/*
Theme Name: Cien Dental News
Theme URI: https://ciendental.cn/news/
Author: Cien Dental
Description: 慈恩齿科田厦起源店公告中心专用主题。
Version: 1.0.0
Requires at least: 6.7
Requires PHP: 8.0
Text Domain: cien-news
*/

:root {
  --color-primary: #0878d1;
  --color-primary-strong: #005aab;
  --color-accent: #23b7c8;
  --color-navy: #071f38;
  --color-navy-soft: #0c2b49;
  --color-ink: #10273c;
  --color-text: #3e5265;
  --color-muted: #6f8292;
  --color-white: #ffffff;
  --color-surface: #ffffff;
  --color-surface-soft: #eef6fb;
  --color-line: #d9e6ee;
  --font-sans: "Inter", "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-display: "Avenir Next", "Helvetica Neue", "PingFang SC", sans-serif;
  --page-width: 1240px;
  --page-gutter: clamp(1.25rem, 4vw, 3rem);
  --header-height: 80px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-float: 0 18px 55px rgb(7 31 56 / 0.12);
  --shadow-header: 0 1px 0 rgb(7 31 56 / 0.08);
  --ease-standard: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-fast: 220ms;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  color: var(--color-text);
  background: var(--color-surface);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

body.nav-open {
  overflow: hidden;
}

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

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  color: inherit;
  font: inherit;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1,
h2,
h3,
h4 {
  color: var(--color-ink);
  font-family: var(--font-display);
  letter-spacing: -0.035em;
  line-height: 1.18;
  text-wrap: balance;
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--color-accent) 75%, white);
  outline-offset: 4px;
}

.screen-reader-text,
.skip-link {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link:focus {
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  width: auto;
  height: auto;
  padding: 0.75rem 1rem;
  clip: auto;
  color: var(--color-white);
  background: var(--color-navy);
}

.page-shell {
  width: min(var(--page-width), calc(100% - (var(--page-gutter) * 2)));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  height: var(--header-height);
  background: rgb(255 255 255 / 0.94);
  box-shadow: var(--shadow-header);
  backdrop-filter: blur(18px);
}

.site-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.site-logo {
  position: relative;
  width: 148px;
  height: 56px;
  display: block;
  flex: 0 0 auto;
  overflow: hidden;
}

.site-logo img {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 214px;
  max-width: none;
  transform: translate(-50%, -50%);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 1.55vw, 1.5rem);
}

.site-nav a {
  position: relative;
  padding-block: 1.75rem;
  color: #31485c;
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  transition: color var(--duration-fast) ease;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 1.2rem;
  left: 0;
  height: 2px;
  content: "";
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--duration-fast) var(--ease-standard);
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--color-primary-strong);
}

.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-toggle {
  width: 44px;
  height: 44px;
  display: none;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-white);
}

.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after {
  width: 18px;
  height: 2px;
  display: block;
  margin: 4px auto;
  content: "";
  background: var(--color-navy);
}

/* News archive */
.news-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(5.5rem, 10vw, 8.5rem) 0 clamp(5rem, 8vw, 7.25rem);
  background:
    radial-gradient(circle at 84% 18%, rgb(35 183 200 / 0.18), transparent 30%),
    linear-gradient(135deg, #f5f9fc 0%, #eaf4fa 58%, #f9fcfe 100%);
}

.news-hero::after {
  position: absolute;
  right: -7rem;
  bottom: -12rem;
  width: 32rem;
  height: 32rem;
  border: 1px solid rgb(8 120 209 / 0.13);
  border-radius: 50%;
  content: "";
}

.news-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(18rem, 0.7fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: end;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0 0 1.25rem;
  color: var(--color-primary);
  font-size: 0.8125rem;
  font-weight: 750;
  letter-spacing: 0.14em;
  line-height: 1.2;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 28px;
  height: 2px;
  content: "";
  background: currentColor;
}

.news-hero h1 {
  max-width: 9em;
  margin-bottom: 0;
  font-size: clamp(3.25rem, 4.45vw, 4rem);
  font-weight: 650;
}

.news-hero__summary {
  max-width: 30rem;
  margin: 0;
  color: var(--color-muted);
  font-size: 1.125rem;
  line-height: 1.9;
  text-wrap: pretty;
}

.news-index {
  padding: clamp(5rem, 8vw, 7.5rem) 0 clamp(6.25rem, 10vw, 9rem);
}

.news-index__head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-line);
}

.news-index__head h2 {
  margin-bottom: 0;
  font-size: clamp(2.25rem, 3.25vw, 3rem);
  font-weight: 650;
}

.news-index__count {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
}

.news-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.news-card {
  display: grid;
  grid-template-columns: 9rem minmax(0, 1fr) minmax(15rem, 20rem);
  gap: clamp(1.5rem, 4vw, 4.5rem);
  align-items: center;
  padding-block: clamp(2.5rem, 5vw, 4rem);
  border-bottom: 1px solid var(--color-line);
}

.news-card__meta {
  align-self: start;
  display: grid;
  gap: 0.7rem;
  padding-top: 0.3rem;
  color: var(--color-muted);
  font-size: 0.8125rem;
  line-height: 1.5;
  font-variant-numeric: tabular-nums;
}

.news-card__category {
  color: var(--color-primary);
  font-weight: 700;
}

.news-card__title {
  margin: 0;
  font-size: clamp(1.65rem, 2.4vw, 2.2rem);
  font-weight: 650;
  line-height: 1.32;
}

.news-card__title a {
  transition: color var(--duration-fast) ease;
}

.news-card__title a:hover {
  color: var(--color-primary);
}

.news-card__excerpt {
  max-width: 42rem;
  margin: 1.15rem 0 0;
  color: var(--color-muted);
  line-height: 1.9;
  text-wrap: pretty;
}

.news-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-top: 1.4rem;
  color: var(--color-primary);
  font-size: 0.9rem;
  font-weight: 700;
}

.news-card__link::after {
  content: "→";
  transition: transform var(--duration-fast) var(--ease-standard);
}

.news-card__link:hover::after {
  transform: translateX(4px);
}

.news-card__media {
  aspect-ratio: 16 / 10;
  display: block;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #dfeef6, #f7fbfd);
}

.news-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 520ms var(--ease-standard);
}

.news-card__media:hover img {
  transform: scale(1.035);
}

.news-card__media--placeholder {
  position: relative;
}

.news-card__media--placeholder img {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 290px;
  max-width: none;
  height: auto;
  object-fit: initial;
  transform: translate(-50%, -50%);
}

.pagination {
  margin-top: 3.5rem;
}

.pagination .nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.pagination .page-numbers {
  min-width: 42px;
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  color: var(--color-ink);
  background: var(--color-white);
  font-size: 0.875rem;
  transition: color var(--duration-fast) ease, border-color var(--duration-fast) ease, background var(--duration-fast) ease;
}

.pagination .page-numbers.current,
.pagination .page-numbers:hover {
  color: var(--color-white);
  border-color: var(--color-primary);
  background: var(--color-primary);
}

.empty-state {
  padding: 5rem 0;
  color: var(--color-muted);
}

/* Single article */
.article-hero {
  padding: clamp(4.5rem, 8vw, 7.5rem) 0 clamp(3rem, 6vw, 5rem);
  background: linear-gradient(180deg, #f3f8fb, #ffffff);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 2.25rem;
  color: var(--color-muted);
  font-size: 0.8125rem;
}

.breadcrumb a {
  color: var(--color-primary);
}

.article-header {
  max-width: 940px;
}

.article-header h1 {
  margin-bottom: 1.65rem;
  font-size: clamp(2.6rem, 5vw, 4rem);
  font-weight: 650;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  color: var(--color-muted);
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
}

.article-meta a {
  color: var(--color-primary);
}

.article-featured {
  width: min(1120px, calc(100% - (var(--page-gutter) * 2)));
  max-height: 680px;
  margin: 0 auto clamp(3.5rem, 7vw, 6rem);
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--color-surface-soft);
}

.article-featured img {
  width: 100%;
  max-height: 680px;
  object-fit: cover;
}

.article-layout {
  width: min(860px, calc(100% - (var(--page-gutter) * 2)));
  margin-inline: auto;
}

.article-content {
  padding-bottom: clamp(4.5rem, 8vw, 7rem);
  color: #293f52;
  font-size: clamp(1.0625rem, 1.4vw, 1.15rem);
  line-height: 2;
  overflow-wrap: anywhere;
}

.article-content > * {
  max-width: 100%;
}

.article-content p,
.article-content ul,
.article-content ol,
.article-content blockquote,
.article-content figure,
.article-content table {
  margin-top: 0;
  margin-bottom: 1.65rem;
}

.article-content h1,
.article-content h2 {
  margin: 3.2rem 0 1.25rem;
  font-size: clamp(1.8rem, 3vw, 2.35rem);
  font-weight: 650;
}

.article-content h3 {
  margin: 2.4rem 0 1rem;
  font-size: clamp(1.4rem, 2.4vw, 1.75rem);
  font-weight: 650;
}

.article-content h4 {
  margin: 2rem 0 0.8rem;
  font-size: 1.2rem;
}

.article-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.article-content blockquote {
  padding: 1.5rem 1.75rem;
  border-left: 3px solid var(--color-accent);
  color: var(--color-ink);
  background: var(--color-surface-soft);
}

.article-content img {
  border-radius: var(--radius-md);
}

.article-content figcaption {
  margin-top: 0.65rem;
  color: var(--color-muted);
  font-size: 0.8125rem;
  text-align: center;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.article-content th,
.article-content td {
  padding: 0.9rem 1rem;
  border: 1px solid var(--color-line);
  text-align: left;
}

.article-content th {
  color: var(--color-ink);
  background: var(--color-surface-soft);
}

.article-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  padding: 2rem 0 clamp(5rem, 8vw, 7.5rem);
  border-top: 1px solid var(--color-line);
}

.article-actions a {
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.25rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  color: var(--color-ink);
  font-size: 0.9375rem;
  font-weight: 650;
  transition: color var(--duration-fast) ease, border-color var(--duration-fast) ease, transform var(--duration-fast) var(--ease-standard);
}

.article-actions a:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.article-cta {
  margin-bottom: clamp(5rem, 8vw, 7rem);
  padding: clamp(2.25rem, 5vw, 4rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2rem;
  align-items: center;
  border-radius: var(--radius-lg);
  color: rgb(255 255 255 / 0.76);
  background: var(--color-navy);
}

.article-cta h2 {
  margin: 0 0 0.8rem;
  color: var(--color-white);
  font-size: clamp(1.7rem, 3vw, 2.25rem);
}

.article-cta p {
  max-width: 42rem;
  margin: 0;
}

.article-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.75rem 1.5rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--color-white);
  background: var(--color-primary);
  font-size: 0.9375rem;
  font-weight: 650;
  line-height: 1;
  transition: transform var(--duration-fast) var(--ease-standard), background-color var(--duration-fast) ease;
}

.button:hover {
  color: var(--color-white);
  background: var(--color-primary-strong);
  transform: translateY(-2px);
}

.button--light {
  color: var(--color-navy);
  background: var(--color-white);
}

.button--light:hover {
  color: var(--color-navy);
  background: #eaf4fa;
}

/* Footer */
.site-footer {
  color: rgb(255 255 255 / 0.65);
  background: #04182b;
}

.site-footer__main {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(12rem, 0.7fr) minmax(15rem, 0.9fr);
  gap: clamp(3rem, 7vw, 7rem);
  padding-block: 5.5rem 4.5rem;
}

.site-footer__logo {
  position: relative;
  width: 156px;
  height: 58px;
  overflow: hidden;
  filter: brightness(0) invert(1);
  opacity: 0.92;
}

.site-footer__logo img {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 220px;
  max-width: none;
  transform: translate(-50%, -50%);
}

.site-footer__legal-name {
  margin: 1.5rem 0 0;
  color: var(--color-white);
  font-size: 1.05rem;
  font-weight: 650;
}

.site-footer__description {
  max-width: 39rem;
  margin: 1rem 0 0;
  font-size: 0.875rem;
  line-height: 1.9;
}

.site-footer__heading {
  margin: 0;
  color: var(--color-white);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.site-footer__links,
.site-footer__contact {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.2rem;
}

.site-footer__links a,
.site-footer__contact a {
  font-size: 0.875rem;
  line-height: 1.7;
  transition: color var(--duration-fast) ease;
}

.site-footer__links a:hover,
.site-footer__contact a:hover,
.site-footer__bottom a:hover {
  color: var(--color-white);
}

.site-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 1.5rem;
  border-top: 1px solid rgb(255 255 255 / 0.12);
  font-size: 0.75rem;
}

/* 404 */
.not-found {
  min-height: 60vh;
  display: grid;
  place-items: center;
  padding: 6rem 0;
  text-align: center;
}

.not-found h1 {
  margin-bottom: 1rem;
  font-size: clamp(3rem, 8vw, 6rem);
}

.not-found p {
  margin-bottom: 2rem;
  color: var(--color-muted);
}

@media (max-width: 1120px) {
  .site-logo {
    width: 132px;
  }

  .site-nav {
    gap: 0.9rem;
  }

  .site-nav a {
    font-size: 0.8125rem;
  }

  .news-card {
    grid-template-columns: 7rem minmax(0, 1fr) minmax(13rem, 17rem);
    gap: 2rem;
  }
}

@media (max-width: 900px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-height) 0 auto;
    max-height: 0;
    display: grid;
    gap: 0;
    overflow: hidden;
    background: var(--color-white);
    box-shadow: var(--shadow-float);
    transition: max-height 400ms var(--ease-standard);
  }

  .site-nav.is-open {
    max-height: calc(100vh - var(--header-height));
    overflow: auto;
  }

  .site-nav a {
    padding: 1.1rem var(--page-gutter);
    border-bottom: 1px solid var(--color-line);
    font-size: 1rem;
  }

  .site-nav a::after {
    display: none;
  }

  .news-hero__inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .news-card {
    grid-template-columns: minmax(0, 1fr) minmax(12rem, 16rem);
  }

  .news-card__meta {
    grid-column: 1 / -1;
    display: flex;
    gap: 1rem;
    padding: 0;
  }

  .article-cta {
    grid-template-columns: 1fr;
  }

  .site-footer__main {
    grid-template-columns: 1fr 1fr;
  }

  .site-footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  :root {
    --header-height: 72px;
  }

  .site-logo {
    width: 128px;
    height: 52px;
  }

  .news-hero {
    padding-top: 4.5rem;
  }

  .news-hero h1 {
    font-size: clamp(2.75rem, 14vw, 3.5rem);
  }

  .news-index__head {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.75rem;
  }

  .news-card {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding-block: 2.5rem;
  }

  .news-card__media {
    grid-row: 2;
  }

  .news-card__content {
    grid-row: 3;
  }

  .news-card__title {
    font-size: 1.65rem;
  }

  .article-header h1 {
    font-size: clamp(2.25rem, 11vw, 3rem);
  }

  .article-featured {
    width: calc(100% - 2rem);
    border-radius: var(--radius-md);
  }

  .article-actions {
    grid-template-columns: 1fr;
  }

  .article-cta__links {
    display: grid;
  }

  .site-footer__main {
    grid-template-columns: 1fr;
  }

  .site-footer__brand {
    grid-column: auto;
  }

  .site-footer__bottom {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}