:root {
  --bg: #0c0d0f;
  --panel: #141618;
  --elev: #1b1e22;
  --line: #2c3138;
  --ash: #8b929a;
  --ink: #e8eaed;
  --live: #d6453d;
  --ok: #9aa0a6;
  --font-display: "Segoe UI", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "Consolas", "Cascadia Mono", "Microsoft YaHei", monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  background: var(--bg);
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.wrap { width: min(1120px, calc(100% - 2rem)); margin: 0 auto; }

.channel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--ash);
}
.channel .live {
  color: var(--live);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.channel .live::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--live);
  box-shadow: 0 0 0 3px rgba(214, 69, 61, 0.25);
}

.cmd-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0 1rem;
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-mono);
}
.brand-mark {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 1px solid var(--ink);
  font-size: 0.78rem;
  font-weight: 800;
}
.brand b { display: block; font-size: 0.95rem; letter-spacing: 0.12em; }
.brand small { display: block; color: var(--ash); font-size: 0.68rem; letter-spacing: 0.14em; }
.nav { display: flex; flex-wrap: wrap; gap: 0.9rem; }
.nav a {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--ash);
  letter-spacing: 0.06em;
}
.nav a.on, .nav a:hover { color: var(--ink); }
.cmd-link {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--line);
  color: var(--ink);
  white-space: nowrap;
}
.cmd-link:hover { border-color: var(--ink); }

/* Hero: sparse command block + feed viewport below — not dual-col */
.hero-cmd {
  padding: 2rem 0 1.2rem;
  border-bottom: 1px solid var(--line);
}
.cmd-block {
  max-width: 760px;
}
.cmd-block .tag {
  margin: 0 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--live);
}
.cmd-block h1 {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
}
.lead {
  margin: 0 0 1.2rem;
  color: var(--ash);
  font-size: 1.02rem;
  max-width: 38rem;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 148px;
  min-height: 44px;
  padding: 0.65rem 1.05rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
  word-break: keep-all;
  writing-mode: horizontal-tb;
  border: 1px solid var(--ink);
  transition: background 0.15s ease, color 0.15s ease;
}
.btn-fill {
  background: var(--ink);
  color: var(--bg);
}
.btn-fill:hover { background: #fff; }
.btn-line {
  background: transparent;
  color: var(--ink);
}
.btn-line:hover { background: var(--elev); }
.btn-live {
  background: var(--live);
  color: #fff;
  border-color: #a8322c;
}
.req {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.45rem;
  max-width: 440px;
}
.req p {
  margin: 0;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--line);
  background: var(--panel);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ash);
}
.req b { display: block; color: var(--ink); margin-bottom: 0.1rem; }

.feed {
  margin-top: 1.4rem;
  border: 1px solid var(--line);
  background: var(--panel);
}
.feed-bar {
  display: flex;
  justify-content: space-between;
  padding: 0.4rem 0.7rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ash);
  letter-spacing: 0.1em;
}
.hero-media {
  align-self: center;
  margin: 0;
  padding: 0;
  height: auto;
  overflow: visible;
}
.hero-media img,
.frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: center;
  margin: 0;
  padding: 0;
  min-height: 0;
  max-height: none;
  clip-path: none;
  transform: none;
}

.sec { padding: 2.6rem 0; border-bottom: 1px solid var(--line); }
.sec-h {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.1rem;
}
.sec-h h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
  letter-spacing: 0.04em;
}
.sec-h p { margin: 0; color: var(--ash); max-width: 34rem; font-size: 0.92rem; }
.k {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--ash);
}

/* Download as 4 vertical ops columns — not cards/table/rack/mosaic/contacts */
.ops-board {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--line);
}
.slot {
  padding: 1.1rem 0.95rem 1.15rem;
  background: var(--panel);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  min-height: 100%;
}
.slot:last-child { border-right: 0; }
.slot .code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--live);
}
.slot .os {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
}
.slot .meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--ash);
}
.slot .meta b { color: var(--ink); font-weight: 600; }
.slot .btn { margin-top: auto; width: 100%; }

/* Features as priority codes */
.priority {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  border: 1px solid var(--line);
}
.pri {
  padding: 1.05rem 0.85rem;
  border-right: 1px solid var(--line);
  background: var(--elev);
}
.pri:last-child { border-right: 0; }
.pri .lv {
  display: inline-block;
  margin-bottom: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--live);
  border: 1px solid rgba(214,69,61,0.45);
  padding: 0.15rem 0.4rem;
}
.pri h3 {
  margin: 0 0 0.3rem;
  font-size: 0.98rem;
  font-family: var(--font-display);
}
.pri p {
  margin: 0;
  color: var(--ash);
  font-size: 0.84rem;
}

/* Solution: image left / copy right */
.brief {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 0;
  border: 1px solid var(--line);
}
.brief .visual {
  background: var(--panel);
  border-right: 1px solid var(--line);
  padding: 0.75rem;
}
.brief .copy {
  padding: 1.35rem 1.2rem;
  background: var(--elev);
}
.brief .copy h2 {
  margin: 0.35rem 0 0.7rem;
  font-family: var(--font-display);
  font-size: 1.4rem;
}
.brief .copy p {
  margin: 0 0 0.75rem;
  color: var(--ash);
}
.gallery-stack {
  display: grid;
  gap: 0.55rem;
  margin-top: 0.75rem;
}
.frame {
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  background: #000;
}

/* Trust roster */
.roster {
  border: 1px solid var(--line);
  background: var(--panel);
}
.roster-head {
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--line);
}
.roster-head .big {
  margin: 0.25rem 0 0.35rem;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
}
.roster-head .big em { font-style: normal; color: var(--live); }
.roster-head p { margin: 0; color: var(--ash); }
.roster-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid var(--line);
}
.roster-row span {
  padding: 0.85rem 0.7rem;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  border-right: 1px solid var(--line);
}
.roster-row span:last-child { border-right: 0; }

.panel {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 1.1rem;
  margin-bottom: 0.75rem;
}
.help-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.55rem;
}
.help-grid details {
  border: 1px solid var(--line);
  background: var(--elev);
  padding: 0.7rem 0.8rem;
}
.help-grid summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  letter-spacing: 0.03em;
}
.help-grid p {
  margin: 0.4rem 0 0;
  color: var(--ash);
  font-size: 0.88rem;
}
.log article {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 0.75rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line);
}
.log article:last-child { border-bottom: 0; }
.log time {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ash);
}
.log h3 {
  margin: 0 0 0.2rem;
  font-size: 0.98rem;
  font-family: var(--font-display);
}
.log p { margin: 0; color: var(--ash); font-size: 0.88rem; }
.media-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.55rem;
  margin-top: 0.85rem;
}

.cta-cmd {
  margin: 1.2rem 0 2rem;
  border: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  background: var(--elev);
}
.cta-cmd .left {
  padding: 1.4rem 1.2rem;
  border-right: 1px solid var(--line);
}
.cta-cmd h2 {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
}
.cta-cmd p { margin: 0 0 1rem; color: var(--ash); }
.gains {
  margin: 0;
  padding: 1.15rem;
  list-style: none;
  display: grid;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
}
.gains li {
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--line);
  color: var(--ash);
}

.foot {
  padding: 1.1rem 0 1.8rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ash);
}
.foot-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem;
}
.foot a { color: var(--ink); }

@media (max-width: 980px) {
  .ops-board, .priority, .brief, .cta-cmd, .help-grid, .roster-row, .media-row, .log article { grid-template-columns: 1fr; }
  .slot, .pri, .roster-row span { border-right: 0; border-bottom: 1px solid var(--line); }
  .slot:last-child, .pri:last-child { border-bottom: 0; }
  .brief .visual { border-right: 0; border-bottom: 1px solid var(--line); }
  .cta-cmd .left { border-right: 0; border-bottom: 1px solid var(--line); }
  .nav { display: none; }
}
@media (max-width: 640px) {
  .req { grid-template-columns: 1fr; }
  .actions { flex-direction: column; }
  .btn { width: 100%; }
  .ops-board { grid-template-columns: 1fr 1fr; }
}

/* Hero final overrides */
.hero-cmd { align-items: center; }
.hero-media,
.frame {
  align-self: center;
  height: auto;
  margin-top: 0;
  margin-bottom: 0;
  overflow: visible;
}
.hero-media img,
.frame img {
  display: block !important;
  width: 100% !important;
  height: auto !important;
  object-fit: contain !important;
  object-position: center !important;
  margin: 0 !important;
  padding: 0 !important;
  min-height: 0 !important;
  max-height: none !important;
  clip-path: none !important;
  transform: none !important;
}
.btn {
  white-space: nowrap !important;
  word-break: keep-all !important;
  writing-mode: horizontal-tb !important;
}