/* ============================================================
   X SPACE · 中传创客空间
   BROADCAST BRUTALISM — S01 / 诚实门面版
   black · white · #FFD700
   ============================================================ */

:root {
  --bg:        #0a0a0a;
  --ink:       #f4f3ee;
  --mute:      rgba(244, 243, 238, 0.52);
  --faint:     rgba(244, 243, 238, 0.30);
  --line:      rgba(244, 243, 238, 0.18);
  --line-soft: rgba(244, 243, 238, 0.09);
  --yellow:    #ffd700;
  --yellow-ink:#0a0a0a;

  --en: "Space Grotesk", "Noto Sans SC", sans-serif;
  --cn: "Noto Sans SC", "Space Grotesk", sans-serif;
  --mono: "JetBrains Mono", "Space Grotesk", monospace;

  --pad: clamp(20px, 5.5vw, 84px);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--cn);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
::selection { background: var(--yellow); color: #000; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

/* ============================================================
   VIEWFINDER FRAME
   ============================================================ */
.frame { position: fixed; inset: 14px; border: 1px solid var(--line-soft); pointer-events: none; z-index: 70; }
.frame-tick { position: absolute; width: 11px; height: 11px; border: 0 solid var(--yellow); }
.frame-tick.tl { top: -1px; left: -1px; border-top-width: 2px; border-left-width: 2px; }
.frame-tick.tr { top: -1px; right: -1px; border-top-width: 2px; border-right-width: 2px; }
.frame-tick.bl { bottom: -1px; left: -1px; border-bottom-width: 2px; border-left-width: 2px; }
.frame-tick.br { bottom: -1px; right: -1px; border-bottom-width: 2px; border-right-width: 2px; }
.frame-label { position: absolute; font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.14em; color: var(--faint); white-space: nowrap; }
.fl-bl { bottom: 16px; left: 18px; }
.fl-br { bottom: 16px; right: 18px; color: var(--mute); }
.rec { color: var(--yellow); animation: blink 1.4s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ============================================================
   NAV BAR
   ============================================================ */
.bar {
  position: fixed; inset: 0 0 auto 0; z-index: 80;
  display: flex; align-items: center; gap: 28px;
  padding: 18px var(--pad);
  transition: background .4s var(--ease), padding .4s var(--ease), border-color .4s var(--ease);
  border-bottom: 1px solid transparent;
}
.bar.scrolled {
  background: rgba(10, 10, 10, 0.82);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line-soft); padding-block: 13px;
}
.wordmark { display: inline-flex; align-items: center; gap: 11px; white-space: nowrap; font-family: var(--en); font-weight: 700; font-size: 18px; letter-spacing: 0.04em; }
.wordmark-mark { width: 26px; height: 26px; display: block; }
.bar-nav { display: flex; gap: 30px; margin-left: auto; }
.bar-nav a { font-family: var(--mono); font-size: 13px; color: var(--mute); display: inline-flex; align-items: baseline; gap: 6px; white-space: nowrap; transition: color .25s var(--ease); }
.bar-nav a i { color: var(--faint); font-style: normal; font-size: 10px; transition: color .25s var(--ease); }
.bar-nav a:hover { color: var(--ink); }
.bar-nav a:hover i { color: var(--yellow); }
.bar-cta { font-family: var(--mono); font-size: 13px; color: var(--yellow-ink); background: var(--yellow); border: none; padding: 9px 16px; cursor: pointer; display: inline-flex; gap: 7px; white-space: nowrap; transition: transform .2s var(--ease), background .2s var(--ease); }
.bar-cta span { transition: transform .2s var(--ease); }
.bar-cta:hover span { transform: translateX(3px); }
.bar-cta:hover { background: #fff; }
.bar-toggle { display: none; flex-direction: column; gap: 6px; background: none; border: none; cursor: pointer; padding: 4px; }
.bar-toggle span { width: 26px; height: 2px; background: var(--ink); transition: transform .3s var(--ease), opacity .3s; }
.bar-toggle.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.bar-toggle.open span:nth-child(2) { transform: translateY(-8px) rotate(-45deg); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn { font-family: var(--cn); font-size: 15px; font-weight: 500; display: inline-flex; align-items: center; gap: 9px; padding: 14px 26px; border: 1px solid transparent; cursor: pointer; white-space: nowrap; transition: transform .2s var(--ease), background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease); }
.btn span { transition: transform .2s var(--ease); }
.btn:hover span { transform: translateX(4px); }
.btn-fill { background: var(--yellow); color: var(--yellow-ink); }
.btn-fill:hover { background: #fff; }
.btn-line { border-color: var(--line); color: var(--ink); }
.btn-line:hover { border-color: var(--ink); background: rgba(255,255,255,.04); }
.btn-dfill { background: #000; color: #fff; }
.btn-dfill:hover { background: #fff; color: #000; }

/* ============================================================
   HERO
   ============================================================ */
.hero { position: relative; min-height: 100svh; display: flex; flex-direction: column; justify-content: center; padding: 124px var(--pad) 0; overflow: hidden; }
.hero-ghost { position: absolute; right: -8vw; top: 50%; transform: translateY(-50%); width: 78vh; height: auto; opacity: 0.05; pointer-events: none; user-select: none; }
.hero-top { display: flex; justify-content: space-between; align-items: center; gap: 20px; font-family: var(--mono); font-size: 13px; color: var(--mute); letter-spacing: 0.02em; position: relative; z-index: 2; }
.hero-top > span { white-space: nowrap; }
.hero-top b { color: var(--ink); font-weight: 500; }
.hero-top .live { display: inline-flex; align-items: center; gap: 8px; color: var(--ink); }
.hero-top .live i { width: 7px; height: 7px; border-radius: 50%; background: var(--yellow); display: inline-block; animation: blink 1.4s steps(1) infinite; }
.hero-rule { height: 1px; background: var(--line); margin: 18px 0 clamp(24px, 5vh, 60px); transform-origin: left; }

.hero-main { display: grid; grid-template-columns: 1.35fr 1fr; gap: clamp(32px, 5vw, 72px); align-items: end; position: relative; z-index: 2; }
.hero-kicker { font-family: var(--mono); font-size: clamp(14px, 1.6vw, 17px); letter-spacing: 0.2em; color: var(--yellow); margin-bottom: 14px; }
.hero-title { font-family: var(--cn); font-weight: 900; font-size: clamp(3.2rem, 9vw, 7.5rem); line-height: 0.98; letter-spacing: -0.02em; }
.hero-title .hl { color: var(--yellow); }
.hero-tagline { font-size: clamp(1.05rem, 1.8vw, 1.4rem); color: var(--mute); margin-top: clamp(20px, 3vh, 34px); }

.hero-aside { padding-bottom: clamp(6px, 2vh, 20px); }
.hero-brand { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; }
.hero-mark { width: 56px; height: 56px; }
.hb-name { font-family: var(--en); font-weight: 700; font-size: 20px; letter-spacing: 0.03em; }
.hb-sub { font-family: var(--mono); font-size: 12px; color: var(--mute); letter-spacing: 0.18em; }
.hero-desc { color: var(--mute); font-size: 1rem; line-height: 1.65; padding-top: 20px; margin-bottom: 26px; border-top: 1px solid var(--line); }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.ticker { margin: clamp(40px, 7vh, 78px) calc(var(--pad) * -1) 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); overflow: hidden; position: relative; z-index: 2; }
.ticker-track { display: inline-flex; align-items: center; gap: 26px; white-space: nowrap; font-family: var(--mono); font-size: 14px; color: var(--mute); padding: 15px 0; animation: marquee 38s linear infinite; }
.ticker-track .x { color: var(--yellow); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ============================================================
   SECTION + LABELS
   ============================================================ */
.section { padding: clamp(80px, 11vw, 150px) var(--pad); position: relative; }
.sec-label { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-family: var(--mono); font-size: 13px; letter-spacing: 0.08em; }
.sec-idx { color: var(--yellow); white-space: nowrap; }
.sec-en { color: var(--faint); white-space: nowrap; }
.sec-rule { height: 1px; background: var(--line); margin-top: 16px; transform-origin: left; }
.sec-label.dark .sec-idx { color: #000; }
.sec-label.dark .sec-en { color: rgba(0,0,0,.45); }
.sec-rule.dark { background: rgba(0,0,0,.25); }

/* ============================================================
   ABOUT — manifesto + index list
   ============================================================ */
.manifesto { font-family: var(--cn); font-weight: 700; font-size: clamp(2.1rem, 6vw, 4.6rem); line-height: 1.32; letter-spacing: -0.02em; margin: clamp(56px, 8vw, 100px) 0; }
.manifesto p + p { margin-top: 0.4em; }
.manifesto .hl { color: #000; background-image: linear-gradient(var(--yellow), var(--yellow)); background-repeat: no-repeat; background-size: 100% 1.18em; background-position: 0 52%; padding: 0 0.14em; box-decoration-break: clone; -webkit-box-decoration-break: clone; }
.manifesto .strike { text-decoration: line-through; text-decoration-color: var(--yellow); text-decoration-thickness: 4px; color: var(--mute); }
.manifesto .sign { font-family: var(--mono); font-weight: 400; font-size: clamp(13px, 1.4vw, 16px); letter-spacing: 0.04em; color: var(--faint); margin-top: 0.8em; }

.index-list { border-top: 1px solid var(--line); }
.index-row { display: grid; grid-template-columns: 80px 1fr 1.1fr; gap: 24px; align-items: baseline; padding: 30px 8px; border-bottom: 1px solid var(--line); transition: background .35s var(--ease), padding-left .35s var(--ease), color .35s var(--ease); }
.index-row:hover { background: var(--yellow); color: #000; padding-left: 24px; }
.ir-num { font-family: var(--mono); font-size: 14px; color: var(--faint); }
.index-row:hover .ir-num { color: rgba(0,0,0,.6); }
.ir-title { font-family: var(--en); font-weight: 700; font-size: clamp(1.4rem, 3vw, 2.1rem); display: flex; flex-direction: column; }
.ir-title em { font-family: var(--mono); font-style: normal; font-size: 12px; font-weight: 400; color: var(--faint); letter-spacing: 0.06em; margin-top: 6px; }
.index-row:hover .ir-title em { color: rgba(0,0,0,.55); }
.ir-desc { color: var(--mute); font-size: 1rem; }
.index-row:hover .ir-desc { color: rgba(0,0,0,.75); }

/* ============================================================
   PILLARS — broadcast rundown
   ============================================================ */
.rundown { border-top: 1px solid var(--line); margin-top: clamp(40px, 6vw, 70px); }
.run-row { display: grid; grid-template-columns: 96px 1fr auto; gap: 30px; align-items: start; padding: 34px 8px; border-bottom: 1px solid var(--line); transition: background .35s var(--ease), padding-left .35s var(--ease), color .35s var(--ease); }
.run-row:hover { background: var(--yellow); color: #000; padding-left: 24px; }
.run-num { font-family: var(--en); font-weight: 700; font-size: clamp(2rem, 4vw, 3rem); color: var(--faint); line-height: 0.9; }
.run-row:hover .run-num { color: #000; }
.run-body h3 { font-family: var(--en); font-weight: 700; font-size: clamp(1.5rem, 3vw, 2.1rem); margin-bottom: 10px; }
.run-body p { color: var(--mute); font-size: 1rem; max-width: 60ch; }
.run-row:hover .run-body p { color: rgba(0,0,0,.78); }
.run-freq { font-family: var(--mono); font-size: 12.5px; color: var(--mute); border: 1px solid var(--line); padding: 6px 12px; white-space: nowrap; align-self: start; }
.run-row:hover .run-freq { border-color: #000; color: #000; }

.run-feature { background: var(--yellow); color: #000; padding: clamp(34px, 5vw, 56px); border-bottom: 1px solid var(--line); }
.rf-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; flex-wrap: wrap; }
.rf-num { font-family: var(--en); font-weight: 700; font-size: clamp(2.4rem, 6vw, 4.5rem); line-height: 0.85; }
.rf-flag { font-family: var(--mono); font-size: 13px; font-weight: 500; display: inline-flex; align-items: center; gap: 8px; }
.rf-flag .rec { color: #000; }
.run-feature h3 { font-family: var(--en); font-weight: 700; font-size: clamp(2rem, 5vw, 3.4rem); margin-bottom: 14px; letter-spacing: -0.02em; }
.run-feature > p { font-size: clamp(1rem, 1.6vw, 1.18rem); max-width: 70ch; }
.rf-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.rf-tags span { font-family: var(--mono); font-size: 13px; border: 1px solid #000; padding: 6px 13px; }

/* ============================================================
   ROADMAP
   ============================================================ */
.road { border-top: 1px solid var(--line); margin-top: clamp(40px, 6vw, 70px); }
.road-row { display: grid; grid-template-columns: 150px 1fr 1.3fr; gap: 28px; align-items: baseline; padding: 28px 8px; border-bottom: 1px solid var(--line); transition: padding-left .35s var(--ease); }
.road-row:hover { padding-left: 18px; }
.road-stat { font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.06em; color: var(--mute); border: 1px solid var(--line); padding: 6px 12px; justify-self: start; white-space: nowrap; }
.road-stat.now { color: var(--yellow-ink); background: var(--yellow); border-color: var(--yellow); }
.road-title { font-family: var(--en); font-weight: 700; font-size: clamp(1.3rem, 2.6vw, 1.9rem); }
.road-desc { color: var(--mute); font-size: 1rem; }

.gene { margin-top: clamp(44px, 7vw, 80px); }
.gene-label { font-family: var(--mono); font-size: 13px; color: var(--faint); letter-spacing: 0.1em; display: block; margin-bottom: 18px; }
.gene-marquee { border-block: 1px solid var(--line); overflow: hidden; margin-inline: calc(var(--pad) * -1); }
.gene-track { display: inline-flex; align-items: center; gap: 28px; white-space: nowrap; padding: 20px var(--pad); font-family: var(--en); font-weight: 700; font-size: clamp(1.4rem, 3vw, 2.4rem); color: var(--faint); animation: marquee 34s linear infinite; }
.gene-track b { color: var(--ink); }
.gene-track .d { color: var(--yellow); font-weight: 400; }

/* ============================================================
   JOIN — INVERTED (black on yellow)
   ============================================================ */
.join { background: var(--yellow); color: #000; }
.join-head { font-family: var(--en); font-weight: 700; font-size: clamp(2.8rem, 9vw, 7rem); letter-spacing: -0.03em; line-height: 0.9; margin: clamp(40px, 6vw, 70px) 0 clamp(36px, 5vw, 56px); display: flex; align-items: baseline; gap: 0.1em; }
.join-x { color: rgba(0,0,0,.35); }

.join-layout { display: grid; grid-template-columns: 2.4fr 1fr; gap: 0; border: 1px solid #000; }
.join-grid { display: grid; grid-template-columns: 1fr 1fr; }
.join-col { padding: clamp(28px, 3vw, 44px); position: relative; }
.join-col + .join-col { border-left: 1px solid #000; }
.jc-core { background: #000; color: var(--yellow); }
.jc-flag { position: absolute; top: 0; right: 0; white-space: nowrap; font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; background: var(--yellow); color: #000; padding: 6px 12px; }
.jc-head { display: flex; align-items: baseline; justify-content: space-between; gap: 14px; padding-bottom: 22px; margin-bottom: 24px; border-bottom: 1px solid currentColor; }
.jc-type { font-family: var(--en); font-weight: 700; font-size: clamp(1.6rem, 3vw, 2.2rem); white-space: nowrap; }
.jc-bar { font-family: var(--mono); font-size: 13px; white-space: nowrap; }
.jc-core .jc-bar { color: var(--yellow); }
.join-col ul { list-style: none; display: flex; flex-direction: column; gap: 13px; }
.join-col li { position: relative; padding-left: 22px; font-size: 1rem; }
.join-col li::before { content: "→"; position: absolute; left: 0; font-family: var(--mono); }
.jc-core li::before { color: var(--yellow); }

.join-cta { background: #000; color: var(--yellow); padding: clamp(28px, 3vw, 44px); border-left: 1px solid #000; display: flex; flex-direction: column; align-items: stretch; }
.jcta-label { font-family: var(--mono); font-size: 13px; letter-spacing: 0.08em; margin-bottom: 18px; }
.qr-slot { width: 100%; aspect-ratio: 1 / 1; background: #fff; border-radius: 8px; overflow: hidden; margin-bottom: 22px; }
.qr-slot img { width: 100%; height: 100%; object-fit: contain; padding: 14px; box-sizing: border-box; }
.jcta-btn { margin-top: auto; justify-content: center; background: var(--yellow); color: #000; }
.jcta-btn:hover { background: #fff; }

.depts { margin-top: clamp(40px, 5vw, 60px); }
.depts-label { font-family: var(--mono); font-size: 12px; color: rgba(0,0,0,.55); letter-spacing: 0.1em; display: block; margin-bottom: 16px; }
.depts-row { display: flex; flex-wrap: wrap; gap: 10px; }
.depts-row span { font-family: var(--mono); font-size: 14px; border: 1px solid #000; padding: 8px 16px; transition: background .25s var(--ease), color .25s var(--ease); }
.depts-row span:hover { background: #000; color: var(--yellow); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { padding: clamp(60px, 8vw, 110px) var(--pad) 40px; border-top: 1px solid var(--line); }
.foot-logo { width: clamp(220px, 36vw, 460px); height: auto; display: block; margin-bottom: clamp(40px, 6vw, 70px); }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; padding-bottom: 48px; border-bottom: 1px solid var(--line-soft); }
.fc-lead { color: var(--mute); font-size: 0.98rem; line-height: 1.7; max-width: 36ch; }
.foot-col h4 { font-family: var(--mono); font-size: 12px; color: var(--faint); letter-spacing: 0.08em; margin-bottom: 16px; font-weight: 400; }
.foot-col a { display: block; color: var(--mute); font-size: 0.96rem; padding: 5px 0; transition: color .2s var(--ease), padding-left .2s var(--ease); }
.foot-col a:hover { color: var(--yellow); padding-left: 5px; }
.foot-col .soon { display: block; color: var(--faint); font-size: 0.96rem; padding: 5px 0; }
.foot-base { display: flex; justify-content: space-between; gap: 16px; padding-top: 24px; font-family: var(--mono); font-size: 12.5px; color: var(--faint); }
.foot-base span { white-space: nowrap; }
.foot-base .rec { color: var(--yellow); }

/* ============================================================
   SCROLL REVEAL  (+ frozen-timeline fallback)
   ============================================================ */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease), transform .8s var(--ease); transition-delay: calc(var(--d, 0) * 75ms); }
.reveal.in { opacity: 1; transform: none; }
html.reveal-fallback .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .ticker-track, .gene-track, .rec, .hero-top .live i { animation: none; }
  html { scroll-behavior: auto; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 920px) {
  .hero-main { grid-template-columns: 1fr; gap: 36px; align-items: start; }
  .join-layout { grid-template-columns: 1fr; }
  .join-cta { border-left: none; border-top: 1px solid #000; flex-direction: row; align-items: flex-start; flex-wrap: wrap; gap: 0 24px; }
  .qr-slot { width: clamp(160px, 40vw, 220px); }
  .jcta-btn { margin-top: 18px; }
}
@media (max-width: 860px) {
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .fc-lead { grid-column: span 2; }
  .index-row { grid-template-columns: 50px 1fr; }
  .ir-desc { grid-column: 2; }
  .run-row { grid-template-columns: 60px 1fr; }
  .run-freq { grid-column: 2; justify-self: start; margin-top: 8px; }
  .road-row { grid-template-columns: 110px 1fr; }
  .road-desc { grid-column: 2; }
}
@media (max-width: 720px) {
  .bar-nav, .bar-cta { display: none; }
  .bar-toggle { display: flex; }
  .bar-nav { position: fixed; inset: 0 0 auto 0; top: 100%; flex-direction: column; gap: 0; margin: 0; padding: 10px var(--pad) 26px; background: rgba(10,10,10,0.97); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--line); transform: translateY(-10px); opacity: 0; pointer-events: none; transition: opacity .3s var(--ease), transform .3s var(--ease); }
  .bar-nav.open { display: flex; opacity: 1; transform: none; pointer-events: auto; }
  .bar-nav a { font-size: 19px; padding: 16px 0; border-bottom: 1px solid var(--line-soft); }
  .bar-nav a i { font-size: 12px; }
  .hero { padding-top: 116px; }
  .hero-top { font-size: 11px; flex-wrap: wrap; gap: 8px; }
  .hero-top > span { white-space: normal; }
  .join-grid { grid-template-columns: 1fr; }
  .join-col + .join-col { border-left: none; border-top: 1px solid #000; }
  .join-cta { flex-direction: column; }
  .qr-slot { width: 100%; max-width: 280px; }
  .foot-base { flex-direction: column; gap: 8px; }
}
@media (max-width: 460px) {
  .frame-label { font-size: 9px; }
  .road-row { grid-template-columns: 1fr; gap: 6px; }
  .road-desc { grid-column: 1; }
}