/* ============================================================
   ALLWINCITY Site Kit — /assets/site.css
   深空蓝幕布 · 鎏金笔触 · 霓虹青脉冲 · 奶油纸长文
   ============================================================ */

/* ---------- reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

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%; height: auto; }

a { color: inherit; }

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

button { border: 0; background: none; cursor: pointer; }

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

/* ---------- 变量 ---------- */
:root {
  --space-void: #050D1C;
  --deep: #0A1730;
  --steel: #16304F;
  --gold: #C9A353;
  --gold-bright: #EBCB86;
  --cyan: #3FE3D2;
  --coral: #FF6A45;
  --paper: #F4EEE1;
  --ink: #1B1410;
  --mist: #A9B8CE;
  --moss: #5C8A73;

  --rail-w: 88px;
  --topbar-h: 64px;
  --pad-x: clamp(20px, 5vw, 72px);
  --gap: 24px;

  --font-display: "Sora", "HarmonyOS Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", "Consolas", "Courier New", monospace;

  --line-gold: rgba(201, 163, 83, 0.32);
  --line-gold-strong: rgba(201, 163, 83, 0.6);
  --glass: rgba(10, 23, 48, 0.72);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 基础排版 ---------- */
body {
  min-height: 100vh;
  padding-left: var(--rail-w);
  background-color: var(--deep);
  background-image:
    radial-gradient(1100px 560px at 88% -8%, rgba(201, 163, 83, 0.14), transparent 62%),
    radial-gradient(880px 520px at 2% 26%, rgba(63, 227, 210, 0.09), transparent 66%),
    radial-gradient(900px 700px at 60% 108%, rgba(22, 48, 79, 0.85), transparent 70%);
  background-attachment: fixed;
  color: var(--mist);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.8;
  letter-spacing: 0.01em;
  overflow-x: hidden;
}

body.nav-open { overflow: hidden; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
}

p { text-wrap: pretty; }

::selection {
  background: var(--gold);
  color: var(--space-void);
}

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

#main-content:focus { outline: none; }

/* ---------- skip link ---------- */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 400;
  display: inline-block;
  padding: 10px 18px;
  transform: translateY(-160%);
  background: var(--coral);
  color: var(--space-void);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-decoration: none;
  border-radius: 2px;
  transition: transform 0.2s var(--ease);
}

.skip-link:focus-visible,
.skip-link:focus {
  transform: translateY(0);
}

/* ---------- 顶部阅读进度 ---------- */
.read-progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 3px;
  z-index: 120;
  background: rgba(169, 184, 206, 0.12);
  pointer-events: none;
}

.read-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background-image: linear-gradient(90deg, var(--cyan), var(--gold) 70%, var(--gold-bright));
  box-shadow: 0 0 12px rgba(63, 227, 210, 0.5);
  transition: width 0.1s linear;
}

/* ============================================================
   头部
   ============================================================ */
.site-header {
  position: relative;
  z-index: 90;
}

/* ---------- 左侧框架导航 ---------- */
.frame-rail {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 90;
  width: var(--rail-w);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 22px 0 20px;
  overflow-y: auto;
  scrollbar-width: none;
  background-color: var(--space-void);
  background-image: linear-gradient(180deg, #050D1C 0%, #0A1730 38%, #050D1C 100%);
  border-right: 1px solid var(--line-gold);
}

.frame-rail::-webkit-scrollbar { display: none; }

.rail-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.32em;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-gold);
}

.rail-brand__mark {
  color: var(--gold-bright);
  font-weight: 800;
}

.rail-brand__cn {
  color: var(--mist);
  letter-spacing: 0.4em;
}

.rail-brand:hover .rail-brand__cn { color: var(--paper); }

.rail-meta {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--gold);
  opacity: 0.75;
}

/* ---------- 导航本体 ---------- */
.site-nav {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.site-nav__kicker,
.site-nav__foot { display: none; }

.site-nav__list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.site-nav__list a {
  display: block;
  padding: 12px 7px;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--mist);
  border-radius: 2px;
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.site-nav__list a:hover,
.site-nav__list a:focus-visible {
  color: var(--gold-bright);
  background-color: rgba(201, 163, 83, 0.1);
}

.site-nav__list a[aria-current="page"] {
  color: var(--gold-bright);
  background-color: rgba(63, 227, 210, 0.1);
  box-shadow: inset 2px 0 0 0 var(--cyan);
}

/* ---------- 全屏索引（data-open） ---------- */
.site-nav[data-open] {
  position: fixed;
  inset: 0;
  z-index: 95;
  flex: none;
  display: grid;
  grid-template-columns: 1fr;
  align-content: start;
  gap: clamp(16px, 3vw, 30px);
  padding: calc(var(--topbar-h) + clamp(28px, 7vh, 72px)) clamp(20px, 6vw, 88px) clamp(32px, 6vh, 64px);
  overflow-y: auto;
  background-color: var(--space-void);
  background-image:
    radial-gradient(700px 420px at 92% 4%, rgba(201, 163, 83, 0.16), transparent 64%),
    linear-gradient(155deg, rgba(5, 13, 28, 0.98), rgba(10, 23, 48, 0.97));
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border: 1px solid var(--line-gold-strong);
  animation: nav-fade 0.24s var(--ease) both;
}

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

.site-nav[data-open] .site-nav__kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.28em;
  color: var(--gold);
  text-transform: uppercase;
}

.site-nav[data-open] .site-nav__list {
  counter-reset: navitem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 0 clamp(16px, 3vw, 40px);
  align-items: start;
}

.site-nav[data-open] .site-nav__list li {
  counter-increment: navitem;
}

.site-nav[data-open] .site-nav__list a {
  writing-mode: horizontal-tb;
  text-orientation: initial;
  padding: 16px 8px 18px;
  font-size: clamp(20px, 2.6vw, 32px);
  font-weight: 800;
  letter-spacing: 0.02em;
  line-height: 1;
  color: var(--paper);
  border-top: 1px solid var(--line-gold);
  border-radius: 0;
  box-shadow: none;
  background-color: transparent;
}

.site-nav[data-open] .site-nav__list a::before {
  content: counter(navitem, decimal-leading-zero);
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.site-nav[data-open] .site-nav__list a:hover,
.site-nav[data-open] .site-nav__list a:focus-visible {
  color: var(--gold-bright);
  background-color: rgba(63, 227, 210, 0.06);
}

.site-nav[data-open] .site-nav__list a[aria-current="page"] {
  color: var(--gold-bright);
  box-shadow: inset 0 -2px 0 0 var(--cyan);
  background-color: rgba(63, 227, 210, 0.08);
}

.site-nav[data-open] .site-nav__foot {
  display: block;
  padding-top: 18px;
  border-top: 1px solid var(--line-gold);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

/* ---------- 顶部玻璃栏 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  min-height: var(--topbar-h);
  padding: 10px clamp(20px, 3.4vw, 40px);
  background-color: var(--glass);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line-gold);
}

.topbar__brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1.2;
}

.topbar__name {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--paper);
}

.topbar__tag {
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--mist);
}

.topbar__version {
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold-bright);
  border: 1px solid var(--line-gold-strong);
  border-radius: 2px;
  white-space: nowrap;
}

.topbar__quick {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.8vw, 26px);
  margin-left: auto;
}

.topbar__quick a {
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--mist);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.topbar__quick a:hover,
.topbar__quick a:focus-visible {
  color: var(--gold-bright);
  border-bottom-color: var(--cyan);
}

/* ---------- 唤出按钮 ---------- */
.nav-toggle {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background-color: var(--coral);
  color: var(--space-void);
  border-radius: 2px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
  white-space: nowrap;
  transition: background-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.topbar__quick + .nav-toggle { margin-left: 0; }

.nav-toggle:hover { background-color: #ff8a68; }
.nav-toggle:active { transform: translateY(1px); }

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
  width: 16px;
}

.nav-toggle__bars i {
  display: block;
  height: 2px;
  width: 100%;
  background-color: currentColor;
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
}

.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(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 120px);
  background-color: var(--space-void);
  background-image:
    radial-gradient(760px 420px at 88% 0%, rgba(201, 163, 83, 0.12), transparent 62%),
    linear-gradient(180deg, #050D1C, #0A1730 62%, #050D1C);
  border-top: 1px solid var(--line-gold-strong);
  color: var(--mist);
}

.footer-inner {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: clamp(40px, 6vw, 80px) var(--pad-x) clamp(24px, 3vw, 40px);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.5fr;
  gap: clamp(24px, 3vw, 48px);
  align-items: start;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-right: clamp(0px, 2vw, 24px);
}

.footer-brand__name {
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 800;
  letter-spacing: 0.1em;
  line-height: 1.2;
  color: var(--paper);
}

.footer-brand__tag {
  font-size: 13px;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.footer-brand__ver {
  align-self: flex-start;
  margin-top: 4px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold-bright);
  border: 1px solid var(--line-gold-strong);
  border-radius: 2px;
}

.footer-brand__hours {
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.footer-col__title {
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-gold);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.26em;
  color: var(--gold-bright);
}

.footer-col__list {
  display: flex;
  flex-direction: column;
  gap: 9px;
  font-size: 14px;
}

.footer-col__list a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.footer-col__list a:hover,
.footer-col__list a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--cyan);
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1.6;
}

.footer-contact__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--gold);
  text-transform: uppercase;
}

.footer-contact__value {
  font-size: 13.5px;
  color: var(--paper);
  word-break: break-word;
}

.footer-baseline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  margin-top: clamp(32px, 4vw, 56px);
  padding-top: 18px;
  border-top: 1px solid var(--line-gold);
}

.footer-baseline__note {
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.footer-baseline__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.footer-baseline__icp { color: var(--gold); }
.footer-baseline__copy { color: rgba(169, 184, 206, 0.86); }

/* ============================================================
   共享页面组件
   ============================================================ */
.shell {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: clamp(32px, 5vw, 72px) var(--pad-x);
}

.section-head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(24px, 3vw, 44px);
}

.section-index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--gold);
}

.section-kicker {
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--mist);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.4vw, 44px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.hairline {
  display: block;
  width: 100%;
  height: 1px;
  border: 0;
  background-image: linear-gradient(90deg, var(--gold), rgba(201, 163, 83, 0));
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-decoration: none;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease),
              border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background-color: var(--coral);
  color: var(--space-void);
  border-color: var(--coral);
}

.btn--primary:hover { background-color: #ff8a68; border-color: #ff8a68; }

.btn--ghost {
  background-color: transparent;
  color: var(--gold-bright);
  border-color: var(--line-gold-strong);
}

.btn--ghost:hover {
  color: var(--paper);
  border-color: var(--cyan);
  background-color: rgba(63, 227, 210, 0.08);
}

.btn--sm {
  padding: 8px 16px;
  font-size: 12px;
  letter-spacing: 0.14em;
}

/* ---------- 面包屑 ---------- */
.breadcrumbs { margin-bottom: clamp(20px, 3vw, 32px); }

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.breadcrumbs li { display: inline-flex; align-items: center; gap: 8px; }

.breadcrumbs li + li::before {
  content: "/";
  color: var(--gold);
}

.breadcrumbs a {
  color: var(--mist);
  text-decoration: none;
}

.breadcrumbs a:hover,
.breadcrumbs a:focus-visible { color: var(--gold-bright); }

/* ---------- 奶油纸长文 ---------- */
.prose {
  padding: clamp(24px, 4vw, 56px);
  background-color: var(--paper);
  background-image: repeating-linear-gradient(
    0deg,
    rgba(27, 20, 16, 0.028) 0 1px,
    transparent 1px 5px
  );
  color: var(--ink);
  border: 1px solid rgba(27, 20, 16, 0.14);
  font-size: 17px;
  line-height: 1.9;
}

.prose > * + * { margin-top: 1.1em; }

.prose h2,
.prose h3 {
  color: var(--ink);
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.prose h2 { font-size: clamp(20px, 2.2vw, 26px); margin-top: 1.6em; }
.prose h3 { font-size: 18px; margin-top: 1.4em; }

.prose p,
.prose li { max-width: 68ch; }

.prose ul,
.prose ol {
  padding-left: 1.2em;
  list-style: disc;
}

.prose ol { list-style: decimal; }
.prose li + li { margin-top: 0.4em; }

.prose a {
  color: #8a5a12;
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.prose blockquote {
  padding-left: 18px;
  border-left: 3px solid var(--gold);
  color: #4a3a2a;
}

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

.bento__cell {
  grid-column: span 4;
  min-width: 0;
}

.bento__cell--wide { grid-column: span 6; }
.bento__cell--full { grid-column: span 12; }

/* ---------- 卡片 ---------- */
.panel {
  padding: clamp(18px, 2.4vw, 32px);
  background-color: var(--steel);
  border: 1px solid rgba(201, 163, 83, 0.22);
  color: var(--mist);
}

.glass-panel {
  padding: clamp(18px, 2.4vw, 32px);
  background-color: rgba(10, 23, 48, 0.55);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border: 1px solid var(--line-gold-strong);
  color: var(--mist);
}

/* ---------- 媒体框 ---------- */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background-color: var(--steel);
  background-image: linear-gradient(135deg, #16304F, #0A1730 70%);
  border: 1px solid var(--line-gold);
}

.media-frame img,
.media-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.05);
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }

.media-frame__caption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 12px 16px;
  background-image: linear-gradient(0deg, rgba(5, 13, 28, 0.92), rgba(5, 13, 28, 0));
  color: var(--paper);
  font-size: 12.5px;
  letter-spacing: 0.1em;
}

/* ---------- 小件 ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border: 1px solid var(--line-gold-strong);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold-bright);
  white-space: nowrap;
}

.tag {
  display: inline-block;
  padding: 2px 10px;
  background-color: var(--moss);
  color: var(--paper);
  border-radius: 2px;
  font-size: 12px;
  letter-spacing: 0.12em;
}

.data-mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  color: var(--gold-bright);
}

/* ---------- 显影 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  .footer-grid { grid-template-columns: 1.2fr 1fr 1fr; }
  .footer-col--contact { grid-column: span 3; }
}

@media (max-width: 900px) {
  body { padding-left: 0; }

  .frame-rail { display: contents; }
  .rail-brand,
  .rail-meta { display: none; }

  .site-nav { display: none; }

  .site-nav[data-open] {
    display: grid;
    padding-top: calc(var(--topbar-h) + 40px);
  }

  .topbar {
    min-height: 58px;
    padding: 8px 16px;
    gap: 12px;
  }

  .topbar__tag { display: none; }
  .topbar__quick { display: none; }
  .topbar__name { font-size: 13px; letter-spacing: 0.1em; }

  .nav-toggle { margin-left: auto; padding: 9px 14px; }

  .bento { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
  .bento__cell,
  .bento__cell--wide { grid-column: span 4; }
  .bento__cell--full { grid-column: span 4; }

  .footer-grid { grid-template-columns: 1fr 1fr; }

  .footer-col--contact { grid-column: span 2; }

  .footer-baseline { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }

  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-col--contact { grid-column: span 1; }

  .site-nav[data-open] { padding-inline: 20px; }
  .site-nav[data-open] .site-nav__list { grid-template-columns: 1fr; }

  .topbar__version { display: none; }

  .media-frame { aspect-ratio: 4 / 3; }
  .media-frame--wide { aspect-ratio: 16 / 10; }
}

/* ============================================================
   减弱动效
   ============================================================ */
@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;
    scroll-behavior: auto !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .btn:hover { transform: none; }
}