:root {
  --radius: 0.45rem;
  --background: oklch(0.985 0.013 226);
  --foreground: oklch(0.22 0.035 255);
  --card: oklch(0.997 0.006 205);
  --primary: oklch(0.57 0.16 242);
  --primary-foreground: oklch(0.99 0.01 210);
  --secondary: oklch(0.94 0.045 210);
  --secondary-foreground: oklch(0.34 0.08 240);
  --muted: oklch(0.95 0.024 220);
  --muted-foreground: oklch(0.5 0.045 245);
  --accent: oklch(0.91 0.08 178);
  --accent-foreground: oklch(0.28 0.07 185);
  --warning: oklch(0.82 0.15 80);
  --border: oklch(0.88 0.038 220);
  --surface-blue: oklch(0.95 0.05 225);
  --surface-teal: oklch(0.94 0.065 178);
  --shadow-color: 218 74% 42%;
  --shadow: 0 18px 46px hsl(var(--shadow-color) / 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--foreground);
  background:
    radial-gradient(
      circle at 8% 2%,
      color-mix(in oklch, var(--primary) 18%, transparent) 0,
      transparent 23rem
    ),
    radial-gradient(
      circle at 88% 8%,
      color-mix(in oklch, var(--accent) 24%, transparent) 0,
      transparent 20rem
    ),
    radial-gradient(
      circle at 55% 96%,
      color-mix(in oklch, var(--warning) 16%, transparent) 0,
      transparent 24rem
    ),
    linear-gradient(
      180deg,
      var(--background) 0%,
      color-mix(in oklch, var(--background) 92%, var(--surface-blue)) 100%
    );
  font-family: "Avenir Next", "Nunito Sans", Inter, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  text-wrap: pretty;
}

img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: var(--secondary);
}

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

.site-shell {
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid color-mix(in oklch, var(--border) 70%, transparent);
  background: color-mix(in oklch, var(--background) 82%, transparent);
  backdrop-filter: blur(18px);
}

.nav {
  width: min(1180px, calc(100% - 40px));
  min-height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0;
}

.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  color: var(--primary-foreground);
  background: var(--primary);
  border-radius: var(--radius);
  box-shadow: 0 8px 22px hsl(var(--shadow-color) / 0.16);
  font-size: 19px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted-foreground);
  font-size: 14px;
}

.nav-links a {
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid transparent;
}

.nav-links a:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.nav-action {
  min-height: 44px;
  padding: 10px 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-foreground);
  background: var(--primary);
  border: 1px solid var(--primary);
  border-radius: var(--radius);
  box-shadow: 0 8px 22px hsl(var(--shadow-color) / 0.14);
  transition: transform 160ms ease, background 160ms ease;
}

.nav-action:hover {
  transform: translateY(-1px);
  background: color-mix(in oklch, var(--primary) 90%, black);
  border-color: color-mix(in oklch, var(--primary) 90%, black);
}

main {
  overflow: hidden;
}

.section {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 82px 0;
}

.hero {
  width: min(1220px, calc(100% - 40px));
  margin: 0 auto;
  padding: 74px 0 92px;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
  gap: 54px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: 700;
  letter-spacing: 0;
  text-wrap: balance;
}

h1 {
  max-width: 670px;
  font-size: clamp(40px, 4vw, 48px);
  line-height: 1.08;
  word-break: keep-all;
}

.hero-copy {
  max-width: 610px;
  margin: 26px 0 0;
  color: var(--muted-foreground);
  font-size: 18px;
}

.hero-actions {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  min-height: 48px;
  padding: 12px 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid var(--primary);
  border-radius: var(--radius);
  font-weight: 700;
  box-shadow: 0 8px 22px hsl(var(--shadow-color) / 0.1);
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease, color 160ms ease, box-shadow 160ms ease;
}

.button.primary {
  color: var(--primary-foreground);
  background: var(--primary);
}

.button.secondary {
  color: var(--foreground);
  background: color-mix(in oklch, var(--card) 90%, transparent);
  border-color: var(--border);
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px hsl(var(--shadow-color) / 0.13);
}

.button.primary:hover {
  background: color-mix(in oklch, var(--primary) 90%, black);
  border-color: color-mix(in oklch, var(--primary) 90%, black);
}

.button.secondary:hover {
  color: var(--secondary-foreground);
  border-color: color-mix(in oklch, var(--primary) 40%, var(--border));
  background: var(--secondary);
}

.hero-tags {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-tags span {
  padding: 7px 12px;
  color: var(--secondary-foreground);
  background: color-mix(in oklch, var(--secondary) 72%, var(--card));
  border: 1px solid color-mix(in oklch, var(--primary) 18%, var(--border));
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 700;
}

.hero-media {
  position: relative;
  min-height: 560px;
}

.photo-stack {
  position: absolute;
  inset: 0;
}

.photo-main,
.photo-side,
.study-panel {
  position: absolute;
  overflow: hidden;
  border: 1px solid color-mix(in oklch, var(--border) 80%, transparent);
  border-radius: var(--radius);
  background: color-mix(in oklch, var(--card) 86%, transparent);
  box-shadow: var(--shadow);
}

.photo-main {
  right: 0;
  top: 0;
  width: 76%;
  height: 66%;
}

.photo-side {
  left: 0;
  bottom: 42px;
  width: 45%;
  height: 38%;
}

.study-panel {
  right: 34px;
  bottom: 0;
  width: 52%;
  padding: 24px;
}

.panel-label {
  margin: 0 0 18px;
  color: var(--muted-foreground);
  font-size: 13px;
}

.mini-question {
  padding: 16px 0;
  border-top: 1px solid var(--border);
}

.mini-question:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.mini-question strong {
  display: block;
  font-size: 16px;
  line-height: 1.45;
}

.mini-question span {
  display: block;
  margin-top: 8px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(260px, 0.42fr);
  gap: 48px;
  align-items: end;
  margin-bottom: 34px;
}

.section-head h2 {
  font-size: clamp(34px, 4vw, 58px);
  line-height: 1.08;
}

.section-head p {
  margin: 0;
  color: var(--muted-foreground);
}

.entry-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.entry-card {
  min-height: 250px;
  padding: 26px;
  display: flex;
  flex-direction: column;
  border: 1px solid color-mix(in oklch, var(--border) 80%, transparent);
  border-radius: var(--radius);
  background: color-mix(in oklch, var(--card) 86%, transparent);
  box-shadow: var(--shadow);
  transition: background 180ms ease, border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.entry-card:hover {
  border-color: color-mix(in oklch, var(--primary) 42%, var(--border));
  background: color-mix(in oklch, var(--secondary) 62%, var(--card));
  transform: translateY(-3px);
  box-shadow: 0 20px 42px hsl(var(--shadow-color) / 0.12);
}

.entry-number {
  color: var(--primary);
  font-size: 16px;
  font-weight: 800;
}

.entry-card h3 {
  margin-top: 48px;
  font-size: 25px;
  line-height: 1.2;
}

.entry-card p {
  margin: 14px 0 0;
  color: var(--muted-foreground);
  font-size: 14px;
}

.entry-link {
  margin-top: auto;
  color: var(--primary);
  font-weight: 700;
  font-size: 14px;
}

.path-section {
  width: 100%;
  padding: 88px 0;
  background:
    linear-gradient(
      135deg,
      color-mix(in oklch, var(--surface-blue) 86%, white) 0%,
      color-mix(in oklch, var(--surface-teal) 72%, white) 100%
    );
  color: var(--foreground);
}

.path-inner {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.path-inner .eyebrow,
.path-inner .section-head p {
  color: var(--secondary-foreground);
}

.path-inner .section-head {
  margin-bottom: 48px;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.stage {
  position: relative;
  padding: 24px;
  min-height: 190px;
  background: color-mix(in oklch, var(--card) 74%, transparent);
  border: 1px solid color-mix(in oklch, var(--primary) 16%, var(--border));
  border-radius: var(--radius);
  box-shadow: 0 14px 34px hsl(var(--shadow-color) / 0.07);
}

.stage::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 24px;
  width: 34px;
  height: 3px;
  background: var(--primary);
  border-radius: 999px;
}

.stage-number {
  color: var(--primary);
  font-size: 15px;
  font-weight: 800;
}

.stage h3 {
  margin-top: 28px;
  font-size: 24px;
  line-height: 1.22;
}

.stage p {
  margin: 14px 0 0;
  color: var(--muted-foreground);
  font-size: 14px;
  font-weight: 700;
}

.recommend-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(320px, 0.56fr);
  gap: 34px;
}

.question-board {
  padding: 34px;
  background: color-mix(in oklch, var(--card) 86%, transparent);
  border: 1px solid color-mix(in oklch, var(--border) 80%, transparent);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.board-top {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 22px;
}

.board-top h3 {
  font-size: 32px;
  line-height: 1.18;
}

.board-tag {
  padding: 6px 10px;
  color: var(--primary);
  background: color-mix(in oklch, var(--primary) 10%, var(--secondary));
  border-radius: var(--radius);
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.question-list {
  display: grid;
  gap: 0;
  margin-top: 26px;
  border-top: 1px solid var(--border);
}

.question-row {
  display: grid;
  grid-template-columns: 72px 1fr auto;
  gap: 18px;
  align-items: center;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}

.question-type {
  color: var(--muted-foreground);
  font-size: 13px;
}

.question-row strong {
  line-height: 1.45;
}

.question-row a {
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  color: var(--primary);
  font-weight: 700;
  font-size: 14px;
}

.resource-column {
  display: grid;
  gap: 18px;
}

.resource-card {
  min-height: 218px;
  display: grid;
  grid-template-columns: 42% 1fr;
  overflow: hidden;
  background: color-mix(in oklch, var(--card) 86%, transparent);
  border: 1px solid color-mix(in oklch, var(--border) 80%, transparent);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.resource-copy {
  padding: 22px;
  display: flex;
  flex-direction: column;
}

.resource-copy h3 {
  font-size: 22px;
  line-height: 1.2;
}

.resource-copy p {
  margin: 12px 0 0;
  color: var(--muted-foreground);
  font-size: 14px;
}

.resource-copy a {
  min-width: 44px;
  margin-top: auto;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--primary);
  font-weight: 700;
  font-size: 14px;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.faq-card {
  padding: 26px;
  min-height: 210px;
  background: color-mix(in oklch, var(--card) 86%, transparent);
  border: 1px solid color-mix(in oklch, var(--border) 80%, transparent);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.faq-card h3 {
  font-size: 23px;
  line-height: 1.25;
}

.faq-card p {
  margin: 18px 0 0;
  color: var(--muted-foreground);
  font-size: 14px;
}

.membership {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto 86px;
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(360px, 0.55fr);
  gap: 30px;
  align-items: stretch;
  background: color-mix(in oklch, var(--card) 74%, transparent);
  border: 1px solid color-mix(in oklch, var(--border) 80%, transparent);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.membership-copy {
  padding: 44px;
}

.membership-copy h2 {
  font-size: clamp(32px, 4vw, 54px);
  line-height: 1.08;
}

.membership-copy p {
  max-width: 660px;
  margin: 22px 0 0;
  color: var(--muted-foreground);
}

.benefits {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
}

.benefit {
  padding: 16px;
  background: color-mix(in oklch, var(--secondary) 60%, var(--card));
  border: 1px solid color-mix(in oklch, var(--primary) 14%, var(--border));
  border-radius: var(--radius);
  font-weight: 700;
}

.membership-panel {
  padding: 30px;
  background: var(--primary);
  color: var(--primary-foreground);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.price-label {
  color: color-mix(in oklch, var(--primary-foreground) 78%, transparent);
  font-size: 14px;
}

.plan-name {
  margin: 16px 0 0;
  font-size: 30px;
  font-weight: 800;
  line-height: 1.1;
}

.plan-list {
  margin: 28px 0;
  padding: 0;
  list-style: none;
  color: color-mix(in oklch, var(--primary-foreground) 82%, transparent);
}

.plan-list li {
  padding: 12px 0;
  border-top: 1px solid color-mix(in oklch, var(--primary-foreground) 22%, transparent);
}

.panel-button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  background: var(--primary-foreground);
  border-radius: var(--radius);
  font-weight: 800;
}

.footer {
  padding: 36px 0;
  border-top: 1px solid var(--border);
  color: var(--muted-foreground);
  font-size: 13px;
}

.footer-inner {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

@media (max-width: 980px) {
  .nav {
    width: min(100% - 28px, 760px);
  }

  .nav-links {
    display: none;
  }

  .hero,
  .section,
  .path-inner,
  .membership,
  .footer-inner {
    width: min(100% - 28px, 760px);
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 46px;
    gap: 38px;
  }

  .hero-media {
    min-height: 520px;
  }

  .section-head,
  .recommend-layout,
  .membership {
    grid-template-columns: 1fr;
  }

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

  .timeline {
    grid-template-columns: 1fr;
  }

  .stage {
    min-height: auto;
    padding: 22px;
  }

  .stage::before {
    top: -6px;
    left: 22px;
  }

  .faq-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  body {
    font-size: 15px;
  }

  .brand span:not(.brand-mark) {
    display: none;
  }

  .section {
    padding: 58px 0;
  }

  .hero {
    padding-bottom: 64px;
  }

  h1 {
    font-size: clamp(34px, 9vw, 38px);
  }

  .hero-copy {
    font-size: 16px;
  }

  .hero-actions {
    display: grid;
  }

  .button,
  .nav-action {
    width: 100%;
  }

  .hero-media {
    min-height: auto;
    display: grid;
    gap: 14px;
  }

  .photo-stack,
  .photo-main,
  .photo-side,
  .study-panel {
    position: static;
    width: 100%;
  }

  .photo-main {
    height: 310px;
  }

  .photo-side {
    height: 210px;
  }

  .study-panel {
    padding: 20px;
  }

  .section-head {
    gap: 16px;
  }

  .entry-grid,
  .resource-card,
  .benefits {
    grid-template-columns: 1fr;
  }

  .entry-card {
    min-height: 230px;
  }

  .entry-card h3 {
    margin-top: 34px;
  }

  .question-board,
  .membership-copy,
  .membership-panel {
    padding: 24px;
  }

  .question-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .resource-card img {
    height: 190px;
  }

  .footer-inner {
    display: grid;
  }
}