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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: #333;
    line-height: 1.6;
    background: #f8f9fa;
}

html {
    scroll-behavior: smooth;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 19px 38px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.header-content {
    max-width: 1330px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-left {
    font-size: 23px;
    font-weight: 700;
    background: linear-gradient(90deg, #a855f7 0%, #6366f1 50%, #0ea5e9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    text-decoration: none;
    color: #666;
    font-weight: 500;
    transition: color 0.3s ease;
    cursor: pointer;
}

.nav-link:hover {
    color: #2563eb;
}

.nav-link.active {
    color: #2563eb;
}

.hero {
    min-height: 95vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1264px;
    margin: 0 auto;
    padding: 100px 36px 0;
    gap: 72px;
}

.hero-left {
    flex: 1;
    text-align: center;
}

.hero-left h1 {
    font-size: 76px;
    margin-bottom: 22px;
    font-weight: 700;
    background: linear-gradient(90deg, #a855f7 0%, #6366f1 50%, #0ea5e9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    white-space: nowrap;
}

.hero-left p {
    font-size: 22px;
    color: #666;
    margin-bottom: 32px;
    line-height: 1.5;
    max-width: 542px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    background: #2563eb;
    color: white;
    padding: 18px 36px;
    border-radius: 8px;
    text-decoration: none;
    display: inline-block;
    font-size: 18px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
}

.cta-button:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
}

.hero-right {
    flex: 1;
}

.browser-mockup {
    background: white;
    border-radius: 10px;
    box-shadow: 0 22px 66px rgba(0,0,0,0.12); 
    overflow: hidden;
    height: 550px;
    width: 100%;
    max-width: 600px;
    position: relative;
}

.browser-header {
    background: #f6f7f9;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid #e5e7eb;
}

.browser-dots {
    display: flex;
    gap: 8px;
}

.browser-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #9ca3af;
}

.browser-dot:first-child { background: #ef4444; }
.browser-dot:nth-child(2) { background: #f59e0b; }
.browser-dot:nth-child(3) { background: #22c55e; }

.browser-url-bar {
    flex: 1;
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    padding: 8px 12px;
    font-size: 14px;
    color: #6b7280;
    display: flex;
    align-items: center;
    gap: 8px;
}

.lock-icon {
    width: 14px;
    height: 14px;
    fill: #6b7280;
}

.browser-extensions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.extension-icon-header {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
    font-weight: bold;
}

.browser-content {
    padding: 24px;
    padding-bottom: 64px;
    min-height: 400px;
    position: relative;
    background: #ffffff;
    height: calc(100% - 44px);
    display: flex;
    flex-direction: column;
}

.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.user-message {
    background: #f3f4f6;
    color: #1f2937;
    padding: 12px 20px;
    border-radius: 20px 20px 4px 20px;
    margin-bottom: 20px;
    max-width: 80%;
    margin-left: auto;
    font-size: 15px;
}

.ai-message {
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    padding: 20px;
    border-radius: 4px 20px 20px 20px;
    font-size: 15px;
    line-height: 1.6;
    color: #374151;
    position: relative;
    margin-bottom: 220px;
}

.chat-input-container {
    position: absolute;
    bottom: 40px;
    left: 20px;
    right: 80px;
    background: #f3f4f6;
    border-radius: 24px;
    padding: 14px 20px;
    display: flex;
    align-items: center;
}

.chat-input-placeholder {
    color: #9ca3af;
    font-size: 14px;
}

.aftercheck-toggle {
    position: absolute;
    bottom: 40px;
    right: 20px;
    width: 44px;
    height: 44px;
    background: linear-gradient(45deg, #a855f7 0%, #6366f1 50%, #0ea5e9 100%); 
    box-shadow: 0 4px 12px rgba(168, 85, 247, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.aftercheck-toggle.checking {
    animation: none;
    background: linear-gradient(45deg, #a855f7 0%, #6366f1 50%, #0ea5e9 100%);
    box-shadow: 0 4px 12px rgba(168, 85, 247, 0.3);

}

.aftercheck-toggle.error {
    background: #dc2626;
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.3);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid #ffffff;
    border-top: 2px solid transparent;
    border-radius: 50%;
    display: none;
    animation: spin 1s linear infinite;
}

.aftercheck-toggle.checking .search-icon {
    display: none;
}

.aftercheck-toggle.checking .spinner {
    display: block;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.exclamation-mark {
    color: white;
    font-size: 24px;
    font-weight: 700;
    display: none;
}

.aftercheck-toggle.error .search-icon,
.aftercheck-toggle.error .spinner {
    display: none;
}

.aftercheck-toggle.error .exclamation-mark {
    display: block;
}

.hero-highlight {
    position: relative;
    display: inline-block;
    padding: 2px 4px;
    margin: -2px -4px;
    z-index: 1;
}

.hero-highlight::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    background: rgba(239, 68, 68, 0.3);
    width: 0;
    border-radius: 3px;
    pointer-events: none;
    z-index: -1;
}

.hero-highlight.animating::before {
    animation: typewriter 1s ease-out forwards;
}

.highlight {
    position: relative;
    display: inline-block;
    padding: 2px 4px;
    margin: -2px -4px;
    z-index: 1;
}

.highlight::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    background: rgba(239, 68, 68, 0.3);
    width: 0;
    border-radius: 3px;
    pointer-events: none;
    z-index: -1;
}

.highlight.animating::before {
    animation: typewriter 1s ease-out forwards;
}

@keyframes typewriter {
    0% { width: 0; }
    100% { width: 100%; }
}

.claim-popup {
    position: absolute;
    top: 100px;
    left: 50%;
    transform: translateX(-50%);
    background: white;
    padding: 16px;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    border: 1px solid #e5e7eb;
    width: 300px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.5s ease;
    z-index: 1000;
    text-align: left;
}

.claim-popup.show {
    opacity: 1;
    visibility: visible;
}

.claim-popup::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 8px solid #e5e7eb;
}

.claim-popup::after {
    content: '';
    position: absolute;
    top: -7px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 8px solid white;
}

.popup-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid #e5e7eb;
}

.popup-confidence {
    font-size: 11px;
    font-weight: 600;
    color: #374151;
    margin-left: auto;
}

.popup-status {
    background: #ef4444;
    color: white;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.popup-section {
    margin-bottom: 10px;
    text-align: left;
}

.popup-label {
    font-weight: 600;
    font-size: 10px;
    color: #6b7280;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.popup-claim {
    font-style: italic;
    color: #f59e0b;
    font-size: 12px;
    line-height: 1.4;
    text-align: left;
}

.popup-correction {
    font-style: italic;
    color: #10b981;
    font-size: 12px;
    line-height: 1.4;
    text-align: left;
}

.popup-evidence {
    color: #4b5563;
    font-size: 12px;
    line-height: 1.4;
    text-align: left;
}

.how-it-works {
    background: #f5f5f5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    overflow: hidden;
    position: relative;
    padding: 100px 0 66px;
    scroll-margin-top: 80px;
}

.how-it-works-container {
    width: 100%;
    max-width: 1764px;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    min-height: calc(100vh - 166px);
}

.how-it-works h2 {
    font-size: 42px;
    text-align: center;
    margin-bottom: clamp(10px, 2vh, 20px);
    color: #1a1a1a;
    z-index: 20;
    position: relative;
    margin-top: 0;
}

.animation-container {
    width: 100%;
    max-width: 1499px;
    height: clamp(400px, 50vh, 66vh);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: scale(0.93);
    transform-origin: center center;
    margin: auto 0;
}

.browser-container {
    position: absolute;
    width: 600px;
    background: white;
    border-radius: 14px;
    box-shadow: 0 22px 66px rgba(0,0,0,0.12);
    overflow: hidden;
    opacity: 0;
    animation: browserAppear 0.5s 0.5s forwards;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 10;
}

.browser-container.move-left {
    left: 30%;
}

.browser-container.move-center {
    left: 50%;
}

.browser-header-animation {
    background: #ffffff;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid #e5e7eb;
}

.browser-dots-animation {
    display: flex;
    gap: 7px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ff5f57; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #28ca42; }

.url-bar {
    flex: 1;
    background: #f3f4f6;
    border-radius: 7px;
    padding: 7px 12px;
    display: flex;
    align-items: center;
    gap: 7px;
    color: #6b7280;
    font-size: 14px;
}

.verified-badge {
    width: 20px;
    height: 20px;
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 16px;
    font-weight: bold;
}

.verified-badge-icon {
    width: 20px;
    height: 20px;
    display: block;
}

.chat-container-animation {
    padding: 29px;
    background: #ffffff;
    min-height: 375px;
    position: relative;
}

.user-message-animation {
    background: #e5e7eb;
    color: #1f2937;
    padding: 16px 19px;
    border-radius: 19px 19px 3px 19px;
    margin-bottom: 22px;
    font-size: 15px;
    max-width: 85%;
    margin-left: auto;
    opacity: 0;
    animation: messageAppear 0.5s 1s forwards;
}

.llm-response-animation {
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    padding: 19px;
    border-radius: 3px 19px 19px 19px;
    line-height: 1.7;
    color: #374151;
    font-size: 15px;
    opacity: 0;
    animation: messageAppear 0.5s 1.2s forwards;
    position: relative;
    max-width: 95%;
}

.llm-response-animation span {
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
    border-radius: 3px;
    padding: 2px 0;
}

.highlight {
    background: rgba(255, 235, 59, 0.4);
    padding: 2px 4px;
    animation: highlightPulse 0.6s ease;
}

.error-highlight {
    background: rgba(239, 68, 68, 0.2);
    color: #dc2626;
    padding: 2px 4px;
    animation: errorPulse 0.6s ease;
}

.aftercheck-toggle-section2 {
    position: absolute;
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: linear-gradient(45deg, #a855f7 0%, #6366f1 50%, #0ea5e9 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(168, 85, 247, 0.3);
}

.aftercheck-toggle-section2::before {
    display: none;
}

.aftercheck-toggle-section2 .spinner {
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid #ffffff;
    border-top: 2px solid transparent;
    border-radius: 50%;
    opacity: 0;
    display: block;
    animation: section2SpinnerIcon 16s ease-in-out infinite;
}

.aftercheck-toggle-section2 .exclamation-mark {
    position: absolute;
    color: white;
    font-weight: 700;
    font-size: 20px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segui UI', Roboto, sans-serif;
    opacity: 1; 
    display: block;
    animation: section2ShowExclamation 16s ease-in-out infinite;
}

@keyframes section2ToggleTransition {
    0%, 77.7% { 
        background: linear-gradient(45deg, #a855f7 0%, #6366f1 50%, #0ea5e9 100%); 
        box-shadow: 0 4px 12px rgba(168, 85, 247, 0.3); 
    }
    77.8%, 100% { 
        background: #dc2626; 
        box-shadow: 0 4px 14px rgba(220, 38, 38, 0.4); 
    }
}

@keyframes section2SpinnerIcon {
    0%, 11.1% { opacity: 1; transform: rotate(0deg); }
    11.2% { opacity: 1; transform: rotate(0deg); }
    77.7% { opacity: 1; transform: rotate(4320deg); }
    77.8%, 100% { opacity: 0; transform: rotate(4320deg); }
}

@keyframes section2ShowExclamation {
    0%, 77.7% { opacity: 0; }
    77.8%, 100% { opacity: 1; }
}

.input-container {
    position: absolute;
    bottom: 16px;
    left: 16px;
    right: 83px;
    background: #f3f4f6;
    border-radius: 22px;
    padding: 12px 19px;
    display: flex;
    align-items: center;
    opacity: 0;
    animation: fadeIn 0.5s 1.3s forwards;
}

.input-text {
    color: #9ca3af;
    font-size: 14px;
}

.claim-box {
    position: absolute;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 22px rgba(0,0,0,0.1);
    padding: 16px 19px;
    opacity: 0;
    transform: scale(0.8) translateY(10px);
    transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    min-width: 263px;
    z-index: 15;
}

.claim-box.show {
    opacity: 1;
    transform: scale(1) translateY(0);
}

.claim-box.hide {
    opacity: 0;
    transform: scale(0.9) translateX(50px);
}

.claim-box:nth-child(1) { top: 120px; left: 80px; } 
.claim-box:nth-child(2) { top: 120px; right: 80px; } 
.claim-box:nth-child(3) { bottom: 140px; left: 80px; } 
.claim-box:nth-child(4) { bottom: 140px; right: 80px; } 

.claim-label {
    font-size: 12px;
    color: #6b7280;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.claim-text {
    font-size: 15px;
    color: #374151;
    font-weight: 500;
    line-height: 1.4;
}

.claims-stack {
    position: absolute;
    right: 15%;
    top: 50%;
    transform: translate(0, -50%);
    display: flex;
    flex-direction: column;
    gap: 16px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
    z-index:20;
}

.claims-stack.show {
    opacity: 1;
}

.claim-card {
    background: white;
    padding: 19px 22px;
    border-radius: 12px;
    box-shadow: 0 4px 22px rgba(0,0,0,0.08);
    font-size: 15px;
    color: #374151;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-width: 337px;
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.5s ease;
    position: relative;
    z-index: 21;
}

.claim-card.show {
    opacity: 1;
    transform: translateX(0);
}

.claim-card.hide {
    opacity: 0;
    transform: translateX(100px);
}

.claim-card-text {
    flex: 1;
    padding-right: 19px;
    font-weight: 500;
}

.verdict {
    padding: 5px 16px;
    border-radius: 5px;
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.4s ease;
}

.verdict.show {
    opacity: 1;
    transform: scale(1);
}

.verdict.true {
    background: #10b981;
    color: white;
}

.verdict.false {
    background: #ef4444;
    color: white;
}

.progress-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    width: 0;
    transition: width 0.3s ease;
    z-index: 20;
}

.caption-container {
    display: none;
}

.caption-text {
    display: none;
}

.step-number {
    font-weight: 700;
    color: #1f2937;
}

@keyframes fadeIn {
    to { opacity: 1; }
}

@keyframes browserAppear {
    to { opacity: 1; }
}

@keyframes messageAppear {
    to { opacity: 1; }
}

@keyframes highlightPulse {
    0% { background: rgba(255, 235, 59, 0); }
    50% { background: rgba(255, 235, 59, 0.6); }
    100% { background: rgba(255, 235, 59, 0.4); }
}

@keyframes errorPulse {
    0% { background: rgba(239, 68, 68, 0); }
    50% { background: rgba(239, 68, 68, 0.3); }
    100% { background: rgba(239, 68, 68, 0.2); }
}

.instructions {
    background: #ffffff;
    min-height: 95vh;
    display: flex;
    align-items: center;
    padding: 76px 0;
    scroll-margin-top: 80px;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 36px;
    width: 100%;
}

.instructions h2 {
    font-size: 42px;
    text-align: center;
    margin-bottom: 48px;
    color: #1a1a1a;
}

.steps {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
    padding: 0 20px;
    justify-items: center;
    align-items: stretch;
    justify-content: center;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    background: #fdfdfe;
    padding: 43px 38px;
    border-radius: 11px;
    border: 1px solid #f1f3f4;
    transition: transform 0.3s ease, background 0.3s ease;
    position: relative;
    overflow: visible;
    width: 100%;
    max-width: 333px;
    justify-self: center;
    height: 100%;
}

.step:hover {
    transform: translateY(-8px);
    box-shadow: 0 19px 38px rgba(0, 0, 0, 0.1);
    background: #f8f9fa;
    border-color: #e9ecef;
}

.step-number {
    background: #2563eb;
    color: white;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 21px;
    flex-shrink: 0;
    margin-bottom: 24px;
}

.step-content {
    margin-bottom: 33px;
    width: 100%;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.step-content h3 {
    font-size: 23px;
    margin-bottom: 14px;
    color: #1a1a1a;
    text-align: center;
}

.step-content p {
    color: #666;
    font-size: 15px;
    line-height: 1.5;
    text-align: center;
    max-width: 266px;
    margin: 0 auto;
}

.step-animation {
    position: relative;
    width: 247px;
    height: 209px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: auto;
}

.extension-animation {
    background: white;
    border-radius: 11px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    width: 100%;
    height: 100%;
    overflow: visible;
    position: relative;
}

.chrome-browser {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.chrome-header {
    background: #f3f4f6;
    padding: 14px 17px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid #e5e7eb;
    border-radius: 11px 11px 0 0;
}

.chrome-dots {
    display: flex;
    gap: 8px;
}

.chrome-dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: #9ca3af;
}

.chrome-dot:first-child { background: #ef4444; }
.chrome-dot:nth-child(2) { background: #f59e0b; }
.chrome-dot:nth-child(3) { background: #22c55e; }

.extension-area {
    display: flex;
    gap: 11px;
    align-items: center;
    position: relative;
}

.extension-slot {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    cursor: pointer;
}

.aftercheck-icon {
    width: 21px;
    height: 21px;
    display: block;
}

.extension-popup {
    position: absolute;
    top: 52px;
    right: 0;
    width: 190px;
    background: white;
    border-radius: 11px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    padding: 17px;
    opacity: 1;
    transform: scale(1) translateY(0);
    transform-origin: top right;
    z-index: 10;
}

.popup-icon {
    width: 17px;
    height: 17px;
    display: block;
}

.popup-title {
    font-size: 14px;
    font-weight: 600;
    color: #374151;
}

.popup-content {
    color: #6b7280;
    font-size: 12px;
    line-height: 1.4;
    display: block;
}

.chrome-content {
    flex: 1;
    background: #f9fafb;
    padding: 24px;
    border-radius: 0 0 11px 11px;
}

.logo-link {
    color: inherit;
    text-decoration: none;
}

.login-animation {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    padding: 19px;
    width: 190px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
    margin: 0 auto;
}

.login-label {
    font-size: 11px;
    color: #666;
    margin-bottom: 6px;
}

.login-field {
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    height: 24px;
    border-radius: 6px;
    margin-bottom: 14px;
    padding: 0 10px;
    font-size: 13px;
    line-height: 24px;
    overflow: hidden;
    white-space: nowrap;
}

.email-text {
    display: inline-block;
    width: 100%;
}

.password-text {
    display: inline-block;
    width: 48px;
}

.login-button {
    background: #2563eb;
    color: white;
    height: 30px;
    border-radius: 6px;
    margin-top: 10px;
    font-size: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
}

.highlight-animation {
    background: white;
    border-radius: 11px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    width: 247px;
    height: 190px;
    margin: 0 auto;
    position: relative;
}

.browser-preview-header {
    background: #f6f7f9;
    padding: 11px 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid #e5e7eb;
}

.browser-preview-dots {
    display: flex;
    gap: 5px;
    flex-shrink: 0;
}

.browser-preview-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #9ca3af;
}

.browser-preview-dot:first-child { background: #ef4444; }
.browser-preview-dot:nth-child(2) { background: #f59e0b; }
.browser-preview-dot:nth-child(3) { background: #22c55e; }

.browser-preview-url {
    flex: 1;
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 4px;
    padding: 4px 8px;
    font-size: 10px;
    color: #6b7280;
    margin-left: 5px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.browser-preview-lock {
    width: 8px;
    height: 8px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%236b7280' viewBox='0 0 24 24'%3E%3Cpath d='M18 8h-1V6c0-2.76-2.24-5-5-5S7 3.24 7 6v2H6c-1.1 0-2 .9-2 2v10c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V10c0-1.1-.9-2-2-2zM9 6c0-1.66 1.34-3 3-3s3 1.34 3 3v2H9V6z'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    flex-shrink: 0;
}

.browser-preview-url-text {
    font-size: 10px;
    color: #6b7280;
}

.browser-preview-extensions {
    display: flex;
    align-items: center;
    gap: 5px;
    flex-shrink: 0;
}

.mini-extension-icon {
    width: 11px;
    height: 11px;
    display: block;
}

.highlight-content {
    padding: 14px;
    font-size: 11px;
    line-height: 1.6;
    color: #374151;
    background: #ffffff;
    height: calc(100% - 43px);
    overflow: hidden;
}

.text-highlight {
    background: rgba(239, 68, 68, 0.2);
    padding: 3px 5px;
    border-radius: 4px;
    position: relative;
}

.fact-popup {
    position: absolute;
    top: -33px;
    left: 50%;
    transform: translateX(-50%);
    background: #ef4444;
    color: white;
    padding: 8px 10px;
    border-radius: 5px;
    font-size: 10px;
    font-weight: 600;
    white-space: nowrap;
    opacity: 1;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
    border: 1px solid #dc2626;
    z-index: 10;
}

.fact-popup::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid #ef4444;
}

footer {
    text-align: center;
    padding: 36px;
    color: #666;
    background: white;
    border-top: 1px solid #e5e7eb;
}

footer a {
    color: #666;
    text-decoration: none;
    transition: color 0.3s ease;
}

footer a:hover {
    color: #2563eb;
}

.section2-tooltip {
    position: absolute;
    bottom: 70px;
    right: 19px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 22px;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.4s ease;
    z-index: 150;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    white-space: normal;
    max-width: 360px;
}

.section2-tooltip.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.section2-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    right: 25px;
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid #764ba2;
}

.section2-tooltip .tooltip-step {
    font-weight: 700;
    font-size: 18px;
    margin-bottom: 2px;
    opacity: 0.9;
}

.section2-tooltip .tooltip-text {
    font-size: 18px;
    font-weight: 500;
    line-height: 1.3;
}

.contact {
    background: rgb(243, 243, 243);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 120px 0 80px;
    scroll-margin-top: 80px;
}

.contact-container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 36px;
    width: 100%;
}

.contact h2 {
    font-size: 42px;
    text-align: center;
    margin-bottom: 48px;
    color: #1a1a1a;
}

.contact-content {
    display: flex;
    align-items: center;
    justify-content: center; 
    gap: clamp(60px, 10vw, 100px); 
    min-height: 400px;
    max-width: 1200px;
    width: 100%;
}

.contact-left {
    flex: 1;
    max-width: 500px;
    text-align: left; 
    padding-right: 20px;
}

.contact h2 {
    font-size: 42px;
    text-align: left;
    margin-bottom: 48px;
    color: #1a1a1a;
}

.contact-left h2 {
    font-size: 42px;
    text-align: left;
    margin-bottom: 24px;
    color: #1a1a1a;
}

.contact-left h3 {
    font-size: clamp(28px, 4vw, 42px);
    margin-bottom: clamp(24px, 4vw, 32px);
    color: #1a1a1a;
    font-weight: 700;
    text-align: left;
}

.contact-left h4 {
    font-size: clamp(20px, 2.8vw, 24px);
    margin-bottom: clamp(16px, 3vw, 20px);
    color: #333;
    font-weight: 700;
    line-height: 1.4;
}

.contact-left p {
    font-size: clamp(18px, 2.5vw, 22px);
    margin-bottom: clamp(24px, 4vw, 32px);
    color: #666;
    font-weight: 400;
    line-height: 1.5;
    text-align: left;
}

.contact-email {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 12px;
}

.email-icon {
    width: 20px;
    height: 20px;
    color: #666;
    flex-shrink: 0;
}

.contact-email a {
    color: #2563eb;
    text-decoration: none;
    font-size: clamp(16px, 2vw, 18px);
    font-weight: 500;
    transition: color 0.3s ease;
}

.contact-email a:hover {
    color: #1d4ed8;
    text-decoration: underline;
}

.contact-right {
    flex: 1;
    display: flex;
    justify-content: center; 
    align-items: center;
    max-width: 600px;
    padding-left: 20px; 
}

.contact-image {
    width: 100%;
    height: auto;
    max-width: 575px;
    object-fit: contain;
    transform: scale(1.2);
}

.paypal-donation {
    margin-top: 20px;
}

.paypal-button {
    display: inline-block;
    transition: transform 0.2s ease;
}

.paypal-button:hover {
    transform: translateY(-2px);
}

.paypal-logo {
    height: 50px;
    width: auto;
}

@media (max-width: 768px) {
    header {
        padding: 12px 18px;
    }
    
    .header-content {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 0;
        max-width: 100%;
    }
    
    .header-left {
        font-size: 14px;
        font-weight: 700;
        white-space: nowrap;
        flex-shrink: 0;
    }
    
    .header-nav-container {
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }
    
    .header-nav-container::-webkit-scrollbar {
        display: none;
    }
    
    .header-nav {
        display: flex;
        min-width: max-content;
        gap: 16px;
        padding: 0 4px;
    }
    
    .nav-link {
        white-space: nowrap;
        flex-shrink: 0;
        font-size: 14px;
        padding: 8px 12px;
        font-weight: 500;
    }
   
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 120px 18px 36px;
    }
    
    .hero-left h1 {
        font-size: 36px;
    }
    
    .how-it-works {
        padding: 120px 12px 44px;
        scroll-margin-top: 60px;
        min-height: calc(100vh - 20px);
    }
    
    .instructions {
        scroll-margin-top: 60px;
    }
    
    .how-it-works h2 {
        font-size: 28px;
        margin-bottom: clamp(8px, 2vh, 15px);
        margin-top: 0;
    }
    
    .animation-container {
        transform: scale(0.78);
        height: clamp(300px, 45vh, 56vh);
        margin: auto 0;
    }
    
    .browser-container {
        width: 90%;
        max-width: 500px;
    }
    
    .claim-box {
        min-width: 222px;
        padding: 14px 18px;
    }
    
    .claim-box:nth-child(1) { top: 100px; left: 60px; }
    .claim-box:nth-child(2) { top: 100px; right: 60px; }
    .claim-box:nth-child(3) { bottom: 120px; left: 60px; }
    .claim-box:nth-child(4) { bottom: 120px; right: 60px; }
    
    .claim-card {
        min-width: 310px;
        padding: 18px 22px;
    }
    
    .steps {
        grid-template-columns: 1fr;
        gap: 28px;
        align-items: stretch;
    }
    
    .step {
        padding: 28px 18px;
    }
    
    .container {
        padding: 0 18px;
    }

    .claims-stack {
        right: 5%;
        z-index: 30;
    }
    
    .claim-card {
        min-width: 310px;
        padding: 18px 22px;
        z-index: 31;
        box-shadow: 0 8px 32px rgba(0,0,0,0.15);
    }

    .hero-left h1 {
        font-size: 36px; 
        white-space: nowrap;
    }
    
    .section2-tooltip {
        bottom: 80px;
        right: 16px;
        padding: 10px 14px;
        font-size: 12px;
    }
    
    .section2-tooltip .tooltip-step {
        font-size: 16px;
    }
    
    .section2-tooltip .tooltip-text {
        font-size: 14px;
    }
    
    .section2-tooltip::after {
        right: 20px;
        border-left: 6px solid transparent;
        border-right: 6px solid transparent;
        border-top: 6px solid #764ba2;
    }

    .contact {
        padding: 120px 12px 44px;
        scroll-margin-top: 60px;
    }
    
    .contact h2 {
        font-size: 28px;
        margin-bottom: 32px;
    }
    
    .contact-container {
        padding: 0 18px;
    }
    
    .contact-content {
        flex-direction: column;
        text-align: center;
        gap: clamp(30px, 6vw, 40px);
        min-height: auto;
    }
    
    .contact-left {
        max-width: 100%;
    }
    
    .contact-right {
        max-width: 400px;
    }
    
    .contact-image {
        max-width: 380px;
    }
}

@media (max-width: 480px) {
    header {
        padding: 10px 16px;
    }
    
    .header-content {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 0;
        max-width: 100%;
    }
    
    .header-left {
        font-size: 14px;
        font-weight: 700;
        white-space: nowrap;
        flex-shrink: 0;
    }
    
    .header-nav-container {
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }
    
    .header-nav-container::-webkit-scrollbar {
        display: none;
    }
    
    .header-nav {
        display: flex;
        min-width: max-content;
        gap: 8px;
        padding: 0 4px;
    }
    
    .nav-link {
        white-space: nowrap;
        flex-shrink: 0;
        font-size: 11px;
        padding: 4px 4px;
        font-weight: 500;
    }
    
    .hero-left h1 {
        font-size: 28px;
        white-space: nowrap;
        gap: 20px;
    }
    
    .claims-stack {
        right: 2%;
        transform: translate(0, -50%) scale(0.9);
    }
    
    .claim-card {
        min-width: 280px;
        padding: 16px 18px;
        font-size: 14px;
    }

    .claim-box:nth-child(1) { top: 80px; left: 40px; }
    .claim-box:nth-child(2) { top: 80px; right: 40px; }
    .claim-box:nth-child(3) { bottom: 100px; left: 40px; }
    .claim-box:nth-child(4) { bottom: 100px; right: 40px; }

    .contact h2 {
        font-size: 24px;
        margin-bottom: 24px;
    }
    
    .contact-right {
        max-width: 320px;
    }
    
    .contact-image {
        max-width: 300px;
    }
}

@media (max-width: 375px) {
    .header-content {
        display: flex;
        align-items: center;
        gap: 6px;
        padding: 0 6px;
        max-width: 100%;
        flex-direction: row;
        justify-content: space-between;
    }
    
    .header-left {
        font-size: 10px;
        font-weight: 700;
        white-space: nowrap;
        flex-shrink: 0;
    }
    
    .header-nav-container {
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
        flex-shrink: 0;
    }
    
    .header-nav-container::-webkit-scrollbar {
        display: none;
    }
    
    .header-nav {
        display: flex;
        min-width: max-content;
        gap: 6px;
        padding: 0 4px;
    }
    
    .nav-link {
        white-space: nowrap;
        flex-shrink: 0;
        font-size: 8px;
        padding: 3px 4px;
        font-weight: 500;
    }
    
    header {
        padding: 8px 10px;
    }

    .claim-box {
        min-width: 180px;
        padding: 12px 16px;
        font-size: 13px;
    }
    
    .claim-box:nth-child(1) { top: 70px; left: 20px; }
    .claim-box:nth-child(2) { top: 70px; right: 20px; }
    .claim-box:nth-child(3) { bottom: 90px; left: 20px; }
    .claim-box:nth-child(4) { bottom: 90px; right: 20px; }
}

@media (max-width: 320px) {
    .header-content {
        display: flex;
        align-items: center;
        gap: 5px;
        padding: 0 5px;
        max-width: 100%;
    }
    
    .header-left {
        font-size: 9px;
        font-weight: 700;
        white-space: nowrap;
        flex-shrink: 0;
    }
    
    .header-nav-container {
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }
    
    .header-nav-container::-webkit-scrollbar {
        display: none;
    }
    
    .header-nav {
        display: flex;
        min-width: max-content;
        gap: 4px;
        padding: 0 2px;
    }
    
    .nav-link {
        white-space: nowrap;
        flex-shrink: 0;
        font-size: 7px;
        padding: 3px 3px;
        font-weight: 500;
    }
    
    header {
        padding: 7px 8px;
    }
}