/* OD-LAYOUT-PRIMITIVES v1 — structure only: display, flex/grid, overflow, wrapping, ratio, geometry.
   Put this @layer first; product CSS outside the layer wins ordinary layout rules.
   Native hidden and closed-dialog states take precedence over component display rules. */
@layer od-layout {
  [hidden]:not([hidden="until-found" i]) { display: none !important; }
  dialog:not([open]) { display: none !important; }

  :where(.od-stack,.od-row,.od-row-top,.od-cluster,.od-grid,.od-field,.od-stat,.od-cell,.od-tile) > :where(*) { min-width: 0; }

  .od-stack   { display: flex; flex-direction: column; gap: var(--od-gap, 8px); }
  .od-row     { display: flex; align-items: center; gap: var(--od-gap, 8px); }
  .od-row-top { display: flex; align-items: flex-start; gap: var(--od-gap, 8px); }
  .od-cluster { display: flex; flex-wrap: wrap; align-items: center; gap: var(--od-gap, 8px); }
  .od-fill    { flex: 1 1 0; min-width: 0; }
  .od-fixed   { flex: none; }
  .od-grid    { display: grid; gap: var(--od-gap, 12px); grid-template-columns: repeat(var(--od-cols, 3), minmax(0, 1fr)); }

  .od-stat, .od-field, .od-cell { display: grid; gap: var(--od-gap, 2px); }
  :where(.od-stat,.od-field,.od-cell) > :where(*) { display: block; }
  .od-tile { display: grid; grid-template-rows: auto 1fr; }
  :where(.od-tile) > :where(*) { display: block; }

  .od-media { display: block; width: 100%; height: auto; aspect-ratio: var(--od-ratio, auto); }
  .od-media-cover { object-fit: cover; }

  .od-icon { display: inline-block; inline-size: var(--od-icon-size, 1em); block-size: var(--od-icon-size, 1em); flex: none; }

  .od-truncate { display: block; max-width: 100%; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
  .od-clamp-2, .od-clamp-3 { display: -webkit-box; -webkit-box-orient: vertical; overflow: hidden; overflow-wrap: anywhere; }
  .od-clamp-2 { -webkit-line-clamp: 2; }
  .od-clamp-3 { -webkit-line-clamp: 3; }
  .od-lines-2 { min-height: calc(2 * 1.4em); }
  .od-nowrap  { white-space: nowrap; }
  .od-keep    { word-break: keep-all; overflow-wrap: anywhere; }

  .od-screen { display: grid; grid-template-rows: auto minmax(0, 1fr) auto; height: 100%; }
  .od-scroll { overflow-y: auto; overscroll-behavior: contain; min-height: 0; }

  .od-rail { display: flex; gap: var(--od-gap, 8px); overflow-x: auto; scroll-snap-type: x proximity; scrollbar-width: none;
             padding-inline: var(--od-rail-pad, 16px); scroll-padding-inline: var(--od-rail-pad, 16px); }
  .od-rail::-webkit-scrollbar { display: none; }
  :where(.od-rail) > :where(*) { flex: none; scroll-snap-align: start; }
  :where(.od-rail) > :where(:last-child) { margin-inline-end: var(--od-rail-pad, 16px); }

  .od-spacer { flex: none; visibility: hidden; pointer-events: none; }
  .od-touch  { min-width: 44px; min-height: 44px; }
}
:root [hidden]:where(:not([hidden="until-found" i])) { display: none; }
/* /OD-LAYOUT-PRIMITIVES v1 */

/* ============ 亿清关 · 政策详情页（与首页同一套视觉） ============ */
:root {
  --paper: #eef0ee; --paper-2: #e3e6e4; --bone: #f8f9f7;
  --ink: #223155; --ink-deep: #141d33; --ink-soft: #3a4668; --ink-mute: #535d78;
  --blue: #4f7fff; --blue-ink: #2f5fe0; --signal: #e8572a;
  --line: rgba(34, 49, 85, 0.22); --line-soft: rgba(34, 49, 85, 0.10);
  --on-dark: #f3f5fa; --on-dark-mute: #b7c0d6;
  --serif: 'Playfair Display', 'Noto Serif SC', 'Songti SC', 'STSong', serif;
  --serif-zh: 'Noto Serif SC', 'Songti SC', 'STSong', 'SimSun', serif;
  --sans: 'Inter Tight', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;
  --s1: 4px; --s2: 8px; --s3: 16px; --s4: 24px; --s5: 32px; --s6: 48px; --s7: 64px; --s8: 96px;
  --wrap: 1200px; --gutter: clamp(20px, 4vw, 56px); --nav-h: 72px;
  --ease-out: cubic-bezier(.2, .7, .2, 1); --ease-in: cubic-bezier(.5, 0, .75, 0);
  --dur-s: 200ms; --dur-m: 400ms; --reveal: 700ms;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 16px); }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 17px/1.75 var(--body); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
body::before {
  content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0; opacity: .5;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.13 0 0 0 0 0.19 0 0 0 0 0.33 0 0 0 .06 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
main, header, footer { position: relative; z-index: 1; }
a { color: inherit; }
img { max-width: 100%; }
:focus-visible { outline: 2px solid var(--blue-ink); outline-offset: 3px; }
::selection { background: var(--ink); color: var(--bone); }
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding-inline: var(--gutter); }
.skip { position: absolute; left: 16px; top: -60px; z-index: 100; background: var(--ink); color: var(--bone); padding: 8px 16px; }
.skip:focus { top: 16px; }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: var(--s2); min-height: 48px; padding: 0 var(--s4); font: 600 15px/1 var(--sans); text-decoration: none; border-radius: 999px; cursor: pointer; border: 1px solid var(--ink); transition: background var(--dur-s) var(--ease-out), color var(--dur-s) var(--ease-out); }
.btn-primary { background: var(--ink); color: var(--bone); }
.btn-ghost { background: transparent; color: var(--ink); }
.btn .od-icon { --od-icon-size: 18px; transition: transform var(--dur-s) var(--ease-out); }
@media (hover: hover) {
  .btn-primary:hover { background: var(--blue-ink); border-color: var(--blue-ink); color: #fff; }
  .btn-ghost:hover { background: var(--ink); color: var(--bone); }
  .btn:hover .od-icon { transform: translateX(3px); }
}

/* nav */
.nav { position: sticky; top: 0; z-index: 50; height: var(--nav-h); background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--line-soft); transition: transform var(--dur-m) var(--ease-out); }
.nav.is-hidden { transform: translateY(-100%); transition-timing-function: var(--ease-in); transition-duration: 260ms; }
.nav .wrap { height: 100%; display: flex; align-items: center; gap: var(--s4); }
.brand { display: flex; align-items: center; flex: none; }
.brand img { display: block; height: 40px; width: auto; aspect-ratio: 575 / 298; }
.nav-back { margin-left: auto; display: inline-flex; align-items: center; gap: 6px; font: 500 15px/1 var(--sans); text-decoration: none; min-height: 44px; }
.nav-back .od-icon { --od-icon-size: 18px; }
@media (hover: hover) { .nav-back:hover { color: var(--blue-ink); } }
.nav .btn { min-height: 44px; }
@media (max-width: 559px) { .nav .btn { display: none; } }
.scroll-progress { position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; pointer-events: none; }
.scroll-progress i { display: block; height: 100%; background: var(--blue); transform-origin: left; transform: scaleX(var(--sp, 0)); }

/* article head */
.crumbs { padding-top: var(--s5); font: 400 13px/1.4 var(--mono); letter-spacing: .04em; color: var(--ink-mute); }
.crumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.crumbs li + li::before { content: "/"; margin-right: 8px; color: var(--line); }
.crumbs a { text-decoration: none; border-bottom: 1px solid var(--line); }
@media (hover: hover) { .crumbs a:hover { color: var(--ink); border-color: var(--ink); } }
.art-head { padding-block: var(--s6) var(--s6); display: grid; gap: var(--s4); }
.art-meta { --od-gap: 12px; }
.art-date { font: 500 13px/1 var(--mono); letter-spacing: .06em; }
.pol-tag { font: 400 11px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; border-radius: 999px; padding: 6px 10px; border: 1px solid currentColor; }
.pol-tag[data-k="effective"] { color: var(--blue-ink); }
.pol-tag[data-k="proposed"] { color: #9a4a12; }
.pol-tag[data-k="trend"] { color: var(--ink-soft); }
.display { font-family: var(--serif-zh); font-weight: 900; color: var(--ink); line-height: 1.12; margin: 0; letter-spacing: -.01em; word-break: keep-all; overflow-wrap: anywhere; font-size: clamp(36px, 5.4vw, 76px); max-width: 16em; }
.display em { font-family: 'Playfair Display', var(--serif-zh); font-style: italic; font-weight: 500; color: var(--blue-ink); }
.display .dot { display: inline-block; width: .16em; height: .16em; border-radius: 50%; background: var(--blue); margin-left: .06em; }
.en-sub { margin: 0; font: italic 400 clamp(18px, 1.8vw, 24px)/1.4 var(--serif); color: var(--ink-soft); }
.summary { margin: 0; max-width: 40em; font-size: clamp(18px, 1.4vw, 20px); line-height: 1.75; color: var(--ink-soft); }

.art-hero { margin: 0 0 var(--s7); background: var(--bone); padding: 10px; rotate: -.6deg; box-shadow: 0 30px 60px -30px rgba(20, 29, 51, .4); overflow: hidden; }
.art-hero img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 7; object-fit: cover; }

/* body */
.art-grid { display: grid; gap: var(--s6); padding-bottom: var(--s8); }
@media (min-width: 1024px) { .art-grid { grid-template-columns: minmax(0, 1fr) 340px; column-gap: var(--s7); align-items: start; } }
.prose { max-width: 42em; }
.prose section + section { margin-top: var(--s6); }
.prose h2 { display: flex; align-items: baseline; gap: var(--s3); margin: 0 0 var(--s3); font: 700 clamp(24px, 2.4vw, 32px)/1.3 var(--serif-zh); padding-top: var(--s4); border-top: 1px solid var(--ink); }
.prose h2 .n { font: italic 500 18px/1 'Playfair Display', serif; color: var(--blue-ink); flex: none; }
.prose p { margin: 0 0 var(--s3); color: var(--ink-soft); }
.prose strong { color: var(--ink); }
.keys { list-style: none; margin: 0; padding: 0; counter-reset: k; display: grid; gap: var(--s3); }
.keys li { counter-increment: k; display: grid; grid-template-columns: 40px minmax(0, 1fr); gap: var(--s3); padding: var(--s3) 0; border-bottom: 1px solid var(--line-soft); color: var(--ink-soft); }
.keys li::before { content: counter(k, decimal-leading-zero); font: 500 13px/1.9 var(--mono); color: var(--blue-ink); }
.keys b { display: block; color: var(--ink); font: 700 17px/1.5 var(--serif-zh); margin-bottom: 4px; }
.callout { background: var(--bone); border-top: 2px solid var(--blue); padding: var(--s4); color: var(--ink-soft); margin-top: var(--s3); }
.callout p:last-child { margin-bottom: 0; }

/* aside */
.aside { display: grid; gap: var(--s4); }
@media (min-width: 1024px) { .aside { position: sticky; top: calc(var(--nav-h) + 24px); } }
.help { background: var(--ink); color: var(--on-dark); padding: var(--s5) var(--s4); display: grid; gap: var(--s3); }
.help .k { font: 400 11px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--on-dark-mute); }
.help h3 { margin: 0; font: 700 24px/1.35 var(--serif-zh); }
.help h3 em { font-family: 'Playfair Display', serif; font-style: italic; font-weight: 500; color: #8fb0ff; }
.help ul { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--s2); }
.help li { border-top: 1px solid rgba(243, 245, 250, .16); padding-top: var(--s2); }
.help li b { display: block; font: 600 16px/1.4 var(--sans); }
.help li span { display: block; font-size: 14px; line-height: 1.6; color: var(--on-dark-mute); }
.help .tel { font: 600 20px/1.2 var(--sans); color: var(--on-dark); text-decoration: none; white-space: nowrap; }
.help .btn-primary { background: var(--blue); border-color: var(--blue); color: #fff; justify-content: center; }
@media (hover: hover) { .help .btn-primary:hover { background: #fff; color: var(--ink); border-color: #fff; } }

/* sources + disclaimer */
.sources { margin-top: var(--s6); padding-top: var(--s4); border-top: 1px solid var(--ink); }
.sources h2 { font: 400 12px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-mute); margin: 0 0 var(--s3); padding: 0; border: 0; }
.sources ol { margin: 0; padding-left: 1.4em; display: grid; gap: var(--s2); font-size: 15px; }
.sources a { color: var(--ink); overflow-wrap: anywhere; }
.sources small { color: var(--ink-mute); }
.disclaimer { margin-top: var(--s4); font-size: 14px; color: var(--ink-mute); }

/* prev / next */
.pager { border-top: 1px solid var(--line); padding-block: var(--s6); display: grid; gap: var(--s4); }
@media (min-width: 768px) { .pager { grid-template-columns: 1fr 1fr; } }
.pager a { display: grid; gap: 6px; text-decoration: none; padding: var(--s4); background: var(--bone); border: 1px solid var(--line-soft); transition: border-color var(--dur-s) var(--ease-out), transform var(--dur-s) var(--ease-out); }
.pager a.next { text-align: right; }
.pager .lbl { display: block; font: 400 12px/1.4 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-mute); }
.pager .ttl { display: block; font: 700 19px/1.4 var(--serif-zh); }
@media (hover: hover) { .pager a:hover { border-color: var(--ink); transform: translateY(-3px); } .pager a:hover .ttl { color: var(--blue-ink); } }
.back-row { text-align: center; padding-bottom: var(--s7); }

/* footer */
.footer { background: var(--ink-deep); color: var(--on-dark); padding-block: var(--s6) var(--s4); }
.footer .wrap { display: flex; flex-wrap: wrap; gap: var(--s4); justify-content: space-between; align-items: center; }
.footer img { height: 40px; width: auto; aspect-ratio: 575 / 298; display: block; }
.footer p { margin: 0; font: 400 12px/1.6 var(--mono); letter-spacing: .04em; color: var(--on-dark-mute); }
.footer a { color: var(--on-dark); text-decoration: none; }

/* motion */
[data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity var(--reveal) var(--ease-out), transform var(--reveal) var(--ease-out); transition-delay: calc(var(--i, 0) * 60ms); }
[data-reveal].is-in { opacity: 1; transform: none; }
.no-js [data-reveal] { opacity: 1; transform: none; }
h1.display[data-reveal] { clip-path: inset(0 0 100% 0); transition: opacity var(--reveal) var(--ease-out), transform 900ms var(--ease-out), clip-path 900ms var(--ease-out); }
h1.display[data-reveal].is-in { clip-path: inset(-0.4em); }
.art-hero[data-reveal] img { clip-path: inset(100% 0 0 0); scale: 1.1; transition: clip-path 1100ms var(--ease-out) 150ms, scale 1400ms var(--ease-out) 150ms; }
.art-hero[data-reveal].is-in img { clip-path: inset(0); scale: 1; }
.no-js h1.display[data-reveal], .no-js .art-hero img { clip-path: none; scale: 1; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; transition-delay: 0ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
  h1.display[data-reveal], .art-hero[data-reveal] img { clip-path: none; scale: 1; }
}

/* LIST-PAGE-CSS v1 — 政策动态列表页 */
.list-head { padding-bottom: var(--s5); }
.list-tools { display: grid; gap: var(--s3); padding: var(--s4) 0; border-top: 1px solid var(--ink); }
@media (min-width: 880px) { .list-tools { grid-template-columns: minmax(0, 360px) minmax(0, 1fr); align-items: end; column-gap: var(--s5); } }
.search-field { display: grid; gap: 8px; }
.search-field label { font: 600 14px/1.4 var(--sans); }
.search-field label small { font: 400 11px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-mute); margin-left: 6px; }
.search-field input { width: 100%; min-height: 48px; padding: 12px 14px; font: 400 16px/1.4 var(--body); color: var(--ink); background: #fff; border: 1px solid var(--line); border-radius: 2px; }
.search-field input:focus { outline: none; border-color: var(--blue-ink); box-shadow: 0 0 0 3px rgba(79, 127, 255, .22); }
.policy-filter { --od-gap: 8px; }
.pf-btn { min-height: 44px; padding: 0 var(--s3); border-radius: 999px; border: 1px solid var(--line); background: transparent; color: var(--ink); font: 500 14px/1 var(--sans); cursor: pointer; transition: background var(--dur-s) var(--ease-out), color var(--dur-s) var(--ease-out); }
.pf-btn[aria-pressed="true"] { background: var(--ink); color: var(--bone); border-color: var(--ink); }
@media (hover: hover) { .pf-btn:not([aria-pressed="true"]):hover { border-color: var(--ink); } }
.list-count { margin: 0 0 var(--s4); font: 400 13px/1.4 var(--mono); color: var(--ink-mute); }
.month + .month { margin-top: var(--s6); }
.month-h { margin: 0 0 var(--s3); font: 700 clamp(26px, 3vw, 40px)/1.2 var(--serif-zh); }
.month-h .y { font: italic 500 1em/1 'Playfair Display', serif; color: var(--blue-ink); }
.policy-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--ink); }
.pol { position: relative; display: grid; gap: var(--s3); padding: var(--s5) 0; border-bottom: 1px solid var(--line); }
@media (min-width: 880px) { .pol { grid-template-columns: 160px minmax(0, 1fr) minmax(0, 300px); column-gap: var(--s6); align-items: start; } }
.pol-meta { --od-gap: 8px; }
.pol-date { font: 500 13px/1.4 var(--mono); letter-spacing: .04em; }
.pol .pol-tag { justify-self: start; }
.pol h3 { margin: 0; font: 700 clamp(20px, 2vw, 26px)/1.35 var(--serif-zh); transition: color var(--dur-s) var(--ease-out); }
.pol h3 .en-line { display: block; font: italic 400 15px/1.4 var(--serif); color: var(--ink-mute); margin-top: 6px; }
.pol p { margin: var(--s2) 0 0; color: var(--ink-soft); font-size: 16px; }
.pol-impact { background: var(--bone); border-top: 2px solid var(--blue); padding: var(--s3) var(--s4); font-size: 15px; color: var(--ink-soft); transition: background var(--dur-s) var(--ease-out); }
.pol-impact strong { display: block; font: 400 11px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink); margin-bottom: 6px; }
.pol-link { color: inherit; text-decoration: none; }
.pol-link::after { content: ""; position: absolute; inset: 0; z-index: 1; }
.pol-link:focus-visible { outline: none; }
.pol:has(.pol-link:focus-visible) { outline: 2px solid var(--blue-ink); outline-offset: 4px; }
.pol-more { display: block; margin-top: var(--s3); font: 600 14px/1 var(--sans); color: var(--ink); transition: transform var(--dur-s) var(--ease-out), color var(--dur-s) var(--ease-out); }
@media (hover: hover) {
  .pol:hover h3 { color: var(--blue-ink); }
  .pol:hover .pol-more { color: var(--blue-ink); transform: translateX(6px); }
  .pol:hover .pol-impact { background: #fff; }
}
.list-empty { padding: var(--s7) 0; text-align: center; border-top: 1px solid var(--ink); }
.list-empty h2 { margin: 0; font: 700 26px/1.3 var(--serif-zh); }
.list-empty p { color: var(--ink-soft); margin: var(--s3) auto var(--s4); max-width: 30em; }
.load-row { display: flex; justify-content: center; padding: var(--s6) 0 var(--s8); }