/* ============================================================
   绘美慧门户 · Apple 风格重制
   —— 大留白 / 居中大标题 / 磨砂导航 / 胶囊按钮 / 柔和阴影
   ============================================================ */
:root {
  /* Apple 中性色 */
  --ink: #1d1d1f;
  --ink-soft: #424245;
  --muted: #6e6e73;
  --line: rgba(0, 0, 0, 0.08);
  --bg: #ffffff;
  --bg-soft: #f5f5f7;
  --bg-hero: #fbfbfd;

  /* 品牌色（保留绘美慧蓝金，但按 Apple 方式克制使用） */
  --navy: #1c3a6e;
  --navy-dark: #14294e;
  --navy-hover: #264f8f;
  --navy-soft: #edf3fa;
  --gold: #c39a4f;
  --gold-dark: #a67f38;
  --gold-soft: #f8f1e2;
  --sky: #7fb5e3;

  --radius: 20px;
  --radius-lg: 28px;
  --pill: 980px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  --shadow-lift: 0 12px 40px rgba(0, 0, 0, 0.1);
  --max: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro SC", "SF Pro Text",
    "PingFang SC", "Segoe UI", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  line-height: 1.55;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  overflow-x: hidden;
}

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

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 28px;
}

.container.narrow { max-width: 760px; }

/* ============ header：磨砂玻璃细导航 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(251, 251, 253, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; }

.brand-logo {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  object-fit: cover;
  background: #fff;
}

.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 15px; font-weight: 600; letter-spacing: 0; color: var(--ink); }
.brand-text small { font-size: 11px; color: var(--muted); letter-spacing: 0.02em; }

.nav { display: flex; align-items: center; gap: 30px; }
.nav a { font-size: 13.5px; color: var(--ink-soft); transition: color 0.2s; }
.nav a:hover { color: var(--ink); }

.nav-cta {
  padding: 7px 16px;
  border-radius: var(--pill);
  background: var(--navy);
  color: #fff !important;
  font-weight: 500;
  transition: background 0.2s, transform 0.2s;
}

.nav-cta:hover { background: var(--navy-hover); transform: translateY(-1px); }

/* ============ hero：居中大标题 ============ */
.hero {
  position: relative;
  padding: 108px 0 96px;
  overflow: hidden;
  text-align: center;
  background:
    radial-gradient(720px 420px at 50% -8%, rgba(127, 181, 227, 0.16) 0%, rgba(255, 255, 255, 0) 62%),
    radial-gradient(560px 320px at 82% 30%, rgba(195, 154, 79, 0.07) 0%, rgba(255, 255, 255, 0) 60%),
    linear-gradient(180deg, var(--bg-hero) 0%, #f5f6f8 100%);
  border-bottom: 1px solid var(--line);
}

.hero-inner { position: relative; }

.hero-copy {
  max-width: 720px;
  margin: 0 auto;
  animation: rise 0.7s cubic-bezier(0.22, 0.61, 0.36, 1) both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 22px;
  padding: 6px 14px;
  border-radius: var(--pill);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
}

.hero h1 {
  margin: 0 0 20px;
  font-size: clamp(36px, 5.4vw, 60px);
  line-height: 1.12;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.hero h1 .hl {
  background: linear-gradient(100deg, var(--navy) 10%, #3a6fb5 55%, var(--gold-dark) 105%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.lead {
  margin: 0 auto 34px;
  max-width: 36em;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

/* ============ buttons：胶囊 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--pill);
  font-size: 16px;
  font-weight: 500;
  border: 1px solid transparent;
  transition: transform 0.2s cubic-bezier(0.22, 0.61, 0.36, 1), box-shadow 0.25s ease,
    background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
  cursor: pointer;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--navy);
  color: #fff;
  box-shadow: 0 4px 14px rgba(28, 58, 110, 0.24);
}

.btn-primary:hover {
  background: var(--navy-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(28, 58, 110, 0.3);
}

.btn-ghost {
  background: #fff;
  color: var(--navy);
  border-color: #d2d2d7;
}

.btn-ghost:hover {
  border-color: var(--navy);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

/* 双平台入口：底色高亮跟随鼠标，默认在综评 */
.entry-btn {
  background: #fff;
  color: var(--ink);
  border-color: #d2d2d7;
  box-shadow: var(--shadow-sm);
}

.entry-btn:hover {
  border-color: rgba(0, 0, 0, 0.35);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.entry-btn.is-active {
  background: var(--navy);
  color: #fff;
  border-color: var(--navy);
  box-shadow: 0 4px 16px rgba(28, 58, 110, 0.26);
}

.entry-btn.is-active:hover {
  background: var(--navy-hover);
  border-color: var(--navy-hover);
  box-shadow: 0 10px 26px rgba(28, 58, 110, 0.32);
}

.btn-block { width: 100%; margin-top: auto; }

/* ============ hero visual：透明徽章 ============ */
.hero-visual {
  display: grid;
  place-items: center;
  margin: 0 auto 40px;
}

.visual-emblem {
  position: relative;
  width: clamp(200px, 20vw, 260px);
  animation: floatY 6s ease-in-out infinite, glowPulse 6s ease-in-out infinite;
}

.emblem-base { display: block; width: 100%; height: auto; }

/* 书页微动：同一张图裁剪出左右页区域，绕书脊轻摆 */
.page-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transform-origin: 50% 67%;
}

.page-left {
  clip-path: polygon(47% 52%, 20.5% 65.5%, 47% 66.5%);
  animation: pageL 4.8s ease-in-out infinite;
}

.page-right {
  clip-path: polygon(53% 52%, 82.5% 65.5%, 53% 66.5%);
  animation: pageR 4.8s ease-in-out infinite;
  animation-delay: -2.4s;
}

@keyframes pageL {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(-0.9deg); }
}

@keyframes pageR {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(0.9deg); }
}

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes glowPulse {
  0%, 100% {
    filter: drop-shadow(0 20px 36px rgba(0, 0, 0, 0.1))
            drop-shadow(0 0 14px rgba(127, 181, 227, 0.18));
  }
  50% {
    filter: drop-shadow(0 28px 48px rgba(0, 0, 0, 0.14))
            drop-shadow(0 0 32px rgba(127, 181, 227, 0.34));
  }
}

/* 星星：绕主体公转（自身保持指向）+ 明暗闪烁 */
.orbit {
  position: absolute;
  inset: 0;
}

.orbit-a { animation: orbitSpin 20s linear infinite; }
.orbit-b { animation: orbitSpin 28s linear infinite reverse; }

.star {
  position: absolute;
  filter: drop-shadow(0 0 6px rgba(226, 180, 90, 0.55));
}

.orbit-a .star {
  left: 14%;
  top: 24%;
  width: 9%;
  animation: starA 20s linear infinite;
}

.orbit-b .star {
  left: 80%;
  top: 34%;
  width: 5.5%;
  animation: starB 28s linear infinite;
}

@keyframes orbitSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* 反向自转抵消公转，星星保持不翻转，仅做缩放/明暗呼吸 */
@keyframes starA {
  0% { transform: rotate(0deg) scale(0.92); opacity: 0.8; }
  25% { opacity: 1; }
  50% { transform: rotate(-180deg) scale(1.12); opacity: 0.85; }
  75% { opacity: 1; }
  100% { transform: rotate(-360deg) scale(0.92); opacity: 0.8; }
}

@keyframes starB {
  0% { transform: rotate(0deg) scale(0.88); opacity: 0.75; }
  30% { opacity: 1; }
  50% { transform: rotate(180deg) scale(1.15); opacity: 0.8; }
  80% { opacity: 1; }
  100% { transform: rotate(360deg) scale(0.88); opacity: 0.75; }
}

/* ============ sections ============ */
.section { padding: 110px 0; }

.section-alt {
  background: var(--bg-soft);
}

.section-head {
  max-width: 660px;
  margin: 0 auto 56px;
  text-align: center;
}

.section-head h2 {
  margin: 0 0 12px;
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.section-head p { margin: 0; color: var(--muted); font-size: 17px; }

/* ============ project cards ============ */
.projects {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.project-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 40px 36px 32px;
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid rgba(0, 0, 0, 0.05);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow 0.3s ease, transform 0.3s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.project-card:hover {
  box-shadow: var(--shadow-lift);
  transform: translateY(-4px) scale(1.008);
}

.project-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--navy-soft);
  color: var(--navy);
  display: grid;
  place-items: center;
  margin-bottom: 22px;
}

.project-icon svg { width: 24px; height: 24px; }

.project-card h3 {
  margin: 0 0 10px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.project-card > p { margin: 0 0 18px; color: var(--muted); font-size: 15.5px; }

.feature-list {
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 11px;
}

.feature-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  color: var(--ink-soft);
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 7px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
  opacity: 0.85;
}

/* 卡片右上角入口标签：家长进入 / 代理进入 */
.card-tag {
  position: absolute;
  top: 24px;
  right: 24px;
  padding: 4px 12px;
  border-radius: var(--pill);
  background: var(--gold-soft);
  color: var(--gold-dark);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* ============ who ============ */
.who-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.who-card {
  padding: 30px 26px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s cubic-bezier(0.22, 0.61, 0.36, 1), box-shadow 0.3s ease;
}

.who-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.who-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--navy-soft);
  color: var(--navy);
  margin-bottom: 16px;
}

.who-icon svg { width: 21px; height: 21px; }

.who-card h3 { margin: 0 0 8px; font-size: 17px; font-weight: 600; color: var(--ink); }
.who-card p { margin: 0; font-size: 14px; color: var(--muted); }

/* ============ faq ============ */
.faq-item { border-bottom: 1px solid var(--line); padding: 22px 0; }

.faq-item summary {
  cursor: pointer;
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: color 0.2s;
}

.faq-item summary:hover { color: var(--navy); }
.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: "+";
  font-size: 22px;
  font-weight: 400;
  color: var(--muted);
  transition: transform 0.25s ease;
}

.faq-item[open] summary::after { content: "−"; }
.faq-item[open] summary { color: var(--navy); }

.faq-item p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 15px;
  max-width: 60em;
}

/* ============ cta band：浅灰横幅 ============ */
.cta-band {
  padding: 96px 0;
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
  text-align: center;
}

.cta-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

.cta-inner h2 {
  margin: 0 0 10px;
  font-size: clamp(26px, 3.2vw, 38px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.cta-inner p { margin: 0; color: var(--muted); font-size: 17px; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; }

.cta-band .entry-btn {
  background: #fff;
  color: var(--ink);
  border-color: #d2d2d7;
  box-shadow: var(--shadow-sm);
}

.cta-band .entry-btn:hover {
  border-color: rgba(0, 0, 0, 0.35);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.cta-band .entry-btn.is-active {
  background: var(--navy);
  color: #fff;
  border-color: var(--navy);
  box-shadow: 0 4px 16px rgba(28, 58, 110, 0.26);
}

.cta-band .entry-btn.is-active:hover {
  background: var(--navy-hover);
  border-color: var(--navy-hover);
  box-shadow: 0 10px 26px rgba(28, 58, 110, 0.32);
}

/* ============ footer ============ */
.site-footer {
  padding: 40px 0 48px;
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  align-items: flex-start;
}

.footer-brand-row { display: flex; align-items: center; gap: 10px; }
.footer-logo {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
  background: #fff;
}
.footer-brand strong { font-size: 15px; font-weight: 600; color: var(--ink); }
.footer-brand p { margin: 8px 0 0; font-size: 13px; color: var(--muted); }

.footer-meta { text-align: right; }
.footer-meta p { margin: 0 0 6px; font-size: 12.5px; color: var(--muted); }
.footer-meta a { color: var(--muted); }
.footer-meta a:hover { color: var(--ink); text-decoration: underline; }
.footer-meta .sep { margin: 0 8px; color: rgba(0, 0, 0, 0.2); }
.copyright { margin-top: 10px !important; }

/* ============ responsive ============ */
@media (max-width: 960px) {
  .hero { padding: 80px 0 72px; }
  .hero-visual { margin-top: 52px; }
  .who-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .section { padding: 84px 0; }
}

@media (max-width: 720px) {
  .nav a:not(.nav-cta) { display: none; }
  .hero { padding: 64px 0 56px; }
  .section { padding: 64px 0; }
  .section-head { margin-bottom: 40px; }
  .projects { grid-template-columns: 1fr; }
  .project-card { padding: 30px 26px 26px; }
  .footer-inner { flex-direction: column; }
  .footer-meta { text-align: left; }
  .visual-emblem { width: clamp(160px, 38vw, 200px); }
  .lead { font-size: 16px; }
}

@media (max-width: 520px) {
  .who-grid { grid-template-columns: 1fr; }

  /* 手机端专属微调 */
  .hero { padding: 52px 0 48px; }
  .hero h1 { font-size: clamp(28px, 9vw, 34px); }
  .hero-actions { gap: 10px; }
  .hero-actions .btn { width: 100%; }
  .cta-actions { width: 100%; }
  .cta-actions .btn { width: 100%; }
  .btn { font-size: 15px; padding: 12px 24px; }
  .nav-cta { padding: 6px 14px; font-size: 13px; }
  .visual-emblem { width: clamp(140px, 44vw, 180px); }
  .eyebrow { font-size: 12px; padding: 5px 12px; }
  .section-head h2 { font-size: 26px; }
  .section-head p { font-size: 15px; }
  .project-card h3 { font-size: 20px; }
  .project-card > p { font-size: 14.5px; }
  .faq-item summary { font-size: 15.5px; }
  .cta-inner h2 { font-size: 25px; }
  .lead { font-size: 15.5px; }
}

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