/* ==========================================================================
   星瀚数据商城 —— 深色交易终端风
   设计取向: 把商品目录当"行情屏"来做。等宽数字、发丝线、琥珀主调、密集表格。
   不用任何 CDN 字体(国内加载不稳), 字符个性靠字号/字距/大小写与配色做出来。
   ========================================================================== */

:root {
  --bg:        #0b0d0f;
  --bg-2:      #101317;
  --panel:     #14181d;
  --panel-2:   #1a1f25;
  --line:      #222831;
  --line-2:    #2d353f;
  --tx:        #e8ebef;
  --tx-2:      #9aa4b1;
  --tx-3:      #66707d;
  --amber:     #f5a524;
  --amber-dim: #6b4a12;
  --up:        #e5484d;   /* 国内习惯: 红涨 */
  --down:      #30a46c;   /* 绿跌 */
  --cyan:      #2dd4bf;
  --radius:    3px;
  --mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", "JetBrains Mono",
          "DejaVu Sans Mono", Consolas, monospace;
  --sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei",
          "Source Han Sans SC", "Noto Sans CJK SC", -apple-system, sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--tx);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.65;
  /* 极淡的斜向纹理 + 顶部光晕, 避免大片死黑 */
  background-image:
    radial-gradient(900px 380px at 50% -160px, rgba(245,165,36,.07), transparent 70%),
    repeating-linear-gradient(135deg, rgba(255,255,255,.012) 0 1px, transparent 1px 5px);
  min-height: 100vh;
}

a { color: var(--amber); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

.mono, .num { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* ------------------------------------------------------------------ 布局 */
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 22px; }
.narrow { max-width: 620px; }
.mid { max-width: 860px; }

/* ------------------------------------------------------------------ 顶栏 */
header.top {
  position: sticky; top: 0; z-index: 40;
  background: rgba(11,13,15,.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.top .wrap { display: flex; align-items: center; gap: 26px; height: 56px; }
.brand {
  display: flex; align-items: baseline; gap: 9px;
  color: var(--tx); font-weight: 700; font-size: 15px; letter-spacing: .02em;
}
.brand:hover { text-decoration: none; }
.brand .mark {
  font-family: var(--mono); font-size: 11px; letter-spacing: .18em;
  color: var(--amber); border: 1px solid var(--amber-dim);
  padding: 2px 6px; border-radius: var(--radius); text-transform: uppercase;
}
nav.main { display: flex; gap: 20px; margin-left: auto; align-items: center; }
nav.main a {
  color: var(--tx-2); font-size: 13px; padding: 4px 0;
  border-bottom: 1px solid transparent;
}
nav.main a:hover { color: var(--tx); border-bottom-color: var(--amber); text-decoration: none; }
nav.main a.cta {
  color: var(--bg); background: var(--amber); padding: 6px 14px;
  border-radius: var(--radius); font-weight: 600; border-bottom: 0;
}
nav.main a.cta:hover { background: #ffb838; }

/* ---------------------------------------------------------- 行情条(ticker) */
.ticker {
  border-bottom: 1px solid var(--line);
  background: var(--bg-2);
  overflow: hidden; white-space: nowrap;
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .06em;
  color: var(--tx-3);
}
.ticker .run { display: inline-block; padding: 7px 0; animation: slide 46s linear infinite; }
.ticker b { color: var(--amber); font-weight: 500; }
.ticker span { padding: 0 26px; border-right: 1px solid var(--line); }
@keyframes slide { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .ticker .run { animation: none; } }

/* ------------------------------------------------------------------ 首屏 */
.hero { padding: 74px 0 56px; border-bottom: 1px solid var(--line); }
.hero .kicker {
  font-family: var(--mono); font-size: 11px; letter-spacing: .26em;
  text-transform: uppercase; color: var(--amber); margin-bottom: 20px;
}
.hero h1 {
  margin: 0 0 20px; font-size: clamp(30px, 5.2vw, 52px); line-height: 1.12;
  font-weight: 800; letter-spacing: -.02em; max-width: 20em;
}
.hero h1 em {
  font-style: normal; color: var(--amber);
  /* 用下划线代替色块, 更克制 */
  box-shadow: inset 0 -.14em 0 var(--amber-dim);
}
.hero p.lead { font-size: 16px; color: var(--tx-2); max-width: 44em; margin: 0 0 30px; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* 交错入场 */
.fade { opacity: 0; animation: rise .6s cubic-bezier(.22,.7,.3,1) forwards; }
.fade:nth-child(1) { animation-delay: .04s; }
.fade:nth-child(2) { animation-delay: .11s; }
.fade:nth-child(3) { animation-delay: .18s; }
.fade:nth-child(4) { animation-delay: .25s; }
.fade:nth-child(5) { animation-delay: .32s; }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .fade { opacity: 1; animation: none; } }

/* ------------------------------------------------------------------ 按钮 */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px; border-radius: var(--radius); border: 1px solid var(--line-2);
  background: var(--panel); color: var(--tx); font-size: 14px; font-weight: 500;
  cursor: pointer; font-family: inherit; transition: border-color .15s, background .15s;
}
.btn:hover { border-color: var(--tx-3); text-decoration: none; background: var(--panel-2); }
.btn.primary { background: var(--amber); color: #241a05; border-color: var(--amber); font-weight: 700; }
.btn.primary:hover { background: #ffb838; border-color: #ffb838; }
.btn.ghost { background: transparent; }
.btn.sm { padding: 5px 11px; font-size: 12.5px; }
.btn.danger { color: var(--up); border-color: #4d2426; }
.btn.danger:hover { background: #2a1516; border-color: var(--up); }
.btn:disabled { opacity: .45; cursor: not-allowed; }

/* ------------------------------------------------------------------ 区块 */
section.band { padding: 54px 0; border-bottom: 1px solid var(--line); }
.eyebrow {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .24em;
  text-transform: uppercase; color: var(--tx-3); margin-bottom: 14px;
}
h2.sec { margin: 0 0 8px; font-size: 24px; font-weight: 700; letter-spacing: -.01em; }
h3 { font-size: 16px; margin: 26px 0 10px; font-weight: 700; }
p { margin: 0 0 12px; }

/* 统计格 */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(148px, 1fr)); gap: 1px;
         background: var(--line); border: 1px solid var(--line); border-radius: var(--radius);
         overflow: hidden; }
.stats .cell { background: var(--panel); padding: 18px 16px; }
.stats .v { font-family: var(--mono); font-size: 25px; font-weight: 600;
            color: var(--amber); letter-spacing: -.02em; line-height: 1.2; }
.stats .k { font-size: 12px; color: var(--tx-3); margin-top: 4px; }

/* 卡片 */
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
        padding: 20px; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 14px; }
.grid3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px; }

/* ------------------------------------------------------------------ 表格 */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th {
  text-align: left; font-weight: 500; font-size: 11px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--tx-3); font-family: var(--mono);
  padding: 9px 12px; border-bottom: 1px solid var(--line-2); white-space: nowrap;
}
td { padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: middle; }
tbody tr:hover td { background: var(--panel-2); }
td.num, th.num { text-align: right; font-family: var(--mono); font-variant-numeric: tabular-nums; }
.tbl-wrap { border: 1px solid var(--line); border-radius: var(--radius);
            background: var(--panel); overflow-x: auto; }
table.tight td, table.tight th { padding: 7px 10px; font-size: 12.5px; }

/* 目录行: 品种代码做成"标签" */
.code-chip {
  display: inline-block; min-width: 34px; text-align: center;
  font-family: var(--mono); font-size: 11px; font-weight: 600; letter-spacing: .04em;
  color: var(--amber); background: rgba(245,165,36,.08);
  border: 1px solid var(--amber-dim); border-radius: 2px; padding: 1px 5px;
}
/* 体积条: 让目录一眼看出数据量级 */
.bar { height: 4px; background: var(--line-2); border-radius: 2px; overflow: hidden;
       min-width: 46px; }
.bar > i { display: block; height: 100%; background: linear-gradient(90deg, var(--amber-dim), var(--amber)); }

/* ------------------------------------------------------------------ 徽标 */
.pill {
  display: inline-block; font-family: var(--mono); font-size: 10.5px;
  letter-spacing: .08em; text-transform: uppercase; padding: 2px 7px;
  border-radius: 2px; border: 1px solid var(--line-2); color: var(--tx-2);
  white-space: nowrap;
}
.pill.ok      { color: var(--down); border-color: #1d4433; background: rgba(48,163,108,.08); }
.pill.warn    { color: var(--amber); border-color: var(--amber-dim); background: rgba(245,165,36,.08); }
.pill.bad     { color: var(--up); border-color: #4d2426; background: rgba(229,72,77,.08); }
.pill.info    { color: var(--cyan); border-color: #16504a; background: rgba(45,212,191,.08); }
.pill.free    { color: var(--cyan); border-color: #16504a; }

/* ------------------------------------------------------------------ 表单 */
label.f { display: block; margin-bottom: 15px; }
label.f > span.lb { display: block; font-size: 12.5px; color: var(--tx-2); margin-bottom: 6px; }
label.f > span.hint { display: block; font-size: 11.5px; color: var(--tx-3); margin-top: 5px; }
input[type=text], input[type=password], input[type=number], input[type=email],
select, textarea {
  width: 100%; padding: 10px 12px; background: var(--bg-2); color: var(--tx);
  border: 1px solid var(--line-2); border-radius: var(--radius);
  font-family: inherit; font-size: 14px; outline: none;
  transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--amber); box-shadow: 0 0 0 3px rgba(245,165,36,.12);
}
input.mono { font-family: var(--mono); letter-spacing: .1em; }
textarea { resize: vertical; min-height: 78px; line-height: 1.6; }
.check { display: flex; gap: 9px; align-items: flex-start; font-size: 13px;
         color: var(--tx-2); margin: 4px 0 18px; }
.check input { width: 15px; height: 15px; margin-top: 3px; accent-color: var(--amber); flex: none; }

.alert { padding: 11px 14px; border-radius: var(--radius); font-size: 13px; margin-bottom: 16px;
         border: 1px solid; }
.alert.err  { color: #ffb4b6; background: rgba(229,72,77,.09);  border-color: #4d2426; }
.alert.ok   { color: #86e0b3; background: rgba(48,163,108,.09); border-color: #1d4433; }
.alert.warn { color: #ffd08a; background: rgba(245,165,36,.08); border-color: var(--amber-dim); }
.alert.info { color: var(--tx-2); background: var(--bg-2); border-color: var(--line-2); }

/* ------------------------------------------------------------------ 详情页 */
.detail { display: grid; grid-template-columns: 1fr 328px; gap: 30px; align-items: start; }
@media (max-width: 900px) { .detail { grid-template-columns: 1fr; } }
.buybox { position: sticky; top: 76px; }
.price { font-family: var(--mono); font-size: 34px; font-weight: 600; color: var(--amber);
         letter-spacing: -.02em; line-height: 1; }
.price small { font-size: 15px; color: var(--tx-3); margin-right: 3px; font-weight: 400; }
.kv { display: grid; grid-template-columns: auto 1fr; gap: 7px 16px; font-size: 13px; }
.kv dt { color: var(--tx-3); white-space: nowrap; }
.kv dd { margin: 0; font-family: var(--mono); font-variant-numeric: tabular-nums; }

.variant { display: block; border: 1px solid var(--line-2); border-radius: var(--radius);
           padding: 12px 14px; margin-bottom: 9px; cursor: pointer; transition: .15s; }
.variant:hover { border-color: var(--tx-3); }
.variant input { display: none; }
.variant:has(input:checked) { border-color: var(--amber); background: rgba(245,165,36,.05); }
.variant .vt { display: flex; justify-content: space-between; align-items: center; gap: 8px;
               font-weight: 600; font-size: 13.5px; }
.variant .vd { font-size: 12px; color: var(--tx-3); margin-top: 4px; line-height: 1.55; }

/* 样例预览 */
.preview { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.preview .head { display: flex; justify-content: space-between; align-items: center;
                 gap: 10px; padding: 9px 13px; background: var(--bg-2);
                 border-bottom: 1px solid var(--line); font-family: var(--mono);
                 font-size: 11.5px; color: var(--tx-3); flex-wrap: wrap; }
.preview .scroll { overflow-x: auto; max-height: 340px; }
.preview table { font-size: 12px; font-family: var(--mono); }
.preview th { position: sticky; top: 0; background: var(--panel); z-index: 1; }
.preview td { white-space: nowrap; padding: 5px 10px; }

/* 发货区 */
.deliver { border: 1px solid #1d4433; background: rgba(48,163,108,.06);
           border-radius: var(--radius); padding: 18px; }
.copyrow { display: flex; gap: 8px; align-items: stretch; margin: 8px 0 2px; }
.copyrow input { font-family: var(--mono); font-size: 13px; }

/* 文档正文 */
.prose { font-size: 14.5px; line-height: 1.85; color: #d3d8de; }
.prose h2 { font-size: 19px; margin: 34px 0 10px; padding-bottom: 7px;
            border-bottom: 1px solid var(--line); }
.prose h3 { font-size: 15.5px; margin: 24px 0 8px; color: var(--amber); }
.prose ul, .prose ol { padding-left: 22px; margin: 0 0 14px; }
.prose li { margin-bottom: 5px; }
.prose code { font-family: var(--mono); font-size: .9em; background: var(--bg-2);
              padding: 1px 5px; border-radius: 2px; border: 1px solid var(--line); }
.prose strong { color: var(--tx); }
.prose blockquote { margin: 14px 0; padding: 2px 0 2px 16px; border-left: 2px solid var(--amber-dim);
                    color: var(--tx-2); }

/* ------------------------------------------------------------------ 页脚 */
footer.bot { padding: 34px 0 46px; color: var(--tx-3); font-size: 12.5px; }
footer.bot .row { display: flex; gap: 20px; flex-wrap: wrap; align-items: center; }
footer.bot a { color: var(--tx-2); }
footer.bot .legal { margin-top: 14px; line-height: 1.8; max-width: 62em; }

/* ------------------------------------------------------------------ 后台 */
.admin-bar { background: #1a1206; border-bottom: 1px solid var(--amber-dim); }
.admin-bar .wrap { display: flex; gap: 18px; align-items: center; height: 42px;
                   font-size: 12.5px; flex-wrap: wrap; }
.admin-bar a { color: #ffd08a; }
.admin-bar .tag { font-family: var(--mono); font-size: 10.5px; letter-spacing: .16em;
                  text-transform: uppercase; color: var(--amber); }

.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 16px; }
.toolbar input[type=text], .toolbar input[type=number], .toolbar select { width: auto; min-width: 120px; }
.spacer { flex: 1; }

details.editor { border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 8px; }
details.editor > summary { padding: 9px 13px; cursor: pointer; font-size: 13px;
                           list-style: none; display: flex; gap: 10px; align-items: center; }
details.editor > summary::-webkit-details-marker { display: none; }
details.editor[open] > summary { border-bottom: 1px solid var(--line); background: var(--bg-2); }
details.editor .body { padding: 14px; }

.muted { color: var(--tx-3); }
.small { font-size: 12px; }
.nowrap { white-space: nowrap; }
.right { text-align: right; }
.mt { margin-top: 18px; }
.mb0 { margin-bottom: 0; }
.flex { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
hr.sep { border: 0; border-top: 1px solid var(--line); margin: 22px 0; }