/* ==========================================================================
   UNIBET看台 · 共享样式 /assets/site.css
   看台轨 + 命令栏 + 暖纸正文 + 比分节奏
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body,
h1, h2, h3, h4, h5, h6,
p, ul, ol, li, figure, figcaption, blockquote, dl, dd { margin: 0; }

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

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

button { font: inherit; color: inherit; background: none; border: 0; }

a { color: inherit; text-decoration: none; }

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

/* ---------- tokens ---------- */
:root {
  --ink-green: #0E2A24;
  --ink-green-deep: #081C18;
  --paper: #F4EEDF;
  --cement: #C9C4B8;
  --ink: #121716;
  --flame: #FF5A2A;
  --flame-deep: #B8320F;
  --lime: #C7FF3D;
  --moss: #6F8A7C;
  --paper-white: #FFFDF6;
  --cool-gray: #6E7672;

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

  --header-h: 104px;
  --rail-w: 224px;
  --gutter: clamp(16px, 3vw, 40px);
  --maxw: 1320px;

  --radius-sm: 5px;
  --radius-md: 12px;
  --radius-lg: 24px;

  --line: 1px solid rgba(18, 23, 22, 0.14);
  --line-strong: 1px solid rgba(18, 23, 22, 0.28);
  --line-ink: 1px solid rgba(244, 238, 223, 0.18);

  --dur: 0.28s;
  --ease: cubic-bezier(0.22, 0.7, 0.28, 1);
}

/* ---------- base typography ---------- */
body {
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(30px, 4.4vw, 56px); }
h2 { font-size: clamp(24px, 3vw, 38px); }
h3 { font-size: clamp(19px, 2vw, 24px); }
h4 { font-size: clamp(16px, 1.4vw, 18px); letter-spacing: 0; }

p { text-wrap: pretty; }

strong { font-weight: 700; }

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

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

/* ---------- layout primitives ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.container--narrow { max-width: 860px; }

.page-shell {
  display: grid;
  grid-template-columns: var(--rail-w) minmax(0, 1fr);
  gap: clamp(24px, 3vw, 56px);
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.rail { min-width: 0; }

.rail__sticky {
  position: sticky;
  top: calc(var(--header-h) + 20px);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.rail__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--moss);
}

.rail__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  border-left: 2px solid var(--cement);
}

.rail__link {
  display: block;
  padding: 9px 12px 9px 14px;
  margin-left: -2px;
  border-left: 2px solid transparent;
  font-size: 14px;
  color: var(--cool-gray);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.rail__link:hover {
  color: var(--ink);
  background-color: rgba(201, 196, 184, 0.28);
  border-left-color: var(--moss);
}

.rail__link[aria-current] {
  color: var(--ink);
  font-weight: 700;
  border-left-color: var(--flame);
  background-color: rgba(255, 90, 42, 0.08);
}

.section { padding: clamp(40px, 6vw, 88px) 0; }
.section--paper { background-color: var(--paper); }
.section--ink { background-color: var(--ink-green); color: var(--paper); }
.section--cement { background-color: var(--cement); }

.section--ink .section-title,
.section--ink h2,
.section--ink h3 { color: var(--paper); }

.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 32px);
}

.grid--split { grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); }
.grid--thirds { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* ---------- shared text ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--flame-deep);
}

.section--ink .eyebrow { color: var(--lime); }

.section-title {
  font-size: clamp(24px, 3vw, 38px);
  font-weight: 900;
  letter-spacing: -0.025em;
  line-height: 1.12;
}

.lede {
  font-size: clamp(15px, 1.4vw, 18px);
  line-height: 1.75;
  color: rgba(18, 23, 22, 0.78);
  max-width: 62ch;
}

.section--ink .lede { color: rgba(244, 238, 223, 0.78); }

.meta-note {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--cool-gray);
}

.section--ink .meta-note { color: rgba(244, 238, 223, 0.56); }

.prose {
  max-width: 72ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
}

.prose > * + * { margin-top: 1em; }
.prose h2 { margin-top: 1.9em; }
.prose h3 { margin-top: 1.6em; }

.prose ul li {
  position: relative;
  padding-left: 20px;
  margin-top: 0.5em;
}

.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.74em;
  width: 7px;
  height: 7px;
  background-color: var(--flame);
  border-radius: 2px;
}

.prose a {
  color: var(--flame-deep);
  border-bottom: 1px solid currentColor;
}

.prose a:hover { color: var(--flame); }

.section--ink .prose { color: rgba(244, 238, 223, 0.86); }
.section--ink .prose a { color: var(--lime); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.btn:active { transform: translateY(1px); }

.btn--accent {
  background-color: var(--flame);
  color: #1B0C06;
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.22);
}

.btn--accent:hover { background-color: #FF7448; }

.btn--ghost {
  border-color: rgba(244, 238, 223, 0.42);
  color: var(--paper);
}

.btn--ghost:hover {
  border-color: var(--lime);
  color: var(--lime);
  background-color: rgba(199, 255, 61, 0.08);
}

.btn--ink {
  background-color: var(--ink-green);
  color: var(--paper);
}

.btn--ink:hover { background-color: #16453B; }

.btn--lime {
  background-color: var(--lime);
  color: var(--ink-green);
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.18);
}

.btn--lime:hover { background-color: #D8FF6E; }

/* ---------- breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--cool-gray);
}

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

.breadcrumb__item a { color: var(--ink); border-bottom: 1px solid rgba(18, 23, 22, 0.3); }
.breadcrumb__item a:hover { color: var(--flame-deep); border-bottom-color: currentColor; }

.breadcrumb__sep { color: var(--cement); }

/* ---------- cards / data ---------- */
.card {
  position: relative;
  padding: clamp(18px, 2vw, 26px);
  border: var(--line);
  border-radius: var(--radius-md);
  background-color: var(--paper-white);
}

.card--paper { background-color: var(--paper-white); }

.card--ink {
  background-color: var(--ink-green);
  color: var(--paper);
  border-color: rgba(244, 238, 223, 0.16);
}

.data-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-bottom: var(--line);
}

.data-row__label {
  font-size: 13.5px;
  color: var(--cool-gray);
}

.data-row__value {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.card--ink .data-row { border-bottom-color: rgba(244, 238, 223, 0.16); }
.card--ink .data-row__label { color: rgba(244, 238, 223, 0.62); }
.card--ink .data-row__value { color: var(--lime); }

.stat-tile {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  border-left: 3px solid var(--flame);
  background-color: rgba(201, 196, 184, 0.24);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.stat-tile__value {
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--ink);
}

.stat-tile__label {
  font-size: 12.5px;
  color: var(--cool-gray);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--moss);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--ink-green);
  background-color: transparent;
}

.tag--lime {
  background-color: var(--lime);
  border-color: var(--lime);
  color: var(--ink-green);
}

.tag--flame {
  background-color: var(--flame);
  border-color: var(--flame);
  color: #1B0C06;
}

/* ---------- timeline ---------- */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-left: 22px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--flame), var(--moss));
}

.timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  gap: 16px;
  padding: 14px 0;
  border-bottom: var(--line);
}

.timeline__item:last-child { border-bottom: 0; }

.timeline__marker {
  position: absolute;
  left: -22px;
  top: 22px;
  width: 12px;
  height: 12px;
  border-radius: 3px;
  background-color: var(--paper);
  border: 2px solid var(--flame);
}

.timeline__time {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--flame-deep);
}

.timeline__body { font-size: 14.5px; line-height: 1.7; }

/* ---------- figure (页面阶段放图) ---------- */
.figure {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: var(--line);
  background-color: var(--cement);
}

.figure__img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background-color: var(--cement);
  background-image: linear-gradient(140deg, rgba(14, 42, 36, 0.92), rgba(111, 138, 124, 0.55) 55%, rgba(255, 90, 42, 0.4));
}

.figure--wide .figure__img { aspect-ratio: 21 / 9; }
.figure--tall .figure__img { aspect-ratio: 4 / 5; }

.figure__caption {
  display: block;
  padding: 10px 14px;
  background-color: var(--paper-white);
  border-top: var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--cool-gray);
}

/* ==========================================================================
   头部
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background-color: var(--ink-green);
  color: var(--paper);
}

.skip-link {
  position: absolute;
  left: 50%;
  top: 0;
  z-index: 200;
  transform: translate(-50%, -140%);
  padding: 10px 20px;
  background-color: var(--lime);
  color: var(--ink-green);
  font-size: 14px;
  font-weight: 700;
  border-radius: 0 0 10px 10px;
  transition: transform 0.18s var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translate(-50%, 0);
  outline-offset: -3px;
}

/* --- 比分条 --- */
.score-strip {
  display: flex;
  align-items: center;
  gap: 14px;
  height: 36px;
  padding: 0 var(--gutter);
  background-color: var(--ink-green-deep);
  border-bottom: 1px solid rgba(244, 238, 223, 0.1);
  overflow: hidden;
}

.score-strip__label {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--moss);
  text-transform: uppercase;
}

.score-strip__track {
  display: flex;
  align-items: center;
  flex: 1 1 auto;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  scroll-snap-type: x proximity;
}

.score-strip__track::-webkit-scrollbar { display: none; }

.score-item {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 0 14px;
  border-left: 1px solid rgba(244, 238, 223, 0.14);
  font-family: var(--font-mono);
  font-size: 12px;
  white-space: nowrap;
  scroll-snap-align: start;
}

.score-item:first-child { border-left: 0; }

.score-item__meta {
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--moss);
}

.score-item__team { color: rgba(244, 238, 223, 0.84); }

.score-item__score {
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--flame);
}

.score-item__state {
  font-size: 10px;
  letter-spacing: 0.1em;
  color: rgba(244, 238, 223, 0.5);
}

.score-item__state--live {
  color: var(--lime);
  background-color: rgba(199, 255, 61, 0.12);
  padding: 1px 6px;
  border-radius: 3px;
}

/* --- 命令栏 --- */
.command-bar {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 26px);
  padding: 10px var(--gutter);
  background-color: var(--ink-green);
  border-bottom: 1px solid rgba(244, 238, 223, 0.14);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  padding: 2px;
  border-radius: var(--radius-sm);
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  background-color: var(--flame);
  color: #1B0C06;
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  line-height: 1;
  border-radius: 10px 10px 10px 2px;
  box-shadow: 4px 4px 0 rgba(199, 255, 61, 0.3);
  transition: box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.brand:hover .brand__mark {
  box-shadow: 2px 2px 0 rgba(199, 255, 61, 0.55);
  transform: translate(1px, 1px);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__name {
  font-size: 16px;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.brand__tagline {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--moss);
}

/* --- 导航 --- */
.site-nav {
  flex: 1 1 auto;
  min-width: 0;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.site-nav__list::-webkit-scrollbar { display: none; }

.site-nav__item { flex: 0 0 auto; }

.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 44px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 500;
  color: rgba(244, 238, 223, 0.76);
  white-space: nowrap;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.site-nav__link:hover {
  color: var(--paper);
  background-color: rgba(244, 238, 223, 0.09);
}

.site-nav__index {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--moss);
  transition: color var(--dur) var(--ease);
}

.site-nav__link[aria-current="page"] {
  background-color: var(--lime);
  color: var(--ink-green);
  font-weight: 700;
}

.site-nav__link[aria-current="page"] .site-nav__index {
  color: rgba(14, 42, 36, 0.62);
}

/* --- 状态标记 --- */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  padding: 5px 12px;
  border: 1px solid rgba(199, 255, 61, 0.42);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--lime);
  white-space: nowrap;
}

.status-pill--strip {
  padding: 3px 10px;
  font-size: 10.5px;
}

.pulse-dot {
  width: 7px;
  height: 7px;
  flex-shrink: 0;
  border-radius: 50%;
  background-color: var(--lime);
  box-shadow: 0 0 0 0 rgba(199, 255, 61, 0.55);
  animation: pulse-dot 2.6s var(--ease) infinite;
}

@keyframes pulse-dot {
  0%   { box-shadow: 0 0 0 0 rgba(199, 255, 61, 0.55); }
  70%  { box-shadow: 0 0 0 8px rgba(199, 255, 61, 0); }
  100% { box-shadow: 0 0 0 0 rgba(199, 255, 61, 0); }
}

/* --- CTA --- */
.command-bar__cta {
  flex-shrink: 0;
  min-height: 42px;
  padding: 0 18px;
  font-size: 13.5px;
}

/* --- 移动导航按钮 --- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  min-width: 44px;
  padding: 8px 12px;
  border: 1px solid rgba(244, 238, 223, 0.32);
  border-radius: 999px;
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  cursor: pointer;
}

.nav-toggle:hover { border-color: var(--lime); color: var(--lime); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background-color: currentColor;
  border-radius: 2px;
  transition: background-color var(--dur) var(--ease);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background-color: currentColor;
  border-radius: 2px;
  transition: transform var(--dur) var(--ease), top var(--dur) var(--ease);
}

.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background-color: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { top: 0; transform: rotate(-45deg); }

.nav-toggle__label { line-height: 1; }

/* --- 阅读进度 --- */
.progress-bar {
  height: 3px;
  background-color: rgba(244, 238, 223, 0.12);
}

.progress-bar__fill {
  display: block;
  width: 0;
  height: 100%;
  background-image: linear-gradient(90deg, var(--flame), var(--lime));
  transition: width 0.12s linear;
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer {
  position: relative;
  background-color: var(--ink-green-deep);
  color: var(--paper);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  display: block;
  height: 6px;
  background-image: repeating-linear-gradient(90deg, var(--flame) 0 22px, transparent 22px 46px);
  opacity: 0.85;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(240px, 1.25fr) minmax(220px, 1fr) minmax(260px, 1.05fr);
  gap: clamp(24px, 4vw, 56px);
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(36px, 5vw, 64px) var(--gutter) clamp(28px, 4vw, 48px);
}

.site-footer__brand { min-width: 0; }

.site-footer__wordmark {
  font-size: clamp(17px, 1.8vw, 21px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.4;
  color: var(--paper);
}

.site-footer__meta {
  margin-top: 12px;
  max-width: 34ch;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(244, 238, 223, 0.6);
}

.footer-nav {
  display: flex;
  gap: clamp(24px, 3vw, 44px);
  min-width: 0;
}

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

.footer-nav__title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--lime);
}

.footer-nav__list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-nav__link {
  display: inline-block;
  font-size: 14px;
  color: rgba(244, 238, 223, 0.78);
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.footer-nav__link:hover {
  color: var(--paper);
  border-bottom-color: var(--flame);
}

.site-footer__contact { min-width: 0; }

.site-footer__contact-line {
  font-size: 13px;
  line-height: 1.85;
  color: rgba(244, 238, 223, 0.72);
  word-break: break-word;
}

.site-footer__contact-line + .site-footer__contact-line { margin-top: 6px; }

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 16px var(--gutter) 22px;
  border-top: 1px solid rgba(244, 238, 223, 0.16);
}

.site-footer__legal-line {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: rgba(244, 238, 223, 0.55);
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1180px) {
  .site-nav__link { padding: 8px 9px; font-size: 13px; }
  .site-nav__index { display: none; }
}

@media (max-width: 1080px) {
  :root { --header-h: 148px; }

  .nav-toggle { display: inline-flex; margin-left: auto; }

  .command-bar { flex-wrap: wrap; row-gap: 8px; }

  .brand { order: 1; }
  .nav-toggle { order: 2; }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    order: 5;
    flex: 1 0 100%;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    padding: 10px calc(var(--gutter) - 4px) 18px;
    background-color: var(--ink-green);
    border-bottom: 1px solid rgba(244, 238, 223, 0.2);
    box-shadow: 0 24px 40px rgba(8, 28, 24, 0.45);
  }

  .site-nav[data-open] { display: block; }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    overflow: visible;
  }

  .site-nav__link {
    width: 100%;
    padding: 12px 14px;
    font-size: 15px;
    border-radius: var(--radius-sm);
  }

  .site-nav__index { display: inline; font-size: 11px; }

  .site-nav__link[aria-current="page"] { border-radius: var(--radius-sm); }

  .command-bar__cta { order: 3; margin-left: auto; }

  .page-shell { grid-template-columns: minmax(0, 1fr); }

  .rail { order: -1; }

  .rail__sticky {
    position: static;
    padding: 12px 0;
    border-bottom: var(--line-strong);
  }

  .rail__list {
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
    border-left: 0;
    border-bottom: 2px solid var(--cement);
    scrollbar-width: none;
  }

  .rail__list::-webkit-scrollbar { display: none; }

  .rail__link {
    white-space: nowrap;
    margin-left: 0;
    border-left: 0;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    padding: 9px 14px;
  }

  .rail__link:hover { border-left-color: transparent; border-bottom-color: var(--moss); }
  .rail__link[aria-current] { border-left-color: transparent; border-bottom-color: var(--flame); }

  .grid--split,
  .grid--thirds { grid-template-columns: minmax(0, 1fr); }

  .site-footer__inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

  .site-footer__meta { max-width: 48ch; }
}

@media (max-width: 760px) {
  :root { --header-h: 152px; }

  .score-strip { height: 34px; gap: 10px; }
  .score-strip__label { display: none; }
  .status-pill--strip { display: none; }

  .brand__mark { width: 34px; height: 34px; font-size: 17px; }
  .brand__name { font-size: 15px; }
  .brand__tagline { font-size: 9px; letter-spacing: 0.12em; }

  .command-bar__cta { padding: 0 14px; font-size: 12.5px; }

  .footer-nav { flex-direction: column; gap: 22px; }

  .site-footer__legal { flex-direction: column; align-items: flex-start; }

  .timeline__item { grid-template-columns: minmax(0, 1fr); gap: 4px; }

  .stat-tile__value { font-size: 22px; }
}

@media (max-width: 480px) {
  .nav-toggle__label { display: none; }
  .nav-toggle { padding: 8px 10px; }

  .score-item { padding: 0 10px; font-size: 11px; }

  .brand { gap: 9px; }
}

/* ==========================================================================
   可访问性：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;
  }

  .pulse-dot {
    animation: none;
    box-shadow: 0 0 0 3px rgba(199, 255, 61, 0.22);
  }

  .progress-bar__fill { transition: none; }
}