/* ==========================================================================
   DTCSoft — "DTC System" design system
   Tokens & components follow UI/docs/03-design-system.md
   ========================================================================== */

/* ---------- 1. Tokens ---------- */
:root {
  --navy-950: #050B1A;
  --navy-900: #0A1428;
  --navy-800: #101E3A;
  --navy-700: #1A2B4F;
  --navy-600: #2A3D66;

  --blue-700: #1A45D1;
  --blue-600: #2457F5;
  --blue-500: #4775FF;
  --blue-100: #DCE6FF;
  --blue-50: #EFF4FF;

  --cyan-500: #13B5D6;
  --cyan-400: #3DD2EE;
  --cyan-50: #E7F9FD;

  --ink-900: #0B1324;
  --ink-700: #33405A;
  --ink-500: #5F6B82;
  --ink-400: #8792A8;
  --line: #E3E8F0;
  --line-strong: #CDD5E1;
  --surface: #F5F7FB;
  --white: #FFFFFF;

  --success: #12A877;
  --warning: #E5A00D;
  --danger: #E5484D;

  --on-dark: #E8EDF7;
  --on-dark-2: #A7B3CC;
  --on-dark-3: #7584A3;

  --font-sans: 'Be Vietnam Pro', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Consolas, monospace;

  --r-xs: 4px;
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 24px;
  --r-pill: 999px;

  --shadow-sm: 0 1px 2px rgb(11 19 36 / .06);
  --shadow-lg: 0 24px 48px -24px rgb(11 19 36 / .25);

  --ease: cubic-bezier(.2, .7, .2, 1);
  --t-fast: 150ms;
  --t-med: 250ms;
  --t-slow: 450ms;

  --container: 1280px;
  --gutter: 40px;
  --section-y: 128px;
  --head-gap: 56px;
  --header-h: 76px;
}

@media (max-width: 1199px) {
  :root { --gutter: 32px; --section-y: 96px; --head-gap: 48px; }
}
@media (max-width: 767px) {
  :root { --gutter: 20px; --section-y: 72px; --head-gap: 32px; --header-h: 64px; }
}

/* ---------- 2. Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink-700);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
[hidden] { display: none !important; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
h1, h2, h3, h4 { color: var(--ink-900); margin: 0; font-weight: 700; text-wrap: balance; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
:focus-visible { outline: 2px solid var(--blue-500); outline-offset: 3px; border-radius: 4px; }
::selection { background: var(--blue-100); color: var(--ink-900); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; left: 16px; top: -60px; z-index: 100; background: var(--white); color: var(--ink-900); padding: 10px 16px; border-radius: var(--r-sm); font-weight: 600; }
.skip-link:focus { top: 12px; }
.mono { font-family: var(--font-mono); }

.container { width: 100%; max-width: calc(var(--container) + var(--gutter) * 2); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: var(--section-y); }
.section--surface { background: var(--surface); }
.section--dark { background: var(--navy-900); color: var(--on-dark-2); }
.section--dark h2, .section--dark h3 { color: var(--white); }

/* ---------- 3. Typography ---------- */
.display {
  font-size: clamp(40px, 5.2vw, 68px);
  line-height: 1.04;
  letter-spacing: -.035em;
  font-weight: 700;
}
.h2 { font-size: clamp(30px, 3.4vw, 46px); line-height: 1.1; letter-spacing: -.03em; }
.h3 { font-size: clamp(22px, 2vw, 26px); line-height: 1.25; letter-spacing: -.015em; font-weight: 600; }
.lead { font-size: clamp(17px, 1.4vw, 19px); line-height: 1.6; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 12px; font-weight: 500;
  letter-spacing: .1em; text-transform: uppercase; color: var(--blue-600);
  line-height: 1;
}
.eyebrow::before { content: ""; width: 20px; height: 1px; background: currentColor; }
.section--dark .eyebrow, .eyebrow--dark { color: var(--cyan-400); }

.section-head { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 24px 48px; align-items: end; margin-bottom: var(--head-gap); }
.section-head__title { display: grid; gap: 18px; }
.section-head__lead { color: var(--ink-500); font-size: 17px; max-width: 46ch; justify-self: end; }
.section--dark .section-head__lead { color: var(--on-dark-2); }
.section-head--stack { grid-template-columns: 1fr; }
.section-head--stack .section-head__lead { justify-self: start; }
@media (max-width: 1023px) {
  .section-head { grid-template-columns: 1fr; }
  .section-head__lead { justify-self: start; }
}

/* ---------- 4. Buttons & links ---------- */
.btn {
  --h: 44px;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: var(--h); padding-inline: 18px;
  border-radius: var(--r-sm); border: 1px solid transparent;
  font-size: 15px; font-weight: 600; line-height: 1; white-space: nowrap;
  transition: background var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}
.btn--lg { --h: 52px; padding-inline: 24px; }
.btn--sm { --h: 36px; padding-inline: 14px; font-size: 14px; }
.btn--block { width: 100%; }
.btn--primary { background: var(--blue-600); color: var(--white); }
.btn--primary:hover { background: var(--blue-700); }
.btn--secondary { background: transparent; border-color: var(--line-strong); color: var(--ink-900); }
.btn--secondary:hover { border-color: var(--ink-900); }
.btn--ghost-dark { background: transparent; border-color: var(--navy-600); color: var(--white); }
.btn--ghost-dark:hover { border-color: var(--blue-500); }
.btn--white { background: var(--white); color: var(--ink-900); }
.btn--white:hover { background: var(--blue-50); }
.btn svg { width: 16px; height: 16px; transition: transform var(--t-fast) var(--ease); }
.btn:hover svg { transform: translateX(3px); }

.link-arrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 15px; font-weight: 600; color: var(--blue-600);
}
.link-arrow::after {
  content: "→"; font-family: var(--font-mono); transition: transform var(--t-fast) var(--ease);
}
.link-arrow:hover::after, a:hover .link-arrow::after { transform: translateX(3px); }
.section--dark .link-arrow, .link-arrow--dark, .svc--dark .link-arrow { color: var(--cyan-400); }

/* ---------- 5. Pills / tags ---------- */
.pill {
  display: inline-flex; align-items: center; height: 30px; padding-inline: 12px;
  border: 1px solid var(--line); border-radius: var(--r-pill); background: var(--white);
  font-family: var(--font-mono); font-size: 12.5px; color: var(--ink-700); white-space: nowrap;
}
.tag {
  display: inline-flex; align-items: center; gap: 6px; height: 26px; padding-inline: 10px;
  border-radius: var(--r-xs); background: var(--blue-50); color: var(--blue-700);
  font-family: var(--font-mono); font-size: 11.5px; font-weight: 500; letter-spacing: .04em; text-transform: uppercase;
}
.tag--cyan { background: var(--cyan-50); color: #0B7F97; }

/* ==========================================================================
   Header, mega-menu, drawer
   ========================================================================== */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  height: var(--header-h);
  color: var(--white);
  transition: background var(--t-med) var(--ease), border-color var(--t-med) var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.is-solid, .site-header.is-open { background: rgb(10 20 40 / .96); border-bottom-color: var(--navy-700); backdrop-filter: saturate(140%) blur(10px); }
.header__inner { height: 100%; display: flex; align-items: center; gap: 32px; }

.logo { display: inline-flex; align-items: center; gap: 10px; color: var(--white); flex: none; }
.logo svg { width: 30px; height: 30px; }
.logo__word { font-size: 20px; font-weight: 700; letter-spacing: -.02em; }
.logo__word span { font-weight: 400; color: var(--on-dark-2); }

.nav { flex: 1; display: flex; justify-content: center; }
.nav__list { display: flex; gap: 4px; }
.nav__link {
  display: inline-flex; align-items: center; gap: 6px; height: 40px; padding-inline: 12px;
  border: 0; background: none; border-radius: var(--r-sm);
  color: var(--on-dark-2); font-size: 14.5px; font-weight: 500;
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.nav__link:hover, .nav__link[aria-expanded="true"] { color: var(--white); background: rgb(255 255 255 / .06); }
.nav__link svg { width: 12px; height: 12px; transition: transform var(--t-fast) var(--ease); }
.nav__link[aria-expanded="true"] svg { transform: rotate(180deg); }

.header__actions { display: flex; align-items: center; gap: 16px; flex: none; }
.lang { font-family: var(--font-mono); font-size: 12px; color: var(--on-dark-3); letter-spacing: .04em; }
.lang b { color: var(--white); font-weight: 500; }
.lang:hover { color: var(--white); }

.menu-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--navy-600); border-radius: var(--r-sm); background: none; color: var(--white); align-items: center; justify-content: center; }
.menu-toggle svg { width: 20px; height: 20px; }

/* Mega-menu */
.mega {
  position: absolute; left: 0; right: 0; top: 100%;
  background: var(--white); color: var(--ink-700);
  border-bottom: 1px solid var(--line); box-shadow: 0 30px 60px -30px rgb(11 19 36 / .35);
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity var(--t-med) var(--ease), transform var(--t-med) var(--ease), visibility 0s linear var(--t-med);
}
.mega.is-open { opacity: 1; visibility: visible; transform: none; transition-delay: 0s; }
.mega__inner { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 40px; padding-block: 36px 40px; }
.mega__label { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-400); margin-bottom: 16px; }
.mega__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 4px 24px; }
.mega__link { display: grid; gap: 2px; padding: 12px 14px; margin-inline: -14px; border-radius: var(--r-md); transition: background var(--t-fast) var(--ease); }
.mega__link:hover { background: var(--surface); }
.mega__link b { color: var(--ink-900); font-weight: 600; font-size: 15px; }
.mega__link span { font-size: 13.5px; color: var(--ink-500); line-height: 1.5; }
.mega__aside { background: var(--surface); border-radius: var(--r-lg); padding: 24px; display: flex; flex-direction: column; gap: 14px; }
.mega__aside a:not(.btn) { font-size: 14.5px; font-weight: 500; color: var(--ink-900); }
.mega__aside a:not(.btn):hover { color: var(--blue-600); }
.mega__aside p { font-size: 13.5px; color: var(--ink-500); line-height: 1.55; }
.mega__aside .btn { margin-top: auto; }

/* Drawer (mobile) */
.drawer {
  position: fixed; inset: var(--header-h) 0 0 0; z-index: 49;
  background: var(--navy-900); color: var(--on-dark);
  display: flex; flex-direction: column;
  overflow-y: auto; overscroll-behavior: contain;
  padding: 8px var(--gutter) calc(24px + env(safe-area-inset-bottom));
}
.drawer[hidden] { display: none; }
.drawer__group { border-bottom: 1px solid var(--navy-700); }
.drawer__toggle, .drawer__link {
  width: 100%; display: flex; justify-content: space-between; align-items: center;
  min-height: 60px; background: none; border: 0; padding: 0;
  font-size: 19px; font-weight: 600; color: var(--white); text-align: left;
}
.drawer__toggle svg { width: 16px; height: 16px; transition: transform var(--t-fast) var(--ease); }
.drawer__toggle[aria-expanded="true"] svg { transform: rotate(180deg); }
.drawer__sub { display: grid; gap: 2px; padding-bottom: 16px; }
.drawer__sub[hidden] { display: none; }
.drawer__sub a { padding: 10px 0; color: var(--on-dark-2); font-size: 15.5px; }
.drawer__foot { margin-top: auto; padding-top: 28px; display: grid; gap: 12px; }
.drawer__contact { display: flex; justify-content: space-between; font-size: 14px; color: var(--on-dark-2); }

@media (max-width: 1199px) {
  .nav, .header__actions .lang, .header__actions .btn { display: none; }
  .menu-toggle { display: inline-flex; }
  .header__inner { justify-content: space-between; }
}

/* Sticky CTA bar (mobile) */
.mbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
  display: none; gap: 10px;
  padding: 10px var(--gutter) calc(10px + env(safe-area-inset-bottom));
  background: rgb(10 20 40 / .97); border-top: 1px solid var(--navy-700);
  transform: translateY(110%); transition: transform var(--t-med) var(--ease);
}
.mbar.is-visible { transform: none; }
.mbar .btn--primary { flex: 1; }
.mbar__call { width: 52px; flex: none; padding: 0; }
.mbar__call svg { width: 18px; height: 18px; }
@media (max-width: 767px) { .mbar { display: flex; } }

/* ==========================================================================
   01 Hero
   ========================================================================== */
.hero {
  position: relative; overflow: hidden;
  background: var(--navy-900); color: var(--on-dark-2);
  padding-top: calc(var(--header-h) + 72px);
}
.hero__bg {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(60% 70% at 88% 8%, rgb(36 87 245 / .22), transparent 70%),
    radial-gradient(40% 50% at 10% 100%, rgb(19 181 214 / .08), transparent 70%),
    linear-gradient(rgb(255 255 255 / .035) 1px, transparent 1px) 0 0 / 64px 64px,
    linear-gradient(90deg, rgb(255 255 255 / .035) 1px, transparent 1px) 0 0 / 64px 64px;
  mask-image: linear-gradient(180deg, #000 60%, transparent);
}
.hero__grid { position: relative; display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 56px; align-items: center; padding-bottom: 88px; }
.hero__copy { display: grid; gap: 28px; justify-items: start; }
.hero h1 { color: var(--white); }
.hero h1 .hl { color: var(--blue-500); }
.hero__lead { color: var(--on-dark-2); max-width: 52ch; }
.hero__caps { display: flex; flex-wrap: wrap; gap: 8px; }
.hero__caps li {
  display: inline-flex; align-items: center; gap: 8px; height: 34px; padding-inline: 14px;
  border: 1px solid var(--navy-600); border-radius: var(--r-pill);
  font-size: 13.5px; font-weight: 500; color: var(--on-dark);
}
.hero__caps li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan-400); }
.hero__ctas { display: flex; flex-wrap: wrap; gap: 12px; padding-top: 4px; }

/* System map (SVG) */
.sysmap { margin: 0; position: relative; }
.sysmap__svg { width: 100%; height: auto; overflow: visible; }
.sm-label { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .12em; fill: var(--on-dark-3); }
.sm-label--core { fill: var(--cyan-400); }
.sm-node rect { fill: var(--navy-800); stroke: var(--navy-700); transition: stroke var(--t-fast) var(--ease), fill var(--t-fast) var(--ease); }
.sm-node text { font-family: var(--font-mono); font-size: 12px; fill: #C9D3E8; }
.sm-node circle { fill: var(--on-dark-3); }
.sm-node--out rect { fill: rgb(36 87 245 / .12); stroke: rgb(71 117 255 / .5); }
.sm-node--out text { fill: var(--white); }
.sm-node--out circle { fill: var(--cyan-400); }
.sm-core { fill: rgb(255 255 255 / .015); stroke: var(--navy-600); stroke-dasharray: 4 5; }
.sm-layer rect { fill: var(--navy-800); stroke: var(--navy-700); }
.sm-layer__t { font-family: var(--font-sans); font-size: 14px; font-weight: 600; fill: var(--white); }
.sm-layer__s { font-family: var(--font-mono); font-size: 10.5px; fill: var(--on-dark-3); }
.sm-layer__dot { fill: var(--success); }
.sm-wire { stroke: var(--navy-600); stroke-width: 1.25; fill: none; transition: stroke var(--t-fast) var(--ease); }
.sm-pulse { fill: var(--cyan-400); }
.sm-bus { stroke: var(--navy-700); stroke-width: 1; stroke-dasharray: 2 4; }
.sysmap.is-hot .sm-wire { stroke: rgb(42 61 102 / .45); }
.sysmap .sm-wire.is-hot { stroke: var(--cyan-400); }
.sysmap .sm-node.is-hot rect { stroke: var(--cyan-400); }
.sysmap__caption { margin-top: 18px; display: flex; justify-content: space-between; gap: 16px; font-family: var(--font-mono); font-size: 11.5px; color: var(--on-dark-3); }

/* Mobile system map */
.sysmap-m { display: none; }
.sysmap-m__row { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
.sysmap-m__row span { font-family: var(--font-mono); font-size: 11.5px; padding: 7px 10px; border-radius: var(--r-sm); background: var(--navy-800); border: 1px solid var(--navy-700); color: #C9D3E8; }
.sysmap-m__row--out span { background: rgb(36 87 245 / .14); border-color: rgb(71 117 255 / .5); color: var(--white); }
.sysmap-m__wire { position: relative; width: 1px; height: 28px; margin: 6px auto; background: var(--navy-600); overflow: hidden; }
.sysmap-m__wire::after { content: ""; position: absolute; left: -2px; width: 5px; height: 5px; border-radius: 50%; background: var(--cyan-400); animation: drop 1.8s linear infinite; }
.sysmap-m__core { border: 1px dashed var(--navy-600); border-radius: var(--r-md); padding: 14px; text-align: center; }
.sysmap-m__core b { display: block; color: var(--white); font-size: 15px; }
.sysmap-m__core small { font-family: var(--font-mono); font-size: 11px; color: var(--cyan-400); letter-spacing: .04em; }
@keyframes drop { from { top: -6px; } to { top: 100%; } }

/* Lifecycle strip */
.lifecycle { position: relative; border-top: 1px solid var(--navy-700); background: rgb(5 11 26 / .5); }
.lifecycle__list { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); counter-reset: lc; }
.lifecycle__item {
  position: relative; padding: 22px 20px 24px; border-left: 1px solid var(--navy-700);
  display: grid; gap: 2px; cursor: default; transition: background var(--t-med) var(--ease);
}
.lifecycle__item:last-child { border-right: 1px solid var(--navy-700); }
.lifecycle__item::before { content: ""; position: absolute; left: -1px; right: 0; top: -1px; height: 2px; background: var(--cyan-400); transform: scaleX(0); transform-origin: left; transition: transform var(--t-slow) var(--ease); }
.lifecycle__item.is-active { background: rgb(36 87 245 / .08); }
.lifecycle__item.is-active::before { transform: scaleX(1); }
.lifecycle__num { font-family: var(--font-mono); font-size: 11.5px; color: var(--on-dark-3); }
.lifecycle__item b { color: var(--white); font-size: 16px; font-weight: 600; }
.lifecycle__item small { font-family: var(--font-mono); font-size: 11.5px; color: var(--on-dark-3); }
.lifecycle__item.is-active .lifecycle__num { color: var(--cyan-400); }
.lifecycle__label { position: absolute; left: var(--gutter); top: -30px; }

@media (max-width: 1023px) {
  .hero__grid { grid-template-columns: 1fr; gap: 48px; }
}
@media (max-width: 767px) {
  .hero { padding-top: calc(var(--header-h) + 40px); }
  .hero__grid { padding-bottom: 56px; gap: 40px; }
  .hero__ctas { width: 100%; }
  .hero__ctas .btn { flex: 1 1 100%; }
  .sysmap { display: none; }
  .sysmap-m { display: block; }
  .lifecycle .container { padding-inline: 0; }
  .lifecycle__list { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; padding-inline: var(--gutter); }
  .lifecycle__list::-webkit-scrollbar { display: none; }
  .lifecycle__item { flex: 0 0 40%; scroll-snap-align: start; padding: 18px 16px; }
}

/* ==========================================================================
   03 Problem → Solution
   ========================================================================== */
.problems { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 32px; align-items: start; }
.problems__tabs { display: grid; gap: 10px; }
.problem-tab {
  display: grid; grid-template-columns: auto 1fr; gap: 4px 18px; align-items: start;
  width: 100%; text-align: left; padding: 22px 24px;
  background: var(--white); border: 1px solid var(--line); border-radius: var(--r-lg);
  transition: border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.problem-tab:hover { border-color: var(--line-strong); }
.problem-tab[aria-selected="true"] { border-color: var(--ink-900); box-shadow: inset 3px 0 0 var(--blue-600); }
.problem-tab__num { grid-row: span 3; font-family: var(--font-mono); font-size: 12px; color: var(--ink-400); padding-top: 4px; }
.problem-tab[aria-selected="true"] .problem-tab__num { color: var(--blue-600); }
.problem-tab__title { color: var(--ink-900); font-size: 18px; font-weight: 600; line-height: 1.35; }
.problem-tab__sign { font-size: 14px; color: var(--ink-500); line-height: 1.5; }
.problem-tab__to { margin-top: 8px; font-family: var(--font-mono); font-size: 12px; color: var(--blue-600); letter-spacing: .02em; }

.problem-panel { border: 1px solid var(--line); border-radius: var(--r-xl); background: var(--white); overflow: hidden; }
.problem-panel[hidden] { display: none; }
.problem-panel.is-entering { animation: fadeIn var(--t-med) var(--ease); }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.ba { display: grid; grid-template-columns: 1fr 1fr; }
.ba__col { padding: 28px; display: flex; flex-direction: column; gap: 18px; min-width: 0; }
.ba__col--before { background: var(--surface); border-right: 1px solid var(--line); }
.ba__label { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-400); display: flex; align-items: center; gap: 8px; }
.ba__label::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--danger); }
.ba__label--after { color: var(--blue-600); }
.ba__label--after::before { background: var(--success); }

.scraps { position: relative; height: 360px; }
.scrap {
  position: absolute; max-width: 78%;
  display: flex; align-items: center; gap: 8px;
  padding: 9px 12px; background: var(--white); border: 1px solid var(--line-strong); border-radius: var(--r-sm);
  box-shadow: var(--shadow-sm); font-size: 13px; color: var(--ink-700); line-height: 1.35;
}
.scrap__src { flex: none; font-family: var(--font-mono); font-size: 10px; font-weight: 500; padding: 2px 5px; border-radius: 3px; background: var(--surface); color: var(--ink-500); border: 1px solid var(--line); }
.scrap:nth-child(1) { top: 0; left: 0; transform: rotate(-2deg); }
.scrap:nth-child(2) { top: 25%; left: 16%; transform: rotate(1.5deg); }
.scrap:nth-child(3) { top: 50%; left: 2%; transform: rotate(-1.5deg); }
.scrap:nth-child(4) { top: 75%; left: 12%; transform: rotate(2deg); }
.pain {
  position: absolute; right: 0; font-size: 12px; font-weight: 600; color: #B4262B;
  background: #FDECEC; border: 1px solid #F6C9CA; padding: 4px 9px; border-radius: var(--r-pill); white-space: nowrap;
}
.pain--a { top: 16%; transform: rotate(2deg); }
.pain--b { top: 66%; transform: rotate(-2deg); }
.ba__result { margin-top: auto; padding-top: 16px; border-top: 1px dashed var(--line-strong); font-size: 14.5px; color: var(--ink-900); font-weight: 500; line-height: 1.5; }
.problem-panel__foot { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 18px 28px; border-top: 1px solid var(--line); flex-wrap: wrap; }
.problem-panel__foot p { font-size: 14px; color: var(--ink-500); }

/* Flow (shared) */
.flow { display: flex; gap: 0; counter-reset: fl; }
.flow__node {
  position: relative; display: grid; gap: 2px;
  padding: 10px 12px; border: 1px solid var(--line-strong); border-radius: var(--r-sm); background: var(--white);
}
.flow__node b { font-size: 14px; font-weight: 600; color: var(--ink-900); line-height: 1.3; }
.flow__node small { font-family: var(--font-mono); font-size: 11px; color: var(--ink-500); line-height: 1.4; }
.flow__node--key { border-color: var(--blue-600); background: var(--blue-50); }
.flow__node--ai { border-color: var(--cyan-500); background: var(--cyan-50); }
/* vertical */
.flow--v { flex-direction: column; gap: 14px; }
.flow--v .flow__node:not(:last-child)::after {
  content: ""; position: absolute; left: 20px; top: 100%; width: 1px; height: 14px; background: var(--line-strong);
}
/* horizontal */
.flow--h { flex-wrap: wrap; gap: 14px 22px; align-items: stretch; }
.flow--h .flow__node { flex: 1 1 120px; }
.flow--h .flow__node:not(:last-child)::after {
  content: ""; position: absolute; top: 50%; left: 100%; width: 22px; height: 1px;
  background: linear-gradient(90deg, var(--navy-600), var(--navy-600)) 0 0 / 100% 100% no-repeat;
}

@media (max-width: 1023px) {
  .problems { grid-template-columns: 1fr; }
  .problems__tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 767px) {
  .problems__tabs { gap: 8px; }
  .problem-tab { padding: 14px; grid-template-columns: 1fr; gap: 2px; }
  .problem-tab__num { grid-row: auto; padding-top: 0; }
  .problem-tab__title { font-size: 15px; }
  .problem-tab__sign { display: none; }
  .problem-tab__to { font-size: 11px; margin-top: 4px; }
  .ba { grid-template-columns: 1fr; }
  .ba__col { padding: 20px; }
  .ba__col--before { border-right: 0; border-bottom: 1px solid var(--line); }
  .scraps { height: 330px; }
  .scrap { font-size: 12px; max-width: 84%; }
  .pain { font-size: 11px; }
  .problem-panel__foot { padding: 16px 20px; }
}

/* ==========================================================================
   04 Services (bento + viz)
   ========================================================================== */
.bento { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 24px; }
.svc {
  position: relative; grid-column: span 2;
  display: flex; flex-direction: column; overflow: hidden;
  background: var(--white); border: 1px solid var(--line); border-radius: var(--r-lg);
  transition: border-color var(--t-fast) var(--ease), transform var(--t-med) var(--ease), box-shadow var(--t-med) var(--ease);
}
.svc:hover { border-color: var(--line-strong); transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.svc--wide { grid-column: span 3; }
.svc--dark { background: var(--navy-900); border-color: var(--navy-900); color: var(--on-dark-2); }
.svc--dark:hover { border-color: var(--navy-600); }
.svc__viz { height: 220px; padding: 28px; display: flex; align-items: center; justify-content: center; border-bottom: 1px solid var(--line); background: linear-gradient(180deg, var(--surface), var(--white)); }
.svc--wide .svc__viz { height: 260px; }
.svc--dark .svc__viz { background: radial-gradient(70% 90% at 80% 0%, rgb(36 87 245 / .2), transparent 70%); border-color: var(--navy-700); }
.svc__body { padding: 28px 32px 32px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.svc__num { font-family: var(--font-mono); font-size: 12px; color: var(--blue-600); letter-spacing: .06em; }
.svc--dark .svc__num { color: var(--cyan-400); }
.svc__title { font-size: 22px; line-height: 1.3; letter-spacing: -.015em; font-weight: 600; }
.svc__title a::after { content: ""; position: absolute; inset: 0; }
.svc--dark .svc__title { color: var(--white); }
.svc__en { font-family: var(--font-mono); font-size: 12px; color: var(--ink-400); margin-top: -6px; }
.svc--dark .svc__en { color: var(--on-dark-3); }
.svc__desc { font-size: 15px; color: var(--ink-500); line-height: 1.6; }
.svc--dark .svc__desc { color: var(--on-dark-2); }
.svc__tags { font-family: var(--font-mono); font-size: 12px; color: var(--ink-700); line-height: 1.8; }
.svc--dark .svc__tags { color: var(--on-dark); }
.svc .link-arrow { margin-top: auto; padding-top: 8px; }
.svc__num .tag { margin-left: 10px; height: 22px; font-size: 10.5px; vertical-align: middle; }
.svc--dark .tag--cyan { background: rgb(19 181 214 / .14); color: var(--cyan-400); }

/* viz: modules */
.vm { width: 100%; max-width: 440px; display: grid; gap: 14px; }
.vm__grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.vm__grid span {
  position: relative; text-align: center; font-family: var(--font-mono); font-size: 12px; color: var(--ink-700);
  padding: 12px 4px; background: var(--white); border: 1px solid var(--line-strong); border-radius: var(--r-sm);
}
.vm__grid span.is-on { border-color: var(--blue-600); color: var(--blue-700); background: var(--blue-50); }
.vm__grid span:nth-child(n+5)::after { content: ""; position: absolute; left: 50%; top: 100%; width: 1px; height: 14px; background: var(--line-strong); }
.vm__bus { text-align: center; font-family: var(--font-mono); font-size: 11.5px; color: var(--white); background: var(--ink-900); border-radius: var(--r-sm); padding: 10px; letter-spacing: .04em; }

/* viz: AI flow (dark) */
.va { width: 100%; max-width: 480px; display: grid; grid-template-columns: 1fr 22px 1fr 22px 1.15fr; align-items: center; }
.va__node { padding: 10px 12px; border-radius: var(--r-sm); background: var(--navy-800); border: 1px solid var(--navy-700); display: grid; gap: 2px; }
.va__node b { color: var(--white); font-size: 13px; font-weight: 600; }
.va__node small { font-family: var(--font-mono); font-size: 10.5px; color: var(--on-dark-3); }
.va__node--ai { border-color: var(--cyan-500); background: rgb(19 181 214 / .1); }
.va__node--ai small { color: var(--cyan-400); }
.va__wire { height: 1px; background: var(--navy-600); position: relative; overflow: hidden; }
.va__wire::after { content: ""; position: absolute; top: -2px; width: 5px; height: 5px; border-radius: 50%; background: var(--cyan-400); animation: slide 1.6s linear infinite; }
.va__wire:nth-of-type(2)::after { animation-delay: .8s; }
.va__branch { display: grid; gap: 8px; position: relative; padding-left: 12px; }
.va__branch::before { content: ""; position: absolute; left: 0; top: 22px; bottom: 22px; width: 1px; background: var(--navy-600); }
.va__branch .va__node { position: relative; }
.va__branch .va__node::before { content: ""; position: absolute; right: 100%; top: 50%; width: 12px; height: 1px; background: var(--navy-600); }
@keyframes slide { from { left: -6px; } to { left: 100%; } }

/* viz: transform */
.vt { width: 100%; max-width: 360px; display: grid; grid-template-columns: 1fr 40px 1.2fr; align-items: center; gap: 6px; }
.vt__old { display: grid; gap: 6px; }
.vt__old span { font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-500); background: var(--white); border: 1px dashed var(--line-strong); border-radius: var(--r-xs); padding: 6px 8px; }
.vt__old span:nth-child(odd) { transform: translateX(6px) rotate(-1.5deg); }
.vt__old span:nth-child(even) { transform: rotate(1.5deg); }
.vt__arrow { text-align: center; font-family: var(--font-mono); color: var(--blue-600); }
.vt__new { border: 1px solid var(--blue-600); border-radius: var(--r-sm); background: var(--white); padding: 12px; display: grid; gap: 7px; box-shadow: 0 10px 30px -18px rgb(36 87 245 / .6); }
.vt__new b { font-size: 12.5px; color: var(--ink-900); font-weight: 600; }
.vt__new i { height: 7px; border-radius: 2px; background: var(--blue-100); }
.vt__new i:nth-of-type(2) { width: 75%; }
.vt__new i:nth-of-type(3) { width: 55%; background: var(--cyan-50); }

/* viz: devices */
.vd { position: relative; width: 100%; max-width: 330px; height: 160px; }
.vd__browser { position: absolute; left: 0; top: 0; width: 82%; height: 150px; background: var(--white); border: 1px solid var(--line-strong); border-radius: var(--r-sm); overflow: hidden; }
.vd__bar { height: 20px; border-bottom: 1px solid var(--line); display: flex; gap: 4px; align-items: center; padding-inline: 8px; }
.vd__bar i { width: 6px; height: 6px; border-radius: 50%; background: var(--line-strong); }
.vd__page { padding: 12px; display: grid; gap: 6px; }
.vd__page i { height: 7px; border-radius: 2px; background: var(--line); }
.vd__page i.h { height: 12px; width: 70%; background: var(--ink-900); }
.vd__page i.b { width: 40%; height: 14px; background: var(--blue-600); margin-top: 4px; }
.vd__phone { position: absolute; right: 0; bottom: -6px; width: 30%; height: 150px; background: var(--white); border: 1px solid var(--ink-900); border-radius: 14px; padding: 14px 8px 8px; display: grid; gap: 5px; align-content: start; box-shadow: var(--shadow-lg); }
.vd__phone i { height: 6px; border-radius: 2px; background: var(--line); }
.vd__phone i.h { height: 26px; background: var(--blue-50); border: 1px solid var(--blue-100); }
.vd__phone i.b { height: 12px; background: var(--blue-600); }

/* viz: pipeline */
.vp { width: 100%; max-width: 340px; display: grid; gap: 12px; }
.vp__steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6px; }
.vp__steps li { display: grid; gap: 6px; justify-items: center; font-family: var(--font-mono); font-size: 11px; color: var(--ink-500); }
.vp__steps li::before { content: "✓"; display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: #E3F6EF; color: var(--success); font-size: 13px; }
.vp__steps li.is-run::before { content: ""; background: var(--cyan-50); box-shadow: inset 0 0 0 8px var(--cyan-50), inset 0 0 0 14px var(--cyan-500); animation: blink 1.6s ease-in-out infinite; }
.vp__bar { height: 4px; border-radius: 2px; background: linear-gradient(90deg, var(--success) 75%, var(--line) 75%); }
.vp__log { font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-500); background: var(--white); border: 1px solid var(--line); border-radius: var(--r-xs); padding: 7px 10px; }
.vp__log b { color: var(--success); font-weight: 500; }
@keyframes blink { 50% { opacity: .45; } }

.services__foot { margin-top: 32px; display: flex; justify-content: flex-end; }

@media (max-width: 1023px) {
  .bento { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
  .svc, .svc--wide { grid-column: span 1; }
  .svc--wide { grid-column: span 2; }
  .svc:last-child { grid-column: span 2; }
}
@media (max-width: 767px) {
  .bento { grid-template-columns: 1fr; gap: 16px; }
  .svc, .svc--wide, .svc:last-child { grid-column: auto; }
  .svc__viz, .svc--wide .svc__viz { height: auto; min-height: 190px; padding: 24px 20px; }
  .svc__body { padding: 22px 22px 24px; }
  .svc__title { font-size: 20px; }
  .va { grid-template-columns: 1fr 14px 1fr 14px 1.1fr; }
  .va__node { padding: 8px; }
  .va__node b { font-size: 12px; }
  .va__node small { font-size: 9.5px; }
}

/* ==========================================================================
   05 Solutions
   ========================================================================== */
.solutions { position: relative; overflow: hidden; }
.solutions::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(50% 60% at 100% 0%, rgb(36 87 245 / .16), transparent 70%),
    linear-gradient(rgb(255 255 255 / .03) 1px, transparent 1px) 0 0 / 64px 64px,
    linear-gradient(90deg, rgb(255 255 255 / .03) 1px, transparent 1px) 0 0 / 64px 64px;
}
.solutions .container { position: relative; }
.sol { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 32px; align-items: start; }
.sol__tabs { display: grid; gap: 4px; }
.sol-tab {
  text-align: left; width: 100%; display: grid; gap: 2px; padding: 16px 18px;
  background: none; border: 1px solid transparent; border-radius: var(--r-md);
  transition: background var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}
.sol-tab b { color: var(--white); font-size: 16px; font-weight: 600; }
.sol-tab span { font-size: 13.5px; color: var(--on-dark-3); line-height: 1.5; }
.sol-tab:hover { background: rgb(255 255 255 / .03); }
.sol-tab[aria-selected="true"] { background: var(--navy-800); border-color: var(--navy-600); }
.sol-tab[aria-selected="true"] b::after { content: " →"; font-family: var(--font-mono); color: var(--cyan-400); }
.sol-panel { background: var(--navy-800); border: 1px solid var(--navy-700); border-radius: var(--r-xl); padding: 36px; display: grid; gap: 32px; }
.sol-panel[hidden] { display: none; }
.sol-panel__head { display: grid; gap: 10px; }
.sol-panel__head .mono { font-size: 11.5px; letter-spacing: .1em; color: var(--cyan-400); }
.sol-panel__head p:last-child { color: var(--on-dark-2); max-width: 60ch; }
:is(.sol-panel, .flow--dark) .flow__node { background: var(--navy-900); border-color: var(--navy-600); }
:is(.sol-panel, .flow--dark) .flow__node b { color: var(--white); }
:is(.sol-panel, .flow--dark) .flow__node small { color: var(--on-dark-3); }
:is(.sol-panel, .flow--dark) .flow__node--key { border-color: var(--blue-500); background: rgb(36 87 245 / .14); }
:is(.sol-panel, .flow--dark) .flow__node--ai { border-color: var(--cyan-500); background: rgb(19 181 214 / .1); }
:is(.sol-panel, .flow--dark) .flow__node--ai small { color: var(--cyan-400); }
.sol-panel.is-entering .flow__node { animation: nodeIn var(--t-slow) var(--ease) both; }
.sol-panel.is-entering .flow__node:nth-child(2) { animation-delay: 60ms; }
.sol-panel.is-entering .flow__node:nth-child(3) { animation-delay: 120ms; }
.sol-panel.is-entering .flow__node:nth-child(4) { animation-delay: 180ms; }
.sol-panel.is-entering .flow__node:nth-child(5) { animation-delay: 240ms; }
.sol-panel.is-entering .flow__node:nth-child(6) { animation-delay: 300ms; }
@keyframes nodeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.sol-panel__foot { display: flex; justify-content: space-between; align-items: end; gap: 24px; flex-wrap: wrap; padding-top: 24px; border-top: 1px solid var(--navy-700); }
.sol-panel__parts { display: grid; gap: 8px; }
.sol-panel__parts li { display: flex; gap: 10px; align-items: baseline; font-size: 14.5px; color: var(--on-dark); }
.sol-panel__parts li::before { content: ""; flex: none; width: 6px; height: 6px; border-radius: 1px; background: var(--cyan-400); transform: translateY(-2px); }

@media (max-width: 1023px) {
  .sol { grid-template-columns: 1fr; }
  .sol__tabs { display: flex; overflow-x: auto; scrollbar-width: none; gap: 8px; margin-inline: calc(var(--gutter) * -1); padding-inline: var(--gutter); scroll-snap-type: x proximity; }
  .sol__tabs::-webkit-scrollbar { display: none; }
  .sol-tab { flex: none; width: auto; padding: 10px 14px; border-color: var(--navy-700); border-radius: var(--r-pill); scroll-snap-align: start; }
  .sol-tab span { display: none; }
  .sol-tab b { font-size: 14px; white-space: nowrap; }
  .sol-tab[aria-selected="true"] { background: var(--white); border-color: var(--white); }
  .sol-tab[aria-selected="true"] b { color: var(--ink-900); }
  .sol-tab[aria-selected="true"] b::after { content: ""; }
}
@media (max-width: 767px) {
  .sol-panel { padding: 22px; gap: 24px; }
  .flow--h { flex-direction: column; gap: 12px; }
  .flow--h .flow__node { flex: none; }
  .flow--h .flow__node:not(:last-child)::after { top: 100%; left: 20px; width: 1px; height: 12px; }
}

/* ==========================================================================
   06 Case studies
   ========================================================================== */
.case { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); border: 1px solid var(--line); border-radius: var(--r-xl); overflow: hidden; background: var(--white); }
.case__info { padding: 44px; display: flex; flex-direction: column; gap: 24px; }
.case__meta { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.case__client { font-family: var(--font-mono); font-size: 12px; color: var(--ink-500); }
.case__title { font-size: clamp(24px, 2.4vw, 32px); line-height: 1.2; letter-spacing: -.025em; }
.case__title small { display: block; margin-top: 8px; font-family: var(--font-mono); font-size: 12.5px; font-weight: 400; letter-spacing: 0; color: var(--ink-400); }
.case__dl { margin: 0; display: grid; gap: 18px; }
.case__dl > div { display: grid; grid-template-columns: 112px 1fr; gap: 16px; padding-top: 18px; border-top: 1px solid var(--line); }
.case__dl dt { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-400); padding-top: 3px; }
.case__dl dd { margin: 0; font-size: 15px; color: var(--ink-700); line-height: 1.6; }
.case__dl .pills { display: flex; flex-wrap: wrap; gap: 6px; }
.checks { display: grid; gap: 8px; }
.checks li { display: flex; gap: 10px; align-items: baseline; color: var(--ink-900); font-weight: 500; }
.checks li::before { content: "✓"; flex: none; display: grid; place-items: center; width: 18px; height: 18px; border-radius: 50%; background: #E3F6EF; color: var(--success); font-size: 11px; transform: translateY(2px); }
.case__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: auto; }

.case__flow {
  position: relative; padding: 44px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0;
  background:
    linear-gradient(var(--line) 1px, transparent 1px) 0 0 / 32px 32px,
    linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0 / 32px 32px,
    var(--surface);
  border-left: 1px solid var(--line);
}
.case__flow-label { position: absolute; top: 20px; left: 24px; font-family: var(--font-mono); font-size: 11px; letter-spacing: .12em; color: var(--ink-400); }
.cf-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.cf-node { padding: 14px 22px; border-radius: var(--r-sm); background: var(--white); border: 1px solid var(--line-strong); font-family: var(--font-mono); font-size: 14px; color: var(--ink-700); box-shadow: var(--shadow-sm); }
.cf-node--muted { border-style: dashed; color: var(--ink-500); }
.cf-node--key { border-color: var(--blue-600); color: var(--blue-700); background: var(--blue-50); }
.cf-node--ai { border-color: var(--cyan-500); color: #0B7F97; background: var(--cyan-50); }
.cf-wire { position: relative; width: 1.5px; height: 44px; background: var(--ink-400); }
.cf-wire::after { content: ""; position: absolute; left: -3px; bottom: -1px; border: 3.5px solid transparent; border-top: 5px solid var(--ink-400); border-bottom: 0; }
.cf-core { width: min(100%, 480px); border: 1.5px solid var(--ink-900); border-radius: var(--r-md); background: var(--white); padding: 18px; display: grid; gap: 12px; box-shadow: var(--shadow-lg); }
.cf-core__head { display: flex; justify-content: space-between; align-items: center; }
.cf-core__head b { color: var(--ink-900); font-size: 15px; }
.cf-core__head span { font-family: var(--font-mono); font-size: 11px; color: var(--success); display: inline-flex; gap: 6px; align-items: center; }
.cf-core__head span::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.cf-core__mods { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6px; }
.cf-core__mods span { text-align: center; font-size: 13px; color: var(--ink-700); padding: 10px 2px; border-radius: var(--r-xs); background: var(--surface); border: 1px solid var(--line); }

.case-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-top: 24px; }
.case-card { position: relative; display: grid; gap: 12px; padding: 28px 32px; border: 1px solid var(--line); border-radius: var(--r-lg); background: var(--white); transition: border-color var(--t-fast) var(--ease), transform var(--t-med) var(--ease); }
.case-card:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.case-card h3 { font-size: 20px; line-height: 1.3; letter-spacing: -.01em; font-weight: 600; }
.case-card h3 a::after { content: ""; position: absolute; inset: 0; }
.case-card p { font-size: 15px; color: var(--ink-500); }
.case-card__flow { font-family: var(--font-mono); font-size: 12px; color: var(--ink-700); background: var(--surface); border-radius: var(--r-xs); padding: 8px 10px; overflow-wrap: anywhere; }
.case-card__foot { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-top: 4px; flex-wrap: wrap; }
.cases__foot { margin-top: 32px; display: flex; justify-content: flex-end; }

@media (max-width: 1023px) {
  .case { grid-template-columns: 1fr; }
  .case__flow { border-left: 0; border-top: 1px solid var(--line); order: 0; }
}
@media (max-width: 767px) {
  .case__info, .case__flow { padding: 24px 20px; }
  .case__flow { padding-top: 48px; }
  .case__dl > div { grid-template-columns: 1fr; gap: 6px; }
  .case-cards { grid-template-columns: 1fr; gap: 16px; }
  .case-card { padding: 22px; }
  .cf-node { padding: 10px 12px; font-size: 12px; }
  .cf-core__mods { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .case__actions .btn { flex: 1 1 100%; }
}

/* ==========================================================================
   07 Process
   ========================================================================== */
.process { position: relative; display: grid; grid-template-columns: repeat(var(--n, 6), minmax(0, 1fr)); gap: 24px; padding-top: 28px; }
.process::before { content: ""; position: absolute; top: 18px; left: 0; right: 0; height: 1px; background: var(--line-strong); }
.process::after { content: ""; position: absolute; top: 18px; left: 0; right: 0; height: 2px; margin-top: -.5px; background: var(--blue-600); transform: scaleX(0); transform-origin: left; transition: transform 1.4s var(--ease); }
.process.is-in::after { transform: scaleX(1); }
.process__step { position: relative; display: grid; gap: 8px; align-content: start; padding-top: 28px; }
.process__dot { position: absolute; top: -22px; left: 0; width: 24px; height: 24px; border-radius: 50%; background: var(--white); border: 1.5px solid var(--ink-900); display: grid; place-items: center; }
.process__dot::after { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--blue-600); }
.process__num { font-family: var(--font-mono); font-size: 12px; color: var(--blue-600); }
.process__step h3 { font-size: 20px; letter-spacing: -.01em; }
.process__step > p { font-size: 14.5px; color: var(--ink-500); line-height: 1.55; }
.process__out { margin-top: 8px; padding: 10px 12px; border-radius: var(--r-sm); background: var(--white); border: 1px solid var(--line); font-size: 13px; color: var(--ink-700); line-height: 1.5; }
.process__out span { display: block; font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-400); margin-bottom: 2px; }
.process__foot { margin-top: 48px; display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; padding: 24px 28px; border: 1px solid var(--line); border-radius: var(--r-lg); background: var(--white); }
.process__foot p { color: var(--ink-900); font-weight: 500; }
.process__foot p span { display: block; font-weight: 400; color: var(--ink-500); font-size: 14.5px; }

@media (max-width: 1199px) {
  .process { grid-template-columns: repeat(3, minmax(0, 1fr)); row-gap: 48px; }
  .process::before, .process::after { display: none; }
  .process__step { border-top: 1px solid var(--line-strong); }
  .process__dot { top: -12px; }
}
@media (max-width: 767px) {
  .process { grid-template-columns: 1fr; gap: 0; padding-top: 0; padding-left: 36px; }
  .process::before { display: block; top: 6px; bottom: 6px; left: 11px; right: auto; width: 1px; height: auto; }
  .process::after { display: block; top: 6px; bottom: 6px; left: 10.5px; right: auto; width: 2px; height: auto; margin: 0; transform: scaleY(0); transform-origin: top; }
  .process.is-in::after { transform: scaleY(1); }
  .process__step { border-top: 0; padding: 0 0 28px; }
  .process__dot { top: 0; left: -36px; }
  .process__foot { padding: 20px; }
  .process__foot .btn { width: 100%; }
}

/* ==========================================================================
   08 Technology
   ========================================================================== */
.tech { border-top: 1px solid var(--ink-900); }
.tech__row { display: grid; grid-template-columns: 200px minmax(0, 1fr) 300px; gap: 24px; align-items: center; padding: 22px 0; border-bottom: 1px solid var(--line); }
.tech__layer { display: flex; align-items: baseline; gap: 12px; }
.tech__layer span { font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-400); }
.tech__layer b { color: var(--ink-900); font-size: 17px; font-weight: 600; }
.tech__stack { display: flex; flex-wrap: wrap; gap: 8px; }
.tech__use { font-size: 14.5px; color: var(--ink-500); line-height: 1.5; }
.tech__row--ai .pill { border-color: #B6E8F3; background: var(--cyan-50); color: #0B6A7E; }
.tech__foot { margin-top: 28px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: center; }
.tech__foot p { font-size: 14.5px; color: var(--ink-500); max-width: 62ch; }

@media (max-width: 1023px) {
  .tech__row { grid-template-columns: 160px minmax(0, 1fr); }
  .tech__use { grid-column: 2; }
}
@media (max-width: 767px) {
  .tech__row { grid-template-columns: 1fr; gap: 10px; padding: 20px 0; }
  .tech__use { grid-column: auto; }
}

/* ==========================================================================
   09 Engagement / trust
   ========================================================================== */
.engage { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.engage__card { display: flex; flex-direction: column; gap: 14px; padding: 32px; border: 1px solid var(--line); border-radius: var(--r-lg); background: var(--white); }
.engage__card .mono { font-size: 11.5px; letter-spacing: .08em; color: var(--ink-400); text-transform: uppercase; }
.engage__card h3 { font-size: 20px; font-weight: 600; letter-spacing: -.01em; }
.engage__card > p { font-size: 15px; color: var(--ink-500); }
.engage__fit { margin-top: auto; padding-top: 16px; border-top: 1px solid var(--line); font-size: 14px; color: var(--ink-700); }
.engage__fit b { display: block; font-family: var(--font-mono); font-size: 10.5px; font-weight: 500; letter-spacing: .1em; text-transform: uppercase; color: var(--blue-600); margin-bottom: 4px; }
.commit { margin-top: 24px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border: 1px solid var(--line); border-radius: var(--r-lg); background: var(--white); }
.commit li { padding: 24px 28px; display: grid; gap: 6px; border-left: 1px solid var(--line); }
.commit li:first-child { border-left: 0; }
.commit li b { color: var(--ink-900); font-size: 15.5px; font-weight: 600; display: flex; gap: 10px; align-items: center; }
.commit li b::before { content: ""; width: 8px; height: 8px; border-radius: 2px; background: var(--blue-600); flex: none; }
.commit li span { font-size: 14px; color: var(--ink-500); line-height: 1.5; }

@media (max-width: 1023px) {
  .engage { grid-template-columns: 1fr; gap: 16px; }
  .engage__card { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 10px 32px; }
  .engage__card .engage__fit { grid-column: 2; grid-row: 1 / span 3; margin: 0; padding: 0 0 0 24px; border-top: 0; border-left: 1px solid var(--line); align-self: stretch; }
  .commit { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .commit li:nth-child(3) { border-left: 0; }
  .commit li:nth-child(n+3) { border-top: 1px solid var(--line); }
}
@media (max-width: 767px) {
  .engage__card { display: flex; padding: 24px; }
  .engage__card .engage__fit { padding: 16px 0 0; border-left: 0; border-top: 1px solid var(--line); }
  .commit li { padding: 18px; }
}

/* ==========================================================================
   10 Insights
   ========================================================================== */
.posts { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 24px; }
.post-card { position: relative; display: flex; flex-direction: column; gap: 14px; }
.post-card__thumb { aspect-ratio: 16 / 10; border-radius: var(--r-lg); border: 1px solid var(--line); overflow: hidden; position: relative; background: var(--surface); }
.post-card__thumb svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.post-card__meta { display: flex; gap: 12px; align-items: center; font-family: var(--font-mono); font-size: 12px; color: var(--ink-400); }
.post-card h3 { font-size: 19px; line-height: 1.35; letter-spacing: -.01em; font-weight: 600; transition: color var(--t-fast) var(--ease); }
.post-card:first-child h3 { font-size: 23px; }
.post-card h3 a::after { content: ""; position: absolute; inset: 0; }
.post-card:hover h3 { color: var(--blue-600); }
.post-card p { font-size: 15px; color: var(--ink-500); }
@media (max-width: 1023px) { .posts { grid-template-columns: 1fr 1fr; } .post-card:first-child { grid-column: span 2; } }
@media (max-width: 767px) {
  .posts { grid-template-columns: 1fr; gap: 28px; }
  .post-card:first-child { grid-column: auto; }
  .post-card:not(:first-child) { display: grid; grid-template-columns: 112px 1fr; gap: 4px 16px; align-items: start; }
  .post-card:not(:first-child) .post-card__thumb { grid-row: span 3; aspect-ratio: 1; }
  .post-card:not(:first-child) p { display: none; }
  .post-card:not(:first-child) h3 { font-size: 16px; }
}

/* ==========================================================================
   11 Contact / Inquiry
   ========================================================================== */
.contact { position: relative; overflow: hidden; }
.contact::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(50% 70% at 0% 100%, rgb(36 87 245 / .2), transparent 70%),
    radial-gradient(40% 50% at 100% 0%, rgb(19 181 214 / .08), transparent 70%);
}
.contact__grid {
  position: relative; display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  grid-template-areas: "head form" "info form"; grid-template-rows: auto 1fr; gap: 40px 64px; align-items: start;
}
.contact__head { grid-area: head; display: grid; gap: 22px; }
.contact__head .lead { color: var(--on-dark-2); }
.contact__info { grid-area: info; display: grid; gap: 24px; }
.inquiry { grid-area: form; }
.next-steps { display: grid; gap: 0; margin-top: 8px; border-top: 1px solid var(--navy-700); }
.next-steps li { display: grid; grid-template-columns: 36px 1fr; gap: 12px; padding: 16px 0; border-bottom: 1px solid var(--navy-700); }
.next-steps li span { font-family: var(--font-mono); font-size: 12px; color: var(--cyan-400); padding-top: 3px; }
.next-steps li p { color: var(--on-dark); font-size: 15px; line-height: 1.55; }
.next-steps li p small { display: block; color: var(--on-dark-3); font-size: 13.5px; }
.contact__direct { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact__direct a { display: grid; gap: 2px; padding: 16px 18px; border: 1px solid var(--navy-700); border-radius: var(--r-md); transition: border-color var(--t-fast) var(--ease); }
.contact__direct a:hover { border-color: var(--blue-500); }
.contact__direct span { font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--on-dark-3); }
.contact__direct b { color: var(--white); font-weight: 600; font-size: 16px; }

.inquiry { background: var(--white); border-radius: var(--r-xl); padding: 40px; color: var(--ink-700); box-shadow: 0 40px 80px -40px rgb(0 0 0 / .6); }
.inquiry__head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-bottom: 28px; flex-wrap: wrap; }
.inquiry h3 { color: var(--ink-900); }
.inquiry__head h3 { font-size: 22px; letter-spacing: -.015em; }
.inquiry__head p { font-size: 13px; color: var(--ink-400); }
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { display: grid; gap: 8px; min-width: 0; }
.field--full { grid-column: 1 / -1; }
.field > label, .field > legend { font-size: 14px; font-weight: 600; color: var(--ink-900); padding: 0; }
.field > label em, .field > legend em { font-style: normal; color: var(--blue-600); }
.field input, .field select, .field textarea {
  width: 100%; height: 48px; padding: 0 14px;
  border: 1px solid var(--line-strong); border-radius: var(--r-sm); background: var(--white);
  font-size: 15px; color: var(--ink-900);
  transition: border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}
.field textarea { height: auto; min-height: 112px; padding: 12px 14px; resize: vertical; line-height: 1.55; }
.field select { appearance: none; background: var(--white) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%235F6B82' stroke-width='1.6'%3E%3Cpath d='M2 4l4 4 4-4'/%3E%3C/svg%3E") no-repeat right 14px center; padding-right: 36px; }
.field input::placeholder, .field textarea::placeholder { color: var(--ink-400); }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--blue-600); box-shadow: 0 0 0 3px rgb(36 87 245 / .15); }
.field.is-invalid input { border-color: var(--danger); }
.field__error { font-size: 13px; color: #B4262B; display: none; }
.field.is-invalid .field__error { display: block; }
fieldset.field { border: 0; margin: 0; padding: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { position: relative; }
.chip input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.chip span {
  display: inline-flex; align-items: center; gap: 6px; height: 38px; padding-inline: 14px;
  border: 1px solid var(--line-strong); border-radius: var(--r-pill); font-size: 14px; color: var(--ink-700); cursor: pointer;
  transition: all var(--t-fast) var(--ease); user-select: none;
}
.chip span:hover { border-color: var(--ink-500); }
.chip input:checked + span { background: var(--ink-900); border-color: var(--ink-900); color: var(--white); }
.chip input:checked + span::before { content: "✓"; font-size: 12px; }
.chip input:focus-visible + span { outline: 2px solid var(--blue-500); outline-offset: 2px; }
.form__foot { grid-column: 1 / -1; display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; padding-top: 4px; }
.form__note { font-size: 13px; color: var(--ink-500); max-width: 40ch; line-height: 1.5; }
.inquiry__done { display: grid; gap: 14px; justify-items: start; padding: 24px 0; }
.inquiry__done[hidden] { display: none; }
.inquiry__done .ok { width: 48px; height: 48px; border-radius: 50%; background: #E3F6EF; color: var(--success); display: grid; place-items: center; font-size: 22px; }
.inquiry__done h3 { font-size: 24px; }
.inquiry__done p { color: var(--ink-500); max-width: 48ch; }

@media (max-width: 1023px) {
  .contact__grid { grid-template-columns: 1fr; grid-template-areas: "head" "form" "info"; gap: 40px; }
}
@media (max-width: 767px) {
  .contact__grid { gap: 32px; }
  .inquiry { padding: 24px 20px; border-radius: var(--r-lg); }
  .form { grid-template-columns: 1fr; gap: 18px; }
  .form__foot .btn { width: 100%; }
  .contact__direct { grid-template-columns: 1fr; }
}

/* ==========================================================================
   12 Footer
   ========================================================================== */
.site-footer { background: var(--navy-950); color: var(--on-dark-3); padding: 88px 0 calc(32px + env(safe-area-inset-bottom)); font-size: 14.5px; }
.footer__top { display: grid; grid-template-columns: 1.6fr repeat(4, 1fr); gap: 40px; padding-bottom: 56px; border-bottom: 1px solid var(--navy-800); }
.footer__brand { display: grid; gap: 18px; align-content: start; }
.footer__tagline { color: var(--white); font-size: 17px; font-weight: 600; letter-spacing: -.01em; }
.footer__brandline { font-family: var(--font-mono); font-size: 12px; color: var(--cyan-400); }
.footer__legal { display: grid; gap: 6px; line-height: 1.6; font-size: 13.5px; }
.footer__legal b { color: var(--on-dark); font-weight: 500; }
.footer__col h4 { color: var(--white); font-size: 14px; font-weight: 600; margin-bottom: 16px; }
.footer__col ul { display: grid; gap: 10px; }
.footer__col a:hover { color: var(--white); }
.footer__bottom { padding-top: 28px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; }
.footer__bottom nav { display: flex; gap: 24px; flex-wrap: wrap; }
.footer__bottom a:hover { color: var(--white); }
@media (max-width: 1023px) {
  .footer__top { grid-template-columns: repeat(2, 1fr); }
  .footer__brand { grid-column: 1 / -1; }
}
@media (max-width: 767px) {
  .site-footer { padding-top: 56px; padding-bottom: calc(96px + env(safe-area-inset-bottom)); }
  .footer__top { gap: 32px 20px; }
}

/* ==========================================================================
   Motion
   ========================================================================== */
[data-reveal] { opacity: 0; transform: translateY(16px); transition: opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease); transition-delay: calc(var(--i, 0) * 60ms); }
[data-reveal].is-in { opacity: 1; transform: none; }
.no-js [data-reveal] { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
  .sm-pulse, .va__wire::after, .sysmap-m__wire::after { display: none; }
}

/* ==========================================================================
   Sub-pages — shared components
   (page-hero, breadcrumb, cards, caps, split, FAQ, CTA band, filters,
    prose/article, facts, notices)
   ========================================================================== */
.flow--dark.flow--v .flow__node:not(:last-child)::after { background: var(--navy-600); }

/* Page hero */
.page-hero { position: relative; overflow: hidden; background: var(--navy-900); color: var(--on-dark-2); padding: calc(var(--header-h) + 56px) 0 88px; }
.page-hero__grid { position: relative; display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); gap: 56px; align-items: center; }
.page-hero__grid--solo { grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); align-items: end; }
.page-hero__copy { display: grid; gap: 22px; justify-items: start; }
.page-hero h1 { color: var(--white); font-size: clamp(34px, 4.3vw, 58px); line-height: 1.06; letter-spacing: -.033em; }
.page-hero__lead { max-width: 58ch; color: var(--on-dark-2); }
.page-hero__ctas { display: flex; flex-wrap: wrap; gap: 12px; padding-top: 4px; }
.page-hero__aside { display: grid; gap: 14px; justify-items: start; color: var(--on-dark-2); font-size: 15px; }
.page-hero__meta { display: flex; flex-wrap: wrap; gap: 8px 20px; font-family: var(--font-mono); font-size: 12.5px; color: var(--on-dark-3); }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 8px; font-family: var(--font-mono); font-size: 12px; color: var(--on-dark-3); }
.breadcrumb li + li::before { content: "/"; margin-right: 8px; color: var(--navy-600); }
.breadcrumb a:hover { color: var(--white); }
.breadcrumb [aria-current] { color: var(--on-dark); display: inline-block; max-width: 32ch; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; vertical-align: bottom; }
@media (max-width: 767px) { .breadcrumb [aria-current] { max-width: 18ch; } }
.hero-panel { background: var(--navy-800); border: 1px solid var(--navy-700); border-radius: var(--r-xl); padding: 28px; display: grid; gap: 18px; }
.hero-panel__label { font-family: var(--font-mono); font-size: 11px; letter-spacing: .12em; color: var(--cyan-400); text-transform: uppercase; }
.hero-panel__foot { font-family: var(--font-mono); font-size: 11.5px; color: var(--on-dark-3); padding-top: 14px; border-top: 1px solid var(--navy-700); }
.hero-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.hero-pills span { font-family: var(--font-mono); font-size: 12px; padding: 7px 11px; border-radius: var(--r-sm); background: var(--navy-900); border: 1px solid var(--navy-600); color: var(--on-dark); }
@media (max-width: 1023px) { .page-hero__grid, .page-hero__grid--solo { grid-template-columns: 1fr; gap: 40px; align-items: start; } }
@media (max-width: 767px) {
  .page-hero { padding: calc(var(--header-h) + 32px) 0 56px; }
  .page-hero__ctas .btn { flex: 1 1 100%; }
  .hero-panel { padding: 20px; }
}

/* Generic grids & cards */
.grid { display: grid; gap: 24px; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 1023px) { .grid--3, .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 767px) { .grid { gap: 16px; } .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; } }
.card {
  position: relative; display: flex; flex-direction: column; gap: 12px; min-width: 0;
  padding: 32px; background: var(--white); border: 1px solid var(--line); border-radius: var(--r-lg);
  transition: border-color var(--t-fast) var(--ease), transform var(--t-med) var(--ease), box-shadow var(--t-med) var(--ease);
}
.card--link:hover { border-color: var(--line-strong); transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.card h3 { font-size: 20px; line-height: 1.3; font-weight: 600; letter-spacing: -.01em; }
.card h3 a::after { content: ""; position: absolute; inset: 0; }
.card > p { font-size: 15px; color: var(--ink-500); line-height: 1.6; }
.card__num { font-family: var(--font-mono); font-size: 12px; color: var(--blue-600); letter-spacing: .06em; }
.card__en { font-family: var(--font-mono); font-size: 12px; color: var(--ink-400); margin-top: -6px; }
.card__flow { font-family: var(--font-mono); font-size: 12px; color: var(--ink-700); background: var(--surface); border-radius: var(--r-xs); padding: 8px 10px; line-height: 1.6; overflow-wrap: anywhere; }
.card__list { display: grid; gap: 6px; font-size: 14.5px; color: var(--ink-700); }
.card__list li { display: flex; gap: 10px; align-items: baseline; }
.card__list li::before { content: ""; flex: none; width: 5px; height: 5px; border-radius: 1px; background: var(--blue-600); transform: translateY(-2px); }
.card__foot { margin-top: auto; padding-top: 8px; display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.card__foot .mono { font-size: 12px; color: var(--ink-400); }
.card--dark { background: var(--navy-900); border-color: var(--navy-900); color: var(--on-dark-2); }
.card--dark h3 { color: var(--white); }
.card--dark > p { color: var(--on-dark-2); }
.card--dark .card__num, .card--dark .link-arrow { color: var(--cyan-400); }
.card--dark .card__flow { background: var(--navy-800); color: var(--on-dark); }
.card--dark .card__list { color: var(--on-dark); }
.card--dark .card__list li::before { background: var(--cyan-400); }
.card--muted { background: var(--surface); }
.section--surface .card--muted { background: var(--white); }
.section--dark .card { background: var(--navy-800); border-color: var(--navy-700); }
.section--dark .card > p { color: var(--on-dark-2); }
.section--dark .card .card__num { color: var(--cyan-400); }
@media (max-width: 767px) { .card { padding: 22px; } }

/* Capability list (bordered grid) */
.caps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 40px; border-top: 1px solid var(--ink-900); }
.caps--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cap { padding: 22px 0; border-bottom: 1px solid var(--line); display: grid; gap: 4px; align-content: start; }
.cap b { color: var(--ink-900); font-size: 16.5px; font-weight: 600; }
.cap span { font-size: 14.5px; color: var(--ink-500); line-height: 1.55; }
.section--dark .caps { border-top-color: var(--navy-600); }
.section--dark .cap { border-bottom-color: var(--navy-700); }
.section--dark .cap b { color: var(--white); }
.section--dark .cap span { color: var(--on-dark-2); }
@media (max-width: 1023px) { .caps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 767px) { .caps, .caps--2 { grid-template-columns: 1fr; } }

/* Split layout */
.split { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 64px; align-items: start; }
.split--even { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.split__aside { position: sticky; top: calc(var(--header-h) + 32px); display: grid; gap: 18px; justify-items: start; }
.split__aside > p { color: var(--ink-500); }
.section--dark .split__aside > p { color: var(--on-dark-2); }
@media (max-width: 1023px) { .split, .split--even { grid-template-columns: 1fr; gap: 40px; } .split__aside { position: static; } }

.checks--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 32px; }
@media (max-width: 767px) { .checks--2 { grid-template-columns: 1fr; } }
.section--dark .checks li, .card--dark .checks li { color: var(--on-dark); }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }

/* FAQ */
.faq { border-top: 1px solid var(--ink-900); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 22px 0; font-size: 17px; font-weight: 600; color: var(--ink-900); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; flex: none; font-family: var(--font-mono); font-size: 20px; font-weight: 400; color: var(--blue-600); }
.faq details[open] summary::after { content: "−"; }
.faq summary:hover { color: var(--blue-600); }
.faq__a { padding: 0 0 24px; color: var(--ink-500); max-width: 72ch; }

/* CTA band */
.cta-band {
  position: relative; overflow: hidden;
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 32px; align-items: center;
  padding: 64px; border-radius: var(--r-xl); color: var(--on-dark-2);
  background: radial-gradient(60% 120% at 100% 0%, rgb(36 87 245 / .3), transparent 60%), var(--navy-900);
}
.cta-band h2 { color: var(--white); font-size: clamp(26px, 2.8vw, 38px); line-height: 1.15; letter-spacing: -.025em; margin-bottom: 12px; }
.cta-band p { max-width: 56ch; }
.cta-band__actions { display: flex; flex-wrap: wrap; gap: 12px; }
@media (max-width: 1023px) { .cta-band { grid-template-columns: 1fr; padding: 48px; } }
@media (max-width: 767px) { .cta-band { padding: 32px 22px; border-radius: var(--r-lg); } .cta-band__actions .btn { flex: 1 1 100%; } }

/* Filters */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 32px; }
.filter { height: 38px; padding-inline: 16px; border: 1px solid var(--line-strong); border-radius: var(--r-pill); background: var(--white); font-size: 14px; color: var(--ink-700); transition: all var(--t-fast) var(--ease); }
.filter:hover { border-color: var(--ink-500); }
.filter[aria-pressed="true"] { background: var(--ink-900); border-color: var(--ink-900); color: var(--white); }
.filter-empty { padding: 48px; text-align: center; border: 1px dashed var(--line-strong); border-radius: var(--r-lg); color: var(--ink-500); }

/* Facts row */
.facts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin: 0; border: 1px solid var(--line); border-radius: var(--r-lg); background: var(--white); }
.facts > div { padding: 20px 24px; border-left: 1px solid var(--line); display: grid; gap: 4px; align-content: start; }
.facts > div:first-child { border-left: 0; }
.facts dt { font-family: var(--font-mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-400); }
.facts dd { margin: 0; font-size: 15px; font-weight: 600; color: var(--ink-900); }
@media (max-width: 767px) {
  .facts { grid-template-columns: 1fr 1fr; }
  .facts > div:nth-child(3) { border-left: 0; }
  .facts > div:nth-child(n+3) { border-top: 1px solid var(--line); }
}

/* Prose (articles, legal) */
.prose { max-width: 72ch; font-size: 17px; line-height: 1.75; color: var(--ink-700); }
.prose > * + * { margin-top: 18px; }
.prose h2 { font-size: clamp(24px, 2.2vw, 30px); line-height: 1.25; letter-spacing: -.02em; margin-top: 52px; scroll-margin-top: calc(var(--header-h) + 24px); }
.prose h3 { font-size: 20px; line-height: 1.35; margin-top: 36px; }
.prose ul, .prose ol { padding-left: 22px; }
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li + li { margin-top: 8px; }
.prose li::marker { color: var(--blue-600); }
.prose a { color: var(--blue-600); text-decoration: underline; text-underline-offset: 3px; }
.prose strong { color: var(--ink-900); }
.prose blockquote { margin-inline: 0; padding: 18px 22px; border-left: 3px solid var(--blue-600); background: var(--blue-50); color: var(--ink-900); border-radius: 0 var(--r-sm) var(--r-sm) 0; }
.prose code { font-family: var(--font-mono); font-size: .88em; background: var(--surface); border: 1px solid var(--line); padding: 1px 6px; border-radius: 4px; }
.prose table { width: 100%; border-collapse: collapse; font-size: 15px; }
.prose th, .prose td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
.prose th { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-400); font-weight: 500; }
.prose .flow { margin-block: 28px; padding-left: 0; list-style: none; }
.prose .flow li + li { margin-top: 0; }
.table-wrap { overflow-x: auto; }

.article { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 72px; align-items: start; }
.toc { position: sticky; top: calc(var(--header-h) + 32px); display: grid; gap: 12px; padding-left: 20px; border-left: 1px solid var(--line); font-size: 14px; }
.toc p { font-family: var(--font-mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-400); }
.toc a { color: var(--ink-500); line-height: 1.45; }
.toc a:hover { color: var(--blue-600); }
.toc .btn { margin-top: 12px; color: var(--white); }
@media (max-width: 1023px) { .article { grid-template-columns: 1fr; gap: 40px; } .toc { position: static; order: -1; border-left: 0; padding: 20px; background: var(--surface); border-radius: var(--r-md); } }

/* Dev notice — remove before go-live */
.dev-note { display: flex; gap: 10px; align-items: flex-start; font-size: 13.5px; line-height: 1.5; background: #FFF8E6; border: 1px dashed #E5C46B; color: #6B4E00; padding: 12px 16px; border-radius: var(--r-sm); }
.dev-note::before { content: "!"; flex: none; display: grid; place-items: center; width: 18px; height: 18px; border-radius: 50%; background: #E5A00D; color: #fff; font-size: 12px; font-weight: 700; }

/* Misc */
.section--tight { padding-block: calc(var(--section-y) * .6); }
.section-foot { margin-top: 32px; display: flex; justify-content: flex-end; gap: 16px; flex-wrap: wrap; }
.nav__link.is-current { color: var(--white); box-shadow: inset 0 -2px 0 var(--cyan-400); border-radius: 0; }
.notfound-code { font-family: var(--font-mono); font-size: clamp(64px, 10vw, 128px); line-height: 1; color: var(--blue-500); letter-spacing: -.04em; }
.values { border-top: 1px solid var(--ink-900); }
.value { display: grid; grid-template-columns: 56px 1fr; gap: 6px 20px; padding: 28px 0; border-bottom: 1px solid var(--line); }
.value .mono { font-size: 12px; color: var(--blue-600); padding-top: 4px; grid-row: span 2; }
.value h3 { font-size: 20px; font-weight: 600; }
.value p { color: var(--ink-500); max-width: 60ch; }
.office { display: grid; gap: 6px; }
.office .mono { font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--blue-600); }
.office b { color: var(--ink-900); font-size: 17px; }
.office p { color: var(--ink-500); }
.arch { border: 1px solid var(--line); border-radius: var(--r-xl); overflow: hidden; }
.arch .case__flow { border-left: 0; min-height: 440px; }
@media (max-width: 767px) { .arch .case__flow { min-height: 0; } }

/* Form error, link-chips, pagination, WordPress content */
.form__error { grid-column: 1 / -1; font-size: 14px; color: #B4262B; background: #FDECEC; border: 1px solid #F6C9CA; border-radius: var(--r-sm); padding: 10px 14px; }
a.filter { display: inline-flex; align-items: center; }
.pagination { margin-top: 40px; }
.pagination .nav-links { display: flex; flex-wrap: wrap; gap: 8px; }
.pagination .page-numbers { display: inline-grid; place-items: center; min-width: 40px; height: 40px; padding: 0 12px; border: 1px solid var(--line-strong); border-radius: var(--r-sm); font-size: 14px; color: var(--ink-700); }
.pagination .page-numbers.current { background: var(--ink-900); border-color: var(--ink-900); color: var(--white); }
.pagination a.page-numbers:hover { border-color: var(--ink-900); }
.prose img { max-width: 100%; height: auto; border-radius: var(--r-md); }
.prose figure { margin: 0; }
.prose figcaption, .prose .wp-caption-text { font-size: 14px; color: var(--ink-500); margin-top: 8px; }
.prose iframe { max-width: 100%; }
.post-card__thumb img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.custom-logo-link img { max-height: 36px; width: auto; }

/* ==========================================================================
   V2 — Credibility & trust components
   ========================================================================== */

/* [NEED REAL DATA] — rendered for logged-in editors only */
.need-data { display: inline-block; font-family: var(--font-mono); font-size: 10.5px; font-weight: 500; letter-spacing: .06em; padding: 2px 6px; border-radius: 3px; background: #FFE9A8; color: #6B4E00; vertical-align: middle; }
.need-block { display: grid; gap: 6px; justify-items: start; padding: 20px 24px; margin-bottom: 24px; border: 1.5px dashed #E5C46B; border-radius: var(--r-md); background: #FFF8E6; color: #6B4E00; }
.need-block b { color: #4A3600; font-size: 15px; }
.need-block p { font-size: 14px; line-height: 1.5; }

/* Process: 8 steps → 4 × 2 grid */
.process--grid { grid-template-columns: repeat(4, minmax(0, 1fr)); row-gap: 40px; padding-top: 0; }
.process--grid::before, .process--grid::after { display: none; }
.process--grid .process__step { border-top: 1px solid var(--line-strong); padding-top: 28px; }
.process--grid .process__dot { top: -12px; }
@media (max-width: 1023px) { .process--grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 767px) {
  .process--grid { grid-template-columns: 1fr; padding-left: 36px; row-gap: 0; }
  .process--grid::before, .process--grid::after { display: block; }
  .process--grid .process__step { border-top: 0; padding-top: 0; }
  .process--grid .process__dot { top: 0; }
}

/* Process: detailed table (About) */
.steps-detail { display: grid; border-top: 1px solid var(--ink-900); }
.steps-detail > li { display: grid; grid-template-columns: 48px 160px repeat(3, minmax(0, 1fr)); gap: 24px; padding: 22px 0; border-bottom: 1px solid var(--line); align-items: start; }
.steps-detail__head { font-family: var(--font-mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-400); padding: 14px 0 !important; }
.steps-detail__num { font-family: var(--font-mono); font-size: 12px; color: var(--blue-600); padding-top: 3px; }
.steps-detail h3 { font-size: 18px; font-weight: 600; }
.steps-detail p { font-size: 14.5px; color: var(--ink-700); line-height: 1.55; }
.steps-detail__out { color: var(--ink-900) !important; font-weight: 500; }
.steps-detail__label { display: none; font-family: var(--font-mono); font-size: 10.5px; font-weight: 500; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-400); margin-bottom: 2px; }
@media (max-width: 1023px) {
  .steps-detail__head { display: none !important; }
  .steps-detail > li { grid-template-columns: 40px minmax(0, 1fr); gap: 8px 16px; }
  .steps-detail > li > :not(.steps-detail__num) { grid-column: 2; }
  .steps-detail__num { grid-row: span 4; }
  .steps-detail__label { display: block; }
}

/* Engagement: 5 models */
.engage--5 { grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; }
.engage--5 .engage__card { padding: 24px; }
.engage--5 .engage__card h3 { font-size: 18px; }
@media (max-width: 1199px) { .engage--5 { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 1023px) { .engage--5 { grid-template-columns: 1fr; } }

/* Engineering beyond features */
.eng { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--ink-900); border-left: 1px solid var(--line); }
.eng__item { padding: 28px 28px 32px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); display: grid; gap: 8px; align-content: start; background: var(--white); }
.eng__num { font-family: var(--font-mono); font-size: 12px; color: var(--blue-600); }
.eng__item h3 { font-size: 19px; font-weight: 600; letter-spacing: -.01em; }
.eng__item p { font-size: 14.5px; color: var(--ink-500); line-height: 1.55; }
@media (max-width: 1023px) { .eng { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 767px) { .eng { grid-template-columns: 1fr; } .eng__item { padding: 22px; } }

/* Engineering mindset (About) */
.mindset { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 40px; border-top: 1px solid var(--ink-900); }
.mindset li { display: grid; gap: 4px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.mindset b { color: var(--ink-900); font-size: 16px; font-weight: 600; }
.mindset span { font-size: 14px; color: var(--ink-500); line-height: 1.5; }
@media (max-width: 1023px) { .mindset { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 767px) { .mindset { grid-template-columns: 1fr; } }

/* Facts stacked (About) */
.facts--stack { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.facts--stack > div:nth-child(odd) { border-left: 0; }
.facts--stack > div:nth-child(n+3) { border-top: 1px solid var(--line); }

/* Technologies: capability by layer */
.techcap { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 40px; padding: 36px 0; border-top: 1px solid var(--line); }
.techcap:first-child { border-top: 1px solid var(--ink-900); }
.techcap__head { display: grid; gap: 8px; align-content: start; }
.techcap__head .mono { font-size: 12px; color: var(--blue-600); }
.techcap__head h3 { font-size: 24px; letter-spacing: -.015em; }
.techcap__head p { color: var(--ink-500); font-size: 15px; }
.techcap__body { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; align-content: start; }
.techcap__body > .tags { grid-column: 1 / -1; }
.techcard { display: grid; gap: 8px; padding: 20px 22px; border: 1px solid var(--line); border-radius: var(--r-md); background: var(--white); align-content: start; }
.techcard h4 { margin: 0; font-family: var(--font-mono); font-size: 15px; font-weight: 500; color: var(--ink-900); }
.techcard p { font-size: 14px; color: var(--ink-700); line-height: 1.55; }
.techcard b { display: block; font-family: var(--font-mono); font-size: 10.5px; font-weight: 500; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-400); margin-bottom: 2px; }
@media (max-width: 1023px) { .techcap { grid-template-columns: 1fr; gap: 20px; } }
@media (max-width: 767px) { .techcap__body { grid-template-columns: 1fr; } }

/* Project card (listing) */
.pcard__dl { margin: 0; display: grid; gap: 12px; }
.pcard__dl dt { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-400); }
.pcard__dl dd { margin: 2px 0 0; font-size: 14.5px; color: var(--ink-700); line-height: 1.55; }

/* Case study: challenges by type */
.cs-sub { margin: 36px 0 16px; font-size: 19px; }
.cs-challenges { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.cs-challenge { display: grid; gap: 8px; padding: 20px 22px; border: 1px solid var(--line); border-radius: var(--r-md); background: var(--white); align-content: start; }
.cs-challenge .mono { font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--blue-600); }
.cs-challenge p { font-size: 14.5px; color: var(--ink-700); }
@media (max-width: 1023px) { .cs-challenges { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 767px) { .cs-challenges { grid-template-columns: 1fr; } }

/* Case study: layered architecture */
.layers { display: grid; gap: 0; }
.layers__row { position: relative; display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 24px; align-items: center; padding: 14px 0; }
.layers__row + .layers__row::before { content: ""; position: absolute; left: 99px; top: -8px; width: 1px; height: 16px; background: var(--navy-600); }
.layers__label { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--cyan-400); text-align: center; padding: 10px; border: 1px dashed var(--navy-600); border-radius: var(--r-sm); }
.layers__nodes { display: flex; flex-wrap: wrap; gap: 8px; }
.layers__node { padding: 10px 14px; border-radius: var(--r-sm); background: var(--navy-800); border: 1px solid var(--navy-600); color: var(--white); font-size: 14px; }
@media (max-width: 767px) {
  .layers__row { grid-template-columns: 1fr; gap: 8px; }
  .layers__row + .layers__row::before { left: 50%; }
}

/* Social proof (real data only) */
.proof-logos { display: flex; flex-wrap: wrap; gap: 16px 40px; align-items: center; padding: 24px 0; margin-bottom: 24px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.proof-logos img { height: 36px; width: auto; filter: grayscale(1); opacity: .8; }
.proof-logos li { font-weight: 600; color: var(--ink-500); }
.proof-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin: 0 0 24px; }
.proof-stats > div { padding: 22px 24px; border: 1px solid var(--line); border-radius: var(--r-md); background: var(--white); display: grid; gap: 4px; }
.proof-stats dd { margin: 0; font-size: 32px; font-weight: 700; letter-spacing: -.03em; color: var(--ink-900); }
.proof-stats dt { font-size: 14.5px; color: var(--ink-700); }
.proof-stats small { font-family: var(--font-mono); font-size: 11px; color: var(--ink-400); }
.quote { margin: 0; }
.quote blockquote { margin: 0; font-size: 17px; line-height: 1.6; color: var(--ink-900); }
.quote figcaption { display: grid; gap: 2px; margin-top: auto; padding-top: 16px; border-top: 1px solid var(--line); }
.quote figcaption span { font-size: 13.5px; color: var(--ink-500); }

/* ==========================================================================
   Quick-contact dock — call · Zalo · Facebook
   ≥1200px: floating column bottom-right. <1200px: fixed bottom bar; the body
   reserves its height so nothing is covered. Hidden while typing in a form.
   ========================================================================== */
.cdock { position: fixed; z-index: 45; display: flex; gap: 10px; }
.cdock__btn { position: relative; flex: none; display: grid; place-items: center; width: 52px; height: 52px; border-radius: 50%; color: #fff; box-shadow: 0 10px 24px -10px rgb(11 19 36 / .55); transition: transform var(--t-fast) var(--ease); }
.cdock__btn svg { width: 24px; height: 24px; }
.cdock__btn--call { background: var(--success); }
.cdock__btn--zalo { background: #0068FF; }
.cdock__btn--zalo svg { width: 30px; height: 30px; }
.cdock__btn--fb { background: #1877F2; }
.cdock__btn:hover { transform: translateY(-2px); }
.cdock__btn--call::after { content: ""; position: absolute; inset: 0; border-radius: inherit; border: 2px solid var(--success); animation: cdockRing 2.4s ease-out infinite; }
@keyframes cdockRing { 0% { transform: scale(1); opacity: .7; } 100% { transform: scale(1.45); opacity: 0; } }
.cdock__label { position: absolute; right: calc(100% + 10px); top: 50%; transform: translateY(-50%); white-space: nowrap; padding: 6px 10px; border-radius: var(--r-sm); background: var(--ink-900); color: #fff; font-size: 13px; font-weight: 600; opacity: 0; pointer-events: none; transition: opacity var(--t-fast) var(--ease); }
.cdock__btn:hover .cdock__label, .cdock__btn:focus-visible .cdock__label { opacity: 1; }

@media (min-width: 1200px) {
  .cdock { right: 20px; bottom: 24px; flex-direction: column; }
  .cdock__cta { display: none; }
}
@media (max-width: 1199px) {
  :root { --cdock-h: 68px; }
  body.dtc, body.has-cdock { padding-bottom: calc(var(--cdock-h) + env(safe-area-inset-bottom)); }
  .cdock { left: 0; right: 0; bottom: 0; align-items: center; padding: 10px var(--gutter) calc(10px + env(safe-area-inset-bottom)); background: rgb(10 20 40 / .97); border-top: 1px solid var(--navy-700); transition: transform var(--t-med) var(--ease); }
  .cdock__cta { flex: 1; height: 48px; }
  .cdock__btn { width: 48px; height: 48px; border-radius: var(--r-sm); box-shadow: none; }
  .cdock__btn svg { width: 22px; height: 22px; }
  .cdock__btn--zalo svg { width: 28px; height: 28px; }
  .cdock__btn--call::after { display: none; }
  .cdock__label { display: none; }
  body.is-typing .cdock, body.drawer-open .cdock { transform: translateY(110%); }
  .site-footer { padding-bottom: 32px; }
}
@media (prefers-reduced-motion: reduce) { .cdock__btn--call::after { display: none; } }