:root {
    --bg-primary: #0a0a12;
    --bg-secondary: #12121f;
    --bg-card: #1a1a2e;
    --bg-glass: rgba(26, 26, 46, 0.72);
    --text-primary: #f0f0f5;
    --text-secondary: #a8a8c0;
    --text-muted: #6e6e88;
    --accent: #e63946;
    --accent-glow: #ff4d5a;
    --accent-soft: rgba(230, 57, 70, 0.14);
    --gold: #f4c542;
    --border: #2a2a44;
    --border-hover: #3d3d5c;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.6);
    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 20px;
    --radius-pill: 100px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    --max-width: 1200px;
}

body.light-mode {
    --bg-primary: #f2f2f8;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.78);
    --text-primary: #12121f;
    --text-secondary: #55556e;
    --text-muted: #8888a0;
    --accent-soft: rgba(230, 57, 70, 0.08);
    --border: #e2e2ee;
    --border-hover: #c8c8dc;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    transition: background-color var(--transition), color var(--transition);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition);
}

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

img,
svg {
    max-width: 100%;
    height: auto;
    display: block;
}

ul,
ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
}

input {
    font-family: inherit;
}

::selection {
    background: var(--accent);
    color: #fff;
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-hover);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg-glass);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border);
    transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-sm);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
    gap: 16px;
}

.logo {
    font-size: 1.45rem;
    font-weight: 900;
    letter-spacing: 2px;
    color: var(--accent);
    text-transform: uppercase;
    white-space: nowrap;
    flex-shrink: 0;
    transition: transform var(--transition), text-shadow var(--transition);
}

.logo:hover {
    transform: scale(1.03);
    text-shadow: 0 0 24px rgba(230, 57, 70, 0.5);
    color: var(--accent);
}

.logo span {
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    gap: 8px;
    align-items: center;
}

.nav-links li {
    position: relative;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
    white-space: nowrap;
}

.nav-links a:hover {
    color: var(--accent);
    background: var(--accent-soft);
}

.nav-actions {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-shrink: 0;
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    padding: 5px 14px;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.search-box:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.search-box input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 0.85rem;
    width: 130px;
    transition: width var(--transition);
}

.search-box input::placeholder {
    color: var(--text-muted);
}

.search-box input:focus {
    width: 180px;
}

.search-box button {
    color: var(--accent);
    font-size: 1rem;
    padding: 2px;
    transition: transform var(--transition);
}

.search-box button:hover {
    transform: scale(1.15);
}

.theme-toggle {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-primary);
    border-radius: 50%;
    width: 38px;
    height: 38px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
    transition: all var(--transition);
    flex-shrink: 0;
}

.theme-toggle:hover {
    border-color: var(--accent);
    transform: rotate(20deg) scale(1.08);
    box-shadow: 0 0 16px var(--accent-soft);
}

.mobile-menu-btn {
    display: none;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-size: 1.3rem;
    cursor: pointer;
    width: 38px;
    height: 38px;
    border-radius: var(--radius-sm);
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.mobile-menu-btn:hover {
    border-color: var(--accent);
}

.breadcrumb {
    padding: 18px 0 6px;
    font-size: 0.82rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 2px;
}

.breadcrumb a {
    color: var(--text-secondary);
    transition: color var(--transition);
}

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

.breadcrumb span {
    margin: 0 8px;
    color: var(--text-muted);
}

.banner {
    position: relative;
    background: linear-gradient(135deg, #0a0a12 0%, #1a1a2e 40%, #2a1a2e 70%, #1a0a12 100%);
    min-height: 460px;
    display: flex;
    align-items: center;
    overflow: hidden;
    isolation: isolate;
}

.banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 80% at 20% 50%, rgba(230, 57, 70, 0.12) 0%, transparent 70%),
        radial-gradient(ellipse 50% 70% at 80% 30%, rgba(255, 77, 90, 0.08) 0%, transparent 70%);
    z-index: 0;
    pointer-events: none;
}

.banner::after {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23e63946' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    z-index: 0;
    pointer-events: none;
    opacity: 0.6;
}

body.light-mode .banner {
    background: linear-gradient(135deg, #f2f2f8 0%, #e8e8f2 40%, #f0e8f0 70%, #f8f0f0 100%);
}

.banner .container {
    position: relative;
    z-index: 2;
    width: 100%;
}

.banner-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease, visibility 0.8s ease;
    display: flex;
    align-items: center;
    pointer-events: none;
}

.banner-slide.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    position: relative;
}

.banner-content {
    position: relative;
    z-index: 2;
    max-width: 720px;
    padding: 40px 0;
}

.banner h1 {
    font-size: clamp(1.8rem, 4.5vw, 3rem);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 18px;
    background: linear-gradient(90deg, var(--text-primary) 0%, var(--accent) 55%, var(--accent-glow) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

body.light-mode .banner h1 {
    background: linear-gradient(90deg, #12121f 0%, var(--accent) 55%, var(--accent-glow) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.banner p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 28px;
    max-width: 580px;
    line-height: 1.8;
}

.banner-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--accent) 0%, #c1121f 100%);
    color: #fff !important;
    padding: 14px 36px;
    border-radius: var(--radius-pill);
    font-weight: 700;
    font-size: 0.95rem;
    transition: all var(--transition);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(230, 57, 70, 0.35);
    position: relative;
    overflow: hidden;
}

.banner-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--accent-glow) 0%, var(--accent) 100%);
    opacity: 0;
    transition: opacity var(--transition);
}

.banner-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(230, 57, 70, 0.5);
    color: #fff !important;
}

.banner-cta:hover::before {
    opacity: 1;
}

.banner-cta span,
.banner-cta {
    position: relative;
    z-index: 1;
}

.banner-dots {
    position: absolute;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 5;
}

.banner-dot {
    width: 10px;
    height: 10px;
    border-radius: var(--radius-pill);
    background: rgba(255, 255, 255, 0.25);
    cursor: pointer;
    transition: all var(--transition);
    border: none;
}

.banner-dot:hover {
    background: rgba(255, 255, 255, 0.5);
}

.banner-dot.active {
    background: var(--accent);
    width: 32px;
    box-shadow: 0 0 12px rgba(230, 57, 70, 0.6);
}

section {
    padding: 72px 0;
    position: relative;
}

section:nth-child(even) {
    background: var(--bg-secondary);
}

.section-title {
    font-size: clamp(1.4rem, 3vw, 1.9rem);
    font-weight: 800;
    margin-bottom: 14px;
    color: var(--text-primary);
    letter-spacing: -0.3px;
    line-height: 1.3;
}

.section-title .accent {
    color: var(--accent);
    position: relative;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 44px;
    max-width: 760px;
    line-height: 1.8;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
    gap: 24px;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 30px 26px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-glow));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.card:hover::before {
    transform: scaleX(1);
}

.card:hover {
    transform: translateY(-6px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow);
}

.card-icon {
    width: 52px;
    height: 52px;
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-soft);
    border-radius: var(--radius-sm);
    transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover .card-icon {
    transform: scale(1.08) rotate(-3deg);
    box-shadow: 0 0 20px var(--accent-soft);
}

.card h3 {
    font-size: 1.12rem;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-weight: 700;
    line-height: 1.4;
}

.card p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 24px;
    text-align: center;
}

.stat-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 18px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0;
    transition: opacity var(--transition);
}

.stat-item:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: var(--shadow);
}

.stat-item:hover::after {
    opacity: 1;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--accent);
    line-height: 1.1;
    letter-spacing: -1px;
    font-variant-numeric: tabular-nums;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 10px;
    font-weight: 500;
}

.article-list {
    display: grid;
    gap: 18px;
}

.article-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px 28px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.article-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--accent);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform var(--transition);
}

.article-item:hover::before {
    transform: scaleY(1);
}

.article-item:hover {
    border-color: var(--border-hover);
    transform: translateX(6px);
    box-shadow: var(--shadow-sm);
}

.article-meta {
    display: flex;
    gap: 16px;
    align-items: center;
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.article-meta span {
    background: var(--accent-soft);
    color: var(--accent);
    padding: 2px 10px;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 0.72rem;
}

.article-item h3 {
    font-size: 1.08rem;
    margin-bottom: 10px;
    line-height: 1.5;
}

.article-item h3 a {
    color: var(--text-primary);
    transition: color var(--transition);
}

.article-item h3 a:hover {
    color: var(--accent);
}

.article-item p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-bottom: 14px;
    line-height: 1.8;
}

.read-more {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap var(--transition), color var(--transition);
}

.read-more:hover {
    gap: 10px;
    color: var(--accent-glow);
}

.faq-list {
    display: grid;
    gap: 12px;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.faq-item:hover {
    border-color: var(--border-hover);
}

.faq-item.open {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent-soft), var(--shadow-sm);
}

.faq-question {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    padding: 20px 26px;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 0.98rem;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    transition: background var(--transition), color var(--transition);
    line-height: 1.5;
}

.faq-question:hover {
    background: var(--accent-soft);
    color: var(--accent);
}

.faq-question .arrow {
    transition: transform var(--transition);
    font-size: 0.9rem;
    color: var(--accent);
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--accent-soft);
}

.faq-item.open .faq-question .arrow {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1), padding 0.45s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0 26px;
}

.faq-item.open .faq-answer {
    max-height: 600px;
    padding: 0 26px 22px;
}

.faq-answer p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.85;
    border-top: 1px solid var(--border);
    padding-top: 18px;
}

.howto-steps {
    display: grid;
    gap: 18px;
    counter-reset: step;
}

.howto-step {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px 28px 26px 78px;
    position: relative;
    counter-increment: step;
    transition: all var(--transition);
}

.howto-step:hover {
    border-color: var(--border-hover);
    transform: translateX(4px);
    box-shadow: var(--shadow-sm);
}

.howto-step::before {
    content: counter(step);
    position: absolute;
    left: 26px;
    top: 26px;
    width: 34px;
    height: 34px;
    background: linear-gradient(135deg, var(--accent), #c1121f);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.88rem;
    box-shadow: 0 4px 12px rgba(230, 57, 70, 0.35);
}

.howto-step h4 {
    font-size: 1.02rem;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 700;
}

.howto-step p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.testimonial {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 30px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.testimonial::before {
    content: '"';
    position: absolute;
    top: 10px;
    right: 24px;
    font-size: 5rem;
    color: var(--accent-soft);
    font-family: Georgia, serif;
    line-height: 1;
    pointer-events: none;
}

.testimonial:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow);
}

.testimonial .stars {
    color: var(--gold);
    margin-bottom: 14px;
    font-size: 0.9rem;
    letter-spacing: 2px;
}

.testimonial p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-bottom: 18px;
    line-height: 1.85;
    font-style: italic;
    position: relative;
    z-index: 1;
}

.testimonial .author {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-primary);
}

.testimonial .role {
    font-size: 0.76rem;
    color: var(--text-muted);
    margin-top: 2px;
}

footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 64px 0 32px;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.5;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 44px;
}

.footer-col h4 {
    font-size: 0.98rem;
    margin-bottom: 18px;
    color: var(--text-primary);
    font-weight: 700;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 28px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}

.footer-col p {
    font-size: 0.84rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
    line-height: 1.8;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: var(--text-secondary);
    font-size: 0.84rem;
    transition: color var(--transition), padding-left var(--transition);
    display: inline-block;
}

.footer-col ul li a:hover {
    color: var(--accent);
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 28px;
    text-align: center;
    font-size: 0.78rem;
    color: var(--text-muted);
    line-height: 2;
}

.footer-bottom a {
    color: var(--text-secondary);
    transition: color var(--transition);
}

.footer-bottom a:hover {
    color: var(--accent);
}

.footer-bottom p {
    margin-bottom: 6px;
}

.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent), #c1121f);
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(16px);
    transition: all var(--transition);
    z-index: 999;
    box-shadow: 0 4px 20px rgba(230, 57, 70, 0.45);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px) scale(1.06);
    box-shadow: 0 8px 32px rgba(230, 57, 70, 0.6);
}

.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity, transform;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.card-grid .reveal:nth-child(1) { transition-delay: 0s; }
.card-grid .reveal:nth-child(2) { transition-delay: 0.08s; }
.card-grid .reveal:nth-child(3) { transition-delay: 0.16s; }
.card-grid .reveal:nth-child(4) { transition-delay: 0.24s; }
.card-grid .reveal:nth-child(5) { transition-delay: 0.32s; }
.card-grid .reveal:nth-child(6) { transition-delay: 0.4s; }

.testimonial-grid .reveal:nth-child(1) { transition-delay: 0s; }
.testimonial-grid .reveal:nth-child(2) { transition-delay: 0.1s; }
.testimonial-grid .reveal:nth-child(3) { transition-delay: 0.2s; }
.testimonial-grid .reveal:nth-child(4) { transition-delay: 0.3s; }

.article-list .reveal:nth-child(1) { transition-delay: 0s; }
.article-list .reveal:nth-child(2) { transition-delay: 0.05s; }
.article-list .reveal:nth-child(3) { transition-delay: 0.1s; }
.article-list .reveal:nth-child(4) { transition-delay: 0.15s; }
.article-list .reveal:nth-child(5) { transition-delay: 0.2s; }
.article-list .reveal:nth-child(6) { transition-delay: 0.25s; }
.article-list .reveal:nth-child(7) { transition-delay: 0.3s; }
.article-list .reveal:nth-child(8) { transition-delay: 0.35s; }
.article-list .reveal:nth-child(9) { transition-delay: 0.4s; }
.article-list .reveal:nth-child(10) { transition-delay: 0.45s; }

@media (max-width: 1024px) {
    .nav-links {
        gap: 4px;
    }
    .nav-links a {
        font-size: 0.82rem;
        padding: 6px 8px;
    }
    .search-box input {
        width: 100px;
    }
    .search-box input:focus {
        width: 140px;
    }
}

@media (max-width: 860px) {
    .nav-links {
        display: none;
    }

    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 68px;
        left: 0;
        right: 0;
        background: var(--bg-glass);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        padding: 20px 24px;
        border-bottom: 1px solid var(--border);
        gap: 6px;
        box-shadow: var(--shadow);
        animation: slideDown 0.3s ease;
    }

    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .nav-links.open a {
        padding: 12px 16px;
        font-size: 0.92rem;
        border-radius: var(--radius-sm);
        width: 100%;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .banner {
        min-height: 400px;
    }

    .banner-content {
        padding: 32px 0;
    }

    section {
        padding: 52px 0;
    }

    .section-subtitle {
        margin-bottom: 32px;
    }

    .card-grid {
        grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
        gap: 18px;
    }

    .howto-step {
        padding: 22px 22px 22px 68px;
    }

    .howto-step::before {
        left: 20px;
        top: 22px;
        width: 30px;
        height: 30px;
        font-size: 0.82rem;
    }
}

@media (max-width: 600px) {
    .container {
        padding: 0 16px;
    }

    .nav-inner {
        height: 60px;
        gap: 10px;
    }

    .logo {
        font-size: 1.2rem;
        letter-spacing: 1px;
    }

    .nav-links.open {
        top: 60px;
    }

    .search-box {
        display: none;
    }

    .theme-toggle,
    .mobile-menu-btn {
        width: 36px;
        height: 36px;
        font-size: 0.95rem;
    }

    .breadcrumb {
        font-size: 0.76rem;
        padding: 14px 0 4px;
    }

    .banner {
        min-height: 360px;
    }

    .banner h1 {
        font-size: 1.55rem;
        margin-bottom: 14px;
    }

    .banner p {
        font-size: 0.92rem;
        margin-bottom: 22px;
    }

    .banner-cta {
        padding: 12px 28px;
        font-size: 0.88rem;
    }

    .banner-dots {
        bottom: 20px;
    }

    section {
        padding: 44px 0;
    }

    .section-title {
        font-size: 1.3rem;
    }

    .section-subtitle {
        font-size: 0.88rem;
        margin-bottom: 28px;
    }

    .card-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .card {
        padding: 24px 20px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }

    .stat-item {
        padding: 26px 12px;
    }

    .stat-number {
        font-size: 1.9rem;
    }

    .stat-label {
        font-size: 0.78rem;
    }

    .article-item {
        padding: 20px 18px;
    }

    .article-item:hover {
        transform: none;
    }

    .article-item h3 {
        font-size: 1rem;
    }

    .faq-question {
        padding: 16px 18px;
        font-size: 0.9rem;
        gap: 10px;
    }

    .faq-answer {
        padding: 0 18px;
    }

    .faq-item.open .faq-answer {
        padding: 0 18px 18px;
    }

    .howto-step {
        padding: 20px 18px 20px 62px;
    }

    .howto-step::before {
        left: 16px;
        top: 20px;
        width: 28px;
        height: 28px;
        font-size: 0.78rem;
    }

    .howto-step h4 {
        font-size: 0.95rem;
    }

    .testimonial-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .testimonial {
        padding: 24px 20px;
    }

    .testimonial::before {
        font-size: 4rem;
        right: 16px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        font-size: 0.74rem;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
        font-size: 1.05rem;
    }
}

@media (max-width: 380px) {
    .banner h1 {
        font-size: 1.35rem;
    }

    .banner p {
        font-size: 0.85rem;
    }

    .stat-number {
        font-size: 1.6rem;
    }

    .stat-label {
        font-size: 0.72rem;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    .stat-item {
        padding: 20px 8px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}

@media print {
    .navbar,
    .back-to-top,
    .banner-dots,
    .theme-toggle,
    .mobile-menu-btn,
    .search-box {
        display: none !important;
    }

    body {
        background: #fff;
        color: #000;
    }

    .card,
    .article-item,
    .faq-item,
    .testimonial {
        border: 1px solid #ccc;
        break-inside: avoid;
    }
}