:root{--ink:#111315;--muted:#6d7176;--line:#e4e7ea;--paper:#f7f7f4;--white:#fff;--lime:#c9ff48;--violet:#826cff;--red:#e85454;--blue:#2979ff;--shadow:0 20px 60px rgba(17,19,21,.08);font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:var(--paper);line-height:1.55}*{box-sizing:border-box}body{margin:0}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}.public-nav{height:78px;display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,6vw);background:rgba(247,247,244,.92);backdrop-filter:blur(16px);position:sticky;top:0;z-index:20;border-bottom:1px solid rgba(0,0,0,.05)}.public-nav nav{display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:-.02em}.brand-mark{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;background:var(--ink);color:var(--lime);font-weight:900;font-size:13px}.button{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--ink);border-radius:999px;padding:13px 22px;background:var(--ink);color:white;font-weight:700;cursor:pointer;transition:.2s}.button:hover{transform:translateY(-1px);box-shadow:0 8px 22px rgba(0,0,0,.15)}.button.small{padding:9px 16px;font-size:14px}.button.secondary{background:transparent;color:var(--ink)}.button.light{background:var(--lime);color:var(--ink);border-color:var(--lime)}.button.block{width:100%}.public-main{min-height:calc(100vh - 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