:root {
    --accent: #E8451C;
    --accent-light: #FF5C35;
    --accent-soft: rgba(232, 69, 28, 0.08);
    --accent-border: rgba(232, 69, 28, 0.2);
    --black: #111111;
    --dark: #1A1A1A;
    --gray-900: #222222;
    --gray-700: #444444;
    --gray-500: #666666;
    --gray-400: #888888;
    --gray-300: #AAAAAA;
    --gray-200: #D4D4D4;
    --gray-100: #EEEEEE;
    --gray-50: #F7F7F7;
    --white: #FFFFFF;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
    --shadow: 0 4px 24px rgba(0,0,0,0.06);
    --shadow-lg: 0 12px 48px rgba(0,0,0,0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--white);
    color: var(--black);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    backdrop-filter: blur(20px);
    background: rgba(255, 255, 255, 0.85);
    border-bottom: 1px solid var(--gray-100);
    transition: all 0.3s ease;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--black);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.nav-logo-icon {
    width: 34px;
    height: 34px;
    background: var(--black);
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.nav-links {
    display: flex;
    gap: 36px;
    list-style: none;
}

.nav-links a {
    color: var(--gray-500);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

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

.nav-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.lang-switch {
    color: var(--gray-500);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    padding: 6px 14px;
    border: 1px solid var(--gray-200);
    border-radius: 100px;
    transition: all 0.2s;
}

.lang-switch:hover {
    color: var(--black);
    border-color: var(--gray-400);
}

.nav-cta {
    padding: 10px 24px;
    background: var(--black);
    color: var(--white);
    border: none;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
}

.nav-cta:hover {
    background: var(--gray-900);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 140px 48px 100px;
    position: relative;
}

.hero-content {
    max-width: 860px;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: var(--accent-soft);
    border: 1px solid var(--accent-border);
    border-radius: 100px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 36px;
}

.hero-badge::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
}

.hero h1 {
    font-size: clamp(2.8rem, 6vw, 4.8rem);
    font-weight: 900;
    line-height: 1.08;
    margin-bottom: 28px;
    color: var(--black);
    letter-spacing: -0.03em;
}

.hero h1 .highlight {
    color: var(--accent);
}

.hero p {
    font-size: 1.2rem;
    color: var(--gray-500);
    max-width: 560px;
    margin: 0 auto 52px;
    line-height: 1.8;
    font-weight: 400;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 36px;
    background: var(--black);
    color: var(--white);
    border: none;
    border-radius: 100px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
}

.btn-primary:hover {
    background: var(--dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 36px;
    background: transparent;
    color: var(--black);
    border: 1.5px solid var(--gray-200);
    border-radius: 100px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
}

.btn-secondary:hover {
    border-color: var(--gray-400);
    background: var(--gray-50);
}

/* Phone Mockup */
.hero-mockup {
    margin-top: 80px;
    display: flex;
    justify-content: center;
}

.phone-frame {
    width: 290px;
    height: 600px;
    background: var(--black);
    border-radius: 44px;
    padding: 14px;
    box-shadow: var(--shadow-lg), 0 0 0 1px rgba(0,0,0,0.05);
    position: relative;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--white);
    border-radius: 32px;
    overflow: hidden;
    padding: 44px 16px 16px;
}

.phone-notch {
    position: absolute;
    top: 14px;
    left: 50%;
    transform: translateX(-50%);
    width: 90px;
    height: 26px;
    background: var(--black);
    border-radius: 0 0 16px 16px;
    z-index: 10;
}

.timeline-demo {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.timeline-header {
    text-align: center;
    margin-bottom: 14px;
}

.timeline-header h3 {
    font-size: 0.7rem;
    color: var(--gray-400);
    margin-bottom: 2px;
    font-weight: 500;
}

.timeline-header .date {
    font-size: 1rem;
    font-weight: 800;
    color: var(--black);
}

.timeline-item {
    display: flex;
    align-items: stretch;
    gap: 10px;
    padding: 6px 0;
}

.timeline-time {
    font-size: 0.6rem;
    color: var(--gray-400);
    width: 34px;
    flex-shrink: 0;
    padding-top: 6px;
    font-weight: 500;
}

.timeline-line {
    width: 2px;
    background: var(--gray-100);
    position: relative;
    flex-shrink: 0;
}

.timeline-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    position: absolute;
    top: 8px;
    left: -3px;
}

.timeline-card {
    flex: 1;
    padding: 10px 12px;
    border-radius: 10px;
    font-size: 0.7rem;
}

.timeline-card .title {
    font-weight: 600;
    margin-bottom: 2px;
    color: var(--black);
}

.timeline-card .time-range {
    font-size: 0.58rem;
    color: var(--gray-400);
}

.card-work { background: #F0F4FF; border-left: 3px solid #4A7BF7; }
.card-focus { background: var(--accent-soft); border-left: 3px solid var(--accent); }
.card-meeting { background: #F0FDF4; border-left: 3px solid #22C55E; }
.card-exercise { background: #FFF7ED; border-left: 3px solid #F97316; }
.card-study { background: #FAF5FF; border-left: 3px solid #A855F7; }

.dot-work { background: #4A7BF7; }
.dot-focus { background: var(--accent); }
.dot-meeting { background: #22C55E; }
.dot-exercise { background: #F97316; }
.dot-study { background: #A855F7; }

/* Section Common */
section {
    padding: 120px 48px;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 72px;
}

.section-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--black);
}

.section-header p {
    font-size: 1.05rem;
    color: var(--gray-500);
    line-height: 1.7;
}

/* Features Section */
.features-section {
    background: var(--gray-50);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1100px;
    margin: 0 auto;
}

.feature-card {
    background: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius);
    padding: 36px 30px;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.feature-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 20px;
    background: var(--gray-50);
}

.feature-icon.accent-icon {
    background: var(--accent-soft);
}

.feature-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--black);
}

.feature-card p {
    color: var(--gray-500);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* Highlights Section */
.highlights {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 100px;
}

.highlight-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.highlight-row.reverse {
    direction: rtl;
}

.highlight-row.reverse > * {
    direction: ltr;
}

.highlight-text {
    max-width: 460px;
}

.highlight-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 12px;
}

.highlight-text h3 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.highlight-text p {
    color: var(--gray-500);
    font-size: 1rem;
    line-height: 1.8;
}

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

.visual-card {
    width: 100%;
    max-width: 420px;
    aspect-ratio: 4/3;
    background: var(--gray-50);
    border: 1px solid var(--gray-100);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.visual-views {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    padding: 24px;
    width: 100%;
}

.mini-view {
    background: var(--white);
    border-radius: 10px;
    padding: 12px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
}

.mini-view-label {
    font-size: 0.6rem;
    font-weight: 600;
    color: var(--gray-400);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.mini-view-bars {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.mini-bar {
    height: 6px;
    border-radius: 3px;
    background: var(--gray-100);
}

.mini-bar.active { background: var(--accent); opacity: 0.7; }
.mini-bar.blue { background: #4A7BF7; opacity: 0.5; }
.mini-bar.green { background: #22C55E; opacity: 0.5; }

.mini-view-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 3px;
}

.mini-dot {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 2px;
    background: var(--gray-100);
}

.mini-dot.filled { background: var(--accent); opacity: 0.4; }
.mini-dot.filled-2 { background: var(--accent); opacity: 0.7; }
.mini-dot.filled-3 { background: var(--accent); opacity: 1; }

.visual-widget {
    padding: 32px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.widget-demo {
    width: 240px;
    background: var(--white);
    border-radius: 20px;
    padding: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-100);
}

.widget-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.widget-title {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--black);
}

.widget-icon {
    width: 18px;
    height: 18px;
    background: var(--accent-soft);
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
}

.widget-tasks {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.widget-task {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.6rem;
    color: var(--gray-700);
}

.widget-task-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

.widget-task-time {
    margin-left: auto;
    color: var(--gray-400);
    font-size: 0.55rem;
}

.widget-small {
    width: 110px;
    background: var(--white);
    border-radius: 16px;
    padding: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-100);
    text-align: center;
}

.widget-small .focus-time {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--accent);
}

.widget-small .focus-label {
    font-size: 0.55rem;
    color: var(--gray-400);
    margin-top: 2px;
}

.widget-row {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.visual-sync {
    padding: 32px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sync-demo {
    display: flex;
    align-items: center;
    gap: 24px;
}

.sync-device {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.sync-device-frame {
    background: var(--white);
    border-radius: 14px;
    padding: 10px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-100);
}

.sync-device-screen {
    width: 60px;
    height: 90px;
    background: var(--gray-50);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    padding: 6px;
    gap: 3px;
}

.sync-device-screen.tablet {
    width: 90px;
    height: 70px;
}

.sync-mini-bar {
    height: 4px;
    border-radius: 2px;
    background: var(--gray-200);
}

.sync-mini-bar.accent { background: var(--accent); opacity: 0.6; }

.sync-device-label {
    font-size: 0.6rem;
    color: var(--gray-400);
    font-weight: 500;
}

.sync-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.sync-arrow-line {
    width: 40px;
    height: 2px;
    background: var(--accent);
    opacity: 0.4;
}

.sync-arrow-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    animation: syncPulse 2s infinite;
}

@keyframes syncPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.3); opacity: 0.6; }
}

.sync-cloud {
    font-size: 1.6rem;
    color: var(--gray-300);
}

/* Stats */
.stats-section {
    background: var(--black);
    color: var(--white);
}

.stats-section .section-header h2 {
    color: var(--white);
}

.stats-section .section-header p {
    color: var(--gray-300);
}

.stats-section .section-label {
    color: var(--accent-light);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    max-width: 900px;
    margin: 0 auto;
}

.stat-card {
    text-align: center;
    padding: 24px 16px;
}

.stat-number {
    font-size: 2.8rem;
    font-weight: 900;
    color: var(--accent-light);
    margin-bottom: 6px;
    letter-spacing: -0.02em;
}

.stat-label {
    color: var(--gray-300);
    font-size: 0.85rem;
    font-weight: 400;
}

/* Steps */
.steps {
    max-width: 700px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 28px;
}

.step-number {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 800;
    flex-shrink: 0;
    background: var(--black);
    color: var(--white);
}

.step-content h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--black);
}

.step-content p {
    color: var(--gray-500);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* Pricing */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 28px;
    max-width: 760px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--white);
    border: 1.5px solid var(--gray-100);
    border-radius: var(--radius);
    padding: 40px 32px;
    position: relative;
    transition: all 0.3s;
}

.pricing-card.featured {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent-border);
}

.pricing-card.featured::before {
    content: attr(data-badge);
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 5px 18px;
    background: var(--accent);
    color: white;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.pricing-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-500);
    margin-bottom: 8px;
}

.pricing-price {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--black);
    margin-bottom: 4px;
}

.pricing-price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--gray-400);
}

.pricing-desc {
    color: var(--gray-400);
    font-size: 0.85rem;
    margin-bottom: 28px;
}

.pricing-features {
    list-style: none;
    margin-bottom: 32px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 9px 0;
    color: var(--gray-700);
    font-size: 0.9rem;
}

.pricing-features li::before {
    content: '✓';
    color: var(--accent);
    font-weight: 700;
}

.pricing-btn {
    display: block;
    width: 100%;
    padding: 14px;
    text-align: center;
    border-radius: 100px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
}

.pricing-btn-primary {
    background: var(--black);
    color: var(--white);
    border: none;
}

.pricing-btn-primary:hover {
    background: var(--dark);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.pricing-btn-secondary {
    background: transparent;
    color: var(--black);
    border: 1.5px solid var(--gray-200);
}

.pricing-btn-secondary:hover {
    border-color: var(--gray-400);
    background: var(--gray-50);
}

/* CTA */
.cta-section {
    text-align: center;
    padding: 140px 48px;
    background: var(--gray-50);
}

.cta-content h2 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.cta-content p {
    font-size: 1.05rem;
    color: var(--gray-500);
    margin-bottom: 40px;
    max-width: 450px;
    margin-left: auto;
    margin-right: auto;
}

/* Footer */
footer {
    padding: 60px 48px 30px;
    background: var(--white);
    border-top: 1px solid var(--gray-100);
}

.footer-content {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 40px;
}

.footer-brand {
    max-width: 280px;
}

.footer-brand .nav-logo {
    margin-bottom: 14px;
}

.footer-brand p {
    color: var(--gray-400);
    font-size: 0.85rem;
    line-height: 1.7;
}

.footer-links {
    display: flex;
    gap: 60px;
}

.footer-column h4 {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 14px;
    color: var(--black);
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 8px;
}

.footer-column a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.2s;
}

.footer-column a:hover {
    color: var(--black);
}

.footer-bottom {
    max-width: 1100px;
    margin: 40px auto 0;
    padding-top: 24px;
    border-top: 1px solid var(--gray-100);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--gray-400);
    font-size: 0.8rem;
}

/* Legal Pages */
.legal-page {
    max-width: 720px;
    margin: 0 auto;
    padding: 140px 48px 80px;
}

.legal-page h1 {
    font-size: 2.4rem;
    font-weight: 800;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.legal-page .last-updated {
    color: var(--gray-400);
    font-size: 0.9rem;
    margin-bottom: 48px;
}

.legal-page h2 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-top: 40px;
    margin-bottom: 12px;
    color: var(--black);
}

.legal-page p {
    color: var(--gray-700);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 16px;
    white-space: pre-line;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .highlight-row {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .highlight-row.reverse {
        direction: ltr;
    }
}

@media (max-width: 768px) {
    nav {
        padding: 12px 20px;
    }

    .nav-links {
        display: none;
    }

    section {
        padding: 80px 20px;
    }

    .hero {
        padding: 110px 20px 60px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .step {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer-content {
        flex-direction: column;
    }

    .footer-links {
        flex-direction: column;
        gap: 28px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .sync-demo {
        flex-direction: column;
        gap: 16px;
    }

    .sync-arrow {
        transform: rotate(90deg);
    }

    .legal-page {
        padding: 110px 20px 60px;
    }

    .legal-page h1 {
        font-size: 1.8rem;
    }
}