:root{--ocean:#081A33;--ocean2:#0B2447;--ocean3:#0F315C;--cyan:#22D3EE;--cyan2:#67E8F9;--white:#F8FAFC;--dim:#93A9C4;--line:rgba(103,232,249,.16)}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;background:#050D1C;color:var(--white);line-height:1.9}
a{text-decoration:none;color:inherit}
/* ============ 导航 ============ */ .nav{position:sticky;top:0;z-index:99;display:flex;align-items:center;justify-content:space-between;
  padding:0 4vw;height:62px;background:rgba(5,13,28,.82);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .logo{font-weight:800;font-size:14px;letter-spacing:3px;color:var(--white)}
.nav .logo b{color:var(--cyan)}
.nav .links{display:flex;gap:26px;font-size:13px;color:var(--dim)}
.nav .links a:hover{color:var(--cyan)}
.nav .btns{display:flex;gap:10px}
.nav .btns a{font-size:12px;padding:7px 16px;border-radius:20px}
.nav .btns .p{background:var(--cyan);color:#04121F;font-weight:700}
.nav .btns .s{border:1px solid var(--cyan);color:var(--cyan)}
/* ============ CTA 双按钮 ============ */ .cta{display:flex;gap:12px;margin-top:26px}
.cta a{font-size:14px;font-weight:700;padding:11px 26px;border-radius:24px}
.cta .p{background:var(--cyan);color:#04121F}
.cta .s{border:1px solid var(--cyan);color:var(--cyan)}
.cta .p:hover{background:var(--cyan2)}
.cta .s:hover{background:rgba(34,211,238,.12)}
/* ============ Hero ============ */ .hero{min-height:100vh;background:radial-gradient(1200px 700px at 28% 40%,#0E2C55 0%,var(--ocean) 55%,#050D1C 100%);display:flex;align-items:center;gap:2vw;padding:0 4vw;position:relative;overflow:hidden}
.hero .stage{flex:1.15;position:relative;min-height:72vh;display:flex;align-items:center;justify-content:center}
.hero .stage canvas{width:100%;max-width:640px;height:auto}
.hero .side{flex:.85;max-width:470px}
.kicker{font-size:12px;letter-spacing:5px;color:var(--cyan);margin-bottom:18px}
.hero h1{font-family:'Noto Serif SC','Source Han Serif SC','STZhongsong','STSong','SimSun',serif;font-size:44px;font-weight:900;line-height:1.3;letter-spacing:3px}
.hero h1 .hl{color:var(--cyan)}
.hero .sub{margin-top:18px;color:var(--dim);font-size:15px;line-height:1.9}
.stats{display:flex;margin-top:30px;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:rgba(11,36,71,.5)}
.stats .st{flex:1;padding:14px 10px;text-align:center;border-right:1px solid var(--line)}
.stats .st:last-child{border-right:none}
.stats .st .n{font-size:22px;font-weight:800;color:var(--cyan2)}
.stats .st .l{font-size:11px;color:var(--dim);margin-top:4px}
.hint{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);font-size:11px;color:var(--dim);letter-spacing:2px;display:flex;align-items:center;gap:8px}
.hint .arr{display:inline-block;animation:drop 1.6s ease-in-out infinite;color:var(--cyan)}
0%,100%{transform:translateY(0);opacity:.5}
50%{transform:translateY(6px);opacity:1}
/* ============ 节点城市 ============ */ .nodes{background:var(--ocean2);padding:90px 4vw 70px}
.nwrap{display:flex;gap:3vw;max-width:1280px;margin:0 auto}
.nwrap .left{flex:.9;position:sticky;top:90px;align-self:flex-start}
.nwrap .left h2{font-size:30px;font-weight:900;letter-spacing:1px}
.nwrap .left h2 .hl{color:var(--cyan)}
.nwrap .left p{color:var(--dim);font-size:14px;line-height:1.9;margin-top:14px}
.nwrap .left canvas{width:100%;max-width:430px;margin-top:22px;border:1px solid var(--line);border-radius:16px;background:#071426}
.nwrap .right{flex:1.1}
.cityrow{display:flex;align-items:center;gap:14px;padding:15px 18px;border:1px solid var(--line);border-radius:12px;
  margin-bottom:12px;background:rgba(5,13,28,.4);transition:.25s}
.cityrow:hover{border-color:var(--cyan);transform:translateX(6px)}
.cityrow .dot{width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
.cityrow .ct{width:130px;font-weight:700;font-size:15px}
.cityrow .role{flex:1;color:var(--dim);font-size:12px}
.cityrow .ping{font-family:'Courier New',monospace;font-weight:800;color:var(--cyan2);font-size:15px}
.cityrow .ping small{color:var(--dim);font-weight:400}
/* ============ 优化图解 ============ */ .opt{background:var(--ocean3);padding:90px 4vw}
.opt h2{font-size:30px;font-weight:900;text-align:center;letter-spacing:1px}
.opt h2 .hl{color:var(--cyan)}
.opt .sub{text-align:center;color:var(--dim);font-size:14px;margin:14px auto 44px;max-width:640px;line-height:1.9}
.route{max-width:1080px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;position:relative}
.route .node{width:118px;height:118px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;
  border:1px solid var(--cyan);background:rgba(34,211,238,.08);position:relative;z-index:2}
.route .node b{font-size:15px}
.route .node i{font-style:normal;font-size:10px;color:var(--dim);margin-top:6px}
.route .node.on{background:rgba(34,211,238,.2);box-shadow:0 0 30px rgba(34,211,238,.35)}
.route .leg{flex:1;height:2px;background:linear-gradient(90deg,rgba(34,211,238,.9),rgba(34,211,238,.15));position:relative;margin:0 6px}
.route .leg .pack{position:absolute;top:-4px;left:0;width:10px;height:10px;border-radius:50%;background:var(--cyan2);
  box-shadow:0 0 12px var(--cyan2);animation:packmove 2.6s linear infinite}
.route .leg b{position:absolute;top:-22px;left:50%;transform:translateX(-50%);font-size:11px;color:var(--cyan2);font-weight:700;white-space:nowrap}
0%{left:0;opacity:0}
8%{opacity:1}
92%{opacity:1}
100%{left:calc(100% - 10px);opacity:0}
.vs{display:flex;gap:24px;max-width:1080px;margin:52px auto 0}
.vs .v{flex:1;border:1px solid var(--line);border-radius:14px;padding:22px 24px;background:rgba(5,13,28,.4)}
.vs .v h3{font-size:14px;margin-bottom:12px;display:flex;justify-content:space-between;align-items:center}
.vs .v h4 .tag{font-size:10px;padding:3px 10px;border-radius:10px;letter-spacing:1px}
.vs .v.old h4 .tag{background:rgba(147,169,196,.15);color:var(--dim)}
.vs .v.new h4 .tag{background:rgba(34,211,238,.15);color:var(--cyan)}
.vs .v .bar{height:10px;border-radius:6px;background:rgba(147,169,196,.15);position:relative;margin:16px 0 8px;overflow:hidden}
.vs .v .bar i{position:absolute;top:0;left:0;height:100%;border-radius:6px}
.vs .v.old .bar i{width:78%;background:linear-gradient(90deg,#64748B,#94A3B8)}
.vs .v.new .bar i{width:46%;background:linear-gradient(90deg,var(--cyan),var(--cyan2));box-shadow:0 0 14px rgba(34,211,238,.7)}
.vs .v .num{font-size:22px;font-weight:800}
.vs .v.old .num{color:var(--dim)}
.vs .v.new .num{color:var(--cyan2)}
.vs .v .tip{font-size:12px;color:var(--dim);line-height:1.7;margin-top:8px}
/* ============ 行情快照 ============ */ .snap{background:#0E2C55;padding:90px 4vw}
.snap .sec-h{text-align:center;margin-bottom:10px}
.snap .sec-h h2{font-size:30px;font-weight:900;letter-spacing:1px}
.snap .sec-h h2 .hl{color:var(--cyan)}
.snap .sec-h p{color:var(--dim);font-size:14px;margin:12px auto 40px;max-width:620px;line-height:1.9}
.snapgrid{max-width:1120px;margin:0 auto;display:grid;grid-template-columns:repeat(6,1fr);grid-auto-rows:96px;gap:18px}
.mainc{grid-column:span 3;grid-row:span 2;border:1px solid var(--cyan);border-radius:18px;background:linear-gradient(150deg,rgba(34,211,238,.14),rgba(5,13,28,.5));padding:26px 28px;position:relative;overflow:hidden}
.mainc::before{content:'';position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--cyan),transparent)}
.mainc .cb{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.mainc .cb .ic{width:42px;height:42px;border-radius:12px;background:rgba(240,185,11,.18);border:1px solid rgba(240,185,11,.5);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:900;color:#F0B90B}
.mainc .cb b{font-size:19px}
.mainc .cb .pulse{margin-left:auto;font-size:10px;color:var(--cyan);letter-spacing:2px;display:flex;align-items:center;gap:6px}
.mainc .cb .pulse::before{content:'';width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px var(--cyan);animation:blink 1.4s infinite}
.mainc .price{font-size:40px;font-weight:900;font-family:'Courier New',monospace;letter-spacing:1px}
.mainc .chg{display:inline-block;margin-top:10px;font-size:14px;font-weight:800;padding:4px 12px;border-radius:14px;background:rgba(34,211,238,.14);color:var(--cyan2)}
.mainc .vol{margin-top:12px;font-size:12px;color:var(--dim)}
.mainc .vol b{color:var(--white)}
.subc{border:1px solid var(--line);border-radius:16px;background:rgba(5,13,28,.45);padding:16px 18px;display:flex;flex-direction:column;justify-content:center;position:relative;overflow:hidden;transition:.25s}
.subc:hover{border-color:var(--cyan);transform:translateY(-3px)}
.subc .ic{width:30px;height:30px;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:800;margin-bottom:8px;background:rgba(147,169,196,.14)}
.subc .ic.b1{background:rgba(147,169,196,.2);color:#C9D8EA}
.subc .ic.b2{background:rgba(240,185,11,.16);color:#F0B90B}
.subc .ic.b3{background:rgba(34,211,238,.16);color:var(--cyan)}
.subc .ic.b4{background:rgba(103,232,249,.14);color:var(--cyan2)}
.subc .nm{font-size:13px;font-weight:700;display:flex;justify-content:space-between;align-items:center}
.subc .nm .up{font-size:11px;font-weight:800;color:var(--cyan2)}
.subc .pr{font-family:'Courier New',monospace;font-weight:800;font-size:17px;margin-top:5px}
.subc .vl{font-size:10px;color:var(--dim);margin-top:5px}
.s1{grid-column:4/7;grid-row:1/2}
.s2{grid-column:4/7;grid-row:2/3}
.s3{grid-column:1/4;grid-row:3/4;margin-top:14px}
.s4{grid-column:4/7;grid-row:3/4;margin-top:14px}
/* ============ 资讯 ============ */ .news{background:var(--ocean2);padding:90px 4vw}
.news h2{font-size:30px;font-weight:900;text-align:center}
.news h2 .hl{color:var(--cyan)}
.news .sec-sub{text-align:center;color:var(--dim);font-size:13px;margin:14px auto 8px;max-width:600px}
.news .more{display:block;text-align:center;margin-top:34px;font-size:13px;color:var(--cyan)}
.news .more:hover{color:var(--cyan2)}
.newslist{max-width:880px;margin:44px auto 0}
.newsitem{display:flex;gap:18px;padding:18px 0;border-bottom:1px solid var(--line)}
.newsitem:last-child{border-bottom:none}
.newsitem .lamp{position:relative;width:14px;flex-shrink:0}
.newsitem .lamp::before{content:'';position:absolute;left:6px;top:6px;width:3px;height:100%;background:linear-gradient(180deg,var(--cyan),transparent)}
.newsitem .lamp i{position:absolute;top:4px;left:2px;width:11px;height:11px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan)}
.newsitem:nth-child(2n) .lamp i{background:var(--cyan2);box-shadow:0 0 12px var(--cyan2)}
.newsitem .txt b{font-size:15px;font-weight:700}
.newsitem .txt b:hover{color:var(--cyan)}
.newsitem .txt p{font-size:12px;color:var(--dim);margin-top:6px;line-height:1.7}
.newsitem .meta{margin-left:auto;text-align:right;font-size:11px;color:var(--dim);white-space:nowrap}
/* ============ CTA banner / footer ============ */ .ctab{background:linear-gradient(120deg,var(--ocean3),var(--ocean));border-top:1px solid var(--line);padding:70px 4vw;text-align:center}
.ctab h2{font-size:28px;font-weight:900}
.ctab h2 .hl{color:var(--cyan)}
.ctab p{color:var(--dim);font-size:13px;margin-top:12px}
.ctab .cta{justify-content:center}
.foot{border-top:1px solid var(--line);padding:34px 4vw;text-align:center;color:var(--dim);font-size:12px;line-height:2}
.foot .fl{color:var(--white);font-weight:700;letter-spacing:3px;font-size:13px}
.nav{position:sticky;top:0;z-index:99;display:flex;align-items:center;justify-content:space-between;padding:0 4vw;height:62px;background:rgba(5,13,28,.82);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.crumb{max-width:860px;margin:0 auto;padding:26px 24px 0;font-size:12px;color:var(--dim)}
.crumb a{color:var(--cyan)}
.crumb a:hover{color:var(--cyan2)}
.art{max-width:860px;margin:0 auto;padding:30px 24px 60px}
.art .tag{display:inline-block;font-size:11px;padding:4px 12px;border-radius:12px;background:rgba(34,211,238,.14);color:var(--cyan);letter-spacing:1px;margin-bottom:18px}
.art h1{font-size:32px;font-weight:900;line-height:1.45;letter-spacing:1px;margin-bottom:14px}
.art .meta{font-size:12px;color:var(--dim);padding-bottom:24px;border-bottom:1px solid var(--line);margin-bottom:30px}
.art h2{font-size:21px;font-weight:800;margin:36px 0 16px;padding-left:14px;border-left:4px solid var(--cyan);line-height:1.5}
.art p{font-size:15px;color:#C9D8EA;margin-bottom:18px}
.art .hlbox{border:1px solid var(--line);border-radius:14px;background:rgba(11,36,71,.5);padding:20px 24px;margin:26px 0;font-size:14px;color:var(--dim)}
.art .hlbox b{color:var(--cyan2)}
.art ul{padding-left:22px;margin-bottom:18px}
.art li{font-size:15px;color:#C9D8EA;margin-bottom:10px}
.art li b{color:var(--white)}
.cta2{max-width:860px;margin:0 auto 60px;text-align:center;border:1px solid var(--line);border-radius:16px;padding:34px 24px;background:linear-gradient(120deg,rgba(15,49,92,.6),rgba(8,26,51,.6))}
.cta2 h3{font-size:20px;font-weight:900;margin-bottom:8px}
.cta2 h3 .hl{color:var(--cyan)}
.cta2 p{font-size:12px;color:var(--dim);margin-bottom:20px}
.cta2 .btns{display:flex;gap:12px;justify-content:center}
.cta2 .btns a{font-size:14px;font-weight:700;padding:11px 26px;border-radius:24px}
.cta2 .btns .p{background:var(--cyan);color:#04121F}
.cta2 .btns .s{border:1px solid var(--cyan);color:var(--cyan)}
.rel{max-width:860px;margin:0 auto 60px}
.rel h3{font-size:14px;letter-spacing:3px;color:var(--cyan);margin-bottom:16px;display:flex;align-items:center;gap:10px}
.rel h3::after{content:'';flex:1;height:1px;background:var(--line)}
.rel .ritem{display:flex;justify-content:space-between;align-items:center;padding:14px 4px;border-bottom:1px dashed rgba(147,169,196,.18);font-size:14px}
.rel .ritem a:hover{color:var(--cyan)}
.rel .ritem .tm{font-size:11px;color:var(--dim);white-space:nowrap}
.list{max-width:900px;margin:0 auto;padding:30px 24px 50px}
.list .tag{display:inline-block;font-size:11px;padding:4px 12px;border-radius:12px;background:rgba(34,211,238,.14);color:var(--cyan);letter-spacing:1px;margin-bottom:18px}
.list h1{font-size:30px;font-weight:900;letter-spacing:1px;margin-bottom:8px}
.list .sub{font-size:13px;color:var(--dim);padding-bottom:24px;border-bottom:1px solid var(--line);margin-bottom:26px}
.list .intro,.list .outro{font-size:14px;color:#C9D8EA;line-height:2;margin-bottom:26px;padding:18px 22px;border:1px solid var(--line);border-radius:14px;background:rgba(11,36,71,.4)}
.list .outro{margin-top:8px;margin-bottom:0}
.lrow{display:flex;align-items:center;gap:16px;padding:18px 6px;border-bottom:1px solid var(--line)}
.lrow:hover .lt b{color:var(--cyan)}
.lrow .ld{width:9px;height:9px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px var(--cyan);flex-shrink:0}
.lrow .lt{flex:1}
.lrow .lt b{font-size:16px;font-weight:700;line-height:1.5}
.lrow .lt p{font-size:12px;color:var(--dim);margin-top:6px;line-height:1.7}
.lrow .lm{text-align:right;font-size:11px;color:var(--dim);white-space:nowrap}
.lrow .lm .tg{display:block;color:var(--cyan);margin-bottom:6px;letter-spacing:1px}
@media(min-width:901px){
  .hero .side{margin-right:300px}
}
@media(max-width:900px){
  .nav .links{display:none}
  .nav .btns a{font-size:11px;padding:6px 12px}
  .hero{flex-direction:column;padding-top:80px;gap:6px}
  .hero .stage{min-height:52vh;width:100%}
  .hero .side{max-width:100%;padding-bottom:20px}
  .hero h1{font-size:24px}
  .hero .sub{font-size:13px}
  .kicker{font-size:10px;letter-spacing:3px}
  .stats .st .n{font-size:18px}
  .nwrap{flex-direction:column}
  .nwrap .left{position:static}
  .route{flex-wrap:wrap;gap:14px;justify-content:center}
  .route .leg{flex-basis:60%}
  .vs{flex-direction:column}
  .cityrow .role{display:none}
  .cityrow .ct{width:auto}
  .snapgrid{grid-template-columns:1fr;grid-auto-rows:auto}
  .mainc{grid-column:auto;grid-row:auto}
  .s1,.s2,.s3,.s4{grid-column:auto;grid-row:auto;margin-top:0}
  .snap .sec-h h2{font-size:24px}
  .mainc .price{font-size:32px}
  .news .more{font-size:12px}
}
@media(max-width:900px){
  .nav .links{display:none}
  .nav .btns a{font-size:11px;padding:6px 12px}
  .art h1{font-size:24px}
  .art{padding:24px 18px 40px}
  .art p{font-size:14px}
}