/* ==========================================================================
   /assets/site.css — 四季娱乐官网共享样式
   技术蓝图网格 + 四叶分区 + 粗野主义边框，前强后稳
   ========================================================================== */

:root {
  /* 色彩 */
  --clover: #2F7D4F;
  --ink: #0F241B;
  --moss: #5E9468;
  --spring: #B9E36F;
  --gold: #D9A441;
  --summer: #6FB6C7;
  --autumn: #C9783D;
  --mist: #F1F5EE;
  --paper: #FBFCF7;
  --line: #C4D3C4;

  --clover-soft: rgba(47, 125, 79, 0.10);
  --clover-line: rgba(47, 125, 79, 0.24);
  --grid-line: rgba(47, 125, 79, 0.075);

  /* 文字 */
  --text: #1B2E24;
  --text-soft: #33483C;

  /* 字体 */
  --font-display: "Alibaba PuHuiTi 3.0", "Noto Sans SC", "PingFang SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  /* 结构 */
  --shadow-hard: 6px 6px 0 var(--ink);
  --shadow-soft: 6px 6px 0 rgba(196, 211, 196, 0.85);
  --radius-card: 14px;
  --radius-pill: 999px;
  --max-wide: 1440px;
  --max-base: 1280px;
  --max-narrow: 780px;
}

/* ---------- 基础重置 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--text);
  background-color: var(--mist);
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: 96px 96px;
}

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

button,
input,
select,
textarea { font: inherit; color: inherit; }

a {
  color: var(--clover);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover { color: var(--ink); }

::selection {
  background: var(--spring);
  color: var(--ink);
}

:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
  border-radius: 4px;
}

#main-content { scroll-margin-top: 104px; }

/* ---------- 中文排版 ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--ink);
  margin: 0 0 0.55em;
  text-wrap: balance;
}

h1 { font-size: clamp(34px, 5vw, 60px); }
h2 { font-size: clamp(26px, 3.2vw, 38px); }
h3 { font-size: clamp(20px, 2.2vw, 26px); }
h4 { font-size: clamp(17px, 1.6vw, 20px); }

p { margin: 0 0 1.1em; }

ul, ol { margin: 0 0 1.1em; padding-left: 1.25em; }

li { margin-bottom: 0.35em; }

hr { border: 0; }

/* ---------- 跳过链接 ---------- */
.skip-link {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translate(-50%, -160%);
  z-index: 200;
  padding: 10px 20px;
  background: var(--ink);
  color: var(--paper);
  border: 2px solid var(--gold);
  border-top: 0;
  border-radius: 0 0 12px 12px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.18s ease;
}

.skip-link:focus,
.skip-link:focus-visible { transform: translate(-50%, 0); color: var(--paper); }

/* ---------- 容器与栅格 ---------- */
.container {
  width: 100%;
  max-width: var(--max-base);
  margin-inline: auto;
  padding-inline: 24px;
}

.container--narrow { max-width: var(--max-narrow); }
.container--wide { max-width: var(--max-wide); }

.section { padding-block: clamp(44px, 6.5vw, 92px); }

.grid { display: grid; gap: 24px; }
.grid--two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--7-5 { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
.grid--8-4 { grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); }

/* ---------- 文本零件 ---------- */
.lead {
  font-size: clamp(16.5px, 1.6vw, 19px);
  line-height: 1.8;
  color: var(--text-soft);
  max-width: 64ch;
}

.mono {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--moss);
}

.note {
  font-size: 13px;
  line-height: 1.7;
  color: var(--moss);
  border-left: 2px solid var(--line);
  padding-left: 12px;
  margin: 0 0 1.1em;
}

.rule {
  height: 1px;
  background: var(--line);
  border: 0;
  margin-block: 28px;
}

/* ---------- 章节标题 ---------- */
.section__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin-bottom: 20px;
}

.section__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--clover);
  background: var(--paper);
  border: 1px solid var(--clover-line);
  border-radius: 6px;
  padding: 2px 9px;
}

.section__title { margin: 0; font-size: clamp(23px, 3vw, 34px); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 2px solid var(--ink);
  border-radius: var(--radius-pill);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.3;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.btn--primary {
  background: var(--clover);
  color: var(--paper);
  box-shadow: 4px 4px 0 var(--ink);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: #256a41;
  color: var(--paper);
  transform: translateY(-2px);
  box-shadow: 6px 6px 0 var(--ink);
}

.btn--ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
  box-shadow: none;
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: var(--clover);
  background: var(--clover-soft);
  transform: translateY(-2px);
}

.btn--small { padding: 8px 15px; font-size: 13.5px; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--paper);
  border: 2px solid var(--ink);
  border-radius: var(--radius-card);
  padding: 22px;
  box-shadow: var(--shadow-soft);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.card:hover,
.card:focus-within {
  transform: translateY(-2px);
  border-color: var(--clover);
  box-shadow: 6px 8px 0 rgba(47, 125, 79, 0.28);
}

.card__title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.35;
  margin: 0 0 6px;
  color: var(--ink);
}

.card__meta {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--moss);
  margin: 0;
}

/* ---------- 标签与筛选 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 6px;
  border: 1px solid var(--clover-line);
  background: var(--clover-soft);
  color: #1E4F33;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  line-height: 1.5;
}

.tag--spring { background: rgba(185, 227, 111, 0.32); color: #3E5A12; border-color: rgba(185, 227, 111, 0.9); }
.tag--summer { background: rgba(111, 182, 199, 0.24); color: #1E4A55; border-color: rgba(111, 182, 199, 0.8); }
.tag--autumn { background: rgba(201, 120, 61, 0.20); color: #7A3D12; border-color: rgba(201, 120, 61, 0.65); }
.tag--winter { background: var(--paper); color: #3A4A42; border-color: var(--line); }

.pill-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.pill {
  appearance: none;
  padding: 7px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}

.pill:hover { border-color: var(--moss); }

.pill[aria-pressed="true"],
.pill.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

/* ---------- 面包屑 ---------- */
.breadcrumb { margin-bottom: 18px; }

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.breadcrumb__item { display: inline-flex; align-items: center; gap: 8px; color: var(--moss); }

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--line);
}

.breadcrumb__link {
  color: var(--moss);
  text-decoration: none;
  border-bottom: 1px dashed var(--clover-line);
}

.breadcrumb__link:hover { color: var(--clover); border-bottom-color: var(--clover); }

.breadcrumb__current { color: var(--ink); font-weight: 600; }

/* ---------- 图片容器基础 ---------- */
.media-frame {
  position: relative;
  margin: 0;
  border: 2px solid var(--ink);
  border-radius: var(--radius-card);
  background: var(--paper);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.media-frame__inner {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 10;
  background-image:
    linear-gradient(135deg, rgba(47, 125, 79, 0.10), rgba(111, 182, 199, 0.14) 46%, rgba(185, 227, 111, 0.18));
  background-size: cover;
  color: rgba(15, 36, 27, 0.4);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.media-frame__inner img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame--wide .media-frame__inner { aspect-ratio: 16 / 9; }
.media-frame--square .media-frame__inner { aspect-ratio: 1 / 1; }

.media-frame__caption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--moss);
  line-height: 1.6;
}

/* ==========================================================================
   头部：悬浮胶囊浮岛
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  padding: 12px 16px 6px;
  background: linear-gradient(to bottom, rgba(241, 245, 238, 0.94), rgba(241, 245, 238, 0));
}

.header-progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 3px;
  z-index: 90;
  background: rgba(47, 125, 79, 0.10);
  pointer-events: none;
}

.header-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform-origin: 0 50%;
  transform: scaleX(var(--progress, 0));
  background: linear-gradient(90deg, var(--clover), var(--spring) 62%, var(--gold));
  transition: transform 0.12s linear;
}

.site-header__inner {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  max-width: var(--max-base);
  margin-inline: auto;
  padding: 9px 12px 9px 16px;
  background: rgba(251, 252, 247, 0.88);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-pill);
  box-shadow: 3px 3px 0 rgba(15, 36, 27, 0.10);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.site-header[data-scrolled="true"] .site-header__inner {
  background: rgba(251, 252, 247, 0.96);
  border-color: var(--clover-line);
  box-shadow: 4px 5px 0 rgba(15, 36, 27, 0.16);
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  color: var(--ink);
}

.brand:hover { color: var(--ink); }

.brand__mark {
  width: 28px;
  height: 28px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  transform: rotate(45deg);
  flex: none;
}

.brand__leaf { display: block; border-radius: 50% 0 50% 50%; }
.brand__leaf--a { background: var(--clover); }
.brand__leaf--b { background: var(--moss); }
.brand__leaf--c { background: var(--spring); }
.brand__leaf--d { background: var(--gold); }

.brand__text { display: grid; gap: 1px; }

.brand__line {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1.2;
  color: var(--ink);
}

.brand__tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  line-height: 1.3;
  color: var(--moss);
}

/* 导航胶囊 */
.site-nav {
  justify-self: center;
  min-width: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item { margin: 0; }

.nav-link {
  display: inline-block;
  padding: 8px 13px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.4;
  color: #20362B;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}

.nav-link:hover {
  background: var(--clover-soft);
  border-color: var(--line);
  color: var(--ink);
}

.nav-link[aria-current="page"] {
  background: var(--clover);
  border-color: var(--ink);
  color: var(--paper);
  box-shadow: inset 0 -2px 0 rgba(15, 36, 27, 0.25);
}

/* 头部 CTA */
.header-cta {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius-pill);
  background: var(--ink);
  color: var(--paper);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 3px 3px 0 var(--gold);
  transition: background-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.header-cta:hover,
.header-cta:focus-visible {
  background: var(--clover);
  color: var(--paper);
  transform: translateY(-1px);
  box-shadow: 4px 4px 0 var(--gold);
}

/* 移动菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius-pill);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 13.5px;
  font-weight: 700;
  cursor: pointer;
}

.nav-toggle__bars { display: grid; gap: 3px; width: 16px; }

.nav-toggle__bar {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform 0.18s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:first-child { transform: translateY(2.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:last-child { transform: translateY(-2.5px) rotate(-45deg); }

.nav-toggle__label { line-height: 1; }

/* ==========================================================================
   页脚：深墨绿下沉锚点
   ========================================================================== */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 8vw, 110px);
  border-top: 3px solid var(--gold);
  background-color: var(--ink);
  background-image:
    linear-gradient(to right, rgba(185, 227, 111, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(185, 227, 111, 0.055) 1px, transparent 1px);
  background-size: 80px 80px;
  color: #E4EDE2;
}

.footer-inner { padding-block: clamp(42px, 6vw, 72px) 26px; }

.footer-top {
  display: grid;
  grid-template-columns: 1.25fr 1.1fr 0.95fr;
  gap: clamp(26px, 4vw, 56px);
  align-items: start;
}

.footer-brand__line {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--paper);
  margin: 0 0 6px;
}

.footer-brand__tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--spring);
  margin: 0 0 18px;
}

.footer-version {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  max-width: 340px;
  padding: 12px 14px;
  border: 2px solid var(--gold);
  border-radius: 12px;
  background: rgba(217, 164, 65, 0.10);
  text-decoration: none;
  transition: background-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.footer-version:hover,
.footer-version:focus-visible {
  background: rgba(217, 164, 65, 0.20);
  transform: translateY(-2px);
  box-shadow: 0 6px 0 rgba(217, 164, 65, 0.20);
}

.footer-version__label {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--paper);
  line-height: 1.4;
}

.footer-version__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--gold);
  padding: 2px 8px;
  border: 1px solid rgba(217, 164, 65, 0.55);
  border-radius: 6px;
}

.season-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 18px;
}

.season-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid rgba(241, 245, 238, 0.18);
  border-radius: 6px;
  background: rgba(241, 245, 238, 0.07);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: #E4EDE2;
}

.season-chip__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  display: block;
}

.season-chip__dot--spring { background: var(--spring); }
.season-chip__dot--summer { background: var(--summer); }
.season-chip__dot--autumn { background: var(--autumn); }
.season-chip__dot--winter { background: #E8EFE5; }

.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.footer-col__title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.18em;
  line-height: 1.4;
  color: rgba(241, 245, 238, 0.55);
}

.footer-col__title::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--clover);
  flex: none;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.footer-links li { margin: 0; }

.footer-link {
  display: inline-block;
  font-size: 14.5px;
  line-height: 1.6;
  color: #D9E6D6;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.footer-link:hover,
.footer-link:focus-visible {
  color: var(--spring);
  border-bottom-color: var(--spring);
}

.footer-meta {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.footer-meta__item { display: grid; gap: 2px; margin: 0; }

.footer-meta__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: rgba(241, 245, 238, 0.48);
}

.footer-meta__val {
  font-size: 13.8px;
  line-height: 1.65;
  color: #E4EDE2;
  word-break: break-word;
}

.footer-bottom {
  margin-top: clamp(30px, 4vw, 52px);
  padding-top: 20px;
  border-top: 1px solid rgba(196, 211, 196, 0.22);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
}

.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-legal-links li { margin: 0; }

.footer-legal-link {
  font-size: 13px;
  color: #C7D8C4;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.footer-legal-link:hover,
.footer-legal-link:focus-visible {
  color: var(--spring);
  border-bottom-color: var(--spring);
}

.footer-copy,
.footer-icp {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(241, 245, 238, 0.55);
}

.footer-year { font-variant-numeric: tabular-nums; }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1120px) {
  .nav-link { padding: 7px 10px; font-size: 13.5px; }
  .brand__tag { display: none; }
  .header-cta { padding: 9px 14px; font-size: 13px; }
  .site-header__inner { gap: 10px; padding-left: 13px; }
}

@media (max-width: 1080px) {
  .footer-top { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .site-header { padding: 10px 10px 4px; }

  .site-header__inner {
    grid-template-columns: 1fr auto;
    gap: 10px;
    padding: 8px 8px 8px 14px;
    border-radius: 22px;
  }

  .nav-toggle { display: inline-flex; }
  .header-cta { display: none; }
  .brand__tag { display: inline-block; }

  .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    display: none;
    z-index: 70;
    padding: 10px;
    background: var(--paper);
    border: 1.5px solid var(--line);
    border-radius: 18px;
    box-shadow: 5px 5px 0 rgba(15, 36, 27, 0.14);
  }

  .site-nav[data-open] { display: block; }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .nav-link {
    display: block;
    padding: 12px 14px;
    border-radius: 12px;
    font-size: 15px;
  }

  .grid--two,
  .grid--7-5,
  .grid--8-4 { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 720px) {
  body { font-size: 16px; background-size: 64px 64px; }
  .container { padding-inline: 18px; }
  .footer-top { grid-template-columns: minmax(0, 1fr); }
  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .card { padding: 18px; }
  .footer-version { max-width: none; }
}

@media (max-width: 420px) {
  .brand__tag { display: none; }
  .footer-nav { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- 动效偏好 ---------- */
@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;
    scroll-behavior: auto !important;
  }

  .card:hover,
  .btn:hover,
  .footer-version:hover,
  .header-cta:hover { transform: none; }
}