/* Global Styles */
:root {
    --primary-color: #990000;
    --secondary-color: #c51313;
    --bg-color: #f3f4f6;
    --text-color: #1f2937;
    --card-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(255, 255, 255, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
}

body {
    background: linear-gradient(135deg, #e0e7ff 0%, #f3f4f6 100%);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3 {
    color: #111827;
    margin-bottom: 1rem;
}

p {
    line-height: 1.6;
    color: #4b5563;
    margin-bottom: 1rem;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: color 0.3s ease;
}

a:hover {
    color: var(--secondary-color);
}

/* Layout Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.full-height {
    min-height: 100vh;
}

/* Header (for Index) */
header {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary-color);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links a {
    margin-left: 2rem;
    color: #4b5563;
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--primary-color);
}

/* Hero Section (for Index) */
.hero {
    padding: 5rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, #111827, #4b5563);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--primary-color);
    color: white;
    border-radius: 0.5rem;
    font-weight: 600;
    box-shadow: 0 4px 6px -1px rgba(79, 70, 229, 0.1), 0 2px 4px -1px rgba(79, 70, 229, 0.06);
    transition: all 0.3s ease;
}

.btn:hover {
    background: #c51313;
    transform: translateY(-1px);
    box-shadow: 0 10px 15px -3px rgba(79, 70, 229, 0.2), 0 4px 6px -2px rgba(79, 70, 229, 0.1);
    color: white;
}

/* Features Grid (for Index) */
.features {
    padding: 4rem 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

/* Footer */
footer {
    background: #f9fafb;
    padding: 2rem 0;
    text-align: center;
    margin-top: auto;
    border-top: 1px solid #e5e7eb;
}

/* Redirect Page Specifics */
.redirect-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    text-align: center;
}

.redirect-card {
    background: rgba(255, 255, 255, 0.95);
    padding: 3rem;
    border-radius: 1.5rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    max-width: 450px;
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.avatar-box {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid #e0e7ff;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* WeChat Overlay */
#weixin-tip {
    display: none;
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    filter: alpha(opacity=80);
    height: 100%;
    width: 100%;
    z-index: 9999;
}

#weixin-tip p {
    text-align: center;
    margin-top: 10%;
    padding: 0 5%;
}

#weixin-tip img {
    max-width: 100%;
    height: auto;
}

.tip-content {
    color: white;
    font-size: 1.2rem;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    padding-right: 30px;
    padding-top: 20px;
}

.arrow-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 10px;
    animation: bounce 2s infinite;
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0);
    }

    40% {
        transform: translateY(-10px);
    }

    60% {
        transform: translateY(-5px);
    }
}