/* ==========================================================================
   AI Frame Grabber - Main Stylesheet
   Dark theme, accent (#0BC1FF), Quicksand font
   ========================================================================== */

/* ---------- Design Tokens ---------- */
:root {
    --color-bg: #18181b;
    --color-bg-light: #18181b;
    --color-bg-card: #252428;
    --color-accent: #0BC1FF;
    --color-accent-hover: #09a8e0;
    --color-accent-subtle: rgba(11, 193, 255, 0.1);
    --color-text: #d4d4dc;
    --color-text-muted: #a0a0b4;
    --color-heading: #ffffff;
    --color-border: #333345;
    --color-input-bg: #222230;
    --color-input-border: #444458;
    --color-input-focus: #0BC1FF;
    --color-success: #2ecc71;
    --color-error: #e74c3c;
    --font-family: 'Quicksand', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --max-width: 1140px;
    --header-height: 64px;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --transition: 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-accent-hover);
}

ul {
    list-style: none;
}

/* ---------- Skip Link ---------- */
.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 999;
    padding: 8px 16px;
    background: var(--color-accent);
    color: #fff;
}

.skip-link:focus {
    left: 0;
}

/* ---------- Container ---------- */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ---------- Header / Navigation ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(15, 15, 26, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-heading);
    font-weight: 700;
    font-size: 1.1rem;
    white-space: nowrap;
    flex-shrink: 0;
}

.logo:hover {
    color: var(--color-heading);
}

.logo img {
    width: 36px;
    height: 36px;
    border-radius: 8px;
}

/* Nav Menu */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-menu a {
    display: block;
    padding: 8px 14px;
    color: var(--color-text);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    border-radius: var(--radius);
    transition: color var(--transition), background var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--color-accent);
    background: var(--color-accent-subtle);
}

/* Dropdown */
.has-dropdown {
    position: relative;
}

.dropdown-arrow {
    display: inline-block;
    margin-left: 4px;
    transition: transform var(--transition);
}

.has-dropdown:hover .dropdown-arrow,
.has-dropdown.open .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
    padding: 6px 0;
}

.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    text-transform: none;
    padding: 10px 16px;
    border-radius: 0;
    font-size: 0.9rem;
}

.dropdown-menu a:hover {
    background: var(--color-accent-subtle);
}

/* CTA Button (nav) */
.btn-cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    background: var(--color-accent);
    color: #fff !important;
    font-size: 0.85rem;
    font-weight: 700;
    border-radius: 50px;
    white-space: nowrap;
    flex-shrink: 0;
    transition: background var(--transition), transform var(--transition);
}

.btn-cta:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
}

.nav-cta .apple-icon {
    width: 14px;
    height: 14px;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    -webkit-tap-highlight-color: transparent;
}

.hamburger {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-heading);
    position: relative;
    transition: background var(--transition);
    border-radius: 2px;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-heading);
    border-radius: 2px;
    transition: transform var(--transition);
}

.hamburger::before {
    top: -7px;
}

.hamburger::after {
    bottom: -7px;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger {
    background: transparent;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger::before {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger::after {
    transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero Section ---------- */
.hero {
    padding: 80px 0 60px;
    background: linear-gradient(180deg, var(--color-bg-light) 0%, var(--color-bg) 100%);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-size: 2.75rem;
    font-weight: 700;
    color: var(--color-heading);
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-description {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 32px;
}

.hero-image {
    display: flex;
    justify-content: center;
}

.hero-image img,
.hero-image video {
    max-height: 850px;
    width: auto;    
}

/* ---------- Primary Button ---------- */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: var(--color-accent);
    color: #fff;
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 700;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(11, 193, 255, 0.3);
}

.btn-primary .apple-icon {
    width: 16px;
    height: 16px;
}

/* ---------- Section Title ---------- */
.section-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-heading);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 60px;
}

/* ---------- Features Section ---------- */
.features {
    padding: 80px 0;
}

.feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.feature-row:last-child {
    margin-bottom: 0;
}

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

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

.feature-image {
    display: flex;
    justify-content: center;
}

.feature-image img {
    max-height: 620px;
    width: auto;
    filter: drop-shadow(0 16px 32px rgba(0, 0, 0, 0.3));
    border-radius: var(--radius-lg);
}

.feature-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-heading);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 16px;
}

.feature-content p {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ---------- FAQ Section ---------- */
.faq {
    padding: 80px 0;
    background: var(--color-bg-light);
}

.faq-list {
    max-width: 760px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

.faq-item summary {
    padding: 20px 0;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-heading);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    transition: color var(--transition);
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: '+';
    font-size: 1.4rem;
    font-weight: 300;
    color: var(--color-accent);
    flex-shrink: 0;
    transition: transform var(--transition);
}

.faq-item[open] summary::after {
    content: '-';
}

.faq-item summary:hover {
    color: var(--color-accent);
}

.faq-answer {
    padding: 0 0 20px;
}

.faq-answer p {
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ---------- Page Section (Contact, 404) ---------- */
.page-section {
    padding: 80px 0;
    max-width: 640px;
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-heading);
    margin-bottom: 32px;
}

/* ---------- Contact Form ---------- */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-heading);
}

.optional {
    font-weight: 400;
    color: var(--color-text-muted);
}

.form-group input,
.form-group textarea {
    padding: 12px 16px;
    font-family: var(--font-family);
    font-size: 1rem;
    color: var(--color-heading);
    background: var(--color-input-bg);
    border: 1px solid var(--color-input-border);
    border-radius: var(--radius);
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-input-focus);
    box-shadow: 0 0 0 3px rgba(11, 193, 255, 0.15);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form .btn-primary {
    align-self: flex-start;
    margin-top: 8px;
}

/* ---------- Alerts ---------- */
.alert {
    padding: 14px 20px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 8px;
}

.alert-success {
    background: rgba(46, 204, 113, 0.12);
    color: var(--color-success);
    border: 1px solid rgba(46, 204, 113, 0.25);
}

.alert-error {
    background: rgba(231, 76, 60, 0.12);
    color: var(--color-error);
    border: 1px solid rgba(231, 76, 60, 0.25);
}

/* ---------- Footer ---------- */
.site-footer {
    padding: 48px 0 0;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg);
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Footer grid: 4 columns */
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer-col {}

/* Brand column */
.footer-brand {}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--color-heading);
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 12px;
}

.footer-logo img {
    border-radius: 8px;
}

.footer-tagline {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.5;
    margin-bottom: 16px;
}

.footer-social {
    display: flex;
    gap: 10px;
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    color: var(--color-text-muted);
    background: var(--color-bg-card);
    border-radius: 50%;
    transition: color var(--transition), background var(--transition);
}

.footer-social a:hover {
    color: #fff;
    background: var(--color-accent);
}

/* Link columns */
.footer-heading {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--color-heading);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--color-accent);
}

/* Bottom bar */
.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding: 20px 0;
    text-align: center;
}

.copyright {
    font-size: 0.82rem;
    color: var(--color-text-muted);
}

.copyright a {
    color: var(--color-text-muted);
    text-decoration: none;
}

.copyright a:hover {
    color: var(--color-accent);
}

/* Footer responsive */
@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    .footer-brand {
        grid-column: 1 / -1;
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}

/* ---------- Guides Listing ---------- */
.guides-intro {
    color: var(--color-text-muted);
    font-size: 1.05rem;
    margin-bottom: 40px;
    max-width: 560px;
}

.guides-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.guide-card {
    display: block;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.guide-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
    color: var(--color-text);
}

.guide-card-badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    background: var(--color-accent-subtle);
    padding: 4px 10px;
    border-radius: 50px;
    margin-bottom: 14px;
}

.guide-card-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-heading);
    line-height: 1.35;
    margin-bottom: 10px;
}

.guide-card-desc {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 14px;
}

.guide-card-meta {
    font-size: 0.78rem;
    color: var(--color-text-muted);
}

/* ---------- Guide Article ---------- */

/* Guide Hero */
.guide-hero {
    background: linear-gradient(165deg, #000000 0%, var(--color-bg-light) 40%, #0d1b2a 70%, #1b2838 100%);
    padding: 72px 0 56px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.guide-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at 30% 50%, rgba(11, 193, 255, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 20%, rgba(94, 92, 230, 0.05) 0%, transparent 50%);
    animation: guideDrift 20s ease-in-out infinite alternate;
}

@keyframes guideDrift {
    0% { transform: translate(0, 0) rotate(0deg); }
    100% { transform: translate(-3%, 2%) rotate(1deg); }
}

.guide-hero .container {
    position: relative;
    z-index: 1;
    max-width: 700px;
}

.guide-badge {
    display: inline-block;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.18);
    padding: 6px 16px;
    border-radius: 50px;
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(4px);
}

.guide-hero h1 {
    font-size: clamp(1.8rem, 4.5vw, 2.6rem);
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
    margin-bottom: 16px;
}

.guide-subtitle {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.75);
    font-weight: 400;
    max-width: 540px;
    margin: 0 auto;
    line-height: 1.65;
}

.guide-meta {
    margin-top: 20px;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.meta-dot {
    color: rgba(255, 255, 255, 0.35);
}

/* Guide TOC */
.guide-toc {
    margin-top: 40px;
    margin-bottom: 40px;
    max-width: 740px;
    padding: 24px 24px 24px 32px;
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border-left: 3px solid var(--color-accent);
}

.toc-title {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    margin-bottom: 14px;
}

.guide-toc ol {
    list-style: none;
    counter-reset: toc-counter;
}

.guide-toc li {
    counter-increment: toc-counter;
    margin-bottom: 8px;
}

.guide-toc li::before {
    content: counter(toc-counter, decimal-leading-zero);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    color: var(--color-accent);
    margin-right: 10px;
    font-weight: 500;
}

.guide-toc a {
    color: #c8c8d8;
    font-size: 0.92rem;
    font-weight: 500;
}

.guide-toc a:hover {
    color: var(--color-accent);
}

/* Guide Article Body */
.guide-article {
    max-width: 740px;
    padding-top: 8px;
    padding-bottom: 80px;
    font-size: 1.02rem;
    line-height: 1.72;
}

.guide-article h2 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-heading);
    margin: 56px 0 16px;
    line-height: 1.25;
    scroll-margin-top: 80px;
}

.guide-article h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #e8e8f0;
    margin: 32px 0 8px;
}

.guide-article p {
    margin-bottom: 16px;
    color: #c0c0cc;
}

.guide-article strong {
    color: var(--color-heading);
    font-weight: 600;
}

/* Guide Steps */
.guide-steps {
    list-style: none;
    counter-reset: step-counter;
    margin: 16px 0 24px;
    padding-left: 0;
}

.guide-steps li {
    counter-increment: step-counter;
    position: relative;
    padding-left: 48px;
    margin-bottom: 14px;
    line-height: 1.65;
    color: #c0c0cc;
}

.guide-steps li::before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 2px;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--color-accent);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Guide Screenshots */
.guide-screenshot {
    max-width: 320px;
    margin: 32px auto;
}

.guide-screenshot img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    display: block;
}

.guide-screenshot figcaption {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    text-align: center;
    margin-top: 10px;
    line-height: 1.4;
}

.screenshot-label {
    font-weight: 600;
    color: #d4d4dc;
    margin-bottom: 4px;
}

/* Guide Specs Grid */
.guide-specs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
    margin: 24px 0;
}

.spec-card {
    background: var(--color-bg-card);
    border-radius: 10px;
    padding: 16px 18px;
    border: 1px solid var(--color-border);
}

.spec-label {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.spec-value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-heading);
}

/* Guide Inline Code */
.guide-code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.88em;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--color-accent);
}

/* Guide Tech Breakdown */
.guide-tech-breakdown {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin: 24px 0;
}

.tech-card {
    background: var(--color-bg-card);
    border-radius: 10px;
    padding: 18px 20px;
    border: 1px solid var(--color-border);
}

.tech-card-label {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin-bottom: 6px;
}

.tech-card-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-heading);
    margin-bottom: 4px;
}

.tech-card-detail {
    font-size: 0.86rem;
    color: #c0c0cc;
    line-height: 1.5;
}

/* Guide App Cards */
.guide-app-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin: 24px 0;
}

.app-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: 20px;
    text-align: center;
    border: 1px solid var(--color-border);
    transition: border-color var(--transition);
}

.app-card:hover {
    border-color: var(--color-accent);
}

.app-card-icon {
    font-size: 2.2rem;
    margin-bottom: 8px;
}

.app-card-name {
    font-weight: 700;
    color: var(--color-heading);
    margin-bottom: 4px;
}

.app-card-note {
    font-size: 0.85rem;
    color: #c0c0cc;
    line-height: 1.5;
}

/* Guide Callout Boxes */
.callout {
    padding: 16px 24px;
    border-radius: 10px;
    margin: 24px 0;
    font-size: 0.92rem;
    line-height: 1.65;
    color: #c8c8d8;
}

.callout-title {
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 6px;
}

.callout-warning {
    background: rgba(245, 197, 24, 0.08);
    border-left: 3px solid #f5c518;
}

.callout-warning .callout-title {
    color: #f5c518;
}

.callout-tip {
    background: rgba(52, 199, 89, 0.08);
    border-left: 3px solid #34c759;
}

.callout-tip .callout-title {
    color: #34c759;
}

.callout-info {
    background: var(--color-accent-subtle);
    border-left: 3px solid var(--color-accent);
}

.callout-info .callout-title {
    color: var(--color-accent);
}

.callout-no {
    background: rgba(239, 68, 68, 0.08);
    border-left: 3px solid #ef4444;
}

.callout-no .callout-title {
    color: #ef4444;
}

/* Guide Table */
.guide-table-wrap {
    overflow-x: auto;
    margin: 24px 0;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.guide-table-wrap table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

.guide-table-wrap thead {
    background: var(--color-bg-card);
}

.guide-table-wrap th {
    text-align: left;
    padding: 12px 16px;
    font-weight: 700;
    color: var(--color-heading);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    white-space: nowrap;
}

.guide-table-wrap td {
    padding: 11px 16px;
    border-top: 1px solid var(--color-border);
    white-space: nowrap;
    color: #c0c0cc;
}

.guide-table-wrap tbody tr:hover {
    background: var(--color-accent-subtle);
}

/* Gotcha List */
.gotcha-list {
    list-style: none;
    padding: 0;
    margin: 16px 0;
}

.gotcha-list li {
    padding: 16px 18px 16px 52px;
    margin-bottom: 10px;
    background: var(--color-bg-card);
    border-radius: 10px;
    position: relative;
    font-size: 0.93rem;
    line-height: 1.6;
    border: 1px solid var(--color-border);
    color: #c0c0cc;
}

.gotcha-list li::before {
    content: attr(data-num);
    position: absolute;
    left: 14px;
    top: 16px;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--color-accent);
    background: var(--color-accent-subtle);
    width: 24px;
    height: 24px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Guide Separator */
.guide-sep {
    border: none;
    height: 1px;
    background: var(--color-border);
    margin: 48px 0;
}

/* Guide CTA Section */
.guide-article .cta-section {
    text-align: center;
    padding: 48px 24px;
    margin-top: 48px;
    background: linear-gradient(180deg, var(--color-bg-section, #1a1a2e) 0%, var(--color-bg, #0f0f1a) 100%);
    border-radius: 12px;
}

.guide-article .cta-section h2 {
    margin-bottom: 15px;
}

.guide-article .cta-section p {
    margin-bottom: 30px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.guide-article .cta-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Guide Footer Note */
.guide-footer-note {
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
    font-size: 0.82rem;
    color: var(--color-text-muted);
    text-align: center;
}

/* Fade-in Animation */
.fade-in {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

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

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2.1rem;
    }

    .hero-image img,
    .hero-image video {
        max-height: 520px;
    }

    .feature-row,
    .feature-row--reverse {
        grid-template-columns: 1fr;
        gap: 32px;
        direction: ltr;
        text-align: center;
    }

    .feature-image img {
        max-height: 480px;
    }

    .feature-row {
        margin-bottom: 60px;
    }

    .guide-hero {
        padding: 56px 0 40px;
    }

    .guide-specs {
        grid-template-columns: 1fr 1fr;
    }

    .guide-tech-breakdown {
        grid-template-columns: 1fr 1fr;
    }

    .guide-app-cards {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    /* Mobile Nav */
    .mobile-menu-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        flex-direction: column;
        align-items: stretch;
        background: var(--color-bg);
        padding: 24px;
        gap: 0;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        overflow-y: auto;
        z-index: 99;
    }

    .nav-menu.is-open {
        transform: translateX(0);
    }

    .nav-menu a {
        padding: 14px 0;
        font-size: 1rem;
        border-bottom: 1px solid var(--color-border);
        border-radius: 0;
    }

    .nav-cta {
        display: none;
    }

    .nav-menu .has-dropdown .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        background: transparent;
        padding: 0 0 0 16px;
    }

    .nav-menu .dropdown-menu a {
        border-bottom: 1px solid var(--color-border);
    }

    /* Mobile CTA in menu */
    .nav-menu::after {
        content: '';
    }

    .hero {
        padding: 48px 0 40px;
    }

    .hero-content h1 {
        font-size: 1.75rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.5rem;
        margin-bottom: 40px;
    }

    .features,
    .faq {
        padding: 60px 0;
    }

    .feature-content h3 {
        font-size: 1.25rem;
    }

    .page-section {
        padding: 48px 0;
    }

    .page-title {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .logo span {
        display: none;
    }

    .hero-content h1 {
        font-size: 1.5rem;
    }

    .btn-primary {
        padding: 12px 24px;
        font-size: 0.9rem;
    }

    .guide-hero h1 {
        font-size: 1.5rem;
    }

    .guide-toc {
        padding-left: 20px;
    }

    .guide-steps li {
        padding-left: 42px;
    }

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

    .guide-tech-breakdown {
        grid-template-columns: 1fr;
    }

    .guide-app-cards {
        grid-template-columns: 1fr;
    }
}