/* ===========================================================
   利升体育 · /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 头部 / 页脚 / 基础组件
   =========================================================== */

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

:root {
  /* 色彩 */
  --ink: #0D1411;
  --green-deep: #0C3B32;
  --green-mid: #175A4C;
  --lime: #C8F24E;
  --lime-soft: #E9FFB8;
  --orange: #FF7A2F;
  --amber: #FFB86B;
  --wine: #7A2136;
  --indigo: #2B2A5E;
  --bone: #F4F1E9;
  --mist: #9AA79F;
  --line: #2E4A42;

  /* 字体 */
  --font-display: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* 尺寸与节奏 */
  --rail-w: 88px;
  --radius-xl: 28px;
  --radius-lg: 24px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --radius-pill: 999px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 300ms;

  --shadow-card: 0 18px 44px -26px rgba(0, 0, 0, 0.95);
}

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

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--bone);
  background-color: var(--ink);
  background-image:
    linear-gradient(to right, rgba(46, 74, 66, 0.20) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(46, 74, 66, 0.20) 1px, transparent 1px),
    radial-gradient(130% 95% at 6% -12%, rgba(23, 90, 76, 0.62), transparent 58%),
    radial-gradient(95% 70% at 102% -6%, rgba(43, 42, 94, 0.34), transparent 62%);
  background-size: 96px 96px, 96px 96px, 100% 100%, 100% 100%;
  background-repeat: repeat, repeat, no-repeat, no-repeat;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.6em;
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--bone);
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a { color: var(--lime-soft); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--lime); }

ul, ol { margin: 0 0 1em; padding-left: 1.25em; }

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

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

hr {
  border: 0;
  height: 1px;
  background: var(--line);
  margin: 2em 0;
}

::selection {
  background: var(--lime);
  color: var(--ink);
}

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

/* ---------- 布局容器 ---------- */
.shell {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding-left: calc(var(--rail-w) + clamp(16px, 3vw, 44px));
  padding-right: clamp(16px, 3vw, 44px);
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.86em;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}

.u-skew {
  display: inline-block;
  transform: skewX(-3.5deg);
  transform-origin: left bottom;
}

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 50%;
  z-index: 300;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  background: var(--lime);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transform: translate(-50%, -180%);
  transition: transform 220ms var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible {
  transform: translate(-50%, 0);
  outline-offset: 4px;
}

/* ---------- 阅读进度 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 260;
  background: linear-gradient(90deg, var(--lime) 0%, var(--amber) 55%, var(--orange) 100%);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 120ms linear;
  pointer-events: none;
}

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

/* 左侧品牌轨 */
.brand-rail {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--rail-w);
  z-index: 240;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  background:
    radial-gradient(140% 40% at 50% 0%, rgba(200, 242, 78, 0.10), transparent 70%),
    linear-gradient(180deg, var(--green-deep) 0%, #0B211C 62%, var(--ink) 100%);
  border-right: 1px solid rgba(46, 74, 66, 0.9);
}

.brand-rail__link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  width: 100%;
  padding: 24px 0 28px;
  color: var(--bone);
  text-decoration: none;
}
.brand-rail__link:hover .brand-rail__word { color: var(--lime); }

.brand-rail__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 4px rgba(200, 242, 78, 0.16);
  flex: none;
}

.brand-rail__word {
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: 0.26em;
  line-height: 1;
  color: var(--bone);
  transition: color 220ms var(--ease);
}

.brand-rail__meta {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--mist);
  opacity: 0.8;
}

/* 悬浮胶囊导航 */
.nav-shell {
  position: fixed;
  top: 20px;
  left: calc(var(--rail-w) + 24px);
  right: 24px;
  z-index: 250;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  pointer-events: none;
  transition: top 320ms var(--ease);
}
.nav-shell.is-condensed { top: 10px; }

.nav-capsule {
  pointer-events: auto;
  display: flex;
  align-items: center;
  min-width: 0;
  padding: 7px;
  border-radius: var(--radius-pill);
  background: rgba(12, 59, 50, 0.80);
  border: 1px solid rgba(46, 74, 66, 0.95);
  box-shadow: 0 22px 44px -30px rgba(0, 0, 0, 0.95);
  -webkit-backdrop-filter: blur(14px) saturate(130%);
  backdrop-filter: blur(14px) saturate(130%);
  transition: padding 320ms var(--ease), background 320ms var(--ease);
}
.nav-shell.is-condensed .nav-capsule {
  padding: 5px;
  background: rgba(12, 59, 50, 0.92);
}

.nav-capsule__list {
  display: flex;
  align-items: center;
  gap: 3px;
  margin: 0;
  padding: 0;
  list-style: none;
  min-width: 0;
}

.nav-capsule__item { flex: none; }

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 15px;
  border-radius: var(--radius-pill);
  color: var(--bone);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.2;
  white-space: nowrap;
  text-decoration: none;
  transition: background 220ms var(--ease), color 220ms var(--ease), padding 320ms var(--ease);
}
.nav-link:hover {
  background: rgba(244, 241, 233, 0.10);
  color: var(--lime-soft);
}
.nav-link__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
  transition: color 220ms var(--ease);
}
.nav-link__label {
  display: inline-block;
  max-width: 9em;
  overflow: hidden;
  white-space: nowrap;
  transition: max-width 320ms var(--ease), opacity 240ms var(--ease);
}

.nav-link[aria-current="page"] {
  background: var(--lime);
  color: var(--ink);
  font-weight: 700;
}
.nav-link[aria-current="page"] .nav-link__idx { color: rgba(13, 20, 17, 0.62); }
.nav-link[aria-current="page"]:hover { background: var(--lime-soft); color: var(--ink); }

/* 收缩态：只留等宽索引号，当前栏目保留文字 */
.nav-shell.is-condensed .nav-link { padding: 7px 12px; }
.nav-shell.is-condensed .nav-link__label {
  max-width: 0;
  opacity: 0;
}
.nav-shell.is-condensed .nav-link[aria-current="page"] .nav-link__label {
  max-width: 9em;
  opacity: 1;
}

/* 次级入口 */
.nav-utility {
  pointer-events: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: none;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--orange);
  background: rgba(255, 122, 47, 0.10);
  color: var(--orange);
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  text-decoration: none;
  transition: background 220ms var(--ease), color 220ms var(--ease), transform 220ms var(--ease);
}
.nav-utility:hover {
  background: var(--orange);
  color: #180A03;
  transform: translateY(-1px);
}
.nav-utility__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex: none;
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  position: fixed;
  top: 8px;
  right: 12px;
  z-index: 270;
  align-items: center;
  gap: 8px;
  padding: 7px 14px 7px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(200, 242, 78, 0.45);
  background: rgba(12, 59, 50, 0.94);
  color: var(--lime);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: background 200ms var(--ease), border-color 200ms var(--ease);
}
.nav-toggle:hover { background: rgba(23, 90, 76, 0.98); }

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 18px;
  height: 12px;
}
.nav-toggle__bars i {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--lime);
  transition: transform 260ms var(--ease), opacity 200ms var(--ease);
}
.nav-toggle.is-open .nav-toggle__bars i:first-child {
  transform: translateY(3.5px) rotate(45deg);
}
.nav-toggle.is-open .nav-toggle__bars i:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}
.nav-toggle__text { letter-spacing: 0.04em; }

/* ===========================================================
   页脚
   =========================================================== */
.site-footer {
  position: relative;
  margin-top: clamp(64px, 9vw, 120px);
  padding-top: clamp(44px, 6vw, 76px);
  background:
    radial-gradient(90% 60% at 12% 0%, rgba(23, 90, 76, 0.55), transparent 65%),
    linear-gradient(168deg, #0C3B32 0%, #0A211C 46%, var(--ink) 100%);
  border-top: 1px solid rgba(46, 74, 66, 0.95);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -4%;
  right: -4%;
  height: 3px;
  background: linear-gradient(90deg, var(--lime) 0%, var(--amber) 42%, var(--orange) 70%, transparent 100%);
  transform: skewY(-0.9deg);
  transform-origin: left center;
}

.footer-glow {
  position: absolute;
  top: -120px;
  right: -60px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 242, 78, 0.16) 0%, transparent 68%);
  pointer-events: none;
}

.footer-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.25fr 0.85fr 1fr;
  gap: clamp(28px, 4vw, 56px);
  padding-bottom: clamp(28px, 4vw, 48px);
}

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

.footer-col__title {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lime);
}
.footer-col__title::before {
  content: "";
  width: 16px;
  height: 1px;
  background: var(--lime);
  flex: none;
}

/* 品牌块 */
.footer-brand__mark {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 3.2vw, 36px);
  line-height: 1.1;
  letter-spacing: 0.03em;
  color: var(--bone);
  text-decoration: none;
  transform: skewX(-4deg);
  transform-origin: left bottom;
  padding-right: 6px;
  transition: color 220ms var(--ease);
}
.footer-brand__mark:hover { color: var(--lime); }

.footer-brand__line {
  margin: 14px 0 16px;
  max-width: 24em;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 241, 233, 0.78);
}

.footer-brand__badge {
  display: inline-block;
  margin: 0 0 14px;
  padding: 5px 13px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 184, 107, 0.55);
  background: rgba(255, 184, 107, 0.10);
  color: var(--amber);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.footer-brand__icp {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--mist);
}

/* 页脚栏目列表 */
.footer-nav__list {
  display: grid;
  gap: 11px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.footer-nav__list a {
  display: inline-block;
  font-size: 14px;
  color: rgba(244, 241, 233, 0.84);
  text-decoration: none;
  transition: color 200ms var(--ease), transform 200ms var(--ease);
}
.footer-nav__list a:hover {
  color: var(--lime-soft);
  transform: translateX(3px);
}

/* 联系方式 */
.footer-contact__row {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 8px;
  margin: 0 0 12px;
  align-items: baseline;
}
.footer-contact__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}
.footer-contact__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--bone);
  word-break: break-word;
}
.footer-contact__value a {
  color: var(--bone);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 242, 78, 0.35);
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}
.footer-contact__value a:hover {
  color: var(--lime);
  border-color: var(--lime);
}
.footer-contact__note {
  margin: 14px 0 0;
  font-size: 12px;
  color: var(--mist);
}

/* 资料条带 Tape Strip */
.footer-strip {
  position: relative;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: clamp(14px, 2vw, 26px);
  padding: 18px 20px;
  border-radius: var(--radius-lg);
  background: linear-gradient(100deg, #175A4C 0%, #10453A 52%, #123A31 100%);
  border: 1px solid rgba(200, 242, 78, 0.20);
  box-shadow: var(--shadow-card);
}

.footer-strip__lead { flex: none; }

.footer-strip__label {
  display: inline-block;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: rgba(200, 242, 78, 0.14);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.footer-strip__list {
  flex: 1 1 340px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  min-width: 0;
}

.footer-strip__item { flex: none; }

.footer-strip__item a {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(244, 241, 233, 0.24);
  color: var(--bone);
  font-size: 13px;
  text-decoration: none;
  transition: border-color 200ms var(--ease), color 200ms var(--ease), background 200ms var(--ease);
}
.footer-strip__item a:hover {
  border-color: var(--lime);
  color: var(--lime);
  background: rgba(200, 242, 78, 0.08);
}
.footer-strip__item span {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.footer-strip__cta {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: none;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  background: var(--orange);
  color: #180A03;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: background 200ms var(--ease), transform 220ms var(--ease);
}
.footer-strip__cta:hover {
  background: var(--amber);
  color: #180A03;
  transform: translateY(-2px);
}

/* 版权底栏 */
.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  margin-top: clamp(28px, 4vw, 44px);
  padding: 20px 0 30px;
  border-top: 1px solid rgba(46, 74, 66, 0.85);
  font-size: 12px;
  color: var(--mist);
}
.footer-base__copy {
  margin: 0;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}
.footer-base__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.footer-base__links a {
  color: var(--mist);
  text-decoration: none;
  transition: color 200ms var(--ease);
}
.footer-base__links a:hover { color: var(--lime-soft); }

/* ===========================================================
   基础组件
   =========================================================== */

/* 面包屑 */
.breadcrumb {
  margin: 0 0 18px;
  font-size: 12px;
  color: var(--mist);
}
.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: rgba(154, 167, 159, 0.55);
}
.breadcrumb__link {
  color: var(--mist);
  text-decoration: none;
  transition: color 180ms var(--ease);
}
.breadcrumb__link:hover { color: var(--lime-soft); }
.breadcrumb__item[aria-current="page"] { color: var(--bone); }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 28px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.01em;
  text-decoration: none;
  cursor: pointer;
  transition: background 220ms var(--ease), color 220ms var(--ease),
              border-color 220ms var(--ease), transform 220ms var(--ease);
}
.btn--lime {
  background: var(--lime);
  color: var(--ink);
}
.btn--lime:hover {
  background: var(--lime-soft);
  color: var(--ink);
  transform: translateY(-2px);
}
.btn--orange {
  background: var(--orange);
  color: #180A03;
}
.btn--orange:hover {
  background: var(--amber);
  color: #180A03;
  transform: translateY(-2px);
}
.btn--ghost {
  background: transparent;
  border-color: rgba(244, 241, 233, 0.34);
  color: var(--bone);
}
.btn--ghost:hover {
  border-color: var(--lime);
  color: var(--lime);
  background: rgba(200, 242, 78, 0.08);
}
.btn--sm {
  padding: 9px 18px;
  font-size: 13px;
}

/* 区块小标签 */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 13px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(200, 242, 78, 0.36);
  background: rgba(200, 242, 78, 0.09);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

/* 深色卡片底座 */
.panel {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px);
  border-radius: var(--radius-lg);
  background: linear-gradient(158deg, rgba(23, 90, 76, 0.72) 0%, rgba(13, 20, 17, 0.92) 100%);
  border: 1px solid rgba(46, 74, 66, 0.95);
  box-shadow: var(--shadow-card);
  transition: transform 260ms var(--ease), border-color 260ms var(--ease);
}
.panel:hover {
  transform: translateY(-4px);
  border-color: rgba(200, 242, 78, 0.42);
}

/* 图片容器（页面阶段放置图片占位） */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid rgba(46, 74, 66, 0.95);
  background-color: var(--green-deep);
  background-image:
    radial-gradient(120% 85% at 20% 0%, rgba(200, 242, 78, 0.16), transparent 60%),
    radial-gradient(90% 70% at 100% 100%, rgba(255, 122, 47, 0.16), transparent 62%),
    linear-gradient(160deg, #175A4C 0%, #0D1411 100%);
  isolation: isolate;
}
.media-frame img,
.media-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(to right, rgba(244, 241, 233, 0.05) 1px, transparent 1px);
  background-size: 40px 100%;
  opacity: 0.7;
  mix-blend-mode: overlay;
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-frame__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--mist);
}

/* 滚动显现（由 site.js 写入 data-reveal-state） */
[data-reveal] {
  transition: opacity 520ms var(--ease), transform 520ms var(--ease);
}
[data-reveal-state="pending"] {
  opacity: 0;
  transform: translateY(16px);
}
[data-reveal-state="shown"] {
  opacity: 1;
  transform: none;
}

/* ===========================================================
   响应式
   =========================================================== */
@media (max-width: 1180px) {
  .nav-link { padding: 9px 12px; font-size: 14px; }
  .nav-link__idx { display: none; }
  .nav-shell.is-condensed .nav-link__label { max-width: 9em; opacity: 1; }
}

@media (max-width: 900px) {
  body { padding-bottom: 96px; }

  .shell {
    padding-left: clamp(16px, 4vw, 24px);
    padding-right: clamp(16px, 4vw, 24px);
  }

  /* 品牌轨 → 顶部 48px 条带 */
  .brand-rail {
    inset: 0 0 auto 0;
    width: 100%;
    height: 48px;
    align-items: center;
    justify-content: flex-start;
    padding: 0 16px;
    border-right: 0;
    border-bottom: 1px solid rgba(46, 74, 66, 0.9);
    background: rgba(13, 20, 17, 0.94);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
  }
  .brand-rail__link {
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 10px;
    width: auto;
    padding: 0;
  }
  .brand-rail__dot { width: 7px; height: 7px; }
  .brand-rail__word {
    writing-mode: horizontal-tb;
    text-orientation: mixed;
    font-size: 16px;
    letter-spacing: 0.14em;
  }
  .brand-rail__meta { display: none; }

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

  /* 胶囊导航 → 底部横滑条 */
  .nav-shell {
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 10px;
    padding: 12px 12px calc(12px + env(safe-area-inset-bottom, 0px));
    border-radius: 22px 22px 0 0;
    border-top: 1px solid rgba(46, 74, 66, 0.95);
    background: rgba(12, 59, 50, 0.96);
    -webkit-backdrop-filter: blur(16px) saturate(130%);
    backdrop-filter: blur(16px) saturate(130%);
    box-shadow: 0 -18px 40px -28px rgba(0, 0, 0, 0.95);
    pointer-events: auto;
    transition: transform 340ms var(--ease), opacity 260ms var(--ease), top 320ms var(--ease);
  }
  .nav-shell.is-condensed { top: auto; }

  .nav-shell[data-open="false"] {
    transform: translateY(112%);
    opacity: 0;
    pointer-events: none;
  }
  .nav-shell[data-open="true"] {
    transform: translateY(0);
    opacity: 1;
  }

  .nav-capsule {
    padding: 0;
    border: 0;
    background: transparent;
    box-shadow: none;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .nav-capsule::-webkit-scrollbar { display: none; }

  .nav-capsule__list { gap: 6px; padding-right: 4px; }
  .nav-link {
    padding: 9px 14px;
    font-size: 14px;
    background: rgba(244, 241, 233, 0.05);
    border: 1px solid rgba(46, 74, 66, 0.95);
  }
  .nav-link__idx { display: none; }
  .nav-shell.is-condensed .nav-link__label { max-width: 9em; opacity: 1; }

  .nav-utility {
    justify-content: center;
    padding: 11px 18px;
    font-size: 14px;
  }

  /* 页脚 */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-strip { padding: 16px; border-radius: var(--radius-md); }
  .footer-strip__cta {
    margin-left: 0;
    width: 100%;
    justify-content: center;
  }
  .footer-base {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }
  .footer-contact__row { grid-template-columns: 40px 1fr; }
}

@media (max-width: 560px) {
  .nav-link { padding: 8px 12px; font-size: 13px; }
  .footer-strip__list { flex: 1 1 100%; }
  .footer-strip__item a { padding: 7px 12px; font-size: 12px; }
  .btn { padding: 13px 22px; font-size: 14px; }
}

/* ===========================================================
   动效降级
   =========================================================== */
@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;
  }

  .scroll-progress { transition: none; }

  [data-reveal],
  [data-reveal-state="pending"],
  [data-reveal-state="shown"] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .panel:hover,
  .btn:hover,
  .nav-utility:hover,
  .footer-strip__cta:hover,
  .footer-nav__list a:hover {
    transform: none;
  }
}