:root {
  --seal: #c0392b;
  --ink: #1f3a4d;
  --ink-deep: #102d40;
  --bamboo: #4c7a60;
  --mist: #aec5b1;
  --silk: #f6f2e9;
  --paper: #fbf9f4;
  --charcoal: #2b2b2b;
  --wood: #d0c3a3;
  --muted: #687477;
  --line: rgba(31, 58, 77, .14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--charcoal);
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
section[id] { scroll-margin-top: 88px; }

.nav {
  position: fixed;
  z-index: 10;
  top: 0;
  left: 50%;
  width: min(1180px, calc(100% - 48px));
  height: calc(82px + env(safe-area-inset-top));
  padding-top: env(safe-area-inset-top);
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(31,58,77,.1);
  background: rgba(246,242,233,.76);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  color: var(--ink);
}
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand img { width: 38px; height: 38px; object-fit: cover; border-radius: 3px; }
.brand span {
  display: flex;
  flex-direction: column;
  color: var(--ink-deep);
  font-family: "Songti SC", "STSong", ui-serif, serif;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: .1em;
  line-height: 1.05;
}
.brand small {
  margin-top: 5px;
  font-family: "Times New Roman", ui-serif, serif;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.nav-links { display: flex; gap: 40px; font-size: 13px; color: rgba(31,58,77,.68); }
.nav-links a { position: relative; padding: 10px 0; }
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 4px;
  height: 1px;
  background: var(--seal);
  transition: right .25s ease;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { right: 0; }

.hero {
  position: relative;
  min-height: 820px;
  height: 100svh;
  max-height: 980px;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(400px, .94fr);
  align-items: center;
  padding: 118px max(7vw, calc((100vw - 1180px)/2)) 68px;
  background:
    radial-gradient(circle at 80% 34%, rgba(174,197,177,.22), transparent 27%),
    radial-gradient(circle at 12% 15%, rgba(208,195,163,.24), transparent 24%),
    linear-gradient(145deg, #fbf8f1 0%, var(--silk) 58%, #edf2eb 100%);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(31,58,77,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31,58,77,.035) 1px, transparent 1px);
  background-size: 74px 74px;
  mask-image: linear-gradient(to right, black, transparent 70%);
}
.hero::after {
  content: "";
  position: absolute;
  right: -90px;
  bottom: -150px;
  width: 560px;
  aspect-ratio: 1;
  border: 1px solid rgba(76,122,96,.14);
  border-radius: 50%;
  box-shadow: 0 0 0 55px rgba(76,122,96,.025), 0 0 0 110px rgba(76,122,96,.02);
}
.hero-copy { position: relative; z-index: 2; padding-top: 18px; animation: rise .9s ease-out both; }
.eyebrow, .section-index {
  margin: 0 0 36px;
  color: var(--seal);
  font-size: 10px;
  letter-spacing: .24em;
  font-weight: 700;
}
.hero h1 {
  margin: 0;
  color: var(--ink-deep);
  font-family: "Songti SC", "STSong", ui-serif, serif;
  font-size: clamp(55px, 6vw, 88px);
  line-height: 1.1;
  letter-spacing: -.055em;
  font-weight: 800;
}
.hero h1 span { color: var(--bamboo); }
.role { margin: 32px 0 0; font-size: 16px; letter-spacing: .08em; color: rgba(31,58,77,.9); }
.role b { color: var(--seal); font-weight: 400; margin: 0 5px; }
.lead { margin: 28px 0 0; color: var(--muted); font-size: 16px; line-height: 1.9; }
.hero-actions { display: flex; gap: 14px; margin-top: 40px; }
.button {
  min-height: 52px;
  padding: 0 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  border: 1px solid rgba(31,58,77,.22);
  border-radius: 3px;
  font-size: 14px;
  transition: transform .25s ease, background .25s ease, color .25s ease;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
.button.primary { background: var(--ink); border-color: var(--ink); color: var(--silk); }
.button.primary:hover, .button.gold:hover { transform: translateY(-2px); background: var(--seal); border-color: var(--seal); }
.button.ghost:hover { border-color: var(--bamboo); color: var(--bamboo); background: rgba(255,255,255,.45); }

.portrait-wrap {
  position: relative;
  align-self: center;
  justify-self: end;
  width: min(41vw, 520px);
  aspect-ratio: 1;
  z-index: 1;
  animation: fade 1.1s .12s ease-out both;
}
.portrait-glow {
  position: absolute;
  inset: 7%;
  border-radius: 50%;
  background: rgba(76,122,96,.14);
  filter: blur(50px);
}
.portrait {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  box-shadow: 0 28px 70px rgba(31,58,77,.18);
}
.signature {
  position: absolute;
  z-index: 2;
  left: -38px;
  bottom: 42px;
  padding: 17px 22px;
  background: rgba(251,249,244,.92);
  border-left: 3px solid var(--seal);
  box-shadow: 0 16px 45px rgba(31,58,77,.12);
  backdrop-filter: blur(14px);
}
.signature span, .signature strong { display: block; }
.signature span { color: var(--ink); font-size: 14px; letter-spacing: .04em; }
.signature strong { margin-top: 6px; color: var(--seal); font-size: 10px; letter-spacing: .23em; }
.section { padding: 112px max(7vw, calc((100vw - 1180px)/2)); }
.about { background: var(--paper); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12%; align-items: start; }
.section h2 {
  margin: 0;
  color: var(--ink-deep);
  font-family: "Songti SC", "STSong", ui-serif, serif;
  font-size: clamp(42px, 5vw, 68px);
  line-height: 1.18;
  letter-spacing: -.045em;
  font-weight: 800;
}
.about-copy > p { margin: 8px 0 40px; font-size: 19px; line-height: 1.9; color: var(--muted); max-width: 570px; }
blockquote {
  margin: 0;
  padding: 5px 0 5px 26px;
  border-left: 2px solid var(--seal);
  color: var(--ink);
  font-size: 20px;
  line-height: 1.9;
  font-family: "Songti SC", "STSong", ui-serif, serif;
}
.growth-model {
  margin-top: 72px;
  display: grid;
  grid-template-columns: 1.35fr repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.growth-model > div { min-height: 170px; padding: 30px; border-right: 1px solid var(--line); display: flex; flex-direction: column; justify-content: center; }
.growth-model > div:last-child { border-right: 0; }
.growth-model small { color: var(--seal); font-size: 9px; letter-spacing: .18em; }
.growth-model h3 {
  margin: 18px 0 0;
  color: var(--ink-deep);
  font-family: "Songti SC", "STSong", ui-serif, serif;
  font-size: 25px;
  line-height: 1.45;
}
.growth-model span { color: var(--ink); font-family: "Songti SC", "STSong", ui-serif, serif; font-size: 28px; font-weight: 800; }
.growth-model p { margin: 12px 0 0; color: var(--muted); font-size: 13px; line-height: 1.65; }

.values {
  margin: 0 max(7vw, calc((100vw - 1180px)/2));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(3,1fr);
}
.values > div { padding: 44px; border-right: 1px solid var(--line); }
.values > div:last-child { border: 0; }
.values span { color: var(--seal); font-size: 10px; font-weight: 650; letter-spacing: .16em; }
.values h3 {
  margin: 25px 0 10px;
  color: var(--ink);
  font-family: "Songti SC", "STSong", ui-serif, serif;
  font-size: 30px;
}
.values p { margin: 0; color: var(--muted); font-size: 14px; }

.courses { background: linear-gradient(180deg, var(--paper), var(--silk)); }
.section-head { display: flex; justify-content: space-between; align-items: end; margin-bottom: 52px; }
.section-head .section-index { margin-bottom: 30px; }
.section-head > p { margin: 0; color: var(--muted); line-height: 1.8; }
.track-list { border-top: 1px solid var(--line); }
.track {
  min-height: 128px;
  display: grid;
  grid-template-columns: 80px 1fr 300px 35px;
  gap: 24px;
  align-items: center;
  border-bottom: 1px solid var(--line);
  transition: padding .25s ease, background .25s ease;
}
.track:hover { padding: 0 20px; background: rgba(255,255,255,.65); }
.track > span { color: var(--seal); font-size: 11px; }
.track h3 { margin: 0 0 9px; color: var(--ink); font-size: 27px; font-weight: 650; }
.track p, .track small { margin: 0; color: var(--muted); }
.track small { font-size: 13px; letter-spacing: .04em; }
.track i { font-style: normal; font-size: 20px; color: var(--seal); }

.audiences {
  margin: 0;
  padding: 0 max(7vw, calc((100vw - 1180px)/2)) 112px;
  background: var(--silk);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.audiences article {
  min-height: 170px;
  padding: 32px;
  background: rgba(255,255,255,.62);
  border-top: 2px solid var(--mist);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  transition: transform .25s ease, border-color .25s ease;
}
.audiences article:hover { transform: translateY(-4px); border-color: var(--seal); }
.audiences h3 { margin: 0 0 12px; color: var(--ink); font-size: 23px; }
.audiences p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.7; }

.philosophy {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 85% 28%, rgba(174,197,177,.16), transparent 24%),
    linear-gradient(135deg, var(--ink-deep), var(--ink));
  color: white;
  text-align: center;
  padding-top: 120px;
  padding-bottom: 120px;
}
.philosophy::after {
  content: "";
  position: absolute;
  right: -130px;
  top: -130px;
  width: 420px;
  aspect-ratio: 1;
  border: 1px solid rgba(246,242,233,.12);
  border-radius: 50%;
}
.section-index.light { color: rgba(255,255,255,.42); }
.philosophy .section-index { text-align: left; }
.mini-title { margin: 0 0 35px; color: var(--mist); font-size: 13px; letter-spacing: .2em; }
.philosophy h2 { color: white; font-size: clamp(34px, 4.8vw, 64px); line-height: 1.55; }
.philosophy h2 span { color: var(--wood); font-weight: 300; }
.philosophy-note { margin: 38px 0 0; color: rgba(255,255,255,.58); font-size: 15px; }

.credentials-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12%; }
.credentials-grid > div > p { margin: 38px 0 0; color: var(--muted); line-height: 2.05; font-size: 14px; }
.numbers { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.numbers div {
  min-height: 155px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 25px 35px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.numbers strong { color: var(--seal); font-size: 38px; font-weight: 560; }
.numbers span { margin-top: 8px; color: var(--muted); font-size: 13px; }
.journey {
  margin-top: 72px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
}
.journey article { padding: 32px 26px 18px 0; border-right: 1px solid var(--line); }
.journey article:not(:first-child) { padding-left: 26px; }
.journey article:last-child { border-right: 0; }
.journey time { color: var(--seal); font-size: 11px; letter-spacing: .08em; }
.journey h3 { margin: 22px 0 9px; color: var(--ink); font-size: 20px; font-weight: 650; }
.journey p { margin: 0; color: var(--muted); font-size: 12px; }

.contact {
  min-height: 360px;
  display: grid;
  grid-template-columns: 1fr 3fr;
  align-items: start;
  background:
    linear-gradient(90deg, rgba(16,45,64,.98), rgba(31,58,77,.94)),
    var(--ink);
  color: white;
}
.contact > div { padding-top: 8px; }
.contact div > p { margin: 0 0 32px; color: var(--mist); font-size: 16px; line-height: 1.7; }
.button.gold { background: var(--seal); border-color: var(--seal); color: white; }
.contact-actions { display: flex; flex-wrap: wrap; gap: 12px; }
footer {
  min-height: 112px;
  padding: 0 max(7vw, calc((100vw - 1180px)/2));
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  align-items: center;
  background: #0c2637;
  color: rgba(255,255,255,.62);
}
footer .brand span { color: white; }
footer p { text-align: center; color: var(--wood); font-family: "Songti SC", "STSong", ui-serif, serif; font-size: 13px; letter-spacing: .12em; }
footer small { text-align: right; font-size: 9px; letter-spacing: .14em; }

@keyframes rise { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fade { from { opacity: 0; transform: scale(.985); } to { opacity: 1; transform: scale(1); } }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; min-height: 930px; height: auto; padding-top: 150px; align-items: start; }
  .hero-copy { padding: 0; }
  .portrait-wrap { position: absolute; right: -4%; bottom: 18px; width: 58vw; }
  .hero h1 { font-size: clamp(52px, 10vw, 74px); }
  .about-grid, .credentials-grid { grid-template-columns: 1fr; gap: 48px; }
  .growth-model { grid-template-columns: 1fr 1fr; }
  .growth-model > div:nth-child(2) { border-right: 0; }
  .growth-model > div { border-bottom: 1px solid var(--line); }
  .growth-model > div:nth-last-child(-n+2) { border-bottom: 0; }
  .track { grid-template-columns: 50px 1fr 30px; }
  .track small { display: none; }
  .contact { grid-template-columns: 1fr; }
  .journey { grid-template-columns: 1fr 1fr; }
  .audiences { grid-template-columns: 1fr; }
  footer { grid-template-columns: 1fr 1fr; }
  footer p { display: none; }
}

@media (max-width: 620px) {
  .nav {
    width: 100%;
    height: calc(62px + env(safe-area-inset-top));
    padding: env(safe-area-inset-top) 18px 0;
    border-bottom-color: rgba(31,58,77,.08);
  }
  .brand img { width: 32px; height: 32px; }
  .brand span { font-size: 17px; }
  .brand small { font-size: 7px; }
  .nav-links { gap: 13px; font-size: 11px; }
  .nav-links a { min-height: 44px; display: inline-flex; align-items: center; }
  .hero {
    min-height: 0;
    height: auto;
    max-height: none;
    grid-template-columns: 1fr;
    padding: calc(90px + env(safe-area-inset-top)) 22px 64px;
  }
  .hero-copy { display: contents; }
  .eyebrow { grid-row: 1; margin-bottom: 22px; font-size: 8px; }
  .hero h1 { grid-row: 2; margin-bottom: 24px; font-size: 47px; line-height: 1.1; letter-spacing: -.045em; }
  .portrait-wrap {
    grid-row: 3;
    position: relative;
    right: auto;
    bottom: auto;
    width: min(82vw, 324px);
    margin: 0 auto 24px;
    justify-self: center;
    opacity: 1;
  }
  .portrait {
    border: 1px solid rgba(31,58,77,.08);
    border-radius: 28px;
    box-shadow: 0 24px 60px rgba(31,58,77,.16);
  }
  .portrait-glow { inset: 4%; filter: blur(34px); }
  .signature {
    left: 16px;
    bottom: 16px;
    padding: 12px 15px;
    border-left-width: 2px;
    border-radius: 0 8px 8px 0;
  }
  .signature span { font-size: 12px; }
  .signature strong { margin-top: 5px; font-size: 9px; }
  .role { max-width: 330px; margin-top: 0; line-height: 1.75; font-size: 13px; letter-spacing: .05em; }
  .role b { margin: 0 2px; }
  .lead { max-width: 335px; margin-top: 18px; font-size: 14px; line-height: 1.75; }
  .hero-actions { width: 100%; margin-top: 26px; gap: 10px; flex-direction: row; }
  .hero-actions .button { width: auto; min-width: 0; flex: 1; padding: 0 14px; gap: 10px; }
  .section { padding: 68px 22px; }
  .section-index { margin-bottom: 28px; }
  .section h2 { font-size: 41px; line-height: 1.2; }
  .about-copy > p { font-size: 17px; }
  blockquote { font-size: 17px; }
  .growth-model { margin-top: 50px; grid-template-columns: repeat(3, 1fr); }
  .growth-model > div { min-height: 116px; padding: 20px 8px; border-right: 1px solid var(--line); border-bottom: 0 !important; text-align: center; }
  .growth-model > div:last-child { border-right: 0; }
  .growth-model .growth-intro { grid-column: 1 / -1; min-height: 140px; padding: 26px 0; border-right: 0; border-bottom: 1px solid var(--line) !important; text-align: left; }
  .growth-model span { font-size: 23px; }
  .growth-model p { font-size: 11px; }
  .values { margin: 0 20px; grid-template-columns: 1fr; }
  .values > div { border-right: 0; border-bottom: 1px solid var(--line); padding: 30px 10px; }
  .section-head { display: block; }
  .section-head > p { margin-top: 25px; }
  .track { min-height: 120px; grid-template-columns: 38px 1fr 20px; gap: 12px; }
  .track h3 { font-size: 23px; }
  .track p { font-size: 13px; }
  .philosophy { padding-left: 20px; padding-right: 20px; }
  .philosophy h2 { font-size: 31px; }
  .numbers div { min-height: 125px; padding: 20px; }
  .audiences { padding: 0 20px 80px; }
  .audiences article { min-height: 140px; }
  .journey {
    margin: 56px -22px 0 0;
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding: 0 22px 14px 0;
    border-top: 0;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .journey::-webkit-scrollbar { display: none; }
  .journey article {
    flex: 0 0 78vw;
    min-height: 160px;
    padding: 28px !important;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(255,255,255,.72);
    scroll-snap-align: start;
  }
  .numbers strong { font-size: 30px; }
  .contact { min-height: 340px; }
  .contact-actions { display: grid; grid-template-columns: 1fr; }
  .contact-actions .button { width: 100%; min-height: 54px; justify-content: space-between; border-radius: 12px; }
  footer { padding: 30px 20px; min-height: 140px; grid-template-columns: 1fr; gap: 22px; }
  footer small { text-align: left; }
}

@media (max-width: 620px) and (max-height: 760px) {
  .hero { padding-top: calc(82px + env(safe-area-inset-top)); padding-bottom: 48px; }
  .eyebrow { margin-bottom: 14px; }
  .hero h1 { margin-bottom: 18px; font-size: 42px; }
  .portrait-wrap { width: min(70vw, 276px); margin-bottom: 18px; }
  .signature { left: 12px; bottom: 12px; padding: 9px 12px; }
  .signature span { font-size: 10px; }
  .signature strong { font-size: 8px; }
  .role { font-size: 12px; line-height: 1.6; }
  .lead { margin-top: 14px; font-size: 13px; line-height: 1.6; }
  .hero-actions { margin-top: 20px; }
  .hero-actions .button { min-height: 48px; }
}

@media (max-width: 380px) {
  .nav { padding-right: 14px; padding-left: 14px; }
  .brand { gap: 8px; }
  .brand img { width: 30px; height: 30px; }
  .brand span { font-size: 16px; }
  .nav-links { gap: 10px; font-size: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}