:root{color-scheme:light;--ink:#243b30;--muted:#5d7063;--green:#285b46;--light:#eaf0df;--line:#dce2d4;--paper:#fffef9;--bg:#f7f6ee;font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}*{box-sizing:border-box}body{margin:0;line-height:1.75}button,input,textarea,select{font:inherit}a{color:var(--green);text-underline-offset:4px}button,.button{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--line);border-radius:12px;padding:9px 17px;min-height:46px;background:var(--paper);color:var(--ink);cursor:pointer;text-decoration:none;font-weight:600}button:hover,.button:hover{background:var(--light)}button:disabled{cursor:default;opacity:.45}.primary{background:var(--green);border-color:var(--green);color:white}.primary:hover{background:#1e4937}.quiet{background:transparent;border-color:transparent}.danger{color:#8f4435}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #8ba65f;outline-offset:3px}.top{max-width:1160px;margin:auto;padding:24px 32px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;gap:12px;align-items:center;text-decoration:none;font-size:22px;font-weight:750;line-height:1.3}.brand small{display:block;font-size:11px;font-weight:400;letter-spacing:2px;margin-top:6px;color:var(--muted)}.edition{font-size:13px;border:1px solid var(--line);padding:4px 12px;border-radius:100px}main{max-width:1080px;margin:34px auto;padding:0 24px;min-height:60vh}h1{font-size:clamp(27px,4vw,38px);line-height:1.35;margin:8px 0 16px;letter-spacing:-.5px}h2{font-size:23px;margin:0 0 16px}h3{font-size:18px;margin:0 0 12px}p{margin:8px 0 16px}.muted,small{color:var(--muted)}.eyebrow{font-size:13px;color:var(--muted);letter-spacing:2px}.hero{padding:28px 0 42px;display:flex;gap:40px;justify-content:space-between;align-items:center}.hero aside{border-left:2px solid #b7cb94;padding:0 0 0 22px;max-width:270px;font-size:15px}.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.between{justify-content:space-between}.stack{display:grid;gap:18px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.card,.panel{background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:25px}.card h3{font-size:21px}.tag{display:inline-block;padding:2px 10px;border-radius:100px;background:var(--light);font-size:12px;color:var(--green)}.empty{border:1px dashed #bbc7b0;border-radius:18px;padding:34px;text-align:center;color:var(--muted)}label{display:grid;gap:7px;font-weight:600;margin:14px 0}label small{font-weight:400}.check{display:flex;gap:9px;align-items:center;font-size:15px;font-weight:400}.check input{width:19px;height:19px;flex:0 0 auto}input,textarea,select{border:1px solid #bfcbb8;border-radius:10px;padding:11px 13px;color:var(--ink);background:#fff;width:100%;min-width:0}textarea{resize:vertical;min-height:100px;line-height:1.8}fieldset{border:0;padding:0;margin:0;min-width:0}fieldset:disabled{opacity:.65}legend{font-size:19px;font-weight:650;margin-bottom:12px}.steps{display:flex;gap:15px;padding:0;list-style:none;font-size:14px;margin:22px 0}.steps li{color:var(--muted);padding-bottom:8px;border-bottom:2px solid var(--line);flex:1}.steps [aria-current]{color:var(--green);border-color:var(--green);font-weight:700}.setup{max-width:780px;margin:auto}.setup .panel{padding:32px}.help{padding:14px 18px;border-radius:12px;background:var(--light);font-size:15px}.tabs{display:flex;gap:8px;margin:26px 0 20px;border-bottom:1px solid var(--line);padding-bottom:12px}.tabs button{background:transparent;border:0}.tabs button[aria-current]{background:var(--green);color:white}.practice{max-width:900px;margin:auto}.large{font-size:19px}.large h3{font-size:21px}.message{max-width:88%;padding:17px 22px;border-radius:18px;white-space:pre-wrap;overflow-wrap:anywhere;margin:16px 0;background:white;border:1px solid var(--line)}.message.child{margin-left:auto;background:#e7eddc;border-color:#dbe4ce}.message .who{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:12px;margin-bottom:7px}.message button{min-height:32px;padding:2px 9px;font-size:13px}.message p{margin:0}.chat{max-height:520px;overflow:auto;padding:8px 5px;scrollbar-gutter:stable}.composer{position:relative;margin-top:22px}.composer textarea{min-height:110px}.composer .row{margin-top:12px}.quote{white-space:pre-wrap;border-left:3px solid #a8bd84;padding:10px 17px;background:#f4f6ed;overflow-wrap:anywhere}.source{font-size:13px;color:var(--muted)}.material{padding:18px 0;border-bottom:1px solid var(--line)}.material:last-child{border-bottom:0}.work-text{white-space:pre-wrap;overflow-wrap:anywhere;line-height:2.1}.work-text p{text-indent:2em}.work-sheet{background:white;padding:34px;border:1px solid var(--line);border-radius:14px;margin:18px 0}.work-sheet h2{text-align:center}.choice-list{padding-left:24px}.choice-list li{margin:18px 0}.compare{display:grid;grid-template-columns:1fr 1fr;gap:16px}.compare>div{background:#f6f6f0;border:1px solid var(--line);border-radius:12px;padding:18px;white-space:pre-wrap;overflow-wrap:anywhere}.compare>div:last-child{background:#edf3e6}.compare h3{font-size:14px;color:var(--muted)}.banner{padding:13px 18px;background:#fff0d8;border:1px solid #ead3a5;border-radius:12px;font-size:15px;margin:16px 0}.save-status{max-width:1032px;margin:25px auto 8px;color:var(--muted);font-size:13px;padding:0 24px}.save-status.error{color:#963e29}.notice{position:fixed;z-index:30;bottom:20px;left:50%;transform:translateX(-50%);background:#354d3e;color:white;padding:16px 24px;border-radius:12px;max-width:600px;width:calc(100% - 40px);box-shadow:0 8px 35px #0002;white-space:pre-wrap}footer{max-width:1080px;margin:20px auto 40px;padding:20px 24px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.skip{position:absolute;top:-100px}.skip:focus{top:10px;left:10px;z-index:50;background:white;padding:12px}.loading{padding:40px;text-align:center}dialog{background:var(--paper);color:var(--ink);border:1px solid var(--line);border-radius:22px;padding:30px;max-width:600px;width:calc(100% - 30px);max-height:90vh}dialog::backdrop{background:#153d2c66}audio{max-width:100%;width:100%;margin:15px 0}details{margin:20px 0}summary{cursor:pointer;font-weight:600;padding:10px 0}.history{font-size:14px;border-bottom:1px solid var(--line);padding:10px 0}.smallprint{font-size:13px}.focus-source{height:160px}.danger-zone{border:1px solid #e6c4ad;background:#fff8f0}.finish{margin-top:25px;padding:22px;background:var(--light);border-radius:18px}.dot{display:inline-block;width:9px;height:9px;border-radius:50%;background:#b64a39;margin-right:7px}dl{display:grid;grid-template-columns:auto 1fr;gap:10px 22px}dt{color:var(--muted)}dd{margin:0}
@media(max-width:640px){.top{padding:18px 20px}.brand{font-size:20px}main{margin-top:24px;padding:0 16px}.hero{display:block;padding:12px 0 30px}.hero aside{max-width:none;margin-top:24px}.grid,.compare{grid-template-columns:1fr}.panel,.card,.setup .panel{padding:20px}.tabs{gap:3px}.tabs button{font-size:15px;padding:9px 12px}.message{max-width:95%;padding:14px 17px}.work-sheet{padding:22px 16px}.row{gap:9px}.steps{gap:8px;font-size:13px}.large{font-size:18px}.edition{font-size:11px}.save-status{padding:0 20px}.hero h1{font-size:30px}}
.sync-status{max-width:1080px;padding:0 24px;margin:12px auto 24px}.sync-note{font-size:14px;color:var(--muted);display:flex;gap:15px;align-items:center;flex-wrap:wrap}.sync-note.warning{padding:16px;background:#fff0d8;border-radius:12px;color:#815026}.conflict-panel{border-color:#d7b67f}.conflict-panel>.row{margin-top:20px}.conflict-panel .compare{align-items:start}.conflict-panel .compare>div{white-space:normal}.conflict-panel p{white-space:pre-wrap}.conflict-panel details{font-size:14px}
@media(prefers-reduced-motion:no-preference){button{transition:background .12s ease}dialog[open]{animation:appear .15s ease-out}@keyframes appear{from{opacity:.4;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}}

/* Whole-essay planning and paragraph work. */
.essay-plan{display:grid;gap:18px;margin-top:24px}.essay-section{border:1px solid var(--line,#d9ded4);border-radius:16px;padding:18px;background:#fff}.essay-section.selected{border:2px solid #47765a}.essay-context{background:#edf3e6;border-radius:16px;padding:18px;margin:0 0 18px}.essay-suggestion,.essay-observation{padding:14px 0;border-bottom:1px solid #d9ded4}.turn-section{display:block;color:#506652;margin-top:5px}.essay-section .row{flex-wrap:wrap}.essay-section input,.essay-section textarea{width:100%;min-width:0}.tabs{flex-wrap:wrap}.tabs button{min-height:44px}@media(max-width:650px){.essay-section{padding:14px}.essay-section .row button{min-height:44px}.essay-section .between{align-items:flex-start}.essay-context .row{flex-wrap:wrap}}
/* Writing desk: one sentence selection, persistent drafts, two destinations. */
.writing-practice{max-width:1080px}.writing-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px;align-items:start}.writing-layout>div{min-width:0}.writing-layout .panel{margin-bottom:20px}.writing-context{padding:18px 22px;background:#edf4eb;border-radius:16px;margin:18px 0 24px}.writing-context p{margin:8px 0}.sentence-card{border:1px solid #d9e2d3;border-radius:14px;padding:16px;margin:14px 0;background:#fffef9}.sentence-card.selected{border-color:#41745a;background:#eff6ed}.sentence-card .quote{margin:0 0 12px}.sentence-card small{display:block;margin-bottom:10px}.writing-practice p,.writing-practice h1,.writing-practice button{overflow-wrap:anywhere}.writing-practice fieldset{min-width:0}.paragraph-tools{margin-top:20px}.written-paragraph{padding:18px 0;border-bottom:1px solid #e3e5d9}.written-paragraph>p{white-space:pre-wrap;line-height:1.9}.section-switcher .row{margin-top:12px}.writing-practice button[aria-pressed=true]{background:#e3eddb;border-color:#41745a}.review-notes article{padding:16px 0;border-bottom:1px solid #ddd}.writing-practice textarea{box-sizing:border-box;width:100%}.paragraph-desk{scroll-margin-top:20px}.writing-practice details{margin:16px 0}.writing-practice .chat{max-height:520px}
@media(max-width:850px){.writing-layout{grid-template-columns:minmax(0,1fr)}.writing-context{padding:16px}.writing-practice .panel{padding:20px}.writing-practice .chat{max-height:350px}.writing-practice .row>button{max-width:100%}}
/* One conversation and one living composition; tools appear only while editing. */
.composition-practice{max-width:1080px}.composition-toolbar{margin-bottom:20px;align-items:start}.composition-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:22px;align-items:start}.composition-layout>*{min-width:0}.composition-layout .panel{padding:24px}.composition-paper{background:#fffefa;min-height:560px}.article-heading{padding-bottom:17px;border-bottom:1px solid var(--line);align-items:center}.article-heading h2{margin:0;font-size:22px}.article-heading small{font-size:13px}.article-body{padding:22px 6px 24px;overflow-wrap:anywhere}.article-body h1{text-align:center;font-size:25px;line-height:1.5;margin:10px 0 28px}.composition-paragraph{border-radius:12px;padding:8px 12px;margin:8px -12px;line-height:2}.composition-paragraph>p{text-indent:2em;white-space:pre-wrap;margin:0;font-size:18px}.composition-paragraph>button{margin:12px 0 6px;font-size:14px}.composition-paragraph.selected{outline:1px dashed #b5c9ab;background:#f8faef}.composition-update{display:flex;align-items:center;gap:12px;color:var(--green);font-size:13px;padding-top:12px;min-height:40px}.composition-update button{font-size:13px;min-height:36px;padding:3px 10px;background:transparent;border-color:transparent;text-decoration:underline}.composition-empty{text-align:center;padding:55px 12px;color:var(--muted)}.composition-empty>span{font-size:40px;display:block;margin-bottom:18px}.composition-empty p{font-size:19px}.article-footer{border-top:1px solid var(--line);padding-top:18px;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}.article-footer>span{font-size:13px;color:var(--muted)}.article-footer button{font-size:15px;padding:8px 13px}.composition-editor{background:#eff4e9;border:1px solid #c4d4b9;padding:17px;border-radius:14px;line-height:1.8}.composition-editor label{margin-top:0;font-size:15px}.composition-editor textarea{font-size:18px;min-height:170px;background:#fff}.composition-editor small{display:block;font-size:12px;margin-top:10px}.composition-editor button{font-size:14px;padding:8px 12px}.paragraph-adjust{border-top:1px solid #cbd9c0;margin-bottom:0}.paragraph-adjust summary{font-size:14px}.composition-more{margin:0;position:relative;font-size:14px}.composition-more>summary{min-width:80px;text-align:center;border:1px solid var(--line);border-radius:12px;background:var(--paper);padding:10px 18px}.more-content{position:absolute;right:0;top:56px;z-index:10;background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:22px;width:min(520px,calc(100vw - 48px));max-height:75vh;overflow:auto;box-shadow:0 10px 32px #243b301a}.more-content .row{align-items:stretch}.more-content p{overflow-wrap:anywhere}.more-content button{font-size:14px}.composition-practice .chat{height:min(98dvh,1000px);min-height:440px;max-height:none}.composition-practice .message{max-width:94%;padding:14px 16px;font-size:16px}.composition-practice .composer{margin-top:16px}.composition-practice .composer textarea{min-height:95px;font-size:17px}.composition-practice .composer label{font-size:15px}.composition-practice .composer small{display:block;font-size:11px;margin-top:9px}.composition-practice .composer button{font-size:14px;padding:8px 12px}.chat-focus{display:flex;gap:8px;align-items:center;background:#edf3e5;padding:8px 12px;border-radius:12px;font-size:12px;margin-top:12px}.chat-focus button{font-size:12px;min-height:36px;padding:4px 8px}.session-tools{margin-top:20px}.mobile-article-tools{display:none}.composition-practice button,.composition-practice h1{overflow-wrap:anywhere}.composition-practice .just-updated{background:#edf5da}
@media(prefers-reduced-motion:no-preference){.composition-practice .just-updated{animation:paragraph-update 2.8s ease-out forwards}@keyframes paragraph-update{0%,45%{background:#deedbc}100%{background:transparent}}}
@media(max-width:760px){.composition-layout{grid-template-columns:minmax(0,1fr);gap:18px}.composition-paper{grid-row:1;min-height:0}.conversation-column{grid-row:2}.composition-layout .panel{padding:20px}.article-body{padding-top:12px}.article-body h1{font-size:23px;margin:8px 0 20px}.article-body.is-collapsed{max-height:240px;overflow:hidden;mask-image:linear-gradient(#000 88%,transparent)}.mobile-article-tools{display:flex;gap:10px;margin:12px 0 0}.mobile-article-tools button{font-size:13px;min-height:40px;padding:6px 11px}.composition-practice .chat{height:720px;min-height:240px;max-height:none}.article-footer{margin-top:14px}.composition-paragraph>p{font-size:18px}.composition-toolbar{margin-bottom:16px}.composition-more>summary{min-width:65px}.composition-editor{padding:12px}.composition-editor .row{gap:7px}.composition-editor button{font-size:13px}.composition-practice .row>button{max-width:100%}}


.speech-bar{position:fixed;bottom:18px;right:18px;z-index:40;display:flex;align-items:center;flex-wrap:wrap;gap:12px;max-width:calc(100vw - 32px);padding:12px 16px;border:1px solid #c7d8b5;border-radius:14px;background:#edf4e2;box-shadow:0 6px 24px #243b3020;font-size:14px}.speech-bar[hidden],.speech-bar button[hidden]{display:none}.speech-bar button{min-height:44px;font-size:14px;padding:7px 12px}.speech-bar span{overflow-wrap:anywhere}

.speech-inline{padding:12px;border:1px solid var(--line);border-radius:12px;margin:12px 0}.speech-inline span{display:block;margin-bottom:8px}.speech-inline[hidden],.speech-inline button[hidden]{display:none}

/* Optional single-point reading, within the existing equal-width page. */
.reading-review{margin:18px 0;padding:18px;border:1px solid #b8cba7;border-radius:16px;background:#f0f5e8;overflow-wrap:anywhere}.reading-review .who{font-size:13px;color:var(--muted)}.reading-review blockquote{margin:12px 0;padding:10px 14px;border-left:3px solid #829d58;background:var(--paper);white-space:pre-wrap}.reading-review p{margin:8px 0 12px}.reading-review button{font-size:15px;padding:8px 12px}.reading-session{padding:14px 18px;margin-bottom:14px;background:#edf2e5;border:1px solid var(--line);border-radius:14px;overflow-wrap:anywhere}.reading-session p{margin:0 0 5px}.review-focus{background:#fff0b4;color:inherit;border-bottom:2px solid #bd943d;border-radius:3px}.composition-paragraph.is-reading{background:#edf4df;box-shadow:inset 4px 0 #6b8c39;border-radius:10px}.paragraph-listen{display:flex;justify-content:flex-end;margin-top:-5px;margin-bottom:8px}.paragraph-listen button{font-size:13px;min-height:38px;padding:4px 10px;font-weight:500}.reading-review .row{gap:8px}

.chat-history{margin:12px 0;border:1px solid var(--line,#dce4d3);border-radius:12px;padding:10px}.chat-history summary{cursor:pointer;color:var(--ink,#294a3f)}.chat-history[open] summary{margin-bottom:12px}

/* Recovery stays compact; adult diagnostics expand only when requested. */
.entry-recovery {max-width:46rem;margin:1rem auto;}
.entry-recovery .row {flex-wrap:wrap;gap:.65rem;}
.entry-help {margin:1rem 0;padding:.85rem 1rem;border:1px solid #d9e3d8;border-radius:12px;overflow-wrap:anywhere;}
.entry-help summary {cursor:pointer;min-height:44px;display:list-item;align-content:center;}
.entry-help ul {padding-left:1.3rem;max-height:22rem;overflow:auto;}
.entry-help li {margin-block:.7rem;}
.entry-help p {margin-block:.5rem;}
.entry-help button,.entry-recovery .button,.entry-recovery button {min-height:44px;}