/* ==========================================================================
   易发棋牌 · 赛事通体育 / 共享样式表  assets/site.css
   结构：变量 → 基础版式 → 布局基元 → 组件 → 页头 → 页脚 → 响应式 → 动效
   ========================================================================== */

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

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

body { margin: 0; }

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

h1, h2, h3, h4, p, dl, dd, dt, figure, blockquote { margin: 0; }

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

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

a { color: inherit; }

[hidden] { display: none; }

/* ---------- 2. 变量与基础版式 ---------- */
:root {
  --paper: #F5F0E6;
  --paper-2: #E7DFCF;
  --ink: #0F3A31;
  --ink-deep: #08211D;
  --orange: #FF7A1E;
  --orange-soft: #FFD9B8;
  --black: #14171A;
  --gray: #7F8A8F;
  --blue: #29D3E8;
  --green: #1F6B4F;
  --mist: #FBFDFB;

  --line: rgba(20, 23, 26, 0.16);
  --line-soft: rgba(20, 23, 26, 0.08);
  --line-invert: rgba(251, 253, 251, 0.18);

  --shell: 1320px;
  --gut: clamp(20px, 4vw, 64px);
  --cut: 16px;
  --cut-sm: 10px;
  --drop: 10px;
  --step: 180ms;
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);

  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

body {
  min-height: 100vh;
  background-color: var(--paper);
  color: var(--black);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--black);
}

h1 { font-size: clamp(30px, 4.4vw, 44px); font-weight: 900; }
h2 { font-size: clamp(23px, 2.8vw, 32px); font-weight: 900; }
h3 { font-size: 18px; }
h4 { font-size: 16px; }

p { text-wrap: pretty; }

a { text-decoration-thickness: 1px; text-underline-offset: 3px; }

[id] { scroll-margin-top: 96px; }

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

.skip-link {
  position: absolute;
  top: 0;
  left: var(--gut);
  z-index: 200;
  transform: translateY(-160%);
  background-color: var(--ink);
  color: var(--mist);
  padding: 12px 18px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  transition: transform var(--step) var(--ease);
}

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

/* ---------- 3. 布局基元 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gut);
}

.section { padding-block: clamp(44px, 6.5vw, 92px); }
.section--tight { padding-block: clamp(26px, 4vw, 48px); }
.section--ink { background-color: var(--ink); color: var(--mist); }
.section--ink h1,
.section--ink h2,
.section--ink h3,
.section--ink h4 { color: var(--mist); }
.section--paper2 { background-color: var(--paper-2); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: clamp(20px, 3vw, 36px);
}

.section-head__link {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 1px solid var(--line);
}

.section-head__link:hover { color: var(--orange); border-bottom-color: var(--orange); }

.stack > * + * { margin-top: 1em; }
.stack--lg > * + * { margin-top: 1.8em; }

.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.prose { max-width: 34em; }
.prose > * + * { margin-top: 1em; }
.prose h2 { margin-top: 1.7em; }
.prose h3 { margin-top: 1.4em; }
.prose ul,
.prose ol { padding-left: 1.2em; list-style: disc; }
.prose ol { list-style: decimal; }
.prose li { margin-top: 0.4em; }
.prose code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  background-color: var(--paper-2);
  padding: 0.1em 0.35em;
}

/* ---------- 4. 通用工具类 ---------- */
.u-mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}
.u-quiet { color: var(--gray); }
.u-ink { color: var(--ink); }
.u-orange { color: var(--orange); }
.u-blue { color: var(--blue); }
.u-rule { border: 0; height: 1px; background-color: var(--line); margin: 0; }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 22px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  color: var(--black);
  background-color: var(--paper-2);
  border: 1px solid transparent;
  cursor: pointer;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut-sm)), calc(100% - var(--cut-sm)) 100%, 0 100%);
  transition: transform var(--step) var(--ease), background-color var(--step) var(--ease), color var(--step) var(--ease), border-color var(--step) var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn--primary { background-color: var(--orange); color: var(--black); }
.btn--primary:hover { background-color: #FF9046; }
.btn--ink { background-color: var(--ink); color: var(--mist); }
.btn--ink:hover { background-color: var(--green); }
.btn--ghost { background-color: transparent; border-color: var(--line); color: var(--ink); }
.btn--ghost:hover { background-color: var(--paper-2); border-color: var(--ink); }
.btn--small { padding: 9px 16px; font-size: 13px; }

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

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(12px, 2vw, 28px);
  min-height: 76px;
}

.site-header__left {
  display: flex;
  align-items: center;
  gap: clamp(14px, 1.8vw, 28px);
  min-width: 0;
}

.site-header__right {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.4vw, 18px);
  margin-left: auto;
  min-width: 0;
}

.site-header__progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  overflow: hidden;
  background-color: transparent;
}

.site-header__progress > span {
  display: block;
  width: 0;
  height: 100%;
  background-image: linear-gradient(90deg, var(--blue), var(--orange));
  transition: width 120ms linear;
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex: none;
}

.brand__mark {
  position: relative;
  width: 32px;
  height: 32px;
  flex: none;
  background-color: var(--ink);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 11px), calc(100% - 11px) 100%, 0 100%);
}
.brand__mark::before {
  content: "";
  position: absolute;
  left: 7px;
  right: 7px;
  top: 50%;
  height: 3px;
  background-color: var(--orange);
  transform: translateY(-50%) skewX(-12deg);
}
.brand__mark::after {
  content: "";
  position: absolute;
  right: 6px;
  bottom: 6px;
  width: 5px;
  height: 5px;
  background-color: var(--blue);
}

.brand__text { display: flex; flex-direction: column; line-height: 1.2; }
.brand__name { font-size: 19px; font-weight: 900; letter-spacing: -0.01em; color: var(--black); }
.brand__lockup {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--gray);
  white-space: nowrap;
}

/* 版本索引 */
.site-index {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gray);
}
.site-index__key { color: var(--gray); }
.site-index__val { color: var(--ink); }

/* 赛区切换器 */
.zone-switch { position: relative; }

.zone-switch__toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: transparent;
  border: 1px solid var(--line);
  padding: 8px 12px;
  font-size: 13px;
  color: var(--black);
  cursor: pointer;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  transition: background-color var(--step) var(--ease), border-color var(--step) var(--ease);
}
.zone-switch__toggle:hover { background-color: var(--paper-2); border-color: var(--ink); }

.zone-switch__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gray);
}
.zone-switch__value { font-family: var(--font-mono); font-size: 13px; color: var(--ink); }

.zone-switch__caret {
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid var(--ink);
  transition: transform var(--step) var(--ease);
}
.zone-switch__toggle[aria-expanded="true"] .zone-switch__caret { transform: rotate(180deg); }

.zone-switch__panel {
  display: none;
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  z-index: 100;
  width: min(280px, calc(100vw - 40px));
  background-color: var(--mist);
  border: 1px solid var(--line);
  padding: 12px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  box-shadow: 0 18px 40px rgba(8, 33, 29, 0.16);
}
.zone-switch__panel:not([hidden]) { display: block; }

.zone-switch__title {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gray);
  margin-bottom: 8px;
  font-family: var(--font-mono);
}

.zone-switch__list { display: grid; gap: 2px; }

.zone-switch__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  background-color: transparent;
  border: 0;
  padding: 9px 10px;
  font-size: 14px;
  text-align: left;
  color: var(--black);
  cursor: pointer;
  transition: background-color var(--step) var(--ease), color var(--step) var(--ease);
}
.zone-switch__item:hover { background-color: var(--orange-soft); }
.zone-switch__item[aria-selected="true"] { background-color: var(--ink); color: var(--mist); }
.zone-switch__code { font-size: 11px; color: var(--gray); }
.zone-switch__item[aria-selected="true"] .zone-switch__code { color: var(--blue); }

/* 栏目导航 */
.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 11px;
  font-size: 13.5px;
  color: var(--black);
  text-decoration: none;
  white-space: nowrap;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  transition: background-color var(--step) var(--ease), color var(--step) var(--ease);
}
.site-nav__link:hover { background-color: var(--paper-2); }
.site-nav__link[aria-current="page"] { background-color: var(--ink); color: var(--mist); }
.site-nav__idx { font-size: 11px; color: var(--gray); }
.site-nav__link[aria-current="page"] .site-nav__idx { color: var(--blue); }

/* 关注列表计数 */
.watch {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 10px;
  border: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--gray);
  white-space: nowrap;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%);
}
.watch__count { font-size: 13px; font-weight: 600; color: var(--ink); }

/* 移动端栏目按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  background-color: var(--ink);
  color: var(--mist);
  border: 0;
  padding: 9px 12px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  transition: background-color var(--step) var(--ease);
}
.nav-toggle:hover { background-color: var(--green); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 14px;
  height: 2px;
  background-color: currentColor;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 14px;
  height: 2px;
  background-color: currentColor;
  transition: transform var(--step) var(--ease);
}
.nav-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after { top: 5px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background-color: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-5px) rotate(-45deg); }

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  background-color: var(--ink-deep);
  color: var(--mist);
}

.site-footer__band {
  height: 12px;
  background-color: var(--ink);
  background-image: repeating-linear-gradient(102deg, rgba(255, 122, 30, 0.9) 0 6px, transparent 6px 20px);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 4vw, 56px);
  padding-block: clamp(38px, 5.5vw, 72px);
}

.site-footer__lead {
  display: grid;
  gap: 14px;
  align-content: start;
  max-width: 430px;
}

.site-footer__brand { font-size: 22px; font-weight: 900; letter-spacing: -0.01em; color: var(--mist); }
.site-footer__lockup { font-size: 12px; letter-spacing: 0.1em; color: var(--blue); }
.site-footer__note { font-size: 14px; line-height: 1.8; color: rgba(251, 253, 251, 0.72); max-width: 30em; }
.site-footer__lead .btn { justify-self: start; }
.site-footer .btn--ghost { border-color: var(--line-invert); color: var(--mist); }

.site-footer__contact {
  display: grid;
  gap: 8px;
  margin-top: 6px;
  padding-top: 16px;
  border-top: 1px solid var(--line-invert);
}
.site-footer__contact-row { display: flex; flex-wrap: wrap; gap: 10px; font-size: 13px; }
.site-footer__contact-row dt {
  flex: 0 0 72px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(251, 253, 251, 0.55);
}
.site-footer__contact-row dd { margin: 0; color: var(--mist); word-break: break-all; }

.site-footer__nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(18px, 3vw, 32px);
}

.site-footer__col-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line-invert);
}

.site-footer__list { display: grid; gap: 10px; }

.site-footer__link {
  font-size: 14px;
  color: rgba(251, 253, 251, 0.82);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--step) var(--ease), border-color var(--step) var(--ease);
}
.site-footer__link:hover { color: var(--orange); border-bottom-color: var(--orange); }
.site-footer__link[aria-current="page"] { color: var(--orange); }

.site-footer__meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  padding-block: 18px 26px;
  border-top: 1px solid var(--line-invert);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: rgba(251, 253, 251, 0.6);
}
.site-footer__line { margin: 0; }

/* ---------- 8. Bento 网格与切角面板 ---------- */
.bento {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}

.bento__unit { grid-column: span 12; min-width: 0; }
.bento__unit--drop { margin-top: var(--drop); }

.panel {
  position: relative;
  background-color: var(--mist);
  border: 1px solid var(--line);
  padding: clamp(20px, 2.4vw, 32px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}

.panel--paper { background-color: var(--paper-2); }

.panel--ink {
  background-color: var(--ink);
  background-image:
    linear-gradient(90deg, rgba(251, 253, 251, 0.055) 1px, transparent 1px),
    linear-gradient(180deg, rgba(251, 253, 251, 0.055) 1px, transparent 1px);
  background-size: 24px 24px;
  border-color: transparent;
  color: var(--mist);
}
.panel--ink h2,
.panel--ink h3,
.panel--ink h4 { color: var(--mist); }
.panel--ink .panel__note { color: rgba(251, 253, 251, 0.7); }

.panel--deep { background-color: var(--ink-deep); border-color: transparent; color: var(--mist); }
.panel--deep h2,
.panel--deep h3 { color: var(--mist); }

.panel--accent { background-color: var(--orange); border-color: transparent; color: var(--black); }
.panel--wire { background-color: transparent; border-style: dashed; }

.panel__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}
.panel__title { font-size: 18px; font-weight: 800; letter-spacing: -0.01em; }
.panel__note { font-size: 13px; color: var(--gray); }

.lift {
  transition: transform var(--step) var(--ease), border-color var(--step) var(--ease);
}
.lift::before {
  content: "";
  position: absolute;
  left: 0;
  right: var(--cut);
  bottom: 0;
  height: 2px;
  background-color: var(--orange);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--step) var(--ease);
  pointer-events: none;
}
.lift:hover,
.lift:focus-within { transform: translateY(-4px); }
.lift:hover::before,
.lift:focus-within::before { transform: scaleX(1); }

/* ---------- 9. 数据与标记部件 ---------- */
.idx {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
}
.idx::before {
  content: "";
  width: 14px;
  height: 2px;
  background-color: currentColor;
  opacity: 0.5;
}
.idx--blue { color: var(--blue); }
.idx--orange { color: var(--orange); }
.idx--ink { color: var(--ink); }

.h-rule {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 800;
}
.h-rule::before {
  content: "";
  flex: none;
  width: 22px;
  height: 2px;
  background-color: var(--blue);
  transform: skewX(-12deg);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--black);
  background-color: var(--paper-2);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%);
}
.tag--orange { background-color: var(--orange); border-color: transparent; color: var(--black); }
.tag--blue { background-color: transparent; border-color: var(--blue); color: var(--ink); }
.tag--ink { background-color: var(--ink); border-color: transparent; color: var(--mist); }
.tag--quiet { background-color: transparent; border-color: transparent; color: var(--gray); }

.star {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--gray);
  background-color: transparent;
  border: 1px solid var(--line);
  cursor: pointer;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%);
  transition: color var(--step) var(--ease), background-color var(--step) var(--ease), border-color var(--step) var(--ease);
}
.star:hover { color: var(--black); border-color: var(--orange); }
.star__icon {
  width: 12px;
  height: 12px;
  background-color: currentColor;
  clip-path: polygon(50% 0, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
}
.star[aria-pressed="true"] { background-color: var(--orange-soft); border-color: var(--orange); color: var(--black); }
.star[aria-pressed="true"] .star__icon { background-color: var(--orange); }

.meter {
  display: block;
  position: relative;
  height: 8px;
  background-color: var(--orange-soft);
  border: 1px solid var(--line-soft);
  overflow: hidden;
}
.meter__fill {
  display: block;
  height: 100%;
  width: 0;
  background-color: var(--ink);
  transition: width 600ms var(--ease);
}
.meter__fill[data-tone="blue"] { background-color: var(--blue); }
.meter__fill[data-tone="orange"] { background-color: var(--orange); }
.meter__fill[data-tone="green"] { background-color: var(--green); }

.band {
  position: relative;
  overflow: hidden;
  padding-block: clamp(18px, 3vw, 30px);
  background-color: var(--ink);
  color: var(--mist);
}
.band::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(100deg, rgba(41, 211, 232, 0.1) 0 2px, transparent 2px 14px);
}
.band--orange { background-color: var(--orange); color: var(--black); }
.band--orange h2,
.band--orange h3 { color: var(--black); }
.band__inner {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.crumbs { padding-block: 14px; }
.crumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gray);
}
.crumbs__item { display: flex; align-items: center; gap: 8px; }
.crumbs__item + .crumbs__item::before { content: "／"; color: var(--gray); }
.crumbs__link { color: var(--gray); text-decoration: none; }
.crumbs__link:hover { color: var(--ink); text-decoration: underline; }
.crumbs__item[aria-current="page"] { color: var(--ink); }

/* ---------- 10. 图片容器（页面阶段放置素材） ---------- */
.img-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background-color: var(--paper-2);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}
.img-frame > img,
.img-frame > svg,
.img-frame > picture > img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.img-frame--wide { aspect-ratio: 16 / 9; }
.img-frame--photo { aspect-ratio: 3 / 2; }
.img-frame--square { aspect-ratio: 1 / 1; }
.img-frame--tall { aspect-ratio: 4 / 5; }
.img-frame__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  background-color: var(--ink-deep);
  color: var(--mist);
}

/* ---------- 11. 显现动效 ---------- */
[data-reveal] { opacity: 1; }

.js-ready [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 420ms var(--ease), transform 420ms var(--ease);
}
.js-ready [data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------- 12. 响应式 ---------- */
@media (max-width: 1240px) {
  .site-nav__link { font-size: 13px; padding: 10px 9px; }
}

@media (max-width: 1080px) {
  .site-index { display: none; }
}

@media (max-width: 880px) {
  body { padding-bottom: 64px; }

  .site-header__inner { min-height: 62px; gap: 10px; }
  .site-header__left { gap: 10px; }
  .site-header__right { gap: 8px; }
  .zone-switch__toggle { padding: 7px 10px; }

  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 90;
    background-color: var(--ink-deep);
    border-top: 1px solid var(--line-invert);
    transition: box-shadow var(--step) var(--ease);
  }
  .site-nav__list {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    gap: 0;
    padding: 0 6px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .site-nav__list::-webkit-scrollbar { display: none; }
  .site-nav__link {
    padding: 15px 12px;
    font-size: 14px;
    color: var(--mist);
    clip-path: none;
  }
  .site-nav__link:hover { background-color: rgba(251, 253, 251, 0.08); }
  .site-nav__link[aria-current="page"] { background-color: var(--orange); color: var(--black); }
  .site-nav__idx { color: var(--blue); }
  .site-nav__link[aria-current="page"] .site-nav__idx { color: rgba(20, 23, 26, 0.6); }

  .site-nav[data-open="true"] { box-shadow: 0 -20px 40px rgba(8, 33, 29, 0.34); }
  .site-nav[data-open="true"] .site-nav__list {
    flex-wrap: wrap;
    overflow: visible;
    padding: 10px 10px 14px;
    gap: 4px;
  }
  .site-nav[data-open="true"] .site-nav__link {
    flex: 1 1 45%;
    white-space: normal;
    border: 1px solid var(--line-invert);
  }
}

@media (max-width: 720px) {
  .bento { gap: 16px; }
  .zone-switch__panel { left: auto; right: 0; }
}

@media (max-width: 640px) {
  .brand__lockup { display: none; }
  .watch__label { display: none; }
  .zone-switch__label { display: none; }
  .site-footer__nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 640px) {
  .site-footer__nav { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 720px) {
  .bento__unit--1x1 { grid-column: span 6; }
  .bento__unit--2x1 { grid-column: span 6; }
  .bento__unit--2x2 { grid-column: span 6; }
  .bento__unit--3x2 { grid-column: span 12; }
}

@media (min-width: 900px) {
  .site-footer__inner { grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.6fr); }
}

@media (min-width: 1100px) {
  .bento__unit--1x1 { grid-column: span 3; }
  .bento__unit--2x1 { grid-column: span 6; }
  .bento__unit--2x2 { grid-column: span 6; }
  .bento__unit--3x2 { grid-column: span 9; }
}

/* ---------- 13. 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .js-ready [data-reveal] { opacity: 1; transform: none; }
  .lift:hover,
  .lift:focus-within,
  .btn:hover { transform: none; }
  .lift:hover::before,
  .lift:focus-within::before { transform: none; }
  .meter__fill { transition: none; }
  .site-header__progress > span { transition: none; }
}