.ia-sheet{z-index:300;background:#00000073;justify-content:center;align-items:center;padding:16px;animation:.18s ia-fade-in;display:flex;position:fixed;inset:0}.ia-sheet__panel{background:var(--color-white);border-radius:var(--radius-lg);width:100%;max-width:420px;box-shadow:var(--shadow-lg)}.ia-sheet__grabber{display:none}.ia-sheet__body{word-break:keep-all;padding:20px}.ia-sheet__intro{align-items:center;gap:12px;display:flex}.ia-sheet__app-icon{border-radius:12px;flex:none;width:48px;height:48px}.ia-sheet__head{justify-content:space-between;align-items:center;gap:12px;display:flex}.ia-sheet__title{color:var(--color-text);margin:0;font-size:16px;font-weight:600}.ia-sheet__desc{color:var(--color-text-secondary);margin:2px 0 0;font-size:14px;line-height:1.5}.ia-sheet__close{width:32px;height:32px;color:var(--color-text-muted);justify-content:center;align-items:center;margin-right:-6px;font-size:16px;display:inline-flex}.ia-sheet__actions{gap:8px;margin-top:18px;display:flex}.ia-sheet__btn{color:var(--color-text-secondary);border:1.5px solid var(--color-border);border-radius:var(--radius-sm);flex:1;padding:12px;font-size:15px;font-weight:600;transition:border-color .15s,background .15s,color .15s}.ia-sheet__btn--primary{color:#fff;background:var(--color-primary);border-color:var(--color-primary);flex:1.4}.ia-sheet__btn--block{width:100%;margin-top:18px;display:block}@media (hover:hover){.ia-sheet__btn:hover{border-color:var(--color-text-muted);color:var(--color-text)}.ia-sheet__btn--primary:hover{color:#fff;background:var(--color-primary-dark);border-color:var(--color-primary-dark)}}.ia-sheet__steps{flex-direction:column;gap:14px;margin:16px 0 0;padding:0;list-style:none;display:flex}.ia-sheet__step{color:var(--color-text);gap:10px;font-size:15px;line-height:1.5;display:flex}.ia-sheet__step b{font-weight:600}.ia-sheet__num{border-radius:var(--radius-full);background:var(--color-primary-light);width:22px;height:22px;color:var(--color-primary-dark);flex:none;justify-content:center;align-items:center;margin-top:1px;font-size:12px;font-weight:700;display:inline-flex}.ia-sheet__inline-icon{vertical-align:-3px;width:18px;height:18px;color:var(--color-primary-dark);display:inline-block}.ia-sheet__hint{color:var(--color-text-muted);font-size:13px;display:block}@media (max-width:768px){.ia-sheet{align-items:flex-end;padding:0}.ia-sheet__panel{border-radius:var(--radius-lg) var(--radius-lg) 0 0;max-width:none;animation:.22s cubic-bezier(.22,1,.36,1) ia-sheet-in}.ia-sheet__grabber{border-radius:var(--radius-full);background:var(--color-border);width:36px;height:4px;margin:8px auto 0;display:block}.ia-sheet__body{padding:14px 16px calc(16px + env(safe-area-inset-bottom))}}@keyframes ia-fade-in{0%{opacity:0}to{opacity:1}}@keyframes ia-sheet-in{0%{transform:translateY(100%)}to{transform:none}}@media (prefers-reduced-motion:reduce){.ia-sheet,.ia-sheet__panel{animation:none}}