:root{--bg: #0d1020;--bg-deep: #090b15;--sidebar: #111426;--panel: #171b2d;--panel-raised: #1e2339;--panel-soft: #252b43;--line: #3a4161;--line-bright: #566083;--ink: #f4f1ea;--muted: #a4abc2;--dim: #747d9b;--coral: #ff718f;--coral-dark: #d94d73;--cyan: #59dbe0;--cyan-dark: #1faab5;--yellow: #ffd166;--lilac: #c5b6ff;--paper: #eee8dc;--paper-ink: #171928;--shadow: #070810;font-family:Microsoft YaHei,PingFang SC,system-ui,sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}html{min-width:320px;background:var(--bg)}body{min-width:320px;min-height:100vh;margin:0;overflow-x:hidden;background:var(--bg);color:var(--ink)}body:before{position:fixed;z-index:-1;top:0;right:0;bottom:0;left:0;content:"";pointer-events:none;opacity:.24;background-image:radial-gradient(circle,rgba(197,182,255,.32) 1px,transparent 1.2px);background-size:19px 19px}button,input,textarea,select{font:inherit}button{border:0}button:focus-visible,[role=button]:focus-visible{outline:3px solid var(--yellow);outline-offset:3px}button:disabled{cursor:not-allowed}img{display:block;max-width:100%}pre,code{font-family:ui-monospace,Cascadia Code,Consolas,monospace}#root,.app-frame{min-height:100vh}.app-main{min-width:0;min-height:100vh;margin-left:248px}.app-topbar{position:sticky;z-index:10;top:0;display:flex;align-items:center;justify-content:space-between;min-height:72px;padding:14px clamp(20px,4vw,52px);background:#0d1020f5;border-bottom:1px solid rgba(86,96,131,.42);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.app-topbar>div:first-child{display:grid;gap:3px}.topbar-kicker,.panel-kicker,.reader-number,.reader-progress,.quiz-title,.syllabus-label,.offline-mark,.speech-label{font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.topbar-kicker{color:var(--dim)}.app-topbar strong{font-size:16px;font-weight:800}.topbar-tools{display:flex;align-items:center;gap:18px;color:var(--muted)}.offline-mark{display:inline-flex;align-items:center;gap:7px;color:var(--cyan);white-space:nowrap}.offline-mark span{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px #59dbe021}.syllabus-label{color:var(--dim);white-space:nowrap}.content-wrap{width:min(1360px,100%);margin:0 auto;padding:28px clamp(20px,4vw,52px) 72px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:8px;box-shadow:5px 5px 0 var(--shadow)}.panel-heading-row,.section-title-row{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.panel-heading-row h2,.section-title-row h2{margin:5px 0 0;font-size:21px;line-height:1.25}.panel-kicker{color:var(--cyan)}.button,.text-action,.small-action,.icon-button,.side-nav-item,.subject-current,.subject-menu button,.review-tabs button,.palette-grid button,.answer-option,.battle-option,.stat-chip,.mobile-menu-trigger{-webkit-tap-highlight-color:transparent}.button{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:42px;padding:9px 15px;color:var(--ink);font-size:13px;font-weight:800;line-height:1.25;border:1px solid transparent;border-radius:6px;cursor:pointer;transition:transform .15s ease,background .15s ease,border-color .15s ease}.button:hover:not(:disabled){transform:translate(-1px,-1px)}.button-coral{color:#1a1020;background:var(--coral);border-color:#ff9bb0;box-shadow:3px 3px 0 var(--shadow)}.button-coral:hover:not(:disabled){background:#ff86a0}.button-ghost{color:var(--ink);background:transparent;border-color:var(--line-bright)}.button-ghost:hover:not(:disabled){background:#c5b6ff1a;border-color:var(--lilac)}.button-ghost.dark{color:var(--ink);background:var(--panel-raised);border-color:var(--line-bright)}.button-disabled,.button:disabled{color:#777d96;background:#25283b;border-color:#343950;box-shadow:none}.text-action,.small-action{display:inline-flex;align-items:center;gap:6px;padding:4px 0;color:var(--cyan);background:transparent;font-size:12px;font-weight:800;cursor:pointer}.text-action:hover,.small-action:hover{color:var(--yellow)}.icon-button{display:inline-grid;place-items:center;width:38px;height:38px;padding:0;color:var(--muted);background:transparent;border:1px solid var(--line);border-radius:6px;cursor:pointer;transition:color .15s ease,border-color .15s ease,background .15s ease}.icon-button:hover,.icon-button.is-starred{color:var(--yellow);border-color:var(--yellow);background:#ffd16614}.dark-icon{color:var(--muted);background:var(--panel-raised)}.shell-sidebar{position:fixed;z-index:30;top:0;bottom:0;left:0;display:flex;flex-direction:column;width:248px;padding:24px 16px 18px;background:var(--sidebar);border-right:1px solid var(--line)}.brand-lockup{display:flex;align-items:center;gap:11px;padding:0 8px 22px}.brand-sticker{display:grid;place-items:center;width:38px;height:38px;color:#1b1520;background:var(--yellow);border:2px solid var(--shadow);border-radius:50%;box-shadow:3px 3px 0 var(--coral);font-size:21px;font-weight:900;transform:rotate(-8deg)}.brand-lockup strong,.brand-lockup span,.sidebar-footer small,.edition-stamp span,.side-streak span{display:block}.brand-lockup strong{font-size:20px;line-height:1}.brand-lockup span{margin-top:4px;color:var(--dim);font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:9px;font-weight:700;letter-spacing:.08em}.sidebar-close{display:none;margin-left:auto;color:var(--muted);background:transparent;cursor:pointer}.subject-picker{position:relative}.subject-current{display:grid;grid-template-columns:9px minmax(0,1fr) auto;align-items:center;gap:10px;width:100%;min-height:54px;padding:8px 10px;color:var(--ink);background:#0b0e1a;border:1px solid var(--line);border-radius:6px;text-align:left;cursor:pointer}.subject-current>span:nth-child(2),.subject-menu button>span:nth-child(2){display:grid;min-width:0;gap:2px}.subject-current small,.subject-menu small{overflow:hidden;color:var(--dim);font-size:9px;font-weight:600;text-overflow:ellipsis;white-space:nowrap}.subject-current strong,.subject-menu strong{overflow:hidden;font-size:12px;text-overflow:ellipsis;white-space:nowrap}.subject-current>svg{color:var(--dim);transition:transform .16s ease}.subject-picker.is-open .subject-current>svg{transform:rotate(180deg)}.subject-accent{width:8px;height:28px;border-radius:2px;background:var(--coral)}.subject-accent.cyan{background:var(--cyan)}.subject-accent.yellow{background:var(--yellow)}.subject-accent.lilac{background:var(--lilac)}.subject-menu{position:absolute;z-index:40;top:calc(100% + 7px);left:0;display:none;width:280px;max-height:min(470px,calc(100vh - 125px));overflow-y:auto;padding:6px;background:#0b0e1a;border:1px solid var(--line-bright);border-radius:6px;box-shadow:7px 7px 0 var(--shadow)}.subject-picker.is-open .subject-menu{display:grid;gap:3px}.subject-menu button{display:grid;grid-template-columns:7px minmax(0,1fr) 18px;align-items:center;gap:9px;min-height:48px;padding:6px 8px;color:var(--muted);background:transparent;border-radius:4px;text-align:left;cursor:pointer}.subject-menu button:hover,.subject-menu button.is-active{color:var(--ink);background:var(--panel-soft)}.subject-menu button .subject-accent{width:6px;height:26px}.subject-menu button>svg{color:var(--yellow)}.side-streak{display:flex;align-items:center;gap:7px;margin:20px 8px 12px;color:var(--yellow);font-size:12px}.side-streak span{color:var(--muted)}.side-streak strong{margin-left:auto;color:var(--yellow)}.side-nav{display:grid;gap:4px}.side-nav-item{display:flex;align-items:center;gap:11px;min-height:44px;padding:0 11px;color:var(--muted);background:transparent;border-left:3px solid transparent;border-radius:4px;text-align:left;cursor:pointer;font-size:13px;font-weight:700;transition:background .15s ease,color .15s ease,border-color .15s ease}.side-nav-item:hover{color:var(--ink);background:#c5b6ff14}.side-nav-item.is-active{color:var(--ink);background:#242a42;border-left-color:var(--coral)}.side-nav-item em{display:inline-grid;place-items:center;min-width:22px;height:20px;margin-left:auto;padding:0 5px;color:#1b1220;background:var(--yellow);border-radius:10px;font-size:10px;font-style:normal}.sidebar-footer{display:grid;gap:13px;margin-top:auto;padding:16px 8px 0;border-top:1px dashed var(--line)}.edition-stamp{display:flex;align-items:center;gap:9px;color:var(--cyan)}.edition-stamp span strong,.edition-stamp span small{display:block}.edition-stamp span strong{color:var(--ink);font-size:12px}.edition-stamp span small{margin-top:2px;color:var(--dim);font-size:10px}.sidebar-footer>small{color:var(--dim);font-size:10px;line-height:1.5}.mobile-menu-trigger{position:fixed;z-index:25;top:15px;left:16px;display:none;place-items:center;width:38px;height:38px;color:var(--ink);background:var(--panel-raised);border:1px solid var(--line-bright);border-radius:6px;cursor:pointer}.shell-backdrop{display:none}.home-view,.learn-view,.practice-view,.lesson-reader,.paper-view,.quiz-view,.result-view,.wrong-view,.stats-view,.vault-view{display:grid;gap:22px}.hero-panel{position:relative;display:grid;grid-template-columns:minmax(0,1fr) 270px;min-height:360px;overflow:hidden;padding:clamp(28px,5vw,58px);background:#20263e;border:1px solid var(--line-bright);border-radius:8px;box-shadow:7px 7px 0 var(--shadow)}.hero-panel:after{position:absolute;right:31%;bottom:-80px;width:260px;height:260px;content:"";border:1px solid rgba(255,209,102,.25);border-radius:50%;box-shadow:0 0 0 25px #ffd1660d,0 0 0 51px #ffd1660a;transform:rotate(18deg)}.hero-web,.hero-mysql,.hero-wps{background:#183039}.hero-python,.hero-office{background:#333026}.hero-cpp,.hero-access{background:#29253b}.hero-java{background:#36242e}.hero-copy{position:relative;z-index:1;max-width:700px}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--yellow);font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:10px;font-weight:700;letter-spacing:.08em}.eyebrow-dot{width:8px;height:8px;background:var(--coral);border:2px solid var(--shadow);border-radius:50%}.hero-copy h1{max-width:680px;margin:20px 0 14px;font-size:clamp(30px,4vw,54px);line-height:1.15;letter-spacing:0}.hero-copy h1 em{color:var(--coral);font-style:normal;text-decoration:underline;text-decoration-thickness:3px;text-underline-offset:6px}.hero-web .hero-copy h1 em,.hero-mysql .hero-copy h1 em,.hero-wps .hero-copy h1 em{color:var(--cyan)}.hero-python .hero-copy h1 em,.hero-office .hero-copy h1 em{color:var(--yellow)}.hero-cpp .hero-copy h1 em,.hero-access .hero-copy h1 em{color:var(--lilac)}.hero-copy p{max-width:580px;margin:0;color:var(--muted);font-size:15px;line-height:1.8}.hero-actions,.hero-meta,.result-actions,.checkpoint-actions,.reader-nav,.quiz-actions,.vault-actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px}.hero-actions{margin-top:25px}.hero-meta{margin-top:22px;color:var(--dim);font-size:11px}.hero-meta span,.route-footer span,.vault-actions>span,.paper-rule span,.reader-duration,.question-tags,.knowledge-line{display:inline-flex;align-items:center;gap:6px}.mascot{position:relative;z-index:2;align-self:end;display:flex;align-items:flex-end;justify-content:center;min-width:0}.mascot-portrait{position:relative;width:190px;height:235px}.mascot-portrait:before{position:absolute;right:8px;bottom:8px;width:164px;height:164px;content:"";background:var(--coral);border:3px solid var(--shadow);border-radius:50% 44% 46% 38%;transform:rotate(-9deg)}.mascot-cyan .mascot-portrait:before{background:var(--cyan)}.mascot-yellow .mascot-portrait:before{background:var(--yellow)}.mascot-portrait img{position:absolute;z-index:1;right:0;bottom:0;width:190px;height:230px;object-fit:contain;object-position:bottom center;filter:drop-shadow(4px 5px 0 var(--shadow))}.mascot-spark{position:absolute;z-index:3;right:5px;top:17px;color:var(--yellow);font-size:24px;transform:rotate(12deg)}.speech-bubble{position:absolute;z-index:4;top:-15px;left:-62px;display:grid;gap:5px;width:185px;padding:12px 14px;color:var(--paper-ink);background:var(--paper);border:2px solid var(--shadow);border-radius:5px;box-shadow:4px 4px 0 var(--shadow);transform:rotate(-4deg)}.speech-bubble:after{position:absolute;right:24px;bottom:-12px;width:18px;height:18px;content:"";background:var(--paper);border-right:2px solid var(--shadow);border-bottom:2px solid var(--shadow);transform:rotate(45deg)}.speech-label{color:var(--coral-dark);font-size:8px;letter-spacing:.03em}.speech-bubble strong{font-size:13px;line-height:1.45}.mascot-small .mascot-portrait{width:124px;height:145px}.mascot-small .mascot-portrait:before{right:3px;bottom:4px;width:102px;height:102px;border-width:2px}.mascot-small .mascot-portrait img{width:124px;height:145px}.mascot-small .speech-bubble{top:-7px;left:-138px;width:170px;padding:10px 12px}.mascot-small .speech-bubble strong{font-size:12px}.panel-noise{position:absolute;right:0;bottom:0;width:48%;height:100%;pointer-events:none;opacity:.22;background-image:radial-gradient(circle,rgba(255,255,255,.6) 1px,transparent 1.3px);background-size:12px 12px;-webkit-mask-image:linear-gradient(to left,black,transparent);mask-image:linear-gradient(to left,black,transparent)}.stat-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.stat-chip{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;min-width:0;padding:13px;background:var(--panel);border:1px solid var(--line);border-radius:6px}.stat-chip.clickable{cursor:pointer}.stat-chip.clickable:hover{border-color:var(--lilac);background:var(--panel-raised)}.stat-chip-icon,.battle-icon,.learn-progress-icon,.drop-icon,.practice-mark,.review-icon{display:grid;place-items:center;flex:0 0 auto}.stat-chip-icon{width:32px;height:32px;border-radius:5px}.stat-chip-icon.cyan,.battle-icon.cyan{color:#0d2529;background:var(--cyan)}.stat-chip-icon.coral,.battle-icon.coral{color:#2a111d;background:var(--coral)}.stat-chip-icon.yellow{color:#2a2111;background:var(--yellow)}.stat-chip-icon.lilac{color:#1d1730;background:var(--lilac)}.stat-chip>span:nth-child(2){min-width:0}.stat-chip small,.stat-chip strong,.stat-chip-tail{display:block}.stat-chip small{overflow:hidden;color:var(--dim);font-size:10px;text-overflow:ellipsis;white-space:nowrap}.stat-chip strong{margin-top:3px;color:var(--ink);font-size:17px;line-height:1.1}.stat-chip-tail{color:var(--dim);font-size:10px;text-align:right;white-space:nowrap}.home-grid{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(280px,.7fr);gap:18px}.manga-panel{padding:22px}.manga-stamp{display:inline-flex;align-items:center;gap:5px;padding:5px 8px;color:#201827;background:var(--yellow);border:1px solid var(--shadow);border-radius:3px;font-size:10px;font-weight:900;transform:rotate(2deg)}.panel-heading-icon{color:var(--coral)}.route-steps{display:grid;gap:9px;margin-top:22px}.route-step{display:grid;grid-template-columns:35px 1fr auto;align-items:center;gap:12px;min-height:58px;padding:9px 12px;border:1px solid var(--line);background:#1c2136}.route-step.is-current{border-color:var(--coral)}.route-step-no,.training-index{color:var(--yellow);font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:12px;font-weight:700}.route-step strong,.route-step small{display:block}.route-step strong{font-size:13px}.route-step small{margin-top:3px;overflow:hidden;color:var(--muted);font-size:11px;text-overflow:ellipsis;white-space:nowrap}.route-state{display:grid;place-items:center;width:28px;height:28px;color:var(--coral);background:#ff718f1f;border-radius:50%}.route-state.locked{color:var(--dim);background:#a4abc214}.route-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px;color:var(--dim);font-size:11px}.battle-panel{background:#1d273b}.battle-option{display:grid;grid-template-columns:36px 1fr auto;align-items:center;gap:10px;min-height:67px;margin-top:13px;padding:10px;color:var(--ink);border:1px solid var(--line);cursor:pointer;transition:background .15s ease,border-color .15s ease,transform .15s ease}.battle-option:hover{background:#27334d;border-color:var(--cyan);transform:translate(2px)}.battle-icon{width:36px;height:36px;border-radius:5px}.battle-option strong,.battle-option small{display:block}.battle-option strong{font-size:13px}.battle-option small{margin-top:3px;color:var(--muted);font-size:10px}.last-score{display:flex;align-items:center;justify-content:space-between;margin-top:22px;padding-top:17px;border-top:1px dashed var(--line);color:var(--muted);font-size:11px}.last-score strong{color:var(--yellow);font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:27px}.last-score small{margin-left:3px;font-family:Microsoft YaHei,PingFang SC,sans-serif;font-size:11px}.page-banner{display:flex;align-items:center;justify-content:space-between;min-height:184px;gap:22px;padding:28px 32px;background:#20243a;border:1px solid var(--line-bright);border-radius:8px;box-shadow:5px 5px 0 var(--shadow)}.page-banner h1{margin:8px 0;font-size:31px;line-height:1.2}.page-banner p{max-width:680px;margin:0;color:var(--muted);font-size:13px;line-height:1.75}.compact-banner{min-height:150px}.compact-banner>.review-icon,.practice-mark{width:76px;height:76px;color:var(--coral);background:#ff718f1f;border:1px solid var(--coral);border-radius:50%;transform:rotate(8deg)}.learn-progress{display:grid;grid-template-columns:auto auto minmax(120px,1fr) auto;align-items:center;gap:14px;padding:15px 18px;background:var(--panel);border:1px solid var(--line);border-radius:6px}.learn-progress-icon{width:34px;height:34px;color:#17202b;background:var(--cyan);border-radius:5px}.learn-progress strong,.learn-progress small{display:block}.learn-progress strong{font-size:13px}.learn-progress small{margin-top:3px;color:var(--muted);font-size:10px}.learn-progress-bar,.radar-track{position:relative;overflow:hidden;height:9px;background:#0d1020;border:1px solid var(--line)}.learn-progress-bar span{display:block;height:100%;background:var(--coral)}.learn-percent{color:var(--yellow);font-family:ui-monospace,Cascadia Code,Consolas,monospace}.lesson-section,.practice-section{display:grid;gap:15px}.lesson-section h2,.practice-section h2{margin-top:4px}.section-count{display:inline-flex;align-items:center;gap:5px;color:var(--muted);font-size:11px;white-space:nowrap}.course-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.course-card{position:relative;display:flex;flex-direction:column;min-height:194px;padding:17px;overflow:hidden;background:var(--panel);border:1px solid var(--line);border-radius:6px;box-shadow:3px 3px 0 var(--shadow)}.course-card:hover{border-color:var(--lilac)}.course-card.is-complete{border-color:#59dbe0a8}.course-card-top,.course-card-bottom{display:flex;align-items:center;justify-content:space-between;gap:10px}.chapter-number{color:var(--coral);font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:20px;font-weight:700}.course-status{display:inline-flex;align-items:center;gap:5px;color:var(--dim);font-size:10px}.is-complete .course-status{color:var(--cyan)}.course-card-copy{margin:24px 0 auto}.course-card-copy h3{margin:0;font-size:16px}.course-card-copy p{margin:8px 0 0;color:var(--muted);font-size:11px;line-height:1.6}.course-card-bottom{padding-top:15px;color:var(--dim);font-size:10px}.course-card-bottom>span{display:inline-flex;align-items:center;gap:5px}.course-lock{position:absolute;right:15px;bottom:48px;color:var(--line-bright)}.common-section{padding-top:7px;border-top:1px dashed var(--line)}.learn-note{display:flex;align-items:flex-start;gap:8px;color:var(--dim);font-size:11px;line-height:1.6}.practice-banner .practice-mark{color:var(--cyan);background:#59dbe01a;border-color:var(--cyan)}.training-list{display:grid;gap:9px}.training-row{display:grid;grid-template-columns:42px minmax(0,1fr) auto;align-items:center;gap:14px;min-height:96px;padding:14px 16px;background:var(--panel);border:1px solid var(--line);border-left:4px solid var(--line);border-radius:6px}.training-row.is-ready{border-left-color:var(--cyan)}.training-row.is-locked{opacity:.82}.training-index{font-size:18px}.training-copy{min-width:0}.training-title{display:flex;align-items:center;flex-wrap:wrap;gap:8px}.training-title strong{font-size:14px}.training-title span{display:inline-flex;align-items:center;gap:4px;font-size:10px;font-weight:800}.ready-label{color:var(--cyan)}.locked-label{color:var(--dim)}.training-copy p{margin:5px 0;overflow:hidden;color:var(--muted);font-size:11px;line-height:1.5;text-overflow:ellipsis;white-space:nowrap}.training-copy small{display:inline-flex;align-items:center;gap:5px;color:var(--dim);font-size:10px}.training-actions{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:10px}.common-training{padding-top:7px;border-top:1px dashed var(--line)}.reader-topbar,.quiz-topline{display:flex;align-items:center;justify-content:space-between;gap:14px}.reader-progress,.quiz-title{color:var(--yellow)}.reader-duration{color:var(--muted);font-size:11px}.reader-article{overflow:hidden;color:var(--paper-ink);background:var(--paper);border:2px solid var(--shadow);border-radius:6px;box-shadow:7px 7px 0 var(--coral-dark)}.reader-header{padding:clamp(24px,5vw,52px);background:#d9d0c1;border-bottom:2px solid #242534}.reader-number{color:var(--coral-dark)}.reader-header h1{max-width:760px;margin:14px 0 8px;font-size:clamp(28px,4vw,48px);line-height:1.14}.reader-header>p{max-width:760px;margin:0;color:#555567;font-size:14px;line-height:1.75}.reader-objectives{display:flex;align-items:center;flex-wrap:wrap;gap:7px;margin-top:24px}.reader-objectives>span{display:inline-flex;align-items:center;gap:5px;margin-right:4px;color:var(--coral-dark);font-size:11px;font-weight:900}.reader-objectives em{padding:5px 8px;color:#353448;background:#f1eadf;border:1px solid #9c9181;border-radius:3px;font-size:10px;font-style:normal}.reader-body{max-width:900px;margin:0 auto;padding:30px clamp(22px,6vw,76px) 42px}.reader-section{padding:18px 0 27px;border-bottom:1px dashed #aaa091}.reader-section:last-child{border-bottom:0}.reader-section-title{display:flex;align-items:baseline;gap:10px}.reader-section-title>span{color:var(--coral-dark);font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:12px;font-weight:700}.reader-section-title h2{margin:0;font-size:22px}.reader-section p{margin:15px 0 0;color:#454354;font-size:14px;line-height:1.95}.reader-section p code{padding:2px 5px;color:#8b3151;background:#ded4c6;border-radius:3px;font-size:.92em}.reader-code,.quiz-code,.vault-schema pre{overflow:auto;margin:18px 0 0;padding:16px;color:#dce7ff;background:#131728;border:1px solid #475273;border-left:4px solid var(--cyan);border-radius:4px;font-size:12px;line-height:1.75;white-space:pre-wrap}.reader-note{display:flex;align-items:flex-start;gap:9px;margin-top:18px;padding:12px 14px;color:#334;background:#d5e8e4;border-left:4px solid var(--cyan-dark);font-size:12px;line-height:1.65}.reader-note svg{flex:0 0 auto;margin-top:2px;color:var(--cyan-dark)}.reader-checklist{display:grid;gap:8px;margin:18px 0 0;padding:0;list-style:none}.reader-checklist li{display:flex;align-items:flex-start;gap:8px;color:#454354;font-size:12px;line-height:1.55}.reader-checklist svg{flex:0 0 auto;margin-top:2px;color:var(--coral-dark)}.reader-footer{padding:24px clamp(22px,6vw,76px) 30px;background:#d9d0c1;border-top:2px solid #242534}.checkpoint-card{display:grid;gap:9px;max-width:760px;padding:18px;background:#f5eee2;border:1px solid #9c9181;border-left:5px solid var(--coral)}.checkpoint-card .panel-kicker{color:var(--coral-dark)}.checkpoint-card strong{font-size:15px;line-height:1.55}.checkpoint-card small{color:#6e6870;font-size:11px}.checkpoint-actions{margin-top:6px}.completed-mark{display:inline-flex;align-items:center;gap:5px;color:#23848a;font-size:11px;font-weight:800}.reader-nav{justify-content:space-between}.paper-banner{background:#283246}.unlock-banner{display:flex;align-items:center;gap:12px;padding:14px 17px;color:var(--yellow);background:#262338;border:1px solid #695a85;border-left:4px solid var(--yellow);border-radius:5px}.unlock-banner>span{min-width:0;flex:1}.unlock-banner strong,.unlock-banner small{display:block}.unlock-banner strong{color:var(--ink);font-size:13px}.unlock-banner small{margin-top:3px;color:var(--muted);font-size:11px;line-height:1.5}.paper-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:11px}.paper-card{display:flex;flex-direction:column;min-height:295px;padding:16px;background:var(--panel);border:1px solid var(--line);border-top:4px solid var(--coral);border-radius:6px;box-shadow:3px 3px 0 var(--shadow)}.paper-card:nth-child(2n){border-top-color:var(--cyan)}.paper-card:nth-child(3n){border-top-color:var(--yellow)}.paper-card.is-locked{opacity:.8}.paper-card-top,.paper-rule{display:flex;align-items:center;justify-content:space-between;gap:8px}.year-badge{display:inline-grid;place-items:center;min-width:51px;min-height:30px;color:#221725;background:var(--coral);border:1px solid var(--shadow);border-radius:3px;font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:14px;font-weight:700}.paper-card:nth-child(2n) .year-badge{background:var(--cyan)}.paper-card:nth-child(3n) .year-badge{background:var(--yellow)}.paper-type{display:inline-flex;align-items:center;gap:4px;color:var(--dim);font-size:9px;text-align:right}.paper-card h2{margin:23px 0 9px;font-size:17px}.paper-focus{display:flex;align-items:flex-start;gap:6px;min-height:42px;margin:0;color:var(--yellow);font-size:11px;line-height:1.55}.paper-note{min-height:45px;margin:12px 0 15px;color:var(--muted);font-size:10px;line-height:1.55}.paper-rule{display:grid;align-items:start;justify-content:stretch;gap:6px;margin-top:auto;padding:12px 0;border-top:1px dashed var(--line);color:var(--dim);font-size:9px}.paper-card .button{width:100%;margin-top:8px;font-size:11px}.quiz-topline{padding-bottom:4px}.quiz-title{overflow:hidden;color:var(--yellow);text-overflow:ellipsis;white-space:nowrap}.quiz-clock{display:inline-flex;align-items:center;gap:6px;padding:7px 10px;color:var(--cyan);background:#13182a;border:1px solid var(--cyan-dark);border-radius:4px;font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:12px;font-weight:700;white-space:nowrap}.quiz-clock.is-danger{color:var(--coral);border-color:var(--coral-dark)}.quiz-layout{display:grid;grid-template-columns:minmax(0,1fr) 250px;align-items:start;gap:18px}.question-stage{min-width:0;padding:clamp(20px,4vw,37px)}.question-head{display:flex;align-items:flex-start;justify-content:space-between;gap:15px}.question-tags{flex-wrap:wrap}.subject-pill,.soft-tag{display:inline-flex;align-items:center;min-height:24px;padding:3px 8px;border-radius:3px;font-size:10px;font-weight:800}.subject-pill.c{color:#2b101c;background:var(--coral)}.subject-pill.web{color:#0b2529;background:var(--cyan)}.subject-pill.python,.subject-pill.office{color:#2b2110;background:var(--yellow)}.subject-pill.cpp,.subject-pill.access{color:#211a34;background:var(--lilac)}.subject-pill.mysql,.subject-pill.wps{color:#0b2529;background:var(--cyan)}.subject-pill.java{color:#2b101c;background:var(--coral)}.subject-pill.common{color:#2b2110;background:var(--yellow)}.soft-tag{color:var(--muted);background:#242a40;border:1px solid var(--line)}.question-index{flex:0 0 auto;color:var(--yellow);font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:12px;font-weight:700}.question-stage h1{max-width:850px;margin:28px 0 22px;font-size:clamp(20px,2.6vw,29px);line-height:1.55}.quiz-code{margin-top:-3px;margin-bottom:21px}.options-stack{display:grid;gap:9px}.answer-option{display:grid;grid-template-columns:32px minmax(0,1fr) 24px;align-items:center;gap:10px;min-height:54px;padding:9px 12px;color:var(--ink);background:#1d2339;border:1px solid var(--line);border-radius:5px;text-align:left;cursor:pointer;font-size:13px;line-height:1.5;transition:background .15s ease,border-color .15s ease,transform .15s ease}.answer-option:hover:not(:disabled){background:#28314d;border-color:var(--cyan);transform:translate(2px)}.answer-option:disabled{cursor:default}.answer-letter{display:grid;place-items:center;width:28px;height:28px;color:var(--muted);background:#111526;border:1px solid var(--line-bright);border-radius:50%;font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:11px;font-weight:700}.answer-icon{display:grid;place-items:center;color:var(--dim)}.answer-option.is-picked{border-color:var(--yellow)}.answer-option.is-picked .answer-letter{color:#231b10;background:var(--yellow);border-color:var(--yellow)}.answer-option.is-correct{background:#59dbe01f;border-color:var(--cyan)}.answer-option.is-correct .answer-letter{color:#0b2529;background:var(--cyan);border-color:var(--cyan)}.answer-option.is-wrong{background:#ff718f1a;border-color:var(--coral)}.answer-option.is-wrong .answer-letter{color:#2b101c;background:var(--coral);border-color:var(--coral)}.feedback-box{margin-top:17px;padding:15px;border:1px solid var(--line-bright);border-left:4px solid var(--cyan);background:#20283c}.feedback-box.is-wrong{border-left-color:var(--coral);background:#2b2235}.feedback-title{display:flex;align-items:center;gap:7px;color:var(--cyan);font-size:13px;font-weight:900}.feedback-box.is-wrong .feedback-title{color:var(--coral)}.feedback-box p{margin:8px 0 0;color:var(--muted);font-size:12px;line-height:1.7}.knowledge-line{margin-top:10px;color:var(--yellow);font-size:11px;line-height:1.6}.quiz-actions{justify-content:flex-end;margin-top:25px}.quiz-actions .icon-button{margin-right:auto}.quiz-side{display:grid;gap:14px;min-width:0}.quiz-panel{padding:17px}.quiz-side-heading{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:12px}.quiz-side-heading strong{color:var(--yellow);font-family:ui-monospace,Cascadia Code,Consolas,monospace}.palette-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:6px;margin-top:16px}.palette-grid button{min-width:0;aspect-ratio:1;color:var(--muted);background:#111526;border:1px solid var(--line);border-radius:3px;cursor:pointer;font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:10px}.palette-grid button:hover,.palette-grid button.is-current{color:#1d1725;background:var(--yellow);border-color:var(--yellow)}.palette-grid button.is-answered{color:#0c2629;background:var(--cyan);border-color:var(--cyan)}.palette-grid button.is-wrong{color:#2b101c;background:var(--coral);border-color:var(--coral)}.palette-grid button.is-current{box-shadow:0 0 0 2px var(--yellow),0 0 0 4px #111526}.quiz-legend{display:flex;flex-wrap:wrap;gap:9px;margin-top:17px;color:var(--dim);font-size:9px}.quiz-legend span{display:inline-flex;align-items:center;gap:4px}.quiz-legend i{width:8px;height:8px;border:1px solid var(--line-bright);border-radius:2px}.legend-current{background:var(--yellow)}.legend-answered{background:var(--cyan)}.legend-wrong{background:var(--coral)}.mission-panel{display:grid;gap:9px;border-top:3px solid var(--lilac)}.mission-panel strong{font-size:13px;line-height:1.55}.mission-panel small{color:var(--muted);font-size:10px;line-height:1.55}.result-banner{display:flex;align-items:center;justify-content:space-between;gap:22px;padding:28px 32px;background:#273040;border-top:4px solid var(--yellow)}.result-copy h1{margin:10px 0 6px;font-size:30px}.result-copy p{margin:0;color:var(--muted);font-size:12px}.result-actions{margin-top:20px}.result-score{display:grid;grid-template-columns:auto auto;align-items:end;gap:2px 7px;min-width:130px;color:var(--yellow);text-align:right}.result-score svg{grid-row:span 2;align-self:center}.result-score strong{font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:52px;line-height:1}.result-score span{color:var(--muted);font-size:12px}.result-stats,.stats-grid-v2{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.result-stats>div,.stats-grid-v2>div{display:flex;align-items:center;gap:10px;padding:15px;background:var(--panel);border:1px solid var(--line);border-radius:5px}.result-stats>div>svg,.stats-grid-v2>div>svg{color:var(--cyan)}.result-stats small,.result-stats strong,.stats-grid-v2 small,.stats-grid-v2 strong{display:block}.result-stats small,.stats-grid-v2 small{color:var(--dim);font-size:10px}.result-stats strong,.stats-grid-v2 strong{margin-top:3px;font-size:16px}.review-panel,.stats-panel,.vault-list{padding:22px}.review-list-v2,.wrong-list,.paper-log,.vault-list{display:grid;gap:8px}.review-list-v2{margin-top:18px}.review-item{display:grid;grid-template-columns:32px 24px minmax(0,1fr) auto;align-items:center;gap:10px;min-height:64px;padding:9px 11px;border-left:4px solid var(--line);background:#1d2236}.review-item.is-correct{border-left-color:var(--cyan)}.review-item.is-wrong{border-left-color:var(--coral)}.review-no{color:var(--yellow);font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:11px}.review-status-icon{display:grid;place-items:center;width:23px;height:23px;color:var(--cyan);background:#59dbe01a;border-radius:50%}.review-item.is-wrong .review-status-icon{color:var(--coral);background:#ff718f1a}.review-text{min-width:0}.review-text strong,.review-text small{display:block}.review-text strong{overflow:hidden;font-size:12px;line-height:1.45;text-overflow:ellipsis;white-space:nowrap}.review-text small{margin-top:4px;color:var(--muted);font-size:10px}.review-explanation{grid-column:3 / -1;margin:0 0 3px;color:var(--dim);font-size:10px;line-height:1.6}.review-tabs{display:flex;gap:7px;border-bottom:1px solid var(--line)}.review-tabs button{display:inline-flex;align-items:center;gap:6px;padding:10px 12px;color:var(--muted);background:transparent;border-bottom:3px solid transparent;cursor:pointer;font-size:12px;font-weight:800}.review-tabs button.is-active{color:var(--ink);border-bottom-color:var(--coral)}.wrong-list{gap:9px}.wrong-item{display:grid;grid-template-columns:34px minmax(0,1fr) auto;align-items:center;gap:12px;padding:13px 15px;background:var(--panel);border:1px solid var(--line);border-radius:5px}.wrong-index{color:var(--coral);font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:13px}.wrong-copy{display:grid;min-width:0;gap:5px}.wrong-copy .subject-pill{width:max-content}.wrong-copy strong{overflow:hidden;font-size:13px;line-height:1.5;text-overflow:ellipsis;white-space:nowrap}.wrong-copy small{overflow:hidden;color:var(--muted);font-size:10px;text-overflow:ellipsis;white-space:nowrap}.wrong-actions{display:flex;gap:7px}.empty-state-v2{display:grid;justify-items:center;gap:9px;padding:65px 20px;color:var(--dim);text-align:center;border:1px dashed var(--line-bright)}.empty-state-v2 h2{margin:0;color:var(--ink);font-size:19px}.empty-state-v2 p,.empty-inline{margin:0;color:var(--muted);font-size:12px;line-height:1.65}.stats-grid-v2{grid-template-columns:repeat(4,minmax(0,1fr))}.stats-grid-v2>div{display:grid;grid-template-columns:auto 1fr;gap:2px 9px}.stats-grid-v2>div>svg{grid-row:span 2;align-self:center;color:var(--coral)}.chapter-radar{display:grid;gap:13px;margin-top:22px}.radar-row{display:grid;grid-template-columns:minmax(120px,.6fr) minmax(100px,1fr) 42px;align-items:center;gap:12px;color:var(--muted);font-size:11px}.radar-track{height:12px}.radar-track i,.radar-track b{position:absolute;top:0;left:0;display:block;height:100%}.radar-track i{background:var(--cyan)}.radar-track b{background:var(--coral);opacity:.85}.radar-row small{color:var(--yellow);font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:10px;text-align:right}.radar-legend{display:flex;gap:14px;margin-top:17px;color:var(--dim);font-size:10px}.radar-legend span{display:inline-flex;align-items:center;gap:5px}.radar-legend i{width:9px;height:9px;border-radius:2px}.coverage-dot{background:var(--cyan)}.accuracy-dot{background:var(--coral)}.paper-log{margin-top:16px}.paper-log>div{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:14px;padding:10px 0;border-bottom:1px dashed var(--line);color:var(--muted);font-size:11px}.paper-log>div:last-child{border-bottom:0}.paper-log strong{color:var(--yellow);font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:18px}.paper-log strong small{margin-left:2px;color:var(--muted);font-family:Microsoft YaHei,PingFang SC,sans-serif;font-size:10px}.vault-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(240px,.8fr);gap:16px}.vault-import,.vault-schema{padding:20px}.vault-drop{display:grid;justify-items:center;gap:10px;padding:34px 18px;text-align:center;border:1px dashed var(--line-bright);cursor:pointer}.vault-drop:hover{border-color:var(--cyan);background:#59dbe00d}.drop-icon{width:48px;height:48px;color:#17202b;background:var(--cyan);border-radius:50%}.vault-drop strong{font-size:14px}.vault-drop small{max-width:340px;color:var(--muted);font-size:11px;line-height:1.6}.vault-drop .button{margin-top:4px}.vault-actions{justify-content:space-between;margin-top:16px;color:var(--muted);font-size:11px}.vault-schema h2{margin:9px 0 0;font-size:20px}.vault-schema pre{margin-top:15px;font-size:10px}.vault-list{gap:12px}.vault-list>.panel-heading-row{margin-bottom:4px}.vault-set{display:grid;grid-template-columns:35px minmax(0,1fr) auto;align-items:center;gap:10px;padding:10px;background:#1d2236;border:1px solid var(--line)}.set-icon{display:grid;place-items:center;width:32px;height:32px;color:var(--yellow);background:#ffd1661a}.vault-set strong,.vault-set small{display:block}.vault-set strong{overflow:hidden;font-size:12px;text-overflow:ellipsis;white-space:nowrap}.vault-set small{margin-top:3px;color:var(--muted);font-size:10px}.toast-v2{position:fixed;z-index:50;right:24px;bottom:24px;display:flex;align-items:center;gap:9px;max-width:min(390px,calc(100vw - 32px));padding:12px 13px;color:var(--ink);background:#272d45;border:1px solid var(--cyan);border-left:4px solid var(--coral);border-radius:5px;box-shadow:4px 4px 0 var(--shadow);font-size:12px}.toast-v2>svg{flex:0 0 auto;color:var(--yellow)}.toast-v2>span{min-width:0;line-height:1.5}.toast-v2 button{display:grid;place-items:center;flex:0 0 auto;width:25px;height:25px;color:var(--muted);background:transparent;cursor:pointer}@media (max-width: 1180px){.course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.paper-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.hero-panel{grid-template-columns:minmax(0,1fr) 220px}.mascot-portrait{transform:scale(.88);transform-origin:bottom center}}@media (max-width: 960px){.app-main{margin-left:0}.mobile-menu-trigger{display:grid}.shell-sidebar{transform:translate(-105%);transition:transform .18s ease}.shell-sidebar.is-open{transform:translate(0);box-shadow:10px 0 #07081073}.sidebar-close{display:grid;place-items:center;width:30px;height:30px;cursor:pointer}.shell-backdrop.is-visible{position:fixed;z-index:29;top:0;right:0;bottom:0;left:0;display:block;background:#05060cb3}.app-topbar{padding-left:70px}.quiz-layout{grid-template-columns:minmax(0,1fr)}.quiz-side{grid-template-columns:minmax(0,1fr) minmax(220px,.65fr)}}@media (max-width: 720px){.content-wrap{padding:20px 16px 42px}.app-topbar{min-height:64px;padding:11px 16px 11px 67px}.topbar-tools{gap:0}.syllabus-label{display:none}.hero-panel{grid-template-columns:minmax(0,1fr) 120px;min-height:350px;padding:24px 20px}.hero-copy h1{font-size:31px}.hero-copy p{max-width:420px;font-size:13px}.mascot-portrait{width:150px;height:190px;transform:scale(.78);transform-origin:bottom right}.speech-bubble{left:-106px;width:165px}.stat-strip,.home-grid,.vault-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.home-grid{gap:12px}.manga-panel{padding:17px}.stat-chip{grid-template-columns:auto 1fr}.stat-chip-tail{grid-column:2;text-align:left}.page-banner{min-height:155px;padding:22px 20px}.page-banner h1{font-size:25px}.page-banner .mascot-small{display:none}.paper-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.result-banner{padding:22px 20px}.result-score strong{font-size:42px}.training-row{grid-template-columns:35px minmax(0,1fr)}.training-actions{grid-column:2;justify-content:flex-start}}@media (max-width: 520px){.content-wrap{padding-right:12px;padding-left:12px}.hero-panel{display:block;min-height:445px;padding:23px 18px}.hero-copy{max-width:100%}.hero-copy h1{max-width:100%;margin-top:17px;font-size:28px}.hero-copy p{max-width:100%}.hero-actions{align-items:stretch;flex-direction:column}.hero-actions .button{width:100%}.hero-meta{align-items:flex-start;flex-direction:column;gap:7px}.mascot{position:absolute;right:4px;bottom:-16px;width:144px;height:150px}.mascot-portrait{transform:scale(.7);transform-origin:bottom right}.speech-bubble{top:0;left:-95px;width:153px;padding:9px 10px}.speech-bubble strong{font-size:11px}.stat-strip,.home-grid,.course-grid,.paper-grid,.vault-grid,.stats-grid-v2,.result-stats{grid-template-columns:1fr}.stat-chip{grid-template-columns:auto 1fr auto}.stat-chip-tail{grid-column:auto;text-align:right}.route-footer,.vault-actions,.result-banner,.page-banner,.unlock-banner{align-items:flex-start;flex-direction:column}.page-banner .review-icon,.practice-mark{display:none}.reader-topbar,.quiz-topline{align-items:flex-start;flex-wrap:wrap}.reader-topbar .reader-progress{order:3;width:100%}.reader-article{box-shadow:4px 4px 0 var(--coral-dark)}.reader-header{padding:25px 19px}.reader-header h1{font-size:28px}.reader-body{padding:20px 18px 28px}.reader-section-title h2{font-size:19px}.reader-section p{font-size:13px}.reader-footer{padding:18px}.checkpoint-actions .button{width:100%}.reader-nav{display:grid;grid-template-columns:1fr 1fr}.reader-nav .button{width:100%}.paper-card{min-height:270px}.question-stage{padding:18px 14px}.question-head{display:grid}.question-stage h1{margin-top:22px;font-size:20px;line-height:1.55}.answer-option{grid-template-columns:29px minmax(0,1fr) 20px;padding:8px 9px;font-size:12px}.quiz-actions{display:grid;grid-template-columns:38px 1fr 1fr}.quiz-actions .icon-button{margin-right:0}.quiz-actions .button{min-width:0;padding-right:8px;padding-left:8px}.quiz-side{grid-template-columns:1fr}.review-panel,.stats-panel,.vault-list{padding:17px 14px}.review-item{grid-template-columns:27px 21px minmax(0,1fr) auto;gap:7px;padding:9px 7px}.review-text strong{white-space:normal}.review-explanation{grid-column:3 / -1}.wrong-item{grid-template-columns:28px minmax(0,1fr)}.wrong-actions{grid-column:2}.radar-row{grid-template-columns:minmax(90px,.7fr) minmax(80px,1fr) 35px;gap:8px;font-size:10px}.paper-log>div{grid-template-columns:1fr auto}.paper-log>div>small{grid-column:1 / -1}.training-row{grid-template-columns:28px minmax(0,1fr);gap:9px;padding:12px 11px}.training-copy p{white-space:normal}.training-actions{gap:8px}.training-actions .button{min-height:38px;padding:7px 10px;font-size:11px}.toast-v2{right:12px;bottom:12px;left:12px;max-width:none}}
