/* ============================================================
   Aurent Exchange — template layer（PAGE_TEMPLATE = "exchange"）
   ============================================================ */

/* ---------- 顶栏 ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: saturate(150%) blur(12px);
  background: rgba(247, 244, 237, .78);
  border-bottom: 1px solid var(--line-soft);
}
.nav-in {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 34px);
  height: 66px;
}
.brand {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
  white-space: nowrap;
}
.brand em {
  font-style: normal;
  color: var(--gold);
}
.nav-links {
  display: flex;
  gap: 26px;
  margin-left: 8px;
  font-size: 14px;
  color: var(--ink-fade);
}
.nav-links a { transition: color .16s ease; }
.nav-links a:hover { color: var(--ink); }
.nav-act {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}
.lang-btn {
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--ink-fade);
  transition: border-color .16s ease, color .16s ease;
}
.lang-btn:hover { border-color: var(--gold); color: var(--gold); }
.nav .btn { padding: 10px 20px; font-size: 13.5px; }

/* ---------- Hero ---------- */

.hero { padding: clamp(56px, 9vw, 104px) 0 clamp(40px, 6vw, 68px); }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: clamp(34px, 6vw, 72px);
  align-items: center;
}
.hero h1 {
  margin: 18px 0 0;
  font-size: clamp(38px, 5.6vw, 62px);
  letter-spacing: -0.028em;
}
.hero h1 i {
  font-style: italic;
  color: var(--gold);
}
.hero-lede {
  margin-top: 20px;
  max-width: 46ch;
  font-size: clamp(15.5px, 1.35vw, 17.5px);
  color: var(--ink-fade);
}
.hero-act { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--ink-fade);
}
.hero-trust span { display: inline-flex; align-items: center; gap: 7px; }
.hero-trust span::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--gold-soft);
}

/* ---------- 汇率面板 ---------- */

.rate-panel { padding: 22px 22px 14px; }
.rate-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--line-soft);
}
.rate-head h3 { font-size: 15.5px; letter-spacing: 0.01em; }
.rate-head span { font-size: 11.5px; letter-spacing: 0.07em; color: var(--ink-fade); }
.rate-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
}
.rate-row:last-child { border-bottom: 0; }
.rate-pair {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 600;
}
.rate-dot {
  width: 26px; height: 26px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--paper);
  background: linear-gradient(150deg, var(--ink-soft), var(--ink));
}
.rate-pair small {
  display: block;
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--ink-fade);
}
.rate-val {
  font-family: var(--font-mono);
  font-size: 15px;
  font-variant-numeric: tabular-nums;
}
.rate-chg {
  min-width: 62px;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.is-up { color: var(--up); }
.is-down { color: var(--down); }
.rate-foot {
  padding: 12px 0 6px;
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--ink-fade);
}

/* ---------- 数据条 ---------- */

.stats { padding: 12px 0 clamp(44px, 6vw, 66px); }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  overflow: hidden;
}
.stat {
  padding: 24px var(--gut);
  background: rgba(255,255,255,.62);
}
.stat b {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(26px, 3.2vw, 36px);
  font-weight: 600;
  letter-spacing: -0.02em;
}
.stat span {
  display: block;
  margin-top: 6px;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-fade);
}

/* ---------- 能力区 ---------- */

.features { padding: clamp(30px, 5vw, 52px) 0 clamp(52px, 7vw, 84px); }
.features h2 { font-size: clamp(27px, 3.5vw, 38px); letter-spacing: -0.022em; }
.features-lede {
  margin-top: 14px;
  max-width: 54ch;
  font-size: 15.5px;
  color: var(--ink-fade);
}
.feat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 2.2vw, 24px);
  margin-top: 40px;
}
.feat {
  padding: 28px 26px 30px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(168deg, rgba(255,255,255,.9), rgba(255,255,255,.58));
  transition: transform .22s cubic-bezier(.22,.72,.24,1), border-color .22s ease;
}
.feat:hover { transform: translateY(-3px); border-color: var(--gold-soft); }
.feat-n {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--gold);
}
.feat h3 { margin-top: 14px; font-size: 19.5px; }
.feat p { margin-top: 11px; font-size: 14.5px; color: var(--ink-fade); }

/* ---------- 收尾 CTA ---------- */

.cta { padding-bottom: clamp(56px, 8vw, 96px); }
.cta-box {
  position: relative;
  overflow: hidden;
  padding: clamp(34px, 5vw, 56px);
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) auto;
  align-items: center;
  gap: 30px;
}
.cta-box::after {
  content: "";
  position: absolute;
  right: -120px; top: -120px;
  width: 340px; height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(184,135,60,.22), transparent 68%);
  pointer-events: none;
}
.cta-box h2 { font-size: clamp(25px, 3.2vw, 34px); }
.cta-box p { margin-top: 12px; font-size: 15px; color: var(--ink-fade); max-width: 48ch; }

/* ---------- 页脚 ---------- */

.foot {
  border-top: 1px solid var(--line);
  background: rgba(15, 58, 48, .035);
  padding: clamp(34px, 5vw, 52px) 0 34px;
}
.foot-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, .8fr));
  gap: 32px;
}
.foot h4 {
  margin: 0 0 12px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink);
}
.foot ul { list-style: none; margin: 0; padding: 0; }
.foot li + li { margin-top: 9px; }
.foot a { font-size: 14px; color: var(--ink-fade); transition: color .16s ease; }
.foot a:hover { color: var(--gold); }
.foot-brand p {
  margin-top: 13px;
  max-width: 34ch;
  font-size: 13.5px;
  color: var(--ink-fade);
}
.foot-legal {
  margin-top: 38px;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  justify-content: space-between;
  font-size: 12px;
  color: var(--ink-fade);
}
.foot-note { max-width: 72ch; margin-top: 14px; font-size: 11.5px; line-height: 1.7; color: var(--ink-fade); }

/* ---------- 响应式 ---------- */

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .feat-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .cta-box { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
}
@media (max-width: 560px) {
  .foot-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: clamp(32px, 9vw, 42px); }
  .stat { padding: 20px var(--gut); }
}