/* ============================================================
   HHpoker 德扑圈 - 清新渐变风 Fresh Gradient Theme
   ============================================================ */

/* --- CSS Variables --- */
:root {
    --blue-50: #eff6ff;
    --blue-100: #dbeafe;
    --blue-400: #60a5fa;
    --blue-500: #3b82f6;
    --blue-600: #2563eb;
    --blue-700: #1d4ed8;
    --teal-400: #2dd4bf;
    --teal-500: #14b8a6;
    --purple-400: #c084fc;
    --purple-500: #a855f7;
    --amber-400: #fbbf24;
    --amber-500: #f59e0b;
    --rose-400: #fb7185;
    --rose-500: #f43f5e;
    --green-400: #4ade80;
    --green-500: #22c55e;
    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-400: #94a3b8;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;
    --white: #ffffff;
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-3xl: 3rem;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.05), 0 2px 4px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.08), 0 4px 10px rgba(0,0,0,0.04);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.1);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--slate-800);
    background: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* --- Utility --- */
.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}
.section-header {
    text-align: center;
    margin-bottom: 3.5rem;
}
.section-tag {
    display: inline-block;
    padding: 0.35rem 1.25rem;
    background: linear-gradient(135deg, var(--blue-50), #e0f2fe);
    color: var(--blue-600);
    border-radius: var(--radius-3xl);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}
.section-title {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--slate-900);
    margin-bottom: 0.75rem;
    line-height: 1.3;
}
.section-desc {
    font-size: 1.05rem;
    color: var(--slate-400);
    max-width: 560px;
    margin: 0 auto;
}
.gradient-text {
    background: linear-gradient(135deg, var(--blue-500), var(--teal-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.9rem 2rem;
    border-radius: var(--radius-3xl);
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition);
    cursor: pointer;
    border: none;
}
.btn-primary {
    background: linear-gradient(135deg, var(--blue-500), var(--blue-600));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.5);
}
.btn-outline {
    background: rgba(255,255,255,0.15);
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.4);
    backdrop-filter: blur(10px);
}
.btn-outline:hover {
    background: rgba(255,255,255,0.25);
    transform: translateY(-2px);
}
.btn-white {
    background: var(--white);
    color: var(--blue-600);
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
}
.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}
.btn-white-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.6);
    padding: 0.9rem 2rem;
    border-radius: var(--radius-3xl);
    font-weight: 600;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition);
    backdrop-filter: blur(10px);
}
.btn-white-outline:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

/* ============================================================
   NAVIGATION - Glass morphism with colorful bottom indicator
   ============================================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0.75rem 0;
    transition: all var(--transition);
}
.nav.scrolled {
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem 0;
}
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-bottom-indicator {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--blue-500), var(--teal-400), var(--purple-500), var(--amber-400), var(--rose-500), var(--green-500));
    opacity: 0;
    transition: opacity var(--transition);
}
.nav.scrolled .nav-bottom-indicator { opacity: 1; }

/* Logo */
.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}
.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--blue-500), var(--teal-400));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.25rem;
}
.logo-text {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--white);
    transition: color var(--transition);
}
.nav.scrolled .logo-text { color: var(--slate-900); }
.logo-accent {
    background: linear-gradient(135deg, var(--teal-400), var(--blue-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Nav Links */
.nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}
.nav-link {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-3xl);
    font-weight: 500;
    font-size: 0.95rem;
    color: rgba(255,255,255,0.9);
    transition: all var(--transition);
    position: relative;
}
.nav.scrolled .nav-link { color: var(--slate-600); }
.nav-link:hover,
.nav-link.active {
    color: var(--white);
    background: rgba(255,255,255,0.15);
}
.nav.scrolled .nav-link:hover,
.nav.scrolled .nav-link.active {
    color: var(--blue-600);
    background: var(--blue-50);
}
.nav-link-cta {
    background: linear-gradient(135deg, var(--blue-500), var(--blue-600)) !important;
    color: var(--white) !important;
    padding: 0.5rem 1.25rem !important;
    box-shadow: 0 2px 10px rgba(59,130,246,.35);
}
.nav-link-cta:hover {
    box-shadow: 0 4px 15px rgba(59,130,246,.45) !important;
    transform: translateY(-1px);
}

/* Mobile Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 10;
}
.nav-toggle span {
    width: 26px;
    height: 2.5px;
    background: var(--white);
    border-radius: 2px;
    transition: all 0.3s ease;
}
.nav.scrolled .nav-toggle span { background: var(--slate-700); }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* ============================================================
   HERO - Full-screen animated gradient
   ============================================================ */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--blue-500), var(--teal-400), var(--purple-500));
    background-size: 400% 400%;
    animation: gradientShift 12s ease infinite;
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: 120px 0 80px;
}
@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    25% { background-position: 100% 0%; }
    50% { background-position: 100% 100%; }
    75% { background-position: 0% 100%; }
    100% { background-position: 0% 50%; }
}

/* Floating shapes */
.hero-bg-shapes { position: absolute; inset: 0; pointer-events: none; }
.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.15;
}
.shape-1 {
    width: 300px; height: 300px;
    background: var(--white);
    top: -80px; left: -60px;
    animation: floatShape 8s ease-in-out infinite;
}
.shape-2 {
    width: 180px; height: 180px;
    background: var(--blue-400);
    top: 15%; right: 8%;
    animation: floatShape 6s ease-in-out 1s infinite;
}
.shape-3 {
    width: 120px; height: 120px;
    background: var(--teal-400);
    bottom: 12%; left: 10%;
    animation: floatShape 7s ease-in-out 0.5s infinite;
}
.shape-4 {
    width: 80px; height: 80px;
    background: var(--purple-400);
    top: 50%; right: 30%;
    animation: floatShape 5s ease-in-out 1.5s infinite;
}
.shape-5 {
    width: 60px; height: 60px;
    background: var(--amber-400);
    bottom: 25%; right: 15%;
    animation: floatShape 6.5s ease-in-out 2s infinite;
}
.shape-6 {
    width: 200px; height: 200px;
    background: var(--rose-400);
    top: 60%; left: 50%;
    animation: floatShape 9s ease-in-out 0.8s infinite;
}
@keyframes floatShape {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-30px) scale(1.08); }
}

/* Hero Content */
.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    position: relative;
    z-index: 2;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1.25rem;
    background: rgba(255,255,255,0.2);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-3xl);
    color: var(--white);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}
.hero-badge i { color: #fbbf24; }
.hero-title {
    margin-bottom: 1.25rem;
    color: var(--white);
}
.title-line {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.25;
}
.title-line.accent {
    background: linear-gradient(90deg, #fff, #e0f2fe);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.title-sub {
    display: block;
    font-size: 1.25rem;
    font-weight: 500;
    margin-top: 0.5rem;
    opacity: 0.9;
}
.hero-desc {
    font-size: 1.05rem;
    color: rgba(255,255,255,0.85);
    line-height: 1.8;
    margin-bottom: 2rem;
    max-width: 520px;
}
.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2.5rem;
}
.hero-trust {
    display: flex;
    gap: 2rem;
}
.trust-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255,255,255,0.8);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Hero Image */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}
.hero-image-wrapper {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(0,0,0,0.2);
    transform: perspective(800px) rotateY(-5deg);
    transition: transform var(--transition);
}
.hero-image-wrapper:hover {
    transform: perspective(800px) rotateY(0deg);
}
.hero-image-wrapper img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-2xl);
}
.hero-image-glow {
    position: absolute;
    inset: -2px;
    border-radius: var(--radius-2xl);
    background: linear-gradient(135deg, rgba(255,255,255,0.3), transparent, rgba(255,255,255,0.2));
    pointer-events: none;
}
.hero-floating-card {
    position: absolute;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(15px);
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--slate-800);
    animation: floatCard 4s ease-in-out infinite;
}
.hero-floating-card.card-1 {
    top: 10%; left: -20px;
    animation-delay: 0s;
}
.hero-floating-card.card-2 {
    bottom: 15%; right: -15px;
    animation-delay: 1.5s;
}
.hero-floating-card i { font-size: 1.2rem; }
.card-1 i { color: #f59e0b; }
.card-2 i { color: #f43f5e; }

@keyframes floatCard {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

/* Pulse animation for CTA */
.pulse-animation {
    animation: pulse 2.5s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { box-shadow: 0 4px 15px rgba(59,130,246,0.4); }
    50% { box-shadow: 0 4px 30px rgba(59,130,246,0.7), 0 0 0 12px rgba(59,130,246,0.1); }
}

/* ============================================================
   FEATURES - White cards with colored top borders
   ============================================================ */
.features {
    padding: 100px 0;
    background: var(--slate-50);
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

/* Feature Card */
.feature-card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: 2.5rem 2rem;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: default;
}
.feature-card-top {
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 5px;
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}
.feature-card[data-color="blue"] .feature-card-top { background: var(--blue-500); }
.feature-card[data-color="teal"] .feature-card-top { background: var(--teal-500); }
.feature-card[data-color="purple"] .feature-card-top { background: var(--purple-500); }
.feature-card[data-color="amber"] .feature-card-top { background: var(--amber-500); }
.feature-card[data-color="rose"] .feature-card-top { background: var(--rose-500); }
.feature-card[data-color="green"] .feature-card-top { background: var(--green-500); }

.feature-card:hover {
    transform: translateY(-6px) rotateX(3deg);
    box-shadow: var(--shadow-xl);
}

/* Icon circles */
.feature-icon-circle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--white);
    margin-bottom: 1.5rem;
    flex-shrink: 0;
}
.gradient-blue { background: linear-gradient(135deg, #3b82f6, #60a5fa); }
.gradient-teal { background: linear-gradient(135deg, #14b8a6, #2dd4bf); }
.gradient-purple { background: linear-gradient(135deg, #a855f7, #c084fc); }
.gradient-amber { background: linear-gradient(135deg, #f59e0b, #fbbf24); }
.gradient-rose { background: linear-gradient(135deg, #f43f5e, #fb7185); }
.gradient-green { background: linear-gradient(135deg, #22c55e, #4ade80); }

.feature-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--slate-900);
    margin-bottom: 0.6rem;
}
.feature-card p {
    font-size: 0.95rem;
    color: var(--slate-400);
    line-height: 1.7;
}

/* ============================================================
   STATS - White cards with gradient number text
   ============================================================ */
.stats {
    padding: 80px 0;
    background: var(--white);
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}
.stat-card {
    text-align: center;
    padding: 2.5rem 1.5rem;
    background: var(--white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition);
}
.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.stat-icon-wrap {
    margin-bottom: 1rem;
}
.stat-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}
.stat-number {
    font-size: 2.75rem;
    font-weight: 800;
    line-height: 1.1;
}
.stat-unit {
    font-size: 1.5rem;
    font-weight: 600;
}
.stat-label {
    font-size: 0.95rem;
    color: var(--slate-400);
    font-weight: 500;
    margin-top: 0.5rem;
}
.gradient-blue-text {
    background: linear-gradient(135deg, var(--blue-500), var(--blue-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.gradient-teal-text {
    background: linear-gradient(135deg, var(--teal-500), var(--teal-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.gradient-purple-text {
    background: linear-gradient(135deg, var(--purple-500), var(--purple-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.gradient-amber-text {
    background: linear-gradient(135deg, var(--amber-500), var(--amber-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================================
   TESTIMONIALS
   ============================================================ */
.testimonials {
    padding: 100px 0;
    background: var(--slate-50);
}
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}
.testimonial-card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--slate-100);
}
.testimonial-card:hover {
    transform: translateY(-4px) rotateX(2deg);
    box-shadow: var(--shadow-lg);
}
.testimonial-stars {
    color: #f59e0b;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    display: flex;
    gap: 2px;
}
.testimonial-text {
    font-size: 0.95rem;
    color: var(--slate-600);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-style: italic;
}
.testimonial-author {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.testimonial-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--blue-100);
}
.testimonial-author strong {
    display: block;
    font-size: 0.95rem;
    color: var(--slate-800);
}
.testimonial-author span {
    font-size: 0.8rem;
    color: var(--slate-400);
}

/* ============================================================
   FAQ
   ============================================================ */
.faq {
    padding: 100px 0;
    background: var(--white);
}
.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.faq-item {
    background: var(--white);
    border: 1px solid var(--slate-100);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition);
}
.faq-item:hover {
    border-color: var(--blue-200);
    box-shadow: var(--shadow-sm);
}
.faq-item.active {
    border-color: var(--blue-300);
    box-shadow: 0 4px 15px rgba(59,130,246,0.08);
}
.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--slate-800);
    text-align: left;
    gap: 1rem;
    transition: all var(--transition);
}
.faq-item.active .faq-question {
    color: var(--blue-600);
}
.faq-icon {
    font-size: 0.8rem;
    color: var(--slate-400);
    transition: transform var(--transition);
    flex-shrink: 0;
}
.faq-item.active .faq-icon {
    transform: rotate(180deg);
    color: var(--blue-500);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}
.faq-item.active .faq-answer {
    max-height: 300px;
}
.faq-answer p {
    padding: 0 1.5rem 1.25rem;
    color: var(--slate-600);
    font-size: 0.95rem;
    line-height: 1.8;
}

/* ============================================================
   CTA SECTION - blue-600 gradient
   ============================================================ */
.cta-section {
    padding: 100px 0;
}
.cta-container {
    max-width: 1000px;
    margin: 0 auto;
    background: linear-gradient(135deg, var(--blue-600), var(--blue-500), var(--teal-500));
    border-radius: var(--radius-3xl);
    padding: 5rem 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    margin: 0 1.5rem;
}
.cta-content {
    position: relative;
    z-index: 2;
}
.cta-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 1rem;
}
.cta-highlight {
    background: rgba(255,255,255,0.2);
    padding: 0.15rem 0.75rem;
    border-radius: var(--radius-md);
}
.cta-desc {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.85);
    line-height: 1.8;
    margin-bottom: 2rem;
}
.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}
.cta-decoration {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}
.cta-circle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
}
.cta-circle-1 {
    width: 250px; height: 250px;
    top: -60px; right: -40px;
}
.cta-circle-2 {
    width: 150px; height: 150px;
    bottom: -30px; left: 10%;
}
.cta-circle-3 {
    width: 100px; height: 100px;
    top: 40%; left: -30px;
}

/* ============================================================
   FOOTER - 4 columns
   ============================================================ */
.footer {
    background: var(--slate-900);
    color: var(--white);
    padding: 70px 0 0;
}
.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 1rem;
}
.footer-logo .logo-icon {
    width: 36px; height: 36px;
    font-size: 1rem;
}
.footer-logo .logo-text { color: var(--white); font-size: 1.2rem; }
.footer-brand p {
    color: rgba(255,255,255,0.55);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 1.25rem;
}
.footer-social {
    display: flex;
    gap: 0.75rem;
}
.footer-social a {
    width: 38px; height: 38px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: rgba(255,255,255,0.7);
    transition: all var(--transition);
}
.footer-social a:hover {
    background: var(--blue-500);
    color: var(--white);
    transform: translateY(-2px);
}
.footer-col h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    color: var(--white);
}
.footer-col ul li {
    margin-bottom: 0.7rem;
}
.footer-col ul li a,
.footer-contact li {
    color: rgba(255,255,255,0.55);
    font-size: 0.9rem;
    transition: color var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.footer-col ul li a:hover {
    color: var(--blue-400);
}
.footer-contact li i {
    width: 20px;
    text-align: center;
    color: var(--blue-400);
}
.footer-bottom {
    padding: 1.5rem 0;
    text-align: center;
}
.footer-bottom p {
    color: rgba(255,255,255,0.35);
    font-size: 0.85rem;
}

/* ============================================================
   CUSTOMER SERVICE FLOATING
   ============================================================ */
.cs-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
}
.cs-toggle {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, #07c160, #06ad56);
    color: var(--white);
    border: none;
    cursor: pointer;
    font-size: 1.6rem;
    box-shadow: 0 6px 20px rgba(7,193,96,0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    position: relative;
    z-index: 2;
}
.cs-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 28px rgba(7,193,96,0.5);
}
.cs-toggle::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 3px solid rgba(7,193,96,0.3);
    animation: csPulse 2s ease-in-out infinite;
}
@keyframes csPulse {
    0%, 100% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1.15); opacity: 0; }
}
.cs-popup {
    position: absolute;
    bottom: 70px;
    right: 0;
    width: 280px;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
    overflow: hidden;
    transform: translateY(10px) scale(0.95);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
}
.cs-popup.active {
    transform: translateY(0) scale(1);
    opacity: 1;
    pointer-events: auto;
}
.cs-popup-header {
    background: linear-gradient(135deg, #07c160, #06ad56);
    color: var(--white);
    padding: 1rem 1.25rem;
    font-weight: 700;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.cs-popup-body {
    padding: 1.5rem 1.25rem;
    text-align: center;
}
.cs-popup-body > p {
    color: var(--slate-600);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}
.cs-qr {
    padding: 1.25rem;
    background: var(--slate-50);
    border-radius: var(--radius-lg);
    margin-bottom: 0.75rem;
}
.cs-qr-icon {
    font-size: 3rem;
    color: #07c160;
    display: block;
    margin-bottom: 0.5rem;
}
.cs-qr span {
    color: var(--slate-400);
    font-size: 0.85rem;
}
.cs-wechat-id {
    font-weight: 700;
    color: var(--slate-800);
    font-size: 1rem;
    margin-bottom: 1rem !important;
}
.cs-copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.6rem 1.5rem;
    background: linear-gradient(135deg, #07c160, #06ad56);
    color: var(--white);
    border-radius: var(--radius-3xl);
    font-size: 0.85rem;
    font-weight: 600;
    transition: all var(--transition);
}
.cs-copy-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(7,193,96,0.3);
}

/* ============================================================
   BACK TO TOP
   ============================================================ */
.back-to-top {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--white);
    color: var(--blue-500);
    border: 2px solid var(--blue-200);
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transform: translateY(10px);
    transition: all var(--transition);
    box-shadow: var(--shadow-md);
    z-index: 998;
}
.back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}
.back-to-top:hover {
    background: var(--blue-500);
    color: var(--white);
    border-color: var(--blue-500);
    transform: translateY(-3px);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-desc { margin: 0 auto 2rem; }
    .hero-cta { justify-content: center; }
    .hero-trust { justify-content: center; }
    .hero-image { order: -1; max-width: 400px; margin: 0 auto; }
    .hero-floating-card.card-1 { left: -10px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .section-title { font-size: 1.75rem; }
    .nav-links {
        position: fixed;
        top: 0; right: -100%;
        width: 75vw;
        max-width: 320px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        padding: 5rem 2rem 2rem;
        box-shadow: var(--shadow-xl);
        transition: right 0.35s ease;
        gap: 0.5rem;
    }
    .nav-links.active { right: 0; }
    .nav-links .nav-link {
        color: var(--slate-600);
        padding: 0.75rem 1rem;
        width: 100%;
        border-radius: var(--radius-lg);
    }
    .nav-links .nav-link:hover,
    .nav-links .nav-link.active {
        background: var(--blue-50);
        color: var(--blue-600);
    }
    .nav-links .nav-link-cta {
        text-align: center;
        margin-top: 0.5rem;
    }
    .nav-toggle { display: flex; }
    .title-line { font-size: 2.25rem; }
    .title-sub { font-size: 1.05rem; }
    .features-grid { grid-template-columns: 1fr 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .testimonials-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .cta-title { font-size: 1.75rem; }
    .cta-container { padding: 3rem 1.5rem; border-radius: var(--radius-2xl); }
    .hero { padding: 100px 0 60px; }
}

@media (max-width: 480px) {
    .features-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr; }
    .hero-cta { flex-direction: column; align-items: center; }
    .hero-trust { flex-wrap: wrap; gap: 1rem; }
    .title-line { font-size: 1.75rem; }
}