/*
Theme Name: HD Asia CNWP
Theme URI: http://betty:8100
Author: HD Asia
Description: 知性学院风格主题 — 首页轮播、老师介绍、课程介绍。本机资源，RWD 优先。
Version: 2.0.0
Requires at least: 6.0
Tested up to: 6.8
Requires PHP: 8.0
Text Domain: hdasia-cnwp
*/

/* ==========================================================================
   Design tokens — 知性 · 大方 · 学院
   ========================================================================== */
:root {
  --cnwp-ink: #1c2430;
  --cnwp-ink-soft: #3d4a5c;
  --cnwp-muted: #6b7789;
  --cnwp-line: #d8dee8;
  --cnwp-paper: #f6f3ec;
  --cnwp-paper-2: #efe9dc;
  --cnwp-card: #ffffff;
  --cnwp-navy: #1e3a5f;
  --cnwp-navy-deep: #13263f;
  --cnwp-gold: #9a7b4f;
  --cnwp-gold-soft: #c4a574;
  --cnwp-burgundy: #7a3b3b;
  --cnwp-radius: 6px;
  --cnwp-radius-lg: 12px;
  --cnwp-shadow: 0 10px 30px rgba(19, 38, 63, 0.08);
  --cnwp-shadow-sm: 0 2px 10px rgba(19, 38, 63, 0.06);
  --cnwp-max: 1120px;
  --cnwp-gutter: 1.25rem;
  --cnwp-fs-base: 1.125rem; /* 18px 偏大 */
  --cnwp-fs-sm: 1rem;
  --cnwp-fs-lg: 1.35rem;
  --cnwp-fs-xl: clamp(1.75rem, 2.5vw + 1rem, 2.5rem);
  --cnwp-fs-hero: clamp(2rem, 4vw + 1rem, 3.25rem);
  --cnwp-lh: 1.75;
  --cnwp-header-h: 4.25rem;
  /* 本机系统字体栈（简体优先），无外链字体 */
  --cnwp-font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Noto Sans SC", "Source Han Sans SC", "WenQuanYi Micro Hei",
    "Segoe UI", system-ui, sans-serif;
  --cnwp-font-serif: "Songti SC", "STSong", "SimSun", "Noto Serif SC",
    "Source Han Serif SC", Georgia, serif;
}

/* ==========================================================================
   Reset & base
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--cnwp-font);
  font-size: var(--cnwp-fs-base);
  line-height: var(--cnwp-lh);
  color: var(--cnwp-ink);
  background:
    linear-gradient(180deg, var(--cnwp-paper) 0%, #faf8f3 40%, var(--cnwp-paper) 100%);
  min-height: 100vh;
}

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

a {
  color: var(--cnwp-navy);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--cnwp-burgundy);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--cnwp-gold-soft);
  outline-offset: 2px;
}

h1, h2, h3, h4 {
  font-family: var(--cnwp-font-serif);
  font-weight: 600;
  line-height: 1.35;
  color: var(--cnwp-navy-deep);
  letter-spacing: 0.02em;
}

p {
  margin: 0 0 1em;
}

/* ==========================================================================
   Layout helpers
   ========================================================================== */
.site-wrap {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-main {
  flex: 1;
  width: min(100% - 2 * var(--cnwp-gutter), var(--cnwp-max));
  margin: 0 auto;
  padding: 1.75rem 0 3.5rem;
}

.section {
  margin-bottom: 3.25rem;
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--cnwp-line);
}

.section-title {
  margin: 0;
  font-size: var(--cnwp-fs-xl);
  position: relative;
  padding-left: 0.85rem;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.2em;
  bottom: 0.2em;
  width: 4px;
  background: linear-gradient(180deg, var(--cnwp-gold), var(--cnwp-navy));
  border-radius: 2px;
}

.section-more {
  font-size: var(--cnwp-fs-sm);
  color: var(--cnwp-muted);
  text-decoration: none;
  white-space: nowrap;
}

.section-more:hover {
  color: var(--cnwp-navy);
}

/* ==========================================================================
   Header / Nav — RWD
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--cnwp-line);
  box-shadow: var(--cnwp-shadow-sm);
}

.site-header__inner {
  width: min(100% - 2 * var(--cnwp-gutter), var(--cnwp-max));
  margin: 0 auto;
  min-height: var(--cnwp-header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-brand {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  text-decoration: none;
  color: inherit;
  min-width: 0;
}

.site-brand:hover {
  color: inherit;
}

.site-title {
  margin: 0;
  font-family: var(--cnwp-font-serif);
  font-size: clamp(1.15rem, 1.5vw + 0.9rem, 1.55rem);
  font-weight: 700;
  color: var(--cnwp-navy-deep);
  letter-spacing: 0.06em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-tagline {
  margin: 0;
  font-size: 0.8rem;
  color: var(--cnwp-muted);
  letter-spacing: 0.12em;
  text-transform: none;
}

.nav-toggle {
  display: none;
  appearance: none;
  border: 1px solid var(--cnwp-line);
  background: var(--cnwp-card);
  border-radius: var(--cnwp-radius);
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 1.25rem;
  height: 2px;
  background: var(--cnwp-navy);
  transition: transform 0.2s, opacity 0.2s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.15rem 0.35rem;
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 0.25rem;
}

.site-nav a {
  display: block;
  padding: 0.55rem 0.9rem;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--cnwp-ink-soft);
  text-decoration: none;
  border-radius: 999px;
  transition: background 0.2s, color 0.2s;
}

.site-nav a:hover,
.site-nav a.is-active {
  background: var(--cnwp-paper-2);
  color: var(--cnwp-navy-deep);
}

/* ==========================================================================
   Hero slider
   ========================================================================== */
.home-slider {
  position: relative;
  border-radius: var(--cnwp-radius-lg);
  overflow: hidden;
  background: var(--cnwp-navy-deep);
  min-height: clamp(280px, 48vw, 480px);
  box-shadow: var(--cnwp-shadow);
}

.home-slider__track {
  display: flex;
  transition: transform 0.55s cubic-bezier(0.4, 0, 0.2, 1);
  height: 100%;
}

.home-slider__slide {
  min-width: 100%;
  position: relative;
  min-height: clamp(280px, 48vw, 480px);
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  color: #fff;
  background-color: var(--cnwp-navy-deep);
  background-size: cover;
  background-position: center;
}

.home-slider__slide::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(19, 38, 63, 0.88) 0%, rgba(19, 38, 63, 0.55) 48%, rgba(19, 38, 63, 0.25) 100%),
    linear-gradient(0deg, rgba(19, 38, 63, 0.55) 0%, transparent 50%);
}

.home-slider__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  pointer-events: none;
}

.home-slider__content {
  position: relative;
  z-index: 1;
  padding: clamp(1.5rem, 4vw, 3rem);
  max-width: 40rem;
}

.home-slider__subtitle {
  font-family: var(--cnwp-font-serif);
  font-size: var(--cnwp-fs-hero);
  font-weight: 600;
  margin: 0 0 0.75rem;
  white-space: pre-line;
  color: #fff;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.25);
}

.home-slider__text {
  font-size: clamp(1.05rem, 1vw + 0.9rem, 1.25rem);
  opacity: 0.95;
  margin: 0 0 1.35rem;
  white-space: pre-line;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.92);
}

.home-slider__actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.home-slider__nav {
  position: absolute;
  inset: auto 0 1rem 0;
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  z-index: 2;
}

.home-slider__dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 0;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  padding: 0;
  transition: background 0.2s, transform 0.2s;
}

.home-slider__dot.is-active {
  background: #fff;
  transform: scale(1.15);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1.05rem;
  border: 2px solid transparent;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.15s;
  cursor: pointer;
  text-decoration: none;
  line-height: 1.3;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--cnwp-navy);
  color: #fff;
}

.btn-primary:hover {
  background: var(--cnwp-navy-deep);
  color: #fff;
}

.btn-gold {
  background: var(--cnwp-gold);
  color: #fff;
}

.btn-gold:hover {
  background: #826642;
  color: #fff;
}

.btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.85);
  color: #fff;
}

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

.btn-outline-dark {
  background: transparent;
  border-color: var(--cnwp-navy);
  color: var(--cnwp-navy);
}

.btn-outline-dark:hover {
  background: var(--cnwp-navy);
  color: #fff;
}

/* ==========================================================================
   Cards grid
   ========================================================================== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.35rem;
}

.card {
  background: var(--cnwp-card);
  border-radius: var(--cnwp-radius-lg);
  overflow: hidden;
  box-shadow: var(--cnwp-shadow-sm);
  border: 1px solid rgba(216, 222, 232, 0.8);
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.25s, transform 0.25s;
  height: 100%;
}

.card:hover {
  box-shadow: var(--cnwp-shadow);
  transform: translateY(-3px);
}

.card__media-wrap {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--cnwp-paper-2);
  overflow: hidden;
}

.card__media {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.card:hover .card__media {
  transform: scale(1.04);
}

.card__body {
  padding: 1.2rem 1.3rem 1.45rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card__meta {
  font-size: 0.95rem;
  color: var(--cnwp-gold);
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 0.4rem;
}

.card__title {
  margin: 0 0 0.55rem;
  font-size: 1.28rem;
}

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

.card__title a:hover {
  color: var(--cnwp-burgundy);
}

.card__excerpt {
  color: var(--cnwp-muted);
  font-size: 1.05rem;
  margin: 0 0 1.1rem;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__footer {
  margin-top: auto;
}

/* ==========================================================================
   Article list / single
   ========================================================================== */
.entry-content,
.article-card {
  background: var(--cnwp-card);
  border-radius: var(--cnwp-radius-lg);
  padding: clamp(1.25rem, 3vw, 2rem);
  box-shadow: var(--cnwp-shadow-sm);
  border: 1px solid rgba(216, 222, 232, 0.8);
}

.entry-title {
  font-size: var(--cnwp-fs-xl);
  margin: 0 0 0.75rem;
}

.entry-meta {
  color: var(--cnwp-muted);
  font-size: var(--cnwp-fs-sm);
  margin-bottom: 1.25rem;
}

.entry-content .wp-post-image,
.entry-featured {
  border-radius: var(--cnwp-radius);
  margin-bottom: 1.5rem;
  width: 100%;
  max-height: 420px;
  object-fit: cover;
}

.entry-content p,
.entry-content li {
  font-size: 1.15rem;
  line-height: 1.85;
}

.entry-content h2 {
  font-size: 1.55rem;
  margin: 1.75rem 0 0.75rem;
}

.entry-content h3 {
  font-size: 1.3rem;
  margin: 1.4rem 0 0.6rem;
}

.article-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.article-card {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 1.25rem;
  padding: 0;
  overflow: hidden;
  align-items: stretch;
}

.article-card__media {
  aspect-ratio: 4 / 3;
  object-fit: cover;
  width: 100%;
  height: 100%;
  min-height: 160px;
  background: var(--cnwp-paper-2);
}

.article-card__body {
  padding: 1.15rem 1.25rem 1.25rem 0;
  display: flex;
  flex-direction: column;
}

.article-card__body .card__title {
  font-size: 1.4rem;
}

.empty-state {
  background: var(--cnwp-paper-2);
  border-radius: var(--cnwp-radius-lg);
  padding: 1.75rem;
  color: var(--cnwp-muted);
  text-align: center;
  font-size: 1.1rem;
  border: 1px dashed var(--cnwp-line);
}

/* Pagination */
.nav-links,
.pagination {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-top: 2rem;
}

.nav-links a,
.nav-links span,
.page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  height: 2.5rem;
  padding: 0 0.75rem;
  border-radius: var(--cnwp-radius);
  background: var(--cnwp-card);
  border: 1px solid var(--cnwp-line);
  text-decoration: none;
  color: var(--cnwp-ink-soft);
  font-size: 1rem;
}

.nav-links .current,
.page-numbers.current {
  background: var(--cnwp-navy);
  border-color: var(--cnwp-navy);
  color: #fff;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--cnwp-navy-deep);
  color: rgba(255, 255, 255, 0.82);
  padding: 2.25rem var(--cnwp-gutter);
  margin-top: auto;
}

.site-footer__inner {
  width: min(100%, var(--cnwp-max));
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  justify-content: space-between;
  align-items: center;
}

.site-footer p {
  margin: 0;
  font-size: 1rem;
}

.site-footer a {
  color: var(--cnwp-gold-soft);
  text-decoration: none;
}

.site-footer a:hover {
  color: #fff;
}

/* ==========================================================================
   RWD breakpoints
   ========================================================================== */
@media (max-width: 960px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .article-card {
    grid-template-columns: 180px 1fr;
  }
}

@media (max-width: 720px) {
  :root {
    --cnwp-fs-base: 1.0625rem; /* 17px 手机仍偏大 */
    --cnwp-gutter: 1rem;
    --cnwp-header-h: 3.75rem;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: #fff;
    border-bottom: 1px solid var(--cnwp-line);
    box-shadow: var(--cnwp-shadow);
    padding: 0.5rem 1rem 1rem;
    display: none;
  }

  .site-nav.is-open {
    display: block;
  }

  .site-nav ul {
    flex-direction: column;
  }

  .site-nav a {
    padding: 0.85rem 1rem;
    border-radius: var(--cnwp-radius);
    font-size: 1.1rem;
  }

  .card-grid {
    grid-template-columns: 1fr;
    gap: 1.1rem;
  }

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

  .article-card__media {
    aspect-ratio: 16 / 9;
    max-height: 220px;
  }

  .article-card__body {
    padding: 1rem 1.15rem 1.25rem;
  }

  .home-slider__actions .btn {
    width: 100%;
  }

  .section {
    margin-bottom: 2.5rem;
  }

  .site-footer__inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 400px) {
  .home-slider__content {
    padding: 1.25rem;
  }

  .btn {
    font-size: 1rem;
    padding: 0.65rem 1.15rem;
  }
}

/* Prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}