/* ===== Solar Pulse Theme — Google Chrome Download Site ===== */
/* Colors: White base + Electric Blue #1d4ed8 + Vivid Green #15803d + Amber #d97706 */
:root {
  --blue: #1d4ed8;
  --blue-light: #3b82f6;
  --blue-dark: #1e3a8a;
  --green: #15803d;
  --green-light: #22c55e;
  --amber: #d97706;
  --amber-light: #fbbf24;
  --red: #dc2626;
  --bg: #ffffff;
  --bg-alt: #f8faff;
  --bg-alt2: #f0fdf4;
  --bg-dark: #0f172a;
  --bg-dark2: #1e293b;
  --text: #0f172a;
  --text-muted: #475569;
  --text-light: #94a3b8;
  --border: #e2e8f0;
  --border-blue: #bfdbfe;
  --shadow: 0 4px 24px rgba(29,78,216,0.10);
  --shadow-lg: 0 8px 40px rgba(29,78,216,0.15);
  --radius: 12px;
  --radius-lg: 20px;
  --radius-full: 999px;
}

@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes fadeUp { from { opacity:0; transform:translateY(24px); } to { opacity:1; transform:translateY(0); } }
@keyframes pulse { 0%,100%{opacity:1;} 50%{opacity:0.6;} }
@keyframes shimmer { 0%{background-position:200% center;} 100%{background-position:-200% center;} }
@keyframes float { 0%,100%{transform:translateY(0);} 50%{transform:translateY(-10px);} }
@keyframes slidein { from{opacity:0;transform:translateX(-20px);} to{opacity:1;transform:translateX(0);} }

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif; color: var(--text); background: var(--bg); line-height: 1.6; }
img { max-width: 100%; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { list-style: none; }

/* ===== Reveal Animation ===== */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== Layout ===== */
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.sec { padding: 80px 0; }
.sec-sm { padding: 48px 0; }
.sec-alt { background: var(--bg-alt); }
.sec-alt2 { background: var(--bg-alt2); }
.sec-dark { background: var(--bg-dark); color: #fff; }
.sec-dark2 { background: var(--bg-dark2); color: #fff; }
.sec-blue { background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue) 100%); color: #fff; }

/* ===== Section Head ===== */
.sec-head { text-align: center; margin-bottom: 48px; }
.sec-head .eyebrow { display: inline-flex; align-items: center; gap: 6px; font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--blue); background: #eff6ff; padding: 4px 14px; border-radius: var(--radius-full); margin-bottom: 12px; }
.sec-head .eyebrow.green { color: var(--green); background: #f0fdf4; }
.sec-head .eyebrow.amber { color: var(--amber); background: #fffbeb; }
.sec-head h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 800; color: var(--text); line-height: 1.2; margin-bottom: 12px; }
.sec-head h2 .hl { color: var(--blue); }
.sec-head h2 .hl-green { color: var(--green); }
.sec-head p { font-size: 1.1rem; color: var(--text-muted); max-width: 600px; margin: 0 auto; }
.sec-dark .sec-head h2, .sec-dark2 .sec-head h2 { color: #fff; }
.sec-dark .sec-head p, .sec-dark2 .sec-head p { color: #94a3b8; }

/* ===== Navbar ===== */
.site-nav { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,0.95); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.nav-logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.1rem; color: var(--text); }
.nav-logo-icon { width: 36px; height: 36px; }
.nav-logo-name { color: var(--text); }
.nav-logo-name span { color: var(--blue); }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-link { font-size: 0.9rem; font-weight: 600; color: var(--text-muted); padding: 6px 16px; border-radius: var(--radius-full); transition: all 0.2s; }
.nav-link:hover { color: var(--blue); background: #eff6ff; text-decoration: none; }
.nav-link.active { color: #fff; background: var(--blue); }
.nav-dl { display: inline-flex; align-items: center; gap: 8px; background: var(--blue); color: #fff; font-size: 0.875rem; font-weight: 700; padding: 8px 20px; border-radius: var(--radius-full); border: none; cursor: pointer; transition: all 0.2s; }
.nav-dl:hover { background: var(--blue-dark); transform: translateY(-1px); }
.nav-toggle { display: none; background: none; border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px; cursor: pointer; }
.nav-mobile { display: none; background: #fff; border-top: 1px solid var(--border); padding: 12px 24px; }
.nav-mobile.show { display: block; }
.nav-mobile .nav-link { display: block; padding: 10px 0; border-radius: 0; border-bottom: 1px solid var(--border); }
.nav-mobile .nav-dl { display: inline-flex; margin-top: 12px; }

/* ===== Buttons ===== */
.btn { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; border-radius: var(--radius-full); border: none; cursor: pointer; transition: all 0.2s; text-decoration: none; }
.btn-lg { font-size: 1rem; padding: 14px 32px; }
.btn-md { font-size: 0.9rem; padding: 10px 24px; }
.btn-sm { font-size: 0.8rem; padding: 7px 18px; }
.btn-blue { background: var(--blue); color: #fff; }
.btn-blue:hover { background: var(--blue-dark); transform: translateY(-2px); box-shadow: var(--shadow-lg); color: #fff; }
.btn-green { background: var(--green); color: #fff; }
.btn-green:hover { background: #166534; transform: translateY(-2px); color: #fff; }
.btn-amber { background: var(--amber); color: #fff; }
.btn-amber:hover { background: #b45309; transform: translateY(-2px); color: #fff; }
.btn-outline { background: transparent; color: var(--blue); border: 2px solid var(--blue); }
.btn-outline:hover { background: var(--blue); color: #fff; }
.btn-outline-w { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.5); }
.btn-outline-w:hover { background: rgba(255,255,255,0.1); color: #fff; }
.btn-white { background: #fff; color: var(--blue); }
.btn-white:hover { background: #f0f9ff; color: var(--blue-dark); }
.btn-ghost { background: transparent; color: var(--text-muted); }
.btn-ghost:hover { background: var(--bg-alt); color: var(--text); }
.btn:disabled { opacity: 0.7; cursor: not-allowed; transform: none !important; }

/* ===== Hero ===== */
.hero { background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #1d4ed8 100%); color: #fff; padding: 100px 0 80px; position: relative; overflow: hidden; }
.hero::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse 60% 80% at 70% 50%, rgba(59,130,246,0.25) 0%, transparent 70%); pointer-events: none; }
.hero::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 80px; background: linear-gradient(to bottom, transparent, #fff); pointer-events: none; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; position: relative; z-index: 1; }
.hero-eyebrow { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.12); backdrop-filter: blur(8px); border: 1px solid rgba(255,255,255,0.2); color: #fff; font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; padding: 6px 16px; border-radius: var(--radius-full); margin-bottom: 20px; }
.hero-eyebrow-dot { width: 6px; height: 6px; background: var(--green-light); border-radius: 50%; animation: pulse 2s ease-in-out infinite; }
.hero h1 { font-size: clamp(2rem, 4vw, 3.2rem); font-weight: 900; line-height: 1.15; margin-bottom: 20px; }
.hero h1 .hl { background: linear-gradient(90deg, #60a5fa, #34d399); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero-desc { font-size: 1.1rem; color: rgba(255,255,255,0.8); margin-bottom: 32px; line-height: 1.7; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 24px; }
.hero-trust-item { display: flex; align-items: center; gap: 6px; font-size: 0.8rem; color: rgba(255,255,255,0.65); }
.hero-trust-item svg { color: var(--green-light); flex-shrink: 0; }

/* Hero Visual */
.hero-visual { display: flex; justify-content: center; align-items: center; }
.hero-browser { background: rgba(255,255,255,0.06); backdrop-filter: blur(16px); border: 1px solid rgba(255,255,255,0.15); border-radius: var(--radius-lg); overflow: hidden; width: 100%; max-width: 480px; box-shadow: 0 20px 60px rgba(0,0,0,0.4); animation: float 5s ease-in-out infinite; }
.hbr-topbar { background: rgba(255,255,255,0.08); padding: 10px 16px; display: flex; align-items: center; gap: 10px; }
.hbr-dots { display: flex; gap: 5px; }
.hbr-dot { width: 10px; height: 10px; border-radius: 50%; }
.hbr-dot.r { background: #ef4444; }
.hbr-dot.y { background: #f59e0b; }
.hbr-dot.g { background: #22c55e; }
.hbr-url { flex: 1; background: rgba(255,255,255,0.1); border-radius: var(--radius-full); height: 24px; padding: 0 12px; display: flex; align-items: center; font-size: 0.7rem; color: rgba(255,255,255,0.5); }
.hbr-body { padding: 20px; }
.hbr-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.hbr-card { background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius); padding: 14px; }
.hbr-card-icon { width: 28px; height: 28px; margin-bottom: 8px; }
.hbr-card-label { font-size: 0.65rem; color: rgba(255,255,255,0.5); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 3px; }
.hbr-card-val { font-size: 1.1rem; font-weight: 800; color: #fff; }
.hbr-card-val.blue { color: #60a5fa; }
.hbr-card-val.green { color: #34d399; }
.hbr-card-val.amber { color: #fbbf24; }
.hbr-card-val.red { color: #f87171; }

/* ===== Stats Band ===== */
.stats-band { background: #fff; border-top: 3px solid var(--blue); border-bottom: 3px solid var(--border); padding: 40px 0; }
.stats-band-inner { display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; text-align: center; }
.sband-item { padding: 0 16px; border-right: 1px solid var(--border); }
.sband-item:last-child { border-right: none; }
.sband-num { font-size: 2rem; font-weight: 900; line-height: 1; margin-bottom: 6px; }
.sband-num.blue { color: var(--blue); }
.sband-num.green { color: var(--green); }
.sband-num.amber { color: var(--amber); }
.sband-num.red { color: var(--red); }
.sband-lbl { font-size: 0.8rem; color: var(--text-muted); font-weight: 600; }

/* ===== Feature Cards ===== */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feat-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; transition: all 0.3s; position: relative; overflow: hidden; }
.feat-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--blue); transform: scaleX(0); transform-origin: left; transition: transform 0.3s; }
.feat-card:hover::before { transform: scaleX(1); }
.feat-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: var(--border-blue); }
.feat-card.fc-green::before { background: var(--green); }
.feat-card.fc-amber::before { background: var(--amber); }
.feat-card.fc-red::before { background: var(--red); }
.feat-card.fc-teal::before { background: #0d9488; }
.feat-card.fc-violet::before { background: #7c3aed; }
.feat-icon { width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.fi-blue { background: #eff6ff; color: var(--blue); }
.fi-green { background: #f0fdf4; color: var(--green); }
.fi-amber { background: #fffbeb; color: var(--amber); }
.fi-red { background: #fef2f2; color: var(--red); }
.fi-teal { background: #f0fdfa; color: #0d9488; }
.fi-violet { background: #f5f3ff; color: #7c3aed; }
.feat-title { font-size: 1rem; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.feat-desc { font-size: 0.875rem; color: var(--text-muted); line-height: 1.65; }

/* ===== Deep Feature Rows ===== */
.deep-row { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; padding: 60px 0; border-bottom: 1px solid var(--border); }
.deep-row:last-child { border-bottom: none; }
.deep-row.flip .deep-info { order: 2; }
.deep-row.flip .deep-visual { order: 1; }
.deep-badge { display: inline-flex; align-items: center; gap: 6px; font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; padding: 4px 12px; border-radius: var(--radius-full); margin-bottom: 14px; }
.db-blue { background: #eff6ff; color: var(--blue); }
.db-green { background: #f0fdf4; color: var(--green); }
.db-amber { background: #fffbeb; color: var(--amber); }
.db-red { background: #fef2f2; color: var(--red); }
.deep-info h3 { font-size: 1.6rem; font-weight: 800; margin-bottom: 12px; color: var(--text); }
.deep-info p { font-size: 0.95rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.deep-list { display: flex; flex-direction: column; gap: 8px; }
.deep-list-item { display: flex; align-items: flex-start; gap: 10px; font-size: 0.9rem; color: var(--text-muted); }
.deep-list-dot { width: 18px; height: 18px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 2px; }
.dld-blue { background: #eff6ff; color: var(--blue); }
.dld-green { background: #f0fdf4; color: var(--green); }
.dld-amber { background: #fffbeb; color: var(--amber); }

/* Deep Visual Panel */
.deep-visual { background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; }
.dv-panel-title { font-size: 0.75rem; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 18px; }
.dv-bar-row { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.dv-bar-label { font-size: 0.75rem; color: var(--text-muted); width: 80px; flex-shrink: 0; }
.dv-bar-track { flex: 1; height: 8px; background: var(--border); border-radius: 4px; overflow: hidden; }
.dv-bar-fill { height: 100%; border-radius: 4px; transition: width 1s ease; }
.dvf-blue { background: var(--blue); }
.dvf-green { background: var(--green); }
.dvf-amber { background: var(--amber); }
.dvf-red { background: var(--red); }
.dv-bar-val { font-size: 0.75rem; font-weight: 700; color: var(--text); width: 36px; text-align: right; flex-shrink: 0; }
.dv-stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 20px; }
.dv-stat { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; }
.dv-stat-num { font-size: 1.25rem; font-weight: 800; line-height: 1; margin-bottom: 4px; }
.dv-stat-num.c-blue { color: var(--blue); }
.dv-stat-num.c-green { color: var(--green); }
.dv-stat-num.c-amber { color: var(--amber); }
.dv-stat-lbl { font-size: 0.7rem; color: var(--text-muted); }

/* ===== Platform Cards ===== */
.plat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.plat-card { background: #fff; border: 2px solid var(--border); border-radius: var(--radius-lg); padding: 24px 20px; text-align: center; transition: all 0.3s; position: relative; }
.plat-card:hover { border-color: var(--blue); box-shadow: var(--shadow); transform: translateY(-3px); }
.plat-card.featured { border-color: var(--blue); background: linear-gradient(135deg, #eff6ff, #dbeafe); }
.plat-badge { position: absolute; top: -10px; left: 50%; transform: translateX(-50%); background: var(--blue); color: #fff; font-size: 0.65rem; font-weight: 700; padding: 3px 12px; border-radius: var(--radius-full); white-space: nowrap; }
.plat-icon { width: 48px; height: 48px; margin: 0 auto 14px; }
.plat-name { font-size: 1rem; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.plat-ver { font-size: 0.75rem; color: var(--text-muted); margin-bottom: 16px; }
.plat-desc { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 16px; line-height: 1.5; }
.plat-btn { width: 100%; padding: 10px; font-size: 0.85rem; font-weight: 700; border-radius: var(--radius-full); border: none; cursor: pointer; transition: all 0.2s; }
.plat-btn.primary { background: var(--blue); color: #fff; }
.plat-btn.primary:hover { background: var(--blue-dark); }
.plat-btn.secondary { background: var(--bg-alt); color: var(--text); border: 1px solid var(--border); }
.plat-btn.secondary:hover { background: var(--border); }

/* ===== Reviews ===== */
.rev-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.rev-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 24px; transition: box-shadow 0.3s; }
.rev-card:hover { box-shadow: var(--shadow); }
.rev-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.rev-avatar { width: 44px; height: 44px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1rem; font-weight: 800; color: #fff; flex-shrink: 0; }
.av-blue { background: linear-gradient(135deg, #2563eb, #3b82f6); }
.av-green { background: linear-gradient(135deg, #15803d, #22c55e); }
.av-amber { background: linear-gradient(135deg, #d97706, #fbbf24); }
.av-red { background: linear-gradient(135deg, #dc2626, #ef4444); }
.av-violet { background: linear-gradient(135deg, #7c3aed, #a78bfa); }
.av-teal { background: linear-gradient(135deg, #0d9488, #2dd4bf); }
.rev-name { font-size: 0.875rem; font-weight: 700; color: var(--text); }
.rev-role { font-size: 0.75rem; color: var(--text-muted); }
.rev-stars { display: flex; gap: 2px; margin-bottom: 10px; }
.rev-stars svg { color: var(--amber); }
.rev-text { font-size: 0.875rem; color: var(--text-muted); line-height: 1.65; }

/* ===== Comparison Table ===== */
.cmp-wrap { overflow-x: auto; }
.cmp-table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.cmp-table th { background: var(--bg-alt); padding: 14px 16px; font-weight: 700; text-align: center; border-bottom: 2px solid var(--border); color: var(--text); white-space: nowrap; }
.cmp-table th:first-child { text-align: left; }
.cmp-table td { padding: 12px 16px; border-bottom: 1px solid var(--border); text-align: center; color: var(--text-muted); }
.cmp-table td:first-child { text-align: left; font-weight: 600; color: var(--text); }
.cmp-table tr:hover td { background: #f8faff; }
.cmp-hl th:nth-child(2) { background: linear-gradient(135deg, var(--blue), var(--blue-dark)); color: #fff; border-radius: 0; }
.cmp-hl td:nth-child(2) { background: #eff6ff; font-weight: 600; color: var(--blue); }
.yes { color: var(--green); font-weight: 700; }
.no { color: var(--red); }
.part { color: var(--amber); }

/* ===== FAQ ===== */
.faq-list { display: flex; flex-direction: column; gap: 10px; }
.faq-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: border-color 0.2s; }
.faq-item.open { border-color: var(--blue); }
.faq-question { display: flex; align-items: center; justify-content: space-between; padding: 18px 22px; cursor: pointer; font-weight: 700; font-size: 0.95rem; color: var(--text); background: none; border: none; width: 100%; text-align: left; gap: 12px; }
.faq-question:hover { color: var(--blue); }
.faq-chevron { width: 20px; height: 20px; color: var(--text-muted); flex-shrink: 0; transition: transform 0.3s; }
.faq-item.open .faq-chevron { transform: rotate(180deg); color: var(--blue); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-item.open .faq-answer { max-height: 400px; }
.faq-answer-inner { padding: 0 22px 18px; font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; }
.faq-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

/* ===== CTA Banner ===== */
.cta-banner { background: linear-gradient(135deg, var(--blue-dark), var(--blue)); color: #fff; padding: 80px 0; text-align: center; }
.cta-eyebrow { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: rgba(255,255,255,0.65); margin-bottom: 12px; }
.cta-title { font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 900; margin-bottom: 14px; }
.cta-title .hl { color: #60a5fa; }
.cta-desc { font-size: 1rem; color: rgba(255,255,255,0.75); max-width: 520px; margin: 0 auto 32px; line-height: 1.6; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ===== Download Hero ===== */
.dl-hero { background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 60%, #1d4ed8 100%); color: #fff; padding: 80px 0; text-align: center; position: relative; overflow: hidden; }
.dl-hero::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 60px; background: linear-gradient(to bottom, transparent, #fff); }
.dl-hero-chip { display: inline-flex; align-items: center; gap: 7px; background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.2); color: rgba(255,255,255,0.9); font-size: 0.75rem; font-weight: 700; padding: 5px 14px; border-radius: var(--radius-full); margin-bottom: 16px; text-transform: uppercase; letter-spacing: 0.06em; }
.dl-hero-title { font-size: clamp(2rem, 4vw, 3rem); font-weight: 900; margin-bottom: 12px; }
.dl-hero-sub { font-size: 1rem; color: rgba(255,255,255,0.7); max-width: 560px; margin: 0 auto; line-height: 1.6; }

/* ===== Download Main Card ===== */
.dl-main-wrap { padding: 60px 0; }
.dl-main-card { background: #fff; border: 2px solid var(--blue); border-radius: var(--radius-lg); overflow: hidden; max-width: 720px; margin: 0 auto; box-shadow: var(--shadow-lg); }
.dl-main-top { background: linear-gradient(90deg, var(--blue-dark), var(--blue)); padding: 20px 28px; display: flex; align-items: center; gap: 16px; }
.dl-main-icon { width: 52px; height: 52px; }
.dl-main-info .dl-main-name { font-size: 1.3rem; font-weight: 800; color: #fff; margin-bottom: 2px; }
.dl-main-info .dl-main-meta { font-size: 0.8rem; color: rgba(255,255,255,0.7); }
.dl-main-body { padding: 28px; }
.dl-specs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 24px; }
.dl-spec { background: var(--bg-alt); border-radius: var(--radius); padding: 12px 14px; }
.dl-spec-label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); font-weight: 600; margin-bottom: 4px; }
.dl-spec-val { font-size: 0.9rem; font-weight: 700; color: var(--text); }
.dl-sec-badge { display: flex; align-items: center; gap: 8px; background: #f0fdf4; border: 1px solid #bbf7d0; border-radius: var(--radius); padding: 10px 14px; margin-bottom: 20px; font-size: 0.8rem; color: var(--green); font-weight: 600; }
.dl-main-btns { display: flex; gap: 12px; }
.dl-main-btns .btn { flex: 1; justify-content: center; }

/* ===== Other Platforms ===== */
.op-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; max-width: 900px; margin: 0 auto; }
.op-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 24px; }
.op-icon { width: 44px; height: 44px; margin-bottom: 12px; }
.op-name { font-size: 1rem; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.op-ver { font-size: 0.75rem; color: var(--text-muted); margin-bottom: 12px; }
.op-steps { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--border); }
.op-step { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 8px; font-size: 0.8rem; color: var(--text-muted); }
.op-step-n { width: 20px; height: 20px; background: var(--blue); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.65rem; font-weight: 800; flex-shrink: 0; margin-top: 1px; }

/* ===== Install Guide ===== */
.guide-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.guide-col-title { font-size: 1.1rem; font-weight: 800; color: var(--text); margin-bottom: 20px; display: flex; align-items: center; gap: 8px; }
.guide-col-dot { width: 8px; height: 8px; border-radius: 50%; }
.gcd-blue { background: var(--blue); }
.gcd-green { background: var(--green); }
.guide-steps { display: flex; flex-direction: column; gap: 16px; }
.gstep { display: flex; gap: 14px; }
.gstep-num { width: 32px; height: 32px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.85rem; font-weight: 800; color: #fff; flex-shrink: 0; }
.gn-blue { background: var(--blue); }
.gn-green { background: var(--green); }
.gstep-body .gstep-title { font-size: 0.9rem; font-weight: 700; color: var(--text); margin-bottom: 3px; }
.gstep-body .gstep-desc { font-size: 0.8rem; color: var(--text-muted); line-height: 1.5; }

/* ===== System Requirements ===== */
.req-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.req-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.req-icon { width: 36px; height: 36px; background: #eff6ff; border-radius: 10px; display: flex; align-items: center; justify-content: center; color: var(--blue); margin-bottom: 12px; }
.req-title { font-size: 0.85rem; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.req-val { font-size: 0.8rem; color: var(--text-muted); line-height: 1.5; }

/* ===== Version Timeline ===== */
.ver-list { display: flex; flex-direction: column; gap: 0; }
.ver-item { display: flex; gap: 20px; }
.ver-dot-col { display: flex; flex-direction: column; align-items: center; }
.ver-dot { width: 14px; height: 14px; border-radius: 50%; flex-shrink: 0; margin-top: 5px; }
.vd-blue { background: var(--blue); }
.vd-green { background: var(--green); }
.vd-amber { background: var(--amber); }
.vd-red { background: var(--red); }
.vd-violet { background: #7c3aed; }
.ver-line { width: 2px; flex: 1; background: var(--border); margin: 4px auto 0; }
.ver-item:last-child .ver-line { display: none; }
.ver-body { padding-bottom: 24px; flex: 1; }
.ver-head { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.ver-num { font-size: 0.95rem; font-weight: 800; color: var(--text); }
.ver-tag { font-size: 0.65rem; font-weight: 700; padding: 2px 8px; border-radius: var(--radius-full); }
.vt-stable { background: #f0fdf4; color: var(--green); }
.vt-lts { background: #eff6ff; color: var(--blue); }
.vt-beta { background: #fffbeb; color: var(--amber); }
.ver-date { font-size: 0.75rem; color: var(--text-light); margin-bottom: 4px; }
.ver-desc { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; }

/* ===== Security Banner ===== */
.sec-banner { display: flex; align-items: center; gap: 16px; background: #f0fdf4; border: 1px solid #bbf7d0; border-radius: var(--radius); padding: 20px 24px; }
.sec-banner-ico { width: 40px; height: 40px; background: #dcfce7; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--green); flex-shrink: 0; }
.sec-banner-text .sec-banner-title { font-size: 0.95rem; font-weight: 700; color: var(--green); margin-bottom: 3px; }
.sec-banner-text .sec-banner-desc { font-size: 0.8rem; color: #166534; }

/* ===== Article Hero (zh-cn) ===== */
.art-hero { background: linear-gradient(135deg, #0f172a, #1e3a8a); color: #fff; padding: 70px 0; }
.art-hero-crumb { font-size: 0.75rem; color: rgba(255,255,255,0.5); margin-bottom: 12px; display: flex; align-items: center; gap: 6px; }
.art-hero-crumb a { color: rgba(255,255,255,0.5); }
.art-hero-crumb a:hover { color: #fff; text-decoration: none; }
.art-hero-title { font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 900; margin-bottom: 12px; }
.art-hero-sub { font-size: 1rem; color: rgba(255,255,255,0.7); max-width: 600px; line-height: 1.6; }
.kw-strip { display: flex; flex-wrap: wrap; gap: 8px; margin: 20px 0; }
.kw { font-size: 0.75rem; background: rgba(255,255,255,0.1); color: rgba(255,255,255,0.8); border: 1px solid rgba(255,255,255,0.2); padding: 4px 12px; border-radius: var(--radius-full); }

/* ===== Article Layout ===== */
.art-layout { display: grid; grid-template-columns: 1fr 320px; gap: 40px; }
.art-body { min-width: 0; }
.art-body h2 { font-size: 1.4rem; font-weight: 800; color: var(--text); margin: 32px 0 12px; padding-bottom: 8px; border-bottom: 2px solid var(--border-blue); }
.art-body h2:first-child { margin-top: 0; }
.art-body h3 { font-size: 1.1rem; font-weight: 700; color: var(--text); margin: 20px 0 8px; }
.art-body p { font-size: 0.95rem; color: var(--text-muted); line-height: 1.75; margin-bottom: 14px; }
.art-body ul, .art-body ol { padding-left: 0; margin-bottom: 14px; }
.art-body ul li { display: flex; align-items: flex-start; gap: 8px; font-size: 0.9rem; color: var(--text-muted); margin-bottom: 8px; line-height: 1.6; }
.art-body ul li::before { content: ''; width: 6px; height: 6px; background: var(--blue); border-radius: 50%; margin-top: 8px; flex-shrink: 0; }
.art-body ol { counter-reset: ol-counter; }
.art-body ol li { display: flex; align-items: flex-start; gap: 10px; font-size: 0.9rem; color: var(--text-muted); margin-bottom: 10px; line-height: 1.6; counter-increment: ol-counter; }
.art-body ol li::before { content: counter(ol-counter); min-width: 22px; height: 22px; background: var(--blue); color: #fff; border-radius: 50%; font-size: 0.7rem; font-weight: 800; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 2px; }

/* Inline CTA */
.inline-cta { border-radius: var(--radius-lg); padding: 20px 24px; margin: 28px 0; background: #eff6ff; border: 1px solid var(--border-blue); display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.inline-cta-body { flex: 1; min-width: 200px; }
.ic-blue { background: #eff6ff; border: 1px solid var(--border-blue); }
.ic-green { background: #f0fdf4; border: 1px solid #bbf7d0; }
.ic-amber { background: #fffbeb; border: 1px solid #fed7aa; }
.inline-cta-title { font-size: 1rem; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.inline-cta-desc { font-size: 0.875rem; color: var(--text-muted); }

/* Tips Grid */
.tips-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin: 16px 0; }
.tip-card { background: var(--bg-alt); border-radius: var(--radius); padding: 16px; border-left: 3px solid var(--blue); }
.tip-num { font-size: 0.65rem; font-weight: 800; color: var(--blue); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 5px; }
.tip-title { font-size: 0.9rem; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.tip-desc { font-size: 0.8rem; color: var(--text-muted); line-height: 1.5; }

/* Sidebar */
.sidebar { display: flex; flex-direction: column; gap: 20px; }
.sbox { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 20px; }
.sbox-title { font-size: 0.85rem; font-weight: 800; color: var(--text); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 2px solid var(--border); }
.sdl-btn { display: flex; align-items: center; gap: 10px; width: 100%; border: none; border-radius: var(--radius); padding: 10px 14px; cursor: pointer; font-size: 0.85rem; font-weight: 700; transition: all 0.2s; margin-bottom: 8px; text-align: left; }
.sdl-btn.primary { background: var(--blue); color: #fff; }
.sdl-btn.primary:hover { background: var(--blue-dark); }
.sdl-btn.secondary { background: var(--bg-alt); color: var(--text); border: 1px solid var(--border); }
.sdl-btn.secondary:hover { border-color: var(--blue); color: var(--blue); }
.sdl-btn-icon { width: 28px; height: 28px; flex-shrink: 0; }
.sdl-btn-info { display: flex; flex-direction: column; }
.sdl-btn-name { font-weight: 700; }
.sdl-btn-ver { font-size: 0.7rem; font-weight: 400; opacity: 0.75; }
.stoc { display: flex; flex-direction: column; gap: 6px; }
.stoc a { font-size: 0.85rem; color: var(--text-muted); padding: 4px 0; border-bottom: 1px dashed var(--border); display: block; }
.stoc a:hover { color: var(--blue); text-decoration: none; }
.sstat { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.sstat-item { background: var(--bg-alt); border-radius: var(--radius); padding: 10px 12px; }
.sstat-num { font-size: 1.1rem; font-weight: 900; color: var(--blue); line-height: 1; margin-bottom: 3px; }
.sstat-lbl { font-size: 0.7rem; color: var(--text-muted); }
.side-security { background: #f0fdf4; border: 1px solid #bbf7d0; border-radius: var(--radius); padding: 14px; display: flex; gap: 10px; align-items: flex-start; }
.side-security svg { color: var(--green); flex-shrink: 0; margin-top: 2px; }
.side-security p, .side-security span { font-size: 0.75rem; color: #166534; line-height: 1.5; }
.art-hero-inner { position: relative; z-index: 1; }

/* ===== Article Comparison Table ===== */
.art-cmp-wrap { overflow-x: auto; margin: 16px 0; }
.art-cmp-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.art-cmp-table th { background: #eff6ff; padding: 10px 14px; font-weight: 700; text-align: center; border-bottom: 2px solid var(--border-blue); color: var(--text); }
.art-cmp-table th:first-child { text-align: left; }
.art-cmp-table td { padding: 9px 14px; border-bottom: 1px solid var(--border); text-align: center; color: var(--text-muted); }
.art-cmp-table td:first-child { text-align: left; color: var(--text); font-weight: 600; }
.art-cmp-table .hl td:nth-child(2) { background: #eff6ff; color: var(--blue); font-weight: 700; }

/* ===== Footer ===== */
.site-footer { background: var(--bg-dark); color: rgba(255,255,255,0.6); padding: 32px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.footer-brand { display: flex; align-items: center; gap: 10px; }
.footer-brand-name { font-size: 0.9rem; font-weight: 700; color: rgba(255,255,255,0.8); }
.footer-security { display: flex; align-items: center; gap: 6px; font-size: 0.8rem; color: #4ade80; }
.footer-note { font-size: 0.75rem; color: rgba(255,255,255,0.35); margin-top: 12px; line-height: 1.5; }
.footer-bottom { text-align: center; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .plat-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-band-inner { grid-template-columns: repeat(3, 1fr); }
  .sband-item:nth-child(3) { border-right: none; }
  .sband-item:nth-child(4), .sband-item:nth-child(5) { border-top: 1px solid var(--border); }
  .req-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .sec { padding: 56px 0; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { display: none; }
  .nav-links, .nav-dl { display: none; }
  .nav-toggle { display: flex; align-items: center; justify-content: center; }
  .deep-row { grid-template-columns: 1fr; }
  .deep-row.flip .deep-info, .deep-row.flip .deep-visual { order: unset; }
  .guide-grid { grid-template-columns: 1fr; }
  .art-layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .faq-cols { grid-template-columns: 1fr; }
  .stats-band-inner { grid-template-columns: repeat(2, 1fr); }
  .sband-item:nth-child(2) { border-right: none; }
  .sband-item:nth-child(3) { border-top: 1px solid var(--border); }
  .op-grid { grid-template-columns: 1fr; }
  .dl-specs { grid-template-columns: repeat(2, 1fr); }
  .rev-grid { grid-template-columns: 1fr; }
  .tips-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .feat-grid { grid-template-columns: 1fr; }
  .plat-grid { grid-template-columns: 1fr; }
  .req-grid { grid-template-columns: 1fr; }
  .dl-specs { grid-template-columns: 1fr; }
  .dl-main-btns { flex-direction: column; }
  .hero-actions { flex-direction: column; }
  .cta-actions { flex-direction: column; align-items: center; }
}