/* 初始欢迎页：在窄聊天栏内也能直接选择开始方式。 */
.ai-scroll .chat-welcome.welcome-start,
.chat-welcome.welcome-start {
    gap: 16px;
    padding: 20px 0;
    align-items: stretch;
    justify-content: flex-start;
}
.welcome-start .welcome-hero { text-align: left; }
.welcome-start .welcome-greeting {
    color: var(--color-ink-light);
    font-family: var(--font-ui);
    font-size: 0.9em;
    font-weight: 400;
    letter-spacing: 0;
}
.welcome-start-title {
    margin: 10px 0 8px;
    color: var(--color-ink);
    font-family: var(--font-content);
    font-size: 1.25em;
    font-weight: 600;
    line-height: 1.5;
    text-wrap: balance;
}
.welcome-start-intro,
.welcome-start-note,
.welcome-start-upload-hint {
    margin: 0;
    color: var(--color-ink-light);
    font-size: 0.82em;
    line-height: 1.7;
}
.welcome-start-choices { display: grid; gap: 10px; }
.welcome-start-card {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
    width: 100%;
    min-height: 76px;
    padding: 14px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: var(--color-card);
    color: var(--color-ink);
    font: inherit;
    text-align: left;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}
.welcome-start-card:hover {
    background: var(--color-primary-bg);
    border-color: var(--color-primary);
}
.welcome-start-card > svg { flex: 0 0 20px; color: var(--color-primary); }
.welcome-start-card-body { display: grid; gap: 4px; flex: 1; min-width: 0; }
.welcome-start-card-body strong { font-size: 0.95em; font-weight: 600; }
.welcome-start-card-body > span { color: var(--color-ink-light); font-size: 0.76em; line-height: 1.6; }
.welcome-start-arrow { color: var(--color-primary); }
.welcome-start-more { color: var(--color-ink-light); font-size: 0.85em; }
.welcome-start-more summary { cursor: pointer; padding: 8px 0; min-height: 44px; }
.welcome-start-theme-list { display: grid; gap: 6px; padding-top: 4px; }
.welcome-start-theme-list button,
.welcome-start-free {
    border: 0;
    border-radius: 8px;
    background: var(--color-primary-bg);
    color: var(--color-primary-dark);
    font: inherit;
    text-align: left;
    min-height: 44px;
    padding: 10px 12px;
    cursor: pointer;
}
.welcome-start-free { background: transparent; padding: 4px 0; font-size: 0.85em; }
.welcome-start button:focus-visible,
.welcome-start summary:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; }
.welcome-start-note { font-size: 0.76em; }
.welcome-start-upload-hint { padding: 10px; background: var(--color-primary-bg); border-radius: 8px; }
.welcome-start [hidden] { display: none !important; }
@media (prefers-reduced-motion: reduce) { .welcome-start-card { transition: none; } }