:root {
    --bg: #060d12;
    --bg-soft: #09141b;
    --panel: rgba(12, 26, 35, 0.78);
    --panel-solid: #0c1a23;
    --line: rgba(150, 190, 207, 0.16);
    --line-strong: rgba(150, 190, 207, 0.28);
    --text: #e9f2f5;
    --muted: #93aab6;
    --mint: #37e0b0;
    --mint-soft: rgba(55, 224, 176, 0.12);
    --blue: #5aa8ff;
    --blue-soft: rgba(90, 168, 255, 0.12);
    --amber: #f7c96b;
    --radius: 20px;
    --shadow: 0 40px 90px rgba(0, 0, 0, 0.5);
    --font: "Segoe UI Variable Text", "Segoe UI", "Microsoft YaHei UI", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    color-scheme: dark;
}

body {
    margin: 0;
    min-width: 320px;
    background:
        radial-gradient(900px 620px at 12% -8%, rgba(55, 224, 176, 0.13), transparent 60%),
        radial-gradient(820px 560px at 96% 2%, rgba(90, 168, 255, 0.12), transparent 58%),
        var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.75), transparent 72%);
    -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.75), transparent 72%);
}

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

img,
svg {
    display: block;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

:focus-visible {
    outline: 2px solid var(--mint);
    outline-offset: 3px;
}

.skip-link {
    position: absolute;
    top: 10px;
    left: 10px;
    z-index: 100;
    padding: 10px 14px;
    border-radius: 10px;
    background: var(--text);
    color: var(--bg);
    font-weight: 700;
    transform: translateY(-160%);
}

.skip-link:focus {
    transform: translateY(0);
}

.container {
    width: min(1120px, calc(100% - 40px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 30;
    border-bottom: 1px solid transparent;
    background: rgba(6, 13, 18, 0.72);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.site-header.is-scrolled {
    border-bottom-color: var(--line);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 72px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 11px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.brand img {
    width: 34px;
    height: 34px;
    border-radius: 9px;
    box-shadow: 0 0 24px rgba(55, 224, 176, 0.18);
}

.nav {
    display: flex;
    align-items: center;
    gap: 22px;
    color: var(--muted);
    font-size: 0.92rem;
    font-weight: 500;
}

.nav a {
    transition: color 160ms ease;
}

.nav a:hover {
    color: var(--text);
}

.nav .nav-github {
    color: var(--text);
}

.nav .lang {
    padding: 7px 11px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--text);
    font-size: 0.84rem;
}

.nav .lang:hover {
    border-color: var(--line-strong);
    background: rgba(255, 255, 255, 0.04);
}

.hero {
    position: relative;
    padding: 92px 0 78px;
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.04fr 0.96fr;
    gap: 54px;
    align-items: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    margin: 0 0 22px;
    padding: 7px 12px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.03);
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--mint);
    box-shadow: 0 0 0 4px rgba(55, 224, 176, 0.12);
}

h1 {
    margin: 0;
    max-width: 760px;
    font-size: clamp(3rem, 7.2vw, 5.4rem);
    font-weight: 760;
    letter-spacing: -0.055em;
    line-height: 0.98;
}

.gradient {
    background: linear-gradient(100deg, var(--mint) 10%, var(--blue) 92%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.lede {
    max-width: 620px;
    margin: 24px 0 0;
    color: var(--muted);
    font-size: clamp(1.02rem, 1.5vw, 1.18rem);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 32px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    min-height: 46px;
    padding: 0 19px;
    border: 1px solid transparent;
    border-radius: 12px;
    font-size: 0.95rem;
    font-weight: 700;
    transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease, background 160ms ease;
}

.button:hover {
    transform: translateY(-1px);
}

.button-primary {
    background: linear-gradient(135deg, var(--mint), #66f0c7);
    color: #03130e;
    box-shadow: 0 12px 30px rgba(55, 224, 176, 0.18);
}

.button-primary:hover {
    box-shadow: 0 16px 40px rgba(55, 224, 176, 0.26);
}

.button-ghost {
    border-color: var(--line-strong);
    background: rgba(255, 255, 255, 0.035);
    color: var(--text);
}

.button-ghost:hover {
    border-color: rgba(255, 255, 255, 0.38);
    background: rgba(255, 255, 255, 0.06);
}

.button svg {
    width: 17px;
    height: 17px;
}

.meta-list {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin: 22px 0 0;
    padding: 0;
    list-style: none;
    color: var(--muted);
    font-size: 0.86rem;
}

.meta-list li {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.meta-list li::before {
    content: "";
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--mint);
}

.hero-visual {
    position: relative;
    display: grid;
    place-items: center;
    min-height: 470px;
}

.hero-glow {
    position: absolute;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(55, 224, 176, 0.18), rgba(90, 168, 255, 0.08) 42%, transparent 70%);
    filter: blur(20px);
}

.tray-card {
    position: relative;
    width: min(100%, 402px);
    padding: 16px;
    border: 1px solid var(--line-strong);
    border-radius: 24px;
    background: linear-gradient(180deg, rgba(17, 38, 50, 0.97), rgba(8, 20, 28, 0.99));
    box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.06);
    transform: rotate(-1.6deg);
}

.tray-head {
    display: flex;
    align-items: center;
    gap: 11px;
    padding: 4px 4px 14px;
    border-bottom: 1px solid var(--line);
}

.tray-head img {
    width: 34px;
    height: 34px;
    border-radius: 9px;
}

.tray-head div {
    display: flex;
    flex-direction: column;
    gap: 1px;
    min-width: 0;
}

.tray-head strong {
    font-size: 0.9rem;
    letter-spacing: -0.01em;
}

.tray-head span:not(.tray-badge) {
    color: var(--muted);
    font-size: 0.72rem;
}

.tray-badge {
    margin-left: auto;
    padding: 3px 8px;
    border: 1px solid rgba(55, 224, 176, 0.25);
    border-radius: 999px;
    background: var(--mint-soft);
    color: var(--mint);
    font-size: 0.63rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.tray-status {
    display: flex;
    align-items: center;
    gap: 11px;
    margin: 13px 0 10px;
    padding: 12px 13px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.025);
}

.tray-status .status-dot {
    width: 8px;
    height: 8px;
    flex: 0 0 auto;
}

.tray-status div {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.tray-status span:not(.status-dot) {
    color: var(--muted);
    font-size: 0.7rem;
}

.tray-status strong {
    font-size: 0.82rem;
    font-weight: 600;
}

.tray-menu {
    display: grid;
    gap: 3px;
}

.tray-row {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 40px;
    padding: 0 10px;
    border-radius: 10px;
    color: #cfe0e6;
    font-size: 0.79rem;
}

.tray-row svg {
    width: 15px;
    height: 15px;
    flex: 0 0 auto;
    color: var(--muted);
}

.tray-row .row-check {
    margin-left: auto;
    color: var(--mint);
    opacity: 0;
}

.tray-row.active {
    background: linear-gradient(90deg, rgba(55, 224, 176, 0.16), rgba(55, 224, 176, 0.04));
    color: var(--text);
}

.tray-row.active svg {
    color: var(--mint);
}

.tray-row.active .row-check {
    opacity: 1;
}

.tray-row.danger svg {
    color: #ff8f8f;
}

.tray-separator {
    height: 1px;
    margin: 5px 8px;
    background: var(--line);
}

.toast-card {
    position: absolute;
    right: -14px;
    bottom: 20px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    width: 230px;
    padding: 13px 14px;
    border: 1px solid rgba(55, 224, 176, 0.26);
    border-radius: 15px;
    background: rgba(9, 25, 29, 0.96);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    animation: float 6s ease-in-out infinite;
}

.toast-card .status-dot {
    width: 8px;
    height: 8px;
    margin-top: 5px;
    flex: 0 0 auto;
}

.toast-card div {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.toast-card strong {
    font-size: 0.75rem;
}

.toast-card span:not(.status-dot) {
    color: var(--muted);
    font-size: 0.68rem;
}

@keyframes float {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

.section {
    padding: 78px 0;
    border-top: 1px solid var(--line);
}

.section-head {
    max-width: 720px;
    margin-bottom: 34px;
}

.kicker {
    margin: 0 0 10px;
    color: var(--mint);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

h2 {
    margin: 0;
    font-size: clamp(1.9rem, 3.6vw, 3rem);
    font-weight: 720;
    letter-spacing: -0.04em;
    line-height: 1.12;
}

.section-head p {
    max-width: 650px;
    margin: 14px 0 0;
    color: var(--muted);
    font-size: 1.02rem;
}

.why-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 18px;
}

.story-card,
.side-card {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--panel);
}

.story-card {
    padding: 30px;
}

.story-card blockquote {
    margin: 0;
    font-size: clamp(1.2rem, 2.2vw, 1.7rem);
    font-weight: 600;
    letter-spacing: -0.025em;
    line-height: 1.35;
}

.story-card p {
    margin: 16px 0 0;
    color: var(--muted);
}

.story-tag {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    margin-bottom: 18px;
    color: var(--blue);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.story-tag svg {
    width: 16px;
    height: 16px;
}

.side-stack {
    display: grid;
    gap: 18px;
}

.side-card {
    padding: 22px;
}

.side-card .label {
    display: block;
    margin-bottom: 6px;
    color: var(--muted);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.side-card strong {
    display: block;
    font-size: 1.02rem;
    line-height: 1.4;
}

.side-card p {
    margin: 7px 0 0;
    color: var(--muted);
    font-size: 0.88rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.feature-card {
    position: relative;
    padding: 24px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: linear-gradient(180deg, rgba(14, 30, 40, 0.82), rgba(9, 20, 27, 0.82));
    overflow: hidden;
    transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.feature-card::after {
    content: "";
    position: absolute;
    top: -60px;
    right: -60px;
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(55, 224, 176, 0.12), transparent 68%);
    opacity: 0;
    transition: opacity 180ms ease;
}

.feature-card:hover {
    transform: translateY(-3px);
    border-color: var(--line-strong);
    background: linear-gradient(180deg, rgba(18, 38, 50, 0.9), rgba(10, 23, 31, 0.9));
}

.feature-card:hover::after {
    opacity: 1;
}

.feature-icon {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    margin-bottom: 18px;
    border: 1px solid rgba(55, 224, 176, 0.2);
    border-radius: 12px;
    background: var(--mint-soft);
    color: var(--mint);
}

.feature-icon svg {
    width: 20px;
    height: 20px;
}

.feature-card h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: -0.015em;
}

.feature-card p {
    margin: 8px 0 0;
    color: var(--muted);
    font-size: 0.9rem;
}

.feature-card code {
    padding: 1px 5px;
    border: 1px solid var(--line);
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.045);
    color: #cfe0e6;
    font-family: "Cascadia Code", "Consolas", monospace;
    font-size: 0.78em;
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.step {
    padding: 24px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.025);
}

.step-number {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    margin-bottom: 16px;
    border: 1px solid rgba(90, 168, 255, 0.28);
    border-radius: 10px;
    background: var(--blue-soft);
    color: var(--blue);
    font-size: 0.82rem;
    font-weight: 800;
}

.step h3 {
    margin: 0;
    font-size: 1rem;
}

.step p {
    margin: 7px 0 0;
    color: var(--muted);
    font-size: 0.9rem;
}

.terminal {
    margin-top: 18px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #071117;
    overflow: hidden;
}

.terminal-bar {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 11px 14px;
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.72rem;
}

.terminal-bar span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.16);
}

.terminal-bar span:first-child {
    background: #ff7d7d;
}

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

.terminal-bar span:nth-child(3) {
    background: var(--mint);
}

.terminal-bar em {
    margin-left: 7px;
    font-style: normal;
}

.terminal pre {
    margin: 0;
    padding: 18px;
    overflow-x: auto;
    color: #cfe0e6;
    font-family: "Cascadia Code", "Consolas", "SFMono-Regular", monospace;
    font-size: 0.86rem;
    line-height: 1.8;
}

.terminal .prompt {
    color: var(--mint);
}

.terminal .comment {
    color: #647e8b;
}

.download-card {
    position: relative;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 30px;
    align-items: center;
    padding: 36px;
    border: 1px solid rgba(55, 224, 176, 0.22);
    border-radius: 28px;
    background:
        radial-gradient(600px 240px at 82% 0%, rgba(90, 168, 255, 0.16), transparent 68%),
        linear-gradient(135deg, rgba(55, 224, 176, 0.11), rgba(9, 20, 27, 0.94) 52%);
    overflow: hidden;
}

.download-card::after {
    content: "";
    position: absolute;
    right: -100px;
    bottom: -170px;
    width: 420px;
    height: 420px;
    border: 1px solid rgba(55, 224, 176, 0.14);
    border-radius: 50%;
    box-shadow: 0 0 0 48px rgba(55, 224, 176, 0.035), 0 0 0 96px rgba(90, 168, 255, 0.025);
    pointer-events: none;
}

.download-copy {
    position: relative;
    z-index: 1;
}

.download-copy h2 {
    max-width: 600px;
}

.download-copy p {
    max-width: 620px;
    margin: 13px 0 0;
    color: var(--muted);
}

.download-actions {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-width: 210px;
}

.download-actions .button {
    width: 100%;
}

.download-note {
    margin: 14px 0 0;
    color: var(--muted);
    font-size: 0.78rem;
}

.spec-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 20px 0 0;
    padding: 0;
    list-style: none;
}

.spec-list li {
    padding: 5px 9px;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: rgba(255, 255, 255, 0.03);
    color: #c2d4dc;
    font-size: 0.75rem;
}

.faq-list {
    border-top: 1px solid var(--line);
}

.faq-item {
    border-bottom: 1px solid var(--line);
}

.faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 21px 0;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 650;
    list-style: none;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: "+";
    flex: 0 0 auto;
    color: var(--mint);
    font-size: 1.35rem;
    font-weight: 400;
    line-height: 1;
}

.faq-item[open] summary::after {
    content: "\2212";
}

.faq-item p {
    max-width: 820px;
    margin: -5px 0 22px;
    color: var(--muted);
    font-size: 0.94rem;
}

.site-footer {
    padding: 34px 0 44px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.82rem;
}

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

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

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

.footer-note {
    color: #647e8b;
}

@media (max-width: 980px) {
    .hero {
        padding-top: 70px;
    }

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

    .hero-visual {
        min-height: 0;
        margin-top: 20px;
    }

    .tray-card {
        transform: none;
    }

    .toast-card {
        right: 8px;
        bottom: 8px;
    }

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

    .download-card {
        grid-template-columns: 1fr;
    }

    .download-actions {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .download-actions .button {
        width: auto;
    }
}

@media (max-width: 700px) {
    .container {
        width: min(100% - 32px, 1120px);
    }

    .header-inner {
        min-height: 64px;
    }

    .nav {
        gap: 12px;
    }

    .nav a[href="#features"],
    .nav a[href="#how"],
    .nav a[href="#download"],
    .nav a[href="#faq"] {
        display: none;
    }

    .hero {
        padding: 56px 0 58px;
    }

    h1 {
        font-size: clamp(2.7rem, 13vw, 4rem);
    }

    .section {
        padding: 58px 0;
    }

    .feature-grid,
    .steps {
        grid-template-columns: 1fr;
    }

    .story-card,
    .download-card {
        padding: 24px;
    }

    .download-card {
        border-radius: 22px;
    }

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

    .download-actions .button {
        width: 100%;
    }

    .toast-card {
        position: relative;
        right: auto;
        bottom: auto;
        width: 100%;
        margin-top: 12px;
        animation: none;
    }

    .hero-visual {
        display: block;
    }

    .tray-card {
        margin: 0 auto;
    }

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

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}