/* voyager.inasa.cn — 旅行者号专题站 */
:root{
  --bg:#05070d; --bg2:#0a0f1a; --panel:#0e1524; --line:#1c2740; --line2:#2a3858;
  --text:#dfe6f3; --muted:#8c99b3; --dim:#5d6a85;
  --gold:#e8b85a; --gold2:#f5d48f; --cyan:#6fd3ff; --green:#5fe3a1; --red:#ff6b6b;
  --mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",sans-serif;
  --serif:"Songti SC","STSong","Noto Serif CJK SC","Source Han Serif SC",SimSun,serif;
  --w:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:64px}
body{background:var(--bg);color:var(--text);font-family:var(--sans);line-height:1.75;font-size:16px;overflow-x:hidden}
a{color:var(--cyan);text-decoration:none}
a:hover{text-decoration:underline}
img,svg{max-width:100%;display:block}
::selection{background:var(--gold);color:#000}

#stars{position:fixed;inset:0;z-index:-1;width:100%;height:100%}

/* nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;height:56px;display:flex;align-items:center;gap:24px;padding:0 20px;
  background:rgba(5,7,13,.78);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:700;letter-spacing:.06em;white-space:nowrap}
.brand:hover{text-decoration:none}
.brand b{font-family:var(--mono);color:var(--gold)}
.nav ul{display:flex;gap:4px;list-style:none;overflow-x:auto;scrollbar-width:none;flex:1}
.nav ul::-webkit-scrollbar{display:none}
.nav ul a{display:block;padding:6px 10px;border-radius:6px;color:var(--muted);font-size:14px;white-space:nowrap}
.nav ul a:hover,.nav ul a.on{color:var(--text);background:var(--panel);text-decoration:none}
.nav .vger-link{margin-left:auto;font-family:var(--mono);font-size:13px;border:1px solid var(--gold);color:var(--gold);padding:5px 12px;border-radius:999px;white-space:nowrap}
.nav .vger-link:hover{background:var(--gold);color:#000;text-decoration:none}

/* layout */
section{padding:96px 20px;position:relative}
.wrap{max-width:var(--w);margin:0 auto}
.kicker{font-family:var(--mono);font-size:12px;letter-spacing:.2em;color:var(--gold);text-transform:uppercase;margin-bottom:10px}
h2{font-family:var(--serif);font-size:clamp(28px,4vw,44px);line-height:1.25;font-weight:700;margin-bottom:18px;letter-spacing:.02em}
h3{font-size:20px;margin-bottom:8px}
.lead{color:var(--muted);font-size:17px;max-width:760px;margin-bottom:40px}
p+p{margin-top:12px}
.muted{color:var(--muted)}
.mono{font-family:var(--mono)}
hr.sep{border:0;border-top:1px solid var(--line);margin:0}

/* hero */
.hero{min-height:100vh;display:flex;align-items:center;padding-top:96px}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.hero h1{font-family:var(--serif);font-size:clamp(40px,7vw,84px);line-height:1.08;letter-spacing:.02em;margin-bottom:20px}
.hero h1 span{display:block;font-family:var(--mono);font-size:clamp(13px,1.6vw,16px);letter-spacing:.42em;color:var(--gold);margin-bottom:18px;font-weight:400}
.hero p.intro{color:var(--muted);font-size:18px;max-width:560px}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:8px;border:1px solid var(--line2);color:var(--text);font-size:15px;background:var(--panel)}
.btn:hover{text-decoration:none;border-color:var(--gold)}
.btn.primary{background:var(--gold);color:#120d02;border-color:var(--gold);font-weight:600}
.btn.primary:hover{background:var(--gold2)}

/* telemetry */
.telemetry{border:1px solid var(--line2);border-radius:14px;background:linear-gradient(180deg,rgba(14,21,36,.92),rgba(8,12,22,.92));padding:20px;font-family:var(--mono)}
.tel-head{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted);letter-spacing:.12em;margin-bottom:14px}
.live{display:inline-flex;align-items:center;gap:6px;color:var(--green)}
.live i{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 8px var(--green);animation:pulse 1.6s infinite}
@keyframes pulse{50%{opacity:.25}}
.probe{padding:14px 0;border-top:1px dashed var(--line2)}
.probe:first-of-type{border-top:0;padding-top:0}
.probe-name{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:6px}
.probe-name b{color:var(--gold);font-size:15px;letter-spacing:.08em}
.probe-name small{color:var(--dim);font-size:11px}
.big{font-size:clamp(22px,3vw,30px);color:var(--text);letter-spacing:.01em;font-variant-numeric:tabular-nums}
.big small{font-size:13px;color:var(--muted);margin-left:6px}
.tel-row{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:10px}
.tel-row div{background:rgba(255,255,255,.025);border:1px solid var(--line);border-radius:8px;padding:8px 10px}
.tel-row label{display:block;font-size:10.5px;color:var(--dim);letter-spacing:.08em}
.tel-row span{font-size:14px;color:var(--cyan);font-variant-numeric:tabular-nums}
.tel-foot{margin-top:14px;font-size:11px;color:var(--dim);line-height:1.6}

/* countdown band */
.lightday{padding:56px 20px;background:linear-gradient(90deg,rgba(232,184,90,.08),rgba(111,211,255,.05));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.ld-grid{display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center}
.ld-grid h2{font-size:clamp(24px,3vw,34px);margin-bottom:8px}
.countdown{display:flex;gap:10px;font-family:var(--mono)}
.countdown div{min-width:84px;text-align:center;border:1px solid var(--gold);border-radius:10px;padding:10px 6px;background:rgba(0,0,0,.35)}
.countdown b{display:block;font-size:34px;color:var(--gold2);font-variant-numeric:tabular-nums;line-height:1.2}
.countdown small{font-size:11px;color:var(--muted);letter-spacing:.1em}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.stat{background:var(--bg2);padding:24px}
.stat b{display:block;font-family:var(--mono);font-size:30px;color:var(--gold2);line-height:1.2}
.stat span{color:var(--muted);font-size:14px}

/* cards */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:24px}
.card h3{color:var(--text)}
.card .tag{display:inline-block;font-family:var(--mono);font-size:11px;color:var(--gold);border:1px solid rgba(232,184,90,.4);border-radius:4px;padding:1px 7px;margin-bottom:10px;letter-spacing:.06em}
.card ul{padding-left:1.2em;color:var(--muted)}
.card li{margin:4px 0}
.card p{color:var(--muted)}

/* timeline */
.tl-filter{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:28px}
.tl-filter button{font:inherit;font-size:14px;color:var(--muted);background:var(--panel);border:1px solid var(--line2);border-radius:999px;padding:6px 14px;cursor:pointer}
.tl-filter button.on{color:#120d02;background:var(--gold);border-color:var(--gold)}
.timeline{position:relative;padding-left:28px}
.timeline:before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:linear-gradient(var(--gold),var(--cyan) 60%,var(--line2))}
.ev{position:relative;padding:0 0 26px}
.ev:before{content:"";position:absolute;left:-26px;top:8px;width:12px;height:12px;border-radius:50%;background:var(--bg);border:2px solid var(--gold)}
.ev.v2:before{border-color:var(--cyan)}
.ev.eng:before{border-color:var(--red)}
.ev time{font-family:var(--mono);font-size:13px;color:var(--gold)}
.ev.v2 time{color:var(--cyan)}
.ev.eng time{color:var(--red)}
.ev h4{font-size:17px;margin:2px 0 4px}
.ev p{color:var(--muted);font-size:15px;max-width:820px}
.ev .who{font-family:var(--mono);font-size:11px;color:var(--dim);margin-left:8px}
.ev.hide{display:none}

/* planets */
.planet-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}
.planet-tabs button{font:inherit;cursor:pointer;display:flex;align-items:center;gap:10px;background:var(--panel);border:1px solid var(--line2);border-radius:10px;padding:10px 16px;color:var(--muted)}
.planet-tabs button i{width:18px;height:18px;border-radius:50%;display:block}
.planet-tabs button.on{border-color:var(--gold);color:var(--text)}
.planet-panel{display:none;grid-template-columns:280px 1fr;gap:32px;align-items:start}
.planet-panel.on{display:grid}
.planet-orb{aspect-ratio:1;border-radius:50%;position:relative}
.planet-facts{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:16px 0}
.planet-facts div{border:1px solid var(--line);border-radius:8px;padding:10px 12px;background:var(--bg2)}
.planet-facts label{display:block;font-size:12px;color:var(--dim)}
.planet-facts span{font-family:var(--mono);font-size:14px;color:var(--cyan)}
.finds li{margin:6px 0;color:var(--muted)}
.finds li b{color:var(--text);font-weight:600}

/* table */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px}
table{width:100%;border-collapse:collapse;font-size:14.5px;min-width:720px}
th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--muted);background:var(--bg2);font-weight:500}
tr:last-child td{border-bottom:0}
td .s{font-family:var(--mono);font-size:12px;white-space:nowrap;padding:2px 8px;border-radius:4px}
.s.on{color:var(--green);background:rgba(95,227,161,.1);border:1px solid rgba(95,227,161,.35)}
.s.off{color:var(--dim);background:rgba(255,255,255,.03);border:1px solid var(--line2)}
td small{color:var(--dim)}

/* figure */
figure{margin:0}
figcaption{font-size:13px;color:var(--dim);margin-top:10px}
.figbox{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}

/* record */
.record-grid{display:grid;grid-template-columns:380px 1fr;gap:44px;align-items:start}
.greet{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:20px}
.greet div{border-left:2px solid var(--gold);padding:6px 12px;background:rgba(232,184,90,.05);border-radius:0 8px 8px 0}
.greet b{font-size:12px;color:var(--gold);font-family:var(--mono);letter-spacing:.06em}
.greet p{font-family:var(--serif);font-size:15px;margin-top:2px}

/* quote */
.pbd{text-align:center;padding:120px 20px;background:radial-gradient(ellipse at 50% 60%,rgba(111,140,255,.10),transparent 60%)}
.pbd .beam{max-width:760px;margin:0 auto 36px}
.pbd blockquote{font-family:var(--serif);font-size:clamp(20px,2.6vw,28px);line-height:1.7;max-width:820px;margin:0 auto}
.pbd cite{display:block;margin-top:18px;color:var(--muted);font-style:normal;font-size:14px}

/* faq */
details{border:1px solid var(--line);border-radius:10px;background:var(--panel);padding:0 18px;margin-bottom:10px}
summary{cursor:pointer;padding:16px 0;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:12px}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";font-family:var(--mono);color:var(--gold);font-size:20px;line-height:1}
details[open] summary:after{content:"−"}
details p{color:var(--muted);padding-bottom:16px}

/* people */
.person{display:flex;gap:14px}
.person .av{flex:none;width:52px;height:52px;border-radius:50%;display:grid;place-items:center;font-family:var(--serif);font-size:20px;background:linear-gradient(135deg,#2a3858,#0e1524);border:1px solid var(--line2);color:var(--gold2)}

/* VGER band */
.vger-band{background:linear-gradient(135deg,#120d02,#1a1205 40%,#05070d);border-top:1px solid rgba(232,184,90,.3);border-bottom:1px solid rgba(232,184,90,.3)}
.vger-band h2 b{font-family:var(--mono);color:var(--gold)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 26px}
.chips button{font:inherit;font-size:14px;cursor:pointer;color:var(--text);background:rgba(255,255,255,.04);border:1px solid var(--line2);border-radius:999px;padding:7px 14px}
.chips button:hover{border-color:var(--gold);color:var(--gold2)}

/* footer */
footer{padding:48px 20px 80px;border-top:1px solid var(--line);color:var(--dim);font-size:13.5px}
footer .wrap{display:grid;grid-template-columns:2fr 1fr;gap:32px}
footer ol{padding-left:1.3em}
footer li{margin:3px 0}
footer a{color:var(--muted)}

/* reveal */
.rv{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

/* responsive */
@media (max-width:960px){
  .hero-grid,.record-grid,.ld-grid{grid-template-columns:1fr}
  .grid3{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:1fr 1fr}
  .planet-panel{grid-template-columns:1fr}
  .planet-orb{max-width:220px}
  footer .wrap{grid-template-columns:1fr}
}
@media (max-width:640px){
  section{padding:72px 16px}
  .nav{padding:0 12px;gap:12px}
  .nav ul{display:none}
  .grid2,.grid3{grid-template-columns:1fr}
  .tel-row{grid-template-columns:repeat(3,1fr);gap:6px}
  .tel-row div{padding:7px 8px}
  .tel-row span{font-size:12.5px}
  .big{font-size:21px}
  .countdown div{min-width:0;flex:1}
  .countdown b{font-size:24px}
  .greet{grid-template-columns:1fr}
  .planet-facts{grid-template-columns:1fr 1fr}
  .stat b{font-size:24px}
}