:root{
  color-scheme:dark;
  --ink:#06111d;
  --navy:#071523;
  --navy-2:#0b2030;
  --panel:#102b3a;
  --panel-2:#153747;
  --line:rgba(229,241,235,.14);
  --cream:#f5f1df;
  --muted:#a9bdba;
  --green:#9eb46b;
  --green-dark:#61753e;
  --teal:#65c8ba;
  --amber:#f2b84b;
  --red:#ff776d;
  --blue:#79b8ff;
  --shadow:0 24px 64px rgba(0,0,0,.28);
  --radius:22px;
  --safe-top:env(safe-area-inset-top,0px);
  --safe-left:env(safe-area-inset-left,0px);
  --safe-right:env(safe-area-inset-right,0px);
  --safe-bottom:env(safe-area-inset-bottom,0px);
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  background:var(--navy);
  color:var(--cream)
}
*{box-sizing:border-box}
html{min-height:100%;background:var(--navy);scroll-behavior:smooth}
body{min-height:100%;margin:0;background:
  radial-gradient(circle at 12% -5%,rgba(101,200,186,.13),transparent 30rem),
  radial-gradient(circle at 100% 10%,rgba(242,184,75,.08),transparent 26rem),var(--navy);color:var(--cream)}
body::before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.15;background-image:linear-gradient(rgba(255,255,255,.026) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.026) 1px,transparent 1px);background-size:32px 32px;mask-image:linear-gradient(to bottom,#000,transparent 70%)}
button,input,select{font:inherit}
button,a{-webkit-tap-highlight-color:transparent}
button{color:inherit}
a{color:inherit}
img{max-width:100%;display:block}
[hidden]{display:none!important}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:fixed;z-index:1000;left:12px;top:10px;padding:10px 14px;border-radius:10px;background:var(--cream);color:var(--ink);transform:translateY(-150%)}
.skip-link:focus{transform:none}
:focus-visible{outline:3px solid var(--amber);outline-offset:3px}

.app-header{position:sticky;top:0;z-index:40;height:calc(72px + var(--safe-top));display:flex;align-items:center;justify-content:space-between;padding:calc(10px + var(--safe-top)) max(16px,var(--safe-right)) 10px max(16px,var(--safe-left));border-bottom:1px solid var(--line);background:rgba(7,21,35,.88);backdrop-filter:blur(18px)}
.brand{display:flex;align-items:center;gap:10px;min-width:0;text-decoration:none}
.brand img{width:46px;height:46px;border-radius:14px;box-shadow:0 7px 18px rgba(0,0,0,.32)}
.brand span{display:flex;flex-direction:column;min-width:0}
.brand b{font-size:1rem;letter-spacing:.01em;white-space:nowrap}
.brand small{font-size:.66rem;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);white-space:nowrap}
.header-actions{display:flex;align-items:center;gap:8px}
.header-button,.avatar-button,.score-button{min-width:44px;min-height:44px;border:1px solid var(--line);background:rgba(255,255,255,.045);border-radius:14px;cursor:pointer}
.header-button{display:flex;gap:7px;align-items:center;justify-content:center;padding:0 12px}
.header-button span{font-size:1.4rem;line-height:1}.header-button em{font-size:.76rem;font-style:normal;color:var(--muted)}
.avatar-button{font-weight:900;background:linear-gradient(145deg,var(--green),var(--green-dark));color:#07130b;border:0}
.score-button{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:4px 11px;line-height:1}
.score-button span{font-size:.88rem;font-weight:900;color:var(--amber)}.score-button small{margin-top:3px;font-size:.65rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.status-banner{position:sticky;z-index:35;top:calc(72px + var(--safe-top));padding:8px 18px;text-align:center;font-size:.75rem;font-weight:700;background:#f2b84b;color:#17200f}

.app-layout{width:100%;max-width:1440px;margin:auto}
.primary-nav{position:fixed;left:0;right:0;bottom:0;z-index:50;display:grid;grid-template-columns:repeat(6,1fr);padding:7px max(8px,var(--safe-right)) calc(7px + var(--safe-bottom)) max(8px,var(--safe-left));border-top:1px solid var(--line);background:rgba(6,17,29,.94);backdrop-filter:blur(18px)}
.primary-nav a{display:flex;min-width:0;min-height:51px;flex-direction:column;align-items:center;justify-content:center;gap:3px;border-radius:12px;text-decoration:none;color:#849c9b;font-size:.65rem;font-weight:750}
.primary-nav a span{font-size:1.25rem;line-height:1}.primary-nav a b{font-weight:750}
.primary-nav a[aria-current="page"]{background:rgba(158,180,107,.13);color:var(--cream)}
.primary-nav a[aria-current="page"] span{color:var(--green)}
#appMain{min-height:calc(100vh - 72px - var(--safe-top));min-height:calc(100dvh - 72px - var(--safe-top));padding:18px 16px calc(94px + var(--safe-bottom));outline:none}
.page{width:min(100%,1080px);margin:0 auto;animation:page-in .24s ease both}
@keyframes page-in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--teal);font-size:.68rem;font-weight:850;letter-spacing:.16em;text-transform:uppercase}
.eyebrow::before{content:"";width:16px;height:2px;background:currentColor}
.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin:6px 0 22px}
.page-head h1,.hero-copy h1{margin:8px 0 0;font-size:clamp(2rem,9vw,4.5rem);line-height:.94;letter-spacing:-.052em}
.page-head p{max-width:580px;margin:10px 0 0;color:var(--muted);line-height:1.62}
.back-link{display:inline-flex;min-height:44px;align-items:center;gap:8px;margin-bottom:10px;text-decoration:none;color:var(--muted);font-size:.82rem;font-weight:750}

.hero{position:relative;overflow:hidden;display:grid;gap:20px;padding:24px;border:1px solid var(--line);border-radius:30px;background:linear-gradient(135deg,rgba(21,55,71,.96),rgba(9,31,44,.96));box-shadow:var(--shadow)}
.hero::after{content:"";position:absolute;width:230px;height:230px;border-radius:50%;right:-90px;top:-100px;border:42px solid rgba(158,180,107,.09)}
.hero-copy{position:relative;z-index:1}
.hero-copy h1 em{display:block;color:var(--green);font-style:normal}
.hero-copy>p{max-width:640px;color:#c3d3cf;line-height:1.68}
.hero-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.button{display:inline-flex;min-height:46px;align-items:center;justify-content:center;gap:9px;padding:0 16px;border:1px solid var(--line);border-radius:13px;background:rgba(255,255,255,.055);color:var(--cream);font-weight:800;text-decoration:none;cursor:pointer}
.button.primary{border-color:transparent;background:var(--green);color:#10190d}
.button.secondary{background:var(--teal);border-color:transparent;color:#061713}
.button.danger{color:#ffd7d3;border-color:rgba(255,119,109,.4)}
.button.ghost{background:transparent}
.button.small{min-height:44px;padding:0 13px;font-size:.78rem}
.button:disabled{cursor:not-allowed;opacity:.5}

.hero-meter{position:relative;z-index:1;padding:18px;border:1px solid rgba(255,255,255,.13);border-radius:22px;background:rgba(4,16,27,.45)}
.meter-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.meter-top span{color:var(--muted);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase}.meter-top strong{font-size:2.5rem;line-height:1;color:var(--amber)}
.meter-bar{height:9px;margin:18px 0 8px;overflow:hidden;border-radius:999px;background:rgba(255,255,255,.08)}
.meter-bar i{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--green),var(--teal));transition:width .35s ease}
.meter-foot{display:flex;justify-content:space-between;color:var(--muted);font-size:.72rem}

.stats-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:14px 0 24px}
.stat-card{min-height:105px;padding:16px;border:1px solid var(--line);border-radius:18px;background:rgba(16,43,58,.67)}
.stat-card small{display:block;color:var(--muted);font-size:.66rem;letter-spacing:.1em;text-transform:uppercase}.stat-card strong{display:block;margin-top:8px;font-size:1.55rem}.stat-card span{display:block;margin-top:3px;color:var(--muted);font-size:.72rem}

.section-head{display:flex;align-items:end;justify-content:space-between;gap:14px;margin:30px 0 14px}
.section-head h2{margin:3px 0 0;font-size:1.42rem;letter-spacing:-.025em}.section-head p{margin:3px 0 0;color:var(--muted);font-size:.82rem}
.section-head a{min-height:44px;display:flex;align-items:center;color:var(--teal);font-size:.78rem;font-weight:800;text-decoration:none}
.card-grid,.module-grid{display:grid;gap:12px}
.module-card{position:relative;overflow:hidden;display:flex;min-height:182px;flex-direction:column;padding:19px;border:1px solid var(--line);border-radius:22px;background:linear-gradient(145deg,rgba(21,55,71,.9),rgba(10,31,43,.92));text-decoration:none;transition:transform .18s ease,border-color .18s ease}
.module-card:hover{transform:translateY(-2px);border-color:rgba(158,180,107,.4)}
.module-card::after{content:attr(data-number);position:absolute;right:12px;bottom:-20px;font-size:6rem;font-weight:950;color:rgba(255,255,255,.035)}
.module-icon{display:grid;width:42px;height:42px;place-items:center;border-radius:13px;background:color-mix(in srgb,var(--module-color,var(--green)) 18%,transparent);color:var(--module-color,var(--green));font-size:1.35rem}
.module-card h3{margin:17px 0 5px;font-size:1.18rem}.module-card p{margin:0;color:var(--muted);font-size:.82rem;line-height:1.5}
.module-meta{display:flex;align-items:center;gap:8px;margin-top:auto;padding-top:16px;color:#bfd0ca;font-size:.68rem}.module-meta b{color:var(--module-color,var(--green))}
.mini-progress{height:5px;margin-top:9px;border-radius:99px;background:rgba(255,255,255,.08);overflow:hidden}.mini-progress i{display:block;height:100%;background:var(--module-color,var(--green))}

.resume-card{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:14px;padding:16px;border:1px solid var(--line);border-radius:19px;background:rgba(255,255,255,.04);text-decoration:none}
.resume-card .resume-icon{display:grid;width:46px;height:46px;place-items:center;border-radius:14px;background:rgba(101,200,186,.12);color:var(--teal);font-size:1.3rem}.resume-card small{display:block;color:var(--muted);font-size:.68rem;text-transform:uppercase;letter-spacing:.08em}.resume-card b{display:block;margin-top:4px}.resume-card>span:last-child{color:var(--teal);font-size:1.3rem}

.filter-row{display:flex;gap:8px;overflow:auto;margin:0 -16px 16px;padding:0 16px 3px;scrollbar-width:none}.filter-row::-webkit-scrollbar{display:none}
.filter-row button{flex:0 0 auto;min-height:44px;padding:0 14px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.035);color:var(--muted);font-size:.75rem;font-weight:800;cursor:pointer}.filter-row button.active{background:var(--cream);color:var(--ink);border-color:transparent}

.lesson-list{display:grid;gap:10px}.lesson-row{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:13px;padding:15px;border:1px solid var(--line);border-radius:18px;background:rgba(15,43,57,.6);text-decoration:none}
.lesson-row.done{border-color:rgba(158,180,107,.28)}.lesson-index{display:grid;width:38px;height:38px;place-items:center;border-radius:12px;background:rgba(255,255,255,.055);font-weight:900;color:var(--muted)}.lesson-row.done .lesson-index{background:rgba(158,180,107,.16);color:var(--green)}
.lesson-row h3{margin:0;font-size:.98rem}.lesson-row p{margin:5px 0 0;color:var(--muted);font-size:.75rem;line-height:1.38}.lesson-row>span:last-child{color:var(--muted)}

.lesson-hero{position:relative;overflow:hidden;margin:-18px -16px 0;padding:30px 18px 26px;border-bottom:1px solid var(--line);background:linear-gradient(140deg,rgba(21,55,71,.97),rgba(7,21,35,.97))}
.lesson-hero-inner{width:min(100%,850px);margin:auto}.lesson-hero h1{margin:12px 0 10px;font-size:clamp(2rem,10vw,4rem);line-height:1;letter-spacing:-.045em}.lesson-hero p{max-width:710px;margin:0;color:#c2d2ce;line-height:1.62}.lesson-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}.lesson-meta span{padding:7px 10px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:.68rem}
.lesson-body{width:min(100%,760px);margin:0 auto;padding:26px 0}.lesson-body article{margin:0 0 30px}.lesson-body h2{margin:0 0 12px;font-size:1.35rem;letter-spacing:-.025em}.lesson-body h3{margin:22px 0 8px;font-size:1rem}.lesson-body p{margin:0 0 14px;color:#ccdad6;line-height:1.78}.lesson-body ul,.lesson-body ol{margin:10px 0 18px;padding-left:22px;color:#c9d7d2;line-height:1.7}.lesson-body li+li{margin-top:7px}
.lesson-media{margin:6px 0 28px;overflow:hidden;border:1px solid var(--line);border-radius:22px;background:#07101a}.lesson-media img{width:100%;aspect-ratio:16/9;object-fit:cover}.lesson-media figcaption{padding:10px 13px;color:var(--muted);font-size:.68rem;line-height:1.45}
.callout{margin:20px 0;padding:17px;border-left:3px solid var(--amber);border-radius:0 16px 16px 0;background:rgba(242,184,75,.08)}.callout b{display:block;color:var(--amber);font-size:.72rem;letter-spacing:.11em;text-transform:uppercase}.callout p{margin:7px 0 0!important;font-size:.88rem}
.takeaway{padding:20px;border:1px solid rgba(101,200,186,.24);border-radius:20px;background:rgba(101,200,186,.065)}.takeaway h2{color:var(--teal)}
.lesson-terms{margin-top:18px;padding:18px;border:1px solid var(--line);border-radius:20px;background:rgba(255,255,255,.03)}.lesson-terms div{display:flex;flex-wrap:wrap;gap:8px}.lesson-terms a{display:inline-flex;min-height:44px;align-items:center;padding:0 12px;border:1px solid var(--line);border-radius:11px;color:var(--teal);text-decoration:none;font-size:.8rem;font-weight:750}
.lesson-footer{display:flex;flex-direction:column;gap:12px;margin-top:32px;padding-top:24px;border-top:1px solid var(--line)}
.source-links{display:flex;flex-wrap:wrap;gap:8px}.source-links a{display:inline-flex;min-height:44px;align-items:center;padding:0 11px;border:1px solid var(--line);border-radius:10px;color:var(--muted);font-size:.76rem;text-decoration:none}.source-links a:hover{color:var(--cream)}

.rank-tabs{display:flex;gap:8px;overflow:auto;margin:0 -16px 16px;padding:0 16px 4px;scrollbar-width:none}.rank-tabs button{flex:0 0 auto;min-height:44px;padding:0 15px;border:1px solid var(--line);border-radius:13px;background:rgba(255,255,255,.04);color:var(--muted);font-weight:800;cursor:pointer}.rank-tabs button.active{border-color:var(--branch-color,var(--green));color:var(--cream);background:color-mix(in srgb,var(--branch-color,var(--green)) 15%,transparent)}
.rank-intro{margin-bottom:14px;padding:17px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.035);color:var(--muted);line-height:1.55}
.rank-ladder{display:grid;gap:8px}.rank-row{display:grid;grid-template-columns:50px 1fr auto;align-items:center;gap:12px;min-height:70px;padding:11px 13px;border:1px solid var(--line);border-radius:16px;background:rgba(14,41,55,.66)}
.rank-row h3{margin:0;font-size:.92rem}.rank-row p{margin:4px 0 0;color:var(--muted);font-size:.76rem;line-height:1.42}.rank-favorite{display:grid;width:44px;height:44px;place-items:center;border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.035);color:var(--amber);font-size:1.15rem;cursor:pointer}
.rank-mark{position:relative;display:grid;width:46px;height:46px;place-items:center;border:1px solid color-mix(in srgb,var(--branch-color,var(--green)) 45%,transparent);border-radius:12px;background:color-mix(in srgb,var(--branch-color,var(--green)) 12%,transparent)}
.rank-mark i{position:relative;display:block;width:25px;height:5px;border-radius:8px;background:var(--branch-color,var(--green));box-shadow:0 var(--rank-gap,7px) 0 color-mix(in srgb,var(--branch-color,var(--green)) 72%,white),0 calc(var(--rank-gap,7px) * -1) 0 color-mix(in srgb,var(--branch-color,var(--green)) 72%,white)}
.rank-mark.officer i{width:10px;height:10px;transform:rotate(45deg);box-shadow:8px 8px 0 var(--branch-color,var(--green)),-8px -8px 0 var(--branch-color,var(--green))}.rank-mark.general i{width:22px;height:22px;background:conic-gradient(from 45deg,var(--amber),var(--branch-color,var(--green)),var(--amber));clip-path:polygon(50% 0,61% 34%,98% 35%,68% 56%,79% 93%,50% 70%,21% 93%,32% 56%,2% 35%,39% 34%);box-shadow:none}

.practice-grid{display:grid;gap:12px}.practice-option{position:relative;overflow:hidden;min-height:190px;padding:20px;border:1px solid var(--line);border-radius:22px;background:linear-gradient(145deg,rgba(21,55,71,.94),rgba(8,27,40,.94));text-align:left;cursor:pointer}.practice-option>span{font-size:2rem}.practice-option h2{margin:20px 0 6px}.practice-option p{max-width:420px;margin:0;color:var(--muted);line-height:1.5}.practice-option b{position:absolute;right:18px;bottom:17px;color:var(--teal)}
.practice-stage{width:min(100%,720px);margin:auto}.practice-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}.practice-toolbar span{color:var(--muted);font-size:.76rem}.practice-progress{height:6px;margin-bottom:20px;overflow:hidden;border-radius:99px;background:rgba(255,255,255,.08)}.practice-progress i{display:block;height:100%;background:linear-gradient(90deg,var(--green),var(--teal))}
.flashcard{min-height:330px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:28px;border:1px solid var(--line);border-radius:28px;background:radial-gradient(circle at 50% 0,rgba(101,200,186,.12),transparent 60%),rgba(15,43,57,.85);box-shadow:var(--shadow);text-align:center}
.flashcard small{color:var(--teal);font-size:.7rem;font-weight:850;letter-spacing:.12em;text-transform:uppercase}.flashcard h2{margin:24px 0 12px;font-size:clamp(1.55rem,7vw,2.6rem)}.flashcard p{margin:0;color:#c9d8d4;line-height:1.65}.flashcard-answer{margin-top:20px;padding-top:20px;border-top:1px solid var(--line)}
.grade-row{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:13px}.grade-row button{min-height:52px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.04);font-size:.76rem;font-weight:850;cursor:pointer}.grade-row button[data-grade="again"]{color:#ffaaa2}.grade-row button[data-grade="hard"]{color:var(--amber)}.grade-row button[data-grade="good"]{color:var(--teal)}
.quiz-card{padding:22px;border:1px solid var(--line);border-radius:25px;background:rgba(15,43,57,.82);box-shadow:var(--shadow)}.quiz-card fieldset{margin:0;padding:0;border:0}.quiz-card legend{font-size:1.25rem;font-weight:850;line-height:1.35}.answer-list{display:grid;gap:9px;margin-top:20px}.answer-list button{min-height:54px;padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.035);text-align:left;cursor:pointer}.answer-list button:hover{border-color:rgba(101,200,186,.45)}.answer-list button.correct{border-color:var(--teal);background:rgba(101,200,186,.12)}.answer-list button.wrong{border-color:var(--red);background:rgba(255,119,109,.1)}.answer-feedback{margin-top:15px;padding:15px;border-radius:14px;background:rgba(255,255,255,.045);color:#ccdad6;line-height:1.55}
.result-card{text-align:center;padding:32px 22px;border:1px solid var(--line);border-radius:28px;background:rgba(15,43,57,.84)}.result-ring{display:grid;width:130px;height:130px;margin:0 auto 22px;place-items:center;border-radius:50%;background:conic-gradient(var(--teal) var(--score-angle),rgba(255,255,255,.08) 0);position:relative}.result-ring::before{content:"";position:absolute;inset:10px;border-radius:50%;background:var(--panel)}.result-ring strong{position:relative;font-size:1.9rem}.result-card h1{margin:0}.result-card p{color:var(--muted);line-height:1.55}

.leaderboard-summary{display:grid;gap:12px;margin-bottom:18px}.viewer-card{padding:21px;border:1px solid rgba(242,184,75,.26);border-radius:22px;background:linear-gradient(135deg,rgba(242,184,75,.1),rgba(21,55,71,.7))}.viewer-card small{color:var(--amber);letter-spacing:.12em;text-transform:uppercase}.viewer-card strong{display:block;margin-top:8px;font-size:2rem}.viewer-card p{margin:4px 0 0;color:var(--muted)}
.leaderboard{display:grid;gap:8px}.leader-row{display:grid;grid-template-columns:38px 42px 1fr auto;align-items:center;gap:10px;padding:11px 13px;border:1px solid var(--line);border-radius:16px;background:rgba(14,41,55,.65)}.leader-row.me{border-color:rgba(242,184,75,.4);background:rgba(242,184,75,.075)}.leader-rank{font-weight:900;color:var(--muted)}.leader-avatar{display:grid;width:40px;height:40px;place-items:center;border-radius:13px;background:linear-gradient(145deg,var(--green),var(--green-dark));color:#0c160b;font-weight:900}.leader-row h3{margin:0;font-size:.9rem}.leader-row p{margin:3px 0 0;color:var(--muted);font-size:.68rem}.leader-points{text-align:right}.leader-points b{display:block;color:var(--amber)}.leader-points small{color:var(--muted);font-size:.6rem}.load-more{width:100%;margin-top:12px}
.leaderboard-empty,.empty-state{padding:34px 20px;border:1px dashed rgba(255,255,255,.17);border-radius:20px;text-align:center;color:var(--muted)}

.checklist{display:grid;gap:8px}.check-item{display:grid;grid-template-columns:auto 1fr;align-items:start;gap:11px;padding:13px;border:1px solid var(--line);border-radius:15px;background:rgba(255,255,255,.032);cursor:pointer}.check-item input{width:22px;height:22px;margin:0;accent-color:var(--green)}.check-item b{font-size:.86rem}.check-item small{display:block;margin-top:4px;color:var(--muted);line-height:1.4}.checklist-more{margin-top:9px}.checklist-more summary{display:flex;min-height:46px;align-items:center;justify-content:space-between;padding:0 14px;border:1px solid var(--line);border-radius:14px;color:var(--teal);font-size:.78rem;font-weight:850;cursor:pointer;list-style:none}.checklist-more summary::-webkit-details-marker{display:none}.checklist-more[open] summary{margin-bottom:8px;background:rgba(101,200,186,.07)}

.favorite-list{display:grid;gap:9px}.favorite-row{display:grid;grid-template-columns:minmax(0,1fr) 48px;align-items:stretch;gap:8px}.favorite-row>a{display:grid;grid-template-columns:42px minmax(0,1fr) auto;align-items:center;gap:12px;min-width:0;padding:13px;border:1px solid var(--line);border-radius:17px;background:rgba(15,43,57,.66);text-decoration:none}.favorite-row>a>span:first-child{display:grid;width:40px;height:40px;place-items:center;border-radius:12px;background:rgba(101,200,186,.11);color:var(--teal);font-weight:900}.favorite-row h2{margin:0;font-size:.94rem}.favorite-row p{margin:4px 0 0;color:var(--muted);font-size:.7rem}.favorite-row>a>span:last-child{color:var(--muted)}.favorite-row>button{min-width:48px;border:1px solid var(--line);border-radius:15px;background:rgba(242,184,75,.08);color:var(--amber);font-size:1.1rem;cursor:pointer}

.sheet{width:100%;height:100%;height:100dvh;max-width:none;max-height:none;margin:0;padding:0;border:0;background:rgba(2,9,15,.66);color:var(--cream);backdrop-filter:blur(8px)}
.sheet::backdrop{background:rgba(2,9,15,.66);backdrop-filter:blur(8px)}
.sheet-card{position:absolute;left:0;right:0;bottom:0;max-height:min(92vh,850px);max-height:min(92dvh,850px);overflow:auto;overscroll-behavior:contain;padding:20px 16px calc(24px + var(--safe-bottom));border:1px solid var(--line);border-radius:26px 26px 0 0;background:#0b2130;box-shadow:0 -22px 70px rgba(0,0,0,.42)}
.sheet-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:18px}.sheet-head h2{margin:6px 0 0;font-size:1.45rem}.close-button{display:grid;flex:0 0 auto;width:44px;height:44px;place-items:center;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.04);font-size:1.5rem;cursor:pointer}
.search-field{display:flex;align-items:center;gap:10px;padding:0 14px;border:1px solid var(--line);border-radius:15px;background:rgba(255,255,255,.045)}.search-field input{width:100%;height:52px;border:0;outline:0;background:transparent;color:var(--cream)}.search-field input::placeholder{color:#718a89}
.search-filters{display:flex;gap:7px;overflow:auto;margin:13px 0}.search-filters button{min-height:44px;padding:0 12px;border:1px solid var(--line);border-radius:999px;background:transparent;color:var(--muted);font-size:.75rem;font-weight:800;cursor:pointer}.search-filters button.active{background:var(--cream);color:var(--ink)}
.search-results{display:grid;gap:8px;min-height:150px}.search-result{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:11px;padding:13px;border:1px solid var(--line);border-radius:15px;background:rgba(255,255,255,.032);text-decoration:none}.search-result>span:first-child{display:grid;width:37px;height:37px;place-items:center;border-radius:11px;background:rgba(101,200,186,.1);color:var(--teal)}.search-result h3{margin:0;font-size:.87rem}.search-result p{margin:4px 0 0;color:var(--muted);font-size:.7rem}.search-result>span:last-child{color:var(--muted)}
.account-intro{display:grid;grid-template-columns:56px 1fr;gap:13px;align-items:center;padding:15px;border:1px solid var(--line);border-radius:17px;background:rgba(255,255,255,.035)}.account-avatar{display:grid;width:54px;height:54px;place-items:center;border-radius:17px;background:linear-gradient(145deg,var(--green),var(--green-dark));color:#0c170b;font-size:1.3rem;font-weight:900}.account-intro h3{margin:0}.account-intro p{margin:4px 0 0;color:var(--muted);font-size:.76rem}
.account-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin:11px 0}.account-stats div{padding:12px 8px;border:1px solid var(--line);border-radius:14px;text-align:center;background:rgba(255,255,255,.025)}.account-stats b{display:block}.account-stats small{display:block;margin-top:3px;color:var(--muted);font-size:.58rem;text-transform:uppercase}
.auth-tabs{display:grid;grid-template-columns:1fr 1fr;gap:6px;padding:5px;border-radius:15px;background:rgba(255,255,255,.04)}.auth-tabs button{min-height:42px;border:0;border-radius:11px;background:transparent;color:var(--muted);font-weight:800;cursor:pointer}.auth-tabs button.active{background:var(--cream);color:var(--ink)}
.auth-form{display:grid;gap:12px;margin-top:15px}.auth-form label{display:grid;gap:6px}.auth-form label>span{font-size:.7rem;font-weight:800;color:var(--muted)}.auth-form input{width:100%;height:50px;padding:0 13px;border:1px solid var(--line);border-radius:13px;background:rgba(255,255,255,.045);color:var(--cream);outline:0}.auth-form input:focus{border-color:var(--teal)}.form-help{margin:0;color:var(--muted);font-size:.68rem;line-height:1.45}.form-error{margin:0;padding:11px;border-radius:12px;background:rgba(255,119,109,.1);color:#ffd1cd;font-size:.75rem}
.account-actions{display:grid;gap:8px;margin-top:15px}.sync-note{margin:12px 0 0;color:var(--muted);font-size:.72rem;line-height:1.5}
.source-list{display:grid;gap:9px}.source-item{padding:14px;border:1px solid var(--line);border-radius:15px;background:rgba(255,255,255,.03)}.source-item b{display:block;font-size:.85rem}.source-item p{margin:5px 0 9px;color:var(--muted);font-size:.72rem;line-height:1.45}.source-item a{font-size:.7rem;color:var(--teal)}
.notice{padding:14px;border:1px solid rgba(242,184,75,.24);border-radius:15px;background:rgba(242,184,75,.07);color:#ddd5b6;font-size:.76rem;line-height:1.55}
.toast-region{position:fixed;z-index:100;left:12px;right:12px;bottom:calc(79px + var(--safe-bottom));display:grid;gap:8px;pointer-events:none}.toast{margin:auto;padding:11px 15px;border:1px solid var(--line);border-radius:13px;background:#e9eddc;color:#122017;box-shadow:var(--shadow);font-size:.76rem;font-weight:800;animation:toast-in .2s ease both}@keyframes toast-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.skeleton{height:70px;border-radius:16px;background:linear-gradient(90deg,rgba(255,255,255,.03),rgba(255,255,255,.08),rgba(255,255,255,.03));background-size:200% 100%;animation:shimmer 1.2s infinite}@keyframes shimmer{to{background-position:-200% 0}}

@media (min-width:600px){
  #appMain{padding-left:24px;padding-right:24px}.hero{grid-template-columns:minmax(0,1.65fr) minmax(260px,.75fr);align-items:end;padding:34px}.stats-grid{grid-template-columns:repeat(4,1fr)}.module-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.practice-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.leaderboard-summary{grid-template-columns:1fr 1fr}.sheet-card{left:50%;right:auto;width:min(620px,calc(100% - 32px));bottom:16px;transform:translateX(-50%);border-radius:26px;padding:24px}.toast-region{bottom:calc(86px + var(--safe-bottom))}.lesson-hero{margin-left:-24px;margin-right:-24px;padding-left:24px;padding-right:24px}
}
@media (min-width:960px){
  .app-header{padding-left:max(28px,var(--safe-left));padding-right:max(28px,var(--safe-right))}.app-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:0}.primary-nav{position:sticky;top:calc(72px + var(--safe-top));left:auto;right:auto;bottom:auto;height:calc(100vh - 72px - var(--safe-top));height:calc(100dvh - 72px - var(--safe-top));display:flex;flex-direction:column;align-items:stretch;padding:24px 15px;border-top:0;border-right:1px solid var(--line);background:rgba(7,21,35,.52);backdrop-filter:none}.primary-nav a{min-height:54px;flex-direction:row;justify-content:flex-start;gap:13px;padding:0 15px;font-size:.82rem}.primary-nav a span{width:24px;text-align:center}.primary-nav a[aria-current="page"]{background:rgba(158,180,107,.13)}#appMain{padding:34px 34px 60px}.module-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.lesson-hero{margin:-34px -34px 0;padding:42px 34px 34px}.toast-region{left:auto;right:max(24px,var(--safe-right));bottom:24px;width:360px}.header-button em{display:inline}.sheet-card{bottom:24px}
}
@media (max-width:430px){
  .brand small{display:none}.brand img{width:42px;height:42px}.header-button{width:44px;padding:0}.header-button em{display:none}.score-button{padding:4px 8px}.primary-nav a{font-size:.58rem}.page-head{display:block}.page-head h1{font-size:2.4rem}.rank-row{grid-template-columns:46px 1fr 44px}.hero{padding:20px}.hero-copy h1{font-size:2.55rem}.hero-actions .button{flex:1}.grade-row button{font-size:.72rem;padding:4px}.leader-row{grid-template-columns:32px 38px 1fr auto;padding:10px}.leader-points b{font-size:.85rem}.lesson-body p{line-height:1.7}
}
@media (max-width:360px){.app-header{padding-left:max(10px,var(--safe-left));padding-right:max(10px,var(--safe-right))}.brand span{display:none}.header-actions{gap:5px}.score-button{min-width:42px}.primary-nav a{font-size:.54rem}.page-head h1,.hero-copy h1{font-size:2.15rem}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}}
@media (forced-colors:active){.meter-bar i,.mini-progress i{forced-color-adjust:none;background:Highlight}.module-card,.hero,.rank-row,.lesson-row{border:1px solid CanvasText}}