:root{--bg: #f4f6fb;--card: #ffffff;--text: #0f172a;--muted: #64748b;--line: #e2e8f0;--blue: #2563eb;--blue-dark: #1d4ed8;--blue-soft: #eff6ff;--green: #059669;--green-soft: #ecfdf5;--red: #dc2626;--red-soft: #fef2f2;--amber: #d97706;--amber-soft: #fffbeb;--violet: #7c3aed;--violet-soft: #f5f3ff;--radius: 16px;--radius-sm: 10px;--shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 10px 30px rgba(15, 23, 42, .06);--shadow-lg: 0 24px 60px rgba(15, 23, 42, .16);--max: 1180px}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:radial-gradient(1200px 500px at 15% -10%,rgba(37,99,235,.08),transparent 60%),radial-gradient(900px 420px at 105% 5%,rgba(124,58,237,.06),transparent 55%),var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,sans-serif;font-size:15px;line-height:1.6;min-height:100vh}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit;color:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}h1,h2,h3,h4,p{margin:0}img{max-width:100%;display:block}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.muted{color:var(--muted)}.small{font-size:13px}.danger{color:var(--red)}.center-text{text-align:center}.eyebrow{display:block;color:var(--blue);font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;margin-bottom:6px}.fineprint{color:var(--muted);font-size:12px;margin-top:14px}.app-shell{min-height:100vh}.topbar{position:sticky;top:0;z-index:40;background:#ffffffdb;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.topbar-inner{max-width:var(--max);margin:0 auto;padding:0 22px;height:64px;display:flex;align-items:center;gap:28px}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.01em}.brand-mark{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:11px;background:linear-gradient(135deg,#3b82f6,#1d4ed8);color:#fff;font-weight:800;font-size:18px;box-shadow:0 8px 18px #2563eb47}.brand-mark.large{width:54px;height:54px;border-radius:16px;font-size:26px}.brand-text{display:flex;flex-direction:column;line-height:1.2;font-size:15px}.brand-text small{color:var(--muted);font-size:11px;font-weight:600;letter-spacing:.12em}.topnav{display:flex;gap:4px;margin-left:6px}.topnav-link{padding:8px 14px;border-radius:999px;color:var(--muted);font-weight:600;font-size:14px;transition:background .15s,color .15s}.topnav-link:hover{background:#f1f5f9;color:var(--text)}.topnav-link.active{background:var(--blue-soft);color:var(--blue)}.topbar-user{margin-left:auto;display:inline-flex;align-items:center;gap:9px;padding:5px 12px 5px 5px;border:1px solid var(--line);border-radius:999px;background:#fff;font-size:13px;font-weight:600}.topbar-name{max-width:130px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.avatar{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;background:linear-gradient(135deg,#dbeafe,#bfdbfe);color:var(--blue-dark);font-weight:800;font-size:13px}.avatar-lg{width:64px;height:64px;font-size:26px}.page{max-width:var(--max);margin:0 auto;padding:28px 22px 84px;animation:page-in .28s ease both}@keyframes page-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}.mobile-nav{display:none}.quiz-shell{min-height:100vh}.center-screen{min-height:70vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:var(--muted)}.loading-block{display:flex;align-items:center;gap:12px;justify-content:center;padding:70px 20px;color:var(--muted)}.spinner{width:22px;height:22px;border-radius:50%;border:2.5px solid #dbeafe;border-top-color:var(--blue);animation:spin .8s linear infinite;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.breadcrumb{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:13px;margin-bottom:16px}.breadcrumb a:hover{color:var(--blue)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:9px 16px;border-radius:11px;border:1px solid var(--line);background:#fff;color:var(--text);font-weight:600;font-size:14px;transition:border-color .15s,background .15s,transform .1s,box-shadow .15s;white-space:nowrap}.btn:hover:not(:disabled){border-color:#cbd5e1;background:#f8fafc}.btn:active:not(:disabled){transform:translateY(1px)}.btn:disabled{opacity:.5}.btn-primary{background:linear-gradient(135deg,#3b82f6,#2563eb);border-color:transparent;color:#fff;box-shadow:0 8px 18px #2563eb3d}.btn-primary:hover:not(:disabled){background:linear-gradient(135deg,#2563eb,#1d4ed8);border-color:transparent}.btn-ghost{background:transparent;border-color:transparent;color:var(--muted)}.btn-ghost:hover:not(:disabled){background:#f1f5f9;color:var(--text);border-color:transparent}.btn-sm{padding:6px 12px;font-size:13px;border-radius:9px}.btn-lg{padding:12px 24px;font-size:15px;border-radius:12px}.btn-block{width:100%}.btn-badge{display:inline-grid;place-items:center;min-width:20px;height:20px;padding:0 6px;border-radius:999px;background:#ffffff38;font-size:11px}.icon-btn{width:36px;height:36px;display:inline-grid;place-items:center;border-radius:10px;border:1px solid var(--line);background:#fff;font-size:18px;line-height:1}.icon-btn:hover{background:#f8fafc}.text-link{color:var(--blue);font-weight:600;font-size:13px}.text-link:hover{text-decoration:underline}.text-btn{border:0;background:none;color:var(--blue);font-weight:600;font-size:13px;padding:4px 0}.text-btn:hover{text-decoration:underline}.tag{display:inline-flex;align-items:center;padding:3px 9px;border-radius:999px;background:#f1f5f9;color:#475569;font-size:12px;font-weight:600}.stat-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px;margin:22px 0}.stat-grid.compact{grid-template-columns:repeat(6,minmax(0,1fr))}.stat-tile{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px 16px;display:flex;flex-direction:column;gap:2px;box-shadow:0 1px 2px #0f172a08}.stat-label{color:var(--muted);font-size:12px;font-weight:600}.stat-value{font-size:24px;line-height:1.25;font-weight:800;letter-spacing:-.02em}.stat-hint{color:var(--muted);font-size:11px}.tone-blue .stat-value{color:var(--blue)}.tone-green .stat-value{color:var(--green)}.tone-red .stat-value{color:var(--red)}.tone-amber .stat-value{color:var(--amber)}.tone-violet .stat-value{color:var(--violet)}.progress{height:7px;border-radius:999px;background:#eef2f7;overflow:hidden}.progress>span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,#60a5fa,#2563eb);transition:width .4s ease}.progress-green>span{background:linear-gradient(90deg,#34d399,#059669)}.progress-amber>span{background:linear-gradient(90deg,#fbbf24,#d97706)}.section-block{margin:34px 0}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:16px}.section-head h2{font-size:21px;letter-spacing:-.01em}.section-head p{margin-top:3px;font-size:13px}.empty-state{background:var(--card);border:1px dashed #cbd5e1;border-radius:var(--radius);padding:48px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:10px}.empty-mark{width:48px;height:48px;border-radius:50%;display:grid;place-items:center;background:var(--blue-soft);color:var(--blue);font-size:20px;font-weight:700}.empty-state h3{font-size:18px}.empty-state p{color:var(--muted);font-size:13px;max-width:440px}.error-box{display:flex;align-items:center;justify-content:space-between;gap:16px;background:var(--red-soft);border:1px solid #fecaca;color:var(--red);padding:16px 18px;border-radius:var(--radius-sm)}.error-text{color:var(--red)}.form-error{background:var(--red-soft);border:1px solid #fecaca;color:var(--red);border-radius:9px;padding:9px 12px;font-size:13px}.form-success{background:var(--green-soft);border:1px solid #a7f3d0;color:var(--green);border-radius:9px;padding:9px 12px;font-size:13px}.login-page{min-height:100vh;display:grid;grid-template-columns:1.05fr 1fr}.login-hero{background:radial-gradient(700px 420px at 20% 0%,rgba(96,165,250,.35),transparent 60%),radial-gradient(600px 500px at 90% 90%,rgba(124,58,237,.3),transparent 60%),linear-gradient(150deg,#0f2b62,#123c8f 55%,#0b2557);color:#fff;padding:64px clamp(28px,6vw,96px);display:flex;flex-direction:column;justify-content:center;gap:36px;position:relative;overflow:hidden}.login-hero:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);background-size:22px 22px;-webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.55),transparent 75%);mask-image:linear-gradient(to bottom,rgba(0,0,0,.55),transparent 75%);pointer-events:none}.login-brand{display:flex;align-items:center;gap:18px;position:relative;z-index:1}.login-brand h1{font-size:clamp(32px,4vw,46px);letter-spacing:-.02em;line-height:1.1}.login-brand p{color:#ffffffb3;font-size:14px;margin-top:6px}.login-features{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1}.login-features>div{flex:1;max-width:150px;padding:16px 18px;border:1px solid rgba(255,255,255,.16);background:#ffffff12;border-radius:14px;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);display:flex;flex-direction:column}.login-features strong{font-size:28px;font-weight:800;line-height:1.1}.login-features span{color:#ffffffa6;font-size:12px}.login-quote{color:#fff9;font-size:13px;position:relative;z-index:1}.login-panel{display:flex;align-items:center;justify-content:center;padding:40px 24px}.login-card{width:min(430px,100%);background:var(--card);border:1px solid var(--line);border-radius:22px;padding:30px;box-shadow:var(--shadow)}.login-card h2{margin-top:20px;font-size:24px;letter-spacing:-.01em}.login-card>.muted{font-size:13px;margin-top:4px}.segmented{display:grid;grid-template-columns:1fr 1fr;gap:4px;background:#f1f5f9;padding:4px;border-radius:12px}.segmented button{border:0;background:transparent;padding:9px;border-radius:9px;color:var(--muted);font-weight:700;font-size:14px}.segmented button.active{background:#fff;color:var(--text);box-shadow:0 2px 8px #0f172a14}.form{display:flex;flex-direction:column;gap:14px;margin-top:20px}.form.narrow{max-width:440px}.field{display:flex;flex-direction:column;gap:6px}.field>span{font-size:13px;font-weight:600;color:#334155}.field input,.field textarea,.note-panel textarea{width:100%;border:1px solid var(--line);border-radius:11px;padding:11px 13px;background:#fff;outline:none;transition:border-color .15s,box-shadow .15s}.field input:focus,.field textarea:focus,.note-panel textarea:focus{border-color:#93c5fd;box-shadow:0 0 0 4px #2563eb1a}.hero-card{background:radial-gradient(700px 300px at 100% 0%,rgba(37,99,235,.09),transparent 55%),var(--card);border:1px solid var(--line);border-radius:22px;padding:32px 34px;display:flex;align-items:center;justify-content:space-between;gap:30px;box-shadow:var(--shadow)}.hero-copy h1{font-size:clamp(28px,3.4vw,40px);letter-spacing:-.025em;line-height:1.15;margin-bottom:8px}.hero-copy .muted{max-width:620px;font-size:14px}.hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:20px}.hero-ring{width:160px;height:160px;flex:none;position:relative;display:grid;place-items:center}.hero-ring svg{width:160px;height:160px;transform:rotate(-90deg)}.hero-ring .ring-track,.score-ring .ring-track{fill:none;stroke:#e8eefb;stroke-width:10}.hero-ring .ring-value,.score-ring .ring-value{fill:none;stroke:var(--blue);stroke-width:10;stroke-linecap:round;transition:stroke-dasharray .6s ease}.ring-label{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px}.ring-label strong{font-size:28px;letter-spacing:-.02em}.ring-label span{color:var(--muted);font-size:11px}.resume-card{margin-top:16px;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:17px 22px;border:1px solid #bfdbfe;background:linear-gradient(135deg,#f0f7ff,#fff);border-radius:var(--radius);transition:transform .15s,box-shadow .15s}.resume-card:hover{transform:translateY(-1px);box-shadow:var(--shadow)}.resume-card>div{display:flex;flex-direction:column;gap:2px}.resume-card .eyebrow{margin:0}.resume-arrow{color:var(--blue);font-weight:700;font-size:14px}.chapter-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(268px,1fr));gap:14px}.chapter-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;display:flex;flex-direction:column;gap:13px;box-shadow:0 1px 2px #0f172a08;transition:transform .15s,box-shadow .15s,border-color .15s}.chapter-card:hover{transform:translateY(-2px);border-color:#bfdbfe;box-shadow:var(--shadow)}.chapter-top{display:flex;align-items:center;gap:12px}.chapter-num{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:var(--blue-soft);color:var(--blue);font-weight:800;font-size:15px;flex:none}.chapter-top h3{font-size:17px;letter-spacing:-.01em;line-height:1.3}.chapter-arrow{margin-left:auto;color:#94a3b8;font-size:18px;transition:transform .15s,color .15s}.chapter-card:hover .chapter-arrow,.shitu-card:hover .chapter-arrow{transform:translate(3px);color:var(--blue)}.chapter-meta{display:flex;flex-wrap:wrap;gap:10px;font-size:12px;color:var(--muted)}.chapter-meta .danger{margin-left:auto}.shitu-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(268px,1fr));gap:14px}.shitu-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:15px;display:flex;align-items:center;gap:13px;transition:transform .15s,box-shadow .15s,border-color .15s}.shitu-card:hover{transform:translateY(-2px);border-color:#c4b5fd;box-shadow:var(--shadow)}.shitu-art{width:52px;height:52px;border-radius:13px;background:linear-gradient(135deg,#7c3aed1f,#2563eb1f),#f8faff;color:var(--violet);display:grid;place-items:center;font-weight:800;font-size:15px;flex:none;border:1px solid #ede9fe}.shitu-card h3{font-size:15px;line-height:1.35}.chapter-hero{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;padding:6px 0 4px}.chapter-hero h1{font-size:clamp(30px,3.6vw,42px);letter-spacing:-.025em;line-height:1.15}.chapter-hero-actions{display:flex;gap:10px;flex-wrap:wrap}.setup-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:var(--shadow);margin:22px 0 30px}.setup-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:8px}.setup-head h2{font-size:20px}.setup-head p{font-size:13px;margin-top:2px}.match-badge{background:var(--blue-soft);color:var(--blue);border-radius:999px;padding:6px 12px;font-size:12px;font-weight:700;white-space:nowrap}.filter-row{display:grid;grid-template-columns:76px minmax(0,1fr);gap:14px;align-items:start;padding:12px 0;border-bottom:1px dashed #edf1f6}.filter-row:last-of-type{border-bottom:0}.filter-label{color:var(--muted);font-size:13px;font-weight:600;padding-top:7px}.pill-row{display:flex;flex-wrap:wrap;gap:7px}.pill-row.scroll-x{flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px;scrollbar-width:thin}.pill{border:1px solid var(--line);background:#fff;color:#475569;border-radius:999px;padding:6px 13px;font-size:13px;font-weight:600;white-space:nowrap;display:inline-flex;align-items:center;gap:5px;transition:background .15s,border-color .15s,color .15s}.pill:hover{border-color:#cbd5e1;background:#f8fafc}.pill small{color:#94a3b8;font-size:11px;font-weight:600}.pill.active{background:var(--blue);border-color:var(--blue);color:#fff;box-shadow:0 4px 10px #2563eb38}.pill.active small{color:#ffffffbf}.mode-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.mode-card{text-align:left;border:1px solid var(--line);background:#fff;border-radius:11px;padding:10px 12px;display:flex;flex-direction:column;gap:2px;transition:border-color .15s,background .15s}.mode-card strong{font-size:13px}.mode-card span{color:var(--muted);font-size:11px;line-height:1.4}.mode-card:hover{border-color:#cbd5e1}.mode-card.active{border-color:#93c5fd;background:var(--blue-soft)}.mode-card.active strong{color:var(--blue-dark)}.setup-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding-top:18px;border-top:1px solid var(--line);margin-top:8px}.setup-actions .muted{margin-left:auto}.section-list{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.section-row{display:flex;align-items:center;gap:18px;padding:14px 18px;border-bottom:1px solid #f1f5f9}.section-row:last-child{border-bottom:0}.section-row-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:5px}.section-row-main strong{font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.section-row-main .muted{font-size:12px}.section-row-main .progress{max-width:320px;height:5px}.quiz-page{min-height:100vh;padding-bottom:120px;background:radial-gradient(900px 400px at 50% -20%,rgba(37,99,235,.07),transparent 65%),var(--bg)}.quiz-topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:14px;padding:12px clamp(14px,4vw,40px);background:#ffffffe6;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.quiz-title{display:flex;flex-direction:column;gap:1px;min-width:0;flex:1}.quiz-title strong{font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.quiz-title .muted{font-weight:400}.quiz-progress{height:3px;background:#e8edf6;position:sticky;top:61px;z-index:29}.quiz-progress>span{display:block;height:100%;background:linear-gradient(90deg,#60a5fa,#2563eb);transition:width .3s ease}.quiz-body{max-width:820px;margin:0 auto;padding:26px 18px 10px}.shared-box{background:#f8faff;border:1px solid #dbeafe;border-radius:14px;padding:14px 16px;margin-bottom:14px;position:relative}.shared-label{display:inline-block;background:var(--blue);color:#fff;font-size:11px;font-weight:700;padding:2px 8px;border-radius:999px;margin-bottom:6px}.shared-box p{font-size:14px;line-height:1.7}.shared-box .muted{display:block;margin-top:6px;font-size:12px}.shared-tip{display:flex;align-items:center;gap:10px;margin-bottom:12px}.shared-tip .shared-label{margin:0;background:var(--violet)}.question-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:26px;box-shadow:var(--shadow)}.question-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:12px}.type-badge{display:inline-flex;align-items:center;padding:3px 9px;border-radius:7px;background:#f1f5f9;color:#475569;font-size:11px;font-weight:700;letter-spacing:.02em;white-space:nowrap}.type-X{background:#fef3c7;color:#b45309}.type-A3{background:#ede9fe;color:#6d28d9}.type-B1{background:#e0f2fe;color:#0369a1}.type-判断题{background:#dcfce7;color:#15803d}.stem{font-size:clamp(17px,2.2vw,20px);line-height:1.65;font-weight:700;letter-spacing:-.005em;margin-bottom:20px}.options{display:flex;flex-direction:column;gap:10px}.option{display:flex;align-items:flex-start;gap:12px;text-align:left;width:100%;padding:13px 15px;border:1px solid var(--line);border-radius:13px;background:#fff;transition:border-color .15s,background .15s,transform .1s}.option:hover:not(:disabled){border-color:#93c5fd;background:#f8fbff}.option:active:not(:disabled){transform:scale(.995)}.option-key{width:26px;height:26px;border-radius:8px;display:grid;place-items:center;background:#f1f5f9;color:#475569;font-weight:800;font-size:12px;flex:none}.option-text{flex:1;line-height:1.6;font-size:14px;padding-top:2px}.option-mark{margin-left:auto;font-weight:800;font-size:15px;padding-top:2px}.option-selected{border-color:var(--blue);background:var(--blue-soft)}.option-selected .option-key{background:var(--blue);color:#fff}.option-correct{border-color:#6ee7b7;background:var(--green-soft)}.option-correct .option-key{background:var(--green);color:#fff}.option-correct .option-mark{color:var(--green)}.option-wrong{border-color:#fca5a5;background:var(--red-soft)}.option-wrong .option-key{background:var(--red);color:#fff}.option-wrong .option-mark{color:var(--red)}.option:disabled{opacity:1}.inspect-confirm{margin-top:16px;width:100%}.feedback{margin-top:20px;border-radius:14px;padding:15px 17px;display:flex;flex-direction:column;gap:5px;border:1px solid}.feedback-correct{background:var(--green-soft);border-color:#a7f3d0}.feedback-correct strong{color:var(--green)}.feedback-wrong{background:var(--red-soft);border-color:#fecaca}.feedback-wrong strong{color:var(--red)}.feedback-recite{background:var(--blue-soft);border-color:#bfdbfe}.feedback-recite strong{color:var(--blue-dark)}.feedback p{font-size:13px;color:#334155}.feedback p.wrong-record-note{margin-top:2px;font-size:12px;color:var(--red);opacity:.9}.knowledge{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.note-panel{margin-top:16px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px}.note-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.note-panel textarea{resize:vertical;min-height:96px}.note-actions{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:10px}.quiz-actions{position:fixed;bottom:0;left:0;right:0;z-index:32;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px clamp(14px,4vw,40px);background:#fffffff0;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-top:1px solid var(--line);padding-bottom:calc(12px + env(safe-area-inset-bottom))}.action-group{display:flex;gap:6px}.icon-action{display:flex;flex-direction:column;align-items:center;gap:0;border:0;background:transparent;color:#64748b;font-size:17px;line-height:1.2;padding:4px 9px;border-radius:9px}.icon-action span{font-size:10px;font-weight:600}.icon-action:hover{background:#f1f5f9}.icon-action.active{color:var(--amber)}.icon-action.active-chop{color:var(--violet)}.action-nav{display:flex;gap:8px}.toast{position:fixed;left:50%;bottom:96px;transform:translate(-50%);z-index:60;background:#0f172ae6;color:#fff;padding:9px 16px;border-radius:999px;font-size:13px;box-shadow:var(--shadow-lg);animation:toast-in .2s ease both}@keyframes toast-in{0%{opacity:0;transform:translate(-50%,6px)}}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:70;background:#0f172a6b;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);display:grid;place-items:center;padding:20px;animation:fade-in .15s ease both}@keyframes fade-in{0%{opacity:0}}.modal{background:#fff;border-radius:20px;padding:26px;width:min(440px,100%);box-shadow:var(--shadow-lg);animation:pop-in .18s ease both}@keyframes pop-in{0%{opacity:0;transform:translateY(8px) scale(.99)}}.modal h2{font-size:20px;margin-bottom:6px}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:22px}.card-modal{width:min(560px,100%)}.modal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.card-legend{display:flex;gap:16px;margin-bottom:14px;font-size:12px;color:var(--muted)}.card-legend span{display:inline-flex;align-items:center;gap:6px}.dot{width:9px;height:9px;border-radius:50%;display:inline-block}.dot-blue{background:var(--blue)}.dot-green{background:var(--green)}.dot-red{background:var(--red)}.dot-gray{background:#e2e8f0}.answer-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(44px,1fr));gap:8px;max-height:48vh;overflow-y:auto;padding:2px}.answer-cell{height:42px;border-radius:10px;border:1px solid var(--line);background:#f8fafc;color:#475569;font-weight:700;font-size:13px}.answer-cell:hover{border-color:#cbd5e1}.cell-blue{background:var(--blue-soft);border-color:#bfdbfe;color:var(--blue-dark)}.cell-green{background:var(--green-soft);border-color:#a7f3d0;color:var(--green)}.cell-red{background:var(--red-soft);border-color:#fecaca;color:var(--red)}.cell-gray{background:#f8fafc}.answer-cell.current{outline:2px solid var(--blue);outline-offset:2px}.modal-foot{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:16px}.result-hero{display:flex;align-items:center;gap:clamp(24px,4vw,54px);background:var(--card);border:1px solid var(--line);border-radius:22px;padding:30px 34px;box-shadow:var(--shadow)}.result-hero.result-test{background:radial-gradient(600px 260px at 0% 0%,rgba(37,99,235,.08),transparent 60%),var(--card)}.result-hero.result-practice{background:radial-gradient(600px 260px at 0% 0%,rgba(5,150,105,.07),transparent 60%),var(--card)}.result-hero.result-practice .score-ring .ring-value{stroke:var(--green)}.score-ring{width:168px;height:168px;flex:none;position:relative;display:grid;place-items:center}.score-ring svg{width:168px;height:168px;transform:rotate(-90deg)}.score-ring .ring-track,.score-ring .ring-value{stroke-width:11}.score-label{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center}.score-label strong{font-size:36px;letter-spacing:-.03em;line-height:1.1}.score-label span{color:var(--muted);font-size:12px}.result-copy{flex:1;min-width:0}.result-copy h1{font-size:clamp(26px,3vw,36px);letter-spacing:-.025em;line-height:1.15;margin-bottom:6px}.result-meta{display:flex;flex-wrap:wrap;gap:14px;color:var(--muted);font-size:12px;margin-top:10px}.review-list{display:flex;flex-direction:column;gap:14px}.review-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px}.review-head{display:flex;align-items:center;gap:10px;margin-bottom:8px}.review-index{color:#94a3b8;font-size:12px;font-weight:700}.review-status{margin-left:auto;font-size:12px;font-weight:700;padding:2px 9px;border-radius:999px}.status-green{background:var(--green-soft);color:var(--green)}.status-red{background:var(--red-soft);color:var(--red)}.status-gray{background:#f1f5f9;color:var(--muted)}.review-stem{font-weight:700;line-height:1.65;margin-bottom:10px}.review-shared{color:var(--muted);font-size:13px;background:#f8fafc;border-radius:9px;padding:8px 10px;margin-bottom:10px}.review-options{display:flex;flex-direction:column;gap:6px}.review-option{display:flex;align-items:flex-start;gap:10px;padding:8px 11px;border-radius:9px;border:1px solid #f1f5f9;font-size:13px;line-height:1.55}.review-option .option-key{width:22px;height:22px;font-size:11px;border-radius:6px}.review-option.is-answer{background:var(--green-soft);border-color:#a7f3d0}.review-option.is-answer .option-key{background:var(--green);color:#fff}.review-option.is-wrong{background:var(--red-soft);border-color:#fecaca}.review-option.is-wrong .option-key{background:var(--red);color:#fff}.review-option.is-answer .option-mark{color:var(--green)}.review-option.is-wrong .option-mark{color:var(--red)}.review-foot{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:10px;font-size:12px;color:var(--muted)}.review-foot strong{color:var(--text)}.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:22px;margin-bottom:18px}.page-head h1{font-size:clamp(28px,3.4vw,38px);letter-spacing:-.025em;line-height:1.15}.page-head .muted{font-size:13px;margin-top:3px}.wrong-page .filter-row{background:var(--card);border:1px solid var(--line);border-radius:13px;padding:12px 16px;margin-bottom:10px}.wrong-list{display:flex;flex-direction:column;gap:12px;margin-top:16px}.wrong-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.wrong-main{padding:18px 20px}.wrong-count{margin-left:auto;color:var(--red);background:var(--red-soft);border-radius:999px;padding:2px 9px;font-size:11px;font-weight:700}.wrong-stem{font-weight:700;line-height:1.65}.wrong-foot{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:8px}.wrong-detail{border-top:1px solid #f1f5f9;padding:14px 20px 18px;background:#fbfcfe}.profile-card{display:flex;align-items:center;gap:18px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.profile-copy{flex:1;min-width:0}.profile-copy h1{font-size:26px;letter-spacing:-.02em}.profile-copy .muted{font-size:12px}.profile-actions{display:flex;gap:9px;flex-wrap:wrap}.chapter-stats{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:8px 20px}.chapter-stat-row{display:grid;grid-template-columns:180px minmax(0,1fr) 150px;align-items:center;gap:20px;padding:14px 0;border-bottom:1px solid #f1f5f9}.chapter-stat-row:last-child{border-bottom:0}.chapter-stat-name{display:flex;flex-direction:column;gap:1px}.chapter-stat-name strong{font-size:14px}.chapter-stat-extra{display:flex;align-items:center;justify-content:flex-end;gap:12px;font-size:12px}.session-list{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.session-row{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 18px;border-bottom:1px solid #f1f5f9;transition:background .15s}.session-row:last-child{border-bottom:0}.session-row:hover{background:#f8fafc}.session-row>div{display:flex;flex-direction:column;gap:1px;min-width:0}.session-row strong{font-size:14px}.session-score{font-weight:800;font-size:16px;color:var(--muted);flex:none}.session-score.good{color:var(--green)}.password-block .form{margin-top:0;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px}.shitu-hero{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:26px 30px;box-shadow:var(--shadow)}.shitu-hero h1{font-size:clamp(28px,3.4vw,38px);letter-spacing:-.025em;line-height:1.15}.shitu-hero .muted{max-width:620px;font-size:13px;margin-top:4px}.shitu-summary{text-align:right;flex:none;display:flex;flex-direction:column;gap:1px}.shitu-summary strong{font-size:26px;letter-spacing:-.02em;color:var(--green)}.shitu-summary span{color:var(--muted);font-size:11px}.shitu-toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px 2px}.shitu-progress{flex:1;max-width:360px;display:flex;flex-direction:column;gap:5px}.toolbar-actions{display:flex;gap:8px;flex-wrap:wrap}.shitu-images{display:flex;flex-direction:column;gap:20px}.shitu-card-block{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:0 1px 2px #0f172a08}.shitu-image-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:14px}.shitu-image-head>div{display:flex;align-items:baseline;gap:10px}.shitu-image-head strong{font-size:15px}.shitu-badge{background:#f1f5f9;color:var(--muted);border-radius:999px;padding:3px 10px;font-size:11px;font-weight:700}.shitu-badge.done{background:var(--green-soft);color:var(--green)}.shitu-image-wrap{background:linear-gradient(45deg,#fbfcfe 25%,transparent 25%,transparent 75%,#fbfcfe 75%),linear-gradient(45deg,#fbfcfe 25%,#fff 25%,#fff 75%,#fbfcfe 75%);background-size:18px 18px;background-position:0 0,9px 9px;border:1px solid #eef2f7;border-radius:14px;padding:12px;display:flex;justify-content:center}.shitu-image-wrap img{width:min(100%,480px);height:auto;border-radius:8px}.blank-list{display:flex;flex-direction:column;gap:8px;margin-top:16px}.blank-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:7px 10px;border-radius:10px;border:1px solid transparent}.blank-row:hover{background:#f8fafc}.blank-correct{background:#f7fdfa;border-color:#d1fae5}.blank-wrong{background:snow;border-color:#fee2e2}.blank-no{width:28px;height:28px;flex:none;display:grid;place-items:center;border-radius:8px;background:var(--blue-soft);color:var(--blue);font-weight:800;font-size:12px}.blank-input{flex:1;min-width:180px}.blank-input input{width:100%;border:1px solid var(--line);border-radius:9px;padding:8px 11px;background:#fff;outline:none;font-size:14px;transition:border-color .15s,box-shadow .15s}.blank-input input:focus{border-color:#93c5fd;box-shadow:0 0 0 3px #2563eb1a}.blank-input input.input-correct{border-color:#6ee7b7;background:#f7fdfa}.blank-input input.input-wrong{border-color:#fca5a5;background:snow}.blank-mark{font-weight:800;font-size:15px;width:20px;text-align:center;flex:none}.blank-mark.correct{color:var(--green)}.blank-mark.wrong{color:var(--red)}.blank-answer{color:var(--green);font-size:12px;font-weight:600;background:var(--green-soft);border-radius:7px;padding:3px 8px}.shitu-image-actions{display:flex;gap:8px;margin-top:14px}.chapter-pager{display:flex;justify-content:space-between;gap:12px;margin-top:26px}@media (max-width: 980px){.login-page{grid-template-columns:1fr}.login-hero{padding:38px 28px;gap:22px}.login-quote{display:none}.login-panel{padding:28px 20px 48px}.stat-grid,.stat-grid.compact{grid-template-columns:repeat(3,minmax(0,1fr))}.mode-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-card{flex-direction:column;align-items:flex-start}.hero-ring{align-self:center}.chapter-stat-row{grid-template-columns:150px minmax(0,1fr)}.chapter-stat-extra{grid-column:2;justify-content:flex-start}.profile-card{flex-wrap:wrap}.profile-actions{width:100%}}@media (max-width: 720px){body{font-size:14px}.topbar-inner{height:58px;padding:0 14px;gap:12px}.topnav,.topbar-name{display:none}.topbar-user{padding:4px;border:0;background:none}.page{padding:18px 14px 90px}.mobile-nav{position:fixed;left:0;right:0;bottom:0;z-index:45;display:grid;grid-template-columns:repeat(3,1fr);background:#fffffff2;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}.mobile-nav-link{display:flex;flex-direction:column;align-items:center;gap:1px;padding:8px 0 7px;color:var(--muted);font-size:10px;font-weight:600}.mobile-nav-link span{font-size:18px;line-height:1.1}.mobile-nav-link.active{color:var(--blue)}.hero-card{padding:22px;border-radius:18px}.hero-ring{width:138px;height:138px}.hero-ring svg{width:138px;height:138px}.stat-grid,.stat-grid.compact{grid-template-columns:repeat(2,minmax(0,1fr))}.stat-value{font-size:21px}.chapter-grid,.shitu-grid{grid-template-columns:1fr}.section-head{align-items:flex-start;flex-direction:column;gap:8px}.chapter-hero,.shitu-hero,.page-head{align-items:flex-start;flex-direction:column;gap:14px}.chapter-hero-actions{width:100%}.chapter-hero-actions .btn{flex:1}.setup-card{padding:18px}.setup-head{flex-direction:column;gap:8px}.filter-row{grid-template-columns:1fr;gap:7px;padding:10px 0}.filter-label{padding-top:0;font-size:12px}.mode-grid{grid-template-columns:1fr 1fr}.mode-card{padding:9px 10px}.mode-card span{display:none}.setup-actions{align-items:stretch;flex-direction:column}.setup-actions .muted{margin:0}.section-row{align-items:flex-start;flex-direction:column;gap:8px}.section-row .btn{align-self:flex-end}.quiz-topbar{padding:10px 12px;gap:10px}.quiz-title strong{font-size:13px}.quiz-body{padding:16px 12px 8px}.question-card{padding:18px 15px;border-radius:16px}.option{padding:12px}.option-text{font-size:14px}.quiz-actions{padding:9px 10px calc(9px + env(safe-area-inset-bottom))}.icon-action{font-size:16px;padding:4px 5px}.action-nav .btn{padding:8px 11px;font-size:13px}.result-hero{flex-direction:column;align-items:flex-start;padding:22px}.score-ring{align-self:center}.review-card{padding:16px}.chapter-stat-row{grid-template-columns:1fr;gap:7px}.chapter-stat-extra{grid-column:1;justify-content:flex-start}.profile-card{padding:18px}.profile-actions .btn{flex:1}.shitu-hero{padding:20px}.shitu-toolbar{align-items:stretch;flex-direction:column}.shitu-progress{max-width:none}.shitu-card-block{padding:14px}.shitu-image-head{align-items:flex-start;flex-direction:column;gap:6px}.shitu-image-wrap{padding:6px}.blank-row{gap:8px}.blank-input{min-width:140px}.blank-answer{width:100%;margin-left:38px}.chapter-pager .btn{font-size:12px;padding:7px 10px}.modal{padding:20px}}@media (max-width: 400px){.mode-grid{grid-template-columns:1fr}.action-group .icon-action span,.quiz-title .muted.small{display:none}}.feedback-ai{display:flex;justify-content:flex-end;margin-top:12px}.ai-trigger-wrap{display:inline-flex}.ai-trigger{display:inline-flex;align-items:center;gap:7px;border:1px solid #c7d2fe;background:linear-gradient(135deg,#eef2ff,#f5f3ff);color:#4338ca;border-radius:999px;padding:8px 14px;font-size:13px;font-weight:700;cursor:pointer;transition:transform .15s,box-shadow .15s,border-color .15s}.ai-trigger:hover{transform:translateY(-1px);border-color:#a5b4fc;box-shadow:0 5px 16px #4f46e529}.ai-spark{font-size:14px;color:#7c3aed}.ai-trigger-count{font-size:11px;font-weight:600;color:#6366f1;background:#ffffffb8;border-radius:999px;padding:1px 7px}.ai-trigger-compact .ai-trigger{padding:6px 12px;font-size:12px}.ai-backdrop{z-index:80}.ai-modal{width:min(680px,100%);max-height:min(88vh,780px);display:flex;flex-direction:column;gap:10px;background:#fff;border-radius:20px;padding:20px;box-shadow:var(--shadow-lg);animation:pop-in .18s ease both}.ai-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.ai-head strong{font-size:17px}.ai-quota-line{display:flex;align-items:center;flex-wrap:wrap;gap:6px 16px;padding:8px 11px;border-radius:10px;background:#f8fafc;border:1px solid #eef2f7;font-size:12px;color:#475569}.ai-quota-line .text-btn{margin-left:auto;font-size:12px}.ai-chat{flex:1;min-height:200px;overflow-y:auto;display:flex;flex-direction:column;gap:12px;padding:14px;border-radius:14px;background:#f8fafc;border:1px solid #eef2f7;overscroll-behavior:contain}.ai-msg{display:flex;flex-direction:column;gap:4px;max-width:88%}.ai-msg p{margin:0;white-space:pre-wrap;word-break:break-word;line-height:1.75;font-size:13.5px}.ai-msg-assistant{align-self:flex-start}.ai-msg-assistant p{background:#fff;border:1px solid #e2e8f0;border-radius:4px 14px 14px;padding:11px 13px;color:#1e293b}.ai-msg-user{align-self:flex-end}.ai-msg-user p{background:var(--blue);color:#fff;border-radius:14px 4px 14px 14px;padding:10px 13px}.ai-msg-label{font-size:11px;font-weight:800;color:#7c3aed;letter-spacing:.04em}.ai-msg-loading p{color:var(--muted)}.ai-msg-loading p:after{content:" ···";animation:ai-dots 1.2s steps(4,end) infinite}@keyframes ai-dots{0%{opacity:.25}50%{opacity:1}to{opacity:.25}}.ai-empty,.ai-error,.ai-exhausted{align-self:center;width:100%;max-width:560px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:9px;padding:18px 14px;color:#475569;font-size:13px}.ai-error{color:var(--red)}.ai-error p,.ai-exhausted p{margin:0;line-height:1.7}.ai-exhausted{text-align:left;align-items:stretch;background:#fff7ed;border:1px solid #fed7aa;border-radius:12px;color:#7c2d12}.ai-exhausted strong{font-size:14px}.ai-notice{align-self:center;font-size:12px;color:#0f766e;background:#ecfdf5;border:1px solid #a7f3d0;border-radius:999px;padding:4px 12px}.ai-redeem{display:flex;flex-direction:column;gap:6px;margin-top:4px}.ai-redeem label{font-size:12px;font-weight:700}.ai-redeem-row{display:flex;gap:8px}.ai-redeem-row input{flex:1;min-width:0;border:1px solid #cbd5e1;border-radius:9px;padding:8px 10px;font:inherit;font-size:13px;text-transform:uppercase;letter-spacing:.03em;background:#fff}.ai-redeem-row input:focus{outline:2px solid #bfdbfe;border-color:#60a5fa}.ai-redeem-inline{padding:10px 12px;border-radius:12px;background:#faf5ff;border:1px solid #e9d5ff}.ai-redeem-inline .form-error,.ai-exhausted .form-error{margin:0;font-size:12px}.ai-composer{display:flex;gap:9px;align-items:flex-end}.ai-composer textarea{flex:1;min-width:0;resize:vertical;min-height:54px;max-height:140px;border:1px solid #cbd5e1;border-radius:12px;padding:10px 12px;font:inherit;font-size:13px;line-height:1.6;background:#fff}.ai-composer textarea:focus{outline:2px solid #bfdbfe;border-color:#60a5fa}.ai-composer textarea:disabled{background:#f8fafc;color:#94a3b8}.ai-foot{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;font-size:11px;color:#64748b}.review-ai{margin-top:12px;padding-top:12px;border-top:1px dashed #e2e8f0;display:flex;justify-content:flex-end}@media (max-width: 720px){.ai-modal{padding:15px;max-height:92vh}.ai-chat{padding:10px}.ai-msg{max-width:96%}.ai-quota-line .text-btn{margin-left:0}.ai-composer{flex-direction:column;align-items:stretch}.ai-composer .btn{width:100%}.ai-redeem-row{flex-direction:column}}.topbar-tools{margin-left:auto;display:flex;align-items:center;gap:6px}.topbar-tool{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 12px;font-size:13px;font-weight:600;color:var(--muted);line-height:1;transition:background .15s,color .15s}.topbar-tool:hover{background:#f8fafc;color:var(--text)}.topbar-bell{position:relative;padding:7px 10px;font-size:15px}.bell-dot{position:absolute;top:4px;right:4px;width:8px;height:8px;border-radius:50%;background:var(--red);border:1.5px solid #fff}.topbar-tools .topbar-user{margin-left:0}.mobile-nav .mobile-nav-link{border:0;background:none;font-family:inherit;cursor:pointer}.mobile-bell{position:relative;display:inline-block}.subjects-hero{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;padding:4px 2px;margin-bottom:20px}.subjects-hero h1{font-size:clamp(26px,3vw,36px);letter-spacing:-.02em;margin-bottom:6px}.subjects-hero .muted{max-width:660px;font-size:14px}.subjects-hero-actions{display:flex;gap:8px;flex-wrap:wrap}.subject-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.subject-card{font:inherit;text-align:left;border:1px solid var(--line);background:var(--card);border-radius:18px;padding:20px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:8px;min-height:178px;transition:transform .15s,border-color .15s,box-shadow .15s}button.subject-card:hover{transform:translateY(-2px);border-color:#bfdbfe;box-shadow:0 12px 30px #2563eb1a}.subject-card-top{display:flex;align-items:center;justify-content:space-between;gap:10px}.subject-mark{flex:none;width:42px;height:42px;border-radius:12px;display:inline-grid;place-items:center;font-weight:800;font-size:19px;color:#fff;background:linear-gradient(135deg,#3b82f6,#1d4ed8)}.subject-marx .subject-mark,.mark-marx{background:linear-gradient(135deg,#f59e0b,#b45309)}.subject-tcm .subject-mark,.mark-tcm{background:linear-gradient(135deg,#10b981,#047857)}.subject-card h2{font-size:19px;letter-spacing:-.01em}.subject-card p{font-size:13px;flex:1}.subject-badge{font-size:11px;font-weight:800;padding:4px 9px;border-radius:999px;letter-spacing:.02em;white-space:nowrap}.subject-badge.ok{background:var(--green-soft);color:var(--green)}.subject-badge.lock{background:var(--amber-soft);color:var(--amber)}.subject-badge.soon{background:#f1f5f9;color:var(--muted)}.subject-enter{font-size:13px;font-weight:700;color:var(--blue)}.subject-locked .subject-enter{color:var(--amber)}.subject-soon{background:#f8fafc;border-style:dashed;box-shadow:none;opacity:.75;cursor:not-allowed}.subject-soon .subject-mark{background:linear-gradient(135deg,#cbd5e1,#94a3b8)}.subject-soon .subject-enter{color:var(--muted);font-weight:600}.invite-banner{margin-top:20px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;border:1px solid #bfdbfe;background:linear-gradient(135deg,#eff6ff,#f5f3ff);border-radius:18px;padding:20px 22px}.invite-banner h2{font-size:19px;margin-bottom:4px}.invite-code-box{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid #dbeafe;border-radius:12px;padding:8px 10px 8px 14px}.invite-code-box code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:18px;font-weight:800;letter-spacing:.16em;color:var(--blue-dark)}.lock-hero{display:flex;align-items:center;gap:18px;border:1px solid var(--line);background:var(--card);border-radius:22px;padding:26px 28px;box-shadow:var(--shadow)}.lock-mark{width:64px;height:64px;border-radius:18px;font-size:26px}.lock-hero h1{font-size:clamp(24px,3vw,32px);letter-spacing:-.02em;margin-bottom:4px}.lock-hero .muted{max-width:720px;font-size:14px}.lock-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:16px;margin-top:18px}.lock-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:var(--shadow)}.lock-card h2{font-size:19px;letter-spacing:-.01em;margin-bottom:8px}.lock-card .section-head h2{margin-bottom:2px}.lock-card .form{margin-top:14px}.lock-rules{margin:12px 0 16px;padding-left:20px;color:#475569;font-size:13.5px;display:flex;flex-direction:column;gap:8px}.marx-status{display:flex;flex-direction:column;gap:2px;padding:12px 14px;border-radius:12px;background:var(--amber-soft);border:1px solid #fde68a;margin-bottom:12px}.marx-status strong{color:#92400e}.marx-code{margin:10px 0 4px;flex-wrap:wrap}.marx-code .muted{width:100%}.lock-notice{display:flex;align-items:center;gap:16px;border:1px solid #fde68a;background:var(--amber-soft);border-radius:18px;padding:18px 20px;margin-top:18px}.lock-notice>div{flex:1}.lock-notice h2{font-size:18px;margin-bottom:2px}.account-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.25fr);gap:14px;margin:16px 0 18px}.account-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px 20px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:8px}.account-card code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:22px;font-weight:800;letter-spacing:.18em;color:var(--blue-dark)}.invite-card .btn{align-self:flex-start}.account-card-head{display:flex;align-items:center;justify-content:space-between;gap:8px}.access-list{display:flex;flex-direction:column;gap:10px}.access-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:10px;border-top:1px solid var(--line)}.access-row:first-child{border-top:0;padding-top:0}.access-row>div{display:flex;flex-direction:column;gap:1px;min-width:0}.announce-modal{width:min(520px,100%)}.announce-sub{margin-left:10px}.announce-tabs{margin:14px 0 16px}.announce-card{border:1px solid #dbeafe;background:linear-gradient(180deg,#f8fbff,#fff);border-radius:16px;padding:18px}.announce-stamp{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12px;color:var(--muted);margin-bottom:8px}.announce-stamp span{background:var(--blue-soft);color:var(--blue-dark);font-weight:800;letter-spacing:.08em;border-radius:999px;padding:3px 10px;font-size:11px}.announce-card h2{font-size:19px;letter-spacing:-.01em;margin-bottom:8px}.announce-body{white-space:pre-wrap;line-height:1.75;color:#334155;font-size:14px}.announce-nav{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:16px;border-top:1px dashed var(--line);padding-top:12px}.announce-timeline{display:flex;flex-direction:column;max-height:52vh;overflow:auto;padding-right:4px}.announce-line{display:flex;gap:12px;padding:10px 0 14px}.announce-line+.announce-line{border-top:1px dashed var(--line)}.announce-dot{width:9px;height:9px;border-radius:50%;background:var(--blue);margin-top:6px;flex:none;box-shadow:0 0 0 3px var(--blue-soft)}.announce-line strong{display:block;font-size:14px}.announce-line-body{margin-top:2px;display:block;line-height:1.7;white-space:pre-wrap}.announce-empty{padding:28px;text-align:center;border:1px dashed var(--line);border-radius:14px}.contact-modal{width:min(540px,100%)}.contact-lead{font-size:13px;margin-top:4px}.contact-body{display:grid;grid-template-columns:200px minmax(0,1fr);gap:18px;margin-top:16px;align-items:start}.contact-qr{display:flex;flex-direction:column;align-items:center;gap:6px;border:1px solid var(--line);border-radius:14px;padding:10px;background:#fff}.contact-qr img{width:100%;border-radius:8px}.contact-info{display:flex;flex-direction:column;gap:14px}.contact-item{display:flex;flex-direction:column;gap:3px}.contact-label{font-size:12px;font-weight:700;color:var(--muted);letter-spacing:.04em}.contact-email{font-size:15px;word-break:break-all}.contact-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:4px}@media (max-width: 980px){.lock-grid,.account-grid{grid-template-columns:1fr}}@media (max-width: 720px){.topbar-contact{display:none}.topbar-tools{gap:4px}.mobile-nav{grid-template-columns:repeat(5,1fr)}.subject-grid{grid-template-columns:1fr}.subjects-hero,.invite-banner{align-items:flex-start;flex-direction:column}.invite-code-box{width:100%;justify-content:space-between}.lock-hero{align-items:flex-start;flex-direction:column;padding:20px}.lock-mark{width:52px;height:52px;border-radius:15px;font-size:22px}.lock-card{padding:18px}.lock-notice{align-items:flex-start;flex-wrap:wrap}.lock-notice .btn{width:100%}.account-card code{font-size:20px}.contact-body{grid-template-columns:1fr}.contact-qr{max-width:230px;margin:0 auto}.announce-tabs{grid-template-columns:1fr 1fr}}.code-row{display:flex;gap:8px;align-items:stretch}.code-row input{flex:1;min-width:0}.code-row .btn{flex-shrink:0;white-space:nowrap}@media (max-width: 420px){.code-row{flex-direction:column}.code-row .btn{width:100%}}.tag-danger{background:var(--red-soft);color:var(--red)}.points-chip{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border:1px solid #fde68a;border-radius:999px;background:var(--amber-soft);color:#92400e;font-size:13px;font-weight:600;transition:transform .15s,box-shadow .15s}.points-chip:hover{transform:translateY(-1px);box-shadow:0 6px 16px #d9770629}.points-chip strong{font-size:16px;color:var(--amber)}.subject-diy{text-decoration:none;border-style:dashed;border-color:#c7d2fe;background:linear-gradient(180deg,#fff,#f5f7ff)}.subject-diy:hover{border-color:#818cf8;box-shadow:0 12px 30px #4f46e51f}.subject-diy .subject-mark{background:var(--violet-soft);color:var(--violet)}.topbar-name small{display:block;font-size:11px;font-weight:500;color:var(--muted);line-height:1.2}.diy-page{display:flex;flex-direction:column;gap:4px}.diy-hero{display:flex;align-items:flex-end;justify-content:space-between;gap:22px;flex-wrap:wrap;margin:18px 0 26px}.diy-hero h1{font-size:clamp(26px,3vw,34px);letter-spacing:-.02em;margin:4px 0 8px}.diy-hero .muted{max-width:620px;font-size:14px}.diy-balance{min-width:230px;padding:18px 20px;border:1px solid #fde68a;border-radius:var(--radius);background:linear-gradient(160deg,#fffbeb,#fff7ed);box-shadow:var(--shadow);display:flex;flex-direction:column;gap:4px}.diy-balance strong{font-size:34px;line-height:1.1;color:var(--amber)}.diy-balance-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}.diy-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:18px;align-items:start}.diy-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;display:flex;flex-direction:column;gap:14px}.diy-panel .section-head{margin-bottom:2px;align-items:flex-start}.diy-panel .section-head h2{font-size:19px}.diy-panel .section-head p{margin-top:4px;font-size:13px}.diy-drop{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;min-height:148px;padding:22px;border:2px dashed #cbd5e1;border-radius:var(--radius-sm);background:#f8fafc;text-align:center;cursor:pointer;transition:border-color .15s,background .15s}.diy-drop:hover,.diy-drop.dragging{border-color:var(--blue);background:var(--blue-soft)}.diy-drop.has-file{border-color:#86efac;background:var(--green-soft)}.diy-drop-icon{font-size:26px;line-height:1;color:var(--blue)}.diy-submit{width:100%}.diy-errors{border:1px solid #fecaca;border-radius:var(--radius-sm);background:var(--red-soft);padding:14px 16px;font-size:13px;color:#991b1b}.diy-errors ul{margin:8px 0;padding-left:18px;display:flex;flex-direction:column;gap:4px;max-height:220px;overflow:auto}.diy-errors code{display:inline-block;margin-right:6px;padding:1px 6px;border-radius:6px;background:#fee2e2;color:#991b1b;font-size:12px}.diy-errors .muted{color:#b91c1c}.diy-success{border:1px solid #a7f3d0;border-radius:var(--radius-sm);background:var(--green-soft);padding:14px 16px;font-size:13px;color:#065f46}.diy-success-actions{display:flex;gap:8px;margin-top:10px}.diy-rules{display:flex;flex-direction:column;gap:8px;font-size:13px}.diy-rules>div{padding:10px 12px;border-radius:var(--radius-sm);background:#f8fafc;border:1px solid var(--line)}.diy-rules strong{display:block;margin-bottom:3px;color:var(--text)}.diy-rules span{color:var(--muted)}.diy-sample{margin:0;padding:14px;max-height:260px;overflow:auto;border-radius:var(--radius-sm);background:#0f172a;color:#e2e8f0;font-size:12px;line-height:1.6;white-space:pre-wrap;word-break:break-word}.diy-help-actions{display:flex;gap:8px;flex-wrap:wrap}.diy-capacity{height:6px;margin-bottom:16px;border-radius:999px;background:#e2e8f0;overflow:hidden}.diy-capacity>span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--blue) 0%,var(--violet) 100%);transition:width .3s}.diy-bank-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}.diy-bank-card{display:flex;flex-direction:column;gap:10px;padding:16px;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow)}.diy-bank-top{display:flex;align-items:center;gap:10px;min-width:0}.diy-bank-top>div{display:flex;flex-direction:column;min-width:0}.diy-bank-top strong,.diy-source{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.diy-bank-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:auto}.points-card{display:flex;flex-direction:column;gap:10px}.points-balance{display:flex;align-items:baseline;gap:6px}.points-balance strong{font-size:32px;line-height:1.1;color:var(--amber)}.points-ledger{display:flex;flex-direction:column;border-top:1px solid var(--line)}.points-ledger-wide{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--card);padding:0 14px}.points-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto auto;align-items:center;gap:12px;padding:9px 0;border-bottom:1px solid var(--line);font-size:13px}.points-row:last-child{border-bottom:0}.points-row>span:nth-child(2){overflow:hidden;text-overflow:ellipsis}.points-plus{color:var(--green)}.points-minus{color:var(--red)}.points-actions{display:flex;gap:8px;flex-wrap:wrap}.diy-mini-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}.diy-mini-card{position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:4px;padding:14px 16px;text-align:left;font:inherit;color:inherit;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--card);box-shadow:var(--shadow);cursor:pointer;transition:transform .15s,border-color .15s}.diy-mini-card:hover{transform:translateY(-2px);border-color:#bfdbfe}.diy-mini-card .chapter-arrow{position:absolute;right:14px;top:50%;transform:translateY(-50%)}@media (max-width: 860px){.diy-layout{grid-template-columns:minmax(0,1fr)}.diy-hero{align-items:stretch}.diy-balance{min-width:0}}@media (max-width: 560px){.points-row{grid-template-columns:minmax(0,1fr) auto auto}.points-row>span:first-child{display:none}.diy-panel{padding:16px}}.diy-context-bar{border-bottom:1px solid #dbe4ff;background:linear-gradient(90deg,#f7f9ff,#f5f3ff)}.diy-context-inner{max-width:var(--max);margin:0 auto;padding:9px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.diy-context-title{display:flex;align-items:center;gap:9px;min-width:0}.diy-context-title strong{font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.diy-context-badge{flex:none;padding:3px 9px;border-radius:999px;background:var(--violet-soft);color:var(--violet);font-size:11px;font-weight:700;letter-spacing:.04em}.diy-context-links{display:flex;align-items:center;gap:4px;flex-wrap:wrap}.diy-context-links a{padding:4px 9px;border-radius:999px;color:var(--muted);font-size:13px;font-weight:600;transition:background .15s,color .15s}.diy-context-links a:hover,.diy-context-links a.active{background:#fff;color:var(--violet);box-shadow:0 1px 3px #0f172a14}.diy-tabs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-bottom:20px}.diy-tab{display:flex;align-items:center;gap:13px;padding:15px 17px;text-align:left;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow);transition:transform .15s,border-color .15s,box-shadow .15s}.diy-tab:hover{transform:translateY(-1px);border-color:#c7d2fe}.diy-tab.active{border-color:#a78bfa;background:linear-gradient(150deg,#fff,#f5f3ff);box-shadow:0 12px 28px #7c3aed1f}.diy-tab-icon{flex:none;width:40px;height:40px;display:grid;place-items:center;border-radius:12px;background:var(--violet-soft);color:var(--violet);font-size:16px}.diy-tab.active .diy-tab-icon{background:var(--violet);color:#fff}.diy-tab-copy{display:flex;flex-direction:column;line-height:1.35;min-width:0}.diy-tab-copy strong{font-size:16px}.diy-tab-copy small{color:var(--muted);font-size:12px}.diy-tab-count{margin-left:auto;flex:none;padding:3px 9px;border-radius:999px;background:#eef2ff;color:#4338ca;font-size:12px;font-weight:700}.diy-practice-section{padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow)}.diy-practice-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-bottom:14px}.diy-practice-head h2{font-size:20px;margin-bottom:4px}.diy-practice-head p{max-width:640px;font-size:13px}.diy-feature-strip{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:18px}.diy-feature-strip span{padding:4px 10px;border:1px solid #e0e7ff;border-radius:999px;background:#f8faff;color:#4338ca;font-size:12px;font-weight:600}.diy-capacity-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:7px}.diy-practice-section .diy-capacity{margin-bottom:18px}.diy-practice-empty{margin-top:4px}.diy-practice-empty .btn{margin-top:12px}.diy-practice-card{transition:transform .15s,border-color .15s,box-shadow .15s}.diy-practice-card:hover{transform:translateY(-2px);border-color:#c7d2fe;box-shadow:0 14px 32px #2563eb1a}.diy-bank-top>.tag{margin-left:auto;flex:none}.diy-entry-banner{display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap;margin-top:20px;padding:22px 26px;border:1px dashed #c4b5fd;border-radius:var(--radius);background:linear-gradient(135deg,#faf9ff,#f5f8ff);text-decoration:none;transition:transform .15s,border-color .15s,box-shadow .15s}.diy-entry-banner:hover{transform:translateY(-2px);border-color:#a78bfa;box-shadow:0 18px 40px #7c3aed1f}.diy-entry-main{display:flex;align-items:center;gap:16px;min-width:0}.diy-entry-main>div{min-width:0}.diy-entry-main h2{font-size:21px;letter-spacing:-.01em;margin:2px 0 4px}.diy-entry-main p{max-width:640px;font-size:13px}.diy-entry-mark{flex:none;width:54px;height:54px;display:grid;place-items:center;border-radius:16px;background:var(--violet);color:#fff;font-weight:800;font-size:15px;letter-spacing:.03em;box-shadow:0 10px 22px #7c3aed42}.diy-entry-steps{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.diy-entry-steps span{display:inline-flex;align-items:center;gap:6px;padding:6px 11px;border-radius:999px;background:#fff;border:1px solid #e0e7ff;color:#4338ca;font-size:12px;font-weight:600}.diy-entry-steps strong{color:#a5b4fc;font-size:11px}.diy-entry-go{flex:none;color:var(--violet);font-size:13px;font-weight:700}.diy-empty-inline{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;padding:16px 18px;border:1px dashed var(--line);border-radius:var(--radius-sm);background:#fbfcff;color:var(--muted);font-size:13px}@media (max-width: 860px){.diy-tabs{grid-template-columns:minmax(0,1fr)}.diy-context-inner{padding:9px 16px}.diy-practice-section{padding:17px}.diy-entry-banner{padding:18px}}@media (max-width: 560px){.diy-tab-count{display:none}.diy-entry-main{align-items:flex-start}.diy-entry-mark{width:44px;height:44px;border-radius:13px;font-size:13px}.diy-entry-go{display:none}.diy-context-links a{padding:3px 7px}}.workspace-switch{display:inline-flex;align-items:center;gap:2px;padding:3px;border:1px solid var(--line);border-radius:999px;background:#f8fafc}.workspace-option{padding:6px 14px;border-radius:999px;color:var(--muted);font-size:13px;font-weight:700;line-height:1.2;white-space:nowrap;transition:background .15s,color .15s,box-shadow .15s}.workspace-option:hover{color:var(--text)}.workspace-option.active{background:#fff;color:var(--blue);box-shadow:0 1px 4px #0f172a1f}.workspace-option.active[href="/diy"]{color:var(--violet)}.topnav-utilities{margin-left:auto}.topbar-tools.has-utilities{margin-left:0}.audience-badge{display:inline-flex;align-items:center;gap:5px;padding:3px 9px;border-radius:999px;background:var(--blue-soft);color:#1d4ed8;font-size:12px;font-weight:700;line-height:1.4;white-space:nowrap}.audience-badge.is-external{background:var(--violet-soft);color:var(--violet)}.profile-name{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.identity-choice{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.identity-card{display:flex;flex-direction:column;gap:5px;padding:14px 15px;text-align:left;font:inherit;color:inherit;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--card);cursor:pointer;transition:border-color .15s,background .15s,box-shadow .15s}.identity-card:hover{border-color:#c7d2fe}.identity-card.active{border-color:var(--blue);background:linear-gradient(150deg,#fff,#eff6ff);box-shadow:0 0 0 3px #2563eb1a}.identity-card[data-audience=external].active{border-color:var(--violet);background:linear-gradient(150deg,#fff,#f5f3ff);box-shadow:0 0 0 3px #7c3aed1a}.identity-card strong{display:flex;align-items:center;gap:6px;font-size:14px}.identity-card small{color:var(--muted);font-size:12px;line-height:1.5}.identity-fields{display:flex;flex-direction:column;gap:12px}.identity-fields>.field-label{font-size:13px;font-weight:600;color:#334155}.identity-note{margin:0}.identity-note{padding:11px 13px;border:1px solid #e0e7ff;border-radius:var(--radius-sm);background:#f8faff;color:#334155;font-size:12.5px;line-height:1.6}@media (max-width: 720px){.workspace-switch{display:none}.mobile-nav{grid-auto-flow:column;grid-auto-columns:1fr;grid-template-columns:none}.identity-choice{grid-template-columns:minmax(0,1fr)}}.multi-entry{display:flex;align-items:center;gap:14px;margin:18px 0 4px;padding:16px 18px;border:1px dashed #bfdbfe;border-radius:var(--radius);background:linear-gradient(120deg,#f8fbff,#eef4ff);transition:border-color .15s,box-shadow .15s,transform .15s}.multi-entry:hover{border-color:#60a5fa;box-shadow:0 10px 26px #2563eb1f;transform:translateY(-1px)}.multi-entry-mark{display:grid;place-items:center;width:42px;height:42px;flex:none;border-radius:13px;background:var(--blue);color:#fff;font-size:22px;line-height:1;box-shadow:0 7px 16px #2563eb3d}.multi-entry-copy{display:flex;flex:1;min-width:0;flex-direction:column;gap:3px}.multi-entry-copy strong{font-size:15px}.multi-entry-copy span{color:var(--muted);font-size:12.5px;line-height:1.5}.multi-entry-arrow{flex:none;color:var(--blue);font-size:13px;font-weight:700}.scope-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:4px 0 14px}.scope-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:10px}.scope-card{display:flex;align-items:flex-start;gap:11px;padding:13px 14px;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;color:inherit;font:inherit;text-align:left;cursor:pointer;transition:border-color .15s,background .15s,box-shadow .15s}.scope-card:hover{border-color:#c7d2fe}.scope-card.active{border-color:var(--blue);background:linear-gradient(150deg,#fff,#f5f9ff);box-shadow:0 0 0 3px #2563eb17}.scope-check{display:grid;place-items:center;width:22px;height:22px;flex:none;margin-top:1px;border:1.5px solid #cbd5e1;border-radius:7px;background:#fff;color:#fff;font-size:13px;font-weight:800;line-height:1;transition:background .15s,border-color .15s}.scope-card.active .scope-check{border-color:var(--blue);background:var(--blue)}.scope-card-main{display:flex;flex:1;min-width:0;flex-direction:column;gap:3px}.scope-card-main strong{font-size:14px;line-height:1.35}.scope-card-meta{color:var(--muted);font-size:12px;line-height:1.45}.scope-card .progress{margin-top:5px}.scope-empty-hint{margin:12px 0 0;padding:10px 12px;border:1px solid #fde68a;border-radius:var(--radius-sm);background:var(--amber-soft);color:#92400e;font-size:12.5px}@media (max-width: 720px){.multi-entry{align-items:flex-start;padding:14px}.multi-entry-arrow{display:none}.scope-toolbar{align-items:flex-start;flex-direction:column}.scope-grid{grid-template-columns:minmax(0,1fr)}}