/* 智能链水龙头 — 与浏览器同风格 */
:root{
  --bg:#07090c;--bg2:#0b0e13;--panel:#0e1218;--panel2:#121821;
  --line:#1c2530;--line2:#26313f;
  --txt:#e6edf5;--sub:#7d8da1;--dim:#4a5768;
  --acc:#00e5a0;--acc2:#00b8ff;--gold:#ffc247;--red:#ff5c5c;
  --mono:ui-monospace,'SF Mono',Monaco,Menlo,monospace;
  --sans:-apple-system,'PingFang SC','Microsoft YaHei',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
body{background:var(--bg);color:var(--txt);font-family:var(--sans);font-size:14px;line-height:1.5;min-height:100vh;overflow-x:hidden}
.grid-bg{position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(0,229,160,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(0,229,160,.03) 1px,transparent 1px);
  background-size:44px 44px;mask-image:radial-gradient(ellipse 100% 60% at 50% 0%,#000 30%,transparent 100%)}
.scanline{position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.35;
  background:repeating-linear-gradient(0deg,rgba(0,0,0,.22) 0 1px,transparent 1px 3px);mix-blend-mode:multiply}

.topbar{position:sticky;top:0;z-index:50;background:rgba(7,9,12,.88);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.tb-inner{max-width:900px;margin:0 auto;padding:.7rem 1rem;display:flex;align-items:center;justify-content:space-between;gap:1rem}
.topbar{display:flex;align-items:center;justify-content:space-between;max-width:900px;margin:0 auto;padding:.7rem 1rem}
.brand{display:flex;align-items:center;gap:.55rem;text-decoration:none;color:var(--acc)}
.brand-mark{width:30px;height:30px;filter:drop-shadow(0 0 8px rgba(0,229,160,.45))}
.brand-txt{display:flex;flex-direction:column;line-height:1.1}
.brand-txt b{font-size:1rem;color:var(--txt)}
.brand-txt i{font-family:var(--mono);font-size:.58rem;color:var(--dim);font-style:normal;letter-spacing:.16em}
.chainbadge{display:flex;align-items:center;gap:.4rem;padding:.35rem .6rem;border:1px solid var(--line2);border-radius:8px;background:var(--panel);font-family:var(--mono);font-size:.7rem}
.cb-l{color:var(--dim);font-size:.62rem;letter-spacing:.06em}
.chainbadge b{color:var(--acc)}
.pulse{width:7px;height:7px;border-radius:50%;background:var(--acc);box-shadow:0 0 0 0 rgba(0,229,160,.6);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(0,229,160,.55)}70%{box-shadow:0 0 0 7px rgba(0,229,160,0)}100%{box-shadow:0 0 0 0 rgba(0,229,160,0)}}

.wrap{position:relative;z-index:2;max-width:900px;margin:0 auto;padding:1.2rem 1rem 3rem}

.hero{position:relative;border-radius:12px;overflow:hidden;margin-bottom:1.1rem;border:1px solid var(--line);min-height:150px;display:flex;align-items:center}
.hero-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:saturate(.9)}
.hero-ol{position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,9,12,.94),rgba(7,9,12,.62) 55%,rgba(7,9,12,.25))}
.hero-txt{position:relative;z-index:2;padding:1.4rem}
.hero-txt h1{font-size:1.52rem;font-weight:900;letter-spacing:-.01em;
  background:linear-gradient(96deg,#e6edf5 18%,var(--acc) 88%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero-txt p{margin-top:.35rem;font-family:var(--mono);font-size:.72rem;color:var(--sub)}

.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:.7rem;margin-bottom:1.1rem}
.card{background:linear-gradient(160deg,var(--panel),var(--bg2));border:1px solid var(--line);border-radius:10px;padding:.8rem .85rem;display:flex;flex-direction:column;gap:.14rem;position:relative;overflow:hidden}
.card::before{content:'';position:absolute;top:0;left:0;width:2px;height:100%;background:linear-gradient(180deg,var(--acc),transparent)}
.c-k{font-size:.66rem;color:var(--dim);letter-spacing:.06em}
.c-v{font-family:var(--mono);font-size:1.22rem;font-weight:700;color:var(--txt)}
.c-u{font-family:var(--mono);font-size:.62rem;color:var(--sub)}

.panel{background:var(--panel);border:1px solid var(--line);border-radius:10px;overflow:hidden;margin-bottom:.9rem}
.p-head{display:flex;align-items:center;justify-content:space-between;padding:.7rem .9rem;border-bottom:1px solid var(--line);background:var(--bg2)}
.p-head h2{font-size:.86rem;font-weight:700}
.p-sub{font-size:.7rem;color:var(--dim);font-family:var(--mono)}
.p-body{padding:.9rem}

.field{margin-bottom:.8rem}
.field label{display:block;font-size:.74rem;color:var(--sub);margin-bottom:.35rem}
.field input{width:100%;padding:.7rem .85rem;background:var(--bg2);border:1px solid var(--line2);border-radius:8px;color:var(--txt);font-family:var(--mono);font-size:.8rem;outline:none;transition:.18s}
.field input:focus{border-color:var(--acc);box-shadow:0 0 0 3px rgba(0,229,160,.10)}
.field input::placeholder{color:var(--dim)}
.hint{font-size:.68rem;color:var(--dim);margin-top:.3rem}

.btn{width:100%;padding:.78rem;border:none;border-radius:9px;cursor:pointer;
  background:linear-gradient(135deg,#00e5a0,#00b8ff);color:#04120c;
  font-family:var(--sans);font-size:.92rem;font-weight:800;letter-spacing:.02em;
  transition:.16s;box-shadow:0 4px 18px rgba(0,229,160,.22)}
.btn:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn:active{transform:translateY(0) scale(.99)}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}

.result{margin-top:.8rem}
.res-box{border-radius:9px;padding:.75rem .85rem;font-family:var(--mono);font-size:.76rem;line-height:1.7;word-break:break-all}
.res-box.ok{border:1px solid rgba(0,229,160,.3);background:rgba(0,229,160,.06);color:var(--acc)}
.res-box.err{border:1px solid rgba(255,92,92,.3);background:rgba(255,92,92,.06);color:var(--red)}
.res-box a{color:var(--acc2);text-decoration:none}
.res-box a:hover{text-decoration:underline}

.steps{padding:.5rem .9rem .8rem}
.step{display:flex;gap:.75rem;padding:.6rem 0;border-bottom:1px solid rgba(28,37,48,.5)}
.step:last-child{border-bottom:none}
.s-n{font-family:var(--mono);font-size:.82rem;font-weight:800;color:var(--acc);flex-shrink:0;width:26px}
.step b{font-size:.8rem;display:block;margin-bottom:.15rem}
.step p{font-size:.74rem;color:var(--sub);line-height:1.6}
.step code{font-family:var(--mono);font-size:.7rem;color:var(--acc);background:rgba(0,229,160,.07);padding:.1rem .35rem;border-radius:4px}

.rules{padding:.5rem .9rem .8rem;display:flex;flex-direction:column;gap:.5rem}
.rule{display:flex;align-items:center;gap:.5rem;font-size:.78rem;color:var(--sub)}
.rule b{color:var(--gold);font-family:var(--mono)}
.dot{width:6px;height:6px;border-radius:50%;background:var(--acc);flex-shrink:0}

.foot{position:relative;z-index:2;max-width:900px;margin:0 auto;padding:1.2rem 1rem 2.4rem;display:flex;align-items:center;gap:.7rem;flex-wrap:wrap;border-top:1px solid var(--line);font-family:var(--mono);font-size:.68rem;color:var(--dim)}
.foot b{color:var(--acc)}
.dotsep{width:3px;height:3px;border-radius:50%;background:var(--line2)}

.toast{position:fixed;left:50%;bottom:2rem;transform:translateX(-50%) translateY(20px);background:var(--panel2);border:1px solid var(--line2);border-radius:8px;padding:.5rem .9rem;font-family:var(--mono);font-size:.74rem;opacity:0;pointer-events:none;transition:.22s;z-index:200}
.toast.on{opacity:1;transform:translateX(-50%) translateY(0)}

::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:var(--bg2)}
::-webkit-scrollbar-thumb{background:var(--line2);border-radius:4px}

@media(max-width:760px){.cards{grid-template-columns:1fr 1fr}}
@media(max-width:520px){
  .hero{min-height:118px}.hero-txt{padding:.95rem}
  .hero-txt h1{font-size:1.1rem}.hero-txt p{font-size:.64rem}
  .wrap{padding:.9rem .7rem 2rem}
  .topbar{padding:.6rem .8rem}
  .brand-txt i{display:none}
}