/* =========================================================================
   NOVAYARD — 02 / SECTIONS
   Hero · 序章 · 能力 · 舰队 · 架构 · 指标 · 任务 · 记录 · 人 · FAQ · 联系 · 页脚
   ========================================================================= */

/* =====================================================================
   HERO
   ===================================================================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  padding-top: var(--nav-h);
  overflow: hidden;
  background: radial-gradient(120% 100% at 50% 0%, #081018 0%, #03050a 55%);
}

.hero__stage { position: absolute; inset: 0; z-index: 0; }
#gl { width: 100%; height: 100%; display: block; }

/* WebGL 不可用时的后备：CSS 星空 + 光晕 */
.hero__fallback {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.8s;
  background:
    radial-gradient(60% 50% at 62% 42%, rgba(61, 123, 255, 0.18), transparent 70%),
    radial-gradient(40% 40% at 30% 70%, rgba(138, 107, 255, 0.12), transparent 70%),
    radial-gradient(1.2px 1.2px at 20% 30%, #fff, transparent),
    radial-gradient(1px 1px at 70% 60%, #cfe8ff, transparent),
    radial-gradient(1px 1px at 45% 20%, #fff, transparent),
    radial-gradient(1.4px 1.4px at 88% 28%, #9fd4ff, transparent);
  background-size: auto, auto, 420px 420px, 360px 360px, 520px 520px, 640px 640px;
}
body.no-webgl .hero__fallback { opacity: 1; }

.hero__vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(74% 62% at 50% 46%, transparent 32%, rgba(3, 5, 10, 0.72) 100%),
    linear-gradient(to top, var(--void-0) 2%, rgba(3, 5, 10, 0.72) 22%, transparent 52%),
    linear-gradient(to right, rgba(3, 5, 10, 0.86) 0%, transparent 46%);
}

/* 扫描线：极淡的 CRT 质感 */
.hero__scan {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.5;
  background: repeating-linear-gradient(
    to bottom,
    rgba(180, 220, 255, 0.035) 0px,
    rgba(180, 220, 255, 0.035) 1px,
    transparent 1px,
    transparent 4px
  );
  mix-blend-mode: overlay;
}

.hero__corners i {
  position: absolute;
  width: 26px; height: 26px;
  border: 1px solid rgba(158, 190, 220, 0.22);
  pointer-events: none;
}
.hero__corners i:nth-child(1) { top: calc(var(--nav-h) + 18px); left: var(--gutter); border-right: 0; border-bottom: 0; }
.hero__corners i:nth-child(2) { top: calc(var(--nav-h) + 18px); right: var(--gutter); border-left: 0; border-bottom: 0; }
.hero__corners i:nth-child(3) { bottom: 76px; left: var(--gutter); border-right: 0; border-top: 0; }
.hero__corners i:nth-child(4) { bottom: 76px; right: var(--gutter); border-left: 0; border-top: 0; }

.hero__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter) clamp(4.5rem, 8vh, 7rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 330px);
  gap: clamp(1.6rem, 4vw, 4rem);
  align-items: end;
}

.hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--txt-2);
  font-size: 0.6rem;
  margin-bottom: clamp(1.1rem, 2.4vh, 2rem);
}
.hero__kicker .dot {
  width: 5px; height: 5px;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
  animation: pulse 2.4s ease-in-out infinite;
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--t-hero);
  font-weight: 400;
  line-height: 0.98;
  letter-spacing: -0.045em;
  color: var(--white);
  text-wrap: balance;
}
.hero__title .line { display: block; overflow: hidden; }
.hero__title .line > span {
  display: block;
  transform: translate3d(0, 108%, 0) rotate(2.4deg);
  opacity: 0;
  transition: transform 1.25s var(--e-out), opacity 0.9s var(--e-out);
}
body.is-ready .hero__title .line > span { transform: none; opacity: 1; }
body.is-ready .hero__title .line:nth-child(1) > span { transition-delay: 0.05s; }
body.is-ready .hero__title .line:nth-child(2) > span { transition-delay: 0.14s; }
body.is-ready .hero__title .line:nth-child(3) > span { transition-delay: 0.23s; }
body.is-ready .hero__title .line:nth-child(4) > span { transition-delay: 0.32s; }

.hero__title .is-energy {
  position: relative;
  background: linear-gradient(96deg, #9ffff0 0%, var(--cyan) 30%, #8fbcff 72%, var(--blue) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 34px rgba(46, 230, 200, 0.22));
}

.hero__sub {
  margin-top: clamp(1.3rem, 2.6vh, 2.1rem);
  max-width: 47ch;
  color: var(--txt-2);
  font-size: clamp(0.9rem, 1.02vw, 1.02rem);
  line-height: 1.9;
}
.hero__sub strong { color: var(--titanium); font-weight: 500; }

.hero__cta { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: clamp(1.6rem, 3vh, 2.4rem); }

/* 首屏滚出时的淡出（由 JS 写入 --hero-out） */
.hero__inner {
  opacity: calc(1 - var(--hero-out, 0) * 0.9);
  transform: translate3d(0, calc(var(--hero-out, 0) * -46px), 0);
}

.hero__ticker {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  z-index: 3;
  padding: 0.72rem 0;
  border-top: 1px solid var(--line);
  background: rgba(4, 7, 12, 0.62);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.hero__scroll {
  position: absolute;
  left: 50%;
  bottom: 62px;
  transform: translateX(-50%);
  z-index: 3;
  display: grid;
  justify-items: center;
  gap: 0.55rem;
  color: var(--txt-3);
  font-size: 0.52rem;
  transition: color 0.3s;
}
.hero__scroll:hover { color: var(--cyan); }
.hero__scroll i {
  display: block;
  width: 1px; height: 34px;
  background: linear-gradient(to bottom, var(--cyan), transparent);
  animation: scrollHint 2.4s var(--e-in-out) infinite;
  transform-origin: top;
}
@keyframes scrollHint {
  0% { transform: scaleY(0); opacity: 0; }
  35% { transform: scaleY(1); opacity: 1; }
  100% { transform: scaleY(1) translateY(34px); opacity: 0; }
}

/* =====================================================================
   序章
   ===================================================================== */
.manifesto {
  position: relative;
  padding: var(--sec-y) 0 clamp(3rem, 6vw, 5rem);
  background: linear-gradient(to bottom, var(--void-0), var(--void-1) 40%, var(--void-0));
  border-top: 1px solid var(--line);
}

.manifesto__grid {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}

.manifesto__lead .h2 { margin-bottom: clamp(1.4rem, 2.6vw, 2.2rem); }
.manifesto__lead .h2 em { font-style: normal; }

.manifesto__copy { display: grid; gap: 1.05rem; max-width: 54ch; }
.manifesto__copy p { color: var(--txt-2); font-size: 0.95rem; line-height: 1.95; }
.manifesto__copy strong { color: var(--titanium); font-weight: 500; }

.manifesto__sig { margin-top: 2.2rem; display: grid; gap: 0.2rem; }
.manifesto__sig-line {
  width: 42px; height: 1px;
  background: var(--cyan);
  margin-bottom: 0.9rem;
  box-shadow: 0 0 10px rgba(46, 230, 200, 0.7);
}
.manifesto__sig p { font-size: 0.58rem; color: var(--txt-2); letter-spacing: 0.14em; }
.manifesto__sig p.dim { color: var(--txt-4); font-size: 0.52rem; }

/* 图纸框 */
.figure-frame {
  position: relative;
  border: 1px solid var(--line);
  background:
    linear-gradient(145deg, rgba(16, 26, 38, 0.5), rgba(4, 7, 12, 0.2)),
    radial-gradient(70% 70% at 50% 40%, rgba(46, 230, 200, 0.05), transparent 70%);
  padding: 1rem;
  overflow: hidden;
}
.figure-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(120, 170, 200, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(120, 170, 200, 0.055) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(70% 70% at 50% 50%, #000, transparent 82%);
  pointer-events: none;
}
.figure-frame__label,
.figure-frame__meta {
  display: flex;
  justify-content: space-between;
  color: var(--txt-4);
  font-size: 0.52rem;
  letter-spacing: 0.14em;
  position: relative;
  z-index: 2;
}
.figure-frame__label { padding-bottom: 0.7rem; }
.figure-frame__meta { padding-top: 0.7rem; border-top: 1px solid var(--line); }

.figure-svg { width: 100%; height: auto; position: relative; z-index: 1; }
.fig-draw path,
.fig-draw circle {
  stroke-dasharray: 900;
  stroke-dashoffset: 900;
  transition: stroke-dashoffset 2.6s var(--e-in-out);
}
figure.is-in .fig-draw path,
figure.is-in .fig-draw circle { stroke-dashoffset: 0; }
.fig-rot { animation: figSpin 46s linear infinite; }

@keyframes figSpin { to { transform: rotate(360deg); } }

/* KPI 条 */
.kpi-strip {
  max-width: var(--wrap);
  margin: clamp(3rem, 6vw, 5rem) auto 0;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
}
.kpi-strip li {
  padding: 2rem 1.4rem 0 0;
  display: grid;
  gap: 0.45rem;
  position: relative;
}
.kpi-strip li + li { padding-left: 1.6rem; border-left: 1px solid var(--line); }
.kpi-strip b {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.1vw, 2.9rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--white);
  font-variant-numeric: tabular-nums;
}
.kpi-strip span { font-size: 0.72rem; color: var(--txt-3); letter-spacing: 0.02em; }

/* =====================================================================
   核心能力
   ===================================================================== */
.capability {
  position: relative;
  padding: var(--sec-y) 0;
  background: var(--void-0);
  border-top: 1px solid var(--line);
}

.caps {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  border-top: 1px solid var(--line);
}

.cap { border-bottom: 1px solid var(--line); position: relative; }
.cap::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(46, 230, 200, 0.05), transparent 42%);
  opacity: 0;
  transition: opacity 0.5s var(--e-soft);
  pointer-events: none;
}
.cap:hover::before,
.cap.is-open::before { opacity: 1; }

.cap__head {
  width: 100%;
  display: grid;
  grid-template-columns: 3.6rem minmax(0, 1fr) auto 1.6rem;
  align-items: center;
  gap: clamp(0.8rem, 2vw, 2rem);
  padding: clamp(1.35rem, 2.4vw, 2rem) 0;
  text-align: left;
  position: relative;
  z-index: 1;
}

.cap__num {
  font-size: 0.62rem;
  color: var(--txt-4);
  transition: color 0.4s;
}
.cap:hover .cap__num,
.cap.is-open .cap__num { color: var(--cyan); }

.cap__title {
  display: grid;
  gap: 0.28rem;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.1vw, 1.85rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--txt-1);
  transition: color 0.4s, transform 0.55s var(--e-out);
}
.cap__title em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.22em;
  color: var(--txt-4);
  transition: color 0.4s;
}
.cap:hover .cap__title { color: var(--white); transform: translateX(6px); }
.cap:hover .cap__title em { color: var(--cyan-dim); }

.cap__spec {
  font-size: 0.58rem;
  color: var(--txt-3);
  white-space: nowrap;
  transition: color 0.4s;
}

.cap__icon {
  width: 22px; height: 22px;
  border: 1px solid var(--line-mid);
  position: relative;
  justify-self: end;
  transition: border-color 0.4s, transform 0.5s var(--e-spring);
}
.cap__icon i,
.cap__icon i::after {
  position: absolute;
  background: var(--txt-2);
  transition: transform 0.45s var(--e-out), background-color 0.4s;
}
.cap__icon i { top: 50%; left: 6px; right: 6px; height: 1px; transform: translateY(-50%); }
.cap__icon i::after { content: ""; left: 50%; top: -6px; width: 1px; height: 13px; transform: translateX(-50%); }
.cap.is-open .cap__icon { border-color: var(--cyan); transform: rotate(90deg); }
.cap.is-open .cap__icon i::after { transform: translateX(-50%) scaleY(0); }
.cap.is-open .cap__icon i { background: var(--cyan); }

.cap__panel { overflow: hidden; height: 0; transition: height 0.6s var(--e-in-out); position: relative; z-index: 1; }
.cap__panel[hidden] { display: block; }
.cap__panel-in {
  padding: 0 0 2rem 3.6rem;
  max-width: 82ch;
  display: grid;
  gap: 0.2rem;
}
.cap__panel-in p { color: var(--txt-2); font-size: 0.94rem; line-height: 1.95; }

/* =====================================================================
   舰队
   ===================================================================== */
.fleet {
  padding: var(--sec-y) 0;
  background:
    radial-gradient(80% 60% at 78% 18%, rgba(61, 123, 255, 0.07), transparent 68%),
    var(--void-1);
  border-top: 1px solid var(--line);
}

.fleet__shell {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.fleet__tabs {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--line);
  border-bottom: 0;
  background: rgba(255, 255, 255, 0.012);
}
.fleet__tab {
  display: grid;
  gap: 0.15rem;
  padding: 1.15rem 1.4rem;
  text-align: left;
  color: var(--txt-2);
  position: relative;
  transition: color 0.35s, background-color 0.4s;
}
.fleet__tab + .fleet__tab { border-left: 1px solid var(--line); }
.fleet__tab .mono { font-size: 0.52rem; color: var(--txt-4); transition: color 0.35s; }
.fleet__tab b {
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.45vw, 1.25rem);
  font-weight: 500;
  letter-spacing: 0.01em;
}
.fleet__tab i { font-style: normal; font-size: 0.7rem; color: var(--txt-4); letter-spacing: 0.04em; }
.fleet__tab:hover { color: var(--txt-1); background: rgba(255, 255, 255, 0.02); }
.fleet__tab.is-active { color: var(--white); background: rgba(46, 230, 200, 0.045); }
.fleet__tab.is-active .mono { color: var(--cyan); }
.fleet__tab.is-active i { color: var(--txt-2); }

.fleet__tab-ind {
  position: absolute;
  bottom: -1px;
  height: 1px;
  background: var(--cyan);
  box-shadow: 0 0 14px rgba(46, 230, 200, 0.8);
  transition: left 0.55s var(--e-out), width 0.55s var(--e-out);
  width: 33.3333%;
  left: 0;
}

.fleet__stage {
  position: relative;
  border: 1px solid var(--line);
  background:
    radial-gradient(60% 80% at 30% 40%, rgba(46, 230, 200, 0.045), transparent 70%),
    linear-gradient(160deg, rgba(12, 20, 30, 0.9), rgba(4, 7, 12, 0.9));
  overflow: hidden;
}
.fleet__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(120, 170, 200, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(120, 170, 200, 0.05) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(to bottom, #000, transparent 92%);
  pointer-events: none;
}

.fleet__panel {
  display: none;
  position: relative;
  min-height: clamp(400px, 40vw, 500px);
  z-index: 1;
}
.fleet__panel.is-active { display: block; animation: panelIn 0.7s var(--e-out) both; }
@keyframes panelIn {
  from { opacity: 0; transform: translateY(14px); }
}

/* 图纸铺满整个舞台，参数卡悬浮于右侧 —— 比“左图右文”更有工程图纸的空间感 */
.fleet__visual {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: clamp(2rem, 3.6vw, 3.4rem);
  padding-right: clamp(2rem, 30vw, 34rem);
}
.ship-svg {
  width: 100%;
  max-width: 760px;
  height: auto;
  overflow: visible;
  opacity: 0.7;
  filter: drop-shadow(0 0 26px rgba(46, 230, 200, 0.18));
}
.ship-lines path {
  fill: none;
  stroke: rgba(46, 230, 200, 0.55);
  stroke-width: 1;
  filter: drop-shadow(0 0 6px rgba(46, 230, 200, 0.35));
  stroke-dasharray: 1600;
  stroke-dashoffset: 1600;
  animation: shipDraw 2.2s var(--e-in-out) forwards;
}
.ship-lines path:nth-child(2) { animation-delay: 0.18s; }
.ship-lines path:nth-child(3) { animation-delay: 0.26s; }
.ship-lines path:nth-child(4) { animation-delay: 0.34s; }
.ship-lines path:nth-child(5) { animation-delay: 0.42s; }
.ship-lines path:nth-child(6) { animation-delay: 0.5s; }
@keyframes shipDraw { to { stroke-dashoffset: 0; } }

.ship-ticks path { fill: none; stroke: rgba(158, 190, 220, 0.22); stroke-width: 1; }
.ship-dots circle { fill: var(--cyan); filter: drop-shadow(0 0 6px var(--cyan)); }

.fleet__tag {
  position: absolute;
  left: clamp(1.2rem, 2.4vw, 2rem);
  top: clamp(0.9rem, 1.8vw, 1.4rem);
  right: clamp(1.2rem, 2.4vw, 2rem);
  max-width: 46%;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--txt-4);
  font-size: 0.52rem;
}

.fleet__specs {
  position: relative;
  z-index: 2;
  width: min(430px, 44%);
  min-height: clamp(400px, 40vw, 500px);
  margin-left: auto;
  padding: clamp(1.5rem, 2.6vw, 2.4rem);
  display: grid;
  align-content: center;
  background: linear-gradient(200deg, rgba(10, 17, 26, 0.94), rgba(5, 9, 14, 0.86));
  border-left: 1px solid var(--line-mid);
  backdrop-filter: blur(14px) saturate(130%);
  -webkit-backdrop-filter: blur(14px) saturate(130%);
  box-shadow: -40px 0 80px -40px rgba(0, 0, 0, 0.9);
}

.fleet__specs h3 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  font-weight: 500;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.6rem;
  letter-spacing: 0.01em;
}
.fleet__specs h3 em { font-style: normal; font-size: 0.56rem; color: var(--txt-3); letter-spacing: 0.2em; }
.fleet__specs > p {
  margin-top: 0.9rem;
  color: var(--txt-2);
  font-size: 0.9rem;
  line-height: 1.9;
}

.spec-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin-top: 1.5rem;
  background: var(--line);
  border: 1px solid var(--line);
}
.spec-list > div {
  background: rgba(8, 13, 20, 0.72);
  padding: 0.8rem 0.9rem;
  display: grid;
  gap: 0.2rem;
}
.spec-list dt { font-family: var(--font-mono); font-size: 0.54rem; letter-spacing: 0.14em; color: var(--txt-4); }
.spec-list dd {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--txt-1);
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}
.spec-list dd small { font-size: 0.6rem; color: var(--txt-3); margin-left: 2px; }

.fleet__hint {
  position: absolute;
  right: 1rem; bottom: 0.9rem;
  font-size: 0.5rem;
  color: var(--txt-4);
}

/* =====================================================================
   技术架构
   ===================================================================== */
.arch {
  padding: var(--sec-y) 0;
  background: var(--void-0);
  border-top: 1px solid var(--line);
}

.arch__wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(1.6rem, 4vw, 4rem);
  align-items: start;
}

.arch__diagram { position: relative; padding-top: 1.6rem; }
.arch__axis {
  display: flex;
  justify-content: space-between;
  color: var(--txt-4);
  font-size: 0.5rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--line);
}

.arch__stack { display: grid; gap: 6px; padding-top: 6px; }

.layer { position: relative; }
.layer button {
  width: 100%;
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.9rem;
  padding: 1.1rem 1.1rem;
  text-align: left;
  position: relative;
  background: linear-gradient(90deg, rgba(18, 28, 40, 0.85), rgba(10, 16, 24, 0.55));
  border: 1px solid var(--line);
  border-left: 2px solid rgba(158, 190, 220, 0.22);
  transition: background 0.45s var(--e-soft), border-color 0.45s, transform 0.45s var(--e-out),
    padding 0.45s var(--e-out);
  overflow: hidden;
}
.layer button::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(46, 230, 200, 0.12), transparent 62%);
  opacity: 0;
  transition: opacity 0.45s;
}
.layer button:hover { border-color: var(--line-mid); transform: translateX(4px); }
.layer button:hover::after { opacity: 0.55; }
.layer.is-open button {
  border-left-color: var(--cyan);
  border-color: rgba(46, 230, 200, 0.34);
  background: linear-gradient(90deg, rgba(24, 44, 48, 0.85), rgba(10, 16, 24, 0.5));
  padding-left: 1.4rem;
}
.layer.is-open button::after { opacity: 1; }

.layer__idx { font-size: 0.58rem; color: var(--txt-4); transition: color 0.4s; }
.layer.is-open .layer__idx { color: var(--cyan); }
.layer__name {
  display: grid;
  gap: 0.1rem;
  font-size: clamp(0.9rem, 1.2vw, 1.02rem);
  color: var(--txt-1);
}
.layer__name em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 0.48rem;
  letter-spacing: 0.18em;
  color: var(--txt-4);
}
.layer__w { font-size: 0.52rem; color: var(--txt-3); }
.layer.is-open .layer__w { color: var(--cyan-dim); }

.arch__readout {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding-top: 1.1rem;
  color: var(--txt-4);
  font-size: 0.52rem;
}
.arch__readout i {
  flex: 1;
  height: 1px;
  background: var(--line);
  position: relative;
}
.arch__readout i b {
  position: absolute;
  left: 0; top: 0;
  height: 1px;
  width: var(--v);
  background: var(--cyan);
  box-shadow: 0 0 8px rgba(46, 230, 200, 0.7);
  animation: barGrow 1.6s var(--e-out) both;
}

.arch__detail {
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(14, 22, 32, 0.7), rgba(4, 7, 12, 0.5));
  padding: clamp(1.4rem, 2.4vw, 2.2rem);
  min-height: 380px;
  position: relative;
  overflow: hidden;
}
.arch__detail::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0.7;
}
.arch__detail-in { display: grid; gap: 1rem; animation: detailIn 0.5s var(--e-out); }
@keyframes detailIn { from { opacity: 0; transform: translateY(10px); } }

.arch__detail h3 {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2vw, 1.7rem);
  font-weight: 500;
  letter-spacing: -0.01em;
}
.arch__detail .tag { color: var(--cyan); font-size: 0.58rem; }
.arch__detail p { color: var(--txt-2); font-size: 0.9rem; line-height: 1.95; }

.arch-list { display: grid; gap: 0; margin-top: 0.4rem; border-top: 1px solid var(--line); }
.arch-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.62rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.78rem;
  color: var(--txt-2);
}
.arch-list li b { font-family: var(--font-mono); font-weight: 400; font-size: 0.62rem; color: var(--txt-1); letter-spacing: 0.06em; }

/* =====================================================================
   指标
   ===================================================================== */
.metrics {
  padding: var(--sec-y) 0;
  background: var(--void-1);
  border-top: 1px solid var(--line);
}

.metrics__grid {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.metric {
  background: var(--void-1);
  padding: clamp(1.4rem, 2.4vw, 2.2rem);
  display: grid;
  align-content: start;
  gap: 0.55rem;
  position: relative;
  overflow: hidden;
  transition: background 0.5s var(--e-soft);
}
.metric:hover { background: #0a121b; }
/* 3 列栅格：大格占 2×2，其余自动填满，无空洞 */
.metric--hero { grid-column: span 2; grid-row: span 2; }
.metric:nth-child(5) { grid-column: span 2; }

.metric__num {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.metric__num b {
  font-size: clamp(1.9rem, 3.1vw, 2.9rem);
  font-weight: 400;
  letter-spacing: -0.04em;
  color: var(--white);
}
.metric--hero .metric__num b {
  font-size: clamp(3.2rem, 7vw, 6rem);
  background: linear-gradient(120deg, #fff 20%, var(--cyan) 78%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.metric__num em { font-style: normal; font-size: 0.82rem; color: var(--cyan); letter-spacing: 0.02em; }
.metric--hero .metric__num em { font-size: clamp(0.9rem, 1.5vw, 1.2rem); }

.metric__label { color: var(--txt-2); font-size: 0.84rem; }
.metric__note { color: var(--txt-4); font-size: 0.5rem; }
.metric--hero .metric__note { letter-spacing: 0.16em; }

.metric__spark { margin-top: auto; padding-top: 1.6rem; }
.metric__spark svg { width: 100%; height: 64px; }
.spark-line {
  fill: none;
  stroke: rgba(46, 230, 200, 0.75);
  stroke-width: 1.2;
  stroke-dasharray: 600;
  stroke-dashoffset: 600;
  transition: stroke-dashoffset 2.4s var(--e-in-out) 0.3s;
  filter: drop-shadow(0 0 6px rgba(46, 230, 200, 0.45));
}
.metric--hero.is-in .spark-line { stroke-dashoffset: 0; }

/* =====================================================================
   任务场景
   ===================================================================== */
.missions {
  padding: var(--sec-y) 0;
  background: var(--void-0);
  border-top: 1px solid var(--line);
}

.missions__wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: clamp(1.4rem, 3vw, 3rem);
  align-items: start;
}

.missions__list { display: grid; border-top: 1px solid var(--line); }
.mission-tab {
  display: grid;
  gap: 0.1rem;
  padding: 1.1rem 0.9rem 1.1rem 0;
  text-align: left;
  border-bottom: 1px solid var(--line);
  color: var(--txt-2);
  position: relative;
  transition: color 0.35s, padding-left 0.45s var(--e-out), background 0.4s;
}
.mission-tab::before {
  content: "";
  position: absolute;
  left: -1px; top: 0; bottom: 0;
  width: 1px;
  background: var(--cyan);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.5s var(--e-out);
  box-shadow: 0 0 12px rgba(46, 230, 200, 0.8);
}
.mission-tab .mono { font-size: 0.5rem; color: var(--txt-4); }
.mission-tab b {
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 400;
  letter-spacing: 0.01em;
}
.mission-tab i { font-style: normal; font-size: 0.6rem; color: var(--txt-4); letter-spacing: 0.06em; }
.mission-tab:hover { color: var(--txt-1); padding-left: 0.5rem; }
.mission-tab.is-active { color: var(--white); padding-left: 0.9rem; background: rgba(46, 230, 200, 0.03); }
.mission-tab.is-active::before { transform: scaleY(1); }
.mission-tab.is-active .mono { color: var(--cyan); }
.mission-tab.is-active i { color: var(--txt-2); }

.missions__panels { border: 1px solid var(--line); background: var(--void-1); position: relative; overflow: hidden; }

.mission-panel { display: none; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); }
.mission-panel.is-active { display: grid; animation: panelIn 0.6s var(--e-out) both; }

.mission-panel__media {
  position: relative;
  min-height: 340px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border-right: 1px solid var(--line);
  background: radial-gradient(60% 60% at 50% 50%, rgba(6, 12, 18, 0.4), #03060b);
}
.media-orb {
  width: 190px; height: 190px;
  border-radius: 50%;
  position: relative;
  background: radial-gradient(circle at 34% 30%, rgba(255, 255, 255, 0.5), transparent 42%),
    radial-gradient(circle at 50% 50%, var(--c1), transparent 68%);
  box-shadow: 0 0 90px 10px var(--c2), inset 0 0 60px rgba(0, 0, 0, 0.7);
  filter: saturate(1.1);
  animation: orbFloat 8s ease-in-out infinite;
}
.media-orb::before,
.media-orb::after {
  content: "";
  position: absolute;
  inset: -26%;
  border-radius: 50%;
  border: 1px solid rgba(200, 230, 255, 0.14);
}
.media-orb::after { inset: -48%; border-style: dashed; opacity: 0.5; animation: figSpin 40s linear infinite; }
@keyframes orbFloat {
  0%, 100% { transform: translateY(-6px) scale(1); }
  50% { transform: translateY(6px) scale(1.02); }
}
.media-orb--cyan { --c1: rgba(46, 230, 200, 0.55); --c2: rgba(46, 230, 200, 0.2); }
.media-orb--blue { --c1: rgba(61, 123, 255, 0.55); --c2: rgba(61, 123, 255, 0.22); }
.media-orb--amber { --c1: rgba(255, 176, 92, 0.5); --c2: rgba(255, 140, 60, 0.18); }
.media-orb--violet { --c1: rgba(138, 107, 255, 0.55); --c2: rgba(138, 107, 255, 0.22); }

.media-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(120, 170, 200, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(120, 170, 200, 0.06) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(60% 60% at 50% 50%, transparent 30%, #000 100%);
  pointer-events: none;
}
.media-code {
  position: absolute;
  left: 1rem; bottom: 1rem;
  color: var(--txt-4);
  font-size: 0.5rem;
}

.mission-panel__body { padding: clamp(1.4rem, 2.6vw, 2.4rem); display: grid; align-content: center; gap: 0.9rem; }
.mission-panel__body h3 {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.1vw, 1.7rem);
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.3;
}
.mission-panel__body p { color: var(--txt-2); font-size: 0.9rem; line-height: 1.95; }

.data-list { display: flex; flex-wrap: wrap; gap: 1.6rem; padding-top: 0.6rem; }
.data-list li { display: grid; gap: 0.22rem; }
.data-list .mono { font-size: 0.48rem; color: var(--txt-4); }
.data-list b { font-family: var(--font-display); font-size: 1rem; font-weight: 400; color: var(--txt-1); }

/* =====================================================================
   建造记录
   ===================================================================== */
.registry {
  padding: var(--sec-y) 0;
  background: var(--void-1);
  border-top: 1px solid var(--line);
}

.reg {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.reg__head,
.reg__row {
  display: grid;
  grid-template-columns: 120px minmax(0, 1.6fr) minmax(0, 0.9fr) 150px 100px;
  gap: 1rem;
  align-items: center;
}
.reg__head {
  padding: 0 0.8rem 0.9rem;
  color: var(--txt-4);
  font-size: 0.5rem;
  border-bottom: 1px solid var(--line-mid);
}
.reg__row {
  padding: 1.15rem 0.8rem;
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: padding-left 0.45s var(--e-out), background 0.45s;
}
.reg__row::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(46, 230, 200, 0.06), transparent 62%);
  opacity: 0;
  transition: opacity 0.45s;
  pointer-events: none;
}
.reg__row:hover { padding-left: 1.6rem; }
.reg__row:hover::before { opacity: 1; }

.reg__id { font-size: 0.62rem; color: var(--txt-3); letter-spacing: 0.12em; }
.reg__row:hover .reg__id { color: var(--cyan); }

.reg__name { display: grid; gap: 0.1rem; }
.reg__name b {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--txt-1);
}
.reg__name i {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.14em;
  color: var(--txt-4);
}
.reg__type { font-size: 0.78rem; color: var(--txt-2); }

.reg__status {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.72rem;
  color: var(--txt-2);
  white-space: nowrap;
}
.reg__status i { width: 5px; height: 5px; border-radius: 50%; background: currentColor; }
.reg__status.is-live { color: var(--cyan); }
.reg__status.is-live i { box-shadow: 0 0 8px var(--cyan); animation: pulse 2.2s infinite; }
.reg__status.is-build { color: var(--amber); }
.reg__status.is-done { color: var(--txt-4); }
.reg__status.is-class { color: var(--violet); }
.reg__row.is-locked { opacity: 0.55; }
.reg__row.is-locked .reg__name b { letter-spacing: 0.1em; color: var(--txt-3); }

.reg__date { font-size: 0.58rem; color: var(--txt-3); justify-self: end; }

.reg__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.2rem 0.8rem 0;
  color: var(--txt-4);
  font-size: 0.52rem;
  flex-wrap: wrap;
}

/* =====================================================================
   人与船坞
   ===================================================================== */
.people {
  padding: var(--sec-y) 0;
  background: var(--void-0);
  border-top: 1px solid var(--line);
}

.people__grid {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}

.people__quote blockquote {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.2vw, 1.9rem);
  line-height: 1.55;
  letter-spacing: -0.015em;
  color: var(--txt-1);
  border-left: 1px solid var(--line-mid);
  padding-left: clamp(1rem, 2vw, 1.8rem);
}
.people__quote em { font-style: normal; }

.people__by { display: flex; align-items: center; gap: 0.85rem; margin-top: 1.6rem; padding-left: clamp(1rem, 2vw, 1.8rem); }
.people__avatar {
  width: 40px; height: 40px;
  border: 1px solid var(--line-mid);
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  color: var(--cyan);
  background: radial-gradient(circle at 30% 30%, rgba(46, 230, 200, 0.16), transparent 70%);
}
.people__by b { display: block; font-weight: 500; font-size: 0.88rem; }
.people__by span { font-size: 0.5rem; color: var(--txt-4); letter-spacing: 0.14em; }

.timeline { display: grid; border-top: 1px solid var(--line); }
.timeline li {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 1.2rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.timeline li::before {
  content: "";
  position: absolute;
  left: 64px; top: 0; bottom: 0;
  width: 1px;
  background: var(--line);
}
.timeline__year { color: var(--txt-3); font-size: 0.6rem; padding-top: 0.18rem; position: relative; }
.timeline__year::after {
  content: "";
  position: absolute;
  right: -3.5px; top: 0.6rem;
  width: 6px; height: 6px;
  background: var(--void-0);
  border: 1px solid var(--cyan-dim);
  border-radius: 50%;
}
.timeline li.is-future .timeline__year { color: var(--cyan); }
.timeline li.is-future .timeline__year::after { border-color: var(--cyan); box-shadow: 0 0 10px rgba(46, 230, 200, 0.7); }
.timeline li > div { padding-left: 1.2rem; }
.timeline b { font-size: 0.92rem; font-weight: 500; color: var(--txt-1); }
.timeline p { color: var(--txt-3); font-size: 0.82rem; line-height: 1.8; margin-top: 0.2rem; }

.crew-grid {
  max-width: var(--wrap);
  margin: clamp(2.6rem, 5vw, 4.4rem) auto 0;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border-block: 1px solid var(--line);
}
.crew-grid li {
  background: var(--void-0);
  padding: 1.6rem 1.2rem;
  display: grid;
  gap: 0.25rem;
}
.crew-grid b { font-size: 1.5rem; font-weight: 400; color: var(--titanium); letter-spacing: 0.02em; }
.crew-grid span { font-size: 0.72rem; color: var(--txt-3); }

/* =====================================================================
   FAQ
   ===================================================================== */
.faq {
  padding: var(--sec-y) 0;
  background: var(--void-1);
  border-top: 1px solid var(--line);
}
.faq__grid {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(0, 1.25fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}
.faq__aside { position: sticky; top: 110px; display: grid; gap: 1.2rem; justify-items: start; }
.qa button { padding-block: 1.55rem; }
.faq__aside .lede { font-size: 0.9rem; }

/* =====================================================================
   联系
   ===================================================================== */
.contact {
  position: relative;
  padding: var(--sec-y) 0;
  background: var(--void-0);
  border-top: 1px solid var(--line);
  overflow: hidden;
}
.contact__glow {
  position: absolute;
  width: 70vw; height: 70vw;
  max-width: 900px; max-height: 900px;
  right: -22vw; top: -18%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(61, 123, 255, 0.12), transparent 62%);
  pointer-events: none;
  filter: blur(20px);
}
.contact__grid {
  position: relative;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}

.contact__meta { display: grid; gap: 1.2rem; margin-top: clamp(1.8rem, 3vw, 2.8rem); }
.contact__meta li { display: grid; gap: 0.28rem; padding-bottom: 1rem; border-bottom: 1px solid var(--line); }
.contact__meta .mono { color: var(--txt-4); font-size: 0.5rem; }
.contact__meta b { font-weight: 400; font-size: 0.88rem; color: var(--txt-2); }
.contact__meta a { color: var(--txt-1); border-bottom: 1px solid var(--line-mid); transition: color 0.3s, border-color 0.3s; }
.contact__meta a:hover { color: var(--cyan); border-color: var(--cyan); }

.form {
  padding: clamp(1.4rem, 2.6vw, 2.4rem);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(14, 22, 32, 0.7), rgba(4, 7, 12, 0.4));
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  position: relative;
}
.form::before,
.form::after {
  content: "";
  position: absolute;
  width: 10px; height: 10px;
  border: 1px solid rgba(46, 230, 200, 0.6);
}
.form::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.form::after { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }

/* =====================================================================
   页脚
   ===================================================================== */
.foot {
  position: relative;
  padding: clamp(3rem, 6vw, 5rem) 0 1.6rem;
  background: #02040a;
  border-top: 1px solid var(--line);
  overflow: hidden;
}
.foot__top {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: clamp(2rem, 4vw, 4rem);
  align-items: start;
}
.foot__brand { display: grid; gap: 0.3rem; justify-items: start; }
.foot__brand svg { width: 34px; color: var(--titanium); margin-bottom: 0.6rem; }
.foot__brand b { font-family: var(--font-display); font-size: 1.15rem; letter-spacing: 0.24em; font-weight: 500; }
.foot__brand span { font-size: 0.52rem; color: var(--txt-4); letter-spacing: 0.18em; }

.foot__links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; }
.foot__links h4 { font-family: var(--font-mono); font-size: 0.5rem; letter-spacing: 0.22em; color: var(--txt-4); margin-bottom: 0.9rem; font-weight: 400; text-transform: uppercase; }
.foot__links a {
  display: block;
  font-size: 0.82rem;
  color: var(--txt-2);
  padding: 0.3rem 0;
  transition: color 0.3s, transform 0.35s var(--e-out);
}
.foot__links a:hover { color: var(--cyan); transform: translateX(3px); }

.foot__word {
  font-family: var(--font-display);
  font-size: clamp(3.4rem, 15.5vw, 15rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 0.85;
  text-align: center;
  margin: clamp(2.4rem, 5vw, 4rem) 0 clamp(1.4rem, 3vw, 2.4rem);
  color: transparent;
  -webkit-text-stroke: 1px rgba(158, 190, 220, 0.2);
  user-select: none;
  background: linear-gradient(180deg, rgba(158, 190, 220, 0.09), transparent 78%);
  -webkit-background-clip: text;
  background-clip: text;
}

.foot__bottom {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 1.2rem var(--gutter) 0;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--txt-4);
  font-size: 0.5rem;
}
.foot__coords { color: var(--txt-4); }
.foot__top-link { display: inline-flex; align-items: center; gap: 0.4rem; transition: color 0.3s; }
.foot__top-link svg { width: 12px; height: 12px; }
.foot__top-link:hover { color: var(--cyan); }

/* =====================================================================
   响应式
   ===================================================================== */
@media (max-width: 1180px) {
  .hero__inner { grid-template-columns: 1fr; gap: 2rem; }
  .hud { width: min(340px, 100%); justify-self: start; }
  .hero__title { font-size: clamp(2.4rem, 7.6vw, 5rem); }
  .reg__head, .reg__row { grid-template-columns: 90px minmax(0, 1.5fr) minmax(0, 0.8fr) 130px; }
  .reg__head span:last-child, .reg__date { display: none; }
  .arch__wrap, .missions__wrap { grid-template-columns: 1fr; }
  .missions__list { grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
  .mission-tab { border-bottom: 0; border-right: 1px solid var(--line); padding: 0.9rem 0.6rem; }
  .mission-tab:hover { padding-left: 0.6rem; }
  .mission-tab.is-active { padding-left: 0.6rem; }
  .mission-tab::before { top: auto; bottom: 0; left: 0; right: 0; width: auto; height: 1px; transform: scaleX(0); }
  .mission-tab.is-active::before { transform: scaleX(1); }
  .metrics__grid { grid-template-columns: repeat(2, 1fr); }
  .metric--hero { grid-column: span 2; grid-row: auto; }
  .metric:nth-child(5) { grid-column: span 2; }
  .faq__aside { position: static; }
}

@media (max-width: 900px) {
  .manifesto__grid,
  .people__grid,
  .faq__grid,
  .contact__grid,
  .foot__top { grid-template-columns: 1fr; }
  .manifesto__figure { order: -1; }
  .kpi-strip { grid-template-columns: repeat(2, 1fr); }
  .kpi-strip li { padding: 1.5rem 1.2rem 0 0; }
  .kpi-strip li:nth-child(3) { padding-left: 0; border-left: 0; }
  .kpi-strip li:nth-child(3),
  .kpi-strip li:nth-child(4) { border-top: 1px solid var(--line); margin-top: 1.2rem; }
  .kpi-strip li:nth-child(4) { padding-left: 1.2rem; }
  .fleet__tabs { grid-template-columns: 1fr; }
  .fleet__tab { grid-template-columns: 40px 1fr 1fr; align-items: center; padding: 0.8rem 1rem; }
  .fleet__tab b, .fleet__tab i { grid-column: auto; }
  .fleet__tab + .fleet__tab { border-left: 0; border-top: 1px solid var(--line); }
  .fleet__tab-ind { display: none; }
  .fleet__panel { min-height: 0; display: none; }
  .fleet__panel.is-active { display: block; }
  .fleet__visual {
    position: static;
    padding: 1.2rem 1.2rem 0;
  }
  .ship-svg { opacity: 0.85; }
  .fleet__tag { position: static; max-width: none; padding: 0.6rem 0 1rem; }
  .fleet__specs {
    width: auto;
    min-height: 0;
    margin: 0;
    border-left: 0;
    border-top: 1px solid var(--line);
    box-shadow: none;
  }
  .fleet__hint { display: none; }
  .mission-panel { grid-template-columns: 1fr; }
  .mission-panel__media { min-height: 220px; border-right: 0; border-bottom: 1px solid var(--line); }
  .media-orb { width: 130px; height: 130px; }
  .crew-grid { grid-template-columns: repeat(2, 1fr); }
  .foot__links { grid-template-columns: repeat(3, 1fr); }
  .missions__list { grid-template-columns: repeat(2, 1fr); }
  .mission-tab:nth-child(2) { border-right: 0; }
  .mission-tab:nth-child(3), .mission-tab:nth-child(4) { border-top: 1px solid var(--line); }
  .arch__detail { min-height: 0; }
}

@media (max-width: 680px) {
  :root { --nav-h: 64px; }
  /* 移动端改为「顶部标题 / 中部舰体 / 底部行动」的三段式，避免大片死白 */
  .hero { align-items: stretch; }
  .hero__inner {
    min-height: calc(100svh - var(--nav-h) - 44px);
    padding-bottom: 4.2rem;
    padding-top: 4vh;
  }
  .hero__copy {
    display: grid;
    grid-template-rows: auto auto 1fr auto;
    height: 100%;
  }
  .hero__sub { align-self: end; }
  .hero__title { font-size: clamp(2.15rem, 10vw, 3.2rem); letter-spacing: -0.03em; }
  .hero__corners { display: none; }
  .hero__scroll { display: none; }
  .hero__sub { font-size: 0.86rem; line-height: 1.85; }
  .hud { display: none; }
  /* 移动端提高压暗层，保证按钮与正文在舰体之上依然清晰 */
  .hero__vignette {
    background:
      radial-gradient(90% 70% at 50% 46%, rgba(3, 5, 10, 0.28) 22%, rgba(3, 5, 10, 0.86) 100%),
      linear-gradient(to top, var(--void-0) 4%, rgba(3, 5, 10, 0.9) 30%, rgba(3, 5, 10, 0.35) 70%);
  }
  .hero__cta { width: 100%; }
  .hero__cta .btn { flex: 1; padding: 0.9rem 1rem; font-size: 0.78rem; }
  .caps .cap__head { grid-template-columns: 2.4rem minmax(0, 1fr) 1.4rem; }
  .cap__spec { display: none; }
  .cap__panel-in { padding-left: 0; }
  .metrics__grid { grid-template-columns: 1fr; }
  .metric--hero, .metric:nth-child(5) { grid-column: span 1; }
  .reg__head { display: none; }
  .reg__row { grid-template-columns: 74px 1fr 90px; row-gap: 0.5rem; }
  .reg__type { display: none; }
  .reg__date { display: none; }
  .foot__links { grid-template-columns: 1fr 1fr; }
  .foot__bottom { flex-direction: column; align-items: flex-start; }
  .missions__list { grid-template-columns: 1fr 1fr; }
  .data-list { gap: 1.1rem; }
  .arch__layer button { grid-template-columns: 2.2rem 1fr; }
  .layer__w { display: none; }
}

/* 舰级图纸的尺寸标注 */
.ship-dim path {
  fill: none;
  stroke: rgba(158, 190, 220, 0.3);
  stroke-width: 1;
  stroke-dasharray: 3 5;
}
.ship-dim text {
  fill: var(--txt-3);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  text-anchor: middle;
}