/* ========================================
   卓玛科技企业官网样式表
   ======================================== */

:root {
    --color-primary: #FF6B35;
    --gradient-primary: linear-gradient(135deg, #FF6B35 0%, #FF4500 50%, #DC2626 100%);

    --color-bg-primary: #FFFFFF;
    --color-bg-secondary: #F9FAFB;
    --color-bg-tertiary: #F3F4F6;
    --color-bg-card: #FFFFFF;

    --color-text-primary: #111827;
    --color-text-secondary: #6B7280;
    --color-text-tertiary: #9CA3AF;

    --color-border: #E5E7EB;
    --color-border-light: #D1D5DB;

    --font-family: 'Inter', -apple-system, sans-serif;
    --container-max: 1100px;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

h1, h2, h3 { font-weight: 600; line-height: 1.2; letter-spacing: -0.02em; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-family: var(--font-family);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--color-border-light);
}

.btn-outline:hover { border-color: var(--color-primary); }

.btn-lg { padding: 0.875rem 1.75rem; font-size: 1rem; }
.btn-block { width: 100%; }
.btn-arrow { transition: transform 0.15s; }
.btn:hover .btn-arrow { transform: translateX(4px); }

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1rem 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-border);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img {
    height: 36px;
    width: auto;
}

.logo-text {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.nav-links { display: flex; gap: 2rem; }
.nav-links a { color: var(--color-text-secondary); font-size: 0.875rem; font-weight: 500; transition: color 0.15s; }
.nav-links a:hover { color: var(--color-text-primary); }

/* Hero */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(80px + 4rem) 0 4rem;
    background: var(--color-bg-secondary);
}

.hero-content { max-width: 600px; }

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 2rem;
}

.hero-actions { display: flex; gap: 1rem; }

/* Sections */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-tag {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    background: rgba(255, 107, 53, 0.1);
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.25rem;
    margin-bottom: 0.5rem;
}

/* Projects */
.projects {
    padding: 5rem 0;
    background: var(--color-bg-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.project-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all 0.2s;
}

.project-card:hover {
    border-color: rgba(255, 107, 53, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
}

.project-image {
    height: 160px;
    background: linear-gradient(135deg, var(--color-bg-tertiary) 0%, var(--color-bg-secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-placeholder-icon {
    padding: 0.5rem 1rem;
    background: rgba(255, 107, 53, 0.1);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
}

.project-info { padding: 1.5rem; }

.project-tags { display: flex; gap: 0.5rem; margin-bottom: 0.5rem; }

.project-tag {
    padding: 0.125rem 0.5rem;
    background: rgba(255, 107, 53, 0.1);
    border-radius: 0.375rem;
    font-size: 0.75rem;
    color: var(--color-primary);
}

.project-title { font-size: 1.125rem; margin-bottom: 0.5rem; }
.project-desc { font-size: 0.875rem; color: var(--color-text-secondary); line-height: 1.6; }

/* Services */
.services {
    padding: 5rem 0;
    background: var(--color-bg-secondary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.service-card {
    padding: 2rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: all 0.2s;
}

.service-card:hover {
    border-color: rgba(255, 107, 53, 0.3);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
}

.service-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 107, 53, 0.1);
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
}

.service-icon svg { width: 24px; height: 24px; color: var(--color-primary); }
.service-title { font-size: 1.125rem; margin-bottom: 0.5rem; }
.service-desc { font-size: 0.875rem; color: var(--color-text-secondary); line-height: 1.6; }

/* Contact */
.contact {
    padding: 5rem 0;
    background: var(--color-bg-primary);
}

.contact-form-wrapper {
    padding: 2rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
}

.contact-form { display: flex; flex-direction: column; gap: 1.5rem; }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group { display: flex; flex-direction: column; gap: 0.5rem; }
.form-group label { font-size: 0.875rem; font-weight: 500; color: var(--color-text-secondary); }

.form-group input,
.form-group textarea {
    padding: 0.75rem 1rem;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text-primary);
    font-family: var(--font-family);
    font-size: 1rem;
    transition: border-color 0.15s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-group textarea { resize: vertical; min-height: 100px; }

/* Footer */
.footer {
    padding: 3rem 0 2rem;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--color-border);
}

.footer-desc {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-top: 1rem;
    max-width: 280px;
}

.footer-links { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.footer-col h4 { font-size: 0.875rem; font-weight: 600; margin-bottom: 1rem; }
.footer-col ul li { margin-bottom: 0.5rem; }
.footer-col ul a, .footer-col ul li { font-size: 0.875rem; color: var(--color-text-secondary); }
.footer-col ul a:hover { color: var(--color-primary); }

.footer-bottom { padding-top: 2rem; text-align: center; }
.footer-bottom p { font-size: 0.875rem; color: var(--color-text-tertiary); }
.footer-bottom .icp { margin-top: 0.5rem; }
.footer-bottom .icp a { color: var(--color-text-tertiary); }
.footer-bottom .icp a:hover { color: var(--color-primary); }

/* Responsive */
@media (max-width: 768px) {
    .nav-links, .nav-actions { display: none; }

    .hero-title { font-size: 2.25rem; }
    .hero-actions { flex-direction: column; }
    .hero-actions .btn { width: 100%; }

    .projects-grid,
    .services-grid { grid-template-columns: 1fr; }

    .form-row { grid-template-columns: 1fr; }

    .footer-content { grid-template-columns: 1fr; }
    .footer-links { grid-template-columns: 1fr; gap: 1.5rem; }
}