/*! tailwindcss v4.2.1 | MIT License | https://tailwindcss.com */
@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.relative{position:relative}.start{inset-inline-start:var(--spacing)}.block{display:block}.inline{display:inline}.table{display:table}}:root{--ink:#172033;--muted:#697386;--paper:#f8f7f3;--line:#e7e4dc;--blue:#2864e8;--blue-dark:#164dbf;--mint:#e7f5ef;--gold:#f6c969}*{box-sizing:border-box}html{background:var(--paper)}body{color:var(--ink);background:var(--paper);margin:0;font-family:PingFang SC,Hiragino Sans GB,Microsoft YaHei,Arial,sans-serif}button,input,select,textarea{font:inherit}button{cursor:pointer}.app-shell{background:#f8f7f3;min-height:100vh}.topbar{z-index:20;border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#ffffffeb;justify-content:space-between;align-items:center;height:66px;padding:0 32px;display:flex;position:sticky;top:0}.brand{letter-spacing:.02em;align-items:center;gap:11px;font-weight:760;display:flex}.brand-mark{color:#fff;background:var(--blue);border-radius:10px;place-items:center;width:32px;height:32px;font-size:17px;display:grid}.brand small{color:var(--muted);margin-left:3px;font-weight:500}.top-actions{align-items:center;gap:12px;display:flex}.plain-button,.outline-button,.primary-button,.icon-button{white-space:nowrap;border:0;border-radius:10px;transition:all .18s}.plain-button{color:var(--muted);background:0 0;padding:9px 10px}.plain-button:hover{color:var(--ink);background:#f2f3f5}.outline-button{color:#31405d;background:#fff;border:1px solid #d8dce5;padding:10px 13px}.outline-button:hover{background:#f8faff;border-color:#aebbd5}.primary-button{background:var(--blue);color:#fff;padding:11px 16px;font-weight:700;box-shadow:0 6px 17px #2864e833}.primary-button:hover{background:var(--blue-dark);transform:translateY(-1px)}.primary-button:disabled{opacity:.65;cursor:wait;transform:none}.layout{grid-template-columns:280px minmax(0,1fr);gap:28px;max-width:1540px;margin:0 auto;padding:28px 32px 46px;display:grid}.sidebar{align-self:start;position:sticky;top:90px}.nav-card,.form-card,.preview-card,.history-card{border:1px solid var(--line);background:#fff;border-radius:17px}.nav-card{padding:12px}.nav-item{color:#5e6879;text-align:left;background:0 0;border:0;border-radius:10px;align-items:center;gap:11px;width:100%;padding:11px 12px;font-weight:600;display:flex}.nav-item.active{color:var(--blue);background:#edf3ff}.nav-item .nav-icon{text-align:center;width:22px}.sidebar-tip{color:#59667d;background:var(--mint);border-radius:13px;margin:18px 4px;padding:16px;font-size:13px;line-height:1.7}.sidebar-tip strong{color:#186748;margin-bottom:3px;display:block}.workspace{min-width:0}.page-heading{justify-content:space-between;align-items:flex-start;gap:20px;margin:2px 2px 20px;display:flex}.eyebrow{color:var(--blue);letter-spacing:.08em;font-size:13px;font-weight:800}h1{letter-spacing:-.03em;margin:6px 0 5px;font-size:31px}.subheading{color:var(--muted);margin:0;font-size:14px}.status-dot{background:#24a26a;border-radius:50%;width:8px;height:8px;margin-right:6px;display:inline-block}.status-text{color:#688070;padding-top:12px;font-size:13px}.studio-grid{grid-template-columns:minmax(300px,370px) minmax(0,1fr);align-items:start;gap:22px;display:grid}.form-card{padding:22px}.form-card h2,.preview-top h2{margin:0;font-size:17px}.form-intro{color:var(--muted);margin:7px 0 20px;font-size:13px;line-height:1.65}.field{margin:0 0 16px}.field label{color:#4d596e;margin:0 0 7px;font-size:13px;font-weight:700;display:block}.field select,.field input,.field textarea{width:100%;color:var(--ink);background:#fff;border:1px solid #dce0e7;border-radius:10px;outline:none;padding:10px 11px}.field select:focus,.field input:focus,.field textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px #2864e81a}.field textarea{resize:vertical;min-height:86px;line-height:1.55}.two-fields{grid-template-columns:1fr 1fr;gap:12px;display:grid}.quick-topics{flex-wrap:wrap;gap:7px;margin:2px 0 18px;display:flex}.quick-topic{color:#59667c;background:#fafafa;border:1px solid #e2e5eb;border-radius:999px;padding:6px 9px;font-size:12px}.quick-topic:hover{color:var(--blue);background:#f3f7ff;border-color:#a8bcf3}.generate-note{text-align:center;color:#8b93a1;margin:12px 0 0;font-size:12px}.preview-card{overflow:hidden}.preview-top{border-bottom:1px solid var(--line);background:#fff;justify-content:space-between;align-items:center;min-height:72px;padding:18px 20px;display:flex}.preview-actions{gap:8px;display:flex}.icon-button{color:#53627c;background:#f5f6f8;width:36px;height:36px;font-size:16px}.icon-button:hover{color:var(--blue);background:#eaf0ff}.document{background:#fffdf9;min-height:760px;padding:44px clamp(25px,6vw,68px) 70px}.doc-cover{border-bottom:1px dashed #d8d2c6;padding-bottom:29px}.doc-kicker{flex-wrap:wrap;gap:8px;margin-bottom:16px;display:flex}.doc-kicker span{color:#47628c;background:#edf3fb;border-radius:6px;padding:5px 8px;font-size:12px}.doc-title{color:#1c263a;letter-spacing:-.04em;margin:0;font-size:clamp(25px,3vw,38px);line-height:1.25}.doc-subtitle{color:#7c8491;margin:13px 0 0;font-size:14px;line-height:1.7}.goal-list{border-left:3px solid var(--blue);background:#f2f7ff;border-radius:3px 10px 10px 3px;margin:25px 0 0;padding:17px 20px}.goal-list strong{color:#34527f;margin-bottom:9px;font-size:13px;display:block}.goal-list ul{color:#52617a;margin:0;padding-left:19px;font-size:13px;line-height:1.8}.doc-section{margin:35px 0 0}.doc-section h3{letter-spacing:-.02em;margin:0 0 13px;font-size:19px}.doc-section h3 .section-no{color:var(--blue);vertical-align:2px;letter-spacing:.06em;margin-right:8px;font-size:13px}.doc-section p{color:#465167;margin:0;font-size:14px;line-height:1.9}.concept-grid{gap:12px;display:grid}.concept-card{background:#fff;border:1px solid #e7e3db;border-radius:12px;padding:16px 17px}.concept-card h4{margin:0 0 8px;font-size:15px}.formula{color:#174a9f;text-align:center;background:#eff5ff;border-radius:8px;margin:12px 0 10px;padding:12px 14px;font-family:Georgia,Times New Roman,serif;font-size:20px}.example-box{color:#63542a;background:#fff9e8;border-radius:9px;margin-top:14px;padding:14px 15px;font-size:13px;line-height:1.75}.example-box strong{color:#9a7115}.chart-shell{background:#fff;border:1px solid #e5e7ed;border-radius:12px;margin-top:15px;padding:16px}.chart-head{color:#687387;justify-content:space-between;gap:12px;margin-bottom:5px;font-size:12px;display:flex}.chart-note{color:#7b8595;margin:4px 0 0;font-size:12px;line-height:1.65}.mistakes{gap:9px;display:grid}.mistake{color:#6e4a43;background:#fff6f4;border-radius:10px;grid-template-columns:28px 1fr;gap:10px;padding:13px;font-size:13px;line-height:1.7;display:grid}.mistake b{color:#dc6b52}.practice-list{gap:12px;display:grid}.practice{background:#fff;border:1px solid #e4e6eb;border-radius:11px;padding:16px}.practice-title{font-size:14px;font-weight:750;line-height:1.7}.practice-answer{color:#5a708c;border-top:1px dashed #e1e3e8;margin-top:9px;padding-top:9px;font-size:13px;line-height:1.7}.edit-input,.edit-area{width:100%;color:inherit;background:#f7faff;border:1px dashed #92afea;border-radius:6px;outline:0;padding:7px}.edit-area{resize:vertical;min-height:94px;font-family:inherit;font-size:14px;line-height:1.75}.history-card{margin-top:18px;padding:13px}.history-card h3{margin:0 0 9px;font-size:13px}.history-item{text-align:left;color:#657086;background:0 0;border:0;border-radius:8px;width:100%;padding:9px 7px;font-size:12px;display:block}.history-item:hover{color:var(--blue);background:#f3f6fb}.empty-preview{color:#7b8492;text-align:center;place-items:center;min-height:600px;padding:30px;display:grid}.empty-symbol{margin-bottom:12px;font-size:48px;display:block}.loading-card{text-align:center;color:#56647b;padding:80px 30px}.loading-orbit{border:4px solid #dce7ff;border-top-color:var(--blue);border-radius:50%;width:40px;height:40px;margin:0 auto 17px;animation:.75s linear infinite spin}.toast{z-index:50;color:#fff;background:#26334c;border-radius:10px;padding:11px 15px;font-size:13px;position:fixed;bottom:26px;left:50%;transform:translate(-50%);box-shadow:0 9px 24px #121b2b33}@keyframes spin{to{transform:rotate(360deg)}}@media (width<=1050px){.layout{grid-template-columns:1fr}.sidebar{position:static}.nav-card{display:flex;overflow-x:auto}.nav-item{flex:none;width:auto}.sidebar-tip,.history-card{display:none}}@media (width<=780px){.topbar{padding:0 16px}.brand small,.plain-button{display:none}.layout{padding:20px 14px 32px}.studio-grid{grid-template-columns:1fr}.page-heading{display:block}.status-text{padding-top:8px}.document{padding:29px 21px 50px}.two-fields{grid-template-columns:1fr;gap:0}h1{font-size:27px}}@media print{.topbar,.sidebar,.page-heading,.form-card,.preview-top,.toast{display:none!important}.layout,.workspace,.studio-grid,.preview-card{border:0;max-width:none;margin:0;padding:0;display:block}.preview-card{border:0}.document{min-height:auto;padding:14mm}.doc-section{break-inside:avoid}}
