/* ===== 设计 token（自有品牌基调，非原站资产） ===== */
:root {
  --bg: #ffffff;
  --ink: #10122a;
  --ink-soft: #5b6078;
  --brand: #1a5cff;
  --brand-2: #00b4c8;
  --brand-grad: linear-gradient(120deg, #1a5cff 0%, #00b4c8 100%);
  --navy: #0a0f2e;
  --line: #e6e9f2;
  --bg-soft: #f5f7fd;
  --radius: 14px;
  --shadow: 0 12px 34px rgba(20, 30, 90, .10);
  --container: 1180px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", "Noto Sans", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--ink); background: var(--bg); line-height: 1.6; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; }
a { color: var(--brand); text-decoration: none; }
ul, ol { list-style: none; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }

/* ===== 按钮 ===== */
.btn { display: inline-flex; align-items: center; gap: 8px; border: 1px solid transparent; border-radius: 10px;
  padding: 11px 20px; font-weight: 600; font-size: 15px; cursor: pointer; transition: .18s ease; white-space: nowrap; }
.btn-primary { background: var(--brand-grad); color: #fff; box-shadow: 0 6px 18px rgba(26,92,255,.28); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(26,92,255,.34); }
.btn-ghost { background: #fff; border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }
.btn-light { background: #fff; color: var(--navy); }
.btn-lg { padding: 14px 26px; font-size: 16px; }

/* ===== 头部 ===== */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.86); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; gap: 24px; min-height: 66px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; color: var(--ink); font-size: 19px; }
.brand-logo { width: 30px; height: 30px; }
.main-nav { margin-left: auto; display: flex; gap: 22px; }
.main-nav a { color: var(--ink-soft); font-weight: 500; }
.main-nav a:hover { color: var(--ink); }
.header-actions { display: flex; align-items: center; gap: 10px; }

/* 语言切换 */
.locale-switcher { position: relative; }
.locale-current { background: none; border: 1px solid var(--line); border-radius: 9px; padding: 7px 12px; cursor: pointer; font-size: 14px; color: var(--ink); display: inline-flex; gap: 6px; align-items: center; }
.locale-list { position: absolute; right: 0; top: calc(100% + 6px); min-width: 190px; background: #fff; border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); padding: 6px; display: none; max-height: 60vh; overflow: auto; z-index: 60; }
.locale-switcher.is-open .locale-list { display: block; }
.locale-list a { display: flex; justify-content: space-between; gap: 12px; padding: 8px 10px; border-radius: 8px; color: var(--ink); font-size: 14px; }
.locale-list a:hover { background: var(--bg-soft); }
.locale-list a.is-current { color: var(--brand); font-weight: 700; }
.locale-tag { color: #9aa0b8; font-size: 12px; text-transform: uppercase; }

.nav-toggle { display: none; background: none; border: 0; width: 30px; height: 30px; position: relative; cursor: pointer; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after { content: ''; position: absolute; left: 3px; width: 24px; height: 2px; background: var(--ink); }
.nav-toggle span { top: 14px; } .nav-toggle span::before { top: -7px; } .nav-toggle span::after { top: 7px; }

/* ===== hero ===== */
.hero { background: radial-gradient(1200px 520px at 80% -10%, #e6edff 0%, rgba(255,255,255,0) 60%), linear-gradient(180deg, #f4f7ff 0%, #fff 100%); padding: 96px 0 80px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.pill { display: inline-block; background: #e7ecff; color: var(--brand); font-weight: 600; font-size: 13px; border-radius: 999px; padding: 5px 14px; margin-bottom: 18px; }
.hero h1 { font-size: clamp(34px, 5vw, 58px); line-height: 1.08; letter-spacing: -0.02em; margin-bottom: 18px; }
.lead { color: var(--ink-soft); font-size: 19px; max-width: 34em; }
.hero-actions { display: flex; gap: 14px; margin: 26px 0 30px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 34px; flex-wrap: wrap; }
.stat dt { font-size: 26px; font-weight: 800; color: var(--navy); }
.stat dd { color: var(--ink-soft); font-size: 14px; }
.hero-visual { position: relative; aspect-ratio: 16 / 9; min-height: 300px; border-radius: 18px; overflow: hidden; box-shadow: var(--shadow); background: var(--navy); }
.hero-visual .mock-dashboard { position: absolute; inset: 0; padding: 26px; display: flex; flex-direction: column; gap: 16px; }
.hero-visual video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity .35s ease; }
.hero-visual video.is-playing { opacity: 1; }
.mock-bar { height: 14px; border-radius: 8px; background: rgba(255,255,255,.18); width: 45%; }
.mock-bar.wide { width: 72%; }
.mock-grid { flex: 1; border-radius: 10px; background:
  repeating-linear-gradient(0deg, rgba(255,255,255,.06) 0 1px, transparent 1px 30px),
  repeating-linear-gradient(90deg, rgba(255,255,255,.06) 0 1px, transparent 1px 30px),
  linear-gradient(135deg, rgba(26,92,255,.9), rgba(0,180,200,.7)); }

/* ===== section ===== */
.section { padding: 84px 0; }
.section:nth-child(even) { background: var(--bg-soft); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.kicker { color: var(--brand); font-weight: 700; text-transform: uppercase; letter-spacing: .08em; font-size: 13px; margin-bottom: 10px; }
.section-head h2 { font-size: clamp(26px, 3.4vw, 40px); letter-spacing: -0.01em; margin-bottom: 12px; }
.section-head p { color: var(--ink-soft); font-size: 17px; }

.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 22px; }
.feature-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; transition: .2s ease; }
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.feature-card h3 { margin-bottom: 8px; font-size: 18px; }
.feature-card p { color: var(--ink-soft); font-size: 15px; }

.step-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 22px; counter-reset: step; }
.step-list li { counter-increment: step; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 26px 26px 64px; position: relative; }
.step-list li::before { content: counter(step); position: absolute; left: 22px; top: 26px; width: 28px; height: 28px; border-radius: 50%;
  background: var(--brand-grad); color: #fff; display: grid; place-items: center; font-weight: 700; }
.step-list h3 { margin-bottom: 6px; }
.step-list p { color: var(--ink-soft); font-size: 15px; }

.testimonial-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 22px; }
.testimonial { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.testimonial p { font-size: 17px; }
.testimonial footer { margin-top: 14px; color: var(--ink-soft); font-size: 14px; }

.faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.faq-item summary { cursor: pointer; padding: 16px 20px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; }
.faq-item summary::after { content: '+'; font-size: 20px; color: var(--brand); }
.faq-item[open] summary::after { content: '−'; }
.faq-item p { padding: 0 20px 16px; color: var(--ink-soft); }

/* ===== CTA ===== */
.cta { background: var(--brand-grad); color: #fff; text-align: center; padding: 84px 0; }
.cta h2 { font-size: clamp(26px, 3.4vw, 40px); margin-bottom: 12px; }
.cta p { opacity: .9; margin-bottom: 26px; }

/* ===== footer ===== */
.site-footer { background: var(--navy); color: #cdd2e8; padding: 64px 0 30px; }
.footer-top { display: grid; grid-template-columns: 1.2fr 2fr; gap: 48px; margin-bottom: 44px; }
.footer-brand .brand { color: #fff; margin-bottom: 12px; }
.footer-brand p { color: #9aa0b8; }
.footer-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.footer-col h4 { color: #fff; margin-bottom: 14px; font-size: 15px; }
.footer-col li { margin-bottom: 9px; }
.footer-col a { color: #9aa0b8; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 22px; color: #7b82a2; font-size: 14px; }

.page-narrow { max-width: 760px; padding-top: 80px; padding-bottom: 80px; }
.page-narrow h1 { margin-bottom: 16px; }

/* ===== 响应式 ===== */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .main-nav, .header-actions .btn { display: none; }
  .nav-toggle { display: block; }
}

/* ===== logos 信任条 ===== */
.logos-heading { text-align:center; color: var(--ink-soft); margin-bottom: 22px; }
.logos-row { display:flex; flex-wrap:wrap; justify-content:center; gap: 14px 30px; }
.logos-row li span { color:#9aa0b8; font-weight:600; }

/* ===== 价格方案 ===== */
.plan-grid { display:grid; grid-template-columns: repeat(auto-fit,minmax(250px,1fr)); gap:22px; align-items:stretch; }
.plan-card { background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:28px 24px; display:flex; flex-direction:column; gap:8px; }
.plan-card.is-featured { border:0; background: var(--navy); color:#fff; box-shadow: var(--shadow); transform: scale(1.02); }
.plan-card.is-featured .plan-tag, .plan-card.is-featured .plan-feats li { color:#cdd2e8; }
.plan-price b { font-size:34px; } .plan-price span { color:var(--ink-soft); }
.plan-card.is-featured .plan-price span { color:#9aa0b8; }
.plan-feats { margin: 6px 0 14px; display:flex; flex-direction:column; gap:7px; font-size:14px; color:var(--ink-soft); list-style:none; }
.plan-feats li::before { content:'✓ '; color:var(--brand-2); }
.plan-card.is-featured .plan-feats li::before { color:#00e0c8; }
.plan-card .btn { margin-top:auto; }

/* ===== stat 网格 ===== */
.stat-grid { display:grid; grid-template-columns: repeat(auto-fit,minmax(180px,1fr)); gap:18px; }
.stat-grid .stat-card { text-align:center; border:1px solid var(--line); border-radius:var(--radius); padding:24px; }
.stat-grid b { display:block; font-size:30px; }
.stat-grid span { color:var(--ink-soft); }

/* ===== 富文本正文 ===== */
.rich-wrap { max-width:820px; }
.rich-p { color:var(--ink-soft); font-size:17px; margin:0 0 18px; }
.heading-block + .section, .section + .heading-block { }

/* ===== blog ===== */
.blog-wrap { padding: 70px 20px 90px; max-width: 1000px; }
.post-grid { display: grid; grid-template-columns: repeat(auto-fill,minmax(280px,1fr)); gap: 20px; }
.post-card { background:#fff; border:1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.post-card h2 { font-size: 19px; margin-bottom: 6px; }
.post-card p { color: var(--ink-soft); font-size: 15px; }
.post-meta { color: #9aa0b8; font-size: 13px; margin-bottom: 8px; }
.article-wrap { max-width: 800px; padding: 60px 20px 90px; }
.article-wrap h1 { font-size: clamp(28px,4vw,44px); margin-bottom: 8px; }
.article-body { margin-top: 26px; font-size: 17px; color: var(--ink); }
.article-body h2 { font-size: 24px; margin: 30px 0 12px; }
.article-body p { margin-bottom: 18px; }
.muted { color:#9aa0b8; }

/* ===== 移动端导航面板 ===== */
@media (max-width: 960px) {
  .main-nav {
    display: none;
    position: fixed; left: 0; right: 0; top: 66px; bottom: 0;
    background: #fff; flex-direction: column; gap: 0;
    padding: 12px 0; box-shadow: 0 10px 30px rgba(20,30,90,.1); overflow: auto; z-index: 45;
  }
  .main-nav.is-open { display: flex; }
  .main-nav a { padding: 14px 24px; border-bottom: 1px solid var(--bg-soft); color: var(--ink); font-size: 17px; }
  .header-actions { gap: 6px; }
  .header-inner { min-height: 60px; }
  .locale-list { max-height: 50vh; }
}
/* 触摸友好：主 CTA 在移动端隐藏副按钮群，仅保留主按钮更易点 */
@media (max-width: 520px) {
  .hero { padding: 60px 0 50px; }
  .hero h1 { font-size: 30px; }
  .btn-lg { padding: 13px 20px; font-size: 15px; }
  .section { padding: 54px 0; }
  .hero-stats { gap: 18px; }
  .stat dt { font-size: 22px; }
}

/* ===== 登录注册 ===== */
.auth-wrap { min-height: 66vh; display: grid; place-items: center; padding: 48px 20px 72px; }
.auth-card { width: 100%; max-width: 400px; background:#fff; border:1px solid var(--line); border-radius:18px; box-shadow: var(--shadow); padding: 26px 26px 30px; }
.auth-tabs { display:flex; gap:6px; background: var(--bg-soft); border-radius: 12px; padding:5px; margin-bottom: 20px; }
.auth-tabs a { flex:1; text-align:center; padding:9px 0; border-radius:9px; color:var(--ink-soft); font-weight:600; }
.auth-tabs a.is-on { background:#fff; color:var(--brand); box-shadow: 0 2px 8px rgba(20,30,90,.08); }
.auth-card form label { display:block; font-size:13px; color:var(--ink-soft); margin:12px 0 4px; }
.auth-card form input { width:100%; padding:12px 14px; border:1px solid var(--line); border-radius:10px; font-size:15px; margin-top:5px; }
.auth-card form input:focus { outline:none; border-color:var(--brand); }
.btn-block { width:100%; justify-content:center; margin-top:18px; }
.auth-alt { margin-top:16px; text-align:center; font-size:14px; color:var(--ink-soft); }
.auth-error { background:#fdecec; color:#b02a2a; padding:10px 12px; border-radius:9px; font-size:13px; margin-bottom:12px; }
.auth-ok { background:#e5f8ee; color:#0c7a43; padding:10px 12px; border-radius:9px; font-size:13px; margin-bottom:12px; }
.whoami { color:var(--ink-soft); font-size:14px; font-weight:600; }
.btn-sm-link { padding:7px 12px; font-size:13px; }

/* ===== 活动条 / 弹窗 / toast ===== */
.promo-bar { display:flex; align-items:center; justify-content:center; gap:10px; padding:8px 16px;
  background: var(--brand-grad); color:#fff; font-weight:600; font-size:14px; text-align:center; }
.promo-bar b { font-size:18px; }
.promo-bar:hover { filter: brightness(1.06); }
.promo-chip { background:#0c7a43; color:#fff; font-size:12px; font-weight:700; padding:3px 8px; border-radius:999px; }
.campaign-modal[hidden]{display:none}
.campaign-modal { position:fixed; inset:0; z-index:200; display:grid; place-items:center; padding:18px; }
.campaign-backdrop { position:absolute; inset:0; background:rgba(10,15,46,.55); backdrop-filter: blur(2px); }
.campaign-panel { position:relative; width:100%; max-width:460px; max-height:92vh; overflow:auto; background:#fff;
  border-radius:20px; padding:30px 28px 26px; box-shadow:0 30px 80px rgba(5,10,40,.4); text-align:center; animation:cpop .28s ease; }
@keyframes cpop { from { transform: translateY(14px) scale(.98); opacity:0 } to { transform:none; opacity:1 } }
.campaign-badge { font-size:44px; line-height:1; margin-bottom:6px; }
.campaign-panel h2 { font-size:26px; margin-bottom:6px; }
.campaign-lead { font-weight:700; color:var(--brand); margin-bottom:8px; font-size:17px; }
.campaign-body { color:var(--ink-soft); font-size:15px; margin-bottom:14px; }
.campaign-rules { text-align:left; margin:0 auto 18px; max-width:360px; display:flex; flex-direction:column; gap:8px; }
.campaign-rules li { font-size:13.5px; color:var(--ink-soft); padding-left:22px; position:relative; }
.campaign-rules li::before { content:'✓'; position:absolute; left:0; color:var(--brand-2); font-weight:700; }
.campaign-actions { display:flex; flex-direction:column; gap:10px; margin-bottom:12px; }
.campaign-actions .btn-block { margin-top:0; }
.campaign-terms { font-size:11.5px; color:#9aa0b8; }
.campaign-x { position:absolute; top:14px; right:16px; background:none; border:0; font-size:18px; color:#9aa0b8; cursor:pointer; }
.campaign-x:hover { color:var(--ink); }
.toast { position:fixed; top:16px; left:50%; transform:translateX(-50%); z-index:300; background:#0c7a43; color:#fff;
  padding:12px 20px; border-radius:12px; font-weight:600; box-shadow:var(--shadow); animation:cpop .3s ease; }
.toast[hidden]{display:none}
.campaign-bindnote{font-size:12.5px;color:#5b6078;background:#f4f7ff;border:1px solid #e2e8ff;border-radius:10px;padding:9px 12px;margin-bottom:12px;text-align:left}
.campaign-bindlabel{display:block;text-align:left;font-size:13px;color:#5b6078;margin-bottom:5px}
.campaign-addr{width:100%;box-sizing:border-box;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:14px;margin-bottom:12px;font-family:ui-monospace,Menlo,monospace}
.campaign-addr:focus{outline:none;border-color:var(--brand)}
.campaign-wallet-list{display:flex;flex-direction:column;gap:8px;margin-bottom:12px;text-align:left}
.campaign-wallet-opt{display:flex;align-items:flex-start;gap:10px;border:1px solid var(--line);border-radius:10px;padding:10px 12px;cursor:pointer;background:#fff}
.campaign-wallet-opt:hover{border-color:var(--brand)}
.campaign-wallet-opt input{ margin-top:3px; flex:0 0 auto}
.campaign-wallet-opt-body{min-width:0;display:block}
.campaign-wallet-net{display:block;font-size:12px;color:#5b6078;margin-bottom:2px}
.campaign-wallet-addr{display:block;font-family:ui-monospace,Menlo,monospace;font-size:12px;color:var(--ink);word-break:break-all}