:root{color-scheme:light;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Segoe UI,sans-serif;--bg: #f0f2f7;--primary: #6366f1;--primary-2: #4f46e5;--text: #1f2937}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);-webkit-text-size-adjust:100%;text-size-adjust:100%}body{min-height:var(--app-height, 100vh);overscroll-behavior-y:contain}#app{min-height:var(--app-height, 100vh)}.start-page{max-width:900px;min-height:100vh;margin:0 auto;padding:40px 22px 28px;display:flex;flex-direction:column}.hero{margin-bottom:30px}.hero-badge{display:inline-block;font-size:13px;font-weight:600;color:var(--primary);background:#eef2ff;border-radius:999px;padding:6px 12px}.hero-title{margin:16px 0 8px;font-size:clamp(34px,4.8vw,56px)}.gradient-text{margin-left:4px;background:linear-gradient(135deg,#6366f1,#7c3aed);-webkit-background-clip:text;background-clip:text;color:transparent}.hero-sub{margin:0;color:#6b7280}.card-list{display:flex;flex-direction:column;gap:14px}.card{border:0;text-align:left;display:flex;align-items:center;border-radius:18px;padding:20px;cursor:pointer}.card-active{background:#fff;box-shadow:0 8px 24px #00000012}.card-pending{background:#f9fafb;border:1px dashed #dde0ea}.card-icon-wrap{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-right:16px;flex-shrink:0;color:#fff;font-weight:700}.icon-english{background:linear-gradient(135deg,#6366f1,#7c3aed)}.icon-pending{background:#eceef5;color:#9ca3af}.card-body{flex:1}.card-top{display:flex;align-items:center;gap:8px;margin-bottom:6px}.card-name{font-size:22px;font-weight:700}.card-name-dim{color:#9ca3af}.badge{font-size:11px;border-radius:6px;padding:2px 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button{border:0;background:#eef2ff;color:var(--primary-2);border-radius:999px;padding:6px 12px}.history-list{overflow-y:auto;padding:8px}.history-item{display:flex;align-items:center;gap:8px;border-radius:10px;padding:8px}.history-item:hover{background:#f7f8fb}.history-main{flex:1;cursor:pointer}.history-title{font-size:14px;font-weight:600}.history-time{margin-top:2px;font-size:12px;color:#6b7280}.history-delete{border:0;border-radius:8px;background:#fee2e2;color:#ef4444;padding:6px 8px;cursor:pointer}.history-empty{color:#9ca3af;font-size:13px;text-align:center;padding:26px 0}.toast{position:fixed;left:50%;bottom:32px;transform:translate(-50%) translateY(8px);background:#111827eb;color:#fff;border-radius:999px;font-size:13px;padding:8px 14px;opacity:0;transition:.2s;pointer-events:none;z-index:20}.toast-show{opacity:1;transform:translate(-50%) translateY(0)}@media(max-width:680px){.chat-header h2{font-size:16px}.header-back,.header-btn{padding:6px 8px;font-size:12px}.content-wrapper{max-width:calc(100vw - 88px)}}