/* 独立工具页沿用首页双主题山水，以低透明度铺满视口。 */
body.paipan-page { position: relative; isolation: isolate; background-image: none; }
body.paipan-page::before { position: fixed; z-index: -1; inset: 0; background: url("/static/img/homepage-b-landscape.png?v=20260929-1") center / cover no-repeat; opacity: .16; pointer-events: none; content: ""; }
:root[data-theme="warm"] body.paipan-page::before { background-image: url("/static/img/homepage-a-landscape.png?v=20260929-1"); }
.paipan-shell { width: min(100%, 920px); margin: 0 auto 48px; color: var(--ink-color); font-size: 16px; }
.paipan-heading { margin: 0 0 28px; padding: 0 4px; }
.paipan-kicker { margin: 0 0 12px; color: var(--primary-color); font-size: 14px; font-weight: 600; }
.paipan-heading h1 { margin: 0 0 16px; font: 600 clamp(30px, 4vw, 46px)/1.25 var(--font-family-display); overflow-wrap: anywhere; }
.paipan-heading > p:last-child { max-width: 700px; margin: 0; color: var(--muted-color); line-height: 1.8; }
.bazi-form, .bazi-form * { box-sizing: border-box; }
.bazi-form { padding: clamp(24px, 4vw, 42px); border: 1px solid var(--line-color); border-radius: 20px; background: var(--paper-color); box-shadow: var(--shadow-float); }
.form-container { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 24px 16px; }
.form-group { min-width: 0; grid-column: span 2; }
.form-container > .form-group:nth-child(7) { grid-column: 1 / -1; }
.bazi-form .form-group > label { display: block; margin: 0 0 9px; color: var(--text-color); font-size: 16px; font-weight: 600; }
.combo-wrapper { position: relative; display: flex; align-items: center; min-height: 52px; border: 1px solid var(--line-color); border-radius: 9px; background: var(--input-bg, var(--paper-color)); }
.combo-wrapper:focus-within { border-color: var(--primary-color); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary-color) 14%, transparent); }
.bazi-form .combo-wrapper input, .bazi-form .combo-wrapper > select { width: 100%; min-width: 0; min-height: 50px; margin: 0; padding: 0 14px; border: 0; border-radius: inherit; background: transparent; color: var(--ink-color); font: 16px var(--font-family-base); box-shadow: none; }
.bazi-form .numeric-mode input { padding-right: 44px; }
.bazi-form input[type="number"] { appearance: textfield; -moz-appearance: textfield; }
.bazi-form input[type="number"]::-webkit-inner-spin-button, .bazi-form input[type="number"]::-webkit-outer-spin-button { margin: 0; -webkit-appearance: none; }
.unit { display: none; }
.trigger-area { position: absolute; inset: 0 0 0 auto; width: 38px; }
.trigger-area select { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; }
.trigger-area::after { position: absolute; top: 20px; right: 15px; width: 7px; height: 7px; border-right: 1px solid var(--muted-color); border-bottom: 1px solid var(--muted-color); transform: rotate(45deg); pointer-events: none; content: ""; }
.bazi-form .combo-wrapper > select { padding-right: 30px; text-overflow: ellipsis; cursor: pointer; }
.gender-options { display: flex; min-height: 52px; overflow: hidden; border: 1px solid var(--line-color); border-radius: 9px; }
.gender-options label { position: relative; display: grid; flex: 1; min-width: 0; margin: 0; cursor: pointer; }
.gender-options label + label { border-left: 1px solid var(--line-color); }
.gender-options input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.gender-options span { display: grid; place-items: center; min-height: 50px; padding: 8px; color: var(--muted-color); font-size: 16px; overflow-wrap: anywhere; }
.gender-options input:checked + span { background: color-mix(in srgb, var(--primary-color) 10%, var(--paper-color)); color: var(--primary-color); font-weight: 600; }
.gender-options input:focus-visible + span { outline: 2px solid var(--primary-color); outline-offset: -3px; }
.form-hint { margin-top: 28px; color: var(--muted-color); font-size: 16px; line-height: 1.8; }
.form-hint summary { min-height: 48px; padding: 10px 0; cursor: pointer; }
.form-hint p { margin: 8px 0 0; overflow-wrap: anywhere; }
.bazi-submit { width: 100%; min-height: 56px; margin-top: 24px; border-radius: 10px; font-size: 17px; font-weight: 600; }
.bazi-submit span { margin-left: 12px; }
.form-caption { display: flex; align-items: center; justify-content: center; gap: 8px; margin: 18px 0 0; color: var(--muted-color); font-size: 14px; line-height: 1.7; text-align: center; overflow-wrap: anywhere; }
.form-caption svg { flex: 0 0 18px; width: 18px; height: 18px; fill: none; stroke: var(--primary-color); stroke-width: 1.6; }
@media (max-width: 600px) {
    .paipan-shell { margin-bottom: 24px; }
    .paipan-heading { margin-bottom: 24px; }
    .bazi-form { padding: 24px 18px; border-radius: 14px; }
    .form-container { gap: 20px 12px; }
    .form-group:nth-child(1) { grid-column: 1 / -1; }
    .form-group:nth-child(2), .form-group:nth-child(3) { grid-column: span 3; }
    .form-group:nth-child(4), .form-group:nth-child(5) { grid-column: span 3; }
    .form-group:nth-child(6), .form-group:nth-child(7) { grid-column: 1 / -1; }
    .form-hint { margin-top: 20px; }
}
@media (max-width: 390px) {
    .bazi-form { padding: 22px 14px; }
    .form-container { column-gap: 8px; }
    .bazi-form .combo-wrapper input { padding-left: 9px; }
    .bazi-form .numeric-mode input { padding-right: 26px; }
    .trigger-area { width: 24px; }
    .trigger-area::after { right: 9px; }
}

/* 时区参考提示自然换行，沿用表单尺寸和主题文字颜色。 */
.bazi-form .timezone-note { margin: 8px 0 0; color: var(--muted-color); font-size: 13px; line-height: 1.6; overflow-wrap: anywhere; }

/* 可选经度独立排布；折叠不改变输入值或校验规则。 */
.longitude-options { margin-top: 16px; color: var(--muted-color); font-size: 16px; line-height: 1.7; }
.longitude-options summary { min-height: 44px; padding: 8px 0; cursor: pointer; overflow-wrap: anywhere; }
.longitude-options > .form-group { margin-top: 8px; }
.longitude-note { margin: 8px 0 0; font-size: 14px; overflow-wrap: anywhere; }