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

:root {
    --accent: #5b6ef5;
    --accent-2: #a855f7;
    --bg1: #f3f5fc;
    --bg2: #eceef9;
    --card: #fff;
    --card-2: #f6f8fe;
    --text: #161a33;
    --head: #0d1027;
    --dim: #646c8c;
    --line: rgba(20, 30, 80, .09);
    --shadow: 0 10px 30px rgba(70, 90, 170, .1);
    --shadow-lg: 0 20px 50px rgba(70, 90, 170, .16);
    --ok: #10b981;
    --xianyu: #ffda44;
    --warn: #f59e0b;
    --hot: #ff8a3d;
    --danger: #ef4444;
    --code-bg: #eef0fb;
    --code-fg: #4a5dc7;
    --ring: rgba(91, 110, 245, .14);
    --hero-warm: rgba(255, 138, 61, .16);
    --theme-btn-gap: 45px
}

html[data-theme="dark"] {
    --accent: #7c8fff;
    --accent-2: #c084fc;
    --bg1: #0a0c1c;
    --bg2: #10132e;
    --card: #15182f;
    --card-2: #1c2040;
    --text: #e9ecfb;
    --head: #fff;
    --dim: #9aa2c8;
    --line: rgba(255, 255, 255, .08);
    --shadow: 0 10px 30px rgba(0, 0, 0, .35);
    --shadow-lg: 0 24px 60px rgba(0, 0, 0, .5);
    --ok: #34d399;
    --xianyu: #ffda44;
    --warn: #fbbf24;
    --hot: #fb923c;
    --danger: #fb7185;
    --code-bg: #1c2040;
    --code-fg: #a5b4fc;
    --ring: rgba(124, 143, 255, .2);
    --hero-warm: rgba(251, 146, 60, .2)
}

body {
    font-family: "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
    background: var(--bg1);
    color: var(--text);
    line-height: 1.7;
    transition: background .4s, color .4s
}

a {
    color: inherit
}

.bg {
    position: fixed;
    inset: 0;
    z-index: -2;
    background: var(--bg1)
}

.bg::before,
.bg::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    opacity: .5
}

.bg::before {
    width: 520px;
    height: 520px;
    background: var(--accent);
    top: -180px;
    right: -120px
}

.bg::after {
    width: 460px;
    height: 460px;
    background: var(--accent-2);
    bottom: -160px;
    left: -120px
}

.skip-link {
    position: absolute;
    left: -999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
    z-index: 100;
    padding: 8px 16px;
    background: var(--accent);
    color: #fff;
    border-radius: 0 0 8px 0;
    font-weight: 600;
    text-decoration: none
}

.skip-link:focus {
    left: 0;
    top: 0;
    width: auto;
    height: auto
}

nav {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    gap: 28px;
    justify-content: space-between;
    align-items: center;
    padding: 13px 12px 14px;
    background: linear-gradient(90deg, color-mix(in srgb, var(--card) 86%, transparent), color-mix(in srgb, var(--accent) 9%, var(--card)), color-mix(in srgb, var(--card) 86%, transparent));
    backdrop-filter: blur(14px);
    border-bottom: 1px solid color-mix(in srgb, var(--accent) 22%, var(--line));
    box-shadow: 0 12px 28px rgba(70, 90, 170, .1)
}

nav::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 0;
    width: min(720px, calc(100% - 32px));
    height: 3px;
    border-radius: 999px;
    transform: translateX(-50%);
    background: linear-gradient(90deg, transparent, var(--accent), var(--hot), var(--accent-2), transparent);
    pointer-events: none;
    opacity: .9
}

nav a {
    padding: 8px 16px;
    border-radius: 50px;
    text-decoration: none;
    color: var(--dim);
    font-weight: 600;
    font-size: .9rem;
    transition: .2s;
    border: 1px solid transparent
}

nav a:hover {
    color: var(--text);
    background: var(--card-2);
    border-color: var(--line)
}

nav a.is-active {
    color: #fff;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    border-color: transparent;
    box-shadow: 0 8px 20px var(--ring)
}

.theme-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: 50px;
    background: var(--card-2);
    border: 1px solid var(--line);
    color: var(--text);
    font-weight: 600;
    font-size: .88rem;
    cursor: pointer;
    transition: .25s;
    margin-left: var(--theme-btn-gap)
}

.theme-btn:hover {
    border-color: var(--accent);
    transform: translateY(-1px)
}

.kiro-logo-link {
    padding: 5px !important;
    width: 45px;
    height: 45px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: none
}

.kiro-logo-link:hover {
    background-color: transparent;
    border-color: transparent;
}

.kiro-logo-link img {
    width: 36px;
    height: 36px;
    object-fit: contain;
    display: block
}

.nav-links {
    display: flex;
    gap: 28px;
    align-items: center
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 11px 20px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 650;
    font-size: .9rem;
    transition: .25s;
    cursor: pointer;
    border: none;
    width: 100%
}

.btn.primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #fff;
    box-shadow: 0 8px 20px var(--ring)
}

.btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 26px var(--ring)
}

.btn.ghost {
    background: var(--card-2);
    color: var(--text);
    border: 1px solid var(--line)
}

.btn.ghost:hover {
    border-color: var(--accent)
}

code {
    background: var(--code-bg);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: .86em;
    color: var(--code-fg);
    font-weight: 600
}

footer {
    text-align: center;
    padding: 30px 24px;
    color: var(--dim);
    font-size: .85rem;
    border-top: 1px solid var(--line)
}

footer b {
    color: var(--head)
}

.footer-link {
    display: block;
    width: fit-content;
    margin: 12px auto 0;
    padding: 4px 12px;
    border-radius: 999px;
    color: var(--accent);
    background: color-mix(in srgb, var(--accent) 8%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent) 20%, var(--line));
    text-decoration: none;
    font-weight: 800
}

.footer-link:hover {
    border-color: var(--accent);
    color: var(--accent)
}

@media (max-width: 640px) {
    nav {
        padding: 10px 12px 12px;
        gap: 8px
    }

    .nav-links {
        gap: 8px;
        overflow-x: auto;
        flex: 1;
        justify-content: center
    }

    nav a,
    .theme-btn {
        flex: none
    }

    .theme-btn {
        --theme-btn-gap: 4px
    }
}