/* 全局重置 */
* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, BlinkMacSystemFont, sans-serif; }

:root {
    --primary: #0D47A1; --secondary: #1565C0; --accent: #E64A19; --accent-hover: #D84315;
    --overseas: #2C7DA0; --overseas-hover: #1F5E7A; --light-bg: #F8FBFF;
    --dark: #202124; --gray: #5F6368; --border-radius: 16px;
    --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08); --transition: all 0.2s ease;
}

/* 语言显隐核心 */
body.lang-zh .lang-en { display: none !important; }
body.lang-en .lang-zh { display: none !important; }

body { background: #FFF; min-height: 100vh; padding: 20px; display: flex; flex-direction: column; align-items: center; justify-content: center; position: relative; overflow-x: hidden; }
body::after { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background-image: radial-gradient(2px 2px at 20px 30px, rgba(33,150,243,0.08), transparent), radial-gradient(2px 2px at 40px 70px, rgba(33,150,243,0.06), transparent), radial-gradient(1px 1px at 90px 40px, rgba(33,150,243,0.1), transparent), radial-gradient(1px 1px at 130px 80px, rgba(33,150,243,0.06), transparent); background-repeat: repeat; background-size: 200px 100px; z-index: -1; opacity: 0.4; }

.container { width: 100%; max-width: 900px; margin: 0 auto; }
.domain-card { background: rgba(255,255,255,0.95); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-radius: var(--border-radius); padding: 50px; box-shadow: var(--box-shadow); text-align: center; position: relative; overflow: hidden; border: 1px solid #E8F4FD; animation: fadeIn 0.8s ease-out; }
@supports not (backdrop-filter: blur(10px)) { .domain-card { background: #FFF; } }
.domain-card::before { content: ''; position: absolute; top: -20%; right: -15%; width: 200px; height: 200px; background: rgba(33,150,243,0.05); border-radius: 50%; z-index: 0; }

.domain-header { margin-bottom: 30px; position: relative; z-index: 1; }
.domain-header h1 { font-size: clamp(1.2rem, 4vw, 1.8rem); font-weight: 600; margin-bottom: 0.8rem; color: #202124; text-align: center; line-height: 1.3; }
.domain-name-link { font-size: clamp(2rem, 8vw, 4rem); font-weight: 700; letter-spacing: 0.5px; text-align: center; color: #E64A19; line-height: 1.2; word-break: break-all; overflow-wrap: break-word; text-shadow: 0 1px 4px rgba(230,74,25,0.2); text-decoration: none; display: inline-block; transition: var(--transition); }
.domain-name-link:hover { transform: translateY(-5px); color: #D84315; }

.domain-image { margin: 30px 0; position: relative; z-index: 1; text-align: center; }
.domain-image img { max-width: 480px; width: auto; height: auto; border-radius: var(--border-radius); box-shadow: var(--box-shadow); transition: var(--transition); display: block; margin: 0 auto; }
.domain-image img:hover { transform: translateY(-8px) scale(1.02); box-shadow: 0 12px 28px rgba(0,0,0,0.12); }

.description { margin-bottom: 30px; color: var(--gray); font-size: 1.0rem; line-height: 1.6; text-align: left; position: relative; z-index: 1; background: #F8FBFF; border-left: 3px solid #2196F3; padding: 1rem 1.25rem; border-radius: 8px; }

.platforms-title { font-size: 1.6rem; color: var(--secondary); margin: 40px 0 25px; position: relative; padding-bottom: 15px; z-index: 1; font-weight: 600; }
.platforms-title:after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 80px; height: 4px; background: #2196F3; border-radius: 2px; }

.platforms-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 40px; position: relative; z-index: 1; }
.platform-btn-cn { display: flex; align-items: center; justify-content: center; padding: 0.85rem 1.2rem; background: #E64A19; color: #FFF; border-radius: 8px; font-weight: 700; transition: var(--transition); text-align: center; text-decoration: none; box-shadow: 0 4px 12px rgba(230,74,25,0.3); border: none; font-size: clamp(0.9rem, 2.5vw, 1rem); }
.platform-btn-cn:hover { background: #D84315; transform: translateY(-5px); box-shadow: 0 6px 16px rgba(230,74,25,0.4); color: #fff; }
.platform-btn-overseas { display: flex; align-items: center; justify-content: center; padding: 0.85rem 1.5rem; background: #E3F2FD; color: #0D47A1; border-radius: 8px; font-weight: 700; transition: var(--transition); text-align: center; text-decoration: none; box-shadow: 0 2px 8px rgba(44,125,160,0.2); border: none; font-size: clamp(0.9rem, 2.5vw, 1rem); }
.platform-btn-overseas:hover { background: #2196F3; transform: translateY(-3px); box-shadow: 0 4px 12px rgba(44,125,160,0.3); color: #fff; }

.contact-info { background: #F8FBFF; padding: 1.5rem; border-radius: 8px; margin: 2rem 0 0; border: 1px solid #E8F4FD; text-align: center; position: relative; z-index: 1; }
.contact-title { font-size: 1.3rem; margin-bottom: 15px; color: #202124; font-weight: 600; }
.contact-info p { color: #5F6368; margin-bottom: 1rem; }
.contact-details { display: flex; flex-wrap: wrap; justify-content: center; gap: 20px; margin-top: 15px; }
.contact-item span { background: rgba(33,150,243,0.1); padding: 0.3rem 0.8rem; border-radius: 4px; color: #2196F3; font-weight: 600; transition: var(--transition); display: inline-block; font-size: 1rem; }
.contact-item span:hover { background: rgba(33,150,243,0.2); transform: translateY(-2px); }

footer { text-align: center; padding: 30px 0 20px; color: var(--gray); font-size: 0.8rem; margin-top: 40px; width: 100%; border-top: 1px solid #E8F4FD; }
footer p { margin-bottom: 8px; }

@media (max-width: 900px) { .platforms-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px) {
    .domain-card { padding: 30px 25px; box-shadow: none; border: none; border-radius: 0; }
    .container { max-width: 100%; } body { padding: 0; }
    .contact-details { flex-direction: column; gap: 12px; }
    .domain-header h1 { font-size: 1.3rem; } .domain-name-link { font-size: 2.5rem; } .description { font-size: 0.95rem; }
    .domain-image img { max-width: 100%; }
}
@media (max-width: 600px) { .platforms-grid { grid-template-columns: 1fr; } .domain-image img { max-width: 100%; } }
@media (max-width: 480px) {
    .domain-card { padding: 25px 20px; } .platforms-title { font-size: 1.6rem; }
    .description { font-size: 0.9rem; padding: 0.8rem 1rem; }
    .platform-btn-cn, .platform-btn-overseas { padding: 12px 15px; font-size: 0.9rem; }
    .domain-header h1 { font-size: 1.1rem; } .domain-name-link { font-size: 2rem; }
    .domain-image img { max-width: 100%; }
}
@media (hover: none) and (pointer: coarse) { .platform-btn-cn, .platform-btn-overseas, .contact-item span, .domain-name-link { min-height: 44px; min-width: 44px; } }

@keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.highlight { position: absolute; top: 0; left: 0; right: 0; height: 6px; background: linear-gradient(to right, #2196F3, #E64A19); border-radius: var(--border-radius) var(--border-radius) 0 0; }
@media print { body { background: #fff; padding: 0; } .domain-card { box-shadow: none; border: 1px solid #ccc; backdrop-filter: none; } .platform-btn-cn, .platform-btn-overseas, .domain-image, .highlight { display: none; } .contact-info { border: 1px solid #ccc; } }