px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.panel-orbit {
    position: absolute;
    inset: 40px 50px auto auto;
    width: 220px;
    height: 220px;
    border-radius: 999px;
}

.panel-orbit span {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 1px solid rgba(125, 211, 252, 0.16);
    animation: pulse 9s ease-in-out infinite;
}

.panel-orbit span:nth-child(2) {
    inset: 26px;
    border-color: rgba(247, 185, 85, 0.16);
    animation-delay: -3s;
}

.panel-orbit span:nth-child(3) {
    inset: 54px;
    animation-delay: -6s;
}

.panel-head {
    position: relative;
    z-index: 1;
}

.panel-head h2 {
    margin-top: 14px;
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    max-width: 11ch;
}

.panel-text {
    position: relative;
    z-index: 1;
    margin-top: 18px;
    color: var(--muted);
    max-width: 34ch;
}

.panel-metrics {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin-top: 30px;
}

.panel-metrics div {
    padding: 16px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(125, 211, 252, 0.16);
    background: rgba(5, 12, 26, 0.42);
}

.panel-metrics span,
.value-index,
.process-step span {
    font-family: var(--font-display);
    color: var(--accent-warm);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.panel-metrics p {
    margin-top: 6px;
    color: var(--subtle);
    font-size: 0.88rem;
}

.about-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 26px;
}

.intro-panel {
    padding: 32px;
}

.intro-panel p + p {
    margin-top: 18px;
}

.intro-panel p {
    color: var(--muted);
    font-size: 1.02rem;
}

.value-grid {
    display: grid;
    gap: 18px;
}

.value-card,
.feature-card,
.solution-card,
.contact-card {
    padding: 26px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: rgba(9, 18, 38, 0.6);
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.2);
}

.value-card h3,
.feature-card h3,
.solution-card h3,
.process-step h3,
.contact-card h3 {
    margin-top: 12px;
    font-size: 1.28rem;
    font-weight: 600;
}

.value-card p,
.feature-card p,
.solution-card p,
.process-step p,
.contact-card p,
.cta-band p {
    margin-top: 12px;
    color: var(--muted);
}

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

.feature-icon {
    width: 46px;
    height: 46px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(125, 211, 252, 0.18), rgba(247, 185, 85, 0.14));
    color: var(--accent);
    font-size: 1.35rem;
}

.feature-card ul {
    margin-top: 18px;
    padding-left: 18px;
    color: var(--subtle);
}

.feature-card li + li {
    margin-top: 8px;
}

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

.solution-tag {
    color: var(--accent-warm);
}

.process-line {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 16px;
}

.process-step {
    position: relative;
    padding: 22px 18px 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--line);
    background: rgba(9, 18, 38, 0.56);
}

.process-step::before {
    content: "";
    position: absolute;
    left: 18px;
    right: 18px;
    top: 56px;
    height: 1px;
    background: linear-gradient(90deg, rgba(125, 211, 252, 0.4), transparent);
}

.process-step h3 {
    margin-top: 20px;
}

.cta-band {
    padding: 42px;
    text-align: center;
    background:
        radial-gradient(circle at top center, rgba(125, 211, 252, 0.14), transparent 34%),
        radial-gradient(circle at bottom right, rgba(247, 185, 85, 0.12), transparent 30%),
        var(--panel-strong);
}

.cta-band h2 {
    margin-top: 12px;
    font-size: clamp(2rem, 3.6vw, 3.2rem);
}

.cta-band .button {
    margin-top: 24px;
}

.contact-shell {
    padding-bottom: 130px;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.contact-link {
    display: inline-flex;
    margin-top: 16px;
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--accent);
}

.contact-note {
    display: inline-flex;
    margin-top: 16px;
    color: var(--subtle);
    font-size: 0.94rem;
}

.site-footer {
    border-top: 1px solid rgba(125, 211, 252, 0.12);
    background: rgba(4, 9, 18, 0.85);
}

.footer-inner {
    min-height: 96px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    color: var(--subtle);
}

[data-reveal] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 700ms ease, transform 700ms ease;
}

[data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes pulse {
    0%,
    100% {
        transform: scale(1);
        opacity: 0.48;
    }

    50% {
        transform: scale(1.04);
        opacity: 0.9;
    }
}

@media (max-width: 1080px) {
    .hero-grid,
    .about-layout,
    .card-grid,
    .solution-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .process-line {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 820px) {
    .site-nav {
        position: fixed;
        left: 20px;
        right: 20px;
        top: calc(var(--header-height) - 8px);
        display: grid;
        gap: 0;
        padding: 18px;
        border: 1px solid var(--line);
        border-radius: 24px;
        background: rgba(5, 10, 24, 0.96);
        box-shadow: var(--shadow);
        opacity: 0;
        pointer-events: none;
        transform: translateY(-12px);
        transition: opacity var(--transition), transform var(--transition);
    }

    body.nav-open .site-nav {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
    }

    .site-nav a {
        padding: 14px 6px;
        border-bottom: 1px solid rgba(125, 211, 252, 0.08);
    }

    .site-nav a:last-child {
        border-bottom: 0;
    }

    .nav-toggle {
        display: inline-flex;
        position: relative;
        flex: none;
    }

    .hero {
        padding-top: 36px;
    }

    .hero-panel {
        min-height: auto;
    }

    .panel-orbit {
        inset: 28px 28px auto auto;
        width: 170px;
        height: 170px;
    }
}

@media (max-width: 640px) {
    .container {
        width: min(var(--max-width), calc(100% - 28px));
    }

    .section-shell {
        padding: 82px 0;
    }

    .hero h1 {
        max-width: 10ch;
        font-size: clamp(2.6rem, 14vw, 4.2rem);
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .button {
        width: 100%;
    }

    .hero-tags {
        gap: 10px;
    }

    .hero-tags li {
        width: 100%;
        text-align: center;
    }

    .hero-panel,
    .intro-panel,
    .cta-band,
    .value-card,
    .feature-card,
    .solution-card,
    .contact-card {
        padding: 22px;
    }

    .panel-metrics,
    .process-line {
        grid-template-columns: 1fr;
    }

    .footer-inner {
        padding: 22px 0;
        align-items: flex-start;
        flex-direction: column;
    }
}