/* ==========================================================================
   易丰游艺 · 共享样式 /assets/site.css
   印刷目录 × 高原色块：砂砾米纸底、湖蓝主题带、日落橙费用强调
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root {
  --lake: #0F5C8C;
  --lake-deep: #0A3D5E;
  --sunset: #E4632A;
  --sunset-soft: #F5A45F;
  --barley: #4E7A38;
  --sand: #F3E9D6;
  --cream: #FCF7EE;
  --ink: #2A2018;
  --rule: #C8BEA6;
  --clay: #B23A2E;

  --font-head: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: ui-monospace, "Roboto Mono", "SFMono-Regular", Menlo, Consolas, monospace;

  --wrap-max: 1180px;
  --gutter: clamp(18px, 4vw, 40px);
  --gap: clamp(18px, 2.4vw, 32px);
  --radius: 2px;

  --shadow-paper: 0 1px 0 var(--rule), 0 12px 26px -20px rgba(42, 32, 24, 0.6);
  --shadow-lift: 0 18px 34px -22px rgba(42, 32, 24, 0.72);
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 122px;
}

body,
h1, h2, h3, h4, h5, h6,
p, figure, blockquote, dl, dd, ul, ol { margin: 0; }

ul, ol { padding: 0; list-style: none; }

img, svg, video { display: block; max-width: 100%; }

a { color: inherit; }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
}

table { border-collapse: collapse; width: 100%; }

[hidden] { display: none !important; }

:focus-visible {
  outline: 3px solid var(--sunset);
  outline-offset: 2px;
  border-radius: 2px;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 3. 中文排版基座 ---------- */
body {
  background-color: var(--sand);
  background-image:
    linear-gradient(135deg, rgba(15, 92, 140, 0.05) 0%, rgba(15, 92, 140, 0) 42%),
    linear-gradient(315deg, rgba(228, 99, 42, 0.05) 0%, rgba(228, 99, 42, 0) 38%);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: clamp(17px, 0.42vw + 15.4px, 19px);
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.01em;
  text-align: left;
  color: var(--ink);
}

h1 { font-size: clamp(34px, 5vw, 68px); }
h2 { font-size: clamp(25px, 3vw, 40px); }
h3 { font-size: clamp(20px, 1.6vw, 26px); }
h4 { font-size: clamp(17px, 1.2vw, 20px); }

p { max-width: 40em; }

.num {
  font-family: var(--font-mono);
  font-size: 1.12em;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

/* ---------- 4. 布局容器 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(36px, 5vw, 72px); }
.section--tight { padding-block: clamp(22px, 3vw, 40px); }
.section--tint {
  background-color: var(--cream);
  border-block: 1px solid var(--rule);
}
.section--deep {
  background-color: var(--lake-deep);
  color: var(--cream);
}
.section--deep h2,
.section--deep h3 { color: var(--cream); }

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: clamp(22px, 3vw, 38px);
  padding-bottom: 14px;
  border-bottom: 2px solid var(--ink);
}
.section--deep .section__head { border-bottom-color: rgba(252, 247, 238, 0.4); }
.section__title { max-width: 22em; }
.section__lede {
  max-width: 34em;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(42, 32, 24, 0.74);
}
.section--deep .section__lede { color: rgba(252, 247, 238, 0.76); }

/* ---------- 5. 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 11px 18px;
  background-color: var(--sunset);
  color: var(--cream);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.12em;
  text-decoration: none;
  border-radius: var(--radius);
  transform: translateY(-180%);
  transition: transform 0.2s var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 6. 页头：双层结构 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background-color: var(--sand);
  border-bottom: 1px solid var(--rule);
}

.header-top {
  background-color: var(--lake-deep);
  color: var(--cream);
  max-height: 300px;
  overflow: hidden;
  transition: max-height 0.32s var(--ease), opacity 0.22s var(--ease);
}
.site-header.is-condensed .header-top {
  max-height: 0;
  opacity: 0;
}

.header-top__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: clamp(14px, 2.4vw, 36px);
  padding-block: clamp(14px, 1.7vw, 22px);
}

.brand {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: clamp(12px, 2vw, 26px);
}
.brand__link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--cream);
}
.brand__mark {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  background-color: var(--sunset);
  color: var(--cream);
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 20px;
  line-height: 1;
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%);
}
.brand__text { display: block; }
.brand__name {
  display: block;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(19px, 1.5vw, 23px);
  letter-spacing: 0.08em;
  line-height: 1.2;
}
.brand__tag {
  display: block;
  margin-top: 3px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: #9CC3DC;
}
.brand__sub {
  max-width: 20em;
  padding-left: clamp(12px, 1.6vw, 18px);
  border-left: 1px solid rgba(252, 247, 238, 0.28);
  font-size: 14px;
  line-height: 1.6;
  letter-spacing: 0.05em;
  color: rgba(252, 247, 238, 0.74);
}

.utility {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.utility__link {
  display: inline-block;
  padding: 7px 14px;
  font-size: 13px;
  letter-spacing: 0.12em;
  white-space: nowrap;
  text-decoration: none;
  color: var(--cream);
  background-color: transparent;
  border: 1px solid rgba(252, 247, 238, 0.34);
  border-radius: var(--radius);
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.utility__link:hover {
  background-color: var(--cream);
  color: var(--lake-deep);
  border-color: var(--cream);
}
.utility__link--accent {
  background-color: var(--sunset);
  border-color: var(--sunset);
  color: var(--cream);
  font-weight: 700;
}
.utility__link--accent:hover {
  background-color: var(--sunset-soft);
  border-color: var(--sunset-soft);
  color: var(--ink);
}
.utility__link--static {
  cursor: default;
  border-style: dashed;
  color: rgba(252, 247, 238, 0.7);
}
.utility__link--static:hover {
  background-color: transparent;
  color: rgba(252, 247, 238, 0.7);
  border-color: rgba(252, 247, 238, 0.34);
}

.header-nav {
  position: relative;
  background-color: var(--lake);
  color: var(--cream);
  border-top: 1px solid rgba(252, 247, 238, 0.14);
}
.header-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 56px;
}
.header-nav__meta {
  flex: 0 0 auto;
  max-width: none;
  font-size: 12px;
  letter-spacing: 0.18em;
  white-space: nowrap;
  color: rgba(252, 247, 238, 0.66);
}

.site-nav { display: block; }
.site-nav__list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 2px;
}
.site-nav__link {
  display: block;
  padding: 10px 15px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-decoration: none;
  color: var(--cream);
  border-bottom: 3px solid transparent;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.site-nav__link:hover { background-color: rgba(252, 247, 238, 0.14); }
.site-nav__link[aria-current="page"] {
  background-color: var(--cream);
  color: var(--lake-deep);
  font-weight: 900;
  border-bottom-color: var(--sunset);
}
.site-nav__link:focus-visible {
  outline: 3px solid var(--sunset-soft);
  outline-offset: -3px;
}

.nav-toggle { display: none; }

.scroll-rail {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background-color: rgba(252, 247, 238, 0.18);
  overflow: hidden;
}
.scroll-rail__fill {
  display: block;
  width: 100%;
  height: 100%;
  background-image: linear-gradient(90deg, var(--sunset-soft), var(--sunset));
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 0.12s linear;
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  margin-top: clamp(48px, 7vw, 96px);
  background-color: var(--lake-deep);
  color: var(--cream);
  border-top: 6px solid var(--sunset);
}

.footer-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr);
  gap: clamp(26px, 4vw, 64px);
  padding-block: clamp(34px, 5vw, 60px) clamp(20px, 3vw, 34px);
}
.footer-brand__name {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 24px;
  letter-spacing: 0.1em;
}
.footer-brand__line {
  margin-top: 6px;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--sunset-soft);
}
.footer-summary {
  margin-top: 14px;
  max-width: 28em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(252, 247, 238, 0.78);
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 32px);
}
.footer-col__title {
  margin-bottom: 12px;
  padding-bottom: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--cream);
  border-bottom: 1px solid rgba(252, 247, 238, 0.24);
}
.footer-col__list { display: grid; gap: 9px; }
.footer-col__link {
  display: inline-block;
  font-size: 15px;
  line-height: 1.5;
  text-decoration: none;
  color: rgba(252, 247, 238, 0.82);
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.footer-col__link:hover {
  color: var(--sunset-soft);
  border-bottom-color: var(--sunset-soft);
}

.footer-contact { padding-block: 0 clamp(20px, 2.8vw, 32px); }
.footer-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 26px;
  max-width: none;
  padding-top: clamp(16px, 2vw, 22px);
  border-top: 1px solid rgba(252, 247, 238, 0.2);
  font-size: 15px;
}
.footer-contact__item {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}
.footer-contact__key {
  padding: 2px 7px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--sunset-soft);
  border: 1px solid rgba(245, 164, 95, 0.45);
  border-radius: var(--radius);
}
.footer-contact__value { color: rgba(252, 247, 238, 0.94); }
.footer-contact__value--mono {
  font-family: var(--font-mono);
  font-size: 0.95em;
  letter-spacing: 0.01em;
}
.footer-contact__note {
  margin-top: 12px;
  max-width: 46em;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(252, 247, 238, 0.62);
}

.footer-bottom {
  background-color: rgba(0, 0, 0, 0.2);
  border-top: 1px solid rgba(252, 247, 238, 0.16);
}
.footer-bottom__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 28px;
  padding-block: 16px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: rgba(252, 247, 238, 0.72);
}
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}
.footer-legal__link {
  text-decoration: none;
  color: rgba(252, 247, 238, 0.82);
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.footer-legal__link:hover {
  color: var(--sunset-soft);
  border-bottom-color: var(--sunset-soft);
}
.footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
  max-width: none;
}
.footer-meta__icp { letter-spacing: 0.1em; }
.footer-meta__copy { color: rgba(252, 247, 238, 0.66); }

/* ---------- 8. 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 24px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.12em;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform 0.18s var(--ease), background-color 0.18s var(--ease),
    color 0.18s var(--ease), border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}
.btn--solid {
  background-color: var(--lake);
  border-color: var(--lake);
  color: var(--cream);
}
.btn--solid:hover {
  background-color: var(--lake-deep);
  border-color: var(--lake-deep);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}
.btn--sunset {
  background-color: var(--sunset);
  border-color: var(--sunset);
  color: var(--cream);
}
.btn--sunset:hover {
  background-color: var(--sunset-soft);
  border-color: var(--sunset-soft);
  color: var(--ink);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}
.btn--line {
  background-color: transparent;
  border-color: var(--ink);
  color: var(--ink);
}
.btn--line:hover {
  background-color: var(--ink);
  color: var(--cream);
  transform: translateY(-2px);
}

/* ---------- 9. 面包屑 ---------- */
.crumbs { padding-top: 20px; }
.crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  font-size: 13px;
  letter-spacing: 0.08em;
}
.crumbs__item {
  display: inline-flex;
  align-items: center;
  color: rgba(42, 32, 24, 0.62);
}
.crumbs__item + .crumbs__item::before {
  content: "／";
  margin: 0 10px;
  color: var(--rule);
}
.crumbs__link {
  text-decoration: none;
  color: var(--lake);
  border-bottom: 1px solid transparent;
  transition: border-color 0.18s var(--ease);
}
.crumbs__link:hover { border-bottom-color: var(--lake); }
.crumbs__item[aria-current="page"] {
  color: var(--ink);
  font-weight: 700;
}

/* ---------- 10. 标签与引导词 ---------- */
.eyebrow {
  display: inline-block;
  padding: 4px 11px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--ink);
  background-color: var(--sunset-soft);
  border-radius: var(--radius);
}

.tag {
  display: inline-block;
  padding: 3px 9px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  line-height: 1.6;
  color: var(--ink);
  background-color: var(--cream);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}
.tag--lake {
  background-color: var(--lake);
  border-color: var(--lake);
  color: var(--cream);
}
.tag--sunset {
  background-color: var(--sunset);
  border-color: var(--sunset);
  color: var(--cream);
}
.tag--barley {
  background-color: var(--barley);
  border-color: var(--barley);
  color: var(--cream);
}
.tag--clay {
  background-color: var(--cream);
  border-color: var(--clay);
  color: var(--clay);
}

/* ---------- 11. 正文容器 ---------- */
.prose {
  max-width: 38em;
  font-size: inherit;
}
.prose > * + * { margin-top: 1.1em; }
.prose p { max-width: 38em; line-height: 1.85; }
.prose h2 { margin-top: 1.9em; font-size: clamp(22px, 2.4vw, 32px); }
.prose h3 { margin-top: 1.6em; }
.prose ul,
.prose ol {
  padding-left: 1.35em;
  list-style: disc;
}
.prose ol { list-style: decimal; }
.prose li + li { margin-top: 0.5em; }
.prose li::marker { color: var(--lake); }
.prose a {
  text-decoration: none;
  color: var(--lake);
  border-bottom: 1px solid rgba(15, 92, 140, 0.4);
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}
.prose a:hover {
  color: var(--lake-deep);
  border-bottom-color: var(--lake-deep);
}
.prose strong { font-weight: 900; }
.prose blockquote {
  padding: 14px 20px;
  border-left: 4px solid var(--sunset);
  background-color: var(--cream);
  color: rgba(42, 32, 24, 0.84);
}

/* ---------- 12. 网格 ---------- */
.grid { display: grid; gap: var(--gap); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ---------- 13. 纸张卡片 ---------- */
.card {
  position: relative;
  padding: clamp(18px, 2vw, 26px);
  background-color: var(--cream);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  box-shadow: var(--shadow-paper);
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease), border-color 0.22s var(--ease);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
  border-color: var(--ink);
}
.card__title {
  font-size: clamp(18px, 1.6vw, 22px);
  line-height: 1.3;
}
.card__meta {
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: rgba(42, 32, 24, 0.62);
}
.card__text {
  margin-top: 10px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(42, 32, 24, 0.78);
}

/* ---------- 14. 图片容器（响应式基础规则） ---------- */
.media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background-color: var(--cream);
  background-image: linear-gradient(135deg,
    rgba(15, 92, 140, 0.1) 0%,
    rgba(228, 99, 42, 0.1) 52%,
    rgba(78, 122, 56, 0.1) 100%);
}
.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--3x4 { aspect-ratio: 3 / 4; }
.media__caption {
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: rgba(42, 32, 24, 0.62);
}

/* ---------- 15. 分段切换 ---------- */
.seg {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 4px;
  background-color: var(--cream);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}
.seg__tab {
  padding: 9px 16px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--lake-deep);
  background-color: transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease), transform 0.18s var(--ease);
}
.seg__tab:hover { background-color: rgba(15, 92, 140, 0.12); }
.seg__tab[aria-selected="true"] {
  background-color: var(--lake);
  color: var(--cream);
  transform: translateX(2px);
}
.seg__panel { padding-top: 22px; }
.seg__panel[hidden] { display: none; }

/* ---------- 16. 响应式 ---------- */
@media (max-width: 1024px) {
  .footer-main { grid-template-columns: minmax(0, 1fr); }
  .footer-summary { max-width: 44em; }
}

@media (max-width: 900px) {
  .grid--3,
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 880px) {
  html { scroll-padding-top: 92px; }

  .header-top__inner { align-items: flex-start; }
  .brand__sub { display: none; }
  .brand__mark { width: 38px; height: 38px; font-size: 18px; }

  .header-nav__inner {
    min-height: 52px;
    flex-wrap: nowrap;
    justify-content: space-between;
  }
  .header-nav__meta { display: none; }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 9px 14px;
    font-size: 14px;
    letter-spacing: 0.12em;
    color: var(--cream);
    border: 1px solid rgba(252, 247, 238, 0.4);
    border-radius: var(--radius);
    cursor: pointer;
    transition: background-color 0.18s var(--ease);
  }
  .nav-toggle:hover { background-color: rgba(252, 247, 238, 0.14); }
  .nav-toggle__label { white-space: nowrap; }
  .nav-toggle__bars {
    position: relative;
    display: block;
    width: 18px;
    height: 2px;
    background-color: var(--cream);
    transition: background-color 0.18s var(--ease);
  }
  .nav-toggle__bars::before,
  .nav-toggle__bars::after {
    content: "";
    position: absolute;
    left: 0;
    width: 18px;
    height: 2px;
    background-color: var(--cream);
    transition: transform 0.22s var(--ease), top 0.22s var(--ease);
  }
  .nav-toggle__bars::before { top: -6px; }
  .nav-toggle__bars::after { top: 6px; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bars { background-color: transparent; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { top: 0; transform: rotate(-45deg); }

  .site-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    z-index: 5;
    max-height: calc(100vh - 130px);
    overflow-y: auto;
    padding: 10px var(--gutter) 18px;
    background-color: var(--lake-deep);
    border-top: 1px solid rgba(252, 247, 238, 0.2);
    box-shadow: 0 22px 34px -24px rgba(10, 61, 94, 0.95);
  }
  .site-nav[data-open] { display: block; }
  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .site-nav__link {
    padding: 14px 6px;
    font-size: 17px;
    border-bottom: 1px solid rgba(252, 247, 238, 0.14);
    border-left: 3px solid transparent;
  }
  .site-nav__link:hover { background-color: rgba(252, 247, 238, 0.1); }
  .site-nav__link[aria-current="page"] {
    background-color: transparent;
    color: var(--sunset-soft);
    border-bottom-color: rgba(252, 247, 238, 0.14);
    border-left-color: var(--sunset);
    padding-left: 14px;
  }
}

@media (max-width: 600px) {
  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: minmax(0, 1fr); }

  .media--3x4 { aspect-ratio: 4 / 5; }

  .utility { width: 100%; }
  .utility__link { padding: 6px 11px; font-size: 12px; }

  .footer-cols { grid-template-columns: minmax(0, 1fr); }
  .footer-bottom__inner { justify-content: flex-start; }
  .section__head { align-items: flex-start; }
}

/* ---------- 17. 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .card:hover { transform: none; }
  .btn:hover { transform: none; }
  .scroll-rail__fill { transition: none; }
}