:root {
    --ts-accent: var(--accent);
    --ts-bg: var(--bg);
    --ts-fg: var(--fg);
    --ts-muted: var(--muted);
    --ts-card-bg: var(--glass2);
    --ts-border: var(--line);
    --ts-danger: #ff4d7d;
}
[data-theme="light"] {
    --ts-accent: #007aff;
    --ts-bg: #f8fafc;
    --ts-fg: #1e293b;
    --ts-muted: #64748b;
    --ts-card-bg: #ffffff;
    --ts-border: #e2e8f0;
    --ts-danger: #ef4444;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--ts-bg);
    color: var(--ts-fg);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--t-base), color var(--t-base);
}
.white-flash-shield {
    position: fixed;
    inset: 0;
    background: var(--ts-bg);
    z-index: 1000;
    pointer-events: none;
    animation: fadeOutShield 0.3s forwards;
}
@keyframes fadeOutShield {
    to { opacity: 0; visibility: hidden; }
}
.ts-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background: var(--bg);
}
.topbar {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    padding: 0 16px;
    height: 60px;
    background: var(--glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 0.5px solid var(--ts-border);
    transition: background-color var(--t-base), border-color var(--t-base);
}
.back-btn {
    background: none;
    border: none;
    color: var(--ts-accent);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    margin-right: -8px;
    transition: transform var(--t-snap), color var(--t-base);
}
.back-btn:active {
    transform: scale(0.9);
}
.topbar-title {
    flex: 1;
    text-align: center;
    font-size: 17px;
    font-weight: 700;
    margin-left: 32px;
}
.ts-content {
    padding: 24px 20px;
    max-width: 500px;
    margin: 0 auto;
    width: 100%;
}
.ts-hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-bottom: 40px;
}
.ts-shield-container {
    position: relative;
    width: 100px;
    height: 100px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--t-base);
}
.ts-shield-glow {
    position: absolute;
    inset: -10px;
    background: var(--ts-accent);
    border-radius: 40%;
    opacity: 0.15;
    filter: blur(20px);
    transform: rotate(45deg);
    animation: tsPulse 3s infinite alternate;
    transition: background-color var(--t-base), opacity var(--t-base);
}
.ts-shield-icon {
    position: relative;
    z-index: 2;
    color: var(--ts-accent);
    transition: color var(--t-base);
}
.ts-shield-icon svg {
    width: 64px;
    height: 64px;
    filter: drop-shadow(0 8px 16px rgba(0,0,0,0.1));
}
@keyframes tsPulse {
    from { transform: rotate(45deg) scale(0.9); opacity: 0.1; }
    to { transform: rotate(45deg) scale(1.1); opacity: 0.2; }
}
.ts-status-badge {
    padding: 6px 16px;
    background: var(--glass3);
    color: var(--ts-danger);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 16px;
    border: 1px solid var(--line);
    transition: background-color var(--t-base), color var(--t-base), border-color var(--t-base);
}
.ts-hero-title {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
    transition: color var(--t-base);
}
.ts-hero-desc {
    font-size: 15px;
    color: var(--ts-muted);
    max-width: 340px;
    line-height: 1.6;
    transition: color var(--t-base);
}
.ts-info-group {
    background: var(--ts-card-bg);
    border-radius: var(--radius3);
    padding: 8px;
    margin-bottom: 32px;
    border: 1px solid var(--ts-border);
    box-shadow: var(--shadow-sm);
    transition: background-color var(--t-base), border-color var(--t-base), box-shadow var(--t-base);
}
.ts-info-item {
    display: flex;
    gap: 16px;
    padding: 16px;
    transition: background-color var(--t-base);
}
.ts-info-icon {
    width: 48px;
    height: 48px;
    color: var(--ts-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: color var(--t-base);
}

.ts-info-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 2px;
    transition: color var(--t-base);
}
.ts-info-title {
    font-weight: 700;
    font-size: 16px;
    transition: color var(--t-base);
}
.ts-info-sub {
    font-size: 13px;
    color: var(--ts-muted);
    line-height: 1.5;
    transition: color var(--t-base);
}
.ts-btn-primary {
    width: 100%;
    padding: 18px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--out1), var(--out2));
    color: #ffffff;
    border: none;
    font-size: 16px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    cursor: pointer;
    box-shadow: 0 8px 20px rgba(0, 122, 255, 0.25);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), background-color var(--t-base), box-shadow 0.3s ease;
}

.ts-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(0, 122, 255, 0.35);
}

.ts-btn-primary:active {
    transform: scale(0.95);
    box-shadow: 0 4px 10px rgba(0, 122, 255, 0.2);
}

.ts-btn-secondary {
    width: 100%;
    padding: 16px;
    background: rgba(220, 53, 69, 0.05);
    color: #dc3545;
    border: 1px solid rgba(220, 53, 69, 0.2);
    border-radius: 16px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.ts-btn-secondary:hover {
    background: rgba(220, 53, 69, 0.1);
    border-color: rgba(220, 53, 69, 0.4);
    transform: translateY(-1px);
}

.ts-animate {
    opacity: 0;
    transform: translateY(25px) scale(0.98);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.ts-visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.ts-step {
    animation: stepFadeIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes stepFadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.ts-step-title {
    font-size: 26px;
    font-weight: 800;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}
.ts-step-desc {
    font-size: 15px;
    color: var(--ts-muted);
    margin-bottom: 24px;
    line-height: 1.6;
}
.ts-qr-image {
    margin: 20px auto;
    border-radius: 16px;
    width: 220px;
    height: 220px;
    background: #fff;
    padding: 12px;
    border: 1px solid var(--ts-border);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}
.ts-secret-code-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--ts-card-bg);
    border: 1px solid var(--ts-border);
    border-radius: 16px;
    padding: 6px 6px 6px 16px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    transition: border-color 0.3s;
}
.ts-secret-code-wrapper:hover {
    border-color: var(--ts-accent);
}
.ts-secret-code {
    user-select: all;
    font-family: 'Courier New', Courier, monospace;
    font-size: 18px;
    letter-spacing: 3px;
    color: var(--ts-accent);
    font-weight: 700;
    margin: 0;
}
.ts-copy-btn {
    background: var(--ts-bg);
    border: 1px solid var(--ts-border);
    border-radius: 12px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--ts-muted);
    transition: all 0.2s;
}
.ts-copy-btn:hover {
    background: var(--ts-accent);
    color: #fff;
    border-color: var(--ts-accent);
}
.ts-input {
    width: 100%;
    padding: 20px;
    border-radius: 16px;
    border: 2px solid var(--ts-border);
    background: var(--ts-card-bg);
    color: var(--ts-fg);
    font-size: 24px;
    text-align: center;
    letter-spacing: 8px;
    font-family: 'Courier New', Courier, monospace;
    font-weight: 700;
    transition: all 0.3s;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}
.ts-input:focus {
    outline: none;
    border-color: var(--ts-accent);
    box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.15);
    background: var(--bg);
}
.ts-error-msg {
    color: var(--ts-danger);
    margin-top: 16px;
    font-size: 14px;
    font-weight: 600;
    background: rgba(255, 77, 125, 0.1);
    padding: 10px 16px;
    border-radius: 10px;
}
.ts-backup-wrapper {
    position: relative;
    background: var(--ts-card-bg);
    border-radius: 16px;
    padding: 24px;
    border: 1px solid var(--ts-border);
    margin-top: 20px;
    box-shadow: var(--shadow-sm);
}
.ts-backup-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    text-align: center;
    font-family: 'Courier New', Courier, monospace;
    font-size: 17px;
    letter-spacing: 2px;
    font-weight: 600;
    margin-top: 16px;
}
.ts-backup-container span {
    background: var(--ts-bg);
    padding: 12px;
    border-radius: 10px;
    border: 1px solid var(--ts-border);
    color: var(--ts-fg);
    transition: transform 0.2s, box-shadow 0.2s;
}
.ts-backup-container span:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-sm);
    border-color: var(--ts-accent);
    color: var(--ts-accent);
}