/* 驱动精灵 V3 - 琥珀科技主题 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
    --primary: #f97316;
    --primary-light: #fb923c;
    --primary-dark: #ea580c;
    --primary-deep: #c2410c;
    --accent: #eab308;
    --accent-light: #facc15;
    --cool: #38bdf8;
    --cool-light: #7dd3fc;
    --success: #22c55e;
    --bg-deep: #0c0a09;
    --bg-dark: #1c1917;
    --bg-card: rgba(249, 115, 22, 0.06);
    --bg-card-hover: rgba(249, 115, 22, 0.12);
    --bg-glass: rgba(255, 255, 255, 0.025);
    --bg-glass-strong: rgba(255, 255, 255, 0.055);
    --bg-glass-heavy: rgba(255, 255, 255, 0.08);
    --text-primary: #fafaf9;
    --text-secondary: rgba(250, 250, 249, 0.5);
    --text-tertiary: rgba(250, 250, 249, 0.3);
    --border-subtle: rgba(249, 115, 22, 0.1);
    --border-medium: rgba(249, 115, 22, 0.22);
    --border-cool: rgba(56, 189, 248, 0.15);
    --glow-primary: rgba(249, 115, 22, 0.35);
    --glow-accent: rgba(234, 179, 8, 0.3);
    --glow-cool: rgba(56, 189, 248, 0.25);
    --radius-xs: 6px;
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 22px;
    --radius-xl: 30px;
    --radius-full: 9999px;
    --shadow-glow: 0 0 80px -20px var(--glow-primary);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', 'Microsoft YaHei', 'PingFang SC', sans-serif;
    min-height: 100vh;
    color: var(--text-primary);
    background: var(--bg-deep);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

::selection { background: var(--primary); color: white; }

/* ========== Background Effects ========== */
.bg-effects {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.35;
}

.orb-1 {
    width: 700px; height: 700px;
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    top: -250px; right: -200px;
    animation: orb-move 28s ease-in-out infinite;
}

.orb-2 {
    width: 500px; height: 500px;
    background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
    bottom: -200px; left: -150px;
    animation: orb-move 32s ease-in-out infinite reverse;
}

.orb-3 {
    width: 400px; height: 400px;
    background: radial-gradient(circle, var(--cool) 0%, transparent 70%);
    top: 50%; left: 40%;
    animation: orb-move 24s ease-in-out infinite;
    animation-delay: -10s;
    opacity: 0.2;
}

@keyframes orb-move {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(50px, -50px) scale(1.1); }
    66% { transform: translate(-40px, 40px) scale(0.92); }
}

.mesh-gradient {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(249,115,22,0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(234,179,8,0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(56,189,248,0.02) 0%, transparent 50%);
}

.dot-pattern {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(249,115,22,0.07) 1px, transparent 1px);
    background-size: 32px 32px;
}

/* ========== Navigation ========== */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar.scrolled {
    background: rgba(12, 10, 9, 0.88);
    backdrop-filter: blur(24px) saturate(180%);
    border-bottom: 1px solid var(--border-subtle);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    width: 40px; height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex; align-items: center; justify-content: center;
    font-size: 20px;
    box-shadow: 0 4px 24px var(--glow-primary);
}

.logo-text {
    font-size: 18px;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    gap: 2px;
    background: var(--bg-glass-heavy);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-full);
    padding: 4px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding: 8px 22px;
    border-radius: var(--radius-full);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.nav-links a.active {
    color: white;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    box-shadow: 0 2px 16px var(--glow-primary);
}

/* ========== Hero Section ========== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 32px 80px;
    position: relative;
    z-index: 1;
}

.hero-content {
    text-align: center;
    max-width: 780px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-full);
    font-size: 13px;
    color: var(--primary-light);
    font-weight: 500;
    margin-bottom: 36px;
    animation: hero-fade 0.8s ease both;
}

.badge-dot {
    width: 8px; height: 8px;
    background: var(--success);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--success);
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.8); }
}

.hero-icon-wrap {
    position: relative;
    width: 140px; height: 140px;
    margin: 0 auto 48px;
    animation: hero-fade 0.8s ease 0.1s both;
}

.hero-icon-box {
    width: 140px; height: 140px;
    border-radius: 36px;
    background: linear-gradient(145deg, var(--primary), var(--accent));
    display: flex; align-items: center; justify-content: center;
    font-size: 64px;
    box-shadow: 0 24px 80px var(--glow-primary), 0 0 160px var(--glow-accent);
    position: relative; z-index: 2;
    animation: icon-float 5s ease-in-out infinite;
}

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

.hero-icon-ring {
    position: absolute;
    border: 1.5px solid var(--border-medium);
    border-radius: 44px;
    animation: ring-out 3.5s ease-out infinite;
    opacity: 0;
}

.hero-icon-ring:nth-child(2) { animation-delay: 1.2s; }
.hero-icon-ring:nth-child(3) { animation-delay: 2.4s; }

@keyframes ring-out {
    0% { inset: -10px; opacity: 0.5; }
    100% { inset: -70px; opacity: 0; }
}

.hero-title {
    font-size: 68px;
    font-weight: 900;
    letter-spacing: -0.045em;
    line-height: 1.08;
    margin-bottom: 20px;
    animation: hero-fade 0.8s ease 0.2s both;
}

.hero-title-text {
    background: linear-gradient(135deg, var(--text-primary) 10%, var(--primary-light) 55%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 19px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 44px;
    animation: hero-fade 0.8s ease 0.3s both;
}

.hero-desc strong {
    color: var(--primary-light);
    font-weight: 600;
}

.hero-actions {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
    animation: hero-fade 0.8s ease 0.4s both;
}

@keyframes hero-fade {
    from { opacity: 0; transform: translateY(28px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 34px;
    border-radius: var(--radius-full);
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 24px var(--glow-primary);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 40px var(--glow-primary);
    filter: brightness(1.12);
}

.btn-primary:active { transform: translateY(-1px); }

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1.5px solid var(--border-medium);
}

.btn-outline:hover {
    background: var(--bg-card);
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(249,115,22,0.12);
}

.btn-icon { width: 18px; height: 18px; }

/* ========== Stats Section ========== */
.stats-section {
    padding: 0 32px 100px;
    position: relative;
    z-index: 1;
}

.stats-grid {
    max-width: 960px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.stat-card {
    background: var(--bg-glass-strong);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 28px 16px;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
    background: var(--bg-card-hover);
}

.stat-emoji {
    font-size: 28px;
    margin-bottom: 14px;
    display: block;
}

.stat-num {
    font-size: 34px;
    font-weight: 800;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, var(--primary-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline;
}

.stat-unit {
    font-size: 16px;
    color: var(--primary-light);
    font-weight: 600;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    margin-top: 4px;
}

/* ========== Features Section ========== */
.features-section {
    padding: 100px 32px;
    position: relative;
    z-index: 1;
}

.section-header {
    text-align: center;
    max-width: 560px;
    margin: 0 auto 56px;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 700;
    color: var(--primary-light);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 18px;
}

.section-title {
    font-size: 38px;
    font-weight: 800;
    letter-spacing: -0.035em;
    line-height: 1.15;
    margin-bottom: 14px;
    color: var(--text-primary);
}

.section-desc {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.features-grid {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.feature-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 32px;
    display: flex;
    gap: 20px;
    align-items: flex-start;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 3px; height: 0;
    background: linear-gradient(180deg, var(--primary), var(--accent));
    transition: height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 0 0 3px 0;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-medium);
    box-shadow: var(--shadow-glow);
    background: var(--bg-glass-strong);
}

.feature-card:hover::before { height: 100%; }

.feature-emoji {
    width: 50px; height: 50px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    display: flex; align-items: center; justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
    transition: all 0.3s;
}

.feature-card:hover .feature-emoji {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-color: transparent;
    box-shadow: 0 6px 20px var(--glow-primary);
}

.feature-body h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

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

/* ========== Steps Section ========== */
.steps-section {
    padding: 100px 32px;
    position: relative;
    z-index: 1;
}

.steps-container {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    position: relative;
}

.steps-container::before {
    content: '';
    position: absolute;
    top: 36px;
    left: 16.67%; right: 16.67%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent), var(--cool));
    opacity: 0.15;
}

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

.step-num {
    width: 52px; height: 52px;
    margin: 0 auto 18px;
    border-radius: 50%;
    background: var(--bg-deep);
    border: 2px solid var(--border-medium);
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; font-weight: 800;
    color: var(--primary-light);
    position: relative; z-index: 2;
    transition: all 0.3s;
}

.step-item:hover .step-num {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-color: transparent;
    color: white;
    box-shadow: 0 8px 28px var(--glow-primary);
}

.step-item h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
}

.step-item p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========== CTA Section ========== */
.cta-section {
    padding: 80px 32px;
    position: relative;
    z-index: 1;
}

.cta-box {
    max-width: 780px;
    margin: 0 auto;
    padding: 64px 48px;
    background: linear-gradient(135deg, rgba(249,115,22,0.08), rgba(234,179,8,0.05), rgba(56,189,248,0.03));
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    top: -100px; right: -100px;
    width: 300px; height: 300px;
    background: radial-gradient(circle, var(--glow-primary) 0%, transparent 60%);
    opacity: 0.25;
    animation: cta-drift 10s ease-in-out infinite;
}

@keyframes cta-drift {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-30px, 20px); }
}

.cta-box > * { position: relative; z-index: 1; }

.cta-title {
    font-size: 34px;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 14px;
}

.cta-desc {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

/* ========== Footer ========== */
.footer {
    padding: 40px 32px;
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--border-subtle);
}

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

.footer-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 14px;
}

.footer-sep { color: var(--text-tertiary); }

.footer-note {
    color: var(--text-tertiary);
    font-size: 13px;
}

/* ========== Download Page ========== */
.download-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 32px 60px;
    position: relative;
    z-index: 1;
}

.download-wrap {
    max-width: 540px;
    width: 100%;
    animation: hero-fade 0.8s ease both;
}

.download-card {
    background: var(--bg-glass-strong);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 44px;
    position: relative;
    overflow: hidden;
}

.download-card::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent), var(--cool));
}

.dl-header {
    display: flex;
    align-items: center;
    gap: 22px;
    margin-bottom: 28px;
}

.dl-icon {
    width: 76px; height: 76px;
    border-radius: 22px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex; align-items: center; justify-content: center;
    font-size: 40px;
    flex-shrink: 0;
    box-shadow: 0 8px 32px var(--glow-primary);
    position: relative;
}

.dl-icon-glow {
    position: absolute;
    inset: -10px;
    border-radius: 28px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    opacity: 0.25;
    filter: blur(18px);
    animation: glow-pulse 3s ease-in-out infinite;
}

@keyframes glow-pulse {
    0%, 100% { opacity: 0.25; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(1.08); }
}

.dl-info h1 {
    font-size: 26px;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 2px;
}

.dl-info p {
    color: var(--text-secondary);
    font-size: 14px;
}

.dl-meta {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    padding: 18px;
    background: rgba(0,0,0,0.3);
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    border: 1px solid var(--border-subtle);
}

.meta-item { text-align: center; }

.meta-label {
    display: block;
    color: var(--text-tertiary);
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 3px;
}

.meta-value {
    color: var(--primary-light);
    font-weight: 700;
    font-size: 14px;
}

.dl-specs { margin-bottom: 22px; }

.dl-specs h3 {
    font-size: 11px;
    color: var(--text-tertiary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 10px;
}

.specs-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.spec-box {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 14px;
    background: rgba(0,0,0,0.25);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-subtle);
    transition: all 0.3s;
}

.spec-box:hover {
    background: var(--bg-card);
    border-color: var(--border-medium);
}

.spec-box .emoji { font-size: 18px; }
.spec-box .name { font-size: 14px; font-weight: 500; }
.spec-box .ver { font-size: 11px; color: var(--text-tertiary); margin-left: auto; }

.dl-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 26px;
}

.dl-tag {
    padding: 5px 13px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 500;
    color: var(--primary-light);
}

.dl-btn-main {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: 100%;
    padding: 18px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 8px 32px var(--glow-primary);
    font-family: inherit;
    letter-spacing: -0.01em;
}

.dl-btn-main:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 48px var(--glow-primary);
    filter: brightness(1.12);
}

.dl-btn-main svg { width: 20px; height: 20px; }

.dl-alt-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-top: 18px;
}

.dl-alt-links a {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: color 0.3s;
}

.dl-alt-links a:hover { color: var(--primary-light); }

.back-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 26px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s;
}

.back-link:hover { color: var(--primary-light); }
.back-link svg { width: 16px; height: 16px; }

/* ========== 404 Page ========== */
.error-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 32px 60px;
    position: relative;
    z-index: 1;
}

.error-content {
    text-align: center;
    max-width: 520px;
    animation: hero-fade 0.8s ease both;
}

.error-code {
    font-size: 140px;
    font-weight: 900;
    letter-spacing: -0.06em;
    line-height: 1;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.5;
    user-select: none;
}

.error-title {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.02em;
}

.error-message {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 36px;
}

.error-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ========== Scroll Animations ========== */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: all 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ========== Responsive ========== */
@media (max-width: 768px) {
    .hero-title { font-size: 46px; }
    .hero-desc { font-size: 16px; }
    .hero-icon-box { width: 110px; height: 110px; font-size: 50px; border-radius: 30px; }
    .hero-icon-wrap { width: 110px; height: 110px; margin-bottom: 36px; }

    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: 1fr; }
    .steps-container { grid-template-columns: 1fr; gap: 20px; }
    .steps-container::before { display: none; }

    .section-title { font-size: 30px; }
    .cta-title { font-size: 26px; }
    .cta-box { padding: 40px 24px; }

    .download-card { padding: 32px 22px; }
    .dl-header { flex-direction: column; text-align: center; }
    .specs-row { grid-template-columns: 1fr; }
    .dl-alt-links { flex-direction: column; gap: 10px; }
    .footer-inner { flex-direction: column; gap: 10px; text-align: center; }
}

@media (max-width: 480px) {
    .hero-section { padding: 100px 20px 60px; }
    .hero-title { font-size: 36px; }
    .hero-desc { font-size: 15px; }
    .hero-actions { flex-direction: column; align-items: center; }

    .stats-grid { gap: 10px; }
    .stat-num { font-size: 26px; }
    .stat-card { padding: 20px 14px; }

    .features-section { padding: 60px 20px; }
    .section-title { font-size: 26px; }

    .nav-container { padding: 12px 18px; }
    .error-code { font-size: 90px; }
    .error-actions { flex-direction: column; align-items: center; }
}