:root {
  --ink: #101827;
  --muted: #5d6675;
  --paper: #f4f6fb;
  --soft: #eaf0f7;
  --line: rgba(18, 35, 59, 0.12);
  --blue: #16477e;
  --blue-2: #3f73aa;
  --cyan: #168aa2;
  --gold: #c69a45;
  --white: #ffffff;
  --shadow: 0 24px 60px rgba(22, 42, 72, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
  background: var(--paper);
  line-height: 1.65;
}

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  right: 0;
  left: 0;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px clamp(20px, 5vw, 72px);
  color: var(--white);
  background: rgba(12, 29, 52, 0.84);
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 230px;
}

.brand span {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 8px;
  background: var(--blue);
  font-size: 12px;
  font-weight: 900;
  line-height: 1.2;
}

.brand strong {
  font-size: 18px;
  white-space: nowrap;
}

nav {
  display: flex;
  flex: 1;
  justify-content: center;
  gap: clamp(12px, 2vw, 26px);
  color: rgba(255, 255, 255, 0.86);
  font-size: 14px;
}

.nav-action,
.primary-action,
.secondary-action,
.outline-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 11px 22px;
  border-radius: 8px;
  font-weight: 900;
}

.nav-action {
  color: var(--ink);
  background: var(--white);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 430px);
  gap: clamp(28px, 5vw, 72px);
  min-height: 96vh;
  padding: 136px clamp(20px, 6vw, 86px) 60px;
  overflow: hidden;
  color: var(--white);
  isolation: isolate;
}

.hero::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  content: "";
  background:
    linear-gradient(90deg, rgba(7, 18, 34, 0.96), rgba(18, 54, 91, 0.78) 48%, rgba(10, 22, 40, 0.22)),
    linear-gradient(180deg, rgba(7, 16, 30, 0.08), rgba(7, 16, 30, 0.48));
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background: url("hero-venue.png") center / cover no-repeat;
}

.hero-content {
  align-self: center;
  max-width: 880px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 15px;
  font-weight: 900;
  letter-spacing: 0;
}

.hero .eyebrow {
  color: #b6e6f0;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 920px;
  margin-bottom: 24px;
  font-size: clamp(44px, 8vw, 94px);
  line-height: 1.05;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 760px;
  margin-bottom: 34px;
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(18px, 2vw, 23px);
}

.hero-actions,
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.primary-action {
  color: var(--white);
  background: linear-gradient(135deg, var(--cyan), var(--blue-2));
  box-shadow: 0 14px 30px rgba(24, 97, 134, 0.28);
}

.secondary-action {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.42);
}

.outline-action {
  color: var(--blue);
  background: var(--white);
  border: 1px solid var(--line);
}

.hero-card {
  align-self: end;
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.13);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}

.hero-card p,
.hero-card dt {
  color: rgba(255, 255, 255, 0.7);
}

.hero-card h2 {
  margin-bottom: 20px;
  font-size: clamp(25px, 3vw, 36px);
  line-height: 1.2;
}

dl {
  display: grid;
  gap: 14px;
  margin: 0;
}

dt,
dd {
  margin: 0;
}

.hero-card dd {
  color: var(--white);
  font-weight: 900;
}

.section {
  padding: clamp(58px, 8vw, 98px) clamp(20px, 6vw, 86px);
}

.section-head {
  max-width: 840px;
  margin-bottom: 30px;
}

.section-copy {
  max-width: 840px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.section h2 {
  margin-bottom: 0;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.15;
  letter-spacing: 0;
}

.about {
  background: var(--white);
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 430px);
  gap: 28px;
  align-items: stretch;
}

.about-copy {
  padding: 30px;
  border-left: 6px solid var(--cyan);
  background: var(--soft);
}

.about-copy p:last-child {
  margin-bottom: 0;
}

.stat-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.stat-strip div {
  display: grid;
  place-items: center;
  min-height: 160px;
  padding: 18px;
  border-radius: 8px;
  color: var(--white);
  text-align: center;
  background: linear-gradient(135deg, var(--blue), var(--blue-2));
}

.stat-strip strong {
  display: block;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1;
}

.stat-strip span {
  color: rgba(255, 255, 255, 0.78);
}

.system {
  background:
    linear-gradient(rgba(22, 138, 162, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 138, 162, 0.04) 1px, transparent 1px),
    var(--white);
  background-size: 28px 28px;
}

.loop-track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.loop-track::before {
  position: absolute;
  top: 55px;
  right: 9%;
  left: 9%;
  height: 2px;
  content: "";
  background: linear-gradient(90deg, transparent, rgba(22, 138, 162, 0.42), transparent);
}

.loop-track article {
  position: relative;
  z-index: 1;
  display: grid;
  justify-items: center;
  min-height: 210px;
  padding: 18px;
  text-align: center;
}

.loop-track strong {
  display: grid;
  place-items: center;
  width: 74px;
  height: 74px;
  margin-bottom: 12px;
  border: 2px solid var(--blue);
  border-radius: 50%;
  color: var(--blue);
  background: var(--white);
  font-size: 28px;
  box-shadow: 0 0 0 10px var(--white);
}

.loop-track .active strong {
  color: var(--white);
  background: var(--blue);
  border-color: #20aee8;
  box-shadow: 0 0 0 5px var(--white), 0 0 0 9px #20aee8;
}

.loop-track span {
  color: var(--ink);
  font-size: 20px;
  font-weight: 900;
}

.loop-track p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
}

.virtues {
  background: var(--paper);
}

.virtue-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.virtue-grid article {
  position: relative;
  min-height: 166px;
  padding: 26px 88px 26px 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 16px 36px rgba(22, 42, 72, 0.08);
}

.virtue-grid article.highlight {
  border: 3px solid #20aee8;
}

.virtue-grid span {
  position: absolute;
  top: 20px;
  right: 26px;
  color: rgba(22, 138, 162, 0.28);
  font-size: 42px;
  font-style: italic;
  font-weight: 900;
  line-height: 1;
}

.virtue-grid h3 {
  margin-bottom: 10px;
  font-size: 26px;
  line-height: 1.2;
}

.virtue-grid p {
  margin-bottom: 0;
  color: var(--muted);
}

.price-band {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 18px;
  margin-top: 28px;
  padding: 30px;
  border-left: 6px solid #20aee8;
  border-radius: 8px;
  color: var(--white);
  background: #10243e;
  box-shadow: var(--shadow);
}

.price-band span {
  display: block;
  margin-bottom: 8px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.price-band strong {
  display: block;
  font-size: clamp(32px, 6vw, 72px);
  line-height: 1;
}

.price-band small {
  font-size: 22px;
}

.price-band p {
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.68);
}

.opportunity {
  color: var(--white);
  background: linear-gradient(135deg, #143c6b, #477cad);
}

.opportunity .eyebrow,
.course .eyebrow {
  color: #b6e6f0;
}

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

.opportunity-layout article,
.course-grid article,
.takeaway-layout article,
.speaker,
.detail-list > div,
.arrival-grid article,
.faq-grid article,
.source-box {
  border-radius: 8px;
  box-shadow: 0 16px 36px rgba(22, 42, 72, 0.1);
}

.opportunity-layout article {
  min-height: 260px;
  padding: 28px;
  color: var(--ink);
  background: var(--white);
}

.opportunity-layout span,
.course-grid span,
.takeaway-layout span,
.arrival-grid span,
.detail-list span {
  display: block;
  margin-bottom: 12px;
  color: var(--cyan);
  font-weight: 900;
}

.opportunity-layout h3,
.course-grid h3,
.takeaway-layout h3,
.arrival-grid h3,
.speaker h3,
.faq-grid h3 {
  margin-bottom: 10px;
  font-size: 24px;
  line-height: 1.25;
}

.opportunity-layout p,
.course-grid p,
.takeaway-layout p,
.arrival-grid p,
.speaker li,
.detail-list p,
.poster figcaption,
.faq-grid p,
.source-box p {
  color: var(--muted);
}

.course {
  color: var(--white);
  background: #10243e;
}

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

.course-grid article {
  min-height: 238px;
  padding: 26px;
  color: var(--ink);
  background: var(--white);
}

.course-grid span {
  color: var(--gold);
  font-size: 14px;
}

.takeaways {
  background: var(--white);
}

.takeaway-layout {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.takeaway-layout article {
  min-height: 238px;
  padding: 26px;
  background: var(--paper);
  border: 1px solid var(--line);
}

.takeaway-layout span {
  color: var(--gold);
  font-size: 14px;
}

.speakers {
  background: var(--paper);
}

.speaker-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 18px;
}

.speaker {
  padding: 30px;
  background: var(--white);
  border: 1px solid var(--line);
}

.speaker.featured {
  color: var(--white);
  background: linear-gradient(135deg, var(--blue), var(--blue-2));
}

.speaker.featured li,
.speaker.featured p {
  color: rgba(255, 255, 255, 0.76);
}

.speaker p {
  margin-bottom: 6px;
  color: var(--cyan);
  font-weight: 900;
}

ul {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding-left: 20px;
}

.company {
  background: #ffffff;
}

.company-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
  gap: 18px;
  align-items: stretch;
}

.company-intro,
.company-cards article,
.company-note {
  border-radius: 8px;
  box-shadow: 0 16px 36px rgba(22, 42, 72, 0.1);
}

.company-intro {
  display: grid;
  align-content: center;
  padding: 30px;
  color: var(--white);
  background: linear-gradient(135deg, #143c6b, #477cad);
}

.company-intro p {
  color: rgba(255, 255, 255, 0.82);
}

.company-intro p:last-child {
  margin-bottom: 0;
}

.company-cards {
  display: grid;
  gap: 14px;
}

.company-cards article {
  padding: 24px;
  background: var(--paper);
  border: 1px solid var(--line);
}

.company-cards span {
  display: block;
  margin-bottom: 8px;
  color: var(--cyan);
  font-weight: 900;
}

.company-cards h3 {
  margin-bottom: 8px;
  font-size: 24px;
  line-height: 1.25;
}

.company-cards p {
  margin-bottom: 0;
  color: var(--muted);
}

.company-note {
  margin-top: 18px;
  padding: 18px 20px;
  color: var(--muted);
  background: #fff8ea;
  border: 1px solid rgba(198, 154, 69, 0.32);
}

.company-note strong {
  color: var(--ink);
}

.details {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: clamp(26px, 5vw, 64px);
  align-items: start;
  background: var(--white);
}

.arrival {
  background: var(--paper);
}

.course-poster {
  background: var(--paper);
}

.wide-poster {
  max-width: 980px;
  margin: 0 auto;
}

.wide-poster img {
  display: block;
  width: 100%;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.wide-poster figcaption {
  margin-top: 12px;
  color: var(--muted);
  text-align: center;
  font-size: 14px;
}

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

.arrival-grid article {
  min-height: 190px;
  padding: 26px;
  background: var(--white);
  border: 1px solid var(--line);
}

.arrival-grid span {
  color: var(--gold);
}

.details-main {
  min-width: 0;
}

.detail-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 30px 0 22px;
}

.detail-list > div {
  min-height: 150px;
  padding: 22px;
  background: var(--paper);
  border: 1px solid var(--line);
}

.detail-list strong {
  display: block;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.16;
}

.detail-list p {
  margin: 8px 0 0;
}

.wide {
  min-width: min(100%, 260px);
}

.poster {
  position: sticky;
  top: 96px;
  margin: 0;
}

.poster img {
  display: block;
  width: 100%;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.poster figcaption {
  margin-top: 12px;
  text-align: center;
  font-size: 14px;
}

.faq {
  background: var(--paper);
}

.faq-grid article {
  min-height: 180px;
  padding: 26px;
  background: var(--white);
  border: 1px solid var(--line);
}

.sources {
  padding-top: 0;
}

.source-box {
  padding: 30px;
  background: var(--white);
  border: 1px solid var(--line);
}

.source-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.source-links a {
  padding: 10px 14px;
  border-radius: 8px;
  color: var(--blue);
  background: var(--soft);
  font-weight: 800;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 34px clamp(20px, 6vw, 86px);
  color: var(--white);
  background: #10243e;
}

.site-footer strong {
  display: block;
  margin-bottom: 6px;
  font-size: 22px;
}

.site-footer p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.72);
}

.floating-cta {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 30;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 20px;
  border-radius: 8px;
  color: var(--white);
  background: linear-gradient(135deg, var(--cyan), var(--blue-2));
  box-shadow: var(--shadow);
  font-weight: 900;
}

@media (max-width: 1080px) {
  nav {
    display: none;
  }

  .site-header {
    justify-content: space-between;
  }

  .hero,
  .about-grid,
  .details {
    grid-template-columns: 1fr;
  }

  .hero-card {
    align-self: start;
    max-width: 620px;
  }

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

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

  .loop-track,
  .virtue-grid,
  .price-band {
    grid-template-columns: 1fr;
  }

  .loop-track::before {
    display: none;
  }
}

@media (max-width: 820px) {
  .site-header {
    align-items: center;
    padding: 14px 18px;
  }

  .brand {
    min-width: 0;
  }

  .brand strong {
    white-space: normal;
  }

  .nav-action {
    display: none;
  }

  .hero {
    min-height: auto;
    padding: 112px 20px 36px;
  }

  .hero::before {
    background:
      linear-gradient(180deg, rgba(7, 18, 34, 0.89), rgba(18, 51, 86, 0.8)),
      linear-gradient(90deg, rgba(7, 18, 34, 0.58), rgba(7, 18, 34, 0.22));
  }

  .hero-bg {
    background-position: 58% center;
  }

  h1 {
    font-size: clamp(40px, 14vw, 66px);
  }

  .stat-strip,
  .loop-track,
  .virtue-grid,
  .price-band,
  .opportunity-layout,
  .course-grid,
  .takeaway-layout,
  .speaker-layout,
  .company-layout,
  .detail-list,
  .arrival-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .stat-strip div,
  .opportunity-layout article,
  .course-grid article,
  .takeaway-layout article,
  .arrival-grid article,
  .faq-grid article {
    min-height: 0;
  }

  .site-footer {
    display: grid;
    padding-bottom: 92px;
  }

  .floating-cta {
    right: 14px;
    bottom: 14px;
    left: 14px;
  }

  .poster {
    position: static;
  }
}

@media (max-width: 460px) {
  .brand span {
    width: 42px;
    height: 42px;
  }

  .brand strong {
    font-size: 15px;
  }

  .hero-actions,
  .cta-row {
    display: grid;
  }

  .primary-action,
  .secondary-action,
  .outline-action {
    width: 100%;
  }

  .section {
    padding-right: 18px;
    padding-left: 18px;
  }
}