/* ==========================================================================
   Codex中转站 —— 站点样式
   主题：石墨黑 + 翡翠绿 · 纯 CSS 无 JS · 移动端/桌面端自适应
   ========================================================================== */

:root {
  --bg:        #080b0a;
  --bg-2:      #0c1211;
  --panel:     #111a18;
  --panel-2:   #16211e;
  --edge:      rgba(52, 211, 153, .14);
  --edge-2:    rgba(52, 211, 153, .30);
  --fg:        #e6f2ee;
  --fg-2:      #93a8a1;
  --fg-3:      #66807a;
  --green:     #34d399;
  --green-2:   #0d9488;
  --lime:      #a3e635;
  --amber:     #fbbf24;
  --red:       #f87171;
  --blue:      #60a5fa;
  --violet:    #c084fc;
  --r:         12px;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "JetBrains Mono", Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 76px; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--fg);
  font-size: 16px;
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; }
code { font-family: var(--mono); font-size: .92em; }

.box { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.box-sm { max-width: 900px; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 0; top: 0; background: var(--green); color: #06100d; padding: 10px 18px; z-index: 999; }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 28px; border-radius: 9px;
  font-size: 15px; font-weight: 600; white-space: nowrap;
  transition: transform .2s, box-shadow .2s, background .2s, border-color .2s;
}
.btn-go {
  background: linear-gradient(120deg, var(--green), var(--green-2));
  color: #04100c;
  box-shadow: 0 10px 26px rgba(13, 148, 136, .3);
}
.btn-go:hover { transform: translateY(-2px); box-shadow: 0 16px 36px rgba(52, 211, 153, .34); }
.btn-out {
  background: transparent; color: var(--fg);
  border: 1px solid var(--edge-2);
}
.btn-out:hover { background: rgba(52, 211, 153, .09); border-color: var(--green); }
.btn-xs { padding: 9px 20px; font-size: 14px; }

/* ---------------- 顶栏 ---------------- */
.bar {
  position: sticky; top: 0; z-index: 60;
  background: rgba(8, 11, 10, .85);
  backdrop-filter: saturate(150%) blur(14px);
  -webkit-backdrop-filter: saturate(150%) blur(14px);
  border-bottom: 1px solid var(--edge);
}
.bar-in { display: flex; align-items: center; justify-content: space-between; gap: 20px; height: 68px; }
.mark img { height: 36px; display: block; }
.menu {
  display: flex; gap: 24px; font-size: 14.5px; color: var(--fg-2);
  white-space: nowrap; overflow-x: auto; scrollbar-width: none;
}
.menu::-webkit-scrollbar { display: none; }
.menu a { padding: 4px 0; border-bottom: 2px solid transparent; transition: color .2s, border-color .2s; }
.menu a:hover { color: var(--green); border-bottom-color: var(--green); }

/* ---------------- Hero ---------------- */
.hero {
  position: relative; overflow: hidden;
  border-bottom: 1px solid var(--edge);
  background:
    radial-gradient(880px 500px at 80% -10%, rgba(13, 148, 136, .26), transparent 62%),
    radial-gradient(560px 400px at 2% 105%, rgba(163, 230, 53, .07), transparent 60%),
    var(--bg-2);
}
.hero-grid {
  display: grid; grid-template-columns: 1fr 1.02fr;
  gap: 50px; align-items: center; padding: 76px 24px 80px;
}
.tagline {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--mono); font-size: 12.5px; letter-spacing: .04em;
  color: var(--green);
  border: 1px solid var(--edge-2); border-radius: 999px;
  padding: 6px 16px; margin-bottom: 24px;
}
.tagline i { width: 7px; height: 7px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 0 4px rgba(163, 230, 53, .15); }
.hero h1 { font-size: clamp(31px, 4.5vw, 54px); line-height: 1.2; font-weight: 800; letter-spacing: -.02em; }
.hero h1 .sub {
  display: inline-block; margin-top: 12px;
  font-family: var(--mono); font-weight: 700;
  font-size: clamp(15px, 1.6vw, 23px); line-height: 1.4;
  background: linear-gradient(100deg, var(--green), var(--lime));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-lead { margin-top: 21px; font-size: 17px; color: var(--fg-2); }
.hero-lead b { color: var(--fg); }

.chips { list-style: none; display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 24px; }
.chips li.tag { font-size: 12.5px; color: var(--fg-3); padding: 0; background: none; border: none; margin-right: 2px; }
.chips li {
  padding: 6px 12px; border-radius: 7px; white-space: nowrap;
  background: rgba(52, 211, 153, .07); border: 1px solid var(--edge);
}
.chips code { font-size: 12.5px; color: var(--green); font-weight: 600; }

.acts { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 30px; }
.foot-note { margin-top: 18px; font-size: 13.5px; color: var(--fg-3); font-family: var(--mono); }

/* 代码编辑器窗口（带行号） */
.editor {
  background: #05100d;
  border: 1px solid var(--edge-2);
  border-radius: var(--r);
  box-shadow: 0 30px 70px rgba(0, 0, 0, .62);
  overflow: hidden;
}
.editor-top {
  display: flex; align-items: center; gap: 8px;
  padding: 11px 15px; background: var(--panel-2);
  border-bottom: 1px solid var(--edge);
}
.editor-top u { width: 11px; height: 11px; border-radius: 50%; display: block; text-decoration: none; background: #26332f; }
.editor-top u:nth-child(1) { background: #f87171; }
.editor-top u:nth-child(2) { background: #fbbf24; }
.editor-top u:nth-child(3) { background: #34d399; }
.editor-top span { margin-left: 8px; font-family: var(--mono); font-size: 12.5px; color: var(--fg-3); }
.editor pre {
  margin: 0; padding: 18px 20px; overflow-x: auto;
  font-family: var(--mono); font-size: 13.2px; line-height: 1.9; color: #cbdbd5;
  counter-reset: ln;
}
.editor pre .l {
  display: block; padding-left: 34px; position: relative;
  min-height: 1.9em;   /* 防止空行高度塌陷导致行号跳号 */
}
.editor pre .l::before {
  counter-increment: ln; content: counter(ln);
  position: absolute; left: 0; width: 22px;
  text-align: right; color: #2f4640; font-size: 12px;
}
.k-c { color: #55706a; }   /* 注释 */
.k-k { color: var(--green); } /* 键 */
.k-s { color: var(--lime); }  /* 字符串 */
.k-t { color: var(--blue); }  /* 段名/类型 */
.k-w { color: var(--amber); } /* 强调 */
.k-e { color: var(--red); }   /* 报错 */
.k-v { color: var(--violet); }/* 数值 */

/* 规格条 */
.specs {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: var(--edge); border-top: 1px solid var(--edge);
}
.specs > div { background: var(--bg-2); padding: 26px 20px; text-align: center; }
.specs dt {
  font-family: var(--mono); font-size: clamp(19px, 2.4vw, 26px); font-weight: 700;
  color: var(--green); letter-spacing: -.02em;
}
.specs dd { font-size: 13px; color: var(--fg-2); margin-top: 4px; }

/* ---------------- 区块 ---------------- */
.sec { padding: 88px 0; }
.sec-alt { background: var(--bg-2); border-block: 1px solid var(--edge); }
.hd { max-width: 800px; margin-bottom: 44px; }
.hd.mid { margin-inline: auto; text-align: center; }
.eyebrow {
  display: inline-block; font-family: var(--mono);
  font-size: 12.5px; letter-spacing: .16em; text-transform: uppercase;
  color: var(--green); margin-bottom: 12px;
}
.eyebrow::before { content: "$ "; opacity: .5; }
.sec h2 { font-size: clamp(25px, 3.1vw, 37px); line-height: 1.32; font-weight: 800; letter-spacing: -.02em; }
.hd p { margin-top: 15px; font-size: 16.5px; color: var(--fg-2); }
.hd p b { color: var(--fg); }
.body-txt { font-size: 16px; color: var(--fg-2); max-width: 880px; }
.body-txt p + p { margin-top: 14px; }
.body-txt b { color: var(--fg); }
.mk { color: var(--green); font-weight: 600; }

/* ---------------- 特性行（左右交替） ---------------- */
.rows { display: flex; flex-direction: column; gap: 18px; }
.row {
  display: grid; grid-template-columns: 46px 1fr;
  gap: 20px; align-items: start;
  background: var(--panel); border: 1px solid var(--edge);
  border-radius: var(--r); padding: 24px 26px;
  transition: border-color .22s, transform .22s;
}
.row:hover { border-color: var(--edge-2); transform: translateX(3px); }
.row .n {
  width: 46px; height: 46px; display: grid; place-items: center;
  border-radius: 10px; font-family: var(--mono); font-size: 15px; font-weight: 700;
  color: var(--green); background: rgba(52, 211, 153, .1); border: 1px solid var(--edge);
}
.row h3 { font-size: 17px; font-weight: 700; }
.row p { margin-top: 6px; font-size: 14.5px; color: var(--fg-2); }

/* ---------------- 卡片 ---------------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: linear-gradient(160deg, rgba(52, 211, 153, .06), transparent 52%), var(--panel);
  border: 1px solid var(--edge); border-radius: var(--r);
  padding: 25px 23px;
  transition: transform .22s, border-color .22s, box-shadow .22s;
}
.card:hover { transform: translateY(-4px); border-color: var(--edge-2); box-shadow: 0 18px 40px rgba(0, 0, 0, .5); }
.card .i {
  width: 42px; height: 42px; display: grid; place-items: center;
  border-radius: 10px; font-size: 19px; margin-bottom: 15px;
  background: rgba(52, 211, 153, .1); border: 1px solid var(--edge);
}
.card h3 { font-size: 16.5px; font-weight: 700; }
.card p { margin-top: 8px; font-size: 14.5px; color: var(--fg-2); }

/* ---------------- 表格 ---------------- */
.tw {
  overflow-x: auto; -webkit-overflow-scrolling: touch;
  border: 1px solid var(--edge); border-radius: var(--r); background: var(--panel);
}
.tw + .tw { margin-top: 20px; }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; min-width: 640px; }
caption { caption-side: top; text-align: left; padding: 16px 20px 2px; font-size: 13.5px; color: var(--fg-3); }
th, td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--edge); vertical-align: top; }
thead th { background: rgba(52, 211, 153, .08); color: var(--green); font-weight: 700; white-space: nowrap; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: rgba(52, 211, 153, .03); }
td b { color: var(--fg); }
td code { color: var(--green); background: rgba(52, 211, 153, .08); padding: 1px 6px; border-radius: 5px; }
.pill { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12.5px; font-weight: 600; white-space: nowrap; }
.p-ok  { background: rgba(52, 211, 153, .14); color: var(--green); }
.p-mid { background: rgba(251, 191, 36, .14); color: var(--amber); }
.p-no  { background: rgba(248, 113, 113, .14); color: var(--red); }
.p-in  { background: rgba(96, 165, 250, .14); color: var(--blue); }
.foot-tip { margin-top: 18px; font-size: 14px; color: var(--fg-3); max-width: 880px; }
.foot-tip b { color: var(--fg-2); }

/* ---------------- 接入步骤（编号块） ---------------- */
.steps { display: flex; flex-direction: column; gap: 26px; }
.step {
  border: 1px solid var(--edge); border-radius: var(--r);
  background: var(--panel); overflow: hidden;
}
.step-hd {
  display: flex; align-items: baseline; gap: 12px;
  padding: 20px 24px 0;
}
.step-hd em {
  font-style: normal; font-family: var(--mono); font-size: 12.5px;
  color: var(--green); letter-spacing: .1em;
}
.step-hd h3 { font-size: 17.5px; font-weight: 700; }
.step > p { padding: 6px 24px 18px; font-size: 14.5px; color: var(--fg-2); }
.step .editor { border-radius: 0; border-left: 0; border-right: 0; border-bottom: 0; box-shadow: none; }

/* ---------------- 双栏 ---------------- */
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.side {
  background: var(--panel); border: 1px solid var(--edge);
  border-radius: var(--r); padding: 25px 24px;
}
.side h3 { font-size: 16.5px; font-weight: 700; margin-bottom: 13px; display: flex; align-items: center; gap: 9px; }
.side h3 .b { font-family: var(--mono); font-size: 12.5px; padding: 2px 9px; border-radius: 6px; }
.b-no { background: rgba(248, 113, 113, .14); color: var(--red); }
.b-ok { background: rgba(52, 211, 153, .14); color: var(--green); }
.side ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.side li { font-size: 14.5px; color: var(--fg-2); padding-left: 22px; position: relative; }
.side li::before { position: absolute; left: 0; top: 0; font-family: var(--mono); }
.side.neg li::before { content: "×"; color: var(--red); }
.side.pos li::before { content: "✓"; color: var(--green); }

/* ---------------- FAQ ---------------- */
.qa { display: flex; flex-direction: column; gap: 12px; max-width: 940px; }
.item { background: var(--panel); border: 1px solid var(--edge); border-radius: 11px; padding: 2px 22px; }
.item[open] { border-color: var(--edge-2); }
.item summary {
  cursor: pointer; list-style: none; position: relative;
  font-size: 16px; font-weight: 700; padding: 17px 36px 17px 0;
}
.item summary::-webkit-details-marker { display: none; }
.item summary::after {
  content: "+"; position: absolute; right: 2px; top: 50%;
  transform: translateY(-50%); font-family: var(--mono);
  font-size: 21px; color: var(--green); line-height: 1;
}
.item[open] summary::after { content: "−"; }
.item .ans { padding: 0 0 20px; font-size: 15px; color: var(--fg-2); }
.item .ans p + p { margin-top: 10px; }
.item .ans b { color: var(--fg); }

/* ---------------- 尾部 CTA ---------------- */
.end {
  text-align: center;
  background: radial-gradient(720px 340px at 50% 0%, rgba(13, 148, 136, .24), transparent 68%), var(--bg-2);
  border-top: 1px solid var(--edge);
}
.end h2 { font-size: clamp(25px, 3.3vw, 38px); font-weight: 800; letter-spacing: -.02em; }
.end p { margin-top: 17px; color: var(--fg-2); font-size: 16.5px; }
.end .acts { justify-content: center; }

/* ---------------- 页脚 ---------------- */
.ft { background: #060909; border-top: 1px solid var(--edge); padding: 52px 0 30px; }
.ft-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 34px; }
.ft-brand img { height: 34px; margin-bottom: 13px; }
.ft-brand p { font-size: 13.5px; color: var(--fg-3); max-width: 320px; }
.ft-col h3 { font-size: 13.5px; font-weight: 700; color: var(--fg); margin-bottom: 13px; }
.ft-col ul { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.ft-col a { font-size: 13.5px; color: var(--fg-3); transition: color .2s; }
.ft-col a:hover { color: var(--green); }
.ft-end {
  margin-top: 36px; padding-top: 22px; border-top: 1px solid var(--edge);
  font-size: 12.5px; color: var(--fg-3); display: flex; flex-direction: column; gap: 8px;
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1060px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .ft-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; padding: 54px 24px 60px; }
  .duo { grid-template-columns: 1fr; }
  .specs { grid-template-columns: repeat(2, 1fr); }
  .specs > div { padding: 22px 14px; }
  .menu { display: none; }
}
@media (max-width: 620px) {
  body { font-size: 15.5px; }
  .box { padding: 0 18px; }
  .sec { padding: 58px 0; }
  .hd { margin-bottom: 32px; }
  .bar-in { height: 60px; }
  .mark img { height: 30px; }
  .hero-grid { padding: 42px 18px 48px; }
  .acts { gap: 10px; }
  .acts .btn { flex: 1 1 100%; }
  .cards { grid-template-columns: 1fr; }
  .card, .side, .row { padding: 20px 18px; }
  .row { grid-template-columns: 38px 1fr; gap: 14px; }
  .row .n { width: 38px; height: 38px; font-size: 13px; }
  .specs > div { padding: 18px 10px; }
  .editor pre { font-size: 12.2px; padding: 15px 16px; }
  .step-hd { padding: 17px 18px 0; }
  .step > p { padding: 6px 18px 15px; }
  .item { padding: 2px 18px; }
  .item summary { font-size: 15.5px; }
  .ft-grid { grid-template-columns: 1fr; gap: 26px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}