/* ===========================================================
   壹趣看台 · /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 头部 / 页脚 / 基础组件
   =========================================================== */

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

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

body {
  margin: 0;
  padding-left: var(--rail-w);
  background: var(--ink-green);
  color: var(--chalk);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img, svg, video { max-width: 100%; display: block; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }
hr { border: 0; }

/* ---------- 变量 ---------- */
:root {
  --ink-green: #0B3D2E;
  --night-green: #07241A;
  --panel-green: #14523C;
  --paper: #F4EDDF;
  --lime: #B7F171;
  --orange: #FF7A3C;
  --grid-grey: #9FB3A6;
  --chalk: #F7FAF6;
  --paper-ink: #1C3A2C;
  --moss: #2E6B4F;

  --rail-w: 88px;
  --maxw: 1280px;
  --gutter: clamp(18px, 3vw, 40px);
  --cut: 16px;

  --line: rgba(159, 179, 166, 0.26);
  --line-strong: rgba(159, 179, 166, 0.48);

  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Source Han Sans SC", system-ui, -apple-system, sans-serif;
  --font-num: ui-monospace, "SFMono-Regular", "Menlo", "Consolas",
    "Roboto Mono", "Courier New", monospace;

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

/* ---------- 中文排版基线 ---------- */
body { letter-spacing: 0.01em; }
p { max-width: 42em; }
h1, h2, h3, h4 { line-height: 1.28; font-weight: 700; letter-spacing: -0.01em; }
h1 { font-size: clamp(28px, 4vw, 40px); }
h2 { font-size: clamp(22px, 2.8vw, 28px); }
h3 { font-size: clamp(18px, 2vw, 20px); }
small { font-size: 12px; }

.num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  letter-spacing: -0.01em;
}

.label-vert {
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--grid-grey);
  line-height: 1;
}

/* ---------- 焦点可见 ---------- */
:focus-visible {
  outline: 3px solid var(--lime);
  outline-offset: 3px;
}
.paper :focus-visible,
.panel--paper :focus-visible {
  outline-color: var(--orange);
  outline-offset: 3px;
}

/* ---------- skip link ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 300;
  padding: 11px 20px;
  background: var(--lime);
  color: var(--night-green);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
  transform: translateY(-180%);
  transition: transform 0.18s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline-offset: 4px;
}

/* ===========================================================
   头部
   =========================================================== */
.site-header {
  position: relative;
  z-index: 60;
  background: var(--night-green);
  color: var(--chalk);
  border-bottom: 1px solid var(--line-strong);
}

/* ---- 左侧固定品牌轨道 ---- */
.brand-rail {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--rail-w);
  z-index: 80;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 26px 0 20px;
  background: var(--night-green);
  border-right: 1px solid var(--line);
  overflow: hidden;
}
.brand-rail::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(183, 241, 113, 0.12), transparent 42%);
}
.brand-rail::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  top: 0;
  height: 3px;
  background: var(--lime);
}

.brand-rail__word {
  position: relative;
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.3em;
  color: var(--chalk);
  padding-top: 14px;
}
.brand-rail__round {
  position: relative;
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--lime);
  padding: 8px 0;
  border-top: 1px solid rgba(183, 241, 113, 0.42);
  border-bottom: 1px solid rgba(183, 241, 113, 0.42);
}
.brand-rail__saved {
  position: relative;
  writing-mode: vertical-rl;
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--grid-grey);
}

/* ---- 刊头 ---- */
.header-body {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.masthead {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  padding: 20px 0 14px;
}

.masthead__kicker {
  justify-self: start;
  font-size: 11px;
  letter-spacing: 0.26em;
  color: var(--grid-grey);
  line-height: 1.9;
  text-transform: uppercase;
  border-left: 3px solid var(--orange);
  padding-left: 10px;
  max-width: 15em;
}

.masthead__centre {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.masthead__wordmark {
  position: relative;
  display: inline-block;
  font-size: clamp(30px, 4.2vw, 54px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--chalk);
  padding-bottom: 10px;
}
.masthead__wordmark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  background-image: repeating-linear-gradient(
    90deg,
    var(--lime) 0 12px,
    transparent 12px 19px
  );
  opacity: 0.9;
}
.masthead__wordmark:hover {
  color: var(--lime);
}

.masthead__note {
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--grid-grey);
  line-height: 1;
  align-self: center;
}

.masthead__actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ---- 移动导航按钮 ---- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 12px 14px;
  background: var(--panel-green);
  color: var(--chalk);
  border: 1px solid var(--line-strong);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  transition: background 0.18s var(--ease), color 0.18s var(--ease);
}
.nav-toggle:hover {
  background: var(--moss);
}
.nav-toggle__label { flex: 1 1 auto; text-align: left; }
.nav-toggle__icon {
  position: relative;
  flex: none;
  width: 22px;
  height: 2px;
  background: var(--lime);
}
.nav-toggle__icon::before,
.nav-toggle__icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 22px;
  height: 2px;
  background: var(--lime);
  transition: transform 0.22s var(--ease);
}
.nav-toggle__icon::before { top: -7px; }
.nav-toggle__icon::after { top: 7px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::before { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::after { transform: translateY(-7px) rotate(-45deg); }

/* ---- 主导航 ---- */
.main-nav {
  display: block;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.nav-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}
.nav-list > li { position: relative; }
.nav-list > li + li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 1px;
  height: 14px;
  transform: translateY(-50%);
  background: var(--line);
}
.nav-list a {
  position: relative;
  display: block;
  padding: 13px clamp(12px, 2vw, 22px);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: rgba(247, 250, 246, 0.82);
  transition: color 0.18s var(--ease);
}
.nav-list a::after {
  content: "";
  position: absolute;
  left: clamp(12px, 2vw, 22px);
  right: clamp(12px, 2vw, 22px);
  bottom: 8px;
  height: 3px;
  background: var(--lime);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.24s var(--ease);
}
.nav-list a:hover,
.nav-list a:focus-visible { color: var(--chalk); }
.nav-list a:hover::after,
.nav-list a:focus-visible::after { transform: scaleX(1); }
.nav-list a[aria-current="page"] { color: var(--lime); }
.nav-list a[aria-current="page"]::after { transform: scaleX(1); }

/* ---- 轮次比分条 ---- */
.round-strip {
  position: relative;
  display: flex;
  align-items: stretch;
  background: rgba(7, 36, 26, 0.9);
  border-bottom: 1px solid var(--line);
}
.round-strip__btn {
  flex: none;
  width: 42px;
  background: var(--panel-green);
  color: var(--lime);
  font-size: 20px;
  line-height: 1;
  transition: background 0.18s var(--ease), color 0.18s var(--ease);
}
.round-strip__btn:hover,
.round-strip__btn:focus-visible {
  background: var(--lime);
  color: var(--night-green);
}
.round-strip__track {
  display: flex;
  flex: 1 1 auto;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  cursor: grab;
  user-select: none;
}
.round-strip__track::-webkit-scrollbar { display: none; }
.round-strip__track[data-dragging="true"] { cursor: grabbing; }

.round-item {
  flex: 0 0 auto;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 18px;
  border-right: 1px solid var(--line);
  font-size: 12px;
  white-space: nowrap;
}
.round-item__no {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--grid-grey);
}
.round-item__score {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  font-weight: 700;
  color: var(--chalk);
}
.round-item__teams {
  color: rgba(247, 250, 246, 0.58);
  letter-spacing: 0.04em;
}
.round-item--now {
  background: rgba(183, 241, 113, 0.1);
  box-shadow: inset 0 -3px 0 var(--lime);
}
.round-item--now .round-item__score { color: var(--lime); }
.round-item--next .round-item__score {
  font-size: 12px;
  color: var(--grid-grey);
}

/* ---- 顶部滚动进度条 ---- */
.scroll-meter {
  position: fixed;
  top: 0;
  left: var(--rail-w);
  right: 0;
  height: 3px;
  z-index: 95;
  pointer-events: none;
}
.scroll-meter__bar {
  display: block;
  width: 0;
  height: 100%;
  background: var(--lime);
  box-shadow: 0 0 12px rgba(183, 241, 113, 0.55);
}

/* ===========================================================
   页脚
   =========================================================== */
.site-footer {
  position: relative;
  background: var(--night-green);
  color: var(--chalk);
  border-top: 1px solid var(--line-strong);
}
.site-footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background-image: repeating-linear-gradient(
    90deg,
    var(--lime) 0 18px,
    transparent 18px 30px
  );
  opacity: 0.75;
}

/* ---- 收藏提示条 ---- */
.footer-collect {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 18px;
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(26px, 3.4vw, 38px) var(--gutter);
  border-bottom: 1px solid var(--line);
}
.footer-collect__text {
  position: relative;
  padding-left: 18px;
  font-size: clamp(18px, 2.1vw, 26px);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.4;
  color: var(--chalk);
}
.footer-collect__text::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  background: var(--lime);
}

/* ---- 四栏 ---- */
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr 1.2fr;
  gap: clamp(20px, 3vw, 42px);
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(30px, 4vw, 52px) var(--gutter) clamp(26px, 3vw, 40px);
}

.footer-brand__name {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--chalk);
}
.footer-brand__desc {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(247, 250, 246, 0.6);
  max-width: 20em;
}
.footer-brand__meta {
  margin-top: 14px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--lime);
}

.footer-col__title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.26em;
  color: var(--lime);
  padding-bottom: 10px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.footer-list { display: block; }
.footer-list li { font-size: 14px; line-height: 1.7; }
.footer-list li + li { margin-top: 9px; }
.footer-list a {
  color: rgba(247, 250, 246, 0.72);
  transition: color 0.18s var(--ease);
}
.footer-list a:hover,
.footer-list a:focus-visible {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.footer-list--plain li {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  color: rgba(247, 250, 246, 0.7);
  font-size: 13px;
  line-height: 1.7;
}
.footer-list--plain li + li { margin-top: 12px; }
.footer-key {
  flex: none;
  min-width: 3em;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--grid-grey);
  padding-top: 2px;
}

.footer-note {
  margin-top: 14px;
  font-size: 12px;
  line-height: 1.75;
  color: rgba(159, 179, 166, 0.8);
  border-left: 2px solid var(--orange);
  padding-left: 10px;
  max-width: 22em;
}

/* ---- 法规条 ---- */
.footer-legal {
  border-top: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.22);
}
.footer-legal__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 16px var(--gutter) 26px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(247, 250, 246, 0.5);
}
.footer-legal__inner p { max-width: none; }
.footer-legal__links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
}
.footer-legal__links a {
  color: rgba(247, 250, 246, 0.58);
  transition: color 0.18s var(--ease);
}
.footer-legal__links a:hover,
.footer-legal__links a:focus-visible {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* ===========================================================
   通用组件
   =========================================================== */

/* ---- 容器与栅格 ---- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.grid {
  display: grid;
  gap: clamp(14px, 2vw, 24px);
}
.grid--4-6 { grid-template-columns: minmax(0, 4fr) minmax(0, 6fr); }
.grid--7-5 { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* ---- 按钮 ---- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px 11px 22px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1.2;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: background 0.18s var(--ease), color 0.18s var(--ease),
    border-color 0.18s var(--ease);
}
.btn::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: currentColor;
  opacity: 0.85;
}
.btn--signal {
  background: var(--lime);
  color: var(--night-green);
}
.btn--signal::before { background: var(--night-green); }
.btn--signal:hover { background: #c9ff8d; }

.btn--ghost {
  background: transparent;
  color: var(--chalk);
  border-color: var(--line-strong);
}
.btn--ghost::before { background: var(--moss); }
.btn--ghost:hover {
  border-color: var(--lime);
  color: var(--lime);
}
.btn--ghost:hover::before { background: var(--lime); }

.btn--alert {
  background: var(--orange);
  color: #26090A;
}
.btn--alert::before { background: #26090A; }
.btn--alert:hover { background: #ff9563; }

.btn--quiet {
  background: transparent;
  color: var(--grid-grey);
  border-color: transparent;
  padding-left: 14px;
}
.btn--quiet::before { background: transparent; width: 0; }
.btn--quiet:hover { color: var(--lime); }

/* ---- 面板 ---- */
.panel {
  position: relative;
  background: var(--panel-green);
  border: 1px solid var(--line);
  padding: clamp(16px, 2.2vw, 26px);
}
.panel--paper {
  background: var(--paper);
  color: var(--paper-ink);
  border-color: rgba(28, 58, 44, 0.16);
}
.panel--paper a { color: var(--paper-ink); }
.panel--cut {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}
.panel--notch {
  clip-path: polygon(var(--cut) 0, 100% 0, 100% 100%, 0 100%, 0 var(--cut));
}

.cut-corner {
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

/* ---- 数据网格叠加 ---- */
.grid-veil { position: relative; }
.grid-veil::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(159, 179, 166, 0.13) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(159, 179, 166, 0.13) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 78%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 78%);
}
.grid-veil > * { position: relative; z-index: 1; }

/* ---- 暖纸章节 ---- */
.paper {
  background: var(--paper);
  color: var(--paper-ink);
}
.paper a { color: var(--paper-ink); }
.paper a:hover { color: var(--night-green); }

/* ---- 标签 ---- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  font-size: 11px;
  letter-spacing: 0.14em;
  line-height: 1.6;
  white-space: nowrap;
  border: 1px solid var(--line-strong);
  background: rgba(7, 36, 26, 0.5);
  color: var(--grid-grey);
}
.tag--data {
  border-color: rgba(183, 241, 113, 0.5);
  background: rgba(183, 241, 113, 0.1);
  color: var(--lime);
}
.tag--alert {
  border-color: rgba(255, 122, 60, 0.55);
  background: rgba(255, 122, 60, 0.1);
  color: var(--orange);
}
.tag--paper {
  border-color: rgba(28, 58, 44, 0.28);
  background: rgba(28, 58, 44, 0.05);
  color: var(--paper-ink);
}

/* ---- 抬头与分隔 ---- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--grid-grey);
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--lime);
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px 20px;
  margin-bottom: clamp(14px, 2vw, 22px);
}
.section-head__title {
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.rule {
  height: 1px;
  background: var(--line);
  border: 0;
  margin: 0;
}
.rule--lime {
  height: 3px;
  width: 64px;
  background: var(--lime);
}

/* ---- 面包屑 ---- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 16px 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--grid-grey);
}
.breadcrumb a {
  color: rgba(247, 250, 246, 0.72);
  transition: color 0.18s var(--ease);
}
.breadcrumb a:hover,
.breadcrumb a:focus-visible { color: var(--lime); }
.breadcrumb__sep { color: rgba(159, 179, 166, 0.5); }
.breadcrumb [aria-current="page"] { color: var(--chalk); }

/* ---- 响应式图片容器（页面阶段放置素材） ---- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(135deg, var(--panel-green) 0%, var(--night-green) 100%);
}
.media > img,
.media > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.media__veil {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(159, 179, 166, 0.16) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(159, 179, 166, 0.16) 1px, transparent 1px);
  background-size: 32px 32px;
}
.media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 14px;
  font-size: 11px;
  letter-spacing: 0.14em;
  line-height: 1.6;
  color: var(--chalk);
  background: linear-gradient(0deg, rgba(7, 36, 26, 0.94), rgba(7, 36, 26, 0));
}
.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--21x9 { aspect-ratio: 21 / 9; }
.media--cut {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

/* ---- 显现动效协议 ---- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
[data-reveal][data-revealed="true"] {
  opacity: 1;
  transform: none;
}

/* ===========================================================
   响应式
   =========================================================== */
@media (max-width: 1100px) and (min-width: 901px) {
  .footer-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px 26px;
  }
  .footer-brand { grid-column: 1 / -1; }
  .masthead__kicker { max-width: 12em; }
}

@media (max-width: 900px) {
  :root {
    --rail-w: 0px;
    --cut: 10px;
  }

  .brand-rail { display: none; }

  .masthead {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px 12px;
    padding: 14px 0 10px;
  }
  .masthead__centre { order: 1; gap: 8px; }
  .masthead__actions { order: 2; }
  .masthead__kicker {
    order: 3;
    flex: 1 1 100%;
    max-width: none;
    font-size: 11px;
    letter-spacing: 0.2em;
  }
  .masthead__note { display: none; }
  .masthead__wordmark { font-size: clamp(26px, 7vw, 34px); }
  .masthead__actions .btn { padding: 9px 14px; font-size: 12px; letter-spacing: 0.06em; }
  .masthead__actions .btn--ghost { display: none; }

  .nav-toggle { display: flex; margin-bottom: 12px; }

  .main-nav {
    display: none;
    border-bottom: 0;
    margin-bottom: 12px;
  }
  .main-nav[data-open="true"] { display: block; }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    border-top: 1px solid var(--line);
  }
  .nav-list > li + li::before {
    left: 14px;
    right: 14px;
    top: 0;
    width: auto;
    height: 1px;
    transform: none;
  }
  .nav-list a { padding: 14px 14px; font-size: 15px; }
  .nav-list a::after {
    left: 14px;
    right: auto;
    width: 20px;
    bottom: 12px;
  }

  .round-strip__btn { width: 34px; font-size: 17px; }
  .round-item { padding: 9px 14px; gap: 8px; }

  .footer-collect {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px 20px;
  }
  .footer-brand { grid-column: 1 / -1; }
  .footer-legal__inner { flex-direction: column; align-items: flex-start; }

  .grid--4-6,
  .grid--7-5,
  .grid--3 { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 520px) {
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .round-item__teams { display: none; }
}

/* ---- 减少动态效果 ---- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::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 !important;
    transform: none !important;
  }
  .skip-link { transition: none; }
}