:root{
  --bg:#0E1116; --surface:#161B22; --surface2:#1C232D; --line:#232A34;
  --text:#E6EDF3; --muted:#8B98A5; --up:#26D07C; --down:#F0616D; --flat:#8B98A5;
  --gold:#F5B841;
  --mono:'JetBrains Mono',ui-monospace,monospace;
  --disp:'Space Grotesk',system-ui,sans-serif;
  --body:'Inter',system-ui,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--body);font-size:15px;line-height:1.5}
a{color:inherit;text-decoration:none}
.wrap{max-width:1080px;margin:0 auto;padding:0 18px}

/* header */
header{position:sticky;top:0;z-index:10;background:rgba(14,17,22,.82);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:22px;height:60px}
.logo{font-family:var(--disp);font-weight:700;font-size:20px;letter-spacing:-.5px;display:flex;align-items:center;gap:8px}
.logo .dot{width:9px;height:9px;border-radius:50%;background:var(--gold);box-shadow:0 0 12px var(--gold)}
nav{display:flex;gap:18px;font-size:14px}
nav a{color:var(--muted);padding:4px 0;border-bottom:2px solid transparent}
nav a.on,nav a:hover{color:var(--text);border-color:var(--gold)}
.spacer{flex:1}

/* pulse */
.pulse{margin:22px 0 8px;padding:18px 20px;background:var(--surface);border:1px solid var(--line);border-radius:14px}
.pulse h1{margin:0 0 3px;font-family:var(--disp);font-size:15px;font-weight:500;color:var(--muted);letter-spacing:.3px;text-transform:uppercase}
.pulse .lead{font-family:var(--disp);font-size:26px;font-weight:700;letter-spacing:-.5px;margin:2px 0 14px}
.balance{height:12px;border-radius:6px;overflow:hidden;display:flex;background:var(--surface2)}
.balance i{display:block;height:100%}
.balance .b-up{background:var(--up)} .balance .b-down{background:var(--down)} .balance .b-flat{background:#3A4552}
.balance-legend{display:flex;gap:16px;margin-top:9px;font-family:var(--mono);font-size:12px;color:var(--muted)}
.balance-legend b{color:var(--text)}
.up-c{color:var(--up)} .down-c{color:var(--down)} .flat-c{color:var(--flat)}

/* section */
.sec-h{display:flex;align-items:baseline;gap:10px;margin:26px 0 12px}
.sec-h h2{font-family:var(--disp);font-size:17px;font-weight:600;margin:0}
.sec-h span{font-family:var(--mono);font-size:12px;color:var(--muted)}

/* signal */
.sig{display:flex;background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden;margin-bottom:10px;transition:border-color .15s}
.sig:hover{border-color:#31414f}
.spine{width:4px;flex:none}
.spine.up{background:var(--up)} .spine.down{background:var(--down)} .spine.flat{background:#3A4552}
.sig-in{padding:13px 16px;flex:1;min-width:0}
.sig-top{display:flex;align-items:flex-start;gap:9px}
.sig-ico{font-size:12px;margin-top:3px}
.sig-ico.up{color:var(--up)} .sig-ico.down{color:var(--down)} .sig-ico.flat{color:var(--flat)}
.sig-sum{font-family:var(--disp);font-weight:500;font-size:15.5px;line-height:1.35}
.sig-why{color:var(--muted);font-size:13px;margin:5px 0 0}
.sig-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:11px;font-family:var(--mono);font-size:12px;color:var(--muted)}
.chip{font-family:var(--mono);font-size:11px;color:var(--gold);border:1px solid #3a3016;background:#1e1a0d;padding:1px 7px;border-radius:20px}
.heat{display:flex;align-items:center;gap:7px}
.heat .track{width:64px;height:5px;border-radius:3px;background:var(--surface2);overflow:hidden}
.heat .fill{height:100%;background:linear-gradient(90deg,#8a6a1e,var(--gold))}
.heat b{color:var(--text)}
.move.pos{color:var(--up)} .move.neg{color:var(--down)}
.src{margin-left:auto;display:flex;gap:12px;align-items:center}
.src a{color:var(--muted);border-bottom:1px dotted #3a4552}
.cta{font-family:var(--mono);font-size:11px;color:#0E1116;background:var(--gold);padding:3px 10px;border-radius:6px;font-weight:600}
.cta:hover{filter:brightness(1.08)}

/* coin rail */
.rail{display:flex;flex-wrap:wrap;gap:8px;margin:4px 0 2px}
.coin-tag{font-family:var(--mono);font-size:12px;padding:5px 11px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--muted)}
.coin-tag:hover{color:var(--text);border-color:#31414f}
.coin-tag b{color:var(--text)}
.coin-tag .u{color:var(--up)} .coin-tag .d{color:var(--down)}

/* coin page head */
.coin-hero{margin:22px 0 6px;padding:20px;background:var(--surface);border:1px solid var(--line);border-radius:14px;display:flex;align-items:baseline;gap:16px}
.coin-hero .sym{font-family:var(--disp);font-size:30px;font-weight:700;letter-spacing:-1px}
.coin-hero .px{font-family:var(--mono);font-size:22px}

/* filters */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}
.filters a{font-family:var(--mono);font-size:12px;padding:5px 11px;border:1px solid var(--line);border-radius:8px;color:var(--muted)}
.filters a.on{color:#0E1116;background:var(--gold);border-color:var(--gold);font-weight:600}

/* admin */
.admin{max-width:560px;margin:26px auto}
.admin h2{font-family:var(--disp)}
.admin label{display:block;font-family:var(--mono);font-size:12px;color:var(--muted);margin:16px 0 5px;text-transform:uppercase;letter-spacing:.4px}
.admin input,.admin select{width:100%;padding:10px 12px;background:var(--surface2);border:1px solid var(--line);border-radius:8px;color:var(--text);font-family:var(--mono);font-size:13px}
.admin button{margin-top:22px;width:100%;padding:12px;background:var(--gold);color:#0E1116;border:0;border-radius:8px;font-family:var(--disp);font-weight:600;font-size:15px;cursor:pointer}
.saved{margin-top:14px;color:var(--up);font-family:var(--mono);font-size:13px}

.empty{padding:40px 20px;text-align:center;color:var(--muted);font-family:var(--mono);font-size:13px;border:1px dashed var(--line);border-radius:12px}
footer{margin:40px 0 30px;color:var(--muted);font-family:var(--mono);font-size:12px;text-align:center;border-top:1px solid var(--line);padding-top:18px}
@media(max-width:620px){.sig-meta{gap:10px}.src{margin-left:0;width:100%}}

/* price ticker */
.tickerbar{border-bottom:1px solid var(--line);background:var(--surface)}
.ticker{display:flex;gap:22px;overflow-x:auto;padding:9px 0;font-family:var(--mono);font-size:12.5px;color:var(--muted);white-space:nowrap;scrollbar-width:none}
.ticker::-webkit-scrollbar{display:none}
.ticker .tk b{color:var(--text);margin-right:2px}
.ticker .up-c{color:var(--up)} .ticker .down-c{color:var(--down)} .ticker .flat{color:var(--flat)}

/* telegram button + intro */
.tg-btn{font-family:var(--mono);font-size:12.5px;color:#0E1116;background:#229ED9;padding:6px 13px;border-radius:8px;font-weight:600;white-space:nowrap}
.tg-btn:hover{filter:brightness(1.07)}
.intro{color:var(--muted);font-size:13.5px;line-height:1.5;margin:20px 0 -4px}

/* coins index */
.coingrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:12px;margin-top:6px}
.ccard{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px 15px;transition:border-color .15s}
.ccard:hover{border-color:#31414f}
.ccard-top{display:flex;justify-content:space-between;align-items:baseline}
.csym{font-family:var(--disp);font-weight:700;font-size:19px}
.cnum{font-family:var(--mono);font-size:11px;color:var(--muted)}
.cbar{height:6px;border-radius:3px;overflow:hidden;display:flex;background:var(--surface2);margin:11px 0 8px}
.cbar i{display:block;height:100%}
.cbar .b-up{background:var(--up)} .cbar .b-down{background:var(--down)}
.cmeta{display:flex;gap:12px;font-family:var(--mono);font-size:12px;color:var(--muted)}
.cmeta .cago{margin-left:auto}

/* ============ MOBILE ============ */
@media (max-width: 680px){
  .wrap{padding:0 14px}

  /* header: logo trái + Telegram phải (hàng 1), menu cuộn ngang (hàng 2) */
  .bar{height:auto;flex-wrap:wrap;gap:9px 14px;padding:10px 0}
  .logo{font-size:18px;order:1}
  .tg-btn{order:2;margin-left:auto;padding:5px 11px;font-size:12px}
  .spacer{display:none}
  nav{order:3;width:100%;gap:16px;font-size:13.5px;overflow-x:auto;white-space:nowrap;scrollbar-width:none}
  nav::-webkit-scrollbar{display:none}

  .tickerbar .ticker{gap:16px;font-size:12px}

  .pulse{padding:15px;margin:16px 0 6px;border-radius:12px}
  .pulse h1{font-size:13px}
  .pulse .lead{font-size:21px;margin-bottom:12px}
  .balance-legend{flex-wrap:wrap;gap:7px 14px}

  .rail{gap:7px}
  .coin-tag{font-size:11.5px;padding:5px 9px}

  .sec-h{margin:22px 0 10px}
  .sec-h h2{font-size:16px}

  .sig-in{padding:12px 13px}
  .sig-sum{font-size:15px;line-height:1.35}
  .sig-why{font-size:12.5px}
  .sig-meta{gap:8px 12px;margin-top:10px}
  .src{margin-left:0;width:100%;justify-content:flex-start;gap:12px}

  .coingrid{grid-template-columns:repeat(2,1fr);gap:10px}
  .ccard{padding:12px 13px}
  .csym{font-size:17px}

  .coin-hero{flex-wrap:wrap;gap:6px 14px;padding:16px}
  .coin-hero .sym{font-size:25px}
  .coin-hero .px{font-size:18px}
  .coin-hero .src{width:auto;margin-left:auto}

  .filters{gap:7px;margin:14px 0}
  .admin{margin:18px auto}
  footer{margin:30px 0 24px}
}

/* ============ POLISH PASS — chính chủ ============ */
:root{--shadow:0 6px 24px rgba(0,0,0,.30);--shadow-sm:0 2px 10px rgba(0,0,0,.18)}
html{scroll-behavior:smooth}
body{-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
::selection{background:rgba(245,184,65,.25)}
*{scrollbar-color:#2a333d transparent}

/* header: chiều sâu + chấm vàng "live" nhấp nháy */
header{box-shadow:0 1px 0 rgba(255,255,255,.02),0 8px 28px rgba(0,0,0,.32)}
.logo .dot{animation:livepulse 2.2s ease-in-out infinite}
@keyframes livepulse{0%,100%{box-shadow:0 0 0 0 rgba(245,184,65,.55)}70%{box-shadow:0 0 0 7px rgba(245,184,65,0)}}

/* pulse -> hero có gradient + viền vàng mảnh trên đỉnh */
.pulse{background:radial-gradient(130% 150% at 0% 0%,rgba(245,184,65,.06),transparent 46%),linear-gradient(180deg,#1a212b,var(--surface));box-shadow:var(--shadow);position:relative;overflow:hidden}
.pulse::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--gold),transparent);opacity:.7}
.pulse .lead{letter-spacing:-.8px}
.balance{box-shadow:inset 0 0 0 1px rgba(255,255,255,.03)}

/* tiêu đề mục có gạch vàng nhỏ */
.sec-h h2{position:relative;padding-left:13px}
.sec-h h2::before{content:"";position:absolute;left:0;top:52%;transform:translateY(-50%);width:4px;height:16px;border-radius:2px;background:var(--gold)}

/* thẻ tín hiệu: đổ bóng, nhấc nhẹ khi hover, spine chuyển sắc */
.sig{box-shadow:var(--shadow-sm);transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease}
.sig:hover{transform:translateY(-1px);box-shadow:var(--shadow)}
.spine.up{background:linear-gradient(180deg,var(--up),rgba(38,208,124,.35))}
.spine.down{background:linear-gradient(180deg,var(--down),rgba(240,97,109,.35))}
.spine.flat{background:linear-gradient(180deg,#3A4552,#2a333d)}
.heat .track{box-shadow:inset 0 0 0 1px rgba(255,255,255,.04)}
.heat .fill{box-shadow:0 0 8px rgba(245,184,65,.35)}
.cta{transition:filter .15s,transform .12s}
.cta:active{transform:scale(.97)}

/* thẻ coin: chiều sâu + nhấc khi chạm */
.ccard{box-shadow:var(--shadow-sm);transition:border-color .18s,transform .18s,box-shadow .18s}
.ccard:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.coin-tag,.chip{transition:border-color .15s,color .15s,transform .12s}
.coin-tag:active{transform:scale(.97)}
.coin-hero{background:linear-gradient(180deg,#1a212b,var(--surface));box-shadow:var(--shadow)}

/* mobile: vùng chạm to hơn, thao tác dễ */
@media (max-width:680px){
  nav a{padding:6px 0}
  .cta{padding:5px 12px}
  .sig:hover,.ccard:hover{transform:none}
  .sig:active{transform:scale(.995)}
}

/* ============ HERO + ABOUT (Nhóm B) ============ */
.hero{margin:26px 0 10px;padding:30px 30px 26px;background:radial-gradient(120% 160% at 100% 0%,rgba(245,184,65,.07),transparent 50%),linear-gradient(180deg,#1a212b,var(--surface));border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--gold),transparent 60%)}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.6px}
.livedot{width:8px;height:8px;border-radius:50%;background:var(--up);box-shadow:0 0 0 0 rgba(38,208,124,.5);animation:livepulse2 2s ease-in-out infinite}
@keyframes livepulse2{0%,100%{box-shadow:0 0 0 0 rgba(38,208,124,.5)}70%{box-shadow:0 0 0 6px rgba(38,208,124,0)}}
.hero-h{font-family:var(--disp);font-weight:700;font-size:33px;line-height:1.15;letter-spacing:-1px;margin:12px 0 10px}
.hero-sub{color:var(--muted);font-size:15px;line-height:1.6;max-width:640px;margin:0}
.hero-stats{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.hstat{font-family:var(--mono);font-size:12.5px;color:var(--muted);background:var(--surface);border:1px solid var(--line);padding:7px 13px;border-radius:9px}
.hstat b{color:var(--text)}
.hstat.htg{color:#0E1116;background:#229ED9;border-color:#229ED9;font-weight:600}
.hstat.htg:hover{filter:brightness(1.07)}
.about-hero{margin-top:22px}

/* steps */
.steps{display:grid;gap:11px}
.step{display:flex;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:15px 16px;box-shadow:var(--shadow-sm)}
.step-n{flex:none;width:30px;height:30px;border-radius:8px;background:#1e1a0d;color:var(--gold);border:1px solid #3a3016;font-family:var(--disp);font-weight:700;display:flex;align-items:center;justify-content:center}
.step b{font-family:var(--disp);font-size:15.5px}
.step p{margin:5px 0 0;color:var(--muted);font-size:13.5px;line-height:1.5}

/* metrics */
.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.metric{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px;box-shadow:var(--shadow-sm)}
.m-h{font-family:var(--disp);font-weight:600;font-size:16px;display:flex;align-items:center;gap:8px}
.mnum{font-family:var(--mono);font-size:11px;color:var(--muted);border:1px solid var(--line);padding:1px 7px;border-radius:20px}
.metric p{margin:9px 0 0;color:var(--muted);font-size:13px;line-height:1.5}

.about-p{color:var(--muted);font-size:14.5px;line-height:1.6;max-width:680px}
.notice{margin:22px 0;padding:15px 17px;background:#1a150c;border:1px solid #3a3016;border-radius:12px;color:#d9c9a0;font-size:13.5px;line-height:1.55}
.about-cta{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0}
.btn-primary{font-family:var(--disp);font-weight:600;background:var(--gold);color:#0E1116;padding:11px 18px;border-radius:10px}
.btn-ghost{font-family:var(--disp);font-weight:600;background:transparent;color:var(--text);border:1px solid var(--line);padding:11px 18px;border-radius:10px}
.btn-primary:hover{filter:brightness(1.07)} .btn-ghost:hover{border-color:#31414f}

@media (max-width:680px){
  .hero{padding:22px 18px;margin:18px 0 8px}
  .hero-h{font-size:25px}
  .hero-sub{font-size:14px}
  .metrics{grid-template-columns:1fr}
  .about-cta .btn-primary,.about-cta .btn-ghost{flex:1;text-align:center}
}