@font-face{font-family:Montserrat Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(../media/montserrat-cyrillic-ext-wght-normal.0zkopkvt4~_8n.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Montserrat Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(../media/montserrat-cyrillic-wght-normal.0_k0k1w48dv3n.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Montserrat Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(../media/montserrat-vietnamese-wght-normal.16n.bpy8dm2.6.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Montserrat Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(../media/montserrat-latin-ext-wght-normal.088nmt5ad-j88.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Montserrat Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(../media/montserrat-latin-wght-normal.08ozys.2v7xea.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@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{.sr-only{clip-path:inset(50%);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.relative{position:relative}.start{inset-inline-start:var(--spacing)}.block{display:block}.inline{display:inline}.table{display:table}.underline{text-decoration-line:underline}}:root{--ink:#111;--ink-soft:#4a4a4a;--navy:#161616;--paper:#f1f1f1;--white:#fff;--line:#d2d2d2;--orange:#d71920;--orange-dark:#a30f15;--mint:#e8e8e8;--mint-dark:#202020;--shadow:0 24px 70px #0000001f}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);margin:0;font-family:Montserrat Variable,Montserrat,Arial,sans-serif}button,input,textarea,select{font:inherit}button,select,label{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.48}.site-header{border-bottom:1px solid #11111121;justify-content:space-between;align-items:center;width:min(1180px,100% - 40px);height:84px;margin:0 auto;display:flex}.brand{color:var(--ink);letter-spacing:-.04em;align-items:center;gap:11px;font-size:20px;font-weight:850;text-decoration:none;display:inline-flex}.brand-mark{background:var(--orange);color:#fff;letter-spacing:-.14em;border-radius:11px;place-items:center;width:38px;height:38px;padding-right:2px;font:800 13px/1 ui-monospace,monospace;display:grid;box-shadow:inset 0 -3px #0000001f}.header-note{color:var(--ink-soft);text-transform:uppercase;letter-spacing:.12em;align-items:center;gap:9px;font-size:11px;font-weight:750;display:flex}.status-dot{background:#d71920;border-radius:50%;width:8px;height:8px;box-shadow:0 0 0 4px #d719201f}.hero{grid-template-columns:minmax(0,1.65fr) minmax(300px,.75fr);align-items:center;gap:80px;width:min(1180px,100% - 40px);min-height:510px;margin:0 auto;padding:65px 0 70px;display:grid}.eyebrow,.section-kicker,.card-kicker{color:var(--orange-dark);text-transform:uppercase;letter-spacing:.13em;margin:0 0 18px;font-size:12px;font-weight:850}.hero h1{letter-spacing:-.075em;max-width:750px;margin:0;font-size:clamp(58px,7.2vw,102px);font-weight:850;line-height:.91}.hero h1 em{color:var(--orange);letter-spacing:-.065em;font-family:Georgia,Times New Roman,serif;font-weight:500}.hero-lead{max-width:670px;color:var(--ink-soft);letter-spacing:-.012em;margin:32px 0 0;font-size:19px;line-height:1.65}.how-card{background:var(--navy);color:#fff;box-shadow:12px 12px 0 var(--orange);border-radius:4px 28px;padding:34px;position:relative;overflow:hidden}.how-card:after{content:"";border:1px solid #ffffff1a;border-radius:50%;width:160px;height:160px;position:absolute;top:-65px;right:-65px;box-shadow:0 0 0 28px #ffffff06}.how-card .card-kicker{color:#a4a4a4;margin-bottom:22px}.how-card ol{margin:0;padding:0;list-style:none}.how-card li{border-top:1px solid #ffffff1f;grid-template-columns:35px 1fr;align-items:start;gap:14px;padding:18px 0;display:grid}.how-card li>span{color:var(--orange);font:800 12px/1.7 ui-monospace,monospace}.how-card p{color:#cecece;margin:0;font-size:14px;line-height:1.55}.how-card strong{color:#fff;font-size:15px;display:block}.workspace{background:var(--white);box-shadow:var(--shadow);border-radius:34px 34px 0 0;padding:42px max(20px,50vw - 590px) 74px}.workspace-top{justify-content:space-between;align-items:end;gap:24px;margin-bottom:32px;display:flex}.workspace-top .section-kicker{margin-bottom:7px}.workspace h2{letter-spacing:-.055em;margin:0;font-size:clamp(30px,4vw,46px);line-height:1}.mode-switch{background:#e7e7e7;border-radius:14px;padding:4px;display:flex}.mode-switch button{color:#616161;background:0 0;border:0;border-radius:11px;padding:12px 19px;font-size:14px;font-weight:760}.mode-switch button.active{background:var(--navy);color:#fff;box-shadow:0 5px 15px #00000026}.notice{color:#222;background:#f4f4f4;border:1px solid #c9c9c9;border-radius:12px;align-items:center;gap:10px;margin:-10px 0 22px;padding:11px 14px;font-size:14px;display:flex}.notice span{background:#dedede;border-radius:50%;place-items:center;width:20px;height:20px;font-weight:900;display:grid}.student-grid{grid-template-columns:.92fr 1.08fr 1.1fr;align-items:stretch;gap:18px;display:grid}.panel{border:1px solid var(--line);background:#fff;border-radius:21px;min-width:0;padding:23px}.panel-heading{border-bottom:1px solid #e0e0e0;align-items:center;gap:13px;margin-bottom:21px;padding-bottom:21px;display:flex}.panel-heading p{color:#707070;text-transform:uppercase;letter-spacing:.1em;margin:0 0 3px;font-size:10px;font-weight:850}.panel-heading h3{letter-spacing:-.035em;margin:0;font-size:19px}.step-badge{background:var(--orange);color:#fff;border-radius:50%;flex:none;place-items:center;width:36px;height:36px;font:850 12px/1 ui-monospace,monospace;display:grid}.field-label{color:#5e5e5e;margin-bottom:7px;font-size:12px;font-weight:750;display:block}select,.form-grid input,.form-grid textarea{width:100%;color:var(--ink);background:#fafafa;border:1px solid #cecece;border-radius:11px;outline:none;transition:border-color .2s,box-shadow .2s}select{appearance:none;background-image:linear-gradient(45deg,#0000 50%,#5e5e5e 50%),linear-gradient(135deg,#5e5e5e 50%,#0000 50%);background-position:calc(100% - 17px),calc(100% - 12px);background-repeat:no-repeat;background-size:5px 5px;padding:12px 38px 12px 12px}select:focus,.form-grid input:focus,.form-grid textarea:focus{border-color:var(--orange);box-shadow:0 0 0 3px #d719201f}.empty-state{text-align:center;background:#f7f7f7;border:1px dashed #c6c6c6;border-radius:13px;padding:20px}.empty-state strong{font-size:14px;display:block}.empty-state p{color:#707070;margin:6px 0 0;font-size:12px;line-height:1.5}.exercise-brief{background:#f2f2f2;border-radius:14px;margin-top:16px;padding:15px}.exercise-brief .safe-label{color:var(--mint-dark);text-transform:uppercase;letter-spacing:.08em;align-items:center;gap:6px;font-size:10px;font-weight:850;display:flex}.exercise-brief .safe-label span{color:#fff;background:#d71920;border-radius:50%;place-items:center;width:17px;height:17px;display:grid}.exercise-brief h4{margin:12px 0 5px;font-size:16px}.exercise-brief p{color:#5f5f5f;margin:0;font-size:12px;line-height:1.5}.file-stack{gap:11px;display:grid}.submission-note{color:#666;margin:11px 0 0;font-size:11px;line-height:1.5}.file-drop{cursor:pointer;background:#fafafa;border:1px dashed #bcbcbc;border-radius:14px;grid-template-columns:43px minmax(0,1fr) auto;align-items:center;gap:11px;min-height:78px;padding:12px;transition:all .2s;display:grid;position:relative}.file-drop:hover,.file-drop.is-dragging{border-color:var(--orange);background:#f8f8f8;transform:translateY(-1px)}.file-drop.has-file{background:#f1f1f1;border-style:solid;border-color:#d71920}.file-drop input{opacity:0;width:1px;height:1px;position:absolute}.file-type{background:var(--navy);color:#fff;text-transform:uppercase;border-radius:10px;place-items:center;width:43px;height:43px;font:850 10px/1 ui-monospace,monospace;display:grid}.file-drop.has-file .file-type{background:#d71920}.file-copy{min-width:0}.file-copy strong,.file-copy small{text-overflow:ellipsis;white-space:nowrap;display:block;overflow:hidden}.file-copy strong{font-size:13px}.file-copy small{color:#747474;margin-top:4px;font-size:10px}.file-action{color:var(--orange-dark);font-size:11px;font-weight:800}.button{border:0;border-radius:12px;justify-content:center;align-items:center;gap:10px;min-height:47px;padding:12px 18px;font-size:13px;font-weight:820;transition:transform .2s,box-shadow .2s,background .2s;display:inline-flex}.button:not(:disabled):hover{transform:translateY(-2px)}.button--full{width:100%;margin-top:15px}.button--primary{background:var(--orange);color:#fff;box-shadow:0 8px 18px #d719203b}.button--primary:hover{background:#b30f16}.button--secondary{color:var(--ink);background:#fff;border:1px solid #c8c8c8}.privacy-line{color:#757575;text-align:center;margin:12px 0 0;font-size:10px}.privacy-line span{color:#d71920;font-size:8px}.panel--result{background:#f6f6f6}.result-placeholder{text-align:center;color:#858585;place-content:center;justify-items:center;min-height:226px;display:grid}.mini-score{color:#a4a4a4;border:8px solid #e2e2e2;border-radius:50%;justify-content:center;align-items:baseline;width:108px;height:108px;padding-top:28px;display:flex}.mini-score span{font-size:30px;font-weight:850}.mini-score small{font-size:10px}.result-placeholder p{max-width:190px;margin:15px 0 0;font-size:12px;line-height:1.5}.score-row{grid-template-columns:108px 1fr;align-items:center;gap:17px;display:grid}.score-ring{--score:0deg;background:conic-gradient(var(--orange) var(--score),#e0e0e0 0);border-radius:50%;justify-content:center;align-items:baseline;width:108px;height:108px;padding-top:34px;display:flex;position:relative}.score-ring:before{content:"";background:#fff;border-radius:50%;position:absolute;inset:8px}.score-ring span,.score-ring small{z-index:1;position:relative}.score-ring span{letter-spacing:-.05em;font-size:32px;font-weight:900}.score-ring small{color:#777;font-size:9px}.is-approved .score-ring{background:conic-gradient(#d71920 var(--score),#e0e0e0 0)}.result-label{color:#757575;text-transform:uppercase;letter-spacing:.08em;margin:0;font-size:10px;font-weight:850}.result-content h4{letter-spacing:-.03em;margin:5px 0 10px;font-size:18px}.subscores{flex-wrap:wrap;gap:7px;display:flex}.subscores span{color:#707070;background:#fff;border-radius:20px;padding:5px 8px;font-size:9px}.subscores strong{color:var(--ink)}.hints{margin-top:18px}.hints-title{color:#666;text-transform:uppercase;letter-spacing:.08em;margin:0 0 9px;font-size:10px;font-weight:850}.hint{border-top:1px solid #dedede;grid-template-columns:20px 1fr;gap:7px;padding:10px 0;display:grid}.hint>span{color:var(--orange);font-weight:900}.hint p{color:#676767;margin:0;font-size:10px;line-height:1.45}.hint strong{color:var(--ink);font-size:11px;display:block}.approval-message{color:#fff;background:#161616;border-radius:13px;grid-template-columns:35px 1fr;gap:11px;margin-top:18px;padding:16px;display:grid}.approval-message>span{background:var(--orange);color:#fff;border-radius:50%;place-items:center;width:34px;height:34px;font-weight:900;display:grid}.approval-message strong{font-size:13px}.approval-message p{color:#d6d6d6;margin:4px 0 0;font-size:10px;line-height:1.55}.receipt-button{color:#111;background:#fff;border:0;border-radius:9px;align-items:center;gap:8px;margin-top:12px;padding:9px 12px;font-size:10px;font-weight:850;display:inline-flex}.receipt-button:hover{background:#e5e5e5}.hints-intro{color:#666;margin:-2px 0 10px;font-size:10px;line-height:1.55}.teacher-grid{background:var(--navy);color:#fff;border-radius:22px;grid-template-columns:1.45fr .75fr;display:grid;overflow:hidden}.teacher-form{padding:34px}.panel-heading--large{border-color:#ffffff21}.teacher-grid .panel-heading p{color:#9b9b9b}.teacher-grid .panel-heading h3{color:#fff;font-size:23px}.form-grid{grid-template-columns:1fr 1.2fr;gap:15px;display:grid}.form-grid label>span{color:#cecece;margin-bottom:7px;font-size:11px;font-weight:750;display:block}.form-grid input,.form-grid textarea{color:#fff;resize:vertical;background:#202020;border-color:#3d3d3d;padding:12px}.form-grid input::placeholder,.form-grid textarea::placeholder{color:#777}.form-grid .profile-field{grid-column:1/-1}.form-grid .profile-field select{color:#fff;background-color:#202020;border-color:#3d3d3d}.reference-files{grid-template-columns:1fr 1fr;gap:12px;margin-top:16px;display:grid}.file-drop--dark{background:#222;border-color:#575757}.file-drop--dark:hover,.file-drop--dark.is-dragging{background:#2c2c2c}.file-drop--dark.has-file{background:#242424;border-color:#d71920}.file-drop--dark .file-type{background:var(--orange)}.file-drop--dark .file-copy small{color:#8d8d8d}.file-drop--dark .file-action{color:#ff6268}.reference-note{color:#aaa;margin:10px 0 0;font-size:10px}.reference-note--special{color:#e5e5e5;background:#d719201a;border:1px solid #ff626852;border-radius:12px;margin-top:16px;padding:12px 14px;font-size:11px;line-height:1.55}.button--accent{background:var(--orange);color:#fff;min-width:240px;margin-top:20px}.teacher-security{color:#888;align-items:center;gap:7px;margin:0 0 0 13px;font-size:10px;display:inline-flex}.library{background:#202020;border-left:1px solid #ffffff14;padding:34px}.step-badge--light{color:#c9c9c9;background:#333}.library-empty{text-align:center;color:#999;place-content:center;justify-items:center;min-height:245px;display:grid}.library-empty>span{color:var(--orange);font-size:38px}.library-empty strong{color:#fff;margin-top:12px}.library-empty p{max-width:220px;margin:5px 0 0;font-size:11px}.exercise-list{gap:12px;max-height:370px;padding-right:3px;display:grid;overflow:auto}.exercise-item{background:#292929;border:1px solid #444;border-radius:14px;padding:16px}.exercise-item-top{justify-content:space-between;align-items:center;display:flex}.exercise-item-top span{color:#ff6268;letter-spacing:.08em;font-size:9px;font-weight:850}.exercise-item-top small{color:#888;font-size:9px}.exercise-item h4{margin:10px 0 5px;font-size:15px}.exercise-item>p{color:#999;margin:0;font-size:9px}.exercise-actions{gap:7px;margin-top:13px;display:flex}.exercise-actions button{color:#e2e2e2;background:0 0;border:1px solid #555;border-radius:8px;padding:7px 9px;font-size:9px;font-weight:780}.exercise-actions button:first-child{border-color:var(--orange);background:var(--orange);color:#fff}.principles{grid-template-columns:repeat(3,1fr);gap:1px;width:min(1180px,100% - 40px);margin:0 auto;padding:75px 0;display:grid}.principles>div{border-left:1px solid #d0d0d0;padding:0 36px}.principles>div:first-child{border-left:0;padding-left:0}.principles span{color:var(--orange);font:850 11px/1 ui-monospace,monospace}.principles h3{letter-spacing:-.025em;margin:14px 0 8px;font-size:18px}.principles p{color:#676767;margin:0;font-size:13px;line-height:1.6}footer{border-top:1px solid #d6d6d6;justify-content:space-between;align-items:center;gap:24px;width:min(1180px,100% - 40px);margin:0 auto;padding:28px 0 40px;display:flex}.brand--footer{font-size:16px}.brand--footer .brand-mark{border-radius:8px;width:30px;height:30px;font-size:10px}footer p{color:#777;margin:0;font-size:11px}.sr-only{clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important;width:1px!important;height:1px!important;margin:-1px!important;padding:0!important;position:absolute!important;overflow:hidden!important}@media (max-width:1020px){.hero{grid-template-columns:1fr .65fr;gap:38px}.student-grid{grid-template-columns:1fr 1fr}.panel--result{grid-column:1/-1}.result-placeholder{min-height:150px}.teacher-grid{grid-template-columns:1.15fr .85fr}.form-grid,.reference-files{grid-template-columns:1fr}.teacher-security{margin:13px 0 0;display:flex}}@media (max-width:760px){.site-header{width:min(100% - 28px,1180px);height:70px}.header-note{display:none}.hero{grid-template-columns:1fr;width:min(100% - 28px,1180px);min-height:0;padding:54px 0 60px}.hero h1{font-size:clamp(52px,16vw,78px)}.hero-lead{font-size:16px}.how-card{margin-right:10px}.workspace{border-radius:24px 24px 0 0;padding:32px 14px 55px}.workspace-top{flex-direction:column;align-items:stretch}.mode-switch{width:100%}.mode-switch button{flex:1}.student-grid,.teacher-grid{grid-template-columns:1fr}.panel--result{grid-column:auto}.teacher-form,.library{padding:23px}.library{border-top:1px solid #ffffff14;border-left:0}.principles{grid-template-columns:1fr;width:min(100% - 28px,1180px);padding:52px 0}.principles>div,.principles>div:first-child{border-top:1px solid #d0d0d0;border-left:0;padding:25px 0}.principles>div:first-child{border-top:0}footer{flex-direction:column;align-items:flex-start;width:min(100% - 28px,1180px)}.score-row{grid-template-columns:94px 1fr}.score-ring{width:94px;height:94px;padding-top:29px}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}