:root {
    --bg: #f6f8fc;
    --panel: rgba(255, 255, 255, 0.94);
    --panel-strong: #ffffff;
    --panel-border: rgba(15, 23, 42, 0.08);
    --text: #10203a;
    --muted: #778196;
    --accent: #6f8dff;
    --accent-deep: #4d6dff;
    --accent-soft: #edf2ff;
    --shadow: 0 18px 46px rgba(15, 23, 42, 0.08);
    --radius: 24px;
    --sidebar-width: clamp(260px, 24vw, 324px);
    --topbar-height: 78px;
    --composer-bottom: 18px;
    --app-height: 100dvh;
    --keyboard-offset: 0px;
}

* { box-sizing: border-box; }

html,
body {
    height: 100%;
    min-height: 100%;
}

body {
    height: var(--app-height);
    min-height: var(--app-height);
    margin: 0;
    color: var(--text);
    font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    background:
        radial-gradient(circle at 50% 16%, rgba(111, 141, 255, 0.08), transparent 24%),
        linear-gradient(180deg, #fcfdff 0%, #f3f6fb 100%);
    overflow: hidden;
}

button,
input,
textarea,
select {
    font: inherit;
}

button {
    border: none;
}

.app-shell {
    height: var(--app-height);
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
    gap: 14px;
    padding: 16px;
}

body[data-onboarding-visible="true"] .app-shell {
    visibility: hidden;
}

.survey-experience {
    position: fixed;
    inset: 0;
    z-index: 40;
    overflow: auto;
    padding: 24px;
    background:
        radial-gradient(circle at 18% 16%, rgba(111, 141, 255, 0.14), transparent 28%),
        linear-gradient(180deg, #fdfefe 0%, #eef4ff 100%);
}

.survey-shell {
    width: min(960px, 100%);
    margin: 0 auto;
    min-height: calc(var(--app-height) - 48px);
    display: grid;
    align-items: center;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    min-height: var(--topbar-height);
    padding: 16px 18px;
    border-radius: 28px;
    background: rgba(255, 255, 255, 0.76);
    border: 1px solid rgba(15, 23, 42, 0.06);
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.04);
    backdrop-filter: blur(14px);
    z-index: 20;
}

.brand,
.session-brand,
.topbar-actions,
.panel-header,
.toolbar-footer,
.config-strip,
.result-settings,
.composer-actions,
.composer-buttons,
.modal-actions,
.history-header,
.session-row,
.icon-action-row {
    display: flex;
    align-items: center;
}

.brand,
.session-brand {
    gap: 12px;
}

.brand-copy h1 {
    margin: 0;
    font-size: clamp(24px, 3vw, 34px);
}

.eyebrow,
.panel-header p,
.session-brand p,
.file-status,
.document-meta,
.modal-card p,
.composer-hero p,
.pending-upload-meta,
.empty-tip {
    color: var(--muted);
}

.eyebrow {
    margin: 0 0 4px;
    font-size: 13px;
}

h1,
h2,
h3,
p {
    margin: 0;
}

h2 {
    font-size: clamp(20px, 2.5vw, 28px);
}

h3 {
    font-size: 17px;
}

.brand-mark,
.hero-mark {
    width: 42px;
    height: 42px;
    border-radius: 15px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, #5f84ff 0%, #7ba0ff 100%);
    color: #fff;
    font-weight: 700;
    box-shadow: 0 12px 26px rgba(95, 132, 255, 0.24);
    flex: 0 0 auto;
}

.small-brand-mark {
    width: 34px;
    height: 34px;
    border-radius: 12px;
}

.panel {
    background: var(--panel);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
}

.main-shell {
    min-height: 0;
}

.status-pill,
.ghost-button,
.primary-button,
.upload-button,
.mode-card,
.mode-pill,
.icon-button,
.send-button,
.nav-action-button,
.session-item,
.choice-button,
.message-icon-button {
    cursor: pointer;
    transition: transform 0.18s ease, background-color 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.status-pill {
    padding: 8px 12px;
    border-radius: 16px;
    background: #eef3ff;
    color: var(--accent-deep);
    font-size: 13px;
    flex: 0 0 auto;
}

.status-pill.connected {
    background: var(--accent-soft);
}

.icon-button,
.ghost-button,
.upload-button,
.mode-pill,
.choice-button,
.message-icon-button {
    border: 1px solid rgba(15, 23, 42, 0.08);
    background: #fff;
    color: var(--text);
}

.ghost-button,
.upload-button,
.mode-pill {
    padding: 10px 16px;
    border-radius: 18px;
}

.primary-button {
    padding: 11px 18px;
    border-radius: 18px;
    color: #fff;
    background: var(--accent-deep);
    box-shadow: 0 10px 20px rgba(77, 109, 255, 0.2);
}

.icon-button {
    width: 40px;
    height: 40px;
    border-radius: 14px;
    display: inline-grid;
    place-items: center;
    background: #fff;
    font-size: 18px;
}

.large-icon-button {
    width: 46px;
    height: 46px;
    border-radius: 16px;
}

.small-icon-button {
    width: 30px;
    height: 30px;
    border-radius: 10px;
    font-size: 15px;
}

.send-button {
    width: 52px;
    height: 52px;
    border-radius: 18px;
    display: grid;
    place-items: center;
    font-size: 28px;
    color: #fff;
    background: linear-gradient(135deg, #88a0ff 0%, #6f8dff 100%);
    box-shadow: 0 12px 28px rgba(111, 141, 255, 0.24);
}

.nav-action-button {
    width: 100%;
    justify-content: flex-start;
    gap: 10px;
    padding: 12px 14px;
    border-radius: 18px;
    background: #fff;
    border: 1px solid rgba(15, 23, 42, 0.08);
    color: var(--text);
}

.nav-icon {
    width: 24px;
    display: inline-grid;
    place-items: center;
    color: var(--accent-deep);
}

.mode-card:hover,
.ghost-button:hover,
.primary-button:hover,
.upload-button:hover,
.mode-pill:hover,
.icon-button:hover,
.send-button:hover,
.nav-action-button:hover,
.choice-button:hover,
.message-icon-button:hover,
.session-item:hover {
    transform: translateY(-1px);
}

.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.traditional-layout {
    height: 100%;
    min-height: 0;
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    overflow: auto;
    padding-bottom: var(--keyboard-offset);
    padding-right: 2px;
    scroll-padding-bottom: calc(20px + var(--keyboard-offset));
}

.trad-panel {
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 22px;
}

.panel-header {
    justify-content: space-between;
    gap: 12px;
}

.config-strip {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.field {
    display: grid;
    gap: 8px;
}

.field span {
    color: var(--muted);
    font-size: 14px;
}

.field-label {
    color: var(--muted);
    font-size: 14px;
}

.select-current-value {
    color: var(--muted);
    font-size: 13px;
    line-height: 1.5;
}

.compact-field {
    min-width: 0;
}

.field-fill {
    flex: 1;
    min-height: 0;
}

.result-editor-wrap {
    position: relative;
    display: grid;
    gap: 8px;
    min-height: 0;
}

.fullscreen-editor-button {
    position: absolute;
    right: 14px;
    bottom: 44px;
    z-index: 2;
    width: 42px;
    height: 42px;
    border: 0;
    border-radius: 14px;
    background: rgba(15, 23, 42, 0.78);
    color: #fff;
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.22);
}

.fullscreen-editor-button:hover,
.fullscreen-editor-button:focus-visible {
    background: rgba(79, 104, 255, 0.94);
}

.fullscreen-editor-button:disabled {
    opacity: 0.48;
    cursor: not-allowed;
}

textarea,
select {
    width: 100%;
    border-radius: 18px;
    border: 1px solid rgba(15, 23, 42, 0.1);
    background: #fff;
    color: var(--text);
}

textarea,
select {
    padding: 14px var(--braille-editor-padding-x);
}

textarea {
    resize: none;
    line-height: 1.75;
}

textarea:focus,
select:focus,
input:focus {
    outline: none;
    border-color: rgba(111, 141, 255, 0.46);
    box-shadow: 0 0 0 3px rgba(111, 141, 255, 0.12);
}

.input-wrap {
    flex: 1;
    min-height: 0;
}

#sourceText,
.result-editor {
    min-height: 100%;
}

.trad-panel .field-fill textarea {
    min-height: clamp(320px, 50vh, 620px);
}

.document-card {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    min-height: 182px;
    padding: 20px;
    border-radius: 22px;
    background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
    border: 1px solid rgba(111, 141, 255, 0.14);
}

.document-card-main {
    min-width: 0;
}

.document-label {
    font-size: 13px;
    color: var(--accent-deep);
    margin-bottom: 8px;
}

.document-meta {
    margin-top: 8px;
    line-height: 1.6;
}

.toolbar-footer {
    justify-content: space-between;
    gap: 12px;
    margin-top: auto;
    flex-wrap: wrap;
}

.upload-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.shortcut-hint {
    display: inline-flex;
    align-items: center;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(111, 141, 255, 0.08);
    color: var(--accent-deep);
    font-size: 12px;
    line-height: 1;
    white-space: nowrap;
}

.shortcut-hint--compact {
    padding-inline: 8px;
}

#normalWordFile,
#streamWordFile {
    display: none;
}

.result-settings {
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px solid rgba(15, 23, 42, 0.06);
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
}

.mode-pill-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.mode-pill.active {
    background: var(--accent-soft);
    color: var(--accent-deep);
    border-color: rgba(111, 141, 255, 0.2);
}

.icon-action-row {
    gap: 10px;
}

.braille-editor-tools {
    display: grid;
    gap: 10px;
}

.braille-editor-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.braille-input-status {
    margin: 0;
    min-height: 20px;
    color: var(--muted);
    font-size: 12px;
    line-height: 1.5;
    text-align: right;
}

.braille-input-status.is-previewing {
    color: var(--accent-deep);
    font-weight: 600;
}

.braille-keyboard-dock {
    min-width: 0;
    min-height: 0;
}

.braille-editor-hint,
.braille-keyboard-summary,
.braille-keyboard-page {
    color: var(--muted);
    line-height: 1.7;
}

.braille-keyboard {
    display: grid;
    gap: 14px;
    padding: 18px;
    border-radius: 24px;
    border: 1px solid rgba(111, 141, 255, 0.14);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(244, 248, 255, 0.98) 100%);
    box-shadow: 0 18px 36px rgba(15, 23, 42, 0.08);
    max-height: min(46dvh, 440px);
    overflow: auto;
    align-content: start;
}

.braille-keyboard-header,
.braille-keyboard-nav,
.braille-keyboard-ops {
    display: flex;
    align-items: center;
}

.braille-keyboard-header {
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
}

.braille-keyboard-copy {
    display: grid;
    gap: 6px;
}

.braille-keyboard-copy h3 {
    font-size: 18px;
}

.braille-keyboard-head-controls {
    display: grid;
    gap: 10px;
    justify-items: end;
}

.braille-keyboard-display-toggle {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.braille-keyboard-nav,
.braille-keyboard-ops {
    gap: 10px;
    flex-wrap: wrap;
}

.braille-keyboard-page {
    min-width: 84px;
    text-align: center;
}

.braille-keyboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(84px, 1fr));
    gap: 10px;
}

.braille-key {
    min-height: 90px;
    padding: 10px 8px;
    border-radius: 18px;
    border: 1px solid rgba(15, 23, 42, 0.08);
    background: #fff;
    display: grid;
    gap: 4px;
    justify-items: center;
    align-content: center;
    text-align: center;
}

.braille-key-glyph {
    font-size: 30px;
    line-height: 1;
    color: var(--text);
}

.braille-key-glyph--ascii {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.braille-key-meta,
.braille-key-ascii {
    color: var(--muted);
    font-size: 12px;
    line-height: 1.4;
}

.braille-key-ascii {
    color: var(--accent-deep);
    font-weight: 600;
}

.braille-key-empty .braille-key-glyph {
    font-size: 20px;
    letter-spacing: 0.06em;
}

body[data-braille-keyboard-open="true"] #normalResultEditor {
    min-height: clamp(180px, 24vh, 280px);
    max-height: 30dvh;
}

.chat-layout {
    position: relative;
    height: 100%;
    min-height: 0;
    display: grid;
    grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
    gap: 16px;
    align-items: stretch;
}

.session-panel {
    width: 100%;
    min-height: 0;
    overflow: hidden;
    box-shadow: 0 22px 48px rgba(15, 23, 42, 0.08);
}

.session-panel-inner {
    height: 100%;
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 18px;
    overflow: auto;
}

.session-brand {
    margin-bottom: 2px;
}

.nav-actions {
    display: grid;
    gap: 10px;
}

.history-header {
    justify-content: space-between;
    gap: 10px;
    color: var(--muted);
    font-size: 14px;
}

.session-list {
    display: grid;
    gap: 10px;
}

.session-row {
    gap: 8px;
    align-items: stretch;
}

.session-item {
    flex: 1;
    padding: 12px 14px;
    border-radius: 16px;
    border: 1px solid rgba(15, 23, 42, 0.08);
    background: #fff;
    text-align: left;
}

.session-item.active {
    background: var(--accent-soft);
    border-color: rgba(111, 141, 255, 0.22);
}

.session-item small {
    display: block;
    margin-top: 6px;
    color: var(--muted);
    line-height: 1.5;
}

.session-delete-button {
    flex: 0 0 auto;
}

.chat-main {
    position: relative;
    width: 100%;
    height: 100%;
    min-width: 0;
    min-height: 0;
    overflow: hidden;
    border-radius: 28px;
    background: rgba(255, 255, 255, 0.58);
    border: 1px solid rgba(15, 23, 42, 0.05);
}

.chat-scroll {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    padding: 20px 24px calc(224px + var(--keyboard-offset));
}

.chat-main--empty .chat-scroll {
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-messages {
    width: min(100%, clamp(320px, 92vw, 980px));
    min-width: 0;
    margin: 0 auto;
    display: grid;
    gap: 12px;
}

.chat-main--empty .chat-messages {
    min-height: 0;
}

.message-block {
    display: grid;
    gap: 6px;
}

.chat-item {
    display: flex;
}

.chat-item.user {
    justify-content: flex-end;
}

.chat-item.assistant {
    justify-content: flex-start;
}

.chat-bubble {
    max-width: min(92%, 860px);
    padding: 8px 12px;
    border-radius: 18px;
    line-height: 1.7;
    white-space: pre-wrap;
    word-break: break-word;
}

.chat-item.user .chat-bubble {
    background: #edf2ff;
    color: #2547c9;
    border-top-right-radius: 8px;
}

.chat-item.assistant .chat-bubble {
    background: transparent;
    border-radius: 0;
    padding-left: 0;
    padding-right: 0;
}

.user-message-card,
.doc-message-card,
.download-card,
.config-card {
    border-radius: 18px;
    border: 1px solid rgba(111, 141, 255, 0.14);
    background: #fff;
}

.user-message-card,
.doc-message-card,
.download-card {
    padding: 14px 16px;
}

.message-actions {
    display: flex;
    gap: 8px;
    margin-top: 6px;
}

.message-icon-button {
    width: 32px;
    height: 32px;
    border-radius: 10px;
    color: var(--muted);
    background: #fff;
}

.message-icon-button.active {
    color: var(--accent-deep);
    border-color: rgba(111, 141, 255, 0.22);
    background: var(--accent-soft);
}

.config-card {
    max-width: 980px;
    margin: 0 auto;
    display: grid;
    gap: 14px;
    padding: 16px;
}

.choice-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.choice-button {
    padding: 11px 15px;
    border-radius: 16px;
    background: var(--accent-soft);
    color: var(--accent-deep);
}

.inline-custom-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.inline-custom-row input {
    flex: 1 1 180px;
    padding: 13px 14px;
    border-radius: 16px;
    border: 1px solid rgba(15, 23, 42, 0.1);
}

.composer-layer {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 6;
}

.composer-shell {
    width: min(100%, clamp(320px, 92vw, 980px));
    pointer-events: auto;
}

.composer-shell--center {
    position: relative;
    margin: 0 auto;
}

.chat-main--empty .composer-layer {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

body[data-layout-mode="stacked"][data-keyboard-open="true"] .chat-main--empty .composer-layer {
    align-items: flex-end;
    padding: 0 10px calc(env(safe-area-inset-bottom) + 8px + var(--keyboard-offset));
}

.chat-main--active .composer-layer {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 0 20px calc(var(--composer-bottom) + var(--keyboard-offset));
}

.composer-hero {
    display: grid;
    justify-items: center;
    max-width: 620px;
    margin: 0 auto 18px;
    text-align: center;
    animation: heroFadeIn 0.5s ease-out both;
}

.composer-hero .hero-mark {
    margin: 0 auto 14px;
}

.composer-hero p {
    margin-top: 10px;
    line-height: 1.72;
}

.composer-hero-title,
.composer-hero-subtitle {
    animation: heroSlideUp 0.58s ease-out both;
}

.composer-hero-subtitle {
    animation-delay: 0.1s;
}

.chat-main--active .composer-hero {
    display: none;
}

.composer-box {
    padding: 14px 16px;
    border-radius: 28px;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(15, 23, 42, 0.08);
    box-shadow: 0 24px 48px rgba(15, 23, 42, 0.1);
}

.composer-box textarea {
    min-height: 88px;
    border: none;
    padding: 0;
    background: transparent;
}

.composer-actions {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    justify-content: space-between;
    gap: 12px;
    margin-top: 10px;
    align-items: flex-end;
}

.composer-buttons {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-left: auto;
}

.composer-aux {
    flex: 1;
}

.pending-upload-card {
    margin-bottom: 10px;
    padding: 14px 16px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(111, 141, 255, 0.14);
    box-shadow: var(--shadow);
}

.pending-upload-card strong {
    display: block;
    margin-bottom: 6px;
}

.chat-main--active .composer-box {
    padding: 12px 14px;
    border-radius: 24px;
}

.chat-main--active .composer-box textarea {
    min-height: 68px;
    line-height: 1.6;
}

.chat-main--active .composer-actions {
    margin-top: 8px;
}

.modal-mask {
    position: fixed;
    inset: 0;
    z-index: 30;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(15, 23, 42, 0.38);
    backdrop-filter: blur(10px);
}

.modal-card {
    width: min(760px, 100%);
    padding: 28px;
    border-radius: 28px;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 30px 80px rgba(15, 23, 42, 0.2);
}

.modal-card p {
    margin-top: 8px;
    line-height: 1.8;
}

.survey-step {
    display: grid;
    gap: 18px;
}

.survey-panel {
    padding: 30px;
    border-radius: 30px;
    border: 1px solid rgba(15, 23, 42, 0.08);
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 30px 80px rgba(15, 23, 42, 0.12);
}

.survey-title {
    margin: 0;
    font-size: clamp(28px, 4vw, 42px);
}

.survey-lead {
    color: var(--muted);
    line-height: 1.9;
}

.survey-badge {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    padding: 7px 12px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent-deep);
    font-size: 13px;
    font-weight: 600;
}

.survey-intro-note,
.survey-success-card,
.survey-fieldset,
.survey-support-card,
.modal-support-card {
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 22px;
    background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}

.survey-intro-note,
.survey-success-card,
.survey-support-card,
.modal-support-card {
    padding: 18px 20px;
}

.survey-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
}

.survey-form {
    display: grid;
    gap: 16px;
}

.survey-form input[type="text"] {
    width: 100%;
    border: 1px solid rgba(15, 23, 42, 0.1);
    border-radius: 16px;
    padding: 14px 16px;
    background: #fff;
}

.survey-fieldset {
    margin: 0;
    padding: 18px 20px;
}

.survey-fieldset legend {
    padding: 0;
    font-weight: 600;
    margin-bottom: 12px;
}

.survey-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    color: var(--text);
}

.survey-option input {
    flex: 0 0 auto;
}

.survey-success-card {
    justify-items: center;
    text-align: center;
}

.survey-support-card,
.modal-support-card {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 18px;
    align-items: center;
}

.survey-support-copy,
.modal-support-copy {
    display: grid;
    gap: 8px;
}

.survey-support-copy p,
.modal-support-copy p {
    margin: 0;
}

.survey-support-copy a,
.modal-support-copy a {
    color: var(--accent-deep);
    word-break: break-all;
}

.survey-qr-image {
    width: min(260px, 72vw);
    max-width: 100%;
    border-radius: 18px;
    border: 1px solid rgba(15, 23, 42, 0.08);
    background: #fff;
}

.modal-support-image {
    width: 128px;
    max-width: 100%;
    border-radius: 16px;
    border: 1px solid rgba(15, 23, 42, 0.08);
    background: #fff;
}

.mode-select-grid {
    margin-top: 22px;
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.mode-card {
    flex: 1 1 280px;
    padding: 20px;
    border-radius: 22px;
    text-align: left;
    background: linear-gradient(180deg, #fff 0%, #f8fbff 100%);
    border: 1px solid rgba(15, 23, 42, 0.08);
}

.mode-card span,
.mode-card strong {
    display: block;
}

.mode-card span {
    margin-top: 8px;
    color: var(--muted);
    line-height: 1.7;
}

.settings-group {
    display: grid;
    gap: 12px;
    margin-top: 20px;
}

.setting-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    border-radius: 18px;
    border: 1px solid rgba(15, 23, 42, 0.08);
    background: #fff;
}

.session-overlay {
    position: fixed;
    inset: 0;
    z-index: 14;
    background: rgba(15, 23, 42, 0.36);
    backdrop-filter: blur(6px);
}

.stream-only {
    display: inline-grid;
}

@keyframes heroFadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes heroSlideUp {
    from {
        opacity: 0;
        transform: translateY(18px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (min-width: 1201px) {
    .session-overlay {
        display: none !important;
    }

    .trad-panel {
        min-height: calc(var(--app-height) - 146px);
    }

    .session-panel {
        position: relative;
    }
}

@media (min-width: 761px) and (max-width: 1200px) {
    .app-shell {
        padding: 14px;
    }

    .traditional-layout {
        grid-template-columns: 1fr;
        gap: 14px;
        padding-right: 0;
    }

    .trad-panel {
        min-height: auto;
        padding: 20px;
    }

    .trad-panel .field-fill textarea {
        min-height: clamp(220px, 32vh, 360px);
    }

    .chat-layout {
        grid-template-columns: minmax(0, 1fr);
        gap: 0;
    }

    .session-panel {
        position: fixed;
        top: calc(14px + var(--topbar-height) + 14px);
        left: 14px;
        bottom: 14px;
        width: min(38vw, 340px);
        max-width: calc(100vw - 28px);
        z-index: 15;
        box-shadow: 0 28px 60px rgba(15, 23, 42, 0.16);
    }

    .chat-main {
        width: 100%;
        min-height: calc(var(--app-height) - var(--topbar-height) - 42px);
    }

    .chat-scroll {
        padding-inline: clamp(16px, 3vw, 24px);
        padding-bottom: calc(214px + var(--keyboard-offset));
    }

    .composer-shell {
        width: min(100%, 900px);
    }

    .braille-keyboard {
        padding: 16px;
        border-radius: 20px;
    }

    .braille-keyboard-grid {
        grid-template-columns: repeat(auto-fit, minmax(76px, 1fr));
    }

    .braille-keyboard-nav,
    .braille-keyboard-ops {
        width: 100%;
        justify-content: space-between;
    }

    .braille-keyboard-page {
        flex: 1 1 auto;
        min-width: 0;
    }

    body[data-layout-mode="wide"][data-braille-keyboard-open="true"] #normalResultEditor {
        min-height: clamp(160px, 20vh, 260px);
        max-height: 26dvh;
    }
}

@media (max-width: 760px) {
    :root {
        --topbar-height: 68px;
        --sidebar-width: min(84vw, 360px);
        --composer-bottom: 10px;
    }

    .app-shell {
        padding: 12px;
        gap: 12px;
    }

    .topbar {
        padding: 12px 14px;
        border-radius: 22px;
    }

    .brand-copy .eyebrow,
    .brand-copy h1 {
        display: none;
    }

    .traditional-layout {
        grid-template-columns: 1fr;
        gap: 12px;
        padding-right: 0;
        align-content: start;
    }

    .trad-panel {
        min-height: auto;
        padding: 18px;
        gap: 14px;
        border-radius: 22px;
    }

    .config-strip,
    .toolbar-footer,
    .result-settings,
    .upload-row {
        flex-direction: column;
        align-items: stretch;
    }

    .config-strip {
        grid-template-columns: 1fr;
    }

    .traditional-layout {
        scroll-padding-bottom: calc(20px + var(--keyboard-offset));
    }

    .trad-panel .panel-header h2 {
        font-size: 19px;
    }

    .trad-panel .panel-header p {
        font-size: 13px;
        line-height: 1.6;
    }

    .trad-panel .field span {
        font-size: 13px;
    }

    .trad-panel textarea,
    .trad-panel select {
        border-radius: 16px;
        font-size: 15px;
    }

    .trad-panel .field-fill textarea {
        min-height: 180px;
        max-height: 34dvh;
    }

    #sourceText,
    .result-editor {
        min-height: 180px;
    }

    .document-card {
        min-height: 136px;
        padding: 16px;
        border-radius: 18px;
    }

    .toolbar-footer {
        margin-top: 0;
        gap: 10px;
    }

    .upload-row {
        gap: 8px;
    }

    .upload-button,
    .ghost-button,
    .mode-pill {
        width: 100%;
        justify-content: center;
        text-align: center;
    }

    .result-settings {
        gap: 10px;
    }

    .braille-editor-tools {
        gap: 8px;
    }

    .braille-editor-tools .ghost-button,
    .braille-keyboard-ops .ghost-button {
        width: 100%;
    }

    .braille-keyboard {
        position: relative;
        bottom: auto;
        z-index: auto;
        margin-top: 8px;
        padding: 14px;
        border-radius: 22px;
        box-shadow: 0 12px 30px rgba(15, 23, 42, 0.1);
        max-height: 44dvh;
    }

    .braille-keyboard-header,
    .braille-keyboard-ops {
        display: grid;
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .braille-keyboard-nav {
        display: grid;
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 8px;
        align-items: stretch;
    }

    .braille-keyboard-nav .icon-button {
        width: 100%;
        height: 44px;
    }

    .braille-keyboard-page {
        display: grid;
        place-items: center;
        min-height: 44px;
        padding: 0 8px;
        border-radius: 14px;
        background: rgba(111, 141, 255, 0.08);
        min-width: 0;
    }

    .braille-keyboard-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 8px;
    }

    .braille-key {
        min-height: 78px;
        padding: 8px 6px;
        border-radius: 16px;
    }

    .braille-key-glyph {
        font-size: 26px;
    }

    .braille-key-glyph--ascii {
        font-size: 20px;
    }

    body[data-layout-mode="stacked"][data-braille-keyboard-open="true"] #normalResultEditor {
        min-height: 140px;
        max-height: 22dvh;
    }

    .mode-pill-group {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        width: 100%;
    }

    .icon-action-row {
        width: 100%;
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .icon-action-row .icon-button {
        width: 100%;
    }

    .chat-layout {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .session-panel {
        position: fixed;
        top: calc(12px + var(--topbar-height) + 10px);
        right: 12px;
        bottom: 12px;
        width: min(84vw, 360px);
        max-width: calc(100vw - 24px);
        z-index: 15;
        border-radius: 24px;
        background: rgba(255, 255, 255, 0.98);
        box-shadow: 0 26px 60px rgba(15, 23, 42, 0.18);
    }

    .session-panel-inner {
        padding: 14px;
    }

    .chat-main {
        width: 100%;
        min-height: calc(var(--app-height) - var(--topbar-height) - 34px);
        border-radius: 22px;
    }

    .chat-scroll {
        padding: 14px 14px calc(172px + var(--keyboard-offset));
    }

    .chat-main--active .composer-layer {
        padding: 0 10px calc(env(safe-area-inset-bottom) + 8px + var(--keyboard-offset));
    }

    .composer-shell {
        width: 100%;
    }

    .composer-box {
        border-radius: 22px;
        padding: 10px 12px;
    }

    .composer-box textarea {
        min-height: 56px;
    }

    .chat-main--active .composer-box {
        padding: 9px 11px;
        border-radius: 20px;
    }

    .chat-main--active .composer-box textarea {
        min-height: 44px;
    }

    .chat-main--active .composer-actions {
        margin-top: 4px;
    }

    .composer-actions {
        display: grid;
        grid-template-columns: minmax(0, 1fr) auto;
        gap: 8px;
        align-items: end;
    }

    .composer-buttons {
        gap: 8px;
        justify-content: flex-end;
        align-self: end;
    }

    .composer-buttons .icon-button,
    .composer-buttons .send-button {
        flex: 0 0 auto;
    }

    .composer-actions .file-status {
        min-width: 0;
        line-height: 1.5;
        padding-bottom: 2px;
    }

    .chat-bubble {
        max-width: 100%;
    }

    .composer-hero h2 {
        font-size: 18px;
    }

    .composer-hero p {
        font-size: 14px;
    }

    .survey-experience {
        padding: 14px;
    }

    .survey-shell {
        min-height: calc(var(--app-height) - 28px);
    }

    .survey-step {
        gap: 14px;
    }

    .survey-panel {
        padding: 18px;
        border-radius: 22px;
    }

    .survey-fieldset,
    .survey-intro-note,
    .survey-success-card,
    .survey-support-card,
    .modal-support-card {
        padding: 16px;
        border-radius: 18px;
    }

    .survey-fieldset legend {
        margin-bottom: 8px;
    }

    .survey-support-card,
    .modal-support-card {
        grid-template-columns: 1fr;
        justify-items: center;
        text-align: center;
    }

    .modal-support-image {
        width: min(180px, 58vw);
    }
}

body[data-layout-mode="wide"] .traditional-layout {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    align-items: stretch;
}

body[data-layout-mode="wide"][data-braille-keyboard-open="true"] .traditional-layout {
    grid-template-columns: minmax(300px, 34vw) minmax(0, 1fr) minmax(0, 1fr);
}

body[data-layout-mode="wide"] .braille-keyboard-dock {
    grid-column: 1;
    grid-row: 1;
    min-height: 0;
}

body[data-layout-mode="wide"] .braille-keyboard-dock .braille-keyboard {
    height: 100%;
    max-height: min(720px, calc(var(--app-height) - 146px));
}

body[data-layout-mode="wide"][data-braille-keyboard-open="true"] .traditional-layout > .trad-panel:first-of-type {
    grid-column: 2;
}

body[data-layout-mode="wide"][data-braille-keyboard-open="true"] .traditional-layout > .trad-panel:last-of-type {
    grid-column: 3;
}

body[data-layout-mode="wide"] .config-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

body[data-layout-mode="wide"] .trad-panel {
    min-height: min(720px, calc(var(--app-height) - 146px));
}

body[data-layout-mode="wide"] .trad-panel .field-fill textarea {
    min-height: clamp(260px, 44vh, 620px);
    max-height: none;
}

body[data-layout-mode="wide"][data-braille-keyboard-open="true"] #normalResultEditor,
body[data-layout-mode="wide"][data-braille-keyboard-open="true"] #sourceText {
    min-height: clamp(260px, 42vh, 620px);
    max-height: none;
}

body[data-layout-mode="wide"] .chat-layout {
    grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
    gap: 16px;
}

body[data-layout-mode="wide"] .session-panel {
    position: relative;
    inset: auto;
    width: 100%;
    max-width: none;
    border-radius: var(--radius);
    box-shadow: 0 22px 48px rgba(15, 23, 42, 0.08);
}

body[data-layout-mode="wide"] .chat-main {
    min-height: calc(var(--app-height) - var(--topbar-height) - 42px);
}

body[data-layout-mode="wide"] .chat-scroll {
    padding: 20px 24px calc(224px + var(--keyboard-offset));
}

body[data-layout-mode="wide"] .composer-shell {
    width: min(100%, clamp(640px, 78vw, 980px));
}

body[data-layout-mode="wide"] .session-overlay {
    display: none !important;
}

body[data-layout-mode="stacked"] .traditional-layout {
    grid-template-columns: 1fr;
    gap: 12px;
    padding-right: 0;
    align-content: start;
}

body[data-layout-mode="stacked"][data-braille-keyboard-open="true"] .traditional-layout {
    padding-bottom: calc(48dvh + env(safe-area-inset-bottom) + 28px);
}

body[data-layout-mode="stacked"] .braille-keyboard-dock {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: 12px;
    z-index: 18;
    min-height: 0;
}

body[data-layout-mode="stacked"] .braille-keyboard-dock .braille-keyboard {
    max-height: 46dvh;
    height: auto;
    margin: 0;
}

body[data-layout-mode="stacked"] .braille-keyboard-head-controls {
    width: 100%;
    justify-items: stretch;
}

body[data-layout-mode="stacked"] .braille-keyboard-display-toggle {
    justify-content: stretch;
}

body[data-layout-mode="stacked"] .braille-keyboard-display-toggle .mode-pill {
    flex: 1 1 0;
}

body[data-layout-mode="stacked"] .braille-editor-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

body[data-layout-mode="stacked"] .trad-panel {
    min-height: auto;
    padding: clamp(16px, 2.8vw, 20px);
    gap: 14px;
}

body[data-layout-mode="stacked"] .config-strip {
    grid-template-columns: 1fr;
}

body[data-layout-mode="stacked"] .toolbar-footer,
body[data-layout-mode="stacked"] .result-settings,
body[data-layout-mode="stacked"] .upload-row {
    flex-direction: column;
    align-items: stretch;
}

body[data-layout-mode="stacked"] .trad-panel .field-fill textarea {
    min-height: clamp(180px, 30vh, 320px);
    max-height: 40dvh;
}

body[data-layout-mode="stacked"] #sourceText,
body[data-layout-mode="stacked"] .result-editor {
    min-height: 180px;
}

body[data-layout-mode="stacked"][data-braille-keyboard-open="true"] #normalResultEditor,
body[data-layout-mode="stacked"][data-braille-keyboard-open="true"] #sourceText {
    min-height: 180px;
    max-height: 40dvh;
}

body[data-layout-mode="stacked"] .mode-pill-group {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
}

body[data-layout-mode="stacked"] .icon-action-row {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

body[data-layout-mode="stacked"] .icon-action-row .icon-button {
    width: 100%;
}

body[data-layout-mode="stacked"] .chat-layout {
    grid-template-columns: 1fr;
    gap: 0;
}

body[data-layout-mode="stacked"] .session-panel {
    position: fixed;
    top: calc(12px + var(--topbar-height) + 10px);
    right: 12px;
    bottom: 12px;
    left: auto;
    width: min(84vw, 360px);
    max-width: calc(100vw - 24px);
    border-radius: 24px;
    box-shadow: 0 26px 60px rgba(15, 23, 42, 0.18);
    z-index: 15;
}

body[data-layout-mode="stacked"] .chat-main {
    width: 100%;
    min-height: calc(var(--app-height) - var(--topbar-height) - 34px);
    border-radius: 22px;
}

body[data-layout-mode="stacked"] .chat-scroll {
    padding: 14px 14px calc(172px + var(--keyboard-offset));
}

body[data-layout-mode="stacked"] .chat-main--active .composer-layer {
    padding: 0 10px calc(env(safe-area-inset-bottom) + 8px + var(--keyboard-offset));
}

body[data-layout-mode="stacked"] .composer-shell {
    width: 100%;
}

body[data-layout-mode="stacked"] .composer-box {
    padding: 10px 12px;
    border-radius: 22px;
}

body[data-layout-mode="stacked"] .composer-box textarea {
    min-height: 56px;
}

body[data-layout-mode="stacked"] .chat-main--active .composer-box {
    padding: 9px 11px;
    border-radius: 20px;
}

body[data-layout-mode="stacked"] .chat-main--active .composer-box textarea {
    min-height: 44px;
}

body[data-layout-mode="stacked"] .chat-main--active .composer-actions {
    margin-top: 4px;
}

body[data-layout-mode="stacked"] .composer-actions {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
    align-items: end;
}

body[data-layout-mode="stacked"] .composer-buttons {
    justify-content: flex-end;
    gap: 8px;
    margin-left: auto;
    align-self: end;
}

body[data-layout-mode="stacked"] .composer-buttons .icon-button,
body[data-layout-mode="stacked"] .composer-buttons .send-button {
    flex: 0 0 auto;
}

body[data-layout-mode="stacked"] .composer-actions .file-status {
    min-width: 0;
    line-height: 1.5;
    padding-bottom: 2px;
}

body[data-layout-mode="stacked"] .session-overlay {
    inset: 0;
}


body.fullscreen-editor-open {
    overflow: hidden;
}

.fullscreen-editor-modal {
    position: fixed;
    inset: 0;
    z-index: 1200;
    display: flex;
    background: rgba(15, 23, 42, 0.72);
    backdrop-filter: blur(10px);
    padding: max(14px, env(safe-area-inset-top)) max(14px, env(safe-area-inset-right)) max(14px, env(safe-area-inset-bottom)) max(14px, env(safe-area-inset-left));
}

.fullscreen-editor-modal.hidden {
    display: none;
}

.fullscreen-editor-shell {
    width: 100%;
    height: 100%;
    min-height: 0;
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
    gap: 12px;
    border-radius: 24px;
    background: #f8fbff;
    border: 1px solid rgba(255, 255, 255, 0.64);
    box-shadow: 0 28px 80px rgba(15, 23, 42, 0.34);
    padding: 16px;
}

.fullscreen-editor-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
}

.fullscreen-editor-header h2 {
    margin: 0 0 6px;
    font-size: clamp(20px, 3vw, 28px);
}

.fullscreen-editor-header p {
    margin: 0;
    color: var(--muted);
    line-height: 1.6;
}

.fullscreen-editor-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.fullscreen-editor-board {
    --braille-cell-size: 1ch;
    --braille-line-height: 1.7;
    --braille-paper-cells: 30;
    --braille-editor-cells: calc(var(--braille-paper-cells) + 1);
    --braille-editor-padding-x: 16px;
    --line-number-digits: 2;
    width: min(100%, calc((var(--line-number-digits) + 2) * 1ch + var(--braille-editor-cells) * var(--braille-cell-size) + var(--braille-editor-padding-x) * 2));
    justify-self: center;
    min-height: 0;
    display: grid;
    grid-template-columns: calc((var(--line-number-digits) + 2) * 1ch) minmax(0, calc(var(--braille-editor-cells) * var(--braille-cell-size) + var(--braille-editor-padding-x) * 2));
    grid-template-rows: auto minmax(0, 1fr);
    overflow: hidden;
    border: 1px solid rgba(15, 23, 42, 0.12);
    border-radius: 18px;
    background: #fff;
    font-family: Consolas, "Courier New", "Noto Sans Mono", "DejaVu Sans Mono", monospace;
    font-size: clamp(18px, 2.1vw, 24px);
    font-variant-ligatures: none;
    font-variant-east-asian: normal;
    font-kerning: none;
}

.fullscreen-corner,
.fullscreen-column-ruler,
.fullscreen-line-numbers {
    user-select: none;
    color: rgba(71, 85, 105, 0.92);
    background: #eef4ff;
}

.fullscreen-corner {
    z-index: 4;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 6px;
    border-right: 1px solid rgba(15, 23, 42, 0.1);
    border-bottom: 1px solid rgba(15, 23, 42, 0.1);
    font-size: 13px;
    font-family: "Courier New", Consolas, "Noto Sans Mono", "Segoe UI Symbol", monospace;
}

.fullscreen-column-ruler {
    z-index: 3;
    box-sizing: border-box;
    width: calc(var(--braille-editor-cells) * var(--braille-cell-size) + var(--braille-editor-padding-x) * 2);
    min-width: calc(var(--braille-editor-cells) * var(--braille-cell-size) + var(--braille-editor-padding-x) * 2);
    padding: 8px var(--braille-editor-padding-x) 6px;
    border-bottom: 1px solid rgba(15, 23, 42, 0.1);
    will-change: transform;
}

.fullscreen-ruler-row {
    height: 1.1em;
    line-height: 1.1;
    white-space: pre;
}

.fullscreen-ruler-row span {
    display: inline-block;
    width: var(--braille-cell-size);
    text-align: center;
}

.fullscreen-ruler-spare {
    color: rgba(79, 104, 255, 0.72);
}

.fullscreen-line-numbers {
    z-index: 2;
    min-width: 0;
    padding: 14px 6px 14px 0;
    border-right: 1px solid rgba(15, 23, 42, 0.1);
    text-align: right;
    white-space: pre;
    will-change: transform;
}

.fullscreen-line-numbers div {
    height: calc(1em * var(--braille-line-height));
    line-height: var(--braille-line-height);
}

.fullscreen-textarea-scroll {
    min-width: 0;
    min-height: 0;
    overflow: hidden;
    background-image: linear-gradient(to right, rgba(99, 102, 241, 0.08) 1px, transparent 1px);
    background-size: var(--braille-cell-size) 100%;
    background-position-x: var(--braille-editor-padding-x);
}

.fullscreen-braille-editor {
    display: block;
    box-sizing: border-box;
    width: calc(var(--braille-editor-cells) * var(--braille-cell-size) + var(--braille-editor-padding-x) * 2);
    min-width: calc(var(--braille-editor-cells) * var(--braille-cell-size) + var(--braille-editor-padding-x) * 2);
    height: 100%;
    min-height: 100%;
    resize: none;
    overflow: auto;
    white-space: pre;
    overflow-wrap: normal;
    word-break: normal;
    tab-size: 1;
    padding: 14px var(--braille-editor-padding-x);
    border: 0;
    border-radius: 0;
    box-shadow: none;
    background: transparent;
    color: #0f172a;
    line-height: var(--braille-line-height);
    letter-spacing: 0;
    font: inherit;
    font-variant-ligatures: none;
    font-kerning: none;
    caret-color: #4f68ff;
}

.fullscreen-braille-editor:focus {
    outline: none;
    border: 0;
    box-shadow: inset 0 0 0 2px rgba(79, 104, 255, 0.18);
}

@media (max-width: 720px) {
    .fullscreen-editor-shell {
        border-radius: 18px;
        padding: 10px;
    }

    .fullscreen-editor-header {
        display: grid;
    }

    .fullscreen-editor-actions {
        justify-content: flex-start;
    }

    .fullscreen-editor-board {
        font-size: 18px;
    }
}


/* 全屏盲文编辑：用逐格镜像层显示，textarea 只负责输入和光标，避免不同盲文点位/空方字体宽度不一致。 */
.fullscreen-textarea-scroll {
    position: relative;
    background: #fff;
}

.fullscreen-braille-mirror,
.fullscreen-braille-editor {
    font-family: "Courier New", Consolas, "Noto Sans Mono", monospace;
    font-size: inherit;
    line-height: var(--braille-line-height);
}

.fullscreen-braille-mirror {
    position: absolute;
    inset: 0;
    z-index: 1;
    overflow: hidden;
    padding: 14px var(--braille-editor-padding-x);
    pointer-events: none;
    color: #0f172a;
}

.fullscreen-braille-mirror-row {
    display: grid;
    grid-template-columns: repeat(var(--braille-editor-cells), var(--braille-cell-size));
    height: calc(1em * var(--braille-line-height));
    line-height: var(--braille-line-height);
}

.fullscreen-braille-cell {
    display: flex;
    width: var(--braille-cell-size);
    min-width: var(--braille-cell-size);
    height: calc(1em * var(--braille-line-height));
    align-items: center;
    justify-content: center;
    overflow: visible;
    white-space: pre;
    font-size: 0.92em;
}

.fullscreen-braille-cell.is-empty {
    color: rgba(100, 116, 139, 0.28);
    font-size: 0.72em;
}

.fullscreen-braille-editor {
    position: relative;
    z-index: 2;
    color: transparent !important;
    text-shadow: none !important;
    caret-color: #4f68ff;
    background: transparent !important;
}

.fullscreen-braille-editor::selection {
    background: rgba(79, 104, 255, 0.22);
    color: transparent;
}

.fullscreen-braille-input-status {
    position: fixed;
    left: 24px;
    top: 24px;
    z-index: 2147483647;
    min-width: 0;
    max-width: min(260px, calc(100vw - 16px));
    margin: 0;
    padding: 8px 12px;
    border-radius: 10px;
    background: rgba(15, 23, 42, 0.9);
    color: #fff;
    font-size: 17px;
    line-height: 1.3;
    font-family: "Segoe UI Symbol", "Courier New", Consolas, "Noto Sans Mono", monospace;
    white-space: nowrap;
    box-shadow: 0 14px 34px rgba(15, 23, 42, 0.32);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translate(-50%, 0) scale(0.96);
    transition: opacity 120ms ease, transform 120ms ease, visibility 120ms ease, background 120ms ease;
}

.fullscreen-braille-input-status.is-previewing {
    opacity: 1;
    visibility: visible;
    background: rgba(79, 104, 255, 0.96);
    transform: translate(-50%, 0) scale(1);
}

.fullscreen-braille-keyboard {
    min-height: 0;
    max-height: 32vh;
    overflow: auto;
    border: 1px solid rgba(15, 23, 42, 0.1);
    border-radius: 18px;
    background: #fff;
    padding: 14px;
}

.fullscreen-editor-shell {
    background: #e5e7eb;
}

.fullscreen-editor-board {
    background: #fff;
}

/* 全屏盲文编辑对齐增强：镜像层负责可见字符，每一方固定宽度；空方以浅短横显示，真实 textarea 内容不改变。 */
.fullscreen-braille-mirror {
    width: calc(var(--braille-editor-cells) * var(--braille-cell-size) + var(--braille-editor-padding-x) * 2);
    min-width: calc(var(--braille-editor-cells) * var(--braille-cell-size) + var(--braille-editor-padding-x) * 2);
    will-change: transform;
    transform: translate(0, 0);
}

.fullscreen-braille-editor {
    color: transparent !important;
    -webkit-text-fill-color: transparent;
    caret-color: #4f68ff !important;
    background: transparent !important;
    font-feature-settings: "tnum" 1;
}

.fullscreen-braille-cell.is-empty {
    color: rgba(100, 116, 139, 0.22);
    font-size: 0.68em;
    font-weight: 400;
}

.fullscreen-editor-shell {
    background: #e5e7eb;
}

.fullscreen-editor-board {
    background: #fff;
}

/* 全屏盲文编辑修正：光标以 textarea 的 1ch 步进为准，镜像层同宽；盲文点位不再裁剪。 */
.fullscreen-editor-board {
    --braille-cell-size: 1ch;
}

.fullscreen-braille-cell {
    overflow: visible !important;
    font-size: 0.92em;
}

.fullscreen-braille-cell.is-empty {
    font-size: 0.68em;
}

.fullscreen-editor-shell {
    background: #374151 !important;
}

.fullscreen-editor-modal {
    background: rgba(17, 24, 39, 0.78);
}

.fullscreen-editor-board,
.fullscreen-textarea-scroll {
    background: #fff !important;
}

/* 全屏编辑布局修正：顶栏保持白色，背景用稍深浅灰；纸张无圆角；编辑区按内容完整展开，不在框内横向/纵向滚动。 */
.fullscreen-editor-modal {
    background: #d1d5db !important;
    overflow: auto !important;
}

.fullscreen-editor-shell {
    height: auto !important;
    min-height: 100% !important;
    grid-template-rows: auto auto auto !important;
    align-content: start !important;
    background: #d1d5db !important;
    box-shadow: none !important;
}

.fullscreen-editor-header {
    background: #ffffff !important;
    border-radius: 16px;
    padding: 12px 14px;
    border: 1px solid rgba(15, 23, 42, 0.08);
}

.fullscreen-editor-board {
    --braille-editor-rows: 1;
    width: max-content !important;
    max-width: none !important;
    min-width: max-content !important;
    height: auto !important;
    min-height: 0 !important;
    grid-template-rows: auto auto !important;
    overflow: visible !important;
    border-radius: 0 !important;
    background: #ffffff !important;
}

.fullscreen-corner {
    border-radius: 0 !important;
}

.fullscreen-column-ruler {
    overflow: visible !important;
}

.fullscreen-line-numbers {
    overflow: visible !important;
}

.fullscreen-textarea-scroll {
    width: calc(var(--braille-editor-cells) * var(--braille-cell-size) + var(--braille-editor-padding-x) * 2) !important;
    min-width: calc(var(--braille-editor-cells) * var(--braille-cell-size) + var(--braille-editor-padding-x) * 2) !important;
    height: calc(var(--braille-editor-rows) * 1em * var(--braille-line-height) + 28px) !important;
    min-height: calc(var(--braille-editor-rows) * 1em * var(--braille-line-height) + 28px) !important;
    overflow: visible !important;
    background: #ffffff !important;
}

.fullscreen-braille-mirror {
    height: calc(var(--braille-editor-rows) * 1em * var(--braille-line-height) + 28px) !important;
    overflow: visible !important;
    transform: none !important;
}

.fullscreen-braille-editor {
    height: calc(var(--braille-editor-rows) * 1em * var(--braille-line-height) + 28px) !important;
    min-height: calc(var(--braille-editor-rows) * 1em * var(--braille-line-height) + 28px) !important;
    overflow: hidden !important;
    overflow-x: hidden !important;
    overflow-y: hidden !important;
    border-radius: 0 !important;
}

.fullscreen-braille-cell {
    overflow: visible !important;
}

/* 全屏盲文光标修正：用按格计算的自定义光标，不再依赖浏览器原生光标的字符宽度。 */
.fullscreen-editor-board {
    --braille-editor-padding-x: 28px;
}

.fullscreen-braille-editor {
    caret-color: transparent !important;
}

.fullscreen-braille-caret {
    position: absolute;
    z-index: 5;
    width: 2px;
    min-height: 1em;
    background: #2563eb;
    border-radius: 999px;
    pointer-events: none;
    animation: fullscreenBrailleCaretBlink 1s steps(2, start) infinite;
}

.fullscreen-braille-caret.hidden {
    display: none;
}

@keyframes fullscreenBrailleCaretBlink {
    0%, 55% { opacity: 1; }
    56%, 100% { opacity: 0; }
}

.fullscreen-braille-mirror,
.fullscreen-braille-editor {
    padding-left: var(--braille-editor-padding-x) !important;
    padding-right: var(--braille-editor-padding-x) !important;
}

/* 全屏编辑光标二次校准：光标按镜像格子的真实坐标走；右侧增加和行号区等宽的空白栏。 */
.fullscreen-editor-board {
    --fullscreen-side-gutter: calc((var(--line-number-digits) + 2) * 1ch);
    grid-template-columns: var(--fullscreen-side-gutter) calc(var(--braille-editor-cells) * var(--braille-cell-size) + var(--braille-editor-padding-x) * 2) var(--fullscreen-side-gutter) !important;
    width: calc(var(--fullscreen-side-gutter) * 2 + var(--braille-editor-cells) * var(--braille-cell-size) + var(--braille-editor-padding-x) * 2) !important;
}

.fullscreen-editor-board::after {
    content: "";
    grid-column: 3;
    grid-row: 1 / span 2;
    background: #ffffff;
    border-left: 1px solid rgba(15, 23, 42, 0.08);
}

.fullscreen-braille-caret {
    width: 3px !important;
    background: #ff2d55 !important;
    box-shadow: 0 0 0 1px rgba(255,255,255,0.95), 0 0 8px rgba(255,45,85,0.75);
    z-index: 8 !important;
}

.fullscreen-textarea-scroll {
    cursor: text;
}

/* 全屏选择框修正：选择高亮也按镜像格子绘制，避免 Shift/选择模式使用 textarea 原生选择框产生行高误差。 */
.fullscreen-braille-selection-layer {
    position: absolute;
    inset: 0;
    z-index: 2;
    overflow: visible;
    padding: 14px var(--braille-editor-padding-x);
    pointer-events: none;
    width: calc(var(--braille-editor-cells) * var(--braille-cell-size) + var(--braille-editor-padding-x) * 2);
    min-width: calc(var(--braille-editor-cells) * var(--braille-cell-size) + var(--braille-editor-padding-x) * 2);
    height: calc(var(--braille-editor-rows) * 1em * var(--braille-line-height) + 28px);
}

.fullscreen-braille-selection-row {
    display: grid;
    grid-template-columns: repeat(var(--braille-editor-cells), var(--braille-cell-size));
    height: calc(1em * var(--braille-line-height));
    line-height: var(--braille-line-height);
}

.fullscreen-braille-selection-cell {
    width: var(--braille-cell-size);
    min-width: var(--braille-cell-size);
    height: calc(1em * var(--braille-line-height));
    border-radius: 2px;
}

.fullscreen-braille-selection-cell.is-selected {
    background: rgba(37, 99, 235, 0.24);
    box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.22);
}

.fullscreen-braille-editor::selection {
    background: transparent !important;
    color: transparent !important;
}

.fullscreen-braille-editor::-moz-selection {
    background: transparent !important;
    color: transparent !important;
}

.fullscreen-braille-mirror {
    z-index: 1;
}

.fullscreen-braille-editor {
    z-index: 3;
}

.fullscreen-braille-caret {
    z-index: 6 !important;
}


/* fullscreen-13：列号改为单字母并和方格冲齐；元信息移到编辑器下方；全屏软键盘完整显示 64 方。 */
.fullscreen-corner {
    font-size: 12px !important;
}

.fullscreen-ruler-row--letters {
    height: calc(1em * 1.15) !important;
    line-height: 1.15 !important;
}

.fullscreen-ruler-row--letters span {
    width: var(--braille-cell-size) !important;
    min-width: var(--braille-cell-size) !important;
    max-width: var(--braille-cell-size) !important;
    text-align: center;
    font-weight: 700;
    font-size: 0.78em;
    overflow: visible;
}

.fullscreen-editor-meta {
    justify-self: center;
    width: min(100%, var(--fullscreen-editor-board-width, auto));
    margin: -6px 0 0;
    color: #475569;
    font-size: 14px;
    line-height: 1.6;
    text-align: center;
}

.fullscreen-braille-keyboard {
    justify-self: center;
    width: min(1180px, calc(100vw - 28px));
    max-height: min(46dvh, 520px) !important;
    overflow: auto;
    -webkit-overflow-scrolling: touch;
    padding: 14px !important;
    border-radius: 18px;
}

.fullscreen-braille-keyboard .braille-keyboard-header {
    position: sticky;
    top: -14px;
    z-index: 2;
    padding: 4px 0 10px;
    background: linear-gradient(180deg, #fff 0%, rgba(255,255,255,0.96) 100%);
}

.fullscreen-braille-keyboard-grid {
    grid-template-columns: repeat(auto-fit, minmax(72px, 1fr)) !important;
    gap: 8px !important;
}

.fullscreen-braille-keyboard .braille-key {
    min-height: 74px;
    border-radius: 14px;
    padding: 8px 6px;
    touch-action: manipulation;
}

.fullscreen-braille-keyboard .braille-key-glyph {
    font-size: 27px;
}

.fullscreen-braille-keyboard .braille-key-meta,
.fullscreen-braille-keyboard .braille-key-ascii {
    font-size: 11px;
}

@media (max-width: 720px) {
    .fullscreen-braille-keyboard {
        width: calc(100vw - 16px);
        max-height: min(48dvh, 430px) !important;
        padding: 10px !important;
    }

    .fullscreen-braille-keyboard-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr)) !important;
        gap: 7px !important;
    }

    .fullscreen-braille-keyboard .braille-key {
        min-height: 68px;
        padding: 7px 4px;
    }

    .fullscreen-braille-keyboard .braille-key-glyph {
        font-size: 24px;
    }

    .fullscreen-braille-keyboard .braille-key-meta,
    .fullscreen-braille-keyboard .braille-key-ascii {
        font-size: 10px;
    }
}



/* fullscreen-14：精确修正列号、提示文本和全屏软键盘层级。 */
.fullscreen-column-ruler {
    box-sizing: border-box !important;
    padding-left: var(--fullscreen-ruler-padding-left, var(--braille-editor-padding-x)) !important;
    padding-right: var(--braille-editor-padding-x) !important;
    overflow: visible !important;
}

.fullscreen-ruler-row--letters {
    display: grid !important;
    grid-template-columns: repeat(var(--braille-editor-cells), var(--braille-cell-size)) !important;
    width: calc(var(--braille-editor-cells) * var(--braille-cell-size)) !important;
    min-width: calc(var(--braille-editor-cells) * var(--braille-cell-size)) !important;
    white-space: normal !important;
    justify-content: start !important;
}

.fullscreen-ruler-row--letters span {
    display: flex !important;
    align-items: center;
    justify-content: center;
    padding: 0 !important;
    box-sizing: border-box !important;
    width: var(--braille-cell-size) !important;
    min-width: var(--braille-cell-size) !important;
    height: 1.15em !important;
}

.fullscreen-editor-meta {
    display: block !important;
    grid-column: 1 / -1 !important;
    justify-self: center !important;
    width: auto !important;
    max-width: calc(100vw - 32px) !important;
    margin: -2px auto 0 !important;
    padding: 4px 10px !important;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.9);
    color: #334155 !important;
    font-size: 14px !important;
    line-height: 1.6 !important;
    text-align: center !important;
    z-index: 20 !important;
    position: relative !important;
}

.fullscreen-braille-keyboard {
    position: fixed !important;
    left: 50% !important;
    bottom: max(16px, env(safe-area-inset-bottom)) !important;
    transform: translateX(-50%) !important;
    z-index: 2147483000 !important;
    box-shadow: 0 24px 70px rgba(15, 23, 42, 0.32) !important;
    border: 1px solid rgba(15, 23, 42, 0.16) !important;
}

.fullscreen-braille-keyboard.hidden {
    display: none !important;
}

.fullscreen-editor-modal {
    overflow: auto !important;
}

@media (max-width: 720px) {
    .fullscreen-braille-keyboard {
        bottom: max(8px, env(safe-area-inset-bottom)) !important;
        max-height: min(55dvh, 460px) !important;
    }
}


/* fullscreen-15：取消全屏编辑器上方列号，编辑区直接从首行开始。 */
.fullscreen-corner,
.fullscreen-column-ruler {
    display: none !important;
}

.fullscreen-editor-board {
    grid-template-rows: auto !important;
}

.fullscreen-line-numbers,
.fullscreen-textarea-scroll,
.fullscreen-editor-board::after {
    grid-row: 1 !important;
}

.fullscreen-line-numbers {
    padding-top: 14px !important;
}


/* fullscreen-16：纸张宽度/行数/字符数提示固定显示在标题下方，不参与编辑框网格布局。 */
.fullscreen-editor-title-block {
    display: grid;
    gap: 4px;
    min-width: 0;
}

.fullscreen-editor-title-block .fullscreen-editor-meta {
    display: block !important;
    grid-column: auto !important;
    justify-self: start !important;
    width: auto !important;
    max-width: min(72vw, 680px) !important;
    margin: 0 !important;
    padding: 0 !important;
    border-radius: 0 !important;
    background: transparent !important;
    color: #64748b !important;
    font-size: 13px !important;
    line-height: 1.45 !important;
    text-align: left !important;
    position: static !important;
    z-index: auto !important;
    white-space: normal;
}

@media (max-width: 720px) {
    .fullscreen-editor-title-block .fullscreen-editor-meta {
        max-width: 100% !important;
        font-size: 12px !important;
    }
}


/* 2026-06-02：顶部文档入口与清爽渐变主题 */
:root {
    --bg: #f3f7f4;
    --panel: rgba(255, 255, 255, 0.9);
    --panel-strong: #ffffff;
    --panel-border: rgba(26, 87, 71, 0.12);
    --text: #14231f;
    --muted: #66756f;
    --accent: #10a37f;
    --accent-deep: #0f8f78;
    --accent-soft: #e7f7f1;
    --shadow: 0 20px 54px rgba(18, 38, 63, 0.10);
}

body {
    background:
        radial-gradient(circle at 12% 14%, rgba(16, 163, 127, 0.16), transparent 30%),
        radial-gradient(circle at 86% 8%, rgba(68, 118, 255, 0.15), transparent 28%),
        radial-gradient(circle at 76% 86%, rgba(101, 210, 170, 0.16), transparent 30%),
        linear-gradient(135deg, #fbfdfb 0%, #eef7f3 46%, #f4f7ff 100%);
}

.survey-experience {
    background:
        radial-gradient(circle at 16% 16%, rgba(16, 163, 127, 0.18), transparent 30%),
        radial-gradient(circle at 86% 10%, rgba(68, 118, 255, 0.14), transparent 28%),
        linear-gradient(145deg, #fbfffd 0%, #eef8f4 52%, #f4f7ff 100%);
}

.topbar {
    background: rgba(255, 255, 255, 0.82);
    border-color: rgba(16, 163, 127, 0.13);
    box-shadow: 0 16px 38px rgba(18, 38, 63, 0.08);
}

.panel,
.trad-panel,
.session-panel,
.composer-box,
.modal-card,
.survey-panel,
.braille-keyboard,
.download-card,
.pending-upload-card {
    background: linear-gradient(180deg, rgba(255,255,255,0.94), rgba(250,253,252,0.88));
    border-color: rgba(16, 163, 127, 0.12);
}

.brand-mark,
.hero-mark {
    background: linear-gradient(135deg, #10a37f 0%, #36c49b 52%, #5b7cfa 100%);
    box-shadow: 0 14px 30px rgba(16, 163, 127, 0.24);
}

.primary-button,
.send-button {
    background: linear-gradient(135deg, #10a37f 0%, #25b995 54%, #4f7cff 100%);
    box-shadow: 0 14px 30px rgba(16, 163, 127, 0.22);
}

.mode-pill.active,
.choice-button.active {
    background: linear-gradient(135deg, rgba(16, 163, 127, 0.12), rgba(79, 124, 255, 0.10));
    border-color: rgba(16, 163, 127, 0.35);
    color: var(--accent-deep);
}

.icon-button,
.ghost-button,
.upload-button,
.mode-pill,
.choice-button,
.message-icon-button,
.nav-action-button,
.session-item {
    background: rgba(255, 255, 255, 0.86);
    border-color: rgba(26, 87, 71, 0.12);
}

.icon-button:hover,
.ghost-button:hover,
.upload-button:hover,
.mode-pill:hover,
.choice-button:hover,
.message-icon-button:hover,
.nav-action-button:hover,
.session-item:hover {
    background: #ffffff;
    border-color: rgba(16, 163, 127, 0.28);
    box-shadow: 0 12px 26px rgba(16, 163, 127, 0.10);
}

.doc-link-button {
    min-height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 15px;
    border-radius: 14px;
    border: 1px solid rgba(16, 163, 127, 0.18);
    color: var(--accent-deep);
    background: linear-gradient(135deg, rgba(231, 247, 241, 0.96), rgba(239, 244, 255, 0.96));
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
    transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.doc-link-button:hover {
    transform: translateY(-1px);
    border-color: rgba(16, 163, 127, 0.35);
    box-shadow: 0 12px 26px rgba(16, 163, 127, 0.12);
}

.settings-link-row {
    margin: 14px 0;
}

.settings-link-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px;
    border-radius: 18px;
    border: 1px solid rgba(16, 163, 127, 0.16);
    background: linear-gradient(135deg, rgba(231, 247, 241, 0.92), rgba(239, 244, 255, 0.92));
    color: var(--text);
    text-decoration: none;
}

.settings-link-card small {
    display: block;
    margin-top: 4px;
    color: var(--muted);
    line-height: 1.5;
}

.settings-link-icon {
    width: 36px;
    height: 36px;
    border-radius: 12px;
    display: inline-grid;
    place-items: center;
    color: #fff;
    background: linear-gradient(135deg, #10a37f, #4f7cff);
    flex: 0 0 auto;
}

@media (max-width: 640px) {
    .doc-link-button {
        padding: 0 10px;
        font-size: 13px;
    }
}


/* 传统模式下载格式选择弹窗 */
.download-modal-card {
    width: min(560px, calc(100vw - 32px));
}

.download-format-grid {
    display: grid;
    gap: 12px;
    margin: 18px 0 6px;
}

.download-format-card {
    width: 100%;
    display: grid;
    gap: 5px;
    text-align: left;
    padding: 16px 18px;
    border-radius: 18px;
    border: 1px solid rgba(16, 163, 127, 0.16);
    background: linear-gradient(135deg, rgba(255,255,255,0.96), rgba(231,247,241,0.82));
    color: var(--text);
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.download-format-card strong {
    font-size: 16px;
}

.download-format-card span {
    color: var(--muted);
    line-height: 1.6;
    font-size: 14px;
}

.download-format-card:hover,
.download-format-card:focus-visible {
    transform: translateY(-1px);
    border-color: rgba(16, 163, 127, 0.34);
    box-shadow: 0 14px 30px rgba(16, 163, 127, 0.12);
    outline: none;
}


/* 2026-06-03：移动端设置弹窗防遮挡；全屏盲文编辑顶栏/软键盘固定，只有编辑纸张区域滚动。 */
.modal-mask {
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch;
    align-items: center !important;
    padding: max(16px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) max(16px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left)) !important;
}

.modal-card {
    max-height: calc(100dvh - max(32px, env(safe-area-inset-top)) - max(32px, env(safe-area-inset-bottom))) !important;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
}

.modal-card .modal-actions {
    position: sticky;
    bottom: -1px;
    z-index: 3;
    margin: 18px -6px -6px;
    padding: 12px 6px calc(6px + env(safe-area-inset-bottom));
    border-top: 1px solid rgba(15, 23, 42, 0.06);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0.98) 34%, #fff 100%);
    backdrop-filter: blur(8px);
}

@media (max-width: 640px) {
    .modal-mask {
        align-items: flex-start !important;
        padding: max(10px, env(safe-area-inset-top)) 10px max(10px, env(safe-area-inset-bottom)) !important;
    }

    .modal-card {
        width: 100% !important;
        max-height: calc(100dvh - max(20px, env(safe-area-inset-top)) - max(20px, env(safe-area-inset-bottom))) !important;
        padding: 18px !important;
        border-radius: 20px !important;
    }

    #settingsModal .modal-card {
        padding-bottom: 12px !important;
    }

    #settingsModal .settings-link-row {
        margin: 10px 0 !important;
    }

    #settingsModal .modal-support-card {
        gap: 10px !important;
        padding: 12px !important;
    }

    #settingsModal .modal-support-image {
        width: min(132px, 42vw) !important;
    }

    #settingsModal .modal-actions {
        display: grid !important;
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }
}

body.fullscreen-editor-open {
    overflow: hidden !important;
}

.fullscreen-editor-modal {
    overflow: hidden !important;
    padding: max(10px, env(safe-area-inset-top)) max(10px, env(safe-area-inset-right)) max(10px, env(safe-area-inset-bottom)) max(10px, env(safe-area-inset-left)) !important;
    background: #d5d9df !important;
}

.fullscreen-editor-shell {
    height: calc(100dvh - max(20px, env(safe-area-inset-top)) - max(20px, env(safe-area-inset-bottom))) !important;
    min-height: 0 !important;
    display: grid !important;
    grid-template-rows: auto minmax(0, 1fr) !important;
    align-content: stretch !important;
    gap: 12px !important;
    overflow: hidden !important;
    background: #d5d9df !important;
    box-shadow: none !important;
}

.fullscreen-editor-header {
    position: relative !important;
    z-index: 20 !important;
    flex: 0 0 auto;
    background: #ffffff !important;
    border-radius: 0 !important;
}

.fullscreen-editor-board {
    align-self: start !important;
    justify-self: center !important;
    max-width: 100% !important;
    max-height: 100% !important;
    overflow: auto !important;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    border-radius: 0 !important;
    background: #fff !important;
}

.fullscreen-textarea-scroll,
.fullscreen-braille-editor,
.fullscreen-braille-mirror,
.fullscreen-braille-selection-layer {
    flex: 0 0 auto;
}

.fullscreen-braille-keyboard {
    position: fixed !important;
    left: 50% !important;
    bottom: max(12px, env(safe-area-inset-bottom)) !important;
    transform: translateX(-50%) !important;
    z-index: 2147483000 !important;
    width: min(1180px, calc(100vw - 24px)) !important;
    max-height: min(50dvh, 520px) !important;
    overflow: auto !important;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    background: #fff !important;
    box-shadow: 0 24px 70px rgba(15, 23, 42, 0.32) !important;
}

.fullscreen-braille-keyboard.hidden {
    display: none !important;
}

body.fullscreen-editor-open.fullscreen-braille-keyboard-open .fullscreen-editor-board {
    scroll-padding-bottom: min(50dvh, 520px);
}

@media (max-width: 720px) {
    .fullscreen-editor-modal {
        padding: max(8px, env(safe-area-inset-top)) max(8px, env(safe-area-inset-right)) max(8px, env(safe-area-inset-bottom)) max(8px, env(safe-area-inset-left)) !important;
    }

    .fullscreen-editor-shell {
        height: calc(100dvh - max(16px, env(safe-area-inset-top)) - max(16px, env(safe-area-inset-bottom))) !important;
        gap: 8px !important;
        padding: 8px !important;
    }

    .fullscreen-editor-header {
        padding: 10px 12px !important;
        gap: 8px !important;
    }

    .fullscreen-editor-actions {
        gap: 8px !important;
    }

    .fullscreen-braille-keyboard {
        width: calc(100vw - 16px) !important;
        bottom: max(8px, env(safe-area-inset-bottom)) !important;
        max-height: min(58dvh, 460px) !important;
    }
}


/* 2026-06-03：手机全屏编辑顶栏紧凑化，避免小屏多行挤占编辑区域。 */
@media (max-width: 720px) {
    .fullscreen-editor-header {
        display: flex !important;
        align-items: center !important;
        justify-content: space-between !important;
        flex-wrap: nowrap !important;
        padding: 6px 8px !important;
        gap: 6px !important;
        min-height: 44px !important;
        overflow: hidden !important;
    }

    .fullscreen-editor-title-block {
        flex: 1 1 auto !important;
        min-width: 0 !important;
        display: flex !important;
        align-items: baseline !important;
        gap: 6px !important;
        overflow: hidden !important;
    }

    .fullscreen-editor-header h2 {
        flex: 0 0 auto !important;
        margin: 0 !important;
        font-size: 16px !important;
        line-height: 1.15 !important;
        white-space: nowrap !important;
    }

    .fullscreen-editor-title-block .fullscreen-editor-meta {
        flex: 1 1 auto !important;
        min-width: 0 !important;
        max-width: none !important;
        margin: 0 !important;
        font-size: 11px !important;
        line-height: 1.15 !important;
        white-space: nowrap !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
    }

    .fullscreen-editor-actions {
        flex: 0 0 auto !important;
        display: flex !important;
        align-items: center !important;
        justify-content: flex-end !important;
        flex-wrap: nowrap !important;
        gap: 5px !important;
        min-width: 0 !important;
    }

    #toggleFullscreenBrailleKeyboardButton {
        min-height: 32px !important;
        height: 32px !important;
        padding: 0 8px !important;
        border-radius: 10px !important;
        font-size: 12px !important;
        line-height: 1 !important;
        white-space: nowrap !important;
    }

    #closeFullscreenBrailleEditorButton {
        width: 32px !important;
        height: 32px !important;
        min-width: 32px !important;
        min-height: 32px !important;
        border-radius: 10px !important;
        font-size: 18px !important;
        padding: 0 !important;
    }
}

@media (max-width: 420px) {
    .fullscreen-editor-header {
        min-height: 38px !important;
        padding: 5px 6px !important;
    }

    .fullscreen-editor-header h2 {
        font-size: 14px !important;
    }

    .fullscreen-editor-title-block .fullscreen-editor-meta {
        font-size: 10px !important;
    }

    #toggleFullscreenBrailleKeyboardButton {
        height: 30px !important;
        min-height: 30px !important;
        padding: 0 6px !important;
        font-size: 11px !important;
    }

    #closeFullscreenBrailleEditorButton {
        width: 30px !important;
        height: 30px !important;
        min-width: 30px !important;
        min-height: 30px !important;
    }
}

@media (max-width: 360px) {
    .fullscreen-editor-title-block .fullscreen-editor-meta {
        display: none !important;
    }
}


/* 2026-06-03：修复上一版小屏顶栏过度裁剪导致全屏编辑区不可见；手机端只保留必要顶栏元素。 */
@media (max-width: 720px) {
    .fullscreen-editor-shell {
        grid-template-rows: 42px minmax(0, 1fr) !important;
        overflow: hidden !important;
    }

    .fullscreen-editor-header {
        box-sizing: border-box !important;
        display: grid !important;
        grid-template-columns: minmax(0, 1fr) auto !important;
        align-items: center !important;
        height: 42px !important;
        min-height: 42px !important;
        max-height: 42px !important;
        padding: 5px 8px !important;
        gap: 6px !important;
        overflow: visible !important;
    }

    .fullscreen-editor-title-block {
        display: block !important;
        min-width: 0 !important;
        overflow: hidden !important;
    }

    .fullscreen-editor-header h2 {
        display: block !important;
        margin: 0 !important;
        font-size: 15px !important;
        line-height: 1.1 !important;
        white-space: nowrap !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
    }

    .fullscreen-editor-title-block .fullscreen-editor-meta {
        display: none !important;
    }

    .fullscreen-editor-actions {
        display: flex !important;
        align-items: center !important;
        justify-content: flex-end !important;
        flex-wrap: nowrap !important;
        gap: 5px !important;
        min-width: max-content !important;
    }

    #toggleFullscreenBrailleKeyboardButton {
        display: inline-flex !important;
        align-items: center !important;
        justify-content: center !important;
        height: 30px !important;
        min-height: 30px !important;
        padding: 0 7px !important;
        border-radius: 9px !important;
        font-size: 11px !important;
        line-height: 1 !important;
        white-space: nowrap !important;
    }

    #closeFullscreenBrailleEditorButton {
        display: inline-flex !important;
        align-items: center !important;
        justify-content: center !important;
        width: 30px !important;
        height: 30px !important;
        min-width: 30px !important;
        min-height: 30px !important;
        padding: 0 !important;
        border-radius: 9px !important;
        font-size: 18px !important;
        line-height: 1 !important;
    }

    .fullscreen-editor-board {
        align-self: stretch !important;
        justify-self: stretch !important;
        width: 100% !important;
        min-width: 0 !important;
        max-width: 100% !important;
        height: 100% !important;
        max-height: 100% !important;
        overflow: auto !important;
        visibility: visible !important;
        opacity: 1 !important;
    }
}

@media (max-width: 380px) {
    .fullscreen-editor-shell {
        grid-template-rows: 38px minmax(0, 1fr) !important;
    }

    .fullscreen-editor-header {
        height: 38px !important;
        min-height: 38px !important;
        max-height: 38px !important;
        padding: 4px 6px !important;
    }

    .fullscreen-editor-header h2 {
        font-size: 13px !important;
    }

    #toggleFullscreenBrailleKeyboardButton {
        height: 28px !important;
        min-height: 28px !important;
        padding: 0 6px !important;
        font-size: 10px !important;
    }

    #closeFullscreenBrailleEditorButton {
        width: 28px !important;
        height: 28px !important;
        min-width: 28px !important;
        min-height: 28px !important;
    }
}


/* 2026-06-03：手机端恢复纸张信息，作为悬浮小条显示在标题下方，不参与布局占高。 */
@media (max-width: 720px) {
    .fullscreen-editor-title-block .fullscreen-editor-meta {
        display: block !important;
        position: fixed !important;
        top: calc(max(8px, env(safe-area-inset-top)) + 50px) !important;
        left: 50% !important;
        transform: translateX(-50%) !important;
        z-index: 25 !important;
        width: max-content !important;
        max-width: calc(100vw - 28px) !important;
        padding: 3px 9px !important;
        border-radius: 999px !important;
        border: 1px solid rgba(15, 23, 42, 0.08) !important;
        background: rgba(255, 255, 255, 0.88) !important;
        color: #475569 !important;
        box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08) !important;
        backdrop-filter: blur(8px);
        font-size: 11px !important;
        line-height: 1.25 !important;
        text-align: center !important;
        white-space: nowrap !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
        pointer-events: none !important;
    }

    .fullscreen-editor-board {
        scroll-padding-top: 24px !important;
    }
}

@media (max-width: 380px) {
    .fullscreen-editor-title-block .fullscreen-editor-meta {
        top: calc(max(8px, env(safe-area-inset-top)) + 44px) !important;
        max-width: calc(100vw - 20px) !important;
        padding: 2px 7px !important;
        font-size: 10px !important;
    }
}


/* 2026-06-03：传统/全屏盲文软键盘统一为手机键盘式布局：上方工具条、左侧点位选择区、右侧固定功能键。 */
.braille-keyboard,
.fullscreen-braille-keyboard {
    --braille-key-min: 64px;
    --braille-op-width: 74px;
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) var(--braille-op-width) !important;
    grid-template-rows: auto minmax(0, 1fr) !important;
    gap: 8px !important;
    padding: 10px !important;
}

.braille-keyboard-header,
.fullscreen-braille-keyboard .braille-keyboard-header {
    grid-column: 1 / -1 !important;
    display: grid !important;
    grid-template-columns: minmax(0, auto) minmax(0, 1fr) !important;
    align-items: center !important;
    gap: 8px !important;
    min-height: 38px;
    padding: 4px 6px !important;
    border-radius: 14px;
    background: linear-gradient(180deg, rgba(248, 250, 252, 0.98), rgba(240, 247, 244, 0.96)) !important;
    border: 1px solid rgba(15, 23, 42, 0.06);
}

.braille-keyboard-copy {
    min-width: 0;
}

.braille-keyboard-copy h3 {
    margin: 0 !important;
    font-size: 14px !important;
    line-height: 1.1;
    white-space: nowrap;
}

.braille-keyboard-head-controls {
    min-width: 0;
    display: flex !important;
    align-items: center !important;
    justify-content: flex-end !important;
    gap: 8px !important;
}

.braille-keyboard-display-toggle {
    flex: 0 1 auto;
    display: flex !important;
    flex-wrap: nowrap !important;
    gap: 4px !important;
}

.braille-keyboard-display-toggle .mode-pill {
    min-height: 28px !important;
    padding: 0 8px !important;
    border-radius: 999px !important;
    font-size: 12px !important;
    white-space: nowrap !important;
}

.braille-keyboard-nav {
    flex: 0 0 auto;
    display: grid !important;
    grid-template-columns: 32px minmax(44px, auto) 32px 32px !important;
    align-items: center !important;
    gap: 5px !important;
}

.braille-keyboard-nav .icon-button {
    width: 32px !important;
    height: 32px !important;
    min-width: 32px !important;
    min-height: 32px !important;
    padding: 0 !important;
    border-radius: 10px !important;
    font-size: 15px !important;
}

.braille-keyboard-page {
    min-width: 44px !important;
    min-height: 32px !important;
    display: grid !important;
    place-items: center !important;
    padding: 0 6px !important;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.74);
    border: 1px solid rgba(15, 23, 42, 0.06);
    color: #334155 !important;
    font-size: 12px !important;
    line-height: 1 !important;
    white-space: nowrap;
}

.braille-keyboard-grid,
.fullscreen-braille-keyboard-grid {
    grid-column: 1 !important;
    grid-row: 2 !important;
    min-height: 0;
    overflow: auto;
    -webkit-overflow-scrolling: touch;
    display: grid !important;
    grid-template-columns: repeat(auto-fit, minmax(var(--braille-key-min), 1fr)) !important;
    gap: 7px !important;
    padding: 2px !important;
}

.braille-keyboard-ops,
.fullscreen-braille-keyboard .braille-keyboard-ops {
    grid-column: 2 !important;
    grid-row: 2 !important;
    min-height: 0;
    display: grid !important;
    grid-template-columns: 1fr !important;
    grid-template-rows: 1fr 1fr 1.25fr !important;
    gap: 7px !important;
    align-items: stretch !important;
}

.braille-op-key,
.braille-keyboard-ops .ghost-button {
    width: 100% !important;
    min-width: 0 !important;
    min-height: 0 !important;
    height: auto !important;
    border-radius: 14px !important;
    display: grid !important;
    place-items: center !important;
    padding: 6px !important;
    font-weight: 800 !important;
    font-size: 17px !important;
    line-height: 1.1 !important;
}

.braille-op-key--space {
    font-size: 14px !important;
    letter-spacing: 0.02em;
}

.braille-op-key--danger {
    color: #be123c !important;
}

.braille-key {
    min-height: 58px !important;
    padding: 6px 4px !important;
    border-radius: 13px !important;
}

.braille-key-glyph {
    font-size: 23px !important;
}

.braille-key-glyph--ascii {
    font-size: 18px !important;
}

.braille-key-meta,
.braille-key-ascii {
    font-size: 10px !important;
    line-height: 1.2 !important;
}

body[data-layout-mode="wide"] .braille-keyboard-dock .braille-keyboard {
    --braille-key-min: clamp(58px, 5.4vw, 82px);
    --braille-op-width: clamp(66px, 5.8vw, 84px);
    height: 100% !important;
}

body[data-layout-mode="stacked"] .braille-keyboard-dock {
    left: 8px !important;
    right: 8px !important;
    bottom: max(8px, env(safe-area-inset-bottom)) !important;
}

body[data-layout-mode="stacked"] .braille-keyboard-dock .braille-keyboard,
.fullscreen-braille-keyboard {
    --braille-key-min: 54px;
    --braille-op-width: 64px;
    max-height: min(42dvh, 360px) !important;
}

@media (max-width: 720px) {
    .braille-keyboard,
    .fullscreen-braille-keyboard {
        --braille-key-min: 52px;
        --braille-op-width: 62px;
        padding: 8px !important;
        gap: 7px !important;
        grid-template-columns: minmax(0, 1fr) var(--braille-op-width) !important;
    }

    .fullscreen-braille-keyboard {
        width: calc(100vw - 12px) !important;
        max-height: min(42dvh, 360px) !important;
    }

    .braille-keyboard-header,
    .fullscreen-braille-keyboard .braille-keyboard-header {
        min-height: 34px;
        padding: 3px 4px !important;
        gap: 5px !important;
    }

    .braille-keyboard-copy h3 {
        font-size: 13px !important;
    }

    .braille-keyboard-display-toggle .mode-pill {
        min-height: 26px !important;
        padding: 0 6px !important;
        font-size: 11px !important;
    }

    .braille-keyboard-nav {
        grid-template-columns: 28px minmax(38px, auto) 28px 28px !important;
        gap: 4px !important;
    }

    .braille-keyboard-nav .icon-button {
        width: 28px !important;
        height: 28px !important;
        min-width: 28px !important;
        min-height: 28px !important;
        font-size: 14px !important;
    }

    .braille-keyboard-page {
        min-width: 38px !important;
        min-height: 28px !important;
        padding: 0 4px !important;
        font-size: 11px !important;
    }

    .braille-key {
        min-height: 50px !important;
        padding: 5px 3px !important;
    }

    .braille-key-glyph {
        font-size: 20px !important;
    }

    .braille-key-meta,
    .braille-key-ascii {
        font-size: 9px !important;
    }
}

@media (max-width: 430px) {
    .braille-keyboard-head-controls {
        gap: 3px !important;
    }

    .braille-keyboard-display-toggle {
        display: flex !important;
        flex: 0 0 auto !important;
        gap: 3px !important;
    }

    .braille-keyboard-display-toggle .mode-pill {
        min-height: 24px !important;
        min-width: 0 !important;
        padding: 0 5px !important;
        font-size: 10px !important;
        letter-spacing: 0 !important;
        max-width: 54px !important;
        overflow: hidden !important;
        text-overflow: clip !important;
    }

    .braille-keyboard-nav {
        grid-template-columns: 26px minmax(34px, auto) 26px 26px !important;
        gap: 3px !important;
    }

    .braille-keyboard-nav .icon-button {
        width: 26px !important;
        height: 26px !important;
        min-width: 26px !important;
        min-height: 26px !important;
        border-radius: 8px !important;
    }

    .braille-keyboard-page {
        min-width: 34px !important;
        min-height: 26px !important;
        font-size: 10px !important;
    }
}

@media (min-width: 1100px) {
    .braille-keyboard,
    .fullscreen-braille-keyboard {
        --braille-key-min: 76px;
        --braille-op-width: 88px;
    }
}



/* 全屏盲文编辑首次帮助弹窗 */
.fullscreen-help-card {
    width: min(680px, calc(100vw - 32px));
}

.fullscreen-help-content {
    display: grid;
    gap: 10px;
    margin: 14px 0 18px;
}

.fullscreen-help-content p {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.8;
}

.fullscreen-help-checkbox {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 18px;
    color: var(--text-primary);
    font-weight: 600;
}

.fullscreen-help-checkbox input {
    width: 18px;
    height: 18px;
}

@media (max-width: 640px) {
    .fullscreen-help-card {
        width: 100%;
        padding: 20px !important;
    }
}


/* 全屏帮助弹窗必须高于全屏编辑器和浮动输入提示 */
#fullscreenHelpModal {
    z-index: 2147483647 !important;
}

#fullscreenHelpModal .fullscreen-help-card {
    position: relative;
    z-index: 1;
}