Build a single-file HTML landing page for "Lemegeton", a fictional antivirus whose 72 protection modules are the 72 spirits of the Ars Goetia (public-domain names). The look is a sci-fi hazard terminal: amber glow on black, hazard stripes, hex cells and kanji labels. System font stacks only (a condensed sans for UI, a Mincho serif for headings and kanji, a monospace for readouts); no libraries, no images. Fictional brand, pricing and copy.

THE SYSTEM
- Tokens on body: an amber glow (rgb 255,102,0; text #fa0), a danger red (#f30, fill #f23), an ok green (#3f6), warm off-white body text, and a 36px faint amber grid behind everything with CRT scanlines on top.
- Seven rank colours (King amber, Duke orange, Prince violet, Marquis cyan, President green, Earl yellow, Knight white), each a class that sets --accent/--accent-rgb, all at 7:1 or better on black.
- Reusable pieces: a double glowing border (.-bordered with danger/ok/rank variants), diagonal hazard stripes with glowing edges, condensed uppercase labels with a 1px glow outline (mini, small, short and blinking sizes), a kanji label with a striped decal, hex-cell grids drawn from a data attribute (some cells off, the rest blinking out of step), and corner brackets.
- An Alert mode toggle turns the whole terminal red.

THE HERO
- A fixed 70px top bar: a kanji brand tile, "LEMEGETON" with a tiny "the lesser key to your system" over it, status labels ("seal status: nominal" in green with a blinking dot, "72 / 72 bound"), and Pause motion, Alert mode and Menu buttons (icon-only on phones).
- The page scrolls inside a container under the bar. Left: an eyebrow with a kanji block, the h1 "72 spirits. Zero infections." in huge uppercase serif with "Zero" in glowing red and indented, a lede, two CTAs and platform labels; a giant outlined vertical 七十二 sits behind it.
- Right: a "Seal analysis display" HUD with blinking "Approaching limits" and "Danger" labels, a crosshair, and an SVG seal: two counter-rotating rings, one carrying all 72 spirit names round its edge and one with a red text ring and a hexagram, plus HUD readouts, a hex grid and an "Internal" kanji label. Clicking the HUD pauses motion.
- A full-screen overlay menu: the kings as cards with generated sigils, three link columns, a "Season of SAMHAIN" name that is fitted to its box, font size and scanline controls, and a striped "current event" card.

THE REST
- A sticky section nav with kanji link prefixes that highlights the section in view, an "all systems nominal" status, and up/down buttons.
- A readout strip: four big monospace stats with progress bars.
- The three wards (firewall, sandbox, encrypted backup) as cards, each in its own rank colour with an animated SVG emblem, a readout, a status label, spec labels and a link.
- A live scan: a terminal that streams scanned file paths, with every third line binding a spirit to a threat in red, three "core" boxes that flip to BANISH together, a progress meter, and a tally of spirits per rank.
- The 72: a search box, rank filter buttons with counts, a large "summoned" panel (sigil, number, rank, name, lore, what it binds, stats), and a grid of all 72 spirit buttons. Each sigil is generated by tracing the spirit's letters round a 26-point wheel, inside rings and tick marks.
- Four directives, three pricing pacts (the middle one featured with a blinking "recommended" tag), a striped final CTA with a giant outlined 結界, and a footer that credits the public-domain names.

THE FLOOR
One h1, a main, data-section on every region, real buttons with aria-pressed, a skip link, visible focus, labelled search, aria-live on the count and the summon panel. Pause motion, alert mode, scanlines and font size are saved to localStorage inside try/catch. Under prefers-reduced-motion nothing spins or blinks. No horizontal scroll at 390px.