/* ============================================================
   权益API中转网关 · 设计系统
   风格：深色赛博 / 玻璃拟态 / B端专业
   ============================================================ */
:root {
  --bg: #070b14;
  --bg-soft: #0a1122;
  --panel: rgba(255, 255, 255, .045);
  --panel-2: rgba(255, 255, 255, .07);
  --line: rgba(148, 163, 184, .16);
  --line-strong: rgba(148, 163, 184, .28);
  --txt: #e6edf7;
  --txt-2: #9fb0c6;
  --txt-3: #64748b;
  --cyan: #22d3ee;
  --indigo: #6366f1;
  --violet: #a855f7;
  --emerald: #34d399;
  --amber: #fbbf24;
  --rose: #fb7185;
  --grad: linear-gradient(120deg, #22d3ee, #6366f1 52%, #a855f7);
  --grad-soft: linear-gradient(120deg, rgba(34, 211, 238, .14), rgba(99, 102, 241, .14), rgba(168, 85, 247, .14));
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 18px 50px rgba(2, 6, 23, .55);
  --font: "Inter", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Consolas, monospace;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--txt);
  line-height: 1.75;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
/* 背景网格 + 光晕 */
body::before {
  content: "";
  position: fixed; inset: 0;
  background-image:
    radial-gradient(ellipse 60% 45% at 15% -10%, rgba(34, 211, 238, .12), transparent 60%),
    radial-gradient(ellipse 55% 40% at 88% 8%, rgba(168, 85, 247, .12), transparent 60%),
    linear-gradient(rgba(148, 163, 184, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, .05) 1px, transparent 1px);
  background-size: auto, auto, 56px 56px, 56px 56px;
  pointer-events: none;
  z-index: -1;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
code, pre, .mono { font-family: var(--mono); }

/* ---------- 布局 ---------- */
.wrap { width: min(1160px, 92%); margin: 0 auto; }
.section { padding: 72px 0; }
.section-tight { padding: 46px 0; }

/* ---------- 导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 60;
  background: rgba(7, 11, 20, .72);
  backdrop-filter: blur(18px) saturate(1.3);
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  border-bottom: 1px solid var(--line);
}
.nav-in { display: flex; align-items: center; gap: 26px; height: 62px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 16px; letter-spacing: .3px; }
.brand-logo {
  width: 32px; height: 32px; border-radius: 9px;
  background: var(--grad);
  display: grid; place-items: center;
  font-family: var(--mono); font-size: 13px; font-weight: 800; color: #04101c;
  box-shadow: 0 6px 18px rgba(99, 102, 241, .4);
}
.brand small { display: block; font-size: 10px; color: var(--txt-3); font-weight: 500; letter-spacing: 1.5px; }
.nav-links { display: flex; gap: 4px; margin-left: 8px; flex: 1; }
.nav-links a {
  padding: 8px 13px; border-radius: 9px; font-size: 13.5px; color: var(--txt-2);
  transition: .18s;
}
.nav-links a:hover { color: var(--txt); background: var(--panel-2); }
.nav-links a.on { color: #fff; background: var(--grad-soft); box-shadow: inset 0 0 0 1px rgba(99, 102, 241, .35); }
.nav-cta { display: flex; gap: 10px; align-items: center; }
.nav-toggle { display: none; background: none; border: 1px solid var(--line-strong); color: var(--txt); width: 38px; height: 38px; border-radius: 10px; font-size: 16px; cursor: pointer; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 22px; border-radius: 12px; font-size: 14px; font-weight: 600;
  border: none; cursor: pointer; transition: .2s; white-space: nowrap;
}
.btn-p { background: var(--grad); color: #061021; box-shadow: 0 10px 28px rgba(99, 102, 241, .35); }
.btn-p:hover { transform: translateY(-2px); box-shadow: 0 16px 36px rgba(99, 102, 241, .45); }
.btn-g { background: var(--panel-2); color: var(--txt); box-shadow: inset 0 0 0 1px var(--line-strong); }
.btn-g:hover { background: rgba(255, 255, 255, .1); transform: translateY(-2px); }
.btn-sm { padding: 8px 15px; font-size: 13px; border-radius: 10px; }

/* ---------- 玻璃卡片 ---------- */
.glass {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.card { padding: 26px; transition: .25s; }
.card:hover { border-color: rgba(99, 102, 241, .4); transform: translateY(-4px); box-shadow: var(--shadow); }
.card .ic {
  width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center;
  background: var(--grad-soft); box-shadow: inset 0 0 0 1px rgba(99, 102, 241, .3);
  font-family: var(--mono); font-size: 15px; font-weight: 700; color: var(--cyan);
  margin-bottom: 16px;
}
.card h3 { font-size: 16.5px; margin-bottom: 8px; letter-spacing: .2px; }
.card p { color: var(--txt-2); font-size: 13.5px; line-height: 1.85; }

/* ---------- Hero ---------- */
.hero { padding: 92px 0 66px; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: 999px; font-size: 12px; color: var(--cyan);
  background: rgba(34, 211, 238, .09); box-shadow: inset 0 0 0 1px rgba(34, 211, 238, .28);
  margin-bottom: 22px;
}
.hero-tag .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }
.hero h1 {
  font-size: clamp(32px, 5vw, 52px); line-height: 1.22; letter-spacing: .5px; font-weight: 800;
}
.hero h1 .g {
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .sub { margin: 20px 0 32px; color: var(--txt-2); font-size: 16.5px; max-width: 720px; line-height: 1.95; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 14px; margin-top: 46px; flex-wrap: wrap; }
.stat { flex: 1; min-width: 160px; padding: 18px 22px; }
.stat .n { font-size: 26px; font-weight: 800; font-family: var(--mono); background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat .l { font-size: 12px; color: var(--txt-3); margin-top: 2px; letter-spacing: 1px; }

/* ---------- 标题区 ---------- */
.head { margin-bottom: 38px; }
.head .kicker {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 3px; text-transform: uppercase;
  color: var(--cyan); margin-bottom: 10px;
}
.head h2 { font-size: clamp(24px, 3.4vw, 34px); line-height: 1.35; letter-spacing: .4px; }
.head p { color: var(--txt-2); margin-top: 12px; max-width: 760px; font-size: 14.5px; }

/* ---------- 网格 ---------- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

/* ---------- 品类标签 ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  padding: 9px 18px; border-radius: 999px; font-size: 13px; color: var(--txt-2);
  background: var(--panel); border: 1px solid var(--line); transition: .2s;
}
.chip:hover { color: var(--cyan); border-color: rgba(34, 211, 238, .45); transform: translateY(-2px); }
.chip b { color: var(--txt); font-weight: 600; }

/* ---------- 代码块 ---------- */
.code {
  border-radius: var(--radius); overflow: hidden;
  background: #050a16; border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.code-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 11px 16px; border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .03);
}
.code-bar .dots { display: flex; gap: 6px; }
.code-bar .dots i { width: 9px; height: 9px; border-radius: 50%; display: block; }
.code-bar .dots i:nth-child(1) { background: #fb7185; }
.code-bar .dots i:nth-child(2) { background: #fbbf24; }
.code-bar .dots i:nth-child(3) { background: #34d399; }
.code-bar .fn { font-family: var(--mono); font-size: 11.5px; color: var(--txt-3); letter-spacing: .6px; }
.code pre {
  padding: 20px 22px; overflow-x: auto;
  font-size: 12.8px; line-height: 1.95; color: #c9d7ea;
}
.code .k { color: #7dd3fc; }      /* 关键字 */
.code .s { color: #86efac; }      /* 字符串 */
.code .c { color: #64748b; }      /* 注释 */
.code .n { color: #fbbf24; }      /* 数字 */
.code .f { color: #c4b5fd; }      /* 函数 */
.code .v { color: #f9a8d4; }      /* 变量 */
.copy-btn {
  margin-left: auto; font-size: 11px; padding: 5px 12px; border-radius: 8px;
  background: var(--panel-2); color: var(--txt-2); border: 1px solid var(--line-strong);
  cursor: pointer; transition: .15s; font-family: var(--font);
}
.copy-btn:hover { color: var(--cyan); border-color: rgba(34, 211, 238, .5); }
.copy-btn.done { color: var(--emerald); border-color: rgba(52, 211, 153, .5); }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--line); }
table.tbl { width: 100%; border-collapse: collapse; font-size: 13.2px; background: var(--panel); }
.tbl th {
  text-align: left; padding: 13px 18px; color: var(--txt-3); font-weight: 600;
  font-size: 12px; letter-spacing: 1.2px; text-transform: uppercase;
  border-bottom: 1px solid var(--line-strong); background: rgba(255, 255, 255, .03);
  white-space: nowrap;
}
.tbl td { padding: 13px 18px; border-bottom: 1px solid var(--line); color: var(--txt-2); vertical-align: top; }
.tbl tr:last-child td { border-bottom: none; }
.tbl tr:hover td { background: rgba(99, 102, 241, .06); color: var(--txt); }
.tbl code {
  font-size: 12px; padding: 2px 8px; border-radius: 6px;
  background: rgba(34, 211, 238, .1); color: var(--cyan);
}
.tbl .req { color: var(--rose); font-family: var(--mono); font-size: 11px; }
.tbl .opt { color: var(--txt-3); font-family: var(--mono); font-size: 11px; }

/* ---------- 文档页 ---------- */
.doc-layout { display: grid; grid-template-columns: 220px 1fr; gap: 34px; align-items: start; }
.doc-side { position: sticky; top: 86px; padding: 18px; }
.doc-side .t { font-size: 11px; letter-spacing: 2px; color: var(--txt-3); text-transform: uppercase; margin: 14px 0 8px; font-family: var(--mono); }
.doc-side a {
  display: block; padding: 8px 12px; border-radius: 9px; font-size: 13px; color: var(--txt-2);
  border-left: 2px solid transparent; transition: .15s;
}
.doc-side a:hover { color: var(--txt); background: var(--panel-2); }
.doc-side a.on { color: var(--cyan); border-left-color: var(--cyan); background: rgba(34, 211, 238, .07); }
.doc-main > section { margin-bottom: 52px; scroll-margin-top: 90px; }
.doc-main h2 {
  font-size: 22px; margin-bottom: 6px; padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.doc-main h2 .no { font-family: var(--mono); color: var(--cyan); margin-right: 10px; font-size: 15px; }
.doc-main h3 { font-size: 16px; margin: 26px 0 10px; color: var(--txt); }
.doc-main p { color: var(--txt-2); font-size: 14px; margin: 10px 0; }
.doc-main ul { margin: 10px 0 10px 22px; color: var(--txt-2); font-size: 14px; }
.doc-main li { margin: 5px 0; }
.ep {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 13px 18px; border-radius: 12px; margin: 14px 0;
  background: var(--panel); border: 1px solid var(--line);
}
.ep .m {
  font-family: var(--mono); font-size: 11px; font-weight: 700; letter-spacing: 1px;
  padding: 4px 11px; border-radius: 7px;
}
.m-get { background: rgba(52, 211, 153, .14); color: var(--emerald); }
.m-post { background: rgba(34, 211, 238, .14); color: var(--cyan); }
.ep .u { font-family: var(--mono); font-size: 13px; color: var(--txt); }
.ep .d { margin-left: auto; font-size: 12px; color: var(--txt-3); }

/* ---------- FAQ ---------- */
.faq-item { border-radius: var(--radius-sm); overflow: hidden; margin-bottom: 12px; background: var(--panel); border: 1px solid var(--line); }
.faq-q {
  display: flex; align-items: center; gap: 14px; padding: 18px 22px;
  cursor: pointer; font-size: 15px; font-weight: 600; user-select: none;
}
.faq-q .ar { margin-left: auto; color: var(--txt-3); transition: .25s; font-family: var(--mono); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a .in { padding: 0 22px 20px 56px; color: var(--txt-2); font-size: 13.8px; line-height: 1.9; }
.faq-item.open .faq-a { max-height: 320px; }
.faq-item.open .ar { transform: rotate(45deg); color: var(--cyan); }
.faq-q .qn {
  width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center;
  background: var(--grad-soft); color: var(--cyan); font-family: var(--mono); font-size: 11px;
  box-shadow: inset 0 0 0 1px rgba(99, 102, 241, .3); flex-shrink: 0;
}

/* ---------- 步骤 ---------- */
.step { display: flex; gap: 18px; padding: 22px; }
.step-n {
  width: 38px; height: 38px; border-radius: 11px; flex-shrink: 0;
  background: var(--grad); color: #061021; font-weight: 800;
  display: grid; place-items: center; font-family: var(--mono);
  box-shadow: 0 8px 22px rgba(99, 102, 241, .35);
}
.step h4 { font-size: 15px; margin-bottom: 6px; }
.step p { font-size: 13.2px; color: var(--txt-2); }

/* ---------- 流程图 ---------- */
.flow { display: flex; align-items: stretch; gap: 12px; flex-wrap: wrap; }
.flow .node {
  flex: 1; min-width: 170px; padding: 20px 18px; text-align: center;
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius-sm);
}
.flow .node b { display: block; font-size: 14px; margin-bottom: 6px; }
.flow .node span { font-size: 11.5px; color: var(--txt-3); font-family: var(--mono); letter-spacing: .8px; }
.flow .arr { display: grid; place-items: center; color: var(--cyan); font-family: var(--mono); font-size: 18px; padding: 0 2px; }
.flow .node.hl { border-color: rgba(34, 211, 238, .45); background: rgba(34, 211, 238, .07); }

/* ---------- 提示条 ---------- */
.note {
  display: flex; gap: 12px; padding: 16px 20px; border-radius: var(--radius-sm);
  font-size: 13.2px; line-height: 1.85; margin: 18px 0;
}
.note-info { background: rgba(34, 211, 238, .08); border: 1px solid rgba(34, 211, 238, .25); color: #a5f3fc; }
.note-warn { background: rgba(251, 191, 36, .08); border: 1px solid rgba(251, 191, 36, .28); color: #fde68a; }
.note-danger { background: rgba(251, 113, 133, .08); border: 1px solid rgba(251, 113, 133, .28); color: #fecdd3; }
.note .tag { font-weight: 700; white-space: nowrap; font-family: var(--mono); font-size: 11px; letter-spacing: 1px; padding-top: 2px; }

/* ---------- 协议/长文 ---------- */
.legal { max-width: 820px; }
.legal h2 { font-size: 21px; margin: 36px 0 10px; }
.legal h3 { font-size: 15.5px; margin: 22px 0 8px; color: var(--cyan); }
.legal p, .legal li { color: var(--txt-2); font-size: 13.8px; line-height: 2.05; margin: 8px 0; }
.legal ol, .legal ul { padding-left: 24px; }
.legal .meta { font-size: 12px; color: var(--txt-3); font-family: var(--mono); margin-bottom: 30px; }

/* ---------- 页脚 ---------- */
.footer {
  margin-top: 40px; border-top: 1px solid var(--line);
  background: rgba(5, 8, 16, .6); backdrop-filter: blur(12px);
}
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 30px; padding: 52px 0 36px; }
.footer h4 { font-size: 13px; letter-spacing: 1.5px; color: var(--txt); margin-bottom: 16px; text-transform: uppercase; }
.footer a { display: block; color: var(--txt-3); font-size: 13px; padding: 5px 0; transition: .15s; }
.footer a:hover { color: var(--cyan); }
.footer .desc { color: var(--txt-3); font-size: 13px; line-height: 1.95; margin-top: 14px; max-width: 320px; }
.footer-bottom {
  border-top: 1px solid var(--line); padding: 18px 0;
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  font-size: 12px; color: var(--txt-3);
}
.footer-bottom a { color: var(--txt-3); display: inline; padding: 0 4px; }
.footer-bottom a:hover { color: var(--cyan); }

/* ---------- 调试工具 ---------- */
.dbg-form { display: grid; gap: 12px; padding: 22px; }
.dbg-form label { font-size: 11px; letter-spacing: 1.5px; color: var(--txt-3); text-transform: uppercase; font-family: var(--mono); }
.dbg-form input, .dbg-form select, .dbg-form textarea {
  width: 100%; padding: 11px 14px; border-radius: 10px; font-size: 13.5px;
  background: rgba(255, 255, 255, .05); color: var(--txt);
  border: 1px solid var(--line-strong); outline: none; font-family: var(--mono);
}
.dbg-form input:focus, .dbg-form select:focus, .dbg-form textarea:focus { border-color: rgba(34, 211, 238, .55); }
.dbg-form select option { background: #0b1224; }

/* ---------- 定价卡 ---------- */
.price-card { padding: 30px 28px; position: relative; overflow: hidden; }
.price-card.feat {
  border-color: rgba(34, 211, 238, .5);
  background: linear-gradient(180deg, rgba(34, 211, 238, .1), rgba(255, 255, 255, .04) 45%);
}
.price-card .badge {
  position: absolute; top: 18px; right: -34px; transform: rotate(38deg);
  background: var(--grad); color: #061021; font-size: 10.5px; font-weight: 800;
  padding: 5px 42px; letter-spacing: 1px;
}
.price-card .tier { font-size: 13px; letter-spacing: 2.5px; color: var(--cyan); font-family: var(--mono); text-transform: uppercase; }
.price-card .amt { font-size: 38px; font-weight: 800; margin: 14px 0 4px; font-family: var(--mono); }
.price-card .amt small { font-size: 13px; color: var(--txt-3); font-weight: 500; font-family: var(--font); }
.price-card .li { list-style: none; margin: 22px 0; }
.price-card .li li {
  padding: 8px 0 8px 26px; position: relative; font-size: 13.2px; color: var(--txt-2);
  border-bottom: 1px dashed var(--line);
}
.price-card .li li::before { content: "✓"; position: absolute; left: 2px; color: var(--emerald); font-family: var(--mono); }
.price-card .li li:last-child { border-bottom: none; }

/* ---------- 动效 ---------- */
.fade-up { opacity: 0; transform: translateY(22px); transition: opacity .7s cubic-bezier(.22, 1, .36, 1), transform .7s cubic-bezier(.22, 1, .36, 1); }
.fade-up.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .doc-layout { grid-template-columns: 1fr; }
  .doc-side { position: static; display: flex; flex-wrap: wrap; gap: 6px; }
  .doc-side .t { width: 100%; margin: 8px 0 2px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-links { display: none; position: absolute; top: 62px; left: 0; right: 0; flex-direction: column; padding: 14px; background: rgba(7, 11, 20, .97); border-bottom: 1px solid var(--line); }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; margin-left: auto; }
  .nav-cta .btn-g { display: none; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .hero { padding: 60px 0 44px; }
  .footer-grid { grid-template-columns: 1fr; gap: 22px; }
  .flow .arr { transform: rotate(90deg); width: 100%; }
}