.upgrade-cell{display:inline-flex;align-items:center;justify-content:center;gap:5px;min-height:30px;padding:4px 10px;border:1px solid var(--line);border-radius:7px;background:var(--soft);color:var(--accent);font:inherit;font-size:11px;cursor:pointer;white-space:nowrap}
.upgrade-cell:hover,.upgrade-cell:focus-visible{border-color:var(--accent);background:var(--accent-soft)}
.upgrade-cell:focus-visible,[data-upgrade]:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.upgrade-cell span{font-size:12px;color:var(--muted)}
.upgrade-panel{padding:28px 24px;min-height:360px;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:14px}
.upgrade-panel h3,.upgrade-panel h2{margin:0;font-size:20px;line-height:1.4}
.upgrade-panel p{margin:0;color:var(--muted);font-size:13px;line-height:1.7;max-width:440px}
.upgrade-panel .primary-button{margin:4px 0 0;font-size:12px;min-height:40px}
.upgrade-preview{width:100%;display:grid;gap:11px;padding:16px 0;pointer-events:none}
.upgrade-preview i{display:block;height:8px;background:var(--accent-soft);border-radius:4px;width:80%}
.upgrade-preview i:nth-child(2){width:58%}.upgrade-preview i:nth-child(3){width:93%}.upgrade-preview i:nth-child(4){width:68%}
.momentum-upgrade{min-height:430px;padding:48px;align-items:center;text-align:center}
.momentum-upgrade .upgrade-preview{max-width:420px;opacity:.8}
.timeframes .premium-frame:after,.frame-locked strong:after{content:' ◇';font-size:10px;color:var(--muted)}
#premium-dialog{width:min(440px,calc(100vw - 32px));padding:30px;border:1px solid var(--line);border-radius:18px;background:var(--surface);color:var(--ink)}
#premium-dialog h2{font-size:23px;margin:18px 0 12px}#premium-dialog p{font-size:13px;line-height:1.7;color:var(--muted)}
@media(max-width:600px){.momentum-upgrade{padding:28px 22px;min-height:350px}.upgrade-panel{padding:24px 20px}}
.plan-preview-banner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 14px;margin-bottom:18px;border:1px solid var(--line);border-radius:9px;background:var(--accent-soft);color:var(--ink);font-size:13px}
.plan-preview-banner[hidden]{display:none}
.plan-preview-banner button{border:0;background:transparent;color:var(--accent);font:inherit;text-decoration:underline;cursor:pointer}
#auth-plan-preview select{margin:8px 10px 8px 0;padding:8px;border:1px solid var(--line);border-radius:7px;background:var(--surface);color:var(--ink)}
#auth-plan-preview label{display:block;font-size:13px}

.detail-upgrade{min-height:0;padding:20px;gap:12px}.detail-upgrade .mini-title{width:100%;margin:0;gap:10px}.detail-upgrade h3{font-size:15px;line-height:1.4}.detail-upgrade p{font-size:12px}.detail-upgrade .upgrade-preview{padding:5px 0;gap:8px}.detail-upgrade .upgrade-preview i{height:6px}.detail-upgrade .primary-button{min-height:34px;margin:0;padding:8px 14px}.detail-upgrade .premium-label{flex-shrink:0}

.tier-upgrade{width:100%;min-height:38px;justify-content:center}

.tier-upgrade{grid-column:1 / -1}
@media(max-width:640px){.detail-column{align-items:stretch}}