/*
Theme Name: AideNote Official
Theme URI: https://www.aidenote.cn/
Author: 上海誓隆网络科技有限公司
Description: 艾德智能笔记官方网站主题，包含产品展示、场景、版本、企业方案与内容页面。
Version: 3.1.0
Text Domain: aidenote
*/

:root {
  --blue: #2684ff;
  --blue-dark: #075bea;
  --blue-ink: #173b72;
  --ink: #101828;
  --muted: #667085;
  --line: #e5eaf2;
  --surface: #f6f9fe;
  --surface-blue: #eef5ff;
  --white: #fff;
  --radius: 20px;
  --shadow: 0 18px 50px rgba(32, 82, 149, 0.1);
  --container: 1200px;
}

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

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

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

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

a {
  color: var(--blue-dark);
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

.container {
  width: min(calc(100% - 48px), var(--container));
  margin-inline: auto;
}

.container.narrow {
  max-width: 880px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 9999;
  padding: 10px 16px;
  color: var(--white);
  background: var(--ink);
  border-radius: 8px;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: 76px;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(222, 229, 239, 0.8);
  backdrop-filter: saturate(160%) blur(18px);
  transition: box-shadow 0.25s ease, height 0.25s ease;
}

.site-header.is-scrolled {
  box-shadow: 0 8px 30px rgba(16, 24, 40, 0.08);
}

.header-container {
  width: min(calc(100% - 48px), 1320px);
  height: 100%;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.site-branding {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
}

.site-branding img {
  width: auto;
  height: 38px;
}

.primary-navigation {
  display: flex;
  align-items: center;
  gap: 30px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.site-nav a {
  position: relative;
  display: inline-flex;
  padding: 26px 0 24px;
  color: #344054;
  font-size: 15px;
  font-weight: 600;
}

.site-nav a::after {
  content: "";
  position: absolute;
  right: 50%;
  bottom: 16px;
  left: 50%;
  height: 2px;
  background: var(--blue);
  border-radius: 999px;
  transition: left 0.2s ease, right 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.active,
.site-nav a[aria-current="page"] {
  color: var(--blue-dark);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav a.active::after,
.site-nav a[aria-current="page"]::after {
  right: 0;
  left: 0;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 20px;
  color: var(--white);
  background: linear-gradient(135deg, #39a3ff, #1467f2);
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(20, 103, 242, 0.2);
  font-size: 14px;
  font-weight: 700;
}

.header-cta:hover {
  color: var(--white);
  transform: translateY(-1px);
}

.menu-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 0 9px 12px;
  color: var(--ink);
  background: transparent;
  border: 0;
  cursor: pointer;
}

.menu-toggle-label {
  font-size: 14px;
  font-weight: 700;
}

.menu-toggle-icon {
  position: relative;
  width: 24px;
  height: 18px;
}

.menu-toggle-icon i {
  position: absolute;
  right: 0;
  width: 24px;
  height: 2px;
  background: currentColor;
  border-radius: 999px;
  transition: transform 0.2s ease, top 0.2s ease, opacity 0.2s ease;
}

.menu-toggle-icon i:nth-child(1) { top: 1px; }
.menu-toggle-icon i:nth-child(2) { top: 8px; }
.menu-toggle-icon i:nth-child(3) { top: 15px; }

.menu-toggle[aria-expanded="true"] .menu-toggle-icon i:nth-child(1) {
  top: 8px;
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-icon i:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] .menu-toggle-icon i:nth-child(3) {
  top: 8px;
  transform: rotate(-45deg);
}

.page-hero {
  position: relative;
  isolation: isolate;
  min-height: 530px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 82% 28%, rgba(74, 156, 255, 0.2), transparent 26%),
    radial-gradient(circle at 15% 14%, rgba(105, 190, 255, 0.18), transparent 26%),
    linear-gradient(150deg, #f9fcff 0%, #edf5ff 52%, #f7fbff 100%);
}

.page-hero::before,
.page-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  border: 1px solid rgba(91, 151, 240, 0.22);
  border-radius: 50%;
}

.page-hero::before {
  width: 600px;
  height: 600px;
  right: -220px;
  top: -250px;
}

.page-hero::after {
  width: 340px;
  height: 340px;
  right: 6%;
  bottom: -230px;
}

.page-hero-glow {
  position: absolute;
  top: 50%;
  right: 12%;
  z-index: -1;
  width: 260px;
  height: 260px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.78), rgba(125, 184, 255, 0.18));
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 54px;
  box-shadow: 0 40px 90px rgba(42, 113, 218, 0.16);
  transform: translateY(-50%) rotate(18deg);
}

.page-hero-inner {
  padding-top: 72px;
  padding-bottom: 78px;
}

.page-hero-inner > * {
  max-width: 800px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--blue-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-hero h1,
.archive-heading h1 {
  margin: 0;
  color: #0c1729;
  font-size: clamp(42px, 6vw, 72px);
  line-height: 1.12;
  letter-spacing: -0.045em;
}

.page-lead {
  margin: 28px 0 0;
  color: #4a5d78;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.8;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 750;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.page-hero .button {
  margin-top: 34px;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--white);
  background: linear-gradient(135deg, #3ba5ff, #145ff3);
  box-shadow: 0 14px 30px rgba(20, 95, 243, 0.24);
}

.button-primary:hover {
  color: var(--white);
  box-shadow: 0 18px 36px rgba(20, 95, 243, 0.32);
}

.button-secondary {
  color: var(--blue-dark);
  background: var(--surface-blue);
  border-color: #cfe2ff;
}

.content-section {
  padding: 104px 0;
}

.content-section-tint {
  background: var(--surface);
}

.section-heading {
  max-width: 760px;
  margin: 0 auto 54px;
  text-align: center;
}

.section-heading h2,
.bottom-cta h2 {
  margin: 0;
  color: #101b2d;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.section-heading > p:last-child:not(.eyebrow) {
  margin: 18px auto 0;
  color: var(--muted);
  font-size: 18px;
}

.feature-grid {
  display: grid;
  gap: 22px;
}

.feature-grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.feature-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.feature-grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.feature-card {
  position: relative;
  min-height: 230px;
  padding: 30px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 2px 0 rgba(16, 24, 40, 0.01);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.feature-card::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -90px;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(47, 139, 255, 0.12), transparent 68%);
  pointer-events: none;
}

.feature-card:hover {
  border-color: #cbdcf4;
  box-shadow: var(--shadow);
  transform: translateY(-5px);
}

.card-number,
.card-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--blue-dark);
  background: var(--surface-blue);
  font-size: 13px;
  font-weight: 800;
}

.card-number {
  min-width: 50px;
  height: 50px;
  padding: 0 12px;
  border-radius: 14px;
}

.card-badge {
  min-height: 30px;
  padding: 3px 12px;
  border-radius: 999px;
}

.feature-card h3 {
  margin: 0 0 12px;
  color: #142238;
  font-size: 21px;
  line-height: 1.35;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 26px;
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

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

.faq-plus {
  position: relative;
  flex: 0 0 20px;
  width: 20px;
  height: 20px;
}

.faq-plus::before,
.faq-plus::after {
  content: "";
  position: absolute;
  top: 9px;
  left: 2px;
  width: 16px;
  height: 2px;
  background: var(--blue-dark);
  border-radius: 2px;
}

.faq-plus::after {
  transform: rotate(90deg);
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-plus::after {
  transform: rotate(0);
}

.faq-answer {
  padding: 0 26px 24px;
  color: var(--muted);
}

.faq-answer p {
  margin: 0;
}

.bottom-cta {
  color: var(--white);
  background:
    radial-gradient(circle at 15% 10%, rgba(111, 192, 255, 0.36), transparent 24%),
    linear-gradient(125deg, #1d80f5, #1758e8 58%, #194dcc);
}

.bottom-cta-inner {
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
  padding-top: 56px;
  padding-bottom: 56px;
}

.bottom-cta .eyebrow {
  color: #d7eaff;
}

.bottom-cta h2 {
  max-width: 650px;
  color: var(--white);
}

.bottom-cta p:not(.eyebrow) {
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 17px;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

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

.button-light:hover {
  color: var(--blue-dark);
}

.button-outline-light {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.5);
}

.button-outline-light:hover {
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
}

.site-footer {
  padding: 72px 0 0;
  color: rgba(255, 255, 255, 0.64);
  background: #0d1829;
}

.footer-container {
  width: min(calc(100% - 48px), var(--container));
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(260px, 1.2fr) 2fr;
  gap: 80px;
  padding-bottom: 54px;
}

.footer-brand img {
  width: auto;
  height: 34px;
  margin-bottom: 22px;
}

.footer-brand p {
  max-width: 320px;
  margin: 0;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 34px;
}

.footer-links > div {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links h2 {
  margin: 0 0 8px;
  color: var(--white);
  font-size: 15px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.64);
  font-size: 14px;
}

.footer-links a:hover {
  color: var(--white);
}

.footer-bottom {
  width: min(calc(100% - 48px), var(--container));
  min-height: 68px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 13px;
}

.footer-bottom p {
  margin: 0;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.7);
}

.page-hero-compact {
  min-height: 360px;
}

.page-hero-compact .container {
  padding: 72px 0;
}

.page-hero-compact h1 {
  font-size: clamp(38px, 5vw, 58px);
}

.entry-content {
  padding-top: 72px;
  padding-bottom: 100px;
  color: #344054;
  font-size: 17px;
}

.entry-content > * {
  margin-top: 0;
  margin-bottom: 1.35em;
}

.entry-content h2,
.entry-content h3 {
  margin-top: 1.8em;
  color: var(--ink);
  line-height: 1.3;
}

.entry-content h2 { font-size: 32px; }
.entry-content h3 { font-size: 24px; }
.entry-content img { border-radius: 18px; }
.entry-content blockquote {
  margin-left: 0;
  padding: 20px 24px;
  background: var(--surface-blue);
  border-left: 4px solid var(--blue);
  border-radius: 0 12px 12px 0;
}

.single-featured-image {
  margin: -20px 0 54px;
}

.archive-heading {
  margin-bottom: 52px;
}

.archive-heading h1 {
  font-size: clamp(38px, 5vw, 60px);
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.post-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.post-card-image {
  display: block;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--surface);
}

.post-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.post-card:hover .post-card-image img {
  transform: scale(1.04);
}

.post-card-body {
  padding: 26px;
}

.post-meta {
  margin: 0 0 8px;
  color: var(--blue-dark);
  font-size: 13px;
  font-weight: 700;
}

.post-card h2 {
  margin: 0;
  font-size: 22px;
  line-height: 1.35;
}

.post-card h2 a {
  color: var(--ink);
}

.post-card-body > p:not(.post-meta) {
  color: var(--muted);
}

.text-link {
  font-weight: 700;
}

.pagination {
  margin-top: 50px;
}

.empty-state,
.error-page {
  text-align: center;
}

.empty-state {
  padding: 70px 24px;
  background: var(--surface);
  border-radius: var(--radius);
}

.error-page {
  min-height: 620px;
  display: flex;
  align-items: center;
  background: linear-gradient(145deg, #f9fcff, #edf5ff);
}

.error-code {
  margin: 0;
  color: var(--blue);
  font-size: clamp(92px, 18vw, 180px);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.08em;
}

.error-page h1 {
  margin: 28px 0 12px;
  font-size: clamp(34px, 5vw, 52px);
}

.error-page .button-row {
  justify-content: center;
  margin-top: 32px;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (max-width: 1020px) {
  .feature-grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .footer-container {
    gap: 45px;
  }
}

@media (max-width: 860px) {
  .site-header {
    height: 68px;
  }

  .header-container {
    width: min(calc(100% - 32px), 1320px);
  }

  .site-branding img {
    height: 32px;
  }

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

  .primary-navigation {
    position: fixed;
    top: 68px;
    right: 0;
    bottom: 0;
    left: 0;
    display: block;
    padding: 20px 24px 40px;
    overflow-y: auto;
    background: rgba(255, 255, 255, 0.98);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
  }

  .primary-navigation.is-open {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .site-nav {
    display: block;
  }

  .site-nav a {
    width: 100%;
    padding: 16px 4px;
    border-bottom: 1px solid var(--line);
    font-size: 18px;
  }

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

  .header-cta {
    width: 100%;
    min-height: 50px;
    margin-top: 22px;
    justify-content: center;
  }

  .page-hero {
    min-height: 480px;
  }

  .page-hero-glow {
    right: -120px;
    opacity: 0.55;
  }

  .feature-grid-3 {
    grid-template-columns: 1fr;
  }

  .bottom-cta-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 34px;
  }

  .footer-container {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(calc(100% - 32px), var(--container));
  }

  .page-hero {
    min-height: 450px;
  }

  .page-hero-inner {
    padding-top: 58px;
    padding-bottom: 60px;
  }

  .page-hero h1 {
    font-size: clamp(36px, 11vw, 48px);
  }

  .page-lead {
    font-size: 17px;
  }

  .content-section {
    padding: 72px 0;
  }

  .section-heading {
    margin-bottom: 36px;
    text-align: left;
  }

  .feature-grid-2,
  .feature-grid-4,
  .post-grid {
    grid-template-columns: 1fr;
  }

  .feature-card {
    min-height: 0;
    padding: 25px;
  }

  .faq-item summary {
    padding: 20px;
    font-size: 16px;
  }

  .faq-answer {
    padding: 0 20px 20px;
  }

  .bottom-cta-inner {
    min-height: 360px;
  }

  .bottom-cta .button-row,
  .bottom-cta .button {
    width: 100%;
  }

  .footer-container {
    width: min(calc(100% - 32px), var(--container));
  }

  .footer-links {
    grid-template-columns: 1fr 1fr;
  }

  .footer-bottom {
    width: min(calc(100% - 32px), var(--container));
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding: 20px 0;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}