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(width<=640px){.mode1-container .question{font-size:clamp(2.2rem,13vw,3.4rem)}.mode1-container .submit-button,.mode1-container .next-button,.mode1-container .give-up-button,.mode1-container .back-button{width:100%}}.mode2-container{width:100%;padding:.25rem 0 2rem}.mode2-content{flex-direction:column;gap:1rem;width:min(100%,760px);margin:0 auto;display:flex}.mode2-content h1{text-align:left;font-size:clamp(2rem,5vw,3rem)}.mode2-container .toggle-button{border:1px solid var(--border);min-height:2.85rem;color:var(--text);background:#ffffffbd;border-radius:999px;align-self:flex-end;padding:.72rem 1rem;font-weight:700;transition:transform .18s,border-color .18s,background-color .18s}.mode2-container .toggle-button:hover{border-color:var(--border-strong);transform:translateY(-1px)}.mode2-container .toggle-button.active{color:var(--accent-strong);background:#e8f2ebf5;border-color:#6f90804d}.mode2-container .question-section,.mode2-container .loading-state{border:1px solid 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1.1rem;font-size:1.08rem;font-weight:600;transition:border-color .18s,box-shadow .18s,background-color .18s}.mode2-container .answer-input:focus{border-color:var(--accent);background:#fff;outline:none;box-shadow:0 0 0 4px #7ea99526}.mode2-container .answer-input::placeholder{color:var(--text-muted);font-weight:500}.mode2-container .submit-button,.mode2-container .next-button,.mode2-container .give-up-button,.mode2-container .tip-button{border-radius:999px;min-height:3.2rem;padding:.9rem 1.15rem;font-weight:700;transition:transform .18s,box-shadow .18s,background-color .18s,border-color .18s}.mode2-container .submit-button,.mode2-container .next-button{color:#fff;border:none;width:min(100%,260px);margin:0 auto}.mode2-container .submit-button{background:linear-gradient(135deg, var(--accent), var(--accent-strong))}.mode2-container .next-button{background:linear-gradient(135deg, var(--info), var(--info-strong));box-shadow:0 14px 24px #6d93a433}.mode2-container 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