@font-face{font-family:BKDisplay;src:url('assets/BridgekidDisplay.otf') format('opentype');font-display:swap;font-weight:600 800}
@font-face{font-family:BKText;src:url('assets/BridgekidText.otf') format('opentype');font-display:swap;font-weight:400}
@font-face{font-family:BKText;src:url('assets/BridgekidTextBold.otf') format('opentype');font-display:swap;font-weight:700}
:root{--navy:#0a3558;--navy2:#062945;--cyan:#19b9cf;--cyan2:#7de0ea;--coral:#ff7156;--green:#61a95f;--amber:#d5a143;--ink:#0a3558;--muted:#597185;--paper:#fbfbf8;--white:#fff;--line:rgba(10,53,88,.10);--shadow:0 26px 70px rgba(18,59,87,.12),0 10px 26px rgba(18,59,87,.07),inset 0 1px 0 rgba(255,255,255,.98),inset 0 -1px 0 rgba(255,255,255,.62);--shadow-strong:0 42px 100px rgba(18,59,87,.15),0 16px 38px rgba(18,59,87,.08),inset 0 2px 0 rgba(255,255,255,.98),inset 0 -18px 38px rgba(57,182,211,.08);--max:1520px;--focus:0 0 0 3px #fff,0 0 0 6px #0a3558}
*{box-sizing:border-box}html{background:var(--paper);scroll-behavior:smooth}body{margin:0;font-family:BKText,Arial,sans-serif;color:var(--ink);background:radial-gradient(circle at 8% 12%,rgba(25,185,207,.08),transparent 24%),radial-gradient(circle at 92% 7%,rgba(255,113,86,.07),transparent 23%),#fbfbf8;min-height:100vh}button,input{font:inherit}.site{min-height:100vh;overflow:hidden}.site button{transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease,background .18s ease}.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}.skip-link{position:fixed;left:14px;top:-100px;z-index:9999;background:var(--navy);color:white;padding:12px 16px;border-radius:14px}.skip-link:focus{top:14px}.icon-svg{width:24px;height:24px;flex:none}.glass-organic{position:relative;background:radial-gradient(circle at 14% 6%,rgba(255,255,255,.96),rgba(255,255,255,.57) 28%,rgba(255,255,255,.15) 48%,transparent 64%),linear-gradient(145deg,rgba(255,255,255,.68),rgba(233,243,247,.32));border:1px solid rgba(255,255,255,.92);box-shadow:var(--shadow);backdrop-filter:blur(28px) saturate(145%);-webkit-backdrop-filter:blur(28px) saturate(145%)}.glass-organic::before{content:"";position:absolute;inset:1px;border-radius:inherit;pointer-events:none;box-shadow:inset 0 0 0 1px rgba(10,53,88,.045),inset 0 -18px 30px rgba(255,255,255,.16)}.glass-organic>*{position:relative;z-index:2}.glass-card{background:rgba(255,255,255,.73);border:1px solid rgba(255,255,255,.92);box-shadow:0 18px 42px rgba(18,59,87,.10),inset 0 1px 0 #fff;backdrop-filter:blur(18px)}
/* header */
.master-header-wrap{position:sticky;top:0;z-index:500;padding:12px 18px 0}.master-header{max-width:var(--max);height:106px;margin:auto;border-radius:54px 60px 50px 58px/50px 46px 58px 52px;padding:13px 18px;display:grid;grid-template-columns:270px minmax(220px,1fr) auto;align-items:center;gap:20px;box-shadow:var(--shadow-strong)}.brand{border:0;background:transparent;padding:0;cursor:pointer;display:block}.brand img{width:250px;height:74px;object-fit:contain;object-position:left center;display:block}.brand-arc{height:76px;position:relative}.brand-arc::before{content:"";position:absolute;left:6%;right:6%;bottom:11px;height:70px;border-radius:50% 50% 0 0/100% 100% 0 0;border-top:5px solid rgba(25,185,207,.34)}.brand-arc::after{content:"";position:absolute;left:50%;bottom:59px;transform:translateX(-50%);width:18px;height:18px;border-radius:50%;border:4px solid rgba(25,185,207,.88);background:#effdff;box-shadow:0 0 0 7px rgba(25,185,207,.09),0 8px 18px rgba(25,185,207,.16)}.brand-arc i{position:absolute;right:5%;bottom:9px;width:30%;height:3px;background:linear-gradient(90deg,rgba(25,185,207,0),rgba(255,113,86,.24));filter:blur(.2px)}.header-controls{display:flex;gap:9px;align-items:center}.glass-control{width:68px;height:68px;border-radius:50%;border:1px solid rgba(255,255,255,.92);background:radial-gradient(circle at 30% 12%,#fff,rgba(255,255,255,.74) 40%,rgba(231,241,246,.48) 72%);box-shadow:0 12px 26px rgba(18,59,87,.10),inset 0 1px 0 #fff,inset 0 -8px 15px rgba(58,171,207,.07);display:grid;place-items:center;color:var(--navy);cursor:pointer}.glass-control .icon-svg{width:31px;height:31px}.glass-control:hover{transform:translateY(-3px);box-shadow:0 20px 34px rgba(18,59,87,.14),0 0 18px rgba(25,185,207,.08),inset 0 1px 0 #fff}.glass-control.help{color:var(--navy)}.glass-control.saved.active{color:var(--cyan);box-shadow:0 0 0 2px rgba(25,185,207,.08),0 18px 32px rgba(25,185,207,.13),inset 0 1px 0 #fff}.glass-control:focus-visible,.btn:focus-visible,.text-link:focus-visible,.guided-card:focus-visible,.world-head:focus-visible,.path-row:focus-visible,.choice:has(input:focus-visible),.audio-btn:focus-visible,.helper-btn:focus-visible,.language-choice:focus-visible,.support-choice:focus-visible,.safety-option:focus-visible{outline:none;box-shadow:var(--focus)}
/* layout */
.section-wide,.section-standard,.world-page,.skills-page,.lesson-page{max-width:calc(var(--max) - 48px);margin:0 auto}.section-standard{padding:110px 24px}.section-wide{margin-top:22px}.section-head{max-width:790px;margin-bottom:34px}.section-head.split{max-width:none;display:flex;align-items:end;justify-content:space-between;gap:30px}.section-head h2,.audience h2,.principle-copy h2,.help-strip h2{font-family:BKDisplay;font-size:clamp(2.25rem,4vw,4.35rem);line-height:1.03;letter-spacing:-.045em;margin:0 0 14px}.section-head p,.audience p,.principle-copy p,.help-strip p{font-size:1.1rem;line-height:1.6;color:var(--muted);margin:0}.btn{min-height:58px;border-radius:999px;border:1px solid rgba(255,255,255,.92);padding:0 22px;display:inline-flex;align-items:center;justify-content:center;gap:10px;font-weight:700;cursor:pointer}.btn.primary{color:#fff;background:radial-gradient(circle at 25% 0,rgba(255,255,255,.25),transparent 35%),linear-gradient(145deg,#ff8b6e,#ff7156 66%,#ec5845);box-shadow:0 18px 36px rgba(255,113,86,.24),inset 0 1px 0 rgba(255,255,255,.55)}.btn.secondary{color:var(--navy);background:linear-gradient(145deg,rgba(255,255,255,.9),rgba(230,241,246,.58));box-shadow:0 14px 28px rgba(18,59,87,.09),inset 0 1px 0 #fff}.btn.success{color:white;background:linear-gradient(145deg,#7cbd76,#5aa45c);box-shadow:0 18px 34px rgba(90,164,92,.22),inset 0 1px 0 rgba(255,255,255,.5)}.btn:hover,.text-link:hover{transform:translateY(-2px)}.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}.text-link,.continue-link{border:0;background:transparent;color:var(--navy);font-weight:700;display:inline-flex;align-items:center;gap:8px;cursor:pointer;padding:8px 0}.continue-link{margin-top:20px;color:#0a89a9}
/* hero */
.hero{min-height:720px;padding:68px 24px 60px;display:grid;grid-template-columns:.82fr 1.18fr;align-items:center;gap:68px}.hero-copy h1{font-family:BKDisplay;font-size:clamp(4.8rem,7vw,8.4rem);line-height:.82;letter-spacing:-.065em;margin:0}.hero-copy h1 em{font-style:normal;color:var(--cyan)}.hero-copy>p{font-size:1.18rem;line-height:1.65;color:var(--muted);max-width:610px;margin:30px 0 0}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:34px}.hero-media{height:610px;border-radius:110px 42px 100px 48px/86px 56px 96px 62px;padding:16px;box-shadow:var(--shadow-strong);overflow:visible}.hero-media>img{width:100%;height:100%;object-fit:cover;border-radius:96px 30px 88px 36px/74px 42px 84px 50px;filter:saturate(.94) contrast(.98)}.hero-float{position:absolute;right:-20px;bottom:54px;max-width:330px;padding:18px 20px;border-radius:26px 30px 24px 34px;display:grid;gap:4px}.hero-float small{color:var(--muted)}.hero-float strong{font-family:BKDisplay;font-size:1.35rem}.hero-float span{font-size:.92rem;color:var(--muted)}
/* audience */
.audience{display:grid;grid-template-columns:1fr .82fr;gap:74px;align-items:center}.audience-copy{padding-right:20px}.audience-facts{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}.audience-facts span{min-width:150px;padding:15px 17px;border-left:3px solid rgba(25,185,207,.48);color:var(--muted)}.audience-facts b{display:block;color:var(--navy);font-size:1.05rem}.audience-image{height:520px;border-radius:48px 72px 42px 76px/54px 48px 72px 44px;overflow:hidden;box-shadow:0 28px 60px rgba(18,59,87,.14)}.audience-image img{width:100%;height:100%;object-fit:cover;object-position:center 35%}
/* journey */
.journey-line-ui{min-height:154px;border-radius:42px 48px 40px 50px;padding:28px 24px 22px 110px;display:grid;grid-template-columns:repeat(7,1fr);align-items:center;position:relative}.journey-line-ui::after{content:"";position:absolute;left:9%;right:4%;top:66px;height:5px;border-radius:10px;background:linear-gradient(90deg,var(--navy),var(--cyan) 32%,rgba(176,194,205,.7) 55%,rgba(255,113,86,.45) 78%,var(--green));opacity:.72}.journey-diamond{position:absolute;left:28px;top:41px;width:72px;height:72px;transform:rotate(45deg);border-radius:18px;background:linear-gradient(145deg,#0c75a4,#10b9d1);color:white;display:grid;place-items:center;font-size:24px;box-shadow:0 14px 30px rgba(10,117,164,.25),0 0 0 10px rgba(25,185,207,.07)}.journey-diamond::before{content:"";position:absolute;inset:10px;border:1px solid rgba(255,255,255,.62);border-radius:12px}.journey-diamond{font-family:BKDisplay}.journey-diamond::after{content:"✦";transform:rotate(-45deg)}.journey-diamond{color:transparent}.journey-node{position:relative;z-index:2;text-align:center;display:grid;justify-items:center;gap:10px}.journey-node span{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(145deg,#fff,#e7f0f4);border:2px solid rgba(156,181,196,.76);box-shadow:0 8px 18px rgba(18,59,87,.10);font-weight:700}.journey-node:first-of-type span{background:linear-gradient(145deg,#28c6da,#0e8bc1);border-color:#eaffff;color:white}.journey-node small{font-size:.78rem;font-weight:700;color:var(--muted);max-width:90px;line-height:1.15}
/* guided */
.guided-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.guided-card{min-height:124px;border-radius:28px 34px 26px 36px;border:0;padding:18px;text-align:left;display:grid;grid-template-columns:60px 1fr auto;align-items:center;gap:15px;cursor:pointer;color:var(--navy)}.guided-index{width:50px;height:50px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(145deg,#fff,#e9f1f5);box-shadow:0 10px 20px rgba(18,59,87,.09);font-weight:700}.guided-card strong{font-family:BKDisplay;font-size:1.35rem;display:block}.guided-card small{display:block;color:var(--muted);margin-top:4px}.mini-status{font-size:.72rem;font-style:normal;border-radius:999px;padding:6px 9px;background:rgba(10,53,88,.06);white-space:nowrap}.mini-status.learned{background:rgba(25,185,207,.10);color:#0a86a3}.mini-status.secure{background:rgba(97,169,95,.12);color:#427c42}.mini-status.transfer{background:rgba(255,113,86,.11);color:#b04f3e}
/* worlds */
.world-list{display:grid;gap:18px}.world{border-radius:38px 46px 34px 50px;overflow:hidden}.world-head{width:100%;border:0;background:transparent;display:grid;grid-template-columns:190px 1fr auto 30px;align-items:center;gap:24px;padding:16px 22px 16px 16px;text-align:left;cursor:pointer}.world-image{height:142px;border-radius:30px 36px 28px 38px;overflow:hidden;box-shadow:0 15px 30px rgba(18,59,87,.12)}.world-image img{width:100%;height:100%;object-fit:cover}.world-copy small{display:block;color:#0a8ea7;font-weight:700;margin-bottom:6px}.world-copy strong{font-family:BKDisplay;font-size:2.05rem;display:block}.world-copy em{display:block;font-style:normal;color:var(--muted);margin-top:5px;line-height:1.4}.world-progress{text-align:right}.world-progress b{display:block;font-family:BKDisplay;font-size:1.7rem}.world-progress small{color:var(--muted)}.world-chevron .icon-svg{transition:transform .2s}.world.open .world-chevron .icon-svg{transform:rotate(90deg)}.world-paths{padding:0 16px 16px}.path-row{width:100%;border:0;border-top:1px solid rgba(10,53,88,.07);background:transparent;min-height:82px;padding:12px 12px;display:grid;grid-template-columns:1fr auto 26px;align-items:center;gap:18px;text-align:left;cursor:pointer}.path-row:first-child{border-top:0}.path-row strong{font-family:BKDisplay;font-size:1.2rem;display:block}.path-row small{color:var(--muted);display:block;margin-top:3px}.row-meta{display:flex;align-items:center;gap:10px}.row-meta em{font-style:normal;font-size:.78rem;color:var(--muted)}
/* help */
.help-strip{border-radius:42px 48px 40px 52px;padding:34px 38px;display:grid;grid-template-columns:82px 1fr auto;align-items:center;gap:26px}.help-strip-icon{width:76px;height:76px;border-radius:50%;background:linear-gradient(145deg,#fff,#e9f2f5);box-shadow:0 14px 26px rgba(18,59,87,.10),inset 0 1px 0 white;display:grid;place-items:center}.help-strip-icon .icon-svg{width:36px;height:36px}.help-strip h2{font-size:clamp(2rem,3.5vw,3.6rem);margin-bottom:6px}.principles{display:grid;grid-template-columns:.9fr 1.1fr;gap:72px;align-items:center}.principle-photo{height:610px;border-radius:70px 40px 74px 42px/62px 46px 70px 52px;overflow:hidden;box-shadow:0 28px 70px rgba(18,59,87,.14)}.principle-photo img{width:100%;height:100%;object-fit:cover}.principle-list{display:grid;gap:0;margin:26px 0}.principle-list div{padding:17px 0;border-top:1px solid rgba(10,53,88,.08)}.principle-list b{display:block;font-size:1.05rem}.principle-list span{color:var(--muted);display:block;margin-top:4px}
/* world & skills pages */
.world-page,.skills-page{padding:26px 24px 80px}.world-hero,.skills-hero{min-height:490px;border-radius:56px 64px 50px 72px;padding:44px 48px;display:grid;grid-template-columns:1fr .85fr;align-items:center;gap:40px;overflow:hidden}.world-hero h1,.skills-hero h1{font-family:BKDisplay;font-size:clamp(4rem,6vw,7rem);letter-spacing:-.06em;line-height:.9;margin:16px 0}.world-hero p,.skills-hero p{color:var(--muted);font-size:1.1rem;max-width:600px}.world-hero>img{width:100%;height:410px;object-fit:cover;border-radius:44px 50px 40px 54px}.standalone-paths{display:grid;gap:8px}.standalone-paths .path-row{border:1px solid rgba(255,255,255,.9);background:rgba(255,255,255,.62);border-radius:24px 28px 22px 30px;padding:15px 18px;box-shadow:0 10px 22px rgba(18,59,87,.06)}.skill-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.skill-stats span{min-height:126px;border-radius:28px 32px 26px 34px;background:rgba(255,255,255,.62);display:grid;place-items:center;align-content:center;color:var(--muted);box-shadow:inset 0 1px 0 white}.skill-stats b{font-family:BKDisplay;font-size:2.8rem;color:var(--navy);line-height:1}.empty-state{border:1px dashed rgba(10,53,88,.18);border-radius:32px;padding:38px;text-align:center;color:var(--muted)}.empty-state h3{font-family:BKDisplay;font-size:2rem;color:var(--navy);margin:0 0 8px}.empty-state.compact{padding:22px}
/* lesson */
.lesson-page{padding:28px 24px 80px}.lesson-top{display:flex;align-items:center;justify-content:space-between;gap:24px;margin:8px 0 14px}.lesson-title small{font-weight:700;color:#0b90a7}.lesson-title h1{font-family:BKDisplay;font-size:clamp(2.5rem,4vw,4.5rem);letter-spacing:-.045em;margin:4px 0 2px}.lesson-title p{margin:0;color:var(--muted)}.save-inline{border:1px solid rgba(255,255,255,.92);background:linear-gradient(145deg,#fff,rgba(229,241,246,.62));border-radius:999px;min-height:54px;padding:0 15px 0 10px;display:flex;align-items:center;gap:8px;box-shadow:0 12px 24px rgba(18,59,87,.08);cursor:pointer;font-weight:700;color:var(--navy)}.save-inline.saved{color:#078aa6;background:rgba(232,252,254,.88)}.lesson-rail{min-height:118px;border-radius:34px 40px 32px 42px;padding:18px 22px 13px 104px;display:grid;grid-template-columns:repeat(7,1fr);align-items:center;position:relative}.rail-line{position:absolute;left:8%;right:4%;top:48px;height:5px;border-radius:9px;background:linear-gradient(90deg,var(--navy),var(--cyan) 32%,rgba(179,195,205,.72) 35% 82%,var(--green));opacity:.68}.rail-diamond{position:absolute;left:22px;top:26px;width:64px;height:64px;transform:rotate(45deg);border-radius:17px;background:linear-gradient(145deg,#0b76a7,#17bfd2);box-shadow:0 12px 25px rgba(11,118,167,.24),0 0 0 8px rgba(25,185,207,.06);color:transparent}.rail-diamond::after{content:'✦';color:white;position:absolute;inset:0;display:grid;place-items:center;transform:rotate(-45deg);font-size:24px}.rail-step{z-index:2;display:grid;justify-items:center;gap:8px;text-align:center}.rail-step>span{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(145deg,#fff,#e7f0f4);border:2px solid rgba(158,182,197,.78);font-weight:700}.rail-step.current>span{background:linear-gradient(145deg,#2ac6da,#0d8bc1);color:white;border-color:#eaffff;box-shadow:0 0 0 7px rgba(25,185,207,.10)}.rail-step.done>span{background:linear-gradient(145deg,#79bc74,#579f59);color:white;border-color:#efffef}.rail-step small{font-size:.7rem;font-weight:700;color:var(--muted);line-height:1.1;max-width:88px}.lesson-surface{margin-top:18px;border-radius:58px 66px 52px 74px;min-height:620px;padding:42px;box-shadow:var(--shadow-strong)}.lesson-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:46px;align-items:center;min-height:530px}.stage-copy small{font-weight:700;letter-spacing:.08em;color:#0a8da5;text-transform:uppercase}.stage-copy h2{font-family:BKDisplay;font-size:clamp(2.5rem,4vw,4.9rem);line-height:1.02;letter-spacing:-.045em;margin:8px 0 12px}.stage-copy p{font-size:1.06rem;line-height:1.6;color:var(--muted)}.learning-goal{margin:22px 0;padding:17px 18px;border-radius:23px;background:rgba(255,255,255,.58);box-shadow:inset 0 1px 0 #fff}.learning-goal small{color:var(--muted);display:block}.learning-goal strong{display:block;margin-top:4px;line-height:1.45}.lesson-image{height:520px;border-radius:52px 34px 58px 36px/44px 40px 54px 44px;overflow:hidden;position:relative;box-shadow:0 24px 56px rgba(18,59,87,.14)}.lesson-image.portrait{height:540px}.lesson-image img{width:100%;height:100%;object-fit:cover}.image-caption{position:absolute;left:20px;right:20px;bottom:18px;border-radius:22px;padding:14px 16px;background:rgba(255,255,255,.82);backdrop-filter:blur(14px);box-shadow:0 10px 24px rgba(18,59,87,.09)}.image-caption span{display:block;color:var(--muted);font-size:.78rem}.image-caption strong{display:block;margin-top:3px}.phrase{margin:22px 0;padding:21px 22px;border-radius:30px 36px 28px 40px;background:rgba(255,255,255,.63);box-shadow:0 14px 32px rgba(18,59,87,.08),inset 0 1px 0 white}.phrase small{display:block;color:var(--muted)}.phrase blockquote,.phrase strong{font-family:BKDisplay;font-size:clamp(1.75rem,2.7vw,3rem);line-height:1.25;margin:6px 0}.audio-row{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0 22px}.audio-btn{min-height:86px;min-width:210px;border-radius:999px;border:1px solid rgba(255,255,255,.92);background:linear-gradient(145deg,#fff,rgba(225,241,247,.58));box-shadow:0 16px 32px rgba(18,59,87,.09),inset 0 1px 0 #fff;padding:9px 20px 9px 13px;display:flex;align-items:center;gap:12px;text-align:left;cursor:pointer;color:var(--navy)}.audio-btn .icon-svg{width:50px;height:50px;padding:11px;border-radius:50%;background:linear-gradient(145deg,#0b4d78,#07345c);color:white;box-shadow:0 10px 22px rgba(7,52,92,.22)}.audio-btn span{display:grid}.audio-btn small{color:var(--muted)}.audio-btn.slow{color:#0a849f}.audio-btn.slow .icon-svg{background:linear-gradient(145deg,#19b8cf,#0c809d)}.audio-btn.small{min-width:0;min-height:64px}.lesson-visual{height:470px;display:grid;place-items:center}.lesson-visual img{width:100%;height:100%;object-fit:contain;mix-blend-mode:multiply}.helper-btn{min-height:60px;border-radius:999px;border:1px solid rgba(255,255,255,.92);background:linear-gradient(145deg,#fff,rgba(232,242,246,.62));box-shadow:0 13px 26px rgba(18,59,87,.08),inset 0 1px 0 #fff;padding:7px 18px 7px 10px;display:flex;align-items:center;gap:10px;font-weight:700;cursor:pointer}.helper-btn .icon-svg{width:36px;height:36px}.helper-btn.compact{min-height:52px;margin-bottom:12px}.translation{margin:14px 0;padding:18px 20px;border-radius:25px 30px 24px 32px;background:linear-gradient(145deg,rgba(240,253,255,.88),rgba(220,245,249,.58));border:1px solid rgba(172,237,244,.72);box-shadow:0 14px 28px rgba(18,59,87,.07),inset 0 1px 0 white}.translation small{display:block;color:#0a8fa7}.translation strong{display:block;font-size:1.3rem;margin-top:3px}.translation p{color:var(--muted);line-height:1.5;margin-bottom:0}.translation.small strong{font-size:1rem}.variants{display:grid;gap:8px;margin:15px 0}.variants>small{font-weight:700;color:var(--muted)}.variants button{border:0;background:rgba(255,255,255,.58);border-radius:18px;padding:11px 13px;text-align:left;cursor:pointer}.practice-stage{min-height:530px}.practice-grid{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:start;margin-top:24px}.task-visual{min-height:420px;border-radius:40px 46px 38px 50px;background:rgba(255,255,255,.26);border:1px solid rgba(255,255,255,.76);padding:22px;display:grid;place-items:center;overflow:hidden}.task-panel{min-height:420px}.fade-info{border-left:4px solid rgba(25,185,207,.48);padding:11px 13px;background:rgba(255,255,255,.46);border-radius:0 18px 18px 0;color:var(--muted);margin-bottom:12px}.choices{border:0;padding:0;margin:0;display:grid;gap:11px}.choices legend{font-family:BKDisplay;font-size:1.65rem;line-height:1.3;margin-bottom:10px}.choice{min-height:70px;border-radius:28px 32px 26px 34px;padding:12px 16px;display:grid;grid-template-columns:40px 1fr;align-items:center;gap:13px;background:linear-gradient(145deg,rgba(255,255,255,.78),rgba(235,244,247,.5));border:1px solid rgba(255,255,255,.92);box-shadow:0 13px 26px rgba(18,59,87,.07),inset 0 1px 0 white;cursor:pointer}.choice:hover{transform:translateY(-2px);box-shadow:0 19px 34px rgba(18,59,87,.11),inset 0 1px 0 white}.choice input{position:absolute;opacity:0}.radio{width:34px;height:34px;border-radius:50%;border:2px solid var(--navy);background:rgba(255,255,255,.64);display:grid;place-items:center}.radio i{width:14px;height:14px;border-radius:50%}.choice.selected{border-color:rgba(126,226,239,.92);background:linear-gradient(145deg,#fff,rgba(220,247,250,.66));box-shadow:0 0 0 2px rgba(25,185,207,.07),0 16px 30px rgba(25,185,207,.10)}.choice.selected .radio{border-color:var(--cyan)}.choice.selected .radio i{background:var(--cyan)}.choice.correct{border-color:rgba(97,169,95,.42);background:rgba(237,250,237,.82)}.choice.wrong{border-color:rgba(255,113,86,.42);background:rgba(255,239,234,.82)}.check-btn{margin-top:16px}.feedback{margin:15px 0;padding:16px 18px;border-radius:28px 34px 26px 36px;display:grid;grid-template-columns:48px 1fr;gap:12px;align-items:center}.feedback>span{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:white;box-shadow:0 9px 20px rgba(18,59,87,.08)}.feedback.correct{background:linear-gradient(145deg,rgba(239,252,239,.94),rgba(222,245,222,.64));border:1px solid rgba(97,169,95,.24)}.feedback.retry{background:linear-gradient(145deg,rgba(255,249,247,.94),rgba(255,232,225,.64));border:1px solid rgba(255,113,86,.24)}.feedback strong{font-size:1.05rem}.feedback p{margin:4px 0 0;color:var(--muted);line-height:1.45}.feedback-actions{display:flex;gap:10px;flex-wrap:wrap}.act{max-width:900px;margin:auto;text-align:center;padding:24px 0}.act-symbol{width:150px;height:150px;margin:0 auto 22px;transform:rotate(45deg);border-radius:34px;background:linear-gradient(145deg,#13b6cf,#0c6e9c);box-shadow:0 22px 50px rgba(12,110,156,.22),0 0 0 18px rgba(25,185,207,.06);color:transparent}.act-symbol::after{content:'✦';color:white;position:absolute;inset:0;display:grid;place-items:center;transform:rotate(-45deg);font-size:52px}.mission{max-width:720px;margin:25px auto;padding:22px 24px;border-radius:30px 36px 28px 40px;background:linear-gradient(145deg,rgba(255,250,248,.9),rgba(255,232,224,.52));border:1px solid rgba(255,113,86,.18)}.mission small{color:#b45743;font-weight:700}.mission h3{font-family:BKDisplay;font-size:1.7rem;margin:7px 0}.mission p{color:var(--muted);line-height:1.5}.act-buttons{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}.lesson-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:18px}
/* interaction visuals */
.schedule{width:100%;border-radius:28px;overflow:hidden;background:rgba(255,255,255,.74);box-shadow:0 16px 34px rgba(18,59,87,.10)}.schedule-head,.schedule-row{display:grid;grid-template-columns:1fr 1.2fr 1.2fr}.schedule-head{padding:11px 15px;background:var(--navy);color:white;font-size:.78rem;font-weight:700}.schedule-row{padding:15px;border-top:1px solid rgba(10,53,88,.07)}.schedule-row.highlight{background:rgba(25,185,207,.12);box-shadow:inset 4px 0 0 var(--cyan)}.map-ui{width:100%;min-height:340px;position:relative;display:grid;grid-template-columns:repeat(2,1fr);gap:18px;padding:25px}.map-node{position:relative;z-index:2;border-radius:24px;padding:18px;background:rgba(255,255,255,.78);box-shadow:0 13px 26px rgba(18,59,87,.09);display:flex;gap:10px;align-items:center}.map-node span{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:#e9f2f5}.map-node.target{box-shadow:0 0 0 3px rgba(25,185,207,.13),0 15px 28px rgba(25,185,207,.12)}.map-node.target span{background:var(--cyan);color:white}.map-line{position:absolute;inset:28% 18%;border:3px dashed rgba(25,185,207,.36);border-radius:40%}.dialogue,.photo-task,.audio-case{width:100%;display:grid;gap:14px}.dialogue img,.photo-task img,.audio-case img{width:100%;height:250px;object-fit:cover;border-radius:30px 36px 28px 38px}.dialogue>div{border-radius:24px;padding:18px;background:rgba(255,255,255,.78);box-shadow:0 13px 26px rgba(18,59,87,.08)}.dialogue small{color:var(--muted)}.dialogue blockquote{font-family:BKDisplay;font-size:1.7rem;margin:6px 0}.photo-prompt{font-family:BKDisplay;font-size:1.5rem;text-align:center}.task-icons{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.task-icons span{padding:12px;border-radius:18px;background:rgba(255,255,255,.7);text-align:center;font-weight:700}.offer,.menu-ui,.transit-ui{width:100%;border-radius:30px;background:rgba(255,255,255,.78);box-shadow:0 16px 34px rgba(18,59,87,.10);padding:22px}.offer>small,.menu-ui>small{color:#0b90a7;font-weight:700}.offer>div,.menu-ui>div{display:flex;justify-content:space-between;gap:18px;padding:13px 0;border-top:1px solid rgba(10,53,88,.08)}.offer>div:first-of-type,.menu-ui>div:first-of-type{margin-top:10px}.offer span{color:var(--muted)}.route-ui{width:100%;display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:8px}.route-node{min-width:95px;border-radius:22px;padding:14px;text-align:center;background:rgba(255,255,255,.8);box-shadow:0 12px 24px rgba(18,59,87,.08)}.route-node span{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;margin:0 auto 7px;background:var(--cyan);color:white}.route-ui>i{width:34px;height:3px;background:rgba(25,185,207,.36)}.shop-ui{width:100%;display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.shop-ui>div{border-radius:24px;padding:16px;background:rgba(255,255,255,.78);display:grid;gap:7px;box-shadow:0 12px 24px rgba(18,59,87,.08)}.product-shape{height:80px;border-radius:22px;background:linear-gradient(145deg,#cdeef4,#fff);box-shadow:inset 0 1px 0 white}.shop-ui strong{color:#0a8ea7}.transit-ui{display:grid;grid-template-columns:80px 1fr 1fr;align-items:center;gap:18px}.line-no{width:64px;height:64px;border-radius:20px;background:var(--navy);color:white;font-family:BKDisplay;font-size:2rem;display:grid;place-items:center}.transit-ui small{display:block;color:var(--muted)}.transit-ui strong{font-size:1.2rem}
/* safety */
.safety-surface{border-radius:58px 66px 52px 74px;padding:38px;display:grid;grid-template-columns:.9fr 1.1fr;gap:42px;min-height:650px}.safety-image{border-radius:48px 34px 52px 36px;overflow:hidden}.safety-image img{width:100%;height:100%;min-height:570px;object-fit:cover}.safety-content h2{font-family:BKDisplay;font-size:clamp(2.5rem,4vw,4.8rem);line-height:1.05;letter-spacing:-.04em;margin:10px 0 20px}.safety-case{margin-top:22px;padding-top:18px;border-top:1px solid rgba(10,53,88,.08)}.safety-case small{color:#0a8ea7;font-weight:700}.safety-case h3{font-family:BKDisplay;font-size:1.55rem}.safety-option{width:100%;border:1px solid rgba(255,255,255,.92);background:rgba(255,255,255,.72);border-radius:22px;padding:14px 16px;text-align:left;margin-top:8px;cursor:pointer;box-shadow:0 10px 20px rgba(18,59,87,.06)}
/* modal */
.modal-backdrop{position:fixed;inset:0;z-index:1000;background:rgba(4,34,54,.28);backdrop-filter:blur(16px);display:grid;place-items:center;padding:20px}.modal-panel{width:min(860px,100%);max-height:calc(100vh - 40px);overflow:auto;border-radius:46px 54px 42px 58px;padding:44px;box-shadow:0 50px 110px rgba(4,34,54,.28),inset 0 1px 0 white}.modal-panel h2{font-family:BKDisplay;font-size:clamp(2.5rem,5vw,4.5rem);letter-spacing:-.045em;margin:0 0 10px}.modal-panel>p{color:var(--muted);font-size:1.05rem;line-height:1.55}.modal-close{position:absolute;right:18px;top:18px;width:48px;height:48px;border-radius:50%;border:1px solid rgba(255,255,255,.92);background:rgba(255,255,255,.78);display:grid;place-items:center;cursor:pointer}.language-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:22px}.language-choice{min-height:78px;border-radius:24px;border:1px solid rgba(255,255,255,.92);background:rgba(255,255,255,.62);box-shadow:0 10px 20px rgba(18,59,87,.06);padding:13px 15px;display:flex;align-items:center;justify-content:space-between;cursor:pointer}.language-choice.selected{border-color:rgba(126,226,239,.92);background:rgba(229,250,252,.8);box-shadow:0 0 0 2px rgba(25,185,207,.07)}.language-choice span{color:var(--muted)}.help-list,.saved-list{display:grid;gap:10px;margin-top:24px}.help-item{border-radius:24px;padding:16px;background:rgba(255,255,255,.64);border:1px solid rgba(255,255,255,.9);display:grid;grid-template-columns:1fr auto;gap:18px;align-items:center}.help-item small{display:block;color:#0b90a7;font-weight:700}.help-item strong{display:block;font-family:BKDisplay;font-size:1.28rem;margin-top:3px}.help-item em{display:block;color:var(--muted);font-style:normal;margin-top:4px}.help-item>div:last-child{display:flex;gap:7px;align-items:center}.mini-audio{border:1px solid rgba(255,255,255,.9);background:rgba(255,255,255,.78);border-radius:999px;padding:8px 11px;display:flex;align-items:center;gap:6px;cursor:pointer}.mini-audio .icon-svg{width:18px;height:18px}.saved-row{width:100%;border:1px solid rgba(255,255,255,.92);background:rgba(255,255,255,.68);border-radius:24px;padding:13px;display:grid;grid-template-columns:46px 1fr 24px;align-items:center;gap:12px;text-align:left;cursor:pointer}.saved-row>span:first-child{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:#eef6f8}.saved-row strong{display:block}.saved-row small{color:var(--muted);display:block;margin-top:3px}.menu-links{display:grid;margin-top:22px}.menu-links button{border:0;border-top:1px solid rgba(10,53,88,.08);background:transparent;padding:15px 0;text-align:left;font-family:BKDisplay;font-size:1.35rem;cursor:pointer}.menu-settings{margin-top:26px;padding-top:20px;border-top:1px solid rgba(10,53,88,.10)}.menu-settings h3{font-family:BKDisplay;font-size:1.7rem}.support-options{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.support-choice{border:1px solid rgba(255,255,255,.92);background:rgba(255,255,255,.62);border-radius:20px;padding:12px;text-align:left;cursor:pointer}.support-choice b,.support-choice small{display:block}.support-choice small{color:var(--muted);margin-top:4px}.support-choice.selected{background:rgba(229,250,252,.8);border-color:rgba(126,226,239,.92)}.menu-settings label{display:flex;justify-content:space-between;align-items:center;padding:15px 0;border-top:1px solid rgba(10,53,88,.07);font-weight:700}.menu-settings input{width:24px;height:24px;accent-color:var(--cyan)}
/* footer/accessibility */
.footer{max-width:calc(var(--max) - 48px);margin:20px auto 0;padding:30px 24px 42px;border-top:1px solid rgba(10,53,88,.08);display:grid;grid-template-columns:180px 1fr auto auto;align-items:center;gap:20px;color:var(--muted)}.footer img{width:170px}.footer p{margin:0}.footer button{border:0;background:transparent;font-weight:700;color:var(--navy);cursor:pointer}.large-text{font-size:118%}.high-contrast{--ink:#001f36;--muted:#29485c;--line:rgba(0,31,54,.25)}.high-contrast .glass-organic{border-color:rgba(0,31,54,.24)}.reduced-motion *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
/* responsive */
@media(max-width:1260px){.master-header{grid-template-columns:230px 1fr auto}.brand img{width:220px}.hero{grid-template-columns:1fr 1fr;gap:42px}.hero-copy h1{font-size:clamp(4.2rem,6vw,6.7rem)}.guided-grid{grid-template-columns:repeat(2,1fr)}.world-head{grid-template-columns:155px 1fr auto 28px}.world-image{height:125px}.journey-node small{font-size:.68rem}}
@media(max-width:980px){.master-header{height:92px;grid-template-columns:210px 1fr auto;border-radius:42px 46px 40px 48px}.brand img{width:198px;height:60px}.brand-arc{display:none}.glass-control{width:56px;height:56px}.glass-control .icon-svg{width:26px;height:26px}.hero{grid-template-columns:1fr;padding-top:48px}.hero-media{height:520px}.audience,.principles,.world-hero,.skills-hero,.lesson-grid,.practice-grid,.safety-surface{grid-template-columns:1fr}.audience-image,.principle-photo{height:470px}.journey-line-ui{padding-left:92px;overflow-x:auto;grid-template-columns:repeat(7,minmax(100px,1fr))}.world-hero>img{height:360px}.lesson-image{height:430px}.lesson-visual{height:380px}.task-visual{min-height:330px}.safety-image img{min-height:380px}.help-item{grid-template-columns:1fr}.help-item>div:last-child{justify-content:flex-start;flex-wrap:wrap}.footer{grid-template-columns:1fr 1fr}.support-options{grid-template-columns:1fr}.hero-float{right:18px}}
@media(max-width:720px){.master-header-wrap{padding:8px 8px 0}.master-header{height:78px;grid-template-columns:1fr auto;padding:8px 10px;border-radius:30px 34px 28px 36px}.brand img{width:164px;height:52px}.header-controls{gap:5px}.glass-control{width:48px;height:48px}.glass-control .icon-svg{width:23px;height:23px}.section-standard{padding:76px 14px}.section-wide,.world-page,.skills-page,.lesson-page{max-width:none;margin-left:0;margin-right:0}.hero{min-height:auto;padding:42px 14px 36px}.hero-copy h1{font-size:clamp(4rem,18vw,5.6rem)}.hero-copy>p{font-size:1.03rem}.hero-actions{flex-direction:column}.hero-actions .btn{width:100%}.hero-media{height:390px;border-radius:52px 34px 56px 38px;padding:10px}.hero-media>img{border-radius:44px 28px 48px 30px}.hero-float{left:18px;right:18px;bottom:18px;max-width:none}.audience{gap:34px}.audience-image{height:420px}.audience-facts{display:grid;grid-template-columns:1fr 1fr}.journey-line-ui{padding:20px 16px 16px 72px;min-height:118px;border-radius:30px}.journey-diamond{width:50px;height:50px;left:14px;top:33px;border-radius:14px}.journey-node span{width:34px;height:34px}.journey-line-ui::after{left:9%;top:50px}.guided-grid{grid-template-columns:1fr}.guided-card{grid-template-columns:52px 1fr;min-height:104px}.guided-card .mini-status{display:none}.section-head.split{display:block}.section-head.split .btn{margin-top:16px}.world-head{grid-template-columns:92px 1fr 24px;padding:10px}.world-image{height:92px;border-radius:22px 26px 20px 28px}.world-copy strong{font-size:1.45rem}.world-copy em{font-size:.82rem}.world-progress{display:none}.path-row{grid-template-columns:1fr 22px;gap:10px}.row-meta{display:none}.help-strip{grid-template-columns:62px 1fr;padding:26px 20px}.help-strip .btn{grid-column:1/-1;width:100%}.help-strip-icon{width:58px;height:58px}.principle-photo{height:430px}.world-page,.skills-page,.lesson-page{padding:20px 12px 64px}.world-hero,.skills-hero{padding:28px 20px;min-height:0;border-radius:36px 42px 34px 46px}.world-hero h1,.skills-hero h1{font-size:3.6rem}.world-hero>img{height:300px}.skill-stats{grid-template-columns:1fr 1fr}.lesson-top{align-items:flex-start}.lesson-title h1{font-size:2.65rem}.save-inline span{display:none}.save-inline{width:52px;padding:0;justify-content:center}.lesson-rail{padding:13px 8px 11px 58px;min-height:82px;overflow:hidden;grid-template-columns:repeat(7,1fr);border-radius:26px}.rail-diamond{width:42px;height:42px;left:9px;top:19px;border-radius:12px}.rail-diamond::after{font-size:17px}.rail-line{top:34px}.rail-step>span{width:28px;height:28px;font-size:.72rem}.rail-step small{display:none}.lesson-surface{padding:22px 16px;border-radius:36px 42px 34px 48px;min-height:0}.stage-copy h2{font-size:2.6rem}.lesson-image,.lesson-image.portrait{height:380px}.audio-row{flex-direction:column}.audio-btn{width:100%;min-width:0}.practice-stage{min-height:0}.task-visual{min-height:280px}.choices legend{font-size:1.35rem}.choice{min-height:64px}.lesson-bottom{flex-direction:column}.lesson-bottom .text-link{justify-content:center}.shop-ui{grid-template-columns:1fr 1fr}.transit-ui{grid-template-columns:64px 1fr}.transit-ui>div:last-child{grid-column:2}.safety-surface{padding:22px 16px;border-radius:36px 42px 34px 48px}.safety-content h2{font-size:2.6rem}.modal-backdrop{padding:8px}.modal-panel{padding:36px 18px 22px;border-radius:32px;max-height:calc(100vh - 16px)}.modal-panel h2{font-size:2.7rem}.language-grid{grid-template-columns:1fr}.footer{grid-template-columns:1fr;text-align:center;justify-items:center;padding-bottom:32px}.footer img{width:160px}}
@media(max-width:430px){.master-header{padding-left:8px;padding-right:8px}.header-controls{gap:2px}.glass-control{width:40px;height:40px}.glass-control .icon-svg{width:20px;height:20px}.brand img{width:120px}.audience-facts{grid-template-columns:1fr}.hero-copy h1{font-size:4.25rem}.skill-stats{grid-template-columns:1fr}.shop-ui{grid-template-columns:1fr}.task-icons{grid-template-columns:1fr}.world-copy em{display:none}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}