/* ==========================================================================
   Claude Code中转站 —— 站点样式
   主题：暖炭黑 + 陶土橙终端风 · 纯 CSS 无 JS · 移动端/桌面端自适应
   ========================================================================== */

:root {
  --bg:          #0d0b0a;
  --bg-warm:     #12100e;
  --surface:     #191512;
  --surface-2:   #211a16;
  --line:        rgba(232, 146, 95, .16);
  --line-2:      rgba(232, 146, 95, .32);
  --text:        #f4ede7;
  --sub:         #ab9c92;
  --dim:         #7c6f66;
  --brand:       #e8925f;
  --brand-deep:  #d1604a;
  --amber:       #f0b429;
  --lime:        #9ccc65;
  --rose:        #ef6f6c;
  --sky:         #6fb1d6;
  --r:           14px;
  --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: 78px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  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; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 940px; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 0; top: 0; background: var(--brand); color: #14100e; 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: 10px;
  font-size: 15px; font-weight: 600; white-space: nowrap;
  transition: transform .2s, box-shadow .2s, background .2s, border-color .2s;
}
.btn-main {
  background: linear-gradient(120deg, var(--brand), var(--brand-deep));
  color: #17110d;
  box-shadow: 0 10px 28px rgba(209, 96, 74, .32);
}
.btn-main:hover { transform: translateY(-2px); box-shadow: 0 16px 38px rgba(232, 146, 95, .38); }
.btn-line {
  background: transparent; color: var(--text);
  border: 1px solid var(--line-2);
}
.btn-line:hover { background: rgba(232, 146, 95, .1); border-color: var(--brand); }
.btn-s { padding: 9px 20px; font-size: 14px; }

/* --------------------------- 顶栏 --------------------------- */
.top {
  position: sticky; top: 0; z-index: 60;
  background: rgba(13, 11, 10, .84);
  backdrop-filter: saturate(150%) blur(14px);
  -webkit-backdrop-filter: saturate(150%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.top-in { display: flex; align-items: center; justify-content: space-between; gap: 20px; height: 70px; }
.brand img { height: 36px; display: block; }
.nav {
  display: flex; gap: 24px; font-size: 14.5px; color: var(--sub);
  white-space: nowrap; overflow-x: auto; scrollbar-width: none;
}
.nav::-webkit-scrollbar { display: none; }
.nav a { padding: 4px 0; border-bottom: 2px solid transparent; transition: color .2s, border-color .2s; }
.nav a:hover { color: var(--brand); border-bottom-color: var(--brand); }

/* --------------------------- Hero --------------------------- */
.hero {
  position: relative;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(820px 480px at 78% -8%, rgba(209, 96, 74, .22), transparent 62%),
    radial-gradient(620px 420px at 5% 100%, rgba(240, 180, 41, .08), transparent 60%),
    var(--bg-warm);
}
.hero-in {
  display: grid; grid-template-columns: 1.02fr .98fr;
  gap: 52px; align-items: center; padding: 78px 24px 84px;
}
.pill {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--mono); font-size: 12.5px; letter-spacing: .04em;
  color: var(--brand);
  border: 1px solid var(--line-2); border-radius: 999px;
  padding: 6px 16px; margin-bottom: 24px;
}
.pill i {
  width: 7px; height: 7px; border-radius: 50%; background: var(--lime);
  box-shadow: 0 0 0 4px rgba(156, 204, 101, .16);
}
.hero h1 {
  font-size: clamp(31px, 4.5vw, 54px);
  line-height: 1.2; font-weight: 800; letter-spacing: -.02em;
}
.hero h1 .mono {
  display: inline-block; margin-top: 12px;
  font-family: var(--mono); font-weight: 700;
  font-size: clamp(15px, 1.62vw, 23px); line-height: 1.4; letter-spacing: .01em;
  background: linear-gradient(100deg, var(--brand), var(--amber));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-p { margin-top: 22px; font-size: 17px; color: var(--sub); max-width: 600px; }
.hero-p b { color: var(--text); }
/* 支持模型条 */
.models {
  list-style: none; display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  margin-top: 24px;
}
.models li.lbl {
  font-size: 12.5px; color: var(--dim); margin-right: 2px;
  padding: 0; background: none; border: none;
}
.models li {
  padding: 6px 12px;
  background: rgba(232, 146, 95, .07);
  border: 1px solid var(--line);
  border-radius: 7px;
  white-space: nowrap;
}
.models code { font-size: 12.5px; color: var(--brand); font-weight: 600; }

.hero-btns { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 30px; }
.hero-tip { margin-top: 18px; font-size: 13.5px; color: var(--dim); font-family: var(--mono); }

/* 终端窗口 */
.term {
  background: #0a0807;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  box-shadow: 0 30px 70px rgba(0, 0, 0, .6);
  overflow: hidden;
}
.term-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 11px 15px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--line);
}
.term-bar u { width: 11px; height: 11px; border-radius: 50%; display: block; background: #3a2f28; text-decoration: none; }
.term-bar u:nth-child(1) { background: #ef6f6c; }
.term-bar u:nth-child(2) { background: #f0b429; }
.term-bar u:nth-child(3) { background: #9ccc65; }
.term-bar span { margin-left: 8px; font-family: var(--mono); font-size: 12.5px; color: var(--dim); }
.term pre {
  margin: 0; padding: 20px; overflow-x: auto;
  font-family: var(--mono); font-size: 13.2px; line-height: 1.85; color: #d8cec6;
}
.t-c { color: #6b5d54; }               /* 注释 */
.t-p { color: var(--brand); }          /* 提示符/关键字 */
.t-s { color: var(--lime); }           /* 字符串 */
.t-w { color: var(--amber); }          /* 强调 */
.t-e { color: var(--rose); }           /* 报错 */
.t-i { color: var(--sky); }            /* 信息 */

/* 指标条 */
.metrics {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: var(--line);
  border-top: 1px solid var(--line);
}
.metrics > div { background: var(--bg-warm); padding: 26px 22px; text-align: center; }
.metrics dt {
  font-family: var(--mono); font-size: clamp(21px, 2.6vw, 28px); font-weight: 700;
  color: var(--brand); letter-spacing: -.02em;
}
.metrics dd { font-size: 13px; color: var(--sub); margin-top: 4px; }

/* --------------------------- 区块通用 --------------------------- */
.sec { padding: 90px 0; }
.sec-warm { background: var(--bg-warm); border-block: 1px solid var(--line); }
.head { max-width: 800px; margin-bottom: 46px; }
.head.mid { margin-inline: auto; text-align: center; }
.kicker {
  display: inline-block; font-family: var(--mono);
  font-size: 12.5px; letter-spacing: .16em; text-transform: uppercase;
  color: var(--brand); margin-bottom: 12px;
}
.kicker::before { content: "// "; opacity: .55; }
.sec h2 { font-size: clamp(25px, 3.1vw, 37px); line-height: 1.32; font-weight: 800; letter-spacing: -.02em; }
.head p { margin-top: 15px; font-size: 16.5px; color: var(--sub); }
.head p b { color: var(--text); }
.txt { font-size: 16px; color: var(--sub); max-width: 880px; }
.txt p + p { margin-top: 14px; }
.txt b { color: var(--text); }
.em { color: var(--brand); font-weight: 600; }

/* --------------------------- 双栏对照 --------------------------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.pane {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r); padding: 28px 26px;
}
.pane > h3 {
  font-size: 17px; font-weight: 700; margin-bottom: 8px;
  display: flex; align-items: center; gap: 9px;
}
.pane > h3 .mk { font-family: var(--mono); font-size: 13px; padding: 2px 9px; border-radius: 6px; }
.mk-no { background: rgba(239, 111, 108, .14); color: var(--rose); }
.mk-yes { background: rgba(156, 204, 101, .14); color: var(--lime); }
.pane ul { list-style: none; margin-top: 12px; display: flex; flex-direction: column; gap: 10px; }
.pane li { font-size: 14.5px; color: var(--sub); padding-left: 22px; position: relative; }
.pane li::before { position: absolute; left: 0; top: 0; font-family: var(--mono); }
.pane.bad li::before { content: "×"; color: var(--rose); }
.pane.good li::before { content: "✓"; color: var(--lime); }

/* --------------------------- 卡片 --------------------------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.cards.two { grid-template-columns: repeat(2, 1fr); }
.cd {
  background: linear-gradient(160deg, rgba(232, 146, 95, .07), transparent 52%), var(--surface);
  border: 1px solid var(--line); border-radius: var(--r);
  padding: 26px 24px;
  transition: transform .22s, border-color .22s, box-shadow .22s;
}
.cd:hover { transform: translateY(-4px); border-color: var(--line-2); box-shadow: 0 18px 42px rgba(0, 0, 0, .45); }
.cd .ic {
  width: 42px; height: 42px; display: grid; place-items: center;
  border-radius: 10px; font-size: 19px; margin-bottom: 16px;
  background: rgba(232, 146, 95, .12); border: 1px solid var(--line);
}
.cd h3 { font-size: 16.5px; font-weight: 700; }
.cd p { margin-top: 8px; font-size: 14.5px; color: var(--sub); }

/* --------------------------- 表格 --------------------------- */
.tbl {
  overflow-x: auto; -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line); border-radius: var(--r);
  background: var(--surface);
}
.tbl + .tbl { margin-top: 22px; }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; min-width: 660px; }
caption {
  caption-side: top; text-align: left; padding: 16px 20px 2px;
  font-size: 13.5px; color: var(--dim);
}
th, td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th {
  background: rgba(232, 146, 95, .09); color: var(--brand);
  font-weight: 700; white-space: nowrap;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: rgba(232, 146, 95, .035); }
td b { color: var(--text); }
td code { color: var(--brand); background: rgba(232, 146, 95, .08); padding: 1px 6px; border-radius: 5px; }
.chip {
  display: inline-block; padding: 2px 10px; border-radius: 999px;
  font-size: 12.5px; font-weight: 600; white-space: nowrap;
}
.c-ok { background: rgba(156, 204, 101, .14); color: var(--lime); }
.c-mid { background: rgba(240, 180, 41, .14); color: var(--amber); }
.c-no { background: rgba(239, 111, 108, .14); color: var(--rose); }
.c-in { background: rgba(111, 177, 214, .14); color: var(--sky); }
.tip { margin-top: 18px; font-size: 14px; color: var(--dim); max-width: 880px; }
.tip b { color: var(--sub); }

/* --------------------------- 时间线（接入步骤） --------------------------- */
.line { position: relative; padding-left: 34px; }
.line::before {
  content: ""; position: absolute; left: 9px; top: 6px; bottom: 6px;
  width: 2px; background: linear-gradient(180deg, var(--brand), rgba(232, 146, 95, .06));
}
.node { position: relative; padding-bottom: 34px; }
.node:last-child { padding-bottom: 0; }
.node::before {
  content: ""; position: absolute; left: -30px; top: 8px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--bg-warm); border: 2px solid var(--brand);
}
.node > h3 { font-size: 18px; font-weight: 700; }
.node > h3 em {
  font-style: normal; font-family: var(--mono); font-size: 12.5px;
  color: var(--brand); margin-right: 10px; letter-spacing: .08em;
}
.node > p { margin-top: 7px; font-size: 15px; color: var(--sub); }
.node .term { margin-top: 15px; }

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

/* --------------------------- 尾部 CTA --------------------------- */
.cta {
  text-align: center;
  background: radial-gradient(720px 340px at 50% 0%, rgba(209, 96, 74, .22), transparent 68%), var(--bg-warm);
  border-top: 1px solid var(--line);
}
.cta h2 { font-size: clamp(25px, 3.3vw, 38px); font-weight: 800; letter-spacing: -.02em; }
.cta p { margin-top: 17px; color: var(--sub); font-size: 16.5px; }
.cta .hero-btns { justify-content: center; }

/* --------------------------- 页脚 --------------------------- */
.foot { background: #080706; border-top: 1px solid var(--line); padding: 54px 0 32px; }
.foot-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 34px; }
.foot-brand img { height: 34px; margin-bottom: 14px; }
.foot-brand p { font-size: 13.5px; color: var(--dim); max-width: 320px; }
.foot-col h3 { font-size: 13.5px; font-weight: 700; color: var(--text); margin-bottom: 13px; }
.foot-col ul { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.foot-col a { font-size: 13.5px; color: var(--dim); transition: color .2s; }
.foot-col a:hover { color: var(--brand); }
.foot-end {
  margin-top: 38px; padding-top: 22px; border-top: 1px solid var(--line);
  font-size: 12.5px; color: var(--dim); display: flex; flex-direction: column; gap: 8px;
}

/* --------------------------- 响应式 --------------------------- */
@media (max-width: 1060px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
}
@media (max-width: 900px) {
  .hero-in { grid-template-columns: 1fr; gap: 38px; padding: 56px 24px 62px; }
  .hero-p { max-width: none; }
  .split { grid-template-columns: 1fr; }
  .cards.two { grid-template-columns: 1fr; }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .metrics > div { padding: 22px 16px; }
  .nav { display: none; }
}
@media (max-width: 620px) {
  body { font-size: 15.5px; }
  .wrap { padding: 0 18px; }
  .sec { padding: 60px 0; }
  .head { margin-bottom: 32px; }
  .top-in { height: 62px; }
  .brand img { height: 31px; }
  .hero-in { padding: 44px 18px 50px; }
  .hero-btns { gap: 10px; }
  .hero-btns .btn { flex: 1 1 100%; }
  .cards { grid-template-columns: 1fr; }
  .cd, .pane { padding: 22px 20px; }
  .metrics > div { padding: 20px 12px; }
  .term pre { font-size: 12.2px; padding: 16px; }
  .q { padding: 2px 18px; }
  .q summary { font-size: 15.5px; }
  .line { padding-left: 26px; }
  .node::before { left: -23px; }
  .foot-grid { grid-template-columns: 1fr; gap: 26px; }
}

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