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

:root {
    --bg: #050a18;
    --bg2: #0a1128;
    --surface: rgba(255, 255, 255, 0.04);
    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);
    --text: #e2e8f0;
    --text-dim: #64748b;
    --text-bright: #f8fafc;
    --accent: #3b82f6;
    --accent2: #8b5cf6;
    --accent-glow: rgba(59, 130, 246, 0.35);
    --green: #10b981;
    --amber: #f59e0b;
    --red: #ef4444;
    --cyan: #06b6d4;
    --radius: 16px;
    --radius-sm: 10px;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    overflow-x: hidden
}

body {
    font-family: 'Noto Sans SC', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased
}

a {
    color: inherit;
    text-decoration: none
}

img {
    max-width: 100%;
    display: block
}

canvas#particles {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1
}

nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 0 24px;
    transition: all .4s cubic-bezier(.16, 1, .3, 1)
}

nav.scrolled {
    background: rgba(5, 10, 24, 0.88);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border)
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 18px;
    color: var(--text-bright)
}

.nav-brand .logo-icon {
    width: 34px;
    height: 34px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow: 0 4px 16px var(--accent-glow)
}

.nav-brand .logo-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: #fff;
    transition: color .2s
}

.nav-links a:hover {
    color: var(--text-bright)
}

.nav-cta {
    padding: 8px 20px;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    color: #fff;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all .25s cubic-bezier(.16, 1, .3, 1);
    box-shadow: 0 4px 16px var(--accent-glow);
    display: inline-flex;
    align-items: center;
    gap: 6px
}

.nav-cta:hover {
    background: linear-gradient(135deg, var(--accent2), #ec4899);
    transform: translateY(-1px);
    box-shadow: 0 6px 24px rgba(139, 92, 246, .35)
}

.nav-cta svg {
    width: 16px;
    height: 16px
}

.lang-switcher {
    position: relative
}

.lang-current {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all .2s ease;
    white-space: nowrap
}

.lang-current:hover {
    background: rgba(255, 255, 255, .08);
    border-color: var(--border-hover)
}

.lang-switcher:hover .lang-current,
.lang-switcher.open .lang-current {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, .15)
}

.lang-flag {
    font-size: 16px;
    line-height: 1
}

.lang-name {
    font-size: 13px
}

.lang-arrow {
    width: 14px;
    height: 14px;
    stroke: var(--text-dim);
    transition: transform .25s ease
}

.lang-switcher:hover .lang-arrow,
.lang-switcher.open .lang-arrow {
    transform: rotate(180deg)
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 160px;
    background: rgba(10, 17, 40, .95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-hover);
    border-radius: 12px;
    padding: 6px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px) scale(.96);
    transition: all .2s cubic-bezier(.16, 1, .3, 1);
    z-index: 200;
    box-shadow: 0 12px 40px rgba(0, 0, 0, .4)
}

.lang-switcher:hover .lang-dropdown,
.lang-switcher.open .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1)
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 8px 12px;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--text);
    font-size: 13px;
    cursor: pointer;
    transition: all .15s ease;
    text-align: left;
    text-decoration: none
}

.lang-option:hover {
    background: rgba(59, 130, 246, .12);
    color: #fff
}

.lang-option.active {
    background: rgba(59, 130, 246, .18);
    color: var(--accent);
    pointer-events: none
}

.lang-option .lang-flag {
    font-size: 18px
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 24px 80px;
    position: relative;
    overflow: hidden
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(to top, var(--bg), transparent);
    pointer-events: none
}

.hero-content {
    max-width: 820px;
    position: relative;
    z-index: 1
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px 6px 8px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-dim);
    margin-bottom: 28px;
    animation: fadeUp .8s cubic-bezier(.16, 1, .3, 1) both
}

.hero-badge .dot {
    width: 8px;
    height: 8px;
    background: var(--green);
    border-radius: 50%;
    animation: pulse 2s infinite
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1
    }

    50% {
        opacity: .4
    }
}

.hero h1 {
    font-size: clamp(2.4rem, 6vw, 4.2rem);
    font-weight: 900;
    line-height: 1.12;
    letter-spacing: -.02em;
    color: var(--text-bright);
    margin-bottom: 24px;
    animation: fadeUp .8s .1s cubic-bezier(.16, 1, .3, 1) both
}

.hero h1 .gradient {
    background: linear-gradient(135deg, var(--accent), var(--accent2), #ec4899);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text
}

.hero p {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--text-dim);
    max-width: 580px;
    margin: 0 auto 40px;
    line-height: 1.75;
    animation: fadeUp .8s .2s cubic-bezier(.16, 1, .3, 1) both
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    animation: fadeUp .8s .3s cubic-bezier(.16, 1, .3, 1) both
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(24px)
    }

    to {
        opacity: 1;
        transform: translateY(0)
    }
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all .25s cubic-bezier(.16, 1, .3, 1);
    font-family: inherit;
    letter-spacing: -.01em;
    position: relative;
    overflow: hidden
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, .12) 0%, transparent 50%);
    pointer-events: none;
    border-radius: inherit
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    color: #fff;
    box-shadow: 0 4px 24px var(--accent-glow), 0 0 60px rgba(59, 130, 246, .15)
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px var(--accent-glow), 0 0 80px rgba(59, 130, 246, .2)
}

.btn-primary:active {
    transform: translateY(0) scale(.98)
}

.btn-secondary {
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border)
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, .08);
    border-color: var(--border-hover);
    transform: translateY(-1px)
}

.btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0
}

.hero-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(120px);
    opacity: .15;
    pointer-events: none
}

.hero-glow-1 {
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent)
}

.hero-glow-2 {
    bottom: -100px;
    right: -100px;
    background: var(--accent2)
}

.hero-mockup {
    margin-top: 64px;
    position: relative;
    animation: fadeUp 1s .5s cubic-bezier(.16, 1, .3, 1) both
}

.mockup-window {
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 32px 80px rgba(0, 0, 0, .5), 0 0 120px rgba(59, 130, 246, .08);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px)
}

.mockup-titlebar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 18px;
    background: rgba(255, 255, 255, .02);
    border-bottom: 1px solid var(--border)
}

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

.mockup-dot:nth-child(1) {
    background: #ef4444
}

.mockup-dot:nth-child(2) {
    background: #f59e0b
}

.mockup-dot:nth-child(3) {
    background: #10b981
}

.mockup-titlebar-text {
    flex: 1;
    text-align: center;
    font-size: 12px;
    color: var(--text-dim);
    font-weight: 500
}

.mockup-body {
    padding: 32px;
    display: flex;
    gap: 24px;
    min-height: 340px;
    align-items: stretch
}

.mockup-canvas {
    flex: 1;
    background: linear-gradient(135deg, #0f172a, #1e293b);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center
}

.mockup-canvas-inner {
    position: relative;
    width: 80%;
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, #1e293b, #334155);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, .05);
    overflow: hidden
}

.mockup-selection {
    position: absolute;
    top: 20%;
    left: 15%;
    width: 55%;
    height: 45%;
    border: 2px solid var(--accent);
    background: rgba(59, 130, 246, .08);
    border-radius: 4px;
    animation: selectionPulse 3s ease-in-out infinite
}

@keyframes selectionPulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 var(--accent-glow)
    }

    50% {
        box-shadow: 0 0 0 8px transparent
    }
}

.mockup-annotation {
    position: absolute;
    z-index: 2
}

.mockup-annotation.arrow {
    top: 28%;
    left: 55%;
    color: var(--red);
    font-size: 28px;
    animation: float 3s ease-in-out infinite
}

.mockup-annotation.rect {
    top: 55%;
    left: 25%;
    width: 40%;
    height: 20%;
    border: 2px solid var(--amber);
    border-radius: 4px;
    animation: float 3s .5s ease-in-out infinite
}

.mockup-annotation.text-anno {
    top: 18%;
    right: 18%;
    background: var(--red);
    color: #fff;
    font-size: 10px;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 4px;
    animation: float 3s 1s ease-in-out infinite
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0)
    }

    50% {
        transform: translateY(-4px)
    }
}

.mockup-form {
    width: 260px;
    min-width: 220px;
    display: flex;
    flex-direction: column;
    gap: 12px
}

.mockup-form-row {
    display: flex;
    flex-direction: column;
    gap: 4px
}

.mockup-form-label {
    font-size: 10px;
    font-weight: 600;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: .06em
}

.mockup-form-input {
    height: 32px;
    background: rgba(255, 255, 255, .04);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0 10px;
    font-size: 11px;
    color: var(--text);
    font-family: inherit
}

.mockup-form-textarea {
    height: 56px;
    background: rgba(255, 255, 255, .04);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 10px;
    font-size: 11px;
    color: var(--text);
    font-family: inherit;
    resize: none
}

.mockup-form-btn {
    height: 36px;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    margin-top: auto;
    box-shadow: 0 4px 16px var(--accent-glow)
}

.section {
    padding: 120px 0;
    position: relative;
    overflow: hidden
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--accent);
    margin-bottom: 16px
}

.section-label svg {
    width: 14px;
    height: 14px
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 900;
    color: var(--text-bright);
    letter-spacing: -.02em;
    line-height: 1.15;
    margin-bottom: 16px
}

.section-desc {
    font-size: 1.05rem;
    color: var(--text-dim);
    max-width: 560px;
    line-height: 1.7
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 56px
}

.feature-card {
    padding: 32px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all .35s cubic-bezier(.16, 1, .3, 1);
    position: relative;
    overflow: hidden
}

.feature-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at top left, rgba(59, 130, 246, .06), transparent 70%);
    opacity: 0;
    transition: opacity .35s
}

.feature-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, .3)
}

.feature-card:hover::before {
    opacity: 1
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 20px;
    position: relative
}

.feature-icon.blue {
    background: rgba(59, 130, 246, .12);
    color: var(--accent)
}

.feature-icon.purple {
    background: rgba(139, 92, 246, .12);
    color: var(--accent2)
}

.feature-icon.green {
    background: rgba(16, 185, 129, .12);
    color: var(--green)
}

.feature-icon.amber {
    background: rgba(245, 158, 11, .12);
    color: var(--amber)
}

.feature-icon.red {
    background: rgba(239, 68, 68, .12);
    color: var(--red)
}

.feature-icon.cyan {
    background: rgba(6, 182, 212, .12);
    color: var(--cyan)
}

.feature-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 10px;
    letter-spacing: -.01em
}

.feature-card p {
    font-size: 14px;
    color: var(--text-dim);
    line-height: 1.65
}

.features-footnote {
    margin-top: 40px;
    font-size: 13px;
    color: var(--text-dim);
    line-height: 1.7;
    text-align: center;
    padding: 16px 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm)
}

.features-footnote a {
    color: var(--accent);
    font-weight: 500;
    transition: color .2s
}

.features-footnote a:hover {
    color: var(--accent2)
}

.new-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    color: #fff;
    border-radius: 100px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .04em;
    margin-left: 8px;
    vertical-align: middle;
    text-transform: uppercase
}

.steps {
    display: flex;
    align-items: flex-start;
    gap: 24px;
    margin-top: 56px;
    position: relative
}

.steps::before {
    display: none
}

.step {
    flex: 1;
    text-align: center;
    position: relative
}

.step-num {
    width: 72px;
    height: 72px;
    margin: 0 auto 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 900;
    background: var(--surface);
    border: 2px solid var(--border);
    color: var(--accent);
    position: relative;
    z-index: 1;
    transition: all .35s
}

.step:hover .step-num {
    border-color: var(--accent);
    box-shadow: 0 0 30px var(--accent-glow);
    transform: scale(1.08)
}

.step h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 8px
}

.step p {
    font-size: 13px;
    color: var(--text-dim);
    line-height: 1.6
}

.step-arrow {
    font-size: 28px;
    color: var(--text-dim);
    flex-shrink: 0;
    align-self: flex-start;
    height: 72px;
    display: flex;
    align-items: center;
    letter-spacing: -4px;
    padding: 0 4px;
    opacity: .5
}

.screenshots-section {
    padding: 120px 0;
    position: relative;
    overflow: hidden
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    margin-top: 56px
}

.screenshot-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all .4s cubic-bezier(.16, 1, .3, 1);
    position: relative
}

.screenshot-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-6px);
    box-shadow: 0 24px 64px rgba(0, 0, 0, .4)
}

.screenshot-card img {
    width: 100%;
    aspect-ratio: 16/10;
    object-fit: cover;
    object-position: top;
    border-bottom: 1px solid var(--border);
    cursor: zoom-in;
    transition: opacity .2s
}

.screenshot-card img:hover {
    opacity: .85
}

.screenshot-card-body {
    padding: 20px 24px
}

.screenshot-card-body h3 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 6px
}

.screenshot-card-body p {
    font-size: 13px;
    color: var(--text-dim);
    line-height: 1.6
}

.diagnostic-section {
    padding: 120px 0;
    position: relative
}

.diagnostic-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 56px
}

.diagnostic-card {
    padding: 36px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all .35s cubic-bezier(.16, 1, .3, 1);
    position: relative;
    overflow: hidden
}

.diagnostic-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent2));
    opacity: 0;
    transition: opacity .35s
}

.diagnostic-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, .3)
}

.diagnostic-card:hover::before {
    opacity: 1
}

.diagnostic-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    margin-bottom: 20px
}

.diagnostic-icon.console {
    background: rgba(239, 68, 68, .1);
    color: var(--red)
}

.diagnostic-icon.network {
    background: rgba(245, 158, 11, .1);
    color: var(--amber)
}

.diagnostic-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 10px
}

.diagnostic-card p {
    font-size: 14px;
    color: var(--text-dim);
    line-height: 1.65;
    margin-bottom: 16px
}

.diagnostic-detail {
    background: rgba(0, 0, 0, .3);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px;
    font-family: 'Inter', monospace;
    font-size: 12px;
    line-height: 1.8;
    color: var(--text-dim);
    overflow-x: auto
}

.diagnostic-detail .label {
    color: var(--accent);
    font-weight: 600
}

.diagnostic-detail .value {
    color: var(--text)
}

.diagnostic-detail .error {
    color: var(--red)
}

.diagnostic-detail .warn {
    color: var(--amber)
}

.diagnostic-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 32px
}

.diagnostic-feature {
    padding: 20px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    text-align: center;
    transition: all .3s
}

.diagnostic-feature:hover {
    border-color: var(--border-hover)
}

.diagnostic-feature .icon {
    font-size: 24px;
    margin-bottom: 10px
}

.diagnostic-feature h4 {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 4px
}

.diagnostic-feature p {
    font-size: 12px;
    color: var(--text-dim);
    line-height: 1.5
}

.comparison {
    margin-top: 56px
}

.comparison-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden
}

.comparison-table th,
.comparison-table td {
    padding: 16px 24px;
    text-align: left;
    font-size: 14px;
    border-bottom: 1px solid var(--border)
}

.comparison-table th {
    font-weight: 600;
    color: var(--text-dim);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .06em;
    background: rgba(255, 255, 255, .02)
}

.comparison-table th:first-child {
    width: 200px
}

.comparison-table td:first-child {
    font-weight: 600;
    color: var(--text)
}

.comparison-table tr:last-child td {
    border-bottom: none
}

.comparison-table .highlight {
    color: var(--accent);
    font-weight: 700
}

.comparison-table .check {
    color: var(--green);
    font-size: 18px
}

.comparison-table .cross {
    color: var(--text-dim);
    opacity: .3;
    font-size: 18px
}

.privacy-section {
    margin-top: 56px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px
}

.privacy-card {
    padding: 32px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    display: flex;
    gap: 20px;
    align-items: flex-start;
    transition: all .3s
}

.privacy-card:hover {
    border-color: var(--border-hover)
}

.privacy-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(16, 185, 129, .1);
    color: var(--green);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0
}

.privacy-card h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 6px
}

.privacy-card p {
    font-size: 13px;
    color: var(--text-dim);
    line-height: 1.6
}

.lang-section {
    margin-top: 56px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center
}

.lang-tag {
    padding: 10px 20px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    transition: all .3s;
    display: flex;
    align-items: center;
    gap: 8px
}

.lang-tag:hover {
    border-color: var(--accent);
    background: rgba(59, 130, 246, .06);
    transform: translateY(-2px)
}

.lang-tag .flag {
    font-size: 14px;
    font-weight: 600;
    line-height: 1;
    display: flex;
    align-items: center
}

.cta-section {
    text-align: center;
    padding: 140px 0;
    position: relative
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 400px;
    background: radial-gradient(ellipse, rgba(59, 130, 246, .12), transparent 70%);
    pointer-events: none
}

.cta-section .section-title {
    margin-bottom: 12px
}

.cta-section .section-desc {
    margin: 0 auto 40px;
    text-align: center
}

.cta-section .btn-primary {
    font-size: 17px;
    padding: 18px 40px;
    border-radius: 12px
}

.lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(5, 10, 24, .92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    opacity: 0;
    visibility: hidden;
    transition: all .35s cubic-bezier(.16, 1, .3, 1)
}

.lightbox.active {
    opacity: 1;
    visibility: visible
}

.lightbox img {
    max-width: 92vw;
    max-height: 88vh;
    border-radius: var(--radius);
    box-shadow: 0 32px 80px rgba(0, 0, 0, .6);
    transform: scale(.92);
    transition: transform .35s cubic-bezier(.16, 1, .3, 1)
}

.lightbox.active img {
    transform: scale(1)
}

.lightbox-close {
    position: absolute;
    top: 24px;
    right: 28px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .12);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all .2s;
    color: #fff;
    font-size: 20px
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, .16);
    transform: scale(1.08)
}

.lightbox-caption {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    padding: 10px 24px;
    background: rgba(255, 255, 255, .06);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    white-space: nowrap
}

footer {
    padding: 40px 0;
    border-top: 1px solid var(--border);
    text-align: center
}

footer p {
    font-size: 13px;
    color: var(--text-dim)
}

footer a {
    color: var(--accent);
    transition: color .2s
}

footer a:hover {
    color: var(--accent2)
}

.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: all .8s cubic-bezier(.16, 1, .3, 1)
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0)
}

.email-preview {
    margin-top: 56px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 16px 48px rgba(0, 0, 0, .3)
}

.email-header {
    padding: 20px 28px;
    border-bottom: 1px solid var(--border);
    background: rgba(255, 255, 255, .02)
}

.email-header-row {
    display: flex;
    gap: 12px;
    margin-bottom: 8px;
    font-size: 13px
}

.email-header-row:last-child {
    margin-bottom: 0
}

.email-header-label {
    color: var(--text-dim);
    font-weight: 600;
    min-width: 60px
}

.email-header-value {
    color: var(--text)
}

.email-body {
    padding: 28px;
    font-size: 13px;
    line-height: 1.8;
    color: var(--text);
    font-family: 'Inter', 'Noto Sans SC', sans-serif
}

.email-body h4 {
    color: var(--accent);
    font-size: 13px;
    font-weight: 700;
    margin: 20px 0 8px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border)
}

.email-body h4:first-child {
    margin-top: 0
}

.email-body .field {
    display: flex;
    gap: 8px;
    margin-bottom: 4px
}

.email-body .field-label {
    color: var(--text-dim);
    font-weight: 500;
    min-width: 80px
}

.email-body .field-value {
    color: var(--text)
}

.email-body .error-item {
    padding: 8px 12px;
    background: rgba(239, 68, 68, .06);
    border-left: 3px solid var(--red);
    border-radius: 0 6px 6px 0;
    margin-bottom: 6px;
    font-family: 'Inter', monospace;
    font-size: 12px
}

.email-body .network-item {
    padding: 8px 12px;
    background: rgba(245, 158, 11, .06);
    border-left: 3px solid var(--amber);
    border-radius: 0 6px 6px 0;
    margin-bottom: 6px;
    font-family: 'Inter', monospace;
    font-size: 12px
}

.email-body .screenshot-note {
    padding: 12px 16px;
    background: rgba(59, 130, 246, .06);
    border: 1px dashed var(--accent);
    border-radius: var(--radius-sm);
    color: var(--accent);
    font-size: 12px;
    margin-top: 16px
}

@media(max-width:900px) {
    .features-grid {
        grid-template-columns: 1fr 1fr
    }

    .steps {
        flex-direction: column;
        gap: 32px;
        align-items: center
    }

    .step-arrow {
        transform: rotate(90deg);
        align-self: center;
        height: auto;
        padding: 0
    }

    .privacy-section {
        grid-template-columns: 1fr
    }

    .mockup-body {
        flex-direction: column;
        padding: 16px
    }

    .mockup-form {
        width: 100%
    }

    .nav-links {
        display: none
    }

    .lang-switcher {
        position: fixed;
        top: 16px;
        right: 16px;
        z-index: 110;
        display: flex
    }

    .lang-dropdown {
        right: 0
    }

    .diagnostic-grid {
        grid-template-columns: 1fr
    }

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

    .screenshots-grid {
        grid-template-columns: 1fr
    }
}

@media(max-width:600px) {
    .container {
        padding: 0 16px
    }

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

    .hero h1 {
        font-size: 2.2rem
    }

    .hero-actions {
        flex-direction: column;
        width: 100%
    }

    .hero-actions .btn {
        width: 100%;
        justify-content: center
    }

    .comparison-table {
        font-size: 12px;
        display: block;
        overflow-x: auto
    }

    .comparison-table th,
    .comparison-table td {
        padding: 12px 14px
    }

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

    .lang-section {
        gap: 8px
    }

    .lang-tag {
        padding: 8px 14px;
        font-size: 12px
    }
}