.page-home {
  --home-radius: 0;
  --tech-tone: var(--cyan);
  display: block;
  background: var(--ink);
  color: var(--text);
  overflow-x: clip;
}

/* ---------- 01 首屏 ---------- */

.page-home .hero {
  position: relative;
  isolation: isolate;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-top: calc(var(--header-h) + clamp(28px, 7vh, 80px));
  padding-bottom: clamp(28px, 6vh, 64px);
  overflow: hidden;
}

.page-home .hero__glow {
  position: absolute;
  z-index: -1;
  top: -14%;
  left: -10%;
  width: min(900px, 120vw);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 177, 59, .11) 0%, rgba(255, 177, 59, .03) 40%, transparent 70%);
  pointer-events: none;
}

.page-home .hero__gridlines {
  position: absolute;
  z-index: -2;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size);
  opacity: .55;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, .25) 62%, transparent 88%);
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, .25) 62%, transparent 88%);
  pointer-events: none;
}

.page-home .hero__track {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 22%;
  width: 100%;
  height: 32%;
  z-index: -1;
  pointer-events: none;
}

.page-home .hero__vnote {
  display: none;
  position: absolute;
  left: 18px;
  top: 24%;
  z-index: 3;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .26em;
  color: var(--muted);
  writing-mode: vertical-rl;
}

.page-home .hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  gap: clamp(22px, 3.6vh, 40px);
}

.page-home .hero__lead {
  display: grid;
  gap: 14px;
  max-width: 46rem;
}

.page-home .hero__title {
  margin: 0;
  font-family: var(--font-condensed);
  font-weight: 700;
  font-size: clamp(48px, 13vw, 132px);
  line-height: .94;
  letter-spacing: -.04em;
  color: var(--text);
}

.page-home .hero__lede {
  margin: 0;
  max-width: 34em;
  font-size: 17px;
  line-height: 1.85;
  color: var(--text);
}

.page-home .hero__note {
  margin: 0;
  font-size: 13px;
  letter-spacing: .06em;
  line-height: 1.7;
  color: var(--muted);
}

.page-home .hero__visual {
  margin: 0;
  position: relative;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

.page-home .hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  filter: saturate(.68) brightness(.72) contrast(1.06);
}

.page-home .chapter-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1px;
  background: var(--grid-line);
  border-top: 1px solid var(--grid-line);
  border-bottom: 1px solid var(--grid-line);
}

.page-home .chapter {
  display: flex;
  min-width: 0;
}

.page-home .chapter__link {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 100%;
  min-width: 0;
  padding: 16px 14px 18px;
  background: var(--ink);
  color: var(--text);
  text-decoration: none;
  transition: background var(--base) var(--ease);
}

.page-home .chapter__link:hover,
.page-home .chapter__link:focus-visible {
  background: var(--amber-12);
}

.page-home .chapter__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 2.6vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--amber);
}

.page-home .chapter__name {
  font-family: var(--font-condensed);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -.01em;
  line-height: 1.3;
}

.page-home .chapter__desc {
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--muted);
}

@media (min-width: 900px) {
  .page-home .hero__inner {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: var(--gutter);
    align-items: end;
  }

  .page-home .hero__lead {
    grid-column: 1 / span 7;
  }

  .page-home .hero__visual {
    grid-column: 8 / -1;
    transform: translateY(-18px);
  }

  .page-home .hero__chapters {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1280px) {
  .page-home .hero__vnote {
    display: block;
  }
}

/* ---------- 02 轮次索引 ---------- */

.page-home .rounds {
  background: var(--ink);
  padding-bottom: clamp(48px, 9vh, 104px);
}

.page-home .rounds__banner {
  position: relative;
  margin: 0;
  height: clamp(170px, 28vh, 320px);
  overflow: hidden;
}

.page-home .rounds__banner img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.62) brightness(.6);
}

.page-home .rounds__banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(11, 31, 26, .4) 0%, rgba(11, 31, 26, .86) 62%, var(--ink) 100%);
  pointer-events: none;
}

.page-home .rounds__head {
  padding-top: clamp(32px, 6vh, 64px);
  padding-bottom: clamp(24px, 4vh, 44px);
}

.page-home .rounds__head .lede {
  max-width: 40em;
}

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

.page-home .rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 10px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--cyan) transparent;
  -webkit-overflow-scrolling: touch;
}

.page-home .rail__list::-webkit-scrollbar {
  height: 6px;
}

.page-home .rail__list::-webkit-scrollbar-thumb {
  background: var(--cyan);
}

.page-home .rail__item {
  flex: 0 0 auto;
}

.page-home .rail__link {
  display: block;
  min-width: 116px;
  padding: 10px 12px 12px;
  border: 1px solid var(--grid-line);
  background: var(--panel);
  color: var(--text);
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  transition: border-color var(--base) var(--ease), background var(--base) var(--ease);
}

.page-home .rail__link:hover,
.page-home .rail__link:focus-visible {
  border-color: var(--amber);
  background: var(--amber-12);
}

.page-home .rail__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .02em;
  line-height: 1.2;
  color: var(--amber);
}

.page-home .rail__meta {
  display: block;
  margin-top: 2px;
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-home .rail__tip {
  display: block;
  max-height: 0;
  margin-top: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 12px;
  line-height: 1.65;
  color: var(--muted);
  transition: max-height var(--base) var(--ease), opacity var(--base) var(--ease), margin-top var(--base) var(--ease);
}

.page-home .rail__link:hover .rail__tip,
.page-home .rail__link:focus-visible .rail__tip {
  max-height: 140px;
  margin-top: 8px;
  opacity: 1;
}

.page-home .rounds__subtitle {
  margin: 0 0 16px;
  font-family: var(--font-condensed);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-home .entry-kinds {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  border-top: 1px solid var(--grid-line);
}

.page-home .entry-kinds__item {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--grid-line);
}

.page-home .entry-kinds__k {
  font-family: var(--font-condensed);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--amber);
}

.page-home .entry-kinds__v {
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

@media (min-width: 640px) {
  .page-home .entry-kinds__item {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-home .rounds__rail {
    grid-template-columns: 116px minmax(0, 1fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }

  .page-home .rail__list {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-home .rail__link {
    min-width: 0;
  }
}

/* ---------- 03 技术统计 ---------- */

.page-home .tech {
  position: relative;
  overflow: hidden;
  padding-block: clamp(64px, 12vh, 132px) clamp(56px, 10vh, 112px);
  background: var(--deep);
}

.page-home .tech::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: clamp(28px, 5vw, 60px);
  background: var(--ink);
  clip-path: polygon(0 0, 100% 0, 0 100%);
  pointer-events: none;
}

.page-home .tech .lede {
  max-width: 42em;
}

.page-home .tech__grid {
  display: grid;
  gap: 18px;
  margin-top: clamp(28px, 4vh, 48px);
}

.page-home .tech__item {
  position: relative;
  padding: 26px 22px 24px;
  background-color: var(--panel);
  background-repeat: no-repeat;
  background-size: 100% 3px;
  background-position: top left;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-home .tech__item--cyan {
  background-image: linear-gradient(90deg, var(--cyan), rgba(79, 209, 224, .3));
}

.page-home .tech__item--amber {
  background-image: linear-gradient(90deg, var(--amber), rgba(255, 177, 59, .3));
}

.page-home .tech__item--gold {
  background-image: linear-gradient(90deg, var(--gold-a), var(--gold-b));
}

.page-home .tech__key {
  margin: 0;
  font-family: var(--font-condensed);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-home .tech__big {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(52px, 8vw, 96px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--text);
}

.page-home .tech__item--amber .tech__big {
  text-shadow: 0 0 16px rgba(255, 177, 59, .25);
}

.page-home .tech__unit {
  margin: 4px 0 0;
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--muted);
}

.page-home .tech__desc {
  margin: 14px 0 18px;
  max-width: 30em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

.page-home .tech__link {
  display: inline-block;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--base) var(--ease), color var(--base) var(--ease);
}

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

.page-home .tech__visual {
  margin: 0;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-home .tech__visual img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 220px;
  object-fit: cover;
  filter: saturate(.55) brightness(.7);
}

@media (min-width: 980px) {
  .page-home .tech__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: var(--gutter);
    row-gap: 16px;
  }

  .page-home .tech__item {
    grid-column: 1 / span 6;
  }

  .page-home .tech__visual {
    grid-column: 8 / -1;
    grid-row: 1 / span 3;
    align-self: stretch;
  }
}

/* ---------- 04 校订方式 ---------- */

.page-home .method {
  background: var(--ink);
  padding-block: clamp(56px, 10vh, 120px);
}

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

.page-home .method__visual {
  margin: 0;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}

.page-home .method__visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  filter: saturate(.6) brightness(.74);
}

.page-home .method__body .lede {
  max-width: 36em;
}

.page-home .steps {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
}

.page-home .steps__item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0;
  border-top: 1px solid var(--grid-line);
}

.page-home .steps__item:last-child {
  border-bottom: 1px solid var(--grid-line);
}

.page-home .steps__num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: .02em;
  color: var(--amber);
}

.page-home .steps__title {
  margin: 0 0 6px;
  font-family: var(--font-condensed);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-home .steps__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-home .version {
  margin-top: 30px;
  padding: 22px 20px 24px;
  background: var(--panel);
  border-left: 3px solid var(--amber);
}

.page-home .version__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--muted);
}

.page-home .version__code {
  margin: 8px 0 12px;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.4vw, 38px);
  font-weight: 700;
  letter-spacing: .02em;
  line-height: 1.2;
  color: var(--amber);
  text-shadow: 0 0 14px rgba(255, 177, 59, .3);
  word-break: break-all;
}

.page-home .version__note {
  margin: 0;
  max-width: 40em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

@media (min-width: 900px) {
  .page-home .method__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: clamp(32px, 5vw, 76px);
    align-items: start;
  }

  .page-home .method__visual {
    position: sticky;
    top: calc(var(--header-h) + 32px);
  }

  .page-home .steps__item {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 20px;
  }
}

/* ---------- 05 索引与来源 ---------- */

.page-home .archive {
  background: var(--ink);
  padding-block: clamp(56px, 10vh, 120px);
  border-top: 1px solid var(--grid-line);
}

.page-home .archive .lede {
  max-width: 42em;
}

.page-home .index-list {
  list-style: none;
  margin: clamp(24px, 4vh, 40px) 0 0;
  padding: 0;
  border-top: 1px solid var(--grid-line);
}

.page-home .index-list__item {
  border-bottom: 1px solid var(--grid-line);
}

.page-home .index-list__link {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px 20px;
  padding: 20px 8px;
  color: var(--text);
  text-decoration: none;
  transition: background var(--base) var(--ease);
}

.page-home .index-list__link:hover,
.page-home .index-list__link:focus-visible {
  background: var(--amber-12);
}

.page-home .index-list__name {
  grid-column: 1;
  font-family: var(--font-condensed);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -.01em;
}

.page-home .index-list__desc {
  grid-column: 1;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-home .index-list__arrow {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--cyan);
  transition: transform var(--base) var(--ease);
}

.page-home .index-list__link:hover .index-list__arrow,
.page-home .index-list__link:focus-visible .index-list__arrow {
  transform: translateX(4px);
}

.page-home .source-sample {
  margin-top: clamp(32px, 5vh, 52px);
  padding: 24px 22px 26px;
  background: var(--panel);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-home .source-sample__label {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--muted);
}

.page-home .source-sample__note {
  margin: 14px 0 0;
  max-width: 44em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 收束 ---------- */

.page-home .outro {
  background: var(--deep);
  padding-block: clamp(44px, 8vh, 88px);
}

.page-home .outro__inner {
  display: grid;
  gap: 24px;
}

.page-home .outro__lead .eyebrow {
  margin-bottom: 10px;
}

.page-home .outro__text {
  margin: 12px 0 0;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
}

.page-home .outro__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 900px) {
  .page-home .outro__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 40px;
  }
}
<<<END>>>