Do

• Keep everything on a 2–10 measure; column 1 is an empty margin and 11–12 hold marginalia.
• Set the headline at step 6, regular weight; use italic only if the heading font ships one (never a synthesised slant).
• Open the lead paragraph with a four-line drop cap (initial-letter or ::first-letter float).
• Put one short marginal note in 11–12, muted (italic if the body font ships one), top-aligned with the lead.

Don't

• Don't use a drop cap on more than one paragraph.
• Don't add images or buttons with fills; the CTA is an underlined link.
• Don't justify the lead without hyphenation (rivers); flush left is the default.

Phone width

• Use the full width; drop cap shrinks to three lines; the marginal note moves under the lead.