.page-home {
  --home-axis-w: 28px;
  padding-top: calc(var(--bar-h) + 20px);
  padding-bottom: 64px;
  background: var(--c-paper);
  color: var(--c-text);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-home img {
  max-width: 100%;
  height: auto;
}

.page-home figure {
  margin: 0;
}

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

.page-home .sec-head {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: end;
  gap: 10px 14px;
  border-top: 1px solid var(--c-rule);
  padding-top: 14px;
  margin-bottom: 22px;
}

.page-home .sec-head__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(30px, 7vw, 44px);
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--c-clay);
}

.page-home .sec-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.25;
  font-size: clamp(21px, 4.4vw, 32px);
  color: var(--c-ink);
}

.page-home .section {
  margin-top: 60px;
}

/* ---------- 首屏闸门 ---------- */
.page-home .gate {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 20px;
}

.page-home .gate__bg {
  position: absolute;
  top: -34px;
  right: -12%;
  width: min(460px, 78%);
  height: auto;
  opacity: 0.09;
  pointer-events: none;
  z-index: 0;
}

.page-home .gate__intro,
.page-home .gate__door,
.page-home .gate__hint,
.page-home .gate__axis {
  position: relative;
  z-index: 1;
}

.page-home .gate__intro h1 {
  margin: 8px 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.025em;
  line-height: 1.16;
  font-size: clamp(28px, 7.2vw, 50px);
  color: var(--c-ink);
}

.page-home .gate__lead {
  margin: 0;
  max-width: 54ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-text);
}

.page-home .gate__door {
  background: var(--c-card);
  border: 1px solid var(--c-rule);
  padding: 22px 20px 24px;
  overflow: hidden;
  transition: box-shadow 0.28s var(--ease), transform 0.28s var(--ease);
}

.page-home .gate__door::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 4px;
}

.page-home .gate__door--query::before {
  background: var(--c-coral);
}

.page-home .gate__door--dl::before {
  background: var(--c-celadon);
}

.page-home .gate__door::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.4s var(--ease);
}

.page-home .gate__door--query::after {
  background: var(--c-coral);
}

.page-home .gate__door--dl::after {
  background: var(--c-celadon);
}

.page-home .gate__door:hover,
.page-home .gate__door:focus-within {
  box-shadow: var(--shadow-1);
  transform: translateY(-2px);
}

.page-home .gate__door:hover::after,
.page-home .gate__door:focus-within::after {
  transform: scaleX(1);
}

.page-home .door__tag {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-home .gate__door--query .door__tag {
  color: var(--c-coral-dk);
}

.page-home .gate__door--dl .door__tag {
  color: var(--c-celadon-dk);
}

.page-home .door__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.3;
  font-size: clamp(19px, 4.6vw, 25px);
  color: var(--c-ink);
}

.page-home .door__text {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text);
}

.page-home .door__list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 7px;
}

.page-home .door__list li {
  position: relative;
  padding-left: 15px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-slate);
}

.page-home .door__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 6px;
}

.page-home .gate__door--query .door__list li::before {
  background: var(--c-coral-lt);
}

.page-home .gate__door--dl .door__list li::before {
  background: var(--c-celadon-lt);
}

.page-home .gate__door .btn {
  margin-top: 2px;
}

.page-home .gate__axis {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 2px 0;
}

.page-home .axis__line {
  flex: 1;
  height: 1px;
  background: var(--c-rule);
}

.page-home .axis__stamp {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-clay);
  white-space: nowrap;
}

.page-home .axis__meta {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--c-slate);
  white-space: nowrap;
}

.page-home .gate__hint {
  margin: 4px 0 0;
  padding: 13px 16px;
  background: rgba(194, 78, 39, 0.07);
  border-left: 3px solid var(--c-coral);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-text);
}

.page-home .gate__hint strong {
  font-family: var(--font-display);
  color: var(--c-coral-dk);
}

.page-home .gate__hint a {
  color: var(--c-coral-dk);
  font-weight: 700;
  margin-left: 4px;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

/* ---------- 01 内容中心路径 ---------- */
.page-home .start {
  display: grid;
  gap: 26px;
}

.page-home .start__text p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--c-text);
}

.page-home .steps {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-home .steps li {
  border-top: 1px solid var(--c-rule);
  padding-top: 12px;
}

.page-home .steps__num {
  display: inline-block;
  margin-bottom: 8px;
  padding: 1px 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--c-celadon-dk);
  border: 1px solid var(--c-celadon-lt);
}

.page-home .steps h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16.5px;
  letter-spacing: -0.01em;
  color: var(--c-ink);
}

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

.page-home .start__note {
  margin: 0;
  padding: 14px 16px;
  background: var(--c-card);
  border: 1px solid var(--c-rule);
  border-top: 3px solid var(--c-celadon);
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--c-text);
}

.page-home .start__fig .media__caption,
.page-home .catalog__fig .media__caption,
.page-home .batch__fig .media__caption {
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--c-slate);
}

/* ---------- 02 栏目清单 ---------- */
.page-home .catalog__lead {
  margin: 0 0 18px;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-slate);
}

.page-home .catalog {
  display: grid;
  gap: 16px;
  align-items: start;
}

.page-home .catalog__col {
  background: var(--c-card);
  border: 1px solid var(--c-rule);
}

.page-home .catalog__col--query {
  border-top: 3px solid var(--c-coral);
}

.page-home .catalog__col--dl {
  border-top: 3px solid var(--c-celadon);
}

.page-home .catalog__col summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 16.5px;
  letter-spacing: -0.01em;
  color: var(--c-ink);
}

.page-home .catalog__col summary::-webkit-details-marker {
  display: none;
}

.page-home .catalog__col summary::after {
  content: "＋";
  font-family: var(--font-mono);
  font-weight: 400;
  color: var(--c-slate);
}

.page-home .catalog__col[open] summary::after {
  content: "－";
}

.page-home .catalog__col[open] summary {
  border-bottom: 1px solid var(--c-rule);
}

.page-home .catalog__count {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--c-slate);
}

.page-home .cat-list {
  list-style: none;
  margin: 0;
  padding: 4px 16px 14px;
}

.page-home .cat-item {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 3px 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--c-rule);
}

.page-home .cat-item:last-child {
  border-bottom: 0;
}

.page-home .cat-item__code {
  grid-column: 1;
  grid-row: 1 / span 2;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--c-clay);
}

.page-home .cat-item > div {
  grid-column: 2;
}

.page-home .cat-item__name {
  margin: 0 0 3px;
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--c-ink);
}

.page-home .cat-item__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--c-slate);
}

.page-home .cat-item .tag {
  grid-column: 2;
  justify-self: start;
  margin-top: 5px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
}

.page-home .catalog__fig {
  margin-top: 22px;
}

/* ---------- 03 收藏 ---------- */
.page-home .keep {
  display: grid;
  gap: 22px;
}

.page-home .keep__lead {
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--c-text);
}

.page-home .keep__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-home .keep__item {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  padding: 13px 0;
  border-bottom: 1px solid var(--c-rule);
}

.page-home .keep__item:first-child {
  border-top: 1px solid var(--c-rule);
}

.page-home .keep__dot {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--c-coral);
}

.page-home .keep__item h3 {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: 15.5px;
  color: var(--c-ink);
}

.page-home .keep__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-slate);
}

.page-home .keep__how {
  background: var(--c-ink);
  border: 1px solid var(--c-ink-2);
  padding: 22px 20px;
  color: var(--c-paper);
}

.page-home .keep__how-title {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--c-paper);
}

.page-home .keep__how ul {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-home .keep__how li {
  position: relative;
  padding-left: 14px;
  font-size: 13.8px;
  line-height: 1.75;
  color: rgba(244, 239, 230, 0.86);
}

.page-home .keep__how li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 1px;
  background: var(--c-celadon-lt);
}

.page-home kbd {
  display: inline-block;
  padding: 1px 5px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--c-paper);
  background: rgba(251, 248, 242, 0.12);
  border: 1px solid rgba(251, 248, 242, 0.32);
  border-radius: 2px;
}

/* ---------- 04 批次 ---------- */
.page-home .batch {
  display: grid;
  gap: 24px;
}

.page-home .batch__text p {
  margin: 0 0 15px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--c-text);
}

.page-home .batch__copy {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin: 0 0 18px;
}

.page-home .copy-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--c-clay);
  background: var(--c-card);
  border: 1px solid var(--c-clay);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-home .copy-chip:hover {
  background: var(--c-clay);
  color: var(--c-card);
}

.page-home .copy-chip__hint {
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0;
  opacity: 0.82;
}

.page-home .batch__copy-note {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--c-slate);
}

.page-home .batch__link {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-coral-dk);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

/* ---------- 05 帮助与动态 ---------- */
.page-home .help {
  display: grid;
  gap: 18px;
}

.page-home .help__col {
  padding: 20px 18px 22px;
  background: var(--c-card);
  border: 1px solid var(--c-rule);
}

.page-home .help__col--faq {
  border-left: 3px solid var(--c-coral);
}

.page-home .help__col--feed {
  border-left: 3px solid var(--c-celadon);
}

.page-home .help__col h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 16.5px;
  letter-spacing: -0.01em;
  color: var(--c-ink);
}

.page-home .help__col ul {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-home .help__col li {
  position: relative;
  padding-left: 15px;
  font-size: 14px;
  line-height: 1.68;
  color: var(--c-text);
}

.page-home .help__col li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 6px;
  height: 1px;
  background: var(--c-slate);
}

.page-home .help__time {
  display: inline-block;
  margin-right: 7px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--c-clay);
}

.page-home .help__note {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--c-slate);
}

.page-home .help__col a {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-home .help__col--faq a {
  color: var(--c-coral-dk);
}

.page-home .help__col--feed a {
  color: var(--c-celadon-dk);
}

/* ---------- 收尾 ---------- */
.page-home .outro {
  margin-top: 54px;
  padding: clamp(24px, 5vw, 44px);
  background: var(--c-ink);
  border-top: 3px solid var(--c-celadon);
}

.page-home .outro__kicker {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--c-coral-lt);
}

.page-home .outro h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.28;
  font-size: clamp(20px, 4.2vw, 30px);
  color: var(--c-paper);
}

.page-home .outro p {
  margin: 0 0 12px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.88;
  color: rgba(244, 239, 230, 0.84);
}

.page-home .outro__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.page-home .outro__links a {
  display: inline-block;
  padding: 10px 18px;
  font-family: var(--font-display);
  font-size: 14px;
  color: var(--c-paper);
  text-decoration: none;
  border: 1px solid rgba(244, 239, 230, 0.38);
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-home .outro__links a:hover {
  background: var(--c-coral);
  border-color: var(--c-coral);
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 720px) {
  .page-home .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 900px) {
  .page-home .gate {
    grid-template-columns: minmax(0, 7fr) var(--home-axis-w) minmax(0, 5fr);
    gap: 0;
    align-items: stretch;
  }

  .page-home .gate__intro {
    grid-column: 1 / -1;
    margin-bottom: 22px;
    padding-right: 8%;
  }

  .page-home .gate__bg {
    top: -22px;
    right: -4%;
    width: min(560px, 40%);
  }

  .page-home .gate__door--query {
    margin-right: 18px;
  }

  .page-home .gate__door--dl {
    margin-left: 18px;
  }

  .page-home .gate__axis {
    flex-direction: column;
    justify-content: center;
    gap: 12px;
    padding: 0;
  }

  .page-home .axis__line {
    flex: 1;
    width: 1px;
    height: auto;
    background: var(--c-rule);
  }

  .page-home .axis__stamp,
  .page-home .axis__meta {
    writing-mode: vertical-rl;
    text-orientation: mixed;
  }

  .page-home .axis__stamp {
    font-size: 12px;
    letter-spacing: 0.16em;
  }

  .page-home .axis__meta {
    font-size: 10px;
    letter-spacing: 0.24em;
  }

  .page-home .gate__hint {
    grid-column: 1 / -1;
    margin-top: 22px;
  }

  .page-home .start {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 36px;
    align-items: start;
  }

  .page-home .catalog {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .page-home .catalog__fig {
    margin-top: 26px;
  }

  .page-home .keep {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 32px;
    align-items: start;
  }

  .page-home .keep__how {
    position: sticky;
    top: calc(var(--bar-h) + 20px);
  }

  .page-home .batch {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 36px;
    align-items: center;
  }

  .page-home .help {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }
}

@media (min-width: 1120px) {
  .page-home .gate__intro h1 {
    max-width: 20ch;
  }

  .page-home .gate__door {
    padding: 26px 26px 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .gate__door,
  .page-home .gate__door::after,
  .page-home .copy-chip,
  .page-home .outro__links a {
    transition: none;
  }

  .page-home .gate__door:hover,
  .page-home .gate__door:focus-within {
    transform: none;
  }
}