:root {
  --bg: #050505;
  --ink: #f6f1e4;
  --mute: #9e9586;
  --bean: #f5c400;
  --panel: #111111;
  --rail: 88px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

.rail {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--rail);
  z-index: 40;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  padding: 18px 10px;
  background: #0b0b0b;
  border-right: 1px solid rgba(245,196,0,.25);
}
.rail-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
  font-size: 12px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--bean);
}
.rail-brand img { width: 48px; height: 48px; border-radius: 12px; }
.rail-nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
  width: 100%;
}
.rail-nav a {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: .18em;
  font-size: 12px;
  color: var(--mute);
  padding: 10px 0;
  border-left: 2px solid transparent;
  margin: 0 auto;
}
.rail-nav a:hover,
.rail-nav a.is-on {
  color: var(--bean);
  border-left-color: var(--bean);
}
.rail-dl {
  width: 100%;
  text-align: center;
  background: var(--bean);
  color: #111;
  font-weight: 900;
  padding: 12px 0;
  border-radius: 8px;
}

.canvas {
  margin-left: var(--rail);
  min-height: 100svh;
}

.blast {
  min-height: 72svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 48px 8vw 32px;
  background:
    linear-gradient(90deg, rgba(245,196,0,.16), transparent 42%),
    #080808;
  border-bottom: 8px solid var(--bean);
}
.blast-kicker {
  margin: 0 0 12px;
  color: var(--bean);
  letter-spacing: .35em;
  font-size: 12px;
  font-weight: 700;
}
.blast h1 {
  margin: 0;
  font-size: clamp(42px, 8vw, 92px);
  line-height: .95;
  font-weight: 900;
  max-width: 10em;
}
.blast-line {
  margin: 18px 0 0;
  font-size: clamp(22px, 3vw, 36px);
  font-weight: 800;
}
.blast-line span {
  background: var(--bean);
  color: #111;
  padding: 0 10px;
}
.blast-lead {
  margin: 18px 0 0;
  max-width: 42em;
  color: #d9d0c0;
  line-height: 1.8;
  font-size: 16px;
}
.blast-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}
.pill-yellow, .pill-ghost {
  min-height: 48px;
  padding: 0 20px;
  display: inline-flex;
  align-items: center;
  font-weight: 800;
  border-radius: 999px;
}
.pill-yellow { background: var(--bean); color: #111; }
.pill-ghost { border: 1px solid var(--bean); color: var(--bean); }

.phones-drop {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  padding: 36px 8vw;
  background: #0a0a0a;
}
.phones-drop figure { margin: 0; text-align: center; }
.phones-drop img {
  width: min(100%, 260px);
  height: auto;
  margin: 0 auto;
  border-radius: 22px;
  border: 3px solid #2a2a2a;
  box-shadow: 0 18px 40px rgba(0,0,0,.45);
}
.phones-drop figcaption {
  margin-top: 10px;
  color: var(--mute);
  font-size: 13px;
}
.phones-drop figure:nth-child(2) { transform: translateY(28px); }

.flip { padding: 20px 0 40px; }
.flip-band {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 28px;
  align-items: center;
  padding: 40px 8vw;
}
.flip-band.invert {
  background: #101010;
  grid-template-columns: .9fr 1.1fr;
}
.flip-copy h2 {
  margin: 0 0 12px;
  font-size: clamp(26px, 3.4vw, 40px);
}
.flip-copy p {
  margin: 0;
  color: #d5ccbc;
  line-height: 1.85;
  font-size: 16px;
}
.shot { margin: 0; justify-self: center; }
.shot img {
  width: min(100%, 280px);
  height: auto;
  border-radius: 22px;
  border: 3px solid #2c2c2c;
  cursor: zoom-in;
}

.path {
  padding: 48px 8vw;
  background:
    repeating-linear-gradient(
      90deg,
      transparent 0 24px,
      rgba(245,196,0,.05) 24px 25px
    );
}
.path h2 {
  margin: 0 0 28px;
  font-size: clamp(26px, 3.4vw, 40px);
}
.path-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}
.path-list li {
  display: grid;
  grid-template-columns: 64px 1fr 160px;
  gap: 18px;
  align-items: center;
  background: var(--panel);
  border-left: 6px solid var(--bean);
  padding: 18px;
}
.path-list .num {
  font-size: 34px;
  font-weight: 900;
  color: var(--bean);
}
.path-list h3 { margin: 0 0 8px; }
.path-list p {
  margin: 0;
  color: var(--mute);
  line-height: 1.75;
}
.path-list img {
  width: 100%;
  height: auto;
  border-radius: 14px;
  border: 2px solid #2a2a2a;
  cursor: zoom-in;
}

.stack {
  padding: 48px 8vw 64px;
  text-align: center;
}
.stack h2 { margin: 0; font-size: clamp(26px, 3.4vw, 40px); }
.stack-note { color: var(--mute); margin: 10px 0 28px; }
.stack-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}
.stack-col figure { margin: 0; width: min(100%, 280px); }
.stack-col img {
  width: 100%;
  height: auto;
  border-radius: 22px;
  border: 3px solid #2c2c2c;
  cursor: zoom-in;
}
.stack-col figcaption {
  margin-top: 8px;
  color: var(--mute);
  font-size: 13px;
}

.wall {
  padding: 48px 8vw;
  background: #0d0d0d;
}
.wall h2 { margin: 0 0 22px; font-size: clamp(26px, 3.4vw, 40px); }
.wall-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 14px;
}
.wall-grid article {
  background: #151515;
  border-top: 3px solid var(--bean);
  padding: 16px;
}
.wall-grid .tall { grid-row: span 2; }
.wall-grid .wide { grid-column: 1 / -1; }
.wall-grid header {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--bean);
  font-size: 13px;
  margin-bottom: 8px;
}
.wall-grid p { margin: 0; line-height: 1.75; }

.ask { padding: 48px 8vw 72px; }
.ask-panel {
  background: var(--bean);
  color: #151515;
  padding: 28px;
  border-radius: 4px;
}
.ask-panel h2 { margin: 0 0 16px; }
.ask-panel details {
  border-top: 1px solid rgba(0,0,0,.18);
  padding: 12px 0;
}
.ask-panel summary {
  cursor: pointer;
  font-weight: 800;
  font-size: 17px;
}
.ask-panel p {
  margin: 8px 0 0;
  line-height: 1.75;
}

.end {
  padding: 24px 8vw 110px;
  color: var(--mute);
  border-top: 1px solid rgba(245,196,0,.2);
}
.end strong { color: var(--ink); }

.tabs {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 45;
  background: #0b0b0b;
  border-top: 1px solid rgba(245,196,0,.3);
  grid-template-columns: repeat(4, 1fr);
}
.tabs a {
  text-align: center;
  padding: 12px 4px;
  font-size: 13px;
  color: var(--mute);
}
.tabs-dl {
  background: var(--bean) !important;
  color: #111 !important;
  font-weight: 900;
}

.glass {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.9);
  display: grid;
  place-items: center;
  z-index: 60;
  padding: 24px;
}
.glass[hidden] { display: none; }
.glass img { max-height: 88vh; max-width: 92vw; object-fit: contain; }
.glass-close {
  position: absolute;
  top: 16px;
  right: 16px;
  border: 0;
  background: var(--bean);
  color: #111;
  font-weight: 800;
  padding: 8px 12px;
}

@media (max-width: 980px) {
  .rail { display: none; }
  .canvas { margin-left: 0; }
  .tabs { display: grid; }
  .blast {
    min-height: 70svh;
    padding: 28px 5vw 24px;
  }
  .blast h1 { font-size: clamp(40px, 13vw, 64px); }
  .phones-drop {
    grid-template-columns: 1fr;
    justify-items: center;
    padding: 24px 5vw;
  }
  .phones-drop figure:nth-child(2) { transform: none; }
  .phones-drop img { width: min(70vw, 280px); }
  .flip-band,
  .flip-band.invert {
    grid-template-columns: 1fr;
    padding: 28px 5vw;
  }
  .path, .stack, .wall, .ask, .end { padding-left: 5vw; padding-right: 5vw; }
  .path-list li {
    grid-template-columns: 48px 1fr;
  }
  .path-list img {
    grid-column: 1 / -1;
    width: min(56vw, 220px);
    justify-self: center;
  }
  .wall-grid { grid-template-columns: 1fr; }
  .wall-grid .tall, .wall-grid .wide { grid-row: auto; grid-column: auto; }
}