/* ============================================================================
   sub2api 接入文档 · 深黑命令风格系列 (Deep-Black Terminal)
   accent: orange #f97316 / #fb923c   ·   cmd green #4ade80
   ========================================================================== */

:root {
  --bg:        #08090c;
  --bg-2:      #0d1117;
  --panel:     #10141b;
  --panel-2:   #141a23;
  --border:    #1f2733;
  --border-2:  #2a3542;
  --text:      #c9d4e2;
  --text-dim:  #8794a5;
  --text-mut:  #5a6675;
  --accent:    #f97316;   /* orange 500 */
  --accent-2:  #fb923c;   /* orange 400 */
  --accent-dk: #ea580c;   /* orange 600 */
  --green:     #4ade80;   /* cmd output  */
  --cyan:      #38bdf8;
  --red:       #f87171;
  --yellow:    #fbbf24;
  --purple:    #c084fc;
  --mono: "JetBrains Mono", "SF Mono", "Menlo", "Cascadia Code", "Consolas", "Courier New", monospace;
  --radius: 10px;
  --glow: 0 0 0 1px rgba(249,115,22,.25), 0 8px 40px -12px rgba(249,115,22,.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--mono);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(circle at 12% -8%, rgba(249,115,22,.10), transparent 42%),
    radial-gradient(circle at 88% 6%, rgba(56,189,248,.06), transparent 40%),
    linear-gradient(rgba(255,255,255,.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.015) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 44px 44px, 44px 44px;
  background-attachment: fixed;
}

/* scanline overlay */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom, rgba(0,0,0,0) 0, rgba(0,0,0,0) 2px, rgba(0,0,0,.06) 3px);
  z-index: 9999;
  mix-blend-mode: overlay;
}

::selection { background: rgba(249,115,22,.30); color: #fff; }

.wrap { max-width: 940px; margin: 0 auto; padding: 0 22px 120px; }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 14px;
  padding: 12px 22px;
  background: rgba(8,9,12,.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.topbar .brand {
  font-weight: 700; color: var(--text);
  letter-spacing: .5px; display: flex; align-items: center; gap: 9px;
}
.topbar .brand b { color: var(--accent); }
.topbar .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--green);
  box-shadow: 0 0 8px var(--green); animation: pulse 2.4s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.35} }
.topbar nav { margin-left: auto; display: flex; gap: 4px; flex-wrap: wrap; }
.topbar nav a {
  color: var(--text-dim); text-decoration: none; font-size: 13px;
  padding: 5px 11px; border-radius: 7px; border: 1px solid transparent;
  transition: .15s;
}
.topbar nav a:hover { color: var(--accent-2); border-color: var(--border-2); background: var(--panel); }
.topbar nav a.active { color: var(--accent); border-color: rgba(249,115,22,.4); background: rgba(249,115,22,.08); }

/* ---------- hero ---------- */
.hero { padding: 60px 0 30px; }
.hero .kicker {
  color: var(--accent); font-size: 12px; letter-spacing: 3px;
  text-transform: uppercase; margin-bottom: 14px;
}
.hero h1 {
  font-size: clamp(30px, 6vw, 52px); line-height: 1.1; margin: 0 0 18px;
  font-weight: 800; letter-spacing: -1px; color: #fff;
}
.hero h1 .accent {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .cursor {
  display: inline-block; width: 14px; height: .95em; vertical-align: -2px;
  background: var(--accent); margin-left: 4px; animation: blink 1.05s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.hero p.lead { color: var(--text-dim); font-size: 16px; max-width: 640px; margin: 0; }

/* ---------- section ---------- */
section { margin: 44px 0; }
h2.sec {
  font-size: 20px; color: #fff; margin: 0 0 18px; display: flex; align-items: center; gap: 12px;
  letter-spacing: -.3px;
}
h2.sec .num {
  font-size: 13px; color: var(--bg); background: var(--accent);
  min-width: 26px; height: 26px; border-radius: 7px; display: grid; place-items: center;
  font-weight: 800; box-shadow: 0 0 16px -3px var(--accent);
}
h3 { color: var(--accent-2); font-size: 15px; margin: 26px 0 10px; letter-spacing: .2px; }
p { color: var(--text-dim); }
a { color: var(--accent-2); }
strong, b { color: var(--text); }
code.inline {
  background: var(--panel-2); border: 1px solid var(--border);
  padding: 1.5px 7px; border-radius: 5px; color: var(--accent-2);
  font-size: 13.5px; white-space: nowrap;
}

/* ---------- terminal / code block ---------- */
.term {
  background: linear-gradient(180deg, var(--bg-2), #0a0d13);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  margin: 16px 0;
  overflow: hidden;
  box-shadow: 0 20px 50px -24px rgba(0,0,0,.8);
}
.term-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.term-bar .tl { display: flex; gap: 7px; }
.term-bar .tl i { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.term-bar .tl .r { background: #ff5f56; }
.term-bar .tl .y { background: #ffbd2e; }
.term-bar .tl .g { background: #27c93f; }
.term-bar .title { color: var(--text-mut); font-size: 12px; margin-left: 6px; }
.term-bar .copy {
  margin-left: auto; cursor: pointer; user-select: none;
  color: var(--text-dim); font-size: 11.5px;
  border: 1px solid var(--border-2); background: var(--panel-2);
  padding: 3px 10px; border-radius: 6px; transition: .15s;
}
.term-bar .copy:hover { color: var(--accent); border-color: var(--accent); }
.term-bar .copy.ok { color: var(--green); border-color: var(--green); }
.term pre {
  margin: 0; padding: 16px 18px; overflow-x: auto;
  font-size: 13.5px; line-height: 1.75; color: var(--text);
  font-family: var(--mono);
}
.term pre .p  { color: var(--green); }      /* prompt $  */
.term pre .c  { color: var(--text-mut); font-style: italic; }  /* comment  */
.term pre .k  { color: var(--accent-2); }    /* keyword/cmd */
.term pre .s  { color: var(--cyan); }        /* string    */
.term pre .v  { color: var(--yellow); }      /* value/var */
.term pre .o  { color: var(--text-dim); }    /* output    */
.term pre .hl { color: var(--accent); font-weight: 700; }

/* ---------- callout ---------- */
.note {
  border-left: 3px solid var(--accent);
  background: rgba(249,115,22,.06);
  border-radius: 0 8px 8px 0;
  padding: 12px 16px; margin: 16px 0;
  color: var(--text-dim); font-size: 14px;
}
.note.warn { border-color: var(--yellow); background: rgba(251,191,36,.06); }
.note.tip  { border-color: var(--green);  background: rgba(74,222,128,.06); }
.note b { color: var(--text); }
.note .lbl { display:block; font-size:11px; letter-spacing:2px; text-transform:uppercase;
  color: var(--accent); margin-bottom: 4px; font-weight: 700; }
.note.warn .lbl { color: var(--yellow); }
.note.tip .lbl  { color: var(--green); }

/* ---------- steps ---------- */
.steps { counter-reset: step; list-style: none; padding: 0; margin: 0; }
.steps > li {
  position: relative; padding: 0 0 4px 44px; margin: 0 0 26px;
}
.steps > li::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 0; top: -2px;
  width: 30px; height: 30px; border-radius: 8px;
  background: var(--panel-2); border: 1px solid var(--accent);
  color: var(--accent); font-weight: 800; font-size: 14px;
  display: grid; place-items: center;
  box-shadow: 0 0 18px -6px var(--accent);
}
.steps > li h3 { margin-top: 2px; }

/* ---------- cards grid ---------- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px,1fr)); gap: 16px; }
.card {
  display: block; text-decoration: none;
  background: linear-gradient(180deg, var(--panel), var(--bg-2));
  border: 1px solid var(--border-2); border-radius: var(--radius);
  padding: 20px; transition: .18s; position: relative; overflow: hidden;
}
.card::after {
  content: "→"; position: absolute; right: 18px; top: 18px;
  color: var(--text-mut); transition: .18s; font-size: 18px;
}
.card:hover { border-color: var(--accent); transform: translateY(-3px); box-shadow: var(--glow); }
.card:hover::after { color: var(--accent); transform: translate(4px,-2px); }
.card .tag { font-size: 11px; letter-spacing: 2px; text-transform: uppercase; color: var(--accent); }
.card h3 { color: #fff; margin: 8px 0 6px; font-size: 17px; }
.card p { margin: 0; font-size: 13px; color: var(--text-mut); }
.card .ico { font-size: 22px; margin-bottom: 4px; }

/* ---------- ref table ---------- */
table.ref { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 13.5px; }
table.ref th, table.ref td {
  text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border);
}
table.ref th { color: var(--accent); font-weight: 700; border-bottom: 1px solid var(--border-2);
  font-size: 12px; text-transform: uppercase; letter-spacing: 1px; }
table.ref td { color: var(--text-dim); }
table.ref td code { color: var(--accent-2); }
table.ref tr:hover td { background: rgba(255,255,255,.02); }
.badge { display:inline-block; padding:1px 8px; border-radius:5px; font-size:11px; font-weight:700;
  border:1px solid var(--border-2); }
.badge.post { color: var(--green); border-color: rgba(74,222,128,.4); }
.badge.get  { color: var(--cyan);  border-color: rgba(56,189,248,.4); }

/* ---------- tabs ---------- */
.tabs { display: flex; gap: 4px; margin: 16px 0 0; border-bottom: 1px solid var(--border); }
.tabs button {
  background: none; border: none; color: var(--text-mut); cursor: pointer;
  font-family: var(--mono); font-size: 13px; padding: 8px 16px;
  border-bottom: 2px solid transparent; margin-bottom: -1px; transition: .15s;
}
.tabs button:hover { color: var(--text); }
.tabs button.active { color: var(--accent); border-bottom-color: var(--accent); }
.tabpane { display: none; }
.tabpane.active { display: block; }

/* ---------- footer / prevnext ---------- */
.prevnext { display: flex; justify-content: space-between; gap: 12px; margin-top: 50px; }
.prevnext a {
  flex: 1; text-decoration: none; padding: 14px 18px; border-radius: 8px;
  border: 1px solid var(--border-2); background: var(--panel); color: var(--text-dim);
  transition: .15s;
}
.prevnext a:hover { border-color: var(--accent); color: var(--accent-2); }
.prevnext a small { display: block; color: var(--text-mut); font-size: 11px; }
.prevnext a.next { text-align: right; }
footer.foot { text-align: center; color: var(--text-mut); font-size: 12px; margin-top: 60px;
  padding-top: 24px; border-top: 1px solid var(--border); }
footer.foot b { color: var(--accent); }

/* utility */
.kbd { background: var(--panel-2); border: 1px solid var(--border-2); border-bottom-width: 2px;
  border-radius: 5px; padding: 1px 7px; font-size: 12px; color: var(--text); }
.pill-row { display: flex; gap: 8px; flex-wrap: wrap; margin: 10px 0; }
.pill { font-size: 12px; padding: 4px 12px; border-radius: 20px;
  border: 1px solid var(--border-2); color: var(--text-dim); background: var(--panel); }
hr.sep { border: none; border-top: 1px dashed var(--border-2); margin: 40px 0; }