/* ==========================================================================
   YIRAN NEXUS · INDUSTRIAL MAGAZINE CORE
   Tokens, full-bleed hero, benefit ledger, day story and inline toggle panels.
   ========================================================================== */
:root {
  --bg: #0a0c0f; --bg-2: #0e1116; --bg-3: #12161d;
  --ink: #eae6dc; --ink-2: #b6b0a1; --ink-3: #8a8473;
  --bronze: #b08c5c; --bronze-dim: rgba(176, 140, 92, 0.38);
  --accent: #e8e0cc; --steel: #9fd8ff; --steel-dim: rgba(159, 216, 255, 0.28); --ok: #7ec699;
  --hairline: rgba(234, 230, 220, 0.14); --hairline-soft: rgba(234, 230, 220, 0.07);
  --serif: "Noto Serif SC", "Songti SC", "STSong", serif;
  --latin: "Bodoni Moda", "Instrument Serif", Georgia, serif;
  --sans: "Inter Tight", "Archivo", "PingFang SC", "Noto Sans SC", sans-serif;
  --mono: "JetBrains Mono", "SF Mono", ui-monospace, monospace;
  --head-h: 72px; --ease: cubic-bezier(0.16, 1, 0.3, 1); --pad-x: clamp(20px, 5vw, 72px);
}
*, *::before, *::after { box-sizing: border-box; }
html { background: var(--bg); scroll-behavior: smooth; scroll-padding-top: calc(var(--head-h) + 28px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans);
  font-weight: 300; font-size: 15px; line-height: 1.75; overflow-x: hidden;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
h1, h2, h3, h4, p, ul, ol, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
input, select, textarea { font: inherit; }
::selection { background: var(--ink); color: var(--bg); }
:focus-visible { outline: 1px solid var(--bronze); outline-offset: 3px; }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: rgba(234, 230, 220, 0.16); border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: var(--bronze-dim); }
.mono { font-family: var(--mono); font-variant-ligatures: none; }
.latin { font-family: var(--latin); }
.serif { font-family: var(--serif); }
.wrap { width: 100%; max-width: 1280px; margin-inline: auto; padding-inline: var(--pad-x); }
.eyebrow { font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--bronze); text-wrap: balance; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
/* ---------------------------------------------------------------- header */
.site-head { position: fixed; inset: 0 0 auto 0; height: var(--head-h); z-index: 60; border-bottom: 1px solid transparent; transition: background 0.35s ease, border-color 0.35s ease, backdrop-filter 0.35s ease; }
.site-head.is-scrolled { background: rgba(10, 12, 15, 0.78); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); border-bottom-color: var(--hairline-soft); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 22px; height: 100%; max-width: 100%; width: 100%; }
.brand { display: flex; align-items: baseline; gap: 12px; white-space: nowrap; }
.brand-cn { font-family: var(--serif); font-weight: 600; font-size: 17px; letter-spacing: 0.04em; }
.brand-latin { font-family: var(--latin); font-size: 11.5px; letter-spacing: 0.2em; color: var(--bronze); }
.brand-est { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; color: var(--ink-3); border-left: 1px solid var(--hairline); padding-left: 12px; }
.head-nav { display: flex; align-items: center; gap: clamp(10px, 1.8vw, 26px); }
.head-nav a { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; color: var(--ink-3); transition: color 0.25s ease; white-space: nowrap; }
.head-nav a .num { color: var(--bronze); margin-right: 5px; }
.head-nav a:hover { color: var(--ink); }
.head-actions { display: flex; align-items: center; gap: 12px; }
.head-link { font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; color: var(--ink-2); border: 1px solid var(--hairline); padding: 9px 12px; white-space: nowrap; transition: border-color 0.3s ease, color 0.3s ease; }
.head-link:hover { border-color: var(--bronze-dim); color: var(--bronze); }
.clock { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; color: var(--ink-3); font-variant-numeric: tabular-nums; }
.head-menu-toggle { display: none; align-items: center; justify-content: center; gap: 7px; min-height: 38px; padding: 8px 12px; background: rgba(10, 12, 15, 0.72); border: 1px solid var(--hairline); color: var(--ink-2); font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; cursor: pointer; border-radius: 2px; transition: border-color 0.25s ease, color 0.25s ease, background 0.25s ease; }
.head-menu-toggle:hover { border-color: var(--bronze-dim); color: var(--bronze); background: rgba(176, 140, 92, 0.08); }
.head-menu-toggle:focus-visible { outline: 1px solid var(--bronze); outline-offset: 2px; }
.head-menu-toggle[aria-expanded="true"] { border-color: var(--bronze); color: var(--bronze); background: rgba(176, 140, 92, 0.14); }
.head-menu-toggle .hamburger { width: 14px; height: 11px; display: flex; flex-direction: column; justify-content: space-between; flex: none; }
.head-menu-toggle .hamburger span { display: block; width: 100%; height: 1.5px; background: currentColor; transition: transform 0.25s var(--ease), opacity 0.25s var(--ease); }
.head-menu-toggle[aria-expanded="true"] .hamburger span:nth-child(1) { transform: translateY(4.75px) rotate(45deg); }
.head-menu-toggle[aria-expanded="true"] .hamburger span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.head-menu-toggle[aria-expanded="true"] .hamburger span:nth-child(3) { transform: translateY(-4.75px) rotate(-45deg); }
.head-nav-extra { display: none; }
/* --------------------------------------------------------------- buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; padding: 12px 18px; border: 1px solid var(--hairline); color: var(--ink-2); transition: color 0.3s ease, background 0.3s ease, border-color 0.3s ease; }
.btn:hover { color: var(--bg); background: var(--accent); border-color: var(--accent); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--bg); }
.btn-primary:hover { background: var(--bronze); border-color: var(--bronze); color: var(--bg); }
.btn-line { border-color: var(--bronze-dim); color: var(--bronze); }
.btn-line:hover { background: var(--bronze); border-color: var(--bronze); color: var(--bg); }
.text-link { display: inline-flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; color: var(--bronze); border-bottom: 1px solid var(--bronze-dim); padding-bottom: 4px; }
.text-link:hover { color: var(--accent); border-bottom-color: var(--accent); }
/* ------------------------------------------------------ full-bleed hero */
.hero-fullbleed { position: relative; min-height: 100vh; min-height: 100svh; display: flex; flex-direction: column; justify-content: flex-end; overflow: hidden; isolation: isolate; border-bottom: 1px solid var(--hairline-soft); padding-top: calc(var(--head-h) + 30px); background: var(--bg); }
.hero-bg-img { position: absolute; inset: 0; z-index: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 42%; opacity: 0.82; filter: saturate(0.94) contrast(1.05) brightness(0.92); }
.hero-field { position: absolute; inset: 0; z-index: 1; width: 100%; height: 100%; }
.hero-vignette { position: absolute; inset: 0; z-index: 2; pointer-events: none; background: linear-gradient(90deg, rgba(10, 12, 15, 0.94) 0%, rgba(10, 12, 15, 0.72) 34%, rgba(10, 12, 15, 0.18) 66%, rgba(10, 12, 15, 0.55) 100%), linear-gradient(to top, var(--bg) 2%, rgba(10, 12, 15, 0.6) 24%, transparent 58%), linear-gradient(to bottom, rgba(10, 12, 15, 0.72), transparent 26%); }
.hero-fullbleed > .wrap { position: relative; z-index: 3; display: flex; flex-direction: column; justify-content: flex-end; flex: 1; }
.hero-inner { padding-block: clamp(56px, 10vh, 128px) clamp(30px, 5vh, 54px); max-width: 900px; }
.hero-title { font-family: var(--serif); font-weight: 500; font-size: clamp(2.8rem, 6.2vw, 5.4rem); line-height: 1.08; letter-spacing: -0.025em; margin: 20px 0 24px; text-wrap: balance; text-shadow: 0 2px 38px rgba(10, 12, 15, 0.55); }
.hero-title .line { display: block; }
.hero-title em { font-style: normal; color: var(--bronze); }
.hero-lead { max-width: 52ch; color: var(--ink-2); font-size: clamp(13px, 1.35vw, 15px); line-height: 1.95; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.hero-ctas .btn { backdrop-filter: blur(4px); }
.hero-foot { border-top: 1px solid var(--hairline); }
.key-metrics-strip { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); background: rgba(10, 12, 15, 0.5); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); }
.key-metric { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; gap: clamp(12px, 2vw, 22px); padding: clamp(16px, 2.2vw, 24px) clamp(14px, 2.4vw, 30px); border-right: 1px solid var(--hairline-soft); }
.key-metric:last-child { border-right: 0; }
.key-metric .num { font-family: var(--latin); font-size: clamp(1.9rem, 3.4vw, 3rem); line-height: 1; color: var(--bronze); white-space: nowrap; }
.key-metric .k { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; color: var(--ink-3); text-transform: uppercase; }
.key-metric .v { font-size: 12px; line-height: 1.6; color: var(--ink); margin-top: 5px; }
.key-metric .v b { color: var(--ok); font-weight: 500; }
.key-metric .v .steel { color: var(--steel); }
.hero-side { min-width: 0; }
/* ------------------------------------------------------- benefit ledger */
.benefit-ledger { border-top: 1px solid var(--hairline); margin-top: 24px; }
.benefit-head, .benefit-row { display: grid; grid-template-columns: minmax(96px, 0.62fr) minmax(0, 1fr) 40px minmax(0, 1.18fr); gap: clamp(10px, 1.8vw, 22px); align-items: center; }
.benefit-head { padding: 10px 4px; font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); border-bottom: 1px solid var(--hairline-soft); }
.benefit-head span:nth-child(2) { color: var(--ink-3); }
.benefit-head span:nth-child(4) { color: var(--bronze); }
.benefit-row { padding: 16px 4px; border-bottom: 1px solid var(--hairline); }
.benefit-scenario { font-family: var(--serif); font-size: 14.5px; font-weight: 500; color: var(--ink); line-height: 1.45; }
.benefit-before { color: var(--ink-3); font-size: 12.5px; line-height: 1.7; }
.benefit-arrow { font-family: var(--mono); font-size: 12px; color: var(--bronze-dim); text-align: center; }
.benefit-after { color: var(--ink); font-size: 12.5px; line-height: 1.7; }
.benefit-after b, .benefit-after strong { color: var(--bronze); font-weight: 500; }
.benefit-after .ok { color: var(--ok); }
.benefit-note { font-family: var(--mono); font-size: 12px; letter-spacing: 0.03em; color: var(--ink-3); margin-top: 10px; }
/* ----------------------------------------------------------- day story */
.day-story-box { border: 1px solid var(--hairline); background: linear-gradient(145deg, rgba(176, 140, 92, 0.055), rgba(14, 17, 22, 0.72) 48%, rgba(10, 12, 15, 0.9)); margin-top: 26px; }
.day-story-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding: 15px clamp(15px, 2.4vw, 24px); border-bottom: 1px solid var(--hairline-soft); }
.day-story-title { font-family: var(--serif); font-size: clamp(1.2rem, 2.1vw, 1.6rem); font-weight: 500; }
.day-story-title em { font-style: normal; color: var(--bronze); }
.day-tabs { display: flex; gap: 1px; background: var(--hairline); border: 1px solid var(--hairline); }
.day-tab { background: var(--bg-2); padding: 9px 13px; font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; color: var(--ink-3); text-align: left; transition: background 0.25s ease, color 0.25s ease; }
.day-tab:hover { color: var(--ink); }
.day-tab[aria-selected="true"] { background: var(--accent); color: var(--bg); }
.day-panel[hidden] { display: none; }
.day-intro { padding: 13px clamp(15px, 2.4vw, 24px); font-family: var(--mono); font-size: 12px; line-height: 1.75; letter-spacing: 0.02em; color: var(--ink-3); border-bottom: 1px solid var(--hairline-soft); }
.day-intro b { color: var(--bronze); font-weight: 400; }
.day-timeline { position: relative; }
.day-step { display: grid; grid-template-columns: 92px minmax(0, 1fr) 30px minmax(0, 1.12fr); gap: clamp(10px, 1.6vw, 20px); align-items: center; padding: 14px clamp(15px, 2.4vw, 24px); border-bottom: 1px solid var(--hairline-soft); }
.day-step:last-child { border-bottom: 0; }
.day-time { font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; color: var(--bronze); }
.day-before { color: var(--ink-3); font-size: 12px; line-height: 1.7; }
.day-arrow { font-family: var(--mono); font-size: 11px; color: var(--bronze-dim); text-align: center; }
.day-after { color: var(--ink); font-size: 12px; line-height: 1.7; }
.day-after b { color: var(--steel); font-weight: 500; }
.day-after strong { color: var(--bronze); font-weight: 500; }
.day-story-foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; padding: 13px clamp(15px, 2.4vw, 24px); border-top: 1px solid var(--hairline-soft); }
.day-story-foot .mono { font-size: 11px; letter-spacing: 0.04em; color: var(--ink-3); }
/* ----------------------------------------------------------- sections etc */
.section { position: relative; padding-block: clamp(64px, 8.5vw, 122px); border-top: 1px solid var(--hairline-soft); }
.section:first-of-type { border-top: 0; }
.sec-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 3fr); gap: clamp(24px, 5vw, 72px); }
.sec-idx { position: sticky; top: calc(var(--head-h) + 40px); align-self: start; }
.sec-num { font-family: var(--latin); font-size: clamp(34px, 4.5vw, 56px); line-height: 1; color: var(--bronze); }
.sec-name { font-family: var(--serif); font-size: 17px; font-weight: 500; margin-top: 12px; letter-spacing: 0.02em; }
.sec-en { font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-3); margin-top: 7px; }
.sec-idx .rule { display: block; width: 40px; height: 1px; background: var(--bronze-dim); margin-top: 20px; }
.sec-title { font-family: var(--serif); font-weight: 500; font-size: clamp(1.7rem, 3.2vw, 2.7rem); line-height: 1.3; letter-spacing: -0.015em; text-wrap: balance; }
.sec-lead { color: var(--ink-2); font-size: 13.5px; line-height: 1.85; max-width: 58ch; margin-top: 14px; }
.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 28px; margin-bottom: 34px; flex-wrap: wrap; }
.sec-head .sec-lead { margin-top: 0; max-width: 40ch; }
.section-foot { margin-top: 28px; display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
/* --------------------------------------------------------- ledger rows */
.ledger { border-top: 1px solid var(--hairline); }
.ledger-row {
  display: grid; grid-template-columns: 54px minmax(0, 1fr) auto; align-items: center; gap: 18px; width: 100%;
  padding: 20px 12px 20px 2px; border-bottom: 1px solid var(--hairline); text-align: left; color: inherit;
  transition: background 0.35s ease;
}
.ledger-row:hover, .ledger-row:focus-visible { background: linear-gradient(90deg, rgba(232, 224, 204, 0.035), transparent 72%); }
.ledger-row .row-no { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; color: var(--bronze); display: flex; align-items: center; gap: 10px; }
.ledger-row .row-main { min-width: 0; }
.ledger-row .row-title { font-family: var(--serif); font-size: 17px; font-weight: 500; line-height: 1.45; transition: transform 0.35s var(--ease), color 0.3s ease; display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.ledger-row:hover .row-title { transform: translateX(5px); }
.ledger-row .row-en { font-family: var(--latin); font-style: italic; font-size: 11.5px; color: var(--ink-3); letter-spacing: 0.04em; }
.ledger-row .row-meta { font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; color: var(--ink-3); margin-top: 4px; }
.ledger-row .row-go { font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; color: var(--ink-3); white-space: nowrap; display: flex; align-items: center; gap: 8px; transition: color 0.3s ease; }
.ledger-row:hover .row-go, .ledger-row.is-expanded .row-go { color: var(--bronze); }
.ledger-row.is-expanded { background: linear-gradient(90deg, rgba(176, 140, 92, 0.07), transparent 74%); }
/* --------------------------------------------------------------- plaques */
.plaques { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 1px; background: var(--hairline-soft); border: 1px solid var(--hairline-soft); }
.plaque { background: var(--bg); padding: 15px 14px 17px; min-height: 76px; display: flex; flex-direction: column; justify-content: space-between; gap: 9px; }
.plaque .tag { font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; color: var(--ink-3); }
.plaque .name { font-family: var(--serif); font-size: 13px; font-weight: 500; line-height: 1.4; }
.plaque.is-institute .tag { color: var(--bronze); }
/* ----------------------------------------------------------- edit layout */
.mag-split { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(24px, 4vw, 56px); align-items: center; }
.mag-quote { font-family: var(--serif); font-weight: 500; font-size: clamp(1.8rem, 3.4vw, 3rem); line-height: 1.32; letter-spacing: -0.02em; }
.mag-quote em { font-style: normal; color: var(--bronze); }
/* ------------------------------------------------------------- chronicle */
.chronicle { border-top: 1px solid var(--hairline); }
.chronicle-row {
  display: grid; grid-template-columns: 128px minmax(0, 1fr) auto; align-items: center; gap: 22px; padding: 20px 12px 20px 2px;
  border-bottom: 1px solid var(--hairline); width: 100%; text-align: left; transition: background 0.35s ease;
}
.chronicle-row:hover, .chronicle-row:focus-visible { background: linear-gradient(90deg, rgba(232, 224, 204, 0.035), transparent 72%); }
.chronicle-year { font-family: var(--latin); font-size: clamp(20px, 2.4vw, 27px); color: var(--ink-2); letter-spacing: 0.02em; white-space: nowrap; }
.chronicle-row.is-current .chronicle-year { color: var(--bronze); }
.chronicle-row.is-future .chronicle-year { color: var(--ink-3); }
.phase-line { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; color: var(--ink-3); text-transform: uppercase; margin-bottom: 5px; }
.phase-line .current-tag { border: 1px solid var(--bronze-dim); color: var(--bronze); padding: 2px 5px; }
.chronicle-title { font-family: var(--serif); font-size: 15.5px; font-weight: 500; line-height: 1.55; text-wrap: pretty; }
.chronicle-go { font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; color: var(--ink-3); white-space: nowrap; }
.chronicle-row:hover .chronicle-go { color: var(--bronze); }
/* --------------------------------------------------------------- columns */
.invest-cols { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--hairline); border-block: 1px solid var(--hairline); }
.invest-col { background: var(--bg); padding: clamp(20px, 2.6vw, 30px) clamp(17px, 2.2vw, 26px); display: flex; flex-direction: column; gap: 12px; }
.invest-col .k { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; color: var(--ink-3); text-transform: uppercase; }
.invest-col h3 { font-family: var(--serif); font-size: clamp(1.15rem, 1.9vw, 1.45rem); font-weight: 500; line-height: 1.45; }
.invest-col p { font-size: 12.5px; line-height: 1.8; color: var(--ink-2); }
.invest-points { display: flex; flex-wrap: wrap; gap: 6px; }
.invest-points span { font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; border: 1px solid var(--hairline); padding: 4px 8px; color: var(--ink-3); }
.invest-col .text-link { margin-top: auto; align-self: flex-start; font-size: 11px; }
/* ---------------------------------------------------------------- cases */
.case-ledger { border-top: 1px solid var(--hairline); }
.case-row { display: grid; grid-template-columns: 58px minmax(0, 1fr) minmax(210px, 0.62fr); gap: clamp(16px, 3vw, 36px); align-items: center; padding: 24px 2px; border-bottom: 1px solid var(--hairline); }
.case-no { font-family: var(--latin); font-size: 20px; color: var(--bronze); align-self: start; padding-top: 3px; }
.case-meta { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; color: var(--ink-3); }
.case-title { font-family: var(--serif); font-weight: 500; font-size: clamp(1.12rem, 2vw, 1.5rem); line-height: 1.5; margin: 7px 0 10px; }
.case-clients { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; color: var(--ink-3); border: 1px solid var(--hairline-soft); padding: 4px 8px; }
.case-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; text-align: right; }
.case-stat { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.case-stat .v { font-family: var(--latin); font-size: clamp(1.35rem, 2.5vw, 2rem); line-height: 1.1; color: var(--bronze); white-space: nowrap; }
.case-stat .k { font-family: var(--mono); font-size: 11px; letter-spacing: 0.05em; color: var(--ink-3); margin-top: 0; line-height: 1.55; }
.case-actions { grid-column: 2 / -1; display: flex; justify-content: flex-end; }
.case-actions .text-link { font-size: 11px; }
/* --------------------------------------------------------------- contact */
.contact-call { font-family: var(--serif); font-weight: 500; font-size: clamp(2rem, 4.6vw, 3.8rem); line-height: 1.18; letter-spacing: -0.02em; max-width: 18ch; }
.contact-call em { font-style: normal; color: var(--bronze); }
.contact-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--hairline); border-block: 1px solid var(--hairline); margin-top: clamp(28px, 4vw, 48px); }
.contact-cell { background: var(--bg); padding: 22px 20px; min-width: 0; }
.contact-cell .k { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; color: var(--ink-3); text-transform: uppercase; text-wrap: pretty; }
.contact-cell .v { font-size: 14px; line-height: 1.65; margin-top: 9px; color: var(--ink); overflow-wrap: anywhere; }
.contact-cell .v small { display: block; font-family: var(--mono); font-size: 11px; color: var(--ink-3); margin-top: 4px; letter-spacing: 0.05em; }
.contact-cell .copy { font-family: var(--mono); font-size: 11px; color: var(--ink-3); border: 1px solid var(--hairline); padding: 6px 9px; margin-top: 10px; letter-spacing: 0.06em; transition: color 0.3s ease, border-color 0.3s ease; }
.contact-cell .copy:hover { color: var(--bronze); border-color: var(--bronze-dim); }
.contact-cta { margin-top: clamp(26px, 3.5vw, 40px); display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.contact-cta .mono { font-size: 12px; color: var(--ink-3); letter-spacing: 0.03em; }
/* ---------------------------------------------------------------- footer */
.site-foot { border-top: 1px solid var(--hairline); padding-block: 26px; }
.site-foot .wrap { display: flex; justify-content: space-between; align-items: center; gap: 14px 26px; flex-wrap: wrap; max-width: 100%; width: 100%; }
.site-foot, .site-foot a { font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; color: var(--ink-3); }
.site-foot a:hover { color: var(--bronze); }
.site-foot .icp { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.site-foot .sep { color: var(--hairline); }
.site-foot .foot-tag { letter-spacing: 0.12em; text-transform: uppercase; }
/* -------------------------------------------------------------- terminal */
.terminal-card { display: flex; flex-direction: column; background: var(--bg-2); border: 1px solid var(--hairline); min-height: 460px; }
.terminal-bar { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 12px 16px; border-bottom: 1px solid var(--hairline); flex-wrap: wrap; }
.terminal-dots { display: flex; gap: 6px; }
.terminal-dots span { width: 7px; height: 7px; border: 1px solid var(--hairline); border-radius: 50%; background: var(--bg); }
.terminal-dots span:nth-child(1) { background: var(--bronze); border-color: var(--bronze); }
.terminal-dots span:nth-child(2) { border-color: var(--bronze-dim); }
.terminal-dots span:nth-child(3) { background: var(--ok); border-color: var(--ok); }
.terminal-path { font-family: var(--mono); font-size: 11px; letter-spacing: 0.05em; color: var(--ink-3); overflow-wrap: anywhere; }
.terminal-tabs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--hairline-soft); border-bottom: 1px solid var(--hairline); }
.terminal-tab { background: var(--bg-2); padding: 11px 12px; text-align: left; font-family: var(--mono); font-size: 11px; line-height: 1.6; letter-spacing: 0.03em; color: var(--ink-3); transition: color 0.25s ease, background 0.25s ease; }
.terminal-tab:hover { color: var(--ink-2); }
.terminal-tab[aria-selected="true"] { background: var(--bg); color: var(--ink); box-shadow: inset 0 -1px 0 var(--bronze); }
.terminal-output { flex: 1; max-height: 430px; overflow-y: auto; padding: 16px; font-family: var(--mono); font-size: 11.5px; line-height: 1.8; color: var(--ink-2); scroll-behavior: smooth; }
.terminal-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 16px; border-top: 1px solid var(--hairline); font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; color: var(--ink-3); flex-wrap: wrap; }
.term-line { display: block; margin-bottom: 2px; }
.term-line .term-flag { color: var(--bronze); margin-right: 8px; }
.term-user { border-left: 1px solid var(--bronze); padding: 2px 0 2px 12px; margin: 2px 0 12px; color: var(--ink); }
.term-divider { border-top: 1px solid var(--hairline-soft); margin: 12px 0; }
.term-ok { color: var(--ok); }
.term-steel { color: var(--steel); }
.term-warn { color: var(--bronze); }
.term-slip { border: 1px dashed var(--bronze-dim); background: rgba(176, 140, 92, 0.035); padding: 13px 14px; margin-top: 14px; }
.term-slip-title { font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--bronze); margin-bottom: 10px; }
.term-metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.term-metric .k { font-size: 11px; color: var(--ink-3); letter-spacing: 0.04em; }
.term-metric .v { font-size: 12px; color: var(--ink); margin-top: 3px; line-height: 1.55; }
.term-status { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; margin-top: 11px; padding-top: 9px; border-top: 1px solid var(--hairline-soft); font-size: 11px; }
.term-agent { padding: 9px 0; border-bottom: 1px solid var(--hairline-soft); }
.term-agent:last-child { border-bottom: 0; }
.term-agent .role { color: var(--ink); font-size: 11px; }
.term-agent .time { color: var(--ink-3); font-size: 11px; margin-left: 8px; }
.term-agent .task { color: var(--ink-2); margin: 4px 0; }
.term-agent .status { color: var(--bronze); font-size: 11px; }
/* -------------------------------------------------------------- roi strip */
.roi-strip {
  border-block: 1px solid var(--bronze-dim);
  background: linear-gradient(90deg, rgba(176, 140, 92, 0.07), transparent 68%);
  padding: clamp(22px, 3vw, 34px) clamp(18px, 3vw, 34px);
  display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
}
.roi-readout { display: flex; flex-wrap: wrap; align-items: baseline; gap: clamp(18px, 2.8vw, 44px); }
.roi-value { font-family: var(--latin); font-size: clamp(1.7rem, 3.2vw, 2.8rem); line-height: 1.1; color: var(--ink); }
.roi-value small { display: block; font-family: var(--mono); font-size: 11px; line-height: 1.5; letter-spacing: 0.1em; color: var(--ink-3); margin-bottom: 11px; text-transform: uppercase; }
.roi-value.is-bronze { color: var(--bronze); }
/* ------------------------------------------------------ inline toggle */
.btn-toggle {
  display: inline-flex; align-items: center; gap: 12px; max-width: 100%; padding: 11px 15px;
  border: 1px solid var(--bronze-dim); color: var(--bronze); font-family: var(--mono);
  font-size: 11px; line-height: 1.55; letter-spacing: 0.06em; text-align: left;
  transition: background 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}
.btn-toggle:hover { background: rgba(176, 140, 92, 0.08); border-color: var(--bronze); }
.btn-toggle.is-expanded { background: var(--bronze); border-color: var(--bronze); color: var(--bg); }
.btn-toggle .toggle-icon {
  width: 20px; height: 20px; flex: none; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--bronze-dim); font-size: 13px; line-height: 1; transition: transform 0.35s var(--ease), border-color 0.3s ease;
}
.btn-toggle:hover .toggle-icon { transform: rotate(90deg); }
.btn-toggle.is-expanded .toggle-icon { border-color: rgba(10, 12, 15, 0.4); transform: rotate(180deg); }
.btn-toggle .toggle-label { min-width: 0; }
.toggle-panel {
  position: relative; margin-top: 18px; border: 1px solid var(--bronze-dim);
  background: linear-gradient(180deg, rgba(176, 140, 92, 0.06), rgba(14, 17, 22, 0.98) 14%);
  box-shadow: 0 30px 60px -40px rgba(0, 0, 0, 0.8);
  scroll-margin-top: calc(var(--head-h) + 26px);
}
.toggle-panel[hidden] { display: none; }
.toggle-panel.is-open { animation: toggleReveal 0.55s var(--ease) both; }
.toggle-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; padding: 14px clamp(16px, 2.5vw, 28px); border-bottom: 1px solid var(--hairline); background: rgba(10, 12, 15, 0.42); }
.toggle-code { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; color: var(--bronze); text-transform: uppercase; }
.toggle-cat { font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; color: var(--ink-3); margin-top: 4px; }
.toggle-close { font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; color: var(--ink-3); border: 1px solid var(--hairline); padding: 7px 10px; white-space: nowrap; transition: color 0.3s ease, background 0.3s ease, border-color 0.3s ease; }
.toggle-close:hover { background: var(--accent); border-color: var(--accent); color: var(--bg); }
.toggle-title { font-family: var(--serif); font-weight: 500; font-size: clamp(1.45rem, 2.7vw, 2rem); line-height: 1.34; letter-spacing: -0.01em; padding: 22px clamp(16px, 2.5vw, 28px) 0; }
.toggle-subtitle { font-family: var(--latin); font-style: italic; font-size: 12px; letter-spacing: 0.05em; color: var(--bronze); padding: 7px clamp(16px, 2.5vw, 28px) 0; }
.toggle-inner > .dossier-content { padding: 0 clamp(16px, 2.5vw, 28px); margin-top: 22px; }
.toggle-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 14px clamp(16px, 2.5vw, 28px); border-top: 1px solid var(--hairline); margin-top: 26px; background: rgba(10, 12, 15, 0.42); }
.toggle-back { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; color: var(--bronze); border: 1px solid var(--bronze-dim); padding: 8px 11px; transition: background 0.3s ease, color 0.3s ease; }
.toggle-back:hover { background: var(--bronze); color: var(--bg); }
.toggle-foot-right { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.toggle-jump { font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; color: var(--ink-2); border-bottom: 1px solid var(--bronze-dim); padding-bottom: 2px; }
.toggle-jump:hover { color: var(--bronze); }
.toggle-note { font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; color: var(--ink-3); }
@keyframes toggleReveal { from { opacity: 0; transform: translateY(-12px); } to { opacity: 1; transform: none; } }
/* --------------------------------------------------------- dossier body */
.dossier-content { color: var(--ink-2); font-size: 13px; line-height: 1.85; }
.dossier-content h3 { font-family: var(--serif); font-size: 18px; font-weight: 500; color: var(--ink); margin: 28px 0 10px; padding-top: 16px; border-top: 1px solid var(--hairline-soft); }
.dossier-content h3:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
.dossier-content h4 { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--bronze); margin: 20px 0 8px; }
.dossier-content p { margin-bottom: 13px; max-width: 88ch; }
.dossier-content li { max-width: 88ch; }
.dossier-content strong { color: var(--ink); font-weight: 500; }
.dossier-content em { font-family: var(--latin); font-style: italic; color: var(--bronze); }
.dossier-content ul { margin: 10px 0 16px; }
.dossier-content li { position: relative; padding-left: 16px; margin-bottom: 7px; }
.dossier-content li::before { content: "+"; position: absolute; left: 0; top: 1px; font-family: var(--mono); font-size: 11px; color: var(--bronze); }
.dossier-content a { color: var(--bronze); border-bottom: 1px solid var(--bronze-dim); }
.dossier-lead { font-family: var(--serif); font-size: 14.5px; color: var(--ink); line-height: 1.95; }
.dossier-note { font-family: var(--mono); font-size: 12px; letter-spacing: 0.04em; color: var(--ink-3); margin-top: 6px; }
.dossier-badge { display: inline-block; font-family: var(--mono); font-size: 11px; letter-spacing: 0.05em; padding: 4px 8px; border: 1px solid var(--bronze-dim); color: var(--bronze); margin: 0 5px 5px 0; }
.dossier-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--hairline-soft); border: 1px solid var(--hairline-soft); margin: 14px 0 20px; }
.dossier-cell { background: var(--bg-2); padding: 13px 15px; }
.dossier-cell .k { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; color: var(--ink-3); text-transform: uppercase; }
.dossier-cell .v { font-size: 12px; color: var(--ink); margin-top: 5px; line-height: 1.65; }
.dossier-metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--hairline); border: 1px solid var(--hairline); margin: 16px 0 22px; }
.dossier-metric { background: var(--bg-2); padding: 14px; }
.dossier-metric .v { font-family: var(--latin); font-size: 21px; line-height: 1.15; color: var(--bronze); }
.dossier-metric .k { font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; color: var(--ink-3); margin-top: 4px; line-height: 1.5; }
.dossier-table { width: 100%; border-collapse: collapse; font-size: 11.5px; margin: 14px 0 20px; }
.dossier-table th, .dossier-table td { border-bottom: 1px solid var(--hairline-soft); padding: 9px 7px; text-align: left; vertical-align: top; }
.dossier-table th { font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-3); font-weight: 400; }
.dossier-table td { color: var(--ink-2); line-height: 1.7; }
.dossier-table td:first-child { color: var(--ink); }
.dossier-table .before { color: var(--ink-3); text-decoration: line-through; text-decoration-color: var(--bronze-dim); }
.dossier-table .after { color: var(--bronze); }
.dossier-callout { border-left: 1px solid var(--bronze); padding: 10px 0 10px 15px; margin: 14px 0 20px; color: var(--ink); background: linear-gradient(90deg, rgba(176, 140, 92, 0.055), transparent 80%); }
.dossier-callout .k { display: block; font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; color: var(--bronze); margin-bottom: 5px; text-transform: uppercase; }
.dossier-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.dossier-actions .btn { padding: 10px 14px; font-size: 11px; }
/* ---------------------------------------------------------------- forms */
.field { margin-bottom: 14px; min-width: 0; }
.field label { display: block; font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 7px; }
.field input, .field select, .field textarea { width: 100%; background: var(--bg); border: 1px solid var(--hairline); color: var(--ink); font-family: var(--sans); font-size: 12.5px; padding: 11px 12px; border-radius: 0; transition: border-color 0.3s ease; }
.field input::placeholder, .field textarea::placeholder { color: var(--ink-3); opacity: 0.72; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--bronze); outline: none; }
.field textarea { resize: vertical; min-height: 86px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-actions { margin-top: 18px; }
.form-note { font-family: var(--mono); font-size: 12px; line-height: 1.7; letter-spacing: 0.02em; color: var(--ink-3); margin-top: 10px; }
.form-success { border: 1px solid var(--bronze-dim); background: rgba(176, 140, 92, 0.05); padding: 18px; margin-top: 16px; }
.form-success[hidden] { display: none; }
.form-success h4 { font-family: var(--serif); font-size: 16px; color: var(--ink); margin-bottom: 7px; }
.form-success p { font-size: 12px; color: var(--ink-2); margin-bottom: 12px; }
/* ---------------------------------------------------------- roi simulator */
.roi-types { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--hairline); border: 1px solid var(--hairline); margin: 12px 0 22px; }
.roi-type { background: var(--bg-2); padding: 12px; text-align: left; font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; color: var(--ink-3); transition: background 0.25s ease, color 0.25s ease; }
.roi-type[aria-pressed="true"] { background: var(--accent); color: var(--bg); }
.roi-type:hover[aria-pressed="false"] { color: var(--ink); }
.roi-slider { margin-bottom: 18px; }
.roi-slider-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; font-size: 11.5px; color: var(--ink-2); margin-bottom: 4px; }
.roi-slider-head b { font-family: var(--mono); font-size: 12px; font-weight: 500; color: var(--bronze); white-space: nowrap; }
input[type="range"] { -webkit-appearance: none; appearance: none; width: 100%; height: 1px; background: var(--hairline); margin: 14px 0 8px; cursor: pointer; }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 12px; height: 12px; border-radius: 0; background: var(--accent); border: 1px solid var(--bg); box-shadow: 0 0 0 1px var(--bronze); cursor: pointer; }
input[type="range"]::-moz-range-thumb { width: 12px; height: 12px; border-radius: 0; background: var(--accent); border: 1px solid var(--bg); box-shadow: 0 0 0 1px var(--bronze); cursor: pointer; }
.roi-scale { display: flex; justify-content: space-between; gap: 8px; font-family: var(--mono); font-size: 11px; letter-spacing: 0.03em; color: var(--ink-3); }
.roi-dashboard { border: 1px solid var(--bronze-dim); background: linear-gradient(155deg, rgba(176, 140, 92, 0.07), transparent 62%); padding: clamp(16px, 3vw, 22px); margin-top: 22px; }
.roi-dashboard .k { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; color: var(--ink-3); text-transform: uppercase; }
.roi-total { font-family: var(--latin); font-size: clamp(2rem, 5vw, 2.7rem); line-height: 1.1; color: var(--ink); margin: 5px 0 16px; }
.roi-dashboard-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; border-top: 1px solid var(--hairline-soft); padding-top: 14px; }
.roi-dashboard-grid .v { font-family: var(--latin); font-size: 20px; color: var(--bronze); }
.roi-dashboard-grid .k { margin-top: 2px; }
.roi-badge { display: inline-block; font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; border: 1px solid var(--bronze-dim); color: var(--bronze); padding: 5px 9px; margin-bottom: 14px; }
.roi-recommendation { margin-top: 16px; border-top: 1px solid var(--hairline-soft); padding-top: 13px; font-size: 11.5px; line-height: 1.8; color: var(--ink-2); }
.roi-recommendation .k { display: block; margin-bottom: 5px; color: var(--bronze); }
.roi-footnote { font-family: var(--mono); font-size: 12px; letter-spacing: 0.01em; color: var(--ink-3); margin-top: 10px; line-height: 1.7; }
/* ---------------------------------------------------------------- bands */
.band { position: relative; height: clamp(210px, 34vw, 430px); overflow: hidden; border-block: 1px solid var(--hairline-soft); background: var(--bg-2); }
.band img { width: 100%; height: 100%; object-fit: cover; filter: contrast(1.06) brightness(0.84); transition: transform 0.8s var(--ease), filter 0.8s var(--ease); }
.band:hover img { transform: scale(1.02); filter: contrast(1.08) brightness(0.96); }
.band::before, .band::after { content: ""; position: absolute; left: 0; right: 0; height: 34%; pointer-events: none; } .band::before { top: 0; background: linear-gradient(to bottom, var(--bg), transparent); } .band::after { bottom: 0; background: linear-gradient(to top, var(--bg), transparent); }
.band figcaption { position: absolute; left: var(--pad-x); right: var(--pad-x); bottom: 16px; z-index: 1; font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em; color: var(--ink-2); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.band .fig-index { color: var(--bronze); }
.band .fig-right { color: var(--ink-3); }
/* ------------------------------------------------------------- ambient */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.reveal.active { opacity: 1; transform: none; }
/* ----------------------------------------------------------- responsive */
@media (max-width: 1180px) {
  .head-actions .head-link.is-secondary { display: none; }
  .head-menu-toggle { display: inline-flex; }
  .head-nav { display: none; position: absolute; top: var(--head-h); left: 0; right: 0; width: 100%; flex-direction: column; align-items: stretch; gap: 0; background: rgba(10, 12, 15, 0.98); -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px); border-bottom: 1px solid var(--bronze-dim); box-shadow: 0 18px 40px rgba(0, 0, 0, 0.85); padding: 10px var(--pad-x) 20px; max-height: calc(100vh - var(--head-h)); max-height: calc(100svh - var(--head-h)); overflow-y: auto; z-index: 59; }
  .site-head.nav-open .head-nav, .head-nav.is-open { display: flex; animation: headNavDrop 0.22s var(--ease); }
  .head-nav a { display: flex; align-items: center; padding: 13px 4px; font-size: 13px; letter-spacing: 0.08em; color: var(--ink-2); border-bottom: 1px solid var(--hairline-soft); white-space: normal; }
  .head-nav a:hover, .head-nav a:focus-visible { color: var(--ink); padding-left: 6px; }
  .head-nav a .num { font-size: 11px; color: var(--bronze); min-width: 36px; margin-right: 8px; }
  .head-nav .head-nav-extra { display: flex; align-items: center; justify-content: space-between; margin-top: 14px; padding: 12px 14px; background: rgba(176, 140, 92, 0.08); border: 1px solid var(--bronze-dim); color: var(--bronze); font-size: 12px; }
  .head-nav .head-nav-extra:hover { background: rgba(176, 140, 92, 0.18); color: var(--ink); border-color: var(--bronze); padding-left: 14px; }
  .head-nav .head-nav-extra .ext-tag { font-size: 10px; border: 1px solid var(--bronze-dim); padding: 2px 6px; background: rgba(10, 12, 15, 0.6); }
}
@keyframes headNavDrop { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: translateY(0); } }
@media (max-width: 900px) {
  :root { --head-h: 64px; }
  .hero-inner { padding-block: 72px 34px; }
  .key-metric { grid-template-columns: 1fr; gap: 6px; padding: 14px 16px; }
  .key-metric .num { font-size: 1.8rem; }
  .sec-grid { grid-template-columns: 1fr; gap: 20px; }
  .sec-idx { position: static; display: flex; align-items: baseline; flex-wrap: wrap; gap: 12px 16px; }
  .sec-num { font-size: 34px; }
  .sec-name, .sec-en { margin-top: 0; }
  .sec-idx .rule { display: none; }
  .mag-split { grid-template-columns: 1fr; }
  .invest-cols { grid-template-columns: 1fr; }
  .case-row { grid-template-columns: 46px minmax(0, 1fr); align-items: start; }
  .case-no { padding-top: 0; }
  .case-stats { grid-column: 2; text-align: left; max-width: 320px; }
  .case-actions { grid-column: 2; justify-content: flex-start; }
  .contact-grid { grid-template-columns: 1fr; }
  .brand-est { display: none; }
  .head-actions .clock { display: none; }
  .dossier-table { font-size: 11px; }
  .day-step { grid-template-columns: 82px minmax(0, 1fr) 24px minmax(0, 1fr); }
}
@media (max-width: 700px) {
  .head-actions .btn { padding: 10px 12px; font-size: 11px; }
  .brand-latin { display: none; }
  .hero-fullbleed { min-height: 92svh; }
  .hero-bg-img { object-position: 62% center; }
  .hero-vignette { background: linear-gradient(90deg, rgba(10, 12, 15, 0.94), rgba(10, 12, 15, 0.55)), linear-gradient(to top, var(--bg) 2%, transparent 62%); }
  .hero-ctas { gap: 8px; }
  .hero-ctas .btn { width: 100%; }
  .key-metrics-strip { grid-template-columns: 1fr; }
  .key-metric { border-right: 0; border-bottom: 1px solid var(--hairline-soft); }
  .key-metric:last-child { border-bottom: 0; }
  .benefit-head { display: none; }
  .benefit-row { grid-template-columns: 1fr; gap: 6px; padding-block: 15px; }
  .benefit-scenario { color: var(--bronze); font-size: 13.5px; }
  .benefit-before, .benefit-after { padding-left: 0; }
  .benefit-before::before { content: "BEFORE · "; font-family: var(--mono); font-size: 11px; color: var(--ink-3); }
  .benefit-after::before { content: "AFTER · "; font-family: var(--mono); font-size: 11px; color: var(--bronze); }
  .benefit-arrow { display: none; }
  .day-story-head { align-items: flex-start; }
  .day-tabs { width: 100%; }
  .day-tab { flex: 1; font-size: 11px; }
  .day-step { grid-template-columns: 1fr; gap: 5px; padding-block: 13px; }
  .day-arrow { display: none; }
  .day-before::before { content: "BEFORE · "; font-family: var(--mono); font-size: 11px; color: var(--ink-3); }
  .day-after::before { content: "AFTER · "; font-family: var(--mono); font-size: 11px; color: var(--bronze); }
  .ledger-row { grid-template-columns: 34px minmax(0, 1fr); gap: 12px; }
  .ledger-row .row-go { display: none; }
  .chronicle-row { grid-template-columns: 1fr; gap: 6px; padding-block: 18px; }
  .chronicle-go { display: none; }
  .plaques { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .spec-metrics { grid-template-columns: 1fr; gap: 10px; }
  .case-row { grid-template-columns: 1fr; }
  .case-no { display: none; }
  .case-stats, .case-actions { grid-column: 1; }
  .case-stats { text-align: left; }
  .dossier-grid, .dossier-metrics, .field-row, .roi-types, .terminal-tabs, .term-metrics, .roi-dashboard-grid { grid-template-columns: 1fr; }
  .toggle-head { flex-direction: column; gap: 10px; }
  .toggle-close { align-self: flex-start; }
  .toggle-foot { flex-direction: column; align-items: flex-start; }
  .toggle-foot-right { gap: 8px; }
  .band figcaption .fig-right { display: none; }
  .dossier-content { font-size: 12.5px; }
  .roi-value { font-size: 1.7rem; }
  .roi-readout { display: grid; grid-template-columns: 1fr; gap: 18px; }
}
@media (max-width: 420px) {
  .brand-cn { font-size: 15px; }
  .head-actions { gap: 8px; }
  .head-actions .btn { padding: 8px 10px; font-size: 11px; letter-spacing: 0.06em; }
  .head-menu-toggle { padding: 6px 9px; min-height: 34px; font-size: 10.5px; }
  .head-menu-toggle .hamburger { width: 12px; height: 10px; }
}
/* ------------------------------------------------------- reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  .toggle-panel.is-open, .site-head.nav-open .head-nav, .head-nav.is-open { animation: none !important; }
}