/* ==========================================================================
   凤凰体育主站 · 共享样式表 /assets/site.css
   设计语言：深空黑展墙 · 凤凰焰红动势 · 熔金数据 · 米白呼吸留白
   ========================================================================== */

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

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

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

/* --- 2. 设计令牌 --------------------------------------------------------- */
:root {
  --ink: #0B0B0F;
  --ink-2: #17181E;
  --flame: #E23A2E;
  --flame-lite: #FF6B57;
  --gold: #E6A73C;
  --cool: #9AA0A6;
  --stone: #5E6266;
  --bone: #F3EFE7;
  --moss: #6F7F5A;
  --clay: #B4573D;

  --line: rgba(243, 239, 231, 0.12);
  --line-2: rgba(243, 239, 231, 0.26);
  --ink-line: rgba(11, 11, 15, 0.12);
  --ink-line-2: rgba(11, 11, 15, 0.22);

  --shell: 1280px;
  --gutter: clamp(18px, 4vw, 60px);
  --sec: clamp(56px, 8vw, 120px);

  --r-cap: 999px;
  --r-lg: 22px;
  --r-md: 14px;
  --r-sm: 9px;

  --ease: cubic-bezier(0.22, 0.72, 0.3, 1);
  --shadow-cap: 0 24px 60px -30px rgba(0, 0, 0, 0.95), inset 0 1px 0 rgba(243, 239, 231, 0.07);
  --shadow-card: 0 34px 70px -42px rgba(0, 0, 0, 0.95);

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", "Courier New", monospace;

  --z-header: 90;
}

/* --- 3. 中文排版与页面底色 ---------------------------------------------- */
body {
  background-color: var(--ink);
  background-image:
    radial-gradient(72% 42% at 94% -2%, rgba(226, 58, 46, 0.16), transparent 70%),
    radial-gradient(52% 34% at -2% 6%, rgba(230, 167, 60, 0.09), transparent 72%);
  background-repeat: no-repeat;
  background-size: 100% 880px, 100% 720px;
  color: var(--bone);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.16;
}

h1 { font-size: clamp(2.4rem, 6.2vw, 4.4rem); }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.4rem); }
h3 { font-size: clamp(1.1rem, 1.9vw, 1.45rem); }

strong, b { font-weight: 800; color: var(--bone); }
em { font-style: normal; color: var(--flame-lite); }

::selection { background: var(--flame); color: #fff; }

#main-content { scroll-margin-top: 108px; }

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 6px;
}

/* --- 4. 工具类 ----------------------------------------------------------- */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.shell {
  width: min(var(--shell), 100%);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.lede {
  font-size: clamp(1rem, 1.5vw, 1.14rem);
  line-height: 1.85;
  color: var(--cool);
  max-width: 70ch;
}

.prose { max-width: 70ch; }
.prose p { margin-bottom: 1.15em; color: var(--cool); line-height: 1.85; }
.prose h2, .prose h3 { margin: 2em 0 0.7em; color: var(--bone); }
.prose ul, .prose ol { margin: 0 0 1.2em 1.2em; color: var(--cool); }
.prose li { margin-bottom: 0.5em; }

.rot-label {
  display: inline-block;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.28em;
  color: var(--stone);
  text-transform: uppercase;
}

/* --- 5. 跳转链接 --------------------------------------------------------- */
.skip-link {
  position: absolute;
  left: 50%;
  top: 8px;
  transform: translate(-50%, -180%);
  z-index: 200;
  padding: 10px 22px;
  border-radius: var(--r-cap);
  background: var(--gold);
  color: #1B1206;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.04em;
  transition: transform 0.24s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible { transform: translate(-50%, 0); outline-offset: 2px; }

/* --- 6. 头部浮岛 --------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  padding: 14px var(--gutter) 0;
  transition: padding 0.34s var(--ease);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 11, 15, 0.96) 0%, rgba(11, 11, 15, 0.76) 48%, rgba(11, 11, 15, 0) 100%);
  pointer-events: none;
}

.site-header[data-compact="true"] { padding-top: 7px; }

.nav-shell {
  position: relative;
  width: min(var(--shell), 100%);
  margin-inline: auto;
}

.nav-capsule {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 24px);
  padding: 10px 12px 10px 16px;
  border-radius: var(--r-cap);
  background: linear-gradient(115deg, rgba(23, 24, 30, 0.96), rgba(11, 11, 15, 0.94));
  border: 1px solid var(--line);
  box-shadow: var(--shadow-cap);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: padding 0.34s var(--ease), border-color 0.3s var(--ease);
}

.site-header[data-compact="true"] .nav-capsule { padding: 6px 10px 6px 14px; }

.nav-capsule::after {
  content: "";
  position: absolute;
  left: 26px;
  right: 26px;
  bottom: 5px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--flame), var(--gold) 62%, rgba(230, 167, 60, 0));
  transform: scaleX(var(--scroll, 0));
  transform-origin: left center;
  opacity: 0.9;
  pointer-events: none;
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
  min-width: 0;
}

.brand-mark {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border-radius: 11px;
  display: grid;
  place-items: center;
  font-size: 15px;
  font-weight: 900;
  letter-spacing: -0.04em;
  color: #0B0B0F;
  background: conic-gradient(from 215deg at 32% 30%,
    var(--flame) 0 22%, var(--gold) 22% 46%, var(--flame-lite) 46% 74%, var(--clay) 74% 100%);
  box-shadow: inset 0 0 0 1px rgba(11, 11, 15, 0.3), 0 10px 22px -12px rgba(226, 58, 46, 0.85);
}

.brand-text { display: flex; flex-direction: column; line-height: 1.18; min-width: 0; }

.brand-name {
  font-size: 15.5px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--bone);
  white-space: nowrap;
}

.brand-tag {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--flame-lite);
  white-space: nowrap;
}

/* 导航 */
.nav-main {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  justify-content: center;
}

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

.nav-list > li { display: flex; }

.nav-link {
  display: block;
  padding: 8px 13px;
  border-radius: var(--r-cap);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--cool);
  white-space: nowrap;
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease), box-shadow 0.24s var(--ease);
}

.nav-link:hover { color: var(--bone); background: rgba(243, 239, 231, 0.07); }

.nav-link[aria-current="page"] {
  color: var(--bone);
  background: linear-gradient(120deg, rgba(226, 58, 46, 0.28), rgba(230, 167, 60, 0.14));
  box-shadow: inset 0 0 0 1px rgba(255, 107, 87, 0.34);
}

/* 右侧尾部 */
.nav-tail {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  flex: 0 0 auto;
}

.season-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 13px 6px 11px;
  border-radius: var(--r-cap);
  border: 1px solid var(--line-2);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--cool);
  white-space: nowrap;
}

.season-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--flame);
  box-shadow: 0 0 0 3px rgba(226, 58, 46, 0.18);
  animation: pulseDot 2.6s var(--ease) infinite;
}

@keyframes pulseDot {
  0%, 100% { box-shadow: 0 0 0 3px rgba(226, 58, 46, 0.2); }
  50% { box-shadow: 0 0 0 8px rgba(226, 58, 46, 0.02); }
}

/* 汉堡 */
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: var(--r-cap);
  border: 1px solid var(--line-2);
  background: rgba(243, 239, 231, 0.04);
  transition: background-color 0.22s var(--ease), border-color 0.22s var(--ease);
}
.nav-toggle:hover { background: rgba(243, 239, 231, 0.1); border-color: var(--bone); }

.nav-toggle-bar {
  display: block;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: var(--bone);
  transition: transform 0.26s var(--ease), opacity 0.2s var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(3.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { transform: translateY(-3.5px) rotate(-45deg); }

/* --- 7. 按钮 ------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: var(--r-cap);
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.2s var(--ease), background-color 0.24s var(--ease),
              color 0.24s var(--ease), border-color 0.24s var(--ease), box-shadow 0.24s var(--ease);
}
.btn:active { transform: translateY(1px); }

.btn--flame {
  background: linear-gradient(120deg, var(--flame), #C42C22);
  color: #fff;
  box-shadow: 0 16px 36px -20px rgba(226, 58, 46, 0.95);
}
.btn--flame:hover {
  background: linear-gradient(120deg, var(--flame-lite), var(--flame));
  transform: translateY(-1px);
}

.btn--gold {
  background: linear-gradient(120deg, var(--gold), #C98A22);
  color: #1B1206;
  box-shadow: 0 16px 36px -22px rgba(230, 167, 60, 0.95);
}
.btn--gold:hover { background: linear-gradient(120deg, #F2BB58, var(--gold)); transform: translateY(-1px); }

.btn--ghost {
  background: rgba(243, 239, 231, 0.04);
  color: var(--bone);
  border-color: var(--line-2);
}
.btn--ghost:hover { background: rgba(243, 239, 231, 0.1); border-color: var(--bone); }

.btn--dark {
  background: var(--ink);
  color: var(--bone);
  border-color: var(--ink-line);
}
.btn--dark:hover { background: var(--ink-2); }

.btn--sm { padding: 8px 15px; font-size: 13px; }
.btn--lg { padding: 15px 30px; font-size: 16px; }
.btn--block { width: 100%; }

/* --- 8. 面包屑 ----------------------------------------------------------- */
.breadcrumb { padding-block: 22px 6px; font-size: 12.5px; color: var(--stone); }
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.breadcrumb li { display: flex; align-items: center; gap: 10px; }
.breadcrumb li + li::before { content: "/"; color: var(--stone); opacity: 0.5; }
.breadcrumb a { color: var(--cool); transition: color 0.2s var(--ease); }
.breadcrumb a:hover { color: var(--flame-lite); }
.breadcrumb [aria-current="page"] { color: var(--bone); font-weight: 600; }

/* --- 9. 分区 / 网格 / 卡片 ---------------------------------------------- */
.section { padding-block: var(--sec); }
.section--ink { background: var(--ink-2); }
.section--bone { background: var(--bone); color: var(--ink); }
.section--bone h1, .section--bone h2, .section--bone h3, .section--bone strong { color: var(--ink); }
.section--bone .lede, .section--bone .prose p { color: #4A4B52; }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px 32px;
  margin-bottom: clamp(26px, 3.2vw, 46px);
}

.section-head__kicker {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--flame-lite);
}

.section-head__title { max-width: 22ch; }

.grid { display: grid; gap: clamp(16px, 2vw, 26px); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--auto { grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr)); }

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(18px, 2.2vw, 26px);
  border-radius: var(--r-lg);
  background: linear-gradient(150deg, rgba(23, 24, 30, 0.96), rgba(11, 11, 15, 0.9));
  border: 1px solid var(--line);
  transition: border-color 0.26s var(--ease), transform 0.26s var(--ease), box-shadow 0.26s var(--ease);
}
.card:hover { border-color: var(--line-2); transform: translateY(-3px); box-shadow: var(--shadow-card); }

.card--bone {
  background: var(--bone);
  color: var(--ink);
  border-color: var(--ink-line);
}
.card--bone .card__text { color: #4A4B52; }
.card--bone .card__foot { color: var(--stone); }

.card--flame {
  background: linear-gradient(140deg, rgba(226, 58, 46, 0.24), rgba(11, 11, 15, 0.92));
  border-color: rgba(255, 107, 87, 0.32);
}

.card__kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--flame-lite);
}

.card__title { font-size: clamp(1.05rem, 1.6vw, 1.3rem); font-weight: 800; letter-spacing: -0.01em; }

.card__text { font-size: 14.5px; line-height: 1.82; color: var(--cool); max-width: 36ch; }

.card__foot {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 6px;
  font-size: 12.5px;
  color: var(--stone);
}

/* --- 10. 标签与数据 ------------------------------------------------------ */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border-radius: var(--r-cap);
  border: 1px solid var(--line-2);
  background: rgba(243, 239, 231, 0.03);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--cool);
  white-space: nowrap;
}
.tag--flame { border-color: rgba(255, 107, 87, 0.42); color: var(--flame-lite); background: rgba(226, 58, 46, 0.14); }
.tag--gold { border-color: rgba(230, 167, 60, 0.42); color: var(--gold); background: rgba(230, 167, 60, 0.1); }
.tag--moss { border-color: rgba(111, 127, 90, 0.58); color: #A3B48A; background: rgba(111, 127, 90, 0.16); }
.tag--clay { border-color: rgba(180, 87, 61, 0.52); color: #D9876A; background: rgba(180, 87, 61, 0.16); }
.tag--bone { border-color: var(--ink-line-2); color: var(--ink); background: transparent; }

.stat {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--gold);
}
.stat--flame { color: var(--flame-lite); }
.stat--bone { color: var(--bone); }

/* --- 11. 媒体容器（页面阶段挂图） --------------------------------------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--r-lg);
  isolation: isolate;
  background:
    radial-gradient(120% 120% at 14% 8%, rgba(226, 58, 46, 0.24), transparent 62%),
    radial-gradient(90% 90% at 92% 96%, rgba(230, 167, 60, 0.14), transparent 66%),
    linear-gradient(140deg, #17181E, #0B0B0F);
}

.media > img,
.media > picture > img,
.media > video,
.media > svg {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media__cap {
  position: absolute;
  left: 14px;
  bottom: 12px;
  padding: 5px 12px;
  border-radius: var(--r-cap);
  background: rgba(11, 11, 15, 0.72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--bone);
}

.media--21x9 { aspect-ratio: 21 / 9; }
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }

@supports not (aspect-ratio: 1 / 1) {
  .media { min-height: 220px; }
}

/* --- 12. 折叠面板 -------------------------------------------------------- */
.panel {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(23, 24, 30, 0.62);
  overflow: hidden;
}
.panel + .panel { margin-top: 10px; }

.panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 16px 18px;
  text-align: left;
  font-size: 15px;
  font-weight: 700;
  color: var(--bone);
  transition: background-color 0.22s var(--ease);
}
.panel__head:hover { background: rgba(243, 239, 231, 0.045); }
.panel[data-open] .panel__head { color: var(--flame-lite); }

.panel__icon {
  position: relative;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid var(--line-2);
}
.panel__icon::before,
.panel__icon::after {
  content: "";
  position: absolute;
  left: 5px;
  right: 5px;
  top: 50%;
  height: 1.5px;
  border-radius: 2px;
  background: var(--gold);
  transform: translateY(-50%);
  transition: transform 0.28s var(--ease), opacity 0.28s var(--ease);
}
.panel__icon::after { transform: translateY(-50%) rotate(90deg); }
.panel[data-open] .panel__icon::after { transform: translateY(-50%) rotate(0deg); opacity: 0; }

.panel__body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.32s var(--ease);
}
.panel[data-open] .panel__body { grid-template-rows: 1fr; }

.panel__clip { overflow: hidden; }

.panel__inner {
  padding: 0 18px 18px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--cool);
}

/* --- 13. 页脚 ------------------------------------------------------------ */
.site-footer {
  position: relative;
  margin-top: clamp(64px, 10vw, 140px);
  background: linear-gradient(180deg, #0B0B0F 0%, #09090C 58%, #050507 100%);
  border-top: 1px solid var(--line);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--flame) 0%, var(--gold) 40%, rgba(230, 167, 60, 0) 82%);
}

.site-footer::after {
  content: "";
  position: absolute;
  right: -16%;
  top: -46%;
  width: min(680px, 74vw);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(226, 58, 46, 0.17), transparent 62%);
  pointer-events: none;
}

.footer-shell {
  position: relative;
  z-index: 1;
  width: min(var(--shell), 100%);
  margin-inline: auto;
  padding: clamp(44px, 6vw, 82px) var(--gutter) 0;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(230px, 1.35fr) repeat(3, minmax(0, 1fr));
  gap: clamp(28px, 3.4vw, 56px);
  padding-bottom: clamp(34px, 4.6vw, 62px);
  border-bottom: 1px solid var(--line);
}

.footer-brand { min-width: 0; }

.brand--footer .brand-mark { width: 30px; height: 30px; border-radius: 10px; font-size: 13px; }
.brand--footer .brand-name { font-size: 15px; }

.footer-copy {
  margin-top: 18px;
  max-width: 32ch;
  font-size: 13.5px;
  line-height: 1.88;
  color: var(--cool);
}

.footer-note {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--stone);
}

.footer-col { min-width: 0; }

.footer-col-title {
  margin-bottom: 16px;
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--flame-lite);
}

.footer-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.footer-list a {
  display: inline-block;
  font-size: 14px;
  color: var(--cool);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.footer-list a:hover { color: var(--bone); border-color: var(--flame); }

.footer-list--plain li {
  font-size: 13.5px;
  color: var(--stone);
  line-height: 1.7;
}

.footer-contact { display: grid; gap: 11px; }
.footer-contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--cool);
}
.footer-contact-key {
  flex: 0 0 auto;
  min-width: 62px;
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--stone);
}
.footer-contact-row .mono { font-size: 12.5px; color: var(--bone); word-break: break-all; }
.footer-contact-note { font-size: 12px; line-height: 1.75; color: var(--stone); }

.footer-season {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 28px;
  margin-top: clamp(28px, 3.4vw, 46px);
  padding: clamp(18px, 2.4vw, 26px) clamp(20px, 3vw, 32px);
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: linear-gradient(115deg, rgba(226, 58, 46, 0.15), rgba(230, 167, 60, 0.06) 56%, rgba(11, 11, 15, 0) 100%);
}

.footer-season__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold);
  white-space: nowrap;
}

.footer-season__text {
  flex: 1 1 320px;
  max-width: 68ch;
  font-size: 14px;
  line-height: 1.82;
  color: var(--cool);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 26px;
  padding: 24px 0 34px;
  font-size: 12.5px;
  color: var(--stone);
}
.footer-base a { color: var(--cool); transition: color 0.2s var(--ease); }
.footer-base a:hover { color: var(--flame-lite); }
.footer-copyright { color: var(--stone); }
.footer-icp {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--stone);
}

/* --- 14. 返回顶部 -------------------------------------------------------- */
.to-top {
  position: fixed;
  right: clamp(14px, 3vw, 32px);
  bottom: clamp(14px, 3vw, 32px);
  z-index: 70;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 46px;
  padding: 0 20px;
  border-radius: var(--r-cap);
  background: linear-gradient(120deg, var(--flame), #B82A20);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  box-shadow: 0 20px 42px -22px rgba(226, 58, 46, 0.95);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease), visibility 0.28s linear, background-color 0.24s var(--ease);
}
.to-top[data-visible="true"] { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: linear-gradient(120deg, var(--flame-lite), var(--flame)); }

/* --- 15. 入场显现 -------------------------------------------------------- */
html.js-ready [data-anim] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.56s var(--ease), transform 0.56s var(--ease);
}
html.js-ready [data-anim].is-in { opacity: 1; transform: none; }

/* --- 16. 响应式 ---------------------------------------------------------- */
@media (max-width: 1200px) {
  .nav-list { gap: 0; }
  .nav-link { padding: 8px 11px; font-size: 13.5px; }
}

@media (max-width: 1080px) {
  .footer-top { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
  .footer-copy { max-width: 52ch; }
}

@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 960px) {
  .site-header { padding-top: 10px; }
  .nav-toggle { display: inline-flex; }
  .season-chip { display: none; }

  .nav-main {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    z-index: 5;
    display: none;
    padding: 10px;
    border-radius: var(--r-lg);
    background: linear-gradient(150deg, rgba(23, 24, 30, 0.99), rgba(11, 11, 15, 0.99));
    border: 1px solid var(--line-2);
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    max-height: min(74vh, 560px);
    overflow-y: auto;
  }

  .nav-main[data-open] { display: block; animation: navDrop 0.3s var(--ease) both; }

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

  .nav-list { flex-direction: column; align-items: stretch; gap: 2px; }
  .nav-link { padding: 13px 16px; border-radius: var(--r-md); font-size: 15px; }
  .nav-link[aria-current="page"] { box-shadow: none; background: linear-gradient(100deg, rgba(226, 58, 46, 0.3), rgba(226, 58, 46, 0) 88%); }

  .nav-capsule::after { left: 20px; right: 20px; }

  .breadcrumb { padding-top: 16px; }
}

@media (max-width: 760px) {
  .grid--2 { grid-template-columns: 1fr; }
  .grid--3 { grid-template-columns: 1fr; }
  .grid--4 { grid-template-columns: 1fr; }
  .footer-base { gap: 10px 20px; }
  .to-top { padding: 0 16px; font-size: 12px; height: 42px; }
}

@media (max-width: 640px) {
  .footer-top { grid-template-columns: 1fr; gap: 30px; }
  .footer-contact-key { min-width: 56px; }
  .nav-tail .btn { padding: 9px 14px; font-size: 13px; }
  .media__cap { left: 12px; bottom: 10px; font-size: 11px; }
}

@media (max-width: 520px) {
  .brand-tag { display: none; }
  .brand-name { font-size: 14.5px; }
  .brand-mark { width: 30px; height: 30px; border-radius: 10px; font-size: 13px; }
  .footer-season__label { display: none; }
}

/* --- 17. 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;
  }

  .season-dot { animation: none; }

  html.js-ready [data-anim],
  html.js-ready [data-anim].is-in {
    opacity: 1 !important;
    transform: none !important;
  }

  .to-top { transition: opacity 0.001ms linear, visibility 0.001ms linear; }
}