/* 读写困难有方法 · Unlocking Dyslexia 主页样式 */
:root {
  --blue: #2270b0;
  --blue-dark: #1a5789;
  --blue-soft: #eaf3fa;
  --amber: #fbc141;
  --amber-soft: #fff6e0;
  --ink: #1f2937;
  --muted: #5b6b7c;
  --bg: #fffdf8;
  --card: #ffffff;
  --radius: 1rem;
  --shadow: 0 6px 24px rgb(34 112 176 / 0.08);
  --max: 72rem;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3 { line-height: 1.3; margin: 0 0 0.5em; }
p { margin: 0 0 1em; }

.container { width: min(100% - 2.5rem, var(--max)); margin-inline: auto; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--blue);
  color: #fff;
  padding: 0.5rem 1rem;
  z-index: 100;
}
.skip-link:focus { left: 0; color: #fff; }

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgb(255 253 248 / 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgb(34 112 176 / 0.1);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.6rem;
}
.brand { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; color: var(--ink); }
.brand img { border-radius: 50%; }
.brand-text { font-weight: 700; font-size: 1.05rem; display: flex; flex-direction: column; line-height: 1.2; }
.brand-text small { font-weight: 500; font-size: 0.72rem; color: var(--muted); letter-spacing: 0.04em; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-menu a { text-decoration: none; color: var(--ink); font-size: 0.95rem; }
.nav-menu a:not(.btn):hover { color: var(--blue); }
.nav-menu .btn { color: #fff; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  padding: 0.6rem;
  cursor: pointer;
}
.nav-toggle span { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; }

/* ===== 按钮 ===== */
.btn {
  display: inline-block;
  background: var(--blue);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  padding: 0.8rem 1.6rem;
  border-radius: 999px;
  transition: background 0.2s, transform 0.2s;
}
.btn:hover { background: var(--blue-dark); transform: translateY(-1px); }
.btn-sm { padding: 0.45rem 1.1rem; font-size: 0.9rem; }
.btn-ghost {
  background: transparent;
  color: var(--blue);
  border: 2px solid var(--blue);
}
.btn-ghost:hover { background: var(--blue-soft); }

/* ===== Hero ===== */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(3rem, 4vw + 2rem, 6rem) 0 clamp(2.5rem, 3vw + 1.5rem, 4.5rem);
}
.hero::before {
  content: "";
  position: absolute;
  width: clamp(20rem, 45vw, 34rem);
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--amber);
  opacity: 0.35;
  right: -8rem;
  top: -6rem;
  z-index: -1;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  align-items: center;
  gap: clamp(2rem, 5vw, 4rem);
}
.eyebrow {
  color: var(--blue);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.85rem;
  margin-bottom: 0.4rem;
}
.hero h1 {
  font-size: clamp(2.2rem, 1.4rem + 4vw, 3.6rem);
  font-weight: 800;
  margin-bottom: 0.6rem;
}
.hl { color: var(--blue); position: relative; white-space: nowrap; }
.hl::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0.08em;
  height: 0.32em;
  background: var(--amber);
  opacity: 0.55;
  z-index: -1;
  border-radius: 0.2em;
}
.lede { font-size: clamp(1.05rem, 0.95rem + 0.5vw, 1.25rem); color: var(--muted); max-width: 34em; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 0.8rem; margin: 1.4rem 0 1.6rem; }
.hero-points {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.4rem;
  margin: 0;
  padding: 0;
  color: var(--muted);
  font-size: 0.92rem;
}
.hero-points li { display: flex; align-items: center; gap: 0.4rem; }
.hero-points li::before {
  content: "";
  width: 0.5rem; height: 0.5rem;
  border-radius: 50%;
  background: var(--amber);
  flex: none;
}
.hero-visual img { margin-inline: auto; border-radius: 1.5rem; }

/* ===== 通用区块 ===== */
.section { padding: clamp(2.8rem, 3vw + 1.8rem, 5rem) 0; scroll-margin-top: 4.5rem; }
.section-alt { background: linear-gradient(180deg, var(--blue-soft), rgb(234 243 250 / 0)); }
.section-title {
  font-size: clamp(1.6rem, 1.2rem + 2vw, 2.3rem);
  font-weight: 800;
  text-align: center;
}
.section-sub { text-align: center; color: var(--muted); max-width: 40em; margin: 0 auto 2.4rem; }

/* ===== 卡片 ===== */
.card-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.4rem;
}
.card-grid.three { grid-template-columns: repeat(3, 1fr); }
.card {
  background: var(--card);
  border: 1px solid rgb(34 112 176 / 0.1);
  border-radius: 1.25rem;
  box-shadow: 0 2px 10px rgb(31 41 55 / 0.05);
  padding: 1.9rem 1.8rem;
  height: 100%;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 34px rgb(34 112 176 / 0.12);
  border-color: rgb(34 112 176 / 0.28);
}
.card h3 { font-size: 1.2rem; }
.card p { color: var(--muted); margin-bottom: 0; }
.card-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.7rem;
}
.card-head h3 { margin: 0; }
.card-icon {
  display: inline-grid;
  place-items: center;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 0.8rem;
  background: var(--amber-soft);
  color: var(--blue);
  flex: none;
}
.card-link {
  position: relative;
  display: block;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
}
.card-link::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--blue), var(--amber));
}
.card-link:hover h3 { color: var(--blue); }
.tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--blue);
  background: var(--blue-soft);
  border-radius: 999px;
  padding: 0.15rem 0.7rem;
  margin-bottom: 0.7rem;
}
.tag-amber { color: #8a5a00; background: var(--amber-soft); }
.badge {
  font-size: 0.72rem;
  font-weight: 600;
  color: #0f6b3a;
  background: #e3f5ea;
  border-radius: 999px;
  padding: 0.1rem 0.55rem;
  margin-left: 0.4rem;
  vertical-align: middle;
}
.card-more {
  display: inline-flex;
  align-items: center;
  margin-top: 0.9rem;
  color: var(--blue);
  font-weight: 600;
  font-size: 0.92rem;
  transition: transform 0.2s;
}
.card-link:hover .card-more { transform: translateX(3px); }

/* ===== 核心服务（主推 + 辅助） ===== */
.svc-grid {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 1.4rem;
  align-items: stretch;
}
.svc-stack {
  display: grid;
  gap: 1.4rem;
}
.svc-featured { display: flex; flex-direction: column; }
.svc-featured h3 { font-size: 1.35rem; }
.svc-points {
  list-style: none;
  margin: 0.4rem 0 0;
  padding: 0;
  color: var(--muted);
  font-size: 0.95rem;
}
.svc-points li { display: flex; gap: 0.5rem; padding: 0.35rem 0; }
.svc-points li::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--amber);
  flex: none;
  margin-top: 0.55em;
}
.svc-points strong { color: var(--ink); font-weight: 600; }
.svc-note { font-size: 0.88rem; margin-top: 0.5rem; }
.svc-featured .card-more { margin-top: auto; padding-top: 0.9rem; }

/* ===== 流程步骤 ===== */
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.4rem;
  counter-reset: step;
}
.step {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.6rem 1.4rem;
}
.step-num {
  display: inline-grid;
  place-items: center;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  background: var(--amber);
  color: var(--ink);
  font-weight: 800;
  margin-bottom: 0.7rem;
}
.step h3 { font-size: 1.1rem; }
.step p { color: var(--muted); font-size: 0.92rem; margin-bottom: 0; }

/* ===== 导师 ===== */
.mentor-grid {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: clamp(1.6rem, 4vw, 3.5rem);
  align-items: center;
}
.mentor-photo { margin: 0; }
.mentor-photo img {
  border-radius: 50%;
  border: 6px solid var(--amber);
  margin-inline: auto;
}
.mentor-copy .section-title { text-align: left; }
.mentor-list { margin: 0; padding-left: 1.2em; color: var(--muted); }
.mentor-list li { margin-bottom: 0.5em; }
.mentor-list li::marker { color: var(--blue); }

/* ===== 联系 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: clamp(1.6rem, 4vw, 3.5rem);
  align-items: center;
}
.contact-grid .section-title, .contact-grid .section-sub { text-align: left; margin-left: 0; }
.qr { margin: 0; text-align: center; }
.qr img {
  width: min(200px, 60vw);
  margin-inline: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.qr figcaption { margin-top: 0.7rem; color: var(--muted); font-size: 0.9rem; }

/* ===== 页脚 ===== */
.site-footer {
  border-top: 1px solid rgb(34 112 176 / 0.1);
  padding: 1.6rem 0 2.2rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.88rem;
}
.site-footer p { margin: 0.2rem 0; }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--blue); }

/* ===== 可访问性 ===== */
:focus-visible { outline: 3px solid var(--amber); outline-offset: 2px; border-radius: 4px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}

/* ===== 响应式 ===== */
@media (max-width: 56rem) {
  .card-grid.three { grid-template-columns: 1fr 1fr; }
  .svc-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .hero-visual img { width: min(240px, 60vw); }
  .mentor-grid, .contact-grid { grid-template-columns: 1fr; }
  .mentor-copy .section-title, .contact-grid .section-title, .contact-grid .section-sub { text-align: center; }
  .contact-grid .hero-cta { justify-content: center; }
  .nav-toggle { display: flex; }
  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid rgb(34 112 176 / 0.12);
    padding: 0.4rem 1.25rem 1rem;
    display: none;
  }
  .nav-menu.open { display: flex; }
  .nav-menu li { padding: 0.35rem 0; }
  .nav-menu .btn { text-align: center; margin-top: 0.4rem; }
}

@media (max-width: 40rem) {
  .card-grid.three, .steps { grid-template-columns: 1fr; }
}

/* ===== CTA 提示与价格 ===== */
.cta-note { color: var(--muted); font-size: 0.9rem; margin: -0.6rem 0 1.4rem; }
.cta-note a { color: var(--blue); }
.price-line { font-weight: 800; color: var(--blue); font-size: 1.15rem; margin: 0.9rem 0 0; }
.price-line .badge { font-weight: 600; }

/* ===== 常见问题 ===== */
.faq-container { max-width: 52rem; }
.faq-list { display: grid; gap: 0.9rem; }
.faq-item {
  background: var(--card);
  border: 1px solid rgb(34 112 176 / 0.1);
  border-radius: 1rem;
  padding: 1.1rem 1.4rem;
  transition: border-color 0.2s;
}
.faq-item[open] { border-color: rgb(34 112 176 / 0.35); }
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.05rem;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-icon { position: relative; width: 1.1rem; height: 1.1rem; flex: none; }
.faq-icon::before, .faq-icon::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  background: var(--blue);
  border-radius: 2px;
}
.faq-icon::before { width: 100%; height: 2px; }
.faq-icon::after { width: 2px; height: 100%; transition: transform 0.2s; }
.faq-item[open] .faq-icon::after { transform: rotate(90deg); }
.faq-item p { color: var(--muted); margin: 0.7rem 0 0; }

/* ===== 404 页 ===== */
.nf {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 3rem 0;
}
.nf img { width: 140px; margin: 0 auto 1.2rem; border-radius: 50%; }
.nf h1 { font-size: clamp(1.8rem, 1.2rem + 2vw, 2.6rem); }
.nf p { color: var(--muted); }
.nf .hero-cta { justify-content: center; }