:root{--green:#163f2e;--green2:#235d43;--green3:#0e2d20;--gold:#d0a13a;--gold2:#f0cf80;--cream:#f7f4e9;--paper:#fffef9;--ink:#15231d;--muted:#69766f;--line:#e6e2d6;--danger:#c64c43;--success:#2f8a57;--shadow:0 14px 36px rgba(18,55,40,.12)}*{box-sizing:border-box}html,body{margin:0;background:#ecefe8;color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,input,select{font:inherit}.app-shell{width:min(100%,560px);margin:auto;min-height:100vh;background:var(--cream);position:relative;padding-bottom:86px}.topbar{height:68px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;background:rgba(255,254,249,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}.brand{display:flex;align-items:center;gap:10px}.brand-crest{width:40px;height:44px;object-fit:contain;display:block;filter:drop-shadow(0 2px 4px rgba(86,53,0,.14));flex:0 0 auto}.brand strong{font-size:13px;letter-spacing:.11em;display:block;color:var(--green);font-weight:950}.brand span{display:block;color:var(--gold);font-size:10px;font-weight:900;letter-spacing:.18em}.top-stats{display:flex;align-items:center;gap:6px}.stat{border:0;background:#f4f1e8;border-radius:12px;padding:7px 9px;color:var(--ink);font-size:13px}.stat b{color:var(--green)}.view{padding:18px 16px 26px;min-height:calc(100vh - 154px)}.hero-card{background:linear-gradient(140deg,var(--green3),var(--green));border-radius:26px;padding:22px;color:#fff;box-shadow:var(--shadow);position:relative;overflow:hidden}.hero-card:after{content:"";position:absolute;width:170px;height:170px;border-radius:50%;right:-65px;top:-70px;background:rgba(208,161,58,.18)}.eyebrow{font-size:11px;font-weight:900;letter-spacing:.14em;color:var(--gold2);text-transform:uppercase}.hero-card h1{font-size:27px;line-height:1.05;margin:8px 0 10px;max-width:370px}.hero-card p{margin:0;color:#dfe9e3;font-size:14px;line-height:1.5;max-width:390px}.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.btn{min-height:44px;border:0;border-radius:14px;padding:0 16px;font-weight:850;cursor:pointer}.btn.gold{background:var(--gold);color:#1e251f;box-shadow:inset 0 -4px 0 rgba(82,53,0,.22)}.btn.light{background:#fff;color:var(--green)}.btn.outline{background:transparent;border:1px solid rgba(255,255,255,.35);color:#fff}.section-title{display:flex;align-items:end;justify-content:space-between;gap:12px;margin:24px 2px 12px}.section-title h2{margin:0;font-size:20px}.section-title p{margin:4px 0 0;color:var(--muted);font-size:13px}.link-btn{border:0;background:none;color:var(--green2);font-weight:800}.mission{display:grid;grid-template-columns:56px 1fr auto;align-items:center;gap:12px;background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:14px;box-shadow:0 6px 16px rgba(15,45,32,.05)}.mission-icon{width:56px;height:56px;border-radius:18px;background:#ecf4ee;display:grid;place-items:center;font-size:28px}.mission b{display:block;font-size:14px}.mission small{color:var(--muted);line-height:1.35;display:block;margin-top:3px}.pill{border-radius:999px;background:#f1eee5;padding:7px 10px;font-size:12px;font-weight:800;white-space:nowrap}.path{position:relative;padding:10px 0 18px}.path:before{content:"";position:absolute;left:50%;top:20px;bottom:22px;width:7px;border-radius:99px;background:#d9ddd5;transform:translateX(-50%)}.lesson-row{display:flex;position:relative;z-index:2;margin:22px 0}.lesson-row.left{justify-content:flex-start;padding-left:16%}.lesson-row.center{justify-content:center}.lesson-row.right{justify-content:flex-end;padding-right:16%}.lesson-node{width:94px;height:94px;border-radius:32px;border:0;background:#d9ddd5;color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;box-shadow:inset 0 -7px 0 rgba(0,0,0,.11),0 7px 16px rgba(28,58,43,.10);position:relative}.lesson-node.done{background:var(--green2)}.lesson-node.current{background:var(--gold);color:#283127;outline:7px solid rgba(208,161,58,.15)}.lesson-node.locked{filter:grayscale(.4)}.lesson-node span{font-size:30px}.lesson-node small{font-size:10px;font-weight:900;max-width:76px;line-height:1.1}.lesson-node .stars{position:absolute;top:-15px;font-size:13px;color:#f8cf4d;letter-spacing:-2px}.topic-card{background:var(--paper);border:1px solid var(--line);border-radius:19px;padding:15px;display:flex;align-items:center;gap:12px;margin-bottom:10px}.topic-icon{width:50px;height:50px;border-radius:16px;background:#eef2eb;display:grid;place-items:center;font-size:24px;flex:0 0 auto}.topic-card h3{margin:0;font-size:15px}.topic-card p{margin:3px 0 0;color:var(--muted);font-size:12px}.progress{height:8px;background:#ecebe5;border-radius:99px;overflow:hidden;margin-top:9px}.progress>i{height:100%;display:block;background:var(--green2);border-radius:99px}.bottom-nav{position:fixed;left:50%;bottom:0;transform:translateX(-50%);width:min(100%,560px);height:74px;padding:8px 8px max(8px,env(safe-area-inset-bottom));display:grid;grid-template-columns:repeat(5,1fr);background:rgba(255,254,249,.97);border-top:1px solid var(--line);z-index:30;backdrop-filter:blur(12px)}.nav-item{border:0;background:transparent;border-radius:14px;color:#7a867f;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px}.nav-item span{font-size:21px}.nav-item small{font-size:10px;font-weight:800}.nav-item.active{background:#edf4ef;color:var(--green)}.cards-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.mini-card{background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:16px;min-height:130px}.mini-card .big{font-size:30px}.mini-card h3{font-size:15px;margin:9px 0 4px}.mini-card p{font-size:12px;color:var(--muted);margin:0;line-height:1.4}.challenge-card{background:var(--paper);border:1px solid var(--line);border-radius:22px;padding:17px;margin-bottom:12px}.challenge-head{display:flex;align-items:center;justify-content:space-between;gap:10px}.challenge-head b{font-size:15px}.challenge-card p{color:var(--muted);font-size:13px;line-height:1.45}.xp{font-size:12px;background:#fff1c8;color:#7a5810;border-radius:999px;padding:6px 9px;font-weight:900}.farm-stage{background:linear-gradient(#ddecdf,#f6f0db);border-radius:24px;padding:18px;border:1px solid #d7ded4}.field{height:180px;border-radius:18px;background:repeating-linear-gradient(100deg,#5d8b50 0 10px,#79a765 10px 18px);position:relative;overflow:hidden}.field:before{content:"☀️";position:absolute;right:16px;top:14px;font-size:30px}.field:after{content:"🌱   🌱   🌱   🌱   🌱\A 🌱   🌱   🌱   🌱\A 🌱   🌱   🌱   🌱   🌱";white-space:pre;position:absolute;left:18px;bottom:18px;font-size:25px;line-height:1.5}.control-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}.control label{font-size:11px;color:var(--muted);font-weight:800;display:block;margin-bottom:5px}.control select,.control input{width:100%;min-height:44px;border:1px solid var(--line);background:#fff;border-radius:13px;padding:0 11px;color:var(--ink)}.result-box{margin-top:14px;border-radius:16px;background:#fff;padding:14px;font-size:13px;line-height:1.5;border:1px solid var(--line)}.tutor-intro{display:flex;gap:12px;align-items:center;background:var(--paper);border:1px solid var(--line);padding:15px;border-radius:20px}.avatar{width:56px;height:56px;border-radius:18px;background:var(--green);color:#fff;display:grid;place-items:center;font-size:28px}.chat{margin-top:14px;display:flex;flex-direction:column;gap:10px}.bubble{max-width:86%;padding:12px 14px;border-radius:18px;font-size:13px;line-height:1.5}.bubble.bot{background:#fff;border:1px solid var(--line);align-self:flex-start}.bubble.user{background:var(--green);color:#fff;align-self:flex-end}.chat-form{display:flex;gap:8px;margin-top:12px}.chat-form input{flex:1;min-width:0;min-height:46px;border:1px solid var(--line);border-radius:14px;padding:0 13px;background:#fff}.chat-form button{width:48px;border:0;border-radius:14px;background:var(--gold);font-size:20px}.skill{margin:13px 0}.skill-head{display:flex;justify-content:space-between;font-size:13px;font-weight:800}.profile-hero{text-align:center;background:var(--paper);border:1px solid var(--line);border-radius:24px;padding:22px}.profile-avatar{width:78px;height:78px;border-radius:26px;background:var(--green);color:#fff;margin:auto;display:grid;place-items:center;font-size:34px}.profile-hero h2{margin:10px 0 3px}.profile-hero p{margin:0;color:var(--muted);font-size:13px}.sheet{width:min(94vw,520px);max-height:86vh;border:0;border-radius:28px 28px 0 0;padding:0;margin:auto auto 0;background:var(--paper);box-shadow:0 -20px 70px rgba(0,0,0,.18)}.sheet::backdrop{background:rgba(4,20,13,.45);backdrop-filter:blur(3px)}.sheet-head{display:flex;align-items:center;gap:12px;padding:15px 16px;border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--paper);z-index:2}.sheet-head>div{font-weight:900}.icon-btn{width:38px;height:38px;border-radius:13px;border:1px solid var(--line);background:#fff;font-size:24px}.sheet-body{padding:16px;overflow:auto;max-height:75vh}.subtopics{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 18px}.subtopic{background:#edf3ef;color:var(--green);padding:8px 10px;border-radius:10px;font-size:12px;font-weight:800}.quiz-question{font-size:18px;font-weight:850;line-height:1.3;margin:8px 0 16px}.answers{display:grid;gap:10px}.answer{min-height:52px;text-align:left;background:#fff;border:2px solid var(--line);border-radius:15px;padding:12px;font-weight:750;color:var(--ink)}.answer.correct{border-color:var(--success);background:#e8f5ed}.answer.wrong{border-color:var(--danger);background:#faecea}.explain{margin-top:13px;padding:13px;border-radius:15px;background:#f1f4ef;font-size:13px;line-height:1.5}.calc-card{background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:16px;margin-bottom:12px}.calc-card h3{margin:0 0 4px}.calc-card p{margin:0 0 14px;color:var(--muted);font-size:12px}.calc-row{display:grid;grid-template-columns:1fr 1fr;gap:9px}.calc-card input{width:100%;min-height:44px;border:1px solid var(--line);border-radius:12px;padding:0 10px}.calc-result{margin-top:10px;font-weight:900;color:var(--green)}.toast{position:fixed;left:50%;bottom:92px;transform:translateX(-50%) translateY(20px);opacity:0;background:#142a20;color:white;border-radius:14px;padding:11px 16px;font-size:13px;font-weight:800;transition:.2s;z-index:80;pointer-events:none;max-width:86%;text-align:center}.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}.soil-hero{display:grid;grid-template-columns:1fr 92px;gap:14px;align-items:center;background:linear-gradient(145deg,var(--green3),var(--green2));color:#fff;padding:17px;border-radius:22px;margin-bottom:12px}.soil-hero span,.soil-lesson-head span{font-size:10px;font-weight:900;letter-spacing:.12em;color:var(--gold2)}.soil-hero h2{font-size:20px;line-height:1.1;margin:5px 0 7px}.soil-hero p{font-size:12px;color:#dce8e0;margin:0;line-height:1.45}.soil-ring{width:82px;height:82px;border-radius:50%;display:grid;place-items:center;align-content:center;background:conic-gradient(var(--gold) calc(var(--p)*1%),rgba(255,255,255,.16) 0);position:relative}.soil-ring:after{content:"";position:absolute;inset:8px;border-radius:50%;background:var(--green)}.soil-ring b,.soil-ring small{z-index:1}.soil-ring b{font-size:17px}.soil-ring small{font-size:9px;color:#dce8e0}.soil-tabs{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:10px 0 16px}.soil-tabs button{min-height:44px;border:1px solid var(--line);border-radius:13px;background:#fff;font-weight:850;color:var(--green)}.soil-path{display:grid;gap:9px}.soil-stage{display:grid;grid-template-columns:28px 42px minmax(0,1fr) auto;gap:9px;align-items:center;text-align:left;border:1px solid var(--line);background:#fff;border-radius:17px;padding:10px}.soil-stage.done{background:#eef6f0;border-color:#cfe4d5}.soil-index{width:27px;height:27px;border-radius:50%;display:grid;place-items:center;background:#e8ebe5;color:var(--green);font-size:11px;font-weight:900}.soil-stage.done .soil-index{background:var(--green2);color:#fff}.soil-ico{font-size:24px}.soil-copy{min-width:0}.soil-copy b{display:block;font-size:13px}.soil-copy small{display:block;color:var(--muted);font-size:10px;line-height:1.35;margin-top:2px}.soil-xp{font-size:9px;font-weight:900;color:#8a661b;background:#fff1c8;border-radius:999px;padding:5px 6px}.soil-source,.soil-note{font-size:11px;line-height:1.5;color:var(--muted);background:#f3f1e9;border-radius:13px;padding:11px;margin-top:12px}.soil-lesson-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.soil-lesson-head span{color:#8a661b}.soil-lesson-head b{font-size:11px;background:#fff1c8;padding:5px 8px;border-radius:999px}.soil-concept{background:#f1f6f2;border-left:4px solid var(--green2);padding:13px;border-radius:0 14px 14px 0;margin-bottom:12px}.soil-concept h3{font-size:15px;margin:0 0 5px}.soil-concept p{font-size:12px;line-height:1.5;color:#526159;margin:0}.soil-complete,.soil-back{width:100%;margin-top:14px}.soil-back{background:transparent;color:var(--green);border:1px solid var(--line)}.soil-four{display:grid;grid-template-columns:1fr 1fr;gap:8px}.soil-four button{min-height:76px;border:1px solid var(--line);background:#fff;border-radius:15px;font-size:22px}.soil-four b{display:block;font-size:11px;margin-top:4px}.soil-sliders label{display:block;font-size:11px;font-weight:850;margin:10px 0}.soil-sliders input[type=range],.ph-lab input[type=range],.water-demo input[type=range]{width:100%;accent-color:var(--green2)}.soil-visual{padding:12px;background:#f4f0e4;border-radius:16px;text-align:center}.soil-grain{display:inline-grid;place-items:center;border-radius:50%;margin:4px;font-size:8px;font-weight:900}.soil-grain.sand{width:68px;height:68px;background:#d8b26b}.soil-grain.silt{width:48px;height:48px;background:#b69d73}.soil-grain.clay{width:34px;height:34px;background:#9b6f56;color:#fff}.soil-visual p{font-size:12px}.soil-calc-mini{margin-top:12px;border:1px solid var(--line);padding:12px;border-radius:15px}.soil-calc-mini>b{font-size:12px}.soil-calc-mini .btn{margin-top:8px}.soil-calc-mini #porOut{font-size:12px;font-weight:900;margin-top:8px;color:var(--green)}.water-demo{text-align:center}.water-column{width:90px;height:180px;border:4px solid #93745b;border-radius:12px 12px 25px 25px;margin:8px auto 12px;position:relative;overflow:hidden;background:linear-gradient(90deg,#d5b88b,#b99162)}.water-column i{position:absolute;bottom:0;left:0;right:0;background:rgba(69,146,200,.65);transition:.2s}.ctc-board{text-align:center;background:#f4f1e8;border-radius:18px;padding:15px}.colloid{background:#9b6f56;color:white;border-radius:50%;padding:28px 8px;font-size:19px;letter-spacing:7px}.ion-row{display:flex;justify-content:center;flex-wrap:wrap;gap:7px;margin:12px 0}.ion-row button{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px;font-weight:900}.ctc-board #ionOut{font-size:11px;color:var(--muted)}.ph-lab{background:linear-gradient(90deg,#f5c2bc,#f1df94,#bddaa9);padding:14px;border-radius:17px}.ph-scale{display:flex;justify-content:space-between;font-size:10px;font-weight:900}.soil-analysis-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin:10px 0}.soil-analysis-grid label{font-size:10px;color:var(--muted);font-weight:850}.soil-analysis-grid input{width:100%;min-height:42px;border:1px solid var(--line);border-radius:11px;padding:0 9px;margin-top:4px}.soil-metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:7px;margin-top:10px}.soil-metrics>div{padding:10px;border-radius:13px;background:#eef4ef}.soil-metrics span,.soil-metrics small{display:block;font-size:9px;color:var(--muted)}.soil-metrics b{display:block;font-size:17px;color:var(--green)}.om-cycle{display:flex;align-items:center;gap:5px;overflow-x:auto;padding:5px 0}.om-cycle button{min-width:90px;min-height:64px;border:1px solid var(--line);background:#fff;border-radius:13px;font-size:12px;font-weight:850}.field-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;background:repeating-linear-gradient(100deg,#628852 0 12px,#789c64 12px 22px);padding:14px;border-radius:18px}.field-point{height:42px;border:2px solid rgba(255,255,255,.7);background:rgba(255,255,255,.25);border-radius:50%;color:white;font-size:20px}.field-point.picked{background:var(--gold);border-color:#fff;color:#273125}.lab-report{display:grid;grid-template-columns:repeat(2,1fr);gap:7px}.lab-report>div{padding:10px;border:1px solid var(--line);border-radius:12px;background:#fff}.lab-report span{font-size:10px;color:var(--muted);display:block}.lab-report b{font-size:14px}.compare-soil{display:grid;grid-template-columns:1fr 1fr;gap:8px}.compare-soil button{border:1px solid var(--line);border-radius:15px;background:#fff;padding:14px;text-align:left}.compare-soil b,.compare-soil small{display:block}.compare-soil small{color:var(--muted);font-size:10px;margin-top:3px}.soil-score{text-align:center;padding:20px;background:#eef4ef;border-radius:20px}.soil-score b{display:block;font-size:42px;color:var(--green)}.soil-score span{font-size:13px;font-weight:800}.boss-meter{height:9px;background:#e8e9e3;border-radius:99px;overflow:hidden;margin-bottom:14px}.boss-meter i{display:block;height:100%;background:var(--gold);transition:.25s}@media(max-width:380px){.soil-stage{grid-template-columns:25px 36px minmax(0,1fr)}.soil-xp{display:none}.soil-hero{grid-template-columns:1fr 76px}.soil-ring{width:70px;height:70px}.soil-analysis-grid{grid-template-columns:1fr 1fr}}@media(min-width:700px){body{padding:18px 0}.app-shell{min-height:calc(100vh - 36px);border-radius:28px;overflow:hidden;box-shadow:0 28px 80px rgba(20,48,35,.18)}.bottom-nav{bottom:18px;border-radius:0 0 28px 28px}.topbar{border-radius:28px 28px 0 0}}