:root {
    --primary-50: #FFF1F0;
    --primary-100: #FFE4E1;
    --primary-200: #FFCEC9;
    --primary-300: #FFAFA6;
    --primary-400: #FF8275;
    --primary-500: #F5564A;
    --primary-600: #E63D30;
    --primary-700: #C32B20;
    --primary-800: #9F241C;
    --primary-900: #85211C;
    
    --primary: #F5564A;
    --primary-light: #FF8275;
    --primary-dark: #C32B20;
    --primary-gradient: linear-gradient(135deg, #FF8275 0%, #F5564A 50%, #E63D30 100%);
    --primary-glow: 0 4px 20px rgba(245, 86, 74, 0.35);
    
    --accent-50: #FFF8E6;
    --accent-100: #FFEFC2;
    --accent-200: #FFE599;
    --accent-300: #FFD966;
    --accent-400: #FFCC33;
    --accent-500: #FFBF00;
    --accent-600: #E5A800;
    --accent-700: #CC9600;
    --accent-800: #A67C00;
    --accent-900: #806200;
    
    --accent: #FFBF00;
    --accent-light: #FFD966;
    --accent-dark: #E5A800;
    --accent-gradient: linear-gradient(135deg, #FFE599 0%, #FFBF00 50%, #E5A800 100%);
    --accent-glow: 0 4px 20px rgba(255, 191, 0, 0.35);
    
    --wechat-50: #E8F8ED;
    --wechat-100: #C6F0D2;
    --wechat-200: #9AE7B3;
    --wechat-300: #6DDD93;
    --wechat-400: #47D276;
    --wechat-500: #1AAD19;
    --wechat-600: #0F8A0E;
    --wechat-700: #076708;
    --wechat-800: #004400;
    --wechat-900: #002200;
    
    --wechat: #07C160;
    --wechat-light: #47D276;
    --wechat-dark: #0F8A0E;
    --wechat-gradient: linear-gradient(135deg, #47D276 0%, #07C160 50%, #0F8A0E 100%);
    --wechat-glow: 0 4px 20px rgba(7, 193, 96, 0.35);
    
    --alipay-50: #E6F1FF;
    --alipay-100: #B3D4FF;
    --alipay-200: #80B7FF;
    --alipay-300: #4D9AFF;
    --alipay-400: #1A7DFF;
    --alipay-500: #0066FF;
    --alipay-600: #0052CC;
    --alipay-700: #003D99;
    --alipay-800: #002966;
    --alipay-900: #001433;
    
    --alipay: #1677FF;
    --alipay-light: #4D9AFF;
    --alipay-dark: #0052CC;
    --alipay-gradient: linear-gradient(135deg, #4D9AFF 0%, #1677FF 50%, #0052CC 100%);
    --alipay-glow: 0 4px 20px rgba(22, 119, 255, 0.35);
    
    --surface-50: #FAF9F8;
    --surface-100: #F5F3F1;
    --surface-200: #EBE8E4;
    --surface-300: #DDD8D2;
    --surface-400: #C7C0B8;
    --surface-500: #B0A69C;
    --surface-600: #9A8F83;
    --surface-700: #847769;
    --surface-800: #6E6357;
    --surface-900: #584F45;
    
    --surface-dark-50: #2D2926;
    --surface-dark-100: #262220;
    --surface-dark-200: #201E1C;
    --surface-dark-300: #1A1817;
    --surface-dark-400: #151312;
    --surface-dark-500: #100F0E;
    --surface-dark-600: #0B0A09;
    --surface-dark-700: #050505;
    --surface-dark-800: #030303;
    --surface-dark-900: #000000;
    
    --bg-base: #0F0E0D;
    --bg-surface: #1A1817;
    --bg-elevated: #262220;
    --bg-overlay: rgba(15, 14, 13, 0.95);
    --bg-card: rgba(38, 34, 32, 0.95);
    --bg-glass: rgba(38, 34, 32, 0.85);
    
    --text-primary: #FAF9F8;
    --text-secondary: rgba(250, 249, 248, 0.75);
    --text-muted: rgba(250, 249, 248, 0.50);
    --text-disabled: rgba(250, 249, 248, 0.30);
    
    --text-accent: #FFBF00;
    --text-primary-color: #F5564A;
    
    --success: #10B981;
    --success-light: #34D399;
    --success-dark: #059669;
    --success-bg: rgba(16, 185, 129, 0.12);
    
    --error: #EF4444;
    --error-light: #F87171;
    --error-dark: #DC2626;
    --error-bg: rgba(239, 68, 68, 0.12);
    
    --warning: #F59E0B;
    --warning-light: #FBBF24;
    --warning-dark: #D97706;
    --warning-bg: rgba(245, 158, 11, 0.12);
    
    --info: #3B82F6;
    --info-light: #60A5FA;
    --info-dark: #2563EB;
    --info-bg: rgba(59, 130, 246, 0.12);
    
    --white: #FFFFFF;
    --black: #000000;
    --transparent: transparent;
    
    --border-subtle: rgba(250, 249, 248, 0.08);
    --border-default: rgba(250, 249, 248, 0.12);
    --border-emphasis: rgba(250, 249, 248, 0.20);
    --border-accent: rgba(255, 191, 0, 0.30);
    --border-primary: rgba(245, 86, 74, 0.30);
    
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.15);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.12);
    --shadow-2xl: 0 24px 48px rgba(0, 0, 0, 0.16);
    
    --shadow-accent: 0 4px 20px rgba(255, 191, 0, 0.20);
    --shadow-primary: 0 4px 20px rgba(245, 86, 74, 0.25);
    --shadow-wechat: 0 4px 20px rgba(7, 193, 96, 0.25);
    --shadow-alipay: 0 4px 20px rgba(22, 119, 255, 0.25);
    --shadow-glow: 0 0 40px rgba(245, 86, 74, 0.15), 0 0 80px rgba(255, 191, 0, 0.08);
    
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --radius-full: 9999px;
    
    --spacing-0: 0;
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
    
    --font-xs: 0.75rem;
    --font-sm: 0.875rem;
    --font-base: 1rem;
    --font-lg: 1.125rem;
    --font-xl: 1.25rem;
    --font-2xl: 1.5rem;
    --font-3xl: 1.875rem;
    --font-4xl: 2.25rem;
    --font-5xl: 3rem;
    
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
    
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    
    --leading-none: 1;
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;
    
    --tracking-tight: -0.025em;
    --tracking-normal: 0;
    --tracking-wide: 0.025em;
    --tracking-wider: 0.05em;
    
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
    --z-toast: 9999;
}

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: var(--font-base);
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background: var(--bg-base);
    min-height: 100vh;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 20% 20%, rgba(245, 86, 74, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 80% 80%, rgba(255, 191, 0, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse 100% 100% at 50% 50%, var(--bg-base) 0%, transparent 100%);
    pointer-events: none;
    z-index: -1;
}

.m-container {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    padding: var(--spacing-6);
    position: relative;
    z-index: 1;
}

.m-container-sm { max-width: 384px; }
.m-container-md { max-width: 480px; }
.m-container-lg { max-width: 640px; }
.m-container-xl { max-width: 768px; }

.m-flex { display: flex; }
.m-flex-col { flex-direction: column; }
.m-flex-row { flex-direction: row; }
.m-flex-wrap { flex-wrap: wrap; }
.m-items-center { align-items: center; }
.m-items-start { align-items: flex-start; }
.m-items-end { align-items: flex-end; }
.m-justify-center { justify-content: center; }
.m-justify-between { justify-content: space-between; }
.m-justify-end { justify-content: flex-end; }
.m-gap-1 { gap: var(--spacing-1); }
.m-gap-2 { gap: var(--spacing-2); }
.m-gap-3 { gap: var(--spacing-3); }
.m-gap-4 { gap: var(--spacing-4); }
.m-gap-6 { gap: var(--spacing-6); }
.m-gap-8 { gap: var(--spacing-8); }

.m-grid { display: grid; }
.m-grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.m-grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.m-grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.m-text-center { text-align: center; }
.m-text-left { text-align: left; }
.m-text-right { text-align: right; }

.m-text-xs { font-size: var(--font-xs); }
.m-text-sm { font-size: var(--font-sm); }
.m-text-base { font-size: var(--font-base); }
.m-text-lg { font-size: var(--font-lg); }
.m-text-xl { font-size: var(--font-xl); }
.m-text-2xl { font-size: var(--font-2xl); }
.m-text-3xl { font-size: var(--font-3xl); }
.m-text-4xl { font-size: var(--font-4xl); }

.m-font-normal { font-weight: var(--font-normal); }
.m-font-medium { font-weight: var(--font-medium); }
.m-font-semibold { font-weight: var(--font-semibold); }
.m-font-bold { font-weight: var(--font-bold); }

.m-text-primary { color: var(--text-primary); }
.m-text-secondary { color: var(--text-secondary); }
.m-text-muted { color: var(--text-muted); }
.m-text-accent { color: var(--accent); }
.m-text-red { color: var(--primary); }
.m-text-success { color: var(--success); }
.m-text-error { color: var(--error); }

.m-mb-1 { margin-bottom: var(--spacing-1); }
.m-mb-2 { margin-bottom: var(--spacing-2); }
.m-mb-3 { margin-bottom: var(--spacing-3); }
.m-mb-4 { margin-bottom: var(--spacing-4); }
.m-mb-6 { margin-bottom: var(--spacing-6); }
.m-mb-8 { margin-bottom: var(--spacing-8); }
.m-mt-1 { margin-top: var(--spacing-1); }
.m-mt-2 { margin-top: var(--spacing-2); }
.m-mt-4 { margin-top: var(--spacing-4); }
.m-mt-6 { margin-top: var(--spacing-6); }
.m-mx-auto { margin-left: auto; margin-right: auto; }

.m-p-1 { padding: var(--spacing-1); }
.m-p-2 { padding: var(--spacing-2); }
.m-p-3 { padding: var(--spacing-3); }
.m-p-4 { padding: var(--spacing-4); }
.m-p-6 { padding: var(--spacing-6); }
.m-p-8 { padding: var(--spacing-8); }
.m-px-4 { padding-left: var(--spacing-4); padding-right: var(--spacing-4); }
.m-px-6 { padding-left: var(--spacing-6); padding-right: var(--spacing-6); }
.m-py-2 { padding-top: var(--spacing-2); padding-bottom: var(--spacing-2); }
.m-py-3 { padding-top: var(--spacing-3); padding-bottom: var(--spacing-3); }
.m-py-4 { padding-top: var(--spacing-4); padding-bottom: var(--spacing-4); }

.m-w-full { width: 100%; }
.m-h-full { height: 100%; }
.m-min-h-screen { min-height: 100vh; }

.m-hidden { display: none; }
.m-block { display: block; }
.m-inline-block { display: inline-block; }
.m-inline-flex { display: inline-flex; }

.m-relative { position: relative; }
.m-absolute { position: absolute; }
.m-fixed { position: fixed; }
.m-sticky { position: sticky; }

.m-inset-0 { inset: 0; }
.m-top-0 { top: 0; }
.m-right-0 { right: 0; }
.m-bottom-0 { bottom: 0; }
.m-left-0 { left: 0; }

.m-z-0 { z-index: 0; }
.m-z-10 { z-index: 10; }
.m-z-20 { z-index: 20; }
.m-z-30 { z-index: 30; }
.m-z-40 { z-index: 40; }
.m-z-50 { z-index: 50; }

.m-opacity-0 { opacity: 0; }
.m-opacity-25 { opacity: 0.25; }
.m-opacity-50 { opacity: 0.5; }
.m-opacity-75 { opacity: 0.75; }
.m-opacity-100 { opacity: 1; }

.m-pointer-events-none { pointer-events: none; }
.m-pointer-events-auto { pointer-events: auto; }
.m-cursor-pointer { cursor: pointer; }
.m-select-none { user-select: none; }

.m-overflow-hidden { overflow: hidden; }
.m-overflow-auto { overflow: auto; }
.m-overflow-scroll { overflow: scroll; }

.m-rounded-none { border-radius: 0; }
.m-rounded-sm { border-radius: var(--radius-sm); }
.m-rounded { border-radius: var(--radius-md); }
.m-rounded-md { border-radius: var(--radius-md); }
.m-rounded-lg { border-radius: var(--radius-lg); }
.m-rounded-xl { border-radius: var(--radius-xl); }
.m-rounded-2xl { border-radius: var(--radius-2xl); }
.m-rounded-full { border-radius: var(--radius-full); }

.m-border { border-width: 1px; border-style: solid; }
.m-border-2 { border-width: 2px; border-style: solid; }
.m-border-0 { border-width: 0; }
.m-border-t { border-top-width: 1px; }
.m-border-b { border-bottom-width: 1px; }
.m-border-accent { border-color: var(--border-accent); }
.m-border-primary { border-color: var(--border-primary); }
.m-border-default { border-color: var(--border-default); }
.m-border-transparent { border-color: transparent; }

.m-shadow { box-shadow: var(--shadow-sm); }
.m-shadow-md { box-shadow: var(--shadow-md); }
.m-shadow-lg { box-shadow: var(--shadow-lg); }
.m-shadow-xl { box-shadow: var(--shadow-xl); }
.m-shadow-accent { box-shadow: var(--shadow-accent); }
.m-shadow-primary { box-shadow: var(--shadow-primary); }
.m-shadow-none { box-shadow: none; }

.m-bg-base { background-color: var(--bg-base); }
.m-bg-surface { background-color: var(--bg-surface); }
.m-bg-elevated { background-color: var(--bg-elevated); }
.m-bg-card { background-color: var(--bg-card); }
.m-bg-white { background-color: var(--white); }
.m-bg-black { background-color: var(--black); }
.m-bg-transparent { background-color: transparent; }
.m-bg-primary { background: var(--primary-gradient); }
.m-bg-accent { background: var(--accent-gradient); }
.m-bg-wechat { background: var(--wechat-gradient); }
.m-bg-alipay { background: var(--alipay-gradient); }
.m-bg-overlay { background-color: var(--bg-overlay); }

.m-transition { transition: all var(--transition-normal); }
.m-transition-fast { transition: all var(--transition-fast); }
.m-transition-slow { transition: all var(--transition-slow); }
.m-transition-none { transition: none; }

.m-transform { transform: translateZ(0); }
.m-scale-95 { transform: scale(0.95); }
.m-scale-100 { transform: scale(1); }
.m-scale-105 { transform: scale(1.05); }
.m--translate-y-1 { transform: translateY(-0.25rem); }
.m--translate-y-2 { transform: translateY(-0.5rem); }

.m-header {
    text-align: center;
    margin-bottom: var(--spacing-8);
}

.m-header-title {
    font-size: var(--font-xl);
    font-weight: var(--font-bold);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-2);
    letter-spacing: var(--tracking-tight);
}

.m-header-subtitle {
    font-size: var(--font-sm);
    color: var(--text-muted);
}

.m-header-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-3);
}

.m-nav {
    display: flex;
    gap: var(--spacing-2);
    background: var(--bg-elevated);
    padding: var(--spacing-1);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-6);
    box-shadow: var(--shadow-glow);
    border: 1px solid var(--border-subtle);
    position: relative;
    overflow: hidden;
}

.m-nav::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.5;
}

.m-nav-item {
    flex: 1;
    padding: var(--spacing-3) var(--spacing-4);
    background: transparent;
    border: none;
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    font-size: var(--font-sm);
    font-weight: var(--font-semibold);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    text-align: center;
}

.m-nav-item:hover {
    color: var(--text-accent);
    background: rgba(255, 191, 0, 0.06);
}

.m-nav-item.active {
    background: var(--primary-gradient);
    color: var(--white);
    box-shadow: var(--shadow-primary);
}

.m-nav-item.active::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 6px solid var(--primary);
}

.m-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    margin-bottom: var(--spacing-6);
    box-shadow: var(--shadow-glow);
    border: 1px solid var(--border-subtle);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.m-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-gradient);
}

.m-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-6);
    padding-bottom: var(--spacing-4);
    border-bottom: 1px solid var(--border-subtle);
}

.m-card-title {
    font-size: var(--font-lg);
    font-weight: var(--font-semibold);
    color: var(--text-accent);
}

.m-card-body {
    position: relative;
}

.m-form-group {
    margin-bottom: var(--spacing-5);
}

.m-form-label {
    display: block;
    margin-bottom: var(--spacing-2);
    color: var(--text-accent);
    font-weight: var(--font-medium);
    font-size: var(--font-sm);
    letter-spacing: var(--tracking-wide);
}

.m-form-label-required::after {
    content: ' *';
    color: var(--primary);
}

.m-form-input {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    background: rgba(250, 249, 248, 0.03);
    border: 2px solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-base);
    font-family: inherit;
    transition: all var(--transition-normal);
}

.m-form-input:hover {
    border-color: var(--border-emphasis);
}

.m-form-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(255, 191, 0, 0.12), var(--shadow-accent);
    background: rgba(250, 249, 248, 0.05);
}

.m-form-input::placeholder {
    color: var(--text-muted);
}

.m-form-input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.m-form-input-error {
    border-color: var(--error);
}

.m-form-input-error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.12);
}

.m-form-error {
    display: block;
    margin-top: var(--spacing-1);
    color: var(--error);
    font-size: var(--font-xs);
}

.m-form-hint {
    display: block;
    margin-top: var(--spacing-1);
    color: var(--text-muted);
    font-size: var(--font-xs);
}

.m-form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4);
}

.m-form-select {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    background: rgba(250, 249, 248, 0.03);
    border: 2px solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-base);
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-normal);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23FFBF00' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 40px;
}

.m-form-select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(255, 191, 0, 0.12);
}

.m-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    background: var(--primary-gradient);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-base);
    font-weight: var(--font-semibold);
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-primary);
    text-decoration: none;
    white-space: nowrap;
}

.m-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.m-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(245, 86, 74, 0.35);
}

.m-btn:hover::before {
    left: 100%;
}

.m-btn:active {
    transform: translateY(0);
}

.m-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.m-btn-block {
    width: 100%;
}

.m-btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-lg);
    border-radius: var(--radius-lg);
}

.m-btn-sm {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-sm);
}

.m-btn-primary {
    background: var(--primary-gradient);
    box-shadow: var(--shadow-primary);
}

.m-btn-accent {
    background: var(--accent-gradient);
    color: var(--bg-base);
    box-shadow: var(--shadow-accent);
}

.m-btn-accent:hover {
    box-shadow: 0 8px 24px rgba(255, 191, 0, 0.35);
}

.m-btn-wechat {
    background: var(--wechat-gradient);
    box-shadow: var(--shadow-wechat);
}

.m-btn-wechat:hover {
    box-shadow: 0 8px 24px rgba(7, 193, 96, 0.35);
}

.m-btn-alipay {
    background: var(--alipay-gradient);
    box-shadow: var(--shadow-alipay);
}

.m-btn-alipay:hover {
    box-shadow: 0 8px 24px rgba(22, 119, 255, 0.35);
}

.m-btn-outline {
    background: transparent;
    border: 2px solid var(--accent);
    color: var(--accent);
    box-shadow: none;
}

.m-btn-outline:hover {
    background: rgba(255, 191, 0, 0.08);
    box-shadow: var(--shadow-accent);
}

.m-btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    box-shadow: none;
}

.m-btn-ghost:hover {
    background: rgba(250, 249, 248, 0.05);
    color: var(--text-primary);
    box-shadow: none;
    transform: none;
}

.m-btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-full);
}

.m-btn-icon-sm {
    width: 32px;
    height: 32px;
}

.m-btn-icon-lg {
    width: 48px;
    height: 48px;
}

.m-payment-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-5);
}

.m-payment-option {
    padding: var(--spacing-4);
    background: rgba(250, 249, 248, 0.02);
    border: 2px solid var(--border-default);
    border-radius: var(--radius-md);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
}

.m-payment-option:hover {
    border-color: var(--accent);
    background: rgba(255, 191, 0, 0.06);
    transform: translateY(-2px);
}

.m-payment-option.selected {
    border-color: var(--primary);
    background: var(--primary-gradient);
    box-shadow: var(--shadow-primary);
}

.m-payment-option.selected .m-payment-option-name {
    color: var(--white);
}

.m-payment-option-icon {
    font-size: 28px;
    margin-bottom: var(--spacing-2);
}

.m-payment-option-name {
    font-size: var(--font-sm);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
    transition: color var(--transition-normal);
}

.m-amount-display {
    text-align: center;
    padding: var(--spacing-6);
    margin-bottom: var(--spacing-6);
    background: linear-gradient(135deg, rgba(245, 86, 74, 0.06) 0%, rgba(255, 191, 0, 0.04) 100%);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
}

.m-amount-label {
    font-size: var(--font-sm);
    color: var(--text-muted);
    margin-bottom: var(--spacing-2);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
}

.m-amount-value {
    font-size: var(--font-5xl);
    font-weight: var(--font-bold);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.m-amount-currency {
    font-size: var(--font-lg);
    color: var(--accent);
    margin-right: var(--spacing-1);
}

.m-fee-info {
    background: rgba(255, 191, 0, 0.04);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-6);
    border: 1px solid var(--border-subtle);
}

.m-fee-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-2) 0;
    font-size: var(--font-sm);
}

.m-fee-item:not(:last-child) {
    border-bottom: 1px solid var(--border-subtle);
}

.m-fee-label {
    color: var(--text-muted);
}

.m-fee-value {
    color: var(--text-primary);
    font-weight: var(--font-medium);
}

.m-fee-value.highlight {
    color: var(--accent);
    font-weight: var(--font-semibold);
    font-size: var(--font-base);
}

.m-result {
    min-height: 80px;
    padding: var(--spacing-4);
    background: rgba(250, 249, 248, 0.02);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    margin-top: var(--spacing-4);
}

.m-result-success {
    background: var(--success-bg);
    border-color: rgba(16, 185, 129, 0.25);
}

.m-result-error {
    background: var(--error-bg);
    border-color: rgba(239, 68, 68, 0.25);
}

.m-qr-container {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: var(--z-modal);
    padding: var(--spacing-6);
    cursor: pointer;
}

.m-qr-container.m-hidden {
    display: none;
}

.m-modal-content {
    position: relative;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-8);
    box-shadow: var(--shadow-lg);
    max-width: 400px;
    width: 100%;
    text-align: center;
    cursor: default;
}

.m-modal-close {
    position: absolute;
    top: var(--spacing-3);
    right: var(--spacing-3);
    background: transparent;
    border: none;
    font-size: 28px;
    color: var(--text-secondary);
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.m-modal-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.m-qr-title {
    font-size: var(--font-base);
    color: var(--text-accent);
    margin-bottom: var(--spacing-4);
}

.m-qr-image {
    max-width: 200px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-accent);
    margin-bottom: var(--spacing-4);
}

.m-qr-link {
    display: block;
    color: var(--alipay);
    font-size: var(--font-sm);
    word-break: break-all;
    margin-top: var(--spacing-2);
}

.m-modal {
    position: fixed;
    inset: 0;
    background: var(--bg-overlay);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.m-modal.active {
    opacity: 1;
    visibility: visible;
}

.m-modal-content {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    max-width: 400px;
    width: 90%;
    box-shadow: var(--shadow-glow);
    border: 1px solid var(--border-subtle);
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-normal);
}

.m-modal.active .m-modal-content {
    transform: scale(1) translateY(0);
}

.m-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-4);
}

.m-modal-title {
    font-size: var(--font-lg);
    font-weight: var(--font-semibold);
    color: var(--text-accent);
}

.m-modal-close {
    width: 32px;
    height: 32px;
    background: rgba(250, 249, 248, 0.05);
    border: none;
    border-radius: var(--radius-full);
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    font-size: var(--font-xl);
    line-height: 1;
}

.m-modal-close:hover {
    background: var(--primary);
    color: var(--white);
}

.m-modal-body {
    color: var(--text-secondary);
}

.m-toast {
    position: fixed;
    top: var(--spacing-6);
    left: 50%;
    transform: translateX(-50%) translateY(-100%);
    padding: var(--spacing-3) var(--spacing-6);
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-subtle);
    z-index: var(--z-toast);
    opacity: 0;
    transition: all var(--transition-normal);
}

.m-toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.m-toast-success {
    border-color: rgba(16, 185, 129, 0.3);
    background: var(--success-bg);
}

.m-toast-error {
    border-color: rgba(239, 68, 68, 0.3);
    background: var(--error-bg);
}

.m-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-8);
    gap: var(--spacing-4);
}

.m-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-default);
    border-top-color: var(--accent);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
}

.m-loading-text {
    color: var(--accent);
    font-size: var(--font-sm);
    animation: pulse 1.5s ease-in-out infinite;
}

.m-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-2);
    font-size: var(--font-xs);
    font-weight: var(--font-medium);
    border-radius: var(--radius-full);
    background: rgba(255, 191, 0, 0.1);
    color: var(--accent);
}

.m-badge-success {
    background: var(--success-bg);
    color: var(--success);
}

.m-badge-error {
    background: var(--error-bg);
    color: var(--error);
}

.m-badge-wechat {
    background: rgba(7, 193, 96, 0.1);
    color: var(--wechat);
}

.m-badge-alipay {
    background: rgba(22, 119, 255, 0.1);
    color: var(--alipay);
}

.m-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-default), transparent);
    margin: var(--spacing-6) 0;
}

.m-divider-text {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    color: var(--text-muted);
    font-size: var(--font-sm);
}

.m-divider-text::before,
.m-divider-text::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-default), transparent);
}

.m-empty {
    text-align: center;
    padding: var(--spacing-8);
    color: var(--text-muted);
}

.m-empty-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-4);
    opacity: 0.5;
}

.m-empty-text {
    font-size: var(--font-sm);
}

.m-link {
    color: var(--alipay);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.m-link:hover {
    color: var(--alipay-light);
    text-decoration: underline;
}

.m-link-accent {
    color: var(--accent);
}

.m-link-accent:hover {
    color: var(--accent-light);
}

.m-footer {
    text-align: center;
    padding: var(--spacing-6);
    color: var(--text-muted);
    font-size: var(--font-xs);
}

.m-footer a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.m-footer a:hover {
    color: var(--accent);
}

.m-animate-fade-in {
    animation: fadeIn 0.3s ease forwards;
}

.m-animate-slide-in {
    animation: slideIn 0.3s ease forwards;
}

.m-animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

.m-animate-bounce {
    animation: bounce 1s ease infinite;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-10px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.m-page {
    display: none;
    animation: fadeIn 0.3s ease;
}

.m-page.active {
    display: block;
}

.m-bg-gradient {
    background: var(--bg-base);
    min-height: 100vh;
}

.m-main {
    position: relative;
}

.m-section {
    margin-bottom: var(--spacing-4);
}

.m-payment-card {
    text-align: center;
    padding: var(--spacing-8);
}

.m-payment-amount {
    margin-bottom: var(--spacing-2);
}

.m-payment-currency {
    font-size: var(--font-xl);
    color: var(--accent);
    font-weight: var(--font-semibold);
}

.m-payment-value {
    font-size: var(--font-5xl);
    font-weight: var(--font-bold);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.m-payment-desc {
    font-size: var(--font-sm);
    color: var(--text-muted);
}

.m-info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-3) 0;
    border-bottom: 1px solid var(--border-subtle);
}

.m-info-row:last-child {
    border-bottom: none;
}

.m-info-label {
    color: var(--text-muted);
    font-size: var(--font-sm);
}

.m-info-value {
    color: var(--text-primary);
    font-size: var(--font-sm);
    font-weight: var(--font-medium);
}

.m-tips-card {
    background: rgba(255, 191, 0, 0.04);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
    border: 1px solid var(--border-subtle);
}

.m-tips-text {
    font-size: var(--font-sm);
    color: var(--text-muted);
    text-align: center;
    margin: var(--spacing-1) 0;
}

.m-status-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: var(--spacing-2);
}

.m-status-pending {
    background: var(--accent);
    animation: pulse 1.5s ease-in-out infinite;
}

.m-status-success {
    background: var(--success);
}

.m-status-failed {
    background: var(--error);
}

.m-qr-card {
    text-align: center;
    padding: var(--spacing-6);
}

.m-qr-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-4);
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-4);
}

.m-qr-tip {
    font-size: var(--font-sm);
    color: var(--text-secondary);
}

.m-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.hidden {
    display: none !important;
}

.m-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.m-focus-ring:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 191, 0, 0.3);
}

.m-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.m-line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.m-line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.m-red-packet-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    box-shadow: var(--shadow-primary);
    position: relative;
}

.m-red-packet-icon::before {
    content: '福';
    font-size: 32px;
    font-weight: bold;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 2s ease-in-out infinite;
}

@keyframes shimmer {
    0% { filter: brightness(1); }
    50% { filter: brightness(1.2); }
    100% { filter: brightness(1); }
}

@media (max-width: 480px) {
    .m-container {
        padding: var(--spacing-4);
    }
    
    .m-nav {
        flex-wrap: wrap;
    }
    
    .m-nav-item {
        flex: 1 1 45%;
        font-size: var(--font-xs);
        padding: var(--spacing-2) var(--spacing-3);
    }
    
    .m-card {
        padding: var(--spacing-4);
    }
    
    .m-amount-value {
        font-size: var(--font-4xl);
    }
    
    .m-payment-value {
        font-size: var(--font-4xl);
    }
    
    .m-payment-options {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .m-form-row {
        grid-template-columns: 1fr;
    }
    
    .m-btn-lg {
        padding: var(--spacing-3) var(--spacing-6);
        font-size: var(--font-base);
    }
}

@media (min-width: 640px) {
    .sm\:m-flex { display: flex; }
    .sm\:m-hidden { display: none; }
    .sm\:m-block { display: block; }
    .sm\:m-grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .sm\:m-grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 768px) {
    .md\:m-flex { display: flex; }
    .md\:m-hidden { display: none; }
    .md\:m-block { display: block; }
    .md\:m-grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .md\:m-grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .md\:m-container-lg { max-width: 768px; }
}

@media print {
    body {
        background: white;
        color: black;
    }
    
    .m-card {
        box-shadow: none;
        border: 1px solid #ccc;
    }
    
    .m-btn,
    .m-nav {
        display: none !important;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ==================== 红包雨动画 Red Packet Rain ==================== */
.red-packet-rain {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.red-packet-item {
    position: absolute;
    top: 0;
    font-size: 30px; /* 基础大小，可通过内联样式覆盖 */
    opacity: 0; /* 初始不可见，由动画接管 */
    user-select: none;
    filter: drop-shadow(0 2px 5px rgba(0,0,0,0.3));
    /* 关键：动画名 持续时间 缓动函数 循环 */
    animation: float-fall linear infinite;
}

/* 
   飘逸下落动画定义 
   translateY: 控制垂直下落 (0 -> 屏幕外)
   translateX: 控制左右摇摆
   rotate: 控制旋转
*/
@keyframes float-fall {
    0% {
        transform: translateY(-10vh) translateX(0) rotate(0deg);
        opacity: 0; /* 刚开始出现时透明 */
    }
    10% {
        opacity: 1; /* 很快显现 */
    }
    25% {
        transform: translateY(25vh) translateX(15px) rotate(90deg);
    }
    50% {
        transform: translateY(50vh) translateX(-15px) rotate(180deg);
    }
    75% {
        transform: translateY(75vh) translateX(15px) rotate(270deg);
    }
    90% {
        opacity: 1; /* 快结束时开始消失 */
    }
    100% {
        transform: translateY(110vh) translateX(0) rotate(360deg);
        opacity: 0; /* 彻底消失 */
    }
}