/* ==========================================================================
   牌乐门主站 · 共享样式 /assets/site.css
   骨架：左侧品牌轨道 + 悬浮胶囊导航 + 框景首屏 + 编号章节 + 横向标签带
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, h5, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img, svg, video { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
table { width: 100%; border-collapse: collapse; }

/* ---------- 2. 变量 ---------- */
:root {
  --pl-green-900: #0A2A21;
  --pl-green-700: #123F32;
  --pl-green-500: #17614A;
  --pl-green-300: #4E9377;
  --pl-green-100: #D8EBE1;
  --pl-gold-500: #D9A441;
  --pl-gold-200: #F1DCA9;
  --pl-coral: #FF6A45;
  --pl-blue: #2E6BE6;
  --pl-paper: #F6F8F5;
  --pl-ink: #121917;

  --pl-line: rgba(18, 63, 50, .14);
  --pl-line-soft: rgba(18, 63, 50, .08);
  --pl-line-invert: rgba(246, 248, 245, .16);

  --pl-shell: 1260px;
  --pl-rail-w: 88px;

  --pl-r-xl: 30px;
  --pl-r-l: 22px;
  --pl-r-m: 14px;
  --pl-r-s: 8px;

  --pl-shadow-dock: 0 24px 50px -32px rgba(10, 42, 33, .65);
  --pl-shadow-card: 0 30px 60px -44px rgba(10, 42, 33, .75);

  --pl-font: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --pl-font-num: "Barlow Semi Condensed", "Oswald", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --pl-ease: cubic-bezier(.22, .78, .24, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  font-family: var(--pl-font);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.75;
  color: var(--pl-ink);
  background-color: var(--pl-paper);
  background-image:
    linear-gradient(to right, rgba(18, 63, 50, .045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(18, 63, 50, .045) 1px, transparent 1px);
  background-size: 88px 88px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4 { font-weight: 700; line-height: 1.26; color: var(--pl-green-900); }
h1 { font-size: clamp(30px, 4vw, 46px); font-weight: 900; }
h2 { font-size: clamp(24px, 2.6vw, 32px); }
h3 { font-size: 20px; }
p { line-height: 1.78; }
strong { font-weight: 700; }
::selection { background: var(--pl-gold-200); color: var(--pl-green-900); }

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

/* ---------- 4. 容器 ---------- */
.pl-shell {
  width: 100%;
  max-width: var(--pl-shell);
  margin-inline: auto;
  padding-inline: clamp(18px, 4vw, 48px);
}

/* ---------- 5. 左侧品牌轨道 ---------- */
.pl-rail { display: none; }
@media (min-width: 1024px) {
  body[data-rail="on"] { padding-left: var(--pl-rail-w); }
  .pl-rail {
    display: flex;
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--pl-rail-w);
    z-index: 75;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    padding: 30px 0 26px;
    background-color: var(--pl-green-700);
    background-image: linear-gradient(180deg, rgba(10, 42, 33, .6), rgba(10, 42, 33, 0) 42%);
    color: rgba(246, 248, 245, .72);
  }
  .pl-rail__label {
    writing-mode: vertical-rl;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .34em;
    color: var(--pl-gold-500);
  }
  .pl-rail__ticks { display: flex; flex-direction: column; align-items: center; gap: 10px; }
  .pl-tick { width: 2px; height: 14px; border-radius: 2px; background: rgba(246, 248, 245, .28); }
  .pl-tick--on { background: var(--pl-gold-500); }
}

/* ---------- 6. 跳转链接 ---------- */
.pl-skip {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--pl-green-900);
  color: var(--pl-paper);
  font-size: 14px;
  font-weight: 700;
  transform: translateY(-190%);
  transition: transform .24s var(--pl-ease);
}
.pl-skip:focus { transform: translateY(0); }

/* ---------- 7. 页头 ---------- */
.pl-header {
  position: sticky;
  top: 0;
  z-index: 90;
  padding-bottom: 14px;
  background: rgba(246, 248, 245, .9);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--pl-line-soft);
  transition: padding .32s var(--pl-ease);
}

.pl-utility {
  overflow: hidden;
  max-height: 64px;
  background: var(--pl-green-900);
  color: var(--pl-green-100);
  transition: max-height .34s var(--pl-ease), opacity .28s var(--pl-ease);
}
.pl-utility__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 40px;
  font-size: 13px;
}
.pl-utility__label {
  flex: none;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .22em;
  color: var(--pl-gold-500);
}
.pl-utility__list { flex: 1; display: flex; flex-wrap: wrap; align-items: center; gap: 2px; }
.pl-utility__link {
  display: inline-block;
  padding: 4px 13px;
  border-radius: 999px;
  font-size: 13px;
  color: rgba(246, 248, 245, .82);
  transition: background .2s var(--pl-ease), color .2s var(--pl-ease);
}
.pl-utility__link:hover { background: rgba(217, 164, 65, .2); color: var(--pl-gold-200); }
.pl-utility__tip { flex: none; font-size: 12px; color: rgba(216, 235, 225, .5); }

.pl-header[data-condensed] { padding-bottom: 8px; }
.pl-header[data-condensed] .pl-utility { max-height: 0; opacity: 0; }

.pl-dock { padding-top: 12px; transition: padding .32s var(--pl-ease); }
.pl-dock__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 9px 12px 9px 18px;
  background: rgba(255, 255, 255, .88);
  border: 1px solid var(--pl-line);
  border-radius: 999px;
  box-shadow: var(--pl-shadow-dock);
  transition: padding .32s var(--pl-ease), box-shadow .32s var(--pl-ease);
}
.pl-header[data-condensed] .pl-dock { padding-top: 6px; }
.pl-header[data-condensed] .pl-dock__inner { padding: 6px 10px 6px 16px; }

/* 品牌 */
.pl-brand { display: inline-flex; align-items: center; gap: 10px; flex: none; }
.pl-brand__mark {
  position: relative;
  flex: none;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--pl-green-900);
  box-shadow: inset 0 0 0 1.5px rgba(217, 164, 65, .45);
}
.pl-brand__mark::before {
  content: "";
  position: absolute;
  inset: 9px 11px;
  border-radius: 3px;
  background: var(--pl-gold-500);
}
.pl-brand__mark::after {
  content: "";
  position: absolute;
  right: 6px;
  bottom: 6px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--pl-coral);
}
.pl-brand__text { display: flex; flex-direction: column; gap: 1px; }
.pl-brand__name { font-size: 16px; font-weight: 900; line-height: 1.15; color: var(--pl-green-900); }
.pl-brand__sub { font-size: 10px; font-weight: 500; line-height: 1; letter-spacing: .26em; color: var(--pl-green-300); }

.pl-brand--invert .pl-brand__mark { background: var(--pl-gold-500); box-shadow: inset 0 0 0 1.5px rgba(10, 42, 33, .25); }
.pl-brand--invert .pl-brand__mark::before { background: var(--pl-green-900); }
.pl-brand--invert .pl-brand__name { color: var(--pl-paper); }
.pl-brand--invert .pl-brand__sub { color: var(--pl-green-300); }

/* 导航 */
.pl-nav {
  flex: 1;
  display: flex;
  justify-content: center;
  min-width: 0;
  transition: opacity .3s var(--pl-ease), transform .3s var(--pl-ease);
}
.pl-nav__list { display: flex; align-items: center; gap: 2px; }
.pl-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 14px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--pl-green-700);
  white-space: nowrap;
  transition: background .2s var(--pl-ease), color .2s var(--pl-ease);
}
.pl-nav__link::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--pl-green-300);
  opacity: .5;
  transition: background .2s var(--pl-ease), opacity .2s var(--pl-ease);
}
.pl-nav__link:hover { background: var(--pl-green-100); color: var(--pl-green-900); }
.pl-nav__link:hover::before { background: var(--pl-coral); opacity: 1; }
.pl-nav__link[aria-current="page"] { background: var(--pl-green-500); color: #fff; font-weight: 700; }
.pl-nav__link[aria-current="page"]::before { background: var(--pl-gold-500); opacity: 1; }

.pl-header[data-condensed] .pl-nav { opacity: 0; transform: translateY(-6px); pointer-events: none; }
.pl-header[data-condensed]:hover .pl-nav,
.pl-header[data-condensed]:focus-within .pl-nav { opacity: 1; transform: none; pointer-events: auto; }

.pl-dock__actions { display: flex; align-items: center; gap: 8px; flex: none; }

/* 按钮 */
.pl-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: background .2s var(--pl-ease), color .2s var(--pl-ease), border-color .2s var(--pl-ease), transform .2s var(--pl-ease);
}
.pl-btn:active { transform: translateY(1px); }
.pl-btn--ghost { background: transparent; color: var(--pl-green-700); border-color: rgba(18, 63, 50, .22); }
.pl-btn--ghost:hover { background: var(--pl-green-100); border-color: var(--pl-green-300); }
.pl-btn--solid { background: var(--pl-green-500); color: #fff; }
.pl-btn--solid:hover { background: var(--pl-green-700); }
.pl-btn--gold { background: var(--pl-gold-500); color: var(--pl-green-900); }
.pl-btn--gold:hover { background: var(--pl-gold-200); }
.pl-btn--coral { background: var(--pl-coral); color: #fff; }
.pl-btn--coral:hover { filter: brightness(.93); }

/* 菜单按钮 */
.pl-nav-toggle {
  display: none;
  position: relative;
  flex: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(18, 63, 50, .18);
  border-radius: 999px;
  background: #fff;
}
.pl-nav-toggle span {
  position: absolute;
  left: 13px;
  right: 13px;
  height: 2px;
  border-radius: 2px;
  background: var(--pl-green-700);
  transition: transform .24s var(--pl-ease), opacity .2s var(--pl-ease);
}
.pl-nav-toggle span:nth-child(1) { top: 16px; }
.pl-nav-toggle span:nth-child(2) { top: 21px; }
.pl-nav-toggle span:nth-child(3) { top: 26px; }
.pl-nav-toggle[aria-expanded="true"] { background: var(--pl-green-100); border-color: var(--pl-green-300); }
.pl-nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.pl-nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.pl-nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* 阅读进度 */
.pl-header__progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  display: block;
  height: 2px;
  background: linear-gradient(90deg, var(--pl-gold-500), var(--pl-coral));
  transform: scaleX(var(--pl-progress, 0));
  transform-origin: left center;
  will-change: transform;
}

/* ---------- 8. 页脚 ---------- */
.pl-footer {
  position: relative;
  margin-top: clamp(64px, 8vw, 120px);
  background-color: var(--pl-green-900);
  background-image: radial-gradient(120% 90% at 88% 0%, rgba(78, 147, 119, .22), transparent 62%);
  color: rgba(246, 248, 245, .82);
}
.pl-footer::before {
  content: "";
  display: block;
  height: 7px;
  background-image: repeating-linear-gradient(90deg, var(--pl-gold-500) 0 2px, transparent 2px 18px);
  opacity: .55;
}
.pl-footer__inner { padding-block: clamp(38px, 5vw, 68px) 30px; }

.pl-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr);
  gap: clamp(26px, 4vw, 64px);
}
.pl-footer__brand { display: flex; flex-direction: column; gap: 16px; }
.pl-footer__pitch { max-width: 30em; font-size: 15px; line-height: 1.8; color: rgba(216, 235, 225, .74); }
.pl-footer__fixed { display: flex; flex-wrap: wrap; gap: 10px; }

.pl-footer__nav { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.pl-footer__col { min-width: 0; }
.pl-footer__title { margin-bottom: 12px; font-size: 12px; font-weight: 700; letter-spacing: .2em; color: var(--pl-gold-500); }
.pl-footer__list { display: flex; flex-direction: column; gap: 2px; }
.pl-footer__link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 6px 0;
  font-size: 15px;
  color: rgba(246, 248, 245, .76);
  transition: color .2s var(--pl-ease), transform .24s var(--pl-ease);
}
.pl-footer__link::before { content: ""; width: 14px; height: 1px; background: currentColor; opacity: .45; }
.pl-footer__link:hover { color: var(--pl-gold-200); transform: translateX(4px); }

.pl-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid rgba(246, 248, 245, .26);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--pl-paper);
  transition: background .2s var(--pl-ease), color .2s var(--pl-ease), border-color .2s var(--pl-ease);
}
.pl-chip:hover { background: rgba(246, 248, 245, .12); border-color: var(--pl-gold-500); color: var(--pl-gold-200); }
.pl-chip--coral { border-color: rgba(255, 106, 69, .55); color: #FFCDBF; }
.pl-chip--coral:hover { background: var(--pl-coral); border-color: var(--pl-coral); color: #fff; }
.pl-chip[aria-pressed="true"] { background: var(--pl-gold-200); border-color: var(--pl-gold-200); color: var(--pl-green-900); }

.pl-footer__contact {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: clamp(18px, 3vw, 40px);
  margin-top: clamp(28px, 4vw, 46px);
  padding-top: 26px;
  border-top: 1px solid var(--pl-line-invert);
}
.pl-contact { display: flex; flex-wrap: wrap; gap: 14px 36px; }
.pl-contact__item { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.pl-contact__key { font-size: 11px; font-weight: 700; letter-spacing: .18em; color: var(--pl-green-300); }
.pl-contact__value { font-size: 15px; color: rgba(246, 248, 245, .9); word-break: break-all; }
button.pl-contact__value {
  padding: 0 0 2px;
  text-align: left;
  border-bottom: 1px dashed rgba(246, 248, 245, .32);
  transition: color .2s var(--pl-ease), border-color .2s var(--pl-ease);
}
button.pl-contact__value:hover { color: var(--pl-gold-200); border-color: var(--pl-gold-500); }
.pl-footer__note { font-size: 13px; line-height: 1.75; color: rgba(216, 235, 225, .62); }

.pl-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 26px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--pl-line-invert);
}
.pl-footer__legal, .pl-footer__closing { font-size: 13px; color: rgba(216, 235, 225, .58); }

/* ---------- 9. 通用组件 ---------- */
.pl-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 22px;
  font-size: 13px;
  color: var(--pl-green-300);
}
.pl-breadcrumb__link { color: var(--pl-blue); }
.pl-breadcrumb__link:hover { text-decoration: underline; text-underline-offset: 3px; }
.pl-breadcrumb__sep { opacity: .6; }
.pl-breadcrumb__here { font-weight: 600; color: var(--pl-green-700); }

.pl-section { padding-block: clamp(46px, 6.5vw, 96px); }
.pl-section__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: clamp(20px, 3vw, 34px);
}
.pl-section__index {
  font-family: var(--pl-font-num);
  font-size: clamp(52px, 7vw, 104px);
  font-weight: 700;
  line-height: .84;
  letter-spacing: -.02em;
  color: var(--pl-gold-500);
  font-variant-numeric: tabular-nums;
}
.pl-title { font-size: clamp(24px, 3vw, 34px); font-weight: 700; color: var(--pl-green-900); }
.pl-kicker { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .22em; color: var(--pl-green-500); }
.pl-lede { max-width: 38em; font-size: 17px; color: rgba(18, 25, 23, .78); }

.pl-legend {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding: 12px 0;
  scrollbar-width: thin;
}
.pl-legend__item {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--pl-green-100);
  color: var(--pl-green-700);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: background .2s var(--pl-ease), color .2s var(--pl-ease), border-color .2s var(--pl-ease);
}
.pl-legend__item:hover { background: var(--pl-gold-200); color: var(--pl-green-900); }
.pl-legend__item[aria-current="true"],
.pl-legend__item[aria-pressed="true"] { background: var(--pl-green-500); border-color: var(--pl-green-500); color: #fff; }

.pl-grid { display: grid; gap: clamp(14px, 1.8vw, 22px); grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.pl-grid--2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.pl-grid--tight { gap: 10px; }

.pl-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 2.2vw, 28px);
  background: #fff;
  border: 1px solid var(--pl-line);
  border-radius: var(--pl-r-l);
  transition: border-color .24s var(--pl-ease), transform .24s var(--pl-ease), box-shadow .24s var(--pl-ease);
}
.pl-card:hover { border-color: var(--pl-green-300); transform: translateY(-3px); box-shadow: var(--pl-shadow-card); }
.pl-card__title { font-size: 19px; font-weight: 700; color: var(--pl-green-900); }
.pl-card__text { font-size: 15px; line-height: 1.75; color: rgba(18, 25, 23, .72); }
.pl-card__arrow {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--pl-green-500);
  transition: transform .24s var(--pl-ease), color .24s var(--pl-ease);
}
.pl-card:hover .pl-card__arrow { transform: translateX(4px); color: var(--pl-coral); }

.pl-media {
  position: relative;
  overflow: hidden;
  border-radius: var(--pl-r-m);
  aspect-ratio: 16 / 9;
  background-color: var(--pl-green-100);
  background-image:
    radial-gradient(circle at 16% 24%, rgba(78, 147, 119, .55) 0 3px, transparent 3.5px),
    radial-gradient(circle at 68% 72%, rgba(217, 164, 65, .6) 0 3px, transparent 3.5px),
    repeating-linear-gradient(45deg, rgba(18, 63, 50, .06) 0 9px, transparent 9px 18px);
}
.pl-media > img,
.pl-media > svg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.pl-media--4x3 { aspect-ratio: 4 / 3; }
.pl-media--1x1 { aspect-ratio: 1 / 1; }
.pl-media--wide { aspect-ratio: 21 / 9; }
.pl-media--frame { border: 1px solid var(--pl-line); box-shadow: inset 0 0 0 8px rgba(255, 255, 255, .55); }

.pl-prose { max-width: 38em; font-size: 17px; line-height: 1.8; }
.pl-prose > * + * { margin-top: 14px; }
.pl-prose h3 { margin-top: 30px; font-size: 20px; }
.pl-prose ul, .pl-prose ol { padding-left: 1.25em; list-style: disc; }
.pl-prose ol { list-style: decimal; }
.pl-prose li + li { margin-top: 6px; }
.pl-prose a { color: var(--pl-blue); text-decoration: underline; text-underline-offset: 3px; }
.pl-prose code { padding: 2px 6px; border-radius: 6px; background: var(--pl-green-100); font-family: var(--pl-font-num); font-size: 15px; }

.pl-panel { background: #fff; border: 1px solid var(--pl-line); border-radius: var(--pl-r-m); overflow: hidden; }
.pl-panel + .pl-panel { margin-top: 10px; }
.pl-panel__head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 20px;
  background: var(--pl-green-100);
  font-size: 16px;
  font-weight: 600;
  color: var(--pl-green-900);
  cursor: pointer;
  list-style: none;
}
.pl-panel__head::-webkit-details-marker { display: none; }
.pl-panel__head::after {
  content: "+";
  margin-left: auto;
  font-family: var(--pl-font-num);
  font-size: 20px;
  line-height: 1;
  color: var(--pl-green-500);
}
.pl-panel[open] .pl-panel__head::after { content: "\2013"; }
.pl-panel__body { padding: 16px 20px 20px; font-size: 16px; color: rgba(18, 25, 23, .82); }

.pl-totop {
  position: fixed;
  right: clamp(16px, 3vw, 30px);
  bottom: clamp(16px, 3vw, 30px);
  z-index: 85;
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--pl-green-500);
  color: #fff;
  box-shadow: 0 22px 44px -22px rgba(10, 42, 33, .8);
  opacity: 0;
  transform: translateY(14px);
  pointer-events: none;
  transition: opacity .3s var(--pl-ease), transform .3s var(--pl-ease), background .2s var(--pl-ease);
}
.pl-totop::before {
  content: "";
  width: 13px;
  height: 13px;
  border-left: 2px solid currentColor;
  border-top: 2px solid currentColor;
  transform: rotate(45deg) translate(2px, 2px);
}
.pl-totop[data-visible] { opacity: 1; transform: none; pointer-events: auto; }
.pl-totop:hover { background: var(--pl-coral); }

.pl-js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .6s var(--pl-ease), transform .6s var(--pl-ease);
}
.pl-js-reveal [data-reveal].pl-in { opacity: 1; transform: none; }

/* ---------- 10. 响应式 ---------- */
@media (max-width: 1120px) {
  .pl-nav__link { padding: 8px 11px; font-size: 14px; }
  .pl-dock__actions { gap: 6px; }
  .pl-btn { padding: 10px 15px; font-size: 13px; }
}

@media (max-width: 960px) {
  .pl-nav-toggle { display: block; }
  .pl-dock__actions { display: none; }
  .pl-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 12px);
    display: none;
    flex-direction: column;
    max-height: min(72vh, 520px);
    overflow-y: auto;
    padding: 14px;
    background: rgba(255, 255, 255, .98);
    border: 1px solid var(--pl-line);
    border-radius: var(--pl-r-l);
    box-shadow: 0 30px 60px -34px rgba(10, 42, 33, .8);
    transform: none;
  }
  .pl-nav[data-open] { display: flex; animation: pl-drop .26s var(--pl-ease) both; }
  .pl-header[data-condensed] .pl-nav { opacity: 1; transform: none; pointer-events: auto; }
  .pl-nav__list { flex-direction: column; align-items: stretch; gap: 4px; }
  .pl-nav__link { justify-content: flex-start; padding: 14px 16px; border-radius: var(--pl-r-m); font-size: 16px; }
  .pl-nav__link[aria-current="page"] { background: var(--pl-green-100); color: var(--pl-green-900); }
  .pl-nav__link[aria-current="page"]::before { background: var(--pl-gold-500); }

  .pl-footer__top { grid-template-columns: minmax(0, 1fr); }
  .pl-footer__contact { grid-template-columns: minmax(0, 1fr); }
}

@keyframes pl-drop {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: none; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .pl-header { padding-bottom: 10px; }
  .pl-utility__label, .pl-utility__tip { display: none; }
  .pl-utility__inner { min-height: 38px; }
  .pl-utility__list { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; }
  .pl-dock__inner { gap: 8px; padding: 7px 8px 7px 12px; }
  .pl-brand__mark { width: 34px; height: 34px; border-radius: 10px; }
  .pl-brand__name { font-size: 15px; }
  .pl-section__head { flex-direction: column; align-items: flex-start; gap: 6px; }
  .pl-footer__nav { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 14px; }
  .pl-totop { width: 46px; height: 46px; }
}

/* ---------- 11. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .pl-js-reveal [data-reveal] { opacity: 1; transform: none; }
}