/* ==========================================================================
   问鼎娱乐会馆 · /assets/site.css
   共享外壳 + 基础组件（页面特色布局由页面专属 CSS 追加）
   ========================================================================== */

:root {
  --ink: #121615;
  --rock-900: #1C2224;
  --rock-700: #3A4446;
  --lake: #6F9A9B;
  --lake-soft: #A9C3C0;
  --paper: #F3EBDD;
  --paper-white: #FBF7EF;
  --gold: #C9A24B;
  --gold-soft: #E4C77E;
  --cinnabar: #B3402F;

  --shell: 1240px;
  --gutter: clamp(18px, 4.2vw, 56px);

  --hair: 1px solid rgba(58, 68, 70, 0.16);
  --hair-strong: 1px solid rgba(58, 68, 70, 0.36);
  --hair-gold: 1px solid rgba(201, 162, 75, 0.42);
  --hair-light: 1px solid rgba(243, 235, 221, 0.18);

  --plate-shadow: 0 1px 0 rgba(255, 255, 255, 0.65) inset,
    0 22px 48px -42px rgba(18, 22, 21, 0.9);

  --font-display: "Songti SC", "Source Han Serif SC", "Noto Serif SC",
    "STZhongsong", "SimSun", serif;
  --font-body: -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans SC",
    "Microsoft YaHei", sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace,
    SFMono-Regular, Menlo, Consolas, monospace;
}

/* ---------- reset ---------- */
*,
*::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, figure, blockquote, dl, dd, address { margin: 0; }

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

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

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

button { font: inherit; color: inherit; }

/* ---------- 中文排版基底 ---------- */
body {
  background-color: var(--paper-white);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.75;
  letter-spacing: 0.012em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.012em;
  color: var(--ink);
}

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

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

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

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 120;
  padding: 10px 18px;
  background: var(--gold);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  border: 1px solid var(--gold-soft);
  border-radius: 2px;
  transform: translateY(-160%);
  transition: transform 0.18s ease;
}
.skip-link:focus-visible {
  transform: translateY(0);
  outline-offset: 2px;
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

/* ---------- 顶部阅读进度（鎏金灯光路径） ---------- */
.progress {
  position: fixed;
  inset-inline: 0;
  top: 0;
  height: 3px;
  z-index: 110;
  background: rgba(243, 235, 221, 0.1);
  pointer-events: none;
}
.progress__bar {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--gold), var(--gold-soft) 62%, var(--cinnabar));
  transition: transform 0.1s linear;
}

/* ==========================================================================
   头部：礼宾层 / 指引条 / 主栏目带
   ========================================================================== */
.site-header {
  position: relative;
  z-index: 60;
}

/* --- 礼宾层 --- */
.masthead {
  background: var(--rock-900);
  color: var(--paper);
  border-bottom: 1px solid rgba(201, 162, 75, 0.32);
}
.masthead__inner {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 40px);
  padding-block: clamp(12px, 1.5vw, 18px);
}

.brand { min-width: 0; }
.brand__link {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}
.brand__seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(201, 162, 75, 0.65);
  color: var(--gold-soft);
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 900;
  line-height: 1;
  background: radial-gradient(circle at 28% 18%, rgba(201, 162, 75, 0.22), transparent 72%);
  transition: border-color 0.2s ease, background 0.2s ease;
}
.brand__link:hover .brand__seal,
.brand__link:focus-visible .brand__seal {
  border-color: var(--gold-soft);
  background: radial-gradient(circle at 28% 18%, rgba(228, 199, 126, 0.34), transparent 74%);
}
.brand__text {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}
.brand__name {
  font-family: var(--font-display);
  font-size: clamp(17px, 1.7vw, 20px);
  font-weight: 900;
  letter-spacing: 0.1em;
  color: var(--paper-white);
  white-space: nowrap;
}
.brand__line {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.26em;
  color: var(--lake-soft);
  white-space: nowrap;
}

.masthead__meta {
  margin-inline-start: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: rgba(243, 235, 221, 0.62);
  white-space: nowrap;
}
.masthead__meta .num { color: var(--gold-soft); }

.masthead__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

/* --- 通用按钮 --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.2;
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease,
    color 0.18s ease, transform 0.18s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--gold {
  background: var(--gold);
  border-color: var(--gold-soft);
  color: #1A1A16;
}
.btn--gold:hover { background: var(--gold-soft); }

.btn--ghost {
  background: transparent;
  border-color: rgba(201, 162, 75, 0.5);
  color: var(--paper);
}
.btn--ghost:hover { border-color: var(--gold-soft); color: var(--gold-soft); }

.btn--ink {
  background: var(--rock-900);
  border-color: var(--rock-700);
  color: var(--paper-white);
}
.btn--ink:hover { background: var(--rock-700); }

.btn--cinnabar {
  background: var(--cinnabar);
  border-color: var(--cinnabar);
  color: var(--paper-white);
}
.btn--cinnabar:hover { background: #9C3626; border-color: #9C3626; }

.btn--sm {
  padding: 9px 16px;
  font-size: 13px;
  letter-spacing: 0.08em;
}

/* --- 移动菜单按钮 --- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 14px;
  background: transparent;
  border: 1px solid rgba(201, 162, 75, 0.5);
  border-radius: 2px;
  color: var(--paper);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  cursor: pointer;
  transition: border-color 0.18s ease, color 0.18s ease;
}
.nav-toggle:hover { border-color: var(--gold-soft); color: var(--gold-soft); }
.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 10px;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: currentColor;
  transition: transform 0.2s ease;
}
.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { bottom: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(4px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-5px) rotate(-45deg); }
.nav-toggle__label { line-height: 1; }

/* --- 娱乐指引条 --- */
.guide-rail {
  background: var(--paper-white);
  border-bottom: var(--hair);
}
.guide-rail__inner {
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 26px);
  padding-block: 9px;
}
.guide-rail__label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.18em;
  color: var(--rock-900);
  white-space: nowrap;
}
.guide-rail__label::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--cinnabar);
  transform: rotate(45deg);
}
.guide-rail__list {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
  padding-block: 2px;
}
.guide-rail__list li { flex: 0 0 auto; }
.guide-rail__list a {
  display: inline-block;
  padding: 4px 12px;
  border: 1px solid rgba(58, 68, 70, 0.18);
  border-radius: 2px;
  font-size: 13px;
  color: var(--rock-700);
  white-space: nowrap;
  transition: border-color 0.16s ease, background 0.16s ease, color 0.16s ease;
}
.guide-rail__list a:hover {
  border-color: var(--gold);
  background: rgba(201, 162, 75, 0.14);
  color: var(--rock-900);
}
.guide-rail__note {
  margin-inline-start: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--lake);
  white-space: nowrap;
}

/* --- 主栏目带 --- */
.nav-band {
  background: var(--paper);
  border-bottom: var(--hair-strong);
  box-shadow: 0 1px 0 rgba(251, 247, 239, 0.7) inset;
}
.nav-band__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.primary-nav { min-width: 0; }
.nav-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: clamp(12px, 2.4vw, 34px);
}
.nav-list__item { flex: 0 0 auto; }
.nav-link {
  position: relative;
  display: inline-block;
  padding: 18px 2px 16px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--rock-900);
  transition: color 0.18s ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 10px;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 0.22s ease;
}
.nav-link:hover { color: var(--ink); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link[aria-current="page"] { color: var(--cinnabar); }
.nav-link[aria-current="page"]::after {
  background: var(--cinnabar);
  transform: scaleX(1);
}
.nav-band__hint {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: rgba(58, 68, 70, 0.72);
  white-space: nowrap;
}

/* ==========================================================================
   页脚：深墨档案层
   ========================================================================== */
.site-footer {
  background: var(--rock-900);
  color: rgba(243, 235, 221, 0.78);
  border-top: 2px solid var(--gold);
}
.footer__top {
  display: grid;
  grid-template-columns: minmax(200px, 0.92fr) minmax(0, 1.9fr) minmax(210px, 0.86fr);
  gap: clamp(28px, 4vw, 64px);
  padding-block: clamp(44px, 6vw, 76px) clamp(36px, 5vw, 60px);
}
.footer__seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 16px;
  border: 1px solid rgba(201, 162, 75, 0.6);
  color: var(--gold-soft);
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 900;
  line-height: 1;
  background: radial-gradient(circle at 30% 20%, rgba(201, 162, 75, 0.18), transparent 70%);
}
.footer__name {
  font-family: var(--font-display);
  font-size: clamp(20px, 2vw, 23px);
  font-weight: 900;
  letter-spacing: 0.07em;
  color: var(--paper-white);
}
.footer__desc {
  margin-top: 12px;
  max-width: 26em;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(243, 235, 221, 0.66);
}
.footer__cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 2.4vw, 36px);
}
.footer__col { min-width: 0; }
.footer__col-title {
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--gold-soft);
}
.footer__links {
  display: grid;
  gap: 10px;
  font-size: 14px;
}
.footer__links a {
  display: inline-block;
  color: rgba(243, 235, 221, 0.76);
  border-bottom: 1px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}
.footer__links a:hover {
  color: var(--gold-soft);
  border-bottom-color: rgba(201, 162, 75, 0.6);
}
.footer__contact { min-width: 0; }
.footer__contact p {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  line-height: 1.8;
  margin-top: 6px;
  color: rgba(243, 235, 221, 0.72);
  overflow-wrap: anywhere;
}
.footer__address {
  font-style: normal;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(243, 235, 221, 0.78);
  padding-bottom: 10px;
  border-bottom: var(--hair-light);
}
.footer__legal {
  background: var(--ink);
  border-top: 1px solid rgba(201, 162, 75, 0.22);
}
.footer__legal-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-block: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(243, 235, 221, 0.56);
}
.footer__legal-inner .num { color: rgba(228, 199, 126, 0.82); }
.footer__legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}
.footer__legal-links a { transition: color 0.16s ease; }
.footer__legal-links a:hover { color: var(--gold-soft); }

/* ==========================================================================
   页面阶段可复用组件
   ========================================================================== */
.section { padding-block: clamp(56px, 8vw, 128px); }
.section--paper { background: var(--paper); }
.section--ink {
  background: var(--rock-900);
  color: rgba(243, 235, 221, 0.84);
}
.section--ink h1,
.section--ink h2,
.section--ink h3 { color: var(--paper-white); }
.section--ink .prose { color: rgba(243, 235, 221, 0.8); }
.section--ink .eyebrow { color: var(--lake-soft); }
.section--lake { background: rgba(111, 154, 155, 0.16); }

.heading-xl {
  font-size: clamp(56px, 9vw, 148px);
  line-height: 0.94;
  letter-spacing: -0.02em;
}
.heading-lg {
  font-size: clamp(36px, 5vw, 72px);
  line-height: 1.04;
}
.heading-md {
  font-size: clamp(24px, 2.4vw, 32px);
  line-height: 1.26;
}

.lede {
  max-width: 32em;
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.8;
  color: var(--rock-700);
}
.prose {
  max-width: 34em;
  line-height: 1.85;
  color: rgba(18, 22, 21, 0.86);
}
.prose p + p { margin-top: 1em; }
.prose strong { font-weight: 700; color: var(--ink); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--rock-700);
}
.eyebrow::before {
  content: "";
  display: block;
  width: 34px;
  height: 1px;
  background: var(--gold);
}

.plate {
  position: relative;
  padding: clamp(20px, 3vw, 32px);
  background: var(--paper-white);
  border: var(--hair);
  box-shadow: var(--plate-shadow);
}
.plate::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(201, 162, 75, 0.22);
  pointer-events: none;
}
.plate--dark {
  background: var(--rock-900);
  border-color: rgba(201, 162, 75, 0.3);
  color: rgba(243, 235, 221, 0.86);
  box-shadow: none;
}
.plate--dark h2,
.plate--dark h3 { color: var(--paper-white); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  line-height: 1.6;
  border: 1px solid currentColor;
  border-radius: 2px;
  color: var(--rock-700);
}
.tag--gold { color: #8A6A1F; background: rgba(201, 162, 75, 0.14); }
.tag--lake { color: #2F5354; background: rgba(111, 154, 155, 0.18); }
.tag--cinnabar { color: var(--cinnabar); background: rgba(179, 64, 47, 0.1); }

.breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--rock-700);
}
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}
.breadcrumb li { display: inline-flex; align-items: center; }
.breadcrumb li + li::before {
  content: "/";
  margin-right: 10px;
  color: var(--lake);
}
.breadcrumb a { transition: color 0.16s ease; }
.breadcrumb a:hover { color: var(--cinnabar); }

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 2px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--rock-900);
  border-bottom: 1px solid rgba(201, 162, 75, 0.5);
  transition: color 0.18s ease, border-color 0.18s ease;
}
.arrow-link::after {
  content: "→";
  transition: transform 0.18s ease;
}
.arrow-link:hover { color: var(--cinnabar); border-color: var(--cinnabar); }
.arrow-link:hover::after { transform: translateX(4px); }

.divider {
  height: 1px;
  border: 0;
  margin-block: clamp(28px, 4vw, 56px);
  background: linear-gradient(90deg, var(--gold) 0 68px, rgba(58, 68, 70, 0.22) 68px 100%);
}

.grid { display: grid; gap: clamp(18px, 2.6vw, 32px); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.triad {
  display: grid;
  grid-template-columns: minmax(170px, 0.62fr) minmax(0, 1.9fr) minmax(200px, 0.78fr);
  gap: clamp(20px, 3vw, 44px);
  align-items: start;
}

.kv { border-top: var(--hair-strong); }
.kv__row {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 14px 4px;
  border-bottom: var(--hair);
}
.kv__key {
  font-size: 15px;
  color: var(--rock-700);
}
.kv__val {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-align: right;
}

/* 图像容器基础（页面阶段放入 <img class="media-frame__img">） */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--rock-700);
  border: var(--hair-gold);
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  box-shadow: inset 0 0 0 1px rgba(251, 247, 239, 0.12);
  background: linear-gradient(160deg, rgba(28, 34, 36, 0.04) 20%, rgba(28, 34, 36, 0.46));
}
.media-frame__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.78) contrast(1.03);
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--rock-700);
}

/* 可展开条目 */
.accordion {
  border-bottom: var(--hair-strong);
}
.accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  padding: 20px 4px;
  background: none;
  border: 0;
  text-align: left;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0.01em;
  color: var(--ink);
  cursor: pointer;
  transition: color 0.18s ease;
}
.accordion__trigger:hover { color: var(--cinnabar); }
.accordion__trigger::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 400;
  color: var(--gold);
  transition: transform 0.2s ease, color 0.2s ease;
}
.accordion[data-open="true"] .accordion__trigger::after {
  transform: rotate(45deg);
  color: var(--cinnabar);
}
.accordion__panel {
  display: grid;
  grid-template-rows: 0fr;
  visibility: hidden;
  transition: grid-template-rows 0.24s ease, visibility 0.24s ease;
}
.accordion__panel > div {
  overflow: hidden;
  padding-inline: 4px;
}
.accordion[data-open="true"] .accordion__panel {
  grid-template-rows: 1fr;
  visibility: visible;
}
.accordion[data-open="true"] .accordion__panel > div { padding-bottom: 22px; }

/* 粘性工具索引项 */
.spy-link {
  display: block;
  padding: 10px 0 10px 14px;
  border-left: 2px solid transparent;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--rock-700);
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}
.spy-link:hover { color: var(--ink); border-left-color: rgba(201, 162, 75, 0.55); }
.spy-link.is-active {
  color: var(--cinnabar);
  border-left-color: var(--gold);
  background: linear-gradient(90deg, rgba(201, 162, 75, 0.14), transparent 92%);
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1080px) {
  .footer__top {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.6fr);
  }
  .footer__contact { grid-column: 1 / -1; }
}

@media (max-width: 1000px) {
  .triad { grid-template-columns: 1fr; }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .masthead__meta { display: none; }
  .nav-toggle { display: inline-flex; }
  .masthead__actions { margin-inline-start: auto; }

  .guide-rail__note { display: none; }
  .guide-rail__inner { flex-wrap: nowrap; }

  .nav-band__inner { display: block; padding-block: 0; }
  .primary-nav { width: 100%; }
  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-block: 4px 14px;
    border-top: var(--hair);
  }
  .primary-nav[data-open="true"] .nav-list { display: flex; }
  .nav-list__item { width: 100%; }
  .nav-link {
    display: block;
    width: 100%;
    padding: 14px 2px;
    border-bottom: var(--hair);
  }
  .nav-link::after { display: none; }
  .nav-link[aria-current="page"] {
    color: var(--cinnabar);
    background: linear-gradient(90deg, rgba(179, 64, 47, 0.08), transparent 88%);
  }
  .nav-band__hint { display: none; }
}

@media (max-width: 760px) {
  body { font-size: 15.5px; }
  .footer__top { grid-template-columns: 1fr; }
  .footer__cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__contact { grid-column: auto; }
  .grid--2,
  .grid--3 { grid-template-columns: 1fr; }
  .kv__row { grid-template-columns: 1fr; gap: 4px; }
  .kv__val { text-align: left; }
  .media-frame__caption { font-size: 11px; }
}

@media (max-width: 480px) {
  .brand__line { display: none; }
  .footer__cols { grid-template-columns: 1fr; }
  .btn--sm { padding: 8px 12px; font-size: 12px; }
}

/* ==========================================================================
   动效偏好与打印
   ========================================================================== */
@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;
  }
  .progress__bar { transition: none; }
}

@media print {
  .progress,
  .nav-toggle,
  .skip-link { display: none !important; }
  .site-footer { background: #fff; color: #000; border-top: 1px solid #000; }
}