Futuristic Brand Upgrade Conference Poster

Goal: Create a futuristic vertical conference poster for a technology brand upgrade event, centered on huge glossy 3D typography and an abstract digital wave landscape.

Canvas: 9:16 vertical poster, dark navy-to-black background, high contrast, premium tech conference aesthetic. Leave generous black space at the very top and bottom, with the main title occupying the upper-middle of the poster.

Visual style: Sleek sci-fi event design, luminous electric blue and violet accents, metallic white/silver lettering, soft bloom, subtle lens glow, realistic 3D beveled typography, clean corporate technology mood. The background should feel like a vast data ocean made of glowing dotted wave grids and flowing neon lines, brightest at the center horizon.

Top branding: At the top center, place a small abstract X-shaped logo, followed by the brand text {argument name="brand name" default="X·SYS"}. Under it, add tiny uppercase subtitle text: “SYSTEM UPGRADE”.

Main typography: Create two stacked lines of enormous custom 3D display text reading {argument name="main title" default="HELLO WORLD"}. The letters should be rounded, blocky, futuristic, glossy white-silver, with bevels, shadows, and embedded tech details. Add exactly 7 visible decorative letter details: 1 dotted vertical panel inside the H, 1 small rectangular crossbar block in the H, 1 dotted panel at the bottom of the E/L area, 1 cyan line panel inside the E, 1 concentric neon cyan ring inside the O in HELLO, 1 purple neon ring inside the O in WORLD, and 1 striped diagonal insert inside the R. Add additional subtle grooves and small dotted perforations only if they do not clutter the title.

Middle and lower text content: Beneath the digital wave horizon, center the event information in clean widely spaced sans-serif type. Use Chinese headline text {argument name="Chinese event headline" default="品牌升级发布会"} with a smaller English subtitle below: “BRAND UPGRADE CONFERENCE”. Below that, show “= 年度启动 =” with small cyan and purple equal-sign accents on both sides. Add a tiny glowing compass/star icon beneath it. Then display the date and time {argument name="date and time" default="2025.05.20  14:00"}. Under the date line, display “中国·深圳 | SHENZHEN, CHINA”. Near the bottom, add a small thin spiral-system icon and the slogan {argument name="bottom slogan" default="NEW SYSTEM  NEW FUTURE"} in tiny spaced uppercase letters.

Composition: Keep all text perfectly centered on a vertical axis. The large “HELLO WORLD” title should dominate about half of the poster height. The digital wave should pass behind and below the title, forming a luminous horizontal valley with blue and violet particle trails. Use no people, no physical venue photo, no extra logos, no watermark.