@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

:root {
  --bg: #020b1f;
  --card: rgba(10, 28, 65, 0.75);
  --text: #f1f5f9;
  --muted: rgba(255,255,255,0.5);
  --line: rgba(0,212,255,0.15);

  --primary: #1a6fdb;
  --primary-2: #00b4d8;
  --cyan: #00d4ff;
  --cyan-glow: rgba(0,212,255,0.25);

  --shadow: 0 12px 40px rgba(0,0,0,0.4);
  --radius: 18px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Noto Sans SC', ui-sans-serif, system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Grid overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,180,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,180,255,0.06) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
  z-index: 0;
}

/* Top radial glow */
body::after {
  content: '';
  position: fixed;
  top: -10%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 500px;
  background: radial-gradient(ellipse, rgba(0,90,220,0.22) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* Floating particles */
@keyframes particleRise {
  0%   { opacity: 0; transform: translateY(0) scale(0.5); }
  15%  { opacity: 0.7; }
  85%  { opacity: 0.2; }
  100% { opacity: 0; transform: translateY(-100vh) scale(1.4); }
}
.particle {
  position: fixed;
  width: 2px; height: 2px;
  background: var(--cyan);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  animation: particleRise linear infinite;
}

a { color: inherit; text-decoration: none; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

/* ===== Topbar ===== */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(2, 11, 31, 0.80);
  border-bottom: 1px solid rgba(0, 212, 255, 0.12);
  box-shadow: 0 1px 0 rgba(0,212,255,0.06);
}

.topbar .inner {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: .5px;
  color: #fff;
}

.logo {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  object-fit: cover;
  display: block;
  box-shadow: 0 0 14px rgba(0,212,255,0.35);
}

.brand .site {
  font-size: 12px;
  font-weight: 500;
  color: rgba(255,255,255,0.4);
  margin-left: 10px;
  padding-left: 10px;
  border-left: 1px solid rgba(0,212,255,0.2);
  line-height: 1;
  letter-spacing: 0.5px;
}

.nav {
  display: flex;
  gap: 10px;
  align-items: center;
  font-size: 14px;
}

.nav a {
  padding: 8px 12px;
  border-radius: 10px;
  color: rgba(255,255,255,0.6);
  transition: background .15s, color .15s;
}

.nav a:hover {
  background: rgba(0,212,255,0.08);
  color: var(--cyan);
}

/* ===== Topbar Download Button ===== */
.dl-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 36px;
  padding: 0 14px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  color: #fff !important;
  font-weight: 800;
  font-size: 14px;
  box-shadow: 0 6px 20px rgba(0,180,255,0.3);
  transition: box-shadow .15s, transform .15s;
  position: relative;
  overflow: hidden;
}

.dl-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,0.12) 50%, transparent 60%);
  animation: btnShine 3s linear infinite;
}

@keyframes btnShine {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(200%); }
}

.dl-btn:hover {
  box-shadow: 0 8px 28px rgba(0,180,255,0.5);
  transform: translateY(-1px);
}

.dl-btn:active { transform: translateY(0); box-shadow: 0 4px 14px rgba(0,180,255,0.3); }

.dl-ico {
  width: 18px; height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.dl-ico svg { width: 18px; height: 18px; display: block; }

/* ===== Hero ===== */
.hero {
  padding: 48px 0 16px;
}

.hero h1 {
  margin: 0;
  font-size: 24px;
  font-weight: 900;
  line-height: 1.3;
  text-align: center;
  background: linear-gradient(90deg, #ffffff 40%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.3px;
}

/* ===== Search card ===== */
.search-card {
  margin: 24px auto 0;
  max-width: 760px;
  background: var(--card);
  border: 1px solid rgba(0,212,255,0.18);
  border-radius: var(--radius);
  box-shadow: var(--shadow), 0 0 0 1px rgba(255,255,255,0.04) inset;
  padding: 20px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
}

.search-card::before {
  content: '';
  position: absolute;
  top: -60px; right: -60px;
  width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(0,212,255,0.08), transparent 70%);
  pointer-events: none;
}

.search-row {
  display: flex;
  gap: 10px;
  align-items: center;
}

.input {
  flex: 1;
  height: 46px;
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: 12px;
  padding: 0 16px;
  font-size: 14px;
  outline: none;
  background: rgba(255,255,255,0.05);
  color: var(--text);
  font-family: inherit;
  transition: border-color .2s, box-shadow .2s;
}

.input::placeholder { color: rgba(255,255,255,0.3); }

.input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0,212,255,0.15);
}

.btn {
  height: 46px;
  padding: 0 20px;
  border: none;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  font-family: inherit;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(0,180,255,0.3);
  transition: box-shadow .15s, transform .15s;
  white-space: nowrap;
}

.btn:hover {
  box-shadow: 0 8px 28px rgba(0,180,255,0.5);
  transform: translateY(-1px);
}

.btn:active { transform: translateY(0); }

/* Divider */
.card-divider {
  height: 1px;
  background: rgba(0,212,255,0.12);
  margin: 16px 0;
}

/* ===== OKX Price Grid ===== */
.p2p-title {
  margin-top: 0;
  font-size: 13px;
  font-weight: 600;
  color: rgba(255,255,255,0.7);
  text-align: center;
  letter-spacing: .2px;
}
.p2p-title .p2p-em { color: var(--cyan); }
.p2p-title .p2p-sub {
  font-weight: 400;
  color: rgba(255,255,255,0.35);
  margin-left: 6px;
}

.p2p-grid-4 {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.p2p-item-vertical {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 6px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(0,212,255,0.1);
  border-radius: 14px;
  text-align: center;
  transition: border-color .2s, background .2s;
}

.p2p-item-vertical:hover {
  border-color: rgba(0,212,255,0.3);
  background: rgba(0,212,255,0.05);
}

.p2p-icon {
  width: 44px; height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
}

.p2p-icon img {
  width: 28px; height: 28px;
  display: block;
  object-fit: contain;
}

.p2p-sym {
  font-size: 12px;
  font-weight: 700;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.5px;
}

.p2p-val {
  font-size: 16px;
  font-weight: 900;
  color: #fff;
  font-variant-numeric: tabular-nums;
}

.p2p-meta {
  margin-top: 12px;
  text-align: center;
  font-size: 12px;
  color: rgba(255,255,255,0.3);
}

/* ===== Ads Section ===== */
.ads { margin-top: 28px; }
.ads-inner {
  background: transparent;
  border: none;
  padding: 0;
}

.ads-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.ad-card {
  background: var(--card);
  border: 1px solid rgba(0,212,255,0.1);
  border-radius: 16px;
  padding: 20px 14px;
  text-align: center;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
  color: inherit;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.ad-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 36px rgba(0,0,0,0.4);
  border-color: rgba(0,212,255,0.28);
}

.ad-icon {
  width: 52px; height: 52px;
  border-radius: 50%;
  margin: 0 auto 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

.ad-svg { width: 24px; height: 24px; }

.ad-title {
  font-size: 15px;
  line-height: 1.2;
  font-weight: 800;
  color: #f1f5f9;
  margin-bottom: 6px;
}

.ad-sub {
  font-size: 12px;
  color: rgba(255,255,255,0.45);
  line-height: 1.4;
}

.ad-icon-1 { background: linear-gradient(135deg, #3b82f6, #1a6fdb); box-shadow: 0 4px 14px rgba(59,130,246,0.4); }
.ad-icon-2 { background: linear-gradient(135deg, #3b82f6, #1a6fdb); box-shadow: 0 4px 14px rgba(59,130,246,0.4); }
.ad-icon-3 { background: linear-gradient(135deg, #f43f5e, #be123c); box-shadow: 0 4px 14px rgba(244,63,94,0.4); }
.ad-icon-4 { background: linear-gradient(135deg, #f43f5e, #be123c); box-shadow: 0 4px 14px rgba(244,63,94,0.4); }
.ad-icon-5 { background: linear-gradient(135deg, #f59e0b, #d97706); box-shadow: 0 4px 14px rgba(245,158,11,0.4); }

.ad-card.placeholder .ad-icon {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.4);
  box-shadow: none;
}
.ad-card.placeholder .ad-title { color: rgba(255,255,255,0.4); }
.ad-card.placeholder .ad-sub { color: rgba(255,255,255,0.25); }

/* ===== Footer ===== */
.footer {
  margin-top: 36px;
  padding: 40px 0 28px;
  background:
    radial-gradient(900px 380px at 20% 0%, rgba(0,80,200,0.2), transparent 60%),
    radial-gradient(700px 320px at 80% 10%, rgba(0,212,255,0.1), transparent 55%),
    linear-gradient(180deg, #030d22 0%, #020b1f 100%);
  border-top: 1px solid rgba(0,212,255,0.1);
  position: relative;
  z-index: 1;
}

.footer .fgrid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.footer-card {
  border: none;
  background: transparent;
  border-radius: 0;
  padding: 0;
}

.footer-card .h {
  font-weight: 800;
  font-size: 14px;
  margin-bottom: 14px;
  color: var(--cyan);
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.footer-card .h .fhico {
  width: 16px; height: 16px;
  color: var(--cyan);
  flex: 0 0 auto;
}

.footer-card .line {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  margin: 10px 0;
  border-radius: 14px;
  border: 1px solid rgba(0,212,255,0.12);
  background: rgba(255,255,255,0.03);
  color: #e2e8f0;
  text-decoration: none;
  transition: background .15s, border-color .15s, transform .15s;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.footer-card .line:hover {
  background: rgba(0,212,255,0.06);
  border-color: rgba(0,212,255,0.28);
  transform: translateY(-1px);
}

.footer-card .line:active { transform: translateY(0); }

.footer-card .line .lico {
  width: 32px; height: 32px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.15);
  color: var(--cyan);
  flex: 0 0 auto;
}

.footer-card .line .lico svg { width: 16px; height: 16px; display: block; }

.footer-card .line .ltxt {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.footer-card .line .lcap {
  font-size: 12px;
  color: rgba(255,255,255,0.4);
}

.footer-card .line .lval {
  font-size: 13px;
  font-weight: 600;
  color: #f8fafc;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.copyright {
  margin-top: 24px;
  text-align: center;
  font-size: 12px;
  color: rgba(255,255,255,0.2);
  letter-spacing: 0.5px;
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  left: 50%;
  bottom: 350px;
  transform: translateX(-50%);
  z-index: 9999;
  background: rgba(10,28,65,0.92);
  border: 1px solid rgba(0,212,255,0.25);
  color: #fff;
  padding: 12px 18px;
  border-radius: 12px;
  font-size: 15px;
  line-height: 1.2;
  box-shadow: 0 14px 40px rgba(0,0,0,0.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
  max-width: min(640px, calc(100vw - 24px));
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(-6px);
}

/* ===== Responsive ===== */
@media (max-width: 980px) {
  .ads-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ad-title { font-size: 15px; }
}

@media (max-width: 520px) {
  .hero h1 { font-size: 19px; }
  .brand .site { display: none; }
  .dl-btn { height: 34px; padding: 0 10px; font-size: 13px; border-radius: 10px; gap: 6px; }
  .dl-ico { width: 16px; height: 16px; }
  .dl-ico svg { width: 16px; height: 16px; }

  .search-card { max-width: none; width: 100%; padding: 14px; }
  .search-row { gap: 8px; }
  .input { height: 42px; font-size: 13px; padding: 0 12px; }
  .btn { height: 42px; padding: 0 12px; font-size: 14px; border-radius: 10px; }

  .p2p-grid-4 { gap: 6px; }
  .p2p-icon { width: 38px; height: 38px; }
  .p2p-icon img { width: 22px; height: 22px; }
  .p2p-sym { font-size: 11px; }
  .p2p-val { font-size: 13px; }
  .p2p-item-vertical { padding: 8px 4px; border-radius: 10px; }

  .toast {
    bottom: 200px;
    font-size: 14px;
    padding: 10px 12px;
    max-width: calc(100vw - 20px);
  }
}

.ad-icon-img { width: 24px; height: 24px; display: block; object-fit: contain; }