/* ========== Reset & Base ========== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #0071e3;
    --primary-dark: #0058b0;
    --navy: #0a1929;
    --navy-light: #112845;
    --text-dark: #1d1d1f;
    --text-gray: #6e6e73;
    --text-light: #f5f5f7;
    --bg-light: #f5f5f7;
    --bg-white: #ffffff;
    --accent: #34c759;
    --border: #d2d2d7;
    --radius: 18px;
    --radius-sm: 12px;
    --shadow: 0 4px 24px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 48px rgba(0,0,0,0.12);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", "Microsoft YaHei", sans-serif;
    color: var(--text-dark);
    background: var(--bg-white);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========== Navigation ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 1px 12px rgba(0,0,0,0.06);
}

.nav-container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--navy);
    letter-spacing: -0.02em;
}

.nav-logo .logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    object-fit: cover;
    display: block;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-menu a {
    font-size: 0.875rem;
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-menu a:hover {
    color: var(--primary);
}

.nav-cta {
    background: var(--primary);
    color: white !important;
    padding: 8px 20px;
    border-radius: 980px;
    font-size: 0.8125rem;
    font-weight: 600;
    transition: var(--transition);
}

.nav-cta:hover {
    background: var(--primary-dark);
    color: white !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: var(--transition);
}

/* ========== Hero ========== */
.hero {
    background: linear-gradient(135deg, #0a1929 0%, #0d2847 40%, #0a1929 100%);
    color: var(--text-light);
    padding: 140px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(0,113,227,0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(52,199,89,0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 760px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 113, 227, 0.15);
    border: 1px solid rgba(0, 113, 227, 0.3);
    color: #4d9fff;
    padding: 6px 16px;
    border-radius: 980px;
    font-size: 0.8125rem;
    font-weight: 600;
    margin-bottom: 28px;
}

.hero-badge .dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.hero h1 .gradient-text {
    background: linear-gradient(135deg, #00c6ff, #0071e3, #0058b0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.25rem;
    color: rgba(255,255,255,0.7);
    line-height: 1.6;
    margin-bottom: 40px;
    max-width: 620px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-primary {
    background: var(--primary);
    color: white;
    padding: 14px 32px;
    border-radius: 980px;
    font-size: 1rem;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,113,227,0.3);
}

.btn-secondary {
    background: rgba(255,255,255,0.1);
    color: white;
    padding: 14px 32px;
    border-radius: 980px;
    font-size: 1rem;
    font-weight: 600;
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,0.2);
    cursor: pointer;
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.15);
    border-color: rgba(255,255,255,0.4);
}

.hero-stats {
    display: flex;
    gap: 48px;
    margin-top: 64px;
    padding-top: 40px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.hero-stat .num {
    font-size: 2.5rem;
    font-weight: 800;
    color: white;
    letter-spacing: -0.02em;
}

.hero-stat .label {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.5);
    margin-top: 4px;
}

/* ========== Section Base ========== */
section {
    padding: 100px 0;
}

.section-tag {
    display: inline-block;
    color: var(--primary);
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-gray);
    max-width: 640px;
    margin-bottom: 56px;
}

/* ========== About ========== */
.about {
    background: var(--bg-light);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-text h2 {
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.about-text p {
    font-size: 1.0625rem;
    color: var(--text-gray);
    margin-bottom: 16px;
    line-height: 1.7;
}

.about-text .highlight {
    color: var(--primary);
    font-weight: 600;
}

.about-features {
    display: grid;
    gap: 20px;
    margin-top: 32px;
}

.about-feature {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.about-feature .check {
    width: 24px;
    height: 24px;
    background: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 2px;
}

.about-feature .check svg {
    width: 14px;
    height: 14px;
    fill: white;
}

.about-feature p {
    font-size: 0.9375rem;
    color: var(--text-dark);
    margin: 0;
}

.about-visual {
    position: relative;
}

.about-card {
    background: white;
    border-radius: var(--radius);
    padding: 36px;
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 2;
}

.about-card .card-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary), #00c6ff);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.about-card .card-icon svg {
    width: 28px;
    height: 28px;
    fill: white;
}

.about-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.about-card p {
    font-size: 0.9375rem;
    color: var(--text-gray);
    margin-bottom: 20px;
}

.about-card .cert-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.cert-tag {
    background: var(--bg-light);
    color: var(--text-dark);
    padding: 6px 14px;
    border-radius: 980px;
    font-size: 0.8125rem;
    font-weight: 600;
    border: 1px solid var(--border);
}

.about-card-bg {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0,113,227,0.08), rgba(0,198,255,0.05));
    border-radius: var(--radius);
    z-index: 1;
}

/* ========== Services ========== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.service-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: transparent;
}

.service-card .service-num {
    position: absolute;
    top: 24px;
    right: 32px;
    font-size: 3rem;
    font-weight: 800;
    color: var(--bg-light);
    line-height: 1;
    transition: var(--transition);
}

.service-card:hover .service-num {
    color: rgba(0,113,227,0.08);
}

.service-icon {
    width: 52px;
    height: 52px;
    border-radius: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.service-icon svg {
    width: 26px;
    height: 26px;
    fill: white;
}

.service-card h3 {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.service-card p {
    font-size: 0.9375rem;
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 20px;
}

.service-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.service-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.875rem;
    color: var(--text-dark);
}

.service-list li::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

.service-card:nth-child(1) .service-icon { background: linear-gradient(135deg, #0071e3, #0058b0); }
.service-card:nth-child(1) .service-list li::before { background: #0071e3; }

.service-card:nth-child(2) .service-icon { background: linear-gradient(135deg, #34c759, #2aa046); }
.service-card:nth-child(2) .service-list li::before { background: #34c759; }

.service-card:nth-child(3) .service-icon { background: linear-gradient(135deg, #ff9500, #e08600); }
.service-card:nth-child(3) .service-list li::before { background: #ff9500; }

.service-card:nth-child(4) .service-icon { background: linear-gradient(135deg, #af52de, #8e3fc0); }
.service-card:nth-child(4) .service-list li::before { background: #af52de; }

/* ========== News ========== */
.news {
    background: var(--bg-white);
}

.news-featured {
    display: grid;
    grid-template-columns: 5fr 7fr;
    gap: 48px;
    align-items: center;
    background: var(--bg-light);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.news-image {
    height: 100%;
    min-height: 420px;
    background: linear-gradient(135deg, var(--navy), #0d2847);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.news-image::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 70%, rgba(0,113,227,0.2) 0%, transparent 50%),
                radial-gradient(circle at 70% 30%, rgba(52,199,89,0.1) 0%, transparent 40%);
}

.news-image svg {
    width: 80px;
    height: 80px;
    position: relative;
    z-index: 2;
    opacity: 0.9;
}

.news-badge {
    position: absolute;
    top: 24px;
    left: 24px;
    background: var(--primary);
    color: white;
    padding: 6px 16px;
    border-radius: 980px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    z-index: 2;
}

.news-content {
    padding: 44px 48px 44px 0;
}

.news-meta {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
    font-size: 0.8125rem;
    color: var(--text-gray);
}

.news-content h3 {
    font-size: 1.5rem;
    font-weight: 800;
    line-height: 1.35;
    color: var(--text-dark);
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.news-content p {
    font-size: 0.9375rem;
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 16px;
}

.news-lead {
    font-size: 1rem !important;
    color: var(--text-dark) !important;
    font-weight: 500;
}

.news-highlights {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin: 24px 0;
    padding: 20px;
    background: white;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.nh-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.875rem;
    color: var(--text-dark);
    font-weight: 500;
}

.nh-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.news-readmore {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--primary);
    color: white;
    padding: 12px 24px;
    border-radius: 980px;
    font-size: 0.9375rem;
    font-weight: 600;
    transition: var(--transition);
    margin-top: 8px;
}

.news-readmore:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,113,227,0.25);
}

@media (max-width: 968px) {
    .news-featured {
        grid-template-columns: 1fr;
    }
    .news-image {
        min-height: 220px;
    }
    .news-content {
        padding: 32px 24px;
    }
    .news-highlights {
        grid-template-columns: 1fr;
    }
}

/* ========== Process ========== */
.process {
    background: var(--navy);
    color: var(--text-light);
}

.process .section-title {
    color: var(--text-light);
}

.process .section-subtitle {
    color: rgba(255,255,255,0.6);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 32px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: linear-gradient(90deg, rgba(0,113,227,0.3), rgba(0,198,255,0.3), rgba(52,199,89,0.3), rgba(175,82,222,0.3), rgba(255,149,0,0.3));
}

.process-step {
    text-align: center;
    position: relative;
    z-index: 2;
}

.step-circle {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.5rem;
    font-weight: 800;
    color: white;
    border: 3px solid var(--navy);
    position: relative;
    z-index: 2;
}

.process-step:nth-child(1) .step-circle { background: linear-gradient(135deg, #0071e3, #0058b0); }
.process-step:nth-child(2) .step-circle { background: linear-gradient(135deg, #00c6ff, #0071e3); }
.process-step:nth-child(3) .step-circle { background: linear-gradient(135deg, #34c759, #2aa046); }
.process-step:nth-child(4) .step-circle { background: linear-gradient(135deg, #af52de, #8e3fc0); }
.process-step:nth-child(5) .step-circle { background: linear-gradient(135deg, #ff9500, #e07c00); }

.process-step h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: white;
}

.process-step p {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.55);
    line-height: 1.6;
}

/* ========== Why Choose Us ========== */
.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.why-card {
    text-align: center;
    padding: 40px 28px;
}

.why-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    transition: var(--transition);
}

.why-card:hover .why-icon {
    transform: scale(1.08) rotate(-5deg);
}

.why-icon svg {
    width: 32px;
    height: 32px;
}

.why-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.why-card p {
    font-size: 0.9375rem;
    color: var(--text-gray);
    line-height: 1.7;
}

/* ========== Comparison ========== */
.comparison {
    background: var(--bg-light);
}

.comparison-table {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
}

.comparison-table th,
.comparison-table td {
    padding: 20px 24px;
    text-align: left;
    font-size: 0.9375rem;
    border-bottom: 1px solid var(--border);
}

.comparison-table th {
    font-weight: 700;
    color: var(--text-dark);
    background: var(--bg-light);
}

.comparison-table th.col-us {
    background: var(--navy);
    color: white;
    border-radius: 0;
}

.comparison-table td.col-us {
    background: rgba(0,113,227,0.04);
    font-weight: 600;
    color: var(--primary);
}

.comparison-table tr:last-child th,
.comparison-table tr:last-child td {
    border-bottom: none;
}

.check-icon {
    color: var(--accent);
    font-weight: 700;
    font-size: 1.125rem;
}

.cross-icon {
    color: #ff3b30;
    font-weight: 700;
    font-size: 1.125rem;
}

.partial-icon {
    color: #ff9500;
    font-weight: 700;
}

/* ========== Contact ========== */
.contact {
    background: var(--navy);
    color: var(--text-light);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0,113,227,0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.contact-content {
    position: relative;
    z-index: 2;
}

.contact h2 {
    font-size: 2.75rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
    color: white;
}

.contact p {
    font-size: 1.125rem;
    color: rgba(255,255,255,0.6);
    margin-bottom: 40px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 800px;
    margin: 0 auto 40px;
}

.contact-card {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-sm);
    padding: 28px 20px;
    text-align: center;
    transition: var(--transition);
}

.contact-card:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.2);
}

.contact-card .cc-icon {
    width: 44px;
    height: 44px;
    margin: 0 auto 16px;
    border-radius: 12px;
    background: rgba(0,113,227,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-card .cc-icon svg {
    width: 22px;
    height: 22px;
    fill: #4d9fff;
}

.contact-card .cc-label {
    font-size: 0.8125rem;
    color: rgba(255,255,255,0.5);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-card .cc-value {
    font-size: 1rem;
    font-weight: 600;
    color: white;
}

.contact-cta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--primary);
    color: white;
    padding: 16px 40px;
    border-radius: 980px;
    font-size: 1.0625rem;
    font-weight: 700;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.contact-cta:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(0,113,227,0.4);
}

.contact-qr {
    display: inline-flex;
    align-items: center;
    gap: 24px;
    background: white;
    border-radius: var(--radius);
    padding: 24px 32px;
    box-shadow: 0 16px 48px rgba(0,0,0,0.2);
    margin-top: 8px;
    text-align: left;
}

.contact-qr img {
    width: 120px;
    height: 120px;
    border-radius: 12px;
    object-fit: cover;
    flex-shrink: 0;
    border: 1px solid var(--border);
}

.contact-qr-text {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.contact-qr-text strong {
    font-size: 1.0625rem;
    color: var(--text-dark);
    font-weight: 700;
}

.contact-qr-text span {
    font-size: 0.875rem;
    color: var(--text-gray);
    line-height: 1.5;
}

.contact-qr-text small {
    font-size: 0.75rem;
    color: #999;
    margin-top: 4px;
}

@media (max-width: 568px) {
    .contact-qr {
        flex-direction: column;
        text-align: center;
        padding: 24px;
    }

    .contact-qr img {
        width: 140px;
        height: 140px;
    }
}

/* ========== Footer ========== */
footer {
    background: #060f1c;
    color: rgba(255,255,255,0.5);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .nav-logo {
    color: white;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 0.875rem;
    line-height: 1.6;
    max-width: 320px;
}

.footer-col h5 {
    color: white;
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col ul a {
    font-size: 0.8125rem;
    transition: var(--transition);
}

.footer-col ul a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8125rem;
}

.footer-bottom .icp {
    display: flex;
    gap: 16px;
}

/* ========== Floating WeChat QR ========== */
.wechat-float {
    position: fixed;
    bottom: 32px;
    right: 32px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 12px;
}

.wechat-float-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, #07c160, #05a350);
    box-shadow: 0 8px 28px rgba(7, 193, 96, 0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    outline: none;
}

.wechat-float-btn:hover {
    transform: scale(1.08) translateY(-2px);
    box-shadow: 0 12px 36px rgba(7, 193, 96, 0.45);
}

.wechat-float-btn svg {
    width: 30px;
    height: 30px;
    fill: white;
}

.wechat-float-panel {
    width: 220px;
    background: white;
    border-radius: 20px;
    padding: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.18);
    text-align: center;
    opacity: 0;
    transform: translateY(12px) scale(0.95);
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    border: 1px solid var(--border);
}

.wechat-float.active .wechat-float-panel {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.wechat-float-panel img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    margin-bottom: 12px;
}

.wechat-float-panel p {
    font-size: 0.875rem;
    color: var(--text-dark);
    font-weight: 600;
    line-height: 1.4;
}

.wechat-float-panel span {
    display: block;
    font-size: 0.75rem;
    color: var(--text-gray);
    margin-top: 4px;
    font-weight: 400;
}

@media (max-width: 568px) {
    .wechat-float {
        bottom: 20px;
        right: 20px;
    }

    .wechat-float-panel {
        width: 180px;
        padding: 16px;
    }
}

/* ========== Animations ========== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========== Responsive ========== */
@media (max-width: 968px) {
    .nav-menu {
        display: none;
        position: fixed;
        top: 56px;
        left: 0;
        width: 100%;
        background: rgba(255,255,255,0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid var(--border);
    }

    .nav-menu.open {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .hero h1 {
        font-size: 2.25rem;
    }

    .hero p {
        font-size: 1.0625rem;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 24px;
    }

    .about-grid,
    .services-grid,
    .why-grid,
    .contact-cards {
        grid-template-columns: 1fr;
    }

    .process-steps {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px 24px;
    }

    .process-steps::before {
        display: none;
    }

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

    section {
        padding: 64px 0;
    }

    .section-title {
        font-size: 1.875rem;
    }

    .contact h2 {
        font-size: 2rem;
    }
}

@media (max-width: 568px) {
    .hero h1 {
        font-size: 1.875rem;
    }

    .process-steps {
        grid-template-columns: 1fr;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .hero-stat .num {
        font-size: 2rem;
    }
}