/* ============================================================
   长鑫科技 · 产业链图景  —  Avant-garde专题站点样式
   ============================================================ */

:root{
  --bg:#05060c;
  --bg-2:#0a0c16;
  --ink:#eef1ff;
  --ink-dim:#9aa3c7;
  --ink-faint:#5b648f;
  --cyan:#00e5ff;
  --magenta:#ff2d7e;
  --violet:#8a5bff;
  --lime:#c6ff3d;
  --amber:#ffb020;
  --red:#ff4d4d;
  --line:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.04);
  --font-display:"Space Grotesk","Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","SF Mono",ui-monospace,"Cascadia Code",Consolas,monospace;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-cn);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  line-height:1.55;
}
::selection{background:var(--magenta);color:#fff}

/* ---------- 背景层 ---------- */
.bg-layer{position:fixed;inset:0;z-index:-2;pointer-events:none}
.bg-grid{
  position:fixed;inset:0;z-index:-2;pointer-events:none;
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 78%);
}
.bg-blob{position:fixed;border-radius:50%;filter:blur(120px);opacity:.5;z-index:-2;pointer-events:none}
.bg-blob.a{width:46vw;height:46vw;background:radial-gradient(circle,var(--violet),transparent 70%);top:-10vw;left:-8vw}
.bg-blob.b{width:42vw;height:42vw;background:radial-gradient(circle,var(--cyan),transparent 70%);bottom:-10vw;right:-6vw;opacity:.35}
.bg-blob.c{width:34vw;height:34vw;background:radial-gradient(circle,var(--magenta),transparent 70%);top:40vh;left:55vw;opacity:.28}
.bg-noise{
  position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
}

/* ---------- 载入动画 ---------- */
#loader{position:fixed;inset:0;z-index:9999;background:var(--bg);display:flex;align-items:center;justify-content:center;flex-direction:column;gap:24px}
#loader .ring{width:64px;height:64px;border-radius:50%;border:2px solid var(--line);border-top-color:var(--cyan);animation:spin 1s linear infinite}
#loader .lt{font-family:var(--font-mono);font-size:12px;letter-spacing:.4em;color:var(--ink-dim);text-transform:uppercase}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- 导航 ---------- */
nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px clamp(18px,4vw,56px);
  mix-blend-mode:difference;
}
nav .brand{font-family:var(--font-mono);font-weight:700;letter-spacing:.18em;font-size:14px;color:#fff}
nav .brand b{color:var(--cyan)}
nav ul{display:flex;gap:clamp(12px,2vw,30px);list-style:none}
nav a{color:#fff;text-decoration:none;font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;opacity:.8;transition:opacity .3s}
nav a:hover{opacity:1}
@media(max-width:760px){nav ul{display:none}}

/* ---------- 通用区块 ---------- */
section{position:relative;padding:clamp(80px,12vh,160px) clamp(18px,5vw,80px)}
.kicker{font-family:var(--font-mono);font-size:12px;letter-spacing:.35em;text-transform:uppercase;color:var(--cyan);display:flex;align-items:center;gap:12px;margin-bottom:22px}
.kicker::before{content:"";width:38px;height:1px;background:var(--cyan)}
h2.title{font-family:var(--font-display);font-weight:700;line-height:.98;font-size:clamp(34px,6.5vw,86px);letter-spacing:-.02em;margin-bottom:20px}
h2.title em{font-style:normal;color:var(--cyan);text-shadow:0 0 40px rgba(0,229,255,.5)}
.lead{color:var(--ink-dim);max-width:60ch;font-size:clamp(15px,1.6vw,18px)}

/* ---------- HERO ---------- */
#hero{height:100vh;min-height:680px;display:flex;flex-direction:column;justify-content:center;padding-top:0}
.hero-eyebrow{font-family:var(--font-mono);font-size:13px;letter-spacing:.4em;color:var(--ink-dim);text-transform:uppercase;margin-bottom:18px}
.hero-h1{font-family:var(--font-display);font-weight:700;font-size:clamp(56px,15vw,220px);line-height:.82;letter-spacing:-.03em;position:relative}
.hero-h1 .line{display:block;overflow:hidden}
.hero-h1 .line span{display:block}
.hero-h1 .glow{color:var(--cyan);text-shadow:0 0 60px rgba(0,229,255,.55)}
.hero-h1 .mag{color:var(--magenta);text-shadow:0 0 60px rgba(255,45,126,.5)}
.hero-sub{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px 40px;align-items:baseline}
.hero-sub .code{font-family:var(--font-mono);color:var(--lime);font-size:15px;letter-spacing:.15em;border:1px solid var(--line);padding:6px 14px;border-radius:99px}
.hero-sub .tag{font-family:var(--font-mono);font-size:12px;color:var(--ink-dim);letter-spacing:.2em}
.hero-stats{margin-top:54px;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.hero-stats .s{background:var(--bg);padding:20px 18px}
.hero-stats .s .v{font-family:var(--font-display);font-weight:700;font-size:clamp(22px,3vw,38px);line-height:1}
.hero-stats .s .v.cy{color:var(--cyan)}
.hero-stats .s .v.mg{color:var(--magenta)}
.hero-stats .s .l{font-family:var(--font-mono);font-size:11px;color:var(--ink-dim);letter-spacing:.1em;margin-top:8px}
.scroll-hint{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);font-family:var(--font-mono);font-size:10px;letter-spacing:.3em;color:var(--ink-faint);text-transform:uppercase;display:flex;flex-direction:column;align-items:center;gap:8px}
.scroll-hint .bar{width:1px;height:42px;background:linear-gradient(var(--cyan),transparent);animation:drop 1.8s infinite}
@keyframes drop{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ticker marquee */
.ticker{position:relative;z-index:2;margin-top:30px;overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:10px 0;white-space:nowrap}
.ticker .track{display:inline-block;font-family:var(--font-mono);font-size:13px;letter-spacing:.2em;color:var(--ink-faint);animation:marq 26s linear infinite}
.ticker .track span{margin:0 28px}
.ticker .track b{color:var(--lime)}
@keyframes marq{to{transform:translateX(-50%)}}

/* ---------- 上市时间轴 (非线性) ---------- */
#listing .timeline{position:relative;margin-top:54px}
.tl-track{position:relative;display:flex;gap:0;overflow-x:auto;padding-bottom:20px;scrollbar-width:none}
.tl-track::-webkit-scrollbar{display:none}
.tl-node{flex:0 0 auto;width:min(78vw,300px);padding:0 26px;position:relative}
.tl-node .dot{width:14px;height:14px;border-radius:50%;background:var(--cyan);box-shadow:0 0 18px var(--cyan);position:relative;z-index:2}
.tl-node:nth-child(even) .dot{background:var(--magenta);box-shadow:0 0 18px var(--magenta)}
.tl-node .date{font-family:var(--font-mono);font-size:12px;color:var(--lime);letter-spacing:.12em;margin:14px 0 8px}
.tl-node .ttl{font-family:var(--font-display);font-weight:600;font-size:19px;line-height:1.15;margin-bottom:8px}
.tl-node .desc{color:var(--ink-dim);font-size:13px}
.tl-line{position:absolute;top:7px;left:0;right:0;height:1px;background:linear-gradient(90deg,var(--cyan),var(--magenta));opacity:.4;z-index:1}

/* ---------- 行业格局 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,64px);align-items:center}
@media(max-width:900px){.split{grid-template-columns:1fr}}
#ringWrap{position:relative;aspect-ratio:1;width:100%;max-width:480px;margin:0 auto}
#ringWrap canvas{width:100%;height:100%}
.share-list{margin-top:8px}
.share-row{display:grid;grid-template-columns:130px 1fr 64px;align-items:center;gap:14px;padding:12px 0;border-bottom:1px solid var(--line)}
.share-row .nm{font-family:var(--font-display);font-weight:600;font-size:15px}
.share-row .nm small{display:block;font-family:var(--font-mono);font-size:10px;color:var(--ink-faint);letter-spacing:.1em}
.share-row .bar{height:10px;background:var(--glass);border-radius:99px;overflow:hidden}
.share-row .bar i{display:block;height:100%;border-radius:99px;transform:scaleX(0);transform-origin:left}
.share-row .pct{font-family:var(--font-mono);text-align:right;font-size:13px;color:var(--ink)}
.s1 .bar i{background:linear-gradient(90deg,#3a3f63,#6b73a8)}
.s2 .bar i{background:linear-gradient(90deg,#00e5ff,#8a5bff)}
.s3 .bar i{background:linear-gradient(90deg,#ff2d7e,#ffb020)}
.s4 .bar i{background:linear-gradient(90deg,#c6ff3d,#00e5ff)}
.fact-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:30px}
.fact{background:var(--glass);border:1px solid var(--line);border-radius:14px;padding:18px}
.fact .n{font-family:var(--font-display);font-weight:700;font-size:30px;color:var(--cyan)}
.fact .t{font-size:12px;color:var(--ink-dim);margin-top:6px}

/* ---------- 产业链 3D ---------- */
#chain{background:linear-gradient(180deg,transparent,rgba(10,12,22,.6),transparent)}
.chain-stage{position:relative;height:78vh;min-height:560px;margin-top:40px;border:1px solid var(--line);border-radius:20px;overflow:hidden;background:radial-gradient(circle at 50% 50%,rgba(138,91,255,.08),transparent 60%)}
#chainCanvas{position:absolute;inset:0;width:100%;height:100%;display:block;cursor:grab}
#chainCanvas:active{cursor:grabbing}
.chain-labels{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.clabel{position:absolute;transform:translate(-50%,-50%);font-family:var(--font-mono);font-size:11px;letter-spacing:.04em;padding:3px 8px;border-radius:6px;white-space:nowrap;background:rgba(5,6,12,.7);border:1px solid var(--line);color:var(--ink);transition:opacity .25s,transform .1s;backdrop-filter:blur(4px)}
.clabel.up{color:var(--cyan);border-color:rgba(0,229,255,.4)}
.clabel.core{color:#fff;background:rgba(255,45,126,.18);border-color:var(--magenta);font-weight:700;font-size:13px}
.clabel.down{color:var(--lime);border-color:rgba(198,255,61,.4)}
.chain-legend{position:absolute;left:18px;bottom:18px;display:flex;gap:18px;font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;z-index:3}
.chain-legend i{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:6px;vertical-align:middle}
.chain-tip{position:absolute;z-index:5;max-width:240px;background:rgba(10,12,22,.94);border:1px solid var(--cyan);border-radius:10px;padding:12px 14px;font-size:12px;color:var(--ink);opacity:0;pointer-events:none;transition:opacity .2s;transform:translate(-50%,calc(-100% - 16px))}
.chain-tip h4{font-family:var(--font-display);font-size:14px;margin-bottom:4px}
.chain-tip .grp{font-family:var(--font-mono);font-size:10px;letter-spacing:.1em;color:var(--cyan);text-transform:uppercase}
.chain-tip p{color:var(--ink-dim);margin-top:6px;line-height:1.45}
.chain-hint{position:absolute;right:18px;top:18px;font-family:var(--font-mono);font-size:10px;letter-spacing:.15em;color:var(--ink-faint);text-transform:uppercase;z-index:3;text-align:right}
.chain-controls{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}
.chip{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;padding:8px 16px;border-radius:99px;border:1px solid var(--line);background:var(--glass);color:var(--ink-dim);cursor:pointer;transition:.25s;user-select:none}
.chip:hover,.chip.on{color:#fff;border-color:var(--cyan);background:rgba(0,229,255,.12)}

/* ---------- 财务 ---------- */
.fin-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:40px}
@media(max-width:760px){.fin-grid{grid-template-columns:repeat(2,1fr)}}
.fin-grid .c{background:var(--bg);padding:24px 20px}
.fin-grid .c .v{font-family:var(--font-display);font-weight:700;font-size:clamp(26px,3.4vw,44px);line-height:1}
.fin-grid .c .v.cy{color:var(--cyan)}
.fin-grid .c .v.mg{color:var(--magenta)}
.fin-grid .c .v.li{color:var(--lime)}
.fin-grid .c .l{font-family:var(--font-mono);font-size:11px;color:var(--ink-dim);letter-spacing:.08em;margin-top:10px}
.fin-grid .c .d{font-family:var(--font-mono);font-size:11px;color:var(--lime);margin-top:6px}
.fin-note{margin-top:18px;color:var(--ink-faint);font-size:12px;font-family:var(--font-mono);letter-spacing:.04em}

/* ---------- 风险与机会 ---------- */
.ro-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(20px,3vw,40px);margin-top:44px}
@media(max-width:820px){.ro-grid{grid-template-columns:1fr}}
.ro-col h3{font-family:var(--font-display);font-weight:700;font-size:24px;margin-bottom:18px;display:flex;align-items:center;gap:12px}
.ro-col.risk h3{color:var(--red)}
.ro-col.opp h3{color:var(--lime)}
.ro-col h3 .badge{font-family:var(--font-mono);font-size:11px;padding:3px 10px;border-radius:99px;border:1px solid currentColor}
.ro-item{background:var(--glass);border:1px solid var(--line);border-left:3px solid var(--red);border-radius:12px;padding:18px 20px;margin-bottom:14px;transition:.3s}
.ro-col.opp .ro-item{border-left-color:var(--lime)}
.ro-item:hover{transform:translateX(6px);background:rgba(255,255,255,.06)}
.ro-item .h{font-family:var(--font-display);font-weight:600;font-size:16px;margin-bottom:6px;display:flex;justify-content:space-between;gap:10px}
.ro-item .h .lv{font-family:var(--font-mono);font-size:10px;letter-spacing:.1em;padding:2px 8px;border-radius:99px}
.ro-item.risk .lv{background:rgba(255,77,77,.15);color:var(--red)}
.ro-item.opp .lv{background:rgba(198,255,61,.15);color:var(--lime)}
.ro-item p{color:var(--ink-dim);font-size:13.5px}

/* ---------- 结语 ---------- */
#outlook blockquote{font-family:var(--font-display);font-weight:600;font-size:clamp(22px,3.4vw,40px);line-height:1.2;max-width:24ch;border-left:3px solid var(--cyan);padding-left:24px;margin-top:30px}
#outlook blockquote em{font-style:normal;color:var(--cyan)}
.thesis{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:40px}
@media(max-width:760px){.thesis{grid-template-columns:1fr}}
.thesis .t{background:var(--bg);padding:22px 20px}
.thesis .t .n{font-family:var(--font-mono);font-size:11px;color:var(--violet);letter-spacing:.2em}
.thesis .t .h{font-family:var(--font-display);font-weight:600;font-size:18px;margin:10px 0 8px}
.thesis .t p{font-size:13px;color:var(--ink-dim)}

/* ---------- footer ---------- */
footer{padding:60px clamp(18px,5vw,80px) 80px;border-top:1px solid var(--line);color:var(--ink-faint);font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;line-height:1.9}
footer b{color:var(--ink-dim)}
footer .dis{margin-top:16px;max-width:70ch;color:var(--ink-faint);opacity:.7}

/* reveal helper */
.reveal{opacity:0;transform:translateY(40px)}
.fade-line{overflow:hidden}