/* ═══════════════════════════════════════════════════════════════
   HODO 官網設計系統
   規格：HODO_Website_Spec_Claude.md §11（色彩）§13（動畫）§16（RWD）

   關鍵字：Intelligent / Precise / Premium / Technical / Calm / Enterprise
   避免：AI 大腦、卡通機器人、過度紫色漸層、過度 Glow、大量文字
   ═══════════════════════════════════════════════════════════════ */

/* ── Design Tokens ─────────────────────────────────────────────── */
:root {
  --bg:           #05070A;
  --surface:      #0B1016;
  --surface-2:    #111820;
  --text:         #F5F7FA;
  --text-2:       #C9D1DB;
  --muted:        #8B98A8;
  --dim:          #7A8696;   /* 對 --bg / --surface 皆 ≥ 4.5:1 */
  --accent:       #7CE7D5;   /* Cyan Mint */
  --accent-2:     #7AA7FF;   /* Electric Blue */
  --brand:        #1D4685;   /* CI 品牌藍 */
  --warn:         #F2C97D;
  --danger:       #FF8A8A;
  --on-accent:    #04211C;
  --border:       rgba(255, 255, 255, .10);
  --border-strong:rgba(255, 255, 255, .18);

  --radius:       16px;
  --radius-lg:    24px;
  --container:    1200px;
  --gutter:       24px;
  --nav-h:        72px;

  --font-sans: "Inter", "Noto Sans TC", system-ui, -apple-system, "PingFang TC", "Microsoft JhengHei", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
  --ease: cubic-bezier(.2, .7, .2, 1);

  color-scheme: dark;
}

/* ── Base ──────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
h1, h2, h3, h4 { font-weight: 700; line-height: 1.25; text-wrap: balance; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; }
b, strong { font-weight: 600; }
[id] { scroll-margin-top: calc(var(--nav-h) + 16px); }

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

.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; left: 16px; top: -80px; z-index: 200;
  padding: 10px 16px; border-radius: 8px;
  background: var(--accent); color: var(--on-accent); font-weight: 600;
}
.skip-link:focus { top: 12px; }

.mono { font-family: var(--font-mono); }
.text-accent {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.br-md, .br-lg { display: none; }
@media (min-width: 768px)  { .br-md { display: inline; } }
@media (min-width: 1100px) { .br-lg { display: inline; } }

.icon { width: 20px; height: 20px; flex-shrink: 0; }

/* ── Layout ────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section { position: relative; padding-block: clamp(80px, 10vw, 128px); }
/* 首頁首屏以下的區塊延後渲染：首頁 DOM 約 1,250 個元素，首幀全部排版在 4× CPU 節流下要 300–600ms（TBT）。
   contain-intrinsic-size 的 auto 會記住實際高度，捲回來不會跳動。
   ⚠️ 只用在首頁：被略過的區塊只有估計高度，會讓 /workos#governed-agent 這類錨點跳錯位置。 */
.page-home main > .section { content-visibility: auto; contain-intrinsic-size: auto 960px; }
.section--tight { padding-block: clamp(56px, 7vw, 88px); }
.section--flush-top { padding-top: 0; }
.section--alt {
  background: linear-gradient(180deg, var(--surface), rgba(11, 16, 22, .35));
  border-block: 1px solid rgba(255, 255, 255, .05);
}

.section-head { max-width: 780px; margin-bottom: clamp(40px, 5vw, 64px); }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head--center .eyebrow { justify-content: center; }
.section-title {
  margin: 0;
  font-size: clamp(28px, 2.6vw + 1rem, 48px);
  line-height: 1.2;
  letter-spacing: -.015em;
}
.section-lead {
  text-wrap: pretty;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: clamp(16px, .4vw + .9rem, 18px);
  line-height: 1.85;
}
.section-lead b { color: var(--text); }
.section-more { margin: 32px 0 0; }

.eyebrow {
  display: flex; align-items: center; gap: 10px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px; font-weight: 500;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent);
}
.eyebrow::before { content: ""; width: 20px; height: 1px; background: currentColor; opacity: .6; }

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(40px, 6vw, 80px);
  align-items: center;
}
.split--rev > :first-child { order: 2; }
.split-text .section-lead { margin-bottom: 28px; }

/* ── Buttons & Links ───────────────────────────────────────────── */
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 22px;
  border-radius: 999px; border: 1px solid transparent;
  font-size: 15px; font-weight: 600; line-height: 1;
  cursor: pointer;
  transition: background .2s, border-color .2s, box-shadow .2s, color .2s;
}
.btn .icon { width: 18px; height: 18px; transition: transform .2s var(--ease); }
.btn:hover .icon { transform: translateX(3px); }
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: #A2F2E5; box-shadow: 0 10px 30px -10px rgba(124, 231, 213, .55); }
.btn-ghost { border-color: var(--border-strong); background: rgba(255, 255, 255, .02); color: var(--text); }
.btn-ghost:hover { border-color: rgba(255, 255, 255, .36); background: rgba(255, 255, 255, .06); }
.btn-sm { min-height: 44px; padding: 0 18px; font-size: 14px; }

.link-arrow {
  display: inline-flex; align-items: center; gap: 6px;
  min-height: 44px;
  color: var(--accent); font-size: 15px; font-weight: 500;
}
.link-arrow .icon { width: 16px; height: 16px; transition: transform .2s var(--ease); }
a.link-arrow:hover .icon, a:hover > .link-arrow .icon { transform: translateX(3px); }

/* ── Badges / Tags / Chips ─────────────────────────────────────── */
.status {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 4px 10px;
  border: 1px solid; border-radius: 999px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .03em; line-height: 1.4;
  white-space: nowrap;
}
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.status--field      { color: var(--accent);   border-color: rgba(124, 231, 213, .35); background: rgba(124, 231, 213, .08); }
.status--building   { color: var(--accent-2); border-color: rgba(122, 167, 255, .35); background: rgba(122, 167, 255, .08); }
.status--developing { color: var(--warn);     border-color: rgba(242, 201, 125, .32); background: rgba(242, 201, 125, .07); }
.status--research   { color: var(--muted);    border-color: rgba(139, 152, 168, .32); background: rgba(139, 152, 168, .07); }
.status--field .status-dot { animation: pulse 2.4s ease-in-out infinite; }

.status-legend {
  display: flex; flex-wrap: wrap; gap: 12px 28px;
  margin: 32px 0 0; padding: 18px 22px;
  border: 1px dashed var(--border); border-radius: 14px;
}
.status-legend div { display: flex; align-items: center; gap: 10px; }
.status-legend dt, .status-legend dd { margin: 0; }
.status-legend dd { font-size: 13px; color: var(--muted); }
.status-legend--hero { margin-top: 36px; max-width: max-content; }

.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.tag {
  padding: 5px 12px;
  border: 1px solid var(--border); border-radius: 8px;
  background: rgba(255, 255, 255, .03);
  font-size: 13px; line-height: 1.5; color: var(--text-2);
}
.tag.mono { font-size: 12px; }
.tag--accent { border-color: rgba(124, 231, 213, .28); background: rgba(124, 231, 213, .06); color: var(--text); }
.chip {
  padding: 6px 12px;
  border: 1px solid var(--border); border-radius: 8px;
  background: rgba(255, 255, 255, .03);
  font-size: 12px; color: var(--muted);
}

/* 箭頭串（Action → Capability → …） */
.chain { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 0; margin: 0; padding: 0; list-style: none; font-size: 13px; }
.chain li {
  position: relative;
  display: flex; align-items: center;
  padding: 6px 12px;
  border: 1px solid rgba(124, 231, 213, .28); border-radius: 8px;
  background: rgba(124, 231, 213, .06);
}
/* 箭頭放在兩個 pill 之間（絕對定位在框外），換行時也不會斷在框裡 */
.chain li + li { margin-left: 26px; }
.chain li + li::before {
  content: "→"; position: absolute; left: -20px;
  color: var(--accent);
}
.chain + .icon-list, .chain + .key-line { margin-top: 28px; }
.chain--dim li { border-color: var(--border); background: rgba(255, 255, 255, .02); color: var(--muted); }
.chain--dim li + li::before { color: var(--dim); }

.key-line {
  margin: 28px 0 0; padding-left: 16px;
  border-left: 2px solid var(--accent);
  font-size: 17px; font-weight: 500; line-height: 1.7;
}

.icon-list { display: grid; gap: 16px; margin: 0; padding: 0; list-style: none; }
.icon-list li { display: flex; gap: 14px; align-items: flex-start; }
.icon-list .icon {
  width: 40px; height: 40px; padding: 9px;
  border: 1px solid var(--border); border-radius: 10px;
  color: var(--accent); background: var(--surface);
}
.icon-list span { color: var(--muted); font-size: 15px; line-height: 1.6; }
.icon-list b { display: block; color: var(--text); font-size: 15px; }

.check-list { display: grid; gap: 12px; margin: 28px 0 0; padding: 0; list-style: none; }
.check-list li { display: flex; gap: 12px; align-items: flex-start; color: var(--text-2); }
.check-list .icon { color: var(--accent); margin-top: 3px; }

/* ═══ Navigation ═════════════════════════════════════════════════ */
.site-nav {
  position: fixed; inset: 0 0 auto; z-index: 100;
  height: var(--nav-h);
  border-bottom: 1px solid transparent;
  transition: background .3s, border-color .3s, backdrop-filter .3s;
}
.site-nav.is-scrolled, .site-nav.is-open {
  background: rgba(5, 7, 10, .82);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  backdrop-filter: saturate(140%) blur(14px);
  border-bottom-color: var(--border);
}
.nav-inner { height: 100%; display: flex; align-items: center; gap: 24px; }
.nav-logo { display: flex; align-items: center; min-height: 44px; margin-right: auto; flex-shrink: 0; }
.nav-logo img { height: 40px; width: auto; }
.nav-menu { display: flex; gap: 2px; }
.nav-link {
  position: relative;
  padding: 10px 14px; border-radius: 8px;
  color: var(--muted); font-size: 15px; font-weight: 500;
  transition: color .2s, background .2s;
}
.nav-link:hover { color: var(--text); background: rgba(255, 255, 255, .05); }
.nav-link[aria-current="page"] { color: var(--text); }
.nav-link[aria-current="page"]::after {
  content: ""; position: absolute; left: 50%; bottom: 2px;
  width: 4px; height: 4px; margin-left: -2px; border-radius: 50%;
  background: var(--accent);
}
.nav-right { display: flex; align-items: center; gap: 8px; }

.nav-toggle {
  display: none;
  width: 44px; height: 44px; padding: 0;
  border: 1px solid var(--border); border-radius: 10px;
  background: transparent; cursor: pointer;
  flex-direction: column; align-items: center; justify-content: center; gap: 6px;
}
.nav-toggle-bar { width: 18px; height: 1.5px; background: var(--text); transition: transform .3s var(--ease); }
.site-nav.is-open .nav-toggle-bar:first-child { transform: translateY(3.75px) rotate(45deg); }
.site-nav.is-open .nav-toggle-bar:last-child  { transform: translateY(-3.75px) rotate(-45deg); }

.mobile-menu {
  display: none;
  position: absolute; top: var(--nav-h); left: 0; right: 0;
  max-height: calc(100dvh - var(--nav-h)); overflow-y: auto;
  background: rgba(5, 7, 10, .97);
  border-bottom: 1px solid var(--border);
}
.site-nav.is-open .mobile-menu { display: block; }
.mobile-menu-inner { display: flex; flex-direction: column; padding-block: 12px 24px; }
.mobile-link {
  display: flex; align-items: center; min-height: 52px;
  border-bottom: 1px solid rgba(255, 255, 255, .06);
  font-size: 17px; color: var(--text-2);
}
.mobile-link[aria-current="page"] { color: var(--accent); }
.mobile-cta { margin-top: 20px; }

@media (max-width: 960px) {
  .nav-menu, .nav-cta { display: none; }
  .nav-toggle { display: inline-flex; }
}

/* ═══ Hero ═══════════════════════════════════════════════════════ */
.hero {
  position: relative; isolation: isolate;
  min-height: min(100svh, 940px);
  display: flex; align-items: center;
  padding: calc(var(--nav-h) + 48px) 0 72px;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(55% 55% at 78% 45%, rgba(29, 70, 133, .42), transparent 70%),
    radial-gradient(35% 35% at 88% 28%, rgba(124, 231, 213, .08), transparent 70%);
}
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 70% 65% at 65% 40%, #000 25%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 65% at 65% 40%, #000 25%, transparent 75%);
}
.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
  gap: clamp(32px, 4vw, 64px);
  align-items: center;
}
/* 「AI 不只是回答問題，」約 9.5em 寬；字級上限要讓它在左欄一行放得下，避免「題，」單獨換行 */
.hero-title {
  margin: 0;
  font-size: clamp(34px, 3.3vw + 1rem, 64px);
  line-height: 1.12;
  letter-spacing: -.02em;
}
.hero-en { margin: 20px 0 0; font-size: 15px; color: var(--accent); letter-spacing: .02em; }
.hero-lead {
  margin: 20px 0 36px;
  max-width: 560px;
  font-size: clamp(16px, .5vw + .9rem, 19px);
  line-height: 1.85;
  color: var(--text-2);
}

/* Hero 工作閉環 */
.loop { position: relative; width: min(100%, 520px); aspect-ratio: 1; margin-inline: auto; }
.loop-ring { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.loop-orbit { fill: none; stroke: rgba(255, 255, 255, .06); stroke-dasharray: 2 7; }
.loop-track { fill: none; stroke: rgba(255, 255, 255, .12); stroke-width: 1; }
.loop-progress {
  fill: none; stroke: url(#loopGrad); stroke-width: 2.5; stroke-linecap: round;
  stroke-dasharray: 600; stroke-dashoffset: 600;
  transform: rotate(-90deg); transform-origin: 200px 200px;
  transition: stroke-dashoffset 1s var(--ease);
}
.loop-progress.no-anim { transition: none; }
.loop-nodes { position: absolute; inset: 0; margin: 0; padding: 0; list-style: none; }
.loop-node {
  --a: calc(var(--i) * 60deg - 90deg);
  position: absolute;
  left: calc(50% + 38% * cos(var(--a)));
  top:  calc(50% + 38% * sin(var(--a)));
  transform: translate(-50%, -50%);
  display: flex; align-items: center; gap: 6px;
  padding: 7px 13px;
  border: 1px solid var(--border-strong); border-radius: 999px;
  background: var(--surface);
  font-size: 13px; font-weight: 500; line-height: 1.2; white-space: nowrap;
  color: var(--muted);
  transition: color .4s, background .4s, border-color .4s, box-shadow .4s;
}
.loop-node-num { font-size: 10px; color: var(--dim); transition: color .4s; }
.loop-node.is-done { color: var(--text); border-color: rgba(124, 231, 213, .35); }
.loop-node.is-active {
  color: var(--on-accent); background: var(--accent); border-color: var(--accent);
  box-shadow: 0 0 0 6px rgba(124, 231, 213, .12);
}
.loop-node.is-active .loop-node-num { color: rgba(4, 33, 28, .65); }
.loop-core {
  position: absolute; inset: 27%;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  border: 1px solid var(--border); border-radius: 50%;
  background: radial-gradient(circle at 50% 35%, rgba(29, 70, 133, .35), rgba(11, 16, 22, .9) 70%);
  text-align: center;
}
.loop-core img { width: clamp(28px, 8%, 44px); height: auto; margin-bottom: 10px; opacity: .95; }
.loop-core-name { margin: 0; font-size: clamp(18px, 1.4vw + .6rem, 24px); font-weight: 600; letter-spacing: -.01em; }
.loop-core-desc { margin: 2px 0 0; max-width: 80%; font-size: 13px; line-height: 1.5; color: var(--muted); }
.loop-core-name, .loop-core-desc { transition: opacity .3s, transform .3s var(--ease); }
.loop-core.is-swapping .loop-core-name,
.loop-core.is-swapping .loop-core-desc { opacity: 0; transform: translateY(4px); }

/* ═══ What HODO does ════════════════════════════════════════════ */
.wwd { border-top: 1px solid rgba(255, 255, 255, .05); }
.statement {
  max-width: 1040px; margin: 0 0 48px;
  font-size: clamp(22px, 1.8vw + .8rem, 36px);
  font-weight: 500; line-height: 1.6; letter-spacing: -.005em;
  color: var(--text-2);
}
.statement strong { color: var(--text); font-weight: 700; }
.statement em {
  font-style: normal; color: var(--text);
  background: linear-gradient(transparent 64%, rgba(124, 231, 213, .22) 64%);
}
.wwd-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin: 0; padding: 0; list-style: none; }
.wwd-list li {
  position: relative; display: flex; flex-direction: column; gap: 4px;
  padding-top: 20px; border-top: 1px solid var(--border);
}
.wwd-list li::before { content: ""; position: absolute; top: -1px; left: 0; width: 32px; height: 1px; background: var(--accent); }
.wwd-list span { font-size: 12px; color: var(--accent); }
.wwd-list b { font-size: 18px; }
.wwd-list small { font-size: 12px; color: var(--muted); }

/* ═══ 01 The Gap ════════════════════════════════════════════════ */
.silo-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 0 0 32px; padding: 0; list-style: none; }
.silo-list li {
  display: grid; grid-template-columns: auto 1fr; column-gap: 12px; align-items: center;
  padding: 16px 18px;
  border: 1px dashed rgba(255, 255, 255, .16); border-radius: 12px;
}
.silo-list .icon { grid-row: span 2; width: 22px; height: 22px; color: var(--muted); }
.silo-list b { font-size: 15px; }
.silo-list span { font-size: 11px; color: var(--dim); }

.gap-grid { display: grid; grid-template-columns: minmax(0, 1fr) 96px minmax(0, 1fr); align-items: stretch; }
.gap-panel {
  display: flex; flex-direction: column; align-items: center;
  padding: 32px; text-align: center;
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  background: var(--surface);
}
.gap-after {
  border-color: rgba(124, 231, 213, .25);
  background: radial-gradient(90% 60% at 50% 0%, rgba(29, 70, 133, .35), transparent 70%), var(--surface);
}
.gap-label { align-self: flex-start; margin: 0 0 24px; font-size: 11px; letter-spacing: .14em; color: var(--dim); }
.gap-after .gap-label { color: var(--accent); }
.gap-sources { display: grid; grid-template-columns: repeat(3, auto); gap: 8px; justify-content: center; }
.gap-arrow { position: relative; width: 1px; height: 30px; margin: 6px 0 10px; background: var(--border-strong); }
.gap-arrow::after {
  content: ""; position: absolute; left: -3.5px; bottom: -6px;
  border: 4px solid transparent; border-top: 5px solid rgba(255, 255, 255, .3);
}
.gap-node {
  padding: 10px 22px;
  border: 1px solid var(--border-strong); border-radius: 10px;
  font-size: 13px; letter-spacing: .12em;
}
.gap-unknown { border-style: dashed; color: var(--warn); border-color: rgba(242, 201, 125, .4); animation: flicker 3s ease-in-out infinite; }
.gap-human { display: inline-flex; align-items: center; gap: 8px; color: #FFB3B3; border-color: rgba(255, 138, 138, .4); }
.gap-human .icon { width: 16px; height: 16px; }
.gap-caption { margin: 24px 0 0; max-width: 320px; font-size: 14px; line-height: 1.75; color: var(--muted); }

.gap-mid { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; }
.gap-mid-line { width: 1px; flex: 0 1 120px; background: linear-gradient(transparent, var(--accent), transparent); }
.gap-mid-badge {
  padding: 6px 10px;
  border: 1px solid rgba(124, 231, 213, .4); border-radius: 999px;
  background: rgba(124, 231, 213, .06);
  font-size: 11px; letter-spacing: .12em; color: var(--accent);
}

.gap-chain { display: flex; flex-direction: column; width: 100%; max-width: 320px; margin: 0; padding: 0; list-style: none; }
.gap-chain li {
  position: relative;
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  margin-bottom: 14px; padding: 10px 16px;
  border: 1px solid var(--border); border-radius: 10px;
  background: rgba(255, 255, 255, .02);
  font-size: 14px;
}
.gap-chain li:last-child { margin-bottom: 0; }
.gap-chain li:not(:last-child)::after {
  content: ""; position: absolute; left: 50%; bottom: -15px;
  width: 1px; height: 14px; background: rgba(124, 231, 213, .35);
}
.gap-chain small { font-size: 12px; color: var(--muted); }
.gap-after.is-in .gap-chain li { animation: chainLight 1.2s var(--ease) both; animation-delay: calc(var(--i) * .18s + .3s); }

/* ═══ 02 Positioning ════════════════════════════════════════════ */
.pos-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 24px; align-items: stretch; }
.not-list { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.not-item {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 20px 22px;
  border: 1px solid var(--border); border-radius: 14px;
  background: rgba(255, 255, 255, .015);
}
.not-x {
  display: grid; place-items: center; flex-shrink: 0;
  width: 32px; height: 32px;
  border: 1px solid rgba(255, 138, 138, .3); border-radius: 50%;
  color: #FF9C9C;
}
.not-x .icon { width: 14px; height: 14px; }
.not-item b {
  font-size: 17px;
  text-decoration: line-through; text-decoration-color: rgba(255, 138, 138, .65); text-decoration-thickness: 1.5px;
}
.not-item p { margin: 4px 0 0; font-size: 14px; color: var(--muted); }
.is-card {
  position: relative; overflow: hidden;
  display: flex; flex-direction: column; justify-content: center;
  padding: clamp(28px, 4vw, 48px);
  border: 1px solid rgba(124, 231, 213, .28); border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 80% at 100% 0%, rgba(29, 70, 133, .5), transparent 60%),
    linear-gradient(180deg, #0E151D, #0A0F15);
}
.is-kicker { margin: 0; font-size: 12px; letter-spacing: .14em; color: var(--accent); }
.is-title { margin: 8px 0 4px; font-size: clamp(34px, 2.8vw + 1rem, 54px); letter-spacing: -.02em; }
.is-en { margin: 0 0 28px; font-size: 18px; color: var(--muted); }
.is-chain { display: flex; flex-wrap: wrap; gap: 8px 0; margin: 0 0 20px; padding: 0; list-style: none; font-size: 13px; }
.is-chain li { display: flex; align-items: center; }
.is-chain li:not(:last-child)::after { content: "→"; margin: 0 10px; color: var(--accent); }
.is-desc { margin: 0; font-size: 16px; color: var(--text-2); }

/* ═══ 03 Capabilities ═══════════════════════════════════════════ */
.cap-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.cap-card {
  display: flex; flex-direction: column;
  padding: 28px;
  border: 1px solid var(--border); border-radius: 20px;
  background: linear-gradient(180deg, rgba(17, 24, 32, .92), rgba(11, 16, 22, .92));
  transition: border-color .3s, transform .3s var(--ease);
}
.cap-card:hover { border-color: rgba(124, 231, 213, .3); transform: translateY(-2px); }
.cap-demo {
  display: flex; flex-wrap: wrap; align-items: center; align-content: center; gap: 6px 4px;
  min-height: 64px; margin-bottom: 24px; padding: 12px;
  border: 1px solid rgba(255, 255, 255, .06); border-radius: 12px;
  background: rgba(5, 7, 10, .6);
}
.cap-demo-item { display: inline-flex; align-items: center; gap: 4px; white-space: nowrap; }
.cap-demo-node {
  padding: 4px 7px;
  border: 1px solid var(--border); border-radius: 6px;
  font-size: 11px; color: var(--muted);
  animation: demoPulse 4.8s ease-in-out infinite;
  animation-delay: calc(var(--i) * .6s);
}
.cap-demo-node.is-target { color: var(--accent); border-color: rgba(124, 231, 213, .45); }
.cap-demo-sep { font-size: 11px; color: var(--dim); }
.cap-q { margin: 0 0 6px; font-size: 14px; color: var(--accent); }
.cap-title { margin: 0 0 20px; font-size: 24px; letter-spacing: -.01em; }
.cap-title span { display: block; margin-top: 4px; font-size: 14px; font-weight: 500; color: var(--muted); }
.cap-dl { display: grid; gap: 14px; margin: 0 0 24px; }
.cap-dl div { display: grid; grid-template-columns: 52px 1fr; gap: 12px; }
.cap-dl dt { padding-top: 3px; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--dim); }
.cap-dl dd { margin: 0; font-size: 14px; line-height: 1.7; color: var(--text-2); }
.cap-key { margin: auto 0 0; padding-top: 20px; border-top: 1px solid var(--border); font-size: 15px; font-weight: 500; line-height: 1.65; }

/* ═══ 04 Architecture（視覺核心）═════════════════════════════════ */
.section--arch {
  background: radial-gradient(60% 45% at 50% 45%, rgba(29, 70, 133, .25), transparent 70%), var(--bg);
  border-block: 1px solid rgba(255, 255, 255, .05);
}
.arch { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 28px; align-items: start; }
.arch-diagram {
  position: relative;
  padding: 28px;
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  background-color: rgba(8, 12, 17, .75);
  background-image: radial-gradient(rgba(255, 255, 255, .07) 1px, transparent 1px);
  background-size: 20px 20px;
}
.arch-inputs { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.arch-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 10px;
  border: 1px solid var(--border); border-radius: 8px;
  background: var(--surface);
  font-size: 12px; color: var(--muted);
}
.arch-chip .icon { width: 14px; height: 14px; color: var(--accent); }

.arch-merge, .arch-link, .arch-split {
  position: relative; display: block;
  width: 1px; margin-inline: auto;
  background: linear-gradient(rgba(124, 231, 213, .55), rgba(122, 167, 255, .35));
}
.arch-merge { height: 30px; }
.arch-link  { height: 18px; }
.arch-split { height: 26px; }
.flow-dot {
  position: absolute; left: -2px; top: 0;
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 8px var(--accent);
  animation: flowDown 1.8s linear infinite;
  animation-delay: var(--d, 0s);
}

.arch-body { position: relative; padding-left: 44px; }
.arch-loop {
  position: absolute; left: 6px; top: 34px; bottom: 34px; width: 30px;
  border: 1px dashed rgba(124, 231, 213, .4); border-right: 0;
  border-radius: 14px 0 0 14px;
}
.arch-loop::after {
  content: ""; position: absolute; top: -5px; right: -4px;
  border: 4.5px solid transparent; border-left: 6px solid rgba(124, 231, 213, .8);
}
.arch-loop-dot {
  position: absolute; left: -3px;
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 8px var(--accent);
  animation: flowUp 3.6s linear infinite;
}
.arch-loop-label {
  position: absolute; left: 0; top: 50%;
  padding: 3px 8px;
  background: #080C11;
  font-size: 10px; letter-spacing: .1em; color: var(--accent); white-space: nowrap;
  transform: translate(-50%, -50%) rotate(-90deg);
}
.arch-stack { display: flex; flex-direction: column; }
.arch-layer {
  position: relative;
  display: flex; align-items: center; gap: 14px;
  width: 100%; min-height: 64px; padding: 12px 18px;
  border: 1px solid var(--border); border-radius: 14px;
  background: rgba(17, 24, 32, .9);
  color: inherit; text-align: left; cursor: pointer;
  transition: border-color .25s, background .25s, box-shadow .25s;
}
.arch-layer:hover { border-color: var(--border-strong); background: rgba(22, 31, 41, .95); }
.arch-layer[aria-selected="true"] {
  border-color: rgba(124, 231, 213, .6);
  background: linear-gradient(90deg, rgba(124, 231, 213, .12), rgba(122, 167, 255, .06)), rgba(17, 24, 32, .95);
  box-shadow: 0 0 0 4px rgba(124, 231, 213, .06), 0 14px 40px -14px rgba(124, 231, 213, .3);
}
.arch-layer-idx { width: 24px; font-size: 11px; color: var(--dim); }
.arch-layer[aria-selected="true"] .arch-layer-idx { color: var(--accent); }
.arch-layer-text { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.arch-layer-name { font-size: 16px; font-weight: 600; }
.arch-layer-meta { font-size: 11px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.arch-outputs { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.arch-out {
  display: flex; flex-direction: column; gap: 4px;
  padding: 14px 16px;
  border: 1px solid rgba(122, 167, 255, .28); border-radius: 12px;
  background: rgba(122, 167, 255, .06);
}
.arch-out-title { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; }
.arch-out-title .icon { width: 16px; height: 16px; color: var(--accent-2); }
.arch-out .mono { font-size: 11px; color: var(--muted); }
.arch-rail {
  margin: 20px 0 0; padding-top: 14px;
  border-top: 1px dashed var(--border);
  text-align: center; font-size: 11px; letter-spacing: .08em; color: var(--dim);
}

.arch-panels {
  position: sticky; top: calc(var(--nav-h) + 24px);
  min-height: 440px; padding: 32px 32px 40px;
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(17, 24, 32, .95), rgba(11, 16, 22, .95));
  overflow: hidden;
}
.arch-panel[hidden] { display: none; }
.arch-panel { animation: panelIn .45s var(--ease); }
.arch-panel:focus-visible { outline-offset: 8px; }
.arch-panel-idx { margin: 0 0 16px; font-size: 11px; letter-spacing: .12em; color: var(--accent); }
.arch-panel-title { margin: 0; font-size: clamp(24px, 1.2vw + 1rem, 30px); letter-spacing: -.01em; }
.arch-panel-zh { margin: 4px 0 20px; color: var(--muted); }
.arch-panel-q { margin: 0 0 12px; font-size: 18px; font-weight: 500; }
.arch-panel-summary { margin: 0 0 24px; color: var(--text-2); line-height: 1.85; }
.arch-panel .tag-list { margin-bottom: 24px; }
.arch-progress {
  position: absolute; left: 32px; right: 32px; bottom: 20px;
  height: 2px; border-radius: 2px; overflow: hidden;
  background: rgba(255, 255, 255, .06);
}
.arch-progress span { display: block; width: 0; height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); }
.arch.is-auto .arch-progress span { animation: fillBar var(--arch-dur, 5s) linear forwards; }
.arch:not(.is-auto) .arch-progress { opacity: 0; }

/* ═══ 05 How HODO Works ═════════════════════════════════════════ */
.how { display: grid; grid-template-columns: 320px minmax(0, 1fr); gap: 56px; align-items: start; }
.how-aside { position: sticky; top: calc(var(--nav-h) + 32px); }
.how-scenario { padding: 24px; border: 1px solid var(--border); border-radius: 18px; background: var(--surface); }
.how-scenario-kicker { margin: 0 0 10px; font-size: 11px; letter-spacing: .12em; color: var(--accent); }
.how-scenario-title { margin: 0 0 8px; font-size: 22px; font-weight: 700; }
.how-scenario-note { margin: 0 0 20px; font-size: 13px; color: var(--muted); }
.how-meter { display: grid; grid-template-columns: repeat(6, 1fr); gap: 4px; }
.how-meter-seg { height: 4px; border-radius: 2px; background: rgba(255, 255, 255, .08); transition: background .4s; }
.how-meter-seg.is-lit { background: var(--accent); }
.how-meter-label { margin: 10px 0 0; font-size: 12px; color: var(--muted); }

.how-steps { position: relative; margin: 0; padding: 0; list-style: none; }
.how-steps::before {
  content: ""; position: absolute; left: 23.5px; top: 24px; bottom: 24px;
  width: 1px; background: var(--border);
}
.how-steps::after {
  content: ""; position: absolute; left: 23.5px; top: 24px;
  width: 1px; height: calc((100% - 48px) * var(--p, 0));
  background: linear-gradient(var(--accent), var(--accent-2));
  transition: height .5s var(--ease);
}
.how-step {
  position: relative;
  display: grid; grid-template-columns: 48px minmax(0, 1fr); gap: 24px;
  padding-bottom: 40px;
  transition: opacity .5s;
}
.how-step:last-child { padding-bottom: 0; }
/* 未點亮的步驟只降低強調，不用 opacity —— 文字仍需符合 WCAG 對比 */
.js .how-step:not(.is-lit) .how-title,
.js .how-step:not(.is-lit) .how-desc { color: var(--muted); }
.js .how-step:not(.is-lit) .how-title .icon { color: var(--muted); }
.js .how-step:not(.is-lit) .how-case { border-color: var(--border); background: transparent; color: var(--muted); }
.js .how-step:not(.is-lit) .how-case .mono { color: var(--muted); }
.how-title, .how-desc, .how-case { transition: color .4s, border-color .4s, background .4s; }
.how-num {
  position: relative; z-index: 1;
  display: grid; place-items: center;
  width: 48px; height: 48px;
  border: 1px solid var(--border-strong); border-radius: 50%;
  background: var(--bg);
  font-size: 13px; color: var(--muted);
  transition: border-color .4s, color .4s, background .4s, box-shadow .4s;
}
.how-step.is-lit .how-num { border-color: var(--accent); color: var(--accent); box-shadow: 0 0 0 6px rgba(124, 231, 213, .08); }
.how-step.is-current .how-num { background: var(--accent); color: var(--on-accent); }
.how-title { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin: 10px 0 8px; font-size: 22px; }
.how-title .icon { width: 22px; height: 22px; color: var(--accent); }
.how-title span { font-size: 15px; font-weight: 500; color: var(--muted); }
.how-desc { margin: 0 0 14px; color: var(--text-2); line-height: 1.8; }
.how-case {
  display: flex; gap: 12px;
  margin: 0; padding: 12px 16px;
  border: 1px solid rgba(124, 231, 213, .18); border-radius: 10px;
  background: rgba(124, 231, 213, .04);
  font-size: 14px; line-height: 1.7;
}
.how-case .mono { flex-shrink: 0; padding-top: 2px; font-size: 11px; color: var(--accent); }

/* ═══ 06 Work Intelligence ══════════════════════════════════════ */
.wi-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 48px; align-items: center; }
.wi-flow {
  display: flex; flex-direction: column; align-items: center;
  padding: 32px;
  border: 1px solid var(--border); border-radius: 20px;
  background: rgba(5, 7, 10, .55);
}
.wi-inputs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; width: 100%; }
.wi-in {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  padding: 14px 6px;
  border: 1px solid var(--border); border-radius: 12px;
  background: var(--surface); text-align: center;
}
.wi-in .icon { color: var(--accent); }
.wi-in .mono { font-size: 11px; line-height: 1.3; color: var(--muted); }
.wi-join {
  position: relative;
  width: 75%; height: 22px; margin-bottom: 26px;
  border: 1px solid var(--border-strong); border-top: 0;
  border-radius: 0 0 14px 14px;
}
.wi-join::after { content: ""; position: absolute; left: 50%; top: 100%; width: 1px; height: 26px; background: var(--border-strong); }
.wi-node {
  padding: 12px 24px;
  border: 1px solid var(--border-strong); border-radius: 12px;
  background: var(--surface-2);
  font-size: 14px;
}
.wi-node--out { border-color: var(--accent); background: var(--accent); color: var(--on-accent); font-weight: 600; }
.wi-arrow { position: relative; width: 1px; height: 30px; margin-bottom: 6px; background: var(--border-strong); }
.wi-arrow::after {
  content: ""; position: absolute; left: -3.5px; bottom: -6px;
  border: 4px solid transparent; border-top: 5px solid rgba(255, 255, 255, .3);
}
.wi-compare { display: grid; gap: 16px; }
.quote-card {
  margin: 0; padding: 24px 28px;
  border: 1px solid rgba(124, 231, 213, .3); border-radius: 16px;
  background: linear-gradient(180deg, rgba(124, 231, 213, .07), rgba(124, 231, 213, .02));
}
.quote-card--dim { border-color: var(--border); background: rgba(255, 255, 255, .02); }
.quote-card figcaption { margin-bottom: 12px; font-size: 11px; letter-spacing: .12em; color: var(--accent); }
.quote-card--dim figcaption { color: var(--dim); }
.quote-card blockquote { margin: 0; font-size: 17px; line-height: 1.8; }
.quote-card--dim blockquote { color: var(--muted); }
.quote-note { margin: 12px 0 0; font-size: 13px; color: var(--muted); }

/* ═══ 07 Governed Agent ═════════════════════════════════════════ */
.gov { display: grid; gap: 24px; }
.gov-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.gov-actions-label { margin: 0 8px 0 0; font-size: 12px; letter-spacing: .06em; color: var(--muted); }
.gov-action {
  min-height: 44px; padding: 0 16px;
  border: 1px solid var(--border-strong); border-radius: 999px;
  background: rgba(255, 255, 255, .03);
  font-size: 14px; color: var(--text-2); cursor: pointer;
  transition: background .2s, color .2s, border-color .2s;
}
.gov-action:hover { border-color: rgba(255, 255, 255, .36); }
.gov-action[aria-pressed="true"] { background: var(--text); border-color: var(--text); color: var(--bg); }

.gov-tier--low      { --c: #7CE7D5; }
.gov-tier--medium   { --c: #7AA7FF; }
.gov-tier--high     { --c: #F2C97D; }
.gov-tier--critical { --c: #FF8A8A; }
.gov-tiers { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.gov-tier {
  display: flex; flex-direction: column;
  padding: 24px 20px;
  border: 1px solid var(--border); border-top: 2px solid var(--c); border-radius: 16px;
  background: var(--surface);
  transition: opacity .35s, border-color .35s, background .35s, transform .35s var(--ease);
}
.gov-level { margin: 0; font-size: 12px; letter-spacing: .12em; color: var(--c); }
.gov-down { margin: 10px 0; color: var(--dim); }
.gov-down .icon { width: 18px; height: 18px; }
.gov-gate { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 0 0 12px; }
.gov-gate .icon { color: var(--c); }
.gov-gate b { font-size: 18px; }
.gov-gate span { font-size: 13px; color: var(--muted); }
.gov-desc { margin: 0 0 16px; font-size: 14px; line-height: 1.7; color: var(--text-2); }
.gov-examples { display: flex; flex-wrap: wrap; gap: 6px; margin: auto 0 0; padding: 0; list-style: none; }
.gov-examples li { padding: 4px 10px; border-radius: 6px; background: rgba(255, 255, 255, .05); font-size: 12px; color: var(--muted); }
.gov[data-active="low"] .gov-tier--low,
.gov[data-active="medium"] .gov-tier--medium,
.gov[data-active="high"] .gov-tier--high,
.gov[data-active="critical"] .gov-tier--critical {
  opacity: 1;
  border-color: var(--c);
  background: color-mix(in srgb, var(--c) 8%, var(--surface));
  transform: translateY(-4px);
}
.gov-result { padding: 18px 22px; border: 1px solid var(--border); border-radius: 14px; background: rgba(5, 7, 10, .6); }
.gov-result-text { margin: 0 0 10px; font-size: 15px; }
.gov-audit { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 0; font-size: 12px; color: var(--muted); word-break: break-all; }
.gov-audit-tag { padding: 2px 6px; border-radius: 4px; background: rgba(255, 255, 255, .08); font-size: 10px; color: var(--text); }

/* ═══ 08 Physical + Digital ═════════════════════════════════════ */
.pd-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(40px, 6vw, 72px); align-items: center; }
.pd-grid .section-head { margin-bottom: 0; }
.pd {
  display: flex; flex-direction: column; align-items: center;
  padding: 32px;
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  background: rgba(5, 7, 10, .55);
}
.pd-top {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 22px;
  border: 1px solid rgba(124, 231, 213, .45); border-radius: 14px;
  background: linear-gradient(90deg, rgba(124, 231, 213, .1), rgba(122, 167, 255, .08));
}
.pd-top img { width: 26px; height: auto; }
.pd-top b { display: block; font-size: 17px; }
.pd-top small { font-size: 11px; color: var(--muted); }
.pd-layer { position: relative; width: 100%; padding-top: 44px; }
.pd-layer::before { content: ""; position: absolute; top: 0; left: 50%; width: 1px; height: 22px; background: var(--border-strong); }
.pd-label { position: absolute; top: 2px; left: 0; font-size: 10px; letter-spacing: .14em; color: var(--dim); }
.pd-row { position: relative; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin: 0; padding: 0; list-style: none; }
.pd-row::before { content: ""; position: absolute; top: -22px; left: 12.5%; right: 12.5%; height: 1px; background: var(--border-strong); }
.pd-node {
  position: relative;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  padding: 16px 6px;
  border: 1px solid var(--border); border-radius: 12px;
  background: var(--surface); text-align: center;
}
.pd-node::before { content: ""; position: absolute; bottom: 100%; left: 50%; width: 1px; height: 22px; background: var(--border-strong); }
.pd-node .icon { width: 24px; height: 24px; color: var(--accent-2); }
.pd-node .mono { font-size: 12px; line-height: 1.3; color: var(--text-2); }
.pd-layer--physical .pd-node { border-color: rgba(124, 231, 213, .25); }
.pd-layer--physical .pd-node .icon { color: var(--accent); }

/* ═══ 09 Solutions ══════════════════════════════════════════════ */
.sol-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.sol-card {
  display: flex; flex-direction: column;
  padding: 28px;
  border: 1px solid var(--border); border-radius: 20px;
  background: linear-gradient(180deg, rgba(17, 24, 32, .92), rgba(11, 16, 22, .92));
  transition: border-color .3s, transform .3s var(--ease);
}
.sol-card:hover { border-color: rgba(124, 231, 213, .35); transform: translateY(-3px); }
.sol-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 24px; }
.sol-phase { font-size: 12px; letter-spacing: .1em; color: var(--muted); }
.sol-icon {
  display: grid; place-items: center;
  width: 52px; height: 52px; margin-bottom: 20px;
  border: 1px solid rgba(124, 231, 213, .22); border-radius: 14px;
  background: rgba(124, 231, 213, .08); color: var(--accent);
}
.sol-top .sol-icon { margin-bottom: 0; }
.sol-icon .icon { width: 26px; height: 26px; }
.sol-title { margin: 0 0 8px; font-size: 26px; }
.sol-title span { margin-left: 8px; font-size: 15px; font-weight: 500; color: var(--muted); }
.sol-tagline { margin: 0 0 20px; line-height: 1.75; color: var(--text-2); }
.sol-card .tag-list { margin-bottom: 24px; }
.sol-card .link-arrow { margin-top: auto; }

/* ═══ 10 Technology ═════════════════════════════════════════════ */
.diff-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.diff-card {
  display: flex; flex-direction: column;
  padding: 24px;
  border: 1px solid var(--border); border-radius: 18px;
  background: var(--surface);
}
.diff-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
/* 大字裝飾編號：仍需 ≥ 3:1（WCAG 大字） */
.diff-no { font-size: 28px; font-weight: 500; line-height: 1; color: rgba(255, 255, 255, .42); }
.diff-title { margin: 0; font-size: 19px; letter-spacing: -.005em; }
.diff-zh { margin: 4px 0 20px; font-size: 14px; color: var(--muted); }
.diff-vs { display: grid; gap: 8px; margin-top: auto; }
.diff-row {
  display: grid; grid-template-columns: 72px minmax(0, 1fr); gap: 8px;
  margin: 0; padding: 10px 12px;
  border-radius: 10px;
  font-size: 13px; line-height: 1.6;
}
.diff-row .mono { padding-top: 2px; font-size: 11px; }
.diff-row--typical { background: rgba(255, 255, 255, .03); color: var(--muted); }
.diff-row--typical .mono { color: var(--dim); }
.diff-row--hodo { border: 1px solid rgba(124, 231, 213, .2); background: rgba(124, 231, 213, .06); }
.diff-row--hodo .mono { color: var(--accent); }

/* ═══ 11 Comparison ═════════════════════════════════════════════ */
/* position: relative 讓表格內 .sr-only（absolute）以捲動容器為定位基準，否則會撐出頁面寬度 */
.cmp-wrap { position: relative; overflow-x: auto; border: 1px solid var(--border); border-radius: 18px; background: var(--surface); }
.cmp { width: 100%; min-width: 640px; border-collapse: collapse; }
.cmp th, .cmp td { padding: 14px 20px; border-bottom: 1px solid rgba(255, 255, 255, .06); text-align: center; font-size: 15px; }
.cmp thead th { background: rgba(255, 255, 255, .02); font-size: 13px; font-weight: 600; color: var(--muted); }
.cmp th[scope="row"] { position: sticky; left: 0; z-index: 1; background: var(--surface); text-align: left; font-weight: 500; }
.cmp thead th:first-child { text-align: left; }
.cmp tbody tr:last-child > * { border-bottom: 0; }
.cmp .cmp-hodo { background: rgba(124, 231, 213, .06); }
.cmp thead .cmp-hodo { color: var(--accent); }
.cmp-mark { font-family: var(--font-mono); font-size: 16px; }
.cmp-yes { color: var(--accent); }
.cmp-partial { color: var(--muted); }
.cmp-no { color: var(--dim); }
.cmp-hint { display: none; margin: 0 0 10px; font-size: 12px; color: var(--muted); }
@media (max-width: 700px) { .cmp-hint { display: block; } }
.cmp-legend { display: flex; flex-wrap: wrap; gap: 8px 20px; margin: 16px 0 0; font-size: 12px; color: var(--muted); }

/* ═══ 12 Progress ═══════════════════════════════════════════════ */
.prog-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.prog-card {
  display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 4px 16px; align-items: start;
  padding: 22px;
  border: 1px solid var(--border); border-radius: 16px;
  background: var(--surface);
}
.prog-icon {
  grid-row: span 2;
  display: grid; place-items: center;
  width: 44px; height: 44px;
  border: 1px solid var(--border); border-radius: 12px;
  color: var(--accent);
}
.prog-title { margin: 0 0 4px; font-size: 17px; }
.prog-desc { margin: 0; font-size: 14px; line-height: 1.7; color: var(--muted); }
.prog-card .status { grid-column: 2; justify-self: start; margin-top: 12px; }

/* ═══ Closing / CTA ═════════════════════════════════════════════ */
.closing { padding-block: clamp(80px, 12vw, 160px); text-align: center; overflow: hidden; }
.closing-lines {
  display: flex; flex-direction: column; gap: .08em;
  margin: 0;
  font-size: clamp(36px, 6vw, 88px); font-weight: 700; line-height: 1.08; letter-spacing: -.03em;
}
.closing-lines span:first-child { color: rgba(245, 247, 250, .55); }
.closing-lines span:nth-child(2) { color: rgba(245, 247, 250, .8); }

.cta-section { padding-top: clamp(24px, 4vw, 48px); }
.cta-card {
  position: relative; overflow: hidden;
  padding: clamp(36px, 6vw, 72px);
  border: 1px solid rgba(124, 231, 213, .25); border-radius: 28px;
  background:
    radial-gradient(80% 120% at 100% 0%, rgba(29, 70, 133, .6), transparent 60%),
    radial-gradient(60% 80% at 0% 100%, rgba(124, 231, 213, .1), transparent 60%),
    #0A0F15;
}
.cta-grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: linear-gradient(90deg, transparent 20%, #000 80%);
  mask-image: linear-gradient(90deg, transparent 20%, #000 80%);
}
.cta-card > :not(.cta-grid) { position: relative; }
.cta-title { margin: 0 0 16px; font-size: clamp(28px, 2.4vw + 1rem, 44px); letter-spacing: -.015em; }
.cta-lead { max-width: 640px; margin: 0 0 32px; line-height: 1.85; color: var(--text-2); }

/* ═══ Footer ════════════════════════════════════════════════════ */
.site-footer { padding: 64px 0 32px; border-top: 1px solid var(--border); background: #040609; }
.footer-top { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 2fr); gap: 48px; }
.footer-brand img { width: auto; height: 50px; margin-bottom: 20px; }
.footer-company { margin: 0 0 4px; font-weight: 500; }
.footer-product { margin: 0 0 20px; font-size: 12px; color: var(--muted); }
.footer-tagline { margin: 0; font-size: 15px; line-height: 1.75; color: var(--text-2); }
.footer-cols { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; }
.footer-h { margin: 0 0 12px; font-size: 13px; font-weight: 600; letter-spacing: .02em; }
.footer-col ul { margin: 0; padding: 0; list-style: none; }
.footer-col a { display: inline-flex; align-items: center; min-height: 36px; font-size: 14px; color: var(--muted); transition: color .2s; }
.footer-col a:hover { color: var(--text); }
.footer-bottom {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px;
  margin-top: 48px; padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 12px; color: var(--dim);
}
.footer-note { max-width: 640px; }

/* ═══ Sub pages ═════════════════════════════════════════════════ */
.page-hero {
  position: relative; isolation: isolate; overflow: hidden;
  padding: calc(var(--nav-h) + clamp(56px, 8vw, 112px)) 0 clamp(56px, 7vw, 96px);
}
.page-hero--compact { padding-bottom: clamp(40px, 5vw, 64px); }
.page-hero--center { min-height: 70vh; display: flex; align-items: center; text-align: center; }
.page-hero--center .eyebrow, .page-hero--center .btn-row { justify-content: center; }
.page-hero--center .page-lead { margin-inline: auto; }
.page-title { margin: 0; font-size: clamp(36px, 3.6vw + 1rem, 64px); line-height: 1.12; letter-spacing: -.02em; }
.page-lead { text-wrap: pretty; max-width: 760px; margin: 24px 0 0; font-size: clamp(16px, .5vw + .9rem, 19px); line-height: 1.85; color: var(--text-2); }
.page-hero .btn-row { margin-top: 36px; }

.flow-strip { display: flex; flex-wrap: wrap; gap: 8px 0; margin: 32px 0 0; padding: 0; list-style: none; font-size: 13px; }
.flow-strip li { display: flex; align-items: center; color: var(--text-2); }
.flow-strip li:not(:last-child)::after { content: "→"; margin: 0 12px; color: var(--accent); }

/* 資料結構示意卡 */
.spec-card, .loop-card {
  border: 1px solid var(--border); border-radius: 20px;
  background: rgba(5, 7, 10, .6);
  overflow: hidden;
}
.spec-head {
  display: flex; justify-content: space-between; gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, .03);
  font-size: 11px; letter-spacing: .1em; color: var(--accent);
}
.spec-head span:last-child { color: var(--dim); }
.spec-rows { margin: 0; padding: 8px 0; }
.spec-rows div {
  display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 16px;
  padding: 12px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, .04);
}
.spec-rows div:last-child { border-bottom: 0; }
.spec-rows dt { padding-top: 2px; font-size: 12px; color: var(--muted); }
.spec-rows dd { margin: 0; font-size: 15px; }
.spec-pill {
  display: inline-block; margin-right: 6px; padding: 1px 8px;
  border: 1px solid rgba(122, 167, 255, .35); border-radius: 6px;
  background: rgba(122, 167, 255, .1);
  font-family: var(--font-mono); font-size: 11px; color: var(--accent-2);
}
.spec-pill--low { border-color: rgba(124, 231, 213, .35); background: rgba(124, 231, 213, .1); color: var(--accent); }

.from-to { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); gap: 16px; align-items: center; }
.from-to-label { margin: 0 0 10px; font-size: 11px; letter-spacing: .12em; color: var(--dim); }
.from-to-arrow { color: var(--accent); }

.triad { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin: 0; padding: 0; list-style: none; counter-reset: none; }
.triad-item { padding: 24px; border: 1px solid var(--border); border-radius: 16px; background: var(--surface); }
.triad-item h3 { margin: 12px 0 8px; font-size: 20px; }
.triad-item p { margin: 0; font-size: 14px; line-height: 1.7; color: var(--muted); }
.triad-no { font-size: 12px; color: var(--accent); }
.triad-item--out { border-color: rgba(124, 231, 213, .4); background: linear-gradient(180deg, rgba(124, 231, 213, .1), rgba(124, 231, 213, .03)); }

.control-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin: 0 0 32px; padding: 0; list-style: none; }
.control-item { padding: 20px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); }
.control-name { margin: 0 0 8px; font-size: 13px; color: var(--accent); }
.control-desc { margin: 0; font-size: 14px; line-height: 1.7; color: var(--text-2); }
.control-item--key { display: flex; align-items: center; border-color: rgba(124, 231, 213, .35); background: rgba(124, 231, 213, .06); }
.control-item--key .control-desc { font-size: 15px; font-weight: 500; color: var(--text); }

.ladder { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.ladder-step {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
  padding: 16px 18px;
  border: 1px solid var(--border); border-left: 2px solid var(--c); border-radius: 12px;
  background: rgba(5, 7, 10, .5);
}
.ladder-step .gov-level { font-size: 11px; }
.ladder-arrow { color: var(--dim); }
.ladder-arrow .icon { width: 14px; height: 14px; }
.ladder-gate { display: flex; align-items: center; gap: 6px; font-size: 15px; }
.ladder-gate .icon { width: 18px; height: 18px; color: var(--c); }

.module-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin: 0; padding: 0; list-style: none; }
.module {
  display: flex; align-items: center; gap: 10px;
  min-height: 56px; padding: 12px 16px;
  border: 1px solid var(--border); border-radius: 12px;
  background: var(--surface);
  font-size: 13px;
}
.module::before { content: ""; width: 6px; height: 6px; border-radius: 2px; background: var(--accent); flex-shrink: 0; }

.product-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.product-card {
  display: flex; flex-direction: column;
  padding: 28px;
  border: 1px solid var(--border); border-radius: 20px;
  background: linear-gradient(180deg, rgba(17, 24, 32, .92), rgba(11, 16, 22, .92));
}
.product-title { margin: 0; font-size: 22px; }
.product-zh { margin: 4px 0 16px; font-size: 14px; color: var(--muted); }
.product-summary { margin: 0 0 20px; line-height: 1.75; color: var(--text-2); }
.product-card .tag-list { margin-bottom: 24px; }
.product-value { margin: auto 0 0; padding-top: 18px; border-top: 1px solid var(--border); font-weight: 500; }

/* Solutions page */
.roadmap { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 40px 0 0; padding: 0; list-style: none; }
.roadmap-item a {
  display: flex; flex-direction: column; align-items: flex-start; gap: 10px;
  height: 100%; padding: 20px;
  border: 1px solid var(--border); border-radius: 16px;
  background: rgba(11, 16, 22, .7);
  transition: border-color .25s;
}
.roadmap-item a:hover { border-color: rgba(124, 231, 213, .4); }
.roadmap-phase { font-size: 11px; letter-spacing: .12em; color: var(--dim); }
.roadmap-name { display: flex; align-items: center; gap: 8px; font-size: 20px; font-weight: 600; }
.roadmap-name .icon { color: var(--accent); }
.roadmap-name small { font-size: 14px; font-weight: 400; color: var(--muted); }

.stackup { display: flex; flex-direction: column; gap: 10px; }
.stackup-fields { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.stackup-field { padding: 20px; border: 1px dashed rgba(255, 255, 255, .18); border-radius: 14px; }
.stackup-field-name { display: flex; align-items: center; gap: 8px; margin: 0 0 12px; font-size: 17px; font-weight: 600; }
.stackup-field-name .icon { color: var(--accent); }
.stackup-field ul { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.stackup-field li { display: grid; grid-template-columns: 80px minmax(0, 1fr); gap: 8px; font-size: 14px; color: var(--text-2); }
.stackup-field li .mono { padding-top: 2px; font-size: 11px; color: var(--dim); }
.stackup-label { margin: 0; font-size: 11px; letter-spacing: .1em; text-align: center; color: var(--dim); }
.stackup-core {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px;
  padding: 20px 24px;
  border: 1px solid rgba(124, 231, 213, .4); border-radius: 16px;
  background: linear-gradient(90deg, rgba(124, 231, 213, .1), rgba(29, 70, 133, .3));
}
.stackup-core b { font-size: 18px; }
.stackup-core-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 0 auto; padding: 0; list-style: none; font-size: 12px; }
.stackup-core-list li { padding: 4px 10px; border-radius: 6px; background: rgba(5, 7, 10, .5); color: var(--text-2); }

.title-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; }
.sub-label { margin: 24px 0 10px; font-size: 11px; letter-spacing: .12em; color: var(--dim); }
.split-text .sub-label:first-of-type { margin-top: 0; }

.loop-card-steps { margin: 0; padding: 20px; list-style: none; display: grid; gap: 0; }
.loop-card-steps li {
  position: relative;
  display: grid; grid-template-columns: 88px minmax(0, 1fr); gap: 16px;
  padding: 14px 0;
}
.loop-card-steps li:not(:last-child)::after {
  content: ""; position: absolute; left: 36px; bottom: -6px;
  width: 1px; height: 12px; background: rgba(124, 231, 213, .35);
}
.loop-card-steps .mono {
  align-self: start;
  padding: 4px 0; border: 1px solid rgba(124, 231, 213, .3); border-radius: 6px;
  background: rgba(124, 231, 213, .06);
  font-size: 11px; text-align: center; color: var(--accent);
}
.loop-card-steps p { margin: 0; line-height: 1.7; }

/* Technology page */
.tech-list { display: grid; gap: 16px; margin: 0; padding: 0; list-style: none; }
.tech-item {
  padding: clamp(24px, 3vw, 36px);
  border: 1px solid var(--border); border-radius: 20px;
  background: var(--surface);
}
.tech-head { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 20px; align-items: center; }
.tech-no { font-size: 36px; font-weight: 500; line-height: 1; color: rgba(255, 255, 255, .42); }
.tech-title { margin: 0; font-size: clamp(20px, 1vw + 1rem, 26px); }
.tech-zh { margin: 2px 0 0; color: var(--muted); }
.tech-detail { max-width: 760px; margin: 20px 0 24px; line-height: 1.85; color: var(--text-2); }
.tech-vs { display: grid; gap: 12px; }
.tech-vs-row { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 16px; align-items: center; }
.tech-vs-label { font-size: 11px; letter-spacing: .08em; color: var(--accent); }
.tech-vs-row--typical .tech-vs-label { color: var(--dim); }

.promise-list { display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; }
.promise-list li {
  display: flex; gap: 14px; align-items: flex-start;
  padding: 16px 18px;
  border: 1px solid var(--border); border-radius: 12px;
  background: var(--surface);
  line-height: 1.7;
}
.promise-list .icon { margin-top: 3px; color: var(--accent); }
.promise-list--not .icon { color: #FF9C9C; }

/* Company page */
.brand-mark {
  display: grid; place-items: center;
  aspect-ratio: 1;
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  background:
    radial-gradient(60% 60% at 50% 45%, rgba(29, 70, 133, .55), transparent 70%),
    var(--surface);
}
.brand-mark img { width: 42%; height: auto; }
.hdo-list { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.hdo-list li { display: flex; gap: 16px; align-items: center; }
.hdo-letter {
  display: grid; place-items: center; flex-shrink: 0;
  width: 44px; height: 44px;
  border: 1px solid rgba(124, 231, 213, .35); border-radius: 12px;
  font-family: var(--font-mono); font-size: 18px; color: var(--accent);
}
.hdo-list span:last-child { color: var(--muted); }
.hdo-list b { display: block; color: var(--text); }
.scope-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 20px; }
.scope-card { padding: 28px; border: 1px solid rgba(124, 231, 213, .25); border-radius: 20px; background: rgba(124, 231, 213, .03); }
.scope-card--not { border-color: var(--border); background: transparent; }
.scope-label { margin: 0 0 16px; font-size: 12px; letter-spacing: .14em; color: var(--accent); }
.scope-card--not .scope-label { color: #FF9C9C; }
.principle-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; margin: 0; padding: 0; list-style: none; }
.principle { padding: 24px; border-top: 1px solid var(--accent); background: linear-gradient(180deg, rgba(124, 231, 213, .05), transparent 60%); }
.principle-no { font-size: 12px; color: var(--accent); }
.principle h3 { margin: 12px 0 8px; font-size: 19px; }
.principle p { margin: 0; font-size: 14px; line-height: 1.75; color: var(--muted); }
.info-table { margin: 0; border-top: 1px solid var(--border); }
.info-table div { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 24px; padding: 18px 0; border-bottom: 1px solid var(--border); align-items: center; }
.info-table dt { color: var(--muted); font-size: 14px; }
.info-table dd { margin: 0; }

/* Contact page */
.contact-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 32px; align-items: start; }
.contact-form {
  padding: clamp(24px, 4vw, 40px);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  background: var(--surface);
}
.form-title { margin: 0 0 6px; font-size: 24px; }
.form-hint { margin: 0 0 28px; font-size: 13px; color: var(--muted); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: 14px; font-weight: 500; color: var(--text-2); }
.field label span { color: var(--accent); }
.field input, .field select, .field textarea {
  width: 100%; min-height: 48px; padding: 12px 14px;
  border: 1px solid var(--border-strong); border-radius: 10px;
  background: rgba(5, 7, 10, .6);
  font: inherit; font-size: 15px; color: var(--text);
  transition: border-color .2s, box-shadow .2s;
}
.field textarea { resize: vertical; min-height: 128px; }
.field select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 20px) 50%, calc(100% - 15px) 50%; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 40px; }
.field select option { background: var(--surface-2); color: var(--text); }
.field select:has(option[value=""]:checked) { color: var(--dim); }
.field ::placeholder { color: var(--dim); }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(124, 231, 213, .15);
}
.field.is-invalid input, .field.is-invalid textarea { border-color: var(--danger); }
.field-error { font-size: 13px; color: var(--danger); }
.form-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin-top: 28px; }
.form-note { margin: 0; font-size: 13px; color: var(--muted); }
.form-status { margin: 16px 0 0; font-size: 14px; color: var(--accent); }
.form-status:empty { display: none; }
.contact-aside { display: grid; gap: 16px; }
.aside-card { padding: 24px; border: 1px solid var(--border); border-radius: 18px; background: rgba(5, 7, 10, .5); }
.aside-title { margin: 0 0 16px; font-size: 17px; }
.next-steps { display: grid; gap: 18px; margin: 0; padding: 0; list-style: none; }
.next-steps li { display: grid; grid-template-columns: 32px minmax(0, 1fr); gap: 12px; }
.next-steps .mono { font-size: 12px; color: var(--accent); padding-top: 3px; }
.next-steps b { display: block; margin-bottom: 2px; }
.next-steps p { margin: 0; font-size: 14px; line-height: 1.7; color: var(--muted); }
.aside-mail { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; color: var(--accent); word-break: break-all; }

/* ═══ Motion ════════════════════════════════════════════════════ */
/* 只有「一開始在首屏以下」的元素會被 JS 加上 .reveal-pending 隱藏；
   首屏內的 .reveal 永遠直接顯示，不會拖慢 LCP。 */
.reveal { transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal-pending { opacity: 0; transform: translateY(20px); }

@keyframes pulse     { 0%, 100% { box-shadow: 0 0 0 0 rgba(124, 231, 213, .5); } 50% { box-shadow: 0 0 0 4px rgba(124, 231, 213, 0); } }
@keyframes flicker   { 0%, 100% { opacity: 1; } 45% { opacity: 1; } 50% { opacity: .35; } 55% { opacity: 1; } 70% { opacity: .6; } 72% { opacity: 1; } }
@keyframes chainLight {
  0%   { border-color: var(--border); box-shadow: none; }
  40%  { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(124, 231, 213, .12); }
  100% { border-color: rgba(124, 231, 213, .35); box-shadow: none; }
}
@keyframes demoPulse { 0%, 55%, 100% { background: transparent; } 10%, 22% { background: rgba(124, 231, 213, .16); } }
@keyframes flowDown  { 0% { top: 0; opacity: 0; } 15% { opacity: 1; } 85% { opacity: 1; } 100% { top: 100%; opacity: 0; } }
@keyframes flowUp    { 0% { top: 100%; opacity: 0; } 10% { opacity: 1; } 90% { opacity: 1; } 100% { top: 0; opacity: 0; } }
@keyframes panelIn   { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes fillBar   { from { width: 0; } to { width: 100%; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal-pending { opacity: 1; transform: none; }
  .flow-dot, .arch-loop-dot { display: none; }
}

/* ═══ Responsive ════════════════════════════════════════════════ */
@media (max-width: 1180px) {
  .cap-grid, .sol-grid, .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cap-grid > :last-child:nth-child(odd),
  .sol-grid > :last-child:nth-child(odd),
  .product-grid > :last-child:nth-child(odd) { grid-column: 1 / -1; }
  .diff-grid, .prog-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .control-grid, .module-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .gov-tiers, .ladder, .triad, .principle-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 960px) {
  .hero { min-height: 0; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { max-width: 460px; width: 100%; margin-inline: auto; }
  .split, .pd-grid, .wi-grid, .pos-grid, .scope-grid, .contact-grid { grid-template-columns: 1fr; }
  .split--rev > :first-child { order: 0; }
  .arch { grid-template-columns: 1fr; }
  .arch-panels { position: relative; top: 0; min-height: 0; }
  .how { grid-template-columns: 1fr; gap: 24px; }
  .how-aside {
    top: var(--nav-h); z-index: 5;
    margin-inline: calc(var(--gutter) * -1);
    padding: 10px var(--gutter);
    background: rgba(5, 7, 10, .92);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
  }
  .how-scenario { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 4px 16px; padding: 0; border: 0; background: none; }
  .how-scenario-kicker, .how-scenario-note { display: none; }
  .how-scenario-title { margin: 0; font-size: 15px; }
  .how-meter { grid-column: 1 / -1; order: 3; }
  .how-meter-label { margin: 0; }
  .wwd-list, .silo-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gap-grid { grid-template-columns: 1fr; }
  .gap-mid { flex-direction: row; padding: 16px 0; }
  .gap-mid-line { width: auto; height: 1px; flex: 0 1 80px; background: linear-gradient(90deg, transparent, var(--accent), transparent); }
  .roadmap, .stackup-fields { grid-template-columns: 1fr; }
  .stackup-core-list { margin-left: 0; }
  .footer-top { grid-template-columns: 1fr; }
  .info-table div { grid-template-columns: 140px minmax(0, 1fr); }
}

@media (max-width: 640px) {
  :root { --gutter: 16px; --nav-h: 64px; }
  .nav-logo img { height: 34px; }
  .cap-grid, .sol-grid, .product-grid, .diff-grid, .prog-grid,
  .control-grid, .module-grid, .gov-tiers, .ladder, .triad, .principle-grid, .form-grid { grid-template-columns: 1fr; }
  .cap-grid > :last-child:nth-child(odd),
  .sol-grid > :last-child:nth-child(odd),
  .product-grid > :last-child:nth-child(odd) { grid-column: auto; }
  .hero { padding-top: calc(var(--nav-h) + 32px); }
  .btn-row .btn { flex: 1 1 100%; }
  .loop-node { padding: 5px 9px; font-size: 11.5px; gap: 4px; }
  .loop-node-num { display: none; }
  .loop-core-desc { font-size: 12px; }
  .arch-diagram { padding: 18px 14px; }
  .arch-body { padding-left: 30px; }
  .arch-loop { left: 2px; width: 22px; }
  .arch-layer { padding: 10px 12px; gap: 10px; }
  .arch-layer-name { font-size: 15px; }
  .arch-outputs { grid-template-columns: 1fr; }
  .arch-panels { padding: 24px 20px 36px; }
  .arch-progress { left: 20px; right: 20px; }
  .gap-panel { padding: 24px 18px; }
  .wi-flow { padding: 20px 14px; }
  .wi-inputs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pd { padding: 20px 14px; }
  .pd-row { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .pd-row::before { left: 25%; right: 25%; }
  .pd-node:nth-child(n+3)::before { display: none; }
  .spec-rows div { grid-template-columns: 1fr; gap: 2px; }
  .from-to { grid-template-columns: 1fr; }
  .from-to-arrow { transform: rotate(90deg); justify-self: start; }
  .tech-head { grid-template-columns: auto minmax(0, 1fr); }
  .tech-head .status { grid-column: 1 / -1; justify-self: start; }
  .tech-vs-row { grid-template-columns: 1fr; gap: 8px; }
  .diff-row { grid-template-columns: 1fr; gap: 2px; }
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-col a { min-height: 44px; }
  .info-table div { grid-template-columns: 1fr; gap: 4px; }
  .stackup-field li { grid-template-columns: 1fr; gap: 0; }
  .loop-card-steps li { grid-template-columns: 1fr; gap: 6px; }
  .loop-card-steps .mono { justify-self: start; padding: 4px 10px; }
  .loop-card-steps li:not(:last-child)::after { display: none; }
}