/* GUSEN MIND — one core, three minds, a glass room. */

body[data-page="ai"] { background: #050607; }

/* Shared orb primitives (scene.js) */
.mind-orb { position: absolute; inset: 0; }
.mind-model { position: absolute; inset: 0; min-height: 0; border: 0; z-index: 1; background: transparent; }
.mind-model::before { background: radial-gradient(65% 65% at 50% 48%, transparent 42%, rgba(3,6,5,.55) 100%); }
.mind-model::after { display: none; }
.mind-model .mv-canvas { z-index: 1; }
.mind-model .mv-controls { left: 50%; top: auto; bottom: 16px; transform: translateX(-50%); }
.mind-model .mv-caption, .mind-model .mv-live { display: none; }
.mind-stage { border-radius: 2px; }
.mind-glyph { opacity: .07; }
@media (max-width: 760px) { .mind-model { min-height: 0; } }
.mind-orb .orb-canvas { position: absolute; inset: 0; width: 100% !important; height: 100% !important; opacity: 0; transition: opacity 2s var(--ease); }
.mind-orb.orb-visible .orb-canvas { opacity: 1; }
.mind-orb.orb-fallback { display: grid; place-items: center; }
.mind-orb .orb-fallback__core { width: 50%; aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle at 35% 28%, #fff, #b9ffcf 5%, #194e38 32%, #020403 72%); box-shadow: inset -24px -20px 60px rgba(0,0,0,.8), 0 0 100px rgba(185,255,207,.14); }

.ai-eyebrow { display: inline-flex; align-items: center; gap: 9px; color: rgba(255,255,255,.36); font-family: var(--mono); font-size: 9px; letter-spacing: .18em; text-transform: uppercase; }
.ai-eyebrow i { width: 5px; height: 5px; border-radius: 50%; background: #b9ffcf; box-shadow: 0 0 12px rgba(185,255,207,.8); animation: pulse-dot 2.4s ease infinite; }

/* Hero ------------------------------------------------------------------ */
.ai-hero {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  padding-top: calc(var(--header-h) + clamp(54px, 7vh, 82px));
  background:
    radial-gradient(60% 70% at 78% 44%, rgba(92, 38, 91, .22), transparent 68%),
    radial-gradient(52% 60% at 18% 20%, rgba(25, 82, 63, .18), transparent 70%),
    #050607;
  isolation: isolate;
}
.ai-hero__grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 92px 92px;
  mask-image: radial-gradient(80% 76% at 52% 45%, #000, transparent 82%);
  -webkit-mask-image: radial-gradient(80% 76% at 52% 45%, #000, transparent 82%);
  pointer-events: none;
}
.ai-hero__glow { position: absolute; width: 50vw; height: 50vw; right: -10%; top: 14%; border-radius: 50%; background: radial-gradient(circle, rgba(194, 131, 255, .12), transparent 68%); filter: blur(50px); pointer-events: none; }
.ai-hero__inner { position: relative; z-index: 2; min-height: calc(100svh - var(--header-h)); display: grid; grid-template-columns: 1.02fr .98fr; gap: clamp(30px, 4vw, 70px); align-items: center; padding-bottom: 92px; }
.ai-hero__copy { max-width: 660px; }
.ai-hero h1 {
  margin-top: 24px;
  font-size: clamp(60px, 8.6vw, 132px);
  line-height: .88;
  letter-spacing: -.075em;
  font-weight: 600;
  color: #f5f5f7;
}
.ai-hero h1 span {
  background: linear-gradient(100deg, #ffffff 0%, #b9ffcf 28%, #9ce9ff 52%, #ffc4f0 78%, #ffffff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.ai-hero__sub { max-width: 540px; margin-top: 25px; color: rgba(255,255,255,.47); font-size: clamp(15px, 1.25vw, 18px); line-height: 1.75; }
.ai-hero__status { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 25px; color: rgba(255,255,255,.3); font-family: var(--mono); font-size: 8px; letter-spacing: .11em; text-transform: uppercase; }
.ai-hero__actions { margin-top: 32px; }
.ai-hero__foot {
  position: absolute;
  left: var(--gutter); right: var(--gutter); bottom: 24px;
  z-index: 3;
  display: flex; justify-content: space-between; gap: 20px;
  color: rgba(255,255,255,.24);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.ai-hero__foot a { color: rgba(185,255,207,.5); }
.ai-hero__foot a:hover { color: #b9ffcf; }

/* Hero triad ------------------------------------------------------------- */
.core-triad { position: relative; height: 500px; display: flex; align-items: center; justify-content: center; gap: clamp(2px, 1vw, 18px); perspective: 1000px; }
.core-triad__line { position: absolute; left: 4%; right: 4%; top: 49%; height: 1px; background: linear-gradient(90deg, transparent, rgba(255,255,255,.16), transparent); z-index: 0; }
.core-triad__caption { position: absolute; left: 0; bottom: -8px; color: rgba(255,255,255,.2); font-family: var(--mono); font-size: 7px; letter-spacing: .18em; }
.core-mini { position: relative; z-index: 1; flex: 1; min-width: 0; display: flex; flex-direction: column; align-items: center; gap: 11px; color: #f5f5f7; background: transparent; padding: 0; }
.core-mini:nth-child(1) { transform: translateY(14px) rotate(-3deg); }
.core-mini:nth-child(2) { transform: translateY(-32px); }
.core-mini:nth-child(3) { transform: translateY(24px) rotate(3deg); }
.core-mini__orb {
  position: relative;
  width: min(100%, 172px);
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 33% 27%, rgba(255,255,255,.95) 0 1%, var(--c1) 8%, transparent 28%),
    radial-gradient(circle at 50% 50%, var(--c2) 0%, #0c1310 47%, #020403 72%);
  box-shadow: inset -18px -16px 36px rgba(0,0,0,.8), inset 9px 8px 22px rgba(255,255,255,.16), 0 20px 60px rgba(0,0,0,.4), 0 0 50px var(--glow);
  transition: transform .7s var(--ease), box-shadow .7s var(--ease);
  overflow: hidden;
}
.core-mini__orb::before {
  content: '';
  position: absolute; inset: -28%;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.23);
  transform: rotate(-22deg) scaleY(.42);
}
.core-mini__orb::after {
  content: '';
  position: absolute; inset: -12%;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.1);
  transform: rotate(35deg) scaleY(.6);
}
.core-mini--g { --c1: #f4dfa0; --c2: #caa65c; --glow: rgba(244,223,160,.15); }
.core-mini--j { --c1: #ffb38f; --c2: #8d271e; --glow: rgba(255,106,61,.15); }
.core-mini--d { --c1: #ffd1ec; --c2: #a54d82; --glow: rgba(255,159,212,.15); }
.core-mini__glyph { position: absolute; top: 32%; left: 50%; transform: translate(-50%, -50%); font-family: var(--serif); font-size: 58px; line-height: 1; color: rgba(255,255,255,.72); text-shadow: 0 0 24px rgba(255,255,255,.25); pointer-events: none; }
.core-mini__name { color: #f5f5f7; font-size: 19px; letter-spacing: -.03em; line-height: 1; }
.core-mini em { font-style: normal; color: rgba(255,255,255,.28); font-family: var(--mono); font-size: 7px; letter-spacing: .13em; text-transform: uppercase; }
.core-mini b { position: absolute; top: 0; right: 4%; color: rgba(255,255,255,.18); font-family: var(--mono); font-size: 8px; font-weight: 400; letter-spacing: .1em; }
.core-mini:hover .core-mini__orb { transform: translateY(-8px) scale(1.025); box-shadow: inset -18px -16px 36px rgba(0,0,0,.8), inset 9px 8px 22px rgba(255,255,255,.2), 0 26px 70px rgba(0,0,0,.48), 0 0 70px var(--glow); }
.core-mini:focus-visible { outline: none; }
.core-mini:focus-visible .core-mini__orb { outline: 2px solid #b9ffcf; outline-offset: 7px; }

/* Personas --------------------------------------------------------------- */
.ai-personas { background: #030506; }
.mind-layout { --accent: #f4dfa0; --accent-2: #b9ffcf; display: grid; grid-template-columns: 1.08fr .92fr; gap: 18px; margin-top: 8px; }
.mind-layout[data-persona="jiang"] { --accent: #ff8c64; --accent-2: #ffcf9f; }
.mind-layout[data-persona="daji"] { --accent: #ff9fd4; --accent-2: #b9edff; }
.mind-stage {
  position: relative;
  min-height: 700px;
  border-radius: 30px;
  border: 1px solid rgba(255,255,255,.13);
  overflow: hidden;
  background:
    radial-gradient(60% 56% at 50% 44%, color-mix(in srgb, var(--accent) 8%, transparent), transparent 70%),
    linear-gradient(150deg, #09100d, #030707);
  transition: background 1s var(--ease);
}
.mind-stage__grid {
  position: absolute; inset: 0;
  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: 47px 47px;
  mask-image: radial-gradient(65% 65% at 50% 50%, #000, transparent 82%);
  -webkit-mask-image: radial-gradient(65% 65% at 50% 50%, #000, transparent 82%);
}
.mind-glyph { position: absolute; inset: 0; display: grid; place-items: center; z-index: 3; color: var(--accent); opacity: .13; font-family: var(--serif); font-size: clamp(220px, 28vw, 380px); line-height: .8; mix-blend-mode: screen; pointer-events: none; transition: color .8s ease, opacity .8s ease; }
.mind-stage__rings { position: absolute; left: 50%; top: 50%; width: 82%; aspect-ratio: 1; transform: translate(-50%, -50%); z-index: 2; pointer-events: none; }
.mind-stage__rings i { position: absolute; inset: 0; border-radius: 50%; border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent); transform: rotate(-22deg) scaleY(.32); animation: mind-ring 30s linear infinite; }
.mind-stage__rings i:nth-child(2) { transform: rotate(33deg) scaleY(.5); border-color: rgba(255,255,255,.09); animation-duration: 44s; animation-direction: reverse; }
.mind-stage__rings i:nth-child(3) { transform: rotate(78deg) scaleY(.72); border-color: rgba(255,255,255,.06); animation-duration: 55s; }
@keyframes mind-ring { to { rotate: 360deg; } }
.mind-stage__hud { position: absolute; z-index: 4; color: rgba(255,255,255,.25); font-family: var(--mono); font-size: 7px; letter-spacing: .13em; line-height: 1.6; text-transform: uppercase; pointer-events: none; }
.mind-stage__hud span { color: color-mix(in srgb, var(--accent) 74%, white); }
.mind-stage__hud--tl { left: 20px; top: 18px; }
.mind-stage__hud--tr { right: 20px; top: 18px; text-align: right; }
.mind-stage__hud--bl { left: 20px; bottom: 18px; }
.mind-stage__hud--br { right: 20px; bottom: 18px; text-align: right; }
.mind-panel { padding: clamp(22px, 3vw, 40px); display: flex; flex-direction: column; }
.persona-tabs { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid rgba(255,255,255,.12); border-bottom: 1px solid rgba(255,255,255,.12); }
.persona-tab { position: relative; display: flex; flex-direction: column; align-items: flex-start; gap: 6px; padding: 16px 10px 17px; color: rgba(255,255,255,.3); text-align: left; transition: color .3s, background .3s; }
.persona-tab + .persona-tab { border-left: 1px solid rgba(255,255,255,.1); }
.persona-tab:hover { color: rgba(255,255,255,.7); }
.persona-tab.is-active { color: #f5f5f7; background: rgba(255,255,255,.035); }
.persona-tab > span { color: rgba(255,255,255,.25); font-family: var(--mono); font-size: 7px; letter-spacing: .12em; }
.persona-tab b { font-size: 19px; font-weight: 500; letter-spacing: -.03em; }
.persona-tab em { font-style: normal; color: rgba(255,255,255,.24); font-family: var(--mono); font-size: 7px; letter-spacing: .12em; }
.persona-tab i { position: absolute; left: 10px; right: 10px; bottom: -1px; height: 1px; background: var(--accent); transform: scaleX(0); transition: transform .5s var(--ease); }
.persona-tab.is-active i { transform: scaleX(1); }
.persona-tab.is-active > span { color: var(--accent); }
.persona-info { padding-top: 26px; }
.persona-info__top { display: flex; justify-content: space-between; gap: 18px; align-items: start; }
.persona-info__kicker { color: var(--accent); font-family: var(--mono); font-size: 8px; letter-spacing: .14em; text-transform: uppercase; }
.persona-info h3 { margin-top: 9px; color: #f5f5f7; font-size: clamp(38px, 4vw, 56px); line-height: .95; letter-spacing: -.05em; font-weight: 600; }
.persona-info__en { margin-top: 6px; color: rgba(255,255,255,.28); font-family: var(--mono); font-size: 8px; letter-spacing: .14em; text-transform: uppercase; }
.persona-info__role { color: rgba(255,255,255,.42); font-size: 13px; margin-top: 12px; }
.persona-info__quote { margin-top: 22px; padding-left: 16px; border-left: 1px solid var(--accent); font-family: var(--serif); font-size: clamp(22px, 2.05vw, 29px); line-height: 1.15; letter-spacing: -.02em; color: rgba(255,255,255,.86); text-wrap: balance; }
.persona-info__desc { margin-top: 22px; color: rgba(255,255,255,.43); font-size: 12.5px; line-height: 1.8; }
.persona-meta { margin-top: 24px; border-top: 1px solid rgba(255,255,255,.1); }
.persona-meta > div { display: grid; grid-template-columns: 72px 1fr; gap: 14px; padding: 9px 0; border-bottom: 1px solid rgba(255,255,255,.075); }
.persona-meta dt { color: rgba(255,255,255,.24); font-family: var(--mono); font-size: 7px; letter-spacing: .11em; text-transform: uppercase; }
.persona-meta dd { margin: 0; color: rgba(255,255,255,.58); font-size: 10px; }
.persona-info__caps { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 18px; }
.persona-info__caps .tag { border-color: color-mix(in srgb, var(--accent) 24%, transparent); color: color-mix(in srgb, var(--accent) 70%, white); background: color-mix(in srgb, var(--accent) 6%, transparent); }
.persona-info__foot { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; margin-top: 24px; }
.persona-info__status { display: inline-flex; align-items: center; gap: 6px; color: color-mix(in srgb, var(--accent) 75%, white); font-family: var(--mono); font-size: 8px; letter-spacing: .1em; text-transform: uppercase; }
.persona-info__status i { width: 4px; height: 4px; border-radius: 50%; background: currentColor; box-shadow: 0 0 8px currentColor; }

/* Model matrix ----------------------------------------------------------- */
.ai-matrix { background: #f5f5f7; color: #1d1d1f; }
.ai-matrix .section-label { color: #86868b; }
.matrix-layout { display: grid; grid-template-columns: 1.1fr .9fr; gap: 18px; margin-top: 8px; }
.model-diagram { position: relative; min-height: 620px; border-radius: 30px; overflow: hidden; background: radial-gradient(60% 60% at 50% 50%, rgba(64, 155, 132, .22), transparent 72%), #07120f; border: 1px solid rgba(0,0,0,.1); }
.model-diagram::before { content: ''; position: absolute; inset: 0; background-image: linear-gradient(rgba(185,255,207,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(185,255,207,.04) 1px, transparent 1px); background-size: 42px 42px; mask-image: radial-gradient(70% 70% at 50% 50%, #000, transparent 82%); -webkit-mask-image: radial-gradient(70% 70% at 50% 50%, #000, transparent 82%); }
.model-diagram svg { position: absolute; inset: 6% 8%; width: 84%; height: 82%; overflow: visible; }
.model-diagram__top, .model-diagram__foot { position: absolute; left: 22px; right: 22px; display: flex; justify-content: space-between; gap: 15px; color: rgba(185,255,207,.34); font-family: var(--mono); font-size: 7px; letter-spacing: .14em; }
.model-diagram__top { top: 18px; }
.model-diagram__foot { bottom: 17px; color: rgba(255,255,255,.22); }
.model-lines { animation: model-dash 20s linear infinite; stroke-opacity: .42; }
.model-diagram svg circle { filter: drop-shadow(0 0 6px rgba(185,255,207,.18)); }
@keyframes model-dash { to { stroke-dashoffset: -120; } }
.model-rings { transform-origin: 310px 310px; animation: spin 45s linear infinite; }
.model-list { border-radius: 30px; border: 1px solid rgba(0,0,0,.1); background: #fff; padding: clamp(22px, 2.6vw, 32px); display: flex; flex-direction: column; justify-content: center; }
.model-list__head { display: grid; grid-template-columns: 1fr 48px 54px; gap: 10px; padding-bottom: 12px; border-bottom: 1px solid rgba(0,0,0,.13); color: #a1a1a6; font-family: var(--mono); font-size: 7px; letter-spacing: .12em; text-transform: uppercase; }
.model-row { display: grid; grid-template-columns: 1fr 48px 54px; gap: 10px; align-items: center; padding: 12px 0; border-bottom: 1px solid rgba(0,0,0,.07); color: #3a3a3c; font-size: 11px; }
.model-row b { color: #1d1d1f; font-family: var(--mono); font-size: 12px; font-weight: 500; }
.model-row em { color: #0b7a4d; font-family: var(--mono); font-size: 7px; font-style: normal; letter-spacing: .08em; text-align: right; }
.model-row:nth-child(7) em, .model-row:nth-child(8) em { color: #a1a1a6; }
.model-list__note { margin-top: 18px; color: #a1a1a6; font-size: 9px; line-height: 1.65; }
.mind-principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: clamp(50px, 6vw, 78px); }
.mind-principle { padding-top: 17px; border-top: 1px solid rgba(0,0,0,.14); }
.mind-principle .mono { color: #a1a1a6; }
.mind-principle h3 { margin-top: 19px; font-size: 19px; letter-spacing: -.03em; font-weight: 500; }
.mind-principle p { margin-top: 9px; color: #86868b; font-size: 11px; line-height: 1.65; }

/* Roadmap ---------------------------------------------------------------- */
.ai-roadmap { background: #030506; }
.roadmap { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 46px; padding-top: 12px; }
.roadmap__line { position: absolute; left: 0; right: 0; top: 18px; height: 1px; background: rgba(255,255,255,.12); }
.roadmap__line i { display: block; width: 66%; height: 100%; background: linear-gradient(90deg, #b9ffcf, rgba(112,231,255,.2)); }
.roadmap-step { position: relative; padding-top: 28px; opacity: .42; }
.roadmap-step.is-done, .roadmap-step.is-live { opacity: 1; }
.roadmap-step::before { content: ''; position: absolute; top: -8px; left: 0; width: 8px; height: 8px; border-radius: 50%; border: 1px solid rgba(255,255,255,.35); background: #030506; }
.roadmap-step.is-done::before { background: #9fdcb4; border-color: #9fdcb4; }
.roadmap-step.is-live::before { background: #b9ffcf; border-color: #b9ffcf; box-shadow: 0 0 14px rgba(185,255,207,.7); }
.roadmap-step > span { color: rgba(255,255,255,.4); font-family: var(--mono); font-size: 9px; letter-spacing: .12em; }
.roadmap-step h3 { margin-top: 12px; color: #f5f5f7; font-size: 21px; letter-spacing: -.03em; font-weight: 500; }
.roadmap-step p { margin-top: 9px; color: rgba(255,255,255,.3); font-size: 11px; line-height: 1.65; max-width: 25ch; }
.roadmap-step em { display: block; margin-top: 16px; color: rgba(185,255,207,.5); font-family: var(--mono); font-size: 7px; font-style: normal; letter-spacing: .1em; }
.ai-status-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: clamp(44px, 6vw, 72px); }
.ai-status { border: 1px solid rgba(255,255,255,.1); border-radius: 18px; padding: 20px; background: rgba(255,255,255,.025); }
.ai-status .mono { color: rgba(255,255,255,.23); font-size: 7px; }
.ai-status h3 { margin-top: 16px; color: #f5f5f7; font-size: 23px; letter-spacing: -.04em; font-weight: 500; }
.ai-status p { margin-top: 9px; color: rgba(255,255,255,.32); font-size: 10.5px; line-height: 1.6; }
.ai-status .pill { margin-top: 17px; font-size: 7px; }

/* Ethics ----------------------------------------------------------------- */
.ai-ethics { background: #f5f5f7; color: #1d1d1f; }
.ai-ethics .section-label { color: #86868b; }
.ai-ethics .h2 { max-width: 12ch; }
.ai-ethics__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 40px; }
.ai-ethic { border-top: 1px solid rgba(0,0,0,.14); padding-top: 17px; }
.ai-ethic > span { color: #a1a1a6; font-family: var(--mono); font-size: 9px; letter-spacing: .12em; }
.ai-ethic h3 { margin-top: 21px; font-size: 18px; letter-spacing: -.03em; font-weight: 500; }
.ai-ethic p { margin-top: 9px; color: #74747a; font-size: 12px; line-height: 1.7; }
.ai-fineprint { margin-top: 36px; color: #a1a1a6; font-size: 9px; line-height: 1.7; max-width: 88ch; }

/* Closing ---------------------------------------------------------------- */
.ai-close { position: relative; overflow: hidden; background: #030506; text-align: center; min-height: 78vh; display: flex; align-items: center; }
.ai-close .container { position: relative; z-index: 2; }
.ai-close__core { position: absolute; left: 50%; top: 50%; width: 620px; height: 620px; transform: translate(-50%, -50%); pointer-events: none; opacity: .6; }
.ai-close__core i { position: absolute; inset: 0; border-radius: 50%; border: 1px solid rgba(185,255,207,.1); transform: rotate(-22deg) scaleY(.3); }
.ai-close__core i:nth-child(2) { transform: rotate(33deg) scaleY(.5); border-color: rgba(255,159,212,.08); }
.ai-close__core i:nth-child(3) { transform: rotate(76deg) scaleY(.72); border-color: rgba(112,231,255,.08); }
.ai-close h2 { margin-top: 24px; font-size: clamp(48px, 8vw, 124px); line-height: .92; letter-spacing: -.07em; font-weight: 600; color: #f5f5f7; }
.ai-close h2 span { background: linear-gradient(100deg, #b9ffcf, #9ce9ff 44%, #ffc4f0 74%, #ffffff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.ai-close .btn-group { justify-content: center; margin-top: 34px; }
.ai-close__note { margin-top: 28px; color: rgba(255,255,255,.24); font-family: var(--mono); font-size: 8px; letter-spacing: .13em; text-transform: uppercase; }

/* Responsive ------------------------------------------------------------- */
@media (max-width: 1180px) {
  .ai-hero__inner { grid-template-columns: 1fr; gap: 20px; padding-bottom: 120px; }
  .ai-hero__copy { max-width: 720px; }
  .core-triad { height: 330px; width: min(100%, 620px); margin-inline: auto; }
  .core-mini__orb { width: min(100%, 138px); }
  .core-mini__glyph { font-size: 46px; }
  .mind-layout { grid-template-columns: 1fr; }
  .mind-stage { min-height: 600px; }
  .mind-panel { padding: 22px 0 0; }
  .matrix-layout { grid-template-columns: 1fr; }
  .model-diagram { min-height: 560px; }
  .ai-ethics__grid { grid-template-columns: 1fr 1fr; gap: 28px 18px; }
}
@media (max-width: 720px) {
  .ai-hero { padding-top: calc(var(--header-h) + 50px); }
  .ai-hero h1 { font-size: clamp(52px, 14.5vw, 78px); }
  .ai-hero__sub { font-size: 14px; }
  .ai-hero__foot { position: relative; left: auto; right: auto; bottom: auto; padding: 0 var(--gutter) 18px; }
  .ai-hero__foot span:nth-child(2) { display: none; }
  .core-triad { height: 260px; gap: 0; }
  .core-mini__orb { width: 98px; }
  .core-mini__glyph { font-size: 34px; }
  .core-mini__name { font-size: 15px; }
  .core-mini em { font-size: 6px; letter-spacing: .06em; }
  .core-mini b { display: none; }
  .core-mini:nth-child(1) { transform: translateY(8px) rotate(-5deg); }
  .core-mini:nth-child(2) { transform: translateY(-20px); }
  .core-mini:nth-child(3) { transform: translateY(14px) rotate(5deg); }
  .mind-stage { min-height: 430px; border-radius: 24px; }
  .mind-glyph { font-size: 210px; }
  .mind-stage__hud { font-size: 6px; }
  .mind-stage__hud--bl, .mind-stage__hud--br { bottom: 12px; }
  .persona-tab { padding: 12px 7px 13px; }
  .persona-tab b { font-size: 17px; }
  .persona-tab em { font-size: 6px; }
  .persona-info h3 { font-size: 42px; }
  .persona-info__quote { font-size: 24px; }
  .persona-tabs { position: sticky; top: 54px; z-index: 3; background: #030506; }
  .mind-panel { padding-top: 16px; }
  .ai-matrix .h2 { font-size: clamp(30px, 8.4vw, 38px); }
  .model-diagram { min-height: 380px; border-radius: 24px; }
  .model-diagram svg { inset: 10% 1%; width: 98%; height: 78%; }
  .model-diagram__foot { display: none; }
  .model-list { padding: 20px; border-radius: 24px; }
  .model-row { font-size: 10px; }
  .mind-principles { grid-template-columns: 1fr; gap: 22px; }
  .roadmap { grid-template-columns: 1fr 1fr; gap: 28px 16px; padding-top: 0; }
  .roadmap__line { display: none; }
  .roadmap-step { padding-top: 18px; }
  .roadmap-step::before { top: -1px; }
  .ai-status-grid { grid-template-columns: 1fr; }
  .ai-ethics__grid { grid-template-columns: 1fr; gap: 24px; }
  .ai-close { min-height: auto; }
  .ai-close h2 { font-size: clamp(46px, 13.5vw, 72px); }
  .ai-close__core { width: 380px; height: 380px; }
}