/* ============================================================
   WDA — About page styles
   Built on the WDA UI Kit (tokens.css · kit.css · motion.css · wda.css).
   Only About-page composition lives here; all values read tokens and
   reuse the homepage visual language.
   ============================================================ */

/* active nav state (was undefined on landing — only hover existed) */
.site-nav a.is-active { color: var(--color-text-brand); background: var(--color-brand-tint); }

/* ============================================================
   ABOUT HERO
   ============================================================ */
.ahero { position: relative; padding: 150px var(--page-margin-tablet) clamp(72px, 9vw, 120px); overflow: hidden; background: var(--color-bg-page); }
.ahero__bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.ahero__bg::before, .ahero__bg::after { content: ""; position: absolute; border-radius: 50%; filter: blur(80px); }
.ahero__bg::before { width: 640px; height: 640px; top: -240px; right: -140px; background: radial-gradient(circle, rgba(var(--color-brand-primary-rgb),.20), transparent 68%); }
.ahero__bg::after { width: 520px; height: 520px; bottom: -300px; left: -180px; background: radial-gradient(circle, rgba(var(--color-brand-secondary-rgb),.10), transparent 70%); }
.ahero__grid-lines { position: absolute; inset: 0; z-index: 0; background-image: linear-gradient(var(--color-border-default) 1px, transparent 1px), linear-gradient(90deg, var(--color-border-default) 1px, transparent 1px); background-size: 56px 56px; -webkit-mask-image: radial-gradient(ellipse 78% 72% at 62% 32%, #000 0%, transparent 76%); mask-image: radial-gradient(ellipse 78% 72% at 62% 32%, #000 0%, transparent 76%); opacity: .45; }
/* soft transition fade into the credibility strip below */
.ahero::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 160px; background: linear-gradient(180deg, transparent, var(--color-bg-surface)); z-index: 1; pointer-events: none; }

.ahero__inner { position: relative; z-index: 2; max-width: 1240px; margin: 0 auto; display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(0, 1fr); gap: 56px; align-items: center; }

.ahero__badge { display: inline-flex; align-items: center; gap: 9px; height: 34px; padding: 0 15px; border-radius: var(--radius-pill); background: var(--color-brand-tint); color: var(--color-text-brand); font-size: 13px; font-weight: var(--fw-bold); letter-spacing: .02em; border: 1px solid var(--color-brand-tint-strong); }
.ahero__badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--brand-gradient); box-shadow: 0 0 0 4px rgba(var(--color-brand-primary-rgb),.18); }

.ahero h1 { font-family: var(--font-display); font-weight: 800; font-size: clamp(32px, 4.4vw, 52px); line-height: 1.07; letter-spacing: -.025em; margin: 22px 0 0; color: var(--color-text-primary); }
.ahero h1 .accent { background: var(--gradient-accent-text); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; }
.ahero__lead { font-size: clamp(16px, 1.55vw, 19px); line-height: 1.6; color: var(--color-text-secondary); max-width: 540px; margin: 22px 0 0; }
.ahero__lead b { color: var(--color-text-primary); font-weight: var(--fw-semibold); }
.ahero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.ahero__note { display: flex; align-items: flex-start; gap: 10px; margin-top: 22px; font-size: 14px; color: var(--color-text-muted); max-width: 460px; }
.ahero__note svg { width: 18px; height: 18px; color: var(--color-text-brand); flex: none; margin-top: 1px; }

/* ---- hero "business OS" radial diagram ---- */
.osdiag { position: relative; z-index: 2; aspect-ratio: 1 / 1; width: 100%; max-width: 480px; margin: 0 auto; }
.osdiag__svg { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 1; overflow: visible; }
.osdiag__svg .link { fill: none; stroke: var(--color-border-strong); stroke-width: 1.5; }
.osdiag__svg .flow { fill: none; stroke: var(--color-brand-secondary); stroke-width: 2; stroke-linecap: round; stroke-dasharray: 5 150; opacity: .85; }
.osdiag.is-in .osdiag__svg .flow { animation: osFlow 3.2s var(--motion-easing-soft) infinite; }
.osdiag__svg .flow:nth-of-type(2) { animation-delay: .4s; }
.osdiag__svg .flow:nth-of-type(3) { animation-delay: .8s; }
.osdiag__svg .flow:nth-of-type(4) { animation-delay: 1.2s; }
.osdiag__svg .flow:nth-of-type(5) { animation-delay: 1.6s; }
.osdiag__svg .flow:nth-of-type(6) { animation-delay: 2s; }
.osdiag__svg .flow:nth-of-type(7) { animation-delay: 2.4s; }
.osdiag__svg .flow:nth-of-type(8) { animation-delay: 2.8s; }
@keyframes osFlow { to { stroke-dashoffset: -155; } }

.osdiag__hub { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); z-index: 3; width: 38%; aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle at 30% 30%, var(--color-ink-glow), transparent 55%), linear-gradient(180deg, var(--color-ink-surface) 0%, var(--color-ink) 100%); border: 1px solid var(--color-ink-border); color: #fff; display: grid; place-items: center; text-align: center; padding: 6%; box-shadow: var(--shadow-lg), 0 0 0 1px rgba(255,255,255,.03) inset; }
.osdiag__hub::before, .osdiag__hub::after { content: ""; position: absolute; inset: 0; border-radius: 50%; border: 1.5px solid rgba(var(--color-brand-primary-rgb),.4); }
.osdiag.is-in .osdiag__hub::before, .osdiag.is-in .osdiag__hub::after { animation: hubRing 3.2s var(--motion-easing-soft) infinite; }
.osdiag__hub::after { animation-delay: 1.6s; }
.osdiag__hub b { font-family: var(--font-display); font-weight: 700; font-size: clamp(12px, 1.5vw, 16px); line-height: 1.2; letter-spacing: -.01em; }
.osdiag__hub small { display: block; margin-top: 5px; font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: var(--color-text-brand-on-dark); font-weight: var(--fw-bold); }

.osnode { position: absolute; z-index: 2; transform: translate(-50%, -50%); display: inline-flex; align-items: center; gap: 8px; height: 38px; padding: 0 14px 0 10px; border-radius: var(--radius-pill); background: var(--color-bg-page); border: 1px solid var(--color-border-default); box-shadow: var(--shadow-md); font-size: 12.5px; font-weight: var(--fw-bold); color: var(--color-text-primary); white-space: nowrap; }
.osnode .ic { width: 24px; height: 24px; border-radius: 7px; background: var(--color-brand-tint); color: var(--color-text-brand); display: grid; place-items: center; flex: none; }
/* Dual-tone: every other satellite node uses the cyan/blue logo accent. */
.osnode--2 .ic, .osnode--4 .ic, .osnode--6 .ic, .osnode--8 .ic { background: var(--color-brand-secondary-tint); color: var(--color-text-brand-secondary); }
.osnode .ic svg { width: 14px; height: 14px; }
/* 8 modules placed around the hub */
.osnode--1 { top: 6%;  left: 50%; }
.osnode--2 { top: 19%; left: 90%; }
.osnode--3 { top: 50%; left: 99%; }
.osnode--4 { top: 81%; left: 90%; }
.osnode--5 { top: 94%; left: 50%; }
.osnode--6 { top: 81%; left: 10%; }
.osnode--7 { top: 50%; left: 1%; }
.osnode--8 { top: 19%; left: 10%; }
@media (prefers-reduced-motion: reduce) {
  .osdiag__svg .flow { animation: none !important; opacity: .5; }
  .osdiag__hub::before, .osdiag__hub::after { animation: none !important; }
}

/* ============================================================
   CREDIBILITY STRIP  (reuses .trust visual language)
   ============================================================ */
.creds { position: relative; z-index: 4; max-width: 1160px; margin: -52px auto 0; padding: 0 var(--page-margin-tablet); }
.creds__inner { background: rgba(255,255,255,.72); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border: 1px solid var(--color-border-default); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); display: flex; align-items: stretch; }
.creds__item { flex: 1; display: flex; align-items: flex-start; gap: 14px; padding: 24px 26px; border-left: 1px solid var(--color-border-default); }
.creds__item:first-child { border-left: 0; }
.creds__item > span:last-child { display: flex; flex-direction: column; min-width: 0; }
.creds__ic { width: 40px; height: 40px; border-radius: 11px; background: var(--color-brand-tint); color: var(--color-text-brand); display: grid; place-items: center; flex: none; }
.creds__ic svg { width: 21px; height: 21px; }
.creds__k { display: block; font-family: var(--font-display); font-weight: 700; font-size: 18px; letter-spacing: -.01em; color: var(--color-text-primary); line-height: 1.1; }
.creds__v { display: block; font-size: 12.5px; color: var(--color-text-muted); line-height: 1.4; margin-top: 5px; overflow-wrap: anywhere; }

/* ============================================================
   CORE PHILOSOPHY  (split layout)
   ============================================================ */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; margin-top: 8px; }
.split__copy h2 { font-family: var(--font-display); font-weight: 700; font-size: clamp(26px, 3.4vw, 38px); line-height: 1.12; letter-spacing: -.02em; margin: 14px 0 0; }
.split__text { font-size: var(--fs-lead); line-height: var(--lh-lead); color: var(--color-text-secondary); margin: 20px 0 0; }
.split__hl { display: flex; gap: 14px; align-items: flex-start; margin-top: 26px; padding: 20px 22px; border-radius: var(--radius-lg); background: var(--color-brand-tint); border: 1px solid var(--color-brand-tint-strong); }
.split__hl svg { width: 22px; height: 22px; color: var(--color-text-brand); flex: none; margin-top: 2px; }
.split__hl b { font-family: var(--font-display); font-weight: 600; font-size: 17px; line-height: 1.4; color: var(--color-text-primary); letter-spacing: -.01em; }

/* transformation diagram */
.xform { background: var(--color-bg-page); border: 1px solid var(--color-border-default); border-radius: var(--radius-xl); padding: 26px; box-shadow: var(--shadow-md); }
.xform__col { display: flex; flex-direction: column; gap: 10px; }
.xform__cap { display: inline-flex; align-items: center; gap: 8px; font-size: 11px; font-weight: var(--fw-bold); letter-spacing: .08em; text-transform: uppercase; margin-bottom: 4px; }
.xform__cap--before { color: var(--color-text-muted); }
.xform__cap--after { color: var(--color-text-brand); }
.xform__item { display: flex; align-items: center; gap: 11px; padding: 13px 15px; border-radius: var(--radius-md); font-size: 14px; font-weight: var(--fw-medium); }
.xform__item .dt { width: 8px; height: 8px; border-radius: 50%; flex: none; }
.xform__col--before .xform__item { background: var(--color-bg-surface); color: var(--color-text-secondary); border: 1px solid var(--color-border-default); }
.xform__col--before .dt { background: var(--color-text-muted); opacity: .5; }
.xform__col--after .xform__item { background: linear-gradient(180deg, var(--color-brand-tint), var(--color-bg-page)); color: var(--color-text-primary); border: 1px solid var(--color-brand-tint-strong); font-weight: var(--fw-semibold); }
.xform__col--after .dt { background: var(--color-brand-primary); }
.xform__mid { display: flex; align-items: center; gap: 14px; margin: 16px 0; }
.xform__line { flex: 1; height: 1px; background: var(--color-border-default); position: relative; overflow: hidden; }
.xform__line::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, transparent, var(--color-brand-primary), transparent); transform: translateX(-100%); }
.xform.is-in .xform__line::after { animation: xformSweep 2.4s var(--motion-easing-soft) infinite; }
@keyframes xformSweep { to { transform: translateX(100%); } }
.xform__pivot { display: inline-flex; align-items: center; gap: 9px; height: 40px; padding: 0 18px; border-radius: var(--radius-pill); background: var(--color-ink); color: #fff; font-size: 13px; font-weight: var(--fw-bold); white-space: nowrap; }
.xform__pivot svg { width: 17px; height: 17px; color: var(--color-brand-primary); }
@media (prefers-reduced-motion: reduce) { .xform__line::after { animation: none !important; } }

/* ============================================================
   EXPERTISE MAP  (radial network)
   ============================================================ */
.emap { position: relative; margin: 56px auto 0; max-width: 760px; aspect-ratio: 1 / 1; }
.emap__svg { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 1; overflow: visible; }
.emap__svg .link { fill: none; stroke: var(--color-border-strong); stroke-width: 1.25; }
.emap__svg .glow { fill: none; stroke: var(--color-brand-primary); stroke-width: 1.75; stroke-linecap: round; stroke-dasharray: 4 120; opacity: 0; }
.emap.is-in .emap__svg .glow { opacity: .8; animation: osFlow 4s linear infinite; }
.emap__core { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); z-index: 3; width: 30%; aspect-ratio: 1; border-radius: 50%; background: var(--color-ink); color: #fff; display: grid; place-items: center; text-align: center; padding: 5%; box-shadow: var(--shadow-lg); }
.emap__core b { font-family: var(--font-display); font-weight: 700; font-size: clamp(15px, 2vw, 22px); }
.emap__core small { display: block; margin-top: 6px; font-size: 10.5px; color: var(--color-brand-primary); font-weight: var(--fw-bold); letter-spacing: .04em; line-height: 1.3; }
.enode { position: absolute; z-index: 2; transform: translate(-50%, -50%); display: inline-flex; align-items: center; gap: 8px; height: 36px; padding: 0 14px; border-radius: var(--radius-pill); background: var(--color-bg-page); border: 1px solid var(--color-border-default); box-shadow: var(--shadow-sm); font-size: 13px; font-weight: var(--fw-semibold); color: var(--color-text-primary); white-space: nowrap; transition: transform var(--motion-duration-standard) var(--motion-easing-standard), border-color var(--motion-duration-standard), box-shadow var(--motion-duration-standard); }
.enode .dt { width: 7px; height: 7px; border-radius: 50%; background: var(--color-brand-primary); flex: none; }
.enode:hover { transform: translate(-50%, -50%) scale(1.05); border-color: var(--color-brand-tint-strong); box-shadow: var(--shadow-md); }
.emap__note { max-width: 620px; margin: 36px auto 0; text-align: center; font-size: 15px; color: var(--color-text-secondary); line-height: 1.6; }
.emap__note b { color: var(--color-text-primary); font-weight: var(--fw-semibold); }
@media (prefers-reduced-motion: reduce) { .emap__svg .glow { animation: none !important; opacity: .45; } }

/* mobile fallback grid for the map */
.emap-grid { display: none; }

/* ============================================================
   FEATURED PROJECTS
   ============================================================ */
.proj-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; margin-top: 48px; }
.proj-card { display: flex; flex-direction: column; background: var(--color-bg-page); border: 1px solid var(--color-border-default); border-radius: var(--radius-xl); overflow: hidden; transition: transform var(--motion-duration-standard) var(--motion-easing-standard), box-shadow var(--motion-duration-standard), border-color var(--motion-duration-standard); }
.proj-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: transparent; }

/* mini visual fragment header */
.proj-viz { position: relative; height: 168px; overflow: hidden; background: var(--color-bg-surface); border-bottom: 1px solid var(--color-border-default); }
.proj-viz__grid { position: absolute; inset: 0; background-image: linear-gradient(var(--color-border-default) 1px, transparent 1px), linear-gradient(90deg, var(--color-border-default) 1px, transparent 1px); background-size: 32px 32px; opacity: .5; -webkit-mask-image: radial-gradient(ellipse 90% 90% at 70% 30%, #000, transparent 80%); mask-image: radial-gradient(ellipse 90% 90% at 70% 30%, #000, transparent 80%); }
.proj-viz__glow { position: absolute; width: 180px; height: 180px; top: -70px; right: -50px; border-radius: 50%; background: radial-gradient(circle, rgba(var(--color-brand-primary-rgb),.16), transparent 70%); }
.proj-viz__cat { position: absolute; top: 16px; left: 16px; z-index: 3; display: inline-flex; align-items: center; gap: 7px; height: 28px; padding: 0 12px; border-radius: var(--radius-pill); background: var(--color-ink); color: #fff; font-size: 11px; font-weight: var(--fw-bold); letter-spacing: .06em; text-transform: uppercase; }
.proj-viz__cat .ci { width: 14px; height: 14px; color: var(--color-brand-primary); }
.proj-viz__art { position: absolute; inset: 0; z-index: 2; }

/* tiny widget primitives used inside the fragments */
.vchip { position: absolute; display: inline-flex; align-items: center; gap: 6px; height: 26px; padding: 0 10px; border-radius: var(--radius-pill); background: var(--color-bg-page); border: 1px solid var(--color-border-default); box-shadow: var(--shadow-sm); font-size: 10.5px; font-weight: var(--fw-bold); color: var(--color-text-primary); white-space: nowrap; }
.vchip .dt { width: 6px; height: 6px; border-radius: 50%; background: var(--color-brand-primary); flex: none; }
.vchip svg { width: 13px; height: 13px; color: var(--color-text-brand); }
.vcard { position: absolute; background: var(--color-bg-page); border: 1px solid var(--color-border-default); border-radius: var(--radius-md); box-shadow: var(--shadow-md); padding: 10px 12px; }
.vcard__h { font-size: 10px; font-weight: var(--fw-bold); letter-spacing: .05em; text-transform: uppercase; color: var(--color-text-muted); }
.vstage { display: flex; gap: 4px; margin-top: 7px; }
.vstage i { height: 5px; width: 16px; border-radius: 3px; background: var(--color-border-strong); }
.vstage i.on { background: var(--color-brand-primary); }
.vbars { display: flex; align-items: flex-end; gap: 4px; height: 34px; }
.vbars i { width: 7px; border-radius: 3px 3px 0 0; background: var(--color-brand-tint-strong); }
.vbars i:last-child { background: var(--color-brand-primary); }
.vdots { position: absolute; width: 9px; height: 9px; border-radius: 50%; border: 2px solid var(--color-brand-primary); background: var(--color-bg-page); }
.vline { position: absolute; height: 2px; background: var(--color-border-strong); }
.vline--dash { background: none; border-top: 2px dashed var(--color-brand-primary); opacity: .7; }

.proj-card__body { padding: 24px 26px 26px; display: flex; flex-direction: column; flex: 1; }
.proj-card__body h3 { font-size: var(--fs-h5); font-weight: var(--fw-bold); margin: 0 0 10px; line-height: 1.25; }
.proj-card__body p { margin: 0; font-size: 14px; color: var(--color-text-secondary); line-height: 1.6; }
.proj-tags { display: flex; align-items: center; gap: 8px; margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--color-border-default); flex-wrap: wrap; }
.proj-tags__lbl { font-size: 11px; font-weight: var(--fw-bold); letter-spacing: .06em; text-transform: uppercase; color: var(--color-text-muted); }
.proj-tags__v { font-size: 13px; font-weight: var(--fw-semibold); color: var(--color-text-secondary); }
.proj-note { max-width: 720px; margin: 28px auto 0; text-align: center; font-size: 14px; color: var(--color-text-muted); line-height: 1.6; }

/* ============================================================
   ADDITIONAL EXPERIENCE
   ============================================================ */
.addexp { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin-top: 44px; }
.addexp__item { background: var(--color-bg-page); border: 1px solid var(--color-border-default); border-radius: var(--radius-lg); padding: 22px; transition: transform var(--motion-duration-standard) var(--motion-easing-standard), border-color var(--motion-duration-standard); }
.addexp__item:hover { transform: translateY(-4px); border-color: var(--color-brand-tint-strong); }
.addexp__ic { width: 40px; height: 40px; border-radius: var(--radius-md); background: var(--color-brand-tint); color: var(--color-text-brand); display: grid; place-items: center; margin-bottom: 14px; }
.addexp__ic svg { width: 20px; height: 20px; }
.addexp__item h4 { font-size: 15px; font-weight: var(--fw-bold); margin: 0 0 7px; }
.addexp__item p { font-size: 13px; color: var(--color-text-secondary); margin: 0; line-height: 1.5; }

/* ============================================================
   EXPERIENCE SUMMARY TRANSITION  (ink band statement)
   ============================================================ */
.statement { position: relative; overflow: hidden; }
.statement__glow { position: absolute; pointer-events: none; width: 420px; height: 420px; top: 50%; left: 50%; transform: translate(-50%, -50%); background: radial-gradient(circle, rgba(var(--color-brand-primary-rgb),.16), transparent 70%); filter: blur(30px); }
.statement__line { width: 0; height: 2px; margin: 0 auto 32px; background: var(--color-brand-primary); }
.statement.is-in .statement__line { width: 90px; transition: width 1s var(--motion-easing-soft) .2s; }
.statement p { position: relative; z-index: 2; max-width: 880px; margin: 0 auto; text-align: center; font-family: var(--font-display); font-weight: 600; font-size: clamp(22px, 3.2vw, 34px); line-height: 1.32; letter-spacing: -.015em; color: #fff; }
.statement p b { color: var(--color-brand-primary); font-weight: 600; }

/* ============================================================
   METHODOLOGY  (horizontal progression — reuse journey logic)
   ============================================================ */
.method { margin-top: 56px; }
.method__track { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; position: relative; }
.method__track::before { content: ""; position: absolute; top: 27px; left: 10%; right: 10%; height: 2px; background: var(--color-border-default); z-index: 0; }
.method__fill { position: absolute; top: 27px; left: 10%; height: 2px; background: var(--color-brand-primary); z-index: 1; width: 0; transition: width 1.5s var(--motion-easing-soft) .2s; }
.method.is-in .method__fill { width: 80%; }
.method__step { position: relative; z-index: 2; }
.method__n { width: 56px; height: 56px; margin: 0 0 18px; border-radius: 50%; background: var(--color-bg-page); border: 2px solid var(--color-border-strong); color: var(--color-text-primary); display: grid; place-items: center; font-family: var(--font-display); font-weight: 700; font-size: 17px; transition: all var(--motion-duration-standard) var(--motion-easing-standard); }
.method.is-in .method__step:nth-child(1) .method__n { background: var(--color-brand-primary); border-color: var(--color-brand-primary); color: var(--color-text-on-brand); transition-delay: .3s; }
.method.is-in .method__step:nth-child(2) .method__n { background: var(--color-brand-primary); border-color: var(--color-brand-primary); color: var(--color-text-on-brand); transition-delay: .55s; }
.method.is-in .method__step:nth-child(3) .method__n { background: var(--color-brand-primary); border-color: var(--color-brand-primary); color: var(--color-text-on-brand); transition-delay: .8s; }
.method.is-in .method__step:nth-child(4) .method__n { background: var(--color-brand-primary); border-color: var(--color-brand-primary); color: var(--color-text-on-brand); transition-delay: 1.05s; }
.method.is-in .method__step:nth-child(5) .method__n { background: var(--color-brand-primary); border-color: var(--color-brand-primary); color: var(--color-text-on-brand); transition-delay: 1.3s; }
.method__step h4 { font-size: 15.5px; font-weight: var(--fw-bold); margin: 0 0 7px; }
.method__step p { font-size: 13.5px; color: var(--color-text-secondary); margin: 0; line-height: 1.55; }

/* ============================================================
   WHY WDA  (4 cards)
   ============================================================ */
.why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 48px; }
.why-card { display: flex; gap: 18px; background: var(--color-bg-page); border: 1px solid var(--color-border-default); border-radius: var(--radius-lg); padding: 28px; transition: transform var(--motion-duration-standard) var(--motion-easing-standard), box-shadow var(--motion-duration-standard), border-color var(--motion-duration-standard); }
.why-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.why-card__ic { width: 50px; height: 50px; border-radius: var(--radius-md); background: var(--color-ink); color: #fff; display: grid; place-items: center; flex: none; }
.why-card__ic svg { width: 25px; height: 25px; }
.why-card h3 { font-size: 18px; font-weight: var(--fw-bold); margin: 0 0 8px; line-height: 1.3; }
.why-card p { font-size: 14px; color: var(--color-text-secondary); margin: 0; line-height: 1.6; }

/* ============================================================
   TEAM MINDSET  (split: copy + abstract system visual)
   ============================================================ */
.team__principles { display: flex; flex-direction: column; gap: 14px; margin-top: 26px; }
.team__p { display: flex; gap: 14px; align-items: flex-start; }
.team__p .ic { width: 34px; height: 34px; border-radius: 10px; background: var(--color-brand-tint); color: var(--color-text-brand); display: grid; place-items: center; flex: none; }
.team__p .ic svg { width: 18px; height: 18px; }
.team__p b { font-size: 15px; font-weight: var(--fw-bold); display: block; }
.team__p span { font-size: 13.5px; color: var(--color-text-secondary); line-height: 1.5; }

/* abstract layered-system visual */
.tviz { position: relative; aspect-ratio: 5 / 4; border-radius: var(--radius-xl); background: var(--color-ink); overflow: hidden; box-shadow: var(--shadow-lg); }
.tviz__glow { position: absolute; width: 280px; height: 280px; top: -90px; right: -70px; border-radius: 50%; background: radial-gradient(circle, rgba(var(--color-brand-primary-rgb),.28), transparent 70%); }
.tviz__grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px); background-size: 40px 40px; }
.tviz__layers { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: center; gap: 14px; padding: 38px; }
.tviz__layer { display: flex; align-items: center; gap: 12px; padding: 14px 16px; border-radius: var(--radius-md); background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); }
.tviz__layer .ic { width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center; flex: none; }
.tviz__layer .ic svg { width: 19px; height: 19px; }
.tviz__layer b { font-size: 14px; font-weight: var(--fw-bold); color: #fff; display: block; }
.tviz__layer small { font-size: 11.5px; color: var(--color-text-on-dark-muted); }
.tviz__layer--biz .ic { background: rgba(var(--color-brand-primary-rgb),.18); color: var(--color-brand-primary); }
.tviz__layer--sys .ic { background: rgba(255,255,255,.1); color: #fff; }
.tviz__layer--tech .ic { background: var(--color-brand-primary); color: var(--color-text-on-brand); }
.tviz__conn { position: absolute; left: 56px; width: 2px; background: linear-gradient(180deg, var(--color-brand-primary), transparent); opacity: .5; }

/* ============================================================
   PRINCIPLES  (numbered vertical cards)
   ============================================================ */
.prin-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin-top: 48px; }
.prin-card { background: var(--color-bg-page); border: 1px solid var(--color-border-default); border-radius: var(--radius-lg); padding: 24px; transition: transform var(--motion-duration-standard) var(--motion-easing-standard), border-color var(--motion-duration-standard); }
.prin-card:hover { transform: translateY(-4px); border-color: var(--color-brand-tint-strong); }
.prin-card__n { font-family: var(--font-display); font-weight: 700; font-size: 15px; color: var(--color-text-brand); }
.prin-card h4 { font-size: 15px; font-weight: var(--fw-bold); margin: 14px 0 8px; line-height: 1.3; }
.prin-card p { font-size: 13px; color: var(--color-text-secondary); margin: 0; line-height: 1.55; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1080px) {
  .ahero__inner { grid-template-columns: 1fr; gap: 48px; }
  .osdiag { max-width: 420px; }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .why-grid { grid-template-columns: 1fr; }
  .proj-grid { grid-template-columns: 1fr; }
  .addexp { grid-template-columns: repeat(3, 1fr); }
  .prin-grid { grid-template-columns: repeat(3, 1fr); }
  .method__track { grid-template-columns: repeat(5, 1fr); gap: 10px; }
  .method__step h4 { font-size: 14px; }
  .method__step p { font-size: 12.5px; }
}

@media (max-width: 820px) {
  .creds__inner { flex-wrap: wrap; }
  .creds__item { flex: 1 1 calc(50% - 1px); border-left: 1px solid var(--color-border-default); border-top: 1px solid var(--color-border-default); }
  .creds__item:first-child, .creds__item:nth-child(2) { border-top: 0; }
  .creds__item:nth-child(odd) { border-left: 0; }
  /* expertise map → vertical grid */
  .emap { display: none; }
  .emap-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 36px; }
  .emap-grid .core { grid-column: 1 / -1; display: flex; align-items: center; gap: 14px; justify-content: center; padding: 18px; border-radius: var(--radius-lg); background: var(--color-ink); color: #fff; text-align: center; }
  .emap-grid .core b { font-family: var(--font-display); font-weight: 700; font-size: 18px; }
  .emap-grid .core small { font-size: 12px; color: var(--color-brand-primary); font-weight: var(--fw-bold); display: block; }
  .emap-grid .gnode { display: flex; align-items: center; gap: 9px; padding: 13px 14px; border-radius: var(--radius-md); background: var(--color-bg-page); border: 1px solid var(--color-border-default); font-size: 13.5px; font-weight: var(--fw-semibold); }
  .emap-grid .gnode .dt { width: 7px; height: 7px; border-radius: 50%; background: var(--color-brand-primary); flex: none; }
  /* methodology → vertical timeline */
  .method__track { grid-template-columns: 1fr; gap: 0; }
  .method__track::before, .method__fill { display: none; }
  .method__step { display: grid; grid-template-columns: 56px 1fr; gap: 16px; padding-bottom: 26px; }
  .method__n { margin: 0; }
  .method__step::before { content: ""; position: absolute; left: 27px; top: 56px; bottom: 0; width: 2px; background: var(--color-border-default); }
  .method__step:last-child::before { display: none; }
  .method.is-in .method__step .method__n { background: var(--color-brand-primary); border-color: var(--color-brand-primary); color: var(--color-text-on-brand); }
}

@media (max-width: 600px) {
  .addexp { grid-template-columns: 1fr; }
  .prin-grid { grid-template-columns: 1fr; }
  .emap-grid { grid-template-columns: 1fr; }
  .creds__item { flex: 1 1 100%; border-left: 0; }
  .creds__item:nth-child(2) { border-top: 1px solid var(--color-border-default); }
  .osdiag { max-width: 320px; }
  .osnode { font-size: 11px; height: 32px; padding: 0 10px 0 8px; }
  .osnode .ic { width: 20px; height: 20px; }
}