/* ============================================================
   PG游艺 · 共享样式表 /assets/site.css
   报头刊头 + 四段色带页脚 + 档案卡组件系统
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

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

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

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

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

a { color: inherit; text-decoration: none; }

button { background: none; border: 0; }

[hidden] { display: none !important; }

/* ---------- 2. 变量 ---------- */
:root {
  /* 色彩 */
  --bamboo: #2F6B5E;
  --bamboo-deep: #173F38;
  --rice: #F6F1E6;
  --paper: #FFFDF7;
  --vermilion: #C8572E;
  --vermilion-deep: #9E3F22;
  --ink: #1B1A17;
  --gray: #7F938B;
  --gray-deep: #5F716A;
  --indigo: #244A5A;
  --wine: #7A2E3A;
  --glass: rgba(221, 232, 226, .62);
  --line: rgba(127, 147, 139, .42);
  --line-strong: rgba(127, 147, 139, .72);

  /* 字体 */
  --font-display: "MiSans VF", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;

  /* 尺寸 */
  --shell: 1280px;
  --gutter: clamp(18px, 4vw, 48px);
  --radius-s: 8px;
  --radius-m: 14px;
  --radius-l: 22px;

  --shadow-soft: 0 18px 42px -30px rgba(23, 63, 56, .8);
  --shadow-lift: 0 22px 50px -34px rgba(23, 63, 56, .95);
}

/* ---------- 3. 基础中文排版 ---------- */
body {
  min-height: 100vh;
  background-color: var(--rice);
  background-image:
    repeating-linear-gradient(90deg, rgba(127, 147, 139, .05) 0 1px, transparent 1px 96px);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: clamp(15.5px, 1.05vw + 12px, 17px);
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: .02em;
  color: var(--bamboo-deep);
}

h1 { font-size: clamp(1.9rem, 3.4vw, 2.9rem); }
h2 { font-size: clamp(1.35rem, 2vw, 1.85rem); }
h3 { font-size: clamp(1.05rem, 1.3vw, 1.2rem); }

p { max-width: 68ch; }

strong { font-weight: 700; color: var(--ink); }

::selection { background: rgba(200, 87, 46, .22); color: var(--ink); }

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

.section { padding-block: clamp(48px, 7vw, 96px); }
.section--tight { padding-block: clamp(28px, 4vw, 56px); }

.grid { display: grid; gap: clamp(18px, 2.4vw, 32px); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid--aside { grid-template-columns: minmax(0, 280px) minmax(0, 1fr); align-items: start; }

.prose { max-width: 68ch; }
.prose p { margin-bottom: 1.1em; }
.prose p:last-child { margin-bottom: 0; }
.prose h2 { margin: 1.8em 0 .6em; }

[id] { scroll-margin-top: clamp(96px, 14vh, 150px); }

/* ---------- 5. 跳至主内容 ---------- */
.skip-link {
  position: absolute;
  top: -80px;
  left: clamp(12px, 3vw, 26px);
  z-index: 300;
  padding: 11px 20px;
  border-radius: 0 0 var(--radius-s) var(--radius-s);
  background: var(--vermilion);
  color: #FFF7F1;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .06em;
  transition: top .18s ease;
}
.skip-link:focus { top: 0; }

/* ---------- 6. 报头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: var(--rice);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 16px 34px -30px rgba(23, 63, 56, .95);
}

.site-header::before {
  content: "";
  display: block;
  height: 5px;
  background:
    repeating-linear-gradient(90deg, rgba(246, 241, 230, .5) 0 1px, transparent 1px 24px),
    linear-gradient(90deg, var(--bamboo-deep) 0 30%, var(--bamboo) 30% 62%, var(--indigo) 62% 84%, var(--wine) 84% 100%);
}

/* 阅读进度线 */
.scroll-meter {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 200;
  background: rgba(23, 63, 56, .12);
  pointer-events: none;
}
.scroll-meter__bar {
  display: block;
  width: 0;
  height: 100%;
  background: var(--vermilion);
  box-shadow: 0 0 10px rgba(200, 87, 46, .6);
}

/* 刊头三栏 */
.masthead {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  grid-template-areas: "crumb brand tools";
  align-items: center;
  gap: 18px;
  max-width: var(--shell);
  margin-inline: auto;
  padding: 16px var(--gutter) 14px;
}

/* 面包屑短签 */
.crumb {
  grid-area: crumb;
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .03em;
  color: var(--gray-deep);
}
.crumb__link {
  padding-bottom: 1px;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}
.crumb__link:hover { color: var(--vermilion-deep); border-bottom-color: var(--vermilion-deep); }
.crumb__sep { color: var(--gray); }
.crumb__now {
  max-width: 22ch;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--ink);
}

/* 品牌题字 */
.masthead__brand {
  grid-area: brand;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  text-align: center;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: clamp(26px, 3.2vw, 38px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: .1em;
  color: var(--bamboo-deep);
  transition: color .18s ease;
}
.brand:hover { color: var(--bamboo); }
.brand__mark {
  width: 14px;
  height: 14px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--vermilion);
  box-shadow:
    0 0 0 4px rgba(200, 87, 46, .18),
    0 0 0 9px rgba(47, 107, 94, .13);
}
.brand__name { display: inline-block; }
.brand__tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .26em;
  color: var(--gray-deep);
}

/* 工具区 */
.masthead__tools {
  grid-area: tools;
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 8px;
}
.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--bamboo-deep);
  font-size: 13px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: .07em;
  cursor: pointer;
  transition: background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}
.tool-btn:hover {
  border-color: var(--bamboo);
  color: var(--bamboo);
  transform: translateY(-1px);
}
.tool-btn__label { display: inline-block; }
.tool-btn--plain {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--gray-deep);
}
.tool-btn--plain:hover { color: var(--bamboo); border-color: var(--bamboo); background: rgba(255, 253, 247, .7); }
.tool-btn--accent {
  background: var(--vermilion);
  border-color: var(--vermilion);
  color: #FFF7F1;
  font-weight: 700;
}
.tool-btn--accent:hover {
  background: var(--vermilion-deep);
  border-color: var(--vermilion-deep);
  color: #FFFFFF;
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--paper);
  color: var(--bamboo-deep);
  font-size: 12.5px;
  letter-spacing: .08em;
  cursor: pointer;
}
.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
  width: 15px;
}
.nav-toggle__bars i {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }
.nav-toggle__text { display: inline-block; }

/* 站内搜索浮条 */
.search-panel {
  border-top: 1px solid rgba(246, 241, 230, .16);
  background: var(--bamboo-deep);
  color: var(--rice);
}
.search-panel__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  max-width: var(--shell);
  margin-inline: auto;
  padding: 14px var(--gutter) 16px;
}
.search-panel__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .28em;
  color: #A9C4BA;
}
.search-panel__input {
  flex: 1 1 260px;
  min-width: 0;
  padding: 10px 18px;
  border: 1px solid rgba(246, 241, 230, .3);
  border-radius: 999px;
  background: rgba(246, 241, 230, .08);
  color: #FFFDF7;
  font-size: 14px;
  letter-spacing: .02em;
  transition: border-color .18s ease, background .18s ease;
}
.search-panel__input::placeholder { color: rgba(246, 241, 230, .55); }
.search-panel__input:focus {
  outline: none;
  border-color: var(--vermilion);
  background: rgba(246, 241, 230, .15);
}
.search-panel__status {
  flex: 0 1 auto;
  font-size: 12.5px;
  letter-spacing: .02em;
  color: #A9C4BA;
}

/* 主导航 */
.site-nav {
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 253, 247, .96), rgba(246, 241, 230, .98));
}
.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(4px, 1.6vw, 26px);
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.site-nav__item { display: block; }
.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 13px 4px 12px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: .09em;
  color: var(--bamboo-deep);
  transition: color .18s ease;
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 4px;
  right: 4px;
  bottom: 6px;
  height: 2px;
  background: var(--vermilion);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .22s ease;
}
.site-nav__link:hover { color: var(--vermilion-deep); }
.site-nav__link:hover::after { transform: scaleX(1); }
.site-nav__link[aria-current="page"] {
  color: var(--vermilion-deep);
  font-weight: 700;
}
.site-nav__link[aria-current="page"]::after {
  height: 3px;
  transform: scaleX(1);
}
.site-nav__foot {
  display: none;
  max-width: none;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: #A9C4BA;
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 110px);
  background: var(--bamboo-deep);
  color: var(--rice);
}
.footer-band {
  height: 8px;
  background:
    repeating-linear-gradient(90deg, rgba(23, 63, 56, .38) 0 1px, transparent 1px 34px),
    linear-gradient(90deg, var(--bamboo) 0 25%, var(--indigo) 25% 50%, var(--wine) 50% 75%, var(--vermilion) 75% 100%);
}

.footer-shell { padding-block: clamp(40px, 6vw, 70px) 22px; }

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr .85fr .85fr 1.5fr;
  gap: clamp(24px, 3vw, 48px);
  align-items: start;
}

.footer-brand__name {
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(22px, 2vw, 26px);
  font-weight: 800;
  letter-spacing: .12em;
  color: #FFFDF7;
  border-bottom: 2px solid transparent;
  transition: border-color .18s ease;
}
.footer-brand__name:hover { border-bottom-color: var(--vermilion); }
.footer-brand__tag {
  margin-top: 12px;
  max-width: 24ch;
  font-size: 14px;
  line-height: 1.75;
  color: #C9DCD4;
}
.footer-brand__region {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: #8FA9A0;
}

.footer-col__title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: .3em;
  color: #8FA9A0;
}
.footer-col__list li { margin-bottom: 9px; }
.footer-col__list a {
  display: inline-block;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  font-size: 14.5px;
  color: #E4EEE9;
  transition: color .18s ease, border-color .18s ease;
}
.footer-col__list a:hover { color: #FFFFFF; border-bottom-color: var(--vermilion); }

.footer-col--contact { min-width: 0; }
.footer-contact { margin-bottom: 4px; }
.footer-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 10px;
  margin-bottom: 12px;
}
.footer-contact__label {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .22em;
  color: #8FA9A0;
}
.footer-contact__value {
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: .02em;
  color: #FFFDF7;
  word-break: break-word;
}
.footer-contact__value--addr {
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.7;
  color: #D6E5DE;
  max-width: 26ch;
}
.copy-btn {
  padding: 3px 10px;
  border: 1px solid rgba(246, 241, 230, .28);
  border-radius: 999px;
  background: transparent;
  color: #C9DCD4;
  font-size: 11.5px;
  letter-spacing: .06em;
  cursor: pointer;
  transition: background .18s ease, color .18s ease, border-color .18s ease;
}
.copy-btn:hover { background: rgba(246, 241, 230, .12); color: #FFFFFF; border-color: rgba(246, 241, 230, .5); }
.copy-btn[data-copy-state="done"] { background: var(--vermilion); border-color: var(--vermilion); color: #FFF7F1; }
.copy-btn[data-copy-state="fail"] { border-color: var(--vermilion); color: #F1B79E; }

.footer-note {
  margin-top: 10px;
  max-width: 32ch;
  font-size: 12.5px;
  line-height: 1.7;
  color: #9FB8AF;
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 20px;
  margin-top: clamp(26px, 4vw, 46px);
  padding-top: 18px;
  border-top: 1px solid rgba(246, 241, 230, .16);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .03em;
  color: #9FB8AF;
}
.footer-base__copy { max-width: none; }
.footer-base__meta { max-width: none; }
.footer-base__icp { color: #C9DCD4; }
.footer-base__sep { margin-inline: 8px; color: #5F716A; }

/* 返回顶部 */
.back-top {
  position: fixed;
  right: clamp(14px, 3vw, 28px);
  bottom: clamp(14px, 3vw, 28px);
  z-index: 120;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid rgba(246, 241, 230, .3);
  border-radius: 999px;
  background: var(--bamboo-deep);
  color: var(--rice);
  font-size: 12.5px;
  letter-spacing: .1em;
  cursor: pointer;
  opacity: 0;
  transform: translateY(14px);
  pointer-events: none;
  box-shadow: var(--shadow-lift);
  transition: opacity .24s ease, transform .24s ease, background .18s ease, border-color .18s ease;
}
.back-top::before {
  content: "";
  width: 8px;
  height: 8px;
  border-left: 2px solid currentColor;
  border-top: 2px solid currentColor;
  transform: rotate(45deg);
  margin-top: 3px;
}
.back-top[data-visible] {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}
.back-top:hover { background: var(--vermilion); border-color: var(--vermilion); color: #FFF7F1; }

/* ---------- 8. 通用组件 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .06em;
  cursor: pointer;
  transition: background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn--solid { background: var(--bamboo); color: #FFFDF7; }
.btn--solid:hover { background: var(--bamboo-deep); }
.btn--accent { background: var(--vermilion); color: #FFF7F1; }
.btn--accent:hover { background: var(--vermilion-deep); color: #FFFFFF; }
.btn--ghost {
  background: var(--paper);
  border-color: var(--line-strong);
  color: var(--bamboo-deep);
}
.btn--ghost:hover { border-color: var(--bamboo); color: var(--bamboo); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--gray-deep);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  line-height: 1.6;
}
.tag--indigo { background: var(--indigo); border-color: var(--indigo); color: #EAF2F5; }
.tag--accent {
  background: rgba(200, 87, 46, .12);
  border-color: rgba(200, 87, 46, .4);
  color: var(--vermilion-deep);
}
.tag--glass {
  background: var(--glass);
  border-color: rgba(255, 253, 247, .65);
  color: var(--bamboo-deep);
  backdrop-filter: blur(8px);
}

.panel {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--paper);
  box-shadow: var(--shadow-soft);
}
.panel--glass {
  background: var(--glass);
  border-color: rgba(255, 253, 247, .7);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-lift);
}
.panel--band { border-left: 4px solid var(--vermilion); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .3em;
  color: var(--vermilion-deep);
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--vermilion);
}

.tick-rule {
  height: 13px;
  border-bottom: 1px solid var(--line);
  background: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 13px);
}

/* ---------- 9. 图片容器基础规则 ---------- */
.media {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background-color: var(--paper);
  background-image: repeating-conic-gradient(
    from 0deg,
    rgba(127, 147, 139, .13) 0% 25%,
    transparent 0% 50%
  );
  background-size: 24px 24px;
}
.media img,
.media picture,
.media picture img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media--wide { aspect-ratio: 16 / 9; }
.media--card { aspect-ratio: 4 / 3; }
.media--square { aspect-ratio: 1 / 1; }
.media--tall { aspect-ratio: 3 / 4; }

.media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 16px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--rice);
  background: linear-gradient(180deg, rgba(23, 63, 56, 0), rgba(23, 63, 56, .85));
}
.media__badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
}

/* ---------- 10. 工具类 ---------- */
.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;
}

/* ---------- 11. 焦点可见 ---------- */
:where(a, button, input, select, textarea, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--vermilion);
  outline-offset: 3px;
  border-radius: 3px;
}
.site-footer :where(a, button, input):focus-visible {
  outline-color: #F3B79D;
}
.search-panel :where(input, button):focus-visible {
  outline-color: #F3B79D;
}

/* ---------- 12. 响应式 ---------- */
@media (max-width: 1080px) {
  .footer-top { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-col--contact { grid-column: 1 / -1; }
  .footer-contact__value--addr { max-width: 40ch; }
  .footer-note { max-width: 48ch; }
}

@media (max-width: 900px) {
  .grid--aside { grid-template-columns: minmax(0, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 28px 32px; }
  .footer-col--contact { grid-column: 1 / -1; }
}

@media (max-width: 860px) {
  .site-header { box-shadow: 0 12px 26px -26px rgba(23, 63, 56, .95); }

  .masthead {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "brand tools"
      "crumb crumb";
    row-gap: 6px;
    gap: 6px 14px;
    padding: 10px var(--gutter) 11px;
  }
  .masthead__brand {
    justify-self: start;
    align-items: flex-start;
    text-align: left;
  }
  .brand { font-size: 23px; gap: 8px; letter-spacing: .08em; }
  .brand__mark { width: 11px; height: 11px; box-shadow: 0 0 0 3px rgba(200, 87, 46, .18), 0 0 0 7px rgba(47, 107, 94, .13); }
  .brand__tag { font-size: 10.5px; letter-spacing: .18em; }

  .masthead__tools { gap: 6px; }
  .tool-btn { padding: 8px 11px; font-size: 12px; letter-spacing: .04em; }
  .nav-toggle { display: inline-flex; padding: 8px 11px; }

  .crumb { font-size: 11.5px; gap: 6px; }

  .search-panel__inner { padding: 12px var(--gutter) 14px; }

  .site-nav { display: none; background: var(--bamboo-deep); border-top-color: rgba(246, 241, 230, .18); }
  .site-nav[data-open] { display: block; animation: navDrop .2s ease both; }
  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-block: 4px;
  }
  .site-nav__link {
    display: block;
    width: 100%;
    padding: 13px 2px;
    border-bottom: 1px solid rgba(246, 241, 230, .16);
    font-size: 16px;
    color: #EAF2EE;
  }
  .site-nav__item:last-child .site-nav__link { border-bottom: 0; }
  .site-nav__link::after { display: none; }
  .site-nav__link:hover { color: #FFFFFF; }
  .site-nav__link[aria-current="page"] {
    color: #FFE2D4;
    padding-left: 14px;
    box-shadow: inset 3px 0 0 var(--vermilion);
  }
  .site-nav__foot {
    display: block;
    padding: 12px var(--gutter) 16px;
    border-top: 1px solid rgba(246, 241, 230, .16);
  }
}

@keyframes navDrop {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: none; }
}

@media (max-width: 620px) {
  .footer-top { grid-template-columns: 1fr; gap: 26px; }
  .footer-col--contact { grid-column: auto; }
  .footer-brand__tag { max-width: none; }
  .footer-contact__value--addr { max-width: none; }
  .footer-note { max-width: none; }
  .footer-base { font-size: 11.5px; }
  .back-top { padding: 9px 15px; font-size: 12px; }
  .search-panel__inner { gap: 10px 12px; }
  .search-panel__status { flex: 1 1 100%; }
}

@media (max-width: 400px) {
  .masthead__tools { gap: 5px; }
  .tool-btn { padding: 7px 9px; font-size: 11.5px; }
  .nav-toggle { padding: 7px 9px; }
  .nav-toggle__text { display: none; }
}

/* ---------- 13. 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}