:root{color-scheme:light;--bg: #f4f8ff;--bg-strong: #e8f0ff;--surface: rgba(248, 251, 255, .9);--surface-strong: #fbfdff;--surface-muted: #eef5ff;--border: rgba(78, 132, 255, .16);--border-strong: rgba(47, 109, 246, .24);--text: #1f2f4d;--text-soft: #6c7d98;--brand: #4e84ff;--brand-deep: #2f6df6;--brand-soft: rgba(78, 132, 255, .14);--accent: #8fd5ff;--accent-soft: rgba(143, 213, 255, .24);--danger: #da6c8f;--shadow-lg: 0 28px 70px rgba(56, 107, 210, .18);--shadow-md: 0 16px 40px rgba(56, 107, 210, .14);--radius-xl: 28px;--radius-lg: 22px;--radius-md: 16px;--radius-sm: 12px}*{box-sizing:border-box}html,body,#app{min-height:100%;margin:0}body{font-family:"Alibaba PuHuiTi 3.0",HarmonyOS Sans SC,PingFang SC,Microsoft YaHei,sans-serif;color:var(--text);background:radial-gradient(circle at 10% 20%,rgba(170,205,255,.42),transparent 24%),radial-gradient(circle at 82% 16%,rgba(120,205,255,.32),transparent 26%),radial-gradient(circle at 48% 8%,rgba(248,252,255,.98),transparent 34%),linear-gradient(180deg,#fbfdff,#f4f8ff 54%,#ecf3ff);background-attachment:fixed}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;background-image:linear-gradient(rgba(117,160,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(117,160,255,.05) 1px,transparent 1px);background-size:36px 36px;-webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.5),transparent 92%);mask-image:linear-gradient(180deg,rgba(0,0,0,.5),transparent 92%)}button,input,textarea,select{font:inherit}a{color:inherit;text-decoration:none}#app{position:relative}.shell{display:grid;grid-template-columns:300px minmax(0,1fr);min-height:100vh;gap:20px;padding:20px}.sidebar{display:flex;flex-direction:column;gap:22px;position:sticky;top:20px;height:calc(100vh - 40px);min-height:0;padding:28px 22px;border:1px solid var(--border);border-radius:32px;background:linear-gradient(180deg,#fcfefff2,#eff6fff0);box-shadow:var(--shadow-lg);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);overflow:hidden}.brand{display:flex;align-items:center;gap:14px}.brand-mark{display:grid;place-items:center;width:52px;height:52px;border-radius:18px;background:linear-gradient(135deg,#71a6ff,#4e84ff 48%,#6edbff);color:#fff;font-size:24px;font-weight:800;letter-spacing:.06em;box-shadow:0 18px 40px #386bd23d}.brand-title{font-size:18px;font-weight:800;letter-spacing:.02em}.brand-subtitle{margin-top:4px;color:var(--text-soft);font-size:13px;line-height:1.6}.role-pill{width:fit-content;padding:9px 14px;border:1px solid rgba(78,132,255,.2);border-radius:999px;background:var(--brand-soft);color:var(--brand-deep);font-size:13px;font-weight:700}.nav{display:flex;flex-direction:column;gap:10px;min-height:0;overflow-y:auto;padding-right:4px}.nav-item{width:100%;padding:14px 16px;border:1px solid transparent;border-radius:18px;background:transparent;color:var(--text-soft);text-align:left;font-weight:700;transition:.22s ease;cursor:pointer}.nav-item:hover{color:var(--text);background:#ffffff9e;border-color:var(--border);transform:translate(2px)}.nav-item.active{color:var(--brand-deep);background:linear-gradient(135deg,#4e84ff2e,#8fd5ff38);border-color:#4e84ff3d;box-shadow:0 10px 22px #4e84ff1a,inset 0 1px #fffc}.content{display:flex;flex-direction:column;min-width:0;min-height:calc(100vh - 40px);gap:20px}.content-header{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;padding:26px 30px;border:1px solid var(--border);border-radius:30px;background:linear-gradient(180deg,#fcfdfff0,#eef5ffeb);box-shadow:var(--shadow-md)}.content-header h1{margin:0;font-size:30px;line-height:1.1}.content-header p{margin:8px 0 0;color:var(--text-soft);max-width:720px}.content-body{flex:1;display:flex;flex-direction:column;min-width:0}.content-body>*{flex:1;min-height:100%}.admin-shell .content,.admin-shell .content-body{min-height:max(720px,calc(100dvh - 40px))}.admin-shell .content-body>*,.admin-shell .page-card,.admin-shell .embedded-config-view{min-height:max(720px,calc(100dvh - 180px))}.admin-shell .el-drawer,body>.el-drawer,body>.el-overlay .el-drawer{height:100dvh!important;min-height:100dvh;max-height:100dvh;display:flex;flex-direction:column}.admin-shell .el-drawer__body,body>.el-drawer .el-drawer__body,body>.el-overlay .el-drawer .el-drawer__body{flex:1;min-height:0;overflow-y:auto}.nav::-webkit-scrollbar,.table-shell::-webkit-scrollbar{width:10px}.nav::-webkit-scrollbar-track,.table-shell::-webkit-scrollbar-track{background:#7091d014;border-radius:999px}.nav::-webkit-scrollbar-thumb,.table-shell::-webkit-scrollbar-thumb{background:#4e84ff4d;border-radius:999px}.nav::-webkit-scrollbar-thumb:hover,.table-shell::-webkit-scrollbar-thumb:hover{background:#4e84ff70}.page-card{display:flex;flex-direction:column;padding:28px;min-height:100%;border:1px solid var(--border);border-radius:var(--radius-xl);background:linear-gradient(180deg,#fcfdfff5,#eff6ffeb);box-shadow:var(--shadow-md);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.section-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:20px}.section-header.compact{margin-bottom:16px}.section-header h2,.section-header h3{margin:0;font-size:24px}.section-header p{margin:8px 0 0;color:var(--text-soft);line-height:1.6}.toolbar{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:18px}.toolbar-input,.toolbar-select,.field input,.field textarea,.field select{width:100%;padding:13px 16px;border:1px solid var(--border);border-radius:16px;background:#ffffffdb;color:var(--text);outline:none;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease}.toolbar-input:focus,.toolbar-select:focus,.field input:focus,.field textarea:focus,.field select:focus{border-color:#4e84ff61;box-shadow:0 0 0 4px #4e84ff24}.toolbar-input{min-width:220px;flex:1 1 220px}.toolbar-select{min-width:160px}.dialog-form{display:grid;gap:16px}.field{display:grid;gap:8px}.field>span{font-size:14px;font-weight:700;color:var(--text-soft)}.primary-btn,.ghost-btn,.inline-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:16px;font-weight:700;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease}.primary-btn{padding:13px 18px;border:1px solid rgba(78,132,255,.26);background:linear-gradient(135deg,#67a4ff,#4e84ff 58%,#63d2ff);color:#fff;box-shadow:0 14px 30px #386bd23d}.primary-btn:hover{transform:translateY(-1px);box-shadow:0 18px 34px #386bd247}.ghost-btn{padding:12px 18px;border:1px solid var(--border-strong);background:#fff9;color:var(--text)}.ghost-btn:hover{transform:translateY(-1px);background:#fffc}.inline-btn{padding:8px 12px;border:1px solid var(--border);background:#ffffffa3;color:var(--text-soft);font-size:13px}.inline-btn:hover{color:var(--brand-deep);border-color:#2f6df633}.inline-btn.danger{color:var(--danger)}.el-overlay-message-box{background:radial-gradient(circle at 24% 16%,rgba(143,213,255,.18),transparent 24%),radial-gradient(circle at 76% 12%,rgba(78,132,255,.14),transparent 28%),#16233a6b;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.el-message-box{position:relative;width:min(460px,calc(100vw - 36px));padding:0;overflow:hidden;border:1px solid rgba(255,255,255,.72);border-radius:28px;background:radial-gradient(circle at top right,rgba(143,213,255,.2),transparent 34%),linear-gradient(180deg,#fcfefffa,#eff6fff5);box-shadow:0 28px 80px #142b5a38,inset 0 1px #ffffffdb;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.el-message-box:before{content:"";position:absolute;inset:0 0 auto;height:5px;background:linear-gradient(90deg,#67a4ff,#4e84ff 54%,#63d2ff)}.el-message-box__header{padding:28px 30px 8px}.el-message-box__title{color:var(--text);font-size:20px;font-weight:900;letter-spacing:-.01em}.el-message-box__headerbtn{top:20px;right:20px;width:34px;height:34px;border-radius:999px;transition:background .18s ease,transform .18s ease}.el-message-box__headerbtn:hover{background:#4e84ff1a;transform:rotate(90deg)}.el-message-box__headerbtn .el-message-box__close{color:var(--text-soft);font-size:18px;font-weight:800}.el-message-box__content{display:flex;align-items:flex-start;gap:14px;padding:12px 30px 22px;color:var(--text-soft);font-size:15px;line-height:1.8}.el-message-box__container{display:flex;align-items:flex-start;gap:14px}.el-message-box__status{position:static;flex:0 0 auto;display:grid;place-items:center;width:34px;height:34px;margin-top:2px;border-radius:14px;font-size:20px!important;box-shadow:inset 0 1px #ffffffbd;transform:none}.el-message-box__status.el-message-box-icon--warning{background:#ffb74d29;color:#b97007}.el-message-box__status.el-message-box-icon--error{background:#da6c8f24;color:var(--danger)}.el-message-box__status.el-message-box-icon--success{background:#23b87524;color:#188552}.el-message-box__status.el-message-box-icon--info{background:var(--brand-soft);color:var(--brand-deep)}.el-message-box__message{min-height:34px;padding-left:0!important}.el-message-box__message p{margin:0}.el-message-box__btns{gap:12px;padding:0 30px 30px}.el-message-box__btns .el-button{min-width:92px;height:42px;padding:0 18px;border-radius:14px;border-color:var(--border-strong);background:#ffffffad;color:var(--text);font-weight:800;transition:transform .18s ease,box-shadow .18s ease,background .18s ease}.el-message-box__btns .el-button:hover,.el-message-box__btns .el-button:focus{border-color:#4e84ff57;background:#ffffffe6;color:var(--brand-deep);transform:translateY(-1px)}.el-message-box__btns .el-button--primary{border-color:#4e84ff47;background:linear-gradient(135deg,#67a4ff,#4e84ff 58%,#63d2ff)!important;color:#fff!important;box-shadow:0 14px 28px #386bd23d}.el-message-box__btns .el-button--primary:hover,.el-message-box__btns .el-button--primary:focus,.el-message-box__btns .el-button--primary:active{border-color:#4e84ff61;background:linear-gradient(135deg,#4f93ff,#356ee8 58%,#4fc7f4)!important;color:#fff!important;box-shadow:0 18px 34px #386bd24d}.table-shell{overflow:auto;max-height:520px;border:1px solid var(--border);border-radius:22px;background:#f7faffd6}.data-table{width:100%;border-collapse:collapse}.data-table th,.data-table td{padding:16px 18px;border-bottom:1px solid rgba(112,145,208,.12);text-align:left;vertical-align:middle}.data-table th{position:sticky;top:0;z-index:1;color:var(--text-soft);font-size:13px;font-weight:800;letter-spacing:.02em;background:#ebf3fff5;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.data-table tr:last-child td{border-bottom:none}.action-cell{display:flex;flex-wrap:wrap;gap:8px}.status-chip{display:inline-flex;align-items:center;padding:7px 12px;border-radius:999px;font-size:12px;font-weight:800}.status-chip.active,.status-chip.published{background:#4e84ff24;color:var(--brand-deep)}.status-chip.disabled,.status-chip.archived{background:#545f661a;color:#61717c}.status-chip.draft{background:var(--accent-soft);color:#2c72c9}.empty-state{padding:28px 18px;color:var(--text-soft);text-align:center;border:1px dashed rgba(112,145,208,.22);border-radius:18px;background:#f8fbffbd}.empty-state.inline{padding:18px}.course-grid,.summary-grid,.dashboard-grid{display:grid;gap:18px}.course-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}.course-card,.summary-card{padding:22px;border:1px solid var(--border);border-radius:24px;background:linear-gradient(180deg,#fcfdffdb,#eff6ffeb);box-shadow:0 14px 30px #386bd21f}.card-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}.card-top h3{margin:0;font-size:18px}.card-meta{margin-bottom:10px;color:var(--text-soft)}.summary-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));margin-bottom:18px}.summary-value{margin-top:10px;font-size:30px;font-weight:800}.summary-label{color:var(--text-soft);font-weight:700}.summary-hint{margin-top:10px;color:var(--text-soft);line-height:1.5;font-size:13px}.dashboard-grid{grid-template-columns:repeat(auto-fit,minmax(320px,1fr));margin-top:18px}.stat-list{display:grid;gap:12px}.stat-row{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-radius:16px;background:#ffffff9e;border:1px solid rgba(112,145,208,.12)}.upload-btn{position:relative;overflow:hidden}.full{width:100%}.login-page{display:flex;align-items:center;justify-content:flex-end;min-height:100vh;padding:48px 7vw;background:linear-gradient(90deg,#04192780,#0419272e 48%,#f4f8fa9e),var(--login-bg, none) center / cover no-repeat;background-size:cover;background-position:center}.student-shell{min-height:100vh}.student-topbar{position:sticky;top:0;z-index:30;border-bottom:1px solid rgba(112,145,208,.16);background:#f9fcffe0;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.student-topbar-inner,.student-main{width:min(1280px,calc(100vw - 32px));margin:0 auto}.student-topbar-inner{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:18px;min-height:78px}.student-brand{display:flex;align-items:center;gap:12px;min-width:0}.student-brand-mark{width:42px;height:42px;border:none;border-radius:14px;background:linear-gradient(135deg,#71a6ff,#4e84ff 68%,#58cbff);color:#fff;font-size:16px;font-weight:800;cursor:pointer;box-shadow:0 12px 24px #386bd238}.student-brand-copy{min-width:0}.student-brand-title{font-size:18px;font-weight:800}.student-brand-subtitle{margin-top:3px;color:var(--text-soft);font-size:12px;white-space:nowrap}.student-nav{display:flex;align-items:center;gap:8px;justify-content:center;flex-wrap:wrap}.student-nav-item,.student-user{border:1px solid transparent;background:transparent}.student-nav-item{padding:11px 16px;border-radius:999px;color:var(--text-soft);font-weight:700;cursor:pointer;transition:.2s ease}.student-nav-item:hover,.student-nav-item.active{color:var(--brand-deep);border-color:#4e84ff29;background:#4e84ff1f}.student-user{display:inline-flex;align-items:center;gap:10px;padding:8px 12px 8px 8px;border-radius:999px;cursor:pointer;color:var(--text);transition:.2s ease}.student-user:hover{background:#ffffffb3;border-color:var(--border)}.student-user-name{font-weight:700}.student-main{padding:28px 0 32px}.login-hero,.login-card{position:relative;overflow:hidden}.login-hero{position:absolute;left:7vw;top:50%;width:min(960px,calc(86vw - 440px));max-width:none;padding:0;color:#fff;overflow:visible;text-shadow:0 2px 18px rgba(2,16,24,.36);transform:translateY(-36%)}.login-hero:after{content:none}.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:#ffffffb8;color:var(--brand-deep);font-size:13px;font-weight:800;letter-spacing:.04em}.login-hero h1{margin:16px 0 0;max-width:560px;font-size:clamp(34px,4.2vw,58px);line-height:1.06;letter-spacing:-.035em}.login-hero p{max-width:100%;margin:14px 0 0;color:#ffffffdb;font-size:16px;line-height:1.75;white-space:nowrap}.hero-feature-grid{display:none}.hero-feature{padding:18px;border:1px solid rgba(44,67,91,.08);border-radius:22px;background:#ffffff94;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.hero-feature-label{color:var(--text-soft);font-size:13px;font-weight:700}.hero-feature-value{margin-top:10px;font-size:20px;font-weight:800}.hero-flow{display:grid;gap:14px;margin-top:26px}.hero-flow-row{display:flex;align-items:center;gap:12px;padding:16px 18px;border-radius:18px;background:#ffffff8f;border:1px solid rgba(44,67,91,.08)}.hero-flow-index{display:grid;place-items:center;width:30px;height:30px;border-radius:10px;background:linear-gradient(135deg,#67a4ff,#4e84ff 70%,#63d2ff);color:#fff;font-size:13px;font-weight:800}.hero-flow-title{font-weight:800}.hero-flow-text{color:var(--text-soft);font-size:14px}.login-card{display:flex;flex-direction:column;justify-content:center;width:min(390px,calc(100vw - 36px));min-height:auto;padding:28px;border:1px solid rgba(255,255,255,.68);border-radius:28px;background:#ffffffdb;box-shadow:0 26px 70px #0314232e;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.card-header h2{margin:0;font-size:28px}.card-header p{margin:10px 0 0;color:var(--text-soft);line-height:1.7}.tab-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:26px 0 22px;padding:8px;border-radius:18px;background:#e8f1fff0}.tab-btn{padding:13px 16px;border:none;border-radius:14px;background:transparent;color:var(--text-soft);font-weight:800;cursor:pointer;transition:.2s ease}.tab-btn.active{background:#ffffffeb;color:var(--brand-deep);box-shadow:0 10px 18px #4e84ff24}.form-area{display:grid;gap:15px;margin-top:24px}.demo-users{display:grid;gap:10px;margin-top:8px;padding-top:16px;border-top:1px solid rgba(44,67,91,.08)}.demo-title{font-size:13px;font-weight:800;color:var(--text-soft)}.demo-btn{padding:12px 14px;border:1px solid rgba(44,67,91,.1);border-radius:14px;background:#ffffffa3;color:var(--text);text-align:left;cursor:pointer;transition:.2s ease}.demo-btn:hover{border-color:#4e84ff38;transform:translateY(-1px)}.sso-state{padding:24px;border:1px dashed rgba(112,145,208,.24);border-radius:24px;background:#ffffff80}.sso-state p{margin:0 0 18px;color:var(--text-soft);line-height:1.7}.login-page-help-link{position:fixed;top:28px;right:34px;z-index:5;border:none;padding:8px 0;background:transparent;color:#fff;font:inherit;font-size:14px;font-weight:800;cursor:pointer;text-decoration:underline;text-underline-offset:4px;text-shadow:0 2px 10px rgba(4,25,39,.34)}.login-help-note{margin-top:18px;padding:14px 16px;border:1px solid rgba(78,132,255,.14);border-radius:18px;background:#4e84ff14;color:var(--brand-deep);line-height:1.6;font-size:14px;font-weight:600}.help-center-page{width:min(1240px,calc(100vw - 32px));margin:0 auto;padding:24px 0 40px}.help-center-hero{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(320px,.8fr);gap:20px;align-items:stretch}.help-center-hero-copy,.help-center-hero-panel,.help-center-sidebar-card,.help-article-section{border:1px solid var(--border);border-radius:30px;box-shadow:var(--shadow-md);background:linear-gradient(180deg,#fcfdfff5,#eff6fff0)}.help-center-hero-copy{padding:34px;background:radial-gradient(circle at top left,rgba(143,213,255,.22),transparent 28%),linear-gradient(180deg,#fcfdfff5,#eff6fff0)}.help-center-hero-copy h1{margin:18px 0 0;font-size:clamp(34px,5vw,52px);line-height:1.08}.help-center-hero-copy>p{margin:16px 0 0;max-width:760px;color:var(--text-soft);line-height:1.8;font-size:16px}.help-center-search-shell{margin-top:26px;padding:20px;border:1px solid rgba(78,132,255,.16);border-radius:24px;background:#ffffff9e}.help-center-search-label,.help-center-panel-title,.help-center-sidebar-title,.help-center-overview-label,.help-stage-tag,.help-role-guide-audience{color:var(--text-soft);font-size:13px;font-weight:800;letter-spacing:.02em}.help-center-search-chips{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px}.help-center-chip{padding:11px 14px;border:1px solid rgba(78,132,255,.16);border-radius:999px;background:#ffffffe6;color:var(--text);font-weight:700;cursor:pointer;transition:.2s ease}.help-center-chip:hover{transform:translateY(-1px);color:var(--brand-deep);border-color:#4e84ff47}.help-center-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.help-center-hero-panel{padding:28px}.help-center-panel-list{display:grid;gap:14px;margin-top:18px}.help-center-panel-item,.help-stage-card{padding:18px;border:1px solid var(--border);border-radius:22px;background:#ffffffbd}.help-center-panel-item{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start}.help-center-panel-item h3,.help-center-overview-card h2,.help-article-card h3,.help-stage-card h3,.help-role-guide-card h3,.help-faq-item h3{margin:0}.help-center-panel-item p,.help-center-overview-card p,.help-article-card p,.help-stage-summary,.help-role-guide-summary,.help-faq-item p,.help-role-hint,.help-center-sidebar-card p{margin:10px 0 0;color:var(--text-soft);line-height:1.7}.help-center-panel-step,.help-article-index{display:grid;place-items:center;min-width:40px;height:40px;padding:0 10px;border-radius:12px;background:linear-gradient(135deg,#67a4ff,#4e84ff 70%,#63d2ff);color:#fff;font-weight:800}.help-center-body{display:grid;grid-template-columns:260px minmax(0,1fr);gap:20px;margin-top:20px}.help-center-sidebar{position:sticky;top:20px;align-self:start;display:grid;gap:16px}.help-center-sidebar-card{padding:22px}.help-center-sidebar-link{width:100%;margin-top:10px;padding:12px 14px;border:1px solid transparent;border-radius:16px;background:#ffffffa3;color:var(--text-soft);text-align:left;font-weight:700;cursor:pointer;transition:.2s ease}.help-center-sidebar-link:hover{color:var(--brand-deep);border-color:#4e84ff33;background:#4e84ff14}.help-center-sidebar-link.active{color:var(--brand-deep);border-color:#4e84ff47;background:#4e84ff24;box-shadow:inset 0 1px #fffc}.help-center-content{display:grid;gap:20px}.help-article-section{padding:28px}.help-article-grid,.help-page-map-grid,.help-role-guide-grid,.help-faq-grid{display:grid;gap:16px}.help-article-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.help-article-card,.help-role-guide-card,.help-faq-item{padding:22px;border:1px solid var(--border);border-radius:24px;background:#ffffffbd}.help-article-card{display:grid;gap:14px;align-items:start}.help-stage-list{display:grid;gap:16px}.help-page-map-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.help-page-map-card{display:grid;gap:18px;padding:22px;border:1px solid var(--border);border-radius:24px;background:#ffffffbd}.help-page-map-preview{overflow:hidden;border:1px solid rgba(78,132,255,.14);border-radius:20px;background:linear-gradient(180deg,#f7fbfff5,#eef5ffdb);aspect-ratio:16 / 10}.help-page-map-image{display:block;width:100%;height:100%;object-fit:cover}.help-page-map-content h3{margin:0}.help-page-map-content p{margin:10px 0 0;color:var(--text-soft);line-height:1.7}.help-page-map-focus{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}.help-page-map-tip{margin-top:16px;padding:14px 16px;border-radius:16px;background:#4e84ff14;color:var(--brand-deep);line-height:1.6;font-size:14px;font-weight:600}.help-stage-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,.8fr);gap:16px;align-items:start}.help-outcome-list,.help-role-checklist{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.help-outcome-chip,.help-role-checklist-chip{display:inline-flex;align-items:center;padding:9px 12px;border-radius:999px;background:#4e84ff1a;color:var(--brand-deep);font-size:13px;font-weight:800}.help-role-filter{display:flex;flex-wrap:wrap;gap:10px}.help-role-chip{padding:11px 16px;border:1px solid var(--border);border-radius:999px;background:#ffffffbd;color:var(--text-soft);font-weight:700;cursor:pointer;transition:.2s ease}.help-role-chip:hover,.help-role-chip.active{color:var(--brand-deep);border-color:#4e84ff47;background:#4e84ff1f}.help-role-guide-grid{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:18px}.help-role-scenarios{margin-top:16px}.help-role-scenarios-title{color:var(--text-soft);font-size:13px;font-weight:800}.help-role-step-list{margin:16px 0 0;padding-left:20px;color:var(--text);line-height:1.8}.help-faq-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.manual-hero{align-items:stretch}.manual-hero-panel{display:flex;flex-direction:column}.manual-stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:18px}.manual-stat{display:grid;gap:8px;min-height:112px;padding:18px;border:1px solid rgba(78,132,255,.16);border-radius:20px;background:#ffffffb8}.manual-stat strong{color:var(--brand-deep);font-size:28px;line-height:1}.manual-stat span{color:var(--text-soft);line-height:1.5;font-size:13px;font-weight:700}.manual-sidebar-card{max-height:calc(100vh - 40px);overflow-y:auto}.manual-nav-group{display:grid;gap:8px;margin-top:18px}.manual-nav-group-title,.manual-audience,.manual-step-path,.manual-route-pill{color:var(--text-soft);font-size:13px;font-weight:800}.manual-nav-group-title{padding:0 4px}.manual-route-pill{display:inline-flex;max-width:100%;margin-top:14px;padding:8px 10px;border-radius:999px;background:#4e84ff1a;color:var(--brand-deep);word-break:break-all}.manual-page{display:grid;gap:24px}.manual-page-header{display:flex;align-items:flex-start;justify-content:space-between;gap:18px}.manual-page-header h2{margin:8px 0 0;font-size:32px;line-height:1.18}.manual-page-header p{max-width:780px;margin:10px 0 0;color:var(--text-soft);line-height:1.8}.manual-cover,.manual-inline-image,.manual-screenshot-card{overflow:hidden;margin:0;border:1px solid rgba(78,132,255,.14);background:#ffffffc7}.manual-cover{border-radius:24px}.manual-cover img{display:block;width:100%;max-height:420px;object-fit:cover;object-position:top}.manual-cover figcaption,.manual-inline-image figcaption,.manual-screenshot-card figcaption{padding:12px 14px;color:var(--text-soft);line-height:1.6;font-size:13px}.manual-block{display:grid;gap:16px}.manual-block h3{margin:0;font-size:22px}.manual-highlight-grid,.manual-screenshot-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.manual-highlight,.manual-tip,.manual-check-item{border:1px solid var(--border);border-radius:18px;background:#ffffffb8}.manual-highlight{padding:16px 18px;color:var(--text);line-height:1.7;font-weight:700}.manual-step-list{display:grid;gap:18px}.manual-step-card{display:grid;grid-template-columns:auto minmax(0,1fr);gap:16px;padding:20px;border:1px solid var(--border);border-radius:24px;background:#ffffffc2}.manual-step-number{display:grid;place-items:center;width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,#67a4ff,#4e84ff 70%,#63d2ff);color:#fff;font-weight:900}.manual-step-body{min-width:0}.manual-step-top{display:flex;justify-content:space-between;gap:12px}.manual-step-card h4{margin:0;font-size:18px}.manual-step-card p{margin:10px 0 0;color:var(--text-soft);line-height:1.8}.manual-step-path{margin-top:6px;color:var(--brand-deep);word-break:break-all}.manual-action-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}.manual-action-row span{display:inline-flex;align-items:center;padding:8px 11px;border-radius:999px;background:#4e84ff1a;color:var(--brand-deep);font-size:13px;font-weight:800}.manual-inline-image{margin-top:16px;border-radius:18px}.manual-inline-image img,.manual-screenshot-card img{display:block;width:100%;aspect-ratio:16 / 9;object-fit:cover;object-position:top}.manual-screenshot-card{border-radius:20px}.manual-screenshot-card figcaption{display:grid;gap:4px}.manual-screenshot-card strong{color:var(--text)}.manual-checklist,.manual-tip-list{display:grid;gap:10px}.manual-check-item{display:flex;align-items:flex-start;gap:10px;padding:13px 15px;color:var(--text);line-height:1.6;font-weight:700}.manual-check-item input{width:18px;height:18px;margin-top:2px;accent-color:var(--brand-deep)}.manual-tip{padding:15px 17px;color:var(--brand-deep);line-height:1.7;font-weight:700;background:#4e84ff14}@media(max-width:1080px){.login-page{justify-content:center}.login-hero{display:none}.help-center-hero,.help-center-body,.help-article-grid,.help-page-map-grid,.help-role-guide-grid,.help-faq-grid{grid-template-columns:1fr}.help-center-sidebar{position:static}.help-stage-head{grid-template-columns:1fr}}@media(max-width:960px){.shell{grid-template-columns:1fr;padding:14px}.student-topbar-inner,.student-main{width:min(100vw - 24px,1280px)}.student-topbar-inner{grid-template-columns:1fr;padding:14px 0}.student-nav{justify-content:flex-start}.student-brand-subtitle{white-space:normal}.sidebar{position:static;height:auto;padding:20px;overflow:visible}.content-header,.page-card{padding:20px}.nav,.content{overflow:visible}.content{min-height:auto}.content-body{display:block;flex:initial}.content-body>*{min-height:auto}.table-shell{max-height:none}}@media(max-width:640px){.login-page{padding:14px}.help-center-page{width:min(100vw - 24px,1120px);padding:14px 0 24px}.help-center-hero-copy,.help-center-hero-panel,.help-center-sidebar-card,.help-article-section{padding:22px;border-radius:24px}.student-main{padding-top:18px}.login-card{padding:22px}.content-header{flex-direction:column}.card-header{display:grid;gap:14px}.help-center-search-shell{padding:16px}.section-header{flex-direction:column;align-items:stretch}}