:root {
    --primary: #0f172a;
    --primary-deep: #020617;
    --surface: #1e293b;
    --surface-soft: rgba(30, 41, 59, 0.55);
    --surface-hover: rgba(30, 41, 59, 0.82);
    --primary-accent: #3b82f6;
    --primary-accent-hover: #60a5fa;
    --secondary-accent: #10b981;
    --tertiary-accent: #8b5cf6;
    --warning-accent: #f59e0b;
    --danger-accent: #ef4444;
    --light-text: #f8fafc;
    --body-text: #dbe4f0;
    --gray: #94a3b8;
    --border: rgba(148, 163, 184, 0.16);
    --border-strong: rgba(59, 130, 246, 0.32);
    --container-width: 90rem;
    --article-width: 90rem;
    --header-height: 5.75rem;
    --card-radius: 0.75rem;
    --shadow: 0 0.75rem 2rem rgba(2, 6, 23, 0.28);
    --shadow-accent: 0 0.75rem 2rem rgba(59, 130, 246, 0.16);
    --section-space: clamp(4rem, 7vw, 6rem);
}

html {
    box-sizing: border-box;
    min-width: 20rem;
    background-color: var(--primary);
    scroll-behavior: smooth;
    scrollbar-gutter: stable;
    -webkit-text-size-adjust: 100%;
}

*,
*::before,
*::after {
    box-sizing: inherit;
}

body,
h1,
h2,
h3,
h4,
h5,
h6,
p,
ul,
ol,
figure,
blockquote {
    margin: 0;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    color: var(--light-text);
    background-color: var(--primary);
    font-family: "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    font-size: 1rem;
    line-height: 1.65;
}

body > main {
    flex: 1;
}

button,
input,
select,
textarea {
    font: inherit;
}

img,
svg,
video,
iframe {
    max-width: 100%;
}

img,
video {
    height: auto;
}

a {
    color: var(--primary-accent);
    text-decoration: none;
    text-underline-offset: 0.2em;
    transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease, text-decoration-color 0.2s ease;
}

a:hover {
    color: var(--primary-accent-hover);
}

a:focus-visible,
button:focus-visible,
input:focus-visible + label,
summary:focus-visible {
    outline: 0.125rem solid var(--primary-accent-hover);
    outline-offset: 0.1875rem;
}

a:active {
    color: var(--secondary-accent);
    transform: translateY(0.0625rem);
}

a[aria-disabled="true"],
a.disabled,
.disabled > a,
.pagination .disabled a,
.pagination .disabled span {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.container {
    width: min(calc(100% - 2.5rem), var(--container-width));
    margin-inline: auto;
}

.sr-only,
.menu-checkbox,
.faq-checkbox {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
}

.hero h1,
.section-header h1,
.article-header h1 {
    color: transparent;
    background: linear-gradient(90deg, var(--primary-accent), var(--secondary-accent));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    overflow-wrap: anywhere;
}

.home-page section > .container > h2,
.home-page section > .container > div > h2 {
    margin-bottom: clamp(2.5rem, 5vw, 4rem);
    color: var(--light-text);
    font-size: clamp(2rem, 4vw, 2.5rem);
    line-height: 1.25;
    text-align: center;
}

.home-page section > .container > h2::after,
.home-page section > .container > div > h2::after {
    content: "";
    width: 5rem;
    height: 0.25rem;
    margin: 1rem auto 0;
    display: block;
    background: linear-gradient(90deg, var(--primary-accent), var(--secondary-accent));
    border-radius: 999px;
}

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 1000;
    min-height: var(--header-height);
    background-color: rgba(15, 23, 42, 0.9);
    border-bottom: 0.0625rem solid var(--border);
    backdrop-filter: blur(0.75rem);
    -webkit-backdrop-filter: blur(0.75rem);
    transition: background-color 0.25s ease, box-shadow 0.25s ease;
}

.site-header.is-scrolled {
    background-color: rgba(2, 6, 23, 0.97);
    box-shadow: 0 0.5rem 1.5rem rgba(2, 6, 23, 0.3);
}

.header-container {
    min-height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.logo {
    min-width: 0;
    font-size: 1.4rem;
    font-weight: 800;
}

.logo a,
.footer-logo-link {
    min-width: 0;
    display: inline-flex;
    align-items: center;
    color: var(--light-text);
    overflow-wrap: anywhere;
}

.logo a:hover,
.logo a:focus-visible,
.footer-logo-link:hover,
.footer-logo-link:focus-visible {
    color: var(--primary-accent-hover);
}

.logo-icon {
    margin-right: 0.65rem;
    flex: 0 0 auto;
    color: var(--primary-accent);
    font-size: 1.5rem;
}

.main-nav ul {
    display: flex;
    align-items: center;
    gap: clamp(0.75rem, 2vw, 1.5rem);
    padding: 0;
    list-style: none;
}

.main-nav li {
    min-width: 0;
}

.main-nav a:not(.btn) {
    position: relative;
    display: inline-flex;
    padding: 0.65rem 0.15rem;
    color: var(--gray);
    font-weight: 600;
    white-space: nowrap;
}

.main-nav a:not(.btn)::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 0.25rem;
    left: 0;
    height: 0.125rem;
    background-color: var(--primary-accent);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.2s ease;
}

.main-nav a:not(.btn):hover,
.main-nav a:not(.btn):focus-visible,
.main-nav a:not(.btn)[aria-current="page"],
.main-nav a:not(.btn)[aria-current="location"] {
    color: var(--light-text);
}

.main-nav a:not(.btn):hover::after,
.main-nav a:not(.btn):focus-visible::after,
.main-nav a:not(.btn)[aria-current="page"]::after,
.main-nav a:not(.btn)[aria-current="location"]::after {
    transform: scaleX(1);
}

.menu-toggle {
    width: 2.75rem;
    height: 2.75rem;
    display: none;
    align-items: center;
    justify-content: center;
    color: var(--light-text);
    background-color: rgba(255, 255, 255, 0.04);
    border: 0.0625rem solid var(--border);
    border-radius: 0.625rem;
    cursor: pointer;
}

.menu-toggle::before,
.menu-toggle::after {
    content: "";
    position: absolute;
    width: 1.4rem;
    height: 0.125rem;
    background-color: currentColor;
    border-radius: 999px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.menu-toggle::before {
    transform: translateY(-0.35rem);
    box-shadow: 0 0.7rem 0 currentColor;
}

.menu-toggle::after {
    transform: translateY(0);
}

.menu-checkbox:checked + .menu-toggle::before {
    box-shadow: none;
    transform: rotate(45deg);
}

.menu-checkbox:checked + .menu-toggle::after {
    transform: rotate(-45deg);
}

body.nav-open {
    overflow: hidden;
}

.btn {
    min-height: 2.8rem;
    padding: 0.8rem 1.8rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--light-text);
    border: 0.0625rem solid transparent;
    border-radius: 0.5rem;
    font-weight: 700;
    line-height: 1.2;
    text-align: center;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(90deg, var(--primary-accent), #2563eb);
    box-shadow: 0 0.5rem 1.5rem rgba(59, 130, 246, 0.2);
}

.btn-secondary {
    color: var(--light-text);
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--border);
}

.btn-tertiary {
    background: linear-gradient(90deg, var(--tertiary-accent), #7c3aed);
    box-shadow: 0 0.5rem 1.5rem rgba(139, 92, 246, 0.2);
}

.btn:hover,
.btn:focus-visible {
    color: #fff;
    border-color: var(--border-strong);
    box-shadow: var(--shadow-accent);
    transform: translateY(-0.2rem);
}

.btn:active {
    transform: translateY(0);
}

.button-group,
.hero-buttons,
.article-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.hero {
    position: relative;
    min-height: 46rem;
    padding: calc(var(--header-height) + 6rem) 0 8rem;
    display: flex;
    align-items: center;
    overflow: hidden;
    text-align: center;
    background: radial-gradient(circle at 50% 20%, rgba(59, 130, 246, 0.12), transparent 40%), var(--primary);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 65rem;
    margin-inline: auto;
}

.hero h1 {
    margin-bottom: 1.5rem;
    font-size: clamp(2.5rem, 6vw, 4rem);
    line-height: 1.15;
}

.hero-content > p {
    max-width: 50rem;
    margin: 0 auto 2.5rem;
    color: var(--gray);
    font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.home-feature-container,
.version-info,
.friend-links-list {
    padding: 0;
    list-style: none;
}

.home-feature-container {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
    margin: 2rem 0;
}

.home-feature-item {
    min-width: 0;
    min-height: 4rem;
    padding: 0.85rem 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light-text);
    background-color: var(--surface-soft);
    border: 0.0625rem solid var(--border);
    border-radius: var(--card-radius);
    transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.home-feature-item:hover {
    background-color: var(--surface-hover);
    border-color: var(--border-strong);
    transform: translateY(-0.2rem);
}

.home-feature-icon {
    margin-right: 0.65rem;
    flex: 0 0 auto;
    color: var(--primary-accent);
    font-size: 1.35rem;
}

.home-feature-text {
    min-width: 0;
    font-weight: 600;
    overflow-wrap: anywhere;
}

.hero-buttons {
    margin-top: 2rem;
}

.user-stat {
    margin: 2.5rem 0 1rem;
    padding: 1rem 1.25rem;
    display: inline-block;
    color: var(--body-text);
    background-color: rgba(30, 41, 59, 0.35);
    border: 0.0625rem solid var(--border);
    border-radius: var(--card-radius);
}

.stat-item {
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.stat-icon {
    flex: 0 0 auto;
    color: var(--primary-accent);
}

.stat-value {
    min-width: 0;
    font-weight: 600;
    overflow-wrap: anywhere;
}

.version-info {
    margin-top: 1rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem 1.5rem;
    color: var(--gray);
    font-size: 0.95rem;
}

.wave-container {
    position: absolute;
    right: 0;
    bottom: -0.0625rem;
    left: 0;
    overflow: hidden;
    line-height: 0;
}

.wave-container svg {
    width: calc(100% + 0.125rem);
    height: 4rem;
    display: block;
}

.wave-container .shape-fill {
    fill: var(--surface);
}

.features,
.efficiency-data,
.faq {
    background-color: var(--surface);
}

.get-tool,
.user-reviews,
.video-section,
.articles {
    background-color: var(--primary);
}

.features,
.get-tool,
.efficiency-data,
.user-reviews,
.video-section,
.faq,
.articles {
    padding: var(--section-space) 0;
}

.features-grid,
.steps-grid,
.data-overview,
.reviews-grid,
.articles-grid,
.news-grid {
    display: grid;
    gap: 1.75rem;
}

.features-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.data-overview {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-bottom: 4rem;
}

.reviews-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 3rem;
}

.articles-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card,
.step-card,
.data-card,
.review-card,
.article-card,
.why-choose,
.assistant-intro,
.game-support,
.video-container,
.video-seo-info,
.faq-item {
    min-width: 0;
    background-color: var(--surface-soft);
    border: 0.0625rem solid var(--border);
    border-radius: var(--card-radius);
    box-shadow: 0 0.3rem 1rem rgba(2, 6, 23, 0.1);
    transition: background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.feature-card,
.step-card,
.review-card {
    padding: 2rem;
}

.feature-card,
.data-card {
    text-align: center;
}

.feature-card:hover,
.step-card:hover,
.data-card:hover,
.review-card:hover,
.article-card:hover,
.why-choose:hover,
.game-item:hover,
.video-container:hover,
.faq-item:hover {
    background-color: var(--surface-hover);
    border-color: var(--border-strong);
    box-shadow: var(--shadow);
    transform: translateY(-0.35rem);
}

.feature-icon {
    margin-bottom: 1.25rem;
    color: var(--primary-accent);
    font-size: 2.25rem;
}

.feature-card h3,
.step-card h3,
.review-card h3,
.article-card h3 {
    margin-bottom: 0.85rem;
    color: var(--light-text);
    font-size: 1.35rem;
    line-height: 1.35;
}

.feature-card p,
.step-card p,
.review-card p,
.article-card p,
.assistant-intro p,
.game-support p,
.video-caption p,
.video-description p,
.faq-answer p {
    color: var(--gray);
}

.step-card {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.step-number {
    width: 3rem;
    height: 3rem;
    margin-bottom: 1.25rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    background: linear-gradient(90deg, var(--primary-accent), var(--secondary-accent));
    border-radius: 50%;
    font-size: 1.2rem;
    font-weight: 800;
}

.step-content {
    flex: 1;
}

.step-card > .btn {
    width: 100%;
    margin-top: 1rem;
}

.data-card {
    padding: 1.75rem;
}

.data-value {
    margin-bottom: 0.4rem;
    color: transparent;
    background: linear-gradient(90deg, var(--primary-accent), var(--secondary-accent));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    overflow-wrap: anywhere;
}

.data-label,
.reviewer-role {
    color: var(--gray);
}

.assistant-intro,
.game-support,
.why-choose,
.video-seo-info {
    max-width: 65rem;
    margin-inline: auto;
    padding: 2rem;
    text-align: center;
}

.assistant-intro {
    margin-top: 5rem;
    margin-bottom: 3rem;
}

.assistant-intro h3,
.game-support h3,
.why-choose h3,
.video-description h3 {
    margin-bottom: 1rem;
    color: var(--light-text);
    font-size: 1.4rem;
}

.game-support {
    margin-top: 3rem;
    margin-bottom: 5rem;
}

.game-list {
    margin-top: 1.25rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

.game-item {
    min-width: 10rem;
    min-height: 4.5rem;
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    background-color: rgba(255, 255, 255, 0.04);
    border: 0.0625rem solid var(--border);
    border-radius: 0.5rem;
    transition: background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.game-icon {
    color: var(--primary-accent);
    font-size: 1.4rem;
}

.player-testimonials {
    margin-bottom: 4rem;
}

.subsection-title,
.section-description {
    text-align: center;
}

.subsection-title {
    margin-bottom: 2rem;
    font-size: 1.65rem;
}

.subsection-title--compact {
    margin-bottom: 1rem;
}

.subsection-description {
    max-width: 50rem;
    margin: 0 auto 2.5rem;
    color: var(--gray);
}

.subsection-description--compact {
    margin-bottom: 1.25rem;
}

.testimonial-list {
    display: grid;
    gap: 1rem;
}

.testimonial-item {
    padding: 1.25rem 1.5rem;
    background-color: var(--surface-soft);
    border: 0.0625rem solid var(--border);
    border-radius: var(--card-radius);
}

.testimonial-header {
    margin-bottom: 0.75rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.testimonial-value {
    flex: 0 0 auto;
    font-size: 1.3rem;
    font-weight: 800;
}

.testimonial-value--primary {
    color: var(--primary-accent);
}

.testimonial-value--danger {
    color: var(--danger-accent);
}

.testimonial-value--secondary {
    color: var(--secondary-accent);
}

.testimonial-value--tertiary {
    color: var(--tertiary-accent);
}

.data-bar-container {
    height: 0.75rem;
    overflow: hidden;
    background-color: rgba(255, 255, 255, 0.08);
    border-radius: 999px;
}

.data-bar {
    width: var(--width, 0%);
    height: 100%;
    border-radius: inherit;
}

.data-bar.primary {
    background: linear-gradient(90deg, var(--primary-accent), var(--secondary-accent));
}

.data-bar.secondary {
    background: linear-gradient(90deg, var(--secondary-accent), #059669);
}

.data-bar.tertiary {
    background: linear-gradient(90deg, var(--tertiary-accent), #7c3aed);
}

.data-bar.danger {
    background: linear-gradient(90deg, var(--danger-accent), #dc2626);
}

.why-choose {
    margin-top: 4rem;
}

.more-reviews,
.more-articles {
    margin-top: 3rem;
    text-align: center;
}

.review-header {
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.review-avatar {
    width: 4rem;
    height: 4rem;
    flex: 0 0 auto;
    object-fit: cover;
    border: 0.125rem solid var(--primary-accent);
    border-radius: 50%;
}

.reviewer-info {
    min-width: 0;
}

.reviewer-name {
    color: var(--light-text);
    font-weight: 800;
}

.review-rating {
    margin-bottom: 1rem;
    display: flex;
    gap: 0.25rem;
    color: var(--warning-accent);
}

.review-text p {
    font-style: italic;
    line-height: 1.8;
}

.video-section {
    text-align: center;
}

.video-section > .container > p {
    margin-top: -2.5rem;
    margin-bottom: 2rem;
    color: var(--gray);
}

.video-container {
    max-width: 65rem;
    margin: 2rem auto 0;
    overflow: hidden;
}

.video-player {
    width: 100%;
    display: block;
    background-color: var(--primary-deep);
    aspect-ratio: 16 / 9;
}

.video-caption {
    padding: 1.25rem 1.5rem;
    background-color: var(--surface);
    border-top: 0.0625rem solid var(--border);
}

.video-caption p {
    margin: 0;
}

.video-seo-info {
    margin-top: 2rem;
    text-align: left;
}

.video-meta {
    padding-bottom: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1.5rem;
    border-bottom: 0.0625rem dashed var(--border);
}

.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    color: var(--gray);
}

.meta-item i,
.video-description h3 i {
    color: var(--primary-accent);
}

.video-description {
    padding-top: 1.25rem;
}

.faq-container {
    max-width: 55rem;
    margin-inline: auto;
}

.faq-item {
    overflow: hidden;
}

.faq-item + .faq-item {
    margin-top: 1rem;
}

.faq-question {
    width: 100%;
    min-height: 4rem;
    padding: 1rem 3.5rem 1rem 1.25rem;
    display: flex;
    align-items: center;
    color: var(--light-text);
    background-color: rgba(30, 41, 59, 0.32);
    cursor: pointer;
    font-size: 1.05rem;
    font-weight: 700;
    position: relative;
}

.faq-question::after {
    content: "+";
    position: absolute;
    right: 1.25rem;
    top: 50%;
    color: var(--primary-accent-hover);
    font-size: 1.6rem;
    line-height: 1;
    transform: translateY(-50%);
}

.faq-checkbox:checked + .faq-question::after {
    content: "−";
}

.faq-answer {
    max-height: 0;
    padding: 0 1.25rem;
    overflow: hidden;
    background-color: rgba(15, 23, 42, 0.32);
    transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq-checkbox:checked ~ .faq-answer {
    max-height: 40rem;
    padding: 1.25rem;
}

.faq-answer p {
    margin: 0;
}

.article-card {
    overflow: hidden;
}

.article-card__content,
.articles-grid .article-card .article-content {
    padding: 1.75rem;
}

.article-date {
    margin-bottom: 0.85rem;
    padding: 0.25rem 0.75rem;
    display: inline-flex;
    color: var(--gray);
    background-color: rgba(59, 130, 246, 0.1);
    border-radius: 999px;
    font-size: 0.875rem;
}

.article-title {
    margin-bottom: 0.85rem;
    line-height: 1.4;
}

.article-title a {
    color: var(--light-text);
    text-decoration: none;
    overflow-wrap: anywhere;
}

.article-title a:hover,
.article-title a:focus-visible {
    color: var(--primary-accent-hover);
}

.article-excerpt {
    margin-bottom: 1rem;
    color: var(--gray);
    overflow-wrap: anywhere;
}

.read-more {
    margin-top: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-weight: 700;
}

.read-more:hover,
.read-more:focus-visible {
    transform: translateX(0.2rem);
}

.read-more:active {
    transform: translateX(0);
}

.read-more svg {
    flex: 0 0 auto;
}

.page-main {
    min-height: calc(100vh - 10rem);
    padding: calc(var(--header-height) + 2rem) 0 4rem;
}

.page-section {
    min-width: 0;
}

.breadcrumb {
    width: 100%;
    min-height: 3.5rem;
    margin: 0 0 2rem;
    padding: 0.875rem 1.1rem;
    display: flex;
    align-items: center;
    color: var(--gray);
    background-color: var(--surface-soft);
    border: 0.0625rem solid var(--border);
    border-radius: 0.625rem;
    box-shadow: 0 0.25rem 0.75rem rgba(2, 6, 23, 0.12);
    font-size: 0.9375rem;
}

.breadcrumb-list {
    width: 100%;
    min-width: 0;
    padding: 0;
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    gap: 0.5rem;
    overflow: hidden;
    list-style: none;
}

.breadcrumb-item {
    min-width: 0;
    display: inline-flex;
    align-items: center;
    flex: 0 0 auto;
}

.breadcrumb-item:last-child {
    flex: 1 1 auto;
    overflow: hidden;
}

.breadcrumb-item:not(:last-child)::after {
    content: ">";
    margin-left: 0.5rem;
    color: var(--gray);
}

.breadcrumb-item a {
    color: var(--gray);
}

.breadcrumb-item a:hover,
.breadcrumb-item a:focus-visible {
    color: var(--primary-accent-hover);
    text-decoration: underline;
    text-decoration-color: currentColor;
}

.breadcrumb-item[aria-current="page"] span {
    min-width: 0;
    display: block;
    overflow: hidden;
    color: var(--light-text);
    font-weight: 700;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.section-header,
.article-header {
    margin-bottom: 2.5rem;
    text-align: center;
}

.section-header h1,
.article-header h1 {
    margin-bottom: 1rem;
    font-size: clamp(2rem, 5vw, 3rem);
    line-height: 1.25;
}

.section-header p {
    max-width: 52rem;
    margin-inline: auto;
    color: var(--gray);
    font-size: 1.05rem;
}

.news-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-bottom: 3rem;
}

.news-tags,
.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag-item {
    padding: 0.3rem 0.75rem;
    display: inline-flex;
    align-items: center;
    color: var(--primary-accent-hover);
    background-color: rgba(59, 130, 246, 0.1);
    border: 0.0625rem solid rgba(59, 130, 246, 0.18);
    border-radius: 999px;
    font-size: 0.85rem;
    line-height: 1.35;
}

.article-content-wrapper {
    width: 100%;
    max-width: var(--article-width);
    min-width: 0;
    margin-inline: auto;
}

.article-page {
    min-width: 0;
    padding: clamp(1.5rem, 4vw, 3rem);
    background-color: var(--surface-soft);
    border: 0.0625rem solid var(--border);
    border-radius: var(--card-radius);
    box-shadow: var(--shadow);
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.75rem 1.5rem;
    color: var(--gray);
}

.article-meta-item {
    min-width: 0;
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    overflow-wrap: anywhere;
}

.article-meta-item i {
    flex: 0 0 auto;
    color: var(--primary-accent);
}

.article-excerpt-box {
    margin: 2rem 0;
    padding: 1.25rem 1.5rem;
    background-color: rgba(30, 41, 59, 0.45);
    border-left: 0.25rem solid var(--primary-accent);
    border-radius: 0 var(--card-radius) var(--card-radius) 0;
}

.excerpt-title {
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-accent-hover);
    font-size: 1.1rem;
    font-weight: 800;
}

.article-excerpt-text {
    color: var(--body-text);
    line-height: 1.8;
    overflow-wrap: break-word;
}

.article-tags {
    margin-top: 2.5rem;
    padding: 1.25rem;
    color: var(--gray);
    background-color: rgba(15, 23, 42, 0.25);
    border: 0.0625rem solid var(--border);
    border-radius: var(--card-radius);
}

.article-tags > span {
    display: inline-block;
    margin-bottom: 0.75rem;
    font-weight: 700;
}

.article-actions {
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 0.0625rem solid var(--border);
}

.article-page > .article-content {
    min-width: 0;
    color: var(--body-text);
    font-size: 1.0625rem;
    line-height: 1.85;
    overflow-wrap: break-word;
}

.article-page > .article-content > :first-child {
    margin-top: 0;
}

.article-page > .article-content > :last-child {
    margin-bottom: 0;
}

.article-page > .article-content p {
    margin: 0 0 1.25rem;
}

.article-page > .article-content h1,
.article-page > .article-content h2,
.article-page > .article-content h3,
.article-page > .article-content h4,
.article-page > .article-content h5,
.article-page > .article-content h6 {
    margin: 2.25rem 0 1rem;
    color: var(--light-text);
    font-weight: 800;
    line-height: 1.35;
    scroll-margin-top: calc(var(--header-height) + 1rem);
    overflow-wrap: anywhere;
}

.article-page > .article-content h1 {
    font-size: clamp(2rem, 4vw, 2.75rem);
}

.article-page > .article-content h2 {
    font-size: clamp(1.6rem, 3vw, 2.1rem);
}

.article-page > .article-content h3 {
    font-size: clamp(1.35rem, 2.5vw, 1.7rem);
}

.article-page > .article-content h4 {
    font-size: 1.25rem;
}

.article-page > .article-content h5 {
    font-size: 1.1rem;
}

.article-page > .article-content h6 {
    color: var(--gray);
    font-size: 1rem;
}

.article-page > .article-content strong {
    color: var(--light-text);
    font-weight: 800;
}

.article-page > .article-content em {
    font-style: italic;
}

.article-page > .article-content mark {
    padding: 0.1em 0.3em;
    color: var(--primary-deep);
    background-color: #fde68a;
    border-radius: 0.25rem;
}

.article-page > .article-content a {
    color: var(--primary-accent-hover);
    text-decoration: underline;
    text-decoration-color: currentColor;
    text-decoration-thickness: 0.08em;
    overflow-wrap: anywhere;
}

.article-page > .article-content a:hover,
.article-page > .article-content a:focus-visible {
    color: var(--secondary-accent);
}

.article-page > .article-content a:active {
    color: var(--warning-accent);
}

.article-page > .article-content ul,
.article-page > .article-content ol {
    margin: 0 0 1.25rem 1.5rem;
    padding-left: 0.5rem;
}

.article-page > .article-content ul {
    list-style: disc outside;
}

.article-page > .article-content ol {
    list-style: decimal outside;
}

.article-page > .article-content ul ul {
    list-style-type: circle;
}

.article-page > .article-content ul ul ul {
    list-style-type: square;
}

.article-page > .article-content li {
    padding-left: 0.2rem;
}

.article-page > .article-content li + li {
    margin-top: 0.4rem;
}

.article-page > .article-content li::marker {
    color: var(--primary-accent-hover);
}

.article-page > .article-content li > ul,
.article-page > .article-content li > ol {
    margin-top: 0.5rem;
    margin-bottom: 0.5rem;
}

.article-page > .article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 0.625rem;
    box-shadow: var(--shadow);
}

.article-page > .article-content img:not([align]):not([style*="float"]):not([style*="display"]) {
    margin: 1.5rem 0;
    display: block;
}

.article-page > .article-content figure {
    max-width: 100%;
    margin: 1.75rem 0;
}

.article-page > .article-content figure img {
    margin: 0;
}

.article-page > .article-content figcaption {
    margin-top: 0.625rem;
    color: var(--gray);
    font-size: 0.875rem;
}

.article-page > .article-content table {
    width: max-content;
    max-width: 100%;
    margin: 1.5rem 0;
    display: block;
    overflow-x: auto;
    border-collapse: collapse;
    font-size: 0.9375rem;
    -webkit-overflow-scrolling: touch;
}

.article-page > .article-content caption {
    margin-bottom: 0.625rem;
    color: var(--gray);
    font-weight: 700;
    caption-side: top;
}

.article-page > .article-content thead,
.article-page > .article-content th {
    background-color: rgba(148, 163, 184, 0.1);
}

.article-page > .article-content tbody {
    background-color: rgba(15, 23, 42, 0.25);
}

.article-page > .article-content tbody tr:nth-child(even) {
    background-color: rgba(148, 163, 184, 0.05);
}

.article-page > .article-content th,
.article-page > .article-content td {
    min-width: 7.5rem;
    padding: 0.75rem 1rem;
    border: 0.0625rem solid var(--border);
    vertical-align: top;
}

.article-page > .article-content th {
    color: var(--light-text);
}

.article-page > .article-content blockquote {
    margin: 1.5rem 0;
    padding: 1rem 1.25rem;
    color: var(--body-text);
    background-color: rgba(59, 130, 246, 0.08);
    border-left: 0.25rem solid var(--primary-accent);
    border-radius: 0 var(--card-radius) var(--card-radius) 0;
}

.article-page > .article-content blockquote > :last-child {
    margin-bottom: 0;
}

.article-page > .article-content cite,
.article-page > .article-content time {
    color: var(--gray);
}

.article-page > .article-content cite {
    display: block;
    margin-top: 0.75rem;
    font-style: normal;
}

.article-page > .article-content code,
.article-page > .article-content pre,
.article-page > .article-content kbd {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

.article-page > .article-content code {
    padding: 0.15em 0.35em;
    color: #bfdbfe;
    background-color: rgba(59, 130, 246, 0.12);
    border: 0.0625rem solid rgba(59, 130, 246, 0.2);
    border-radius: 0.25rem;
    font-size: 0.9em;
    overflow-wrap: anywhere;
}

.article-page > .article-content pre {
    margin: 1.5rem 0;
    padding: 1rem;
    overflow-x: auto;
    color: var(--light-text);
    background-color: var(--primary-deep);
    border: 0.0625rem solid var(--border);
    border-radius: 0.625rem;
    font-size: 0.9375rem;
    line-height: 1.7;
    white-space: pre;
    -webkit-overflow-scrolling: touch;
}

.article-page > .article-content pre code {
    padding: 0;
    color: inherit;
    background-color: transparent;
    border: 0;
    white-space: inherit;
    overflow-wrap: normal;
}

.article-page > .article-content kbd {
    padding: 0.125rem 0.375rem;
    display: inline-block;
    color: var(--light-text);
    background-color: rgba(148, 163, 184, 0.14);
    border: 0.0625rem solid rgba(148, 163, 184, 0.35);
    border-bottom-width: 0.125rem;
    border-radius: 0.25rem;
}

.article-page > .article-content details {
    margin: 1.5rem 0;
    padding: 1rem 1.25rem;
    color: var(--body-text);
    background-color: rgba(30, 41, 59, 0.5);
    border: 0.0625rem solid var(--border);
    border-radius: var(--card-radius);
}

.article-page > .article-content summary {
    color: var(--light-text);
    font-weight: 800;
    cursor: pointer;
}

.article-page > .article-content details[open] summary {
    margin-bottom: 0.75rem;
}

.article-page > .article-content abbr[title] {
    text-decoration: underline dotted;
    text-underline-offset: 0.2em;
    cursor: help;
}

.article-page > .article-content iframe,
.article-page > .article-content video {
    max-width: 100%;
    margin: 1.5rem 0;
    border: 0;
    border-radius: 0.625rem;
}

.article-page > .article-content iframe:not([style*="width"]),
.article-page > .article-content video:not([style*="width"]) {
    width: 100%;
}

.article-page > .article-content iframe:not([height]):not([style*="height"]) {
    aspect-ratio: 16 / 9;
}

.pagination {
    width: 100%;
    margin: 3rem 0 1rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.pagination ul,
.pagination ol,
ul.pagination,
ol.pagination,
ul.page,
ol.page {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0;
    list-style: none;
}

.pagination li,
ul.pagination > li,
ol.pagination > li,
ul.page > li,
ol.page > li {
    display: flex;
    list-style: none;
}

.pagination a,
.pagination span,
ul.pagination a,
ul.pagination span,
ol.pagination a,
ol.pagination span,
ul.page a,
ul.page span,
ol.page a,
ol.page span {
    min-width: 2.5rem;
    min-height: 2.5rem;
    padding: 0.5rem 0.75rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--body-text);
    background-color: var(--surface-soft);
    border: 0.0625rem solid var(--border);
    border-radius: 0.45rem;
    line-height: 1;
    white-space: nowrap;
}

.pagination a:hover,
.pagination a:focus-visible,
ul.pagination a:hover,
ul.pagination a:focus-visible,
ul.page a:hover,
ul.page a:focus-visible {
    color: #fff;
    background-color: rgba(59, 130, 246, 0.25);
    border-color: var(--primary-accent);
}

.pagination a:active,
ul.pagination a:active,
ul.page a:active {
    background-color: rgba(16, 185, 129, 0.25);
    border-color: var(--secondary-accent);
}

.pagination .active > a,
.pagination .active > span,
.pagination .current,
.pagination .curpage,
.pagination .page-current,
ul.pagination .active > a,
ul.pagination .current,
ul.page .active > a,
ul.page .current {
    color: #fff;
    background: linear-gradient(90deg, var(--primary-accent), #2563eb);
    border-color: var(--primary-accent);
    font-weight: 800;
}

.pagination .disabled > a,
.pagination .disabled > span,
.pagination .nopage,
.pagination .page-disabled,
.pagination [aria-disabled="true"] {
    color: var(--gray);
    background-color: rgba(148, 163, 184, 0.05);
    border-color: var(--border);
}

.pagination .pageinfo,
.pagination .page-info,
.pagination .page-total {
    color: var(--gray);
    background-color: transparent;
    border-color: transparent;
}

.site-footer {
    position: relative;
    z-index: 2;
    padding: 3rem 0;
    color: var(--gray);
    background-color: var(--primary-deep);
    border-top: 0.0625rem solid var(--border);
    text-align: center;
}

.footer-content {
    display: flex;
    justify-content: center;
}

.footer-column {
    width: min(100%, 62rem);
}

.footer-brand {
    margin-bottom: 0.85rem;
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.35;
}

.footer-column p {
    color: var(--gray);
}

.friend-links {
    margin-top: 1.5rem;
    padding: 1.25rem 0;
    border-top: 0.0625rem solid var(--border);
    border-bottom: 0.0625rem solid var(--border);
}

.friend-links-title {
    margin-bottom: 0.75rem;
    color: var(--light-text);
    font-size: 1.05rem;
}

.friend-links-list {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.65rem 1rem;
}

.friend-links-list a {
    padding: 0.45rem 0.8rem;
    display: inline-flex;
    color: var(--gray);
    background-color: rgba(255, 255, 255, 0.04);
    border: 0.0625rem solid transparent;
    border-radius: 0.35rem;
}

.friend-links-list a:hover,
.friend-links-list a:focus-visible {
    color: var(--primary-accent-hover);
    background-color: rgba(59, 130, 246, 0.1);
    border-color: var(--border-strong);
}

.friend-links-list a:active {
    color: var(--secondary-accent);
}

.copyright {
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 0.0625rem solid var(--border);
    color: var(--gray);
    font-size: 0.9rem;
    overflow-wrap: anywhere;
}

@media (max-width: 72rem) {
    .features-grid,
    .articles-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

@media (max-width: 52rem) {
    :root {
        --header-height: 4.75rem;
    }

    .container {
        width: min(calc(100% - 2rem), var(--container-width));
    }

    .menu-toggle {
        position: relative;
        z-index: 1002;
        display: inline-flex;
    }

    .main-nav {
        position: fixed;
        inset: var(--header-height) 0 0;
        z-index: 1001;
        visibility: hidden;
        opacity: 0;
        pointer-events: none;
        background-color: rgba(2, 6, 23, 0.78);
        backdrop-filter: blur(0.5rem);
        -webkit-backdrop-filter: blur(0.5rem);
        transition: opacity 0.2s ease, visibility 0.2s ease;
    }

    .main-nav ul {
        width: min(calc(100% - 2rem), 28rem);
        max-height: calc(100dvh - var(--header-height) - 2rem);
        margin: 1rem auto;
        padding: 1rem;
        display: grid;
        gap: 0.55rem;
        overflow-y: auto;
        background-color: rgba(15, 23, 42, 0.98);
        border: 0.0625rem solid var(--border-strong);
        border-radius: 1rem;
        box-shadow: 0 1.25rem 3rem rgba(2, 6, 23, 0.48);
        -webkit-overflow-scrolling: touch;
    }

    .menu-checkbox:checked ~ .main-nav {
        visibility: visible;
        opacity: 1;
        pointer-events: auto;
    }

    .main-nav a:not(.btn),
    .main-nav .btn {
        width: 100%;
        min-height: 3rem;
        padding: 0.75rem 1rem;
        justify-content: flex-start;
        color: var(--light-text);
        background-color: rgba(255, 255, 255, 0.04);
        border: 0.0625rem solid transparent;
        border-radius: 0.65rem;
        white-space: normal;
        overflow-wrap: anywhere;
    }

    .main-nav a:not(.btn)::after {
        display: none;
    }

    .main-nav a:not(.btn):hover,
    .main-nav a:not(.btn):focus-visible,
    .main-nav a:not(.btn)[aria-current="page"],
    .main-nav a:not(.btn)[aria-current="location"] {
        color: #fff;
        background-color: rgba(59, 130, 246, 0.16);
        border-color: var(--border-strong);
    }

    .main-nav .btn {
        justify-content: center;
        background: linear-gradient(90deg, var(--primary-accent), #2563eb);
    }

    .hero {
        min-height: auto;
        padding: calc(var(--header-height) + 4rem) 0 6rem;
    }

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

    .features-grid,
    .steps-grid,
    .reviews-grid,
    .articles-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }

    .video-section > .container > p {
        margin-top: -1.5rem;
    }

    .page-main {
        padding-top: calc(var(--header-height) + 1.25rem);
    }

    .breadcrumb {
        margin-bottom: 1.5rem;
    }

    .article-page {
        padding: 1.25rem;
    }

    .article-actions .btn,
    .hero-buttons .btn {
        width: 100%;
    }

    .article-page > .article-content {
        font-size: 1rem;
        line-height: 1.78;
    }

    .site-footer {
        padding: 2.5rem 0;
    }
}

@media (max-width: 34rem) {
    .logo {
        max-width: calc(100% - 4rem);
        font-size: 1.05rem;
    }

    .home-feature-container,
    .data-overview {
        grid-template-columns: 1fr;
    }

    .testimonial-header,
    .article-meta {
        align-items: flex-start;
        flex-direction: column;
    }

    .version-info {
        align-items: center;
        flex-direction: column;
        gap: 0.65rem;
        text-align: center;
    }

    .version-info .stat-item {
        width: 100%;
        justify-content: center;
        text-align: center;
    }

    .version-info .stat-value {
        text-align: center;
    }

    .user-stat {
        width: min(100%, 22rem);
        margin: 1.75rem auto 1rem;
        padding: 1rem;
    }

    .user-stat .stat-item {
        justify-content: center;
        align-items: center;
        text-align: center;
    }

    .user-stat .stat-value {
        text-align: center;
        line-height: 1.55;
    }

    .breadcrumb {
        padding-inline: 0.85rem;
        font-size: 0.875rem;
    }

    .pagination a,
    .pagination span,
    ul.pagination a,
    ul.pagination span,
    ul.page a,
    ul.page span {
        min-width: 2.25rem;
        min-height: 2.25rem;
        padding: 0.45rem 0.6rem;
    }
}

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

    *,
    *::before,
    *::after {
        scroll-behavior: auto;
        transition-duration: 0.01ms;
        transition-delay: 0s;
    }
}