@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Manrope:wght@400;500;600;700;800&display=swap');

:root {
  --navy: #122a4a;
  --ink: #18304f;
  --muted: #6e7c90;
  --soft: #f5f7fa;
  --paper: #fbfcfd;
  --line: #dce3eb;
  --line-dark: #bdc9d8;
  --coral: #e77858;
  --coral-soft: #f8e5dd;
  --blue-soft: #e9f0f7;
  --serif: Georgia, 'Songti SC', 'STSong', serif;
  --sans: 'Manrope', 'Avenir Next', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --mono: 'DM Mono', 'SFMono-Regular', Consolas, monospace;
  --shadow: 0 25px 70px rgba(18, 42, 74, 0.11);
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 15px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
body, button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
button { border: 0; font: inherit; color: inherit; cursor: pointer; }
img { display: block; max-width: 100%; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.site-shell { overflow: hidden; }
.section-inner { width: min(1160px, calc(100% - 64px)); margin: 0 auto; }
.section-pad { padding: 136px 0; }

.site-header { width: min(1240px, calc(100% - 48px)); height: 82px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid rgba(220, 227, 235, 0.8); }
.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand-mark { width: 27px; height: 27px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 3px; align-items: end; }
.brand-mark span { display: block; background: var(--coral); border-radius: 2px; }
.brand-mark span:nth-child(1) { height: 12px; opacity: .62; }
.brand-mark span:nth-child(2) { height: 20px; background: var(--navy); }
.brand-mark span:nth-child(3) { height: 27px; opacity: .82; }
.brand-copy { display: flex; flex-direction: column; line-height: 1; gap: 5px; }
.brand-copy strong { font-size: 15px; letter-spacing: .06em; }
.brand-copy small { font-family: var(--mono); color: var(--muted); font-size: 8px; letter-spacing: .08em; }
.primary-nav { display: flex; align-items: center; gap: 28px; color: var(--muted); font-size: 13px; }
.primary-nav a { transition: color .2s ease; }
.primary-nav a[aria-current="page"] { color: var(--navy); font-weight: 600; }
.primary-nav a:hover { color: var(--navy); }
.primary-nav .nav-cta { padding: 10px 15px; border: 1px solid var(--line-dark); color: var(--navy); border-radius: 999px; margin-left: 7px; }
.primary-nav .nav-cta span, .button span { color: var(--coral); margin-left: 8px; }
.nav-toggle { display: none; background: transparent; padding: 12px 0 12px 12px; }
.nav-toggle span:not(.sr-only) { width: 22px; height: 1px; display: block; background: var(--navy); margin: 5px 0; }

.hero { width: min(1240px, calc(100% - 48px)); margin: 0 auto; min-height: 700px; display: grid; grid-template-columns: .92fr 1.08fr; align-items: center; gap: 68px; padding-top: 110px; padding-bottom: 110px; }
.eyebrow { margin: 0 0 22px; font-family: var(--mono); color: var(--muted); font-size: 10px; letter-spacing: .12em; line-height: 1.5; }
.eyebrow-dot { width: 6px; height: 6px; margin-right: 8px; display: inline-block; background: var(--coral); border-radius: 50%; vertical-align: 1px; }
h1, h2, h3, p { margin-top: 0; }
h1, h2 { letter-spacing: -.055em; line-height: 1.08; font-weight: 600; }
h1 { max-width: 660px; margin-bottom: 29px; font-size: clamp(44px, 5vw, 73px); }
h1 em, h2 span { color: var(--coral); font-family: var(--serif); font-weight: 400; font-style: italic; letter-spacing: -.08em; }
.hero-lede { max-width: 500px; color: var(--muted); font-size: 16px; line-height: 1.95; }
.hero-actions { display: flex; align-items: center; gap: 25px; margin-top: 37px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 19px; border-radius: 999px; font-size: 13px; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); box-shadow: 0 9px 22px rgba(18, 42, 74, .12); }
.button-primary { background: var(--navy); color: #fff; }
.button-primary span { color: #f7ad94; }
.button-dark { padding-left: 22px; padding-right: 22px; background: var(--navy); color: #fff; }
.text-link { display: inline-flex; align-items: center; gap: 9px; color: var(--navy); font-size: 13px; font-weight: 600; }
.text-link span { color: var(--coral); font-size: 18px; transition: transform .2s ease; }
.text-link:hover span { transform: translateX(4px); }
.hero-notes { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 51px; color: var(--muted); font-family: var(--mono); font-size: 10px; letter-spacing: .04em; }
.hero-notes span { display: inline-flex; align-items: center; gap: 8px; }
.hero-notes span::before { content: ''; width: 4px; height: 4px; display: block; background: var(--line-dark); border-radius: 50%; }
.hero-visual { position: relative; min-height: 555px; }
.hero-image-wrap { position: absolute; inset: 0 0 41px 30px; overflow: hidden; background: var(--blue-soft); border-radius: 3px 24px 3px 24px; box-shadow: var(--shadow); }
.hero-image-wrap img { width: 100%; height: 100%; object-fit: cover; object-position: 65% center; }
.image-wash { position: absolute; inset: 0; background: linear-gradient(100deg, rgba(18, 42, 74, .2), transparent 50%, rgba(247, 251, 253, .04)); pointer-events: none; }
.signal-card { position: absolute; z-index: 2; left: 0; bottom: 0; width: min(288px, 60%); padding: 20px 19px 16px; background: rgba(251, 252, 253, .96); border: 1px solid rgba(255,255,255,.7); box-shadow: 0 20px 50px rgba(18, 42, 74, .18); border-radius: 3px 17px 3px 17px; }
.signal-card-top, .signal-footer, .window-bar, .student-panel-head, .console-head { display: flex; align-items: center; justify-content: space-between; font-family: var(--mono); font-size: 9px; letter-spacing: .08em; color: var(--muted); }
.signal-live { color: #4c8e75; }
.signal-live i { width: 5px; height: 5px; display: inline-block; margin-right: 5px; border-radius: 50%; background: #5aae8b; box-shadow: 0 0 0 4px rgba(90, 174, 139, .12); }
.signal-main { display: flex; align-items: center; gap: 14px; margin-top: 22px; }
.signal-number { font-family: var(--mono); color: var(--coral); font-size: 23px; }
.signal-main strong { font-size: 13px; font-weight: 600; }
.signal-main p { margin: 2px 0 0; color: var(--muted); font-size: 11px; }
.signal-bars { height: 50px; display: flex; align-items: end; gap: 6px; margin: 17px 0 12px; padding: 0 4px; border-bottom: 1px solid var(--line); }
.signal-bars span { width: 16%; height: var(--bar); display: block; background: var(--blue-soft); border-top: 2px solid var(--navy); }
.signal-bars span:nth-child(2n) { background: var(--coral-soft); border-color: var(--coral); }
.signal-footer b { color: var(--navy); font-family: var(--sans); font-size: 13px; }
.hero-caption { position: absolute; right: 5px; bottom: 10px; display: flex; gap: 13px; color: var(--muted); font-family: var(--mono); font-size: 9px; letter-spacing: .04em; }
.hero-caption span:first-child { color: var(--coral); }

.trust-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #f9fafb; }
.trust-inner { min-height: 74px; display: flex; align-items: center; gap: 24px; }
.trust-label { color: var(--muted); font-family: var(--mono); font-size: 9px; letter-spacing: .11em; }
.trust-line { width: 48px; height: 1px; background: var(--line-dark); }
.trust-inner p { margin: 0; color: var(--navy); font-size: 14px; }
.trust-arrow { margin-left: auto; color: var(--coral); font-size: 18px; }

.problem-grid { display: grid; grid-template-columns: .78fr 1.22fr; gap: 120px; }
.section-intro h2, .loop h2, .product-copy h2, .teacher-copy h2, .student-copy h2, .architecture-heading h2, .package-intro h2, .agent-copy h2, .case-copy h2, .trust-heading h2, .contact h2 { margin-bottom: 23px; font-size: clamp(39px, 4vw, 58px); }
.section-intro > p:last-child, .product-copy > p, .teacher-copy > p, .student-copy > p, .architecture-heading > p, .package-intro > p, .agent-copy > p, .case-copy > p, .contact-actions > p { max-width: 465px; margin-bottom: 0; color: var(--muted); line-height: 1.9; }
.problem-list { padding-top: 20px; }
.problem-row { min-height: 135px; display: grid; grid-template-columns: 46px 1fr 24px; gap: 16px; align-items: start; padding: 26px 0; border-top: 1px solid var(--line); }
.problem-row:last-child { border-bottom: 1px solid var(--line); }
.row-index, .feature-list > div > span, .trust-items > div > span { color: var(--coral); font-family: var(--mono); font-size: 10px; }
.problem-row strong { display: block; margin-bottom: 6px; font-size: 18px; font-weight: 600; }
.problem-row p { max-width: 400px; margin: 0; color: var(--muted); font-size: 13px; }
.row-mark { color: var(--line-dark); font-size: 20px; }

.loop { background: var(--soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.loop-heading { display: flex; justify-content: space-between; align-items: end; gap: 60px; }
.loop-heading-copy { max-width: 330px; margin: 0 0 5px; color: var(--muted); line-height: 1.9; }
.loop-track { position: relative; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); column-gap: 44px; align-items: start; margin-top: 90px; }
.loop-step { position: relative; z-index: 1; min-width: 0; }
.loop-step:not(:last-child)::after { position: absolute; z-index: -1; top: 59px; left: 56px; width: calc(100% - 12px); height: 1px; background: var(--line-dark); content: ''; }
.loop-step:not(:last-child)::before { position: absolute; z-index: -1; top: 55px; right: -1px; width: 8px; height: 8px; border-top: 1.5px solid var(--coral); border-right: 1.5px solid var(--coral); content: ''; transform: rotate(45deg); }
.step-number { color: var(--coral); font-family: var(--mono); font-size: 10px; }
.step-node { width: 56px; height: 56px; display: flex; align-items: center; justify-content: center; margin: 16px 0 18px; border: 1px solid var(--line-dark); border-radius: 50%; background: var(--paper); color: var(--navy); }
.loop-step.active .step-node { border-color: var(--coral); background: var(--coral-soft); }
.node-glyph { position: relative; display: block; width: 20px; height: 20px; color: currentColor; }
.node-glyph::before, .node-glyph::after { position: absolute; display: block; content: ''; }
.node-glyph--judgment::before { top: 11px; left: 1px; width: 18px; height: 1.5px; background: currentColor; transform: rotate(-45deg); transform-origin: left center; }
.node-glyph--judgment::after { top: 1px; right: 0; width: 7px; height: 7px; border-top: 1.5px solid currentColor; border-right: 1.5px solid currentColor; transform: rotate(45deg); }
.node-glyph--support::before { top: 9px; left: 2px; width: 16px; height: 1.5px; background: currentColor; }
.node-glyph--support::after { top: 2px; left: 9px; width: 1.5px; height: 16px; background: currentColor; }
.node-glyph--tracking::before { top: 5px; left: 1px; width: 18px; height: 10px; border-top: 1.5px solid currentColor; border-radius: 50%; transform: rotate(-8deg); }
.node-glyph--tracking::after { top: 10px; left: 1px; width: 18px; height: 10px; border-top: 1.5px solid currentColor; border-radius: 50%; transform: rotate(8deg); }
.node-glyph--feedback::before { top: 2px; left: 2px; width: 15px; height: 15px; border: 1.5px solid currentColor; border-left-color: transparent; border-radius: 50%; transform: rotate(-35deg); }
.node-glyph--feedback::after { top: 1px; right: 0; width: 6px; height: 6px; border-top: 1.5px solid currentColor; border-right: 1.5px solid currentColor; transform: rotate(35deg); }
.loop-step h3 { margin-bottom: 8px; font-size: 20px; font-weight: 600; }
.loop-step p { max-width: 215px; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.75; }
.loop-foot { display: flex; align-items: center; gap: 17px; margin-top: 77px; color: var(--muted); font-family: var(--mono); font-size: 9px; letter-spacing: .06em; }
.loop-foot div { flex: 1; height: 1px; background: var(--line); }

.product-grid { display: grid; grid-template-columns: .72fr 1.28fr; align-items: center; gap: 95px; }
.product-copy .text-link, .case-copy .text-link { margin-top: 31px; }
.product-window { overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 25px 75px rgba(18, 42, 74, .1); }
.window-bar { height: 45px; padding: 0 17px; border-bottom: 1px solid var(--line); font-size: 8px; }
.window-dots { display: flex; gap: 5px; }
.window-dots i { width: 6px; height: 6px; display: block; background: var(--line-dark); border-radius: 50%; }
.window-dots i:first-child { background: var(--coral); }
.window-status { color: #5a9b7e; }
.window-body { min-height: 390px; display: grid; grid-template-columns: 145px 1fr; }
.window-sidebar { display: flex; flex-direction: column; gap: 4px; padding: 22px 16px; background: #f6f8fa; border-right: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.window-sidebar span:not(.side-divider) { padding: 8px 10px; border-radius: 5px; }
.window-sidebar .side-active { background: var(--navy); color: #fff; }
.side-divider { height: 1px; margin: 16px 10px 7px; background: var(--line); }
.workspace-main { padding: 25px 27px 20px; }
.workspace-heading, .workspace-footer { display: flex; align-items: center; justify-content: space-between; }
.mini-label { color: var(--coral); font-family: var(--mono); font-size: 8px; letter-spacing: .1em; }
.workspace-heading h3 { margin: 5px 0 0; font-size: 17px; font-weight: 600; }
.tiny-button { padding: 7px 10px; background: var(--blue-soft); color: var(--navy); border-radius: 4px; font-size: 10px; }
.workspace-summary { display: grid; grid-template-columns: repeat(3, 1fr); gap: 9px; margin: 25px 0 19px; }
.workspace-summary > div { padding: 12px 12px 11px; border: 1px solid var(--line); border-radius: 5px; }
.workspace-summary span { display: block; color: var(--muted); font-size: 9px; }
.workspace-summary b { display: block; margin-top: 3px; font-family: var(--mono); font-size: 15px; font-weight: 500; }
.question-list { border-top: 1px solid var(--line); }
.question-item { min-height: 62px; display: grid; grid-template-columns: 30px 1fr 22px; align-items: center; gap: 8px; border-bottom: 1px solid var(--line); }
.q-number { color: var(--muted); font-family: var(--mono); font-size: 9px; }
.question-item strong { display: block; font-size: 11px; font-weight: 600; }
.question-item p { margin: 2px 0 0; color: var(--muted); font-size: 9px; }
.q-check, .q-flag { width: 17px; height: 17px; display: flex; align-items: center; justify-content: center; border-radius: 50%; font-family: var(--mono); font-size: 9px; }
.q-check { background: #e3f1eb; color: #4c9875; }
.q-flag { background: var(--coral-soft); color: var(--coral); }
.workspace-footer { margin-top: 20px; font-size: 10px; color: var(--muted); }
.footer-dot { width: 5px; height: 5px; display: inline-block; margin-right: 5px; border-radius: 50%; background: #5a9b7e; }
.publish-button { padding: 8px 12px; background: var(--coral); color: #fff; border-radius: 4px; font-size: 10px; }

.teacher { background: var(--navy); color: #fff; }
.teacher-grid { display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: 112px; }
.teacher .eyebrow, .agent .eyebrow { color: #9eb0c5; }
.teacher-copy > p, .agent-copy > p { color: #a7b5c5; }
.teacher-copy h2 span, .agent-copy h2 span { color: #f1a88f; }
.teacher-visual { position: relative; min-height: 430px; padding: 31px 27px 27px; }
.teacher-note { position: relative; z-index: 2; display: flex; justify-content: space-between; color: #8ea3bb; font-family: var(--mono); font-size: 9px; letter-spacing: .09em; }
.teacher-note span { color: #f1a88f; }
.teacher-board { position: relative; z-index: 2; margin-top: 28px; padding: 22px 23px 17px; background: #f7fafc; color: var(--ink); border-radius: 4px 21px 4px 21px; box-shadow: 0 28px 65px rgba(0, 0, 0, .22); transform: rotate(-2deg); }
.board-top { display: grid; grid-template-columns: 1fr 1.3fr 1fr; align-items: end; gap: 15px; padding-bottom: 20px; border-bottom: 1px solid var(--line); color: var(--muted); font-family: var(--mono); font-size: 9px; }
.board-top b { color: var(--navy); font-family: var(--sans); font-size: 16px; font-weight: 600; }
.board-date { text-align: right; }
.board-rows { padding: 11px 0; }
.board-row { display: grid; grid-template-columns: 60px 1fr auto; gap: 10px; align-items: center; min-height: 57px; border-bottom: 1px solid var(--line); }
.board-row > span { color: var(--muted); font-family: var(--mono); font-size: 9px; }
.board-row strong { font-size: 11px; font-weight: 600; }
.board-row i { padding: 4px 6px; color: #4c9875; background: #e3f1eb; border-radius: 3px; font-size: 8px; font-style: normal; }
.board-row i.warm { color: var(--coral); background: var(--coral-soft); }
.board-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 12px; color: var(--muted); font-size: 10px; }
.board-bottom button { color: var(--coral); background: transparent; font-size: 10px; font-weight: 600; }
.teacher-orbit { position: absolute; border: 1px solid rgba(160, 182, 204, .28); border-radius: 50%; }
.orbit-one { width: 345px; height: 345px; top: 5px; left: -30px; }
.orbit-two { width: 450px; height: 450px; top: -48px; left: -80px; border-color: rgba(160, 182, 204, .12); }
.feature-list { margin-top: 40px; }
.feature-list > div { display: grid; grid-template-columns: 29px 1fr; gap: 9px; padding: 17px 0; border-top: 1px solid rgba(183, 201, 220, .2); }
.feature-list > div strong { font-size: 14px; font-weight: 600; }
.feature-list > div p { grid-column: 2; margin: 1px 0 0; color: #91a4ba; font-size: 12px; line-height: 1.65; }

.student { background: #f7f0eb; }
.student-grid { display: grid; grid-template-columns: .84fr 1.16fr; gap: 120px; align-items: center; }
.student-quote { max-width: 390px; margin-top: 38px; padding-left: 17px; border-left: 2px solid var(--coral); color: var(--navy); font-family: var(--serif); font-size: 18px; font-style: italic; line-height: 1.6; }
.student-panel { padding: 23px 24px 20px; background: rgba(255,255,255,.64); border: 1px solid rgba(228, 208, 196, .95); border-radius: 3px 22px 3px 22px; }
.student-panel-head { padding-bottom: 17px; border-bottom: 1px solid #e5d7cf; font-size: 9px; }
.student-panel-head span:first-child { color: var(--navy); }
.progress-map { position: relative; display: flex; justify-content: space-between; align-items: start; padding: 57px 30px 44px; }
.map-line { position: absolute; top: 77px; left: 55px; right: 55px; height: 1px; background: #d8c4b8; }
.map-node { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; gap: 10px; color: var(--muted); font-size: 11px; }
.map-node > span { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; background: var(--paper); border: 1px solid #c9b3a6; border-radius: 50%; color: var(--navy); font-family: var(--mono); font-size: 11px; }
.map-node.done > span { color: #fff; background: var(--navy); border-color: var(--navy); }
.map-node.current > span { width: 56px; height: 56px; margin-top: -8px; color: #fff; background: var(--coral); border-color: var(--coral); box-shadow: 0 0 0 8px rgba(231, 120, 88, .13); }
.map-node.current { color: var(--navy); font-weight: 600; }
.map-node.next > span { border-style: dashed; color: var(--coral); }
.student-modes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; padding: 0 0 17px; }
.student-modes > div { padding: 10px 11px; background: rgba(255,255,255,.52); border: 1px solid #e5d7cf; border-radius: 4px; }
.student-modes small { display: block; color: var(--muted); font-size: 9px; }
.student-modes strong { display: block; margin-top: 3px; color: var(--navy); font-size: 13px; font-weight: 600; }
.student-panel-bottom { display: flex; align-items: end; justify-content: space-between; padding-top: 17px; border-top: 1px solid #e5d7cf; }
.student-panel-bottom small { display: block; color: var(--muted); font-size: 10px; }.student-panel-bottom strong { display: block; margin-top: 4px; color: var(--navy); font-size: 14px; }
.sparkline { width: 190px; height: 40px; display: flex; align-items: end; gap: 8px; padding: 0 2px 4px; border-bottom: 1px solid #d8c4b8; transform: skewY(-6deg); }
.sparkline span { flex: 1; display: block; background: var(--coral); opacity: .5; }.sparkline span:nth-child(1) { height: 22%; }.sparkline span:nth-child(2) { height: 35%; }.sparkline span:nth-child(3) { height: 28%; }.sparkline span:nth-child(4) { height: 53%; }.sparkline span:nth-child(5) { height: 48%; }.sparkline span:nth-child(6) { height: 76%; }.sparkline span:nth-child(7) { height: 94%; opacity: 1; }

.architecture { border-bottom: 1px solid var(--line); }
.architecture-heading { display: grid; grid-template-columns: 1fr 1fr; column-gap: 100px; align-items: end; }.architecture-heading .eyebrow { grid-column: 1 / -1; }.architecture-heading > p { margin-bottom: 7px; }
.architecture-map { display: grid; grid-template-columns: 1fr 40px 1fr 40px 1fr; align-items: center; margin-top: 76px; }
.arch-column { min-height: 270px; padding: 25px 24px 22px; border: 1px solid var(--line); border-radius: 4px 20px 4px 20px; }.arch-column.foundation { background: #f8fafc; }.arch-column.intelligence { background: var(--blue-soft); border-color: #ccdae8; }.arch-column.agent { background: var(--coral-soft); border-color: #efcbbd; }
.arch-number { display: block; color: var(--coral); font-family: var(--mono); font-size: 10px; }.arch-column small { display: block; margin-top: 26px; color: var(--muted); font-family: var(--mono); font-size: 8px; letter-spacing: .08em; }.arch-column h3 { margin: 7px 0 9px; font-size: 20px; font-weight: 600; }.arch-column p { min-height: 70px; margin: 0; color: var(--muted); font-size: 12px; line-height: 1.7; }.arch-tags { display: flex; flex-wrap: wrap; gap: 6px; padding-top: 16px; border-top: 1px solid rgba(184, 198, 212, .7); }.arch-tags span { padding: 3px 7px; border: 1px solid var(--line-dark); border-radius: 999px; color: var(--muted); font-family: var(--mono); font-size: 8px; }.agent .arch-tags span { border-color: #dfa995; }
.arch-connector { display: flex; flex-direction: column; align-items: center; gap: 8px; color: var(--coral); font-family: var(--mono); }.arch-connector span { font-size: 18px; }.arch-connector i { width: 1px; height: 42px; background: var(--line-dark); }
.architecture-foot { display: flex; justify-content: space-between; margin-top: 34px; color: var(--muted); font-family: var(--mono); font-size: 9px; letter-spacing: .05em; }

.packages { background: #fbfcfd; }
.package-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 100px; align-items: center; }.package-tabs { display: flex; border-bottom: 1px solid var(--line); }.package-tab { position: relative; flex: 1; padding: 0 7px 15px; background: transparent; color: var(--muted); font-size: 12px; white-space: nowrap; }.package-tab::after { content: ''; position: absolute; bottom: -1px; left: 12%; right: 12%; height: 2px; background: transparent; }.package-tab.is-selected { color: var(--navy); font-weight: 600; }.package-tab.is-selected::after { background: var(--coral); }.package-detail { min-height: 295px; padding: 29px 28px; border: 1px solid var(--line); border-top: 0; background: var(--soft); border-radius: 0 0 15px 15px; }.package-detail-meta { display: flex; justify-content: space-between; color: var(--coral); font-family: var(--mono); font-size: 9px; letter-spacing: .06em; }.package-detail-meta span:last-child { color: var(--muted); }.package-detail h3 { margin: 19px 0 8px; font-size: 27px; font-weight: 600; }.package-detail p { max-width: 450px; margin-bottom: 20px; color: var(--muted); font-size: 13px; }.package-items { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 26px; }.package-items span { padding: 5px 9px; background: #fff; border: 1px solid var(--line); border-radius: 3px; color: var(--navy); font-size: 10px; }

.agent { padding-top: 38px; }.agent-panel { display: grid; grid-template-columns: .92fr 1.08fr; gap: 110px; align-items: center; padding: 65px 76px; background: var(--navy); border-radius: 4px 28px 4px 28px; }.agent-footnote { display: flex; align-items: center; gap: 10px; margin-top: 32px; color: #cfdae6; font-size: 11px; }.approval-mark { width: 19px; height: 19px; display: flex; align-items: center; justify-content: center; color: var(--navy); background: #a7d3be; border-radius: 50%; font-size: 11px; }.agent-console { overflow: hidden; border: 1px solid rgba(203, 222, 239, .25); border-radius: 5px 16px 5px 16px; background: #f7fafc; color: var(--ink); box-shadow: 0 25px 55px rgba(0,0,0,.16); }.console-head { padding: 14px 17px; border-bottom: 1px solid var(--line); }.console-head span:first-child { color: var(--coral); }.console-chat { padding: 20px; }.chat-user { max-width: 78%; margin-left: auto; padding: 11px 13px; background: var(--blue-soft); border-radius: 12px 3px 12px 12px; font-size: 12px; }.chat-agent { display: flex; gap: 10px; margin-top: 20px; }.agent-avatar { width: 27px; height: 27px; flex: 0 0 auto; display: flex; align-items: center; justify-content: center; background: var(--coral); color: #fff; border-radius: 50%; font-family: var(--mono); font-size: 11px; }.chat-agent small { color: var(--muted); font-family: var(--mono); font-size: 9px; }.chat-agent p { margin: 6px 0 13px; color: var(--ink); font-size: 12px; line-height: 1.75; }.chat-agent button { padding: 8px 10px; background: var(--coral-soft); color: var(--coral); border-radius: 3px; font-size: 10px; font-weight: 600; }

.case { background: var(--soft); border-top: 1px solid var(--line); }.case-grid { display: grid; grid-template-columns: .86fr 1.14fr; gap: 115px; align-items: center; }.case-stamp { position: relative; min-height: 365px; display: flex; flex-direction: column; justify-content: space-between; padding: 26px; background: var(--coral); color: #fff; border-radius: 4px 28px 4px 28px; }.case-stamp span { font-family: var(--mono); font-size: 10px; letter-spacing: .1em; }.case-stamp strong { align-self: end; margin-top: auto; margin-bottom: 25px; font-size: 30px; line-height: 1.15; font-weight: 500; letter-spacing: -.05em; }.case-stamp i { align-self: end; font-family: var(--serif); font-size: 38px; font-style: normal; line-height: 1; }.case-copy h2 { font-size: clamp(34px, 3.4vw, 49px); }.case-process { display: flex; align-items: center; gap: 13px; margin-top: 31px; color: var(--navy); font-family: var(--mono); font-size: 10px; }.case-process b { color: var(--coral); font-size: 15px; font-weight: 400; }

.trust-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 115px; }.trust-items > div { display: grid; grid-template-columns: 30px 1fr; gap: 9px; padding: 22px 0; border-top: 1px solid var(--line); }.trust-items > div:last-child { border-bottom: 1px solid var(--line); }.trust-items strong { font-size: 15px; font-weight: 600; }.trust-items p { grid-column: 2; margin: 2px 0 0; color: var(--muted); font-size: 12px; }
.contact { padding-top: 0; }.contact-panel { display: grid; grid-template-columns: 1fr .75fr; gap: 100px; padding: 71px 76px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }.contact h2 { margin-bottom: 0; font-size: clamp(39px, 4vw, 56px); }.contact-actions { display: flex; flex-direction: column; align-items: flex-start; justify-content: center; }.contact-actions p { margin-bottom: 25px; }
.site-footer { padding: 27px 0 35px; }.footer-inner, .footer-brand, .footer-links { display: flex; align-items: center; }.footer-inner { justify-content: space-between; }.footer-brand { gap: 11px; color: var(--muted); font-family: var(--mono); font-size: 9px; letter-spacing: .07em; }.footer-brand .brand-mark { transform: scale(.72); transform-origin: left center; width: 20px; }.footer-links { gap: 25px; color: var(--muted); font-family: var(--mono); font-size: 9px; }.footer-records { display: inline-flex; gap: 12px; white-space: nowrap; }.footer-links a:hover { color: var(--navy); }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .75s ease, transform .75s cubic-bezier(.2,.8,.2,1); }.reveal-delay-1 { transition-delay: .12s; }.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 980px) {
  .section-pad { padding: 100px 0; }.hero { gap: 35px; padding-top: 80px; padding-bottom: 95px; }.problem-grid, .product-grid, .student-grid, .case-grid, .trust-grid { gap: 65px; }.teacher-grid, .package-grid { gap: 55px; }.agent-panel, .contact-panel { padding: 52px 45px; gap: 55px; }.primary-nav { gap: 17px; }.primary-nav .nav-cta { margin-left: 0; }.loop-track { column-gap: 26px; }.loop-step h3 { font-size: 18px; }.loop-step p { font-size: 12px; }
}

@media (max-width: 980px) {
  .loop-heading { display: block; }.loop-heading-copy { margin-top: 24px; }.loop-track { display: block; margin-top: 55px; }.loop-track::before { position: absolute; top: 28px; bottom: 28px; left: 27px; width: 1px; height: auto; background: var(--line-dark); content: ''; }.loop-track::after { position: absolute; bottom: 0; left: 23px; width: 8px; height: 8px; border-top: 1.5px solid var(--coral); border-right: 1.5px solid var(--coral); content: ''; transform: rotate(135deg); }.loop-step { display: grid; grid-template-columns: 48px 1fr; column-gap: 15px; min-height: 115px; }.loop-step:not(:last-child)::before, .loop-step:not(:last-child)::after { display: none; }.loop-step:last-child { min-height: 0; }.step-number { grid-row: 1 / 4; padding-top: 19px; }.step-node { grid-row: 1 / 4; margin: 0; }.loop-step h3 { grid-column: 2; margin: 8px 0 2px; }.loop-step p { grid-column: 2; max-width: 380px; }.loop-foot { margin-top: 36px; }.loop-foot div { display: none; }
}

@media (max-width: 760px) {
  .section-inner { width: min(100% - 40px, 560px); }.section-pad { padding: 78px 0; }.site-header { width: calc(100% - 40px); height: 72px; }.nav-toggle { display: block; }.primary-nav { position: absolute; z-index: 10; top: 72px; left: 20px; right: 20px; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 12px; background: rgba(251,252,253,.98); border: 1px solid var(--line); border-radius: 10px; box-shadow: var(--shadow); }.primary-nav.is-open { display: flex; }.primary-nav a { padding: 11px 10px; }.primary-nav .nav-cta { margin-top: 6px; text-align: center; }.hero { width: calc(100% - 40px); display: flex; flex-direction: column; align-items: stretch; gap: 48px; min-height: auto; padding-top: 74px; padding-bottom: 78px; }.hero-copy { max-width: 600px; }.hero-visual { min-height: 420px; }.hero-image-wrap { inset: 0 0 31px 15px; border-radius: 2px 18px 2px 18px; }.signal-card { width: min(260px, 72%); }.hero-caption { right: 0; font-size: 8px; }.hero-notes { margin-top: 34px; gap: 10px 15px; }.trust-inner { min-height: 88px; flex-wrap: wrap; gap: 8px 13px; padding-top: 15px; padding-bottom: 15px; }.trust-line { width: 30px; }.trust-inner p { width: 100%; order: 3; }.trust-arrow { margin-left: auto; }
  .problem-grid, .product-grid, .teacher-grid, .student-grid, .architecture-heading, .package-grid, .agent-panel, .case-grid, .trust-grid, .contact-panel { display: flex; flex-direction: column; align-items: stretch; gap: 47px; }.problem-list { padding-top: 0; }.section-intro h2, .loop h2, .product-copy h2, .teacher-copy h2, .student-copy h2, .architecture-heading h2, .package-intro h2, .agent-copy h2, .case-copy h2, .trust-heading h2, .contact h2 { font-size: clamp(36px, 10vw, 50px); }
  .window-body { grid-template-columns: 84px 1fr; }.window-sidebar { padding: 17px 8px; font-size: 10px; }.window-sidebar span:not(.side-divider) { padding: 7px 6px; }.workspace-main { padding: 20px 15px 15px; }.workspace-heading h3 { font-size: 14px; }.tiny-button { display: none; }.workspace-summary { gap: 5px; }.workspace-summary > div { padding: 9px 7px; }.workspace-summary b { font-size: 12px; }.question-item strong { font-size: 10px; }.question-item p { font-size: 8px; }
  .teacher-visual { min-height: 355px; padding: 24px 5px 20px; }.teacher-board { padding: 16px 15px 14px; }.board-top { grid-template-columns: 1fr; gap: 3px; }.board-top b { font-size: 14px; }.board-date { text-align: left; }.board-row { grid-template-columns: 43px 1fr; padding: 9px 0; }.board-row i { grid-column: 2; justify-self: start; }.board-bottom { flex-direction: column; align-items: flex-start; gap: 7px; }.orbit-one { width: 290px; height: 290px; top: 24px; left: -5px; }.orbit-two { width: 370px; height: 370px; top: -15px; left: -40px; }
  .progress-map { padding-left: 8px; padding-right: 8px; }.map-line { left: 35px; right: 35px; }.student-panel-bottom { gap: 18px; }.sparkline { width: 140px; }
  .architecture-heading > p { margin-bottom: 0; }.architecture-map { display: flex; flex-direction: column; align-items: stretch; margin-top: 45px; }.arch-column { min-height: 0; }.arch-column small { margin-top: 17px; }.arch-column p { min-height: 0; }.arch-connector { flex-direction: row; justify-content: center; height: 40px; }.arch-connector i { width: 42px; height: 1px; }.architecture-foot { flex-direction: column; gap: 11px; }
  .package-tabs { overflow-x: auto; }.package-tab { flex: 0 0 auto; min-width: 106px; }.package-detail { min-height: 0; }.agent-panel { padding: 43px 24px; }.case-stamp { min-height: 280px; }.contact-panel { padding: 45px 0; border-bottom: 0; }
  .footer-inner { align-items: flex-start; flex-direction: column; gap: 17px; }.footer-links { flex-wrap: wrap; gap: 9px 17px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }.reveal { opacity: 1; transform: none; transition: none; }.button, .text-link span { transition: none; }
}