feat(ui): design overhaul, global login modal, design spec
- nav: center links (首页/排行榜/我的), right-side AuthMenu + RemainingVotesBadge; image logo with responsive sizing
- auth: replace /login route with global LoginModal triggered anywhere; "我的" intercepts unauth users with post-login redirect
- home: full-screen Hero, redesigned Top12 (12 pill cards, top-3 glow), scroll-snap mandatory between Hero/Top12/candidates
- home: candidates section with sticky filter that gains frosted-glass bg when stuck (matches nav)
- filter: simplified tags (全部/舞蹈/声乐/rap/全能型); ArtistCard uniform purple vote button
- ranking/me: remove Top12Bar; me header stacks 编辑资料/退出登录 vertically
- typography: font-logo set to Orbitron; ✦ glyph in CYBER ✦ STAR preserved
- layout: max-w-[1500px] unified across pages
- docs: add design-spec.md + design-spec.html with full visual spec (lucide SVG, zero emoji policy)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
iye
d5ed43acbd
