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

:root {
    --bg: #05070d;
    --bg-2: #0a1018;
    --panel: rgba(13, 20, 31, 0.78);
    --panel-strong: rgba(16, 25, 38, 0.96);
    --ink: #e8f1ff;
    --muted: #8fa3bc;
    --line: rgba(126, 242, 255, 0.17);
    --line-strong: rgba(126, 242, 255, 0.38);
    --cyan: #67e8f9;
    --green: #7cf7b0;
    --amber: #f8c86a;
    --red: #ff7d8b;
    --violet: #b8a5ff;
    --shadow: 0 24px 80px rgba(0, 0, 0, 0.42);
}

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
        "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    background:
        linear-gradient(rgba(103, 232, 249, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(103, 232, 249, 0.035) 1px, transparent 1px),
        radial-gradient(circle at 18% 8%, rgba(103, 232, 249, 0.16), transparent 28rem),
        radial-gradient(circle at 86% 18%, rgba(124, 247, 176, 0.12), transparent 26rem),
        linear-gradient(180deg, var(--bg) 0%, #08111a 48%, #05070d 100%);
    background-size: 44px 44px, 44px 44px, auto, auto, auto;
    color: var(--ink);
    line-height: 1.6;
}

a {
    color: inherit;
}

.site-noise {
    pointer-events: none;
    position: fixed;
    inset: 0;
    z-index: 200;
    opacity: 0.36;
    background: repeating-linear-gradient(
        180deg,
        rgba(255, 255, 255, 0.035) 0,
        rgba(255, 255, 255, 0.035) 1px,
        transparent 1px,
        transparent 4px
    );
    mix-blend-mode: soft-light;
}

.container {
    width: min(1160px, calc(100% - 48px));
    margin: 0 auto;
}

.header {
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--line);
    background: rgba(5, 7, 13, 0.76);
    backdrop-filter: blur(18px);
}

.header-content {
    min-height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.logo,
.nav-link,
.hero-kicker,
.section-kicker,
.terminal-body,
.card-code,
.card-status,
.stat-item span {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    font-weight: 800;
    letter-spacing: 0;
}

.logo-icon {
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    background: rgba(103, 232, 249, 0.12);
    color: var(--cyan);
    font-size: 13px;
    box-shadow: 0 0 24px rgba(103, 232, 249, 0.14);
}

.logo-text {
    font-size: 17px;
}

.nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    text-decoration: none;
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
    padding: 8px 12px;
    border: 1px solid transparent;
    border-radius: 8px;
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.nav-link:hover {
    color: var(--cyan);
    border-color: var(--line);
    background: rgba(103, 232, 249, 0.08);
}

.hero {
    position: relative;
    overflow: hidden;
    padding: 86px 0 36px;
    background:
        linear-gradient(90deg, rgba(5, 7, 13, 0.98) 0%, rgba(5, 7, 13, 0.82) 42%, rgba(5, 7, 13, 0.48) 100%),
        linear-gradient(180deg, rgba(5, 7, 13, 0.12) 0%, rgba(5, 7, 13, 0.74) 100%),
        url("assets/hero-ai-lab.png") center right / cover no-repeat;
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(rgba(103, 232, 249, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(103, 232, 249, 0.035) 1px, transparent 1px);
    background-size: 44px 44px;
    opacity: 0.9;
    pointer-events: none;
}

.hero::after {
    content: "";
    position: absolute;
    inset: 0 0 auto;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--cyan), transparent);
    opacity: 0.42;
    pointer-events: none;
}

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

.hero-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(340px, 430px);
    gap: 42px;
    align-items: center;
}

.hero-kicker,
.section-kicker {
    color: var(--green);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
}

.hero-title {
    max-width: 760px;
    margin: 18px 0 18px;
    font-size: clamp(42px, 6vw, 72px);
    line-height: 1.04;
    font-weight: 950;
    letter-spacing: 0;
}

.hero-title::after {
    content: "_";
    color: var(--cyan);
    animation: blink 1.1s steps(2, start) infinite;
}

@keyframes blink {
    50% {
        opacity: 0;
    }
}

.hero-desc {
    max-width: 740px;
    color: #b8c7dc;
    font-size: 18px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 30px;
}

.primary-action,
.secondary-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 18px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 850;
    transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.primary-action {
    color: #041016;
    background: linear-gradient(135deg, var(--cyan), var(--green));
    box-shadow: 0 12px 36px rgba(103, 232, 249, 0.18);
}

.secondary-action {
    color: var(--ink);
    border: 1px solid var(--line-strong);
    background: rgba(13, 20, 31, 0.62);
}

.primary-action:hover,
.secondary-action:hover {
    transform: translateY(-2px);
}

.secondary-action:hover {
    border-color: var(--cyan);
    background: rgba(103, 232, 249, 0.08);
}

.terminal-panel {
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    background: linear-gradient(180deg, rgba(15, 24, 38, 0.92), rgba(7, 12, 20, 0.92));
    box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.06);
    overflow: hidden;
}

.terminal-top {
    display: flex;
    gap: 8px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.03);
}

.terminal-top span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--red);
}

.terminal-top span:nth-child(2) {
    background: var(--amber);
}

.terminal-top span:nth-child(3) {
    background: var(--green);
}

.terminal-body {
    padding: 20px;
    color: #cde6f4;
    font-size: 14px;
}

.terminal-body p + p {
    margin-top: 10px;
}

.terminal-body span {
    color: var(--green);
}

.terminal-body strong {
    color: var(--cyan);
}

.signal-bars {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 6px;
    height: 72px;
    align-items: end;
    margin-top: 24px;
}

.signal-bars i {
    display: block;
    min-height: 18px;
    border-radius: 4px 4px 0 0;
    background: linear-gradient(180deg, var(--cyan), rgba(103, 232, 249, 0.16));
    opacity: 0.9;
}

.signal-bars i:nth-child(1) { height: 34%; }
.signal-bars i:nth-child(2) { height: 64%; }
.signal-bars i:nth-child(3) { height: 44%; }
.signal-bars i:nth-child(4) { height: 86%; }
.signal-bars i:nth-child(5) { height: 52%; }
.signal-bars i:nth-child(6) { height: 72%; }
.signal-bars i:nth-child(7) { height: 40%; }
.signal-bars i:nth-child(8) { height: 92%; }

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin-top: 46px;
}

.stat-item {
    min-height: 112px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(13, 20, 31, 0.58);
}

.stat-item span {
    display: block;
    color: var(--muted);
    font-size: 12px;
    font-weight: 800;
    margin-bottom: 18px;
}

.stat-item strong {
    display: block;
    color: var(--ink);
    font-size: 34px;
    line-height: 1;
}

.visitor-counter {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
    padding: 14px 16px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(13, 20, 31, 0.72);
    color: #b8c7dc;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.counter-prefix,
#visitor-count {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

.counter-prefix {
    color: var(--green);
    font-size: 12px;
    font-weight: 850;
}

#visitor-count {
    color: var(--cyan);
    font-size: 20px;
    line-height: 1;
}

#visitor-count-text {
    color: var(--ink);
    font-weight: 850;
}

.apps-section {
    padding: 74px 0 78px;
}

.section-heading {
    display: grid;
    grid-template-columns: minmax(0, 0.75fr) minmax(280px, 1fr);
    gap: 24px;
    align-items: end;
    margin-bottom: 28px;
}

.section-title {
    margin-top: 8px;
    font-size: 34px;
    line-height: 1.15;
    font-weight: 950;
    letter-spacing: 0;
}

.section-desc {
    color: var(--muted);
    font-size: 15px;
}

.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
}

.loading {
    grid-column: 1 / -1;
    min-height: 160px;
    display: grid;
    place-items: center;
    color: var(--muted);
    border: 1px dashed var(--line);
    border-radius: 8px;
    background: rgba(13, 20, 31, 0.42);
}

.card {
    position: relative;
    min-height: 238px;
    display: flex;
    flex-direction: column;
    padding: 18px;
    overflow: hidden;
    cursor: pointer;
    border: 1px solid var(--line);
    border-radius: 8px;
    background:
        linear-gradient(135deg, rgba(103, 232, 249, 0.08), transparent 46%),
        var(--panel);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.card::before {
    content: "";
    position: absolute;
    inset: 0;
    border-top: 2px solid rgba(103, 232, 249, 0.48);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.card:hover {
    transform: translateY(-4px);
    border-color: rgba(103, 232, 249, 0.58);
    box-shadow: 0 18px 54px rgba(0, 0, 0, 0.34);
}

.card:hover::before {
    opacity: 1;
}

.card-disabled {
    cursor: default;
}

.card-disabled:hover {
    transform: none;
    border-color: var(--line);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.card-disabled:hover::before {
    opacity: 0;
}

.card-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 22px;
}

.card-icon {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.04);
    font-size: 24px;
    line-height: 1;
}

.card-code {
    color: var(--muted);
    font-size: 12px;
    font-weight: 800;
}

.card-title {
    color: var(--ink);
    font-size: 19px;
    font-weight: 900;
    margin-bottom: 10px;
}

.card-desc {
    flex: 1;
    color: #a9b9ce;
    font-size: 14px;
    line-height: 1.75;
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-top: 22px;
}

.card-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 28px;
    padding: 0 10px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 850;
    border: 1px solid currentColor;
}

.card-status::before {
    content: "";
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: currentColor;
    box-shadow: 0 0 12px currentColor;
}

.card-status.online {
    color: var(--green);
}

.card-status.offline {
    color: var(--red);
}

.card-status.developing {
    color: var(--amber);
}

.card-arrow {
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: 8px;
    color: var(--cyan);
    transition: transform 0.2s ease, background 0.2s ease;
}

.card:hover .card-arrow {
    transform: translateX(3px);
    background: rgba(103, 232, 249, 0.1);
}

.card-disabled .card-arrow {
    opacity: 0.36;
}

.card-disabled:hover .card-arrow {
    transform: none;
    background: transparent;
}

.about-section {
    padding: 72px 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    background: rgba(3, 6, 12, 0.72);
}

.about-layout {
    display: grid;
    grid-template-columns: minmax(220px, 0.7fr) minmax(0, 1fr);
    gap: 38px;
    align-items: start;
}

.about-content {
    max-width: 780px;
    padding: 24px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel-strong);
    color: #aebfd4;
    font-size: 16px;
    line-height: 1.9;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 178px;
    gap: 24px;
    align-items: center;
}

.about-text p + p {
    margin-top: 12px;
}

.qr-card {
    display: grid;
    justify-items: center;
    gap: 10px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.04);
}

.qr-card img {
    display: block;
    width: min(100%, 150px);
    height: auto;
    object-fit: contain;
    border-radius: 8px;
    background: #fff;
}

.qr-card span {
    color: var(--cyan);
    font-size: 13px;
    font-weight: 850;
}

.footer {
    padding: 34px 0;
    color: var(--muted);
    text-align: center;
    font-size: 14px;
}

@media (max-width: 920px) {
    .hero-layout,
    .section-heading,
    .about-layout {
        grid-template-columns: 1fr;
    }

    .terminal-panel {
        max-width: 560px;
    }

    .about-content {
        max-width: none;
    }
}

@media (max-width: 680px) {
    .container {
        width: min(100% - 36px, 1160px);
    }

    .header-content {
        min-height: auto;
        padding: 14px 0;
        align-items: flex-start;
        flex-direction: column;
    }

    .hero {
        padding: 58px 0 30px;
    }

    .hero-desc {
        font-size: 16px;
    }

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

    .primary-action,
    .secondary-action {
        width: 100%;
    }

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

    .visitor-counter {
        align-items: flex-start;
        flex-direction: column;
    }

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

    .apps-section,
    .about-section {
        padding: 52px 0;
    }

    .section-title {
        font-size: 28px;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .qr-card {
        justify-self: start;
        width: min(100%, 190px);
    }
}