:root {
    --getfree-ink: #0f172a;
    --getfree-muted: #64748b;
    --getfree-line: rgba(148, 163, 184, 0.18);
    --getfree-sky: #0284c7;
    --getfree-cyan: #06b6d4;
    --getfree-surface: rgba(255, 255, 255, 0.88);
    --getfree-shadow: 0 18px 50px rgba(15, 23, 42, 0.07);
    --getfree-shadow-hover: 0 24px 64px rgba(14, 116, 144, 0.12);
}

html {
    scroll-behavior: smooth;
}

body.getfree-site {
    min-height: 100vh;
    background:
        radial-gradient(circle at 6% 2%, rgba(14, 165, 233, 0.08), transparent 24rem),
        radial-gradient(circle at 95% 22%, rgba(34, 211, 238, 0.055), transparent 28rem),
        #f8fafc;
    color: var(--getfree-muted);
}

body.getfree-site::before {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background-image: linear-gradient(rgba(148, 163, 184, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 163, 184, 0.035) 1px, transparent 1px);
    background-size: 48px 48px;
    content: "";
    -webkit-mask-image: linear-gradient(to bottom, black, transparent 42rem);
    mask-image: linear-gradient(to bottom, black, transparent 42rem);
}

body.getfree-site > nav,
body.getfree-site > header {
    transition: box-shadow 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

body.getfree-site > nav.getfree-nav-scrolled,
body.getfree-site > header.getfree-nav-scrolled {
    border-color: rgba(148, 163, 184, 0.2);
    background-color: rgba(255, 255, 255, 0.94);
    box-shadow: 0 10px 32px rgba(15, 23, 42, 0.07);
}

body.getfree-site main {
    position: relative;
}

body.getfree-site a,
body.getfree-site button {
    -webkit-tap-highlight-color: transparent;
}

body.getfree-site a:focus-visible,
body.getfree-site button:focus-visible {
    outline: 3px solid rgba(14, 165, 233, 0.3);
    outline-offset: 3px;
}

body.getfree-site img {
    background-color: #f1f5f9;
}

body.getfree-site footer {
    position: relative;
    overflow: hidden;
}

body.getfree-site footer::before {
    position: absolute;
    top: 0;
    left: 50%;
    width: min(76rem, 88vw);
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(14, 165, 233, 0.38), transparent);
    content: "";
    transform: translateX(-50%);
}

.getfree-feature-grid > div:first-child a {
    min-height: 24rem;
    border-radius: 1.5rem;
    box-shadow: 0 26px 70px rgba(15, 23, 42, 0.18);
}

.getfree-feature-grid > div:first-child a::after {
    position: absolute;
    inset: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 1rem;
    content: "";
    pointer-events: none;
}

.getfree-editorial-list > div > a {
    border: 1px solid rgba(226, 232, 240, 0.8) !important;
    background: var(--getfree-surface);
    box-shadow: 0 8px 26px rgba(15, 23, 42, 0.035);
    backdrop-filter: blur(12px);
}

.getfree-editorial-list > div > a:hover {
    border-color: rgba(14, 165, 233, 0.22) !important;
    box-shadow: var(--getfree-shadow-hover);
    transform: translateY(-2px);
}

.getfree-sidebar-card {
    border-color: var(--getfree-line) !important;
    background: var(--getfree-surface) !important;
    box-shadow: 0 10px 34px rgba(15, 23, 42, 0.045) !important;
    backdrop-filter: blur(14px);
}

.getfree-page-hero {
    isolation: isolate;
}

.getfree-page-hero::after {
    position: absolute;
    right: -5rem;
    bottom: -8rem;
    z-index: -1;
    width: 20rem;
    height: 20rem;
    border: 1px solid rgba(14, 165, 233, 0.13);
    border-radius: 999px;
    content: "";
}

.getfree-back-to-top {
    position: fixed;
    right: max(1rem, env(safe-area-inset-right));
    bottom: max(1rem, env(safe-area-inset-bottom));
    z-index: 60;
    display: grid;
    width: 2.75rem;
    height: 2.75rem;
    place-items: center;
    border: 1px solid rgba(148, 163, 184, 0.22);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.9);
    color: #475569;
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.12);
    opacity: 0;
    transform: translateY(10px);
    pointer-events: none;
    backdrop-filter: blur(12px);
    transition: opacity 180ms ease, transform 180ms ease, color 180ms ease, background-color 180ms ease;
}

.getfree-back-to-top.is-visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.getfree-back-to-top:hover {
    border-color: transparent;
    background: linear-gradient(135deg, var(--getfree-sky), var(--getfree-cyan));
    color: white;
}

.article-body :is(pre, code) {
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.article-body pre {
    overflow-x: auto;
    border: 1px solid rgba(51, 65, 85, 0.7);
    border-radius: 1rem;
    background: #0f172a !important;
    box-shadow: 0 16px 34px rgba(15, 23, 42, 0.15);
}

.article-body table {
    display: block;
    width: 100%;
    overflow-x: auto;
    white-space: nowrap;
}

.article-body :is(h2, h3) {
    scroll-margin-top: 6rem;
}

.getfree-article-layout {
    grid-template-columns: minmax(0, 1fr);
}

.getfree-article-page .getfree-article-main {
    width: 100%;
    margin-inline: auto;
}

.getfree-article-layout > article,
.getfree-article-aside {
    min-width: 0;
}

.getfree-article-page .getfree-reading-card {
    border: 1px solid var(--getfree-line);
    border-radius: 0.75rem;
    background: var(--getfree-surface);
    box-shadow: var(--getfree-shadow);
}

.getfree-article-page .getfree-reading-inner {
    display: flex;
    flex-direction: column;
}

.getfree-article-page .getfree-reading-inner > header {
    order: -1;
}

.getfree-article-page .getfree-reading-inner h1 {
    color: var(--getfree-ink);
    font-size: clamp(2rem, 3vw, 2.8rem);
    line-height: 1.22;
}

.getfree-article-page .getfree-article-deck {
    color: #52636b;
    font-size: 1.08rem;
    line-height: 1.75;
}

.getfree-article-page .article-body {
    color: #33434b;
    font-size: 1.08rem;
    line-height: 1.85;
}

.getfree-article-page .article-body p {
    color: #33434b;
    line-height: 1.85;
}

.getfree-article-page .article-body h2 {
    margin-top: 2.2em;
    padding-top: 0.85em;
    border-top: 1px solid var(--getfree-line);
    color: var(--getfree-ink);
    font-size: clamp(1.35rem, 2vw, 1.55rem);
    line-height: 1.4;
}

.getfree-article-page .article-body h3 {
    color: var(--getfree-ink);
    font-size: 1.2rem;
    line-height: 1.45;
}

.getfree-article-page .article-body strong {
    color: var(--getfree-ink);
}

@media (min-width: 1024px) {
    .getfree-article-layout {
        grid-template-columns: minmax(0, 1fr) 17.5rem;
        align-items: start;
    }

    .getfree-article-layout > article {
        grid-column: 1;
        grid-row: 1;
    }

    .getfree-article-aside {
        grid-column: 2;
        grid-row: 1;
    }
}

@media (max-width: 1023px) {
    .getfree-feature-grid > div:first-child a {
        min-height: 0;
    }
}

@media (max-width: 767px) {
    body.getfree-site::before {
        background-size: 32px 32px;
        opacity: 0.7;
    }
}

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

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

/* 新版编辑式视觉系统：保留 SiteManager 模块节点与广告容器，仅统一页面呈现。 */
:root {
    --getfree-ink: #14222b;
    --getfree-muted: #66737a;
    --getfree-line: #d7dfdf;
    --getfree-sky: #006f80;
    --getfree-cyan: #02b5c7;
    --getfree-paper: #f6f5f0;
    --getfree-surface: #fffefa;
    --getfree-shadow: 0 12px 40px rgba(20, 34, 43, 0.055);
    --getfree-shadow-hover: 0 22px 48px rgba(20, 34, 43, 0.11);
}

body.getfree-site {
    background: var(--getfree-paper) !important;
    color: var(--getfree-ink);
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
}

body.getfree-site::before {
    display: none;
}

body.getfree-site :is(h1, h2, h3, h4, h5) {
    color: var(--getfree-ink);
    letter-spacing: -0.035em;
}

body.getfree-site > :is(nav, header) {
    background: rgba(255, 254, 250, 0.96) !important;
    border-color: var(--getfree-line) !important;
    box-shadow: none !important;
}

body.getfree-site > :is(nav, header) > div:first-child {
    max-width: 82rem;
}

body.getfree-site > :is(nav, header) a[href="/"] :is(span, strong).bg-gradient-to-r,
body.getfree-site footer .bg-gradient-to-r {
    background: none !important;
    color: var(--getfree-ink) !important;
    -webkit-text-fill-color: var(--getfree-ink);
    letter-spacing: -0.065em;
}

body.getfree-site > :is(nav, header) [data-sitemanager-module="category-nav"] a,
body.getfree-site > :is(nav, header) a[href="/"] {
    color: var(--getfree-ink);
}

body.getfree-site > :is(nav, header) [data-sitemanager-module="category-nav"] a:hover,
body.getfree-site a:hover {
    color: var(--getfree-sky);
}

body.getfree-site [data-getfree-mobile-menu]:not(.hidden) {
    background: var(--getfree-surface);
}

body.getfree-site main {
    max-width: 82rem;
}

body.getfree-site main > nav[aria-label="面包屑"],
body.getfree-site main nav[aria-label="Breadcrumb"],
body.getfree-site main [data-sitemanager-module="breadcrumb"] {
    color: var(--getfree-muted);
    font-size: 0.75rem;
    letter-spacing: 0.03em;
}

body.getfree-site a:focus-visible,
body.getfree-site button:focus-visible {
    outline: 2px solid var(--getfree-cyan);
    outline-offset: 3px;
}

body.getfree-site img {
    background-color: #e8ece9;
}

body.getfree-site img[src="/assets/logo.svg"] {
    background-color: transparent;
}

.getfree-section-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 0 0 1rem;
    padding-top: 2.1rem;
    color: var(--getfree-ink);
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.15em;
}

.getfree-home > .getfree-section-heading:first-of-type {
    padding-top: 1rem;
}

.getfree-section-heading span:first-child {
    color: var(--getfree-sky);
    font-size: 0.65rem;
}

.getfree-article-tags svg {
    flex-shrink: 0;
}

.getfree-article-tags-text {
    display: block;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.getfree-article-tags-text > span {
    margin-right: 0.25em;
    white-space: nowrap;
}

.getfree-feature-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) !important;
    gap: 0.85rem !important;
    margin-bottom: 2.5rem !important;
}

.getfree-feature-grid > * {
    min-width: 0;
}

.getfree-feature-grid > div:first-child a {
    display: block;
    width: 100%;
    min-width: 0;
    min-height: 19rem;
    aspect-ratio: 16 / 10;
    border: 0 !important;
    border-radius: 0.7rem !important;
    box-shadow: none !important;
}

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

.getfree-feature-secondary > * {
    min-width: 0;
}

.getfree-feature-secondary a {
    display: block;
    width: 100%;
    min-width: 0;
}

.getfree-feature-grid > div:first-child a::after {
    inset: 0.8rem;
    border-radius: 0.2rem;
}

.getfree-feature-grid > div:first-child a > div:nth-of-type(2) {
    background: linear-gradient(0deg, rgba(3, 16, 24, 0.96), rgba(3, 16, 24, 0.02) 80%);
}

.getfree-feature-grid > div:first-child h2 {
    color: white;
    font-size: clamp(1.75rem, 3vw, 2.9rem);
    text-align: left;
}

.getfree-feature-grid > div:first-child p {
    margin-left: 0;
    text-align: left;
}

.getfree-feature-grid > div:last-child a {
    border: 0 !important;
    border-radius: 0.5rem !important;
}

.getfree-feature-grid > div:last-child h3 {
    font-size: clamp(0.75rem, 1vw, 0.9rem);
}

@media (min-width: 1024px) {
    .getfree-feature-grid {
        grid-template-columns: minmax(0, 1.85fr) minmax(0, 1fr) !important;
        align-items: stretch;
    }

    .getfree-feature-grid > div:first-child {
        grid-column: auto !important;
    }

    .getfree-feature-grid > div:first-child a {
        height: 100%;
        min-height: 0;
        aspect-ratio: auto !important;
    }
}

.getfree-home > .sticky {
    border: 1px solid var(--getfree-line) !important;
    border-radius: 0.35rem;
    background: rgba(255, 254, 250, 0.97) !important;
    box-shadow: 0 8px 24px rgba(20, 34, 43, 0.05);
}

.getfree-editorial-list > [data-sitemanager-loop="article-item"] > a,
.getfree-editorial-list > div > a,
body.getfree-site [data-sitemanager-module="article-list"] > article,
body.getfree-site [data-sitemanager-module="tag-article-list"] > article,
body.getfree-site [data-sitemanager-module="archive-article-list"] > article,
body.getfree-site [data-sitemanager-module="special-topic-article-list"] > article {
    border: 1px solid var(--getfree-line) !important;
    border-radius: 0.55rem !important;
    background: var(--getfree-surface) !important;
    box-shadow: none !important;
    transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.getfree-editorial-list > div > a:hover,
body.getfree-site [data-sitemanager-module="article-list"] > article:hover,
body.getfree-site [data-sitemanager-module="tag-article-list"] > article:hover,
body.getfree-site [data-sitemanager-module="archive-article-list"] > article:hover,
body.getfree-site [data-sitemanager-module="special-topic-article-list"] > article:hover {
    border-color: var(--getfree-cyan) !important;
    box-shadow: var(--getfree-shadow-hover) !important;
    transform: translateY(-2px);
}

.getfree-editorial-list > div > a img,
body.getfree-site [data-sitemanager-module="article-list"] article img,
body.getfree-site [data-sitemanager-module="tag-article-list"] article img,
body.getfree-site [data-sitemanager-module="archive-article-list"] article img {
    border-radius: 0.2rem;
}

.getfree-editorial-list h2,
.getfree-editorial-list h3,
body.getfree-site [data-sitemanager-module="article-list"] h3,
body.getfree-site [data-sitemanager-module="tag-article-list"] h3 {
    color: var(--getfree-ink) !important;
}

.getfree-editorial-list p,
body.getfree-site [data-sitemanager-module="article-list"] article p,
body.getfree-site [data-sitemanager-module="tag-article-list"] article p {
    color: var(--getfree-muted) !important;
}

.getfree-sidebar-card,
body.getfree-site aside > :is(div, section):not([data-sitemanager-module]) {
    border: 1px solid var(--getfree-line) !important;
    border-radius: 0.55rem !important;
    background: var(--getfree-surface) !important;
    box-shadow: none !important;
    backdrop-filter: none;
}

.getfree-sidebar-card h4 {
    color: var(--getfree-ink) !important;
    font-size: 1rem;
}

.getfree-sidebar-card h4 > span {
    background: var(--getfree-cyan) !important;
    border-radius: 0 !important;
}

body.getfree-site [data-sitemanager-module="tag-cloud"] a {
    border: 1px solid var(--getfree-line) !important;
    border-radius: 0.25rem !important;
    background: transparent !important;
    color: var(--getfree-ink) !important;
    font-size: 0.75rem;
}

body.getfree-site [data-sitemanager-module="tag-cloud"] a:hover {
    border-color: var(--getfree-sky) !important;
    background: #e8f6f3 !important;
    color: var(--getfree-sky) !important;
}

.getfree-page-hero {
    border: 1px solid var(--getfree-line) !important;
    border-radius: 0.55rem !important;
    background: #e8f0ed !important;
    box-shadow: none !important;
}

.getfree-page-hero::after {
    right: -4rem;
    bottom: -9rem;
    width: 25rem;
    height: 25rem;
    border: 1px solid rgba(0, 111, 128, 0.18);
}

.getfree-page-hero :is(h1, h2) {
    color: var(--getfree-ink) !important;
    font-size: clamp(2.2rem, 5vw, 4.3rem) !important;
    line-height: 1.12;
}

.getfree-page-hero p {
    color: #4e6268 !important;
}

/* 带图片的专题头图继续使用深色，以保证白色文字与图片的对比度。 */
.getfree-page-hero:has(> img),
.getfree-ais-hero {
    background: var(--getfree-ink) !important;
}

.getfree-page-hero:has(> img) :is(h1, h2),
.getfree-page-hero:has(> img) p,
.getfree-ais-hero :is(h1, h2),
.getfree-ais-hero p {
    color: white !important;
}

.getfree-ais-hero .text-red-200,
.getfree-ais-hero .text-slate-300 {
    color: #b7d9dd !important;
}

.getfree-ais-hero a {
    color: white !important;
}

body.getfree-site [data-sitemanager-module="pagination"] a {
    border-color: var(--getfree-line) !important;
    border-radius: 0.25rem !important;
    box-shadow: none !important;
}

body.getfree-site [data-sitemanager-module="pagination"] a:hover,
body.getfree-site [data-sitemanager-module="pagination"] a.active {
    border-color: var(--getfree-ink) !important;
    background: var(--getfree-ink) !important;
    color: white !important;
}

body.getfree-site footer {
    border-color: var(--getfree-line) !important;
    background: #e9eeea !important;
}

body.getfree-site footer.getfree-article-footer {
    border-color: rgba(255, 255, 255, 0.05) !important;
    background: #0f172a !important;
}

body.getfree-site footer::before {
    display: none;
}

.getfree-back-to-top {
    border-color: var(--getfree-line);
    border-radius: 0.3rem;
    background: var(--getfree-ink);
    color: white;
}

.getfree-back-to-top:hover {
    background: var(--getfree-sky);
}

@media (max-width: 767px) {
    .getfree-feature-grid > div:first-child a {
        min-height: 20rem;
    }

    .getfree-feature-grid > div:first-child a > div:nth-of-type(2) {
        padding: 1.5rem;
    }

    .getfree-section-heading {
        padding-top: 1.5rem;
    }
}