/*
 * 新疆紫旭云科技有限公司 - 丝路云端设计系统
 * 视觉要素：紫蓝渐变、丝路几何纹、流动曲线、光晕与柔和阴影
 */

:root {
    /* Brand palette */
    --primary: #6C5CE7;             /* 紫旭紫 */
    --primary-blue: #0984E3;        /* 天山蓝 */
    --gradient-1: linear-gradient(135deg, #6C5CE7, #0984E3);
    --gradient-2: linear-gradient(135deg, #A29BFE, #74B9FF);
    --accent-gold: #FDCB6E;         /* 丝路金 */
    --accent-coral: #FF7675;        /* 日出红 */
    --bg-primary: #FAFBFC;
    --bg-secondary: #F8F9FE;
    --bg-dark: #2D3436;
    --text-strong: #2D3436;
    --text-soft: #636E72;
    --text-light: #FFFFFF;
    --border: rgba(108, 92, 231, 0.16);
    --shadow-soft: 0 18px 48px rgba(17, 24, 39, 0.12);
    --shadow-strong: 0 26px 70px rgba(17, 24, 39, 0.16);

    /* Layout */
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 22px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-14: 56px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: var(--text-strong);
    background: var(--bg-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; border-radius: var(--radius-md); }
a { color: var(--primary-blue); text-decoration: none; transition: all .25s ease; }
a:hover { color: var(--primary); }

.container {
    width: min(1200px, 92vw);
    margin: 0 auto;
}
section { padding: var(--space-14) 0; }

h1, h2, h3, h4, h5, h6 { color: var(--text-strong); letter-spacing: 0.2px; }
 h1 { font-size: 48px; line-height: 1.15; }
 h2 { font-size: 36px; line-height: 1.25; }
 h3 { font-size: 26px; line-height: 1.35; }
 h4 { font-size: 20px; line-height: 1.4; }
 p { color: var(--text-soft); }

/* Grid helpers */
.grid { display: grid; gap: var(--space-6); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.flex { display: flex; align-items: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.text-center { text-align: center; }
.mt-lg { margin-top: var(--space-10); }
.mb-lg { margin-bottom: var(--space-10); }

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(26, 26, 46, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
}
.logo a {
    color: #fff;
    font-weight: 800;
    letter-spacing: 0.6px;
    font-size: 1.2rem;
}
.nav-menu { list-style: none; display: flex; align-items: center; gap: var(--space-3); }
.nav-item { position: relative; }
.nav-item > a {
    color: #f1f2ff;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    display: block;
}
.nav-item > a:hover, .nav-item > a.active {
    background: rgba(255,255,255,0.08);
    color: #fff;
}
.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 190px;
    background: #221c33;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-md);
    padding: 10px 0;
    display: none;
    box-shadow: var(--shadow-soft);
}
.dropdown-menu li { list-style: none; }
.dropdown-menu a {
    color: #f4f4ff;
    padding: 10px 16px;
    display: block;
}
.dropdown-menu a:hover { background: rgba(255,255,255,0.06); }
.nav-item:hover .dropdown-menu { display: block; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 18px;
    border-radius: 50px;
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: all .25s ease;
    font-size: 15px;
}
.btn-gradient {
    background: var(--gradient-1);
    color: #fff;
    box-shadow: 0 14px 30px rgba(108,92,231,0.3);
}
.btn-gradient:hover { transform: translateY(-2px); box-shadow: 0 18px 40px rgba(108,92,231,0.35); }
.btn-outline-light {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255,255,255,0.5);
}
.btn-outline { border: 1px solid var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover { background: rgba(108,92,231,0.08); }
.btn-ghost { background: rgba(255,255,255,0.08); color: #fff; border: 1px solid rgba(255,255,255,0.08); }
.btn-light { background: #fff; color: var(--primary); }
.btn-sm { padding: 10px 14px; font-size: 14px; }

/* Chips & badges */
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-soft);
}
.eyebrow::before {
    content: '';
    width: 36px;
    height: 1px;
    background: var(--gradient-1);
    display: inline-block;
}
.tag-chip {
    display: inline-block;
    padding: 6px 12px;
    background: rgba(108,92,231,0.1);
    color: var(--primary);
    border-radius: 999px;
    font-weight: 600;
    font-size: 13px;
}
.stat-chip {
    background: rgba(255,255,255,0.12);
    color: #fff;
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 14px;
    padding: 12px 16px;
    backdrop-filter: blur(6px);
}

.section-header { margin-bottom: var(--space-8); }
.section-header h2 { margin: 10px 0 6px; }

/* Hero - 丝路星空 */
.hero-silkroad {
    position: relative;
    overflow: hidden;
    color: #fff;
    background: radial-gradient(circle at 20% 20%, rgba(255,255,255,0.05), transparent 35%),
                radial-gradient(circle at 80% 0%, rgba(253,203,110,0.15), transparent 30%),
                var(--gradient-1);
    padding: 120px 0 100px;
}
.glow-blob {
    position: absolute;
    width: 320px;
    height: 320px;
    filter: blur(90px);
    opacity: 0.55;
    z-index: 1;
}
.blob-left { left: -80px; top: -40px; background: rgba(108,92,231,0.55); }
.blob-right { right: -60px; bottom: -60px; background: rgba(9,132,227,0.45); }
.hero-silkroad .pattern-overlay {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(255,255,255,0.07) 1px, transparent 1px);
    background-size: 60px 60px;
    opacity: 0.6;
}
.hero-silkroad .container { position: relative; z-index: 2; }
.hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: var(--space-10);
}
.hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
}
.hero-pill {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    border-radius: 999px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    backdrop-filter: blur(8px);
    margin-bottom: 10px;
    box-shadow: 0 12px 30px rgba(0,0,0,0.12);
}
.hero-pill .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-gold);
    box-shadow: 0 0 12px rgba(253,203,110,0.8);
}
.hero-text h1 { color: #fff; margin: 10px 0; }
.hero-text .subtitle { font-size: 20px; color: #eef1ff; display: block; margin-top: 10px; }
.hero-desc { color: #eef1ff; max-width: 640px; margin: 14px 0 22px; }
.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-visual {
    position: relative;
    padding: 24px;
    border-radius: var(--radius-lg);
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.15);
    box-shadow: var(--shadow-soft);
}
.hero-visual-holo {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 20%, rgba(255,255,255,0.22), transparent 40%);
    opacity: 0.5;
    filter: blur(12px);
    pointer-events: none;
    z-index: 1;
}
.hero-visual::after {
    content: '';
    position: absolute;
    inset: 12px;
    border-radius: var(--radius-md);
    border: 1px dashed rgba(255,255,255,0.2);
}
.hero-visual img { border-radius: var(--radius-md); box-shadow: var(--shadow-soft); }
.hero-visual-card {
    position: absolute;
    left: -18px;
    bottom: -26px;
    background: rgba(255,255,255,0.92);
    color: var(--text-strong);
    border-radius: 14px;
    padding: 14px 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.18);
    border: 1px solid rgba(108,92,231,0.16);
    max-width: 280px;
    z-index: 2;
}
.hero-visual-card .mono { font-size: 12px; letter-spacing: 1px; color: var(--text-soft); }
.hero-visual-card p { margin: 8px 0; color: var(--text-strong); }
.hero-visual-card .mini-stats { display: flex; gap: 10px; flex-wrap: wrap; color: var(--primary); font-weight: 700; }
.hero-floating-badges {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin: 14px 0 6px;
}
.badge-chip {
    display: inline-flex;
    align-items: center;
    padding: 8px 14px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 999px;
    color: #fff;
    font-weight: 600;
    font-size: 13px;
    letter-spacing: 0.2px;
}
.hero-stats {
    margin-top: 24px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
}
.hero-stats .stat-chip strong { display: block; font-size: 18px; color: #fff; }
.hero-stats .stat-chip span { color: #e8ebff; font-size: 14px; }

/* Pattern cards */
.pattern-card {
    position: relative;
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 28px;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border);
    transition: all .3s ease;
}
.pattern-card::before {
    content: '';
    position: absolute;
    top: -10%;
    right: -10%;
    width: 180px;
    height: 180px;
    background: url('../images/branding_purple_dawn_concept.png') center/cover;
    opacity: 0.08;
    filter: saturate(0.6);
}
.pattern-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-strong); }
.icon-badge {
    width: 46px;
    height: 46px;
    border-radius: 14px;
    background: rgba(108,92,231,0.12);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 12px;
}
.icon-badge.gradient { background: var(--gradient-2); color: var(--text-strong); }

/* Horizontal cards */
.horizontal-scroll {
    display: flex;
    gap: var(--space-6);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding-bottom: 10px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}
.horizontal-scroll::-webkit-scrollbar { display: none; }
.service-card {
    flex: 0 0 320px;
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    scroll-snap-align: start;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}
.service-card .card-image { height: 190px; overflow: hidden; }
.service-card .card-image img { width: 100%; height: 100%; object-fit: cover; border-radius: 0; }
.service-card .card-content { padding: var(--space-6); display: flex; flex-direction: column; gap: 12px; height: 100%; }
.service-card h4 { margin: 4px 0; }

/* Solutions grid */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-4);
}
.solution-card {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
}
.solution-card img { width: 100%; height: 100%; object-fit: cover; border-radius: 0; }
.solution-card .card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0,0,0,0.05), rgba(0,0,0,0.65));
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 20px;
    gap: 8px;
}
.solution-card .icon { font-size: 22px; }
.solution-card h4 { color: #fff; }

/* Coverage */
.coverage-layout {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    align-items: center;
    gap: var(--space-8);
}
.map-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}
.map-card::after {
    content: '';
    position: absolute;
    top: 10%;
    right: -5%;
    width: 180px;
    height: 180px;
    background: radial-gradient(circle, rgba(108,92,231,0.15), transparent 60%);
}
.map-visual {
    background: linear-gradient(160deg, rgba(108,92,231,0.08), rgba(9,132,227,0.14));
    border: 1px dashed rgba(108,92,231,0.35);
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.8);
}
.coverage-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: var(--space-4); margin-top: var(--space-4); }
.coverage-stats .stat { background: rgba(108,92,231,0.08); border-radius: var(--radius-md); padding: 16px; border: 1px solid var(--border); }
.coverage-stats strong { color: var(--primary); display: block; font-size: 20px; }

/* Case cards */
.case-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--space-6); }
.case-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-soft); display: flex; flex-direction: column; }
.case-card img { width: 100%; height: 180px; object-fit: cover; border-radius: 0; }
.case-card .body { padding: var(--space-5); display: flex; flex-direction: column; gap: 10px; height: 100%; }
.case-tag { background: rgba(108,92,231,0.12); color: var(--primary); padding: 4px 10px; border-radius: 999px; font-weight: 700; font-size: 12px; align-self: flex-start; }

/* Partners */
.partner-strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px,1fr)); gap: var(--space-4); }
.partner-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-5); text-align: center; box-shadow: var(--shadow-soft); }
.partner-card img { width: 100%; height: 120px; object-fit: cover; border-radius: var(--radius-md); margin-bottom: 12px; }

/* CTA */
.cta-section {
    position: relative;
    overflow: hidden;
    background: var(--gradient-1);
    color: #fff;
    padding: var(--space-14) 0;
}
.cta-section .pattern-overlay {
    position: absolute;
    inset: 0;
    background: url('../images/cloud_abstract_dataflow.png') center/cover;
    opacity: 0.15;
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section p { color: #eef1ff; margin: 12px 0 16px; }
.cta-actions { display: flex; gap: 12px; justify-content: center; }

/* Page hero */
.page-hero {
    background: linear-gradient(140deg, rgba(108,92,231,0.16), rgba(9,132,227,0.12));
    padding: 90px 0 70px;
}
.page-hero h1 { margin: 8px 0; }
.page-hero p { max-width: 720px; }

/* Data table */
.data-table { width: 100%; border-collapse: collapse; margin-top: var(--space-4); background: #fff; box-shadow: var(--shadow-soft); border-radius: var(--radius-md); overflow: hidden; }
.data-table th, .data-table td { padding: 14px 16px; text-align: left; }
.data-table thead { background: rgba(108,92,231,0.08); }
.data-table tr + tr { border-top: 1px solid var(--border); }

/* Timeline */
.timeline { position: relative; margin-top: var(--space-6); }
.timeline::before { content: ''; position: absolute; left: 18px; top: 0; bottom: 0; width: 2px; background: var(--gradient-1); }
.timeline-item { padding-left: 52px; position: relative; margin-bottom: var(--space-6); }
.timeline-item::before { content: ''; position: absolute; left: 10px; top: 6px; width: 16px; height: 16px; border-radius: 50%; background: #fff; border: 4px solid var(--primary); }

/* Feature grid */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: var(--space-4); }
.feature-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); padding: var(--space-5); box-shadow: var(--shadow-soft); }
.feature-card h4 { margin: 6px 0; }

/* Split layout */
.split {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-8);
    align-items: center;
}
.image-frame { position: relative; }
.image-frame::after {
    content: '';
    position: absolute;
    inset: 12px;
    border-radius: var(--radius-md);
    border: 1px dashed rgba(108,92,231,0.35);
    pointer-events: none;
}

/* Cards list */
.list-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); padding: var(--space-5); box-shadow: var(--shadow-soft); }
.list-card + .list-card { margin-top: var(--space-4); }
.list-card h4 { margin-bottom: 8px; }

/* Tabs placeholder */
.tabs { display: flex; gap: 10px; flex-wrap: wrap; }
.tab { padding: 10px 16px; border-radius: 999px; background: rgba(108,92,231,0.08); color: var(--primary); border: 1px solid var(--border); font-weight: 700; }

/* Case detail */
.case-hero { background: linear-gradient(135deg, rgba(108,92,231,0.14), rgba(9,132,227,0.12)); padding: 80px 0 60px; }
.case-meta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 10px; }
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 999px; background: rgba(108,92,231,0.1); color: var(--primary); font-weight: 700; }
.badge.gold { background: rgba(253,203,110,0.16); color: #ad7a00; }

.case-section { padding: var(--space-8) 0; border-bottom: 1px solid rgba(99,110,114,0.12); }

/* News */
.news-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px,1fr)); gap: var(--space-5); }
.news-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); padding: var(--space-5); box-shadow: var(--shadow-soft); display: flex; flex-direction: column; gap: 10px; }
.news-card h4 { margin: 6px 0; }
.news-meta { display: flex; gap: 10px; color: var(--text-soft); font-size: 13px; }
.article { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); padding: var(--space-6); box-shadow: var(--shadow-soft); margin-top: var(--space-6); }
.article h2 { margin-bottom: 12px; }
.article p + p { margin-top: 10px; }

/* Forms */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px,1fr)); gap: var(--space-4); }
input, textarea, select {
    width: 100%;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(99,110,114,0.2);
    font-size: 15px;
    transition: border .2s ease, box-shadow .2s ease;
}
input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(108,92,231,0.12);
}
textarea { min-height: 140px; resize: vertical; }

/* Footer */
.footer { background: #12121b; color: #cfd3e0; padding: 56px 0 24px; margin-top: var(--space-10); }
.footer h3, .footer h4 { color: #fff; margin-bottom: 10px; }
.footer .grid { grid-template-columns: repeat(auto-fit, minmax(200px,1fr)); }
.footer-links { list-style: none; margin-top: 6px; }
.footer-links li + li { margin-top: 8px; }
.footer a { color: #e0e4ff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); margin-top: 24px; padding-top: 14px; text-align: center; font-size: 14px; }
.qr-block { width: 120px; height: 120px; background: rgba(255,255,255,0.06); border: 1px dashed rgba(255,255,255,0.2); border-radius: var(--radius-md); margin-top: 10px; }

/* Animations */
@keyframes float-cloud {
    0%, 100% { transform: translateY(0) translateX(0); }
    25% { transform: translateY(-14px) translateX(8px); }
    50% { transform: translateY(-6px) translateX(-6px); }
    75% { transform: translateY(-10px) translateX(4px); }
}
.floating-clouds::before, .floating-clouds::after {
    content: '';
    position: absolute;
    background: radial-gradient(circle, rgba(255,255,255,0.35), transparent 60%);
    width: 200px;
    height: 200px;
    filter: blur(10px);
    animation: float-cloud 18s ease-in-out infinite;
}
.floating-clouds::after { animation-duration: 22s; right: 10%; top: 25%; }

@media (max-width: 1024px) {
    h1 { font-size: 40px; }
    .hero-grid { grid-template-columns: 1fr; }
    .hero-visual { order: -1; }
    .nav-menu { flex-wrap: wrap; }
    .dropdown-menu { position: static; display: block; border: none; background: transparent; padding: 0; box-shadow: none; }
}

@media (max-width: 768px) {
    section { padding: var(--space-10) 0; }
    .header .container { flex-wrap: wrap; gap: 10px; }
    .coverage-layout { grid-template-columns: 1fr; }
    .hero-silkroad { padding: 100px 0 80px; }
    h1 { font-size: 34px; }
    h2 { font-size: 28px; }
    .btn { width: auto; }
}