:root {
  --bg: #FFFFFF;
  --bg-soft: #F5F8FD;
  --card: #FFFFFF;
  --ink: #0B1530;
  --ink-2: #1A2A52;
  --muted: #5A6A85;
  --line: #E4EAF4;

  --blue: #2F6BFF;
  --blue-ink: #1F53E0;
  --cyan: #22C3EE;
  --mint: #2DD4A7;
  --purple: #7C6CF0;
  --amber: #F5A524;

  --grad: linear-gradient(120deg, #2F6BFF 0%, #22C3EE 55%, #2DD4A7 100%);
  --grad-border: linear-gradient(140deg, rgba(47, 107, 255, .55), rgba(34, 195, 238, .25) 45%, rgba(45, 212, 167, .55));

  --display: "Sora", "Inter", system-ui, sans-serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --radius: 16px;
  --shadow: 0 1px 2px rgba(11, 21, 48, .05), 0 16px 40px -18px rgba(11, 21, 48, .22);
  --glow: 0 30px 80px -30px rgba(47, 107, 255, .45);
  --max: 1160px;
  --gutter: clamp(16px, 4vw, 40px);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 16.5px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3 { margin: 0; line-height: 1.15; font-family: var(--display); }
h1, h2 { font-weight: 700; letter-spacing: -.035em; text-wrap: balance; }
h3 { font-size: 1.05rem; font-weight: 600; letter-spacing: -.015em; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }

.skip {
  position: absolute; left: -999px; top: 8px;
  background: var(--ink); color: #fff; padding: 8px 14px; border-radius: 8px; z-index: 100;
}
.skip:focus { left: 8px; }

:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 6px; }

/* 标题里的关键词：渐变文字 */
mark {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 24px; border-radius: 12px;
  font: 600 .96rem/1 var(--sans); text-decoration: none;
  border: 1px solid transparent;
  transition: transform .15s ease, box-shadow .2s ease, background-color .15s ease, border-color .15s ease, color .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn--small { padding: 10px 16px; font-size: .88rem; border-radius: 10px; }
.btn--primary {
  background: linear-gradient(135deg, #2F6BFF, #3F8CFF);
  color: #fff;
  box-shadow: 0 10px 24px -10px rgba(47, 107, 255, .8), inset 0 1px 0 rgba(255, 255, 255, .25);
}
.btn--primary:hover { box-shadow: 0 14px 32px -10px rgba(47, 107, 255, .9), inset 0 1px 0 rgba(255, 255, 255, .25); }
.btn--ink { background: var(--ink); color: #fff; }
.btn--ink:hover { background: var(--ink-2); }
.btn--ghost { background: rgba(255, 255, 255, .7); border-color: var(--line); color: var(--ink); backdrop-filter: blur(8px); }
.btn--ghost:hover { border-color: rgba(47, 107, 255, .5); color: var(--blue); }
.btn--light { background: rgba(255, 255, 255, .08); color: #fff; border-color: rgba(255, 255, 255, .22); }
.btn--light:hover { background: rgba(255, 255, 255, .16); }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .72);
  backdrop-filter: saturate(1.6) blur(14px);
  -webkit-backdrop-filter: saturate(1.6) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease;
}
.nav.is-scrolled { border-bottom-color: var(--line); }
.nav__inner { display: flex; align-items: center; gap: 24px; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.brand__name { font: 700 1.12rem/1 var(--display); letter-spacing: .02em; }
.nav__links { display: flex; gap: 24px; margin-left: auto; }
.nav__links a { text-decoration: none; font-size: .92rem; font-weight: 500; color: var(--muted); transition: color .15s; }
.nav__links a:hover, .nav__links a.is-active { color: var(--ink); }
.nav__links a { position: relative; }
.nav__links a.is-active::after { content: ""; position: absolute; left: 0; right: 0; bottom: -6px; height: 2px; border-radius: 2px; background: var(--grad); }
.nav__actions { display: flex; align-items: center; gap: 12px; }

.lang { display: inline-flex; border: 1px solid var(--line); border-radius: 10px; padding: 3px; background: var(--bg-soft); }
.lang button {
  border: 0; background: transparent; color: var(--muted);
  font: 500 .74rem/1 var(--mono);
  padding: 7px 10px; border-radius: 7px; cursor: pointer;
}
.lang button[aria-pressed="true"] { background: #fff; color: var(--blue); box-shadow: 0 1px 3px rgba(11, 21, 48, .12); }

.nav__toggle { display: none; width: 40px; height: 40px; border: 0; background: transparent; cursor: pointer; padding: 10px; }
.nav__toggle span { display: block; height: 2px; background: var(--ink); border-radius: 2px; transition: transform .2s; }
.nav__toggle span + span { margin-top: 6px; }
.nav__toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }

.mobile-menu { border-top: 1px solid var(--line); padding: 8px var(--gutter) 16px; display: grid; background: #fff; }
.mobile-menu[hidden] { display: none; }
.mobile-menu a { padding: 12px 0; text-decoration: none; font-weight: 500; border-bottom: 1px solid var(--line); }
.mobile-menu a:last-child { border-bottom: 0; }

/* ---------- Shared ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px; border-radius: 999px;
  border: 1px solid var(--line); background: rgba(255, 255, 255, .7);
  font: 500 .72rem/1.2 var(--mono); letter-spacing: .06em; text-transform: uppercase;
  color: var(--blue); margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--grad); box-shadow: 0 0 0 3px rgba(47, 107, 255, .12); }
.section { position: relative; padding: clamp(72px, 10vw, 112px) 0; }
.section--tint { background: var(--bg-soft); }
.section--sky {
  background-color: var(--bg-soft);
  background-image: radial-gradient(rgba(47, 107, 255, .12) 1px, transparent 1px);
  background-size: 22px 22px;
}
.section__head { max-width: 680px; margin-bottom: clamp(36px, 5vw, 56px); }
.section__head h2, .group__copy h2, .teachers__copy h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); }
.section__lead { color: var(--muted); font-size: 1.05rem; margin-top: 16px; }

/* 深色版块（会话流程） */
.section--dark {
  background: var(--ink); color: #fff; overflow: hidden;
}
.section--dark::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(40% 50% at 15% 0%, rgba(47, 107, 255, .35), transparent 70%),
    radial-gradient(35% 45% at 95% 100%, rgba(45, 212, 167, .22), transparent 70%);
}
.section--dark::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(70% 70% at 50% 40%, #000, transparent);
  mask-image: radial-gradient(70% 70% at 50% 40%, #000, transparent);
}
.section--dark .wrap { position: relative; z-index: 1; }
.section--dark .eyebrow { background: rgba(255, 255, 255, .06); border-color: rgba(255, 255, 255, .14); color: #8FB3FF; }
.section--dark .section__lead { color: rgba(255, 255, 255, .66); }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: clamp(48px, 7vw, 96px) 0 clamp(64px, 8vw, 112px);
}
/* 点阵背景 + 光晕 */
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(rgba(11, 21, 48, .12) 1px, transparent 1px);
  background-size: 22px 22px;
  -webkit-mask-image: radial-gradient(80% 70% at 50% 30%, #000 20%, transparent 80%);
  mask-image: radial-gradient(80% 70% at 50% 30%, #000 20%, transparent 80%);
}
.hero::after {
  content: ""; position: absolute; pointer-events: none;
  width: 900px; height: 900px; right: -260px; top: -320px;
  background:
    radial-gradient(closest-side, rgba(47, 107, 255, .22), transparent),
    radial-gradient(closest-side at 30% 70%, rgba(34, 195, 238, .18), transparent);
  filter: blur(20px);
}
.hero__grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(32px, 5vw, 72px); align-items: center; }
.hero h1 { font-size: clamp(2.4rem, 5.2vw, 4.1rem); line-height: 1.05; }
.lead { font-size: clamp(1.03rem, 1.35vw, 1.15rem); color: var(--muted); margin-top: 22px; max-width: 34em; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero__facts {
  display: grid; grid-template-columns: repeat(4, auto); justify-content: start;
  margin-top: 44px; border-top: 1px solid var(--line); padding-top: 22px;
}
.hero__facts li { display: grid; gap: 2px; padding: 0 22px; border-left: 1px solid var(--line); color: var(--muted); font-size: .8rem; }
.hero__facts li:first-child { padding-left: 0; border-left: 0; }
.hero__facts strong {
  font: 600 1.5rem/1.1 var(--display); letter-spacing: -.02em;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}

.hero__demo { position: relative; }
.hero__demo::before {
  content: ""; position: absolute; inset: 8% -6% -4% 6%; z-index: 0;
  background: var(--grad); filter: blur(60px); opacity: .28; border-radius: 40px;
}
.float-chip {
  position: absolute; z-index: 2;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 12px; border-radius: 10px;
  background: rgba(255, 255, 255, .78);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, .9);
  box-shadow: var(--shadow);
  font: 500 .74rem/1 var(--mono); color: var(--ink);
}
.float-chip i { position: relative; width: 7px; height: 7px; border-radius: 50%; background: var(--mint); }
.float-chip i::after { content: ""; position: absolute; inset: -4px; border-radius: 50%; border: 1px solid var(--mint); animation: ping 1.8s ease-out infinite; }
@keyframes ping { from { transform: scale(.6); opacity: .9; } to { transform: scale(1.6); opacity: 0; } }
.float-chip--a { top: -16px; left: -20px; }
.float-chip--b { bottom: 76px; right: -20px; }
.float-chip--b i { background: var(--blue); }
.float-chip--b i::after { border-color: var(--blue); }

.chat {
  position: relative; z-index: 1;
  border: 1px solid transparent; border-radius: 20px;
  background: linear-gradient(#fff, #fff) padding-box, var(--grad-border) border-box;
  box-shadow: var(--glow);
  display: flex; flex-direction: column;
  height: 580px; overflow: hidden;
}
.chat__bar { display: flex; align-items: center; justify-content: space-between; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.chat__dots { display: flex; gap: 6px; }
.chat__dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.chat__phase { display: inline-flex; align-items: center; gap: 8px; font: 500 .74rem/1 var(--mono); color: var(--blue); background: rgba(47, 107, 255, .08); padding: 7px 11px; border-radius: 8px; }
.pulse { width: 7px; height: 7px; border-radius: 50%; background: var(--blue); animation: pulse 1.8s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .3; } }
.chat__topic { padding: 12px 18px; background: var(--bg-soft); font-size: .85rem; color: var(--muted); display: flex; gap: 8px; flex-wrap: wrap; border-bottom: 1px solid var(--line); }
.chat__topic > span { font: 500 .72rem/1.6 var(--mono); text-transform: uppercase; letter-spacing: .04em; }
.chat__topic strong { color: var(--ink); font-weight: 600; }

.chat__log { flex: 1; overflow: hidden; padding: 18px; display: flex; flex-direction: column; gap: 14px; }
.msg { display: flex; gap: 10px; align-items: flex-start; animation: rise .35s ease both; }
.msg__av {
  flex: none; width: 32px; height: 32px; border-radius: 10px;
  display: grid; place-items: center; color: #fff; font: 600 .7rem/1 var(--mono);
}
.msg__body { min-width: 0; }
.msg__name { font-size: .74rem; font-weight: 600; color: var(--muted); margin-bottom: 4px; }
.msg__text { background: var(--bg-soft); border: 1px solid var(--line); padding: 10px 14px; border-radius: 4px 14px 14px 14px; font-size: .9rem; line-height: 1.5; }
.msg--you { flex-direction: row-reverse; }
.msg--you .msg__body { text-align: right; }
.msg--you .msg__text { background: linear-gradient(135deg, #2F6BFF, #3F8CFF); border-color: transparent; color: #fff; border-radius: 14px 4px 14px 14px; text-align: left; }
.msg--typing .msg__text { display: inline-flex; gap: 4px; padding: 14px; }
.msg--typing .msg__text i { width: 6px; height: 6px; border-radius: 50%; background: var(--muted); animation: blink 1.2s infinite; }
.msg--typing .msg__text i:nth-child(2) { animation-delay: .15s; }
.msg--typing .msg__text i:nth-child(3) { animation-delay: .3s; }
@keyframes blink { 0%, 80%, 100% { opacity: .25; } 40% { opacity: 1; } }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.av--blue { background: linear-gradient(135deg, #2F6BFF, #22C3EE); }
.av--green { background: linear-gradient(135deg, #14B8A6, #2DD4A7); }
.av--amber { background: linear-gradient(135deg, #F97316, #F5A524); }
.av--purple { background: linear-gradient(135deg, #6D5CF0, #A78BFA); }
.av--you { background: var(--ink); }

.chat__input {
  margin: 0 14px 14px; padding: 10px 10px 10px 16px;
  border: 1px solid var(--line); border-radius: 12px; background: var(--bg-soft);
  display: flex; align-items: center; justify-content: space-between;
  color: var(--muted); font-size: .88rem;
}
.chat__send { width: 30px; height: 30px; border-radius: 9px; background: linear-gradient(135deg, #2F6BFF, #3F8CFF); color: #fff; display: grid; place-items: center; font-weight: 700; }

/* ---------- Strip ---------- */
.strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.strip__grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.strip__item { display: flex; gap: 16px; padding: 36px 28px; }
.strip__item + .strip__item { border-left: 1px solid var(--line); }
.strip__item:first-child { padding-left: 0; }
.strip__item h3 { margin-bottom: 6px; }
.strip__item p { color: var(--muted); font-size: .93rem; }
.ico { flex: none; width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; color: #fff; }
.ico svg, .majors__ico svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.ico--blue { background: linear-gradient(135deg, #2F6BFF, #22C3EE); box-shadow: 0 8px 18px -8px rgba(47, 107, 255, .7); }
.ico--green { background: linear-gradient(135deg, #14B8A6, #2DD4A7); box-shadow: 0 8px 18px -8px rgba(20, 184, 166, .7); }
.ico--amber { background: linear-gradient(135deg, #6D5CF0, #A78BFA); box-shadow: 0 8px 18px -8px rgba(109, 92, 240, .7); }

/* ---------- Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.step {
  position: relative; border-radius: var(--radius); padding: 30px 28px;
  border: 1px solid var(--line); background: #fff;
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
.step:hover {
  border-color: transparent;
  background: linear-gradient(#fff, #fff) padding-box, var(--grad-border) border-box;
  box-shadow: var(--glow); transform: translateY(-3px);
}
.step__num {
  display: block; margin-bottom: 26px;
  font: 500 .82rem/1 var(--mono); letter-spacing: .06em; color: var(--blue);
}
.step__num::after { content: ""; display: block; width: 32px; height: 2px; margin-top: 10px; background: var(--grad); border-radius: 2px; }
.step h3 { font-size: 1.15rem; margin-bottom: 10px; }
.step p { color: var(--muted); }

/* ---------- Journey ---------- */
.journey { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.phase {
  position: relative; border-radius: var(--radius); padding: 26px;
  background: rgba(255, 255, 255, .04); border: 1px solid rgba(255, 255, 255, .1);
  transition: transform .2s ease, border-color .2s ease, background-color .2s ease;
}
.phase:hover { transform: translateY(-3px); border-color: rgba(34, 195, 238, .5); background: rgba(255, 255, 255, .07); }
.phase__top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; }
.phase__n {
  font: 600 1.8rem/1 var(--display); letter-spacing: -.03em;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.phase h3 { font-size: 1.12rem; margin-bottom: 8px; color: #fff; }
.phase p { color: rgba(255, 255, 255, .62); font-size: .94rem; }
.tag { font: 500 .68rem/1 var(--mono); letter-spacing: .04em; text-transform: uppercase; padding: 6px 9px; border-radius: 6px; }
.tag--structured { background: rgba(47, 107, 255, .18); color: #9DBBFF; }
.tag--free { background: rgba(45, 212, 167, .15); color: #6EE7C8; }

/* ---------- Group ---------- */
.group { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(32px, 6vw, 80px); align-items: start; }
.group__copy { position: sticky; top: 110px; }
.note {
  display: flex; gap: 12px; align-items: flex-start;
  margin-top: 24px; padding: 14px 16px; border-radius: 12px;
  background: rgba(47, 107, 255, .06); border: 1px solid rgba(47, 107, 255, .16);
  font-size: .92rem; color: var(--ink-2);
}
.note__ico { flex: none; width: 20px; height: 20px; border-radius: 50%; display: grid; place-items: center; background: var(--blue); color: #fff; font: 600 .7rem/1 var(--mono); margin-top: 2px; }
.people { display: grid; gap: 12px; }
.person {
  display: flex; gap: 18px; align-items: flex-start;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.person:hover { border-color: rgba(47, 107, 255, .35); box-shadow: var(--shadow); }
.person h3 { font-size: 1.02rem; }
.person__meta { font: 500 .72rem/1.4 var(--mono); color: var(--muted); margin: 4px 0 8px; text-transform: uppercase; letter-spacing: .03em; }
.person p:last-child { color: var(--muted); font-size: .94rem; }
.avatar { flex: none; width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center; color: #fff; font: 600 .8rem/1 var(--mono); }
.person--blue .avatar { background: linear-gradient(135deg, #2F6BFF, #22C3EE); }
.person--green .avatar { background: linear-gradient(135deg, #14B8A6, #2DD4A7); }
.person--amber .avatar { background: linear-gradient(135deg, #F97316, #F5A524); }
.person--purple .avatar { background: linear-gradient(135deg, #6D5CF0, #A78BFA); }
.person--you { border: 1px dashed rgba(47, 107, 255, .45); background: rgba(47, 107, 255, .04); }
.person--you .avatar { background: var(--ink); font-size: .7rem; }

/* ---------- Engine（主持人调度图） ---------- */
.engine { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 80px); align-items: center; }
.engine__visual { position: relative; }
.graph { width: 100%; max-width: 440px; margin: 0 auto; overflow: visible; }
.graph__ring { fill: none; stroke: rgba(47, 107, 255, .14); stroke-dasharray: 2 6; }
.graph__edge { stroke: #C3D2EC; stroke-width: 1.5; stroke-dasharray: 4 6; }
.graph__edge--active { stroke: url(#g-edge); stroke-width: 2.5; stroke-dasharray: 6 6; animation: flow 1s linear infinite; }
@keyframes flow { to { stroke-dashoffset: -12; } }
.graph text { font: 600 13px var(--mono); fill: #fff; text-anchor: middle; }
.graph .graph__label { font: 500 12px var(--sans); fill: var(--muted); }
.graph__dir text { font: 600 13px var(--mono); }
.graph__dir rect { filter: drop-shadow(0 8px 16px rgba(47, 107, 255, .45)); }
.graph__halo { fill: none; stroke: #F5A524; stroke-width: 2; transform-box: fill-box; transform-origin: center; animation: halo 1.8s ease-out infinite; }
@keyframes halo { from { transform: scale(.8); opacity: .9; } to { transform: scale(1.3); opacity: 0; } }

.log {
  margin: 8px auto 0; max-width: 440px;
  background: var(--ink); color: rgba(255, 255, 255, .78);
  border-radius: 14px; padding: 0 18px 16px;
  font: 500 .78rem/1.8 var(--mono);
  box-shadow: var(--glow);
}
.log__bar { display: flex; align-items: center; gap: 6px; padding: 12px 0 10px; margin-bottom: 6px; border-bottom: 1px solid rgba(255, 255, 255, .08); }
.log__bar i { width: 8px; height: 8px; border-radius: 50%; background: rgba(255, 255, 255, .18); }
.log__bar span { margin-left: 8px; color: rgba(255, 255, 255, .45); }
.log p { white-space: pre-wrap; }
.log p::before { content: "› "; color: var(--mint); }
.log b { font-weight: 500; color: #8FB3FF; }
.log em { font-style: normal; color: #FFC266; }

.engine__points { display: grid; gap: 22px; margin-top: 32px; }
.engine__points li { display: flex; gap: 16px; }
.engine__k {
  flex: none; width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center;
  background: #fff; border: 1px solid var(--line); color: var(--blue); font: 500 .76rem/1 var(--mono);
}
.engine__points h3 { margin-bottom: 4px; }
.engine__points p { color: var(--muted); font-size: .95rem; }

/* ---------- Majors ---------- */
.majors { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.majors li {
  display: flex; flex-direction: column; gap: 28px;
  padding: 24px 22px; border-radius: var(--radius);
  background: #fff; border: 1px solid var(--line);
  font: 600 1.1rem/1.25 var(--display); letter-spacing: -.015em;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.majors li:hover { transform: translateY(-3px); box-shadow: var(--glow); border-color: rgba(47, 107, 255, .3); }
.majors__ico { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; color: #fff; }
.majors li:nth-child(1) .majors__ico { background: linear-gradient(135deg, #2F6BFF, #22C3EE); }
.majors li:nth-child(2) .majors__ico { background: linear-gradient(135deg, #14B8A6, #2DD4A7); }
.majors li:nth-child(3) .majors__ico { background: linear-gradient(135deg, #F97316, #F5A524); }
.majors li:nth-child(4) .majors__ico { background: linear-gradient(135deg, #6D5CF0, #A78BFA); }

/* ---------- Teachers ---------- */
.teachers { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 80px); align-items: center; }
.checks { display: grid; gap: 12px; margin: 28px 0 32px; }
.checks li { position: relative; padding-left: 32px; }
.checks li::before {
  content: ""; position: absolute; left: 0; top: 4px; width: 20px; height: 20px; border-radius: 6px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5.5 10.5l3 3 6-7' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/16px no-repeat, var(--grad);
}
.report {
  border: 1px solid transparent; border-radius: 20px; padding: 28px;
  background: linear-gradient(#fff, #fff) padding-box, var(--grad-border) border-box;
  box-shadow: var(--glow);
}
.report__head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 22px; }
.report__title { font: 600 1.15rem/1 var(--display); }
.report__chip { font: 500 .7rem/1 var(--mono); color: var(--purple); background: rgba(124, 108, 240, .1); padding: 7px 10px; border-radius: 6px; text-transform: uppercase; letter-spacing: .03em; }
.report__stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 24px; }
.report__stats div { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 12px; padding: 14px; display: grid; gap: 4px; }
.report__stats b { font: 600 1.45rem/1 var(--display); letter-spacing: -.02em; }
.report__stats span { font: 500 .7rem/1 var(--mono); color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.report__bars { display: grid; gap: 14px; margin-bottom: 22px; }
.bar { display: grid; gap: 6px; font-size: .85rem; font-weight: 500; }
.bar i { display: block; height: 6px; border-radius: 999px; background: var(--line); position: relative; overflow: hidden; }
.bar i::after { content: ""; position: absolute; inset: 0 auto 0 0; width: var(--v); background: var(--grad); border-radius: inherit; }
.report__quote { font-size: .93rem; line-height: 1.55; color: var(--ink-2); background: var(--bg-soft); border-radius: 10px; padding: 12px 14px; }

/* ---------- FAQ ---------- */
.faq { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(32px, 6vw, 80px); align-items: start; }
.faq__list { display: grid; gap: 10px; }
details { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 0 22px; transition: border-color .2s; }
details[open] { border-color: rgba(47, 107, 255, .4); }
summary {
  list-style: none; cursor: pointer; padding: 20px 32px 20px 0; position: relative;
  font-weight: 600;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "+"; position: absolute; right: 0; top: 50%; transform: translateY(-50%);
  font: 400 1.3rem/1 var(--mono); color: var(--blue); transition: transform .2s;
}
details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
details p { color: var(--muted); padding-bottom: 20px; }

/* ---------- Contact ---------- */
.contact { display: grid; grid-template-columns: 1.6fr 1fr; gap: 20px; align-items: stretch; }
.scholar {
  border: 1px solid transparent; border-radius: 20px; padding: 32px;
  background: linear-gradient(#fff, #fff) padding-box, var(--grad-border) border-box;
  box-shadow: var(--shadow);
}
.scholar__head { display: flex; gap: 18px; align-items: center; margin-bottom: 20px; }
.scholar__avatar {
  flex: none; width: 64px; height: 64px; border-radius: 18px; display: grid; place-items: center;
  background: var(--grad); color: #fff; font: 600 1.05rem/1 var(--display); letter-spacing: .02em;
}
.scholar__role { font: 500 .72rem/1.2 var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--blue); margin-bottom: 4px; }
.scholar h3 { font-size: 1.35rem; }
.scholar__title { color: var(--muted); font-size: .92rem; margin-top: 2px; }
.scholar__bio { color: var(--ink-2); }
.scholar__tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 22px; }
.scholar__tags li { font: 500 .72rem/1 var(--mono); padding: 7px 10px; border-radius: 6px; background: rgba(47, 107, 255, .08); color: var(--blue-ink); }
.scholar__cv { display: grid; gap: 10px; margin-bottom: 26px; padding-top: 18px; border-top: 1px solid var(--line); }
.scholar__cv li { display: grid; grid-template-columns: 96px 1fr; gap: 12px; font-size: .9rem; }
.scholar__cv li span:first-child { font: 500 .76rem/1.6 var(--mono); color: var(--muted); }
.btn__ico { width: 16px; height: 16px; fill: currentColor; }

.company {
  position: relative; overflow: hidden; border-radius: 20px; padding: 32px; color: #fff;
  background: var(--ink); display: flex; flex-direction: column;
}
.company::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(60% 50% at 100% 0%, rgba(47, 107, 255, .5), transparent 70%),
    radial-gradient(50% 40% at 0% 100%, rgba(45, 212, 167, .3), transparent 70%);
}
.company > * { position: relative; }
.company__label { font: 500 .72rem/1.2 var(--mono); text-transform: uppercase; letter-spacing: .06em; color: #8FB3FF; }
.company__name {
  font-size: clamp(1.8rem, 3vw, 2.4rem); margin: 10px 0 14px; letter-spacing: -.03em;
  background: linear-gradient(120deg, #fff 30%, #8FD8FF); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.company__text { color: rgba(255, 255, 255, .7); }
.company__link {
  margin-top: auto; padding-top: 28px;
  display: flex; align-items: center; justify-content: space-between;
  text-decoration: none; font: 600 1.05rem/1 var(--display);
}
.company__link span:last-child {
  width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center;
  background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .18);
  transition: background-color .2s ease, transform .2s ease;
}
.company__link:hover span:last-child { background: var(--blue); transform: translate(2px, -2px); }

/* ---------- CTA ---------- */
.cta { position: relative; overflow: hidden; color: #fff; padding: clamp(72px, 10vw, 120px) 0; background: var(--ink); }
.cta::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(45% 80% at 50% 120%, rgba(47, 107, 255, .55), transparent 70%),
    radial-gradient(30% 50% at 85% 0%, rgba(45, 212, 167, .25), transparent 70%),
    radial-gradient(30% 50% at 10% 10%, rgba(34, 195, 238, .2), transparent 70%);
}
.cta::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(rgba(255, 255, 255, .14) 1px, transparent 1px);
  background-size: 22px 22px;
  -webkit-mask-image: radial-gradient(60% 70% at 50% 50%, #000, transparent);
  mask-image: radial-gradient(60% 70% at 50% 50%, #000, transparent);
}
.cta__inner { position: relative; z-index: 1; text-align: center; display: flex; flex-direction: column; align-items: center; }
.cta h2 { font-size: clamp(1.9rem, 4.2vw, 3rem); max-width: 16em; }
.cta p { margin-top: 14px; font-size: 1.06rem; color: rgba(255, 255, 255, .7); }

/* ---------- Footer ---------- */
.footer { background: #fff; border-top: 1px solid var(--line); color: var(--muted); padding: 36px 0; font-size: .88rem; }
.footer__inner { display: grid; grid-template-columns: auto 1fr auto auto; gap: 16px 32px; align-items: center; }
.brand--footer .brand__name { color: var(--ink); font-size: 1rem; }
.footer__links { display: flex; gap: 20px; }
.footer__links a { text-decoration: none; }
.footer__links a:hover { color: var(--blue); }
.footer__copy { font-family: var(--mono); font-size: .78rem; }

/* ---------- 404 ---------- */
.notfound { min-height: 100vh; display: grid; align-items: center; }
.notfound__inner { position: relative; z-index: 1; width: 100%; }
.notfound__code {
  margin-top: 56px;
  font: 700 clamp(5rem, 16vw, 9rem)/1 var(--display); letter-spacing: -.05em;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.notfound h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); margin-top: 12px; }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .nav__links { display: none; }
  .nav__toggle { display: block; }
  .hero__grid, .group, .teachers, .faq, .engine, .contact { grid-template-columns: 1fr; }
  .group__copy { position: static; }
  .journey { grid-template-columns: repeat(2, 1fr); }
  .majors { grid-template-columns: repeat(2, 1fr); }
  .footer__inner { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  body { font-size: 16px; }
  .nav__actions .btn { display: none; }
  .strip__grid, .steps, .journey { grid-template-columns: 1fr; }
  .strip__item { padding: 24px 0; }
  .strip__item + .strip__item { border-left: 0; border-top: 1px solid var(--line); }
  .hero__facts { grid-template-columns: repeat(2, auto); row-gap: 16px; }
  .hero__facts li:nth-child(3) { padding-left: 0; border-left: 0; }
  .chat { height: 480px; }
  .float-chip--a { left: 8px; }
  .float-chip--b { right: 8px; }
  .hero__cta .btn { flex: 1 1 auto; }
  .majors li { font-size: 1rem; padding: 20px 16px; gap: 18px; }
  .footer__links { flex-wrap: wrap; }
  .scholar, .company { padding: 24px; }
  .scholar__cv li { grid-template-columns: 1fr; gap: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}