*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:root {
    --primary: #1a2a3a;
    --accent: #e8a33d;
    --accent-hover: #d4922e;
    --bg-light: #f8f6f2;
    --bg-white: #ffffff;
    --text-dark: #1e1e1e;
    --text-body: #3a3a3a;
    --text-muted: #6b6b6b;
    --border-light: #e0ddd7;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.10);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.14);
    --radius: 10px;
    --radius-sm: 6px;
    --radius-lg: 18px;
    --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    --max-width: 1200px;
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.14);
}
html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}
body {
    font-family: var(--font-stack);
    color: var(--text-body);
    background: var(--bg-light);
    line-height: 1.75;
    padding-top: 68px;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background var(--transition), color var(--transition);
}
img,
svg {
    max-width: 100%;
    height: auto;
    display: block;
}
a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition);
}
a:hover {
    color: var(--accent);
}
ul,
ol {
    list-style: none;
}
button {
    font-family: var(--font-stack);
}
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}
::selection {
    background: rgba(232, 163, 61, 0.28);
    color: var(--text-dark);
}
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(26, 42, 58, 0.92);
    backdrop-filter: blur(16px) saturate(160%);
    -webkit-backdrop-filter: blur(16px) saturate(160%);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.14);
    height: 68px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: background var(--transition), box-shadow var(--transition);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    gap: 20px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.35rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.5px;
    flex-shrink: 0;
    transition: transform var(--transition);
}
.logo:hover {
    transform: translateY(-1px);
    color: #fff;
}
.logo svg {
    width: 34px;
    height: 34px;
    transition: transform var(--transition);
}
.logo:hover svg {
    transform: rotate(-6deg) scale(1.06);
}
.logo span {
    color: var(--accent);
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
}
.nav-links a {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    padding: 4px 0;
    white-space: nowrap;
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
    transition: width var(--transition);
}
.nav-links a:hover {
    color: #fff;
}
.nav-links a:hover::after {
    width: 100%;
}
.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}
.search-box {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.10);
    border-radius: 20px;
    padding: 4px 14px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: background var(--transition), border var(--transition), box-shadow var(--transition);
}
.search-box:focus-within {
    background: rgba(255, 255, 255, 0.18);
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(232, 163, 61, 0.15);
}
.search-box input {
    background: transparent;
    border: none;
    outline: none;
    color: #fff;
    font-size: 0.85rem;
    width: 140px;
    font-family: var(--font-stack);
}
.search-box input::placeholder {
    color: rgba(255, 255, 255, 0.45);
}
.search-box button {
    background: transparent;
    border: none;
    cursor: pointer;
    color: rgba(255, 255, 255, 0.7);
    display: flex;
    align-items: center;
    padding: 2px;
    transition: color var(--transition), transform var(--transition);
}
.search-box button:hover {
    color: var(--accent);
    transform: scale(1.1);
}
.theme-toggle {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: rgba(255, 255, 255, 0.8);
    transition: background var(--transition), border var(--transition), color var(--transition), transform var(--transition);
}
.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent);
    color: var(--accent);
    transform: rotate(18deg);
}
.mobile-menu-btn {
    display: none;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    padding: 6px 10px;
    cursor: pointer;
    color: #fff;
    font-size: 1.2rem;
    line-height: 1;
    transition: background var(--transition), border var(--transition);
}
.mobile-menu-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent);
}
.breadcrumb {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-light);
    padding: 14px 0;
    font-size: 0.85rem;
    color: var(--text-muted);
    transition: background var(--transition), border-color var(--transition);
}
.breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    list-style: none;
}
.breadcrumb li {
    display: flex;
    align-items: center;
    gap: 6px;
}
.breadcrumb li:not(:last-child)::after {
    content: '›';
    color: #bbb;
    margin-left: 6px;
}
.breadcrumb a {
    color: var(--text-muted);
}
.breadcrumb a:hover {
    color: var(--accent);
}
.breadcrumb [aria-current="page"] {
    color: var(--text-dark);
    font-weight: 500;
}
.hero {
    position: relative;
    background: linear-gradient(135deg, #1a2a3a 0%, #2a3f55 45%, #1e3245 100%);
    color: #fff;
    overflow: hidden;
    min-height: 480px;
    display: flex;
    align-items: center;
    transition: background 0.6s ease;
}
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 640px;
    height: 640px;
    background: radial-gradient(circle, rgba(232, 163, 61, 0.16) 0%, transparent 68%);
    border-radius: 50%;
    pointer-events: none;
    animation: heroFloat 12s ease-in-out infinite;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -40%;
    left: -10%;
    width: 540px;
    height: 540px;
    background: radial-gradient(circle, rgba(232, 163, 61, 0.10) 0%, transparent 68%);
    border-radius: 50%;
    pointer-events: none;
    animation: heroFloat 15s ease-in-out infinite reverse;
}
@keyframes heroFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-24px, 24px) scale(1.06); }
}
.hero-inner {
    position: relative;
    z-index: 2;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 60px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
    width: 100%;
}
.hero-content {
    flex: 1;
    max-width: 600px;
}
.hero-badge {
    display: inline-block;
    background: rgba(232, 163, 61, 0.18);
    color: var(--accent);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 20px;
    margin-bottom: 20px;
    letter-spacing: 1px;
    border: 1px solid rgba(232, 163, 61, 0.25);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
.hero h1 {
    font-size: 2.6rem;
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 18px;
    letter-spacing: -0.5px;
}
.hero h1 span {
    color: var(--accent);
}
.hero p {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.78);
    margin-bottom: 32px;
    line-height: 1.8;
    max-width: 520px;
}
.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 30px;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all var(--transition);
    font-family: var(--font-stack);
    text-decoration: none;
    white-space: nowrap;
}
.btn-primary {
    background: var(--accent);
    color: #1a2a3a;
    box-shadow: 0 4px 16px rgba(232, 163, 61, 0.28);
}
.btn-primary:hover {
    background: var(--accent-hover);
    color: #1a2a3a;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(232, 163, 61, 0.4);
}
.btn-outline {
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
    background: rgba(232, 163, 61, 0.08);
}
.hero-visual {
    flex: 0 0 380px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-visual svg {
    width: 100%;
    max-width: 380px;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.3));
    animation: heroVisualFloat 8s ease-in-out infinite;
}
@keyframes heroVisualFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-14px); }
}
.hero-dots {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 5;
}
.hero-dots button {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.35);
    cursor: pointer;
    transition: background var(--transition), transform var(--transition), width var(--transition);
    padding: 0;
}
.hero-dots button:hover {
    background: rgba(255, 255, 255, 0.6);
}
.hero-dots button.active {
    background: var(--accent);
    transform: scale(1.3);
    width: 24px;
    border-radius: 6px;
}
.section {
    padding: 72px 0;
    transition: background var(--transition);
}
.section-alt {
    background: var(--bg-white);
}
.section-header {
    text-align: center;
    margin-bottom: 48px;
}
.section-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
    letter-spacing: -0.3px;
}
.section-header h2 span {
    color: var(--accent);
}
.section-header p {
    color: var(--text-muted);
    font-size: 1rem;
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.8;
}
.section-header .divider {
    width: 56px;
    height: 3px;
    background: var(--accent);
    margin: 16px auto 0;
    border-radius: 2px;
}
.brand-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}
.brand-text h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
}
.brand-text p {
    margin-bottom: 16px;
    line-height: 1.9;
    color: var(--text-body);
}
.brand-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 32px;
}
.stat-item {
    text-align: center;
    padding: 20px 12px;
    background: var(--bg-white);
    border-radius: var(--radius);
    border: 1px solid var(--border-light);
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.stat-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-sm);
}
.stat-number {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--accent);
    line-height: 1.2;
}
.stat-label {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-top: 4px;
}
.brand-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}
.brand-visual svg {
    width: 100%;
    max-width: 440px;
    filter: drop-shadow(0 12px 32px rgba(0, 0, 0, 0.08));
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.feature-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 36px 28px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
}
.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(232, 163, 61, 0.35);
}
.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(232, 163, 61, 0.15), rgba(232, 163, 61, 0.05));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--accent);
    transition: transform var(--transition), background var(--transition);
}
.feature-card:hover .feature-icon {
    transform: scale(1.08) rotate(-4deg);
    background: linear-gradient(135deg, rgba(232, 163, 61, 0.25), rgba(232, 163, 61, 0.08));
}
.feature-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
}
.feature-card p {
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.8;
}
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}
.solution-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 36px 32px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
    position: relative;
    overflow: hidden;
}
.solution-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--accent);
    opacity: 0;
    transition: opacity var(--transition);
}
.solution-card:hover::before {
    opacity: 1;
}
.solution-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.solution-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}
.solution-card p {
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 16px;
}
.solution-card ul {
    list-style: none;
    padding: 0;
}
.solution-card ul li {
    font-size: 0.88rem;
    color: var(--text-body);
    padding: 5px 0 5px 22px;
    position: relative;
    transition: color var(--transition);
}
.solution-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 700;
    font-size: 0.85rem;
}
.solution-card:hover ul li {
    color: var(--text-dark);
}
.articles-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}
.article-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 30px 28px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
    display: flex;
    flex-direction: column;
}
.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(232, 163, 61, 0.3);
}
.article-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 14px;
}
.article-meta .tag {
    background: rgba(232, 163, 61, 0.12);
    color: var(--accent);
    padding: 3px 12px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.75rem;
    transition: background var(--transition);
}
.article-card:hover .article-meta .tag {
    background: rgba(232, 163, 61, 0.22);
}
.article-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
    line-height: 1.5;
    transition: color var(--transition);
}
.article-card:hover h3 {
    color: var(--accent);
}
.article-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.8;
    flex: 1;
}
.article-card .read-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--accent);
    transition: gap var(--transition);
}
.article-card .read-more:hover {
    gap: 10px;
}
.faq-list {
    max-width: 900px;
    margin: 0 auto;
}
.faq-item {
    background: var(--bg-white);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
    margin-bottom: 12px;
    overflow: hidden;
    transition: box-shadow var(--transition), border-color var(--transition), background var(--transition);
}
.faq-item:hover {
    box-shadow: var(--shadow-sm);
    border-color: rgba(232, 163, 61, 0.3);
}
.faq-item.open {
    border-color: rgba(232, 163, 61, 0.4);
    box-shadow: var(--shadow-sm);
}
.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    text-align: left;
    font-family: var(--font-stack);
    line-height: 1.5;
    transition: color var(--transition);
}
.faq-question:hover {
    color: var(--accent);
}
.faq-question .faq-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition);
    color: var(--accent);
    font-size: 1.2rem;
}
.faq-item.open .faq-question .faq-icon {
    transform: rotate(45deg);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
    padding: 0 24px;
}
.faq-item.open .faq-answer {
    max-height: 600px;
    padding: 0 24px 22px;
}
.faq-answer p {
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.85;
}
.howto-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    counter-reset: step;
}
.howto-step {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 32px 24px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    position: relative;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
}
.howto-step:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(232, 163, 61, 0.3);
}
.howto-step::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    top: -14px;
    left: 24px;
    width: 32px;
    height: 32px;
    background: var(--accent);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    box-shadow: 0 4px 12px rgba(232, 163, 61, 0.35);
    transition: transform var(--transition);
}
.howto-step:hover::before {
    transform: scale(1.1);
}
.howto-step h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
    margin-top: 6px;
}
.howto-step p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.8;
}
.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.contact-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 36px 28px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
}
.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(232, 163, 61, 0.3);
}
.contact-card .contact-icon {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: rgba(232, 163, 61, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
    color: var(--accent);
    transition: transform var(--transition), background var(--transition);
}
.contact-card:hover .contact-icon {
    transform: scale(1.1);
    background: rgba(232, 163, 61, 0.2);
}
.contact-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}
.contact-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.8;
}
.contact-card a {
    color: var(--accent);
    font-weight: 600;
}
.contact-card a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}
.site-footer {
    background: var(--primary);
    color: rgba(255, 255, 255, 0.7);
    padding: 56px 0 0;
    transition: background var(--transition);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
}
.footer-brand p {
    font-size: 0.88rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 16px;
}
.footer-col h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}
.footer-col ul li {
    margin-bottom: 10px;
}
.footer-col ul li a {
    color: rgba(255, 255, 255, 0.55);
    font-size: 0.88rem;
    transition: color var(--transition), padding-left var(--transition);
}
.footer-col ul li a:hover {
    color: var(--accent);
    padding-left: 4px;
}
.footer-bottom {
    padding: 24px 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.4);
}
.footer-bottom a {
    color: rgba(255, 255, 255, 0.5);
}
.footer-bottom a:hover {
    color: var(--accent);
}
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--accent);
    color: #1a2a3a;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(232, 163, 61, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: all var(--transition);
    z-index: 900;
}
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.back-to-top:hover {
    background: var(--accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(232, 163, 61, 0.5);
}
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}
body.dark-mode {
    --bg-light: #121a24;
    --bg-white: #1a2635;
    --text-dark: #e8e8e8;
    --text-body: #c8cdd4;
    --text-muted: #8899aa;
    --border-light: #2a3a4a;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
    --glass-bg: rgba(255, 255, 255, 0.04);
    --glass-border: rgba(255, 255, 255, 0.08);
}
body.dark-mode .site-header {
    background: rgba(18, 26, 36, 0.94);
}
body.dark-mode .breadcrumb {
    background: var(--bg-white);
}
body.dark-mode .feature-card,
body.dark-mode .solution-card,
body.dark-mode .article-card,
body.dark-mode .faq-item,
body.dark-mode .howto-step,
body.dark-mode .contact-card {
    background: var(--bg-white);
}
body.dark-mode .stat-item {
    background: rgba(255, 255, 255, 0.04);
}
body.dark-mode .hero {
    background: linear-gradient(135deg, #0f1820 0%, #16222e 45%, #101c26 100%);
}
body.dark-mode .btn-outline {
    background: rgba(255, 255, 255, 0.04);
}
.mobile-nav {
    display: none;
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(18, 26, 36, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 999;
    padding: 32px 24px;
    flex-direction: column;
    gap: 8px;
    overflow-y: auto;
    animation: mobileNavIn 0.3s ease;
}
@keyframes mobileNavIn {
    from { opacity: 0; transform: translateY(-12px); }
    to { opacity: 1; transform: translateY(0); }
}
.mobile-nav.open {
    display: flex;
}
.mobile-nav a {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.05rem;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    font-weight: 500;
    transition: color var(--transition), padding-left var(--transition);
}
.mobile-nav a:hover {
    color: var(--accent);
    padding-left: 6px;
}
@media (max-width: 1024px) {
    .hero h1 { font-size: 2.1rem; }
    .hero-visual { flex: 0 0 300px; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .howto-steps { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    body { padding-top: 62px; }
    .site-header { height: 62px; }
    .header-inner { height: 62px; padding: 0 16px; }
    .nav-links { display: none; }
    .search-box { display: none; }
    .mobile-menu-btn { display: block; }
    .mobile-nav { top: 62px; }
    .hero-inner { flex-direction: column; text-align: center; padding: 48px 24px; }
    .hero-content { max-width: 100%; }
    .hero h1 { font-size: 1.7rem; }
    .hero p { margin: 0 auto 28px; font-size: 0.95rem; }
    .hero-actions { justify-content: center; }
    .hero-visual { flex: 0 0 auto; max-width: 280px; }
    .brand-grid { grid-template-columns: 1fr; gap: 36px; }
    .features-grid { grid-template-columns: 1fr; }
    .solutions-grid { grid-template-columns: 1fr; }
    .articles-grid { grid-template-columns: 1fr; }
    .howto-steps { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .section { padding: 48px 0; }
    .section-header h2 { font-size: 1.5rem; }
    .brand-stats { grid-template-columns: repeat(3, 1fr); gap: 10px; }
    .stat-number { font-size: 1.3rem; }
    .back-to-top { bottom: 20px; right: 20px; width: 42px; height: 42px; }
}
@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .hero h1 { font-size: 1.45rem; }
    .hero-actions { flex-direction: column; align-items: center; }
    .btn { width: 100%; justify-content: center; }
    .brand-stats { grid-template-columns: 1fr; }
    .hero-badge { font-size: 0.72rem; padding: 5px 12px; }
}
@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 {
    .site-header,
    .mobile-nav,
    .back-to-top,
    .hero-dots,
    .search-box,
    .theme-toggle,
    .mobile-menu-btn {
        display: none !important;
    }
    body { padding-top: 0; }
    .hero { min-height: auto; }
}