/* =========================================================
   首页 · page-home
   ========================================================= */

.page-home {
  --home-edge: 20px;
  display: block;
  background: var(--c-deep);
  color: var(--c-mute);
  overflow-x: hidden;
}

@media (min-width: 768px) {
  .page-home { --home-edge: 48px; }
}

/* ---------- 顶部上下文 ---------- */

.page-home .home-ctx {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 20px var(--home-edge) 0;
}

.page-home .crumbs a {
  color: var(--c-anno);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-home .crumbs a:hover,
.page-home .crumbs a:focus-visible {
  color: var(--c-cyan);
  border-bottom-color: var(--c-cyan);
}

.page-home .home-ctx__state {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-anno);
}

.page-home .home-ctx__state i {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-cyan);
  box-shadow: 0 0 10px var(--c-cyan);
}

/* ---------- 首屏框景 ---------- */

.page-home .hero {
  position: relative;
  isolation: isolate;
  display: flex;
  flex-direction: column;
  gap: 32px;
  margin: 24px auto 0;
  width: min(calc(100% - var(--home-edge) * 2), var(--maxw));
  min-height: 0;
  padding: 64px 20px 28px;
  border: 1px solid var(--c-line);
  overflow: hidden;
}

@media (min-width: 768px) {
  .page-home .hero { padding: 92px 48px 36px; }
}

@media (min-width: 900px) {
  .page-home .hero { min-height: min(84vh, 700px); }
}

.page-home .hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 38%;
  filter: saturate(.5) brightness(.4) contrast(1.08);
}

.page-home .hero__veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(6, 26, 22, .58) 0%, rgba(6, 26, 22, .74) 46%, var(--c-deep) 97%),
    radial-gradient(72% 62% at 6% 92%, rgba(60, 242, 210, .20), transparent 62%),
    radial-gradient(52% 46% at 94% 8%, rgba(138, 123, 255, .18), transparent 66%);
}

.page-home .hero__arc {
  position: absolute;
  inset: 0;
  z-index: 2;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.page-home .hero__arc-line {
  fill: none;
  stroke: var(--c-cyan);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-dasharray: 2000;
  stroke-dashoffset: 2000;
  animation: home-arc-draw 1700ms var(--ease) 300ms forwards;
  filter: drop-shadow(0 0 8px rgba(60, 242, 210, .5));
}

@keyframes home-arc-draw {
  to { stroke-dashoffset: 0; }
}

.page-home .hero__arc-dot {
  fill: var(--c-amber);
  opacity: 0;
  transform-box: fill-box;
  transform-origin: center;
  animation: home-arc-dot 420ms ease-out 1860ms forwards;
}

@keyframes home-arc-dot {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.page-home .hero__frame {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
}

.page-home .hero__frame::before,
.page-home .hero__frame::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 12px;
  background-image: repeating-linear-gradient(to right, var(--c-line) 0 1px, transparent 1px 36px);
  opacity: .9;
}

.page-home .hero__frame::before { top: 0; }
.page-home .hero__frame::after { bottom: 0; }

.page-home .hero__body {
  position: relative;
  z-index: 4;
  max-width: 44rem;
}

.page-home .hero__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--c-cyan);
}

.page-home .hero__title {
  margin: 14px 0 0;
  font-size: clamp(30px, 6vw, 62px);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -.01em;
  color: var(--c-white);
}

.page-home .hero__lede {
  margin: 18px 0 0;
  max-width: 40ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-mute);
}

.page-home .hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-home .hero__stats {
  position: relative;
  z-index: 4;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: auto;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

@media (min-width: 560px) {
  .page-home .hero__stats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.page-home .hero__stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 16px 20px;
  background: rgba(13, 42, 36, .74);
  backdrop-filter: blur(8px);
}

.page-home .hero__stat-num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 6vw, 52px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--c-white);
  font-variant-numeric: tabular-nums;
}

.page-home .hero__stat-k {
  font-size: 13px;
  line-height: 1.45;
  color: var(--c-mute);
}

.page-home .hero__stat-v {
  font-size: 12px;
  line-height: 1.5;
  color: var(--c-anno);
}

/* ---------- 三条数据主线 ---------- */

.page-home .lane-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

@media (min-width: 960px) {
  .page-home .lane-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.page-home .lane {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 26px 22px 24px;
  background: linear-gradient(180deg, var(--c-panel) 0%, var(--c-panel-2) 100%);
  border-top: 2px solid var(--c-cyan);
}

.page-home .lane__k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .24em;
  color: var(--c-cyan);
}

.page-home .lane__title {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-white);
}

.page-home .lane__body {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-mute);
}

.page-home .lane__foot {
  margin: auto 0 0;
  padding-top: 8px;
}

.page-home .ticks {
  display: flex;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
  scrollbar-width: thin;
  scrollbar-color: var(--c-cyan) rgba(30, 59, 52, .5);
}

.page-home .ticks::-webkit-scrollbar { height: 4px; }
.page-home .ticks::-webkit-scrollbar-track { background: rgba(30, 59, 52, .4); }
.page-home .ticks::-webkit-scrollbar-thumb { background: var(--c-cyan); }

.page-home .ticks > span {
  flex: 0 0 auto;
  padding: 7px 12px;
  border-left: 1px solid var(--c-line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--c-anno);
}

.page-home .ticks > span:last-child {
  border-right: 1px solid var(--c-line);
  color: var(--c-cyan);
}

.page-home .tag-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-home .tag-strip > span {
  padding: 5px 10px;
  border: 1px solid var(--c-line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--c-anno);
}

.page-home .latency {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
}

.page-home .latency__i {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.page-home .latency__n {
  font-family: var(--font-mono);
  font-size: 19px;
  letter-spacing: -.01em;
  color: var(--c-white);
}

.page-home .latency__k {
  font-size: 12px;
  color: var(--c-anno);
}

/* ---------- 覆盖范围 ---------- */

.page-home .cover {
  display: grid;
  gap: 28px;
}

@media (min-width: 900px) {
  .page-home .cover {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 40px;
    align-items: center;
  }
}

.page-home .cover__text {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-home .cover__title {
  margin: 0;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--c-white);
}

.page-home .cover__body {
  margin: 0;
  max-width: 42ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-mute);
}

.page-home .cover__stages {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
}

.page-home .cover__stages li {
  display: flex;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--c-line);
  font-size: 14px;
  line-height: 1.7;
}

.page-home .cover__stages li:first-child { border-top: 1px solid var(--c-line); }

.page-home .cover__stages b {
  flex: 0 0 auto;
  width: 76px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--c-cyan);
}

/* ---------- 图片通用 ---------- */

.page-home figure { margin: 0; }

.page-home .fig {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--c-line);
}

.page-home .fig--16-9 { aspect-ratio: 16 / 9; }
.page-home .fig--4-5  { aspect-ratio: 4 / 5; }
.page-home .fig--21-9 { aspect-ratio: 21 / 9; }

.page-home .fig-cap {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--c-anno);
}

/* ---------- 安装与同步 ---------- */

.page-home .install {
  display: grid;
  gap: 32px;
}

@media (min-width: 900px) {
  .page-home .install {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }
}

.page-home .install__text {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-home .steps {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-home .step {
  display: flex;
  gap: 16px;
  padding: 18px 18px 20px;
  background: var(--c-deep);
}

.page-home .step__n {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--c-amber);
}

.page-home .step__t {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-white);
}

.page-home .step__d {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-mute);
}

.page-home .install__meter {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  margin-top: 4px;
}

.page-home .install__meter span {
  height: 4px;
  background: var(--c-line);
}

.page-home .install__meter span:first-child {
  background: var(--c-cyan);
}

.page-home .install__meter span:nth-child(2) {
  background: var(--c-cyan);
  opacity: .55;
}

.page-home .install__meter span:last-child {
  background: var(--c-amber);
  opacity: .5;
}

.page-home .sync {
  margin-top: 8px;
  padding: 18px 20px 20px;
  border: 1px solid var(--c-line);
  background: rgba(13, 42, 36, .5);
}

.page-home .sync__k {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--c-anno);
}

.page-home .sync__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin: 0;
  padding: 0;
}

.page-home .sync__list li {
  padding: 5px 12px;
  border: 1px solid var(--c-line);
  font-size: 13px;
  color: var(--c-mute);
}

.page-home .sync__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-anno);
}

.page-home .install__fig {
  align-self: start;
}

@media (min-width: 900px) {
  .page-home .install__fig { padding-top: 52px; }
}

/* ---------- 积分榜与交锋 ---------- */

.page-home .board {
  display: grid;
  gap: 16px;
}

@media (min-width: 900px) {
  .page-home .board { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
}

.page-home .board__col {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 24px 20px 26px;
  border: 1px solid var(--c-line);
  background: var(--c-panel-2);
}

.page-home .board__h {
  margin: 0;
  font-size: 18px;
  line-height: 1.45;
  color: var(--c-white);
}

.page-home .board__p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-mute);
}

.page-home .board__rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  padding-bottom: 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--c-cyan) transparent;
}

.page-home .board__rail::-webkit-scrollbar { height: 3px; }
.page-home .board__rail::-webkit-scrollbar-thumb { background: var(--c-cyan); }

.page-home .board__rail-i {
  flex: 0 0 auto;
  padding: 6px 12px;
  border: 1px solid var(--c-line);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-anno);
  white-space: nowrap;
}

.page-home .board__rail-i.is-on {
  border-color: var(--c-cyan);
  color: var(--c-cyan);
  box-shadow: inset 0 -2px 0 var(--c-amber);
}

/* ---------- 双维视图 ---------- */

.page-home .duo__fig {
  margin-top: 28px;
}

.page-home .duo__cards {
  display: grid;
  gap: 1px;
  margin-top: 20px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

@media (min-width: 860px) {
  .page-home .duo__cards { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.page-home .duo__card {
  padding: 20px 20px 22px;
  background: var(--c-deep);
}

.page-home .duo__k {
  display: block;
  margin-bottom: 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--c-violet);
}

.page-home .duo__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-mute);
}

/* ---------- 收尾导航 ---------- */

.page-home .outro__inner {
  display: grid;
  gap: 26px;
}

@media (min-width: 860px) {
  .page-home .outro__inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 44px;
    align-items: end;
  }
}

.page-home .outro__title {
  margin: 0;
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--c-white);
}

.page-home .outro__body {
  margin: 14px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-mute);
}

.page-home .outro__nav {
  display: grid;
  gap: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-home .outro__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  background: var(--c-panel-2);
  color: var(--c-mute);
  font-size: 14px;
  text-decoration: none;
  transition: background 180ms var(--ease), color 180ms var(--ease);
}

.page-home .outro__link::after {
  content: "→";
  color: var(--c-cyan);
}

.page-home .outro__link:hover,
.page-home .outro__link:focus-visible {
  background: var(--c-panel);
  color: var(--c-white);
}

/* ---------- 减少动态偏好 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-home .hero__arc-line {
    stroke-dashoffset: 0;
    animation: none;
  }
  .page-home .hero__arc-dot {
    opacity: 1;
    animation: none;
  }
  .page-home .outro__link { transition: none; }
}