html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body { background: var(--bg); color: var(--text); font-family: 'Barlow', sans-serif; font-weight: 400; line-height: 1.6; min-height: 100vh; min-height: 100dvh; overflow-x: clip; position: relative; }
body::before { content: ''; position: fixed; inset: 0; opacity: 0.03; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"); background-repeat: repeat; background-size: 256px; pointer-events: none; z-index: 1; }
body::after { content: ''; position: fixed; top: 26%; left: 50%; transform: translate(-50%, -50%); width: 900px; height: 560px; background: radial-gradient(ellipse, var(--arc-glow-subtle) 0%, transparent 70%); pointer-events: none; z-index: 0; }
.page { position: relative; z-index: 2; max-width: 1120px; margin: 0 auto; padding: 0 24px 72px; }
.breadcrumb { margin-top: 24px; font-size: 0.92rem; color: var(--text-dim); font-family: 'IBM Plex Mono', monospace; letter-spacing: 0.04em; }
.breadcrumb a { color: var(--text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--arc); }
.breadcrumb span { margin: 0 6px; color: var(--text-dim); }
.hero { padding: 48px 0 28px; }
.hero__label { font-family: 'Syne', sans-serif; font-size: 0.82rem; font-weight: 700; color: var(--arc); letter-spacing: 0.2em; text-transform: uppercase; margin-bottom: 16px; }
h1 { font-family: 'Syne', sans-serif; font-weight: 800; font-size: clamp(1.75rem, 4.5vw, 2.55rem); line-height: 1.25; letter-spacing: -0.02em; margin-bottom: 16px; }
.hero__deck { color: var(--text-muted); font-size: 1.02rem; line-height: 1.65; margin-bottom: 14px; max-width: 40rem; }
.snippet { color: var(--text-muted); font-size: 1.05rem; line-height: 1.7; margin-bottom: 8px; max-width: 40rem; }
.arc-line { position: relative; height: 2px; margin: 28px 0; background: linear-gradient(90deg, transparent, var(--arc) 30%, var(--arc-hot) 50%, var(--arc) 70%, transparent); }
.arc-line::after { content: ''; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 6px; height: 6px; border-radius: 50%; background: var(--text); box-shadow: 0 0 12px var(--arc), 0 0 24px var(--arc-hot); }
.field-note { background: var(--surface); border: 1px solid var(--border); border-left: 3px solid var(--arc); border-radius: 0 var(--radius) var(--radius) 0; padding: 16px 18px; margin: 8px 0 28px; }
.field-note p { color: var(--text); margin: 0 0 8px; }
.field-note cite { font-style: normal; font-family: 'IBM Plex Mono', monospace; font-size: 0.78rem; color: var(--text-dim); }
.section__label { font-family: 'Syne', sans-serif; font-size: 0.82rem; font-weight: 700; color: var(--arc); letter-spacing: 0.2em; text-transform: uppercase; margin: 40px 0 12px; }
h2 { font-family: 'Syne', sans-serif; font-weight: 700; font-size: 1.35rem; letter-spacing: -0.01em; margin: 0 0 14px; }
h3 { font-family: 'Syne', sans-serif; font-weight: 700; font-size: 1.05rem; margin: 22px 0 8px; color: var(--text); }
p { color: var(--text-muted); line-height: 1.75; margin-bottom: 14px; }
strong { color: var(--text); font-weight: 600; }
a { color: var(--arc); text-decoration: none; }
a:hover { color: var(--arc-hot); }
ul, ol { color: var(--text-muted); margin: 0 0 16px 1.15rem; line-height: 1.7; }
li { margin-bottom: 6px; }
blockquote.monday { margin: 16px 0 20px; padding: 18px 20px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); color: var(--text); line-height: 1.7; }
blockquote.monday p { color: var(--text); margin-bottom: 10px; }
blockquote.monday p:last-child { margin-bottom: 0; }
.spine { list-style: none; margin: 16px 0 28px; padding: 0; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.spine li { display: grid; grid-template-columns: 2.6rem 1fr; gap: 12px; padding: 14px 16px; margin: 0; border-bottom: 1px solid var(--border-subtle); background: var(--surface); }
.spine li:last-child { border-bottom: 0; }
.spine__n { font-family: 'IBM Plex Mono', monospace; font-size: 0.78rem; color: var(--arc); padding-top: 2px; }
.spine__t { color: var(--text); font-weight: 600; margin-bottom: 2px; }
.spine__d { color: var(--text-muted); font-size: 0.95rem; line-height: 1.5; }
.visual { margin: 18px 0 28px; padding: 16px; background: var(--surface-deep); border: 1px solid var(--border); border-radius: var(--radius); }
.visual svg { display: block; width: 100%; height: auto; }
.visual--scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.visual.visual--scroll svg { min-width: 760px; max-width: none; width: 100%; }
.visual__cap { font-family: 'IBM Plex Mono', monospace; font-size: 0.75rem; color: var(--text-dim); letter-spacing: 0.04em; margin-top: 12px; line-height: 1.5; }
.ui-preview-card { margin: 20px 0 28px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.ui-preview-card__header { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 8px; padding: 12px 16px; background: var(--surface-deep); border-bottom: 1px solid var(--border-subtle); }
.ui-preview-card__title { font-family: 'Syne', sans-serif; font-weight: 700; font-size: 0.95rem; color: var(--text); }
.ui-preview-card__badge { font-family: 'IBM Plex Mono', monospace; font-size: 0.72rem; padding: 3px 8px; border-radius: 4px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; }
.ui-preview-card__badge--warn { background: rgba(255, 182, 39, 0.15); color: var(--arc); border: 1px solid rgba(255, 182, 39, 0.3); }
.ui-preview-card__badge--success { background: rgba(52, 211, 153, 0.15); color: #34D399; border: 1px solid rgba(52, 211, 153, 0.3); }
.ui-preview-card__body { padding: 14px 16px; }
.ui-preview-card__table { width: 100%; border-collapse: collapse; font-size: 0.86rem; min-width: 540px; }
.ui-preview-card__table th { text-align: left; padding: 6px 10px; font-family: 'IBM Plex Mono', monospace; font-size: 0.7rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.05em; border-bottom: 1px solid var(--border-subtle); }
.ui-preview-card__table td { padding: 9px 10px; border-bottom: 1px solid var(--border-subtle); color: var(--text-muted); }
.ui-preview-card__table tr:last-child td { border-bottom: none; }
.ui-preview-card__var { font-weight: 600; color: var(--text); }
.ui-preview-card__val { font-family: 'IBM Plex Mono', monospace; font-size: 0.82rem; }
.ui-preview-card__chip { display: inline-flex; align-items: center; gap: 4px; font-family: 'IBM Plex Mono', monospace; font-size: 0.72rem; padding: 2px 6px; border-radius: 3px; font-weight: 500; background: var(--surface-deep); color: var(--text-muted); }
.ui-preview-card__chip--essential { background: rgba(255, 182, 39, 0.12); color: var(--arc); font-weight: 600; }
.ui-preview-card__cite { font-family: 'IBM Plex Mono', monospace; font-size: 0.75rem; color: var(--text-dim); }
.ui-preview-card__footer { padding: 10px 16px; background: var(--surface-deep); border-top: 1px solid var(--border-subtle); font-family: 'IBM Plex Mono', monospace; font-size: 0.75rem; color: var(--text-dim); display: flex; align-items: center; gap: 8px; }
.ui-preview-card__hash { font-family: 'IBM Plex Mono', monospace; font-size: 0.78rem; color: var(--text); background: var(--surface-deep); padding: 8px 12px; border-radius: 4px; border: 1px solid var(--border-subtle); word-break: break-all; margin: 10px 0; }
.modes { display: grid; grid-template-columns: 1fr; gap: 10px; margin: 16px 0 24px; }
@media (min-width: 640px) { .modes { grid-template-columns: repeat(3, 1fr); } }
.mode { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; }
.mode h3 { margin: 0 0 8px; font-size: 0.95rem; color: var(--arc); }
.mode p { margin: 0; font-size: 0.92rem; }
.table-scroll { overflow-x: auto; margin: 18px 0 24px; border: 1px solid var(--border); border-radius: var(--radius); }
.compare-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; min-width: 640px; }
.compare-table th { text-align: left; padding: 10px 12px; background: var(--surface); color: var(--arc); font-family: 'IBM Plex Mono', monospace; font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; border-bottom: 1px solid var(--border); }
.compare-table td { padding: 10px 12px; border-bottom: 1px solid var(--border-subtle); color: var(--text-muted); vertical-align: top; }
.compare-table tr:last-child td { border-bottom: 0; }
.option { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; margin: 10px 0; }
.option h3 { margin-top: 0; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0; }
.cta-btn--primary { display: inline-block; padding: 12px 22px; min-height: 44px; background: var(--arc); color: #08080A; border-radius: var(--radius); font-family: 'Syne', sans-serif; font-weight: 700; font-size: 0.92rem; letter-spacing: 0.06em; text-transform: uppercase; }
.cta-btn--primary:hover { box-shadow: 0 4px 16px var(--arc-glow); color: #08080A; text-decoration: none; }
.cta-btn--ghost { display: inline-block; padding: 12px 22px; min-height: 44px; border: 1px solid var(--arc); color: var(--arc); border-radius: var(--radius); font-family: 'Syne', sans-serif; font-weight: 700; font-size: 0.92rem; letter-spacing: 0.06em; text-transform: uppercase; }
.cta-btn--ghost:hover { text-decoration: none; }
.trust-line { text-align: center; font-family: 'IBM Plex Mono', monospace; font-size: 0.8rem; color: var(--text-dim); padding: 8px 0 0; }
code { font-family: 'IBM Plex Mono', monospace; font-size: 0.86em; color: var(--text); }
.seal-strip .step { opacity: 0.4; }
@keyframes sealPulse { 0%, 100% { opacity: 0.35; } 14% { opacity: 1; } 22% { opacity: 1; } }
.seal-strip.anim .s1 { animation: sealPulse 10s ease-in-out infinite; }
.seal-strip.anim .s2 { animation: sealPulse 10s ease-in-out 1s infinite; }
.seal-strip.anim .s3 { animation: sealPulse 10s ease-in-out 2s infinite; }
.seal-strip.anim .s4 { animation: sealPulse 10s ease-in-out 3s infinite; }
.seal-strip.anim .s5 { animation: sealPulse 10s ease-in-out 4s infinite; }
.seal-strip.anim .s6 { animation: sealPulse 10s ease-in-out 5s infinite; }
.seal-strip.anim .s7 { animation: sealPulse 10s ease-in-out 6s infinite; }
.seal-strip.anim .s8 { animation: sealPulse 10s ease-in-out 7s infinite; }
.seal-strip.anim .s9 { animation: sealPulse 10s ease-in-out 8s infinite; }
.seal-strip.anim .s10 { animation: sealPulse 10s ease-in-out 9s infinite; }
@media (prefers-reduced-motion: reduce) { .seal-strip.anim .step { animation: none !important; opacity: 1 !important; } }
.faq-section { margin: 48px 0 24px; }
.faq-item { border-bottom: 1px solid var(--border-subtle); padding: 18px 0; }
.faq-item:last-child { border-bottom: none; }
.faq-item button { width: 100%; text-align: left; background: transparent; border: none; color: var(--text); font-family: 'Syne', sans-serif; font-weight: 700; font-size: 1.05rem; cursor: pointer; padding: 8px 0; }
.faq-answer { color: var(--text-muted); padding: 8px 0 0; line-height: 1.75; }
.faq-answer p { margin-bottom: 0; }
@media print { nav, .breadcrumb, #flux-widget, .cta-row, footer, #c5CtaMount, #c5-nav, script { display: none !important; } body { background: #fff !important; color: #000 !important; } h1, h2, h3, strong { color: #000 !important; } a { color: #000 !important; text-decoration: underline; } table, .faq-item, .field-note, blockquote { page-break-inside: avoid; } }