/* =========================================================================
   青翎引路 · 人淀共生
   杂志编排风：全幅照片 + 大留白 + 衬线大标题 + 左对齐内容区

   两页结构：
     index.html    封面页，不设导航栏，中间 EXPLORE 进入内容界面
     explore.html  内容界面，顶部为导航栏

   圆角规则（全站一套）：按钮 = 胶囊 999px，面板与图片 = 12px
   ========================================================================= */

:root {
  --navy: #16233f;
  --navy-2: #2a3550;
  --navy-3: #3a4660;
  --mist: #8f98a8;

  --paper: #f5f6f4;
  --white: #ffffff;

  --rule: rgba(22, 35, 63, 0.14);
  --rule-strong: rgba(22, 35, 63, 0.32);
  --glass-line: rgba(255, 255, 255, 0.24);

  --r: 12px;
  --r-pill: 999px;

  --shell: 1400px;
  --bar: 76px;

  --serif: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "STSong",
    "SimSun", "Times New Roman", serif;
  --sans: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC",
    "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --latin: "Segoe UI Variable Display", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

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

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

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--navy);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

::selection { background: rgba(22, 35, 63, 0.14); }

:focus-visible {
  outline: 2px solid var(--navy);
  outline-offset: 3px;
  border-radius: 4px;
}

.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 clamp(22px, 6vw, 88px);
}

/* ======================================================== 封面页 */
.page-landing { background: #0d1728; }

.hero {
  position: relative;
  min-height: 100dvh;
  overflow: hidden;
}

.hero__media { position: absolute; inset: 0; }

.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 53%;
  transform: scale(1.03);
  animation: heroDrift 38s ease-in-out infinite alternate;
}

@keyframes heroDrift {
  from { transform: scale(1.03) translate3d(0, 0, 0); }
  to { transform: scale(1.09) translate3d(-1.2%, -0.8%, 0); }
}

/* 左侧提亮保证深色文字可读，底部压暗托住角标 */
.hero__wash {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(255, 255, 255, 0.30) 0%, rgba(255, 255, 255, 0.12) 32%, rgba(255, 255, 255, 0) 58%),
    linear-gradient(180deg, rgba(9, 18, 32, 0) 56%, rgba(9, 18, 32, 0.40) 100%);
}

.hero__content {
  position: relative;
  z-index: 3;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: clamp(132px, 22vh, 248px) clamp(22px, 6vw, 88px) 0;
}

.eyebrow {
  margin: 0 0 26px;
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.32em;
  text-indent: 0.32em;
  color: var(--navy-3);
}

.eyebrow--dark { color: var(--mist); }

.hero__title {
  margin: 0 0 26px;
  max-width: 16ch;
  font-family: var(--serif);
  font-size: clamp(2.55rem, 6vw, 5.8rem);
  font-weight: 500;
  line-height: 1.14;
  letter-spacing: 0.01em;
  color: var(--navy);
}

.hero__sub {
  margin: 0 0 46px;
  font-size: clamp(1.04rem, 1.4vw, 1.28rem);
  line-height: 1.75;
  letter-spacing: 0.03em;
  color: var(--navy-2);
}

.hero__cta {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.4vw, 30px);
  flex-wrap: wrap;
}

/* 胶囊按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  padding: 15px 27px;
  border-radius: var(--r-pill);
  font-family: var(--sans);
  font-size: 14px;
  letter-spacing: 0.05em;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.32s ease, color 0.32s ease,
    border-color 0.32s ease, transform 0.32s ease, box-shadow 0.32s ease;
}

.btn--solid {
  background: var(--navy);
  color: #fff;
  box-shadow: 0 14px 34px rgba(22, 35, 63, 0.24);
}

.btn--solid:hover {
  background: #22314f;
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(22, 35, 63, 0.28);
}

.btn--solid:active { transform: translateY(0) scale(0.985); }

.btn__latin {
  font-family: var(--latin);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-indent: 0.3em;
}

.btn__sep { width: 1px; height: 13px; background: rgba(255, 255, 255, 0.42); }

.btn__cn { font-size: 14px; letter-spacing: 0.08em; }

.btn__arrow { font-family: var(--latin); font-size: 15px; transition: transform 0.32s ease; }
.btn:hover .btn__arrow { transform: translateX(3px); }

.btn--ghost {
  padding: 11px 21px;
  font-size: 13.5px;
  color: var(--navy);
  border-color: var(--rule-strong);
  background: transparent;
  flex: none;
}

.btn--ghost:hover {
  background: var(--navy);
  border-color: var(--navy);
  color: #fff;
}

.btn--ghost:hover .btn__arrow { transform: translate(2px, -2px); }

/* 圆形播放按钮 */
.play {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
  color: var(--navy);
  font-family: var(--sans);
}

.play__disc {
  width: 46px;
  height: 46px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1.5px solid rgba(22, 35, 63, 0.42);
  transition: background-color 0.32s ease, transform 0.32s ease, border-color 0.32s ease;
}

.play__triangle {
  width: 0;
  height: 0;
  margin-left: 3px;
  border-left: 9px solid var(--navy);
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
}

.play__label { font-size: 14px; letter-spacing: 0.06em; }

.play:hover .play__disc {
  background: rgba(255, 255, 255, 0.5);
  border-color: var(--navy);
  transform: scale(1.05);
}

/* 底部角标行 */
.hero__foot {
  position: absolute;
  left: 0;
  right: 0;
  bottom: clamp(20px, 4vh, 38px);
  z-index: 4;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 clamp(22px, 6vw, 88px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  margin: 0;
  padding: 9px 18px;
  border-radius: var(--r-pill);
  background: rgba(10, 20, 34, 0.5);
  border: 1px solid var(--glass-line);
  backdrop-filter: blur(14px) saturate(150%);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  color: #fff;
  font-size: 11.5px;
  letter-spacing: 0.22em;
  text-indent: 0.22em;
}

.badge__icon { display: flex; align-items: center; gap: 3px; }
.badge__icon i { display: block; width: 2px; height: 10px; background: #fff; }

/* 影片未上传时的小提示 */
.toast {
  position: absolute;
  left: clamp(22px, 6vw, 88px);
  bottom: clamp(84px, 12vh, 120px);
  z-index: 6;
  margin: 0;
  padding: 10px 18px;
  border-radius: var(--r-pill);
  background: rgba(10, 20, 34, 0.72);
  border: 1px solid var(--glass-line);
  color: #fff;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.4s ease, transform 0.4s ease;
  pointer-events: none;
}

.toast.is-on { opacity: 1; transform: none; }

/* ======================================================== 转场幕布 */
.veil {
  position: fixed;
  inset: 0;
  z-index: 90;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background:
    radial-gradient(120% 90% at 50% 108%, rgba(22, 35, 63, 0.08), transparent 62%),
    linear-gradient(180deg, #ffffff 0%, #f0f3ef 100%);
  border-top: 1px solid var(--rule);
  box-shadow: 0 -40px 90px rgba(22, 35, 63, 0.18);
  transform: translateY(101%);
  transition: transform 0.8s cubic-bezier(0.83, 0, 0.17, 1);
}

.veil__mark {
  font-family: var(--serif);
  font-size: clamp(26px, 4vw, 42px);
  font-weight: 500;
  letter-spacing: 0.42em;
  text-indent: 0.42em;
  color: var(--navy);
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.veil__sub {
  font-size: 12px;
  letter-spacing: 0.52em;
  text-indent: 0.52em;
  color: var(--navy-3);
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.5s ease 0.08s, transform 0.5s ease 0.08s;
}

body.is-leaving .veil { transform: translateY(0); }
body.is-leaving .veil__mark,
body.is-leaving .veil__sub { opacity: 1; transform: translateY(0); }

/* 幕布升起时，封面文字轻微上浮淡出 */
body.is-leaving .hero__content,
body.is-leaving .hero__foot {
  opacity: 0;
  transform: translateY(-22px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

/* ======================================================== 内容界面 */
.page-explore {
  background: var(--paper);
  color: var(--navy);
  animation: pageReveal 0.65s ease both;
}

@keyframes pageReveal {
  from { opacity: 0; }
  to { opacity: 1; }
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(245, 246, 244, 0.88);
  border-bottom: 1px solid var(--rule);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
}

.topbar__inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 56px);
  height: var(--bar);
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 28px);
}

.logo {
  display: flex;
  align-items: center;
  gap: 11px;
  flex: none;
  color: var(--navy);
  text-decoration: none;
}

.logo__mark { position: relative; width: 28px; height: 17px; }

.logo__mark::before,
.logo__mark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 9px;
  border: 1.6px solid var(--navy);
  border-color: var(--navy) transparent transparent transparent;
  border-radius: 50%;
}

.logo__mark::before { top: 2px; }
.logo__mark::after { top: 7px; opacity: 0.45; }

.logo__text { font-size: 15px; font-weight: 600; letter-spacing: 0.28em; }

.menu { margin: 0 auto; }

.menu__list {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.menu__list > li { position: relative; }

.menu__list a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 12px;
  border-radius: 7px;
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--navy-2);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.25s ease, background-color 0.25s ease;
}

.menu__list a:hover { color: var(--navy); background: rgba(22, 35, 63, 0.06); }

.menu__list a.is-active { color: var(--navy); }

.menu__list a.is-active::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 3px;
  height: 1px;
  background: var(--navy);
  opacity: 0.55;
}

/* 「首页」按钮：停在首页时高亮，靠 HTML 上的 aria-current="page" */
.menu__list a[aria-current="page"] { color: var(--navy); }

.menu__list a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 3px;
  height: 1px;
  background: var(--navy);
  opacity: 0.55;
}

.menu__list > li > a { position: relative; }

/* 「我们的调查」下拉 */
.caret {
  width: 6px;
  height: 6px;
  margin-top: -3px;
  border-right: 1.4px solid currentColor;
  border-bottom: 1.4px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.28s ease;
}

.menu__item--has-menu:hover .caret,
.menu__item--has-menu:focus-within .caret { transform: rotate(225deg); margin-top: 3px; }

.menu__panel {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  min-width: 128px;
  padding: 8px;
  display: grid;
  gap: 2px;
  border-radius: var(--r);
  background: var(--white);
  border: 1px solid var(--rule);
  box-shadow: 0 20px 44px rgba(22, 35, 63, 0.16);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 8px);
  pointer-events: none;
  transition: opacity 0.28s ease, transform 0.28s ease, visibility 0.28s ease;
}

/* 悬停过渡区，鼠标从导航移到面板不会断开 */
.menu__panel::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -12px;
  height: 12px;
}

.menu__panel a {
  display: block;
  padding: 9px 14px;
  font-size: 13.5px;
  border-radius: 7px;
}

.menu__item--has-menu:hover .menu__panel,
.menu__item--has-menu:focus-within .menu__panel {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
  pointer-events: auto;
}

.topbar__toggle {
  display: none;
  width: 42px;
  height: 42px;
  flex: none;
  border-radius: var(--r-pill);
  border: 1px solid var(--rule-strong);
  background: transparent;
  cursor: pointer;
}

.topbar__toggle span {
  display: block;
  width: 15px;
  height: 1.5px;
  margin: 4px auto;
  background: var(--navy);
  transition: transform 0.3s ease;
}

.topbar__toggle[aria-expanded="true"] span:first-child { transform: translateY(2.75px) rotate(45deg); }
.topbar__toggle[aria-expanded="true"] span:last-child { transform: translateY(-2.75px) rotate(-45deg); }

/* 开篇 */
.opening { padding-top: clamp(56px, 8vw, 104px); }

.opening__title {
  margin: 0 0 20px;
  max-width: 18ch;
  font-family: var(--serif);
  font-size: clamp(2.1rem, 5vw, 3.9rem);
  font-weight: 500;
  line-height: 1.16;
  letter-spacing: 0.01em;
}

.opening__sub {
  margin: 0 0 clamp(40px, 5vw, 64px);
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--navy-2);
}

.opening__media img {
  width: 100%;
  height: clamp(300px, 44vw, 600px);
  object-fit: cover;
  object-position: center 58%;
}

/* 内容段 */
.section {
  padding: clamp(58px, 7vw, 110px) 0;
  border-top: 1px solid var(--rule);
  scroll-margin-top: calc(var(--bar) + 12px);
}

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

.section__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.5fr);
  gap: clamp(22px, 4vw, 72px);
  align-items: start;
}

.section__index {
  margin: 0 0 12px;
  font-family: var(--latin);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--mist);
}

.section__title {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.5rem, 2.6vw, 2.25rem);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: 0.01em;
}

.lead {
  margin: 0 0 14px;
  max-width: 52ch;
  font-size: 16.5px;
  line-height: 1.8;
}

.body {
  margin: 0 0 24px;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--navy-2);
}

.sub-title {
  margin: 46px 0 10px;
  font-family: var(--serif);
  font-size: clamp(1.15rem, 1.8vw, 1.5rem);
  font-weight: 500;
  letter-spacing: 0.02em;
  scroll-margin-top: calc(var(--bar) + 16px);
}

/* 待补充占位 */
.slot {
  display: grid;
  place-items: center;
  min-height: 176px;
  border: 1px dashed rgba(22, 35, 63, 0.26);
  border-radius: var(--r);
  background: rgba(22, 35, 63, 0.02);
  color: var(--mist);
  font-size: 13px;
  letter-spacing: 0.12em;
}

.slot--wide { min-height: 268px; }
.slot--photo { min-height: 168px; }

/* 相册格子里放了照片时：铺满整格，并自动去掉虚线占位框 */
.slot--photo { padding: 0; overflow: hidden; }

.slot--photo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.slot--photo:has(img) {
  border: 0;
  background: none;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.gallery--three { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* 文章列表（explore.html #articles） */
.posts {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  border-top: 1px solid var(--rule);
}

.posts li { border-bottom: 1px solid var(--rule); }

.post {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr) 28px;
  column-gap: 22px;
  row-gap: 7px;
  align-items: start;
  padding: 22px 14px 22px 0;
  color: var(--navy);
  text-decoration: none;
  transition: background-color 0.28s ease, padding-left 0.28s ease;
}

.post:hover { background: rgba(22, 35, 63, 0.035); padding-left: 14px; }

.post__date {
  grid-column: 1;
  grid-row: 1;
  padding-top: 5px;
  font-family: var(--latin);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.post__title {
  grid-column: 2;
  grid-row: 1;
  font-family: var(--serif);
  font-size: clamp(1.05rem, 1.9vw, 1.3rem);
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.01em;
}

.post__sum {
  grid-column: 2;
  grid-row: 2;
  max-width: 56ch;
  font-size: 14px;
  line-height: 1.72;
  color: var(--navy-2);
}

.post__arrow {
  grid-column: 3;
  grid-row: 1 / -1;
  align-self: center;
  font-size: 15px;
  color: var(--mist);
  transition: transform 0.28s ease, color 0.28s ease;
}

.post:hover .post__arrow { transform: translateX(4px); color: var(--navy); }

.foot {
  border-top: 1px solid var(--rule);
  padding: 30px 0 48px;
  background: var(--paper);
}

.foot__inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.foot__inner p {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

/* ======================================================== 响应式 */
/* ==================================================== 内容首页（单屏） */
/* explore.html：整页锁在一屏内，不产生纵向滚动。
   结构 = 顶栏 + 项目标题 + 中部两栏 + 底部相册带，
   中部用 minmax(0, 1fr) 吸收高度差，窗口变矮时优先压缩中部。 */

.page-hub {
  height: 100vh;      /* 老浏览器回退 */
  height: 100dvh;
  overflow: hidden;
  background: var(--paper);
  animation: pageReveal 0.65s ease both;
}

.hub {
  height: calc(100vh - var(--bar));
  height: calc(100dvh - var(--bar));
  width: 100%;
  padding: clamp(14px, 2vh, 28px) 0 clamp(14px, 2vh, 26px);
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: clamp(12px, 1.8vh, 24px);
}

/* 标题与中部两栏走内容栏宽 */
.hub__intro,
.hub__mid {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: clamp(22px, 6vw, 88px);
}

.hub__intro {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr);
  gap: clamp(18px, 3vw, 56px);
  align-items: end;
}

.hub__intro .eyebrow { margin-bottom: 12px; }

.hub__title {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.45rem, 3.1vw, 2.5rem);
  font-weight: 500;
  line-height: 1.16;
  letter-spacing: 0.01em;
}

.hub__sub {
  margin: 0 0 3px;
  max-width: 44ch;
  font-size: clamp(13px, 1.05vw, 15px);
  line-height: 1.8;
  color: var(--navy-2);
}

/* ---- 中部两栏 ---- */

.hub__mid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(14px, 1.7vw, 24px);
  min-height: 0;
  /* 面板不跟着窗口无限拉高，多余的高度留给上下留白 */
  align-self: center;
  max-height: 100%;
}

/* 宽屏并排时：认识白洋淀在左，最近更新在右。
   窄屏是上下摞起来的，不受这里影响，仍然是最近更新在上。 */
@media (min-width: 981px) {
  .hub__mid > #about { order: 1; }
  .hub__mid > #updates { order: 2; }
}

/* 宽屏上再收一道，避免两块面板变成一大片空白 */
@media (min-width: 981px) and (min-height: 660px) {
  .hub__mid {
    min-height: min(100%, 38vh);
    max-height: min(100%, 47vh);
  }
}

.panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding: clamp(16px, 1.8vw, 26px);
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--r);
}

.panel__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rule);
}

.panel__title {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.02rem, 1.55vw, 1.28rem);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.panel__more {
  flex: none;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.25s ease;
}

.panel__more:hover { color: var(--navy); }

.panel__tag {
  flex: none;
  padding: 3px 11px;
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

/* 面板底部收尾条，把「最近更新」的白板封住 */
.panel__foot {
  margin-top: auto;
  padding-top: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid var(--rule);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--navy-2);
  text-decoration: none;
  transition: color 0.25s ease;
}

.panel__foot span { color: var(--mist); transition: transform 0.25s ease, color 0.25s ease; }
.panel__foot:hover { color: var(--navy); }
.panel__foot:hover span { transform: translateX(4px); color: var(--navy); }

/* ---- 最近更新列表（条数变多时列表内部滚动，页面仍然不动） ---- */

.updates {
  flex: 1;
  min-height: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.updates li { border-bottom: 1px solid var(--rule); }
.updates li:last-child { border-bottom: 0; }

.update {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) 20px;
  column-gap: 16px;
  row-gap: 4px;
  align-items: baseline;
  padding: 14px 6px 14px 0;
  color: var(--navy);
  text-decoration: none;
  transition: background-color 0.25s ease, padding-left 0.25s ease;
}

.update:hover { background: rgba(22, 35, 63, 0.035); padding-left: 10px; }

.update__date {
  grid-column: 1;
  grid-row: 1;
  font-family: var(--latin);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.update__title {
  grid-column: 2;
  grid-row: 1;
  font-family: var(--serif);
  font-size: clamp(0.98rem, 1.3vw, 1.1rem);
  font-weight: 500;
  line-height: 1.5;
}

.update__sum {
  grid-column: 2;
  grid-row: 2;
  font-size: 13px;
  line-height: 1.7;
  color: var(--navy-2);
}

.update__arrow {
  grid-column: 3;
  grid-row: 1 / -1;
  align-self: center;
  color: var(--mist);
  transition: transform 0.25s ease, color 0.25s ease;
}

.update:hover .update__arrow { transform: translateX(4px); color: var(--navy); }

/* ---- 认识白洋淀：还没内容的空框架 ---- */

.panel__empty {
  flex: 1;
  min-height: 0;
  margin-top: 14px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 9px;
  text-align: center;
  border: 1px dashed rgba(22, 35, 63, 0.2);
  border-radius: var(--r);
  background: rgba(22, 35, 63, 0.02);
}

/* 水纹小记号，呼应淀面 */
.panel__empty-mark {
  position: relative;
  width: 30px;
  height: 19px;
  margin-bottom: 2px;
}

.panel__empty-mark::before,
.panel__empty-mark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 10px;
  border: 1.6px solid var(--mist);
  border-color: var(--mist) transparent transparent transparent;
  border-radius: 50%;
}

.panel__empty-mark::before { top: 2px; }
.panel__empty-mark::after { top: 8px; opacity: 0.45; }

.panel__empty-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--navy-2);
}

.panel__empty-note {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

/* ==================================================== 底部相册滚动带 */
/* 这一条比上面的内容栏更宽，接近通屏，形成一条「胶片带」 */

.reel {
  min-width: 0;
  padding-inline: clamp(18px, 2.4vw, 40px);
}

.reel__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 8px;
  padding: 0 2px;
}

.reel__title {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(0.98rem, 1.35vw, 1.12rem);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.reel__note {
  font-size: 12px;
  letter-spacing: 0.07em;
  color: var(--mist);
}

.reel__viewport {
  padding: 10px 0;
  overflow: hidden;
  border: 1px solid var(--rule);
  border-radius: var(--r);
  background: rgba(22, 35, 63, 0.025);
  /* 两端淡出，滚动时不会出现生硬的切口 */
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 46px, #000 calc(100% - 46px), transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0, #000 46px, #000 calc(100% - 46px), transparent 100%);
}

.reel__track {
  display: flex;
  width: max-content;
  margin: 0;
  padding: 0;
  list-style: none;
  animation: reelScroll 46s linear infinite;
  will-change: transform;
}

.reel__viewport:hover .reel__track { animation-play-state: paused; }

/* 轨道里放了完全相同的两组，位移 50% 正好衔接下一组 */
@keyframes reelScroll {
  from { transform: translate3d(0, 0, 0); }
  to { transform: translate3d(-50%, 0, 0); }
}

.reel__slide {
  flex: none;
  width: clamp(166px, 15vw, 232px);
  height: clamp(70px, 9.4vh, 104px);
  margin-right: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  border: 1px dashed rgba(22, 35, 63, 0.17);
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(22, 35, 63, 0.055), rgba(22, 35, 63, 0.015));
  color: var(--mist);
}

/* 换成真实照片时：<li> 加上 reel__slide--photo，里面放一张 <img> */
.reel__slide--photo {
  padding: 0;
  border: 0;
  background: none;
  overflow: hidden;
}

.reel__slide--photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.reel__slide-no {
  font-family: var(--latin);
  font-size: 11px;
  letter-spacing: 0.16em;
}

.reel__slide-label {
  font-size: 12px;
  letter-spacing: 0.1em;
}
/* 队名「水 韵 经 纬」是四个字，导航条更宽了，
   所以把收成汉堡按钮的断点从 1180 提到 1240，保证窄屏不被挤出去 */
@media (max-width: 1240px) {
  .topbar__toggle { display: block; margin-left: auto; }

  .menu {
    position: absolute;
    top: 100%;
    left: 14px;
    right: 14px;
    margin: 0;
  }

  .menu__list {
    /* 收起时用 display:none，不能只用 visibility ——
       否则这个高约 900 像素的下拉菜单仍会占位，
       把整页撑出滚动条（手机端会多出 130 多像素的滚动）。 */
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    max-height: calc(100dvh - var(--bar) - 24px);
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 12px;
    border-radius: var(--r);
    background: var(--white);
    border: 1px solid var(--rule);
    box-shadow: 0 26px 56px rgba(22, 35, 63, 0.18);
  }

  .menu__list.is-open {
    display: flex;
    animation: menuDrop 0.24s ease;
  }

  @keyframes menuDrop {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: none; }
  }

  .menu__list a { padding: 12px 14px; font-size: 15px; }

  .menu__panel {
    position: static;
    min-width: 0;
    padding: 0 0 6px 16px;
    background: transparent;
    border: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
  }

  .menu__panel::before { display: none; }
  .menu__panel a { padding: 8px 14px; font-size: 13.5px; color: var(--mist); }
  .caret { display: none; }

  .section__grid { grid-template-columns: minmax(0, 1fr); gap: 22px; }
}

@media (max-width: 760px) {
  :root { --bar: 66px; }

  .hero__content { padding-top: clamp(110px, 20vh, 190px); }
  .hero__title { font-size: clamp(2.05rem, 9vw, 3rem); }
  .hero__sub { margin-bottom: 34px; }
  .hero__foot { flex-direction: column; align-items: flex-start; gap: 12px; }
  .btn { padding: 13px 20px; }
  .btn__sep { display: none; }
  .gallery, .gallery--three { grid-template-columns: minmax(0, 1fr); }
  .opening__title { font-size: clamp(1.9rem, 8vw, 2.6rem); }
  .btn--ghost { display: none; }

  /* 手机端：日期移到标题上方，把横向空间全留给标题 */
  .post {
    grid-template-columns: minmax(0, 1fr) 24px;
    column-gap: 14px;
    row-gap: 6px;
    padding: 20px 10px 20px 0;
  }

  .post__date { grid-column: 1; grid-row: 1; padding-top: 0; }
  .post__title { grid-column: 1; grid-row: 2; }
  .post__sum { grid-column: 1; grid-row: 3; }
  .post__arrow { grid-column: 2; grid-row: 1 / -1; }
}

/* ==================================================== 栏目页（每栏一屏） */
/* content.html：每个栏目各占一屏，靠地址栏里的 # 切换。
   整页 overflow:hidden，所以点导航是「换一屏」，不会出现任何下滑。 */

.page-section {
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  background: var(--paper);
  animation: pageReveal 0.5s ease both;
}

.screens { display: block; }

.screen {
  display: none;
  height: calc(100vh - var(--bar));
  height: calc(100dvh - var(--bar));
  max-width: var(--shell);
  margin-inline: auto;
  padding: clamp(20px, 3.6vh, 52px) clamp(22px, 6vw, 88px) clamp(16px, 2.4vh, 30px);
  grid-template-rows: minmax(0, 1fr) auto;
  gap: clamp(12px, 2vh, 22px);
}

/* 默认显示第一屏；一旦地址栏带了 #，就只显示被选中的那一屏 */
.screens > .screen:first-child { display: grid; }
.screen:target { display: grid; }
.screens:has(.screen:target) > .screen:first-child:not(:target) { display: none; }

.screen__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.5fr);
  gap: clamp(22px, 4vw, 72px);
  min-height: 0;
}

.screen__title {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3.6vw, 2.75rem);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.screen__body {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
  /* 内容真的超出时，只有这一块内部滚动，页面本身永远不动 */
  overflow-y: auto;
  overscroll-behavior: contain;
}

/* 占位框撑满这一栏剩下的高度 */
.screen__body .slot {
  flex: 1;
  min-height: 0;
  margin-top: clamp(14px, 2.2vh, 26px);
}

.screen__list {
  flex: 1;
  min-height: 0;
  margin-top: clamp(14px, 2.2vh, 26px);
}

/* 多格图版：让每格保持 4:3，不跟着屏幕高度拉成细长条 */
.screen__gallery {
  flex: 1;
  min-height: 0;
  margin-top: clamp(14px, 2.2vh, 26px);
  align-content: center;
}

.screen__gallery .slot {
  min-height: 0;
  aspect-ratio: 4 / 3;
}

.gallery--four { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.gallery--two { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.screen__foot {
  margin: 0;
  padding-top: clamp(10px, 1.6vh, 16px);
  border-top: 1px solid var(--rule);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

/* 栏目正文：项目概况这类以文字为主的栏目，段落直接写在这里。
   内容太长时是这一栏内部滚动，页面本身依然不动。 */
.prose {
  margin-top: clamp(16px, 2.4vh, 28px);
  max-width: 100%;
}

.prose > *:first-child { margin-top: 0; }

.prose h3 {
  margin: 1.7em 0 0.55em;
  font-family: var(--serif);
  font-size: clamp(1.22rem, 1.7vw, 1.34rem);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--navy);
}

.prose p {
  margin: 0 0 1.05em;
  font-size: clamp(14.5px, 1.12vw, 15.5px);
  line-height: 1.95;
  color: var(--navy-2);
}

.prose ul,
.prose ol {
  margin: 0 0 1.1em;
  padding-left: 1.35em;
}

.prose li {
  margin: 0.35em 0;
  font-size: clamp(14.5px, 1.12vw, 15.5px);
  line-height: 1.9;
  color: var(--navy-2);
}

.prose strong { font-weight: 600; color: var(--navy); }

.prose a {
  color: var(--navy);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--rule-strong);
}

.prose blockquote {
  margin: 1.4em 0;
  padding: 2px 0 2px 16px;
  border-left: 2px solid var(--rule-strong);
  font-family: var(--serif);
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  line-height: 1.8;
  color: var(--navy-2);
}

.prose blockquote p:last-child { margin-bottom: 0; }

.prose figure { margin: 1.6em 0; }
.prose img { border-radius: var(--r); }

/* 项目概况：整屏文字页 —— 没有左侧大标题，正文占满整屏并居中 */
.screen--reading { padding-top: clamp(24px, 4vh, 52px); }

.reading {
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-right: 12px;
}

.reading .prose {
  max-width: 820px;
  margin: 0 auto;
}

/* 整屏阅读页比栏目里的正文再大一点点，长时间看更舒服 */
.reading .prose p,
.reading .prose li {
  font-size: clamp(15.5px, 1.15vw, 16.5px);
}

.prose h2 {
  margin: 2.1em 0 0.85em;
  font-family: var(--serif);
  font-size: clamp(1.5rem, 2.4vw, 1.78rem);
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: 0.01em;
  color: var(--navy);
}

/* ---- 单屏首页的适配 ---- */

/* 平板及以下：中部两栏改为上下堆叠，堆叠区自己滚动，页面依然不动 */
@media (max-width: 980px) {
  /* 栏目页：标题与正文上下堆叠 */
  .screen__grid {
    grid-template-columns: minmax(0, 1fr);
    /* 第一行给标题自然高度，第二行才是正文，避免中间被撑出空白 */
    grid-template-rows: auto minmax(0, 1fr);
    gap: clamp(12px, 2.2vh, 22px);
  }

  .screen__title { font-size: clamp(1.5rem, 5.4vw, 2.05rem); }

  .hub__intro {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
    align-items: start;
  }

  .hub__mid {
    grid-template-columns: minmax(0, 1fr);
    grid-auto-rows: min-content;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding-right: 4px;
  }

  .panel { min-height: 190px; }

  /* 外层已经在滚了，内层不再单独滚，避免两层滚动打架 */
  .updates { overflow-y: visible; }
}

/* 手机：进一步压高度，把空间让给「最近更新」和相册带 */
@media (max-width: 760px) {
  /* 栏目页：标题压在上方，正文占满剩下的高度 */
  .screen { padding-top: 15px; padding-bottom: 13px; gap: 10px; }
  .screen__title { font-size: clamp(1.45rem, 7vw, 1.95rem); }
  .screen .section__index { margin-bottom: 7px; }
  .gallery--four, .gallery--three { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .hub { gap: 10px; padding-top: 12px; padding-bottom: 12px; }

  .hub__title { font-size: clamp(1.3rem, 6.4vw, 1.8rem); }
  .hub__sub { display: none; }

  .hub__intro .eyebrow { margin-bottom: 8px; }

  .panel { min-height: 168px; padding: 15px 15px 16px; }
  .panel__head { padding-bottom: 10px; }
  .panel__tag, .panel__more { font-size: 11.5px; }

  /* 日期移到标题上方，横向空间全留给标题 */
  .update {
    grid-template-columns: minmax(0, 1fr) 20px;
    column-gap: 12px;
    row-gap: 3px;
    padding: 13px 4px 13px 0;
  }

  .update__date { grid-column: 1; grid-row: 1; }
  .update__title { grid-column: 1; grid-row: 2; }
  .update__sum { grid-column: 1; grid-row: 3; }
  .update__arrow { grid-column: 2; grid-row: 1 / -1; }

  .reel__note { display: none; }
  .reel__viewport { padding: 8px 0; }
  .reel__slide {
    width: clamp(132px, 40vw, 180px);
    height: clamp(62px, 8vh, 84px);
    margin-right: 10px;
  }
}

/* 窗口很矮（小笔记本、横屏手机）：再收一层，保证一屏放得下 */
@media (max-height: 640px) {
  .hub { gap: 9px; }

  .hub__sub { display: none; }
  .hub__title { font-size: clamp(1.25rem, 2.6vw, 1.75rem); }
  .hub__intro .eyebrow { margin-bottom: 7px; }

  .panel { padding: 14px 16px 15px; }
  .panel__head { padding-bottom: 9px; }
  .update { padding: 11px 6px 11px 0; }

  .reel__viewport { padding: 7px 0; }
  .reel__slide { height: clamp(56px, 11vh, 76px); }
}

/* 关掉滚动动画时，改成可以手动左右滑动的相册带 */
@media (prefers-reduced-motion: reduce) {
  .reel__viewport {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    -webkit-mask-image: none;
    mask-image: none;
  }

  .reel__track { animation: none; }
}

/* ======================================================== 偏好设置 */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .hero__media img { transform: scale(1.03); }
}

@media (prefers-reduced-transparency: reduce) {
  .badge, .topbar, .toast {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background-color: rgba(58, 78, 102, 0.96);
  }
  .topbar { background-color: rgba(245, 246, 244, 0.98); }
  .badge, .toast { background-color: rgba(10, 20, 34, 0.92); }
}

@media (prefers-contrast: more) {
  .eyebrow { color: var(--navy); }
  .hero__wash {
    background:
      linear-gradient(100deg, rgba(255, 255, 255, 0.5) 0%, rgba(255, 255, 255, 0.22) 34%, rgba(255, 255, 255, 0) 62%),
      linear-gradient(180deg, rgba(9, 18, 32, 0) 56%, rgba(9, 18, 32, 0.55) 100%);
  }
}

/* ==================================================== 联系我们（悬停下拉） */
/* 导航里的「联系我们」不是链接，是一段可以悬停展开的标签，
   所以用 <span tabindex="0"> 而不是 <a href="#">——这样点它不会
   清掉地址栏里的栏目 # 标记，也就不会把页面弹回项目概况。 */

.menu__list > li > .menu__trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 12px;
  border-radius: 7px;
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--navy-2);
  white-space: nowrap;
  cursor: default;
  transition: color 0.25s ease, background-color 0.25s ease;
}

.menu__item--has-menu:hover > .menu__trigger,
.menu__item--has-menu:focus-within > .menu__trigger {
  color: var(--navy);
  background: rgba(22, 35, 63, 0.06);
}

.menu__panel--contact {
  min-width: 232px;
  padding: 8px;
  gap: 2px;
}

.menu__panel--contact .contact {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 9px 10px;
  border-radius: 9px;
  color: var(--navy);
  text-decoration: none;
  transition: background-color 0.22s ease;
}

.menu__panel--contact .contact:hover { background: rgba(22, 35, 63, 0.06); }

.menu__panel--contact .contact__icon {
  flex: none;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--rule);
  border-radius: 9px;
  background: var(--paper);
  color: var(--navy-2);
  transition: color 0.22s ease, border-color 0.22s ease, background-color 0.22s ease;
}

.menu__panel--contact .contact__icon svg { width: 18px; height: 18px; }

.menu__panel--contact .contact:hover .contact__icon {
  color: var(--navy);
  border-color: var(--rule-strong);
  background: var(--white);
}

.menu__panel--contact .contact__text {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}

.menu__panel--contact .contact__label {
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--navy);
  white-space: nowrap;
}

.menu__panel--contact .contact__hint {
  font-size: 11.5px;
  letter-spacing: 0.02em;
  color: var(--mist);
  white-space: nowrap;
}

/* 窄屏：下拉改成汉堡菜单里的一节，跟其他项对齐 */
@media (max-width: 1240px) {
  .menu__list > li > .menu__trigger { padding: 12px 14px; font-size: 15px; }
  .menu__panel--contact { min-width: 0; }
  .menu__panel--contact .contact { padding: 10px 14px; }
}

/* ========================================== 旅游路线推荐（三条主题线路） */
/* 这一屏不用大段纯文字，改成「一条线路一张卡片」：
   左边点位图，右边点位链路（竖向时间轴）+ 设计说明。 */

/* 导航里三条线路的名字比较长，浮层要放宽一点 */
.menu__panel--routes { min-width: 190px; }

/* 从导航跳过来时，线路卡片不要被吸顶导航挡住 */
.route { scroll-margin-top: calc(var(--bar) + 22px); }

.service { max-width: 1080px; margin: 0 auto; }

.service__intro {
  margin: 0 0 clamp(20px, 3vh, 34px);
  padding-left: 16px;
  border-left: 2px solid var(--rule-strong);
  font-size: clamp(14.5px, 1.05vw, 16px);
  line-height: 1.85;
  color: var(--navy-2);
}

.route {
  margin-bottom: clamp(18px, 2.6vh, 30px);
  padding: clamp(18px, 2vw, 28px);
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--r);
}

.route__head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--rule);
}

.route__no {
  flex: none;
  padding-top: 5px;
  font-family: var(--latin);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.route__title {
  margin: 0 0 7px;
  font-family: var(--serif);
  font-size: clamp(1.15rem, 1.85vw, 1.42rem);
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: 0.01em;
  color: var(--navy);
}

.route__meta {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 5px 18px;
  font-size: 12.5px;
  letter-spacing: 0.03em;
  color: var(--mist);
}

.route__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.12fr);
  gap: clamp(18px, 2.4vw, 34px);
  margin-top: clamp(16px, 2.2vh, 24px);
}

.route__figure { margin: 0; }

.route__figure img {
  width: 100%;
  border: 1px solid var(--rule);
  border-radius: 8px;
}

.route__main { min-width: 0; }

/* 点位链路：竖向时间轴 */
.chain {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.chain li {
  position: relative;
  padding: 0 0 13px 22px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--navy);
}

.chain li::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 7px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--navy);
}

.chain li::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 16px;
  bottom: 1px;
  width: 1px;
  background: var(--rule-strong);
}

.chain li:last-child { padding-bottom: 0; }
.chain li:last-child::after { display: none; }

.route__main p {
  margin: 0;
  font-size: clamp(14px, 1vw, 15px);
  line-height: 1.95;
  color: var(--navy-2);
}

.service__note {
  margin: clamp(6px, 1.4vh, 14px) 0 0;
  padding: clamp(14px, 1.8vh, 20px) clamp(16px, 1.8vw, 22px);
  border-radius: var(--r);
  background: rgba(22, 35, 63, 0.035);
  font-size: clamp(14px, 1vw, 15px);
  line-height: 1.9;
  color: var(--navy-2);
}

/* 三条线路一览 */
.compare { margin-top: clamp(26px, 4vh, 46px); }

.compare__title {
  margin: 0 0 14px;
  font-family: var(--serif);
  font-size: clamp(1.1rem, 1.75vw, 1.32rem);
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--navy);
}

.compare .table-scroll {
  margin: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.compare table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

.compare th,
.compare td {
  padding: 11px 13px;
  border-bottom: 1px solid var(--rule);
  text-align: left;
  vertical-align: top;
  line-height: 1.72;
}

.compare th {
  font-weight: 600;
  color: var(--navy);
  border-bottom-color: var(--rule-strong);
  white-space: nowrap;
}

.compare td { color: var(--navy-2); }

.compare td:first-child {
  color: var(--navy);
  font-weight: 500;
  white-space: nowrap;
}

@media (max-width: 900px) {
  .route__body { grid-template-columns: minmax(0, 1fr); }
  .route__head { gap: 12px; }
}

@media (max-width: 760px) {
  .route { padding: 16px 15px 18px; }
  .compare table { font-size: 12.5px; min-width: 640px; }
}

/* ============================================ 项目概况（长文阅读页） */

/* 摘要：左侧一道深色竖线 + 浅底，和正文区分开 */
.abstract {
  margin: 0 0 clamp(24px, 3.4vh, 38px);
  padding: clamp(16px, 2vw, 24px) clamp(18px, 2.2vw, 28px);
  border-left: 2px solid var(--navy);
  border-radius: 0 var(--r) var(--r) 0;
  background: rgba(22, 35, 63, 0.035);
}

.abstract .abstract__label {
  margin: 0 0 12px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.24em;
  color: var(--mist);
}

.abstract p {
  margin: 0 0 0.9em;
  font-size: clamp(14.5px, 1.05vw, 15.5px);
  line-height: 1.95;
  color: var(--navy-2);
}

.abstract p:last-child { margin-bottom: 0; }

/* 插图 */
.figure img {
  width: 100%;
  border: 1px solid var(--rule);
  border-radius: var(--r);
  background: var(--white);
}

.figure a {
  display: block;
  cursor: zoom-in;
}

/* 宽屏时插图突破正文栏，方便看清图表里的字；
   窄屏保持栏宽，点图可以打开原图。 */
@media (min-width: 1320px) {
  .reading .prose .figure {
    margin-left: -110px;
    margin-right: -110px;
  }
}

/* 枚举段落：不加项目符号，靠左侧一道细线成组，
   编号沿用原文的「第一，」「其一，」「（1）」「H1：」 */
.points {
  margin: 0 0 clamp(16px, 2.2vh, 24px);
  padding: 0 0 0 clamp(14px, 1.6vw, 20px);
  list-style: none;
  border-left: 1px solid var(--rule-strong);
}

.points li {
  margin: 0 0 0.85em;
  font-size: clamp(14.5px, 1.05vw, 15.5px);
  line-height: 1.95;
  color: var(--navy-2);
}

.points li:last-child { margin-bottom: 0; }

.points--hypo li { color: var(--navy); }
.points--hypo strong { letter-spacing: 0.02em; }

/* ================================== 白洋淀特色资源库（三类资源卡片） */

.resource { max-width: 1080px; margin: 0 auto; }

.resource__title {
  margin: 0 0 14px;
  font-family: var(--serif);
  font-size: clamp(1.5rem, 2.4vw, 1.78rem);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.01em;
  color: var(--navy);
}

.resource__intro {
  margin: 0 0 clamp(20px, 3vh, 34px);
  padding-left: 16px;
  border-left: 2px solid var(--rule-strong);
  font-size: clamp(14.5px, 1.05vw, 15.5px);
  line-height: 1.95;
  color: var(--navy-2);
}

.rescard {
  margin-bottom: clamp(18px, 2.6vh, 30px);
  padding: clamp(18px, 2vw, 28px);
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--r);
}

.rescard__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 13px;
  border-bottom: 1px solid var(--rule);
}

.rescard__title {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.3rem, 1.95vw, 1.5rem);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.01em;
  color: var(--navy);
}

.rescard__tag {
  flex: none;
  padding: 3px 11px;
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

/* 关键指标：四格等分，用 1 像素细线分隔 */
.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(16px, 2.2vh, 22px) 0;
  padding: 0;
  list-style: none;
  background: var(--rule);
  border-radius: 10px;
  overflow: hidden;
}

.stats li {
  padding: 14px 14px 13px;
  background: var(--paper);
}

.stats strong {
  display: block;
  margin-bottom: 4px;
  font-family: var(--serif);
  font-size: clamp(1.02rem, 1.5vw, 1.22rem);
  font-weight: 500;
  line-height: 1.3;
  color: var(--navy);
}

.stats span {
  display: block;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--mist);
}

.rescard__body p {
  margin: 0 0 1.05em;
  font-size: clamp(14.5px, 1.05vw, 15.5px);
  line-height: 1.95;
  color: var(--navy-2);
}

.rescard__body p:last-child { margin-bottom: 0; }

/* 小结 */
.summary {
  margin-top: clamp(20px, 3vh, 34px);
  padding: clamp(18px, 2.2vw, 26px) clamp(18px, 2.4vw, 30px);
  border-left: 2px solid var(--navy);
  border-radius: 0 var(--r) var(--r) 0;
  background: rgba(22, 35, 63, 0.035);
}

.summary__title {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: clamp(1.24rem, 1.85vw, 1.4rem);
  font-weight: 600;
  color: var(--navy);
}

.summary p {
  margin: 0;
  font-size: clamp(14.5px, 1.05vw, 15.5px);
  line-height: 1.95;
  color: var(--navy-2);
}

.summary strong { font-weight: 600; color: var(--navy); }

@media (max-width: 760px) {
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rescard { padding: 16px 15px 18px; }
  .summary { padding: 16px 16px 18px; }
}

/* ==================================================== 团队介绍（成员卡片） */

.team { max-width: 1080px; margin: 0 auto; }

.team__block { margin-bottom: clamp(32px, 5vh, 56px); }
.team__block:last-child { margin-bottom: 0; }

.team__title {
  margin: 0 0 16px;
  font-family: var(--serif);
  font-size: clamp(1.5rem, 2.4vw, 1.78rem);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.01em;
  color: var(--navy);
}

.team__lead {
  margin: 0;
  padding-left: 16px;
  border-left: 2px solid var(--rule-strong);
  font-size: clamp(14.5px, 1.05vw, 15.5px);
  line-height: 1.95;
  color: var(--navy-2);
}

.team__prose p {
  margin: 0 0 1.05em;
  font-size: clamp(14.5px, 1.05vw, 15.5px);
  line-height: 1.95;
  color: var(--navy-2);
}

.team__prose p:last-child { margin-bottom: 0; }

/* 成员卡片 */
.teamgrid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.teamgrid li {
  padding: 18px 20px 20px;
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--r);
}

.teamcard__top {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px 10px;
  margin-bottom: 10px;
}

.teamcard__name {
  font-family: var(--serif);
  font-size: 1.24rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--navy);
}

.teamcard__role {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.teamcard__major {
  display: inline-block;
  margin-bottom: 11px;
  padding: 3px 11px;
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.teamgrid li p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--navy-2);
}

@media (max-width: 760px) {
  .teamgrid { grid-template-columns: minmax(0, 1fr); }
}

/* ============================================ 青翎AI交互中心（形态切换） */

.qling {
  display: flex;
  flex-direction: column;
  max-width: 1120px;
  /* 撑满整屏可用的高度，多余的都给下面的对话区 */
  min-height: 100%;
  margin: 0 auto;
}

.qling__head { margin-bottom: clamp(16px, 2.4vh, 26px); }

.qling__eyebrow {
  margin: 0 0 9px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.26em;
  color: var(--mist);
}

.qling__title {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: clamp(1.3rem, 2.2vw, 1.7rem);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.01em;
  color: var(--navy);
}

.qling__sub {
  margin: 0;
  max-width: 78ch;
  font-size: clamp(13.5px, 1vw, 15px);
  line-height: 1.85;
  color: var(--navy-2);
}

.qling__stage {
  display: grid;
  /* 左窄右宽：形象区只占三成，把地方留给对话 */
  grid-template-columns: minmax(0, 0.58fr) minmax(0, 1.42fr);
  gap: clamp(16px, 2vw, 24px);
  align-items: stretch;
  flex: 1;
  min-height: clamp(360px, 46vh, 520px);
}

/* ---- 左：形象 ---- */

.persona {
  display: flex;
  flex-direction: column;
  padding: clamp(15px, 1.7vw, 22px);
  text-align: center;
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--r);
}

.persona__switch {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px;
  margin-bottom: clamp(12px, 1.8vh, 18px);
  padding: 4px;
  background: rgba(22, 35, 63, 0.055);
  border-radius: var(--r-pill);
}

.persona__btn {
  padding: 8px 10px;
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--navy-2);
  background: transparent;
  border: 0;
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: background-color 0.26s ease, color 0.26s ease;
}

.persona__btn:hover { color: var(--navy); }
.persona__btn.is-active { background: var(--navy); color: #fff; }

.persona__stage {
  position: relative;
  width: 100%;
  max-width: 208px;
  /* 上下都留 auto：卡片被拉高时，形象组自动落在中间 */
  margin: auto auto clamp(10px, 1.6vh, 16px);
  aspect-ratio: 1 / 1;
}

/* 形象背后的淡色圆，让白底立绘不显得浮在空处 */
.persona__stage::before {
  content: "";
  position: absolute;
  inset: 6%;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 42%, rgba(22, 35, 63, 0.06), rgba(22, 35, 63, 0) 68%);
}

.persona__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0;
  transition: opacity 0.34s ease;
}

.persona__img.is-active { opacity: 1; }

.persona__name {
  margin: 0 0 3px;
  font-family: var(--serif);
  font-size: 1.32rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-indent: 0.16em;
  color: var(--navy);
}

.persona__meta {
  margin: 0 0 10px;
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--mist);
}

.persona__desc {
  margin: auto 0 0;
  text-align: left;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--navy-2);
}

/* ---- 右：对话 ---- */

.chatbox {
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--r);
}

.chatbox__head {
  display: flex;
  flex: none;
  align-items: center;
  gap: 12px;
  padding: 13px 18px;
  background: rgba(22, 35, 63, 0.02);
  border-bottom: 1px solid var(--rule);
}

.chatbox__avatar {
  flex: none;
  width: 40px;
  height: 40px;
  display: block;
  overflow: hidden;
  border-radius: 50%;
  background: var(--paper);
  border: 1px solid var(--rule);
}

/* 头像是整张立绘截出来的脸部特写，比把整个人物缩成 40 像素清楚得多 */
.chatbox__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.9);
  transform-origin: 50% 16%;
}

.chatbox__who { min-width: 0; }

.chatbox__who b {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--navy);
}

.chatbox__who small {
  display: block;
  margin-top: 2px;
  font-size: 11.5px;
  letter-spacing: 0.03em;
  color: var(--mist);
}

.chatbox__dot {
  flex: none;
  margin-left: auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #c8a24a;
}

.chatbox__window {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 10px;
  /* 消息区是唯一会让步的一块：头部、快捷提问、输入框高度固定，
     屏幕变矮时只压缩这里，多出来的消息在内部滚动。 */
  min-height: clamp(110px, 16vh, 150px);
  padding: 16px 18px;
  overflow-y: auto;
  overscroll-behavior: contain;
}

/* 消息贴着底部排，空的时候不会顶在上边留一大片白 */
.chatbox__window .msg:first-child { margin-top: auto; }

.chatbox__window .msg { animation: msgIn 0.26s ease both; }

@keyframes msgIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.chatbox__asks {
  display: flex;
  flex: none;
  flex-wrap: wrap;
  gap: 7px;
  padding: 0 18px 12px;
}

.chatbox__asks button {
  padding: 7px 13px;
  font-family: var(--sans);
  font-size: 12.5px;
  color: var(--navy-2);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: border-color 0.22s ease, color 0.22s ease;
}

.chatbox__asks button:hover { border-color: var(--rule-strong); color: var(--navy); }

.chatbox__input {
  display: flex;
  flex: none;
  gap: 9px;
  padding: 0 18px 16px;
}

.chatbox__input input {
  flex: 1;
  min-width: 0;
  padding: 11px 16px;
  font-family: var(--sans);
  font-size: 13.5px;
  color: var(--navy);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  transition: border-color 0.22s ease, background-color 0.22s ease;
}

.chatbox__input input::placeholder { color: var(--mist); }

.chatbox__input input:focus {
  outline: none;
  background: var(--white);
  border-color: var(--rule-strong);
}

.chatbox__input button {
  flex: none;
  padding: 11px 22px;
  font-family: var(--sans);
  font-size: 13.5px;
  letter-spacing: 0.06em;
  color: #fff;
  background: var(--navy);
  border: 0;
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: background-color 0.24s ease;
}

.chatbox__input button:hover { background: #22314f; }

@media (max-width: 900px) {
  .qling__stage { grid-template-columns: minmax(0, 1fr); }
  .persona__stage { max-width: 210px; }
  .chatbox__window { min-height: min(40vh, 260px); }

  /* 窄屏（形象与对话上下堆叠）：对话区最多占屏幕的七成高，
     再多的消息在对话区内部滚动，不会让整页越拉越长。 */
  .chatbox { max-height: min(70vh, 560px); }
}

/* 桌面版（左形象 / 右对话）：把这一条链上的高度都定下来，
   否则消息一多，对话区会一条条把自己撑高、把整个栏目顶出屏幕，
   而 .chatbox__window 自己的滚动条永远不会出现。 */
@media (min-width: 901px) {
  .qling { height: 100%; }
  .qling__stage { grid-template-rows: minmax(0, 1fr); }
}

/* 桌面版（左形象 / 右对话）：这一行必须允许被压缩。
   否则问题问多了，对话区会一条条把自己撑高、把整个栏目顶出屏幕，
   而 .chatbox__window 自己的滚动条永远不会出现。 */
@media (min-width: 901px) {
  .qling__stage { grid-template-rows: minmax(0, 1fr); }
}

/* ================================================ 人淀共生理念专页 */
/* 全站唯一一个允许整页滚动的栏目：顶部导航常驻，
   五个板块顺序排列，导航里的子项直接跳到对应位置。 */

html:has(.page-doc) { scroll-behavior: smooth; }

.page-doc {
  background: var(--paper);
  color: var(--navy);
  animation: pageReveal 0.5s ease both;
}

.doc {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 clamp(22px, 6vw, 72px);
}

.doc-hero { padding: clamp(48px, 9vh, 104px) 0 clamp(40px, 7vh, 80px); }

.doc-hero__title {
  margin: 0 0 24px;
  font-family: var(--serif);
  font-size: clamp(1.9rem, 4.2vw, 3.2rem);
  font-weight: 500;
  line-height: 1.22;
  letter-spacing: 0.01em;
}

.doc-hero__sub {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(14.5px, 1.15vw, 16px);
  line-height: 1.95;
  color: var(--navy-2);
}

.doc-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(28px, 5vw, 64px);
  margin: clamp(28px, 5vh, 48px) 0 0;
  padding: clamp(20px, 3vh, 28px) 0 0;
  border-top: 1px solid var(--rule);
  list-style: none;
}

.doc-hero__stats li { display: flex; flex-direction: column; gap: 4px; }

.doc-hero__stats strong {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  font-weight: 500;
  line-height: 1;
  color: var(--navy);
}

.doc-hero__stats span {
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

/* ---- 板块骨架 ---- */

.doc-section {
  padding: clamp(48px, 8vh, 96px) 0;
  border-top: 1px solid var(--rule);
  scroll-margin-top: calc(var(--bar) + 16px);
}

.doc-hero { scroll-margin-top: 0; }

.doc-head {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(20px, 3.4vw, 56px);
  align-items: end;
  margin-bottom: clamp(28px, 4.5vh, 52px);
}

.doc-eyebrow {
  margin: 0 0 14px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.26em;
  color: var(--mist);
}

.doc-title {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.4rem, 2.8vw, 2.15rem);
  font-weight: 500;
  line-height: 1.32;
  letter-spacing: 0.01em;
}

.doc-lead {
  margin: 0;
  font-size: clamp(14px, 1.05vw, 15.5px);
  line-height: 1.9;
  color: var(--navy-2);
}

/* ---- 三个共生维度（选项卡） ---- */

.tabs {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(16px, 2vw, 26px);
  align-items: start;
}

.tabs__list { display: grid; gap: 10px; }

.tabs__btn {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 16px 18px;
  text-align: left;
  font-family: var(--sans);
  color: var(--navy-2);
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--r);
  cursor: pointer;
  transition: border-color 0.25s ease, color 0.25s ease, background-color 0.25s ease;
}

.tabs__btn:hover { border-color: var(--rule-strong); }

.tabs__btn.is-active {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--white);
}

.tabs__no {
  flex: none;
  font-family: var(--latin);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.tabs__btn.is-active .tabs__no { color: rgba(255, 255, 255, 0.6); }

.tabs__label { display: flex; flex-direction: column; gap: 3px; }
.tabs__label b { font-size: 15px; font-weight: 600; letter-spacing: 0.02em; }
.tabs__label small { font-size: 12px; color: var(--mist); }
.tabs__btn.is-active .tabs__label small { color: rgba(255, 255, 255, 0.62); }

.tabs__panels {
  padding: clamp(20px, 2.4vw, 32px);
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--r);
}

.tabpanel { display: none; gap: 16px; }
.tabpanel.is-active { display: flex; }

.tabpanel__no {
  flex: none;
  font-family: var(--serif);
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  line-height: 0.9;
  color: var(--rule-strong);
}

.tabpanel__title {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: clamp(1.1rem, 1.7vw, 1.32rem);
  font-weight: 500;
  color: var(--navy);
}

.tabpanel p {
  margin: 0 0 16px;
  font-size: clamp(14px, 1.05vw, 15.5px);
  line-height: 1.95;
  color: var(--navy-2);
}

/* 标签胶囊 */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.chips li {
  padding: 5px 13px;
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--navy-2);
  background: var(--paper);
}

.chips--center { justify-content: center; }

/* 迷你流程 */
.mini-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 !important;
  font-size: 12.5px !important;
}

.mini-flow b {
  padding: 6px 12px;
  border-radius: 8px;
  background: rgba(22, 35, 63, 0.05);
  font-weight: 500;
  color: var(--navy);
}

.mini-flow i { font-style: normal; color: var(--mist); }

/* 数字传播闭环 */
.loopcard {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: clamp(20px, 3vw, 44px);
  align-items: center;
  margin-top: clamp(22px, 3.4vh, 38px);
  padding: clamp(20px, 2.6vw, 34px);
  border-radius: var(--r);
  background: rgba(22, 35, 63, 0.035);
}

.loopcard__title {
  margin: 0 0 12px;
  font-family: var(--serif);
  font-size: clamp(1.15rem, 1.9vw, 1.45rem);
  font-weight: 500;
  line-height: 1.4;
  color: var(--navy);
}

.loopcard__text p {
  margin: 0;
  font-size: clamp(14px, 1.05vw, 15.5px);
  line-height: 1.9;
  color: var(--navy-2);
}

.loopcard__nodes {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.loopcard__nodes li {
  padding: 13px 16px;
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: 10px;
}

.loopcard__nodes b {
  display: block;
  margin-bottom: 3px;
  font-size: 14px;
  font-weight: 600;
  color: var(--navy);
}

.loopcard__nodes span {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---- 散点融合演示 ---- */

.scatter {
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--r);
}

.scatter__stage {
  position: relative;
  background: var(--white);
  border-bottom: 1px solid var(--rule);
}

#scatterSvg { display: block; width: 100%; height: auto; }

/* 说明条放在图表上方，不再浮在图上，避免遮挡点位 */
.scatter__hud {
  padding: clamp(14px, 1.8vw, 20px) clamp(16px, 2.2vw, 28px);
  background: rgba(22, 35, 63, 0.028);
  border-bottom: 1px solid var(--rule);
}

.scatter__hud b {
  display: block;
  margin-bottom: 5px;
  font-family: var(--serif);
  font-size: clamp(15px, 1.4vw, 17px);
  font-weight: 500;
  color: var(--navy);
}

.scatter__hud p { margin: 0; font-size: 13px; line-height: 1.75; color: var(--mist); }

.scatter__steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--rule);
}

.stepbtn {
  padding: 16px 16px 15px;
  text-align: left;
  font-family: var(--sans);
  color: var(--mist);
  background: var(--white);
  border: 0;
  cursor: pointer;
  transition: background-color 0.25s ease, color 0.25s ease;
}

.stepbtn:hover { background: rgba(22, 35, 63, 0.03); }
.stepbtn.is-active { color: var(--navy); background: rgba(22, 35, 63, 0.06); }

.stepbtn b {
  display: block;
  margin-bottom: 5px;
  font-family: var(--latin);
  font-size: 11.5px;
  letter-spacing: 0.14em;
}

.stepbtn span { font-size: 13px; }

/* ---- 四类孤岛 ---- */

.islgrid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: clamp(18px, 2.6vh, 26px) 0 0;
  padding: 0;
  list-style: none;
}

.islcard {
  height: 100%;
  padding: 16px 18px;
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--r);
}

.islcard summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  cursor: pointer;
  list-style: none;
}

.islcard summary::-webkit-details-marker { display: none; }
.islcard summary > span { flex: none; font-size: 12.5px; letter-spacing: 0.06em; color: var(--mist); }
.islcard summary > b { font-size: 14.5px; font-weight: 600; color: var(--navy); }
.islcard p { margin: 12px 0 0; font-size: 13.5px; line-height: 1.85; color: var(--navy-2); }

/* ---- 青翎智能体 ---- */

.agent {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
  gap: clamp(20px, 3vw, 40px);
  align-items: start;
}

.agent__portrait {
  padding: clamp(22px, 2.6vw, 32px);
  text-align: center;
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--r);
}

.agent__avatar {
  width: 132px;
  height: 132px;
  margin: 0 auto 18px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: radial-gradient(120% 120% at 30% 18%, #2a3550, #16233f 72%);
}

.agent__avatar span {
  font-family: var(--serif);
  font-size: 26px;
  letter-spacing: 0.14em;
  text-indent: 0.14em;
  color: #fff;
}

.agent__badge {
  margin: 0 0 12px;
  font-family: var(--latin);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.agent__desc { margin: 0 0 16px; font-size: 14px; line-height: 1.85; color: var(--navy-2); }

.chat {
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--r);
}

.chat__head {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 13px 18px;
  background: rgba(22, 35, 63, 0.02);
  border-bottom: 1px solid var(--rule);
}

.chat__dot { width: 7px; height: 7px; border-radius: 50%; background: #4a9d6a; }
.chat__head b { font-size: 13.5px; font-weight: 600; color: var(--navy); }
.chat__head small { margin-left: auto; font-family: var(--latin); font-size: 10.5px; letter-spacing: 0.16em; color: var(--mist); }

.chat__window {
  display: flex;
  flex-direction: column;
  gap: 10px;
  height: clamp(190px, 26vh, 264px);
  padding: 18px;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.msg {
  max-width: 84%;
  padding: 11px 15px;
  border-radius: 12px;
  font-size: 13.5px;
  line-height: 1.8;
}

.msg--bot { align-self: flex-start; background: var(--paper); border: 1px solid var(--rule); color: var(--navy-2); }
.msg--user { align-self: flex-end; background: var(--navy); color: #fff; }

.chat__asks { display: flex; flex-wrap: wrap; gap: 8px; padding: 0 18px 18px; }

.chat__asks button {
  padding: 8px 13px;
  font-family: var(--sans);
  font-size: 12.5px;
  color: var(--navy-2);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: border-color 0.22s ease, color 0.22s ease;
}

.chat__asks button:hover { border-color: var(--rule-strong); color: var(--navy); }

/* ---- 六项能力 ---- */

.capgrid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: clamp(22px, 3.4vh, 36px) 0 0;
  padding: 0;
  list-style: none;
}

.capgrid li {
  padding: 18px 18px 20px;
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--r);
}

.capgrid span { display: block; margin-bottom: 8px; font-family: var(--latin); font-size: 11.5px; letter-spacing: 0.16em; color: var(--mist); }
.capgrid b { display: block; margin-bottom: 6px; font-size: 14.5px; font-weight: 600; color: var(--navy); }
.capgrid p { margin: 0; font-size: 13px; line-height: 1.8; color: var(--navy-2); }

/* ---- 五段旅程 ---- */

.journey__steps {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}

.journey__step {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  text-align: left;
  font-family: var(--sans);
  color: var(--navy-2);
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--r);
  cursor: pointer;
  transition: border-color 0.25s ease, background-color 0.25s ease, color 0.25s ease;
}

.journey__step:hover { border-color: var(--rule-strong); }
.journey__step.is-active { background: var(--navy); border-color: var(--navy); color: #fff; }

.journey__step i { font-style: normal; font-family: var(--latin); font-size: 11.5px; letter-spacing: 0.14em; color: var(--mist); }
.journey__step.is-active i { color: rgba(255, 255, 255, 0.6); }

.journey__step span { display: flex; flex-direction: column; gap: 3px; }
.journey__step b { font-size: 14px; font-weight: 600; }
.journey__step small { font-size: 11.5px; color: var(--mist); }
.journey__step.is-active small { color: rgba(255, 255, 255, 0.62); }

.journey__detail {
  margin-top: 14px;
  padding: clamp(20px, 2.4vw, 32px);
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--r);
}

.journey__scene { font-size: 12px; letter-spacing: 0.18em; color: var(--mist); }

.journey__detail h3 {
  margin: 10px 0;
  font-family: var(--serif);
  font-size: clamp(1.1rem, 1.7vw, 1.32rem);
  font-weight: 500;
  line-height: 1.45;
  color: var(--navy);
}

.journey__detail p { margin: 0; font-size: clamp(14px, 1.05vw, 15.5px); line-height: 1.95; color: var(--navy-2); }

/* ---- 四套理论 ---- */

.theorygrid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.theorycard {
  height: 100%;
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--r);
  transition: border-color 0.25s ease;
}

.theorycard[open] { border-color: var(--rule-strong); }

.theorycard summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}

.theorycard summary::-webkit-details-marker { display: none; }

.theorycard__no { flex: none; font-family: var(--latin); font-size: 11.5px; letter-spacing: 0.16em; color: var(--mist); }
.theorycard__head { display: flex; flex-direction: column; gap: 5px; flex: 1; }
.theorycard__head b { font-size: 15px; font-weight: 600; color: var(--navy); }
.theorycard__head small { font-size: 12.5px; line-height: 1.7; color: var(--mist); }
.theorycard__more { flex: none; font-size: 12px; color: var(--mist); }

.theorycard__body { padding: 0 20px 20px; }
.theorycard__desc { margin: 0 0 12px; font-size: 14px; line-height: 1.9; color: var(--navy-2); }
.theorycard__body ul { margin: 0; padding-left: 1.25em; }
.theorycard__body li { margin: 0 0 0.5em; font-size: 13.5px; line-height: 1.85; color: var(--navy-2); }

/* ---- 结语 ---- */

.doc-final {
  padding: clamp(48px, 8vh, 96px) 0 clamp(56px, 9vh, 110px);
  border-top: 1px solid var(--rule);
  text-align: center;
}

.doc-final__title {
  max-width: 30ch;
  margin: 0 auto clamp(24px, 4vh, 38px);
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2.4vw, 1.85rem);
  font-weight: 500;
  line-height: 1.55;
  letter-spacing: 0.01em;
}

.doc-final__flow {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin: 0 0 clamp(26px, 4vh, 40px);
}

.doc-final__flow span {
  padding: 8px 15px;
  border-radius: var(--r-pill);
  background: rgba(22, 35, 63, 0.05);
  font-size: 13px;
  color: var(--navy);
}

.doc-final__flow i { font-style: normal; color: var(--mist); }
.doc-final__actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin: 0; }

/* ---- 响应式 ---- */

@media (max-width: 1000px) {
  .doc-head,
  .tabs,
  .loopcard,
  .agent { grid-template-columns: minmax(0, 1fr); }

  .capgrid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .journey__steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .doc { padding: 0 22px; }
  .doc-section { padding: 44px 0; }

  .islgrid,
  .theorygrid,
  .capgrid,
  .journey__steps { grid-template-columns: minmax(0, 1fr); }

  .scatter__steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .tabpanel { flex-direction: column; gap: 10px; }
  .doc-hero__stats { gap: 26px; }
}

/* =========================================================================
   分页：相册（每页 4 张）与「我们的调查」文章列表（每页 5 条）
   每页条数写在容器的 data-per-page 上；只切换哪一页可见，
   页面本身依旧不滚动，只有一页时翻页条自动收起。
   ========================================================================= */

.pages {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-height: 0;
  margin-top: clamp(14px, 2.2vh, 26px);
}

.pages .pages__page {
  flex: 1;
  min-height: 0;
  margin-top: 0;
  /* 一页里的内容真的放不下时，让「这一页」自己滚，
     条目不会溢出去压到下面的翻页条上 */
  overflow-y: auto;
  overscroll-behavior: contain;
}

/* .gallery 与 .posts 都写了 display，会盖掉浏览器默认的 [hidden] { display: none } */
.pages__page[hidden] { display: none; }

/* 相册：两行平均分掉这一栏的高度，窗口变矮时图片跟着缩，不会叠在一起，
   也不会把下面的翻页条挤出去（原先按 4:3 定高，矮窗口下会溢出）。 */
.album .pages__page { grid-template-rows: repeat(2, minmax(0, 1fr)); }

/* 相册格交给行高决定尺寸，照片用 object-fit: cover 填满整格 */
.album .pages__page .slot { aspect-ratio: auto; }

/* 「我们的调查」这一栏一页要放下 5 条，行距比首页那份列表收一点，
   免得第 5 条总是压在翻页条边上；首页的列表不受影响。 */
#research .pages__page .post { padding-top: 15px; padding-bottom: 15px; }

.pager {
  display: flex;
  flex: none;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-top: clamp(10px, 1.4vh, 14px);
  padding-top: clamp(8px, 1.2vh, 11px);
  border-top: 1px solid var(--rule);
}

.pager[hidden] { display: none; }

.pager__btn {
  padding: 8px 17px;
  border: 1px solid var(--rule-strong);
  border-radius: var(--r-pill);
  background: transparent;
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--navy);
  cursor: pointer;
  transition: background-color 0.28s ease, color 0.28s ease, border-color 0.28s ease;
}

.pager__btn:hover:not(:disabled) {
  background: var(--navy);
  border-color: var(--navy);
  color: #fff;
}

.pager__btn:disabled { opacity: 0.32; cursor: default; }

.pager__status {
  margin: 0;
  min-width: 4.4em;
  text-align: center;
  font-family: var(--latin);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--mist);
}