.brv{--brv-bg: #f8f8f5;--brv-surface: #ffffff;--brv-ink: #202124;--brv-muted: #73777d;--brv-accent: #635bff;--brv-accent-soft: #efedff;--brv-green: #26a269;--brv-line: #e9e9e5;--brv-shadow: 0 20px 60px rgba(30, 30, 30, .08);background:var(--brv-bg);color:var(--brv-ink);border-radius:24px;padding:4px 0 48px;font-family:DM Sans,-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif}.brv *{box-sizing:border-box}.brv button{font:inherit;border:0;cursor:pointer}.brv-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 20px 8px}.brv-back{background:var(--brv-surface);color:var(--brv-muted);border:1px solid var(--brv-line);border-radius:12px;padding:8px 14px;font-size:13px;font-weight:600}.brv-tabs{display:flex;gap:6px;background:var(--brv-surface);border:1px solid var(--brv-line);border-radius:14px;padding:4px}.brv-tab{background:transparent;color:var(--brv-muted);padding:7px 13px;border-radius:10px;font-size:13px;font-weight:600}.brv-tab.on{background:var(--brv-ink);color:#fff}.brv-main{max-width:1040px;margin:0 auto;padding:8px 20px 40px}.brv-hero{text-align:center;padding:28px 0 36px}.brv-eyebrow{font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--brv-accent)}.brv-hero h1{font-size:clamp(30px,7vw,54px);line-height:1.06;letter-spacing:-.03em;margin:12px 0;font-weight:800}.brv-hero p{max-width:560px;margin:18px auto;color:var(--brv-muted);font-size:16px;line-height:1.6}.brv-primary{background:var(--brv-ink);color:#fff;padding:16px 26px;border-radius:16px;font-weight:700;box-shadow:0 12px 30px #00000026;transition:.2s}.brv-primary:hover{transform:translateY(-2px)}.brv-secondary{background:var(--brv-surface);color:var(--brv-ink);padding:12px 18px;border:1px solid var(--brv-line);border-radius:14px;font-weight:600}.brv-trust{margin-top:12px;color:var(--brv-muted);font-size:12px}.brv-section{margin-top:38px}.brv-section-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:14px}.brv-section-head h2{margin:0;font-size:20px;font-weight:800}.brv-section-head p{color:var(--brv-muted);margin:4px 0 0;font-size:13px}.brv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.brv-card{background:var(--brv-surface);border:1px solid var(--brv-line);border-radius:20px;padding:18px;min-height:128px;transition:.2s;text-align:left}.brv-card:hover{transform:translateY(-3px);box-shadow:var(--brv-shadow)}.brv-card-icon{font-size:22px}.brv-card h3{margin:12px 0 6px;font-size:15px;font-weight:700}.brv-card p{color:var(--brv-muted);margin:0;line-height:1.5;font-size:13px}.brv-progress-card{background:var(--brv-ink);color:#fff;border-radius:24px;padding:24px;display:grid;grid-template-columns:1fr 150px;gap:24px}.brv-progress-card h2{color:#fff}.brv-progress-card p{color:#c7c9cd;font-size:13px}.brv-bar{height:10px;background:#424449;border-radius:20px;overflow:hidden;margin:14px 0 8px}.brv-bar span{display:block;height:100%;background:#fff;border-radius:20px;transition:width 1s}.brv-stat{font-size:38px;font-weight:800;line-height:1}.brv-small{font-size:12px;color:var(--brv-muted)}.brv-practice{text-align:center}.brv-panel{max-width:720px;margin:20px auto 0;background:var(--brv-surface);border:1px solid var(--brv-line);border-radius:26px;padding:34px 24px;box-shadow:var(--brv-shadow)}.brv-miracle{width:64px;height:64px;border-radius:22px;background:var(--brv-accent-soft);display:grid;place-items:center;font-size:28px;margin:0 auto 14px}.brv-prompt{font-size:22px;font-weight:800;line-height:1.3;margin:16px 0 8px}.brv-hint{color:var(--brv-muted);font-size:13px}.brv-mic{width:84px;height:84px;border-radius:50%;background:var(--brv-accent);color:#fff;font-size:30px;margin:22px auto 8px;display:grid;place-items:center;box-shadow:0 16px 35px #635bff47}.brv-mic.listening{animation:brv-pulse 1.2s infinite}@keyframes brv-pulse{50%{transform:scale(1.08);box-shadow:0 0 0 18px #635bff1f}}.brv-feedback{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:20px 0 12px}.brv-metric{padding:16px;border-radius:16px;background:var(--brv-bg)}.brv-metric strong{font-size:24px;font-weight:800;display:block}.brv-row{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:12px}.brv-list{display:grid;gap:10px}.brv-list .brv-card{display:flex;justify-content:space-between;align-items:center;min-height:auto}@media (max-width: 760px){.brv-grid,.brv-progress-card,.brv-feedback{grid-template-columns:1fr}.brv-main{padding:8px 14px 32px}.brv-panel{padding:26px 16px}.brv-tabs{display:none}}