/* ========== Reset & Base ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:root {
    --purple-600: #8b5cf6;
    --purple-500: #a78bfa;
    --blue-500: #3b82f6;
    --cyan-400: #22d3ee;
    --bg-dark: #0f172a;
    --bg-card: rgba(30, 41, 59, 0.5);
    --text-white: #f1f5f9;
    --text-gray: #94a3b8;
    --border-glass: rgba(148, 163, 184, 0.15);
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #0f172a 100%);
    color: var(--text-white);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
a {
    color: inherit;
    text-decoration: none;
    transition: all 0.3s;
}
ul {
    list-style: none;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========== Background Blobs ========== */
.bg-decor {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}
.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.3;
}
.blob-1 {
    width: 500px; height: 500px;
    background: var(--purple-600);
    top: -200px; left: -100px;
    animation: float 20s infinite ease-in-out;
}
.blob-2 {
    width: 400px; height: 400px;
    background: var(--blue-500);
    top: 40%; right: -100px;
    animation: float 25s infinite ease-in-out reverse;
}
.blob-3 {
    width: 350px; height: 350px;
    background: var(--cyan-400);
    bottom: -100px; left: 30%;
    animation: float 22s infinite ease-in-out;
}
@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(50px, 50px); }
}

/* ========== Glass Card ========== */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}

/* ========== Header ========== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 16px 0;
}
.glass-nav {
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glass);
}
.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
}
.logo-icon {
    font-size: 24px;
    background: linear-gradient(135deg, var(--purple-500), var(--cyan-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.main-nav .nav-list {
    display: flex;
    align-items: center;
    gap: 32px;
}
.nav-link {
    font-size: 15px;
    color: var(--text-gray);
    position: relative;
}
.nav-link:hover {
    color: var(--text-white);
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px; left: 0;
    width: 0; height: 2px;
    background: linear-gradient(90deg, var(--purple-500), var(--cyan-400));
    transition: width 0.3s;
}
.nav-link:hover::after {
    width: 100%;
}
.menu-toggle, .menu-close {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
}
.menu-toggle span {
    display: block;
    width: 24px; height: 2px;
    background: var(--text-white);
    margin: 6px 0;
    transition: 0.3s;
}
.menu-close {
    position: absolute;
    top: 20px; right: 20px;
    font-size: 28px;
    color: var(--text-white);
}

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    text-align: center;
}
.btn-primary {
    background: linear-gradient(135deg, var(--purple-600), var(--blue-500));
    color: white;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.5);
}
.btn-glass {
    background: rgba(255,255,255,0.1);
    color: var(--text-white);
    border: 1px solid var(--border-glass);
}
.btn-glass:hover {
    background: rgba(255,255,255,0.15);
}
.btn-ghost {
    background: transparent;
    border: 1px solid var(--border-glass);
    color: var(--text-white);
}
.btn-ghost:hover {
    background: rgba(255,255,255,0.1);
}
.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
    border-radius: 8px;
}
.btn-block {
    width: 100%;
}

/* ========== Section ========== */
.section {
    padding: 80px 0;
    position: relative;
    z-index: 1;
}
.section-head {
    text-align: center;
    margin-bottom: 50px;
}
.section-head h2 {
    font-size: 36px;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--purple-500), var(--cyan-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.section-head p {
    color: var(--text-gray);
    font-size: 16px;
}

/* ========== Hero ========== */
.hero {
    padding: 60px 0 80px;
    position: relative;
    z-index: 1;
}
.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    padding: 50px;
}
.badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(139, 92, 246, 0.2);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: 20px;
    font-size: 13px;
    color: var(--purple-500);
    margin-bottom: 24px;
}
.hero-text h1 {
    font-size: 48px;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(135deg, white, #c7d2fe);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-text p {
    font-size: 17px;
    color: var(--text-gray);
    margin-bottom: 32px;
    line-height: 1.8;
}
.hero-btns {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.hero-banner img {
    width: 100%;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

/* ========== Platform Grid ========== */
.platform-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.platform-card {
    padding: 30px;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}
.platform-card:hover {
    transform: translateY(-5px);
    border-color: var(--purple-500);
}
.p-icon {
    font-size: 40px;
    margin-bottom: 16px;
}
.platform-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
}
.platform-card p {
    color: var(--text-gray);
    font-size: 14px;
    margin-bottom: 20px;
}
.p-devices {
    display: flex;
    gap: 12px;
    font-size: 18px;
    margin-bottom: 20px;
}
.p-link {
    color: var(--purple-500);
    font-weight: 500;
    font-size: 14px;
}
.platform-card:hover .p-link {
    color: var(--cyan-400);
}
.more-card .update-tag {
    font-size: 12px;
    background: rgba(34, 211, 238, 0.2);
    color: var(--cyan-400);
    padding: 4px 10px;
    border-radius: 4px;
}

/* ========== Download Center ========== */
.download-layout {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 24px;
}
.device-nav {
    padding: 20px;
    height: fit-content;
    position: sticky;
    top: 100px;
}
.device-nav h4 {
    margin-bottom: 16px;
    font-size: 14px;
    color: var(--text-gray);
    text-transform: uppercase;
    letter-spacing: 1px;
}
.device-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 12px 16px;
    background: transparent;
    border: none;
    border-radius: 10px;
    color: var(--text-gray);
    font-size: 15px;
    cursor: pointer;
    text-align: left;
    margin-bottom: 8px;
    transition: all 0.3s;
}
.device-btn:hover {
    background: rgba(255,255,255,0.05);
    color: var(--text-white);
}
.device-btn.active {
    background: linear-gradient(135deg, rgba(139,92,246,0.2), rgba(59,130,246,0.2));
    color: var(--purple-500);
    border: 1px solid rgba(139,92,246,0.3);
}
.d-icon {
    font-size: 20px;
}
.download-panel {
    padding: 40px;
    display: none;
}
.download-panel.active {
    display: block;
    animation: fadeIn 0.4s ease;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
.download-panel h3 {
    font-size: 24px;
    margin-bottom: 8px;
}
.sys-req {
    color: var(--text-gray);
    font-size: 14px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-glass);
}
.download-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 24px;
}
.download-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: rgba(255,255,255,0.03);
    border-radius: 12px;
    border: 1px solid var(--border-glass);
    gap: 20px;
    flex-wrap: wrap;
}
.di-name {
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 6px;
}
.di-desc {
    font-size: 13px;
    color: var(--text-gray);
}
.di-actions {
    display: flex;
    gap: 10px;
}
.simple-guides {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 24px;
}
.simple-guide {
    padding: 24px;
    background: rgba(255,255,255,0.03);
    border-radius: 12px;
    border: 1px solid var(--border-glass);
}
.sg-icon {
    font-size: 32px;
    margin-bottom: 12px;
}
.simple-guide h4 {
    font-size: 16px;
    margin-bottom: 8px;
}
.simple-guide p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.7;
}
.safe-notice {
    padding: 16px 20px;
    background: rgba(59,130,246,0.1);
    border: 1px solid rgba(59,130,246,0.2);
    border-radius: 10px;
    font-size: 14px;
    color: #93c5fd;
}
.safe-notice.warning {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
}

/* ========== Two Column ========== */
.two-col-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}
.col-card {
    padding: 40px;
}
.col-card h3 {
    font-size: 24px;
    margin-bottom: 30px;
}
.feature-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.feature-row {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}
.f-icon {
    font-size: 24px;
    flex-shrink: 0;
    margin-top: 2px;
}
.feature-row h4 {
    font-size: 16px;
    margin-bottom: 4px;
}
.feature-row p {
    font-size: 14px;
    color: var(--text-gray);
}
.step-list {
    display: flex;
    flex-direction: column;
}
.step-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}
.step-n {
    width: 40px; height: 40px;
    background: linear-gradient(135deg, var(--purple-600), var(--blue-500));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
    z-index: 2;
}
.step-item h4 {
    font-size: 16px;
    margin-bottom: 4px;
    padding-top: 8px;
}
.step-item p {
    font-size: 14px;
    color: var(--text-gray);
}
.step-line {
    width: 2px;
    height: 30px;
    background: linear-gradient(180deg, var(--purple-500), transparent);
    margin-left: 19px;
}

/* ========== Security Banner ========== */
.security-banner {
    padding: 40px;
}
.sec-head {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 30px;
}
.sec-icon {
    font-size: 32px;
}
.sec-head h3 {
    font-size: 24px;
}
.sec-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}
.sec-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 18px;
    background: rgba(255,255,255,0.03);
    border-radius: 10px;
    font-size: 14px;
}
.sec-item span:first-child {
    color: var(--cyan-400);
    font-weight: 700;
}

/* ========== News ========== */
ul.article-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
    list-style: none;
    margin: 0;
    padding: 0;
    width: 100%;
    box-sizing: border-box;
}
ul.article-cards > li.article-card {
    min-width: 0;
    width: auto;
    max-width: none;
    margin: 0;
    float: none;
    box-sizing: border-box;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s;
}
ul.article-cards > li.article-card:hover {
    transform: translateY(-5px);
    border-color: var(--purple-500);
}
.article-card .card-thumb {
    width: 100%;
    overflow: hidden;
}
.article-card .card-thumb img {
    display: block;
    width: 100%;
    max-width: 100%;
    height: 160px;
    object-fit: cover;
    transition: transform 0.3s;
}
.article-card:hover .card-thumb img {
    transform: scale(1.05);
}
.article-card .card-title {
    overflow-wrap: anywhere;
    padding: 16px;
    font-size: 15px;
    font-weight: 500;
    line-height: 1.5;
    margin: 0;
}
.article-card .card-date {
    display: block;
    padding: 0 16px 12px;
    font-size: 12px;
    color: var(--text-gray);
}
.article-card .card-summary {
    overflow-wrap: anywhere;
    padding: 0 16px 16px;
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ========== FAQ ========== */
.faq-wrap {
    padding: 20px 40px;
}
.faq-item {
    border-bottom: 1px solid var(--border-glass);
}
.faq-item:last-child {
    border-bottom: none;
}
.faq-q {
    width: 100%;
    padding: 20px 0;
    background: none;
    border: none;
    color: var(--text-white);
    font-size: 16px;
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: inherit;
}
.faq-q .arrow {
    transition: transform 0.3s;
    font-size: 12px;
    color: var(--text-gray);
}
.faq-item.active .faq-q .arrow {
    transform: rotate(180deg);
}
.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s, padding 0.3s;
}
.faq-item.active .faq-a {
    max-height: 300px;
    padding-bottom: 20px;
}
.faq-a p {
    color: var(--text-gray);
    font-size: 14px;
    line-height: 1.8;
}

/* ========== About ========== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}
.about-card, .contact-card {
    padding: 40px;
}
.about-card h3, .contact-card h3 {
    font-size: 24px;
    margin-bottom: 20px;
}
.about-card p {
    color: var(--text-gray);
    font-size: 14px;
    margin-bottom: 16px;
    line-height: 1.8;
}
.statement {
    margin-top: 20px;
    padding: 16px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 10px;
    font-size: 13px;
    color: #fca5a5;
    line-height: 1.7;
}
.contact-card p {
    color: var(--text-gray);
    margin-bottom: 20px;
    font-size: 14px;
}
.contact-notes {
    margin: 24px 0;
    padding: 20px;
    background: rgba(255,255,255,0.03);
    border-radius: 10px;
}
.contact-notes p {
    font-size: 13px;
    margin-bottom: 8px;
    line-height: 1.7;
}
.contact-notes p:last-child {
    margin-bottom: 0;
}
.demo-form h4 {
    font-size: 16px;
    margin-bottom: 16px;
    padding-top: 20px;
    border-top: 1px solid var(--border-glass);
}
.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-glass);
    border-radius: 10px;
    color: var(--text-white);
    font-size: 14px;
    font-family: inherit;
    margin-bottom: 12px;
}
.form-input::placeholder, .form-textarea::placeholder {
    color: var(--text-gray);
}
.form-textarea {
    resize: vertical;
    min-height: 80px;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--purple-500);
}

/* ========== Footer ========== */
.site-footer {
    position: relative;
    z-index: 1;
    padding: 60px 0 30px;
}
.footer-top {
    padding: 40px;
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 50px;
    margin-bottom: 30px;
}
.footer-brand p {
    color: var(--text-gray);
    font-size: 14px;
    margin: 16px 0 24px;
    line-height: 1.8;
}
.footer-groups {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.footer-groups h5 {
    font-size: 15px;
    margin-bottom: 16px;
}
.footer-groups a {
    display: block;
    color: var(--text-gray);
    font-size: 13px;
    margin-bottom: 10px;
}
.footer-groups a:hover {
    color: var(--purple-500);
}
.grouplinks {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.grouplinks a {
    margin-bottom: 0;
    font-size: 13px;
}
.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-glass);
    color: var(--text-gray);
    font-size: 13px;
}
.footer-bottom p {
    margin-bottom: 8px;
}
.footer-beian a {
    color: var(--text-gray);
}
.footer-beian a:hover {
    color: var(--purple-500);
}
.disclaimer {
    font-size: 12px !important;
    opacity: 0.7;
}

/* ========== Article Detail ========== */
.article-page {
    padding: 40px 0 80px;
    position: relative;
    z-index: 1;
}
.detail-card {
    padding: 50px;
    margin-bottom: 24px;
}
.breadcrumb {
    font-size: 14px;
    color: var(--text-gray);
    margin-bottom: 24px;
}
.breadcrumb a {
    color: var(--text-gray);
}
.breadcrumb a:hover {
    color: var(--purple-500);
}
.article-title {
    font-size: 32px;
    line-height: 1.4;
    margin-bottom: 16px;
}
.article-meta {
    margin-bottom: 20px;
    font-size: 14px;
    color: var(--text-gray);
}
.article-summary {
    padding: 20px;
    background: rgba(139,92,246,0.1);
    border-left: 4px solid var(--purple-500);
    border-radius: 0 10px 10px 0;
    color: var(--text-gray);
    margin-bottom: 30px;
    font-size: 15px;
}
.article-cover {
    margin-bottom: 30px;
    border-radius: 12px;
    overflow: hidden;
}
.article-cover img {
    width: 100%;
}
.article-content {
    font-size: 16px;
    line-height: 1.9;
    color: var(--text-gray);
}
.article-content h2, .article-content h3 {
    color: var(--text-white);
    margin: 30px 0 16px;
}
.article-content h2 { font-size: 24px; }
.article-content h3 { font-size: 20px; }
.article-content p { margin-bottom: 16px; }
.article-content img {
    border-radius: 8px;
    margin: 20px 0;
}
.article-content ul, .article-content ol {
    padding-left: 24px;
    margin-bottom: 16px;
}
.article-content li {
    margin-bottom: 8px;
}

.article-footer {
    padding: 30px 40px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}
.article-nav h4 {
    margin-bottom: 16px;
    font-size: 16px;
}
.nav-links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.nav-chip {
    padding: 8px 16px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    font-size: 13px;
    color: var(--text-gray);
}
.nav-chip:hover {
    border-color: var(--purple-500);
    color: var(--purple-500);
}
.article-cta p {
    color: var(--text-gray);
    margin-bottom: 16px;
    font-size: 14px;
}
.article-cta .btn {
    margin-right: 10px;
    margin-bottom: 10px;
}

/* ========== Modal ========== */
.modal {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(5px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.modal.active {
    display: flex;
}
.modal-card {
    max-width: 400px;
    width: 100%;
    padding: 40px;
    text-align: center;
    position: relative;
}
.modal-card h3 {
    margin-bottom: 16px;
    font-size: 20px;
}
.modal-card p {
    color: var(--text-gray);
    margin-bottom: 24px;
    font-size: 14px;
    line-height: 1.7;
}
.modal-close {
    position: absolute;
    top: 15px; right: 20px;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-gray);
    cursor: pointer;
}

/* ========== Fade Up ========== */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}
.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========== Responsive ========== */
@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        padding: 30px;
    }
    .hero-text h1 { font-size: 36px; }
    .platform-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .download-layout {
        grid-template-columns: 1fr;
    }
    .device-nav {
        position: static;
        display: flex;
        overflow-x: auto;
        gap: 10px;
        padding: 16px;
    }
    .device-nav h4 { display: none; }
    .device-btn {
        margin-bottom: 0;
        white-space: nowrap;
    }
    .two-col-grid {
        grid-template-columns: 1fr;
    }
    .sec-grid {
        grid-template-columns: 1fr;
    }
    .about-grid {
        grid-template-columns: 1fr;
    }
    .footer-top {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .footer-groups {
        grid-template-columns: repeat(3, 1fr);
    }
    .article-footer {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 768px) {
    .main-nav {
        position: fixed;
        top: 0; right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--bg-dark);
        backdrop-filter: blur(20px);
        border-left: 1px solid var(--border-glass);
        padding: 80px 30px;
        transition: right 0.3s;
        z-index: 200;
    }
    .main-nav.active {
        right: 0;
    }
    .main-nav .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 24px;
    }
    .menu-toggle, .menu-close {
        display: block;
    }
    .section { padding: 50px 0; }
    .section-head h2 { font-size: 28px; }
    .hero-text h1 { font-size: 28px; }
    .platform-grid {
        grid-template-columns: 1fr;
    }
    .simple-guides {
        grid-template-columns: 1fr;
    }
    .download-item {
        flex-direction: column;
        align-items: flex-start;
    }
    .di-actions {
        width: 100%;
    }
    .di-actions .btn {
        flex: 1;
    }
    .download-panel, .col-card, .security-banner,
    .about-card, .contact-card, .detail-card {
        padding: 24px;
    }
    .footer-top { padding: 24px; }
    .footer-groups {
        grid-template-columns: 1fr;
    }
    .faq-wrap { padding: 16px 24px; }
    .article-footer { padding: 24px; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    .blob { animation: none; }
    html { scroll-behavior: auto; }
}