/* ===== 博王品牌站 · 共享样式 /assets/site.css ===== */

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

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

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

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

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

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

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

/* ---- CSS 变量 ---- */
:root {
  --c-porch: #F6EFE3;
  --c-wood: #6B4A2F;
  --c-wood-shadow: #3B2A1C;
  --c-bookmark: #D2542A;
  --c-light: #F2B75C;
  --c-ink-green: #1F4A3D;
  --c-paper: #FFFBF4;
  --c-grain: #E5D6C0;
  --c-gridline: #8C9384;
  --c-ink: #241B14;

  --font-head: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", "SFMono-Regular", Consolas, "Courier New", monospace;

  --fs-hero: clamp(2.5rem, 6vw, 4rem);
  --fs-h2: clamp(1.75rem, 3.4vw, 2.125rem);
  --fs-h3: clamp(1.25rem, 2vw, 1.375rem);
  --fs-body: clamp(1rem, 0.6vw + 0.9rem, 1.0625rem);
  --fs-mono: 0.8125rem;

  --lh-prose: 1.75;
  --measure: 38ch;

  --grid-step: 24px;
  --radius-plate: 2px;
  --radius-pill: 999px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 72px;

  --container-max: 1200px;
  --header-h: 72px;

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

/* ---- 中文排版基准 ---- */
body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-prose);
  color: var(--c-ink);
  background-color: var(--c-porch);
  background-image:
    linear-gradient(to right, rgba(140, 147, 132, 0.16) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(140, 147, 132, 0.16) 1px, transparent 1px);
  background-size: var(--grid-step) var(--grid-step);
  min-height: 100vh;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.3;
  color: var(--c-wood);
}

h1 { font-size: var(--fs-hero); font-weight: 700; }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); color: var(--c-wood-shadow); }

p { line-height: var(--lh-prose); }

strong { font-weight: 600; color: var(--c-wood-shadow); }

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

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

/* ---- 布局容器与网格 ---- */
.bw-container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.bw-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-5);
}

.bw-span-2 { grid-column: span 2; }
.bw-span-3 { grid-column: span 3; }
.bw-span-4 { grid-column: span 4; }
.bw-span-6 { grid-column: span 6; }
.bw-span-8 { grid-column: span 8; }
.bw-span-10 { grid-column: span 10; }
.bw-span-12 { grid-column: span 12; }

.surface-grid { position: relative; }

.surface-grid::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(140, 147, 132, 0.12) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(140, 147, 132, 0.12) 1px, transparent 1px);
  background-size: var(--grid-step) var(--grid-step);
  z-index: 0;
}

.surface-grid > * { position: relative; z-index: 1; }

/* ---- 索引栏 ---- */
.bw-index-rail {
  border-right: 1px solid rgba(140, 147, 132, 0.45);
  padding-right: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  color: var(--c-gridline);
  line-height: 1.9;
}

.bw-index-rail__track { display: block; }

.bw-index-rail__title {
  display: block;
  font-size: var(--fs-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-wood);
  margin-bottom: var(--space-3);
}

.dial-index {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.1em;
  color: var(--c-bookmark);
  white-space: nowrap;
}

/* ---- 通用按钮 ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: 10px 20px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.2;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  transition: background-color 180ms var(--ease-out), color 180ms var(--ease-out),
    border-color 180ms var(--ease-out), transform 180ms var(--ease-out);
}

.btn--primary {
  background-color: var(--c-bookmark);
  color: var(--c-paper);
  border-color: var(--c-bookmark);
}

.btn--primary:hover { background-color: #B8451F; border-color: #B8451F; }

.btn--ghost {
  background-color: transparent;
  color: var(--c-wood);
  border-color: rgba(107, 74, 47, 0.5);
}

.btn--ghost:hover { border-color: var(--c-light); background-color: rgba(242, 183, 92, 0.14); }

.btn--mono { font-family: var(--font-mono); font-size: var(--fs-mono); letter-spacing: 0.08em; }

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

/* ---- 头部 ---- */
.skip-link {
  position: absolute;
  left: var(--space-5);
  top: -80px;
  z-index: 200;
  padding: 10px 18px;
  background-color: var(--c-bookmark);
  color: var(--c-paper);
  border-radius: var(--radius-pill);
  font-size: 0.9375rem;
  transition: top 160ms var(--ease-out);
}

.skip-link:focus { top: var(--space-4); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: var(--space-4) 0;
  transition: padding 220ms var(--ease-out);
}

.site-header[data-scrolled] { padding: var(--space-2) 0; }

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  min-height: 56px;
  padding: 8px 12px 8px 14px;
  background-color: rgba(255, 251, 244, 0.94);
  border: 1px solid rgba(107, 74, 47, 0.35);
  border-radius: var(--radius-pill);
  box-shadow: 0 6px 20px rgba(59, 42, 28, 0.08);
  transition: min-height 220ms var(--ease-out), background-color 220ms var(--ease-out);
}

.site-header[data-scrolled] .site-header__inner {
  min-height: 48px;
  background-color: rgba(255, 251, 244, 0.98);
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 44px;
  padding: 4px 10px 4px 4px;
  flex: 0 0 auto;
}

.brand__mark {
  position: relative;
  display: block;
  width: 34px;
  height: 44px;
  background-color: var(--c-wood);
  border-radius: var(--radius-plate);
  overflow: hidden;
  flex: 0 0 auto;
}

.brand__mark-door {
  position: absolute;
  inset: 6px 6px 0 0;
  background-color: var(--c-wood-shadow);
}

.brand__mark-light {
  position: absolute;
  top: 6px;
  bottom: 0;
  right: 0;
  width: 6px;
  background-color: var(--c-light);
}

.brand__name {
  font-family: var(--font-head);
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--c-wood);
}

.brand__plate {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  color: var(--c-gridline);
}

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

.nav-capsule__list {
  display: flex;
  align-items: center;
  gap: 2px;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 2px;
}

.nav-capsule__list::-webkit-scrollbar { display: none; }

.nav-capsule__link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 14px;
  white-space: nowrap;
  font-size: 0.9375rem;
  color: var(--c-wood-shadow);
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  transition: background-color 160ms var(--ease-out), border-color 160ms var(--ease-out),
    color 160ms var(--ease-out);
}

.nav-capsule__link:hover {
  background-color: rgba(242, 183, 92, 0.2);
  border-color: var(--c-light);
}

.nav-capsule__link[aria-current="page"] {
  color: var(--c-bookmark);
  border-color: var(--c-bookmark);
  background-color: rgba(210, 84, 42, 0.07);
  font-weight: 500;
}

/* 书签 CTA */
.bookmark-cta { position: relative; flex: 0 0 auto; }

.bookmark-cta__btn { white-space: nowrap; }

.bookmark-cta__tip {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: 216px;
  padding: var(--space-3) var(--space-4);
  background-color: var(--c-paper);
  border: 1px solid rgba(107, 74, 47, 0.35);
  border-radius: 8px;
  box-shadow: 0 10px 26px rgba(59, 42, 28, 0.16);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 180ms var(--ease-out), transform 180ms var(--ease-out), visibility 180ms;
}

.bookmark-cta:hover .bookmark-cta__tip,
.bookmark-cta:focus-within .bookmark-cta__tip {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.bookmark-cta__tip::before {
  content: "";
  position: absolute;
  top: -5px;
  right: 24px;
  width: 10px;
  height: 10px;
  background-color: var(--c-paper);
  border-left: 1px solid rgba(107, 74, 47, 0.35);
  border-top: 1px solid rgba(107, 74, 47, 0.35);
  transform: rotate(45deg);
}

.bookmark-cta__steps {
  margin-top: var(--space-2);
  font-size: 0.875rem;
  color: var(--c-ink);
  line-height: 1.7;
  counter-reset: step;
}

.bookmark-cta__steps li {
  counter-increment: step;
  padding-left: 22px;
  position: relative;
}

.bookmark-cta__steps li::before {
  content: counter(step) ".";
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  color: var(--c-ink-green);
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-2);
  min-height: 44px;
  min-width: 44px;
  padding: 8px 14px;
  border: 1px solid rgba(107, 74, 47, 0.45);
  border-radius: var(--radius-pill);
  color: var(--c-wood);
  margin-left: auto;
  flex: 0 0 auto;
}

.nav-toggle__bar {
  display: block;
  width: 16px;
  height: 2px;
  background-color: var(--c-wood);
  transition: transform 200ms var(--ease-out), opacity 200ms var(--ease-out);
}

.nav-toggle__label { font-size: 0.875rem; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(4px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-4px) rotate(-45deg); }

.nav-toggle__bar + .nav-toggle__bar { margin-top: 0; }

/* ---- 面包屑 ---- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  color: var(--c-gridline);
  margin-block: var(--space-5);
}

.breadcrumb__item { display: inline-flex; align-items: center; gap: var(--space-2); }

.breadcrumb__item a { color: var(--c-wood); border-bottom: 1px solid rgba(107, 74, 47, 0.4); }
.breadcrumb__item a:hover { border-bottom-color: var(--c-bookmark); color: var(--c-bookmark); }

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--c-gridline);
}

/* ---- 正文容器 ---- */
.prose {
  max-width: 40rem;
  font-size: var(--fs-body);
  line-height: var(--lh-prose);
  color: var(--c-ink);
}

.prose > * + * { margin-top: var(--space-5); }

.prose h2 { margin-top: var(--space-7); }

.prose h3 { margin-top: var(--space-6); color: var(--c-wood-shadow); }

.prose ul, .prose ol { padding-left: var(--space-5); list-style: disc; }
.prose ol { list-style: decimal; }
.prose li + li { margin-top: var(--space-2); }

.prose a { color: var(--c-bookmark); border-bottom: 1px solid rgba(210, 84, 42, 0.4); }
.prose a:hover { border-bottom-color: var(--c-bookmark); }

.prose blockquote {
  padding-left: var(--space-5);
  border-left: 3px solid var(--c-light);
  color: var(--c-wood);
}

/* ---- 切角面板 ---- */
.panel-cut {
  position: relative;
  padding: var(--space-6);
  background-color: var(--c-paper);
  border: 1px solid rgba(107, 74, 47, 0.28);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}

.panel-cut--left {
  clip-path: polygon(22px 0, 100% 0, 100% 100%, 0 100%, 0 22px);
}

/* ---- 书签条与分隔线 ---- */
.bookmark-strip {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  padding: 10px var(--space-5);
  background-color: var(--c-bookmark);
  color: var(--c-paper);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.06em;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  transform-origin: left center;
}

.bookmark-strip[data-reveal] { transform: scaleX(0); }
.bookmark-strip[data-inview] { transform: scaleX(1); transition: transform 320ms var(--ease-out); }

.bookmark-strip .dial-index { color: var(--c-paper); }

.rule-light {
  height: 1px;
  border: 0;
  background-color: rgba(140, 147, 132, 0.55);
  margin-block: var(--space-7);
}

.rule-glow {
  height: 1px;
  border: 0;
  background-color: rgba(140, 147, 132, 0.55);
  box-shadow: 0 0 8px 2px rgba(242, 183, 92, 0.45);
  margin-block: var(--space-7);
}

/* ---- 状态标签 ---- */
.status-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.06em;
  border-radius: var(--radius-pill);
  border: 1px solid currentColor;
}

.status-tag--version { color: var(--c-ink-green); background-color: rgba(31, 74, 61, 0.08); }
.status-tag--visit { color: var(--c-ink-green); background-color: rgba(31, 74, 61, 0.14); }

/* ---- 复制按钮 ---- */
.copy-btn {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 2px 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  color: var(--c-wood);
  border: 1px solid rgba(107, 74, 47, 0.4);
  border-radius: var(--radius-pill);
  transition: border-color 160ms var(--ease-out), color 160ms var(--ease-out);
}

.copy-btn:hover { border-color: var(--c-light); color: var(--c-bookmark); }
.copy-btn[data-copied] { color: var(--c-paper); background-color: var(--c-ink-green); border-color: var(--c-ink-green); }

/* ---- 分段切换（tablist） ---- */
.tabs { margin-top: var(--space-5); }

.tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid rgba(140, 147, 132, 0.5);
}

.tabs__tab {
  min-height: 44px;
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.06em;
  color: var(--c-wood);
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  transition: border-color 160ms var(--ease-out), background-color 160ms var(--ease-out);
}

.tabs__tab:hover { border-color: var(--c-light); }

.tabs__tab[aria-selected="true"] {
  color: var(--c-paper);
  background-color: var(--c-wood);
  border-color: var(--c-wood);
}

.tabs__panel { padding-top: var(--space-5); }
.tabs__panel[hidden] { display: none; }

/* ---- 显现元素 ---- */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 400ms var(--ease-out), transform 400ms var(--ease-out);
}

.reveal[data-inview] { opacity: 1; transform: none; }

/* ---- 返回顶部 ---- */
.to-top {
  position: fixed;
  right: var(--space-5);
  bottom: var(--space-5);
  z-index: 90;
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  color: var(--c-paper);
  background-color: var(--c-wood-shadow);
  border-radius: var(--radius-pill);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 200ms var(--ease-out), transform 200ms var(--ease-out), visibility 200ms;
}

.to-top[data-visible] { opacity: 1; visibility: visible; transform: none; }

/* ---- 图片容器基础规则 ---- */
.media-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--c-grain);
  border: 1px solid rgba(107, 74, 47, 0.28);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

.media-frame--portrait { aspect-ratio: 3 / 5; }

.media-frame--wide { aspect-ratio: 16 / 9; }

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame__caption {
  margin-top: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  color: var(--c-gridline);
}

/* ---- 页脚 ---- */
.site-footer {
  position: relative;
  margin-top: var(--space-8);
  background-color: var(--c-wood-shadow);
  color: var(--c-grain);
  overflow: hidden;
}

.site-footer__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(229, 214, 192, 0.08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(229, 214, 192, 0.08) 1px, transparent 1px);
  background-size: var(--grid-step) var(--grid-step);
}

.site-footer__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.3fr 1fr 1.6fr 1fr;
  gap: var(--space-6);
  padding-block: var(--space-8) var(--space-6);
}

.site-footer__brand {
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-paper);
}

.site-footer__tagline {
  margin-top: var(--space-3);
  font-size: 0.9375rem;
  color: var(--c-grain);
}

.site-footer__plate {
  margin-top: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  color: rgba(229, 214, 192, 0.78);
}

.site-footer__head {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.14em;
  color: var(--c-light);
  margin-bottom: var(--space-3);
}

.site-footer__list { font-size: 0.9375rem; line-height: 1.9; }

.site-footer__list a { color: var(--c-grain); border-bottom: 1px solid transparent; }
.site-footer__list a:hover { color: var(--c-paper); border-bottom-color: var(--c-light); }

.site-footer__list--contact li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.site-footer__key {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  color: var(--c-light);
  min-width: 34px;
}

.site-footer__value { color: var(--c-paper); word-break: break-word; }

.site-footer__value:hover { color: var(--c-light); }

.site-footer__meta { font-size: 0.9375rem; color: var(--c-grain); line-height: 1.85; }
.site-footer__meta + .site-footer__meta { margin-top: var(--space-3); }
.site-footer__meta a { color: var(--c-grain); border-bottom: 1px solid rgba(229, 214, 192, 0.5); }
.site-footer__meta a:hover { color: var(--c-paper); border-bottom-color: var(--c-light); }

.site-footer__bottom {
  position: relative;
  z-index: 1;
  border-top: 1px solid rgba(229, 214, 192, 0.22);
  padding-block: var(--space-4);
}

.site-footer__bottom-inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.site-footer__line {
  flex: 1 1 auto;
  height: 1px;
  background-image: linear-gradient(to right, rgba(229, 214, 192, 0.4) 50%, transparent 0);
  background-size: 12px 1px;
  background-repeat: repeat-x;
}

.site-footer__note {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  color: rgba(229, 214, 192, 0.8);
}

.site-footer .dial-index { color: var(--c-light); }
.site-footer .copy-btn { color: var(--c-grain); border-color: rgba(229, 214, 192, 0.4); }
.site-footer .copy-btn:hover { color: var(--c-paper); border-color: var(--c-light); }
.site-footer .copy-btn[data-copied] { color: var(--c-wood-shadow); background-color: var(--c-light); border-color: var(--c-light); }

/* ---- 响应式 ---- */
@media (max-width: 1080px) {
  .bookmark-cta__tip { display: none; }
  .site-footer__inner { grid-template-columns: 1fr 1fr; }
  .site-footer__col--brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .bw-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .bw-span-2 { grid-column: span 6; }
  .bw-span-3 { grid-column: span 3; }
  .bw-span-4 { grid-column: span 6; }
  .bw-span-6 { grid-column: span 6; }
  .bw-span-8 { grid-column: span 6; }
  .bw-span-10 { grid-column: span 6; }

  .bw-index-rail {
    border-right: 0;
    border-bottom: 1px solid rgba(140, 147, 132, 0.45);
    padding: 0 0 var(--space-3);
    margin-bottom: var(--space-5);
  }

  .bw-index-rail__track {
    display: flex;
    gap: var(--space-4);
    overflow-x: auto;
    white-space: nowrap;
    scrollbar-width: none;
    padding-bottom: 2px;
  }

  .bw-index-rail__track::-webkit-scrollbar { display: none; }
}

@media (max-width: 820px) {
  :root { --header-h: 64px; }

  .site-header__inner {
    border-radius: 16px;
    padding: 8px 10px;
  }

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

  .nav-capsule {
    position: absolute;
    left: var(--space-5);
    right: var(--space-5);
    top: calc(100% - 2px);
    background-color: var(--c-paper);
    border: 1px solid rgba(107, 74, 47, 0.35);
    border-radius: 14px;
    box-shadow: 0 12px 28px rgba(59, 42, 28, 0.18);
    padding: var(--space-3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 200ms var(--ease-out), transform 200ms var(--ease-out), visibility 200ms;
  }

  .nav-capsule[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav-capsule__list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
    overflow: visible;
    max-height: 70vh;
    overflow-y: auto;
  }

  .nav-capsule__link {
    width: 100%;
    min-height: 44px;
    justify-content: flex-start;
    border-radius: 10px;
    padding: 10px 14px;
  }

  .bookmark-cta__btn { padding: 10px 14px; }

  .brand__plate { display: none; }

  .site-footer__inner { grid-template-columns: 1fr; gap: var(--space-5); }
  .site-footer__bottom-inner { flex-wrap: wrap; }
}

@media (max-width: 560px) {
  .bw-container { padding-inline: var(--space-4); }

  .bw-grid { gap: var(--space-4); }
  .bw-span-3 { grid-column: span 6; }

  .panel-cut, .panel-cut--left { padding: var(--space-5); }

  .to-top { right: var(--space-4); bottom: var(--space-4); }

  .brand__name { font-size: 1rem; }

  .bookmark-cta__btn { font-size: 0.875rem; padding: 10px 12px; }
}

/* ---- 减少动效 ---- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal { opacity: 1; transform: none; }
  .bookmark-strip[data-reveal] { transform: none; }
  .bookmark-strip[data-inview] { transition: none; }
}