:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#f7fbff;background:#071b34}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(ellipse at 5% 5%,#173d68 0,transparent 40%),radial-gradient(ellipse at 90% 40%,#136e7e 0,transparent 35%),#071b34}button,input{font:inherit}.shell{max-width:1200px;margin:auto;padding:calc(16px + env(safe-area-inset-top)) 24px calc(18px + env(safe-area-inset-bottom));min-height:100vh;display:flex;flex-direction:column}header{display:flex;gap:24px;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:12px}.brand-mark{display:grid;place-items:center;width:46px;height:46px;border-radius:15px;background:linear-gradient(135deg,#5df3b1,#3db7ff);color:#06375d;font-size:32px;font-weight:900}.brand strong{font-size:21px;letter-spacing:.05em}.brand small{display:block;font-size:11px;color:#b6cce0}nav{display:flex;gap:8px;flex-wrap:wrap}.nav{background:transparent;border:1px solid #607b9b;color:#d9eaff;border-radius:12px;padding:10px 14px;cursor:pointer}.nav.active,.nav:hover{background:#e9faf4;color:#0a3354;border-color:#e9faf4}main{flex:1;padding:48px 0}.hero{text-align:center;max-width:660px;margin:40px auto}.hero h1{font-size:clamp(38px,6vw,76px);line-height:1.02;letter-spacing:-.05em;margin:12px 0}.hero h1 em{font-style:normal;color:#7af5bf}.hero p{color:#b8cde1;font-size:17px;line-height:1.5}.join-box,.panel{background:#fff;color:#10243d;border-radius:24px;padding:24px;box-shadow:0 24px 70px #00132a66}.join-box{max-width:540px;margin:32px auto;text-align:left}.join-box label,.panel label{font-weight:750;display:block;margin:12px 0 6px}.row{display:flex;gap:10px}.row>*{flex:1}input{width:100%;border:1px solid #bccddd;background:#f7fafc;border-radius:12px;padding:14px 16px;color:#10243d;outline:none}input:focus{border-color:#0284c7;box-shadow:0 0 0 3px #0ea5e933}.code{text-transform:uppercase;font-weight:800;letter-spacing:.24em;text-align:center;font-size:23px}.primary,.secondary,.danger{border:none;border-radius:12px;padding:13px 18px;font-weight:800;cursor:pointer}.primary{background:#006eb3;color:white}.primary:hover{background:#02598d}.secondary{background:#e7eff5;color:#16324d}.danger{background:#ffe4e6;color:#be123c}.muted{color:#688098}.eyebrow{color:#047c9e;font-weight:850;letter-spacing:.13em;text-transform:uppercase;font-size:12px}.container{max-width:860px;margin:auto}.container h1{font-size:34px;margin:0 0 8px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.tile{border:1px solid #d7e4ed;border-radius:18px;padding:18px;background:#f7fafc}.tile h3{margin:8px 0}.tile p{color:#60748a}.question{font-size:clamp(20px,3vw,31px);font-weight:750;line-height:1.35;margin:24px 0}.choices{display:grid;gap:10px}.choice{display:flex;gap:12px;align-items:center;text-align:left;background:#f3f8fc;border:2px solid #d5e3ed;border-radius:14px;padding:15px;color:#132c43;cursor:pointer}.choice.selected{border-color:#0798cf;background:#ddf8ff}.choice .key{width:30px;height:30px;flex:none;display:grid;place-items:center;border-radius:8px;background:#d5e9f3;font-weight:900}.progress{height:10px;border-radius:99px;background:#e0e9f0;overflow:hidden}.progress i{display:block;height:100%;background:linear-gradient(90deg,#08a9c5,#6adea9)}.status{display:flex;justify-content:space-between;gap:14px;color:#668199;margin:14px 0}.leader{display:flex;justify-content:space-between;border-bottom:1px solid #e5edf3;padding:14px 4px}.leader:last-child{border:0}.shop-item{display:flex;align-items:center;gap:14px;justify-content:space-between}.shop-icon{font-size:36px;background:#e1f8ef;padding:10px 18px;border-radius:14px}.hidden{display:none!important}.hint{font-size:13px;color:#75899d;line-height:1.5}.warning{padding:12px 15px;border-radius:12px;background:#fff1df;color:#92400e}.positive{color:#0c9c65;font-weight:800}.negative{color:#d34658;font-weight:800}footer{text-align:center;color:#6e8aab;font-size:12px;padding-top:18px}#toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#172b40;color:#fff;padding:12px 18px;border-radius:12px;box-shadow:0 10px 30px #0007;display:none;max-width:90vw;z-index:20}@media(max-width:700px){.shell{padding-left:14px;padding-right:14px}header{align-items:flex-start;flex-direction:column}nav{width:100%;overflow:auto;flex-wrap:nowrap}.nav{white-space:nowrap;font-size:12px}.hero{margin:12px auto}.join-box,.panel{padding:18px}.row{flex-direction:column}main{padding:26px 0}}.rich-text{white-space:pre-wrap;line-height:1.6;font-size:18px}.rich-image{display:block;max-width:100%;max-height:420px;object-fit:contain;margin:14px 0}.table-scroll{overflow-x:auto;margin:14px 0}.table-scroll table{border-collapse:collapse;width:100%;table-layout:fixed}.table-scroll td{border:1px solid #9eb3c3;padding:8px;overflow-wrap:anywhere}
:root{--go-top-gold:#ffd76a;--go-top-silver:#e3edf7;--go-top-bronze:#e8a06b}
.rank-honor{display:inline-block;font-size:11px;font-weight:900;letter-spacing:.16em;color:#8fb4d8}
.leader.go-top{border-left:4px solid;padding-left:12px;border-radius:8px;background:linear-gradient(90deg,#0d2b4d,transparent)}
.leader.go-top1{border-color:var(--go-top-gold)}.leader.go-top1 .rank-honor{color:var(--go-top-gold)}
.leader.go-top2{border-color:var(--go-top-silver)}.leader.go-top2 .rank-honor{color:var(--go-top-silver)}
.leader.go-top3{border-color:var(--go-top-bronze)}.leader.go-top3 .rank-honor{color:var(--go-top-bronze)}
.rank-name{font-size:1.05em}
.go-top1 .rank-name,.go-top2 .rank-name,.go-top3 .rank-name{animation:go-glow 2.6s ease-in-out infinite}
.go-top1 .rank-name{background:linear-gradient(90deg,#f5b93d,#fff6d8,#ffd76a,#fff6d8,#f5b93d);background-size:200% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;text-shadow:none}
.go-top2 .rank-name{color:var(--go-top-silver)}.go-top3 .rank-name{color:var(--go-top-bronze)}
@keyframes go-glow{0%,100%{filter:brightness(1)}50%{filter:brightness(1.35)}}
@keyframes go-shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}
.go-top1 .rank-name{animation:go-glow 2.6s ease-in-out infinite,go-shimmer 3.2s linear infinite}

/* Ẩn các mục chỉ dành cho tài khoản đăng nhập */
nav .member{display:none}
nav .member.accounted{display:inline-block}
nav .nav{transition:all .18s ease}
nav .nav:hover{transform:translateY(-1px)}

/* ===== Bảng xếp hạng ===== */
.rank-wrap .eyebrow{color:#5eead4}
.podium{display:grid;grid-template-columns:1fr 1.15fr 1fr;gap:14px;align-items:end;margin:26px 0 10px}
.pod{position:relative;display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px;padding:20px 12px 16px;border-radius:20px 20px 24px 24px;color:#eaf4ff;border:1px solid #2c5c85;border-bottom:4px solid #2c5c85;background:linear-gradient(180deg,#12365c,#0c2743);box-shadow:0 18px 40px #00193a55}
.pod-2{padding-bottom:34px}
.pod-1{padding:26px 14px 44px;background:linear-gradient(180deg,#1d4d7e,#0f2f52);border-color:#ffd76a;border-bottom-color:var(--go-top-gold);box-shadow:0 24px 60px #f5b93d33}
.pod-3{padding-bottom:22px}
.pod .medal{font-size:34px;filter:drop-shadow(0 4px 10px #0006)}
.pod-1 .medal{font-size:44px}
.honor-label{font-size:10px;font-weight:900;letter-spacing:.2em;color:#8fb4d8}
.pod-1 .honor-label{color:var(--go-top-gold)}
.pod-2 .honor-label{color:var(--go-top-silver)}
.pod-3 .honor-label{color:var(--go-top-bronze)}
.pod-name{font-size:15px;font-weight:800;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pod-1 .pod-name{font-size:18px;background:linear-gradient(90deg,#f5b93d,#fff6d8,#ffd76a,#fff6d8,#f5b93d);background-size:200% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:go-glow 2.6s ease-in-out infinite,go-shimmer 3.2s linear infinite}
.pod-2 .pod-name{color:var(--go-top-silver)}.pod-3 .pod-name{color:var(--go-top-bronze)}
.pod-coins{font-size:13px;font-weight:800;color:#bfe3ff}
.pod-1 .pod-coins{color:#ffe9a8;font-size:15px}
.pod.me{outline:2px solid #34d399;outline-offset:2px}
.rank-list{margin:18px 0 6px}
.rrow{display:flex;align-items:center;gap:12px;border-radius:14px;border:1px solid #24507a;background:#0d2b4d;padding:11px 16px;margin:8px 0}
.rrow .rnum{display:grid;place-items:center;min-width:28px;height:28px;border-radius:9px;background:#173d5f;color:#9fc1e0;font-size:12px;font-weight:800}
.rrow .rname{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:650}
.rrow.me{border-color:#34d399;background:#0d3a35}
.rrow.me .rnum{background:#065f46;color:#a7f3d0}
.rank-foot{margin-top:18px;color:#9fc1e0;font-size:14px}
button.link{background:none;border:none;color:#7dd3fc;cursor:pointer;font-weight:800;padding:0 4px}
button.link:hover{text-decoration:underline}

/* ===== Nâng tổng thể ===== */
.join-box .code{font-size:22px;text-align:center}
.join-box{animation:rise .5s ease}
.primary,.secondary,.nav{transition:transform .15s ease,box-shadow .15s ease,background .15s ease}
.primary:hover:not(:disabled),.secondary:hover:not(:disabled),.nav:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 10px 24px #0003}
.tile{transition:transform .18s ease,box-shadow .18s ease}
.tile:hover{transform:translateY(-3px);box-shadow:0 20px 44px #00102233}
.shop-item{display:flex;align-items:center;justify-content:space-between;gap:10px}
.shop-icon{display:grid;place-items:center;width:52px;height:52px;border-radius:16px;background:linear-gradient(135deg,#163f66,#0a2036);font-size:28px;box-shadow:inset 0 0 0 1px #2c5c85}
.leader .go-top1 .rank-name,.leader .go-top2 .rank-name,.leader .go-top3 .rank-name{display:inline-block}
@keyframes rise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}