:root{--bg: #ffffff;--bg-soft: #f6f7f9;--bg-tint: #eef2ff;--ink: #14161c;--ink-soft: #636a78;--ink-faint: #9aa1ad;--line: #e9ebef;--line-strong: #d9dde4;--brand: #4c6aff;--brand-ink: #3451d6;--brand-soft: #eef2ff;--whatsapp: #25d366;--ink-bg: #0b1220;--ink-bg-2: #0f1a30;--on-dark: #f3f6ff;--on-dark-soft: #aebad6;--on-dark-line: rgba(255,255,255,.14);--brand-glow: rgba(76,106,255,.3);--radius: 16px;--radius-sm: 10px;--maxw: 1180px;--shadow-sm: 0 1px 2px rgba(20,22,28,.04), 0 4px 14px rgba(20,22,28,.05);--shadow-md: 0 10px 30px rgba(20,22,28,.1);--font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", 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