/* ===== 导航 ===== */
nav {
    position: fixed;
    top: 0; width: 100%;
    padding: 0.875rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    background: rgba(6, 8, 16, 0.85);
    backdrop-filter: blur(24px);
    border-bottom: 1px solid rgba(79, 70, 229, 0.08);
    transition: all 0.4s ease;
}
nav.scrolled {
    background: rgba(6, 8, 16, 0.97);
    box-shadow: 0 4px 40px rgba(0,0,0,0.5);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}
.logo-mark {
    width: 42px; height: 42px;
    background: var(--gradient-main);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: #fff;
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}
.logo-mark::after {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.15), transparent 60%);
}
.logo-text {
    display: flex;
    flex-direction: column;
}
.logo-name {
    font-family: 'Noto Sans SC', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--light);
    line-height: 1.2;
    letter-spacing: 2px;
}
.logo-name span {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.logo-sub {
    font-size: 0.65rem;
    color: var(--gray-500);
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
    align-items: center;
}
/* 桌面端：将菜单定位到 nav 内部右侧 */
@media (min-width: 769px) {
    .nav-links {
        position: fixed;
        top: 0.875rem;
        right: 5%;
        z-index: 1000;
    }
    .mobile-toggle { display: none; }
    .mobile-overlay { display: none; }
}
.nav-links a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0; width: 0; height: 2px;
    background: var(--gradient-accent);
    transition: width 0.3s;
}
.nav-links a:hover { color: var(--light); }
.nav-links a:hover::after { width: 100%; }

.nav-cta {
    padding: 0.55rem 1.5rem;
    background: var(--gradient-main);
    border: none;
    border-radius: 10px;
    color: #fff;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}
.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(79,70,229,0.45);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 4px;
}
.mobile-toggle span {
    width: 24px; height: 2px;
    background: var(--light);
    border-radius: 2px;
    transition: all 0.3s;
}

/* ===== HERO ===== */
.hero {
    min-height: 100vh;
    background: var(--gradient-hero);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -30%; right: -15%;
    width: 700px; height: 700px;
    background: radial-gradient(circle, rgba(79,70,229,0.12), transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -20%; left: -10%;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(6,182,212,0.08), transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
    padding: 8rem 5% 4rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.hero-content { max-width: 620px; }

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 1.1rem;
    background: rgba(79,70,229,0.12);
    border: 1px solid rgba(79,70,229,0.3);
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--primary-light);
    margin-bottom: 2rem;
    letter-spacing: 0.5px;
}
.hero-badge::before {
    content: '';
    width: 6px; height: 6px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}

.hero h1 {
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 1.5rem;
}
.hero h1 .highlight {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero h1 .highlight-light {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-sub {
    color: var(--gray-400);
    font-size: 1.05rem;
    margin-bottom: 2rem;
    line-height: 1.8;
    max-width: 520px;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2.5rem;
    padding: 1.25rem 0;
    border-top: 1px solid rgba(79,70,229,0.1);
    border-bottom: 1px solid rgba(79,70,229,0.1);
}
.hero-stat {
    display: flex;
    flex-direction: column;
}
.hero-stat-num {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}
.hero-stat-label {
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: 0.25rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}
.btn-primary {
    padding: 0.9rem 2.2rem;
    background: var(--gradient-main);
    border: none;
    border-radius: 12px;
    color: #fff;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 16px 40px rgba(79,70,229,0.4);
}
.btn-outline {
    padding: 0.9rem 2.2rem;
    background: transparent;
    border: 2px solid rgba(79,70,229,0.4);
    border-radius: 12px;
    color: var(--light);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}
.btn-outline:hover {
    border-color: var(--primary-light);
    background: rgba(79,70,229,0.08);
    transform: translateY(-3px);
}

/* Hero 右侧视觉 */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}
.hero-grid-bg {
    width: 400px; height: 400px;
    position: relative;
}
.hero-grid-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    border: 1px solid rgba(79,70,229,0.12);
    border-radius: 50%;
    animation: spin-slow 30s linear infinite;
}
.hero-grid-bg::after {
    content: '';
    position: absolute;
    inset: 30px;
    border: 1px dashed rgba(79,70,229,0.08);
    border-radius: 50%;
    animation: spin-slow 20s linear infinite reverse;
}

.hero-ring {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 320px; height: 320px;
    background: radial-gradient(circle, rgba(79,70,229,0.06) 0%, transparent 70%);
    border-radius: 50%;
}
.hero-logo-big {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 120px; height: 120px;
    background: var(--gradient-main);
    border-radius: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Orbitron', sans-serif;
    font-size: 2.2rem;
    font-weight: 700;
    color: #fff;
    box-shadow: 0 0 60px rgba(79,70,229,0.3);
    position: relative;
    overflow: hidden;
    z-index: 10;
}
.hero-logo-big::after {
    content: '';
    position: absolute;
    top: -30%; left: -30%;
    width: 160%; height: 160%;
    background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.2), transparent 60%);
}

/* 轨道环 */
.orbit-ring {
    position: absolute;
    top: 50%; left: 50%;
    border: 1px solid rgba(79,70,229,0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
}
.orbit-ring::before {
    content: '';
    position: absolute;
    width: 10px; height: 10px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent);
}
.orbit-ring:nth-child(1) {
    width: 180px; height: 180px;
    animation: orbit-rotate 8s linear infinite;
}
.orbit-ring:nth-child(1)::before {
    top: -5px; left: 50%;
    transform: translateX(-50%);
}
.orbit-ring:nth-child(2) {
    width: 260px; height: 260px;
    border-color: rgba(124,58,237,0.08);
    animation: orbit-rotate 12s linear infinite reverse;
}
.orbit-ring:nth-child(2)::before {
    bottom: -5px; left: 50%;
    transform: translateX(-50%);
    background: var(--secondary);
    box-shadow: 0 0 10px var(--secondary);
}
.orbit-ring:nth-child(3) {
    width: 340px; height: 340px;
    border-color: rgba(6,182,212,0.06);
    animation: orbit-rotate 16s linear infinite;
}
.orbit-ring:nth-child(3)::before {
    top: 50%; right: -5px;
    transform: translateY(-50%);
    background: var(--primary-light);
    box-shadow: 0 0 10px var(--primary-light);
}

/* 浮动标签 */
.hero-float-tag {
    position: absolute;
    padding: 0.65rem 1.1rem;
    background: rgba(17,20,39,0.85);
    border: 1px solid rgba(79,70,229,0.2);
    border-radius: 12px;
    backdrop-filter: blur(12px);
    font-size: 0.8rem;
    white-space: nowrap;
    animation: float-y 5s ease-in-out infinite;
}
.hero-float-tag:nth-child(5) { top: 8%; right: 5%; animation-delay: 0s; }
.hero-float-tag:nth-child(6) { bottom: 15%; left: 0; animation-delay: 1.5s; }
.hero-float-tag:nth-child(7) { bottom: 5%; right: 10%; animation-delay: 3s; }
.hero-float-tag .tag-icon { margin-right: 6px; }

/* ===== 关于我们 ===== */
.about {
    padding: 8rem 0;
    position: relative;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.about-image {
    position: relative;
}
.about-image-bg {
    width: 100%;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, rgba(79,70,229,0.08), rgba(6,182,212,0.05));
    border-radius: 24px;
    border: 1px solid rgba(79,70,229,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}
.about-image-bg .graphic {
    font-size: 6rem;
    opacity: 0.3;
}
.about-image-bg .deco-line {
    position: absolute;
    width: 60%; height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-light), transparent);
    top: 40%; left: 20%;
}
.about-image-bg .deco-line:nth-child(3) {
    top: 55%;
    width: 40%;
    left: 30%;
    opacity: 0.5;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: -2rem;
    padding: 0 1rem;
    position: relative;
    z-index: 1;
}
.about-stat {
    background: var(--card);
    border: 1px solid rgba(79,70,229,0.1);
    border-radius: 16px;
    padding: 1.25rem;
    text-align: center;
}
.about-stat-num {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.about-stat-label {
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: 0.15rem;
}

.about-text h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}
.about-text p {
    color: var(--gray-400);
    margin-bottom: 1.2rem;
    font-size: 0.95rem;
    line-height: 1.8;
}
.about-values {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 1.5rem 0;
    padding: 1.25rem;
    background: rgba(79,70,229,0.04);
    border: 1px solid rgba(79,70,229,0.1);
    border-radius: 12px;
}
.about-value {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.about-value .value-icon {
    font-size: 1.25rem;
    width: 2rem;
    text-align: center;
}
.about-value strong {
    color: var(--light);
    font-size: 0.9rem;
    margin-right: 0.5rem;
}
.about-value span {
    color: var(--gray-400);
    font-size: 0.85rem;
}
.about-text .company-badge {
    display: inline-block;
    margin-top: 0.5rem;
    padding: 0.5rem 1.2rem;
    background: rgba(79,70,229,0.06);
    border: 1px solid rgba(79,70,229,0.15);
    border-radius: 10px;
    font-size: 0.8rem;
    color: var(--gray-400);
}

/* ===== 服务 ===== */
.services {
    padding: 8rem 0;
    background: rgba(17,20,39,0.4);
    position: relative;
}
.services::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(79,70,229,0.2), transparent);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2rem;
}

.service-card {
    padding: 2.5rem;
    background: var(--card);
    border: 1px solid rgba(79,70,229,0.08);
    border-radius: 20px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}
.service-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: linear-gradient(135deg, rgba(79,70,229,0.06), transparent 60%);
    opacity: 0;
    transition: opacity 0.4s;
}
.service-card:hover::before { opacity: 1; }
.service-card:hover {
    transform: translateY(-6px);
    border-color: rgba(79,70,229,0.25);
    box-shadow: 0 20px 50px rgba(0,0,0,0.3);
}

.service-card.featured-token {
    border-color: rgba(79,70,229,0.3);
    background: linear-gradient(135deg, var(--card), rgba(79,70,229,0.06));
}
.service-card.featured-token .service-icon {
    background: var(--gradient-main);
}

.service-icon {
    width: 56px; height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin-bottom: 1.25rem;
    position: relative;
    z-index: 1;
}
.service-icon.purple { background: rgba(124,58,237,0.15); }
.service-icon.cyan { background: rgba(6,182,212,0.15); }
.service-icon.blue { background: rgba(79,70,229,0.15); }
.service-icon.green { background: rgba(16,185,129,0.15); }
.service-icon.orange { background: rgba(245,158,11,0.15); }
.service-icon.pink { background: rgba(236,72,153,0.15); }

.service-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.6rem;
    position: relative;
    z-index: 1;
}
.service-card p {
    color: var(--gray-400);
    font-size: 0.9rem;
    line-height: 1.7;
    position: relative;
    z-index: 1;
}
.service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
    position: relative;
    z-index: 1;
}
.service-tag {
    padding: 0.25rem 0.75rem;
    background: rgba(79,70,229,0.08);
    border: 1px solid rgba(79,70,229,0.15);
    border-radius: 6px;
    font-size: 0.75rem;
    color: var(--gray-400);
    transition: all 0.3s;
}
.service-tag:hover {
    background: rgba(79,70,229,0.15);
    border-color: rgba(79,70,229,0.3);
    color: var(--primary-light);
}
.service-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.2rem;
    font-size: 0.85rem;
    color: var(--primary-light);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    z-index: 1;
    transition: gap 0.3s;
}
.service-link:hover { gap: 0.75rem; }

/* ===== 技术优势 ===== */
.advantages {
    padding: 8rem 0;
}

.adv-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}
.adv-card {
    text-align: center;
    padding: 2.5rem 2rem;
    background: var(--card);
    border: 1px solid rgba(79,70,229,0.06);
    border-radius: 20px;
    transition: all 0.4s;
}
.adv-card:hover {
    border-color: rgba(79,70,229,0.2);
    transform: translateY(-4px);
}
.adv-num {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.8rem;
    font-weight: 700;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.75rem;
}
.adv-card h4 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}
.adv-card p {
    color: var(--gray-400);
    font-size: 0.85rem;
    line-height: 1.6;
}

/* ===== 技术栈 ===== */
.tech-stack {
    padding: 8rem 0;
    background: rgba(17,20,39,0.3);
    position: relative;
}
.tech-stack::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(79,70,229,0.2), transparent);
}

/* 技术能力统计 */
.tech-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
    padding: 2rem;
    background: var(--card);
    border: 1px solid rgba(79,70,229,0.1);
    border-radius: 20px;
}
.tech-stat {
    text-align: center;
    padding: 1rem;
}
.tech-stat-num {
    display: block;
    font-family: 'Orbitron', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    margin-bottom: 0.5rem;
}
.tech-stat-label {
    font-size: 0.85rem;
    color: var(--gray-500);
}

/* 技术分类网格 */
.tech-grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}
.tech-category {
    background: var(--card);
    border: 1px solid rgba(79,70,229,0.08);
    border-radius: 16px;
    padding: 1.75rem;
    transition: all 0.3s;
}
.tech-category:hover {
    border-color: rgba(79,70,229,0.2);
    transform: translateY(-4px);
}
.tech-category-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid rgba(79,70,229,0.1);
}
.tech-category-icon {
    font-size: 1.5rem;
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(79,70,229,0.08);
    border-radius: 10px;
}
.tech-category h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--light);
    margin: 0;
    padding: 0;
    border: none;
}
.tech-items {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.tech-item {
    padding: 0.4rem 0.8rem;
    background: rgba(79,70,229,0.06);
    border: 1px solid rgba(79,70,229,0.12);
    border-radius: 8px;
    font-size: 0.8rem;
    color: var(--gray-400);
    transition: all 0.3s;
}
.tech-item:hover {
    background: rgba(79,70,229,0.12);
    border-color: rgba(79,70,229,0.25);
    color: var(--primary-light);
}

/* 云服务商认证 */
.tech-certifications {
    margin-bottom: 3rem;
    padding: 2.5rem;
    background: var(--card);
    border: 1px solid rgba(79,70,229,0.1);
    border-radius: 20px;
}
.cert-title {
    text-align: center;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--light);
    margin-bottom: 2rem;
}
.cert-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}
.cert-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem;
    background: rgba(79,70,229,0.04);
    border: 1px solid rgba(79,70,229,0.08);
    border-radius: 12px;
    transition: all 0.3s;
}
.cert-item:hover {
    border-color: rgba(79,70,229,0.2);
    transform: translateY(-4px);
}
.cert-icon {
    font-size: 2rem;
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(79,70,229,0.1);
    border-radius: 12px;
}
.cert-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--light);
}
.cert-level {
    font-size: 0.75rem;
    color: var(--primary-light);
    padding: 0.25rem 0.75rem;
    background: rgba(79,70,229,0.1);
    border-radius: 20px;
}

/* 技术理念 */
.tech-philosophy {
    padding: 2.5rem;
    background: linear-gradient(135deg, rgba(79,70,229,0.06), rgba(6,182,212,0.04));
    border: 1px solid rgba(79,70,229,0.1);
    border-radius: 20px;
}
.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}
.philosophy-item {
    text-align: center;
    padding: 1.5rem;
}
.philosophy-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 1rem;
}
.philosophy-item h4 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--light);
    margin-bottom: 0.75rem;
}
.philosophy-item p {
    font-size: 0.85rem;
    color: var(--gray-400);
    line-height: 1.6;
}

/* ===== CTA 横幅 ===== */
.cta-banner {
    padding: 6rem 0;
    background: rgba(17,20,39,0.5);
    border-top: 1px solid rgba(79,70,229,0.06);
    border-bottom: 1px solid rgba(79,70,229,0.06);
    text-align: center;
    position: relative;
    overflow: hidden;
}
.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%; left: -20%;
    width: 140%; height: 200%;
    background: radial-gradient(ellipse at center, rgba(79,70,229,0.04), transparent 60%);
    pointer-events: none;
}
.cta-banner h2 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 700;
    margin-bottom: 1rem;
}
.cta-banner p {
    color: var(--gray-400);
    max-width: 500px;
    margin: 0 auto 2rem;
}
.cta-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== 页脚 ===== */
footer {
    padding: 5rem 5% 2rem;
    background: var(--dark);
    border-top: 1px solid rgba(79,70,229,0.06);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto 3rem;
}

.footer-brand-desc {
    color: var(--gray-500);
    font-size: 0.88rem;
    margin-top: 1rem;
    line-height: 1.8;
}
.footer-company {
    margin-top: 1rem;
    padding: 1rem 1.2rem;
    background: rgba(79,70,229,0.04);
    border: 1px solid rgba(79,70,229,0.08);
    border-radius: 12px;
    font-size: 0.78rem;
    color: var(--gray-500);
    line-height: 1.8;
}
.footer-company strong {
    color: var(--gray-300);
}

.footer-links h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--light);
}
.footer-links ul {
    list-style: none;
}
.footer-links li { margin-bottom: 0.75rem; }
.footer-links a {
    color: var(--gray-500);
    text-decoration: none;
    font-size: 0.88rem;
    transition: color 0.3s;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}
.footer-links a:hover { color: var(--primary-light); }

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(79,70,229,0.06);
    color: var(--gray-500);
    font-size: 0.82rem;
}
.footer-bottom-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}
.footer-bottom-links a {
    color: var(--gray-500);
    text-decoration: none;
    font-size: 0.82rem;
    transition: color 0.3s;
}
.footer-bottom-links a:hover {
    color: var(--primary-light);
}
.footer-divider {
    color: var(--gray-500);
    opacity: 0.5;
}
.footer-icp {
    margin-top: 0.5rem;
    font-size: 0.75rem;
    opacity: 0.7;
}