/* ThinkMarkets 外汇中文站 — 样式表
   配色还原官网：深炭黑背景 + 电光柠檬黄强调色
   字体本地化：苹方 / 微软雅黑 系统字体栈，无外部 CDN */

:root {
  --bg: #0b0c0e;
  --bg-alt: #101216;
  --surface: #15171c;
  --surface-2: #1b1e24;
  --border: #262a31;
  --line: #2f343c;
  --accent: #c9f73d;
  --accent-soft: rgba(201, 247, 61, 0.12);
  --accent-deep: #aede1f;
  --ink: #f4f6f7;
  --ink-2: #c3c9d0;
  --ink-3: #8b929b;
  --maxw: 1180px;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.45);
  --zh: "PingFang SC", "苹方-简", "Hiragino Sans GB", "Microsoft YaHei",
    "微软雅黑", "Source Han Sans SC", "Noto Sans SC", sans-serif;
  --latin: "Helvetica Neue", "Segoe UI", Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--zh);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.75;
  font-size: 16px;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 22px;
}

.en { font-family: var(--latin); }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 12, 14, 0.86);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--latin);
  font-weight: 700;
  font-size: 21px;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.brand .dot { color: var(--accent); }
.brand svg { width: 30px; height: 30px; display: block; }

.nav-toggle { display: none; }
.nav-burger { display: none; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav-links a {
  color: var(--ink-2);
  font-size: 15px;
  font-weight: 500;
  transition: color 0.18s ease;
}
.nav-links a:hover,
.nav-links a.active { color: var(--ink); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  border-radius: 999px;
  padding: 11px 24px;
  transition: transform 0.16s ease, background 0.18s ease, box-shadow 0.18s ease;
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #10130a;
  box-shadow: 0 8px 22px rgba(201, 247, 61, 0.22);
}
.btn-primary:hover { background: var(--accent-deep); transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--ink-3); background: rgba(255, 255, 255, 0.03); }
.btn-lg { padding: 14px 30px; font-size: 16px; }

/* ---------- 通用区块 ---------- */
section { padding: 80px 0; }
.section-head { max-width: 660px; margin-bottom: 48px; }
.eyebrow {
  font-family: var(--latin);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 14px;
}
h1, h2, h3 { line-height: 1.25; letter-spacing: -0.01em; font-weight: 700; }
h1 { font-size: clamp(2rem, 4.6vw, 3.3rem); }
h2 { font-size: clamp(1.55rem, 3vw, 2.3rem); }
h3 { font-size: 1.18rem; }
.lead { color: var(--ink-2); font-size: 1.06rem; margin-top: 14px; }
p { color: var(--ink-2); }
.muted { color: var(--ink-3); }

/* ---------- 首页主视觉 ---------- */
.hero {
  position: relative;
  padding: 96px 0 84px;
  overflow: hidden;
  background:
    radial-gradient(1100px 460px at 78% -8%, rgba(201, 247, 61, 0.14), transparent 60%),
    linear-gradient(180deg, #0d0f12 0%, var(--bg) 70%);
  border-bottom: 1px solid var(--border);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}
.hero h1 { margin-bottom: 8px; }
.hero h1 .hl { color: var(--accent); }
.hero .lead { max-width: 520px; font-size: 1.12rem; }
.hero-cta { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }
.hero-meta {
  display: flex;
  gap: 30px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.hero-meta .m-num {
  font-family: var(--latin);
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--ink);
}
.hero-meta .m-lab { font-size: 0.85rem; color: var(--ink-3); }

.hero-panel {
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 26px;
  box-shadow: var(--shadow);
}
.quote-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 4px;
  border-bottom: 1px solid var(--border);
  font-family: var(--latin);
}
.quote-row:last-child { border-bottom: 0; }
.quote-row .sym { font-weight: 600; color: var(--ink); letter-spacing: 0.02em; }
.quote-row .desc { font-family: var(--zh); font-size: 0.8rem; color: var(--ink-3); display: block; letter-spacing: 0; }
.quote-row .val { color: var(--ink-2); font-variant-numeric: tabular-nums; }
.quote-row .tag {
  font-size: 0.72rem;
  color: var(--accent-deep);
  background: var(--accent-soft);
  padding: 3px 9px;
  border-radius: 6px;
  font-family: var(--zh);
}
.panel-note { font-size: 0.78rem; color: var(--ink-3); margin-top: 16px; line-height: 1.6; }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.card:hover { border-color: var(--line); transform: translateY(-3px); }
.card .ic {
  width: 44px;
  height: 44px;
  border-radius: 11px;
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.card .ic svg { width: 22px; height: 22px; stroke: var(--accent); }
.card h3 { margin-bottom: 8px; }
.card p { font-size: 0.95rem; }

/* 市场列表卡 */
.mk { display: flex; align-items: flex-start; gap: 16px; }
.mk .mk-en {
  font-family: var(--latin);
  font-size: 0.78rem;
  color: var(--ink-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* 数据带 */
.band {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.stat .s-num {
  font-family: var(--latin);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--accent);
  line-height: 1.1;
}
.stat .s-lab { color: var(--ink-2); font-size: 0.95rem; margin-top: 6px; }

/* 平台条目 */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
  align-items: stretch;
}
.feat-list { margin-top: 20px; }
.feat-list li {
  display: flex;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--border);
  color: var(--ink-2);
  font-size: 0.97rem;
}
.feat-list li:last-child { border-bottom: 0; }
.feat-list .ck {
  flex: none;
  width: 20px; height: 20px;
  margin-top: 3px;
  color: var(--accent);
}

/* 页面页眉（分页面） */
.page-hero {
  padding: 70px 0 54px;
  background:
    radial-gradient(900px 380px at 85% -20%, rgba(201, 247, 61, 0.10), transparent 60%),
    var(--bg-alt);
  border-bottom: 1px solid var(--border);
}
.page-hero h1 { max-width: 760px; }
.page-hero .lead { max-width: 680px; }
.crumb { font-size: 0.84rem; color: var(--ink-3); margin-bottom: 16px; font-family: var(--latin); }
.crumb b { color: var(--accent); font-weight: 600; }

/* 长文排版 */
.prose h2 { margin: 8px 0 16px; }
.prose h3 { margin: 30px 0 10px; color: var(--ink); }
.prose p { margin-bottom: 16px; line-height: 1.85; }
.prose + .prose { margin-top: 6px; }

.note {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 20px 22px;
  margin: 30px 0;
}
.note p { color: var(--ink-2); font-size: 0.95rem; margin: 0; }

table.spec {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0 6px;
  font-size: 0.95rem;
}
table.spec th, table.spec td {
  text-align: left;
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
}
table.spec th {
  color: var(--ink-3);
  font-weight: 600;
  font-size: 0.84rem;
  letter-spacing: 0.04em;
  background: var(--surface);
}
table.spec td { color: var(--ink-2); }
table.spec td:first-child { color: var(--ink); font-weight: 500; }

/* ---------- 页脚 ---------- */
.site-footer {
  background: #08090b;
  border-top: 1px solid var(--border);
  padding: 56px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.1fr;
  gap: 40px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--latin);
  font-weight: 700;
  font-size: 19px;
  margin-bottom: 16px;
}
.footer-brand .dot { color: var(--accent); }
.footer-brand svg { width: 26px; height: 26px; }
.site-footer h4 {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-3);
  margin-bottom: 18px;
  font-family: var(--latin);
}
.site-footer p { font-size: 0.92rem; color: var(--ink-3); line-height: 1.8; }
.foot-list li { color: var(--ink-2); font-size: 0.93rem; padding: 6px 0; }
.foot-contact li { color: var(--ink-2); font-size: 0.92rem; padding: 6px 0; display: flex; gap: 10px; }
.foot-contact .k { color: var(--ink-3); flex: none; min-width: 56px; }

.foot-bottom {
  margin-top: 44px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.risk { font-size: 0.8rem; color: var(--ink-3); line-height: 1.8; }
.copy { font-size: 0.8rem; color: var(--ink-3); margin-top: 14px; font-family: var(--latin); }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-panel { order: 2; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: 1fr 1fr; row-gap: 32px; }
  .split { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }

  .nav-burger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 30px; height: 24px;
    justify-content: center;
    cursor: pointer;
    z-index: 60;
  }
  .nav-burger span {
    height: 2px;
    width: 100%;
    background: var(--ink);
    border-radius: 2px;
    transition: transform 0.25s ease, opacity 0.2s ease;
  }
  .nav-links {
    position: fixed;
    inset: 70px 0 auto 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    padding: 8px 22px 22px;
    transform: translateY(-130%);
    transition: transform 0.3s ease;
    box-shadow: var(--shadow);
  }
  .nav-links a {
    width: 100%;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
    font-size: 16px;
  }
  .nav-links .btn { margin-top: 16px; width: 100%; }
  .nav-toggle:checked ~ .nav-links { transform: translateY(0); }
  .nav-toggle:checked ~ .nav-burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle:checked ~ .nav-burger span:nth-child(2) { opacity: 0; }
  .nav-toggle:checked ~ .nav-burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

@media (max-width: 560px) {
  section { padding: 58px 0; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .hero { padding: 64px 0 56px; }
  .hero-meta { gap: 22px; }
}