:root {
    --display-font: "Avenir Next", "PingFang SC", "Segoe UI", sans-serif;
    --body-font: "IBM Plex Sans", "PingFang SC", "Inter", sans-serif;
    --mono-font: "JetBrains Mono", "SF Mono", "Menlo", monospace;

    --lp-bg: #f6efe6;
    --lp-bg-end: #fffaf5;
    --lp-panel: rgba(255, 252, 246, 0.78);
    --lp-panel-strong: rgba(255, 255, 255, 0.92);
    --lp-frost: rgba(255, 255, 255, 0.58);
    --lp-line: rgba(17, 22, 26, 0.08);
    --lp-line-strong: rgba(17, 22, 26, 0.14);
    --lp-ink: #11161a;
    --lp-muted: #5f676d;
    --lp-soft: #8c969f;
    --lp-accent: #0f7c74;
    --lp-accent-strong: #0a5e63;
    --lp-accent-soft: rgba(15, 124, 116, 0.14);
    --lp-warm: #ff8b2c;
    --lp-warm-soft: rgba(255, 139, 44, 0.16);
    --lp-rose: #ea5c4c;
    --lp-shadow: 0 14px 40px rgba(33, 35, 38, 0.08);
    --lp-shadow-lg: 0 28px 90px rgba(33, 35, 38, 0.14);
}

[data-theme="dark"] {
    --lp-bg: #0d1113;
    --lp-bg-end: #070b0d;
    --lp-panel: rgba(18, 23, 27, 0.78);
    --lp-panel-strong: rgba(20, 26, 31, 0.92);
    --lp-frost: rgba(255, 255, 255, 0.03);
    --lp-line: rgba(255, 255, 255, 0.08);
    --lp-line-strong: rgba(255, 255, 255, 0.16);
    --lp-ink: #f4f6f8;
    --lp-muted: #b8c0c8;
    --lp-soft: #7f8a93;
    --lp-accent: #54d1c2;
    --lp-accent-strong: #3bb2b8;
    --lp-accent-soft: rgba(84, 209, 194, 0.16);
    --lp-warm: #ffb15a;
    --lp-warm-soft: rgba(255, 177, 90, 0.16);
    --lp-rose: #ff7a68;
    --lp-shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
    --lp-shadow-lg: 0 28px 90px rgba(0, 0, 0, 0.45);
}

@media (prefers-color-scheme: dark) {
    [data-theme="auto"] {
        --lp-bg: #0d1113;
        --lp-bg-end: #070b0d;
        --lp-panel: rgba(18, 23, 27, 0.78);
        --lp-panel-strong: rgba(20, 26, 31, 0.92);
        --lp-frost: rgba(255, 255, 255, 0.03);
        --lp-line: rgba(255, 255, 255, 0.08);
        --lp-line-strong: rgba(255, 255, 255, 0.16);
        --lp-ink: #f4f6f8;
        --lp-muted: #b8c0c8;
        --lp-soft: #7f8a93;
        --lp-accent: #54d1c2;
        --lp-accent-strong: #3bb2b8;
        --lp-accent-soft: rgba(84, 209, 194, 0.16);
        --lp-warm: #ffb15a;
        --lp-warm-soft: rgba(255, 177, 90, 0.16);
        --lp-rose: #ff7a68;
        --lp-shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
        --lp-shadow-lg: 0 28px 90px rgba(0, 0, 0, 0.45);
    }
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body.lp-public-body {
    font-family: var(--body-font);
    color: var(--lp-ink);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    background:
        radial-gradient(circle at 18% 0%, rgba(255, 139, 44, 0.18) 0%, transparent 34%),
        radial-gradient(circle at 100% 12%, rgba(15, 124, 116, 0.16) 0%, transparent 32%),
        linear-gradient(180deg, var(--lp-bg) 0%, var(--lp-bg-end) 100%);
}

body.lp-public-body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
        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: 32px 32px;
    opacity: 0.3;
    z-index: -2;
}

body.lp-public-body::after {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.92' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.08'/%3E%3C/svg%3E");
    mix-blend-mode: soft-light;
    opacity: 0.35;
    z-index: -1;
}

/* ===== Dark Mode — Body & Component Overrides ===== */
[data-theme="dark"] body.lp-public-body {
    background:
        radial-gradient(circle at 0% 0%, rgba(255, 177, 90, 0.16), transparent 30%),
        radial-gradient(circle at 100% 8%, rgba(84, 209, 194, 0.16), transparent 32%),
        radial-gradient(circle at 52% 100%, rgba(255, 122, 104, 0.14), transparent 24%),
        linear-gradient(180deg, #0d1113 0%, #070b0d 100%);
}

[data-theme="dark"] .lp-kicker,
[data-theme="dark"] .hero-kicker {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .lp-chip,
[data-theme="dark"] .hero-meta span {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .lp-chip code,
[data-theme="dark"] .hero-meta code {
    color: var(--lp-accent);
}

[data-theme="dark"] .lp-hero {
    background:
        radial-gradient(circle at 100% 0%, rgba(84, 209, 194, 0.1), transparent 34%),
        radial-gradient(circle at 0% 50%, rgba(255, 177, 90, 0.1), transparent 34%),
        var(--lp-panel);
}

[data-theme="dark"] .lp-article table {
    background: rgba(255, 255, 255, 0.02);
    border-color: rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .lp-article th {
    background: rgba(255, 255, 255, 0.04);
}

[data-theme="dark"] .lp-back,
[data-theme="dark"] .back {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .timeline-body {
    border-color: rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .timeline-item:first-child .timeline-body {
    border-color: rgba(84, 209, 194, 0.2);
    box-shadow: var(--lp-shadow), 0 0 0 1px var(--lp-accent-soft);
}

[data-theme="dark"] .timeline::before {
    background: linear-gradient(180deg, var(--lp-accent) 0%, rgba(255, 255, 255, 0.04) 100%);
}

[data-theme="dark"] .change-group-title.improved {
    background: rgba(63, 98, 255, 0.1);
    color: #8fb0ff;
}

[data-theme="dark"] .change-group-title.fixed {
    background: rgba(255, 139, 44, 0.1);
    color: var(--lp-warm);
}

@media (prefers-color-scheme: dark) {
    [data-theme="auto"] body.lp-public-body {
        background:
            radial-gradient(circle at 0% 0%, rgba(255, 177, 90, 0.16), transparent 30%),
            radial-gradient(circle at 100% 8%, rgba(84, 209, 194, 0.16), transparent 32%),
            radial-gradient(circle at 52% 100%, rgba(255, 122, 104, 0.14), transparent 24%),
            linear-gradient(180deg, #0d1113 0%, #070b0d 100%);
    }

    [data-theme="auto"] .lp-kicker,
    [data-theme="auto"] .hero-kicker {
        background: rgba(255, 255, 255, 0.04);
        border-color: rgba(255, 255, 255, 0.08);
    }

    [data-theme="auto"] .lp-chip,
    [data-theme="auto"] .hero-meta span {
        background: rgba(255, 255, 255, 0.04);
        border-color: rgba(255, 255, 255, 0.08);
    }

    [data-theme="auto"] .lp-chip code,
    [data-theme="auto"] .hero-meta code {
        color: var(--lp-accent);
    }

    [data-theme="auto"] .lp-hero {
        background:
            radial-gradient(circle at 100% 0%, rgba(84, 209, 194, 0.1), transparent 34%),
            radial-gradient(circle at 0% 50%, rgba(255, 177, 90, 0.1), transparent 34%),
            var(--lp-panel);
    }

    [data-theme="auto"] .lp-article table {
        background: rgba(255, 255, 255, 0.02);
        border-color: rgba(255, 255, 255, 0.06);
    }

    [data-theme="auto"] .lp-article th {
        background: rgba(255, 255, 255, 0.04);
    }

    [data-theme="auto"] .lp-back,
    [data-theme="auto"] .back {
        background: rgba(255, 255, 255, 0.04);
        border-color: rgba(255, 255, 255, 0.08);
    }

    [data-theme="auto"] .timeline-body {
        border-color: rgba(255, 255, 255, 0.06);
    }

    [data-theme="auto"] .timeline-item:first-child .timeline-body {
        border-color: rgba(84, 209, 194, 0.2);
        box-shadow: var(--lp-shadow), 0 0 0 1px var(--lp-accent-soft);
    }

    [data-theme="auto"] .timeline::before {
        background: linear-gradient(180deg, var(--lp-accent) 0%, rgba(255, 255, 255, 0.04) 100%);
    }

    [data-theme="auto"] .change-group-title.improved {
        background: rgba(63, 98, 255, 0.1);
        color: #8fb0ff;
    }

    [data-theme="auto"] .change-group-title.fixed {
        background: rgba(255, 139, 44, 0.1);
        color: var(--lp-warm);
    }
}

.lp-page-shell {
    position: relative;
    z-index: 1;
}

.lp-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 18px 24px 0;
}

.lp-nav-inner {
    max-width: 1240px;
    margin: 0 auto;
    min-height: 72px;
    border-radius: 999px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 0 28px;
    border: 1px solid rgba(255, 255, 255, 0.46);
    background: rgba(255, 255, 255, 0.56);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.06);
    backdrop-filter: blur(18px) saturate(180%);
    -webkit-backdrop-filter: blur(18px) saturate(180%);
}

[data-theme="dark"] .lp-nav-inner {
    background: rgba(13, 17, 19, 0.68);
    border-color: rgba(255, 255, 255, 0.08);
}

@media (prefers-color-scheme: dark) {
    [data-theme="auto"] .lp-nav-inner {
        background: rgba(13, 17, 19, 0.68);
        border-color: rgba(255, 255, 255, 0.08);
    }
}

.lp-brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    white-space: nowrap;
    color: var(--lp-ink);
}

.lp-brand-mark {
    width: 30px;
    height: 30px;
    object-fit: contain;
    flex: 0 0 auto;
}

.lp-brand-text {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.lp-brand-name {
    font-family: var(--display-font);
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.lp-brand-sub {
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--lp-soft);
}

.lp-nav-right,
.lp-nav-links {
    display: flex;
    align-items: center;
    gap: 14px;
}

.lp-nav-links {
    gap: 20px;
    flex-wrap: wrap;
}

.lp-nav-link {
    font-size: 13px;
    color: var(--lp-muted);
    text-decoration: none;
}

.lp-nav-link:hover {
    color: var(--lp-ink);
    opacity: 1;
}

.lp-theme-switcher {
    display: inline-flex;
    align-items: center;
    padding: 4px;
    border-radius: 999px;
    border: 1px solid var(--lp-line);
    background: rgba(255, 255, 255, 0.66);
}

[data-theme="dark"] .lp-theme-switcher {
    background: rgba(255, 255, 255, 0.03);
}

@media (prefers-color-scheme: dark) {
    [data-theme="auto"] .lp-theme-switcher {
        background: rgba(255, 255, 255, 0.03);
    }
}

.lp-theme-switcher button {
    width: 34px;
    height: 34px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 999px;
    background: transparent;
    color: var(--lp-soft);
    cursor: pointer;
    transition: color 0.2s ease, background 0.2s ease;
}

.lp-theme-switcher button:hover {
    color: var(--lp-ink);
    background: var(--lp-accent-soft);
}

.lp-theme-switcher button.active {
    background: var(--lp-accent);
    color: #fff;
}

.lp-panel {
    background: var(--lp-panel);
    border: 1px solid var(--lp-line);
    border-radius: 30px;
    box-shadow: var(--lp-shadow);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.lp-changelog-shell {
    max-width: 1180px;
    margin: 0 auto;
    padding: 36px 24px 88px;
}

.lp-legal-shell {
    max-width: 1120px;
    margin: 0 auto;
    padding: 32px 24px 84px;
}

.lp-hero {
    padding: 34px;
    background:
        radial-gradient(circle at 100% 0%, rgba(15, 124, 116, 0.16), transparent 34%),
        radial-gradient(circle at 0% 50%, rgba(255, 139, 44, 0.18), transparent 34%),
        var(--lp-panel);
}

.lp-kicker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    border-radius: 999px;
    border: 1px solid var(--lp-line);
    background: var(--lp-frost);
    font-family: var(--mono-font);
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--lp-accent);
    margin-bottom: 18px;
}

.lp-kicker::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--lp-warm);
    box-shadow: 0 0 0 6px var(--lp-warm-soft);
}

.lp-hero-title {
    font-family: var(--display-font);
    font-size: clamp(38px, 7vw, 68px);
    line-height: 0.98;
    letter-spacing: -0.06em;
    margin: 0 0 14px;
}

.lp-hero-copy {
    max-width: 720px;
    font-size: 16px;
    line-height: 1.76;
    color: var(--lp-muted);
}

.lp-hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 22px;
}

.lp-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border-radius: 999px;
    background: var(--lp-frost);
    border: 1px solid var(--lp-line);
    font-size: 12px;
    line-height: 1.5;
    color: var(--lp-muted);
}

.lp-chip code {
    font-family: var(--mono-font);
    font-size: 12px;
    color: var(--lp-accent-strong);
}

.lp-article {
    padding: 34px;
}

.lp-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
    padding: 10px 14px;
    border-radius: 999px;
    border: 1px solid var(--lp-line);
    background: var(--lp-frost);
    font-size: 13px;
    color: var(--lp-muted);
    text-decoration: none;
}

.lp-back:hover {
    color: var(--lp-ink);
    opacity: 1;
}

.lp-article h1 {
    font-family: var(--display-font);
    font-size: 34px;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.04em;
}

.lp-meta {
    font-size: 13px;
    color: var(--lp-soft);
    margin-bottom: 32px;
    padding-bottom: 22px;
    border-bottom: 1px solid var(--lp-line);
}

.lp-article h2 {
    font-family: var(--display-font);
    font-size: 22px;
    font-weight: 600;
    margin: 34px 0 12px;
    padding-top: 18px;
    border-top: 1px solid var(--lp-line);
    letter-spacing: -0.03em;
}

.lp-article h2:first-of-type {
    border-top: 0;
    padding-top: 0;
}

.lp-article p,
.lp-article li {
    font-size: 15px;
    line-height: 1.84;
    color: var(--lp-muted);
    margin-bottom: 8px;
}

.lp-article ul,
.lp-article ol {
    padding-left: 24px;
    margin-bottom: 12px;
}

.lp-article a,
.lp-footer a {
    color: var(--lp-accent);
    text-decoration: none;
}

.lp-article table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 14px 0;
    font-size: 14px;
    overflow: hidden;
    border-radius: 20px;
    border: 1px solid var(--lp-line);
    background: color-mix(in srgb, var(--lp-panel-strong) 80%, transparent);
}

.lp-article th,
.lp-article td {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 1px solid var(--lp-line);
    border-right: 1px solid var(--lp-line);
    color: var(--lp-muted);
}

.lp-article th {
    background: color-mix(in srgb, var(--lp-ink) 3%, transparent);
    font-weight: 600;
    font-size: 13px;
    color: var(--lp-soft);
}

.lp-article tr:last-child td {
    border-bottom: 0;
}

.lp-article tr td:last-child,
.lp-article tr th:last-child {
    border-right: 0;
}

.lp-footer {
    max-width: 1180px;
    margin: 0 auto 44px;
    padding: 0 24px;
}

.lp-footer-inner {
    padding: 24px 30px;
}

.lp-footer-top,
.lp-footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    flex-wrap: wrap;
}

.lp-footer-top {
    padding-bottom: 18px;
    border-bottom: 1px solid var(--lp-line);
    margin-bottom: 18px;
}

.lp-footer-links {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
}

.lp-footer-links a {
    font-size: 13px;
    color: var(--lp-muted);
}

.lp-footer-links a:hover {
    color: var(--lp-ink);
    opacity: 1;
}

.lp-footer-note {
    font-size: 12px;
    line-height: 1.8;
    color: var(--lp-muted);
}

.lp-footer-note strong {
    color: var(--lp-ink);
}

@media (max-width: 900px) {
    .lp-nav {
        padding-top: 10px;
        padding-left: 18px;
        padding-right: 18px;
    }

    .lp-nav-inner {
        border-radius: 28px;
    }

    .lp-changelog-shell,
    .lp-legal-shell {
        padding-left: 18px;
        padding-right: 18px;
    }

    .lp-footer {
        padding-left: 18px;
        padding-right: 18px;
    }
}

@media (max-width: 720px) {

    /* --- 1. Nav: 与内容区等宽对齐 --- */
    .lp-nav {
        padding: 10px 12px 0;
    }

    .lp-nav-inner {
        min-height: auto;
        padding: 14px;
        flex-wrap: wrap;
        border-radius: 22px;
    }

    .lp-nav-right {
        width: 100%;
        justify-content: space-between;
        flex-wrap: wrap;
    }

    .lp-nav-links {
        gap: 14px;
    }

    .lp-theme-switcher {
        display: none;
    }

    /* --- 2. Content Shells: 统一水平 padding --- */
    .lp-changelog-shell,
    .lp-legal-shell {
        padding-left: 12px;
        padding-right: 12px;
    }

    /* --- 3. 内容组件: 统一内部 padding --- */
    .lp-hero,
    .lp-article,
    .lp-footer-inner {
        padding-left: 18px;
        padding-right: 18px;
    }

    .lp-panel {
        border-radius: 22px;
    }

    /* --- 4. Footer: 与 nav 等宽对齐 --- */
    .lp-footer {
        padding-left: 12px;
        padding-right: 12px;
    }

    .lp-article table {
        display: block;
        overflow-x: auto;
    }
}

/* ===== Changelog — Timeline ===== */

.timeline {
    position: relative;
    padding-left: 76px;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 26px;
    top: 12px;
    bottom: 14px;
    width: 2px;
    background: linear-gradient(180deg, var(--lp-accent) 0%, rgba(17, 22, 26, 0.06) 100%);
}

.timeline-item {
    position: relative;
    margin-bottom: 28px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -58px;
    top: 18px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--lp-accent);
    border: 4px solid var(--lp-panel-strong);
    box-shadow: 0 0 0 2px var(--lp-accent-soft);
}

.timeline-item:not(:first-child) .timeline-dot {
    background: var(--lp-warm);
    box-shadow: 0 0 0 2px var(--lp-warm-soft);
}

.timeline-date {
    margin-bottom: 10px;
    font-family: var(--mono-font);
    font-size: 12px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--lp-accent);
}

.timeline-item:not(:first-child) .timeline-date {
    color: var(--lp-soft);
}

.timeline-version {
    font-family: var(--display-font);
    font-size: 28px;
    line-height: 1.04;
    letter-spacing: -0.045em;
    margin-bottom: 14px;
    color: var(--lp-ink);
}

.timeline-body {
    padding: 26px 28px;
    background: var(--lp-panel);
    border: 1px solid var(--lp-line);
    border-radius: 26px;
    box-shadow: var(--lp-shadow);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.timeline-item:first-child .timeline-body {
    border-color: rgba(15, 124, 116, 0.28);
    box-shadow: var(--lp-shadow), 0 0 0 1px var(--lp-accent-soft);
}

.change-group {
    margin-bottom: 16px;
}

.change-group:last-child {
    margin-bottom: 0;
}

.change-group-title {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    border-radius: 999px;
    margin-bottom: 12px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.change-group-title.new {
    background: rgba(15, 124, 116, 0.12);
    color: var(--lp-accent);
}

.change-group-title.improved {
    background: rgba(63, 98, 255, 0.12);
    color: #335cff;
}

.change-group-title.fixed {
    background: rgba(255, 139, 44, 0.14);
    color: #c56a12;
}

.change-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 10px;
}

.change-list li {
    position: relative;
    padding-left: 18px;
    font-size: 14px;
    line-height: 1.8;
    color: var(--lp-muted);
}

.change-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 10px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--lp-accent);
}

/* --- Timeline responsive: tablet --- */
@media (max-width: 900px) {
    .timeline {
        padding-left: 54px;
    }

    .timeline-dot {
        left: -40px;
    }

    .timeline::before {
        left: 24px;
    }
}

/* --- Timeline responsive: mobile --- */
@media (max-width: 720px) {
    .timeline-body {
        padding-left: 18px;
        padding-right: 18px;
    }

    .timeline {
        padding-left: 0;
    }

    .timeline::before,
    .timeline-dot {
        display: none;
    }

    .timeline-version {
        font-size: 22px;
    }
}