/* ============================================================
   Kraken 外汇中文站  —  styles.css
   品牌色：Kraken 紫  ·  本地化中文字体  ·  响应式
   ============================================================ */

:root{
  --brand:#7132F5;
  --brand-2:#5421C9;
  --brand-ink:#2A1466;
  --ink:#0C0A1E;
  --ink-2:#171338;
  --text:#1B1C28;
  --muted:#5E5F77;
  --bg:#FFFFFF;
  --soft:#F5F3FD;
  --soft-2:#EFE9FF;
  --line:#E9E6F4;
  --shadow:0 18px 44px -24px rgba(53,24,128,.45);
  --radius:16px;
  --radius-sm:11px;
  --maxw:1160px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Hiragino Sans GB","Heiti SC","WenQuanYi Micro Hei",sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  color:var(--text);
  background:var(--bg);
  line-height:1.75;
  font-size:16.5px;
  letter-spacing:.01em;
}
img,svg{display:block;max-width:100%}
a{color:var(--brand-2);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.3;letter-spacing:.005em;color:var(--ink);margin:0}
p{margin:0}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.5em;
  font-size:15px;font-weight:600;line-height:1;
  padding:13px 22px;border-radius:11px;border:1px solid transparent;
  cursor:pointer;transition:transform .15s ease,box-shadow .2s ease,background .2s ease;
  white-space:nowrap;
}
.btn:hover{text-decoration:none}
.btn-primary{
  background:var(--brand);color:#fff;
  box-shadow:0 12px 26px -12px rgba(113,50,245,.7);
}
.btn-primary:hover{background:#5e25e6;transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--brand-2);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand);background:var(--soft)}
.btn-lg{padding:16px 30px;font-size:16.5px;border-radius:13px}
.btn-on-dark{background:#fff;color:var(--brand-ink)}
.btn-on-dark:hover{background:#f1ecff;transform:translateY(-1px)}

/* ---------- 顶部导航 ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(150%) blur(10px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand .logo{width:30px;height:30px}
.brand .tag{font-size:12px;font-weight:600;color:var(--muted);
  padding:3px 8px;border:1px solid var(--line);border-radius:999px;margin-left:2px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{color:#3a3b4d;font-weight:500;font-size:15px;padding:9px 13px;border-radius:9px}
.nav-links a:hover{background:var(--soft);color:var(--brand-2);text-decoration:none}
.nav-links a.active{color:var(--brand-2);background:var(--soft)}
.nav-cta-fixed{margin-left:14px}

/* 汉堡菜单（纯 CSS） */
.nav-toggle{display:none}
.burger{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);
  border-radius:10px;cursor:pointer;align-items:center;justify-content:center;background:#fff}
.burger span,.burger span::before,.burger span::after{
  content:"";display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.burger span::before{position:absolute;top:-6px}
.burger span::after{position:absolute;top:6px}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;color:#fff;
  background:radial-gradient(900px 520px at 78% -10%,rgba(139,87,255,.55),transparent 60%),
             linear-gradient(135deg,#160a47 0%,#3a1ba0 52%,#6b2ff0 100%)}
.hero::after{content:"";position:absolute;inset:0;
  background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40'%3E%3Cpath d='M0 39.5H40M39.5 0V40' stroke='%23ffffff' stroke-opacity='0.05'/%3E%3C/svg%3E");
  pointer-events:none}
.hero-deco{position:absolute;right:-60px;top:-40px;width:560px;opacity:.5;pointer-events:none}
.hero-inner{position:relative;z-index:2;padding:84px 0 92px;max-width:720px}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;
  color:#d9c9ff;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
  padding:6px 14px;border-radius:999px;margin-bottom:22px}
.hero h1{font-size:clamp(31px,5.2vw,52px);color:#fff;font-weight:800;letter-spacing:.01em}
.hero h1 .hl{color:#c7b1ff}
.hero p.lead{margin-top:20px;font-size:clamp(16px,2vw,19px);color:#e7deff;max-width:600px;line-height:1.85}
.hero-actions{margin-top:34px;display:flex;flex-wrap:wrap;gap:14px}
.hero-stats{margin-top:46px;display:flex;flex-wrap:wrap;gap:38px}
.hero-stats .s{min-width:120px}
.hero-stats .num{font-size:27px;font-weight:800;color:#fff}
.hero-stats .lab{font-size:13.5px;color:#cdbdf5;margin-top:2px}

/* ---------- 通用区块 ---------- */
.section{padding:74px 0}
.section.alt{background:var(--soft)}
.section-head{max-width:680px;margin-bottom:40px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.kicker{font-size:13px;font-weight:700;letter-spacing:.09em;color:var(--brand);
  text-transform:uppercase;margin-bottom:12px}
.section h2{font-size:clamp(24px,3.4vw,34px);font-weight:800}
.section-head p{margin-top:14px;color:var(--muted);font-size:16.5px}

/* 卡片栅格 */
.grid{display:grid;gap:20px}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease}
.card:hover{border-color:#cdbdf6;box-shadow:var(--shadow);transform:translateY(-2px)}
.card .ic{width:46px;height:46px;border-radius:12px;background:var(--soft-2);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;color:var(--brand-2)}
.card h3{font-size:18.5px;font-weight:700;margin-bottom:9px}
.card p{color:var(--muted);font-size:15.5px;line-height:1.8}
.section.alt .card{background:#fff}

/* 双栏文图 */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:54px;align-items:center}
.split h2{margin-bottom:18px}
.split p{color:var(--muted);margin-bottom:16px;line-height:1.9}
.checklist{list-style:none;padding:0;margin:8px 0 0}
.checklist li{position:relative;padding:7px 0 7px 32px;color:var(--text)}
.checklist li::before{content:"";position:absolute;left:0;top:13px;width:18px;height:18px;
  border-radius:50%;background:var(--soft-2);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2.5 6.2l2.3 2.3 4.7-5' stroke='%237132F5' stroke-width='1.8' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:center}
.panel{background:linear-gradient(150deg,#1c1147,#4a23c4);border-radius:var(--radius);
  padding:36px;color:#fff;box-shadow:var(--shadow)}
.panel h3{color:#fff;font-size:20px;margin-bottom:18px}
.panel .row{display:flex;justify-content:space-between;align-items:center;
  padding:13px 0;border-bottom:1px solid rgba(255,255,255,.13)}
.panel .row:last-child{border-bottom:0}
.panel .row span{color:#d4c6ff;font-size:15px}
.panel .row b{font-weight:700;font-size:15.5px}

/* 编号步骤 */
.steps{counter-reset:st;display:grid;gap:18px}
.step{display:flex;gap:18px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:24px 26px}
.step::before{counter-increment:st;content:counter(st,decimal-leading-zero);
  font-weight:800;font-size:20px;color:var(--brand);flex:0 0 auto;
  width:46px;height:46px;border-radius:11px;background:var(--soft-2);
  display:flex;align-items:center;justify-content:center}
.step h3{font-size:17.5px;margin-bottom:6px}
.step p{color:var(--muted);font-size:15.5px}

/* 表格 */
.tbl{width:100%;border-collapse:collapse;border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;font-size:15.5px}
.tbl th,.tbl td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line)}
.tbl th{background:var(--soft);font-weight:700;color:var(--ink);font-size:14.5px}
.tbl tr:last-child td{border-bottom:0}
.tbl td:first-child{font-weight:600;color:var(--ink)}

/* 文章排版（分页面正文） */
.prose{max-width:780px}
.prose h2{font-size:clamp(22px,3vw,29px);margin:46px 0 16px}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:19px;margin:30px 0 10px}
.prose p{color:#34354a;margin:0 0 16px;line-height:1.9}
.prose ul{margin:0 0 16px;padding-left:22px;color:#34354a}
.prose li{margin:7px 0;line-height:1.85}
.prose .note{background:var(--soft);border-left:3px solid var(--brand);
  border-radius:0 10px 10px 0;padding:16px 20px;color:#3a3b4d;font-size:15.5px;margin:22px 0}

/* 页面小标头 */
.pagehead{background:linear-gradient(135deg,#160a47,#4f24cf);color:#fff;padding:56px 0 50px}
.pagehead .crumb{font-size:13.5px;color:#cdbdf5;margin-bottom:14px}
.pagehead .crumb a{color:#e2d6ff}
.pagehead h1{font-size:clamp(26px,4vw,40px);color:#fff;font-weight:800}
.pagehead p{margin-top:14px;color:#e3d8ff;max-width:640px;line-height:1.8}

/* FAQ */
.faq{display:grid;gap:14px;max-width:840px}
.qa{border:1px solid var(--line);border-radius:var(--radius);padding:24px 26px;background:#fff}
.qa h3{font-size:17.5px;margin-bottom:8px;color:var(--ink)}
.qa p{color:var(--muted);font-size:15.5px;line-height:1.85}

/* ---------- 页脚 ---------- */
.foot{background:var(--ink);color:#c9c6dd;padding:58px 0 30px;font-size:15px}
.foot-cols{display:grid;grid-template-columns:1.5fr 1fr 1.2fr;gap:46px}
.foot .brand{color:#fff;margin-bottom:16px}
.foot .brand .tag{color:#b6a9e6;border-color:rgba(255,255,255,.2)}
.foot p{line-height:1.85;color:#a9a6c4}
.foot h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:.04em}
.foot ul{list-style:none;margin:0;padding:0}
.foot li{padding:5px 0;color:#a9a6c4}
.foot .contact li{display:flex;gap:9px;align-items:flex-start}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:44px;padding-top:22px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;color:#8b88a8;font-size:13.5px}
.disclaimer{margin-top:14px;color:#7d7a9b;font-size:12.5px;line-height:1.7;max-width:880px}

/* ---------- 响应式 ---------- */
@media(max-width:900px){
  .g-3,.g-4{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:34px}
  .foot-cols{grid-template-columns:1fr 1fr;gap:32px}
  .foot .col-about{grid-column:1 / -1}
}
@media(max-width:680px){
  .burger{display:flex;order:3}
  .nav-cta-fixed{margin-left:auto;order:2;padding:11px 16px;font-size:14px}
  .nav-links{position:absolute;left:0;right:0;top:68px;flex-direction:column;align-items:stretch;
    gap:0;background:#fff;border-bottom:1px solid var(--line);padding:8px 16px 16px;
    margin-left:0;max-height:0;overflow:hidden;transition:max-height .28s ease;box-shadow:var(--shadow)}
  .nav-toggle:checked ~ .nav-links{max-height:430px}
  .nav-links a{padding:13px 10px;border-radius:8px;border-bottom:1px solid var(--line)}
  .nav-links a:last-child{border-bottom:0}
  .g-3,.g-4,.g-2{grid-template-columns:1fr}
  .hero-inner{padding:62px 0 66px}
  .hero-stats{gap:26px}
  .section{padding:54px 0}
  .foot-cols{grid-template-columns:1fr}
  .foot .col-about{grid-column:auto}
}

@media(prefers-reduced-motion:reduce){
  *{transition:none!important;scroll-behavior:auto!important}
}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}