/* ==========================================================
   Raqcoin / 热矿币 · 第三方技术介绍站
   设计系统：暗色量子科技风
   ========================================================== */

:root{
  --bg:            #070a12;
  --bg-soft:       #0b0f1a;
  --bg-elev:       #101728;
  --surface:       rgba(255,255,255,.045);
  --surface-2:     rgba(255,255,255,.07);
  --line:          rgba(255,255,255,.10);
  --line-strong:   rgba(255,255,255,.18);

  --text:          #e8edf7;
  --text-dim:      #a3b0c7;
  --text-mute:     #6f7d96;

  --c-cyan:        #38bdf8;
  --c-blue:        #60a5fa;
  --c-indigo:      #818cf8;
  --c-violet:      #c084fc;
  --c-emerald:     #34d399;
  --c-amber:       #fbbf24;
  --c-rose:        #fb7185;

  --grad:          linear-gradient(135deg,#38bdf8 0%,#818cf8 45%,#c084fc 100%);
  --grad-soft:     linear-gradient(135deg,rgba(56,189,248,.16),rgba(192,132,252,.16));

  --r-sm: 10px;
  --r:    16px;
  --r-lg: 22px;

  --shadow: 0 18px 50px -20px rgba(0,0,0,.85);
  --shadow-lg: 0 40px 90px -30px rgba(56,189,248,.22);

  --maxw: 1180px;
  --nav-h: 68px;

  --ff: "PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,
        BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --ff-mono: "SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}

*,*::before,*::after{ box-sizing:border-box; }

html{ scroll-behavior:smooth; scroll-padding-top:calc(var(--nav-h) + 18px); }

body{
  margin:0;
  font-family:var(--ff);
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

/* 背景光晕 */
body::before{
  content:"";
  position:fixed; inset:0; z-index:-2;
  background:
    radial-gradient(900px 600px at 12% -8%, rgba(56,189,248,.16), transparent 60%),
    radial-gradient(760px 520px at 92% 4%, rgba(192,132,252,.14), transparent 62%),
    radial-gradient(700px 700px at 50% 108%, rgba(52,211,153,.08), transparent 60%);
}
body::after{
  content:"";
  position:fixed; inset:0; z-index:-1; pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 22%, #000 0%, transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 22%, #000 0%, transparent 78%);
}

img{ max-width:100%; }
a{ color:var(--c-cyan); text-decoration:none; transition:.2s; }
a:hover{ color:var(--c-violet); }

h1,h2,h3,h4,h5{
  margin:0 0 .6em;
  line-height:1.35;
  font-weight:700;
  letter-spacing:.2px;
}
p{ margin:0 0 1.05em; color:var(--text-dim); }
strong{ color:var(--text); font-weight:600; }

.wrap{ width:min(100% - 40px, var(--maxw)); margin-inline:auto; }

.text-grad{
  background:var(--grad);
  -webkit-background-clip:text; background-clip:text;
  -webkit-text-fill-color:transparent; color:transparent;
}
.mono{ font-family:var(--ff-mono); }

/* ---------------- 导航 ---------------- */
.nav{
  position:sticky; top:0; z-index:100;
  height:var(--nav-h);
  display:flex; align-items:center;
  background:rgba(7,10,18,.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.nav .wrap{ display:flex; align-items:center; gap:24px; }

.brand{ display:flex; align-items:center; gap:11px; color:var(--text); font-weight:700; letter-spacing:.4px; }
.brand:hover{ color:var(--text); }
.brand svg{ display:block; }
.brand b{ font-size:18px; }
.brand small{ display:block; font-size:11px; color:var(--text-mute); font-weight:400; letter-spacing:1.4px; }

.nav-links{ display:flex; gap:4px; margin-left:auto; }
.nav-links a{
  position:relative; color:var(--text-dim);
  padding:8px 13px; border-radius:999px; font-size:14.5px;
}
.nav-links a:hover{ color:var(--text); background:var(--surface); }
.nav-links a.active{ color:#06101c; background:var(--grad); font-weight:600; }

.nav-toggle{
  display:none; margin-left:auto;
  width:42px; height:42px; border:1px solid var(--line);
  background:var(--surface); border-radius:12px; color:var(--text);
  font-size:18px; cursor:pointer;
}

@media (max-width:900px){
  .nav-toggle{ display:block; }
  .nav-links{
    position:absolute; top:var(--nav-h); left:0; right:0;
    flex-direction:column; gap:2px; padding:14px 20px 22px;
    background:rgba(9,13,22,.97);
    backdrop-filter:blur(18px);
    border-bottom:1px solid var(--line);
    display:none;
  }
  .nav-links.open{ display:flex; }
  .nav-links a{ padding:12px 14px; border-radius:10px; }
}

/* ---------------- Hero ---------------- */
.hero{
  position:relative; padding:96px 0 76px; overflow:hidden;
}
.hero-grid{
  display:grid; grid-template-columns:1.15fr .85fr; gap:56px; align-items:center;
}
@media (max-width:960px){ .hero-grid{ grid-template-columns:1fr; gap:42px; } .hero{ padding:64px 0 48px; } }

.eyebrow{
  display:inline-flex; align-items:center; gap:9px;
  padding:7px 15px; border-radius:999px;
  border:1px solid var(--line-strong); background:var(--surface);
  font-size:13px; color:var(--text-dim); letter-spacing:.5px;
}
.eyebrow i{
  width:7px; height:7px; border-radius:50%; background:var(--c-emerald);
  box-shadow:0 0 0 4px rgba(52,211,153,.16);
}
.hero h1{ font-size:clamp(34px,5vw,60px); margin:22px 0 18px; letter-spacing:-.5px; }
.hero .lead{ font-size:17.5px; max-width:60ch; }
.hero-actions{ display:flex; flex-wrap:wrap; gap:14px; margin-top:30px; }

.btn{
  display:inline-flex; align-items:center; gap:9px;
  padding:13px 26px; border-radius:999px; font-size:15px; font-weight:600;
  border:1px solid transparent; cursor:pointer; transition:.25s;
}
.btn-primary{ background:var(--grad); color:#06101c; box-shadow:var(--shadow-lg); }
.btn-primary:hover{ color:#06101c; transform:translateY(-2px); }
.btn-ghost{ border-color:var(--line-strong); color:var(--text); background:var(--surface); }
.btn-ghost:hover{ color:var(--text); background:var(--surface-2); transform:translateY(-2px); }

/* Hero 右侧：轨道芯片卡 */
.orbit{
  position:relative; aspect-square:1/1; min-height:340px;
  display:grid; place-items:center;
}
.orbit .ring{
  position:absolute; inset:0; border-radius:50%;
  border:1px solid var(--line);
}
.orbit .ring:nth-child(2){ inset:11%; border-color:rgba(56,189,248,.28); border-style:dashed; animation:spin 34s linear infinite; }
.orbit .ring:nth-child(3){ inset:24%; border-color:rgba(192,132,252,.26); animation:spin 22s linear reverse infinite; }
@keyframes spin{ to{ transform:rotate(360deg); } }
.orbit .core{
  position:relative; z-index:2; width:56%; aspect-ratio:1; border-radius:50%;
  display:grid; place-items:center; text-align:center;
  background:var(--grad-soft);
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-lg);
  backdrop-filter:blur(6px);
}
.orbit .core b{ display:block; font-size:26px; letter-spacing:1px; }
.orbit .core span{ font-size:12.5px; color:var(--text-dim); letter-spacing:2px; }
.orbit .chip{
  position:absolute; z-index:3; padding:7px 12px; border-radius:999px;
  font-size:12px; color:var(--text-dim); white-space:nowrap;
  background:rgba(16,23,40,.9); border:1px solid var(--line);
  backdrop-filter:blur(8px);
}
.orbit .chip:nth-of-type(1){ top:6%;  right:2%; }
.orbit .chip:nth-of-type(2){ bottom:12%; left:0%; }
.orbit .chip:nth-of-type(3){ top:46%; right:-4%; }

/* ---------------- 通用区块 ---------------- */
section{ padding:82px 0; }
section.alt{ background:linear-gradient(180deg,transparent,rgba(255,255,255,.022),transparent); }

.sec-head{ text-align:center; max-width:760px; margin:0 auto 52px; }
.sec-head h2{ font-size:clamp(26px,3.4vw,38px); }
.sec-head .tag{
  display:inline-block; margin-bottom:14px; font-size:12.5px; letter-spacing:2.4px;
  text-transform:uppercase; color:var(--c-cyan);
}
.sec-head p{ margin-bottom:0; }

/* 卡片 */
.grid{ display:grid; gap:22px; }
.g-2{ grid-template-columns:repeat(2,1fr); }
.g-3{ grid-template-columns:repeat(3,1fr); }
.g-4{ grid-template-columns:repeat(4,1fr); }
@media (max-width:1000px){ .g-4{ grid-template-columns:repeat(2,1fr); } .g-3{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:680px){ .g-2,.g-3,.g-4{ grid-template-columns:1fr; } }

.card{
  position:relative; padding:28px 26px;
  background:var(--surface); border:1px solid var(--line);
  border-radius:var(--r-lg); overflow:hidden;
  transition:transform .3s, border-color .3s, background .3s;
}
.card::after{
  content:""; position:absolute; inset:0; opacity:0; transition:.35s;
  background:radial-gradient(420px 220px at var(--mx,50%) var(--my,0%), rgba(129,140,248,.16), transparent 70%);
  pointer-events:none;
}
.card:hover{ transform:translateY(-5px); border-color:var(--line-strong); background:var(--surface-2); }
.card:hover::after{ opacity:1; }
.card h3{ font-size:18.5px; margin-bottom:12px; }
.card p:last-child{ margin-bottom:0; }
.card .ico{
  width:46px; height:46px; border-radius:14px; display:grid; place-items:center;
  margin-bottom:18px; font-size:21px;
  background:var(--grad-soft); border:1px solid var(--line-strong);
}

/* 统计数字 */
.stats{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
@media (max-width:820px){ .stats{ grid-template-columns:repeat(2,1fr); } }
.stat{
  padding:26px 22px; border-radius:var(--r); text-align:center;
  background:var(--surface); border:1px solid var(--line);
}
.stat b{ display:block; font-size:clamp(22px,2.6vw,32px); font-weight:800; letter-spacing:-.5px; }
.stat span{ font-size:13.5px; color:var(--text-mute); letter-spacing:.6px; }

/* 表格 */
.table-wrap{ overflow-x:auto; border:1px solid var(--line); border-radius:var(--r); background:var(--surface); }
table{ width:100%; border-collapse:collapse; min-width:520px; }
th,td{ padding:15px 20px; text-align:left; border-bottom:1px solid var(--line); font-size:15px; }
th{ color:var(--text); font-weight:600; background:rgba(255,255,255,.035); white-space:nowrap; }
td{ color:var(--text-dim); }
tbody tr:last-child td{ border-bottom:none; }
tbody tr:hover td{ background:rgba(255,255,255,.028); }
td .mono{ color:var(--c-cyan); font-size:14px; }

/* 时间轴 */
.timeline{ position:relative; padding-left:34px; }
.timeline::before{
  content:""; position:absolute; left:9px; top:6px; bottom:6px; width:2px;
  background:linear-gradient(180deg,var(--c-cyan),var(--c-indigo),var(--c-violet),transparent);
}
.tl-item{ position:relative; padding-bottom:30px; }
.tl-item:last-child{ padding-bottom:0; }
.tl-item::before{
  content:""; position:absolute; left:-31px; top:9px;
  width:12px; height:12px; border-radius:50%;
  background:var(--bg); border:2px solid var(--c-indigo);
  box-shadow:0 0 0 4px rgba(129,140,248,.14);
}
.tl-item .year{
  display:inline-block; font-family:var(--ff-mono); font-size:13px;
  color:var(--c-cyan); letter-spacing:1px; margin-bottom:4px;
}
.tl-item h3{ font-size:18px; margin:0 0 8px; }
.tl-item p{ font-size:15px; margin:0; }

/* 折叠 / 手风琴 */
details{
  border:1px solid var(--line); border-radius:var(--r);
  background:var(--surface); margin-bottom:14px; overflow:hidden;
}
details[open]{ background:var(--surface-2); border-color:var(--line-strong); }
summary{
  cursor:pointer; list-style:none; padding:18px 22px;
  display:flex; align-items:center; gap:14px;
  font-weight:600; font-size:16.5px; color:var(--text);
}
summary::-webkit-details-marker{ display:none; }
summary .num{
  flex:none; width:30px; height:30px; border-radius:9px;
  display:grid; place-items:center; font-size:13px; font-family:var(--ff-mono);
  color:#06101c; background:var(--grad); font-weight:700;
}
summary .caret{ margin-left:auto; color:var(--text-mute); transition:.3s; font-size:13px; }
details[open] summary .caret{ transform:rotate(180deg); color:var(--c-cyan); }
.details-body{ padding:0 22px 22px 66px; }
.details-body p:last-child{ margin-bottom:0; }
@media (max-width:620px){ .details-body{ padding-left:22px; } }

/* 有序要点列表 */
.points{ counter-reset:p; list-style:none; margin:0; padding:0; }
.points li{
  position:relative; counter-increment:p; margin-bottom:18px;
  padding-left:52px; color:var(--text-dim); font-size:16px; min-height:34px;
}
.points li::before{
  content:counter(p); position:absolute; left:0; top:0;
  width:34px; height:34px; border-radius:11px;
  display:grid; place-items:center;
  font-family:var(--ff-mono); font-size:14px; font-weight:700; color:#06101c;
  background:var(--grad);
}

/* 引用 / 提示块 */
.note{
  padding:20px 24px; border-radius:var(--r); border-left:3px solid var(--c-amber);
  background:rgba(251,191,36,.07); color:var(--text-dim); font-size:15.5px;
}
.note strong{ color:var(--c-amber); }
.note.info{ border-color:var(--c-cyan); background:rgba(56,189,248,.07); }
.note.info strong{ color:var(--c-cyan); }
.note.danger{ border-color:var(--c-rose); background:rgba(251,113,133,.08); }
.note.danger strong{ color:var(--c-rose); }

blockquote{
  margin:0 0 24px; padding:18px 24px;
  border-left:3px solid var(--c-violet); border-radius:0 var(--r) var(--r) 0;
  background:rgba(192,132,252,.07); color:var(--text-mute);
  font-family:var(--ff-mono); font-size:14px; line-height:1.9;
}

/* 正文排版（研究报告页） */
.article{ max-width:840px; margin-inline:auto; }
.article h2{
  font-size:26px; margin:52px 0 20px; padding-top:26px;
  border-top:1px solid var(--line);
}
.article h2:first-of-type{ border-top:none; padding-top:0; }
.article h3{ font-size:19px; margin:32px 0 14px; color:var(--text); }
.article p{ font-size:16.5px; }
.article ul,.article ol{ color:var(--text-dim); padding-left:22px; }
.article li{ margin-bottom:10px; }
.article .ref{ font-size:14px; color:var(--text-mute); word-break:break-all; }
.article .ref a{ font-family:var(--ff-mono); font-size:13px; }

/* 新闻卡 */
.news-card{
  display:flex; flex-direction:column; gap:12px; padding:26px;
  background:var(--surface); border:1px solid var(--line); border-radius:var(--r-lg);
  transition:.3s;
}
.news-card:hover{ transform:translateY(-4px); border-color:var(--line-strong); background:var(--surface-2); }
.news-card .meta{ font-size:12.5px; color:var(--text-mute); letter-spacing:1px; }
.news-card h3{ font-size:17px; margin:0; line-height:1.6; }
.news-card p{ margin:0; font-size:14.8px; }
.news-card .arrow{ margin-top:auto; font-size:13.5px; color:var(--c-cyan); }

/* 面包屑 */
.crumb{ font-size:13.5px; color:var(--text-mute); margin-bottom:18px; }
.crumb a{ color:var(--text-dim); }

/* 页脚 */
footer{
  margin-top:60px; padding:64px 0 30px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,transparent,rgba(56,189,248,.05));
}
.foot-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:40px; }
@media (max-width:820px){ .foot-grid{ grid-template-columns:1fr; gap:30px; } }
footer h4{ font-size:15px; letter-spacing:1.4px; color:var(--text); margin-bottom:16px; }
footer ul{ list-style:none; margin:0; padding:0; }
footer li{ margin-bottom:10px; font-size:14.5px; color:var(--text-dim); }
footer .copyright{
  margin-top:44px; padding-top:24px; border-top:1px solid var(--line);
  text-align:center; font-size:13.5px; color:var(--text-mute);
}

/* 页首标题 */
.page-head{ padding:70px 0 20px; }
.page-head h1{ font-size:clamp(30px,4.4vw,48px); }
.page-head p{ font-size:17px; max-width:68ch; }

/* 通用辅助 */
.split{ display:grid; grid-template-columns:1fr 1fr; gap:26px; }
@media (max-width:820px){ .split{ grid-template-columns:1fr; } }
.toTop{
  position:fixed; right:24px; bottom:24px; z-index:99;
  width:46px; height:46px; border-radius:50%;
  border:1px solid var(--line-strong); background:rgba(16,23,40,.9);
  backdrop-filter:blur(10px); color:var(--text); cursor:pointer;
  display:none; place-items:center; font-size:17px;
}
.toTop.show{ display:grid; }
.toTop:hover{ background:var(--grad); color:#06101c; border-color:transparent; }

/* 入场动画 */
.reveal{ opacity:0; transform:translateY(26px); transition:opacity .7s cubic-bezier(.22,.7,.3,1), transform .7s cubic-bezier(.22,.7,.3,1); }
.reveal.in{ opacity:1; transform:none; }

@media (prefers-reduced-motion:reduce){
  *{ animation:none !important; transition:none !important; }
  .reveal{ opacity:1; transform:none; }
}