/* A fuller introduction and quiet reading controls, using the existing palette. */
.guideTabs { display: inline-flex; gap: 5px; padding: 5px; border: 1px solid #dce2ed; border-radius: 14px; background: #eceff6; margin-bottom: 28px; max-width: 100%; }
.guideTabs button { min-height: 44px; padding: 10px 24px; border: 0; border-radius: 10px; background: transparent; color: #606d86; font-size: 14px; }
.guideTabs button[aria-selected=true] { background: #fff; color: #435579; box-shadow: 0 2px 7px #35466509; }
.guidePanel[hidden] { display: none; }
.guidePanel:focus-visible { outline: 2px solid #788bad; outline-offset: 6px; border-radius: 12px; }
.introLetter { position: relative; isolation: isolate; overflow: hidden; padding: 38px 40px; border-radius: 22px; background: linear-gradient(120deg,#edf1f9,#f2eef7); border: 1px solid #e0e5f0; }
.introLetter::after { content: ''; position: absolute; z-index: -1; width: 240px; height: 240px; right: -100px; top: -100px; border: 1px solid #cdd5e7; border-radius: 50%; box-shadow: 0 0 0 25px #dbe1ef60,0 0 0 53px #e3e7f340; pointer-events: none; }
.introLetter h2 { font-family: Georgia,'Songti SC','Noto Serif CJK SC',serif; font-size: clamp(25px,2.4vw,34px); line-height: 1.65; font-weight: 400; margin: 12px 0 20px; color: #364861; }
.introLetter h2 em { font-style: normal; color: #746a91; }
.introLetter > p { color: #52617b; line-height: 2; font-size: 15px; max-width: 48em; margin: 12px 0; }
.introSignature { display: flex; align-items: center; gap: 9px; color: #636e89; font: italic 16px Georgia,serif; margin-top: 22px; }
.introSignature span { color: #82769b; font-style: normal; }
.introSectionHead { margin: 34px 0 19px; }
.introSectionHead h2, .guideLearnHeading h2 { font-size: 20px; font-weight: 500; color: #3c4b68; margin: 0 0 8px; }
.introSectionHead p, .guideLearnHeading p { color: #606d86; font-size: 14px; line-height: 1.9; margin: 0; }
.introAudienceGrid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 16px; }
.introAudience { display: flex; flex-direction: column; align-items: flex-start; padding: 25px; min-width: 0; }
.introAudience > span { font-size: 25px; margin-bottom: 15px; }
.introAudience h3, .introFeature h3, .introCare h3 { font-size: 17px; font-weight: 500; color: #3c4b68; line-height: 1.7; margin: 0 0 10px; }
.introAudience p { flex: 1; font-size: 14px; line-height: 1.95; color: #606d86; margin: 0 0 12px; }
.introAudience .microLink, .introCare .microLink { min-height: 44px; text-align: left; }
.introFeatureGrid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 0 32px; }
.introFeature { padding: 23px 0; border-top: 1px solid #dce3ee; }
.introFeature > small { color: #66738c; font-size: 10px; letter-spacing: 1.3px; display: block; margin-bottom: 12px; }
.introFeature p { font-size: 14px; color: #5b6882; line-height: 2; margin: 10px 0 0; }
.introFeature p.introFine { font-size: 13px; color: #65718a; }
.introCare { display: flex; align-items: flex-start; gap: 18px; padding: 25px; background: #eeeff7; border-radius: 16px; margin-top: 15px; }
.introCare > span { font-size: 24px; }
.introCare p { margin: 0 0 7px; font-size: 14px; color: #59667f; line-height: 2; max-width: 65em; }
.introStart .buttonRow { flex-wrap: wrap; flex-shrink: 0; }
.guideLearnHeading { margin: 0 0 24px; }
.readerTools { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; padding: 16px 0 2px; }
.readerTool { min-height: 44px; border: 1px solid #dce3ee; border-radius: 10px; background: #fff; color: #536585; padding: 9px 13px; font-size: 13px; line-height: 1.5; }
.readerTool:hover { background: #eef2f9; }
.readerTool.isSpeaking { background: #e8edf8; border-color: #bac7df; color: #43577c; }
.readerCopyGroup { display: inline-flex; align-items: stretch; min-width: 0; }
.readerCopyGroup select { min-height: 44px; max-width: 135px; padding: 8px 25px 8px 11px; font-size: 13px; color: #536585; background-color: #f9fafe; border: 1px solid #dce3ee; border-radius: 10px 0 0 10px; }
.readerCopyGroup .readerTool { border-left: 0; border-radius: 0 10px 10px 0; }
.capturePreview .readerStatus { min-height: 23px; margin: 6px 0 10px; font-size: 13px; line-height: 1.8; color: #606d86; }
.capturePreview .readerHiddenHint { color: #65718a; background: #eef1f7; padding: 13px 16px; border-radius: 10px; font-size: 14px; }
.readerCopyFallback { padding: 15px; background: #eef1f8; border-radius: 12px; margin: 12px 0 20px; }
.readerCopyFallback label { display: block; color: #586984; font-size: 13px; line-height: 1.9; margin-bottom: 10px; }
.readerCopyFallback textarea { width: 100%; max-width: 100%; min-height: 110px; padding: 12px; border: 1px solid #cdd6e6; border-radius: 8px; background: #fff; color: #34435f; font: 16px/1.9 Georgia,'Songti SC',serif; box-sizing: border-box; resize: vertical; }
.readerCopyFallback .microLink { min-height: 44px; }
.readerBottomActions { gap: 16px; }
.readerBottomActions > .hint { max-width: 25em; margin: 0; line-height: 1.9; }
.readerTool:disabled { opacity: .65; cursor: wait; }
@media (prefers-reduced-motion:no-preference) {
 .guidePanel:not([hidden]) { animation: softReveal .2s ease-out; }
 .guideTabs button, .readerTool { transition: background .18s ease,color .18s ease; }
}
@media (max-width:1100px) and (min-width:781px) {
 .introAudienceGrid { grid-template-columns: 1fr; }
 .introAudience { display: grid; grid-template-columns: 40px 1fr; column-gap: 14px; }
 .introAudience > span { grid-row: 1/4; }
 .introAudience p, .introAudience .microLink { grid-column: 2; }
 .introStart { align-items: flex-start; flex-direction: column; }
}
@media (max-width:780px) {
 .guideTabs { display: flex; margin-bottom: 20px; }
 .guideTabs button { flex: 1; padding: 10px 14px; font-size: 15px; }
 .introLetter { padding: 27px 23px; border-radius: 17px; }
 .introLetter h2 { font-size: 27px; margin: 12px 0 17px; }
 .introLetter > p { font-size: 15px; line-height: 2.05; }
 .introLetter::after { width: 180px; height: 180px; right: -130px; top: -100px; }
 .introSectionHead { margin: 29px 0 17px; }
 .introAudienceGrid, .introFeatureGrid { grid-template-columns: 1fr; gap: 12px; }
 .introAudience { padding: 21px; }
 .introAudience > span { margin-bottom: 10px; }
 .introFeatureGrid { gap: 0; }
 .introFeature { padding: 22px 1px; }
 .introFeature p.introFine { font-size: 14px; }
 .introCare { gap: 12px; padding: 21px 18px; }
 .introCare > span { font-size: 21px; }
 .introStart .buttonRow { display: grid; grid-template-columns: 1fr; width: 100%; margin-top: 18px; }
 .introStart .buttonRow button { width: 100%; min-height: 48px; margin: 0; }
 .readerTools { gap: 8px; }
 .readerTools > .readerTool { flex: 1; font-size: 14px; padding: 10px 9px; }
 .readerCopyGroup { width: 100%; }
 .readerCopyGroup select { flex: 1; max-width: none; font-size: 16px; }
 .readerCopyGroup .readerTool { min-width: 85px; font-size: 14px; }
 .readerBottomActions { flex-direction: column; align-items: stretch; }
 .readerBottomActions > .addBtn { width: 100%; }
 .capturePreview .readerStatus, .readerCopyFallback label { font-size: 14px; }
}