:root{--ink:#18223b;--ink2:#263753;--muted:#75829a;--soft:#a4aec0;--blue:#1879ef;--blue2:#eaf3ff;--red:#ef4860;--red2:#fff1f3;--green:#14a77d;--green2:#eaf9f2;--orange:#f3a23a;--orange2:#fff7e9;--purple:#8057c8;--border:#e9edf5;--bg:#f7f9fc;--white:#fff;--shadow:0 5px 26px rgba(34,62,105,.045);--radius:18px;--ui:'Inter','SF Pro Display','PingFang SC','Noto Sans CJK SC','Microsoft YaHei',system-ui,sans-serif}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:var(--ui);color:var(--ink);background:var(--bg);font-size:14px;letter-spacing:-.015em}button,input,textarea,select{font:inherit}button{cursor:pointer}input,textarea,select{color:var(--ink);outline:none}input::placeholder,textarea::placeholder{color:#abb4c4}button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(24,121,239,.18);outline-offset:1px}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}strong{font-weight:680}.shell{display:grid;grid-template-columns:246px minmax(0,1fr) 332px;min-height:100vh}.sidebar{position:sticky;top:0;height:100vh;background:#fff;border-right:1px solid var(--border);display:flex;flex-direction:column;padding:26px 14px 16px;z-index:12}.side-head{padding:4px 11px 25px}.brand-logo{display:block;width:161px;height:38px;object-fit:contain;object-position:left center}.side-tag{margin-top:8px;color:#768399;font-size:11px;font-weight:650;letter-spacing:.13em}.beta{font-size:9px;padding:2px 7px;border:1px solid #dce4f1;border-radius:40px;letter-spacing:0;margin-left:6px;color:#8896ab}.workspace-pill{display:flex;align-items:center;gap:9px;background:#f7f9fd;border:1px solid #eef2f8;border-radius:13px;padding:10px;margin:0 4px 19px;min-width:0}.workspace-mark{width:33px;height:33px;background:#e8eef9;border-radius:10px;display:grid;place-items:center;color:#567bad}.workspace-mark svg{width:20px}.workspace-text{display:flex;flex-direction:column;gap:3px;min-width:0;flex:1}.workspace-text small{font-size:10px;color:#8c98aa}.workspace-text strong{font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.workspace-online{height:7px;width:7px;border-radius:50%;background:#13b88a}.nav-scroll{overflow-y:auto;padding:0 4px 10px;flex:1;scrollbar-width:thin}.nav-main,.nav-step{width:100%;border:none;background:transparent;display:flex;align-items:center;gap:11px;text-align:left;border-radius:10px;color:#617087;font-weight:560;line-height:1.25}.nav-main{padding:11px 13px;margin:2px 0;font-size:13px}.nav-main svg{width:17px;height:17px}.nav-main small{margin-left:auto;color:#abb6c6;font-size:10px}.nav-main:hover,.nav-step:hover{background:#f5f8fc;color:var(--ink)}.nav-main.active,.nav-step.active{background:#eaf2ff;color:#1465c8;font-weight:690}.nav-divider{height:1px;background:#edf0f6;margin:13px 8px 15px}.nav-label{font-size:10px;color:#a0adbe;padding:9px 15px;letter-spacing:.11em;font-weight:750}.stage-label{display:flex;align-items:center;gap:9px;padding:16px 12px 8px;color:#66748b;font-size:12px;font-weight:750}.stage-label .stage-mini{width:22px;height:22px;border-radius:7px;display:grid;place-items:center;font-size:13px}.stage-label.a .stage-mini{background:#ffe9ee;color:#d9425b}.stage-label.c .stage-mini{background:#e6f1ff;color:#1879ef}.stage-label.e .stage-mini{background:#e5f7ee;color:#079d74}.nav-step{padding:8px 12px 8px 43px;font-size:12px;gap:8px;font-weight:520}.nav-step .step-check{margin-left:auto;font-size:13px;color:#a8b1c2}.nav-step.done .step-check{color:#11a87e}.side-bottom{padding:16px 12px 4px;border-top:1px solid var(--border)}.tiny-title{font-size:12px;font-weight:720;display:flex;justify-content:space-between}.tiny-title span{color:#1678ee}.track{height:6px;border-radius:99px;background:#edf1f7;overflow:hidden;margin-top:12px}.track span{display:block;height:100%;width:0%;background:linear-gradient(90deg,#f05a70,#1a7bf5,#0eb783);border-radius:inherit;transition:width .3s}.side-bottom p{color:#9ba6b7;font-size:11px;margin:9px 0 15px;line-height:1.7}.side-help{background:none;border:0;color:#637993;padding:3px 0;display:flex;justify-content:space-between;width:100%;font-size:11px}.main-shell{min-width:0;display:flex;flex-direction:column;min-height:100vh}.topbar{height:70px;border-bottom:1px solid var(--border);background:rgba(255,255,255,.94);backdrop-filter:blur(20px);display:flex;align-items:center;justify-content:space-between;padding:0 32px;position:sticky;top:0;z-index:7}.breadcrumb{font-size:12px;color:#66758b;font-weight:620}.breadcrumb span{color:#b6c1ce;margin:0 8px}.topbar-actions,.topbar-left{display:flex;align-items:center;gap:12px}.status-pill{display:flex;align-items:center;gap:7px;background:#f6f8fc;border:1px solid #e8eef4;border-radius:30px;padding:9px 12px;color:#64728a;font-size:11px;font-weight:570}.status-dot{width:7px;height:7px;border-radius:50%;background:#e7a752;display:inline-block;flex:none}.status-dot.live{background:#12bd8f;box-shadow:0 0 0 3px rgba(18,189,143,.1)}.chev{color:#9dabbe;font-size:15px;margin-left:1px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:1px solid transparent;border-radius:11px;padding:10px 15px;font-size:12px;font-weight:720;transition:.18s;white-space:nowrap}.btn svg{width:15px;height:15px}.btn-primary{background:#176dea;color:#fff;box-shadow:0 6px 16px rgba(29,103,216,.12)}.btn-primary:hover{background:#0e61d9;transform:translateY(-1px)}.btn-outline{background:#fff;border-color:#e1e8f2;color:#47607d}.btn-outline:hover{border-color:#bed0ef;background:#f9fbff}.btn-white{background:#fff;color:#174282}.btn-white:hover{background:#f5f9ff}.btn-light{background:#edf4ff;color:#1674de}.btn-warn{background:#fff0f2;color:#cd4360}.btn-small{padding:7px 11px;border-radius:8px;font-size:11px}.btn:disabled{opacity:.5;cursor:not-allowed}.content{flex:1;padding:34px clamp(20px,3vw,50px) 80px;max-width:1340px;width:100%;margin:0 auto;min-width:0}.app-footer{padding:16px clamp(20px,3vw,50px) 21px;border-top:1px solid #ecf0f7;display:flex;justify-content:space-between;gap:12px;color:#a0aec0;font-size:11px}.coach-panel{height:100vh;position:sticky;top:0;background:#fff;border-left:1px solid var(--border);display:flex;flex-direction:column;z-index:9;min-width:0}.coach-head{height:82px;border-bottom:1px solid var(--border);display:flex;align-items:center;padding:18px 19px;gap:10px;flex-shrink:0}.coach-avatar{width:36px;height:36px;background:linear-gradient(140deg,#cce1ff,#e0deff);border-radius:12px;display:grid;place-items:center;color:#417cdb;font-size:25px}.coach-title{font-size:13px;font-weight:760}.coach-model{display:flex;align-items:center;gap:7px;font-size:11px;color:#97a5b6;margin-top:5px}.icon-btn{display:grid;place-items:center;border:0;background:transparent;color:#91a0b4;width:31px;height:31px;border-radius:9px;font-size:21px;margin-left:auto}.icon-btn:hover{background:#f1f5fc}.coach-intro{margin:20px 17px 12px;padding:16px 15px;background:linear-gradient(135deg,#f3f7ff,#f8f9fe);border:1px solid #eef2fd;border-radius:13px}.coach-intro strong{color:#334866;font-size:12px}.coach-intro p{font-size:11px;color:#8290a4;line-height:1.85;margin:6px 0 0}.coach-quick{padding:4px 18px 16px;display:flex;gap:7px;flex-wrap:wrap}.quick-chip{border:1px solid #e6edfb;border-radius:30px;background:#fff;color:#537397;padding:8px 10px;font-size:11px}.quick-chip:hover{border-color:#a9caff;background:#f5f9ff}.chat-log{flex:1;min-height:0;overflow-y:auto;padding:9px 17px 20px;display:flex;flex-direction:column;gap:16px}.assistant-bubble,.chat-user{padding:13px 13px;border-radius:15px;font-size:12px;line-height:1.86;word-break:break-word;white-space:pre-wrap}.assistant-bubble{background:#f6f8fc;border:1px solid #eef1f7;color:#42546f;align-self:stretch}.assistant-bubble span{color:#a0abbc;font-size:11px}.chat-user{background:#176eeb;color:#fff;align-self:flex-end;border-radius:15px 15px 3px 15px;max-width:95%}.coach-compose{padding:13px 15px 16px;border-top:1px solid #edf0f7;background:#fff}.knowledge-switch{display:flex;align-items:center;gap:8px;color:#8593a7;font-size:11px;padding:0 0 11px;cursor:pointer}.knowledge-switch input{accent-color:#2979ea}.compose-row{display:flex;align-items:flex-end;border:1px solid #dfe6f0;border-radius:12px;padding:8px;background:#fff}.compose-row:focus-within{border-color:#8db5f6;box-shadow:0 0 0 3px rgba(26,113,238,.07)}.compose-row textarea{border:none;resize:none;flex:1;min-height:52px;max-height:150px;font-size:12px;padding:6px 6px 6px 4px;line-height:1.6;background:transparent}.send-btn{background:#176dea;color:#fff;border:0;border-radius:9px;width:29px;height:29px;font-size:18px;margin-left:7px;flex:none}.coach-compose small{display:block;color:#b4bdca;font-size:9px;padding:8px 2px 0;line-height:1.6}.loading-large{min-height:50vh;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#95a0b2}.spinner{border:3px solid #e8effa;border-top-color:#347ce9;border-radius:50%;width:28px;height:28px;animation:spin .9s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}
/* General sections */
.page-header{margin:0 0 24px}.eyebrow{color:#6e83a5;text-transform:uppercase;letter-spacing:.14em;font-size:10px;font-weight:810;display:flex;align-items:center;gap:8px}.eyebrow .line{width:21px;height:2px;background:currentColor}.page-title{font-size:clamp(26px,2.8vw,37px);letter-spacing:-.055em;line-height:1.25;margin:9px 0 10px;font-weight:820}.page-lead{max-width:740px;color:#79879c;font-size:13px;line-height:1.9;margin:0}.content-card{border:1px solid #e8edf5;background:#fff;border-radius:18px;box-shadow:var(--shadow)}.hero{border-radius:23px;padding:37px 40px;background:linear-gradient(115deg,#132447,#172c53 66%,#21496d);color:#fff;display:grid;grid-template-columns:1fr minmax(230px,35%);gap:24px;min-height:270px;position:relative;overflow:hidden}.hero:before{content:'';position:absolute;right:-68px;top:-130px;width:430px;height:430px;border:1px solid rgba(181,208,247,.12);border-radius:50%}.hero:after{content:'';position:absolute;right:-20px;top:-67px;width:300px;height:300px;border:1px solid rgba(181,208,247,.09);border-radius:50%}.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;color:#bdcde6;font-size:11px;font-weight:680;letter-spacing:.12em}.hero h1{font-size:clamp(29px,3.8vw,44px);letter-spacing:-.07em;line-height:1.25;margin:17px 0 9px}.hero h1 .ace-a{color:#ff7185}.hero h1 .ace-c{color:#6db1ff}.hero h1 .ace-e{color:#56ddb1}.hero-desc{font-size:13px;color:#c2d0e4;line-height:1.8;max-width:510px;margin-bottom:22px}.hero-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;align-self:center;z-index:2}.hero-step{border:1px solid rgba(217,229,245,.19);background:rgba(255,255,255,.09);backdrop-filter:blur(8px);padding:16px 12px;border-radius:14px}.hero-step strong{display:block;color:#fff;font-size:27px;margin-bottom:8px}.hero-step label{font-size:12px;color:#e9f3ff;font-weight:680}.hero-step p{font-size:10px;line-height:1.8;color:#b5c8e1;margin:4px 0 0}.button-row{display:flex;gap:9px;align-items:center;flex-wrap:wrap}.overview-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:20px 0 32px}.stat{padding:18px 20px}.stat small{display:block;color:#8795a9;font-size:11px;margin-bottom:8px}.stat strong{font-size:24px;font-weight:780}.stat em{font-style:normal;font-size:11px;color:#7a8ca8;margin-left:4px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 15px}.section-heading h2{margin:0;font-size:18px;font-weight:780;letter-spacing:-.025em}.section-heading small{color:#93a1b3;font-size:11px}.stages-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-bottom:27px}.stage-card{padding:19px 19px 16px;display:flex;flex-direction:column;gap:12px}.stage-h{display:flex;align-items:center;justify-content:space-between}.stage-letter{font-size:39px;line-height:1;font-weight:830;letter-spacing:-.05em}.stage-letter.a{color:#e95069}.stage-letter.c{color:#2582eb}.stage-letter.e{color:#0ba879}.stage-stage{font-size:15px;font-weight:780}.stage-sub{font-size:11px;color:#8b98ab}.stage-card ul{list-style:none;padding:0;margin:3px 0 0}.stage-card li{padding:9px 0;border-top:1px solid #eff2f7;display:flex;justify-content:space-between;font-size:12px}.stage-card li span{color:#9faab8}.stage-card .go{margin-top:auto;color:#4c6b90;font-size:12px;display:flex;align-items:center;justify-content:space-between;padding-top:6px}.stage-card:hover{border-color:#cbdcf5;transform:translateY(-1px);transition:.2s}.map-preview{margin:12px 0 30px;padding:18px 20px;display:flex;align-items:center;gap:20px;cursor:pointer}.map-preview img{width:170px;border-radius:9px;border:1px solid #e4eaf4}.map-preview strong{display:block;font-size:13px}.map-preview p{margin:6px 0;color:#8999af;font-size:11px;line-height:1.7}.map-preview .map-arrow{margin-left:auto;color:#7d95b8;font-size:20px}.hint-panel{padding:22px 24px;background:#fff;border:1px solid #e7edf5;border-radius:17px;margin-top:18px;line-height:1.9}.hint-panel h3{font-size:14px;margin:0 0 9px}.hint-panel p{color:#71839b;font-size:12px;margin:0}.grid-two{display:grid;grid-template-columns:1.55fr 1fr;gap:18px}.surface{background:white;border:1px solid var(--border);border-radius:18px;padding:22px;box-shadow:var(--shadow)}.surface h3{margin:0;font-size:16px}.surface-label{font-size:11px;color:#94a1b1}.divider{border:0;border-top:1px solid #edf1f6;margin:18px 0}.tag{display:inline-flex;align-items:center;padding:6px 9px;border-radius:30px;background:#f0f5fd;color:#5276a1;font-size:11px;font-weight:670}.tag.a{color:#ca3e56;background:#ffeef2}.tag.c{color:#166dd5;background:#eaf3ff}.tag.e{color:#128863;background:#e7f8ef}.level-path{display:flex;align-items:center;gap:9px;margin:17px 0 24px;flex-wrap:wrap}.level-path button{border:1px solid #e6eaf2;color:#8c99ab;border-radius:30px;background:white;padding:8px 11px;font-size:10px}.level-path button.active{border-color:#b8d1f8;background:#eaf3ff;color:#2373d4;font-weight:750}.level-path button.done{border-color:#bee9d7;color:#1b9873}.level-arrow{color:#b9c4d4}.step-top{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:7px}.step-top h1{font-size:33px;margin:7px 0;letter-spacing:-.055em}.step-top p{color:#7b8a9f;font-size:13px;line-height:1.7;max-width:680px}.step-flag{width:67px;height:67px;background:#f0f5fc;border-radius:18px;display:grid;place-items:center;font-size:27px;font-weight:780;color:#6782b5}.step-flag.a{background:#fff0f2;color:#e94c66}.step-flag.c{background:#eaf3ff;color:#1b79e6}.step-flag.e{background:#e7f8f1;color:#16a478}.lesson-summary{display:flex;align-items:flex-start;gap:12px;padding:16px 19px;background:#f2f7ff;border:1px solid #e3edfe;border-radius:14px;color:#4f698c;line-height:1.75;margin-bottom:19px}.lesson-summary strong{color:#304c73}.lesson-summary .bulb{font-size:22px}.form-card{padding:26px}.action-header{display:flex;justify-content:space-between;gap:15px;align-items:flex-start;padding-bottom:17px;border-bottom:1px solid var(--border);margin-bottom:22px}.action-header h2{font-size:17px;margin:0 0 5px}.action-header p{font-size:11px;color:#94a1b4;margin:0;line-height:1.6}.action-list{display:flex;flex-direction:column;gap:18px}.action-field{display:grid;grid-template-columns:34px 1fr;gap:13px}.action-number{height:32px;width:32px;border-radius:50%;background:#eef4fc;color:#2975d6;display:grid;place-items:center;font-size:13px;font-weight:800;margin-top:3px}.step-red .action-number{background:#fff0f3;color:#df4460}.step-green .action-number{background:#ecf9f1;color:#119a70}.action-content label{display:flex;align-items:baseline;justify-content:space-between;gap:10px;font-size:13px;font-weight:750;margin:0 0 7px}.action-content label small{font-weight:480;color:#9ba8b8;font-size:10px}.field-tip{font-size:11px;color:#8291a6;line-height:1.6;margin:0 0 9px}.action-content textarea,.action-content input,.form-input{display:block;width:100%;border:1px solid #e4eaf3;border-radius:10px;background:#fafcff;padding:12px 12px;font-size:12px;line-height:1.75;resize:vertical;transition:.15s}.action-content textarea:focus,.action-content input:focus,.form-input:focus{background:#fff;border-color:#8fb9fa;box-shadow:0 0 0 3px #eaf3ff}.field-example{font-size:10px;color:#a0aec0;line-height:1.6;margin:7px 0 0}.micro-note{background:#f8fafc;border-radius:12px;padding:13px 15px;font-size:11px;color:#71849b;line-height:1.8}.step-actions{display:flex;justify-content:space-between;align-items:center;gap:10px;border-top:1px solid #eff2f7;margin-top:23px;padding-top:19px;flex-wrap:wrap}.time-pill{border:1px solid #e7edf4;background:#fff;border-radius:30px;font-size:11px;color:#6f84a3;padding:8px 11px;white-space:nowrap}.time-pill strong{color:#4373b4}.aside-stack{display:flex;flex-direction:column;gap:15px}.aside-stack .surface{padding:20px}.guide-points{padding:0;margin:12px 0;list-style:none}.guide-points li{padding:8px 0;border-bottom:1px solid #f0f3f8;font-size:12px;color:#5b6e85;line-height:1.7}.guide-points li:last-child{border:0}.quote-box{padding:18px;border-left:3px solid #8cb4f7;background:#f7faff;border-radius:0 12px 12px 0;font-size:12px;line-height:1.8;color:#49668c;margin-top:15px}.ai-result{background:#f8fbff;border:1px solid #e5effc;border-radius:13px;padding:15px;font-size:12px;color:#425b77;line-height:1.8;white-space:pre-wrap;max-height:380px;overflow:auto}.helper-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:13px}.helper-actions button{flex:1}.check-row{display:flex;align-items:center;gap:7px;color:#6e809a;font-size:11px;margin-top:10px}.check-row input{accent-color:#1c83e9}.action-done{color:#0f946b;font-weight:760}.minikpi{font-size:12px;color:#8b99aa}.rich-details{margin-top:16px;border:1px solid #e8eef7;border-radius:13px;overflow:hidden;background:white}.rich-details summary{list-style:none;cursor:pointer;padding:13px 15px;font-size:12px;color:#557397;font-weight:720}.rich-details summary:after{content:'⌄';float:right}.rich-details[open] summary{border-bottom:1px solid var(--border)}.rich-details>div{padding:15px}.rich-details .action-field{margin-bottom:14px}.rich-details textarea{width:100%;border:1px solid #e4ebf5;border-radius:10px;padding:11px;min-height:80px;font-size:12px;line-height:1.8}.doc-item{display:flex;gap:10px;align-items:center;border:1px solid #e9eef5;border-radius:12px;background:#fff;padding:12px 13px;margin:8px 0}.doc-ico{height:35px;width:35px;border-radius:10px;background:#eaf3ff;color:#3176c8;display:grid;place-items:center;flex:none}.doc-item .doc-text{flex:1;min-width:0}.doc-item strong{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:12px}.doc-item small{font-size:10px;color:#9aa9ba}.doc-action{font-size:11px;padding:6px 9px;border:1px solid #e6ecf4;background:#fff;border-radius:8px;color:#597394}.doc-action.danger{color:#c64d5a}.upload-zone{border:1.5px dashed #bcd2f4;border-radius:14px;background:#f8fbff;padding:25px;text-align:center;color:#6887ad;transition:.2s}.upload-zone.drag{border-color:#448ef4;background:#eaf3ff}.upload-zone strong{display:block;color:#446a9c;font-size:13px;margin:8px}.upload-zone p{font-size:11px;color:#9aadbe;margin:6px 0 0}.upload-zone svg{width:31px;height:31px;display:block;margin:auto}.model-display{padding:8px;border:1px solid #e6edf6;border-radius:15px;overflow:hidden;background:white}.model-display img{display:block;width:100%;border-radius:8px}.empty-state{border:1px dashed #d6e1f1;border-radius:14px;padding:28px;text-align:center;color:#8d9db3;font-size:12px;line-height:1.8;background:#fff}.export-row{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:19px 20px;border:1px solid var(--border);background:white;border-radius:14px;margin-bottom:11px}.export-icon{background:#eff5ff;color:#276fd0;border-radius:12px;width:40px;height:40px;display:grid;place-items:center;font-size:21px;flex:none}.export-info{flex:1}.export-info strong{display:block;font-size:14px}.export-info p{font-size:11px;color:#8d9cb0;line-height:1.7;margin:5px 0 0}.export-note{margin:20px 0 0;background:#f8fbff;border-radius:14px;padding:17px;color:#7285a0;font-size:12px;line-height:1.9}.pill-run{background:#eaf8f2;color:#0f946b;padding:5px 8px;border-radius:7px;font-size:10px;font-weight:700}.test-row{border:1px solid var(--border);padding:15px;border-radius:12px;margin:10px 0}.test-row header{display:flex;align-items:center;justify-content:space-between;gap:12px}.test-row label{font-size:10px;color:#8191a7}.test-row .text-preview{background:#f8fafc;border-radius:8px;padding:10px;white-space:pre-wrap;font-size:11px;line-height:1.7;color:#66798e;max-height:160px;overflow:auto;margin:7px 0}.test-status{font-size:10px;color:#b17c3d;font-weight:740}.test-status.passed{color:#079a71}.test-controls{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.mini-input{width:100%;border:1px solid #e0e7f0;border-radius:9px;padding:10px 11px;background:#fafdff;font-size:12px;line-height:1.7;min-height:55px;resize:vertical}.course-layout{display:grid;grid-template-columns:202px minmax(0,1fr);gap:19px}.course-toc{position:sticky;top:90px;align-self:start;max-height:calc(100vh - 112px);overflow:auto;padding:15px}.course-toc strong{display:block;font-size:13px;margin-bottom:12px}.course-toc a{display:block;padding:8px 5px;color:#78879e;font-size:11px;line-height:1.5;border-bottom:1px solid #f4f5f7}.course-toc a:hover{color:#146be1;text-decoration:none}.course-article{padding:25px 32px;line-height:1.9;overflow-wrap:anywhere;overflow:hidden}.course-article h1{font-size:24px;line-height:1.4;border-bottom:1px solid #e5edf8;padding:16px 0 9px}.course-article h2{font-size:18px;margin-top:35px;line-height:1.5;color:#1a3155}.course-article h3{font-size:15px;margin-top:24px}.course-article p,.course-article li{font-size:12px;color:#54677f}.course-article blockquote{margin:14px 0;border-left:3px solid #86b5ff;padding:8px 17px;background:#f7faff;color:#49678f}.course-article code{background:#eef4fc;padding:1px 4px;border-radius:4px;font-size:11px}.course-article pre{white-space:pre-wrap;background:#15223c;color:#d5e6ff;padding:18px;border-radius:10px;max-height:500px;overflow:auto}.course-article pre code{background:none;color:inherit}.course-article table{border-collapse:collapse;display:block;overflow-x:auto;max-width:100%;font-size:11px}.course-article th,.course-article td{border:1px solid #e1e9f2;padding:7px 10px;min-width:100px;text-align:left}.course-article th{background:#f3f7fc}.course-article img{max-width:100%}.search-input{border:1px solid #e3eaf4;border-radius:11px;background:white;padding:11px 13px;font-size:12px;width:100%}.overlay{position:fixed;inset:0;background:rgba(18,32,55,.36);backdrop-filter:blur(4px);z-index:100;display:grid;place-items:center;padding:20px}.modal{background:#fff;max-width:660px;width:100%;border-radius:22px;box-shadow:0 22px 90px rgba(15,35,70,.2);max-height:min(92vh,930px);overflow:auto}.modal-header{padding:23px 25px 14px;border-bottom:1px solid #edf1f8;display:flex;align-items:center;justify-content:space-between}.modal-header h3{font-size:19px;margin:0}.modal-body{padding:22px 25px}.modal-body label{display:block;margin:13px 0 7px;font-weight:680;font-size:12px}.modal-body p{font-size:12px;line-height:1.8;color:#71839b}.modal-foot{display:flex;gap:9px;justify-content:flex-end;border-top:1px solid var(--border);padding:18px 25px}.form-select{border:1px solid #e1e8f2;border-radius:10px;padding:12px 13px;background:white;font-size:12px;width:100%}.option-box{padding:14px;border-radius:12px;background:#f3f8ff;color:#537297;font-size:12px;line-height:1.9}.warn-box{padding:13px 15px;background:#fff8ea;color:#957443;border:1px solid #f4e6c6;border-radius:12px;font-size:11px;line-height:1.75}.secret-guide{display:flex;align-items:center;gap:8px}.toast-area{position:fixed;right:20px;bottom:24px;z-index:150;display:flex;flex-direction:column;gap:9px}.toast{background:#203653;color:#fff;border-radius:11px;padding:11px 14px;box-shadow:0 12px 35px rgba(13,24,44,.18);font-size:12px;max-width:380px;animation:toast-in .18s ease}@keyframes toast-in{from{transform:translateY(8px);opacity:0}}.toast.error{background:#bd4258}.toast.good{background:#187c62}.mobile-only{display:none}
@media(max-width:1420px){.shell{grid-template-columns:222px minmax(0,1fr) 300px}.sidebar{padding-left:11px;padding-right:11px}.content{padding-left:25px;padding-right:25px}.hero{padding:30px 28px}.hero-steps{gap:6px}.hero-step{padding:12px}.hero-step strong{font-size:23px}.form-card{padding:21px}.aside-stack .surface{padding:18px}}
@media(max-width:1190px){.shell{grid-template-columns:222px minmax(0,1fr)}.coach-panel{position:fixed;right:0;top:0;bottom:0;width:min(370px,100vw);box-shadow:-10px 0 40px rgba(17,40,78,.1);transform:translateX(101%);transition:transform .25s}.shell.show-coach .coach-panel{transform:translateX(0)}.content{max-width:1100px}}
@media(max-width:920px){.sidebar{position:fixed;transform:translateX(-101%);transition:transform .25s;box-shadow:0 12px 30px rgba(16,34,68,.1);width:250px}.shell.show-sidebar .sidebar{transform:translateX(0)}.shell{grid-template-columns:1fr}.mobile-only{display:grid}.content{padding:26px 19px 65px}.topbar{padding:0 18px}.overview-stats{grid-template-columns:repeat(2,1fr)}.hero{grid-template-columns:1fr}.hero-steps{max-width:550px}.grid-two{grid-template-columns:1fr}.stages-grid{grid-template-columns:1fr}.course-layout{grid-template-columns:1fr}.course-toc{position:relative;top:0;max-height:240px}.app-footer{padding:17px 20px}}
@media(max-width:580px){.page-title{font-size:27px}.hero{padding:28px 24px}.hero h1{font-size:31px}.hero-steps{grid-template-columns:repeat(3,1fr)}.hero-step{padding:10px 8px}.hero-step strong{font-size:20px}.hero-step label{font-size:10px}.hero-step p{font-size:9px}.topbar .top-export{display:none}.breadcrumb{font-size:11px}.status-pill{padding:8px}.status-pill .chev{display:none}.coach-toggle{padding:9px}.topbar-actions{gap:6px}.content{padding-left:14px;padding-right:14px}.form-card{padding:18px}.action-field{grid-template-columns:26px 1fr;gap:8px}.action-number{height:26px;width:26px}.hero-desc{font-size:12px}.step-top{gap:7px}.step-flag{display:none}.step-top h1{font-size:27px}.export-row{flex-wrap:wrap}.map-preview img{width:112px}.app-footer{flex-direction:column;text-align:center}.course-article{padding:18px}.overview-stats{gap:8px}.stat{padding:15px}.modal-body{padding:16px}.modal-foot{padding:15px}}
.assistant-bubble.md-body,.ai-result.md{white-space:normal}
.assistant-bubble.is-thinking,.ai-pending{white-space:normal}
.think-row{display:flex;align-items:center;gap:8px;min-height:26px}
.think-orb{width:8px;height:8px;border-radius:50%;background:#176dea;box-shadow:0 0 0 0 rgba(23,109,234,.45);animation:think-pulse 1.35s ease-out infinite;flex:none}
.assistant-bubble .think-label,.ai-pending .think-label{color:#4d6382;font-size:12.5px;font-weight:680;letter-spacing:.01em}
.think-dots{display:inline-flex;gap:4px;align-items:center;height:12px}
.think-dots i{width:4px;height:4px;border-radius:50%;background:#7f93ad;display:block;animation:think-bounce 1.05s infinite ease-in-out}
.think-dots i:nth-child(2){animation-delay:.16s}
.think-dots i:nth-child(3){animation-delay:.32s}
@keyframes think-pulse{70%{box-shadow:0 0 0 7px rgba(23,109,234,0)}100%{box-shadow:0 0 0 0 rgba(23,109,234,0)}}
@keyframes think-bounce{0%,80%,100%{transform:translateY(0);opacity:.35}40%{transform:translateY(-3px);opacity:1}}
.assistant-bubble .md :first-child,.ai-result.md :first-child{margin-top:0}
.assistant-bubble .md :last-child,.ai-result.md :last-child{margin-bottom:0}
.assistant-bubble .md p,.ai-result.md p{margin:0 0 8px}
.assistant-bubble .md h2,.assistant-bubble .md h3,.assistant-bubble .md h4,.ai-result.md h2,.ai-result.md h3,.ai-result.md h4{margin:10px 0 6px;font-size:13px;line-height:1.45;color:#243652;font-weight:750}
.assistant-bubble .md ul,.assistant-bubble .md ol,.ai-result.md ul,.ai-result.md ol{margin:4px 0 8px;padding-left:1.15em}
.assistant-bubble .md li,.ai-result.md li{margin:3px 0}
.assistant-bubble .md li::marker,.ai-result.md li::marker{color:#6d84a3}
.assistant-bubble .md strong,.ai-result.md strong{color:#1d3354;font-weight:720}
.assistant-bubble .md code,.ai-result.md code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11px;background:#e7eef8;border-radius:5px;padding:1px 4px}
.assistant-bubble .md pre,.ai-result.md pre{margin:8px 0;padding:10px;background:#eef3fa;border-radius:10px;overflow:auto;white-space:pre-wrap}
.assistant-bubble .md pre code,.ai-result.md pre code{background:transparent;padding:0}
.assistant-bubble .md blockquote,.ai-result.md blockquote{margin:6px 0 8px;padding:1px 0 1px 10px;border-left:3px solid #c5d4ea;color:#607089}
.assistant-bubble .md a{color:#176dea}
.md-sources{margin-top:8px;color:#8b9aaf;font-size:11px}
.ai-pending{padding:16px 18px}