/* =========================================================
   Plus500 外汇中文站  ·  jia500-cn.com
   品牌配色取自 Plus500 主站：深海军蓝 + 亮蓝强调色
   ========================================================= */

:root{
  --navy-900:#07183D;   /* Deep Cove  —— 页眉/页脚/英雄区底色 */
  --navy-800:#0b2a63;   /* 渐变过渡用 */
  --navy-700:#0c2780;   /* Catalina Blue */
  --blue:#11afff;       /* Dodger Blue —— 强调与按钮 */
  --blue-600:#0c8fd6;   /* 按钮 hover */
  --blue-050:#e9f6ff;   /* 浅蓝背景 */
  --ink:#0d1b30;        /* 正文主色 */
  --slate:#5a6b85;      /* 次级文字 */
  --line:#e3e9f2;       /* 描边/分隔线 */
  --mist:#f4f7fb;       /* 浅灰版块底色 */
  --paper:#ffffff;

  --font-zh:"PingFang SC","Microsoft YaHei","微软雅黑","Hiragino Sans GB",
            "Source Han Sans CN","Noto Sans SC","Heiti SC",sans-serif;
  --font-num:"Roboto","Helvetica Neue",Arial,var(--font-zh);

  --maxw:1180px;
  --radius:14px;
  --shadow:0 18px 48px rgba(7,24,61,.10);
  --shadow-sm:0 6px 20px rgba(7,24,61,.06);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-zh);
  color:var(--ink);
  background:var(--paper);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
ul{list-style:none}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(7,24,61,.96);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav{display:flex;align-items:center;gap:28px;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700}
.brand svg{width:34px;height:34px}
.brand .name{font-size:19px;letter-spacing:.2px}
.brand .name b{color:var(--blue)}

.nav-links{display:flex;align-items:center;gap:28px;margin-left:8px}
.nav-links a{
  color:#c7d3e8;font-size:15px;font-weight:500;
  padding:6px 2px;position:relative;transition:color .2s;
}
.nav-links a:hover,.nav-links a.active{color:#fff}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;
  background:var(--blue);border-radius:2px;
}
.nav-cta{margin-left:auto}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-zh);font-weight:600;font-size:15px;
  padding:11px 22px;border-radius:10px;cursor:pointer;border:0;
  transition:transform .12s ease,background .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(17,175,255,.32)}
.btn-primary:hover{background:var(--blue-600);transform:translateY(-1px)}
.btn-ghost{background:rgba(255,255,255,.10);color:#fff;border:1px solid rgba(255,255,255,.28)}
.btn-ghost:hover{background:rgba(255,255,255,.18)}
.btn-lg{padding:15px 32px;font-size:16px;border-radius:12px}

/* 移动端菜单（纯 CSS） */
.nav-toggle{display:none}
.hamburger{display:none;margin-left:auto;cursor:pointer;width:42px;height:42px;
  border-radius:9px;border:1px solid rgba(255,255,255,.25);align-items:center;justify-content:center}
.hamburger span,.hamburger span::before,.hamburger span::after{
  content:"";display:block;width:20px;height:2px;background:#fff;border-radius:2px;position:relative;transition:.2s}
.hamburger span::before{position:absolute;top:-6px}
.hamburger span::after{position:absolute;top:6px}

/* ---------- 英雄区 ---------- */
.hero{
  background:
    radial-gradient(900px 480px at 82% -10%,rgba(17,175,255,.22),transparent 60%),
    linear-gradient(160deg,var(--navy-900) 0%,#0a2256 55%,#0c2780 100%);
  color:#fff;overflow:hidden;
}
.hero-grid{
  display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;
  padding:78px 0 86px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.12em;
  color:var(--blue);text-transform:uppercase;margin-bottom:18px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--blue)}
.hero h1{
  font-size:clamp(30px,4.4vw,50px);line-height:1.22;font-weight:800;
  letter-spacing:-.5px;margin-bottom:20px;
}
.hero h1 em{color:var(--blue);font-style:normal}
.hero p.lead{font-size:18px;color:#c8d6ee;max-width:520px;margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:30px}
.hero-trust{display:flex;gap:26px;flex-wrap:wrap;color:#aebfdc;font-size:14px}
.hero-trust b{color:#fff;display:block;font-family:var(--font-num);font-size:22px;font-weight:700;margin-bottom:2px}

/* 英雄区签名元素：静态市场面板（纯装饰，无实时数据） */
.market-panel{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
  border-radius:18px;padding:18px;
  box-shadow:0 30px 70px rgba(0,0,0,.35);
}
.market-panel .mp-head{
  display:flex;justify-content:space-between;align-items:center;
  padding:4px 6px 14px;color:#9fb2d6;font-size:13px;
  border-bottom:1px solid rgba(255,255,255,.08);margin-bottom:14px;
}
.mp-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.mp-tile{
  background:rgba(7,24,61,.5);border:1px solid rgba(255,255,255,.08);
  border-radius:12px;padding:14px;
}
.mp-tile .cat{font-size:11px;letter-spacing:.1em;color:var(--blue);text-transform:uppercase}
.mp-tile .sym{font-size:15px;font-weight:600;color:#fff;margin:6px 0 10px}
.mp-tile svg{width:100%;height:34px}

/* ---------- 通用版块 ---------- */
.section{padding:84px 0}
.section.alt{background:var(--mist)}
.sec-head{max-width:680px;margin-bottom:46px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head .eyebrow{color:var(--blue-600)}
.sec-head .eyebrow::before{background:var(--blue-600)}
.sec-head h2{font-size:clamp(25px,3vw,34px);font-weight:800;letter-spacing:-.4px;line-height:1.3}
.sec-head p{color:var(--slate);font-size:17px;margin-top:14px}

/* 卡片网格 */
.cards{display:grid;gap:24px}
.cards.c3{grid-template-columns:repeat(3,1fr)}
.cards.c4{grid-template-columns:repeat(4,1fr)}
.card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 26px;box-shadow:var(--shadow-sm);transition:transform .18s,box-shadow .18s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card .ic{
  width:46px;height:46px;border-radius:11px;background:var(--blue-050);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;color:var(--blue-600);
}
.card .ic svg{width:24px;height:24px}
.card h3{font-size:18px;font-weight:700;margin-bottom:10px}
.card p{color:var(--slate);font-size:15px}

/* 市场分类网格 */
.market-list{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.market-item{
  display:flex;align-items:center;gap:14px;
  background:var(--paper);border:1px solid var(--line);border-radius:12px;
  padding:18px 18px;box-shadow:var(--shadow-sm);
}
.market-item .dot{width:40px;height:40px;border-radius:10px;flex:none;
  display:flex;align-items:center;justify-content:center;background:var(--navy-900);color:var(--blue)}
.market-item .dot svg{width:22px;height:22px}
.market-item .t{font-weight:700;font-size:15px}
.market-item .s{font-size:13px;color:var(--slate)}

/* 平台特性：图文左右 */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center}
.feature + .feature{margin-top:70px}
.feature.flip .ft-media{order:-1}
.ft-list{margin-top:22px;display:grid;gap:16px}
.ft-list li{display:flex;gap:14px;align-items:flex-start;color:var(--slate);font-size:15.5px}
.ft-list .chk{flex:none;width:24px;height:24px;border-radius:50%;background:var(--blue-050);
  color:var(--blue-600);display:flex;align-items:center;justify-content:center;margin-top:2px}
.ft-list .chk svg{width:14px;height:14px}
.ft-list b{color:var(--ink);font-weight:600}
.ft-media{background:linear-gradient(150deg,#0a2256,#0c2780);border-radius:18px;padding:30px;
  box-shadow:var(--shadow);min-height:240px;display:flex;align-items:center;justify-content:center}
.ft-media .mp-grid{width:100%}

/* 首页 CTA 横幅（仅首页正文使用） */
.cta-band{
  background:
    radial-gradient(700px 320px at 88% 10%,rgba(17,175,255,.25),transparent 60%),
    linear-gradient(150deg,var(--navy-900),#0c2780);
  border-radius:22px;color:#fff;padding:52px 56px;
  display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(23px,2.6vw,30px);font-weight:800;margin-bottom:8px}
.cta-band p{color:#c8d6ee;font-size:16px;max-width:540px}

/* 子页头部 */
.page-hero{
  background:linear-gradient(160deg,var(--navy-900),#0c2780);color:#fff;
  padding:64px 0 68px;
}
.page-hero .eyebrow{color:var(--blue)}
.page-hero .eyebrow::before{background:var(--blue)}
.page-hero h1{font-size:clamp(27px,3.4vw,40px);font-weight:800;letter-spacing:-.4px}
.page-hero p{color:#c8d6ee;font-size:17px;max-width:640px;margin-top:14px}

/* 长文正文 */
.prose{max-width:820px}
.prose h2{font-size:24px;font-weight:800;margin:46px 0 14px}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:18px;font-weight:700;margin:26px 0 8px}
.prose p{color:#3a485e;font-size:16px;margin-bottom:14px}
.prose ul.bul{margin:6px 0 16px;display:grid;gap:9px}
.prose ul.bul li{position:relative;padding-left:22px;color:#3a485e;font-size:16px}
.prose ul.bul li::before{content:"";position:absolute;left:2px;top:11px;width:7px;height:7px;
  border-radius:50%;background:var(--blue)}

/* 产品分类块 */
.prod{display:grid;gap:22px}
.prod-row{
  display:grid;grid-template-columns:64px 1fr;gap:20px;align-items:start;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow-sm);
}
.prod-row .pic{width:54px;height:54px;border-radius:12px;background:var(--navy-900);
  color:var(--blue);display:flex;align-items:center;justify-content:center}
.prod-row .pic svg{width:28px;height:28px}
.prod-row h3{font-size:18px;font-weight:700;margin-bottom:6px}
.prod-row p{color:var(--slate);font-size:15px}

/* FAQ */
.faq{max-width:840px;display:grid;gap:12px}
.faq details{
  border:1px solid var(--line);border-radius:12px;background:var(--paper);
  box-shadow:var(--shadow-sm);overflow:hidden;
}
.faq summary{
  list-style:none;cursor:pointer;padding:20px 24px;font-weight:600;font-size:16.5px;
  display:flex;justify-content:space-between;align-items:center;gap:16px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary .pm{flex:none;width:22px;height:22px;color:var(--blue-600);transition:transform .2s}
.faq details[open] summary .pm{transform:rotate(45deg)}
.faq .ans{padding:0 24px 22px;color:var(--slate);font-size:15.5px}

/* 风险提示条 */
.risk{background:#0a1b3a;color:#9fb2d6;font-size:13px;line-height:1.7;padding:20px 0}
.risk .wrap{display:flex;gap:14px;align-items:flex-start}
.risk svg{flex:none;width:20px;height:20px;color:var(--blue);margin-top:2px}
.risk strong{color:#dce6f7}

/* ---------- 页脚（三列式） ---------- */
.site-footer{background:var(--navy-900);color:#aebfdc;padding:58px 0 26px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:44px}
.foot-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;margin-bottom:16px}
.foot-brand svg{width:30px;height:30px}
.foot-brand .name b{color:var(--blue)}
.foot-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:.02em}
.foot-col p{font-size:14px;line-height:1.8;color:#9fb2d6;max-width:340px}
.foot-list{display:grid;gap:10px}
.foot-list li{font-size:14px;color:#9fb2d6}
.foot-contact li{font-size:14px;color:#9fb2d6;margin-bottom:10px;display:flex;gap:10px;align-items:flex-start}
.foot-contact svg{flex:none;width:16px;height:16px;color:var(--blue);margin-top:3px}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.08);margin-top:40px;padding-top:22px;
  font-size:13px;color:#7f90b0;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
}

/* ---------- 响应式 ---------- */
@media(max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:40px;padding:60px 0 64px}
  .market-panel{max-width:460px}
  .feature{grid-template-columns:1fr;gap:28px}
  .feature.flip .ft-media{order:0}
  .cards.c4{grid-template-columns:1fr 1fr}
  .cards.c3{grid-template-columns:1fr 1fr}
  .market-list{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:720px){
  .nav-links,.nav-cta{
    position:absolute;top:68px;left:0;right:0;background:var(--navy-900);
    flex-direction:column;align-items:stretch;gap:0;padding:8px 0;
    border-bottom:1px solid rgba(255,255,255,.08);display:none;
  }
  .nav-links a{padding:14px 24px}
  .nav-links a.active::after{display:none}
  .nav-cta{padding:14px 24px}
  .nav-cta .btn{width:100%}
  .hamburger{display:flex}
  .nav-toggle:checked ~ .nav-links{display:flex}
  .nav-toggle:checked ~ .nav-cta{display:flex}
  .cards.c3,.cards.c4,.market-list{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:30px}
  .cta-band{padding:38px 28px}
  .section{padding:60px 0}
  .prod-row{grid-template-columns:1fr}
  .prod-row .pic{margin-bottom:-6px}
}
@media(prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important;transition:none!important}
}