/* ==================== 变量 ==================== */
:root {
    --orange: #e85c2e;
    --orange-deep: #c74a1f;
    --orange-glow: rgba(232, 92, 46, 0.12);
    --purple: #7a5af5;
    --purple-deep: #6a48e8;
    --yellow: #eab308;
    --gold: #b8860b;
    --green: #10b981;
    --dark: #09090b;
    --dark-2: #0c0c0e;
    --dark-3: #111114;
    --dark-card: #16161a;
    --ink: #111114;
    --gray-900: #1a1a1f;
    --gray-700: #52525c;
    --gray-500: #787882;
    --gray-300: #d1d1d6;
    --gray-100: #f4f4f6;
    --gray-50: #fafafa;
    --white: #ffffff;
    --gradient-warm: linear-gradient(135deg, #e85c2e 0%, #eab308 100%);
    --gradient-cool: linear-gradient(135deg, #7a5af5 0%, #6366e5 100%);
    --gradient-dark: linear-gradient(180deg, #09090b 0%, #0c0c0e 100%);
    --gradient-hero: radial-gradient(ellipse at 30% 20%, rgba(232,92,46,0.08) 0%, transparent 55%), radial-gradient(ellipse at 70% 80%, rgba(122,90,245,0.06) 0%, transparent 55%);
    --glass: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.06);
    --glass-light: rgba(255, 255, 255, 0.05);
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.03);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.08);
    --shadow-warm: 0 6px 24px rgba(232, 92, 46, 0.08);
    --radius: 16px;
    --radius-sm: 12px;
    --radius-xs: 8px;
    --transition: 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
    --transition-slow: 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ==================== Reset ==================== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: var(--ink);
    background: var(--white);
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
::selection { background: var(--orange); color: var(--white); }

/* ==================== 通用 ==================== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
.section { padding: 100px 0; }

.section-header { text-align: center; max-width: 640px; margin: 0 auto 56px; }

.section-tag {
    display: inline-block;
    padding: 5px 18px;
    background: linear-gradient(135deg, rgba(232, 92, 46, 0.06), rgba(234, 179, 8, 0.04));
    color: var(--orange);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 2.5px;
    border-radius: 100px;
    margin-bottom: 16px;
    border: 1px solid rgba(232, 92, 46, 0.1);
    text-transform: uppercase;
}
.section-tag.light {
    background: rgba(255, 255, 255, 0.04);
    color: rgba(255, 255, 255, 0.6);
    border-color: rgba(255, 255, 255, 0.08);
}
.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--ink);
    margin-bottom: 14px;
    line-height: 1.3;
    letter-spacing: -0.8px;
}
.section-title.light { color: var(--white); }
.section-desc { font-size: 0.95rem; color: var(--gray-500); line-height: 1.8; letter-spacing: 0.2px; }
.section-desc.light { color: rgba(255, 255, 255, 0.45); }

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

.text-orange { color: var(--orange); }
.text-purple { color: var(--purple); }
.text-green { color: var(--green); }

/* ==================== 按钮 ==================== */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 14px 36px; font-size: 0.9rem; font-weight: 500;
    border-radius: 100px; border: none; cursor: pointer;
    transition: var(--transition); font-family: inherit;
    letter-spacing: 0.5px;
}
.btn-primary {
    background: var(--gradient-warm);
    color: var(--white);
    box-shadow: 0 4px 16px rgba(232, 92, 46, 0.2);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(232, 92, 46, 0.3); }
.btn-outline {
    background: transparent; color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}
.btn-outline:hover { background: rgba(255, 255, 255, 0.06); border-color: rgba(255, 255, 255, 0.4); }

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    padding: 20px 0; transition: var(--transition);
}
.navbar.scrolled {
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(28px) saturate(160%);
    -webkit-backdrop-filter: blur(28px) saturate(160%);
    box-shadow: 0 1px 16px rgba(0, 0, 0, 0.03);
    padding: 12px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.02);
}
.nav-container { max-width: 1200px; margin: 0 auto; padding: 0 32px; display: flex; align-items: center; justify-content: space-between; }

/* Logo 融入设计 */
.logo { display: flex; align-items: center; gap: 10px; transition: var(--transition); }
.logo-img {
    height: 32px; width: 32px; object-fit: cover;
    border-radius: 50%; box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: var(--transition);
}
.navbar.scrolled .logo-img { box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.logo-text {
    font-size: 1.05rem; font-weight: 700; color: var(--white);
    letter-spacing: 1px; transition: var(--transition);
}
.navbar.scrolled .logo-text { color: var(--ink); }
.logo:hover .logo-img { transform: scale(1.05); }

.nav-menu { display: flex; gap: 28px; align-items: center; }
.nav-link {
    color: rgba(255, 255, 255, 0.7); font-size: 0.85rem; font-weight: 500;
    transition: var(--transition); position: relative; letter-spacing: 0.5px;
}
.navbar.scrolled .nav-link { color: var(--gray-700); }
.nav-link:hover, .nav-link.active { color: var(--white); }
.navbar.scrolled .nav-link:hover, .navbar.scrolled .nav-link.active { color: var(--orange); }
.nav-link::after {
    content: ''; position: absolute; bottom: -6px; left: 50%; width: 0; height: 2px;
    background: var(--gradient-warm); border-radius: 2px; transition: var(--transition);
    transform: translateX(-50%);
}
.nav-link:hover::after, .nav-link.active::after { width: 100%; }

.nav-cta {
    padding: 8px 20px; background: var(--gradient-warm); color: var(--white) !important;
    border-radius: 100px; font-weight: 500; font-size: 0.82rem;
}
.nav-cta::after { display: none; }
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(232, 92, 46, 0.25); }

.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 6px; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--white); border-radius: 2px; transition: var(--transition); }
.navbar.scrolled .hamburger span { background: var(--ink); }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ==================== Hero ==================== */
.hero {
    position: relative; min-height: 100vh; display: flex; align-items: center;
    justify-content: center; overflow: hidden; background: var(--dark);
}
.hero-bg { position: absolute; inset: 0; background: var(--dark); }
.hero-bg::before {
    content: ''; position: absolute; top: -15%; left: -8%;
    width: 700px; height: 700px;
    background: radial-gradient(circle, rgba(232, 92, 46, 0.14) 0%, transparent 65%);
    border-radius: 50%; animation: float 10s ease-in-out infinite;
}
.hero-bg::after {
    content: ''; position: absolute; bottom: -15%; right: -8%;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(122, 90, 245, 0.1) 0%, transparent 65%);
    border-radius: 50%; animation: float 12s ease-in-out infinite reverse;
}
@keyframes float { 0%, 100% { transform: translate(0, 0) scale(1); } 50% { transform: translate(40px, -30px) scale(1.05); } }

/* 细网格纹理 */
.hero-grid-overlay {
    position: absolute; inset: 0;
    background-image: linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
    background-size: 60px 60px; pointer-events: none;
}

.hero-content { position: relative; z-index: 1; text-align: center; padding: 0 32px; max-width: 800px; }

.hero-badge {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 7px 20px; background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(20px); border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 100px; color: rgba(255, 255, 255, 0.8);
    font-size: 0.78rem; margin-bottom: 28px; letter-spacing: 1.5px;
    animation: fadeInDown 0.8s ease;
}
.hero-badge::before {
    content: ''; width: 5px; height: 5px; border-radius: 50%;
    background: var(--orange); box-shadow: 0 0 8px var(--orange);
    animation: blink 2s ease-in-out infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

.hero-title { font-size: 3.4rem; font-weight: 900; color: var(--white); line-height: 1.2; margin-bottom: 22px; letter-spacing: -1px; animation: fadeInUp 0.8s ease 0.1s both; }
.hero-subtitle { font-size: 1rem; color: rgba(255, 255, 255, 0.5); line-height: 1.9; margin-bottom: 36px; letter-spacing: 0.5px; animation: fadeInUp 0.8s ease 0.2s both; }
.hero-actions { display: flex; gap: 16px; justify-content: center; animation: fadeInUp 0.8s ease 0.3s both; }

.hero-stats {
    display: flex; align-items: center; justify-content: center; gap: 48px; margin-top: 56px;
    animation: fadeInUp 0.8s ease 0.4s both;
}
.hero-stat { text-align: center; }
.hero-stat-num { font-size: 2rem; font-weight: 800; color: var(--white); letter-spacing: -0.5px; }
.hero-stat-num span { font-size: 0.85rem; font-weight: 400; color: rgba(255, 255, 255, 0.35); }
.hero-stat-label { font-size: 0.75rem; color: rgba(255, 255, 255, 0.35); margin-top: 4px; letter-spacing: 1.5px; text-transform: uppercase; }
.hero-stat-divider { width: 1px; height: 32px; background: rgba(255, 255, 255, 0.08); }

.hero-scroll { position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 8px; color: rgba(255, 255, 255, 0.25); font-size: 0.72rem; letter-spacing: 1.5px; text-transform: uppercase; }
.scroll-line { width: 1px; height: 28px; background: linear-gradient(to bottom, rgba(255, 255, 255, 0.3), transparent); animation: scrollPulse 2s ease-in-out infinite; }
@keyframes scrollPulse { 0%, 100% { opacity: 0.3; } 50% { opacity: 1; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInDown { from { opacity: 0; transform: translateY(-30px); } to { opacity: 1; transform: translateY(0); } }

/* ==================== 使命愿景 ==================== */
.mission { background: var(--gray-50); }
.mv-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 24px; }
.mv-card {
    background: var(--white); border-radius: var(--radius); padding: 40px 36px;
    box-shadow: var(--shadow-sm); transition: var(--transition-slow);
    position: relative; overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.02);
}
.mv-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: var(--gradient-warm); opacity: 0.9;
}
.mv-card.mv-vision::before { background: var(--gradient-cool); }
.mv-card::after {
    content: ''; position: absolute; bottom: -40px; right: -40px;
    width: 140px; height: 140px; border-radius: 50%;
    background: radial-gradient(circle, var(--orange-glow), transparent 70%);
    opacity: 0; transition: var(--transition-slow);
}
.mv-card.mv-vision::after { background: radial-gradient(circle, rgba(122,90,245,0.08), transparent 70%); }
.mv-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.mv-card:hover::after { opacity: 1; bottom: -20px; right: -20px; }
.mv-icon { font-size: 2rem; margin-bottom: 14px; position: relative; }
.mv-label { font-size: 0.7rem; font-weight: 700; letter-spacing: 3px; color: var(--orange); margin-bottom: 10px; position: relative; text-transform: uppercase; }
.mv-vision .mv-label { color: var(--purple); }
.mv-text { font-size: 1.05rem; font-weight: 600; color: var(--ink); line-height: 1.7; position: relative; }

.vision-box {
    background: var(--white); border-radius: var(--radius); padding: 32px;
    box-shadow: var(--shadow-sm); text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.02); transition: var(--transition-slow);
    position: relative; overflow: hidden;
}
.vision-box::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--green), #34d399);
}
.vision-box:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.vision-icon { font-size: 2rem; margin-bottom: 10px; }
.vision-label { font-size: 0.7rem; font-weight: 700; letter-spacing: 3px; color: var(--green); margin-bottom: 10px; text-transform: uppercase; }
.vision-text { font-size: 1.05rem; color: var(--gray-700); line-height: 1.7; }
.vision-text strong { color: var(--orange); font-size: 1.25rem; font-weight: 800; }

/* ==================== 核心价值观 ==================== */
.values { background: var(--white); }
.values-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.value-card {
    background: var(--white); border-radius: var(--radius); padding: 32px 22px;
    text-align: center; box-shadow: var(--shadow-xs); transition: var(--transition-slow);
    border: 1px solid rgba(0, 0, 0, 0.03); position: relative; overflow: hidden;
}
.value-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(180deg, rgba(232,92,46,0.015), transparent);
    opacity: 0; transition: var(--transition-slow);
}
.value-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: rgba(232,92,46,0.1); }
.value-card:hover::before { opacity: 1; }
.value-num {
    font-size: 2.6rem; font-weight: 900; color: var(--gray-100);
    position: absolute; top: 6px; right: 12px; line-height: 1;
    transition: var(--transition-slow);
}
.value-card:hover .value-num { color: rgba(232, 92, 46, 0.08); }
.value-icon { font-size: 1.8rem; margin-bottom: 14px; position: relative; }
.value-title { font-size: 1rem; font-weight: 700; color: var(--ink); margin-bottom: 7px; position: relative; letter-spacing: 0.5px; }
.value-desc { font-size: 0.8rem; color: var(--gray-500); line-height: 1.6; position: relative; }

/* ==================== 业务矩阵 ==================== */
.business { background: var(--gray-50); }

.biz-flow {
    display: flex; align-items: center; justify-content: center; gap: 10px;
    margin-bottom: 48px; flex-wrap: wrap;
}
.biz-flow-item {
    padding: 7px 20px; background: var(--white); border-radius: 100px;
    font-size: 0.82rem; font-weight: 600; color: var(--ink);
    box-shadow: var(--shadow-xs); border: 1px solid rgba(0,0,0,0.03);
    transition: var(--transition);
}
.biz-flow-item:hover { border-color: var(--orange); color: var(--orange); }
.biz-flow-arrow { color: var(--gray-300); font-size: 1rem; }

.biz-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.biz-card {
    background: var(--white); border-radius: var(--radius); padding: 30px;
    box-shadow: var(--shadow-sm); transition: var(--transition-slow);
    border: 1px solid rgba(0, 0, 0, 0.02); position: relative; overflow: hidden;
}
.biz-card::before {
    content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
    background: var(--gradient-warm);
}
.biz-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.biz-card-wide { grid-column: 1 / -1; }
.biz-card-highlight {
    background: var(--dark);
    border-color: rgba(255,255,255,0.04);
}
.biz-card-highlight::before { background: linear-gradient(180deg, var(--orange), var(--purple)); }
.biz-card-highlight .biz-card-title { color: var(--white); }
.biz-card-highlight .biz-card-sub { color: rgba(255,255,255,0.35); }
.biz-card-highlight .biz-list li strong { color: var(--white); }
.biz-card-highlight .biz-list li span { color: rgba(255,255,255,0.45); }
.biz-card-highlight .biz-list li::before { color: var(--orange); }
.biz-card-highlight .biz-card-icon { filter: none; }

.biz-card-badge {
    position: absolute; top: 14px; right: 14px;
    padding: 3px 12px; background: var(--orange); color: var(--white);
    font-size: 0.7rem; border-radius: 100px; font-weight: 500; letter-spacing: 0.5px;
}
.biz-card-badge.badge-purple { background: var(--purple); }
.biz-card-badge.badge-green { background: var(--green); }

.biz-card-header { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.biz-card-icon { font-size: 1.6rem; }
.biz-card-title { font-size: 1.1rem; font-weight: 700; color: var(--ink); letter-spacing: 0.3px; }
.biz-card-sub { font-size: 0.74rem; color: var(--gray-500); letter-spacing: 1px; }

.biz-list { display: flex; flex-direction: column; gap: 12px; }
.biz-list li { padding-left: 18px; position: relative; }
.biz-list li::before { content: ''; position: absolute; left: 0; top: 8px; width: 5px; height: 5px; border-radius: 50%; background: var(--orange); }
.biz-list li strong { display: block; font-size: 0.9rem; font-weight: 600; color: var(--ink); margin-bottom: 3px; }
.biz-list li span { display: block; font-size: 0.8rem; color: var(--gray-500); line-height: 1.6; }

.biz-sub-grid { display: grid; grid-template-columns: 1fr; gap: 12px; }

/* ==================== 关于我们 ==================== */
.about { background: var(--white); }
.about-wrapper { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 64px; align-items: center; }

.about-visual { position: relative; }
.about-image { position: relative; aspect-ratio: 1; border-radius: 20px; overflow: hidden; }
.about-image-bg { position: absolute; inset: 0; background: var(--gradient-warm); opacity: 0.9; }
.about-image-bg::after {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(circle at 30% 30%, rgba(122, 90, 245, 0.2), transparent 55%);
}
.about-image-content { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; }
.about-orb {
    width: 80px; height: 80px; background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px); border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: pulse 3s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { transform: scale(1); opacity: 0.7; } 50% { transform: scale(1.15); opacity: 1; } }

.floating-card {
    position: absolute; background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(20px);
    border-radius: 12px; padding: 10px 16px; display: flex; align-items: center; gap: 10px;
    box-shadow: var(--shadow-md); animation: floatCard 4s ease-in-out infinite;
    border: 1px solid rgba(255,255,255,0.5);
}
.card-1 { top: 10%; left: -6%; }
.card-2 { top: 42%; right: -6%; animation-delay: 1s; }
.card-3 { bottom: 10%; left: 8%; animation-delay: 2s; }
@keyframes floatCard { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
.card-icon { font-size: 1.2rem; }
.card-text { display: flex; flex-direction: column; }
.card-text strong { font-size: 0.8rem; color: var(--ink); }
.card-text span { font-size: 0.66rem; color: var(--gray-500); }

.about-content .section-tag { display: inline-block; margin-bottom: 14px; }
.about-content .section-title { text-align: left; }
.about-desc { font-size: 0.95rem; color: var(--gray-500); line-height: 1.9; margin-bottom: 14px; letter-spacing: 0.2px; }
.about-desc strong { color: var(--ink); font-weight: 600; }

.about-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.about-tag {
    padding: 6px 16px; background: var(--gray-50); border-radius: 100px;
    font-size: 0.8rem; color: var(--gray-700); font-weight: 500;
    border: 1px solid rgba(0,0,0,0.05);
    transition: var(--transition);
}
.about-tag:hover { border-color: var(--orange); color: var(--orange); }

/* ==================== 办公环境 ==================== */
.environment { background: var(--gray-50); }
.env-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; grid-template-rows: 280px 280px; gap: 16px; }
.env-item {
    position: relative; border-radius: var(--radius); overflow: hidden;
    cursor: pointer; transition: var(--transition-slow);
    box-shadow: var(--shadow-sm);
}
.env-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.env-item img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition-slow); }
.env-item:hover img { transform: scale(1.05); }
.env-overlay {
    position: absolute; inset: 0; display: flex; flex-direction: column;
    justify-content: flex-end; padding: 24px;
    background: linear-gradient(to top, rgba(9,9,11,0.7) 0%, rgba(9,9,11,0.1) 50%, transparent 70%);
    transition: var(--transition-slow);
}
.env-item:hover .env-overlay { background: linear-gradient(to top, rgba(9,9,11,0.5) 0%, rgba(9,9,11,0.05) 50%, transparent 70%); }
.env-tag {
    display: inline-block; padding: 3px 10px; background: rgba(232, 92, 46, 0.85);
    color: var(--white); font-size: 0.68rem; font-weight: 600; border-radius: 100px;
    letter-spacing: 0.5px; margin-bottom: 8px; width: fit-content; backdrop-filter: blur(10px);
}
.env-overlay h4 { font-size: 1.1rem; font-weight: 700; color: var(--white); }
.env-main { grid-row: 1 / 3; }

/* ==================== 精选案例 ==================== */
.cases { background: var(--white); }
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
    background: var(--white); border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow-xs); transition: var(--transition-slow);
    border: 1px solid rgba(0, 0, 0, 0.03); cursor: pointer;
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.case-image {
    position: relative; aspect-ratio: 16 / 10; overflow: hidden;
    display: flex; align-items: center; justify-content: center;
}
.case-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(9,9,11,0.55) 0%, rgba(9,9,11,0.15) 100%);
    transition: var(--transition-slow);
}
.case-card:hover .case-overlay { background: linear-gradient(135deg, rgba(232,92,46,0.45) 0%, rgba(122,90,245,0.25) 100%); }
.case-img-1 { background: linear-gradient(135deg, #e85c2e, #eab308); }
.case-img-2 { background: linear-gradient(135deg, #7a5af5, #6366e5); }
.case-img-3 { background: linear-gradient(135deg, #10b981, #34d399); }
.case-img-4 { background: linear-gradient(135deg, #e85c2e, #c74a1f); }
.case-img-5 { background: linear-gradient(135deg, #7a5af5, #b8860b); }
.case-img-6 { background: linear-gradient(135deg, #09090b, #16161a); }
.case-tag {
    position: relative; z-index: 1; padding: 5px 14px;
    background: rgba(255, 255, 255, 0.12); backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2); border-radius: 100px;
    color: var(--white); font-size: 0.74rem; font-weight: 500; letter-spacing: 0.5px;
}
.case-body { padding: 22px 24px 26px; }
.case-category { font-size: 0.74rem; color: var(--orange); font-weight: 600; letter-spacing: 0.5px; margin-bottom: 7px; }
.case-title { font-size: 1rem; font-weight: 700; color: var(--ink); margin-bottom: 9px; line-height: 1.4; }
.case-desc { font-size: 0.84rem; color: var(--gray-500); line-height: 1.7; }

/* ==================== 服务客户 ==================== */
.clients { background: var(--gray-50); }
.clients-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.client-category {
    background: var(--white); border-radius: var(--radius); padding: 26px 22px;
    box-shadow: var(--shadow-xs); transition: var(--transition-slow);
    border: 1px solid rgba(0, 0, 0, 0.02);
}
.client-category:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: rgba(232,92,46,0.08); }
.client-cat-icon { font-size: 1.5rem; margin-bottom: 10px; }
.client-cat-title { font-size: 0.85rem; font-weight: 700; color: var(--purple); margin-bottom: 14px; letter-spacing: 0.5px; }
.client-tags { display: flex; flex-wrap: wrap; gap: 7px; }
.client-tag {
    padding: 5px 12px; background: var(--gray-50); border-radius: 100px;
    font-size: 0.78rem; color: var(--gray-700); border: 1px solid rgba(0,0,0,0.03);
    transition: var(--transition);
}
.client-tag:hover { background: var(--orange); color: var(--white); border-color: var(--orange); }

/* ==================== 旗下厂牌 ==================== */
.brands { background: var(--white); }
.brands-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.brand-card {
    background: var(--white); border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow-xs); transition: var(--transition-slow);
    border: 1px solid rgba(0, 0, 0, 0.03);
}
.brand-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.brand-card-featured {
    border: 1.5px solid rgba(122, 90, 245, 0.15);
    background: linear-gradient(180deg, rgba(122, 90, 245, 0.02) 0%, var(--white) 100%);
    position: relative;
}
.brand-card-badge {
    position: absolute; top: 14px; right: 14px;
    padding: 3px 12px; background: var(--gradient-cool); color: var(--white);
    font-size: 0.65rem; border-radius: 100px; font-weight: 500; z-index: 1; letter-spacing: 0.5px;
}
.brand-header { padding: 32px 28px 18px; text-align: center; }
.brand-logo {
    width: 60px; height: 60px; margin: 0 auto 14px;
    display: flex; align-items: center; justify-content: center;
    background: var(--gray-50); border-radius: 16px; font-size: 1.6rem;
    border: 1px solid rgba(0,0,0,0.03);
}
.brand-card-featured .brand-logo { background: rgba(122, 90, 245, 0.05); border-color: rgba(122, 90, 245, 0.08); }
.brand-name { font-size: 1.15rem; font-weight: 700; color: var(--ink); margin-bottom: 4px; letter-spacing: 0.3px; }
.brand-positioning { font-size: 0.78rem; color: var(--orange); font-weight: 500; letter-spacing: 0.5px; }
.brand-card-featured .brand-positioning { color: var(--purple); }
.brand-body { padding: 0 28px 28px; }
.brand-desc { font-size: 0.86rem; color: var(--gray-500); line-height: 1.8; margin-bottom: 18px; text-align: center; }
.brand-tags { display: flex; flex-wrap: wrap; gap: 7px; justify-content: center; }
.brand-tags span {
    padding: 4px 12px; background: var(--gray-50); border-radius: 100px;
    font-size: 0.75rem; color: var(--gray-700); border: 1px solid rgba(0,0,0,0.03);
}
.brand-card-featured .brand-tags span { background: rgba(122, 90, 245, 0.04); color: var(--purple-deep); border-color: rgba(122, 90, 245, 0.08); }

/* ==================== 联系我们 ==================== */
.contact { background: var(--dark); position: relative; overflow: hidden; }
.contact::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(circle at 25% 50%, rgba(232, 92, 46, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 75% 50%, rgba(122, 90, 245, 0.06) 0%, transparent 50%);
}
.contact::after {
    content: ''; position: absolute; inset: 0;
    background-image: linear-gradient(rgba(255,255,255,0.012) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.012) 1px, transparent 1px);
    background-size: 60px 60px; pointer-events: none;
}
.contact .container { position: relative; z-index: 1; }

.contact-wrapper {
    display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 44px;
    max-width: 1080px; margin: 0 auto; align-items: start;
}
.contact-info-side { display: flex; flex-direction: column; gap: 20px; }
.contact-info-side .contact-cards { grid-template-columns: 1fr; max-width: none; }
.contact-socials h4 {
    color: rgba(255, 255, 255, 0.5); font-size: 0.78rem; font-weight: 600;
    letter-spacing: 2.5px; margin-bottom: 12px; text-transform: uppercase;
}
.contact-social-tags { display: flex; flex-wrap: wrap; gap: 8px; }

.contact-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; max-width: 900px; margin: 0 auto; }
.contact-card {
    background: var(--glass); backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border); border-radius: var(--radius);
    padding: 36px 28px; text-align: center; transition: var(--transition-slow);
}
.contact-card:hover { background: var(--glass-light); transform: translateY(-3px); border-color: rgba(232,92,46,0.12); }
.contact-card-icon { font-size: 2rem; margin-bottom: 14px; }
.contact-card-label { font-size: 0.68rem; color: var(--orange); letter-spacing: 3px; margin-bottom: 9px; font-weight: 600; text-transform: uppercase; }
.contact-card-value { font-size: 1.05rem; color: var(--white); font-weight: 500; line-height: 1.6; letter-spacing: 0.3px; }

/* 联系表单 */
.contact-form {
    background: var(--glass); backdrop-filter: blur(24px);
    border: 1px solid var(--glass-border); border-radius: var(--radius);
    padding: 36px 32px; position: relative;
}
.form-title { font-size: 1.3rem; font-weight: 700; color: var(--white); margin-bottom: 5px; }
.form-subtitle { font-size: 0.85rem; color: rgba(255, 255, 255, 0.4); margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-group { display: flex; flex-direction: column; gap: 7px; }
.form-group-full { margin-bottom: 16px; }
.form-group label { font-size: 0.78rem; color: rgba(255, 255, 255, 0.55); font-weight: 500; letter-spacing: 0.3px; }
.form-group input,
.form-group select,
.form-group textarea {
    background: rgba(255, 255, 255, 0.04); border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xs); padding: 12px 16px; color: var(--white);
    font-size: 0.88rem; font-family: inherit; transition: var(--transition);
    outline: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255, 255, 255, 0.25); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--orange); background: rgba(255, 255, 255, 0.06);
    box-shadow: 0 0 0 3px rgba(232, 92, 46, 0.08);
}
.form-group select { cursor: pointer; }
.form-group select option { background: var(--dark-2); color: var(--white); }
.form-group textarea { resize: vertical; }

.form-checkboxes { display: flex; flex-wrap: wrap; gap: 8px; }
.form-check {
    display: inline-flex; align-items: center; gap: 6px; cursor: pointer;
    padding: 6px 12px; background: rgba(255, 255, 255, 0.03); border-radius: 100px;
    border: 1px solid rgba(255, 255, 255, 0.06); transition: var(--transition);
    font-size: 0.78rem; color: rgba(255, 255, 255, 0.55);
}
.form-check:hover { border-color: rgba(232, 92, 46, 0.25); color: rgba(255, 255, 255, 0.75); }
.form-check input { width: 13px; height: 13px; accent-color: var(--orange); cursor: pointer; }
.form-check input:checked + span { color: var(--orange); }
.form-check:has(input:checked) { border-color: rgba(232, 92, 46, 0.25); background: rgba(232, 92, 46, 0.06); }

.form-submit { width: 100%; margin-top: 6px; padding: 14px; font-size: 0.95rem; }

.form-success {
    display: none; position: absolute; inset: 0; background: var(--dark);
    border-radius: var(--radius); flex-direction: column; align-items: center;
    justify-content: center; gap: 14px; text-align: center; padding: 36px;
}
.form-success.show { display: flex; animation: fadeIn 0.4s ease; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.form-success-icon {
    width: 60px; height: 60px; border-radius: 50%;
    background: var(--gradient-warm); display: flex; align-items: center;
    justify-content: center; font-size: 1.8rem; color: var(--white);
    box-shadow: 0 8px 28px rgba(232, 92, 46, 0.25);
}
.form-success p { color: rgba(255, 255, 255, 0.65); font-size: 0.95rem; line-height: 1.6; }

/* ==================== 页脚 ==================== */
.footer { background: var(--dark-2); color: rgba(255, 255, 255, 0.45); padding: 56px 0 20px; }
.footer-top { display: grid; grid-template-columns: 1.5fr 2fr; gap: 56px; padding-bottom: 36px; border-bottom: 1px solid rgba(255, 255, 255, 0.05); }

.footer-brand .logo { margin-bottom: 10px; }
.footer-brand .logo-img { height: 36px; width: 36px; }
.footer-brand .logo-text { color: var(--white); }
.footer-tagline { font-size: 0.68rem; color: var(--orange); letter-spacing: 4px; margin-bottom: 14px; font-weight: 600; text-transform: uppercase; }
.footer-desc { font-size: 0.86rem; line-height: 1.8; max-width: 320px; }

.footer-socials { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 18px; }
.social-link {
    padding: 5px 12px; background: rgba(255, 255, 255, 0.04); border-radius: 100px;
    font-size: 0.78rem; color: rgba(255, 255, 255, 0.55); transition: var(--transition);
    display: inline-flex; align-items: center; gap: 4px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}
.social-link:hover { background: var(--orange); color: var(--white); transform: translateY(-2px); border-color: var(--orange); }

.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; }
.footer-col h4 { color: var(--white); font-size: 0.85rem; margin-bottom: 14px; font-weight: 600; letter-spacing: 0.5px; }
.footer-col ul { display: flex; flex-direction: column; gap: 8px; }
.footer-col a { font-size: 0.82rem; color: rgba(255, 255, 255, 0.35); transition: var(--transition); }
.footer-col a:hover { color: var(--orange); }

.footer-bottom { padding-top: 20px; text-align: center; font-size: 0.76rem; color: rgba(255, 255, 255, 0.2); letter-spacing: 0.5px; }

/* ==================== 回到顶部 ==================== */
.back-to-top {
    position: fixed; bottom: 28px; right: 28px; width: 42px; height: 42px;
    background: var(--gradient-warm); color: var(--white); border: none;
    border-radius: 50%; font-size: 1.1rem; cursor: pointer;
    transition: var(--transition); opacity: 0; visibility: hidden; z-index: 999;
    box-shadow: 0 4px 18px rgba(232, 92, 46, 0.25);
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(232, 92, 46, 0.35); }

/* ==================== 加载动画 ==================== */
.loader {
    position: fixed; inset: 0; z-index: 9999; background: var(--dark);
    display: flex; align-items: center; justify-content: center;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}
.loader.hidden { opacity: 0; visibility: hidden; }
.loader-content { display: flex; flex-direction: column; align-items: center; gap: 18px; }
.loader-logo img {
    width: 56px; height: 56px; border-radius: 50%;
    animation: loaderPulse 1.5s ease-in-out infinite;
}
@keyframes loaderPulse {
    0%, 100% { transform: scale(1); opacity: 0.7; }
    50% { transform: scale(1.1); opacity: 1; }
}
.loader-bar {
    width: 110px; height: 2px; background: rgba(255, 255, 255, 0.08);
    border-radius: 2px; overflow: hidden; position: relative;
}
.loader-bar::after {
    content: ''; position: absolute; left: 0; top: 0; height: 100%;
    width: 40%; background: var(--gradient-warm); border-radius: 2px;
    animation: loaderBar 1.2s ease-in-out infinite;
}
@keyframes loaderBar {
    0% { left: -40%; } 100% { left: 100%; }
}

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
    .env-grid { grid-template-columns: 1fr 1fr; grid-template-rows: 240px 240px; }
    .env-main { grid-row: 1 / 2; }
    .env-item:nth-child(4) { grid-column: 1 / 2; }
    .env-item:nth-child(5) { grid-column: 2 / 3; }
}

@media (max-width: 968px) {
    .section { padding: 64px 0; }
    .section-title { font-size: 1.7rem; }

    .nav-menu {
        position: fixed; top: 0; right: -100%; width: 280px; height: 100vh;
        background: var(--white); flex-direction: column; padding: 80px 30px 30px;
        gap: 14px; transition: right 0.4s ease; box-shadow: -4px 0 30px rgba(0,0,0,0.08);
        align-items: flex-start;
    }
    .nav-menu.active { right: 0; }
    .nav-link { color: var(--gray-700) !important; font-size: 0.95rem; }
    .nav-cta { color: var(--white) !important; }
    .hamburger { display: flex; }
    .navbar.scrolled .logo-text { color: var(--ink); }
    .logo-text { color: var(--white); }

    .hero-title { font-size: 2.2rem; }
    .hero-subtitle { font-size: 0.95rem; }
    .hero-stats { gap: 28px; }

    .mv-grid { grid-template-columns: 1fr; }
    .values-grid { grid-template-columns: repeat(2, 1fr); }

    .biz-flow { gap: 6px; }
    .biz-flow-item { padding: 6px 14px; font-size: 0.78rem; }
    .biz-grid { grid-template-columns: 1fr; }

    .about-wrapper { grid-template-columns: 1fr; gap: 44px; }
    .about-content .section-title { text-align: center; }
    .about-content .section-tag { display: block; text-align: center; }

    .env-grid { grid-template-columns: 1fr 1fr; grid-template-rows: 200px 200px; }
    .env-main { grid-row: 1 / 2; }

    .cases-grid { grid-template-columns: 1fr 1fr; }
    .clients-grid { grid-template-columns: 1fr 1fr; }
    .brands-grid { grid-template-columns: 1fr; }
    .contact-cards { grid-template-columns: 1fr; }
    .contact-wrapper { grid-template-columns: 1fr; gap: 28px; }

    .footer-top { grid-template-columns: 1fr; gap: 36px; }
}

@media (max-width: 640px) {
    .section { padding: 48px 0; }
    .section-title { font-size: 1.4rem; }
    .container { padding: 0 20px; }

    .hero-title { font-size: 1.75rem; }
    .hero-actions { flex-direction: column; width: 100%; }
    .hero-actions .btn { width: 100%; }
    .hero-stats { flex-wrap: wrap; gap: 14px; }
    .hero-stat-divider { display: none; }

    .values-grid { grid-template-columns: 1fr; }
    .env-grid { grid-template-columns: 1fr; grid-template-rows: auto; }
    .env-item { grid-column: 1 / -1 !important; grid-row: auto !important; aspect-ratio: 16/9; }
    .clients-grid { grid-template-columns: 1fr; }
    .cases-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .contact-form { padding: 24px 20px; }

    .mv-card, .vision-box { padding: 24px 20px; }
    .biz-card { padding: 22px; }

    .footer-links { grid-template-columns: 1fr; gap: 20px; }

    .back-to-top { bottom: 18px; right: 18px; width: 38px; height: 38px; }
}