:root{
  --navy:#052541;
  --navy-2:#073454;
  --navy-3:#0c4366;
  --ink:#10253a;
  --cream:#f4ead3;
  --paper:#fff9ec;
  --paper-2:#efe1c2;
  --gold:#e3b353;
  --gold-2:#f2ce7b;
  --burgundy:#6f2733;
  --green:#4bb77a;
  --red:#d16a65;
  --muted:#b8c7d2;
  --white:#fffdf6;
  --shadow:0 18px 45px rgba(0,0,0,.22);
  --shadow-soft:0 8px 22px rgba(0,0,0,.16);
  --radius:22px;
  --safe-bottom:max(14px, env(safe-area-inset-bottom));
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "Noto Sans", "Arial Unicode MS", sans-serif;
}
*{box-sizing:border-box}
html{background:var(--navy);min-height:100%;-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;background:linear-gradient(180deg,#031d34 0%,var(--navy) 32%,#062d4b 100%);color:var(--white);overflow-x:hidden}
button,input{font:inherit}
button{touch-action:manipulation}
button:focus-visible,a:focus-visible{outline:3px solid var(--gold-2);outline-offset:3px}
.app-shell{min-height:100vh;max-width:760px;margin:0 auto;padding-bottom:calc(82px + var(--safe-bottom));position:relative}
.screen{padding:0 18px 28px;animation:screenIn .22s ease-out}
@keyframes screenIn{from{opacity:.3;transform:translateY(4px)}to{opacity:1;transform:none}}
.topbar{display:flex;align-items:center;gap:12px;padding:calc(14px + env(safe-area-inset-top)) 18px 12px;position:sticky;top:0;z-index:30;background:linear-gradient(180deg,rgba(3,29,52,.98),rgba(3,29,52,.89) 70%,rgba(3,29,52,0));backdrop-filter:blur(10px)}
.brand-mini{display:flex;align-items:center;gap:10px;min-width:0;flex:1}.brand-mark{width:39px;height:39px;border:1px solid rgba(227,179,83,.45);border-radius:50%;display:grid;place-items:center;color:var(--gold);font-size:22px;flex:0 0 auto}.brand-title{font-family:Georgia,"Times New Roman",serif;font-size:18px;letter-spacing:.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.brand-sub{font-size:11px;color:var(--muted);margin-top:1px}
.icon-btn{width:44px;height:44px;border-radius:14px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.07);color:var(--white);display:grid;place-items:center;font-size:20px}
.hero{margin:0 -18px 18px;min-height:340px;position:relative;overflow:hidden;border-bottom:1px solid rgba(227,179,83,.3);background:radial-gradient(circle at 82% 22%,rgba(238,193,99,.2),transparent 28%),linear-gradient(145deg,#041f37 0%,#073655 70%,#0c4c70 100%)}
.hero-art{position:absolute;right:-4px;bottom:0;width:47%;height:100%;object-fit:cover;object-position:center top;mask-image:linear-gradient(90deg,transparent 0%,#000 28%,#000 100%);-webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 28%,#000 100%);opacity:.95}
.hero-copy{position:relative;z-index:2;padding:38px 42% 28px 22px;min-height:340px;display:flex;flex-direction:column;justify-content:center}.eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:.16em;color:var(--gold-2);font-weight:800}.hero h1{font-family:Georgia,"Times New Roman",serif;font-size:clamp(33px,8vw,52px);line-height:.94;margin:9px 0 10px;letter-spacing:.01em}.hero p{font-size:14px;line-height:1.48;color:#d8e3e9;margin:0 0 18px;max-width:360px}.flag-band{display:flex;gap:7px;flex-wrap:wrap}.flag-pill{display:flex;align-items:center;gap:6px;border:1px solid rgba(227,179,83,.28);background:rgba(0,0,0,.18);border-radius:999px;padding:6px 9px;font-size:11px}.flag-pill b{font-size:17px}
.section-title{display:flex;align-items:end;justify-content:space-between;gap:12px;margin:24px 0 11px}.section-title h2{font-family:Georgia,"Times New Roman",serif;font-size:22px;font-weight:600;margin:0;color:var(--gold-2)}.section-title p{margin:0;color:var(--muted);font-size:12px;text-align:right}
.paper-card{background:linear-gradient(145deg,var(--paper),#f0e2c7);color:var(--ink);border:1px solid rgba(227,179,83,.56);border-radius:var(--radius);box-shadow:var(--shadow-soft);position:relative;overflow:hidden}.paper-card:after{content:"";position:absolute;inset:0;pointer-events:none;opacity:.18;background-image:radial-gradient(#8d7655 .45px,transparent .45px);background-size:5px 5px;mix-blend-mode:multiply}.paper-content{position:relative;z-index:1}
.primary-card{padding:18px}.primary-card .kicker{font-size:11px;text-transform:uppercase;letter-spacing:.13em;color:#7d6130;font-weight:800}.primary-card h3{font-family:Georgia,"Times New Roman",serif;font-size:25px;margin:4px 0 4px}.primary-card p{font-size:13px;color:#56616a;margin:0;line-height:1.4}.progress-line{height:8px;border-radius:10px;background:#d4c4a8;overflow:hidden;margin:15px 0 8px}.progress-line>span{height:100%;display:block;background:linear-gradient(90deg,#2b7e65,#59bd86);border-radius:inherit;transition:width .35s ease}.stats-row{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:12px}.stat{background:rgba(255,255,255,.42);border:1px solid rgba(70,55,35,.12);border-radius:15px;padding:10px;text-align:center}.stat strong{display:block;font-family:Georgia,"Times New Roman",serif;font-size:22px}.stat span{font-size:10px;text-transform:uppercase;letter-spacing:.05em;color:#6e6b65}
.btn{border:0;border-radius:16px;min-height:50px;padding:12px 17px;font-weight:800;letter-spacing:.01em;display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer}.btn-primary{background:linear-gradient(180deg,#f0c566,#d9a542);color:#17304a;box-shadow:0 8px 18px rgba(227,179,83,.25)}.btn-secondary{background:rgba(255,255,255,.08);color:var(--white);border:1px solid rgba(255,255,255,.16)}.btn-paper{background:#183a57;color:#fff}.btn-ghost{background:transparent;color:inherit;border:1px solid currentColor}.btn-wide{width:100%}.btn:disabled{opacity:.45;cursor:not-allowed}.button-row{display:flex;gap:10px;margin-top:15px}.button-row>*{flex:1}
.quick-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.quick-card{border:1px solid rgba(255,255,255,.12);background:linear-gradient(145deg,rgba(255,255,255,.08),rgba(255,255,255,.03));color:var(--white);border-radius:20px;padding:16px;text-align:left;min-height:118px;display:flex;flex-direction:column;justify-content:space-between}.quick-card .icon{font-size:28px}.quick-card strong{font-size:15px}.quick-card span{font-size:11px;color:var(--muted)}
.voyage-strip{display:flex;gap:10px;overflow:auto;padding:2px 1px 10px;scroll-snap-type:x mandatory;scrollbar-width:none}.voyage-strip::-webkit-scrollbar{display:none}.voyage-mini{scroll-snap-align:start;min-width:154px;min-height:170px;border-radius:20px;overflow:hidden;position:relative;border:1px solid rgba(227,179,83,.35);background:#102f49;box-shadow:var(--shadow-soft)}.voyage-mini img{width:100%;height:100px;object-fit:cover;display:block}.voyage-mini .vm-body{padding:10px}.voyage-mini strong{font-family:Georgia,"Times New Roman",serif;font-size:15px;display:block}.voyage-mini span{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}.voyage-mini.done:after{content:"✓";position:absolute;right:8px;top:8px;width:28px;height:28px;display:grid;place-items:center;border-radius:50%;background:var(--green);font-weight:900}
.bottom-nav{position:fixed;left:50%;transform:translateX(-50%);bottom:0;width:min(760px,100%);z-index:50;background:rgba(3,29,52,.96);border-top:1px solid rgba(255,255,255,.12);backdrop-filter:blur(16px);padding:7px 8px var(--safe-bottom);display:grid;grid-template-columns:repeat(4,1fr)}.nav-btn{min-height:56px;border:0;background:transparent;color:#aebfcb;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;border-radius:14px;font-size:10px}.nav-btn .nav-icon{font-size:20px}.nav-btn.active{color:var(--gold-2);background:rgba(227,179,83,.08)}
.search-box{position:relative;margin-bottom:12px}.search-box input{width:100%;min-height:48px;border-radius:16px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.07);color:#fff;padding:0 16px 0 44px;font-size:16px}.search-box:before{content:"⌕";position:absolute;left:15px;top:10px;font-size:24px;color:var(--muted)}.filter-strip{display:flex;gap:8px;overflow:auto;padding-bottom:10px;scrollbar-width:none}.filter-strip::-webkit-scrollbar{display:none}.filter-chip{white-space:nowrap;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.06);color:#dce5eb;border-radius:999px;padding:8px 12px;font-size:12px}.filter-chip.active{background:var(--gold);color:#17304a;border-color:var(--gold);font-weight:800}
.concept-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.concept-card{border:1px solid rgba(255,255,255,.11);background:linear-gradient(145deg,rgba(255,255,255,.08),rgba(255,255,255,.035));color:#fff;border-radius:18px;padding:14px;text-align:left;min-height:112px;position:relative}.concept-card strong{font-family:Georgia,"Times New Roman",serif;font-size:19px;display:block;margin-bottom:5px}.concept-card small{color:var(--muted);font-size:10px;text-transform:uppercase;letter-spacing:.06em}.concept-card .mini-forms{font-size:11px;color:#cfdbe2;line-height:1.35;margin-top:9px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.master-dot{position:absolute;right:10px;top:10px;width:10px;height:10px;border-radius:50%;background:#526b7d;border:1px solid rgba(255,255,255,.2)}.master-dot.m1{background:#8d8f79}.master-dot.m2{background:#bea65f}.master-dot.m3{background:#6baa80}.master-dot.m4{background:var(--gold)}
.detail-head{margin:8px 0 18px}.detail-head .category{font-size:11px;text-transform:uppercase;letter-spacing:.15em;color:var(--gold-2)}.detail-head h1{font-family:Georgia,"Times New Roman",serif;font-size:42px;margin:4px 0 6px}.detail-head p{color:#c1d0d9;font-size:13px;line-height:1.45;margin:0}.language-list{display:grid;gap:9px}.language-row{display:grid;grid-template-columns:42px 1fr auto;align-items:center;gap:10px;background:var(--paper);color:var(--ink);border-radius:16px;padding:11px 13px;border:1px solid #e6d4ae}.language-row .flag{font-size:25px}.language-row .lang-name{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:#76716a}.language-row strong{font-size:21px;display:block;line-height:1.1}.language-row .script-badge{font-size:9px;color:#7a6233;background:#eadab5;border-radius:999px;padding:5px 7px}.discovery-card{margin-top:14px;padding:17px;border-radius:20px;border:1px solid rgba(227,179,83,.35);background:linear-gradient(145deg,rgba(227,179,83,.12),rgba(255,255,255,.04))}.discovery-card .label{font-size:10px;text-transform:uppercase;letter-spacing:.14em;color:var(--gold-2);font-weight:800}.discovery-card h3{font-family:Georgia,"Times New Roman",serif;margin:5px 0 7px;font-size:20px}.discovery-card p{font-size:13px;color:#d2dee5;line-height:1.45;margin:0}
.collection-list{display:grid;gap:10px}.collection-card{display:grid;grid-template-columns:52px 1fr auto;gap:12px;align-items:center;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.06);color:#fff;border-radius:18px;padding:13px;text-align:left}.collection-icon{width:52px;height:52px;border-radius:15px;display:grid;place-items:center;background:rgba(227,179,83,.12);font-size:25px}.collection-card strong{font-family:Georgia,"Times New Roman",serif;font-size:18px}.collection-card p{margin:3px 0 0;color:var(--muted);font-size:11px}.collection-card .percent{font-family:Georgia,"Times New Roman",serif;color:var(--gold-2);font-size:20px}
.challenge-hero{padding:4px 0 12px}.challenge-hero .voyage-label{font-size:10px;color:var(--gold-2);text-transform:uppercase;letter-spacing:.14em}.challenge-hero h1{font-family:Georgia,"Times New Roman",serif;font-size:29px;margin:5px 0}.challenge-hero p{font-size:12px;color:var(--muted);margin:0}.voyage-concepts{display:flex;gap:7px;overflow:auto;padding:10px 0 4px;scrollbar-width:none}.voyage-concepts::-webkit-scrollbar{display:none}.vc-pill{white-space:nowrap;padding:7px 10px;border-radius:999px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.11);font-size:11px;color:#cbd7df}.vc-pill.done{background:rgba(75,183,122,.15);border-color:rgba(75,183,122,.45);color:#dff8e9}.challenge-card{margin-top:12px;background:linear-gradient(145deg,#fff9ec,#efe1c2);color:var(--ink);border:1px solid #e2c985;border-radius:26px;box-shadow:var(--shadow);padding:19px;position:relative;overflow:hidden}.challenge-card:before{content:"";position:absolute;width:160px;height:160px;border:2px solid rgba(111,39,51,.08);border-radius:50%;right:-62px;top:-70px;box-shadow:0 0 0 8px rgba(111,39,51,.035),0 0 0 16px rgba(111,39,51,.025)}.mode-label{display:inline-flex;align-items:center;gap:6px;font-size:10px;text-transform:uppercase;letter-spacing:.13em;color:#705c36;font-weight:900}.question{font-family:Georgia,"Times New Roman",serif;font-size:25px;line-height:1.12;margin:12px 0 6px}.question-sub{font-size:12px;line-height:1.4;color:#66645e;margin-bottom:15px}.word-focus{font-size:clamp(36px,11vw,54px);line-height:1.04;text-align:center;margin:17px 0 18px;font-weight:650;word-break:break-word}.options{display:grid;gap:9px}.option-btn{min-height:54px;border-radius:15px;border:1px solid #d6c6a7;background:rgba(255,255,255,.66);color:#17304a;padding:10px 12px;text-align:left;font-weight:750;display:flex;align-items:center;gap:10px}.option-btn .opt-flag{font-size:23px}.option-btn .opt-letter{width:28px;height:28px;display:grid;place-items:center;border-radius:9px;background:#183a57;color:#fff;font-size:12px}.option-btn:hover{background:#fff}.option-btn.selected{border-color:#1f658a;box-shadow:0 0 0 2px rgba(31,101,138,.18)}.option-btn.correct{background:#e1f3e8;border-color:#6bb188}.option-btn.wrong{background:#fae1dd;border-color:#d27870}.challenge-actions{display:flex;gap:9px;margin-top:13px}.challenge-actions .btn{min-height:45px}.hint-btn{color:#765f32;background:transparent;border:1px solid #cdb991}.hint-panel{margin:11px 0 0;padding:11px 12px;border-radius:13px;background:#fff3cf;color:#654e25;font-size:12px;line-height:1.4;border:1px dashed #c5a758}
.feedback{padding:16px;border-radius:18px;margin-top:13px}.feedback.correct{background:#e0f2e7;color:#16462f;border:1px solid #87c7a1}.feedback.wrong{background:#fae6e2;color:#713730;border:1px solid #df9a92}.feedback h3{font-family:Georgia,"Times New Roman",serif;font-size:21px;margin:0 0 5px}.feedback p{font-size:12px;line-height:1.45;margin:0}.feedback .note{margin-top:8px;padding-top:8px;border-top:1px solid currentColor;opacity:.85}
.multi-select-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px}.word-option{min-height:64px;border-radius:15px;border:1px solid #d8c7a3;background:rgba(255,255,255,.62);color:#16314c;font-weight:800;font-size:18px;padding:10px;word-break:break-word}.word-option.selected{background:#dcebf2;border-color:#4d89a8;box-shadow:0 0 0 2px rgba(77,137,168,.15)}
.match-board{display:grid;grid-template-columns:1fr 1fr;gap:9px}.match-col{display:grid;gap:8px}.match-tile{min-height:48px;border:1px solid #d6c5a1;background:rgba(255,255,255,.66);color:#18334e;border-radius:13px;padding:8px;font-size:13px;font-weight:800;display:flex;align-items:center;justify-content:center;text-align:center}.match-tile.lang{justify-content:flex-start;gap:7px}.match-tile.active{border-color:#1e6b91;box-shadow:0 0 0 2px rgba(30,107,145,.18);background:#e4f0f4}.match-tile.locked{background:#dcefe3;border-color:#7db994;color:#315c44;opacity:.72}.match-tile.bump{animation:bump .28s ease}@keyframes bump{0%,100%{transform:none}50%{transform:translateX(5px)}}
.build-display{min-height:68px;border-bottom:2px solid #a8936f;margin:8px 0 18px;display:flex;align-items:center;justify-content:center;gap:3px;font-size:37px;font-weight:800;letter-spacing:.04em}.letter-bank{display:flex;flex-wrap:wrap;justify-content:center;gap:8px}.letter-tile{min-width:47px;height:50px;border-radius:12px;border:1px solid #bea97d;background:#fff8e9;color:#17314a;font-weight:900;font-size:21px;box-shadow:0 3px 0 #c9b486}.letter-tile:disabled{opacity:.22;box-shadow:none}.build-tools{display:flex;justify-content:center;gap:8px;margin-top:14px}.build-tools button{min-height:42px;border-radius:12px;border:1px solid #c7b28a;background:transparent;color:#614d2a;padding:8px 13px;font-weight:800}
.progress-hero{padding:18px}.ring-wrap{display:flex;align-items:center;gap:16px}.progress-ring{--p:0;width:104px;height:104px;border-radius:50%;background:conic-gradient(var(--gold) calc(var(--p)*1%),rgba(19,45,65,.12) 0);display:grid;place-items:center;position:relative}.progress-ring:before{content:"";position:absolute;inset:10px;border-radius:50%;background:var(--paper)}.progress-ring strong{position:relative;font-family:Georgia,"Times New Roman",serif;font-size:27px}.progress-copy h2{font-family:Georgia,"Times New Roman",serif;font-size:24px;margin:0 0 3px}.progress-copy p{font-size:12px;color:#5d6669;margin:0}.bar-list{display:grid;gap:10px}.bar-row{display:grid;grid-template-columns:125px 1fr 42px;gap:8px;align-items:center}.bar-label{display:flex;gap:7px;align-items:center;font-size:12px}.bar{height:8px;background:rgba(255,255,255,.12);border-radius:999px;overflow:hidden}.bar>span{display:block;height:100%;background:linear-gradient(90deg,#5ea57b,var(--gold));border-radius:inherit}.bar-value{text-align:right;font-size:11px;color:var(--muted)}
.stamp-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.stamp{min-height:105px;border:2px double rgba(227,179,83,.45);border-radius:18px;padding:13px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;transform:rotate(-1deg);background:rgba(255,255,255,.04)}.stamp:nth-child(even){transform:rotate(1.2deg)}.stamp.done{border-color:var(--gold);background:rgba(227,179,83,.08)}.stamp .dest{font-family:Georgia,"Times New Roman",serif;color:var(--gold-2);font-size:17px}.stamp .stamp-title{font-size:10px;text-transform:uppercase;letter-spacing:.07em;color:#ccd8df;margin-top:4px}.stamp .seal{font-size:23px;margin-bottom:5px;filter:grayscale(1);opacity:.4}.stamp.done .seal{filter:none;opacity:1}
.complete-banner{padding:24px;text-align:center;background:linear-gradient(145deg,rgba(227,179,83,.2),rgba(111,39,51,.18));border:1px solid rgba(227,179,83,.45);border-radius:24px;margin:12px 0}.complete-banner .trophy{font-size:46px}.complete-banner h2{font-family:Georgia,"Times New Roman",serif;color:var(--gold-2);margin:7px 0}.complete-banner p{font-size:12px;color:#d3dee5;line-height:1.45}.advanced-list{display:grid;gap:9px}.advanced-item{display:flex;align-items:center;gap:12px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.05);border-radius:16px;padding:12px}.advanced-item .ai-icon{font-size:24px}.advanced-item strong{display:block;font-size:14px}.advanced-item small{color:var(--muted)}
.toast{position:fixed;left:50%;bottom:calc(86px + var(--safe-bottom));transform:translate(-50%,20px);background:#132f48;color:#fff;padding:11px 15px;border-radius:999px;border:1px solid rgba(255,255,255,.15);font-size:12px;z-index:100;opacity:0;pointer-events:none;transition:.25s;box-shadow:var(--shadow)}.toast.show{opacity:1;transform:translate(-50%,0)}
.modal{position:fixed;inset:0;z-index:80;background:rgba(0,0,0,.62);display:flex;align-items:flex-end;justify-content:center;padding:16px 16px calc(16px + env(safe-area-inset-bottom));backdrop-filter:blur(5px)}.modal-card{width:min(680px,100%);max-height:85vh;overflow:auto;border-radius:24px;background:#f7ecd6;color:#173049;padding:18px;box-shadow:0 30px 80px rgba(0,0,0,.45)}.modal-card h2{font-family:Georgia,"Times New Roman",serif;margin:0 0 8px}.modal-card p{font-size:13px;line-height:1.45}.danger{color:#8c3333;border-color:#8c3333}.small-note{font-size:10px;color:var(--muted);line-height:1.45;margin-top:10px}
@media (max-width:420px){.hero{min-height:315px}.hero-copy{min-height:315px;padding:31px 40% 24px 18px}.hero h1{font-size:34px}.hero p{font-size:12px}.flag-pill{padding:5px 7px}.concept-grid{grid-template-columns:1fr 1fr}.bar-row{grid-template-columns:105px 1fr 34px}.language-row strong{font-size:19px}.question{font-size:23px}}
@media (min-width:680px){.screen{padding-left:28px;padding-right:28px}.hero{margin-left:-28px;margin-right:-28px}.quick-grid{grid-template-columns:repeat(4,1fr)}.concept-grid{grid-template-columns:repeat(3,1fr)}.stamp-grid{grid-template-columns:repeat(4,1fr)}.hero-art{width:40%}.hero-copy{padding-left:34px;padding-right:38%}}
@media (prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}}