/* =============================================================
   Writer's Canvas — リニューアルデザイン 2026
   参考: ja.libreoffice.org
   ============================================================= */

:root {
    --brand:        #0e7c6e;   /* メインブランドカラー */
    --brand-dark:   #0a5f55;
    --brand-light:  #13a891;
    --brand-pale:   #e6f7f5;
    --brand-glass:  rgba(14, 124, 110, 0.82);
    --accent:       #f58f00;   /* ハイライト/ダウンロードボタン */
    --accent-dark:  #d97c00;
    --bg:           #ffffff;
    --bg-alt:       #f9fbfa;
    --bg-dark:      #1a2b29;
    --text:         #1a1a2e;
    --text-muted:   #4a5568;
    --text-light:   #718096;
    --border:       #e2ebe9;
    --border-dark:  #c0d0ce;
    --shadow-sm:    0 2px 8px rgba(0,0,0,.06);
    --shadow-md:    0 8px 30px rgba(0,0,0,.08);
    --shadow-lg:    0 20px 50px rgba(0,0,0,.12);
    --radius-sm:    6px;
    --radius-md:    12px;
    --radius-lg:    24px;
    --font-sans:    'Inter', 'Noto Sans JP', sans-serif;
    --font-serif:   'Shippori Mincho', Georgia, serif;
    --transition:   0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    -webkit-user-drag: none;
    user-select: none;
    pointer-events: none;
}

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

/* ── Security ───────────────────────────── */
* {
    -webkit-user-select: none;
    -moz-user-select: none;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}
input, textarea, code, pre {
    -webkit-user-select: text;
    user-select: text;
}

/* ── Container ──────────────────────────── */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ================================================================
   TOP BAR (Language / small links)
   ================================================================ */
.top-bar {
    background: var(--bg-dark);
    color: rgba(255,255,255,.7);
    font-size: 0.78rem;
    padding: 6px 0;
}
.top-bar .container {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 16px;
}
.top-bar a {
    color: rgba(255,255,255,.65);
    transition: color var(--transition);
}
.top-bar a:hover { color: #fff; }

/* ================================================================
   HEADER / NAV
   ================================================================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--brand-glass);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
}
.site-header.scrolled {
    background: var(--brand);
    box-shadow: 0 4px 24px rgba(0,0,0,.15);
}
.site-header .container {
    display: flex;
    align-items: center;
    gap: 0;
    height: 64px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    flex-shrink: 0;
    margin-right: 40px;
}
.logo img {
    height: 38px;
    pointer-events: none;
    transition: opacity var(--transition);
}
.logo:hover img {
    opacity: 0.8;
}
.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}
.logo-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: .02em;
    font-family: var(--font-serif);
}
.logo-sub {
    font-size: 0.65rem;
    color: rgba(255,255,255,.7);
    letter-spacing: .08em;
    text-transform: uppercase;
}

/* Nav Links */
.nav-links {
    display: flex;
    align-items: center;
    gap: 0;
    flex: 1;
}
.nav-item {
    position: relative;
}
.nav-item > a {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 0 18px;
    height: 64px;
    color: rgba(255,255,255,.92);
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
    transition: background var(--transition), color var(--transition);
    border-bottom: 3px solid transparent;
}
.nav-item > a:hover,
.nav-item > a.active {
    background: rgba(255,255,255,.12);
    color: #fff;
    border-bottom-color: rgba(255,255,255,.8);
}

/* Dropdown */
.nav-item .dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    background: #fff;
    border: 1px solid var(--border);
    border-top: 3px solid var(--brand);
    box-shadow: var(--shadow-md);
    z-index: 200;
}
.nav-item:hover .dropdown { display: block; }
.dropdown a {
    display: block;
    padding: 10px 18px;
    color: var(--text-muted);
    font-size: 0.88rem;
    transition: background var(--transition), color var(--transition);
}
.dropdown a:hover { background: var(--brand-pale); color: var(--brand); }

/* Download button in nav */
.nav-download {
    margin-left: auto !important;
    flex-shrink: 0;
}
.btn-nav-dl {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    background: var(--accent);
    color: #fff !important;
    font-weight: 700;
    font-size: 0.9rem;
    border-radius: var(--radius-sm);
    border-bottom: none !important;
    transition: background var(--transition), transform var(--transition);
}
.btn-nav-dl:hover {
    background: var(--accent-dark) !important;
    transform: translateY(-1px);
}

/* ================================================================
   HERO CAROUSEL
   ================================================================ */
.hero-carousel {
    position: relative;
    overflow: hidden;
    background: #1a2b29;
}
.carousel-track {
    display: flex;
    transition: transform 0.6s cubic-bezier(0.77, 0, 0.175, 1);
}
.hero-slide {
    min-width: 100%;
    position: relative;
    height: 480px;
    display: flex;
    align-items: center;
    overflow: hidden;
}
.hero-slide .container {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    height: 100%;
}
.hero-slide .slide-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
}
.hero-slide .slide-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(10,30,28,.88) 0%, rgba(10,30,28,.55) 60%, transparent 100%);
}
.hero-slide .slide-content {
    position: relative;
    max-width: 600px;
}
.slide-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--brand);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    padding: 5px 14px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
}
.hero-slide h1 {
    font-size: 3.2rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
    margin-bottom: 20px;
    font-family: var(--font-serif);
    letter-spacing: -0.01em;
}
.hero-slide .slide-desc {
    font-size: 1.05rem;
    color: rgba(255,255,255,.8);
    margin-bottom: 32px;
    line-height: 1.7;
}
.trial-note {
    display: inline-block;
    margin-top: 12px;
    padding: 10px 16px;
    background: rgba(245,143,0,.15);
    border-left: 3px solid var(--accent);
    color: rgba(255,255,255,.85);
    font-size: 0.82rem;
    line-height: 1.6;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.trial-note a { color: var(--accent); text-decoration: underline; }

/* Carousel Buttons */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    width: 44px;
    height: 44px;
    background: rgba(255,255,255,.15);
    border: 1px solid rgba(255,255,255,.3);
    border-radius: 50%;
    color: #fff;
    font-size: 1.3rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition);
    -webkit-user-select: none;
    user-select: none;
    pointer-events: all;
}
.carousel-btn:hover { background: rgba(255,255,255,.3); }
.carousel-btn.prev { left: 20px; }
.carousel-btn.next { right: 20px; }

/* Carousel Dots */
.carousel-dots {
    position: absolute;
    bottom: 18px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}
.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,.4);
    cursor: pointer;
    transition: background var(--transition), transform var(--transition);
    pointer-events: all;
}
.carousel-dot.active {
    background: #fff;
    transform: scale(1.2);
}

/* Slide Buttons */
.slide-btns {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}
.btn-slide-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 30px;
    background: var(--accent);
    color: #fff;
    font-weight: 700;
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.btn-slide-primary:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245,143,0,.35);
}
.btn-slide-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 30px;
    background: transparent;
    color: #fff;
    font-weight: 600;
    font-size: 0.95rem;
    border: 1px solid rgba(255,255,255,.5);
    border-radius: var(--radius-sm);
    transition: background var(--transition), border-color var(--transition);
}
.btn-slide-secondary:hover {
    background: rgba(255,255,255,.12);
    border-color: rgba(255,255,255,.9);
}

/* ================================================================
   QUICK FEATURES BAR  (3 cols below hero)
   ================================================================ */
.quick-bar {
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    padding: 50px 0;
}
.quick-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2px;
}
.quick-item {
    background: #fff;
    padding: 36px 32px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin: 4px;
    transition: box-shadow var(--transition), transform var(--transition);
    cursor: default;
}
.quick-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}
.quick-icon {
    width: 60px;
    height: 60px;
    background: var(--brand);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    flex-shrink: 0;
}
.quick-icon svg { width: 28px; height: 28px; }
.quick-item h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1.3;
}
.quick-item p {
    color: var(--text-muted);
    font-size: 0.92rem;
}
.quick-link {
    color: var(--brand) !important;
    font-weight: 600;
    font-size: 0.88rem;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    border-bottom: 1px solid transparent;
    padding-bottom: 1px;
    transition: border-color var(--transition);
    pointer-events: all;
}
.quick-link:hover { border-bottom-color: var(--brand); }

/* ================================================================
   COMMUNITY / CALLOUT BANNER
   ================================================================ */
.community-banner {
    background: linear-gradient(135deg, var(--bg-dark) 0%, #0d3b35 100%);
    padding: 70px 0;
    position: relative;
    overflow: hidden;
}
.community-banner::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -10%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(14,124,110,.25) 0%, transparent 70%);
}
.community-inner {
    display: flex;
    align-items: center;
    gap: 50px;
    position: relative;
}
.community-portrait {
    flex-shrink: 0;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--brand-light);
    box-shadow: 0 0 0 8px rgba(14,124,110,.2);
}
.community-portrait img { width: 100%; height: 100%; object-fit: cover; }
.community-text h2 {
    font-size: 1.9rem;
    color: #fff;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 20px;
}
.btn-community {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: var(--brand-light);
    color: #fff;
    font-weight: 700;
    border-radius: var(--radius-sm);
    transition: background var(--transition), transform var(--transition);
    pointer-events: all;
}
.btn-community:hover {
    background: var(--brand);
    transform: translateY(-2px);
}

/* ================================================================
   NEWS / FEATURES GRID
   ================================================================ */
.news-section {
    padding: 80px 0;
    background: var(--bg);
}
.section-heading {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text);
    border-bottom: 3px solid var(--brand);
    display: inline-block;
    padding-bottom: 8px;
    margin-bottom: 32px;
}
.section-subheading {
    font-size: 0.85rem;
    color: var(--brand);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .1em;
    margin-bottom: 4px;
}
.news-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}
.news-col h2 { margin-bottom: 24px; }
.news-cards { display: flex; flex-direction: column; gap: 1px; }
.news-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 22px 24px;
    margin-bottom: 12px;
    transition: box-shadow var(--transition), border-color var(--transition);
    cursor: default;
}
.news-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--brand-light);
}
.news-card-tag {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--brand);
    background: var(--brand-pale);
    padding: 3px 10px;
    border-radius: 20px;
    margin-bottom: 10px;
}
.news-card-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
    line-height: 1.4;
}
.news-card-title a {
    color: inherit;
    transition: color var(--transition);
    pointer-events: all;
}
.news-card-title a:hover { color: var(--brand); }
.news-card-date {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-bottom: 8px;
}
.news-card-excerpt {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 12px;
}
.news-read-more {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--brand);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    pointer-events: all;
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition);
}
.news-read-more:hover { border-bottom-color: var(--brand); }

/* ================================================================
   FEATURES DETAIL GRID
   ================================================================ */
.features-section {
    padding: 80px 0;
    background: var(--bg-alt);
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    margin-top: 40px;
}
.feature-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 32px 28px;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
    position: relative;
    overflow: hidden;
}
.feature-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--brand);
    transform: scaleX(0);
    transition: transform var(--transition);
}
.feature-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
    border-color: var(--brand-light);
}
.feature-card:hover::after { transform: scaleX(1); }
.feature-icon {
    width: 52px;
    height: 52px;
    background: var(--brand-pale);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--brand);
    flex-shrink: 0;
}
.feature-icon i { width: 26px; height: 26px; }
.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
}
.feature-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.65;
    flex: 1;
}
.feature-more {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--brand);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    opacity: 0;
    transform: translateX(-6px);
    transition: opacity var(--transition), transform var(--transition);
    margin-top: auto;
}
.feature-card:hover .feature-more { opacity: 1; transform: translateX(0); }

/* ================================================================
   DOWNLOAD SECTION
   ================================================================ */
.download-section {
    padding: 80px 0;
    background: var(--bg);
}
.download-box {
    background: linear-gradient(135deg, var(--bg-dark) 0%, #113b35 100%);
    border-radius: var(--radius-lg);
    padding: 60px;
    display: flex;
    gap: 50px;
    align-items: center;
    flex-wrap: wrap;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}
.download-box::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -5%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(19,168,145,.12) 0%, transparent 70%);
}
.download-left { flex: 1; min-width: 280px; position: relative; }
.download-left h2 {
    font-size: 2.4rem;
    color: #fff;
    font-family: var(--font-serif);
    margin-bottom: 14px;
    line-height: 1.2;
}
.download-left p {
    color: rgba(255,255,255,.75);
    margin-bottom: 24px;
    font-size: 1rem;
}
.spec-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.spec-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255,255,255,.8);
    font-size: 0.92rem;
}
.spec-list li i { width: 18px; height: 18px; color: #4ade80; flex-shrink: 0; }
.download-right {
    display: flex;
    flex-direction: column;
    gap: 14px;
    align-items: stretch;
    min-width: 260px;
    position: relative;
}
.btn-download {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 18px 36px;
    background: var(--accent);
    color: #fff;
    font-weight: 700;
    font-size: 1.05rem;
    border-radius: var(--radius-sm);
    text-align: center;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.btn-download:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(245,143,0,.4);
}
.btn-download .btn-sub {
    font-size: 0.75rem;
    font-weight: 400;
    opacity: 0.85;
}
.btn-purchase {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 30px;
    background: transparent;
    color: rgba(255,255,255,.9);
    font-weight: 600;
    font-size: 0.95rem;
    border: 1px solid rgba(255,255,255,.4);
    border-radius: var(--radius-sm);
    transition: background var(--transition), border-color var(--transition);
}
.btn-purchase:hover {
    background: rgba(255,255,255,.08);
    border-color: rgba(255,255,255,.8);
}
.checksum-info {
    font-size: 0.7rem;
    color: rgba(255,255,255,.4);
    line-height: 1.5;
    word-break: break-all;
}
.checksum-label { font-weight: 600; display: block; margin-bottom: 3px; }
.checksum-value {
    font-family: monospace;
    background: rgba(0,0,0,.2);
    padding: 4px 8px;
    border-radius: 4px;
    display: block;
}

/* ================================================================
   FOOTER
   ================================================================ */
footer {
    background: var(--bg-dark);
    color: rgba(255,255,255,.65);
    border-top: 3px solid var(--brand);
}
.footer-top {
    padding: 50px 0 30px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}
.footer-brand .logo-sm {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}
.footer-brand .logo-sm img {
    height: 34px;
}
.footer-brand .logo-sm span {
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
}
.footer-brand p {
    font-size: 0.85rem;
    line-height: 1.7;
    max-width: 260px;
}
.footer-col h4 {
    font-size: 0.85rem;
    font-weight: 700;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: .1em;
    margin-bottom: 16px;
}
.footer-col a {
    display: block;
    font-size: 0.85rem;
    color: rgba(255,255,255,.6);
    margin-bottom: 10px;
    transition: color var(--transition);
    pointer-events: all;
}
.footer-col a:hover { color: #fff; }

/* Social in footer */
.social-btns {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 20px;
}
.social-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 16px;
    background: var(--brand);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: background var(--transition);
    pointer-events: all;
}
.social-btn:hover { background: var(--brand-light); }
.social-btn i { width: 14px; height: 14px; }

.footer-bottom {
    padding: 18px 0;
    border-top: 1px solid rgba(255,255,255,.08);
    font-size: 0.78rem;
    text-align: center;
    color: rgba(255,255,255,.35);
}
.footer-bottom a {
    color: rgba(255,255,255,.5);
    margin: 0 8px;
    pointer-events: all;
    transition: color var(--transition);
}
.footer-bottom a:hover { color: #fff; }

/* ================================================================
   SUB-PAGES (Features, License, etc.)
   ================================================================ */
.sub-page body { background: var(--bg); }

.sub-header-bar {
    background: var(--bg-dark);
    padding: 80px 0 50px;
}
.sub-header-bar h1 {
    font-size: 2.6rem;
    color: #fff;
    font-family: var(--font-serif);
    margin-bottom: 12px;
}
.sub-header-bar p {
    color: rgba(255,255,255,.7);
    font-size: 1.05rem;
}
.page-content {
    padding: 60px 0 100px;
}

/* Content Grid (2-col) */
.content-grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}
.text-block h3 {
    font-size: 1.6rem;
    color: var(--brand);
    margin: 36px 0 16px;
    font-family: var(--font-serif);
}
.text-block p {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.75;
    margin-bottom: 18px;
}
.future-note {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--brand);
    opacity: 0.85;
    margin-top: 24px;
}
.future-note::before { content: "※"; }

/* Image Block with animation */
.image-block {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--text);
    box-shadow: var(--shadow-lg);
    aspect-ratio: 16/10;
}
.image-block .scrolling-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.image-block .mask-container {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 2;
}
.image-block .scanlines {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(18,16,16,0) 50%, rgba(0,0,0,.15) 50%);
    background-size: 100% 4px;
}
.image-block .interlace-mask {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(rgba(0,0,0,0) 30%, rgba(0,0,0,.3) 100%),
        repeating-linear-gradient(0deg, rgba(0,0,0,.1) 0px, transparent 1px, transparent 2px),
        repeating-linear-gradient(90deg, rgba(0,0,0,.1) 0px, transparent 1px, transparent 2px);
    background-size: 100% 100%, 3px 3px, 3px 3px;
}

/* Nav arrows (sub pages) */
.nav-arrow {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    font-size: 6rem;
    font-weight: 100;
    color: rgba(0,0,0,.12);
    text-decoration: none;
    z-index: 1100;
    padding: 0 30px;
    cursor: pointer;
    transition: color var(--transition);
    line-height: 1;
    -webkit-user-select: none;
    user-select: none;
    pointer-events: all;
}
.nav-arrow:hover { color: rgba(0,0,0,.4); }
.nav-arrow.prev { left: 0; }
.nav-arrow.next { right: 0; }

/* Page slide system */
body.sub-page {
    overflow-x: hidden;
    overflow-y: auto;
}
.page-slide-wrapper {
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: transform 0.6s cubic-bezier(0.77, 0, 0.175, 1), opacity 0.6s ease;
    opacity: 1;
    will-change: transform, opacity;
    overflow: hidden;
}
.page-slide-wrapper > main { flex: 1 0 auto; }
.page-slide-wrapper > footer { flex-shrink: 0; }
.entry-right  { transform: translateX(100%); opacity: 0; }
.entry-left   { transform: translateX(-100%); opacity: 0; }
.exit-left    { transform: translateX(-100%); opacity: 0; }
.exit-right   { transform: translateX(100%); opacity: 0; }
.slide-active { transform: translateX(0); opacity: 1; }

/* ================================================================
   SHARED UTILITIES
   ================================================================ */
.lead {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 720px;
    line-height: 1.8;
    margin: 20px 0 50px;
}

/* Fade-in animation */
.fade-in-up {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}
.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }
.delay-400 { transition-delay: 0.4s; }
.delay-500 { transition-delay: 0.5s; }
.delay-600 { transition-delay: 0.6s; }
.delay-700 { transition-delay: 0.7s; }

/* Caution Banner */
.caution-banner {
    background: #fff8f8;
    border: 2px solid #ff4d4f;
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 30px;
    display: flex;
    gap: 20px;
    align-items: center;
    box-shadow: 0 4px 12px rgba(255, 77, 79, 0.1);
}
.caution-icon {
    width: 48px;
    height: 48px;
    background: #ff4d4f;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.caution-content h4 {
    color: #cf1322;
    margin-bottom: 4px;
    font-size: 1.1rem;
    font-weight: 700;
}
.caution-content p {
    color: #4a5568;
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

/* Premium Enhancements */
.premium-card {
    transition: transform var(--transition), box-shadow var(--transition);
}
.premium-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}


/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 1024px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .quick-grid  { grid-template-columns: repeat(3, 1fr); }
    .nav-arrow   { font-size: 4rem; padding: 0 15px; }
}

@media (max-width: 768px) {
    .hero-slide { height: 400px; }
    .hero-slide h1 { font-size: 1.8rem; }
    .hero-slide .slide-content { padding: 0 30px; }

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

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

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

    .download-box {
        flex-direction: column;
        padding: 40px 28px;
        text-align: center;
    }
    .download-left { min-width: unset; }
    .download-right { min-width: unset; width: 100%; }
    .spec-list { align-items: center; }

    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1/-1; }

    .nav-links { display: none; }

    .community-inner { flex-direction: column; text-align: center; }
    .community-text h2 { font-size: 1.5rem; }

    .nav-arrow { display: none; }
}

@media (max-width: 480px) {
    .footer-grid { grid-template-columns: 1fr; }
    .slide-btns { flex-direction: column; }
}

/* AI Visual page */
.ai-visual-section { background: var(--bg-alt); }