/* ==========================================================================
   导航站样式（依赖 tokens.css）— 法律编辑风 · 沉稳专业
   ========================================================================== */

/* .visually-hidden 已移至共用 tokens.css */

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--paper); /* 回退：不支持 color-mix 的浏览器 */
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--hairline);
}
.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.4rem 0.8rem;
  min-height: 60px;
  padding-block: 0.4rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
}
.brand__mark {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  color: var(--paper);
  background: var(--ink-panel);
  width: 38px; height: 38px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  box-shadow: inset 0 0 0 1px var(--amber-deep);
}
.topbar__nav { display: flex; align-items: center; gap: 0.55rem; }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__title {
  font-family: var(--font-serif);
  font-size: 1.12rem;
  font-weight: 600;
  color: var(--ink);
}
.brand__sub {
  font-size: 0.62rem;
  letter-spacing: 0.32em;
  color: var(--ink-mute);
  margin-top: 2px;
}

/* ---------- 按钮 ---------- */
.btn-ghost,
.btn-solid {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  border-radius: 999px;
  transition: background var(--dur) var(--ease),
              color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}
.btn-ghost {
  font-size: 0.92rem;
  padding: 0.5rem 1.1rem;
  color: var(--amber-deep);
  border: 1px solid var(--hairline-strong);
  background: var(--card);
}
.btn-ghost:hover {
  color: var(--paper);
  background: var(--amber-deep);
  border-color: var(--amber-deep);
}
.btn-ghost span { transition: transform var(--dur) var(--ease); }
.btn-ghost:hover span { transform: translateX(3px); }

.btn-solid {
  font-size: 1rem;
  padding: 0.85rem 1.7rem;
  color: var(--paper);
  background: var(--amber-deep);
  border: 1px solid var(--amber-deep);
  box-shadow: var(--shadow-2);
}
.btn-solid:hover {
  background: var(--ink-panel);
  border-color: var(--ink-panel);
  transform: translateY(-1px);
}
.btn-solid span { transition: transform var(--dur) var(--ease); }
.btn-solid:hover span { transform: translateX(4px); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-block: clamp(1rem, 0.7rem + 1.4vw, 1.8rem) clamp(1.4rem, 1rem + 2vw, 2.4rem);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 75% at 78% 8%, rgba(180, 83, 9, 0.07), transparent 60%),
    radial-gradient(50% 60% at 8% 100%, rgba(33, 29, 26, 0.05), transparent 55%);
  pointer-events: none;
}
.hero > .shell { position: relative; }

/* ---------- 搜索框（搜狗） ---------- */
.search {
  margin: 0 auto;
  display: flex;
  align-items: stretch;
  max-width: 720px;
  background: var(--card);
  border: 1px solid var(--hairline-strong);
  border-radius: 14px;
  box-shadow: var(--shadow-1);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.search:focus-within {
  border-color: var(--amber);
  box-shadow: 0 0 0 4px rgba(180, 83, 9, 0.12);
}
.search__engine {
  -webkit-appearance: none;
  appearance: none;
  border: 0;
  border-right: 1px solid var(--hairline);
  border-radius: 0;
  padding: 0 2.1rem 0 1.1rem;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--amber-deep);
  background-color: var(--paper-2);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%2378350f' stroke-width='2'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 9px;
  cursor: pointer;
  white-space: nowrap;
}
.search__engine:focus-visible { outline: 2px solid var(--amber); outline-offset: -2px; }
.search__input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  padding: 1rem 1.1rem;
  font-size: 16px; /* iOS 聚焦不缩放（<16px 会触发自动放大） */
  font-family: var(--font-sans);
  color: var(--ink);
  background: transparent;
  -webkit-appearance: none;
  appearance: none;
  border-radius: 0;
}
.search__input::placeholder { color: var(--ink-mute); }
.search__btn {
  border: 0;
  cursor: pointer;
  padding-inline: 1.7rem;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-sans);
  color: var(--paper);
  background: var(--amber-deep);
  transition: background var(--dur) var(--ease);
}
.search__btn:hover { background: var(--ink-panel); }

/* 显隐工具类（站内秒筛） */
.is-hidden { display: none !important; }

/* ---------- 站内秒筛 ---------- */
.nav-filter {
  max-width: 720px;
  margin: 0.85rem auto 0;
}
.nav-filter__input {
  width: 100%;
  border: 1px solid var(--hairline-strong);
  border-radius: 11px;
  background: var(--card);
  padding: 0.7rem 1rem;
  font-size: 16px; /* iOS 聚焦不缩放 */
  font-family: var(--font-sans);
  color: var(--ink);
  outline: 0;
  -webkit-appearance: none;
  appearance: none;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.nav-filter__input::placeholder { color: var(--ink-mute); }
.nav-filter__input:focus {
  border-color: var(--amber);
  box-shadow: 0 0 0 3px rgba(180, 83, 9, 0.12);
}
.nav-filter__count {
  display: block;
  margin-top: 0.4rem;
  text-align: right;
  font-size: 0.8rem;
  color: var(--amber-deep);
  min-height: 1em;
}

/* ---------- 常用直达（localStorage） ---------- */
.frequent { padding-block: clamp(0.8rem, 0.5rem + 1.2vw, 1.4rem) 0; }
.freq-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.7rem;
}
.freq-clear {
  font: inherit;
  font-size: 0.78rem;
  color: var(--ink-soft);
  background: none;
  border: 0;
  cursor: pointer;
  padding: 0.1rem 0.3rem;
  transition: color var(--dur) var(--ease);
}
.freq-clear:hover { color: var(--amber-deep); text-decoration: underline; }
.freq-row { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.freq-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.42rem 0.95rem;
  border: 1px solid var(--hairline-strong);
  border-radius: 999px;
  background: var(--card);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.freq-chip:hover { border-color: var(--amber); transform: translateY(-1px); }
.freq-chip__name { font-weight: 600; font-size: 0.9rem; color: var(--ink); }
.freq-chip:hover .freq-chip__name { color: var(--amber-deep); }

/* ---------- 资讯高亮带（深墨面板） ---------- */
.featured { padding-block: clamp(0.8rem, 0.5rem + 1.3vw, 1.4rem) clamp(1.2rem, 0.9rem + 1.6vw, 2rem); }
.featured__inner {
  background:
    linear-gradient(180deg, var(--ink-panel), var(--ink-panel-2));
  color: var(--paper);
  border-radius: 18px;
  padding: clamp(1.3rem, 1rem + 1.5vw, 2rem);
  box-shadow: var(--shadow-2);
  position: relative;
}
.featured__inner::before {
  content: "";
  position: absolute;
  left: 0; top: 22px; bottom: 22px;
  width: 3px;
  background: var(--amber);
  border-radius: 3px;
}
.eyebrow--on-dark { color: var(--amber-bright); }
.featured__title {
  color: var(--paper);
  font-size: var(--fs-h2);
  margin-top: 0.5rem;
}
.featured__list {
  margin-top: 1.1rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 210px), 1fr));
  gap: 0.7rem;
}
.featured__list a {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 0.85rem 1rem;
  border: 1px solid rgba(250, 248, 244, 0.16);
  border-radius: 10px;
  background: rgba(250, 248, 244, 0.04);
  transition: background var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}
.featured__list a:hover {
  background: rgba(224, 144, 47, 0.16);
  border-color: var(--amber-bright);
  transform: translateY(-2px);
}
.featured__name { font-weight: 600; font-size: 1rem; }
.featured__note { font-size: 0.8rem; color: rgba(250, 248, 244, 0.62); }

/* ---------- 分类区 ---------- */
.cats { padding-bottom: clamp(1.4rem, 1rem + 2vw, 2.4rem); }
.cat { padding-block: clamp(1rem, 0.75rem + 1.4vw, 1.7rem); }
.cat + .cat { border-top: 1px solid var(--hairline); }
.cat__head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1rem;
}
.cat__index {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--amber-deep);
  font-variant-numeric: tabular-nums;
}
.cat__title {
  font-size: var(--fs-h2);
  white-space: nowrap;
}
.cat__rule {
  flex: 1;
  height: 1px;
  background: var(--hairline-strong);
  transform: translateY(-4px);
}
.cat__count {
  font-size: 0.78rem;
  color: var(--ink-mute);
  letter-spacing: 0.08em;
  transform: translateY(-4px);
}
.cat__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(218px, 1fr));
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 218px), 1fr));
  gap: 0.45rem;
}
.link-chip {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 0.55rem 0.95rem 0.55rem 1.05rem;
  background: var(--card);
  border: 1px solid var(--hairline);
  border-radius: 10px;
  position: relative;
  transition: border-color var(--dur) var(--ease),
              transform var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}
.link-chip::before {
  content: "";
  position: absolute;
  left: 0; top: 14%;
  width: 3px; height: 0;
  background: var(--amber);
  border-radius: 3px;
  transition: height var(--dur) var(--ease);
}
.link-chip:hover {
  border-color: var(--hairline-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-1);
}
.link-chip:hover::before { height: 72%; }
.link-chip__name {
  font-weight: 600;
  color: var(--ink);
  transition: color var(--dur) var(--ease);
}
.link-chip:hover .link-chip__name { color: var(--amber-deep); }
.link-chip__note { font-size: 0.78rem; color: var(--ink-mute); }

/* ---------- 设为首页 toast ---------- */
#home-tip {
  position: fixed;
  bottom: calc(1.4rem + env(safe-area-inset-bottom, 0px));
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  max-width: min(660px, calc(100vw - 2rem - env(safe-area-inset-left, 0px) - env(safe-area-inset-right, 0px)));
  padding: 0.72rem 1rem;
  background: var(--ink);
  border-radius: 10px;
  box-shadow: var(--shadow-2);
  font-size: 0.84rem;
  z-index: 9999;
  animation: tip-in .18s var(--ease) both;
}
@keyframes tip-in {
  from { opacity: 0; transform: translateX(-50%) translateY(10px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0);    }
}
.home-tip__txt  { flex: 1; min-width: 0; color: var(--cream, #f5f0e8); line-height: 1.5; }
.home-tip__url  {
  display: inline;
  font-family: monospace;
  font-size: 0.78rem;
  background: rgba(255,255,255,.12);
  padding: 0.1rem 0.38rem;
  border-radius: 4px;
  word-break: break-all;
  user-select: all;
  margin-left: 0.25rem;
}
.home-tip__copy {
  flex: none;
  padding: 0.32rem 0.8rem;
  background: var(--amber);
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.82rem;
  white-space: nowrap;
  transition: background var(--dur) var(--ease);
}
.home-tip__copy:hover { background: var(--amber-deep); }
.home-tip__close {
  flex: none;
  background: none;
  border: none;
  color: rgba(255,255,255,.6);
  font-size: 1.15rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 0.15rem;
  transition: color var(--dur) var(--ease);
}
.home-tip__close:hover { color: #fff; }

/* ---------- 页脚 ---------- */
.footer {
  border-top: 1px solid var(--hairline);
  background: var(--paper-2);
}
.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  padding-block: 1.8rem;
}
.footer__brand {
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--ink);
}
.footer__meta { font-size: 0.85rem; color: var(--ink-soft); }
.footer__meta a { color: var(--amber-deep); font-weight: 600; }
.footer__meta a:hover { text-decoration: underline; }

/* 免责声明（首页底部，克制低调） */
.footer__disclaimer {
  border-top: 1px solid var(--hairline);
  padding-block: 0.9rem 1.1rem;
}
.footer__disclaimer-text {
  max-width: 90ch;
  margin-inline: auto;
  text-align: center;
  font-size: 0.7rem;
  line-height: 1.7;
  color: var(--ink-mute);
}
.footer__disclaimer-tag {
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--ink-soft);
  letter-spacing: 0.1em;
  margin-right: 0.45rem;
}
.footer__disclaimer-tag::after {
  content: "·";
  margin-left: 0.45rem;
  color: var(--hairline-strong);
}

/* ---------- 顶部实用工具条（hao123 风，编辑风克制适配） ---------- */
.util {
  background: var(--paper-2);
  border-bottom: 1px solid var(--hairline);
  font-size: 0.82rem;
}
.util__inner {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0.5rem;
  padding-block: 0.6rem;
}
.util__left {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem 0.85rem;
  color: var(--ink-soft);
}
.util__home {
  font: inherit;
  cursor: pointer;
  color: var(--amber-deep);
  background: var(--card);
  border: 1px solid var(--hairline-strong);
  border-radius: 999px;
  padding: 0.18rem 0.8rem;
  margin-right: auto;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.util__home:hover { background: var(--amber-deep); color: var(--paper); border-color: var(--amber-deep); }
.util__divider { display: none; }
.util__when { display: inline-flex; align-items: center; gap: 0.55rem; }
.util__dot { color: var(--ink-mute); }
.util__lunar { color: var(--ink); }
.util__weather { color: var(--amber-deep); font-weight: 600; }
.util__weather:hover { text-decoration: underline; }
.util__links {
  align-self: stretch;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.35rem 0.5rem;
  padding-top: 0.45rem;
  border-top: 1px solid var(--hairline);
}
.util__links a {
  color: var(--ink-soft);
  padding: 0.14rem 0.75rem;
  border-radius: 999px;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.util__links a:hover { color: var(--amber-deep); background: var(--card); }

/* 窄屏：两端对齐会让换行行距过散，回退为居中 */
@media (max-width: 720px) {
  .util__home { margin-right: 0; }
  .util__left { justify-content: center; }
  .util__links { justify-content: center; }
}

/* ---------- AI 工具行 ---------- */
.ai-row {
  margin-top: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem;
}
.ai-chip {
  display: inline-flex;
  align-items: baseline;
  gap: 0.28rem;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--hairline-strong);
  border-radius: 999px;
  background: var(--card);
  white-space: nowrap;
  transition: border-color var(--dur) var(--ease),
              color var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}
.ai-chip:hover { border-color: var(--amber); transform: translateY(-1px); }
.ai-chip__name { font-weight: 600; color: var(--ink); font-size: 0.84rem; }
.ai-chip:hover .ai-chip__name { color: var(--amber-deep); }
.ai-chip__note { font-size: 0.68rem; color: var(--ink-mute); }
.ai-chip__note::before {
  content: "·";
  margin-right: 0.28rem;
  color: var(--hairline-strong);
}

@media (max-width: 560px) {
  .search { flex-wrap: wrap; }
  .search__engine { padding-block: 0.8rem; }
  .search__btn { width: 100%; padding-block: 0.85rem; }
  .cat__title { white-space: normal; }
  .brand__sub { display: none; }            /* 小屏隐藏装饰性副标，避免顶栏拥挤 */
  .topbar__nav { gap: 0.4rem; }
  .btn-ghost { font-size: 0.82rem; padding: 0.4rem 0.8rem; }
}