:root {
    --ink: #17212b;
    --muted: #66717d;
    --line: #dce2e7;
    --surface: #ffffff;
    --canvas: #f4f6f7;
    --blue: #1769aa;
    --blue-dark: #0d4f86;
    --green: #16825d;
    --red: #b33a3a;
    --amber: #9b6500;
    --shadow: 0 14px 34px rgba(23, 33, 43, 0.08);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; color: var(--ink); background: var(--canvas); font-family: "Segoe UI", "Microsoft YaHei", sans-serif; font-size: 16px; line-height: 1.5; letter-spacing: 0; }
button, input, select { font: inherit; letter-spacing: 0; }
button, a { -webkit-tap-highlight-color: transparent; }
.shell { width: min(1080px, calc(100% - 32px)); margin: 0 auto; }
.app-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.96); backdrop-filter: blur(10px); }
.header-inner { min-height: 68px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 18px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-size: 19px; font-weight: 700; text-decoration: none; }
.brand-mark { display: grid; width: 34px; height: 34px; place-items: center; color: white; background: var(--ink); border-radius: 6px; }
.mode-switch { display: grid; grid-template-columns: repeat(4, minmax(84px, 1fr)); padding: 4px; border: 1px solid var(--line); border-radius: 7px; background: #eef1f3; }
.mode-btn { min-height: 40px; border: 0; border-radius: 5px; color: var(--muted); background: transparent; cursor: pointer; transition: background .18s ease, color .18s ease; }
.mode-btn i { margin-right: 6px; }
.mode-btn.active { color: var(--ink); background: white; box-shadow: 0 1px 4px rgba(23,33,43,.12); }
.mode-btn.locked, .mode-btn:disabled { color: #9aa4ac; cursor: not-allowed; opacity: .6; }
.icon-link { justify-self: end; display: grid; width: 42px; height: 42px; place-items: center; border: 1px solid var(--line); border-radius: 6px; color: var(--ink); background: white; text-decoration: none; }
.main-shell { padding: 64px 0 88px; }
.workspace { max-width: 920px; margin: 0 auto; }
.workspace-head { display: flex; justify-content: space-between; align-items: end; gap: 20px; margin-bottom: 20px; }
.workspace h1 { margin: 2px 0 0; font-size: clamp(28px, 5vw, 42px); font-weight: 700; }
.section-label { color: var(--blue); font-size: 12px; font-weight: 800; }
.rule-badge { display: inline-flex; align-items: center; gap: 7px; padding: 7px 10px; border: 1px solid #b9ded0; border-radius: 5px; color: #0f684a; background: #edf8f4; font-size: 13px; }
.tool-panel { padding: 28px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); box-shadow: var(--shadow); }
.form-grid { display: grid; grid-template-columns: 1fr 210px; gap: 20px; align-items: end; }
.field { min-width: 0; }
.field-wide { grid-column: 1 / -1; }
.field label, .field-label { display: block; margin-bottom: 7px; font-size: 14px; font-weight: 650; }
.field input, .field select, .query-bar input { width: 100%; min-height: 48px; padding: 11px 13px; border: 1px solid #c9d1d8; border-radius: 6px; color: var(--ink); background: white; outline: none; }
.field input:focus, .field select:focus, .query-bar input:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(23,105,170,.12); }
.primary-btn { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 0 20px; border: 0; border-radius: 6px; color: white; background: var(--blue); font-weight: 700; cursor: pointer; transition: background .18s ease, transform .18s ease; }
.primary-btn:hover { background: var(--blue-dark); }
.primary-btn:active { transform: translateY(1px); }
.primary-btn:disabled { opacity: .52; cursor: not-allowed; }
.form-message { min-height: 24px; margin-top: 16px; font-size: 14px; }
.form-message.success { color: var(--green); }
.form-message.error { color: var(--red); }
.input-action { display: grid; grid-template-columns: 1fr 48px; }
.input-action input { border-radius: 6px 0 0 6px; }
.input-action button { border: 1px solid #c9d1d8; border-left: 0; border-radius: 0 6px 6px 0; color: var(--blue); background: #eef6fb; cursor: pointer; }
.export-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.export-submit { grid-column: 2; justify-self: end; min-width: 180px; }
.resolution-options { min-height: 44px; display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.resolution-option { position: relative; display: inline-flex; min-height: 40px; align-items: center; justify-content: center; padding: 7px 14px; border: 1px solid #c9d1d8; border-radius: 6px; color: var(--muted); background: #fff; font-weight: 650; cursor: pointer; }
.resolution-option input { position: absolute; width: 1px; height: 1px; margin: 0; opacity: 0; pointer-events: none; }
.resolution-option:has(input:checked) { border-color: var(--blue); color: #fff; background: var(--blue); }
.resolution-option:focus-within { box-shadow: 0 0 0 3px rgba(23,105,170,.12); }
.transparent-field { grid-column: 2; }
.transparent-option { min-height: 58px; display: flex; align-items: center; gap: 11px; padding: 9px 12px; border: 1px solid var(--line); border-radius: 6px; background: #fafbfb; cursor: pointer; }
.transparent-option input { flex: 0 0 auto; width: 18px; min-height: 18px; margin: 0; accent-color: var(--blue); }
.transparent-option span { display: grid; gap: 1px; }
.transparent-option strong { font-size: 14px; }
.transparent-option small { color: var(--muted); font-size: 12px; font-weight: 400; }
.mobile-format-options { display: none; }
.muted { color: var(--muted); }
.text-btn { min-height: 42px; border: 0; color: var(--blue); background: transparent; font-weight: 650; cursor: pointer; }
.progress-panel { margin-top: 18px; padding: 20px 24px; border: 1px solid var(--line); border-radius: 8px; background: white; }
.task-summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.task-summary span { color: var(--muted); font-size: 13px; }
.export-task-list { display: grid; }
.export-task-row { min-height: 52px; display: grid; grid-template-columns: 88px 72px 82px 90px minmax(120px, 1fr); align-items: center; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--line); }
.export-task-row:last-child { border-bottom: 0; }
.export-task-row > span { color: var(--muted); font-size: 14px; }
.task-status { font-weight: 700; }
.task-status.success { color: var(--green) !important; }
.task-status.failed { color: var(--red) !important; }
.task-status.active { color: var(--amber) !important; }
.task-action { display: flex; justify-content: flex-end; }
.task-auto-update, .task-no-result { font-size: 13px; }
.task-downloads { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px; }
.task-downloads a { color: var(--blue); font-weight: 700; text-decoration: none; white-space: nowrap; }
.task-downloads a.saving, .status-line-links a.saving, .result-download.saving { color: var(--muted); pointer-events: none; }
.export-result-card { display: grid; grid-template-columns: minmax(180px, 280px) 1fr; gap: 16px; margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--line); }
.result-image { grid-row: 1 / span 4; display: block; overflow: hidden; border: 1px solid var(--line); border-radius: 6px; background: #eef1f3; }
.result-image img { display: block; width: 100%; height: auto; max-height: 280px; object-fit: contain; }
.result-summary { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.result-summary span { color: var(--green); font-weight: 700; }
.result-downloads { display: flex; flex-wrap: wrap; gap: 10px; }
.result-download { min-height: 42px; display: inline-flex; align-items: center; gap: 7px; padding: 8px 12px; border: 1px solid #aabfce; border-radius: 5px; color: var(--blue); background: white; font-weight: 700; text-decoration: none; }
.result-note { margin: 0; color: var(--muted); font-size: 13px; }
.result-note i { margin-right: 6px; }
.result-note.error { color: var(--red); }
.result-failure { margin-top: 16px; padding: 14px; border: 1px solid #efc3c3; border-radius: 6px; color: var(--red); background: #fff4f4; }
.result-failure p { margin: 4px 0; }
.compact-result { grid-template-columns: 140px 1fr; padding-top: 12px; }
.export-status { grid-column: span 1; }
.query-bar { display: grid; grid-template-columns: 1fr 140px; gap: 10px; }
.status-results { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 20px; }
.status-item { padding: 18px; border: 1px solid var(--line); border-radius: 7px; background: white; }
.status-item h2 { margin: 0 0 10px; font-size: 16px; }
.status-row { display: flex; justify-content: space-between; gap: 16px; padding: 5px 0; color: var(--muted); font-size: 14px; }
.status-row strong { color: var(--ink); text-align: right; }
.status-results { display: block; max-width: 760px; margin: 16px auto 0; }
.status-line { min-height: 44px; display: grid; grid-template-columns: 90px 90px minmax(150px, 1fr) auto; align-items: center; gap: 10px; padding: 6px 0; border-bottom: 1px solid var(--line); }
.status-line:first-child { border-top: 1px solid var(--line); }
.status-line span { color: var(--muted); }
.status-line-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px; }
.status-line-links a { color: var(--blue); font-weight: 700; text-decoration: none; }
.status-line-error { justify-self: end; color: var(--red) !important; }
.failure-detail-btn { min-height: 34px; display: inline-flex; align-items: center; justify-content: center; gap: 5px; padding: 5px 10px; border: 1px solid #d99b9b; border-radius: 5px; color: var(--red); background: #fff; font-weight: 700; cursor: pointer; white-space: nowrap; }
.failure-detail-btn:hover { background: #fff4f4; }
.failure-guide-body { display: grid; gap: 18px; }
.failure-guide-body section { padding: 14px 16px; border: 1px solid var(--line); border-radius: 6px; background: #fafbfb; }
.failure-guide-body h3 { margin: 0 0 8px; font-size: 16px; }
.failure-guide-body p, .failure-guide-body ol { margin: 0; }
.failure-guide-body ol { padding-left: 22px; }
.failure-guide-image { max-height: 420px; object-fit: contain; border: 1px solid var(--line); }
.mobile-label { display: none; }
.status-empty { padding: 12px 0; color: var(--muted); text-align: center; }
.status-empty.error { color: var(--red); }
.tutorial-image { display: block; width: 100%; height: auto; border-radius: 5px; }
.modal-dialog { max-height: calc(100vh - 32px); }
.modal-content { max-height: calc(100vh - 32px); }
.modal-body { overflow-y: auto; overscroll-behavior: contain; }
.tutorial-image { max-width: 100%; }

/* KEY 入口只保留必要操作：20 位输入框与确认按钮等宽并居中。 */
#view-key { min-height: calc(100vh - 152px); max-width: 320px; margin: 0 auto; display: grid; align-items: center; }
#view-key .tool-panel { padding: 20px; }
#view-key .form-grid { grid-template-columns: minmax(0, 240px); justify-content: center; gap: 12px; }
#view-key .primary-btn { width: 100%; }
#view-key .form-message { max-width: 492px; margin: 12px auto 0; }

/* 首页不显示品牌和后台入口；识别 KEY 后只显示居中的功能导航。 */
.header-inner { grid-template-columns: 1fr; }
.mode-switch { justify-self: center; }

/* 升级、导图、查询：桌面端统一收窄并居中，减少无效留白。 */
#view-upgrade,
#view-export,
#view-status,
#view-bioi { max-width: 1100px; }
#view-upgrade .workspace-head,
#view-export .workspace-head,
#view-status .workspace-head { flex-direction: column; align-items: center; justify-content: center; gap: 8px; margin-bottom: 14px; text-align: center; }
#view-upgrade h1,
#view-export h1,
#view-status h1,
#view-bioi h1 { font-size: clamp(26px, 3vw, 32px); }
#view-upgrade .tool-panel,
#view-export .tool-panel { padding: 22px; }
#view-upgrade .tool-panel { max-width: 520px; margin: 0 auto; display: grid; grid-template-columns: minmax(0, 1fr) 160px; gap: 12px; align-items: end; }
#view-upgrade .tool-panel.upgrade-completed { max-width: 346px; grid-template-columns: minmax(0, 1fr); }
#view-upgrade .form-message { grid-column: 1 / -1; margin-top: 0; }
#view-export { max-width: 560px; }
#view-export .export-grid { grid-template-columns: 1fr; gap: 12px; }
#view-export .tool-panel { padding: 20px 22px; }
#view-export .field-wide,
#view-export .transparent-field,
#view-export .export-resolution-field,
#view-export .export-submit { grid-column: 1; }
#view-export .export-resolution-field { align-self: end; }
#view-export .export-submit { width: 100%; align-self: end; justify-self: stretch; margin-bottom: 0; }
#view-export .form-message { min-height: 0; margin-top: 10px; }
#view-status .query-bar { max-width: 640px; margin: 0 auto; }
.bioi-form { max-width: 640px; margin: 0 auto; }
.bioi-form .primary-btn { width: 100%; margin-top: 16px; }
.bioi-note { margin: 12px 0 0; color: var(--muted); font-size: 13px; text-align: center; }
.bioi-error-body { display: grid; gap: 14px; }
.bioi-error-body ol { margin: 0; padding-left: 22px; }
.bioi-error-reason { margin: 0; color: var(--red); font-weight: 700; }
.bioi-error-image { max-height: 420px; object-fit: contain; border: 1px solid var(--line); }
.module-api-status { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 14px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 6px; background: #fafbfb; font-size: 13px; }
.module-api-status strong { flex-basis: 100%; }
.module-api-status.ok strong { color: var(--green); }
.module-api-status.bad strong { color: var(--red); }

@media (max-width: 700px) {
    .shell { width: min(100% - 24px, 1080px); }
    .header-inner { grid-template-columns: 1fr; min-height: 62px; }
    .brand { font-size: 17px; }
    .mode-switch { position: static; width: min(100%, 390px); grid-template-columns: repeat(4, minmax(0, 1fr)); justify-self: center; box-shadow: none; }
    .icon-link { grid-column: 2; grid-row: 1; }
    .main-shell { padding: 34px 0 96px; }
    .workspace-head { align-items: flex-start; }
    .workspace h1 { font-size: 30px; }
    .rule-badge { max-width: 145px; text-align: center; }
    .tool-panel { padding: 20px 16px; }
    .form-grid, .export-grid, .query-bar, .status-results { grid-template-columns: 1fr; }
    .field-wide, .transparent-field, .export-resolution-field, .export-submit { grid-column: 1; }
    #export-format { display: none; }
    .mobile-format-options { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6px; }
    .mobile-format-btn { min-width: 0; min-height: 44px; padding: 0 4px; border: 1px solid #c9d1d8; border-radius: 6px; color: var(--muted); background: #fff; font-size: 14px; cursor: pointer; }
    .mobile-format-btn.active { border-color: var(--blue); color: #fff; background: var(--blue); font-weight: 700; }
    .export-submit { justify-self: stretch; }
    .task-summary { align-items: flex-start; flex-direction: column; gap: 2px; }
    .export-task-row { grid-template-columns: 72px 58px 1fr; gap: 6px 8px; }
    .export-task-row .task-status { grid-column: 1 / 3; }
    .export-task-row .task-action { grid-column: 3; justify-content: flex-end; }
    .export-result-card, .compact-result { grid-template-columns: 1fr; }
    .result-image { grid-row: auto; }
    .result-image img { max-height: 360px; }
    .result-download { flex: 1 1 150px; justify-content: center; }
    .modal-dialog { max-height: calc(100vh - 20px); margin: 10px auto; }
    .modal-content { max-height: calc(100vh - 20px); }
    #view-key .tool-panel { padding: 16px; }
    #view-key .form-grid { grid-template-columns: 1fr; }
    #view-upgrade .workspace-head,
    #view-export .workspace-head,
    #view-status .workspace-head { align-items: center; }
    #view-upgrade h1,
    #view-export h1,
    #view-status h1 { font-size: 26px; }
    #view-bioi h1 { font-size: 26px; }
    .bioi-form { padding: 18px 16px; }
    #view-upgrade .tool-panel { grid-template-columns: 1fr; }
    #view-upgrade .form-message { grid-column: 1; }
    .status-line { grid-template-columns: 54px 42px minmax(76px, 1fr) auto; gap: 4px; font-size: 12px; }
    .status-line > strong, .status-line > span { min-width: 0; white-space: nowrap; }
    .status-line-time { font-variant-numeric: tabular-nums; }
    .status-line-links { justify-content: flex-end; }
    .status-line-error { justify-self: end; }
    .status-line .failure-detail-btn { min-height: 32px; padding: 4px 6px; font-size: 12px; }
    .desktop-label { display: none; }
    .mobile-label { display: inline; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}