:root{
  color-scheme:dark;
  --ink:#061018;
  --panel:#0d1b23;
  --panel2:#132820;
  --paper:#f7f3ec;
  --muted:#b7c4c8;
  --line:rgba(255,255,255,.14);
  --pink:#ec6f9d;
  --cyan:#24c6bd;
  --gold:#f2b84b;
  --green:#87c66d;
  --blue:#6c83ff;
  --shadow:0 26px 70px rgba(0,0,0,.34);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,"Noto Sans SC","PingFang SC",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--ink);color:var(--paper);line-height:1.7;letter-spacing:0;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px clamp(18px,4vw,64px);background:rgba(6,16,24,.88);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:11px;min-width:0}
.brand span{width:28px;height:28px;border-radius:50%;background:radial-gradient(circle at 35% 35%,var(--pink),transparent 35%),conic-gradient(from 120deg,var(--cyan),var(--gold),var(--pink),var(--cyan));box-shadow:0 0 24px rgba(236,111,157,.45)}
.brand b{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:1rem}
.navlinks{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.navlinks a{padding:8px 11px;border:1px solid transparent;color:#dbe7ea;border-radius:999px;font-size:.94rem}
.navlinks a:hover{border-color:rgba(236,111,157,.45);background:rgba(236,111,157,.1)}
.menu-button{display:none;background:rgba(255,255,255,.08);border:1px solid var(--line);color:var(--paper);border-radius:999px;padding:8px 14px;font:inherit}
.hero-shell{min-height:calc(100vh - 66px);display:grid;grid-template-columns:minmax(0,.86fr) minmax(360px,1.14fr);gap:34px;align-items:center;padding:clamp(34px,5vw,78px) clamp(18px,5vw,76px) 42px;background:radial-gradient(circle at 20% 15%,rgba(236,111,157,.22),transparent 28%),linear-gradient(145deg,#061018 0%,#0b1a20 48%,#14170f 100%)}
.hero-text{max-width:730px}
.mark{text-transform:uppercase;color:var(--cyan);font-weight:800;letter-spacing:.08em;font-size:.78rem;margin:0 0 14px}
h1,h2,h3,p{margin-top:0}
.hero-text h1{font-size:clamp(2.45rem,5vw,5.4rem);line-height:1.02;margin-bottom:22px;max-width:880px}
.lead{font-size:clamp(1.04rem,1.55vw,1.32rem);color:#d8e3e5;max-width:760px}
.hero-actions,.inline-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.hero-actions a,.inline-actions a,.callout-line a,.section-title a,.next-links a,.topic-wall a{border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.08);padding:11px 16px;border-radius:8px;color:#fff}
.hero-actions a:first-child,.callout-line a{background:linear-gradient(135deg,var(--pink),var(--gold));color:#12070c;border-color:transparent;font-weight:800}
.hero-photo{margin:0;position:relative;min-width:0}
.hero-photo img{border-radius:18px;box-shadow:var(--shadow);aspect-ratio:16/9;object-fit:cover;border:1px solid rgba(255,255,255,.16)}
.hero-photo figcaption{position:absolute;left:18px;right:18px;bottom:18px;display:flex;gap:10px;flex-wrap:wrap}
.hero-photo figcaption span{padding:6px 10px;border:1px solid rgba(255,255,255,.24);background:rgba(6,16,24,.72);border-radius:999px;color:#ecf4f5;font-size:.86rem}
.route-board{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border-block:1px solid var(--line)}
.route-board a{padding:24px clamp(18px,3vw,38px);background:#091720;min-height:132px;display:flex;flex-direction:column;justify-content:space-between}
.route-board b{font-size:1.08rem}
.route-board span{color:var(--muted);font-size:.96rem}
.signal-split{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:start;padding:70px clamp(18px,5vw,76px);background:var(--paper);color:#182025}
.signal-split p{color:#3b494f}
.signal-split h2,.section-title h2,.faq h2,.page-hero h1{font-size:clamp(2rem,3vw,3.35rem);line-height:1.1;margin-bottom:18px}
.signal-split .mark{color:#0f887f}
.rungs{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.rungs li{display:grid;grid-template-columns:58px 1fr;gap:10px;align-items:center;padding:18px;border:1px solid rgba(6,16,24,.14);background:#fffdf8;border-radius:12px}
.rungs span{grid-row:span 2;color:var(--pink);font-weight:900;font-size:1.5rem}
.rungs b{font-size:1.1rem}
.rungs em{font-style:normal;color:#5d686c}
.status-lane{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;padding:34px clamp(18px,5vw,76px);background:#0b1519}
.status-lane article{border:1px solid var(--line);border-radius:10px;padding:22px;background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.03))}
.status-lane p{color:var(--green);font-weight:800;margin-bottom:8px}
.status-lane h2{font-size:1.65rem;margin-bottom:8px}
.status-lane span{color:var(--muted)}
.article-river,.faq{padding:70px clamp(18px,5vw,76px)}
.section-title{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:24px}
.section-title a{font-size:.94rem}
.river-list{display:grid;gap:12px}
.river-list article{display:grid;grid-template-columns:72px 1fr;gap:18px;border-top:1px solid var(--line);padding:20px 0}
.river-list article>span{color:var(--gold);font-weight:900;font-size:1.5rem}
.river-list time,.topic-wall time,.article-body time{color:var(--cyan);font-size:.88rem}
.river-list h3{font-size:1.25rem;margin:4px 0}
.river-list p{color:var(--muted);margin:0}
.faq{display:grid;grid-template-columns:.75fr 1.25fr;gap:34px;background:#0e181c}
.faq details{border-top:1px solid var(--line);padding:17px 0}
.faq summary{cursor:pointer;font-weight:800;font-size:1.06rem}
.faq p{color:var(--muted);margin:10px 0 0}
.narrow{max-width:1180px;margin:0 auto;padding:58px clamp(18px,4vw,48px) 78px}
.page-hero{padding:38px 0 28px;border-bottom:1px solid var(--line);margin-bottom:32px}
.page-hero p{max-width:850px;color:#d4e1e3}
.page-hero .soft{color:#aebfc4}
.braid-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.braid-grid article{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:12px;padding:24px;background:linear-gradient(145deg,rgba(255,255,255,.08),rgba(255,255,255,.03))}
.braid-grid article span{display:inline-flex;color:var(--gold);font-weight:900;margin-bottom:16px}
.braid-grid h2{font-size:1.35rem;margin-bottom:10px}
.braid-grid p{color:var(--muted);margin:0}
.callout-line{margin-top:28px;padding:24px;border:1px solid rgba(236,111,157,.4);border-radius:14px;background:rgba(236,111,157,.1)}
.callout-line p{color:#d8e3e5}
.callout-line a{display:inline-flex;margin-top:6px}
.topic-wall{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.topic-wall article{border:1px solid var(--line);border-radius:12px;padding:20px;background:#0d1a22;min-height:250px}
.topic-wall article>span{display:inline-flex;color:var(--pink);font-weight:900;margin-bottom:10px}
.topic-wall h2{font-size:1.18rem;margin:9px 0}
.topic-wall p{color:var(--muted)}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:30px;max-width:1220px;margin:0 auto;padding:58px clamp(18px,4vw,48px) 82px}
.article-body{min-width:0}
.article-body h1{font-size:clamp(2rem,4vw,4rem);line-height:1.1;margin-bottom:18px}
.article-body section{border-top:1px solid var(--line);padding-top:24px;margin-top:26px}
.article-body p{color:#d6e2e5}
.article-summary{background:rgba(36,198,189,.08);border:1px solid rgba(36,198,189,.22)!important;border-radius:14px;padding:22px!important}
.article-summary ul{margin:0;padding-left:20px;color:#dbe8e9}
.table-box{overflow-x:auto}
table{width:100%;border-collapse:collapse;min-width:620px;background:#0c181e;border:1px solid var(--line)}
th,td{text-align:left;padding:13px 14px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:#fff;background:rgba(255,255,255,.07)}
td{color:#c8d8dc}
.next-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.article-side{position:sticky;top:96px;align-self:start;border:1px solid var(--line);border-radius:12px;padding:18px;background:#0c181f}
.article-side a{display:block;padding:11px 0;border-top:1px solid var(--line);color:#dce8ea}
.about-letter,.message-panel{border:1px solid var(--line);border-radius:14px;background:#0d1a22;padding:26px;margin-bottom:20px}
.about-letter p,.message-panel p{color:#d5e0e3}
.message-panel{display:grid;grid-template-columns:.82fr 1.18fr;gap:24px}
form{display:grid;gap:14px}
label{display:grid;gap:6px;color:#d9e6e8;font-weight:700}
input,textarea{width:100%;border:1px solid rgba(255,255,255,.18);border-radius:8px;background:#071217;color:#fff;padding:12px 13px;font:inherit}
button{justify-self:start;border:0;border-radius:8px;padding:11px 16px;background:linear-gradient(135deg,var(--cyan),var(--green));color:#031010;font:inherit;font-weight:900;cursor:pointer}
.soft{color:#aebfc4!important}
.site-footer{display:grid;grid-template-columns:.8fr 1.2fr;gap:30px;padding:36px clamp(18px,5vw,76px);border-top:1px solid var(--line);background:#050d13}
.footer-brand p{color:var(--muted);margin:8px 0 0;max-width:390px}
.footer-columns{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.footer-columns nav{display:grid;gap:8px}
.footer-columns b{color:var(--gold)}
.footer-columns a{color:#cfdadd;font-size:.95rem}
.page-missing{min-height:60vh}
.stamp{font-size:4rem;color:var(--pink);font-weight:900;margin-bottom:10px}
@media (max-width:960px){
  .menu-button{display:inline-flex}
  .navlinks{display:none;position:absolute;left:16px;right:16px;top:64px;padding:14px;background:#071218;border:1px solid var(--line);border-radius:14px}
  .navlinks.open{display:grid}
  .navlinks a{border-color:var(--line)}
  .hero-shell,.signal-split,.faq,.article-layout,.site-footer,.message-panel{grid-template-columns:1fr}
  .hero-shell{min-height:auto}
  .hero-text h1{font-size:2.55rem}
  .route-board,.status-lane,.topic-wall,.braid-grid,.footer-columns{grid-template-columns:1fr}
  .article-side{position:static}
}
@media (max-width:560px){
  .topbar{padding:13px 14px}
  .brand b{max-width:210px}
  .hero-shell{padding:28px 14px}
  .hero-text h1{font-size:2.14rem}
  .hero-photo figcaption{position:static;margin-top:10px}
  .route-board a{min-height:auto}
  .section-title{display:block}
  .river-list article{grid-template-columns:46px 1fr}
  .narrow,.article-layout{padding-inline:14px}
  th,td{padding:10px}
}