/* ══════════════════════════════════════════════════════════════
   MINGJIAN 明鉴 — PUBLIC MARKETING SITE
   Design direction: THE SOFTWARE IS THE HERO.

   Enterprise software brand, luxury-grade craftsmanship.
   The palette is the product's own (lacquer ink / warm paper /
   jade) so the marketing site and the software read as one system.
   Display serif: statements only. UI sans: the workhorse.
   Monospace: product labels, data, eyebrows.
   Tiebreakers: when a choice reads "decorative", choose the
   informative option; when it reads "generic SaaS", choose the
   more restrained option.
   ══════════════════════════════════════════════════════════════ */

@font-face {
  font-family: "Cormorant Garamond";
  src: url("/assets/fonts/cormorant-garamond-var.woff2") format("woff2");
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Cormorant Garamond";
  src: url("/assets/fonts/cormorant-garamond-500i.woff2") format("woff2");
  font-weight: 400 600;
  font-style: italic;
  font-display: swap;
}

:root {
  /* brand foundation — shared with the product UI */
  --ink: #191c19;
  --ink-soft: #3c403a;
  --jade: #2f6051;
  --jade-deep: #24503f;
  --bronze: #8a7350;
  --vermilion: #9e3524;        /* the seal — the only red */

  --lacquer: #14161a;          /* near-black, cool graphite  */
  --lacquer-2: #1b1e23;
  --paper: #f7f5f0;            /* refined warm white         */
  --paper-deep: #efede6;
  --card: #ffffff;
  --ivory-on-dark: #edeae2;
  --muted: #5f6259;
  --stone: #8b887d;
  --line: #ddd7c9;
  --line-dark: #2c3138;

  --serif: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --serif-cjk: "Songti SC", "STSong", "NSimSun", "SimSun", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Helvetica, Arial, "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "Segoe UI Mono", Consolas, Menlo, monospace;

  --wrap: 1160px;
  --wrap-text: 720px;

  --shadow-app: 0 1px 2px rgba(20, 22, 26, 0.06), 0 24px 60px -24px rgba(20, 22, 26, 0.28);
  --radius: 6px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; display: block; }

a { color: var(--jade); text-decoration-thickness: 1px; text-underline-offset: 4px; }
a:hover { color: var(--ink); }

::selection { background: var(--jade); color: var(--paper); }

/* ── layout ─────────────────────────────────────────────────── */
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 40px; }
.wrap-text { max-width: var(--wrap-text); margin: 0 auto; padding: 0 40px; }
@media (max-width: 720px) { .wrap, .wrap-text { padding: 0 22px; } }

section { padding: 0; }
section[id] { scroll-margin-top: 84px; }
.band { padding: 104px 0; }
.band-tight { padding: 68px 0; }
@media (max-width: 720px) { .band { padding: 68px 0; } .band-tight { padding: 48px 0; } }

/* ── typography ─────────────────────────────────────────────── */
h1, h2, h3 { font-family: var(--serif); font-weight: 500; line-height: 1.12; letter-spacing: 0.005em; }
h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
h3 { font-size: 1.3rem; line-height: 1.3; }
p { max-width: 64ch; }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--jade);
  margin-bottom: 26px;
}
.eyebrow .index { color: var(--stone); margin-right: 1.2em; }

.lead { font-size: 1.1rem; color: var(--muted); line-height: 1.75; }
.hanzi { font-family: var(--serif-cjk); }
.num { font-variant-numeric: tabular-nums; }

/* reveal-on-scroll: hidden only when JS is present (html.js) and motion
   is allowed. No-JS visitors and reduced-motion users see everything. */
@media (prefers-reduced-motion: no-preference) {
  .js .reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.7s ease, transform 0.7s ease; }
  .js .reveal.in { opacity: 1; transform: none; }
}

/* ── hairlines ──────────────────────────────────────────────── */
.rule { border: 0; border-top: 1px solid var(--line); margin: 0; }
.rule-dark { border-top-color: var(--line-dark); }

/* ── header ─────────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(247, 245, 240, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; gap: 34px; min-height: 68px; }
.brand {
  display: flex; align-items: baseline; gap: 12px;
  text-decoration: none; color: var(--ink);
  margin-right: auto; white-space: nowrap;
}
.brand .seal { width: 28px; height: 28px; border-radius: 2px; align-self: center; }
.brand .word {
  font-family: var(--sans); font-weight: 600; font-size: 0.95rem;
  letter-spacing: 0.26em;
}
.brand .hanzi { font-family: var(--serif-cjk); font-size: 1rem; color: var(--jade); }

.site-nav { display: flex; align-items: center; gap: 28px; }
.site-nav a {
  color: var(--ink); text-decoration: none;
  font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase;
  padding: 4px 0; white-space: nowrap;
  border-bottom: 1px solid transparent;
}
.site-nav a.btn { color: var(--paper); }
.site-nav a.btn:hover { color: var(--paper); }
.site-nav a:hover { color: var(--jade); }
.site-nav a[aria-current="page"] { border-bottom-color: var(--jade); color: var(--ink); }

.nav-toggle {
  display: none; background: none; cursor: pointer;
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 9px 16px;
  font: 500 0.72rem var(--sans); letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink);
}
@media (max-width: 1340px) {
  .nav-toggle { display: block; }
  .site-nav {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    background: var(--paper); border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: flex-start;
    padding: 26px 22px 30px; gap: 20px;
  }
  .site-nav.open { display: flex; }
  .site-nav .btn { white-space: normal; text-align: left; padding: 13px 20px; }
}

/* ── buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  background: var(--ink); color: var(--paper);
  font-family: var(--sans); font-weight: 500;
  font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase;
  padding: 16px 30px;
  border: 1px solid var(--ink); border-radius: var(--radius);
  text-decoration: none; cursor: pointer;
  max-width: 100%; overflow-wrap: anywhere;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}
.btn:hover { background: var(--jade-deep); border-color: var(--jade-deep); color: var(--paper); }
.btn-secondary { background: transparent; color: var(--ink); border-color: rgba(25, 28, 25, 0.35); }
.btn-secondary:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn-ivory { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.btn-ivory:hover { background: var(--ivory-on-dark); border-color: var(--ivory-on-dark); color: var(--ink); }
.lacquer a.btn-ivory { color: var(--ink); }
.lacquer a.btn-ivory:hover { color: var(--ink); }
.btn-ghost-ivory { background: transparent; color: var(--ivory-on-dark); border-color: rgba(237, 234, 226, 0.45); }
.btn-ghost-ivory:hover { background: var(--ivory-on-dark); color: var(--ink); border-color: var(--ivory-on-dark); }

/* ── hero ───────────────────────────────────────────────────── */
.hero { position: relative; padding: 84px 0 0; overflow: hidden; }
.hero .wrap { position: relative; }
.hero .mast-tagline {
  font-family: var(--mono);
  font-size: 0.72rem; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--bronze);
}
.hero h1 { margin-top: 26px; max-width: 15em; }
.hero .hanzi-inline {
  font-family: var(--serif-cjk); color: var(--jade);
  font-size: 0.62em; margin-left: 0.35em; vertical-align: 0.12em;
}
.hero .mast-sub {
  margin-top: 26px;
  font-size: 1.08rem; color: var(--muted);
  max-width: 56ch; line-height: 1.8;
}
.hero .hero-ctas { margin-top: 40px; display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
.hero .hero-note { margin-top: 18px; font-size: 0.78rem; letter-spacing: 0.04em; color: var(--stone); }
.seal-stamp {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--vermilion); color: var(--paper);
  font-family: var(--serif-cjk);
  border-radius: 2px;
  user-select: none;
}
.hero .seal-stamp { width: 40px; height: 40px; font-size: 1rem; line-height: 1.05; letter-spacing: 0; }
/* Brand Standard 01 — the C Iron-Wire seal replaces the text stamp */
.seal-stamp-img { display: inline-block; width: 32px; height: 32px; align-self: center; }
.hero .seal-stamp-img { width: 40px; height: 40px; }
.site-footer .seal-stamp-img { width: 36px; height: 36px; }
/* footer brandline lockup: symbol above, MINGJIAN wordmark below */
.site-footer .brandline { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.site-footer .brandline .word { letter-spacing: 0.32em; }

/* ── the app frame: product screenshots as first-class objects ─ */
.app-frame {
  margin-top: 64px;
  background: var(--lacquer-2);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 10px;
  box-shadow: var(--shadow-app);
  overflow: hidden;
}
.app-frame .chrome {
  display: flex; align-items: center; gap: 14px;
  padding: 12px 18px;
  background: var(--lacquer);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}
.app-frame .dots { display: flex; gap: 7px; }
.app-frame .dots i {
  width: 10px; height: 10px; border-radius: 50%;
  background: rgba(237, 234, 226, 0.16);
}
.app-frame .dots i:first-child { background: rgba(158, 53, 36, 0.7); }
.app-frame .dots i:nth-child(2) { background: rgba(138, 115, 80, 0.55); }
.app-frame .dots i:nth-child(3) { background: rgba(47, 96, 81, 0.75); }
.app-frame .url {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.04em;
  color: rgba(237, 234, 226, 0.55);
  background: rgba(255, 255, 255, 0.05);
  border-radius: 5px;
  padding: 5px 14px;
  user-select: none;
}
.app-frame .pane { background: var(--paper-deep); }
.app-frame img { width: 100%; height: auto; display: block; }
.app-frame.tall img { max-height: 78vh; object-fit: cover; object-position: top; }

.shot-caption {
  margin-top: 16px;
  font-size: 0.78rem; color: var(--stone);
  display: flex; gap: 10px; align-items: baseline;
}
.shot-caption .tick { color: var(--jade); font-family: var(--mono); }
.shot-caption.on-dark { color: rgba(237, 234, 226, 0.6); }
.lacquer .shot-caption .tick { color: var(--bronze); }

/* ── walkthrough steps ──────────────────────────────────────── */
.steps { margin-top: 64px; display: grid; gap: 72px; }
@media (max-width: 960px) { .steps { gap: 56px; } }
.step { display: grid; grid-template-columns: 300px 1fr; gap: 48px; align-items: start; }
@media (max-width: 960px) { .step { grid-template-columns: 1fr; gap: 24px; } }
/* A step carrying only text takes the full measure instead of the 300px media column */
.step:has(> .meta:only-child) { grid-template-columns: 1fr; }
.step:has(> .meta:only-child) .meta { position: static; max-width: 620px; }
.step .meta { position: sticky; top: 96px; }
@media (max-width: 960px) { .step .meta { position: static; } }
.step .no {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.3em;
  color: var(--jade);
}
.step h3 { font-size: clamp(1.45rem, 2.4vw, 1.9rem); margin-top: 14px; }
.step .who { margin-top: 16px; color: var(--muted); font-size: 0.96rem; line-height: 1.75; }
.step .who strong { color: var(--ink); font-weight: 600; }
.step .app-frame { margin-top: 0; }
.step .app-frame img { max-height: 560px; object-fit: cover; object-position: top; width: 100%; }

/* question line (the "ask") */
.ask-line {
  font-family: var(--serif); font-style: italic;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  line-height: 1.3; color: var(--ink);
  max-width: 20em;
}

/* ── the contrast split (Section 3) ─────────────────────────── */
.contrast { display: grid; grid-template-columns: 1fr 1fr; gap: 0; margin-top: 60px; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: var(--card); }
@media (max-width: 900px) { .contrast { grid-template-columns: 1fr; } }
.contrast .side { padding: 44px 42px 50px; }
.contrast .side + .side { border-left: 1px solid var(--line); }
@media (max-width: 900px) { .contrast .side + .side { border-left: 0; border-top: 1px solid var(--line); } }
.contrast .side.old { background: var(--paper-deep); }
.contrast .k {
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.26em;
  text-transform: uppercase; color: var(--stone);
}
.contrast h3 { margin-top: 16px; font-size: 1.45rem; }
.contrast ul { list-style: none; margin-top: 26px; }
.contrast li { padding: 12px 0 12px 26px; position: relative; border-top: 1px solid var(--line); font-size: 0.94rem; color: var(--ink-soft); }
.contrast li strong { color: var(--ink); font-weight: 600; }
.contrast .old li::before { content: "—"; position: absolute; left: 0; color: var(--stone); }
.contrast .new li::before { content: "✓"; position: absolute; left: 0; color: var(--jade); }
.contrast .new { background: var(--card); }
.contrast .new .k { color: var(--jade); }

.consequence { margin-top: 40px; font-size: 1.02rem; color: var(--ink-soft); max-width: 66ch; }
.consequence strong { color: var(--ink); }

/* ── three modes (Ask / Direct / Entrust) ───────────────────── */
.modes { border-top: 1px solid var(--line); padding-top: 40px; }
.modes-title { font-size: 0.8rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--stone); margin-bottom: 6px; }
.mode-row { display: grid; grid-template-columns: 130px 1fr; gap: 24px; padding: 20px 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.mode-row:last-child { border-bottom: 0; }
.mode-row .mode-k { font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.26em; text-transform: uppercase; color: var(--jade); }
.mode-row p { color: var(--ink-soft); font-size: 1rem; max-width: 60ch; }
@media (max-width: 640px) { .mode-row { grid-template-columns: 1fr; gap: 6px; } }

/* ── connected systems strip ────────────────────────────────── */
.systems { margin-top: 56px; border: 1px solid var(--line); border-radius: 10px; background: var(--card); padding: 40px 42px 44px; }
.systems-k { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.24em; text-transform: uppercase; color: var(--jade); }
.systems-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.systems-row .sys {
  font-family: var(--sans); font-weight: 600; font-size: 0.92rem;
  color: var(--ink-soft);
  border: 1px solid var(--line); border-radius: 6px;
  padding: 10px 20px; background: var(--paper);
  white-space: nowrap;
}
.systems-row .sys-people { border-color: var(--jade); color: var(--jade); background: rgba(47, 96, 81, 0.06); }
.systems-note { margin-top: 26px; font-size: 0.94rem; color: var(--muted); max-width: 66ch; }
@media (max-width: 640px) { .systems { padding: 30px 22px 34px; } }

/* ── control facts (Section 4, lacquer) ─────────────────────── */
.controls { margin-top: 56px; display: grid; grid-template-columns: 1fr 1fr; gap: 2px; background: var(--line-dark); border: 1px solid var(--line-dark); }
@media (max-width: 860px) { .controls { grid-template-columns: 1fr; } }
.controls .fact { background: var(--lacquer); padding: 30px 32px 34px; }
.controls .fact .fn { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.28em; color: var(--bronze); }
.controls .fact h3 { margin-top: 12px; font-size: 1.2rem; color: var(--ivory-on-dark); letter-spacing: 0.01em; }
.controls .fact p { margin-top: 10px; font-size: 0.9rem; line-height: 1.7; color: rgba(237, 234, 226, 0.62); }

/* ── monumental list (kept for subpages) ────────────────────── */
.loop { border-top: 1px solid var(--line); }
.loop-row {
  display: grid;
  grid-template-columns: 72px 250px 1fr;
  gap: 30px;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}
.loop-row .n {
  font-family: var(--mono);
  font-size: 0.78rem; color: var(--stone); letter-spacing: 0.2em;
}
.loop-row .name {
  font-family: var(--sans); font-weight: 600;
  font-size: 1.02rem; letter-spacing: 0.1em; text-transform: uppercase;
}
.loop-row .desc { color: var(--muted); font-size: 0.96rem; line-height: 1.75; max-width: 56ch; }
.loop-row.em .n, .loop-row.em .name { color: var(--jade); }
@media (max-width: 860px) {
  .loop-row { grid-template-columns: 56px 1fr; gap: 8px 18px; padding: 24px 0; }
  .loop-row .desc { grid-column: 2; }
}

/* ── editorial intent rows (kept for subpages) ──────────────── */
.intents .intent {
  font-family: var(--serif); font-style: italic;
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  line-height: 1.3;
  color: var(--ink);
  max-width: 24em;
}
.intents .intent .who {
  display: block; font-family: var(--mono); font-style: normal;
  font-size: 0.7rem; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--stone); margin-top: 12px;
}
.intents .intent-row { padding: 38px 0; border-top: 1px solid var(--line); }
.intents .intent-row:first-child { border-top: 0; padding-top: 10px; }
.intents .shift { margin-left: clamp(0px, 12vw, 180px); }

/* ── three carriers (kept for subpages) ─────────────────────── */
.carriers { display: grid; grid-template-columns: 1fr 1fr 1fr; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.carriers .carrier { padding: 42px 34px 48px; border-left: 1px solid var(--line); }
.carriers .carrier:first-child { border-left: 0; padding-left: 0; }
.carriers .carrier .glyph { font-family: var(--serif-cjk); font-size: 1.5rem; color: var(--jade); margin-bottom: 20px; }
.carriers .carrier h3 { font-size: 1.15rem; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 14px; font-family: var(--sans); font-weight: 600; }
.carriers .carrier p { color: var(--muted); font-size: 0.94rem; }
@media (max-width: 860px) {
  .carriers { grid-template-columns: 1fr; }
  .carriers .carrier { border-left: 0; border-top: 1px solid var(--line); padding: 34px 0; }
  .carriers .carrier:first-child { border-top: 0; }
}

/* ── dark lacquer bands ─────────────────────────────────────── */
.lacquer { background: var(--lacquer); color: var(--ivory-on-dark); }
.lacquer .eyebrow { color: var(--bronze); }
.lacquer .lead { color: rgba(237, 234, 226, 0.72); }
.lacquer h2 { color: var(--ivory-on-dark); }
.lacquer a { color: var(--ivory-on-dark); }

.ink-line {
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3.4vw, 2.6rem);
  line-height: 1.25;
}

.laws { margin-top: 56px; border-top: 1px solid var(--line-dark); }
.laws .law {
  display: grid; grid-template-columns: 1fr 40px 1fr;
  gap: 24px; align-items: baseline;
  padding: 18px 0; border-bottom: 1px solid var(--line-dark);
}
.laws .cond { color: var(--ivory-on-dark); font-size: 0.94rem; }
.laws .arrow { color: var(--bronze); text-align: center; }
.laws .act { color: rgba(237, 234, 226, 0.66); font-size: 0.94rem; }
@media (max-width: 720px) { .laws .law { grid-template-columns: 1fr 24px 1fr; gap: 12px; } }

/* ── governed action stepper (kept for product page) ────────── */
.stepper { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 56px; border-top: 1px solid var(--line-dark); }
.stepper .step { padding: 28px 26px 6px 0; position: relative; display: block; }
.stepper .step::before {
  content: ""; position: absolute; top: -1px; left: 0;
  width: 44px; height: 3px; background: var(--bronze);
}
.stepper .step .k { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.26em; color: var(--stone); text-transform: uppercase; }
.stepper .step .v { font-family: var(--sans); font-weight: 600; font-size: 1.15rem; margin-top: 10px; line-height: 1.3; }
.stepper .step .d { color: rgba(237, 234, 226, 0.62); font-size: 0.88rem; margin-top: 12px; line-height: 1.7; }
.stepper .step.em::before { background: var(--jade); }
.stepper .step.em .k { color: var(--jade); }
@media (max-width: 860px) { .stepper { grid-template-columns: 1fr 1fr; gap: 0 26px; } }
@media (max-width: 560px) { .stepper { grid-template-columns: 1fr; } }

/* ── pilot numbers ──────────────────────────────────────────── */
.pilot { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; border-top: 1px solid var(--line); padding-top: 42px; margin-top: 52px; }
.pilot .cell .v { font-family: var(--serif); font-size: clamp(2rem, 3.4vw, 2.9rem); line-height: 1; font-variant-numeric: tabular-nums; }
.pilot .cell .k { margin-top: 14px; font-size: 0.72rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--stone); line-height: 1.9; }
@media (max-width: 960px) { .pilot { grid-template-columns: 1fr 1fr; gap: 40px 30px; } }
@media (max-width: 520px) { .pilot { grid-template-columns: 1fr; } }

/* ── tables (records) ───────────────────────────────────────── */
.record { width: 100%; border-collapse: collapse; margin-top: 40px; font-size: 0.95rem; }
.record th {
  text-align: left; font-family: var(--mono);
  font-size: 0.68rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--bronze); font-weight: 500;
  padding: 14px 18px 14px 0; border-bottom: 1px solid var(--ink);
}
.record td { padding: 16px 18px 16px 0; border-bottom: 1px solid var(--line); vertical-align: top; color: var(--ink-soft); }
.record td:first-child { color: var(--ink); }
.record .plain { color: var(--muted); }

/* ── checklist / dashes lists ───────────────────────────────── */
ul.rules { list-style: none; }
ul.rules li { padding: 13px 0 13px 30px; position: relative; border-bottom: 1px solid var(--line); }
ul.rules li::before { content: "—"; position: absolute; left: 0; color: var(--bronze); }
ul.checks { list-style: none; }
ul.checks li { padding: 13px 0 13px 30px; position: relative; border-bottom: 1px solid var(--line); }
ul.checks li::before { content: "✓"; position: absolute; left: 2px; color: var(--jade); }

/* ── callout / notice ───────────────────────────────────────── */
.callout {
  border-left: 2px solid var(--bronze);
  padding: 6px 0 6px 28px;
  margin-top: 44px;
  font-size: 0.95rem; color: var(--muted);
  max-width: 62ch;
}
.callout .title { color: var(--ink); font-weight: 500; }
.callout.on-dark { border-left-color: var(--bronze); color: rgba(237, 234, 226, 0.7); }
.callout.on-dark .title { color: var(--ivory-on-dark); }

/* ── page hero (subpages) ───────────────────────────────────── */
.page-hero { padding: 92px 0 76px; border-bottom: 1px solid var(--line); }
.page-hero h1 { max-width: 17em; }
.page-hero .lede { margin-top: 28px; font-size: 1.1rem; color: var(--muted); max-width: 58ch; line-height: 1.8; }

/* ── footer ─────────────────────────────────────────────────── */
.site-footer { background: var(--lacquer); color: rgba(237, 234, 226, 0.72); margin-top: 110px; }
.site-footer .top { display: grid; grid-template-columns: 2.2fr 1fr 1fr 1fr; gap: 40px; padding: 76px 0 62px; }
@media (max-width: 860px) { .site-footer .top { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .site-footer .top { grid-template-columns: 1fr; } }
.site-footer .brandline { display: flex; align-items: baseline; gap: 14px; }
.site-footer .word { font-family: var(--sans); font-weight: 600; font-size: 0.95rem; letter-spacing: 0.26em; color: var(--ivory-on-dark); }
.site-footer .hanzi { font-family: var(--serif-cjk); font-size: 1.05rem; color: var(--ivory-on-dark); }
.site-footer .seal-stamp { width: 36px; height: 36px; font-size: 0.9rem; }
.site-footer .gloss { margin-top: 22px; font-size: 0.9rem; line-height: 1.9; }
.site-footer h4 {
  font-family: var(--mono); font-weight: 500;
  font-size: 0.66rem; letter-spacing: 0.26em; text-transform: uppercase;
  color: var(--bronze); margin-bottom: 20px;
}
.site-footer ul { list-style: none; }
.site-footer li { margin: 12px 0; }
.site-footer a { color: rgba(237, 234, 226, 0.72); text-decoration: none; }
.site-footer a:hover { color: var(--ivory-on-dark); text-decoration: underline; text-underline-offset: 4px; }
.site-footer .bottom {
  border-top: 1px solid var(--line-dark);
  padding: 26px 0 34px;
  display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between;
  font-size: 0.78rem; color: var(--stone);
}

/* ── a11y ───────────────────────────────────────────────────── */
.skip-link { position: absolute; left: -9999px; top: 0; background: var(--ink); color: var(--paper); padding: 12px 20px; z-index: 100; }
.skip-link:focus { left: 0; color: var(--paper); }
:focus-visible { outline: 2px solid var(--jade); outline-offset: 3px; }

/* ── utilities ──────────────────────────────────────────────── */
.mt-l { margin-top: 72px; } .mt-m { margin-top: 34px; }
.muted { color: var(--muted); }
.kv { display: grid; grid-template-columns: 220px 1fr; gap: 8px 40px; }
@media (max-width: 640px) { .kv { grid-template-columns: 1fr; } }
.center { text-align: center; }
.center p, .center .lead { margin-left: auto; margin-right: auto; }

/* ── hero operating visual (v2) ───────────────────────────────
   Abstract, product-led composition: scattered business fragments
   converging into one coherent operating view. Pure HTML/CSS —
   illustrative, never a product screenshot. */
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); gap: 56px; align-items: center; margin-top: 56px; }
@media (max-width: 1020px) { .hero-grid { grid-template-columns: 1fr; gap: 44px; } }

.hero-visual { position: relative; padding: 8px 0 4px; }
.hv-note { margin-top: 14px; font-size: 0.72rem; letter-spacing: 0.05em; color: var(--stone); max-width: 46ch; }
.hv-stage { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 26px; align-items: center; }
.hv-link { position: absolute; inset: 0; pointer-events: none; }
.hv-link line { stroke: var(--bronze); stroke-width: 1; stroke-dasharray: 2 5; opacity: 0.55; }

.hv-frag {
  border: 1px solid var(--line); border-radius: 6px; background: var(--paper);
  padding: 10px 12px; margin: 10px 0; position: relative; z-index: 1;
}
.hv-frag .fv-k { font-family: var(--mono); font-size: 0.58rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--stone); display: block; }
.hv-frag .fv-v { font-size: 0.8rem; color: var(--ink-soft); margin-top: 3px; display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.hv-frag.is-erp .fv-v { font-family: var(--mono); font-size: 0.72rem; }
.hv-frag.is-dim { opacity: 0.82; }

.hv-card {
  position: relative; z-index: 2;
  border: 1px solid var(--jade); border-radius: 8px; overflow: hidden;
  background: var(--ink); color: var(--ivory-on-dark);
  box-shadow: 0 24px 60px -32px rgba(20, 24, 22, 0.55);
}
.hv-card .hv-head {
  display: flex; justify-content: space-between; align-items: baseline; gap: 10px;
  padding: 12px 16px; border-bottom: 1px solid rgba(239, 234, 222, 0.14);
}
.hv-card .hv-title { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--jade); }
.hv-card .hv-date { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.12em; color: rgba(239, 234, 222, 0.55); }
.hv-row { display: flex; gap: 12px; align-items: baseline; padding: 12px 16px; border-bottom: 1px solid rgba(239, 234, 222, 0.08); }
.hv-row:last-child { border-bottom: none; }
.hv-dot { width: 7px; height: 7px; border-radius: 50%; flex: none; transform: translateY(-1px); }
.hv-dot.jade { background: var(--jade); }
.hv-dot.amber { background: var(--bronze); }
.hv-row .hv-t { font-size: 0.85rem; line-height: 1.45; }
.hv-row .hv-t strong { color: var(--ivory-on-dark); font-weight: 600; }
.hv-row .hv-s { display: block; font-size: 0.72rem; color: rgba(239, 234, 222, 0.6); margin-top: 3px; }
.hv-row .hv-go { margin-left: auto; font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.14em; color: var(--jade); flex: none; }

/* ── economics section ─────────────────────────────────────── */
.eco-ledger { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; margin-top: 44px; }
.eco-col { padding: 26px 30px 30px; }
.eco-col + .eco-col { border-left: 1px solid var(--line); background: var(--paper-deep); }
.eco-col h3 { font-size: 0.78rem; letter-spacing: 0.18em; text-transform: uppercase; margin: 0 0 16px; }
.eco-col.old h3 { color: var(--stone); }
.eco-col.new h3 { color: var(--jade); }
.eco-col ul { list-style: none; margin: 0; padding: 0; }
.eco-col li { padding: 10px 0 10px 26px; position: relative; border-bottom: 1px dotted var(--line); font-size: 0.92rem; line-height: 1.6; color: var(--ink-soft); }
.eco-col li:last-child { border-bottom: none; }
.eco-col.old li::before { content: "—"; position: absolute; left: 0; color: var(--stone); }
.eco-col.new li::before { content: "✓"; position: absolute; left: 0; color: var(--jade); }
.eco-note { margin-top: 14px; font-size: 0.72rem; letter-spacing: 0.04em; color: var(--stone); }
@media (max-width: 860px) { .eco-ledger { grid-template-columns: 1fr; } .eco-col + .eco-col { border-left: none; border-top: 1px solid var(--line); } }

/* ── request-access form ───────────────────────────────────── */
.req-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: 56px; margin-top: 52px; }
@media (max-width: 960px) { .req-grid { grid-template-columns: 1fr; gap: 40px; } }
.req-form { border: 1px solid var(--line); border-radius: 8px; background: var(--card); padding: 28px 30px 30px; }
.req-form .field { margin-bottom: 18px; }
.req-form label { display: block; font-family: var(--mono); font-size: 0.64rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--stone); margin-bottom: 8px; }
.req-form input, .req-form textarea, .req-form select {
  width: 100%; border: 1px solid var(--line); border-radius: 6px; background: var(--paper);
  padding: 12px 14px; font: inherit; font-size: 0.95rem; color: var(--ink);
}
.req-form textarea { resize: vertical; min-height: 84px; }
.req-form input:focus, .req-form textarea:focus, .req-form select:focus { outline: 2px solid var(--jade); outline-offset: 1px; border-color: var(--jade); }
.req-side .step { border-top: 1px solid var(--line); padding: 16px 0; }
.req-side .step:first-child { border-top: none; padding-top: 0; }
.req-side .step .n { font-family: var(--mono); font-size: 0.64rem; letter-spacing: 0.2em; color: var(--jade); }
.req-side .step .t { font-weight: 600; margin-top: 6px; }
.req-side .step .d { color: var(--muted); font-size: 0.9rem; line-height: 1.65; margin-top: 4px; }
/* request steps stack regardless of the global .step grid */
.req-side .step { display: block; }
/* hero-grid responsive hardening — nowrap fragments must never force
   the grid wider than the viewport on small screens */
.hero-grid > * { min-width: 0; }
.hv-frag { min-width: 0; }
@media (max-width: 700px) {
  .hv-stage { grid-template-columns: 1fr; gap: 16px; }
  .hv-link { display: none; }
  .hv-frag .fv-v { white-space: normal; }
  .hv-row .hv-go { display: none; }
}

/* ── possibilities editorial (dark) ─────────────────────────── */
.amb-q {
  font-family: var(--serif); font-size: clamp(1.55rem, 3vw, 2.35rem);
  line-height: 1.3; color: var(--ivory-on-dark); max-width: 24em; margin-top: 30px;
}
.ambitions { border-top: 1px solid rgba(237, 234, 222, 0.16); margin-top: 48px; }
.ambitions .amb {
  display: grid; grid-template-columns: 92px 1fr; gap: 20px;
  padding: 28px 0; border-bottom: 1px solid rgba(237, 234, 222, 0.12);
}
.ambitions .amb:last-child { border-bottom: none; }
.ambitions .amb .n {
  font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.22em;
  color: var(--jade); padding-top: 11px;
}
.ambitions .amb h3 {
  font-family: var(--serif); font-weight: 500; color: var(--ivory-on-dark);
  font-size: clamp(1.35rem, 2.4vw, 1.8rem); line-height: 1.2;
}
.ambitions .amb p {
  color: rgba(237, 234, 222, 0.68); font-size: 0.98rem; line-height: 1.7;
  margin-top: 7px; max-width: 58ch;
}
@media (max-width: 640px) { .ambitions .amb { grid-template-columns: 1fr; gap: 6px; padding: 22px 0; } }

/* ── v3: stakeholder band (four decision-makers) ────────────── */
.stakeholders { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-top: 48px; }
.stakeholders .stake { padding: 34px 28px 40px; border-left: 1px solid var(--line); }
.stakeholders .stake:first-child { border-left: 0; padding-left: 0; }
.stakeholders .stake .who {
  font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--jade);
}
.stakeholders .stake h3 { margin-top: 12px; font-size: 1.15rem; }
.stakeholders .stake p { margin-top: 10px; font-size: 0.9rem; color: var(--muted); line-height: 1.7; }
.stakeholders .stake .more { margin-top: 14px; font-size: 0.8rem; letter-spacing: 0.06em; }
@media (max-width: 960px) {
  .stakeholders { grid-template-columns: 1fr 1fr; }
  .stakeholders .stake { border-left: 0; border-top: 1px solid var(--line); padding: 28px 0; }
  .stakeholders .stake:first-child { border-top: 0; }
}
@media (max-width: 560px) { .stakeholders { grid-template-columns: 1fr; } }

/* ── v3: comparison table (why Mingjian) ────────────────────── */
.compare-note { margin-top: 18px; font-size: 0.82rem; color: var(--stone); max-width: 66ch; }

/* ── v3: form status, validation, honeypot ──────────────────── */
.req-form .hp-field {
  position: absolute; left: -9999px; top: -9999px;
  height: 1px; width: 1px; opacity: 0;
}
.form-status {
  display: none; margin-top: 14px;
  font-size: 0.9rem; line-height: 1.6;
  padding: 12px 16px; border-radius: 6px;
}
.form-status.show { display: block; }
.form-status.ok { background: rgba(47, 96, 81, 0.08); color: var(--jade-deep); border: 1px solid rgba(47, 96, 81, 0.35); }
.form-status.err { background: rgba(158, 53, 36, 0.06); color: var(--vermilion); border: 1px solid rgba(158, 53, 36, 0.3); }
.form-status.busy { background: var(--paper-deep); color: var(--muted); border: 1px solid var(--line); }
.req-form button[disabled] { opacity: 0.6; cursor: wait; }
.field .err-msg { display: none; margin-top: 6px; font-size: 0.78rem; color: var(--vermilion); }
.field.invalid .err-msg { display: block; }
.field.invalid input, .field.invalid textarea { border-color: var(--vermilion); }
.req-success h3 { font-size: 1.6rem; }
.req-success p { margin-top: 14px; color: var(--muted); }
.req-success .again { margin-top: 18px; font-size: 0.82rem; }