.qa-page { --qa-reference-width: clamp(440px,32vw,600px); background: #f5f6fc; }
.qa-page .page-layer { display: flex; flex-direction: column; min-height: 100vh; min-height: 100dvh; }
.qa-page .page-layer > main { flex: 1 0 auto; }
.qa-page .site-footer { flex: 0 0 auto; }
.qa-page::before { content: ""; position: absolute; inset: 0 0 auto; height: 480px; pointer-events: none; background: linear-gradient(180deg,#eef0fc40,#f5f6fc),url('../img/portal/materials-hero-light-20260907.jpg') center 32%/cover; opacity: .48; }
.qa-shell { position: relative; width: min(860px,calc(100% - 48px)); margin: 0 auto; padding: 152px 0 72px; }
.qa-intro { text-align: center; margin: 0 0 34px; }
.qa-intro .eyebrow { color: #65679a; letter-spacing: .2em; font-size: 12px; }
.qa-intro h1 { color: #1b205e; font: 700 52px/1.35 var(--font-display); margin: 14px 0 10px; }
.qa-intro > p:last-child { color: #646b87; font-size: 17px; }
.qa-composer { position: relative; border: 1px solid #dcdef1; border-radius: 26px; background: #ffffffed; box-shadow: 0 10px 40px #34397c0d; padding: 18px 18px 12px; text-align: left; }
.qa-composer:focus-within { background: #fff; box-shadow: 0 8px 36px #5752a820; }
.qa-composer textarea, .qa-composer textarea:focus, .qa-composer textarea:focus-visible { display: block; width: 100%; min-height: 52px; max-height: 170px; margin: 0; padding: 0 3px; border: 0 !important; outline: none !important; box-shadow: none !important; resize: none; background: transparent; color: #262c50; font: 400 17px/1.65 var(--font-sans); border-radius: 0; }
.qa-composer textarea::placeholder { color: #7a8099; }
.qa-composer-tools { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 8px; }
.qa-model-control { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.qa-model-static, .qa-model-control select { color: #535787; font: 500 14px/1.5 var(--font-sans); }
.qa-model-static::before { content: '✦'; margin-right: 6px; color: #6459d6; }
.qa-model-control select { background: #f0effa; border: 0; border-radius: 16px; padding: 7px 25px 7px 12px; max-width: 180px; }
.qa-quota { font-size: 12px; color: #757b95; }
.qa-send { display: grid; place-items: center; background: #5548c9; color: #fff; border: 0; border-radius: 50%; width: 42px; height: 42px; flex: 0 0 42px; cursor: pointer; transition: background .15s; }
.qa-send:hover { background: #4035a7; }.qa-send:disabled { opacity: .6; cursor: wait; }
.qa-send:focus-visible, .qa-examples button:focus-visible { outline: 2px solid #665adc; outline-offset: 4px; }
.qa-under-composer { display: flex; justify-content: space-between; gap: 16px; padding: 12px 8px; font-size: 13px; color: #7b8198; }
.qa-under-composer a { color: #5c53b6; }
.qa-examples { display: flex; flex-wrap: wrap; justify-content: center; gap: 9px; padding-top: 18px; }
.qa-examples > p { width: 100%; text-align: center; font-size: 13px; color: #9498ac; margin-bottom: 6px; }
.qa-examples button { display: flex; align-items: center; gap: 8px; padding: 10px 14px; border: 1px solid #dedff0; border-radius: 20px; background: #ffffff99; color: #62698a; font-size: 14px; cursor: pointer; }
.qa-examples button:hover { border-color: #b7b1e5; color: #4f43b9; }
.qa-toolbar { display: flex; justify-content: space-between; align-items: center; color: #73799a; font-size: 14px; border-bottom: 1px solid #e0e2ef; padding-bottom: 14px; }
.qa-toolbar button, .qa-answer-actions button { background: transparent; border: 0; color: #666b8b; font-size: 14px; display: inline-flex; align-items: center; gap: 7px; padding: 6px; cursor: pointer; }
.qa-conversation:empty { display: none; }
.qa-turn { padding: 26px 0; }.qa-question { margin: 0 0 28px auto; width: fit-content; max-width: 92%; padding: 14px 20px; border-radius: 22px 22px 4px 22px; background: #eae8f9; color: #393758; font-size: 16px; white-space: pre-wrap; overflow-wrap: anywhere; }
.qa-answer-label { display: flex; align-items: center; gap: 9px; color: #4e4a8c; font-size: 13px; font-weight: 600; margin-bottom: 16px; }
.qa-answer-label::before { content: '✦'; color: #6b5bde; font-size: 20px; }
.qa-answer { color: #33394f; font-size: 17px; line-height: 1.95; overflow-wrap: anywhere; }
.qa-answer > :first-child { margin-top: 0; }.qa-answer p { margin: 0 0 16px; }.qa-answer h1,.qa-answer h2,.qa-answer h3 { font-family: var(--font-display); font-weight: 700; color: #222754; line-height: 1.5; margin: 28px 0 12px; }.qa-answer h1 { font-size: 26px; }.qa-answer h2 { font-size: 23px; }.qa-answer h3 { font-size: 20px; }.qa-answer ul,.qa-answer ol { padding-left: 1.5em; margin: 0 0 20px; }.qa-answer ul { list-style: disc; }.qa-answer ol { list-style: decimal; }.qa-answer li { margin-bottom: 5px; }.qa-answer blockquote { border-left: 3px solid #b5afe8; padding-left: 18px; margin: 20px 0; color: #646988; }.qa-answer pre { padding: 16px; background: #eceef7; border-radius: 12px; overflow-x: auto; line-height: 1.6; }.qa-answer code { font-size: .87em; }.qa-table-scroll { overflow-x: auto; margin-bottom: 20px; }.qa-answer table { width: 100%; border-collapse: collapse; font-size: 15px; }.qa-answer th,.qa-answer td { border-bottom: 1px solid #dde0ed; text-align: left; padding: 12px; min-width: 100px; }.qa-answer th { background: #ededf8; }.qa-answer .katex-display { overflow: auto hidden; padding-block: 4px; }
.qa-cite { border: 0; border-radius: 7px; color: #6151c1; background: #eae6fc; padding: 0 5px; margin: 0 2px; font-size: 12px; vertical-align: super; cursor: pointer; line-height: 1.7; }
.qa-cite:hover, .qa-cite[aria-expanded="true"] { background: #6755ca; color: #fff; }
.qa-cite:focus-visible, .qa-reference-panel button:focus-visible, .qa-reference-body:focus-visible { outline: 2px solid #8875de; outline-offset: 3px; }
.qa-reference-panel { position: fixed; z-index: 111; top: 108px; bottom: 0; right: 0; width: var(--qa-reference-width); display: flex; flex-direction: column; overflow: hidden; border: 1px solid #fff; border-radius: 26px 0 0 0; background: #fcfcff; box-shadow: 0 20px 70px #4238791a,0 0 0 1px #cec9e77a; color: #363752; font-family: var(--font-sans); animation: qa-reference-enter .22s ease-out; }
.qa-reference-panel::before { content: ''; position: absolute; z-index: 1; top: 0; left: 28px; right: 28px; height: 2px; background: linear-gradient(90deg,transparent,#b5a6f2,transparent); }
.qa-reference-header { position: relative; isolation: isolate; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 28px 24px 20px; background: radial-gradient(ellipse at 95% 0%,#ded5ff99,transparent 70%),linear-gradient(135deg,#f5f2ff,#fafaff); }
.qa-reference-eyebrow { margin: 0 0 8px; color: #8a7db3; font-size: 9px; font-weight: 500; letter-spacing: .14em; }
.qa-reference-header h2 { margin: 0; color: #33296b; font: 700 25px/1.45 var(--font-display); }
.qa-reference-close { display: grid; place-items: center; flex: 0 0 38px; width: 38px; height: 38px; padding: 0; border: 1px solid #e3dcf3; border-radius: 50%; background: #ffffffb3; color: #7f73a5; font: 300 26px/1 var(--font-sans); cursor: pointer; }
.qa-reference-close:hover { color: #513bb0; background: #fff; }
.qa-reference-tabs { display: flex; flex: 0 0 auto; flex-wrap: wrap; gap: 8px; padding: 0 24px 22px; background: #fafaff; border-bottom: 1px solid #eae7f3; }
.qa-reference-tab { width: 34px; height: 34px; padding: 0; border: 1px solid #e4dff1; border-radius: 11px; background: #fff; color: #8a80a4; font: 500 13px/1 var(--font-sans); cursor: pointer; }
.qa-reference-tab:hover { border-color: #b8a7e9; color: #5c49ad; }
.qa-reference-tab[aria-pressed="true"] { border-color: transparent; background: #7460cf; color: #fff; box-shadow: 0 4px 12px #7760cf29; }
.qa-reference-body { min-height: 0; flex: 1; overflow-y: auto; overscroll-behavior: contain; scrollbar-width: thin; scrollbar-color: #cfc6eb transparent; padding: 28px 28px calc(34px + env(safe-area-inset-bottom,0px)); overflow-wrap: anywhere; outline-offset: -4px !important; }
.qa-reference-index { margin: 0 0 14px; color: #9885bf; font-size: 10px; letter-spacing: .14em; font-weight: 500; }
.qa-reference-title { margin: 0 0 12px; color: #342e60; font: 700 24px/1.6 var(--font-display); }
.qa-reference-chapter { margin: 0 0 26px; padding-left: 11px; border-left: 2px solid #c9b9ec; color: #8d84a1; font-size: 13px; line-height: 1.7; white-space: pre-wrap; }
.qa-reference-caption { display: flex; align-items: center; gap: 12px; margin: 28px 0 16px; color: #a296b7; font-size: 10px; letter-spacing: .12em; }
.qa-reference-caption::after { content: ''; flex: 1; height: 1px; background: linear-gradient(90deg,#e2daee,transparent); }
.qa-reference-excerpt { position: relative; margin: 0; padding: 19px 18px; border: 1px solid #ece7f5; border-radius: 16px; background: linear-gradient(150deg,#f5f1fc88,#fff); color: #69617b; font-size: 15px; line-height: 1.95; white-space: normal; }
.qa-reference-excerpt p { margin: 0 0 16px; }.qa-reference-excerpt > :last-child { margin-bottom: 0; }
.qa-reference-excerpt h1,.qa-reference-excerpt h2,.qa-reference-excerpt h3,.qa-reference-excerpt h4 { margin: 20px 0 10px; font: 700 18px/1.6 var(--font-display); color: #4c4267; }
.qa-reference-excerpt ul,.qa-reference-excerpt ol { padding-left: 1.4em; margin: 12px 0; }.qa-reference-excerpt ul { list-style: disc; }.qa-reference-excerpt ol { list-style: decimal; }
.qa-reference-excerpt blockquote { margin: 16px 0; padding-left: 14px; border-left: 2px solid #c9b9ec; }
.qa-reference-excerpt pre { overflow-x: auto; padding: 12px; border-radius: 10px; background: #eeebf7; line-height: 1.6; }.qa-reference-excerpt code { font-size: .9em; }
.qa-reference-excerpt table { width: 100%; border-collapse: collapse; font-size: 13px; }.qa-reference-excerpt th,.qa-reference-excerpt td { min-width: 90px; padding: 8px; text-align: left; border-bottom: 1px solid #e4dfef; }.qa-reference-excerpt th { background: #efecf8; }
.qa-reference-excerpt .katex-display { overflow: auto hidden; padding-block: 4px; }
.qa-reference-image { display: block; margin: 18px -6px; padding: 8px; border: 1px solid #e8e2f3; border-radius: 12px; background: #fff; overflow: hidden; cursor: zoom-in; }
.qa-reference-image:hover { border-color: #b9a6e6; box-shadow: 0 4px 16px #6d56a90e; }.qa-reference-image:focus-visible { outline: 2px solid #8875de; outline-offset: 3px; }
.qa-reference-image img { display: block; width: 100%; height: auto; border-radius: 5px; }
.qa-reference-image-error { display: block; padding: 22px 12px; color: #8c7aaa; font-size: 13px; text-align: center; line-height: 1.7; }
.qa-reference-backdrop { position: fixed; z-index: 110; inset: 0; background: #29204245; backdrop-filter: blur(3px); -webkit-backdrop-filter: blur(3px); }
.qa-reference-modal { overflow: hidden; }
@keyframes qa-reference-enter { from { opacity: 0; transform: translateX(16px); } to { opacity: 1; transform: translateX(0); } }
@media(min-width:1100px) { .qa-reference-open .qa-shell { width: min(860px,calc(100% - var(--qa-reference-width) - 64px)); margin-left: max(32px,calc((100% - var(--qa-reference-width) - 860px)/2)); margin-right: 0; } }
@media(max-width:1099px) { .qa-reference-panel { width: min(560px,calc(100% - 16px)); top: max(14px,env(safe-area-inset-top,0px)); bottom: 0; right: 0; } }
@media(max-width:640px) { .qa-reference-panel { border-radius: 22px 0 0 0; }.qa-reference-header { padding: 24px 22px 18px; }.qa-reference-header h2 { font-size: 24px; }.qa-reference-tabs { padding: 0 22px 18px; }.qa-reference-body { padding: 24px 20px calc(28px + env(safe-area-inset-bottom,0px)); }.qa-reference-title { font-size: 23px; } }
@media(prefers-reduced-motion:reduce) { .qa-reference-panel { animation: none; } }
.qa-answer-actions { display: flex; align-items: center; gap: 14px; margin-top: 12px; font-size: 13px; color: #83889b; }.qa-answer-actions a { color: #675cad; }.qa-status { color: #757a97; font-size: 15px; }.qa-status::before { content: ''; display: inline-block; width: 12px; height: 12px; border: 2px solid #dcd9f3; border-top-color: #7e70d8; border-radius: 50%; margin-right: 10px; animation: qa-spin 1s linear infinite; }.qa-status[data-failed]::before { display: none; }.qa-form-error { color: #a34050; font-size: 14px; margin-top: 9px; }.qa-chatting .qa-intro { display: none; }.qa-chatting .qa-compose-wrap { position: sticky; bottom: 0; z-index: 3; padding-top: 12px; background: linear-gradient(180deg,#f5f6fc00,#f5f6fc 16px); }.qa-chatting .qa-shell { padding-top: 114px; }.qa-chatting .qa-composer { box-shadow: 0 0 22px #3d437e0b; }
.materials-cover .qa-composer { max-width: 550px; margin-top: 20px; }.gateway-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }.gateway-ask { background: linear-gradient(120deg,#eeeaff,#fafbff); border-color: #cbc5ed; }
@keyframes qa-spin { to { transform: rotate(360deg); } }
@media(max-width: 900px) { .gateway-card { padding: 22px; }.gateway-meta > span:first-child { display: none; } }
@media(max-width: 640px) { .qa-shell { width: calc(100% - 32px); padding: 112px 0 40px; }.qa-intro { margin-bottom: 26px; }.qa-intro h1 { font-size: 38px; }.qa-intro > p:last-child { font-size: 15px; }.qa-composer { padding: 14px 14px 10px; border-radius: 22px; }.qa-composer textarea { font-size: 16px; min-height: 48px; }.qa-composer-tools { margin-top: 4px; }.qa-send { width: 36px; height: 36px; flex-basis: 36px; }.qa-model-control { gap: 6px; }.qa-quota { font-size: 12px; }.qa-examples { justify-content: flex-start; padding-top: 12px; }.qa-examples > p { text-align: left; }.qa-examples button { text-align: left; padding: 10px 12px; }.qa-answer { font-size: 16px; }.qa-question { max-width: 96%; padding: 12px 16px; }.qa-under-composer { font-size: 12px; padding-inline: 2px; }.qa-chatting .qa-shell { padding-top: 94px; padding-bottom: 0; }.qa-chatting .qa-compose-wrap { padding-bottom: env(safe-area-inset-bottom,0px); }.qa-chatting .site-footer { display: none; }.materials-cover .qa-composer { margin-top: 16px; }.gateway-grid { grid-template-columns: repeat(3,minmax(0,1fr)); gap: 8px; }.gateway-card { padding: 13px 10px; }.gateway-card h2,html[lang="en"] .gateway-card h2 { font-size: 20px; padding: 0; letter-spacing: 0; }.gateway-card .gateway-bottom { display: none; }.gateway-meta { font-size: 12px; }.gateway-card .gateway-meta { gap: 0; }.materials-cover .cover-content { padding-bottom: 414px; } }
@media(prefers-reduced-motion: reduce) { .qa-status::before { animation: none; } }
[hidden] { display: none !important; }
.qa-admin { width: min(1040px,calc(100% - 40px)); }.qa-admin .qa-intro h1 { font-size: 38px; }.qa-admin-panel { margin-bottom: 20px; padding: 24px; background: #ffffffb8; border: 1px solid #dfe1ee; border-radius: 20px; }.qa-admin-panel h2 { font: 700 23px/1.5 var(--font-display); color: #292e60; margin-bottom: 18px; }.qa-admin label { display: block; font-size: 14px; color: #616784; }.qa-admin input { width: 100%; padding: 10px 12px; border: 1px solid #d5d9eb; border-radius: 10px; background: #fff; font-size: 16px; margin-top: 6px; color: #373d58; }.qa-admin button { background: #594fc4; color: #fff; border: 0; border-radius: 10px; padding: 11px 16px; cursor: pointer; white-space: nowrap; font-size: 14px; }.qa-admin button:disabled { opacity: .6; cursor: wait; }.qa-admin-inline { display: flex; gap: 12px; align-items: end; max-width: 440px; }.qa-member-form { display: grid; grid-template-columns: 1fr 1fr auto; align-items: end; gap: 12px; }.qa-admin-note { color: #83899f; font-size: 13px; line-height: 1.8; margin-top: 14px; }.qa-admin-totals { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; margin-bottom: 20px; }.qa-total { padding: 22px; border-radius: 18px; background: #eae8f9; color: #61618e; font-size: 14px; }.qa-total strong { display: block; color: #383572; font-size: 28px; margin: 8px 0; }.qa-admin-members { margin-top: 20px; }.qa-member-row { display: grid; grid-template-columns: 1fr 1.3fr auto; gap: 12px; align-items: center; padding: 14px 0; border-top: 1px solid #e2e4ef; font-size: 14px; color: #686f8c; }.qa-member-row strong { color: #34395d; }.qa-member-row button { background: #efedf9; color: #675db1; }.qa-member-row progress { display: block; width: 100%; max-width: 220px; height: 5px; margin-top: 7px; accent-color: #7566d5; }.qa-admin-table { overflow-x: auto; }.qa-admin-table table { width: 100%; font-size: 14px; border-collapse: collapse; color: #68708a; }.qa-admin-table th,.qa-admin-table td { padding: 12px 10px; border-bottom: 1px solid #eceef5; text-align: left; white-space: nowrap; }.qa-admin-table th { font-weight: 500; color: #464d73; }.qa-admin-message { font-size: 14px; color: #6353b3; margin-bottom: 16px; }.qa-admin-message[data-error] { color: #a34951; }
@media(max-width:640px) { .qa-admin { width: calc(100% - 28px); }.qa-admin-panel { padding: 18px; }.qa-admin .qa-intro h1 { font-size: 30px; }.qa-member-form { grid-template-columns: 1fr; }.qa-admin-totals { gap: 10px; }.qa-total { padding: 16px; }.qa-total strong { font-size: 23px; }.qa-member-row { grid-template-columns: 1fr auto; }.qa-member-row > div { grid-column: 1; }.qa-member-row button { grid-column: 2; grid-row: span 2; } }

.qa-answer[data-streaming]::after { content: ''; display: inline-block; width: 5px; height: 16px; border-radius: 2px; margin-left: 4px; background: #887bdd; vertical-align: text-bottom; }